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Feedback method and device for ARQ connection

A feedback information, unreceived technology, applied in the field of ARQ connection feedback method and device, can solve the problems of congestion, large bandwidth overhead of feedback messages, too many feedback messages, etc.

Active Publication Date: 2011-03-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When determining the timing of feedback, it is required to feedback the received message in time, but if there are too many feedback messages in this way, the feedback message will occupy a large bandwidth overhead, and it will also increase the processing time of the intermediate network element or the sending end network element for the feedback message. pressure
At the same time, it is required to feed back a large number of received packets together, but this may affect the timely update of the sending window and cause unnecessary congestion

Method used

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  • Feedback method and device for ARQ connection
  • Feedback method and device for ARQ connection
  • Feedback method and device for ARQ connection

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Embodiment Construction

[0029] In the embodiment of the present invention, determine the sequence number BSN of the first unreceived information block; judge whether the block sequence number BSN of the first unreceived information block is equal to the maximum block sequence number HighestBSN, when the judgment result is yes, Generate type 1 automatic repeat request feedback information element ARQ Feedback IE; form the ARQ Feedback IE into a feedback payload and send it. The information blocks before the first unreceived information block have been received, and their BSNs are continuous, so the feedback is carried out in an accumulative manner, so that the correct selection of the ARQ feedback type is completed after the ARQ feedback timing is determined, so that It is guaranteed to use as few ARQ Feedback IEs as possible to feed back as many information blocks as possible, so that problems that may occur during ARQ feedback can be balanced to a certain extent.

[0030] The characteristics of each...

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Abstract

The invention discloses a feedback method for ARQ (automatic repeat request) connection, which is used for realizing accurate selection of an ARQ feedback type to ensure that more information blocks are fed back by using fewer ARQ Feedback IE (information elements). The method comprises the following steps of: determining the BSN (block serial number) of the first un-received information block in a receiving window; judging whether the BSN of the first un-received information block is equal to the highest BSN, if so, generating a type-1 ARQ feedback IE; and sending the feedback payload consisting of the ARQ feedback IE. The invention also discloses a device for implementing the method.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an ARQ connection feedback method and device. Background technique [0002] In order to reduce the error rate of information arriving at the network link layer, save air interface bandwidth resources, and improve system service throughput, the IEEE802.16 standard introduces ARQ (Automatic Repeat request) technology at the MAC layer. ARQ (Automatic Repeat-reQuest, automatic retransmission request) is a technology that realizes reliable transmission of signals between communication nodes. The receiver requests the sender to retransmit the erroneous data message to re-receive the erroneous message, and the sender Adopting the automatic retransmission mechanism before receiving the acknowledgment information from the receiver is one of the methods used to deal with the errors caused by the channel in communication. [0003] Each basic unit information block (block) of ARQ trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/18
Inventor 田旌熙
Owner ZTE CORP