WO2021017773A1 - 上报信道状态信息的方法和装置 - Google Patents

上报信道状态信息的方法和装置 Download PDF

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Publication number
WO2021017773A1
WO2021017773A1 PCT/CN2020/100659 CN2020100659W WO2021017773A1 WO 2021017773 A1 WO2021017773 A1 WO 2021017773A1 CN 2020100659 W CN2020100659 W CN 2020100659W WO 2021017773 A1 WO2021017773 A1 WO 2021017773A1
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Prior art keywords
reference signal
csi
configuration information
message
information
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PCT/CN2020/100659
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English (en)
French (fr)
Inventor
刘建琴
李雪茹
刘鹍鹏
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华为技术有限公司
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Publication of WO2021017773A1 publication Critical patent/WO2021017773A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]

Definitions

  • This application relates to the field of communications, and in particular to a method and device for reporting channel state information in the field of communications.
  • the sender needs to know accurate channel state information (channel state information, CSI).
  • CSI channel state information
  • the sender can measure the reference signal sent by the network device to obtain the CSI, and feed the CSI back to the network device for link adaptation of the network device for subsequent data transmission.
  • the CSI configuration information is configured by dedicated radio resource control (radio resource control, RRC) signaling, and after the terminal device enters the RRC connected state after completing the initial random access procedure, it can be configured through dedicated RRC signaling, and The above configuration takes a certain amount of time to take effect. Therefore, configuring the CSI report of the terminal device through dedicated RRC signaling is only applicable to the terminal device in the RRC connected state.
  • RRC radio resource control
  • the present application provides a method and device for measuring channel state information, which is beneficial to improve the transmission efficiency of the PDSCH sent by the network device to the terminal device before the terminal device establishes a connection with the network device, thereby improving system performance.
  • a method for reporting channel state information including: a terminal device receives 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 the reporting of channel state information CSI; the terminal device receives the reference signal from the network device according to the first configuration information , And obtain CSI according to the reference signal; the terminal device reports the CSI to the network device according to the second configuration information.
  • 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 a multicast message or a broadcast message without using dedicated RRC signaling.
  • the reporting of reference signals and CSI can be configured through multicast messages or broadcast messages.
  • the terminal device reports the CSI according to the configuration information of the multicast message or the broadcast message, and the PDSCH sent by the network device to the terminal device can use the CSI for link adaptation of data transmission, which is beneficial to improve the initial access.
  • the transmission efficiency of the PDSCH before the input is completed, thereby improving system performance.
  • the method of the embodiment of the present application is beneficial to improve the transmission efficiency of PDSCH carrying RRC signaling, thereby helping terminal devices and network devices to quickly Perform actual data service transmission.
  • the method further includes: the terminal device receives a random access response from the network device, the random access response carrying first indication information, The first indication information is used to trigger transmission of the reference signal and/or report of the CSI.
  • CSI reporting is divided into periodic reporting and non-periodic reporting, in order to reduce the resource overhead of network equipment sending reference signals, and at the same time to minimize the terminal equipment’s reporting overhead of CSI, network equipment sends reference signals and/or terminal equipment reports CSI , You can use a non-periodic method, that is, triggered on demand.
  • the random access response is a random access response in a contention-based random access process.
  • the CSI request (CSI request) field in the random access response is used to determine whether the corresponding PUSCH transmission includes aperiodic CSI reporting.
  • the CSI request field in the random access response is reserved, that is, it has no effect. Therefore, for the random access response in the contention-based random access process, the above-mentioned first indication information may be the CSI request field in the random access response.
  • first indication information may also be other fields or newly added fields in the random access response, which is not limited in the embodiment of the present application.
  • the number of bits of the first indication information is an integer greater than or equal to 1.
  • the number of bits of the first indication information is an integer greater than or equal to 1 and less than or equal to 2.
  • the method further includes: the terminal device receiving first indication information from the network device, the first indication information being used to trigger the reference For signal transmission and/or the CSI report, the first indication information is carried in any of the following information: downlink control information for scheduling the physical uplink shared channel PUSCH; or, downlink control corresponding to the random access response Information; or, downlink control information corresponding to system messages; or, downlink control information corresponding to paging messages.
  • the first indication information used to trigger the transmission of the reference signal and/or the reporting of the CSI carries downlink control information (DCI), and the DCI may be a downlink control used to schedule PUSCH.
  • DCI downlink control information
  • Information for example, DCI format 0_0
  • the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.
  • the relationship between the time domain resource of the reference signal and the time domain resource used to trigger the downlink control information of the reference signal can be defined in advance, so that the network equipment and the terminal equipment can be based on the time domain of the downlink control information.
  • Resources determine the time domain resources of the reference signal.
  • the time domain resource may be a subframe, a time slot, or a symbol (for example, an orthogonal frequency division multiplexing (OFDM) symbol), etc., which is not limited in the embodiment of the present application.
  • 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, wherein, The non-zero power reference signal is used to measure the channel, and the zero power reference signal is used to measure interference.
  • the second configuration information includes reported content of the CSI
  • the reported content of the CSI includes at least one of the following: channel quality indicator CQI, rank indicator RI ,
  • the precoding matrix indicates PMI and reference signal resource index.
  • the first message is a system message or a paging message.
  • the foregoing first message may be any one of a system message, a random access response message, or a paging message, which is not limited in the embodiment of the present application.
  • the first message is the remaining minimum system information (RMSI), also called system information block 1 (system information block 1, SIB 1), or other system information (other system information). system information, OSI).
  • another method for measuring channel state information including: a network device sends first configuration information and second configuration information through a first message, where the first message is a multicast message or a broadcast message, and The first configuration information is used to configure the reference signal, the second configuration information is used to configure the reporting of channel state information CSI; the network device sends the reference signal according to the first configuration information; the network device receives the terminal CSI reported by the device according to the second configuration information.
  • the method before the network device sends the reference signal according to the first configuration information, the method further includes: the network device sends the reference signal to the terminal The device sends a random access response, where the random access response carries first indication information, and the first indication information is used to trigger the sending of the reference signal and/or the reporting of the CSI.
  • the random access response is a random access response in a contention-based random access process.
  • the method before the network device sends the reference signal according to the first configuration information, the method further includes: the network device sends a first instruction Information, the first indication information is used to trigger the transmission of the reference signal and/or the reporting of the CSI, and the first indication information is carried in any of the following information: used to schedule the physical uplink shared channel PUSCH Downlink control information; or, the downlink control information corresponding to the random access response; or, the downlink control information corresponding to the system message; or, the downlink control information corresponding to the paging message.
  • the network device sends a first instruction Information
  • the first indication information is used to trigger the transmission of the reference signal and/or the reporting of the CSI
  • the first indication information is carried in any of the following information: used to schedule the physical uplink shared channel PUSCH Downlink control information; or, the downlink control information corresponding to the random access response; or, the downlink control information corresponding to the system message; or, the downlink control information corresponding to the paging message.
  • the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.
  • 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, wherein, The non-zero power reference signal is used to measure the channel, and the zero power reference signal is used to measure interference.
  • the second configuration information includes reported content of the CSI
  • the reported content of the CSI includes at least one of the following: channel quality indicator CQI, rank indicator RI ,
  • the precoding matrix indicates PMI and reference signal resource index.
  • the first message is a system message or a paging message.
  • a communication method including: a terminal device sends a random access request to a network device, the random access request is used to request access to a cell where the network device is located; The random access response of the network device, where 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 Trigger the sending of the reference signal and/or the reporting of the channel state information CSI.
  • the method further includes: the terminal device receives the first configuration information and the second configuration information from the network device through a first message, the first A message is a multicast message or a broadcast message, the first configuration information is used to configure the reference signal, and the second configuration information is used to configure reporting of the CSI; the terminal device is based on the first configuration information , Receiving the reference signal from the network device, and obtaining the CSI according to the reference signal; after the terminal device receives the random access response from the network device, the method further includes: The terminal device reports the CSI to the network device according to the second configuration information and the first indication information.
  • 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, wherein, The non-zero power reference signal is used to measure the channel, and the zero power reference signal is used to measure interference.
  • the second configuration information includes reported content of the CSI
  • the reported content of the CSI includes at least one of the following: channel quality indicator CQI, rank indicator RI ,
  • the precoding matrix indicates PMI and reference signal resource index.
  • the first message is a system message or a paging message.
  • another communication method including: a network device receives a random access request from a terminal device, where the random access request is used to request access to a cell where the network device is located; The terminal device sends a random access response, the random access response being a random access response in a contention-based random access process, the random access response carrying first indication information, and the first indication information is used Used to trigger the transmission of reference signals and/or the reporting of channel state information CSI.
  • the method further includes: the network device sends the first configuration information and the second configuration information to the terminal device through a first message, and the first The message is a multicast message or a broadcast message, the first configuration information is used to configure the reference signal, and the second configuration information is used to configure the reporting of the CSI; the network device sends a random message to the terminal device
  • the method further includes: the network device sends the reference signal to the terminal device according to the first configuration information and the first indication information; the network device according to the second Configuration information, receiving the CSI reported by the terminal device according to the reference signal and the second configuration information.
  • 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, wherein, The non-zero power reference signal is used to measure the channel, and the zero power reference signal is used to measure interference.
  • the second configuration information includes the reported content of the CSI
  • the reported content of the CSI includes at least one of the following: channel quality indicator CQI, rank indicator RI ,
  • the precoding matrix indicates PMI and reference signal resource index.
  • the first message is a system message or a paging message.
  • a device for executing the above aspects or the methods in any possible implementation manners of the aspects.
  • the device includes a unit for executing the above-mentioned aspects or methods in any possible implementation manners of the aspects.
  • the device may include modules that perform one-to-one correspondence of the methods/operations/steps/actions described in the above aspects.
  • the modules may be hardware circuits, software, or hardware circuits combined with software. achieve.
  • the device is a communication chip
  • the communication chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • the device is a communication device, and the communication device may include a transmitter for sending information or data, and a receiver for receiving information or data.
  • the device is used to execute the above aspects or the methods in any possible implementation of each aspect.
  • the device can be configured in the above terminal equipment or network equipment, or the device itself is the above terminal equipment. Or network equipment.
  • another device including a processor, a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the device executes any of the above aspects.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory and the processor may be provided separately.
  • the communication device further includes a transmitter (transmitter) and a receiver (receiver).
  • the transmitter and the receiver can be arranged separately or integrated together, which is called a transceiver (transceiver).
  • a communication system including a device for implementing the first aspect or any possible method of the first aspect, and a device for implementing any of the second aspect or the second aspect Possible implementation of the method; or,
  • the communication system may also include other devices that interact with terminal devices and/or network devices in the solution provided in the embodiments of the present application.
  • a computer program product includes: a computer program (also called code, or instruction), which when the computer program is executed, causes a computer to execute any of the above aspects.
