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Control of WLAN selection policies in roaming scenarios

  • US 9,743,268 B2
  • Filed: 12/26/2013
  • Issued: 08/22/2017
  • Est. Priority Date: 03/29/2013
  • Status: Active Grant
First Claim
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1. A user equipment (UE) device, comprising:

  • processing circuitry and a radio transceiver for both cellular and WLAN (wireless local area network) access, wherein the processing circuitry is configured to;

    determine that network access has been acquired from a visited cellular operator and one or more WLANs (wireless local area network),retrieve, in response to said determination, a setting that indicates a preference for IP (internet protocol) address preservation when switching between cellular and WLAN access;

    if the preference indicates that IP address preservation is not to be performed, prefer policies for network selection and routing as indicated by ANDSF (access network and discovery selection function) information received from an H-ANDSF (home operator ANDSF) server over information received from a V-ANDSF (visited operator ANDSF) server; and

    if the preference indicates that IP address preservation is to be performed, prefer policies for network selection and routing as indicated by the V-ANDSF server over those as indicated by the H-ANDSF server wherein the V-ANDSF server indicates that the visited cellular operator has support for WLAN access using an S2a interface.

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