CN112312463A

CN112312463A - Method and device for reporting channel state information

Info

Publication number: CN112312463A
Application number: CN201910701975.XA
Authority: CN
Inventors: 刘建琴; 李雪茹; 刘鹍鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2021-02-02
Also published as: WO2021017773A1

Abstract

The application provides a method and a device for reporting channel state information, which are beneficial to improving the transmission efficiency of a Physical Downlink Shared Channel (PDSCH) sent to a terminal device by a network device before the terminal device establishes connection with the network device. The method comprises the following steps: the method comprises the steps that network equipment sends first configuration information and second configuration information to terminal equipment through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring reporting of Channel State Information (CSI); and the terminal equipment receives the first configuration information and the second configuration information, receives a reference signal sent by the network equipment according to the first configuration information, obtains CSI according to the reference signal and reports the CSI to the network equipment.

Description

Method and device for reporting channel state information

Technical Field

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

Background

In order to improve system performance, the existing communication system usually employs Multiple Input Multiple Output (MIMO) technology to transmit data. At this time, the transmitting end needs to know accurate Channel State Information (CSI). The accurate CSI can enable the sending end to perform proper data processing on the data to be sent, such as precoding, determining a modulation and coding scheme and the like, so that the data transmission efficiency is improved, and the system performance is improved. Generally, the terminal device may measure a reference signal sent by the network device to obtain CSI, and feed back the CSI to the network device for link adaptation for subsequent data transmission by the network device.

However, the configuration information of the CSI is configured by Radio Resource Control (RRC) signaling, and the terminal device enters an RRC connected state after completing the initial random access procedure and can be configured by the RRC signaling, and the configuration needs a certain time to be effective. Therefore, the CSI reporting of the terminal device configured by dedicated RRC signaling is only applicable to the terminal device in the RRC connected state.

There is a need to provide a method for improving the transmission efficiency of a Physical Downlink Shared Channel (PDSCH) between a terminal device and a network device for the terminal device that has no connection with the network device (e.g., the terminal device before RRC connection state or the terminal device before initial access is completed).

Disclosure of Invention

The application provides a method and a device for measuring channel state information, which are beneficial to improving the transmission efficiency of a PDSCH (physical downlink shared channel) sent by a network device to the terminal device before the terminal device is connected with the network device, thereby improving the system performance.

In a first aspect, a method for reporting channel state information is provided, including: the method comprises the steps that terminal equipment receives first configuration information and second configuration information from network equipment through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring reporting of Channel State Information (CSI); the terminal equipment receives a reference signal from the network equipment according to the first configuration information, and acquires CSI according to the reference signal; and the terminal equipment reports the CSI to the network equipment according to the second configuration information.

In this embodiment of the application, the first message is a multicast message or a broadcast message, that is, the first configuration information and the second configuration information are sent through the multicast message or the broadcast message, and a dedicated RRC signaling is not needed, so that for a terminal device that does not establish a connection with a network device (for example, a terminal device before initial access is completed or a terminal device before an RRC connection state), reporting of a reference signal and CSI may be configured through the multicast message or the broadcast message, so that the terminal device reports CSI according to configuration information of the multicast message or the broadcast message before initial access is completed, and a PDSCH sent to the terminal device by the network device may perform link adaptation for data transmission by using the CSI, which is beneficial to improve transmission efficiency of a PDSCH before initial access is completed, and further improve system performance.

In addition, for terminal equipment which moves at a high speed and needs to perform RRC reestablishment and initial access frequently, the method of the embodiment of the application is beneficial to improving the transmission efficiency of the PDSCH carrying RRC signaling, and further beneficial to the terminal equipment and network equipment to perform actual data service transmission rapidly.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: and the terminal equipment receives a random access response from the network equipment, wherein the random access response carries first indication information, and the first indication information is used for triggering the sending of the reference signal and/or the reporting of the CSI.

Since the reporting of the CSI is divided into periodic reporting and aperiodic reporting, in order to reduce the resource overhead of the network device for sending the reference signal and reduce the reporting overhead of the terminal device for the CSI as much as possible, the network device sends the reference signal and/or the terminal device reports the CSI, which may be triggered in an aperiodic manner, that is, according to requirements.

With reference to the first aspect, in certain implementations of the first aspect, the random access response is a random access response in a contention-based random access procedure.

It should be appreciated that for non-contention based random access, the CSI request (CSI request) field in the random access response is used to decide whether aperiodic CSI reports are included in the corresponding PUSCH transmission. For contention-based random access, the CSI request field in the random access response is reserved, i.e., has no effect. Therefore, for a random access response in a contention-based random access procedure, the first indication information may be a CSI request field in the random access response.

It should also be understood that the first indication information may also be other fields or newly added fields in the random access response, which is not limited in this embodiment of the present application.

Optionally, the number of bits of the first indication information is an integer greater than or equal to 1. In order to save signaling overhead, the bit number of the first indication information is an integer greater than or equal to 1 and less than or equal to 2.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the terminal device receives first indication information from the network device, where the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, and the first indication information is carried in any one of the following information: downlink control information used for scheduling a Physical Uplink Shared Channel (PUSCH); or, the random access responds to the corresponding downlink control information; or, downlink control information corresponding to the system message; or, the downlink control information corresponding to the paging message.

In this embodiment of the present application, in Downlink Control Information (DCI) carried by the first indication information for triggering transmission of the reference signal and/or reporting of the CSI, the DCI may be downlink control information (e.g., DCI format 0_0) used for scheduling a PUSCH, or DCI corresponding to a random access response, or DCI corresponding to a system message, or DCI corresponding to a paging message, which is not limited in this embodiment of the present application.

With reference to the first aspect, in some implementations of the first aspect, the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.

In order to further save signaling overhead, a relationship between the time domain resource of the reference signal and the time domain resource of the downlink control information for triggering the reference signal may be predefined, so that the network device and the terminal device determine the time domain resource of the reference signal according to the time domain resource of the downlink control information. The time domain resource may be a subframe, a slot, or a symbol (e.g., an Orthogonal Frequency Division Multiplexing (OFDM) symbol), which is not limited in this embodiment of the present application.

