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Data receiving state feedback method, data retransmission method and device and terminal

A technology of data receiving status and data retransmission, which is applied in the direction of digital transmission system, transmission system, error prevention/detection using the return channel, etc., and can solve the problem of low utilization rate of transmission resources

Inactive Publication Date: 2015-04-01
YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on at least one of the above technical problems, the present invention proposes a new data receiving status feedback scheme and data retransmission scheme in terminal direct communication, which avoids sending the same copy multiple times by the sender terminal in the prior art. The problem of low utilization rate of sending resources caused by data, realizes the standard definition of data retransmission mechanism in terminal direct communication, which is conducive to improving the continuity of terminal direct communication, and can meet the user's high demand for D2D communication. Service Quality Requirements

Method used

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  • Data receiving state feedback method, data retransmission method and device and terminal
  • Data receiving state feedback method, data retransmission method and device and terminal
  • Data receiving state feedback method, data retransmission method and device and terminal

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Embodiment approach 1

[0100] In the above technical solution, preferably, the step of feeding back the reception of the data to the sending terminal specifically includes: determining the reception of the data by each resource unit in the first time-frequency resource ; Feed back the reception status of the data by a corresponding resource unit in the first time-frequency resource to the sending terminal through each resource unit in the second time-frequency resource.

[0101] In this embodiment, each resource unit in the second time-frequency resource only feeds back the data reception situation of one resource unit in the first time-frequency resource. Wherein, in a special case, each resource unit is a subframe, that is, each subframe in the second time-frequency resource feeds back the reception of data by a subframe in the first time-frequency resource.

Embodiment approach 2

[0103] In the above technical solution, preferably, the step of feeding back the reception of the data to the sending terminal specifically includes: determining the reception of the data by each resource unit in the first time-frequency resource ; Feedback the reception of the data by all resource units in the first time-frequency resource to the sending terminal through any resource unit in the second time-frequency resource.

[0104] In this embodiment, by using any resource unit in the second time-frequency resource to feed back the data reception status of all resource units in the first time-frequency resource to the sender terminal, it can save time and space occupied when feeding back the reception status. time-frequency resources. Wherein, in special cases, each resource unit is a subframe.

[0105] When using the method described in Embodiment 2 for feedback, the following two specific feedback methods can be used:

[0106] method one:

[0107] In the above techni...

Embodiment approach 3

[0114] In the above technical solution, preferably, further comprising: setting a terminal direct communication data transmission physical feedback channel, the terminal direct communication data transmission physical feedback channel is at a specified time-frequency position of the second time-frequency resource; by The terminal is directly connected to the communication data transmission physical feedback channel to feed back the receiving condition of the data to the sending terminal.

[0115] In this technical solution, a dedicated channel may be set to implement feedback on data reception in D2D communication.

[0116] In the above technical solution, preferably, the step of feeding back the receiving status of the data to the sender terminal specifically includes: when the sender terminal sends the data through at least one process, determining that the receiver The reception status of the data sent by the terminal to each process in the at least one process; the recepti...

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Abstract

The invention provides a data receiving state feedback method, a data retransmission method and device and a terminal in terminal direct connection communication. The data receiving state feedback method in terminal direct connection communication comprises the steps of receiving data sent by a sender terminal on a first time frequency resource for data receiving, and recording the data receiving situation; feeding the data receiving situation back to the sender terminal on a second time frequency resource for data sending so that the sender terminal can determine whether data need to be retransmitted or not according to the receiving situation. According to the technical scheme, the problem that in the prior art, due to the fact that a sender terminal sends the same data repeatedly, the sent resource utilization rate is low is avoided, the specification definition of a data retransmission mechanism in terminal direct connection communication is achieved, the terminal direct connection communication continuity is improved, and the requirement of a user for the D2D communication high-service quality can be met.

Description

technical field [0001] The present invention relates to the technical field of terminal direct connection communication, in particular, to a method for feedbacking data receiving state in terminal direct connection communication, a feedback device for data receiving state in terminal direct connection communication, and a method for feedbacking data receiving state in terminal direct connection communication. A data retransmission method, a data retransmission device in terminal direct communication, and a terminal. Background technique [0002] In the current 3GPP D2D (Device-to-Device, device-to-device, ie, terminal-to-device direct communication) topic, a basic definition of D2D technology is given. According to current application requirements, the current protocol focuses on D2D broadcast and multicast services, and does not focus on the two-way communication capability in D2D communication. Therefore, the retransmission mechanism of D2D is not defined, only the simple...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04L1/18
CPCH04L1/1642H04L1/1822
Inventor 张晨璐
Owner YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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