APPARATUS AND METHOD FOR CELL SEARCHING IN PORTABLE COMMUNICATION TERMINAL

A cell searching device of a portable terminal and a method thereof are provided to search whether a 3G communication network exists if a packet service is attempted while the terminal is in a waiting state of being connected to a 2G communication network, to be assigned with a 3G communication netw...

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Bibliographic Details
Main Authors KOO, IN HOE, HA, EU JIN, SONG, YONG SOO
Format Patent
LanguageEnglish
Published 07.04.2008
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
WIRELESS COMMUNICATIONS NETWORKS
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Summary:A cell searching device of a portable terminal and a method thereof are provided to search whether a 3G communication network exists if a packet service is attempted while the terminal is in a waiting state of being connected to a 2G communication network, to be assigned with a 3G communication network channel which supports a high speed packet service, thereby performing the packet service. A storage(114) stores information on a PLMN(Public Land Mobile Network). A cell searcher(122) searches a cell area to decide whether a 3G communication network exists in the cell area where a portable terminal is located. A cell selector(120) controls the searched information on the PLMN to be stored in the storage, and controls the terminal to be connected with the 3G communication network by performing a location updating process if the terminal attempts a packet service in a waiting state of being connected to a 2G communication network in the cell area where the 2G communication network and the 3G communication network coexist.
Bibliography:Application Number: KR20060097110