Enhancing QoS support for vertical handoffs using implicit/explicit handoff notifications

Ling Jyh Chen, Guang Yang, Tony Sun, M. Y. Sanadidi, Mario Gerla

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

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 in TCP, TFRC, etc.) have been well designed for mild, gradual rate adjustments required by load fluctuations and network congestion, their response time is inadequate when the rate must be adjusted to the drastic network capacity changes that are typical in vertical handoff scenarios. To expedite the response to such changes, we propose in this paper two adaptive algorithms, named the Fast Rate Adaptation (FRA) and Early Rate Reduction (ERR), that are launched when the handoff is from low to high capacity (LOW-to-HIGH) or from high to low capacity (HIGH-to-LOW), respectively. We also propose two vertical handoff notification mechanisms to work with FRA and/or ERR, i.e. the Implicit Handoff Notification (IHN) and Explicit Handoff Notification (EHN). We show by simulation that our proposed schemes are able to provide better QoS support than the traditional AIMD based schemes during vertical handoffs.

Original languageEnglish
Title of host publicationSecond International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks, Qshine 2005
DOIs
Publication statusPublished - 2005 Dec 1
Event2nd International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks, Qshine 2005 - Orlando,FL, United States
Duration: 2005 Aug 222005 Aug 23

Publication series

NameSecond International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks, Qshine 2005
Volume2005

Other

Other2nd International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks, Qshine 2005
CountryUnited States
CityOrlando,FL
Period05/8/2205/8/23

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Chen, L. J., Yang, G., Sun, T., Sanadidi, M. Y., & Gerla, M. (2005). Enhancing QoS support for vertical handoffs using implicit/explicit handoff notifications. In Second International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks, Qshine 2005 [1551097] (Second International Conference on Quality of Service in Heterogeneous Wired/Wireless Networks, Qshine 2005; Vol. 2005). https://doi.org/10.1109/QSHINE.2005.22