Routing method in sensor network
OwnerYoung Hwan Ham, Hyeon Park +2inventors
InventorsYoung Hwan Ham, Hyeon Park, Sang Joon Park, Cheol Sig Pyo
Life of this patent
Estimating the term…
Abstract
Provided is a routing method capable of expanding a conventional tree routing to perform the efficient and safe key management in a sensor network environment that requires the symmetric key based key management. Each sensor node transmits a Route Reverse message to a sink node to set a reverse tree routing path. Therefore, it is possible to provide efficient and safe key management mechanism and communication environment by providing a bidirectional communication between a sink node and sensor nodes through an expanded tree routing such that a user is provided with a safe sensor network.
Claims14
A routing method in a sensor network, the method comprising:
- setting a tree routing path to a sink node by determining, at each node in the sensor network, a parent node based on a HELLO message broadcasted by the sink node;
- and
- setting a reverse tree routing path from the sink node by transmitting, at each node which has determined a parent node, a Route Reverse message considering the sink node as a final node to the parent node along the tree routing path.
A routing method of setting an information transmission path for establishing a pairwise key in a sensor network of a tree structure, the method comprising:
- transmitting, at each of a source node and a destination node to establish a pairwise key, a Route Reverse message including its identifying information and considering a sink node as a final node in a parent node direction of the tree structure;
- generating, at nodes having received the Route Reverse message on the transmission path, an entry of a routing table based on the identifying information and identifying information of an directly connected lower child node;
- and
- transmitting, at the source node, information for establishing the pairwise key to the destination node through the sink node using a reverse tree routing path set based on the routing table.
Dependencies are inferred from the claim text.