CN113498205A

CN113498205A - Method and related device for transmitting feedback information

Info

Publication number: CN113498205A
Application number: CN202010271541.3A
Authority: CN
Inventors: 赵思聪; 周化雨; 雷珍珠
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-10-12
Anticipated expiration: 2040-04-08
Also published as: CN113498205B

Abstract

The embodiment of the application discloses a method for transmitting feedback information and a related device thereof, which are applied to a terminal, wherein the method comprises the following steps: receiving downlink control information, and analyzing a first indication domain in the downlink control information; and if the first indication domain indicates that the feedback information binding is enabled, executing logic and calculation on M feedback information to generate feedback information, wherein the value of M is determined by the first indication domain and/or the indication domain for changing the purpose and/or the binding information domain. In the embodiment of the present application, logic and calculation are performed to generate one feedback information according to M pieces of feedback information determined by the first indication field and/or the indication field for changing the purpose and/or the binding information field, so as to solve the problem of indication of the bundle size of the feedback information in the new wireless technology service NR-light.

Description

Method and related device for transmitting feedback information

Technical Field

The present application relates to the field of electronic technologies, and in particular, to a method and a related apparatus for transmitting feedback information.

Background

With the continuous development of mobile communication technology, a fifth generation mobile communication (5th generation communication system) system defines three application scenarios, including enhanced mobile broadband (eMBB), ultra-reliable and low latency communication (URLLC), and massive machine type communication (mtc). These three application scenarios form a 5G application landscape. The practical application also includes some new services and new terminal types which do not belong to the three application scenarios, they have certain transmission rate requirements, but much less than that of the eMBB, their requirements on delay are lower than URLLC and higher than that of the eMBB, and they also have the service attributes of machine type communication. This new service is defined as a lightweight new radio-Light (NR-Light) service.

Currently, NR-Light mainly considers several application scenarios, video monitoring, industrial sensors and wearable devices. A terminal in the NR-Light scenario does not need to have high complexity, the number of receiving/transmitting antennas may be reduced to 1, the processing capability may be reduced to a Machine Type Communication (MTC) level, and a main supported format may be half-duplex frequency division multiplexing (HD-FDD). Under the HD-FDD mechanism, the terminal can only receive and cannot transmit at a certain time, or can only transmit and cannot receive. In this scheme, when the terminal needs to feed back the downlink data after receiving the data, it needs to switch to the uplink to send the feedback information again. If the terminal needs to feed back each downlink data individually, the number of the required uplink sub-frames is consistent with the number of the downlink scheduled data sub-frames, and the number of the downlink sub-frames of the terminal in unit time length is difficult to increase by adding the conversion sub-frames, thereby affecting the transmission rate of the downlink data. Thus, a mechanism for feeding back information binding (e.g., hybrid automatic repeat request binding (HARQ-bundling)) is proposed and applied.

In the HD-FDD mechanism, an important information that a terminal needs to know is a Physical Downlink Shared Channel (PDSCH) bonding size (bundle size), and a reuse downlink control information repetition field (e.g., downlink control information subframe repetition number field) in the MTC indicates the bundle size. However, the Downlink Control Information (DCI) of NR-light may not need to employ retransmission, and thus there is no field of the number of times of subframe repetition of the downlink control information to indicate the size of the bundle, and therefore the problem of the size indication in NR-light needs to be solved.

Disclosure of Invention

The embodiment of the application provides a method and a related device for transmitting feedback information, so as to solve the problem of bundle size indication in NR-light under the condition that DCI of the NR-light may not need to adopt a downlink control information repetition domain.

In a first aspect, an embodiment of the present application provides a method for transmitting feedback information, where the method is applied to a terminal, and the method includes:

receiving downlink control information, and analyzing a first indication domain in the downlink control information, wherein the first indication domain is used for indicating whether feedback information binding is started or not;

and if the first indication domain indicates that the feedback information binding is enabled, executing logic and calculation on M feedback information to generate feedback information, wherein the value of M is determined by the first indication domain and/or the indication domain for changing the purpose and/or the binding information domain.

In a second aspect, an embodiment of the present application provides an apparatus for transmitting feedback information, where the apparatus is applied to a terminal, and the apparatus includes: a processing unit and a communication unit, wherein,

the processing unit is configured to receive downlink control information and analyze a first indication field in the downlink control information, where the first indication field is used to indicate whether to enable feedback information binding;

and the processing unit is further configured to perform logic and computation on M feedback information to generate one feedback information if the first indication field indicates that the feedback information binding is enabled, wherein a value of M is determined by the first indication field and/or an indication field for changing the purpose and/or a binding information field.

In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing steps in any method of the first aspect of the embodiment of the present application.

In a fourth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform part or all of the steps described in any one of the methods of the first aspect of the present application.

In a fifth aspect, the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps as described in any one of the methods of the first aspect of the embodiments of the present application. The computer program product may be a software installation package.

It can be seen that, in the embodiment of the present application, a first indication field in downlink control information is analyzed by receiving the downlink control information, where the first indication field is used to indicate whether to enable feedback information binding; and if the first indication domain indicates that the feedback information binding is enabled, executing logic and calculation on M feedback information to generate feedback information, wherein the value of M is determined by the first indication domain and/or the indication domain for changing the purpose and/or the binding information domain. In this example, the problem of the feedback information bundle size indication in NR-light is solved by performing a logical and computation on M pieces of feedback information determined by the first indication field and/or the indication field of change purpose and/or the binding information field to generate one piece of feedback information in case that the first indication field indicates that the feedback information binding is enabled.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1A is a schematic diagram of an example communication system provided by an embodiment of the present application;

fig. 1B is a schematic diagram of HARQ feedback of HD-FDD according to an embodiment of the present application;

fig. 1C is a schematic diagram of HARQ-bundling feedback provided in an embodiment of the present application;

fig. 2A is a flowchart illustrating a method for transmitting feedback information according to an embodiment of the present disclosure;

fig. 2B is a schematic diagram of a second indication field provided in the embodiment of the present application;

fig. 2C is a schematic diagram of a third indication domain provided in the embodiment of the present application;

fig. 2D is a schematic diagram of another third indication field provided by the embodiment of the present application;

fig. 3 is a flowchart illustrating a method for transmitting feedback information according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

fig. 5 is a block diagram illustrating functional units of an apparatus for transmitting feedback information according to an embodiment of the present disclosure.

