Meeting QoS requirements of mobile computing by dual-level congestion control

Yi Ming Chen, Chih Lun Su

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

1 Scopus citations


As the resources in a wireless network are limited and freely shared by all network users, Call Admission Control (CAC) plays a significant role in providing the Quality of Service (QoS) in wireless networks. However, when the network is congested with too many users, traditional CAC that mainly focuses on the tradeoff between new call blocking probability and handoff call dropping probability cannot guarantee QoS requirements to users. To address this issue, this paper proposes a dual level congestion control scheme which considers not only the call level admission control but also the user's decision to enter the network or not during the network traffic burst interval (we call it as user-level burst control). We adopt the economical terms of externality and introduce a total user utility function to formally model the user's perceived QoS metric. Our simulation shows that the weighted blocking probability (Pb) of our scheme can decreases 70-80% than traditional CAC systems and increase the total user utility to 2-3 times.

Original languageEnglish
Title of host publicationAdvances in Grid and Pervasive Computing - Second International Conference, GPC 2007, Proceedings
PublisherSpringer Verlag
Number of pages11
ISBN (Print)9783540723592
StatePublished - 2007
Event2nd International Conference on Grid and Pervasive Computing, GPC 2007 - Paris, France
Duration: 2 May 20074 May 2007

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4459 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference2nd International Conference on Grid and Pervasive Computing, GPC 2007


  • Call admission control
  • Congestion control
  • Quality of service
  • Utility function
  • Wireless network


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