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Triggering method for automatic retransmission request status report

A technology for automatic retransmission request and status reporting, applied in transmission systems, electrical components, error prevention/detection using return channels, etc., which can solve problems such as data window congestion, waste of wireless resources at data rates, and untimely ARQ status reporting. , to achieve the effect of improving utilization and high reliability

Inactive Publication Date: 2009-06-10
ZTE CORP
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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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  • Triggering method for automatic retransmission request status report
  • Triggering method for automatic retransmission request status report

Examples

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 retransmission request state report, which is applied to a communication system adopting an automatic retransmission request mechanism. The method comprises the following steps: configuring a variable period timing rule of a periodic state report timer for an entity of a wireless link control layer in an acknowledge mode on a receiving end and setting initial timing time of the periodic state report timer through a high-level protocol layer; receiving protocol data units of the wireless link control layer, and triggering the automatic retransmission request state report when the timing time of the periodic state report timer arrives; and calculating the timing time according to the variable period timing rule of the periodic state report timer, restarting the periodic state report timer, and continuously receiving the protocol data units of the wireless link control layer. The method not only guarantees higher data transmission reliability but also can adjust the triggering period of the ARQ state report in a self-adapting mode according to the actual data receiving speed by adoption of the variable period ARQ state report.

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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IPC IPC(8): H04L1/18H04L29/06
Inventor 张健阮象华
Owner ZTE CORP
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