US Patent No. 9,516,689

MITIGATING NO-SERVICE DELAYS FOR LTE CAPABLE WIRELESS DEVICES WITHOUT LTE ACCESS PERMISSION


Patent No. 9,516,689
Issue Date December 06,2016
Title Mitigating No-service Delays For Lte Capable Wireless Devices Without Lte Access Permission
Inventorship Krisztian Kiss, Hayward, CA (US)
Assignee Apple Inc., Cupertino, CA (US)

Claim of US Patent No. 9,516,689

1. A method, comprising:
by a mobility management entity (MME) of a first public land mobile network (PLMN):
receiving an E-UTRAN (Evolved Universal Terrestrial Access Network) non-access stratum (NAS) request from a wireless user
equipment (UE) device;

determining to reject the request;
sending a rejection response to the request, wherein the rejection response comprises an evolved packet service mobility management
(EMM) cause #15 specifying “no suitable cells in tracking area”, wherein the rejection response further comprises an extended
EMM cause information element (IE) with a value “E-UTRAN not allowed”.