wlan and wireless sensor network wsn

... (SMP – Sensor Management Protocol), giao thức quảng bá liệu định nhiệm vụ cho sensor (TADAP – Task Assignment and Data Advertisement), giao thức phân phối liệu truy vấn cảm biến (SQDDP – Sensor ... ĐẦU Nhờ có tiến lĩnh vực truyền thông vô tuyến năm gần đây, mạng cảm biến không dây (Wireless Sensor Netwơrk -WSN) với giá thành rẻ, tiêu thụ lượng đa chức nên ý lĩnh vực thông tin Hiện nay, người ... khơng biết môi trường mà WSN hoạt động thay đổi mạnh mẽ qua thời gian Các giao thức WSN làm cho thiết bị thích nghi với mơi trường động sử dụng I.4.9 Thiết kế có hệ thống WSN ứng dụng cao cho chức...

Ngày tải lên: 22/11/2012, 09:13

... for Wireless Microsensor Networks ” IEEE Proc Hawaii Int’l Conf Sys Sci., Jan 2000, pp 1-10 http://www.ieee802.org/15/ Jamal N Al-Karaki and Ahmed E Kamal, “Routing Techniques in wireless sensor ... Specific Protocol Architectures for Wireless Networks by Wendi Beth Heinzelman http://www.isi.edu/nsnam/nam/ NAM Network Animator W.R Heinzelman, A Chandrakasan, and H Balakrishnan, “ Energy-Efficient ... KHÔNG DÂY WSN I.1 Giới thiệu I.2 Cấu trúc mạng WSN I.2.1 Cấu trúc node mạng WSN I.2.2 Cấu trúc mạng cảm biến không dây I.3 Kiến trúc giao thức mạng WSN I.4 Các yếu tố ảnh hưởng đến mạng WSN 12 I.4.1...

Ngày tải lên: 07/05/2017, 03:50

... Conference on Wireless Sensor Networks (EWSN ’09), Cork, Ireland, 2009, http://ewsn09.v6testbed.net/posters.html [9] G Werner-Allen, P Swieskowski, and M Welsh, “MoteLab: a wireless sensor network ... International Workshop on Sensor Network Engineering (IWSNE ’08), 2008 W K G Seah, A E Zhi, and H.-P Tan, Wireless sensor networks powered by ambient energy harvesting (WSNHEAP)—survey and challenges,” ... urbanscale wireless sensor network and testbed,” in Proceedings of the IEEE International Conference on Technologies for Homeland Security (HST ’08), pp 583–588, May 2008 [3] K Steenbergen and A Kamerman,...

Ngày tải lên: 21/06/2014, 11:20

... Shah and J M Rabaey, “Energy aware routing for low energy ad hoc sensor networks,” in Proceedings of IEEE Wireless Communications and Networking Conference (WCNC ’02), vol 1, pp 350–355, Orlando, ... knowledge of the network, which is too optimistic in errorprone wireless networks ADDRESSING AND ROUTING FOR ZigBee NETWORK This section introduces a fully decentralized addressing and routing policy ... newest standard could handle thousands of sensors However, we believe that our proposal, although originally designated for general WSNs, can be immediately applicable to the ZigBee network with...

Ngày tải lên: 21/06/2014, 23:20

... Heidemann, and F Silva, “Directed diffusion for wireless sensor networking,” IEEE/ACM Trans Networking, vol 11, no 1, pp 2–16, 2003 [2] H Gharavi and K Ban, “Multihop sensor network design for wide-band ... received signal at sensor i, and is the amplitude of the signal that is emitted by the target and received at 464 EURASIP Journal on Wireless Communications and Networking sensor i We adopt the ... transmitted from sensors to an access point, which could be an airplane that flies over the sensor field and collects data from the sensors The total number of sensors within the network and the total...

