CN108289017B - Signal receiving and transmitting method, and control channel receiving and transmitting method and device - Google Patents
Signal receiving and transmitting method, and control channel receiving and transmitting method and device Download PDFInfo
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Abstract
The invention provides a signal receiving and sending method, a control channel receiving and sending method and a device, wherein the signal receiving method comprises the following steps: receiving a signal sent by a first communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is used for determining the transmission parameter of the signal, and the second resource unit comprises at least one of the following: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a signal receiving and transmitting method, a control channel receiving and transmitting method, and an apparatus.
Background
As one of core technologies of 5G communication, high frequency communication provides effective support for future 5G large data communication. The biggest characteristic of high-frequency communication is that the high-frequency communication has relatively large spatial fading characteristics, so that long-distance transmission based on high frequency becomes a problem. Meanwhile, because the wavelength of the high frequency is shorter, more antenna elements can be gathered in the same area compared with the low frequency, so that a high-gain beam can be formed, the beam gain is used for resisting the spatial fading in the high-frequency communication, the coverage range of the high-frequency communication is effectively increased, and the application of the high-frequency communication to the cellular communication becomes possible.
A demodulation Reference Signal of a Physical Downlink Control Channel (PDCCH) in the existing LTE is a Cell-Specific Reference Signal (CRS), a coverage area of the CRS is a Cell area, and the CRS is transmitted in each subframe. CRSs are transmitted in the system bandwidth, CRSs of the same port consider the same transmission beam in the system bandwidth, and accurate channel estimation values of a control channel, including large-scale information of the channel, can be accurately obtained only through the CRSs. .
The control channel based on beam transmission, in which the control channel demodulation reference signal is not the cell coverage but the beam range, and the transmission beam may vary every time unit, needs to be further considered in terms of the control channel based on beam transmission and the transmission method of the control channel reference signal based on beam transmission. On the other hand, in the discussion of NR, CRS tends to be cancelled, so as to save transmission power of a base station, a Demodulation reference Signal (DMRS) is used as a Demodulation reference Signal of a control channel (the Demodulation reference Signal is not transmitted in the full system bandwidth, nor is it transmitted in every time unit), beams adopted by the Demodulation reference Signal in different resources may be different, and how to obtain an accurate channel estimation value of the control channel needs to be further studied when the Demodulation reference Signal of the control channel is transmitted based on the DMRS.
The first problem to be studied is how to determine Precoding Resource block Groups (PRGs) of a control channel and its demodulation reference signal, which is a problem to be further solved. Although the EPDCCH also uses a DMRS as its demodulation reference signal, since a Physical Resource Block (PRB) occupied by the EPDCCH is allocated by a higher layer and may be discontinuous in a frequency domain, a PRG of a control channel is at most one PRB in the frequency domain, and with the enhancement of the control channel in NR, how to determine the PRG of the control channel and its demodulation reference signal is a problem to be further studied.
The second problem to be studied is how to obtain the large-scale channel characteristic parameter information of the control channel demodulation reference signal, and how to obtain the large-scale channel characteristic parameter information of the control channel demodulation reference signal without the CRS.
How to acquire the third control channel demodulation reference signal port is a problem to be studied further, especially when the control channel can be transmitted in a MU-MIMO manner in the case of transmitting the control channel by using a beam.
Disclosure of Invention
The embodiment of the invention provides a signal receiving and sending method, a control channel receiving and sending method and a device, which are used for at least solving the problem of how to improve the accuracy of channel estimation in the process of sending signals by adopting a control channel sending mechanism and/or a beam mechanism which takes DMRS as demodulation reference signals in the related technology.
According to an embodiment of the present invention, there is provided a signal receiving method including: receiving a signal sent by a first communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is configured to determine a transmission parameter of the signal, and the second resource unit includes at least one of: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, the first resource unit includes at least one of the following units: the precoding resource block group of the signal, the minimum transmission unit of the signal, the resource unit of the first reference signal corresponding to the signal, and the minimum resource unit of the signal transmission pattern are determined.
Optionally, after receiving the signal sent by the first communication node, the method further includes: and acquiring a channel estimation value of the signal according to the relevant transmission parameter of the signal.
Optionally, the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the set of ports of the first reference signal is a subset of a set of demodulation reference signal ports of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the first resource unit of the signal is determined according to at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the K times that the first resource unit is the second resource unit of the signal includes at least one of the following features: the frequency domain resource of the first resource unit is K times the frequency domain resource of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time-frequency resources included by the first resource unit is K times of the number of the time-frequency resources included by the second resource unit.
Optionally, when the signal is a demodulation reference signal and/or a measurement reference signal, determining the minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, and the transmission pattern of the signal includes at least one of: time domain resources occupied by the signals, frequency domain resources occupied by the signals, and code domain resources occupied by the signals.
Optionally, the receiving the signal sent by the first communication node comprises: receiving the relevant information of the first resource unit notified by the first communication node, and obtaining the relevant information of the second resource unit according to the relevant information of the first resource unit; and receiving the related information of the second resource unit notified by the first communication node, and obtaining the related information of the first resource unit according to the related information of the second resource unit.
Optionally, the time domain/frequency domain/code domain resource occupied by the second resource unit is determined according to at least one of the following information: time domain parameters, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information of a broadcast channel.
Optionally, the frequency domain/code domain resource occupied by the first resource unit is determined according to time domain information.
Optionally, determining the K value according to at least one of the following manners, further comprising: receiving the K value notified by the first communication node; determining the K value according to the system bandwidth; determining the K value according to bandwidth information corresponding to the second communication node; determining the K value according to the resource mapping mode of the signal; determining the K value according to the number of the sending resources fed back by the second communication node; and determining the K value according to the number of the time-frequency resources which can be used for controlling channel transmission and are included in the second resource unit.
Optionally, the receiving the signal sent by the first communication node comprises: receiving a type of the second resource unit notified by the first communication node, the type of the second resource unit comprising: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
According to another embodiment of the present invention, there is provided a signal transmission method including: sending a signal to a second communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is configured to determine a related transmission parameter of the signal, and the second resource unit includes at least one of: the system comprises a control channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of the second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource of the second communication node, a resource occupied by the signal and a physical resource block PRB.
Optionally, the first resource unit includes at least one of: the precoding resource block group of the signal, the minimum sending unit of the signal, the resource unit of the first reference signal corresponding to the signal, and the minimum resource unit of the signal sending pattern are determined.
Optionally, the sending a signal to the second communication node comprises: and sending the signal to the second communication node according to the relevant transmission parameter of the signal.
Optionally, the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the set of ports of the first reference signal is a subset of a set of demodulation reference signal ports of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the first resource unit of the signal is determined according to at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the K times that the first resource unit is the second resource unit of the signal includes at least one of the following features: the frequency domain resource of the first resource unit is K times of the frequency domain resource of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time-frequency resources included by the first resource unit is K times of the number of the time-frequency resources included by the second resource unit.
Optionally, when the signal is a demodulation reference signal and/or a measurement reference signal, determining the minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, and the transmission pattern of the signal includes at least one of: time domain resources occupied by the signal, frequency domain resources occupied by the signal, and code domain resources occupied by the signal.
Optionally, the sending the signal for channel estimation to the second communication node comprises: notifying the second communication node of the information related to the first resource unit, the information related to the second resource unit being notified by the information related to the first resource unit; notifying the second communication node of the information related to the first resource unit, by the information related to the second resource unit, of the information related to the first resource unit;
optionally, before sending the signal for channel estimation to the second communication node, determining the time domain/frequency domain/code domain resource occupied by the second resource unit according to at least one of the following information: time domain information, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located.
Optionally, the frequency domain/code domain resource occupied by the first resource unit is determined according to time domain information.
Optionally, determining the K value according to at least one of the following manners further includes: determining the K value according to a system bandwidth according to a mode of informing the K value to the second communication node; determining the K value according to the bandwidth information corresponding to the second communication node; determining the K value according to the resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node, and determining the K value according to the number of the time-frequency resources which are included in the second resource unit and can be used for controlling channel transmission.
Optionally, the sending the signal to the second communication node comprises: a type of the second resource unit notified to the second communication node, the type of the second resource unit comprising: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
According to still another embodiment of the present invention, there is provided a control channel receiving method including: determining a set of demodulation reference signal ports of a control channel, wherein the set of demodulation reference signal ports of the control channel is a subset of a second set of reference signal ports; receiving the control channel on the determined control channel demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and is obtained according to the signaling information sent by the first communication node, the demodulation reference signal set of the broadcast channel, and the measurement reference signal port set.
Optionally, the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: sending resource information corresponding to the second communication node, a time parameter corresponding to the control channel, the number M1 of port sets of the demodulation reference signal, a control channel region type where the control channel is located, a time parameter corresponding to a control channel region where the control channel is located, a frequency domain resource index corresponding to the control channel, a control channel unit index of the control channel, a control resource group index of the control channel, and receiving signaling information sent by the first communication node, wherein the signaling information includes related information of the demodulation reference signal of the control channel.
Optionally, the transmission resource satisfies at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the plurality of transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, the demodulation reference signal port set of the control channel satisfies one of the following characteristics: the set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, the set of demodulation reference signal ports of the control channel is obtained by one of the following methods: detecting a reference signal in the second reference signal port set, and selecting one or more reference signal ports in the second reference signal port set to form a demodulation reference signal port set of the control channel according to the receiving performance of the reference signal; detecting a control channel on each reference signal port of the second reference signal port set, wherein the reference signal set which is successfully detected forms a demodulation reference signal port set of the control channel; and the demodulation reference signal port set of the control channel is obtained according to the signaling information sent by the first communication node.
Optionally, determining the demodulation reference signal port set of the control channel comprises: it is assumed that one or more other control channels may occupy a port in a third set of reference signal ports, which is the difference between the second set of reference signal ports and the set of control channel demodulation reference signal ports.
Optionally, when the control channel regions where the control channels are located are different, the determination methods of the demodulation reference signals of the control channels are different, and/or the detection methods of the control channels are different, and/or the minimum sending units of the demodulation reference signals of the control channels are different.
Optionally, determining the set of demodulation reference signal ports of the control channel comprises at least one of: in a first control channel region, the demodulation reference signals for the control channel are the second set of reference signal ports, and in a second control channel region, the demodulation reference signals for the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; a demodulation reference signal for the control channel in the second control channel region is time-varying; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with frequency domain resources; the demodulation reference signal of the control channel in the second control channel region is changed along with frequency domain resources; in the first control channel region, the demodulation reference signal port of the control channel can be determined only according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel; and in the first control channel region, assuming that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, assuming that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, demodulation reference signal ports of the control channels in different control channel regions satisfy at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control regions are the same in number; the set of demodulation reference signal ports of the control channels in one control channel region is a subset of the set of demodulation reference signal ports of the control channels in another control region.
Optionally, the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; multiplexing different control channel regions in a time division, and/or frequency division, and/or code division mode; the union set of different control channel regions is the same with the system bandwidth in the frequency domain; the union of the different control channel regions is the same bandwidth in the frequency domain as the second communication node.
Optionally, the control channel region satisfies at least one of the following characteristics: acquiring a control channel region type contained in a time unit according to time parameter information of the time unit; the configuration information sent by the first communication node indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, the demodulation reference signal of the control channel satisfies at least one of the following characteristics: in a first control channel region, a first communication node is assumed to transmit a demodulation reference signal of the control channel only in a time unit of transmitting the control channel; in the second control channel region, it is assumed that a first communication node transmits a demodulation reference signal of the control channel in an agreed time unit and a time unit for transmitting the control channel, and it is assumed that the first communication node may not transmit the control channel of the second communication node in the agreed time unit.
Optionally, the minimum transmission unit of the demodulation reference signal of the control channel further satisfies at least one of the following characteristics: the minimum sending unit is one or more control channel resource groups; the minimum sending unit is one or more control channel units; the minimum sending unit is a resource occupied by one or more candidate control channels; the minimum sending unit is a resource occupied by a searching space with the same polymerization degree; the minimum sending unit is a resource occupied by all search controls of all polymerization degrees of the second communication node; the minimum transmission unit is the control channel region.
Optionally, the same reference signal ports of different control areas are quasi co-located, or in a first predetermined time unit, the same reference signal ports of different control areas are quasi co-located, and in a time unit other than the second predetermined time unit, the same reference signal ports of different control areas do not have a quasi co-location relationship.
According to still another embodiment of the present invention, there is provided a method for transmitting a control channel, including: determining a set of demodulation reference signal ports for a control channel, wherein the demodulation reference signal ports for the control channel are a subset of a second set of reference signal ports; transmitting the control channel to the second communication node on the determined demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and the second reference signal port set is obtained according to signaling information sent to a second communication node, a demodulation reference signal set of a broadcast channel, and a measurement reference signal port set.
Optionally, the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: the sending resource information corresponding to the second communication node, the time parameter corresponding to the control channel, the port set number M1 of the demodulation reference signal, the control channel region type where the control channel is located, the time parameter corresponding to the control channel region where the control channel is located, the frequency domain resource index corresponding to the control channel, the control channel unit index of the control channel, and the control resource group index of the control channel.
Optionally, the transmission resource satisfies at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the transmission resources and the demodulation reference signal port set; the plurality of transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, the demodulation reference signal port set of the control channel satisfies one of the following characteristics: the set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, determining the demodulation reference signal port set of the control channel includes: and sending signaling information to the second communication node, wherein the signaling information comprises demodulation reference signal port information of the control channel.
Optionally, the control channel regions where the control channels are located are different, the determination methods of the demodulation reference signals of the control channels are different, and/or the transmission methods of the control channels are different, and/or the minimum transmission units of the demodulation reference signals of the control channels are different.
Optionally, when the control channel regions in which the control channels are located are different, determining the demodulation reference signal port set of the control channels includes at least one of the following methods: in a first control channel region, the demodulation reference signals for the control channel are the second set of reference signal ports, and in a second control channel region, the demodulation reference signals for the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; a demodulation reference signal for the control channel in the second control channel region is time-varying; in the first control channel region, a demodulation reference signal port of the control channel may be determined according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, a demodulation reference signal port of the control channel may not be determined according to the number of ports included in the demodulation reference signal of the control channel; and in the first control channel region, assuming that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, assuming that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, demodulation reference signal ports of the control channels in different control channel regions satisfy at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control regions are the same in number; the set of demodulation reference signal ports of the control channels in one control channel region is a subset of the set of demodulation reference signal ports of the control channels in another control region.
Optionally, the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel region time domains overlap; multiplexing different control channel regions in a time division, and/or frequency division, and/or code division mode; the different control channel regions and the union fill the system bandwidth.
Optionally, the control channel region is determined by: and acquiring a control channel region contained in a time unit according to the time parameter information of the time unit.
Optionally, determining the demodulation reference signal port set of the control channel comprises: and sending configuration information to the second communication node, wherein the configuration information indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, determining the demodulation reference signal port set of the control channel comprises: transmitting, in a first control channel region, a demodulation reference signal of the control channel only in a time unit in which the control channel is transmitted; in a second control channel region, a demodulation reference signal of the control channel is transmitted in an agreed time unit, in which the control channel of the second communication node may not be transmitted, and a time unit in which the control channel is transmitted.
Optionally, the minimum transmission units of different control channel regions further satisfy at least one of the following characteristics: the minimum sending unit is one or more control channel resource groups; the minimum sending unit is one or more control channel units; the minimum sending unit is a resource occupied by one or more candidate control channels; the minimum sending unit is a resource occupied by a search space with the same polymerization degree; the minimum sending unit is a resource occupied by all search controls of all polymerization degrees of the second communication node; the minimum transmission unit is the control channel region.
Optionally, the same reference signal port of different control regions is quasi co-located; or in the first predetermined time unit, the same reference signal ports of different control areas are quasi co-located, and in time units other than the second predetermined time unit, the same reference signal ports of different control areas do not have quasi co-value relationship.
According to still another embodiment of the present invention, there is provided a signal receiving apparatus including: a first receiving module, configured to receive a signal sent by a first communication node, where a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is configured to determine a transmission parameter of the signal, and the second resource unit includes at least one of: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, the first resource unit includes at least one of the following units: the precoding resource block group of the signal, the minimum sending unit of the signal, the resource unit of the first reference signal corresponding to the signal, and the minimum resource unit of the signal sending pattern are determined.
Optionally, after receiving the signal sent by the first communication node, the method further includes: and acquiring a channel estimation value of the signal according to the relevant transmission parameter of the signal.
Optionally, the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the set of ports of the first reference signal is a subset of a set of demodulation reference signal ports of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the first resource unit of the signal is K times the second resource unit and includes at least one of the following features: the frequency domain resource of the first resource unit is K times the frequency domain resource of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time-frequency resources included by the first resource unit is K times of the number of the time-frequency resources included by the second resource unit.
Optionally, the first receiving module is further configured to receive the relevant information of the first resource unit, which is notified by the first communication node, and obtain the relevant information of the second resource unit according to the relevant information of the first resource unit; and receiving the related information of the second resource unit notified by the first communication node, and obtaining the related information of the first resource unit according to the related information of the second resource unit.
Optionally, the time domain/frequency domain/code domain resource occupied by the second resource unit is determined according to at least one of the following information: time domain parameters, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information of a broadcast channel.
Optionally, determining the K value according to at least one of the following manners further includes: receiving the K value notified by the first communication node; determining the K value according to the system bandwidth; determining the K value according to the bandwidth information corresponding to the second communication node; determining the K value according to the resource mapping mode of the signal; determining the K value according to the number of the sending resources fed back by the second communication node; and determining the K value according to the number of the time-frequency resources which can be used for controlling channel transmission and are included in the second resource unit.
According to still another embodiment of the present invention, there is provided a signal transmission apparatus including: a first sending module, configured to send a signal to a second communication node, where a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is configured to determine a transmission parameter of the signal, and the second resource unit includes at least one of: the system comprises a control channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of the second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource of the second communication node, a resource occupied by the signal and a physical resource block PRB.
Optionally, the first resource unit includes at least one of: the precoding resource block group of the signal, the minimum transmission unit of the signal, the resource unit of the first reference signal corresponding to the signal, and the minimum resource unit of the signal transmission pattern are determined.
Optionally, the sending a signal to the second communication node comprises: and sending the signal to the second communication node according to the relevant transmission parameter of the signal.
Optionally, the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the set of ports of the first reference signal is a subset of a set of demodulation reference signal ports of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the K times that the first resource unit is the second resource unit of the signal includes at least one of the following features: the frequency domain resource of the first resource unit is K times of the frequency domain resource of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
Optionally, the sending the signal for channel estimation to the second communication node includes: notifying the second communication node of the information related to the first resource unit, the information related to the second resource unit being notified by the information related to the first resource unit; notifying the second communication node of the information related to the first resource unit, by the information related to the second resource unit, of the information related to the first resource unit;
optionally, before sending the signal for channel estimation to the second communication node, determining the time domain/frequency domain/code domain resource occupied by the second resource unit according to at least one of the following information: time domain information, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located.
Optionally, determining the K value according to at least one of the following manners, further comprising: determining the K value according to a system bandwidth according to a mode of informing the K value to the second communication node; determining the K value according to bandwidth information corresponding to the second communication node; determining the K value according to the resource mapping mode of the signal; determining the K value according to the number of the sending resources fed back by the second communication node; and determining the K value according to the number of the time-frequency resources which can be used for controlling channel transmission and are included in the second resource unit.
According to still another embodiment of the present invention, there is provided a control channel receiving apparatus including: a first determining module to determine a set of demodulation reference signal ports of a control channel, wherein the set of demodulation reference signal ports of the control channel is a subset of a second set of reference signal ports; a second receiving module, configured to receive the control channel on the determined control channel demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and is obtained according to the signaling information sent by the first communication node, the demodulation reference signal set of the broadcast channel, and the measurement reference signal port set.
Optionally, the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: sending resource information corresponding to the second communication node, a time parameter corresponding to the control channel, the number M1 of port sets of the demodulation reference signal, a control channel region type where the control channel is located, a time parameter corresponding to a control channel region where the control channel is located, a frequency domain resource index corresponding to the control channel, a control channel unit index of the control channel, a control resource group index of the control channel, and receiving signaling information sent by the first communication node, wherein the signaling information includes related information of the demodulation reference signal of the control channel.
Optionally, the first determining module is further configured to assume that one or more other control channels may occupy a port in a third set of reference signal ports, where the third set of reference signal ports is a difference set between the second set of reference signal ports and the set of control channel demodulation reference signal ports.
Optionally, the first determining module is further configured to determine, in a first control channel region, demodulation reference signals of the control channel are the second set of reference signal ports, and in a second control channel region, demodulation reference signals of the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with frequency domain resources; the demodulation reference signal of the control channel in the second control channel region is changed along with frequency domain resources; in the first control channel region, the demodulation reference signal port of the control channel can be determined only according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel; and in the first control channel region, assuming that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, assuming that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, the demodulation reference signal of the control channel satisfies at least one of the following characteristics: in the first control channel region, it is assumed that the first communication node transmits a demodulation reference signal of the control channel only in a time unit in which the control channel is transmitted. In the second control channel region, it is assumed that a first communication node transmits a demodulation reference signal of the control channel in an agreed time unit and a time unit for transmitting the control channel, and it is assumed that the first communication node may not transmit the control channel of the second communication node in the agreed time unit.
Optionally, the same reference signal port of different control regions is quasi co-located; or in a first predetermined time unit, the same reference signal ports of different control areas are quasi co-located, and in time units other than the first predetermined time unit, the same reference signal ports of different control areas do not have quasi co-location relation.
According to still another embodiment of the present invention, there is provided a transmission apparatus of a control channel, including: a second determining module for determining a set of demodulation reference signal ports of a control channel, wherein the demodulation reference signal ports of the control channel are a subset of the second set of reference signal ports; a second sending module, configured to send the control channel to the second communication node on the determined demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and the second reference signal port set is obtained according to signaling information sent to the second communication node, a demodulation reference signal set of a broadcast channel, and a measurement reference signal port set.
