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Combined CAC and Forced Handoff for Mobile Network Performability

机译：CAC和强制切换相结合，可提高移动网络的性能

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In mobile networks, call admission control (CAC) is widely used in reaching of the quality of service (QoS) requirements. However, as the CACs schemes give priority to the handoff calls, the blocking probability is degraded. In this paper we propose a new scheme which is based on the combinaison of CAC scheme and load sharing policy between a cluster of surrounding cells. Our scheme forces some calls to handover, with conditions, to neighboring cells in order to avoid the blocking states in the serving cell. Thus we prove, in the case of one cell, that our scheme permits to improve both the dropping and blocking probabilities. We use multidimensional's Markov chains to model the systems because of the consideration of occupation and failure/reparations of channels. Therefore, it is difficult to deduce intuitively the relevance of our scheme versus others in the literatures. So. we apply a mathematical method based on stochastic comparisons in other to prove that our scheme provides better performance measures. We illustrate these proofs by numerical results in order to show the relevance of our mechanism to improve QoS of mobile networks.
机译：在移动网络中，呼叫准入控制（CAC）被广泛用于达到服务质量（QoS）要求。但是，由于CAC方案将优先权给予切换呼叫，因此阻塞概率降低了。在本文中，我们提出了一种新的方案，该方案基于CAC方案和周围小区群集之间的负载分担策略的组合。为了避免服务小区中的阻塞状态，我们的方案在一定条件下强制进行一些呼叫，以进行有条件的切换。因此，我们证明了在一个单元的情况下，我们的方案可以改善丢包率和阻塞率。考虑到信道的占用和故障/修复，我们使用多维的马尔可夫链对系统进行建模。因此，很难直观地推断出我们的方案与文献中其他方案的相关性。所以。我们在其他方面应用了一种基于随机比较的数学方法，以证明我们的方案提供了更好的性能指标。我们通过数值结果来说明这些证明，以显示我们的机制改善移动网络QoS的相关性。

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