CN117256190A

CN117256190A - Information feedback method, device, equipment and storage medium

Info

Publication number: CN117256190A
Application number: CN202180097434.6A
Authority: CN
Inventors: 张轶; 徐婧
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2023-12-19
Also published as: WO2023004718A1

Abstract

The application provides an information feedback method, an information feedback device, information feedback equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: the terminal equipment sends first feedback information to the network equipment, wherein the first feedback information is obtained based on a reference MCS; wherein the reference MCS corresponds to the first PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by the communication protocol. The method and the device are beneficial to reducing the calculation time delay and the power consumption of the information related to the channel state obtained by the terminal equipment, meanwhile, the CSI-RS resources are saved, so that the communication system has more resources to transmit downlink data, and the network capacity is improved.

Description

Information feedback method, device, equipment and storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to an information feedback method, an information feedback device, information feedback equipment and a storage medium.

Background

CSI (Channel State Information ) refers to information used to estimate the channel characteristics of a communication link. The network device can determine the modulation scheme, the channel coding rate and the like of the downlink data based on the CSI reported by the terminal device, so as to improve the transmission reliability and the transmission efficiency of the downlink data.

Currently, in related technologies of an NR (New Radio) system, CSI is obtained and reported to a network device based on measurement of a CSI-RS (CSI Reference Signals, CSI reference signal) resource by a terminal device, and specifically, CSI reporting is divided into: periodically reporting the CSI, semi-continuously reporting the CSI and aperiodically reporting the CSI. In some implementations, in order to satisfy both the low latency and high reliability characteristics of the URLLC (Ultra-Reliable and Low Latency Communication, low latency and high reliability communication) service, the terminal device is required to report more accurate channel state information reflecting the channel quality, so as to assist the network device in better performing initial transmission and/or retransmission scheduling.

In order to meet the requirements of low time delay and high reliability of URLLC service and simultaneously improve the transmission efficiency of the system, a novel channel state information is provided. Further discussion and study is needed as to how to obtain the new channel state information.

Disclosure of Invention

The embodiment of the application provides an information feedback method, an information feedback device, information feedback equipment and a storage medium. The technical scheme is as follows:

in one aspect, an embodiment of the present application provides an information feedback method, where the method includes:

The method comprises the steps that terminal equipment sends first feedback information to network equipment, wherein the first feedback information is obtained based on a reference Modulation and Coding Strategy (MCS);

wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.

In another aspect, an embodiment of the present application provides an information feedback method, where the method includes:

the network equipment receives first feedback information sent by the terminal equipment, wherein the first feedback information is obtained based on a reference Modulation and Coding Strategy (MCS);

In still another aspect, an embodiment of the present application provides an information feedback apparatus, including:

the information sending module is used for sending first feedback information to the network equipment by the terminal equipment, wherein the first feedback information is obtained based on a reference Modulation and Coding Strategy (MCS);

In yet another aspect, an embodiment of the present application provides an information feedback apparatus, including:

the information receiving module is used for receiving first feedback information sent by the terminal equipment by the network equipment, wherein the first feedback information is obtained based on a reference Modulation and Coding Strategy (MCS);

In yet another aspect, an embodiment of the present application provides a terminal device, including: a processor, and a transceiver coupled to the processor; wherein:

the transceiver is configured to send first feedback information to the network device by the terminal device, where the first feedback information is obtained based on a reference modulation and coding scheme MCS;

In yet another aspect, an embodiment of the present application provides a network device, including: a processor, and a transceiver coupled to the processor; wherein:

The transceiver is configured to receive, by using a network device, first feedback information sent by a terminal device, where the first feedback information is obtained based on a reference modulation and coding scheme MCS;

In yet another aspect, an embodiment of the present application provides a computer readable storage medium, where a computer program is stored, where the computer program is configured to be executed by a processor of a terminal device to implement an information feedback method on a terminal device side as described above.

In yet another aspect, embodiments of the present application provide a computer readable storage medium having a computer program stored therein, where the computer program is configured to be executed by a processor of a network device to implement an information feedback method on a network device side as described above.

In yet another aspect, an embodiment of the present application provides a chip, where the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a terminal device, the chip is configured to implement an information feedback method on a terminal device side as described above.

In yet another aspect, an embodiment of the present application provides a chip, where the chip includes a programmable logic circuit and/or program instructions, and when the chip is running on a network device, the chip is configured to implement an information feedback method on a network device side as described above.

In yet another aspect, an embodiment of the present application provides a computer program product for implementing an information feedback method on a terminal device side as described above when the computer program product is run on the terminal device.

In yet another aspect, embodiments of the present application provide a computer program product for implementing an information feedback method on a network device side as described above when the computer program product is run on the network device.

The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:

the terminal equipment determines feedback information based on the reference MCS and reports the feedback information to the network equipment so as to indicate the channel quality and/or the channel characteristic of the communication link to the network equipment, and the reference MCS corresponds to the PDSCH or is configured by the network equipment or predefined by the communication protocol, so that additional measurement resources and measurement time for the communication link are not needed, the calculation time delay and the power consumption of the terminal equipment for obtaining the information related to the channel state are reduced, meanwhile, the CSI-RS resources are saved, the communication system has more resources for transmitting downlink data, and the network capacity is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of DAI indications provided by one embodiment of the present application;

FIG. 2 is a schematic diagram of a communication system provided in one embodiment of the present application;

FIG. 3 is a flow chart of an information feedback method provided by one embodiment of the present application;

fig. 4 is a schematic diagram of at least one PDSCH provided by an embodiment of the present application;

FIG. 5 is a block diagram of an information feedback device provided in one embodiment of the present application;

FIG. 6 is a block diagram of an information feedback device provided in another embodiment of the present application;

FIG. 7 is a block diagram of an information feedback device provided in accordance with yet another embodiment of the present application;

FIG. 8 is a block diagram of an information feedback device provided in accordance with yet another embodiment of the present application;

fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

First, some nouns and related technologies and the like referred to in the embodiments of the present application are briefly described.

1. Channel State Information (CSI).

CSI refers to information used to estimate the channel characteristics of a communication link. The network device can determine the modulation scheme, the channel coding rate and the like of the downlink data based on the CSI reported by the terminal device, so as to improve the transmission reliability and the transmission efficiency of the downlink data.

In the NR system, the CSI is acquired based on measurement of the CSI-RS resource by the terminal equipment and is reported to the network equipment. The reporting of the CSI is divided into: periodically reporting the CSI, semi-continuously reporting the CSI and aperiodically reporting the CSI.

And periodically reporting CSI: the network device configures a period and an offset for reporting CSI for the terminal device through RRC (Radio Resource Control ) signaling, and after the terminal device receives the RRC signaling, the terminal device periodically reports CSI on a PUCCH (Physical Uplink Control Channel ) configured by the network device.

Semi-persistent reporting CSI: under the condition that the terminal equipment reports the CSI semi-continuously through the PUCCH, the network equipment activates/deactivates the reporting of the CSI through a Media Access Control (MAC) CE signaling, and after the reporting of the CSI is activated by the MAC CE signaling, the terminal equipment periodically reports the CSI on the PUCCH; under the condition that the terminal equipment reports the CSI semi-continuously through a PUSCH (Physical Uplink Shared Channel ), the network equipment activates/deactivates the reporting of the CSI through DCI (Downlink Control Information ), and after the reporting of the CSI is activated by the DCI, the terminal equipment periodically reports the CSI on the PUSCH.

Aperiodic reporting of CSI: the network equipment triggers the reporting of the CSI through the DCI, and the terminal equipment only reports the CSI once on the PUSCH indicated by the DCI after receiving the DCI.

In some implementations, the channel/interference measurement resources used to report CSI at slot n (slot n) cannot be later than the CSI reference resource slots n-n _CSI-ref . For periodic and semi-persistent reporting of CSI, when only one CSI-RS is configured for channel measurement resources, n _CSI-ref Needs to be greater thanFor aperiodic reporting of CSI, n _CSI-ref It needs to be greater than the CSI computation time, which is much greater than the PDSCH decoding time.