Optionally, the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: sending resource information corresponding to the second communication node, a time parameter corresponding to the control channel, the port set number M1 of the demodulation reference signal, a control channel region type where the control channel is located, a time parameter corresponding to the control channel region where the control channel is located, a frequency domain resource index corresponding to the control channel, a control channel unit index of the control channel, a control resource group index of the control channel, and signaling information sent by the first communication node, wherein the signaling information includes relevant information of the control channel demodulation reference signal.
Optionally, the second determining module is further configured to send signaling information to the second communication node, where the signaling information includes demodulation reference signal port information of the control channel.
Optionally, in a case that the control channel regions where the control channels are located are different, the second determining module is further configured to determine, in the first control channel region, that the demodulation reference signal of the control channel is the second reference signal port set, and in the second control channel region, that the demodulation reference signal of the control channel is a proper subset of the second reference signal port set; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; in the first control channel region, a demodulation reference signal port of the control channel may be determined according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, a demodulation reference signal port of the control channel may not be determined according to the number of ports included in the demodulation reference signal of the control channel; and in the first control channel region, assuming that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, assuming that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, the second determining module is further configured to send, in the first control channel region, the demodulation reference signal of the control channel only in the time unit in which the control channel is sent; in a second control channel region, a demodulation reference signal of the control channel is transmitted in an agreed time unit, in which the control channel of the second communication node may not be transmitted, and a time unit in which the control channel is transmitted.
Optionally, the minimum transmission units of different control channel regions further satisfy at least one of the following characteristics: the minimum sending unit is one or more control channel resource groups; the minimum sending unit is one or more control channel units; the minimum sending unit is a resource occupied by one or more candidate control channels; the minimum sending unit is a resource occupied by a search space with the same polymerization degree; the minimum sending unit is a resource occupied by all search controls of all polymerization degrees of the second communication node; the minimum transmission unit is the control channel region.
Optionally, the same reference signal port of different control regions is quasi co-located; or in a first predetermined time unit, the same reference signal ports of different control areas are quasi-co-located, and in time units other than the first predetermined time unit, the same reference signal ports of different control areas do not have quasi-co-location relation.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of: receiving a signal sent by a first communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is configured to determine a transmission parameter of the signal, and the second resource unit includes at least one of: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the first resource unit includes at least one of: the precoding resource block group of the signal, the minimum transmission unit of the signal, the resource unit of the first reference signal corresponding to the signal, and the minimum resource unit of the signal transmission pattern are determined.
Optionally, the storage medium is further arranged to store program code for performing the steps of: after receiving the signal transmitted by the first communication node, the method further comprises: and acquiring a channel estimation value of the signal according to the relevant transmission parameter of the signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the set of ports of the first reference signal is a subset of a set of demodulation reference signal ports of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the first resource unit of the signal is determined based on at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the first resource unit of the signal is K times the second resource unit and includes at least one of the following features: the frequency domain resource of the first resource unit is K times the frequency domain resource of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time-frequency resources included by the first resource unit is K times of the number of the time-frequency resources included by the second resource unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of: when the signal is a demodulation reference signal and/or a measurement reference signal, determining a minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, and the transmission pattern of the signal includes at least one of: time domain resources occupied by the signals, frequency domain resources occupied by the signals, and code domain resources occupied by the signals.
Optionally, the storage medium is further arranged to store program code for performing the steps of: receiving a signal transmitted by the first communication node for use comprises: receiving the relevant information of the first resource unit notified by the first communication node, and obtaining the relevant information of the second resource unit according to the relevant information of the first resource unit; and receiving the related information of the second resource unit notified by the first communication node, and obtaining the related information of the first resource unit according to the related information of the second resource unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of: determining the time domain/frequency domain/code domain resources occupied by the second resource unit according to at least one of the following information: time domain parameters, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located.
Optionally, the storage medium is further arranged to store program code for performing the steps of: and determining the frequency domain/code domain resources occupied by the first resource unit according to the time domain information.
Optionally, the storage medium is further arranged to store program code for performing the steps of: determining the value of K according to at least one of the following ways, further comprising: receiving the K value notified by the first communication node; determining the K value according to the system bandwidth; determining the K value according to the bandwidth information corresponding to the second communication node; determining the K value according to the resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node.
Optionally, the storage medium is further arranged to store program code for performing the steps of: receiving a signal transmitted by the first communication node for use comprises: receiving a type of the second resource unit notified by the first communication node, the type of the second resource unit comprising: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of: sending a signal to a second communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is configured to determine a transmission parameter associated with the signal, and the second resource unit includes at least one of: the method comprises the steps of controlling a channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of the second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource of the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the first resource unit includes at least one of: the precoding resource block group of the signal, the minimum transmission unit of the signal, the resource unit of the first reference signal corresponding to the signal, and the minimum resource unit of the signal transmission pattern are determined.
Optionally, the storage medium is further arranged to store program code for performing the steps of: sending a signal to the second communication node comprises: and sending the signal to the second communication node according to the relevant transmission parameter of the signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the set of ports of the first reference signal is a subset of a set of demodulation reference signal ports of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the signal includes at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the first resource unit of the signal is determined based on at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the first resource unit of the signal is K times of the second resource unit and comprises at least one of the following characteristics: the frequency domain resource of the first resource unit is K times of the frequency domain resource of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time-frequency resources included by the first resource unit is K times of the number of the time-frequency resources included by the second resource unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of: when the signal is a demodulation reference signal and/or a measurement reference signal, determining a minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, and the transmission pattern of the signal includes at least one of: time domain resources occupied by the signal, frequency domain resources occupied by the signal, and code domain resources occupied by the signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the method for transmitting a signal for channel estimation to the second communication node comprises: notifying the second communication node of the information related to the first resource unit, the information related to the second resource unit being notified by the information related to the first resource unit; notifying the second communication node of the information related to the first resource unit, by the information related to the second resource unit, of the information related to the first resource unit;
optionally, the storage medium is further arranged to store program code for performing the steps of: before sending a signal for channel estimation to the second communication node, determining the time domain/frequency domain/code domain resources occupied by the second resource unit according to at least one of the following information: time domain information, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located.
Optionally, the storage medium is further arranged to store program code for performing the steps of: and determining the frequency domain/code domain resources occupied by the first resource unit according to the time domain information.
Optionally, the storage medium is further arranged to store program code for performing the steps of: determining the value of K according to at least one of the following ways, further comprising: determining the K value according to the system bandwidth according to the mode of informing the K value to the second communication node; determining the K value according to the bandwidth information corresponding to the second communication node; determining the K value according to the resource mapping mode of the signal; determining the K value according to the number of the sending resources fed back by the second communication node; and determining the K value according to the number of the time-frequency resources which can be used for controlling channel transmission and are included in the second resource unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of: transmitting a signal to a second communication node comprises: a type of the second resource unit notified to the second communication node, the type of the second resource unit comprising: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of: determining a set of demodulation reference signal ports of a control channel, wherein the set of demodulation reference signal ports of the control channel is a subset of a second set of reference signal ports; receiving the control channel on the determined control channel demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and is obtained according to the signaling information sent by the first communication node, the demodulation reference signal set of the broadcast channel, and the measurement reference signal port set.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: the sending resource information corresponding to the second communication node, the time parameter corresponding to the control channel, the port set number M1 of the demodulation reference signal, the control channel region type where the control channel is located, the time parameter corresponding to the control channel region where the control channel is located, the frequency domain resource index corresponding to the control channel, the control channel unit index of the control channel, and the control resource group index of the control channel.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the transmission resource satisfies at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the plurality of transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the demodulation reference signal port set of the control channel satisfies one of the following characteristics: a set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the demodulation reference signal port set of the control channel is obtained by one of the following modes: detecting a reference signal in the second reference signal port set, and selecting one or more reference signal ports in the second reference signal port set to form a demodulation reference signal port set of the control channel according to the receiving performance of the reference signal; detecting a control channel on each reference signal port of the second reference signal port set, wherein the reference signal set which is successfully detected forms a demodulation reference signal port set of the control channel; and the demodulation reference signal port set of the control channel is obtained according to the signaling information sent by the first communication node.
Optionally, the storage medium is further arranged to store program code for performing the steps of: determining a set of demodulation reference signal ports for a control channel comprises: it is assumed that one or more other control channels may occupy a port in a third set of reference signal ports, which is the difference between the second set of reference signal ports and the set of control channel demodulation reference signal ports.
Optionally, the storage medium is further arranged to store program code for performing the steps of: and under the condition that the control channel areas where the control channels are located are different, the determination methods of the demodulation reference signals of the control channels are different, and/or the detection methods of the control channels are different, and/or the minimum sending units of the demodulation reference signals of the control channels are different.
Optionally, the storage medium is further arranged to store program code for performing the steps of: determining the set of demodulation reference signal ports for the control channel comprises at least one of: in a first control channel region, the demodulation reference signals for the control channel are the second set of reference signal ports, and in a second control channel region, the demodulation reference signals for the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with frequency domain resources; the demodulation reference signal of the control channel in the second control channel region is changed along with frequency domain resources; in the first control channel region, the demodulation reference signal port of the control channel can be determined only according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel; and in the first control channel region, assuming that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, assuming that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the demodulation reference signal ports of the control channels in different control channel regions meet at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control regions are the same in number; the set of demodulation reference signal ports of the control channels in one control channel region is a subset of the set of demodulation reference signal ports of the control channels in another control region.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel regions are multiplexed by time division, frequency division and/or code division; the union set of different control channel regions is the same with the system bandwidth in the frequency domain; the union of the different control channel regions is the same bandwidth in the frequency domain as the second communication node.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the control channel region satisfies at least one of the following characteristics: acquiring the type of a control channel region contained in a time unit according to the time parameter information of the time unit; the configuration information sent by the first communication node indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the demodulation reference signal of the control channel satisfies at least one of the following characteristics: in a first control channel region, a first communication node is assumed to transmit a demodulation reference signal of a control channel only in a time unit for transmitting the control channel; in the second control channel region, it is assumed that a first communication node transmits a demodulation reference signal of the control channel in an agreed time unit and a time unit for transmitting the control channel, and it is assumed that the first communication node may not transmit the control channel of the second communication node in the agreed time unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the minimum transmission unit of the demodulation reference signal of the control channel further satisfies at least one of the following characteristics: the minimum sending unit is one or more control channel resource groups; the minimum sending unit is one or more control channel units; the minimum sending unit is a resource occupied by one or more candidate control channels; the minimum sending unit is a resource occupied by a search space with the same polymerization degree; the minimum sending unit is a resource occupied by all search controls of all polymerization degrees of the second communication node; the minimum transmission unit is the control channel region.
Optionally, the storage medium is further arranged to store program code for performing the steps of: in the first predetermined time unit, the same reference signal ports of different control areas are quasi-co-located, and in time units other than the second predetermined time unit, the same reference signal ports of different control areas do not have quasi-co-location relation.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of: determining a set of demodulation reference signal ports for a control channel, wherein the demodulation reference signal ports for the control channel are a subset of a second set of reference signal ports; transmitting the control channel to the second communication node on the determined demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and the second reference signal port set is obtained according to signaling information sent to a second communication node, a demodulation reference signal set of a broadcast channel, and a measurement reference signal port set.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: the sending resource information corresponding to the second communication node, the time parameter corresponding to the control channel, the port set number M1 of the demodulation reference signal, the control channel region type where the control channel is located, the time parameter corresponding to the control channel region where the control channel is located, the frequency domain resource index corresponding to the control channel, the control channel unit index of the control channel, and the control resource group index of the control channel.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the transmission resource satisfies at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the plurality of transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the demodulation reference signal port set of the control channel satisfies one of the following characteristics: the set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, the storage medium is further arranged to store program code for performing the steps of: determining a set of demodulation reference signal ports for a control channel comprises: and sending signaling information to the second communication node, wherein the signaling information comprises demodulation reference signal port information of the control channel.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the control channel areas where the control channels are located are different, the determination methods of demodulation reference signals of the control channels are different, and/or the sending methods of the control channels are different.
Optionally, the storage medium is further arranged to store program code for performing the steps of: under the condition that the control channel areas where the control channels are located are different, determining the demodulation reference signal port set of the control channels comprises at least one of the following methods: in a first control channel region, the demodulation reference signals for the control channel are the second set of reference signal ports, and in a second control channel region, the demodulation reference signals for the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; in the first control channel region, the demodulation reference signal port of the control channel can be determined according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel; and in the first control channel region, assuming that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, assuming that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the demodulation reference signal ports of the control channels in different control channel regions meet at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control regions are the same in number; the set of demodulation reference signal ports of the control channels in one control channel region is a subset of the set of demodulation reference signal ports of the control channels in another control region.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel region time domains overlap; different control channel regions are multiplexed by time division, frequency division and/or code division; the different control channel regions and the union fill the system bandwidth.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the control channel region is determined by: and acquiring a control channel region contained in a time unit according to the time parameter information of the time unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of: determining a set of demodulation reference signal ports for a control channel comprises: and sending configuration information to the second communication node, wherein the configuration information indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, the storage medium is further arranged to store program code for performing the steps of: determining a set of demodulation reference signal ports for a control channel comprises: transmitting, in a first control channel region, a demodulation reference signal of the control channel only in a time unit in which the control channel is transmitted; in a second control channel region, a demodulation reference signal of the control channel is transmitted in an agreed time unit, in which the control channel of the second communication node may not be transmitted, and a time unit in which the control channel is transmitted.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the minimum unit for reference signal transmission of the first control region is different from the minimum unit for reference signal transmission of the second control region.
Optionally, the storage medium is further arranged to store program code for performing the steps of: the minimum transmission units of different control channel regions further satisfy at least one of the following characteristics: the resource occupied by the candidate control channel in the search space in the first control channel region is the minimum sending unit; the resource occupied by a search space with the same aggregation degree in the first control channel region is the minimum sending unit; the resources occupied by all the search spaces of all the polymerization degrees in the first control channel region are the minimum sending unit; the minimum unit for reference signal transmission in the second control channel region is the second control channel region; the smallest unit of reference signal transmission in the second control channel region is the entire system bandwidth.
Optionally, the storage medium is further arranged to store program code for performing the steps of: in the first predetermined time unit, the same reference signal ports of different control areas are quasi-co-located, and in the time units except the second predetermined time unit, the same reference signal ports of different control areas do not have quasi-co-location relation.
According to the invention, a signal sent by a first communication node is received, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is used for determining the transmission parameter of the signal, and the second resource unit comprises at least one of the following: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB. Since the first resource element of the signal for channel estimation is K times of the second resource element, and channel estimation is performed according to the signal, so that the channel estimation is more accurate, therefore, the problem of how to improve the accuracy of the channel estimation in the process of transmitting the signal by using a control channel transmission mechanism and/or a beam mechanism which uses the DMRS as a demodulation reference signal in the related art can be solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
Fig. 1 is a block diagram of a hardware configuration of a mobile terminal of a signal receiving method according to an embodiment of the present invention;
fig. 2 is a flowchart of a signal receiving method according to an embodiment of the present invention;
fig. 3 is a flowchart of a signal transmission method according to an embodiment of the present invention;
fig. 4 is a flowchart of a receiving method of a control channel according to an embodiment of the present invention;
fig. 5 is a flowchart of a transmission method of a control channel according to an embodiment of the present invention;
FIG. 6 is a diagram one of the PRG of the control channel according to an embodiment of the present invention;
FIG. 7 is a diagram two of a PRG for a control channel according to an embodiment of the present invention;
fig. 8 is a diagram three of a PRG of a control channel in accordance with an embodiment of the present invention;
fig. 9 is a diagram of a PRG of a control channel in accordance with an embodiment of the present invention;
fig. 10 is a diagram five of a PRG of a control channel according to an embodiment of the present invention;
fig. 11 is a diagram six of a PRG of a control channel in accordance with an embodiment of the present invention;
fig. 12 is a diagram seven of a PRG of a control channel according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a minimum transmission unit according to an embodiment of the present invention;
fig. 14 is a first diagram illustrating a demodulation reference signal in a control channel according to an embodiment of the present invention;
FIG. 15 is a second diagram of a demodulation reference signal in a control channel according to an embodiment of the present invention;
fig. 16 is a third diagram illustrating a demodulation reference signal in a control channel according to an embodiment of the present invention;
fig. 17 is a fourth diagram illustrating a demodulation reference signal in a control channel according to an embodiment of the present invention;
FIG. 18 is a first diagram of control channel regions according to an embodiment of the present invention;
FIG. 19 is a second diagram of a control channel region according to an embodiment of the present invention;
fig. 20 is a first diagram illustrating downlink transmission according to an embodiment of the present invention;
FIG. 21 is a third diagram of a control channel region according to an embodiment of the present invention;
fig. 22 is a second diagram of downlink transmission according to an embodiment of the present invention;
fig. 23 is a third diagram illustrating downlink transmission according to an embodiment of the present invention;
FIG. 24 is a diagram illustrating a diagram of obtaining a demodulation reference signal according to an embodiment of the invention;
FIG. 25 is a first diagram of control domain subbands according to an embodiment of the present invention;
FIG. 26 is a second diagram of control domain subbands according to an embodiment of the present invention;
fig. 27 is a schematic diagram of frequency domain resources corresponding to port sets of demodulation reference signals according to an embodiment of the present invention;
fig. 28 is a diagram of control channel element CCE to port set correspondence of demodulation reference signals according to an embodiment of the invention;
FIG. 29 is a schematic diagram of a PRG cell according to an embodiment of the present invention;
fig. 30 is a block diagram of a signal receiving apparatus according to an embodiment of the present invention;
fig. 31 is a block diagram of a configuration of a signal transmission apparatus according to an embodiment of the present invention;
fig. 32 is a block diagram of a structure of a receiving apparatus of a control channel according to an embodiment of the present invention;
fig. 33 is a block diagram of a transmitting apparatus of a control channel according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1
The method embodiment provided by embodiment 1 of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking the mobile terminal as an example, fig. 1 is a block diagram of a hardware structure of the mobile terminal of a signal receiving method according to an embodiment of the present invention. As shown in fig. 1, the mobile terminal 10 may include one or more (only one shown) processors 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data, and a transmitting device 106 for communication functions. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration and is not intended to limit the structure of the electronic device. For example, the mobile terminal 10 may include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.
The memory 104 may be used to store software programs and modules of application software, such as program instructions/modules corresponding to the signal receiving method in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by executing the software programs and modules stored in the memory 104, so as to implement the method described above. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a Network adapter (NIC) that can be connected to other Network devices through a base station to communicate with the internet. In one example, the transmission device 106 can be a Radio Frequency (RF) module, which is used to communicate with the internet in a wireless manner.
In this embodiment, a signal receiving method operating in the mobile terminal is provided, and fig. 2 is a flowchart of the signal receiving method according to the embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:
step S202, receiving a signal sent by a first communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; the first resource unit is used for determining transmission parameters of signals, and the second resource unit comprises at least one of the following: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Through the steps, since the first resource unit of the signal for channel estimation is K times of the second resource unit, and channel estimation is performed according to the signal, so that the channel estimation is more accurate, therefore, the problem of how to improve the accuracy of the channel estimation in the process of transmitting the signal by using a control channel transmission mechanism and/or a beam mechanism which uses the DMRS as a demodulation reference signal in the related art can be solved.
Optionally, the first resource unit includes at least one of: the method comprises the steps of pre-coding resource block groups of signals, minimum sending units of the signals, resource units of first reference signals corresponding to the signals, and minimum resource units of signal sending patterns.
Optionally, after receiving the signal transmitted by the first communication node, the method further includes: and acquiring a channel estimation value of the signal according to the relevant transmission parameter of the signal.
Optionally, the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the port set of the first reference signal is a subset of a port set of a demodulation reference signal of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the first resource unit of the signal is determined according to at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the K times the first resource unit of the signal to the second resource unit includes at least one of the following features: the frequency domain resource of the first resource unit is K times that of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
Optionally, when the signal is a demodulation reference signal and/or a measurement reference signal, a minimum transmission unit of the signal satisfies at least one of the following characteristics: the frequency domain length corresponding to the minimum sending unit is the minimum frequency domain unit for sending the signal; the minimum sending unit is the minimum unit with the same signal precoding; the frequency domain length corresponding to the minimum sending unit is the minimum frequency domain unit with the same signal precoding; the time domain and/or the frequency domain corresponding to the minimum sending unit is the minimum resource unit of which the time domain and/or the frequency domain of the signal can be interpolated; and the demodulation reference signal of the time-frequency resource in the minimum sending unit is the signal.
Optionally, in a case that the signal is a demodulation reference signal and/or a measurement reference signal, determining a minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by signals, frequency domain resources occupied by signals, and code domain resources occupied by signals.
Optionally, the receiving the signal sent by the first communication node comprises: receiving the related information of the first resource unit notified by the first communication node, and obtaining the related information of the second resource unit according to the related information of the first resource unit; and receiving the related information of the second resource unit notified by the first communication node, and obtaining the related information of the first resource unit according to the related information of the second resource unit. For another example, the base station notifies the PRG of the control channel corresponding to the terminal, and the terminal can obtain the aggregation level of the candidate control channels corresponding to the terminal. For example, the PRG is K times larger than the CCE, then the aggregation level of the candidate control channel channels at this time is:
optionally, the time domain/frequency domain/code domain resource occupied by the second resource unit is determined according to at least one of the following information: time domain parameters, a Cell Radio Network Temporary Identifier (Cell Radio Network Temporary Identifier, referred to as C-RNTI) of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located.
Optionally, the frequency domain/code domain resource occupied by the first resource unit is determined according to the time domain information.
Optionally, determining the K value according to at least one of the following ways further comprises: receiving a K value notified by a first communication node; determining a K value according to the system bandwidth; determining a K value according to the bandwidth information corresponding to the second communication node; determining a K value according to a resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node.
Optionally, the receiving the signal transmitted by the first communication node comprises: receiving the type of the second resource unit notified by the first communication node, the type of the second resource unit including: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, the manner of notifying by the first communication node includes: dynamic signaling, and/or higher layer semi-static signaling.
In the present embodiment, a signal transmission method operating in the mobile terminal is provided, and fig. 3 is a flowchart of the signal transmission method according to the embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:
step S302, a signal is sent to a second communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; the first resource unit is used for determining transmission parameters of signals, and the second resource unit comprises at least one of the following: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource of the second communication node, a resource occupied by a signal and a physical resource block PRB.
Through the steps, since the first resource element of the signal for channel estimation is K times of the second resource element, and channel estimation is performed according to the signal, so that the channel estimation is more accurate, the problem of how to improve the accuracy of the channel estimation in the process of transmitting the signal by using a control channel transmission mechanism and/or a beam mechanism which uses the DMRS as a demodulation reference signal in the related art can be solved.
Optionally, the first resource unit includes at least one of: the method comprises the steps of precoding resource block groups of signals, minimum sending units of the signals, resource units of first reference signals corresponding to the signals, and minimum resource units for determining signal sending patterns.
Optionally, the sending the signal to the second communication node comprises: and sending the signal to the second communication node according to the relevant transmission parameter of the signal.
Optionally, the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the port set of the first reference signal is a subset of a demodulation reference signal port set of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the first resource unit of the signal is determined according to at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the K times the first resource unit of the signal to the second resource unit includes at least one of the following features: the frequency domain resource of the first resource unit is K times that of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
Optionally, when the signal is a demodulation reference signal and/or a measurement reference signal, determining a minimum resource unit of a signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by signals, frequency domain resources occupied by signals, and code domain resources occupied by signals.
Optionally, the sending the signal for channel estimation to the second communication node comprises: informing the second communication node of the related information of the first resource unit by the related information of the first resource unit; informing the related information of the first resource unit to the second communication node through the related information of the second resource unit;
Optionally, before sending the signal for channel estimation to the second communication node, the time domain/frequency domain/code domain resource occupied by the second resource unit is determined according to at least one of the following information: the identification information comprises time domain information, identification information of a second communication node, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located, wherein the identification information can be a cell radio network temporary identifier C-RNTI or an NR-RNTI.
Optionally, the frequency domain/code domain resource occupied by the first resource unit is determined according to the time domain information.
Optionally, determining the K value according to at least one of the following manners, further comprising: determining the K value according to the system bandwidth according to the mode of informing the K value to the second communication node; determining a K value according to the bandwidth information corresponding to the second communication node; determining a K value according to a resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node.
Optionally, the sending the signal to the second communication node comprises: a type of the second resource unit notified to the second communication node, the type of the second resource unit comprising: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
In the present embodiment, a method for receiving a control channel operating in the mobile terminal is provided, and fig. 4 is a flowchart of a method for receiving a control channel according to an embodiment of the present invention, as shown in fig. 4, the flowchart includes the following steps:
step S402, determining a demodulation reference signal port set of a control channel, wherein the demodulation reference signal port set of the control channel is a subset of a second reference signal port set;
step S404, receiving a control channel on the determined control channel demodulation reference signal port;
wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and is obtained according to the signaling information sent by the first communication node, the demodulation reference signal set of the broadcast channel, and the measurement reference signal port set.
Through the above steps, since the demodulation reference signal port set of the determined control channel is a subset of the second reference signal port set, and channel estimation is performed according to the signal transmitted on the control channel, so that the channel estimation is more accurate, the problem of how to improve the accuracy of the channel estimation in the process of transmitting the signal by using the control channel transmission mechanism and/or the beam mechanism which uses the DMRS as the demodulation reference signal in the related art can be solved.
Optionally, the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: sending resource information corresponding to a second communication node, a time parameter corresponding to a control channel, the number M1 of port sets of demodulation reference signals, the type of a control channel region where the control channel is located, a time parameter corresponding to a control channel region where the control channel is located, a frequency domain resource index corresponding to the control channel, a control channel unit index of the control channel, a control resource group index of the control channel, and receiving signaling information sent by the first communication node, wherein the signaling information comprises related information of the demodulation reference signals of the control channel; the transmission resource is a transmission resource adopted by the first communication node in a communication link for receiving a signal sent by the first communication node, and the transmission resource of the first communication node includes at least one of the following resource types: the method comprises the steps of sending a beam resource, a port resource, a precoding matrix resource, a time resource, a frequency domain resource and a sequence resource, wherein the sending resource is a resource used by a first communication node for sending signals. Wherein the different control channel regions include: the first communication node assumes that it is a SU-MIMO transmission mode in the first control region; the first communication node assumes a mixed transmission mode of SU-MIMO and MU-MIMO in the first control region. Optionally, the transmission resource satisfies at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the multiple transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed. The transmission port is a port for a reference signal.
Optionally, the demodulation reference signal port set of the control channel satisfies one of the following characteristics: the set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, the set of demodulation reference signal ports of the control channel is obtained by one of the following methods: detecting a reference signal in the second reference signal port set, and selecting one or more reference signal ports in the second reference signal port set to form a demodulation reference signal port set of a control channel according to the receiving performance of the reference signal; detecting a control channel on each reference signal port of the second reference signal port set, wherein the reference signal set which is successfully detected forms a demodulation reference signal port set of the control channel; and the demodulation reference signal port set of the control channel is obtained according to the signaling information sent by the first communication node.
Optionally, the set of demodulation reference signal ports of the control channel satisfies at least one of the following characteristics: assuming that a demodulation reference signal port set of the control channel at most comprises M2 reference signals, wherein M2 is a natural number; assume that the demodulation reference signal port set of the control channel includes M2 reference signals, where M2 is a natural number.
Optionally, determining the demodulation reference signal port set of the control channel includes: assume that one or more other control channels may occupy a port in a third set of reference signal ports, the third set of reference signal ports being a difference set of the second set of reference signal ports and the set of control channel demodulation reference signal ports.
Optionally, when the control channel areas where the control channels are located are different, the determination method of the demodulation reference signals of the control channels is different, and/or the detection method of the control channels is different, and/or the minimum transmission units of the demodulation reference signals of the control channels are different.
Optionally, determining the set of demodulation reference signal ports for the control channel comprises at least one of: in the first control channel region, the demodulation reference signals of the control channel are a second set of reference signal ports, and in the second control channel region, the demodulation reference signals of the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with the frequency domain resource; the demodulation reference signal of the control channel in the second control channel region is changed along with the frequency domain resource; in the first control channel region, the demodulation reference signal port of the control channel can be determined only according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel; in the first control channel region, it is assumed that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, it is assumed that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, the demodulation reference signal ports of the control channels in different control channel regions satisfy at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control areas are the same in number; the set of demodulation reference signal ports for control channels in one control channel region is a subset of the set of demodulation reference signal ports for control channels in another control region.
Optionally, the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; multiplexing different control channel regions in a time division, and/or frequency division, and/or code division mode; the union set of different control channel regions is the same with the system bandwidth in the frequency domain; the union of the different control channel regions is the same bandwidth in the frequency domain as the second communication node.
Optionally, the control channel region satisfies at least one of the following characteristics: acquiring the type of a control channel region contained in a time unit according to the time parameter information of the time unit; the configuration information sent by the first communication node indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, the demodulation reference signal of the control channel satisfies at least one of the following characteristics: in the first control channel region, the first communication node is assumed to transmit a demodulation reference signal of the control channel only in a time unit of transmitting the control channel; in the second control channel region, it is assumed that the first communication node transmits the demodulation reference signal of the control channel in an agreed time unit and a time unit for transmitting the control channel, and it is assumed that the first communication node may not transmit the control channel of the second communication node in the agreed time unit.
Optionally, the minimum transmission unit satisfies at least one of the following characteristics: the minimum sending unit is a precoding resource unit corresponding to the reference signal; if the reference signal is transmitted, the minimum transmitting unit is the minimum resource unit for transmitting the reference signal; the minimum sending unit is the minimum resource unit of the reference signal time frequency interpolation
Optionally, the minimum transmission unit of the demodulation reference signal of the control channel further satisfies at least one of the following characteristics: the minimum sending unit is one or more control channel resource groups; the minimum sending unit is one or more control channel units; the minimum sending unit is the resource occupied by one or more candidate control channels; the minimum sending unit is a resource occupied by a search space with the same polymerization degree; the minimum sending unit is a resource occupied by all search controls of all polymerization degrees of the second communication node; the minimum transmission unit is a control channel region.
Optionally, the same reference signal port of different control regions is quasi co-located; or in a first predetermined time unit, the same reference signal ports of different control areas are quasi co-located, and in time units other than the first predetermined time unit, the same reference signal ports of different control areas do not have quasi co-location relation.
Optionally, before determining that the set of demodulation reference signal ports of the control channel is a subset of the second set of reference signal ports, further comprising: receiving configuration information sent by a first communication node, wherein the configuration information indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located, and the configuration information is sent in at least one of the following manners: broadcast message sending, high-level signaling sending, dynamic signaling sending and appointed rules.
Alternatively, where quasi co-location (quasi co-location) is indicated between different reference signals, the large-scale channel characteristic parameter of one reference signal may be derived from the large-scale channel characteristic parameter of another reference signal.
In this embodiment, a control channel transmission method operating in the mobile terminal is provided, and fig. 5 is a flowchart of a control channel transmission method according to an embodiment of the present invention, as shown in fig. 5, the flowchart includes the following steps:
Step S502, determining a demodulation reference signal port set of a control channel, wherein the demodulation reference signal port of the control channel is a subset of a second reference signal port set;
step S504, sending a control channel to the second communication node on the determined demodulation reference signal port;
wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and is obtained according to the signaling information sent to the second communication node, the demodulation reference signal set of the broadcast channel, and the measurement reference signal port set.
Through the above steps, since the demodulation reference signal port set of the determined control channel is a subset of the second reference signal port set, and channel estimation is performed according to the signal transmitted on the control channel, so that the channel estimation is more accurate, the problem of how to improve the accuracy of the channel estimation in the process of transmitting the signal by using the control channel transmission mechanism and/or the beam mechanism which uses the DMRS as the demodulation reference signal in the related art can be solved.
Optionally, the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: sending resource information corresponding to the second communication node, a time parameter corresponding to the control channel, the port set number M1 of the demodulation reference signal, the type of a control channel region where the control channel is located, a time parameter corresponding to the control channel region where the control channel is located, a frequency domain resource index corresponding to the control channel, a control channel unit index of the control channel, and a control resource group index of the control channel; the transmission resource is a transmission resource adopted by the first communication node in a communication link of a signal transmitted to the second communication node, and the transmission resource comprises at least one of the following resource types: a transmit beam resource, a transmit port resource, a transmit precoding matrix resource, a transmit time resource, a transmit frequency domain resource, and a transmit sequence resource, wherein the transmit resource is a resource used to transmit a signal to a second communication node. The transmission port is a port for a reference signal.
Optionally, the transmission resource satisfies at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the multiple transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, the demodulation reference signal port set of the control channel satisfies one of the following characteristics: the set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, determining the demodulation reference signal port set of the control channel comprises: and sending signaling information to the second communication node, wherein the signaling information comprises demodulation reference signal port information of the control channel.
Optionally, the control channel regions where the control channels are located are different, the determination methods of the demodulation reference signals of the control channels are different, and/or the transmission methods of the control channels are different.
Optionally, in a case that the control channel regions in which the control channels are located are different, determining the demodulation reference signal port set of the control channel includes at least one of the following methods: in the first control channel region, the demodulation reference signals of the control channel are a second set of reference signal ports, and in the second control channel region, the demodulation reference signals of the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; in the first control channel region, the demodulation reference signal ports of the control channels can be determined according to the number of ports included in the demodulation reference signals of the control channels, and in the second control channel region, the demodulation reference signal ports of the control channels cannot be determined according to the number of ports included in the demodulation reference signals of the control channels; in the first control channel region, it is assumed that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, it is assumed that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, the demodulation reference signal ports of the control channels in different control channel regions satisfy at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control areas are the same in number; the set of demodulation reference signal ports for control channels in one control channel region is a subset of the set of demodulation reference signal ports for control channels in another control region.
Optionally, the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel region time domains overlap; multiplexing different control channel regions in a time division, and/or frequency division, and/or code division mode; the different control channel regions and sets occupy the system bandwidth.
Optionally, the control channel region is determined by: and acquiring a control channel region contained in the time unit according to the time parameter information of the time unit.
Optionally, determining the demodulation reference signal port set of the control channel comprises: and sending configuration information to the second communication node, wherein the configuration information indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, determining the demodulation reference signal port set of the control channel comprises: transmitting a demodulation reference signal of a control channel only in a time unit of transmitting the control channel in a first control channel region; in the second control channel region, the demodulation reference signal of the control channel is transmitted in an appointed time unit, in which the control channel of the second communication node may not be transmitted, and the time unit in which the control channel is transmitted.
Optionally, the minimum unit for reference signal transmission of the first control region is different from the minimum unit for reference signal transmission of the second control region.
Optionally, the minimum transmission units of different control channel regions further satisfy at least one of the following characteristics: the resource occupied by the candidate control channel in the search space in the first control channel region is a minimum sending unit; the resource occupied by a search space with the same aggregation degree in the first control channel region is the minimum sending unit; the resource occupied by all the search spaces of all the polymerization degrees in the first control channel region is a minimum sending unit; the minimum unit for sending the reference signal in the second control channel region is the second control channel region; the smallest unit of reference signal transmission in the second control channel region is the entire system bandwidth.
Optionally, the same reference signal port of different control regions is quasi co-located; or in a first predetermined time unit, the same reference signal ports of different control areas are quasi-co-located, and in time units other than the first predetermined time unit, the same reference signal ports of different control areas do not have quasi-co-location relation.
Optionally, before determining that the set of demodulation reference signal ports of the control channel is a subset of the second set of reference signal ports, further comprising: sending configuration information to a second communication node, wherein the configuration information indicates time units where different control channel regions are located and/or time-frequency resources where different control channel regions are located, and the configuration information is sent in at least one of the following ways: broadcast message sending, high-level signaling sending, dynamic signaling sending and appointed rules.
The embodiment of the invention provides a solution for PRG and QCL of demodulation reference signals of a control channel and a control channel, the pattern of the demodulation reference signals, the acquisition of a port of the demodulation reference signals and the detection of the control channel in the control channel transmission mechanism and/or the control channel transmitted by a beam mechanism by taking DMRS as the demodulation reference signals.
By adopting the embodiment of the invention, the problems of the related detection of the control channel and the related acquisition of the demodulation reference signal of the control channel under the control channel transmission mechanism taking the beam mechanism and/or the DMRS as the demodulation reference signal can be solved. Specifically, the above embodiments can solve the PRG problem of the control channel, increase the channel estimation performance of the demodulation reference signal of the control channel, and obtain the beam diversity gain.
Moreover, a related solution is provided for the acquisition of the QCL information of the control channel demodulation reference signal, and the acquisition of the QCL information of the control channel demodulation reference signal in the case of no CRS is solved.
Further, for the acquisition of the control channel demodulation reference signal port, the acquisition of the control channel demodulation reference signal pattern provides a relevant solution, and the control channel is transmitted by a transmission beam supporting MU-MIMO transmission and/or UE-Specific.
Furthermore, the above embodiment proposes that for different control channel regions, the detection methods of the control channels are different, and the control channel region supporting SU-MIMO transmission and the SU-MIMO/MU-MIMO transparent switching region increase the capacity of the control channel and reduce the complexity of detecting the control channel by the terminal.
It should be noted that, in the above embodiment, the first communication node may be a base station, and the second communication node may be a terminal, and the following description takes the first communication node as the base station and the second communication node as the terminal as an example. In the following embodiments, the base station transmits a signal for channel estimation, which may be a control channel signal, a demodulation reference signal, a measurement reference signal, or a data channel signal, to the terminal. In the following embodiments, a control channel Resource group, similar to an REG (Resource element group) (or EREG (Enhanced Resource element group)) in LTE, or an NR-CCE used in the future for NR, may also be an REG of an uplink control channel, or other equivalent information, which does not affect the inventive features of the embodiments of the present invention. A Control Channel Element, similar to a Control Channel Element (CCE) in LTE (or an Enhanced Control Channel Element (ECCE)), or an NR-CCE employed in the NR future.
Similar to the relevant concept in LTE, in short, one or more REGs form a CCE, where the CCE is a basic unit mapped by Downlink Control Information (DCI), one or more CCEs form a candidate Control channel, one or more candidate Control channels form a search space, the number of CCEs occupied by different candidate Control channels in a search space is the same, and the number of CCEs occupied by a candidate Control channel is referred to as a aggregation level. And the terminal searches the exclusive control information in the exclusive search space and searches the public control information in the public search space. The search space and the candidate control channel may also be other equivalent information, which does not affect the creativity of the embodiment of the present invention.
Detailed description of the preferred embodiment 1
In this embodiment, a Precoding resource block Group (similar to PRG in LTE) of a control channel includes K second resource units, where the second resource units include at least one of the following: a control channel resource group REG, a control channel element CCE, a candidate control channel, a search space under a polymerization degree of the control channel, a dedicated search space of the second communication node, all search spaces of the second communication node, a subband where the control channel is located, a bandwidth corresponding to the second communication node, a frequency domain width occupied by the signal, and a PRB. The REGs in this embodiment are units of control channel resources, a CCE is formed by one or more REGs, and a CCE is a minimum resource unit mapped by one piece of control information. However, in the embodiment of the present invention, the REG may be other equivalent information, such as an NR-REG, without affecting the creativity of the embodiment of the present invention. The CCE may also be other equivalent information, such as NR-CCE, without affecting the creativity of the embodiments of the present invention. The number of CCEs included in one candidate control channel is referred to as the aggregation level of the candidate control channels, a plurality of candidate control channels with the same aggregation level form one search space, and the dedicated search space of one terminal is formed by a plurality of search spaces. The search space of one terminal includes a private search space and a public search space.
Fig. 6 is a schematic diagram of a PRG of a control channel according to an embodiment of the present invention, as shown in fig. 6, the PRG of the control channel is one REG, and at this time, the same reference signal port is allowed to use different precodes (of course, the same precode may also be used), that is, different beams transmit the control channel to a terminal, so as to obtain diversity gain, but because the unit of the PRG is small at this time, the terminal can only perform channel interpolation and filtering in the PRG, so that the channel estimation performance is limited, and the reception performance of the control channel is affected. On the other hand, since the channel estimates of different PRGs cannot be interpolated, each PRG has its own demodulation reference signal, and the load of the demodulation reference signal is also a problem. In order to achieve trade-off between channel estimation performance, demodulation reference signal loading, and beam diversity gain, it may be preferably specified or informed that the PRG of the control channel includes K REGs, where the K value is preferably smaller than or equal to M and is a natural number greater than 1, where M is the number of REGs included in one CCE, and of course K may also be a natural number greater than M.
Fig. 7 is a schematic diagram two of a PRG of a control channel according to an embodiment of the present invention, as shown in fig. 7, the PRG of the control channel may also be one CCE, where one CCE includes 9 REGs, that is, precoding adopted by one reference signal port on the one CCE is the same, or a number K of CCEs included in one PRG may be agreed or notified, where K is a natural number.
Fig. 8 is a third schematic diagram of a PRG of a control channel according to an embodiment of the present invention, as shown in fig. 8, the PRG of the control channel may also be a candidate control channel, and in fig. 8, one candidate control channel is composed of 2 CCEs, which is only an example and does not exclude the case of the number of other CCEs, and the aggregation degrees corresponding to the candidate control channels are different, that is, the number of CCEs corresponding to one candidate control channel is different, at this time, the size of the PRG is different, for example, if the number of CCEs included in the candidate control channel 1 is 1, the size of the PRG is 1 CCE, and if the number of CCEs included in the candidate control channel 2 is 2, the size of the PRG is 2 CCEs. If the number of CCEs included in the candidate control channel 3 is 4, the PRG size is 4 CCEs. If the number of CCEs included in the candidate control channel 4 is 8, the PRG size is 8 CCEs. In another embodiment, the size of the PRG may be determined according to the aggregation level set corresponding to the terminal, for example, the size of the PRG is the lowest aggregation level in the aggregation levels corresponding to the terminal, and for example, the aggregation level set corresponding to the terminal is {1,2,4}, the size of the PRG of the terminal is 1 CCE (the minimum aggregation level in the aggregation level), or the size of the PRG is the maximum in the aggregation level set corresponding to the terminal, or the average aggregation level is determined.
Fig. 9 is a fourth schematic diagram of a PRG of a control channel according to an embodiment of the present invention, and as shown in fig. 9, the PRG of the control channel is a resource corresponding to all candidate control channels in a aggregation level corresponding to a terminal, that is, a search space. When the terminal has a plurality of search spaces, the PRGs of different search spaces are different (due to different aggregation degrees of different search spaces, the number of candidate control channels corresponding to different search spaces is different); or determining the size of the PRG according to the search space of the maximum polymerization degree of the terminal; or determining the size of the PRG according to the search space of the minimum polymerization degree of the terminal; alternatively, fig. 10 is a schematic diagram five of the PRG of the control channel according to the embodiment of the present invention, as shown in fig. 10, the proprietary search space is composed of a search space with a degree of aggregation {1,2,4,8}, where the search space with a degree of aggregation of 1 includes 6 candidate control channels, including 6 CCEs; the search space with aggregation level of 2 includes 6 candidate control channels including 12 CCEs, the search space with aggregation level of 4 includes 2 candidate control channels including 8 CCEs, the search space with aggregation level of 8 includes 2 candidate control channels including 16 CCEs, and these CCEs may overlap, and one way of the PRG at this time is to take the greatest common divisor of the total CCE numbers corresponding to each search space, for example, the greatest common divisor of (6, 12,8, 16), that is, 2 CCEs; or the PRG at this time is that the total number of CCEs included in all search spaces is the smallest, and the PRG is 6 CCEs at this time, or the PRG is that the total number of CCEs included in all search spaces is the largest, and the PRG is 16 CCEs at this time.
