Suitability of RSRQ measurement for quality based inter-frequency handover in LTE

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI:10.1109/ISWCS.2008.4726147

J. Kurjenniemi, T. Henttonen, J. Kaikkonen

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引用次数: 30

Abstract

The purpose of this paper is to evaluate the suitability of reference signal received quality (RSRQ) measurement for quality based inter-frequency handover in UTRAN long term evolution (LTE). Intra-frequency handovers in LTE are done based on reference signal received power (RSRP) measurements, which should ensure that users are always connected to the cell with the highest received power. However, in certain environments where interference causes service quality degradation for the user (which RSRP measurement is not able to detect) there might be situation where a quality-based measurement would enable better system performance. In this paper, we evaluate the success and correctness of RSRQ based inter-frequency handovers as means for preventing service degradation using dynamic system simulations. However, comparison of RSRQ and RSRP based triggering suggest that RSRQ is not able to provide robust detection of service quality degradation. Furthermore, RSRQ is found to be heavily dependent on current system loading and the measurement strategy.

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LTE中基于质量的频间切换RSRQ测量的适用性

本文的目的是评估参考信号接收质量(RSRQ)测量在UTRAN长期演进(LTE)中基于质量的频间切换中的适用性。LTE中的频内切换是基于参考信号接收功率(RSRP)测量完成的，这应确保用户始终连接到具有最高接收功率的小区。然而，在某些环境中，干扰会导致用户的服务质量下降(RSRP度量无法检测到)，可能会出现基于质量的度量能够实现更好的系统性能的情况。在本文中，我们使用动态系统模拟来评估基于RSRQ的频率间切换作为防止服务退化的手段的成功和正确性。然而，RSRQ和基于RSRP的触发比较表明，RSRQ不能提供服务质量退化的鲁棒检测。此外，RSRQ严重依赖于当前系统负载和测量策略。

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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来源期刊

2008 IEEE International Symposium on Wireless Communication Systems

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