A channel borrowing scheme in a cellular radio system with guard channels and finite queues

We study a channel borrowing scheme applied in a cellular radio (personal communication) system where call queueing and cutoff priority for handoff calls, which can improve the system performance, are also considered. Because the trade-off between the new call blocking probability and the forced termination probability, we heuristically define a cost function, which is a linear combination of the new call blocking probability and the forced termination probability, to find optimal system parameters of the new call queue length, the handoff queue length, and the number of guard channels. The simulation results indicate that the channel borrowing scheme with finite queueing and guard channels can further increase the system capacity.