In an optional implementation manner of this embodiment, the PRG is a resource configuration corresponding to the dedicated search space of the terminal.
In an optional implementation manner of this embodiment, the PRG is a resource configuration corresponding to all search spaces of the terminal.
In an optional implementation manner of this embodiment, the PRG is a control domain resource corresponding to a terminal, and fig. 11 is a sixth schematic diagram of a PRG of a control channel according to an embodiment of the present invention, as shown in fig. 11, in different time units, bandwidths of the control domain resource corresponding to the terminal may be different, so that sizes of the PRG are also different, and a bandwidth allocated to the terminal in fig. 11 is the same as the control domain bandwidth. Fig. 12 is a seventh schematic diagram of a PRG of a control channel according to an embodiment of the present invention, as shown in fig. 12, a control domain bandwidth of a terminal is smaller than a bandwidth of the terminal, where the bandwidth of the terminal is a maximum frequency domain range that a base station may allocate to the terminal for a signal thereof. The control domain bandwidth is the maximum bandwidth of the control information of the terminal or the control channel hopping, and the hopping can be hopping in one time unit or hopping in different time units. In fig. 12, the bandwidth length and the position of the control field in different time units are not changed, and in another embodiment of this example, the control resource is used.
In this embodiment, the PRG indicates that the base station notifies the terminal, the precoding used by the same reference signal port in the PRG is the same, and the terminal itself decides whether to perform joint channel estimation in the PRG, for example, the terminal detects that channel frequency selection/time selection is more serious, even if one PRG cannot perform joint channel estimation of the channel, if the frequency selection is not serious, the joint channel estimation can be performed, so as to filter noise and suppress interference. These may be decided by the terminal itself. And the terminal can jointly acquire channel large-scale information such as delay spread, doppler shift, average delay, departure angle and arrival angle measurement by adopting the reference signals of the PRG area. At this time, even if the physical resources corresponding to the PRG are discrete, the terminal only needs to acquire information such as channel large-scale information according to the demodulation reference signal in the PRG, and the base station only informs the terminal that the precoding used by the same reference signal port is the same in the PRG resource unit, wherein the precoding includes radio frequency precoding and digital precoding, and in short, the transmission beams used by the same reference signal are the same. The beams used by different PRG units may be different and may not be able to perform joint channel estimation. When the reference signal is a demodulation reference signal, the transmission beams of all time-frequency resources corresponding to the demodulation reference signal port are the same in the PRG resource unit, or it indicates that the transmission beams on the demodulation reference signal time-frequency resources corresponding to the demodulation reference signal port are the same in the PRG resource unit, and at this time, the transmission beams used by the demodulation reference signal and the control information may be different, for example, based on an open loop manner.
In fig. 6 to 10, REGs 0 to REG8 are only logical indexes, and the time-frequency resources occupied by each REG may be discrete or continuous. CCEn and CCEn +1 are also only logical indexes, and the time-frequency resources occupied by each CCE may be continuous or discrete.
In the present invention, the precoding resource block group may also be referred to as a precoding granularity unit, or other equivalent names, which does not affect the inventive step of the present invention.
Specific example 2
In this embodiment, the minimum transmission unit of the reference signal includes K second resource units, where the second resource units include at least one of the following units: a control channel resource group REG, a control channel element CCE, a candidate control channel, a search space of a control channel under a polymerization degree, a dedicated search space of the second communication node, all search spaces of the second communication node, a control domain subband, a bandwidth corresponding to the second communication node, a frequency domain width occupied by the signal, and a PRB. In this embodiment, similar parts to the above-described method for determining the PRG are omitted for brevity.
In this embodiment, the minimum transmission unit of the reference signal includes at least one of the following information: if the reference signal is transmitted, the minimum unit transmitted by the reference signal is the minimum transmission unit, wherein the reference signal occupies part of time-frequency resources in the minimum transmission unit, and the time-frequency resources are similar to REs in LTE, then the minimum transmission unit is the minimum frequency domain transmission unit; the minimum sending unit is a minimum resource unit of the reference signal capable of performing time-frequency interpolation; channel estimates from the same reference signal port in the same time unit cannot be interpolated in different minimum units; the minimum sending unit is a PRG unit; the time-frequency resource in the minimum sending unit may use the reference signal as a demodulation reference signal.
Fig. 13 is a schematic diagram of a minimum transmission unit according to an embodiment of the present invention, and as shown in fig. 13, when the minimum transmission unit of the reference signal is larger than one candidate control channel, the terminal may obtain a channel estimation value based on the reference signal in the minimum transmission unit, and the channel estimation value may be demodulated by using all candidate control channels in the minimum transmission unit. In one way, the control channel demodulation reference signal is transmitted in the minimum transmission unit in each time unit or a predetermined time unit for enhancing the estimation performance of the control channel demodulation reference signal, and a plurality of users can share one set of demodulation reference signals. Or as long as the control channel of one terminal is transmitted, the demodulation reference signal is transmitted by the minimum transmission unit.
Specific example 3
In this embodiment, the base station sends the control channel to the terminal in a control channel region by using a UE-Specific beam sending manner. And the base station sends a control channel and a reference signal to the terminal, wherein a first resource unit related to the reference signal is K times of a second resource unit, and K is a natural number. The first resource unit is a minimum resource unit for determining the signal transmission pattern, and the second resource unit is at least one of the following resource units: the resource allocation method comprises the following steps of a control channel resource group REG, a control channel unit CCE, a candidate control channel, a search space of the control channel under a polymerization degree, a special search space of a second communication node, all search spaces (including the special search space and a public search space) of the second communication node, a sub-band where the control channel is located, a bandwidth corresponding to the second communication node, a frequency domain width occupied by a signal and a PRB.
A transmission pattern of the reference signal is determined according to the first resource unit; wherein the transmission pattern of the signal includes at least one of the following information: time domain resources and/or frequency domain resources occupied by the signals, and code domain resources occupied by the signals.
For example, the second resource unit is a candidate control channel, each candidate control channel in the dedicated search space of the terminal has a demodulation reference signal, and the demodulation reference signal of each candidate control channel is used for demodulating the signal of the candidate control channel. Fig. 14 is a first schematic diagram of demodulation reference signals in control channels according to an embodiment of the present invention, as shown in fig. 14, each candidate control channel has a respective independent demodulation reference signal, and since different candidate control channels included in a dedicated search space of a terminal may be control channels sent by a base station to different terminals when the terminal detects the control channel blindly, beams used by the control channels of different terminals may be different, it is necessary to carry its independent demodulation reference signal in each candidate control channel, and resources occupied by the first set to the sixth set of demodulation reference signals in fig. 14 are only examples, and do not exclude other situations, for example, different positions occupied by the demodulation reference signals in different candidate control channels and different numbers of occupied resources. In summary, the minimum resource unit of the control channel demodulation reference signal pattern is determined as a candidate control channel.
For another example, the second resource unit is a dedicated search space, and all candidate control channels in the dedicated search space with the same aggregation level of the terminal share one set of demodulation reference signal resources. Fig. 15 is a second schematic diagram of a demodulation reference signal in a control channel according to an embodiment of the present invention, and as shown in fig. 15, a minimum resource unit of a control channel demodulation reference signal pattern is determined to be a dedicated search space in a aggregation level, and a transmission pattern of the reference signal is determined according to resources of the dedicated search space.
For another example, the second resource unit is a dedicated search space, and all search spaces of the terminal share a set of demodulation reference signal resources. Fig. 16 is a third schematic diagram of a demodulation reference signal in a control channel according to an embodiment of the present invention, and as shown in fig. 16, a minimum resource unit of a control channel demodulation reference signal pattern is determined as a dedicated search space, and a transmission pattern of the reference signal is determined according to resources of the dedicated search space.
For another example, if the second resource element is one REG, there is a demodulation reference signal in each REG.
In fig. 15 to 16, the time-frequency resources occupied by the demodulation reference signal in the second resource unit are only examples, and this embodiment does not exclude other resource occupancy.
As explained in detail below, in this embodiment, the minimum resource element of the demodulation reference signal transmission pattern is determined, and in a first embodiment, the transmission pattern of the demodulation reference signal is determined according to the minimum resource element, as shown in fig. 14 to 16, the LTE-like CRS or DMRS is per PRB, and the patterns of these reference signals are the same or similar, where there is a demodulation reference signal pattern in the minimum resource element of the determined demodulation reference signal, where there is a same or similar transmission pattern in different minimum resource elements, and there may be no demodulation reference signal in resource elements smaller than the minimum resource element. For example, if the minimum resource unit of the demodulation reference signal transmission pattern is determined to be one REG, each REG has a demodulation reference signal time-frequency resource, and if the minimum resource unit of the demodulation reference signal transmission pattern is determined to be one CCE, each CCE has a demodulation reference signal time-frequency resource, and at this time, one REG constituting one CCE has no demodulation reference signal time-frequency resource.
In another embodiment, the demodulation reference signal may be used for demodulating signals in all time-frequency resources in the minimum resource unit (where all the time-frequency resources are time-frequency resources corresponding to the demodulation reference signal port, and it may be necessary to remove time-frequency resources occupied by other demodulation reference signal ports orthogonal to the demodulation reference signal port in a time division/frequency division manner). Fig. 17 is a fourth schematic diagram of a demodulation reference signal in a control channel according to an embodiment of the present invention, as shown in fig. 17, although the second resource unit is formed by all candidate control channels with the same aggregation degree, that is, the second resource unit is a search space, but the demodulation reference signal transmission pattern in each candidate control channel is similar or identical, at this time, the minimum resource unit of the demodulation reference signal transmission pattern is determined to be a search space, which indicates that all time-frequency resources in the minimum resource unit share one set of demodulation reference signal resources.
Specific example 4
And the base station sends a control channel and a reference signal to the terminal, wherein a first resource unit related to the reference signal is K times of a second resource unit, and K is a natural number. Wherein the first resource unit is a resource unit of a first reference signal corresponding to the signal, the reference signal and the first reference signal are quasi co-located QCLs, channel large-scale information of the reference signal can be obtained from large-scale information of the first reference signal, and the channel large-scale information includes at least one of the following information: delay spread, doppler shift, mean delay, ZOD (vertical angle of departure), AOD (horizontal angle of departure), ZOA (vertical angle of arrival), AOA (horizontal angle of arrival).
The second resource unit includes at least one of: a control channel resource group REG, a control channel element CCE, a candidate control channel, a search space under a polymerization degree of the control channel, a private search space of the second communication node, all search spaces (including the private search space and a public search space) of the second communication node, a subband where the control channel is located, a bandwidth corresponding to the second communication node, and a frequency domain width occupied by the signal.
Fig. 18 is a first schematic diagram of a control channel region according to an embodiment of the present invention, as shown in fig. 18, the control channel region is a subset of QCL resource units (where the QCL resource units are resource units of the first reference signal), and at this time, channel large-scale information of demodulation reference signals of the control channel region can be obtained through large-scale information of the first reference signal in the QCL resource units.
When the signal and the first reference signal satisfy at least one of the following characteristics: the set of ports of the first reference signal is a subset of a set of demodulation reference signal ports of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the port set of the first reference signal is empty of an intersection of the port sets of demodulation reference signals of the signals.
Wherein the control channel region may include at least one of: one REG, one CCE, one candidate control channel, one search space, a dedicated search space, all search spaces in the current time unit, and within a first bandwidth, wherein the first bandwidth is a bandwidth in which control information of the first communication node can jump to occupy resources, and the jump can be a jump in the current time unit or a jump in a different time unit, that is, the terminal assumes that its control channel is transmitted only within the bandwidth and is not transmitted outside the bandwidth.
Specific example 5
The embodiment provides a control channel and a demodulation reference signal sending method, wherein the control channel sent by a base station (namely, the first communication node) to a terminal (namely, the second communication node) meets the following characteristics that the control channel areas where the control channels are located are different and the transmission modes are different; the control channel areas where the control channels are located are different, the determination modes of the demodulation reference signals of the control channels are different, and/or the detection methods of the control channels are different.
For example, when the control channel is transmitted in the first control channel region, a single-user multiple-input multiple-output (SU-MIMO) mode is adopted;
and when the control channel is transmitted in the second control channel region, the SU-MIMO and MU-MIMO mixed mode is adopted for transmission. The mixed transmission mode of SU-MIMO and MU-MIMO indicates that the area is in SU-MIMO mode in some time units, and the area is in MU-MIMO transmission mode in some time units, the SU-MIMO/MU-MIMO mode base station dynamically schedules according to scheduling requirements, or currently in SU-MIMO transmission mode on some time-frequency resources in the area, and some time-frequency resources are in MU-MIMO transmission mode. When the control channel is transmitted in a first control channel region, the number of control channel demodulation reference signal ports is M, and the demodulation reference signal ports are determined according to M; when the control channel is transmitted in the second channel region, the number of control channel demodulation reference signal ports is M1, and the demodulation reference signal ports are a subset of the second reference signal port set. The control channel demodulation reference signal port set is obtained according to at least one or more of the following information: sending resource information corresponding to the terminal; the time parameter corresponding to the control channel, the number M1 of port sets of the demodulation reference signal, the time parameter corresponding to the second control channel region, a frequency domain resource index (such as a PRB index) where the control channel is located, and the identification information C-RNTI of the terminal; control channel resources corresponding to the second control channel region (preferably, different control channel resources may correspond to different time-frequency resources, or to different space-domain resources, such as a transmit beam, and/or a receive beam); and the control channel resources correspond to the control channels. The transmission resource is a transmission resource used by the base station in a communication link (i.e., a downlink communication link) transmitted by the base station and received by the terminal, and the transmission resource includes one or more of the following resource types: a transmit beam resource, a transmit port resource, a transmit precoding matrix resource, a transmit time resource, a transmit frequency domain resource, a transmit sequence resource. The transmission resource is a resource employed by the first communication node to transmit a signal.
In a first implementation manner of this embodiment, fig. 19 is a second schematic diagram of a control channel region according to an embodiment of the present invention, as shown in fig. 19, a control domain in a time unit is divided into two regions, a first control channel region and a second control channel region, where control information is in a SU-MIMO transmission mode when transmitted in the first control channel region, that is, only one piece of control information is transmitted on the same time-frequency resource. The control channel demodulation reference signal ports are fixed, for example, 1 demodulation reference signal port, and the demodulation reference signal port is port 1. When the terminal detects the control channel in the first control region, it detects the control channel only on demodulation reference port 1. The terminal assumes that the base station will not send control channels to other terminals through other demodulation reference signal ports on the time-frequency resources occupied by the control channel, or at most, the base station sends control channels to other terminals through the same demodulation reference signal ports in a space division manner. The control channel transmission in the second control channel region is in a SU-MIMO/MU-MIMO hybrid transmission mode, that is, at this time, control information can be sent to multiple terminals in a space division manner on the same time-frequency resource in the second control channel region, and different terminals occupy different control channel demodulation reference signal ports. Preferably the different control channel demodulation reference signal ports are multiplexed by code division. Certainly, any one or more of time division/frequency division can be used, but if the demodulation reference signal port is subjected to time division/frequency division, because the total number of layers of the control channel MU-MIMO transmitted by the base station is dynamically changed in different time units, the problem of rate matching of the control channel needs to be considered. The other solution is that resources occupied by the demodulation reference signal port of the control channel are reserved, and control information is not transmitted, so that the transmission of SU-MIMO and MU-MIMO is transparent to the terminal, but the resource utilization rate is not very high at the moment. The control channel demodulation reference signal of the terminal in the region can be obtained according to the corresponding sending resource of the terminal. The transmission resource corresponding to the terminal is previously agreed by the base station and the terminal, and the terminal obtains the corresponding transmission resource through processes such as beam training or beam tracking. The transmission resources correspond to the control channel demodulation reference signals one to one. The one-to-one correspondence between the transmission resources and the control channel demodulation reference signals is predetermined by both the transmitter and the receiver. For example, the transmission resource i corresponds to the control channel demodulation reference signal port i, and the total number of the transmission resources is the same as the number of the control channel demodulation reference signal ports. Fig. 20 is a first schematic diagram of downlink transmission according to an embodiment of the present invention, and as shown in fig. 20, in the downlink transmission, a base station has 12 total transmission resources (for example, 12 transmission beams), and corresponds to control channel demodulation reference signal ports 1 to 12. The terminal confirms that the transmission resource corresponding to the control channel is transmission resource 1 through a previous beam training process or a beam tracking process, or the base station configures the transmission resource corresponding to the current terminal detection control channel as transmission resource 1 (that is, the terminal detects the control channel under the transmission beam of the base station corresponding to the transmission resource 1 at this time), when the terminal detects the control channel in the second control channel region, the terminal first detects the control channel on the demodulation reference signal port 1 corresponding to the transmission resource 1 and detects the demodulation reference signal ports corresponding to other transmission resources, that is, the terminal also detects the demodulation reference signal ports 2 to 12 of the control channel, so as to perform operations such as interference estimation and elimination of the control channel MU.
In fig. 19, the frequency division manner of the first control channel region and the second control channel region is merely an example and does not exclude other frequency division manners. This embodiment also does not exclude that the first control channel region and the second control channel region are in a time division and/or frequency division manner, for example, a manner similar to ECCE in LTE or CCE is adopted to divide a control domain of a time unit into a plurality of control channel resources, where the first control channel region includes a first control channel resource set, and the second control channel region includes a second control channel resource set. In fig. 19, the first control channel region and the second control channel region occupy the entire system bandwidth, but this embodiment does not exclude that the first control channel region and the second control channel region occupy only a part of the system bandwidth. The first control channel region and the second control channel region are transmitted before the corresponding transmission domains in fig. 19.
Fig. 19 shows that the first control channel region and the second control channel region are in the same time unit, which does not exclude that the first control channel region and the second control channel region are in different time units in this embodiment, fig. 21 is a third schematic diagram of the control channel region according to the embodiment of the present invention, and as shown in fig. 21, each time unit obtains one of the first control channel region and the second control channel region according to the time parameter corresponding to the time unit. Or the time unit in which the first control channel region and the second control channel region are located is predetermined before both the transmitter and the receiver, for example, by high layer signaling, or by common control information, or by previous dynamic signaling.
In a second implementation manner of this embodiment, similar to the first implementation manner, the difference is that the transmission resources and the demodulation reference signal port sets in the second control channel region correspond to each other. For example, each transmission resource corresponds to a demodulation reference port set, and the demodulation reference signal port set at least includes one reference signal port. In this case, one way is that the intersection of different sets of demodulation reference signal ports is empty, and the other way is that the intersection of different sets of reference signal ports is not empty. And the number of reference signal ports contained in different reference signal port sets may be the same or different, and at this time, the terminal detects MU interference on ports in demodulation reference signal port sets corresponding to other transmission resources while performing control channel detection on the demodulation reference signal port corresponding to the transmission resource i, and performs operations such as MU interference cancellation on the control channel. Similarly, as shown in fig. 20, the terminal obtains its corresponding transmission resource as transmission resource 1 through previous beam training or other processes, where the transmission resource 1 corresponds to demodulation reference signal port set 1, and the demodulation reference signal port set 1 includes ports 1 and 2, at this time, the terminal detects its control channel on ports 1 and 2, detects demodulation reference signal ports corresponding to other transmission resources, and performs operations such as MU interference cancellation on the control channel.
In a third implementation manner of this embodiment, similar to the first implementation manner, the difference is that a plurality of transmission resources in the second control channel region correspond to one reference signal port. For example, the demodulation reference signal port corresponding to the transmission resource i is obtained by taking the remainder of i to _ Num _ Max, where the reference signal _ Num _ Max represents the maximum number of reference signal ports in the second control channel region, specifically as shown in fig. 20, the base station has 12 transmission resources in total, and the reference signal _ Num _ Max =3, at this time, the transmission resource {1,4,7,10} corresponds to port 1, the transmission resource {2,5,8,11} corresponds to port 2, the transmission resource {3,6,9,12} corresponds to port 3, or the reference signal port corresponding to the transmission resource i is set as i
At this time, the transmission resource {1,2,3} corresponds to the demodulation reference signal port 1, the transmission resource {4,5,6} corresponds to the demodulation reference signal port 2, the transmission resource {7,8,9} corresponds to the demodulation reference signal port 3, and the transmission resource {10,11,12} corresponds to the demodulation reference signal port 4. Note that the transmission resource number starts from 0 in the operation at this time. Of course, this embodiment does not excludeHis correspondence between transmission resources and reference signal ports.
In the first to third embodiments, if the terminal agrees with the base station for more than one corresponding transmission resource through beam training or other processes, in this case, one way is that the terminal detects the control channel only on the demodulation reference signal corresponding to the optimal transmission resource, and in another way, the terminal may detect the control channel on a plurality of demodulation reference signal terminals corresponding to a plurality of transmission resources.
In a fourth implementation manner of this embodiment, similar to the first implementation manner, the difference is that in the second control channel region, the demodulation reference signal of the terminal is no longer obtained according to the transmission resource corresponding to the terminal, but the terminal performs blind detection in a first demodulation reference signal port set, and when the reception performance of a port in the first demodulation reference signal port set exceeds a certain threshold, the demodulation reference signal port detects and controls the modulation channel. In this case, the blind detection complexity of the terminal is increased, but greater flexibility is provided for MU-MIMO pairing of the control channel, and a certain flexibility can be achieved for the control channel transmission beam transmitted by the base station, because the demodulation reference signal and the transmission beam are not associated at this time.
