【摘要】 WCDMA系统是一个干扰受限的系统,负载上升将导致干扰急剧增大。当一个新用户接入时,也将对整个系统引入新的干扰源,使得其他用户的功率改变,从而造成干扰进一步改变。因此,如果能较为准确地度量一个新增用户对系统的干扰影响,那么就可以判定当前的负荷是否已经接近系统的一个极限范围,从而决定是否再允许新用户接入,使系统能够维持在一个稳定的状态,以不至于崩溃。提出一种自适应的负荷预测算法,利用实际系统中负荷分布的周期性的特性,自动地调整测算各小区在不同的时段的负荷因子,达到准确预测负荷容量的目的。实验结果表明该算法能够针对不同时段的网络特性,较为准确地预测负荷的增加情况,能针对性地控制负荷增长。更多还原

【Abstract】 WCDMA is an interference-limited system.The increase of load will result in the increment of the interference.When a new user tries to access the Wireless network a new interference source will be added into the system and make the other users to increase their power for overcoming the increment of interference.It’s important for us to forecast the load before the new user accesses the network.We can decide whether the load will be beyond the limit or not and control the real load by allowing the user or not.And the whole system can stably work.In this paper we propose an adaptive load forecast algorithm,which can automatically modify the load factor for a new user or several users’ arrival,due to the periodicity of load in the real WCDMA system.So we can utilize this characteristic for forecasting each increment of load in the different time slot.更多还原