WO2018228296A1

WO2018228296A1 - Method and apparatus for data transmission

Info

Publication number: WO2018228296A1
Application number: PCT/CN2018/090542
Authority: WO
Inventors: 葛士斌; 施弘哲; 毕晓艳
Original assignee: 华为技术有限公司
Priority date: 2017-06-16
Filing date: 2018-06-11
Publication date: 2018-12-20
Also published as: CN109150466B; CN109150466A

Abstract

The embodiments of the present application provide a technique for data transmission. When a communication device maps a plurality of code blocks (codeword blocks, CBs) to time-frequency resources for transmitting data, data of each CB is divided into a plurality of data blocks, mapped to different sub-carriers and different OFDM symbols. The CB is transmitted according to the described mapping mode. By dividing one CB into a plurality of data blocks and mapping same to different sub-carriers and different OFDM symbols for transmission, the invention may reduce the influence of depth attenuation and improve wireless transmission performance.

Description

Method and apparatus for data transmission

The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. In the application.

Technical field

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

Background technique

When performing data transmission, the transmitting end needs to perform channel coding for the data to be transmitted from the upper layer, form a code block (CB), combine different CBs, and then modulate the combined CB to generate a modulation symbol. Then, the modulation symbols are layer-mapped, and the modulation symbols after the layer mapping are pre-coded. Finally, the data to be transmitted is mapped to the corresponding time-frequency resource and the antenna port for transmission.

When the data of the same CB is mapped to the time-frequency transmission resource, the data of the same CB is distributed in the frequency domain of one OFDM symbol by interleaving. This allows for a more adequate frequency domain diversity gain. There is still room for further research and enhancement in the current interleaving method to further enhance wireless transmission performance.

Summary of the invention

The method and apparatus for performing data transmission provided by the embodiments of the present application optimize the distribution manner of the data of the code block in the time-frequency resource by the interleaving method, thereby improving the wireless transmission performance.

A first aspect of the embodiments of the present invention provides a data sending method. The communication device determines how the plurality of code blocks are mapped to the data distribution on the time-frequency resources. The data distribution manner is that the data of one code block is mapped to different OFDM symbols, and belongs to the same code block, and the data located on different OFDM symbols has different subcarrier frequencies. The communication device transmits the plurality of code blocks according to the data distribution manner described above. By mapping the data of one code block to different OFDM symbols, and distributing the data on different subcarriers. In this way, both the diversity gain in the time and frequency dimensions can be obtained, and the ability to resist deep fading is also obtained.

A second aspect of the embodiments of the present invention provides a communication device. The communication device includes a processing unit and a transceiver unit. The processing unit determines a manner in which the plurality of code blocks are mapped to data distribution on the time-frequency resource. The data distribution manner is that the data of one code block is mapped to different OFDM symbols, and belongs to the same code block, and the data located on different OFDM symbols has different subcarrier frequencies. The transceiver unit transmits the plurality of code blocks.

A third aspect of the embodiments of the present invention provides a device for enjoying the same. The communication device includes a processor and a transceiver. The processor determines how the plurality of code blocks are mapped to the data distribution on the time-frequency resources. The data distribution manner is that the data of one code block is mapped to different OFDM symbols, and belongs to the same code block, and the data located on different OFDM symbols has different subcarrier frequencies. The transceiver transmits the plurality of code blocks.

As a possible implementation manner, the data distribution manner further includes: mapping data on the OFDM symbol, arranged in a resource unit of the OFDM symbol according to an order of the code block to which the code block belongs, where, on the first OFDM symbol, The data of the n code blocks occupy the first resource unit, and the data of the n+th code blocks occupy the first resource unit of the second OFDM symbol, where the first resource unit is the OFDM symbol of the second OFDM symbol. The highest or lowest resource unit of the upper frequency, n is a natural number, m is a non-zero integer, and the first OFDM symbol and the second OFDM symbol are part of an OFDM symbol carrying the plurality of code block data.

As a possible implementation manner, the value of n is 1, and the value of m is the scheduling bandwidth divided by the CB size and rounded up or down.

As an implementation manner, the value of m may also adopt the following scheme: when the number of code blocks to be transmitted is less than or equal to the number of OFDM symbols, m is equal to 1. When the number of code blocks is greater than the number of OFDM symbols, m is equal to the ratio of the number of CBs to the number of OFDM symbols and is rounded up or down.

