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Energy efficiency is one of the most important issues of wireless sensor networks (WSN). The routing technology of the network layer is critical in reduce the energy consumption in WSN. Nevertheless, the reliability and data aggression also should be analyzed. To solve these issues, an energy effective routing protocol based on low-energy adaptive clustering hierarchy algorithm is proposed to meet...
A good data transmission protocol should balance energy consumption, packets collision and some other factors well. The traditional layer protocol can't sufficiently meet the complex requirement of data transmission, so a cross-layer transmission protocol that is tree based power controlled (TBPC) is proposed. In TBPC, transmission power of regarded as a key factor, and it can be designed a series...
As the most appropriate data processing method of ambient intelligence, wireless sensor network has a broad space of application. One of the most important applications of wireless sensor network is fire rescuing in building, and there are many special technology requirement for this application. In order to resolve nodes uneven distribution and exactly estimation the location and intensity of fire,...
Wireless communication channel and limited communication resource lead MAC protocol to be one of pivotal issue in wireless sensor networks. Focus on energy efficiency and avoidance of packets collision, a power controlled MAC that is named cross-layer power alternative MAC (CLPA-MAC) is proposed. In CLPA-MAC, nodes send packets with tow different transmission power levels instead of one fixed value...
In wireless sensor networks (WSNs), a challenging problem is how to advance network QoS. Energy-efficiency, network communication traffic and failure-tolerance, these important factors of QoS are closely related with the applied performance of WSNs. Hence a QoS-aware routing protocol called directed alternative spanning tree (DAST) is proposed to balance the above three factors of QoS. A directed...
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