Ppt on mobile network layer

Lecture 22 University of Nevada – Reno Computer Science & Engineering Department Fall 2015 CPE 400 / 600 Computer Communication Networks Prof. Shamik Sengupta.

 air-interface: physical and link layer protocol between mobile and BS cell wired network Wireless, Mobile Networks 6-101 BSC BTS Base transceiver station (BTS) Base station controller (BSC) Mobile Switching Center (MSC) Mobile subscribers Base station system (BSS) Legend 2G (voice) network architecture MSC Public telephone network Gateway MSC G Wireless, Mobile Networks 6-102 3G (voice+data) network architecture radio network controller MSC SGSN Public telephone network Gateway MSC G Serving GPRS/


Network Layer4-1 Chapter 4 Network Layer Computer Networking: A Top Down Approach Featuring the Internet, 2 nd edition. Jim Kurose, Keith Ross Addison-Wesley,

agents advertise service by broadcasting ICMP messages (typefield = 9) R bit: registration required H,F bits: home and/or foreign agent Network Layer4-144 Mobile IP: registration example Network Layer4-145 Network Layer: summary Next stop: the Data link layer! What we’ve covered: r network layer services r routing principles: link state and distance vector r hierarchical routing r IP r Internet routing protocols RIP, OSPF, BGP/


1 Mobile Ad Hoc Networks: Routing, MAC and Transport Issues Nitin H. Vaidya University of Illinois at Urbana-Champaign

low  Reactive protocols tend to loose more packets (assuming than network layer drops packets if a route is not known)  Proactive protocols perform better with high mobility and dense communication graph 401 UDP Performance  Many variables affect/endpoints when hosts along the path move away 518 Implementation Issues: Where to Implement Ad Hoc Routing  Link layerNetwork layer  Application layer 519 Implementation Issues: Security  How can I trust you to forward my packets without tampering?  Need /


T-110.5140 Network Application Frameworks and XML Routing and mobility 10.2.2009 Sasu Tarkoma Based on slides by Pekka Nikander.

binding updates u Must be secured through IPsec u ESP is used for updates and acks n Shoulds: init messages, prefix discovery Multi-layer Operation n Mobility and multi-homing can be realized on different layers u Network F Mobile IP u Between network and transport F Host Identity Protocol (HIP) u Transport (SCTP) F TCP extensions u Application F SIP, Wireless CORBA, overlays F Re/


T-110.5140 Network Application Frameworks and XML Routing and mobility 12.2.2007 Sasu Tarkoma Based on slides by Pekka Nikander.

binding updates u Must be secured through IPsec u ESP is used for updates and acks n Shoulds: init messages, prefix discovery Multi-layer Operation n Mobility and multi-homing can be realized on different layers u Network F Mobile IP u Between network and transport F Host Identity Protocol (HIP) u Transport (SCTP) F SCTP, DCCP F TCP extensions u Application F SIP, Wireless CORBA/


1 Mobile Ad Hoc Networks: Protocols and Security Issues Nitin H. Vaidya University of Illinois at Urbana-Champaign

and misbehavior  Key management in wireless ad hoc networks  Secure communication in ad hoc networks  MAC layer issues  Network layer issues  Related activities  References 5 Mobile Ad Hoc Networks (MANET) 6 Mobile Ad Hoc Networks  Formed by wireless hosts which may be mobile  Without (necessarily) using a pre-existing infrastructure  Routes between nodes may potentially contain multiple hops 7 Mobile Ad Hoc Networks  May need to traverse multiple links to reach a/


Vertical Handovers in Heterogeneous Next-Generation Wireless Networks Prof. George Kormentzas, University of the Aegean.

with the CN. This results in enhanced location privacy.  Minimizes signaling overhead in the wireless parts of the network 37 Trends in Network-layer Mobility Management Protocols  Differentiate between global and local mobility Handle mobility in hierarchical manner  Add functionality at the network side to support closer-to- seamless mobility Add support for transfer of context (information regarding access control, QoS profile, header compression for real-time applications/


UNIT-II 3G AND 4G CELLULAR NETWORKS Migration to 3G Networks – IMT 2000 and UMTS – UMTS Architecture – User Equipment –Radio Network Subsystem – UTRAN.

164 802.16 Entities BS- Base Station PHY and MAC are the main layers Central role in point-to multipoint (PMP) modes Coordination role in resource management Connection/gateway point to other networks ( backhaul, core IP, Internet) Usually out-door installation SS – Subscriber Station Single user SS – fixed station Mobile Station - MS MSS - Multiple Subscriber Station (playing role of an AP for LAN/


Transport and Networks Layers Dr. Hussein Al-Bahadili Faculty of Information Technology University of Petra

– h.al-bahadili@aau.edu.jo)h.al-bahadili@aau.edu.jo Network and Network Layers - Dr. Hussein Al-Bahadili 122 Mobile IP (Nonpractical Solutions) In order to enable mobile users stay connected to the Internet, some solutions could be: 1.Giving /-bahadili@aau.edu.jo)h.al-bahadili@aau.edu.jo Network and Network Layers - Dr. Hussein Al-Bahadili 128 Mobile IP (Recursive Tunneling) Levels of mobility is an important issue to be addressed by the Mobile IP Working Group. This problem arises in an airplane with/


6: Wireless and Mobile Networks 6-1 Chapter 6 Wireless and Mobile Networks A note on the use of these ppt slides: We’re making these slides freely available.

6.8 Mobility and higher- layer protocols 6.9 Summary 6: Wireless and Mobile Networks 6-63 What is mobility? r spectrum of mobility, from the network perspective: no mobility high mobility mobile wireless user, using same access point mobile user, passing through multiple access point while maintaining ongoing connections ( like cell phone) mobile user, connecting/ disconnecting from network using DHCP. 6: Wireless and Mobile Networks 6-64 Mobility: Vocabulary home network: permanent “home” of mobile (e.g/


Mobile Computing Lab. Computer Network 2009/Fall 1 Gihwan Cho Computer Networks 2009/Fall Division of Computer Science & Engineering Chonbuk University.

Cho Architectural Approaches (I)  Connection oriented virtual circuit  Connectionless datagram PDU’s routed independently from source ES to destination ES through routers and networks share common network layer protocol, e.g. IP below have network access on each node Mobile Computing Lab. Computer Network 2009/Fall 120 Gihwan Cho  Connectionless internetworking (cont.) advantages  flexibility  robust  no unnecessary overhead unreliable  not guaranteed delivery  not guaranteed order of/


1 Mobile Communications Chapter 7: Wireless LANs  Characteristics  IEEE 802.11  PHY  MAC  Roaming .11a, b, g, h, i …  HIPERLAN  Standards overview.

 H/2, HIPERLAN/2 also used High data rates for users  More efficient than 802.11a Connection oriented QoS support Dynamic frequency selection Security support  Strong encryption/authentication Mobility support Network and application independent  convergence layers for Ethernet, IEEE 1394, ATM, 3G Power save modes Plug and Play www.hiperlan2.com 72 2 3 1 AP HiperLAN2 architecture and handover scenarios APTAPC Core/


Computer Networks - The Network Layer - Dr. Hussein Al-Bahadili 1/136 Computer Networks Dr. Hussein Al-Bahadili

Al-Bahadili 44/136 The IP Protocol IP Addresses Internet Control Protocols OSPF – The Interior Gateway Routing Protocol BGP – The Exterior Gateway Routing Protocol Internet Multicasting Mobile IP IPv6 The Network Layer in the Internet Computer Networks - The Network Layer - Dr. Hussein Al-Bahadili 45/136 Principles that drove the design of the NL in the Internet: 1. Make sure it works 2. Keep it simple/


