Method of routing path in wireless sensor networks based on clusters
First Claim
1. A routing method for a wireless sensor network having a sensor field defined by a plurality of clusters each including a plurality of sensor nodes and a header node, one of the cluster is a destination cluster including a sink node, comprising:
- announcing, at at least one source node which is the sensor node detecting an event, the event by transmitting a data announcement packet;
requesting, at the sink node, the source node to transmit data required for ubiquitous services; and
transmitting, at the at least one source node, data to the sink node,wherein announcing the event comprises;
relaying, at the at least one source node, a data announcement packet from a source cluster to which the source node belongs to a destination cluster which is arranged along an ith second direction axis through the header nodes of the clusters arranged along a first direction axis of the source cluster,wherein the ith second direction axis is a center second direction axis in the sensor field, and the first direction axis is a vertical direction axis in the sensor field, wherein the sensor field comprises the clusters defined at cross sections of a plurality of first and second direction axes.
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Abstract
A routing method for a cluster-based wireless sensor network is provided for improving lifespan of the network and reducing network traffic. A routing method is proposed for a wireless sensor network having a sensor field defined by a plurality of clusters each including a plurality of sensor nodes and a header node, one of the cluster is a head cluster including a sink node. The routing method includes announcing, at least one sensor node which is the sensor node detected an event, the event; requesting, at the sink node, the source node to transmit data required for ubiquitous services; and transmitting, at the at least one source node, data to the sink node. Announcing the event includes relaying, at the at least one source node, a data announcement packet from a source cluster to which the source node belongs to a destination cluster which is arranged along an ith second direction axis through the header nodes of the clusters arranged along a first direction axis of the source cluster. The routing method of the present invention reduces the transmission amounts of data request and data packets, thereby conserving the energy and bandwidth, resulting in improvement of network life time.
10 Citations
18 Claims
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1. A routing method for a wireless sensor network having a sensor field defined by a plurality of clusters each including a plurality of sensor nodes and a header node, one of the cluster is a destination cluster including a sink node, comprising:
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announcing, at at least one source node which is the sensor node detecting an event, the event by transmitting a data announcement packet; requesting, at the sink node, the source node to transmit data required for ubiquitous services; and transmitting, at the at least one source node, data to the sink node, wherein announcing the event comprises; relaying, at the at least one source node, a data announcement packet from a source cluster to which the source node belongs to a destination cluster which is arranged along an ith second direction axis through the header nodes of the clusters arranged along a first direction axis of the source cluster, wherein the ith second direction axis is a center second direction axis in the sensor field, and the first direction axis is a vertical direction axis in the sensor field, wherein the sensor field comprises the clusters defined at cross sections of a plurality of first and second direction axes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification