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- Handover (Handoff) Failure
- would you poease tell me the possible all causes of HandoverHandoff failures in GSM neworkLet see, there is the followingSystem FailureProtocol ErrorData Missing in positionTarget unreachableLocation request abortfacility not supportedInter-BSC handover ongoingIntra-BSC completeCongestionand unspecifiedthank u Mr Jim for providing me with this preciousknowledge.--Shekhar
- Tags: Handover
- Q&A 2006-04-17
- A Seamless Handover Mechanism for IEEE 802.16e Broadband Wireless Access
- Handover is one of the most important factors that may degrade the performance of TCP connections and real-time applications in wireless data networks. This paper developed a loss-free handover scheme called LPM Last Packet Marking for IEEE 802.16e-based broadband wireless access networks. By integrating MAC and network layer handovers efficiently,...
- Tags: Seoul National University, Network, Broadband Wireless, Broadband, TCP, IEEE, Wireless Access, Handover, Tcp/Ip, Broadband Internet, Telecommunications, Wireless, Networking
- White papers 2005-02-28
Additional Resources
- A Cross-Layer Based Handover for TCP Applications
- In a mobile communication scenario handover functions must be supported in order to keep connection alive switching between different points of access. Moreover, if the infrastructure is composed of different networks or technologies, intersegment handover is necessary to roam from a component to another. The handover function is implemented either...
- Tags: Network, TCP, Mobile Communication, IEEE, Network Connection, Tcp/Ip, Networking, Cellular Phones, Consumer Electronics, Personal Technology
- White papers 2007-01-18
- Secured Seamless Convergence Across Heterogeneous Access Networks
- Dual-mode handsets and multimode terminals are generating demand for solutions that enable convergence and seamless handover across heterogeneous access networks. The IEEE 802.21 working group is creating a framework that defines a Media Independent Handover Function MIHF, facilitates the handover across heterogeneous access networks and help mobile users to experience...
- Tags: Microsoft Access, Performance, Network, Columbia University, Convergence, Performance Management, VOIP, Networking, Human Resources, Workforce Management, Telecommunications
- White papers 2006-04-03
- Intersystem Handover Simulation
- With the introduction of digital cellular mobile networks, such as GSM, mobile telephone users experienced the freedom of traveling and always being connected. Even with a call in progress it is now possible to move from one radio cell into another without the call being interrupted. The action of switching...
- Tags: Mobile, Call, Data Connection, Radio, Advertising & Promotion, Marketing
- White papers 2005-05-26
- Performance of an Overlay Bluetooth-WiFi Network With Vertical Handover
- The performance of an overlay Bluetooth and IEEE 802.11b WiFi network is considered in terms of QoS parameters, that is packet latency and throughput, in the presence of a vertical handover procedure. The objective of the overlay network is to maximize the QoS allowing the possibility for a mobile to...
- Tags: QoS, Performance, Network, Performance Management, Networking, Human Resources, Workforce Management
- White papers
- Fast Handover Based on Mobile IPv6 for Wireless LAN
- Mobile networking technology is progressing to support the requirements of new class of Internet users who roam about with sophisticated mobile computers and digital wireless data communication devices. Host mobility requires change in the routing protocol so that packets for a moving host can be delivered to their correct destination....
- Tags: LAN, Mobile, Mobility, WLAN, IP, Wireless, Mobile Networking Technology, Advertising & Promotion, Network Technology, Networking, Marketing
- White papers 2007-02-23
- Fast Handover Using Explicit Multicast for IPv6-Based Wireless LAN Networks
- This thesis is devoted to improve the service performance for the multimedia traffics in wireless LAN networks. Review of TCP/IP model and Wireless LAN are conducted. An abstract model of network mobility framework is achieved based on investigating the state of art of mobility support. By the analysis of this...
- Tags: IPv6, Network, Mobility, WLAN, Wireless LANs, LANs, Wi-Fi, Wireless, Networking
- White papers 2005-07-01
- Mobile IPv6 and Some Issues for QoS
- In this paper, the advantages of IPv6 for mobility are given and the Mobile IPv6 protocol is overviewed. Then the paper introduces some issues about QoS support in mobile IPv6 such as fast handover, smooth handover and mobility managements. Since the provisions in the existed QoS architectures such as InterServ...
- Tags: QoS, Mobile
- White papers
- Modelling the GSM Handover Protocol in CommUnity
- CommUnity is a formal approach to software architecture. It has a precise, yet intuitive mathematical semantics based on category theory. It supports, at the methodological level, a clear separation between computation, coordination, and distribution including mobility. It provides a simple state-based language for describing component behaviour that is inspired by...
- Tags: Community, GSM, Cellular Phones, Consumer Electronics, Personal Technology
- White papers 2005-02-25
- QoS-Enabled Internet-on-Train Network Architecture: Inter-Working by MMP-SCTP Versus MIP
- Internet-on-the-train is a rising concept in the last few years. Several trials in different countries have proved the feasibility of offering Internet access to train commuters, but none of them combines broadband access, scalability, seamless handover and quality of service guarantees in one solution. This paper proposes a new architecture...
- Tags: QoS, Broadband Wireless, Broadband, Mobility, Internet-on-the-train, Broadband Internet, Telecommunications, Network Technology, Wireless, Networking
- White papers 2007-05-10
- Performance Evaluation of Voice Handovers in Real 802.11 Networks
- This paper looks at the performance of 802.11 networks for real-time voice communication. In particular, the focus is on triggering timely handovers of voice calls from the 802.11 network to the cellular infrastructure. An algorithm is devised that uses link layer, IP, and application measurements to determine when best to...
- Tags: Algorithm, IEEE 802.11, Performance, Network, Voice, Performance Evaluation, Wireless LANs, Wi-Fi, Performance Management, Wireless, Networking, Human Resources, Workforce Management
- White papers
- Experiences With Heterogeneous Wireless Networks, Unveiling the Challenges
- The integration of heterogeneous wireless networks is one of the most important features that are needed for the future deployment of new wireless technologies such as 4G mobile systems. However, the designers of these systems are also committed to using Internet Protocol IP as their core network infrastructure. Thus, support...
- Tags: University Of Cambridge, Network, Mobility, Wireless Network, Wi-Fi, Wireless, Networking
- White papers
- NEC's Activities for Developing Business Solutions and Technology Needed for a Ubiquitous Society
- This paper describes the prospect of a ubiquitous society and the concept of the ubiquitous system on which it is based. Integrating ubiquitous networks and ubiquitous computers, the system, will provide many application services, some of which are introduced in this paper. This paper also explains the basic technologies needed...
- Tags: NEC Corp., RFID, Networking, Telecommunications, Middleware, Wireless, Security, Biometrics, Enterprise Software, Software
- White papers 2004-09-28
- Comparison of Available Bandwidth Estimation Techniques in Packet-Switched Mobile Networks
- The relative contribution of the transport network towards the per-user capacity in mobile telecommunication systems is becoming very important due to the ever increasing air-interface data rates. Thus, resource management procedures such as admission, load and handover control can make use of information regarding the available bandwidth in the transport...
- Tags: Estimation, Technique, Bandwidth, IEEE, Productivity, Telephony, Telecom & Utilities, Telecommunications, Networking
- White papers 2006-06-12
- Intel integrates Wi-Fi/WiMAX seamless switchover on mobile devices
- Intel added another milestone to its WiMAX plans with the unveiling of a Wi-Fi/WiMAX combo chip at the Mobile World Congress. An excerpt from InformationWeek: The idea behind the research is to develop technology that would enable a mobile Internet device to switch between networks as...
- Tags: Mobile, Mobile Device, Intel Corp., WiMAX, Wi-Fi, Wireless, Advertising & Promotion, Marketing, Arun Radhakrishnan
- Blog posts 2008-02-13
- Compaq Presario 5304 hard drive
- How can I get an old Compaq Presario 5304 to recognize a 49GB hard drive?does it have pci slots? get a Promise controller that will work with your drive...PROBLEM IS UR BIOS IS TO OLD U CAN TRIE TO UPDATE BIOS BY FLASHING IT OR GET A EXPANSION CARD WITH...
- Tags: Compaq Computer Corp., Compaq Presario, Compaq Presario 5304, hard drive, hardware, HDD, james.dold@..., POSTER
- Q&A 2005-08-22
- Architecture of a Vehicle Communication Gateway for Media Independent Handover
- Communication within and from a vehicle is a key function for various vehicle applications, like telematics, logistics, and traffic control applications. This paper describes the flexible and extendable architecture of a vehicle communication gateway which acts as a central communication device embedded in the vehicle and managing the in-vehicle, inter-vehicle,...
- Tags: Gateway Inc., Aachen University, Media, Communication, Supply Chain, Internet, Manufacturing, Networking, Business Operations
- White papers 2006-08-30
- Voice over WLAN (VoWLAN) - A Wireless Voice Alternative?
- Voice over WLAN VoWLAN is a natural evolution of VoIP. It is also a potential supplement or a potential competitor to 3G mobile systems. This paper presents an overview of WLAN technologies and the issues that are relevant for voice communication over WLAN. The basic IEEE 802.11 mechanisms are described,...
- Tags: Voice, WLAN, Wireless LANs, LANs, Wi-Fi, Wireless, Networking
- White papers 2006-05-03
- Broadband Wireless Communication in Vehicles
- In order to provide high-bit-rate interactive multimedia services to fast-moving mobile users, one has to reuse the limited radio spectrum as efficiently as possible. This is made possible by using a cellular network with very small cells resulting in a high reuse factor of the frequency spectrum. This will result...
- Tags: Broadband Wireless, Broadband, Broadband Internet, Telecommunications, Wireless
- White papers 2005-10-13
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