Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1997-11-12
2000-08-22
Vo, Nguyen
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455442, 370335, H04Q 720
Patent
active
061085464
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.
REFERENCES:
patent: 5434853 (1995-07-01), Hemmady et al.
patent: 5633868 (1997-05-01), Baldwin et al.
patent: 5930714 (1999-07-01), Abu-Amara et al.
TIA/EIA Interim Standard, "Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System", Telecommunications Industry Association, May 1995.
Kusaki Tsutomu
Murakami Masaru
Sakamoto Ken'ichi
Yokoyama Takashi
Bhattacharya Sam
Hitachi , Ltd.
Vo Nguyen
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