CN111836308A

CN111836308A - Data transmission method and communication equipment

Info

Publication number: CN111836308A
Application number: CN201910303566.4A
Authority: CN
Inventors: 孔垂丽; 张公正; 乔云飞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-10-27
Anticipated expiration: 2039-04-16
Also published as: CN111836308B

Abstract

The embodiment of the application discloses a data transmission method and communication equipment, wherein the method comprises the following steps: the method comprises the steps that first equipment segments a transmission block to obtain a plurality of data segments of the transmission block; the first device sends a plurality of data segments to the second device, wherein time domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the time domain is discontinuous, and/or frequency domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the frequency domain is discontinuous. Based on the method described in the embodiment of the present application, it is beneficial for the second device to successfully decode the transport block.

Description

Data transmission method and communication equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method and a communication device.

Background

For downlink scheduling, an access network device (e.g., a base station) may indicate, through a Physical Downlink Control Channel (PDCCH), a time-frequency resource where downlink data is located, and a Modulation and Coding Scheme (MCS) used by the access network device. Then, after the access network device performs coding modulation on the downlink data according to the MCS, the downlink data is sent to the terminal device through a Physical Downlink Shared Channel (PDSCH). After receiving the downlink data, the terminal device feeds back an ACK message to the access network device if the downlink data is successfully decoded. And if the decoding fails, feeding back a NACK message to the access network equipment. And when the access network equipment receives the ACK message, finishing the downlink scheduling. And when the access network equipment receives the NACK message, the access network equipment needs to retransmit the data.

For uplink scheduling, a terminal device first needs to send a Scheduling Request (SR) to an access network device through a Physical Uplink Control Channel (PUCCH). And then the access network equipment sends uplink authorization information to the terminal equipment through the PDCCH, wherein the uplink authorization information indicates time-frequency resources, MCS and the like of uplink scheduling. And after receiving the uplink authorization information, the terminal equipment performs coding modulation on the uplink data according to the MCS. And transmitting the coded and modulated uplink data through a Physical Uplink Shared Channel (PUSCH). After receiving the uplink data, the access network device feeds back an ACK message to the terminal device if the uplink data is successfully decoded. And if the decoding fails, feeding back a NACK message to the terminal equipment. And when the terminal equipment receives the ACK message, finishing the uplink scheduling. And when the terminal equipment receives the NACK message, the terminal equipment needs to retransmit the data.

Therefore, when one scheduling is completed, the downlink and uplink occupy RTT + T _ proc and 2 × RTT + T _ proc, respectively. Where RTT (round-trip time) is the round-trip delay of the transmission. For example, for downlink scheduling, if the transmission time of downlink data is t1 and the transmission time of ACK message is t2, the RTT is t1+ t 2. T _ proc represents the total processing time, including the data processing time of the access network device and the terminal device, the uplink and downlink switching time, and the like.

For satellite systems, the RTT is large, for example, 544.751ms for GEO satellites. Due to the large RTT, T _ proc is negligible with respect to RTT. Therefore, the time required for scheduling uplink data once is approximately equal to 1s, and the time required for scheduling downlink data once is approximately equal to 0.5 s. The access network device sets a Modulation and Coding Scheme (MCS) used for uplink scheduling or downlink scheduling according to Channel State Information (CSI) or a Channel Quality Indicator (CQI) reported by the terminal device. If the system transmission delay is long, the MCS set by the access network device may be inaccurate. This may result in the data receiver not being able to accurately decode the data.

For example, for uplink scheduling, if the access network device currently determines that the channel quality of a Physical Uplink Shared Channel (PUSCH) is better, the access network device sets a higher MCS for the PUSCH. However, due to the long transmission delay of the system, the terminal device needs a long time to receive the uplink authorization information. At this time, the channel quality of the PUSCH has become poor, and the terminal device modulates and encodes the uplink data of the PUSCH using the MCS set by the access network device, which may cause the access network device to fail to decode the uplink data of the PUSCH after receiving the uplink data of the PUSCH.

Therefore, how to reduce the failure rate of data decoding is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a data transmission method and communication equipment, which are beneficial to reducing the failure rate of data decoding.

In a first aspect, an embodiment of the present application provides a data transmission method, where the method includes: the method comprises the steps that first equipment segments a transmission block to obtain a plurality of data segments of the transmission block; the first device sends a plurality of data segments to the second device, wherein time domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the time domain is discontinuous, and/or frequency domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the frequency domain is discontinuous. Based on the method described in the first aspect, it is advantageous for the second device to successfully decode the transport block.

Optionally, the transport block is a transport block after data interleaving. The error codes can be discretized by adopting interleaving, so that a receiving end can eliminate the random errors by using a coding technology for correcting the random errors, and the transmission quality of the whole data sequence is improved.

Optionally, the first device is an access network device, the second device is a terminal device, and before the first device sends the multiple data segments to the second device, the first device sends first information to the second device, where the first information includes the number of data segments that the transport block needs to be divided, and the first information is also used for the second device to determine time-frequency resources of each data segment of the transport block. Based on the optional mode, the access network device may send the first information to the terminal device in advance to notify the terminal device of the number of data segments to be divided by the transport block and the time-frequency resources of each data segment of the transport block, so that the terminal device may successfully receive the data segments of the transport block.

Optionally, before the first device is a terminal device, the second device is an access network device, and the first device segments the transport block to obtain the multiple data segments of the transport block, the following steps may be further performed: the method comprises the steps that first equipment receives first information from second equipment, wherein the first information comprises the number of data segments of a transmission block to be divided, and the first information is also used for determining time-frequency resources of each data segment of the transmission block by the first equipment; the first equipment determines the time-frequency resource of each data segment of the transmission block according to the first information; the specific implementation manner of the first device segmenting the transmission block to obtain the plurality of data segments of the transmission block is as follows: the first equipment segments the transmission block according to the number of the data segments to obtain a plurality of data segments of the transmission block; the specific implementation manner of the first device sending the plurality of data segments to the second device is as follows: the first device sends a plurality of data segments to the second device according to the time-frequency resources of each data segment of the transmission block. Based on the optional mode, the access network device may send the first information to the terminal device in advance to notify the terminal device of the number of data segments to be divided by the transport block and the time-frequency resources of each data segment of the transport block, so that the terminal device may divide the data segments for the transport block according to the number of the data segments and send the data segments according to the time-frequency resources of each data segment of the transport block.

Optionally, any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent data segments of the transport block, the first information further includes a time-frequency resource of the first data segment, the first time domain offset and the first frequency domain offset, and the first data segment is a first data segment sent by the transport block. Based on the optional mode, the access network device does not directly notify the time-frequency resource of each data segment, and only needs to send the time-frequency resource of the first data segment, the first time domain offset and the first frequency domain offset, so that the terminal device can determine the time-frequency resource of each data segment, and transmission bits are saved.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent data segments of the transport block, the first information further includes a time-frequency resource of the first data segment and a scheduling manner number, the scheduling manner number has a mapping relationship with the time domain offset of each second data segment with respect to the first data segment and the frequency domain offset of each second data segment with respect to the first data segment, the first data segment is a first data segment sent by the transport block, and the second data segment is a data segment of the transport block except for the first data segment. Based on the optional mode, the access network device does not directly inform the time-frequency resource of each data segment, and only needs to send the time-frequency resource of the first data segment and the scheduling mode number, the terminal device can determine the time-frequency resource of each data segment, which is beneficial to saving transmission bits.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent data segments of the transport block, the first information further includes a time-frequency resource and a scheduling mode number of the first data segment, the scheduling mode number and modulation and coding scheme MCS information, a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment have a mapping relationship, the first data segment is a first data segment sent by the transport block, and the second data segment is a data segment of the transport block other than the first data segment. Based on the optional mode, the access network device does not directly inform the time-frequency resource of each data segment, and only needs to send the time-frequency resource of the first data segment and the scheduling mode number, the terminal device can determine the time-frequency resource of each data segment, which is beneficial to saving transmission bits.

Optionally, the first device is an access network device, the second device is a terminal device, and before the first device sends the multiple data segments to the second device, the first device may also send first information to the second device, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range; the specific implementation manner of the first device sending the plurality of data segments to the second device is as follows: the first device sends a plurality of data segments to the second device in the time-frequency resource range. Based on this alternative, it is advantageous to save transmission bits.

Optionally, the first device may determine the number of data segments that the transport block needs to be divided according to the channel quality or the transmission delay requirement of the PDSCH. Based on the optional mode, the number of the data segments which need to be divided by the transmission block can be flexibly determined.

Optionally, the first device is a terminal device, the second device is an access network device, and the first device receives first information from the second device before segmenting the transport block to obtain a plurality of data segments of the transport block, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range; the specific implementation manner of the first device for segmenting the transport block is as follows: the first equipment segments the transmission block according to the number of the data segments; the specific implementation manner of the first device sending the plurality of data segments to the second device is as follows: the first device sends a plurality of data segments to the second device in the time-frequency resource range. Based on this alternative, it is advantageous to save transmission bits.

In a second aspect, an embodiment of the present application provides a data transmission method, where the method includes: the second device receives a plurality of data segments of a transmission block from the first device, wherein time domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in a frequency domain is discontinuous; the second device combines the plurality of data segments into a transport block.

Optionally, the transport block is a transport block after data interleaving.

Optionally, before the first device is an access network device, the second device is a terminal device, and the second device receives the multiple data segments of the transport block from the first device, the following steps may be further performed: the second equipment receives first information from the first equipment, wherein the first information comprises the number of data segments of the transmission block to be divided, and the first information is also used for the second equipment to determine the time-frequency resource of each data segment of the transmission block; the second equipment determines the time-frequency resource of each data segment of the transmission block according to the first information; the specific implementation manner of the second device receiving the plurality of data segments of the transport block from the first device is as follows: the second device receives the plurality of data segments of the transport block from the first device according to the number of data segments and the time-frequency resources of each data segment of the transport block.

Optionally, the first device is a terminal device, the second device is an access network device, and before the second device receives the multiple data segments of the transport block from the first device, the second device sends first information to the second device, where the first information includes the number of data segments that the transport block needs to be divided, and the first information is also used for the first device to determine time-frequency resources of each data segment of the transport block.

Optionally, any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent data segments of the transport block, the first information further includes a time-frequency resource of the first data segment, the first time domain offset and the first frequency domain offset, and the first data segment is a first data segment sent by the transport block.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent data segments of the transport block, the first information further includes a time-frequency resource of the first data segment and a scheduling manner number, the scheduling manner number has a mapping relationship with a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment, the first data segment is a first data segment sent by the transport block, and the second data segment is a data segment of the transport block except for the first data segment.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent data segments of the transport block, the first information further includes a time-frequency resource and a scheduling mode number of the first data segment, the scheduling mode number and modulation and coding scheme MCS information, a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment have a mapping relationship, the first data segment is a first data segment sent by the transport block, and the second data segment is a data segment of the transport block other than the first data segment.

Optionally, the first device is an access network device, the second device is a terminal device, and before the second device receives the multiple data segments of the transport block from the first device, the second device receives first information from the first device, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range; the specific implementation manner of the second device receiving the plurality of data segments of the transport block from the first device is as follows: the second device receives a plurality of data segments of the transport block from the first device over a range of time-frequency resources according to the number of data segments.

Optionally, the first device is a terminal device, the second device is an access network device, and before the second device receives the multiple data segments of the transport block from the first device, the second device sends first information to the second device, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range; the specific implementation manner of the second device receiving the plurality of data segments of the transport block from the first device is as follows: the second device receives a plurality of data segments of the transport block from the first device over a range of time-frequency resources according to the number of data segments.

Optionally, the second device determines the number of data segments that the transmission block needs to be divided into according to the channel quality or the transmission delay requirement of the physical uplink shared channel PUSCH.

Based on the same inventive concept, the beneficial effects of the second aspect or the optional manner of the second aspect may refer to the beneficial effects of the first aspect or the optional manner of the first aspect, and repeated details are not repeated.

In a third aspect, an embodiment of the present application provides a data transmission method, where the method includes: the method comprises the steps that first equipment obtains a transmission block to be sent; the first device sends a plurality of transmission blocks to the second device, wherein the time domain resources of each transmission block are different and the distribution of the plurality of transmission blocks in the time domain is discontinuous, and/or the frequency domain resources of each transmission block are different and the distribution of the plurality of transmission blocks in the frequency domain is discontinuous. Based on the method described in the third aspect, the second device is facilitated to successfully decode the transport block.

Optionally, the first device is an access network device, the second device is a terminal device, and before the first device sends multiple transmission blocks to the second device, the first device sends first information to the second device, where the first information includes the number of transmission blocks, and the first information is also used by the second device to determine time-frequency resources of each transmission block; the specific implementation manner of the first device sending the multiple transmission blocks to the second device is as follows: and the first equipment sends the transmission block multiple copies to the second equipment according to the sending copies and the time-frequency resource of each transmission block. Based on the optional mode, the access network device may send the first information to the terminal device in advance to notify the terminal device of the sending fraction of the transport blocks and the time-frequency resources of each transport block, so that the terminal device may successfully receive the transport blocks.

Optionally, before the first device is a terminal device and the second device is an access network device, and the first device sends multiple transport blocks to the second device, the following steps may be further performed: the method comprises the steps that first equipment receives first information from second equipment, wherein the first information comprises the sending number of transmission blocks, and the first information is also used for the first equipment to determine the time-frequency resource of each transmission block; the first equipment determines the time-frequency resource of each transmission block according to the first information; the specific implementation manner of the first device sending the multiple transmission blocks to the second device is as follows: and the first equipment sends the transmission block multiple copies to the second equipment according to the transmission copies of the transmission blocks and the time-frequency resource of each transmission block. Based on the optional mode, the access network device may send the first information to the terminal device in advance to notify the terminal device of the number of the transmission blocks to be sent and the time-frequency resource of each transmission block, so that the terminal device may send the same number of transmission blocks to the access network device according to the number of the transmission blocks to be sent and the time-frequency resource of each transmission block.

Optionally, any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between the transmission blocks sent twice in an adjacent manner, the first frequency domain offset is a frequency domain offset between the transmission blocks sent twice in an adjacent manner, and the first information further includes a time-frequency resource of the transmission block sent for the first time, the first time domain offset, and the first frequency domain offset. Based on the optional mode, the access network device does not directly notify the time-frequency resource of each transport block, and only needs to send the time-frequency resource of the transport block sent for the first time, the first time domain offset and the first frequency domain offset, so that the terminal device can determine the time-frequency resource of each transport block, and transmission bits are saved.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted transport blocks, the first frequency domain offset is a frequency domain offset between two adjacent transmitted transport blocks, the first information further includes a time-frequency resource and a scheduling mode number of the first transport block, the scheduling mode number has a mapping relationship with a time domain offset of each second transport block relative to the first transport block and a frequency domain offset of each second transport block relative to the first transport block, the first transport block is a first transmitted transport block, and the second transport block is a transport block transmitted except the first transport block. Based on the optional mode, the access network device does not directly inform the time-frequency resource of each transport block, and only needs to send the time-frequency resource of the first transport block and the scheduling mode number, the terminal device can determine the time-frequency resource of each transport block, which is beneficial to saving transmission bits.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmission blocks, the first frequency domain offset is a frequency domain offset between two adjacent transmission blocks, the first information further includes a time-frequency resource and a scheduling mode number of the first transmission block, the scheduling mode number and modulation and coding scheme MCS information, a time domain offset of each second transmission block with respect to the first transmission block and a frequency domain offset of each second transmission block with respect to the first transmission block have a mapping relationship, the first transmission block is a transmission block sent for the first time, and the second transmission block is a transmission block sent except the first transmission block. Based on the optional mode, the access network device does not directly inform the time-frequency resource of each transport block, and only needs to send the time-frequency resource of the first transport block and the scheduling mode number, the terminal device can determine the time-frequency resource of each transport block, which is beneficial to saving transmission bits.

Optionally, the first device is an access network device, the second device is a terminal device, and before the first device sends multiple transmission blocks to the second device, the first device sends first information to the second device, where the first information includes the sending number of transmission blocks and a time-frequency resource range; the specific implementation manner of the first device sending the multiple transmission blocks to the second device is as follows: and the first equipment sends the transmission block multiple copies to the second equipment in the time-frequency resource range according to the sending copies. Based on this alternative, it is advantageous to save bit information.

Optionally, before the first device sends the first information to the second device, the first device determines the number of transmission copies of the transport block according to the channel quality of the PDSCH. Based on the optional mode, the number of transmission blocks needing to be transmitted can be flexibly determined.

Optionally, the first device is a terminal device, the second device is an access network device, and before the first device sends the transport block to the second device for multiple times, the first device receives first information from the second device, where the first information includes the number of transmission copies of the transport block and a time-frequency resource range; the specific implementation manner of the first device sending the multiple transmission blocks to the second device is as follows: and the first equipment sends the transmission block multiple copies to the second equipment in the time-frequency resource range according to the sending copies. Based on the optional mode, the transmission block can be decoded quickly and accurately.

In a fourth aspect, an embodiment of the present application provides a data transmission method, where the method includes: the second device receives multiple copies of the same transmission block from the first device, wherein the time domain resources of each transmission block are different, and the distribution of the multiple transmission blocks in the time domain is discontinuous, and/or the frequency domain resources of each transmission block are different, and the distribution of the multiple transmission blocks in the frequency domain is discontinuous; the second device combines the multiple transport blocks.

Optionally, before the first device is an access network device, the second device is a terminal device, and the second device receives multiple copies of the same transport block from the first device, the following steps may be further performed: the second equipment receives first information from the first equipment, wherein the first information comprises the sending number of transmission blocks, and the first information is also used for the second equipment to determine the time-frequency resource of each transmission block; the second equipment determines the time-frequency resource of each transmission block according to the first information; the specific implementation manner of the second device receiving multiple copies of the same transport block from the first device is as follows: and the second equipment receives the same transmission block from the first equipment according to the transmission number and the time-frequency resource of each transmission block.

Optionally, the first device is a terminal device, the second device is an access network device, and before the second device receives multiple copies of the same transport block from the first device, the second device sends first information to the first device, where the first information includes the number of copies sent of the transport block, and the first information is also used for the first device to determine time-frequency resources of each transport block; the specific implementation manner of the second device receiving multiple copies of the same transport block from the first device is as follows: and the second equipment receives the same transmission block from the first equipment according to the transmission number and the time-frequency resource of each transmission block.

Optionally, any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between the transmission blocks sent twice in an adjacent manner, the first frequency domain offset is a frequency domain offset between the transmission blocks sent twice in an adjacent manner, and the first information further includes a time-frequency resource of the transmission block sent for the first time, the first time domain offset, and the first frequency domain offset.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted transport blocks, the first frequency domain offset is a frequency domain offset between two adjacent transmitted transport blocks, the first information further includes a time-frequency resource and a scheduling mode number of the first transport block, the scheduling mode number has a mapping relationship with a time domain offset of each second transport block relative to the first transport block and a frequency domain offset of each second transport block relative to the first transport block, the first transport block is a first transmitted transport block, and the second transport block is a transport block transmitted except the first transport block.

Optionally, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmission blocks, the first frequency domain offset is a frequency domain offset between two adjacent transmission blocks, the first information further includes a time-frequency resource and a scheduling mode number of the first transmission block, the scheduling mode number and modulation and coding scheme MCS information, a time domain offset of each second transmission block with respect to the first transmission block and a frequency domain offset of each second transmission block with respect to the first transmission block have a mapping relationship, the first transmission block is a transmission block sent for the first time, and the second transmission block is a transmission block sent except the first transmission block.

Optionally, the first device is an access network device, the second device is a terminal device, and before the second device receives multiple copies of the same transport block from the first device, the second device receives first information from the first device, where the first information includes the number of transmission copies of the transport block and a time-frequency resource range; the specific implementation manner of the second device receiving multiple copies of the same transport block from the first device is as follows: and the second equipment receives the same transmission block from the first equipment in the time-frequency resource range according to the transmission number.

Optionally, the first device is a terminal device, the second device is an access network device, and before the second device receives multiple copies of the same transport block from the first device, the second device sends first information to the first device, where the first information includes the number of transmission copies of the transport block and a time-frequency resource range; the specific implementation manner of the second device receiving multiple copies of the same transport block from the first device is as follows: and the second equipment receives the same transmission block from the first equipment in the time-frequency resource range according to the transmission number.

Optionally, before the second device sends the first information to the first device, the second device determines the number of transmission copies of the transport block according to the channel quality of a physical uplink shared channel, PUSCH.

Optionally, when the second device successfully decodes the merged transport block, an ACK message is sent to the first device, where the merged transport block is a transport block obtained by merging M received transport blocks, and M is less than or equal to the number N of transmission copies of the transport block.

Based on the same inventive concept, the beneficial effects of the fourth aspect or the optional manner of the fourth aspect may refer to the beneficial effects of the third aspect or the optional manner of the third aspect, and repeated details are not repeated.

A fifth aspect provides a communication device, which is capable of executing the method of any one of the first to fourth aspects and optional implementations of the first to fourth aspects. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions. The unit may be software and/or hardware. Based on the same inventive concept, the principle and the advantageous effects of the communication device to solve the problem may refer to the method and the advantageous effects of any one of the foregoing first aspect to fourth aspect, and optional implementations of the first aspect to the fourth aspect, and repeated details are omitted.

In a sixth aspect, a communication device is provided, the network device comprising: a processor, a memory, a communication interface; the processor, the communication interface and the memory are connected; wherein the communication interface may be a transceiver. The communication interface is used for realizing communication with other network elements. One or more programs are stored in the memory, and the processor calls the programs stored in the memory to implement the method of any one of the first to fourth aspects and the optional implementations of the first to fourth aspects, where the method and the beneficial effects of the network device for solving the problems may refer to the method and the beneficial effects of any one of the first to fourth aspects and the optional implementations of the first to fourth aspects, and repeated points are not described again.

A seventh aspect provides a computer program product which, when run on a computer, causes the computer to perform the method of any one of the first to fourth aspects, optional implementations of the first aspect to optional implementations of the fourth aspect.

In an eighth aspect, there is provided a chip product for performing the method of any one of the first to fourth aspects, and optional embodiments of the first to fourth aspects.

A ninth aspect provides a computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method of any one of the first to fourth aspects, optional implementations of the first aspect to optional implementations of the fourth aspect.

Drawings

Fig. 1 is a schematic structural diagram of a conventional communication system;

fig. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a data segment provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a data segment provided by an embodiment of the present application;

fig. 5 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 6 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 7 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 8 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 9 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 10 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 11 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 12 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 13 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 14 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 15 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 16 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 17 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 18 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 19 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 20 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 21 is a schematic diagram of a time-frequency resource of a data segment according to an embodiment of the present application;

fig. 22 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 23 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 24 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 25 is a schematic flowchart of a data transmission method according to an embodiment of the present application;

fig. 26 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 27 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

Specific embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In order to better understand the embodiments of the present application, a system architecture to which the embodiments of the present application can be applied is described below.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application. As shown in fig. 1, the communication system includes a first device and a second device. And when the first equipment is access network equipment, the second equipment is terminal equipment. And when the first equipment is terminal equipment, the second equipment is access network equipment. Data sent by the access network device to the terminal device is called downlink data, and data sent by the terminal device to the access network device is called uplink data.

The access network device may provide communication coverage for a specific geographic area, and may communicate with a terminal device located in the coverage area, and the access network device may support communication protocols of different systems or may support different communication modes. For example, the access network device may be an evolved node B (eNB or eNodeB) in an LTE system, or a radio network controller in a Cloud Radio Access Network (CRAN), or may be an access network device in a 5G network, such as a gNB, or may be a small station, a micro station, or a Transmission Reception Point (TRP), or may be an access network device in a relay station, an access point, or a Public Land Mobile Network (PLMN) for future evolution, and the like.

The terminal device may refer to an access terminal, a User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile terminal, a user terminal, a wireless communication device, a user agent, or a user equipment. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in the internet of things, a virtual reality device, a terminal device in a future 5G network, a terminal device in a future evolved Public Land Mobile Network (PLMN), or the like.

The following further describes the data transmission method and the communication device provided in the present application.

Referring to fig. 2, fig. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present application. As shown in fig. 2, the data transmission method includes the following steps 201 to 203, wherein:

201. the first device segments a Transport Block (TB) to obtain a plurality of data segments of the Transport Block.

As mentioned above, the first device may be an access network device or a terminal device. And when the first equipment is access network equipment, the second equipment is terminal equipment. And when the first equipment is terminal equipment, the second equipment is access network equipment. When the first device is an access network device and the second device is a terminal device, the transmission block is a transmission block for downlink transmission. When the first device is a terminal device and the second device is an access network device, the transmission block is a transmission block for uplink transmission.

The first device may divide the transmission block into 2 data segments, or into 3 data segments, or into 4 data segments, or into more data segments, which is not limited in the embodiment of the present application.

As an optional implementation manner, the transport block may be a transport block without data interleaving, that is, the transport block to be transmitted is directly segmented, and then a plurality of data segments of the transport block are obtained.

As an optional implementation manner, the transport block may be a transport block obtained after data interleaving, that is, the transport block to be transmitted is first subjected to data interleaving, and then the transport block subjected to data interleaving is segmented to obtain a plurality of data segments of the transport block subjected to data interleaving.

On such a variable parameter channel of land mobile communication, a continuous deep fading valley point affects a series of bits one after another, so that bit errors often occur in series. However, channel coding can only detect and correct single errors and not too long error strings. In order to solve the problem of bit errors in strings, an interleaving technique is adopted: a method of spreading out successive bits in a message, i.e. successive bits in a message are transmitted in a non-successive manner. Thus, even if a string error occurs during transmission, the error becomes a single (or short length) erroneous bit when recovered as a message in a sequential string of bits. That is, the error code can be discretized by interleaving, so that the receiving end can eliminate the random error by using a coding technique for correcting the random error, thereby improving the transmission quality of the entire data sequence.

As an optional implementation manner, the data of the plurality of data segments of the transport block does not have overlapping data, or at least two data segments of the plurality of data segments of the transport block have overlapping data, that is, the plurality of data segments include redundancy versions of the transport block.

