Effect of Inter-Cell Inter-Radio Access Technology (RAT) interference on the performance of multi-RAT cellular systems

2014 21st International Conference on Telecommunications (ICT) Pub Date : 2014-05-04 DOI:10.1109/ICT.2014.6845136

Ahmed Alsohaily, E. Sousa

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引用次数: 5

Abstract

Containing interference within cellular communication systems requires the use of dedicated frequency bands to mitigate interference from other wireless systems. Based on this design principle, the Radio Frequency (RF) resources of a multi-Radio Access Technology (RAT) cellular system are apportioned between co-deployed RATs. However, traffic variations within multi-RAT systems result in the suboptimal utilization of RF resources under fixed, system-level spectrum allocation policies. On the other hand, flexible spectrum allocation policies that permit using the same frequency band to deploy different RATs at different locations introduce Inter-cell inter-RAT Interference (IRI). The potential impact of IRI prevents the use of flexible spectrum management techniques that disrupt system-level spectrum allocation in multi-RAT systems. This paper studies the effect of IRI on the performance of multi-RAT cellular systems employing Global System for Mobile Communications (GSM), High Speed Packet Access (HSPA) and Long Term Evolution (LTE). Detailed system level simulations are performed to measure the impact of deploying different RATs at different locations using the same frequency band.

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小区间无线接入技术(RAT)干扰对多小区无线接入系统性能的影响

抑制蜂窝通信系统内的干扰需要使用专用频带来减轻来自其他无线系统的干扰。基于这一设计原则，多无线接入技术(RAT)蜂窝系统的射频资源在共部署的RAT之间进行分配。然而，在固定的系统级频谱分配策略下，多rat系统内的流量变化会导致射频资源的次优利用。另一方面，灵活的频谱分配策略允许使用相同的频带在不同的位置部署不同的rat，从而引入了小区间rat干扰(IRI)。IRI的潜在影响阻碍了灵活的频谱管理技术的使用，从而破坏了多rat系统中的系统级频谱分配。本文研究了IRI对采用全球移动通信系统(GSM)、高速分组接入(HSPA)和长期演进(LTE)的多rat蜂窝系统性能的影响。进行了详细的系统级仿真，以测量使用同一频段在不同位置部署不同的rat的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 21st International Conference on Telecommunications (ICT)

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