WO2021232890A1 - 信息反馈方法、装置、通信节点和存储介质 - Google Patents

信息反馈方法、装置、通信节点和存储介质 Download PDF

Info

Publication number
WO2021232890A1
WO2021232890A1 PCT/CN2021/079287 CN2021079287W WO2021232890A1 WO 2021232890 A1 WO2021232890 A1 WO 2021232890A1 CN 2021079287 W CN2021079287 W CN 2021079287W WO 2021232890 A1 WO2021232890 A1 WO 2021232890A1
Authority
WO
WIPO (PCT)
Prior art keywords
communication node
csi
snr
information
change rate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/079287
Other languages
English (en)
French (fr)
Inventor
杨振
张楠
田开波
曹伟
张晨晨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to KR1020227022382A priority Critical patent/KR102659591B1/ko
Priority to JP2022542703A priority patent/JP7352744B2/ja
Priority to EP21808755.9A priority patent/EP4156567A4/en
Priority to US17/758,467 priority patent/US12255848B2/en
Publication of WO2021232890A1 publication Critical patent/WO2021232890A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • This application relates to the field of communications, for example, to an information feedback method, device, communication node, and storage medium.
  • UE user equipment
  • Channel State Channel State
  • MCS Modulation and Coding Scheme
  • CQI Channel Quality Indication
  • AMC Adaptive Modulation and Coding
  • this mode has two disadvantages: one is that the CQI fed back by the UE is poor in timeliness in a large delay scenario, which makes the scheduled MCS poorly match the current channel state, which affects the link performance; In this mode, in order to achieve a higher matching degree, a smaller feedback period is configured, which results in larger signaling overhead.
  • the present application provides an information feedback method, device, communication node, and storage medium to improve the matching degree between MCS and channel state, and reduce feedback signaling overhead.
  • the embodiment of the present application provides an information feedback method, which is applied to a first communication node, and includes:
  • the embodiment of the present application provides an information feedback method, which is applied to a second communication node, and includes:
  • Receive demodulation capability information and CSI fed back by the first communication node determine the MCS scheduled each time according to the demodulation capability information and the CSI; the CSI includes: the SNR and the SNR change rate of the received signal.
  • the embodiment of the present application provides an information feedback device, which is applied to a first communication node, and includes:
  • the first receiver is configured to receive a downlink data sending instruction sent by the second communication node; the first feedback device is configured to trigger the first communication node to feed back demodulation capability information and CSI to the second communication node according to the downlink data sending instruction ;
  • the CSI includes: SNR and SNR change rate of the received signal.
  • the embodiment of the present application provides an information feedback device, which is applied to a second communication node, and includes:
  • the receiver is configured to receive the demodulation capability information and CSI fed back by the first communication node; the determining module is configured to determine the MCS scheduled each time according to the demodulation capability information and the CSI; the CSI includes: SNR and SNR rate of change.
  • the embodiment of the present application provides a communication node, including: a communication module, a memory, and one or more processors; the communication module is configured to perform communication interaction between the communication node and other communication nodes; the memory , Configured to store one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors implement the information feedback method described in any of the above embodiments .
  • An embodiment of the present application provides a storage medium that stores a computer program, and when the computer program is executed by a processor, the information feedback method described in any of the foregoing embodiments is implemented.
  • Figure 1 is a schematic diagram of a closed-loop AMC mechanism for scheduling MCS provided in related technologies
  • Figure 2 is a schematic diagram of a matching relationship between MCS and current channel state provided by related technologies
  • FIG. 3 is a flowchart of an information feedback method provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of another information feedback method provided by an embodiment of the present application.
  • FIG. 5 is a structural block diagram of an information feedback device provided by an embodiment of the present application.
  • Fig. 6 is a structural block diagram of another information feedback device provided by an embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of a communication node provided by an embodiment of the present application.
  • Fig. 1 is a schematic diagram of a closed-loop AMC mechanism for scheduling MCS provided in the related art.
  • the closed-loop AMC mechanism shown in Figure 1 is used to ensure that the scheduled MCS matches the current channel state.
  • the process of using the closed-loop AMC mechanism to schedule the MCS will be described.
  • the UE reports a CQI value in each CSI reporting period.
  • the effective range of the CQI value is 0-15.
  • the BS maps the CQI value to MCS according to certain rules, and before the next CSI value report arrives, the BS uses the MCS to perform service scheduling on the UE.
  • the CQI reporting delay is related to the communication distance between the UE and the BS.
  • the CQI reporting period is closely related to performance. The smaller the CQI reporting period, the higher the matching degree between the MCS and the current channel state, and the greater the signaling overhead; otherwise, the lower the matching degree, the smaller the signaling overhead.
  • Fig. 2 is a schematic diagram of a matching relationship between MCS and current channel state provided by related technologies.
  • the CQI reporting cycle shown in Figure 2 (b) is 1/2 of Figure (a). It can be seen that the MCS scheduled in Figure (b) has a higher match with the current channel state. Spend.
  • the first communication node as the UE and the second communication node as the base station (Base Station, BS) as an example, the matching relationship between the MCS and the current channel state will be described.
  • every time period between two dotted lines is used as a CQI reporting period.
  • Non-Terrestrial Networks the function of the BS is carried on the satellite or the ground station, and the communication distance between the UE and the BS is much longer than the ground cellular network.
  • the round-trip delay of the signal is 4 to 13 ms.
  • the CQI reporting delay is also greater than that of the terrestrial network, and the effectiveness of CQI reporting is low.
  • configuring a smaller CQI reporting period will cause an increase in uplink overhead.
  • the CSI feedback method is not suitable for NTN communication scenarios. Therefore, how to configure a new CSI feedback method suitable for NTN communication scenarios, which not only improves the matching degree between the scheduled MCS and the current channel state, but also reduces the signaling overhead, is a problem to be solved urgently.
  • the embodiment of the application proposes an information feedback method.
  • the first communication node does not need to feed back the CQI level, but directly feeds back the measured signal-to-noise ratio (SNR) and SNR change rate, etc.
  • Information the second communication node uses this information and the CSI feedback delay to predict the SNR at the scheduling time, and then selects the appropriate MCS to schedule the first communication node according to the predicted SNR, thereby improving the scheduled MCS and the actual current channel
  • the matching degree of the state helps to improve the performance of the NTN network.
  • FIG. 3 is a flowchart of an information feedback method provided by an embodiment of the present application. This embodiment may be executed by a first communication node (for example, a terminal side such as a UE). As shown in Figure 3, this embodiment includes: S102-S104.
  • the downlink data sending instruction refers to an instruction that the second communication node plans to send downlink service data to the first communication node.
  • the second communication node calculates the best scheduled MCS at this time.
  • the second communication node sends a downlink data transmission instruction to the first communication node, so that when the first communication node receives the downlink data transmission instruction, it feeds back to the second communication node the demodulation capability required to calculate the optimal scheduling MCS Information and CSI.
  • S104 Trigger the first communication node to feed back demodulation capability information and CSI to the second communication node according to the downlink data sending instruction.
  • CSI includes: SNR and SNR change rate of the received signal.