For example, the data of the plurality of data segments of the transport block does not have overlapping is taken as an example. As shown in fig. 3, the transport block is divided into 3 data segments, and the data of each data segment does not overlap.

For another example, at least two data segments of the plurality of data segments of the transport block have overlapping data. As shown in fig. 4, the transport block is divided into 3 data segments, the data of data segment 1 and data segment 2 overlap, the data of data segment 2 and data segment 3 overlap, and the data of data segment 1 and data segment 3 also overlap.

As an alternative implementation manner, the lengths of the data segments may be the same or different, and this embodiment of the present application is not limited.

202. The first device transmits the plurality of data segments to the second device.

Specifically, after the first device obtains the plurality of data segments of the transport block, the first device sends the plurality of data segments to the second device.

The time domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the time domain is discontinuous, and/or the frequency domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the frequency domain is discontinuous.

For example, the time domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the time domain is discontinuous. Assume that the plurality of data segments includes 3 data segments, data segment 1, data segment 2, and data segment 3, respectively. Wherein, the discontinuity of the distribution of the plurality of data segments in the time domain may mean that the plurality of data segments are completely discontinuous in the time domain. As shown in fig. 5, the time domain resources of data segment 1, data segment 2 and data segment 3 are different, and data segment 1, data segment 2 and data segment 3 are discontinuous in the time domain. Alternatively, the discontinuous distribution of the plurality of data segments in the time domain means that the plurality of data segments are partially discontinuous in the time domain. As shown in fig. 6, the time domain resources of data segment 1, data segment 2 and data segment 3 are different, and data segment 1 and data segment 2 are continuous in the time domain, and data segment 2 and data segment 3 are discontinuous in the time domain.

For another example, the frequency domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the frequency domain is discontinuous. Assume that the plurality of data segments includes 3 data segments, data segment 1, data segment 2, and data segment 3, respectively. Wherein, the discontinuous distribution of the plurality of data segments in the frequency domain may mean that the plurality of data segments are completely discontinuous in the frequency domain. As shown in fig. 7, the frequency domain resources of data segment 1, data segment 2 and data segment 3 are different, and data segment 1, data segment 2 and data segment 3 are discontinuous in the frequency domain. Or, the discontinuous distribution of the plurality of data segments in the frequency domain means that the plurality of data segments are discontinuous in the frequency domain part. As shown in fig. 8, the frequency domain resources of data segment 1, data segment 2 and data segment 3 are different, and data segment 1 and data segment 2 are continuous in the frequency domain, and data segment 2 and data segment 3 are discontinuous in the frequency domain.

For another example, the time domain resources of different data segments in the plurality of data segments are different, the distribution of the plurality of data segments in the time domain is discontinuous, the frequency domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the frequency domain is discontinuous. Assume that the plurality of data segments includes 3 data segments, data segment 1, data segment 2, and data segment 3, respectively. As shown in fig. 9, the time domain resources and frequency domain resources of data segment 1, data segment 2, and data segment 3 are different, and data segment 1, data segment 2, and data segment 3 are discontinuous in both time domain and frequency domain. The discontinuous distribution of the plurality of data segments in the time domain may mean that the plurality of data segments are completely discontinuous in the time domain, or the discontinuous distribution of the plurality of data segments in the time domain means that the plurality of data segments are partially discontinuous in the time domain. The discontinuous distribution of the plurality of data segments in the frequency domain may refer to that the plurality of data segments are completely discontinuous in the frequency domain, and the discontinuous distribution of the plurality of data segments in the time domain refers to that the plurality of data segments are partially discontinuous in the frequency domain. Fig. 9 illustrates an example in which a plurality of data segments are completely discontinuous in time and frequency domains.

203. The second device combines the plurality of data segments into a transport block.

In the embodiment of the present application, after receiving a plurality of data segments of a transport block from a first device, a second device synthesizes the plurality of data segments into the transport block.

For example, the first device divides the transport block into 3 data segments, data segment 1, data segment 2, and data segment 3, respectively. After the second device receives the data segment 1, the data segment 2, and the data segment 3, the data segment 1, the data segment 2, and the data segment 3 are combined into a transport block.

If the synthesized transmission block is the transmission block after data interleaving, the second device needs to restore the synthesized transmission block to the transmission block before data interleaving after synthesizing the plurality of data segments into the transmission block.

It can be seen that, by implementing the method described in fig. 2, the time domain resources of the data segments of the transport block are different and the distribution of the data segments is discontinuous in the time domain, and/or the frequency domain resources of the data segments of the transport block are different and the distribution of the data segments is discontinuous in the frequency domain. Therefore, the second device can obtain the time domain diversity gain and/or the frequency domain diversity gain, which is beneficial for the second device to successfully decode the transmission block.

Referring to fig. 10, fig. 10 is a schematic flowchart of a data transmission method according to an embodiment of the present application. In fig. 10, the first device is an access network device, and the second device is a terminal device. The application scenario of fig. 10 is a downlink transmission application scenario of a transport block. As shown in fig. 10, the data transmission method includes the following steps 1001 to 1005, wherein:

1001. the access network equipment sends the first information to the terminal equipment.

The first information includes the number of data segments divided by the transmission block, and the first information is also used for the terminal device to determine the time-frequency resource of each data segment of the transmission block.

That is, the access network device needs to determine the number of data segments into which the transport block is divided, and determine the time-frequency resources of each data segment of the transport block. And after the access network equipment determines the number of the data segments and determines the time-frequency resources of each data segment of the transmission block, the access network equipment sends first information to the terminal equipment. Optionally, the first information may be Downlink Control Information (DCI), or other information.

As an optional implementation manner, the access network device determines the number of data segments that the transport block needs to divide according to a channel quality or a transmission delay requirement of a Physical Downlink Shared Channel (PDSCH). Based on the embodiment, the number of the data segments which need to be divided by the transmission block can be flexibly determined.

For example, if the channel quality of the PDSCH is good, the number of data segments that the transport block needs to be divided into may be smaller, so that the receiving end may receive the data segments of the transport block more quickly. If the channel quality of the PDSCH is poor, the number of data segments that the transmission block needs to divide may be large, and the larger the number of data segments, the more the time domain diversity gain and/or frequency domain diversity gain are obtained, which is beneficial to reducing the failure rate of the receiving end to decode data. For another example, if the requirement of transmission delay is high, the number of data segments that the transmission block needs to be divided into may be small, so that the receiving end may receive the data segments of the transmission block more quickly, and the requirement of transmission delay is met. If the requirement on transmission delay is low, the number of data segments required to be divided by the transmission block can be large, and the larger the number of the data segments is, the more the time domain diversity gain and/or the frequency domain diversity gain are obtained, so that the failure rate of the receiving end on decoding the data is reduced.

1002. And the terminal equipment determines the time-frequency resource of each data segment of the transmission block according to the first information.

In the embodiment of the application, after receiving the first information from the access network device, the terminal device determines the time-frequency resource of each data segment of the transport block according to the first information. For example, if the transmission block is divided into 3 data segments, the number of the data segments divided by the transmission block included in the first information is 3, and the first information is further used for the terminal device to determine the time-frequency resources of the 3 data segments of the transmission block. And after receiving the first information, the terminal equipment determines the time-frequency resources of the 3 data segments of the transmission block according to the first information.

The access network device may indicate the time-frequency resource of each data segment of the transport block of the terminal device in the following manners.

The first method is as follows: any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent data segments sent by the transmission block, the first frequency domain offset is a frequency domain offset between two adjacent data segments sent by the transmission block, the first information further includes a time-frequency resource of the first data segment, the first time domain offset and the first frequency domain offset, and the first data segment is a first data segment sent by the transmission block.

Accordingly, the terminal device may determine the time-frequency resource of the second transmitted data segment according to the time-frequency resource of the first data segment, the first time domain offset, and the first frequency domain offset. The terminal equipment can determine the time-frequency resource of the third sent data segment according to the time-frequency resource of the second sent data segment, the first time domain offset and the first frequency domain offset. And by analogy, the time-frequency resource of the next data segment can be determined according to the time-frequency resource of the previous data segment, the first time domain offset and the first frequency domain offset.

For example, the access network device determines that the number of data segments into which the transport block needs to be divided is 3, and the time-frequency resources allocated by the access network device for the data segments 1 to 3 are as shown in fig. 11. As shown in fig. 11, the time domain resources and the frequency domain resources of data segment 1, data segment 2, and data segment 3 are different. The time domain offset between data segment 1 and data segment 2 is 2 symbols. The time domain offset between data segment 2 and data segment 3 is 2 symbols. The frequency domain offset between data segment 1 and data segment 2 is 30 khz. The frequency domain offset between data segment 2 and data segment 3 is 30 khz. That is, the time domain offset between data segment 1 and data segment 2 is equal to the time domain offset between data segment 2 and data segment 3. The frequency domain offset between data segment 1 and data segment 2 is equal to the frequency domain offset between data segment 2 and data segment 3. The first information sent by the access network device to the terminal device includes the number of data segments to be divided by the transport block (i.e. 3), the time-frequency resource of the data segment 1, the first time domain offset (i.e. 2 symbols), and the first frequency domain offset (i.e. 30 khz). After receiving the first information, the terminal device may determine the time-frequency resource of the data segment 2 according to the time-frequency resource of the data segment 1, the first time domain offset (i.e. 2 symbols), and the first frequency domain offset (i.e. 30 khz). The time domain resource of data segment 2 is the time domain resource of data segment 1+ 2 symbols. The frequency domain resource of data segment 2 is the frequency domain resource of data segment 1+ 30 khz. After the terminal device determines the time-frequency resource of the data segment 2, the time-frequency resource of the data segment 3 can be determined according to the time-frequency resource of the data segment 2, the first time domain offset (i.e. 2 symbols) and the first frequency domain offset (i.e. 30 khz). Time domain resource of data segment 3 is the time domain resource of data segment 2 +2 symbols. The frequency domain resource of data segment 3 is the frequency domain resource of data segment 2 +30 khz.

Based on the first mode, the access network device does not directly notify the time-frequency resource of each data segment, and only needs to send the time-frequency resource of the first data segment, the first time domain offset and the first frequency domain offset, the terminal device can determine the time-frequency resource of each data segment, which is beneficial to saving transmission bits.

The second method comprises the following steps: the first information further comprises time-frequency resources of the first data segment and a scheduling mode number, the scheduling mode number has a mapping relation with the time-domain offset of each second data segment relative to the first data segment and the frequency-domain offset of each second data segment relative to the first data segment, the first data segment is the data segment of the transmission block, and the second data segment is the data segment of the transmission block except the first data segment.

Correspondingly, the terminal device stores the mapping relationship between the scheduling mode number and the time domain offset of each second data segment relative to the first data segment and the frequency domain offset of each second data segment relative to the first data segment. After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relation stored in the terminal device, the time domain offset of each second data segment relative to the first data segment and the frequency domain offset of each second data segment relative to the first data segment can be determined. The terminal device may determine the time-frequency resource of the second data segment according to the time-frequency resource of the first data segment, the time-domain offset of the second data segment with respect to the first data segment, and the frequency-domain offset of the second data segment with respect to the first data segment.

For example, the access network device determines that the number of data segments into which the transport block needs to be divided is 3, and the time-frequency resources allocated by the access network device for the data segments 1 to 3 are as shown in fig. 12. As shown in fig. 12, the time domain resources and the frequency domain resources of data segment 1, data segment 2, and data segment 3 are different. The time domain offset between data segment 1 and data segment 2 is 2 symbols. The time domain offset between data segment 2 and data segment 3 is 3 symbols. The frequency domain offset between data segment 1 and data segment 2 is 30 khz. The frequency domain offset between data segment 2 and data segment 3 is 40 khz. That is, the time domain offset between data segment 1 and data segment 2 is not equal to the time domain offset between data segment 2 and data segment 3. The frequency domain offset between data segment 1 and data segment 2 is not equal to the frequency domain offset between data segment 2 and data segment 3. The first information sent by the access network device to the terminal device includes the number 3 of data segments to be divided by the transmission block, the time-frequency resource of the data segment 1, and the scheduling mode number 1.

As shown in table 1 below, both the access network device and the terminal device store mapping relationships between the scheduling mode numbers and time domain offsets of the respective second data segments relative to the first data segment and frequency domain offsets of the respective second data segments relative to the first data segment. The scheduling mode number 1 corresponds to a time domain offset (i.e. 2 symbols) of the data segment 2 relative to the data segment 1, a time domain offset (i.e. 5 symbols) of the data segment 3 relative to the data segment 1, a frequency domain offset (i.e. 30khz) of the data segment 2 relative to the data segment 1, and a frequency domain offset (i.e. 70khz) of the data segment 3 relative to the data segment 1. Scheduling number 2 corresponds to the time domain offset of data segment 2 relative to data segment 1 (i.e., 4 symbols), the time domain offset of data segment 3 relative to data segment 1 (i.e., 6 symbols), the frequency domain offset of data segment 2 relative to data segment 1 (i.e., 40khz), and the frequency domain offset of data segment 3 relative to data segment 1 (i.e., 70 khz). Scheduling number 3 corresponds to the time domain offset of data segment 2 relative to data segment 1 (i.e., 3 symbols), the time domain offset of data segment 3 relative to data segment 1 (i.e., 7 symbols), the frequency domain offset of data segment 2 relative to data segment 1 (i.e., 50khz), and the frequency domain offset of data segment 3 relative to data segment 1 (i.e., 80 khz).

