A channel preemption and time-threshold based channel allocation scheme for vertical handoff in heterogeneous networks

Qiang Zheng, Xin Su, Jie Zeng, Li Liu, Yujun Kuang, Xibin Xu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a channel preemption and time-threshold based channel allocation scheme is presented. The main idea of the new scheme is based on the priority of the call and the channel preemption. Depending on whether it is a new call and the elapsed time of the ongoing call, the call is divided into different types. When a high-priority call proposed channel preemption request, other calls of low priority which meet preemption conditions may be forced to vertical handoff or dropped. The network performance in terms of the blocking and dropping probability of the call, the Grade of Service cost function of the system and the channel utilization of the system are calculated, The results indicates that our scheme can effectively reduce the dropping probability of high-priority calls and the value of Grade of Service cost function.

Original languageEnglish
Title of host publicationProceedings - 4th International Conference on Intelligent Systems, Modelling and Simulation, ISMS 2013
Pages451-455
Number of pages5
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event4th International Conference on Intelligent Systems, Modelling and Simulation, ISMS 2013 - Bangkok, Thailand
Duration: 29 Jan 201331 Jan 2013

Publication series

NameProceedings - International Conference on Intelligent Systems, Modelling and Simulation, ISMS
ISSN (Print)2166-0662
ISSN (Electronic)2166-0670

Conference

Conference4th International Conference on Intelligent Systems, Modelling and Simulation, ISMS 2013
Country/TerritoryThailand
CityBangkok
Period29/01/1331/01/13

Keywords

  • channel preemption
  • priority
  • time-threshold
  • vertical handoff

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