scholarly journals CLUSTER BASED TIME DIVISION MULTIPLE ACCESS SCHEDULING SCHEME FOR ZIGBEE WIRELESS SENSOR NETWORKS

2012 ◽  
Vol 8 (12) ◽  
pp. 1979-1986
Author(s):  
Meenakshi
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Multiple Access ◽  
Time Division Multiple Access ◽  
Wireless Sensor ◽  
Scheduling Scheme ◽  
Time Division

scholarly journals Multi-channel time division multiple access timeslot scheduling with link recovery for multi-hop wireless sensor networks

2017 ◽  
Vol 13 (8) ◽  
pp. 155014771772631 ◽  
Author(s):  
Junhee Lee ◽  
Wun-Cheol Jeong ◽  
Byeong-Cheol Choi
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Multiple Access ◽  
Wireless Sensor ◽  
End To End Delay ◽  
Recovery Scheme ◽  
Communication Links ◽  
Local Recovery ◽  
End To End ◽  
Time Division

In this article, we propose a time division multiple access scheduling algorithm for end-to-end on-time packet delivery in multi-hop wireless sensor networks. Our proposed algorithm establishes a new communication path to substitute the old path including the link failed and schedules communication links on the new path by allocating timeslots satisfying end-to-end delay bound. Max–min optimization is employed to maximize the number of dedicated timeslots to establish the substitute path in the event of the next link failure. We evaluate the performance of the proposed algorithm using QualNet network simulator and compare it with the performance of the algorithm that minimizes the end-to-end delay. Our numerical results show that the path survival ratio of the proposed algorithm is approximately two times higher when large number of communication links fails. In addition, we apply the global recovery and local recovery schemes to observe the increase in the overhead message exchanges. Compared to the global recovery scheme, local recovery scheme requires six times less control messages to establish the substitute path when a small number of link failures occur, whereas more than 90% communication paths survive.

scholarly journals An energy-balanced multi-sensor scheduling scheme for collaborative target tracking in wireless sensor networks

2017 ◽  
Vol 13 (3) ◽  
pp. 155014771769896 ◽  
Author(s):  
Pengcheng Fu ◽  
Hongying Tang ◽  
Yongbo Cheng ◽  
Baoqing Li ◽  
Hanwang Qian ◽  
...  
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Target Tracking ◽  
Wireless Sensor ◽  
Sensor Scheduling ◽  
Scheduling Scheme

scholarly journals Energy-Efficient and Fast MAC Protocol in UAV-Aided Wireless Sensor Networks for Time-Critical Applications

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2635 ◽  
Author(s):  
Sabitri Poudel ◽  
Sangman Moh
Keyword(s):  
Wireless Sensor Networks ◽  
Energy Consumption ◽  
Sensor Networks ◽  
Energy Efficient ◽  
Multiple Access ◽  
Mac Protocol ◽  
Mac Protocols ◽  
Wireless Sensor ◽  
Sensing Applications ◽  
Time Critical

Unmanned aerial vehicle (UAV)-aided wireless sensor networks (UWSNs) can be effectively used for time-critical sensing applications. UAVs can be used to collect the sensed data from sensors and transfer them to a base station. The real-time transfer of data is highly desired in the time-critical applications. However, the medium access control (MAC) protocols designed for UWSNs so far are primarily focused on the efficient use of UAVs to collect data in the sensing areas. In this paper, we propose an energy-efficient and fast MAC (EF-MAC) protocol in UWSNs for time-critical sensing applications. EF-MAC adopts carrier sense multiple access (CSMA) for the registration of sensor nodes with a UAV and time division multiple access (TDMA) with variable slot time for the transmission of collected data. The UAV is equipped with two transceivers to minimize both energy consumption and delay in air-to-ground communication. The energy consumption and delay are formally analyzed and the performance of EF-MAC is evaluated via extensive simulation. The simulation results show that the proposed EF-MAC outperforms the conventional MAC protocols in terms of energy efficiency and communication delay.

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