2. Physical layer priority.

In the NR system, in order to better support the URLLC service, a high priority and a low priority are introduced in the physical layer for the uplink channel. Wherein, priority index 0 (priority index is 0) indicates a low priority, and priority index 1 (priority index is 1) indicates a high priority. The terminal device may determine the priority index of the uplink channel (uplink channel includes PUSCH and PUCCH) according to the configuration information and/or the indication information of the network device.

3. HARQ (Hybrid Automatic Repeat Request ) -ACK (Acknowledgement) codebook.

The NR system supports two HARQ-ACK codebooks: type-1 HARQ-ACK codebook (Type 1 HARQ-ACK codebook) and Type-2 HARQ-ACK codebook (Type 2 HARQ-ACK codebook).

Type-1 HARQ-ACK codebook: and determining the bit number of the HARQ-ACK information corresponding to the PDSCH in a semi-static mode. Namely: the downlink resources (i.e., candidate PDSCH receiver opportunities) available for transmitting PDSCH are determined by communication protocol predefining, or by semi-static configuration information of the network device (e.g., time domain resource allocation table (time domain resource allocation table), K1set (first time slot timing set), etc.), and HARQ-ACK feedback bits are reserved for each candidate PDSCH receiver opportunity determined semi-statically. The method has the advantages that the inconsistent understanding of the terminal equipment and the network equipment on the HARQ-ACK codebook size caused by the fact that the terminal equipment fails to detect the PDCCH (Physical Downlink Control Channel) can be avoided, and the situation that the network equipment cannot correctly demodulate the HARQ-ACK codebook sent by the terminal equipment is avoided. The disadvantage of this approach is that the feedback overhead is large, i.e. the candidate PDSCH receiver does not necessarily actually have PDSCH transmissions.

Type-2 HARQ-ACK codebook: the number of bits of the HARQ-ACK codebook is determined in a dynamic manner. That is, the terminal device determines the number of HARQ-ACK feedback bits required for the actual scheduled PDSCH and/or the SPS (Semi-Persistent Scheduling ) PDSCH according to the received DCI. Optionally, in order to cope with the problem of missed detection of the remaining PDCCHs except the last PDCCH, a DAI (Downlink Assignment Index, downlink allocation index) indication is introduced. Referring to fig. 1, a schematic diagram of DAI indication provided in an embodiment of the present application is shown. As shown in fig. 1, the network device sends PDSCH 1 to PDSCH 4, respectively corresponding dai=1 to 4, and the terminal device fails to receive PDSCH 3 due to missed detection of PDCCH scheduling PDSCH 3, but the terminal device receives PDSCH 4, and the corresponding dai=4, the terminal device can determine that it has missed detection of PDSCH 3, and feed back 4-bit HARQ-ACK to the network device.

4. MCS (Modulation and Coding Scheme, modulation and coding strategy) table.

Both the uplink and downlink of the NR system support 3 MCS tables of 256QAM (Quadrature Amplitude Modulation ), 64QAM and lowSE64QAM, respectively.

At the beginning of NR system design, only two MCS tables of 256QAM and 64QAM are supported, the target BLER (Block Error Rate) is 1e-1, and the purpose is to support eMBB (Enhanced Mobile Broadband ) service, and later, in order to better support URLLC service, a lowSE64QAM MCS table is designed, and the target BLER is 1e-5.

Illustratively, as shown in Table one below, a 64QAM MCS table (MCS index configuration information) is shown. When the MCS index is 0 to 28, the Modulation Order (Modulation Order), the Code Rate (Target Code Rate) and the spectrum efficiency (Spectral Efficiency) indicated by the MCS index can be used for primary transmission scheduling and retransmission scheduling; when the MCS index is 29 to 31, the indication content corresponding to the modulation order, the code rate and the spectrum efficiency indicated by the MCS index is "reserved", and the method can be used for retransmission scheduling.

Table one MCS index configuration information

In order to satisfy the two characteristics of low latency and high reliability of the URLLC service (for example, ensure that the transmission times of the URLLC service within the allowable range of latency can reach the reliability requirement), the terminal device is required to report more accurate channel state information reflecting the channel quality, so as to assist the network device in performing primary transmission and/or retransmission scheduling better. In one example, reporting more accurate channel state information may be achieved in the following manner.

(1) The periodic configuration of reporting CSI periodically/semi-continuously is very short;

(2) Aperiodic reporting of CSI is triggered using DCI.

Aiming at the mode (1), the network equipment is required to transmit the CSI-RS resources in a high density manner so as to obtain the rapidly updated channel state information, so that the expenditure of reference signals (CSI-RS resources) of the system is increased, and the expenditure of measurement and calculation of the terminal equipment is increased. Meanwhile, due to the influence of the CSI measurement time, the CSI reported by the terminal equipment needs to be obtained based on the CSI-RS measurement before the CSI reference resource, for the periodical/semi-persistent CSI reported in the Uplink time slot n, the CSI reference resource is the CSI-RS transmitted in the time slot n-4/n-5 at the earliest (supposing that the UL (Uplink) and the DL (Downlink) have the same subcarrier interval and only one CSI-RS resource is configured for channel measurement), and the interference condition of the terminal equipment is greatly affected by the scheduling of the adjacent cells, and due to the long measurement time, the interference possibly suffered by the terminal equipment when reporting the CSI is changed, so that the CSI is inaccurate.

Aiming at the mode (2), the network equipment needs to send DCI to trigger the sending of the CSI-RS and the reporting of the CSI, on one hand, the DCI used for triggering the reporting of the CSI can only be the DCI (UL DCI) for scheduling the PUSCH, and the terminal equipment can have asymmetric uplink and downlink service and has no uplink service requirement, and under the condition, the UL DCI is wasted for triggering the reporting of the CSI; on the other hand, for aperiodic CSI reporting, the processing time from receiving UL DCI to transmitting CSI by the terminal device is long, and for the service with urgent delay, if the initial transmission is wrong and the delay requirement cannot tolerate CSI reporting, the network device can only use a very conservative MCS to schedule, resulting in a decrease in the transmission efficiency of the system.

In order to meet the requirements of low latency and high reliability of URLLC traffic while improving system transmission efficiency, channel state information based on demodulation and/or measurement of PDSCH, or "reporting of delta MCS (reporting of MCS difference)", is proposed. Where delta MCS is the difference between the target MCS and the reference MCS, the target MCS is the maximum MCS such that the prediction BLER (estimated BLER) of the TB (Transport Block) received using the MCS is less than or equal to the target BLER. Because the channel state information is obtained based on the demodulation and/or measurement of the PDSCH, no extra measurement resources and no extra measurement time are needed, the calculation time delay and the power consumption for obtaining the channel state information by the terminal equipment can be reduced based on the demodulation and/or the measurement of the PDSCH, and meanwhile, the CSI-RS resources can be saved, so that the system has more resources to transmit downlink data, and the network capacity is improved.

However, if channel state information is calculated and reported for each PDSCH, reporting overhead will be greatly increased. How to balance reporting overhead with accuracy of channel state information reporting has not been mentioned and discussed. Based on this, the embodiment of the application provides an information feedback method, which can be used for solving the technical problems.

In the following, the technical solutions of the present application will be described in connection with several embodiments.

Referring to fig. 2, a schematic diagram of a communication system according to an embodiment of the present application is shown. The communication system may include: a terminal device 10 and a network device 20.

The number of terminal devices 10 is typically plural, and one or more terminal devices 10 may be distributed within a cell managed by each network device 20. The terminal device 10 may include various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of User Equipment (UE), mobile Station (MS), and the like, having wireless communication capabilities. For convenience of description, in the embodiment of the present application, the above-mentioned devices are collectively referred to as a terminal device.

The network device 20 is a means deployed in the access network to provide wireless communication functionality for the terminal device 10. The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. The names of network device-capable devices may vary in systems employing different radio access technologies, for example in 5G (5 th-Generation, fifth Generation mobile communication technology) NR systems, called gndeb or gNB. As communication technology evolves, the name "network device" may change. For convenience of description, in the embodiment of the present application, the above-mentioned devices for providing the terminal device 10 with the wireless communication function are collectively referred to as a network device.

Optionally, the network device 20 and the terminal device 10 communicate with each other via some air interface technology, such as Uu interface.

The "5G NR system" in the embodiments of the present application may also be referred to as a 5G system or an NR system, but a person skilled in the art may understand the meaning thereof.

It should be understood that the technical solution of the embodiments of the present application may be applied to various communication systems, for example: a long term evolution (Long Term Evolution, LTE) system, a LTE frequency division duplex (Frequency Division Duplex, FDD) system, a LTE time division duplex (Time Division Duplex, TDD) system, a long term evolution advanced (Advanced Long Term Evolution, LTE-a) system, a NR system, an evolution system of a NR system, a LTE-based access to Unlicensed spectrum, LTE-U, an NR-U, wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), a next generation communication system, or other communication system over an Unlicensed frequency band, and the like.

Referring to fig. 3, a flowchart of an information feedback method according to an embodiment of the present application is shown, and the method may be applied to the communication system shown in fig. 2. The method may comprise at least part of the following steps.

Step 310, the terminal device sends first feedback information to the network device, wherein the first feedback information is obtained based on a reference MCS; wherein the reference MCS corresponds to the first PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by the communication protocol.

The first feedback information is used to estimate a channel quality and/or a channel characteristic of the communication link. In this embodiment of the present application, the first feedback information corresponds to at least one PDSCH, in other words, the first feedback information reflects channel quality and/or channel characteristics of the at least one PDSCH.

It will be appreciated that the name "first feedback information" may vary, for example, the "first feedback information" may also be referred to as "channel state information", or as "new channel state information", or as "reporting of delta MCS (reporting of MCS difference), or as" case-2reporting ". For convenience of description, information for estimating channel quality and/or channel characteristics of a communication link corresponding to at least one PDSCH will be collectively referred to as "first feedback information".

The content of the first feedback information is not limited, and optionally, the first feedback information includes channel state information obtained based on demodulation and/or measurement of at least one PDSCH; alternatively, the first feedback information includes a first difference value, which is a difference value between the target MCS and the reference MCS. Wherein the target MCS is an MCS determined based on the at least one PDSCH; the reference MCS is an MCS corresponding to the first PDSCH of the at least one PDSCH, or the reference MCS is an MCS configured by the network device, or the reference MCS is an MCS predefined by the communication protocol. Optionally, the MCS corresponding to the first PDSCH is an MCS included in DCI for scheduling the first PDSCH.

In one example, the number of at least one PDSCH is k, k is equal to 1 or k is an integer greater than 1, and the terminal device determines the target MCS based on the k PDSCH. Optionally, the target MCS is obtained based on k intermediate target MCSs, and an i-th intermediate target MCS in the k intermediate target MCSs is obtained based on an i-th PDSCH in the k PDSCHs, where i is a positive integer less than or equal to k. In other words, the terminal device determines k intermediate target MCSs based on k PDSCHs, and then determines a target MCS based on k intermediate target MCSs. Wherein the intermediate target MCS is a maximum MCS such that a predicted BLER of a TB received using the MCS is less than or equal to the target BLER. Optionally, the terminal device determines k intermediate target MCSs based on the same target BLER. It should be understood that in case k is equal to 1, the terminal device determines the target MCS based on one PDSCH, and the target MCS is the intermediate target MCS of the one PDSCH.

The method for determining the target MCS by the terminal device based on the k intermediate target MCSs in the embodiment of the present application is not limited, and in one example, the target MCS is any one of the following: a minimum value of k intermediate target MCSs, an average value of k intermediate target MCSs, and a maximum value of k intermediate target MCSs. Optionally, in the case that the average value of the k intermediate target MCSs is a non-integer, the terminal device performs rounding processing on the average value of the k intermediate target MCSs to obtain the target MCS, where the rounding processing includes, but is not limited to: rounding, rounding up, rounding down.

As can be seen from the above description, in some implementations, the reference MCS is an MCS corresponding to a first PDSCH of the at least one PDSCH. Based on this, the terminal device needs to determine the first PDSCH from the at least one PDSCH and then determine the reference MCS based on the information related to the first PDSCH. In one example, the first PDSCH includes any one of the following: the method includes the steps of nearest PDSCH in at least one PDSCH, nearest primary PDSCH in at least one PDSCH, primary PDSCH corresponding to nearest PDSCH in at least one PDSCH, PDSCH with minimum MCS corresponding to at least one PDSCH, and PDSCH with maximum MCS corresponding to at least one PDSCH. Optionally, the PDSCH with the smallest MCS corresponding to the at least one PDSCH and/or the PDSCH with the largest MCS corresponding to the at least one PDSCH do not include the PDSCH with the reserved indication content corresponding to the corresponding MCS.

Illustratively, at least one PDSCH is PDSCH 1, PDSCH 2, PDSCH 3, and PDSCH 4, and their corresponding MCSs are 3, 4, 5, 4, respectively; wherein, PDSCH 1, PDSCH 2 and PDSCH 3 are primary transmissions, PDSCH 4 is retransmission, and the primary transmission PDSCH corresponding to PDSCH 4 is PDSCH 0. Then, if the first PDSCH includes the nearest PDSCH of the at least one PDSCH, the first PDSCH is PDSCH 4; if the first PDSCH is the latest primary PDSCH in the at least one PDSCH, the first PDSCH is PDSCH 3; if the first PDSCH is the primary PDSCH corresponding to the nearest PDSCH in the at least one PDSCH, the first PDSCH is PDSCH 0; if the first PDSCH is the PDSCH with the minimum MCS corresponding to at least one PDSCH, the first PDSCH is PDSCH 1; if the first PDSCH is the PDSCH with the largest MCS corresponding to the at least one PDSCH, the first PDSCH is PDSCH 2.

For example, the at least one PDSCH is PDSCH 1, PDSCH 2, PDSCH 3, and PDSCH 4, and the terminal device determines the first feedback information based on the PDSCH 1 to PDSCH 4. When the terminal device determines the target MCS based on the PDSCH 1 to PDSCH 4, the terminal device determines the intermediate target MCS corresponding to the PDSCH 1 to PDSCH 4 respectively based on the same target BLER (e.g., the BLER of 1 e-5), and obtains the intermediate target MCS corresponding to the PDSCH 1 to PDSCH 4 as 4, 5, 4, and 3 respectively. If the target MCS is the minimum value of the intermediate target MCS corresponding to PDSCH 1 to PDSCH 4, the target MCS is 3; if the target MCS is an average value of intermediate target MCSs corresponding to PDSCH 1 through PDSCH 4, the target MCS is 4. Assuming that MCSs corresponding to PDSCH 1 to PDSCH 4 are 3, 4, 5, and 4, respectively, and reference MCS is an MCS corresponding to one PDSCH of PDSCH 1 to PDSCH 4, if reference MCS is an MCS corresponding to a PDSCH having the largest MCS corresponding to one PDSCH 1 to PDSCH 4, reference MCS is 5 (an MCS corresponding to PDSCH 3); if the reference MCS is the MCS corresponding to the nearest PDSCH among PDSCH 1 to PDSCH 4, the reference MCS is 4 (MCS corresponding to PDSCH 4). Further, the terminal device determines the first feedback information based on a difference between the target MCS and the reference MCS. For example, the first feedback information includes delta MCS, if the target MCS is 3 and the reference MCS is 5, delta mcs=3-5= -2; if the target MCS is 4 and the reference MCS is 4, delta mcs=4-4=0.

In the embodiment of the present application, the determination of the first feedback information also needs to be determined based on an assumed TB size. Based on this, in one example, the first feedback information is derived based on the first TB. Since the first feedback information corresponds to the at least one PDSCH, optionally, the size of the first TB is obtained based on the first PDSCH of the at least one PDSCH or the size of the first TB is obtained based on the at least one PDSCH. For example, in case that the size of the first TB is obtained based on the first PDSCH, the size of the first TB is obtained based on information related to the first PDSCH at least one of: the method comprises the steps of target MCS and physical resource block PRB occupied by a first PDSCH, wherein the target MCS is obtained based on the first PDSCH; in case that the size of the first TB is obtained based on at least one PDSCH, the size of the first TB is obtained based on at least one of the following information related to the at least one PDSCH: a target MCS, PRBs occupied by at least one PDSCH, the target MCS being derived based on the at least one PDSCH. For description of the determination method of the first PDSCH, the calculation method of the target MCS, etc., please refer to the description of the above embodiments, and the description is omitted here.

