CN107453855B - Control channel sending method and device - Google Patents
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Abstract
The application provides a method for sending a control channel, which specifically comprises the following steps: the access network element receives and measures the uplink data sent by the terminal; the access network element determines whether the terminal is independently served by a first transmitting node in a plurality of transmitting nodes according to the measurement result of the uplink data, wherein each transmitting node in the plurality of transmitting nodes at least comprises one transmitting channel; the access network element encodes control channel data of the terminal according to a space-frequency diversity mode and weights the control channel data according to a first weight value to obtain first data; when the terminal is determined to belong to the independent service of the first transmitting node, the access network element sets the data mapped to other transmitting nodes except the first transmitting node in the first data to zero to obtain second data; the access network element sends the second data to the terminal, thereby realizing the spatial multiplexing of the control channel and improving the capacity of the control channel.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a method and an apparatus for transmitting a control channel.
Background
In a conventional communication system, such as a virtual multi-cell communication system, in which data channels are space-division-multiplexed to improve capacity performance, the capacity demand of the communication system for control channels increases as the number of users that can simultaneously multiplex the data channels increases.
Therefore, a control channel transmission method and apparatus are needed to implement space division multiplexing of control channels.
Disclosure of Invention
The embodiment of the application provides a control channel sending method and a control channel sending device, which are used for realizing space division multiplexing of a control channel in a scene covered by a plurality of logic ports CRS together.
In a first aspect, the present application provides a method for sending a control channel, which specifically includes the following steps: the access network element receives and measures the uplink data sent by the terminal; the access network element determines whether the terminal is independently served by a first transmitting node in a plurality of transmitting nodes according to the measurement result of the uplink data, wherein each transmitting node in the plurality of transmitting nodes at least comprises one transmitting channel; the access network element encodes control channel data of the terminal according to a space-frequency diversity mode and weights according to a first weight value to obtain first data, wherein the first weight value is the weight value of mapping public pilot signals of N logic ports of the access network element to M transmitting channels of the access network element in a weighted mode, M is an integer larger than 1, and N is an integer larger than 1; when the terminal is determined to belong to the independent service of the first transmitting node, the access network element sets the data mapped to other transmitting nodes except the first transmitting node in the first data to zero to obtain second data; and the access network element sends the second data to the terminal.
Therefore, by the method for transmitting the control channel, the spatial multiplexing of the control channel can be realized and the capacity of the control channel can be improved in a scene that a plurality of logical ports CRSs are covered together.
With reference to the first aspect, in a first possible implementation of the first aspect, at least two of the plurality of transmitting nodes of the access network element respectively serve one terminal, that is, the access network element may implement that control channel data corresponding to each terminal is sent to at least two terminals, so as to implement spatial multiplexing of the control channel data of at least two terminals. Of course, the present application implements spatial multiplexing of control channels for more terminals, and the present application does not limit the number of terminals that can implement spatial multiplexing of control channels simultaneously.
With reference to the first aspect and the first possible implementation of the first aspect, in a second possible implementation of the first aspect, the plurality of transmitting nodes may be distributed nodes, that is, the transmitting nodes are physically far apart and physically separated by a distance. Alternatively, the plurality of transmitting nodes may be centralized nodes, that is, the transmitting nodes are physically distributed in a centralized manner.
It can be seen that the distribution of the plurality of transmitting nodes in the embodiment of the present application may be a distributed node or a centralized node.
With reference to the first aspect and any one of possible implementations of the first aspect, in a third possible implementation of the first aspect, the that the terminal belongs to the first transmitting node and serves separately may include the following cases:
the terminal belongs to the first transmitting node for individual service.
Alternatively, the terminal belongs to a first beam individual service, the first beam being a beam generated by a first transmitting node in the distributed node, or the first beam being a beam generated by antenna beamforming in the centralized node.
Or, the terminal belongs to a first transmission channel for individual service, and the first transmission channel is a transmission channel of the first transmission node.
Here, the case that the terminal belongs to the first transmission node for individual service is merely an example, and the embodiment of the present application may further include the case that other terminals belong to the first transmission node for individual service, which is not limited in the present application.
As can be seen, when the access network element determines, through the above specific several conditions, that the terminal can be served by one corresponding transmission node alone, the space division multiplexing of the control channel can be implemented by using the control channel transmission method provided in the present application.