  • the demodulation capability information refers to the SNR corresponding to the block error rate (BLock Error Rate, BLER) reaching a preset value every time the first communication node detects the data scheduled by the MCS.
  • BLER block error rate
  • the demodulation capability information of the UE refers to the SNR required for the BLER to reach a specified value when the UE detects data scheduled by the MCS for each MCS.
  • the first communication node when the first communication node detects the downlink data transmission instruction, it does not need to feed back the CQI level, but directly feeds back information such as the measured SNR and SNR change rate to the second communication node, and the second communication node uses these Information and CSI feedback delay predict the SNR at the scheduling time, and then select the appropriate MCS to schedule the first communication node according to the predicted SNR, which improves the matching degree between the scheduled MCS and the actual current channel state, which helps to improve The performance of the NTN network.
  • the demodulation capability information of the second communication node is fed back to the second communication node through Radio Resource Control (RRC) signaling or Media Access Control (MAC) signaling.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the CSI is fed back to the second communication node through the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the CSI feedback method includes one of the following: periodic; aperiodic.
  • the feedback when the first communication node feeds back the CSI to the second communication node, the feedback may be periodic or non-periodical.
  • the information feedback method further includes: receiving configuration parameters sent by the second communication node through RRC signaling; and feeding back CSI to the second communication node according to the configuration parameters.
  • the second communication node when the first communication node periodically feeds back CSI, the second communication node sends configuration parameters to the first communication node through RRC signaling, and the first communication node feeds back to the second communication node according to the configuration parameters.
  • CSI when the first communication node periodically feeds back CSI, the second communication node sends configuration parameters to the first communication node through RRC signaling, and the first communication node feeds back to the second communication node according to the configuration parameters.
  • the information feedback method when the CSI is fed back aperiodically, the information feedback method further includes: receiving downlink control information (DCI) signaling sent by the second communication node; The parameter feeds back the CSI to the second communication node.
  • DCI downlink control information
  • the second communication node instructs the first communication node to send through DCI signaling, and the first communication node sends the second communication node to the second communication node according to the parameters indicated by the DCI signaling.
  • the communication node feeds back CSI.
  • the SNR change rate includes: a first-order SNR change rate.
  • the calculation formula of the first-order SNR rate of change includes:
  • ⁇ t tt latest
  • t latest represents the latest CSI feedback time
  • t represents the current time of MCS scheduling
  • SNR(t) represents the SNR at time t
  • SNR(t+ ⁇ t) represents the SNR at time t+ ⁇ t.
  • the SNR change rate further includes: 2 to n-th order SNR change rates, where n is a positive integer greater than or equal to 2.
  • the calculation formula for the n-th order SNR rate of change includes:
  • r (n-1) (t) represents the (n-1) order SNR change rate at time t
  • r (n-1) (t+ ⁇ t) represents the (n-1) order at time (t+ ⁇ t) SNR rate of change
  • ⁇ t tt latest
  • t latest represents the latest feedback time of CSI information
  • t represents the current time of MCS scheduling.
  • the maximum order of the SNR rate of change is configured by the second communication node to the first communication node through RRC signaling, MAC signaling, or DCI signaling; or, the default maximum order of the SNR rate of change is 1.
  • Fig. 4 is a flowchart of another information feedback method provided by an embodiment of the present application. This embodiment may be executed by a second communication node (for example, a network side such as a base station). As shown in Figure 4, this embodiment includes: S202-S204.
  • the S204 Determine the MCS scheduled each time according to the demodulation capability information and the CSI; the CSI includes: the SNR and the SNR change rate of the received signal.
  • the second communication node when the second communication node plans to send downlink service data to the first communication node, the second communication node needs to first send a downlink data transmission instruction to the first communication node, and the downlink data transmission is received at the first communication node.
  • the second communication node When instructing, feed back its demodulation capability information and CSI to the second communication node, so that the second communication node predicts the SNR at the scheduling time based on the demodulation capability information and CSI, and then selects the appropriate MCS pair based on the predicted SNR
  • the first communication node performs scheduling, which improves the matching degree between the scheduled MCS and the actual current channel state, and helps to improve the performance of the NTN network.
  • the CSI feedback method includes one of the following: periodic; aperiodic.
  • the information feedback method applied to the second communication node further includes:
  • the configuration parameter is sent to the first communication node through RRC signaling, and the configuration parameter is used to indicate the manner in which the first communication node feeds back the CSI.
  • the information feedback method applied to the second communication node further includes:
  • the DCI signaling is used to indicate the manner in which the first communication node feeds back CSI.
  • the SNR change rate includes: a first-order SNR change rate.
  • the SNR change rate further includes: 2 to n-th order SNR change rates, where n is a positive integer greater than or equal to 2.
  • the maximum order of the SNR rate of change is configured by the second communication node to the first communication node through RRC signaling, MAC signaling, or DCI signaling; or, the default maximum order of the SNR rate of change is 1.
  • the MCS determination process will be described.
  • the BLER target value is set to ⁇ .
  • the BS configures periodic CSI reporting (ie, feedback) to the UE through RRC signaling, the reporting period is P subframes, and the maximum order of the reported SNR change rate is n.
  • the UE reports its demodulation capability information to the BS through RRC signaling.
  • Table 1 is a schematic table of content included in a demodulation capability information provided by an embodiment of the present application. As shown in Table 1, the demodulation capability information includes MCS and SNR thresholds, and the corresponding relationship between the two.
  • Table 1 A schematic table of the content contained in the demodulation capability information
  • the UE periodically reports the CSI to the BS in a reporting period of every P subframes.
  • the CSI includes the SNR of the received signal and the SNR change rate of 1 to n steps.
  • the BS plans to send downlink service data to the UE, and calculates the best scheduling MCS at this time. Assuming that the latest information reported by the CSI at time t latest is SNR and r (1) , r (2) ,..., r (n) , the BS estimates the SNR scheduled at time t according to the reported CSI information, The calculation expression of the estimated value is as follows:
  • the BS compares ⁇ with the SNR threshold corresponding to each MCS in the UE demodulation capability information shown in Table 1, and selects the largest MCS with a threshold less than or equal to ⁇ as the MCS for this scheduling.
  • the MCS determination process will be described.
  • the BS schedules every subframe once, and the length of the subframe is 1ms.
  • the BS configures periodic CSI reporting to the UE through RRC signaling, the maximum order of the reported SNR change rate is 2, the reporting period is 10 ms, and the intra-period offset is 0 ms.
  • the UE measures the SNR every 5 ms, and the last three SNR measurement values are SNR 1 , SNR 2 , and SNR 3 respectively .
  • UE calculates the rate of change of SNR, the first-order SNR rate of change The second-order SNR rate of change
  • the UE reports CSI information to the BS in subframe 0, and the CSI includes SNR 3 , ⁇ and ⁇ .
  • the reporting delay of CSI information is 0 ms, and the estimated SNR values from subframe 1 to subframe 9 are calculated as follows:
  • the UE updates the CSI information to the BS every 10 ms, and the BS uses the updated CSI information to calculate the SNR estimation values for the next 9 subframes.
  • the BS determines the MCS used for scheduling the UE according to the estimated SNR of each subframe and the demodulation capability reported by the UE.
