WO2018121239A1

WO2018121239A1 - Method for configuring codebook, and base station and terminal

Info

Publication number: WO2018121239A1
Application number: PCT/CN2017/115606
Authority: WO
Inventors: 张雷鸣; 刘一樊; 雷鸣
Original assignee: 华为技术有限公司
Priority date: 2016-12-30
Filing date: 2017-12-12
Publication date: 2018-07-05
Also published as: CN108270472A

Abstract

The embodiments of the present invention relate to a method for configuring a codebook, a base station and a terminal. The method comprises: a base station configuring, for a terminal, configuration information about a codebook, wherein the configuration information about the codebook comprises at least one of the following: version information about the codebook, type information about the codebook, parameter information about the codebook, and port number information about the codebook; and the base station sending the configuration information about the codebook to the terminal by means of physical layer signalling or a media access control (MAC) layer signalling. It can be seen therefrom that in the embodiments of the present invention, a dynamically configured codebook can match a dynamically configured reference signal CSI RS for channel state information measurement.

Description

Method, base station and terminal for configuring codebook

The present application claims priority to Chinese Patent Application No. 201611262404.3, filed on Dec. 30, 2016, the entire disclosure of which is incorporated herein by reference. In the application.

Technical field

The present invention relates to the field of communications, and in particular, to a method, a base station, and a terminal for configuring a codebook.

Background technique

The fifth-generation mobile communication technology (5th-Generation, 5G), as a next-generation communication technology, supports higher-speed data transmission, for example, Evolved mobile broadband (eMBB) transmission, Massive machine type communications , mMTC) and Ultra-low latency reliable communications (ULLRC). Among them, eMBB technology requires more bandwidth resources and more efficient communication technology support, and large-scale antenna transmission technology is a communication technology that has attracted much attention. Large-scale antenna transmission increases the spatial freedom by deploying large-scale antenna arrays, which can support users in more dimensions (vertical dimension transmission enhancement), more transmission layers and more users' spatial multiplexing. For example, Multi-User Multiple-Input Multiple-Output MU-MIMO technology. As the size of the antenna array expands, the number of ports that measure the reference signal increases accordingly, and the measurement reference signal overhead increases. Currently, it is considered that beamforming information for channel state information measurement (CSI RS) reduces the overhead of measuring reference signals. Beamforming CSI RS reduces CSI RS overhead and does not mean that only beamforming CSI RS is required. Non-precoded CSI RS also has its advantages, such as obtaining more complete channel information and assisting in obtaining the pre-processing method used by beamforming CSI RS. Therefore, multiple sets of CSI RS resources can be configured in the system to the terminal, including non-precoded CSI RS resources and beamforming CSI RS resources.

In addition, because high-frequency communication can provide more bandwidth, high-frequency communication has become a key technology to achieve 5G transmission indicators. High-frequency communication has more bandwidth, but it also has serious attenuation problems. Therefore, high-frequency communication is combined with a large-scale antenna array to overcome the problem of severe attenuation. The specific method is to form a narrow beam through a large-scale antenna array to enhance coverage in a specific direction. In order to achieve full cell coverage, the base station needs to perform beam management. In 5G, beam management is mainly implemented by beamforming CSI RS.

As the user's location moves, the beamforming used by the beamforming CSI RS also changes, so dynamic configuration of CSI RS resources is required. The transmission metrics are different for different data types. For example, for data with strict time delay and small data volume, the transmission reliability is high, and the data that is not sensitive to time delay and large in data volume has high transmission efficiency requirements. Therefore, different transmission strategies are used for different data type transmissions. For example, for data with a demanding delay and a small amount of data, a wide beam beam is used to generate a wide beam for data transmission, thereby improving reliability. For data that is not sensitive to time delay and has a large amount of data, a high resolution codebook (eg.linear combination codebook) is used to generate a precise beam for data transmission, thereby improving transmission efficiency. It can be seen that in 5G communication, multiple CSI RS resources coexist, and the CSI RS configuration is more dynamic. CSI feedback needs are also more flexible and rich. Therefore, the CSI feedback configuration also needs to adapt to these changes, which is more flexible and dynamic. The traditional Long Term Evolution (LTE) system uses a semi-static codebook (Codebook) configuration. The configuration period of the semi-static codebook configuration is generally 100-200ms. However, the dynamic CSI RS configuration can be changed in 1ms. That is, the CSI RS configuration has changed, and the codebook configuration cannot track its changes. The semi-static codebook configuration also does not accommodate dynamic feedback requirements.

