A Dynamic Load Balancing in Wireless CDMA Cellular Networks
Abstract: With the increase of cullular users the traffic hot spots
and unbalanced call distributions are common in wireless networks. The CDMA
techniques enable a base tranceiver station to connect microcells with optical
fibers and to control the channels by sectorizing the microcells. Each sector
which covers several microcells is assigned a soft capacity. To solve the load
balancing among microcells we need to sectorize the microcells dynamically depending
on the traffic required in each cell.
The load balancing problem is
formulated as an integer linear program which minimizes the unserved traffics
and handoff calls in the network. Genetic algorithms are developed to solve
the problem and computational results are discussed by comparing with other
methods.