METHOD FOR CLUSTER BASED DATA TRANSMISSION IN WIRELESS SENSOR NETWORKS

• US 20110130162A1
• Filed: 10/20/2010
• Published: 06/02/2011
• Est. Priority Date: 11/30/2009
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: PARK, Sang-Joon, MOON, Young-Bag, LIM, Keun-Woo, KO, Young-Bae
• Granted Patent: US 8,605,694 B2
• Time in Patent Office: Days
• US Class Current: 455/507
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information

Abstract

The present invention relates to a method for cluster based data in wireless sensor networks. The method includes: selecting any one of border nodes positioned at the edge of a cluster as a temporary cluster head as a temporary cluster head when a target is sensed in the cluster; bugging data of the temporary cluster head by border nodes in other adjacent cluster which do not sense the target to temporarily change the border node selected as the temporary cluster head to a cluster head of each of the border nodes; when the target is sensed by at least one of the border nodes, collecting data from each of the border nodes by the temporary cluster head to transferring the collected data to an actual cluster head of the temporary cluster head; and aggregating the collected data by actual cluster head of the temporary cluster head.

Claims

1. A method for cluster based data transmission in wireless sensor networks, comprising:

selecting any one of border nodes positioned at the edge of a cluster as a temporary cluster head, when a target is sensed in the cluster;

bugging data of the temporary cluster head by border nodes in other adjacent cluster which do not sense the target to temporarily change the border node selected as the temporary cluster head to a cluster head of each of the border nodes;

when the target is sensed by at least one of the border nodes, collecting data from each of the border nodes by the temporary cluster head to transferring the collected data to an actual cluster head of the temporary cluster head; and

aggregating the collected data by actual cluster head of the temporary cluster head.

2. The method for cluster based data transmission in wireless sensor networks according to claim 1, further comprising forming a temporary cluster including the border nodes and the temporary cluster head.

3. The method for cluster based data transmission in wireless sensor networks according to claim 1, further comprising, after the selecting, broadcasting data from the border node selected as the temporary cluster to its own cluster head.

4. The method for cluster based data transmission in wireless sensor networks according to claim 1, wherein the border nodes in other adjacent clusters are positioned within a data transmission range of the border node selected as the temporary cluster head.

5. The method for cluster based data transmission in wireless sensor networks according to claim 1, further comprising cancelling the temporary cluster head for a border node which does not sense the target for a predetermined time or more among the border nodes and changing the temporary cluster head to an actual cluster head of the corresponding border node.

6. The method for cluster based data transmission in wireless sensor networks according to claim 1, wherein when each of the border nodes transmits data to the temporary cluster head, a header of the data includes at least one of a node ID and cluster head information of the corresponding border node.

7. The method for cluster based data transmission in wireless sensor networks according to claim 1, wherein the aggregating the data aggregates data sensed by border nodes in other clusters with respect to the same target.

8. A method for cluster based data transmission in wireless sensor networks, comprising:

selecting any one of border nodes positioned at the edge of a cluster as a temporary cluster head, when a target is sensed in the cluster;

bugging data of the temporary cluster head by border nodes in other adjacent clusters to forming a temporary cluster including the border nodes and the temporary cluster head;

reselecting a border node having the highest priority among the border nodes as the temporary cluster head by comparing priorities of the border nodes in the temporary cluster;

collecting data from each of the border nodes by the temporary cluster head to transferring the collected data to cluster head of the temporary cluster head; and

aggregating the collected data by the cluster head of the temporary cluster head.

9. The method for cluster based data transmission in wireless sensor networks according to claim 8, further comprising, before the selecting, granting the priority to the cluster heads in each of clusters.

10. The method for cluster based data transmission in wireless sensor networks according to claim 9, wherein at the granting the priority to the cluster heads in each of clusters, the priority is granted on the basis of at least one of a distance between the cluster head and the nodes collecting data, remaining energy of the cluster head, and transmission capability of the cluster head.