Eliminating the boundary effect of a large-scale personal communication service network simulation
ACM Transactions on Modeling and Computer Simulation (TOMACS)
CDMA: principles of spread spectrum communication
CDMA: principles of spread spectrum communication
Adaptive closed-loop power control with quantized feedback and loop filtering
IEEE Transactions on Wireless Communications
Performance analysis of soft handoff in CDMA cellular networks
IEEE Journal on Selected Areas in Communications
Capacity design and performance of call admission control in cellular CDMA systems
IEEE Journal on Selected Areas in Communications
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In this paper, a capacity acquisition protocol is proposed for channel reservation in CDMA networks. Under this protocol, a cell is virtually divided into three regions (i.e., inner region, forced handoff region, and active handoff region). A new call in the active handoff region works in soft handoff mode upon its admission, while a new call in the inner and forced handoff regions works in single mode. However, in the forced handoff region, calls working in single mode can be forced into soft handoff mode, when extra capacity is needed by soft handoff calls. As a result, no explicit channel reservation is required before a call enters soft handoff. By adjusting the size of the forced handoff region, the capacity acquisition can adapt to traffic load and guarantee a desired call dropping probability. To evaluate the capacity acquisition protocol, an analytical model is derived and is also validated through computer simulations. Numeric results illustrate that the capacity acquisition protocol significantly reduces the call dropping probability.