After obtaining the first feedback information, the terminal device may send the first feedback information to the network device, so as to indicate the channel quality and/or the channel characteristic of the communication link to the network device, thereby providing a reference for downlink transmission and the like for the network device. Optionally, the terminal device sends the first feedback information to the network device through the PUCCH resource. The reporting manner of the first feedback information is not limited in the embodiment of the present application. In an example, when the terminal device sends the first feedback information to the network device, the terminal device reports the first feedback information as separate uplink information to the network device, where the terminal device may report the first feedback information and other uplink information (such as HARQ-ACK codebook) at the same time, or may not report the first feedback information and other uplink information (such as HARQ-ACK codebook) at the same time. In another example, the terminal device combines the first feedback information with other uplink information (e.g., HARQ-ACK codebook) and reports the combined first feedback information to the network device. For other description of the terminal device sending the first feedback information to the network device, please refer to the following embodiments, which are not repeated here.

In summary, according to the technical scheme provided by the embodiment of the application, the feedback information is determined based on the reference MCS by the terminal device, and the feedback information is reported to the network device, so that the channel quality and/or the channel characteristic of the communication link are indicated to the network device, and because the reference MCS is the MCS corresponding to the PDSCH or the MCS predefined by the network device, no additional measurement resource and measurement time for the communication link are needed, the calculation time delay and the power consumption of the terminal device for obtaining the information related to the channel state are reduced, and meanwhile, the CSI-RS resource is saved, so that the communication system has more resources for transmitting downlink data, and the network capacity is improved. In addition, in the embodiment of the application, the feedback information reported by the terminal equipment corresponds to at least one PDSCH, so that the reporting cost of the feedback information is reduced.

Next, a description will be given of a manner of determining at least one PDSCH.

In one example, the first PDSCH includes any one of the following: the latest PDSCH before the first time, the latest primary PDSCH before the first time, and the primary PDSCH corresponding to the latest PDSCH before the first time.

As can be seen from the above embodiments, the first PDSCH is a PDSCH of the at least one PDSCH (or the first PDSCH is included in the at least one PDSCH), and the first PDSCH may include any one of the following: the nearest PDSCH of the at least one PDSCH, the nearest primary PDSCH of the at least one PDSCH, and the primary PDSCH corresponding to the nearest PDSCH of the at least one PDSCH. In connection with this example, the first PDSCH includes any one of the following: the PDSCH nearest before the first time, and the PDSCH corresponding to the PDSCH nearest before the first time may be known that at least one PDSCH is the PDSCH before the first time.

In this embodiment of the present application, the first time unit or the last time unit of the transmission resource for carrying the first feedback information is the second time, and the first time is earlier than or equal to (or may be no later than) the second time. Optionally, the time unit includes any one of: symbols, slots, sub-slots, etc. That is, at least one PDSCH is a PDSCH before a start transmission time of the first feedback information (a first time unit of a transmission resource for carrying the first feedback information), or at least one PDSCH is a PDSCH before an end transmission time of the first feedback information (a last time unit of a transmission resource for carrying the first feedback information).

The first time being earlier than or equal to the second time includes that the first time is earlier than the second time or that the first time is equal to the second time. In the case that the first time is earlier than the second time, optionally, the duration between the first time and the second time is equal to the processing duration of the PDSCH or greater than the processing duration of the PDSCH. If the duration between the first time and the second time is smaller than the processing duration of one PDSCH, the terminal device reports the first feedback information or ends reporting the first feedback information, and the latest PDSCH is not processed yet, so that the first feedback information cannot reflect the channel quality and/or the channel characteristics corresponding to the PDSCH. Therefore, the at least one PDSCH corresponding to the first feedback information should be a PDSCH that has been processed by the terminal device to ensure that channel quality and/or channel characteristics are accurately indicated, so that a duration between the first time and the second time is greater than or equal to a processing duration of one PDSCH.

To ensure that channel quality and/or channel characteristics are indicated in real time, in one example, at least one PDSCH includes PDSCH that is equal to or later (or may not be earlier) than (i.e., at least one PDSCH is PDSCH that is after (may also include) the third time. Wherein the third time is earlier than or equal to the first time. The determining manner of the third time is not limited, and optionally, the duration between the third time and the first time is the first duration, that is, the third time is the time spaced by the first duration before the first time; alternatively, the time period between the third time and the second time is the second time period, that is, the third time is a time period before the second time period by the second time period.

In combination with the description of the PDSCH before the first time point regarding the at least one PDSCH, it can be seen that the at least one PDSCH is a PDSCH in the first time period, the starting time of the first time period is a third time point, and the ending time of the first time period is a first time point; alternatively, at least one PDSCH may be said to be a PDSCH equal to or later than the third time and earlier than or equal to the first time. Based on this, the first PDSCH further includes any one of: PDSCH with the smallest MCS among PDSCH equal to or later than the third time and earlier than or equal to the first time, PDSCH with the largest MCS among PDSCH equal to or later than the third time and earlier than or equal to the first time. For example, as shown in fig. 4, if the terminal device needs to start reporting the first feedback information at the second time, the terminal device determines that at least one PDSCH corresponding to the first feedback information is PDSCH 3 to PDSCH 5. As shown in fig. 4, at least one PDSCH is a PDSCH between a third time and a first time, where a duration between the third time and the first time is a first duration, a duration between the third time and the second time is a second duration, and the duration between the first time and the second time is equal to a processing duration of the PDSCH. As shown in fig. 4, since the duration between the PDSCH 1 and the PDSCH 2 before the third time and the reporting time of the first feedback information is too long, feedback of the corresponding channel quality and/or channel characteristics is already non-real-time, so at least one PDSCH does not include the PDSCH 1 and the PDSCH 2; since the PDSCH 6 is located between the first time and the second time, when the terminal device reports the first feedback information, the PDSCH 6 is not processed yet, that is, the channel quality and/or the channel characteristic corresponding to the PDSCH 6 cannot be fed back in the first feedback information, so that at least one PDSCH also does not include the PDSCH 6.

In one example, the first PDSCH is a PDSCH of the at least one PDSCH (or the first PDSCH is included in the at least one PDSCH); the at least one PDSCH includes any one of: PDSCH corresponding to the first HARQ-ACK codebook; among the PDSCHs corresponding to the first HARQ-ACK codebook, corresponding PDSCHs with the same serving cell index.

For the received PDSCH, the terminal device needs to feed back HARQ-ACK information corresponding to the PDSCH to the network device, so as to indicate to the network device whether the PDSCH is correctly received. Based on this, in one example, the at least one PDSCH includes a PDSCH corresponding to the first HARQ-ACK codebook. The Type of the first HARQ-ACK codebook is not limited, and the first HARQ-ACK codebook may be the Type-1 HARQ-ACK codebook or the Type-2 HARQ-ACK codebook. In the embodiment of the present application, the PDSCH corresponding to the first HARQ-ACK codebook may correspond to one or more serving cells (or referred to as corresponding to one or more CCs (Component Carrier, carrier units)). Based on this, the at least one PDSCH may be all PDSCH corresponding to the first HARQ-ACK codebook; among the PDSCH corresponding to the first HARQ-ACK codebook, the PDSCH with the same corresponding serving cell index may be used.

As can be seen from the above examples, the terminal device may report the first feedback information corresponding to the at least one PDSCH to the network device as separate uplink information, or may report the first feedback information corresponding to the at least one PDSCH in combination with other uplink information to the network device. The other uplink information may include the HARQ-ACK codebook. Based on this, in one example, the above method further comprises: the terminal equipment sends first feedback information and a first HARQ-ACK codebook to the network equipment on a first uplink resource; in another example, the terminal device sends the first feedback information to the network device on a first uplink resource and the terminal device sends the first HARQ-ACK codebook to the network device on a second uplink resource.

In this embodiment of the present application, the network device may configure, by using a higher layer signaling, the terminal device to send the first feedback information on the first uplink resource, where the higher layer signaling optionally includes at least one of the following: SIB (System Information Block, system message block), RRC, MAC; or, the network device may instruct the terminal device to send the first feedback information on the first uplink resource through DCI. In the case that the network device indicates, through the DCI, the terminal device to send the first feedback information on the first uplink resource, a first indication field in the DCI is used to indicate the terminal device to send or not send the first feedback information, where the first indication field may be a newly defined indication field in the DCI or may be an indication field existing in the multiplexed DCI, which is not limited in this embodiment of the present application. Optionally, based on the first indication field in the DCI, if the first indication field in at least one DCI indicates the terminal device to send the first feedback information in the DCI corresponding to the PDSCH corresponding to the first HARQ-ACK codebook, the terminal device sends the first feedback information to the network device on the first uplink resource.

Based on the above embodiment, if the first feedback information is reported to the network device in combination with the first HARQ-ACK codebook, a certain bit may be reserved in the first HARQ-ACK codebook to carry the first feedback information, and optionally, a first feedback bit is reserved in the first HARQ-ACK codebook to carry the first feedback information. In the embodiment of the present application, the number of bits of the first feedback bit is not limited, and it is assumed that the network device configures m serving cells for the terminal device through higher layer signaling, where m is a positive integer, and the higher layer signaling includes at least one of the following: SIB, RRC, MAC; in one example, the number of bits of the first feedback information includes: the number of bits of the m first feedback bits, and each serving cell in the m serving cells corresponds to the number of bits of the first feedback bits; in another example, the number of bits of the first feedback information includes: the number of bits of the n first feedback bits is m, each of the m serving cells corresponds to the number of bits of the n first feedback bits, and n is a positive integer. Wherein the number of bits of the first feedback bit is equal to 1, or the number of bits of the first feedback bit is an integer greater than 1.

Illustratively, as shown in the following table two, the network device configures 3 serving cells for the terminal device, serving cell 1, serving cell 2, and serving cell 3, respectively. Assuming that the terminal device reports the first feedback information and the HARQ-ACK codebook to the network device on the same PUCCH resource, and assuming that the number of bits occupied by one first feedback information is x bits (x is a positive integer) and one serving cell corresponds to one first feedback information, the terminal device may reserve 3*x bits after the HARQ-ACK codebooks transmitted on PUCCH 1 and PUCCH 2, so as to be used for carrying the first feedback information respectively corresponding to 3 serving cells. Alternatively, the 3 x bits are arranged in the HARQ-ACK codebook in order (from small to large or from large to small) according to the size of the serving cell index. It should be appreciated that in this example, the at least one PDSCH corresponding to the first PDSCH includes: among the PDSCH corresponding to the HARQ-ACK codebook, PDSCH with the same serving cell index.

As shown in table two below, the HARQ-ACK codebook transmitted on PUCCH 1 corresponds to the HARQ-ACK information of PDSCH 1 to PDSCH 6, and the HARQ-ACK codebook transmitted on PUCCH 2 corresponds to the HARQ-ACK information of PDSCH 7 to PDSCH 11. Taking the HARQ-ACK codebook transmitted on PUCCH 1 as an example, the terminal device reserves 3*x bits after the HARQ-ACK information corresponding to PDSCH 1 to PDSCH 6, and each x bits is used to carry a first feedback information. The first x bits correspond to the serving cell 1 and are used for carrying first feedback information corresponding to the PDSCH 1 and/or the PDSCH 5; the second x bits correspond to the serving cell 2 and are used for bearing first feedback information corresponding to the PDSCH 2 and/or the PDSCH 3 and/or the PDSCH 6; the third x bits correspond to the serving cell 3 and are used to carry the first feedback information corresponding to the PDSCH 4.

PDSCH corresponding to HARQ-ACK codebook of table two

Serving cell 1	PDSCH 1	/	PDSCH 5	/	PDSCH 7	PDSCH 10	/
Serving cell 2	PDSCH 2	PDSCH 3	PDSCH 6	PUCCH 1	PDSCH 8	/	PUCCH 2
Serving cell 3	/	PDSCH 4	/	/	PDSCH 9	PDSCH 11	/

Of course, the at least one PDSCH may be determined in other manners besides the PDSCH in a period of time or the PDSCH corresponding to the HARQ-ACK codebook in the above embodiment. In the following, several other ways of determining at least one PDSCH are shown.

In one example, the first PDSCH is a PDSCH of the at least one PDSCH (or the first PDSCH is included in the at least one PDSCH); the priority index of the uplink channel carrying the HARQ-ACK information corresponding to at least one PDSCH is the same, and the priority index may be the priority index 0 or the priority index 1 described in the description above; and/or, the MCS tables corresponding to the at least one PDSCH are the same, and the MCS tables may be 256QAM, 64QAM or lowSE64QAM as described in the above description.

In another example, the first PDSCH is a PDSCH of the at least one PDSCH (or the first PDSCH is included in the at least one PDSCH); at least one PDSCH does not include PDSCH with number of occupied PRBs smaller than the first value, that is, corresponds to reporting of wideband first feedback information; and/or, the at least one PDSCH does not include a PDSCH in which the occupied PRB overlaps with the first bandwidth by less than the second value, that is, corresponds to reporting of the sub-band first feedback information, for example, one serving cell activation BWP may be divided into a plurality of first bandwidths, and one first feedback information may be reported corresponding to each first bandwidth.

Of course, in the embodiment of the present application, multiple manners of determining at least one PDSCH may be used in combination. For example, the at least one PDSCH may include: among the PDSCH equal to or later than the third time and earlier than or equal to the first time, PDSCH with the same priority index of the uplink channel carrying the corresponding HARQ-ACK information. For another example, the at least one PDSCH may include: among the PDSCH corresponding to the first HARQ-ACK codebook, the PDSCH with the same priority index of the uplink channel carrying the corresponding HARQ-ACK information. As another example, the at least one PDSCH may include: among the PDSCH equal to or later than the third time and earlier than or equal to the first time, the corresponding MCS table is the same PDSCH. Also for example, the at least one PDSCH may include: among the PDSCHs corresponding to the first HARQ-ACK codebook, the PDSCHs with the same corresponding MCS tables. It should be understood that, based on the multiple manners of determining the at least one PDSCH provided in the embodiments of the present application, all combinations capable of implementing determining the at least one PDSCH should fall within the protection scope of the present application.

In summary, according to the technical solution provided in the embodiments of the present application, by providing multiple manners of determining at least one PDSCH corresponding to feedback information, similar scheduling reference information is ensured to be provided for the network device, so that flexibility of determining at least one PDSCH by the terminal device is improved. In addition, since the difference of channel quality and/or channel characteristics of different serving cells may be larger, in the embodiment of the present application, bits for carrying feedback information are reserved for each serving cell after each HARQ-ACK codebook, so that the network device can obtain the channel quality and/or channel characteristics of multiple serving cells by reporting the HARQ-ACK codebook once, and also can implicitly obtain a time window of at least one PDSCH through the reporting time window of the HARQ-ACK codebook. In addition, in the embodiment of the present application, at least one PDSCH is determined by explicitly indicating a period of time or a time window, which can be more suitable for the situation that feedback information and HARQ-ACK codebook are reported separately, and the right boundary of the time window can be defined by multiplexing the processing duration of the PDSCH, and can avoid definition of additional processing time.

It should be noted that, in the above embodiment, the information feedback method provided in the embodiment of the present application is described from the perspective of interaction between the terminal device and the network device. In the above embodiment, the steps executed by the terminal device may be implemented separately as an information feedback method on the terminal device side; the steps executed by the network device can be implemented as an information feedback method on the network device side.

The following are device embodiments of the present application, which may be used to perform method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Referring to fig. 5, a block diagram of an information feedback device according to an embodiment of the present application is shown. The device has the function of realizing the method example of the terminal equipment side, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The device may be the terminal device described above, or may be provided in the terminal device. As shown in fig. 5, the apparatus 500 may include: an information sending module 510.

An information sending module 510, configured to send first feedback information to a network device, where the first feedback information is obtained based on a reference modulation and coding scheme MCS; wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.

In one example, the first PDSCH includes any one of: the nearest PDSCH of the at least one PDSCH; the nearest primary PDSCH of the at least one PDSCH; a primary PDSCH corresponding to a nearest PDSCH of the at least one PDSCH; a PDSCH with the minimum MCS corresponding to at least one PDSCH; a PDSCH with a maximum MCS corresponding to the at least one PDSCH; wherein the at least one PDSCH includes the first PDSCH.

