Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2007-01-02
2007-01-02
Vuong, Quochien B. (Department: 2684)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C340S007430, C340S298000
Reexamination Certificate
active
10369837
ABSTRACT:
An ACK/NACK method and system for use in time division duplex (TDD) and frequency division duplex (FDD) systems. In high speed downlink packet access (HSDPA), based on the assignment of timeslots for the high speed shared information channel (HS-SICH), each user equipment (UE) can be assigned two (2) different channelization codes. It is then possible to adopt the signaling convention that one code represents acknowledge error-free (Ack) and the other code shall represent acknowledge error condition (Nack). The Node B is able to distinguish the presence of the transmitted channelization code as opposed to the channelization code which is not transmitted. The probability of error, using this invention is an order of a magnitude smaller than if the Ack/Nack were signaled using typical modulation techniques.
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Bolourchi Nader
Dick Stephen G.
Kim Younglok
Shin Sung-Hyuk
InterDigital Technology Corporation
Rego Dominic E.
Volpe and Koenig P.C.
Vuong Quochien B.
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