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The technical solution of the embodiment of the present application may be applied to the example communication system 100 shown in fig. 1A, where the example communication system 100 includes a terminal 110 and a network device 120, and the terminal 110 is communicatively connected to the network device 120.

The example communication system 100 may be, for example: Non-Terrestrial communication Network (NTN) systems, global system for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, universal mobile telecommunications system (universal mobile telecommunications system, UMTS), universal internet access (worldwide interoperability for telecommunications, WiMAX) systems, future radio (NR 5) systems, and so on.

A terminal 110 in the embodiments of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device. The terminal may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a relay device, a vehicle-mounted device, a wearable device, a terminal in a future 5G network or a terminal in a future evolved Public Land Mobile Network (PLMN), and the like, which are not limited in this embodiment.

The network device 120 in the embodiment of the present application may be a device for communicating with a terminal, the network device may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) system or a Code Division Multiple Access (CDMA) system, may be a base station (NodeB) in a Wideband Code Division Multiple Access (WCDMA) system, may be an evolved NodeB (NB), eNB or eNodeB) in an LTE system, may be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or may be a relay device, an access point, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, one or a set of antenna panels (including multiple antenna panels) of a base station in a 5G system, alternatively, the network node may also be a network node that forms a gNB or a transmission point, such as a baseband unit (BBU), a Distributed Unit (DU), or the like, and the embodiment of the present application is not limited.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may also include an Active Antenna Unit (AAU). The CU implements part of the function of the gNB and the DU implements part of the function of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implementing functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or by the DU + AAU under this architecture. It is to be understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

In the embodiment of the present application, the terminal 110 or the network device 120 includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution main body of the method provided by the embodiment of the present application, as long as the communication can be performed according to the method provided by the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, for example, the execution main body of the method provided by the embodiment of the present application may be a terminal, or a functional module in the terminal that can call the program and execute the program.

Currently, NR-Light mainly considers several application scenarios, video monitoring, industrial sensors and wearable devices. Terminals in NR-Light scenarios do not require high complexity.

The NR-Light is a simplified New Radio (NR), and the service characteristics of the terminal are a collection of three application scenarios, namely eMBB, URLLC, and mtc in 5G, but there is no transmission rate requirement or delay requirement that is extreme as in the three application scenarios.

NR-light also supports a relatively relaxed HD-FDD mode on the system due to its relatively low processing power. When a terminal needs to feed back after receiving downlink data in the HD-FDD mode, it needs to switch to uplink, as shown in fig. 1B:

for example, the terminal is scheduled three downlink PDSCHs, which are located in

subframes

2,3, and 4. When the terminal needs to perform separate feedback on the three PDSCHs, after one uplink/downlink switching subframe 5, the terminal needs 3

uplink subframes

6, 7, and 8 to send feedback information. It can be seen that, in the HD-FDD mode, the number of downlink subframes reserved in a unit time is relatively small, and the rate of downlink data is limited to a large extent.

For the problem, an HARQ-bundling mode is proposed, in which a terminal combines feedback information of multiple PDSCHs into 1-bit information in a logical and manner, and then performs feedback, so that only one feedback subframe is needed for multiple PDSCHs, and in this case, the number of downlink subframes can be increased, thereby increasing the rate of downlink data. However, HARQ-bundling has a problem that if one of the PDSCHs fails to decode (i.e. has a decoding error), other data are decoded correctly, and when the multiple PDSCHs perform logical and of feedback information, the feedback information is 0, that is, a Negative Acknowledgement (NACK) is determined, and the base station needs to retransmit all PDSCHs, which has a negative effect on the improvement of the transmission rate. For this, HARQ-bundling has two limitations: 1. the HARQ-bundling is only used in an environment with better channel conditions; 2. and limiting the bundle size of the HARQ-bundling, namely limiting the number of the PDSCHs fed back together. For example, the number of the bundle size is limited to 4, and even if retransmission is performed due to an error, only three PDSCHs are wasted, and no more PDSCH resources are wasted. For this bundle size, the base station can flexibly indicate, for example, DCI indicates in the standardization process of MTC. Another important purpose of DCI to dynamically indicate this bundle size is to prevent feedback of an acknowledgement when a missed detection occurs, as shown in fig. 1C below:

as shown in fig. 1C, the DCI in

subframes

0, 1, 2,3 schedules PDSCH in

subframes

2,3, 4, 5, and the feedback information of these 4 PDSCHs is transmitted in subframe 3 of the next system frame in HARQ-bundling manner. If the PDSCHs in these 4 subframes are decoded correctly, i.e. the decoding result of the PDSCHs in the above 4 subframes is (1, 1, 1, 1), the logical and result of the 4 positive Acknowledgements (ACKs) (1, 1, 1, 1) is 1, i.e. ACK is fed back in subframe 3 (subframe 3 corresponding to time t7 in the figure). If the DCI in subframe 2 is missed, the terminal only receives the DCI in

subframes

0, 1, and 3, schedules the PDSCH in

subframes

2,3, and if the terminal de-pairs the three PDSCHs, the terminal still feeds back ACK in subframe 3 (subframe 3 corresponding to time t7 in the figure). And the base station considers that the terminal correctly receives 4 PDSCHs in the

sub-frames

2,3, 4 and 5, and does not retransmit the missed PDSCH in the sub-frame 4, so that wrong scheduling occurs.

