Femtocells have been considered as a promising technology to provide better indoor coverage and spatial reuse gains in the last few years. Femtocells are low power, low cost and user deployed wireless access points that use local broadband connectio
当用户从Femtocell切换到Macrocell时，可能存在不必要的切换，且3GPP协议推荐的切换流程可能会引起较大的DL SIT(DownLink Service Interruption Time)和包丢失率。为此，提出一种优化的切换方法，既可以减少不必要切换，又可实现无缝切换。即切换执行前首先判断是否为不必要切换，如果是不必要切换，则目标基站拒绝本次切换，且推荐一个候选切换小区。同时原目标小区和候选目标小区分别调整切换相关参数。否则允许本次切换，且当切换过程激活后，服务网关将数据同时发送
