Mobile communication system, radio terminal used thereof,...

Details Mobile communication system, radio terminal used thereof,... Mobile communication system, radio terminal used thereof,...

2008-03-25

2008-03-25

Ly, Nghi H. (Department: 2617)

Telecommunications

Radiotelephone system

Message storage or retrieval

C455S440000, C455S442000, C455S437000, C370S331000

Reexamination Certificate

active

10748165

ABSTRACT:
It is an object of the present invention to make it possible to grasp the number of terminals, which are planned to receive data of an MBMS service, accurately in an RNC even if movement of a radio terminal between RNCs occurs. In the case in which the movement of the radio terminal between RNCs has occurred during a period until the radio terminal actually received service data after it joined the MBMS service, the radio terminal notifies a moving destination RNC of at least identification information for specifying a moving source RNC. Then, the moving destination RNC notifies the RNC specified by the notified identification information that the radio terminal has left a cell. Consequently, both the moving source RNC and the moving destination RNC become capable of accurately grasping the number of radio terminals, which receive the service, and can perform judgment on whether a PtP system or a PtM system is adopted.

REFERENCES:
patent: 6701155 (2004-03-01), Sarkkinen et al.
patent: 2 371 179 (2002-07-01), None
patent: 2371179 (2002-07-01), None
patent: 2002-368757 (2002-12-01), None
patent: WO 2004/017580 (2004-02-01), None
Chinese Office Action dated Feb. 24, 2006 (with English translation).
United Kingdom Search Report dated Jun. 25, 2004.

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