As a possible implementation manner, when the number of code blocks is less than or equal to the number of OFDM symbols, in the above embodiment, n+m is equal to the maximum code block number. When the number of code blocks is greater than the number of OFDM symbols, n+m is equal to the maximum code block number minus the value of the ratio of the number of code blocks to the number of OFDM symbols being rounded up or down.

As a possible implementation manner, the value of m is a random integer.

As a possible implementation manner, the data distribution manner further includes: mapping data on the OFDM symbol, arranged in a resource unit of the OFDM symbol according to an order of the code block to which the code block belongs, wherein, on the first OFDM symbol The data of the xth code block occupies a first resource unit, where the first resource unit is a resource unit with the highest frequency or the lowest frequency on the first OFDM symbol, and the x is a random integer.

As a possible implementation manner, the data distribution manner is: occupying the first n RBs of the first OFDM symbol and the first n RBs of the second OFDM symbol according to an order of the code blocks to which the data belongs, where the One OFDM symbol and the second OFDM symbol are two OFDM symbols that are consecutive in the time domain. The first n RBs are the lowest frequency n RBs or the highest frequency n RBs in the OFDM symbol, n is a natural number, and the scheduling bandwidth is more than n RBs.

A third aspect of an embodiment of the present invention provides a program. The program, when executed by the processor, causes the communication device to perform the method of the first aspect or the first aspect of the person in an alternative manner.

A fourth aspect of an embodiment of the present invention provides a program product, such as a computer readable storage medium, comprising the program of the third aspect.

DRAWINGS

FIG. 1 is a schematic flowchart of data transmission performed by a communication device according to an embodiment of the present application.

FIG. 2 is a schematic diagram of a communication scenario according to an embodiment of the present application.

FIG. 3 is a schematic diagram showing the manner in which data is distributed on time-frequency resources according to an embodiment of the present application.

FIG. 4 is a schematic diagram showing the manner in which data is distributed on time-frequency resources according to an embodiment of the present application.

FIG. 5 is a schematic diagram showing the manner in which data is distributed on time-frequency resources according to an embodiment of the present application.

FIG. 6 is a schematic diagram showing the manner in which data is distributed on time-frequency resources according to an embodiment of the present application.

FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.

FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application are described below with reference to the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

FIG. 2 shows a communication system 100 to which the embodiment of the present application is applied. The communication system 100 can include at least one network device 110. Network device 110 may be a device that communicates with a terminal device, such as a base station or base station controller, and the like. Each network device 110 can provide communication coverage for a particular geographic area and can communicate with terminal devices (e.g., UEs) located within the coverage area (cell). The network device 110 may be a base transceiver station (BTS) in a GSM system or a code division multiple access (CDMA) system, or a base station (node B, NB) in a WCDMA system. It is an evolved base station (evolutional node B, eNB or eNodeB) in the LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may be a relay station or an access point. , an in-vehicle device, a wearable device, a network side device in a future 5G network, or a network device in a public land mobile network (PLMN) that is evolving in the future.

The wireless communication system 100 also includes a plurality of terminal devices 120 located within the coverage of the network device 110. The terminal device 120 can be mobile or fixed. The terminal device 120 may refer to an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user. Agent or user device. The 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), with wireless communication. Functional handheld device, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a future 5G network or terminal in a future public land mobile network (PLMN) Equipment, etc.

FIG. 2 exemplarily shows one network device 110 and two terminal devices 120. Alternatively, the communication system 100 may include a plurality of network devices 110 and may include other numbers of terminals within the coverage of each network device 110. The device 120 is not limited in this embodiment of the present application. Optionally, the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, and the like. The embodiment of the present application is not limited thereto.

When the network device 110 performs data communication with the terminal device 120, the code block is transmitted on the time-frequency resource by means of interleaving. An interleaving manner is that data distribution of one code block is transmitted on different resource elements (REs) within one OFDM symbol. In the time domain, the smallest resource granularity is one OFDM symbol (the uplink is an SC-FDMA symbol. hereinafter collectively referred to as an OFDM symbol). In the frequency domain, the smallest granularity is one subcarrier. A time-frequency resource unit consisting of one OFDM symbol and one subcarrier is called RE. When the physical layer performs resource mapping, the RE is the basic unit. A resource block (RB) consisting of all OFDM symbols in one slot and 12 subcarriers in the frequency domain. The radio transmission resource scheduling uses RB as the basic unit for resource scheduling.

