CN115412139A

CN115412139A - Channel information reporting method and related device

Info

Publication number: CN115412139A
Application number: CN202110590220.4A
Authority: CN
Inventors: 吴晔; 金黄平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-11-29
Also published as: WO2022247483A1

Abstract

The application provides a channel information reporting method and a related device, wherein the method comprises the following steps: receiving a first reference signal from a network device; sending first information to the network device, where the first information indicates a first correspondence relationship, where the first correspondence relationship includes a correspondence relationship between a first rank and a first antenna port set corresponding to the first reference signal, and the first correspondence relationship is measured by the first reference signal. By implementing the embodiment of the application, the accurate feedback of the channel state in the ELAA scene is realized.

Description

Channel information reporting method and related device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a channel information reporting method and a related apparatus.

Background

In an Extra Large Aperture Array (ELAA), due to the large aperture of the antenna, the channel has a spatially non-stationary characteristic, which makes the scatterers (multipath) seen by each antenna not identical, as shown in fig. 1, for the terminal device 1, the scatterers scatter C1 can be seen by the antenna panel A1, and scatter C1 and scatter C2 can be seen by the antenna panel A2. That is, in the ELAA scenario, due to the spatially non-stationary characteristic, the channel characteristics corresponding to different antenna panels or antennas or antenna clusters may be different.

Generally, a terminal device may feed back CSI to a base station after performing Channel State Information (CSI) measurement on an antenna port issuing a channel state information reference signal (CSI-RS). The CSI may generally include a precoding vector indicator (PMI), a Channel Quality Indicator (CQI), and a Rank Indicator (RI). That is, in the ELAA scenario, the terminal device also feeds back CSI to the base station. However, in an ELAA scenario, channel characteristics corresponding to different antenna panels or antennas or antenna clusters are different, and if the terminal device still feeds back CSI to the base station, the channel state in the ELAA scenario may not be accurately fed back. Therefore, how to realize accurate feedback of the channel state in the ELAA scenario becomes a technical problem to be solved urgently at the present stage.

Disclosure of Invention

The application provides a channel information reporting method and a related device, which realize accurate feedback of a channel state in an ELAA scene.

In a first aspect, a method for reporting channel information is provided, including:

receiving a first reference signal from a network device;

sending first information to the network device, where the first information indicates a first correspondence, the first correspondence includes a correspondence between a first rank and a first antenna port set corresponding to the first reference signal, and the first correspondence is measured by the first reference signal.

It can be seen that, in the above technical solution, the terminal device may receive the first reference signal from the network device, so that the terminal device may send the first information indicating the first corresponding relationship to the network device. It can be understood that, since the first corresponding relationship includes a corresponding relationship between the first rank and the first antenna port set corresponding to the first reference signal, and the first corresponding relationship is measured by the first reference signal, the feedback of the corresponding relationship between the first rank and the first antenna port set corresponding to the first reference signal in the ELAA scenario is realized, so that the feedback of the channel state is more accurate.

Optionally, the first information further indicates a second corresponding relationship, where the second corresponding relationship includes a corresponding relationship between a second rank and a second antenna port set corresponding to the first reference signal, and the second corresponding relationship is measured by the first reference signal.

It can be seen that, in the above technical solution, the first information further indicates a second corresponding relationship, where the second corresponding relationship includes a corresponding relationship between a second rank and a second antenna port set corresponding to the first reference signal, that is, the terminal device may also report the second corresponding relationship, so that the network device may obtain different corresponding relationships, thereby improving accuracy of channel state feedback.

Optionally, the antenna ports in the first antenna port set are partially identical to the antenna ports in the second antenna port set.

Optionally, the antenna ports in the first antenna port set are included in a first logical antenna port group, the first logical antenna port group includes at least one antenna port group, and the first information further indicates a correspondence between rank numbers corresponding to the first logical antenna port group and the first logical antenna port group.

It can be seen that, in the above technical solution, overhead can be saved by feeding back the corresponding relationship between the first logical antenna port group and the rank number corresponding to the first logical antenna port group.

Optionally, the antenna ports in the second antenna port set are included in a second logical antenna port group, the second logical antenna port group includes at least one antenna port group, and the first information further indicates a correspondence between rank numbers corresponding to the second logical antenna port group and the second logical antenna port group.

It can be seen that, in the above technical solution, by feeding back the correspondence between the second logical antenna port group and the rank number corresponding to the second logical antenna port group, overhead can be saved.

Optionally, the antenna port group in the first logical antenna port group is partially the same as the antenna port group in the second logical antenna port group.

Optionally, the first information further indicates a strength order of a first signal quality and a second signal quality, where the first signal quality corresponds to the first rank and the second signal quality corresponds to the second rank.

In a second aspect, a method for reporting channel information is provided, including:

sending a first reference signal to the terminal equipment;

receiving first information from the terminal device, the first information indicating a first correspondence relationship, the first correspondence relationship including a correspondence relationship between a first rank and a first antenna port set corresponding to the first reference signal, the first correspondence relationship being measured by the first reference signal.

Optionally, the first information further indicates a second correspondence relationship, where the second correspondence relationship includes a correspondence relationship between a second rank and a second antenna port set corresponding to the first reference signal, and the second correspondence relationship is measured by the first reference signal.

It can be seen that, in the above technical solution, by feeding back the correspondence between the first logical antenna port group and the rank number corresponding to the first logical antenna port group, overhead can be saved.

In a third aspect, a terminal device is provided, where the terminal device includes a transceiver module, and the transceiver module is configured to transmit and receive data

Receiving a first reference signal from a network device;

sending first information to the network device, where the first information indicates a first correspondence relationship, where the first correspondence relationship includes a correspondence relationship between a first rank and a first antenna port set corresponding to the first reference signal, and the first correspondence relationship is measured by the first reference signal.

In a fourth aspect, a network device is provided, which comprises a transceiver module for receiving and transmitting data

Sending a first reference signal to the terminal equipment;

Optionally, the antenna ports in the first antenna port set are partially the same as the antenna ports in the second antenna port set.

In a fifth aspect, there is provided a communication device comprising a processor, a memory, an input interface for receiving information from a communication device other than the communication device, and an output interface for outputting information to the communication device other than the communication device, the processor invoking a computer program stored in the memory to implement the method of the first or second aspect.

