基于移动性的自适应算法的性能评估

prevalent underlying theme is the adaptive technique used to control the handover of users. An adaptive handover algorithm developed in [1] takes estimation of vehicle velocity into account. It sets different values of triggering time according to estimated movement. Simulations in [1] suggest that it is simple and useful. It improves performances of communication systems, including rate of ping-pong handover, rate of blocking users and rate of dropping calls. Because of its simplicity and usefulness, performances in other systems and under other propagation models are necessary to be evaluated. Manhattan model is a typical propagation model in 3G systems, so performances evaluation of the proposed scheme under Manhattan model is very necessary. The pilot signal strength in TS0 could be measured to estimate the movement of users, so the scheme could also be evaluated in TD-SCDMA system. This paper aims to evaluate performances of the proposed scheme in TD-SCDMA system and under Manhattan model. The results suggest that it’s useful as well as that in UMTS, but regretfully useless under Manhattan Model for traffic users.