Summary of the invention

The embodiment of the invention provides a method, a base station and a terminal for configuring a codebook. The dynamically configured codebook can be matched with a dynamic CSI RS configuration, and can also adapt to dynamic feedback requirements.

In a first aspect, a method of configuring a codebook is provided. The base station configures the configuration information of the codebook for the terminal, and the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, parameter information of the codebook, and port number information of the codebook; Signaling or Medium Access Control (MAC) layer signaling sends configuration information of the codebook to the terminal.

In the embodiment of the present invention, the physical layer signaling or the MAC layer signaling indicates that the time interval can reach 1 to 20 scheduling units. Therefore, the configuration information that the base station can dynamically indicate the codebook to the terminal can be specifically implemented.

In a possible implementation, after the sending the configuration information of the codebook to the terminal, the method further includes: sending a reference signal for channel state information measurement to the terminal; the configuration information of the code book is used to indicate the terminal according to the reference The signal feeds back to the base station channel state information that conforms to the configuration information of the codebook. According to this embodiment, before the base station transmits the reference signal for channel state information measurement to the terminal, the base station can dynamically indicate the configuration information of the codebook to the terminal, so that the dynamically configured codebook can be matched with the dynamic reference signal configuration.

In a possible implementation, the method further includes: after the base station determines that the configuration information of the codebook is changed, configuring configuration information of the new codebook for the terminal; the base station sends the terminal to the terminal by using physical layer signaling or MAC layer signaling. Configuration information for the new codebook. According to this embodiment, on the one hand, the base station can dynamically indicate the configuration information of the codebook to the terminal, so that the dynamically configured codebook can be matched with the dynamic reference signal configuration, and the change of the CSI feedback requirement is applied in time; The configuration information of the codebook is transmitted to the terminal before the configuration information of the codebook changes, which can save signaling overhead.

In a possible implementation manner, the port number information of the codebook includes port configuration information of a reference signal used for channel state information measurement, and the port configuration information is used to indicate the port number of the codebook. According to this embodiment, the base station indicates the number of ports of the codebook to the terminal by using the port configuration information of the reference signal, so that the codebook configured by the state can be matched with the dynamic reference signal configuration, and there is no additional signaling overhead.

In a second aspect, a method of configuring a codebook is provided. The terminal receives configuration information of the codebook from the base station by using physical layer signaling or MAC layer signaling, where the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, parameter information and code of the codebook. The port number information of the present; the terminal determines a codebook set for channel state feedback according to the configuration information of the codebook.

In a possible implementation manner, after receiving the configuration information of the codebook, the method further includes: the terminal receiving, by the base station, a reference signal for channel state information measurement; and the terminal, according to the reference signal, feeding back, to the base station, the configuration information that conforms to the codebook. Channel status information.

In a possible implementation manner, the port number information of the codebook includes port configuration information of a reference signal used for channel state information measurement, and the port configuration information is used to indicate the port number of the codebook.

A third aspect provides a base station, where the base station includes: a processing module and a communication module; and a processing module, configured to: Configuring configuration information of the codebook for the terminal, the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, parameter information of the codebook, and port number information of the codebook; and controlling the communication module to pass The physical layer signaling or the MAC layer signaling sends configuration information of the codebook to the terminal.

In a possible implementation, the processing module is further configured to: after the control communication module sends the configuration information of the codebook to the terminal, to further send a reference signal for channel state information measurement to the terminal; And indicating to the terminal, the channel state information corresponding to the configuration information of the codebook is fed back to the base station according to the reference signal.