In a second aspect, the present application provides a method for sending a control channel, which specifically includes the following steps:
the terminal sends the uplink data to the access network element; the terminal receives the second data. And the second data is obtained by the access network element setting the zero to the data mapped to other transmitting nodes except the first transmitting node in the first data when the access network element determines that the terminal belongs to the independent service of the first transmitting node in the plurality of transmitting nodes according to the measurement result of the uplink data. Each transmitting node in the plurality of transmitting nodes at least comprises one transmitting channel, the first data is data obtained by the access network element through space-frequency diversity coding of control channel data of the terminal and weighting according to a first weight, the first weight is a weight which maps public pilot signals of N logic ports of the access network element to M transmitting channels of the access network element in a weighting mode, wherein M is an integer larger than 1, and N is an integer larger than 1.
For possible embodiments of the second aspect, please refer to each possible embodiment of the first aspect, which is not described herein again.
In a third aspect, the present application provides an access network element, including: the device comprises a receiving unit, a determining unit, a first processing unit, a second processing unit and a sending unit.
And the receiving unit is used for receiving and measuring the uplink data sent by the terminal.
A determining unit, configured to determine whether a terminal is separately served by a first transmitting node of a plurality of transmitting nodes according to a measurement result of uplink data, where each transmitting node of the plurality of transmitting nodes includes at least one transmitting channel.
The first processing unit is used for performing space-frequency diversity coding on control channel data of the terminal and weighting according to a first weight value to obtain first data, wherein the first weight value is the weight value which maps public pilot signals of N logic ports of the access network element to M transmitting channels of the access network element in a weighted manner, M is an integer greater than 1, and N is an integer greater than 1.
And the second processing unit is used for setting the data mapped to other transmitting nodes except the first transmitting node in the first data to zero to obtain second data when the terminal is determined to belong to the independent service of the first transmitting node.
And the sending unit is used for sending the second data to the terminal.
It can be seen that the access network element provided in this embodiment of the present application may be configured to perform the method steps of the access network element side in the above first aspect. For possible embodiments of the third aspect, please refer to each possible embodiment of the first aspect, which is not described herein again.
In a fourth aspect, the present application provides a terminal, comprising: a transmitting unit and a receiving unit.
A sending unit, configured to send uplink data to an access network element;
a receiving unit, configured to receive second data, where the second data is data obtained by the access network element by setting zero to data mapped to other transmission nodes except a first transmission node in the first data when the access network element determines, according to a measurement result of uplink data, that a terminal belongs to a single service of the first transmission node in the multiple transmission nodes, where each transmission node in the multiple transmission nodes at least includes one transmission channel, the first data is data obtained by the access network by performing space-frequency diversity coding on control channel data of the terminal and weighting according to a first weight, and the first weight is a weight obtained by weighting and mapping common pilot signals of N logical ports of the access network element to M transmission channels of the access network element, where M is an integer greater than 1, and N is an integer greater than 1.
It can be seen that the terminal provided in the embodiments of the present application may be configured to perform the above method steps at the terminal side of the first aspect. For possible embodiments of the fourth aspect, please refer to each possible embodiment of the first aspect, which is not described herein again.
In a fifth aspect, the present application provides a communication system comprising the access network element of the above third aspect, and/or comprising the terminal of the above fourth aspect.
In a sixth aspect, the present application provides a computer storage medium storing a program that, when executed, includes some or all of the steps of the control channel transmission method provided in the first aspect.
Advantageous effects of possible embodiments of any one of the above second to sixth aspects may be referred to the corresponding description of the above first aspect.
Drawings
Fig. 1-1 is a schematic structural diagram of a communication system according to an embodiment of the present application;
fig. 1-2 is a schematic diagram of data channel transmission corresponding to the system shown in fig. 1-1;
fig. 2-1 is a flowchart of a method for transmitting a control channel according to an embodiment of the present application;
fig. 2-2 is a schematic diagram of a control channel transmission method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an access network element 30 according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a terminal 40 according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an access network element 50 according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a terminal 60 according to an embodiment of the present disclosure.
Detailed Description
Hereinafter, portions of the present application are explained to facilitate understanding by those skilled in the art.
1) A terminal, also called USer Equipment (UE), is a device providing voice and/or data connectivity to a USer, for example, a handheld device with wireless connection function, a vehicle-mounted device, and so on. Common terminals include, for example: the mobile phone includes a mobile phone, a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), and a wearable device such as a smart watch, a smart bracelet, a pedometer, and the like. For another example, the terminal may also be an intelligent home device.
