IDLE NODE REAL TIME POWER SAVING MAC LAYER ORIENTED RADOM ROUTING IN WSN
Suresh M. Kumar, Mahesh D. S · 2012
Idle-listening and unproportional use of relay nodes is the biggest challenge for energyefficiency and longevity wireless sensor network (WSN) deployments. While existing Low power listening (LPL)-based MAC protocols employ the concept of micro sleep periods of 5ms to catch packets destined to the radio while alleviating idle-listening Next to idlelistening, an equally critical problem for the longevity of WSNs is the unproportional use of some nodes for relaying, which depletes the energy at these frequently used nodes.We propose a novel coordinated sleep/wakeup protocol SNOOZE NAP focus on avoiding the overhead of distributing complex, large sleep/wakeup scheduling information to the nodes. SNOOZE NAP piggybacks onto the relayed data packets the seed of the pseudo-random generator that encodes the scheduling information, and enables any recipient/snooper to calculate its sleep/wakeup schedule from this seed. In essence, SNOOZE NAP trades off doing extra computation in order to avoid expensive control packet transmissions. Through real implementation it shows that SNOOZE NAP eliminates the idle-listening problem and proper load balancing efficiently and achieves low-latency, and low-cost relaying of data packets for random routing protocols