Simulation Model Design and Execution: Building Digital Worlds
Simulation Model Design and Execution: Building Digital Worlds
Radio Resource Management for Wireless Networks
Radio Resource Management for Wireless Networks
Performance Analysis of GSM Networks with Intelligent Underlay-Overlay
ISCC '02 Proceedings of the Seventh International Symposium on Computers and Communications (ISCC'02)
IEEE Communications Magazine
Teletraffic performance of mobile radio networks with hierarchical cells and overflow
IEEE Journal on Selected Areas in Communications
A design of macro-micro CDMA cellular overlays in the existing big urban areas
IEEE Journal on Selected Areas in Communications
Personal communication systems using multiple hierarchical cellular overlays
IEEE Journal on Selected Areas in Communications
Managing hotspot regions in wireless/cellular networks with partial coverage picocells
Proceedings of the 6th ACM international symposium on Mobility management and wireless access
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Next generation cellular systems are expected to use multilayered, multi-sized cells to cover non-homogeneous populated areas. In this paper, a new method for managing users with different mobility characteristics (slow and fast) in a two-layer cellular structure, through utilizing a combination of overflow and take-back (hand-down) schemes is presented. A novel speed-responsive overflow and hand-down mechanism implemented in a single unified hierarchical channel assignment scheme called O&H-HCA, jointly handles the overflow traffic from lower layer to higher layer and directs the handoff calls to the specific layer dependent on the speed class of the mobile units. Numerical results obtained from comprehensive and detailed teletraffic performance assessment reveal superiority of O&H-HCA over traditional hierarchical schemes.