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Method and device for retransmitting data

A data retransmission and data technology, applied in the field of data retransmission, can solve the problems of complexity, power consumption increase, physical resource consumption, etc., and achieve the effect of reducing power loss and improving experience rate

Active Publication Date: 2020-05-15
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the above technical problems, the embodiments of the present invention provide a method and device for data retransmission, which solves the problem of the consumption of physical resources caused by a large number of retransmissions at the sending end, and the complexity and power required to perform multiple decoding operations at the receiving end. The problem of increased consumption

Method used

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  • Method and device for retransmitting data
  • Method and device for retransmitting data
  • Method and device for retransmitting data

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0083] See figure 2 , The figure shows a data retransmission method, the specific steps are as follows:

[0084] Step 201: After the data transmission in the data scheduling transmission unit is completed, send an indication message; wherein the indication message is used to indicate that the scheduling resource in the base station or the user data scheduling transmission unit is occupied; and / or the indication The message is used to indicate whether the data corresponding to the occupied scheduling resource in the base station or user data scheduling transmission unit will be retransmitted.

[0085] In this embodiment, optionally, the data scheduling transmission unit is the time and frequency unit of one data scheduling transmission, which may be one or more TTIs, subframes, time slots, and mini time slots. -slot) and so on.

[0086] After the data transmission in the data scheduling transmission unit ends, it may be after one data scheduling transmission of all users ends, or af...

no. 2 example

[0128] See Image 6 , The figure shows a data retransmission device, and the device 600 includes:

[0129] The sending module 601 is configured to send an indication message after the data transmission in the data scheduling transmission unit ends;

[0130] Wherein, the indication message is used to indicate that the scheduling resource in the base station or the user data scheduling transmission unit is occupied; and / or

[0131] The indication message is used to indicate whether the data of the user whose scheduling resource is occupied in the base station or the user scheduling data transmission unit will be retransmitted.

[0132] In this embodiment, optionally, the data scheduling transmission unit is a time unit for one data scheduling transmission, which can be one or more TTIs, subframes, time slots, mini time slots, etc. The data transmission unit includes but not Limited to the following structure:

[0133] Contains at least one downlink transmission part and at least one upli...

no. 3 example

[0148] See Figure 7 , The figure shows a data retransmission method, the specific steps are as follows:

[0149] Step 701: Receive instruction information sent by a base station.

[0150] The indication message is used to indicate that the scheduling resource in the data scheduling transmission unit is occupied; and / or

[0151] The indication message is used to indicate whether data of users whose scheduling resources are occupied in the data scheduling transmission unit will be retransmitted.

[0152] In this embodiment, optionally, if the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit will be retransmitted, the hybrid automatic repeat request HARQ operation is not started; or

[0153] If the indication message indicates that the data of the user whose scheduling resource is occupied in the data scheduling transmission unit will not be retransmitted, the operation is performed according to the prese...

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Abstract

Provided in the embodiment of the present disclosure are a data retransmission method and an apparatus. The method comprises: sending an indication message after data transmission in a data scheduling and transmission unit ends; wherein the indication message is used to indicate scheduled resource occupation status in a base station or a user data scheduling transmission unit; and / or the indication message is used to indicate whether the user data of the scheduled resource in the base station or the user data scheduling transmission unit is retransmitted.

Description

Technical field [0001] The present invention relates to the field of communication technology, and in particular to a method and device for data retransmission. Background technique [0002] In the current frame structure of LTE (Long Term Evolution, Long Term Evolution), downlink scheduling allocation and uplink scheduling authorization are performed through the downlink control channel (carrying downlink control information, DCI: Downlink control information) located in the downlink control area, with the most control area Occupies 3 OFDM (Orthogonal Frequency Division Multiplexing) symbols (for 1.4MHz system bandwidth, 4). [0003] In the downlink scheduling allocation DCI, the control information contained includes PDSCH (physical downlink shared channel) resource indication, transmission format, HARQ (hybrid automatic repeat request) information, and control information related to spatial multiplexing (if spatial multiplexing is used) If so), the downlink scheduling allocatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/00H04L5/00
CPCH04L1/0027H04L1/1896H04L5/0053H04L1/00H04L1/18H04L5/00
Inventor 胡丽洁侯雪颖徐晓东
Owner CHINA MOBILE COMM LTD RES INST
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