Data transmission method in sensor network
First Claim
1. A data transmission method of a sending node among a plurality of sending nodes in a sensor network, the method comprising:
- generating data to be transmitted to a receiving node;
transmitting headers of the generated data to the receiving node in response to a Wake-up Notification Message (WNM) from the receiving node;
receiving a Grant Notification Message (GNM) from the receiving node, the GNM authorizing one sending node among the plurality of sending nodes to transmit a payload of the generated data;
transmitting the payload of the generated data when the sending node is the authorized sending node; and
switching into sleep mode without data transmission when the sending node is not the authorized sending node.
1 Assignment
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Accused Products
Abstract
Provided is a data transmission method of a plurality of sending nodes in a sensor network. In the data transmission method, data is generated to be transmitted to a receiving node, respectively. Headers of the generated data are transmitted to the receiving node, respectively, in response to a Wake-up Notification Message (WNM) from the receiving node. A Grant Notification Message (GNM) for selecting one of the plurality of sending nodes is received from the receiving node. The plurality of sending nodes transmit a payload of the generated data according to the GNM, or switch into sleep mode without data transmission.
15 Citations
17 Claims
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1. A data transmission method of a sending node among a plurality of sending nodes in a sensor network, the method comprising:
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generating data to be transmitted to a receiving node; transmitting headers of the generated data to the receiving node in response to a Wake-up Notification Message (WNM) from the receiving node; receiving a Grant Notification Message (GNM) from the receiving node, the GNM authorizing one sending node among the plurality of sending nodes to transmit a payload of the generated data; transmitting the payload of the generated data when the sending node is the authorized sending node; and switching into sleep mode without data transmission when the sending node is not the authorized sending node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A data reception method of a receiving node in a sensor network, the method comprising:
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receiving headers of data generated by a plurality of sending nodes in response to the plurality of sending nodes receiving a Wake-up Notification (WNM) message from the receiving node; selecting one of the plurality of sending nodes by referring to the earliest received headers; transmitting a Grant Notification Message (GNM) to a selected sending node, the GNM authorizing the selected sending node among the plurality of sending nodes to transmit a payload of the generated data; and receiving a payload of the data provided from the selected sending node authorized by the GNM. - View Dependent Claims (16, 17)
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Specification