WO2018171691A1

WO2018171691A1 - Method and apparatus for carrying out data transmission

Info

Publication number: WO2018171691A1
Application number: PCT/CN2018/080092
Authority: WO
Inventors: 葛士斌; 毕晓艳; 施弘哲
Original assignee: 华为技术有限公司
Priority date: 2017-03-24
Filing date: 2018-03-22
Publication date: 2018-09-27
Also published as: CN108599910B; CN108599910A

Abstract

Provided are a method and apparatus for carrying out data transmission. The method comprises: a network device 110 determining, according to a service requirement or an application scenario of a terminal device, a data distribution manner for carrying out data transmission with the terminal device, wherein the data distribution manner is used for indicating a distribution condition of data of the same code block on at least one time domain symbol; and the network device 110 carrying out, according the data distribution manner, data transmission with the terminal device. By means of the method and apparatus for carrying out data transmission in the embodiment of the present application, the data distribution manner for carrying out the data transmission between the network device 110 and the terminal device can be flexibly configured, so as to satisfy different service requirements.

Description

Method and apparatus for data transmission

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 on 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.

The data distribution method used in the prior art, for example, the modulation symbols generated by the modulation are first mapped to layers, then mapped to the frequency domain, and finally mapped to the time domain, and interleaved in the process of mapping. The data distribution after mapping is that the data of the same CB is distributed in the frequency domain and concentrated in the time domain. There is room for further research and improvement in such data distribution methods to improve wireless transmission performance. Summary of the invention

The method and device for performing data transmission provided by the embodiments of the present application can flexibly configure a data distribution manner for data transmission between a network device and a terminal device, thereby meeting different service requirements.

In a first aspect, a method for performing data transmission is provided, including: determining, by a network device, a data distribution manner for performing data transmission with the terminal device, where the data distribution manner is used to represent data of the same code block in at least one The distribution on the time domain symbol; the network device performs data transmission with the terminal device according to the data distribution manner.

Specifically, before the data transmission with the terminal device, the network device may first determine, according to the service requirement or the application scenario of the terminal device, a data distribution manner for indicating a distribution of data of the same code block on at least one time domain symbol. The network device can perform data transmission with the terminal device according to the data distribution manner. For example, if the network device is a sending end, the network device may process the data to be sent according to the data distribution manner, and then send the processed data to the terminal device; if the network device is a receiving end, the network device may The data distribution manner determines the distribution of data sent by the terminal device, thereby accurately acquiring data on the time-frequency resource.

Therefore, the network device can serve as both a transmitting end and a receiving end. When the network device acts as the transmitting end, the terminal device is the receiving end. When the network device acts as the receiving end, the terminal device is the transmitting end. The foregoing method can be applied to the uplink transmission between the network device and the terminal device, and can also be applied to the downlink transmission between the network device and the terminal device, which is not limited in this embodiment.

The method for performing data transmission in the embodiment of the present application, the network device determines the data distribution manner according to different service requirements or application scenarios, and can flexibly configure the data distribution manner of data transmission between the network device and the terminal device, thereby Meet the different business needs of the receiving end.

In a first possible implementation manner of the first aspect, the data distribution manner is a time domain scatter mode or a time domain concentrating mode, where the time domain scatter mode is used to represent data of the same code block in multiple The time domain symbols are distributed, and the time domain concentration mode is used to indicate that data of the same code block is concentratedly distributed on at least one consecutive time domain symbol. The time-concentrated distribution method uses priority frequency domain mapping, and then time domain mapping, and does not interleave. Time concentration The cloth mode 2 is based on the time domain centralized distribution mode 1, and performs frequency domain interleaving, and is a time domain centralized distribution mode 2. Specifically, the data distribution manner may be a time domain scatter mode or a time domain concentrating mode, where the time domain scatter mode means that data from the same code block is distributed in the time domain, and the time domain concentrating mode refers to Data from the same code block is concentrated in the time domain. For the data distributed in the centralized time domain mode, the receiving end can quickly demodulate it, which can meet the application scenarios that need to quickly demodulate the data. For the data distributed in the time domain decentralized manner, the transmission reliability is higher and the transmission performance is better. The time domain distributed distribution mode 1 uses the priority time domain mapping, the frequency domain mapping method, and then the time domain interleaving, then the time domain distributed distribution mode 1. When the mapping of the priority frequency domain is used, and then the time domain mapping is performed, and the time-frequency interleaving is performed, the time domain dispersion mode 2 is used. The priority time domain mapping and the frequency domain mapping are not interleaved, and the time domain is distributed. When the priority time domain mapping, the frequency domain mapping method, and the frequency domain interleaving are used, the time domain distributed distribution mode 4 is used. The priority time domain mapping, the frequency domain mapping method, and the time domain interleaving are used as the time domain distributed distribution mode 5. The priority time domain mapping, the frequency domain mapping method, and the time-frequency interleaving are used as the time domain distributed distribution mode 6.

It should be understood that the time domain concentration mode needs to distribute the data of the same CB as much as possible in one time domain symbol, and if one time domain symbol cannot be placed, the remaining data of the CB is placed on the adjacent time domain symbol. , and so on, therefore, in the case of a time-domain centralized approach, the same CB's data is distributed over at least one consecutive time-domain symbol. While the time domain decentralization method needs to set the data records of the same CB, the data from the same CB may not be scattered to all available time domain symbols. For example, there are 10 available time domain symbols, and one CB may only The three time domain symbols, five time domain symbols or eight time domain symbols placed therein are dispersed, which should belong to the time domain dispersion mode of the embodiment of the present application.

It should be understood that the foregoing data distribution manner only reflects the final distribution of data from the same CB in the time domain. The embodiment of the present application does not limit the distribution of data in the frequency domain and the airspace. For example, in the case that the data to be transmitted is distributed in the time domain in a time domain manner, the data from the same CB may be distributed in space and/or frequency, or may be centralized, time domain. The centralized mode is also applicable, and the embodiment of the present application does not limit this.

In other possible implementation manners of the first aspect, the time domain concentration manner is used to indicate that the first data and the second data that are satisfied by the initial location index in all the code blocks, the time domain symbol index meets ^≤ ² ;

The initial position index of the first data is an initial position index of the second data, and the time domain symbol index of the first data is a time domain symbol index of the second data.

The time domain dispersion manner is used to indicate that there is a first code block, in which the initial location index satisfies ^3⁄4 < third data and fourth data, and the time domain symbol index satisfies >,

Wherein, the initial position of said third index data, ^¾ of the initial position of the fourth index data for the index of the third time-domain symbol data, ^"4 for said fourth time domain data symbol index .

In another possible implementation manner of the first aspect, the time domain concentration manner is used to indicate that, in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the first The maximum value of the initial position index of the data distributed in the time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the resource unit of the first code block, and the resource unit performs basic resource allocation for the scheduling user. Unit, all time domain symbols in the resource unit are the first time domain symbols; or

The time domain dispersion manner is used to indicate that in a first time domain symbol including data from Q code blocks, there are at least two second code blocks belonging to the Q code blocks, and the second code block is in The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the resource unit of the second code block, and Q is an integer greater than 1. . In other possible implementation manners of the first aspect, the time domain dispersion manner includes:

a first time domain scatter mode, configured to indicate that data from the same code block is distributed over all time domain symbols in the resource unit, where the resource unit is a basic unit for resource allocation of the scheduling user;

a second time domain dispersion manner, configured to indicate that data from the same code block is distributed over all time domain symbols of the same time slot in the resource unit;

The third time domain dispersion mode is configured to indicate that data from the same code block is distributed over N time domain symbols in the resource unit, and N is an integer greater than 1.

With reference to the foregoing possible implementation manner of the first aspect, in a second possible implementation manner of the foregoing aspect, the method further includes: the network device according to the service requirement or the application scenario of the terminal Determining an attribute of the demodulation reference signal DMRS, where the attribute of the DMRS corresponds to the data distribution mode, the attribute of the DMRS is a pattern of the DMRS or a port number of the DMRS; the network device is to the terminal device Send the attributes of the DMRS.

Specifically, the network device and the terminal device need to determine a demodulation reference signal (DMRS) pattern or a DMRS port number when performing data transmission. In this embodiment, the DMRS pattern or the DMRS port number is collectively referred to as an attribute of the DMRS. The attributes of the DMRS are bound to the data distribution mode configured by the network device, that is, the attributes of different DMRSs correspond to different data distribution modes. In this way, the network device notifies the terminal device of the attribute of the DMRS used when the terminal device performs data transmission, and the terminal device can determine the data distribution mode used for data transmission with the network device according to the attribute of the DMRS, thereby The data distribution mode is to send data to the network device or receive data sent by the network device.

It should be understood that the attributes of the foregoing DMRS may be the DMRS pattern or the port number of the DMRS, and may be the scrambling code or the orthogonal sequence of the DMRS or the number of OFDM symbols occupied by the DMRS signal. limited.

In another possible implementation manner of the first aspect, if the application scenario is that the demodulation result needs to be fed back in the current resource unit, the attribute of the DMRS corresponds to the time domain centralized mode, and the resource unit performs resources for the scheduling user. The basic unit of allocation;

If the application scenario is that the demodulation result does not need to be fed back in the current resource unit, the attribute of the DMRS corresponds to the time domain dispersion mode.

In another possible implementation manner of the first aspect, where the pattern of the DMRS is that the DMRS occupies a time domain symbol, the pattern of the DMRS corresponds to the time domain concentration mode;

If the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, if there is no data transmission between any two time domain symbols occupied by the DMRS, the pattern of the DMRS corresponds to the time domain concentration. In a manner, if there is data transmission between at least two time domain symbols between the time domain symbols occupied by the DMRS, the attributes of the DMRS correspond to the time domain dispersion manner.

In other possible implementation manners of the first aspect, the method further includes:

The network device determines, according to the service requirement or the application scenario of the terminal device, a frame structure used for data transmission, where the frame structure corresponds to the data distribution mode.

In another possible implementation manner of the first aspect, if the application scenario of the terminal device is that the demodulation result needs to be fed back in the current resource unit, the frame structure corresponds to the time domain centralized mode, and the resource unit is a scheduling user. The basic unit for resource allocation;

If the application scenario of the terminal device is that the demodulation result does not need to be fed back in the current resource unit, the frame structure pair The time domain should be dispersed.

With reference to the foregoing possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the method further includes: the network device sending the indication information to the terminal device, where the indication information is used Indicates the manner in which the data is distributed.

Specifically, the network device may directly indicate the data distribution manner of the data transmission with the terminal device by using the indication information, 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.

With reference to the foregoing possible implementation manner of the foregoing aspect, in a fourth possible implementation manner of the foregoing aspect, the indication information is any one of the following information: downlink control information DCI, radio resource control RRC signaling, and media The access control MAC layer control element CE.

With reference to the foregoing possible implementation manner of the first aspect, in a fifth possible implementation manner of the foregoing aspect, the network device performs data transmission with the terminal device according to the data distribution manner, including: the network The device processes the data to be sent according to the data distribution manner; the network device sends the processed data to be sent to the terminal device.

Specifically, when the network device is used as the sending end, the network device may process the data to be sent according to the data distribution manner, and then send the processed data to be sent to the terminal device, so that the data satisfies the determined distribution. .

With reference to the foregoing possible implementation manners of the first aspect, in a sixth possible implementation manner of the first aspect, the network device, according to the data distribution manner, processing data to be sent, including: In the data distribution manner, the data to be sent is interleaved, and the interleaving process includes interleaving the bit stream of the data to be transmitted and/or interleaving the modulation symbols of the data to be transmitted.

Specifically, the data to be sent may be subjected to a series of steps such as channel coding, code block cascading, modulation mapping, layer mapping, precoding, and resource mapping before being sent. In this embodiment, the network device may send data to be sent. The processing may be performed by performing bit-level interleaving on the data to be sent, or performing symbol-level interleaving on the data to be sent, which is not limited in this embodiment of the present application.

With reference to the foregoing possible implementation manners of the first aspect, in a seventh possible implementation manner of the foregoing aspect, the network device, according to the data distribution manner, processing data to be sent, includes: The data distribution manner is performed by performing resource mapping on the to-be-sent data by using a resource mapping rule corresponding to the data distribution manner.

Specifically, the network device may perform resource mapping according to the data distribution manner, and select a resource mapping rule corresponding to the data distribution manner, and perform resource mapping on the data to be sent according to the data distribution manner. For example, if the data distribution mode is a time domain centralized mode, the network device may select a resource mapping manner that can generate a time-distributed effect of data of the same code block; if the data distribution mode is a time domain distributed mode, the network device It is possible to select a resource mapping manner in which the data of the same code block can be distributed in time.

With reference to the foregoing possible implementation manner of the first aspect, in an eighth possible implementation manner of the foregoing aspect, the network device performs data transmission with the terminal device according to the data distribution manner, including: the network The device receives the data sent by the terminal device according to the data distribution manner.

Correspondingly, the terminal device may determine, according to the same factor, or according to the received indication information, a data distribution manner used for data transmission with the network device. For example, determine data distribution based on DMRS attributes or frame structure the way. At the same time, it can also be combined with the received indication information to determine the data distribution mode.

In a second aspect, a method for performing data transmission is provided, including: receiving, by a terminal device, indication information sent by a network device, where the indication information is used to indicate data that the terminal device performs data transmission with the network device a distribution mode, where 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 terminal device determines the data distribution mode according to the indication information; The data distribution manner is performed, and data transmission is performed with the network device.

In a first possible implementation manner of the second aspect, the data distribution manner is a time domain scatter mode or a time domain concentrating mode, where the time domain scatter mode is used to represent data of the same code block in multiple The time domain symbols are distributed, and the time domain concentration mode is used to indicate that data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

With reference to the foregoing possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the indication information is any one of the following information: downlink control information DCI, radio resource control RRC signaling, and media The access control MAC layer control element CE.

With the above-mentioned possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the terminal device performs data transmission with the network device according to the data distribution manner, including: the terminal The device processes the data to be sent according to the data distribution manner; the terminal device sends the processed data to be sent to the network device.

With the foregoing possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the processing, by the terminal device, the data to be sent according to the data distribution manner, the method includes: In the data distribution manner, the data to be sent is interleaved, and the interleaving process includes interleaving the bit stream of the data to be transmitted and/or interleaving the modulation symbols of the data to be transmitted.

With reference to the foregoing possible implementation manners of the second aspect, in a fifth possible implementation manner of the second aspect, the processing, by the terminal device, the data to be sent according to the data distribution manner, the method includes: The data distribution manner is performed by performing resource mapping on the to-be-sent data by using a resource mapping rule corresponding to the data distribution manner.

With reference to the foregoing possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the terminal device performs data transmission with the network device according to the data distribution manner, including: the terminal The device receives data sent by the network device according to the data distribution manner.

In other possible implementation manners of the second aspect, the time domain concentration manner is used to indicate that, in all code blocks, the initial location index satisfies the first data and the second data of ^<X2 , and the time domain symbol index satisfies ^≤ ” ² ;

In another possible implementation manner of the second aspect, the time domain concentration manner is used to indicate that, in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the first The maximum value of the initial position index of the data distributed in the time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the resource unit of the first code block, and the resource unit performs basic resource allocation for the scheduling user. Unit, all time domain symbols in the resource unit are the first time domain symbols; or The time domain dispersion manner is used to indicate that in a first time domain symbol including data from Q code blocks, there are at least two second code blocks belonging to the Q code blocks, and the second code block is in The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the resource unit of the second code block, and Q is an integer greater than 1. .

In other possible implementation manners of the second aspect, the time domain dispersion manner includes:

In a third aspect, a method for performing data transmission is provided, including: receiving, by a terminal device, an attribute of a demodulation reference signal DMRS sent by a network device, where an attribute of the DMRS corresponds to the data distribution manner,

The attribute of the DMRS is the pattern of the DMRS, the port number of the DMRS, or the number of OFDM symbols occupied by the DMRS signal; the terminal device determines, according to the attribute of the DMRS, data transmission with the network device. a data distribution manner, where the data distribution manner is used to indicate a distribution of data of the same code block on at least one time domain symbol; and the terminal device performs data transmission with the network device according to the data distribution manner.

In a first possible implementation manner of the third aspect, the data distribution manner is a time domain scatter mode or a time domain concentrating mode, where the time domain scatter mode is used to represent data of the same code block in multiple The time domain symbols are distributed, and the time domain concentration mode is used to indicate that data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

With the foregoing possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the terminal device performs data transmission with the network device according to the data distribution manner, including: the terminal The device processes the data to be sent according to the data distribution manner; the terminal device sends the processed data to be sent to the network device.

With reference to the foregoing possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the processing, by the terminal device, the data to be sent according to the data distribution manner, the method includes: In the data distribution manner, the data to be sent is interleaved, and the interleaving process includes interleaving the bit stream of the data to be transmitted and/or interleaving the modulation symbols of the data to be transmitted.

With the foregoing possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the processing, by the terminal device, the data to be sent according to the data distribution manner, the method includes: The data distribution manner is performed by performing resource mapping on the to-be-sent data by using a resource mapping rule corresponding to the data distribution manner.

With reference to the foregoing possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the terminal device performs data transmission with the network device according to the data distribution manner, including: the terminal The device receives data sent by the network device according to the data distribution manner.

In other possible implementation manners of the third aspect, the time domain concentration manner is used to indicate that in all the code blocks, the initial location index satisfies the first data and the second data of ^<X2 , and the time domain symbol index satisfies ^≤ ” ² ;

The time domain dispersion manner is used to indicate that a first code block exists, and in the first code block, an initial location index is satisfied. ^3⁄4 < ^X4 of the third data and the fourth data, the time domain symbol index satisfies >" ⁴ ,

In another possible implementation manner of the third aspect, the time domain concentration manner is used to indicate that, in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the first The maximum value of the initial position index of the data distributed in the time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the resource unit of the first code block, and the resource unit performs basic resource allocation for the scheduling user. Unit, all time domain symbols in the resource unit are the first time domain symbols; or

The time domain dispersion manner is used to indicate that in a first time domain symbol including data from Q code blocks, there are at least two second code blocks belonging to the Q code blocks, and the second code block is in The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the resource unit of the second code block, and Q is an integer greater than 1. .

In other possible implementation manners of the third aspect, the time domain dispersion manner includes:

In another possible implementation manner of the third aspect, if the application scenario is that the demodulation result needs to be fed back in the current resource unit, the attribute of the DMRS corresponds to the time domain centralized mode, and the resource unit allocates resources for the scheduling user. basic unit;

In another possible implementation manner of the third aspect, where the pattern of the DMRS is that the DMRS occupies a time domain symbol, the pattern of the DMRS corresponds to the time domain concentration mode;

If the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, if there is no data transmission between any two time domain symbols occupied by the DMRS, the pattern of the DMRS corresponds to the time domain concentration. In a manner, if there is data transmission between at least two time domain symbols occupied by the DMRS, the attributes of the DMRS correspond to the time domain dispersion manner.

A fourth aspect provides a method for performing data transmission, including: determining, by a terminal device, a data distribution manner for performing data transmission with the network device according to a frame structure used for data transmission with a network device, where 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 terminal device performs data transmission with the network device according to the data distribution manner.

In a first possible implementation manner of the fourth aspect, the data distribution manner is a time domain scatter mode or a time domain concentrating mode, where the time domain scatter mode is used to represent data of the same code block in multiple The time domain symbols are distributed, and the time domain concentration mode is used to indicate that data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

Combination of the above possible implementation of the fourth aspect, a second possible implementation of the fourth aspect, the time-domain expressed in a centralized manner for all the code blocks, the initial position of the index satisfying ^<the first data and The second data, the time domain symbol index satisfies ^≤ "²; An initial position index of the first data, an initial position index of the second data, a time domain symbol index of the first data, and a time domain symbol index of the second data;

The time domain dispersion manner is used to indicate that there is a first code block, in which the initial location index satisfies the fourth data and the fourth data, and the time domain symbol index satisfies > ⁴ .

Wherein, the initial position data of the fourth index, the index ^¾ of the initial position of fourth data, time-domain symbol data of the fourth index ^"4 is the fourth data in the time domain symbol index .

With reference to the foregoing possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the time domain concentration manner is used to indicate that, in the first time domain symbol, there is no at least two first codes a block, a maximum value of an initial position index of data distributed in the first time domain symbol of the first code block is not equal to a maximum value of an initial position index of data distributed in the resource unit in the first code block. The resource unit is a basic unit for scheduling resource allocation, and all time domain symbols in the resource unit are the first time domain symbol; or

With reference to the foregoing possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the time domain decentralized manner includes:

The fourth time domain decentralization mode is configured to indicate that data from the same code block is distributed over N time domain symbols in the resource unit, and N is an integer greater than one.

With the foregoing possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, if the application scenario of the terminal device is a demodulation result, the current resource unit needs to be fed back, and the frame structure corresponds to the In the time domain concentration mode, the resource unit is a basic unit for resource allocation of the scheduling user;

If the application scenario of the terminal device is that the demodulation result does not need to be fed back in the current resource unit, the frame structure corresponds to the time domain dispersion mode.

A fifth aspect of the embodiments of the present invention provides a data transmission method. The terminal device determines a data distribution manner for data transmission with the network device, and the data distribution manner is used to indicate distribution of data of the same code block on at least one time domain symbol. The terminal device performs data transmission with the network device by using the data distribution manner.

In combination with the methods provided in the first to fifth aspects, the possible implementation manners further include:

(1) In the case that the demodulation result, that is, ACK/NACK, needs to be fed back in the current scheduling resource or time slot, and in the case where the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, any two of the DMRSs are occupied. If there is no data transmission between time domain symbols, then the distribution mode 1 or 2 in the time domain set is used. The time-concentrated distribution method 1 does not do the interweaving, realizes the single order, and is suitable for small bandwidth. The time-concentrated distribution method 2 can obtain the frequency domain diversity gain through frequency domain interleaving.

(2) Demodulation result, that is, ACK/NACK, needs to be fed back in the current scheduling resource, and if the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, any two time domain symbols occupied by the DMRS There is a transmission of data between them, and one of the time domain dispersion distribution modes 1-6 is used. The DMRS pattern is occupied by DMRS In the case of at least two time domain symbols, and there is a case where data transmission occurs between any two time domain symbols occupied by the DMRS, indicating that the terminal device moves fast, and time diversity can be obtained through a distributed manner of time domain dispersion. Gain. As a possible implementation manner, in this condition, the time domain centralized distribution mode 1 may also be adopted, which is to consider that ACK/NACK needs to be reported in the current scheduling resource, and there is a need for rapid demodulation, and at this time, the DMRS occupies two There is data transmission between time domain symbols, channel estimation takes time, which is not conducive to fast demodulation, so in order to save time, no interleaving is performed. .

(3) in the case that the demodulation result does not need to be fed back in the current scheduling resource, and in the case that the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, data exists between any two time domain symbols occupied by the DMRS. For the transmission, one of the time domain dispersion distribution modes 1-6 is used. In the case that the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, and the data transmission between any two time domain symbols occupied by the DMRS exists, the terminal device moves at a fast speed and utilizes time. The dispersion can obtain time diversity gain.

(4) In the case that the demodulation result does not need to be fed back in the current scheduling resource, and the DMRS pattern is that the DMRS occupies at least two time domain symbols, there is no data between any two time domain symbols occupied by the DMRS. For the transmission, one of the time-domain centralized distribution methods 1-2 is used. At this time, considering the DMRS signal concentration, the terminal device does not move fast, and the time diversity gain effect is not strong, so the time domain centralized distribution mode 1-2 is used. As a possible implementation manner, one of the time domain distributed distribution methods 1-6 can also be used. One of the time-spreading modes 1-6 is to consider that although the time diversity gain is not obvious in this case, since the demodulation result does not need feedback in the current scheduling resource, the time-distributed manner can be combined with another scenario. The data distribution is consistent and easy to implement. In another scenario, the DMRS occupies at least two time domain symbols, and there is no data transmission between any two time domain symbols occupied by the DMRS.

(5) In addition to determining the data distribution manner according to the DMRS attribute and the frame structure, the data distribution manner may be determined according to a channel state information reference signal (CSI-RS). In general, when the terminal device is in a high-speed mobile scenario, the CSI-RS density will be higher. Therefore, one of the time domain distributed distribution modes 1-6 can be used in a scene with high CSI-RS density, so that the mobile scene can be used to obtain a better time diversity gain by using the time domain dispersion method. On the other hand, in the case where the CSI-RS density is low, one of the time domain centralized distribution methods 1-2 is used. The lower density indicates that the terminal device is in a low-speed moving scenario. In this scenario, the time diversity gain is not obvious, and the time domain centralized distribution mode is used to facilitate fast demodulation.

(6) The network device can also determine the data distribution mode by the configuration of slot aggregation. When the demodulation result does not need to be reported in the current scheduling resource, and the slot aggregation is not performed, the network device uses the distribution mode 1 or 2 in the time domain set. On the other hand, when the demodulation result does not need to be fed back in the current scheduling resource, and the slot aggregation mode is used, the network device uses the time domain distributed distribution mode.

(7) If the CBG is retransmitted using Hybrid Automatic Repeat reQuest (HQQ), the distribution pattern in the time domain set is 1 or 2. For the HARQ retransmission of the CBG, if the data distribution mode of the time domain is dispersed, if there are many CBG errors after an error, the retransmission for CBGHARQ loses its meaning. If the HARQ is retransmitted for a code word (CW), one of the distribution modes 1-6 of the time domain dispersion is used.

(8) 5G's new radio technology (New Radio, NR) supports two kinds of carrier waveforms, Discrete Fourier Transformer Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) and Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM). If DFT-s-OFDM is used, the time domain dispersion distribution method is used 1-6 One of them. If CP-OFDM is used, one of the distribution modes 1-2 in the time domain set is used.

(9) A CW in NR can be mapped to 4 layers. The network device can determine the data distribution mode used according to the number of layers corresponding to a CW. When the number of layers corresponding to a CW is 1, the data distribution method without interleaving is used, such as the time domain centralized distribution mode 1 or the time domain distributed distribution mode 5 . When the number of layers corresponding to the CW is 2, 3, or 4, the frequency domain interleaving time-domain centralized distribution mode 2 or the time domain distributed distribution mode 4 is used. As a possible implementation manner, when the number of layers corresponding to the CW is 1 or 2, a non-interleaved data distribution manner, such as a time domain centralized distribution mode 1 or a time domain distributed distribution mode 5 is used. When the number of layers corresponding to the CW is 3, or 4, the frequency domain interleaving time-domain centralized distribution mode 2 or the time domain distributed distribution mode 4 is used. The premise of obtaining gain by frequency domain interleaving and time-frequency interleaving is that there are multiple CBs, the number of layers is small, the probability of occurrence of multiple CBs in one OFDM symbol or in several OFDM symbols is small; multiple CBs appear in multiple layers, and the probability is large. Therefore, the number of layers is small, not interleaved, which is convenient to implement; when there are many layers, the gain is obtained by interleaving.

(10) In data transmission, data transmission and retransmission can use the same data distribution method. As a possible embodiment, new transmissions and retransmissions can also use different data distribution methods. For example, the newly transmitted data uses a non-interleaved data distribution method, such as a time domain centralized distribution mode 1 or a time domain distributed distribution mode 3 . The retransmitted data uses frequency domain interleaved data distribution methods, such as time domain centralized distribution mode 2 or time domain distributed distribution mode 4 . As a possible embodiment, the retransmitted data may also be in a time domain interleaving manner, such as time domain distributed patterns 1 , 2, 7, and 8. Retransmission and new transmission In the same way, the implementation of the single; retransmission, use interleaving, because it has been retransmitted, indicating that the channel conditions are bad, need to use interleaving, improve retransmission performance.

(11) When the DMRS occupies 3 or more time domain symbols, and there is data transmission between the 3 or more time domain symbols, then one of the time domain dispersed distribution modes 1-6 is used. Kind. Referring to FIG. 30, the DMRS occupies at least a first time domain symbol, a second time domain symbol, and a third time domain symbol. Data is transmitted between the first time domain symbol and the second time domain symbol, and data is also transmitted between the second time domain symbol and the third time domain symbol. And the first time domain symbol, the second time domain symbol, and the third time domain symbol are sequentially arranged in the time domain. In this case, one of the distribution patterns 1-6 of the time domain dispersion is used. Since DMRS occupies three or more time-domain symbols and there is data transmission between them, it is difficult to achieve fast demodulation in this case, so the time-distributed data distribution method is used to obtain performance gain.

(12) In the case that the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, and there is data transmission between any two time domain symbols occupied by the DMRS, and the HARQ retransmission is for the codeword (codeword, CW) For retransmission, one of the time domain dispersion distribution modes 1-6 is used.

(13) When the DMRS demodulation result is not feedback from the current scheduling resource, and the HARQ retransmission is retransmission for the codeword (CW), one of the time domain distributed distribution modes 1-6 is used.

(14) When the DMRS demodulation result is not fed back by the current scheduling resource, and the HARQ retransmission is retransmission for the codeword, and the DMRS pattern is that the DMRS occupies at least two time domain symbols, and the DMRS occupies any arbitrary The transmission of data between two time domain symbols uses one of the time domain dispersion distribution modes 1-6

(15) When the DMRS pattern is that the DMRS occupies at least two time domain symbols, and there is data transmission between any two time domain symbols occupied by the DMRS, and the HARQ is retransmitted for the CBG, The time is distributed and the time dispersion is within a CBG.

(16) If the demodulation result is not in the current scheduling resource feedback and the HARQ is retransmitted for CBG, then the time dispersion distribution mode is adopted, and the time dispersion range is within one CBG.

(17) The demodulation result is not fed back by the current scheduling resource. If the DMRS pattern is that the DMRS occupies at least two time domain symbols, and there is data transmission between any two time domain symbols occupied by the DMRS, and the HARQ is For CBG retransmission, the time dispersion distribution method is adopted, and the time dispersion range is within one CBG. In a sixth aspect, an apparatus for performing data transmission is provided for performing the method of the first aspect or any possible implementation of the first aspect. In particular, the apparatus comprises means for performing the method of any of the above-described first or first possible implementations of the first aspect.

In a seventh aspect, an apparatus for performing data transmission is provided for performing the method of any of the second aspect or any of the possible implementations of the second aspect. In particular, the apparatus comprises means for performing the method of any of the possible implementations of the second aspect or the second aspect described above.

In an eighth aspect, an apparatus for performing data transmission is provided for performing the method of any of the third or third aspects of the possible implementation. In particular, the apparatus comprises means for performing the method of any of the above-described third or third possible implementations.

In a ninth aspect, an apparatus for performing data transmission is provided for performing the method of any of the third or third aspects of the possible implementation. In particular, the apparatus comprises means for performing the method of any of the above-described fourth or fourth possible implementations of the fourth aspect.

In a tenth aspect, an apparatus for data transmission is provided, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory is for storing instructions, the processor is configured to execute instructions stored by the memory to control the receiver to receive signals, and to control the transmitter to transmit signals And when the processor executes the instructions stored by the memory, the executing causes the processor to perform the method of any of the possible implementations of the first aspect or the first aspect.

In an eleventh aspect, an apparatus for data transmission is provided, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory is for storing instructions, the processor is configured to execute instructions stored by the memory to control the receiver to receive signals, and to control the transmitter to transmit signals And when the processor executes the instructions stored by the memory, the executing causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.

In a twelfth aspect, an apparatus for data transmission is provided, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory is for storing instructions, the processor is configured to execute instructions stored by the memory to control the receiver to receive signals, and to control the transmitter to transmit signals And when the processor executes the instructions stored by the memory, the executing causes the processor to perform the method of any of the possible implementations of the third aspect or the third aspect.

In a thirteenth aspect, an apparatus for data transmission is provided, the apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory and the processor are in communication with each other via an internal connection path, the memory is for storing instructions, the processor is configured to execute instructions stored by the memory to control the receiver to receive signals, and to control the transmitter to transmit signals And when the processor executes the instructions stored by the memory, the executing causes the processor to perform the method of any one of the possible implementations of the fourth aspect or the fourth aspect.

A fourteenth aspect, a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.

A fifteenth aspect, a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of any of the second aspect or the second aspect of the second aspect.

A sixteenth aspect, a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of any of the third aspect or any of the possible implementations of the third aspect.

A seventeenth aspect, a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of any of the fourth aspect or any of the possible implementations of the fourth aspect. In an eighteenth aspect, a circuit is provided for performing one of the first to fifth aspects, or performing any of the possible implementations of the first to fourth aspects.

DRAWINGS

FIG. 1 shows a schematic diagram of a communication system of an embodiment of the present application.

FIG. 2 shows a schematic flow chart of a method for performing data transmission according to an embodiment of the present application.

FIG. 3 shows a schematic flow chart of another method for data transmission according to an embodiment of the present application. FIG. 4 shows a schematic flow chart of another method for performing data transmission according to an embodiment of the present application. FIG. 5 is a schematic diagram showing the data distribution of the time domain centralized mode using the embodiment of the present application.

FIG. 6 is a schematic diagram showing the data distribution of the time domain dispersion mode using the embodiment of the present application.

FIG. 7 is a schematic diagram showing the data distribution of another time domain centralized mode using the embodiment of the present application.

FIG. 8 is a schematic diagram showing the data distribution of another time domain dispersion mode using the embodiment of the present application.

FIG. 9 is a schematic diagram showing the data distribution of another time domain centralized mode using the embodiment of the present application.

FIG. 10 is a schematic diagram showing the data distribution of another time domain dispersion mode using the embodiment of the present application.

Fig. 11 is a diagram showing the DMRS pattern of the embodiment of the present application.

Fig. 12 is a diagram showing another DMRS pattern of an embodiment of the present application.

Figure 13 is a diagram showing another DMRS pattern of an embodiment of the present application.

Fig. 14 is a diagram showing another DMRS pattern of an embodiment of the present application.

Figure 15 shows a schematic block diagram of an apparatus for performing data transmission in accordance with an embodiment of the present application.

Figure 16 shows a schematic block diagram of another apparatus for data transmission in accordance with an embodiment of the present application. Figure 17 shows a schematic block diagram of another apparatus for data transmission in accordance with an embodiment of the present application. FIG. 18 shows a schematic block diagram of another apparatus for performing data transmission in accordance with an embodiment of the present application. Figure 19 shows a schematic block diagram of another apparatus for data transmission in accordance with an embodiment of the present application. Figure 20 shows a schematic block diagram of another apparatus for data transmission in accordance with an embodiment of the present application. 21 shows a schematic block diagram of another apparatus for performing data transmission in accordance with an embodiment of the present application. Figure 22 shows a schematic block diagram of another apparatus for data transmission in accordance with an embodiment of the present application. FIG. 23 shows a schematic diagram of frequency domain interleaving according to an embodiment of the present application.

FIG. 24 shows a schematic diagram of time domain interleaving in accordance with an embodiment of the present application.

FIG. 25 shows a schematic diagram of time-frequency interleaving according to an embodiment of the present application.

FIG. 26 shows a schematic diagram of a priority time domain mapping in accordance with an embodiment of the present application.

Figure 27 is a diagram showing the DMRS pattern according to an embodiment of the present application.

Fig. 28 shows a schematic diagram of slot aggregation.

Fig. 29 shows another schematic diagram of slot aggregation.

Fig. 30 is a diagram showing the distribution of time-frequency resources of DMRS and data.

Figure 31 shows a schematic diagram of the distribution of data mapping to time-frequency resources.

Figure 32 shows a schematic diagram of the distribution of data mapping to time-frequency resources.

Figure 33 shows a schematic diagram of the distribution of data mapping to time-frequency resources.

Figure 34 shows a schematic diagram of the DMRS pattern. Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. The technical solution of the embodiment of the present application can be applied to various communication systems, for example, a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, and a wideband code division multiple access. (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS) or global interoperability for microwave access (WiMAX) communication system or future 5G system.

FIG. 1 shows a communication system 100 to which an 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. 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, or 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. , in-vehicle equipment, wearables, future

A network side device in a 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 that are 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), having Handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or future evolutionary public land mobile networks (PLMNs) Terminal equipment, etc.

FIG. 1 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.

FIG. 2 shows a schematic flow chart 200 of a method for data transmission in an embodiment of the present application. The method 200 can be applied to the communication system 100 shown in FIG. 1, but the embodiment of the present application is not limited thereto.

S210, the network device 110 determines, according to the service requirement or the application scenario of the terminal device 120, a data distribution manner for performing data transmission with the terminal device 120. The data distribution mode is used to indicate the distribution of data of the same code block on at least one time domain symbol.

S220. The network device 110 performs data transmission with the terminal device 120 according to the data distribution manner.

Specifically, the network device 110 may first according to the terminal device before performing data transmission with the terminal device 120. The service requirement or application scenario of 120 determines a data distribution manner for indicating a distribution of data of the same code block on at least one time domain symbol. The network device 110 can perform data transmission with the terminal device 120 according to the data distribution manner. For example, if the network device 110 is a transmitting end, the network device 110 may 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 The 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 the data on the time-frequency resource.

It should be understood that the foregoing service requirements may be that the data needs to be quickly demodulated, or that the data transmission performance is required, and other requirements are required. The foregoing application scenario may be that the network device 110 determines that the terminal device 120 is currently in a high-speed scene or a low-speed scene according to the channel change condition of the terminal device 120, which is not limited in this embodiment of the present application.

Therefore, the network device 110 can serve as both a transmitting end and a receiving end. When the network device 110 is acting as the transmitting end, the terminal device 120 is the receiving end, and when the network device 110 is acting as the receiving end, the terminal device 120 is the transmitting end. The foregoing method can be applied to the uplink transmission between the network device 110 and the terminal device 120, and can also be applied to the downlink transmission between the network device 110 and the terminal device 120, which is not limited in this embodiment of the present application.

In the prior art, a fixed data distribution manner is used. For example, the modulation symbols generated by the modulation are first mapped to layers, then mapped to the frequency domain, and finally mapped to the time domain, and interleaved in the process of mapping to implement the same CB. The effect of the data being distributed over the frequency domain. At the same time, one CB data is concentrated in one or several consecutive time domain symbols, which is beneficial for the receiver to perform fast demodulation. However, in some application scenarios, the receiving end may need to quickly demodulate the data sent by the transmitting end. In other application scenarios, the receiving end may not need to quickly demodulate data, but requires high data transmission performance. Since the existing data distribution manner is not flexible enough, once the application scenario is changed, when the network device 110 and the terminal device 120 perform data transmission, the existing data distribution manner cannot satisfactorily meet different service requirements.

In the method for performing data transmission in the embodiment of the present application, the data distribution manner is determined by the network device 110 according to different service requirements or application scenarios, and the data distribution manner of data transmission between the network device 110 and the terminal device 120 can be performed. Flexible configuration, select the data distribution mode suitable for the current scenario or service requirements, so as to better meet the different business needs of the receiving end.

As an alternative embodiment, FIG. 3 illustrates another method 300 for performing data transmission in an embodiment of the present application. The method 300 includes:

S310, the network device 110 determines an attribute of a demodulation reference signal DMRS according to a service requirement or an application scenario of the terminal device 120, where an attribute of the DMRS corresponds to a data distribution manner, and an attribute of the DMRS is a pattern of the DMRS. The port number of the DMRS, or the number of OFDM symbols occupied by the DMRS signal, the data distribution manner is used to indicate the distribution of data of the same code block on at least one time domain symbol.

S320. The network device 110 sends the attributes of the DMRS to the terminal device 120.

Correspondingly, the terminal device 120 receives the attribute of the DM RS sent by the network device 110; S330, the terminal device 120 determines, according to the attribute of the DMRS, data for data transmission with the network device 110. Distribution method

After the terminal device 120 determines the data distribution mode, the terminal device 120 performs data transmission with the network device 110 according to the data distribution manner.

Specifically, the DMRS is used in the embodiment of the present application, because the network device 110 and the terminal device 120 need to determine a demodulation reference signal (DMRS) pattern or a DMRS port number when performing data transmission. The DMRS port number is collectively referred to as the attribute of the DMRS, and the attributes of the DMRS are bound to the data distribution mode configured by the network device 110, that is, the attributes of different DMRSs correspond to different data distribution modes. In this way, the network device 110 notifies the terminal device 120 of the attribute of the DMRS used when the terminal device 120 performs data transmission, and the terminal device 120 can determine the data used for data transmission with the network device 110 according to the attribute of the DMRS. The manner of distribution, thereby transmitting data to the network device 110 or receiving data transmitted by the network device 110, according to the manner in which the data is distributed.

It should be understood that the network device 110 may send the attributes of the DMRS to the terminal device 120 through multiple signaling, for example, downlink control information (DCI), radio resource control (RRC) signaling, media access. The media access control (MAC) layer control element (CE) and the like are not limited in this embodiment of the present application.

Specifically, the network device 110 and the terminal device 120 may determine the data distribution manner according to the preset first correspondence, the different DMRS patterns correspond to different mapping manners, or different DMRS port numbers correspond to different mapping manners. The DMRS pattern or DMRS port number used by the network device 110 and the terminal device 120 for data transmission is known. For example, the first DMRS pattern or the first DMRS port number, the transmitting end and the receiving end may determine, according to the first DMRS pattern or the first DMRS port number, the first DMRS pattern or the first A data distribution method corresponding to a DMRS port number. For example, the network device 110 and the terminal device 120 can agree that the port number xl-yl indicates the data distribution mode of the port number corresponding to the time domain set, and the port number x2-y2 indicates that the port number corresponds to the time domain dispersed data distribution manner, but the present application The embodiment does not limit this.

It should be understood that the attributes of the DMRS may be a DMRS pattern, a port number of the DMRS, or a number of OFDM symbols occupied by the DMRS signal, and may be a scrambling code or an orthogonal sequence of the DMRS. Not limited.

As an alternative embodiment, FIG. 4 illustrates another method 400 for performing data transmission in an embodiment of the present application. The method 400 includes:

S410, the network device 110 may determine the indication information according to the service requirement or the application scenario of the terminal device 120, where the indication information is used to indicate a data distribution manner, where the data distribution manner is used to indicate that the data of the same code block is in at least one time domain. Distribution on the symbol;

S420, the network device 110 sends the indication information to the terminal device 120.

Correspondingly, the terminal device 120 receives the indication information sent by the network device 110;

S430, the terminal device 120 determines, according to the indication information, a data distribution manner for performing data transmission with the network device 110.

Specifically, the network device 110 may directly indicate, by using the indication information, the data distribution manner of the data transmission with the terminal device 120 to the terminal device 120, and the terminal device 120 may directly determine, according to the indication information, the data transmission used by the network device 110. The data is distributed in such a manner that data is transmitted to the network device 110 or received by the network device 110 according to the data distribution manner.

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 120 by using other signalings than the foregoing three types of signaling, which is not limited in this embodiment of the present application.

As an optional embodiment, the data distribution manner is a time domain decentralized manner or a time domain centralized manner, where The time domain decentralization manner is used to indicate that data of the same code block is distributed over a plurality of time domain symbols, wherein the time domain concentration mode is used to represent that data of the same code block is concentrated on at least one consecutive time domain symbol. distributed.

Specifically, the data distribution manner may be a time domain scatter mode or a time domain concentrating mode, where the time domain scatter mode means that data from the same code block is distributed in the time domain, and the time domain concentrating mode refers to Data from the same code block is concentrated in the time domain. For the data distributed in the time domain centralized mode, the receiving end can quickly demodulate it, which can meet the application scenarios that need to quickly demodulate the data. For the data distributed in the time domain decentralized manner, the transmission reliability is higher and the transmission performance is better.