In a fifth implementation manner of this embodiment, similar to the fourth implementation manner, the difference is that at this time, the sending end and the receiving end further define a value of M1, for example, the terminal blindly detects the reception performance of each reference signal port in the third reference signal port set, selects at most M1 reference signal ports with the optimal reception performance, and jointly demodulates the control channel.
In a sixth implementation manner of this embodiment, similar to the first implementation manner, the difference is that the demodulation reference signal of the second control channel region obtains the demodulation reference signal port according to the identification number C-RNTI of the terminal, the minimum index (or the maximum index) of the time domain resource corresponding to the control channel of the terminal, and/or the minimum index (or the maximum index) of the frequency domain resource corresponding to the control channel of the terminal, and/or according to the minimum CCE (or the maximum CCE index) corresponding to the control channel of the terminal, so that it can be avoided that the reference signal ports of two users on the same time-frequency resource are always the same, and thus, the two users can perform MU-MIMO transmission. Meanwhile, the demodulation reference signal and the transmission resource in the beam training phase have no incidence relation, so that the transmission resource (such as a transmission beam) of the control channel can be more flexible.
In the second implementation manner of this embodiment, when the control channel is in the first control channel region, the port number M of the control channel demodulation reference signal is fixed, and the demodulation reference signal is obtained according to M, for this problem, when the control channel is in the first control channel region, there is a corresponding relationship between the port number of the control channel demodulation reference signal and the total number LB of the transmission resources corresponding to the terminal. And the corresponding relation is appointed with the terminal before. Fig. 22 is a schematic diagram of downlink transmission according to an embodiment of the present invention, where as shown in fig. 22, if the terminal can receive the transmit beam {1,3,4}, that is, LB =3, under the same receive beam obtained in the beam training phase, the reference signal port number M =3 of the first control channel region of the terminal at this time corresponds to the port {1,2,3}, or fig. 23 is a schematic diagram of downlink transmission according to an embodiment of the present invention, as shown in fig. 23, if the terminal can receive the transmit beam {1,3,6,7,8}, that is, LB =5, under the same receive beam obtained in the beam training phase, the reference signal port number M =5 of the first control channel region of the terminal at this time corresponds to the ports { 1-5 }, where the correspondence between LB and M is merely an example, and does not exclude other correspondence types. In a third implementation manner of this embodiment, when the control channel is in the first control channel region, the port number of the control channel demodulation reference signal is obtained together with the total number LB of the transmission resources corresponding to the terminal, and the maximum value of the transmission resources corresponding to the terminal and M. As shown in fig. 23, if the terminal can receive the transmit beam {1,3,6,7,8} under the same receive beam obtained in the beam training phase, i.e., LB =5, it is assumed that the maximum value of M is 4, thereby obtaining M =4, corresponding to ports 1-4.
In an optional implementation manner of this embodiment, the first control channel region and the second control channel region are both dedicated search channel regions, the terminal first determines a region where its control channel is located, for example, obtains a dedicated search space according to a rule stipulated before the base station, determines, for each candidate control channel in the dedicated search space, whether the region where it is located is the first control channel region or the second control channel region, and demodulates the control channel and the control channel demodulation reference signal by using different detection methods for different control channel regions.
In a second control channel region of SU-MIMO/MU-MIMO transmission, the terminal assumes that one or more other control information may occupy a port in a third set of reference signal ports, which is the difference between the second set of reference signal ports and the set of control channel demodulation reference signal ports.
Specific example 6
In this embodiment, the first resource unit includes K second resource units, and this embodiment describes a method for acquiring the K value. The method for acquiring the K value can comprise at least one of the following five methods:
The first method is that the first communication node notifies the K value to the second communication node, which may be dynamic signaling or higher layer signaling, such as RRC signaling or MAC CE signaling;
the second method is to determine the K value according to the system bandwidth, for example, the first resource unit is a PRG unit;
the third method is to determine the K value according to bandwidth information corresponding to the second communication node, for example, the bandwidth is the bandwidth where the PDCCH of the second communication node is notified, that is, the PDCCH of the second communication node can only hop within the bandwidth within a current period of time, and cannot exceed the bandwidth, and at least the PDCCH preferentially detected by the second communication node cannot exceed the bandwidth;
a fourth method is to determine the K value according to a resource mapping manner of the signal, for example, the first resource unit is a PRG unit, when physical resources occupied by the control channel are continuous PRBs, that is, mapping of NR-CCE or NR-REG to PRB is local, the K value may be larger, and when physical resources occupied by the control channel are discrete PRBs, that is, mapping of NR-CCE or NR-REG to PRB is distributed (distubute), the K value may be smaller.
The fifth method is to determine the K value according to the number of the transmission resources fed back by the second communication node, for example, the more the transmission resources fed back by the terminal to the base station are, the more the transmission resources correspond to the transmission beams, the more the transmission resources are, the base station can use the more transmission beams to transmit the control channel to the terminal, so that the more the number of the transmission beams fed back by the terminal is, the smaller the PRG can be.
The transmission resource is a transmission beam of the base station in a downlink communication link transmitted by the base station and received by the terminal, wherein different transmission beams can be distinguished by at least one of the following resource types: transmitting a beam resource, transmitting a reference signal port resource, transmitting a precoding matrix resource, transmitting a time resource, transmitting a frequency domain resource, and transmitting a sequence resource. The transmission resource is a resource used by the base station to transmit a signal. The transmission port is a port for a reference signal.
In another optional embodiment of this embodiment, the K value may be determined according to the number of time-frequency resources that can be used for control channel transmission in the second resource unit, for example, the second resource unit is a CCE, and the time-frequency resources that can be used for a control channel in one CCE are 8 or 16 (in the case of 8, some time-frequency resources in this CCE are occupied by a reference signal or a broadcast channel or a synchronization signal), when the number of time-frequency resources is 8, the first resource unit is 2 times that of the second resource unit, and when the number of time-frequency resources is 16, the first resource unit is 1 time that of the second resource unit, which may be other cases.
Specific example 7
And the base station sends a control channel and/or a demodulation reference signal to the terminal, wherein a first resource unit related to the demodulation reference signal is K times of a second resource unit, and K is a natural number. Wherein the first resource unit is a PRG resource unit, and the second resource unit is at least one of the following resource units: a control channel resource group REG, a control channel element CCE, a candidate control channel, a search space of the control channel under one aggregation level, a dedicated search space of the second communication node, all search spaces (including the dedicated search space and the common search space) of the second communication node, a subband where the control channel is located, a bandwidth corresponding to the second communication node, a frequency domain width occupied by the signal, and one PRB.
When the mapping of the control channel to the physical resource is continuous, the number K of the second resource units included in the PRG may be larger, and when the mapping of the control channel to the physical resource is discrete, the number K of the second resource units included in the PRG may be smaller.
On the other hand, when the mapping of the control channel to the physical resource is continuous, the second resource unit type included in the PRG is higher in level, and when the mapping of the control channel to the physical resource is discrete, the second resource unit type included in the PRG is lower in level.
The REG, CCE, a candidate control channel, a search space, a dedicated search space, all search spaces, a subband where the control channel is located, a bandwidth corresponding to the second communication node, and a level of a unit type of a frequency domain width occupied by the signal are sequentially increased. Or the larger the frequency domain resource and/or the time domain resource corresponding to the second resource unit type is, the higher the level of the second resource unit type is.
Specific example 8
In this embodiment, a detailed description is given of the first resource unit being K times as large as the second resource unit in the above embodiment, where K is a natural number.
In a first implementation manner, the number of time-frequency resources included in the first resource unit is K times the number of time-frequency resources included in the second resource unit. I.e. the first resource unit comprises K second resource units.
In the second embodiment, the number of resources occupied by the first resource unit in the frequency domain is only K times that of the frequency domain resources occupied by the second resource unit, or the length of the first resource unit in the frequency domain is only K times that of the frequency domain resources occupied by the second resource unit, and the number of time domain resources of the first resource unit and the number of time domain resources of the second resource unit may be different.
In a third embodiment, the number of time domain resources occupied by the first resource unit is only K times that of the time domain resources occupied by the second resource unit, or the time domain length of the first resource unit is only K times that of the time domain resources occupied by the second resource unit, and the number of frequency domain resources of the first resource unit and the number of frequency domain resources of the second resource unit may be different.
Specific example 9
In this embodiment, a detailed discussion is given of the relationship among the PRG (i.e. the precoding resource block group, or the precoding granularity unit) of a signal, the minimum transmission unit of the signal, the resource unit of the quasi-common reference signal of the signal, and the minimum resource unit for determining the signal transmission pattern.
In a first aspect, the PRG of the signal, the minimum transmission unit of the signal, the resource unit of the quasi-common reference signal of the signal, and the minimum resource unit of the specific signal transmission pattern are the same unit;
in a second aspect, the PRG of the signal, the minimum transmission unit of the signal, the resource unit of the quasi-common reference signal of the signal, and the minimum resource unit of the specific signal transmission pattern are such that the minimum resource unit is the PRG and the other resource units are integer multiples of the PRG.
In a third aspect, the PRG of the signal, the minimum transmission unit of the signal, the resource unit of the quasi-common reference signal of the signal, and the minimum resource unit of the deterministic signal transmission pattern are each set to a minimum, and the other resources are integer multiples of the minimum resource unit of the deterministic signal transmission pattern.
Detailed description of example 10
The first resource unit is discussed in further detail below as being K times larger than the second resource unit.
In this embodiment, the first resource unit of the signal is K times of the second resource unit, where the second resource unit is a resource occupied by the signal, for example, the signal is a control channel, the first resource unit is the minimum resource unit for determining a reference signal, the control channel occupies one PPB, the demodulation reference signal thereof obtains a demodulation reference signal pattern from one PRB, the control channel occupies 2 PRBs, and the demodulation reference signal thereof obtains a demodulation reference signal pattern from 2 PRBs. As shown in fig. 24.
In this embodiment, the first resource unit is K times as large as the second resource unit, and K is a natural number. The first communication node notifying the second communication node of the second resource unit type, wherein the second resource unit type comprises: the resource allocation method comprises the following steps of a control channel resource group REG, a control channel unit CCE, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of a second communication node, all search spaces of the second communication node, a subband where the control channel is located, a bandwidth corresponding to the second communication node, a frequency domain width occupied by a signal and a PRB.
Specific example 11
The details of the control domain sub-bands are discussed below.
In this embodiment, the control domain subband is determined according to at least one of the following information: time domain information, the C-RNTI of the second communication node, bandwidth information corresponding to the second communication node (such as a terminal), and frequency domain information where the MIB/SIB is located.
The control domain sub-band is a sub-band where a control channel of the terminal is located, and the frequency domain length is equal to or less than a bandwidth in which a data signal of the terminal can be transmitted.
The bandwidth information corresponding to the second communication node is at least one of the following bandwidths: a system bandwidth of the second communication node; a bandwidth in which a control domain of the second communication is located; bandwidth information where the proprietary control information of the second communication node is located.
The control domain subband may also be referred to as a control resource set, and one piece of control information is located in one control domain subband.
Now, in the discussion of NR, when a bandwidth is relatively large, a terminal detects a control channel based on a full bandwidth, and the power consumption of the control channel is relatively large, it is claimed that the control channel is placed in a narrow band, so as to reduce the power consumption of the terminal, for example, the control channel of the terminal is placed in a control domain sub-band, if the control domain sub-band allocated to a terminal is fixed or configured in a high layer, a flexible scheduling user combination cannot be well implemented at this time, for example, the control domain sub-band 1 is shared by users 1 to 10, and the sub-band 2 is shared by users 11 to 20, then each sub-band needs to be reserved by the maximum number of users at this time (for example, the sub-band 1 can allow users 1 to 10 to schedule at the same time, otherwise, a limitation is caused to scheduling), while the radio frequency power consumption of the terminal is increased, for example, the sub-band 1 needs to schedule users 11, and the sub-band 1 is saturated, and the resources of the sub-band 2 cannot be used to schedule users 1 to 10.
Fig. 25 is a schematic diagram of a control domain subband according to an embodiment of the present invention, as shown in fig. 25, the control domain subband of a user is subjected to hopping with time, for example, hopping once every L time units, where L is a natural number, so that a collided user can not collide any more after a period of L time units, and in fig. 25, it is assumed that the control domain subband and the data domain subband are the same, that is, in the time units, the control domain subband and the data domain subband are the same, which is not excluded from this embodiment, that is, in the same time unit, the control domain subband and the data domain subband are different in length or different in position, as shown in fig. 26, and fig. 26 is a schematic diagram of a control domain subband according to an embodiment of the present invention. The data domain sub-band is a sub-band where data of the data terminal can be scheduled, and the scheduling data of the terminal occupies part or all of the frequency domain range of the data domain.
Preferably, at this time, the hopping of the sub-band is not hopping in the full system bandwidth, but hopping in a limited set of sub-bands in the system bandwidth, where the sub-band sets have the same sub-carrier spacing, or have the same maximum time domain symbol number occupied by the control domain, or hop in a signaling configured set of sub-bands.
After the terminal initially accesses, the control domain subband for receiving the control channel may be obtained according to the subband of the Broadcast channel (e.g., PBCH (Physical Broadcast channel), NR-PBCH (Next Radio Broadcast channel)). For example, the control domain sub-band is a sub-band where the broadcast channel is located, or the frequency domain resource set occupied by the control domain sub-band is a subset of the frequency domain resource set occupied by the sub-band where the broadcast channel is located.
Detailed description of example 12
The following describes the acquisition of the control channel demodulation reference signal in the MU-MIMO transmission mode in detail.
In this embodiment, the control channel demodulation reference signals are a subset of the second set of reference signals. The control channel demodulation reference signal is obtained according to at least one of the following information: sending resource information corresponding to the second communication node (such as a terminal); the time parameter corresponding to the control channel, the number M1 of port sets of the demodulation reference signal, the type of the control channel region where the control channel is located, the time parameter corresponding to the control channel region where the control channel is located, the frequency domain resource index corresponding to the control channel, and the control channel element (similar CCE) index corresponding to the control channel. A control channel resource group (similar REG) index corresponding to the control channel, wherein the different control channel regions include: the first communication node assumes that it is a SU-MIMO transmission mode in the first control region; the first communication node assumes a mixed transmission mode of SU-MIMO and MU-MIMO in the first control region.
Wherein the transmission resource is in a communication link transmitted by the first communication node (such as a base station) and received by the second communication node, and the transmission resource of the first communication node includes one or more of the following resource types: the method comprises the steps of sending beam resources, sending port resources, sending precoding matrix resources, sending time resources, sending frequency domain resources and sending sequence resources. The transmission resource is a resource employed by the first communication node to transmit signals. Optionally, the different transmission resources correspond to different transmission beams of the base station.
For example, the control channel needs to support MU-MIMO transmission mode, and then the MU-MIMO user can obtain the demodulation reference signal port as above.
Optionally, the ports of the base station where the terminal detects the control channel where the transmission beam resources of the base station may be used for demodulating the reference signal are different, so that the demodulation reference signal ports of the users under different transmission beams may be different, and certainly when the number of the transmission beams is much greater than the number of the ports, part of the transmission resources need to share the demodulation reference signal ports.
The demodulation reference signal port of the control channel of the same terminal may vary with time, i.e., the demodulation reference signal port of the control channel may be determined according to the time parameter.
The type of the control channel region where the control channel is located, wherein the different control channel regions include: the SU-MIMO control channel transmission region and the SU-MIMO/MU-MIMO transmission mode are different from each other in the acquisition method of the control channel demodulation reference signal in the different control channel regions, as described above for the MU = MIMO transmission mode transmission control channel.
Preferably, the first control channel region and the second control channel region control channel demodulation reference signals satisfy at least one of the following characteristics: in a first control channel region (such as a SU-MIMO transmission region) the demodulation reference signals of its control channel are a proper subset of the second set of reference signal ports, and in a second control channel region (such as a SU-MIMO/MU-MIMO transmission region) the demodulation reference signals of its control channel are a proper subset of the second set of reference signal ports. The demodulation reference signal of the control channel of the first control region is fixed and does not change along with time; the demodulation reference signal of the control channel of the second control region is time-varying; the demodulation reference signal set of the control channel in the first control region is determined according to the number of ports included in the demodulation reference signal set of the control channel, and the demodulation reference signal set of the control channel in the second control region can only be determined according to the number of ports included in the demodulation reference signal set of the control channel and other information. In the first control channel region, the second communication node does not have other control channels to occupy the time-frequency resources occupied by the control information, and in the second control channel region, the second communication node assumes that other control channels occupy the time-frequency resources occupied by the control information.
The demodulation reference signal ports of the control channels in different control regions are the same in number, or the demodulation reference signal port set of the control channel in one control channel region is a subset of the demodulation reference signal port set of the control channel in another control region. Or the different control channel regions include: a dedicated control channel region and a common control channel region.
The frequency domain resources of the control channels of the same terminal are different, and the demodulation reference signal ports of the control channels are different. Fig. 27 is a schematic diagram of frequency domain resources corresponding to port sets of demodulation reference signals according to an embodiment of the present invention, and as shown in fig. 27, port sets of demodulation reference signals in different frequency domain resources are different. Different frequency domain resources in fig. 27 transmit Different Control Information (DCI) of one terminal or transmit one control information, where one frequency domain resource includes consecutive one or more PRBs.
Fig. 28 is a schematic diagram of correspondence between control channel elements CCE and port sets of demodulation reference signals according to an embodiment of the present invention, and as shown in fig. 28, control channel elements CCE where control channels of the same terminal are located are different, and control channel demodulation reference signal ports thereof may be different.
The control channel of the same terminal is located in different control domain sub-bands (or control channel resource groups), and the control channel demodulation reference signal ports are different.
Of course, in fig. 27 to 28, there is no intersection between port sets of different frequency domain resources (or different control channel units), and this embodiment does not exclude that the intersection between port sets is not empty.
Optionally, the set of demodulation reference signal ports of the control channel is variable in different time units; optionally, the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources; optionally, the terminal assumes that one or more other control information may occupy a port in a third set of reference signal ports, the third set of reference signal ports being a difference set between the second set of reference signal ports and the set of control channel demodulation reference signal ports.
Determining the second set of reference signal ports by at least one of: the second set of reference signal ports is fixed; the second reference signal port set is obtained according to signaling information sent by the first communication node; a set of demodulation reference signals according to a broadcast channel; and obtaining a beam training reference signal port set.
Optionally, the different control regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel region time domains overlap; different control channel regions are multiplexed by time division, frequency division and/or code division; the different control channel regions and the union fill the system bandwidth.
Optionally, at least one of the following features is satisfied for the different control regions: the intersection of the different control channel regions is empty; different control channel regions belong to different time units; and obtaining a control channel region contained in the time unit according to the time parameter information of the time unit.
Optionally, the base station sends configuration information to the terminal, where the configuration information indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located. The configuration information may be sent in one or more of the following ways: broadcast message sending, high-level signaling sending, dynamic signaling sending, and rules agreed by the second communication node.
Specific example 13
The control channel demodulation reference signal port number is explained in detail below.
In this example, a determination method of the number of control channel demodulation reference signal ports is exemplified. And the number of ports for controlling the channel demodulation reference signals and the total number LB of the sending resources corresponding to the terminal have a corresponding relation. The correspondence is agreed with the terminal before, or for example, according to the report of the terminal and/or according to the notification of the base station. As shown in fig. 22, if the terminal can receive the transmission beam {1,3,4} under the same reception beam obtained in the beam training phase, i.e. LB =3, the demodulation reference signal port number M =3 of the terminal corresponds to the port {1,2,3}, or as shown in fig. 23, if the terminal can receive the transmission beam {1,3,6,7,8} under the same reception beam obtained in the beam training phase, i.e. LB =5, the reference signal port number M =5 of the first control channel region of the terminal corresponds to the ports { 1-5 }, at this time, LB and M are in equal correspondence, and other correspondence types are not excluded.
Or the port number of the control channel demodulation reference signal, the total number LB of the sending resources corresponding to the terminal, the sending resources corresponding to the terminal and the maximum value M _ Max of M are jointly obtained. As shown in fig. 23, if the terminal can receive the transmit beam {1,3,6,7,8} under the same receive beam obtained in the beam training phase, i.e. LB =5, assuming that M _ Max is 4, thereby obtaining the number of ports M =4 of the control channel demodulation reference signal, corresponding to the demodulation reference signal ports 1-4.
Detailed description of example 14
The following describes the acquisition of the control channel demodulation reference signal port in detail.
In this embodiment, a method for detecting a control channel is provided, which is mainly used to support MU-MIMO transmission of the control channel.
In a first implementation manner, a terminal detects a reference signal in a second reference signal port set, and selects one or more reference signal ports in a third reference signal port set to form a demodulation reference signal port set of the control channel according to the reception performance of the reference signal.
In a second embodiment, a terminal detects a control channel on each reference signal port of a second reference signal port set, and a reference signal set with successful detection forms a demodulation reference signal of the control channel;
optionally, the terminal may assume that the demodulation reference signal port set of the control channel includes at most M2 reference signals, that is, the terminal assumes that the base station transmits the control information by using at most M2 demodulation reference signal ports, or the base station transmits the control information by using at most M2 demodulation reference signal ports on the same time-frequency resource.
Optionally, the terminal assumes that the base station transmits the control information to the base station by using M2 demodulation reference signals, or the base station transmits the control information to the base station by using M2 demodulation reference signal ports on the same time-frequency resource.
Specific example 15
The following describes in detail how to transmit the control channel demodulation reference signal in different control channel regions.
The second communication node assumes that a demodulation reference signal of a first control channel region is sent when control information of the second communication node needs to be sent in the first control channel region. The second communication node assumes that the demodulation reference signal of the second control channel region is fixedly transmitted in an appointed time unit even though the second control channel region does not transmit any control information in the appointed time unit. The demodulation reference signal of the second control channel region is transmitted only when there is control information to be transmitted in a time unit other than the appointed time unit.