In a possible design, the communication device may be a chip or a chip-containing apparatus implementing the method of the first or second aspect.

A sixth aspect provides a computer readable storage medium having stored thereon a computer program for implementing the method according to any one of the first or second aspects when the computer program is run.

In a seventh aspect, a communication system is provided, where the communication system includes the terminal device and/or the network device.

Drawings

Reference will now be made in brief to the drawings that are needed in describing embodiments or prior art.

Wherein:

fig. 1 is a schematic diagram of visible scatterers of different antenna panels in an ELAA scene;

fig. 2 is an infrastructure of a communication system according to an embodiment of the present application;

fig. 3 is a schematic hardware structure diagram of a communication device applicable to the embodiments of the present application;

fig. 4 is a schematic flow chart of a channel information reporting method according to an embodiment of the present application;

fig. 5 is a schematic diagram of an Orthogonal Frequency Division Multiplexing (OFDM) symbol according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a simplified network device according to an embodiment of the present application.

Detailed Description

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. In which the terms "system" and "network" in the embodiments of the present application may be used interchangeably. Unless otherwise specified, "/" indicates a relationship where the objects linked before and after are "or", e.g., a/B may represent a or B; in the present application, "and/or" is only an association relationship describing an association object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. Also, in the description of the present application, "a plurality" means two or more than two unless otherwise specified. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple. In addition, in order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish identical items or similar items with substantially identical functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather mean "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

Some partial nouns (or communication terms) referred to in the present application are explained below.

1. First reference signal

The first reference signal may include: a channel state information reference signal (CSI-RS), a cell specific reference signal (CS-RS), a UE specific reference signal (US-RS), a demodulation reference signal (DMRS), and a synchronization signal/physical broadcast channel block (SS/PBCH block) or other reference signals, which are not limited herein. The SS/PBCH block may be referred to as a Synchronization Signal Block (SSB) for short.

2. Antenna port

An antenna port may be referred to as a port for short. It is understood as a transmitting antenna recognized by the receiving device, or a transmitting antenna that is spatially distinguishable. One antenna port may be preconfigured for each virtual antenna, each virtual antenna may be a weighted combination of multiple physical antennas, each antenna port may correspond to one reference signal, and thus, each antenna port may be referred to as a port of one reference signal, such as a CSI-RS port or the like.

For example, the first set of antenna ports corresponding to the first reference signal may be understood as: a first set of CSI-RS ports to which the first reference signal corresponds. Similarly, the second antenna port set corresponding to the first reference signal may be understood as: and the second CSI-RS port set corresponding to the first reference signal.

Herein, in the present application, an antenna port set may include one or more antenna ports. The antenna port set includes one or more antenna ports, which may be understood as: the antenna port set includes one or more antenna port groups, one antenna port group including one or more antenna ports.

Illustratively, the first set of antenna ports includes 10 antenna ports. The first set of antenna ports comprises 10 antenna ports, which can be understood as: the first set of antenna ports includes 2 antenna port groups, and one antenna port group may include 5 antenna ports.

It should be noted that, in this application, the number of antenna ports specifically included in an antenna port set or an antenna port group may be a protocol specification or a base station configuration, and is not limited herein.

3. Quasi co-location (QCL) assumption

The definition of QCL is "two antenna ports are referred to as quasi co-located if the characteristics of the channel through which the symbol on one antenna port is transmitted can be deduced from the channel through which the symbol on the other antenna port is transmitted". It is to be understood that, in the present application, the QCL assumptions of the first antenna port set and the second antenna port set may be the same or different, and are not limited herein.

To facilitate an understanding of the present application, relevant technical knowledge related to the embodiments of the present application is introduced herein.

In a new air interface (NR) system, channel State Information (CSI) measurement of a multi-polarized antenna (MIMO) does not consider a channel non-stationary characteristic (i.e., CSI of MIMO is stationary in the NR system). After CSI measurement is performed on all CSI-RS ports of MIMO (the number of all CSI-RS ports of MIMO is D), the terminal device may feed back CSI to the base station. Illustratively, the terminal device may feed back a Rank Indicator (RI) to the base station. In case of RI being fixed, the size of precoding vectors of each rank (rank) is equal. For example, RI =2, a quantized Precoding Matrix (PMI) corresponding to a precoding vector indicator (PMI) is as follows: | v ₁ v ₂ L. Wherein the precoding vector v ₁ Corresponding to the first rank, whose size is dx 1; precoding vector v ₂ Corresponding to the second rank, it has a size of D × 1. I.e. the precoding vectors of the first rank and the second rank are equal in size. However, in the ELAA scenario, the channel characteristics corresponding to different antenna panels or antennas or antenna clusters are different, i.e. the size of the precoding vector of each rank may be different. If the terminal device still feeds back the RI to the base station, the channel state in the ELAA scene may not be accurately fed back. Therefore, how to achieve accurate feedback of the channel state in the ELAA scenario becomes a technical problem to be solved urgently at the present stage.

Based on this, an embodiment of the present application provides a method for reporting channel information to solve the above problem, and the following describes the embodiment of the present application in detail.

It should be understood that the technical solution of the embodiment of the present application may be applied to an ELAA scene, a scene of combined Transmission and Reception Point (TRP) or other scenes, and is not limited herein. The TRP is used to send or receive signals, and the transmission and reception point includes a Transmission Point (TP) or a Reception Point (RP). Wherein TP is used for receiving signals and RP is used for transmitting signals.

It can be understood that the technical solution of the embodiment of the present application may be applied to a Long Term Evolution (LTE) architecture, a fifth generation mobile communication technology (5 g), a 4.5generation mobile communication technology (4.5 g), a Wireless Local Area Network (WLAN) system, and the like. The technical solution of the embodiment of the present application may also be applied to other future communication systems, for example, a 6G communication system, etc., in which the functions may be kept the same, but the names may be changed.

The following describes an infrastructure of a communication system provided in an embodiment of the present application. Referring to fig. 2, fig. 2 is an infrastructure of a communication system according to an embodiment of the present application. As shown in fig. 2, the communication system may include one or more network devices 10 (only 1 shown) and one or more terminal devices 20 in communication with each network device 10. Fig. 2 is a schematic diagram, and does not limit the application scenarios of the technical solutions provided in the present application.

