The Channel Borrowing Based Channel Allocation Scheme for Heterogeneous Wireless Networks

A channel allocation scheme on heterogeneous wireless networks was analyzed.By using closed network queuing theory,the channel borrowing scheme was studied for heterogeneous wireless networks in terms of the connection-level QoS.Channel allocation strategy using both horizontal channel borrowing(HCB) and vertical channel borrowing(VCB) was presented and analyzed.Channel borrowing is restricted within handoff requests.To decrease channel interference,only pre-defined channels can be lent.To further improve the system performance,other priority strategies were introduced.The simulation results show that the proposed schemes can lower blocking probabilities and improve system performance.