A method for triggering automatic retransfer request status report

A technology of automatic retransmission request and status report, applied in transmission systems, digital transmission systems, error prevention/detection using return channels, etc. problem, to achieve the effect of improving radio resource utilization and system performance, and reducing the number of timers

Inactive Publication Date: 2008-02-20
ZTE CORP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The disadvantage of this solution is that a timer needs to be set for each RLC PDU corresponding to the SN at the gap, and a status report will be fed back after the timer expires. Multiple messages occupy more wireless resources and are not efficient.
HARQ uses mu

Method used

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  • A method for triggering automatic retransfer request status report

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Example Embodiment

[0015] The main technical feature of the present invention is: for the receiving end AM RLC entity gap detection (gapdetection, or missing PDU detection Detection of missing PDU(s)) status report trigger mechanism, if a sequence number gap is detected or multiple sequences are detected simultaneously Number gap, only one timer T is set, which is used to trigger the sending of the status report.

[0016] The main steps of the present invention are:

[0017] Step 1: The receiving end AM RLC entity receives RLC PDU;

[0018] Step 2: If the receiving AM RLC entity detects one or more RLC PDU sequence numbers SN gaps at the same time, that is, detects RLC PDU loss, only one timer T is set;

[0019] Step 3: Before the timer T expires, if the receiving AM RLC entity receives all the RLC PDUs corresponding to the SN gaps of the sequence numbers, the timer T is stopped;

[0020] Step 4: Timer T expires. If the receiving AM RLC entity has not received the RLC PDUs corresponding to all SN ga...

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Abstract

The utility model provides a report and trigger method for automatic retransmission request status. If the confirming mode and wireless chain circuit controlled entity of the receiving end detects the protocol data unit of one or a plurality of wireless chain circuit controlled layer is missed at the same time, the timer T is arranged. When the timer T is overtimed, the status report is triggered by the confirming mode wireless link controlled entity if the confirming mode wireless link entity does not receive the missed protocol data unit of the radio link control layer. The utility model has the advantages of reducing the timer amount the receiving end ARQ trigger status report needs, the information amounts the feedback status report needs and the data size of the packet, and improving the utilization rate of the wireless resource and the system performance.

Description

technical field [0001] The invention relates to the technical field of digital mobile communication, in particular to a status report feedback method of AM RLC entity automatic repeat request (ARQ) in an acknowledgment mode radio link control in a wireless communication system. Background technique [0002] The confirmation mode radio link control AM RLC entity ARQ receiving end response status reporting mechanism of the third generation mobile communication system is: periodicity, radio link control layer protocol data unit (RLC PDU) loss detection, and receiving a turn detection message from the sending end Polling three trigger methods. Acknowledgment (ACK) or non-acknowledgement (NACK) in the status report. There are three types of packet formats: bitmap (BITMAP), list (LIST), and relative list (RLIST). There are two mechanisms to reduce the frequency of status reports: prohibiting round-robin detection and prohibiting periodic round-robin detection. [0003] Regardin...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/16H04L1/00H04L29/08
Inventor 张健
Owner ZTE CORP
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