  • a computer program also called code, or instruction
  • a computer-readable medium stores a computer program (also called code, or instruction) when it runs on a computer, so that the computer executes any of the above aspects.
  • a computer program also called code, or instruction
  • a chip system including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory so that a communication device installed with the chip system executes the above Any one of the possible implementation methods in each aspect.
  • the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.
  • Fig. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a method for reporting channel state information provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart 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 by an embodiment of the present application.
  • Fig. 5 is a schematic block diagram of a device provided by an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of another device 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.
  • LTE long term evolution
  • FDD frequency division duplex
  • UMTS universal mobile telecommunication system
  • 5G fifth generation
  • NR new radio
  • the terminal equipment in the embodiments of this application may also be called: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • access terminal user unit, user station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device may be a device that provides voice/data connectivity to users, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and so on.
  • some examples of terminals are: mobile phones (mobile phones), tablets, notebook computers, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, and augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocols , SIP) phone, wireless local loop (WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, vehicle Devices, wearable devices, terminal devices in a 5G network, or terminal devices in a public land mobile network (PLMN) that will evolve in
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • the terminal device may also be a terminal device in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • the IoT is an important part of the development of information technology in the future. Its main technical feature is to pass items through communication technology. Connect with the network to realize the intelligent network of human-machine interconnection and interconnection of things.
  • the network device in the embodiment of the present application may be a device used to communicate with terminal devices.
  • the network device may also be called an access network device or a wireless access network device, and may be a transmission reception point (TRP). ), it can also be an evolved NodeB (evolved NodeB, eNB or eNodeB) in the LTE system, a home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU) , It can also be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a 5G network or
  • the network equipment in the future evolved PLMN network may be an access point (AP) in a WLAN, or a gNB in a new radio system (new radio, NR) system, which is not limited in the embodiment of the present application.
  • AP access
  • 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).
  • CU centralized unit
  • DU distributed unit
  • RAN device including a CU node and a DU node, or a control plane CU node (CU).
  • -CP node user plane CU node
  • CU-UP node user plane CU node
  • RAN equipment of DU node 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 user plane CU node (CU-UP node) and RAN equipment of DU node.
  • the network equipment provides services for the cell, and the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network equipment.
  • the cell may belong to a macro base station (for example, a macro eNB or a macro gNB, etc.) , It may also belong to the base station corresponding to the small cell, where the small cell may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.
  • 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 memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution subject of the methods provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided according to the embodiments of the application.
  • the execution subject of the method provided in the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.
  • various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture used in this application encompasses a computer program that can be accessed from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • Fig. 1 shows a communication system 100 applied in an embodiment of the present application.
  • the communication system 100 may include at least one network device 110.
  • the network device 110 may be a device that communicates with terminal devices, and each network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices (such as UE) located in the 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 fixed.
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, and the embodiment of the present application is not limited thereto.
  • the random access process refers to the process starting from the network device sending the random access preamble, trying to access the network and establishing a basic signaling connection with the network. It should be understood that random access is initiated in idle mode or connected mode, mainly to obtain uplink synchronization with network equipment and apply for uplink resources. Random access is mainly used in the initial access period before the establishment of the radio resource control connection and the RRC connection re-establishment period.
  • Random access is divided into contention-based random access and non-contention-based random access.
  • the terminal device can use the random access code allocated by the network device to initiate random access. This type of random access includes the terminal device sending a random access request and the network device sending random access. Enter the response in two steps.
  • the terminal device can randomly select the random access preamble to initiate random access. Since the random access preamble can be selected by multiple different terminal devices in a resource pool, it will lead to resource competition The problem. In this case, the network device needs to send a contention resolution message to the terminal device. Therefore, the contention-based random access procedure includes the following four steps:
  • Step 1 The terminal device randomly selects a random access preamble, and sends a random access request on a physical random access channel (physical random access channel);
  • Step 2 The network device detects the random access request carrying the random access preamble, and then sends a random access response.
  • the random access response may include the number of the random access preamble received by the network device and the network The time adjustment amount of the random access preamble received by the device, and information used to indicate the location of the uplink resource allocated by the network device to the terminal device;
  • Step 3 The terminal device receives the random access response sent by the network device, and sends an uplink message (that is, physical uplink shared channel (PUSCH)) on the uplink resource indicated by the random access response, and the uplink message can be Including the unique identifier of the terminal device (for example, temporary mobile subscriber identity (TMSI)) or corresponding random access identifier;
  • PUSCH physical uplink shared channel
  • Step 4 The network device receives the uplink message sent by the aforementioned terminal device, and sends a contention resolution message to the successfully accessed terminal device.
  • the contention resolution message may include the unique ID (such as TMSI) of the successfully accessed terminal device or the corresponding Random access identification.
  • the network device is required to resolve the contention through step 4 above. .
  • CSI usually includes a precoding matrix indicator (PMI), a channel quality indicator (CQI), and a rank indicator (RI).
  • PMI is used to indicate the precoding matrix, and the network device can select the precoding matrix for precoding data according to the PMI
  • CQI indicates the channel quality, which is used by the network device to provide a reference for determining the modulation and coding scheme
  • RI indicates that the network device can For the number of data layers transmitted to the terminal at the same time, the larger the RI, the more data layers are transmitted simultaneously.
  • the choice of PMI is often related to the channel matrix between the network equipment and the terminal. The higher the matching degree between the precoding matrix represented by the PMI and the channel matrix, the network equipment selects the precoding matrix to precode the data according to the PMI, which can better Suppress multi-user interference.
  • the terminal device can measure the reference signal sent by the network device to obtain the CSI, and feed the CSI back to the network device for link adaptation of the network device for subsequent data transmission.
  • the reference signal may include, for example, a channel state information reference signal (channel state information reference signal, CSI-RS).
  • the reference signal resource may include, for example, a CSI-RS resource (CSI-RS resource).
  • each reference signal resource may correspond to an index of a reference signal resource.
  • CSI-RS resources may be distinguished by a CSI-RS index (such as CSI-RS index).
  • the configuration information of CSI is configured by dedicated radio resource control (RRC) signaling.
  • RRC radio resource control
  • this application provides a method for terminal devices that have not established a connection with network devices (for example, terminal devices that are in the RRC connection state, or terminal devices before the initial access is completed). It is beneficial to improve the transmission efficiency of the physical downlink shared channel (PDSCH) between the terminal device and the network device.
  • PDSCH physical downlink shared channel
  • "used to indicate” may include used for direct indication and used for indirect indication, and may also include explicit indication and implicit indication.
  • the information indicated by a certain piece of information is called information to be indicated.
  • the information to be indicated can be directly indicated, such as the information to be indicated or the information to be indicated. Index of the information to be indicated, etc.
  • the information to be indicated can also be indicated indirectly by indicating other information, where there is an association relationship 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, and other parts of the information to be indicated are known or agreed in advance. For example, it is also possible to use a pre-arranged (for example, protocol stipulation) whether there is a certain cell to indicate the information to be indicated, thereby reducing the indication overhead to a certain extent.
  • protocol stipulation for example, protocol stipulation
  • pre-defined may be a protocol definition. Among them, "pre-defined” can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in the equipment (for example, including terminal equipment and network equipment). This application does not make any specific implementation methods. limited.
  • the "protocols” involved in the embodiments of this application may refer to standard protocols in the communication field, for example, may include long term evolution (LTE) protocols, new radio (NR) protocols, and future communications
  • LTE long term evolution
  • NR new radio
  • future communications The relevant agreements in the system are not limited in this application.
  • terminal equipment can be replaced with a device or chip that can realize functions similar to the terminal equipment, and the network equipment can also be replaced with a function similar to the network equipment.
  • the name of the device or chip is not limited in the embodiment of this application.
  • FIG. 2 shows a schematic flowchart of a method 200 for reporting channel state information according to an embodiment of the present application.
  • the method 200 can be applied to the communication system 100 shown in FIG. 1, but the embodiment of the present application is not limited thereto.
  • the network device sends 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 the reference signal, and the second configuration information is used to configure CSI reporting; correspondingly, the terminal device can receive the above-mentioned first configuration information and second configuration information through the first message.
  • S220 The network device sends a reference signal according to the first configuration information.
  • the terminal device receives a reference signal from the network device according to the foregoing first configuration information, and obtains CSI according to the reference signal.
  • S240 The terminal device reports the CSI to the network device according to the foregoing second configuration information; then, correspondingly, the network device receives the CSI.
  • 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 a multicast message or a broadcast message without using dedicated RRC signaling.
  • the reporting of reference signals and CSI can be configured through multicast messages or broadcast messages.
  • the terminal device reports the CSI according to the configuration information of the multicast message or the broadcast message, and the PDSCH sent by the network device to the terminal device can use the CSI for link adaptation of data transmission, which is beneficial to improve the initial access.
  • the transmission efficiency of the PDSCH before the input is completed, thereby improving system performance.
  • the method of the embodiment of the present application is beneficial to improve the transmission efficiency of PDSCH carrying RRC signaling, thereby helping terminal devices and network devices to quickly Perform actual data service transmission.
  • the above “Report CSI” means 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 the embodiment of the present application refers to any terminal device within the coverage of the network device that can receive the multicast message or broadcast message of the network device. In other words, all terminal devices within the coverage of the network device can report the CSI based on the same first configuration information and the same second configuration information.
  • the foregoing first message may be any one of a system message, a random access response message, or a paging message, which is not limited in the embodiment of the present application.
  • the first message is the remaining minimum system information (RMSI), also called system information block 1 (system information block 1, SIB 1), or other system information (other system information). system information, OSI).
  • first message may be one message or two messages, which is not limited in the embodiment of the present application.
  • first configuration information and the second configuration information can be carried in the same message or in two different messages.
  • first configuration information and the second configuration information may be located in two different fields in the same message.
  • the "first configuration information used to configure the reference signal” means that the first configuration information can configure the reference signal resources (for example, time domain resources, frequency band resources, spatial resources, etc.) and/or transmitted reference signals used for sending the reference signal.
  • the type of reference signal As an optional embodiment, the first configuration information includes the type of the reference signal.
  • the types of the reference signal include a non-zero power reference signal and a zero power reference signal. The non-zero power reference signal is used to measure the channel, and the zero power reference signal is used to measure interference.
  • the interference here refers to inter-cell interference.
  • the "second configuration information used to configure CSI reporting" means that the second configuration information is used to configure resources (for example, time domain resources, frequency domain resources, spatial resources, etc.) and/or CSI content for CSI reporting.
  • the foregoing second configuration information includes the reported content of CSI, and the reported content of CSI may include at least one of the following: channel quality indicator CQI, rank indicator RI, precoding matrix indicator PMI, reference signal resource index .
  • the content of the above CSI report may be to report only CQI, which can minimize the overhead of CSI reporting of the terminal device; or, the content of the above CSI report may be to report RI and CQI, which can effectively support Channel transmission stream adaptation; or, the reported content of the above CSI can be reported RI, PMI, and CQI, this reporting method can maximize the performance of signal transmission; or, the reported content of the above CSI can be reported reference signal resource index and CQI, this reporting method can effectively support the selection of the optimal beam in the multi-beam transmission scenario; or, the content of the above CSI report can be the reported reference signal resource index and RI.
  • This reporting method can support multi-stream and multi-beam flexibility Adaptive. It should be understood that, in addition to the multiple situations listed above, the content of the CST report may also be a combination of other information, which is not limited in the embodiment of the present application.
  • terminal device obtains CSI based on the reference signal means that the terminal device may perform channel measurement on the reference signal configured by the first configuration information to obtain the foregoing CSI, or the terminal device may combine Channel measurement is performed on the reference signal configured by the first configuration information and other reference signals to obtain the aforementioned CSI, which is not limited in the embodiment of the present application.
  • both the first configuration message and the second configuration message are sent through a multicast message or a broadcast message.
  • the first configuration message is sent through a multicast message or a broadcast message
  • the second configuration message may be predefined, or the first configuration message may be predefined Yes
  • the second configuration message is sent through a multicast message or a broadcast message, or part of the content in the first configuration message and/or the second configuration message is predefined. In this way, the signaling overhead for the network device to send the first configuration message and/or the second configuration message can be reduced.
  • CSI reporting is divided into periodic reporting and non-periodic reporting, in order to reduce the resource overhead of network equipment sending reference signals, and at the same time to minimize the terminal equipment’s reporting overhead of CSI, network equipment sends reference signals and/or terminal equipment reports CSI , You can use a non-periodic method, that is, triggered on demand.
  • the method further includes: the terminal device receives a random access response from the network device, the random access response carries first indication information, and the first indication information is used to trigger the sending of the reference signal and / Or CSI report.
  • the random access response is used to instruct the terminal device to transmit physical uplink shared channel (PUSCH) resource information.
  • PUSCH physical uplink shared channel
  • the above first indication information is carried in the random access response sent by the network device, that is, the network device can be in the terminal device In the process of initial random access, the sending of the reference signal and/or the reporting of the CSI is triggered. Since the first indication information is used to trigger the transmission of the reference signal and/or the reporting of the CSI, the embodiment of the present application can be divided into the following three situations:
  • the way that the network device sends the reference signal is aperiodic, and the way that the terminal device reports the CSI can be periodic, or it can report the CSI immediately after measuring the reference signal to obtain the CSI.
  • This embodiment can decouple the trigger of the reference signal and the trigger of the CSI report, which is beneficial to increase the flexibility of signal transmission.
  • the way the network device sends the reference signal can be periodic, and the way the terminal device reports the CSI can be aperiodic.
  • the terminal device performs channel measurement based on the reference signal periodically sent by the network device to obtain the CSI. After that, the CSI is not reported immediately, but is reported according to the first indication information.
  • This embodiment can decouple the trigger of the reference signal and the trigger of the CSI report, which is beneficial to increase the flexibility of signal transmission.
  • the manner in which the network device sends the reference signal is aperiodic, and the manner in which the terminal device reports the CSI 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.
  • This embodiment can bind the trigger of the reference signal and the trigger of the CSI report, and use the same signaling for indication, which is beneficial to reduce the overhead of signaling design.
  • the foregoing random access response is a random access response in a contention-based random access process.
  • the CSI request field in the random access response is used to determine whether the corresponding PUSCH transmission includes aperiodic CSI reporting.
  • the CSI request field in the random access response is reserved, that is, it has no effect. Therefore, for a random access response in a contention-based random access process, the foregoing first indication information may be a CSI request (CSI request) field in the random access response.
  • first indication information may also be other fields or newly added fields in the random access response, which is not limited in the embodiment of the present application.
  • the number of bits of the first indication information is an integer greater than or equal to 1.
  • the number of bits of the first indication information is an integer greater than or equal to 1 and less than or equal to 2.
  • Fig. 3 shows a schematic flow chart of reporting CSI in a contention-based random access process.
  • the terminal device can receive the first configuration information and the second configuration information sent by the network device through a multicast message or a broadcast message, so as to obtain the configuration information of the reference signal and the CSI report.
  • the terminal device can randomly select a random access preamble and send a random access request to the network device to request access to the cell where the network device is located. (I.e. step one in the aforementioned contention-based random access process)
  • the network device sends a random access response according to the random access request, and carries the first indication information in the random access response, so as to trigger the sending of the reference signal and/or the reporting of the CSI. (I.e. step 2 in the aforementioned contention-based random access process)
  • the network device sends a reference signal to the terminal device, and the terminal device receives the reference signal and obtains the CSI according to the reference signal.
  • the terminal device sends the PUSCH to the network device, and the PUSCH carries the aforementioned CSI, that is, the CSI is reported through the PUSCH. (I.e. step 3 in the aforementioned contention-based random access process)
  • the network device sends a contention resolution message to the terminal device. (I.e. step 4 in the aforementioned contention-based random access process)
  • the network device before the terminal device has completed the initial random access (that is, in the RRC connected state), the network device can configure the reference signal and CSI report through a multicast message or a broadcast message, and the initial access of the terminal device is completed Previously, the terminal device can report the CSI according to the configuration information of the multicast message or the broadcast message, and the first indication information carried in the random access response, so that the network device sends the PDSCH of the terminal device to the link for data transmission. Self-adaptation helps to improve the transmission efficiency of PDSCH before the initial access is completed, thereby improving system performance.
  • the embodiment of the present application adopts aperiodic CSI reporting, which can reduce the resource overhead for the network device to send the reference signal, and at the same time reduce the CSI reporting overhead for the terminal device as much as possible.
  • the method further includes: the terminal device receives first indication information from the network device, where the first indication information is used to trigger the sending of the reference signal and/or the For CSI reporting, the first indication information is carried in any of the following information:
  • the first indication information used to trigger the transmission of the reference signal and/or the reporting of the CSI carries downlink control information (DCI), and the DCI may be a downlink control used to schedule PUSCH.
  • DCI downlink control information
  • Information for example, DCI format 0_0
  • the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.
  • the relationship between the time domain resource of the reference signal and the time domain resource used to trigger the downlink control information of the reference signal can be defined in advance, so that the network equipment and the terminal equipment can be based on the time domain of the downlink control information.
  • Resources determine the time domain resources of the reference signal.
  • the time domain resource may be a subframe, a time slot, or a symbol (for example, an orthogonal frequency division multiplexing (OFDM) symbol), etc., which is not limited in the embodiment of the present application.
  • the above-mentioned time domain resource is a time slot.
  • the time-frequency resource occupied in the time slot is a fixed mapping pattern.
  • the frequency domain bandwidth of the reference signal and the frequency domain The mapping pattern (for example, each physical resource block) is predefined.
  • the transmission time slot of the reference signal (for example, the starting time slot number of the reference signal transmission) may have a certain binding relationship with the time slot that triggers the downlink control information of the reference signal.
  • the time slot deviation between the initial transmission time slot of the reference signal and the initial transmission time slot of the downlink control information that triggers the reference signal may be predefined, so that the terminal equipment can be based on the predefined time slot deviation and downlink control
  • the initial transmission time slot of the information can determine the initial transmission time slot of the reference signal, that is, the initial transmission time slot of the reference signal does not require the network device to notify the terminal device through explicit signaling.
  • the time slot deviation between the initial transmission time slot of the reference signal and the initial transmission time slot of the downlink control information that triggers the reference signal is 0, that is, the initial transmission time slot of the reference signal and the trigger
  • the initial transmission time slot of the downlink control information of the reference signal is the same time slot.
  • the initial transmission time slot of the reference signal is the x-th time slot after the initial transmission time slot of the downlink control information triggering the reference signal, and x is an integer greater than or equal to 1.
  • the configuration of CSI reporting is similar.
  • the network device can only support Type 1 broadband CSI reporting by default CSI reporting.
  • the definition of Type 1 broadband CSI reporting is the same as that of the third-generation partnership project (the The CSI reporting method defined in the 3rd generation partnership project, 3GPP) release 15 (release 15) is the same, and the type 1 means that the PMI type in the CSI report is type 1.
  • the embodiment of the present application also provides another communication method 400, as shown in FIG. 4.
  • the method 400 can be applied to the communication system 100 shown in FIG. 1, but the embodiment of the present application is not limited thereto.
  • the terminal device sends a random access request to the network device, where the random access request is used to request access to the cell where the network device is located; correspondingly, the network device receives the random access request.
  • the network device sends a random access response to the terminal device, and correspondingly, the terminal device receives the random access response.
  • the random access response is a random access response in a contention-based random access process.
  • the access response carries first indication information, and the first indication information is used to trigger the transmission of the reference signal and/or the reporting of the channel state information CSI.
  • the terminal device may receive the reference signal sent by the network device according to the trigger of the first indication information, obtain the CSI according to the reference signal, and report the CSI.
  • the sending of the reference signal and/or the reporting of the CSI is triggered by the first indication information in the random access response.
  • the terminal device may CSI is reported, and the PDSCH sent by the network device to the terminal device can use the CSI to perform link adaptation for data transmission, which is beneficial to improve the transmission efficiency of the PDSCH before the initial access is completed, thereby improving system performance.
  • the method of the embodiment of the present application is beneficial to improve the transmission efficiency of PDSCH carrying RRC signaling, thereby helping terminal devices and network devices to quickly Perform actual data service transmission.
  • the method further includes: the network device sends the first configuration information and the second configuration information through a first message, and correspondingly, the terminal device receives the first configuration through the first message.
  • Information and second configuration information 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 CSI reporting;
  • the network device sends a reference signal, and the terminal device receives the reference signal from the network device according to the first configuration information, and obtains the CSI according to the reference signal;
  • the method further includes:
  • the terminal device reports the aforementioned CSI to the network device according to the second configuration information and the first indication information.
  • the first configuration information includes a type of the reference signal
  • the type of the reference signal includes a non-zero power reference signal and a zero power reference signal, wherein the non-zero power reference signal uses For the measurement channel, the zero-power reference signal is used to measure interference.
  • the second configuration information includes the reported content of the CSI
  • the reported content of the CSI includes at least one of the following: channel quality indicator CQI, rank indicator RI, precoding matrix indicator PMI, reference Signal resource index.
  • the first message is a system message or a paging message.
  • Fig. 5 shows an apparatus 500 provided by an embodiment of the present application.
  • the device 500 may be a terminal device, or a device capable of supporting the terminal device to realize its functions, for example, a chip or a chip system that can be used in the terminal device.
  • the device 500 includes: a receiving unit 510, a processing unit 520, and a sending unit 530.
