Modelling restricted accessibility for wireless multi-service systems

  • Authors:
  • Villy B. Iversen

  • Affiliations:
  • Technical University of Denmark, Kgs. Lyngby, Denmark

  • Venue:
  • EURO-NGI'05 Proceedings of the Second international conference on Wireless Systems and Network Architectures in Next Generation Internet
  • Year:
  • 2005

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Abstract

Some fundamental aspects of restricted availability and accessibility for multi-rate traffic are clarified. In classical teletraffic models all connections have the same bandwidth demand. In service-integrated systems each service has individual bandwidth requirement. For example in CDMA systems we may experience blocking (outage) even if the nominal capacity of a cell has not been fully used, because the actual capacity depends on interference from neighboring cells. Therefore, calls will experience individual accessibility. This paper presents a new theory and model for this problem. The model preserves the reversibility and insensitivity and generalizes the basic knowledge of classical teletraffic models. The theory is illustrated by a WCDMA traffic model.