CN116033487A

CN116033487A - Data transmission method and device

Info

Publication number: CN116033487A
Application number: CN202111675110.4A
Authority: CN
Inventors: 张彦清; 李雪茹
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-10-27
Filing date: 2021-12-31
Publication date: 2023-04-28
Also published as: WO2023071728A1

Abstract

The application discloses a data transmission method and a data transmission device, relates to the field of communication, and can reduce the time delay of data transmission and improve user experience. The method comprises the following steps: and acquiring a first transmission block and sending the first transmission block to the second equipment. Wherein the first transport block comprises at least one first code block comprising first data. The first code block has a size equal to a first value, the first value being derived from the size of the first data. The first value is greater than or equal to the size of the first data and less than the second value. The second value is predefined and the second value is a positive integer.

Description

Data transmission method and device

The priority of the patent application filed by the national intellectual property agency, application number 202111253411.8, entitled "method for indicating XR service", at day 27, 10, 2021, is claimed in this application, the entire contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates to the field of communications, and in particular, to a data transmission method and apparatus.

Background

In a communication system, a transmitting device may periodically transmit Transport Blocks (TBs) to a receiving device. The TB may include a plurality of Code Blocks (CBs), among others. Typically, one CB has a size of 3840 bits or 8448 bits and may include data at multiple times in a cycle. After receiving the TBs, the receiving device may detect the CRC of each CB after channel encoding and decoding (cyclic redundancy check, CRC), and if the detection is successful, detect the CRC of the TBs. If the CRC detection on the TB is successful, the receiving device may upload the data in the TB to a higher layer of the receiving device. If the CRC of the CB after channel coding and re-decoding or the CRC of the TB fails to be detected, the receiving device will not upload the data in the TB to the higher layer of the receiving device, but wait to receive the retransmission of the TB. In the above process, the time delay of data transmission is larger, and the user experience is worse.

Disclosure of Invention

The data transmission method and device can reduce the time delay of data transmission and improve user experience.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

in a first aspect, a data transmission method is provided, and a communication device performing the data transmission method may be a first device; it may also be a module applied in the first device, such as a chip or a chip system. The following describes an example in which the execution subject is a first device. The method comprises the following steps: acquiring a first transmission block, wherein the first transmission block comprises at least one first code block, the first code block comprises first data, the size of the first code block is equal to a first value, the first value is obtained according to the size of the first data, the first value is larger than or equal to the size of the first data and smaller than or equal to a second value, the second value is predefined or preconfigured, and the second value is a positive integer; the first transport block is transmitted to a second device.

Based on the method provided in the first aspect, the first device may acquire the first transport block and send the first transport block to the second device. The size of the first code block in the first transmission block is a first value, and the first value is obtained according to the size of the first data, so that the size of the first code block can be adjusted according to the size of the first data, and a proper size of the code block is obtained. In addition, when the first value is greater than or equal to the size of the first data and less than the second value, the number of data included in the first code block may be made smaller than the number of data included in the code block having the size of the second value. In this case, compared with the code blocks with the second value, if any one data in the first code block is wrong in the transmission process, and the data in the first code block is retransmitted, the influence on other first data can be reduced, or unnecessary data retransmission is reduced, the time delay of data transmission can be reduced, and the user experience is improved. For example, if one code block includes data 1, data 2, and data 3, and data 2 is erroneous in transmission, the first device needs to retransmit data 1, data 2, and data 3. If one code block comprises data 1 and data 2, the data 2 is in error in transmission, the first device needs to retransmit the data 1 and the data 2 without affecting the transmission of the data 3, so that the data 3 can be transmitted to the second device as soon as possible, the second device can process the received data first, the time delay of data transmission can be reduced, and the user experience is improved.

In one possible implementation, the first transmission block further includes at least one second code block including second data, the second code block having a size equal to the second value.

Based on the above possible implementation manner, the first transmission block may further include at least one second code block in addition to the at least one first code block. Wherein the first code block comprises first data and the second code block comprises second data, so that universality of the first transmission block is improved. In addition, the first device may use different encoding modes for the first data and the second data, so that the same transport block carries data with different transmission requirements.

In one possible implementation, the first data is data of a first logical channel and the second data is data of a second logical channel.

Based on the possible implementation manner, the first device may send the first data and the second data through different logic channels. Thus, the first data and the second data may be transmitted in different manners by configuring different parameters (e.g., a size of the first code block, and/or a size of the second code block, and/or a number of the first code blocks included in one transport block, and/or a number of the second modules included in one transport block, etc.) for the first logical channel and the second logical channel.

In one possible implementation, the second value is 3840 bits or 8448 bits.

Based on the above possible implementation, the second value may be a size of a code block defined in the 5G NR protocol. That is, the first device may encode the second data in a manner defined in the 5G NR protocol with little modification to the protocol.

In one possible implementation, the method further includes: first information is sent to the second device, the first information being used to indicate the first value.

Based on the possible implementations described above, the first device may indicate the first value to the second device. Thus, the first device may segment the code blocks according to the first value, and respectively add CRC and perform channel coding to the segmented code blocks, and the second device may determine the code block size of the received data according to the first value, and respectively perform channel decoding and CRC decoding to the code blocks. It will be appreciated that in this case the first device may determine the first value.

In one possible implementation, the first information is further used to indicate at least one of: the semi-static scheduling process number or the number of the first code blocks, and the resources indicated by the semi-static scheduling are used for transmitting the first transport blocks.

Based on the possible implementation manner, if the first information indicates the process number of the semi-static scheduling, the second device may determine the size of the code block corresponding to the process number as the first value, so that the second device determines the size of the code block of the received data according to the first value, and performs channel decoding and CRC decoding on the code blocks respectively. If the first information indicates the number of the first code blocks, the second device may determine symbols and subcarriers respectively occupied by the first code blocks and the second code blocks in the first transport block according to the resources indicated by the semi-static scheduling, the first value and the number of the first code blocks. For example, the second device may determine, according to the first value and the number of the first code blocks, the number of symbols occupied by the first code blocks in the first transmission block, the number of subcarriers corresponding to each symbol in the symbols occupied by the first code blocks, the number of symbols occupied by the second code blocks in the first transmission block, and the number of subcarriers corresponding to each symbol in the symbols occupied by the second code blocks, and further determine, according to the resources indicated by the semi-static scheduling, the symbols occupied by the first code blocks and the subcarriers, and determine, according to the symbols occupied by the second code blocks and the subcarriers. In this manner, the second device may determine which of the received code blocks are the first code blocks and which are the second code blocks.

In one possible implementation, the first information is user-assistance information.

Based on the possible implementation manner, the first device may send the first information to the second device through the user auxiliary information, and further indicate the first value to the second device.

In one possible implementation, the method further includes: second information is received from the second device, the second information being indicative of the first value.

Based on the possible implementation manner, the first device may receive the second information from the second device, so that the first value may be determined according to the second information. In this case, the first value may be determined by the second device. That is, the second device may indicate the first value to the first device after determining the first value. Thus, the first device may segment the code blocks according to the first value, and respectively add CRC and perform channel coding to the segmented code blocks, and the second device may determine the code block size of the received data according to the first value, and respectively perform channel decoding and CRC decoding to the code blocks.

In one possible implementation, the second information is further used to indicate at least one of: the semi-static scheduling process number or the number of the first code blocks, and the resources indicated by the semi-static scheduling are used for transmitting the first transport blocks.

Based on the possible implementation manner, if the second information indicates the process number of the semi-static scheduling, the first device may determine that the size of the code block corresponding to the process number is a first value, so that the first device segments the code block according to the first value, and adds CRC and performs channel coding to the segmented code block respectively. If the second information indicates the number of the first code blocks, the first device may determine symbols and subcarriers respectively occupied by the first code blocks and the second code blocks in the first transport block according to the resources indicated by the semi-static scheduling, the first value and the number of the first code blocks. For example, the first device may determine, according to the first value and the number of the first code blocks, the number of symbols occupied by the first code blocks in the first transmission block, the number of subcarriers corresponding to each symbol in the symbols occupied by the first code blocks, the number of symbols occupied by the second code blocks in the first transmission block, and the number of subcarriers corresponding to each symbol in the symbols occupied by the second code blocks, and further determine, according to the resources indicated by the semi-static scheduling, the symbols occupied by the first code blocks and the subcarriers, and determine, according to the symbols occupied by the second code blocks and the subcarriers. In this manner, the first device may transmit at least one first code block on symbols and subcarriers occupied by the first code block and at least one second code block on symbols and subcarriers occupied by the second code block.

In one possible implementation, the semi-static schedule is an unlicensed schedule.

Based on the possible implementation manner, resources can be configured for the first device through unlicensed scheduling, so that the first device does not need to send a scheduling request to request the resources before data transmission, does not need to wait for scheduling permission, and reduces transmission delay.

In one possible implementation, before receiving the second information from the second device, the method further comprises: third information is sent to the second device, the third information being used to indicate the size of the first data.

Based on the possible implementation manner, the first device may send third information to the second device, so that the second device determines the first value according to the third information.

In a possible implementation, the third information is further used to indicate a generation period of the first data.

Based on the possible implementation manner, the second device may determine the first value according to the size of the first data and the generation period of the first data.

In one possible implementation, the third information is user assistance information.

Based on the possible implementation manner, the first device may send third information to the second device through the user auxiliary information, so that the second device may determine the first value according to the third information.

In one possible implementation, after transmitting the first transport block to the second device, the method further includes: receiving fourth information from the second device, the fourth information being used to schedule a second transport block, the second transport block comprising a redundancy version that is the same as or different from a code block in the first transport block; and sending the second transmission block to the second device according to the fourth information.

Based on the possible implementation manner, the first device may receive the fourth information from the second device, and retransmit all or part of the code blocks of the first transport block according to the fourth information.

In one possible implementation, the fourth information includes a first field for indicating a code block in the first transport block included in the second transport block.

Based on the above possible implementation manner, the first device may determine, according to the fourth information, a code block that needs to be retransmitted, that is, a code block that should be included in the second transport block.

In one possible implementation, if the first transport block includes the at least one first code block, the first field is used to indicate the first code block of the first transport blocks included in the second transport block.

Based on the possible implementation manner, in the case that the first code block is included in the first transport block and the second code block is not included, the first field may indicate the first code block in the first transport block included in the second transport block. In this way, the first device may determine the code blocks that need to be retransmitted, i.e. the code blocks that should be included in the second transport block, from the first field.

In one possible implementation, the first transport block further includes the at least one second code block, and the first field is further used to indicate the second code block in the first transport block included in the second transport block, or the first field is further used to indicate whether the second transport block includes the second code block.

Based on the above possible implementation manner, in the case that the first code block and the second code block are included in the first transport block, the first field may indicate the first code block in the first transport block included in the second transport block and the second code block in the first transport block included in the second transport block, or the first field may indicate the first code block in the first transport block included in the second transport block, and whether the second transport block includes the second code block. In this way, the first device may determine the code blocks that need to be retransmitted, i.e. the code blocks that should be included in the second transport block, from the first field.

In one possible implementation, the second transport block includes code blocks that fail to decode the first transport block by the second device.

Based on the possible implementation manner, the first device may retransmit the code block that fails to be decoded by the second device for the first transport block, without retransmitting the code block that is decoded correctly by the second device for the first transport block, so as to reduce resource overhead.

In one possible implementation, the fourth information is downlink control information or side-downlink control information, and the first field is a modulation and coding strategy field.

Based on the possible implementation manners, the second device may schedule the first device to retransmit through the downlink control information or the side-link control information, and indicate the code blocks that should be included in the second transport block through the modulation and coding policy field in the downlink control information or the side-link control information.

In a second aspect, a data transmission method is provided, and a communication apparatus performing the data transmission method may be a second device; or may be a module, such as a chip or a system of chips, for application in the second device. The following describes an example in which the execution subject is a second device. The method comprises the following steps: receiving a first transport block from a first device, the first transport block comprising at least one first code block, the first code block comprising first data, the first code block having a size equal to a first value, the first value being derived from the size of the first data, the first value being greater than or equal to the size of the first data and less than or equal to a second value, the second value being predefined, the second value being a positive integer; decoding the first transport block; and uploading the data in the code block with the correct cyclic redundancy check code check in the first transmission block to a higher layer of the second device.