Network Layer4-1 Reti di calcolatori e Sicurezza -- Network Layer --- Part of these slides are adapted from the slides of the book: Computer Networking:

agents advertise service by broadcasting ICMP messages (typefield = 9) R bit: registration required H,F bits: home and/or foreign agent Network Layer4-169 Mobile IP: registration example Network Layer4-170 Network Layer: summary Next stop: the Data link layer! What we’ve covered: r network layer services r routing principles: link state and distance vector r hierarchical routing r IP r Internet routing protocols RIP, OSPF, BGP/


1 Chapter 4: Wireless Internet. 2 What is Wireless Internet?  Wireless Internet refers to the extension of the services offered by the Internet to mobile.

Wireless Internet?  Wireless Internet refers to the extension of the services offered by the Internet to mobile users.  Many issues need to be solved for wireless Internet: Address mobility: Traditional IP addressing does not support address mobility. Mobile IP is a solution to these network layer issue. Inefficiency of transport layer protocols: Traditional TCP might falsely identify that the data loss is because of congestion but in/


Network Layer4-1 Chapter 4 Network Layer Computer Networking: A Top Down Approach Featuring the Internet, 2 nd edition. Jim Kurose, Keith Ross Addison-Wesley,

agents advertise service by broadcasting ICMP messages (typefield = 9) R bit: registration required H,F bits: home and/or foreign agent Network Layer4-144 Mobile IP: registration example Network Layer4-145 Network Layer: summary Next stop: the Data link layer! What we’ve covered: r network layer services r routing principles: link state and distance vector r hierarchical routing r IP r Internet routing protocols RIP, OSPF, BGP/


Chapter 6 Wireless and Mobile Networks

Access architecture standards (e.g., GSM) Mobility 6.5 Principles: addressing and routing to mobile users 6.6 Mobile IP 6.7 Handling mobility in cellular networks 6.8 Mobility and higher-layer protocols 6.9 Summary 6: Wireless and Mobile Networks What is mobility? spectrum of mobility, from the network perspective: no mobility high mobility mobile wireless user, using same access point mobile user, connecting/ disconnecting from network using DHCP. mobile user, passing through multiple access point/


Chapter 6 Wireless and Mobile Networks

standards (e.g., GSM) Mobility 6.5 Principles: addressing and routing to mobile users 6.6 Mobile IP 6.7 Handling mobility in cellular networks 6.8 Homeless Mobile IP 6.9 Mobility and higher-layer protocols 6.10 Summary 6: Wireless and Mobile Networks What is Mobility? Spectrum of mobility, from the network perspective: no mobility high mobility mobile wireless user, using same access point mobile user, connecting/ disconnecting from network using DHCP. mobile user, passing through multiple/


Mobile Communications Chapter 4: Wireless Telecommunication Systems

. G. Krüger E. Dorner / Dr. J. Schiller Universität Karlsruhe Institut für Telematik DECT layers III Mobilkommunikation SS 1998 Network layer similar to ISDN (Q.931) and GSM (04.08) offers services to request, check, reserve, control, and release resources at the basestation and mobile terminal resources necessary for a wireless connection necessary for the connection of the DECT system to the/


Mobile Ad Hoc Networks: Routing, MAC and Transport Issues

protocols may yield lower routing overhead than proactive protocols when communication density is low Reactive protocols tend to loose more packets (assuming than network layer drops packets if a route is not known) Proactive protocols perform better with high mobility and dense communication graph UDP Performance Many variables affect performance Traffic characteristics one-to-many, many-to-one, many-to-many small bursts/


Chapter 6 Wireless and Mobile Networks

Internet Access architecture standards (e.g., GSM) Mobility 6.5 Principles: addressing and routing to mobile users 6.6 Mobile IP 6.7 Handling mobility in cellular networks 6.8 Mobility and higher-layer protocols 6.9 Summary Wireless, Mobile Networks What is mobility? spectrum of mobility, from the network perspective: no mobility high mobility mobile wireless user, using same access point mobile user, connecting/ disconnecting from network using DHCP. mobile user, passing through multiple access point while/


Building the Next Generation Mobile Network Vision & Blue Print Towards a SMART Broadband Caribbean Community Vincent T Spinelli Managing Director, Mobile.

