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Method and device for sending feedback information

A technology for feeding back information and sending nodes, applied in the field of communication

Inactive Publication Date: 2018-01-30
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to propose a method and device for sending feedback information, aiming to solve the problem of how to send feedback information during single-point to multi-point transmission

Method used

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  • Method and device for sending feedback information

Examples

Experimental program
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Embodiment 1

[0079] reference figure 1 , figure 1 It is a schematic flowchart of a method for sending feedback information provided by an embodiment of the present invention.

[0080] Such as figure 1 As shown, the method for sending feedback information includes:

[0081] Step 101: The receiving node receives data sent by the sending node, and obtains feedback parameters according to the data;

[0082] Step 102: The receiving node determines whether to send feedback information to the sending node according to the feedback parameters; wherein, the feedback parameters include block error rate, error packet information, location information of the receiving node, and data One or more of the business priorities.

[0083] Specifically, in the first case, if there is only one feedback parameter, the receiving node may determine whether to send feedback information to the sending node according to the block error rate; or, the receiving node may determine according to the error packet information Whet...

Embodiment 2

[0091] reference figure 2 , figure 2 It is a schematic flowchart of another method for sending feedback information provided by an embodiment of the present invention.

[0092] Such as figure 2 As shown, the method for sending feedback information includes:

[0093] Step 201: The receiving node receives the data sent by the sending node, and counts the block error rate of the current statistical window, where the size of the current statistical window is the size of N consecutive data packets sent by the sending node, and the target error block The rate is 1 / N;

[0094] Step 202: The receiving node counts the block error rate of the data, and determines whether it exceeds the target block error rate required by the service, and the target block error rate is the block error rate required by users in the group receiving the data at the same time; if The receiving node determines that the block error rate exceeds the target block error rate required by the service, and sends feedba...

Embodiment 3

[0097] reference image 3 , image 3 It is a schematic flowchart of another method for sending feedback information provided by an embodiment of the present invention.

[0098] Such as image 3 As shown, the method for sending feedback information includes:

[0099] Step 301: The receiving node receives data sent by the sending node, and obtains feedback parameters according to the data;

[0100] Step 302: The receiving node determines whether to send feedback information to the sending node according to the error information in the current statistical window: if the number of consecutively incorrectly received data packets in the current statistical window exceeds a preset number threshold , The receiving node sends feedback information to the sending node within the current statistical window, and no longer feedbacks when the current statistical window ends.

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Abstract

The present invention discloses a method and device for sending feedback information. The method comprises: a receiving node receives data sent by a sending node, and obtains feedback parameters according to the data; and the receiving node determines whether feedback information is sent to the sending node or not according to the feedback parameters, wherein the feedback parameters include an error block rate, error packet information, location information of the receiving node and one or more than one of service priority of the data. Therefore, the feedback problem of point-to-multipoint transmission is solved, and air interface efficiency of point-to-multipoint transmission is greatly improved.

Description

Technical field [0001] The embodiments of the present invention relate to the technical field of communication, and in particular, to a method and device for sending feedback information. Background technique [0002] Mobile services are divided into point-to-point services such as unicast services and point-to-multipoint services such as broadcast and multicast services and group call services. 3GPP solves point-to-multipoint services through a unicast (Unicast) mechanism and a broadcast (Broadcast) mechanism. The broadcast mechanism is divided into enhanced Multimedia Broadcast Multicast Service (eMBMS) and Single Cell Point to Multipoint (SC-PTM). For eMBMS and SC-PTM, there is currently no physical layer feedback mechanism. Therefore, the transmission efficiency of the system will be very low for error-sensitive data services. Summary of the invention [0003] The purpose of the embodiments of the present invention is to provide a method and device for sending feedback infor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16
Inventor 李楚浩谭源春
Owner BEIJING XINWEI TELECOM TECH
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