With reference to the first aspect, in certain implementations of the first aspect, the first configuration information includes a type of the reference signal, and the type of the reference signal includes a non-zero power reference signal and a zero power reference signal, where the non-zero power reference signal is used for measuring a channel and the zero power reference signal is used for measuring interference.

With reference to the first aspect, in some implementations of the first aspect, the second configuration information includes reporting content of the CSI, where the reporting content of the CSI includes at least one of: channel quality indication CQI, rank indication RI, precoding matrix indication PMI, reference signal resource index.

With reference to the first aspect, in certain implementations of the first aspect, the first message is a system message or a paging message.

For example, the first message may be any one of a system message, a random access response message, or a paging message, which is not limited in this embodiment of the present application. In one possible implementation, the first message is minimum remaining system information (RMSI), also referred to as system information block 1 (SIB 1), or Other System Information (OSI).

In a second aspect, another method for measuring channel state information is provided, including: the method comprises the steps that network equipment sends first configuration information and second configuration information through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring reporting of Channel State Information (CSI); the network equipment sends the reference signal according to the first configuration information; and the network equipment receives CSI reported by the terminal equipment according to the second configuration information.

With reference to the second aspect, in some implementations of the second aspect, before the network device transmits the reference signal according to the first configuration information, the method further includes: and the network equipment sends a random access response to the terminal equipment, wherein the random access response carries first indication information, and the first indication information is used for triggering the sending of the reference signal and/or the reporting of the CSI.

With reference to the second aspect, in certain implementations of the second aspect, the random access response is a random access response in a contention-based random access procedure.

With reference to the second aspect, in some implementations of the second aspect, before the network device transmits the reference signal according to the first configuration information, the method further includes: the network device sends first indication information, where the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, and the first indication information is carried in any one of the following information: downlink control information used for scheduling a Physical Uplink Shared Channel (PUSCH); or, the random access responds to the corresponding downlink control information; or, downlink control information corresponding to the system message; or, the downlink control information corresponding to the paging message.

With reference to the second aspect, in some implementations of the second aspect, the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.

With reference to the second aspect, in some implementations of the second aspect, the first configuration information includes a type of the reference signal, and the type of the reference signal includes a non-zero power reference signal and a zero power reference signal, where the non-zero power reference signal is used for measuring a channel and the zero power reference signal is used for measuring interference.

With reference to the second aspect, in some implementations of the second aspect, the second configuration information includes reporting content of the CSI, where the reporting content of the CSI includes at least one of: channel quality indication CQI, rank indication RI, precoding matrix indication PMI, reference signal resource index.

With reference to the second aspect, in some implementations of the second aspect, the first message is a system message or a paging message.

In a third aspect, a communication method is provided, including: the method comprises the steps that terminal equipment sends a random access request to network equipment, wherein the random access request is used for requesting to access a cell where the network equipment is located; the terminal device receives a random access response from the network device, wherein the random access response is a random access response in a contention-based random access process, the random access response carries first indication information, and the first indication information is used for triggering the sending of a reference signal and/or the reporting of Channel State Information (CSI).

With reference to the third aspect, in certain implementations of the third aspect, the method further includes: the terminal device receives first configuration information and second configuration information from the network device through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring the reference signal, and the second configuration information is used for configuring the report of the CSI; the terminal equipment receives the reference signal from the network equipment according to the first configuration information, and obtains the CSI according to the reference signal; after the terminal device receives the random access response from the network device, the method further comprises: and the terminal equipment reports the CSI to the network equipment according to the second configuration information and the first indication information.

With reference to the third aspect, in certain implementations of the third aspect, the first configuration information includes a type of the reference signal, and the type of the reference signal includes a non-zero power reference signal and a zero power reference signal, where the non-zero power reference signal is used for measuring a channel and the zero power reference signal is used for measuring interference.

With reference to the third aspect, in some implementations of the third aspect, the second configuration information includes reporting content of the CSI, where the reporting content of the CSI includes at least one of: channel quality indication CQI, rank indication RI, precoding matrix indication PMI, reference signal resource index.

With reference to the third aspect, in some implementations of the third aspect, the first message is a system message or a paging message.

In a fourth aspect, another communication method is provided, including: the method comprises the steps that network equipment receives a random access request from terminal equipment, wherein the random access request is used for requesting to access a cell where the network equipment is located; the network equipment sends a random access response to the terminal equipment, wherein the random access response is a random access response in a contention-based random access process, the random access response carries first indication information, and the first indication information is used for triggering the sending of a reference signal and/or the reporting of Channel State Information (CSI).

With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the network device sends first configuration information and second configuration information to the terminal device through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring the reference signal, and the second configuration information is used for configuring the report of the CSI; after the network device sends a random access response to the terminal device, the method further includes: the network equipment sends the reference signal to the terminal equipment according to the first configuration information and the first indication information; and the network equipment receives the CSI reported by the terminal equipment according to the reference signal and the second configuration information according to the second configuration information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first configuration information includes a type of the reference signal, and the type of the reference signal includes a non-zero power reference signal and a zero power reference signal, where the non-zero power reference signal is used for measuring a channel and the zero power reference signal is used for measuring interference.

With reference to the fourth aspect, in some implementations of the fourth aspect, the second configuration information includes reporting content of the CSI, where the reporting content of the CSI includes at least one of: channel quality indication CQI, rank indication RI, precoding matrix indication PMI, reference signal resource index.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first message is a system message or a paging message.

In a fifth aspect, an apparatus is provided for performing the method of the above aspects or any possible implementation manner of the aspects. In particular, the apparatus comprises means for performing the method in the above aspects or any possible implementation of the aspects.

In one design, the apparatus may include a module corresponding to one or more of the methods/operations/steps/actions described in the foregoing aspects, and the module may be a hardware circuit, a software circuit, or a combination of a hardware circuit and a software circuit.

In another design, the device is a communication chip that may include an input circuit or interface for sending information or data and an output circuit or interface for receiving information or data.

In another design, the apparatus is a communication device that may include a transmitter to transmit information or data and a receiver to receive information or data.

In another design, the apparatus is configured to perform the method in each aspect or any possible implementation manner of each aspect, and the apparatus may be configured in the terminal device or the network device, or the apparatus itself is the terminal device or the network device.

