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Systems and methods for access network selection and traffic routing

  • US 9,967,727 B2
  • Filed: 09/26/2013
  • Issued: 05/08/2018
  • Est. Priority Date: 02/22/2013
  • Status: Active Grant
First Claim
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1. User equipment (UE) comprising:

  • a memory device to store an access network detection and selection function (ANDSF) management object (MO), wherein the ANDSF MO comprises network routing rules for routing IP traffic matching a specific IP flow, at least one network routing rule identifying 3rd Generation Partnership Project (3GPP) radio access technology (RAT) types and relative WLAN routing priorities for each of the 3GPP RAT types with respect to wireless local area network (WLAN) access for the IP traffic flows, the relative routing priorities of 3GPP RAT types with respect to WLAN access defined distinctly from 3GPP RAT mobility selection priorities, the 3GPP RAT types including global system for mobile communications (GSM) enhanced data rates for GSM evolution (EDGE) radio access network (GERAN), universal terrestrial radio access network (UTRAN) and evolved UTRAN (E-UTRAN),wherein the ANDSF MO comprises an XML data scheme with leaf nodes indicating a specific RAT type; and

    a processor to;

    select a 3GPP RAT comprising a 3GPP RAT type;

    identify an available WLAN access;

    simultaneously provide connections to the WLAN access and the 3GPP RAT;

    compare, based on the at least one network routing rule, a relative routing priority of the 3GPP RAT type with respect to WLAN to form a comparison, without influencing the 3GPP RAT selection; and

    when the relative WLAN priority of the selected 3GPP RAT is less is greater than the selected 3GPP RAT, route traffic through the available WLAN access based on the comparison;

    when the relative WLAN priority of the selected 3GPP RAT is greater than the WLAN, route traffic through the 3GPP RAT based on the-comparison.

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