SYSTEM AND METHOD FOR TIME SYNCHRONIZATION IN A WIRELESS NETWORK
First Claim
1. A system comprising:
- multiple wireless nodes forming a cluster in a wireless network, each wireless node configured to communicate and exchange data wirelessly based on a clock;
wherein one of the wireless nodes is configured to operate as a cluster master and each of the other wireless nodes is configured to (i) receive time synchronization information from a parent node, (ii) adjust its clock based on the received time synchronization information, and (iii) broadcast time synchronization information based on the time synchronization information received by that wireless node;
wherein the time synchronization information received by each of the other wireless nodes is based on time synchronization information provided by the cluster master so that the other wireless nodes substantially synchronize their clocks with the clock of the cluster master.
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Abstract
A system includes multiple wireless nodes forming a cluster in a wireless network, where each wireless node is configured to communicate and exchange data wirelessly based on a clock. One of the wireless nodes is configured to operate as a cluster master. Each of the other wireless nodes is configured to (i) receive time synchronization information from a parent node, (ii) adjust its clock based on the received time synchronization information, and (iii) broadcast time synchronization information based on the time synchronization information received by that wireless node. The time synchronization information received by each of the other wireless nodes is based on time synchronization information provided by the cluster master so that the other wireless nodes substantially synchronize their clocks with the clock of the cluster master.
103 Citations
20 Claims
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1. A system comprising:
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multiple wireless nodes forming a cluster in a wireless network, each wireless node configured to communicate and exchange data wirelessly based on a clock; wherein one of the wireless nodes is configured to operate as a cluster master and each of the other wireless nodes is configured to (i) receive time synchronization information from a parent node, (ii) adjust its clock based on the received time synchronization information, and (iii) broadcast time synchronization information based on the time synchronization information received by that wireless node; wherein the time synchronization information received by each of the other wireless nodes is based on time synchronization information provided by the cluster master so that the other wireless nodes substantially synchronize their clocks with the clock of the cluster master. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless node comprising:
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a transceiver configured to communicate with other wireless nodes including a second wireless node and a third wireless node in a wireless network cluster; and a controller configured to; receive time synchronization information from the second wireless node; substantially synchronize the wireless node to the second wireless node using the received time synchronization information; and initiate transmission of time synchronization information to the third wireless node, the third wireless node configured to substantially synchronize to the second wireless node using the transmitted time synchronization information. - View Dependent Claims (12, 13, 14, 15)
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16. A method comprising:
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receiving time synchronization information from a first wireless node at a second wireless node; substantially synchronizing the second wireless node to the first wireless node using the received time synchronization information; and transmitting time synchronization information from the second wireless node to a third wireless node in the cluster, the third wireless node configured to substantially synchronize to the second wireless node using the transmitted time synchronization information, the wireless nodes forming at least part of a cluster in a wireless network. - View Dependent Claims (17, 18, 19, 20)
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Specification