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Method for mutually switching local exchange chain and non-local exchange chain

A local switching and switching chain technology, applied in the field of mobile communications, can solve problems such as voice quality degradation, voice interruption, and data packets that cannot follow the control plane, so as to improve user experience and avoid voice quality degradation.

Inactive Publication Date: 2014-11-19
SHANGHAI ZTE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Due to network delay and other reasons, when the single-receipt-single-send mode is adopted, during the state switching process from non-LS to LS, the user plane data packets of the local switching link cannot follow the control plane to reach the BTS; while in the state of LS to non-LS During the switching process, after the local switching link is removed, it is unlikely that the data packets of the non-local switching link can be received immediately, so the voice will be interrupted momentarily, resulting in the decline of the voice quality. To avoid this problem, you need to use Related Techniques for Avoiding Voice Quality Degradation

Method used

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  • Method for mutually switching local exchange chain and non-local exchange chain
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  • Method for mutually switching local exchange chain and non-local exchange chain

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Embodiment Construction

[0028] The present invention provides a method for switching between local switching links and non-local switching links. Send and receive data packets, but only process valid data packets received.

[0029] This embodiment provides a method for switching between a local switching link and a non-local switching link. When the BTS receives an LS link establishment command or a non-LS link establishment command, it adopts a dual-receipt and double-transmission mode, that is, in the state switching process Among them, the BTS not only sends and receives non-LS link data packets (downlink data packets sent by A port, that is, data packets sent by TC, referred to as downlink data packets), but also transmits and receives LS link data packets (uplink data packets sent by the other party’s BTS). packets, referred to as uplink data packets) for sending and receiving. Although BTS can receive data packets of LS links and non-LS links, BTS only selects valid data packets among them for...

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Abstract

A method for switching between a local switch (LS) link and a non-local switch (Non-LS) link is provided. The method comprises: in the process of state switching between the LS link and the Non-LS link, a base transceiver station transceives both Non-LS link data packets and LS link data packets, but only processes valid data packets received. By using the technical solution, seamless connection of voice is achieved in switching between the LS link and the Non-LS link, decline of voice quality is avoided, and user experience is improved.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for switching between a local switch (Local Switch, LS) link and a non-local switch link. Background technique [0002] In the current GSM (Global System for Mobile Communications, Global Mobile Communications) system, the terminal (MS) is connected to the base station (BTS) through the air interface, and the base station is connected to the base station controller (BSC) through the ABIS interface, and the BSC and the mobile switching center (MSC) interact through the A port. Transcoder / Rate Adapter Unit (TRAU) is usually located at the BSC side, and performs the conversion process of speech algorithm coding and decoding. In the uplink direction, the code converter (Transcoder, TC) converts the compressed data packets of the BTS into PCM (Pulse Code Modulation, pulse code modulation) voice through decoding and sends them to the MSC side, while the downlink direction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W88/08H04W88/12H04W92/12
CPCH04W76/00
Inventor 罗小冬彭江萍刘旭杰
Owner SHANGHAI ZTE SOFTWARE CO LTD