×

Mobile station with intelligent roaming and over-the-air programming features

  • US 5,950,130 A
  • Filed: 03/18/1997
  • Issued: 09/07/1999
  • Est. Priority Date: 03/18/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. An intelligent roaming process for enabling a mobile station to locate a preferred system within a communication network when a home system of said mobile station is not available, said communication network comprising a plurality of service areas, each of said service areas being assigned a system identification number, said intelligent roaming process comprising:

  • accessing, when said home system is not available, a system access list (SAL) stored in said mobile station, said SAL containing one or more system identification numbers and one or more pre-stored frequency bands, corresponding to each said one or more system identification numbers, where the mobile station should attempt to obtain service, said frequency bands being in a priority order;

    comparing a system identification number of said current service area to said one or more system identification number contained in said SAL to determine if a preferred system exists for said current service area; and

    identifying, when a preferred system is determined to exist for said current service area, a frequency band, based on a priority order, where said mobile station can locate said preferred system for said current service area.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×