Beacon signaling in a wireless system
First Claim
1. A method of operating a base station transmitter in a frequency division multiplexed communications system the base station transmitter using a set of N tones to communicate information over a first period of time using first signals, said first period of time being at least two seconds long, where N is larger than 10, the method comprising:
- transmitting during a second period of time a second signal including a set of X tones, where X is less than 5, and where at least 80% of a maximum average total base station transmission power used by said base station transmitter during any 1 second period during said first period of time is allocated to said set of X tones.
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Accused Products
Abstract
A few high power tones used for synchronization and/or other purposes are transmitted in a FDM system during a period of time, e.g., a symbol transmission time period. During normal data transmission symbol periods signals are transmitted using at least 10 tones, e.g., per symbol time. Less than 5 high power signals are transmitted in a symbol time with at least 80% the maximum total transmitter power transmitted being allocated to the high power signals where the maximum total transmitter power is determined from a period of time which may includes one or more data and/or high power tone transmission periods. When the high power tones are transmitted at most 20% of transmitter power is available for transmitting other tones with the power normally being distributed among multiple tones. Normally some tones which would be transmitted in a symbol time go unused during transmission of the high power signals.
164 Citations
32 Claims
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1. A method of operating a base station transmitter in a frequency division multiplexed communications system the base station transmitter using a set of N tones to communicate information over a first period of time using first signals, said first period of time being at least two seconds long, where N is larger than 10, the method comprising:
transmitting during a second period of time a second signal including a set of X tones, where X is less than 5, and where at least 80% of a maximum average total base station transmission power used by said base station transmitter during any 1 second period during said first period of time is allocated to said set of X tones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A base station for use in a frequency division multiplexed communications system the base station, the base station comprising:
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a transmitter that uses a set of N tones to communicate information;
first control means coupled to said transmitter, for controlling the transmitter to transmit over a first period of time using first signals, said first period of time being at least two seconds long, where N is larger than 10; and
second control means coupled to said transmitter for controlling the transmitter to transmit during a second period of time a second signal including a set of X tones, where X is less than 5, and where at least 80% of a maximum average total base station transmission power used by said base station transmitter during any 1 second period during said first period of time is allocated to said set of X tones. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification