Multiplex communications – Communication over free space – Repeater
Reexamination Certificate
2005-11-22
2005-11-22
Rao, Seema S. (Department: 2666)
Multiplex communications
Communication over free space
Repeater
C370S335000, C370S345000, C370S342000, C370S349000, C370S438000, C370S439000, C370S441000
Reexamination Certificate
active
06967935
ABSTRACT:
A method for performing communication between a base station and a mobile station through a designated channel is disclosed. The method comprises transmitting an access parameter message including fields indicating preamble duration and slot duration having a length of a multiple of given slot duration from the base station to the mobile station, the base station previously knowing each start time point of the slots having the multiple slot duration; transmitting a control message including fields indicating a designated channel number and a data rate from the base station to the mobile station over a common channel; receiving, in the mobile station, the control message and transmitting to the base station an access probe including a preamble having the preamble duration and a succeeding response message beginning at one of the start time points of the slots having the multiple slot duration at the data rate through a designated channel associated with the designated channel number in the control message; and determining in the base station whether the preamble of the access probe is received, beginning at each start time point of the slots having the multiple slot duration.
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Songson Sun; Krzymien, W.A.; Darian, B.; A new efficient contentionless access protocol for packet data transmission in CDMA systems, Vehicular Technology Conference Proceedings, May 15-18, 2000, IEEE 51st, Vol.: 1 , p. 36-40.
Ahn Jae-Min
Moon Hi-Chan
Park Jin-Soo
Bhandari Puneet
Dilworth & Barrese LLP
Rao Seema S.
Samsung Electronics Co,. Ltd.
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