30+k concurrent flows How Do we make it work? Software defined networking (SDN) is key Mobile Service Architecture Access Layer Service Control & Enforcement Layer Application Layer Standardized Approach/Framework Leverage SDN Principles Evolve Business Processes Evolve Access Network Evolve Core Network Standardized Systems Mobile network vision simplification, flexibility, & automation Physical Plane Reduce and simplify the layers of Points of Concentration TODAY FUTURE PoC Data Center Internet Peering/


© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February 2009© 3GPP 2009 3GPP The Training Course / Module 9 1 All you always wanted to know about.

, rules, vocabulary, … 02.-seriesStage 1 (service requirements) 03.-seriesStage 2 (abstract architecture) 04.-seriesStage 3 (protocols, mobilenetwork) 05.-seriesRadio physical layer, data link layer, radio resource protocols 06.-seriesCODECs 07.-seriesData communication 08.-seriesStage 3 Base station to mobile switching centre protocols 09.-seriesStage 3 Intra-core-network layer 3 protocols 10.-seriesWork plan management (internal progress tracking reports) 11.-seriesSIM, terminal test specs 12.-seriesOA/


Chapter 5 The Network Layer

an area, that, too, should be announced to allow deregistration, but many users abruptly turn off their computers when done. 5. The Network Layer 5.2 Routing Algorithms 5.2.8 Routing for Mobile Hosts Packet routing for mobile hosts 5. The Network Layer 5.2 Routing Algorithms 5.2.9 Broadcast Routing One broadcasting method that requires no special features from the subnet is for/


CEG436: Mobile Computing Mobile IP. What is mobility? spectrum of mobility, from the network perspective: no mobility high mobility mobile user, using.

8 bytes of address per host) – perform address translation along the way by some specialized agents that cache both addresses. CEG436 31 A Mobile Network Layer Arch Home address (HA): a location-independent address for a MH Home network: the network identified by the net id part of the HA of MH. A home net has some special agents for proxy-arp, packet forwarding, address/


IP technology, part 2 1) Mobility aspects (terminal vs. personal mobility) 2) GPRS (IP traffic in mobile network) 3) Session Initiation Protocol (SIP)

Mobility aspects (terminal vs. personal mobility) 2) GPRS (IP traffic in mobile network) 3) Session Initiation Protocol (SIP) 4) Mobile IP (adding mobility to wireless network) 5) Quality of Service (QoS) support 6) ATM basics Mobility in IP networks Personal mobility (e.g. offered by SIP) Terminal mobility (e.g. offered by GPRS) The Mobile/ Codecs RTP Terminal / application control UDP TCP Network layer (IP) Data link layer Physical layer User planeControl plane (signalling) Registration, Admission and/


Chapter 5 The Network Layer

an area, that, too, should be announced to allow deregistration, but many users abruptly turn off their computers when done. 5. The Network Layer 5.2 Routing Algorithms 5.2.8 Routing for Mobile Hosts Packet routing for mobile hosts 5. The Network Layer 5.2 Routing Algorithms 5.2.9 Broadcast Routing One broadcasting method that requires no special features from the subnet is for/


CS 5700 – Computer Security and Information Assurance Section 2 (Ch

Defined in terms of protocols not layers but can be represented in terms of four layers: Application layer Host-to-host (e2e =end-to-end) transport layer Internet layer Physical layer Some people use different layer names (e.g. Application, Network, Data Link, and Physical - cf/ with false price (Slide 80) Why is it easy to manipulate browser-script interaction? Threats to active or mobile code (7) Why is it easy to manipulate browser-script interaction? Programmers often lack security knowledge Don’t /