TABLE 1

As shown in fig. 12, since the time domain offset of data segment 2 relative to data segment 1 is 2 symbols, the time domain offset of data segment 3 relative to data segment 1 is 5 symbols, the frequency domain offset of data segment 2 relative to data segment 1 is 30khz, and the frequency domain offset of data segment 3 relative to data segment 1 is 70 khz. Therefore, the access network device carries the number of data segments (i.e. 3) to be divided by the transport block, the time-frequency resource of the data segment 1, and the scheduling mode number 1 in the first information. After receiving the first information from the access network device, the terminal device obtains, according to the mapping relationship in table 1 above, the time domain offset of the data segment 2 corresponding to the scheduling mode number 1 with respect to the data segment 1, the time domain offset of the data segment 3 with respect to the data segment 1, the frequency domain offset of the data segment 2 with respect to the data segment 1, and the frequency domain offset of the data segment 3 with respect to the data segment 1. And the terminal equipment determines the time-frequency resource of the data segment 2 according to the time-frequency resource of the data segment 1, the time domain offset of the data segment 2 relative to the data segment 1 and the frequency domain offset of the data segment 2 relative to the data segment 1. The time domain resource of data segment 2 is the frequency domain resource of data segment 1+ 2 symbols. The frequency domain resource of data segment 2 is the frequency domain resource of data segment 1+ 30 khz. And the terminal equipment determines the time-frequency resource of the data segment 3 according to the time-frequency resource of the data segment 1, the time domain offset of the data segment 3 relative to the data segment 1 and the frequency domain offset of the data segment 3 relative to the data segment 1. The time domain resource of data segment 3 is the frequency domain resource of data segment 1+ 5 symbols. The frequency domain resource of data segment 3 is +70khz of data segment 1.

Of course, a plurality of mapping tables may be stored in the terminal device and the access network device. The number of data segments to be divided by different transmission blocks corresponds to different mapping relation tables. For example, when the number of data segments to be divided by the transport block is 3, the corresponding mapping table may be the table 1 above. When the number of data segments to be divided by the transport block is 4, the corresponding mapping table may be the following table 2.

TABLE 2

As shown in fig. 12, the access network device determines that the number of data segments into which the transport block needs to be divided is 3, and therefore, the access network device obtains the corresponding scheduling mode number 1 from the mapping relationship in table 1 and carries the scheduling mode number in the first information. After the terminal device receives the first information, since the number of data segments to be divided by the transport block carried in the first information is 3, the terminal device obtains the time domain offset and the frequency domain offset corresponding to the scheduling mode number 1 from table 1.

Or, the access network device and the terminal device only include one mapping relation table, and the mapping relation table is a general table. For example, if the maximum number of data segments to be divided by the transport block is 4, the mapping relationship table included in the access network device and the terminal device may be as shown in table 2. As shown in fig. 12, the access network device determines that the number of data segments into which the transport block needs to be divided is 3. Data segment 2 is time-domain offset from data segment 1 by 2 symbols and data segment 3 is time-domain offset from data segment 1 by 5 symbols. Data segment 2 has a frequency domain offset of 30khz relative to data segment 1 and data segment 3 has a frequency domain offset of 70khz relative to data segment 1. Therefore, the access network device obtains the corresponding scheduling mode number 1 from the mapping relationship in table 2 and carries the scheduling mode number in the first information. After the terminal device receives the first information, because the number of data segments to be divided by the transport block carried in the first information is 3, the terminal device only obtains the time domain offset of the data segment 2 corresponding to the scheduling mode number 1 relative to the data segment 1, the time domain offset of the data segment 3 relative to the data segment 1, the frequency domain offset of the data segment 2 relative to the data segment 1, and the frequency domain offset of the data segment 3 relative to the data segment 1 from table 2. And the terminal equipment determines the time-frequency resource of the data segment according to the acquired time domain offset and frequency domain offset.

Based on the second mode, the access network device does not directly notify the time-frequency resource of each data segment, and only needs to send the time-frequency resource of the first data segment and the scheduling mode number, the terminal device can determine the time-frequency resource of each data segment, which is beneficial to saving transmission bits.

The third method comprises the following steps: the first information also comprises time-frequency resources of the first data segment and a scheduling mode number, the scheduling mode number and Modulation and Coding Scheme (MCS) information, the time domain offset of each second data segment relative to the first data segment and the frequency domain offset of each second data segment relative to the first data segment have a mapping relation, the first data segment is a first sent data segment of the transport block, and the second data segment is a data segment of the transport block except the first data segment.

Wherein, the MCS information may include one or more of a modulation order, a spectrum efficiency and a target code rate.

Correspondingly, the terminal equipment stores the mapping relation between the scheduling mode number and the MCS information, the time domain offset of each second data segment relative to the first data segment and the frequency domain offset of each second data segment relative to the first data segment. After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relation stored in the terminal device, the MCS information, the time domain offset of each second data segment relative to the first data segment, and the frequency domain offset of each second data segment relative to the first data segment may be determined. The terminal device may determine the time-frequency resource of the second data segment according to the time-frequency resource of the first data segment, the time-domain offset of the second data segment with respect to the first data segment, and the frequency-domain offset of the second data segment with respect to the first data segment.

For example, the access network device determines that the number of data segments into which the transport block needs to be divided is 3, and the time-frequency resources allocated by the access network device for the data segments 1 to 3 are as shown in fig. 12. As shown in fig. 12, the time domain resources and the frequency domain resources of data segment 1, data segment 2, and data segment 3 are different. The time domain offset between data segment 1 and data segment 2 is 2 symbols. The time domain offset between data segment 2 and data segment 3 is 3 symbols. The frequency domain offset between data segment 1 and data segment 2 is 30 khz. The frequency domain offset between data segment 2 and data segment 3 is 50 khz. That is, the time domain offset between data segment 1 and data segment 2 is not equal to the time domain offset between data segment 2 and data segment 3. The frequency domain offset between data segment 1 and data segment 2 is not equal to the frequency domain offset between data segment 2 and data segment 3.

As shown in table 3 below, both the access network device and the terminal device store mapping relationships between the scheduling mode number and the MCS information, the time domain offset of each second data segment with respect to the first data segment, and the frequency domain offset of each second data segment with respect to the first data segment. As shown in fig. 12, data segment 2 has a time domain offset of 2 symbols with respect to data segment 1, data segment 3 has a time domain offset of 5 symbols with respect to data segment 1, data segment 2 has a frequency domain offset of 30khz with respect to data segment 1, and data segment 3 has a frequency domain offset of 70khz with respect to data segment 1. If the modulation order is 2, the target code rate is 308, and the spectral efficiency is 0.6016, the first information sent by the access network device to the terminal device includes the number of data segments (i.e. 3) to be divided by the transport block, the time-frequency resource of the data segment 1, and the scheduling mode number 1. After receiving the first information from the access network device, the terminal device obtains MCS information corresponding to the scheduling mode number 1, a time domain offset of the data segment 2 relative to the data segment 1, a time domain offset of the data segment 3 relative to the data segment 1, a frequency domain offset of the data segment 2 relative to the data segment 1, and a frequency domain offset of the data segment 3 relative to the data segment 1 according to the mapping relationship in table 3. And the terminal equipment determines the time-frequency resource of the data segment 2 according to the time-frequency resource of the data segment 1, the time domain offset of the data segment 2 relative to the data segment 1 and the frequency domain offset of the data segment 2 relative to the data segment 1. And the terminal equipment determines the time-frequency resource of the data segment 3 according to the time-frequency resource of the data segment 1, the time domain offset of the data segment 3 relative to the data segment 1 and the frequency domain offset of the data segment 3 relative to the data segment 1.

TABLE 3

Of course, a plurality of mapping tables having mapping relationships between the scheduling mode numbers and the MCS information, the time domain offset of each second data segment with respect to the first data segment, and the frequency domain offset of each second data segment with respect to the first data segment may be stored in the terminal device and the access network device. The number of data segments to be divided by different transmission blocks corresponds to different mapping relation tables. For a specific implementation principle of the mapping relationship table corresponding to different numbers of data segments to be divided by different transmission blocks, reference may be made to the corresponding description in the above-mentioned manner two, which is not described herein again.

Alternatively, the terminal device and the access network device may store a mapping relationship table having mapping relationships between the scheduling mode number and the MCS information, the time domain offset of each second data segment with respect to the first data segment, and the frequency domain offset of each second data segment with respect to the first data segment, where the mapping relationship table is a general table. For a specific implementation principle of the summary table, reference may be made to the corresponding description in the above-mentioned mode two, which is not described herein again.

Based on the third mode, the access network device does not directly notify the time-frequency resource of each data segment, and only needs to send the time-frequency resource of the first data segment and the scheduling mode number, the terminal device can determine the time-frequency resource of each data segment, which is beneficial to saving transmission bits.

1003. The access network equipment segments the transmission block to obtain a plurality of data segments of the transmission block.

In the embodiment of the present application, step 1001 may be performed before step 1003, or step 1001 may be performed after step 1003. After the access network equipment determines the number of data segments of the transmission block to be divided, the access network equipment segments the transmission block to obtain a plurality of data segments of the transmission block. For example, the access network device determines in advance that the number of data segments divided for the transport block is 3. After the access network device sends the first information, the transmission block is divided to obtain 3 data segments of the transmission block. Or, the access network device divides the transmission block to obtain 3 data segments of the transmission block, and then sends the first information to the terminal device.

1004. The access network device sends the plurality of data segments to the terminal device.

In the embodiment of the present application, after obtaining the plurality of data segments of the transport block, the access network device specifically sends each data segment on the pre-allocated time-frequency resource of each data segment. The time domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the time domain is discontinuous, and/or the frequency domain resources of different data segments in the plurality of data segments are different, and the distribution of the plurality of data segments in the frequency domain is discontinuous.

Step 1001 is performed before step 1004, that is, the first information is sent first, and then the plurality of data segments are sent.

1005. The terminal device combines the plurality of data segments into a transport block.

In the embodiment of the application, after determining the time-frequency resource of each data segment of the transmission block according to the first information, the terminal device receives the plurality of data segments of the transmission block from the access network device according to the number of the data segments and the time-frequency resource of each data segment of the transmission block. After the terminal device receives the plurality of data segments, the plurality of data segments are combined into a transport block.

For specific implementation of step 1003 and step 1005, refer to the description of step 201 to step 203, which is not described herein again.

It can be seen that, by implementing the method described in fig. 10, the time domain resources of the data segments of the transport block are different and the distribution of the data segments is discontinuous in the time domain, and/or the frequency domain resources of the data segments of the transport block are different and the distribution of the data segments is discontinuous in the frequency domain. Therefore, the terminal device can obtain the time domain diversity gain and/or the frequency domain diversity gain, which is beneficial for the terminal device to successfully decode the transmission block. And the access network equipment can also send first information to the terminal equipment in advance so as to inform the terminal equipment of the number of the data segments to be divided by the transmission block and the time-frequency resources of each data segment of the transmission block, so that the terminal equipment can successfully receive the data segments of the transmission block.

Referring to fig. 13, fig. 13 is a schematic flowchart of another data transmission method according to an embodiment of the present application. In fig. 13, the first device is taken as an access network device, and the second device is taken as a terminal device as an example. The application scenario of fig. 13 is a downlink transmission application scenario of a transport block. As shown in fig. 13, the data transmission method includes the following steps 1301 to 1304, wherein:

1301. the access network equipment sends the first information to the terminal equipment.

The first information comprises the number of data segments divided by the transmission block and the time frequency resource range.

That is, the access network device needs to determine the number of data segments into which the transport block is divided, and determine the time-frequency resource range of each data segment of the transport block. And after determining the number of the data segments and the time-frequency resource range of each data segment of the transmission block, the access network equipment sends first information to the terminal equipment. Optionally, the first information may be Downlink Control Information (DCI), or other information.

As an optional implementation manner, the access network device determines the number of data segments that the transport block needs to be divided into according to the channel quality or transmission delay requirement of the PDSCH. Based on the embodiment, the number of the data segments which need to be divided by the transmission block can be flexibly determined.

1302. The access network equipment segments the transmission block to obtain a plurality of data segments of the transmission block.

Wherein step 1301 may be performed before step 1302, or step 1301 may be performed after step 1302.

1303. And the access network equipment sends the plurality of data segments to the terminal equipment in the time-frequency resource range.

Wherein step 1303 is performed after step 1302 and step 1301.

1304. The terminal device combines the plurality of data segments into a transport block.

Specifically, after receiving the first information, the terminal device receives a plurality of data segments of the transport block from the first device in the time-frequency resource range according to the number of the data segments, that is, the terminal device performs blind detection on the plurality of data segments in the time-frequency resource range. After the terminal device receives the plurality of data segments, the terminal device combines the plurality of data segments into a transport block.

