Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-06-28
2011-06-28
Hu, Jinsong (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S436000, C455S437000, C455S438000, C455S439000, C370S331000, C370S332000, C370S333000, C370S334000
Reexamination Certificate
active
07970405
ABSTRACT:
The present invention relates to a method of transmitting data in a handover between base stations. When a mobile terminal performs a handover between base stations in a wireless communication system, a gateway transmits data traffic to be transmitted to a mobile terminal by using an IGMP (Internet Group Management Protocol) to a serving base station being serviced to the mobile terminal and a target base station to which a handover of the mobile terminal is made in a bi-casting method. Accordingly, when the mobile terminal performs the handover between the base stations, the gateway transmits the data traffic in the bi-casting method. As a result, it is possible to efficiently use a resource of a user plane connection interval between the gateway and the base station, thereby minimizing the loss of data traffic transmitted in a downlink, that is, data.
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Baek Seung-Kwon
Kim Yeong-Jin
Shin Yeon-Seung
Song Jae-Su
Electronics and Telecommunications Research Institute
Hong Dung
Hu Jinsong
Ladas & Parry LLP
Samsung Electronics Co,. Ltd.
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