WO2020164149A1

WO2020164149A1 - Data transmission method and device

Info

Publication number: WO2020164149A1
Application number: PCT/CN2019/075290
Authority: WO
Inventors: 余政; 毕文平
Original assignee: 华为技术有限公司
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2020-08-20
Also published as: CN113424615A; CN113424615B

Abstract

A data transmission method and device. Embodiments of the preset application provide a data transmission method, comprising: a first communication device receives first information sent by a second communication device, wherein the first information comprises X bits and X is a positive integer; at least one bit state in bit states corresponding to the X bits can be used for indicating that control information sent by the second communication device is used for scheduling of a single transmission block; at least one bit state in the bit states corresponding to the X bits can be used for indicating that the control information is used for first scheduling; the first communication device determines the number of transmission blocks scheduled by the control information according to the bit state of the first information, and determines the sizes of transmission blocks scheduled by the control information according to the control information; the first communication device receives data sent by the second communication device according to the determined number of the transmission blocks and sizes of the transmission blocks, or the first communication device sends data to the second communication device according to the determined number of the transmission blocks and sizes of the transmission blocks.

Description

Data transmission method and equipment

Technical field

The embodiments of the present application relate to the field of communications, and in particular, to a data transmission method and device.

Background technique

In a communication system, usually one control information (CI) schedules one transport block (TB). The data channel may be a physical downlink data channel or a physical uplink data channel.

In order to reduce the overhead of CI transmission and save transmission resources, one CI can be used to schedule multiple data channels, or one CI can be used to schedule multiple transmission blocks.

When a CI schedules multiple transmission blocks, the CI needs to indicate the number of scheduled transmission blocks and whether each transmission block is successfully received. For example, when a CI schedules 8 transmission blocks, the CI requires 8 bits to indicate the number of scheduled transmission blocks according to the bitmap indication, and 8 bits are needed to indicate whether each transmission block is successfully received according to the bitmap indication. In this way, a maximum indication overhead of 8+8=16 bits is required.

In the prior art, when a CI schedules multiple transmission blocks, the CI needs to indicate more information, and therefore requires more indication overhead.

In the foregoing prior art, the bit overhead of the CI scheduling transport block is too large. Especially considering the high reliability of the control channel performance, too much bit overhead requires more transmission resources. How to reduce the indication overhead of the CI scheduling transport block is still waiting for solution.

Summary of the invention

The embodiments of the present application provide a data transmission method and device, which are used to reduce the indication overhead of a CI scheduling transmission block and reduce the occupation of transmission resources.

To solve the above technical problems, the embodiments of the present application provide the following technical solutions:

In a first aspect, an embodiment of the present application provides a data transmission method, including: a first communication device receives first information sent by a second communication device; wherein, the first information includes X bits, and X is a positive integer; At least one of the bit states corresponding to the X bits can be used to indicate that the control information sent by the second communication device is used for scheduling a single transmission block; at least one bit of the bit states corresponding to the X bits The status can be used to indicate that the control information is used for the first scheduling, where the first scheduling means that the control information can schedule multiple transmission blocks, and there are newly transmitted transmission blocks in all transmission blocks that can be scheduled by the control information. Transmission blocks and retransmitted transmission blocks; the first communication device determines the number of transmission blocks scheduled by the control information according to the bit status of the first information, and determines the number of transmission blocks scheduled by the control information according to the control information The size of the transmission block; the first communication device receives the data sent by the second communication device according to the determined number of transmission blocks and the size of the transmission block, or the first communication device according to the determined transmission block size The number and the size of the transmission block are sent to the second communication device.

It can be seen from the example description of the application in the foregoing embodiment that, in order to enable the first communication device to obtain the number of transmission blocks determined by the second communication device, the second communication device may generate a first message and send the first message to The first communication device, so that the first communication device can obtain the number of transmission blocks determined by the second communication device according to the received first information. In order to save the instruction overhead of the control information, the first information generated by the second communication device in the embodiment of the present application may be used to indicate that the control information is used for scheduling of a single transmission block or used for the first scheduling. In the embodiments of the present application, the bit overhead of control information can be optimized, and the transmission performance of control information can be improved.

In a possible design of the first aspect, the method further includes: the first communication device receives high-level signaling sent by the second communication device, where the high-level signaling includes the first information; or, The first communication device receives control information sent by the second communication device, where the control information includes the first information.

Wherein, after the second communication device generates the first information, the second communication device may use multiple methods to send the first information. For example, the second communication device may use high-level signaling, which may include the first information, so that the first communication device may receive the high-level signaling, and the first information generated by the second communication device may be obtained by parsing the high-level signaling . For example, the high-level signaling may include: RRC signaling. In addition, the second communication device may use physical layer signaling, which may include the first information, so that the first communication device can receive the physical layer signaling, and the second communication device can be obtained by parsing the physical layer signaling The first message generated. For example, the physical layer signaling may be the aforementioned control information, and further, the control information may include the first information.

In a second aspect, an embodiment of the present application further provides a data transmission method, including: a second communication device determines the number of transmission blocks scheduled by control information, and the second communication device determines that the control information determines the scheduled transmission block The second communication device generates the first information and sends the first information to the first communication device. The bit status of the first information indicates the number of transmission blocks scheduled by the control information, and the first information The bit status of a piece of information indicates the number of transmission blocks scheduled by the control information; wherein, the first piece of information includes X bits, and X is a positive integer; and the bit status corresponding to the X bits has at least one bit The status can be used to indicate that the control information sent by the second communication device is used for the scheduling of a single transmission block; at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first Scheduling, where the first scheduling refers to that the control information can schedule multiple transmission blocks, and there are newly transmitted transmission blocks and retransmitted transmission blocks in all transmission blocks that can be scheduled by the control information; the second The communication device receives the data sent by the first communication device according to the determined number of transmission blocks and the size of the transmission block, or the second communication device sends data to the first communication device according to the determined number of transmission blocks and the size of the transmission block. The first communication device sends data.

It can be seen from the example description of the application in the foregoing embodiment that, in order to enable the first communication device to obtain the number of transmission blocks determined by the second communication device, the second communication device may generate a first message and send the first message to The first communication device, so that the first communication device can obtain the number of transmission blocks determined by the second communication device according to the received first information. In order to save the instruction overhead of the control information, the first information generated by the second communication device in the embodiment of the present application may be used to indicate that the control information is used for scheduling of a single transmission block or for the first scheduling. In the embodiments of the present application, the bit overhead of control information can be optimized, and the transmission performance of control information can be improved.

In a possible design of the second aspect, the method further includes: the second communication device sends high-layer signaling to the first communication device, where the high-layer signaling includes the first information; or, The second communication device sends control information to the first communication device, where the control information includes the first information.

In a third aspect, an embodiment of the present application provides a communication device, the communication device is specifically a first communication device, and the first communication device includes: a receiving module configured to receive first information sent by a second communication device; wherein The first information includes X bits, and X is a positive integer; at least one of the bit states corresponding to the X bits can be used to indicate that the control information sent by the second communication device is used for a single transmission block Scheduling; at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first scheduling, where the first scheduling means that the control information can schedule multiple transmission blocks , And there are newly transmitted transmission blocks and retransmitted transmission blocks in all transmission blocks that can be scheduled by the control information; a processing module, configured to determine the transmission block scheduled by the control information according to the bit status of the first information The number of transmission blocks and the size of the transmission block scheduled by the control information are determined according to the control information; the receiving module is further configured to receive the second communication device according to the determined number of transmission blocks and the size of the transmission block The sent data, or the sending module, is used to send data to the second communication device according to the determined number of transmission blocks and the size of the transmission block.

In a possible design of the third aspect, the receiving module is configured to receive high-level signaling sent by the second communication device, where the high-level signaling includes the first information; or, is configured to receive the Control information sent by the second communication device, where the control information includes the first information.

In a third aspect, an embodiment of the present application provides a communication device, the communication device is specifically a second communication device, and the second communication device includes: a processing module for determining the number of transmission blocks scheduled by control information, and The second communication device determines that the control information determines the size of the scheduled transmission block; the processing module is used to generate the first information; the sending module is used to send the first information to the first communication device, and the first The bit status of the information indicates the number of transmission blocks scheduled by the control information; wherein, the first information includes X bits, and X is a positive integer; there is at least one bit status in the bit status corresponding to the X bits It can be used to indicate that the control information sent by the second communication device is used for scheduling of a single transmission block; at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first scheduling , Wherein the first scheduling means that the control information can schedule multiple transmission blocks, and there are newly transmitted transmission blocks and retransmitted transmission blocks in all transmission blocks that can be scheduled by the control information; the receiving module is used for According to the determined number of transmission blocks and the size of the transmission block, receive data sent by the first communication device, or the sending module is further configured to send data to the first communication device according to the determined number of transmission blocks and the size of the transmission block The first communication device sends data.

In a possible design of the fourth aspect, the sending module is configured to send high-level signaling to a first communication device, where the high-level signaling includes the first information; or, send control information to the first communication device , The control information includes the first information.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, at least one bit state among the bit states corresponding to the X bits can be used to indicate that the control information is used for Multiple transmission blocks are scheduled, and multiple transmission blocks are newly transmitted transmission blocks; and/or, at least one bit state among the bit states corresponding to the X bits can be used to indicate whether the control information is Used for multiple transmission block scheduling, and multiple transmission blocks are retransmitted transmission blocks. Wherein, the bit state corresponding to X bits includes multiple bit states, and the bit state corresponding to X bits indicates that the control information is used for scheduling of a single transmission block and for the first scheduling. The bit state corresponding to the X bits It can also be used to indicate that multiple transmission blocks are all retransmitted transmission blocks or are all newly transmitted transmission blocks. Therefore, the multiple different bit states of the first information provided in the embodiment of the present application can indicate the transmission block types corresponding to all the transmission blocks scheduled by the control information, thereby reducing the indication overhead of the control information.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the second Scheduling; or, high-level signaling or the control information indicates that the control information is also used for second scheduling, where the high-level signaling is signaling sent by the second communication device to the first communication device; The second scheduling means that all transmission blocks scheduled by the control information can only be all newly transmitted transmission blocks or all retransmitted transmission blocks. In the embodiment of the present application, the second scheduling is a scheduling method that is different from the first scheduling. The second scheduling means that all transmission blocks scheduled by the control information can only be all newly transmitted transmission blocks or all retransmitted transmission blocks. That is, in the second scheduling, all data blocks that are limited to control information scheduling can only be all newly transmitted transmission blocks or all retransmitted transmission blocks. In addition, the first information may indicate the second scheduling, or high-level signaling or control information indicates that the control information is also used for the second scheduling. As to which information or signaling indicates that the control information is used for the second scheduling, it is not limited here. .