  • the MCS determination process is described.
  • the BS schedules every subframe once, and the length of the subframe is 1ms.
  • the BS configures periodic CSI reporting to the UE through RRC signaling, and the maximum order of the reported SNR change rate is 2, the reporting period is 20 ms, and the intra-period offset is 3 ms.
  • the UE configures periodic CSI reporting according to the RRC signaling, and reports CSI information to the BS at 3ms, 23ms, 43ms,..., and the CSI information contains the SNR and the 1st and 2nd order rate of change of the SNR.
  • the BS instructs the UE to report CSI information at 20 ms through DCI signaling at 15 ms, and the maximum order of the reported SNR change rate is 1.
  • the UE reports the CSI information at 20 ms.
  • the CSI information includes the SNR and the first-order rate of change of the SNR.
  • FIG. 5 is a structural block diagram of an information feedback device provided by an embodiment of the present application. This embodiment is executed by the first communication node. As shown in FIG. 5, this embodiment includes: a first receiver 302 and a first feedback unit 304.
  • the first receiver 302 is configured to receive a downlink data transmission instruction sent by the second communication node; the first feedback unit 304 is configured to trigger the first communication node to feed back demodulation capability information and CSI to the second communication node according to the downlink data transmission instruction ; CSI includes: SNR and SNR change rate of the received signal.
  • the information feedback device provided in this embodiment is configured to implement the information feedback method applied to the first communication node in the embodiment shown in FIG.
  • the demodulation capability information of itself is fed back to the second communication node through RRC signaling or MAC signaling.
  • CSI is fed back to the second communication node through PUCCH or PUSCH.
  • the CSI feedback method includes one of the following: periodic; aperiodic.
  • the information feedback device in the case of periodically feeding back CSI, the information feedback device further includes:
  • the second receiver is configured to receive configuration parameters sent by the second communication node through RRC signaling; the second feedback device is configured to feed back CSI to the second communication node according to the configuration parameters.
  • the information feedback device further includes:
  • the third receiver is configured to receive the DCI signaling sent by the second communication node; the third feedbacker is configured to feed back CSI to the second communication node according to the parameters indicated by the DCI signaling.
  • the SNR change rate includes: a first-order SNR change rate.
  • the SNR change rate further includes: 2 to n-th order SNR change rates, where n is a positive integer greater than or equal to 2.
  • the maximum order of the SNR rate of change is configured by the second communication node to the first communication node through RRC signaling, MAC signaling, or DCI signaling; or, the default maximum order of the SNR rate of change is 1.
  • FIG. 6 is a structural block diagram of another information feedback device provided in an embodiment of the present application. This embodiment is executed by the second communication node. As shown in FIG. 6, this embodiment includes: a receiver 402 and a determining module 404.
  • the receiver is configured to receive demodulation capability information and CSI fed back by the first communication node; the determining module is configured to determine the MCS scheduled each time according to the demodulation capability information and CSI; the CSI includes: SNR and SNR change rate of the received signal.
  • the information feedback device provided in this embodiment is configured to implement the information feedback method applied to the second communication node in the embodiment shown in FIG.
  • the CSI feedback method includes one of the following: periodic; aperiodic.
  • the information feedback device when the first communication node periodically feeds back CSI, the information feedback device further includes:
  • the first transmitter is configured to send configuration parameters to the first communication node through RRC signaling, and the configuration parameters are used to indicate a manner in which the first communication node feeds back CSI.
  • the information feedback device further includes:
  • the second transmitter is configured to send DCI signaling to the first communication node; the DCI signaling is used to indicate the manner in which the first communication node feeds back CSI.
  • the SNR change rate includes: a first-order SNR change rate.
  • the SNR change rate further includes: 2 to n-th order SNR change rates, where n is a positive integer greater than or equal to 2.
  • the maximum order of the SNR rate of change is configured by the second communication node to the first communication node through RRC signaling, MAC signaling, or DCI signaling; or, the default maximum order of the SNR rate of change is 1.
  • Fig. 7 is a schematic structural diagram of a communication node provided by an embodiment of the present application.
  • the communication node provided by the present application includes: a processor 510, a memory 520, and a communication module 530.
  • the number of processors 510 in the communication node may be one or more.
  • One processor 510 is taken as an example in FIG. 7.
  • the number of memories 520 in the communication node may be one or more, and one memory 520 is taken as an example in FIG. 7.
  • the processor 510, the memory 520, and the communication module 530 of the communication node may be connected through a bus or in other ways. In FIG. 7, the connection through a bus is taken as an example.
  • the communication node may be the first communication node (for example, a terminal side such as a user equipment).
  • the memory 520 can be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to a communication node in any embodiment of the present application (for example, the first The receiver 302 and the first feedback device 304).
  • the memory 520 may include a storage program area and a storage data area.
  • the storage program area may store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the communication node, and the like.
  • the memory 520 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.
  • the memory 520 may include a memory remotely provided with respect to the processor 510, and these remote memories may be connected to a communication node through a network.
  • Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • the communication module 530 is configured to communicate and interact with other synchronization nodes.
  • the communication node is the first communication node
  • the communication node provided above can be configured to execute the information feedback method applied to the first communication node provided by any of the above embodiments, and has corresponding functions and effects.
  • the communication node is the second communication node
  • the communication node provided above can be configured to execute the information feedback method applied to the second communication node provided by any of the above embodiments, and has corresponding functions and effects.
  • the embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are executed by a computer processor, they are used to execute an information feedback method applied to a first communication node.
  • the method includes: receiving the first communication node. 2.
  • CSI includes: SNR and SNR change rate of the received signal.
  • the embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions are executed by a computer processor, they are used to execute an information feedback method applied to a second communication node.
  • the method includes: receiving a second communication node.
  • the demodulation capability information and CSI fed back by a communication node; determine the MCS scheduled each time according to the demodulation capability information and CSI;
  • CSI includes: the SNR and SNR change rate of the received signal.
  • user equipment covers any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicular mobile stations.
  • the various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.
  • Computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages Source code or object code.
  • ISA Instruction Set Architecture
  • the block diagram of any logic flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions.
  • the computer program can be stored on the memory.
  • the memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc.
  • Computer-readable media may include non-transitory storage media.
  • the data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (ASICs) ), programmable logic devices (Field-Programmable Gate Array, FPGA), and processors based on multi-core processor architecture.
  • DSP Digital Signal Processing
  • ASICs application specific integrated circuits
  • FPGA Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)