Based on the method provided in the second aspect, the second device may receive the first transport block from the first device, decode the first transport block, and upload the data in the code block with the correct crc check code in the first transport block to the higher layer of the second device. The size of the first code block in the first transmission block is a first value, and the first value is obtained according to the size of the first data, so that the size of the first code block can be adjusted according to the size of the first data, and a proper size of the code block is obtained. In addition, when the first value is greater than or equal to the size of the first data and less than the second value, the number of data included in the first code block may be made smaller than the number of data included in the code block having the size of the second value. In this case, compared with the code blocks with the second value, if any one data in the first code block is wrong in the transmission process, and the data in the first code block is retransmitted, the influence on other first data can be reduced, or unnecessary data retransmission is reduced, the time delay of data transmission can be reduced, and the user experience is improved. For example, if one code block includes data 1, data 2, and data 3, and data 2 is erroneous in transmission, the first device needs to retransmit data 1, data 2, and data 3. If one code block comprises data 1 and data 2, the data 2 is in error in transmission, the first device needs to retransmit the data 1 and the data 2 without affecting the transmission of the data 3, so that the data 3 can be transmitted to the second device as soon as possible, the second device can process the received data first, the time delay of data transmission can be reduced, and the user experience is improved. In addition, after the second device receives the first transport block, the data in the code block with the correct cyclic redundancy check code check in the first transport block can be uploaded to a higher layer of the second device. Therefore, the transmission delay of the data can be further reduced, so that the higher layer can firstly process the received data and respond to the first device, and the user experience is improved.

Based on the above possible implementation manner, the first transmission block may further include at least one second code block in addition to the at least one first code block. Wherein the first code block includes first data and the second code block includes second data, so that universality of the code blocks in the first transmission block is improved. In addition, different coding modes can be adopted for the first data and the second data, so that the same transmission block can bear data with different transmission requirements.

In one possible implementation, the first data is data of a first logical channel, and the second data is data of a second logical channel.

Based on the above possible implementation manner, the first data and the second data may be transmitted through different logical channels. Thus, the first data and the second data may be transmitted in different manners by configuring different parameters (e.g., a size of the first code block, and/or a size of the second code block, and/or a number of the first code blocks included in one transport block, and/or a number of the second modules included in one transport block, etc.) for the first logical channel and the second logical channel.

In one possible implementation, the second value is 3840 bits or 8448 bits.

In one possible implementation, the method further includes: first information is received from the first device, the first information indicating the first value.

Based on the possible implementation manner, the second device may receive first information from the first device for indicating the first value. In this case, the first value may be determined by the first device. Thus, the first device may segment the code blocks according to the first value, and add CRC and perform channel coding to the segmented code blocks, respectively, and the second device may determine the code block size of the received data according to the first value, and perform channel decoding and CRC decoding on the code blocks, respectively.

Based on the possible implementation manner, the second device may receive the first information from the first device through the user auxiliary information, so as to determine the first value.

In one possible implementation, the method further includes: second information is sent to the first device, the second information being used to indicate the first value.

Based on the possible implementation manner, the second device may send second information to the first device to indicate the first value to the first device. In this case, the first value may be determined by the second device. That is, the second device may indicate the first value to the first device after determining the first value. Thus, the first device may segment the code blocks according to the first value, and add CRC and perform channel coding to the segmented code blocks, respectively, and the second device may determine the code block size of the received data according to the first value, and perform channel decoding and CRC decoding on the code blocks, respectively.

In one possible implementation, before sending the second information to the first device, the method further includes: third information is received from the first device, the third information indicating a size of the first data.

Based on the possible implementation manner, the second device may receive the third information sent by the first device before sending the second information to the first device. In this manner, the second device may determine the first value based on the third information prior to indicating the first value to the first device.

Based on the possible implementation manner, the second device may receive the third information from the first device through the user auxiliary information, and further determine the first value according to the third information.

In one possible implementation, after decoding the first transport block, the method further includes: if the first transmission block is checked for errors, fourth information is sent to the first device, wherein the fourth information is used for scheduling a second transmission block, and the second transmission block comprises a redundancy version which is the same as or different from a code block in the first transmission block; receiving a second transport block from the first device; the second transport block is decoded.

Based on the possible implementation manner, if the second device checks the first transmission block for errors, the second device may send fourth information to the first device, so that the first device may perform all code blocks or part of code blocks according to the fourth information.

Based on the possible implementation manner, the second device may indicate, to the first device, a code block that needs to be retransmitted, that is, a code block that should be included in the second transport block, through the first field in the fourth information.

In one possible implementation, the first transport block further includes at least one second code block, and the first field is further used to indicate the second code block in the first transport block included in the second transport block, or the first field is further used to indicate whether the second transport block includes the second code block.

In a third aspect, a communication device is provided for implementing the above method. The communication means may be the first device of the first aspect described above, or an apparatus comprising the first device described above. The communication device comprises corresponding modules, units or means (means) for realizing the method, wherein the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

With reference to the third aspect, in one possible implementation manner, the communication apparatus may include a processing module and a transceiver module. The processing module may be configured to implement the processing functions of any of the aspects described above and any possible implementation thereof. The processing module may be, for example, a processor. The transceiver module, which may also be referred to as a transceiver unit, is configured to implement the transmitting and/or receiving functions of the first aspect and any possible implementation manner thereof. The transceiver module may be formed by a transceiver circuit, transceiver or communication interface.

With reference to the third aspect, in one possible implementation manner, the transceiver module includes a transmitting module and a receiving module, which are respectively configured to implement the transmitting and receiving functions in the first aspect and any possible implementation manner thereof.

In a fourth aspect, a communication device is provided for implementing the above method. The communication means may be the second device of the second aspect described above, or an apparatus comprising the second device described above. The communication device comprises corresponding modules, units or means (means) for realizing the method, wherein the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

With reference to the fourth aspect, in a possible implementation manner, the communication device may include a transceiver module and a processing module. The transceiver module, which may also be referred to as a transceiver unit, is configured to implement the transmitting and/or receiving functions of the second aspect and any possible implementation thereof. The transceiver module may be formed by a transceiver circuit, transceiver or communication interface. The processing module may be adapted to implement the processing functions of the second aspect and any possible implementation thereof. The processing module may be, for example, a processor.

With reference to the fourth aspect, in one possible implementation manner, the transceiver module includes a transmitting module and a receiving module, which are respectively configured to implement the transmitting and receiving functions in the second aspect and any possible implementation manner thereof.

In a fifth aspect, there is provided a communication apparatus comprising: a processor; the processor is configured to perform the method according to the first aspect described above in response to the instructions after being coupled to the memory and reading the instructions in the memory. The communication means may be the first device of the first aspect described above, or an apparatus comprising the first device described above.

In a sixth aspect, there is provided a communication apparatus comprising: a processor; the processor is configured to perform the method according to the second aspect described above in response to the instructions after being coupled to the memory and reading the instructions in the memory. The communication means may be the first device of the second aspect described above, or an apparatus comprising the second device described above.

With reference to the fifth or sixth aspect, in a possible implementation manner, the communication apparatus further includes a memory, where the memory is configured to store necessary program instructions and data.

With reference to the fifth aspect or the sixth aspect, in one possible implementation manner, the communication device is a chip or a chip system. Alternatively, when the communication device is a chip system, the communication device may be formed by a chip, or may include a chip and other discrete devices.

In a seventh aspect, there is provided a communication apparatus comprising: a processor and interface circuit; interface circuit for receiving computer program or instruction and transmitting to processor; the processor is configured to execute the computer program or instructions to cause the communication device to perform the method as described in the first aspect above.

An eighth aspect provides a communication apparatus comprising: a processor and interface circuit; interface circuit for receiving computer program or instruction and transmitting to processor; the processor is configured to execute the computer program or instructions to cause the communication device to perform the method as described in the second aspect above.

With reference to the seventh aspect or the eighth aspect, in a possible implementation manner, the communication device is a chip or a chip system. Alternatively, when the communication device is a chip system, the communication device may be formed by a chip, or may include a chip and other discrete devices.

In a ninth aspect, there is provided a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of the first aspect described above.

In a tenth aspect, there is provided a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of the second aspect described above.

In an eleventh aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above.

In a twelfth aspect, there is provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the second aspect described above.

The technical effects caused by any one of the possible implementation manners of the third aspect to the twelfth aspect may be referred to the technical effects caused by any one of the first aspect to the second aspect or the different possible implementation manners of any one of the first aspect to the second aspect, which are not described herein.

In a thirteenth aspect, a communication system is provided, the communication system comprising a first device for performing the method of the first aspect described above, and a second device for performing the method of the second aspect described above.

Drawings

Fig. 1A is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 1B is a schematic diagram one of unlicensed scheduling data transmission provided in an embodiment of the present application;

fig. 1C is a schematic diagram two of unlicensed scheduling data transmission provided in an embodiment of the present application;

fig. 1D is a schematic diagram of pose information transmission provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a data transmission process between devices according to an embodiment of the present application;

FIG. 3 is a schematic diagram I of an encoding process according to an embodiment of the present application;

fig. 4 is a schematic diagram of a pose information generating period provided in an embodiment of the present application;

fig. 5 is a schematic hardware structure of a communication device according to an embodiment of the present application;

fig. 6 is a flow chart of a data transmission method according to an embodiment of the present application;

FIG. 7A is a second schematic diagram of an encoding process according to an embodiment of the present disclosure;

FIG. 7B is a third schematic diagram of an encoding process provided in an embodiment of the present application;

fig. 8 is a schematic diagram of a resource allocation manner provided in an embodiment of the present application;

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

Detailed Description

The following describes embodiments of the present application in detail with reference to the accompanying drawings.

The method provided by the embodiment of the application can be used for various communication systems. For example, the communication system may be a long term evolution (long term evolution, LTE) system, a fifth generation (5th generation,5G) communication system, a wireless-fidelity (WiFi) system, a third generation partnership project (3rd generation partnership project,3GPP) related communication system, a future evolution communication system, or a system incorporating multiple systems, without limitation. Wherein 5G may also be referred to as New Radio (NR). The method provided in the embodiment of the present application will be described below by taking the communication system 10 shown in fig. 1A as an example.

As shown in fig. 1A, a schematic architecture of a communication system 10 according to an embodiment of the present application is provided. In fig. 1A, communication system 10 may include a device 101 and a device 102 that may communicate with device 101. Fig. 1A is only a schematic diagram, and does not constitute a limitation on the applicable scenario of the technical solution provided in the present application. As an example, the communication system 10 shown in fig. 1A may be applied to at least the following scenario 1 or scenario 2.

Scene 1: device 101 may be a terminal 101 and device 102 may be a network device 102. In such a scenario, network device 102 may provide wireless access services for terminal 101. Specifically, the network device 102 corresponds to a service coverage area, and the terminal 101 entering the area may communicate with the network device 102 through the Uu port, so as to receive the radio access service provided by the network device 102. Alternatively, the service coverage area may comprise one or more cells. The terminal 101 and the network device 102 may communicate via a Uu port link. Among them, the Uu port link can be divided into an Uplink (UL) and a Downlink (DL) according to the direction of data transmitted thereon. Uplink data transmitted from the terminal 101 to the network device 102 can be transmitted on UL, and downlink data transmitted from the network device 102 to the terminal 101 can be transmitted on DL.

In one possible implementation, in order to reduce transmission delay, data transmission between the terminal 101 and the network device 102 may be performed in an unlicensed scheduling manner. Specifically, terminal 101 may send data to network device 102 over previously configured or activated resources. The resources may be configured by the network device 102 for the terminal 101 through higher layer signaling, such as radio resource control (radio resource control, RRC) layer signaling, or the resources may be defined in a protocol. In this way, the terminal 101 does not need to send a scheduling request to the network device 102 to request resources before data transmission, and does not need to wait for an uplink scheduling grant of the network device 102, thereby reducing transmission delay.

As an example, before the terminal 101 transmits data, the network device 102 configures periodic resources for the terminal 101 through RRC signaling, such as: at least one of a period of a transmission opportunity, a location of the transmission opportunity within the period, a modulation and coding scheme (modulation and coding scheme, MCS) level, or a multiple input multiple output (multiple input multiple output, MIMO) parameter. When there is data to be transmitted, the terminal 101 may directly transmit the data on the configured resources. For example, as shown in fig. 1B, after the network device 102 sends RRC signaling and configures periodic resources for the terminal 101, when new data arrives, the terminal 101 sends the new data on the configured resources, that is, the terminal 101 may perform data transmission of unlicensed scheduling.