Ngày tải lên: 23/06/2014, 00:20

... theo ứng dụng có loại sensor riêng: sensor 14 nhiệt độ, sensor ánh sáng, sensor độ ẩm, sensor áp suất, sensor gia tốc, sensor từ, sensor âm thanh, hay chí sensor hình ảnh có độ phân giải thấp ... 51 PHỤ LỤC 52 MỞ ĐẦU Trong năm gần đây, mạng cảm biến không dây (WSN – Wireless Sensor Network) đầu tư nghiên cứu phát triển mạnh mẽ Nó ứng dụng hầu hết lĩnh vực xã hội mang ... Luận văn “Xây dựng phương pháp chuẩn hóa đầu đo khí ứng dụng mạng cảm biến không dây (WSN – Wireless Sensor Network) để giám sát mơi trường” giới thiệu quy trình chế tạo khí độc có nồng độ khác...

Ngày tải lên: 25/03/2015, 11:09

... node supports three network interface functions, one for connecting to ZigBee wireless sensor network, one for connecting to Internet network through building Local Area Network or ASDL line, ... module Fig shows the result of gateway node design C Sensor and actuator node design To create sensor and actuator nodes, different sensor interface and control circuits are designed When one of these ... Estrin, and M Srivastava, “Overview of sensor networks,” IEEE Computer Magaziner, pp 41–49, 2004 [2] J Lee, Y Su, and C Shen, “A comparative study of wireless protocols: Bluetooth, uwb, zigbee, and...

Ngày tải lên: 16/12/2017, 05:06

Ngày tải lên: 26/04/2013, 08:37

... 2.4 Network Structure and Hierarchical Networks • Hierarchical Networks WIRELESS SENSOR NETWORKS 3.1 IEEE 1451 and Smart Sensors 3.2 Transducers and Physical Transduction Principles 3.3 Sensors ... Structure and Hierarchical Networks • Multicast Systems 2.4 Network Structure and Hierarchical Networks • Hierarchical Networks 2.4 Network Structure and Hierarchical Networks • Hierarchical Networks ... Communication Protocols and Routing 2.3 Power Management 2.4 Network Structure and Hierarchical Networks 2.1 Network Topology Mesh networks • Mesh networks:are regularly distributed • networks that generally...

Ngày tải lên: 29/06/2013, 01:27

... J Polastre, R Szewczyk, and J Anderson, Wireless sensor networks for habitat monitoring”, Proceedings of the 1st ACM International workshop on Wireless sensor networks and applications, Atlanta, ... of sensors 43 REFERENCES [1] H Karl and A Willig, Protocols and Architectures for Wireless Sensor Networks, John Wiley and Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex, England, ... Y.Sankarasubramaniam, and E Cayirci, Wireless Sensor Networks: A Survey”, Elservier Computer Networks, Vol.38 (4), pp 393-422, March 2002 [15] A Mainwaring , D Culler , J Polastre , R Szewczyk , J.Anderson, Wireless...

Ngày tải lên: 17/02/2014, 22:20

... most wireless sensor network designs Because encryption and key management/establishment are so crucial to the defense of a wireless sensor network, with nearly all aspects of wireless sensor network ... on sensor security We classify the main aspects of wireless sensor network security into four major categories: the obstacles to sensor network security, the requirements of a secure wireless sensor ... obstacles for the sensor network security The security requirements of a wireless sensor network are listed in Section The major attacks in sensor network are categorized in Section 5, and we outline...

Ngày tải lên: 05/03/2014, 21:20

... from Eavesdroppers CONCLUSION Security in Wireless Sensor Network is vital to the acceptance and use of sensor networks In particular, Wireless Sensor Network product in industry will not get ... hours; and regular monitoring WSN network Key protects DLPDU from Eavesdropper Network Layer: In Table 3, we describe Network Layer Threats & Countermeasures in case of Wireless Sensor Network ... "Security in Wireless Sensor Networks", IEEE Wireless Communications, 2008 [4] J Granjal, R Silva, J Silva, "Security in Wireless Sensor Networks", CISUC UC, 2008 [5] Y Zou, K Chakrabarty, "Sensor...