2) An AcceSS Network element, also called a Radio AcceSS Network (RAN) device, is a device for accessing a terminal to a wireless Network, including but not limited to: a BaSe Station, an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a BaSe Station Controller (BSC), a BaSe TranSceiver Station (BTS), a Home BaSe Station (e.g., Home evolved Node B, or Home Node B, HNB), and a BaSeBand Unit (BBU). In addition, a Wifi AcceSS Point (AcceSS Point, AP) or the like may also be included.
3) "plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: 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 solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Please refer to fig. 1-1, which is a schematic structural diagram of a communication system according to an embodiment of the present application. The system is cell-Specific reference Signal (CRS) demodulation based on 2 logical ports. The communication system comprises an access network element 100 and a terminal 130. The access network element 100 comprises two transmitting nodes, respectively transmitting node 1101 and transmitting node 1102. And transmitting node 1101 generates beam 1201 and transmitting node 1102 generates beam 1202. The number of the transmitting nodes and the number of the logical ports shown in the figure are both 2, and optionally, the number of the transmitting nodes and the number of the logical ports may be different, for example, the number of the transmitting nodes is greater than the number of the logical ports, which is not limited in the present application.
The communication system shown in fig. 1-1, which may be a virtual multi-beam system, achieves conventional one-sector coverage with two beams (beam 1201 and beam 1202) by using split multi-beam techniques. As shown, beams 1201 and 1202 correspond to transmitting node 1101 and transmitting node 1102, respectively. In a downlink control channel, such as a PhySical Downlink Control Channel (PDCCH), CRSs of the transmitting node 1101 and the transmitting node 1102 are commonly covered, that is, data of the transmitting node 1101 and data of the transmitting node 1102 need to be jointly demodulated to demodulate the CRSs. It should be noted that, conventionally, each sector may also implement coverage by more beams, that is, conventionally, each sector may also implement coverage by more transmitting nodes, where the coverage is implemented by only two beams for each sector, and the number of beams for implementing coverage for each sector is not limited in the embodiment of the present application.
Referring to fig. 1-2, which is a schematic diagram of data channel transmission of the system shown in fig. 1-1, in a downlink data channel, such as a downlink Shared phySical channel (PDSCH), when the data channel of the access network element 100 uses a spatial division multiplexing technique to serve the terminal 130 only with the beam 1201 corresponding to the transmitting node 1101, and in fig. 1-1, the control channel of the access network element 100 uses the beam 1201 corresponding to the transmitting node 1101 and the beam 1202 corresponding to the transmitting node 1102 as the terminal 130, a mismatch between the data channel and the control channel occurs, and the mismatch between the channels may reduce performance of the communication system.
Therefore, it is desirable to provide a control channel transmission method, which is matched with the data channel space division multiplexing transmission method, for increasing the capacity of the control channel, thereby increasing the capacity of the communication system.
However, if the control channel is directly space-division transmitted in the prior art, for example, in a Space Frequency Block (SFBC) system, after CRS weighted coding and other processing are performed on the transmitting node 1101 and the transmitting node 1102, CRS signal strengths on the two logical ports are basically the same, if the two transmitting nodes are respectively served to terminals served by the two transmitting nodes separately, an interference suppression effect cannot be achieved, and thus space-division multiplexing of the control channel cannot be achieved.
Therefore, the present application provides a method for transmitting a control channel, which can implement that different transmitting nodes independently transmit the control channel for different terminals in a scenario covered by a plurality of CRS together, thereby implementing a space division multiplexing transmission mode of the control channel. The common coverage of multiple CRS is that multiple CRS are mapped to multiple transmission channels, and the CRS can be demodulated only by demodulating data of the multiple transmission channels at the same time, for example, 2 CRS are covered together, or 4 CRS are covered together.
Please refer to fig. 2-1, which is a flowchart illustrating a method for transmitting a control channel according to an embodiment of the present application.
S210: and the terminal sends the uplink data to the access network element.
The access network element receives and measures the uplink data, for example, measures the power of the signal corresponding to each transmitting node in the uplink data, and then performs the following step S220.
S220: the access network element determines whether the terminal is separately served by a first transmitting node of the plurality of transmitting nodes according to the measurement result of the uplink data.
Wherein each of the plurality of transmitting nodes comprises at least one transmit channel.
When the access network element measures that the signal power of one transmitting node (e.g., the transmitting node 1101 shown in fig. 1-1) in each transmitting node is much higher than the signal power of other transmitting nodes (e.g., the transmitting node 1102 shown in fig. 1-1), the following method may be specifically used for determining: the signal power difference between the transmitting nodes is greater than a preset difference, which may be set to 10dB, for example. When the signal power difference between the transmitting nodes is greater than 10dB, the terminal is considered to be solely served by the transmitting node with the higher signal power. It should be noted that, the preset difference value in the embodiment of the present application is only an example, and the present application does not limit this.