Optionally, the second communication node assumes that a minimum unit for reference signal transmission of the first control area is different from a minimum unit for reference signal transmission of the second control area. The minimum transmission unit satisfies at least one of the following characteristics: the minimum sending unit is a PRG resource unit corresponding to the reference signal; if the reference signal is transmitted, the transmitted minimum resource unit is the minimum transmission unit; the minimum sending unit is a minimum resource unit of the reference signal capable of performing time-frequency interpolation; channel estimates from the same reference signal port in the same time unit cannot be interpolated in different minimum units.
The minimum unit for sending the reference signals of the different control areas of the terminal meets at least one of the following characteristics: the resource occupied by the candidate control channel in the second communication node search space in the first control channel area is the minimum sending unit; the resource occupied by a search space with the same polymerization degree of the second communication node in the first control channel region is the minimum sending unit; the resource occupied by all the search spaces of all the polymerization degrees of the second communication node in the first control channel region is the minimum sending unit; the minimum unit for reference signal transmission in the second control channel region is the second control channel region; the smallest unit of reference signal transmission in the second control channel region is the entire system bandwidth.
EXAMPLE 16
The QCL information is described in detail below for different control channel regions.
The second communication node assumes that the QCL information of the same reference signal port of different control areas is the same in a predetermined time unit, and the QCL information of the same reference signal port of different control areas is different in a time unit other than the appointed time unit.
Specific embodiment 17 in this embodiment, downlink Control Information (DCI) or a downlink control channel may be frequency division multiplexed with a sounding reference signal, where a first resource unit of the sounding reference signal is K times of a second resource unit, where the first resource unit is a minimum transmission unit of the sounding reference signal, and the second resource unit includes at least one of the following resource unit types: a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by the signal, a physical resource block PRB
Detailed description of example 18
In this embodiment, the data channel and the control channel may be frequency division multiplexed, where the first resource unit of the data channel is K times the second resource unit.
Wherein the first resource unit is at least one of the following units of a data channel: a minimum transmission unit of the data channel (or a minimum allocation resource unit of the data channel, or a minimum allocation resource unit of the data channel in a control domain); a PRG unit of the data channel; a minimum unit determined by a demodulation reference signal pattern of the data channel; a minimum transmission unit of the demodulation reference signal of the data channel (or a minimum transmission unit of the demodulation reference signal of the data channel in the control domain).
The second resource unit comprises at least one of the following resource unit types: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Specific example 19
In the present embodiment, one PRG unit includes a plurality of time units. Fig. 29 is a schematic diagram of a PRG unit according to an embodiment of the present invention, and as shown in fig. 29, in the nth time unit and the (n + 1) th time unit, precoding of resources occupied by the same user in the same communication direction (where the direction includes downlink and uplink) is the same, or precoding of resources in the same frequency domain occupied by the same user in the same communication direction is the same.
In fig. 29, the n-th time unit and the n + 1-th time unit are shown, and the precoding between the resources in the same communication direction in different time units of the user 1 is the same, but this embodiment does not exclude other time units, such as multiple time units, and the multiple time units may be discontinuous in time.
The embodiments of the present invention are only for downlink control channels or downlink reference signals, and the present invention does not exclude that the technology is similarly used in uplink control channels or uplink reference signals.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Example 2
In this embodiment, a signal receiving apparatus, a signal transmitting apparatus, a control channel receiving apparatus, and a control channel transmitting apparatus are further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and the description of the apparatus is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 30 is a block diagram of a signal receiving apparatus according to an embodiment of the present invention, as shown in fig. 30, the apparatus including:
a first receiving module 302, configured to receive a signal sent by a first communication node, where a first resource unit of the signal is K times of a second resource unit, and K is a natural number;
wherein the first resource unit is used for determining the transmission parameter of the signal, and the second resource unit comprises at least one of the following: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, the first resource unit includes at least one of: the method comprises the steps of precoding resource block groups of signals, minimum sending units of the signals, resource units of first reference signals corresponding to the signals, and minimum resource units for determining signal sending patterns.
Optionally, after receiving the signal sent by the first communication node, the method further includes: and acquiring a channel estimation value of the signal according to the relevant transmission parameter of the signal.
Optionally, the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the port set of the first reference signal is a subset of a port set of a demodulation reference signal of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the first resource unit of the signal is determined according to at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the K times the first resource unit of the signal to the second resource unit includes at least one of the following features: the frequency domain resource of the first resource unit is K times that of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
Optionally, in a case that the signal is a demodulation reference signal and/or a measurement reference signal, determining a minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by signals, frequency domain resources occupied by signals, and code domain resources occupied by signals.
Optionally, the first receiving module is further configured to receive relevant information of the first resource unit notified by the first communication node, and obtain relevant information of the second resource unit according to the relevant information of the first resource unit; and receiving the related information of the second resource unit notified by the first communication node, and obtaining the related information of the first resource unit according to the related information of the second resource unit.
Optionally, the time domain/frequency domain/code domain resource occupied by the second resource unit is determined according to at least one of the following information: the time domain parameters, the identification information of the second communication node, the bandwidth information corresponding to the second communication node, and the frequency domain information of the broadcast channel.
Optionally, the frequency domain/code domain resource occupied by the first resource unit is determined according to the time domain information.
Optionally, determining the K value according to at least one of the following ways further comprises: receiving a K value notified by a first communication node; determining a K value according to the system bandwidth; determining a K value according to the bandwidth information corresponding to the second communication node; determining a K value according to a resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node.
Optionally, the first receiving module is further configured to receive a type of the second resource unit notified by the first communication node, where the type of the second resource unit includes: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Fig. 31 is a block diagram of a configuration of a signal transmission apparatus according to an embodiment of the present invention, as shown in fig. 31, the apparatus including:
a second sending module 312, configured to send a signal to a second communication node, where a first resource unit of the signal is K times of a second resource unit, and K is a natural number;
wherein the first resource unit is configured to determine a transmission parameter of the signal, and the second resource unit includes at least one of: the method comprises the steps of controlling a channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of the second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource of the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, the first resource unit includes at least one of: the method comprises the steps of pre-coding resource block groups of signals, minimum sending units of the signals, resource units of first reference signals corresponding to the signals, and minimum resource units of signal sending patterns.
Optionally, the sending the signal to the second communication node comprises: and sending the signal to the second communication node according to the relevant transmission parameter of the signal.
Optionally, the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the port set of the first reference signal is a subset of a port set of a demodulation reference signal of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the first resource unit of the signal is determined according to at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the first resource unit of the signal is K times the second resource unit and includes at least one of the following features: the frequency domain resource of the first resource unit is K times that of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
Optionally, in a case that the signal is a demodulation reference signal and/or a measurement reference signal, determining a minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by signals, frequency domain resources occupied by signals, and code domain resources occupied by signals.
Optionally, the sending the signal for channel estimation to the second communication node comprises: informing the second communication node of the relevant information of the first resource unit by the relevant information of the first resource unit; informing the related information of the first resource unit to the second communication node through the related information of the second resource unit;
Optionally, before sending the signal for channel estimation to the second communication node, determining the time domain/frequency domain/code domain resource occupied by the second resource unit according to at least one of the following information: time domain information, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information of the broadcast channel.
Optionally, the frequency domain/code domain resource occupied by the first resource unit is determined according to the time domain information.
Optionally, determining the K value according to at least one of the following manners, further comprising: determining the K value according to the system bandwidth according to the mode of informing the K value to the second communication node; determining a K value according to the bandwidth information corresponding to the second communication node; determining a K value according to a resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node.
Optionally, the first receiving module is further configured to notify the second communication node of a type of the second resource unit, where the type of the second resource unit includes: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Fig. 32 is a block diagram of a structure of a receiving apparatus for a control channel according to an embodiment of the present invention, as shown in fig. 32, the apparatus including:
a first determining module 322 configured to determine a set of demodulation reference signal ports of a control channel, wherein the set of demodulation reference signal ports of the control channel is a subset of a second set of reference signal ports;
a second receiving module 324, connected to the first determining module 322, for receiving the control channel on the determined control channel demodulation reference signal port;
wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and is obtained according to the signaling information sent by the first communication node, the demodulation reference signal set of the broadcast channel, and the measurement reference signal port set.
Optionally, the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: the method comprises the steps of sending resource information corresponding to a second communication node, time parameters corresponding to a control channel, the number M1 of port sets of demodulation reference signals, the type of a control channel region where the control channel is located, the time parameters corresponding to the control channel region where the control channel is located, frequency domain resource indexes corresponding to the control channel, control channel unit indexes of the control channel, control resource group indexes of the control channel, and receiving signaling information sent by a first communication node, wherein the signaling information comprises related information of the demodulation reference signals of the control channel.
Optionally, the transmission resource satisfies at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the multiple transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, the set of demodulation reference signal ports of the control channel satisfies one of the following characteristics: the set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, the set of demodulation reference signal ports of the control channel is obtained by one of the following methods: detecting a reference signal in the second reference signal port set, and selecting one or more reference signal ports in the second reference signal port set to form a demodulation reference signal port set of a control channel according to the receiving performance of the reference signal; detecting a control channel on each reference signal port of the second reference signal port set, wherein the reference signal set which is successfully detected forms a demodulation reference signal port set of the control channel; and the demodulation reference signal port set of the control channel is obtained according to the signaling information sent by the first communication node.
Optionally, the first determining module is further configured to assume that one or more other control channels may occupy a port in a third set of reference signal ports, where the third set of reference signal ports is a difference set between the second set of reference signal ports and the set of control channel demodulation reference signal ports.
Optionally, in a case that the control channel areas where the control channels are located are different, the determining device of the demodulation reference signal of the control channel is different, and/or the detecting device of the control channel is different, and/or the minimum sending unit of the demodulation reference signal of the control channel is different.
Optionally, the first determining module is further configured to determine, in the first control channel region, that the demodulation reference signal of the control channel is a second reference signal port set, and in the second control channel region, that the demodulation reference signal of the control channel is a proper subset of the second reference signal port set; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with the frequency domain resource; the demodulation reference signal of the control channel in the second control channel region is changed along with the frequency domain resource; in the first control channel region, the demodulation reference signal port of the control channel can be determined only according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel; in the first control channel region, it is assumed that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, it is assumed that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, demodulation reference signal ports of control channels in different control channel regions satisfy at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control areas are the same in number; the set of demodulation reference signal ports for control channels in one control channel region is a subset of the set of demodulation reference signal ports for control channels in another control region.
Optionally, the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel regions are multiplexed by time division, frequency division and/or code division; the union set of different control channel regions is the same with the system bandwidth in the frequency domain; the union of the different control channel regions is the same bandwidth in the frequency domain as the second communication node.
Optionally, the control channel region satisfies at least one of the following characteristics: acquiring the type of a control channel region contained in a time unit according to the time parameter information of the time unit; the configuration information sent by the first communication node indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, the demodulation reference signal of the control channel satisfies at least one of the following characteristics: in the first control channel region, it is assumed that the first communication node transmits the demodulation reference signal of the control channel only in a time unit in which the control channel is transmitted. In the second control channel region, it is assumed that the first communication node transmits the demodulation reference signal of the control channel in an appointed time unit and a time unit for transmitting the control channel, and it is assumed that the first communication node may not transmit the control channel of the second communication node in the appointed time unit.
Optionally, the minimum transmission unit of the demodulation reference signal of the control channel further satisfies at least one of the following characteristics: the minimum sending unit is one or more control channel resource groups; the minimum sending unit is one or more control channel units; the minimum sending unit is the resource occupied by one or more candidate control channels; the minimum sending unit is a resource occupied by a search space with the same polymerization degree; the minimum sending unit is a resource occupied by all search controls of all polymerization degrees of the second communication node; the minimum transmission unit is a control channel region.
Optionally, the same reference signal port of different control regions is quasi co-located; or in a first predetermined time unit, the same reference signal ports of different control areas are quasi co-located, and in time units other than the first predetermined time unit, the same reference signal ports of different control areas do not have quasi co-location relation.
Fig. 33 is a block diagram of a structure of a transmission apparatus of a control channel according to an embodiment of the present invention, as shown in fig. 33, the apparatus including:
a second determining module 332, configured to determine a set of demodulation reference signal ports of a control channel, wherein the demodulation reference signal ports of the control channel are a subset of the second set of reference signal ports;
a second sending module 334, connected to the second determining module 332, configured to send the control channel to the second communication node on the determined demodulation reference signal port;
wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and the second reference signal port set is obtained according to signaling information sent to a second communication node, a demodulation reference signal set of a broadcast channel, and a measurement reference signal port set.
Optionally, the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: the method comprises the steps of sending resource information corresponding to a second communication node, time parameters corresponding to a control channel, the number M1 of port sets of demodulation reference signals, the type of a control channel region where the control channel is located, the time parameters corresponding to the control channel region where the control channel is located, frequency domain resource indexes corresponding to the control channel, control channel unit indexes of the control channel, control resource group indexes of the control channel, and receiving signaling information sent by a first communication node, wherein the signaling information comprises related information of the demodulation reference signals of the control channel.
Optionally, the transmission resource satisfies at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the multiple transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, the demodulation reference signal port set of the control channel satisfies one of the following characteristics: the set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, the second determining module is further configured to send signaling information to the second communication node, where the signaling information includes demodulation reference signal port information of the control channel.
Optionally, the control channel region where the control channel is located is different, the determination device of the demodulation reference signal of the control channel is different, and/or the transmission device of the control channel is different.
Optionally, in a case that the control channel regions where the control channels are located are different, the second determining module is further configured to determine that, in the first control channel region, the demodulation reference signal of the control channel is a second reference signal port set, and in the second control channel region, the demodulation reference signal of the control channel is a proper subset of the second reference signal port set; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; in the first control channel region, the demodulation reference signal ports of the control channels can be determined according to the number of ports included in the demodulation reference signals of the control channels, and in the second control channel region, the demodulation reference signal ports of the control channels cannot be determined according to the number of ports included in the demodulation reference signals of the control channels; in the first control channel region, it is assumed that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, it is assumed that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, demodulation reference signal ports of control channels in different control channel regions satisfy at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control areas are the same in number; the set of demodulation reference signal ports for control channels in one control channel region is a subset of the set of demodulation reference signal ports for control channels in another control region.
Optionally, the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel region time domains are overlapped; multiplexing different control channel regions in a time division, and/or frequency division, and/or code division mode; the different control channel regions and the union fill the system bandwidth.
Optionally, the control channel region is determined by: and acquiring the control channel region contained in the time unit according to the time parameter information of the time unit.
Optionally, the second determining module is further configured to send configuration information to the second communication node, where the configuration information indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, the second determining module is further configured to send, in the first control channel region, the demodulation reference signal of the control channel only in the time unit for sending the control channel; in the second control channel region, the demodulation reference signal of the control channel is transmitted in an agreed time unit, in which the control channel of the second communication node may not be transmitted, and a time unit in which the control channel is transmitted.
Optionally, the minimum unit for reference signal transmission of the first control region is different from the minimum unit for reference signal transmission of the second control region.
Optionally, the minimum transmission units of different control channel regions further satisfy at least one of the following characteristics: the minimum sending unit is one or more control channel resource groups; the minimum sending unit is one or more control channel units; the minimum sending unit is a resource occupied by one or more candidate control channels; the minimum sending unit is a resource occupied by a searching space with the same polymerization degree; the minimum sending unit is a resource occupied by all search controls of all polymerization degrees of the second communication node; the minimum transmission unit is the control channel region.
Optionally, the same reference signal port of different control regions is quasi co-located; or in a first predetermined time unit, the same reference signal ports of different control areas are quasi co-located, and in time units other than the first predetermined time unit, the same reference signal ports of different control areas do not have quasi co-location relation.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Example 3
The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:
s1, receiving a signal sent by a first communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is used for determining relevant transmission parameters of the signal, and the second resource unit comprises at least one of the following: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the first resource unit comprises at least one of the following units: the method comprises the steps of pre-coding resource block groups of signals, minimum sending units of the signals, resource units of first reference signals corresponding to the signals, and minimum resource units of signal sending patterns.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, after receiving a signal sent by a first communication node, further including: and acquiring a channel estimation value of the signal according to the relevant transmission parameter of the signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the first reference signal meets at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the port set of the first reference signal is a subset of a port set of a demodulation reference signal of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, a first resource unit of a signal is determined according to at least one of the following: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the first resource unit of the signal is K times of the second resource unit, and the signal comprises at least one of the following characteristics: the frequency domain resource of the first resource unit is K times of the frequency domain resource of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
S1, when the signal is a demodulation reference signal and/or a measurement reference signal, determining a minimum resource unit of a signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by signals, frequency domain resources occupied by signals, and code domain resources occupied by signals.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
the S1, receiving the signal sent by the first communication node comprises: receiving the related information of the first resource unit notified by the first communication node, and obtaining the related information of the second resource unit according to the related information of the first resource unit; and receiving the related information of the second resource unit notified by the first communication node, and obtaining the related information of the first resource unit according to the related information of the second resource unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, determining time domain/frequency domain/code domain resources occupied by a second resource unit according to at least one of the following information: the time domain parameters, the identification information of the second communication node, the bandwidth information corresponding to the second communication node, and the frequency domain information of the broadcast channel.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, determining frequency domain/code domain resources occupied by a first resource unit according to time domain information.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, determining a K value according to at least one of the following modes, and further comprising: receiving a K value notified by a first communication node; determining a K value according to the system bandwidth; determining a K value according to the bandwidth information corresponding to the second communication node; determining a K value according to a resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
the S1, receiving the signal sent by the first communication node comprises: receiving a type of a second resource unit notified by the first communication node, the type of the second resource unit including: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of:
s1, sending a signal to a second communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is used for determining relevant transmission parameters of the signal, and the second resource unit comprises at least one of the following: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource of the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the first resource unit comprises at least one of: the method comprises the steps of pre-coding resource block groups of signals, minimum sending units of the signals, resource units of first reference signals corresponding to the signals, and minimum resource units of signal sending patterns.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, sending a signal to a second communication node includes: and sending the signal to the second communication node according to the relevant transmission parameter of the signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the first reference signal meets at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the port set of the first reference signal is a subset of a port set of a demodulation reference signal of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
S1, the signal comprises at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, a first resource unit of a signal is determined according to at least one of the following: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the first resource unit of the signal is K times of the second resource unit, and the signal comprises at least one of the following characteristics: the frequency domain resource of the first resource unit is K times that of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, when the signal is a demodulation reference signal and/or a measurement reference signal, determining a minimum resource unit of a signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by signals, frequency domain resources occupied by signals and code domain resources occupied by signals.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, transmitting a signal for channel estimation to a second communication node includes: informing the second communication node of the related information of the first resource unit by the related information of the first resource unit; informing the related information of the first resource unit to the second communication node through the related information of the second resource unit;
optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, before sending a signal for channel estimation to a second communication node, determining time domain/frequency domain/code domain resources occupied by a second resource unit according to at least one of the following information: time domain information, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information of the broadcast channel.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, determining frequency domain/code domain resources occupied by a first resource unit according to time domain information.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
S1, determining a K value according to at least one of the following modes, and further comprising: determining the K value according to the system bandwidth according to the mode of informing the K value to the second communication node; determining a K value according to the bandwidth information corresponding to the second communication node; determining a K value according to a resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, sending a signal to a second communication node includes: a type of the second resource unit notified to the second communication node, the type of the second resource unit comprising: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of:
S1, determining a demodulation reference signal port set of a control channel, wherein the demodulation reference signal port set of the control channel is a subset of a second reference signal port set;
s2, receiving a control channel on the determined control channel demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and is obtained according to the signaling information sent by the first communication node, the demodulation reference signal set of the broadcast channel, and the measurement reference signal port set.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, a demodulation reference signal port set of a control channel is obtained according to at least one of the following information: sending resource information corresponding to the second communication node, a time parameter corresponding to the control channel, the number M1 of port sets of demodulation reference signals, the type of a control channel region where the control channel is located, a time parameter corresponding to a control channel region where the control channel is located, a frequency domain resource index corresponding to the control channel, a control channel unit index of the control channel, and a control resource group index of the control channel; the transmission resource is a transmission resource adopted by the first communication node in a communication link for receiving a signal sent by the first communication node, and the transmission resource of the first communication node includes at least one of the following resource types: the method comprises the steps of sending beam resources, sending port resources, sending precoding matrix resources, sending time resources, sending frequency domain resources and sending sequence resources, wherein the sending resources are resources adopted by a first communication node for sending signals.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the transmission resource meets at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the multiple transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, a demodulation reference signal port set of a control channel meets one of the following characteristics: a set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, a demodulation reference signal port set of a control channel is obtained through one of the following modes: detecting a reference signal in the second reference signal port set, and selecting one or more reference signal ports in the second reference signal port set to form a demodulation reference signal port set of a control channel according to the receiving performance of the reference signal; detecting a control channel on each reference signal port of the second reference signal port set, wherein the reference signal set which is successfully detected forms a demodulation reference signal port set of the control channel; and the demodulation reference signal port set of the control channel is obtained according to the signaling information sent by the first communication node.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, determining a demodulation reference signal port set of a control channel comprises: it is assumed that one or more other control channels may occupy a port in a third set of reference signal ports, which is the difference between the second set of reference signal ports and the set of control channel demodulation reference signal ports.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, under the condition that the control channel areas where the control channels are located are different, the determining methods of the demodulation reference signals of the control channels are different, and/or the detection methods of the control channels are different, and/or the minimum sending units of the demodulation reference signals of the control channels are different.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, determining a demodulation reference signal port set of a control channel comprises at least one of the following steps: in the first control channel region, the demodulation reference signals of the control channel are a second set of reference signal ports, and in the second control channel region, the demodulation reference signals of the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with the frequency domain resource; the demodulation reference signal of the control channel in the second control channel region is changed along with the frequency domain resource; in the first control channel region, the demodulation reference signal port of the control channel can be determined only according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel; in the first control channel region, it is assumed that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, it is assumed that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, demodulation reference signal ports of control channels in different control channel regions meet at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control areas are the same in number; the set of demodulation reference signal ports for control channels in one control channel region is a subset of the set of demodulation reference signal ports for control channels in another control region.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, different control channel regions meet at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel regions are multiplexed by time division, frequency division and/or code division; the union set of different control channel regions is the same with the system bandwidth in the frequency domain; the union of the different control channel regions is the same bandwidth in the frequency domain as the second communication node.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the control channel region meets at least one of the following characteristics: acquiring the type of a control channel region contained in a time unit according to the time parameter information of the time unit; the configuration information sent by the first communication node indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the demodulation reference signal of the control channel meets at least one of the following characteristics: in the first control channel region, it is assumed that the first communication node transmits a demodulation reference signal of the control channel only in a time unit in which the control channel is transmitted; in the second control channel region, it is assumed that the first communication node transmits the demodulation reference signal of the control channel in an appointed time unit and a time unit for transmitting the control channel, and it is assumed that the first communication node may not transmit the control channel of the second communication node in the appointed time unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the minimum sending unit of the demodulation reference signal of the control channel also meets at least one of the following characteristics: the minimum sending unit is one or more control channel resource groups; the minimum sending unit is one or more control channel units; the minimum sending unit is the resource occupied by one or more candidate control channels; the minimum sending unit is a resource occupied by a search space with the same polymerization degree; the minimum sending unit is a resource occupied by all search controls of all polymerization degrees of the second communication node; the minimum transmission unit is a control channel region.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, in a first preset time unit, the same reference signal ports of different control areas are quasi-co-located, and in time units except for a second preset time unit, the same reference signal ports of different control areas do not have quasi-co-location relation.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of:
s1, determining a demodulation reference signal port set of a control channel, wherein the demodulation reference signal port of the control channel is a subset of a second reference signal port set; transmitting a control channel to the second communication node on the determined demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and is obtained according to the signaling information sent to the second communication node, the demodulation reference signal set of the broadcast channel, and the measurement reference signal port set.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
S1, a demodulation reference signal port set of a control channel is obtained according to at least one of the following information: sending resource information corresponding to the second communication node, a time parameter corresponding to the control channel, the port set number M1 of the demodulation reference signal, the type of a control channel region where the control channel is located, a time parameter corresponding to the control channel region where the control channel is located, a frequency domain resource index corresponding to the control channel, a control channel unit index of the control channel, and a control resource group index of the control channel; the sending resource is used by the first communication node in a communication link of a signal sent to the second communication node, and the sending resource used by the first communication node is a sending resource to the second communication node, and the sending resource includes at least one of the following resource types: the method comprises the steps of sending beam resources, sending port resources, sending precoding matrix resources, sending time resources, sending frequency domain resources and sending sequence resources, wherein the sending resources are resources used for sending signals to a second communication node.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the transmission resource meets at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the transmission resources and the demodulation reference signal port set; the multiple transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, a demodulation reference signal port set of a control channel meets one of the following characteristics: the set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, determining a demodulation reference signal port set of a control channel comprises: and sending signaling information to the second communication node, wherein the signaling information comprises demodulation reference signal port information of the control channel.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, control channel areas where control channels are located are different, determination methods of demodulation reference signals of the control channels are different, and/or sending methods of the control channels are different.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, under the condition that the control channel areas where the control channels are located are different, determining a demodulation reference signal port set of the control channels comprises at least one of the following methods: in the first control channel region, the demodulation reference signals of the control channel are a second set of reference signal ports, and in the second control channel region, the demodulation reference signals of the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; in the first control channel region, the demodulation reference signal ports of the control channels can be determined according to the number of ports included in the demodulation reference signals of the control channels, and in the second control channel region, the demodulation reference signal ports of the control channels cannot be determined according to the number of ports included in the demodulation reference signals of the control channels; in the first control channel region, it is assumed that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, it is assumed that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, demodulation reference signal ports of control channels in different control channel regions meet at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control areas are the same in number; the set of demodulation reference signal ports for control channels in one control channel region is a subset of the set of demodulation reference signal ports for control channels in another control region.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, different control channel regions meet at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel region time domains overlap; different control channel regions are multiplexed by time division, frequency division and/or code division; the different control channel regions and the union fill the system bandwidth.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the control channel region is determined by the following method: and acquiring a control channel region contained in the time unit according to the time parameter information of the time unit.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, determining a demodulation reference signal port set of a control channel comprises: and sending configuration information to the second communication node, wherein the configuration information indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, determining a demodulation reference signal port set of a control channel comprises: transmitting a demodulation reference signal of a control channel only in a time unit of transmitting the control channel in a first control channel region; in the second control channel region, the demodulation reference signal of the control channel is transmitted in an appointed time unit, in which the control channel of the second communication node may not be transmitted, and the time unit in which the control channel is transmitted.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the minimum unit for transmitting the reference signal in the first control area is different from the minimum unit for transmitting the reference signal in the second control area.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, the minimum sending units of different control channel regions also meet at least one of the following characteristics: the resource occupied by the candidate control channel in the search space in the first control channel region is a minimum sending unit; the resource occupied by a search space with the same aggregation degree in the first control channel region is the minimum sending unit; the resource occupied by all the search spaces of all the polymerization degrees in the first control channel region is a minimum sending unit; the minimum unit for sending the reference signal in the second control channel region is the second control channel region; the smallest unit of reference signal transmission in the second control channel region is the entire system bandwidth.
