Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2011-08-09
2011-08-09
Sheikh, Ayaz R (Department: 2476)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C714S748000, C455S436000, C455S437000, C455S438000, C455S439000, C455S440000, C455S441000, C455S442000, C455S443000, C455S444000
Reexamination Certificate
active
07995582
ABSTRACT:
Disclosed is the retransmission control method used in a mobile communication system including mobile terminals (MTs), base stations (BSs) and the radio network controller (RNC) which controls the BSs. When an MT detects data error, it sends the 1st negative acknowledgement (NACK) to the BS. This first NACK includes a cell ID which indicates the cell where the reception data is transmitted. When cell ID in this 1st NACK includes cell ID of a cell besides the cell which the BS itself manages, the BS sends the 2nd NACK to the RNC. This 2nd NACK includes the cell ID and the data number to specify the data in which the mobile terminal detected the data error. The RNC decides the BS where data is to be retransmitted based on the cell IDs in the 2nd NACK and sends data retransmission request to the decided BS.
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Chau Peter
NEC Corporation
Sheikh Ayaz R
Sughrue & Mion, PLLC
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