Abstract

本文公开一种信息反馈方法、装置、通信节点和存储介质。该信息反馈方法包括：接收第二通信节点发送的下行数据发送指令；根据下行数据发送指令触发第一通信节点向第二通信节点反馈解调能力信息和CSI；CSI包括：接收信号的SNR和SNR变化率。

Description

信息反馈方法、装置、通信节点和存储介质 技术领域
本申请涉及通信领域，例如涉及一种信息反馈方法、装置、通信节点和存储介质。
背景技术
在无线通信技术(例如，长期演进(Long Term Evolution，LTE)或新空口(New Radio，NR))的下行链路中，采用用户设备(User Equipment，UE)周期性反馈信道状态信息(Channel State Information，CSI)，基站根据UE上报的CSI中的信道质量指示(Channel Quality Indication，CQI)信息选择合适的调制编码格式(Modulation and Coding Scheme，MCS)进行调度的闭环自适应调制编码(Adaptive Modulation and Coding，AMC)模式。这种闭环AMC工作模式能够使得调度的MCS和当前的信道状态较好地匹配，从而提高通信链路在时变信道下的性能。然而这种模式存在两个缺点：一是在大时延场景下UE所反馈的CQI时效性较差，使得调度的MCS与当前的信道状态匹配不佳，进而影响链路性能；二是在这种模式下，为了达到较高的匹配度配置较小的反馈周期，从而导致较大的信令开销。
发明内容
本申请提供一种信息反馈方法、装置、通信节点和存储介质，提高MCS和信道状态的匹配度，以及降低反馈的信令开销。
本申请实施例提供一种信息反馈方法，应用于第一通信节点，包括：
接收第二通信节点发送的下行数据发送指令；根据所述下行数据发送指令触发第一通信节点向第二通信节点反馈解调能力信息和信道状态信息CSI；所述CSI包括：接收信号的信噪比SNR和SNR变化率。
本申请实施例提供一种信息反馈方法，应用于第二通信节点，包括：
接收第一通信节点反馈的解调能力信息和CSI；根据所述解调能力信息和所述CSI确定每次调度的MCS；所述CSI包括：接收信号的SNR和SNR变化率。
本申请实施例提供一种信息反馈装置，应用于第一通信节点，包括：
第一接收器，配置为接收第二通信节点发送的下行数据发送指令；第一反馈器，配置为根据所述下行数据发送指令触发第一通信节点向第二通信节点反 馈解调能力信息和CSI；所述CSI包括：接收信号的SNR和SNR变化率。
本申请实施例提供一种信息反馈装置，应用于第二通信节点，包括：
接收器，配置为接收第一通信节点反馈的解调能力信息和CSI；确定模块，配置为根据所述解调能力信息和所述CSI确定每次调度的MCS；所述CSI包括：接收信号的SNR和SNR变化率。
本申请实施例提供一种通信节点，包括：通信模块，存储器，以及一个或多个处理器；所述通信模块，配置为在所述通信节点和其他通信节点之间进行通信交互；所述存储器，配置为存储一个或多个程序；当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现上述任一实施例所述的信息反馈方法。
本申请实施例提供一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现上述任一实施例所述的信息反馈方法。
附图说明
图1是相关技术中提供的一种采用闭环AMC机制调度MCS的示意图；
图2是相关技术提供的一种MCS和当前信道状态之间匹配关系的示意图；
图3是本申请实施例提供的一种信息反馈方法的流程图；
图4是本申请实施例提供的另一种信息反馈方法的流程图；
图5是本申请实施例提供的一种信息反馈装置的结构框图；
图6是本申请实施例提供的另一种信息反馈装置的结构框图；
图7是本申请实施例提供的一种通信节点的结构示意图。
具体实施方式
下文中将结合附图对本申请的实施例进行说明。
图1是相关技术中提供的一种采用闭环AMC机制调度MCS的示意图。在无线通信技术，比如，LTE或NR的下行链路中，采用如图1所示的闭环AMC机制来保证调度的MCS和当前信道状态匹配。示例性地，以第一通信节点为UE，第二通信节点为基站(Base Station，BS)为例，对采用闭环AMC机制调度MCS的过程进行说明。
如图1所示，UE在每个CSI上报周期内上报一个CQI值，该CQI值的有效范围为0～15，CQI值越大表示信道状态越好，支持的码率和调制阶数就越高。BS将该CQI值按照一定规则映射为MCS，在下一次CSI值上报到达之前，BS 均使用该MCS对UE进行业务调度。
在这种机制中，MCS和当前信道状态的匹配度的影响因素有两个，一个是CQI上报延迟，另一个是CQI上报周期。CQI上报延迟与UE和BS之间的通信距离相关，CQI上报延迟的值越大，UE所上报的CQI有效性越低。在时变信道下，CQI上报周期和性能密切相关，CQI上报周期越小，MCS和当前信道状态的匹配度越高，信令开销越大；否则匹配度越低，信令开销越小。
图2是相关技术提供的一种MCS和当前信道状态之间匹配关系的示意图。如图2所示，图2中的(b)图所示的CQI上报周期是图(a)的1/2，可以看到图(b)中调度的MCS与当前信道状态具有更高的匹配度。示例性地，以第一通信节点为UE，第二通信节点为基站(Base Station，BS)为例，对MCS和当前信道状态之间的匹配关系进行说明。如图2所示，每两个虚线之间的时间段，作为一个CQI上报周期。
在非地面网络(Non-Terrestrial Networks，NTN)场景中，BS的功能承载在卫星或地面站上，UE和BS之间的通信距离远大于地面蜂窝网络。以高度为600km，最小服务仰角为10度的低轨卫星网络为例，信号的往返延迟为4～13ms。在这种场景中，CQI上报延迟也大于地面网络，CQI上报的有效性较低。另一方面由于卫星覆盖范围大，UE数量多，为了达到高的MCS匹配度而配置较小的CQI上报周期将导致上行链路开销增大。由于存在以上弊端，CSI反馈方法并不适合NTN通信场景。因此，如何配置一种新的适用于NTN通信场景CSI反馈方法，既提高调度的MCS和当前信道状态的匹配度，又可以降低信令的开销，是亟待解决的问题。
本申请实施例提出一种信息反馈方法，在该信息反馈方法的实现中，第一通信节点无需反馈CQI等级，而是直接反馈测量的信噪比(Signal Noise Ratio，SNR)和SNR变化率等信息，第二通信节点利用这些信息以及CSI反馈时延对调度时刻的SNR进行预测，然后依据预测的SNR选择合适的MCS对第一通信节点进行调度，从而提高了调度的MCS和实际的当前信道状态的匹配度，有助于提升NTN网络的性能。
在一实施例中，图3是本申请实施例提供的一种信息反馈方法的流程图。本实施例可以由第一通信节点(比如，UE等终端侧)执行。如图3所示，本实施例包括：S102-S104。
S102、接收第二通信节点发送的下行数据发送指令。
在实施例中，下行数据发送指令指的是第二通信节点计划向第一通信节点发送下行业务数据的指令。在实际通信过程中，在第二通信节点计划向第一通 信节点发送下行业务数据的情况下，第二通信节点计算此时最佳调度的MCS。此时，第二通信节点向第一通信节点发送下行数据发送指令，以使第一通信节点在接收到下行数据发送指令时，向第二通信节点反馈计算最佳调度MCS所需要的解调能力信息和CSI。
S104、根据下行数据发送指令触发第一通信节点向第二通信节点反馈解调能力信息和CSI。
在实施例中，CSI包括：接收信号的SNR和SNR变化率。解调能力信息指的是第一通信节点检测每次MCS调度的数据时，误块率(BLock Error Rate，BLER)达到预设值所对应的SNR。也就是说，UE的解调能力信息是指对于每个MCS，UE检测以该MCS调度的数据时，BLER达到一指定值所需要的SNR。
