METHODS AND SYSTEM FOR SYNCHRONIZING NODES IN A WIRELESS NETWORK
First Claim
1. A method of wirelessly time synchronizing a target node with a source node, the method comprising:
- sending to the source node a request for time synchronizing the target node with the source node;
determining a first time, T1, indicative of a time of transmission of a first radio signal from the source node to the target node;
determining a second time, T2, indicative of a time of receipt of the first radio signal at the target node;
determining a third time, T3, indicative of a time of transmission of a second radio signal from the target node to the source node;
determining a fourth time, T4, indicative of a time of receipt of the second radio signal at the source node; and
determining a clock offset based on the times T1, T2, T3 and T4 for use in time synchronizing the target node with the source node.
3 Assignments
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Accused Products
Abstract
A method and nodes for wireless timing synchronization of a target node and a source node. In some embodiments, a request is sent to a source node for time synchronizing the target node with the source node. A first time, T1, indicative of time of transmission of a first radio signal from the source node to the target node is determined. A second time, T2, indicative of time of receipt of the first radio signal at the target node is determined. A third time, T3, indicative of time of transmission of a second radio signal from the target node to the source node is determined. A fourth time, T4, indicative of time of receipt of the second radio signal at the source node is determined. A clock offset based on T1, T2, T3 and T4 for use in time synchronizing the target node with the source node is determined.
18 Citations
33 Claims
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1. A method of wirelessly time synchronizing a target node with a source node, the method comprising:
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sending to the source node a request for time synchronizing the target node with the source node; determining a first time, T1, indicative of a time of transmission of a first radio signal from the source node to the target node; determining a second time, T2, indicative of a time of receipt of the first radio signal at the target node; determining a third time, T3, indicative of a time of transmission of a second radio signal from the target node to the source node; determining a fourth time, T4, indicative of a time of receipt of the second radio signal at the source node; and determining a clock offset based on the times T1, T2, T3 and T4 for use in time synchronizing the target node with the source node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A node configured to wirelessly time synchronize a target node with a source node, the node comprising:
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a processor; a memory configured to store instructions that, when executed by the processor, cause the node to; send to the source node a request for time synchronizing the target node with the source node; determine a first time, T1, indicative of a time of transmission of a first radio signal from the source node to the target node; determine a second time, T2, indicative of a time of receipt of the first radio signal at the target node; determine a third time, T3, indicative of a time of transmission of a second radio signal from the target node to the source node; determine a fourth time, T4, indicative of a time of receipt of the second radio signal at the source node; and determine a clock offset based on the times T1, T2, T3 and T4 for use in time synchronizing the target node with the source node. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A non-transitory computer readable memory configured to store executable instructions that when executed by a processor, configure the processor to:
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send to a source node a request for time synchronizing a target node with the source node; determine a first time, T1, indicative of a time of transmission of a first radio signal from the source node to the target node; determine a second time, T2, indicative of a time of receipt of the first radio signal at the target node; determine a third time, T3, indicative of a time of transmission of a second radio signal from the target node to the source node; determine a fourth time, T4, indicative of a time of receipt of the second radio signal at the source node; and determine a clock offset based on the times T1, T2, T3 and T4 for use in time synchronizing the target node with the source node.
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Specification