Beacon signaling in a wireless system
First Claim
1. A method of operating a transmitter in a frequency division multiplexed communications system the transmitter using a set of N tones to communicate information over a first period of time using first signals into a first region, 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 into said first region, where X is less than 5, and where at least 80% of a maximum average total transmission power, used by said transmitter to transmit signals into the first region during any 1 second period during said first period of time, is allocated to said set of X tones during said second period of time.
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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 into a region, e.g., sector of a cell, 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 used for transmitting into said region 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 used for transmitting into the region is available for transmitting other tones with the power normally being distributed among multiple tones. Often some tones which would be transmitted in a symbol time go unused during transmission of the high power signals.
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Citations
43 Claims
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1. A method of operating a transmitter in a frequency division multiplexed communications system the transmitter using a set of N tones to communicate information over a first period of time using first signals into a first region, 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 into said first region, where X is less than 5, and where at least 80% of a maximum average total transmission power, used by said transmitter to transmit signals into the first region during any 1 second period during said first period of time, is allocated to said set of X tones during said second period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A communications device for use in a frequency division multiplexed communications system, the communications device comprising:
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a transmitter that uses a set of N tones to communicate information into a first region; first control means coupled to said transmitter, for controlling the transmitter to transmit over a first period of time using first signals into the first region, 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 into said first region, where X is less than 5, and where at least 80% of a maximum average total transmission power, used by said transmitter to transmit into the first region during any 1 second period during said first period of time, is allocated to said set of X tones during said second period of time. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A computer readable medium including computer executable instructions stored thereon for controlling a communications device to implement a communications method, the communications method including:
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controlling a transmitter in a frequency division multiplexed communications system to use a set of N tones to transmit information on first signals during a first period of time into a first region, said first period of time being at least two seconds long, where N is larger than 10; and controlling the transmitter to transmit during a second period of time a second signal including a set of X tones into said first region, where X is less than 5, and where at least 80% of a maximum average total transmission power, used by said transmitter to transmit signals into the first region during any 1 second period during said first period of time, is allocated to said set of X tones during said second period of time. - View Dependent Claims (35, 36)
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37. A communication device comprising a processor configured to implement a communications method, the communications method including:
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controlling a transmitter in a frequency division multiplexed communications system to use a set of N tones to transmit information on first signals during a first period of time into a first region, said first period of time being at least two seconds long, where N is larger than 10; and controlling the transmitter to transmit during a second period of time a second signal including a set of X tones into said first region, where X is less than 5, and where at least 80% of a maximum average total transmission power, used by said transmitter to transmit signals into the first region during any 1 second period during said first period of time, is allocated to said set of X tones during said second period of time. - View Dependent Claims (38, 39)
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40. A communications device for use in a frequency division multiplexed communications system, the communications device comprising:
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a transmitter that uses a set of N tones to communicate information into a first region; and a control module coupled to said transmitter, for controlling the transmitter to;
i) transmit over a first period of time using first signals into the first region, said first period of time being at least two seconds long, where N is larger than 10 and ii) transmit during a second period of time a second signal including a set of X tones into said first region, where X is less than 5, and where at least 80% of a maximum average total transmission power, used by said transmitter to transmit into the first region during any 1 second period during said first period of time, is allocated to said set of X tones during said second period of time. - View Dependent Claims (41, 42, 43)
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Specification