FIG. 5 is a schematic diagram showing data distribution in a time domain centralized manner using the embodiment of the present application. In FIG. 5, each CB is concentrated as much as possible in one or more consecutive time domain symbol distributions, thereby ensuring the receiving end pair. The data is quickly demodulated. FIG. 6 is a schematic diagram showing the data distribution of the time domain dispersion mode in the embodiment of the present application. In FIG. 6, each CB is dispersed as much as possible on different time domain symbols, which can greatly improve the transmission performance.

It should be understood that the foregoing time domain concentrating mode and the time domain scatter mode may generate different results in the case that the network device 110 uses different processing manners for sending data, which is not limited by the embodiment of the present application.

As an optional embodiment, the time domain concentration mode is used to indicate that in all code blocks, the initial location index satisfies the first data and the second data, and the time domain symbol index satisfies ^≤ " ² .

In particular, modulation symbols or bits from different CBs do not cross. That is, regardless of the modulation symbol or the bit, in the final mapping result, any time domain symbol is one CB and another CB. It should be understood that such a result occurs because the network device 110 does not perform bit-level interleaving of the data to be transmitted, or does not perform interleaving at the modulation symbol level, but may perform CB level interleaving. The above initial position index is an index of data in the code block without any processing on the code block.

For ease of understanding, the embodiments of the present application are described in detail below with reference to FIGS. 7 and 8. It is assumed that Q1 and Q2 are two data from the same CB, that is, modulation symbols or bits, and their position indices in CB are respectively, and in the final mapping result, the time domain symbol in which Q1 is located is the first, and Q2 is located. Time domain symbol is One.

If there is "ι ^≤ " ² for any satisfied Ql, Q2 in any CB, then such data distribution mode belongs to the time concentration mode, as shown in Fig. 7.

If there are satisfied Q1, Q2, but there is a case of "ι >" ² , then such data distribution mode belongs to the time dispersion mode, as shown in FIG.

As an optional embodiment, the time domain concentration mode is used to indicate that in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the first time domain symbol. The maximum value of the initial position index of the distributed data is not equal to the maximum value of the initial position index of the data distributed in the resource unit of the first code block, and the resource unit is a basic unit for resource allocation of the scheduling user, All time domain symbols within a resource unit are the first time domain symbols. The resource unit defined in the embodiment of the present invention may be a scheduling resource. The scheduling resource includes a plurality of OFDM symbols in the time domain, and a plurality of OFDM symbols in the time domain, where the multiple OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe; or

In particular, modulation symbols or bits from different CBs may cross. That is, in the final mapping result, there is a certain time domain symbol, and modulation symbols or bits from different CBs have an intersection phenomenon. It will be appreciated that the result of this is due to the bit-level interleaving of the data to be transmitted by the network device 110 or the interleaving of the modulation symbol level.

For ease of understanding, the embodiments of the present application will be described in detail below with reference to FIGS. 9 and 10. For a time domain symbol, if it contains data from P ( P ≥ 1 ) different CBs, assume that these data are CB 1 , CB 2, ..· , CB P, respectively. The positional order of CB p ( 1 < ρ <= Ρ ) on the time domain symbol (i.e., the order of the respective modulation symbols or bits in the CB before the crossing) is the index of the initial position corresponding to the rearmost modulation symbol or bit being xp. In addition, the initial modulation symbol or the initial position index corresponding to the bit of the entire CB p is Cp (that is, the initial modulation symbol or the initial position index corresponding to the bit on a certain layer is Cp).

For any one? For the time domain symbols ≥1, in the above P CBs, at least P-1 CB xp are equal to Cp, then the data distribution mode belongs to the time diversity mode, as shown in Fig. 9.

For any one? For the time domain symbol ≥ 1, in the above P CBs, there are less than P-1 CB xp equal to Cp, then such data distribution mode belongs to time dispersion mode, as shown in Fig. 10.

As an optional embodiment, the time domain dispersion manner includes:

Specifically, the time domain dispersed data distribution manner may include different degrees of dispersion, which may be measured by the number of time domain symbols distributed by data from the same CB. Data from the same CB may be distributed over all time domain symbols in a resource unit, or may be distributed over all time domain symbols of the same time slot in a resource unit. It can also be distributed on a part of the time domain symbols in the resource unit, which is not limited by the embodiment of the present application. It should be understood that the above resource unit (RU) can be used as a basic unit for scheduling user allocation of resources. A resource unit occupies multiple consecutive subcarriers in the frequency domain and multiple consecutive symbols (OFDM symbols) in the time domain.

It should be understood that the foregoing network device 110 may determine whether the foregoing data distribution manner is a time domain scatter mode or a time domain concentrating mode in a plurality of manners, which is not limited by the embodiment of the present application.

As an optional embodiment, if the application scenario is that the demodulation result needs to be fed back in the current resource unit, the attribute of the DMRS corresponds to the time domain centralized mode, and the resource unit is a basic unit for resource allocation of the scheduling user. ;

Specifically, in the case that the demodulation result needs to be fed back in the current resource unit (which may be the current frame or the current scheduling resource), the network device 110 may use the attribute of the DMRS corresponding thereto, and the attribute of the DMRS may be Corresponding to the time domain concentration mode, FIG. 11 and FIG. 12 are schematic diagrams of the DMRS pattern of the demodulation result fed back in the sub-frame, and the data distribution manner corresponding to the DMRS pattern shown in FIG. 11 and FIG. 12 may be a time domain concentration mode. . On the other hand, in the case that the demodulation result does not need to be fed back in the current frame, the network device 110 can use the attribute of the corresponding DMRS, and the attribute of the DMRS can correspond to the time domain dispersion mode. FIG. 13 and FIG. 14 show that the demodulation result is not A schematic diagram of the DMRS pattern that needs to be fed back in the subframe, and the data distribution manner corresponding to the DMRS pattern shown in FIG. 13 and FIG. 14 may be a time domain dispersion manner.

As an optional embodiment, when the pattern of the DMRS is that the DMRS occupies a time domain symbol, the pattern of the DMRS corresponds to the time domain concentration mode;

Specifically, the network device 110 has determined the DMRS pattern. In a case where the pattern of the DMRS is that the DMRS occupies one time domain symbol, the pattern of the DMRS corresponds to the time domain concentration mode; the pattern of the DMRS is DMRS. If at least two time domain symbols are occupied, if there is no data transmission between any two time domain symbols occupied by the DMRS pattern, that is, there is no data transmission between the time domain symbols of any two DMRSs, The DMRS pattern may be in a time domain centralized manner. FIG. 11 is a schematic diagram of a DMRS pattern of all DMRS transmissions before data transmission, and the data distribution manner corresponding to the DMRS pattern shown in FIG. 11 may be a time domain centralized manner; There is data transmission between at least two time domain symbols occupied by the DMRS, that is, there is data transmission between the time domain symbols of the two DMRSs, then the DMRS pattern may correspond to the time domain dispersion manner, and the DMRS of FIG. 12 to FIG. 14 The pattern diagrams all have DMRS transmissions after data transmission. Therefore, the data distribution corresponding to the three DMRS patterns The modes can all be time-domain decentralized.

In summary, the correspondence between the data distribution mode and the DMRS pattern can be applied in two different ways.

Manner 1: In the DMRS pattern (Fig. 11) where there is no data transmission between transmissions applicable to any two DMRSs, the time domain concentration mode is adopted; the data transmission exists between transmissions suitable for the presence of two DMRSs. (Fig. 12, Fig. 13 and Fig. 14), the time domain is dispersed. As a supplement to the above implementation, please refer to FIG. 34, if the DMRS pattern is continuous, there is no transmission of data between the transmissions of any two DMRSs. In the case where the DMRS pattern, or the DMRS occupies only one OFDM symbol, a DMRS of another pattern appears periodically, or suddenly, that is, there is transmission of data between the transmissions of the two DMRSs, in which case You can switch from the time domain centralized mode to the time domain distributed mode, and you can continue to use the time domain centralized mode to maintain consistency. Manner 2: In the DMRS pattern (Fig. 11 and Fig. 12) that is applied to the demodulation result in the current resource unit feedback, the time domain concentration mode is adopted; in the DMRS pattern (the DMRS pattern that is not required to be fed back in the current resource unit for demodulation results) In Figure 13 and Figure 14), the time domain dispersion method is used.

It should be understood that the method is configured by the network device 110, which is not limited by the embodiment of the present application, depending on the application scenario or the service requirement of the terminal device 120.

As an optional embodiment, the method further includes:

The network device 110 determines, according to the service requirement or the application scenario of the terminal device 120, a frame structure used for data transmission, where the frame structure corresponds to the data distribution manner;

Correspondingly, the terminal device 120 determines a data distribution manner for performing data transmission with the network device 110 according to a frame structure used for data transmission with the network device 110, where the data distribution manner is used to represent data of the same code block. Distribution on at least one time domain symbol;

The terminal device 120 performs data transmission with the network device 110 according to the data distribution manner. It should be understood that the frame structure may be pre-agreed by the network device 110 and the terminal device 120, or may be sent by the network device 110 to the terminal device 120 to indicate the frame structure used for data transmission. This example does not limit this.

As an optional embodiment, if the application scenario of the terminal device 120 is a demodulation result that needs to be fed back in the current resource unit, the frame structure corresponds to the time domain centralized mode, and the resource unit allocates resources for the scheduling user. Basic unit

If the application scenario of the terminal device 120 is that the demodulation result does not need to be fed back in the current resource unit, the frame structure corresponds to the time domain dispersion mode.

Specifically, the network device 110 can directly directly according to the service of the terminal device 120.

Requirements or application scenarios, determine the frame structure to be used, and determine the correspondence between the frame structure and the way data is distributed. If the demodulation result needs to be fed back in the current resource unit, the frame structure may correspond to the time domain concentration mode. If the demodulation result does not need to be fed back in the current resource unit, the frame structure may correspond to the time domain dispersion mode.

The following summarizes the data distribution methods as follows:

Table 1

There are some data distribution methods in Table 1, and the code blocks are not interleaved. Or use frequency domain interleaving, time domain interleaving, or time Frequency interleaving. Frequency domain interleaving, that is, data of one code block and data of other code blocks are interleaved within one OFDM symbol. That is, interleaving is performed in the frequency domain of one OFDM symbol. Referring to FIG. 23, the data such as CB 0 is divided into multiple points, but both are distributed on the same OFDM symbol. The frequency domain interleaving CB can also be on two or more symbols. The feature is that the modulation symbols from the respective CBs are kept on the OFDM symbols before interleaving when performing frequency domain interleaving.

Time domain interleaving refers to interleaving data of one code block with data of other code blocks on subcarriers having the same frequency in a plurality of OFDM symbols. As shown in Fig. 24, by time domain interleaving, data of one code block is distributed over a plurality of OFDM symbols. The interleaving of the time domain may be in the range of two or more time domain symbols, or may be a slot. In the scenario of slot aggregation, the range of interleaving may also be multiple slots after aggregation. In a wireless system employing a code block group (CBG), the time domain interleaving can be within a CBG.

The time-frequency interleaving is that the data of one code block is in the frequency domain, and is interleaved with other code blocks in the time domain. As shown in FIG. 25, by time-frequency interleaving, data of one code block is distributed over a plurality of subcarriers in the frequency domain and a plurality of OFDM symbols in the time domain. As with code block CB0, the data is distributed over subcarriers of different frequencies, as well as different OFDM symbols. In the time-frequency interleaving, the time domain may also be two or more time domain symbols, or one or more time slots, or in a slot aggregation scenario, one or more aggregated time slots, or Within a CBG.

In Table 1, when the data distribution mode of the code block is arranged, it may be a priority frequency domain mapping and a time domain mapping manner. It can also be a priority time domain mapping, a way of mapping in the frequency domain. Here, the priority frequency domain mapping, and the time domain mapping method, the priority does not refer to the sequence in time series. Rather, when arranging the data of one or more code blocks on the time-frequency resource, the data of the one or more code blocks is preferentially arranged in the frequency domain of a time domain symbol. Then if there is still data, arrange it on the next time domain symbol that is continuous in the time domain. As shown in FIG. 5, one of the OFDM symbols has CBO, CB1, CB2, and CB3, and then CB4, CB5, CB6, and CB7 are continuously placed on the next OFDM symbol in the time domain.

Similarly, the priority time domain mapping, the frequency domain mapping does not refer to the sequence in time series, but preferentially occupies thousands of time domain symbols when arranging the distribution of data of one code block or multiple code blocks on time-frequency resources. The first group of subcarriers having the same frequency and then occupying the next group of subcarriers in the frequency domain are occupied by the thousands of time domain symbols. As shown in Figure 24, M, N, T, Y, W, and V are all positive integers. Interleaving is not performed between the code blocks shown in FIG. Multiple Code Blocks A set of identical frequency subcarriers over a plurality of time domain symbols are prioritized in order. In this embodiment, there are M+1 time domain symbols. After the first group of subcarriers are preferentially filled, the remaining code blocks are sequentially arranged in the M+1 time domain symbols in sequence, and are consecutive on the next group of subcarriers in the frequency domain.

As shown in Table 1 above, different interleaving methods, or non-interleaving, combined with priority frequency domain mapping, re-time domain mapping, or preferential time domain mapping, and frequency domain mapping, constitute multiple data distribution methods. . For example, the priority frequency domain mapping and the time domain mapping are not interleaved, that is, the time domain centralized distribution mode 1 in Table 1. On the basis of the time domain centralized distribution mode 1, the frequency domain interleaving is performed, and the time domain is distributed in a centralized manner. The data of the code block in the time domain centralized distribution mode 2 is interleaved in the frequency domain of the same time domain symbol. As shown in FIG. 23, data of the same code block, such as CBO, CB1, and CB2, are collectively distributed on the same time domain symbol, and the data of CB0 and the data of CB1 and CB2 are interleaved on the time domain symbol.

In addition to the above-described time domain centralized distribution modes 1 and 2, other combinations are called time domain distributed distribution methods. Specifically, the priority time domain mapping, the frequency domain mapping mode, and the time domain interleaving are used, and the time domain distributed mode 1 is used. As shown in Fig. 26, M, N, T, Y, W, and V are all positive integers. No interleaving is performed between the code blocks shown in FIG. A plurality of code blocks preferentially prioritize a set of subcarriers of the same frequency on a plurality of time domain symbols. In this embodiment, there are a total of M+1 time domain symbols. After the first group of subcarriers are preferentially filled, the remaining code blocks are sequentially arranged in the M+1 time domain symbols and sequentially on the next group of subcarriers in the frequency domain. If it is used later The frequency interleaving method is a time domain distributed distribution method. When the mapping of the priority frequency domain is used, and then the time domain mapping is performed, and the time-frequency interleaving is performed, the time domain dispersion mode 2 is used. The priority time domain mapping and the frequency domain mapping are not interleaved, and the time domain is distributed. The priority time domain mapping, the frequency domain mapping method, and the frequency domain interleaving are used as the time domain distributed distribution mode 4. The priority time domain mapping, the frequency domain mapping method, and the time domain interleaving are used as the time domain distributed distribution mode 5. The priority time domain mapping, the frequency domain mapping method, and the time-frequency interleaving are used as the time domain distributed distribution mode 6.