In a possible implementation, the processing module is further configured to: after determining that the configuration information of the codebook changes, configure configuration information of the new codebook for the terminal, and control the communication module to pass physical layer signaling or MAC layer signaling. Let the terminal send the configuration information of the new codebook.

A fourth aspect provides a terminal, where the terminal includes: a processing module and a communication module; and a communication module, configured to receive configuration information of the codebook from the base station by using physical layer signaling or MAC layer signaling, where the configuration information of the codebook includes At least one of the following: version information of the codebook, type information of the codebook, parameter information of the codebook, and port number information of the codebook; and a processing module, configured to determine a codebook for channel state feedback according to configuration information of the codebook set.

In a possible implementation, the communications module is further configured to: receive a reference signal for channel state information measurement from the base station; the processing module is further configured to determine channel state information that conforms to the configuration information of the codebook according to the reference signal, and control The communication module feeds back channel state information to the base station.

On the other hand, the embodiment of the present invention provides a base station, which can implement the functions performed by the base station in the method design of the first aspect, and the functions can be implemented by using hardware or by executing corresponding software through hardware. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the base station includes a processor and a communication interface configured to support the base station in performing the corresponding functions of the first aspect method described above. The communication interface is used to support communication between the base station and a terminal or other network element. The base station can also include a memory for coupling with the processor that holds the necessary program instructions and data for the base station.

In another aspect, the embodiment of the present invention provides a terminal, which can implement the functions performed by the terminal in the method design of the second aspect, and the function can be implemented by using hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the structure of the terminal includes a processor and a communication interface configured to support the terminal to perform corresponding functions in the above methods. The communication interface is used to support communication between the terminal and a base station or other network elements. The terminal can also include a memory for coupling with the processor that retains the program instructions and data necessary for the terminal.

In another aspect, an embodiment of the present invention provides a communication system, including the base station and the terminal in the foregoing aspect.

In still another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the base station, including a program designed to execute the first aspect described above.

In still another aspect, an embodiment of the present invention provides a computer storage medium for storing the same for the terminal. Computer software instructions comprising a program for performing the second aspect described above.

In still another aspect, embodiments of the present invention provide a computer program product comprising instructions that, when executed by a computer, cause the computer to perform the functions performed by the base station in the method design described above.

In still another aspect, embodiments of the present invention provide a computer program product comprising instructions that, when executed by a computer, cause a computer to perform functions performed by a terminal in the method design described above.

DRAWINGS

FIG. 1 is a schematic diagram of an application scenario based on a method for configuring a codebook according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a method for configuring a codebook according to an embodiment of the present invention;

3 is a schematic view showing an application effect of the method shown in FIG. 2;

4 is a schematic diagram of another method for configuring a codebook according to an embodiment of the present invention;

4A is a schematic diagram of an application effect of the method shown in FIG. 4;

4B is a schematic view showing another application effect of the method shown in FIG. 4;

FIG. 5 is a schematic diagram of another method for configuring a codebook according to an embodiment of the present invention;

FIG. 6 is a structural diagram of a base station according to an embodiment of the present invention;

FIG. 7 is a structural diagram of another base station according to an embodiment of the present invention;

FIG. 8 is a structural diagram of a terminal according to an embodiment of the present invention;

FIG. 9 is a structural diagram of another terminal according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the drawings and embodiments of the embodiments of the present invention.

FIG. 1 is a schematic diagram of an application scenario based on a method for configuring a codebook according to an embodiment of the present invention. Referring to FIG. 1, a MIMO communication technology is employed between the base station 101 and the terminal 102. The base station 101 can configure a set of N beams, and transmit data or CSI RS to the terminal 102 through one or more of the N beams. Based on the application scenario, the embodiment of the present invention provides a method for dynamically indicating a codebook, adapting to dynamic changes of CSI RS, and improving feedback efficiency.

