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A method for triggering automatic retransmission request status report

An automatic retransmission request and status report technology, which is applied in transmission systems, electrical components, and error prevention/detection using return channels, can solve data window congestion, waste of wireless resources at data rates, and untimely ARQ status reports. , to achieve high reliability and improve utilization

Inactive Publication Date: 2011-12-28
ZTE CORP
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  • Claims
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AI Technical Summary

Problems solved by technology

If a fixed-length periodic status report is used, when the data rate is high, the ARQ status report may not be timely and cause data window congestion, and when the data rate is low, wireless resources may be wasted due to more frequent periodic ARQ status reports

Method used

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  • A method for triggering automatic retransmission request status report
  • A method for triggering automatic retransmission request status report

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Experimental program
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Embodiment Construction

[0021] A triggering method of an automatic repeat request status report of the present invention is based on a periodic status report mechanism, adopts a variable period status report mechanism, and the period between ARQ status reports is a non-fixed value and is determined by a predefined rule.

[0022] The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:

[0023] Such as figure 2 Shown is the flowchart of the method of the present invention, and the method comprises the steps:

[0024] Step 201: the high-level protocol layer configures the variable-period timing rule of its periodic status report timer T for the receiving end AM RLC entity, and sets the initial timing time of the periodic status report timer T;

[0025] The variable cycle timing rule of the periodic status report timer T is based on the data reception rate of the receiving end AM RLC entity receiving the RLC PDU. When the data receiving ra...

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Abstract

The invention discloses a method for triggering an automatic repeat request status report, which is applied to a communication system adopting an automatic repeat request mechanism, comprising the following steps: a high-level protocol layer configures a periodic state for a radio link control layer entity in confirmation mode at a receiving end Report the variable cycle timing rules of the timer, and set its initial timing time; receive the radio link control layer protocol data unit, and when it reaches the timing time of the periodic status report timer, trigger the automatic retransmission request status report; according to the periodic status report The variable-period timing rule of the timer calculates the timing time, restarts the periodic status report timer, and continues to receive the radio link control layer protocol data unit. By adopting the variable-period ARQ status report, not only high data transmission reliability is guaranteed, but also the triggering period of the ARQ status report can be adaptively adjusted according to the actual data receiving rate.

Description

technical field [0001] The present invention relates to the technical field of digital mobile communication, in particular to a method for triggering an Auto Repeat Request (ARQ for short) status report in a wireless communication system. Background technique [0002] The radio link control (Radio Link Control, RLC for short) layer message of the third generation mobile communication system uses three data transmission modes, namely transparent mode, unacknowledged mode and acknowledged mode (Acknowledged Mode, short for AM), which are different types The business provides different transmission channels. Among them, the AM transmission method provides reliable data transmission with a set of more complex mechanisms, and enables higher layers to obtain higher-level quality of service control through different configurations of AM entity parameters; RLC entities in unacknowledged mode and transparent mode An RLC entity can act as both a sending RLC entity and a receiving RLC...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L29/06
Inventor 张健阮象华
Owner ZTE CORP
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