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Adaptive multi-rate encoding method and device in mobile communication system

An adaptive multi-rate, mobile communication system technology, applied in the direction of coding, transmission system, coding components, etc., can solve the problems that cannot be obtained, cannot reflect the user's distance from the base station, and the continuity of user business cannot be guaranteed, so as to ensure continuity , the effect of large coverage performance

Inactive Publication Date: 2006-09-27
HUAWEI TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

The existing method can only reflect the current load status, but cannot reflect the distance between the user and the base station, so the mode adjustment instructions required for user mobility cannot be obtained, and the continuity of user services cannot be guaranteed.

Method used

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  • Adaptive multi-rate encoding method and device in mobile communication system
  • Adaptive multi-rate encoding method and device in mobile communication system
  • Adaptive multi-rate encoding method and device in mobile communication system

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Embodiment Construction

[0060] The method provided by the present invention is a connection-oriented speech mode control algorithm, which can adaptively adjust the mode of the user's voice service according to the user's power situation, so that the mode of the user's voice service can be adaptively adjusted according to the distance between the user and the base station , it is also possible to perform mode transition according to the load state of the cell.

[0061] In order to make it easier for those skilled in the art to understand and realize the present invention, the embodiments of the present invention are described in conjunction with the accompanying drawings.

[0062] 1. Algorithm to adjust AMR mode according to transmit power

[0063] In the wireless communication system, due to the function of power control, the transmit power reflects the status of the system and service connections, such as cell load and path loss in the propagation environment, when ensuring voice quality. When the ...

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Abstract

This invention provides a self-adaptive multiple speed coding method and its device used in mobile communication system. This method contains following steps: Coding the voice and building communication link; measuring the signal property parameter of this communication link, judging if this signal property parameter is bigger than the predetermined first threshold, if bigger than it, then to lower the coding speed of voice tune, otherwise, to keep the original coding speed; judged if this signal property parameter is smaller than the predetermined second threshold; if smaller than it, then to increase the coding speed; otherwise to keep the original speed. This device contains: The variable speed voice coder, receiving and transmitting channel, measurement device, control device.

Description

technical field [0001] The invention relates to a mobile communication system, in particular to a method and device for adaptive multi-rate encoding in the mobile communication system. Background technique [0002] In order to facilitate those of ordinary skill in the art to understand the present invention, the terms used in this description are listed as follows: [0003] AMR adaptive multi-rate codec adaptive multi-rate encoding [0004] BLER block error ratio block error rate [0005] CDMA code division multiple access code division multiple access [0006] CPICH RSCP CPICH received signal code power pilot channel received power [0007] Node B Third Generation Cellular System Base Station [0008] FER frame error ratio frame error rate [0009] MOS Mean Opinion Score average subjective score [0010] In communication systems including CDMA, GSM, TDMA and PCS, voice uses AMR coding method (Adaptive Multi-Rate codec), which can provide 8 coding rates, namely: 12.2, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/20H04Q7/34H04B7/26H04B1/69H03M13/00H04W28/18
Inventor 王晓霞胡中骥
Owner HUAWEI TECH CO LTD
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