In an example, the base station configures the configuration information of the codebook for the terminal, and the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, parameter information of the codebook, and port number information of the codebook. The base station sends the configuration information of the codebook to the terminal through physical layer signaling or medium access control (MAC) layer signaling. The MAC layer signaling may be specifically a medium access control control element (MAC CE) signaling.

In an example, after transmitting the configuration information of the codebook to the terminal, the base station sends a reference signal for channel state information measurement to the terminal, where the configuration information of the codebook is used to instruct the terminal to feed back the configuration according to the codebook to the base station according to the reference signal. Channel state information (CSI) of information.

In an example, after the base station determines that the configuration information of the codebook is changed, the terminal configures configuration information of the new codebook for the terminal; the base station sends the configuration information of the new codebook to the terminal by using physical layer signaling or MAC layer signaling. That is to say, the base station can transmit the configuration information of the codebook by using the same transmission period as the CSI RS, thereby implementing dynamic configuration of the codebook. The base station may also send the configuration information of the codebook to the terminal only before the configuration information of the codebook changes, thereby implementing dynamic configuration of the codebook and saving signaling overhead as much as possible.

In one example, the port number information of the codebook includes port configuration information for a reference signal for channel state information measurement, the port configuration information being used to indicate the number of ports of the codebook. In other words, by adopting an implicit indication manner, the configuration information of the CSI RS is used to indicate the configuration information of the codebook by setting the correspondence between the configuration information of the CSI RS and the configuration information of the codebook, and no additional information is needed. Signaling overhead can save transmission resources.

In still another example, a combination of an explicit indication and an implicit indication may be adopted, that is, a part of the configuration information of the codebook is indicated by the configuration information of the CSIRS, and another part of the configuration information of the codebook is dynamically transmitted, thereby Implement dynamic configuration of the codebook.

FIG. 2 is a schematic diagram of a method for configuring a codebook according to an embodiment of the present invention. The method may be based on the application scenario shown in FIG. 1, and the base station dynamically configures a codebook to the terminal in an implicit manner. Referring to FIG. 2, the method is include:

Step 201: The base station configures the port number information of the codebook for the terminal.

Step 202: The base station sends the port configuration information of the CSI RS to the terminal by using physical layer signaling or MAC layer signaling, where the port configuration information is used to indicate the number of ports of the codebook.

Step 203: The terminal determines the number of ports of the codebook according to the port configuration information of the CSI RS.

For example, the protocol stipulates that the number of ports of the codebook is the same as the number of ports of the CSI RS, and the terminal determines the number of ports of the codebook according to the port configuration information of the received CSI RS.

Step 204: The terminal determines a codebook set for channel state feedback according to the number of ports of the codebook.

In the embodiment of the present invention, the dynamically configured codebook can be matched with the dynamically configured CSI RS, and there is no additional signaling overhead.

FIG. 3 is a schematic diagram of the application effect of the method shown in FIG. 2. FIG. Referring to FIG. 3, the base station configures multiple sets of CSI RS resources for the user, and the number of ports of different CSI RS resources is different. The terminal adaptively selects the codebook of the corresponding port number to perform channel state information feedback according to the received CSI RS.

FIG. 4 is a schematic diagram of another method for configuring a codebook according to an embodiment of the present invention. The method may be based on the application scenario shown in FIG. 1, and the base station dynamically configures the codebook to the terminal in an explicit manner. Referring to FIG. Methods include:

Step 401: The base station configures configuration information of the codebook for the terminal, where the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, parameter information of the codebook, and port number information of the codebook.

The version of the codebook refers to a codebook defined by different protocol versions, such as an R8 4TX codebook and an R12 4Tx codebook.

The type of the codebook refers to a codebook corresponding to different feedback types. In one example, the type of the codebook may include a codebook with a variable beamwidth and a codebook whose beamwidth is not adjustable. The codebook whose beam width is not adjustable further includes a Class A codebook, a Class B codebook, and a linear combination codebook.

