Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2008-04-01
2008-04-01
Le, Danh (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S438000, C455S439000, C370S331000, C370S338000
Reexamination Certificate
active
07353029
ABSTRACT:
Disclosed is a handover method for an IP-based next generation mobile communication system. With a handover method including 1) determining whether or not a predetermined mobile terminal goes into the overlapping area; 2) starting a Layer3(L3) handover operation between the neighboring access routers as the mobile terminal goes into the overlapping area; 3) if the Layer3handover operation between the neighboring access routers is completed, establishing a data path for the mobile terminal to pass through an access router after the Layer3handover; 4) if the mobile terminal leaves a cell area including the mobile terminal in steps 2) and 3), performing by the mobile terminal Layer2handover between cells and receiving by the mobile terminal data through a cell base station after the Layer2handover and an access router before the Layer3handover; and 5) if the mobile terminal leaves a cell area including the mobile terminal after step 3), performing by the mobile terminal Layer2handover between cells and receiving by the mobile terminal data through a cell base station after the Layer2handover and an access router after the Layer3handover.
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Bahk Sae-Woong
Cho Sung-Hyun
Choi Young-June
Do Mi-Sun
Lee Neung-Hyung
Le Danh
Samsung Electronics Co,. Ltd.
Seoul National University Industry Foundation
The Farrell Law Firm PC
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