METHOD AND APPARATUS FOR AVOIDING CIRCUIT-SWITCHED CALL DROP IN MOBILE COMMUNICATIONS

Title:

METHOD AND APPARATUS FOR AVOIDING CIRCUIT-SWITCHED CALL DROP IN MOBILE COMMUNICATIONS

Document Type and Number:

WIPO Patent Application WO/2018/219041

Kind Code:

A1

Abstract:

Various solutions for avoiding circuit-switched call drop with respect to user equipment and network apparatus in mobile communications are described. An apparatus may transmit a non-access stratum (NAS) message in a NAS signaling connection. The apparatus may receive a NAS response message. The apparatus may initiate a timer to control the NAS signaling connection. The apparatus may further receive a circuit-switched (CS) service notification. The apparatus may stop the timer and execute a CS service procedure.

Inventors:

HUANG YU-CHENG (CN)
HUANG-FU CHIEN-CHUN (CN)
NIEMI MARKO (FI)

Application Number:

PCT/CN2018/082272

Publication Date:

December 06, 2018

Filing Date:

April 09, 2018

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MEDIATEK INC (CN)

International Classes:

H04W76/00

Foreign References:

EP2509345A1	2012-10-10
CN106686565A	2017-05-17

Other References:

"3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS) Stage 3", 3GPP TS 24.301, vol. CT WG1, 16 December 2016 (2016-12-16), pages 1 - 470, XP051230034
"3GPP TS 24.301", 17 March 2017, article "3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3 (Release 14)"
See also references of EP 3628136A4

Attorney, Agent or Firm:

BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)

Download PDF:

View/Download PDF PDF Help

Previous Patent: DISPLAY METHOD AND DEVICE, AND STORAGE MEDIUM

Next Patent: WATER DROPLET GENERATING APPARATUS