Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2004-05-13
2010-06-01
Gelin, Jean A (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S438000, C455S439000
Reexamination Certificate
active
07729699
ABSTRACT:
In a mobile communication system having an ATM-processed transfer path, a non-instantaneous interrupt handover can be realized. In a mobile communication network including an ATM-processed transfer path, when a mobile station is moved between cells during communication, frames are received to be identified by a mobile switching center. The frames contain the same data received from both base stations covering the cell range at asynchronous timing different from each other. A selection is made of header information with the lowest error rate from the header information of these frames. The frames are connected at instructed timing. Also, the frames to be transmitted to a plurality of base stations are duplicated, and then transmission timing is specified from these header information. These duplicated frames are transmitted at the specified transmission timing, so that the non-instantaneous interrupt handover is carried out.
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Kusaki Tsutomu
Murakami Masaru
Sakamoto Ken'ichi
Yokoyama Takashi
Gelin Jean A
Hitachi Communication Technologies Ltd.
Sofer & Haroun LLP
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