Method and arrangement for white space device transmission
First Claim
1. A method in a white space device of a secondary wireless system, for transmitting a first signal on a channel available for secondary usage allocated to a primary wireless system, the method comprising:
- determining a further channel used by the primary wireless system, that would be interfered by a transmission of the first signal on the channel available for secondary usage,retrieving signal information associated with the determined further channel from the primary wireless system,transmitting the first signal on the channel available for secondary usage, andtransmitting a second signal on the determined further channel based on the retrieved signal information, simultaneously with the first signal on the channel available for secondary usage, such that an interference generated in the primary wireless system by the first signal transmission is compensated for by the second signal transmission.
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Accused Products
Abstract
The disclosure relates to a white space device (WSD) of a secondary wireless network, and to a related method for transmitting a first signal on a channel available for secondary usage allocated to a primary wireless system. The method in the WSD comprises determining (410) a further channel used by the primary wireless system, that would be interfered by a transmission of the first signal on the channel available for secondary usage, retrieving (420) signal information associated with the determined further channel from the primary wireless system, transmitting (430) the first signal on the channel available for secondary usage, and transmitting (440) a second signal on the determined further channel based on the retrieved signal information, simultaneously with the first signal on the channel available for secondary usage* such that an interference generated in the primary wireless system by the first signal transmission is compensated for by the second signal transmission.
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Citations
14 Claims
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1. A method in a white space device of a secondary wireless system, for transmitting a first signal on a channel available for secondary usage allocated to a primary wireless system, the method comprising:
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determining a further channel used by the primary wireless system, that would be interfered by a transmission of the first signal on the channel available for secondary usage, retrieving signal information associated with the determined further channel from the primary wireless system, transmitting the first signal on the channel available for secondary usage, and transmitting a second signal on the determined further channel based on the retrieved signal information, simultaneously with the first signal on the channel available for secondary usage, such that an interference generated in the primary wireless system by the first signal transmission is compensated for by the second signal transmission. - View Dependent Claims (2, 3, 4, 5)
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6. A method in a control unit for supporting a white space device transmitting a first signal on a channel available for secondary usage allocated to a primary wireless system, the method comprising:
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receiving a request for accessing the channel available for secondary usage from the white space device, the request comprising at least one of;
parameters for estimating the interference generated in the primary wireless system by the first signal transmission;
parameters related to a transmitting capability of the white space device; and
a desired transmit power level for the first signal transmission;determining information related to a further channel used by the primary wireless system, wherein the further channel would be interfered by the first signal transmission on the channel available for secondary usage, the information being determined based on the received request and on parameters related to the primary wireless system available in the control unit, and the information comprising an identity of the further channel and a required transmit power level for a second signal transmission by the white space device on the further channel to compensate for interference caused on the further channel by the first signal transmission, and transmitting the determined information to the white space device. - View Dependent Claims (7)
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8. A white space device configured to be used in a secondary wireless system, and to transmit a first signal on a channel available for secondary usage allocated to a primary wireless system, the white space device comprising:
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a processing unit configured to; determine a further channel used by the primary wireless system, that would be interfered by a transmission of the first signal on the channel available for secondary usage, and retrieve signal information associated with the determined further channel from the primary wireless system, a first transmitter for transmitting the first signal on the channel available for secondary usage, and a second transmitter for transmitting a second signal on the determined further channel based on the retrieved signal information, simultaneously with the first signal on the channel available for secondary usage, such that an interference generated in the primary wireless system by the first signal transmission is compensated for by the second signal transmission. - View Dependent Claims (9, 10, 11, 12)
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13. An apparatus operative as a control unit configured to support a white space device transmitting a first signal on a channel available for secondary usage allocated to a primary wireless system, the apparatus comprising:
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interface circuitry configured to receive a request for accessing the channel available for secondary usage from the white space device, the request comprising at least one of;
parameters for estimating the interference generated in the primary wireless system by the first signal transmission;
parameters related to a transmitting capability of the white space device; and
a desired transmit power level for the first signal transmission; andprocessing circuitry configured to; determine information related to a further channel used by the primary wireless system, wherein the further channel would be interfered by the first signal transmission on the channel available for secondary usage, the information being determined based on the received request and on parameters related to the primary wireless system available in the control unit, and the information comprising an identity of the further channel and a required transmit power level for a second signal transmission by the white space device on the further channel to compensate for interference caused on the further channel by the first signal transmission, and transmit the determined information to the white space device, via the interface circuitry. - View Dependent Claims (14)
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Specification