METHOD FOR TRANSMITTING DATA AND METHOD FOR RECEIVING DATA
First Claim
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1. A method for receiving data from a plurality of child nodes by a parent node in a sensor network including the parent node and the plurality of child nodes, comprising:
- receiving first reservation information that includes a size of data to be transmitted by a first node among the plurality of child nodes from the first node in a first period;
broadcasting first channel allocation information on the first node based on the first reservation information in the first period so that the first node performs data transmission in a second or third period; and
maintaining a sleep mode from the broadcasting of the first channel allocation information to a time when the first period ends.
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Abstract
Provided is a method for minimizing energy consumption while increasing a data rate between sensor nodes in a sensor network. In the sensor network, a parent node receives reservation information from a first node among a plurality of child nodes in a first period and broadcasts channel allocation information of the first node according to the reservation information in the first period so that the first node performs the data transmission in a second period or third period and maintains a sleep mode until the first period ends.
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10 Claims
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1. A method for receiving data from a plurality of child nodes by a parent node in a sensor network including the parent node and the plurality of child nodes, comprising:
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receiving first reservation information that includes a size of data to be transmitted by a first node among the plurality of child nodes from the first node in a first period; broadcasting first channel allocation information on the first node based on the first reservation information in the first period so that the first node performs data transmission in a second or third period; and maintaining a sleep mode from the broadcasting of the first channel allocation information to a time when the first period ends. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for transmitting data to a parent node by one of a plurality of child nodes in a sensor network including the parent node and the plurality of child nodes, comprising:
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attempting occupation of a contention interval of a first period; transmitting reservation information that includes node identification information and size information of data to be transmitted to the parent node in the contention interval of the first period, when the child node occupies the contention interval of the first period; receiving control information that includes the node identification information and channel allocation information from the parent node in the control interval of the first period; maintaining a sleep mode of the first period from the receiving of the control information to a time when the first period ends; and transmitting first data to the parent node in a transmission interval of a second period according to the channel allocation information. - View Dependent Claims (9, 10)
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Specification