Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-03-14
2006-03-14
Gary, Erika A. (Department: 2681)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S063100, C455S516000, C370S465000, C370S342000
Reexamination Certificate
active
07013146
ABSTRACT:
The present invention provides a method to enhance the RACH message transmission of a wireless communication systems. Therefore the known RACH procedure for uplink transmission is extended by additional steps in order to allow the usage of adaptive transmission parameters for uplink transmissions, preferably the usage of adaptive modulation and coding (AMC). This is advantageous because studies in high-speed downlink packet access show the possibility to increase the data rate of a downlink shared channel. The method according to the invention introduces a new RACH message preamble and enables the base station to estimate suitable adaptive transmission parameters like an AMC setting according to the current transmission conditions which are used during the RACH message transmission.
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3rdGeneration Partnership Project, Technical Specification Group Radio Access Network, “Physical Channels and Mapping of Transport Channels onto Physical Channels(FDD)” Release 1999, 3GPP TS 25.211, version 3.5.0 (Dec. 2000), 45 pages.
Guan Hao
Wang Yan
Zhao Suli
Fressola Alfred A.
Gary Erika A.
Nokia Corporation
Ware Fressola Van Der Sluys & Adolphson LLP
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