In one example, the type of codebook may include both a codebook of variable beamwidth and a codebook of non-adjustable beamwidth. When the data traffic of the user is large and is basically static, the base station indicates, by using the physical layer or the MAC CE layer signaling, that the terminal uses a codebook whose beam width is not adjustable (for example, a class B codebook or a linear combination codebook). When the user has a certain moving speed, the base station uses the physical layer or MAC CE layer signaling to indicate to the terminal to generate a wider beam by using a codebook with a variable beam width. The base station passes the information of the downlink data transmission (for example, the base station receives the negative feedback acknowledgment (NACK) of the terminal more frequently) or the base station receives the information that the beam feedback of the terminal is blocked, and the base station passes the physical layer or the MAC CE layer signaling. The terminal is instructed to generate a wider beam by using a codebook with variable beamwidth to ensure robustness of data transmission.

The codebook parameter refers to the parameters required to generate the codebook. For example, the class A codebook includes N1, N2, O1, O2, config0-3, where N1 and N2 are the antenna numbers of two dimensions, and O1 and O2 are oversampling. Factor used to determine the codebook The total number of beams, config0-3, is used to indicate the selected beam pattern in the codebook. For a codebook with a variable beamwidth, the parameters include N1, N2, {P, C}. Where N1, N2 are the number of antennas in two dimensions, and {P, C} determines the codebook width.

Step 402: The base station sends configuration information of the codebook to the terminal by using physical layer signaling or MAC layer signaling.

In an example, after transmitting the configuration information of the codebook to the terminal, the base station sends a reference signal for channel state information measurement to the terminal; the configuration information of the codebook is used to indicate that the terminal feeds back the conforming code configuration to the base station according to the reference signal. Channel state information for the message. As shown in FIG. 4A, the base station configures multiple sets of CSI RS resources for the user, and the number of ports of different CSI RS resources is different. The base station indicates the codebook port information to the terminal through the physical layer or MAC CE signaling before the terminal performs the CSI measurement.

In another example, after determining that the configuration information of the codebook is changed, the base station configures configuration information of the new codebook for the terminal; the base station sends configuration information of the new codebook to the terminal by using physical layer signaling or MAC layer signaling. As shown in FIG. 4B, the base station configures multiple sets of CSI RS resources for the user, and the number of ports of different CSI RS resources is different. Before the CSI RS port changes, the base station indicates the code port information to the terminal through the physical layer or MAC CE signaling.

Step 403: The terminal determines a codebook set for channel state feedback according to the configuration information of the codebook.

In the embodiment of the present invention, the physical layer signaling or the MAC layer signaling indicates that the time interval can reach 1-10 scheduling units. Therefore, the configuration information that the base station can dynamically indicate the codebook to the terminal can be specifically implemented.

FIG. 5 is a schematic diagram of a communication method for configuring a codebook according to an embodiment of the present invention. The method may be based on the application scenario shown in FIG. 1 , where the base station dynamically configures the codebook to the terminal by using an implicit and explicit combination manner. Referring to Figure 5, the method includes:

Step 501: The base station sends the port configuration information of the CSI RS to the terminal by using physical layer signaling or MAC layer signaling.

Step 502: The terminal determines the number of ports of the codebook according to the port configuration information of the CSI RS.

Step 503: The base station sends configuration information of the codebook to the terminal by using physical layer signaling or MAC layer signaling, where the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, and parameters of the codebook. information.

Step 504: The terminal determines at least one of the following according to the configuration information of the codebook: a version of the codebook, a type of the codebook, and a parameter of the codebook.

Step 505: The terminal determines a codebook set for channel state feedback according to the number of ports of the codebook and/or at least one of the following: a version of the codebook, a type of the codebook, and a parameter of the codebook.

In the embodiment of the present invention, the steps 501 and 502 can be independently configured. The steps 503 and 504 can be independently configured. When the steps 501 and 502 and the steps 503 and 504 are combined to form a solution, the execution order is not specifically limited. For example, steps 501 and 502 may be performed before steps 503 and 504 may be performed, or steps 503 and 504 may be performed first to perform steps 501 and 502.

