A dynamic location management scheme for next-generation multitier PCS systems

  • Authors:
  • I. F. Akyildiz;W. Wang

  • Affiliations:
  • Broadband & Wireless Networking Lab., Georgia Inst. of Technol., Atlanta, GA;-

  • Venue:
  • IEEE Transactions on Wireless Communications
  • Year:
  • 2002

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Abstract

Global wireless networks enable mobile users to communicate regardless of their locations. One of the most important issues is location management in a highly dynamic environment because mobile users may roam between different wireless systems, network operators, and geographical regions. A location-tracking mechanism is introduced that consists of intersystem location updates and intersystem paging. Intersystem update is implemented by using the concept of boundary location area, which is determined by a dynamic location update policy in which the velocity and the quality of service are taken into account on a per-user basis. Also, intersystem paging is based on the concept of a boundary location register, which is used to maintain the records of mobile users crossing the boundary of systems. This mechanism not only reduces location-tracking costs, but also significantly decreases call-loss rates and average-paging delays. The performance evaluation of the proposed schemes is provided to demonstrate their effectiveness in multitier personal communication systems