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轨道交通中 LTE-M 邻道干扰分析。

Analysis of LTE-M Adjacent Channel Interference in Rail Transit.

机构信息

Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China.

CASCO Signal Ltd., Shanghai 200071, China.

出版信息

Sensors (Basel). 2022 May 20;22(10):3876. doi: 10.3390/s22103876.

DOI:10.3390/s22103876
PMID:35632285
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9143069/
Abstract

Long Term Evolution-Metro (LTE-M), as a special communication system for train control, has strict requirements on adjacent channel interference (ACI). According to the 3rd Generation Partnership Project (3GPP) protocol of the European Telecommunications Standards Institute (ETSI) standards, this paper presents the required isolation degree for LTE-M systems to resist ACI. Aiming at the scenario of leaky cable transmission and antenna transmission adopted by the underground LTE-M system of the subway, the isolation degree required for LTE-M system deployment is deduced by combining the channel description with the principle of ACI. For the coexistence of a LTE-M system and an adjacent cellular system in a subway ground scenario, the Monte-Carlo (MC) method is used to simulate several conceivable scenarios of the LTE-M system and the adjacent frequency cellular system. In addition, the throughput loss of the LTE-M system is estimated by considering signal to interference plus noise ratio (SINR). Simulation results demonstrate that adjacent frequency user equipment (UE) has negligible small interference with the LTE-M underground system when using the leaky cable radiation pattern, whereas for the LTE-M ground system, the main interference comes from the adjacent frequency UE to the LTE-M base station (BS). Finally, interference avoidance solutions are presented, which can be utilized as a reference in the design and deployment of LTE-M systems in the rail transit environment.

摘要

长期演进-地铁 (LTE-M) 作为一种专门的列车控制通信系统，对邻道干扰 (ACI) 有严格的要求。根据欧洲电信标准协会 (ETSI) 的第三代合作伙伴计划 (3GPP) 协议，本文给出了 LTE-M 系统抵抗 ACI 所需的隔离度。针对地铁地下 LTE-M 系统采用漏泄电缆传输和天线传输的场景，结合 ACI 原理和信道描述，推导了 LTE-M 系统部署所需的隔离度。对于地铁地面场景中 LTE-M 系统和相邻蜂窝系统的共存，采用蒙特卡罗 (MC) 方法模拟了 LTE-M 系统和相邻频率蜂窝系统的几种可能场景，并考虑信号干扰噪声比 (SINR) 来估计 LTE-M 系统的吞吐量损失。仿真结果表明，采用漏泄电缆辐射模式时，邻道用户设备 (UE) 对 LTE-M 地下系统的干扰可以忽略不计，而对于 LTE-M 地面系统，主要干扰来自相邻频率 UE 对 LTE-M 基站 (BS) 的干扰。最后，提出了干扰避免方案，可为轨道交通环境中 LTE-M 系统的设计和部署提供参考。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/ce0a3bbf2146/sensors-22-03876-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/ddff8ee12714/sensors-22-03876-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/4e3a52dd5efd/sensors-22-03876-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/fcad9766d737/sensors-22-03876-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/129df4ad424f/sensors-22-03876-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/8563077c5c56/sensors-22-03876-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/a8d4111b5235/sensors-22-03876-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/ce0a3bbf2146/sensors-22-03876-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/edfd5bc3e5ed/sensors-22-03876-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/3922e7dd1b19/sensors-22-03876-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/fea89709828e/sensors-22-03876-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/6dc2266c4a89/sensors-22-03876-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/ddff8ee12714/sensors-22-03876-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/4e3a52dd5efd/sensors-22-03876-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/fcad9766d737/sensors-22-03876-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/129df4ad424f/sensors-22-03876-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/cde6b9a8aff1/sensors-22-03876-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/8563077c5c56/sensors-22-03876-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/a8d4111b5235/sensors-22-03876-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/779c/9143069/ce0a3bbf2146/sensors-22-03876-g012.jpg

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本文引用的文献

1
Evaluation of adjacent channel interference from land-earth station in motion to 5G radio access network in the Ka-frequency band.在Ka频段评估移动地球站对5G无线接入网络的邻道干扰。
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