563 Hits in 3.8 sec


Mark Stemm, Randy H. Katz
2012 Journal on spesial topics in mobile networks and applications  
We have implemented a vertical handoff system that allows users to roam between cells in wireless overlay networks.  ...  The specific topology of cells and the wide variety of network technologies that comprise wireless overlay networks present new problems that have not been encountered in previous cellular handoff systems  ...  Acknowledgments Thanks go to Hari Balakrishnan, who helped debug some of the kernel enhancements made for faster handoffs.  ... 
doi:10.1023/a:1019197320544 fatcat:eq3b4p2ahng3rlaf7vd5px7ap4

Mobility management across hybrid wireless networks: Trends and challenges

Farhan Siddiqui, Sherali Zeadally
2006 Computer Communications  
handoff solutions for continuous connectivity across wireless access networks. q  ...  In this article, we focus on handoff management.  ...  Vertical handoffs are Fig. 1 . 1 Wireless Overlay Networks.  ... 
doi:10.1016/j.comcom.2005.09.003 fatcat:y5yxzbqbyzaknp35yi66aekpra

Implementation of Vertical Handoff Algorithm between IEEE 802.11 WLAN & CDMA Cellular Network

Vidya s. Pande Vidya s. Pande
2013 IOSR Journal of Electronics and Communication Engineering  
This process of changing a connection from one IP address to another one in IP network is called handoff. Vertical handoff is switching from one network to another while maintaining the session.  ...  These services require various networks (such as CDMA2000 and Wireless LAN) to be integrated into IP-based networks, which further require a seamless vertical handoff to 4 th generation wireless networks  ...  Usually heterogeneous networks are overlay network and most of the vertical handoff schemes are based on the overlay network format.  ... 
doi:10.9790/2834-0635762 fatcat:aq5dgp7pc5h6jaqc4jyorycmiq


A.K.Kavitha *1, Vanitha R2
2020 Zenodo  
Recently, a number of wireless communication technologies are migrating toward heterogeneous overlay networks.  ...  Comparably, a more seamless VHO can be expected in the tightly coupled networks, where the handoff execution follows the protocols of cellular network conditions.  ...  One of the major concerns in heterogeneous wireless networks is to give the support of robust vertical handoff/handover.  ... 
doi:10.5281/zenodo.3692940 fatcat:las2bksgmrgwnkuda32aft33vq

A Novel Fuzzy Logic Vertical Handoff Algorithm with Aid of Differential Prediction and Pre-Decision Method

L. Xia, L.-g. Jiang, C. He
2007 2007 IEEE International Conference on Communications  
In this paper, we propose a novel vertical handoff decision algorithm for overlay wireless networks consisting of cellular and wireless local area networks (WLANs).  ...  Simulation results show that the proposed algorithm can reduce the call-dropping probability as well as unnecessary handoffs in heterogeneous network environments.  ...  CONCLUSIONS In this paper, we have presented an intelligent vertical handoff algorithm in heterogeneous wireless networks.  ... 
doi:10.1109/icc.2007.939 dblp:conf/icc/XiaJH07 fatcat:ws65xjr3qnfptbomvxpcncwytq

Multiservice Vertical Handoff Decision Algorithms

Fang Zhu, Janise McNair
2006 EURASIP Journal on Wireless Communications and Networking  
Future wireless networks must be able to coordinate services within a diverse-network environment.  ...  One of the challenging problems for coordination is vertical handoff, which is the decision for a mobile node to handoff between different types of networks.  ...  The top view of a typical 3G network overlay environment is shown in Figure 5 , where three networks of different maximum data rates coexist in the same wireless service area.  ... 
doi:10.1155/wcn/2006/25861 fatcat:bxovdox4bjgwlhpkohckspiasm

Performance of Adaptive Hysteresis Vertical Handoff Scheme for Heterogeneous Mobile Communication Networks

Yung-Fa Huang, Hsing-Chung Chen, Hung-Chi Chu, Jiun-Jian Liaw, Fu-Bin Gao
2010 Journal of Networks  
This paper studies the performance of adaptive vertical handoff schemes for overlay WCDMA and wireless LAN (WLAN) heterogeneous networks.  ...  Moreover, the proposed AHVH scheme can reduce the ping-pong handoff rate as well. Index Terms-WCDMA; WLAN; heterogeneous networks; hysteresis vertical handoff; adaptive hysteresis vertical handoff  ...  This work was supported in part by a grant under Grant No. NSC 98-2221-E-324 -009.  ... 
doi:10.4304/jnw.5.8.977-983 fatcat:b7kycxm6krgr3extp2w6maqrge

Scalability in Vertical Handoff for Wi-Fi and Bluetooth Networks

G GChitkote, D M Bhalerao
2013 International Journal of Computer Applications  
This paper represents vertical handoff between Wi-Fi and Bluetooth wireless network.  ...  Vertical Handoff techniques deal with the scenario in which the mobile node can move between different network access technologies.  ...  The upward vertical handoff is a handoff to a wireless overlay with a larger cell size and lower bandwidth.  ... 
doi:10.5120/13429-1125 fatcat:b2nr4e2mxng5rmxpkn7c7qmcdm

