US 2006/0154679 A1 · Synchronization method and system for transmitting voice data in a mobile communication system

Abstract

A method and system for synchronizing transmission/reception timings delayed during transmission/reception of data frames for voice signals in a mobile communication system including a media gateway with a transcoder and a base station controller for exchanging digital voice signals with the media gateway. The media gateway or the base station controller performs synchronization control by detecting synchronization of forward data frames for the voice signals. As the base station controller requests synchronization, the media gateway adjusts transmission timing and acquires synchronization according to the adjusted transmission timing, thereby correctly transmitting/receiving data frames for the voice signals.

Claims28

Dependent claims

A method for synchronizing transmission/reception time for delay in transmission/reception of a data frame of a voice signal in a mobile communication system which includes a media gateway and a base station controller, the media gateway including a trans-coder for converting an analog voice signal and a coded digital voice signal into each other, the base station controller transmitting/receiving a digital voice signal to/from the media gateway, the method comprising the steps of:

transmitting information of a forward delay and data frames of a voice signal, which is received from the mobile station, from the base station controller to the media gateway;
transmitting information of a reverse delay from the media gateway to the base station controller when the media gateway receives data frames of voice signals from a called party;
and
receiving the information of the forward delay and the reverse delay and performing a control for the synchronization in the base station controller and the media gateway, respectively.

1 more element

A method for synchronizing transmission/reception time by a base station controller for delay in transmission/reception of a data frame of a voice signal in a mobile communication system which includes a media gateway and the base station controller, the media gateway including a trans-coder for converting an analog voice signal and a coded digital voice signal into each other, the base station controller transmitting/receiving a digital voice signal to/from the media gateway, the method comprising the steps of:

checking whether or not forward data frames of the voice signal received from the media gateway are synchronized;
appointing information of a forward delay when the forward voice data frames are not synchronized, and notifying the media gateway of the appointed forward delay information and a reverse data frame of a voice signal received from a mobile station;
requesting time synchronization to the media gateway when synchronization is not established for the forward voice data frames received in sequence;
receiving information of transmission timing adjusted by the media gateway according to the time synchronization request;
and
synchronizing the forward voice data frames using the transmission timing information and transmitting the forward voice data frames to the mobile station.

3 more elements

A method for synchronizing transmission/reception time by a media gateway for delay in transmission/reception of a data frame of a voice signal in a mobile communication system which includes the media gateway and a base station controller, the media gateway including a trans-coder for converting an analog voice signal and a coded digital voice signal into each other, the base station controller transmitting/receiving a digital voice signal to/from the media gateway, the method comprising the steps of:

checking whether or not reverse data frames of the voice signal received from the base station controller are synchronized;
appointing information of a reverse delay, when the reverse voice data frames are not synchronized, and notifying the base station controller of the appointed reverse delay information and a forward data frame of a voice signal;
receiving a synchronization request from the base station controller when synchronization is not established for the reverse voice data frames received in sequence;
adjusting transmission timing of the reverse voice data frame according to the synchronization request, and transmitting the adjusted information to the base station controller;
and
receiving the reverse voice data frame synchronized according to the adjusted transmission timing information from the base station controller.

3 more elements

A system for synchronizing transmission/reception time for delay in transmission/reception of a data frame of a voice signal in a mobile communication system which includes a media gateway and a base station controller, the media gateway including a trans-coder for converting an analog voice signal and a coded digital voice signal into each other, the base station controller transmitting/receiving a digital voice signal to/from the media gateway, The system comprising:

the base station controller for transmitting information of a forward delay and data frames of a voice signal, which is received from the mobile station, to the media gateway, receiving the information of the forward delay and the reverse delay, and performing a control for the synchronization;
and
the media gateway for transmitting information of a reverse delay to the base station controller when the media gateway receives data frames of voice signals from a called party, receiving the information of the forward delay and the reverse delay, and performing a control for the synchronization.

Dependencies are inferred from the claim text.

Synchronization method and system for transmitting voice data in a mobile communication system

Life of this patent

Synchronization method and system for transmitting voice data in a mobile communication system

Life of this patent

Abstract

Claims28