In a sixth aspect, another apparatus is provided, which includes a processor, a memory, the memory storing a computer program, the processor being configured to retrieve and execute the computer program from the memory, so that the apparatus performs the method of any one of the above-mentioned aspects.

Optionally, the number of the processors is one or more, and the number of the memories is one or more.

Alternatively, the memory may be integral to the processor or provided separately from the processor.

Optionally, the communication device further comprises a transmitter (transmitter) and a receiver (receiver), which may be separately arranged or integrated together, and are called transceivers (transceivers).

In a seventh aspect, there is provided a communication system comprising means for implementing the first aspect or any one of the possible implementations of the first aspect, and means for implementing the second aspect or any one of the possible implementations of the second aspect; alternatively, the first and second electrodes may be,

means for implementing the method of any one of the above third or fourth possible implementations, and means for implementing the method of any one of the above fourth or fourth possible implementations.

In a possible design, the communication system may further include other devices that interact with the terminal device and/or the network device in the solution provided in this embodiment.

In an eighth aspect, there is provided a computer program product comprising: computer program (also called code, or instructions), which when executed, causes a computer to perform the method of any of the possible implementations of any of the above aspects.

In a ninth aspect, a computer-readable medium is provided, which stores a computer program (which may also be referred to as code, or instructions) that, when executed on a computer, causes the computer to perform the method of any of the possible implementations of any of the above aspects.

In a tenth aspect, a chip system is provided, which includes a memory for storing a computer program and a processor for calling and executing the computer program from the memory, so that a communication device in which the chip system is installed executes the method in any one of the possible implementation manners of the above aspects.

The system-on-chip may include, among other things, input circuitry or interfaces for transmitting information or data, and output circuitry or interfaces for receiving information or data.

Drawings

Fig. 1 is a schematic structural diagram of a communication system provided in an embodiment of the present application.

Fig. 2 is a schematic flowchart of a method for reporting channel state information according to an embodiment of the present disclosure.

Fig. 3 is a schematic flow chart of another method for reporting channel state information according to an embodiment of the present application.

Fig. 4 is a schematic flowchart of a communication method provided in an embodiment of the present application.

Fig. 5 is a schematic block diagram of an apparatus provided by an embodiment of the present application.

Fig. 6 is a schematic block diagram of another apparatus provided by an embodiment of the present application.

Fig. 7 is a schematic block diagram of another apparatus provided by an embodiment of the present application.

Detailed Description

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

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a Universal Mobile Telecommunications System (UMTS), a fifth generation (5G) system, a New Radio (NR) system, or other evolved communication systems.

The terminal device in the embodiment of the present application may also be referred to as: user Equipment (UE), Mobile Station (MS), Mobile Terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device, etc.

The terminal device may be a device providing voice/data connectivity to a user, e.g. a handheld device, a vehicle mounted device, etc. with wireless connection capability. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote operation (remote local supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in city (city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (wireless local) phone, a personal digital assistant (WLL) station, a handheld personal communication device with wireless communication function, a wireless terminal in industrial control (industrial control), a wireless terminal in transportation security (personal control), a wireless terminal in city (smart home), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (personal digital assistant (PDA) phone, a wireless local communication device with wireless communication function, a wireless communication device, a communication device, A computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, which are not limited in this embodiment of the present application.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

In addition, in the embodiment of the present application, the terminal device may also be a terminal device in an internet of things (IoT) system, where IoT is an important component of future information technology development, and a main technical feature of the present application is to connect an article with a network through a communication technology, so as to implement an intelligent network with interconnected human-computer and interconnected objects.

In addition, the network device in this embodiment may be a device for communicating with a terminal device, which may also be referred to as an access network device or a radio access network device, and may be a Transmission Reception Point (TRP), an evolved NodeB (eNB) or an eNodeB in an LTE system, a home evolved NodeB (or home Node B, HNB), a baseband unit (BBU), a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network, or a network device in a PLMN network that is evolved in the future, or the like, may be an Access Point (AP) in a WLAN, may be a new radio system (new radio system, NR) system, the embodiments of the present application are not limited.

In one network configuration, a network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node), and a RAN device of a DU node.

The network device provides a service for a cell, and a terminal device communicates with the cell through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) allocated by the network device, where the cell may belong to a macro base station (e.g., a macro eNB or a macro gNB), or may belong to a base station corresponding to a small cell (small cell), where the small cell may include: urban cell (metro cell), micro cell (microcell), pico cell (pico cell), femto cell (femto cell), etc., and these small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission service.

In the embodiment of the application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution main body of the method provided by the embodiment of the present application, as long as the communication can be performed according to the method provided by the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, for example, the execution main body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module capable of calling the program and executing the program in the terminal device or the network device.

In addition, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

For the understanding of the embodiments of the present application, a detailed description will be given of a communication system suitable for the embodiments of the present application with reference to fig. 1.

Fig. 1 shows a communication system 100 to which an embodiment of the present application is applied. The communication system 100 may include at least one network device 110. Network devices 110 may be devices that communicate with terminal devices, and each network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within that coverage area (cell). The communication system 100 also includes a plurality of terminal devices 120 located within the coverage area of the network device 110. The terminal device 120 may be mobile or stationary.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited thereto in the embodiments of the present application.

For ease of understanding, the terms referred to in this application will be briefly described below.

1. Random access

The random access procedure refers to a procedure from the time when the network device transmits a random access preamble, before attempting to access the network to establish a basic signaling connection with the network. It should be understood that the random access is initiated in an idle mode or a connected mode, and mainly aims to acquire uplink synchronization with the network device and apply for uplink resources. The random access is mainly applied to an initial access period before the establishment of the radio resource control connection and an RRC connection re-establishment period.

