Invention Grant
- Patent Title: Systems and methods for improving circuit switched fallback performance
- Patent Title (中): 改善电路交换后备性能的系统和方法
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Application No.: US13293996Application Date: 2011-11-10
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Publication No.: US09264945B2Publication Date: 2016-02-16
- Inventor: Shyamal Ramachandran , Xipeng Zhu
- Applicant: Shyamal Ramachandran , Xipeng Zhu
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Novak Druce Connolly Bove + Quigg LLP
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04W36/00 ; H04J1/16 ; H04W36/14 ; H04W60/04

Abstract:
Methods and apparatus for improving Circuit Switched (CS) Fallback performance, such as in an LTE network, are described. In one aspect, a UE may perform a RAU procedure before performing a CS call setup procedure when the UE has camped on a Non-DTM GERAN target after failing to access a redirection target. In another aspect, an MME may determine whether to perform a PS suspension based on an ISR status associated with a user terminal. In another aspect, an eNB may send information associated with a PS suspension to a user terminal.
Public/Granted literature
- US20120120789A1 SYSTEMS AND METHODS FOR IMPROVING CIRCUIT SWITCHED FALLBACK PERFORMANCE Public/Granted day:2012-05-17
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