As another example, the network device 102 configures parameters such as a period of a transmission opportunity for the terminal 101 through RRC signaling before the terminal 101 transmits data. Subsequently, the network device 102 activates uplink transmission by means of downlink control information (downlink control information, DCI). Wherein, the DCI may configure at least one of a position of a transmission opportunity, an MCS level, or a MIMO parameter within a period. Then, when there is data to be transmitted, the terminal 101 transmits the data on the configured resource, and when there is no data to be transmitted, skips the transmission opportunity. For example, as shown in fig. 1C, after the network device 102 sends RRC signaling, configures parameters such as a period of a transmission opportunity for the terminal 101, and sends DCI to activate uplink transmission, when new data arrives, the terminal 101 sends the new data on the configured resource, that is, the terminal 101 may perform data transmission of unlicensed scheduling.

Scene 2: device 101 may be terminal 101 and device 102 may be terminal 102. In this scenario, the terminal 101 and the terminal 102 may communicate with each other over a direct communication link. This direct communication link may be referred to as a side link or Sidelink (SL). For example: terminal 101 may send information to terminal 102 via the side-link, and terminal 102 may also send information to terminal 101 via the side-link.

In one possible implementation, in order to reduce the transmission delay, the data transmission between the terminal 101 and the terminal 102 may be performed in an unlicensed scheduling manner. Specifically, terminal 101 may send data to terminal 102 over resources that are configured or activated in advance. Wherein the resource may be configured by the network device (not shown in fig. 1A) for the terminal 101 through higher layer signaling, such as RRC layer signaling, or the resource may be configured by the terminal 102 for the terminal 101, or the resource may be defined in a protocol. In this way, the terminal 101 does not need to send a scheduling request to the network device or the terminal 102 to request resources before data transmission, and does not need to wait for a scheduling grant of the network device or the terminal 102, thereby reducing transmission delay. Similarly, terminal 102 may also transmit data to terminal 101 on previously configured or activated resources. The resource may be configured by the network device (not shown in fig. 1A) for the terminal 102 through higher layer signaling, such as RRC layer signaling, or the resource may be configured by the terminal 101 for the terminal 102, or the resource may be defined in a protocol. In this way, the terminal 102 does not need to send a scheduling request to the network device or the terminal 101 to request resources before data transmission, and does not need to wait for a scheduling grant of the network device or the terminal 101, thereby reducing transmission delay.

The process of configuring the unlicensed scheduling resource for the terminal 101 or the terminal 102 by the network device may refer to the corresponding description in the above scenario 1, which is not described herein. The specific process of performing unlicensed scheduling data transmission between terminals will be described below by taking the terminal 102 as an example of configuring unlicensed scheduling resources for the terminal 101.

As an example, before the terminal 101 transmits data, the terminal 102 configures periodic resources for the terminal 101 through RRC signaling, such as: at least one of a period of a transmission opportunity, a position of the transmission opportunity within the period, an MCS level, or a MIMO parameter. When there is data to be transmitted, the terminal 101 may directly transmit the data on the configured resources.

As another example, before the terminal 101 transmits data, the terminal 102 configures parameters such as a period of a transmission opportunity for the terminal 101 through RRC signaling. Subsequently, the terminal 102 activates sidelink transmission through sidelink control information (sidelink control information, SCI). Wherein the SCI may configure at least one of a location of a transmission opportunity, an MCS level, or a MIMO parameter within a period. Then, when there is data to be transmitted, the terminal 101 transmits the data on the configured resource, and when there is no data to be transmitted, skips the transmission opportunity.

The following describes a network device and a terminal in an embodiment of the present application.

The network device in the embodiment of the present application may be any device having a wireless transceiver function. Including but not limited to: an evolved node B (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, a base station (gNodeB or gNB) or a transceiver point (transmission receiving point/transmission reception point, TRP) in NR, a base station for 3GPP subsequent evolution, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and the like. The base station may be: macro base station, micro base station, pico base station, small station, relay station, or balloon station, etc. Multiple base stations may support networks of the same technology as mentioned above, or may support networks of different technologies as mentioned above. A base station may contain one or more co-sited or non-co-sited TRPs. The network device may also be a wireless controller in the context of a cloud wireless access network (cloud radio access network, CRAN). The network device may also be a Centralized Unit (CU), and/or a Distributed Unit (DU). The network device may also be a server, a wearable device, a machine communication device, or an in-vehicle device, etc. The following description will take a network device as an example of a base station. The plurality of network devices may be the same type of base station or different types of base stations. The base station may communicate with the terminal or may communicate with the terminal through a relay station. The terminal may communicate with a plurality of base stations of different technologies, for example, the terminal may communicate with a base station supporting an LTE network, may communicate with a base station supporting a 5G network, and may support dual connectivity with the base station of the LTE network and the base station of the 5G network. In the embodiment of the present application, the means for implementing the function of the network device may be the network device; or may be a device, such as a system-on-a-chip, capable of supporting the network device to perform this function, which may be installed in or used in conjunction with the network device. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices. In the method provided in the embodiment of the present application, taking an example that a device for implementing a function of a network device is a network device, the method provided in the embodiment of the present application is described.

The terminal in the embodiment of the application is equipment with a wireless receiving and transmitting function. The terminal can be deployed on land, including indoor or outdoor, hand-held or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). A terminal may also be referred to as a terminal device, which may be a User Equipment (UE), wherein the UE includes a handheld device, an in-vehicle device, a wearable device, or a computing device with wireless communication capabilities. The UE may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiver function, for example. The terminal device may also be a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city, or a wireless terminal in smart home (smart home), etc. In the embodiment of the present application, the device for implementing the function of the terminal may be the terminal; or may be a device, such as a chip system, capable of supporting the terminal to perform the function, which may be installed in the terminal or used in cooperation with the terminal. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices. In the method provided in the embodiment of the present application, the device for implementing the function of the terminal is an example of the terminal, and the method provided in the embodiment of the present application is described.

By way of example, and not limitation, in this application, a terminal may be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

The terminal in the present application may also be a VR terminal, an AR terminal, or a Mixed Reality (MR) terminal. VR terminals, AR terminals, and MR terminals may all be referred to as extended reality (extended reality) terminals. The XR terminal may be, for example, a head mounted device (e.g., a helmet or glasses), an all-in-one device, a television, a display, an automobile, a vehicle mounted device, a tablet or smart screen, etc. XR terminals may access the network either wirelessly or by wire, for example, through WiFi or 5G systems. The XR terminal can present XR data to the user, who can experience diversified XR services by wearing or using the XR terminal. XR data may also be referred to as XR service data (i.e., XR service generated data) including one or more of VR data, AR data, MR data, video data, audio data, or picture data. For example, the XR data includes at least one of: pose information, audio information, or video information. Wherein the pose information may indicate a position and/or a pose of the user. The audio information includes at least one piece of audio. The video information includes at least one video or at least one picture.

XR services typically have low latency and high rate requirements in order to enhance the user experience. The XR service may be implemented by XR technology. The XR technology has the advantages of multiple visual angles, strong interactivity and the like, can provide a brand new experience for users, and has great application value and commercial potential. XR technology includes VR technology, AR technology, MR technology, and the like, and can be widely used in many fields such as entertainment, games, medical treatment, advertising, industry, online education, and engineering. VR technology primarily refers to the rendering of visual and audio scenes to simulate as much as possible the sensory stimuli of visual and audio to the user in the real world. VR technology typically requires the user to wear an XR terminal (e.g., a headset) to simulate vision and/or hearing to the user. VR techniques may also track actions of users to update simulated visual and/or auditory content in time. AR technology primarily refers to providing visual and/or auditory additional information or artificially generated content in a user-perceived real-world environment. The acquisition of the real environment by the user may be direct (e.g., without sensing, processing, and rendering), or indirect (e.g., via sensor or the like), and further enhanced. MR technology is the insertion of virtual elements into a physical scene in order to provide the user with an immersive experience in which these elements are part of the real scene.

In some embodiments, the process of transferring data between device 101 and device 102 may be as shown in fig. 2. In fig. 2, the devices 101 and 102 include a packet data convergence protocol (packet data convergence protocol, PDCP) layer, a radio link control (radio link control, RLC) layer, a medium access control (media access control, MAC) layer, and a Physical (PHY) layer.

Taking the device 101 as an example of sending the data 1 to the device 102, when the data 1 arrives at the PDCP layer in the device 101, the PDCP layer adds a PDCP header to the data 1 to obtain a PDCP protocol data unit (protocol data unit, PDU), and submits the PDCP PDU to the RLC layer in the device 101 as an RLC service data unit (service data unit, SDU), where the PDCP header may include a Sequence Number (SN). The RLC layer of the apparatus 101 has a segmentation function, and may segment a received RLC SDU into a plurality of data packets according to a transmission opportunity notified by the MAC layer, and add an RLC header to each data packet to obtain a plurality of RLC PDUs. The RLC layer may then submit RLC PDUs to the MAC layer in the device 101 via a Logical Channel (LCH). The MAC layer in the device 101 processes the RLC PDU using the MAC configuration, generates a bit sequence (bit sequence) of the MAC layer, and delivers the bit sequence to the PHY layer in the device 101. After receiving the bit sequence, the PHY layer in the device 101 may add a CRC to the bit sequence and perform segmentation processing to obtain at least one CB. And then, the PHY layer adds CRC for each CB, and performs channel coding on each CB added with CRC to obtain the TB. The TB includes coded CBs. For example, as shown in fig. 3, after adding a CRC to a bit sequence of a MAC layer, a PHY layer in the device 101 may perform segmentation processing to obtain 3 CBs, add a CRC to each CB, and perform channel coding, such as low-density parity-check code (low density parity check, LDPC) coding, on each CB to which the CRC is added to obtain a TB. Subsequently, the PHY layer in device 101 may send the TB to device 102.

After receiving the TB, the PHY layer in the device 102 may decode the CB encoded in the TB, detect the CRC of the decoded CB, if the detection is successful, detect the CRC of the TB, and if the detection is successful, submit the successfully detected TB to the MAC layer in the device 102. The MAC layer in the device 102 processes the TBs using the MAC configuration to obtain RLC PDUs and delivers the RLC PDUs to the RLC layer in the device 102 through the logical channels. The RLC layer in the device 102 may strip the RLC header of the RLC PDU to obtain the PDCP PDU. If the RLC layer in the apparatus 101 performs segmentation processing on the RLC SDU, the RLC layer in the apparatus 102 may further combine multiple PDCP PDUs into one PDCP PDU. The RLC layer in the device 102 also has the function of retransmitting or dropping packets. For example, in acknowledged mode (acknowledgement mode, AM), if the RLC layer in device 102 receives an incomplete RLC PDU (e.g., after the RLC layer in device 101 segments an RLC SDU, the data in one RLC SDU may be segmented into bit sequences of different MAC layers. Therefore, the RLC layer in device 102 may possibly experience an incomplete received RLC PDU), the RLC layer in device 102 may initiate a retransmission mechanism, or in unacknowledged mode (unacknowledgement mode, UM), if the RLC layer in device 102 receives an incomplete received RLC PDU, the RLC layer may directly discard the data packet. Thereafter, the RLC layer in the device 102 delivers the resulting PDCP PDU to the PDCP layer in the device 102. The PDCP layer in the device 102 strips the PDCP header of the PDCP PDU to obtain data 1. The PDCP layer in the device 102 also has a sequencing function, i.e., the PDCP layer can sequence the data packets according to the SNs and deliver the data in the data packets to higher layers, such as an application layer, of the device 102 in the sequence of the sequence. If the device 102 receives TBs out of order, the PDCP layer of the device 102 may detect out-of-order packets. At this time, the PDCP layer stops delivering data to the higher layer, but waits until the reception of the data packet in the out-of-order packet is successful, and delivers the data in the data packet to the higher layer in order. For example, if the PDCP layer in the device 102 receives the SN 1 packet a and the SN 3 packet c, but does not receive the SN 2 packet b, the PDCP layer delivers the data in the SN 1 packet a to the higher layer of the device 102, but stops delivering the data in the SN c packet, and waits until the data in the SN 1 packet b is received, then delivers the data in the SN 3 packet to the higher layer.