The network device 10 is an entity on the network side for transmitting signals, or receiving signals, or both. The network device 10 may be a device deployed in a Radio Access Network (RAN) and providing a wireless communication function for the terminal device 20, and for example, may be a Transmission Reception Point (TRP), a base station, and various forms of control nodes. For example, a network controller, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, and the like. Specifically, the network device may be a macro base station, a micro base station (also referred to as a small station), a relay station, an Access Point (AP), 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), a Base Band Unit (BBU), a transmission point (TRP), a Transmission Point (TP), a mobile switching center, and the like in various forms, and may also be an antenna panel of the base station. The control node may be connected to multiple base stations, and configure resources for multiple terminals under the coverage of multiple base stations. In systems using different radio access technologies, the names of devices that function as base stations may differ. For example, the network device may be an evolved node B (eNB or eNodeB) in an LTE system, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or a gNB in 5G, or the network device 10 may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a network after 5G, or a network device in a future evolved PLMN network, and the like, and the specific name of the network device is not limited in the present application.

The terminal device 20 is a user-side entity for receiving signals, or transmitting signals, or both. Terminal device 20 is operative to provide one or more of voice services and data connectivity services to a user. The terminal device 20 may be a device that includes a wireless transceiving function and can cooperate with a network device to provide a communication service to a user. Specifically, terminal equipment 20 may refer to User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a terminal, a wireless communication device, a user agent, or a user equipment. The terminal device 20 may also be a wireless terminal in a wireless network, a wireless network in an internet of things (IoT), a Station (ST) in a WLAN, a cellular phone (cellular phone), a smart phone (smart phone), a cordless phone, a wireless data card, a tablet, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a laptop (laptop computer), a Machine Type Communication (MTC) terminal, a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device (also referred to as a wearable smart device), a Virtual Reality (VR) terminal, an augmented reality (intelligent) terminal, an industrial intelligent control (AR) terminal, a remote control terminal in a wireless network in a city, a wireless network in a wireless network, and the like. The terminal device 20 may also be a device-to-device (D2D) device, such as an electric meter, a water meter, etc. The terminal device 20 may also be a terminal in a 5G system, and may also be a terminal in a next-generation communication system, which is not limited in this embodiment of the present application.

The technical scheme provided by the embodiment of the application can be applied to various system architectures. The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

Optionally, each network element (e.g., the network device 10, the terminal device 20, etc.) in fig. 2 may be implemented by one device, may also be implemented by multiple devices together, and may also be a functional module in one device, which is not specifically limited in this embodiment of the present application. It is understood that the above functions may be either network elements in a hardware device, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform).

For example, each device in fig. 2 may be implemented by the communication apparatus 300 in fig. 3. Fig. 3 is a schematic diagram illustrating a hardware structure of a communication device according to an embodiment of the present disclosure. The communication device 300 includes at least one processor 301, a communication link 302, a memory 303, and at least one communication interface 304.

The processor 301 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present disclosure.

The communication link 302 may include a path for transmitting information between the aforementioned components.

Communication interface 304 is any transceiver or other device (e.g., an antenna, etc.) for communicating with other devices or communication networks, such as an ethernet, RAN, wireless Local Area Network (WLAN), etc.

The memory 303 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, 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. The memory may be separate and coupled to the processor via a communication line 302. The memory may also be integral to the processor. The memory provided by the embodiment of the application can be generally nonvolatile.

The memory 303 is used for storing computer-executable instructions for executing the present invention, and is controlled by the processor 301. The processor 301 is configured to execute computer-executable instructions stored in the memory 303 to implement the methods provided by the embodiments described below.

Optionally, the computer-executable instructions in this embodiment may also be referred to as application program codes, which is not specifically limited in this embodiment.

In one possible implementation, processor 301 may include one or more CPUs, such as CPU0 and CPU1 in fig. 3.

In one possible implementation, the communication device 300 may include multiple processors, such as the processor 301 and the processor 307 in fig. 3. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores that process data (e.g., computer program instructions).

In one possible implementation, the communications apparatus 300 may further include an output device 305 and an input device 306. The output device 305 is in communication with the processor 301 and may display information in a variety of ways. For example, the output device 305 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 306 is in communication with the processor 301 and may receive user input in a variety of ways. For example, the input device 306 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

The communication apparatus 300 may be a general-purpose device or a special-purpose device. In a specific implementation, the communication device 300 may be a desktop computer, a portable computer, a network server, a Personal Digital Assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a device with a similar structure as in fig. 3. The embodiment of the present application does not limit the type of the communication apparatus 300.

The technical solutions provided by the embodiments of the present application are described below with reference to the drawings.

Referring to fig. 4, fig. 4 is a flowchart illustrating a method for reporting channel information according to an embodiment of the present disclosure. The terminal device in fig. 4 is the terminal device 20 in fig. 2, and the network device in fig. 4 is the network device 10 in fig. 2. As shown in fig. 4, the method includes, but is not limited to, the steps of:

401. the network equipment sends a first reference signal to the terminal equipment.

Accordingly, the terminal device receives the first reference signal from the network device.

The first reference signal may refer to the related description, which is not repeated herein.

402. The terminal device sends first information to the network device, the first information indicates a first corresponding relationship, the first corresponding relationship includes a corresponding relationship between a first rank and a first antenna port set corresponding to a first reference signal, and the first corresponding relationship is obtained by measuring the first reference signal.

Accordingly, the network device receives the first information from the terminal device.

Optionally, the first antenna port set corresponding to the first reference signal is a subset of all antenna port sets corresponding to the first reference signal. It can be understood that all the antenna port sets corresponding to the first reference signal are the antenna port sets issuing the first reference signal. That is, in the present application, an antenna port set is an antenna port set of a network device.

The first antenna port set may include one or more antenna ports, which is not limited herein.

Optionally, the first antenna port set includes one or more antenna ports, which may be understood as: the first set of antenna ports may include one or more antenna port groups, and one antenna port group may include one or more antenna ports.