Ngày tải lên: 28/03/2014, 22:20

... and their applications Chapter introduces power-aware wireless sensor networks Routing in wireless sensor networks and the aggregation techniques are discussed in Chapter Distributed sensor networks ... protocols, and distributed systems support for these networks Wireless sensor networks use new technology and standards They involve small, energy-efficient devices, hardware/software co-design, and networking ... to solving sensor network problems is presented The book includes a broad range of topics from networked embedded systems and smart sensor networks, to power-aware wireless sensor networks, routing,...

Ngày tải lên: 03/06/2014, 01:51

... Kunimori and Shinichi Kimura 393 Call Admission Control in Mobile and Wireless Networks 1 X Call Admission Control in Mobile and Wireless Networks Georgios I Tsiropoulos, Dimitrios G Stratogiannis and ... large bandwidth and low power consumption This second part of the book, Mobile and Wireless Communications: Key Technologies and Future Applications, covers the recent development in ad hoc and sensor ... been proposed Section 1: Network Aspects and Applications of Ad Hoc, Sensor and Mesh Networks Chapter investigates the importance of CAC (Call Admission Control) in wireless networks for providing...

Ngày tải lên: 21/06/2014, 14:20

... of low cost, low power sensor nodes with processing and wireless communication capabilities for variety of monitoring and control applications A Wireless Sensor Network (WSN) is a collection of ... proposed by Cooper and Nettleton in 1978 (Scholtz 1994) and then 38 Mobile and Wireless Communications: Network layer and circuit level design developed to the IS-95 and CDMA2000 standards which are ... provisioning in wireless networks Wireless Communications and Mobile Computing, (8), 957-969 Yang, X., Feng, G., & Kheong, D S (2006) Call admission control for multiservice wireless networks with bandwidth...

Ngày tải lên: 21/06/2014, 14:20

... more wireless networks allowing network chaining (Sulc 2007b) Example of IQMESH network chaining is shown in Fig Two networks in Fig 5, Network and Network 2, are independent IQRF wireless networks ... S., and Martalo, M (2007) "Wireless sensor networks: Performance analysis in indoor scenarios." Eurasip Journal on Wireless Communications and Networking Flowers, D., and Yang, Y (2008) "MiWi Wireless ... bridging IQMESH network and other standards IQMESH protocol supports both individual and group addressing, as well as a network broadcasting Besides standard features like bonding and discovery...

Ngày tải lên: 21/06/2014, 14:20

... operational bandwidth since the degradation happens only for a small part of the entire bandwidth and it is not too severe 122 Mobile and Wireless Communications: Network layer and circuit level ... also investigated Figures 15 and 16 illustrate the simulated and measured H-plane and E-plane radiation patterns 128 Mobile and Wireless Communications: Network layer and circuit level design respectively ... patch, and a partial 116 Mobile and Wireless Communications: Network layer and circuit level design ground plane etched on the opposite side of the dielectric substrate It provides a bandwidth...

Ngày tải lên: 21/06/2014, 14:20

... substrate and (b) comparison between simulated and measured antenna reflection coefficients 174 Mobile and Wireless Communications: Network layer and circuit level design Broad band and UWB Antennas ... (DCS/GSM/WCDMA/Bluetooth /WLAN) , hand held GPS and other navigation systems, 180 Mobile and Wireless Communications: Network layer and circuit level design MIMO Systems and steerable arrays In ... exhibit a band notch covering the bandwidth of the WLAN for IEEE 802.11a/h which is 5.15-5.825 GHz The OFF state the band notch is removed and the antenna bandwidth returned flat The simulation and...

Ngày tải lên: 21/06/2014, 14:20

... Simulated and (circles) measured S-parameters of a 8x125-μm GaN HEMT at (a) VGS = −2.0 V and VDS = 9.0 V and (b) VGS = −3.0 V and VDS = 21.0 V 212 Mobile and Wireless Communications: Network layer and ... 2000; Macedo & Copeland, 1998) They have high quality factor and good linearity; however, their high cost and their non 220 Mobile and Wireless Communications: Network layer and circuit level design ... values of R and C deviate such as R+∆R and C+∆C, the pole frequency differ from 1/(2πRC) and the residual voltage is given by 228 Mobile and Wireless Communications: Network layer and circuit...

Ngày tải lên: 21/06/2014, 14:20