wireless and mobile networks

... radio band  up to 721 kbps Trang 35addressing and routing to mobile users 6.6 Mobile IP 6.7 Handling mobility in cellular networks 6.8 Mobility and layer protocols higher-6.9 Summary Trang 36Wireless, ... slides, and note our copyright of this material Thanks and enjoy! JFK/KWR All material copyright 1996-2012 J.F Kurose and K.W Ross, All Rights Reserved Trang 2Ch 6: Wireless and Mobile Networks ... FA  when mobile moves: new FA arranges to have data forwarded from old FA (chaining) 5 Trang 55addressing and routing to mobile users 6.6 Mobile IP 6.7 Handling mobility in cellular networks

Ngày tải lên: 25/02/2023, 15:51

... 1Computer Networks 1 (Mạng Máy Tính 1)Lectured by: Dr Phạm Trần Vũ Trang 2All material copyright 1996-2009J.F Kurose and K.W Ross, All Rights Reserved Trang 3Chapter 6: Wireless and Mobile NetworksBackground: ... access  wireless: communication over wireless link  mobility: handling the mobile user who changes point of attachment to network Trang 5Elements of a wireless networknetwork infrastructure wireless ...  handoff initiated by old BSS Trang 65Mobile Switching Center7 8 GSM: handoff with common MSC 4 new BSS signals MSC, old BSS: ready 5 old BSS tells mobile: perform handoff to new BSS 6 mobile,

Ngày tải lên: 28/01/2020, 22:39

... HANDBOOK OF WIRELESS NETWORKS AND MOBILE COMPUTING Handbook of Wireless Networks and Mobile Computing, Edited by Ivan Stojmenovic´ Copyright ... soft handoffs and softer handoffs In this chapter, we focus primarily on the hard handoff 1 2 HANDOFF IN WIRELESS MOBILE NETWORKS. .. 20 01 IVAN STOJMENOVIC ´ HANDBOOK OF WIRELESS ... the hard handoff 1 2 HANDOFF IN WIRELESS MOBILE NETWORKS BS 1 MS BS 2 a Before handoff BS 1 MS BS 2 b After handoff Figure 1. 1 Hard handoff between the MS and BSs A hard handoff

Ngày tải lên: 13/08/2014, 12:21

... Trang 1Wireless CommunicationsWireless Wide Area Networks Trang 2• Describe wireless wide area networks (WWANs) and how they are used • Describe the applications ... Third Generation (3G) – Intended to be a uniform and global standard for cellular wireless communication • Standard data rates – 144 Kbps for a mobile user – 386 Kbps for a slowly moving user ... a wireless digital cellular device • Common types of clients – WAP – i-mode – Java – BREW Trang 22Wireless Application Protocol (WAP and WAP Version 2) • Wireless Application Protocol (WAP) and

Ngày tải lên: 13/09/2012, 10:52

... attacks in wireless networks, especially in Mobile Ad hoc and Sensor Networks (MASNets) In this article, we propose a formal approach for digital investigation of security attacks in wireless networks ... roaming and IP handoff, and cluster crea-tion, splitting and merging Especially, in wireless sensor networks, observer nodes should be equipped with addi-tional computaaddi-tional, energy, and communication ... framework for digital investigation in wireless networks, especially sensor and ad hoc networks, turns out to be more tricky and challenging than in wireline networks To do so, a set of requirements

Ngày tải lên: 21/06/2014, 02:20

... Bougard, F Catthoor, D C Daly, A Chandrakasan, and W Dehaene, “Energy efficiency of the IEEE 802.15.4 standard in dense wireless microsensor networks: modeling and improvement perspectives,” in ... 802.15.4-2003, “IEEE Standards for Information Technology Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for LowRate Wireless Personal Area Networks (LR-WPANs),” ... Journal on Wireless Communications and Networking [4] B Zhen, H.-B Li, and R Kohno, “IEEE body area networks for medical applications,” in Proceedings of the 4th IEEE International Symposium on Wireless

Ngày tải lên: 21/06/2014, 11:20

... transmitter and the receiver and that between the interferer and the receiver ared Sandd I meters, respectively The transmission power of the transmitter and the interferer are P S and P I watts, ... types of practical networks including IEEE 802.11a wireless mesh [3,7] and other low-power multihop sensor networks [2, 4] More importantly, measurement studies on large-scale wireless mesh testbeds ... access networks, we propose an analytical framework to characterize partial interference for two representative types of multiple access wireless networks, namely, the IEEE 802.11 Wireless LANs and