Optionally, the first correspondence includes a correspondence between a first rank and a first antenna port set corresponding to the first reference signal, which may be understood as: the first correspondence includes a correspondence between the first index and a first set of antenna ports corresponding to the first reference signal. Wherein the first index is used to indicate a first rank. It is understood that the first rank may be identified in other manners in the present application, and is not limited herein.

Wherein, the first corresponding relation is measured by the first reference signal, and can be understood as: the first rank is measured from a first reference signal, which corresponds to the first antenna port set.

It can be seen that, in the above technical solution, the terminal device may receive the first reference signal from the network device, so that the terminal device may send the first information indicating the first corresponding relationship to the network device. It can be understood that, since the first correspondence includes a correspondence between the first rank and the first antenna port set corresponding to the first reference signal, and the first correspondence is obtained by measuring the first reference signal, the feedback of the correspondence between the first rank and the first antenna port set corresponding to the first reference signal in the ELAA scenario is realized, so that the feedback of the channel state is more accurate.

Optionally, the second antenna port set corresponding to the first reference signal is a subset of all the antenna port sets corresponding to the first reference signal. It is to be understood that, in the present application, the union of the first antenna port set and the second antenna port set may be a subset or a full set of all antenna port sets corresponding to the first reference signal, and is not limited herein.

The second antenna port set may include one or more antenna ports, which is not limited herein.

Optionally, the second set of antenna ports includes one or more antenna ports, which may be understood as: the second set of antenna ports may include one or more antenna port groups, and one antenna port group may include one or more antenna ports.

It should be noted that, in the present application, QCL assumptions of the first antenna port set and the second antenna port set may be the same or different, and are not limited herein.

Optionally, the second correspondence includes a correspondence between a second rank and a second antenna port set corresponding to the first reference signal, and it can be understood that: the second correspondence includes a correspondence between the second index and a second set of antenna ports corresponding to the first reference signal. Wherein the second index is used to indicate a second rank. It is understood that the second rank may be identified in other manners in the present application, and is not limited herein.

Optionally, the first antenna port set may include one or more antenna port groups, and the second antenna port set may include one or more antenna port groups. In this case, the first correspondence includes a correspondence between the first index and a first set of antenna ports corresponding to the first reference signal, which may be understood as: the first correspondence includes a correspondence between the first index and one or more antenna port groups included in the first antenna port set. Similarly, the second corresponding relationship includes a corresponding relationship between the second index and the second antenna port set corresponding to the first reference signal, which can be understood as: the second correspondence includes a correspondence between the second index and one or more antenna port groups included in the second antenna port set.

Wherein, the second corresponding relation is measured by the first reference signal, and can be understood as: the second rank is measured from a first reference signal, which may correspond to the second set of antenna ports.

Optionally, the antenna ports in the first antenna port set are partially the same as the antenna ports in the second antenna port set, or the antenna ports in the first antenna port set are all different from the antenna ports in the second antenna port set, or the antenna ports in the first antenna port set are all the same as the antenna ports in the second antenna port set, which is not limited herein.

For example, if the first reference signal corresponds to all antenna port sets, the antenna port set 1, the antenna port set 2, the antenna port set 3, and the antenna port set 4 may be included. Wherein each of the antenna port group 1, the antenna port group 2, the antenna port group 3, and the antenna port group 4 may include, for example, 4 CSI-RS ports. Specifically, referring to fig. 5, fig. 5 is a schematic diagram of an Orthogonal Frequency Division Multiplexing (OFDM) symbol provided in this embodiment of the present application. As can be seen, antenna port group 1, antenna port group 2, antenna port group 3, and antenna port group 4 may include 4 CSI-RS ports, respectively. In this case, the correspondence indicated by the first information may refer to table 1 or table 2 or table 3 or table 4, for example.

Table 1: the corresponding relation indicated by the first information

	Antenna port set 1	Antenna port group 2	Antenna port group 3	Antenna port group 4
					First index 0	Y	Y	Y
Second index 1		Y	Y

In table 1, the first antenna port set may include an antenna port group 2, an antenna port group 3, and an antenna port group 4, the second antenna port set includes an antenna port group 2 and an antenna port group 3, the first correspondence may include a correspondence between the first index and the antenna port group 2, the antenna port group 3, and the antenna port group 4 included in the first antenna port set, and the second correspondence includes a correspondence between the second index and the antenna port group 2 and the antenna port group 3 included in the second antenna port set. That is, it can be seen that the antenna ports in the first set of antenna ports are partially identical to the antenna ports in the second set of antenna ports. In addition, as can be seen from table 1, the first index (the first index is 0) corresponds to each of the antenna port group 2, the antenna port group 3, and the antenna port group 4. Then, the precoding vector size corresponding to the first rank indicated by the first index (the first index is 0) is the sum of the numbers of all antenna ports in the antenna port group 2, the antenna port group 3, and the antenna port group 4. That is, the first rank indicated by the first index (the first index is 0) corresponds to a precoding vector size of 12 × 1. The second index (the second index is 1) has a correspondence with both the antenna port group 2 and the antenna port group 3. Then, the precoding vector size corresponding to the second rank indicated by the second index (the second index is 1) is the sum of the numbers of all antenna ports in the antenna port group 2 and the antenna port group 3. That is, the precoding vector size corresponding to the second rank indicated by the second index (the second index is 1) is 8 × 1.

Table 2: the corresponding relation indicated by the first information

	Antenna port group 1	Antenna port group 2	Antenna port group 3	Antenna port group 4
					First index 2	Y	Y
Second index 3			Y	Y

In table 2, the first antenna port set may include an antenna port group 2 and an antenna port group 3, the second antenna port set includes an antenna port group 3 and an antenna port group 4, the first corresponding relationship may include a corresponding relationship between the first index and the antenna port group 2 and the antenna port group 3 included in the first antenna port set, and the second corresponding relationship includes a corresponding relationship between the second index and the antenna port group 3 and the antenna port group 4 included in the second antenna port set. That is, it can be seen that the antenna ports in the first set of antenna ports are partially identical to the antenna ports in the second set of antenna ports. In addition, in combination with table 2, it can be seen that the first index (the first index is 2) has a correspondence relationship with both the antenna port group 2 and the antenna port group 3. Then, the precoding vector size corresponding to the first rank indicated by the first index (the first index is 2) is the sum of the numbers of all antenna ports in the antenna port group 2 and the antenna port group 3. That is, the precoding vector size corresponding to the first rank indicated by the first index (the first index is 2) is 8 × 1. The second index (the second index is 3) has a correspondence relationship with both the antenna port group 3 and the antenna port group 4. Then, the precoding vector size corresponding to the second rank indicated by the second index (the second index is 3) is the sum of the numbers of all antenna ports in the antenna port group 3 and the antenna port group 4. That is, the precoding vector size corresponding to the second rank indicated by the second index (the second index is 3) is 8 × 1.

