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A method and device for transmitting data in device-to-device communication

A device-to-device and data transmission technology, applied in the field of communication, can solve the problems of large control signaling overhead, reduce spectrum efficiency and reliability, etc., achieve the effects of reducing signaling overhead, improving spectrum utilization, and improving channel estimation quality

Active Publication Date: 2018-06-19
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution results in large control signaling overhead, which may lead to reduced spectral efficiency and reliability

Method used

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  • A method and device for transmitting data in device-to-device communication
  • A method and device for transmitting data in device-to-device communication
  • A method and device for transmitting data in device-to-device communication

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Experimental program
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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] figure 2 Shows a sending device 1 and a receiving device 2 for transmitting data in device-to-device communication according to one aspect of the present invention, wherein the sending device 1 includes a data sending device 11, and the receiving device 2 includes a data receiving device 21 and a determining device 22 , the redundancy version determining means 23 and the decoding means 24. Specifically, the data sending device 11 of the sending device 1 continuously sends a plurality of transmission data to the corresponding receiving device 2, wherein the transmission data includes data identification information for identifying whether the transmission data is new transmission data; correspondingly, The data receiving means 21 of the receiving device 2 receives a plurality of transmission data continuously sent by the corresponding sending device 1...

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Abstract

The invention aims at providing a method used for transmitting data in equipment-to-equipment communication and equipment thereof. Receiving equipment receives transmission data sent by corresponding sending equipment. The transmission data comprises data identification information identifying whether the transmission data is new transmission data. According to the data identification information, the new transmission data and retransmission data are determined. Redundancy version information of the retransmission data is determined. According to the redundancy version information, combined decoding is performed on the new transmission data and the retransmission data so as to acquire the decoded new transmission data. Compared to the prior art, by using the method and the equipment of the invention, through adding the data identification information identifying whether the transmission data is the new data in the transmission data, a receiving equipment terminal is easy to determine whether the received data is the new data; and according to a scheduling control signaling comprising timing correlation information, the redundancy version information of the retransmission data is determined. Through an indirect method, the redundancy version information is acquired so that signaling cost is reduced and a frequency spectrum utilization rate is increased.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a technology for transmitting data in device-to-device communication. Background technique [0002] D2D (device-to-device, Device-to-Device) communication, which is a feature of 3GPP (The 3rd Generation Partnership Project, The3rd Generation Partnership Project) R12 version, is being adopted by 3GPP SA (system and business aspects, Service and System Aspects) and RAN ( The Radio Access Network) group studies support for public safety and commercial use cases. Among them, broadcast (1:M) communication has been approved as a key D2D communication method, which can be applied in the case of network coverage and no network coverage. [0003] For broadcast communication, HARQ (Hybrid Automatic Repeat Request, Hybrid Automatic Repeat Request) feedback at the D2D receiving end is often not needed. In order to improve transmission reliability, the transmitting end may bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/18H04W8/14
CPCH04L1/0026H04L1/1806H04W8/14
Inventor 韩锋刘铮孟艳
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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