Ngày tải lên: 21/06/2014, 11:20

... Article Automatic Modulation Recognition Using Wavelet Transform and Neural Networks in Wireless Systems K Hassan,1I Dayoub,2W Hamouda,3and M Berbineau1 1 Universit´e Lille Nord de France, F-59000 ... percentage of correct identification is about 97% In [6], Wong and Nandi have proposed a method for ADMR using artificial neural networks and genetic algorithms In their study, they have presented ... densities of phases and amplitudes In [20], Pedzisz and Mansour derived and analyzed a new pattern recognition approach for automatic modulation recognition of M-PSK signals in broadband Gaussian noise

Ngày tải lên: 21/06/2014, 16:20

... cellular networks, have to be enforced in a distributed and collaborative fashion by the nodes in wireless ad hoc networks [3, 4] Numerous MAC schemes have been proposed for wireless ad hoc networks, ... sublayer for WLANs as well as wireless ad hoc networks IEEE 802.11 is based on MACA [6] and MACAW [7] Nevertheless, IEEE 802.11 is designed for WLANs and wireless ad hoc networks with omnidirectional ... on Wireless Communications and Networking [3] A Khayyat and A Safwat, “The synchronized peer-to-peer framework and distributed contention-free medium access for multi-hop wireless sensor networks,”

Ngày tải lên: 21/06/2014, 23:20

... exploration, and so forth On the other hand, the locations of nodes are random, which makes it more difficult to analyze the performance of wire-less ad hoc networks Generally, wireless ad hoc networks ... framework of random graph Nodes and links of a net-work are considered as vertices and edges of a random graph G(V, E), respectively, where V is the set of vertices, each with a random location, andE ... on Wireless Communications and NetworkingVolume 2006, Article ID 31467, Pages 1 10 DOI 10.1155/WCN/2006/31467 On the Geometrical Characteristics of Three-Dimensional Wireless Ad Hoc Networks and

Ngày tải lên: 22/06/2014, 22:20

... group is wireless mobile networking simula-tion, protocols, security, and bandwidth management, ad hoc wire-less networks, wirewire-less LANs and MANs, wirewire-less fading modeling and measurements, ... of security and efficiency of the used bandwidth REFERENCES [1] L Salgarelli, M Buddhikot, J Garay, S Patel, and S Miller, “Efficient authentication and key distribution in wireless IP networks,” ... entities in mobile networks,” International Journal of Computer Science and Network Security, vol 6, no 3B, 2006 [11] J AL-Saraireh and S Yousef, “A new authentication proto-col for GSM and UMT networks,”

Ngày tải lên: 22/06/2014, 22:20

... for Directional Communications and Lifetime Optimization in Wireless Ad Hoc Networks Song Guo, 1 Oliver W W Yang, 2 and Victor C M Leung 1 1 Department of Electrical and Computer Engineering, The ... Cheng, J Sun, M Min, and D.-Z Du, “Energy-efficient broadcast and multicast routing in ad hoc wireless networks,” in Proceedings of the 22nd IEEE International Performance, Computing and Communications ... Communications and Mobile Computing Conference (IWCMC ’06), pp 419–424, Vancouver, BC, Canada, July 2006 [11] S Guo and O W W Yang, “Multicast lifetime maximization for energy-constrained wireless ad hoc networks

Ngày tải lên: 22/06/2014, 22:20

... Time-Frequency Analysis and Neural Networks for Mode Identification in a Wireless Software-Defined Radio Approach Matteo Gandetto Signal Processing and Telecommunication Group (SP&T), Biophysical and Electronic ... multiple access and direct sequence code division multiple access As a case study, two standards, based on the previous modes and operating in the same band (industrial, scientific, and medical), ... fundamental and integrating part of SR and CR because it allows one to support multimode and multiband communications according to SR In general, MI can be blind or assisted [10], and modes can

Ngày tải lên: 23/06/2014, 01:20

... Trang 4Topology Control in WirelessAd Hoc and Sensor Networks Trang 5Topology Control in WirelessAd Hoc and Sensor Networks Paolo Santi Istituto di Informatica e Telematica ... and my children to be To my families Trang 91.1 The Future of Wireless Communication 3 1.1.1 Ad hoc networks 3 1.1.2 Wireless sensor networks 5 1.2 Challenges 7 1.2.1 Ad hoc networks ... field of wireless ad hoc and sensor networking, and has been involved in the organizational and technical committee of several conferences in the field Dr Santi is a member of ACM and SIGMOBILE