In order to solve the above problem of missed detection, a bundle size is indicated in the DCI, that is, the terminal is told how many PDSCHs the HARQ-bundling feedback is for (bundling). For the above miss-detection case: the terminal knows that bundling needs to be performed on 4 PDSCHs when receiving the subframe 0, if the DCI in the subframe 2 is missed, the terminal only receives the DCI in the

subframes

0, 1 and 3, and schedules 3 PDSCHs in the

subframes

2,3 and 5, even if the terminal decodes the three PDSCHs, the terminal feeds back NACK in the subframe 3 because the number of correctly decoded PDSCHs is not equal to the bundling size indicated in the DCI. The base station reschedules the 4 PDSCHs so that the missed PDSCHs in subframe 4 can be recovered during retransmission.

Currently, the way to indicate the bundle size is: a DCI subframe repetition number field (DCI subframe repetition number) in the DCI is reused to indicate the bundle size. When a Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK) binding indicator (bundling flag) field in the DCI indicates 1, that is, when HARQ-bundling mode feedback needs to be adopted, the DCI does not Repeat (repetition), and the DCI subframe repetition number field can be used to indicate a bundle size.

This scheme is not necessarily suitable for NR-light, since coverage enhancement of DCI for NR-light may be done in a way that increases the aggregation level. There is no field in the DCI indicating the number of DCI subframe repetitions. It is also mentioned that the PDSCH repetition number field is used to indicate the bundle size, that is, when HARQ-bundling is needed, the PDSCH repetition may not be needed or a larger number of PDSCH repetitions may not be needed.

The following describes embodiments of the present application in detail.

In order to solve the above problem, an embodiment of the present application provides a method for transmitting feedback information, which is applied to a terminal, and as shown in fig. 2A specifically, the method may include, but is not limited to, the following steps:

s201, receiving downlink control information, and analyzing a first indication domain in the downlink control information, wherein the first indication domain is used for indicating whether feedback information binding is enabled.

The bit length of the first indication field may be 1, or may be an integer greater than 1, for example, the bit length of the first indication field is 2. The first indication field may be an indication field indicating whether HARQ-bundling is enabled in DCI, or may be an indication field indicating whether HARQ-bundling is enabled and value information of M.

In a specific implementation, the first indication field indicates whether the terminal enables feedback information binding or not, when the bit length of the first indication field is 1.

For example, in a case that the bit length of the first indication field is 1, when the first indication field indicates a first code point (e.g., code point 1), the first indication field indicates that the terminal uses enabling feedback information binding; when the first indication field indicates other code points except the first code point (e.g., code point 0), the first indication field indicates that the terminal does not use the enabling feedback information binding. The first code point may also be 0, and then other code points except the first code point are 1, which is not limited herein.

In a specific implementation, the first indication field indicates whether the terminal enables feedback information binding or not when the bit length of the first indication field is an integer greater than 1.

For example, the size of the first indication field is 2 bits, the first indication field corresponds to four code points, that is, 00, 01, 10, and 11, any one of the four code points may be configured to serve as a second code point to indicate that the terminal does not enable feedback information binding, and the remaining code points are used to indicate that the terminal enables feedback information binding and indicate different values of M. For example, when the first indication field indicates the configured second code point (for example, the second code point is 00), the terminal does not enable feedback information binding; and when the code point indicated by the first indication domain is other code points (such as code points 01, 10 and 11) except the second code point, the terminal starts feedback information binding. The other code points 01, 10, and 11 except the second code point may indicate different values of M, or the same value of M, or a null value of M. When other code points indicate different values of M, code point 01 corresponds to the bundle size 2, code point 10 corresponds to the bundle size 4, and code point 11 corresponds to the bundle size 8. When other code points indicate an empty value of M, for example, the code point 11 corresponds to an empty value of M, the code point 11 is invalid, and at this time, a default bundle size is adopted, and the default bundle size is set by a higher layer or defined by a protocol (for example, the default limit is that the bundle size is 1).

S202, if the first indication domain indicates that the feedback information binding is enabled, performing logic and calculation on M feedback information to generate feedback information, wherein the value of M is determined by the first indication domain and/or the indication domain for changing the purpose and/or the binding information domain.

Wherein the indication field of the change use may be at least one of: a Physical Downlink Shared Channel (PDSCH) repetition number field, a Physical Downlink Control Channel (PDCCH) repetition number field, a physical resource block bundling size indicator (CBGTI), a Redundancy Version (RV), a Modulation and Coding Scheme (MCS), a code block group transmission information field (CBGTI), a code block group flushing information field (CBGFI), a carrier indication field, a bandwidth unit indication field, a time domain resource allocation field, a reserved resource field, an HARQ process number field, a downlink allocation indication (SRS) field, an HARQ to feedback timing field, a PDSCH to antenna port field, a transmission configuration indication (transmission configuration indication, CSI) field, a CSI to detection Channel (CSI) request field, a CSI-transmission request field (SRS-transmission request field, a CSI-transmission configuration information field, a CSI-transmission request field, a CSI-transmission-configuration information field, a MCS-transmission-configuration information field, a CSI-transmission-configuration-transmission-configuration-information-field, a transmission-configuration-transmission-information-transmission-information-transmission-, A Physical Uplink Control Channel (PUCCH) power control field, a PUCCH resource indication field, a Physical Uplink Shared Channel (PUSCH) resource indication field, or other indication fields, which are not limited herein.

Wherein, the value range of one M is a positive integer.

In a specific implementation, a value of M may be determined by the first indication field; may be determined by the indicated field of the alteration use; may be determined by the binding information field; the information field may be determined by any combination of the above indication fields and information fields, and will not be described in detail herein.

For example, in the case that the terminal enables feedback information binding, a 1-bit indication field in the repetition frequency field of the physical downlink shared channel corresponds to two

code points

0 and 1. The two code points correspond to two values of M, which may be the same value or different values. Considering that the support of HARQ-bundling in the current case of a small number of repeated PDSCH transmissions may be supported in NR-light, the repetition number field of the physical downlink shared channel may exist.

