2010
DOI: 10.1007/978-3-642-11528-8_8
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Abstract: Abstract. Here, we present the collision probability of the IEEE 802.15.4 slotted Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) mechanism over a real-time wireless sensor network (RT-WSN), also called a synchronous network system. The "backoff," the random delay of CSMA/CA, can be used to create a probability model and to determine the average packet delay over RT-WSN. The proposed theoretical analysis model was nearly consistent with the simulation and with experimental results. This suggests th… Show more

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Cited by 7 publications
(6 citation statements)
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References 10 publications
(9 reference statements)
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“…Zigbee uses IEEE 802.15.4 standard radio as the hardware and carrier sense multiple access/collision avoidance (CSMA/CA) as the channel access protocol. Recent literature demonstrates that packet collision rate of CSMA/CA is high in a real-time WSN [34]. Additionally, retransmissions due to collisions consume significant power and result in unpredictable data reception delay.…”
Section: A Wireless Communication Schemementioning
confidence: 99%
“…Zigbee uses IEEE 802.15.4 standard radio as the hardware and carrier sense multiple access/collision avoidance (CSMA/CA) as the channel access protocol. Recent literature demonstrates that packet collision rate of CSMA/CA is high in a real-time WSN [34]. Additionally, retransmissions due to collisions consume significant power and result in unpredictable data reception delay.…”
Section: A Wireless Communication Schemementioning
confidence: 99%
“…Different firmware versions were used with the PAN coordinator, router, and device, depending on the application. The design of the WSN hardware platform was described in detail previously [21,22]. (5) Sensor: two sensors, a thermometer and a sphygmomanometer, were used to measure three vital signs, temperature, heart rate, and blood pressure.…”
Section: A Wireless Sensor Network Layout In a Nursing Homementioning
confidence: 99%
“…Only one gateway and a PAN coordinator were needed on each floor. The gateway and the PAN coordinator are shown in Figure 3(a [21,22].…”
Section: A Wireless Sensor Network Layout In a Nursing Homementioning
confidence: 99%
“…Gribaudo et al [7] built a detailed model to obtain the delivery delay distribution of events sent by concurrently contending sensors toward a central controller and carried out a transient analysis for delay performance. Huang et al [8] proposed an effective mathematical analysis methodology to be applied to real-time WSN under the IEEE 802.15.4 slotted Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) mechanism. The results suggested the slotted CSMA/CA mechanism cannot be applied effectively to event-driven WSNs and will waste a great deal of bandwidth as the event collision rate will increase up largely.…”
Section: Related Workmentioning
confidence: 99%