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.

Date of Patent:
Jul. 03, 2018

Filed:

Sep. 22, 2017
Applicant:

Mediatek Inc., Hsinchu, TW;

Inventors:

Yu-Syuan Jheng, Taipei, TW;

Chien-Chun Huang-Fu, Hsinchu, TW;

Hung-Lin Chang, Taipei, TW;

Yuan-Chieh Lin, Taipei, TW;

Assignee:

MEDIATEK INC., HsinChu, TW;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04W 36/00 (2009.01); H04W 76/06 (2009.01); H04W 76/04 (2009.01);
U.S. Cl.
CPC ...
H04W 76/068 (2013.01); H04W 36/0066 (2013.01); H04W 76/046 (2013.01);
Abstract

Methods and apparatus are provided to reduce service interruption for intra-RAT and inter-RAT handover procedures. The UE performs a NAS signaling procedure via a NAS signaling connection in a mobile communication network. The UE monitors a radio resource status and determines whether a radio bearer has been or is being established for a RRC connection for data transmission. The UE determines whether to release the NAS signaling connection after completing the NAS signaling procedure based on whether the radio bearer has been established. In one embodiment, the UE monitors a radio resource status and determines whether a radio bearer has been established for a RRC connection for data transmission. The UE determines whether to start a timer upon completing the NAS signaling procedure based on whether the radio bearer has been or is being established.


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