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Method and system for performing hand-over of multimode-multiband terminal by using multi target cell in mobile communication environment

A mobile communication system and mobile communication technology are applied in the field of handover and system for executing multi-mode multi-band terminals using multi-target cells in a mobile communication environment, and can solve problems such as handover failure

Inactive Publication Date: 2007-09-26
SK TELECOM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If only one target cell for handover is used, and if the wireless environment changes rapidly due to the movement of multi-mode multi-band terminals, handover may fail

Method used

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  • Method and system for performing hand-over of multimode-multiband terminal by using multi target cell in mobile communication environment
  • Method and system for performing hand-over of multimode-multiband terminal by using multi target cell in mobile communication environment
  • Method and system for performing hand-over of multimode-multiband terminal by using multi target cell in mobile communication environment

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Embodiment Construction

[0017] Reference will now be made in detail to the preferred embodiments of the invention.

[0018] FIG. 2 is a block diagram showing an internal structure of a multi-mode multi-band terminal according to a preferred embodiment of the present invention.

[0019] The multi-mode multi-band terminal includes an antenna 210 , an RF transceiver 220 , a CDMA modem module 230 , a WCDMA modem module 240 , a controller 250 and a program storage module 260 .

[0020] The antenna 210 receives RF signals transmitted from base stations in adjacent areas, and transmits the RF signals to the RF transceiver 220 . In addition, the antenna 210 receives the modulated RF signal from the RF transceiver 220 to transmit the modulated RF signal into the air.

[0021]The RF transceiver 220 demodulates the RF signal received from the antenna 210 and transmits the demodulated RF signal to the CDMA-2000 filter 232 of the CDMA modem module 230 or the WCDMA filter 242 of the WCDMA modem module 240 . The ...

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Abstract

Disclosed are a method and a system for performing handover of a multimode-multiband terminal by using multi- target cells in a mobile communication environment. The method for performing handover of a multimode-multiband terminal using multi-target cells in a mobile communication environment, which increases a probability of handover and improves communication quality by using the multi-target cells in a mobile communication system including a CDMA-2000 system, which includes a base station transmitter and a base station controller and provides a CDMA-2000 service to a terminal requesting connection, and a WCDMA system, which includes a radio transceiver subsystem (RTS) and a radio network controller (RNC) and provides a WCDMA service to the terminal requesting the terminal, comprises the steps of: (a) receiving a WCDMA signal transmitted from the WCDMA system through a WCDMA modem and measuring an energy of carrier / interference of others (Ec / Io) value; (b) turning on a CDMA-2000 modem according to the measured value and entering into an idle state; (c) creating multi-target cell information by monitoring a target cell for handover; (d) requesting handover to the WCDMA system; (e) receiving a handover command from the WCDMA system; and (f) turning off the WCDMA modem and switches a communication link to the CDMA-2000 system through the CDMA-2000 modem.

Description

technical field [0001] The present invention relates to a method and system for performing handover of a multi-mode multi-band terminal using a multi-target cell in a mobile communication environment, and more particularly, to a method and system for utilizing a multi-target cell in a mobile communication environment A method and system for performing handover of a multi-mode multi-band terminal that improves handover probability using multiple target cells when a mobile communication system including a CDMA-2000 system and a WCDMA system performs handover of a multi-mode multi-band terminal. Background technique [0002] Mobile communication services have continued to develop in the second half of the 1980s from the first generation of mobile communication services based on the Advanced Mobile Phone Service (AMPS) for analog cellular Low quality voice communication. 2nd generation mobile communication services enable enhanced voice communication and low rate (14.4kbps) dat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04W36/14H04W88/06
CPCH04W88/06H04W36/14H04W36/30H04W36/0085H04W36/0061
Inventor 金永洛辛星浩任锺太
Owner SK TELECOM CO LTD
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