2010 · 31 citations · 10 references
ComputingInformation TechnologyComputer NetworksHealth Information SecurityWireless CommunicationsSensor NetworksWireless Communication ProtocolsWireless NetworksWireless Sensor NetworksBody Sensor NetworksIeee 802.15.4Medium Access ControlMedium Access Control ProtocolsPower ConsumptionReal-time Data TransmissionWireless Sensor Network ProtocolsZigbee
Recent advances in Wireless Sensor Network (WSN) have facilitated the realization of pervasive health monitoring for both homecare and hospital environments. IEEE 802.15.4/ZigBee sensor network support small power consumption and node expansion compared to other network standards for WSN. Body sensor networks (BSN) require a large number of sensors for sensing the medical information from human body, and low power consumption for monitoring a patient's status for long time. Unfortunately, ZigBee has limited bandwidth and hard to support real time data transmission because of the adoption of CSMA-CA as its medium access control (MAC) protocol. Depending on the varying traffic loads, there are different back-off times for packet transmission. This affects the data loss rate and latency for data packets generated by a network node. Proper configuration is important in the successful operation of a ZigBee network. This paper analyzes the effect of different back-off parameters on the performance of beaconless operation of ZegBee MAC protocol.
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CodeBlue: An Ad Hoc Sensor Network Infrastructure for Emergency Medical Care
David J. Malan, Thaddeus Fulford-Jones, Matt Welsh et al. · Digital Access to Scholarship at Harvard (DASH) (Harvard University) · 2004 · 799 citations · Full text
Computing, Emergency Medical Services, Emergency Medicine +17
Throughput and energy consumption analysis of IEEE 802.15.4 slotted CSMA/CA
T.R. Park, Tae Hyun Kim, J.Y. Choi et al. · Electronics Letters · 2005 · 263 citations
Engineering, Computer Engineering, Electrical Engineering +17