CN114286445A - Method and device for transmitting information - Google Patents

Abstract

The application provides a method and a device for transmitting information, wherein the method comprises the following steps: the method comprises the steps that terminal equipment receives first configuration information sent by network equipment, wherein the first configuration information comprises first indication information, and the first indication information is used for indicating M Control Channel Element (CCE) sets included in a first control resource set; determining a first candidate control channel, the first candidate control channel comprising K CCEs; determining a first target CCE set in which the K CCEs are located in the M CCE sets; and receiving the control information sent by the network equipment on the first candidate control channel according to the reference signal corresponding to the first target CCE set. According to the method, different DMRS (demodulation reference signal) bundles are divided on the CORESET, and more DMRSs in the DMRS bundles are used for joint channel estimation, so that the channel estimation performance is better, and the accuracy of channel estimation is improved.

Description

Method and device for transmitting information

The present application claims priority from a chinese patent application entitled "a method for PDCCH enhancement" filed by the national intellectual property office at 27/9/2020, application number 202011034717.X, the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications, and more particularly, to a method and apparatus for transmitting information in the field of communications.

Background

In a communication system formed by existing terminal equipment and network equipment, the terminal equipment can perform channel estimation, measurement, tracking and the like according to a reference signal sent by the network equipment. Taking a demodulation reference signal (DMRS) as an example, the DMRS needs to undergo a precoding (precoding) process before being transmitted, and precoding granularity of the reference signal in a frequency domain may be configured through high-level signaling. For example, the same precoding may be used in one resource element group bundle (REG bundle), which is called "narrowband precoding", or the same precoding may be used for all Resource Element Groups (REGs) in the frequency domain of the same control resource set (CORESET), which is called "wideband precoding".

For a narrow-band precoding scenario, when a terminal device performs channel estimation, if channel estimation is performed according to a DMRS in one REG Bundle, the accuracy of channel estimation is low, the performance of channel estimation is reduced, and how to improve the accuracy of channel estimation in the narrow-band precoding scenario is a problem that needs to be solved at present.

Disclosure of Invention

The method divides different DMRS bundle on CORESET, and uses more available DMRS in one DMRS bundle to carry out joint channel estimation, so that the channel estimation performance is better, and the accuracy of channel estimation is improved.

In a first aspect, a method for transmitting information is provided, which includes: receiving first configuration information, wherein the first configuration information comprises first indication information, the first indication information is used for indicating M Control Channel Element (CCE) sets included in a first control resource set, and M is an integer greater than or equal to 1; determining a first candidate control channel, the first candidate control channel comprising K CCEs, K being an integer greater than or equal to 1; determining a first target CCE set in which the K CCEs are located in the M CCE sets; and receiving the control information sent by the network equipment on the first candidate control channel according to the reference signal corresponding to the first target CCE set.

Alternatively, the "first control resource set" may be understood as a core of the terminal device for blind detection of the PDCCH candidate, that is, a physical time-frequency resource, where the core occupies a number of RBs in the frequency domain, and may occupy 1 to 3 symbols in the time domain.

It should be understood that, in the embodiment of the present application, "first indication information" is used to instruct the terminal device to divide the number of RBs occupied in the frequency domain into M CCE sets, and each CCE set may include one or more CCEs. It should also be understood that, in the embodiments of the present application, each CCE set may be referred to as a "reference signal bundling set (DMRS bundle)".

It should also be understood that, in the embodiment of the present application, the first target CCE set may be one or more sets divided into M CCE sets on the CORESET. For example, the first target CCE set may be any one CCE set of the M CCE sets, or the first target CCE set may be at least two CCE sets of the M CCE sets, which is not limited in this embodiment of the present application.

In a possible implementation manner, the first configuration information is control resource set configuration information. Optionally, the first configuration information may be implemented by a Radio Resource Control (RRC) message, that is, the first indication information may be implemented by adding or multiplexing some indication field in the RRC message, which is not limited in this embodiment of the present invention.

By the scheme, different DMRS (demodulation reference signals) bundles are divided on the CORESET, and more DMRSs in one DMRS bundle are used for joint channel estimation, so that the channel estimation performance is better, and the accuracy of channel estimation is improved.

Optionally, the first indication information may include different contents, and the terminal device 102 may divide the first control resource set into M control channel element CCE sets according to the different contents included in the first indication information.

In a possible implementation manner, the first indication information includes frequency domain information and time domain information of the first control resource set, and number information N of CCEs included in each CCE set of the M CCE sets, where N is an integer greater than or equal to 1.

It should be understood that, in the embodiment of the present application, each CCE set may be referred to as "DMRS bundle", and the number information N of CCEs included in each CCE set may be referred to as "DMRS bundle size". For example, when the first indication information may include a frequency domain range where all CCEs of the CORESET are located, a time domain range where the CCEs are located (e.g., symbol 1-symbol 3), and a number N of CCEs included in each CCE set, the terminal device may divide the CORESET by the number N of CCEs in turn starting from the first CCE (CCE 0).

It should also be understood that, in the embodiment of the present application, the CCE numbers N included in each CCE set may all be the same, or the CCE numbers N included in some CCE sets may all be the same, or the CCE numbers N included in each CCE set may all be different, and the numerical value and the number of N are not limited in the embodiment of the present application.

In another possible implementation manner, the first indication information includes index information of CCEs included in each of the M CCE sets.

Illustratively, the first indication information includes CCE index information for each CCE set. For example, the first indication information indicates an index identifier of a CCE included in the DMRS bundle, and the terminal device divides the CORESET into different DMRS bundles after receiving the index identifier of the CCE.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the first configuration information further includes second indication information, where the second indication information is used to indicate a precoding manner of the reference signals corresponding to the M CCE sets, and the precoding manner includes any one of the following cases: all reference signals corresponding to the M CCE sets adopt the same precoding; or the reference signals corresponding to each CCE set in the M CCE sets adopt the same precoding; or the reference signals corresponding to each resource element group bundle included on each CCE employ the same precoding.

It should be understood that the precoding manner of the DMRS may include precoding granularity (precoding), or precoding code words, etc. In this embodiment of the application, the second indication information may only configure the precoding manner, or only configure the precoding granularity, and does not specifically indicate the precoding codebook.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, receiving, on the first candidate control channel, control information sent by a network device according to a reference signal corresponding to the first target CCE set includes: according to the precoding mode, determining a target reference signal which has the same precoding mode as that of the reference signals corresponding to the K CCEs in the reference signals corresponding to the first target CCE set; and receiving the control information sent by the network equipment on the first candidate control channel according to the target reference signal.

Through the scheme, in a specific channel estimation process, the terminal equipment can flexibly select the target reference signal according to different precoding modes in the DMRS bundle, namely, the target reference signal with the same precoding mode as that of the reference signal on the first candidate control channel to be detected is selected for channel estimation, so that the flexibility of the channel estimation process of the terminal equipment is improved.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the method further includes: receiving second configuration information, wherein the second configuration information is used for indicating a second target CCE set having an association relation with the first target CCE set; and receiving the control information sent by the network equipment on the first candidate control channel according to the reference signal corresponding to the first target CCE set and the reference signal corresponding to the second target CCE set.

It should be understood that the second configuration information is used to configure an association (linkage) relationship between different DMRS bundles on the CORESET associated with different SSs, where the linkage relationship may be understood as a mapping relationship, that is, the base station may indicate more DMRS bundles for the terminal device, so that the terminal device may perform joint channel estimation according to more DMRSs.

In this embodiment of the present application, it is assumed that a terminal device needs to estimate a first candidate control channel, a DMRS bundle in which a CCE included in the first candidate control channel is located is a first target CCE set, and another DMRS bundle having a certain association with the first target CCE set is a "second target CCE set" in this embodiment of the present application, and a linking relationship between the first target CCE set and the second target CCE set may be defined in a variety of different manners.

In one possible implementation, the second configuration information includes offsets of the first target CCE set and the second target CCE set, where the offsets include at least one of a time domain offset and a frequency domain offset.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the time domain offset is a slot offset and/or a symbol offset, and the frequency domain offset is a CCE offset.

It is to be understood that the first target set of CCEs and the second target set of CCEs may be the same in frequency domain location, different in time domain location; or, the first target CCE set and the second target CCE set may have different frequency domain positions and the same time domain position; alternatively, the first target set of CCEs and the second target set of CCEs may be different in both frequency domain position and time domain position.

Specifically, the time domain information and the frequency domain information of the first target CCE aggregation are known, and the terminal device may determine the time domain information and the frequency domain information of the second target CCE aggregation by configuring slot and/or symbol numbers of time domain offsets and/or CCE numbers of frequency domain offsets of the first target CCE aggregation and the second target CCE aggregation in the second configuration information, so as to determine the second target CCE aggregation.

In another possible implementation manner, the second configuration information includes a mapping relationship between the M CCE sets and L CCE sets, where the L CCE sets are CCE sets in a second control resource set, and the second control resource set and the first control resource set have different identities.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information is search space configuration information.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information is further used to indicate that the second target CCE set and the first target CCE set employ the same precoding manner and/or the same precoding.

By the method, before the terminal equipment acquires the DCI, the terminal equipment can acquire the DMRS estimation channel matrix H1 corresponding to the first target CCE set, acquire the DMRS estimation channel matrix H2 corresponding to the second target CCE set, and generate the channel matrix H according to H1 and H2, namely more DMRSs are used for channel estimation, so that the accuracy of channel estimation is improved. In addition, in a specific channel estimation process, the terminal device may flexibly select the target reference signal according to different precoding modes in the DMRS bundle, that is, select the target reference signal having the same precoding mode as that of the reference signal on the first candidate control channel to be detected for channel estimation, so that the flexibility of the channel estimation process of the terminal device is improved.

It should be understood that the second target CCE set and the first target CCE set may be used for scheduling of different terminal devices, but only during channel estimation, joint channel estimation is performed by using a reference signal available in the second target CCE set, and details are not described later.

In a second aspect, a method for transmitting information is provided, which includes: sending first configuration information, wherein the first configuration information comprises first indication information, the first indication information is used for indicating M Control Channel Element (CCE) sets included in a first control resource set, and M is an integer greater than or equal to 1; and sending control information to the terminal equipment on a first candidate control channel, wherein the first candidate control channel comprises K CCEs, the K CCEs are subsets of a first target CCE set in the M CCE sets, the first target CCE set adopts the same precoding mode as a reference signal corresponding to the first candidate control channel, and K is an integer greater than or equal to 1.

With reference to the second aspect, in some possible implementations, the first indication information includes frequency domain information and time domain information of the first control resource set, and number information N of CCEs included in each of the M CCE sets, where N is an integer greater than or equal to 1.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the first indication information includes index information of CCEs included in each of the M CCE sets.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the first configuration information further includes second indication information, where the second indication information is used to indicate a precoding manner of the reference signals corresponding to the M CCE sets, and the precoding manner includes any one of the following cases: all reference signals corresponding to the M CCE sets adopt the same precoding; or the reference signals corresponding to each CCE set in the M CCE sets adopt the same precoding; or the reference signals corresponding to each resource element group bundle included on each CCE employ the same precoding.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the first target CCE set is precoded in the same manner as the reference signal corresponding to the first candidate control channel.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the method further includes: and sending second configuration information, wherein the second configuration information is used for indicating a second target CCE set having an association relation with the first target CCE set, and the second target CCE set adopts a precoding mode which is the same as that of a reference signal corresponding to the first candidate control channel.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information includes offsets of the first target CCE set and the second target CCE set, where the offsets include at least one of a time domain offset and a frequency domain offset.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the time domain offset is a slot offset and/or a symbol offset, and the frequency domain offset is a CCE offset.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information includes a mapping relationship between the M CCE sets and L CCE sets, where the L CCE sets are CCE sets in a second control resource set, and the second control resource set and the first control resource set have different identifications.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information is search space configuration information.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information is further used to indicate that the second target CCE set and the first target CCE set employ the same precoding manner and/or the same precoding.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the first configuration information is control resource set configuration information.

By the scheme, the network equipment indicates the terminal equipment to divide different DMRS (demodulation reference signals) bundle on the CORESET, and more DMRSs in one DMRS bundle are used for joint channel estimation, so that the channel estimation performance is better, and the accuracy of channel estimation is improved. In addition, in a specific channel estimation process, the terminal device may flexibly select the target reference signal according to different precoding modes in the DMRS bundle, that is, select the target reference signal having the same precoding mode as that of the reference signal on the first candidate control channel to be detected for channel estimation, so that the flexibility of the channel estimation process of the terminal device is improved.

In a third aspect, an apparatus for transmitting information is provided, comprising: a receiving unit, configured to receive first configuration information, where the first configuration information includes first indication information, where the first indication information is used to indicate M Control Channel Element (CCE) sets included in a first control resource set, and M is an integer greater than or equal to 1; a processing unit configured to determine a first candidate control channel, where the first candidate control channel includes K CCEs, and K is an integer greater than or equal to 1; determining a first target CCE set in which the K CCEs are located in the M CCE sets; the receiving unit is further configured to receive, on the first candidate control channel, control information sent by the network device according to the reference signal corresponding to the first target CCE set.

