SECURITY IN WIRELESS SENSOR NETWORKS – IMPROVING THE LEAP PROTOCOL pptx

... on LEAP protocols, finding out its security drawbacks and limitations. A solution has been proposed in order to overcome the security issues faced in implementing this protocol whilst employing ... main purpose of these nodes is to gather information or events occurring from their targets. The main functions associated with sensor nodes include: collecting information on...

Ngày tải lên: 05/03/2014, 23:20

... reporting frequency rate used by the sensor nodes sending their read- ings to the sink in the decision interval . The variation of the Fig. 2. Observed event distortion for varying reporting frequency ... carry the same Event ID, then there is a single event oc- currence in the wireless sensor field as shown in Fig. 1. In this case, the sink achieves the desired...

Ngày tải lên: 16/03/2014, 19:20

... Localization in the wireless sensor networks Hình 3.1 Định nghĩa của các loại nút và tọa độ tương đối 18 Đồ án 2 Localization in the wireless sensor networks Để có một mô tả rõ ràng ,hình 1 minh họa ... cho các quá trình ra quyết định. 9 Đồ án 2 Localization in the wireless sensor networks 10 Đồ án 2 Localization in the wireless sensor networks CHƯƠNG...

Ngày tải lên: 27/05/2014, 11:41

... challenges in wireless sensor networks. We identify the security threats, review proposed security mechanisms for wireless sensor networks. Keywords: Wireless Sensor Networks (WSNs), Security, ... even at the initial phase when the sensors start to discover the neighboring information. IV. RELATED WORKS AND SECURITY SOLUTIONS IN WSN In the recent...

Ngày tải lên: 05/03/2014, 23:20

... containing all nodes covering the point x at any time during the time interval [t − t, t] σ (t, x) gives a set containing all connected nodes covering the point x at any time during the time interval ... extent. Combining the lifetime measures from the different parts can be done similarly to the combining of the single criteria, for example by using the minimum. 5. APPLIC...

Ngày tải lên: 28/04/2014, 13:38

... values. In this figure, D = n = 105 and the near-optimal cluster size obtained from Theorem 4.1, s no = 14 is indicated by the vertical line in the plot. Intersections of the dotted lines and the ... placement for in- network query processing. In Proceedings of the 2nd International Workshop on Information Processing in Sensor Networks (IPSN’03). Palo Alto, CA. Springe...

Ngày tải lên: 28/04/2014, 13:41

... values. In this figure, D = n = 105 and the near-optimal cluster size obtained from Theorem 4.1, s no = 14 is indicated by the vertical line in the plot. Intersections of the dotted lines and the ... placement for in- network query processing. In Proceedings of the 2nd International Workshop on Information Processing in Sensor Networks (IPSN’03). Palo Alto, CA. Springe...

Ngày tải lên: 28/04/2014, 13:41

... ðại Học Quốc Gia Thành Phố Hồ Chí Minh Trường ðại Học Bách Khoa Thành Phố Hồ Chí Minh Khoa ðiện-ðiện Tử Bộ Môn Viễn Thông  WIRELESS SENSOR NETWORKS Kỹ Thuật, Giao Thức và ... cần chọn lựa thông tin thời gian thực tại các tiết bị mạng, phân tích thông tin, và ñiều khiển ứng dụng dựa trên thông tin. Thông tin thường ñược sắp xếp như một cơ sở thông tin quản lý (MIB...

Ngày tải lên: 25/04/2013, 19:19

... noise and the signals from both the sender and jammers. Therefore, the strength of interfering signals cannot be obtained from the RSS of collided packets. In order to obtain the SINR at the receiver, ... ongoing transmissions in the vicinity are not significantly affected by the increased interference. If the check is passed, the node obtains the level of interferenc...

Ngày tải lên: 01/09/2013, 15:23