Wherein, the M pieces of feedback information are feedback information of whether the terminal correctly decodes the PDSCH.

In a specific implementation, if the first indication field indicates that the feedback information binding is enabled, a specific implementation manner of performing logic and computation on M pieces of feedback information to generate one piece of feedback information is as follows: and calculating the M pieces of feedback information according to the bit phase and generating one piece of feedback information, wherein the one piece of feedback information is used for indicating the base station to reschedule the corresponding PDSCH of the M pieces of feedback information.

For example, as shown in fig. 1C, the DCI in

subframes

0, 1, 2, and 3 schedules PDSCH in

subframes

2,3, 4, and 5, and the feedback information of these 4 PDSCHs is transmitted in subframe 3 (subframe 3 corresponding to time t 7) of the next system frame by using HARQ-bundling. If the PDSCHs in the 4 subframes are all decoded correctly, i.e. 4 positive Acknowledgements (ACKs) (1, 1, 1, 1), the logical and calculation of the 4 positive acknowledgements (1, 1, 1, 1) synthesizes 1-bit information, and the result is 1, i.e. ACK is fed back in subframe 3, i.e. one feedback information generated at this time is that the PDSCHs in the 4 subframes are all decoded correctly. The above calculation formula of the logical and of the 4 positive acknowledgements (1, 1, 1, 1) is:

Q＝1&1&1&1＝1。

for another example, as shown in fig. 1C, the DCI in

subframes

0, 1, 2, and 3 schedules PDSCH in

subframes

2,3, 4, and 5, and the feedback information of these 4 PDSCHs is transmitted in subframe 3 of the next system frame by using HARQ-bundling. If the PDSCHs of the

sub-frames

0, 1 and 2 are decoded correctly and the PDSCH of the sub-frame 3 is decoded incorrectly, the 4 feedback responses are the logical and calculation of (1, 1, 1, 0), and 1 bit of information is synthesized, and the result is 0, that is, ACK is fed back in the sub-frame 3, that is, one feedback information generated at this time is the feedback information of the PDSCH decoding error in the 4 sub-frames, and that one feedback information generated at this time instructs the base station to retransmit the PDSCH in the 4 sub-frames. The above-mentioned 4 answers (1, 1, 1, 0) logical and formula is:

Q＝1&1&1&0＝0。

it can be seen that, in the embodiment of the present application, a first indication field in downlink control information is analyzed by receiving the downlink control information, where the first indication field is used to indicate whether to enable feedback information binding; and if the first indication domain indicates that the feedback information binding is enabled, executing logic and calculation on M feedback information to generate feedback information, wherein the value of M is determined by the first indication domain and/or the indication domain for changing the purpose and/or the binding information domain. In the embodiment of the application, when the first indication domain indicates that the feedback information binding is enabled, performing logic and calculation on M pieces of feedback information determined by the first indication domain and/or the indication domain for changing the use and/or the binding information domain to generate one piece of feedback information, thereby solving the problem of feedback information bundle size indication in NR-light.

In one possible example, the value of M is determined by the first indication field.

In one possible example, the first indication field jointly indicates whether the feedback information binding and the value information of M are enabled.

In a specific implementation, a first code point of the plurality of code points corresponding to the first indication domain is used to indicate that the terminal does not enable feedback information binding, and each of the other code points except the first code point is used to indicate that the terminal enables feedback information binding and corresponds to a value of M configured at a high level. If the first indication field is 1 bit long, code point 0 indicates that feedback information binding is not enabled, code point 1 indicates that feedback information binding is enabled, and the M value used by the feedback information binding is a high-level configured value.

When the bit length of the first indication field is greater than 1, the values of M of the high-level configuration may be the same, may be different, or may be null. For example, a 2-bit first indication field, where a first code point of the plurality of code points in the first indication field is 00, and the remaining code points except the first code point are 3 non-all 0 code points: 01, 10, 11. In this case, the 3 non-all-0 code points need to correspond to 3M values, but actually, only two M values may be configured in the higher layer, where one non-all-0 code point corresponds to an empty M value, or the code point corresponding to an empty M value defaults to have a corresponding M value as a preset value, where the preset value may be 1, 2,3, or other positive integers, and details thereof are not described here.

In one possible example, in case that the bit length of the first indication field is 1, the first code point indicates that feedback information binding is not enabled; and other code points except the first code point represent that feedback information binding is started, and the value of M corresponds to a value configured at a high layer.

The value of M may be a positive integer greater than 0, and the value of M may be a preset value of a protocol, and may be a value of high-level semi-static configuration.

For example, when the first indication field is 1 bit long, the first code point 0 indicates that feedback information binding is not enabled, other code points except the first code point, that is, code point 1, indicate that feedback information binding is enabled, and the M value used by feedback information binding is a higher-layer configured value.

For another example, when the first indication field is 1 bit long, the first code point 1 indicates that feedback information binding is not enabled, the other code points except the first code point, that is, code point 0, indicate that feedback information binding is enabled, and the M value used by feedback information binding is a higher-layer configured value.

It can be seen that, in the embodiment of the present application, the value of M is determined by the first indication field in DCI, so as to solve the problem of indication of the feedback information bundle size in NR-light, and improve the transmission efficiency of data.

In one possible example, in case that the bit length of the first indication field is greater than 1, the first code point indicates that feedback information binding is not enabled; and other code points except the first code point represent that feedback information binding is started, and the other code points except the first code point respectively correspond to a value of M configured at a high layer.

The value of M may be a preset value of a protocol, and may be a value of a high-level semi-static configuration. The values of M of the high-level configuration may be the same, may be different, or may be null. For example, a 2-bit first indication field, where a first code point of the plurality of code points in the first indication field is 00, and the remaining code points except the first code point are 3 non-all 0 code points: 01, 10, 11. In this case, the 3 non-all-0 code points need to correspond to 3M values, but actually, only two M values may be configured in the high layer, where one non-all-0 code point corresponds to an empty M value, or the code point corresponding to an empty M value defaults to have a corresponding M value as a preset value, where the preset value may be 1, 2,3, or another positive integer, and details thereof are not repeated here.