In one example, the first PDSCH includes any one of: the nearest PDSCH before the first time; the latest initial transmission PDSCH before the first moment; a first transmission PDSCH corresponding to a latest PDSCH before a first moment; the first time unit or the last time unit of the transmission resource used for carrying the first feedback information is a second time, and the first time is earlier than or equal to the second time.

In one example, a duration between the first time and the second time is equal to or greater than a processing duration of the PDSCH.

In one example, the first PDSCH is a PDSCH of the at least one PDSCH (or the first PDSCH is included in the at least one PDSCH); the at least one PDSCH includes a PDSCH equal to or later than a third time instant, the third time instant being earlier than or equal to the first time instant; the time length between the third time and the first time is a first time length, or the time length between the third time and the second time is a second time length.

In one example, the first PDSCH further includes any one of: among the PDSCH equal to or later than the third time and earlier than or equal to the first time, the PDSCH having the smallest corresponding MCS; and the PDSCH with the largest corresponding MCS among the PDSCHs which are equal to or later than the third time and earlier than or equal to the first time.

In one example, the first PDSCH is a PDSCH of the at least one PDSCH (or the first PDSCH is included in the at least one PDSCH); the at least one PDSCH includes any one of: PDSCH corresponding to the first hybrid automatic repeat request-positive acknowledgement (HARQ-ACK) codebook; among the PDSCHs corresponding to the first HARQ-ACK codebook, corresponding PDSCHs with the same serving cell index.

In one example, the information sending module 510 is further configured to: the terminal equipment sends the first feedback information and a first HARQ-ACK codebook to the network equipment on a first uplink resource; alternatively, as shown in fig. 6, the apparatus 500 further includes a codebook transmission module 520; the information sending module 510 is configured to send, on a first uplink resource, the first feedback information to the network device by using the terminal device; the codebook sending module 520 is configured to send a first HARQ-ACK codebook to the network device on the second uplink resource by the terminal device.

In one example, the terminal device sends the first feedback information on the first uplink resource based on higher layer signaling from the network device; or the terminal equipment sends the first feedback information on the first uplink resource based on Downlink Control Information (DCI) from the network equipment.

In one example, a first indication field in the DCI is used to instruct the terminal device to send or not send the first feedback information; the terminal device sends the first feedback information to the network device on a first uplink resource, including: and when a first indication domain in at least one DCI exists in DCI corresponding to PDSCH corresponding to the first HARQ-ACK codebook and indicates the terminal equipment to send the first feedback information, the terminal equipment sends the first feedback information to the network equipment on the first uplink resource.

In one example, the network device configures m serving cells for the terminal device through higher layer signaling, where m is a positive integer; the bit number of the first feedback information includes any one of the following: the number of bits of m first feedback bits, wherein each serving cell in the m serving cells corresponds to the number of bits of the first feedback bits; the method comprises the steps that m is the bit number of n first feedback bits, each service cell in m service cells corresponds to the bit number of n first feedback bits, and n is a positive integer; wherein the first feedback bit is used for carrying the first feedback information; the number of bits of the first feedback bit is equal to 1, or the number of bits of the first feedback bit is an integer greater than 1.

In one example, the first feedback information is derived based on a first transport block TB; wherein the size of the first TB is obtained based on the first PDSCH or the size of the first TB is obtained based on at least one PDSCH; the at least one PDSCH includes the first PDSCH.

In one example, the size of the first TB is derived based on information related to the first PDSCH on at least one of: a target MCS, a physical resource block PRB occupied by the first PDSCH; alternatively, the size of the first TB is obtained based on information related to the at least one PDSCH, which is at least one of: a target MCS, PRBs occupied by the at least one PDSCH; wherein the target MCS is derived based on the first PDSCH or at least one PDSCH.

In one example, the first PDSCH is a PDSCH of the at least one PDSCH (or the first PDSCH is included in the at least one PDSCH); the number of the at least one PDSCH is k, the k is equal to 1 or the k is an integer greater than 1; the target MCS is obtained based on k intermediate target MCS, wherein the ith intermediate target MCS in the k intermediate target MCS is obtained based on the ith PDSCH in the k PDSCH, and i is a positive integer less than or equal to k; wherein the target MCS is any one of the following: the minimum value of the k intermediate target MCSs, the average value of the k intermediate target MCSs, and the maximum value of the k intermediate target MCSs.

In one example, the terminal device determines the k intermediate target MCSs based on the same target block error rate BLER.

In one example, the first PDSCH is a PDSCH of the at least one PDSCH (or the first PDSCH is included in the at least one PDSCH); the priority index of the uplink channel carrying the HARQ-ACK information corresponding to the at least one PDSCH is the same; and/or the MCS tables corresponding to the at least one PDSCH are the same.

In one example, the first PDSCH is a PDSCH of the at least one PDSCH (or the first PDSCH is included in the at least one PDSCH); the at least one PDSCH does not include PDSCH with number of occupied PRBs less than the first value; and/or, the at least one PDSCH does not include a PDSCH in which occupied PRBs overlap with the first bandwidth by less than a second value.

Referring to fig. 7, a block diagram of an information feedback device according to an embodiment of the present application is shown. The device has the function of realizing the method example of the network equipment side, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The apparatus may be the network device described above, or may be provided in the network device. As shown in fig. 7, the apparatus 700 may include: the information receiving module 710.

An information receiving module 710, configured to receive, by a network device, first feedback information sent by a terminal device, where the first feedback information is obtained based on a reference modulation and coding scheme MCS; wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.

In one example, the information receiving module 710 is further configured to receive, on a first uplink resource, the first feedback information and a first hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook sent by the terminal device; alternatively, as shown in fig. 8, the apparatus 700 further includes a codebook receiving module 720, where the information receiving module 710 is configured to receive, on a first uplink resource, the first feedback information sent by the terminal device; the codebook receiving module 720 is configured to receive, on a second uplink resource, a first HARQ-ACK codebook sent by the terminal device.

In one example, the network device configures the terminal device to send the first feedback information on the first uplink resource through higher layer signaling; or the network device indicates the terminal device to send the first feedback information on the first uplink resource through downlink control information DCI.

It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the respective functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Referring to fig. 9, a schematic structural diagram of a terminal device 90 according to an embodiment of the present application is shown, and for example, the terminal device may be used to perform the information feedback method on the terminal device side. Specifically, the terminal device 90 may include: a processor 91, and a transceiver 92 coupled to the processor 91; wherein:

the processor 91 includes one or more processing cores, and the processor 91 executes various functional applications and information processing by running software programs and modules.

The transceiver 92 includes a receiver and a transmitter. Alternatively, the transceiver 92 is a communication chip.

In one example, the terminal device 90 further includes: memory and bus. The memory is connected to the processor through a bus. The memory may be used for storing a computer program, and the processor is used for executing the computer program to implement the steps executed by the terminal device in the above-mentioned method embodiment.

Further, the memory may be implemented by any type of volatile or nonvolatile memory device, including but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other solid state Memory technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc, high density digital video disc) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices.

The transceiver 92 is configured to send, by the terminal device, first feedback information to the network device, where the first feedback information is obtained based on a reference modulation and coding scheme MCS; wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.

In one example, the transceiver 92 is further configured to: the terminal equipment sends the first feedback information and a first HARQ-ACK codebook to the network equipment on a first uplink resource; or the terminal equipment sends the first feedback information to the network equipment on a first uplink resource; and the terminal equipment sends the first HARQ-ACK codebook to the network equipment on the second uplink resource.

In one example, a first indication field in the DCI is used to instruct the terminal device to send or not send the first feedback information; the transceiver 92 is further configured to: and when a first indication domain in at least one DCI exists in DCI corresponding to PDSCH corresponding to the first HARQ-ACK codebook and indicates the terminal equipment to send the first feedback information, the terminal equipment sends the first feedback information to the network equipment on the first uplink resource.

Referring to fig. 10, a schematic structural diagram of a network device 100 according to an embodiment of the present application is shown, for example, the network device may be used to execute the information feedback method on the network device side. Specifically, the network device 100 may include: a processor 101 and a transceiver 102 coupled to the processor 101; wherein:

the processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.