Security in Wireless Ad Hoc and Sensor Networks

layers. During this discussion, we present asurvey ofprotocols and algorithms proposed thusfarfor sensor networks. Please note that thisisan introductory discussion. We give the key ideas but not the details related to the protocols and algorithms. Before conclusion we show a couple of slides where several simulation and testing tools for sensor and actuator networks are introduced. Tactical Communications Challenges Multimedia communications Multi-tier networking Mobile networking Mobile/


Univ. of TehranComputer Network1 Special Topics on Wireless Ad-hoc Networks University of Tehran Dept. of EE and Computer Engineering By: Dr. Nasser Yazdani.

TehranComputer Network27 Link Level Retransmissions wireless physical link network transport application physical link network transport application physical link network transport application rxmt TCP connection Link layer state Univ. of TehranComputer Network28 Link Level Retransmissions/ If specialized transport protocol used on wireless, then wireless host also needs modification In case of Mobile host, the state of BS can be transferred. Univ. of TehranComputer Network46 Split Connection Approach /


Computer Networks This PPT is Dedicated to my inner controller

Deauthentication Privacy Data Delivery Base station send a challenge frame: see if mobile station knows secret key (password) Mobile station returns the challenge frame encrypted using the key Mobile breaks connection and will need to authenticate again if it wants back into the network Encryption & Decryption RC4 algorithm Higher layers must deal with detecting and correcting errors BLUETOOTH Bluetooth is a specification for the use/


1 School of Computing Science Simon Fraser University CMPT 771/471: Wireless Networks Instructor: Dr. Mohamed Hefeeda.

6.8 Mobility and higher- layer protocols 6.9 Summary 6: Wireless and Mobile Networks 6-43 What is mobility? r spectrum of mobility, from the network perspective: no mobility high mobility mobile wireless user, using same access point mobile user, passing through multiple access points while maintaining ongoing connections ( like cell phone) mobile user, connecting/ disconnecting from network using DHCP. 6: Wireless and Mobile Networks 6-44 Mobility: Vocabulary home network: permanent “home” of mobile (e.g/


6: Wireless and Mobile Networks 6-1 Chapter 6 Wireless and Mobile Networks.

6.8 Mobility and higher- layer protocols 6.9 Summary 6: Wireless and Mobile Networks 6-42 What is mobility? r spectrum of mobility, from the network perspective: no mobility high mobility mobile wireless user, using same access point mobile user, passing through multiple access point while maintaining ongoing connections ( like cell phone) mobile user, connecting/ disconnecting from network using DHCP. 6: Wireless and Mobile Networks 6-43 Mobility: Vocabulary home network: permanent “home” of mobile (e.g/


Mobile Testing Online Part 3

development, is a software testing process for quality control of video games. Specific of the Mobile Game testing: 1. Layer: Functionality – Usability – Performance – Sync Services 2. Layer: Game Script –Player Profile – Score/Championship - Upgrade Store – Bonus – Social Network (OMP/MMORPG) 3. Layer: Global Monetanization System 4. Layer: Security – Analytics Testing 5. Layer: Classic Web site application testing techniques 6. Industry Specific: Compliance testing, Soak Testing Copyright Portnov/


Lecture 9 Mobile Networks: IP Addressing and Mobile IP Wireless Networks and Mobile Systems.

function for a host ● Use link level (Layer 2) mobility ■ Some Layer 2 protocols support mobility (e.g., between access points in IEEE 802.11 infrastructure networks) ■ Requires that the mobile host not leave the local IP subnet ● Mobile IP ■ Extension to IP routing to support mobile nodes in a scaleable and secure manner Mobile Networks: IP Addressing and Mobile IP 13 Mobile IP ● Mobile IP allows a host to move to a/


Mobile Communications Chapter 4: Wireless Telecommunication Systems

. G. Krüger E. Dorner / Dr. J. Schiller Universität Karlsruhe Institut für Telematik DECT layers III Mobilkommunikation SS 1998 Network layer similar to ISDN (Q.931) and GSM (04.08) offers services to request, check, reserve, control, and release resources at the basestation and mobile terminal resources necessary for a wireless connection necessary for the connection of the DECT system to the/