在实施例中，在第一通信节点检测到下行数据发送指令的情况下，无需反馈CQI等级，而是直接反馈测量的SNR和SNR变化率等信息至第二通信节点，第二通信节点利用这些信息以及CSI反馈时延对调度时刻的SNR进行预测，然后依据预测的SNR选择合适的MCS对第一通信节点进行调度，提高了调度的MCS和实际的当前信道状态的匹配度，有助于提升NTN网络的性能。
在一实施例中，通过无线资源控制(Radio Resource Control，RRC)信令或介质访问控制(Media Access Control，MAC)信令向第二通信节点反馈自身的解调能力信息。
在一实施例中，通过物理上行控制信道(Physical Uplink Control Channel，PUCCH)或物理上行共享信道(Physical Uplink Shared Channel，PUSCH)向第二通信节点反馈CSI。
在一实施例中，CSI的反馈方式包括下述之一：周期性的；非周期性的。在实施例中，第一通信节点在向第二通信节点反馈CSI的情况下，可以是周期性的反馈，也可以是非周期性的反馈。
在一实施例中，在周期性地反馈CSI的情况下，信息反馈方法，还包括：接收第二通信节点通过RRC信令发送的配置参数；按照配置参数向第二通信节点反馈CSI。
在实施例中，在第一通信节点周期性地反馈CSI的情况下，由第二通信节点通过RRC信令发送配置参数给第一通信节点，第一通信节点按照配置参数向第二通信节点反馈CSI。
在一实施例中，在非周期性地反馈CSI的情况下，信息反馈方法，还包括：接收第二通信节点发送的下行控制信息(Downlink Control Information，DCI)信令；按照DCI信令指示的参数向第二通信节点反馈CSI。
在实施例中，在第一通信节点非周期性地反馈CSI的情况下，由第二通信节点通过DCI信令指示第一通信节点发送，第一通信节点按照DCI信令指示的参数向第二通信节点反馈CSI。
在一实施例中，SNR变化率包括：一阶SNR变化率。
在实施例中，一阶SNR变化率的计算公式包括：
Figure PCTCN2021079287-appb-000001
其中，Δt＝t-t latest，t latest表示最近一次CSI的反馈时刻，t表示MCS调度的当前时刻，SNR(t)表示t时刻的SNR，SNR(t+Δt)表示t+Δt时刻的SNR。
在一实施例中，SNR变化率还包括：2～n阶SNR变化率，n为大于或等于2的正整数。
n阶SNR变化率的计算公式包括：
Figure PCTCN2021079287-appb-000002
其中，r (n-1)(t)表示t时刻的(n-1)阶SNR变化率，r (n-1)(t+Δt)表示(t+Δt)时刻的(n-1)阶SNR变化率，Δt＝t-t latest，t latest表示最近一次CSI信息的反馈时刻，t表示MCS调度的当前时刻。
在一实施例中，SNR变化率的最大阶数由第二通信节点通过RRC信令、MAC信令或DCI信令配置至第一通信节点；或者，默认SNR变化率的最大阶数为1。
图4是本申请实施例提供的另一种信息反馈方法的流程图。本实施例可以由第二通信节点(比如，基站等网络侧)执行。如图4所示，本实施例包括：S202-S204。
S202、接收第一通信节点反馈的解调能力信息和CSI。
S204、根据解调能力信息和CSI确定每次调度的MCS；CSI包括：接收信号的SNR和SNR变化率。
在实施例中，第二通信节点计划向第一通信节点发送下行业务数据的情况下，第二通信节点需先向第一通信节点发送下行数据发送指令，在第一通信节点接收到下行数据发送指令时，将自身的解调能力信息和CSI反馈至第二通信节点，以使第二通信节点根据解调能力信息和CSI对调度时刻的SNR进行预测，然后依据预测的SNR选择合适的MCS对第一通信节点进行调度，提高了调度的MCS和实际的当前信道状态之间的匹配度，有助于提升了NTN网络的性能。
在一实施例中，CSI的反馈方式包括下述之一：周期性的；非周期性的。
在一实施例中，在第一通信节点周期性地反馈CSI的情况下，应用于第二通信节点的信息反馈方法，还包括：
通过RRC信令向第一通信节点发送配置参数，配置参数用于指示第一通信节点反馈CSI的方式。
在一实施例中，在第一通信节点非周期性地反馈CSI的情况下，应用于第二通信节点的信息反馈方法，还包括：
向第一通信节点发送DCI信令；DCI信令用于指示第一通信节点反馈CSI的方式。
在一实施例中，SNR变化率包括：一阶SNR变化率。
在一实施例中，SNR变化率还包括：2～n阶SNR变化率，n为大于或等于2的正整数。
在一实施例中，SNR变化率的最大阶数由第二通信节点通过RRC信令、MAC信令或DCI信令配置至第一通信节点；或者，默认SNR变化率的最大阶数为1。
在实施例中，对应用于第二通信节点的信息反馈方法中涉及到的CSI、CSI的反馈方式、SNR变化率等信息的解释说明，见上述应用于第一通信节点的信息反馈方法对应实施例的描述，在此不再赘述。
在一实现方式中，以第一通信节点为UE，第二通信节点为BS为例，对MCS的确定过程进行说明。在一个通信系统中，假设BLER目标值设定为α。
在实施例中，BS通过RRC信令对UE配置周期性的CSI上报(即反馈)，上报周期为P个子帧，上报的SNR变化率的最大阶数为n。
UE通过RRC信令向BS上报自身的解调能力信息。表1是本申请实施例提供的一种解调能力信息所包含内容的示意表。如表1所示，该解调能力信息包含MCS和SNR门限值，以及两者之间的对应关系。
表1一种解调能力信息所包含内容的示意表
MCS SNR门限值
0 T 0
1 T 1
2 T 2
... ...
K T K
UE以每P个子帧的上报周期向BS周期性上报CSI。在CSI中包含接收信号的SNR和1～n阶的SNR变化率。
在t时刻，BS计划向UE发送下行业务数据，此时计算此时最佳的调度MCS。假设最近一次在t latest时刻的CSI上报的信息为SNR和r (1),r (2),...,r (n)，则BS根据上报的CSI信息对t时刻调度的SNR进行估计，估计值的计算表达式如下：
Figure PCTCN2021079287-appb-000003
其中，τ是该系统中CQI上报延迟，Δt＝t-t latest。
BS比较γ和如表1中所示的UE解调能力信息中各个MCS对应的SNR门限，选择门限值小于或等于γ，且最大的一个MCS作为本次调度的MCS。
在一实现方式中，以第一通信节点为UE，第二通信节点为BS为例，对MCS的确定过程进行说明。在一个通信系统中，BS每个子帧调度一次，子帧长度为1ms。
BS通过RRC信令向UE配置周期性的CSI上报，上报的SNR变化率的最大阶数为2，上报周期为10ms，周期内偏移为0ms。
UE每5ms测量一次SNR，最近三次SNR的测量值分别为SNR 1，SNR 2，SNR 3。
UE计算SNR的变化率，一阶SNR变化率为
Figure PCTCN2021079287-appb-000004
二阶SNR变化率为
Figure PCTCN2021079287-appb-000005
UE在子帧0将CSI信息上报至BS，该CSI中包含SNR 3，α和β。
CSI信息的上报延迟为0ms，则子帧1到子帧9的SNR估计值计算如下：
Figure PCTCN2021079287-appb-000006
以此类推，每10ms UE向BS更新CSI信息，BS用更新后的CSI信息计算接下来9个子帧的SNR估计值。
BS根据估计出的每个子帧的SNR和UE上报的解调能力确定调度该UE所使用的MCS。
在一实现方式中，以第一通信节点为UE，第二通信节点为BS为例，对 MCS的确定过程进行说明。在一个通信系统中，BS每个子帧调度一次，子帧长度为1ms。
