a reliable transmission protocol for zigbee-based wireless patient monitoring ieee journals volume:...
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A Reliable Transmission A Reliable Transmission Protocol for ZigBee-Protocol for ZigBee-Based Wireless Patient Based Wireless Patient MonitoringMonitoring
IEEEIEEE JOURNALS JOURNALSVolume: 16 , Issue:1 Volume: 16 , Issue:1
Shyr-Kuen Chen, Tsair Kao, Chia-Tai Chan, Shyr-Kuen Chen, Tsair Kao, Chia-Tai Chan, Chih-Ning Huang, Chih-Yen Chiang, Chin-Yu Lai, Chih-Ning Huang, Chih-Yen Chiang, Chin-Yu Lai,
Tse-Hua Tung, and Pi-Chung WangTse-Hua Tung, and Pi-Chung Wang
Presenter: Yu-Ming Chen Adviser: Hung-Chi Yang
OutlineOutline
IntroductionIntroductionRelated WorkRelated WorkReliable Transmission ProtocolReliable Transmission ProtocolFall Monitoring systemFall Monitoring systemSimulation and implementation ResultsSimulation and implementation ResultsConclusionConclusion
INTRODUCTIONINTRODUCTION
The global elderly population is fast The global elderly population is fast growing and will outnumber the population growing and will outnumber the population of children in near future. of children in near future.
The changes brought about by the aging The changes brought about by the aging society include an increasing demand for society include an increasing demand for caretaking; thus, patient monitoring caretaking; thus, patient monitoring systems are gaining their importance in systems are gaining their importance in reducing the need for human resources.reducing the need for human resources.
INTRODUCTIONINTRODUCTION
In this paper, we present a reliable In this paper, we present a reliable transmission protocol based on anycast transmission protocol based on anycast routing for wireless patient monitoring.routing for wireless patient monitoring.
INTRODUCTIONINTRODUCTION
In this paper, we present a reliable In this paper, we present a reliable protocol of packet forwarding that protocol of packet forwarding that transmits emergency messages with vital transmits emergency messages with vital signs on a multihop ZigBee network.signs on a multihop ZigBee network.
INTRODUCTIONINTRODUCTION
We deploy multiple data sinks in a ZigBee We deploy multiple data sinks in a ZigBee network.network.
Our protocol uses anycast to find the Our protocol uses anycast to find the nearest available data sink.nearest available data sink.
When the path to the original data sink When the path to the original data sink fails, our protocol automatically selects fails, our protocol automatically selects another data sink as destination. another data sink as destination.
INTRODUCTIONINTRODUCTION
As compared with multicast/broadcast approaches, our protocol significantly reduces the traffic overhead while maintaining the reliability at the same level.
INTRODUCTIONINTRODUCTION
We implement a ZigBee device for fall We implement a ZigBee device for fall monitoring, which integrates fall detection monitoring, which integrates fall detection indoor positioning, and ECG monitoring.indoor positioning, and ECG monitoring.
When the triaxial accelerometer of our When the triaxial accelerometer of our device detects a fall, the current position of device detects a fall, the current position of the patient is generated and transmitted to the patient is generated and transmitted to a data sink through a ZigBee network. a data sink through a ZigBee network.
INTRODUCTIONINTRODUCTION
In order to clarify the situation of the fallen In order to clarify the situation of the fallen patient, 4-s ECG signals are transmitted patient, 4-s ECG signals are transmitted along with the emergency message.along with the emergency message.
RELATED WORKRELATED WORK
A Communication ModesA Communication Modes
Data transmission can be categorized into Data transmission can be categorized into four modes, namely unicast, multicast, four modes, namely unicast, multicast, broadcast, and anycast.broadcast, and anycast.
RELATED WORKRELATED WORK
B. Wireless Patient Monitoring SystemB. Wireless Patient Monitoring System
This framework uses four routing This framework uses four routing schemes(multicast, reliable multicast, schemes(multicast, reliable multicast, broadcast, and reliable broadcast)broadcast, and reliable broadcast)
RELATED WORKRELATED WORK
B. Wireless Patient Monitoring SystemB. Wireless Patient Monitoring System
Using IEEE 802.15.4 standard for ECG, Using IEEE 802.15.4 standard for ECG, the maximum payload size only allow up the maximum payload size only allow up to 118 samples per frame bringing the to 118 samples per frame bringing the accumulation delay to 236ms. accumulation delay to 236ms.
802.15.4802.15.4
RELATED WORKRELATED WORK
B. Wireless Patient Monitoring SystemB. Wireless Patient Monitoring System
The minimum data sampling rate of 1 The minimum data sampling rate of 1 sample per frame result in an accumulated sample per frame result in an accumulated delay of 2 ms.delay of 2 ms.
RELATED WORKRELATED WORK
B. Wireless Patient Monitoring SystemB. Wireless Patient Monitoring System
Previous schemes tend to use broadcast Previous schemes tend to use broadcast or multicast schemes to achieve message or multicast schemes to achieve message delivery in a multihop wireless network.delivery in a multihop wireless network.
RELATED WORKRELATED WORK B. Wireless Patient Monitoring SystemB. Wireless Patient Monitoring System
Although the number of transmission hops and Although the number of transmission hops and traffic overhead can be reduced by using excess traffic overhead can be reduced by using excess transmission power, the collision domain is also transmission power, the collision domain is also enlarged to severely degrade the transmission enlarged to severely degrade the transmission efficiency of MAC layer.efficiency of MAC layer.
RELATED WORKRELATED WORK
B. Wireless Patient Monitoring SystemB. Wireless Patient Monitoring System
We combine anycast with a reliable transmission We combine anycast with a reliable transmission mechanism to improve the efficiency of message mechanism to improve the efficiency of message transmission in this paper. transmission in this paper.
Since our scheme does not rely on in creasing Since our scheme does not rely on in creasing transmission power, the power efficiency of our transmission power, the power efficiency of our scheme can be improved as well.scheme can be improved as well.
RELIABLE TRANSMISSION RELIABLE TRANSMISSION PROTOCOLPROTOCOL
Sensor NodeSensor Node
Router NodeRouter Node
Data receiverData receiver
RELIABLE TRANSMISSION RELIABLE TRANSMISSION PROTOCOLPROTOCOL
A. Sensor NodeA. Sensor Node
RELIABLE TRANSMISSION RELIABLE TRANSMISSION PROTOCOLPROTOCOL
B. Router NodeB. Router Node
RELIABLE TRANSMISSION RELIABLE TRANSMISSION PROTOCOLPROTOCOL
C. Data ReceiverC. Data Receiver
FALL MONITORING SYSTEMFALL MONITORING SYSTEM
SVM: SSVM: Sum Vector Magnitude of accelerationum Vector Magnitude of acceleration
SIMULATION AND SIMULATION AND IMPLEMENTATION RESULTSIMPLEMENTATION RESULTS
A. Simulation ResultsA. Simulation Results
SIMULATION AND SIMULATION AND IMPLEMENTATION RESULTSIMPLEMENTATION RESULTS
B. Implementation ResultsB. Implementation Results
CONCLUSIONCONCLUSION
This paper presents a reliable anycast routing This paper presents a reliable anycast routing protocol for ZigBee-based wireless patient protocol for ZigBee-based wireless patient monitoring.monitoring.
A broken path can be recovered in a short A broken path can be recovered in a short latency. latency.
We demonstrate that our scheme can improve We demonstrate that our scheme can improve the feasibility of wireless patient monitoring the feasibility of wireless patient monitoring systems.systems.