For another example, all values of M of the high-level configuration corresponding to the first indication domain are not null, as shown in table 1 below, a second code point of the plurality of code points of the first indication domain is 00, the code point 00 indicates that the terminal does not start feedback information binding, and the remaining code points except the second code point are 3 non-all-0 code points: 01, 10 and 11 indicate the terminal to start feedback information binding and respectively indicate the values of three M.

TABLE 1

It can be seen that, in the embodiment of the present application, the value of M is determined by the first indication field whose bit length in DCI is greater than 1, so that more bundlesizes can be indicated, a terminal can use different bundlesizes flexibly, the problem of indication of feedback information bundlesizes in NR-light is solved, and data transmission efficiency is improved.

In one possible example, the value of M is determined by the indication field of the change use.

Wherein, the number of the indication fields for changing the use can be one or more.

It can be seen that, in the embodiment of the present application, the value of M is determined by the indication field for changing the usage, DCI resources are saved, the problem of feedback information bundle size indication in NR-light is solved, and data transmission efficiency is improved.

In one possible example, when the first indication field indicates that feedback information binding is enabled and the number of the indication fields for change purpose is 1, the value of M is determined by a second indication field, and a bit length N of the second indication field is less than or equal to a bit length L of the indication field for change purpose.

Wherein N is a positive integer and L is a positive integer. When the first indication field indicates that the feedback information binding is enabled, the bit length of the second indication field is N, and the length of the original use indication field of the use-changed indication field is switched to L-N. The bit source of the second indication field is part or all of the bits of the indication field for changing use.

In a specific implementation, when the first indication field indicates that feedback information binding is enabled and the number of the indication fields for change purpose is 1, the second indication field is a part of bits or all bits of the indication field for change purpose, as shown in fig. 2B, where fig. 2B is a schematic diagram of the second indication field. Part of bits represent an indication field for changing the use and are changed into L-N bits from the original L bits, and the separated N bits are used for indicating the value of M. All bits represent the indication field for changing the use from the original L bit to 0 bit, namely the field no longer exists, and the separated L bit is used for indicating the value of M.

It should be further explained that, when the second indication field is all of the one change-purpose indication field, that is, the bit length N of the second indication field is equal to the bit length L of the one change-purpose indication field, the second indication field may be any one of the following indication fields: the physical uplink shared channel resource allocation method comprises a PDSCH repetition number field, a PDCCH repetition number field, a physical resource block binding size indicator, a redundancy version RV, a modulation coding scheme MCS, a code block group transmission information field CBGTI, a code block group refreshing information field CBGFI, a carrier indication field, a bandwidth unit indication field, a time domain resource allocation field, a reserved resource field, an HARQ process number field, a downlink allocation indication DAI field, a PDSCH-to-HARQ feedback timing field, an antenna port field, a transmission configuration indication TCI field, a sounding reference signal SRS request field, a channel state information CSI request field, a physical uplink control channel PUCCH power control field, a PUCCH resource indication field, a physical uplink shared channel PUSCH resource indication field, or other indication fields, wherein the limitation is not performed.

It can be seen that, in the embodiment of the present application, when the first indication field indicates that feedback information binding is enabled, and the number of the indication fields for changing the usage is 1, the value of M is determined by the second indication field, so that the problem of indicating the feedback information bundle size at NR-light is solved, DCI resources are saved, and data transmission efficiency is improved.

In one possible example, the value of M is determined by the second indication field, specifically: the value of M is determined by N bits of information in the second indication domain, wherein N is larger than or equal to 1, and 2^ N code points of N bits correspond to 2^ N M values configured at a high layer.

Wherein, the 2^ N M values configured by the high layer can be the same, can be different or are null.

In a specific implementation, the value of M is determined by 2^ N code points corresponding to N-bit information in the second indication domain.

In one possible example, each of the N bits of 2^ N code points corresponds to an M value.

The value of M may be a preset value of a protocol, and may be a value of a high-level semi-static configuration. The values of M of the high-level configuration may be the same, may be different, or may be null. For example, the second indication field is 2 bits, the first code point of 4 code points of 2 bits of the second indication field is 00, and the rest code points except the first code point are 3 non-all 0 code points: 01, 10, 11. In this case, the 3 non-all-0 code points need to correspond to 3M values, but actually, only two M values may be configured in the high layer, where one non-all-0 code point corresponds to an empty M value, or the code point corresponding to an empty M value defaults to have a corresponding M value as a preset value, where the preset value may be 1, 2,3, or another positive integer, and details thereof are not repeated here.

In one possible example, each of the N-bit 2^ N code points corresponds to information of the number of repetitions of a physical downlink shared channel and the M value, where the number of repetitions of the physical downlink shared channel and the M value include one physical downlink shared channel and one M value.

In a specific implementation, the first indication field is used to indicate whether the terminal starts feedback information binding, the value of M is determined by the second indication field, and each of 2^ N code points of N bits in the second indication field corresponds to information of the repetition times and the value of M of a group of physical downlink shared channels.

Specifically, when the code point change of the feedback information binding indicator changes only the value of M, and the number of repetitions of the PDSCH is not changed, the value of M is determined by the second indication field.

For example, the first indication field is a feedback information bundling indicator (HARQ-ACK bundling flag), the information amount of the second indication field is 2 bits, and the second indication field is partial or all bit information of the PDSCH repetition field. Taking the second indication field as all bit information of the PDSCH repetition field as an example, if the HARQ-ACK bundling flag is equal to 0, the 2 bits in the PDSCH repetition field of the physical downlink shared channel indicate the number of PDSCH repetitions (repetition number), at this time, the value of M is default to 1, that is, the bundle size is equal to 1, as shown in table 2 below:

TABLE 2

And if the HARQ-ACK bundling flag is 1, the PDSCH repetition domain indicates the PDSCH repetition times and the value of M, and when the value of M is a Bundle size feedback information binding indicator 1, the preconfigured value column of M, namely the Bundle size column, is activated.