BS通过RRC信令向UE配置周期性的CSI上报，并且上报的SNR变化率的最大阶数为2，上报周期为20ms，周期内偏移为3ms。
UE按照RRC信令配置周期性CSI上报，分别在3ms，23ms，43ms，……时刻向BS上报CSI信息，该CSI信息中包含SNR和SNR的1、2阶变化率。
BS在15ms时刻通过DCI信令指示UE在20ms时刻上报CSI信息，并且上报的SNR变化率的最大阶数为1。
UE按照DCI信令指示的非周期CSI上报，在20ms时刻上报CSI信息，该CSI信息中包含SNR和SNR的1阶变化率。
在一实施例中，图5是本申请实施例提供的一种信息反馈装置的结构框图。本实施例由第一通信节点执行。如图5所示，本实施例包括：第一接收器302和第一反馈器304。
第一接收器302，配置为接收第二通信节点发送的下行数据发送指令；第一反馈器304，配置为根据下行数据发送指令触发第一通信节点向第二通信节点反馈解调能力信息和CSI；CSI包括：接收信号的SNR和SNR变化率。
本实施例提供的信息反馈装置设置为实现图3所示实施例的应用于第一通信节点的信息反馈方法，本实施例提供的信息反馈装置实现原理和技术效果类似，此处不再赘述。
在一实施例中，通过RRC信令或MAC信令向第二通信节点反馈自身的解调能力信息。
在一实施例中，通过PUCCH或PUSCH向第二通信节点反馈CSI。
在一实施例中，CSI的反馈方式包括下述之一：周期性的；非周期性的。
在一实施例中，在周期性地反馈CSI的情况下，信息反馈装置，还包括：
第二接收器，配置为接收第二通信节点通过RRC信令发送的配置参数；第二反馈器，配置为按照配置参数向第二通信节点反馈CSI。
在一实施例中，在非周期性地反馈CSI的情况下，信息反馈装置，还包括：
第三接收器，配置为接收第二通信节点发送的DCI信令；第三反馈器，配置为按照DCI信令指示的参数向第二通信节点反馈CSI。
在一实施例中，SNR变化率包括：一阶SNR变化率。
在一实施例中，SNR变化率还包括：2～n阶SNR变化率，n为大于或等于 2的正整数。
在一实施例中，SNR变化率的最大阶数由第二通信节点通过RRC信令、MAC信令或DCI信令配置至第一通信节点；或者，默认SNR变化率的最大阶数为1。
在一实施例中，图6是本申请实施例提供的另一种信息反馈装置的结构框图。本实施例由第二通信节点执行。如图6所示，本实施例包括：接收器402和确定模块404。
接收器，配置为接收第一通信节点反馈的解调能力信息和CSI；确定模块，配置为根据解调能力信息和CSI确定每次调度的MCS；CSI包括：接收信号的SNR和SNR变化率。
本实施例提供的信息反馈装置设置为实现图4所示实施例的应用于第二通信节点的信息反馈方法，本实施例提供的信息反馈装置实现原理和技术效果类似，此处不再赘述。
在一实施例中，CSI的反馈方式包括下述之一：周期性的；非周期性的。
在一实施例中，在第一通信节点周期性地反馈CSI的情况下，信息反馈装置，还包括：
第一发送器，配置为通过RRC信令向第一通信节点发送配置参数，配置参数用于指示第一通信节点反馈CSI的方式。
在一实施例中，在第一通信节点非周期性地反馈CSI的情况下，信息反馈装置，还包括：
第二发送器，配置为向第一通信节点发送DCI信令；DCI信令用于指示第一通信节点反馈CSI的方式。
在一实施例中，SNR变化率包括：一阶SNR变化率。
在一实施例中，SNR变化率还包括：2～n阶SNR变化率，n为大于或等于2的正整数。
在一实施例中，SNR变化率的最大阶数由第二通信节点通过RRC信令、MAC信令或DCI信令配置至第一通信节点；或者，默认SNR变化率的最大阶数为1。
图7是本申请实施例提供的一种通信节点的结构示意图。如图7所示，本申请提供的通信节点，包括：处理器510、存储器520和通信模块530。该通信节点中处理器510的数量可以是一个或者多个，图7中以一个处理器510为例。该通信节点中存储器520的数量可以是一个或者多个，图7中以一个存储器520 为例。该通信节点的处理器510、存储器520和通信模块530可以通过总线或者其他方式连接，图7中以通过总线连接为例。在该实施例中，该通信节点为可以为第一通信节点(比如，用户设备等终端侧)。
存储器520作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请任意实施例的通信节点对应的程序指令/模块(例如，信息反馈装置中的第一接收器302和第一反馈器304)。存储器520可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据通信节点的使用所创建的数据等。此外，存储器520可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器520可包括相对于处理器510远程设置的存储器，这些远程存储器可以通过网络连接至通信节点。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
通信模块530，配置为用于与其它同步节点进行通信交互。
在通信节点为第一通信节点的情况下，上述提供的通信节点可设置为执行上述任意实施例提供的应用于第一通信节点的信息反馈方法，具备相应的功能和效果。
在通信节点为第二通信节点的情况下，上述提供的通信节点可设置为执行上述任意实施例提供的应用于第二通信节点的信息反馈方法，具备相应的功能和效果。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行一种应用于第一通信节点的信息反馈方法，该方法包括：接收第二通信节点发送的下行数据发送指令；根据下行数据发送指令触发第一通信节点向第二通信节点反馈解调能力信息和信道状态信息CSI；CSI包括：接收信号的SNR和SNR变化率。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行一种应用于第二通信节点的信息反馈方法，该方法包括：接收第一通信节点反馈的解调能力信息和CSI；根据解调能力信息和CSI确定每次调度的MCS；CSI包括：接收信号的SNR和SNR变化率。
术语用户设备涵盖任何适合类型的无线用户设备，例如移动电话、便携数据处理装置、便携网络浏览器或车载移动台。
一般来说，本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其 任何组合中实现。例如，一些方面可以被实现在硬件中，而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中，尽管本申请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现，例如在处理器实体中，或者通过硬件，或者通过软件和硬件的组合。计算机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture，ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(Read-Only Memory，ROM)、随机访问存储器(Random Access Memory，RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc，DVD)或光盘(Compact Disk，CD))等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processing，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field-Programmable Gate Array，FPGA)以及基于多核处理器架构的处理器。