Since a plurality of data segments of a transport block are to be transmitted, if the time-frequency resource of each data segment needs to be notified to the terminal device, the access network device needs to notify the time-frequency resource of each data segment of the terminal device through a lot of bit information. By implementing the method described in fig. 13, the access network device does not need to notify the terminal device of the time-frequency resource of each data segment, and the access network device only needs to notify the terminal device of the time-frequency resource range in which the plurality of data segments of the transport block are located. The terminal device blindly detects the data segments in the time frequency resource range, and then the data segments can be successfully received. Thus, by implementing the method described in fig. 13, it is advantageous to save transmission bits.

Referring to fig. 14, fig. 14 is a schematic flowchart of another data transmission method according to an embodiment of the present application. Fig. 14 illustrates an example in which the first device is a terminal device and the second device is an access network device. The application scenario of fig. 14 is an uplink transmission application scenario of a transport block. As shown in fig. 14, the data transmission method includes the following steps 1401 to 1405, wherein:

1401. the access network equipment sends the first information to the terminal equipment.

That is, the access network device needs to determine the number of data segments divided for the transport block and allocate time-frequency resources to each data segment of the transport block. And after the access network equipment determines the number of the data segments and allocates time-frequency resources to each data segment of the transmission block, the access network equipment sends first information to the terminal equipment. Optionally, the first information may be Downlink Control Information (DCI), or other information.

As an optional implementation manner, the access network device determines the number of data segments that the transport block needs to be divided into according to the channel quality or transmission delay requirement of the PUSCH. Based on the embodiment, the number of the data segments which need to be divided by the transmission block can be flexibly determined.

1402. And the terminal equipment determines the time-frequency resource of each data segment of the transmission block according to the first information.

In the embodiment of the application, after receiving the first information from the access network device, the terminal device determines the time-frequency resource of each data segment of the transport block according to the first information.

Based on the first mode, the access network device does not directly notify the video resource of each data segment, and only needs to send the time-frequency resource of the first data segment, the first time domain offset and the first frequency domain offset, the terminal device can determine the time-frequency resource of each data segment, which is beneficial to saving transmission bits.

Based on the second mode, the access network device does not directly notify the video resource of each data segment, and only needs to send the time-frequency resource and the scheduling mode number of the first data segment, the terminal device can determine the time-frequency resource of each data segment, which is beneficial to saving transmission bits.

The specific implementation principle of the three ways of the time-frequency resource of each data segment of the access network device indication terminal device transmission block in the embodiment corresponding to fig. 14 is the same as the specific implementation principle of the three ways of the time-frequency resource of each data segment of the access network device indication terminal device transmission block in the embodiment corresponding to fig. 10, and is not described here again by way of example.

Based on the third mode, the access network device does not directly notify the video resource of each data segment, and only needs to send the time-frequency resource and the scheduling mode number of the first data segment, the terminal device can determine the time-frequency resource of each data segment, which is beneficial to saving transmission bits.

1403. And the terminal equipment segments the transmission block according to the number of the data segments carried by the first information to obtain a plurality of data segments of the transmission block.

In the embodiment of the application, after receiving the first information from the access network device, the terminal device segments the transmission block according to the number of data segments carried by the first information, so as to obtain a plurality of data segments of the transmission block.

Wherein step 1402 may be performed before step 1403, or step 1402 may be performed after step 1403.

1404. And the terminal equipment sends the plurality of data segments to the access network equipment according to the determined time-frequency resources of the data segments.

Wherein step 1404 is performed after step 1402 and step 1403.

1405. The access network device combines the plurality of data segments into a transport block.

In this embodiment, after receiving the plurality of data segments from the terminal device, the access network device synthesizes the plurality of data segments into a transport block.

It can be seen that, by implementing the method described in fig. 14, the time domain resources of the data segments of the transport block are different and the distribution of the data segments is discontinuous in the time domain, and/or the frequency domain resources of the data segments of the transport block are different and the distribution of the data segments is discontinuous in the frequency domain. Therefore, the access network device can obtain the time domain diversity gain and/or the frequency domain diversity gain, which is beneficial for the access network device to successfully decode the transmission block. And the access network equipment can also send first information to the terminal equipment in advance to inform the terminal equipment of the number of data segments to be divided by the transmission block and the time-frequency resources of each data segment of the transmission block, so that the terminal equipment can divide the data segments of the transmission block according to the number of the data segments and send the data segments according to the time-frequency resources of each data segment of the transmission block.

Referring to fig. 15, fig. 15 is a schematic flowchart of another data transmission method according to an embodiment of the present application. Fig. 15 illustrates an example in which the first device is a terminal device and the second device is an access network device. The application scenario of fig. 15 is an uplink transmission application scenario of a transport block. As shown in fig. 15, the data transmission method includes the following steps 1501 to 1504:

1501. the access network equipment sends the first information to the terminal equipment.

That is, the access network device needs to determine the number of data segments divided for the transport block and allocate a time-frequency resource range for each data segment of the transport block. And after the access network equipment determines the number of the data segments and allocates a time-frequency resource range for each data segment of the transmission block, the access network equipment sends first information to the terminal equipment. Optionally, the first information may be Downlink Control Information (DCI), or other information.

1502. And the terminal equipment segments the transmission block according to the number of the data segments to obtain a plurality of data segments of the transmission block.

In the embodiment of the application, after receiving the first information from the access network device, the terminal device segments the transmission block according to the number of the data segments to obtain a plurality of data segments of the transmission block.

1503. And the terminal equipment sends the plurality of data segments to the access network equipment in the time-frequency resource range.

1504. The access network device combines the plurality of data segments into a transport block.

In the embodiment of the application, the access network device receives the multiple data segments of the transmission block from the terminal device in the time-frequency resource range according to the number of the data segments, that is, the access network device performs blind detection on the multiple data segments in the time-frequency resource range. After the access network device receives the plurality of data segments, the access network device combines the plurality of data segments into a transport block.

By implementing the method described in fig. 15, it is advantageous to save bit information.

Referring to fig. 16, fig. 16 is a schematic flowchart of another data transmission method according to an embodiment of the present application. As shown in fig. 16, the data transmission method includes the following steps 1601 to 1603, wherein:

1601. the first device obtains a transport block to be transmitted.

The first device may be an access network device or a terminal device. And when the first equipment is access network equipment, the second equipment is terminal equipment. And when the first equipment is terminal equipment, the second equipment is access network equipment. When the first device is an access network device and the second device is a terminal device, the transmission block is a transmission block for downlink transmission. When the first device is a terminal device and the second device is an access network device, the transmission block is a transmission block for uplink transmission.

1602. The first device sends the transport block multiple copies to the second device.

In the embodiment of the application, after the first device obtains the transport block to be sent, the first device sends multiple copies of the same transport block to the second device. For example, if the transport block to be sent is transport block 1, the first device sends multiple transport blocks 1 to the second device.

The time domain resources of each transmission block are different, and the distribution of a plurality of transmission blocks in the time domain is discontinuous, and/or the frequency domain resources of each transmission block are different, and the distribution of a plurality of transmission blocks in the frequency domain is discontinuous.

For example, the time domain resources of each transport block are different, and the distribution of the transport blocks in the time domain is not continuous. Assume that the first device sends 3 transport blocks 1 to the second device. The discontinuous distribution of the multiple transport blocks in the time domain may mean that the multiple transport blocks are completely discontinuous in the time domain. As shown in fig. 17, the time domain resources of the 3 parts of transport block 1 are different, and the 3 parts of transport block 1 are completely discontinuous in the time domain. Alternatively, that the distribution of the multiple transport blocks is discontinuous in the time domain may mean that the multiple transport blocks are discontinuous in the time domain portion. As shown in fig. 18, the time domain resources of 3 transport blocks 1 are different, and the time domain resource part of 3 transport blocks 1 is discontinuous.

For example, the frequency domain resources of each transport block are different, and the distribution of the transport blocks in the frequency domain is not continuous. Assume that the first device sends 3 transport blocks 1 to the second device. The discontinuous distribution of the multiple transport blocks in the frequency domain may mean that the multiple transport blocks are completely discontinuous in the frequency domain. As shown in fig. 19, the frequency domain resources of the 3 parts transport block 1 are not the same, and the 3 parts transport block 1 is completely discontinuous in the frequency domain. Alternatively, that the distribution of the multiple transport blocks is discontinuous in the frequency domain may mean that the multiple transport blocks are discontinuous in the frequency domain portion. As shown in fig. 20, the frequency domain resources of the 3 parts transport block 1 are not the same, and the 3 parts transport block 1 is not continuous in the frequency domain portion.

For example, the time domain resources of each transport block are different, the distribution of multiple transport blocks in the time domain is discontinuous, the frequency domain resources of each transport block are different, and the distribution of multiple transport blocks in the frequency domain is discontinuous. Assume that the first device sends 3 transport blocks 1 to the second device. As shown in fig. 21, the time domain resources of 3 parts of transport block 1 are different, and the frequency domain resources of 3 parts of transport block 1 are different. The 3 transport blocks 1 are not contiguous in both the time and frequency domains. The discontinuous distribution of the multiple transport blocks in the time domain may refer to complete discontinuity of the multiple transport blocks in the time domain, or partial discontinuity of the multiple transport blocks in the time domain. The discontinuous distribution of the multiple transport blocks in the frequency domain may refer to that the multiple transport blocks are completely discontinuous in the frequency domain, or that the multiple transport blocks are partially discontinuous in the frequency domain. Fig. 21 illustrates an example where multiple transport blocks are completely discontinuous in the time and frequency domains.

1603. The second device combines the multiple transport blocks.

In this embodiment of the present application, after receiving multiple copies of the same transport block from the first device, the second device merges the multiple copies of the transport block. Optionally, the second device performs merging once every time it receives one transport block. For example, after the second device receives the first copy of transport blocks 1, the first copy of transport blocks 1 is stored. And when the second equipment receives the second transmission block 1, combining the first transmission block 1 and the second transmission block 1. And when the second equipment receives the third transmission block 1, combining the transmission block obtained by uploading and combining with the third transmission block 1. Or, the second device may also perform combining after receiving all the transport blocks of the same transport block sent by the first device. For example, the first device has transmitted 3 transport blocks 1. After the second device receives 3 transport blocks 1, the second device performs combining.

As an optional implementation manner, when the second device successfully decodes the merged transport block, an Acknowledgement (ACK) message is sent to the first device, where the merged transport block is a transport block obtained by merging M received transport blocks, and M is less than or equal to the transmission number N of transport blocks. That is, in this embodiment, the second device does not necessarily have to finish receiving all the transport blocks transmitted by the first device. For example, the first device transmits 4 transport blocks 1. After the second device merges the 3 transport blocks 1 to obtain a merged transport block, if the second device can successfully decode the merged transport block, the second device may not receive the 4 th transport block 1. Based on the embodiment, the transmission block can be decoded quickly and accurately.

It can be seen that, by implementing the method described in fig. 16, the time domain resources of the multiple transport blocks are different and the distribution of the multiple transport blocks in the time domain is discontinuous, and/or the frequency domain resources of the multiple transport blocks are different and the distribution of the multiple transport blocks in the frequency domain is discontinuous. Therefore, the second device can obtain the time domain diversity gain and/or the frequency domain diversity gain, which is beneficial for the second device to successfully decode the transmission block.

Referring to fig. 22, fig. 22 is a schematic flowchart of a data transmission method according to an embodiment of the present application. In fig. 22, the first device is an access network device, and the second device is a terminal device. The application scenario of fig. 22 is a downlink transmission application scenario of a transport block. As shown in FIG. 22, the data transmission method includes the following steps 2201-2205, wherein:

2201. the access network equipment sends the first information to the terminal equipment.

The first information includes the number of transmission blocks, and the first information is further used for the second device to determine the time-frequency resource of each transmission block.

That is, the access network device needs to determine the number of transmission copies of a transport block and determine the time-frequency resources allocated per transport block. And after determining the sending number and the time-frequency resource of each transmission block, the access network equipment sends first information to the terminal equipment. Optionally, the first information may be Downlink Control Information (DCI), or other information.

As an optional implementation manner, the first device determines the number of transmission copies of the transport block according to the channel quality of the PDSCH. Based on this embodiment, the number of transmission copies of a transport block can be flexibly determined. For example, if the channel quality of the PDSCH is good, the number of transmission copies of the transport block may be small. If the channel quality of the PDSCH is poor, the number of transmission parts of the transmission block can be more, and the more the number of transmission parts of the transmission block is, the more the time domain diversity gain and/or the frequency domain diversity gain are obtained, so that the failure rate of the receiving end on data decoding is favorably reduced.

2202. And the terminal equipment determines the time-frequency resource of each transmission block according to the first information.

In the embodiment of the application, after receiving the first information from the access network device, the terminal device determines the time-frequency resource of each transport block according to the first information.

The access network device may indicate the time-frequency resource of each transport block of the terminal device in the following manners.

The first method is as follows: any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between the transmission blocks sent twice in an adjacent mode, the first frequency domain offset is a frequency domain offset between the transmission blocks sent twice in the adjacent mode, and the first information further comprises time-frequency resources of the transmission blocks sent for the first time, the first time domain offsets and the first frequency domain offsets.

