A utility-based load-balancing scheme with guarantee of users' rate for LTE self-organization networks

作者：Yang Ying^*; Dong WenXiang; Chen XiaoHui; Wang Weidong

来源：International Journal of Network Management, 2013, 23(3): 172-185.

DOI：10.1002/nem.1824

Mobility load balance is becoming increasingly crucial in the design of self-organization networks for LTE (long-term evolution), especially under dynamic scenarios. In this paper, we study the problem of load balance with guarantee of users' rate and formulate a general optimization model, where the weighted sum of the first-order and second-order statistics of load distribution (load variance and total load level) are considered directly. We prove the convexity of the model and derive the optimal user-station association scheme in different weights. Based on analysis of the optimization model, a dynamic admission and handover scheme is proposed. Mobile users with rate requirement select a base station based on the load utility in a distributed way and handover to the selected station (if handover is triggered). Furthermore, a simulation platform with seven cells is developed to evaluate the dynamic admission and handover scheme. It is demonstrated that our proposed scheme outperforms the conventional counterpart.

• 出版日期2013-6
• 单位中国科学技术大学