The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2018
Filed:
Sep. 23, 2016
Htc Corporation, Taoyuan, TW;
Kundan Tiwari, Taoyuan, TW;
HTC Corporation, Taoyuan, TW;
Abstract
A communication device of handling a Non Access Stratum procedure comprises instructions of accessing a first network by using the first IMSI; transmitting a first NAS request message to the first network by using the first IMSI; receiving a NAS response message comprising a timer value and a cause value from the first network; starting a timer for the first IMSI with the timer value; not transmitting a second NAS request message to the first network by using the first IMSI, if the timer is running for the first IMSI; changing from the first IMSI to the second IMSI without removing the USIM; keeping the timer running, after changing to the second IMSI; accessing a second or the first network by using the second IMSI; and transmitting a third NAS request message to the second or the first network by using the second IMSI, when the timer is running.