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Method and apparatus for retransmission

A technology of retransmission and equipment, applied in the direction of adjusting transmission mode, using return channel for error prevention/detection, transmission system, etc., can solve problems such as retransmission, and achieve the effect of ensuring real-time performance, simple method and high resource utilization efficiency

Active Publication Date: 2017-07-11
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no retransmission scheme for scenarios of different types of subframes
[0005] To sum up, at present, there is no retransmission scheme for the coexistence of different types of subframes

Method used

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  • Method and apparatus for retransmission
  • Method and apparatus for retransmission
  • Method and apparatus for retransmission

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Embodiment Construction

[0073] In the method for retransmission in the embodiment of the present invention, after data is transmitted in the first type subframe in the radio frame, if retransmission is required, the retransmission subframe located after the first type subframe carrying the data is determined; Retransmit the data transmitted in the first type of subframe through the determined retransmission subframe. Wherein, the radio frame includes the first type subframe and the second type subframe, and the retransmission subframe is one of the following: part of the first type subframe, part of the second type subframe, and at least one type of subframe Subframe or at least one subframe of the second type. Since the embodiment of the present invention is for a scene where different types of subframes coexist, the retransmission subframe can be determined, so that retransmission is performed for a scene where different types of subframes coexist, and system performance is improved.

[0074] Such as...

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Abstract

The invention relates to the technical field of wireless communication, specifically relates to a method and apparatus for retransmission, and solves the problem that currently there is no scheme for retransmission according to the scene of coexistence of different types of subframes. The embodiment of the invention provides a method for retransmission. The method includes: after the first type of subframes in radio frames transmit data, if retransmission is needed, retransmission subframes located after the first type of subframes for bearing the data are determined; and the data transmitted in the first type of subframes is retransmitted through the determined retransmission subframes, wherein the radio frames comprise the first type of subframes and the second type of subframes, and the retransmission subframes comprise one of the following: a part of the first type of subframes, a part of the second type of subframes, at least one of the first type of subframes, and at least one of the second type of subframes. Therefore, according to the method, the retransmission subframes in the condition of coexistence of different kinds of subframes can be determined, and retransmission is performed by employing the retransmission subframes.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, in particular to a method and equipment for retransmission. Background technique [0002] LTE (Long Term Evolution, Long Term Evolution) system and LTE-Advanced (Long Term Evolution Enhanced) system can work based on two standards: one is FDD (Frequency Division Duplexing, frequency division duplex) standard, the other is TDD (Time Division Duplexing, time division duplex) system. The communication systems using these two formats are FDD and TDD systems. [0003] Regardless of the TDD or FDD system, the user's smallest scheduling unit occupies one subframe in the time domain. If the user needs to retransmit a subframe, it needs to pass the RTT (Retransmission Time) after sending the subframe before retransmission. [0004] With the enrichment of business types and the development of services such as the Internet of Things and the Internet of Vehicles, some delay-sensitive servic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/16H04W72/04H04W72/12
CPCH04L1/0006H04L1/1607H04W72/0446H04W72/1221
Inventor 韩璐
Owner CHINA MOBILE COMM GRP CO LTD