Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2008-04-15
2008-04-15
Mehrpour, Naghmeh (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S069000, C370S448000
Reexamination Certificate
active
09521394
ABSTRACT:
The present invention relates to an apparatus for transmitting and receiving signals in a wireless telecommunication system and to a method for transmitting random access bursts in such an apparatus. The apparatus1comprises transmitting means3for transmitting random access bursts, receiving means4for receiving acknowledgement information confirming a successful transmission of a random access burst, decision means for deciding if acknowledgement information has been received, and control means6for randomly choosing a time point for an attempt to retransmit said random access burst from an interval if no acknowledgement information has been received after a random access burst had been transmitted, whereby the control means sets the length of the interval depending on the number of unsuccessful attempts to transmit a random access burst. The proposed backoff scheme provides an improved performance and increased system stability without the need for a collision detection on the network side. Further, the proposed backoff scheme supports different priority classes for the transmission of random access bursts.
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Mehrpour Naghmeh
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Deutschland GmbH
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