Optionally, after receiving data 1, the higher layer of device 102 may send data 1 to a server (not shown in fig. 1A) for processing and transmission of data 1 by the server.

For example, taking the data 1 as pose information, as shown in fig. 1D, the device 101 may capture the motion of the user, and after obtaining the pose information, the pose information may be sent to a server (e.g. a cloud server) through the device 102. After receiving the pose information, the server may render and encode (e.g., source encode) the pose information to obtain processed information. Subsequently, the server may send the processed information to the device 101 via the device 102. Device 101 provides a user with a diversified XR experience (e.g., displaying processed information, etc.) by processing the processed information.

In a communication system, the size of CB is typically a fixed value, as in 5G NR, CB size is defined as 3840 bits or 8448 bits. If the size of one data is less than half the fixed value, one CB may include a plurality of such data. In this case, if any one data is in error in the transmission process, the entire CB or TB where the data is located will be retransmitted, so that the transmission delay of the data is larger and the user experience is worse.

Illustratively, the pose information is sent by the device 101 to the server through the device 102, the generation period (or generation period) of the pose (pose) information is 4 milliseconds (ms), the transmission period of the pose information is 12ms, and a CB includes 3 pose information for example. As shown in fig. 4, one pose information is generated at 0ms, 4ms, 8ms, 12ms, 16ms, 20ms, 24ms, 28ms, and 32ms, respectively. The device 101 may send pose information generated at 0ms, 4ms, and 8ms to the device 102 at 8ms, pose information generated at 12ms, 16ms, and 20ms to the device 102 at 20ms, and pose information generated at 24ms, 28ms, and 32ms to the device 102 at 32 ms. In this case, if the pose information generated in the 4ms is wrong in the transmission process, the pose information generated in the 0ms and the 8ms needs to be retransmitted, so that the transmission delay of the pose information is increased, and the user experience is poor. This is not allowed for services like XR services, which have low latency and high rate requirements.

In order to solve the above problems, embodiments of the present application provide a data transmission method. The method comprises the following steps: the first device obtains a first TB and sends the first TB to the second device. Wherein the first TB includes at least one first CB. The first CB includes first data. The size of the first CB is equal to the first value. The first value is derived from the size of the first data, the first value being greater than or equal to the size of the first data and less than or equal to the second value. The second value is predefined and the second value is a positive integer. By controlling the size of the first CB, the method reduces the transmission delay of data and improves the user experience. This method will be described in detail in the embodiment shown in fig. 6 below.

The communication system 10 shown in fig. 1A is merely used as an example, and is not intended to limit the technical solution of the present application. Those skilled in the art will appreciate that in particular implementations, communication system 10 may include other devices, and that the number of devices may be determined according to particular needs without limitation.

Alternatively, each device in fig. 1A in the embodiment of the present application may also be referred to as a communication apparatus, which may be a general-purpose device or a special-purpose device, which is not specifically limited in the embodiment of the present application.

Alternatively, the related functions of each device in fig. 1A in the embodiment of the present application may be implemented by one device, or may be implemented by a plurality of devices together, or may be implemented by one or more functional modules in one device, which is not specifically limited in the embodiment of the present application. It will be appreciated that the functions described above may be either network elements in a hardware device, or software functions running on dedicated hardware, or a combination of hardware and software, or virtualized functions instantiated on a platform (e.g., a cloud platform).

In a specific implementation, each device shown in fig. 1A may adopt the constituent structure shown in fig. 5, or include the components shown in fig. 5. Fig. 5 is a schematic diagram of a hardware configuration of a communication device applicable to an embodiment of the present application. The communication device 50 comprises at least one processor 501 and at least one communication interface 504 for implementing the methods provided by the embodiments of the present application. The communication device 50 may also include a communication line 502 and a memory 503.

The processor 501 may be a general purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the programs of the present application.

Communication line 502 may include a pathway to transfer information between the aforementioned components, such as a bus.

A communication interface 504 for communicating with other devices or communication networks. The communication interface 504 may be any transceiver-like device such as an ethernet interface, a radio access network (radio access network, RAN) interface, a wireless local area network (wireless local area networks, WLAN) interface, a transceiver, pins, buses, or transceiver circuitry, etc.

The memory 503 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be self-contained and coupled to the processor 501 via communication line 502. Memory 503 may also be integrated with processor 501. The memory provided by embodiments of the present application may generally have non-volatility.

The memory 503 is used for storing computer-executable instructions related to executing the schemes provided in the embodiments of the present application, and is controlled by the processor 501 to execute the instructions. The processor 501 is configured to execute computer-executable instructions stored in the memory 503, thereby implementing the methods provided in the embodiments of the present application. Alternatively, in the embodiment of the present application, the processor 501 may perform functions related to processing in a method provided in the embodiment of the present application, where the communication interface 504 is responsible for communicating with other devices or communication networks, and the embodiment of the present application is not limited in detail.

Alternatively, the computer-executable instructions in the embodiments of the present application may be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules.

As one example, processor 501 may include one or more CPUs, such as CPU0 and CPU1 in fig. 5.

As one example, communication device 50 may include multiple processors, such as processor 501 and processor 507 in fig. 5. Each of these processors may be a single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

As an embodiment, the communication apparatus 50 may further comprise an output device 505 and/or an input device 506. An output device 505 is coupled to the processor 501 and may display information in a variety of ways. For example, the output device 505 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a Cathode Ray Tube (CRT) display device, or a projector (projector), or the like. The input device 506 is coupled to the processor 501 and can receive user input in a variety of ways. For example, the input device 506 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.

It will be appreciated that the constituent structures shown in fig. 5 do not constitute limitations of the communication device, and that the communication device may include more or less components than those shown in fig. 5, or may combine some components, or may be arranged in different components.

The communication method provided in the embodiment of the present application will be described below with reference to the accompanying drawings. Each device in the following embodiments may be provided with the components shown in fig. 5, and will not be described in detail.

It should be noted that, in the embodiments of the present application, transmission may be understood as transmission and/or reception according to a specific context. The transmission may be a noun or a verb. Transmission is often used instead of transmission and/or reception when de-emphasizing the execution subject of the action. For example, the phrase transmitting data may be understood as transmitting data from the perspective of the transmitting end and receiving data from the perspective of the receiving end.

It should be noted that, in the embodiments described below, the names of the messages between the devices or the names of the parameters in the messages are only an example, and may be other names in specific implementations, which are not limited in particular in the embodiments of the present application.

It should be noted that, in the embodiment of the present application, "/" may indicate that the related objects are in an "or" relationship, for example, a/B may indicate a or B; "and/or" may be used to describe that there are three relationships associated with an object, e.g., a and/or B, which may represent: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. Furthermore, expressions similar to "at least one of A, B and C" or "at least one of A, B or C" are generally used to denote any one of the following: a alone; b alone; c alone; both A and B are present; both A and C are present; b and C are present simultaneously; a, B and C are both present. The above is an alternative entry for the item exemplified by A, B and C together with three elements, the meaning of which can be obtained according to the rules described above when there are more elements in the expression.

In order to facilitate description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. may be used to distinguish between technical features that are the same or similar in function. The terms "first," "second," and the like do not necessarily denote any order of quantity or order of execution, nor do the terms "first," "second," and the like. In this application embodiment, the terms "exemplary" or "such as" and the like are used to denote examples, illustrations, or descriptions, and any embodiment or design described as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. The use of the word "exemplary" or "such as" is intended to present the relevant concepts in a concrete fashion to facilitate understanding.

It is appreciated that reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, various embodiments are not necessarily referring to the same embodiments throughout the specification. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence number of each process does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It is to be understood that in this application, the terms "when …," "if," and "if" are used to indicate that the corresponding process is to be performed under some objective condition, and are not intended to limit the time, nor do they require that the acts be performed with a judgment, nor are they intended to imply that other limitations are present.

It can be appreciated that some optional features of the embodiments of the present application may be implemented independently in some scenarios, independent of other features, such as the scheme on which they are currently based, to solve corresponding technical problems, achieve corresponding effects, or may be combined with other features according to requirements in some scenarios. Accordingly, the apparatus provided in the embodiments of the present application may also implement these features or functions accordingly, which is not described herein.

It will be appreciated that the same steps or technical features having the same function in the embodiments of the present application may be referred to and referred to by each other in different embodiments.

It is to be understood that in the embodiments of the present application, the first device and/or the second device may perform some or all of the steps in the embodiments of the present application, these steps are merely examples, and the embodiments of the present application may also perform other steps or variations of the various steps. Furthermore, the various steps may be performed in a different order presented in embodiments of the present application, and it is possible that not all of the steps in embodiments of the present application may be performed.

As shown in fig. 6, a data transmission method provided in the embodiment of the present application may be applied to the above scenario 1 or scenario 2. The data transmission method may include S601 to S604.

S601: the first device obtains a first TB.

Wherein the first device may be device 101 in communication system 10 shown in fig. 1A. The first TB may include at least one first CB, and the first CB may include first data. Taking XR traffic as an example, the first data may comprise at least one pose information. The pose information may be generated at any one time. The pose information may be used to indicate a position and/or pose of the user.

Illustratively, taking fig. 4 as an example, the first data includes pose information generated at 0ms, or the first data includes pose information generated at 0ms and 4 ms. For another example, if the first TB includes two first CBs, the first CB may include pose information generated by 0ms and 4ms, and the second first CB may include pose information generated by 8ms and 12 ms.

In one possible implementation, the first CB is equal in size to the first value. Wherein the first value is obtained according to the size of the first data. For example, the first value is an integer multiple of the size of the first data. Therefore, the size of the first CB can be adjusted according to the size of the first data, and a proper CB is obtained, so that the first CB comprises the first data, redundant bits except the first data are not included in the first CB, and the resource utilization rate is improved. For another example, the first value is a sum of an integer multiple of the size of the first data and n bits. n bits are reserved bits.

Alternatively, the first value is determined by the first device and indicated to the second device, as will be explained in S605. Alternatively, the first data is determined by the second device and indicated to the first device, as will be explained in S606. Wherein the second device may be device 102 in communication system 10 shown in fig. 1A. It should be appreciated that the first value may also be predefined or preconfigured, without limitation.

One possible implementation, the first value is greater than or equal to the size of the first data and less than or equal to the second value. Wherein the second value is predefined or preconfigured and the second value is a positive integer. Illustratively, the second value is the size of the CB defined in the protocol. For example, the second value is 3840 bits or 8448 bits defined in the 5G NR protocol. It will be appreciated that if the protocol modifies the size of the CB again, the second value may be the modified size of the CB.

It can be appreciated that if the size of the first CB is smaller than the second value, the number of data included in the first CB may be smaller than the number of data included in the CB defined in the protocol. In this case, compared with the CB defined in the protocol, if any one of the data in the first CB is in error in the transmission process, and the data in the first CB is retransmitted, the influence on other first data can be reduced, or unnecessary data retransmission is reduced, the time delay of data transmission can be reduced, and the user experience is improved.

For example, if one CB includes data 1, data 2, and data 3, where data 2 is erroneous in transmission, the first device needs to retransmit data 1, data 2, and data 3. If one CB includes data 1 and data 2, where the data 2 is in error in transmission, the first device needs to retransmit the data 1 and the data 2, and does not need to retransmit the data 3, or does not affect the transmission of the data 3, so that the data 3 can be transmitted to the receiving end as soon as possible, and further the receiving end can process the received data first, so that the time delay of data transmission can be reduced, and the user experience is improved.

Optionally, the first TB further comprises at least one second CB. The second CB includes the second data. The second data has a different latency requirement than the first data, e.g., the second data has a latency requirement that is lower than the latency requirement of the first data. Taking XR service as an example, the second data comprises audio information and/or video information. Wherein the audio information comprises at least one piece of audio. The video information includes at least one video or at least one picture.

In one possible implementation, the second CB is equal in size to the second value. That is, for the second data, the first device may employ CB transmission defined in the protocol to reduce the number of segmented CBs.

It will be appreciated that, in the description corresponding to fig. 2, the process of the first device obtaining the first TB may refer to the process of processing the data 1 by the device 101 to obtain the TB. The difference is that:

(1) In S601, the RLC layer of the first device does not segment the data packet.

In S601, after receiving the RLC SDU submitted by the PDCP layer, the RLC layer of the first device does not segment the RLC SDU, but adds an RCL packet header to the RLC SDU to obtain an RLC PDU, and submits the RLC PDU to the MAC layer of the first device through the LCH.