The different data distribution modes described above have different characteristics. The network device can select a data layout manner and the terminal device 120 to perform data transmission according to the application scenario or service requirement of the terminal device 120. As in the above embodiment, the corresponding data distribution mode is determined according to the attributes of the demodulation reference signal DMRS. The terminal device 120 also determines the data distribution mode used by the network device 110 according to the DMRS attribute, thereby performing data transmission with the network device 110. Other solutions are also disclosed in the above embodiments. For example, if the demodulation result needs to be fed back in the current resource, the network device 110 uses the time domain centralized mode, and vice versa.

The network device 110 may determine one of the data distribution modes in the table 1 according to the DMRS attribute or other factors, the current domain centralized distribution mode 1 or 2, or the time domain distributed distribution mode 1, 2, 3, 4, 5 or 6. The specific factors and corresponding data distribution methods are added below.

Supplementary scheme 1: Referring to FIG. 11, in the case that the demodulation result, that is, ACK/NACK, needs to be fed back in the current scheduling resource or time slot, and in the case where the pattern of the DMRS is DMRS occupying at least two time domain symbols, If there is no data transmission between any two time domain symbols occupied by the DMRS, the data distribution modes (1), (2), and the distribution mode 1 or 2 in the immediate domain concentration are used. Time-concentrated distribution mode 1 Do not interweave, realize the single, suitable for small bandwidth. The time-concentrated distribution mode 2 can obtain the frequency domain diversity gain by frequency domain interleaving.

Supplementary scheme 2: Please refer to FIG. 12, the demodulation result, that is, the ACK/NACK, needs to be fed back in the current scheduling resource, and in the case that the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, the DMRS occupies If there is data transmission between any two time domain symbols, one of the time domain distributed distribution modes 1-6 is used. When the DMRS pattern is that the DMRS occupies at least two time domain symbols, and there is data transmission between any two time domain symbols occupied by the DMRS, the terminal device 120 moves fast, and is dispersed in the time domain. Distribution mode, you can get time diversity gain. As a possible implementation manner, in this condition, the time domain centralized distribution mode 1 may also be adopted, which is to consider that the ACK/NACK needs to be fed back in the current scheduling resource, and there is a requirement for fast demodulation, and at this time, the DMRS occupies two There is data transmission between time domain symbols, channel estimation takes time, which is not conducive to fast demodulation, so in order to save time, no interleaving is performed. .

Supplementary scheme 3: Referring to FIG. 13 , in the case that the demodulation result does not need to be fed back in the current scheduling resource, and in the case that the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, the DMRS occupies any two times. If there is data transmission between the domain symbols, one of the time domain distributed modes 1-6 is used. In a case where the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, and there is data transmission between any two time domain symbols occupied by the DMRS, the terminal device 120 is described as moving fast. Time dispersion can obtain time diversity gain.

Supplementary scheme 4: Referring to FIG. 27, in the case that the demodulation result does not need to be fed back in the current scheduling resource, and the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, any two time domains occupied by the DMRS There is no transmission of data between symbols, and one of the time domain centralized distribution methods 1-2 is used. At this time, considering the DMRS signal concentration, the terminal device 120 does not move fast, and the time diversity gain effect is not strong, so the time domain centralized distribution mode 1-2 is used. As a possible implementation manner, one of the time domain distributed distribution methods 1-6 can also be used. Time division One of the scattered modes 1-6 is to consider that although the time diversity gain is not obvious in this case, since the demodulation result does not need feedback in the current scheduling resource, the time-distributed manner can be combined with the data distribution of another scenario. The method is consistent and easy to implement. Another scenario mentioned here refers to the case where the DMRS occupies at least two time domain symbols, and there is no data transmission between any two time domain symbols occupied by the DMRS.

Supplementary scheme 5: In addition to determining the data distribution manner according to the DMRS attribute and the frame structure, the data distribution manner may also be determined according to a channel state information reference signal (CSI-RS). In general, when the terminal device 120 is in a high-speed moving scenario, the CSI-RS density will be relatively high. Therefore, one of the time domain distributed distribution modes 1-6 can be used in a scene with high CSI-RS density, so that the mobile scene can be used to obtain a better time diversity gain by using the time domain dispersion method. On the other hand, in the case where the CSI-RS density is low, one of the time domain concentrated distribution modes 1-2 is used. The lower density indicates that the terminal device 120 is in a low-speed moving scene. In this scenario, the time diversity gain is not obvious, and the time domain centralized distribution mode is adopted, which facilitates rapid demodulation.

Supplement 6: The network device 110 can also determine the data distribution mode by the configuration of slot aggregation. There are two ways to time slot aggregation. Referring to FIG. 28, a transport block (TB) is carried on multiple time slots after multiple aggregations. Or referring to Fig. 29, a plurality of transport blocks are carried and aggregated on a plurality of time slots. When the demodulation result does not need to be fed back in the current scheduling resource, and the slot aggregation is not performed, the network device 110 uses the distribution mode 1 or 2 in the time domain set. On the other hand, when the demodulation result does not need to be fed back in the current scheduling resource, and the slot aggregation mode is used, the network device 110 uses the time domain distributed distribution mode.

Supplementary Note 7: If the Hybrid Automatic Repeat reQuest (HQQ) is used to retransmit the CBG, the distribution in the time domain set is 1 or 2. For the HARQ retransmission of the CBG, if the data distribution method of the time domain is dispersed, if there are many CBG errors after an error, the meaning of the CBGHARQ retransmission is lost. If HARQ is retransmitted for a code word (CW), then one of the distribution patterns 1-6 of the time domain dispersion is used.

Supplement 8: 5G's new radio technology (New Radio, NR) supports two kinds of carrier waveforms, Discrete Fourier Transformer Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM). If DFT-s-OFDM is used, one of the time domain dispersed distribution modes 1-6 is used. If CP-0FDM is used, one of the distribution patterns 1-2 in the time domain set is used.

Supplement 9: A CW in NR can be mapped to 4 layers. The network device 110 can determine the distribution of data used based on the number of layers corresponding to a CW. When the number of layers corresponding to a CW is 1, the data distribution method without interleaving is used, such as the time domain centralized distribution mode 1 or the time domain distributed distribution mode 5 . When the number of layers corresponding to the CW is 2, 3, or 4, the frequency domain interleaving time-domain centralized distribution mode 2 or the time domain distributed distribution mode 4 is used. As a possible implementation manner, when the number of layers corresponding to the CW is 1 or 2, a non-interleaved data distribution manner, such as a time domain centralized distribution mode 1 or a time domain distributed distribution mode 5 is used. When the number of layers corresponding to the CW is 3, or 4, the frequency domain interleaving time domain is distributed in a centralized manner 2 or in a time domain distributed manner 4 . The premise of obtaining gain by frequency domain interleaving and time-frequency interleaving is that there are multiple CBs, the number of layers is small, and the probability of occurrence of multiple CBs in one OFDM symbol or in several OFDM symbols is small; multiple CBs appear in multiple layers, and the probability is large. Therefore, the number of layers is small, not interleaved, which is convenient to implement; when there are many layers, the gain is obtained by interleaving.

Supplement 10: In data transmission, data transmission and retransmission can use the same data distribution method. As a possible embodiment, new transmission and retransmission can also use different data distribution methods. For example, the newly transmitted data uses a non-interleaved data distribution method, such as a time domain centralized distribution mode 1 or a time domain distributed distribution mode 3 . Retransmitted data The data distribution pattern of the domain interleaving, such as the time domain centralized distribution mode 2 or the time domain distributed distribution mode 4. As a possible embodiment, the retransmitted data may also be in a time domain interleaving manner, such as time domain distributed distribution patterns 1, 2, 7, and 8. In the same way, the retransmission and the new transmission are implemented in the same way; the retransmission and the interleaving are used, because the channel has been retransmitted, indicating that the channel condition is bad, and the interleaving needs to be used to improve the retransmission performance.

Supplement 11: When the DMRS occupies 3 or more time domain symbols, and there is data transmission between the 3 or more time domain symbols, the time domain dispersed distribution mode 1-6 One. Referring to FIG. 30, the DMRS occupies at least a first time domain symbol, a second time domain symbol, and a third time domain symbol. Data is transmitted between the first time domain symbol and the second time domain symbol, and data is also transmitted between the second time domain symbol and the third time domain symbol. And the first time domain symbol, the second time domain symbol, and the third time domain symbol are sequentially arranged in the time domain. In this case, one of the distribution patterns 1-6 of the time domain dispersion is used. Since DMRS occupies three or more time-domain symbols and there is data transmission between them, in this case, it is difficult to achieve fast demodulation, so the time-distributed data distribution method is used to obtain performance gain.

Supplementary scheme 12: In the case that the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, and there is data transmission between any two time domain symbols occupied by the DMRS, and the HARQ retransmission is for the codeword (codeword , CW) for retransmission, then one of the time domain dispersion distribution modes 1-6 is used.

Supplementary Note 13: When the DMRS demodulation result is not in the current scheduling resource feedback, and the HARQ retransmission is for the codeword

(codeword, CW) for retransmission, using one of the time domain dispersion distribution methods 1-6.

Supplementary scheme 14: When the DMRS demodulation result is not fed back by the current scheduling resource, and the HARQ retransmission is retransmission for the codeword, and the DMRS pattern is that the DMRS occupies at least two time domain symbols, and the DMRS occupies The transmission of data between any two time domain symbols is one of the time domain dispersion distribution modes 1-6

Supplementary scheme 15: In the case that the DMRS pattern is that the DMRS occupies at least two time domain symbols, and there is data transmission between any two time domain symbols occupied by the DMRS, and the HARQ is retransmitted for the CBG, then Time-distributed distribution, and the time dispersion range is within a CBG.

Supplementary scheme 16: If the demodulation result is not in the current scheduling resource feedback and the HARQ is retransmitted for the CBG, the time-distributed distribution mode is adopted, and the time dispersion range is within one CBG.

Supplementary scheme 17: The demodulation result is not fed back by the current scheduling resource. If the DMRS pattern is that the DMRS occupies at least two time domain symbols, and there is data transmission between any two time domain symbols occupied by the DMRS, and HARQ It is a retransmission for CBG, then it uses time-distributed distribution, and the time dispersion is within a CBG.

In the foregoing various solutions, such as the supplementary solution 1-17, the network device 110 does not need to notify the terminal device 120 through special indication information, and the terminal device 120 can obtain which data distribution mode the network device 110 uses according to some factors. . These factors include, whether the demodulation result in the above embodiment requires feedback on current scheduling resources, DMRS attributes, whether slot aggregation, CSI-RS density, data retransmission granularity, and the like. The above terminal device 120 can obtain the data distribution manner used by the network device 110 from among these factors. As a possible embodiment, the terminal device 120 may obtain the data distribution manner used by the network device 110 from the above factors, and may also combine the indication information to determine the data distribution manner used by the network device 110. For example, the terminal device 120 determines the distribution pattern of the time domain dispersion according to the above factors. Then, the indication information may be used to indicate that the terminal uses one of the time domain dispersion and dispersion modes 1-6.

As an example, there are three ways to map data to time-frequency resources. The first type of mapping is to perform spatial mapping first, then frequency domain mapping, and finally time domain mapping. As shown in Fig. 31, the vertical direction represents the frequency domain, and the horizontal direction represents the time domain. The number in each time-frequency resource unit represents the order in which the data is scheduled. Like the first The data is placed in the time-frequency resource 1 of layer 1, the second data is placed in the time-frequency resource 2 of layer 2, the third data is placed in the time-frequency resource 3 of layer 3, and so on. The second mapping method also preferentially performs spatial mapping, and then performs time domain mapping, followed by frequency domain mapping. As shown in Fig. 32, similar to Fig. 31, the numbers in the time-frequency resource grid in the figure represent the order in which the data is arranged. The third mapping method prioritizes the time domain, then the frequency domain, and finally the layer mapping for data mapping. Referring to Figure 33, Figure 33 is similar to Figure 31, in which the data in the time-frequency resource grid represents the order in which the data is arranged.

The three mapping modes mentioned above, the first mapping mode belongs to the time domain centralized mode, and the second mapping mode and the third mapping mode belong to the time domain decentralized mode. The network device 110 can determine whether to use the time domain concentration or the time domain dispersed data distribution manner according to the above factors. However, there are a plurality of time-distributed modes (the second mapping mode and the third mapping mode in the embodiment), and the network device 110 can send a notification to inform the terminal device 120 which time-distributed one is used. The way data is distributed. In the above supplementary solution 1-17, when a plurality of time domain centralized data distribution modes or a plurality of centralized data distribution modes are available, the network device 110 and the terminal device 120 may be set by default, and one of them is used by default. Or by issuing a notification message, it is indicated which one of the terminal devices 120 specifically uses.

After the data distribution mode is determined, the data transmission between the network device 110 and the terminal device 120 can be classified into the following two cases.

Case 1, downlink transmission

As an optional embodiment, the network device 110 performs data transmission with the terminal device 120 according to the data distribution manner, including: the network device 110 processes the data to be sent according to the data distribution manner; The network device 110 sends the processed data to be sent to the terminal device 120.

Specifically, when the network device 110 is configured as the sending end, the network device 110 may process the data to be sent according to the data distribution manner, and then send the processed data to be sent to the terminal device 120, so that the data is satisfied. Distribution.

As an optional embodiment, the network device 110 processes the data to be sent according to the data distribution manner, and includes: the network device 110 performs interleaving modulation symbols on the to-be-sent data according to the data distribution manner. Interlace. In the embodiment of the present application, the network device is subjected to a series of steps, such as channel coding, code block cascading, modulation mapping, layer mapping, precoding, and resource mapping, before being sent. The processing may be performed on the data to be sent, and the data to be sent may be interleaved in a bit-level manner, and the data to be transmitted may be interleaved at the symbol level.

Specifically, the network device 110 may be executed according to any one or more of the following steps, which is not limited by the embodiment of the present application.

(1) After the network device 110 performs channel coding on the data to be transmitted, a code block is generated, and the data to be transmitted is in the form of a bit stream, and the network device 110 may select a data distribution manner according to the data distribution manner. The interleaving method interleaves the bit stream to which the data is transmitted. For example, if the data distribution mode is a time domain centralized mode, the network device 110 may interleave the bit stream of the data to be sent, so that the data to be sent can generate the data of the same code block in the time domain after performing resource mapping. The effect of the centralized distribution; if the data distribution mode is the time domain dispersion mode, the network device 110 may interleave the bit stream of the data to be transmitted, so that the data to be transmitted can generate the same code block after performing resource mapping. The effect of data being distributed across the time domain. The specific interleaving method is various, and the embodiment of the present application does not limit this.

(2) after the network device 110 performs modulation mapping on the data to be transmitted, a modulation symbol is generated, and the network device 110 may select, according to the foregoing data distribution manner, interleaving the modulation symbols of the data to be transmitted in an interleaving manner corresponding to the data distribution manner. For example, if the data distribution mode is a time domain centralized mode, the network device 110 may interleave the modulation symbols of the data to be sent, so that the data to be transmitted can generate data of the same code block in the time domain after performing resource mapping. The effect of the centralized distribution; if the data distribution mode is the time domain dispersion mode, the network device 110 may interleave the modulation symbols of the data to be transmitted, so that the data to be transmitted can generate the same code block after performing resource mapping. The effect of data being distributed across the time domain.

(3) After the network device 110 performs layer mapping on the data to be transmitted, the network device 110 may select the interleaving manner corresponding to the data distribution mode to interleave the modulation symbols of the data to be transmitted according to the data distribution manner. For example, if the data distribution mode is a time domain centralized mode, the network device 110 may interleave the modulation symbols of the data to be sent, so that the data to be transmitted can generate data of the same code block in the time domain after performing resource mapping. The effect of the centralized distribution; if the data distribution mode is the time domain dispersion mode, the network device 110 may interleave the modulation symbols of the data to be transmitted, so that the data to be transmitted can generate the same code block after performing resource mapping. The effect of data being distributed across the time domain.

It should be understood that, since the bit-level interleaving and the symbol-level interleaving respectively correspond to different computational complexity, different terminal devices 120 have different capabilities. If the computational complexity is too high, the terminal device 120 may not correctly receive the data sent by the network device 110. . Therefore, the network device 110 uses the specific interleaving method described above depending on the deinterleaving capability of the terminal device 120.

In a possible implementation manner, the terminal device 120 may report its own capability information to the network device 110, and the network device 110 may select an interleaving manner that matches the capability of the terminal device 120 according to the capability information of the terminal device 120. The application embodiment does not limit this.

As an optional embodiment, the processing, by the network device 110, the data to be sent according to the data distribution manner, includes: the network device 110, according to the data distribution manner, using the data distribution manner The resource mapping rule performs resource mapping on the to-be-sent data.

Specifically, the network device 110 may perform resource mapping according to the data distribution manner according to the data distribution manner, and perform resource mapping on the data to be sent according to the data distribution manner. For example, if the data distribution mode is a time domain centralized mode, the network device 110 may select a resource mapping manner that can generate a time-distributed effect of data of the same code block; if the data distribution mode is a time domain distributed mode, the network The device 110 may select a resource mapping manner that is capable of generating a temporally distributed effect of data of the same code block.

Correspondingly, the terminal device 120 can directly receive the data sent by the network device 110 according to the data distribution manner because the data distribution manner can be determined.

Case 2, uplink transmission

As an optional embodiment, the terminal device 120 performs data transmission with the network device 110 according to the data distribution manner, and includes:

The terminal device 120 processes the data to be sent according to the data distribution manner;

The terminal device 120 sends the processed data to be sent to the network device 110.

Similarly, when the terminal device 120 functions as the transmitting end, the data to be sent may be processed according to the data distribution manner, and the processed data to be transmitted is sent to the network device 110, so that the data satisfies the determined distribution.

As an optional embodiment, the terminal device 120 processes the data to be sent according to the data distribution manner, and includes: The terminal device 120 performs interleaving processing on the to-be-sent data according to the data distribution manner, where the interleaving process includes interleaving a bit stream of the to-be-sent data and/or a modulation symbol for the to-be-sent data. Interlace.

As an optional embodiment, the terminal device 120 processes the data to be sent according to the data distribution manner, and includes:

The terminal device 120 performs resource mapping on the to-be-sent data according to the data distribution manner by using a resource mapping rule corresponding to the data distribution manner.

It should be understood that the processing of the data to be sent when the terminal device 120 functions as the transmitting end is the same as the processing of the data to be sent when the network device 110 is the transmitting end, and details are not described herein again.

It should be understood that the size of the sequence numbers of the above processes does not imply a sequence of executions, and the order of execution of the processes should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiments of the present application.

A method for performing data transmission according to an embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 14. Hereinafter, a device for performing data transmission according to an embodiment of the present application will be described in detail with reference to FIG. 15 and FIG. .

FIG. 15 shows an apparatus 1500 for performing data transmission according to an embodiment of the present application. The apparatus 1500 includes: a determining unit 1510, configured to determine, according to a service requirement or an application scenario of the terminal device 120, with the terminal device 120. Data distribution manner of data transmission, wherein the data distribution manner is used to indicate distribution of data of the same code block on at least one time domain symbol;

The transmitting unit 1520 is configured to perform data transmission with the terminal device 120 according to the data distribution manner. The apparatus for performing data transmission in the embodiment of the present application determines the data distribution manner according to different service requirements or application scenarios by the network device 110, and can flexibly distribute the data distribution manner of the data transmission between the network device 110 and the terminal device 120. Configuration to meet different business needs of the receiving end.

Optionally, the data distribution manner is a time domain scatter mode or a time domain concentrating mode, where the time domain scatter mode is used to indicate that data of the same code block is distributed over multiple time domain symbols, where The domain concentration mode is used to indicate that data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

Alternatively, the centralized mode is used to represent the time domain in all the code blocks, the initial position of the index satisfying ^<the first and second data, can meet the time-domain symbol index "ι ^≤" ^2. Wherein, the initial position index is the position number of the data in the code block, and represents the position of the data in a code block.

The time domain dispersion manner is used to indicate that a first code block exists, and in the first code block, an initial location index is satisfied.

^3⁄4 < of the third data and the fourth data, the time domain symbol index satisfies >

Optionally, the time domain concentration mode is used to indicate that, in the first time domain symbol, there are no at least two first code blocks, and the first code block is distributed in the first time domain symbol. The maximum value of the initial location index is not equal to the maximum value of the initial location index of the data of the first code block distributed in the resource unit, where the resource unit is a basic unit for resource allocation of the scheduling user, where the resource unit All time domain symbols are the first time domain symbols; or the time domain dispersion mode is used to indicate that in the first time domain symbols including data from the Q code blocks, there are Q code blocks belonging to the Q code blocks. At least two second code blocks, a maximum value of an initial position index of data distributed in the first time domain symbol of the second code block and data distributed in the resource unit of the second code block Initial position index The maximum values are not equal, and Q is an integer greater than one.

Optionally, the time domain dispersion manner includes:

Optionally, the determining unit 1510 is further configured to: determine, according to a service requirement or an application scenario of the terminal device 120, an attribute of a demodulation reference signal DMRS, where an attribute of the DMRS corresponds to the data distribution mode, the DMRS The attribute is the pattern of the DMRS, the port number of the DMRS, or the number of OFDM symbols occupied by the associated DMRS signal. The transmitting unit 1520 is further configured to: send the attribute of the DMRS to the terminal device 120.

If the application scenario is that the demodulation result needs to be fed back in the current resource unit, the attribute of the DMRS corresponds to the time domain centralized mode, and the resource unit is a basic unit for resource allocation of the scheduling user;

Optionally, in a case that the pattern of the DMRS is that the DMRS occupies a time domain symbol, the pattern of the DMRS corresponds to the time domain concentration mode;

Optionally, the determining unit is further configured to:

Determining a frame structure used for data transmission according to a service requirement or an application scenario of the terminal device 120, where the frame structure corresponds to the data distribution mode.

Optionally, if the application scenario of the terminal device 120 is a demodulation result that needs to be fed back in the current resource unit, the frame structure corresponds to the time domain centralized mode, and the resource unit is a basic unit for resource allocation of the scheduling user; If the application scenario of the terminal device 120 is that the demodulation result does not need to be fed back in the current resource unit, the frame structure corresponds to the time domain dispersion mode.

Optionally, the transmitting unit 1520 is further configured to: send the indication information to the terminal device 120, where the indication information is used to indicate the data distribution manner.

Optionally, 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.

Optionally, the device further includes: a processing unit, configured to process the data to be sent according to the data distribution manner; the transmitting unit 1520 is specifically configured to: send the processed device to the terminal device 120 Describe the data to be sent.

Optionally, the processing unit is specifically configured to: perform interleaving processing on the data to be sent according to the data distribution manner, where the interleaving process includes interleaving and/or aligning a bit stream of the data to be sent. The modulation symbols that describe the transmitted data are interleaved.

Optionally, the processing unit is specifically configured to: use the data distribution manner according to the data distribution manner The resource mapping rule corresponding to the method performs resource mapping on the to-be-sent data.

Optionally, the transmitting unit 1520 is further configured to: receive data sent by the terminal device 120 according to the data distribution manner.

It should be understood that the apparatus 1500 herein is embodied in the form of a functional unit. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (eg, a shared processor, a proprietary processor, or A group of processors, etc., and memory, merging logic, and/or other suitable components that support the functions described. In an alternative example, those skilled in the art will appreciate that device 1500 may be specifically a network device in the above-described embodiments. The device 1500 may be used to perform various processes and/or steps corresponding to the network device 110 in the foregoing method embodiments. To avoid repetition, details are not described herein again.

FIG. 16 shows an apparatus 1600 for performing data transmission according to an embodiment of the present application. The apparatus 1600 includes: a transmission unit 1610, configured to receive indication information sent by the network device 110, where the indication information is used to indicate the terminal. a data distribution manner of the data transmission performed by the device 120 and the network device 110, where the data distribution manner is used to indicate that the data of the same code block is distributed on at least one time domain symbol;

a determining unit 1620, configured to determine, according to the indication information, the data distribution manner;

The transmission unit 1610 is further configured to:

Data transmission is performed with the network device 110 according to the data distribution manner.

The device for performing data transmission in the embodiment of the present application can flexibly configure the data distribution manner for data transmission between the network device 110 and the terminal device 120, so as to meet different service requirements of the receiving end.

Optionally, the time domain concentration mode is used to indicate that the first data and the second data that are satisfied by the initial location index in all the code blocks, and the time domain symbol index meets ^≤ ² ;

Optionally, the time domain concentration mode is used to indicate that, in the first time domain symbol, there are no at least two first code blocks, and the first code block is distributed in the first time domain symbol. The maximum value of the initial location index is not equal to the maximum value of the initial location index of the data of the first code block distributed in the resource unit, where the resource unit is a basic unit for resource allocation of the scheduling user, where the resource unit All time domain symbols are the first time domain symbols; or the time domain dispersion mode is used to indicate that in the first time domain symbols including data from the Q code blocks, there are Q code blocks belonging to the Q code blocks. At least two second code blocks, a maximum value of an initial position index of data distributed in the first time domain symbol of the second code block and data distributed in the resource unit of the second code block The maximum values of the initial position indices are not equal, and Q is an integer greater than one.

Optionally, the time domain dispersion manner includes:

a first time domain decentralized manner, used to represent all time domain symbols of data from the same code block within a resource unit Distributed on the distribution unit, the resource unit is a basic unit for resource allocation of the scheduling user;

Optionally, the device further includes: a processing unit, configured to process the data to be sent according to the data distribution manner; the transmitting unit 1610 is specifically configured to: send the processed device to the network device 110 Describe the data to be sent.

Optionally, the processing unit is specifically configured to: perform resource mapping on the to-be-sent data by using a resource mapping rule corresponding to the data distribution manner according to the data distribution manner.

Optionally, the transmitting unit 1610 is further configured to: receive data sent by the network device 110 according to the data distribution manner.

It should be understood that the apparatus 1600 herein is embodied in the form of a functional unit. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (eg, a shared processor, a proprietary processor, or A set of processors, etc.) and memory, merge logic, and/or other suitable components that support the functions described. In an alternative example, those skilled in the art will appreciate that device 1600 may be specifically a terminal device in the above-described embodiments. The device 1600 may be used to perform various processes and/or steps corresponding to the terminal device 120 in the foregoing method embodiments. To avoid repetition, details are not described herein.

FIG. 17 shows an apparatus 1700 for performing data transmission according to an embodiment of the present application. The apparatus 1700 includes: a transmission unit 1710, configured to receive an attribute of a demodulation reference signal DMRS sent by the network device 110, and attributes of the DMRS. Corresponding to the data distribution manner, the attribute of the DMRS is a pattern of the DMRS, a port number of the DMRS, or a number of OFDM symbols occupied by a DMRS signal;

a determining unit 1720, configured to determine, according to an attribute with the DMRS, a data distribution manner for performing data transmission with the network device 110, where the data distribution manner is used to indicate that data of the same code block is on at least one time domain symbol. Distribution;

The transmission unit 1710 is further configured to:

The time domain concentration mode is used to indicate that in all code blocks, the initial location index satisfies the first data and the second data of ^{< X2} , and the time domain symbol index satisfies ^≤ "²; An initial position index of the first data, an initial position index of the second data, a time domain symbol index of the first data, and a time domain symbol index of the second data;

The time domain is used to indicate the presence of a first embodiment dispersion code blocks in the first code block, the initial position of the index satisfying ^¾ <third data and fourth data, a time-domain symbol index satisfies>^"4,

Optionally, the time domain concentration mode is used to indicate that, in the first time domain symbol, there are no at least two first code blocks, and the first code block is distributed in the first time domain symbol. The maximum value of the initial location index is not equal to the maximum value of the initial location index of the data of the first code block distributed in the resource unit, where the resource unit is a basic unit for resource allocation of the scheduling user, where the resource unit All time domain symbols are the first time domain symbols; or

Optionally, the time domain dispersion manner includes:

Optionally, if the application scenario is that the demodulation result needs to be fed back in the current resource unit, the attribute of the DMRS corresponds to the time domain centralized mode, and the resource unit is a basic unit for scheduling resource allocation by the scheduling user;

Optionally, the device further includes: a processing unit, configured to process the data to be sent according to the data distribution manner; the transmitting unit 1710 is specifically configured to: send the processed device to the network device 110 Describe the data to be sent.

Optionally, the processing unit is specifically configured to: the terminal device 120 performs interleaving processing on the data to be sent according to the data distribution manner, where the interleaving process includes interleaving a bit stream of the data to be sent. And/or interleaving the modulation symbols of the data to be transmitted.