Correspondingly, the terminal device may determine the time-frequency resource of the transport block sent for the second time according to the time-frequency resource of the transport block sent for the first time, the first time domain offset, and the first frequency domain offset. And the terminal equipment can determine the time-frequency resource of the transmission block sent for the third time according to the time-frequency resource of the transmission block sent for the second time, the first time domain offset and the first frequency domain offset. And by analogy, the time-frequency resource of the next transport block can be determined according to the time-frequency resource of the previous transport block, the first time domain offset and the first frequency domain offset.

The first mode implementation principle is similar to the first mode implementation principle in the embodiment described in fig. 10, and is not illustrated here.

Based on the first mode, the access network device does not directly notify the time-frequency resource of each transport block, and only needs to send the time-frequency resource of the transport block sent for the first time, the first time domain offset and the first frequency domain offset, the terminal device can determine the time-frequency resource of each transport block, which is beneficial to saving transmission bits.

The second method comprises the following steps: the first information also comprises time-frequency resources of the first transmission block and a scheduling mode number, the scheduling mode number has a mapping relation with the time domain offset of each second transmission block relative to the first transmission block and the frequency domain offset of each second transmission block relative to the first transmission block, the first transmission block is the transmission block sent for the first time, and the second transmission blocks are the transmission blocks sent except the first transmission block.

Correspondingly, the terminal device stores the mapping relationship between the scheduling mode number and the time domain offset of each second transport block relative to the first transport block and the frequency domain offset of each second transport block relative to the first transport block. After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the time domain offset of each second transport block relative to the first transport block and the frequency domain offset of each second transport block relative to the first transport block can be determined. The terminal device may determine the time-frequency resource of the second transport block according to the time-frequency resource of the first transport block, the time-domain offset of the second transport block with respect to the first transport block, and the frequency-domain offset of the second transport block with respect to the first transport block. For example, if the access network device sends 3 transport blocks 1 to the terminal device, the first transport block 1 is the first transport block. The second transport block 1 and the third transport block 1 are second transport blocks.

Of course, a plurality of mapping tables may be stored in the terminal device and the access network device. The transmission numbers of the different transmission blocks correspond to different mapping relation tables. Alternatively, only one mapping relation table may be stored in the terminal device and the access network device.

The implementation principle of the second mode is similar to that of the second mode in the embodiment described in fig. 10, and is not illustrated here.

Based on the second mode, the access network device does not directly notify the time-frequency resource of each transport block, and only needs to send the time-frequency resource of the first transport block and the scheduling mode number, the terminal device can determine the time-frequency resource of each transport block, which is beneficial to saving transmission bits.

The third method comprises the following steps: the first information also comprises time-frequency resources of the first transmission block and a scheduling mode number, the scheduling mode number and MCS information, the time domain offset of each second transmission block relative to the first transmission block and the frequency domain offset of each second transmission block relative to the first transmission block have a mapping relation, the first transmission block is the transmission block sent for the first time, and the second transmission block is the transmission block sent except the first transmission block.

Correspondingly, the terminal device stores the mapping relationship between the scheduling mode number and the MCS information, the time domain offset of each second transport block relative to the first transport block, and the frequency domain offset of each second transport block relative to the first transport block. After the terminal device receives the first information, according to the scheduling mode number in the first information and the mapping relationship stored in the terminal device, the MCS information, the time domain offset of each second transport block relative to the first transport block, and the frequency domain offset of each second transport block relative to the first transport block may be determined. The terminal device may determine the time-frequency resource of the second transport block according to the time-frequency resource of the first transport block, the time-domain offset of the second transport block with respect to the first transport block, and the frequency-domain offset of the second transport block with respect to the first transport block.

The third implementation principle is similar to that in the embodiment described in fig. 10, and is not illustrated here.

Based on the third mode, the access network device does not directly notify the time-frequency resource of each transport block, and only needs to send the time-frequency resource of the first transport block and the scheduling mode number, the terminal device can determine the time-frequency resource of each transport block, which is beneficial to saving transmission bits.

2203. The access network equipment acquires a transmission block to be sent.

Here, step 2203 may be performed before step 2201, or step 2203 may be performed after step 2201.

2204. And the access network equipment sends the transmission block multiple copies to the terminal equipment according to the sending copies and the time-frequency resource of each transmission block.

Wherein step 2204 is performed after step 2203 and step 2201.

2205. And the terminal equipment combines the multiple transmission blocks.

In the embodiment of the application, after the terminal device determines the time-frequency resource of each transport block according to the first information, the terminal device receives multiple copies of the same transport block from the first device according to the number of transmission copies and the time-frequency resource of each transport block. After the terminal equipment receives the multiple transmission blocks, the terminal equipment combines the multiple transmission blocks.

It can be seen that by implementing the method described in fig. 22, the terminal device can obtain the time domain diversity gain and/or the frequency domain diversity gain, which is beneficial for the terminal device to successfully decode the transport block. And the access network equipment can also send first information to the terminal equipment in advance to inform the terminal equipment of the sending number of transmission blocks and the time-frequency resource of each transmission block, so that the terminal equipment can successfully receive the transmission blocks.

Referring to fig. 23, fig. 23 is a schematic flowchart of another data transmission method according to an embodiment of the present application. In fig. 23, the first device is taken as an access network device, and the second device is taken as a terminal device as an example. The application scenario of fig. 23 is a downlink transmission application scenario of a transport block. As shown in fig. 23, the data transmission method includes the following steps 2301 to 2304, wherein:

2301. the access network equipment sends the first information to the terminal equipment.

Wherein, the first information comprises the sending number of the transmission blocks and the time frequency resource range.

That is, the access network device needs to determine the number of transmission copies of a transport block and determine the time-frequency resources of each transport block. And after determining the sending number and the time-frequency resource of each transmission block, the access network equipment sends first information to the terminal equipment. Optionally, the first information may be Downlink Control Information (DCI), or other information.

2302. The access network equipment acquires a transmission block to be sent.

Wherein step 2302 can be performed before step 2201, or step 2302 can be performed after step 2201.

2303. And the first equipment sends the transmission block multiple copies to the second equipment in the time-frequency resource range according to the sending copies.

Wherein step 2203 is performed after step 2201 and step 2202. The time domain resources of each transmission block are different, and the distribution of a plurality of transmission blocks in the time domain is discontinuous, and/or the frequency domain resources of each transmission block are different, and the distribution of a plurality of transmission blocks in the frequency domain is discontinuous.

2304. And the terminal equipment combines the multiple transmission blocks.

In the embodiment of the present application, after receiving the first information from the access network device, the terminal device receives multiple copies of the same transport block from the first device in the time-frequency resource range according to the number of sent copies, that is, the terminal device performs blind detection on the transport block in the time-frequency resource range. After the terminal equipment receives the multiple transmission blocks, the terminal equipment combines the multiple transmission blocks.

By implementing the method described in fig. 23, it is advantageous to save bit information.

Referring to fig. 24, fig. 24 is a schematic flowchart of another data transmission method according to an embodiment of the present application. In fig. 24, the first device is taken as a terminal device, and the second device is taken as an access network device as an example. The application scenario of fig. 24 is an uplink transmission application scenario of a transport block. As shown in fig. 24, the data transmission method includes the following steps 2401 to 2405, wherein:

2401. the access network equipment sends the first information to the terminal equipment.

The first information includes the number of transmission blocks, and the first information is further used for the terminal device to determine the time-frequency resource of each transmission block.

That is, the access network device needs to determine the number of transmission copies of a transport block and the time-frequency resource of each transport block. After determining the transmission number of the transmission blocks and the time-frequency resource of each transmission block, the access network equipment transmits first information to the terminal equipment. Optionally, the first information may be Downlink Control Information (DCI), or other information.

As an optional implementation manner, the access network device determines the number of data segments that the transport block needs to be divided into according to the channel quality of the PUSCH. Based on the embodiment, the number of transmission blocks required to be transmitted can be flexibly determined.

2402. And the terminal equipment determines the time-frequency resource of each transmission block according to the first information.

After the terminal equipment receives the first information from the access network equipment, the terminal equipment determines the time-frequency resource of each transmission block according to the first information.

2403. The terminal equipment acquires a transmission block to be sent.

Wherein step 2402 may be performed before step 2403, or step 2402 may be performed after step 2403.

2404. And the terminal equipment sends the transmission block multiple copies to the second equipment according to the transmission copies of the transmission blocks and the time-frequency resource of each transmission block.

Wherein step 2404 is performed after step 2402 and step 2403.

2405. The access network equipment combines the multiple transmission blocks.

Specifically, after receiving multiple copies of the same transport block from the first device according to the number of transmission copies and the time-frequency resource of each transport block, the access network device merges the multiple transport blocks.

It can be seen that by implementing the method described in fig. 24, the access network device can obtain time domain diversity gain and/or frequency domain diversity gain, which is beneficial for the access network device to successfully decode the transport block. And the access network equipment can also send first information to the terminal equipment in advance to inform the terminal equipment of the number of the transmission blocks to be sent and the time-frequency resource of each transmission block, so that the terminal equipment can send multiple transmission blocks of the same transmission block to the access network equipment according to the number of the transmission blocks to be sent and the time-frequency resource of each transmission block.

Referring to fig. 25, fig. 25 is a schematic flowchart of another data transmission method according to an embodiment of the present application. In fig. 25, the first device is taken as a terminal device, and the second device is taken as an access network device as an example. The application scenario of fig. 25 is an uplink transmission application scenario of a transport block. As shown in fig. 25, the data transmission method includes the following steps 2501 to 2504, wherein:

2501. the access network equipment sends the first information to the terminal equipment.

The first information comprises the sending number of transmission blocks and the time frequency resource range.

As an optional implementation manner, the first device determines the transmission number of the transport blocks according to the channel quality of the PUSCH. Based on this embodiment, the number of transmission copies of a transport block can be flexibly determined. For example, if the channel quality of the PUSCH is good, the number of transmission copies of the transport block may be small. If the channel quality of the PUSCH is poor, the number of transmission parts of the transmission block can be more, and the more the number of transmission parts of the transmission block is, the more the time domain diversity gain and/or the frequency domain diversity gain are obtained, so that the failure rate of the receiving end on decoding the data is reduced.

2502. The terminal equipment acquires a transmission block to be sent.

2503. And the terminal equipment sends the transmission block multiple copies to the access network equipment in the time-frequency resource range according to the sending copies.

In the embodiment of the application, after the terminal device receives the first information from the access network device and acquires the transmission block to be transmitted, the terminal device transmits a plurality of transmission blocks to the access network device according to the transmission number in the time-frequency resource range carried by the first information.

The terminal device may first receive the first information, and then execute step 2502. Or the terminal device may first perform step 2502 and then receive the first information.

2504. The access network equipment combines the multiple transmission blocks.

Specifically, the access network device receives multiple copies of the same transport block from the terminal device in the time-frequency resource range according to the sent copies, that is, the access network device performs blind detection on the transport block in the time-frequency resource range. After receiving the multiple transmission blocks, the access network equipment combines the multiple transmission blocks.

By implementing the method described in fig. 25, it is advantageous to save bit information.

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

Referring to fig. 26, fig. 26 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in fig. 26 may be used to perform some or all of the functions of the first device in the method embodiment described above with respect to fig. 2. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the access network device in the method embodiment described in fig. 10 above. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the access network device in the method embodiment described in fig. 13 above. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in fig. 14 above. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in fig. 15. The communication device shown in fig. 26 may include a processing module 2601 and a communication module 2602. Wherein:

a processing module 2601, configured to segment the transport block to obtain multiple data segments of the transport block; a communication module 2602, configured to send a plurality of data segments to a second device, where time domain resources of different data segments in the plurality of data segments are different and distribution of the plurality of data segments in the time domain is discontinuous, and/or frequency domain resources of different data segments in the plurality of data segments are different and distribution of the plurality of data segments in the frequency domain is discontinuous.

As an alternative implementation, the transport block is a transport block after data interleaving.

As an optional implementation manner, the communication device is an access network device, the second device is a terminal device, and the communication module 2602 is further configured to send, before the communication module 2602 sends a plurality of data segments to the second device, first information to the second device, where the first information includes the number of the data segments that the transport block needs to be divided, and the first information is further used by the second device to determine time-frequency resources of each data segment of the transport block.

As an optional implementation manner, the communication device is a terminal device, the second device is an access network device, and the communication module 2602 is further configured to receive first information from the second device before the processing module 2601 segments the transport block to obtain multiple data segments of the transport block, where the first information includes the number of the data segments that the transport block needs to be divided, and the first information is further used by the communication device to determine time-frequency resources of each data segment of the transport block; the processing module 2601 is further configured to determine, according to the first information, a time-frequency resource of each data segment of the transport block; the processing module 2601 segments the transmission block to obtain a plurality of data segments of the transmission block specifically: the processing module 2601 segments the transmission block according to the number of data segments to obtain a plurality of data segments of the transmission block; the communication module 2602 transmits a plurality of data segments to the second device, including: the communication module 2602 transmits the plurality of data segments to the second device according to the time-frequency resources of the respective data segments of the transport block.