If the RLC layer of the transmitting apparatus does not perform segmentation of the data packet, the RLC layer of the receiving apparatus does not perform merging of the data packet. That is, in the method shown in fig. 6, after the second device receives the first TB, the RLC layer of the second device does not perform packet merging.

(2) In S601, the PHY layer of the first device is different in the segmentation manner of the CB.

For example, if the first device needs to send the first data, the first device performs CB segmentation on the bit sequence of the MAC layer according to the first value, so that the first TB includes at least one first CB, and the size of the first CB is the first value. The following description will take an example in which the first TB includes 3 first CBs. As shown in fig. 7A, after receiving a bit sequence of the MAC layer submitted by the MAC layer of the first device, the PHY layer in the first device adds a CRC to the bit sequence, and performs segmentation processing to obtain 3 first CBs. And adding CRC (cyclic redundancy check) for each first CB by the PHY layer, and performing LDPC (low density parity check) coding on each first CB to obtain a first TB.

For example, if the first device needs to send the first data and the second data, the first device segments the bit sequence of the MAC layer according to the first value and the second value, so that the first TB includes at least one first CB and at least one second CB, where the first CB has a first value and the second CB has a second value. The following description will take an example in which the first TB includes 2 first CBs and 2 second CBs. As shown in fig. 7B, after receiving a bit sequence of the MAC layer submitted by the MAC layer of the first device, the PHY layer in the first device adds a CRC to the bit sequence, and performs segmentation processing to obtain 2 first CBs and 2 second CBs. And then, the PHY layer adds CRC for each first CB, adds CRC for each second CB, and carries out LDPC coding on each first CB and each second CB respectively to obtain the first TB.

It should be noted that, for the above example, the CB (e.g., the first CB and/or the second CB) included in the first TB may be a CB obtained by adding a CRC to a bit sequence of the MAC layer and performing segmentation processing, that is, the CB included in the first TB may be a CB to which no CRC is added and which is not subjected to channel coding. Alternatively, the CB included in the first TB may be a CB obtained by adding a CRC to a bit sequence of the MAC layer, performing segmentation processing, and adding a CRC to the CB after segmentation processing and performing channel coding.

One possible design is that if the size of the first data transmitted through the first TB is not an integer multiple of the size of the first CB, the first TB further includes a third CB including a smaller amount of the first data than the first CB, that is, the size of the third CB is smaller than the first value. For example, if the first device transmits 500 bits of first data to the second device and the size (i.e., the first value) of the first CB is 200 bits, the first TB includes 2 first CBs and 1 third CB. Wherein the size of the third CB is 100 bits and is smaller than the first value.

One possible design is that if the size of the first data transmitted through the first TB is an integer multiple of the size of the first CB, the size of the second data transmitted through the first TB is not an integer multiple of the size of the second CB, the first TB further includes a fourth CB including a smaller amount of the second data than the second CB, that is, the size of the fourth CB is smaller than the second value. For example, if the first device transmits 400 bits of first data and 800 bits of second data to the second device, the size of the first CB (i.e., the first value) is 200 bits, and the size of the second CB (i.e., the second value) is 300 bits, the first TB includes 2 first CBs, 2 second CBs, and 1 fourth CB. Wherein the first TB has a size of 1200 bits, and the fourth CB has a size of 200 bits, which is smaller than the second value.

One possible design is that the first TB further includes a third CB and a fourth CB if the size of the first data transmitted through the first TB is not an integer multiple of the size of the first CB and the size of the second data transmitted through the first TB is not an integer multiple of the size of the second CB. For example, if the first device transmits 500 bits of first data and 800 bits of second data to the second device, the size of the first CB (i.e., the first value) is 200 bits, and the size of the second CB (i.e., the second value) is 300 bits, the first TB includes 2 first CBs, 2 second CBs, 1 third CB, and 1 fourth CB. The first TB is 1300 bits in size, the third CB is 100 bits in size and smaller than the first value, and the fourth CB is 200 bits in size and smaller than the second value.

In one possible implementation, the first data is data of a first logical channel, and the second data is data of a second logical channel. That is, a first logical channel may be used to transmit first data and a second logical channel may be used to transmit second data. In this manner, the first data and the second data may be transmitted in different manners by configuring different parameters (e.g., a size of the first CB, and/or a size of the second CB, and/or the number of first CBs included in one TB, and/or the number of second CBs included in one TB, etc.) for the first logical channel and the second logical channel.

Optionally, before S601, the second device configures a first logical channel for the first device, and configures a process number for the first logical channel. For example, the second device may configure a process number for the first logical channel through allowedCG-List-r16 signaling in logical channel configuration (logicalChannelConfig). Similarly, before S601, the second device configures a second logical channel for the first device, and configures a process number for the second logical channel. For example, the second device may configure a process number for the second logical channel through allowedCG-List-r16 signaling in logicalChannelConfig.

The process number may be a semi-statically scheduled process number. The semi-static schedule is an unlicensed schedule. The unlicensed schedule may also be referred to as a configuration-exempt licensed schedule. The resources of the semi-persistent scheduling indication may be used to transmit the first TB. The process number configured by the second device for the first logical channel may be the same or different from the process number configured by the second device for the second logical channel.

S602: the first device transmits a first TB to the second device. Accordingly, the second device receives the first TB from the first device.

In one possible implementation, if the first TB includes at least one first CB, the at least one first CB is carried on a resource indicated by semi-persistent scheduling (hereinafter referred to as a semi-persistent scheduling resource).

In another possible implementation, if the first TB includes at least one first CB and at least one second CB, the at least one first CB is carried on the first resource and the at least one second CB is carried on the second resource. The first resource and the second resource are semi-static scheduling resources. That is, after the network device or the second device configures the semi-persistent scheduling resource for the first device through the semi-persistent scheduling, the first device may transmit the first TB through the semi-persistent scheduling resource. Specifically, the first device may obtain, according to the first value, the number of first CBs, and the MCS configuration of the semi-static scheduling, the total number of RBs or subcarriers required for transmitting the first CBs, and may obtain, according to the semi-static scheduling resource and the total number of RBs or subcarriers required for transmitting the first CBs, scheduling resources (i.e., first resources) carrying the first CBs and scheduling resources (i.e., second resources) carrying the second CBs, respectively. Subsequently, the first device may map data of the first CB onto the first resource and map data of the second CB onto the second resource. The number of the first CBs may be preconfigured, or determined by the first device, and after the first device determines the number of the first CBs, the number of the first CBs may be indicated to the second device (for example, the first device indicates the number of the first CBs to the second device in S605 described below), or the second device determines and indicates the number of the first CBs to the first device (for example, the second device indicates the number of the first CBs to the first device in S606 described below).

For example, if the network device or the second device configures the semi-persistent scheduling resource for the first device by the semi-persistent scheduling, the semi-persistent scheduling resource includes 1 slot (including 14 symbols) and n+1 subcarriers, that is, (n+1)/12 resource blocks (RBs or (n+1) Resource Elements (REs), and the number of REs required for the first CB by the first device according to the first value, the number of the first CBs, and the MCS configuration of the semi-persistent transmission is n+10, in the semi-persistent scheduling resource, subcarriers 0 to N of symbol 0 and subcarriers 0 to 8 of symbol 1 are used to carry the first CB, subcarriers 9 to N of symbol 1 and subcarriers 0 to N of each symbol of symbol 2 to symbol 13 are used to carry the second CB., that is, the first resource includes subcarriers 0 to N of symbol 0 and subcarriers 0 to 8 of symbol 1, and the second resource includes subcarriers 0 to N of symbol 1 to symbol 2 and subcarriers 0 to 13 of each symbol 1.

It is understood that the first resource may comprise resources that are not continuous in the time or frequency domain, but rather discrete. Similarly, the resources included in the second resource may not be continuous in the time domain or the frequency domain, but may be discrete.

S603: the second device decodes the first TB.

In one possible implementation manner, if the first TB includes at least one first CB, the PHY layer of the second device segments the first TB according to the first value to obtain at least one first CB, then decodes the at least one first CB, and checks or detects the CRC of the decoded first CB and the CRC of the decoded first TB. It will be appreciated that, as described above, the first device may perform channel coding before transmitting the first TB, so that the decoding of the at least one first CB by the second device is for the decoding of the channel coding. In this embodiment of the present application, the decoding may be decoding for channel coding, which is described in detail herein, and will not be described in detail later.

It can be appreciated that if the first TB includes at least one first CB and at least one second CB, the second device obtains the scheduled resource (i.e. the first resource) carrying the first CB and the scheduled resource (i.e. the second resource) carrying the second CB according to the first value, the number of the first CBs and the MCS configuration of the semi-static schedule, so as to determine which resources transmit the first CB and which resources transmit the second CB, thereby obtaining the first CB and the second CB.

Illustratively, when the second device configures the scheduling resource for the first device through semi-static scheduling, the second device performs scheduling according to the sequence of the first time domain and the second frequency domain. The second device may obtain the number of RBs or subcarriers required for transmitting the first CB according to the first value, the number of CBs, and the MCS configuration of the semi-persistent scheduling, and determine, according to a rule of a first time domain and a second frequency domain, a semi-persistent scheduling symbol and subcarrier where the first CB is located, and a semi-persistent scheduling symbol and subcarrier where the second CB is located. For example, if the second device or the network device configures the semi-persistent scheduling resource for the first device by the semi-persistent scheduling includes 1 slot (including 14 symbols) and n+1 subcarriers, i.e., (n+1)/12 RBs, and the number of REs required for the first CB obtained by the second device according to the first value, the number of first code blocks, and the MCS configuration is n+10, in the semi-persistent scheduling resource, subcarriers 0 to N of symbol 0 and subcarriers 0 to 8 of symbol 1 are used to carry at least one first CB, and subcarriers 9 to N of symbol 1 and subcarriers 0 to N of each symbol of symbols 2 to 13 are used to carry at least one second CB. In this way, the second device may obtain at least one first CB and at least one second CB.

It may be appreciated that, after the second device obtains at least one first CB and at least one second CB, the PHY layer of the second device may determine the size of the first CB according to the first value, determine the size of the second CB according to the second value, decode the at least one first CB and the at least one second CB, respectively, and check or detect the CRC of the decoded first CB, the CRC of the decoded second CB, and the CRC of the decoded first TB.

S604: the second device uploads the data in the CB with correct CRC in the first TB to the higher layer of the second device.

In one possible implementation manner, the PHY layer of the second device submits the CB with the correct CRC (e.g., the first CB with the correct CRC and/or the second CB with the correct CRC) to the MAC layer of the second device, and after the MAC layer receives the CB with the correct CRC, the MAC layer of the device 102 submits the packet to the PDCP layer of the second device in the manner that the MAC layer of the device 102 submits the packet to the PDCP layer of the device 102 via the RLC layer of the device 102 in the description corresponding to fig. 2. It should be noted that the PDCP layer of the second device may turn off the ordering function of the PDCP layer. That is, after receiving the PDCP PDU submitted by the RLC layer, the PDCP layer may deliver the data in the data packets to a higher layer in the ordered order without ordering the data packets according to SN. For example, even if the PDCP layer detects an out-of-order packet, the PDCP layer may deliver data in the received packet to a higher layer. Subsequently, after the data packet with the sequence being disconnected is successfully received, the PDCP layer delivers the data in the data packet with the sequence being disconnected to a higher layer. Therefore, the transmission delay of the data can be reduced, so that the higher layer can firstly process the received data and respond to the first device, and the user experience is improved.

Further, the PDCP layer of the second device may close the ordering function of the PDCP layer for the first data and not close the ordering function of the PDCP layer for the second data. In this way, the first data can be transferred to the higher layer of the second device as soon as possible.

Optionally, after S604, the higher layer of the second device sends the received data to the server for processing and transmission by the server.