Optionally, the processing unit is specifically configured to: the terminal device 120 performs resource mapping on the to-be-sent data by using a resource mapping rule corresponding to the data distribution manner according to the data distribution manner.

Optionally, the transmitting unit 1710 is further configured to: receive the network device 110 according to the data distribution manner. The data sent.

It should be understood that the apparatus 1700 herein is embodied in the form of a functional unit. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (eg, a shared processor, a proprietary processor, or A group of processors, etc.) and memory, merging logic, and/or other suitable components that support the functions described. In an alternative example, those skilled in the art will appreciate that device 1700 may be specifically a terminal device in the above-described embodiments. The device 1700 can be used to perform various processes and/or steps corresponding to the terminal device 120 in the foregoing method embodiments. To avoid repetition, details are not described herein.

FIG. 18 shows an apparatus 1800 for performing data transmission according to an embodiment of the present application. The apparatus 1800 includes: a determining unit 1810, configured to determine, according to a frame structure used for data transmission with the network device 110, The data distribution mode of the data transmission by the network device 110, where the data distribution manner is used to indicate the distribution of data of the same code block on at least one time domain symbol;

The transmitting unit 1820 is configured to perform data transmission with the network device 110 according to the data distribution manner. The device for performing data transmission in the embodiment of the present application can flexibly configure the data distribution manner for data transmission between the network device 110 and the terminal device 120, so as to meet different service requirements of the receiving end.

The time domain concentration mode is used to indicate that in all code blocks, the initial location index satisfies the first data and the second data of ^{< X2} , and the time domain symbol index satisfies ^≤ "²;

Optionally, the time domain dispersion manner includes:

a third time domain decentralization manner, used to represent N time domains of data from the same code block in the resource unit The symbol is distributed over the distribution, and N is an integer greater than one.

It should be understood that the apparatus 1800 herein is embodied in the form of a functional unit. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (eg, a shared processor, a proprietary processor, or A group of processors, etc.) and memory, merging logic, and/or other suitable components that support the functions described. In an alternative example, those skilled in the art will appreciate that device 1800 may be specifically a terminal device in the above-described embodiments. The device 1800 can be used to perform various processes and/or steps corresponding to the terminal device 120 in the foregoing method embodiments. To avoid repetition, details are not described herein.

FIG. 19 shows another apparatus 1900 for performing data transmission provided by an embodiment of the present application. The device 1900 includes a processor 1910, a transceiver 1920, and a memory 1930. The processor 1910, the transceiver 1920, and the memory 1930 communicate with each other through an internal connection path. The memory 1930 is configured to store instructions, and the processor 1910 is configured to execute instructions stored by the memory 1930 to control the transceiver 1920 to send signals and / or receive signals.

The processor 1910 is configured to determine, according to a service requirement or an application scenario of the terminal device 120, a data distribution manner for performing data transmission with the terminal device 120, where the data distribution manner is used to indicate that data of the same code block is a distribution on at least one time domain symbol; the transceiver 1920 is configured to perform data transmission with the terminal device 120 according to the data distribution manner.

It should be understood that the device 1900 may be specifically the network device 110 in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the network device 110 in the foregoing method embodiment. Alternatively, the memory 1930 can include read only memory and random access memory and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory can also store information of the device type. The processor 1910 can be configured to execute instructions stored in a memory, and when the processor 1910 executes instructions stored in the memory, the processor 1910 is configured to perform the various steps of the method embodiment corresponding to the network device 110 described above and / or process.

FIG. 20 shows another apparatus 2000 for performing data transmission provided by an embodiment of the present application. The device 2000 includes a processor 2010, a transceiver 2020, and a memory 2030. The processor 2010, the transceiver 2020, and the memory 2030 communicate with each other through an internal connection path. The memory 2030 is configured to store instructions, and the processor 2010 is configured to execute instructions stored by the memory 2030 to control the transceiver 2020 to send signals and / or receive signals.

The transceiver 2020 is configured to receive the indication information sent by the network device 110, where the indication information is used to indicate a data distribution manner of the data transmission by the terminal device 120 and the network device 110, where the data distribution manner is used. a distribution of the data of the same code block on the at least one time domain symbol; the processor 2010 is configured to determine the data distribution manner according to the indication information; the transceiver 2020 is further configured to: according to the data distribution manner And performing data transmission with the network device 110.

It should be understood that the device 2000 may be specifically the terminal device 120 in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the terminal device 120 in the foregoing method embodiments. Optionally, the memory 2030 can include read only memory and random access memory and provides instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory can also store information of the device type. The processor 2010 can be configured to execute instructions stored in a memory, and when the processor 2010 executes instructions stored in the memory, The processor 2010 is configured to perform various steps and/or processes of the method embodiments corresponding to the terminal device 120 described above. FIG. 21 shows another apparatus 2100 for performing data transmission provided by an embodiment of the present application. The device 2100 includes a processor 2110, a transceiver 2120, and a memory 2130. The processor 2110, the transceiver 2120, and the memory 2130 communicate with each other through an internal connection path. The memory 2130 is configured to store an instruction, and the processor 2110 is configured to execute an instruction stored by the memory 2130 to control the transceiver 2120 to send a signal and / or receive signals.

The transceiver 2120 is configured to receive an attribute of the demodulation reference signal DMRS sent by the network device 110, where the attribute of the DMRS corresponds to the data distribution mode, and the attribute of the DMRS is a pattern of the DMRS, and the DMRS a port number, or a number of OFDM symbols occupied by the DMRS signal; the processor 2110 is configured to determine, according to an attribute of the DMRS, a data distribution manner for performing data transmission with the network device 110, where the data distribution manner is used. The distribution of the data of the same code block on the at least one time domain symbol; the transceiver 2120 is further configured to: perform data transmission with the network device 110 according to the data distribution manner.

It should be understood that the device 2100 may be specifically the terminal device 120 in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the terminal device 120 in the foregoing method embodiment. Alternatively, the memory 2130 can include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory can also store information of the device type. The processor 2110 can be configured to execute instructions stored in a memory, and when the processor 2110 executes instructions stored in the memory, the processor 2110 is configured to perform the various steps of the method embodiment corresponding to the terminal device 120 described above and / or process.

FIG. 22 shows another apparatus 2200 for performing data transmission provided by an embodiment of the present application. The device 2200 includes a processor 2210, a transceiver 2220, and a memory 2230. The processor 2210, the transceiver 2220, and the memory 2230 communicate with each other through an internal connection path. The memory 2230 is configured to store instructions, and the processor 2210 is configured to execute instructions stored by the memory 2230 to control the transceiver 2220 to send signals and / or receive signals.

The transceiver 2220 is configured to receive an attribute of the demodulation reference signal DMRS sent by the network device 110, where the attribute of the DMRS corresponds to the data distribution mode, and the attribute of the DMRS is a pattern of the DMRS, and the DMRS a port number, or a number of OFDM symbols occupied by the DMRS signal; the processor 2210 is configured to determine, according to an attribute of the DMRS, a data distribution manner for performing data transmission with the network device 110, where the data distribution manner is used. The distribution of the data of the same code block on the at least one time domain symbol; the transceiver 2220 is further configured to: perform data transmission with the network device 110 according to the data distribution manner.

It should be understood that the device 2200 may be specifically the terminal device 120 in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the terminal device 120 in the foregoing method embodiment. Optionally, the memory 2230 can include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory can also store information of the device type. The processor 2210 can be configured to execute instructions stored in a memory, and when the processor 2210 executes instructions stored in the memory, the processor 2210 is configured to perform the various steps of the method embodiment corresponding to the terminal device 120 described above and / or process.

It should be understood that, in the embodiment of the present application, the processor of the foregoing apparatus may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and application specific integrated circuits. (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present application may be directly embodied as hardware processor implementation. The line is completed or completed by a combination of hardware and software units in the processor. The software unit can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in a memory, and the processor executes instructions in the memory, and the steps of the above method are completed in combination with the hardware. To avoid repetition, it will not be described in detail here.

It should be understood that the term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may represent: A exists separately, and A and B exist simultaneously There are three cases of B alone. In addition, the character "/" in this article generally means that the contextual object is an "or" relationship.

Those skilled in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the steps and composition of the various embodiments have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that, for the convenience of the description and the cleaning process, the specific working processes of the system, the device and the unit described above can be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or a communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application.

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

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application is essential or part of the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. The tens of instructions are used to cause a computer device (which may be a personal computer, server, or network device 110, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any equivalents can be easily conceived by those skilled in the art within the technical scope disclosed in the present application. Modifications or substitutions are intended to be included within the scope of the present application. Therefore, the scope of protection of this application shall be subject to the scope of protection of the claims.

Claims

Rights request

A method for data transmission, comprising:

The network device determines a data distribution manner for performing data transmission with the terminal device, where the data distribution manner is used to indicate a distribution of data of the same code block on at least one time domain symbol;

The network device sends the indication information to the terminal device, where the indication information is used to indicate the data distribution manner; and the network device performs data transmission with the terminal device according to the data distribution manner.

The method according to claim 1, wherein the data distribution mode is a time domain dispersion mode or a time domain concentration mode, wherein the time domain dispersion mode is used to indicate that data from the same code block is The plurality of time domain symbols are distributed, and the time domain concentration mode is used to indicate that data from the same code block is concentratedly distributed on at least one consecutive time domain symbol.

The method according to claim 2, wherein the time domain concentration mode is used to indicate that an initial position index x1 of the first data and an initial position index x2 of the second data in one code block satisfy the first The time domain symbol index of one data is nl and the time domain symbol index n2 of the second data satisfies ^≤ "²;

The method according to claim 2, wherein the time domain concentration mode is used to indicate that in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the scheduling resource of the first code block, and the scheduling resource is included in the frequency domain. If the thousands of subcarriers comprise a plurality of OFDM symbols in the time domain, the plurality of OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe, and all time domain symbols in the scheduling resource All being the first time domain symbol; or

The time domain dispersion manner is used to indicate that in a first time domain symbol including data from Q code blocks, there are at least two second code blocks belonging to the Q code blocks, and the second code block is in The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the scheduling resource of the second code block, and Q is an integer greater than 1. .

The method according to any one of claims 2 to 4, wherein the time domain dispersion manner comprises: a first time domain dispersion manner, configured to indicate that data from the same code block is within the scheduling resource All of the time domain symbols are distributed, and the scheduling resource includes a thousand subcarriers in the frequency domain, and includes multiple OFDM symbols in the time domain, where the multiple OFDM symbols are one subframe, one time slot, or one Subframe after slot aggregation;

a second time domain decentralized manner for indicating that data from the same code block is distributed over the time domain symbols of the same time slot in the scheduling resource;

The third time domain decentralization mode is configured to indicate that data from the same code block is distributed over N time domain symbols in the scheduling resource, and N is an integer greater than 1.

The method according to any one of claims 1 to 5, wherein the method further comprises: determining, by the network device, a demodulation reference signal DMRS according to a service requirement or an application scenario of the terminal device Attribute, the attribute of the DMRS corresponds to the data distribution manner, and the attribute of the DMRS is the DMRS The pattern, the port number or port group number of the DMRS, or the number of OFDM symbols occupied by the DMRS signal to which the DMRS signal belongs; the network device sends the attribute of the DMRS to the terminal device.

The method according to claim 6, wherein if the application scenario is that the demodulation result needs to be fed back in the current scheduling resource, the attribute of the DMRS corresponds to the time domain centralized mode, and the scheduling resource is in the frequency The domain includes a thousand subcarriers, and includes multiple OFDM symbols in the time domain, where the multiple OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe;

If the application scenario is that the demodulation result does not need to be fed back with the scheduling resource, the attribute of the DMRS corresponds to the time domain dispersion mode.

The method according to claim 6, wherein, in a case that the pattern of the DMRS is that the DMRS occupies a time domain symbol, the pattern of the DMRS corresponds to the time domain concentration mode;

The method according to any one of claims 1 to 5, wherein the method further comprises: determining, by the network device, the data transmission according to the service requirement or the application scenario of the terminal device Frame structure, the frame structure corresponding to the data distribution manner.

The method according to any one of claims 1 to 5, wherein the determining, by the network device, a data distribution manner for performing data transmission with the terminal device comprises:

The network device selects one of the data distribution modes from the two or more data distribution modes as the data distribution mode for data transmission with the terminal device.

The method according to claim 1, wherein 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.

The method according to claim 1, wherein the data distribution mode is a priority frequency domain mapping, a time domain mapping, and no interleaving, or a priority frequency domain mapping, a time domain mapping, and a frequency domain. Interlace.

13. A method for data transmission, comprising:

Receiving, by the terminal device, the indication information sent by the network device, where the indication information is used to indicate a data distribution manner of the data transmission between the terminal device and the network device, where the data distribution manner is used to indicate that the data of the same code block is at least one Distribution on time domain symbols;

Determining, by the terminal device, the data distribution manner according to the indication information;

The method according to claim 13, wherein the data distribution mode is a time domain dispersion mode or a time domain concentration mode, wherein the time domain dispersion mode is used to represent data of the same code block. The time domain symbols are distributed over the time domain, and the time domain concentration mode is used to indicate that the data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

The method according to claim 14, wherein the time domain concentration mode is used to indicate that the first data and the second data that are satisfied by the initial position index in all the code blocks, and the time domain symbol index are both satisfied ^≤ "²; wherein, the initial position index of the first data is an initial position index of the second data, and is a time domain symbol index of the first data, and is a time domain symbol index of the second data. ; The time domain dispersion manner is used to indicate that there is a first code block, in which the initial location index satisfies ^3⁄4 < third data and fourth data, and the time domain symbol index satisfies >,

The method according to claim 14, wherein the time domain concentration mode is used to indicate that in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the scheduling resource of the first code block, and the scheduling resource is included in the frequency domain. If the thousands of subcarriers comprise a plurality of OFDM symbols in the time domain, the plurality of OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe, and all time domain symbols in the scheduling resource All being the first time domain symbol; or

The method according to claim 13, wherein the data distribution mode is a priority frequency domain mapping, a time domain mapping, and no interleaving, or a priority frequency domain mapping, a time domain mapping, and a frequency domain. Interlace.

The method according to any one of claims 13 to 17, wherein the indication information is any one of the following information:

19. A method for data transmission, comprising:

The terminal device receives the attribute of the demodulation reference signal DMRS sent by the network device, where the attribute of the DMRS corresponds to the data distribution mode, and the attribute of the DMRS is a pattern of the DMRS, a port number or a port group number of the DMRS, Or the number of OFDM symbols occupied by the associated DMRS signal;

Determining, by the terminal device, a data distribution manner for performing data transmission with the network device according to an attribute of the DMRS, where the data distribution manner is used to indicate a distribution of data of the same code block on at least one time domain symbol; The terminal device performs data transmission with the network device according to the data distribution manner.

The method according to claim 19, wherein the data distribution mode is a time domain dispersion mode or a time domain concentration mode, wherein the time domain dispersion mode is used to represent data of the same code block. The time domain symbols are distributed over the time domain, and the time domain concentration mode is used to indicate that the data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

The method according to claim 20, wherein the time domain concentration mode is used to indicate that the first data and the second data that are satisfied by the initial location index in all the code blocks, the time domain symbol index is satisfied to be ^≤ "²; wherein, the initial position index of the first data is an initial position index of the second data, and is a time domain symbol index of the first data, and is a time domain symbol index of the second data. ;

The method according to claim 20, wherein the time domain concentration mode is used to indicate that in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the Data distributed within the first time domain symbol The maximum value of the initial location index is not equal to the maximum value of the initial location index of the data distributed by the first code block in the scheduling resource, where the scheduling resource includes a thousand subcarriers in the frequency domain, and includes the time domain. a plurality of OFDM symbols, where the plurality of OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe, and all time domain symbols in the scheduling resource are the first time domain symbols; or

The method according to any one of claims 20 to 22, wherein the time domain dispersion manner comprises:

a first time domain decentralized manner, configured to indicate that data from the same code block is distributed over all time domain symbols in the scheduling resource, where the scheduling resource includes if the subcarriers in the frequency domain, and includes more in the time domain. OFDM symbols, the multiple OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe;

The method according to any one of claims 19 to 23, wherein if the frame structure is a demodulation result, the current scheduling resource needs to be fed back, and the attribute of the DMRS corresponds to the time domain concentration mode, The scheduling resource includes a thousand subcarriers in the frequency domain, and includes multiple OFDM symbols in the time domain, where the multiple OFDM symbols are one subframe, one time slot, or one subframe after the time slot is aggregated;

If the frame structure is demodulated, the current scheduling resource does not need to be fed back, and the attribute of the DMRS corresponds to the time domain dispersion mode.

The method according to claim 19, wherein the data distribution mode is a priority frequency domain mapping, a time domain mapping, and no interleaving, or a priority frequency domain mapping, a time domain mapping, and a frequency domain. Interlace.

26. A method for data transmission, comprising:

The terminal device determines, according to a frame structure used for data transmission with the network device, a data distribution manner for performing data transmission with the network device, where the data distribution manner is used to indicate that data of the same code block is on at least one time domain symbol. Distribution of

The network device sends the indication information to the terminal device, where the indication information is used to indicate the data distribution manner; and the terminal device performs data transmission with the network device according to the data distribution manner.

The method according to claim 26, wherein the data distribution mode is a time domain dispersion mode or a time domain concentration mode, wherein the time domain dispersion mode is used to indicate that data of the same code block is more The time domain symbols are distributed over the time domain, and the time domain concentration mode is used to indicate that the data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

The method according to claim 27, wherein the time domain concentration mode is used to indicate that the first data and the second data that are satisfied by the initial location index in all the code blocks, and the time domain symbol index are both satisfied ^≤ "²; wherein, the initial position index of the first data is an initial position index of the second data, and is a time domain symbol index of the first data, and is a time domain symbol index of the second data. ;

The time domain dispersion manner is used to indicate that a first code block exists, and in the first code block, an initial location index is satisfied. ^3⁄4 < ^X4 of the third data and the fourth data, the time domain symbol index satisfies >,

The method according to claim 27, wherein the time domain concentration mode is used to indicate that in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the scheduling resource of the first code block, and the scheduling resource is included in the frequency domain. If the thousands of subcarriers comprise a plurality of OFDM symbols in the time domain, the plurality of OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe, all time domain symbols in the scheduling resource unit All being the first time domain symbol; or

The method according to any one of claims 27 to 29, wherein the time domain dispersion manner comprises:

The method according to claim 26, wherein the data distribution mode is a priority frequency domain mapping, a time domain mapping, and no interleaving, or a priority frequency domain mapping, a time domain mapping, and a frequency domain. Interlace

32. An apparatus for performing data transmission, comprising:

a determining unit, configured to determine a data distribution manner for performing data transmission with the terminal device, where the data distribution manner is used to indicate a distribution of data of the same code block on at least one time domain symbol;

And a transmitting unit, configured to send the indication information to the terminal device, where the indication information is used to indicate the data distribution manner, and perform data transmission with the terminal device according to the data distribution manner.

The device according to claim 32, wherein the data distribution mode is a time domain dispersion mode or a time domain concentration mode, wherein the time domain dispersion mode is used to indicate that data of the same code block is more The time domain symbols are distributed over the time domain, and the time domain concentration mode is used to indicate that the data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

The device according to claim 33, wherein the time domain concentration mode is used to indicate that the first data and the second data that are satisfied by the initial position index in all the code blocks, the time domain symbol index is satisfied to be ^≤ "²; wherein, the initial position index of the first data is an initial position index of the second data, and is a time domain symbol index of the first data, and is a time domain symbol index of the second data. ;

Wherein, the index of the initial position of the third data, ^¾ of the initial position of the fourth index data for The time domain symbol index of the third data, " ⁴ is a time domain symbol index of the fourth data.

The device according to claim 33, wherein the time domain concentration mode is used to indicate that in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the scheduling resource of the first code block, and the scheduling resource is included in the frequency domain. If the thousands of subcarriers comprise a plurality of OFDM symbols in the time domain, the plurality of OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe, and all time domain symbols in the scheduling resource All being the first time domain symbol; or

The apparatus according to any one of claims 33 to 35, wherein the time domain dispersion manner comprises:

a second time domain decentralized manner for indicating that data from the same code block is dispersed over the time domain symbols of the same time slot in the resource unit;

The third time domain dispersion manner is used to indicate that data from the same code block is distributed over N time domain symbols in the resource unit, and N is an integer greater than 1.

The device according to any one of claims 32 to 36, wherein the determining unit is further configured to: determine, according to a service requirement or an application scenario of the terminal device, a demodulation reference signal DMRS Attribute, said

The attribute of the DMRS corresponds to the data distribution mode, and the attribute of the DMRS is a pattern of the DMRS, a port number or a port group number of the DMRS, or a number of OFDM symbols occupied by the DMRS signal;

The transmission unit is further configured to:

And transmitting the attribute of the DMRS to the terminal device.

The device according to claim 37, wherein, if the application scenario is that the demodulation result needs to be fed back in the current scheduling resource, the attribute of the DMRS corresponds to the time domain centralized mode, and the scheduling resource is in frequency The domain includes a thousand subcarriers, and includes multiple OFDM symbols in the time domain, where the multiple OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe;

If the application scenario is that the demodulation result does not need to be fed back in the current scheduling resource, the attribute of the DMRS corresponds to the time domain dispersion mode.

The device according to claim 37, wherein, in a case that the pattern of the DMRS is that the DMRS occupies a time domain symbol, the pattern of the DMRS corresponds to the time domain concentration mode;

The device according to any one of claims 32 to 36, wherein the determining unit is further configured to: determine, according to a service requirement or an application scenario of the terminal device, a frame used for data transmission Structure, said The frame structure corresponds to the data distribution mode.

The device according to claim 40, wherein if the frame structure of the terminal device is a demodulation result, the current scheduling resource needs to be fed back, and the frame structure corresponds to the time domain centralized mode, the scheduling resource Included in the frequency domain, if there are thousands of subcarriers, and includes multiple OFDM symbols in the time domain, where the multiple OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe;

If the frame structure of the terminal device is demodulated, the current scheduling resource feedback is not required, and the frame structure corresponds to the time domain dispersion mode.

The apparatus according to any one of claims 32 to 36, wherein the indication information is any one of the following information:

The method according to claim 32, wherein the data distribution mode is a priority frequency domain mapping, a time domain mapping, and no interleaving, or a priority frequency domain mapping, a time domain mapping, and a frequency domain. Interlace.

44. A device for performing data transmission, comprising:

a transmission unit, configured to receive indication information sent by the network device, where the indication information is used to indicate a data distribution manner of the data transmission between the terminal device and the network device, where the data distribution manner is used to represent data of the same code block. Distribution on at least one time domain symbol;

a determining unit, configured to determine, according to the indication information, the manner in which the data is distributed;

The transmission unit is further configured to:

Data transmission is performed with the network device according to the data distribution manner.

The device according to claim 44, wherein the data distribution mode is a time domain dispersion mode or a time domain concentration mode, wherein the time domain dispersion mode is used to indicate that data of the same code block is more The time domain symbols are distributed over the time domain, and the time domain concentration mode is used to indicate that the data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

The apparatus according to claim 45, wherein the time domain concentration mode is used to indicate that the first data and the second data that are satisfied by the initial position index in all the code blocks, and the time domain symbol index satisfy ^≤ "²; wherein, the initial position index of the first data is an initial position index of the second data, and is a time domain symbol index of the first data, and is a time domain symbol index of the second data. ;

The device according to claim 45, wherein the time domain concentration mode is used to indicate that in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the scheduling resource of the first code block, and the scheduling resource is included in the frequency domain. If the thousands of subcarriers comprise a plurality of OFDM symbols in the time domain, the plurality of OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe, all time domain symbols in the resource unit All being the first time domain symbol; or

The time domain dispersion manner is used to indicate that in a first time domain symbol including data from Q code blocks, there are at least two second code blocks belonging to the Q code blocks, and the second code block is in a maximum value of an initial position index of data distributed within the first time domain symbol and an initial position index of data of the second code block distributed within the resource unit Large values are not equal, and Q is an integer greater than one.

The device according to any one of claims 45 to 47, wherein the data distribution mode is a priority frequency domain mapping, a time domain mapping, and no interleaving, or priority frequency domain mapping, and then Domain mapping and interleaving in the frequency domain.

The apparatus according to any one of claims 44 to 48, wherein the indication information is any one of the following information:

50. An apparatus for performing data transmission, comprising:

a transmission unit, configured to receive an attribute of a demodulation reference signal DMRS sent by the network device, where an attribute of the DMRS corresponds to the data distribution mode, where an attribute of the DMRS is a pattern of the DMRS, a port number or a port of the DMRS The number of OFDM symbols occupied by the group number or the DMRS signal to which it belongs;

a determining unit, configured to determine, according to an attribute of the DMRS, a data distribution manner for performing data transmission with the network device, where the data distribution manner is used to indicate distribution of data of the same code block on at least one time domain symbol ;

The transmission unit is further configured to:

The device according to claim 50, wherein the data distribution mode is a time domain dispersion mode or a time domain concentration mode, wherein the time domain dispersion mode is used to represent data of the same code block. The time domain symbols are distributed over the time domain, and the time domain concentration mode is used to indicate that the data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

The device according to claim 51, wherein the time domain concentration mode is used to indicate that the first data and the second data that are satisfied by the initial position index in all the code blocks, the time domain symbol index is satisfied to be ^≤ "²; wherein, the initial position index of the first data is an initial position index of the second data, and is a time domain symbol index of the first data, and is a time domain symbol index of the second data. ;

The time domain dispersion manner is used to indicate that there is a first code block, in which the initial location index satisfies the third data and the fourth data, and the time domain symbol index satisfies >

The device according to claim 51, wherein the time domain concentration mode is used to indicate that in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the scheduling resource of the first code block, and the scheduling resource is included in the frequency domain. If the thousands of subcarriers comprise a plurality of OFDM symbols in the time domain, the plurality of OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe, and all time domain symbols in the scheduling resource All being the first time domain symbol; or

The device according to any one of claims 51 to 53, wherein the time domain dispersion manner comprises: a first time domain decentralized manner, configured to indicate that data from the same code block is distributed over all time domain symbols in the scheduling resource, where the scheduling resource includes if the subcarriers in the frequency domain, and includes more in the time domain. OFDM symbols, the multiple OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe;

The device according to any one of claims 52 to 54, wherein, if the frame structure is demodulated, the current scheduling unit needs to feed back, and the attribute of the DMRS corresponds to the time domain concentration mode, The scheduling resource includes a thousand subcarriers in the frequency domain, and includes multiple OFDM symbols in the time domain, where the multiple OFDM symbols are one subframe, one time slot, or one subframe after the time slot is aggregated;

The apparatus according to any one of claims 52 to 54, wherein, in a case where the pattern of the DMRS is that the DMRS occupies a time domain symbol, the pattern of the DMRS corresponds to the time domain concentration mode If the pattern of the DMRS is that the DMRS occupies at least two time domain symbols, if there is no data transmission between any two time domain symbols occupied by the DMRS, the pattern of the DMRS corresponds to the time domain. In a centralized manner, if there is data transmission between at least two time domain symbols occupied by the DMRS, the attributes of the DMRS correspond to the time domain dispersion manner.

57. An apparatus for performing data transmission, comprising:

a determining unit, configured to determine, according to a frame structure used for data transmission with the network device, a data distribution manner for performing data transmission with the network device, where the data distribution manner is used to indicate that data of the same code block is at least one time Distribution on the domain symbol;

And a transmission unit, configured to perform data transmission with the network device according to the data distribution manner.

The device according to claim 57, wherein the data distribution mode is a time domain dispersion mode or a time domain concentration mode, wherein the time domain dispersion mode is used to indicate that data of the same code block is more The time domain symbols are distributed over the time domain, and the time domain concentration mode is used to indicate that the data of the same code block is concentratedly distributed on at least one consecutive time domain symbol.

The device according to claim 58, wherein the time domain concentration mode is used to indicate that the first data and the second data that are satisfied by the initial position index in all the code blocks, the time domain symbol index is satisfied to be ^≤ "²; wherein, the initial position index of the first data is an initial position index of the second data, and is a time domain symbol index of the first data, and is a time domain symbol index of the second data. ;

The device according to claim 58, wherein the time domain concentration mode is used to indicate that in the first time domain symbol, there are no at least two first code blocks, and the first code block is in the The maximum value of the initial position index of the data distributed in the first time domain symbol is not equal to the maximum value of the initial position index of the data distributed in the scheduling resource of the first code block, and the scheduling resource is included in the frequency domain. If the subcarriers contain multiple OFDM symbols in the time domain, The plurality of OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe, and all time domain symbols in the scheduling resource are the first time domain symbols; or

The apparatus according to any one of claims 58 to 60, wherein the time domain dispersion manner comprises:

The device according to any one of claims 57 to 61, wherein if the frame structure of the terminal device is a demodulation result, the current scheduling resource needs to be fed back, and the frame structure corresponds to the time domain concentration. The scheduling resource includes a thousand subcarriers in a frequency domain, and includes multiple OFDM symbols in a time domain, where the multiple OFDM symbols are one subframe, one time slot, or one time slot aggregated subframe ;