Abstract
A wireless communications network including a base station ( 10) and wireless units (UE) is disclosed. The wireless units (UE) request a connection with the base station (10) by the transmission of a preamble within time slots designated by the base station (10). The disclosed preambles are Walsh Hadamard code symbols repeated a number of times so as to have the same length as a cell-specific scrambling code. The wireless unit (UE) requesting a connection pseudo-randomly selects a time slot from those available and one of the Walsh Hadamard code symbols replicates the code symbol into a spread interleaved bitstream scrambles this bitstream and transmits it to the base station (10). Upon receipt the base station (10) applies the incoming bitstream to a matched filter (98) to descramble the signal following which the symbol is de-interleaved by way of a sequence of delay lines (100). Despreaders (102) generate each bit of the symbol from corresponding taps of the delay lines (100) and the symbol is applied to a correlator (104 126 136) to determine the transmitted preamble.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
3G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC |
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3G | 22/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC |
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3G | 16/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member |
Specification Information
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Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||
US7173919B1 | 3G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC |
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Yes | Basis Patent | |||
US7173919B1 | 3G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
US7173919B1 | 3G | 22/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC |
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Yes | Basis Patent | |||
US7173919B1 | 3G | 16/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
US2004264550A1 | 3G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
US2004264550A1 | 3G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC |
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No | Family Member | |||
US2004264550A1 | 3G | 22/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC |
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S2
S3
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Yes | Family Member | |||
US2004264550A1 | 3G | 16/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
US7324485B2 | 3G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
US7324485B2 | 3G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC |
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No | Family Member | |||
US7324485B2 | 3G | 22/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC |
S1
S2
S3
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Yes | Family Member | |||
US7324485B2 | 3G | 16/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member | ||||
US8174955B2 | 3G | 04/04/2008 | ISLD-200804-017 | TEXAS INSTRUMENTS INC |
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No | Family Member | |||
US8174955B2 | 3G | 22/03/2012 | ISLD-201203-017 | TEXAS INSTRUMENTS INC |
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S2
S3
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No | Family Member | |||
US8174955B2 | 3G | 16/10/2015 | ISLD-201509-009 | TEXAS INSTRUMENTS INC | Yes | Family Member |
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
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