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, the control information includes a first field, and the first field includes one or more bits; the first field When the bit state of the first field belongs to the first state set, the first information indicates that the control information is used for the first scheduling; when the bit state of the first field belongs to the second state set, the first information indicates that The control information is used for the second scheduling; the first state set includes one or more bit states of the first field, and the second state set includes one or more bit states of the first field Bit status. The first field is a component of the first information. For example, the first field can be located at the head of the first information, or at the end of the first field, or the first field is located at a specific position in the first information. There are no restrictions. The first field may have multiple bit states. For example, the first field includes at least: a first state set and a second state set. When the bit state of the first field belongs to the first state set, the first field may indicate that the control information is used for the first scheduling. For example, the first state set may include the bit state 00. When the bit state of the first field belongs to the second state set, it indicates that the control information is used for the second scheduling. For example, the second state set may be 01, 10, or 11. Wherein, the bit states included in each of the first state set and the second state set do not overlap.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the third aspect. Scheduling, wherein the third scheduling means that the control information can schedule multiple transmission blocks, and all the transmission blocks that can be scheduled by the control information are newly transmitted transmission blocks; and/or, the X bits At least one bit state in the corresponding bit state can be used to indicate that the control information is used for the fourth scheduling, where the fourth scheduling means that the control information can schedule multiple transmission blocks, and the control information can schedule All of the transmission blocks are retransmitted transmission blocks. Wherein, the bit status corresponding to the X bits can include multiple types, for example, at least one bit status can be used to indicate that the control information is used for the third scheduling, or the at least one bit status can be used to indicate that the control information is used for the third scheduling. Four degrees. In the embodiment of this application, the third scheduling means that the control information can schedule multiple transmission blocks, and only the newly transmitted transmission block exists among all the transmission blocks that can be scheduled by the control information. The fourth scheduling in the embodiment of this application refers to the control information Multiple transmission blocks can be scheduled, and among all the transmission blocks that can be scheduled by the control information, only the transmission block for scheduling retransmission exists. With reference to the description here, the bit status corresponding to the X bits in the embodiment of the present application can indicate a variety of different scheduling methods. It is necessary to determine the scheduling indicated by at least one bit status in the bit status corresponding to the X bits in combination with specific scenarios. the way.

In a possible design of the first aspect, the second aspect, the third aspect, or the fourth aspect, the HARQ process index of the first transmission block scheduled by the control information is 0, or the first transmission block The HARQ process index of one transport block is a preset value, or the HARQ process index of the first transport block is a fixed value; or, when the number of transport blocks scheduled by the control information is greater than M, the The HARQ process index of the first transmission block in the multiple transmission blocks scheduled by the control information is 0, or a preset value, or a fixed value, where the M is a preset or configured positive integer; and /Or, when the number of transmission blocks scheduled by the control information is less than L, the control information indicates the HARQ process index of the first transmission block among the scheduled transmission blocks in the HARQ process index set, and the HARQ process index The set includes at least two HARQ process indexes, where the L is a preset or configured positive integer. Wherein, the HARQ process index corresponding to the transmission block scheduled by the control information sent by the second communication device in the embodiment of the present application may also be determined by the foregoing example. For example, one achievable way is that the HARQ process index of the first transport block scheduled by the control information is 0, or the HARQ process index of the first transport block is a preset value, or the HARQ process index of the first transport block The HARQ process index is a fixed value. In this case, the second communication device does not need to indicate the HARQ process index of the first transport block, and the first communication device can predict the HARQ process index of the first transport block. Configure the value to determine the HARQ process index of the first transport block, thereby saving the indication overhead of the control information.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, the M=1, or the M=2, or the M=3, or the M=4, Or said M=5, or said M=6; or, said L=2, or said L=3, or said L=4, or said L=5, or said L=6. Among them, the values of M and L give corresponding examples here. Optionally, L=M+1. It is not limited that in actual application scenarios, the values of M and L can be configured according to specific scenarios. When the number of scheduled transmission blocks is large, considering that the status of each transmission block may be initial transmission or retransmission, there are many combinations of indicating the status of each transmission block, and the bit overhead required is also large. Therefore, it can be stipulated that when the number of transport blocks is greater than M, the HARQ process index of the first transport block is restricted to a fixed value, which greatly reduces the possibility of indication, thereby saving the indication overhead of control information. When the number of scheduled transmission blocks is small, considering that the status of each transmission block may be initial transmission or retransmission, there are not many combinations indicating the status of each transmission block, and the bit overhead required is small. Therefore, there is no need to limit the HARQ process index of the first transport block to a fixed value, which improves the flexibility of indication.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, the number of transmission blocks scheduled by the control information belongs to the set {2,3,4,5,6,7,8 }, the HARQ process index of the first transport block indicated by the first information is 0; or, the number of transport blocks scheduled by the control information belongs to the set {3,4,5,6,7, 8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0; or, the number of transport blocks scheduled by the control information belongs to the set {4,5,6,7,8 }, the HARQ process index of the first transport block indicated by the first information takes a value of 0. Among them, for the number of transmission blocks scheduled for control information belongs to any one of the above sets, the HARQ process index of the first transmission block is set to 0, and the second communication device does not need to perform the HARQ of the first transmission block. The process index is indicated, and the first communication device can determine the HARQ process index of the first transmission block by pre-configured value of the HARQ process index of the first transmission block, thereby saving the indication overhead of control information.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, when the number of transmission blocks scheduled by the control information is greater than N, the first communication device supports the transmission of the received transmission Blocks use bundling or multiplexing for response feedback, but do not support separate response feedback for each of the multiple received transmission blocks, where the N is a preset or configured positive integer; and /Or, when the number of transmission blocks scheduled by the control information is less than H, the first communication device supports separate response feedback for each of the multiple received transmission blocks, where H is a preset Or configured positive integer. Wherein, when the number of transmission blocks scheduled by the control information is greater than N, the first communication device supports bundling or multiplexing of the received transmission blocks for response feedback, but does not support each of the multiple received transmission blocks. Each transmission block performs individual response feedback, thereby reducing the indication overhead of control information. The values of N and H have a variety of achievable situations. What is not limited is that in actual application scenarios, the values of N and H can be configured according to specific scenarios. For example, H and N satisfy the following relationship: H=N+ 1.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, when the control information is used for the first scheduling, except for the first transmission block among the plurality of transmission blocks The HARQ process index of the other transmission blocks of the transmission block is determined according to the HARQ process index of the first transmission block; and/or, each transmission block of the multiple transmission blocks corresponds to a HARQ process index, and the multiple transmissions The multiple HARQ process indexes corresponding to the block are continuous. Among them, if the control information schedules multiple transmission blocks, the first information is used to indicate the HARQ process index of the first transmission block, and the HARQ process index of the transmission blocks other than the first transmission block in the multiple transmission blocks Determined according to the HARQ process index of the first transport block. For example, the HARQ process index of other transmission blocks may be calculated using a preset calculation method to calculate the HARQ process index of the first transmission block, so as to obtain the HARQ process indexes of other transmission blocks. For example, the preset calculation method may include multiple calculation rules, which will be described in detail in the subsequent embodiments. For each transmission block in the multiple transmission blocks, there is a HARQ process index, that is, each transmission block is configured with a HARQ process index, and the multiple HARQ process indexes corresponding to the multiple transmission blocks are continuous. When the first information When used to indicate the HARQ process index of the first transmission block, the HARQ process indexes of other transmission blocks can be obtained continuously according to all HARQ process indexes. For example, the HARQ process index of the first transmission block is 1. If the control information schedules 3 transmission blocks in total, the HARQ process indexes of other transmission blocks start from HARQ process index 1, and the other 3 transmission blocks are determined by the continuous rule The HARQ process index is 2, 3, 4.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, when the control information schedules 1 transmission block, the first information indicates in the value set {0,1} When the HARQ process index of the transmission block and the number of transmission blocks scheduled by the control information belong to the set {2,3,4,5,6,7,8}, the first transmission indicated by the first information The HARQ process index of a block takes a value of 0; or, when the control information schedules 1 transport block, the first information indicates the HARQ process index of the transport block in the value set {0,1}, and When the number of transmission blocks scheduled by the control information belongs to the set {2, 3, 4}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, when the control information schedules 1 transmission block, the first information is in the value set {0,1,2, 3,4,5,6,7} indicates the HARQ process index of the transport block, and the number of transport blocks scheduled by the control information belongs to the set {2,3,4,5,6,7,8} , The HARQ process index of the first transport block indicated by the first information is 0; or, when the control information schedules 1 transport block, the first information is in the value set {0,1,2 ,3,4,5,6,7} indicates the HARQ process index of the transport block, when the control information schedules 2 transport blocks, the first information indicates the first information in the value set {0,2} The HARQ process index of a transmission block, when the number of transmission blocks scheduled by the control information belongs to the set {3,4,5,6,7,8}, the first transmission block indicated by the first information The HARQ process index takes a value of 0; or, when the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0, 1}, and the control information When two transmission blocks are scheduled, the first information indicates the HARQ process index of the transmission block in the value set {0, 2} when the number of transmission blocks scheduled by the control information belongs to the set {3, 4} The HARQ process index of the first transport block indicated by the first information takes a value of 0.

In a possible design of the first aspect or the second aspect or the third aspect or the fourth aspect, when the control information schedules 2 transmission blocks, the first information is in the value set {0, 2, 4, 6} indicates the HARQ process index of the first transport block. When the control information schedules 3 transport blocks, the first information indicates the HARQ of the first transport block in the value set {0,3,4} Process index, when the number of transmission blocks scheduled by the control information belongs to the set {4, 5, 6, 7, 8}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0; Alternatively, when the control information schedules 2 transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0, 2, 4, 6}, and the control information schedules 4 When transmitting a block, the first information indicates the HARQ process index of the first transmission block in the value set {0,4}, and the number of transmission blocks scheduled by the control information belongs to the set {3,5,6, When 7, 8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0.

Wherein, when 1 or 2 or 3 or 4 transmission blocks are scheduled by the control information, the HARQ process index of the first transmission block indicated by the first information can be configured according to a specific scenario. The foregoing is only an example of this application.