With reference to the third aspect, in some possible implementations, the first indication information includes frequency domain information and time domain information of the first control resource set, and number information N of CCEs included in each of the M CCE sets, where N is an integer greater than or equal to 1.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the first indication information includes index information of CCEs included in each of the M CCE sets.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the first configuration information further includes second indication information, where the second indication information is used to indicate a precoding manner of the reference signals corresponding to the M CCE sets, and the precoding manner includes any one of the following cases: all reference signals corresponding to the M CCE sets adopt the same precoding; or the reference signals corresponding to each CCE set in the M CCE sets adopt the same precoding; or the reference signals corresponding to each resource element group bundle included on each CCE employ the same precoding.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the processing unit is further configured to: according to the precoding mode, determining a target reference signal which has the same precoding mode as that of the reference signals corresponding to the K CCEs in the reference signals corresponding to the first target CCE set; and the receiving unit is further configured to receive, on the first candidate control channel, control information sent by the network device according to the target reference signal.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the receiving unit is further configured to receive second configuration information, where the second configuration information is used to indicate a second target CCE set having an association relationship with the first target CCE set; and receiving the control information sent by the network equipment on the first candidate control channel according to the reference signal corresponding to the first target CCE set and the reference signal corresponding to the second target CCE set.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information includes offsets of the first target CCE set and the second target CCE set, where the offsets include at least one of a time domain offset and a frequency domain offset.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the time domain offset is a slot offset and/or a symbol offset, and the frequency domain offset is a CCE offset.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information includes a mapping relationship between the M CCE sets and L CCE sets, where the L CCE sets are CCE sets in a second control resource set, and the second control resource set and the first control resource set have different identities.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information is search space configuration information.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information is further used to indicate that the second target CCE set and the first target CCE set employ the same precoding manner and/or the same precoding.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the first configuration information is control resource set configuration information.

In a fourth aspect, an apparatus for transmitting information is provided, comprising: a first sending unit, configured to send first configuration information, where the first configuration information includes first indication information, where the first indication information is used to indicate M control channel element CCE sets included in a first control resource set, and M is an integer greater than or equal to 1; a second sending unit, configured to send control information to a terminal device on a first candidate control channel, where the first candidate control channel includes K CCEs, the K CCEs are subsets of a first target CCE set in the M CCE sets, the first target CCE set employs a precoding scheme that is the same as a reference signal corresponding to the first candidate control channel, and K is an integer greater than or equal to 1.

With reference to the fourth aspect, in some possible implementations, the first indication information includes frequency domain information and time domain information of the first control resource set, and number information N of CCEs included in each of the M CCE sets, where N is an integer greater than or equal to 1.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the first indication information includes index information of CCEs included in each of the M CCE sets.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the first configuration information further includes second indication information, where the second indication information is used to indicate a precoding manner of the reference signals corresponding to the M CCE sets, and the precoding manner includes any one of the following cases: all reference signals corresponding to the M CCE sets adopt the same precoding; or the reference signals corresponding to each CCE set in the M CCE sets adopt the same precoding; or the reference signals corresponding to each resource element group bundle included on each CCE employ the same precoding.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the first target CCE set is precoded in the same manner as the reference signal corresponding to the first candidate control channel.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the first sending unit is further configured to send second configuration information, where the second configuration information is used to indicate a second target CCE set having an association relationship with the first target CCE set, and the second target CCE set adopts a same precoding manner as a reference signal corresponding to the first candidate control channel.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information includes offsets of the first target CCE set and the second target CCE set, where the offsets include at least one of a time domain offset and a frequency domain offset.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the time domain offset is a slot offset and/or a symbol offset, and the frequency domain offset is a CCE offset.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information includes a mapping relationship between the M CCE sets and L CCE sets, where the L CCE sets are CCE sets in a second control resource set, and the second control resource set and the first control resource set have different identifications.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information is search space configuration information.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the second configuration information is further used to indicate that the second target CCE set and the first target CCE set employ the same precoding manner and/or the same precoding.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the first configuration information is control resource set configuration information.

In a fifth aspect, a communication device is provided, which has the function of implementing the terminal equipment in the method design of the first aspect. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a sixth aspect, a communication device is provided, which has the function of implementing the network equipment (e.g. base station) in the method design of the second aspect. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a seventh aspect, a terminal device is provided that includes a transceiver and a processor. Optionally, the terminal device further comprises a memory. The processor is configured to control the transceiver to transceive signals, the memory is configured to store a computer program, and the processor is configured to call and execute the computer program from the memory, so that the terminal device performs the method of the first aspect or any one of the possible implementation manners of the first aspect.

In an eighth aspect, a network device is provided that includes a transceiver and a processor. Optionally, the network device further comprises a memory. The processor is configured to control the transceiver to transmit and receive signals, the memory is configured to store a computer program, and the processor is configured to call and execute the computer program from the memory, so that the network device performs the method of the second aspect or any one of the possible implementation manners of the second aspect.

In a ninth aspect, a communication system is provided, which comprises the terminal device of the third aspect and the network device of the fourth aspect.

In a tenth aspect, a communication apparatus is provided, which may be a terminal device designed in the above method, or a chip provided in the terminal device. The communication device includes: a processor, coupled to the memory, and configured to execute the instructions in the memory to implement the method performed by the terminal device in the first aspect or any one of the possible implementation manners of the first aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

When the communication device is a terminal device, the communication interface may be a transceiver, or an input/output interface.

When the communication device is a chip configured in a terminal device, the communication interface may be an input/output interface.

Alternatively, the transceiver may be a transmit-receive circuit. Alternatively, the input/output interface may be an input/output circuit.

In an eleventh aspect, a communication apparatus is provided, which may be a network device designed for the method described above, or a chip provided in the network device. The communication device includes: a processor, coupled to the memory, and configured to execute the instructions in the memory to implement the method performed by the network device in the second aspect or any one of the possible implementations of the second aspect. Optionally, the communication device further comprises a memory. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

When the communication device is a network device, the communication interface may be a transceiver, or an input/output interface.

When the communication device is a chip configured in a network device, the communication interface may be an input/output interface.

Alternatively, the transceiver may be a transmit-receive circuit. Alternatively, the input/output interface may be an input/output circuit.

In a twelfth aspect, there is provided a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of the above-mentioned aspects.

In a thirteenth aspect, a computer-readable storage medium is provided, which stores program code, which, when run on a computer, causes the computer to perform the method in the above-mentioned aspects.

Drawings

Fig. 1 is a schematic architecture diagram of a mobile communication system suitable for use in the embodiments of the present application.

Fig. 2 is a diagram illustrating an example of REG and REG bundle.

Fig. 3 is a diagram illustrating an example of mapping between CCEs and REGs.

Fig. 4 is a schematic diagram of an example of resources for carrying DMRS.

Fig. 5 is a diagram illustrating coding of DMRS.

Fig. 6 is a schematic interaction diagram of an example of a method for transmitting information according to an embodiment of the present application.

Fig. 7 is a schematic diagram illustrating an example of control resource set partitioning according to an embodiment of the present application.

Fig. 8 is a schematic diagram illustrating division of a control resource set according to another embodiment of the present application.

Fig. 9 is a schematic diagram illustrating division of a control resource set according to another embodiment of the present application.

Fig. 10 is a schematic interaction diagram of another method for transmitting information provided by the embodiment of the present application.

Fig. 11 is a schematic diagram illustrating another example of dividing a control resource set according to an embodiment of the present application.

Fig. 12 is a schematic diagram illustrating another example of dividing a control resource set according to an embodiment of the present application.

Fig. 13 is a schematic diagram illustrating another example of dividing a control resource set according to an embodiment of the present application.

Fig. 14 is a schematic diagram illustrating another example of dividing a control resource set according to an embodiment of the present application.

Fig. 15 is a schematic block diagram of an apparatus for determining resources according to an embodiment of the present application.

Fig. 16 is a schematic block diagram of an apparatus for determining resources according to another embodiment of the present application.

Fig. 17 is a schematic structural diagram of an example of a terminal device according to an embodiment of the present application.

Fig. 18 is a schematic structural diagram of an example network device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a fifth generation (5th generation, 5G) mobile communication system, a New Radio (NR) communication system, a future mobile communication system, and the like.

Fig. 1 is a schematic architecture diagram of a mobile communication system suitable for use in the embodiments of the present application. As shown in fig. 1, the wireless communication system may include at least one network device 101, where the network device 101 communicates with one or more terminal devices (e.g., terminal device 102 and terminal device 103 shown in fig. 1). When the network device sends a signal, the network device is a transmitting end, and the terminal device is a receiving end. Otherwise, when the terminal device sends a signal, the terminal device is a transmitting end, and the network device is a receiving end.

The terminal equipment may be fixed or mobile. Fig. 1 is a schematic diagram, and other network devices, such as a wireless relay device and a wireless backhaul device, may also be included in the communication system, which are not shown in fig. 1. The embodiments of the present application do not limit the kinds and the numbers of the network devices and the terminal devices included in the mobile communication system.

In the mobile communication system 100, a terminal device wirelessly accesses a network device in the mobile communication system. The network device 101 may be: a base station, an evolved node B (eNB), a home base station, an Access Point (AP), a wireless relay node, a wireless backhaul node, a Transmission Point (TP), a Transmission and Reception Point (TRP) in a wireless fidelity (WIFI) system, and the like, and may also be a gNB in an NR system, or may also be a component or a part of a device constituting the base station, such as a Central Unit (CU), a Distributed Unit (DU), or a baseband unit (BBU). It should be understood that, in the embodiments of the present application, the specific technology and the specific device form adopted by the network device are not limited. In this application, if not specifically stated, the network device refers to a radio access network device in this application. In this application, the network device may refer to the network device itself, or may be a chip applied to the network device to complete a wireless communication processing function.

The terminal equipment in the mobile communication system 100 may also be referred to as a terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and the like. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, or a wireless terminal applied to Virtual Reality (VR), Augmented Reality (AR), industrial control (industrial control), unmanned driving (self driving), remote medical (remote medical), smart grid (smart grid), transportation safety (transportation safety), smart city (smart city), and smart home (smart home). The terminal device and the chip applicable to the terminal device are collectively referred to as a terminal device in the present application. It should be understood that the embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.

The embodiments of the present application may be applicable to downlink data transmission, may also be applicable to uplink data transmission, and may also be applicable to device-to-device (D2D) data transmission. For downlink data transmission, the sending device of the data is a network device, the receiving device of the data is a terminal device, and after receiving the downlink data, the terminal device sends feedback information to the network device to inform the network device whether the downlink data is correctly received by the terminal device. For uplink data transmission, the sending device of data is a terminal device, the receiving device of data is a network device, and after receiving the uplink data, the network device sends feedback information to the terminal device to notify the terminal device whether the uplink data is correctly received by the network device. For the signal transmission of D2D, the sending device of data is a terminal device, and the receiving device of data is also a terminal device. The embodiment of the present application does not limit the direction of data transmission.

It should be understood that the manner, the case, the category, and the division of the embodiments are only for convenience of description and should not be construed as a particular limitation, and features in various manners, the category, the case, and the embodiments may be combined without contradiction.

It should also be understood that "first", "second", and "third" in the embodiments of the present application are merely for distinction and should not constitute any limitation to the present application. For example, "first configuration information" and "second configuration information" in this embodiment indicate different configuration information that the base station sends for the terminal device; for another example, "first instruction information" and "second instruction information" in the embodiments of the present application indicate information including different contents or different functions.

It should also be understood that, in the various embodiments of the present application, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the inherent logic of the processes, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It should be further noted that, in the embodiment of the present application, "preset" or "predefined" may be implemented by saving a corresponding code, table, or other means that can be used to indicate related information in advance in a device (for example, including a terminal device and a network device), for example, a predefined timeslot pattern in the embodiment of the present application may be a timeslot configuration manner specified in a standard, and the specific implementation manner of the present application is not limited in the present application.

It should be further noted that "and/or" describes an association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The technical solution provided by the present application will be described in detail below with reference to the accompanying drawings.

In order to facilitate understanding of the embodiments of the present application, a brief description of several concepts involved in the present application is provided below.

1. Time slot and time domain symbol (symbol)

A time slot may be understood as a particular "time unit" or "time interval".

In the embodiments of the present application, the symbol is also referred to as a time domain symbol, and may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, or a single carrier frequency division multiple access (SC-FDMA) symbol, where SC-FDMA is also referred to as an OFDM with transform precoding orthogonal frequency division multiplexing (OFDM with TP), which is not limited in the embodiments of the present application.

Illustratively, for a frame structure of an NR Frequency Division Duplex (FDD) mode, the frame length is 10ms, each frame contains 10 subframes, for example, 30KHz subcarriers, and each frame contains 20 slots. Each subframe has two slots, each slot being 0.5ms, containing 14 OFDM symbols. There may be several resource blocks per slot of NR, each resource block containing a number of subcarriers.