The random access is classified into contention-based random access and non-contention-based random access. For the random access process based on non-competition, the terminal device may initiate random access by using a random access code allocated by the network device, and the random access of this type includes two steps of the terminal device sending a random access request and the network device sending a random access response. For the contention-based random access process, the terminal device may randomly select a random access preamble to initiate random access, and the random access preamble may be selected by a plurality of different terminal devices in a resource pool, which may cause a problem of resource contention. In this case, the network device needs to transmit a contention resolution message to the terminal device. Therefore, the contention-based random access procedure includes the following four steps:

step one, a random access preamble is randomly selected by a terminal device, and a random access request is sent on a physical random access channel (PHYSICAL RANDOM ACCESS CHANNEL);

step two, the network device detects a random access request carrying a random access preamble, and further sends a random access response, where the random access response may include a number of the random access preamble received by the network device, a time adjustment amount of the random access preamble received by the network device, and information for indicating an uplink resource location allocated to the terminal device by the network device;

step three, the terminal device receives a random access response sent by the network device, and sends an uplink message (i.e., a Physical Uplink Shared Channel (PUSCH)) on an uplink resource indicated by the random access response, where the uplink message may include a unique identifier of the terminal device (e.g., a Temporary Mobile Subscriber Identity (TMSI)) or a corresponding random access identifier;

step four, the network device receives the uplink message sent by the terminal device, and sends a contention resolution message to the terminal device with successful access, wherein the contention resolution message may include the unique ID (for example, TMSI) of the terminal device with successful access or a corresponding random access identifier.

It should be understood that there may be one or more terminal devices, and when multiple terminal devices simultaneously select the same random access preamble for random access, contention may be caused, and then the network device needs to perform contention resolution through step four.

2、CSI

The CSI generally includes a precoding vector indicator (PMI), a Channel Quality Indicator (CQI), and a Rank Indicator (RI). The network device may select a precoding matrix for precoding data according to the PMI; the CQI indicates channel quality for the network device to reference for determining the modulation coding scheme; the RI indicates the number of data layers that the network device can simultaneously transmit to the terminal, and the larger the RI is, the more the number of data layers transmitted simultaneously is indicated. The selection of the PMI is often related to a channel matrix between the network equipment and the terminal, the higher the matching degree of a precoding matrix represented by the PMI and the channel matrix is, the network equipment selects the precoding matrix according to the PMI to precode data, and the multi-user interference can be better inhibited.

Generally, the terminal device may measure a reference signal sent by the network device to obtain CSI, and feed back the CSI to the network device for link adaptation for subsequent data transmission by the network device. The reference signal may include, for example, a channel state information reference signal (CSI-RS). Correspondingly, the reference signal resource may comprise, for example, a CSI-RS resource (CSI-RS resource). To distinguish between different reference signal resources, each reference signal resource may correspond to an index of one reference signal resource, e.g., CSI-RS resources may be distinguished by a CSI-RS index (e.g., CSI-RS index).

It should be understood that the above listed reference signals and corresponding reference signal resources are only exemplary and should not constitute any limitation to the present application, which does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functions.

The configuration information of the CSI is configured by Radio Resource Control (RRC) signaling, and the terminal device enters an RRC connected state after completing the initial random access procedure and can be configured by the RRC signaling, and the configuration needs a certain time to be effective. Therefore, the CSI reporting of the terminal device configured by dedicated RRC signaling is only applicable to the terminal device in the RRC connected state.

In view of the above, the present application provides a method, which is beneficial for improving the transmission efficiency of a Physical Downlink Shared Channel (PDSCH) between a terminal device and a network device, for the terminal device that does not establish a connection with the network device (e.g., the terminal device before an RRC connection state or the terminal device before initial access is completed).

To facilitate understanding of the embodiments of the present application, the following description is made.

1. In the embodiment of the present application, "for indicating" may include for direct indication and for indirect indication, and may also include explicit indication and implicit indication. If the information indicated by a certain piece of information is referred to as information to be indicated, in a specific implementation process, there are many ways of indicating the information to be indicated, for example, but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or an index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein an association relationship exists between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other part of the information to be indicated is known or predetermined. For example, indication of information to be indicated can also be implemented by means of pre-agreed (e.g., protocol specification) whether a certain cell exists, thereby reducing the indication overhead to some extent.

2. The first, second, third and various numerical references in the embodiments shown below are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application. E.g. to distinguish different information, to distinguish different threshold values, etc.

3. In the embodiments shown below, "predefined" may be a protocol definition. The "predefined" may be implemented by saving a corresponding code, table, or other means that can be used to indicate the relevant information in advance in the device (for example, including the terminal device and the network device), and the present application is not limited to a specific implementation manner thereof.

4. The "protocol" referred to in the embodiment of the present application may refer to a standard protocol in the communication field, and may include, for example, a Long Term Evolution (LTE) protocol, a New Radio (NR) protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

Various embodiments provided herein will be described in detail below.

In the embodiment of the present application, a terminal device and a network device are taken as examples for description, it should be understood that the terminal device may be replaced by a device or a chip capable of implementing a function similar to that of the terminal device, and the network device may also be replaced by a device or a chip capable of implementing a function similar to that of the network device, and the name of the device or the chip is not limited in the embodiment of the present application.

Fig. 2 shows a schematic flow chart of a method 200 for reporting channel state information according to an embodiment of the present application. The method 200 may be applied to the communication system 100 shown in fig. 1, but the embodiment of the present application is not limited thereto.

S210, a network device sends first configuration information and second configuration information through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring the report of CSI; correspondingly, the terminal device may receive the first configuration information and the second configuration information through the first message.

S220, the network equipment sends a reference signal according to the first configuration information.

And S230, the terminal equipment receives the reference signal from the network equipment according to the first configuration information, and acquires the CSI according to the reference signal.

S240, the terminal device reports the CSI to the network device according to the second configuration information; correspondingly, the network device receives the CSI.

The "reporting CSI" is that the terminal device sends CSI to the network device. Since the first message is a multicast message or a broadcast message, the terminal device in this embodiment refers to any terminal device that can receive the multicast message or the broadcast message of the network device within the coverage of the network device. In other words, all terminal devices within the coverage of the network device may report CSI based on the same first configuration information and the same second configuration information.

It should be understood that the first message may be one message or two messages, and this is not limited in this embodiment of the application. In other words, the first configuration information and the second configuration information may be carried in the same message or may be carried in two different messages. When the first configuration information and the second configuration information are carried in the same message, the first configuration information and the second configuration information may be located in two different fields in the same message.

The "first configuration information is used for configuring the reference signal" includes: the first configuration information may configure reference signal resources (e.g., time domain resources, frequency domain resources, spatial domain resources, etc.) used for transmitting the reference signals and/or types of the transmitted reference signals. As an alternative embodiment, the first configuration information includes a type of the reference signal. The types of the reference signals include a non-zero power reference signal and a zero power reference signal, wherein the non-zero power reference signal is used for measuring a channel, and the zero power reference signal is used for measuring interference. The interference here refers to inter-cell interference.