In the third aspect of this application, the component modules of the first communication device can also perform the steps described in the first aspect and various possible implementations. For details, see the first aspect and various possible implementations described above. In the description.

In the fourth aspect of the present application, the component modules of the second communication device can also execute the steps described in the foregoing second aspect and various possible implementations. For details, see the foregoing description of the second aspect and various possible implementations. In the description.

In the fifth aspect, the embodiments of the present application provide a computer-readable storage medium that stores instructions in the computer-readable storage medium, which when run on a computer, causes the computer to execute the above-mentioned first or second aspect Methods.

In a sixth aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the method described in the first or second aspect.

In a seventh aspect, an embodiment of the present application provides a communication device. The communication device may include entities such as a terminal device or a network device. The communication device includes: a processor and a memory; the memory is used to store instructions; In executing the instructions in the memory, the communication device executes the method according to any one of the first aspect or the second aspect.

In an eighth aspect, the present application provides a chip system including a processor for supporting communication devices to implement the functions involved in the above aspects, for example, sending or processing data and/or information involved in the above methods . In a possible design, the chip system further includes a memory, and the memory is used to store necessary program instructions and data for the communication device. The chip system may be composed of chips, or may include chips and other discrete devices.

Description of the drawings

FIG. 1 is a schematic diagram of a system architecture applied by a data transmission method according to an embodiment of the application;

2 is a schematic block diagram of an interaction process between a first communication device and a second communication device according to an embodiment of the application;

3 is a schematic diagram of a control information scheduling transmission block provided by an embodiment of the application;

4 is a schematic diagram of another control information scheduling transmission block provided by an embodiment of this application;

FIG. 5 is a schematic diagram of the composition structure of a first communication device according to an embodiment of the application;

6 is a schematic diagram of the composition structure of a second communication device provided by an embodiment of this application;

FIG. 7 is a schematic diagram of the composition structure of another first communication device provided by an embodiment of this application;

FIG. 8 is a schematic diagram of the composition structure of another second communication device provided by an embodiment of this application.

detailed description

The embodiments of the present application will be described below in conjunction with the drawings.

The terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is merely a way of distinguishing objects with the same attributes in the description of the embodiments of the present application. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusion, so that a process, method, system, product, or device including a series of units is not necessarily limited to those units, but may include Listed or inherent to these processes, methods, products or equipment.

The technical solutions of the embodiments of the present application can be applied to various data processing communication systems, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (frequency division multiple access), and frequency division multiple access (CDMA). division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (single carrier FDMA, SC-FDMA) and other systems. The term "system" can be replaced with "network". The CDMA system can implement wireless technologies such as universal terrestrial radio access (UTRA) and CDMA2000. UTRA can include wideband CDMA (WCDMA) technology and other CDMA variants. CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards. The TDMA system can implement wireless technologies such as the global system for mobile communication (GSM). OFDMA system can realize such as evolved universal wireless terrestrial access (UTRA, E-UTRA), ultra mobile broadband (ultra mobile broadband, UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies. UTRA and E-UTRA are UMTS and UMTS evolved versions. 3GPP is a new version of UMTS using E-UTRA in long term evolution (LTE) and various versions based on LTE evolution. The Fifth Generation (5 Generation, "5G") communication system, and New Radio ("NR") are the next generation communication systems under study. In addition, the communication system may also be applicable to future-oriented communication technologies, all of which are applicable to the technical solutions provided in the embodiments of the present application. The system architecture and business scenarios described in the embodiments of this application are intended to illustrate the technical solutions of the embodiments of this application more clearly, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

The communication system provided by the embodiment of the present application may include: a first communication device and a second communication device, and data transmission can be performed between the first communication device and the second communication device. For example, the first communication device may include: a terminal device, and the second communication device may include: a network device. Or the first communication device may include: one terminal device, and the second communication device may include: another terminal device. Or the first communication device may include: a network device, and the second communication device may include: another network device.

Fig. 1 shows a schematic structural diagram of a possible radio access network (RAN) according to an embodiment of the present application. The RAN may be a base station access system of a 2G network (that is, the RAN includes a base station and a base station controller), or may be a base station access system of a 3G network (that is, the RAN includes a base station and an RNC), or may be 4G The base station access system of the network (that is, the RAN includes an eNB and RNC), or may be a base station access system of a 5G network.

The RAN includes one or more second communication devices. For example, the second communication device may include: a network device. The network device may be any device with a wireless transceiver function, or a chip set in a device with a specific wireless transceiver function. The network equipment includes, but is not limited to: base stations (such as base stations BS, base stations NodeB, evolved base stations eNodeB or eNB, base stations gNodeB or gNB in the fifth generation 5G communication system, base stations in future communication systems, and connections in WiFi systems. Ingress node, wireless relay node, wireless backhaul node), etc. The base station may be: macro base station, micro base station, pico base station, small station, relay station, etc. Multiple base stations can support the network of one or more technologies mentioned above, or the future evolution network. The core network may support the network of one or more technologies mentioned above, or a future evolution network. The base station may include one or more co-site or non co-site transmission receiving points (transmission receiving points, TRP). The network device may also be a wireless controller, a centralized unit (CU), or a distributed unit (DU) in a cloud radio access network (cloud radio access network, CRAN) scenario. The network device can also be a server, a wearable device, or a vehicle-mounted device. The following description takes the network device as a base station as an example. The multiple network devices may be base stations of the same type, or base stations of different types. The base station can communicate with the terminal equipment 1-6, and can also communicate with the terminal equipment 1-6 through a relay station. The terminal device 1-6 can support communication with multiple base stations of different technologies. For example, the terminal device can support communication with a base station supporting an LTE network, a base station supporting a 5G network, and a base station supporting an LTE network. And the dual connection of the base station of the 5G network. For example, the terminal is connected to the RAN node of the wireless network. At present, some examples of RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (RNC), Node B (Node B) B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit) , BBU), or wireless fidelity (Wifi) access point (AP), etc. In a network structure, a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

Terminal equipment 1-6, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), terminal, etc., is a way to provide users with voice and/or A device with data connectivity, or a chip set in the device, for example, a handheld device with a wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminal devices are: mobile phones (mobile phones), tablet computers, notebook computers, handheld computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid) The wireless terminal in the transportation safety (transportation safety), the wireless terminal in the smart city (smart city), the wireless terminal in the smart home (smart home), etc. The terminal device provided in the embodiment of the present application may be a low-complexity terminal device and/or a terminal device in the coverage enhancement A mode.

In the embodiment of this application, the base station and UE1 to UE6 form a communication system. In the communication system, the base station sends one or more of system information, RAR messages, and paging messages to one or more of UE1 to UE6. In addition, UE4 to UE6 also constitute a communication system. In this communication system, UE5 can be implemented as a base station. UE5 can send one or more of system information, control information and paging messages to UE4 and One or more UEs in UE6.

In order to solve the problem of excessive indication overhead of CI scheduling transmission block in the prior art, the following data transmission method is proposed in the embodiment of this application, which is suitable for the scenario of controlling information scheduling transmission block. The control information in the embodiment of this application may specifically include downlink control information. Please refer to FIG. 2, which is a schematic diagram of an interaction process between a network device and a terminal device provided in an embodiment of this application. The data transmission method provided in an embodiment of this application mainly includes the following steps:

201. The second communication device determines the number of transmission blocks scheduled by the control information, and the second communication device determines the size of the transmission block scheduled by the control information.

In the embodiment of the present application, the control information is generated by the second communication device, and the second communication device issues a control instruction to the first communication device through the control information. In the following examples, the control information is represented by CI. The second communication device first determines the number of transport blocks (transport block, TB) used for data transmission. For example, the number of transmission blocks determined by the second communication device may be one or two or three or four. The second communication device also needs to determine the transmission block size (TB size) of each transmission block in the transmission blocks scheduled by the control information. For example, the second communication device also needs to determine the newly transmitted transmission block and/or the retransmitted transmission block among the transmission blocks scheduled by the control information. Among them, the control information determines that all the transmission blocks scheduled can be all newly transmitted transmission blocks or retransmitted transmission blocks, or some transmission blocks in all transmission blocks are new transmissions, and some transmission blocks are retransmissions. .

For example, as shown in Figure 3, the control information can schedule 8 transmission blocks, namely TB1, TB2..., TB7, TB8. As shown in Figure 4, the control information can schedule 4 transmission blocks, namely TB1, TB2, TB3, and TB4. Each TB in FIG. 3 and FIG. 4 corresponds to a transmission state, for example, TB1 is a newly transmitted transmission block, and TB2 is a retransmitted transmission block.

In some embodiments of the present application, the first communication device may work in coverage enhancement mode B, or coverage enhancement level 2, or coverage enhancement level 3. When the first communication device works in coverage enhancement mode B, the maximum number of transmission blocks scheduled by the control information may be 4. Without limitation, the first communication device may also work in other modes, for example, it may work in coverage enhancement mode A, or coverage enhancement level 0, or coverage enhancement level 1.

202. The second communication device generates the first information, and sends the first information to the first communication device, where the bit status of the first information indicates the number of transmission blocks scheduled by the control information;

Wherein, the first information includes X bits, and X is a positive integer;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information sent by the second communication device is used for scheduling a single transmission block;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first scheduling, where the first scheduling means that the control information can schedule multiple transmission blocks, and the control information can schedule all transmission blocks There are newly transmitted transmission blocks and retransmitted transmission blocks.

In some embodiments of the present application, in order to enable the first communication device to obtain the number of transmission blocks determined by the second communication device, the second communication device may generate a piece of first information and send the first piece of information to the first piece of information. Communication device, so that the first communication device can obtain the number of transmission blocks determined by the second communication device according to the received first information.

In the embodiment of the present application, the first information includes X bits, and X is a positive integer. For example, the value of X may be 1, or the value of X may be a positive integer greater than 1. For example, when the first information includes 1 bit, when the bit status corresponding to the X bits is 0, it indicates that the control information is used for scheduling a single transmission block; when the bit status corresponding to the X bits is 1, the indicating control information is used for The first dispatch. For example, when the first information includes 2 bits, when the bit status corresponding to the X bits is 00, it indicates that the control information is used for scheduling a single transmission block, and when the bit status corresponding to the X bits is 01, or 10, or 11 , Indicating that the control information is used for the first scheduling.

