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Elementary MAC Scheme Based on Slotted ALOHA for Wireless Passive Sensor Networks
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 Title & Authors
Elementary MAC Scheme Based on Slotted ALOHA for Wireless Passive Sensor Networks
Choi, Cheon Won; Seo, Heewon;
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 Abstract
A wireless passive sensor network is a network which, by letting RF sources supply energy to sensor nodes, is - at least theoretically - able to live an eternal life without batteries. Due to the technological immaturity, however, a wireless passive sensor network still has many difficulties; energy scarcity, non-simultaneity of energy reception and data transmission and inefficiency in data transmission occurring at sensor nodes. Considering such practical constraints, in this paper, we propose an elementary MAC scheme supporting many sensor nodes to deliver packets to a sink node. Based on a time structure in which a charging interval for charging capacitors by using received and an acting interval for communicating with a sink node are alternately repeated, the proposed MAC scheme delivers packets to a sink node according to slotted ALOHA. In general, a contention-type scheme tends to exhibit relatively low throughput. Thus, we multilaterally evaluate the throughput performance achieved by the proposed MAC scheme using a simulation method. Simulation results show that the network-wide throughput performance can be enhanced by properly setting the length of acting interval.
 Keywords
Wireless passive sensor network;MAC;slotted ALOHA;Charging and acting intervals;Throughput;
 Language
Korean
 Cited by
1.
무선 수동형 센서 망을 위한 경합형 MAC 방식의 최적 설계,최천원;서희원;

전자공학회논문지, 2016. vol.53. 6, pp.29-36 crossref(new window)
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