denial of service in sensor networks

... 5Department of Telecommunication SystemsSchool of Engineering Blekinge Institute of Technology SWEDEN Trang 6© 2006 Stefan ChevulDepartment of Telecommunication Systems School of Engineering Publisher: ... perception of a networked service Thus, the goal of thisthesis is directed towards gaining a better understanding of how the networkinfluences an application’s perception of QoS by investigating the ... link was not reached Finally, the thesis discusses the suitability of wireless networks for differentmobile services, since the influence of the network on the application-perceivedQuality of Service

Ngày tải lên: 18/10/2013, 12:15

... 18Quality of InformationThe main goal of operation of sensor networks is collection of informationabout events and phenomena happening in the area where the sensors aredeployed Therefore, in deciding ... common type of such shared infrastructure havebeen computer networks Because of this reason the most of the original re-search in the area of Quality of Service was done in the area of networks ... Engineering National University of Singapore April 2008 Trang 21 Introduction 41.1 Overview of Quality of Service 5 1.2 Application-level Quality of Service 6 1.3 Overview of Sensor Networks

Ngày tải lên: 11/09/2015, 14:22

... ways toincorporate some of these schemes of wireless and wire-line networks I devoteseveral chapters of this book to address incorporation of these schemes in adhoc networks In the following, I ... with providing quality of service (QoS) in ad hoc networks It should be pointed out that security and quality of serviceare two distinct attributes that are independent of each other in general ... by injecting a small number of mal- icious packets If the routing protocol is self-stabilizing, an attacker who wishes to inflict continuous damage must remain in the network and continue sending

Ngày tải lên: 25/03/2014, 12:07

... problem of applying classical kernel machines to distributed learning in sensor networks is that the order of the resulting models scales linearly with the number of deployed sensors and measurements ... quadratic in the routing distance, and linear in the number of bits sent The proposed algorithm transmits information between neighboring sensors and requires the transmission of a small amount of information ... reproduction in any medium, provided the original work is properly cited Wireless sensor networks rely on sensor devices deployed in an environment to support sensing and monitoring, including temperature,

Ngày tải lên: 21/06/2014, 17:20

... producers of Wi-Fi suggest using WPA in preshared key only in the home of the SOHO environment or in environments where there is a low proba-bility of attempting attacks on security [8,9] During 2002, ... EAP-TLS and PEAP) The third type consisted of spoofing of 4 types of EAP protocol messages So in this case the possibility of hacking referred to (i) flooding associate requests or EAOPL-start packets ... outlined in 2002, except problems at-tached to disassociate or deauthenticate requests, have been avoided in the following release of WPA and in WPA2 In 2003, in order to show the vulnerability of

Ngày tải lên: 22/06/2014, 22:20

... weighted fair queuing-based provisioning method offers effectively zero blocking and complete sharing of bandwidth Bandwidth provisioning methods also focus on maintaining QoS in terms of latency and ... Reinforcement Learning-based Provisioning 4.1 Introduction 43 4.2 Theory 44 4.2.1 Basic Concepts 45 4.2.2 Advantages of Using Reinforcement Learning 48 4.2.3 Application of Reinforcement Learning ... INTELLIGENT ADAPTIVE BANDWIDTH PROVISIONING FOR QUALITY OF SERVICE IN UMTS CORE NETWORKS TIMOTHY HUI CHEE KIN (B Eng (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING

Ngày tải lên: 08/11/2015, 16:30

... vào Trên cơ sở Trang 5thông tin tài nguyên khả dụng được phản hồi từ nút lõi, nút biên vào thực hiện điều chỉnh một cách linh hoạt kích thước của các chùm được sinh ra nhằm đem lại hiệu quả về ... khiển được hình thành và được gửi đi trước một khoảng thời gian bù đắp (thời gian offset) Khoảng thời gian offset này cần được tính toán sao cho đủ để đặt trước tài nguyên và cấu hình các chuyển ... gói điện nhằm có thể triển khai trên các cấu trúc liên kết vòng hay lưới nhằm có thể điều chỉnh linh hoạt để đáp ứng với việc lưu lượng thay đổi Tuy nhiên, với một số hạn chế về mặt công nghệ,