Mobile Communications Chapter 7: Wireless LANs

one standard cannot satisfy all requirements range, bandwidth, QoS support commercial constraints HIPERLAN 1 standardized since 1996 higher layers medium access control layer network layer logical link control layer channel access control layer data link layer medium access control layer physical layer physical layer physical layer HIPERLAN layers OSI layers IEEE 802.x layers Mobile Communications: Wireless LANs : Courtesy of Jochen Schiller 7.31.1 Overview: original HIPERLAN protocol family Check out/


Mobile OS and Mobile Service Architectures Prabhaker Mateti CEG4361.

explicit all assumptions about the system – Enable generalizations about the system, based on these assumptions. CEG43659 CEG43660 Software and Hardware Service Layers CEG43661 Distributed object management Spanning layers Network 1Network 2 TCPUDP Windows TCPUDP UNIX/Linux Application TCPUDP Mac OS Internet protocol Spanning layer Mobile TCPs UDP Wireless Network Mobile Platform MobileIP Spanning layer Certain protocols are designed with the specific purpose of bridging differences at the lower/


Bringing Cellular Service to Wireless Habitat Networks Understanding, evaluating & extending the Unlicensed Mobile Access (UMA) architecture Anshuman.

II TRANSPORT IP IPSec ESP REMOTE IP Unlicensed Lower Layers TCP UMA RLC LLC UPPER LAYERS Transport IP Remote IP NETWORK SERVICE PHYSICAL Upper Layers BSSGP Unlicensed Lower layers Access Layers ACCESS LAYERS MS Standard AP Broadband IP N/W UNC SGSN/ radios like blue-tooth work effectively. Not necessarily well administered, e.g. home WLANs. Opportunities/Challenges: Current mobile devices (PDAs, cell phones) already come with an inbuilt (alternate) radio (Bluetooth or Infrared) primarily for synchronization/


Mobile IP, and Micro Mobility

applied!! clearly, a corresponding host does not know (need not – by network layering concept) the moving host’s current network id Why Mobile IP ? (II) So, which layer should take charge of host mobility? applications, transport? IP? NI? sure, IP could give to higher level protocols the abstraction that the network address remains unchanged, therefore Mobile IP Mobile IP allows users of portable computers to move form one place/


Security Issues, Concepts and Strategies in Wireless And Mobile Systems By: Imad Jawhar.

-commerce transactions [3]. It provides reliable transport services without the undesirable overhead of TCP, which is the transport layer protocol, used in wired networks. It includes the following features: This results in a lightweight protocol more suitable for implementation in “thin” clients (such as wireless/mobile devices) and over low-bandwidth wireless links. It includes the following features: Optional user-to-user reliability/


©2009 Fujitsu Network Communications Migrating the Core The Evolution of the Backhaul Network to Enable Wireless Data Services.

Mobile Provider Mobile Provider Backhaul Provider BSC RNC S-GW Backhaul Provider Ethernet LAG Multi-chassis LAG G.8031 Ethernet network protection COE provides 50ms dedicated network protection for 5-9’s availability Variety of scenarios and requirements Client protection Single and multi-chassis LAG Network protection G.8031 Server layer protection Backhaul provider / client network is unprotected ITU-T G.8031 Ethernet Linear Protection Dedicated 1/


Mobile Systems Presented by: Eddy & Kevin Directed by: Professor Joung.

IP traditionally makes next-hop decisions based on the IP address of the destination, but it is now modified to tunnel packets to a mobile node at it’s current point of attachment to the Internet. Network Layer Consideration Tunneling A tunnel is the path followed by a first packet while it is encapsulated within the payload portion of a second packet. A/


© 2007 Cisco Systems, Inc. All rights reserved.Presentation_ID 1 Cisco Public Cisco and the Service Provider IP Next-Generation Networks (IP NGN) Journey.

