Smart Phone and Next Generation Mobile Computing

320 Smart Phone and Next-Generation Mobile Computing

an incentive to offer QoS. In reality, many ISPs that operate an IP

backbone network choose to simply provide more network capac-

ity (as known as overprovision) to avoid any packet loss and traffic

degradation, largely due to the fact that the cost to deploy fibers

has dropped in recent years. Some access network ISPs leverage

QoS techniques to impose resource limitations instead of provid-

ing QoS. The situation of slow QoS deployment may change when

more resource-intensive applications begin to surface and eventually

dominate network traffic.

5.7.2 End-to-End QoS Support in Mobile Computing

Providing QoS in wireless networks is significantly different and far

more challenging than in wired networks. ...