Handover processing method of mobile communication system

Details Handover processing method of mobile communication system Handover processing method of mobile communication system

2008-01-01

2008-01-01

Feild, Joseph (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S442000, C455S522000, C455S434000, C370S352000

Reexamination Certificate

active

10644996

ABSTRACT:
In a handover processing method of a mobile communication system, when a radio link set (active set update) message is received from a RNC (radio network controller), the method includes performing a backup of a present radio link set and changing the present radio link set according to the radio link set message; operating a timer when the radio link set is changed and transmitting a radio link set completion (active set update complete) message to the RNC; and reverting the changed radio link set back to the previous backed-up radio link set when a reply signal is not received from the RNC even though the operation time of the timer expires.

REFERENCES:
patent: 6236860 (2001-05-01), Hagting et al.
patent: 2003/0031119 (2003-02-01), Kim et al.
patent: 2004/0114574 (2004-06-01), Zeira et al.
3GPP TS 25.322 v3.7.0 (Jan. 6, 2001) RLC Protocol Specification (Release 1999), Section 4.2.1.3 and Sections 9-11.6.6.3.
3GPP TS 25.303 V3.12.0 (Feb. 6, 2002) RRR Call Flow Specification (Release 1999), Sections 6.4.1-6.4.7.
3GPP TS 25.331 v3.11.0 (Feb. 6, 2002) Radio Resource Control Protocol Specification (Release 1999).

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