As shown in table 3 below, when the HARQ-ACK bundling flag is 1 and the code point of the second indication field is 00, and the PDSCH repetition field of the DCI indicates that the number of PDSCH repetitions is 1, the value of M corresponding to this time is 4, that is, the bundle size is 4. That is, under the condition that the HARQ-ACK bundling flag is 1 and the code point of the second indication field is 00, at least 4 PDSCH transmissions with repetition number of 1 are fed back in the same uplink subframe.

TABLE 3

Specifically, when the value of M and the number of repetitions of the PDSCH are changed by a change in the code point of the feedback information bundling indicator, the value of M is determined by the second indication field.

For example, the first indication field is a feedback information bundling indicator (HARQ-ACK bundling flag), the second indication field is partial or all bit information of the PDSCH repeating field, and as shown in table 4 below, if the HARQ-ACK bundling flag is equal to 1, the PDSCH repeating field indicates the number of PDSCH repetitions and a value of the default M. As shown in table 5 below, if the HARQ-ACK bundling flag is equal to 1, the PDSCH repetition domain indicates the preconfigured PDSCH repetition number and the preconfigured value of M, that is, when the HARQ-ACK bundling flag is equal to 1, the terminal activates the preconfigured value column of M, that is, activates the bundle size column, and switches the PDSCH repetition number into the preconfigured column corresponding to the value of M, where the value of M is the bundle size.

TABLE 4

TABLE 5

It can be seen that, in the embodiment of the present application, when the first indication field indicates that feedback information binding is enabled, and the number of the indication fields for changing the usage is 1, the value of M is determined by the second indication field, and each code point of the N-bit 2^ N code points of the second indication field corresponds to the information of the repetition frequency and the value of M of a group of physical downlink shared channels, so that the problem of feedback information bundle size indication at NR-light is solved, the transmission efficiency of data is improved, and the resources of the indication fields are saved.

In one possible example, in a case that the first indication field indicates that feedback information binding is enabled, and the number of the indication fields for change use is multiple, the value of M is determined by all or part of bits in the multiple indication fields for change use.

In a specific implementation, when the first indication field indicates that feedback information binding is enabled and the number of the indication fields for changing the purpose is multiple, the value of M is determined by all bits in the indication fields for changing the purpose.

In a specific implementation, when the first indication field indicates that feedback information binding is enabled and the number of the indication fields for changing the purpose is multiple, the value of M is determined by a part of bits in the indication fields for changing the purpose.

In a possible example, the value of M is determined by all or a part of bits in the indication fields of the plurality of modification usages, specifically: the value of M is determined by a third indication field composed of all bits in the plurality of indication fields for changing the use; or the value of M is determined by a third indication field indication composed of partial bits in the plurality of indication fields for changing the use.

Wherein, the size of the partial bit of each indication field in the plurality of indication fields for changing use can be the same or different. The third indication field is formed by partial bits in the plurality of change-purpose indication fields,

for example, as shown in fig. 2C, fig. 2C is a schematic diagram of a third indication field, in which the number of the multiple indication fields for modification purpose is 2, where the two indication fields for modification purpose are a PDSCH repetition field and a PDCCH repetition field, and the third indication field is a combination of 1 bit in the PDSCH repetition field and the PDCCH repetition field, that is, the size of the third indication field is 2 bits. The indication field of the change purpose is not limited to the PDSCH repetition field and the PDCCH repetition field, and the method of the present example is described here as an example only.

Wherein the third indication field is composed of all bits in the plurality of change-purpose indication fields.

For example, as shown in fig. 2D, fig. 2D is a schematic diagram of another third indication field, in which the number of the multiple indication fields for change use is 2, where the two indication fields for change use are a redundancy version RV field and a physical resource block bundling size indicator, and the third indication field is a sum of 2 bits of the redundancy version RV field and 1 bit of the physical resource block bundling size indicator, that is, the size of the third indication field is 3 bits. The indication field of the change use is not limited to the redundancy version RV field and the physical resource block bundling size indicator, and the method of the present example is described here as an example.

The size of the third indication domain is N bits, 2^ N code points of the N bits correspond to 2^ N M values configured at the high layer, and N is the sum of all or part of the bit numbers in the indication domains for multiple modification purposes.

It can be seen that, in the embodiment of the present application, the value of M is determined by the third indication field composed of all or part of bits in the multiple indication fields for changing the usage, so as to solve the problem of bundle size indication of the feedback information in NR-light, improve the transmission efficiency of data, and save the resources of the indication fields.

In a possible example, the value of M is determined by a third indication field indication composed of a part of bits in the plurality of indication fields for changing the usage, specifically: the value of M is determined by a third indication domain of N-bit information consisting of partial bits in the indication domains with multiple modification purposes, wherein 2^ N code points with N bits correspond to 2^ N M values configured at a high layer, and N is the sum of the partial bit numbers in the indication domains with multiple modification purposes.

In particular, the specific type of the value of M of the high-level configuration refers to the description in the foregoing example, and is not described here.

In a possible example, the value of M is determined by a third indication field indication composed of all bits in the plurality of indication fields for changing the usage, specifically: the value of M is determined by a third indication domain of N-bit information consisting of all bits in the indication domains with multiple modification purposes, wherein 2^ N code points with N bits correspond to 2^ N M values configured at a high layer, and N is the sum of all the bit numbers in the indication domains with multiple modification purposes.

