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Unformatted text preview: 3 (N-message); INS: Instruction (Maps a numeric value to a specific instruction) TLOC: Targeted location When a sensor node receives an S-message, it determines if the instruction (INS) is intended for the node If the INS in the S-message is not intended for the node, the node stores the fields of S-message in a connection-tree (C-tree) SER
1. Source Discovery C-tree is a logical tree which represents possible connections through the node. Ctree maintains the node's neighbors that can participate in a routing back to sink DSP: Downlink Sensor Problem (indicates if the downlink sensor node is having problem in routing I-message) NS: Node Selected (indicates if the node is selected for routing) DLID: LID of downlink sensor node (store the LID value of neighbor node which will route the I-message back to sink) ULID: LID of uplink sensor node (U-message can be forwarded to sources from the sink or route reconnection is possible using N-message) A sensor node in an established route knows the LID values of both uplink and downlink nodes Initially, DLID and ULID values are not set and DSP and NS values are set to OFF Updated values of AE, NH and LID fields of S-message is broadcast to neighbors SER
1. Source Discovery If sensor node receive the same S-message from its neighbors, it dismisses it The sources store S-message in a task-tree (T-tree) T-tree has XDLID values sin...
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This note was uploaded on 08/25/2011 for the course EEL 5937 taught by Professor Staff during the Spring '08 term at University of Central Florida.
- Spring '08