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Method for dynamically adjusting grouping downlink coding mode

A coding method and dynamic adjustment technology, which is applied in the field of GSM mobile communication, can solve problems such as difficult coding methods, and achieve the effects of improving universality, high speed, and reasonable and perfect adjustment methods

Active Publication Date: 2009-12-23
ZTE CORP
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Problems solved by technology

Therefore, it is also practically difficult to completely rely on these two quality measurement parameters to determine the encoding method.

Method used

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  • Method for dynamically adjusting grouping downlink coding mode
  • Method for dynamically adjusting grouping downlink coding mode

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Embodiment Construction

[0025] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and through specific embodiments.

[0026] Such as figure 1 The shown packet downlink coding mode dynamically adjusts the processing flow.

[0027] First of all, it is necessary to set relevant parameters, including: the upper limit of the number of downlink responses with quality reports, and the counting thresholds of continuous rise, fall, and constant coding methods; in addition, it is necessary to establish a comparison between quality reports and coding methods according to the protocol relation.

[0028] Second, when the number of reported quality reports reaches the set upper limit of downlink responses with quality reports, determine the measurement encoding method according to the currently reported quality reports, and measure the current block loss rate;

[0029] Third, compare the measured encoding with the current encoding ...

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Abstract

The invention discloses a method for dynamically adjusting a grouping downlink coding mode. The method introduces a block loss rate index to prevent inaccurate measurements on the basis of measuring the wireless environment quality, is used for eliminating a situation that an actual transmission situation becomes better or worse while a coding mode is not changed, and well combines the index with the prior list selection method. In addition, the method adopts different limitations to the ascending and the descending of the coding mode so as to obtain a smooth and stable effect, and combines a punishment mechanism to make the whole adjusting method more reasonable and complete at the same time. The adjusting method can make the system have better wireless adaptability and adopt more reasonable coding mode under the circumstance that a radio wave is frequently changed so as to improve the stability and the transmission performance of the system.

Description

technical field [0001] The invention relates to a method for dynamically adjusting a coding mode in an EGPRS (Enhanced General Packet Radio Service) system, and belongs to the technical field of GSM (Global System for Mobile communication) mobile communication. Background technique [0002] The EGPRS packet service has made many improvements on the basis of the original GPRS, which has greatly improved the transmission speed of the system. One of the important changes is the adoption of 9 encoding methods from MCS1 (coding method 1) to MCS9 (coding method 9). , each encoding method is related to the wireless environment. The higher the encoding method, the higher the transmission rate, and the higher the requirements for the wireless environment. Especially in MCS7, MCS8, MCS9 (encoding mode 7, 8, 9), one wireless block carries two RLC (radio link control) blocks, the transmission speed is fast and the wireless environment is high, once a wireless block is lost, it needs Th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W24/10
Inventor 王继宏
Owner ZTE CORP
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