Coordination of silent periods for dynamic spectrum manager (DSM)
First Claim
1. A method for use in a Dynamic Spectrum Manager (DSM) for coordinating asynchronous silent periods in a network, the method comprising:
- determining a time-to-trigger (TTT) period for triggering asynchronous sensing events;
sending the TTT period to a plurality of cognitive radio (CR) nodes in the network;
receiving an asynchronous sensing event report generated based on the TTT period; and
sending a silent period control message to one or more CR nodes in the network, wherein the message comprises an indication of a start time of a silent period.
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Abstract
A method for use in a Dynamic Spectrum Manager (DSM) for coordinating asynchronous silent periods in a network, the method comprising detecting a primary user in the network, transmitting a Silent Period Start Control Message to one or more cognitive radio (CR) nodes in the network, wherein the message indicates the start and duration of a silent period and initiates spectrum sensing, receiving a Measurement Report Control Message from the one or more CR nodes in the network indicating results of spectrum sensing, and transmitting a message to the one or more CR nodes, wherein the message instructs the one or more CR nodes to move to a different frequency based on the spectrum sensing results.
78 Citations
21 Claims
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1. A method for use in a Dynamic Spectrum Manager (DSM) for coordinating asynchronous silent periods in a network, the method comprising:
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determining a time-to-trigger (TTT) period for triggering asynchronous sensing events; sending the TTT period to a plurality of cognitive radio (CR) nodes in the network; receiving an asynchronous sensing event report generated based on the TTT period; and sending a silent period control message to one or more CR nodes in the network, wherein the message comprises an indication of a start time of a silent period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A dynamic spectrum manager (DSM) device for coordinating asynchronous silent periods in a network, the device comprising:
a processor configured to; determine a time-to-trigger (TTT) period for triggering asynchronous sensing events; send the TTT period to a plurality of cognitive radio (CR) nodes in the network; receive an asynchronous sensing event report generated based on the TTT period; and in response to the asynchronous sensing event report, send a silent period control message to one or more CR nodes in the network, wherein the message comprises an indication of a start time of a silent period.
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12. A method for use in a cognitive radio (CR) node for coordinating asynchronous silent periods, the method comprising:
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determining whether a drop in a channel quality persists for a time period longer than a time-to-trigger (TTT) period; on a condition that the drop persists for a time period longer than the TTT period, sending an asynchronous sensing event report; receiving a silent period control message that indicates a start time of a silent period; and performing spectrum sensing in accordance with the received start time of the silent period. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A cognitive radio (CR) node for coordinating asynchronous silent periods, the CR node comprises:
a processor configured to; determine whether a drop in a channel quality persists for a time period longer than a time-to-trigger (TTT) period; on a condition that the drop persists for a time period longer than the TTT period, send an asynchronous sensing event report; receive a silent period control message that indicates a start time of a silent period; and perform spectrum sensing in accordance with the received start time of the silent period.
Specification