  • the receiving unit 510 is configured to: receive first configuration information and second configuration information from the network device through a first message, where the first message is a multicast message or a broadcast message, and the first configuration information is used for configuration Reference signal, where the second configuration information is used to configure the reporting of channel state information CSI; and, according to the first configuration information, receiving a reference signal from the network device;
  • the processing unit 520 is configured to: obtain CSI according to the reference signal;
  • the sending unit 530 is configured to report the CSI to the network device according to the second configuration information.
  • the receiving unit 510 is further configured to: receive 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 the reference signal And/or the CSI report.
  • the random access response is a random access response in a contention-based random access process.
  • the receiving unit 510 is further configured to: receive first indication information from the network device, where the first indication information is used to trigger the transmission of the reference signal and/or the reporting of the CSI, so
  • the first indication information is carried in any of the following information: downlink control information used to schedule the physical uplink shared channel PUSCH; or, downlink control information corresponding to a random access response; or, downlink control information corresponding to a system message; or , The downlink control information corresponding to the paging message.
  • the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.
  • 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, wherein the non-zero power reference signal is used to measure a channel, The zero power reference signal is used to measure interference.
  • the second configuration information includes the reported content of the CSI
  • the reported content of the CSI includes at least one of the following: channel quality indicator CQI, rank indicator RI, precoding matrix indicator PMI, and reference signal resource index.
  • the first message is a system message or a paging message.
  • the device 500 here is embodied in the form of a functional unit.
  • the term "unit” here can refer to application specific integrated circuit (application specific integrated circuit, ASIC), electronic circuit, processor for executing one or more software or firmware programs (such as shared processor, proprietary processor or group Processor, etc.) and memory, merge logic circuits and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • the apparatus 500 may be specifically the terminal device in the foregoing embodiment, and the apparatus 500 may be used to execute each process and/or step corresponding to the terminal device in the foregoing method embodiment. To avoid repetition, I won’t repeat them here.
  • Fig. 6 shows another apparatus 600 provided by an embodiment of the present application.
  • the device 600 may be a network device, or a device capable of supporting the network device to realize its functions, for example, a chip or a chip system that can be used in a network device.
  • the device 600 includes a sending unit 610 and a receiving unit 620.
  • the sending unit 610 is 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, and the first configuration information is used to configure a reference signal.
  • the second configuration information is used to configure the reporting of channel state information CSI; and, according to the first configuration information, send the reference signal;
  • the receiving unit 620 is configured to receive the CSI reported by the terminal device according to the second configuration information.
  • the sending unit 610 is further configured to: before sending the reference signal according to the first configuration information, send a random access response to the terminal device, where the random access response carries a first indication Information, the first indication information is used to trigger transmission of the reference signal and/or reporting of the CSI.
  • the random access response is a random access response in a contention-based random access process.
  • the sending unit 610 is further configured to send first indication information before sending the reference signal according to the first configuration information, where the first indication information is used to trigger the sending of the reference signal And/or the CSI report, the first indication information is carried in any of the following information: downlink control information for scheduling the physical uplink shared channel PUSCH; or, downlink control information corresponding to the random access response; or , The downlink control information corresponding to the system message; or, the downlink control information corresponding to the paging message.
  • the time domain resource of the reference signal is determined according to the time domain resource of the downlink control information.
  • 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, wherein the non-zero power reference signal is used to measure a channel, The zero power reference signal is used to measure interference.
  • the second configuration information includes the reported content of the CSI
  • the reported content of the CSI includes at least one of the following: channel quality indicator CQI, rank indicator RI, precoding matrix indicator PMI, and reference signal resource index.
  • the first message is a system message or a paging message.
  • the device 600 here is embodied in the form of a functional unit.
  • the term "unit” here can refer to application specific integrated circuit (application specific integrated circuit, ASIC), electronic circuit, processor for executing one or more software or firmware programs (such as shared processor, proprietary processor or group Processor, etc.) and memory, merge logic circuits and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • the apparatus 600 may be specifically the network device in the above-mentioned embodiment, and the apparatus 600 may be used to execute each process and/or step corresponding to the network device in the above-mentioned method embodiment. To avoid repetition, I won’t repeat them here.
  • the apparatus 500 of each of the foregoing solutions has the function of implementing the corresponding steps performed by the terminal device in the foregoing method; the apparatus 600 has the function of implementing the corresponding steps performed by the network device in the foregoing method.
  • the function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the sending unit and the receiving unit can be replaced by a communication interface, and other units, such as a processing unit, can be replaced by a processor to execute the respective method embodiments. Send and receive operations and related processing operations.
  • the communication interface may be a circuit, module, bus, bus interface, transceiver, and other devices that can implement communication functions.
  • the devices in FIG. 5 and FIG. 6 may also be a chip or a chip system, such as a system on chip (system on chip, SoC).
  • the receiving unit and the sending unit may be the transceiver circuit of the chip, which is not limited here.
  • FIG. 7 shows another apparatus 700 provided by an embodiment of the present application.
