Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-06-28
2011-06-28
Figueroa, Marisol (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S437000, C455S439000, C455S440000, C455S442000
Reexamination Certificate
active
07970403
ABSTRACT:
A mobile station includes a cell selector unit for performing a cell reselection procedure for a predetermined period after a failure of detection of a radio link with a first radio base station which manages a first cell, a connection re-establishment request signal transmitter unit for transmitting a connection re-establishment request signal to a second radio base station managing a selected second cell, when it is determined that the second cell is a cell using a same radio access scheme as that of the first cell, and a connection recovery procedure starter unit for starting a connection recovery procedure for a mobile exchange station managing the second radio base station, when it is determined that a response signal received from the second base station in response to the connection re-establishment request signal indicates rejection of connection re-establishment.
REFERENCES:
patent: 2008/0242292 (2008-10-01), Koskela et al.
patent: 2007-89135 (2007-04-01), None
Japanese Office Action mailed May 12, 2009; Reference No. 2008P00029, Japanese Patent Application Serial No. 2008-097623 with English translation (7 pages).
3GPP TS 36.300 v8.3.0, Dec. 2007; Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN), 121 pages.
Kanamoto et al., “Tanmatsu Idoji ni Okeru Packet Loss-less Handover no Teian” (English title: “A proposal of a packet loss-less handover when a terminal moves,”) Information Processing Society of Japan, Kenkyu Hokoku 2008-MLB-44 (14), Feb. 27, 2008, 11 pages.
International Search Report issued in PCT/JP2009/056086, mailed on Apr. 28, 2009, with translation, 4 pages.
Written Opinion issued in PCT/JP2009/056086, mailed on Apr. 28, 2009, 5 pages.
Ishii Minami
Iwamura Mikio
Nishida Katsutoshi
Figueroa Marisol
NTT Docomo Inc.
Osha • Liang LLP
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