Research Of Admission Control Algorithm In Wireless Metropolitan Area Network

As next-generation wireless network technology with great competition, WMAN has focused on many kinds of services with QoS supported. Admission control is veiy important for QoS guarantee. Its main task is to determine whether a new service can be allowed, BS (Base Station) is responsible for whether accepting or refusing these access requests based on bandwidth long period requirement and current network state. Bandwidth resource will be assigned after service request being allowed by network. This bandwidth resource assignment maybe decreases current online services' QoS. But on the other hand, network must allow most service requests' accesses. Then these two scenarios meet a conflict. Admission control is the right method to resolve this conflict. It can remain current online service's QoS while accepting new service requests and can also guarantee most of service requests being admitted. Since WMAN should support four kinds of scheduling services with different QoS, we must design an advanced admission control mechanism for different scheduling services' QoS to guarantee more users' network access and guarantee high quality service be supported while meet QoS of different services.In general mobile network, idle radio resource will be checked before a service request being admitted. If there is enough radio resource...