[논문]Handoff Management for Mobile Devices in Hybrid Wireless Data Networks

Inayat Riaz; Aibara Reiji; Nishimura Kouji

doi:10.1109/jcn.2005.6387759

Handoff Management for Mobile Devices in Hybrid Wireless Data Networks 원문보기

Journal of communications and networks, v.7 no.1, 2005년, pp.76 - 86

Inayat Riaz (Graduate School of Engineering, Hiroshima University) , Aibara Reiji (Information Media Center, Hiroshima University) , Nishimura Kouji (Information Media Center, Hiroshima University)

Abstract ▼ AI-Helper

Today's wireless access networks consist of several tiers that overlap each other. Provisioning of real time undisrupted communication to mobile users, anywhere and anytime through these heterogeneous overlay networks, is a challenging task. We extend the end-to-end approach for the handoff management in hybrid wireless data network by designing a fully mobile-controlled handoff for mobile devices equipped with dual mode interfaces. By handoff, we mean switching the communication between interfaces connected to different subnets. This mobile-controlled handoff scheme reduces the service disruption time during both horizontal and vertical handoffs and does not require any modification in the access networks. We exploit the IP diversity created by the dual interfaces in the overlapping area by simultaneously connecting to different subnets and networks. Power saving is achieved by activating both interfaces only during the handoff period. The performance evaluation of the handoff is carried out by a simple mathematical analysis. The analysis shows that with proper network engineering, exploiting the speed of mobile node and overlapping area between subnets can reduce service disruption and power consumption during handoff significantly. We believe that with more powerful network interfaces our proposal of dual interfaces can be realized.

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문제 정의

To increase the overlapping area we prolong the data link layer handoff on a single interface until the threshold is less than the carrier detect threshold. In this paper, we discuss only those handoffs that are accompanied by change of IP address, i.e., between subnets for WLAN and between GPRS systems owned by different cellular operators.

가설 설정

. If the MN is in the coverage area of two WLAN subnets and SS > THIwlan, then only one interface will be connected to the WLAN and o나ict will be OFF. However, if SS < THIwlan, then both interfaces will be connected with different subnet prefixes.
Fourth, because of the heterogeneous networks, the signal powers received from the base stations of the different networks are incomparable.

참고문헌 (28)

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상세보기
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상세보기
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DOI : 10.1109/JCN.2005.6387759 [무료]
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