Wherein, the single service comprises the following conditions:
the terminal belongs to the first transmitting node for independent service; or,
the terminal belongs to a first beam individual service, the first beam is a beam generated by a first transmitting node in the distributed node, or the first beam is a beam generated by antenna beam forming in the centralized node; or,
the terminal belongs to a first transmit channel individual service, the first transmit channel being a transmit channel of the first transmit node.
The case of the individual service is merely an example, and the embodiment of the present application may further include other cases of the individual service, which is not limited in the present application.
As can be seen, when the access network element determines, through the above specific several conditions, that the terminal can be served by one corresponding transmission node alone, the space division multiplexing of the control channel can be implemented by using the control channel transmission method provided in the present application.
S230: the access network element encodes the control channel data of the terminal according to a space-frequency diversity mode and weights the control channel data according to a first weight value to obtain first data.
The first weight is a weight for mapping the common pilot signals of the N logical ports of the access network element to the M transmission channels of the access network element in a weighted manner, where M is an integer greater than 1, N is an integer greater than 1, and the numbers of M and N may be the same or different, for example, M is greater than N. Each transmitting node may include at least one transmitting channel, and the plurality of transmitting nodes may be distributed nodes, that is, the nodes are physically far apart; alternatively, the plurality of transmitting nodes are centralized nodes, i.e. the transmitting nodes are physically centralized together.
It should be noted that, the present application does not limit the sequence of step S220 and step S230, and fig. 2-1 shows that step S220 is executed first, and step S230 is executed later, alternatively, step S230 may be executed first, and step S220 is executed later, which is not limited in the present application.
S240: and when the terminal is determined to belong to the independent service of the first transmitting node, the access network element sets the data mapped to other transmitting nodes except the first transmitting node in the first data to zero to obtain second data.
S250: and the access network element sends the second data to the terminal.
Therefore, by the method for transmitting the control channel provided by the embodiment of the application, when a plurality of logical ports CRS are covered together, space division transmission of the control channel can be realized, so that the coverage capability of a single transmitting node is improved, space division multiplexing of the control channel is realized, and the capacity of the control channel is improved. Thus, the capacity and performance of the communication system is provided.
In an implementation manner, when the control channel transmission method provided in this embodiment of the present application is used, on the same time-frequency resource, an access network element may simultaneously transmit control channel data to a plurality of terminals that are individually served by different transmitting nodes, and interference between the control channel data between the terminals is small, so that the access network element performs respective transmission of the control channels to the plurality of terminals, thereby implementing space division multiplexing of the control channels of the access network element.
The sending method of the control channel provided by the embodiment of the present application may be used in a scenario where multiple logical ports CRS collectively cover, and a scenario where 2 logical ports CRS collectively cover is taken as an example for description below.
The common coverage scenario of the 2 logical ports CRS is as follows: referring to the communication system shown in fig. 1-1, the access network element 100 covers CRS of 2 logical ports together, where the 2 logical ports are mapped to two transmission channels, the two transmission channels are respectively corresponding to the transmitting node 1101 and the transmitting node 1102, and the transmitting node 1101 and the transmitting node 1102 both transmit in a single polarization, that is, the transmitting node 1101 and the transmitting node 1102 both transmit in a single transmission channel, that is, two beams are transmitted, and each beam corresponds to one transmission channel.
When the original data of the downlink control channel is an S matrix, for example,
in time, and when the access network element 100 maps the CRS from two logical ports to two transmission channels by the first weight Q, for example, the first weight Q is
Then, the two logical ports are mapped to the two transmission channels by weighting with the first weight Q, and the coded control channel data is the first data S ', S ═ Q × S, specifically, the first data S', S ═ Q × S
When the access network element 100 measures the uplink channel transmitted by the terminal 130 and determines that the terminal 130 belongs to the transmitting node 1101 for individual service according to the power of the uplink data. The access network element 100 sets the data corresponding to the transmitting node 1102 in S' to zero to obtain the second data S ″, where S is specifically
The access network element 100 then sends the second data S "to the terminal 130. So that the control channel data can be sent to the terminal 130 only through the transmitting node 1101, and the transmitting node 1102 can serve other terminals, please refer to fig. 2-2, which is a schematic diagram of a control channel sending method provided in this embodiment of the present application. The communication system shown in fig. 2-2 is only added with the terminal 140 compared to the communication system shown in fig. 1-1, and the description of the communication system in this embodiment refers to the corresponding description in fig. 1-1, and is not repeated here. It can be seen that, with the control channel transmission method provided in the present application, the transmitting node 1101 of the access network element 100 may transmit control channel data corresponding to the terminal 130 for the terminal 130, and meanwhile, on the same time domain and frequency domain resource, the transmitting node 1102 of the access network element may transmit control channel data corresponding to the terminal 140 for the terminal 140, specifically, the transmitting node 1102 of the access network element may transmit control channel data corresponding to the terminal 140 for the terminal 140
Thereby realizing the space division multiplexing of the control channel of the access network element by the two terminals. In the embodiment of the present application, only two terminals for space division multiplexing of the control channel are illustrated, and more terminals that satisfy the individual service of a single transmission node may also be used for space division multiplexing of the control channel of the access network element.