In the embodiment of the present application, the first information generated by the second communication device has multiple bit states. For example, the bit states corresponding to X bits include at least multiple bit states such as a first state and a second state. In order to save the instruction overhead of control information, at least one of the bit states corresponding to the X bits generated by the second communication device in the embodiment of the present application can be used to indicate that the control information sent by the second communication device is used for a single transmission block. The scheduling, that is, the control information only schedules 1 transmission block. In addition, at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first scheduling, where the first scheduling means that the control information can schedule multiple transmission blocks, and the control information can schedule all transmissions There are newly transmitted transmission blocks and retransmitted transmission blocks in the blocks, that is, the control information can schedule part of the newly transmitted transmission blocks and part of the retransmitted transmission blocks. It should be noted that there are newly transmitted transmission blocks and retransmitted transmission blocks in all transmission blocks that can be scheduled by control information, but the specific scheduling transmission block type of the control information is not limited in the embodiment of the present application.

203. The second communication device receives the data sent by the first communication device according to the determined number of transmission blocks and the size of the transmission block, or 204, the second communication device according to the determined number of transmission blocks and the size of the transmission block , Send data to the first communication device.

In the embodiment of the present application, after the second communication device sends the first information to the first communication device, the bit status of the first information indicates the number of transmission blocks scheduled by the control information, the second communication device may The determined number of transmission blocks and the determined transmission block size corresponding to each transmission block perform data transmission with the first communication device. For example, the second communication device determines the number of transmission blocks that can be used for current data transmission according to the determined number of transmission blocks, and the second communication device determines the transmission block size that can be used for current data transmission according to the determined transmission block size corresponding to each transmission block. . Similarly, the first communication device determines the number of transmission blocks that can be used for current data transmission according to the determined number of transmission blocks, and the first communication device determines the transmission block size that can be used for current data transmission according to the determined transmission block size corresponding to each transmission block. The block size. Further, when the second communication device sends data to the first communication device, the second communication device also needs to determine whether each transmission block in all transmission blocks scheduled by the control information is a newly transmitted transmission block or a retransmitted transmission block .

211. The first communication device receives the first information sent by the second communication device.

Wherein, the first information includes X bits, and X is a positive integer;

In the embodiment of the present application, the first information includes X bits, and X is a positive integer. For example, when the first information includes 1 bit, when the bit status corresponding to the X bits is 0, it indicates that the control information is used for scheduling a single transmission block; when the bit status corresponding to the X bits is 1, the indicating control information is used for The first dispatch. For example, when the first information includes 2 bits, when the bit status corresponding to the X bits is 00, it indicates that the control information is used for scheduling a single transmission block, and when the bit status corresponding to the X bits is 01, or 10, or 11 , Indicating that the control information is used for the first scheduling.

212. The first communication device determines the number of transmission blocks scheduled by the control information according to the bit status of the first information, and determines the size of the transmission blocks scheduled by the control information according to the control information.

In the embodiment of the present application, the second communication device sends the first information to the first communication device. After the first communication device receives the first information in step 211, the first communication device parses the first information to determine The number of transmission blocks scheduled for control information. For example, the number of transmission blocks determined by the second communication device may be one or two or three or four. The first communication device also needs to determine the transmission block size (TB size) of each transmission block in the transmission blocks scheduled by the control information. For example, the first communication device also needs to determine the newly transmitted transmission block and/or the retransmitted transmission block among the transmission blocks scheduled by the control information. Among them, the control information determines that all the transmission blocks scheduled can be all newly transmitted transmission blocks or retransmitted transmission blocks, or some transmission blocks in all transmission blocks are new transmissions, and some transmission blocks are retransmissions. .

213. The first communication device receives the data sent by the second communication device according to the determined number of transmission blocks and the size of the transmission block, or 214. The first communication device determines the number of transmission blocks and the size of the transmission block , Send data to the second communication device.

In the embodiment of the present application, after the first communication device receives the first information sent by the second communication device, the first communication device may determine the number of transmission blocks and the determined transmission block size corresponding to each transmission block, and The second communication device performs data transmission. The first communication device determines the number of transmission blocks that can be used for current data transmission according to the determined number of transmission blocks, and the first communication device determines the transmission block size that can be used for current data transmission according to the determined transmission block size corresponding to each transmission block. Further, when the first communication device sends data to the second communication device, the first communication device also needs to determine whether each transmission block among all transmission blocks scheduled by the control information is a newly transmitted transmission block or a retransmitted transmission block .

In some embodiments of the present application, at least one bit state among the bit states corresponding to the X bits can be used to indicate that the control information is used for multiple transmission block scheduling, and multiple transmission blocks are newly transmitted. Transfer block; and/or,

Among the bit states corresponding to the X bits, at least one bit state can be used to indicate that the control information is used for multiple transmission block scheduling, and the multiple transmission blocks are retransmitted transmission blocks.

Wherein, the bit state corresponding to X bits includes multiple bit states, and the bit state corresponding to X bits indicates that the control information is used for scheduling of a single transmission block and for the first scheduling. The bit state corresponding to the X bits It can also be used to indicate that multiple transmission blocks are all retransmitted transmission blocks or are all newly transmitted transmission blocks. Therefore, the multiple different bit states of the first information provided in the embodiment of the present application can indicate the transmission block types corresponding to all the transmission blocks scheduled by the control information, thereby reducing the indication overhead of the control information.

In some embodiments of the present application, the data transmission method provided in the embodiments of the present application may include the following steps in addition to the foregoing steps:

The first communication device receives the high-level signaling sent by the second communication device, where the high-level signaling includes the first information; or,

The first communication device receives the control information sent by the second communication device, where the control information includes the first information.

In some embodiments of the present application, at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the second scheduling; or,

The higher layer signaling or control information indicates that the control information is also used for the second scheduling, where the higher layer signaling is the signaling sent by the second communication device to the first communication device;

Among them, the second scheduling means that all transmission blocks scheduled by the control information can only be all newly transmitted transmission blocks or all retransmitted transmission blocks.

In the embodiment of the present application, the second scheduling is a scheduling method that is different from the first scheduling. The second scheduling means that all transmission blocks scheduled by the control information can only be all newly transmitted transmission blocks or all retransmitted transmission blocks. That is, in the second scheduling, all data blocks that are limited to control information scheduling can only be all newly transmitted transmission blocks or all retransmitted transmission blocks. In addition, the first information may indicate the second scheduling, or high-level signaling or control information indicates that the control information is also used for the second scheduling. As to which information or signaling indicates that the control information is used for the second scheduling, it is not limited here. .

In some embodiments of the present application, the control information includes a first field, and the first field includes one bit or multiple bits;

When the bit state of the first field belongs to the first state set, the first information indicates that the control information is used for the first scheduling;

When the bit state of the first field belongs to the second state set, the first information indicates that the control information is used for the second scheduling;

The first state set includes one or more bit states of the first field, and the second state set includes one or more bit states of the first field.

The first field is a component of the first information. For example, the first field can be located at the head of the first information, or at the end of the first field, or the first field is located at a specific position in the first information. There are no restrictions. The first field may have multiple bit states. For example, the first field includes at least: a first state set and a second state set. When the bit state of the first field belongs to the first state set, the first field may indicate that the control information is used for the first scheduling. For example, the first state set may include the bit state 00. When the bit state of the first field belongs to the second state set, it indicates that the control information is used for the second scheduling. For example, the second state set may be 01, 10, or 11. Wherein, the bit states included in each of the first state set and the second state set do not overlap.

In the embodiment of the present application, the first state set includes one or more bit states of the first field, and the second state set includes one or more bit states of the first field. The number of bits included in the first field is not limited here, and each state included in the first field is not limited here. In the embodiment of the present application, the first field in the first information is used to indicate whether the control information is used for the first scheduling or the second scheduling. Using different bit states of the first field to indicate whether the control information specifically adopts the first scheduling or the second scheduling can save the bit overhead of the control information and reduce the occupation of transmission resources.

In some embodiments of the present application, at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the third scheduling, where the third scheduling means that the control information can schedule multiple transmission blocks, and All transmission blocks that can be scheduled by control information are newly transmitted transmission blocks; and/or,

At least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the fourth scheduling, where the fourth scheduling means that the control information can schedule multiple transmission blocks, and the control information can schedule all transmission blocks Both are retransmitted transmission blocks.

Wherein, the bit status corresponding to the X bits can include multiple types, for example, at least one bit status can be used to indicate that the control information is used for the third scheduling, or the at least one bit status can be used to indicate that the control information is used for the third scheduling. Four degrees. In the embodiment of this application, the third scheduling means that the control information can schedule multiple transmission blocks, and only the newly transmitted transmission block exists among all the transmission blocks that can be scheduled by the control information. The fourth scheduling in the embodiment of this application refers to the control information Multiple transmission blocks can be scheduled, and among all the transmission blocks that can be scheduled by the control information, only the transmission block for scheduling retransmission exists. With reference to the description here, the bit status corresponding to the X bits in the embodiment of the present application can indicate a variety of different scheduling methods. It is necessary to determine the scheduling indicated by at least one bit status in the bit status corresponding to the X bits in combination with specific scenarios. the way.

In some embodiments of the present application, the HARQ process index of the first transport block scheduled by the control information is 0, or the HARQ process index of the first transport block is a preset value, or the HARQ process of the first transport block The index is a fixed value; or,

When the number of transmission blocks scheduled by control information is greater than M, the HARQ process index of the first transmission block among the multiple transmission blocks scheduled by control information is 0, or a preset value, or a fixed value, where M Is a preset or configured positive integer; and/or,

When the number of transmission blocks scheduled by the control information is less than L, the control information indicates the HARQ process index of the first transmission block among the scheduled transmission blocks in the HARQ process index set, and the HARQ process index set includes at least two HARQ process indexes, Among them, L is a preset or configured positive integer.

Wherein, the HARQ process index corresponding to the transmission block scheduled by the control information sent by the second communication device in the embodiment of the present application may also be determined by the foregoing example. For example, one achievable way is that the HARQ process index of the first transport block scheduled by the control information is 0, or the HARQ process index of the first transport block is a preset value, or the HARQ process index of the first transport block The HARQ process index is a fixed value. In this case, the second communication device does not need to indicate the HARQ process index of the first transport block, and the first communication device can predict the HARQ process index of the first transport block. Configure the value to determine the HARQ process index of the first transport block, thereby saving the indication overhead of the control information.

