| Cluster Construction Process for sensor |
| 1: At the beginning of the Round |
| 2: Ifthen |
| 3: Broadcast a State_Message within |
| 4: End if |
| 5: On receiving the State_Message from its neighbor |
| 6: add to its neighbor set |
| 7: calculate its local energy state and local node density |
| 8: infer its chance and size base on the fuzzy logic system |
| 9: Broadcast a Competition_Message () |
| 10: While the cluster head election time has not expired, do |
| 11: ifthen |
| 12: broadcast a Winner_Message () and then EXIT |
| 13: end if |
| 14: on receiving a Winner _Message from sensor |
| 15: ifthen |
| 16: broadcast a Quit _Message () and then EXIT |
| 17: end if |
| 18: on receiving a Quit_Message from sensor |
| 19: ifthen |
| 20: remove sensor from |
| 21: end if |
| 22: end while |
| 23: Ifthen |
| 24: On receiving the Join_Message from sensor |
| 25: if the current cluster size less than |
| 26: Accept the sensor , sending back the Accept_Message |
| 27: else Sending back the Reject_Message |
| 28: end if |
| 29: Else |
| 30: Sending the Join_Message to the nearest CH |
| 31: On receiving the Accept_Message, finish |
| 32: On receiving the Reject_Message, delete the CH and repeat 30 |
| 33: if all the neighbor CHs refuse to accept sensor |
| 34: |
| 35: end if |
| 36: End if |