With further reference to Figure 3, the example has M code blocks CB 0, CB 1...CB M-1. M code blocks are transmitted through the time-frequency resources shown in the figure. Taking CB 0 as an example, CB 0 is divided into multiple data blocks, which are distributed over different subcarriers of one OFDM symbol, but are concentrated on the same OFDM symbol in the time domain. Such a distribution mode facilitates fast demodulation at the receiving end. Applicable to the application scenario where the receiving end needs to quickly demodulate the data sent by the sending end. However, in other application scenarios, the receiving end may not need to quickly demodulate data, but requires high data transmission performance. For example, if users use the mobile phone to access the Internet and other common scenarios, the performance of data transmission is more important than the rapid demodulation of data. In such a scenario, it is necessary to design a data distribution method that is more suitable for such a scenario.

Aiming at the above problems, a new data distribution method is designed as shown in Fig. 4: the data of the same code block is spread over multiple OFDM symbols. At the same time, data belonging to the same code block occupy the same subcarrier on different OFDM symbols. Such a data distribution method allows the same code block to fully obtain the diversity gain of the two dimensions of time and frequency. However, in the case where the coherence time is large, it is easy to be affected by deep fading on a large scale, thereby affecting the transmission performance.

In order to reduce the large-scale impact on the transmission performance, the network device 110 determines a data distribution manner in which a plurality of code blocks are mapped to time-frequency resources, wherein the data distribution manner is that data of one code block is mapped to different OFDM symbols. On the other, the data belonging to the same code block and located on different OFDM symbols have different subcarrier frequencies. The network device 110 then transmits the plurality of code blocks in accordance with the data distribution manner described above. ,

Specifically, in various embodiments, the data of one code block is mapped to different OFDM symbols, and belongs to the same code block, but the data located on different OFDM symbols is different in frequency of the subcarriers. Referring to FIG. 5, a plurality of code blocks are respectively distributed in

OFDM symbols

501, 502, 503. One of ordinary skill in the art will appreciate that the number of code blocks in the figures, as well as the number of OFDM symbols, are merely exemplary and are not intended to limit the invention. The figure shows

OFDM symbols

501, 502, 503, which may be contiguous in the time domain or discrete in the time domain. In this embodiment, the three OFDM symbols are continuous in the time domain. The data distribution manner may be: data mapped onto the OFDM symbol is arranged on the RE of the OFDM symbol in the order of the code block to which it belongs. Here, the order of code blocks means that after a codeword (CW) is divided into a plurality of code blocks, the code blocks are serialized, and the code blocks are serially regarded as a sort, and there is an order between the code blocks. As shown in FIG. 5, CB 0, CB 1, CB 2, ..., CB M-1 occupy OFDM 501 in accordance with the order of the code blocks. The entire OFDM symbol 501 can be occupied in order from the RE with the highest OFDM symbol frequency. As an alternative, the OFDM symbol frequency is the lowest RE (not shown), and the OFDM 501 is occupied. This embodiment of the present invention does not limit this. Wherein, on the OFDM symbol 501, the data of the nth code block occupies the first resource unit of the OFDM symbol 501. The first RE is the highest frequency RE in an OFDM symbol (which may also be the lowest frequency RE). In the present embodiment, on OFDM 501, n is 1, that is, the data of the first code block (CB 0) occupies the first resource unit of the OFDM symbol 501.

Then, on other OFDM symbols, the data of these code blocks are arranged by cyclic shift. Specifically, on the OFDM 502, the data on the first resource unit at the corresponding position relative to the previous OFDM symbol 501 is the data of the n+thth code block. m is the amount of displacement of the cyclic shift. Referring to FIG. 5, m is 3, that is, data on the first resource unit of OFDM 502 is data of CB 3. By the same token, on OFDM 503, with respect to OFDM 502, the code block occupying the first resource unit is the data of the n+m+m code blocks, that is, the data of the seventh code block occupies its first resource unit. In a cyclic shift manner, when determining a code block occupying a first resource unit of one OFDM symbol, first determining a code block occupying a first resource unit in a previous OFDM symbol, and then adding a displacement amount m, determining the present OFDM The symbol occupies the code block of the first resource unit. By cyclically shifting the data of multiple code blocks on multiple OFDM symbols, the probability that data belonging to the same code block is allocated on the same subcarrier can be greatly reduced, thereby reducing the influence of deep fading and improving Transmission performance. In this embodiment, n, m are all natural numbers.

