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1. (WO2013154985) SPECIFYING AVAILABLE TELECOMMUNICATION STANDARDS IN RESPECTIVE GEOGRAPHIC REGIONS BASED ON MOBILE COUNTRY CODE

Pub. No.:    WO/2013/154985    International Application No.:    PCT/US2013/035600
Publication Date: Fri Oct 18 01:59:59 CEST 2013 International Filing Date: Tue Apr 09 01:59:59 CEST 2013
IPC: H04W 48/18
Applicants: APPLE INC.
Inventors: ANANTHARAMAN, Karthik
BAEK, Sang Ho
RAO, Bharath Narasimha
CHAUDHARY, Madhusudan
Title: SPECIFYING AVAILABLE TELECOMMUNICATION STANDARDS IN RESPECTIVE GEOGRAPHIC REGIONS BASED ON MOBILE COUNTRY CODE
Abstract:
A user equipment (UE) device may communicate according to at least two telecommunication standards. The UE may generate a second preferred roaming list based on a first preferred roaming list. The first preferred roaming list may indicate geographic locations which support a first telecommunication standard, of which some may also support a second telecommunication standard. The second preferred roaming list may indicate geographic locations which support only the first telecommunication standard and may also indicate geographic locations which support both the first telecommunication standard and the second telecommunication standard. The second preferred roaming list may be used to perform roaming, which may facilitate the UE avoiding searching for the second telecommunication standard in geographic locations which support only the first telecommunication standard.