Mobile communications

Details Mobile communications Mobile communications

2006-08-08

2006-08-08

Eng, George (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S458000, C455S432100, C455S435100, C455S456100, C455S434000

Reexamination Certificate

active

07089001

ABSTRACT:
A method of automatically establishing a roaming service for a mobile telephone, that includes a pre-programmed SIM card, performs a Location Update in the following order.1. Registered Public Land Mobile Network (“RPLMN”), i.e. the last registered network as stored in the SIM directory EFLOCI(EF6F7E).2. Home PLMN (“HPLMN”)3. PLMNs contained in a “PLMN Selector” data field based on the “Operator List”.4. User-defined preferred PLMN5. Other PLMNs with received signal level above a predetermined strength in random order; and6. All other PLMNs in order of descending signal strength.

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Technical Specification Group Series & Series Aspects, Meeting 7, Madrid Spain (Mar. 15-17, 2002). pp. 7, 8, 9.

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