Based on the method shown in fig. 6, a first device may acquire a first TB and transmit the first TB to a second device. The size of the first CB in the first TB is a first value, and the first value is obtained according to the size of the first data, so that the size of the first CB can be adjusted according to the size of the first data, and a suitable size of the CB is obtained. In addition, when the first value is greater than or equal to the size of the first data and less than the second value, the number of data included in the first CB may be made smaller than the number of data included in the CB having the size of the second value. In this case, compared with the CB with the second value, if any one of the first CBs is wrong in the transmission process, and the data in the first CB is retransmitted, the influence on other first data can be reduced, or unnecessary data retransmission is reduced, the time delay of data transmission can be reduced, and the user experience is improved. In addition, after the second device receives the first TB, the second device may upload the data in the CB with correct CRC check in the first TB to a higher layer of the second device. Therefore, the transmission delay of the data can be further reduced, so that the higher layer can firstly process the received data and respond to the first device, and the user experience is improved.

Alternatively, in one possible implementation of the method shown in fig. 6, the first device may determine the first value and indicate the first value to the second device. Thus, the first device may segment CBs according to the first value, and add CRCs and perform channel coding to the segmented CBs, respectively, and the second device may determine the size of CBs of the received data according to the first value, and perform channel decoding and CRC decoding on the CBs, respectively. The method shown in fig. 6 may further include S605:

s605: the first device sends first information to the second device. Accordingly, the second device receives the first information from the first device.

Wherein the first information is used to indicate a first value. For example, the first information includes a first value. For another example, the first device and the second device have stored therein a plurality of first values and an identification of each first value, in which case the first information includes the identification of the first value. Thus, after the second device receives the first information, the first value may be determined according to the identification of the first value.

Optionally, the first information is further used to indicate at least one of: the number of semi-statically scheduled process number or first CB. For example, the first information includes a semi-statically scheduled process number and/or a number of first CBs.

It may be appreciated that, if the first TB includes at least one first CB, the first information includes a process number of the semi-static schedule configured by the second device for the first logical channel. If the first TB includes at least one first CB and at least one second CB, the semi-static scheduling process number included in the first information is a process number configured by the second device for the first logical channel, or the semi-static scheduling process number included in the first information is a process number configured by the second device for the first logical channel and a process number configured by the second device for the second logical channel. The description of the first logical channel and the second logical channel may refer to the description in S601, which is not described herein.

It may be appreciated that, if the first information indicates a process number configured by the second device for the first logical channel, the second device may determine a size of a CB corresponding to the process number as the first value, so that the second device determines the size of the CB of the received data according to the first value, and decodes and CRC detects the CBs respectively. Similarly, if the first information indicates the process number configured by the second device for the second logical channel, the second device may determine that the size of the CB corresponding to the process number is the second value, so that the second device determines the size of the CB of the received data according to the second value, and decodes and CRC detects the CBs respectively.

It may be appreciated that if the first information indicates the number of first CBs, the second device may determine, according to the semi-persistent scheduling resource, the first value, and the number of first CBs, a symbol and a subcarrier respectively occupied by the first CB and the second CB in the first TB. Specifically, the second device may determine, according to the first value, the number of first CBs, and the MCS configuration of the semi-static scheduling, the number of symbols occupied by the first CBs in the first TB, the number of subcarriers corresponding to each symbol in the symbols occupied by the first CBs, the number of symbols occupied by the second CBs in the first TB, the number of subcarriers corresponding to each symbol in the symbols occupied by the second CBs, and further determine, according to the semi-static scheduling resources, the symbols and subcarriers occupied by the first code block, and the symbols and subcarriers occupied by the second code block. In this manner, the second device may determine which of the received CBs are the first CBs and which are the second CBs.

It can be appreciated that the number of subcarriers corresponding to each symbol in the symbols occupied by the first CB may be the same or different. The number of subcarriers corresponding to each symbol in the symbols occupied by the second CB may be the same or different. The number of subcarriers corresponding to the symbols occupied by the first CB may be the same or different from the number of subcarriers corresponding to the symbols occupied by the second CB.

For example, if the semi-persistent scheduling resource includes 1 slot (including 14 symbols) and n+1 subcarriers, the second device determines, according to the first value and the number of the first CBs, that the number of symbols occupied by the first CBs in the first TB is 2, where the number of subcarriers corresponding to one symbol is n+1, the number of subcarriers corresponding to another symbol is N-10, the number of symbols corresponding to the second CBs in the first TB is 13, the number of subcarriers corresponding to one symbol is 10, and the number of subcarriers corresponding to the remaining symbols is n+1, and the allocation manner of the first resources (i.e., resources carrying the first CBs) and the second resources (i.e., resources carrying the second CBs) may be as shown in fig. 8. In fig. 8, subcarriers 0 to N of symbol 0 and subcarriers 0 to N-10 of symbol 1 are used to carry at least one first CB, subcarriers N-9 to N of symbol 1 and subcarriers 0 to N of each of symbols 1 to 13 are used to carry at least one second CB. That is, for fig. 8, the first resources include subcarriers 0 through N of symbol 0 and subcarriers 0 through N-10 of symbol 1, and the second resources include subcarriers N-9 through N of symbol 1 and subcarriers 0 through N of each of symbols 1 through 13.

It will be appreciated that the allocation of resources shown in fig. 8 is merely exemplary, and that other allocations are possible in a particular application. For example, the first resource is located not in the beginning symbol of the semi-persistent scheduling resource in the time domain, but in the middle symbol of the semi-persistent scheduling resource (e.g., symbol 6 and symbol 7), or in the ending symbol of the semi-persistent scheduling resource (e.g., symbol 13), etc. If the first resource is located in the middle symbol of the semi-persistent scheduling resource, the second resource may be located in the start symbol and/or the end symbol of the semi-persistent scheduling resource. If the first resource is located at the end symbol of the semi-persistent scheduling resource, the second resource may be located at the start symbol and/or the intermediate symbol of the semi-persistent scheduling resource.

It may be appreciated that the first device may also determine, according to the semi-static scheduling resource, the first value, and the number of first CBs, a symbol and a subcarrier respectively occupied by the first CB and the second CB in the first TB. Thus, the first device may send the first CB on the symbol and subcarrier occupied by the first CB and send the second CB on the symbol and subcarrier occupied by the second CB. The process of determining, by the first device, the symbol and the subcarrier occupied by the first CB and the second CB in the first TB is similar to the process of determining, by the second device, the symbol and the subcarrier occupied by the first CB and the second CB in the first TB, and therefore, the description of determining, by the second device, the symbol and the subcarrier occupied by the first CB and the second CB in the first TB may be referred to, and will not be repeated herein.

Optionally, the first information is user assistance information (UE assistance information, UAI).

As an example, the UAI may be as follows:

wherein CGcodeBlockSize-r18 may indicate a first value. In one possible implementation, the first value may be selected from a preconfigured value, for example from 100, 200, 400 and 800, in bits. The configurable GrantConfigIndex may indicate a semi-statically scheduled process number. In one possible implementation, the second device may configure the first device with a plurality of semi-statically scheduled process numbers, and the first device indicates a specific process number to the second device through a configurable grantconfigindex.

As another example, the UAI may be as follows:

the CGcodeBlockSize-r18 and ConfigurededGrantConfigIndex are described above, and are not described in detail herein. The CGcodeBlockNumber-r18 may be used to indicate the number of first CBs. Thus, the second device may determine the symbols and subcarriers occupied by the first and second CBs in the first TB according to the semi-persistent scheduling resource, CGcodeBlockSize-r18, and CGcodeBlockNumber-r18, respectively.

It will be appreciated that in the above example, only part of the signalling in the UAI is shown. In particular applications, the UAI may include more or less signaling than the examples described above, without limitation.

It may be appreciated that when the transmission opportunity of the semi-persistent scheduling indication occurs, the first device may segment the CB according to the size indicated by CGcodeBlockSize-r18, and add CRC and perform channel coding to the segmented CB, respectively. Accordingly, the second device may determine the sizes of CBs of the received data according to the size indicated by CGcodeBlockSize-r18, and perform channel decoding and CRC decoding on the CBs, respectively.

In one possible implementation, before S605, the first device determines a first value according to a size of the first data. For example, the first value is an integer multiple of the size of the first data. Alternatively, the first device determines the first value according to the size of the first data and the generation period of the first data. For example, the first value is the size of all first data generated during one or more generation periods. It may be appreciated that the first device determining the first value may be performed before S601, so that the first device performs CB segmentation according to the first value, and respectively adds CRC to the segmented CB and performs channel coding. S605 may be executed before S602. Thus, the second device, upon receiving the first TB, may decode based on the first information.

Alternatively, in one possible implementation of the method shown in fig. 6, the second device may determine the first value and indicate the first value to the first device. Thus, the first device may segment CBs according to the first value, and add CRCs and perform channel coding to the segmented CBs, respectively, and the second device may determine the CB size of the received data according to the first value, and perform channel decoding and CRC decoding on the CBs, respectively. The method shown in fig. 6 may further include S606:

s606: the second device sends second information to the first device. Accordingly, the first device receives the second information from the second device.

Wherein the second information is used to indicate the first value. For example, the second information includes a first value. For another example, the first device and the second device have stored therein a plurality of first values and an identification of each first value, in which case the second information includes the identification of the first value. Thus, after the first device receives the second information, the first value may be determined according to the identification of the first value.

Optionally, the second information is further used to indicate at least one of: the number of semi-statically scheduled process number or first CB. For example, the second information includes a semi-statically scheduled process number and/or a number of first CBs.

It may be appreciated that, if the first TB includes at least one first CB, the second information includes a semi-statically scheduled process number configured by the second device for the first logical channel. If the first TB includes at least one first CB and at least one second CB, the semi-static scheduling process number included in the second information is a process number configured by the second device for the first logical channel, or the semi-static scheduling process number included in the second information is a process number configured by the second device for the first logical channel and a process number configured by the second device for the second logical channel. The description of the first logical channel and the second logical channel may refer to the description in S601, which is not described herein.

It may be understood that, if the second information indicates the process number configured by the second device for the first logical channel, the first device may determine that the size of the CB corresponding to the process number is a first value, so that the first device segments the CB according to the first value, and respectively adds CRC and performs channel coding to the segmented CB. Similarly, if the second information indicates the process number configured by the second device for the second logical channel, the first device may determine that the size of the CB corresponding to the process number is a second value, so that the first device segments the CB according to the second value, and adds CRC to the segmented CB and performs channel coding.

It may be appreciated that if the second information indicates the number of first CBs, the first device may determine, according to the semi-persistent scheduling resource, the first value, and the number of first CBs, a symbol and a subcarrier respectively occupied by the first CB and the second CB in the first TB. Specifically, the first device may determine, according to the first value, the number of first CBs, and the MCS configuration of the semi-static scheduling, the number of symbols occupied by the first CBs in the first TB, the number of subcarriers corresponding to each symbol in the symbols occupied by the first CBs, the number of symbols occupied by the second CBs in the first TB, the number of subcarriers corresponding to each symbol in the symbols occupied by the second CBs, and further determine, according to the resources indicated by the semi-static scheduling, the symbols and subcarriers occupied by the first code block, and the symbols and subcarriers occupied by the second code block. In this way, the first device may send at least one first CB on the symbols and subcarriers occupied by the first CB and send at least one second CB on the symbols and subcarriers occupied by the second CB. Similarly, the second device may also determine, according to the semi-static scheduling resource, the first value, and the number of the first CBs, a symbol and a subcarrier respectively occupied by the first CB and the second CB in the first TB. In this manner, the second device may determine which of the received CBs are the first CBs and which are the second CBs.

In one possible implementation, the second information may be configured by configuring an authorized configuration (IE) cell (information element, IE). For example, the second information may be configured as follows ConfiguredGrantConfig IE. Wherein, CGcodeBlocksize-r18 in ConfiguredGrantConfig IE may be used to indicate a first value, CGcodeBlockNumber-r18 may be used to indicate a number of first CBs, and configurable GrantConfigIndex-r16 may be used to indicate a semi-persistent scheduling process number.

It will be appreciated that in the above example, only some of the signalling in ConfiguredGrantConfig IE is shown. In a specific application, UAIConfiguredGrantConfig IE can include more or less signaling than the examples described above, without limitation.

In one possible implementation, the first device may send third information to the second device prior to S606. Wherein the third information may be used to indicate the size of the first data. For example, the third information includes a size of the first data. Optionally, the third information is further used to indicate a generation period of the first data. In this manner, the second device may determine the first value based on the third information. For example, the second device determines the first value based on the size of the first data. Alternatively, the first device determines the first value according to the size of the first data and the generation period of the first data. The specific process of determining the first value by the second device is similar to that in S605, so reference may be made to the corresponding description in S605, and details are not repeated here.