The "reporting of the second configuration information for configuring CSI" means: the second configuration information is used for configuring resources (e.g., time domain resources, frequency domain resources, space domain resources, etc.) reported by the CSI and/or content of the CSI. As an optional embodiment, the second configuration information includes reporting content of CSI, where the reporting content of CSI may include at least one of the following: channel quality indication CQI, rank indication RI, precoding matrix indication PMI, reference signal resource index.

Exemplarily, the reporting content of the CSI may be that only CQI is reported, and this reporting manner may minimize CSI reporting overhead of the terminal device; or, the reporting content of the CSI may be RI and CQI, and this reporting manner may effectively support the adaptation of the channel transport stream; or, the reporting content of the CSI may be RI, PMI and CQI, and this reporting manner may maximize performance of signal transmission; or, the reporting content of the CSI may be reporting reference signal resource index and CQI, and the reporting mode may effectively support selection of an optimal beam in a multi-beam transmission scenario; or, the reporting content of the CSI may be reporting reference signal resource index and RI, and the reporting mode may support multi-stream and multi-beam flexible adaptation. It should be understood that, besides the above listed situations, the report of CST may also be a combination of other information, and this is not limited in this embodiment of the application.

It should also be understood that the above "the terminal device obtains CSI according to the reference signal" means: the terminal device may perform channel measurement on the reference signal configured by the first configuration information to obtain the CSI, or the terminal device may perform channel measurement on the reference signal configured by the first configuration information and another reference signal to obtain the CSI, which is not limited in this embodiment of the present application.

In the embodiment of the present application, the first configuration message and the second configuration message are both sent by a multicast message or a broadcast message. However, it should be understood that in other possible implementations of the present application, the first configuration message is sent by a multicast message or a broadcast message, and the second configuration message may be predefined, or the first configuration message may be predefined and the second configuration message is sent by a multicast message or a broadcast message, or a part of the content in the first configuration message and/or the second configuration message may be predefined. In this way, the signaling overhead of the network device for sending the first configuration message and/or the second configuration message can be reduced.

As an optional embodiment, the method further comprises: the terminal equipment receives a random access response from the network equipment, wherein the random access response carries first indication information, and the first indication information is used for triggering the sending of a reference signal and/or the reporting of CSI.

The random access response is used to indicate the terminal device to transmit resource information of a Physical Uplink Shared Channel (PUSCH), where the first indication information is carried in the random access response sent by the network device, that is, the network device may trigger sending of a reference signal and/or reporting of CSI in a process of initial random access performed by the terminal device. Since the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, the embodiments of the present application may be divided into the following three cases:

case 1, the first indication information triggers the transmission of the reference signal only

In this case, the mode of sending the reference signal by the network device is aperiodic, and the mode of reporting the CSI by the terminal device may be periodic, or may be reporting the CSI immediately after the CSI is obtained by measuring the reference signal, which is not limited in the embodiment of the present application. The embodiment can decouple the triggering of the reference signal and the triggering of the CSI reporting, and is beneficial to increasing the flexibility of signal transmission.

In case 2, the first indication information only triggers the reporting of the CSI

In this case, the mode of sending the reference signal by the network device may be periodic, and the mode of reporting the CSI by the terminal device may be aperiodic, for example, the terminal device performs channel measurement according to the reference signal periodically sent by the network device, and does not report the CSI immediately after obtaining the CSI, but reports the CSI according to the first indication information. The embodiment can decouple the triggering of the reference signal and the triggering of the CSI reporting, and is beneficial to increasing the flexibility of signal transmission.

In case 3, the first indication information triggers sending of the reference signal and reporting of the CSI

In this case, the mode of sending the reference signal by the network device is aperiodic, and the mode of reporting the CSI by the terminal device is also aperiodic. That is, the network device needs to send the reference signal according to the trigger of the first indication information, and the terminal device reports the CSI according to the trigger of the first indication information. The embodiment can bind the triggering of the reference signal and the triggering of the CSI reporting, and indicate by using the same signaling, which is beneficial to reducing the overhead of signaling design.

As an optional embodiment, the random access response is a random access response in a contention-based random access procedure.

It should be appreciated that for non-contention based random access, the CSI request field in the random access response is used to decide whether aperiodic CSI reports are included in the corresponding PUSCH transmission. For contention-based random access, the CSI request field in the random access response is reserved, i.e., has no effect. Therefore, for a random access response in a contention-based random access procedure, the first indication information may be a CSI request (CSI request) field in the random access response.

Fig. 3 shows a schematic flow diagram for reporting CSI in a contention-based random access procedure.

In fig. 3, the terminal device may receive the first configuration information and the second configuration information sent by the network device through the multicast message or the broadcast message, so as to obtain the configuration situation of the reference signal and the CSI report.

When the cell where the network device is located needs to be accessed, the terminal device may randomly select a random access preamble, send a random access request to the network device, and request to access the cell where the network device is located. (i.e., step one in the contention-based random access procedure described above)

And the network equipment sends a random access response according to the random access request, and the random access response carries first indication information so as to trigger the sending of the reference signal and/or the reporting of the CSI. (i.e., step two in the contention-based random access procedure described above)

The network equipment sends a reference signal to the terminal equipment, and the terminal equipment receives the reference signal and obtains CSI according to the reference signal.

And the terminal equipment sends a PUSCH to the network equipment, and the PUSCH carries the CSI, namely the CSI is reported through the PUSCH. (i.e., step three in the contention-based random access procedure described above)

The network device sends a contention resolution message to the terminal device. (i.e., step four in the contention-based random access procedure described above)

In this embodiment of the present application, before the terminal device has not completed initial random access (i.e., is in an RRC connected state), the network device may configure reporting of the reference signal and the CSI through a multicast message or a broadcast message, and before the terminal device completes initial access, the terminal device may report the CSI according to configuration information of the multicast message or the broadcast message and first indication information carried in a random access response, so that a PDSCH that the network device sends the terminal device may perform link adaptation for data transmission using the CSI, which is beneficial to improving transmission efficiency of a PDSCH before the initial access is completed, and further improving system performance. In addition, the embodiment of the application adopts aperiodic CSI reporting, so that the resource overhead of sending the reference signal by the network equipment can be reduced, and meanwhile, the CSI reporting overhead of the terminal equipment is reduced as much as possible.

