A Radio Channel Model in Corridor Scenrio for Design and Application in Wireless Sensor Network

Author(s):  
Yang Jing ◽  
Chen Ming ◽  
Wang Long ◽  
Li Chong ◽  
Zhang Yuzhi ◽  
...  
2013 ◽  
Vol 811 ◽  
pp. 501-507
Author(s):  
Qin Xue

With the energy market demand increasing, coal mine safety production monitoring system based on wireless sensor network has been widely used. The traditional wireless sensor network synchronization method based on packet switching is very difficult to achieve synchronization accuracy and energy consumption at the same time. Paper presents a cooperative time synchronization method based on packet message exchange (CTS), Analysis of synchronous packet information interaction process, the introduction of cooperative relay will not change the synchronization precision. Synchronous grouping information for sending and receiving ends for receiving and forwarding to reduce the transmission power, reduce energy consumption through cooperative relay. Theoretical analysis and computer simulation show that in the condition of not reducing the synchronization precision, it can achieve the purpose of reducing energy consumption by introducing the cooperative relay in the horizon channel model can reach 4 times the energy efficiency.


2014 ◽  
Author(s):  
Francisco Falcone ◽  
Erik Aguirre ◽  
Peio Lopez Iturri ◽  
Leire Azpilicueta ◽  
José Javier Astrain ◽  
...  

Author(s):  
Andrey Makashov ◽  
Andrew Makhorin ◽  
Maxim Terentiev

A wireless sensor network (WSN) of a tree-like topology is considered, which performs measurements and transmits their results to the consumer. Under the interference influence, the WSN nodes transmitters low power makes the transmitted information vulnerable, which leads to significant data loss. To reduce the data loss during transmission, a noise-immune WSN model is proposed. Such a WSN, having detected a stable connection absence between a pair of nodes, transfers the interaction between these nodes to a radio channel free from interference influence. For this, the model, in addition to forming a network and transferring application data, provides for checking the communication availability based on the keep-alive mechanism and restoring the network with a possible channel change. A feature point of the proposed approach is the ability to restore network connectivity when exposed to interference of significant power and duration, which makes it impossible to exchange service messages on the channel selected for the interaction of nodes. To support the model, work algorithms and data structures have been developed, indicators have been formalized to assess an anti-jamming system work quality.


Author(s):  
Low Tang Jung ◽  
Azween Abdullah

This chapter presents the studies and analysis on the approaches, the concepts, and the ideas on data packet size optimization for data packets transmission in underwater wireless sensor network (UWSN) and terrestrial wireless sensor network (TWSN) communications. These studies are based on the related prior works accomplished by the UWSN and TWSN research communities. It should be mentioned here that the bulk of the studies and analysis would be on the data packet size optimization techniques or approaches rather than on the communication channel modeling, but the channel model is deemed essential to support the optimization approaches. The various optimization solutions proposed in the prior arts are dealt with in depth to explore their feasibilities to accommodate the data packet size optimization algorithm proposed by the various researchers. This chapter starts off with the studies and analysis on prior arts found in UWSN and then moves on to the similar works found elsewhere in the TWSN communications counterparts. A comparison on some important issues related to data packet size optimization approaches used in UWSN and TWSN communications are summarized in a table at the end of this chapter. The findings in this chapter may be helpful to readers who are interested in the R&D of data packet size optimization techniques with the intention to formulate new data packet size optimization framework or algorithms.


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