  • the device 700 includes a processor 710 and a transceiver 720.
  • the device 700 may further include a memory 750.
  • the memory 750 may be included in the processor 710.
  • the processor 710, the transceiver 720, and the memory 750 communicate with each other through an internal connection path.
  • the memory 750 is used to store instructions, and the processor 710 is used to execute instructions stored in the memory 750 to implement the method provided in the embodiments of the present application.
  • the apparatus 700 is used to execute each process and step corresponding to the terminal device in the method provided in the embodiment of the present application.
  • the transceiver 720 is configured to: receive first configuration information and second configuration information from the network device through a first message, the first message is a multicast message or a broadcast message, and the first configuration information is used for configuration reference Signal, the second configuration information is used to configure the reporting of channel state information CSI; and, according to the first configuration information, a reference signal from the network device is received; the processor 710 is used to: according to the reference signal, Obtain CSI; The transceiver 720 is further configured to: report the CSI to the network device according to the second configuration information.
  • the apparatus 700 is configured to execute each process and step corresponding to the network device in the method provided in the embodiment of the present application.
  • the transceiver 720 is 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, and the first configuration information is used to configure a reference signal.
  • the second configuration information is used to configure the reporting of channel state information CSI; send the reference signal according to the first configuration information; and receive the CSI reported by the terminal device according to the second configuration information.
  • the apparatus 700 may be specifically a terminal device or a network device in the foregoing embodiment, and may be used to execute various steps and/or processes corresponding to the terminal device or the network device in the foregoing method embodiment.
  • the memory 750 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A part of the memory may also include a non-volatile random access memory.
  • the memory can also store device type information.
  • the processor 710 may be configured to execute instructions stored in the memory, and when the processor 710 executes the instructions stored in the memory, the processor 710 is configured to execute the steps and/or steps of the above-mentioned method embodiment corresponding to the terminal device or the network device. Or process.
  • the processor of the above-mentioned device may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), or application-specific integrated circuits. (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software units in the processor.
  • the software unit may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor executes the instructions in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • serial link DRAM SLDRAM
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, causes the computer to execute any of the above embodiments method.
  • the present application also provides a computer-readable medium that stores program code, and when the program code runs on a computer, the computer executes the steps shown in FIGS. 2 to 4 The method of any one of the embodiments is shown.
  • the present application also provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • And/or describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects are in an “or” relationship.
  • "The following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a).
  • At least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c or a-b-c, where a, b, and c can be single or multiple.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present application.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented by software, it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, network equipment, user equipment, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, SSD).

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Abstract

本申请提供了一种上报信道状态信息的方法和装置，有利于在终端设备与网络设备建立连接之前，提高网络设备向终端设备发送的物理下行共享信道PDSCH的传输效率。该方法包括：网络设备通过第一消息向终端设备发送第一配置信息和第二配置信息，该第一消息为组播消息或广播消息，该第一配置信息用于配置参考信号，该第二配置信息用于配置信道状态信息CSI的上报；终端设备接收该第一配置信息和第二配置信息，并根据该第一配置信息，接收网络设备发送的参考信号，根据该参考信号获得CSI，并向该网络设备上报该CSI。

Description

上报信道状态信息的方法和装置
本申请要求于2019年7月31日提交中国专利局、申请号为201910701975.X、申请名称为“上报信道状态信息的方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，特别涉及通信领域中一种上报信道状态信息的方法和装置。
背景技术
为了提高系统性能，现有的通信系统常采用多输入多输出(multiple input multiple output，MIMO)技术发送数据。此时，发送端需要知道准确的信道状态信息(channel state information，CSI)。准确的CSI能够使发送端对待发送的数据进行合适的数据处理，如进行预编码、决定调制编码方案等，从而提高数据传输效率，提升系统性能。一般情况下，终端设备可以对网络设备发送的参考信号进行测量，获得CSI，并将CSI反馈给该网络设备，用于网络设备进行后续数据传输的链路自适应。
但是，CSI的配置信息是由专用无线资源控制(radio resource control，RRC)信令配置的，而终端设备在完成初始随机接入流程之后进入RRC连接态，才能够通过专用RRC信令配置，并且上述配置需要一定的时间生效。因此，通过专用RRC信令配置终端设备的CSI上报仅适用于处于RRC连接态的终端设备。
目前亟需提供一种方法，对于与网络设备之间没有建立连接的终端设备(例如，处于RRC连接态之前的终端设备，或者初始接入完成之前的终端设备)而言，提高终端设备与网络设备之间的物理下行共享信道(physical downlink shared channel，PDSCH)的传输效率。
发明内容
本申请提供一种测量信道状态信息的方法和装置，有利于在终端设备与网络设备建立连接之前，提高网络设备向终端设备发送的PDSCH的传输效率，从而提高系统性能。
第一方面，提供了一种上报信道状态信息的方法，包括：终端设备通过第一消息接收来自网络设备的第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息用于配置信道状态信息CSI的上报；所述终端设备根据所述第一配置信息，接收来自所述网络设备的参考信号，并根据所述参考信号，获得CSI；所述终端设备根据所述第二配置信息，向所述网络设备上报所述CSI。
在本申请实施例中，第一消息是组播消息或广播消息，即第一配置信息和第二配置信息是通过组播消息或广播消息发送的，无需使用专用RRC信令，这样，对于与网络设备 之间没有建立连接的终端设备(例如，初始接入完成之前的终端设备，或者处于RRC连接态之前的终端设备)而言，可以通过组播消息或广播消息配置参考信号和CSI的上报，使得在初始接入完成之前，终端设备根据组播消息或广播消息的配置信息上报CSI，网络设备发送给终端设备的PDSCH可以利用该CSI进行数据传输的链路自适应，有利于提高初始接入完成之前的PDSCH的传输效率，进而提高系统性能。
此外，对于高速移动、需要频繁进行RRC重建和初始接入的终端设备而言，本申请实施例的方法有利于提高携带RRC信令的PDSCH的传输效率，进而有助于终端设备与网络设备快速进行实际的数据业务传输。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：所述终端设备接收来自所述网络设备的随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报。
由于CSI的上报分为周期性上报和非周期性上报，为了降低网络设备发送参考信号的资源开销，同时尽可能降低终端设备对CSI的上报开销，网络设备发送参考信号和/或终端设备上报CSI，可以采用非周期的方式，即根据需求触发的。
结合第一方面，在第一方面的某些实现方式中，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应。
应理解，对于基于非竞争的随机接入而言，随机接入响应中的CSI请求(CSI request)字段用于决定在对应的PUSCH传输中是否包含非周期性的CSI上报。而对于基于竞争的随机接入而言，随机接入响应中的CSI request字段是预留的，即没有任何作用。因此，对于基于竞争的随机接入过程中的随机接入响应而言，上述第一指示信息可以为随机接入响应中的CSI request字段。
还应理解，上述第一指示信息也可以为随机接入响应中的其他字段或新增字段，本申请实施例对此不作限定。
可选地，上述第一指示信息的比特数为大于或等于1的整数。为了节省信令开销，该第一指示信息的比特数为大于或等于1、且小于或等于2的整数。
结合第一方面，在第一方面的某些实现方式中，所述方法还包括：所述终端设备接收来自所述网络设备的第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报，所述第一指示信息携带在下列任一种信息中：用于调度物理上行共享信道PUSCH的下行控制信息；或，随机接入响应对应的下行控制信息；或，系统消息对应的下行控制信息；或，寻呼消息对应的下行控制信息。
在本申请实施例中，上述用于触发参考信号的发送和/或CSI的上报的第一指示信息携带下行控制信息(downlink control information，DCI)中，该DCI可以是用于调度PUSCH的下行控制信息(例如DCI格式0_0)，或者随机接入响应对应的DCI，或者系统消息对应的DCI，或者寻呼消息对应的DCI，本申请实施例对此不作限定。
结合第一方面，在第一方面的某些实现方式中，所述参考信号的时域资源是根据所述下行控制信息的时域资源确定的。
为了进一步节省信令开销，可以预先定义参考信号的时域资源和用于触发该参考信号的下行控制信息的时域资源之间的关系，以便网络设备和终端设备根据该下行控制信息的时域资源，确定参考信号的时域资源。该时域资源可以是子帧、时隙、或者符号(例如正 交频分复用(orthogonal frequency division multiplexing，OFDM)符号)等，本申请实施例对此不作限定。
结合第一方面，在第一方面的某些实现方式中，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
结合第一方面，在第一方面的某些实现方式中，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
结合第一方面，在第一方面的某些实现方式中，所述第一消息为系统消息或寻呼消息。
示例性地，上述第一消息可以为系统消息、随机接入响应消息、或者寻呼消息中的任一个，本申请实施例对此不作限定。在一种可能的实现方式中，该第一消息为最小剩余系统信息(remaining minimum system information，RMSI)，也称为系统信息块1(system information block 1，SIB 1)，或者其他系统信息(other system information，OSI)。