Similarly, the embodiment of the present application may also be used in a scenario where CRS of 4 logical ports jointly cover, please refer to the system shown in fig. 1-1, when the transmitting node 1101 and the transmitting node 1102 are dual-polarized transmission, and 2 transmitting nodes implement 4 transmitting channels, that is, each transmitting node includes 2 transmitting channels, and the control channel raw data S1 is weighted by the first weight Q1 from 4 logical ports to 4 transmitting channels. The control channel is space division transmitted by using the method shown in fig. 2-1 in the present application. Illustratively, the control channel raw data S1 is,
for example, the first weights Q1 for mapping 4 logical ports to 4 transmit channels are, here, Q1 is only an example, and may also be other specific data,
when the access network element 100 determines that the transmitting node 1101 alone serves the terminal 130, the access network element 100 processes the data by the weighting mapping and the method shown in fig. 2-1, and finally sends the control channel data to the terminal 130 as follows:
at this time, the transmitting node 1102 may also send control channel data of the terminal for the terminal served by the transmitting node 1102 separately, where the specific data is as follows:
as can be seen from the above, in a scenario covered by 4 CRS, different transmitting nodes can independently transmit control channels for different terminals, thereby implementing a space division multiplexing transmission mode for the control channels.
The number of the logical ports and the number of the transmission channels in the above embodiments are the same, and correspond to each other. In another possible implementation, the number of logical ports and the number of transmit channels may be different, and when covered with one CRS shared by 4 logical ports, the case of mapping 4 logical ports to 8 transmit channels, that is, a scenario of dual-polarization transmission through 4 beams, where each beam is implemented as 8 transmit channels of 4 × 2 — 8. For example, the original control channel data is S1 above, and the first matrix Q2 that maps 4 logical ports to 8 transmission channels is as follows, where Q2 is only an example, and may also be other specific data, which is not limited in this application,
the control channel data shown in S1 and Q2 can be used to serve 4 terminals on the same time-frequency resource by using the transmission method of the control channel provided by the present application, where each terminal is served by a corresponding transmitting node.
Wherein, for terminal 0 served by transmitting node 0 alone in 4 transmitting nodes, the transmitted control channel data is:
wherein, for a terminal 1 which is served by a transmitting node 1 alone in 4 transmitting nodes, the transmitted control channel data is:
wherein, for a terminal 2 which is served by a transmitting node 2 alone in 4 transmitting nodes, the sent control channel data is:
wherein, for a terminal 3 served by a transmitting node 3 alone among 4 transmitting nodes, the sent control channel data is:
as can be seen, for the 4 transmitting nodes of the access network element, when each transmitting node serves a terminal separately, space division multiplexing of the control channels of the 4 terminals can be implemented on the same time-frequency resource.
In addition, for other multi-beam networking, for example, in a scenario with more beams or transmitting nodes in a band-shaped networking or a ring-shaped networking, when space division multiplexing needs to be performed on a control channel, the application may be performed according to a scenario covered by the above 2 logical ports CRS together or a scenario covered by the above 4 logical ports CRS together, which is not described herein again.
The method steps executed by the access network element side of the method for controlling channel transmission shown in the embodiment of the present application can be implemented by the following access network element 30.
Please refer to fig. 3, which is a schematic structural diagram of an access network element 30 according to an embodiment of the present application. The access network element 30 comprises a receiving unit 310, a determining unit 320, a first processing unit 330, a second processing unit 340 and a sending unit 350.
A receiving unit 310, configured to receive and measure uplink data sent by a terminal.
A determining unit 320, configured to determine whether the terminal is separately served by a first transmitting node of the multiple transmitting nodes according to the measurement result of the uplink data.
Wherein each of the plurality of transmitting nodes comprises at least one transmit channel.
