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Method and apparatus for data retransmission based on service quality as well as radio communication system

A data retransmission and quality of service technology, applied in the communication field, can solve problems such as data retransmission that is not suitable for various QoS, and achieve the effect of optimizing system performance

Inactive Publication Date: 2008-10-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the retransmission process has nothing to do with the QoS of the service, it is not suitable for data retransmission with various QoS requirements

Method used

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  • Method and apparatus for data retransmission based on service quality as well as radio communication system
  • Method and apparatus for data retransmission based on service quality as well as radio communication system
  • Method and apparatus for data retransmission based on service quality as well as radio communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 101: Setting the delay threshold and block error rate threshold of QoS;

[0030] 102: Comparing the QoS delay requirement for data with the set QoS delay threshold, comparing the QoS block error rate requirement for data with the set QoS block error rate threshold, and according to the comparison result Divide data into data that requires low latency and low block error rate;

[0031] 103: The number of retransmissions at the sender’s layer 1 exceeds the upper limit or the timer times out, indicating that the transmission at the sender’s layer 1 failed, and a retransmission message is sent to the sender’s layer 2 to trigger a retransmission at the sender’s layer 2, or the receiver’s layer 2 verification When the received data is wrong, send a retransmission message to the sending end layer 2, triggering the sending end layer 2 retransmission;

[0032] 104: The sender layer 2 updates the data status list in the data window, changes the data status of the data transmissi...

Embodiment 2

[0052] Set the QoS delay threshold and block error rate threshold; compare the QoS data delay requirements with the set QoS delay threshold, and compare the QoS data block error rate requirements with the set QoS block error rate threshold. Compare, according to the result of comparison, data is divided into: the data that low delay requires high block error rate requires, compared with embodiment one, the retransmission times and the longer timer of setting bigger sender layer one, increase The number of possible retransmissions of the sending end layer 1, the windows of the sending end layer 2 and the receiving end layer 2 are set to a larger value than the windows of the sending end layer 1 and the receiving end layer 1, and the signaling process is the same as that of the first embodiment .

Embodiment 3

[0054] 301: Setting the delay threshold and block error rate threshold of QoS;

[0055] 302: Comparing the QoS requirement for data delay with the set QoS delay threshold, comparing the QoS requirement for data block error rate with the set QoS block error rate threshold, and dividing the data according to the comparison result Data required for high latency and low block error rate;

[0056] 303: When the number of retransmissions from the sender layer 1 to the sender layer 2 exceeds the upper limit or the timer times out, the sender layer 1 still retransmits the data until the receiver layer 1 returns a confirmation message.

[0057] see image 3 , which is the signaling flow chart of the retransmission of the sending end layer 1 and the receiving end layer 1 in the third embodiment of the present invention:

[0058] 31) The sending end layer one sends data to the receiving end layer one;

[0059] 32) The receiving end layer one returns a retransmission message to the sen...

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Abstract

The invention provides a date retransmission method based on service quality, a method using the same and a wireless communication system which belongs to communication technique field. The method includes: setting threshold of service quality QoS parameter, comparing parameter requirement of QoS to date with set parameter threshold, processing date retransmission for various QoS parameter requirement date by using corresponding retransmission date according with compared result. The invention combines date retransmission with date QoS requirement, uses corresponding optimal retransmission flow for various QoS requirement date, thus, system performance is optimized in condition of no-increasing system complexity.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method for retransmitting data based on QoS (Quality of Service, quality of service), its device, and a wireless communication system. Background technique [0002] With the development of communication technologies, how to reduce operating costs, increase data transmission rates, and meet QoS requirements for service data has become a matter of concern. For example, UMTS (Universal Mobile Telecommunication System, Universal Mobile Communication System) is a third-generation mobile communication system that uses WCDMA (WideBand Code Division Multiple Access, Wideband Code Division Multiple Access) air interface. , Third Generation Partnership Project) the competitiveness of wireless access technology in the next few years or longer, 3GPP TSG (Technical Specification Group, Technical Specification Organization) RAN (Radio Access Network, Radio Access Network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16H04Q7/38
Inventor 包毅
Owner HUAWEI TECH CO LTD