第二方面，提供了另一种测量信道状态信息的方法，包括：网络设备通过第一消息发送第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息用于配置信道状态信息CSI的上报；所述网络设备根据所述第一配置信息，发送所述参考信号；所述网络设备接收终端设备根据所述第二配置信息上报的CSI。
结合第二方面，在第二方面的某些实现方式中，在所述网络设备根据所述第一配置信息，发送所述参考信号之前，所述方法还包括：所述网络设备向所述终端设备发送随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报。
结合第二方面，在第二方面的某些实现方式中，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应。
结合第二方面，在第二方面的某些实现方式中，在所述网络设备根据所述第一配置信息，发送所述参考信号之前，所述方法还包括：所述网络设备发送第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报，所述第一指示信息携带在下列任一种信息中：用于调度物理上行共享信道PUSCH的下行控制信息；或，随机接入响应对应的下行控制信息；或，系统消息对应的下行控制信息；或，寻呼消息对应的下行控制信息。
结合第二方面，在第二方面的某些实现方式中，所述参考信号的时域资源是根据所述下行控制信息的时域资源确定的。
结合第二方面，在第二方面的某些实现方式中，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
结合第二方面，在第二方面的某些实现方式中，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
结合第二方面，在第二方面的某些实现方式中，所述第一消息为系统消息或寻呼消息。
第三方面，提供了一种通信方法，包括：终端设备向网络设备发送随机接入请求，所述随机接入请求用于请求接入所述网络设备所在的小区；所述终端设备接收来自所述网络设备的随机接入响应，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发参考信号的发送和/或信道状态信息CSI的上报。
结合第三方面，在第三方面的某些实现方式中，所述方法还包括：所述终端设备通过第一消息接收来自所述网络设备的第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置所述参考信号，所述第二配置信息用于配置所述CSI的上报；所述终端设备根据所述第一配置信息，接收来自所述网络设备的所述参考信号，并根据所述参考信号，获得所述CSI；在所述终端设备接收来自所述网络设备的随机接入响应之后，所述方法还包括：所述终端设备根据所述第二配置信息和所述第一指示信息，向所述网络设备上报所述CSI。
结合第三方面，在第三方面的某些实现方式中，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
结合第三方面，在第三方面的某些实现方式中，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
结合第三方面，在第三方面的某些实现方式中，所述第一消息为系统消息或寻呼消息。
第四方面，提供了另一种通信方法，包括：网络设备接收来自终端设备的随机接入请求，所述随机接入请求用于请求接入所述网络设备所在的小区；所述网络设备向所述终端设备发送随机接入响应，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发参考信号的发送和/或信道状态信息CSI的上报。
结合第四方面，在第四方面的某些实现方式中，所述方法还包括：所述网络设备通过第一消息向所述终端设备发送第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置所述参考信号，所述第二配置信息用于配置所述CSI的上报；在所述网络设备向所述终端设备发送随机接入响应之后，所述方法还包括：所述网络设备根据所述第一配置信息和所述第一指示信息，向所述终端设备发送所述参考信号；所述网络设备根据所述第二配置信息，接收所述终端设备根据所述参考信号和所述第二配置信息上报的所述CSI。
结合第四方面，在第四方面的某些实现方式中，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
结合第四方面，在第四方面的某些实现方式中，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
结合第四方面，在第四方面的某些实现方式中，所述第一消息为系统消息或寻呼消息。
第五方面，提供了一种装置，用于执行上述各个方面或各个方面任意可能的实现方式 中的方法。具体地，该装置包括用于执行上述各个方面或各个方面任意可能的实现方式中的方法的单元。
在一种设计中，该装置可以包括执行上述各个方面中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。
在另一种设计中，该装置为通信芯片，通信芯片可以包括用于发送信息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。
在另一种设计中，该装置为通信设备，通信设备可以包括用于发送信息或数据的发射机，以及用于接收信息或数据的接收机。
在另一种设计中，该装置用于执行上述各个方面或各个方面中任意可能的实现方式中的方法，该装置可以配置在上述终端设备或网络设备中，或者该装置本身即为上述终端设备或网络设备。
第六方面，提供了另一种装置，包括，处理器，存储器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该装置执行上述任一方面中任一种可能实现方式中的方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
可选地，该通信设备还包括，发射机(发射器)和接收机(接收器)，发射机和接收机可以分离设置，也可以集成在一起，称为收发机(收发器)。
第七方面，提供了一种通信系统，包括用于实现上述第一方面或第一方面的任一种可能实现的方法的装置，以及用于实现上述第二方面或第二方面的任一种可能实现的方法的装置；或者，
用于实现上述第三方面或第三方面的任一种可能实现的方法的装置，以及用于实现上述第四方面或第四方面的任一种可能实现的方法的装置。
在一个可能的设计中，该通信系统还可以包括本申请实施例所提供的方案中与终端设备和/或网络设备进行交互的其他设备。
第八方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述任一方面中任一种可能实现方式中的方法。
第九方面，提供了一种计算机可读介质，所述计算机可读介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述任一方面中任一种可能实现方式中的方法。
第十方面，提供了一种芯片系统，包括存储器和处理器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得安装有该芯片系统的通信设备执行上述各个方面中任一种可能实现方式中的方法。
其中，该芯片系统可以包括用于发送信息或数据的输入电路或者接口，以及用于接收信息或数据的输出电路或者接口。
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图1是本申请实施例提供的通信系统的示意性结构图。
图2是本申请实施例提供的上报信道状态信息的方法的示意性流程图。
图3是本申请实施例提供的另一上报信道状态信息的方法的示意性流程图。
图4是本申请实施例提供的通信方法的示意性流程图。
图5是本申请实施例提供的装置的示意性框图。
图6是本申请实施例提供的另一装置的示意性框图。
图7是本申请实施例提供的另一装置的示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、第五代(5th generation，5G)系统或新无线(new radio，NR)或者其他演进的通信系统等。
本申请实施例中的终端设备也可以称为：用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。
终端设备可以是一种向用户提供语音/数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。目前，一些终端的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体 征监测的智能手环、智能首饰等。
此外，在本申请实施例中，终端设备还可以是物联网(internet of things，IoT)系统中的终端设备，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。
另外，本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备也可以称为接入网设备或无线接入网设备，可以是传输接收点(transmission reception point，TRP)，还可以是LTE系统中的演进型基站(evolved NodeB，eNB或eNodeB)，还可以是家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，可以是WLAN中的接入点(access point，AP),可以是新型无线系统(new radio，NR)系统中的gNB，本申请实施例并不限定。
在一种网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点、或分布单元(distributed unit，DU)节点、或包括CU节点和DU节点的RAN设备、或者控制面CU节点(CU-CP节点)和用户面CU节点(CU-UP节点)以及DU节点的RAN设备。
网络设备为小区提供服务，终端设备通过网络设备分配的传输资源(例如，频域资源，或者说，频谱资源)与小区进行通信，该小区可以属于宏基站(例如，宏eNB或宏gNB等)，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、毫微微小区(femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
在本申请实施例中，终端设备或网络设备包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
另外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
为便于理解本申请实施例，首先结合图1对适用于本申请实施例的通信系统进行详细说明。
图1示出了本申请实施例应用的通信系统100。该通信系统100可以包括至少一个网络设备110。网络设备110可以是与终端设备通信的设备，每个网络设备110可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域(小区)内的终端设备(例如UE)进行通信。该通信系统100还包括位于网络设备110覆盖范围内的多个终端设备120。该终端设备120可以是移动的或固定的。
图1示例性地示出了一个网络设备和两个终端设备，可选地，该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
可选地，该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例不限于此。
为便于理解，下面先对本申请所涉及的术语进行简单介绍。
1、随机接入
随机接入过程是指从网络设备发送随机接入前导码开始，尝试接入网络到与网络间建立起基本的信令连接之前的过程。应理解，随机接入是在空闲模式或连接模式下发起的，主要是取得与网络设备之间的上行同步和申请上行资源。随机接入主要应用于无线资源控制连接建立之前的初始接入期间和RRC连接重建立期间。
随机接入分为基于竞争的随机接入和基于非竞争的随机接入。对于基于非竞争的随机接入过程，终端设备可以采用网络设备为自身分配的随机接入码发起随机接入，这种类型的随机接入包括终端设备发送随机接入请求和网络设备发送随机接入响应两个步骤。对于基于竞争的随机接入过程，终端设备可以随机选择随机接入前导码发起随机接入，由于随机接入前导码可以在一个资源池中供多个不同的终端设备选择，就会导致资源竞争的问题。在这种情况下，网络设备需要向终端设备发送竞争解决消息。因此，基于竞争的随机接入过程包括下列四个步骤：
步骤一、终端设备随机选择一个随机接入前导码，在物理随机接入信道(physical random access channel)上发送随机接入请求；
步骤二、网络设备检测到携带随机接入前导码的随机接入请求，进而发送随机接入响应，该随机接入响应中可以包括该网络设备接收到的随机接入前导码的编号、该网络设备接收到的随机接入前导码的时间调整量、以及用于指示该网络设备为该终端设备分配的上行资源位置的信息；
步骤三、终端设备接收网络设备发送的随机接入响应，在该随机接入响应指示的上行资源上发送上行消息(即物理上行共享信道(physical uplink shared channel，PUSCH))，该上行消息中可以包括该终端设备的唯一标识(例如临时移动用户识别码(temporary mobile subscriber identity，TMSI))或对应的随机接入标识；
步骤四、网络设备接收上述终端设备发送的上行消息，并向接入成功的终端设备发送竞争解决消息，该竞争解决消息中可以包括接入成功的终端设备的唯一ID(例如TMSI)或对应的随机接入标识。
应理解，上述终端设备可以是一个或多个，在多个终端设备同时选择同一随机接入前 导码进行随机接入时，就会导致竞争，这时就需要网络设备通过上述步骤四进行竞争解决。
2、CSI
CSI通常包括预编码向量指示(precoding matrix indicator，PMI)、信道质量指示(channel quality indicator，CQI)和秩指示(rank indicator，RI)。其中，PMI用于指示预编码矩阵，网络设备可以根据PMI选择用于对数据进行预编码的预编码矩阵；CQI指示信道质量，用于网络设备对确定调制编码方案提供参考；RI指示网络设备可以同时对终端传输的数据层数，RI越大，表示同时传送的数据层数越多。PMI的选择往往与网络设备和终端之间的信道矩阵相关，PMI代表的预编矩阵与信道矩阵的匹配程度越高，网络设备根据该PMI选择预编码矩阵对数据进行预编码，能更好的抑制多用户干扰。
一般情况下，终端设备可以对网络设备发送的参考信号进行测量，获得CSI，并将CSI反馈给该网络设备，用于网络设备进行后续数据传输的链路自适应。其中，参考信号例如可以包括信道状态信息参考信号(channel state information reference signal，CSI-RS)。与此对应地，参考信号资源例如可以包括CSI-RS资源(CSI-RS resource)。为了区分不同的参考信号资源，每个参考信号资源可对应于一个参考信号资源的索引，例如，CSI-RS资源可以通过CSI-RS索引(如CSI-RS index)来区分。
应理解，上文中列举的参考信号以及相应的参考信号资源仅为示例性说明，不应对本申请构成任何限定，本申请并不排除在未来的协议中定义其他参考信号来实现相同或相似功能的可能。
CSI的配置信息是由专用无线资源控制(radio resource control，RRC)信令配置的，而终端设备在完成初始随机接入流程之后进入RRC连接态，才能够通过专用RRC信令配置，并且上述配置需要一定的时间生效。因此，通过专用RRC信令配置终端设备的CSI上报仅适用于处于RRC连接态的终端设备。
有鉴于此，本申请提供了一种方法，对于与网络设备之间没有建立连接的终端设备(例如，处于RRC连接态之前的终端设备，或者初始接入完成之前的终端设备)而言，有利于提高终端设备与网络设备之间的物理下行共享信道(physical downlink shared channel，PDSCH)的传输效率。
为了便于理解本申请实施例，做出以下几点说明。
1、在本申请实施例中，“用于指示”可以包括用于直接指示和用于间接指示，也可以包括显式指示和隐式指示。将某一信息所指示的信息称为待指示信息，则具体实现过程中，对待指示信息进行指示的方式有很多种，例如但不限于，可以直接指示待指示信息，如待指示信息本身或者该待指示信息的索引等。也可以通过指示其他信息来间接指示待指示信息，其中该其他信息与待指示信息之间存在关联关系。还可以仅仅指示待指示信息的一部分，而待指示信息的其他部分则是已知的或者提前约定的。例如，还可以借助预先约定(例如协议规定)是否存在某个信元来实现对待指示信息的指示，从而在一定程度上降低指示开销。
2、在下文示出的实施例中第一、第二、第三以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围。例如，区分不同的信息、区分不同的门限值等。
3、在下文示出的实施例中，“预先定义”可以是协议定义。其中，“预先定义”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可 用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。
4、本申请实施例中涉及的“协议”可以是指通信领域的标准协议，例如可以包括长期演进(long term evolution，LTE)协议、新无线(new radio，NR)协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
下面将详细说明本申请提供的各个实施例。
本申请实施例以终端设备和网络设备为例进行描述，应理解，终端设备可以替换为能够实现与终端设备类似的功能的装置或芯片，网络设备也可以替换为能够实现与网络设备类似的功能的装置或芯片，本申请实施例对其名称不作限定。
图2示出了本申请实施例的上报信道状态信息的方法200的示意性流程图。该方法200可以应用于图1所示的通信系统100，但本申请实施例不限于此。
S210，网络设备通过第一消息发送第一配置信息和第二配置信息，该第一消息为组播消息或广播消息，该第一配置信息用于配置参考信号，该第二配置信息用于配置CSI的上报；则对应地，终端设备可以通过该第一消息接收到上述第一配置信息和第二配置信息。
S220，该网络设备按照第一配置信息发送参考信号。
S230，该终端设备根据上述第一配置信息，接收来自网络设备的参考信号，并根据该参考信号，获得CSI。
S240，该终端设备根据上述第二配置信息，向网络设备上报该CSI；则对应地，网络设备接收该CSI。
在本申请实施例中，第一消息是组播消息或广播消息，即第一配置信息和第二配置信息是通过组播消息或广播消息发送的，无需使用专用RRC信令，这样，对于与网络设备之间没有建立连接的终端设备(例如，初始接入完成之前的终端设备，或者处于RRC连接态之前的终端设备)而言，可以通过组播消息或广播消息配置参考信号和CSI的上报，使得在初始接入完成之前，终端设备根据组播消息或广播消息的配置信息上报CSI，网络设备发送给终端设备的PDSCH可以利用该CSI进行数据传输的链路自适应，有利于提高初始接入完成之前的PDSCH的传输效率，进而提高系统性能。
此外，对于高速移动、需要频繁进行RRC重建和初始接入的终端设备而言，本申请实施例的方法有利于提高携带RRC信令的PDSCH的传输效率，进而有助于终端设备与网络设备快速进行实际的数据业务传输。
上述“上报CSI”即为终端设备向网络设备发送CSI。由于第一消息是组播消息或广播消息，本申请实施例中的终端设备指的是在网络设备的覆盖范围内，能够接收到该网络设备组播消息或广播消息的任一终端设备。换句话说，该网络设备覆盖范围内的所有终端设备可以基于相同的第一配置信息和相同的第二配置信息上报CSI。
示例性地，上述第一消息可以为系统消息、随机接入响应消息、或者寻呼消息中的任一个，本申请实施例对此不作限定。在一种可能的实现方式中，该第一消息为最小剩余系统信息(remaining minimum system information，RMSI)，也称为系统信息块1(system information block 1，SIB 1)，或者其他系统信息(other system information，OSI)。
应理解，上述第一消息可以是一个消息，也可以是两个消息，本申请实施例对此不作限定。换句话说，第一配置信息和第二配置信息可以携带在同一消息中，也可以携带在两个不同的消息中。在第一配置信息和第二配置信息携带在同一消息中时，该第一配置信息 和第二配置信息可以位于该同一消息中的两个不同字段。
上述“第一配置信息用于配置参考信号”是指：该第一配置信息可以配置发送参考信号所采用的参考信号资源(例如时域资源、频段资源、空域资源等等)和/或所发送的参考信号的类型。作为一个可选的实施例，该第一配置信息包括参考信号的类型。该参考信号的类型包括非零功率参考信号和零功率参考信号，其中，非零功率参考信号用于测量信道，零功率参考信号用于测量干扰。这里的干扰指的是小区间干扰。
上述“第二配置信息用于配置CSI的上报”是指：该第二配置信息用于配置CSI上报的资源(例如时域资源、频域资源、空域资源等等)和/或CSI的内容。作为一个可选的实施例，上述第二配置信息包括CSI的上报内容，该CSI的上报内容可以包括下列至少一种：信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
示例性地，上述CSI的上报内容可以为仅上报CQI，这种上报方式可以最小化终端设备的CSI上报开销；或者，上述CSI的上报内容可以为上报RI和CQI，这种上报方式可以有效支持信道传输流的自适应；或者，上述CSI的上报内容可以为上报RI、PMI和CQI，这种上报方式可以最大化信号传输的性能；或者，上述CSI的上报内容可以为上报参考信号资源索引和CQI，这种上报方式可以有效支持多波束传输场景下最优波束的选择；或者，上述CSI的上报内容可以为上报参考信号资源索引和RI，这种上报方式可以支持多流和多波束的灵活自适应。应理解，除了上述列出的多种情况之外，CST的上报内容还可以为其他信息的组合，本申请实施例对此不作限定。
还应理解，上述“终端设备根据该参考信号，获得CSI”是指：该终端设备可以是对该第一配置信息所配置的参考信号进行信道测量，获得上述CSI，或者，该终端设备可以结合该第一配置信息所配置的参考信号以及其他参考信号进行信道测量，获得上述CSI，本申请实施例对此不作限定。
在本申请实施例中，第一配置消息和第二配置消息都是通过组播消息或广播消息发送的。但应理解，在本申请的其他可能的实现方式中，第一配置消息是通过组播消息或广播消息发送的，第二配置消息可以是预先定义的，或者，第一配置消息可以是预先定义的，第二配置消息是通过组播消息或广播消息发送的，或者，第一配置消息和/或第二配置消息中的部分内容是预先定义的。这样，能够降低网络设备发送第一配置消息和/或第二配置消息的信令开销。
由于CSI的上报分为周期性上报和非周期性上报，为了降低网络设备发送参考信号的资源开销，同时尽可能降低终端设备对CSI的上报开销，网络设备发送参考信号和/或终端设备上报CSI，可以采用非周期的方式，即根据需求触发的。
作为一个可选的实施例，所述方法还包括：终端设备接收来自网络设备的随机接入响应，该随机接入响应携带第一指示信息，该第一指示信息用于触发参考信号的发送和/或CSI的上报。
随机接入响应用于指示终端设备传输物理上行共享信道(physical uplink shared channel，PUSCH)的资源信息，上述第一指示信息携带在网络设备发送的随机接入响应中，即网络设备可以在终端设备进行初始随机接入的过程中触发参考信号的发送和/或CSI的上报。由于第一指示信息用于触发参考信号的发送和/或CSI的上报，因此，本申请实施例可以分下列三种情况：
情况1，第一指示信息仅触发参考信号的发送
在这种情况下，网络设备发送参考信号的方式是非周期的，而终端设备上报CSI的方式可以是周期的，也可以是在测量参考信号获得CSI之后立即上报该CSI，本申请实施例对此不作限定。本实施例能够将参考信号的触发和CSI上报的触发解耦，有利于增加信号传输的灵活度。
情况2，第一指示信息仅触发CSI的上报
在这种情况下，网络设备发送参考信号的方式可以是周期的，而终端设备上报CSI的方式可以是非周期的，例如，终端设备根据网络设备周期性发送的参考信号进行信道测量，在获得CSI之后并不立即上报该CSI，而是根据第一指示信息进行上报。本实施例能够将参考信号的触发和CSI上报的触发解耦，有利于增加信号传输的灵活度。
情况3，第一指示信息触发参考信号的发送和CSI的上报
在这种情况下，网络设备发送参考信号的方式是非周期的，终端设备上报CSI的方式也是非周期的。即网络设备需要根据第一指示信息的触发发送参考信号，终端设备根据第一指示信息的触发上报CSI。本实施例能够将参考信号的触发和CSI上报的触发绑定，用同一个信令进行指示，有利于降低信令设计的开销。
作为一个可选的实施例，上述随机接入响应为基于竞争的随机接入过程中的随机接入响应。
应理解，对于基于非竞争的随机接入而言，随机接入响应中的CSI request字段用于决定在对应的PUSCH传输中是否包含非周期性的CSI上报。而对于基于竞争的随机接入而言，随机接入响应中的CSI request字段是预留的，即没有任何作用。因此，对于基于竞争的随机接入过程中的随机接入响应而言，上述第一指示信息可以为随机接入响应中的CSI请求(CSI request)字段。
还应理解，上述第一指示信息也可以为随机接入响应中的其他字段或新增字段，本申请实施例对此不作限定。
可选地，上述第一指示信息的比特数为大于或等于1的整数。为了节省信令开销，该第一指示信息的比特数为大于或等于1、且小于或等于2的整数。
图3示出了在基于竞争的随机接入过程中上报CSI的示意性流程图。
在图3中，终端设备可以接收网络设备通过组播消息或广播消息发送的第一配置信息和第二配置信息，从而获取参考信号和CSI上报的配置情况。
在需要接入该网络设备所在小区时，该终端设备可以随机选择一个随机接入前导码，向网络设备发送随机接入请求，请求接入该网络设备所在的小区。(即上述基于竞争的随机接入过程中的步骤一)
网络设备根据该随机接入请求发送随机接入响应，并在该随机接入响应中携带第一指示信息，以便触发参考信号的发送和/或CSI的上报。(即上述基于竞争的随机接入过程中的步骤二)
网络设备向终端设备发送参考信号，该终端设备接收该参考信号，并根据该参考信号获得CSI。
终端设备向网络设备发送PUSCH，在该PUSCH中携带上述CSI，即通过PUSCH上报CSI。(即上述基于竞争的随机接入过程中的步骤三)
网络设备向终端设备发送竞争解决消息。(即上述基于竞争的随机接入过程中的步骤四)
在本申请实施例中，终端设备还未完成初始随机接入(即处于RRC连接态)之前，网络设备可以通过组播消息或广播消息配置参考信号和CSI的上报，在终端设备初始接入完成之前，该终端设备可以根据组播消息或广播消息的配置信息、以及随机接入响应中携带的第一指示信息上报CSI，使得网络设备发送终端设备的PDSCH可以利用该CSI进行数据传输的链路自适应，有利于提高初始接入完成之前的PDSCH的传输效率，进而提高系统性能。此外，本申请实施例采用非周期的CSI上报，能够降低网络设备发送参考信号的资源开销，同时尽可能降低终端设备对CSI的上报开销。
作为一个可选的实施例，所述方法还包括：所述终端设备接收来自所述网络设备的第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报，所述第一指示信息携带在下列任一种信息中：
用于调度物理上行共享信道PUSCH的下行控制信息；或，
随机接入响应对应的下行控制信息；或，
系统消息对应的下行控制信息；或，
寻呼消息对应的下行控制信息。
在本申请实施例中，上述用于触发参考信号的发送和/或CSI的上报的第一指示信息携带下行控制信息(downlink control information，DCI)中，该DCI可以是用于调度PUSCH的下行控制信息(例如DCI格式0_0)，或者随机接入响应对应的DCI，或者系统消息对应的DCI，或者寻呼消息对应的DCI，本申请实施例对此不作限定。
作为一个可选的实施例，所述参考信号的时域资源是根据所述下行控制信息的时域资源确定的。
为了进一步节省信令开销，可以预先定义参考信号的时域资源和用于触发该参考信号的下行控制信息的时域资源之间的关系，以便网络设备和终端设备根据该下行控制信息的时域资源，确定参考信号的时域资源。该时域资源可以是子帧、时隙、或者符号(例如正交频分复用(orthogonal frequency division multiplexing，OFDM)符号)等，本申请实施例对此不作限定。
示例性地，上述时域资源是时隙，假设参考信号的端口数默认为4端口，在时隙中占用的时频资源是固定的映射图样，其中，参考信号的频域带宽及在频域(例如每个物理资源块)上的映射图样是预定义好的。而参考信号的发送时隙(例如参考信号发送的起始时隙号)可以与触发该参考信号的下行控制信息的时隙有一定的绑定关系。例如，参考信号的起始发送时隙与触发该参考信号的下行控制信息的起始发送时隙之间的时隙偏差可以是预先定义的，从而终端设备根据预先定义的时隙偏差和下行控制信息的起始发送时隙，可以确定参考信号的起始发送时隙，即参考信号的起始发送时隙无需网络设备通过显式信令通知终端设备。示例性地，上述参考信号的起始发送时隙与触发该参考信号的下行控制信息的起始发送时隙之间的时隙偏差是0，即，参考信号的起始发送时隙与触发该参考信号的下行控制信息的起始发送时隙为同一个时隙。示例性地，上述参考信号的起始发送时隙为触发该参考信号的下行控制信息的起始发送时隙之后的第x个时隙，x为大于或等于1的整数。
作为一个可选的实施例，CSI上报的配置类似，网络设备可以默认CSI上报的方式仅支持类型1宽带CSI上报方式，这里，类型1宽带CSI上报方式的定义同第三代合作伙伴项目(the 3rd generation partnership project，3GPP)版本15(release 15)中定义的CSI上报方式相同，而该类型1指的是CSI上报中的PMI类型为类型1。
本申请实施例还提供了另一种通信方法400，如图4所示。该方法400可以应用于图1所示的通信系统100，但本申请实施例不限于此。
S410，终端设备向网络设备发送随机接入请求，该随机接入请求用于请求接入该网络设备所在的小区；则对应地，网络设备接收该随机接入请求。
S420，该网络设备向终端设备发送随机接入响应，则对应地，该终端设备接收该随机接入响应，该随机接入响应为基于竞争的随机接入过程中的随机接入响应，该随机接入响应携带第一指示信息，该第一指示信息用于触发参考信号的发送和/或信道状态信息CSI的上报。
进一步地，终端设备可以根据第一指示信息的触发，接收网络设备发送的参考信号，并根据该参考信号获得CSI，进行CSI的上报。
本申请实施例通信方法，在基于竞争的随机接入过程中，通过随机接入响应中的第一指示信息触发参考信号的发送和/或CSI的上报，在初始接入完成之前，终端设备可以上报CSI，网络设备发送给终端设备的PDSCH可以利用该CSI进行数据传输的链路自适应，有利于提高初始接入完成之前的PDSCH的传输效率，进而提高系统性能。
此外，对于高速移动、需要频繁进行RRC重建和初始接入的终端设备而言，本申请实施例的方法有利于提高携带RRC信令的PDSCH的传输效率，进而有助于终端设备与网络设备快速进行实际的数据业务传输。
在方法400的一种可能的实现方式中，所述方法还包括：网络设备通过第一消息发送第一配置信息和第二配置信息，则对应地，终端设备通过第一消息接收上述第一配置信息和第二配置信息，该第一消息为组播消息或广播消息，该第一配置信息用于配置参考信号，该第二配置信息用于配置CSI的上报；
网络设备发送参考信号，该终端设备根据该第一配置信息，接收来自网络设备的参考信号，并根据该参考信号，获得CSI；
在终端设备接收来自网络设备的随机接入响应之后，所述方法还包括：
该终端设备根据该第二配置信息和该第一指示信息，向网络设备上报上述CSI。
作为一个可选的实施例，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
作为一个可选的实施例，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
作为一个可选的实施例，所述第一消息为系统消息或寻呼消息。
方法400的各个步骤以及所传输的消息与上述方法200类似，均可以参考上述方法200中的描述，此处不再赘述。
应理解，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应 以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
上文中结合图1至图4，详细描述了根据本申请实施例的方法，下面将结合5至图7，详细描述根据本申请实施例的装置。
图5示出了本申请实施例提供的装置500。该装置500可以终端设备，也可以是能够支持终端设备实现其功能的装置，例如是可以用于终端设备中的芯片或芯片系统。该装置500包括：接收单元510、处理单元520和发送单元530。
其中，该接收单元510用于：通过第一消息接收来自网络设备的第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息用于配置信道状态信息CSI的上报；以及，根据所述第一配置信息，接收来自所述网络设备的参考信号；
该处理单元520用于：根据所述参考信号，获得CSI；
该发送单元530用于：根据所述第二配置信息，向所述网络设备上报所述CSI。
可选地，所述接收单元510还用于：接收来自所述网络设备的随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报。
可选地，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应。
可选地，所述接收单元510还用于：接收来自所述网络设备的第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报，所述第一指示信息携带在下列任一种信息中：用于调度物理上行共享信道PUSCH的下行控制信息；或，随机接入响应对应的下行控制信息；或，系统消息对应的下行控制信息；或，寻呼消息对应的下行控制信息。
可选地，所述参考信号的时域资源是根据所述下行控制信息的时域资源确定的。