For a frame structure of an NR Time Division Duplex (TDD) mode, a frame has a length of 10ms, and includes 10 subframes having a length of 1ms, and each frame includes 20 slots, taking a 30KHz subcarrier as an example. Each subframe has two slots, each slot being 0.5ms, containing 14 OFDM symbols. Therefore, the entire 10ms frame can be understood as being divided into several slots as a unit of data scheduling and transmission, i.e., Transmission Time Interval (TTI). It should be understood that the embodiments of the present application do not limit the frame structure.

It should be understood that for different carriers in the NR, the different carriers may correspond to different reference subcarrier spacing (SCS), e.g., 15KHz, 30KHz, 60KHz, etc. One subframe includes different slot numbers for different reference subcarrier intervals, and each subframe may include 1 slot for a 15KHz SCS carrier; for a carrier with 30KHz SCS, each subframe may include 2 slots; for a carrier with 60KHz SCS, each subframe may include 4 slots. Wherein, each slot of different SCS carriers may include 14 symbols (symbols), which is not described herein.

2. Physical resource block

A Physical Resource Block (PRB) may occupy 12 consecutive subcarriers in the frequency domain.

3. Controlling resource collections

In the current standard, a terminal device blindly detects a Physical Downlink Control Channel (PDCCH) in a control resource set (core set). A CORESET can be understood as a physical time-frequency resource, which occupies several PRBs in the frequency domain and several symbols in the time domain. In the prior art, the number of symbols occupied by one CORESET in the time domain is 1-3.

In the description of the embodiments of the present application, 3 symbol numbers occupied by one CORESET in the time domain will be taken as an example for explanation.

4. Resource element group and resource element group binding

A Resource Element Group (REG) is P consecutive subcarriers occupied in a frequency domain, and resources occupied in a time domain are Q consecutive OFDM symbols. Wherein P is a natural number greater than 1. For example, one resource element group may occupy 12 consecutive subcarriers in the frequency domain and 1 OFDM symbol in the time domain, where P is 12 and Q is 1.

Within a CORESET, one Resource Block (RB) on each symbol is called a Resource Element Group (REG). Several REGs may constitute a 1 resource element group bundle (REG bundle), otherwise referred to as a "REG bundle". Wherein, one REG bundle may include 2, or 3, or 6 REGs. It should be understood that both REG and REG bundle are physical concepts.

Fig. 2 is a diagram illustrating an example of REG and REG bundle. As shown in fig. 2 (a), taking the number of 3 symbols occupied by one CORESET in the time domain as an example, the hatched REG bundle 1 may include 6 REGs, and REG bundle 2 may include 3 REGs. Alternatively, as shown in fig. 2 (b), taking 2 symbol numbers occupied by one CORESET in the time domain as an example, REG bundle 3 may include 6 REGs, and REG bundle 4 may include 2 REGs.

It should be understood that fig. 2 is only a possible schematic diagram, and the size of the REG bundle is fixed and unchanged within the same CORESET, for example, for the diagram (a) in fig. 2, the REG bundle 1 including only 6 REGs or the REG bundle 2 including only 6 REGs within the same CORESET, which is not limited in the embodiment of the present application.

5. Candidate control channel

One candidate control channel (PDCCH candidate) may be composed of one or more consecutive Control Channel Elements (CCEs), and a plurality of PDCCH candidates may constitute a candidate control channel set.

6. Search space

In NR, a terminal device listens to a set of candidate control channels, referred to as Search Space (SS) of the terminal device, at a non-DRX slot.

The base station sends the search space configuration information to the terminal equipment, and the terminal equipment can perform blind detection in the whole search space according to the search space configuration information and decode the PDCCH. The search space of each terminal device for blindly detecting the PDCCH is associated with a specific CORESET, and the search space configuration information indicates the period and resource information of the CORESET, and specifies how the terminal device searches the candidate PDCCH set and the position of the candidate PDCCH set.

Illustratively, each Search Space (SS) may be associated with a CORESET ID, and different search space configuration information in the NR may be implemented through higher layer parameter signaling. For example, the search space configuration information may include: the symbol position monitored by PDCCH, the number of blind detection PDCCH candidates at each CCE level, Downlink Control Information (DCI) format of search space blind detection, and the like.

Specifically, when the terminal device blindly detects the PDCCH in the CORESET, it actually monitors several PDCCH candidates in the CORESET, that is, the terminal device detects whether there is a PDCCH sent to the terminal device on each PDCCH candidate in the several PDCCH candidates.

7. Grade of polymerization

Aggregation Level (AL) may be understood as the number of CCEs included in a candidate control channel, i.e. one PDCCH candidate occupies K consecutive CCEs, where K is the aggregation level of the PDCCH candidate.

If the number of CCEs included in a candidate control channel (PDCCH candidate) is K, the aggregation level of the candidate control channel is referred to as K, where K is a positive integer greater than or equal to 1, and for example, K may be 1, 2, 4, 8, and 16. For example, if one PDCCH candidate occupies 4 consecutive CCEs, it means that the aggregation level of the PDCCH candidate is 4.

8. Mapping of CCEs to REGs

As described in fig. 2, REG is a physical concept, and CCE is a logical concept, and by introducing the concept of CCE, PDCCH candidate can be defined conveniently. However, the PDCCH will eventually occupy some physical resources, so there may be a layer of mapping relationship between the logical concept of CCE and the physical concept of REG bundle.

Specifically, 1 CCE may correspond to 6 REGs. In addition, one REG bundle may contain 2 or 3 or 6 REGs, so 1 CCE may correspond to 3 or 2 or 1 REG bundle. Specifically, the REG bundle included in CCE j is { f (6j/L), f (6j/L +1),.. and f (6j/L +1/L-1) }, where L is the REG bundle size, i.e., the number of REGs included in the REG bundle.

Fig. 3 is a diagram illustrating an example of mapping between CCEs and REGs. As shown in fig. 3 (a), in the case where one CCE corresponds to 2 REG bundles and 1 REG bundle includes 3 REGs, the CCE0 to CCE 5 are shown in fig. 3 (a). If AL of PDCCH candidate for blind detection by the terminal device is 2, CCE0 and CCE 1 shown by hatching in the diagram (a) in fig. 3 constitute one PDCCH candidate.

In the process of mapping CCEs to REGs, there may be two mapping manners: non-interleaved mapping and interleaved mapping. For a PDCCH candidate with one AL ═ 2 formed by CCE0 and CCE 1, fig. 3 (a) shows a non-interleaving mapping scheme and fig. 3 (b) shows an interleaving mapping scheme, and the interleaving mapping scheme is not described again here.

9. Channel estimation

In the embodiment of the present application, a process of a terminal device performing channel estimation using a demodulation reference signal (DMRS) is described as an example.

Specifically, before acquiring DCI, the terminal device may acquire a DMRS corresponding to a candidate control channel (PDCCH candidate), and the terminal device may demodulate the candidate control channel (PDCCH candidate) by using the DMRS. For example, the terminal device may estimate a channel estimation value (or referred to as a "channel matrix") of a channel state on a time-frequency resource where a candidate control channel (PDCCH candidate) is located by using the DMRS, and further demodulate the candidate control channel (PDCCH candidate) to accurately receive the DCI.

Fig. 4 is a schematic diagram of an example of resources for carrying DMRS. As shown in fig. 4 (a), for CCE0, REG bundle 0 and REG bundle 1 may be included, and REG bundle 0 and REG bundle 1 respectively include 3 REGs, for example REG bundle 0 includes REG 0, REG 1 and REG 2, and REG bundle 1 includes REG 3, REG 4 and REG 5.

As shown in (b) of fig. 4, taking REG 5 as an example, one REG represents one symbol in the time domain, one RB in the frequency domain, and 1 RB contains 12 REs, where 3 REs shown by shaded parts can be used for carrying DMRSs. The terminal device may utilize DMRS for channel estimation. Specifically, the DMRS may be generated according to the following formula (1):

the scrambling code ID may be configured through a UE-level high-level signaling or a cell-level configuration, which is not limited in this embodiment. In addition, the DMRS is subjected to a precoding (precoding) procedure before being transmitted, and a precoding granularity of the DMRS in a frequency domain may be configured through high-layer signaling, for example, narrowband precoding (narrowband precoding) or wideband precoding (wideband precoding).

Fig. 5 is a schematic diagram illustrating coding of a DMRS. For the two scenarios of non-interleaved mapping and interleaved mapping shown in fig. 3, fig. 5 shows a schematic diagram of narrowband precoding, and as an example, 1, 2, 3, and 4 respectively represent different precoding codewords. It may be configured to use the same precoding within one REG bundle. For example, as shown in (a) of fig. 5, for REG bundle 0 included in CCE0, precoding codeword 1 is adopted, and REG bundle 1 adopts precoding codeword 2; for the REG bundle 2 included in the CCE 1, a precoding codeword 3 is adopted, and for the REG bundle 3, a precoding codeword 4 is adopted. Or, for the interleaving mapping scenario, as shown in (b) of fig. 5, precoding codeword 1 is adopted for REG bundle 0 included in CCE0, and precoding codeword 2 is adopted for REG bundle 6; for REG bundle 1 included in CCE 1, precoding codeword 3 is adopted, and REG bundle 7 adopts precoding codeword 4, which is not described herein again.

As introduced in the background art, for the narrowband precoding scenario introduced in fig. 5, when the terminal device performs channel estimation according to the DMRS, if the terminal device performs channel estimation according to the DMRS in one REG Bundle, the accuracy of channel estimation is low, that is, the performance of channel estimation is reduced.

In addition, in order to support the characteristics of high data rate, low time delay, high reliability and the like of the NR system, the capability of the terminal device in the NR system is strong. For example, in a common commercial frequency band, the terminal device of the NR system needs to support 4-antenna reception, support 100MHz system bandwidth, and the like, and these requirements result in high hardware cost of the terminal device of the NR system. In order to further expand the NR market and reduce the hardware cost of the terminal device, the complexity and hardware cost of the terminal device may be reduced by reducing the number of antennas of the terminal device or reducing the size of the antennas. The terminal device whose number of antennas is reduced is called a "reduced capability User Equipment (UE)", and for example, the number of antennas of the terminal device is reduced to 1 antenna or 2 antennas. With the reduction of the number of receiving antennas of the terminal device or the reduction of the antenna size, the coverage area of the downlink signal is reduced, the accuracy of estimating a channel matrix by using the existing method is reduced, and the DCI decoding fails, so that the PDCCH becomes a bottleneck of downlink coverage in some scenarios.

The embodiment of the application provides a method for transmitting information, which can improve the accuracy of channel estimation, improve the accuracy of DCI decoding and further improve the reliability of transmission. Specifically, in the embodiment of the present application, a base station 101 is taken as a network device, and a transmission process between the base station 101 and a terminal device 102 shown in fig. 1 is taken as an example, to specifically introduce the method for channel estimation in the present application.

Fig. 6 is a schematic interaction diagram of an example of a method for transmitting information according to an embodiment of the present application. It should be understood that the embodiment of the present application may be applied to the scenario shown in fig. 1, and in particular, the method 600 may be applied to the terminal device 102 or the base station 101 in the scenario. As shown in fig. 6, the method 600 includes the following:

s610, the base station 101 sends first configuration information to the terminal device 102, where the first configuration information includes first indication information, and the first indication information is used to indicate M control channel element CCE sets included in the first control resource set. Accordingly, the terminal device 102 receives the first configuration information, where M is an integer greater than or equal to 1.

Alternatively, the "first control resource set" may be understood as one CORESET, i.e. one block of physical time-frequency resources, for the terminal device 102 to blindly detect the PDCCH candidate, where the CORESET occupies several RBs in the frequency domain and occupies 1 to 3 symbols in the time domain.

It should be understood that, in one embodiment provided herein, the "first indication information" is used to instruct the terminal device 102 to divide the number of RBs occupied in the frequency domain into M CCE sets, and each CCE set may include one or more CCEs. In other words, the "first indication information" may indicate that CCEs mapped on the first control resource set may be divided into M CCE sets.

In one possible implementation manner, the first indication information may include frequency domain information and time domain information of the first control resource set, and number information N of CCEs included in each CCE set of the M CCE sets, where N is an integer greater than or equal to 1.

It should also be understood that, in the embodiments of the present application, each CCE set may be defined as a "reference signal bundling set (DMRS bundle)".

It should be understood that, in the embodiment of the present application, each CCE set may be defined as "DMRS bundle", and the number information N of CCEs included in each CCE set may be defined as "DMRS bundle size". That is, the DMRS bundle may include at least one CCE, and the number of CCEs included in the DMRS bundle is DMRS bundle size. In another embodiment provided by the present application, the first indication information may further indicate the number of DMRS bundles and the number of CCEs or an index included in the DMRS bundles.

