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The mobility is one of the most important features of a wireless cellular communication system. Usually, continuous service is achieved by supporting handover from one cell to another. Handover is the process of changing the channel (frequency, time slot, spreading code, or their combination of them) associated with the current connection while a call is in progress. Priority handover schemes in wireless mobile network are under consideration. Models of single traffic system, multiple traffic system, multiple traffic system with total priority and traffic system with State Dependent Processor Sharing are considered. Different schemes for handover handling with non-preemptive priorities are compared. The possibility of their modeling with Markov chains is discussed. Two new priority schemes for 4G Next Generation Broadband Wireless Networks are suggested.
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