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Local exchange method, control device and system

A technology of local switching and control devices, applied in the field of network communication

Active Publication Date: 2010-12-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the Adaptive Multi-Rate codec (Adaptive Multi-Ratecodec, AMR) voice version, since the MS and the Base Transceiver Station (Base Transceiver Station, BTS) do not use a single rate but a rate set to activate (MS and BTS Negotiate the rate type according to the voice quality of the uplink and downlink, and select an appropriate rate for communication), which will result in that although both MSs use the AMR voice version, because the rate sets used by the two are different, when performing local switching No voice after local switching

Method used

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  • Local exchange method, control device and system

Examples

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Embodiment 1

[0017] This embodiment provides a local switching method, especially a local switching method supporting AMR speech coding. The method will be described in detail below in conjunction with the accompanying drawings.

[0018] refer to figure 1 , figure 1 Shown is a local switching method according to an embodiment of the present invention, the method includes:

[0019] Step S101: Detect whether the voice versions of the adaptive multi-rate codecs used by the devices to be switched locally are the same, and whether the rate sets of the voice versions of the adaptive multi-rate codecs have an intersection;

[0020] The equipment for local switching includes mobile stations and base transceiver stations.

[0021] This step can be completed by the BSC equipment, that is, the base station controller (Base Station Controller, BSC), and the modification of the voice version can specifically use the method of switching or mode modification to modify the AMR voice versions of the two...

Embodiment 2

[0028] This embodiment provides a local switching method, especially a local switching method supporting AMR speech coding. The method will be described in detail below in conjunction with the accompanying drawings.

[0029] refer to figure 2 , shows a local switching method according to another embodiment of the present invention, the method includes:

[0030] Step S201 detects whether the AMR voice versions used by the MSs to be switched locally are the same, and whether the rate sets of the AMR voice versions have an intersection, if the AMR voice versions are the same and the rate sets of the AMR voice versions have an intersection, then perform the following step 203;

[0031] Step 202 If the AMR voice versions are not the same, modify the AMR voice versions of the two MSs to be the same, if the rate sets of the AMR voice versions do not overlap, then modify the rate sets of the AMR voice versions of the two MSs to at least part of the rate types Same; this step is per...

Embodiment 3

[0035] This embodiment provides a local switching method, especially a local switching method supporting AMR speech coding. The method will be described in detail below in conjunction with the accompanying drawings.

[0036] refer to image 3 , shows a local switching method according to another embodiment of the present invention, the method includes:

[0037] Step S301 detects whether the AMR voice versions used by the MSs that need to perform local switching are the same, if they are the same, perform the following steps, if not, then modify the AMR voice versions of the two MSs to be the same;

[0038] Step S302 detects whether there is an intersection in the rate sets of the AMR voice versions used by the MSs that need to perform local switching, if there is an intersection, perform the following step S303, if not, modify the rate sets of the AMR voice versions of the two MSs to at least some rate types Identical; above-mentioned steps are carried out by BSC, and specif...

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Abstract

The invention provides a local exchange method, a control device and a system. The method comprises the following steps: detecting whether the voice versions of an adaptive multi-rate coder and an adaptive multi-rate encoder which are used by equipment exchanging locally are the same and whether the speed sets of the voice versions of the adaptive multi-rate coder and the adaptive multi-rate encoder have an intersection; when the versions are different, modifying the versions of the adaptive multi-rate coder and the adaptive multi-rate encoder to be the same; when no intersection exists, modifying the speed sets of the voice versions of the adaptive multi-rate coder and the adaptive multi-rate encoder to have an intersection; and building a local exchange between equipment which has the same voice version as the adaptive multi-rate coder and the adaptive multi-rate encoder and has an intersection with the speed sets. The invention can realize local exchange by MS using an AMR voice version and simultaneously fully play the function of AMR to improve voice quality.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a local switching method, control device and system. Background technique [0002] With the development of Global System for Mobile Communications (GSM, Global System for Mobile Communications,) network, GSM network application coverage has shifted from coverage in dense urban areas to coverage in remote areas. These remote areas are characterized by scattered locations, but relatively concentrated personnel, and calls are generally concentrated between local users. In this kind of coverage, the use of local switching technology can greatly reduce the cost of network construction for operators. [0003] Since it is not necessary to perform rate adaptation through a transcoder and rate adaptation unit (TRAU) when performing local switching, this requires the two mobile stations (Mobile Station, MS) that perform local switching to use The rate type must be the same, that is, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/08H04W28/22H04L1/00G10L19/12G10L19/00
CPCG10L19/0019H04M7/0072H04W88/181H04W8/22G10L19/00
Inventor 胡小群姚建辉柳军刘绍峰
Owner HUAWEI TECH CO LTD
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