Optionally, the first indication information in this embodiment of the application may further include frequency domain information and time domain information of the first control resource set.

In a possible implementation manner, the first configuration information is control resource set configuration information. Optionally, the first configuration information may be implemented by a Radio Resource Control (RRC) message, that is, the first indication information may be implemented by adding or multiplexing a certain indication field in the RRC message, and a specific implementation manner of the first configuration information is not limited in this embodiment of the application.

S620, the terminal device 102 determines M control channel element CCE sets included in the first control resource set according to the first indication information.

Optionally, the first indication information may include different contents, and the terminal device 102 may divide the first control resource set into M control channel element CCE sets according to the different contents included in the first indication information.

Fig. 7 is a schematic diagram illustrating an example of control resource set partitioning according to an embodiment of the present application. Fig. 7 (a) illustrates a CORESET including 3 symbols, and a number of RBs on the CORESET are divided into CCEs 0-8. In other words, CCE0-CCE8 may be mapped onto the CORESET. The terminal device may divide the 9 CCEs, namely CCE0 to CCE8, into M CCE sets according to the content included in the first indication information.

In a possible implementation manner, when the first indication information includes frequency domain information and time domain information of the CORESET, and the CCEs mapped onto the CORESET are CCEs 0 to CCEs 8, the terminal device may map the 9 CCEs onto the CORESET in a non-interleaving mapping or interleaving mapping manner. Illustratively, the diagram (a) in fig. 7 shows a schematic diagram of a non-interleaved mapping. At this time, the REG bundle to which each CCE is mapped is continuous, for example, CCE0 is mapped to REG bundle 0 and REG bundle 1. Fig. 7 (b) illustrates a schematic diagram of an interleaving mapping, in which one CCE may be mapped to a discontinuous REG bundle. For example, CCE0 may be mapped onto REG bundle 0 and REG bundle 9.

It should be understood that, in the embodiment of the present application, the number N of CCEs included in each CCE set may be the same, or the number N of CCEs included in some CCE sets may be the same, or the number N of CCEs included in each CCE set may be different, and the numerical value and the number of N are not limited in the embodiment of the present application.

For example, the first indication information may indicate only a value of one N, and DMRS bundle size is 4. For example, as shown in (c) of fig. 7, when the CCE mapped to the CORESET is CCE0-CCE 7 and the DMRS bundle size is 4, the terminal device 102 may divide the CCE0-CCE 7 included in the CORESET into DMRS bundle 1 (including CCE0-CCE 3) and DMRS bundle 2 (including CCE 4-CCE 7), that is, N may be understood as the same number of CCEs included in each DMRS bundle, that is, the DMRS bundle size of each DMRS bundle is the same, where the number of DMRS CCEs in each DMRS bundle of the CORESET is the same, and the terminal device 102 may sequentially configure each DMRS bundle starting from the first CCE (CCE 0).

Alternatively, the first indication information may indicate values of a plurality of N, for example, N1 ═ 4 and N2 ═ 5, in other words, DMRS bundle partitioned in the CORESET includes different DMRS bundle sizes. Then, as shown in (a) of fig. 7, when the CCE mapped to the CORESET is CCE0-CCE8, and N1-4 and N2-5 are included in the DMRS bundle size, the terminal device 102 may divide the CCE0-CCE8 included in the CORESET into DMRS bundle 1 (including CCE0-CCE 3) and DMRS bundle 2 (including CCE 4-CCE 8), and so on, that is, the number of CCEs included in each DMRS bundle may be different.

In another possible implementation manner, the first indication information may include index information of CCEs included in each of the M CCE sets.

Illustratively, the first indication information includes CCE index information for each CCE set. For example, the first indication information indicates that DMRS bundle 1 includes CCE0, CCE 1, CCE 2, and CCE3, and DMRS bundle 2 includes CCE 4, CCE 5, CCE 6, CCE 7, and CCE8, where 0 to 8 may be regarded as index values of CCEs. As shown in fig. 7 (a), after receiving the first indication information, the terminal device 102 may divide the CCEs mapped to the CORESET into DMRS bundle 1 and DMRS bundle 2, and then map the CCEs to REG bundles in a non-interleaved manner. It can be understood that the terminal device 102 may also map the CCE to the REG bundle first, and then divide the CCE into different DMRS bundles. At this time, one CORESET may be divided into two DMRS bundles. It should be understood that, in the embodiment of the present application, the sequence of the steps executed by the terminal device to partition the DMRS bundle is not limited.

The above lists different contents that the first indication information may include, and the method for the terminal device 102 to divide the CORESET according to the different contents, the configuration manner of the method is flexible, and when the number of CCEs included in each DMRS bundle is the same, the signaling overhead can be reduced.

S630, the base station 101 transmits control information to the terminal apparatus 102.

S640, the terminal device 102 determines a first candidate control channel, where the first candidate control channel includes K CCEs, and K is an integer greater than or equal to 1.

In the embodiment of the present application, K may be understood as an aggregation level AL of PDCCH candidate. In the process of blind detection of PDCCH candidate by the terminal apparatus 102, the number of CCEs included in each PDCCH candidate is determined according to the value of AL, for example, AL is 1, 2, 4, 8, and 16.

For example, as shown in (a) of fig. 7, when AL is 2, the terminal device 102 may use CCE0 and CCE 1 shown by hatching as one PDCCH candidate, and similarly, CCE 2 and CCE3 as another PDCCH candidate, and so on, and the CORESET may include a plurality of PDCCH candidates to be detected. In the description of the embodiment of the present application, an example in which one PDCCH candidate includes 2 CCEs will be described.

S650, in the M CCE sets, the terminal device 102 determines a first target CCE set where the K CCEs are located.

Optionally, in this embodiment of the present application, the first target CCE set may be one or more sets of M CCE sets divided over the CORESET. For example, the first target CCE set may be any one CCE set of the M CCE sets, or the first target CCE set may be at least two CCE sets of the M CCE sets, which is not limited in this embodiment of the present application.

Illustratively, as shown in the partitioning manner in fig. 7 (a), if the first candidate control channel includes hatched CCE0 and CCE 1, according to S650, the first target CCE set where the CCE0 and the CCE 1 are located is DMRS bundle 1, in other words, the first target CCE set where the first candidate control channel is located is DMRS bundle 1.

Fig. 8 is a schematic diagram illustrating division of a control resource set according to another embodiment of the present application. Exemplarily, as shown in (a) of fig. 8, if the terminal device 102 divides CCEs mapped to the CORESET into DMRS bundle 1, DMRS bundle 2, and DMRS bundle 3. In addition, the terminal device determines that the first candidate control channel to be detected includes the CCE 2 and the CCE3 shown in a shaded manner, then according to S650, the terminal device 102 determines that the target set where the CCE 2 is located is DMRS bundle 1, and the target set where the CCE3 is located is DMRS bundle 2, in other words, the first target CCE set where the first candidate control channel is located includes DMRS bundle 1 and DMRS bundle 2.

It should be understood that, fig. 8 (a) illustrates a possible scenario when the CCE and the REG are in non-interleaved mapping, and similarly, when the CCE and the REG are in interleaved mapping, a possible dividing manner of the CCE mapped to the CORESET may be shown in fig. 8 (b), and for the CCE 2 and the CCE3 included in the first candidate control channel, the corresponding first target CCE sets are likewise DMRS bundle 1 and DMRS bundle 2, which is not described herein again.

S660, the terminal device 102 receives the control information sent by the base station 101 on the first candidate control channel according to the reference signal corresponding to the first target CCE set.

Alternatively, the control information transmitted by the base station 101 to the terminal apparatus 102 may be DCI. Before acquiring the DCI, the terminal apparatus 102 may acquire a DMRS corresponding to a downlink candidate control channel (PDCCH candidate) and demodulate the downlink candidate control channel (PDCCH candidate) by using the DMRS. Specifically, the terminal device 102 may estimate a channel matrix H of a downlink candidate control channel (PDCCH candidate) by using the DMRS, and demodulate the DCI by using the H to accurately receive the DCI.

It should be understood that, in the embodiment of the present application, the terminal device 102 may perform estimation by using all available reference signals in the first target CCE set in the process of estimating the channel matrix H.

It should also be understood that the terminal device 102 may accurately know the precoding manner of the DMRS sent by the base station 101, and in this embodiment of the application, "all available reference signals" in the first target CCE set may be understood as reference signals having the same precoding manner as that on the first candidate control channel to be detected.

In a possible implementation manner, the base station 101 may add, to the first configuration information, second indication information, where the second indication information is used to indicate precoding manners of the reference signals corresponding to the M CCE sets, in other words, the second indication information is used to tell the terminal device 102 about precoding manners of the DMRSs corresponding to different CCEs.

It should be understood that the precoding manners of the DMRSs may include precoding granularity (precoder), or precoding code words, and in this embodiment, the arabic numbers 1, 2, 3, and 4 may represent different precoding code words, and the precoding code words 1, 2, 3, and 4 may represent different precoding manners of the DMRSs.

It should also be understood that, in the embodiment of the present application, the second indication information may only configure the precoding manner, or only configure the precoding granularity, and does not specifically indicate the codebook of precoding. Specifically, in the embodiment of the present application, the arabic numerals 1, 2, 3, and 4 represent different codewords, and are only used for describing the precoding manner and granularity. In other words, the REG Bundle marked as 1 uses the same precoding codeword, and the terminal device may not need to know a specific value (i.e., a codebook) of the precoding codeword, which is not limited in this embodiment of the present application. In subsequent embodiments or figures, the DMRSs of the REG Bundle, labeled 1, have the same precoding codeword, and the DMRSs of the REG Bundle, labeled 2, have the same precoding codeword.

It should also be understood that, in conjunction with the aforementioned introduced formula (1), the base station 101 may configure N during the generation of the DMRS_IDAnd precoding means, e.g. N within a cell_IDAre configured identically, orConfiguring same N for certain type of terminal equipment_IDOr a certain group of terminal devices are configured with the same N_IDThe present embodiment is not limited to this.

Specifically, for the process of S660, the terminal device 102 may determine, according to the precoding manner indicated by the second indication information, a target reference signal that is the same as the precoding manner of the reference signals corresponding to the K CCEs in the reference signals corresponding to the first target CCE set, and receive, according to the target reference signal, the control information sent by the network device on the first candidate control channel.

Optionally, the precoding manner indicated by the second indication information includes any one of the following possible cases:

(1) all DMRSs corresponding to the M CCE sets adopt the same precoding.

Illustratively, in combination with the CORESET partitioning manner shown in fig. 7 (a), the CORESET includes DMRS bundle 1 and DMRS bundle 2. According to this case (1), all DMRSs included in the CORESET use the same precoding codeword, in other words, all DMRSs of DMRS bundle 1 and DMRS bundle 2 use the same precoding codeword. For example, all DMRSs corresponding to CCEs 0-CCE8 may be labeled as precoding codeword 1. According to the method 600, the terminal device 102 may estimate the channel matrix H of the first candidate control channel using all DMRSs of CCE0 to CCE3 in DMRS bundle 1.

(2) The DMRS corresponding to each CCE set in the M CCE sets adopts the same precoding.

For example, in combination with the CORESET partitioning manner shown in fig. 7 (a), the DMRSs corresponding to the DMRSs bundle 1 included in the CORESET may use the same precoding codeword 1, and the DMRSs corresponding to the DMRSs bundle 2 may use the same precoding codeword 2. The terminal device 102 may estimate the channel matrix H of the first candidate control channel using all DMRSs of CCE0 to CCE3 in DMRS bundle 1.

(3) The DMRSs corresponding to each resource element group bundle included in each CCE use the same precoding, and the DMRSs of the resource element group bundles corresponding to any two CCEs use the same precoding.

It should be understood that "corresponding resource element group bundles on two CCEs" may be understood herein as the same precoding employed by the DMRS of the first REG bundle of each CCE, the same precoding employed by the DMRS of the second REG bundle of each CCE, and so on.

For example, as shown in fig. 7 (a), the DMRSs bundle 1 included in the CORESET may employ the same precoding codeword 1 for the DMRSs corresponding to the REG bundle 0 of the CCE0, the DMRSs corresponding to the REG bundle 1 of the CCE0 may employ the same precoding codeword 2, the DMRSs corresponding to the REG bundle 2 of the CCE 1 may employ the same precoding codeword 1, and the DMRSs corresponding to the REG bundle 3 of the CCE 1 may employ the same precoding codeword 2. In other words, DMRSs of the first REG bundle (REG bundle 0) of the CCE0 and the first REG bundle (REG bundle 2) of the CCE 1 may employ the same precoding codeword 1, and DMRSs of the second REG bundle (REG bundle 1) of the CCE0 and the second REG bundle (REG bundle 3) of the CCE 1 may employ the same precoding codeword 2. In the same rule, CCE 2 and CCE3 in DMRS bundle 1 also have the rule of precoding codewords shown in (a) of fig. 7, and are not described herein again.

