... Communications and Networking Patient Patient Body sensor Body sensor Patient Body sensor Care unit BAN coordinator Patient Patient d < 8m Body sensor Body sensor Figure 1: A star -based BSN in a ... wearing several body sensors (see Figure 1) Communication from body sensors to BAN coordinator (uplink), from BAN coordinator to body sensors (downlink), or even from body sensor to body sensor (ad ... [6, 7] The Body Sensor Network MAC (BSN-MAC) is based on 802.15.4 MAC supporting both star and peer-to-peer network topologies The authors in [6, 7] concentrate also on a 1-hop star -based topology,...
Ngày tải lên: 21/06/2014, 11:20
... signals have been touted as the most appropriate biometrics for a BSN, there is of course a wide range of sensors and devices that not have access to the body s cardiovascular networks Therefore, ... Hatzinakos, “Resource allocation strategies for secure and efficient communications in biometrics -based body sensor networks,” in Proceedings of the Biometrics Symposium (BSYM ’07), Baltimore, ... USA, 4th edition, 2001 S.-D Bao, Y.-T Zhang, and L.-F Shen, Physiological signal based entity authentication for body area sensor networks and mobile healthcare systems,” in Proceedings of the...
Ngày tải lên: 22/06/2014, 00:20
UML based design framework for body sensor network applications by sunzhenxin final
... UML -based Co-design Framework for Body Sensor Network Applications Sun Zhenxin (B Computing(Hons), National University of Singapore, Singapore) A THESIS SUBMITTED FOR THE DEGREE OF ... CONTENTS Chapter Introduction 10 1.1 Body Sensor Network 11 1.2 Conventional Design Methods 12 1.3 Challenges of Body Sensor Network Application Design 15 1.4 Embedded ... ABSTRACT A body sensor network (BSN) refers to a set of communicating, wearable computing devices They are gaining popularity especially in bio-monitoring applications In body sensor networks,...
Ngày tải lên: 09/09/2015, 18:57
Báo cáo hóa học: "Research Article Adaptive Reliable Routing Based on Cluster Hierarchy for Wireless Multimedia Sensor Network" docx
... and B Nath, “ReinforM: reliable information forwardingusing multiple paths in sensor networks,” in Proceedings of the 28th Annual IEEE International Conference on Local Computer Networks, pp 406–415, ... desired reliability ReInforM uses the concept of dynamic packet state in the context of sensor networks to control the number of paths required for the desired reliability based on local knowledge ... routing protocol for real-time traffic generated by a wireless sensor network consisting of image sensors is proposed by Akkaya and Younis in [11] This approach finds multiple network routes by...
Ngày tải lên: 21/06/2014, 17:20
DESIGN AND IMPLEMENTATION OF WEB-BASED DATA AND NETWORK MANAGEMENT SYSTEM FOR HETEROGENEOUS WIRELESS SENSOR NETWORKS
... 3 2.1 Current Sensor Network Platforms 3 2.1.1 MoteWorks Platform 3 2.1.2 Particle Platform 4 2.1.3 μNode Platform 4 2.2 Sensor Network Middleware ... engineering innovations New WSNbased technologies, such as body sensor networks in medical and health care and environmental monitoring sensor networks, are emerging Sensor networks are quickly becoming ... COMn stands for a Wireless Sensor Network, the purpose of this Mode is to quickly cover all possible motes in these four Wireless Sensor Networks if user can select all Wireless Sensor Networks...
Ngày tải lên: 24/08/2014, 10:50
Sprite: A Simple, Cheat-Proof, Credit-Based System for Mobile Ad-Hoc Networks potx
... vs network battery resource We first evaluate the message success rate under different configurations of network resource Figure shows the message success rates for two ad hoc networks: one network ... nodes to forge receipts, if such actions can maximize its welfare This is the security perspective of our system Second, a node should receive enough credit for forwarding a message for another ... virtual money) to the network because other nodes incur a cost to forward the messages On the other hand, when a node forwards others’ messages, it should gain credit and therefore be able to send...
Ngày tải lên: 15/03/2014, 04:20
Báo cáo hóa học: " Research Article Secure Precise Clock Synchronization for Interconnected Body Area Networks" doc
... Security of Ad Hoc and Sensor Networks (SASN ’05), pp 107– 116, November 2005 [3] H Song, S Zhu, and G Cao, “Attack-resilient time synchronization for wireless sensor networks,” in Proceedings ... Srivastava, “Estimating clock uncertainty for efficient dutycycling in sensor networks,” in Proceedings of the 3rd international Conference on Embedded Networked Sensor Systems, pp 130–141, 2005 [8] ... distribution for dynamic conferences,” Information and Computation, vol 146, no 1, pp 1–23, 1998 [19] D S´ nchez and H Baldus, “A deterministic pairwise key a pre-distribution scheme for mobile sensor networks,”...
