REDUCING INTERFERENCE
First Claim
1. A terminal configured to operate in white space in a wireless communications network, the terminal comprising:
- a transmitter for transmitting a wireless signal on a channel lying in the frequency range 450 MHz to 800 MHz;
a power controller for setting the transmit power of the wireless signal at a transmit level by adjusting the gain of a power amplifier, wherein the power controller is configured to detect a commencement time for a transmission burst and to adjust the gain over a ramping period from an initial level to the transmit level; and
a data generator configured to generate ramping data for transmission during the ramping period and information data for transmission at the transmit level, wherein the ramping period is in the range 10 ms to 1 s.
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Accused Products
Abstract
A terminal is configured to operate in white space in a wireless communications network, the terminal including: a transmitter for transmitting a wireless signal on a channel lying in the frequency range 450 MHz to 800 MHz; a power controller for setting the transmit power of the wireless signal at a transmit level by adjusting the gain of a power amplifier, wherein the power controller is configured to detect a commencement time for a transmission burst and to adjust the gain over a ramping period from an initial level to the transmit level; and a data generator configured to generate ramping data for transmission during the ramping period and information data for transmission at the transmit level, wherein the ramping period is in the range 10 ms to 1 s.
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Citations
17 Claims
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1. A terminal configured to operate in white space in a wireless communications network, the terminal comprising:
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a transmitter for transmitting a wireless signal on a channel lying in the frequency range 450 MHz to 800 MHz; a power controller for setting the transmit power of the wireless signal at a transmit level by adjusting the gain of a power amplifier, wherein the power controller is configured to detect a commencement time for a transmission burst and to adjust the gain over a ramping period from an initial level to the transmit level; and a data generator configured to generate ramping data for transmission during the ramping period and information data for transmission at the transmit level, wherein the ramping period is in the range 10 ms to 1 s. - View Dependent Claims (2, 3, 4, 5)
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6. A method of reducing interference, the method comprising, at a terminal:
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detecting a commencement time; adjusting the gain of a power amplifier operating to adjust the transmit power of a signal over a ramping period from an initial level to a transmit level; and transmitting ramping data during the ramping period and thereafter transmitting information data. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wireless communications network, comprising:
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multiple terminals each configured to transmit wireless signals in the same allocated transmission period, each terminal transmitting its information signal on a uniquely allocated channel for the period, and each terminal configured to; detect a commencement time for the transmission period, to adjust the gain of a power amplifier operating and adjust the transmit power of a signal over a ramping period from an initial level to a transmit level, and transmit ramping data during the ramping period on a ramping channel which is a common channel to the other terminals and thereafter transmit information data on its uniquely allocated channel; and a network controller configured to transmit to the terminals their respective unique information channels. - View Dependent Claims (17)
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Specification