Methods and apparatus for reduced energy communication in an ad hoc network
First Claim
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1. A communication device comprising:
- a first transceiver for transmitting a communication initiation message using low power transmissions to initiate communication with a second communication device in an ad hoc network;
a second transceiver for transmitting data packets to the second communication device subsequent to initiating communications using the low power transmissions;
a communications control processor in communication with the first transceiver and the second transceiver;
configured for;
receiving scheduling data from the second communication device sufficient to predict a time at which the second communication device will be accepting data communications;
causing the first transceiver to transmit the communication initiation message to the second communication device at the predicted time;
causing the second transceiver to transmit at least one of the data packets to the second communication device subsequent to transmitting the communication initiation message.
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Abstract
The invention relates to communications devices for reduced energy communications in an ad hoc network. The communication device includes a first low powered transceiver for initiating communications with other communications devices and a second transceiver for transmitting data messages to the other communications devices once communication is initiated. The communication device also includes a communications control processor for determining times at which the other communications devices will be available to receive communications based on scheduling data received from those communication devices.
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Citations
38 Claims
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1. A communication device comprising:
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a first transceiver for transmitting a communication initiation message using low power transmissions to initiate communication with a second communication device in an ad hoc network;
a second transceiver for transmitting data packets to the second communication device subsequent to initiating communications using the low power transmissions;
a communications control processor in communication with the first transceiver and the second transceiver;
configured for;
receiving scheduling data from the second communication device sufficient to predict a time at which the second communication device will be accepting data communications;
causing the first transceiver to transmit the communication initiation message to the second communication device at the predicted time;
causing the second transceiver to transmit at least one of the data packets to the second communication device subsequent to transmitting the communication initiation message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A communication device comprising:
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a first low powered transceiver for receiving data communication initiation messages from a second communication device in an ad hoc network;
a second transceiver for receiving data packets from the second communication device in the ad hoc network subsequent to the first transceiver receiving the data communication initiation message;
a communications control processor in communication with the first lower- powered transceiver and the second transceiver for;
causing the second transceiver to transmit scheduling data to the second communication device sufficient to inform the second communication device of the times at which the communication device will be available for receiving data messages;
powering-up the first low-powered transceiver based on the scheduling data to allow receipt of incoming communication initiation messages; and
in response to the first low-powered transceiver receiving a communication initiation message, powering up the second transceiver to receive an incoming data packet. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of transmitting data from a first communication device to a second communication device in an ad hoc network comprising:
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predicting a time at which the second communication device of the ad hoc network will accept data packets based on scheduling data received from the second communication device;
transmitting by the first communication device of the ad hoc network a communication initiation message to the second communication device at the predicted time using a first low-powered transceiver;
transmitting, by the first communication device, after the transmission of the communication initiation message, a data packet to the second communication device using a second transceiver. - View Dependent Claims (23, 24, 25, 26, 27)
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22. A method of receiving data at a first communication device from a second communication device in an ad hoc network comprising:
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transmitting, by the first communication device, scheduling data to the second communication device sufficient to inform the second communication device of at least one time at which the first communication device will be available to receive a data packet;
powering-up a first transceiver by the first communication device based on the scheduling data; and
in response to the first transceiver receiving a communication initiation message, powering up a second transceiver by the first communication device to receive an incoming data packet.
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28. A communication device comprising:
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a first transceiver for transmitting data packets to a second communication device;
a communications control processor in communication with the transceiver for;
receiving scheduling data from a second communication device sufficient to predict, using a shared pseudorandom number generator, a time at which the second communication device will be accepting data communications; and
causing the first transceiver to transmit a data packet to the second communication device at about the predicted time. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method of transmitting a data packet from a first communication device to a second communication device:
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receiving scheduling data from the second communication device at the first communication device;
predicting, using the scheduling data and a shared pseudorandom number generator, a time at which the second communication device is available to receive data packets;
transmitting a data packet to the second communication device at about the predicted time.
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Specification