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Device-to-device (D2D) communication feedback method and device

A device communication and feedback device technology, applied in wireless communication, error prevention/detection using the return channel, digital transmission system, etc., can solve the problems of low reliability of data transmission, service quality, and inability to notify the sender, etc., to improve reliability performance and quality of service

Inactive Publication Date: 2018-02-23
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the receiving end fails to accept the data, the receiving end cannot inform the sending end, resulting in low reliability of data transmission and low Quality of Service (QoS)

Method used

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  • Device-to-device (D2D) communication feedback method and device
  • Device-to-device (D2D) communication feedback method and device
  • Device-to-device (D2D) communication feedback method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] figure 1 It is a flow chart of the device-to-device D2D communication feedback method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where the sending end sends target data to the receiving end in the device-to-device D2D communication. The receiving end executes, specifically including the following steps:

[0025] Step S110, when the target data sent by the sending end of the device-to-device communication is received, the feedback information is determined according to the receiving situation of the target data.

[0026] The D2D receiving end and the D2D sending end can communicate through the PC5 interface. If the target data is successfully received, the feedback message is an acknowledgment character (Acknowledgment, ACK). If the target data fails to be received, the feedback information is a negative character (Negative ACKnowledgment, NACK).

[0027] Step S120, sending the feedback information to the sending ...

Embodiment 2

[0033] figure 2 It is a flow chart of the D2D communication feedback method provided by Embodiment 2 of the present invention. As a further description of Embodiment 1, the method further includes:

[0034] Step S130, acquiring identification information of the target data.

[0035] When the receiving end receives the target data, it can obtain the identification information of the target data. The identification information may be source address, destination address, resource pool identification (pool identity) and resource index (Time Resource pattern, TRP index) of the target data.

[0036] Specifically, the source address, destination address, resource pool identifier and resource index of the target data are acquired.

[0037] Among them, the source address of the target data is the layer 2 (layer 2) identification (identity, ID) of the sending end (Source), that is, the Source layer 2 ID; the destination address is the layer 2 (layer 2) identification (identity, ID) o...

Embodiment 3

[0052] Image 6 The flow chart of the device-to-device communication feedback method provided by Embodiment 3 of the present invention, as a further description of the above embodiment, step S120, sending the feedback information to the sending end of the device-to-device communication, can be performed in the following manner Implementation:

[0053] Step S121, determining feedback communication resources from idle communication resources.

[0054] The idle communication resource may be an unused communication channel resource, or a communication resource defined as idle from the used communication information may be determined as a wide range of communication resources.

[0055] Further, such as Figure 7 As shown, step S121 can be implemented in the following manner:

[0056] Step S201, taking at least one subframe with a value of 0 in the resource index bitmap corresponding to the physical control channel PSCCH as a target feedback communication resource.

[0057] The ...

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Abstract

The invention discloses a device-to-device (D2D) communication feedback method and device. The method comprises the steps of determining feedback information according to receiving condition of targetdata when the target data sent by a D2D communication source is received; and sending the feedback information to the D2D communication source. According to the embodiment of the invention, a D2D communication destination can determine the feedback information according to the receiving condition of the target data when the target data sent by the source is received and feeds back the feedback information to the source, thereby feeding back the receiving condition of the target data. In the prior art, the destination cannot feed back the receiving condition of the D2D communication target data to the source, so the data transmission reliability and the quality of service are low. The D2D communication destination can feed back the feedback information of the target data sent by the sourceto the source, so the source can adjust data sending content according to the feedback information, and the data transmission reliability and the quality of service in the D2D communication are improved.

Description

technical field [0001] Embodiments of the present invention relate to wireless mobile communication technologies, and in particular to a feedback method and device for device-to-device communication. Background technique [0002] With the development of wireless mobile communication technology, people put forward higher and higher requirements for high speed, low delay and low cost. The International Mobile Telecommunications-Advanced (IMT-A) system allows Device-to-Device (D2D) communication to improve spectrum utilization under the cellular network of the cell, and is referred to as D2D communication for convenience of description. . Device-to-Device (D2D) communication is a new type of technology that allows terminals to communicate directly by multiplexing cell resources under the control of the system. [0003] In current D2D communication, after the sending end sends data to the receiving end, the data is successfully sent to the receiving end by default. However, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04W72/14
CPCH04L1/1607H04L1/1657H04W72/23
Inventor 王淑坤
Owner BEIJING XINWEI TELECOM TECH
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