Ngày tải lên: 21/06/2014, 05:20
Báo cáo hóa học: " Research Article A Fast Network Configuration Algorithm for TDMA Wireless Sensor Networks" pot
... link protocol for sensor networks,” Ad Hoc Networks, vol 6, no 8, pp 1201–1220, 2008 [8] K Jamieson, H Balakrishnan, and Y C Tay, “Sift: a MAC protocol for event-driven wireless sensor networks,” ... wireless sensor networks,” Computer Networks, vol 53, no 5, pp 569–582, 2009 [6] D Shu, A K Saha, and D B Johnson, “RMAC: a routingenhanced duty-cycle MAC protocol for wireless sensor networks,” ... time for the network creation increases, but the growth rate is rather slow For instance, based on the data shown in Figure when the network radius increases from R to 6R, the creation time for...
Ngày tải lên: 21/06/2014, 11:20
báo cáo hóa học:" A power efficient MAC protocol for wireless body area networks" pot
... for physiological signal monitoring and health consulting Int J Signal Process Pattern Recogn 1, 47–54 (2008) [17] C Ding, X Wu, Z Lv, Design and implementation of the Zigbee -based body sensor network ... receivers for wireless sensor networks Ph.D Dissertation, EECS Department, University of California, Berkeley, May 2008 [7] W Ye, J Heidemann, D Estrin, An energy-efficient MAC protocol for wireless sensor ... Wake-up receivers for wireless sensor networks: benefits and challenges IEEE Wirel Commun 16(4), 88–96 (2009) [15] P Le-Huy, S Roy, Low-power 2.4 GHz wake-up radio for wireless sensor networks, in...
Ngày tải lên: 21/06/2014, 17:20
Báo cáo hóa học: "Research Article Development of a Testbed for Wireless Underground Sensor Networks" ppt
... physical structure of the hole for multiple experiments However, to perform the experiments, the sensor should also be covered with soil Therefore, the reuse of a hole for multiple experiments is ... measurements Therefore, before using the sensor nodes for the WUSN experiments, they are tested in typical WSN scenarios, using over-the-air tests, in a process called qualification test The reason for this ... matter 6.4 2.6 1.5 Texture Loam Clay Loam Clay Loam use a capacitance -based sensor, ECH2 O EC-5 [11] sensor [3, 12, 13], for water content measurements The WC measurements must be collected frequently...
Ngày tải lên: 21/06/2014, 23:20
Báo cáo hóa học: " Research Article An Efficient Multibit Aggregation Scheme for Multihop Wireless Sensor Networks" pptx
... 0.8 0.85 0.9 0.95 Precision of sensors PF for CV-FT PD for WAS PF for WAS PD for Counting PF for Counting PD for 2-CV PF for 2-CV PD for CV-VT PF for CV-VT PD for CV-FT Figure 8: Numerical plots ... decision made by every sensor node practically available However, as will be seen latter, for implementing q-CV for tree structure, we can compute the performance indices for every node’s decision, ... Computation of performance indices i Here we show how the performance indices Pmn , for any node Si , can be computed when the performance indices, j i pmn of its observation and the performance indices...
Ngày tải lên: 21/06/2014, 23:20
Báo cáo hóa học: "Research Article On PHY and MAC Performance in Body Sensor Networks" pptx
... performance In -Body RF Communication The requirements of RF communication for on -body and in -body sensor networks are different due to their corresponding channel characteristics In an on -body sensor ... provides reliable solution for an on -body sensor network but it has several limitations for an in -body sensor network The main reason is that the path loss inside the human body due to tissue heating ... position [15] In an in -body sensor network, the signals propagate inside the human body where the electrical properties of a body affect the signal propagation All existing formulas to design free-air...
Ngày tải lên: 21/06/2014, 23:20
Báo cáo hóa học: " Research Article Scalable Coverage Maintenance for Dense Wireless Sensor Networks" doc
... simulated both homogeneous and heterogeneous sensor networks For homogeneous networks, SR is fixed at 10 m For heterogeneous networks, a sensor s SR is uniformly chosen from three possible values: m, ... large sensor networks,” Ad Hoc & Sensor Wireless Networks, vol 1, no 1-2, pp 89–123, 2005 J Lu and T Suda, “Coverage-aware self-coordination in sensor networks,” Tech Rep 04-19, School of Information ... configuration for energy conservation in sensor networks,” ACM Transactions on Sensor Networks, vol 1, no 1, pp 36–72, 2005 A Gallais, J Carle, D Simplot-Ryl, and I Stojmenovi´ , “Localc ized sensor...
