Power Line Communication Using Frequency Hopping
First Claim
1. A method of communication among multiple nodes via a shared power line medium, comprising:
- dividing the available carrier frequency spectrum in the shared power line medium into plural non-overlapping carrier frequency channels;
designating time slots for communications among the multiple nodes;
assigning to each node a frequency-hopping pattern in which a different respective frequency channel is employed during each time slot for communications with that node;
transmitting data from a first node to a second node during a given time slot, using the frequency channel assigned to one of the first and second nodes for that time slot; and
transmitting data from a third node to a fourth node during said given time slot, using the frequency channel assigned to one of the third and fourth nodes for that time slot.
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Accused Products
Abstract
Communications among multiple nodes via a shared power line medium are carried out by dividing the available frequency spectrum in the shared power line medium into plural non-overlapping channels. A first channel is assigned to a first group of nodes, and a second channel, different from the first channel, is assigned to a second group of nodes. Communications between the first group of nodes can occur simultaneously with communications between the second group of nodes via the shared power line medium. Time slots may be assigned for the communications between the first group of nodes that occurs simultaneously with the communications between the second group of nodes via the shared power line medium. The simultaneous communications between different groups of nodes via a shared power line medium may be implemented using a frequency-hopping spread spectrum technique.
59 Citations
4 Claims
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1. A method of communication among multiple nodes via a shared power line medium, comprising:
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dividing the available carrier frequency spectrum in the shared power line medium into plural non-overlapping carrier frequency channels; designating time slots for communications among the multiple nodes; assigning to each node a frequency-hopping pattern in which a different respective frequency channel is employed during each time slot for communications with that node; transmitting data from a first node to a second node during a given time slot, using the frequency channel assigned to one of the first and second nodes for that time slot; and transmitting data from a third node to a fourth node during said given time slot, using the frequency channel assigned to one of the third and fourth nodes for that time slot. - View Dependent Claims (2, 3, 4)
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Specification