For another example, the HARQ process index of the first transmission block is determined according to the value of the number of transmission blocks scheduled by the control information. For example, set M and L to determine whether the number of transmission blocks scheduled by control information is greater than M or less than L. When the number of transmission blocks scheduled by control information is greater than M, the first of multiple transmission blocks scheduled by control information The HARQ process index of the transmission block is 0, or a preset value, or a fixed value. In this case, the second communication device does not need to indicate the HARQ process index of the first transmission block, and the first communication device The pre-configured value of the HARQ process index of the first transport block can be used to determine the HARQ process index of the first transport block, thereby saving the indication overhead of the control information. When the number of transmission blocks scheduled by the control information is less than L, the control information indicates the HARQ process index of the first transmission block in the scheduled transmission block in the HARQ process index set, where the second communication device may also send a notification to the first transmission block. The communication device sends HARQ process index set information, so that the first communication device can determine at least one HARQ process index set according to the HARQ process index set information. The second communication device may send HARQ process index set information to the first communication device, so that the second communication device further sends control information to the first communication device, and the control information is performed in the HARQ process index set determined by the second communication device The indication of the HARQ index and/or the indication of the number of transmission blocks can reduce the indication overhead of the control information.

Further, in some embodiments of the present application, M=1, or M=2, or M=3, or M=4, or M=5, or M=6; or,

L=2, or L=3, or L=4, or L=5, or L=6.

Among them, the values of M and L give corresponding examples here. Optionally, L=M+1. It is not limited that in actual application scenarios, the values of M and L can be configured according to specific scenarios. When the number of scheduled transmission blocks is large, considering that the status of each transmission block may be initial transmission or retransmission, there are many combinations of indicating the status of each transmission block, and the bit overhead required is also large. Therefore, it can be stipulated that when the number of transport blocks is greater than M, the HARQ process index of the first transport block is restricted to a fixed value, which greatly reduces the possibility of indication, thereby saving the indication overhead of control information. When the number of scheduled transmission blocks is small, considering that the status of each transmission block may be initial transmission or retransmission, there are not many combinations indicating the status of each transmission block, and the bit overhead required is small. Therefore, there is no need to limit the HARQ process index of the first transport block to a fixed value, which improves the flexibility of indication.

In some embodiments of the present application, when the number of transmission blocks scheduled by the control information belongs to the set {2,3,4,5,6,7,8}, the HARQ of the first transmission block indicated by the first information The process index is 0; or,

When the number of transmission blocks scheduled by the control information belongs to the set {3,4,5,6,7,8}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0; or,

When the number of transmission blocks scheduled by the control information belongs to the set {4,5,6,7,8}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0.

Among them, for the number of transmission blocks scheduled for control information belongs to any one of the above sets, the HARQ process index of the first transmission block is set to 0, and the second communication device does not need to perform the HARQ of the first transmission block. The process index is indicated, and the first communication device can determine the HARQ process index of the first transmission block by pre-configured value of the HARQ process index of the first transmission block, thereby saving the indication overhead of control information.

In some embodiments of the present application, when the number of transmission blocks scheduled by the control information is greater than N, the first communication device supports bundling or multiplexing of the received transmission blocks for response feedback, but does not support Each of the received multiple transmission blocks performs a separate response feedback, where N is a preset or configured positive integer; and/or,

When the number of transmission blocks scheduled by the control information is less than H, the first communication device supports separate response feedback for each of the multiple received transmission blocks, where H is a preset or configured positive integer.

Wherein, when the number of transmission blocks scheduled by the control information is greater than N, the first communication device supports bundling or multiplexing of the received transmission blocks for response feedback, but does not support each of the multiple received transmission blocks. Each transmission block performs individual response feedback, thereby reducing the indication overhead of control information. The values of N and H have a variety of achievable situations. What is not limited is that in actual application scenarios, the values of N and H can be configured according to specific scenarios. For example, H and N satisfy the following relationship: H=N+ 1.

In some embodiments of the present application, when the control information is used for the first scheduling,

The HARQ process index of the transport blocks other than the first transport block among the multiple transport blocks is determined according to the HARQ process index of the first transport block; and/or,

Each transmission block in the multiple transmission blocks corresponds to one HARQ process index, and the multiple HARQ process indexes corresponding to the multiple transmission blocks are continuous.

Among them, if the control information schedules multiple transmission blocks, the first information is used to indicate the HARQ process index of the first transmission block, and the HARQ process index of the transmission blocks other than the first transmission block in the multiple transmission blocks Determined according to the HARQ process index of the first transport block. For example, the HARQ process index of other transmission blocks may be calculated using a preset calculation method to calculate the HARQ process index of the first transmission block, so as to obtain the HARQ process indexes of other transmission blocks. For example, the preset calculation method may include multiple calculation rules, which will be described in detail in the subsequent embodiments. For each transmission block in the multiple transmission blocks, there is a HARQ process index, that is, each transmission block is configured with a HARQ process index, and the multiple HARQ process indexes corresponding to the multiple transmission blocks are continuous. When the first information When used to indicate the HARQ process index of the first transmission block, the HARQ process indexes of other transmission blocks can be obtained continuously according to all HARQ process indexes. For example, the HARQ process index of the first transmission block is 1. If the control information schedules 3 transmission blocks in total, the HARQ process indexes of other transmission blocks start from HARQ process index 1, and the other 3 transmission blocks are determined by the continuous rule The HARQ process index is 2, 3, 4.

Further, in some embodiments of the present application, when the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0, 1}, and the transmission block scheduled by the control information When the number belongs to the set {2,3,4,5,6,7,8}, the HARQ process index of the first transport block indicated by the first information takes the value 0. Among them, in conjunction with the example in the subsequent Table 1, when the control information schedules 1 transmission block, the first information is in the HARQ process index of the transmission block 0, or 1 indicates the HARQ process index of the first transmission block. At this time, the control information scheduling The number of transmission blocks belongs to the set {2,3,4,5,6,7,8}.

In some embodiments of the present application, as an example in the following Table 6, when the control information schedules 1 transport block, the first information indicates the HARQ process index of the transport block in the value set {0,1}, and the control information When the number of scheduled transmission blocks belongs to the set {2, 3, 4}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0.

In some embodiments of the present application, as in the following example in Table 2, when the control information schedules 1 transmission block, the first information is in the value set {0,1,2,3,4,5,6,7 } Indicates the HARQ process index of the transport block, when the number of transport blocks scheduled by the control information belongs to the set {2,3,4,5,6,7,8}, the HARQ of the first transport block indicated by the first information The process index is 0; or,

In some embodiments of the present application, as in the following example in Table 3, when the control information schedules one transmission block, the first information is in the value set {0,1,2,3,4,5,6,7} Indicates the HARQ process index of the transmission block. When the control information schedules 2 transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0, 2}, and the control information schedules the transmission block When the number belongs to the set {3,4,5,6,7,8}, the HARQ process index of the first transport block indicated by the first information takes the value 0; or,

In some embodiments of the present application, as an example in Table 7 below, when the control information schedules 1 transport block, the first information indicates the HARQ process index of the transport block in the value set {0,1}, and the control information When two transmission blocks are scheduled, the first information indicates the HARQ process index control information of the transmission block in the value set {0, 2}. When the number of transmission blocks scheduled by the control information belongs to the set {3, 4}, the first information indicates The HARQ process index of the first transport block is 0.

In some embodiments of the present application, as an example in the following Table 4, when the control information schedules 2 transmission blocks, the first information indicates the first transmission block in the value set {0, 2, 4, 6} When the control information schedules 3 transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0,3,4}. The number of transmission blocks scheduled by the control information belongs to When set {4,5,6,7,8}, the HARQ process index of the first transport block indicated by the first information is 0; or,

In some embodiments of the present application, as an example in the following Table 5, when the control information schedules 2 transmission blocks, the first information indicates the first transmission block in the value set {0, 2, 4, 6} When the control information schedules 4 transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0,4}, and the number of transmission blocks scheduled by the control information belongs to the set { 3,5,6,7,8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0. The HARQ process index of the first transport block is restricted to a fixed value, which greatly reduces the possibility of indication, thereby saving the indication overhead of control information.

In order to facilitate a better understanding and implementation of the above-mentioned solutions in the embodiments of the present application, corresponding application scenarios are illustrated below for specific description.

In the embodiment of this application, the first communication device is the UE and the second communication device is the base station for illustration. The aforementioned control information is specifically DCI. In the embodiment of this application, when DCI schedules multiple transmission blocks, the DCI indication can be reduced. Expenses and improve resource efficiency.

When the DCI schedules multiple transmission blocks, the HARQ process indexes corresponding to the multiple transmission blocks are continuous. The HARQ process index of the first transport block in the multiple transport blocks is predetermined or indicated, and the HARQ process of the other transport blocks in the multiple transport blocks is determined by the HARQ process index of the first transport block.

Feedback information between different TBs can be bundled (Bundling), and binding rules are pre-defined.

Specify the combination of TB indication and feedback indication to reduce indication overhead.

In this embodiment of the present application, the second communication device sends the first information to the first communication device. The second communication device may be a base station, or a device with transmission capability. The first communication device may be a user equipment, or a device with receiving capability. The first information may be contained in higher layer (such as RRC or medium access control) signaling or physical layer signaling.

The first information may be contained in higher layer (such as RRC or medium access control) signaling or physical layer signaling. The definition of the first information is as described above, and will not be repeated here.

Optionally, higher layer signaling (such as RRC) or physical layer signaling (such as DCI) indicates whether the DCI supports hybrid TB scheduling or does not support hybrid TB scheduling. DCI supports hybrid TB scheduling means that DCI can schedule some TBs as newly transmitted TBs and some TBs are retransmitted TBs. DCI does not support hybrid TB scheduling means that DCI can only schedule all newly transmitted TBs or schedule all retransmitted TBs.

Optionally, hybrid TB scheduling may include that all TBs scheduled by DCI are new transmissions.

Optionally, the hybrid TB scheduling may include that all TBs scheduled by the DCI are retransmissions.

Optionally, high-level signaling (such as RRC) or physical layer signaling (such as DCI) indicates that all TBs scheduled by DCI are new transmissions, all TBs scheduled by DCI are retransmissions, and TBs scheduled by DCI are one of hybrid scheduling. Or multiple.

For hybrid TB scheduling, the HARQ process index of other TBs scheduled by DCI is determined according to the HARQ process index of the first TB (for example, it is determined in an increasing order or in a decreasing order). The HARQ process index of the first TB may be pre-defined, or indicated by signaling or DCI. The HARQ process index corresponding to each TB is continuous.

Optionally, when the number of TBs scheduled by the DCI is greater than N, the HARQ process index of the first TB is fixed. For example, N=1, and the HARQ process index of the first TB is fixed at 0 or fixed at 7.

The following Table 1 illustrates a method of indicating the number of TBs, the HARQ process index, the combination of the newly transmitted TB and the retransmitted TB with 9 bits. Optionally, this method is applicable to control element (CE) mode (Mode) A, or coverage enhancement level 0, or coverage enhancement level 1.

One or more of the 9 bits indicate that the DCI schedules a TB. The different bit states in the 9 bits indicate the HARQ process corresponding to the TB. Optionally, when DCI schedules a TB, and the HARQ process index corresponding to the TB is 0.

When DCI schedules M (M>1) TBs, the HARQ process index of the first TB among the M TBs is 0, and the HARQ process indexes of other TBs are determined in increasing order according to the HARQ process index of the first TB. If the HARQ process index exceeds the maximum value (for example, 7), the HARQ process index corresponding to the TB block can also be determined in a wrap-around manner (that is, starting from 0).

Table 1: DCI indicates the number of scheduled TBs, the HARQ process index, the combination of newly transmitted TB and retransmitted TB.

Optionally, 1 bit is used in the DCI to indicate whether the DCI schedules one TB or multiple TBs. Alternatively, the bit status of multiple bits in the DCI indicates whether the DCI schedules one TB or multiple TBs. When DCI schedules a TB, 1 bit may also be used to indicate the index corresponding to the TB. When DCI schedules multiple TBs, as shown in Table 2 or Table 3, 9 bits can also be used to indicate the number of TBs scheduled by DCI, the HARQ process indexes of all scheduled TBs, and the combination of newly transmitted TBs and retransmitted TBs. The DCI indicates that the TB scheduled by the DCI may be all newly transmitted TBs, or the TB scheduled by the DCI may be all retransmitted TBs.

Table 2: DCI indicates the number of scheduled TBs, HARQ process index, the combination of newly transmitted TB and retransmitted TB

Table 3: DCI indicates the number of TBs scheduled, the HARQ process index, the combination of newly transmitted TB and retransmitted TB

In order to reduce the indication overhead and provide the flexibility of HARQ process index indication, in hybrid scheduling, DCI indicates that the TB scheduled by DCI may not include all newly transmitted TBs, nor does it include the case where DCI indicates that DCI scheduled TBs are all retransmitted TBs. . For example, Table 4 and Table 5 illustrate the method of indicating the number of TBs, the HARQ process index, the combination of the newly transmitted TB and the retransmitted TB with 9 bits. In this method, the DCI-scheduled TB does not include the case of all newly transmitted TBs, nor the case that the DCI-scheduled TBs are all retransmitted TBs.

When DCI schedules 2 TBs, there are 4 HARQ process indexes corresponding to 2 TBs. The DCI indicates the HARQ process index of 2 TBs, or the DCI indicates the HARQ process index of the first TB in the 2 TBs.

When DCI schedules 3 TBs, there are 3 HARQ process indexes corresponding to 3 TBs. The DCI indicates the HARQ process index of 3 TBs, or the DCI indicates the HARQ process index of the first TB among the 3 TBs.

Table 4: DCI indicates the number of TBs scheduled, the HARQ process index, the combination of newly transmitted TB and retransmitted TB

Table 5 below illustrates another method of indicating the number of TBs, the HARQ process index, the combination of newly transmitted TB and retransmitted TB with 9 bits. Optionally, this method is applicable to CEModeA. Table 5 below does not support DCI indicating that the TBs scheduled by DCI are all newly transmitted TBs, nor does it support DCI indicating that TBs scheduled by DCI are all retransmitted TBs.

When DCI schedules 2 TBs, there are 3 HARQ process indexes corresponding to 2 TBs. The DCI indicates the HARQ process index of 2 TBs, or the DCI indicates the HARQ process index of the first TB in the 2 TBs.

When DCI schedules 4 TBs, there are 2 HARQ process indexes corresponding to 4 TBs. The DCI indicates the HARQ process index of 4 TBs, or the DCI indicates the HARQ process index of the first TB among the 4 TBs.

Table 5: DCI indicates the number of TBs scheduled, the HARQ process index, the combination of newly transmitted TB and retransmitted TB

The following Table 6 illustrates a method of indicating the number of TBs, the HARQ process index, the combination of the newly transmitted TB and the retransmitted TB with 5 bits. Optionally, this method is applicable to CEModeB, or coverage enhancement level 2, or coverage enhancement level 3.

The status of one or more of the 5 bits indicates that the DCI schedules a TB. The different bit states in the 5 bits indicate the HARQ process corresponding to the TB. Optionally, when DCI schedules a TB, and the HARQ process index corresponding to the TB is 0.

One or more bit states in the 5 bits indicate that DCI schedules M (M>1) TBs. The HARQ process index of the first TB in the M TBs is 0, and the HARQ process indexes of other TBs are determined in increasing or decreasing order according to the HARQ process indexes of the first TB.

Table 6: DCI indicates the number of TBs scheduled, the HARQ process index, the combination of newly transmitted TB and retransmitted TB

Optionally, regardless of the number of TBs scheduled by the DCI, the HARQ process index of the first TB scheduled by the DCI is a fixed value. For example, it is fixed at 0.

Optionally, as shown in Table 7 below, 1 bit is used in the DCI to indicate whether the DCI schedules one TB or multiple TBs. Alternatively, the bit status of multiple bits in the DCI indicates whether the DCI schedules one TB or multiple TBs. When DCI schedules a TB, 1 bit may also be used to indicate the index corresponding to the TB. When DCI schedules multiple TBs, as shown in Table 7, 5 bits can also be used to indicate the number of TBs scheduled by DCI, the HARQ process indexes of all scheduled TBs, and the combination of newly transmitted TBs and retransmitted TBs. The DCI indicates that the TB scheduled by the DCI may be all newly transmitted TBs, or the TB scheduled by the DCI may be all retransmitted TBs.

Table 7: DCI indicates the number of scheduled TBs, HARQ process index, combination of newly transmitted TB and retransmitted TB

The DCI contains the first field, and the bit status of the first field is used to indicate whether the DCI is used for single-TB scheduling or multi-TB scheduling. The bit state of the first field belongs to the first state set, and the DCI is used for single TB scheduling. The bit state of the first field belongs to the second state set, and DCI is used for multi-TB scheduling. The first field may contain one bit or multiple bits.

The following Table 8 illustrates an indication method in which the first field contains 1 bit and the second field contains 1 bit. When the bit status of the first field indicates that DCI can be used for multi-TB scheduling, optionally, DCI may also include a second field, and the bit status of the second field can also be used to indicate whether DCI is used for non-hybrid scheduling or hybrid scheduling . The bit state of the second field belongs to the third state set, and DCI is used for non-hybrid scheduling. The bit state of the second field belongs to the fourth state set, and DCI is used for hybrid scheduling. The second field may contain one bit or multiple bits.

Table 8: Single TB and multiple TB indications, mixed scheduling and non-mixed scheduling indications

Optionally, the bit status of the first field can be used to indicate whether DCI is used for single TB scheduling or multi-TB scheduling, and the bit status of the first field can also be used to indicate whether DCI is used for all new transmissions, all retransmissions, and mixed. Scheduling.

Table 9 below exemplifies that the first field contains 2 bits, which are used to indicate single TB, multiple TB, all new transmissions, and all retransmissions.

第一字段的比特状态Bit state of the first field	To
0000	单TBSingle TB
0101	多TB，全部新传More terabytes, all new
1010	多TB，全部重传Multiple TB, all retransmission
1111	多TB，混合调度Multi TB, mixed scheduling

Optionally, hybrid scheduling may include all new transmissions and all retransmissions.

Optionally, hybrid scheduling does not include all new transmissions and all retransmissions.

Optionally, DCI does not support hybrid scheduling, and DCI only supports all new transmissions or all retransmissions.

Optionally, 1 bit in the DCI indicates whether the DCI is used for hybrid scheduling or non-hybrid scheduling. When DCI is used for hybrid scheduling, Y bits are also used in DCI to indicate hybrid scheduling. In non-hybrid scheduling, X bits are also used in DCI to indicate all new transmissions or all retransmissions. Among them, Y>=X. For example, Y=9 or 10, X=9. For example, 8 bits of the X bits indicate the scheduled TB and the corresponding HARQ process index in a bitmap indication manner. One of the X bits indicates whether the scheduled TB is all new transmission or all retransmission.

Optionally, when the number of scheduled TBs is greater than K, ACK/NACK bundling or ACK/NACK multiplexing is supported. K is a fixed value or the value indicated by the first node.

An example of ACK/NACK bundling is given in Table 10 below. TB scheduling and initial transmission and retransmission instructions are as follows:

The following Table 11 shows another example of ACK/NACK bundling in multi-TB scheduling. The TB scheduling and initial transmission retransmission instructions are as follows:

It can be seen from the foregoing example that the flexibility of the HARQ process index is not important enough relative to the flexibility of the TB number indication. Therefore, the HARQ process corresponding to each TB scheduled by the DCI is restricted, the DCI bit overhead is optimized, and the DCI transmission performance is improved. The prior art requires at least 16 bits to indicate the scheduled TB, HARQ process index, newly transmitted TB or retransmitted TB. The embodiment of this application only needs 7 to 9 bits to indicate TB, HARQ process index, new transmission TB or retransmission TB.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that this application is not limited by the described sequence of actions. Because according to this application, some steps can be performed in other order or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

In order to facilitate better implementation of the above-mentioned solutions in the embodiments of the present application, related devices for implementing the above-mentioned solutions are also provided below.

Please refer to FIG. 5, which is a schematic diagram of the composition structure of a first communication device in an embodiment of this application. The first communication device 500 includes:

The receiving module 501 is configured to receive the first information sent by the second communication device;

Wherein, the first information includes X bits, and X is a positive integer;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first scheduling, where the first scheduling means that the control information can schedule multiple transmission blocks, and There are newly transmitted transmission blocks and retransmitted transmission blocks among all transmission blocks that can be scheduled by the control information;

The processing module 502 is configured to determine the number of transmission blocks scheduled by the control information according to the bit state of the first information, and determine the size of the transmission block scheduled by the control information according to the control information;

The receiving module 501 is configured to receive the data sent by the second communication device according to the determined number of transmission blocks and the size of the transmission block, or the sending module 503 is configured to receive data according to the determined number of transmission blocks and the transmission block To send data to the second communication device.

In some embodiments of the present application, the receiving module 501 is configured to receive high-level signaling sent by the second communication device, where the high-level signaling includes the first information; or, is configured to receive the first information. 2. Control information sent by a communication device, where the control information includes the first information.

