Improving call admission policies in wireless networks
Improving call admission policies in wireless networks
复制标题
改进无线网络中的呼叫准入策略
DOI：
10.1023/a:1019107329380
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
C. Lea
中科院分区：
文献类型：
--
作者：
Chi;C. Lea
众所周知，呼叫准入策略对无线网络的性能有很大的影响。然而，新呼叫和切换呼叫的非线性依赖性使得在有效利用方面寻找更好的呼叫接纳策略成为一项困难的任务。许多关于最优策略的研究都没有考虑到正确的相关性。因此，这些研究中报告的收益无法在真实的网络中得到证实。在本文中，我们开发了一个解决方案，找到更好的呼叫准入政策的问题。该技术由三个部分组成。首先，我们在一个近似的简化模型中搜索策略。其次，我们修改了线性规划技术，用于解决固有的非线性策略搜索问题。第三，我们在精确的、高复杂性的分析模型中验证了所发现的策略的性能。文中所示的结果清楚地证明了所提出的技术的有效性。
It is well known that the call admission policy can have a big impact on the performance of a wireless network. However, the nonlinear dependence of new calls and handoff calls makes the search for a better call admission policy – in terms of effective utilization – a difficult task. Many studies on optimal policies have not taken the correct dependence into consideration. As a result, the reported gains in those studies cannot be confirmed in a real network. In this paper we develop a solution to the problem of finding better call admission policies. The technique consists of three components. First, we search for the policy in an approximate reduced‐complexity model. Second, we modify the Linear Programming technique for the inherently nonlinear policy‐search problem. Third, we verify the performance of the found policy in the exact, high‐complexity, analytical model. The results shown in the paper clearly demonstrate the effectiveness of the proposed technique.