IM Routing Multicast Security QoS Availability Performance Resilience Interworking Service Aware L2/L3 VPN Parlay/BEEP/JAIN Resource Manager Identity and Mobility Management Service Policy and Resource Management Session and Media Management Operational Layer Intelligent Networking Application Layer Service Layer Network Layer Cisco Service Exchange Framework © 2007 Cisco Systems, Inc. All rights reserved.Cisco PublicPresentation_ID 11 Cisco Service Exchange Framework Application Convergence Intelligent/


Computer Networks - Network Layer

way no overhead should be incurred when at home Computer Networks - Network Layer Computer Networks - Network Layer How to Handle Mobility Sender Home agent Foreign agent Mobile host register He is here care-of-address Packet for mobile host (tunneling) care-of-address Packet for mobile host Computer Networks - Network Layer Computer Networks - Network Layer Gratuitous ARP Router at home’s LAN Home agent Mobile Host Packet for mobile host (about to move) gratuitous ARP ARP Query Packet/


1 Mobility Management in Sensor Networks Muneeb Ali †‡, Thiemo Voigt ‡, and Zartash Uzmi † † LUMS, Pakistan ‡ SICS, Sweden.

underlying techniques do ● Apply, change and adapt to the peculiarities of sensor networks Reference: Philip Lewis, ICSI Talk, May 2004 5 Towards a Sensor-Net Architecture Power management Mobility management Task management Application layer Transport layer Network layer Data link layer Physical layer Traditional view of the sensor network protocol stack (not strictly enforced) Reference: Ian Akyildiz et al., Survey Paper, IEEE ComMag, Aug 2002 6 Towards a Sensor/


CMPT 771/471: Wireless Networks

) H,F bits: home and/or foreign agent R bit: registration required 6: Wireless and Mobile Networks Mobile IP: registration example 6: Wireless and Mobile Networks Wireless, mobility: impact on higher layer protocols Wireless networks differ from wired networks in Link layer: fading, multipath, hidden terminal Network layer: mobility (users change their network attachment point) Is the transport layer impacted? YES and NO NO: Functionality-wise, Impact is minimal because the best effort service model/


10.1 Schiller Mobile Communications Chapter 10: Support for Mobility File systems Data bases WWW and Mobility WAP (Wireless Application Protocol), i-mode.

SSL/TLS HTML, Java HTTP InternetWAP WAE comprises WML (Wireless Markup Language), WML Script, WTAI etc. Transaction Layer (WTP) additional services and applications WCMP A-SAP S-SAP TR-SAP SEC-SAP T-SAP CEG436: Mobile Computing 24 10.25 WAP - network elements wireless networkfixed network WAP proxy WTA server filter/ WAP proxy web server filter PSTN Internet Binary WML: binary file format for/


ECE537/4 #1Spring 2009 © 2000-2009, Richard A. Stanley ECE537 Advanced and High Performance Networks 4: Implementation Issues with Mobile Networking Professor.

IPv6 complicates sharing of data across different mobile protocols ECE506/4 #4 MANET, etc. ECE506/4 #5 Mobile Networking Issues Virtually all mobile networking involves wireless hosts and/or clients Wireless, in turn, usually means radio links –Sometimes IR Radio links bring their own problems into the mix, and we cannot ignore the effects of these Layer 1 issues on Layers 2 & 3 ECE506/4 #6 WiFi/


Chapter 5 The Network Layer.

The Optimality Principle Shortest Path Routing Flooding Distance Vector Routing Link State Routing Hierarchical Routing Broadcast Routing Multicast Routing Routing for Mobile Hosts Routing in Ad Hoc Networks Conflict between fairness and optimality. Routing Algorithms The routing algorithm is a part of network layer software to decide which output line an incoming packet should be transmitted on. Session routing is a route remains in/


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