Optionally, the third information is UAI.

As an example, the UAI may be as follows:

wherein CGdataSize-r18-r18 may be used to indicate the size of the first data in bits.

As another example, the UAI may be as follows:

wherein CGdataSize-r18 is used to indicate the size of the first data in bits. The CGdataPeriod-r18 is used to indicate a generation period of the first data in milliseconds.

In this way, after receiving the third information sent by the first device, the second device may configure the first value, that is, the size of the first CB, according to the size of the first data, and transmit the size of the first CB to the first device through the second information, so as to enable transmission of the first CB between the first device and the second device. For example, if the size of the first data is 100 bits, the second device may set the size of the first CB to 100 bits, where the first CB may carry 1 first data, or the second device may set the size of the first CB to 200 bits, where the first CB may carry 2 first data.

In yet another example, the second device may configure the first value, that is, the size of the first CB, according to the size of the first data and the generation period of the first data, and the period of semi-persistent scheduling after receiving the third information transmitted by the first device. For example, when the size of the first data is 100 bits and the size of the first CB is 400 bits, each first CB may carry 4 first data, and 4 first CBs may be transmitted each time the semi-persistent scheduling opportunity (4 first CBs may include 16 first data). In this case, the channel coding gain can be improved by combining a plurality of first data into one first CB for transmission, and at the same time, the error of any one of the 4 first CBs only causes the error of the 4 first data in the first CB, and the transmission delay of the first data is reduced without affecting the transmission of 12 first data in the other 3 first CBs.

It is understood that S606 is performed before S601. Thus, the first device can segment the CB according to the second information, and add CRC and perform channel coding to the segmented CB. The second device may determine the CB size of the received data when receiving the first TB according to the first value, and perform channel decoding and CRC decoding on the CBs, respectively.

It is understood that S605 and S606 are parallel steps, and one of them may be selected for execution when executing the method provided in the embodiment of the present application.

Alternatively, in one possible implementation of the method shown in fig. 6, if the second device checks the first TB for errors, the second device may schedule the first device to retransmit. In this way, the second device may be caused to receive the correct first TB. Illustratively, the method shown in FIG. 6 further includes S607-S609.

S607: and if the first TB is checked for errors, the second device sends fourth information to the first device. Accordingly, the first device receives fourth information from the second device.

The first TB checking error may be understood as decoding an error on any CB (e.g., the first CB or the second CB) in the first TB, or decoding all CBs in the first TB correctly, but decoding the first TB in error. The decoding error of CB may be referred to as a CRC error for CB, and the decoding of CB may be referred to as a CRC error for CB. Decoding errors for the first TB may also be referred to as CRC detection errors for the first TB.

In one possible design, the fourth information may be used to schedule the second TB. The second TB may include the same or different redundancy versions as CBs in the first TB.

It should be noted that, if the second device decodes each of the first CBs in the first TB correctly, but decodes the first TB in error, the second device may schedule the first device to retransmit the entire first TB, that is, the CBs included in the second TB are the same as the CBs included in the first TB. If the second device decodes any one of the first CBs in the first TB, the second device may schedule the first device to retransmit the CB that the second device failed to decode the first TB, i.e., the CB included in the second TB is the CB that the second device failed to decode the first TB, or the second device may schedule the first device to retransmit the entire first TB. Wherein the CB included in the second TB is the same as the CB included in the first TB may be understood as: the CB included in the second TB is the CB included in the first TB, or the CB included in the second TB is obtained by recoding the data in the first TB using the same coding scheme as the first TB, or the CB included in the second TB is a different redundancy version coded using the same coding scheme as the first TB. It is understood that the second TB may include one CB. In this case, the one CB constitutes the second TB.

In one possible implementation, the fourth information may include the first field. The first field may be used to indicate a CB in the first TB included in the second TB. Alternatively, the first field may be used to indicate a CB in the first TB that needs to be retransmitted. Specifically, if the first TB includes at least one first CB, the first field may be used to indicate the first CB in the first TB included in the second TB, or the first field may be used to indicate the first CB in the first TB that needs to be retransmitted. If the first TB further includes at least one second CB, the first field may also be used to indicate the second CB in the first TB included in the second TB, or the first field may also be used to indicate the second CB in the first TB that needs to be retransmitted, or the first field may also be used to indicate whether the second TB includes the second CB.

It will be appreciated that the above "indication" may be explicitly and/or implicitly indicated. For example, the implicit indication may be indicated based on a location and/or a resource used for the transmission; the explicit indication may be indicated based on one or more parameters, and/or one or more indices, and/or one or more bits. The following description is given by taking explicit indications as examples.

In one possible design, if the first TB includes at least one first CB, the first field may include X bits, each bit corresponding to one first CB, for indicating whether the first CB is included in the second TB or whether the first CB needs retransmission. In this case, the first TB includes the first CBs in the number of less than or equal to X. X is a positive integer.

For example, taking X equal to 5 as an example, if the first TB includes 5 first CBs, the second device fails to decode the 3 rd first CB in the first TB, the first field may be "00100". In this case, the second TB includes CBs that are 3 rd first CBs among the first TBs. If the first TB includes 3 first CBs, the second device fails to decode the 2 nd first CB in the first TB, the first field may be "01000", in which case the first 3 bits of the first field are valid, and the first device may ignore the last two bits of the first field after receiving the fourth information. The second TB includes CBs that are the 2 nd first CBs among the first TBs.

In another possible design, if the first TB includes at least one first CB and at least one second CB, the first field may include Y bits, each bit corresponding to one of the first CBs or one of the second CBs. The bit corresponding to the first CB may be used to indicate whether the first CB is included in the second TB or whether the first CB needs retransmission. The bit corresponding to the second CB may be used to indicate whether the second CB is included in the second TB or whether the second CB needs retransmission. In this case, the first TB includes a sum of the number of first CBs and the number of second CBs less than or equal to Y. Y is a positive integer.

For example, taking the example that the first TB includes 3 first CBs and 2 second CBs, Y equals 5, if the second device fails to decode the 3 rd first CB in the first TB, the first field may be "00100". In this case, the second TB includes CBs that are 3 rd first CBs among the first TBs. The first field may be "01010" if the second device fails to decode the 2 nd and 1 st first CBs in the first TB. In this case, the second TB includes CBs of the 2 nd first CB and the 1 st second CB among the first TBs.

In yet another possible design, the first field may include Z bits if the first TB includes at least one first CB and at least one second CB. Among the Z bits, there is one bit for indicating whether the second TB includes all the second CBs, and each of the remaining bits corresponds to one first CB for indicating whether the first CB is included in the second TB or whether the first CB needs retransmission. In this case, the first TB includes the number of first CBs that is less than or equal to Z-1.Z is a positive integer greater than 1.

Illustratively, taking the example that the first TB includes 4 first CBs and 2 second CBs, Z equals 5, the first field may be "00100" if the second device fails to decode the 3 rd first CB in the first TB. In this case, the second TB includes CBs that are 3 rd first CBs among the first TBs. The first field may be "01001" if the second device fails to decode the 2 nd and 1 st first CBs in the first TB. In this case, the second TB includes CBs of the 2 nd first CBs and all the second CBs among the first TBs. The first field may be "01001" if the second device fails to decode the 2 nd first CB, the 1 st second CB, and the 2 nd second CB in the first TB. In this case, the second TB includes CBs of the 2 nd first CBs and all the second CBs among the first TBs.

One possible implementation, the fourth information is DCI or SCI. The first field may be an MCS field. In this case, the MCS field is not used to indicate the MCS, or, in other words, the present embodiment redefines the meaning of the MCS field in the DCI or SCI. Wherein the DCI may be DCI scrambled by an authorized scheduling-radio network temporary identity (configured scheduling-radio network temporary identifier, CS-RNTI).

As an example, for scenario 1 above, the fourth information is DCI, and for scenario 2 above, the fourth information is SCI.

In one possible implementation, if the fourth information is DCI, the first device determines whether the DCI is a DCI scrambled by the CS-RNTI after receiving the DCI. If the DCI is a DCI scrambled by a CS-RNTI and a new transmission indicator (new data indicator, NDI) field in the DCI has a value of "1", the first device determines that the DCI is for scheduling data retransmission, and an MCS field in the DCI is not used to indicate an MCS but is used to indicate a CB in a first TB included in the second TB. The DCI may also indicate a hybrid automatic repeat request (hybrid automatic repeat request, HARQ) process number, which is a HARQ process number corresponding to data that needs to be retransmitted. In this embodiment of the present application, the HARQ process number indicated by the DCI is an HARQ process number corresponding to the first TB. The HARQ process number corresponding to the first TB may be preconfigured.

S608: the first device sends a second TB to the second device according to the fourth information. Accordingly, the second device receives the second TB from the first device.

As an example, if the first field indicates that the second TB includes a first CB of the first TBs, or the first field indicates that the first CB of the first TBs needs to be retransmitted, the first device transmits the second TB to the second device, the second TB including the first CB of the first TBs. If the first field indicates that the second TB includes a first CB and a second CB in the first TB, or the first field indicates that the first CB and the second CB in the first TB need to be retransmitted, the first device sends the second TB to the second device, where the second TB includes the first CB and the second CB in the first TB. If the first field indicates that all CBs in the first TB are included in the second TB, or the first field indicates that all CBs in the first TB need to be retransmitted, the first device sends the second TB to the second device, where the CBs included in the second TB are the same as the CBs included in the first TB.

S609: the second device decodes the second TB.

It will be appreciated that the process of decoding the second TB by the second device is similar to the process of decoding the first TB by the second device, and thus reference may be made to the corresponding description in S603 above.

The above S607 describes: if the second device decodes each of the first CBs correctly, but decodes the first TB in error, the second device may schedule the first device to retransmit the entire first TB. If the second device decodes any one of the first CBs in the first TB, the second device may schedule the first device to retransmit the CB that the second device failed to decode the first TB, or the second device may schedule the first device to retransmit the entire first TB. That is, the second TB may include a CB in which the second device decodes the first TB correctly (a CB in which the second device decodes the first TB correctly in S603) in addition to a CB in which the second device fails to decode the first TB (a CB in which the second device decodes the first TB in S603). In this case, if the second device decodes the second TB correctly, the second device may discard the CB decoded correctly in S603, and upload the CB decoded failed in S603 to a higher layer of the second device, so as to avoid repeating the uploading. The second device may also upload both the CB decoded correctly in S603 and the CB failed to decode in S603 to a higher layer of the second device.

Optionally, after receiving the retransmitted data, the higher layer of the second device sends the retransmitted data to the server, so that the server processes and transmits the retransmitted data.

The actions of the first device or the second device in S601 to S609 may be executed by the processor 501 in the communication apparatus 50 shown in fig. 5 calling the application program code stored in the memory 503, which is not limited in any way in the embodiment of the present application.

It will be appreciated that in the various embodiments above, the methods and/or steps implemented by the first device may also be implemented by a component (e.g., a chip or circuit) that may be used in the first device; the methods and/or steps implemented by the second device may also be implemented by a component (e.g., a chip or circuit) that may be used in the second device.

The above description has been presented mainly from the point of interaction between the devices. Correspondingly, the embodiment of the application also provides a communication device, which can be the first equipment in the embodiment of the method, or a device containing the first equipment, or a component applicable to the first equipment; alternatively, the communication device may be the second apparatus in the above method embodiment, or an apparatus including the second apparatus, or a component usable with the second apparatus. It is understood that, in order to implement the above-mentioned functions, the first device or the second device and the like include corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm operations described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the present application may divide the functional modules of the first device or the second device according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

For example, in the case where the respective functional modules are divided in an integrated manner, fig. 9 shows a schematic configuration of a communication apparatus 90. The communication device 90 comprises a processing module 901 and a transceiving module 902. The transceiver module 902, which may also be referred to as a transceiver unit, is configured to implement a transceiver function, and may be, for example, a transceiver circuit, a transceiver, or a communication interface.

Illustratively, the communication device 90 is configured to implement the functionality of the first apparatus. The communication means 90 is for example a first device as described in the embodiment shown in fig. 6.

Wherein, processing module 901: for acquiring a first transport block. The first transmission block comprises at least one first code block, the first code block comprises first data, the size of the first code block is equal to a first value, the first value is obtained according to the size of the first data, the first value is larger than or equal to the size of the first data and smaller than or equal to a second value, the second value is predefined or preconfigured, and the second value is a positive integer.

