Spectrum demand prediction ofLTE-Rsystem based on delay difference constraint

Peng LIU; Wei LI; Bin LIU; Tan WANG; Suiyan GENG

doi:10.11959/j.issn.1000-0801.2017330

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Spectrum demand prediction ofLTE-Rsystem based on delay difference constraint

Research and Development | 更新时间：2024-06-05

- Spectrum demand prediction ofLTE-Rsystem based on delay difference constraint
- Telecommunications Science Vol. 33, Issue 12, Pages: 74-83(2017)
- 作者机构：
  
  1. 华北电力大学，北京 102206
  2. 国家无线电监测中心，北京 100037
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2017330
  CLC： TN929.5
- Published Online：2017-12，
  
  Published：20 December 2017
- 稿件说明：
移动端阅览
Peng LIU, Wei LI, Bin LIU, et al. Spectrum demand prediction ofLTE-Rsystem based on delay difference constraint[J]. Telecommunications science, 2017, 33(12): 74-83.
DOI：

Peng LIU, Wei LI, Bin LIU, et al. Spectrum demand prediction ofLTE-Rsystem based on delay difference constraint[J]. Telecommunications science, 2017, 33(12): 74-83. DOI： 10.11959/j.issn.1000-0801.2017330.

摘要

为了科学地规划和分配LTE-R的用频，需要对其频谱需求总量做出合理预测。在深入分析ITU-R M.1768方法的基础上，提出了一种基于时延差异性约束的LTE-R系统频谱需求预测方法。该方法定义了9种服务类别和9种服务环境，推导给出了LTE-R系统业务量的计算表达式，在业务时延差异性约束条件下利用M/G/1排队模型对我国LTE-R系统的频谱需求进行了初步预测。研究结果表明，我国LTE-R系统上行和下行频谱需求不对称，且可能的范围分别是14~15MHz和5~6MHz，若不考虑未来新增的视频业务量，目前分配给GSM-R系统的频谱资源即可满足其带宽需求。此外，分析了LTE-R网络实际承载层面的工程频率效率和基于高带宽的视频业务量对LTE-R频谱带宽需求总量的影响。该研究为我国下一代铁路移动通信系统的频率规划提供了技术支撑。

Abstract

In order to plan and allocate the spectrum resources ofLTE-Rscientifically

it is necessary to make reasonable forecast of total spectrum demand for LTE-R.After deep analysis of ITU-R M.1768 method

a spectrum demand forecasting method based on different delay constraints forLTE-Rsystem was provided.This method defined nine kinds of service categories

nine kinds of service environments

and derived the expression ofLTE-Rsystem traffic.Under different delay constraints condition of different services

the M/G/1 queuing model was used to analyze the spectrum requirements ofLTE-Rsystem preliminarily.The results show that the uplink and downlink spectrum demand of China’sLTE-Rsystem is asymmetric and the possible range is 14~15MHz uplink and 5~6MHz downlink

respectively.If new video traffic in the future is not considered

the current spectrum resources distributed to GSM-R system spectrum can meet the bandwidth requirements ofLTE-Rsystem.In addition

the influence of engineering frequency efficiency ofLTE-Rnetwork and high-bandwidth video traffic onLTE-Rspectrum total bandwidth demand was analyzed.This study provides technical support for the frequency planning of China’s next generation railway mobile communication system.

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references

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