Table 3: the corresponding relation indicated by the first information

	Antenna port group 1	Antenna port group 2	Antenna port group 3	Antenna port group 4
					First index 4 or 5	Y
Second index 6				Y

In table 3, the first antenna port set may include an antenna port group 3, the second antenna port set includes an antenna port group 4, the first corresponding relationship may include a corresponding relationship between the first index and the antenna port group 3 included in the first antenna port set, and the second corresponding relationship includes a corresponding relationship between the second index and the antenna port group 4 included in the second antenna port set. That is, it can be seen that the antenna ports in the first set of antenna ports are all different from the antenna ports in the second set of antenna ports. In addition, referring to table 3, it can be seen that the first index (the first index is 4 or 5) and the antenna port group 3 have a corresponding relationship. Then, the precoding vector size corresponding to the first rank indicated by the first index (the first index is 4 or 5) is the sum of all the antenna ports in the antenna port group 3. That is, the first rank indicated by the first index (the first index is 4 or 5) corresponds to a precoding vector size of 4 × 1. The second index (the second index is 6) corresponds to the antenna port group 4. Then, the precoding vector size corresponding to the second rank indicated by the second index (the second index is 6) is the sum of all the antenna ports in the antenna port group 4. That is, the precoding vector size corresponding to the second rank indicated by the second index (the second index is 6) is 4 × 1.

Table 4: the corresponding relation indicated by the first information

	Antenna port group 1	Antenna port group 2	Antenna port group 3	Antenna port group 4
					First index 5	Y
Second index 5			Y

In table 4, the first antenna port set may include an antenna port group 3, the second antenna port set includes the antenna port group 3, the first corresponding relationship may include a corresponding relationship between the first index and the antenna port group 3 included in the first antenna port set, and the second corresponding relationship includes a corresponding relationship between the second index and the antenna port group 3 included in the second antenna port set. That is, it can be seen that the antenna ports in the first set of antenna ports are all the same as the antenna ports in the second set of antenna ports. In addition, the first index (the first index is 5) and the antenna port group 3 have a correspondence relationship. Then, the precoding vector size corresponding to the first rank indicated by the first index (the first index is 5) is the sum of all the antenna ports in the antenna port group 3. That is, the precoding vector size corresponding to the first rank indicated by the first index (the first index is 5) is 4 × 1. The second index (the second index is 5) corresponds to the antenna port group 3. Then, the precoding vector size corresponding to the second rank indicated by the second index (the second index is 5) is the sum of all the antenna ports in the antenna port group 3. That is, the precoding vector size corresponding to the second rank indicated by the second index (the second index is 5) is 4 × 1.

Wherein, the antenna ports in the first antenna port set are included in a first logical antenna port group, and the first logical antenna port group includes at least one antenna port group, which can be understood as: the antenna ports of the first set of antenna ports include at least one antenna port group included in the first logical antenna port group.

For example, the first logical antenna port group may include a first antenna port group and a second antenna port group, and the antenna ports in the first antenna port set may be included in the first antenna port group and/or the second antenna port group, which is not limited herein.

Optionally, the first information further indicates a correspondence between the first logical antenna port group and a rank number corresponding to the first logical antenna port group, which can be understood as: the first information further indicates a correspondence between a third index indicating the first logical antenna port group and a rank number corresponding to the first logical antenna port group. It is understood that, in the present application, the first logical antenna port group may also be identified in other manners, which is not limited herein.

Optionally, the antenna ports in the second antenna port set are included in a second logical antenna port group, the second logical antenna port group includes at least two antenna port groups, and the first information further indicates a correspondence between rank numbers corresponding to the second logical antenna port group and the second logical antenna port group.

Wherein, the antenna ports in the second antenna port set are included in a second logical antenna port group, and the second logical antenna port group includes at least one antenna port group, which can be understood as: the antenna ports of the second set of antenna ports comprise at least one antenna port group comprised in the second logical antenna port group.

For example, the second logical antenna port group may include a third antenna port group and a fourth antenna port group, and the antenna ports in the second antenna port set may be included in the third antenna port group and/or the fourth antenna port group, which is not limited herein.

Optionally, the first information further indicates a correspondence between rank numbers corresponding to the second logical antenna port group and the second logical antenna port group, and it can be understood that: the first information further indicates a correspondence between a fourth index indicating the second logical antenna port group and a rank number corresponding to the second logical antenna port group. It is understood that, in the present application, the second logical antenna port group may also be identified in other manners, which is not limited herein.

Optionally, the antenna port group in the first logical antenna port group is partially the same as the antenna port group in the second logical antenna port group, or the antenna port group in the first logical antenna port group is completely different from the antenna port group in the second logical antenna port group, or the antenna port group in the first logical antenna port group is completely the same as the antenna port group in the second logical antenna port group, which is not limited herein.

For example, if the first reference signal corresponds to all antenna port sets, the antenna port set may include an antenna port group 1, an antenna port group 2, an antenna port group 3, and an antenna port group 4. Wherein each of the antenna port group 1, the antenna port group 2, the antenna port group 3, and the antenna port group 4 may include, for example, 4 CSI-RS ports. The different logical antenna port groups and their indices may for example refer to table 5. In conjunction with table 5, it can be seen that the corresponding indexes of different logical antenna port groups are different.