As an embodiment, the value of the displacement amount m of the cyclic shift may be set to a ratio of the scheduling bandwidth to the CB size and rounded up or down. If the scheduling bandwidth is 3600 REs and the CB size is 1200 REs, the value of the displacement amount m is 3600/1200=3. Alternatively, the value of m is determined by the number of code blocks mapped to the time-frequency resource and the number of OFDM symbols. The ratio of the number of code blocks to the number of OFDM symbols is rounded up or down. Such a value can make a CB spread as much as possible on the subcarriers with different scheduling bandwidths, better resist the influence of deep fading, and improve transmission performance. As an implementation manner, the value of m can also adopt the following scheme. Solution 1: When the number of code blocks to be transmitted is less than or equal to the number of OFDM symbols, m is equal to 1. When the number of code blocks is larger than the number of OFDM symbols, m is equal to the ratio of the number of CBs to the number of OFDM symbols and is rounded up or down. Solution 2: When the number of code blocks is less than or equal to the number of OFDM symbols, in the above embodiment, n+m is equal to the maximum code block number. When the number of code blocks is greater than the number of OFDM symbols, n+m is equal to the maximum code block number minus the value of the ratio of the number of code blocks to the number of OFDM symbols being rounded up or down. The code block number used in the embodiment is the order in which the code blocks are. If a codeword is divided into multiple code blocks, these code blocks are considered to be serial, and the order between them is represented by a number, which is the number of the code block.

As another implementation manner, the value of the displacement amount m may also be a random integer, which may also be referred to as a pseudo random number. There are two ways to use the displacement amount m. First, the first resource unit of one OFDM symbol is occupied by the data of the mth code block, and then the data of different code blocks are arranged on the OFDM symbol in the order of the code block. Second, the first resource unit of the previous OFDM symbol in the time domain of one OFDM symbol is occupied by the data of the nth code block, and the first resource unit of the OFDM symbol is data of the n+thth code block. Occupied, then the data of the plurality of code blocks are arranged on the OFDM symbol in the order of the code blocks.

Referring to FIG. 6, as an implementation manner, the network device 110 may arrange data of multiple code blocks in the first x RBs of multiple OFDM symbols. It may be data of a plurality of code blocks, which are just arranged in the first x RBs of a plurality of OFDM symbols. It is also possible that the data of the plurality of code blocks are preferentially filled with the first x RBs of the plurality of OFDM symbols, and then arranged on the other RBs of the plurality of OFDM symbols. The first x RBs are the lowest frequency x RBs or the highest frequency n RBs in the OFDM symbol. x is a natural number and the scheduling bandwidth is more than x RBs.

In the above-exemplified embodiment, the network device 110 is a transmitting end, and the network device 110 can process the data to be sent according to the data distribution manner, and then send the processed data to the terminal device 120. If the network device 110 is the receiving end, the network device 110 can determine the distribution of the data sent by the terminal device 120 according to the data distribution manner, so as to accurately acquire data on the time-frequency resource. Similarly, if the terminal device 120 is a transmitting end, the terminal device 120 implements the foregoing data distribution manner by using the interleaving manner described above. The data distribution manner is that the data of one code block is mapped to different OFDM symbols, belongs to the same code block, and the data located on different OFDM symbols has different subcarrier frequencies. The terminal device 120 then transmits the plurality of code blocks in accordance with the data distribution manner described above. If the terminal device 120 is a receiving end, the terminal device 120 can determine the distribution of data sent by the network device 110 according to the data distribution manner, so as to accurately acquire data on the time-frequency resource.

Which data distribution mode is adopted, the network device 110 can indicate which data distribution mode the terminal device 120 uses by using the indication information. The data distribution mode is used to indicate the distribution of data of the same code block on at least one time domain symbol. The network device 110 sends the indication information to the terminal device 120.

