METHOD TO BOOTSTRAP INTO A FREQUENCY AGILE AD HOC NETWORK OF RADIOS THAT USE A NON-DETERMINISTIC FREQUENCY PATTERN
First Claim
1. A method for facilitating late entry of a late entrant node into an ad-hoc radio network, comprising:
- accessing from a memory at the late entrant node an initial frequency hopping sequence for said ad-hoc radio network, said initial frequency hopping sequence specifying a plurality of frequencies, each respectively assigned to one of a plurality of defined frequency hops of said frequency hopping sequence;
using at least said initial frequency hopping sequence at said late entrant node to determine at least a first frequency to monitor during a communication epoch corresponding to one of said frequency hops, said first frequency included in a current hopping sequence of said ad-hoc network;
detecting the presence of a signal transmitted by a participating node of said network during said communication epoch by monitoring at least said first frequency; and
determining a second frequency included in said current hopping sequence of said network based on information contained in said signal.
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Accused Products
Abstract
A method to facilitate late entry of a late entrant node into an ad-hoc radio network involves accessing from a memory at the late entrant node an initial frequency hopping sequence for the ad-hoc radio network. The late entrant node uses at least the initial frequency hopping sequence to determine a first frequency to monitor during a communication epoch corresponding to one of the frequency hops. The late entrant node thereafter monitors the first frequency to detect the presence of a beacon signal transmitted by a participating node of the network. Subsequently, the late entrant node determines a second frequency included in the current hopping sequence of the network based on information contained in the beacon signal.
20 Citations
33 Claims
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1. A method for facilitating late entry of a late entrant node into an ad-hoc radio network, comprising:
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accessing from a memory at the late entrant node an initial frequency hopping sequence for said ad-hoc radio network, said initial frequency hopping sequence specifying a plurality of frequencies, each respectively assigned to one of a plurality of defined frequency hops of said frequency hopping sequence; using at least said initial frequency hopping sequence at said late entrant node to determine at least a first frequency to monitor during a communication epoch corresponding to one of said frequency hops, said first frequency included in a current hopping sequence of said ad-hoc network; detecting the presence of a signal transmitted by a participating node of said network during said communication epoch by monitoring at least said first frequency; and determining a second frequency included in said current hopping sequence of said network based on information contained in said signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 31, 32, 33)
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17. A method for facilitating late entry of a late entrant node into an ad-hoc radio network, comprising:
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accessing from a memory at the late entrant node an initial frequency hopping sequence for said ad-hoc radio network, said initial frequency hopping sequence specifying a plurality of frequencies, each respectively assigned to one of a plurality of defined frequency hops of said frequency hopping sequence; detecting the presence of a signal transmitted by a participating node of said network during said communication epoch by monitoring at least a first frequency; and determining a second frequency included in said current hopping sequence of said network based on information contained in said signal.
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18. A communication transceiver for an ad-hoc radio network, comprising:
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a computer processing device configured to access from a memory at the communication transceiver an initial frequency hopping sequence for said ad-hoc radio network, said initial frequency hopping sequence specifying a plurality of frequencies, each respectively assigned to one of a plurality of defined frequency hops of said frequency hopping sequence; use at least said initial frequency hopping sequence at said communication transceiver to determine at least a first frequency to monitor during a communication epoch corresponding to one of said frequency hops, said first frequency included in a current hopping sequence of said ad-hoc network; detect the presence of a signal transmitted by a participating node of said network during said communication epoch by monitoring at least said first frequency; and determine a second frequency included in said current hopping sequence of said network based on information contained in said signal. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification