Results 131 to 140 of about 500 (168)

Vertical handoffs as a radio resource management tool

Computer Communications, 2008
Vertical handoffs occur when a user changes association from one type of wireless access technology to another while maintaining an active session. Much work has been done in ensuring seamless handoffs that also preserve quality of service (QoS). However, network operators can exploit vertical handoffs through dedicated radio resource management (RRM ...
Abd-Elhamid M. Taha, Hossam S. Hassanein, Hussein T. Mouftah   +2 more
openaire   +1 more source

Vertical handoff modeling and simulation in VANET scenarios

2013 International Conference on Wireless Communications and Signal Processing, 2013
In Vehicular ad hoc network (VANET), vehicular users (VUs) are capable of connecting to different access networks for interacting both safety related information and user application related information. In the overlapped area of heterogeneous networks, VUs are allowed to perform vertical handoff between various access networks.
Dawei Mu, Xianlei Ge, Rong Chai
openaire   +1 more source

An Agile Vertical Handoff Scheme for Heterogeneous Networks

2006 ACS/IEEE International Conference on Pervasive Services, 2006
In this paper, on the basis of end-to-end principle, we propose a mobility management scheme to solve the NAT issue. Furthermore, since different communication technologies own different characteristics, during a vertical handoff, a well-behaved mobility management system should adapt an ongoing connection to different communication systems.
Hsung-Pin Chang, Qi-Jen Chen
openaire   +1 more source

The performance of multiple tcp flows with vertical handoff

Proceedings of the 7th ACM international symposium on Mobility management and wireless access, 2009
The performance of an individual TCP flow with a vertical handoff has been studied in several papers. However, the effect of a vertical handoff on multiple TCP flows has been little studied. In this paper we study the behaviour of multiple competing TCP flows with a vertical handoff.
Laila Daniel, Markku Kojo
openaire   +1 more source

Adapting TCP for Vertical Handoffs in Wireless Networks

Proceedings. 2006 31st IEEE Conference on Local Computer Networks, 2006
With the growing use of multi-radio mobile terminals a vertical handoff between different wireless access technologies is becoming increasingly common. The vertical hand-off may result in a significant change in the access link characteristics that can affect the performance of TCP dramatically as its behaviour depends on the end-to-end path properties
Laila Daniel, Markku Kojo
openaire   +1 more source

Vertical Handoff in Heterogeneous Wireless Mobile Networks

2009 First International Conference on Networks & Communications, 2009
The vision of future wireless networks is coexistence of current existing access networks. The different access networks will be bound together into a single network and the Internet Protocol (IP) will be the glue. To fulfill this vision, one of the most challenging parts is to develop sophisticated policies for vertical handovers. When and in what way
Chandravva Hebbi, S. V. Saboji
openaire   +1 more source

Enhancing QoS Support for Vertical Handoffs Using Implicit/Explicit Handoff Notifications

Second International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks (QSHINE'05), 2005
Vertical handoffs between different wireless technologies usually lead to dramatic changes in the link capacity. A successful QoS solution for vertical handoffs must be able to fast track the capacity changes and agilely adapt the delivery rates and qualities of the ongoing applications. Though traditional AIMD-based source adaptation schemes (as found
Ling-Jyh Chen, Guang Yang 0001, Tony Sun, M. Y. Sanadidi, Mario Gerla   +4 more
openaire   +1 more source

Fast and efficient vertical handoffs in wireless overlay networks

2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE Cat. No.04TH8754), 2005
Mobile IP is used to keep track of location information and make the data available to the mobile device anytime, anywhere. It designed to address the macromobility management problem, it does not address microlevel mobility issues such as handoff latency and packet loss.
Hakim Badis, Khaldoun Al Agha
openaire   +2 more sources

An Implementation of Vertical Handoff in Heterogeneous Networks

2009 5th International Conference on Wireless Communications, Networking and Mobile Computing, 2009
With the development of wireless communication technologies and mobile Internet, the demand for the ubiquitous service is increasing dramatically. However, there are many critical issues which prevent the performance in accessing the ubiquitous heterogeneous wireless networks. So the subject has become the focus of many research institutions.
Qinxue Sun, Bo Hu, Shanzhi Chen, Jingjing Zhang   +3 more
openaire   +1 more source

The vertical handoff in heterogeneous wireless networks

2012 IEEE 14th International Conference on Communication Technology, 2012
With the high development of wireless communications, next generation wireless networks must be heterogeneous networks. One of the major design issues is vertical handoff which is the decision for a mobile node to switch from one network to another different type of networks. In this paper, firstly we analyzed two schemes of network discovery and their
null Ting liu, null Lei Zhu, null Xiaoning Zhang, null Yuxi Cheng   +3 more
openaire   +1 more source