Please refer to FIG. 6, which is a schematic diagram of the composition structure of a second communication device in an embodiment of this application. The second communication device 600 includes:

The processing module 602 is configured to determine the number of transmission blocks scheduled by the control information, and determine the hybrid automatic repeat request HARQ process index corresponding to each transmission block in the transmission blocks scheduled by the control information;

The processing module 602 is also used to generate first information;

The sending module 601 is configured to send the first information to the first communication device;

Wherein, the first information includes X bits, and X is a positive integer;

The receiving module 603 is configured to receive data sent by the first communication device according to the determined number of transmission blocks and the size of the transmission block, or the sending module 601 is further configured to receive data according to the determined number of transmission blocks And the size of the transmission block, sending data to the first communication device.

In some embodiments of the present application, the sending module is configured to send high-level signaling to the first communication device, where the high-level signaling includes the first information; or, to send control information to the first communication device, The control information includes the first information.

In some embodiments of the present application, at least one bit state among the bit states corresponding to the X bits can be used to indicate that the control information is used for multiple transmission block scheduling, and that the multiple transmission blocks are all Is a newly transmitted transmission block; and/or,

Among the bit states corresponding to the X bits, at least one bit state can be used to indicate that the control information is used for scheduling of multiple transmission blocks, and the multiple transmission blocks are all retransmitted transmission blocks.

In some embodiments of the present application, the first communication device receives high-level signaling sent by the second communication device, and the high-level signaling includes the first information; or,

The first communication device receives control information sent by the second communication device, where the control information includes the first information.

High-layer signaling or the control information indicates that the control information is also used for second scheduling, where the high-layer signaling is signaling sent by the second communication device to the first communication device;

The second scheduling means that all transmission blocks scheduled by the control information can only be all newly transmitted transmission blocks or all retransmitted transmission blocks.

When the bit state of the first field belongs to a first state set, the first information indicates that the control information is used for the first scheduling;

In some embodiments of the present application, the first scheduling further includes that all transmission blocks scheduled by the control information are newly transmitted transmission blocks; and/or,

The first scheduling further includes that all transmission blocks scheduled by the control information are retransmitted transmission blocks.

In some embodiments of the present application, the HARQ process index of the first transmission block scheduled by the control information is 0, or the HARQ process index of the first transmission block is a preset value, Or the HARQ process index of the first transport block is a fixed value; or,

When the number of transmission blocks scheduled by the control information is greater than M, the HARQ process index of the first transmission block among the multiple transmission blocks scheduled by the control information is 0, or a preset value, or a fixed value , Wherein the M is a preset or configured positive integer; or,

When the number of transmission blocks scheduled by the control information is less than L, the control information indicates the HARQ process index of the first transmission block among the scheduled transmission blocks in the HARQ process index set, and the HARQ process index set includes at least Two HARQ process indexes, where the L is a preset or configured positive integer.

In some embodiments of the present application, the M=1, or the M=2, or the M=3, or the M=4, or the M=5, or the M=6; or,

The L=2, or the L=3, or the L=4, or the L=5, or the L=6.

In some embodiments of the present application, when the number of transmission blocks scheduled by the control information belongs to the set {2,3,4,5,6,7,8}, the first transmission indicated by the first information The HARQ process index of the block is 0; or,

When the number of transmission blocks scheduled by the control information belongs to the set {3, 4, 5, 6, 7, 8}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0; or ,

When the number of transmission blocks scheduled by the control information belongs to the set {4, 5, 6, 7, 8}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0.

In some embodiments of the present application, when the number of transmission blocks scheduled by the control information is greater than N, the first communication device supports bundling or multiplexing of the received transmission blocks for response feedback, but does not support A separate response feedback is performed for each of the multiple received transmission blocks, where the N is a preset or configured positive integer; or,

When the number of transmission blocks scheduled by the control information is less than H, the first communication device supports individual response feedback for each of the multiple received transmission blocks, where H is a preset or configured A positive integer.

In some embodiments of the present application, when the control information is used for the first scheduling, the HARQ process indexes of the transmission blocks other than the first transmission block in the plurality of transmission blocks are based on the first The HARQ process index of the transport block is determined; and/or,

In some embodiments of the present application, when the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0,1}, and the control information schedules When the number of transport blocks belongs to the set {2,3,4,5,6,7,8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0; or,

When the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0,1}, and the number of transmission blocks scheduled by the control information belongs to the set { When 2,3,4}, the HARQ process index of the first transport block indicated by the first information takes a value of 0.

In some embodiments of the present application, when the control information schedules 1 transmission block, the first information indicates the value set {0,1,2,3,4,5,6,7} The HARQ process index of the transmission block, when the number of transmission blocks scheduled by the control information belongs to the set {2,3,4,5,6,7,8}, the first transmission block indicated by the first information The HARQ process index is 0; or,

When the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0,1,2,3,4,5,6,7}, and When the control information schedules two transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0, 2}, and the number of transmission blocks scheduled by the control information belongs to the set {3 ,4,5,6,7,8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0; or,

When the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0,1}, and when the control information schedules 2 transmission blocks, the first information A piece of information indicates the HARQ process index of the transport block in the value set {0, 2}. When the number of transport blocks scheduled by the control information belongs to the set {3, 4}, the first information indicated by the first information The HARQ process index of each transport block is 0.

In some embodiments of the present application, when the control information schedules 2 transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0, 2, 4, 6}, When the control information schedules 3 transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0, 3, 4}, and the number of transmission blocks scheduled by the control information When belonging to the set {4,5,6,7,8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0; or,

When the control information schedules 2 transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0, 2, 4, 6}, and the control information schedules 4 transmission blocks When the first information indicates the HARQ process index of the first transport block in the value set {0,4}, the number of transport blocks scheduled by the control information belongs to the set {3,5,6,7, 8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0.

It can be seen from the example description of the application in the foregoing embodiment that, in order to enable the first communication device to obtain the number of transmission blocks determined by the second communication device, the second communication device may generate a first message and send the first message to The first communication device, so that the first communication device can obtain the number of transmission blocks determined by the second communication device according to the received first information. In order to save the instruction overhead of the control information, the first information generated by the second communication device in the embodiment of the present application may be used to indicate that the control information is used for scheduling of a single transmission block or for the first scheduling. In the embodiment of the present application, the HARQ process index corresponding to each transmission block of the downlink information scheduling can be restricted, so that the bit overhead of the control information can be optimized, and the transmission performance of the control information can be improved.

It should be noted that the information interaction and execution process between the various modules/units of the above-mentioned device are based on the same concept as the method embodiment of this application, and the technical effect brought by it is the same as that of the method embodiment of this application, and the specific content may be Please refer to the description in the method embodiment shown in the foregoing application, which will not be repeated here.

An embodiment of the present application further provides a computer storage medium, wherein the computer storage medium stores a program, and the program executes a part or all of the steps recorded in the foregoing method embodiment.

As shown in FIG. 7, it is a schematic structural diagram of another device according to an embodiment of this application. The device is a first communication device. The first communication device may include a processor 71 (for example, a CPU), a memory 72, and a transmitter 74. And the receiver 73; the transmitter 74 and the receiver 73 are coupled to the processor 71, and the processor 71 controls the sending action of the transmitter 74 and the receiving action of the receiver 73. The memory 72 may include a high-speed RAM memory, or may also include a non-volatile memory NVM, such as at least one disk memory. The memory 72 may store various instructions for completing various processing functions and implementing the methods of the embodiments of the present application. step. Optionally, the first communication device involved in the embodiment of the present application may further include one or more of a power supply 75, a communication bus 76, and a communication port 77. The receiver 73 and the transmitter 74 may be integrated in the transceiver of the first communication device, or may be independent receiving and transmitting antennas on the first communication device. The communication bus 76 is used to implement communication connections between components. The aforementioned communication port 77 is used to implement connection and communication between the first communication device and other peripherals.

In the embodiment of the present application, the above-mentioned memory 72 is used to store computer executable program code, and the program code includes instructions; when the processor 71 executes the instructions, the instructions cause the processor 71 to perform the processing actions of the first communication device in the foregoing method embodiments. , The transmitter 74 is caused to execute the sending action of the first communication device in the foregoing method embodiment, and its implementation principle and technical effect are similar, and will not be repeated here.

As shown in FIG. 8, it is a schematic structural diagram of another device according to an embodiment of this application. The device is a second communication device. The second communication device may include: a processor (for example, a CPU) 81, a memory 82, and a receiver 83. The receiver 83 and the transmitter 84 are coupled to the processor 81, and the processor 81 controls the receiving action of the receiver 83 and the sending action of the transmitter 84. The memory 82 may include a high-speed RAM memory, or may also include a non-volatile memory NVM, such as at least one disk memory. The memory 82 may store various instructions to complete various processing functions and implement the methods of the embodiments of the present application. step. Optionally, the second communication device involved in the embodiment of the present application may further include one or more of a power supply 85, a communication bus 86, and a communication port 87. The receiver 83 and the transmitter 84 may be integrated in the transceiver of the second communication device, or may be independent receiving and transmitting antennas on the second communication device. The communication bus 86 is used to implement communication connections between components. The aforementioned communication port 87 is used to implement connection and communication between the second network device and other peripherals.

In another possible design, when the communication device is a chip in a terminal device or a network device, the chip includes: a processing unit and a communication unit. The processing unit may be, for example, a processor, and the communication unit may be, for example, an input. /Output interface, pin or circuit, etc. The processing unit can execute the computer-executable instructions stored in the storage unit, so that the chip in the terminal executes the wireless communication method of any one of the foregoing first aspect. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit in the terminal located outside the chip, such as a read-only memory (read-only memory). -only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.

Among them, the processor mentioned in any of the above can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above The first aspect is an integrated circuit for program execution of the wireless communication method.

In addition, it should be noted that the device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physically separate The physical unit can be located in one place or distributed across multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments. In addition, in the drawings of the device embodiments provided in the present application, the connection relationship between the modules indicates that they have a communication connection between them, which can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative work.