Figure 6 is a structural diagram of a base station according to an embodiment of the present invention. The base station is configured to perform a method for configuring a codebook according to an embodiment of the present invention. The base station includes: a processing module 601 and a communication module 602;

The processing module 601 is configured to configure configuration information of the codebook for the terminal, where the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, parameter information of the codebook, and port number information of the codebook. And the control communication module 602 transmits the configuration information of the codebook to the terminal through physical layer signaling or MAC layer signaling.

In an example, the processing module 601 is configured to: after the control communication module 602 sends the configuration information of the codebook to the terminal, to further send a reference signal for channel state information measurement to the terminal; the configuration information of the codebook is used to indicate The terminal feeds back channel state information conforming to the configuration information of the codebook to the base station according to the reference signal.

In an example, the processing module 601 is further configured to: after determining that the configuration information of the codebook changes, The terminal configures the configuration information of the new codebook, and the control communication module 602 sends the configuration information of the new codebook to the terminal through physical layer signaling or MAC layer signaling.

In one example, the port number information of the codebook includes port configuration information for a reference signal for channel state information measurement, and the port configuration information is used to indicate the number of ports of the codebook.

The base station may further include a storage module 603 for storing program codes and data of the base station.

The processing module 601 can be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication module 602 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a collective name and can include one or more interfaces. The storage module 603 can be a memory.

When the processing module 601 is a processor, the communication module 602 is a communication interface, and the storage module 603 is a memory, the base station involved in the embodiment of the present invention may be the base station shown in FIG.

Referring to FIG. 7, the base station 700 includes a processor 702, a communication interface 703, and a memory 701. Optionally, the base station 700 can also include a bus 704. The communication interface 703, the processor 702, and the memory 701 may be connected to each other through a bus 704. The bus 704 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (abbreviated). EISA) bus and so on. The bus 704 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.

Figure 8 is a structural diagram of a terminal according to an embodiment of the present invention, the terminal is used to perform the method for configuring a codebook provided by the embodiment of the present invention, the terminal includes: a processing module 801 and a communication module 802;

The communication module 802 is configured to receive configuration information of the codebook from the base station by using physical layer signaling or MAC layer signaling, where the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, and codebook. Parameter information and port number information of the codebook;

The processing module 801 is configured to determine a codebook set for channel state feedback according to the configuration information of the codebook.

In one example, the communication module 802 is further configured to: receive a reference signal for channel state information measurement from the base station; the processing module 801 is further configured to determine channel state information that conforms to the configuration information of the codebook according to the reference signal, and control the communication module. 802 feeds back channel state information to the base station.

The terminal may further include a storage module 803 for storing program codes and data of the terminal.

The processing module 801 can be a processor or a controller, and can be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor Logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The communication module 802 can be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a collective name and can include one or more interfaces. The storage module 803 can be a memory.

When the processing module 801 is a processor, the communication module 802 is a communication interface, and the storage module 803 is a memory, the terminal involved in the embodiment of the present invention may be the terminal shown in FIG.

Referring to FIG. 9, the terminal 900 includes a processor 902, a communication interface 903, and a memory 901. Optionally, the base station 900 can also include a bus 904. The communication interface 903, the processor 902, and the memory 901 may be connected to each other through a bus 904. The bus 904 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (abbreviated). EISA) bus and so on. The bus 904 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 9, but it does not mean that there is only one bus or one type of bus.

In addition, it should be noted that the base station can dynamically configure all or part of the information of the codebook to the terminal. It is also possible to pre-approve the effective time of the configuration information of the codebook. For example, the terminal receives the configuration information of the codebook, and takes effect after X subframes after receiving the information, X>=0. When the terminal does not receive the configuration information of the new codebook, the terminal can always adopt the configuration information of the existing codebook. The terminal may select a codebook for channel information feedback based on the configuration information of the codebook. For example, the terminal performs Precoding Matrix Indicator (PMI) feedback based on the configuration information of the codebook.