Table 5: different logical antenna port groups and their indices

Index	Logical antenna port group
		0	Antenna port group 1, antenna port group 2, antenna port group 3, and antenna port group 4
1	Antenna port group 1, antenna port group 2, and antenna port group 3
		2	Antenna port group 1 and antenna portGroup 2 and antenna port group 4
……	……
		4	Antenna port group 2, antenna port group 3, and antenna port group 4
5	Antenna port group 1 and antenna port group 2
		6	Antenna port group 1 and antenna port group 3
……	……
		10	Antenna port group 3 and antenna port group 4
11	Antenna port group 1
		12	Antenna port group 2
13	Antenna port group 3
		14	Antenna port group 4

In the case of combining table 5, the correspondence between the third index and the rank number corresponding to the first logical antenna port group, and the correspondence between the fourth index and the rank number corresponding to the second logical antenna port group may refer to table 6 or table 7 or table 8 or table 9, for example. As can be appreciated, the first logical antenna port group in table 6 includes the first antenna port set in table 1, and the second logical antenna port group in table 6 includes the second antenna port set in table 1; the first logical antenna port group in table 7 includes the first set of antenna ports in table 2, and the second logical antenna port group in table 7 includes the second set of antenna ports in table 2; the first logical antenna port group in table 8 includes the first set of antenna ports in table 3, and the second logical antenna port group in table 8 includes the second set of antenna ports in table 3; the first logical antenna port group in table 9 includes the first antenna port set in table 4, and the second logical antenna port group in table 9 includes the second antenna port set in table 4.

Table 6: a correspondence between the third index and a rank number corresponding to the first logical antenna port group, and a correspondence between the fourth index and a rank number corresponding to the second logical antenna port group

In combination with table 6, it can be seen that the first logical antenna port group includes antenna port group 2, antenna port group 3, and antenna port group 4, and the second logical antenna port group includes antenna port group 2 and antenna port group 3, that is, the antenna port group in the first logical antenna port group is partially the same as the antenna port group in the second logical antenna port group. The third index (the third index is 4) corresponds to the rank number (1) corresponding to the first logical antenna port group, and the fourth index (the fourth index is 8) corresponds to the rank number (2) corresponding to the second logical antenna port group.

Table 7: a correspondence between the third index and the rank number corresponding to the first logical antenna port group, and a correspondence between the fourth index and the rank number corresponding to the second logical antenna port group

In combination with table 7, it can be seen that the first logical antenna port group includes antenna port group 2 and antenna port group 3, and the second logical antenna port group includes antenna port group 3 and antenna port group 4, that is, the antenna port groups in the first logical antenna port group and the antenna port groups in the second logical antenna port group are partially the same. The third index (the third index is 8) corresponds to the rank number (2) corresponding to the first logical antenna port group, and the fourth index (the fourth index is 10) corresponds to the rank number (1) corresponding to the second logical antenna port group.

Table 8: a correspondence between the third index and the rank number corresponding to the first logical antenna port group, and a correspondence between the fourth index and the rank number corresponding to the second logical antenna port group

In combination with table 8, it can be seen that the first logical antenna port group includes antenna port group 3, and the second logical antenna port group includes antenna port group 4, that is, the antenna port group in the first logical antenna port group and the antenna port group in the second logical antenna port group are all different. The third index (13 for the third index) corresponds to the rank number (2) corresponding to the first logical antenna port group, and the fourth index (14 for the fourth index) corresponds to the rank number (1) corresponding to the second logical antenna port group.

Table 9: a correspondence between the third index and a rank number corresponding to the first logical antenna port group, and a correspondence between the fourth index and a rank number corresponding to the second logical antenna port group

In combination with table 9, it can be seen that the first logical antenna port group includes antenna port group 3, and the second logical antenna port group includes antenna port group 3, that is, the antenna port group in the first logical antenna port group is the same as the antenna port group in the second logical antenna port group. In addition, the third index and the fourth index are the same.

Optionally, the first information further indicates a correspondence between the number of antenna port groups included in the first logical antenna port group and a rank number corresponding to the first logical antenna port group, and/or the first information further indicates a correspondence between the number of antenna port groups included in the first logical antenna port group and the first logical antenna port group. The first information further indicates a correspondence between the number of antenna port groups included in the first logical antenna port group and a rank number corresponding to the first logical antenna port group, which may be understood as: the first information further indicates a correspondence between a fifth index and a rank number corresponding to the first logical antenna port group, and the fifth index is used to indicate the number of antenna port groups included in the first logical antenna port group. The first information further indicates a correspondence between the number of antenna port groups included in the first logical antenna port group and the first logical antenna port group, which may be understood as: the first information further indicates a correspondence between the fifth index and the first logical antenna port group, or the first information further indicates a correspondence between the fifth index and the third index.

Optionally, the first information further indicates a correspondence between the number of antenna port groups included in the second logical antenna port group and a rank number corresponding to the second logical antenna port group, and/or the first information further indicates a correspondence between the number of antenna port groups included in the second logical antenna port group and the second logical antenna port group. The first information further indicates a correspondence between the number of antenna port groups included in the second logical antenna port group and a rank number corresponding to the second logical antenna port group, and may be understood as: the first information further indicates a correspondence between a sixth index and a rank number corresponding to the second logical antenna port group, where the sixth index is used to indicate the number of antenna port groups included in the second logical antenna port group. The first information further indicates a correspondence between the number of antenna port groups included in the second logical antenna port group and the second logical antenna port group, which may be understood as: the first information further indicates a correspondence between the sixth index and the second logical antenna port group, or the first information further indicates a correspondence between the sixth index and the fourth index.

For example, in conjunction with table 5, the number of antenna port groups included in different logical antenna port groups and their indexes may refer to table 10.

Table 10: number of antenna port groups included in different logical antenna port groups and indices thereof

Index	Number of antenna port groups included in logical antenna port group
		0	4
1	3
		2	2
3	1

In the case of combining table 5, table 6, and table 10, the number of antenna port groups included in the first logical antenna port group is 3, and the number of antenna port groups included in the second logical antenna port group is 2, that is, the fifth index is 1, and the sixth index is 2. In the case of combining table 5, table 7, and table 10, the number of antenna port groups included in the first logical antenna port group and the number of antenna port groups included in the second logical antenna port group are both 2, that is, the fifth index and the sixth index are both 2. In the case of combining table 5, table 8, and table 10, the number of antenna port groups included in the first logical antenna port group and the number of antenna port groups included in the second logical antenna port group are both 1, that is, the fifth index and the sixth index are both 3. In the case of combining table 5, table 9, and table 10, the number of antenna port groups included in the first logical antenna port group and the number of antenna port groups included in the second logical antenna port group are both 1, that is, the fifth index and the sixth index are both 3.