Specifically, the network device 110 may directly indicate, by using the indication information, a data distribution manner for performing data transmission with the terminal device, and the terminal device may directly determine, according to the indication information, a data distribution manner used for data transmission with the network device, thereby According to the data distribution manner, data is transmitted to the network device or received by the network device.

As an optional embodiment, the indication information is any one of the following information: downlink control information DCI, radio resource control RRC signaling, and media access control MAC layer control element CE.

It should be understood that the network device 110 may also send the indication information to the terminal device by using other signalings than the foregoing three types of signaling, which is not limited in this embodiment of the present application. Alternatively, the network device 110 and the terminal device 120 use an implicit manner to transmit information about which data distribution mode is adopted, which is not limited by the present invention.

A method for data transmission in accordance with an embodiment of the present application is described above in conjunction with FIGS. 1 through 6. The structure of the network device implementing the above method, and the structure of the terminal device will be described below with reference to Figs. 7 and 8.

Referring to FIG. 7, the communication device that performs the method in the above embodiment includes a processing unit 702 and a transceiver unit 701. The communication device may be the network device 110 in the above embodiment, or may be the terminal device 120. The processing unit 702 is configured to perform the above step method. According to the description of the foregoing embodiment, the processing unit of the communication device determines a data distribution manner of the plurality of code blocks mapped to the time-frequency resource, wherein the data distribution manner is that the data of one code block is mapped to different OFDM symbols, belonging to The same code block, and the data located on different OFDM symbols, the subcarrier frequency is different. Then, the transceiver unit 701 of the communication device transmits the plurality of code blocks according to the data distribution manner described above. For the specific data distribution mode, refer to the description of the above embodiment, and details are not described herein again.

It should be understood that the division of each unit of the above communication device is only a division of a logical function, and may be integrated into one physical entity or physically separated in whole or in part. And these units can be realized by software in the form of processing component calls; or all of them can be realized in the form of hardware; some units can be realized by software in the form of processing component calls, and some units are realized by hardware. For example, the processing unit 701 or the processing unit 702 may be a separately set processing element, or may be implemented in one of the chips on the communication device (which may be the network device 110 or the terminal 120). Such as baseband chips. Furthermore, it can also be stored in the memory of the communication device in the form of a program, which is called by a processing element of the communication device and performs the function of the processing unit. The implementation of other units is similar. The communication device can receive the information sent by the base station 110 through the antenna, and the information is sent to the baseband device through the processing of the radio frequency device, and the above transceiver unit can receive/send the information through the interface between the radio frequency device and the baseband device. Furthermore, the processing unit 702 and the transceiver unit 701 of the above communication device may be integrated in whole or in part, or may be implemented independently. The processing elements described herein can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.

For example, the above processing unit 702 can be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors ( Digital singnal processor (DSP), or one or more Field Programmable Gate Array (FPGA). For another example, when one of the above units is implemented in the form of a processing component scheduler, the processing element may be a baseband processor, or a general purpose processor, such as a central processing unit (CPU) or other callable program. Device. As another example, these units can be integrated and implemented in the form of a system-on-a-chip (SOC).

Referring to FIG. 8, as another embodiment, the communication device (which may be the network device 110 or the terminal device 120 in the above embodiment) includes a transceiver 801 and a processor 802. The processor 802 can be a general-purpose processor, such as, but not limited to, a central processing unit (CPU), or a dedicated processor such as, but not limited to, a baseband processor, a digital signal processor (Digital Signal Processor, DSP), Application Specific Integrated Circuit (ASIC), and Field Programmable Gate Array (FPGA). Moreover, processor 802 can also be a combination of multiple processors. In particular, in the technical solution provided by the embodiment of the present invention, the processor 802 can be used to perform, for example, the steps performed by the processing unit 702 of the foregoing embodiment. Processor 802 may be a processor specifically designed to perform the steps and/or operations described above, or may be a processor that performs the steps and/or operations described above by reading and executing the instructions stored in the memory.