As an optional embodiment, the method further comprises: the terminal device receives first indication information from the network device, where the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, and the first indication information is carried in any one of the following information:

downlink control information used for scheduling a Physical Uplink Shared Channel (PUSCH); or the like, or, alternatively,

random access response corresponding downlink control information; or the like, or, alternatively,

downlink control information corresponding to the system message; or the like, or, alternatively,

and the downlink control information corresponding to the paging message.

As an optional embodiment, the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.

Illustratively, the time domain resource is a slot, and assuming that the number of ports of the reference signal is 4 ports by default, the time frequency resource occupied in the slot is a fixed mapping pattern, wherein the frequency domain bandwidth of the reference signal and the mapping pattern on the frequency domain (e.g. each physical resource block) are predefined well. And a transmission time slot of the reference signal (for example, a starting time slot number of the reference signal transmission) may have a certain binding relationship with a time slot of the downlink control information triggering the reference signal. For example, a time slot offset between a starting transmission time slot of the reference signal and a starting transmission time slot of the downlink control information triggering the reference signal may be predefined, so that the terminal device may determine the starting transmission time slot of the reference signal according to the predefined time slot offset and the starting transmission time slot of the downlink control information, that is, the starting transmission time slot of the reference signal does not need to be notified to the terminal device by the network device through explicit signaling. Illustratively, the time slot offset between the initial transmission time slot of the reference signal and the initial transmission time slot of the downlink control information triggering the reference signal is 0, that is, the initial transmission time slot of the reference signal and the initial transmission time slot of the downlink control information triggering the reference signal are the same time slot. Illustratively, the initial transmission timeslot of the reference signal is an xth timeslot after the initial transmission timeslot of the downlink control information triggering the reference signal, and x is an integer greater than or equal to 1.

As an optional embodiment, the CSI reporting configuration is similar, and the network device may only support the type 1 wideband CSI reporting mode in a default CSI reporting mode, where the definition of the type 1 wideband CSI reporting mode is the same as that defined in the 3rd generation partnership project (3 GPP) release 15(release 15), and the type 1 indicates that the PMI type in the CSI reporting is type 1.

The embodiment of the present application further provides another communication method 400, as shown in fig. 4. The method 400 may be applied to the communication system 100 shown in fig. 1, but the embodiment of the present application is not limited thereto.

S410, the terminal device sends a random access request to the network device, wherein the random access request is used for requesting to access a cell where the network device is located; correspondingly, the network device receives the random access request.

S420, if the network device sends a random access response to the terminal device, and correspondingly, the terminal device receives the random access response, where the random access response is a random access response in a contention-based random access process, and the random access response carries first indication information, where the first indication information is used to trigger sending of a reference signal and/or reporting of channel state information CSI.

Further, the terminal device may receive a reference signal sent by the network device according to the trigger of the first indication information, obtain CSI according to the reference signal, and report the CSI.

According to the communication method, in the contention-based random access process, the sending of the reference signal and/or the reporting of the CSI are/is triggered through the first indication information in the random access response, the terminal equipment can report the CSI before the initial access is completed, and the PDSCH sent to the terminal equipment by the network equipment can perform link adaptation of data transmission by using the CSI, so that the transmission efficiency of the PDSCH before the initial access is completed is improved, and the system performance is improved.

In one possible implementation of the method 400, the method further includes: the network device sends first configuration information and second configuration information through a first message, and correspondingly, the terminal device receives the first configuration information and the second configuration information through the first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring the report of CSI;

the network equipment sends a reference signal, and the terminal equipment receives the reference signal from the network equipment according to the first configuration information and obtains CSI according to the reference signal;

after the terminal device receives the random access response from the network device, the method further comprises:

and the terminal equipment reports the CSI to network equipment according to the second configuration information and the first indication information.

As an optional embodiment, the first configuration information includes a type of the reference signal, and the type of the reference signal includes a non-zero power reference signal and a zero power reference signal, where the non-zero power reference signal is used for measuring a channel, and the zero power reference signal is used for measuring interference.

As an optional embodiment, the second configuration information includes reporting content of the CSI, where the reporting content of the CSI includes at least one of: channel quality indication CQI, rank indication RI, precoding matrix indication PMI, reference signal resource index.

As an alternative embodiment, the first message is a system message or a paging message.

The steps of the method 400 and the transmitted messages are similar to those of the method 200, and reference may be made to the description of the method 200, which is not repeated here.

It should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method according to the embodiment of the present application is described in detail above with reference to fig. 1 to 4, and the apparatus according to the embodiment of the present application is described in detail below with reference to fig. 5 to 7.

Fig. 5 illustrates an apparatus 500 provided by an embodiment of the present application. The apparatus 500 may be a terminal device, or may be an apparatus capable of supporting the terminal device to implement its function, for example, a chip or a chip system that may be used in the terminal device. The apparatus 500 comprises: a receiving unit 510, a processing unit 520 and a transmitting unit 530.

Wherein the receiving unit 510 is configured to: receiving first configuration information and second configuration information from network equipment through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring reporting of Channel State Information (CSI); and receiving a reference signal from the network device according to the first configuration information;

the processing unit 520 is configured to: obtaining CSI according to the reference signal;

the sending unit 530 is configured to: and reporting the CSI to the network equipment according to the second configuration information.

Optionally, the receiving unit 510 is further configured to: receiving a random access response from the network device, where the random access response carries first indication information, and the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI.

Optionally, the random access response is a random access response in a contention-based random access procedure.

Optionally, the receiving unit 510 is further configured to: receiving first indication information from the network device, where the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, and the first indication information is carried in any one of the following information: downlink control information used for scheduling a Physical Uplink Shared Channel (PUSCH); or, the random access responds to the corresponding downlink control information; or, downlink control information corresponding to the system message; or, the downlink control information corresponding to the paging message.

Optionally, the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.