For the scenario shown in fig. 7 (a), the terminal device 102 may jointly estimate the REG bundle 0 and REG bundle 2 channel matrices of the first candidate control channel by using all DMRSs labeled as precoded codewords 1 in DMRS bundle 1, and jointly estimate the REG bundle 1 and REG bundle 3 channel matrices of the first candidate control channel by using all DMRSs labeled as precoded codewords 2 in DMRS bundle 1.

With the joint estimation procedure introduced above, as shown in (a) of fig. 7, if the first candidate control channel includes CCE0 and CCE 1 shown by hatching, the terminal device 102 may perform joint estimation using all available DMRSs in DMRS bundle 1. In other words, the terminal device 102 may jointly estimate the channel matrix using all available DMRSs in CCE0, CCE 1, CCE 2, and CCE 3.

Or, in another possible case, the two CCEs included in the first candidate control channel may be located in two different sets of CCEs, or the two CCEs included in the first candidate control channel are respectively included in two different DMRS bundle.

Illustratively, as shown in (a) of fig. 8, if the first candidate control channel includes CCE 2 and CCE3 shown by hatching, the terminal device 102 may jointly estimate a channel matrix of CCE 2 using DMRS in DMRS bundle 1 and estimate a channel matrix of CCE3 using DMRS in DMRS bundle 2. It should be understood that the precoding codewords of the DMRSs in the joint estimation process are the same, and reference is made to the foregoing description related to the precoding codewords, which is not described herein again.

According to the scheme, the CCEs mapped to the CORESET are divided into different DMRS bundles, and more DMRSs in one DMRS bundleare used for joint channel estimation, so that the channel estimation performance is better, and the accuracy of channel estimation is improved. In addition, in a specific channel estimation process, the terminal device may flexibly select the target reference signal according to different precoding modes in the DMRS bundle, that is, select the target reference signal having the same precoding mode as that of the reference signal on the first candidate control channel to be detected for channel estimation, so that the flexibility of the channel estimation process of the terminal device is improved.

In the implementation process, the first configuration information may be control resource set configuration information.

Optionally, the first indication information and the second indication information may be different indication fields added in the control resource set configuration information; or the first indication information and the second indication information multiplex the same indication field in the control resource set configuration information, and implicitly indicate different contents; or, the first indication information and the second indication information are the same indication fields added in the control resource set configuration information, and implicitly indicate different contents, and the embodiment of the present application does not limit the specific configuration manner of the first indication information and the second indication information.

It should be understood that the above method may be used for one type of terminal device, or one terminal device, or different types of terminal devices, and that terminal device 102 may perform channel estimation through the above procedure on the CORESET within one or more slots. With reference to the method 600, two possible implementation processes of channel estimation in the same CORESET in the same slot are introduced below for different scenarios.

Scene one: sharing DMRS bundle in CORESET for channel estimation

Different types of terminal equipment, such as the redcap UE introduced above, or other terminal equipment, referred to as "legacy UEs," may be included in a CORESET. In this scenario one, redcap UE and legacy UE may share the same DMRS bundle partitioning manner.

In a possible implementation manner, the base station 101 defines DMRS bundle sizes, that is, defines the number of CCEs included in each DMRS bundle, through the first indication information introduced in the foregoing manner similar to the manner of defining the aggregation level AL to the terminal device 102. Meanwhile, the base station 101 may also define a precoding manner in the DMRS bundle through the aforementioned second indication information.

Optionally, for the same slot, in a scenario with 1 core, for example, if the core ID is equal to X, the first indication information is only one value if DMRS bundle size is defined, that is, the partitioning manner of all DMRS bundles in the core is implicitly defined. With reference to the diagram (a) in fig. 8, if the first indication information indicates that the DRMS bundle size is 3 CCEs, that is, CCE0 to CCE 2 are one DMRS bundle 1, CCE3 to CCE 5 are one DMRS bundle 2, and CCE 6 to CCE8 are one DMRS bundle 3; meanwhile, the base station may indicate the precoding manner in the DRMS bundle through the second indication information, and the different precoding manners may refer to the foregoing related introduction, for example, the precoding manners of each corresponding REG bundle or each DMRS bundle are the same, and are not described herein again.

Illustratively, for the process shown in (a) of fig. 8, table 1 lists one possible content included in the first configuration information.

TABLE 1

One possible code implementation procedure of the first indication information is as follows:

one possible code implementation of the second indication information is as follows:

Precoder Granularity

ENUMERATED{sameAsREG-bundle,allContiguousRBs,sameAsDmrs-Bundle}

when the terminal equipment carries out channel estimation, the DMRS with the same precoding code words in the defined DMRS bundle can be used for carrying out joint channel estimation, the channel estimation performance is better, the accuracy of the channel estimation is improved, the frequency gain is improved, and the coverage of the PDCCH is enhanced. In addition, in a specific implementation process, if other CCEs except for the CCE in the target DMRS bundle are not divided into other DMRS bundles, the precoding manner of the DMRS may not be limited, and the limitation on the base station may be reduced.

Optionally, the first configuration information may be implemented by Radio Resource Control (RRC) messages, that is, the first indication information and the second indication information may be implemented by adding or multiplexing an indication field in the RRC messages, which is not described herein again in this embodiment.

Scene two: different terminal devices can use different DMRS (demodulation reference signal) bundles for channel estimation

It should be understood that in the existing PDCCH enhancement mode, different numbers of symbols can be allocated to different types of terminal devices for transmitting DCI on one CORESET. For example, for the redcap UE described above, the number of symbols included in the enlarged CORESET may be the same as or different from the CCE of the CORESET of the original legacy UE.

In a possible implementation manner, after the number of symbols is enlarged, the CCE of the CORESET of the redcap UE may be numbered in a unified manner with the CCE of the CORESET of the legacy UE. When the enlarged symbols are numbered continuously, it can be understood that the CORESET ID is not changed, i.e., the CORESET ID is not changed.

Optionally, the base station 101 defines DMRS bundle size, that is, defines the number of CCEs included in each DMRS bundle, by transmitting different first indication information to legacy UE and redcap UE, respectively, in a similar manner to defining the aggregation level AL to the terminal device 102. In addition, different second indication information is sent to legacy UEs and redcap UEs, so that a precoding mode in the DMRS bundle is defined.

Fig. 9 is a schematic diagram illustrating division of a control resource set according to another embodiment of the present application. Illustratively, as shown in (a) of fig. 9, if the CORESET of legacy UE can occupy 3 symbols, such as symbols 1-3 shown on the left side of the black bold line. After enlarging the number of symbols, the CORESET of the redcap UE may occupy 6 symbols, symbol 1-symbol 3 as shown on the left side of the bold black line and symbol 4-symbol 6 as shown on the right side of the bold black line. In other words, for legacy UEs, only the resources of symbol 1-symbol 3 to the left of the solid black line are detected in the same CORESET, and for redcap UEs, the resources of symbol 1-symbol 6 can be detected in the same CORESET.

For example, the base station 101 may configure different DMRS bundles for legacy UEs and redcap UEs through different first indication information, for example, DMRS bundle size ═ 4. As shown in (a) of fig. 9, for legacy UEs, CCE0-CCE 3 is DMRS bundle 1, and CCE 4-CCE 7 is DMRS bundle 2; as shown in (b) of fig. 9, for redcap UE, CCE0, CCE 1, CCE 9 and CCE 10 are DMRS bundle 1, and CCE 2, CCE3, CCE 11 and CCE 12 are DMRS bundle 2. For example, the precoding manners of each corresponding REG bundle or each DMRS bundle are the same, and are not described herein again.

For example, in combination with the content of the first configuration information listed in table 1, in the second scenario, the base station 101 may configure different first configuration information for legacy UE and redcap UE, which is not described herein again.

According to the method 600 provided in this embodiment of the present application, when the terminal device 102 performs joint channel estimation, if AL of the first candidate control channel is 2, for legacy UE, as shown in (a) of fig. 9, the first candidate control channel includes CCE0 and CCE 1 shown in shaded, and the terminal device 102 may perform joint channel estimation through DMRSs of CCE0 to CCE3 of DMRS bundle 1, determine a channel matrix of the first candidate control channel, and further decode DCI.

For redcap UE, as shown in (b) of fig. 9, the first candidate control channel includes hatched CCE0 and CCE 9, and the terminal device 102 may perform joint channel estimation through DMRSs of CCE0, CCE 1, CCE 9, and CCE 10 of DMRS bundle 1, determine a channel matrix of the first candidate control channel, and further decode DCI.

Optionally, when the DMRS bundle size is defined by the first indication information, different DMRS bundle sizes may be configured for a legacy UE and a redcap UE, for example, the legacy UE is configured with the DMRS bundle size of 2, and the redcap UE is configured with the DMRS bundle size of 4, which is not limited in this embodiment of the application.

Optionally, the implementation process of signaling such as configuration information may refer to the foregoing description, and is not described herein again.

By the method, different DMRS bundle sizes can be configured for different types of terminal equipment, and when the terminal equipment carries out channel estimation, all defined DMRSs with the same precoding mode in one DMRS bundle are used for carrying out joint channel estimation, so that the channel estimation performance is better, the accuracy of channel estimation is improved, the frequency gain is improved, and the coverage of the PDCCH is enhanced. In addition, for the same physical resource, the restriction on legacy UEs is further reduced.

In yet another possible implementation manner, after the number of symbols is enlarged, the CCE of the CORESET of the redcap UE may be renumbered with the CCE of the CORESET of the legacy UE. When renumbering, it can be understood that the CORESET ID changes, that is, the CORESET ID changes, and this case will be described in detail later with reference to other embodiments.

In summary, with reference to the method 600 in fig. 6 and the schematic diagrams in fig. 7 to fig. 9, a partitioning manner of DMRS bundles within the same CORESET and a process of a terminal device performing joint channel estimation by using DMRS within the DMRS bundles are described, and besides, joint channel estimation may be performed on a PDCCH candidate based on different DMRS bundles between different CORESETs.

It should be understood that, based on the method 600 shown in fig. 6, the base station may configure association (linking) relationships between different DMRS bundles on different CORESET for the terminal device, so that the terminal device may perform joint channel estimation with DMRSs corresponding to different DMRS bundles having association relationships on different CORESET, and the following describes another method for transmitting information provided in the embodiments of the present application with reference to the drawings.

Fig. 10 is a schematic interaction diagram of another method for transmitting information provided by the embodiment of the present application. It should be understood that the embodiment of the present application may be applied to the scenario shown in fig. 1, and in particular, the method 1000 may be applied to the terminal device 102 or the base station 101 in the scenario.

As shown in fig. 10, the method 1000 includes the following:

s1010, the base station 101 sends first configuration information to the terminal device 102, where the first configuration information includes first indication information, and the first indication information is used to indicate M control channel element CCE sets included in the first control resource set. Accordingly, the terminal device 102 receives the first configuration information, where M is an integer greater than or equal to 1.

S1020, the terminal device 102 determines M control channel element CCE sets included in the first control resource set according to the first indication information.

S1030, the base station 101 sends second configuration information to the terminal device 102, where the second configuration information is used to indicate a second target CCE set having an association relationship with the first target CCE set.

It should be understood that the second configuration information is used to configure an association (linkage) relationship between different DMRS bundles on different CORESET, where the linkage relationship may be understood as a mapping relationship, that is, the base station 101 may indicate more DMRS bundles for the terminal device 102, so that the terminal device 102 may perform joint channel estimation according to more DMRSs.

In this embodiment of the present application, it is assumed that the terminal device 102 needs to estimate a first candidate control channel, a DMRS bundle in which a CCE included in the first candidate control channel is located is a first target CCE set, and another DMRS bundle having a certain association with the first target CCE set is a "second target CCE set" in this embodiment of the present application, and a linking relationship between the first target CCE set and the second target CCE set may be defined in a variety of different manners.

In one possible implementation, the second configuration information includes offsets of the first target CCE set and the second target CCE set, where the offsets include at least one of a time domain offset and a frequency domain offset.

Optionally, the time domain offset is a slot offset and/or a symbol offset, and the frequency domain offset is a CCE offset.

It is to be understood that the first target set of CCEs and the second target set of CCEs may be the same in frequency domain location, different in time domain location; or, the first target CCE set and the second target CCE set may have different frequency domain positions and the same time domain position; alternatively, the first target set of CCEs and the second target set of CCEs may be different in both frequency domain position and time domain position.

Specifically, the time domain information and the frequency domain information of the first target CCE aggregation are known, and the terminal device 102 may determine the time domain information and the frequency domain information of the second target CCE aggregation by configuring slot and/or symbol numbers of time domain offsets and/or CCE numbers of frequency domain offsets of the first target CCE aggregation and the second target CCE aggregation in the second configuration information, so as to determine the second target CCE aggregation.

In yet another possible implementation, the second configuration information includes mapping relationships between M CCE sets and L CCE sets, where the L CCE sets are CCE sets in a second control resource set, and the second control resource set and the first control resource set have different identities. In other words, the second configuration information may also be used to indicate an association relationship between the M sets of control channel elements CCE included in the first set of control resources and the L sets of control channel elements CCE included in the second set of control resources.

Specifically, the first control resource set may be a CORESET ID ═ X, and CCEs mapped to the CORESET may be divided into M DMRS bundle; the second set of control resources may be a CORESET ID ═ Y, and CCEs mapped to the CORESET may be divided into L DMRS bundles. In this case, the second configuration information may indicate an association relationship between M DMRS bundles in the core set having a core set ID of X and L DMRS bundles in the core set having a core set ID of Y. Wherein M may be equal to L, or M may be greater than L, or M may be less than L. In other words, 1 DMRS bundle in CORESET with CORESET ID X may be associated with 1 or more DMRS bundles in CORESET with CORESET ID Y. Specifically, after the terminal device determines the first target CCE set, according to the second configuration information, 1 or more DMRS bundles in the CORESET whose CORESET ID is Y may be used as the second target CCE set, which is not limited in this embodiment of the present invention.

S1040, the base station 101 transmits control information to the terminal apparatus 102.

S1050, the terminal device 102 determines a first candidate control channel, where the first candidate control channel includes K CCEs, and K is an integer greater than or equal to 1.

S1060, in the M CCE sets, the terminal device 102 determines a first target CCE set where the K CCEs are located.

S1070, the terminal device 102 determines a second target CCE set according to the first target CCE set and the second configuration information.

S1080, the terminal device 102 receives the control information sent by the base station 101 on the first candidate control channel according to the reference signal corresponding to the first target CCE set and the reference signal corresponding to the second target CCE set.

In the above process of S1010-S1080, the implementation manners of steps S1010-S1020, S1040-S1060 and the like may refer to the corresponding description of the method 600 in fig. 6, and for simplicity of description, details are not described herein again.

By the method, before acquiring the DCI, the terminal device 102 may acquire the DMRS estimation channel matrix H1 corresponding to the first target CCE set, acquire the DMRS estimation channel matrix H2 corresponding to the second target CCE set, and generate the channel matrix H according to H1 and H2, that is, perform channel estimation using more DMRSs, thereby improving accuracy of channel estimation. In addition, in a specific channel estimation process, the terminal device may flexibly select the target reference signal according to different precoding modes in the DMRS bundle, that is, select the target reference signal having the same precoding mode as that of the reference signal on the first candidate control channel to be detected for channel estimation, so that the flexibility of the channel estimation process of the terminal device is improved.

It should be understood that the second target CCE set and the first target CCE set may be used for scheduling of different terminal devices, but only during channel estimation, joint channel estimation is performed by using a reference signal available in the second target CCE set, and details are not described later.

For the method 1000 of fig. 10, the first target CCE set and the second target CCE set may occupy different symbols of the same time slot, and may also be located in different time slots, which introduces that the base station 101 may indicate, to the terminal device 102, an association (link) relationship between the first target CCE set and the second target CCE set through the second configuration information, that is, indicate a time domain offset and/or a frequency domain offset between the first target CCE set and the second target CCE set. It should be understood that the association (linkage) relationship may be indicated in an explicit or implicit manner, and several possible channel estimation procedures are described below for different scenarios.

Scene three: different slots share DMRS bundle in CORESET ID for joint channel estimation

In the third scenario, taking 2 slots as an example, the base station 101 may configure, for the terminal device 102, DMRS bundles associated with each other on the 2 slots, and a CORESET in which the 2 DMRS bundles are located may have the same CORESET ID.

It should be understood that, the foregoing scenario one in fig. 6 introduces a manner of related configuration of the first configuration information on each CORESET, and scenario three may add second configuration information on the basis of scenario one, to indicate another DMRS bundle (second target CCE set) associated with the DMRS bundle (first target CCE set). In the embodiment of the present application, an SS in which the first target CCE set is located may be referred to as a "scheduling SS", a core associated with the scheduling SS may be referred to as a "scheduling core", an SS in which the second target CCE set is located may be referred to as a "bundle SS", and a core associated with the bundle SS may be referred to as a "bundle core".

Optionally, when the second configuration information is search space configuration information, the second configuration information is configured in the scheduling SS and does not need to be configured in the bundle SS. In one possible implementation manner, when the core ID of the bundle core is the same as the core ID of the scheduling core, the terminal device defaults that the bundle core and the scheduling core have the same configuration, in other words, the configurations of the bundle core, the DMRS bundle of the scheduling core, the precoding manner of the DMRS bundle, and the like are the same. For example, for the configuration of scheduling CORESET in this implementation, the base station may configure the time domain offset and the frequency domain offset between the first target CCE set and the second target CCE set through the second configuration information, as shown in table 2 below.

TABLE 2

Specifically, the base station 101 configures a scheduling CORESET according to first configuration information, for example, as shown in table 1 in the foregoing scenario one, in a manner similar to defining an aggregation level AL for the terminal device 102, defines DMRS bundle size in CORESET ID ═ 0, that is, the number of CCEs included in each DMRS bundle, according to the first indication information, and defines a precoding scheme within the DMRS bundle according to the second indication information described above. In addition, in this embodiment, by adding the second configuration information, the second configuration information indicates to the terminal device that the bundle core and the scheduling core have the same core ID, and information of the time domain offset and the frequency domain offset is configured.

Fig. 11 is a schematic diagram illustrating another example of dividing a control resource set according to an embodiment of the present application. Illustratively, as shown in FIG. 11, for different slot A and slot A-B, the CORESET of slot A is the scheduling CORESET, and the CORESET of slot A-B is the bundle CORESET. For the scheduling CORESET of slot a, through the content of the first configuration information of table 1 listed in scenario one, the first indication information indicates that the scheduling CORESET has a division of DMRS bundle 1-DMRS bundle 3 as shown in the figure, and the DMRS bundle size of each DMRS bundle is 3 CCEs. And the second indication information indicates a precoding manner on the DMRS bundle, for example, DMRSs labeled as 1 in the DMRS bundle 1 have the same precoding codeword, and DMRSs labeled as 2 have the same precoding codeword.

In this scenario three, the base station may further indicate, through the second configuration information listed in table 2 above, that the core set ID of the bundle core set is X, and information of a time domain offset and a frequency domain offset between the bundle core set and the scheduling core set. For example, the frequency domain offset between the bundle core and the scheduling core is 0 CCEs, and the time domain offset is-B slots. Then, for the core set ID of slot a-B being a bundle core set, as shown in fig. 11, the core set may have the same configuration as the core set of slot a, that is, the number of CCEs included in DMRS bundle 1-1 and DMRS bundle 1, the REG bundle number of the CCEs, and the precoding granularity on the same REG bundle are all the same.

The first candidate control channel to be detected by the terminal device 102 includes the hatched CCE0 and the hatched CCE 1, at this time, the terminal device 102 may determine that a first target CCE set where the first candidate control channel includes the hatched CCE0 and the hatched CCE 1 is DMRS bundle 1, and determine to find the DMRS bundle 1-1 in the slot a-B by using the time slot number-B of the time domain offset and the DMRS bundle 1.

The terminal device 102 may perform joint channel estimation through the DMRSs with the same precoding manners as the DMRSs in the CCEs 0 to CCE3 of the DMRS bundle 1 and the DMRSs in the CCEs 0 to CCE3 of the DMRS bundle 1-1, determine a channel matrix of the first candidate control channel, and further decode the DCI.

Optionally, the second configuration information may also be implemented by an RRC message, that is, by adding or multiplexing an indication field in the RRC message. The embodiments of the present application do not limit this.

The above description has been given by taking the unit of the time domain offset as a slot (slot num) as an example, and the time domain offset may be also taken in the unit of a symbol (symbol num). Optionally, the time domain offset (slot num and/or symbol num) may be positive or negative, and when the time domain offset is negative, for example, in fig. 11, the first candidate control channel of slot a is jointly estimated by using DMRS bundle 1-1 of slot a-B and DMRS bundle 1 of slot a, which is beneficial to reducing the delay.

In another possible implementation manner, if the second configuration information does not include the information of the associated CORESET ID, the terminal device may default that the CORESET ID where the second target CCE set is located is the same as the CORESET ID where the second target CCE set is located, that is, both the CORESET ID and the CORESET ID are X, and then the second configuration information may only include a time domain offset and a frequency domain offset.

For example, for core set ID ═ X, as shown in table 3 below, one possible type of first configuration information and second configuration information may include the following.

TABLE 3

In the third scenario, the frequency domain offset is 0 CCE, which can ensure coherence between slot a-B and slot a in the time domain, and the channel estimation gain is derived from that the slot a-B and the slot a perform multi-DMRS frequency filtering separately first, and then perform time domain filtering on the multiple slots, thereby obtaining the gain of the multi-DMRS joint estimation of the frequency domain + the time domain.

By the method, when the terminal equipment carries out channel estimation, all available DMRSs in one defined DMRS bundle and the other associated cross-slot (slot) DMRS bundle can be used for carrying out joint channel estimation, the channel estimation performance is better, the accuracy of the channel estimation is improved, the frequency gain is improved, and the coverage of the PDCCH is enhanced.

Scene four: joint channel estimation by DMRS bundle in different CORESET IDs between different slots

In the fourth scenario, taking 2 slots as an example, the base station 101 may configure DMRS bundles for the terminal device 102 on the 2 slots, where the CORESET where the 2 DMRS bundles are located may have different CORESET IDs.

It should be understood that, the foregoing scenario one in fig. 6 describes a manner of related configuration of the first configuration information on each core set, and the scenario four may add the second configuration information on the basis of the scenario one, indicating "bundle core set" with different core set IDs associated with "schedule core set". Illustratively, the core ID of the scheduling core set where the first target CCE set is located is X, and the core ID of the bundle core set where the second target CCE set is located is Y.

In one possible implementation manner, for a scheduled core (core ID ═ X) and a bundle core (core ID ═ Y), the DMRS bundle of the core and the precoding scheme of the DMRS bundle may be configured through the first configuration information. In the implementation manner, for the configuration of the scheduling CORESET, the base station sends second configuration information in addition to the first configuration information sent to the terminal device, and indicates the association relationship between the scheduling CORESET and the bundle CORESET through the second configuration information.

Alternatively, the second configuration information may indicate core set ID information, time domain offset, and frequency domain offset information of the bundle core set. For example, as shown in table 4 below, specifically, the base station 101 first configures scheduling core and bundle core by using the first configuration information, and in a manner similar to defining the aggregation level AL for the terminal device 102, defines the number of DMRS bundle size 4 CCEs in core ID ═ X and Y by using the first indication information, and defines the precoding granularity within the DMRS bundle by using the aforementioned introduced second indication information. In addition, in this embodiment, by adding the second configuration information, the second configuration information indicates to the terminal device that the core ID of the bundle core is Y, and information such as the number of slots in which the time domain offset is configured, the number of CCEs in which the frequency domain offset is configured, and the like is configured.

TABLE 4

Fig. 12 is a schematic diagram illustrating another example of dividing a control resource set according to an embodiment of the present application. Illustratively, as shown in FIG. 12, for different slot A and slot A-B, the CORESET of slot A is the scheduling CORESET, and the CORESET of slot A-B is the bundle CORESET. For the scheduling CORESET of slot a, the first indication information in the first configuration information indicates that the scheduling CORESET has DMRS bundle as shown in the figure, and the second indication information indicates a precoding manner on the DMRS bundle, for example, all DMRSs of DMRS bundle 1 are marked as 1, that is, all DMRSs adopt the same precoding codeword.

In the fourth scenario, the base station may further indicate, through the second configuration information listed in table 3 above, that the core set ID of the bundle core is Y, and information of a time domain offset and a frequency domain offset between the bundle core and the scheduling core. For example, the frequency domain offset between the bundle core and the scheduling core is 4 CCEs, and the time domain offset is-B slots. Then, for the core set ID of slot a-B, as shown in fig. 12, the core set may have a configuration different from the core set ID X as a bundle core set, for example, when the core set ID X is equal, the number of occupied symbols is 2, the number of 4 CCEs included in DMRS bundle 1-1, the REG bundle number of the CCEs, and the scheduling core set are different, and the precoding granularity of all DMRSs of DMRS bundle 1 and DMRS bundle 1-1 are the same.

The first candidate control channel to be detected by the terminal device 102 includes the hatched CCE0 and the hatched CCE 1, at this time, the terminal device 102 may determine that a first target CCE set where the first candidate control channel includes the hatched CCE0 and the hatched CCE 1 is DMRS bundle 1, and determine to find the DMRS bundle 1-1 in the slot a-B by using the time slot number-B of the time domain offset and the DMRS bundle 1.

The terminal device 102 may perform joint channel estimation through the DMRSs of the CCE0 to CCE3 of the DMRS bundle 1 and all the DMRSs of the CCE 4 to CCE 7 of the DMRS bundle 1-1, determine a channel matrix of the first candidate control channel, and further decode the DCI.

In another possible implementation manner, the second configuration information may indicate SS ID information, time domain offset, and frequency domain offset information of the bundle core set. For example, as shown in table 5 below, specifically, the base station 101 first configures scheduling core and bundle core by using the first configuration information, and in a manner similar to defining the aggregation level AL for the terminal device 102, defines the number of DMRS bundle size 4 CCEs in core ID ═ X and Z by using the first indication information, and defines the precoding granularity within the DMRS bundle by using the aforementioned introduced second indication information. In addition, in this embodiment, by adding second configuration information, the second configuration information indicates to the terminal device that the SS ID of the bundle core is Z, and information such as the number of slots in which the time domain offset is configured, the number of CCEs in which the frequency domain offset is configured, and the like is configured.

TABLE 5

Specifically, if the core set associated with different SS IDs is different, and the second configuration information includes information of the SS ID, the terminal device may determine the core set ID according to the information of the SS ID, and use the core set indicated by the core set ID as the bundle core set. It should be understood that if the terminal device has no scheduling on the core set determined by the information of the SS ID, the SS determined by the different SS ID ═ Z indicated by the second configuration information is only used to determine the second target CCE set, and the terminal device does not blindly detect DCI on the SS. If the terminal device has a schedule on the CORESET determined by the SS ID information, the bundle SS ID can be directly configured through the second configuration information, which is not described herein again.

It should be understood that, for the first configuration information, the second configuration information, and the like in the other scenarios in the fourth scenario, reference is made to the foregoing description, and details are not repeated here.

By the method, when the terminal equipment carries out channel estimation, all available DMRSs in one defined DMRS bundle and the other associated cross-slot (slot) DMRS bundle can be used for carrying out joint channel estimation, the channel estimation performance is better, the accuracy of the channel estimation is improved, the frequency gain is improved, and the coverage of the PDCCH is enhanced. And when the time domain offset is negative, for example, in fig. 12, joint estimation is performed on the first candidate control channel of slot a by using DMRS bundle 1-1 of slot a-B and DMRS bundle 1 of slot a, which is beneficial to reducing time delay.

Optionally, the time domain offset and/or the frequency domain offset configured in the second configuration information may be offsets that can determine the resource location, such as CORESET and SS, which is not limited in this embodiment of the present application.

In a possible implementation manner, for a scenario where redcap UE expands CCE of core of legacy UE to renumber, for redcap UE, the expanded core may be used as a new core, or may be implemented according to different core-associated methods, and details are not repeated here.

It should be understood that, in the above scenarios three and four, it may be preferentially ensured that the frequency domain positions of the first target CCE set and the second target CCE set are the same, so that the first target CCE set and the second target CCE set are coherent in the time domain, and a larger frequency gain is achieved.

Scene five: joint channel estimation by DMRS bundle in different CORESET IDs between different slots

In order to enhance the coverage of PDCCH, base station 101 may repeatedly send the same DCI (or "PDCCH retransmission") on 2 slots, and then the terminal device may detect the DCI on 2 slots respectively, and perform joint decoding according to the DCI detected on 2 slots. In the existing PDCCH repetition scene, the terminal equipment needs to perform blind detection on the previous slot to obtain DCI; and performing blind detection on the next slot to obtain DCI, and performing joint decoding according to the DCI of the two slots to improve the accuracy of receiving the DCI and further enhance the coverage of the PDCCH. However, this process does not reduce the number of blind tests on two slots.

In a possible manner, in this scenario five, in combination with the method 1000 provided in this embodiment of the present application, the terminal device may first perform blind detection on a previous slot to determine a PDCCH candidate, and then, according to a first target CCE set where the detected PDCCH candidate is located, optionally, the second configuration information may indicate a mapping relationship between M DMRS blocks on the slot C and L DMRS blocks on the slot C + 1. In this process, the terminal device may determine, according to the first target CCE set and the mapping relationship, a second target CCE set associated in the subsequent slot, and then perform blind detection only in the second target CCE set in the subsequent slot. In other words, the terminal device only needs to perform blind detection in the previous slot, and in the next slot, only performs blind detection in the associated second target CCE set, thereby reducing the number of blind detections on other CCEs in the next slot.

Fig. 13 is a schematic diagram illustrating another example of dividing a control resource set according to an embodiment of the present application. For example, as shown in fig. 13, the first indication information indicates that the DMRS bundle size is 4 CCEs, a division manner and a range of the DMRS bundle in the slot C are determined, the base station transmits DCI in the slot C, the terminal device determines, through blind detection, that a first target CCE set where a PDCCH candidate for transmitting DCI is located is DMRS bundle 1-1, and the terminal device obtains DCI 1 transmitted on the slot C. And the terminal equipment determines the DMRS bundle 1 associated with the DMRS bundle 1-1 in the slot C +1 according to the second configuration information, detects the DCI only in the DMRS bundle 1 to obtain DCI 2, and accurately acquires the DCI according to joint decoding of the DCI 1 and the DCI 2.

It should be understood that the processes of obtaining DCI 1 and DCI 2 by decoding and obtaining DCI by the terminal device and obtaining DCI by joint decoding may have different implementation manners, which is not limited in this embodiment of the present application.

By the method, the DMRS bundle of the DCI which is blindly detected in the previous slot is determined, so that the accuracy of receiving the DCI can be improved, and the blind detection times of the terminal equipment in the next slot can be reduced.

In another possible implementation manner, the embodiment of the present application may further combine a PDCCH repetition process and a DMRS joint estimation process to enhance the coverage of the PDCCH. Specifically, in any slot, the terminal device may perform joint estimation based on more DMRSs according to the method described above in the process of blind-detecting DCI.

Specifically, similar to the manner of defining the aggregation level to the terminal device 102, DMRS bundle size, that is, the number of CCEs included in each DMRS bundle, is defined by the first indication information. Meanwhile, in this scenario five, a relationship (link) between the first target CCE set and the second target CCE set is defined. When the DMRS bundle Size and association (linkage) relationship is determined, the time-frequency resource range of PDCCH candidate for repeatedly transmitting DCI is actually determined. The terminal apparatus 102 only needs to blind-detect the DCI repeatedly transmitted in this range.

For example, taking fig. 13 as an example, in a specific implementation process, for slot C, the terminal device may perform joint channel estimation through DMRSs of CCEs 0 to CCE3 of DMRS bundle 1-1, determine a channel matrix of the first candidate control channel, and further decode DCI to obtain DCI 1. For slot C +1, the terminal equipment can perform joint channel estimation through DMRS of CCE 4-CCE 7 of DMRS bundle 1, determine a channel matrix of a first candidate control channel, and further decode DCI to obtain DCI 2. And then joint decoding is carried out by combining the DCI 1 and the DCI 2, so that more accurate DCI is obtained.

Fig. 14 is a schematic diagram illustrating another example of dividing a control resource set according to an embodiment of the present application. For example, as shown in fig. 14, the first indication information indicates that the DMRS bundle size is 4 CCEs, determines the division manner and range of the DMRS bundle in slot a and the division manner and range of the DMRS bundle in slot a-B, and the slots in which the DCI is repeatedly transmitted are CCE0 and CCE 1 of slot a and CCE 4 and CCE 5 of slot a-B.

In the implementation process, for slot A-B, terminal equipment can perform joint channel estimation through DMRS of CCE 4-CCE 7 of DMRS bundle 1-1, determine a channel matrix of a first candidate control channel, and further decode DCI to obtain DCI 1. For slot A, the terminal equipment can perform joint channel estimation through DMRSs of CCE0-CCE 3 of DMRS bundle 1, determine a channel matrix of a first candidate control channel, and further decode DCI to obtain DCI 2. And then joint decoding is carried out by combining the DCI 1 and the DCI 2, so that more accurate DCI is obtained.

It should be understood that for the joint estimation process in a slot, reference may be made to the foregoing related description, and details are not repeated here. Similarly, for the DCI sent on each slot, joint channel estimation may be performed with the associated DMRS bundle first according to the methods of scene three and scene four, and then joint decoding is performed on the repeatedly detected DCI, which is not described herein again.

By the method, when the terminal equipment carries out channel estimation, the gain of the multi-DMRS joint estimation of each frequency domain can be obtained between each time slot. If the frequency domain position of the DMRS bundle is the same as the frequency domain position of the PDCCH for sending the DCI for the first time, the channel gains of joint estimation in different time domains can be obtained between the time slots. If the frequency domain position of the DMRS bundle is far away from the frequency domain position of the PDCCH for sending the DCI for the first time, although the gain of the time domain joint channel estimation cannot be obtained, the frequency diversity gain can be obtained when the DCI is subjected to joint decoding. Therefore, in the fifth scenario, the sizes of the time domain offset and the frequency domain offset may not be limited, and even the time domain offset and the frequency domain offset may be defined as a slot-related randomized value, so that the limitation on the base station scheduling is reduced while the frequency diversity gain is obtained.

The method for transmitting information according to the embodiment of the present application is described in detail above with reference to fig. 1 to 14. Hereinafter, a resource determination device according to an embodiment of the present application will be described in detail with reference to fig. 15 to 18.

Fig. 15 is a schematic block diagram of an apparatus 1500 for determining resources according to an embodiment of the present application, where the apparatus 1500 may correspond to (e.g., may be applied to or is itself a terminal device described in the methods 600 and 1000, and each module or unit in the apparatus 1500 is configured to perform each action or process performed by the terminal device in the methods 600 and 1000, respectively, as shown in fig. 15, and the apparatus 1500 may include: a receiving unit 1510 and a processing unit 1520.

A receiving unit 1510, configured to receive first configuration information, where the first configuration information includes first indication information, where the first indication information is used to indicate M sets of control channel elements CCE included in a first set of control resources, and M is an integer greater than or equal to 1.

A processing unit 1520, configured to determine a first candidate control channel, where the first candidate control channel includes K CCEs, and K is an integer greater than or equal to 1.

The processing unit 1520 is further configured to determine, in the M CCE sets, a first target CCE set where the K CCEs are located.

The receiving unit 1510 is further configured to receive, on the first candidate control channel, control information sent by the network device according to the reference signal corresponding to the first target CCE set.

In a possible implementation manner, the first indication information includes frequency domain information and time domain information of the first control resource set, and number information N of CCEs included in each CCE set of the M CCE sets, where N is an integer greater than or equal to 1.

In yet another possible implementation manner, the first indication information includes index information of CCEs included in each of the M CCE sets.

In another possible implementation manner, the first configuration information further includes second indication information, where the second indication information is used to indicate a precoding manner of the reference signals corresponding to the M CCE sets, and the precoding manner includes any one of the following cases: all reference signals corresponding to the M CCE sets adopt the same precoding; or the reference signals corresponding to each CCE set in the M CCE sets adopt the same precoding; or the reference signals corresponding to each resource element group bundle included on each CCE employ the same precoding.

Optionally, the processing unit 1520 is further configured to determine, according to the precoding manner, a target reference signal that is the same as the precoding manner of the reference signals corresponding to the K CCEs in the reference signals corresponding to the first target CCE set; and the receiving unit 1510 is further configured to receive, according to the target reference signal, control information sent by the network device on the first candidate control channel.

In a possible implementation manner, the receiving unit 1510 is further configured to receive second configuration information, where the second configuration information is used to indicate a second target CCE set having an association relationship with the first target CCE set; the processing unit 1520 is further configured to receive, on the first candidate control channel, the control information sent by the network device according to the reference signal corresponding to the first target CCE set and the reference signal corresponding to the second target CCE set.

Optionally, the second configuration information includes offsets of the first target CCE set and the second target CCE set, where the offsets include at least one of a time domain offset and a frequency domain offset.

Optionally, the time domain offset is a slot offset and/or a symbol offset, and the frequency domain offset is a CCE offset.

Optionally, the second configuration information includes a mapping relationship between the M CCE sets and L CCE sets, where the L CCE sets are CCE sets in a second control resource set, and the second control resource set and the first control resource set have different identities.

In a possible implementation manner, the second configuration information is search space configuration information.

In yet another possible implementation manner, the second configuration information is further used to indicate that the second target CCE set and the first target CCE set employ the same precoding manner and/or the same precoding.

In another possible implementation manner, the first configuration information is control resource set configuration information.

Specifically, the receiving unit 1510 is configured to perform S610, S630, and S660 of the method 600, and the processing unit 1520 is configured to perform S620, S640, and S650 of the method 600; alternatively, the receiving unit 1510 is configured to execute S1010, S1030, S1040, and S1080 in the method 1000, the processing unit 1520 is configured to execute S1020, S1050, S1060, and S1070 in the method 1000, and specific processes of each unit for executing the corresponding steps are already described in detail in the method 600 and the method 1000, and are not repeated herein for brevity.

Fig. 16 is a schematic block diagram of an apparatus 1600 for determining resources according to another embodiment of the present application, where the apparatus 1600 may correspond to the base station described in the method 600, or may be a chip or a component applied to the base station, and each module or unit in the apparatus 1600 is respectively configured to execute each action or process performed by the base station in the method 400, as shown in fig. 16, the apparatus 1600 may include: a first transmitting unit 1610 and a second transmitting unit 1620.

A first sending unit 1610, configured to send first configuration information, where the first configuration information includes first indication information, where the first indication information is used to indicate M sets of control channel elements CCE included in a first set of control resources, and M is an integer greater than or equal to 1.

A second sending unit 1620, configured to send control information to the terminal device on a first candidate control channel, where the first candidate control channel includes K CCEs, the K CCEs are subsets of a first target CCE set in the M CCE sets, the first target CCE set employs the same precoding scheme as a reference signal corresponding to the first candidate control channel, and K is an integer greater than or equal to 1.

In a possible implementation manner, the first indication information includes frequency domain information and time domain information of the first control resource set, and number information N of CCEs included in each CCE set of the M CCE sets, where N is an integer greater than or equal to 1.

In yet another possible implementation manner, the first indication information includes index information of CCEs included in each of the M CCE sets.

In yet another possible implementation manner, the first configuration information further includes second indication information, where the second indication information is used to indicate a precoding manner of the reference signals corresponding to the M CCE sets, and the precoding manner includes any one of the following cases: all reference signals corresponding to the M CCE sets adopt the same precoding; or the reference signals corresponding to each CCE set in the M CCE sets adopt the same precoding; or the reference signals corresponding to each resource element group bundle included on each CCE employ the same precoding.

In one possible implementation, the first target CCE set is precoded in the same way as the reference signal corresponding to the first candidate control channel.

In yet another possible implementation manner, the first sending unit 1610 is further configured to send second configuration information, where the second configuration information is used to indicate a second target CCE set having an association relationship with the first target CCE set, and the second target CCE set employs the same precoding scheme as the reference signal corresponding to the first candidate control channel.

Optionally, the second configuration information includes offsets of the first target CCE set and the second target CCE set, where the offsets include at least one of a time domain offset and a frequency domain offset.

Optionally, the time domain offset is a slot offset and/or a symbol offset, and the frequency domain offset is a CCE offset.

Optionally, the second configuration information includes a mapping relationship between the M CCE sets and L CCE sets, where the L CCE sets are CCE sets in a second control resource set, and the second control resource set and the first control resource set have different identities.

In a possible implementation manner, the second configuration information is search space configuration information.

In yet another possible implementation manner, the second configuration information is further used to indicate that the second target CCE set and the first target CCE set employ the same precoding manner and/or the same precoding.

In another possible implementation manner, the first configuration information is control resource set configuration information.

Specifically, the first sending unit 1610 is configured to perform S610 in the method 600, and the second sending unit 1620 is configured to perform S630 in the method 600; alternatively, the first sending unit 1610 is configured to execute S1010 and S1030 in the method 1000, the second sending unit 1620 is configured to execute S1040 in the method 1000, and the specific processes of the units to execute the corresponding steps are already described in detail in the methods 600 and 1000, and are not repeated herein for brevity.

Fig. 17 is a schematic structural diagram of an example terminal device 1700 according to an embodiment of the present application. As shown in fig. 17, the terminal device 1700 includes a processor 1710 and a transceiver 1720. Optionally, the terminal device 1700 also includes a memory 1730. The processor 1710, the transceiver 1720 and the memory 1730 are in communication with each other via internal connection paths to transmit control and/or data signals, the memory 1730 is used for storing a computer program, and the processor 1710 is used for calling the computer program from the memory 1730 and running the computer program to control the transceiver 1720 to transmit and receive signals.

The processor 1710 and the memory 1730 may be combined into a processing device, and the processor 1710 is configured to execute the program code stored in the memory 1730 to implement the functions of the terminal device in the above method embodiments. In particular implementations, the memory 1730 may also be integrated with the processor 1710 or separate from the processor 1710. The transceiver 1720 may be implemented by way of transceiver circuitry.

The terminal device may further include an antenna 1740 configured to send uplink data or uplink control signaling output by the transceiver 1720 through a wireless signal, or send downlink data or downlink control signaling to the transceiver 1720 for further processing after receiving the downlink data or downlink control signaling.

It should be understood that the apparatus 1700 may correspond to the terminal device in the method 600 or the method 1000 according to the embodiment of the present application, and the apparatus 1700 may also be a chip or a component applied to the terminal device. And, each module in the apparatus 1700 implements a corresponding flow in the method 600 in fig. 6, or a corresponding flow in the method 1000. Specifically, the memory 1730 is configured to store a program code, so that when the processor 1710 executes the program code, the processor 1710 is controlled to execute S620, S640, and S650 in the method 600, the transceiver 1720 is configured to execute S610, S630, and S660 in the method 600, or the transceiver 1720 is configured to execute S1010, S1030, S1040, and S1080 in the method 1000, the processor 1710 is configured to execute S1020, S1050, S1060, and S1070 in the method 1000, and specific processes of the units executing the corresponding steps are described in detail, which is not repeated herein for brevity.

Fig. 18 is a schematic structural diagram of an example network device 1800 according to an embodiment of the present application. As shown in fig. 18, the network device 1800 (e.g., base station) includes a processor 1810 and a transceiver 1820. Optionally, the network device 1800 also includes a memory 1830. The processor 1810, the transceiver 1820 and the memory 1830 are used for communicating with each other via the internal connection path to transmit control and/or data signals, the memory 1830 is used for storing computer programs, and the processor 1810 is used for calling and running the computer programs from the memory 1830 to control the transceiver 1820 to transmit and receive signals.

The processor 1810 and the memory 1830 may be combined into a processing device, and the processor 1810 is configured to execute the program codes stored in the memory 1830 to implement the functions of the base station in the above method embodiments. In particular implementations, the memory 1830 may be integrated with the processor 1810 or may be separate from the processor 1810. The transceiver 1820 may be implemented by way of transceiver circuitry.

The network device may further include an antenna 1840, configured to send the downlink data or the downlink control signaling output by the transceiver 1820 through a wireless signal, or send the uplink data or the uplink control signaling to the transceiver 820 for further processing after receiving the downlink data or the downlink control signaling.

It is to be understood that the apparatus 1800 may correspond to a base station in the method 400 according to the embodiment of the present application, and the apparatus 1800 may also be a chip or a component applied to the base station. Moreover, each module in the apparatus 1800 implements the corresponding flow in the method 600 in fig. 6 and the method 1000 in fig. 10, and specifically, the memory 1830 is used to store program codes, so that the transceiver 1820 is used to execute the processes of S610 and S630 in the method 600 or execute the processes of S1010, S1030, and S1040 in the method 1000, and the specific processes of each unit executing the above corresponding steps are described in detail in the method 400, and are not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and no further description is provided herein.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and the division of the unit is only one logical functional division, and there may be other division ways in actual implementation, for example, a plurality of units or components may be combined. In addition, the shown or discussed coupling or communication connections between each other may be indirect coupling or communication connections through some interfaces, devices or units.

In addition, functional units in the embodiments of the present application may be integrated into one physical entity, or each unit may correspond to one physical entity separately, or two or more units may be integrated into one physical entity.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Claims (27)

1. A method of transmitting information, comprising:

receiving first configuration information, wherein the first configuration information includes first indication information, the first indication information is used for indicating M Control Channel Element (CCE) sets included in a first control resource set, and M is an integer greater than or equal to 1;

determining a first candidate control channel, the first candidate control channel comprising K CCEs, K being an integer greater than or equal to 1;

determining a first target CCE set in which the K CCEs are located in the M CCE sets;

and receiving control information sent by network equipment on the first candidate control channel according to the reference signal corresponding to the first target CCE set.

2. The method of claim 1, wherein the first indication information includes frequency domain information, time domain information of the first set of control resources, and number of CCEs information N included in each of the M sets of CCEs, where N is an integer greater than or equal to 1.

3. The method of claim 1, wherein the first indication information includes index information of CCEs included in each of the M sets of CCEs.

4. The method according to any one of claims 1 to 3, wherein the first configuration information further includes second indication information, the second indication information is used for indicating a precoding scheme of the reference signals corresponding to the M CCE sets, and the precoding scheme includes any one of:

all reference signals corresponding to the M CCE sets adopt the same precoding; or

The reference signals corresponding to each CCE set in the M CCE sets adopt the same precoding; or

And the reference signals corresponding to each resource element group bundle included on each CCE adopt the same precoding.

5. The method of claim 4, wherein the receiving control information transmitted by a network device on the first candidate control channel according to the reference signal corresponding to the first target CCE set comprises:

according to the precoding mode, determining a target reference signal which has the same precoding mode as that of the reference signals corresponding to the K CCEs in the reference signals corresponding to the first target CCE set;

and receiving the control information sent by the network equipment on the first candidate control channel according to the target reference signal.

6. The method according to any one of claims 1 to 5, further comprising:

receiving second configuration information indicating a second target CCE set having an association relationship with the first target CCE set;

and receiving the control information sent by the network equipment on the first candidate control channel according to the reference signal corresponding to the first target CCE set and the reference signal corresponding to the second target CCE set.

7. The method of claim 6, wherein the second configuration information includes offsets for the first target set of CCEs and the second target set of CCEs, and wherein the offsets include at least one of a time-domain offset and a frequency-domain offset.

8. The method of claim 7, wherein the time domain offset is a slot offset and/or a symbol offset and the frequency domain offset is a CCE offset.

9. The method of claim 6, wherein the second configuration information includes a mapping relationship between the M sets of CCEs and L sets of CCEs, and wherein the L sets of CCEs are sets of CCEs in a second set of control resources, and wherein the second set of control resources and the first set of control resources have different identities.

10. The method according to any one of claims 6 to 9, wherein the second configuration information is search space configuration information.

11. The method according to any of claims 6 to 10, wherein the second configuration information is further used to indicate that the second target CCE set and the first target CCE set employ the same precoding scheme and/or the same precoding.

12. The method according to any of claims 1 to 11, wherein the first configuration information is control resource set configuration information.

13. A method of transmitting information, comprising:

sending first configuration information, wherein the first configuration information comprises first indication information, the first indication information is used for indicating M Control Channel Element (CCE) sets included in a first control resource set, and M is an integer greater than or equal to 1;

and sending control information to terminal equipment on a first candidate control channel, wherein the first candidate control channel comprises K CCEs, the K CCEs are subsets of a first target CCE set in the M CCE sets, the first target CCE set adopts the same precoding mode as a reference signal corresponding to the first candidate control channel, and K is an integer greater than or equal to 1.

14. The method of claim 13, wherein the first indication information includes frequency domain information, time domain information of the first set of control resources, and number of CCEs information N included by each of the M CCE sets, N being an integer greater than or equal to 1.

15. The method of claim 13, wherein the first indication information includes index information of CCEs included in each of the M sets of CCEs.

16. The method according to any one of claims 13 to 15, wherein the first configuration information further includes second indication information, the second indication information is used for indicating a precoding scheme of the reference signals corresponding to the M CCE sets, and the precoding scheme includes any one of:

all reference signals corresponding to the M CCE sets adopt the same precoding; or

The reference signals corresponding to each CCE set in the M CCE sets adopt the same precoding; or

And the reference signals corresponding to each resource element group bundle included on each CCE adopt the same precoding.

17. The method of claim 16, wherein the first target CCE set is precoded in the same way as a reference signal corresponding to the first candidate control channel.

18. The method according to any one of claims 13 to 17, further comprising:

and sending second configuration information, wherein the second configuration information is used for indicating a second target CCE set having an association relation with the first target CCE set, and the second target CCE set adopts a precoding mode which is the same as that of a reference signal corresponding to the first candidate control channel.

19. The method of claim 18, wherein the second configuration information comprises offsets for the first target set of CCEs and the second target set of CCEs, and wherein the offsets comprise at least one of a time domain offset and a frequency domain offset.

20. The method of claim 19, wherein the time domain offset is a slot offset and/or a symbol offset and the frequency domain offset is a CCE offset.

21. The method of claim 18, wherein the second configuration information includes a mapping relationship between the M sets of CCEs and L sets of CCEs, wherein the L sets of CCEs are sets of CCEs in a second set of control resources, and wherein the second set of control resources and the first set of control resources have different identities.

22. The method according to any one of claims 18 to 21, wherein the second configuration information is search space configuration information.

23. The method of any of claims 18-22, wherein the second configuration information is further used to indicate that the second target CCE set and the first target CCE set are precoded in the same way and/or in the same manner.

24. The method according to any of claims 13 to 23, wherein the first configuration information is control resource set configuration information.

25. A communications apparatus, comprising:

a memory for storing program instructions and data;

a processor, coupled to the memory, to execute instructions in the memory to implement the method of any of claims 1 to 24.

26. A chip system, comprising:

a memory to store instructions;

a processor configured to retrieve and execute the instructions from the memory, so that a communication device in which the system-on-chip is installed performs the method according to any one of claims 1 to 24.

27. A computer-readable storage medium, characterized in that it stores a computer program which, when executed, implements the method of any one of claims 1 to 24.

Images