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Method for selecting and assigning encoding and decoding

A codec and cell technology, which is applied in the field of codec selection and assignment, can solve the problem of not being able to know wireless resources, etc., and achieve a simple effect

Inactive Publication Date: 2008-12-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mobile switching center cannot know the radio resource situation. To complete the optimal codec, the MSC must obtain the usage of the radio resource through message interaction, and then determine the codec used for the call.

Method used

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  • Method for selecting and assigning encoding and decoding
  • Method for selecting and assigning encoding and decoding
  • Method for selecting and assigning encoding and decoding

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Embodiment Construction

[0015] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] figure 1 is a schematic diagram of a system implementing a codec selection and assignment method according to an embodiment of the present invention. Such as figure 1 As shown, the system includes: a mobile terminal 102, a mobile switching center 104, a base station controller 106, and an A interface between the mobile switching center and the base station controller. Wherein, the mobile switching center and the base station controller exchange preferred codec information of the base station controller through A interface resource request and resource indication messages. Wherein, the mobile switching center obtains the congestion situation of each cell of the base station controller through an overload (Overload) message, and determines the codec according to the congestion situation of each cell.

[0017] Among them, t...

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Abstract

The invention provided a selection and assignment method of code and decode, comprising the following steps: S202, a base station controller transmits an overload message carrying a congestion cell identification to a mobile exchange centre on time when detecting that the wireless resource is congested; and S204, the mobile exchange centre records congestion situation of the cell according to the overload message, selects appropriate code and decode from a code-decode list supporting both by the base station controller and a mobile table according to congestion situation of recoded cell when it needs to assign code and decode, and notifies the base station controller. The invention ensures to select preferable code and decode determined according to wireless resource state during a calling process by the use condition of existing control surface messages exchanging the wireless resource. It is simply implemented as well as no influence is brought to existing flow.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a codec selection and assignment method. Background technique [0002] In the Global System for Mobile Communications (GSM for short), the Base Station Controller (BSC for short) and the Mobile Switching Center (MSC for short) must select an appropriate voice code before the call is connected. decoding. When the A interface between the MSC and the base station controller is based on Time Division Multiplexing (TDM for short), the code pattern / rate adapter unit (Transcoder / Rate Adapter Unit, code pattern / rate adapter unit for short) is deployed in the base station controller In the device, when a mobile station (MobileStation, referred to as MS) initiates a service request, the mobile switching center sends the codec list supported by the mobile station and the base station controller to the base station controller through a channel assignment message, and the base station con...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04Q7/30
Inventor 凌军庞秀峰温占波
Owner ZTE CORP