一种基于双频连接的小小区发现方案

A dual band connection based small cells discovery scheme

在小小区大量部署的异构蜂窝网络中,用户进行异频扫描所检测的载波数相比传统部署场景会大量增加,因此用户能耗也会相应增长。提出一种新的基于双频连接的小小区发现策略,以解决网络边缘用户在进行小小区发现时的能效问题。通过灵活的异频扫描策略,大大减少用户进行异频检测的能量消耗,相对于现有的基于射频指纹数据库的小小区发现方案,该方案实现简单且频谱利用率高。仿真表明,该方案能有效降低用户能耗,提高用户异频扫描有效性,同时避免高速移动用户进行异频扫描。

In the heterogeneous network that small cells largely deployed, the number of carriers that users need to detect when performing inter-frequency scanning compared with the traditional network scenario, exponentially, so it will consume users a lot of energy. This paper proposes a new small cells discovery strategy based on dual band connection, to solve the problems that energy consumption of users in the edge of network. This scheme uses flexible inter-frequency scanning strategy of users, to reduce the energy consumption of the user hen performing inter-frequency scanning. Compared with the existing scheme which based on finger-print database, it is simple, feasible and has high spectrum efficiency. Simulations show that the scheme can effectively reduce the energy consumption of the user, improve effectiveness of inter-frequency scanning, and avoid high speed mobile user performing in-ter-frequency scan.