Through the description of the above embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general hardware. Of course, it can also be implemented by dedicated hardware including dedicated integrated circuits, dedicated CPUs, dedicated memory, Dedicated components and so on to achieve. Under normal circumstances, all functions completed by computer programs can be easily implemented with corresponding hardware, and the specific hardware structure used to achieve the same function can also be diverse, such as analog circuits, digital circuits or dedicated Circuit etc. However, for this application, software program implementation is a better implementation in more cases. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a computer floppy disk. , U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc., including several instructions to make a computer device (which can be A personal computer, server, or network device, etc.) execute the method described in each embodiment of the present application.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website site, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Claims

A data transmission method, characterized by comprising:

The first communication device receives the first information sent by the second communication device;

Wherein, the first information includes X bits, and X is a positive integer;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information sent by the second communication device is used for scheduling a single transmission block;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first scheduling, where the first scheduling means that the control information can schedule multiple transmission blocks, and There are newly transmitted transmission blocks and retransmitted transmission blocks among all transmission blocks that can be scheduled by the control information;

Determining, by the first communication device, the number of transmission blocks scheduled by the control information according to the bit state of the first information, and determining the size of the transmission block scheduled by the control information according to the control information;

The first communication device receives the data sent by the second communication device according to the determined number of transmission blocks and the size of the transmission block, or the first communication device according to the determined number of transmission blocks and the transmission block To send data to the second communication device.
The method of claim 1, wherein the method further comprises:

The first communication device receives high-layer signaling sent by the second communication device, where the high-layer signaling includes the first information; or,

The first communication device receives control information sent by the second communication device, where the control information includes the first information.
A data transmission method, characterized by comprising:

The second communication device determines the number of transmission blocks scheduled by the control information, and the second communication device determines the size of the transmission block scheduled by the control information;

The second communication device generates the first information and sends the first information to the first communication device. The bit status of the first information indicates the number of transmission blocks scheduled by the control information. The bit status indicates the number of transmission blocks scheduled by the control information;

Wherein, the first information includes X bits, and X is a positive integer;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information sent by the second communication device is used for scheduling a single transmission block;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first scheduling, where the first scheduling means that the control information can schedule multiple transmission blocks, and There are newly transmitted transmission blocks and retransmitted transmission blocks among all transmission blocks that can be scheduled by the control information;

The second communication device receives the data sent by the first communication device according to the determined number of transmission blocks and the size of the transmission block, or the second communication device according to the determined number of transmission blocks and the transmission block To send data to the first communication device.
The method according to claim 3, wherein the method further comprises:

The second communication device sends high-layer signaling to the first communication device, where the high-layer signaling includes the first information; or,

The second communication device sends control information to the first communication device, and the control information includes the first information.
A communication device, wherein the communication device is specifically a first communication device, and the first communication device includes:

A receiving module, configured to receive the first information sent by the second communication device;

Wherein, the first information includes X bits, and X is a positive integer;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information sent by the second communication device is used for scheduling a single transmission block;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first scheduling, where the first scheduling means that the control information can schedule multiple transmission blocks, and There are newly transmitted transmission blocks and retransmitted transmission blocks among all transmission blocks that can be scheduled by the control information;

A processing module, configured to determine the number of transmission blocks scheduled by the control information according to the bit state of the first information, and determine the size of the transmission block scheduled by the control information according to the control information;

The receiving module is further configured to receive data sent by the second communication device according to the determined number of transmission blocks and the size of the transmission block, or the sending module is configured to receive data according to the determined number of transmission blocks and transmission The size of the block to send data to the second communication device.
The communication device according to claim 5, wherein the receiving module is configured to receive high-level signaling sent by the second communication device, and the high-level signaling includes the first information; or, Receiving control information sent by the second communication device, where the control information includes the first information.
A communication device, wherein the communication device is specifically a second communication device, and the second communication device includes:

A processing module, configured to determine the number of transmission blocks scheduled by the control information, and the second communication device determines the size of the transmission block scheduled by the control information;

The processing module is used to generate first information;

A sending module, configured to send first information to the first communication device, where the bit status of the first information indicates the number of transmission blocks scheduled by the control information;

Wherein, the first information includes X bits, and X is a positive integer;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information sent by the second communication device is used for scheduling a single transmission block;

At least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first scheduling, where the first scheduling means that the control information can schedule multiple transmission blocks, and There are newly transmitted transmission blocks and retransmitted transmission blocks among all transmission blocks that can be scheduled by the control information;

The receiving module is configured to receive data sent by the first communication device according to the determined number of transmission blocks and the size of the transmission block, or the sending module is also configured to receive data according to the determined number of transmission blocks and transmission The size of the block to send data to the first communication device.
The communication device according to claim 7, wherein the sending module is configured to send high-level signaling to the first communication device, and the high-level signaling includes the first information; or, to the first communication device Sending control information, where the control information includes the first information.
The method or communication device according to any one of claims 1 to 8, wherein at least one bit state among the bit states corresponding to the X bits can be used to indicate that the control information is used for multiple One transmission block is scheduled, and multiple transmission blocks are newly transmitted transmission blocks; and/or,

Among the bit states corresponding to the X bits, at least one bit state can be used to indicate that the control information is used for scheduling of multiple transmission blocks, and the multiple transmission blocks are all retransmitted transmission blocks.
The method or communication device according to any one of claims 1 to 8, wherein at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for second scheduling Or, the high-level signaling or the control information indicates that the control information is also used for second scheduling, where the high-level signaling is the signaling sent by the second communication device to the first communication device;

The second scheduling means that all transmission blocks scheduled by the control information can only be all newly transmitted transmission blocks or all retransmitted transmission blocks.
The method or communication device according to claim 10, wherein the control information includes a first field, and the first field includes one bit or multiple bits;

When the bit state of the first field belongs to a first state set, the first information indicates that the control information is used for the first scheduling;

When the bit state of the first field belongs to the second state set, the first information indicates that the control information is used for the second scheduling;

The first state set includes one or more bit states of the first field, and the second state set includes one or more bit states of the first field.
The method or communication device according to any one of claims 1 to 11, wherein at least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for the first Three scheduling, wherein the third scheduling means that the control information can schedule multiple transmission blocks, and all transmission blocks that can be scheduled by the control information are newly transmitted transmission blocks; and/or,

At least one of the bit states corresponding to the X bits can be used to indicate that the control information is used for fourth scheduling, where the fourth scheduling means that the control information can schedule multiple transmission blocks, and All transmission blocks that can be scheduled by the control information are retransmitted transmission blocks.
The method or communication device according to any one of claims 1 to 11, wherein the hybrid automatic repeat request HARQ process index of the first transmission block scheduled by the control information is 0, or the The HARQ process index of the first transport block is a preset value, or the HARQ process index of the first transport block is a fixed value; or,

When the number of transmission blocks scheduled by the control information is greater than M, the HARQ process index of the first transmission block among the multiple transmission blocks scheduled by the control information is 0, or a preset value, or a fixed value , Wherein the M is a preset or configured positive integer; and/or,

When the number of transmission blocks scheduled by the control information is less than L, the control information indicates the HARQ process index of the first transmission block among the scheduled transmission blocks in the HARQ process index set, and the HARQ process index set includes at least Two HARQ process indexes, where the L is a preset or configured positive integer.
The method or communication device according to claim 13, wherein the M=1, or the M=2, or the M=3, or the M=4, or the M=5, Or said M=6; or,

The L=2, or the L=3, or the L=4, or the L=5, or the L=6.
The method or communication device according to any one of claims 1 to 11, wherein the number of transmission blocks scheduled by the control information belongs to the set {2,3,4,5,6,7, 8} When the HARQ process index of the first transport block indicated by the first information is 0; or,

When the number of transmission blocks scheduled by the control information belongs to the set {3, 4, 5, 6, 7, 8}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0; or ,

When the number of transmission blocks scheduled by the control information belongs to the set {4, 5, 6, 7, 8}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0.
The method or communication device according to any one of claims 1 to 15, wherein when the number of transmission blocks scheduled by the control information is greater than N, the first communication device supports The transmission block adopts bundling or multiplexing for response feedback, but does not support separate response feedback for each of the multiple received transmission blocks, where the N is a preset or configured positive integer; and / or,

When the number of transmission blocks scheduled by the control information is less than H, the first communication device supports individual response feedback for each of the multiple received transmission blocks, where H is a preset or configured A positive integer.
The method or communication device according to any one of claims 1 to 16, wherein when the control information is used for the first scheduling,

The HARQ process index of the transport blocks other than the first transport block among the plurality of transport blocks is determined according to the HARQ process index of the first transport block; and/or,

Each transmission block in the multiple transmission blocks corresponds to one HARQ process index, and the multiple HARQ process indexes corresponding to the multiple transmission blocks are continuous.
The method or communication device according to any one of claims 1 to 17, wherein:

When the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0,1}, and the number of transmission blocks scheduled by the control information belongs to the set { 2,3,4,5,6,7,8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0; or,

When the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0,1}, and the number of transmission blocks scheduled by the control information belongs to the set { When 2,3,4}, the HARQ process index of the first transport block indicated by the first information takes a value of 0.
The method or communication device according to any one of claims 1 to 17, wherein:

When the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0,1,2,3,4,5,6,7}, and the When the number of transmission blocks scheduled by the control information belongs to the set {2, 3, 4, 5, 6, 7, 8}, the HARQ process index of the first transmission block indicated by the first information takes a value of 0; or ,

When the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0,1,2,3,4,5,6,7}, and When the control information schedules two transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0, 2}, and the number of transmission blocks scheduled by the control information belongs to the set {3 ,4,5,6,7,8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0; or,

When the control information schedules 1 transmission block, the first information indicates the HARQ process index of the transmission block in the value set {0,1}, and when the control information schedules 2 transmission blocks, the first information A piece of information indicates the HARQ process index of the transport block in the value set {0, 2}. When the number of transport blocks scheduled by the control information belongs to the set {3, 4}, the first information indicated by the first information The HARQ process index of each transport block is 0.
The method or communication device according to any one of claims 1 to 17, wherein:

When the control information schedules 2 transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0, 2, 4, 6}, and the control information schedules 3 transmission blocks When the first information indicates the HARQ process index of the first transmission block in the value set {0, 3, 4}, the number of transmission blocks scheduled by the control information belongs to the set {4, 5, 6, 7,8}, the HARQ process index of the first transport block indicated by the first information is 0; or,

When the control information schedules 2 transmission blocks, the first information indicates the HARQ process index of the first transmission block in the value set {0, 2, 4, 6}, and the control information schedules 4 transmission blocks When the first information indicates the HARQ process index of the first transport block in the value set {0,4}, the number of transport blocks scheduled by the control information belongs to the set {3,5,6,7, 8}, the HARQ process index of the first transport block indicated by the first information takes a value of 0.