Cell Outage Compensation in LTE Networks: Algorithms and Performance Assessment
Cell Outage Compensation in LTE Networks: Algorithms and Performance Assessment
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DOI：
10.1109/vetecs.2011.5956497
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发表时间：
2011-05
期刊：
影响因子：
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通讯作者：
M. Amirijoo;L. Jorguseski;R. Litjens;L. Schmelz
中科院分区：
文献类型：
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作者：
M. Amirijoo;L. Jorguseski;R. Litjens;L. Schmelz
小区中断补偿是一种自愈功能，因此是移动无线网络自组织网络概念的一部分。它旨在减轻由小区或站点级中断引起的覆盖范围、容量和服务质量的下降。一旦检测到此类中断，小区中断补偿就会在受影响站点周围的小区中调整各种控制参数，例如电气天线倾斜和上行链路目标接收功率电平，以便根据运营商策略最大限度地减少中断引起的性能影响。在本文中，我们概述了小区中断管理框架，提出了具体的补偿算法，并评估了各种场景下所实现的性能效果。报告的模拟结果表明，所提出的补偿算法能够恢复很大比例的用户，否则这些用户将被丢弃，同时仍然在补偿小区中提供足够的服务质量。
Cell outage compensation is a self-healing function and as such part of the Self-Organising Networks concept for mobile wireless networks. It aims at mitigating the degradation of coverage, capacity and service quality caused by a cell or site level outage. Upon detection of such an outage, cell outage compensation tunes a variety of control parameters, e.g., electrical antenna tilt and uplink target received power level, in cells surrounding the affected site, in order to minimise the outage-induced performance effects in accordance with the operator policy. In this paper we outline the cell outage management framework, propose concrete compensation algorithms and assess the achieved performance effects in various scenarios. The reported simulation results show that the proposed compensation algorithm is able to recover a significant percentage of the users that would otherwise be dropped, while still providing sufficient service quality in the compensating cells.