Handoff Performance of Delay-Insensitive Data Services in DS-CDMA Systems
نویسندگان
چکیده
We investigate the performance of handoff policies for data services and voice services in a DS-CDMA system with respect to delay sensitivity. A slotted ALOHA random access scheme on the reverse link is employed to support data services. A soft handoff policy, hard handoff policy and restricted-transmission policy for data packets in a soft handoff region are compared in terms of throughput, system delay, and system capacity. The soft handoff policy and the restricted-transmission policy yield better performance than the hard handoff policy. The restrictedtransmission policy yields the highest maximum throughput, but the longest delay among the three handoff policies. Thus, it is useful to restrict packet transmission for delay-insensitive data services in the soft handoff region when the traffic load in a cell is high.
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