Optionally, the first configuration information includes a type of the reference signal, where the type of the reference signal includes a non-zero power reference signal and a zero power reference signal, where the non-zero power reference signal is used to measure a channel, and the zero power reference signal is used to measure interference.

Optionally, the second configuration information includes reporting content of the CSI, where the reporting content of the CSI includes at least one of: channel quality indication CQI, rank indication RI, precoding matrix indication PMI, reference signal resource index.

Optionally, the first message is a system message or a paging message.

It should be appreciated that the apparatus 500 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an optional example, it may be understood by those skilled in the art that the apparatus 500 may be specifically a terminal device in the foregoing embodiment, and the apparatus 500 may be configured to execute each procedure and/or step corresponding to the terminal device in the foregoing method embodiment, and in order to avoid repetition, details are not described here again.

Fig. 6 illustrates another apparatus 600 provided by an embodiment of the present application. The apparatus 600 may be a network device, or may be an apparatus capable of supporting the network device to implement its function, for example, a chip or a chip system that may be used in the network device. The apparatus 600 comprises: a transmitting unit 610 and a receiving unit 620.

Wherein, the sending unit 610 is configured to: sending first configuration information and second configuration information through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring reporting of Channel State Information (CSI); and transmitting the reference signal according to the first configuration information;

the receiving unit 620 is configured to: and receiving the CSI reported by the terminal equipment according to the second configuration information.

Optionally, the sending unit 610 is further configured to: sending a random access response to the terminal device before sending the reference signal according to the first configuration information, where the random access response carries first indication information, and the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI.

Optionally, the sending unit 610 is further configured to: sending first indication information before sending the reference signal according to the first configuration information, where the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, and the first indication information is carried in any one of the following information: downlink control information used for scheduling a Physical Uplink Shared Channel (PUSCH); or, the random access responds to the corresponding downlink control information; or, downlink control information corresponding to the system message; or, the downlink control information corresponding to the paging message.

Optionally, the first message is a system message or a paging message.

It should be appreciated that the apparatus 600 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an optional example, it may be understood by those skilled in the art that the apparatus 600 may be embodied as a network device in the foregoing embodiment, and the apparatus 600 may be configured to perform each procedure and/or step corresponding to the network device in the foregoing method embodiment, and in order to avoid repetition, details are not described here again.

The apparatus 500 of each of the above schemes has a function of implementing corresponding steps executed by the terminal device in the above method; the apparatus 600 has the functionality to implement the corresponding steps performed by the network device in the above-described method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software comprises one or more modules corresponding to the functions; for example, the transmitting unit and the receiving unit may be replaced by a communication interface, and other units, such as a processing unit and the like, may be replaced by a processor, to perform the transceiving operation and the related processing operation in each method embodiment, respectively. In the embodiment of the present application, the communication interface may be a circuit, a module, a bus interface, a transceiver, or the like, which may implement a communication function.

In the embodiments of the present application, the apparatuses in fig. 5 and fig. 6 may also be a chip or a chip system, for example: system on chip (SoC). Correspondingly, the receiving unit and the transmitting unit may be a transceiver circuit of the chip, and are not limited herein.

Fig. 7 illustrates another apparatus 700 provided by an embodiment of the present application. The apparatus 700 includes a processor 710, a transceiver 720. Optionally, the apparatus 700 may further comprise a memory 750. Optionally, memory 750 may be included in processor 710. The processor 710, the transceiver 720 and the memory 750 are in communication with each other through an internal connection path, the memory 750 is configured to store instructions, and the processor 710 is configured to execute the instructions stored in the memory 750, so as to implement the method provided by the embodiment of the present application.

In a possible implementation manner, the apparatus 700 is configured to execute various flows and steps corresponding to terminal devices in the method provided in the embodiment of the present application.

Wherein the transceiver 720 is configured to: receiving first configuration information and second configuration information from network equipment through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring reporting of Channel State Information (CSI); and receiving a reference signal from the network device according to the first configuration information; the processor 710 is configured to: obtaining CSI according to the reference signal; the transceiver 720 is also operable to: and reporting the CSI to the network equipment according to the second configuration information.

In a possible implementation manner, the apparatus 700 is configured to execute various flows and steps corresponding to network devices in the method provided in the embodiment of the present application.

Wherein the transceiver 720 is configured to: sending first configuration information and second configuration information through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring reporting of Channel State Information (CSI); transmitting the reference signal according to the first configuration information; and receiving the CSI reported by the terminal equipment according to the second configuration information. .

It should be understood that the apparatus 700 may be embodied as a terminal device or a network device in the foregoing embodiments, and may be configured to perform each step and/or flow corresponding to the terminal device or the network device in the foregoing method embodiments. Memory 750 may alternatively comprise read-only memory and random access memory, and provides instructions and data to the processor. The portion of memory may also include non-volatile random access memory. For example, the memory may also store device type information. Processor 710 may be configured to execute instructions stored in the memory, and when processor 710 executes instructions stored in the memory, processor 710 is configured to perform the various steps and/or flows of the method embodiments described above corresponding to the terminal device or network device.

It should be understood that in the embodiment of the present application, the processor of the above apparatus may be a Central Processing Unit (CPU), and the processor may also be other general processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software elements in a processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory, in combination with hardware thereof, to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code which, when run on a computer, causes the computer to perform the method of any of the above embodiments.

According to the method provided by the embodiment of the present application, a computer-readable medium is further provided, and the computer-readable medium stores program codes, and when the program codes are executed on a computer, the computer is caused to execute the method of any one of the embodiments shown in fig. 2 to 4.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the foregoing one or more terminal devices and one or more network devices.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "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 and c can be single or multiple.

Those of ordinary skill in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or combinations of both, and that the steps and elements of the various embodiments have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In the embodiments of the present application, the embodiments may refer to each other, for example, methods and/or terms between the embodiments of the method may refer to each other, for example, functions and/or terms between the embodiments of the apparatus and the embodiments of the method may refer to each other, without logical contradiction.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium.

The method provided by the embodiment of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a user device, or other programmable apparatus. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., SSD), among others.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for reporting channel state information, comprising:

the method comprises the steps that terminal equipment receives first configuration information and second configuration information from network equipment through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring reporting of Channel State Information (CSI);

the terminal equipment receives a reference signal from the network equipment according to the first configuration information, and acquires CSI according to the reference signal;

and the terminal equipment reports the CSI to the network equipment according to the second configuration information.