Ngày tải lên: 22/06/2014, 19:20
Báo cáo hóa học: "Research Article Mobile Agent-Based Directed Diffusion in Wireless Sensor Networks" doc
... have been proposed for efficient data dissemination in sensor networks In [1], the authors proposed mobile agent -based distributed sensor network (MADSN) for cluster -based sensor networks MADSN has ... provides a sensor network with application context by attribute -based naming Attribute -based naming specifies which sensors are responsible for responding queries, and how intermediate sensors perform ... have been proposed for efficient data dissemination in sensor networks [1, 6–12] In a typical client/server -based sensor network, the occurrence of certain events will alert sensors to collect...
Ngày tải lên: 22/06/2014, 23:20
Design implementation of low power MAC protocol for wireless body area network
... commercial products The network simulator used in this dissertation is Castalia, an event-driven simulator for wireless sensor networks, body area networks and general networks of low-power embedded ... (b) Top view of the human body with sensors while standing still (c) Top view of the human body with sensors while in motion (a) Sensor placement Figure 1.2: Example of body shadowing In WBAN, ... Implant to Body Surface 402-405 MHz S3 Implant to Implant to External 402-405 MHz S4 Body Surface to Body Surface (LOS*) 50, 400, 900 MHz S5 Body Surface to Body Surface (NLOS**) S6 Body Surface...
Ngày tải lên: 09/09/2015, 08:16
Energy aware RF transceiver for wireless body area networks (WBAN
... output for the two states of the OOK received signal with zero quench signal (SW2 open and SW1 closed) 75 Fig 5-4 Colpitts SRO output for the OOK RF input signal with rectangular quench signal ... Transceiver 104 xi LIST OF ABBREVIATIONS WSN Wireless Sensor Networks WBAN Wireless Body Area Networks WPAN Wireless Personal Area Network SN Sensor Node PS Personal Server OOK ON OFF Keying FSK ... Background Wireless Body Area Networks (WBAN) belongs to the family of Wireless Sensor Networks (WSN) with specific attention to health care for monitoring the parameters in the body WBAN consist...
Ngày tải lên: 09/09/2015, 18:49
Machine learning based congestion control in wireless sensor networks
... overview of wireless sensor networks The main objectives, contributions and the thesis structure are then summarized 1.1 Background on wireless sensor networks A Wireless Sensor Network (WSN) [1] ... in Wireless Sensor Networks”, accepted for 2006 IEEE International Conference on Communication Systems (ICCS), Singapore, 30 Oct - Nov 2006 vii List of Figures 2.1 Wireless sensor network with ... 92 iv Summary The performance of wireless sensor networks strongly depends on the underlying transport protocol The traffic characteristics in sensor networks are known to cause frequent...
Ngày tải lên: 10/11/2015, 11:29
Impulse radio intrabody communication system for wireless body area networks
... necessity for a better quality of life A new emerging paradigm is the use of networked sensors to monitor health, in a framework known as healthcare sensor networks [2] These healthcare sensor networks ... oximetry (SpO2) A network should be built for the communication path between those sensors Fig.1.1 shows an example sensor network of biomedical monitoring applications [4] The network of sensors is ... communication between sensors is wireless A new wireless sensor network should be created for providing higher data resolution and lower power consumption The wireless sensors send the physiological...
Ngày tải lên: 28/11/2015, 14:02
sensor based learning for practical planning of fine motion in robotics ppt
... force and torque signals are available, the practical solution adopted is to use only the three torque signals as inputs to the map The reason for this is the strong correlation between the force ... action is performed and, afterwards, only optimal actions are chosen In our setup, when the system performs any action (motion), a negative constant reinforcement is signalled This reinforcement ... previous state and the performed action according to the reinforcement and the value of the next state The agent receives a constant negative reinforcement for each action it performs (action-penalty...
Ngày tải lên: 28/03/2014, 14:20
Event-Based Motion Control for Mobile- Sensor Networks ppt
... Algorithms for Guiding Navigation across Sensor Networks,” Proc 9th Ann Int’l Conf Mobile Computing and Networking (MOBICOM 03), ACM Press, 2003, pp 313–325 G.J Pottie, “Wireless Sensor Networks,” ... Coordination in Sensor Networks,” Proc 5th Ann Int’l Conf Mobile Computing and Networking (MOBICOM 00), ACM Press, 1999, pp 263–270 J Hill et al., “System Architecture Directions for Network Sensors,” ... each sensor broadcasts this position, letting every other sensor track that sensor s location This protocol has three versions, based on the amount of computation that each sensor must perform...
Ngày tải lên: 30/03/2014, 16:20