The study of quick download mechanism in an infrastructural wireless environment

Frequent handoff consumes a lot of system capability and signaling resources in a cellular system. A mobile station (MS) moving out of a cell may receive an incomplete message from a broadcast system. In this paper, we present download mechanisms in cellular systems or broadcast systems to support data users to receive the whole packet in time before moving out of the coverage area. Two download strategies: Quick Download using Multi-channel (QDM) scheme and the Quit Download (QUD) scheme are proposed in this study where the efficiencies of the two strategies are compared with the one without particular treatment. Some significant estimations such as the percentage of handoff data users having completed service before leaving the cell, the mean waiting time of non-handoff data users, and the blocking probability of data users are analyzed and compared. The numerical results show that, the QDM strategy is most efficient in reducing the handoff rate, the QUD strategy can assure the waiting time of non-handoff data users. Furthermore, these various strategies do not have serious impact on the blocking probability of data users.