The transceiver 102 includes a receiver and a transmitter. Alternatively, transceiver 102 is a communication chip.

In one example, the terminal device 100 further includes: memory and bus. The memory is connected to the processor through a bus. The memory may be used to store a computer program for execution by the processor to perform the steps performed by the network device in the method embodiments described above.

The transceiver 102 is configured to: the network equipment receives first feedback information sent by the terminal equipment, wherein the first feedback information is obtained based on a reference Modulation and Coding Strategy (MCS); wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.

In one example, the transceiver 102 is further configured to: the network equipment receives the first feedback information and a first hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook sent by the terminal equipment on a first uplink resource; or the network equipment receives the first feedback information sent by the terminal equipment on a first uplink resource; and the network equipment receives the first HARQ-ACK codebook sent by the terminal equipment on the second uplink resource.

The embodiment of the application also provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is used for being executed by a processor of terminal equipment so as to realize the information feedback method at the terminal equipment side.

The embodiment of the application also provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is used for being executed by a processor of network equipment to realize the information feedback method at the network equipment side.

The embodiment of the application also provides a chip, which comprises a programmable logic circuit and/or program instructions and is used for realizing the information feedback method at the terminal equipment side when the chip runs on the terminal equipment.

The embodiment of the application also provides a chip, which comprises a programmable logic circuit and/or program instructions and is used for realizing the information feedback method at the network equipment side when the chip runs on the network equipment.

The embodiment of the application also provides a computer program product which is used for realizing the information feedback method at the terminal equipment side when the computer program product runs on the terminal equipment.

The embodiment of the application also provides a computer program product which is used for realizing the information feedback method at the network equipment side when the computer program product runs on the network equipment.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The foregoing description of the exemplary embodiments of the present application is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the invention.

Claims

An information feedback method, characterized in that the method comprises:

The method comprises the steps that terminal equipment sends first feedback information to network equipment, wherein the first feedback information is obtained based on a reference Modulation and Coding Strategy (MCS);

wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.
The method of claim 1, wherein the first PDSCH comprises any one of:

the nearest PDSCH of the at least one PDSCH;

the nearest primary PDSCH of the at least one PDSCH;

a primary PDSCH corresponding to a nearest PDSCH of the at least one PDSCH;

a PDSCH with the minimum MCS corresponding to at least one PDSCH;

the PDSCH with the largest corresponding MCS among the at least one PDSCH.
The method of claim 1 or 2, wherein the first PDSCH comprises any one of:

the nearest PDSCH before the first time;

the latest initial transmission PDSCH before the first moment;

a first transmission PDSCH corresponding to a latest PDSCH before a first moment;

the first time unit or the last time unit of the transmission resource used for carrying the first feedback information is a second time, and the first time is earlier than or equal to the second time.
The method of claim 3, wherein a duration between the first time and the second time is equal to or greater than a processing duration of the PDSCH.
The method of claim 3 or 4, wherein the first PDSCH is included in at least one PDSCH;

the at least one PDSCH includes a PDSCH equal to or later than a third time instant, the third time instant being earlier than or equal to the first time instant;

the time length between the third time and the first time is a first time length, or the time length between the third time and the second time is a second time length.
The method of claim 5, wherein the first PDSCH further comprises any one of:

among the PDSCH equal to or later than the third time and earlier than or equal to the first time, the PDSCH having the smallest corresponding MCS;

and the PDSCH with the largest corresponding MCS among the PDSCHs which are equal to or later than the third time and earlier than or equal to the first time.
The method of any one of claims 1 to 6, wherein the first PDSCH is contained in at least one PDSCH;

the at least one PDSCH includes any one of:

PDSCH corresponding to the first hybrid automatic repeat request-positive acknowledgement (HARQ-ACK) codebook;

among the PDSCHs corresponding to the first HARQ-ACK codebook, corresponding PDSCHs with the same serving cell index.
The method according to any one of claims 1 to 7, further comprising:

the terminal equipment sends the first feedback information and a first HARQ-ACK codebook to the network equipment on a first uplink resource;

or,

the terminal equipment sends the first feedback information to the network equipment on a first uplink resource; and the terminal equipment sends the first HARQ-ACK codebook to the network equipment on the second uplink resource.
The method of claim 8, wherein the step of determining the position of the first electrode is performed,

the terminal equipment sends the first feedback information on the first uplink resource based on the high-level information from the network equipment;

or,

and the terminal equipment sends the first feedback information on the first uplink resource based on Downlink Control Information (DCI) from the network equipment.
The method of claim 9, wherein a first indication field in the DCI is used to indicate the terminal device to send or not send the first feedback information;

The terminal device sends first feedback information to the network device on the first uplink resource, including:

and when a first indication domain in at least one DCI exists in DCI corresponding to PDSCH corresponding to the first HARQ-ACK codebook and indicates the terminal equipment to send the first feedback information, the terminal equipment sends the first feedback information to the network equipment on the first uplink resource.
The method according to any of claims 7 to 10, characterized in that the terminal device is configured with m serving cells, m being a positive integer;

the bit number of the first feedback information includes any one of the following:

the number of bits of m first feedback bits, wherein each serving cell in the m serving cells corresponds to the number of bits of the first feedback bits;

the method comprises the steps that m is the bit number of n first feedback bits, each service cell in m service cells corresponds to the bit number of n first feedback bits, and n is a positive integer;

wherein the first feedback bit is used for carrying the first feedback information; the number of bits of the first feedback bit is equal to 1, or the number of bits of the first feedback bit is an integer greater than 1.
The method according to any of the claims 1 to 11, characterized in that the first feedback information is obtained based on a first transport block, TB;

wherein the size of the first TB is obtained based on the first PDSCH or the size of the first TB is obtained based on at least one PDSCH; the at least one PDSCH includes the first PDSCH.
The method of claim 12, wherein the step of determining the position of the probe is performed,

the size of the first TB is derived based on information related to the first PDSCH at least one of: a target MCS, a physical resource block PRB occupied by the first PDSCH;

or,

the size of the first TB is derived based on information related to the at least one PDSCH, which is at least one of: a target MCS, PRBs occupied by the at least one PDSCH;

wherein the target MCS is derived based on the first PDSCH or at least one PDSCH.
The method of any one of claims 1 to 13, wherein the first PDSCH is contained in at least one PDSCH; the number of the at least one PDSCH is k, the k is equal to 1 or the k is an integer greater than 1;

the target MCS is obtained based on k intermediate target MCS, wherein the ith intermediate target MCS in the k intermediate target MCS is obtained based on the ith PDSCH in the k PDSCH, and i is a positive integer less than or equal to k;

Wherein the target MCS is any one of the following: the minimum value of the k intermediate target MCSs, the average value of the k intermediate target MCSs, and the maximum value of the k intermediate target MCSs.
The method of claim 14, wherein the terminal device determines the k intermediate target MCSs based on the same target block error rate BLER.
The method of any one of claims 1 to 15, wherein the first PDSCH is contained in at least one PDSCH;

the priority index of the uplink channel carrying the HARQ-ACK information corresponding to the at least one PDSCH is the same;

and/or the number of the groups of groups,

the MCS tables corresponding to the at least one PDSCH are the same.
The method of any one of claims 1 to 16, wherein the first PDSCH is contained in at least one PDSCH;

the at least one PDSCH does not include PDSCH with number of occupied PRBs less than the first value;

and/or the number of the groups of groups,

the at least one PDSCH does not include PDSCH in which occupied PRBs overlap the first bandwidth by less than a second value.
An information feedback method, characterized in that the method comprises:

the network equipment receives first feedback information sent by the terminal equipment, wherein the first feedback information is obtained based on a reference Modulation and Coding Strategy (MCS);

Wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.
The method of claim 18, wherein the method further comprises:

the network equipment receives the first feedback information and a first hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook sent by the terminal equipment on a first uplink resource;

or,

the network equipment receives the first feedback information sent by the terminal equipment on a first uplink resource; and the network equipment receives the first HARQ-ACK codebook sent by the terminal equipment on the second uplink resource.
The method according to claim 18 or 19, wherein,

the network equipment configures the terminal equipment to send the first feedback information on the first uplink resource through high-layer signaling;

or,

and the network equipment indicates the terminal equipment to send the first feedback information on the first uplink resource through downlink control information DCI.
An information feedback device, the device comprising:

