Research Article
EEHRT: Energy Efficient Technique for Handling Redundant Traffic in Zone-Based Routing for Wireless Sensor Networks
Algorithm 1
Pseudocode for EEHRT routing strategy.
| Begin | |
| Set MsgSeqNo ← 0 | |
| Set SzoneID ← -1 | |
| Set SMsgType ← -1 | |
| For each node’s Schedule MSG | |
| Set MsgType ← 0 | |
| If Msg ← OwnMsg then | |
| Set MsgType ← 1 | |
| Waits for a guard time // After the guard time expires or when the channel becomes free, then | |
| Waits for a random listening time // Wait for time before the actual transmission | |
| BroadCast Msg | |
| Add zoneID, MsgSeqNo and MsgType into buffer | |
| End if | |
| If MsgType ← 1 or 2 and Node ← BS then | |
| Set RecvPCKT ← RecvPCKT + 1 | |
| Drop Msg | |
| Else | |
| If MsgScheduled == RcvMsgSeqNo then | |
| If Recv_zoneID < SzoneID and MsgType > = SMsgtype //SMsgType is the buffered value of MsgType | |
| and SzoneID is buffered/stored zoneID | |
| Set SeqNo ← MsgRcvSeqNo | |
| Set zoneID ← SzoneID | |
| Set MsgType ← 3 | |
| BroadCast Beacon//Broadcast Beacon message | |
| CANCEL Event | |
| Drop Msg | |
| Reset buffer to initial value | |
| Else | |
| If RcvPCKT_ zoneID < = ZoneID then | |
| Drop Msg | |
| Else | |
| Schedule Msg for relaying by adding its own zoneID | |
| Set MsgType ← 2 | |
| End if | |
| End if | |
| If zoneID==RecvZoneID and SeqNo==MsgRcvSeqNo and MsgType == 3 | |
| Kill timer | |
| Drop Msg | |
| Reset the buffer | |
| End if | |
| End while | |
| End |