Optionally, the first information further indicates a strength order of a first signal quality and a second signal quality, where the first signal quality corresponds to a first rank and the second signal quality corresponds to a second rank. Wherein the first rank and the second rank are different.

In the present application, the first signal quality and the second signal quality may be, for example, reference Signal Received Power (RSRP), reference Signal Received Quality (RSRQ), signal to interference noise ratio (SINR), or the like, and are not limited herein.

Optionally, the order of the strength of the first signal quality and the strength of the second signal quality may be indicated by the first index and the second index. Specifically, the first index is greater than the second index, which indicates that the first signal quality is greater than the second signal quality; the first index is equal to the second index, indicating that the first signal quality is equal to the second signal quality; the first index is less than the second index, indicating that the first signal quality is less than the second signal quality; or, the first index is greater than the second index, indicating that the first signal quality is less than the second signal quality; the first index is equal to the second index, indicating that the first signal quality is equal to the second signal quality; the first index is greater than the second index, indicating that the first signal quality is less than the second signal quality. It is to be understood that in the present application, the order of strength of the indexes indicating different ranks, particularly how to represent different signal qualities, may be predefined by the protocol.

Illustratively, referring to table 11 in conjunction with table 11, it can be seen that the indices in table 11 are 0, 1, 2 and 3, respectively, i.e., in table 11 in ascending order from top to bottom. Wherein the first index may be 0, the second index may be 1, and indexes other than the first index and the second index may be 2 and 3, respectively. In table 11, 0 corresponds to antenna port group 1, antenna port group 2, and antenna port group 3 (the size of the precoding vector corresponding to the rank indicated by 0 is the sum of the numbers of all antenna ports in antenna port group 1, antenna port group 2, and antenna port group 3, that is, 12); 1 corresponds to the antenna port group 2 and the antenna port group 3 (the size of the precoding vector corresponding to the rank indicated by 1 is the sum of the number of all antenna ports in the antenna port group 2 and the antenna port group 3, namely 8); 2 corresponds to the antenna port group 3 (the size of the precoding vector corresponding to the rank indicated by 2 is the sum of the number of all antenna ports in the antenna port group 3, that is, 4); 3 corresponds to the antenna port group 3 (the precoding vector corresponding to the rank indicated by 3 is the sum of the number of all antenna ports in the antenna port group 3, i.e. 4). It is to be understood that the signal quality for the rank indicated by 0 is greater than the signal quality for the rank indicated by 1, the signal quality for the rank indicated by 1 is greater than the signal quality for the rank indicated by 2, and the signal quality for the rank indicated by 2 is greater than the signal quality for the rank indicated by 3.

Table 11: sequence of strengths and weaknesses of different signal qualities

Index	Antenna port set 1	Antenna port group 2	Antenna port group 3
				0	Y	Y	Y
1		Y	Y
				2			Y
3			Y

It can be seen that, in the above technical solution, the first information further indicates the strength sequence of the first signal quality and the second signal quality, so that the network device can learn the strength sequences of different signal qualities without adding extra overhead.

The above-mentioned scheme provided by the present application is mainly introduced from the perspective of interaction between network elements. It is to be understood that the above-described implementation of each network element includes, in order to implement the above-described functions, a corresponding hardware structure and/or software module for performing each function. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the terminal device and the network device may be divided into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module, and the integrated module may be implemented in a form of hardware or a form of software functional module. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In the case of using an integrated unit, referring to fig. 6, fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device 600 can be applied to the method shown in fig. 4, and as shown in fig. 6, the communication device 600 includes: a transceiver module 601. The transceiver module 601 may be a transceiver or a communication interface. The communication device may be configured to implement the functions related to the terminal device and the network device in any of the above method embodiments, or to implement the functions related to the network element in any of the above method embodiments. The network element or network function may be a network element in a hardware device, a software function running on dedicated hardware, or a virtualization function instantiated on a platform (e.g., a cloud platform). Optionally, the communication device 600 may further include a storage module 602 for storing program codes and data of the communication device 600.

An example is when the communication device is used as a terminal device or as a chip applied in a terminal device, and performs the steps performed by the terminal device in the above method embodiments. The transceiver module 601 is used to support communication with a terminal device or a network device, etc., and specifically performs the actions of transmitting and/or receiving performed by the terminal device in fig. 4, such as supporting the terminal device to perform step 402, and/or other processes for the techniques described herein.

An example is when the communication device is used as a network device or a chip applied to a network device, and performs the steps performed by the network device in the above method embodiments. The transceiver module 601 is used to support communication with a terminal device or a network device, etc., and specifically performs the actions of transmitting and/or receiving performed by the network device in fig. 4, such as supporting the network device to perform step 401, and/or other processes for the techniques described herein.

In one possible implementation, when the terminal device or the network device is a chip, the transceiver module 601 may be an interface, a pin, a circuit, or the like. The interface can be used for inputting data to be processed to the processor and outputting processing results of the processor outwards. In specific implementation, the interface may be a general purpose input/output (GPIO) interface, and may be connected to a plurality of peripheral devices (e.g., a display (LCD), a camera (camara), a Radio Frequency (RF) module, an antenna, and the like). The interface is connected with the processor through a bus.

Further, the processor may include a controller, an operator, and a register. Illustratively, the controller is mainly responsible for instruction decoding and sending out control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operation, shift operation, logic operation and the like, and can also perform address operation and conversion. The register is mainly responsible for storing register operands, intermediate operation results and the like temporarily stored in the instruction execution process. In a specific implementation, the hardware architecture of the processor may be an Application Specific Integrated Circuit (ASIC) architecture, a microprocessor without interlocked pipeline stage architecture (MIPS) architecture, an advanced reduced instruction set machine (ARM) architecture, or a Network Processor (NP) architecture. The processors may be single core or multicore.

The memory module may be a memory module in the chip, such as a register, a cache, and the like. The Memory module may also be a Memory module located outside the chip, such as a Read Only Memory (ROM) or other types of static Memory devices that can store static information and instructions, a Random Access Memory (RAM), and the like.

