We are seeing demand for broadband services is continuously exploding. So, mobile wireless networks must expand greatly their
capacities. Here we are reviewing the economic and technical challenges associated with wireless networks to meet this exploding
demand. The paper first reviews a brief technical background on mobile wireless networks and these basic methods to deepen
their capacity. We can divide the Methods of capacity expansion into three general categories: the deployment of more radio
spectrum; more intensive geographic reuse of spectrum; by increasing the capacity of each MHz of spectrum within a given
geographic area. We find that without significantly increased allocations of spectrum, wireless capacity expansion will be wholly
inadequate to accommodate expected demand growth