WIRELESS COMMUNICATION NETWORK AND DATA AGGREGATION METHOD FOR THE SAME
First Claim
1. A wireless communication network comprising:
- a network coordinator comprising a first number of channels and a second number of wireless transceivers; and
a plurality of nodes, each of said nodes comprising status information, a corresponding second number of channels and a corresponding second number of wireless transceivers,wherein at least some of said nodes are structured to communicate with said network coordinator through multi-hop communication,wherein said nodes and said network coordinator are structured to communicate in a Carrier Sense Multiple Access mode,wherein each of said nodes is structured to communicate the status information thereof to or toward said network coordinator in a Time Division Multiple Access mode,wherein said Time Division Multiple Access mode has a plurality of time slots,wherein said network coordinator is structured to assign said time slots and said channels to said nodes in order to provide a plurality of collision-free schedules for said nodes in said Time Division Multiple Access mode, andwherein said network coordinator is further structured to send, for each of said nodes, a corresponding one of said collision-free schedules to or toward a corresponding one of said nodes, said corresponding one of said collision-free schedules including a corresponding number of said time slots and a corresponding number of said channels that the corresponding one of said nodes employs to communicate the status information thereof to or toward said network coordinator in said Time Division Multiple Access mode.
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Accused Products
Abstract
A wireless communication network includes a network coordinator (NC) having plural channels and plural wireless transceivers, and plural nodes. Each node has status information, a number of channels and a number of wireless transceivers. Each node and the NC communicate in a Carrier Sense Multiple Access mode. Each node communicates the status information thereof to or toward the NC in a Time Division Multiple Access mode having plural time slots. The NC assigns the time slots and the channels to the nodes to provide a plurality of collision-free schedules therefor. The NC sends, for each node, a corresponding one of the collision-free schedules to or toward a corresponding one of the nodes. Each collision-free schedule includes a corresponding number of the time slots and a corresponding number of the channels that the corresponding one of the nodes employs to communicate the status information thereof to or toward the NC.
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Citations
24 Claims
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1. A wireless communication network comprising:
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a network coordinator comprising a first number of channels and a second number of wireless transceivers; and a plurality of nodes, each of said nodes comprising status information, a corresponding second number of channels and a corresponding second number of wireless transceivers, wherein at least some of said nodes are structured to communicate with said network coordinator through multi-hop communication, wherein said nodes and said network coordinator are structured to communicate in a Carrier Sense Multiple Access mode, wherein each of said nodes is structured to communicate the status information thereof to or toward said network coordinator in a Time Division Multiple Access mode, wherein said Time Division Multiple Access mode has a plurality of time slots, wherein said network coordinator is structured to assign said time slots and said channels to said nodes in order to provide a plurality of collision-free schedules for said nodes in said Time Division Multiple Access mode, and wherein said network coordinator is further structured to send, for each of said nodes, a corresponding one of said collision-free schedules to or toward a corresponding one of said nodes, said corresponding one of said collision-free schedules including a corresponding number of said time slots and a corresponding number of said channels that the corresponding one of said nodes employs to communicate the status information thereof to or toward said network coordinator in said Time Division Multiple Access mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A data aggregation method for a wireless communication network including a plurality of nodes, said nodes including a network coordinator, a plurality of child nodes and a plurality of parent nodes, said method comprising:
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defining a network topology of a plurality of pairs of said child nodes and said parent nodes in said wireless communication network, each of said pairs including one of said child nodes and one of said parent nodes; collecting network topology information from said wireless communication network and assigning a plurality of time slots and a number of channels to said nodes in order to provide a plurality of collision-free schedules for all of said nodes; for each of said child nodes and said parent nodes, sending a corresponding collision-free schedule to or toward a corresponding one of said child nodes and said parent nodes; including, with said corresponding collision-free schedule, a corresponding time slot and a corresponding channel that the corresponding one of said child nodes and said parent nodes employs to send status information to or toward said network coordinator; and for each of said child nodes and said parent nodes, starting at the corresponding time slot, sending said status information to or toward said network coordinator on the corresponding channel. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A wireless communication network comprising:
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a network coordinator comprising a first number of channels and a second number of wireless transceivers; and a plurality of nodes, each of said nodes comprising status information, a corresponding second number of channels and a corresponding second number of wireless transceivers, wherein at least some of said nodes are structured to communicate with said network coordinator through multi-hop communication, wherein said nodes and said network coordinator are structured to communicate in a Carrier Sense Multiple Access mode, wherein said network coordinator is structured to command said nodes to exit said Carrier Sense Multiple Access mode and enter a Time Division Multiple Access mode, wherein each of said nodes is structured to communicate the status information thereof to or toward said network coordinator in said Time Division Multiple Access mode, wherein said Time Division Multiple Access mode has a plurality of time slots, and wherein said network coordinator is structured to assign said time slots and said channels to said nodes in order to provide a plurality of collision-free schedules for said nodes in said Time Division Multiple Access mode.
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Specification