scholarly journals CL-MAC: Cross-layer MAC Protocol for Delay Sensitive Wireless Sensor Network Applications

10.5772/7514 ◽  
2010 ◽  
Author(s):  
Kechar Bouabdellah ◽  
Sekhri Larbi
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Mac Protocol ◽  
Wireless Sensor ◽  
Cross Layer ◽  
Network Applications ◽  
Delay Sensitive

Self-Correcting Time Synchronization Based on Cross Layer for Wireless Sensor Network

2012 ◽  
Vol 220-223 ◽  
pp. 1871-1876
Author(s):  
Feng Mei Liang ◽  
Bin Liu
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Time Synchronization ◽  
Mac Protocol ◽  
Physical Layer ◽  
Wireless Sensor ◽  
Cross Layer ◽  
Synchronization Mechanism ◽  
Synchronization Algorithm ◽  
Crystal Oscillation

Due to energy restrictions, node distribution density and hardware computing power etc., the traditional time synchronization mechanism is not suitable for wireless sensor network. The paper discussed the main reason that caused asynchronization and proposed an improved time synchronization algorithm based on cross layer optimization for wireless sensor network. Considering the stability of crystal oscillation and the linearity of crystal deviation in the physical layer, the improved time synchronization mechanism implemented a self-correction by the cross-layer MAC protocol. Estimating the crystal oscillation drift, the crystal deviation had been self-corrected just by a few times data broadcast. The experiment on the MCU Si1000 physical layer platform has demonstrated the practicability of the algorithm. The synchronization algorithm is able to keep a stable network operation in the way of extending the synchronization period and reducing the synchronization cost. The synchronization mechanism is applicable to the active acquisition network, especially the realtime one.

scholarly journals Energy Efficient MAC Protocol for Heterogeneous Wireless Sensor Network using Cross-Layer Design

2019 ◽  
Vol 8 (4) ◽  
pp. 1019-1026
Keyword(s):  
Energy Consumption ◽  
Wireless Sensor Network ◽  
Sensor Network ◽  
Energy Efficient ◽  
Mac Protocol ◽  
Wireless Sensor ◽  
Sleep Mode ◽  
Cross Layer ◽  
Cross Layer Design ◽  
Heterogeneous Wireless Sensor Network

Over the last decade, Wireless Sensor Network (WSN) has gained considerable attention in various real-time applications. Since WSN works with battery operated nodes, utilization and optimization of node energy is one the primary challenge. For effectively handling and controlling the energy consumption problem in WSN, cross-layer optimization is one of the important methods. For a researcher working in the domain of WSN, energy constraint is a huge challenge to deal with. MAC layer is one of the major source of energy consumption so, an innovative energy efficient MAC protocol using a cross-layer approach in the heterogeneous wireless sensor network is proposed. In this protocol, first, packet retransmission by reducing packet loss is addressed by considering buffer space, channel state and remaining energy. Second, the synchronization scheme for a global schedule is implemented by deliberating adaptive listening using the length of the transmission queue. Finally, sleep time issue is worked out to reduce energy consumption. In this scenario, the nodes will be in sleep mode unless it has some packets to send or receive. The proposed protocol is implemented in Network Simulation (NS2). The simulation results show that the heterogeneous wireless network performs better in terms of energy consumption, packet data rate and energy buffer state while implementing through the proposed protocol.

Sign in / Sign up

Export Citation Format

Share Document