A person skilled in the art should further appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be performed by a program, and the program may be stored in a computer readable storage medium, which is non-transitory ( Non-transitory medium, such as random access memory, read only memory, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disc, and any combination thereof. The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto.

Claims

A method for configuring a codebook, the method comprising:

The base station configures configuration information of the codebook for the terminal, where the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, parameter information of the codebook, and port number information of the codebook;

The base station sends configuration information of the codebook to the terminal by using physical layer signaling or medium access control MAC layer signaling.
The method of claim 1 wherein:

After the method sends the configuration information of the codebook to the terminal, the method further includes: sending a reference signal for channel state information measurement to the terminal;

The configuration information of the codebook is used to instruct the terminal to feed back channel state information conforming to the configuration information of the codebook to the base station according to the reference signal.
The method of claim 1 or 2, wherein the method further comprises:

After determining, by the base station, that the configuration information of the codebook is changed, configuring, by the terminal, configuration information of a new codebook;

The base station sends configuration information of the new codebook to the terminal by using physical layer signaling or MAC layer signaling.
The method according to any one of claims 1 to 3, wherein the port number information of the codebook includes port configuration information for a reference signal for channel state information measurement, and the port configuration information is used to indicate The number of ports in the codebook.
A method for configuring a codebook, the method comprising:

The terminal receives the configuration information of the codebook from the base station by using the physical layer signaling or the medium access control MAC layer signaling, where the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, and code. The parameter information of the present and the port number information of the codebook;

The terminal determines a codebook set for channel state feedback according to the configuration information of the codebook.
The method of claim 5 wherein:

After receiving the configuration information of the codebook, the method further includes:

Receiving, by the terminal, a reference signal for channel state information measurement from the base station;

And the terminal returns, to the base station, channel state information that conforms to configuration information of the codebook according to the reference signal.
The method according to claim 5 or 6, wherein the port number information of the codebook includes port configuration information for a reference signal for channel state information measurement, and the port configuration information is used to indicate the codebook. The number of ports.
A base station, the base station includes: a processing module and a communication module;

The processing module is configured to configure configuration information of the codebook for the terminal, where the configuration information of the codebook includes at least one of the following: version information of the codebook, type information of the codebook, parameter information of the codebook, and codebook. Port number information; and controlling the communication module to transmit configuration information of the codebook to the terminal through physical layer signaling or media access control MAC layer signaling.
The base station of claim 8 wherein:

The processing module is configured to, after controlling the communication module to send the configuration information of the codebook to the terminal, to further send a reference signal for channel state information measurement to the terminal;

The configuration information of the codebook is used to indicate that the terminal feeds back the code according to the reference signal to the base station. Channel status information of the configuration information.
A base station according to claim 8 or 9, wherein:

The processing module is further configured to: after determining that the configuration information of the codebook changes, configure configuration information of a new codebook for the terminal, and control the communication module to pass physical layer signaling or MAC layer signaling. Sending configuration information of the new codebook to the terminal.
The base station according to any one of claims 8 to 10, wherein the port number information of the codebook includes port configuration information for a reference signal for channel state information measurement, and the port configuration information is used to indicate The number of ports in the codebook.
A terminal, comprising: a processing module and a communication module;

The communication module is configured to receive configuration information of the codebook from the base station by using physical layer signaling or medium access control MAC layer signaling, where the configuration information of the codebook includes at least one of the following: version information and code of the codebook The type information of the present, the parameter information of the codebook, and the port number information of the codebook;

The processing module is configured to determine a codebook set for channel state feedback according to the configuration information of the codebook.
The terminal of claim 12, wherein:

The communication module is further configured to receive a reference signal for channel state information measurement from the base station;

The processing module is further configured to determine channel state information that conforms to the configuration information of the codebook according to the reference signal, and control the communication module to feed back the channel state information to the base station.
The terminal according to claim 12 or 13, wherein the port number information of the codebook includes port configuration information for a reference signal for channel state information measurement, and the port configuration information is used to indicate the codebook. The number of ports.