Ngày tải lên: 30/03/2021, 07:01

... Puthal, and S Dutta, “Best Fit Void Filling Algorithm in Optical Burst Switching Networks,” in 2009 Second International Conference on Emerging Trends in Engineering & Technology, 2009, pp 609– 614, ... Kaheel and H Alnuweiri, “A strict priority scheme for quality-of-service provisioning in optical burst switching networks,” in Proceedings of the Eighth IEEE Symposium on Computers and Communications ... Distance Fairness Provisioning in Optical Burst Switching NetworksFair Bandwidth Allocation with Distance Fairness Provisioning in Optical Burst Switching Networks,” in 2010 IEEE Global Telecommunications

Ngày tải lên: 14/04/2021, 21:51

... Load-based Dynamic Wavelength Grouping Nhóm bước sóng động dựa trên tải LLAC Load-Level Admission Control Điều khiển chấp nhận dựa trên tải Min-EV Minimum Ending Void Khoảng trống với kết thúc ... này Tôi xin trân trọng cảm ơn sự giúp đỡ của Quý Thầy Cô trong Khoa Công nghệ Thông tin - Trường Đại học Khoa học Huế đã quan tâm, giúp đỡ, hướng dẫn trong suốt quá trình học tập Tôi xin trân ... kỳ công trình nào khác Nghiên cứu sinh Phạm Trung Đức Trang 4ii LỜI CẢM ƠN Trước hết tôi xin bày tỏ lòng biết ơn chân thành và sâu sắc đến PGS TS Võ Viết Minh Nhật và TS Đặng Thanh Chương là

Ngày tải lên: 30/06/2021, 00:36

... done in [11] These schemes can save energy and bandwidth in large sensor networks Based on information in incoming Session Messages, the Inter-cSimplex Message Thread at the sender-side maintains ... originally developed for reliable upgrade of control software in mission-critical real-time systems [1] This work extends Simplex to the domain of communication software upgrade in sensor networks ... no single point of failure This is important in sensor networks as node failures, e.g due to battery depletion, are common As discussed in [11], single-point, purely sender-based control using

Ngày tải lên: 18/10/2022, 12:43

... University of Singapore Trang 5Kee Chaing Chua Mohan Gurusamy Yong Liu Minh Hoang Phung Department of Electrical and Computer Engineering National University of Singapore Singapore Quality of Service ... which are deployed in currentbackbone networks, comprise WDM point-to-point links In thesenetworks, routers are connected by high-bandwidth WDM links At each router, all incoming Internet Protocol ... a switching stage to the input of the next switching stage In afeedback configuration, delay lines connect the output of a switch-ing stage back to the input of the same stage Long holding timeand

Ngày tải lên: 28/02/2023, 16:49

... label 4.3 Integrating Early Dropping and Wavelength Grouping Schemes Since both early dropping and wavelength grouping differentiationschemes result in inefficient wavelength utilization, the integratedscheme ... from thebottleneck link to other lightly loaded links Since the remainingcapacity of the path is determined by the bottleneck link, thealgorithm will maximise the path’s remaining capacity and allowmore ... between the benefit of using a lightly-loadedpath and the disadvantage of using a longer path Consider the traffic assignment process in a specific time win-dow T (i) Initially, in time winwin-dow T (0),

