METHOD AND APPARATUS TO PERFORM POWER CONSERVATION IN MULTIHOP NETWORKS
First Claim
Patent Images
1. A method for power conservation in a node operating in a multihop network, the method comprising the steps of:
- determining whether a broadcast frame in a beacon interval intended for the node has been previously received by the node; and
power saving during the beacon interval by going to sleep when the broadcast frame intended for the node has been previously received by the node.
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Abstract
A method and apparatus is provided for power conservation in a node operating in a multihop network. The method includes determining whether a broadcast frame in a beacon interval intended for the node has been previously received by the node and remaining awake for reception of the broadcast frame in the beacon interval if the broadcast frame intended for the node has not been previously received by the node.
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Citations
27 Claims
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1. A method for power conservation in a node operating in a multihop network, the method comprising the steps of:
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determining whether a broadcast frame in a beacon interval intended for the node has been previously received by the node; and power saving during the beacon interval by going to sleep when the broadcast frame intended for the node has been previously received by the node. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for beacon interval transmission in a node operating in a multihop network, the method comprising the steps of:
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determining whether the node has broadcast information for transmission to the multihop network; generating an Announcement Traffic Information Message (ATIM) management frame in response to determining the node has the broadcast information for transmission to the multihop network, the ATIM management frame including broadcast duplicate detection information for a receiving node to determine whether the broadcast information has been previously received; and transmitting the ATIM management frame to the multihop network within an ATIM window of a beacon interval and the broadcast information within a remainder of the beacon interval. - View Dependent Claims (9, 10, 11, 12)
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13. A method for beacon interval transmission in a node operating in a multihop network, the method comprising the steps of:
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determining whether the node has broadcast information for transmission to the multihop network; generating an action frame in response to determining the node has the broadcast information for transmission to the multihop network, the action frame including broadcast duplicate detection information for a receiving node to determine whether the broadcast information has been previously received; and transmitting the action frame to the multihop network within an Announcement Traffic Information Message (ATIM) window of a beacon interval and the broadcast information within a remainder of the beacon interval.
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14. A node operating in a multihop network, the node comprising:
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receiver circuitry for receiving radio frequency (RF) signals from other nodes in the multihop network, the receiver circuitry demodulating and decoding the RF signals to recover information therefrom, the information configured to include a plurality of predetermined beacon intervals, each of the plurality of predetermined beacon intervals including a message window and one or more frames of data; a controller coupled to the receiver circuitry to receive the information therefrom, the controller processing the information for utilization by the node; a power source for providing power to elements of the node; and power control circuitry coupled between the power source and the receiver circuitry for selectably energizing the receiver circuitry in response to a receiver activation signal, and wherein the controller is coupled to the power control circuitry and provides a receiver activation signal thereto to energize the receiver circuitry to remain awake to receive one or more frames of data of one of the plurality of predetermined beacon intervals in response to the controller determining the one of the plurality of predetermined beacon intervals includes a frame of data which is a broadcast frame intended for the node that has not been previously received by the node. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification