基于滑动窗口的接入新方案

doi:10.12263/DZXB.20200166

电子学报 ›› 2021, Vol. 49 ›› Issue (2): 300-305.DOI: 10.12263/DZXB.20200166

基于滑动窗口的接入新方案

李军, 孙君, 余云河, 贾志豪

南京邮电大学江苏省无线通信重点实验室, 江苏南京 210003

收稿日期:2020-02-13 修回日期:2020-08-21 出版日期:2021-02-25
- 通讯作者:
- 孙君
- 作者简介:
- 李军男,1995年6月生于湖北宜昌.现为南京邮电大学通信与信息工程学院硕士研究生.主要研究方向为大规模机器类通信设备的随机接入.E-mail:18168401913@163.com;余云河 男,1995年9月生于安徽安庆.现为南京邮电大学通信与信息硕士研究生.主要研究方向为大规模机器类通信下的资源分配与干扰研究.E-mail:15955164212@163.com;贾志豪 男,1995年1月生于安徽宣城.现为南京邮电大学通信与信息硕士研究生.主要研究方向为大规模机器类通信下接收端检测算法.E-mail:15201966009@163.com
- 基金资助:
- 国家自然科学基金 (No.61771255）; 中科院重点实验室开放课题 (No.20190904）

A Novel Random Accessing Scheme Based on Sliding Windows

LI Jun, SUN Jun, YU Yun-he, JIA Zhi-hao

Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210003, China

Received:2020-02-13 Revised:2020-08-21 Online:2021-02-25 Published:2021-02-25
- Corresponding author:
- SUN Jun
- Supported by:
- National Natural Science Foundation of China (No.61771255); Open Project of Key Laboratory, CAS (No.20190904)

摘要/Abstract

摘要： 在大规模机器类通信（Machine Type Communication，MTC）中，当短时间内大量的设备涌入LTE-A（Long Term Evolution-Advanced）网络，同时发起随机接入的时候就会造成严重的网络拥塞，需要采取合适的措施对拥塞加以控制.为此，本文提出了一种基于滑动窗口的拥塞控制方案，通过窗口的大小控制同时发起接入尝试的设备数量，降低设备间的碰撞概率，能够有效提高系统接入成功率，缓解网络拥塞.本文在不同负载场景中，将提出的方案与静态ACB（Access Class Barring）策略、动态ACB策略的接入性能进行了比较.仿真结果表明，本文所提出的方案能够实现接近100%的接入成功率，同时进一步降低平均接入时延与系统总体服务时长.

关键词: 大规模机器类通信, LTE-A随机接入, 拥塞控制, 滑动窗口, 接入成功率, 平均接入时延

Abstract: In massive machine type communication (MTC), when a large number of devices flood into the LTE-A (long term evolution-advanced) network in a short period of time,and simultaneously initiated random access attempt, which will cause serious network congestion. Appropriate measures need to be taken to control the congestion.Therefore, this paper proposes a congestion control scheme based on a sliding window. The size of the window controls the number of devices that simultaneously initiate attempts to reduce the collision probability between devices, which can effectively improve the success rate of system access and alleviate network congestion. In different load scenarios, the proposed scheme is compared with the receiving performance of the static ACB (access class barring) strategy and the dynamic ACB strategy. The simulation results show that the scheme proposed here can achieve access success rate close to 100%, while reduces the minimum average reception delay and overall system service time.

Key words: massive machine type communication, LTE-A random access, congestion control, sliding windows, access success probability, average access delay

中图分类号:

TN929.5

李军, 孙君, 余云河, 等. 基于滑动窗口的接入新方案[J]. 电子学报, 2021, 49(2): 300-305.

LI Jun, SUN Jun, YU Yun-he, et al. A Novel Random Accessing Scheme Based on Sliding Windows[J]. Acta Electronica Sinica, 2021, 49(2): 300-305.

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基于滑动窗口的接入新方案

A Novel Random Accessing Scheme Based on Sliding Windows

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