摘要
本文针对移动通信蜂窝网固定位置区位置管理中存在的两个主要问题:边界乒乓效应和边界信令集中,提出了一种边界关联位置更新策略,能够在很大程度上抑制乒乓效应,同时,部分平滑了位置区边界的信令负荷.采用随机游走模型和状态转移矩阵理论推导的方法,对本文提出的更新策略与传统位置更新策略进行了分析比较,并通过仿真进一步验证了结果.分析和仿真表明,本文策略不仅相对易于实现,而且极大优化了性能.
This paper proposes a novel strategy called correlated boundaries strategy against the two main problems of location management scheme in cellular networks：Ping-pong location update effect existing between two location areas and concentration of signals at boundaries. This strategy is able to reduce the Ping-pong effect effectively and balance the load of signals at boundaries by adding certain cells as expansions of the new location area, whenever a mobile terminal moves into a cell belongs to a new location area. Using random walk mobility model, the strategy in this paper is compared with conventional strategy and further proved by results of simulation. It is proved by both analysis and simulation that the strategy proposed in this paper is not only easy to implement, but improves the performance greatly.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2006年第4期684-689,共6页
Acta Electronica Sinica
基金
国家自然科学基金(No.60572047)
湖北省青年杰出人才基金(No.2005ABB006)
关键词
移动通信
位置更新
边界关联
乒乓效应
mobile networks
location update
correlated boundaries
ping-pong effect