Optionally, the storage medium is further arranged to store program code for performing the steps of:
s1, in a first preset time unit, the same reference signal ports of different control areas are quasi-co-located, and in time units except for a second preset time unit, the same reference signal ports of different control areas do not have quasi-common value relationship.
Optionally, in this embodiment, the storage medium may include but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: receiving a signal sent by a first communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is used for determining relevant transmission parameters of the signal, and the second resource unit comprises at least one of the following: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the first resource unit includes at least one of: the method comprises the steps of precoding resource block groups of signals, minimum sending units of the signals, resource units of first reference signals corresponding to the signals, and minimum resource units for determining signal sending patterns.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: after receiving the signal transmitted by the first communication node, the method further comprises: and acquiring a channel estimation value of the signal according to the relevant transmission parameter of the signal.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the port set of the first reference signal is a subset of a port set of a demodulation reference signal of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the signal includes at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the first resource unit of the signal is determined based on at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the first resource unit of the signal is K times the second resource unit and includes at least one of the following features: the frequency domain resource of the first resource unit is K times of the frequency domain resource of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: when the signal is a demodulation reference signal and/or a measurement reference signal, determining the minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by signals, frequency domain resources occupied by signals, and code domain resources occupied by signals.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: receiving a signal transmitted by a first communication node for use includes: receiving the related information of the first resource unit notified by the first communication node, and obtaining the related information of the second resource unit according to the related information of the first resource unit; and receiving the related information of the second resource unit notified by the first communication node, and obtaining the related information of the first resource unit according to the related information of the second resource unit.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: determining the time domain/frequency domain/code domain resources occupied by the second resource unit according to at least one of the following information: the time domain parameters, the identification information of the second communication node, the bandwidth information corresponding to the second communication node, and the frequency domain information of the broadcast channel.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: and determining the frequency domain/code domain resources occupied by the first resource unit according to the time domain information.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: determining the value of K according to at least one of the following ways, further comprising: receiving a K value notified by a first communication node; determining a K value according to the system bandwidth; determining a K value according to the bandwidth information corresponding to the second communication node; determining a K value according to a resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: receiving a signal transmitted by a first communication node for use includes: receiving a type of a second resource unit notified by the first communication node, the type of the second resource unit including: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of: sending a signal to a second communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number; wherein the first resource unit is used for determining relevant transmission parameters of the signal, and the second resource unit comprises at least one of the following: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all the search spaces of the second communication node, a control channel sub-band, a bandwidth resource of the second communication node, a resource occupied by a signal and a physical resource block PRB.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the first resource unit includes at least one of: the method comprises the steps of pre-coding resource block groups of signals, minimum sending units of the signals, resource units of first reference signals corresponding to the signals, and minimum resource units of signal sending patterns.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: transmitting a signal to a second communication node comprises: and sending the signal to the second communication node according to the relevant transmission parameter of the signal.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the first reference signal satisfies at least one of the following characteristics: the signal and the first reference signal are quasi co-located; channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal; the port set of the first reference signal is a subset of a port set of a demodulation reference signal of the signal; the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal; the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty; the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal; the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the signal includes at least one of: control channel signals, demodulation reference signals, measurement reference signals, data channel signals.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the first resource unit of the signal is determined based on at least one of: determining according to a second resource unit corresponding to the signal; determining according to the bandwidth corresponding to the second communication node; determining according to the control domain bandwidth of the second communication node; and determining according to the resource mapping mode corresponding to the signal.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the first resource unit of the signal is K times the second resource unit and includes at least one of the following features: the frequency domain resource of the first resource unit is K times of the frequency domain resource of the second resource unit; the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit; the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: when the signal is a demodulation reference signal and/or a measurement reference signal, determining a minimum resource unit of a signal transmission pattern includes: a transmission pattern of the signal is determined according to the minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by signals, frequency domain resources occupied by signals, and code domain resources occupied by signals.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the transmitting a signal for channel estimation to the second communication node comprises: informing the second communication node of the relevant information of the first resource unit by the relevant information of the first resource unit; informing the related information of the first resource unit to the second communication node through the related information of the second resource unit;
optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: before transmitting a signal for channel estimation to the second communication node, determining time domain/frequency domain/code domain resources occupied by the second resource unit according to at least one of the following information: time domain information, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information of the broadcast channel.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: and determining the frequency domain/code domain resources occupied by the first resource unit according to the time domain information.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: determining the value of K according to at least one of the following ways, further comprising: determining the K value according to the system bandwidth and the mode of informing the K value to the second communication node; determining a K value according to the bandwidth information corresponding to the second communication node; determining a K value according to a resource mapping mode of the signal; and determining the K value according to the number of the sending resources fed back by the second communication node.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: transmitting a signal to a second communication node comprises: a type of the second resource unit notified to the second communication node, the type of the second resource unit comprising: the method comprises the steps of a control channel resource group, a control channel unit, a candidate control channel, a search space under a polymerization degree of the control channel, a special search space of a second communication node, a public search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource corresponding to the second communication node, a resource occupied by a signal and a physical resource block PRB.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of: determining a set of demodulation reference signal ports of a control channel, wherein the set of demodulation reference signal ports of the control channel is a subset of the second set of reference signal ports; receiving a control channel on the determined control channel demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and is obtained according to the signaling information sent by the first communication node, the demodulation reference signal set of the broadcast channel, and the measurement reference signal port set.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: sending resource information corresponding to the second communication node, a time parameter corresponding to the control channel, the port set number M1 of the demodulation reference signal, the type of a control channel region where the control channel is located, a time parameter corresponding to the control channel region where the control channel is located, a frequency domain resource index corresponding to the control channel, a control channel unit index of the control channel, and a control resource group index of the control channel; the sending resource is a sending resource adopted by the first communication node in a communication link for receiving a signal sent by the first communication node, and the sending resource of the first communication node includes at least one of the following resource types: the method comprises the steps of sending a beam resource, a port resource, a precoding matrix resource, a time resource, a frequency domain resource and a sequence resource, wherein the sending resource is a resource used by a first communication node for sending signals.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the transmission resources satisfy at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the multiple transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the demodulation reference signal port set of the control channel satisfies one of the following characteristics: the set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the demodulation reference signal port set of the control channel is obtained by one of the following methods: detecting a reference signal in the second reference signal port set, and selecting one or more reference signal ports in the second reference signal port set to form a demodulation reference signal port set of a control channel according to the receiving performance of the reference signal; detecting a control channel on each reference signal port of the second reference signal port set, wherein the reference signal set which is successfully detected forms a demodulation reference signal port set of the control channel; and the demodulation reference signal port set of the control channel is obtained according to the signaling information sent by the first communication node.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: determining a set of demodulation reference signal ports for a control channel comprises: it is assumed that one or more other control channels may occupy a port in a third set of reference signal ports, which is the difference between the second set of reference signal ports and the set of control channel demodulation reference signal ports.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: under the condition that the control channel areas where the control channels are located are different, the determination methods of the demodulation reference signals of the control channels are different, and/or the detection methods of the control channels are different, and/or the minimum sending units of the demodulation reference signals of the control channels are different.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: determining the set of demodulation reference signal ports for the control channel comprises at least one of: in the first control channel region, the demodulation reference signals of the control channel are a second set of reference signal ports, and in the second control channel region, the demodulation reference signals of the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with the frequency domain resource; the demodulation reference signal of the control channel in the second control channel region is changed along with the frequency domain resource; in the first control channel region, the demodulation reference signal port of the control channel can be determined only according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel; in the first control channel region, it is assumed that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, it is assumed that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the demodulation reference signal ports of the control channels in different control channel regions meet at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control areas are the same in number; the set of demodulation reference signal ports for control channels in one control channel region is a subset of the set of demodulation reference signal ports for control channels in another control region.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel regions are multiplexed by time division, frequency division and/or code division; the union set of different control channel regions is the same with the system bandwidth in the frequency domain; the union of the different control channel regions is the same bandwidth in the frequency domain as the second communication node.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the control channel region satisfies at least one of the following characteristics: acquiring the type of a control channel region contained in a time unit according to the time parameter information of the time unit; the configuration information sent by the first communication node indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the demodulation reference signal of the control channel satisfies at least one of the following characteristics: in the first control channel region, the first communication node is assumed to transmit a demodulation reference signal of the control channel only in a time unit of transmitting the control channel; in the second control channel region, it is assumed that the first communication node transmits the demodulation reference signal of the control channel in an agreed time unit and a time unit for transmitting the control channel, and it is assumed that the first communication node may not transmit the control channel of the second communication node in the agreed time unit.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the minimum transmission unit of the demodulation reference signal of the control channel also satisfies at least one of the following characteristics: the minimum sending unit is one or more control channel resource groups; the minimum sending unit is one or more control channel units; the minimum sending unit is the resource occupied by one or more candidate control channels; the minimum sending unit is a resource occupied by a search space with the same polymerization degree; the minimum sending unit is a resource occupied by all search controls of all polymerization degrees of the second communication node; the minimum transmission unit is a control channel region.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: in the first predetermined time unit, the same reference signal ports of different control areas are quasi-co-located, and in time units other than the second predetermined time unit, the same reference signal ports of different control areas do not have quasi-co-location relationship.
According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the steps of: determining a set of demodulation reference signal ports of a control channel, wherein the demodulation reference signal ports of the control channel are a subset of the second set of reference signal ports; transmitting a control channel to the second communication node on the determined demodulation reference signal port; wherein the second set of reference signal ports is determined by at least one of: the second reference signal port set is fixed, and the second reference signal port set is obtained according to signaling information sent to the second communication node, a demodulation reference signal set of a broadcast channel, and a measurement reference signal port set.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the demodulation reference signal port set of the control channel is obtained according to at least one of the following information: sending resource information corresponding to the second communication node, a time parameter corresponding to the control channel, the number M1 of port sets of demodulation reference signals, the type of a control channel region where the control channel is located, a time parameter corresponding to a control channel region where the control channel is located, a frequency domain resource index corresponding to the control channel, a control channel unit index of the control channel, and a control resource group index of the control channel; the transmission resource is a transmission resource adopted by the first communication node in a communication link of a signal transmitted to the second communication node, and the transmission resource comprises at least one of the following resource types: the method comprises the steps of sending beam resources, sending port resources, sending precoding matrix resources, sending time resources, sending frequency domain resources and sending sequence resources, wherein the sending resources are resources used for sending signals to a second communication node.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the transmission resources satisfy at least one of the following characteristics: a one-to-one correspondence relationship exists between the sending resource and the demodulation reference signal port; a one-to-one correspondence relationship exists between the sending resources and the demodulation reference signal port set; the multiple transmission resources correspond to one same demodulation reference signal port; and when the sending resource corresponding to the second communication node is changed, the second reference signal port set is correspondingly changed.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the demodulation reference signal port set of the control channel satisfies one of the following characteristics: a set of demodulation reference signal ports of the control channel is variable at different time units; the set of demodulation reference signal ports of the control channel is variable in different frequency domain resources.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: determining a set of demodulation reference signal ports for a control channel comprises: and sending signaling information to the second communication node, wherein the signaling information comprises demodulation reference signal port information of the control channel.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the control channel areas where the control channels are located are different, the determination methods of the demodulation reference signals of the control channels are different, and/or the transmission methods of the control channels are different.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: under the condition that the control channel areas where the control channels are located are different, determining the demodulation reference signal port set of the control channels comprises at least one of the following methods: in the first control channel region, the demodulation reference signals of the control channel are a second set of reference signal ports, and in the second control channel region, the demodulation reference signals of the control channel are a proper subset of the second set of reference signal ports; the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying; in a first control channel region, a demodulation reference signal port of a control channel can be determined according to the number of ports included in a demodulation reference signal of the control channel, and in a second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel; in the first control channel region, it is assumed that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, it is assumed that other control channels occupy the time-frequency resources occupied by the control channels.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the demodulation reference signal ports of the control channels in different control channel regions meet at least one of the following characteristics: the demodulation reference signal ports of the control channels in different control areas are the same in number; the set of demodulation reference signal ports for control channels in one control channel region is a subset of the set of demodulation reference signal ports for control channels in another control region.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the different control channel regions satisfy at least one of the following characteristics: the intersection of the different control channel regions is empty; different control channel regions belong to the same time unit; different control channel region time domains overlap; multiplexing different control channel regions in a time division, and/or frequency division, and/or code division mode; the different control channel regions and sets occupy the system bandwidth.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the control channel region is determined by: and acquiring a control channel region contained in the time unit according to the time parameter information of the time unit.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: determining a set of demodulation reference signal ports for a control channel comprises: and sending configuration information to the second communication node, wherein the configuration information indicates time units in which different control channel regions are located and/or time-frequency resources in which different control channel regions are located.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: determining a set of demodulation reference signal ports for a control channel comprises: transmitting a demodulation reference signal of a control channel only in a time unit of transmitting the control channel in a first control channel region; in the second control channel region, the demodulation reference signal of the control channel is transmitted in an agreed time unit, in which the control channel of the second communication node may not be transmitted, and a time unit in which the control channel is transmitted.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the minimum unit for reference signal transmission of the first control region is different from the minimum unit for reference signal transmission of the second control region.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: the minimum transmission units of different control channel regions also satisfy at least one of the following characteristics: the resource occupied by the candidate control channel in the search space in the first control channel region is a minimum sending unit; the resource occupied by a search space with the same aggregation degree in the first control channel region is a minimum sending unit; the resource occupied by all the search spaces of all the polymerization degrees in the first control channel region is a minimum sending unit; the minimum unit for sending the reference signal in the second control channel region is the second control channel region; the smallest unit of reference signal transmission in the second control channel region is the entire system bandwidth.
Optionally, in this embodiment, the processor executes, according to the program code stored in the storage medium: in the first predetermined time unit, the same reference signal ports of different control regions are quasi co-located, and in time units other than the second predetermined time unit, the same reference signal ports of different control regions do not have quasi co-value relationship.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (66)
1. A signal receiving method, comprising:
Receiving a signal sent by a first communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number;
wherein the first resource unit is configured to determine a transmission parameter of the signal, and the second resource unit includes at least one of: a control channel resource group, a control channel unit, a candidate control channel, a control channel sub-band, a resource occupied by the signal, a physical resource block PRB;
wherein the signal comprises at least one of: a downlink control channel signal, a demodulation reference signal of a downlink control channel;
wherein, when the signal is a demodulation reference signal of the downlink control channel and the first resource unit includes a minimum resource unit that determines the signal transmission pattern, determining the minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to a minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by the signals and frequency domain resources occupied by the signals.
2. The method of claim 1, wherein the first resource unit comprises at least one of: the precoding resource block group of the signal, the minimum transmission unit of the signal, and the minimum resource unit of the signal transmission pattern are determined.
3. The method of claim 1, further comprising, after receiving the signal transmitted by the first communication node: and acquiring a channel estimation value of the signal according to the transmission parameter of the signal.
4. The method of claim 2, wherein the first resource element of the signal is determined based on at least one of:
determining according to a second resource unit corresponding to the signal;
determining according to the control domain bandwidth of the second communication node;
and determining according to the resource mapping mode corresponding to the signal.
5. The method of claim 2, wherein the first resource unit of the signal is K times larger than the second resource unit of the signal comprises at least one of:
the frequency domain resource of the first resource unit is K times the frequency domain resource of the second resource unit;
the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit;
the number of the time-frequency resources included by the first resource unit is K times of the number of the time-frequency resources included by the second resource unit.
6. The method of claim 1, wherein the resource occupied by the second resource unit is determined according to at least one of the following information: time domain parameters, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located, wherein the resources include at least one of: time domain resources, frequency domain resources, code domain resources.
7. The method of claim 2, wherein the frequency domain and code domain resources occupied by the first resource unit are determined according to time domain information.
8. The method of claim 1, wherein determining the value of K is based on at least one of:
receiving the K value notified by the first communication node;
determining the K value according to the system bandwidth;
determining the K value according to the bandwidth information corresponding to the second communication node;
determining the K value according to the resource mapping mode of the signal;
and determining the K value according to the number of the time frequency resources which can be used for controlling channel transmission and are included in the second resource unit.