Vertical Handover Decision Algorithm Based On Several Specifications in Heterogeneous Wireless Networks

In this paper, we recommend boosted vertical handover decision algorithm based upon several standards in the heterogeneous wireless network.  ...  Vertical handoff takes place when a mobile incurable button from one network to one more (e.g., from WLAN to CDMA 1xRTT).  ...  A much higher vertical handoff is actually a handoff to a wireless overlay along with a much bigger tissue size and also minimized data transfer.  ... 
doi:10.35940/ijitee.i8120.078919 fatcat:6teokuv4yzhyvg3schww7l5ixi

Resource Sharing in an Integrated Wireless Cellular/WLAN System

Enrique Stevens-Navarro, Vincent W. S. Wong
2007 2007 Canadian Conference on Electrical and Computer Engineering  
The admission algorithms consider new connection requests, requests due to either horizontal handoff or vertical handoff.  ...  The integration of cellular networks and Wireless Local Area Networks (WLANs) aims to take advantage of the coverage-complementary characteristics of both wireless networks.  ...  INTRODUCTION The architecture for the next generation of wireless networks aims to integrate cellular networks and Wireless Local Area Networks (WLANs).  ... 
doi:10.1109/ccece.2007.162 fatcat:apnescp3sbbbxhhr4jm46yeg5m

Load balancing for cellular/WLAN integrated networks

Wei Song, Weihua Zhuang, Yu Cheng
2007 IEEE Network  
The interworking between heterogeneous third-generation cellular networks and wireless local area networks is one promising evolution approach to fourth-generation wireless networks, which can exploit  ...  A two-phase control strategy is adopted in the load balancing policies, in which call assignment is used to provide a statistical quality of service guarantee during the admission phase, and dynamic vertical  ...  No vertical handoff from the cell to the overlaying WLAN is considered, since this handoff is not necessary to maintain a connection.  ... 
doi:10.1109/mnet.2007.314535 fatcat:vay6fsdnx5bwlflz2vzi55ddgy

Handoff Triggering and Network Selection Algorithms for Load-Balancing Handoff in CDMA-WLAN Integrated Networks

Jang-Sub Kim, Erchin Serpedin, Dong-Ryeol Shin, Khalid Qaraqe
2008 EURASIP Journal on Wireless Communications and Networking  
This paper proposes a novel vertical handoff algorithm between WLAN and CDMA networks to enable the integration of these networks.  ...  The proposed vertical handoff algorithm assumes a handoff decision process (handoff triggering and network selection). The handoff trigger is decided based on the received signal strength (RSS).  ...  ACKNOWLEDGMENTS This work was supported in part by the Korea Research Foundation and Qatar National Research Foundation (QNRF) through an NPRP grant.  ... 
doi:10.1155/2008/136939 fatcat:6elraxpjsfetnm2g7g2mu3ouqq

Optimization of Vertical Handoff Decision Algorithm for Wireless Networks

Elias Aruna, R.S. Moni
2014 International Journal of Computers Communications & Control  
In the literature, vertical handoff algorithm is developed in different directions.  ...  There are some related researches on similar problem in two-tier hierarchical cellular networks, in which small size microcells overlay with large macro cells.  ...  of Vertical Handoff Decision Algorithm for Wireless Networks 221 in a region.  ... 
doi:10.15837/ijccc.2012.2.1404 fatcat:bitdansbzfdq7jyigokn442tqm

On the design of mobility management scheme for 802.16-based network environment

Chun-Chuan Yang, Chun-Shian Tsai, Junn-Yen Hu, Tzu-Chien Chuang
2007 Computer Networks  
To provide more efficient vertical handoff, a novel protocol called speed-based vertical handoff scheme (SVH) is proposed.  ...  In the second paradigm, by comparing with traditional overlay networks (e.g.  ...  Deployment of the extension is called the paradigm of ''802.16e/802.11 overlay network environment'' in the paper. As in traditional overlay networks (e.g.  ... 
doi:10.1016/j.comnet.2006.10.007 fatcat:cvdit7nokremthwex7att3puhe

A framework of handoffs in wireless overlay networks based on mobile IPv6

Cheng Wei Lee, Li Ming Chen, Meng Chang Chen, Yeali Sunny Sun
2005 IEEE Journal on Selected Areas in Communications  
In this paper, we discuss the issues related to handoffs including horizontal and vertical handoffs.  ...  Index Terms-Hierarchical mobile IPv6 (HiMIPv6), horizontal handoff, mobile IPv6, quality-of-service (QoS), vertical handoff, wireless local area network (WLAN).  ...  In Section III, we specify a loosely coupled WLAN-WAAN network architecture for seamless handoffs in a wireless overlay network based on Mobile IPv6.  ... 
doi:10.1109/jsac.2005.856833 fatcat:oebei5nl7jhhpbrvk267iunije
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