Ngày tải lên: 27/06/2014, 00:20

... current and emerging wireless and mobile networks It offers an up-to-date state of the art on existing security solutions in the market or prototype and research security solutions of wireless and mobile ... current and emerging wireless and mobile communications coming from the mobile cellular communications such as 2G, 3G, 4G, IEEE wireless communication such as Wi-Fi, Bluetooth, WiMAX, WiMobile and ... book, which deals with the security of wireless and mobile networks Section 1.2 presents a state of the art of mobile cellular networks designed and standardized by organizations such as ITU,...

Ngày tải lên: 16/02/2014, 15:20

... Computer Networks Chapter 4: Wireless and Mobile Networks 15 Outline  Mobility Principles: addressing and routing to mobile users  Mobile IP  Handling mobility in cellular networks  Mobility and ... Computer Networks Chapter 4: Wireless and Mobile Networks 20 Outline  Mobility Principles: addressing and routing to mobile users  Mobile IP  Handling mobility in cellular networks  Mobility and ... doesnt mandate why to perform handoff (policy), only how (mechanism) handoff initiated by old BSS Computer Networks Chapter 4: Wireless and Mobile Networks 25 GSM: handoff with common MSC VLR Mobile...

Ngày tải lên: 26/11/2016, 02:09

... Balachandran et al [3] Balazinska and Castro [4] Chinchilla et al [5] Henderson et al [9] Hutchins and Zegura [10] Kotz and Essien [13] McNett and Voelker [16] Mishra et al [17] Schwab and Bunt ... MEASURING WIRELESS LANs M Balazinska and P Castro, Characterizing mobility and network usage in a corporate wireless local-area network, Proc 2003 Int Conf Mobile Systems, Applications, and Services ... http://standards.ieee.org/getieee802/download/ MIB-D6.2.txt 12 Kismet wireless sniffing software, http://www.kismetwireless.net 13 D Kotz and K Essien, Analysis of a campus-wide wireless network, Wireless...

Ngày tải lên: 20/01/2014, 01:21

... Protocols and Internetworking Research Bell Laboratories, Lucent Technologies, New Jersey, USA MOBILE, WIRELESS, AND SENSOR NETWORKS MOBILE, WIRELESS, AND SENSOR NETWORKS TECHNOLOGY, APPLICATIONS, AND ... Multihop Wireless Networks 105 Suman Banerjee and Archan Misra PART II RECENT ADVANCES AND RESEARCH IN SENSOR NETWORKS Detection, Energy, and Robustness in Wireless Sensor Networks 145 Lige Yu and ... ADVANCES IN WLANs AND MULTIHOP WIRELESS NETWORKS Measuring Wireless LANs Tristan Henderson and David Kotz Understanding the Use of a Campus Wireless Network 29 David Schwab and Rick Bunt QoS...

Ngày tải lên: 20/01/2014, 01:21

... slot channel output 6: Wireless and Mobile Networks 6-13 CDMA: two-sender interference 6: Wireless and Mobile Networks 6-14 Chapter outline 6.1 Introduction Wireless Ì 6.2 Wireless links, characteristics ... protocol between mobile and BS Mobile Switching Center Public telephone network, and Internet Mobile Switching Center wired network 6: Wireless and Mobile Networks 6-29 Cellular networks: the first ... addressing and routing to mobile users Ì 6.6 Mobile IP Ì 6.7 Handling mobility in cellular networks Ì 6.8 Mobility and higherlayer protocols 6.9 Summary 6: Wireless and Mobile Networks 6-28 Components...

Ngày tải lên: 12/09/2012, 15:06

... Organization and targeted audience game-theoretic models in a wide range of wireless and communication applications such as cellular and broadband networks, wireless local area networks, multi-hop networks, ... cellular and broadband networks: uplink power control in CDMA networks, resource allocation in OFDMA networks, power control in femtocell networks, IEEE 802.16 broadband wireless access, and vertical ... 3G), and resource allocation for OFDMA-based wireless cellular networks (e.g., IEEE 802.16) The range of applications covered by cellular and broadband wireless access networks is very wide and...

Ngày tải lên: 16/03/2014, 20:20