The transceiver 801 includes a transmitter and a receiver, wherein the transmitter is configured to transmit a signal through at least one of the plurality of antennas. The receiver is configured to receive a signal through at least one of the plurality of antennas. In particular, in the technical solution provided by the embodiment of the present invention, the transceiver 801 may be specifically configured to be executed by multiple antennas, for example, the function of the transceiver unit 701.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A data sending method, comprising:

The communication device determines a data distribution manner in which the plurality of code blocks are mapped to the time-frequency resource, where the data distribution manner is that the data of one code block is mapped to different OFDM symbols, belongs to the same code block, and is located on different OFDM symbols. Data, the subcarrier frequency is different;

The communication device transmits the plurality of code blocks.
The method according to claim 1, wherein the data distribution manner further comprises: mapping data on the OFDM symbol, arranged in a resource unit of the OFDM symbol in the order of the code block to which it belongs, wherein On an OFDM symbol, data of the nth code block occupies a first resource unit, and on the second OFDM symbol, data of the n+thth code block occupies a first resource unit of the second OFDM symbol, where the first resource unit For the highest or lowest resource unit on the OFDM symbol in which it is located, n is a natural number, m is a non-zero integer, and the first OFDM symbol and the second OFDM symbol are OFDM symbols carrying the plurality of code block data. a part of.
The method according to claim 2, wherein n is 1, the value of m is rounded up or down by the ratio of the size of the scheduling bandwidth to the size of the code block, or the value of m is determined by the number of code blocks mapped to the time-frequency resource. And the number of OFDM symbols is determined.
The method of claim 2 wherein the value of m is a random integer.
The method according to claim 1, wherein the data distribution manner further comprises: mapping data on the OFDM symbol, arranged in a resource unit of the OFDM symbol in the order of the code block to which it belongs, wherein On the first OFDM symbol, the data of the xth code block occupies a first resource unit, and the first resource unit is a resource unit with the highest or lowest frequency on the first OFDM symbol, and the x is a random integer.
The method according to claim 1, wherein the data distribution manner is: occupying the first n RBs of the first OFDM symbol and the first n RBs of the second OFDM symbol according to the order of the code blocks to which the data belongs. The first OFDM symbol and the second OFDM symbol are two OFDM symbols consecutive in the time domain, and the first n RBs are the lowest frequency n RBs or the highest frequency n RBs in the OFDM symbol. n is a natural number and the scheduling bandwidth is more than n RBs.
A communication device, characterized in that the communication device comprises:

a processing unit, configured to determine a data distribution manner of the plurality of code blocks mapped to the time-frequency resource, where the data distribution manner is that the data of one code block is mapped to different OFDM symbols, belongs to the same code block, and is located in different OFDM The data on the symbol, the subcarrier frequency is different;

And a transceiver unit, configured to transmit the plurality of code blocks.
The communication device according to claim 7, wherein the data distribution manner further comprises: mapping data on the OFDM symbol, arranged in a resource unit of the OFDM symbol in the order of the code block to which it belongs, wherein On the first OFDM symbol, data of the nth code block occupies a first resource unit, and on the second OFDM symbol, data of the n+thth code block occupies a first resource unit of the second OFDM symbol, where the first resource The unit is the highest or lowest resource unit on the OFDM symbol in which it is located, n is a natural number, m is a non-zero integer, and the first OFDM symbol and the second OFDM symbol are OFDM carrying the plurality of code block data. Part of the symbol.
The communication device according to claim 8, wherein n is 1, and the value of m is a scheduling bandwidth divided by a CB size and rounded up or down, or a value of m is determined by a number of code blocks mapped to a time-frequency resource. And the number of OFDM symbols is determined. .
The communication device according to claim 8, wherein the value of m is a random integer.
The communication device according to claim 7, wherein the data distribution manner further comprises: mapping the data on the OFDM symbol to the resource unit of the OFDM symbol in the order of the code block to which it belongs, wherein On the first OFDM symbol, the data of the xth code block occupies a first resource unit, and the first resource unit is a resource unit with the highest or lowest frequency on the first OFDM symbol, and the x is a random integer.
The communication device according to claim 7, wherein the data distribution manner is: occupying the first n RBs of the first OFDM symbol and the first n OFDM symbols according to the order of the code blocks to which the data belongs. RB, the first OFDM symbol and the second OFDM symbol are two consecutive OFDM symbols in a time domain, and the first n RBs are the lowest frequency n RBs or the highest frequency n OFDM symbols RB, n is a natural number, and the scheduling bandwidth is more than n RBs.
A computer readable medium having stored therein instructions that, when executed, cause a communication device to perform the method of claims 1-6 above.