As an optional implementation manner, any two first time domain offsets are the same, and any two first frequency domain offsets are the same, where the first time domain offset is a time domain offset between two adjacent data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent data segments of the transport block, the first information further includes a time-frequency resource of the first data segment, the first time domain offset, and the first frequency domain offset, and the first data segment is a first data segment sent by the transport block.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent data segments of a transport block, the first frequency domain offset is a frequency domain offset between two adjacent data segments of the transport block, the first information further includes a time-frequency resource of the first data segment and a scheduling manner number, the scheduling manner number has a mapping relationship with a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment, the first data segment is a first data segment sent by the transport block, and the second data segment is a data segment of the transport block except the first data segment.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of a transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource and a scheduling mode number of the first data segment, the scheduling mode number and modulation coding scheme MCS information, the time domain offset of each second data segment relative to the first data segment and the frequency domain offset of each second data segment relative to the first data segment have a mapping relation, the first data segment is a first sent data segment of the transport block, and the second data segment is a data segment of the transport block except the first data segment.

As an optional implementation manner, the communication device is an access network device, the second device is a terminal device, and the communication module 2602 is further configured to send first information to the second device before sending the plurality of data segments to the second device, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range; the communication module 2602 sends the plurality of data segments to the second device specifically includes: the communication module 2602 transmits the plurality of data segments to the second device over a range of time-frequency resources.

As an optional implementation manner, the processing module 2601 is further configured to determine, according to the channel quality or the transmission delay requirement of the PDSCH, the number of data segments that the transport block needs to be divided into.

As an optional implementation manner, the communication device is a terminal device, the second device is an access network device, and the communication module 2602 is further configured to receive first information from the second device before the processing module 2601 segments the transport block to obtain multiple data segments of the transport block, where the first information includes the number of data segments and the time-frequency resource range partitioned by the transport block; the way of the processing module 2601 segmenting the transport block specifically is: the processing module 2601 segments the transport block according to the number of data segments; the communication module 2602 sends the plurality of data segments to the second device specifically includes: the communication module 2602 transmits the plurality of data segments to the second device over a range of time-frequency resources.

Referring to fig. 26, fig. 26 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in fig. 26 may be used to perform some or all of the functions of the second device in the method embodiment described above in fig. 2. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in fig. 10 above. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in fig. 13. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the access network device in the method embodiment described in fig. 14 above. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the access network device in the method embodiment described in fig. 15. The communication device shown in fig. 26 may include a processing module 2601 and a communication module 2602. Wherein:

a communication module 2602, configured to receive a plurality of data segments of a transport block from a first device, where time domain resources of different data segments of the plurality of data segments are different and distribution of the plurality of data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments of the plurality of data segments are different and distribution of the plurality of data segments in a frequency domain is discontinuous; a processing module 2601 is configured to combine the plurality of data segments into a transport block.

As an optional implementation, the first device is an access network device, the communication device is a terminal device, and the communication module 2602 is further configured to receive first information from the first device before receiving the multiple data segments of the transport block from the first device, where the first information includes the number of the data segments that the transport block needs to be divided, and the first information is further used for the communication device to determine time-frequency resources of each data segment of the transport block;

the processing module 2601 is further configured to determine, according to the first information, a time-frequency resource of each data segment of the transport block; the communication module 2602 receives the plurality of data segments of the transport block from the first device in a specific manner: the communication module 2602 receives a plurality of data segments of the transport block from the first device according to the number of data segments and the time-frequency resources of each data segment of the transport block.

As an optional implementation manner, the first device is a terminal device, the communication device is an access network device, and the communication module 2602 is further configured to send, to the second device, first information before receiving the multiple data segments of the transport block from the first device, where the first information includes the number of the data segments that the transport block needs to be divided, and the first information is further used by the first device to determine time-frequency resources of each data segment of the transport block.

As an optional implementation manner, any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent data segments of the transport block, the first information further includes a time-frequency resource of the first data segment, the first time domain offset, and the first frequency domain offset, and the first data segment is a first data segment sent by the transport block.

As an optional implementation manner, the first device is an access network device, the communication device is a terminal device, and the communication module 2602 is further configured to receive first information from the first device before receiving the multiple data segments of the transport block from the first device, where the first information includes a number of data segments divided by the transport block and a time-frequency resource range; the communication module 2602 receives the plurality of data segments of the transport block from the first device in a specific manner: the communication module 2602 receives a plurality of data segments of a transport block from the first device over a range of time-frequency resources according to a number of the data segments.

As an optional implementation manner, the first device is a terminal device, the communication device is an access network device, and the communication module 2602 is further configured to send first information to the second device before receiving the multiple data segments of the transport block from the first device, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range; the communication module 2602 receives the plurality of data segments of the transport block from the first device in a specific manner: the communication module 2602 receives a plurality of data segments of a transport block from the first device over a range of time-frequency resources according to a number of the data segments.

As an optional implementation manner, the processing module 2601 is further configured to determine, according to the channel quality or the transmission delay requirement of the physical uplink shared channel PUSCH, the number of data segments that the transport block needs to be divided into.

Referring to fig. 26, fig. 26 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in fig. 26 may be used to perform some or all of the functions of the first device in the method embodiment described above with respect to fig. 16. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the access network device in the method embodiment described in fig. 22. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the access network device in the method embodiment described in fig. 23. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in fig. 24 above. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in fig. 25 above. The communication device shown in fig. 26 may include a processing module 2601 and a communication module 2602. Wherein:

a processing module 2601, configured to obtain a transmission block to be sent; a communication module 2602, configured to send multiple copies of a transport block to a second device, where time domain resources of each transport block are different and distribution of the multiple transport blocks in the time domain is discontinuous, and/or frequency domain resources of each transport block are different and distribution of the multiple transport blocks in the frequency domain is discontinuous.

As an optional implementation manner, the communication device is an access network device, the second device is a terminal device, and the communication module 2602 is further configured to send first information to the second device before sending multiple copies of a transport block to the second device, where the first information includes the number of sent copies of the transport block, and the first information is further used by the second device to determine a time-frequency resource of each transport block; the manner of sending the multiple transmission blocks to the second device by the communication module 2602 is specifically: the communication module 2602 sends the transport block multiple copies to the second device according to the number of transmission copies and the time-frequency resource of each transport block.

As an optional implementation manner, the communication device is a terminal device, the second device is an access network device, and the communication module 2602 is further configured to receive first information from the second device before sending multiple copies of a transport block to the second device, where the first information includes the number of sent copies of the transport block, and the first information is further used for the communication device to determine a time-frequency resource of each transport block; the processing module 2601 is further configured to determine a time-frequency resource of each transport block according to the first information; the manner of sending the multiple transmission blocks to the second device by the communication module 2602 is specifically: the communication module 2602 sends the transmission block multiple copies to the second device according to the transmission number of the transmission blocks and the time-frequency resource of each transmission block.

As an optional implementation manner, any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent transmitted transport blocks, the first frequency domain offset is a frequency domain offset between two adjacent transmitted transport blocks, and the first information further includes a time-frequency resource of the first transmitted transport block, the first time domain offset, and the first frequency domain offset.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted transport blocks, the first frequency domain offset is a frequency domain offset between two adjacent transmitted transport blocks, the first information further includes a time-frequency resource of the first transport block and a scheduling manner number, the scheduling manner number has a mapping relationship with a time domain offset of each second transport block relative to the first transport block and a frequency domain offset of each second transport block relative to the first transport block, the first transport block is a first transmitted transport block, and the second transport block is a transport block transmitted except the first transport block.

As an optional implementation manner, at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted transport blocks, the first frequency domain offset is a frequency domain offset between two adjacent transmitted transport blocks, the first information further includes a time-frequency resource and a scheduling mode number of the first transport block, the scheduling mode number and modulation and coding scheme MCS information, a time domain offset of each second transport block with respect to the first transport block, and a frequency domain offset of each second transport block with respect to the first transport block have a mapping relationship, the first transport block is a first transmitted transport block, and the second transport block is a transport block transmitted except the first transport block.

As an optional implementation manner, the communication device is an access network device, the second device is a terminal device, and the communication module 2602 is further configured to send first information to the second device before sending the multiple copies of the transport block to the second device, where the first information includes the sending copies of the transport block and a time-frequency resource range; the manner of sending the multiple transmission blocks to the second device by the communication module 2602 is specifically: the communication module 2602 sends the transmission block multiple copies to the second device in the time-frequency resource range according to the sending copy number.

As an optional implementation manner, the processing module 2601 is further configured to determine, before the communication module 2602 sends the first information to the second device, the number of transmission copies of the transport block according to the channel quality of the PDSCH.

As an optional implementation manner, the communication device is a terminal device, the second device is an access network device, and the communication module 2602 is further configured to receive first information from the second device before the transmission block is sent to the second device for multiple times, where the first information includes the number of transmission copies of the transmission block and a time-frequency resource range; the manner of sending the multiple transmission blocks to the second device by the communication module 2602 is specifically: the communication module 2602 sends the transmission block multiple copies to the second device in the time-frequency resource range according to the sending copy number.

Referring to fig. 26, fig. 26 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in fig. 26 may be used to perform some or all of the functions of the second device in the method embodiment described above with respect to fig. 16. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in fig. 22. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the terminal device in the method embodiment described in fig. 23. Alternatively, the communication device shown in fig. 26 may be used to perform some or all of the functions of the access network device in the method embodiment described in fig. 24 above. Alternatively, the communication device shown in fig. 26 may be used to perform part or all of the functions of the access network device in the method embodiment described in fig. 25 above. The communication device shown in fig. 26 may include a processing module 2601 and a communication module 2602. Wherein:

a communication module 2602, configured to receive multiple copies of the same transport block from a first device, where time domain resources of each transport block are different and distribution of the multiple transport blocks in the time domain is discontinuous, and/or frequency domain resources of each transport block are different and distribution of the multiple transport blocks in the frequency domain is discontinuous; a processing module 2601 is configured to combine multiple transport blocks.

As an optional implementation, the first device is an access network device, the communication device is a terminal device, and the communication module 2602 is further configured to receive first information from the first device before receiving multiple copies of the same transport block from the first device, where the first information includes the number of transmission copies of the transport block, and the first information is further used for the communication device to determine time-frequency resources of each transport block; the processing module 2601 is further configured to determine a time-frequency resource of each transport block according to the first information; the manner of the communication module 2602 receiving multiple copies of the same transport block from the first device is specifically: the communication module 2602 receives multiple copies of the same transport block from the first device according to the number of transmissions and the time-frequency resources of each transport block.

As an optional implementation manner, the first device is a terminal device, the communication device is an access network device, and the communication module 2602 is further configured to send, to the first device, first information before receiving multiple copies of the same transport block from the first device, where the first information includes the number of sent copies of the transport block, and the first information is further used by the first device to determine a time-frequency resource of each transport block; the manner of the communication module 2602 receiving multiple copies of the same transport block from the first device is specifically: the communication module 2602 receives multiple copies of the same transport block from the first device according to the number of transmissions and the time-frequency resources of each transport block.

As an optional implementation manner, the first device is an access network device, the communication device is a terminal device, and the communication module 2602 is further configured to receive first information from the first device before receiving multiple copies of the same transport block from the first device, where the first information includes the number of transmission copies of the transport block and a time-frequency resource range; the manner of the communication module 2602 receiving multiple copies of the same transport block from the first device is specifically: the communication module 2602 receives multiple copies of the same transport block from the first device over the range of time-frequency resources according to the number of transmitted copies.

As an optional implementation manner, the first device is a terminal device, the communication device is an access network device, and the communication module 2602 is further configured to send first information to the first device before receiving multiple copies of the same transport block from the first device, where the first information includes the number of sent copies of the transport block and a time-frequency resource range; the manner of the communication module 2602 receiving multiple copies of the same transport block from the first device is specifically: the communication module 2602 receives multiple copies of the same transport block from the first device over the range of time-frequency resources according to the number of transmitted copies.

As an optional implementation manner, the processing module 2601 is further configured to determine, before the communication module 2602 sends the first information to the first device, the transmission number of the transport blocks according to the channel quality of the physical uplink shared channel, PUSCH.

As an optional implementation manner, the communication module 2602 is further configured to send an ACK message to the first device when the processing module 2601 successfully decodes the merged transport block, where the merged transport block is a transport block obtained by merging M received transport blocks, and M is less than or equal to the transmission copy number N of the transport block.

Referring to fig. 27, fig. 27 is a schematic structural diagram of a communication device disclosed in the embodiment of the present application. As shown in fig. 27, the communication device includes a processor 2701, a memory 2702, and a communication interface 2703. Processor 2701, memory 2702, and communication interface 2703 are connected.

The processor 2701 may be a Central Processing Unit (CPU), a general purpose processor, a coprocessor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), other programmable logic devices (programmable gate arrays), transistor logic devices (FPGAs), hardware components, or any combination thereof. The processor 2701 may also be a combination of computing functionality, e.g., comprising one or more microprocessors, a combination of DSPs and microprocessors, or the like.

The communication interface 2703 is used for implementing communication with other devices.

The processor 2701 calls the program code stored in the memory 2702 to execute the steps executed by the first device or the second device in the above method embodiments.

