An M/G/1 retrial queue with two phase service, feedback and possible preemptive resume discipline is considered.

This paper analyses the main expression, namely the forcibly occupying memory and the destroying memory, then points out the social, cultural and political background resulting from the mainstream thought after the foundation of the PR China.

A dynamic channel reservation scheme is proposed for users of the uneven distribution of dynamic systems,making the system can be based on real-time to improve the system s Qos,combined with the preemptive priority channel allocation strategy and new call queuing strategy to improve both handoff and call blocking rate.