Claims (16)

  1. 一种信息反馈方法，应用于第一通信节点，包括：
    接收第二通信节点发送的下行数据发送指令；
    根据所述下行数据发送指令触发所述第一通信节点向所述第二通信节点反馈解调能力信息和信道状态信息CSI；所述CSI包括：接收信号的信噪比SNR和SNR变化率。
  2. 根据权利要求1所述的方法，其中，所述向所述第二通信节点反馈解调能力信息，包括：
    通过无线资源控制RRC信令或介质访问控制MAC信令向所述第二通信节点反馈所述第一通信节点的所述解调能力信息。
  3. 根据权利要求1所述的方法，其中，所述向所述第二通信节点反馈CSI，包括：
    通过物理上行控制信道PUCCH或物理上行共享信道PUSCH向所述第二通信节点反馈所述CSI。
  4. 根据权利要求1所述的方法，其中，所述CSI的反馈方式包括下述之一：周期性的；非周期性的。
  5. 根据权利要求4所述的方法，在周期性地反馈所述CSI的情况下，还包括：
    接收所述第二通信节点通过RRC信令发送的配置参数；
    按照所述配置参数向所述第二通信节点反馈所述CSI。
  6. 根据权利要求4所述的方法，在非周期性地反馈所述CSI的情况下，还包括：
    接收所述第二通信节点发送的下行控制信息DCI信令；
    按照所述DCI信令指示的参数向所述第二通信节点反馈所述CSI。
  7. 根据权利要求1-6中任一项所述的方法，其中，所述SNR变化率包括：一阶SNR变化率。
  8. 根据权利要求7所述的方法，其中，所述SNR变化率还包括：2～n阶SNR变化率，n为大于或等于2的正整数。
  9. 根据权利要求7所述的方法，其中，所述SNR变化率的最大阶数由所述第二通信节点通过RRC信令、MAC信令或DCI信令配置至所述第一通信节点；或者，默认所述SNR变化率的最大阶数为1。
  10. 一种信息反馈方法，应用于第二通信节点，包括：
    接收第一通信节点反馈的解调能力信息和信道状态信息CSI；
    根据所述解调能力信息和所述CSI确定每次调度的调制编码方式MCS；所述CSI包括：接收信号的信噪比SNR和SNR变化率。
  11. 根据权利要求10所述的方法，在所述第一通信节点周期性地反馈所述CSI的情况下，还包括：
    通过无线资源控制RRC信令向所述第一通信节点发送配置参数，所述配置参数用于指示所述第一通信节点反馈所述CSI的方式。
  12. 根据权利要求10所述的方法，在所述第一通信节点非周期性地反馈所述CSI的情况下，还包括：
    向所述第一通信节点发送下行控制信息DCI信令；所述DCI信令用于指示所述第一通信节点反馈所述CSI的方式。
  13. 一种信息反馈装置，应用于第一通信节点，包括：
    第一接收器，配置为接收第二通信节点发送的下行数据发送指令；
    第一反馈器，配置为根据所述下行数据发送指令触发所述第一通信节点向所述第二通信节点反馈解调能力信息和信道状态信息CSI；所述CSI包括：接收信号的信噪比SNR和SNR变化率。
  14. 一种信息反馈装置，应用于第二通信节点，包括：
    接收器，配置为接收第一通信节点反馈的解调能力信息和信道状态信息CSI；
    确定模块，配置为根据所述解调能力信息和所述CSI确定每次调度的调制编码方式MCS；所述CSI包括：接收信号的信噪比SNR和SNR变化率。
  15. 一种通信节点，包括：通信模块，存储器，以及至少一个处理器；
    所述通信模块，配置为在所述通信节点和除所述通信节点外的通信节点之间进行通信交互；
    所述存储器，配置为存储至少一个程序；
    当所述至少一个程序被所述至少一个处理器执行，使得所述至少一个处理器实现如权利要求1-9或权利要求10-12中任一项所述的信息反馈方法。
  16. 一种存储介质，存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1-9或权利要求10-12中任一项所述的信息反馈方法。
PCT/CN2021/079287 2020-05-22 2021-03-05 信息反馈方法、装置、通信节点和存储介质 Ceased WO2021232890A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020227022382A KR102659591B1 (ko) 2020-05-22 2021-03-05 정보 피드백 방법, 장치, 통신 노드 및 저장 매체
JP2022542703A JP7352744B2 (ja) 2020-05-22 2021-03-05 情報フィードバック方法、装置、通信ノード及び記憶媒体
EP21808755.9A EP4156567A4 (en) 2020-05-22 2021-03-05 METHOD AND DEVICE FOR FEEDBACK AND COMMUNICATION NODE AND STORAGE MEDIUM
US17/758,467 US12255848B2 (en) 2020-05-22 2021-03-05 Information feedback method and device, and communication node and storage medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010444214.3A CN111901068B (zh) 2020-05-22 2020-05-22 一种信息反馈方法、装置、通信节点和存储介质
CN202010444214.3 2020-05-22

Publications (1)

Publication Number Publication Date
WO2021232890A1 true WO2021232890A1 (zh) 2021-11-25

Family

ID=73207498

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/079287 Ceased WO2021232890A1 (zh) 2020-05-22 2021-03-05 信息反馈方法、装置、通信节点和存储介质

Country Status (6)

Country Link
US (1) US12255848B2 (zh)
EP (1) EP4156567A4 (zh)
JP (1) JP7352744B2 (zh)
KR (1) KR102659591B1 (zh)
CN (1) CN111901068B (zh)
WO (1) WO2021232890A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230005836A (ko) * 2020-05-04 2023-01-10 퀄컴 인코포레이티드 랜덤 액세스 채널로 초기 채널 상태 정보 보고
CN111901068B (zh) * 2020-05-22 2024-07-30 中兴通讯股份有限公司 一种信息反馈方法、装置、通信节点和存储介质
US12549282B2 (en) * 2022-05-20 2026-02-10 Qualcomm Incorporated Pruning DCI for NR BWP switching
CN120934957A (zh) * 2024-05-09 2025-11-11 中兴通讯股份有限公司 信息传输的方法、系统、电子设备及存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103201963A (zh) * 2010-10-26 2013-07-10 高通股份有限公司 用于极高吞吐量无线系统的信道状态信息反馈帧格式和反馈规则
US9203589B1 (en) * 2012-10-05 2015-12-01 Marvell International Ltd. Estimation of channel state information (CSI) feedback using interpolation
CN110831072A (zh) * 2019-10-28 2020-02-21 普联技术有限公司 一种基于wlan的mcs选择方法及系统
CN111901068A (zh) * 2020-05-22 2020-11-06 中兴通讯股份有限公司 一种信息反馈方法、装置、通信节点和存储介质