For example, the first indication field is a feedback information bundling indicator (HARQ-ACK bundling flag), and the third indication field is a sum of all bits 2 of the RV field and all bits 1 of the physical resource block bundling size indicator, that is, the size of the third indication field is 3 bits, and corresponds to 8 code points. As shown in table 6, if the HARQ-ACK bundling flag is equal to 0, these reused bits in the third indication field are still used for the original indication function, the bit length corresponding to the third indication field is 0, that is, the third indication field does not exist, and at this time, the value of M is defaulted to 1, that is, the bundle size is equal to 1. As shown in table 7, if the HARQ-ACK bundling flag is equal to 1, the size of the third indication field is 3 bits and corresponds to 8 code points, and the 8 code points of the third indication field respectively correspond to a value of M, where the values of M may be the same, may be different, or may be null.

TABLE 6

Feedback information binding indicator	Code point of third indication field	Value of M
			0	-	1

TABLE 7

It can be seen that, in the embodiment of the present application, the value of M is determined by 2^ N code points of N bits in the third indication field composed of all bits in the multiple indication fields for changing the usage, so as to solve the problem of indicating the feedback information bundle size in NR-light, and improve the transmission efficiency of data. In one possible example, each of the N bits of 2^ N code points corresponds to an M value.

In one possible example, the value of M is determined by the binding information field.

Each code point in the plurality of code points corresponding to the binding information domain corresponds to one value of the M, wherein the value of the M is a value configured by a high layer.

It can be seen that, in the embodiment of the present application, the value of M is indicated and determined by the binding information field, so that the problem of indicating the feedback information bundle size in NR-light is solved, and the data transmission efficiency is improved.

In one possible example, in the first indication field indicating that feedback information binding is enabled, the value of M is determined by N-bit information in the binding information field, where 2^ N code points of N bits correspond to 2^ N M values configured by a higher layer.

Wherein each of the 2^ N code points corresponds to an M value. The values of M of the high-level configuration may be the same, may be different, or may be null. For example, the binding information field with 2 bits, where a first code point of the plurality of code points of the binding information field is 00, and the rest code points except the first code point are 3 non-all 0 code points: 01, 10, 11. In this case, the 3 non-all-0 code points need to correspond to 3M values, but actually, only two M values may be configured in the high layer, where one non-all-0 code point corresponds to an empty M value, or the code point corresponding to an empty M value defaults to have a corresponding M value as a preset value, where the preset value may be 1, 2,3, or another positive integer, and details thereof are not repeated here.

It can be seen that, in the embodiment of the present application, the value of M is indicated and determined by 2^ N code points of N bits of the binding information field, so as to solve the problem of indicating the feedback information bundle size at NR-light and improve the transmission efficiency of data.

Referring to fig. 3, please refer to fig. 3 in accordance with the embodiment shown in fig. 2A, where fig. 3 is a schematic flowchart of a method for transmitting feedback information according to an embodiment of the present application, where the method for transmitting feedback information includes:

s301, receiving downlink control information, and analyzing a first indication domain in the downlink control information, wherein the first indication domain is used for indicating whether feedback information binding is enabled.

S302, determining the value of M through a second indication domain in the indication domain for changing the use, wherein the second indication domain is all bits or part of bits of the indication domain for changing the use.

S303, if the first indication domain indicates that the feedback information binding is enabled, performing logic and calculation on the M feedback information to generate one feedback information.

It can be seen that, in the embodiment of the present application, a value of M is determined by analyzing a first indication field in downlink control information and a second indication field in an indication field for changing a purpose, where the second indication field is all bits or part of bits of the first indication field for changing a purpose, so as to solve the problem of indicating feedback information bundle size in NR-light and improve data transmission efficiency.

In one possible example, please refer to fig. 4, fig. 4 is a schematic structural diagram of an electronic device 400 according to an embodiment of the present application, and as shown in the figure, the electronic device 400 includes an application processor 410, a memory 420, a communication interface 430, and one or more programs 421, where the one or more programs 421 are stored in the memory 420 and configured to be executed by the application processor 410, and the one or more programs 421 include instructions for performing the following steps:

In one possible example, in case the bit length of the first indication field is greater than 1, the second code point indicates that feedback information binding is not enabled; and the other code points except the second code point represent the starting of feedback information binding, and each of the other code points except the second code point corresponds to a value of M configured at a high layer.

It can be seen that, in the embodiment of the present application, through the first indication field and/or the M pieces of feedback information determined by the indication field for changing the purpose and/or the binding information field, a logic and a calculation are performed to generate one piece of feedback information, so as to solve the problem of indicating the feedback information bundle size at NR-light, and improve the transmission efficiency of data.

The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It is understood that the electronic device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative elements and algorithm steps described in connection with the embodiments provided herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the electronic device may be divided into the functional units according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 5 is a block diagram of functional units of a device 500 for transmitting feedback information according to an embodiment of the present application. The apparatus 500 for transmitting feedback information includes: a processing unit 501 and a communication unit 502, wherein,

the processing unit 501 is configured to receive downlink control information, and analyze a first indication field in the downlink control information, where the first indication field is used to indicate whether to enable feedback information binding; and the processing unit is further configured to perform logic and computation on M feedback information to generate one feedback information if the first indication field indicates that the feedback information binding is enabled, wherein a value of M is determined by the first indication field and/or an indication field for changing the purpose and/or a binding information field.

The apparatus 500 for transmitting feedback information may further include a storage unit 503 for storing program codes and data of the electronic device. The processing unit 501 may be a processor, a touch display screen or a receiver, and the storage unit 503 may be a memory.

In one possible example, in case that the bit length of the first indication field is greater than 1, the second code point indicates that feedback information binding is not enabled; and the other code points except the second code point represent the starting of feedback information binding, and each of the other code points except the second code point corresponds to a value of M configured at a high layer.

Embodiments of the present application also provide a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, the computer program enabling a computer to execute part or all of the steps of any one of the methods described in the above method embodiments, and the computer includes an electronic device.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, the computer comprising an electronic device.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

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

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

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

The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A method for transmitting feedback information, which is applied to a terminal, the method comprising:

2. The method of claim 1, wherein a value of the M is determined by the first indicator field.

3. The method of claim 2, wherein the first indication field jointly indicates whether the feedback information binding and value information of M are enabled.