可选地，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
可选地，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
可选地，所述第一消息为系统消息或寻呼消息。
应理解，这里的装置500以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，装置500可以具体为上述实施例中的终端设备，装置500可以用于执行上述方法实施例中与终端设备对应的各个流程和/或步骤，为避免重复，在此不再赘述。
图6示出了本申请实施例提供的另一装置600。该装置600可以网络设备，也可以是能够支持网络设备实现其功能的装置，例如是可以用于网络设备中的芯片或芯片系统。该装置600包括：发送单元610和接收单元620。
其中，发送单元610用于：通过第一消息发送第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息 用于配置信道状态信息CSI的上报；以及，根据所述第一配置信息，发送所述参考信号；
该接收单元620用于：接收终端设备根据所述第二配置信息上报的CSI。
可选地，所述发送单元610还用于：在根据所述第一配置信息，发送所述参考信号之前，向所述终端设备发送随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报。
可选地，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应。
可选地，所述发送单元610还用于：在根据所述第一配置信息，发送所述参考信号之前，发送第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报，所述第一指示信息携带在下列任一种信息中：用于调度物理上行共享信道PUSCH的下行控制信息；或，随机接入响应对应的下行控制信息；或，系统消息对应的下行控制信息；或，寻呼消息对应的下行控制信息。
可选地，所述参考信号的时域资源是根据所述下行控制信息的时域资源确定的。
可选地，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
可选地，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
可选地，所述第一消息为系统消息或寻呼消息。
应理解，这里的装置600以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，装置600可以具体为上述实施例中的网络设备，装置600可以用于执行上述方法实施例中与网络设备对应的各个流程和/或步骤，为避免重复，在此不再赘述。
上述各个方案的装置500具有实现上述方法中终端设备执行的相应步骤的功能；装置600具有实现上述方法中网络设备执行的相应步骤的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块；例如发送单元和接收单元可以由通信接口替代，其它单元，如处理单元等可以由处理器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。在本申请实施例中，通信接口可以是电路、模块、总线、总线接口、收发器等可以实现通信功能的装置。
在本申请的实施例，图5和图6中的装置也可以是芯片或者芯片系统，例如：片上系统(system on chip，SoC)。对应地，接收单元和发送单元可以是该芯片的收发电路，在此不做限定。
图7示出了本申请实施例提供的另一装置700。该装置700包括处理器710、收发器720。可选地，该装置700还可以包括存储器750。可选地，存储器750可以包括于处理器710中。其中，处理器710、收发器720和存储器750通过内部连接通路互相通信，存储器750用于存储指令，处理器710用于执行存储器750存储的指令，以实现本申请实施例提供的方法。
在一种可能的实现方式中，装置700用于执行本申请实施例提供的方法中终端设备对 应的各个流程和步骤。
其中，收发器720用于：通过第一消息接收来自网络设备的第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息用于配置信道状态信息CSI的上报；以及，根据所述第一配置信息，接收来自所述网络设备的参考信号；处理器710用于：根据所述参考信号，获得CSI；收发器720还用于：根据所述第二配置信息，向所述网络设备上报所述CSI。
在一种可能的实现方式中，装置700用于执行本申请实施例提供的方法中网络设备对应的各个流程和步骤。
其中，收发器720用于：通过第一消息发送第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息用于配置信道状态信息CSI的上报；根据所述第一配置信息，发送所述参考信号；以及，接收终端设备根据所述第二配置信息上报的CSI。。
应理解，装置700可以具体为上述实施例中的终端设备或网络设备，并且可以用于执行上述方法实施例中与终端设备或网络设备对应的各个步骤和/或流程。可选地，存储器750可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。处理器710可以用于执行存储器中存储的指令，并且当处理器710执行存储器中存储的指令时，处理器710用于执行上述与该终端设备或网络设备对应的方法实施例的各个步骤和/或流程。
应理解，在本申请实施例中，上述装置的处理器可以是中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件单元组合执行完成。软件单元可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器执行存储器中的指令，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器 (enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行上述任意一个实施例的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图2至图4所示实施例中任意一个实施例的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括前述的一个或多个终端设备以及一个或多个网络设备。
在本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A、B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a、b或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c或a-b-c，其中a，b，c可以是单个，也可以是多个。
本领域普通技术人员可以意识到，结合本文中所公开的实施例中描述的各方法步骤和单元，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域普通技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。在本申请实施例中，在无逻辑矛盾的前提下，各实施例之间可以相互引用，例如方法实施例之间的方法和/或术语可以相互引用，例如装置实施例之间的功能和/或术语可以相互引用，例如装置实施例和方法实施例之间的功能和/或术语可以相互引用。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本申请实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。
本申请实施例提供的方法中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，SSD)等。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (35)

  1. 一种上报信道状态信息的方法，其特征在于，包括：
    终端设备通过第一消息接收来自网络设备的第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息用于配置信道状态信息CSI的上报；
    所述终端设备根据所述第一配置信息，接收来自所述网络设备的参考信号，并根据所述参考信号，获得CSI；
    所述终端设备根据所述第二配置信息，向所述网络设备上报所述CSI。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收来自所述网络设备的随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报。
  3. 根据权利要求2所述的方法，其特征在于，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应。
  4. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收来自所述网络设备的第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报，所述第一指示信息携带在下列任一种信息中：
    用于调度物理上行共享信道PUSCH的下行控制信息；或，
    随机接入响应对应的下行控制信息；或，
    系统消息对应的下行控制信息；或，
    寻呼消息对应的下行控制信息。
  5. 根据权利要求4所述的方法，其特征在于，所述参考信号的时域资源是根据所述下行控制信息的时域资源确定的。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：
    信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述第一消息为系统消息或寻呼消息。
  9. 一种测量信道状态信息的方法，其特征在于，包括：
    网络设备通过第一消息发送第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息用于配置信道状态信息CSI的上报；
    所述网络设备根据所述第一配置信息，发送所述参考信号；
    所述网络设备接收终端设备根据所述第二配置信息上报的CSI。
  10. 根据权利要求9所述的方法，其特征在于，在所述网络设备根据所述第一配置信 息，发送所述参考信号之前，所述方法还包括：
    所述网络设备向所述终端设备发送随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报。
  11. 根据权利要求10所述的方法，其特征在于，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应。
  12. 根据权利要求9所述的方法，其特征在于，在所述网络设备根据所述第一配置信息，发送所述参考信号之前，所述方法还包括：
    所述网络设备发送第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报，所述第一指示信息携带在下列任一种信息中：
    用于调度物理上行共享信道PUSCH的下行控制信息；或，
    随机接入响应对应的下行控制信息；或，
    系统消息对应的下行控制信息；或，
    寻呼消息对应的下行控制信息。
  13. 根据权利要求12所述的方法，其特征在于，所述参考信号的时域资源是根据所述下行控制信息的时域资源确定的。
  14. 根据权利要求9至13中任一项所述的方法，其特征在于，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
  15. 根据权利要求9至14中任一项所述的方法，其特征在于，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：
    信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
  16. 根据权利要求9至15中任一项所述的方法，其特征在于，所述第一消息为系统消息或寻呼消息。
  17. 一种上报信道状态信息的装置，其特征在于，包括：
    接收单元，用于通过第一消息接收来自网络设备的第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息用于配置信道状态信息CSI的上报；以及，根据所述第一配置信息，接收来自所述网络设备的参考信号；
    处理单元，用于根据所述参考信号，获得CSI；
    发送单元，用于根据所述第二配置信息，向所述网络设备上报所述CSI。
  18. 根据权利要求17所述的装置，其特征在于，所述接收单元还用于：
    接收来自所述网络设备的随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报。
  19. 根据权利要求18所述的装置，其特征在于，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应。
  20. 根据权利要求17所述的装置，其特征在于，所述接收单元还用于：
    接收来自所述网络设备的第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报，所述第一指示信息携带在下列任一种信息中：
    用于调度物理上行共享信道PUSCH的下行控制信息；或，
    随机接入响应对应的下行控制信息；或，
    系统消息对应的下行控制信息；或，
    寻呼消息对应的下行控制信息。
  21. 根据权利要求20所述的装置，其特征在于，所述参考信号的时域资源是根据所述下行控制信息的时域资源确定的。
  22. 根据权利要求17至21中任一项所述的装置，其特征在于，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
  23. 根据权利要求17至22中任一项所述的装置，其特征在于，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：
    信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
  24. 根据权利要求17至23中任一项所述的装置，其特征在于，所述第一消息为系统消息或寻呼消息。
  25. 一种测量信道状态信息的装置，其特征在于，包括：
    发送单元，用于通过第一消息发送第一配置信息和第二配置信息，所述第一消息为组播消息或广播消息，所述第一配置信息用于配置参考信号，所述第二配置信息用于配置信道状态信息CSI的上报；以及，根据所述第一配置信息，发送所述参考信号；
    接收单元，用于接收终端设备根据所述第二配置信息上报的CSI。
  26. 根据权利要求25所述的装置，其特征在于，所述发送单元还用于：
    在根据所述第一配置信息，发送所述参考信号之前，向所述终端设备发送随机接入响应，所述随机接入响应携带第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报。
  27. 根据权利要求26所述的装置，其特征在于，所述随机接入响应为基于竞争的随机接入过程中的随机接入响应。
  28. 根据权利要求25所述的装置，其特征在于，所述发送单元还用于：
    在根据所述第一配置信息，发送所述参考信号之前，发送第一指示信息，所述第一指示信息用于触发所述参考信号的发送和/或所述CSI的上报，所述第一指示信息携带在下列任一种信息中：
    用于调度物理上行共享信道PUSCH的下行控制信息；或，
    随机接入响应对应的下行控制信息；或，
    系统消息对应的下行控制信息；或，
    寻呼消息对应的下行控制信息。
  29. 根据权利要求28所述的装置，其特征在于，所述参考信号的时域资源是根据所述下行控制信息的时域资源确定的。
  30. 根据权利要求25至29中任一项所述的装置，其特征在于，所述第一配置信息包括所述参考信号的类型，所述参考信号的类型包括非零功率参考信号和零功率参考信号，其中，所述非零功率参考信号用于测量信道，所述零功率参考信号用于测量干扰。
  31. 根据权利要求25至30中任一项所述的装置，其特征在于，所述第二配置信息包括所述CSI的上报内容，所述CSI的上报内容包括下列至少一种：
    信道质量指示CQI、秩指示RI、预编码矩阵指示PMI、参考信号资源索引。
  32. 根据权利要求25至31中任一项所述的装置，其特征在于，所述第一消息为系统消息或寻呼消息。
  33. 一种通信系统，其特征在于，包括权利要求17至24中任一项所述的装置和权利要求25至32中任一项所述的装置。
  34. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行权利要求1至16中任一项所述的方法。
  35. 一种芯片系统，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片系统的通信设备执行权利要求1至16中任一项所述的方法。
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