[Retracted] Enhancing Energy Efficiency of Wireless Sensor Network through the Design of Energy Efficient Routing Protocol

Algorithm 1

Gateway selection algorithm.

Step A:

Wait for sink advertisement message

IF (gateway Election → Gateway)

  Message advertise

  Wait for members’ joining request till T1

  IF (number of joining members 0)

    Go to Step C

  Form TDMA schedule and announce to all members

Step B:

  Wait for data as per TDMA schedule

  Data received

  Process data: aggregation

  Data transmit to sink

  While (Gateway Energy )

    Repeat from Step B

  Repeat from Step A

ELSE (gateway Election → Normal node)

Step C:

  Wait for gateway advertisement message

  Send joining request

  Wait for TDMA schedule to receive

Step D:

  Wait for allotted slot

  IF Energy available to transmit data

    Send data

    While (Gateway Energy )

          Listen Broadcast from sink to gateway

      Repeat from Step D

    Repeat from Step A

  ELSE

    Node died

    END IF