The first processing unit 330 is configured to perform space-frequency diversity coding on the control channel data of the terminal and perform weighting according to the first weight to obtain first data. Wherein, the first weight is a weight for mapping the public pilot signals of the N logical ports of the access network element to the M transmission channels of the access network element in a weighted manner, where M is an integer greater than 1, and N is an integer greater than 1.
The second processing unit 340 is configured to, when it is determined that the terminal belongs to the first transmitting node for independent service, set zero to data mapped to other transmitting nodes except the first transmitting node in the first data, so as to obtain second data.
A sending unit 350, configured to send the second data to the terminal.
The above-shown access network element 30 may be configured to execute the method steps of the access network element side in the method for sending the control channel provided in the embodiment of the present application, for a specific description, refer to the description of the above method side, and details are not described here again.
The embodiment of the present application provides a schematic structural diagram of a terminal 40, please refer to fig. 4 for executing the above method steps at the terminal side of the control channel transmission method. The terminal 40 includes a transmitting unit 410 and a receiving unit 420.
A sending unit 410, configured to send the uplink data to the access network element.
A receiving unit 420, configured to receive the second data.
And the second data is obtained by the access network element setting the zero to the data mapped to other transmitting nodes except the first transmitting node in the first data when the access network element determines that the terminal belongs to the independent service of the first transmitting node in the plurality of transmitting nodes according to the measurement result of the uplink data. Each transmitting node in the plurality of transmitting nodes at least comprises one transmitting channel, and the first data is data obtained by the access network through space-frequency diversity coding of control channel data of the terminal and weighting according to a first weight. The first weight is a weight for mapping the public pilot signal weight of N logical ports of the access network element to M transmitting channels of the access network element, wherein M is an integer greater than 1, and N is an integer greater than 1.
The terminal 40 shown above may be configured to execute the method steps of the terminal side in the method for sending the control channel provided in the embodiment of the present application, for specific description, refer to the description of the method side above, and no further details are described here.
It should be understood that the division of the units of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these units can be implemented entirely in software, invoked by a processing element; or may be implemented entirely in hardware; and part of the units can be realized in the form of calling by a processing element through software, and part of the units can be realized in the form of hardware. For example, the determination unit 320 may be a processing element separately set up, or may be implemented by being integrated in a chip of the base station, or may be stored in a memory of the base station in the form of program codes, and the function of the determination unit may be invoked and executed by a processing element of the base station. The other units are implemented similarly. In addition, all or part of the units can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In the implementation process, each step or each unit above of the above method may be implemented by an integrated logic circuit of hardware in a processor element or by a processing element calling an instruction in the form of software.
For example, the above units may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), etc. For another example, when some of the above units are implemented in the form of a processing element scheduler code, the processing element may be a general purpose processor, such as a Central Processing Unit (CPU) or other processor that can call the program code. As another example, these units may be integrated together, implemented in the form of a System-on-a-chip (SOC).
Please refer to fig. 5, which is a schematic structural diagram of an access network element 50 according to an embodiment of the present application. As shown in fig. 5, the access network element 50 includes: processor 510, memory 520, transceiver 530. The transceiving means 530 may be connected to an antenna. The memory 520 is used for storing program codes for implementing the units of the above method embodiments or apparatus embodiments, and the processor 510 calls the program codes to execute the operations of the base station in the above method embodiments.
Please refer to fig. 6, which is a schematic structural diagram of a terminal 60 according to an embodiment of the present disclosure. As shown in fig. 6, the terminal 60 includes: a processor 610, a memory 620, and a transceiver 630. The transceiving means 630 may be connected to an antenna. The memory 620 is used for storing program codes for implementing the units of the above method embodiments or apparatus embodiments, and the processor 610 calls the program codes to execute the operation of the terminal in the above method embodiments. Wherein the transceiving means 630 may perform the above method steps of the transmitting unit 410 and the receiving unit 420.
Through the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Furthermore, the method is simple. Any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a Digital Subscriber Line (DSL), or a wireless technology such as infrared, radio, and microwave, the coaxial cable, the fiber optic cable, the twisted pair, the DSL, or the wireless technology such as infrared, radio, and microwave are included in the fixation of the medium.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (18)
1. A control channel transmission method, comprising:
the access network element receives and measures the uplink data sent by the terminal;
the access network element determines whether the terminal is separately served by a first transmitting node in a plurality of transmitting nodes according to the measurement result of the uplink data, wherein each transmitting node in the plurality of transmitting nodes at least comprises a transmitting channel;
the access network element encodes control channel data of the terminal according to a space-frequency diversity mode and weights according to a first weight value to obtain first data, wherein the first weight value is the weight value of mapping public pilot signals of N logic ports of the access network element to M transmitting channels of the access network element in a weighted mode, M is an integer larger than 1, and N is an integer larger than 1;
when the terminal is determined to belong to the independent service of the first transmitting node, the access network element sets the data mapped to other transmitting nodes except the first transmitting node in the first data to zero to obtain second data;
and the access network element sends the second data to the terminal.
2. The method of claim 1, wherein the access network element transmits corresponding data to terminals individually served by other transmission nodes of the plurality of transmission nodes except the first transmission node on a same time-domain frequency-domain resource.
3. The method of claim 1 or 2, wherein the plurality of transmitting nodes are distributed nodes; alternatively, the plurality of transmitting nodes are centralized nodes.
4. The method according to any of claims 1 to 2, wherein the terminal is served solely by the first transmitting node, comprising:
the terminal belongs to a first transmitting node for individual service; or,
the terminal belongs to a first beam individual service, the first beam is a beam generated by a first transmitting node in a distributed node, or the first beam is a beam generated by antenna beam forming in a centralized node; or,
the terminal belongs to a first transmit channel individual service, the first transmit channel being a transmit channel of the first transmit node.
5. The method of claim 3, wherein the terminal is served solely by the first transmitting node, comprising:
the terminal belongs to a first transmitting node for individual service; or,
the terminal belongs to a first beam individual service, the first beam is a beam generated by a first transmitting node in a distributed node, or the first beam is a beam generated by antenna beam forming in a centralized node; or,
the terminal belongs to a first transmit channel individual service, the first transmit channel being a transmit channel of the first transmit node.
6. A control channel transmission method, comprising:
the terminal sends the uplink data to the access network element;
the terminal receives second data, where the second data is data obtained by the access network element by setting zero to data mapped to other transmission nodes except a first transmission node in the first data when the access network element determines that the terminal belongs to a first transmission node in multiple transmission nodes for individual service according to a measurement result of the uplink data, where each transmission node in the multiple transmission nodes at least includes one transmission channel, the first data is data obtained by the access network element by space-frequency diversity coding of control channel data of the terminal and weighting according to a first weight, and the first weight is a weight obtained by weighting and mapping common pilot signals of N logical ports of the access network element to M transmission channels of the access network element, where M is an integer greater than 1, and N is an integer greater than 1.
7. The method of claim 6, wherein the plurality of transmitting nodes are distributed; alternatively, the plurality of transmitting nodes are centrally distributed.
8. The method of claim 6, wherein the terminal is served solely by the first transmitting node, comprising:
the terminal belongs to a first transmitting node for individual service; or,
the terminal belongs to a first beam individual service, the first beam is a beam generated by a first transmitting node in a distributed node, or the first beam is a beam generated by antenna beam forming in a centralized node; or,
the terminal belongs to a first transmit channel individual service, the first transmit channel being a transmit channel of the first transmit node.
9. An access network element, comprising: a receiving unit, a determining unit, a first processing unit, a second processing unit and a transmitting unit,
the receiving unit is used for receiving and measuring uplink data sent by the terminal;
the determining unit is configured to determine whether the terminal is separately served by a first transmitting node of a plurality of transmitting nodes according to the measurement result of the uplink data, where each transmitting node of the plurality of transmitting nodes includes at least one transmitting channel;
the first processing unit is configured to perform space-frequency diversity coding on control channel data of the terminal and perform weighting according to a first weight to obtain first data, where the first weight is a weight obtained by mapping common pilot signals of N logical ports of the access network element to M transmission channels of the access network element in a weighted manner, where M is an integer greater than 1, and N is an integer greater than 1;
the second processing unit is configured to set, when it is determined that the terminal belongs to the single service of the first transmission node, zero to data mapped to other transmission nodes except the first transmission node in the first data, so as to obtain second data;
the sending unit is configured to send the second data to the terminal.
10. The access network element of claim 9, wherein the access network element transmits corresponding data to terminals individually served by other transmission nodes of the plurality of transmission nodes except the first transmission node on a same time-domain frequency-domain resource.
11. The access network element of claim 10 or 9, wherein the plurality of transmitting nodes are distributed nodes; alternatively, the plurality of transmitting nodes are centralized nodes.
12. The access network element according to any of claims 9 to 10, wherein the terminal is served solely by the first transmitting node, comprising:
the terminal belongs to a first transmitting node for individual service; or,
the terminal belongs to a first beam individual service, the first beam is a beam generated by a first transmitting node in a distributed node, or the first beam is a beam generated by antenna beam forming in a centralized node; or,
the terminal belongs to a first transmit channel individual service, the first transmit channel being a transmit channel of the first transmit node.