The information sending module is used for sending first feedback information to the network equipment by the terminal equipment, wherein the first feedback information is obtained based on a reference Modulation and Coding Strategy (MCS);

wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.
The apparatus of claim 21, wherein the first PDSCH comprises any one of:

the nearest PDSCH of the at least one PDSCH;

the nearest primary PDSCH of the at least one PDSCH;

a primary PDSCH corresponding to a nearest PDSCH of the at least one PDSCH;

a PDSCH with the minimum MCS corresponding to at least one PDSCH;

the PDSCH with the largest corresponding MCS among the at least one PDSCH.
The apparatus of claim 21 or 22, wherein the first PDSCH comprises any one of:

the nearest PDSCH before the first time;

the latest initial transmission PDSCH before the first moment;

a first transmission PDSCH corresponding to a latest PDSCH before a first moment;

the first time unit or the last time unit of the transmission resource used for carrying the first feedback information is a second time, and the first time is earlier than or equal to the second time.
The apparatus of claim 23, wherein a duration between the first time and the second time is equal to or greater than a processing duration of PDSCH.
The apparatus of claim 23 or 24, wherein the first PDSCH is included in at least one PDSCH;

the at least one PDSCH includes a PDSCH equal to or later than a third time instant, the third time instant being earlier than or equal to the first time instant;

the time length between the third time and the first time is a first time length, or the time length between the third time and the second time is a second time length.
The apparatus of claim 25, wherein the first PDSCH further comprises any one of:

among the PDSCH equal to or later than the third time and earlier than or equal to the first time, the PDSCH having the smallest corresponding MCS;

and the PDSCH with the largest corresponding MCS among the PDSCHs which are equal to or later than the third time and earlier than or equal to the first time.
The apparatus of any one of claims 21 to 26, wherein the first PDSCH is contained in at least one PDSCH;

the at least one PDSCH includes any one of:

PDSCH corresponding to the first hybrid automatic repeat request-positive acknowledgement (HARQ-ACK) codebook;

among the PDSCHs corresponding to the first HARQ-ACK codebook, corresponding PDSCHs with the same serving cell index.
The device according to any one of claims 21 to 27, wherein,

the information sending module is further configured to: the terminal equipment sends the first feedback information and a first HARQ-ACK codebook to the network equipment on a first uplink resource;

or,

the device also comprises a codebook sending module; the information sending module is configured to send, on a first uplink resource, the first feedback information to the network device by using the terminal device; the codebook sending module is configured to send a first HARQ-ACK codebook to the network device on the second uplink resource by the terminal device.
The apparatus of claim 28, wherein the device comprises a plurality of sensors,

the terminal equipment sends the first feedback information on the first uplink resource based on high-layer signaling from the network equipment;

or,

and the terminal equipment sends the first feedback information on the first uplink resource based on Downlink Control Information (DCI) from the network equipment.
The apparatus of claim 29, wherein a first indication field in the DCI is configured to instruct the terminal device to send or not send the first feedback information; the terminal device sends the first feedback information to the network device on a first uplink resource, including:

and when a first indication domain in at least one DCI exists in DCI corresponding to PDSCH corresponding to the first HARQ-ACK codebook and indicates the terminal equipment to send the first feedback information, the terminal equipment sends the first feedback information to the network equipment on the first uplink resource.
The apparatus according to any of claims 27 to 30, wherein the terminal device is configured with m serving cells, m being a positive integer;

the bit number of the first feedback information includes any one of the following:

the number of bits of m first feedback bits, wherein each serving cell in the m serving cells corresponds to the number of bits of the first feedback bits;

the method comprises the steps that m is the bit number of n first feedback bits, each service cell in m service cells corresponds to the bit number of n first feedback bits, and n is a positive integer;

Wherein the first feedback bit is used for carrying the first feedback information; the number of bits of the first feedback bit is equal to 1, or the number of bits of the first feedback bit is an integer greater than 1.
The apparatus of any one of claims 21 to 31, wherein the first feedback information is obtained based on a first transport block, TB;

wherein the size of the first TB is obtained based on the first PDSCH or the size of the first TB is obtained based on at least one PDSCH; the at least one PDSCH includes the first PDSCH.
The apparatus of claim 32, wherein the device comprises a plurality of sensors,

the size of the first TB is derived based on information related to the first PDSCH at least one of: a target MCS, a physical resource block PRB occupied by the first PDSCH;

or,

the size of the first TB is derived based on information related to the at least one PDSCH, which is at least one of: a target MCS, PRBs occupied by the at least one PDSCH;

wherein the target MCS is derived based on the first PDSCH or at least one PDSCH.
The apparatus of any one of claims 21 to 33, wherein the first PDSCH is contained in at least one PDSCH; the number of the at least one PDSCH is k, the k is equal to 1 or the k is an integer greater than 1;

The target MCS is obtained based on k intermediate target MCS, wherein the ith intermediate target MCS in the k intermediate target MCS is obtained based on the ith PDSCH in the k PDSCH, and i is a positive integer less than or equal to k;

wherein the target MCS is any one of the following: the minimum value of the k intermediate target MCSs, the average value of the k intermediate target MCSs, and the maximum value of the k intermediate target MCSs.
The apparatus of claim 34, wherein the terminal device determines the k intermediate target MCSs based on a same target block error rate, BLER.
The apparatus of any one of claims 21 to 35, wherein the first PDSCH is contained in at least one PDSCH;

the priority index of the uplink channel carrying the HARQ-ACK information corresponding to the at least one PDSCH is the same;

and/or the number of the groups of groups,

the MCS tables corresponding to the at least one PDSCH are the same.
The apparatus of any one of claims 21 to 36, wherein the first PDSCH is contained in at least one PDSCH;

the at least one PDSCH does not include PDSCH with number of occupied PRBs less than the first value;

and/or the number of the groups of groups,

the at least one PDSCH does not include PDSCH in which occupied PRBs overlap the first bandwidth by less than a second value.
An information feedback device, the device comprising:

the information receiving module is used for receiving first feedback information sent by the terminal equipment by the network equipment, wherein the first feedback information is obtained based on a reference Modulation and Coding Strategy (MCS);

wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.
The apparatus of claim 38, wherein the device comprises a plurality of sensors,

the information receiving module is further configured to receive, on a first uplink resource, the first feedback information and a first hybrid automatic repeat request-acknowledgement (HARQ-ACK) codebook sent by the terminal device;

or,

the device also comprises a codebook receiving module, wherein the information receiving module is used for receiving the first feedback information sent by the terminal equipment on a first uplink resource by the network equipment; the codebook receiving module is configured to receive, on a second uplink resource, a first HARQ-ACK codebook sent by the terminal device.
The apparatus of claim 38 or 39, wherein the device comprises a device for controlling the flow of fluid,

The network equipment configures the terminal equipment to send the first feedback information on the first uplink resource through high-layer signaling;

or,

and the network equipment indicates the terminal equipment to send the first feedback information on the first uplink resource through downlink control information DCI.
A terminal device, characterized in that the terminal device comprises: a processor, and a transceiver coupled to the processor; wherein:

the transceiver is configured to send first feedback information to the network device by the terminal device, where the first feedback information is obtained based on a reference modulation and coding scheme MCS;

wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.
A network device, the network device comprising: a processor, and a transceiver coupled to the processor; wherein:

the transceiver is configured to receive, by using a network device, first feedback information sent by a terminal device, where the first feedback information is obtained based on a reference modulation and coding scheme MCS;

wherein the reference MCS corresponds to a first physical downlink shared channel PDSCH, or the reference MCS is configured by the network device, or the reference MCS is predefined by a communication protocol.
A computer readable storage medium, characterized in that the storage medium has stored therein a computer program for execution by a processor of a terminal device for realizing the information feedback method according to any one of claims 1 to 17.
A computer readable storage medium, characterized in that the storage medium has stored therein a computer program for execution by a processor of a network device for implementing the information feedback method according to any of claims 18 to 20.