9. The method of claim 8, wherein the resource mapping of the signal comprises one of:
the control channel unit occupies continuous physical resource blocks;
the control channel unit occupies discrete physical resource blocks;
wherein the signal is a control channel signal.
10. The method of claim 9, wherein:
the K value is greater when the one control channel element occupies a continuous physical resource block than when the one control channel element occupies a discrete physical resource block.
11. The method of claim 2, wherein receiving the signal transmitted by the first communication node comprises: receiving a type of the second resource unit notified by the first communication node, the type of the second resource unit comprising: a control channel resource group, a candidate control channel, a control channel sub-band, a resource occupied by the signal, a physical resource block PRB.
12. The method according to claim 2, wherein in case the first resource unit comprises a precoding resource block group, the precoding resource block group satisfies one of the following characteristics:
the precoding resource block group includes: k control channel resource groups, wherein the K value is a natural number which is less than or equal to M and is greater than 1, and M is the number of the control channel resource groups included in one control channel unit;
the precoding resource block group includes: a control domain bandwidth of a second communication node, wherein the second communication node is a communication node which receives a signal sent by the first communication node;
the precoding resource block group includes: resources in a plurality of time units, wherein one signal has the same precoding in the same frequency domain resources of the plurality of time units.
13. The method of claim 12, wherein a control domain bandwidth of the second communication node satisfies the following characteristics:
and a control domain bandwidth of the second communication node is smaller than a bandwidth of the second communication node, wherein the bandwidth of the second communication node includes a maximum frequency domain range in which a signal allocated to the second communication node by the first communication node may exist, the control domain bandwidth is a maximum bandwidth of control information or control channel hopping of the second communication node, and the hopping includes hopping in one time unit or hopping in different time units.
14. The method according to claim 2, wherein in the case that the signal includes a demodulation reference signal of the downlink control channel, the minimum transmission unit of the demodulation reference signal of the downlink control channel includes at least one of the following characteristics: if the demodulation reference signal is sent, the minimum unit sent by the demodulation reference signal is the minimum sending unit, wherein the demodulation reference signal occupies part of time-frequency resources in the minimum sending unit; the minimum sending unit is a minimum frequency domain sending unit; the minimum sending unit is a minimum resource unit of the demodulation reference signal capable of performing time-frequency interpolation; channel estimation obtained by the same demodulation reference signal port in the same time unit cannot perform channel interpolation in different minimum sending units; the minimum sending unit is one precoding resource block group unit; the minimum sending unit of the demodulation reference signal is larger than one candidate control channel; and in a preset time unit, the first communication node transmits the control channel demodulation reference signal in a minimum transmission unit.
15. The method according to claim 2, wherein in case that the signal includes a demodulation reference signal of the downlink control channel, the determining a minimum resource unit of the signal transmission pattern satisfies at least one of the following characteristics:
the transmission patterns of the demodulation reference signals in different minimum resource units are the same;
the demodulation reference signal may not be present in resource units smaller than the minimum resource unit;
determining that the minimum resource unit of the demodulation reference signal transmission pattern is one control channel resource group;
and each control channel resource group is provided with time-frequency resources occupied by the demodulation reference signals.
16. The method of claim 2, further comprising one of:
the precoding resource block group of the signal, the minimum transmission unit of the signal and the minimum resource unit of the determined signal transmission pattern are the same unit;
the precoding resource block group of the signal and the minimum transmission unit of the signal include an integer multiple of the minimum resource unit of the certain signal transmission pattern.
17. The method of claim 1, wherein the control channel sub-band is a set of control resources and one control information is in one control channel sub-band.
18. The method according to claim 1, wherein, when the control channel region in which the control channel is located is different, the method for determining the demodulation reference signal of the control channel is different, and/or the minimum transmission unit of the demodulation reference signal of the control channel is different.
19. The method of claim 18, wherein demodulation reference signal ports of the control channels in different control channel regions satisfy the following characteristics:
the demodulation reference signal ports of the control channels in different control regions are the same in number.
20. The method of claim 18, wherein the different control channel regions satisfy at least one of the following characteristics:
the intersection of the different control channel regions is empty;
different control channel regions belong to the same time unit;
different control channel regions are multiplexed by time division, frequency division and/or code division;
the union set of different control channel regions is the same with the system bandwidth in the frequency domain;
the union of the different control channel regions is the same bandwidth in the frequency domain as the second communication node.
21. The method of claim 18, wherein the control channel region satisfies at least one of the following characteristics:
Acquiring the type of a control channel region contained in a time unit according to the time parameter information of the time unit;
the configuration information sent by the first communication node indicates at least one of the following information: time units where different control channel regions are located, and time frequency resources where different control channel regions are located.
22. The method of claim 18, wherein the demodulation reference signal of the control channel satisfies at least one of the following characteristics:
in a first control channel region, a first communication node is assumed to transmit a demodulation reference signal of a control channel only in a time unit for transmitting the control channel;
in the second control channel region, it is assumed that the first communication node transmits a demodulation reference signal of the control channel in an agreed time unit and a time unit for transmitting the control channel, and it is assumed that the first communication node may not transmit the control channel of the second communication node in the agreed time unit.
23. The method of claim 18, wherein the minimum transmission unit of the demodulation reference signal of the control channel further satisfies at least one of the following characteristics:
the minimum sending unit is one or more control channel resource groups;
The minimum sending unit is one or more control channel units;
the minimum sending unit is a resource occupied by one or more candidate control channels;
the minimum transmission unit is the control channel region.
24. The method of claim 18,
the same reference signal ports of different control regions are quasi co-located; or,
in a first predetermined time unit, the same reference signal ports of different control areas are quasi-co-located, and in time units other than the first predetermined time unit, the same reference signal ports of different control areas do not have quasi-co-location relation.
25. A signal transmission method, comprising:
sending a signal to a second communication node, wherein a first resource unit of the signal is K times of a second resource unit, and K is a natural number;
wherein the first resource unit is configured to determine a transmission parameter of the signal, and the second resource unit includes at least one of: a control channel resource group, a control channel unit, a candidate control channel, a control channel sub-band, a resource occupied by the signal, a physical resource block PRB;
Wherein the signal comprises at least one of: a downlink control channel signal, a demodulation reference signal of a downlink control channel;
wherein, when the signal is a demodulation reference signal of the downlink control channel and the first resource unit includes a minimum resource unit that determines the signal transmission pattern, determining the minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to a minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by the signal, and frequency domain resources occupied by the signal.
26. The method of claim 25, wherein the first resource unit comprises at least one of: the precoding resource block group of the signal, the minimum transmission unit of the signal, and the minimum resource unit of the signal transmission pattern are determined.
27. The method of claim 25, wherein sending a signal to the second communications node comprises: and sending the signal to the second communication node according to the transmission parameter of the signal.
28. The method of claim 25, wherein the first resource element of the signal is determined according to at least one of:
Determining according to a second resource unit corresponding to the signal;
determining according to the control domain bandwidth of the second communication node;
and determining according to the resource mapping mode corresponding to the signal.
29. The method of claim 25, wherein the first resource unit of the signal is K times larger than the second resource unit of the signal comprises at least one of the following characteristics:
the frequency domain resource of the first resource unit is K times of the frequency domain resource of the second resource unit;
the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit;
the number of the time-frequency resources included by the first resource unit is K times of the number of the time-frequency resources included by the second resource unit.
30. The method according to claim 25, characterised in that prior to signalling to the second communication node, the time and/or frequency domain resources occupied by the second resource element are determined according to at least one of the following information: time domain information, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located.
31. The method of claim 25, wherein the frequency domain and code domain resources occupied by the first resource unit are determined according to time domain information.
32. The method of claim 25, wherein determining and/or signaling the value of K is based on at least one of:
notifying the second communication node of the K value;
determining the K value according to the system bandwidth;
determining the K value according to the bandwidth information corresponding to the second communication node;
determining the K value according to the resource mapping mode of the signal;
and determining the K value according to the number of the time-frequency resources which can be used for controlling channel transmission and are included in the second resource unit.
33. The method of claim 32, wherein the resource mapping of the signal comprises one of:
the control channel unit occupies continuous physical resource blocks;
the control channel unit occupies discrete physical resource blocks;
wherein the signal is a control channel signal.
34. The method of claim 32, wherein:
the K value when the one control channel element occupies a continuous physical resource block is larger than the K value when the one control channel element occupies a discrete physical resource block.
35. The method of claim 25, wherein sending a signal to a second communication node comprises: a type of the second resource unit notified to the second communication node, the type of the second resource unit comprising: the system comprises a control channel resource group, a control channel unit, a candidate control channel, a control channel sub-band and a physical resource block PRB.
36. The method of claim 25, wherein in case that the first resource unit comprises a precoding resource block group, the precoding resource block group satisfies one of the following characteristics:
the precoding resource block group includes: k control channel resource groups, wherein the K value is a natural number which is less than or equal to M and is greater than 1, and M is the number of the control channel resource groups included in one control channel unit;
the precoding resource block group includes: a control domain bandwidth of a second communication node, wherein the second communication node is a communication node which receives a signal sent by the first communication node;
the precoding resource block group includes: a resource in a plurality of time units;
wherein one signal has the same precoding in the same frequency domain resource of a plurality of time units.
37. The method of claim 36, wherein a control domain bandwidth of the second communication node satisfies the following characteristics:
and a control domain bandwidth of the second communication node is smaller than a bandwidth of the second communication node, wherein the bandwidth of the second communication node includes a maximum frequency domain range which is allocated to the second communication node by the first communication node and a signal of which may exist, the control domain bandwidth is a maximum bandwidth of control information or control channel hopping of the second communication node, and the hopping includes hopping in one time unit or hopping in different time units.
38. The method according to claim 25, wherein in the case that the signal includes the demodulation reference signal of the downlink control channel, the minimum transmission unit of the demodulation reference signal of the downlink control channel includes at least one of the following characteristics: if the demodulation reference signal is sent, the minimum unit sent by the demodulation reference signal is the minimum sending unit, wherein the demodulation reference signal occupies part of time-frequency resources in the minimum sending unit; the minimum sending unit is a minimum frequency domain sending unit; the minimum sending unit is a minimum resource unit of the demodulation reference signal capable of performing time-frequency interpolation; channel estimation obtained by the same demodulation reference signal port in the same time unit cannot perform channel interpolation in different minimum sending units; the minimum sending unit is a precoding resource block group unit; the reference signal can be used as a demodulation reference signal by the time-frequency resource in the minimum sending unit; the minimum transmission unit of the demodulation reference signal is larger than one candidate control channel; the first communication node transmits the control channel demodulation reference signal in the minimum transmission unit in a preset time unit.
39. The method of claim 25, wherein in case that the signal comprises a control channel demodulation reference signal, the determining the minimum resource unit of the signal transmission pattern satisfies at least one of the following characteristics:
the transmission patterns of the demodulation reference signals in different minimum resource units are the same;
the demodulation reference signal may not be present in resource units smaller than the minimum resource unit;
determining that the minimum resource unit of the demodulation reference signal transmission pattern is one control channel resource group;
and each control channel resource group is provided with time-frequency resources occupied by the demodulation reference signals.
40. The method of claim 26, further comprising one of:
the precoding resource block group of the signal, the minimum transmission unit of the signal and the minimum resource unit of the determined signal transmission pattern are the same unit;
the precoding resource block group of the signal and the minimum transmission unit of the signal include an integer multiple of the minimum resource unit of the certain signal transmission pattern.
41. The method according to claim 25, wherein the control channel regions in which the control channels are located are different, the determination method of the demodulation reference signals of the control channels is different, and/or the transmission method of the control channels is different, and/or the minimum transmission unit of the demodulation reference signals of the control channels is different.
42. The method of claim 41, wherein in case that the control channel region in which the control channel is located is different, determining the demodulation reference signal port set of the control channel comprises at least one of:
in a first control channel region, the demodulation reference signals for the control channel are a second set of reference signal ports, and in a second control channel region, the demodulation reference signals for the control channel are a proper subset of the second set of reference signal ports;
the demodulation reference signal of the control channel in the first control channel region is fixed and does not change with time; the demodulation reference signal of the control channel in the second control channel region is time-varying;
in the first control channel region, the demodulation reference signal port of the control channel can be determined according to the number of ports included in the demodulation reference signal of the control channel, and in the second control channel region, the demodulation reference signal port of the control channel cannot be determined according to the number of ports included in the demodulation reference signal of the control channel;
and in the first control channel region, assuming that other control channels do not occupy the time-frequency resources occupied by the control channels, and in the second control channel region, assuming that other control channels occupy the time-frequency resources occupied by the control channels.
43. The method of claim 41, wherein demodulation reference signal ports of the control channels in different control channel regions satisfy the following characteristics:
the demodulation reference signal ports of the control channels in different control regions are the same in number.
44. The method of claim 41, wherein the different control channel regions satisfy at least one of the following characteristics:
the intersection of the different control channel regions is empty;
different control channel regions belong to the same time unit;
different control channel region time domains overlap;
multiplexing different control channel regions in a time division, and/or frequency division, and/or code division mode;
the different control channel regions and sets occupy the system bandwidth.
45. The method of claim 41, wherein the control channel region is determined by: and acquiring a control channel region contained in a time unit according to the time parameter information of the time unit.
46. The method of claim 41, wherein determining a set of demodulation reference signal ports for a control channel comprises:
sending configuration information to a second communication node, wherein the configuration information indicates at least one of the following information: time units where different control channel regions are located, and time frequency resources where different control channel regions are located.
47. The method of claim 42, wherein determining a set of demodulation reference signal ports for a control channel comprises:
transmitting, in a first control channel region, a demodulation reference signal of the control channel only in a time unit in which the control channel is transmitted;
in the second control channel region, the demodulation reference signal of the control channel is transmitted in an agreed time unit, in which the control channel of the second communication node may not be transmitted, and a time unit in which the control channel is transmitted.
48. The method of claim 41, wherein the minimum transmission units of different control channel regions further satisfy at least one of the following characteristics:
the minimum sending unit is one or more control channel resource groups;
the minimum sending unit is one or more control channel units;
the minimum sending unit is a resource occupied by one or more candidate control channels;
the minimum transmission unit is the control channel region.
49. The method of claim 41,
the same reference signal ports of different control regions are quasi co-located; or
In the first predetermined time unit, the same reference signal ports of different control areas are quasi co-located, and in time units other than the second predetermined time unit, the same reference signal ports of different control areas do not have quasi co-constant value relationship.
50. The method of claim 25, wherein the control channel sub-band is a set of control resources and a control information is in a control channel sub-band.
51. A signal receiving apparatus, comprising:
a first receiving module, configured to receive a signal sent by a first communication node, where a first resource unit of the signal is K times of a second resource unit, where K is a natural number, and the signal is used to indicate communication between the second communication node and the first communication node;
wherein the first resource unit is configured to determine a transmission parameter of the signal, and the second resource unit includes at least one of: a control channel resource group, a control channel unit, a candidate control channel, a control channel sub-band, a resource occupied by the signal, a physical resource block PRB;
wherein the signal comprises at least one of: a downlink control channel signal, a demodulation reference signal of a downlink control channel;
Wherein, when the signal is a demodulation reference signal of the downlink control channel and the first resource unit includes a minimum resource unit that determines the signal transmission pattern, determining the minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to a minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by the signals and frequency domain resources occupied by the signals.
52. The apparatus of claim 51, wherein the first resource unit comprises at least one of: the precoding resource block group of the signal, the minimum transmission unit of the signal, the resource unit of the first reference signal corresponding to the signal, and the minimum resource unit of the signal transmission pattern are determined.
53. The apparatus according to claim 51, further comprising, after receiving the signal transmitted by the first communication node: and acquiring a channel estimation value of the signal according to the relevant transmission parameter of the signal.
54. The apparatus of claim 52, wherein the first reference signal satisfies at least one of the following characteristics:
The signal and the first reference signal are quasi co-located;
channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal;
the set of ports of the first reference signal is a subset of a set of demodulation reference signal ports of the signal;
the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal;
the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty;
the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal;
the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
55. The apparatus of claim 52, wherein the first resource unit of the signal is K times larger than the second resource unit of the signal comprises at least one of:
the frequency domain resource of the first resource unit is K times of the frequency domain resource of the second resource unit;
the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit;
The number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
56. The apparatus of claim 52, wherein the first receiving module is further configured to receive information related to the first resource unit, which is notified by the first communications node, and obtain information related to the second resource unit according to the information related to the first resource unit; and receiving the related information of the second resource unit notified by the first communication node, and obtaining the related information of the first resource unit according to the related information of the second resource unit.
57. The apparatus of claim 51, wherein the time domain/frequency domain/code domain resource occupied by the second resource unit is determined according to at least one of the following information: time domain parameters, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located.
58. The apparatus of claim 51, wherein the K value is determined according to at least one of the following:
receiving the K value notified by the first communication node;
Determining the K value according to the system bandwidth;
determining the K value according to the bandwidth information corresponding to the second communication node;
determining the K value according to the resource mapping mode of the signal;
and determining the K value according to the number of the time-frequency resources which can be used for controlling channel transmission and are included in the second resource unit.
59. A signal transmission device, comprising:
a first sending module, configured to send a signal to a second communication node, where a first resource unit of the signal is K times of a second resource unit, and K is a natural number;
wherein the first resource unit is configured to determine a related transmission parameter of the signal, and the second resource unit includes at least one of: a control channel resource group, a control channel unit, a candidate control channel, a search space under one polymerization degree of the control channel, a dedicated search space of the second communication node, a common search space which needs to be detected by the second communication node, all search spaces of the second communication node, a control channel sub-band, a bandwidth resource of the second communication node, a resource occupied by the signal, and a physical resource block PRB;
wherein the signal comprises at least one of: a downlink control channel signal, a demodulation reference signal of a downlink control channel;
Wherein, when the signal is a demodulation reference signal of the downlink control channel and the first resource unit includes a minimum resource unit that determines the signal transmission pattern, determining the minimum resource unit of the signal transmission pattern includes: a transmission pattern of the signal is determined according to a minimum resource unit, the transmission pattern of the signal including at least one of: time domain resources occupied by the signals and frequency domain resources occupied by the signals.
60. The apparatus of claim 59, wherein the first resource unit comprises at least one of: the precoding resource block group of the signal, the minimum sending unit of the signal, the resource unit of the first reference signal corresponding to the signal, and the minimum resource unit of the signal sending pattern are determined.
61. The apparatus of claim 59, wherein sending a signal to the second communication node comprises: and sending the signal to the second communication node according to the relevant transmission parameter of the signal.
62. The apparatus of claim 60, wherein the first reference signal satisfies at least one of the following characteristics:
the signal and the first reference signal are quasi co-located;
Channel characteristic information of the signal is obtained according to the channel characteristic information of the first reference signal;
the set of ports of the first reference signal is a subset of a set of demodulation reference signal ports of the signal;
the set of sequences used by the ports of the first reference signal is a subset of the set of sequences used by the demodulation reference signals of the signal;
the intersection of the port set of the first reference signal and the port set of the demodulation reference signal of the signal is empty;
the frequency domain resources occupied by the signal are a subset of the frequency domain resources occupied by the first reference signal;
the time domain resources occupied by the signal are a subset of the time domain resources occupied by the first reference signal.
63. The apparatus of claim 60, wherein the first resource unit of the signal is K times the second resource unit comprises at least one of:
the frequency domain resource of the first resource unit is K times the frequency domain resource of the second resource unit;
the time domain resource of the first resource unit is K times of the time domain resource of the second resource unit;
the number of the time frequency resources included by the first resource unit is K times of the number of the time frequency resources included by the second resource unit.
64. The apparatus according to claim 59, characterised in that sending the signal for channel estimation to the second communication node comprises:
the related information of the first resource unit, which is notified to the second communication node, notifies the related information of the second resource unit through the related information of the first resource unit;
and informing the second communication node of the relevant information of the first resource unit by the relevant information of the second resource unit.
65. The apparatus of claim 59, wherein the time/frequency/code domain resource occupied by the second resource unit is determined according to at least one of the following information before the signal for channel estimation is transmitted to the second communication node: time domain information, identification information of the second communication node, bandwidth information corresponding to the second communication node, and frequency domain information where a broadcast channel is located.
66. The apparatus according to claim 59, wherein the K value is determined and/or signaled according to at least one of:
notifying the second communication node of the K value;
Determining the K value according to the system bandwidth;
determining the K value according to the bandwidth information corresponding to the second communication node;
determining the K value according to the resource mapping mode of the signal;
and determining the K value according to the number of the time-frequency resources which can be used for controlling channel transmission and are included in the second resource unit.
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| PCT/CN2017/120336 WO2018127027A1 (en) | 2017-01-09 | 2017-12-29 | Method and device for receiving signals, method and device for transmitting signals, method and device for receiving control channel, method and device for transmitting control channel, and storage medium |
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| CN111465022B (en) | 2019-01-18 | 2023-07-18 | 华为技术有限公司 | Signal transmitting and receiving method and device |
| CN111867019B (en) * | 2019-04-30 | 2022-04-08 | 中国移动通信有限公司研究院 | Information transmission method, device, related equipment and storage medium |
| CN110932800B (en) * | 2019-11-29 | 2020-09-18 | 北京邮电大学 | Joint detection method and device for broadband multi-user scene |
| US20220046624A1 (en) * | 2020-08-06 | 2022-02-10 | Qualcomm Incorporated | Beam-based initial transmissions, re-transmissions, and search spaces |
| CN114499791A (en) * | 2020-10-27 | 2022-05-13 | 上海朗帛通信技术有限公司 | Method and apparatus in a node used for wireless communication |
| CN117938333A (en) * | 2020-10-14 | 2024-04-26 | 上海朗帛通信技术有限公司 | Method and apparatus in a node for wireless communication |
| WO2022078373A1 (en) * | 2020-10-14 | 2022-04-21 | 上海朗帛通信技术有限公司 | Method used in node for wireless communication, and apparatus |
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