MOBILE-ASSISTED CIRCUIT SWITCHED FALL BACK CALL RATE IMPROVEMENT IN MULTI-SIM DEVICES

Title:

MOBILE-ASSISTED CIRCUIT SWITCHED FALL BACK CALL RATE IMPROVEMENT IN MULTI-SIM DEVICES

Document Type and Number:

WIPO Patent Application WO/2018/090274

Kind Code:

A1

Abstract:

A method for circuit switched fall back (CSFB) for a multi-subscriber identity module (SIM) mobile communication device, includes: initiating a CSFB procedure; receiving an RRC Connection Release message without a redirected Carrier lnfo information element (IE); collecting neighbor cell information (NCI); and performing circuit switched (CS) call redirection to a neighbor cell based on collected NCI (CNCI).

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Inventors:

LI ANG (US)
DHANAPAL MUTHUKUMARAN (US)
GUAN XUEPAN (US)
DENG JUN (US)
GU HEWU (US)
CHEN XIAOCHEN (US)
HU PENG (US)
LIU HAIZHOU (US)
PANT NITIN (US)
KRISHNAMURTHY SUBASHINI (US)
MURUGAN MURALIDHARAN (US)
SIU TA-YAN (US)

Application Number:

PCT/CN2016/106207

Publication Date:

May 24, 2018

Filing Date:

November 17, 2016

Export Citation:

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Assignee:

QUALCOMM INC (US)
LI ANG (CN)
DHANAPAL MUTHUKUMARAN (US)
GUAN XUEPAN (CN)
DENG JUN (CN)
GU HEWU (CN)
CHEN XIAOCHEN (CN)
HU PENG (CN)
LIU HAIZHOU (CN)
PANT NITIN (US)
KRISHNAMURTHY SUBASHINI (US)
MURUGAN MURALIDHARAN (US)
SIU TA YAN (US)

International Classes:

H04W36/00

Domestic Patent References:

WO2016032712A1	2016-03-03
WO2013066060A1	2013-05-10

Foreign References:

US20160044545A1

2016-02-11

Attorney, Agent or Firm:

NTD PATENT & TRADEMARK AGENCY LIMITED (CN)

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