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This paper introduced the characteristics and applications of wireless sensor networks briefly. With the rapid development of wireless sensor network(WSN) technology, the characteristic of energy limit in WSN has become the utmost concern among people nowadays. According to how to use the limited energy effectively, this paper discuss some typical energy-saving protocols in the MAC layer and in the...
Nowadays, smart spaces occupy an essential part of ubiquitous computing environment. The spaces integrated with wireless sensors networks, actuators and context-aware services become part of our daily life. Smart spaces are equipped with a large number of wireless sensors that aim to collect large quantities of context information, during the process, there exists a large amount of collisions and...
In this paper, we propose a novel local framing pre-schedule scheme to improve energy saving in CSMA/TDMA hybrid MAC layer of wireless sensor network. This MAC combines CSMA and TDMA functionalities together, while obviates their shortcomings. Usually, in a hybrid CSMA/TDMA MAC such as ZMAC, all the receivers have to perform low power listening all the time to wait for in-coming data. Although low...
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