13. The access network element of claim 11, wherein the terminal is served solely by the first transmitting node, comprising:
the terminal belongs to a first transmitting node for individual service; or,
the terminal belongs to a first beam individual service, the first beam is a beam generated by a first transmitting node in a distributed node, or the first beam is a beam generated by antenna beam forming in a centralized node; or,
the terminal belongs to a first transmit channel individual service, the first transmit channel being a transmit channel of the first transmit node.
14. A terminal, comprising: a sending unit and a receiving unit, wherein,
the sending unit is used for sending the uplink data to the access network element;
the receiving unit is configured to receive second data, where the second data is when the access network element determines, according to the measurement result of the uplink data, that the terminal belongs to a first transmitting node of multiple transmitting nodes for individual service, the access network element zeroes the data mapped to the data of other transmitting nodes except the first transmitting node in the first data, wherein each transmitting node in the plurality of transmitting nodes at least comprises one transmitting channel, the first data is data obtained by the access network through space-frequency diversity coding of control channel data of the terminal and weighting according to a first weight, the first weight is a weight for mapping the public pilot signals of the N logical ports of the access network element to M transmission channels of the access network element in a weighted manner, wherein M is an integer greater than 1, and N is an integer greater than 1.
15. The terminal of claim 14, wherein the plurality of transmitting nodes are distributed; alternatively, the plurality of transmitting nodes are centrally distributed.
16. The terminal of claim 14, wherein the terminal is served solely by the first transmitting node, comprising:
the terminal belongs to a first transmitting node for individual service; or,
the terminal belongs to a first beam individual service, the first beam is a beam generated by a first transmitting node in a distributed node, or the first beam is a beam generated by antenna beam forming in a centralized node; or,
the terminal belongs to a first transmit channel individual service, the first transmit channel being a transmit channel of the first transmit node.
17. A communication system, characterized in that the communication system comprises an access network element according to any of claims 9 to 13 and/or comprises a terminal according to any of claims 14 to 16.
18. A computer storage medium, characterized in that it stores a program which, when executed, comprises the method of any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525412.0A CN107453855B (en) | 2017-06-30 | 2017-06-30 | Control channel sending method and device |
| PCT/CN2018/091946 WO2019001314A1 (en) | 2017-06-30 | 2018-06-20 | Method and device for transmitting control channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710525412.0A CN107453855B (en) | 2017-06-30 | 2017-06-30 | Control channel sending method and device |
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| CN107453855B true CN107453855B (en) | 2020-09-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101814939A (en) * | 2009-02-23 | 2010-08-25 | 中兴通讯股份有限公司 | Multi-antenna transmit diversity method and device |
| CN102223166A (en) * | 2010-04-15 | 2011-10-19 | 中国移动通信集团公司 | Transmitting station and signal transmission method |
| CN104144038A (en) * | 2013-05-10 | 2014-11-12 | 普天信息技术研究院有限公司 | LTE system downlink control channel emitting method and device |
| WO2017028059A1 (en) * | 2015-08-14 | 2017-02-23 | 华为技术有限公司 | Space division multiplexing processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102724757B (en) * | 2011-03-30 | 2017-11-07 | 中兴通讯股份有限公司 | A kind of control channel information processing method and system |
| CN103687018B (en) * | 2012-09-25 | 2016-12-21 | 中兴通讯股份有限公司 | A kind of control channel processing method |
| CN103684552A (en) * | 2012-09-26 | 2014-03-26 | 中兴通讯股份有限公司 | Interference avoiding method and apparatus in wireless communication system |
| CN107453855B (en) * | 2017-06-30 | 2020-09-29 | 西安华为技术有限公司 | Control channel sending method and device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814939A (en) * | 2009-02-23 | 2010-08-25 | 中兴通讯股份有限公司 | Multi-antenna transmit diversity method and device |
| CN102223166A (en) * | 2010-04-15 | 2011-10-19 | 中国移动通信集团公司 | Transmitting station and signal transmission method |
| CN104144038A (en) * | 2013-05-10 | 2014-11-12 | 普天信息技术研究院有限公司 | LTE system downlink control channel emitting method and device |
| WO2017028059A1 (en) * | 2015-08-14 | 2017-02-23 | 华为技术有限公司 | Space division multiplexing processing method |
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| CN107453855A (en) | 2017-12-08 |
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