4. The method of claim 3, wherein in a case that the bit length of the first indication field is 1, a first code point indicates that feedback information binding is not enabled; and other code points except the first code point represent that feedback information binding is started, and the value of M corresponds to a value configured at a high layer.

5. The method of claim 3, wherein in a case that the bit length of the first indication field is greater than 1, the second code point indicates that feedback information binding is not enabled; and the other code points except the second code point represent the starting of feedback information binding, and each of the other code points except the second code point corresponds to a value of M configured at a high layer.

6. The method of claim 1, wherein a value of M is determined by the indication field of the change purpose.

7. The method according to claim 6, wherein in a case that the first indication field indicates that feedback information binding is enabled and the number of the indication fields for change purpose is 1, a value of M is determined by a second indication field, and a bit length N of the second indication field is smaller than or equal to a bit length L of the one indication field for change purpose.

8. The method of claim 7,

the value of M is determined by the second indication field, specifically:

the value of M is determined by N bits of information in the second indication domain, wherein N is larger than or equal to 1, and 2^ N code points of N bits correspond to 2^ N M values configured at a high layer.

9. The method of claim 8, wherein each of the N bits of 2^ N code points corresponds to an M value.

10. The method of claim 8, wherein each of the N bits of 2^ N code points corresponds to information of a repetition number and an M value of a set of physical downlink shared channels, and wherein the repetition number and the M value of the set of physical downlink shared channels comprise a repetition number and an M value of a physical downlink shared channel.

11. The method of claim 6,

and when the first indication field indicates that feedback information binding is enabled and the number of the indication fields for changing the purposes is multiple, the value of M is determined by all or part of bits in the indication fields for changing the purposes.

12. The method of claim 11,

the value of M is determined by all or part of the bits in the plurality of indication fields for changing the usage, specifically:

the value of M is determined by a third indication field composed of all bits in the plurality of indication fields for changing the use; or

The value of M is determined by a third indication field composed of partial bits in the plurality of indication fields for changing the use.

13. The method according to claim 12, wherein the value of M is determined by a third indication field indication composed of a part of bits in the plurality of indication fields for change use, specifically:

the value of M is determined by a third indication domain of N-bit information consisting of partial bits in the indication domains with multiple modification purposes, wherein 2^ N code points with N bits correspond to 2^ N M values configured at a high layer, and N is the sum of the partial bit numbers in the indication domains with multiple modification purposes.

14. The method of claim 13, wherein each of the N-bit 2^ N code points corresponds to an M value.

15. The method according to claim 12, wherein the value of M is determined by a third indication field indication composed of all bits in the plurality of indication fields for change use, specifically:

the value of M is determined by a third indication domain of N-bit information consisting of all bits in the indication domains with multiple modification purposes, wherein 2^ N code points with N bits correspond to 2^ N M values configured at a high layer, and N is the sum of all the bit numbers in the indication domains with multiple modification purposes.

16. The method of claim 15, wherein each of the N-bit 2^ N code points corresponds to an M value.

17. The method of claim 1, wherein the value of M is determined by the binding information field.

18. The method of claim 17,

and indicating to enable feedback information binding in the first indication domain, wherein the value of M is determined by N-bit information in the binding information domain, and 2^ N code points of N bits correspond to 2^ N M values configured at a high layer.

19. An apparatus for transmitting feedback information, applied to a terminal, the apparatus comprising: a processing unit and a communication unit, wherein,

20. The apparatus of claim 19, wherein a value of M is determined by the first indicator field.

21. The apparatus of claim 20, wherein the first indication field jointly indicates whether the feedback information binding and value information of M are enabled.

22. The apparatus of claim 21, wherein in a case that a bit length of the first indication field is 1, a first code point indicates that feedback information binding is not enabled; and other code points except the first code point represent that feedback information binding is started, and the value of M corresponds to a value configured at a high layer.

23. The apparatus of claim 21, wherein in a case that a bit length of the first indication field is greater than 1, a second code point indicates that feedback information binding is not enabled; and the other code points except the second code point represent the starting of feedback information binding, and each of the other code points except the second code point corresponds to a value of M configured at a high layer.

24. The apparatus of claim 19, wherein the value of M is determined by the indication field of the change purpose.

25. The apparatus of claim 24, wherein in a case that the first indication field indicates that feedback information binding is enabled and the number of the indication fields for change purpose is 1, a value of M is determined by a second indication field, and a bit length N of the second indication field is smaller than or equal to a bit length L of the one indication field for change purpose.

26. The apparatus of claim 25,

the value of M is determined by the second indication field, specifically:

27. The apparatus of claim 26, wherein each of the N-bit 2^ N code points corresponds to an M value.

28. The apparatus of claim 26, wherein each of the N-bit 2^ N code points corresponds to information of the number of repetitions of a set of pdcch and the M value, and wherein the number of repetitions of the set of pdcch and the M value comprise one pdcch and one M value.

29. The apparatus of claim 24,

30. The apparatus of claim 29,

the value of M is determined by a third indication field composed of all bits in the plurality of indication fields for change purpose, or

31. The apparatus according to claim 30, wherein the value of M is determined by a third indication field indication composed of a part of bits in the plurality of indication fields for change purpose, specifically:

32. The apparatus of claim 31 wherein each of the N-bit 2^ N code points corresponds to an M value.

33. The apparatus according to claim 30, wherein the value of M is determined by a third indication field indication composed of all bits in the plurality of indication fields for change purpose, specifically:

34. The apparatus of claim 30, wherein each of the N-bit 2^ N code points corresponds to an M value.

35. The apparatus of claim 19, wherein the value of M is determined by the binding information field.

36. The apparatus of claim 35,

37. A terminal comprising a processor, memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps in the method of any of claims 1-18.

38. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1-18.

39. A computer-readable storage medium, characterized in that it stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1-18.

40. A computer program for causing a computer to perform the method of any one of claims 1 to 18.