A transceiver module 902, configured to send the first transport block to the second device.

In one possible implementation, the first transmission block further includes at least one second code block, the second code block including second data, the second code block being equal in size to the second value.

In one possible implementation, the second value is 3840 bits or 8448 bits.

In one possible implementation, the transceiver module 902 is further configured to send first information to the second device, where the first information is used to indicate the first value.

In one possible implementation, the first information is further used to indicate at least one of: the number of semi-statically scheduled process numbers or the number of first code blocks, and the resources indicated by the semi-statically scheduled are used for transmitting the first transport blocks.

In one possible implementation, the transceiver module 902 is further configured to receive second information from the second device, where the second information is used to indicate the first value.

In one possible implementation, the second information is further used to indicate at least one of: the number of semi-statically scheduled process numbers or the number of first code blocks, and the resources indicated by the semi-statically scheduled are used for transmitting the first transport blocks.

In a possible implementation, the transceiver module 902 is further configured to send third information to the second device, where the third information is used to indicate a size of the first data.

In one possible implementation, the third information is further used to indicate a generation period of the first data.

In one possible implementation, the transceiver module 902 is further configured to receive fourth information from the second device, where the fourth information is used to schedule a second transport block, and the second transport block includes a redundancy version that is the same as or different from a code block in the first transport block; the transceiver module 902 is further configured to send the second transport block to the second device according to the fourth information.

In one possible implementation, if the first transport block includes at least one first code block, the first field is used to indicate the first code block of the first transport blocks included in the second transport block.

When used to implement the function of the first device, reference is made to the relevant description of the embodiment shown in fig. 6 for other functions that can be implemented by the communication apparatus 90, which will not be repeated.

Alternatively, the communication means 90 is for example used to implement the functionality of the second device. The communication means 90 is for example a second device as described in the embodiment shown in fig. 6.

Wherein, the transceiver module 902 is configured to receive a first transport block from a first device. The first transmission block comprises at least one first code block, the first code block comprises first data, the size of the first code block is equal to a first value, the first value is obtained according to the size of the first data, the first value is larger than or equal to the size of the first data and smaller than or equal to a second value, the second value is predefined, and the second value is a positive integer.

A processing module 901, configured to decode the first transport block.

The transceiver module 902 is further configured to upload, in the first transport block, data in the code block with the correct crc check code to a higher layer of the communication device 90.

In one possible implementation, the second value is 3840 bits or 8448 bits.

In one possible implementation, the transceiver module 902 is further configured to receive first information from the first device, where the first information is used to indicate the first value.

In one possible implementation, the transceiver module 902 is further configured to send second information to the first device, where the second information is used to indicate the first value.

In one possible implementation, the transceiver module 902 is further configured to receive third information from the first device, where the third information is used to indicate a size of the first data.

In a possible implementation, the transceiver module 902 is further configured to send fourth information to the first device if the first transport block is checked for errors, where the fourth information is used to schedule the second transport block, and the second transport block includes a redundancy version that is the same as or different from the code block in the first transport block; a transceiver module 902, configured to receive a second transport block from the first device; the second transport block is decoded.

In one possible implementation, the second transport block includes code blocks that are code blocks that the communication device 90 failed to decode the first transport block.

When used to implement the function of the second device, reference is made to the relevant description of the embodiment shown in fig. 6 for other functions that can be implemented by the communication apparatus 90, which will not be repeated.

In a simple embodiment, one skilled in the art will recognize that the communication device 90 may take the form shown in FIG. 5. For example, the processor 501 in fig. 5 may cause the communication device 90 to perform the method described in the above method embodiment by invoking computer-executable instructions stored in the memory 503.

Illustratively, the functions/implementations of the processing module 901 and the transceiver module 902 in fig. 9 may be implemented by the processor 501 in fig. 5 invoking computer-executable instructions stored in the memory 503. Alternatively, the functions/implementation of the processing module 901 in fig. 9 may be implemented by the processor 501 in fig. 5 invoking computer executable instructions stored in the memory 503, and the functions/implementation of the transceiver module 902 in fig. 9 may be implemented by the communication interface 504 in fig. 5.

It should be noted that one or more of the above modules or units may be implemented in software, hardware, or a combination of both. When any of the above modules or units are implemented in software, the software exists in the form of computer program instructions and is stored in a memory, a processor can be used to execute the program instructions and implement the above method flows. The processor may be built in a SoC (system on a chip) or ASIC, or may be a separate semiconductor chip. The processor may further include necessary hardware accelerators, such as field programmable gate arrays (field programmable gate array, FPGAs), PLDs (programmable logic devices), or logic circuits implementing dedicated logic operations, in addition to the cores for executing software instructions for operation or processing.

When the above modules or units are implemented in hardware, the hardware may be any one or any combination of a CPU, microprocessor, digital signal processing (digital signal processing, DSP) chip, micro control unit (microcontroller unit, MCU), artificial intelligence processor, ASIC, soC, FPGA, PLD, special purpose digital circuitry, hardware accelerator, or non-integrated discrete devices that may run the necessary software or that do not rely on software to perform the above method flows.

Optionally, an embodiment of the present application further provides a chip system, including: at least one processor and an interface, the at least one processor being coupled with the memory through the interface, the at least one processor, when executing the computer programs or instructions in the memory, causing the method of any of the method embodiments described above to be performed. In one possible implementation, the system on a chip further includes a memory. Alternatively, the chip system may be formed by a chip, or may include a chip and other discrete devices, which are not specifically limited in this embodiment of the present application.

Optionally, embodiments of the present application further provide a computer-readable storage medium. All or part of the flow in the above method embodiments may be implemented by a computer program to instruct related hardware, where the program may be stored in the above computer readable storage medium, and when the program is executed, the program may include the flow in the above method embodiments. The computer readable storage medium may be an internal storage unit of the communication device of any of the foregoing embodiments, such as a hard disk or a memory of the communication device. The computer readable storage medium may be an external storage device of the communication apparatus, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card (flash card) or the like provided in the communication apparatus. Further, the computer readable storage medium may further include both an internal storage unit and an external storage device of the communication apparatus. The computer-readable storage medium is used to store the computer program and other programs and data required by the communication device. The above-described computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.

Optionally, the embodiment of the application further provides a computer program product. All or part of the above-described method embodiments may be implemented by a computer program to instruct related hardware, where the program may be stored in the above-described computer program product, and the program, when executed, may include the above-described method embodiments.

Optionally, the embodiment of the application further provides a computer instruction. All or part of the flow in the above method embodiments may be implemented by computer instructions to instruct related hardware (such as a computer, a processor, an access network device, a mobility management network element, or a session management network element, etc.). The program may be stored in the above-mentioned computer readable storage medium or in the above-mentioned computer program product.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of data transmission, for use with a first device, the method comprising:

acquiring a first transmission block, wherein the first transmission block comprises at least one first code block, the first code block comprises first data, the size of the first code block is equal to a first numerical value, the first numerical value is obtained according to the size of the first data, the first numerical value is larger than or equal to the size of the first data and smaller than a second numerical value, the second numerical value is predefined, and the second numerical value is a positive integer;

and sending the first transmission block to a second device.

2. The method of claim 1, wherein the first transport block further comprises at least one second code block comprising second data, the second code block having a size equal to the second value.

3. The method of claim 2, wherein the first data is data of a first logical channel and the second data is data of a second logical channel.

4. A method according to any one of claims 1-3, wherein the second value is 3840 bits or 8448 bits.

5. The method according to any one of claims 1-4, further comprising:

and sending first information to the second device, wherein the first information is used for indicating the first numerical value.

6. The method of claim 5, wherein the first information is further used to indicate at least one of: and the semi-static scheduling indicated resource is used for transmitting the first transmission block.

7. The method according to any one of claims 1-4, further comprising:

second information is received from the second device, the second information being indicative of the first value.

8. The method of claim 7, wherein the second information is further used to indicate at least one of: and the semi-static scheduling indicated resource is used for transmitting the first transmission block.

9. The method of claim 7 or 8, wherein prior to receiving the second information from the second device, the method further comprises:

and sending third information to the second device, wherein the third information is used for indicating the size of the first data.

10. The method of claim 9, wherein the third information is further used to indicate a generation period of the first data.

11. The method according to any of claims 1-10, wherein after transmitting the first transport block to a second device, the method further comprises:

receiving fourth information from the second device, the fourth information being used to schedule a second transport block, the second transport block comprising a redundancy version that is the same as or different from a code block in the first transport block;

and sending the second transmission block to the second device according to the fourth information.

12. The method of claim 11, wherein the fourth information comprises a first field indicating a code block of the first transport block included in the second transport block.

13. The method of claim 12, wherein the step of determining the position of the probe is performed,

The first field is used to indicate a first code block of the first transport blocks included in the second transport block if the first transport block includes the at least one first code block.

14. The method of claim 13, wherein the first transport block further comprises the at least one second code block, wherein the first field is further used to indicate the second code block of the first transport block included in the second transport block, or wherein the first field is further used to indicate whether the second transport block comprises a second code block.

15. The method according to any of claims 11-14, wherein the second transport block comprises a code block that the second device fails to decode the first transport block.

16. A data transmission method, applied to a second device, the method comprising:

receiving a first transport block from a first device, the first transport block comprising at least one first code block, the first code block comprising first data, the first code block having a size equal to a first value, the first value being derived from the size of the first data, the first value being greater than or equal to the size of the first data and less than or equal to a second value, the second value being predefined, the second value being a positive integer;

Decoding the first transport block;

and uploading the data in the code block with the correct cyclic redundancy check code check in the first transmission block to a higher layer of the second equipment.

17. The method of claim 16, wherein the first transport block further comprises at least one second code block comprising second data, the second code block having a size equal to the second value.

18. The method of claim 17, wherein the first data is data of a first logical channel and the second data is data of a second logical channel.

19. The method of any one of claims 16-18, wherein the second value is 3840 bits or 8448 bits.

20. The method according to any one of claims 16-19, further comprising:

first information is received from the first device, the first information being indicative of the first value.

21. The method of claim 20, wherein the first information is further used to indicate at least one of: and the semi-static scheduling indicated resource is used for transmitting the first transmission block.

22. The method according to any one of claims 16-19, further comprising:

and sending second information to the first device, wherein the second information is used for indicating the first numerical value.

23. The method of claim 22, wherein the second information is further used to indicate at least one of: and the semi-static scheduling indicated resource is used for transmitting the first transmission block.

24. The method of claim 22 or 23, wherein prior to transmitting the second information to the first device, the method further comprises:

third information is received from the first device, the third information indicating a size of the first data.

25. The method of claim 24, wherein the third information is further used to indicate a generation period of the first data.

26. The method according to any of claims 16-25, wherein after decoding the first transport block, the method further comprises:

if the first transmission block is checked for errors, fourth information is sent to the first device, wherein the fourth information is used for scheduling a second transmission block, and the second transmission block comprises a redundancy version which is the same as or different from a code block in the first transmission block;

Receiving the second transport block from the first device;

and coding the second transmission block.

27. The method of claim 26, wherein the fourth information comprises a first field indicating a code block of the first transport block included in the second transport block.

28. The method of claim 27, wherein the step of determining the position of the probe is performed,

29. The method of claim 28, wherein the first transport block is further the at least one second code block, wherein the first field is further used to indicate the second code block of the first transport block included in the second transport block, or wherein the first field is further used to indicate whether the second transport block includes a second code block.

30. The method according to any of claims 26-29, wherein the second transport block comprises a code block that the second device failed to decode the first transport block.

31. A communication device comprising means or modules for performing the method of any of claims 1-15 or for performing the method of any of claims 16-30.

32. A communication device, comprising: a processor coupled to a memory for storing a program or instructions that, when executed by the processor, cause the apparatus to perform the method of any one of claims 1 to 15 or to perform the method of any one of claims 16 to 30.

33. A computer readable storage medium having stored thereon a computer program or instructions, which when executed, cause a computer to perform the method of any of claims 1 to 15 or the method of any of claims 16 to 30.

34. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 15 or the method of any one of claims 16 to 30.

35. A chip, characterized in that the chip is coupled to a memory for reading and executing program instructions stored in the memory for implementing the method according to any one of claims 1 to 15 or the method according to any one of claims 16 to 30.