2. The method of claim 1, further comprising:

and the terminal equipment receives a random access response from the network equipment, wherein the random access response carries first indication information, and the first indication information is used for triggering the sending of the reference signal and/or the reporting of the CSI.

3. The method of claim 2, wherein the random access response is a random access response in a contention-based random access procedure.

4. The method of claim 1, further comprising:

the terminal device receives first indication information from the network device, where the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, and the first indication information is carried in any one of the following information:

and the downlink control information corresponding to the paging message.

5. The method of claim 4, wherein the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.

6. The method according to any of claims 1 to 5, wherein the first configuration information comprises a type of the reference signal, and the type of the reference signal comprises a non-zero power reference signal and a zero power reference signal, wherein the non-zero power reference signal is used for measuring a channel, and the zero power reference signal is used for measuring interference.

7. The method according to any of claims 1 to 6, wherein the second configuration information includes a reporting content of the CSI, and the reporting content of the CSI includes at least one of:

channel quality indication CQI, rank indication RI, precoding matrix indication PMI, reference signal resource index.

8. The method according to any of claims 1 to 7, wherein the first message is a system message or a paging message.

9. A method of measuring channel state information, comprising:

the method comprises the steps that network equipment sends first configuration information and second configuration information through a first message, wherein the first message is a multicast message or a broadcast message, the first configuration information is used for configuring a reference signal, and the second configuration information is used for configuring reporting of Channel State Information (CSI);

the network equipment sends the reference signal according to the first configuration information;

and the network equipment receives CSI reported by the terminal equipment according to the second configuration information.

10. The method of claim 9, wherein before the network device transmits the reference signal according to the first configuration information, the method further comprises:

and the network equipment sends a random access response to the terminal equipment, wherein the random access response carries first indication information, and the first indication information is used for triggering the sending of the reference signal and/or the reporting of the CSI.

11. The method of claim 10, wherein the random access response is a random access response in a contention-based random access procedure.

12. The method of claim 9, wherein before the network device transmits the reference signal according to the first configuration information, the method further comprises:

the network device sends first indication information, where the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, and the first indication information is carried in any one of the following information:

and the downlink control information corresponding to the paging message.

13. The method of claim 12, wherein the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.

14. The method according to any of claims 9 to 13, wherein the first configuration information comprises a type of the reference signal, and the type of the reference signal comprises a non-zero power reference signal and a zero power reference signal, wherein the non-zero power reference signal is used for measuring a channel, and the zero power reference signal is used for measuring interference.

15. The method according to any of claims 9 to 14, wherein the second configuration information includes a reporting content of the CSI, and the reporting content of the CSI includes at least one of:

16. The method according to any of claims 9 to 15, wherein the first message is a system message or a paging message.

17. An apparatus for reporting channel state information, comprising:

a receiving unit, configured to receive first configuration information and second configuration information from a network device through a first message, where the first message is a multicast message or a broadcast message, the first configuration information is used to configure a reference signal, and the second configuration information is used to configure reporting of channel state information CSI; and receiving a reference signal from the network device according to the first configuration information;

a processing unit, configured to obtain CSI according to the reference signal;

and the sending unit is used for reporting the CSI to the network equipment according to the second configuration information.

18. The apparatus of claim 17, wherein the receiving unit is further configured to:

receiving a random access response from the network device, where the random access response carries first indication information, and the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI.

19. The apparatus of claim 18, wherein the random access response is a random access response in a contention-based random access procedure.

20. The apparatus of claim 17, wherein the receiving unit is further configured to:

receiving first indication information from the network device, where the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, and the first indication information is carried in any one of the following information:

and the downlink control information corresponding to the paging message.

21. The apparatus of claim 20, wherein the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.

22. The apparatus of any one of claims 17 to 21, wherein the first configuration information comprises a type of the reference signal, and wherein the type of the reference signal comprises a non-zero power reference signal and a zero power reference signal, wherein the non-zero power reference signal is used for measuring a channel, and the zero power reference signal is used for measuring interference.

23. The apparatus according to any of claims 17 to 22, wherein the second configuration information includes a reporting content of the CSI, and the reporting content of the CSI includes at least one of:

24. The apparatus according to any of claims 17 to 23, wherein the first message is a system message or a paging message.

25. An apparatus for measuring channel state information, comprising:

a sending unit, configured to send first configuration information and second configuration information through a first message, where the first message is a multicast message or a broadcast message, the first configuration information is used to configure a reference signal, and the second configuration information is used to configure reporting of channel state information CSI; and transmitting the reference signal according to the first configuration information;

and the receiving unit is used for receiving the CSI reported by the terminal equipment according to the second configuration information.

26. The apparatus of claim 25, wherein the sending unit is further configured to:

sending a random access response to the terminal device before sending the reference signal according to the first configuration information, where the random access response carries first indication information, and the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI.

27. The apparatus of claim 26, wherein the random access response is a random access response in a contention-based random access procedure.

28. The apparatus of claim 25, wherein the sending unit is further configured to:

sending first indication information before sending the reference signal according to the first configuration information, where the first indication information is used to trigger sending of the reference signal and/or reporting of the CSI, and the first indication information is carried in any one of the following information:

and the downlink control information corresponding to the paging message.

29. The apparatus of claim 28, wherein the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.

30. The apparatus of any one of claims 25-29, wherein the first configuration information comprises a type of the reference signal, and wherein the type of the reference signal comprises a non-zero power reference signal and a zero power reference signal, and wherein the non-zero power reference signal is used for measuring a channel and the zero power reference signal is used for measuring interference.

31. The apparatus according to any of claims 25 to 30, wherein the second configuration information includes a reporting content of the CSI, and the reporting content of the CSI includes at least one of:

32. The apparatus according to any of claims 25 to 31, wherein the first message is a system message or a paging message.

33. A communication system comprising the apparatus of any of claims 17 to 24 and the apparatus of any of claims 25 to 32.

34. A computer-readable storage medium, having stored thereon a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 16.

35. A chip system, comprising: a processor for calling and running a computer program from a memory so that a communication device in which the system-on-chip is installed performs the method of any one of claims 1 to 16.