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8451915B2 (en) * 2007-03-21 2013-05-28 Samsung Electronics Co., Ltd. Efficient uplink feedback in a wireless communication system
US8310981B2 (en) * 2008-10-22 2012-11-13 Qualcomm Incorporated Common and dedicated modulation and coding scheme for a multicarrier system
CN102480761B (zh) 2010-11-26 2016-04-06 北京大学 Lte调度中确定mcs的方法
US9294165B2 (en) * 2011-04-19 2016-03-22 Panasonic Intellectual Property Corporation Of America Signal generating method and signal generating device
WO2012144202A1 (ja) * 2011-04-19 2012-10-26 パナソニック株式会社 中継方法、中継装置
CN102916785B (zh) * 2011-08-04 2017-04-12 华为技术有限公司 信息反馈方法、用户设备和基站
CN103152754B (zh) 2013-03-12 2015-11-25 京信通信系统（中国）有限公司 一种lte系统中的链路自适应方法及装置
CN104956613B (zh) * 2013-03-15 2016-11-02 华为技术有限公司 一种发送设备和接收设备参数的调整方法及终端设备
KR102508150B1 (ko) 2015-06-17 2023-03-09 엘지전자 주식회사 비주기적 채널 상태 정보-참조 신호를 이용한 채널 상태 보고를 위한 방법 및 이를 위한 장치
CN115189727B (zh) * 2015-07-10 2024-06-07 交互数字专利控股公司 针对ofdma wlan的统一反馈
CN107710721B (zh) * 2015-08-21 2020-02-14 华为技术有限公司 一种信息处理方法、装置和系统
US11063717B2 (en) 2016-08-08 2021-07-13 Lg Electronics Inc. Channel state information transmitting method and user equipment, and channel state information receiving method and base station
US10938537B2 (en) 2017-05-05 2021-03-02 Qualcomm Incorporated Techniques and apparatuses for channel state information feedback performance for introduction of 64-QAM in machine type communication devices
US11184106B2 (en) * 2018-02-01 2021-11-23 Qualcomm Incorporated Modulation table determination and channel quality indicator reporting
US11166238B2 (en) * 2018-09-13 2021-11-02 Qualcomm Incorporated Methods and apparatus for supporting multiple power and spectrum efficient modes for power saving
US11374638B2 (en) 2018-10-05 2022-06-28 Qualcomm Incorporated Channel quality indicator report based on demodulation reference signal
CN116133141A (zh) * 2019-01-25 2023-05-16 中兴通讯股份有限公司 无线通信中的信道状态评估和上报方案
CN110535611B (zh) 2019-08-14 2025-02-11 中兴通讯股份有限公司 信号发送、接收、信息反馈方法、装置、通信节点及介质

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103201963A (zh) * 2010-10-26 2013-07-10 高通股份有限公司 用于极高吞吐量无线系统的信道状态信息反馈帧格式和反馈规则
US9203589B1 (en) * 2012-10-05 2015-12-01 Marvell International Ltd. Estimation of channel state information (CSI) feedback using interpolation
CN110831072A (zh) * 2019-10-28 2020-02-21 普联技术有限公司 一种基于wlan的mcs选择方法及系统
CN111901068A (zh) * 2020-05-22 2020-11-06 中兴通讯股份有限公司 一种信息反馈方法、装置、通信节点和存储介质

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ANRITSU: "MU factors contributing to DL SNR for demodulation and CSI", 3GPP DRAFT; R4-1811777 SNR MU ELEMENTS, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG4, no. Gothenburg, Sweden; 20180820 - 20180824, 29 August 2018 (2018-08-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051580622 *
See also references of EP4156567A4 *

Also Published As

Publication number Publication date
US20230038330A1 (en) 2023-02-09
CN111901068B (zh) 2024-07-30
JP7352744B2 (ja) 2023-09-28
CN111901068A (zh) 2020-11-06
EP4156567A4 (en) 2024-06-26
KR102659591B1 (ko) 2024-04-23
US12255848B2 (en) 2025-03-18
JP2023510357A (ja) 2023-03-13
KR20220106821A (ko) 2022-07-29
EP4156567A1 (en) 2023-03-29

Similar Documents

Publication Publication Date Title
CN104980247B (zh) 自适应调整调制编码方式和参考信号图样的方法、基站、终端和系统
CN107615693B (zh) 用于上行链路无授权随机接入中的链路自适应的装置和方法
WO2021232890A1 (zh) 信息反馈方法、装置、通信节点和存储介质
US10958372B2 (en) Radio link adaptation in communication systems
EP4079071A1 (en) Error probability assisted link adaptation
US8531982B1 (en) Quality of service aware channel quality indicator
US20210099270A1 (en) Resource Indicating Method, Device, And System
WO2022236635A1 (zh) 信道状态信息的上报方法及装置、终端设备、网络设备
WO2022223115A1 (en) Dynamic pucch format configuration using machine learning
CN110651439A (zh) 客户端设备，网络节点及其方法
EP3465958B1 (en) Outer-loop adjustment for link adaptation
JP2018518903A (ja) Ｃｓｉ−ｒｓによって生成される干渉の予測を用いたアウターループリンク適応
EP3140941B1 (en) Determining a rate at which units of data are received erroneously
WO2022090766A1 (en) Pucch link adaptation using bandwidth-part switching
US12507179B2 (en) Wireless communication systems for dynamically scaling power of synchronization signal block and channel state information reference signal
US12550076B2 (en) Wireless communication systems for dynamically scaling power of synchronization signal block and channel state information reference signal
WO2021240212A1 (en) Load-aware variable periodic resource allocation
CN109076462B (zh) 用于无线设备的覆盖范围扩展
CN114501622B (zh) 一种传输处理方法及装置
US20240250994A1 (en) Reporting of delta channel quality indicator (cqi)-modulation and coding scheme (mcs) information
WO2025067680A1 (en) Control channel quality reporting and link adaptation
WO2025233466A1 (en) Methods, infrastructure equipment, and communications devices
WO2023033688A1 (en) Methods and apparatus for determining transmission parameters

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21808755

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20227022382

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2022542703

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2021808755

Country of ref document: EP

Effective date: 20221222

NENP Non-entry into the national phase

Ref country code: DE

WWG Wipo information: grant in national office

Ref document number: 17758467

Country of ref document: US