Ngày tải lên: 28/02/2023, 16:50

... thông tin về độ dài chùm và lớp ưu tiên, giúp đặt trước tài nguyên (bước sóng) tại các nút trung gian Gói điều khiển và dữ liệu được truyền riêng biệt trên các kênh khác nhau, mang lại sự linh hoạt ... định tuyến các gói tin IP trong miền quang mà không cần chuyển đổi sang miền điện tử tại mỗi nút mạng.OPS sử dụng một ma trận chuyển mạch có khả năng cấu hình lại cho từng gói tin đến, cho phép ... gói tin không vượt quá 1% Nếu xác suất mất gói tại một bộ định tuyến vượt quá mức này, yêu cầu CLDV sẽ không đạt Do đó, việc nâng cao CLDV là cần thiết cho đường truyền tốc độ cao của mạng Internet

Ngày tải lên: 13/05/2023, 07:54

... (ERDs) of the join An ERD is defined in the following way: Given a set of attributes A1 … An that are used in the join predicates of a query, an ERD consists of a set of ranges in the domain of ... following types of joins: - Small join tables that fit in the RAM of a single node - Intermediate join tables that exceed the memory of a single node, but can fit in the aggregate memory of a ... of sensor nodes in the network It uses a novel algorithm to store several copies of the join table at different groups of neighboring nodes in the network, sending each sensor tuple to one of

Ngày tải lên: 30/03/2014, 16:20

... system, in another way is recruitment of the Agent Network. Depending on the type of denial of service planned, the attacker needs to find a large number of vulnerable machines to use for attacking. ... marking in a certain distance leg of the victim network to increase capacity to the destination of the packet in this scheme. Pi filters can occur once the mark has been installed in the infrastructure. ... part of the attack. In Pi marking scheme Basically, each router participating in certain mark bit IP identification field of IP packets. The location of the symbols in this field is determined

Ngày tải lên: 12/04/2014, 15:43

... lead to degradation of localization performance Handling of decoding errors will be discussed inSection 7 7 Decoding of Merged Bins and Handling Decoding Errors In the decoding process, the fusion ... nodes reduces the number of bins that are being used This will cause a corresponding increase of uncertainty However, the fusion node that receives a combination of the bins from all the nodes ... be minimized in an iterative manner (The new cost function to be minimized  x 2 The topic of quantizer design in distributed setting information.) Since the correlation between sensor readings

Ngày tải lên: 21/06/2014, 08:20

... presence of two traffic anomalies induced by the attacks: periodic fluctuations in the incoming TCP data traffic and a decline in the trend of the outgoing TCP acknowledgement (ACK) traffic In the first ... Attack Traffic When the bulk of the attack traffic is present in the incoming data traffic, Vanguard uses an anomalous increase in the ratio of the incoming TCP traffic to the outgoing TCP ACK traffic to detect ... portion of the bottleneck link capacity, the incoming TCP data traffic adapts to the remaining bandwidth without significant fluctuations 5.5.2 The DTW Method Besides filtering noise in the incoming

Ngày tải lên: 21/06/2014, 22:20

... [1]G.Fuchs,S.Truchat,andF.Dressler,“Distributedsoftware management in sensor networks using profiling techniques,” in Proceedings of the 1st International Conference on Communi- cation System Software and Middleware (COMSWARE ’06): 1st International ... terms of hardware and software configurations are steadily increasing in wireless sensor net- works (WSNs). Therefore, software management is becoming one of the most prominent challenges in this ... lected all the current configurations of the neighboring sensor nodes in form of a list of NPs. (2) <match profiles> determines all possible combina- tions of applications and modules, which

Ngày tải lên: 22/06/2014, 22:20

... point determines which sensor should transmit according to the channel states of the sensors In this paper, we are interested in distributed infor-mation retrieval which, in the context of sensor ... better that the sensor saves the energy by not transmitting (and not creating interference to oth-ers) What is missing in this line of argument, however, is the cost of obtaining channel states ... transmitting sensors in or-der to determine the rate of transmission In Section 4, we show that with the proposed opportunistic carrier sensing, each transmitting sensor obtains the channel states of

Ngày tải lên: 23/06/2014, 00:20