It should be noted that the functions corresponding to the processor and the interface may be implemented by hardware design, software design, or a combination of hardware and software, which is not limited herein.

Fig. 7 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present application. For easy understanding and illustration, in fig. 7, the terminal device is exemplified by a mobile phone. As shown in fig. 7, the terminal device includes at least one processor, and may further include a radio frequency circuit, an antenna, and an input-output device. The processor can be used for processing the communication protocol and the communication data, and can also be used for controlling the terminal equipment, executing the software program, processing the data of the software program and the like. The terminal device may further comprise a memory, which is mainly used for storing software programs and data, and these related programs may be loaded into the memory at the time of shipment of the communication apparatus, or may be loaded into the memory at a later time when needed. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves, and is provided by the embodiment of the application. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 7. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, an antenna and a radio frequency circuit having a transceiving function may be regarded as a receiving unit and a transmitting unit (which may also be collectively referred to as a transceiving unit) of a terminal device, and a processor having a processing function may be regarded as a processing unit of the terminal device. As shown in fig. 7, the terminal device includes a receiving module 31, a processing module 32, and a transmitting module 33. The receiving module 31 may also be referred to as a receiver, a receiving circuit, etc., and the transmitting module 33 may also be referred to as a sender, a transmitter, a transmitting circuit, etc. The processing module 32 may also be referred to as a processor, processing board, processing device, or the like.

For example, the receiving module 31 is configured to execute the functions of the terminal device in any embodiment shown in fig. 4.

Fig. 8 is a schematic structural diagram of a simplified network device according to an embodiment of the present application. The network device includes a radio frequency signal transceiving and converting portion 42, which includes a receiving module 41 and a transmitting module 43 (which may also be collectively referred to as a transceiving module). The radio frequency signal receiving, transmitting and converting part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 42 part is mainly used for baseband processing, network equipment control and the like. The receiving module 41 may also be referred to as a receiver, a receiving circuit, etc., and the transmitting module 43 may also be referred to as a transmitter, a transmitting circuit, etc. Portion 42 is generally a control center of the network device and may be generally referred to as a processing module for controlling the network device to perform the steps described above with respect to the network device in fig. 4. Reference is made in particular to the description of the relevant part above.

Section 42 may include one or more boards, each of which may include one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of the network devices. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

For example, for a network device, the sending module 43 is configured to perform the functions of the network device in any embodiment shown in fig. 4.

The embodiment of the present application further provides a communication apparatus, which includes a processor, a memory, an input interface, and an output interface, where the input interface is configured to receive information from other communication apparatuses except the first device, the output interface is configured to output information to other communication apparatuses except the first device, and the processor invokes a computer program stored in the memory to implement any of the embodiments shown in fig. 4.

An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed, any of the embodiments shown in fig. 4 is implemented.

The embodiment of the present application further provides a computer program product, which when read and executed by a computer, causes the computer to execute any embodiment shown in fig. 4.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

Claims

1. A method for reporting channel information is characterized by comprising the following steps:

receiving a first reference signal from a network device;

2. The method of claim 1, wherein the first information further indicates a second correspondence relationship, the second correspondence relationship comprising a correspondence relationship between a second rank and a second set of antenna ports corresponding to the first reference signal, the second correspondence relationship measured by the first reference signal.

3. The method according to claim 1 or 2, wherein the antenna ports of the first set of antenna ports are partly identical to the antenna ports of the second set of antenna ports.

4. The method according to any of claims 1-3, wherein the antenna ports of the first antenna port set are included in a first logical antenna port group, the first logical antenna port group comprises at least one antenna port group, and the first information further indicates a correspondence between rank numbers corresponding to the first logical antenna port group and the first logical antenna port group.

5. The method according to any of claims 1-3, wherein the antenna ports of the second set of antenna ports are included in a second logical antenna port group, the second logical antenna port group comprises at least one antenna port group, and the first information further indicates a correspondence between ranks of the second logical antenna port group corresponding to the second logical antenna port group.

6. The method according to claim 4 or 5, wherein antenna port groups in the first logical antenna port group and antenna port groups in the second logical antenna port group are partly identical.

7. The method according to any of claims 1-6, wherein the first information further indicates a strength order of a first signal quality and a second signal quality, the first signal quality corresponding to the first rank and the second signal quality corresponding to the second rank.

8. A method for reporting channel information is characterized by comprising the following steps:

sending a first reference signal to the terminal equipment;

9. The method of claim 8, wherein the first information further indicates a second correspondence, the second correspondence comprising a correspondence between a second rank and a second set of antenna ports corresponding to the first reference signal, the second correspondence measured from the first reference signal.

10. The method according to claim 8 or 9, wherein the antenna ports of the first set of antenna ports are partly identical to the antenna ports of the second set of antenna ports.

11. The method according to any of claims 8-10, wherein the antenna ports of the first antenna port set are included in a first logical antenna port group, the first logical antenna port group comprises at least one antenna port group, and the first information further indicates a correspondence between rank numbers corresponding to the first logical antenna port group and the first logical antenna port group.

12. The method according to any of claims 8-10, wherein the antenna ports of the second set of antenna ports are included in a second logical antenna port group, the second logical antenna port group comprising at least one antenna port group, and the first information further indicates a correspondence between rank numbers corresponding to the second logical antenna port group and the second logical antenna port group.

13. The method of claim 11 or 12, wherein antenna port groups in the first logical antenna port group and antenna port groups in the second logical antenna port group are partially identical.

14. The method according to any of claims 8-13, wherein the first information further indicates a strength order of a first signal quality and a second signal quality, wherein the first signal quality corresponds to the first rank and the second signal quality corresponds to the second rank.

15. A terminal device, characterized in that the terminal device comprises a transceiver module for transmitting and receiving

Receiving a first reference signal from a network device;

16. A network device, characterized in that the network device comprises a transceiver module for

Sending a first reference signal to the terminal equipment;

17. A communications device comprising a processor and a memory, the processor invoking a computer program stored in the memory to implement the method of any one of claims 1-14.

18. A computer-readable storage medium, in which a computer program is stored which, when being executed, carries out the method according to any one of claims 1-14.