Terminal device and communication control method

A UE (User Equipment) comprising:

• reception circuitry configured for:
• receiving an ANDSF (Access Network Discovery and Selection Function) Policy from an ANDSF located in a Home PLMN (Public Land Mobile Network), wherein
• the ANDSF Policy contains an ISRP (Inter-System Routing Policy) and/or an IARP (Inter-APN Routing Policy);
• and
• receiving RAN information containing a threshold for switching communication paths, from an LTE access network;
• a storage configured for storing the ANDSF Policy and the RAN information;
• and
• a controller configured for making a decision of an access network by comparing a third OPI (Offload Preference Indicator) with a first OPI and/or a second OPI,
• wherein:
• the access network is selected from between the LTE access network and a WLAN access network,
• the ISRP contains the first OPI,
• the IARP contains the second OPI, and
• the RAN information contains the third OPI.

A communication control method for use in a UE (User Equipment), the method comprising:

• receiving an ANDSF (Access Network Discovery and Selection Function) Policy from an ANDSF located in a Home PLMN (Public Land Mobile Network), wherein
• the ANDSF Policy contains an ISRP (Inter-System Routing Policy) and/or an IARP (Inter-APN Routing Policy);
• receiving RAN information containing a threshold for switching communication paths, from an LTE access network;
• and
• selecting an access network by using the ISRP and/or the IARP, if the UE has the ANDSF Policy and the RAN information,
• wherein:
• the access network is selected from between the LTE access network and a WLAN access network,
• the ISRP contains a first OPI (Offload Preference Indicator),
• the IARP contains a second OPI, and
• the RAN information contains a third OPI.

A communication control method for use in a UE (User Equipment), the method comprising:

• receiving an ANDSF (Access Network Discovery and Selection Function) Policy from an ANDSF located in a Home PLMN (Public Land Mobile Network), wherein
• the ANDSF Policy contains an ISRP (Inter-System Routing Policy) and/or an IARP (Inter-APN Routing Policy);
• receiving RAN information containing a threshold for switching communication paths from an LTE access network;
• storing the ANDSF Policy and the RAN information;
• and
• making a decision of an access network by comparing a third OPI (Offload Preference Indicator) with a first OPI and/or a second OPI,
• wherein:
• the access network is selected from between the LTE access network and a WLAN access network,
• the ISRP contains the first OPI,
• the IARP contains the second OPI, and
• the RAN information contains the third OPI.