Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-05-02
2011-10-11
Ly, Nghi (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S432300, C455S422100, C455S518000, C370S328000, C370S338000
Reexamination Certificate
active
08036659
ABSTRACT:
The method for requesting an Internet Multimedia Sub-system (IMS) unregistered User Equipment (UE) to perform IMS registration including initiating an IMS domain session or sending an IMS relevant signaling to a called subscriber by a UE A; informing the UE A information that the called subscriber has not registered with the IMS by the network; requesting the called terminal to conduct IMS registration by the UE A; and restarting the IMS session after the called terminal completes the IMS registration. An IMS unregistered UE can also perform IMS service.
REFERENCES:
patent: 2002/0111167 (2002-08-01), Nguyen et al.
patent: 2004/0184435 (2004-09-01), Westman
patent: 2004/0190498 (2004-09-01), Kallio
patent: 2005/0021351 (2005-01-01), Koskinen et al.
patent: 2005/0083909 (2005-04-01), Kuusinen
PTO/ISA/210 PCT International Search Report (3 pages).
PTO/ISA/237 PCT Written Opinion of the International Searching Authority (4 pages).
Oliver Haase et al., Unified Mobility Manager: Enabling Efficient SIP/UMTS Mobile Network Control, IEEE Wireless Communications, Aug. 2003.
Li Xiaoqiang
Sun Chunying
Beijing Samsung Telecom R&D Center
Ly Nghi
Samsung Electronics Co,. Ltd
The Farrell Law Firm P.C.
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