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Data transmission method, resource indication information acquisition method, terminal and base station

A data transmission method and resource technology, which are applied in the fields of data transmission methods, terminals and base stations, and resource indication information acquisition, can solve the problem that multiple subframes or multiple code block resource numbers cannot be indicated at the same time, and reduce signaling overhead. , to ensure the effect of workability

Active Publication Date: 2018-06-26
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a data transmission method, a method for obtaining resource indication information, a terminal, and a base station, so as to solve the problem in the prior art that the resource numbers of multiple subframes or multiple code blocks cannot be simultaneously indicated in the physical downlink control channel

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  • Data transmission method, resource indication information acquisition method, terminal and base station
  • Data transmission method, resource indication information acquisition method, terminal and base station
  • Data transmission method, resource indication information acquisition method, terminal and base station

Examples

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no. 1 example

[0044] Such as figure 1 As shown, the embodiment of the present invention provides a data transmission method applied to a base station, including:

[0045] Step 101: Determine the scrambling mode corresponding to the resource number of the downlink scheduling resource according to the correspondence relationship between the preset resource number and the scrambling mode.

[0046] Here, the scrambling mode corresponding to the resource number of the downlink scheduling resource is determined by presetting the corresponding relationship between the resource number and the scrambling mode, so that the data block is subsequently scrambled by using the scrambling mode.

[0047] Specifically, the above step 101 may specifically include determining the scrambling sequence group corresponding to the resource number of the downlink scheduling resource according to the correspondence relationship between the preset resource number and the scrambling mode. The scrambling sequence group...

no. 2 example

[0054] Such as figure 2 As shown, the embodiment of the present invention provides a data transmission method applied to a base station, including:

[0055] Step 201: Determine the resource number of the downlink scheduling resource.

[0056] Here, by determining the resource number of the downlink scheduling resource, the scrambling mode corresponding to the resource number of the downlink scheduling resource is subsequently determined according to the resource number.

[0057] Specifically, in the embodiment of the present invention, the number of each code block CB in the downlink scheduling resource may be determined according to the number of subframes in the downlink scheduling resource and the number of transport blocks TB in each subframe.

[0058] Attached below Figure 3-5 The specific implementation manner of determining the resource number in the embodiment of the present invention will be described in detail.

[0059] Implementation method one

[0060] The ab...

no. 3 example

[0104] like Figure 10 As shown, the embodiment of the present invention provides a method for acquiring resource indication information, which is applied to a terminal, including:

[0105] Step 1001: Obtain the data block sent by the base station and the scrambled cyclic redundancy check CRC. The scrambled CRC is the resource number of the downlink scheduling resource determined by the base station according to the corresponding relationship between the preset resource number and the scrambling mode The corresponding scrambling mode is obtained by scrambling the CRC of the data block carried by the downlink scheduling resource according to the determined scrambling mode.

[0106] Here, the terminal obtains the above data block and the scrambled CRC, so as to subsequently descramble the scrambled CRC to obtain a corresponding scrambling pattern.

[0107] Step 1002: Perform descrambling processing on the scrambled CRC to obtain a scrambling pattern of the CRC of the data block...

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Abstract

The invention provides a data transmission method, a resource indication information acquisition method, a terminal and a base station, and solves the problem that in the prior art, the resource numbers of multiple subframes or multiple code blocks cannot be simultaneously indicated in a physical downlink control channel. The method comprises the following steps of determining scrambling modes corresponding to the resource numbers of the downlink scheduling resources according to a corresponding relation between preset resource numbers and the scrambling modes; and scrambling the cyclic redundancy check (CRC) of the data blocks borne by the downlink scheduling resources according to the determined scrambling modes; and sending the scrambled CRC and the data blocks to the terminal. According to the embodiment of the invention, a CRC scrambling method is adopted to implicitly indicate the mode of the resource numbers to be indicated under the downlink, and the purpose of simultaneously giving the resource numbers of the plurality of subframes or the plurality of code blocks in the physical downlink control channel is achieved. Meanwhile, signaling overhead can be reduced, and the operability of the protocol is guaranteed.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a data transmission method, a method for acquiring resource indication information, a terminal and a base station. Background technique [0002] In the stage design of 4G TD-LTE, the physical downlink control channel (Physical Downlink Control Channel, PDCCH) transmission is not completely reliable, and the user equipment (User Equipment, UE) may lose some downlink control information (Downlink Control Information, DCI ), resulting in a higher error rate of a Hybrid Automatic Repeat request (HARQ). In order to avoid such problems, the PDCCH introduces a downlink assignment index (Downlink Assignment Index, DAI) field, which is used to inform the UE how many subframes include downlink transmission within the HARQ feedback window. In HARQ bundling, it can also help the UE detect whether downlink DCI is lost, and avoid the situation that some downlink DCI is lost but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/00H04W72/12
CPCH04L1/0061H04L5/0053H04W72/121H04W72/1273H04L1/00H04L5/00H04W72/12
Inventor 沈晓冬丁昱
Owner VIVO MOBILE COMM CO LTD