Based on the same inventive concept, the principle of solving the problem of the communication device provided in the embodiment of the present application is similar to the principle of solving the problem of the first device or the second device in the embodiment of the method of the present application, so that the implementation of each device may refer to the implementation of the method, and is not described herein again for brevity.

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

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of data transmission, the method comprising:

the method comprises the steps that first equipment segments a transmission block to obtain a plurality of data segments of the transmission block;

the first device sends the data segments to a second device, wherein time domain resources of different data segments in the data segments are different, and distribution of the data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments in the data segments are different, and distribution of the data segments in a frequency domain is discontinuous.

2. The method of claim 1, wherein the transport block is a data interleaved transport block.

3. The method of claim 1 or 2, wherein the first device is an access network device, the second device is a terminal device, and before the first device sends the plurality of data segments to the second device, the method further comprises:

the first device sends first information to the second device, where the first information includes the number of data segments that the transport block needs to be divided, and the first information is also used for the second device to determine time-frequency resources of each data segment of the transport block.

4. The method according to claim 1 or 2, wherein the first device is a terminal device, the second device is an access network device, and before the first device segments the transport block and obtains the plurality of data segments of the transport block, the method further comprises:

the first device receives first information from the second device, where the first information includes the number of data segments that the transmission block needs to be divided into, and the first information is also used for the first device to determine time-frequency resources of each data segment of the transmission block;

the first equipment determines the time-frequency resource of each data segment of the transmission block according to the first information;

the first device segments a transport block to obtain a plurality of data segments of the transport block, and includes:

the first equipment segments the transmission block according to the number of the data segments to obtain a plurality of data segments of the transmission block;

the first device sending the plurality of data segments to a second device, comprising:

and the first equipment sends the data segments to the second equipment according to the time-frequency resources of the data segments of the transmission block.

5. The method according to claim 3 or 4, wherein any two first time domain offsets are the same, and any two first frequency domain offsets are the same, where the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment, the first time domain offset, and the first frequency domain offset, and the first data segment is a first transmitted data segment of the transport block.

6. The method of claim 3 or 4, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment and a scheduling mode number, the scheduling mode number has a mapping relation with a time domain offset of each second data segment relative to the first data segment and a frequency domain offset of each second data segment relative to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

7. The method of claim 3 or 4, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes time-frequency resources and a scheduling scheme number of a first data segment, the scheduling scheme number has a mapping relation with Modulation and Coding Scheme (MCS) information, a time domain offset of each second data segment with respect to the first data segment, and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

8. The method of claim 1 or 2, wherein the first device is an access network device, the second device is a terminal device, and before the first device sends the plurality of data segments to the second device, the method further comprises:

the first device sends first information to the second device, wherein the first information comprises the number of data segments divided by the transmission block and a time-frequency resource range;

and the first equipment sends the data segments to the second equipment in the time frequency resource range.

9. The method according to claim 3 or 8, characterized in that the method further comprises:

and the first equipment determines the number of the data segments which need to be divided by the transmission block according to the channel quality or transmission delay requirement of the PDSCH.

10. The method according to claim 1 or 2, wherein the first device is a terminal device, the second device is an access network device, and before the first device segments the transport block and obtains the plurality of data segments of the transport block, the method further comprises:

the first device receives first information from the second device, wherein the first information comprises the number of data segments divided by the transmission block and a time-frequency resource range;

the first device segmenting a transport block, comprising:

the first device segments the transmission block according to the number of the data segments;

11. A method of data transmission, the method comprising:

the second device receives a plurality of data segments of a transmission block from the first device, wherein time domain resources of different data segments in the plurality of data segments are different and the distribution of the plurality of data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments in the plurality of data segments are different and the distribution of the plurality of data segments in a frequency domain is discontinuous;

the second device synthesizes the plurality of data segments into the transport block.

12. The method of claim 11, wherein the transport block is a data interleaved transport block.

13. The method of claim 11 or 12, wherein the first device is an access network device, wherein the second device is a terminal device, and wherein before the second device receives the plurality of data segments of the transport block from the first device, the method further comprises:

the second device receives first information from the first device, wherein the first information comprises the number of data segments of the transmission block to be divided, and the first information is also used for the second device to determine time-frequency resources of each data segment of the transmission block;

the second equipment determines the time-frequency resource of each data segment of the transmission block according to the first information;

the second device receiving a plurality of data segments of a transport block from a first device, comprising:

and the second equipment receives the plurality of data segments of the transmission block from the first equipment according to the number of the data segments and the time-frequency resources of each data segment of the transmission block.

14. The method of claim 11 or 12, wherein the first device is a terminal device, wherein the second device is an access network device, and wherein before the second device receives the plurality of data segments of the transport block from the first device, the method further comprises:

and the second equipment sends first information to the second equipment, wherein the first information comprises the number of the data segments of the transmission block to be divided, and the first information is also used for the first equipment to determine the time-frequency resources of each data segment of the transmission block.

15. The method according to claim 13 or 14, wherein any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment, the first time domain offset and the first frequency domain offset, and the first data segment is a first transmitted data segment of the transport block.

16. The method of claim 13 or 14, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment and a scheduling mode number, the scheduling mode number has a mapping relationship with a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

17. The method of claim 13 or 14, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes time-frequency resources and a scheduling scheme number of a first data segment, the scheduling scheme number has a mapping relation with Modulation and Coding Scheme (MCS) information, a time domain offset of each second data segment with respect to the first data segment, and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

18. The method of claim 11 or 12, wherein the first device is an access network device, wherein the second device is a terminal device, and wherein before the second device receives the plurality of data segments of the transport block from the first device, the method further comprises:

the second equipment receives first information from the first equipment, wherein the first information comprises the number of data segments divided by the transmission block and a time-frequency resource range;

and the second equipment receives the plurality of data segments of the transmission block from the first equipment in the time frequency resource range according to the number of the data segments.

19. The method of claim 11 or 12, wherein the first device is a terminal device, wherein the second device is an access network device, and wherein before the second device receives the plurality of data segments of the transport block from the first device, the method further comprises:

the second device sends first information to the second device, wherein the first information comprises the number of data segments divided by the transmission block and a time-frequency resource range;

20. The method according to claim 14 or 19, characterized in that the method further comprises:

and the second equipment determines the number of the data segments which need to be divided by the transmission block according to the channel quality or transmission delay requirement of a Physical Uplink Shared Channel (PUSCH).

21. A communication device, characterized in that the communication device comprises:

the processing module is used for segmenting a transmission block to obtain a plurality of data segments of the transmission block;

a communication module, configured to send the multiple data segments to a second device, where time domain resources of different data segments in the multiple data segments are different, and distribution of the multiple data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments in the multiple data segments are different, and distribution of the multiple data segments in a frequency domain is discontinuous.

22. The communications device of claim 21, wherein the transport block is a data interleaved transport block.

23. The communication device of claim 21 or 22, wherein the communication device is an access network device, wherein the second device is a terminal device,

the communication module is further configured to send first information to a second device before the communication module sends the plurality of data segments to the second device, where the first information includes the number of data segments that the transport block needs to be divided, and the first information is further used for the second device to determine time-frequency resources of each data segment of the transport block.

24. The communication device of claim 21 or 22, wherein the communication device is a terminal device, wherein the second device is an access network device,

the communication module is further configured to receive, from the second device, first information before the processing module segments a transmission block to obtain a plurality of data segments of the transmission block, where the first information includes the number of data segments into which the transmission block needs to be divided, and the first information is further used by the communication device to determine time-frequency resources of each data segment of the transmission block;

the processing module is further configured to determine, according to the first information, time-frequency resources of each data segment of the transport block;

the method for segmenting the transmission block by the processing module to obtain the plurality of data segments of the transmission block specifically comprises the following steps:

the processing module is used for segmenting the transmission block according to the number of the data segments to obtain a plurality of data segments of the transmission block;

the communication module sends the plurality of data segments to a second device, including:

and the communication module sends the data segments to the second equipment according to the time-frequency resources of the data segments of the transmission block.

25. The communication device according to claim 23 or 24, wherein any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment, the first time domain offset and the first frequency domain offset, and the first data segment is a first transmitted data segment of the transport block.

26. The communication device according to claim 23 or 24, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transmission block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transmission block, the first information further includes time-frequency resources of a first data segment and a scheduling mode number, the scheduling mode number has a mapping relation with a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment, the first data segment is a first transmitted data segment of the transmission block, the second data segment is a data segment of the transport block other than the first data segment.

27. The communication device according to claim 23 or 24, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further comprises a time-frequency resource and a scheduling scheme number of a first data segment, the scheduling scheme number has a mapping relation with Modulation and Coding Scheme (MCS) information, a time domain offset of each second data segment with respect to the first data segment, and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

28. The communication device of claim 23 or 24, wherein the communication device is an access network device, wherein the second device is a terminal device,

the communication module is further configured to send, to a second device, first information before sending the plurality of data segments to the second device, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range;

the manner of sending the plurality of data segments to the second device by the communication module is specifically:

the communication module transmits the plurality of data segments to a second device over the range of time-frequency resources.

29. The communication device of claim 23 or 28,

the processing module is further configured to determine the number of data segments that the transmission block needs to divide according to the channel quality or the transmission delay requirement of the PDSCH.

30. The communication device of claim 21 or 22, wherein the communication device is a terminal device, wherein the second device is an access network device,

the communication module is further configured to receive first information from the second device before the processing module segments a transport block to obtain a plurality of data segments of the transport block, where the first information includes the number of data segments and a time-frequency resource range partitioned by the transport block;

the method for segmenting the transmission block by the processing module specifically comprises the following steps:

the processing module segments the transmission block according to the number of the data segments;

31. A communication device, characterized in that the communication device comprises:

a communication module, configured to receive a plurality of data segments of a transport block from a first device, where time domain resources of different data segments of the plurality of data segments are different and distribution of the plurality of data segments in a time domain is discontinuous, and/or frequency domain resources of different data segments of the plurality of data segments are different and distribution of the plurality of data segments in a frequency domain is discontinuous;

a processing module for combining the plurality of data segments into the transport block.

32. The communications device of claim 31, wherein the transport block is a data interleaved transport block.

33. The communication device of claim 31 or 32, wherein the first device is an access network device, wherein the communication device is a terminal device,

the communication module is further configured to receive, before receiving multiple data segments of a transport block from a first device, first information from the first device, where the first information includes a number of data segments into which the transport block needs to be divided, and the first information is further used by the communication device to determine a time-frequency resource of each data segment of the transport block;

the manner in which the communication module receives the plurality of data segments of the transport block from the first device is specifically:

the communication module receives a plurality of data segments of the transport block from the first device according to the number of data segments and time-frequency resources of each data segment of the transport block.

34. The communication device of claim 31 or 32, wherein the first device is a terminal device, wherein the communication device is an access network device,

the communication module is further configured to send, to the second device, first information before receiving the plurality of data segments of the transport block from the first device, where the first information includes the number of data segments into which the transport block needs to be divided, and the first information is further used for the first device to determine time-frequency resources of each data segment of the transport block.

35. The communication device according to claim 33 or 34, wherein any two first time domain offsets are the same, any two first frequency domain offsets are the same, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further includes a time-frequency resource of a first data segment, the first time domain offset and the first frequency domain offset, and the first data segment is a first transmitted data segment of the transport block.

36. The communication device according to claim 33 or 34, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transmission block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transmission block, the first information further includes time-frequency resources of a first data segment and a scheduling mode number, the scheduling mode number has a mapping relation with a time domain offset of each second data segment with respect to the first data segment and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transmission block, the second data segment is a data segment of the transport block other than the first data segment.

37. The communication device of claim 33 or 34, wherein at least one first time domain offset is different from other first time domain offsets, at least one first frequency domain offset is different from other first frequency domain offsets, the first time domain offset is a time domain offset between two adjacent transmitted data segments of the transport block, the first frequency domain offset is a frequency domain offset between two adjacent transmitted data segments of the transport block, the first information further comprises a time-frequency resource and a scheduling scheme number of a first data segment, the scheduling scheme number has a mapping relation with Modulation and Coding Scheme (MCS) information, a time domain offset of each second data segment with respect to the first data segment, and a frequency domain offset of each second data segment with respect to the first data segment, and the first data segment is a first transmitted data segment of the transport block, the second data segment is a data segment of the transport block other than the first data segment.

38. The communication device of claim 31 or 32, wherein the first device is an access network device, wherein the communication device is a terminal device,

the communication module is further configured to receive first information from a first device before receiving a plurality of data segments of a transport block from the first device, where the first information includes a number of data segments divided by the transport block and a time-frequency resource range;

the communication module receives a plurality of data segments of the transport block from a first device over the time-frequency resource range according to the number of data segments.

39. The communication device of claim 31 or 32, wherein the first device is a terminal device, wherein the communication device is an access network device,

the communication module is further configured to send first information to the second device before receiving the plurality of data segments of the transport block from the first device, where the first information includes the number of data segments divided by the transport block and a time-frequency resource range;

40. The communication device of claim 34 or 39,

the processing module is further configured to determine the number of data segments that the transmission block needs to divide according to the channel quality or the transmission delay requirement of the physical uplink shared channel PUSCH.