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Method and apparatus for handling roaming lists in a wireless communication system

  • US 6,999,762 B2
  • Filed: 06/05/2002
  • Issued: 02/14/2006
  • Est. Priority Date: 06/05/2002
  • Status: Expired due to Term
First Claim
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1. A method for updating a roaming list in a mobile station storing a roaming list in a first format selected from one of a Preferred Roaming List format indicative of a first protocol version and an Extended Preferred Roaming List format indicative of a second protocol version, comprising:

  • receiving a roaming list format identifier that identifies a protocol version supported by a network, wherein the roaming list format identifiers allow the mobile station to request either the Preferred Roaming List format or the Extended Preferred Roaming List format stored at the mobile station;

    transmitting an error message if the format identifier is not compatible with the first format; and

    transmitting configuration information of the first format if the format identifier is compatible with the first format.

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