Methods of messaging control of dynamic frequency selection (DFS) for cognitive radio based dynamic spectrum access network systems
First Claim
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1. A DFS messaging method for a DYSPAN system comprising:
- performing an initial channel availability check;
announcing a DFS decision based on RF sensing results from the initial channel availability check to customer devices in the system and to base stations in neighboring systems;
hopping to a selected frequency if the DFS decision is effective and starting data transmissions; and
simultaneously with the data transmissions, continually sensing selected frequencies on selective channels using in-band channels for data transmission while sensing on out-of-band channels simultaneously, and using guard bands between the in-band channels and the out-of-band channels in order to mitigate adjacent interference caused by data transmission to the out-of-band channel sensing.
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Abstract
This invention relates to cognitive radio based wireless communications of dynamic spectrum access networks, and more particularly to a method of addressing messaging control for dynamic frequency selection. The method of the invention provides an efficient, reliable and flexible messaging mechanism for DFS decision-making that is critical for licensed incumbent protection and inter-system coexistence of dynamic spectrum access systems.
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Citations
20 Claims
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1. A DFS messaging method for a DYSPAN system comprising:
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performing an initial channel availability check; announcing a DFS decision based on RF sensing results from the initial channel availability check to customer devices in the system and to base stations in neighboring systems; hopping to a selected frequency if the DFS decision is effective and starting data transmissions; and simultaneously with the data transmissions, continually sensing selected frequencies on selective channels using in-band channels for data transmission while sensing on out-of-band channels simultaneously, and using guard bands between the in-band channels and the out-of-band channels in order to mitigate adjacent interference caused by data transmission to the out-of-band channel sensing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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