基于移动捎带的5G广域物联网信息传输方法研究

doi:10.11959/j.issn.1000-0801.2024080

Abstract

Abstract:

To solve the network access problem of low data rate and delay-insensitive services in remote areas, a widearea Internet of things (IoT) information transmission method based on mobile piggyback was proposed.Mobile carriers were used to provide senseless access support for IoT devices and expand network coverage.In areas without base station signal coverage, the mobile carrier established a connection with the sensor, obtained sensor data and stored it.When 5G access conditions were met, the sensing information was offloaded to achieve information access to the network.A data caching strategy based on cost function was proposed to improve the efficiency of information piggybacking.The coverage performance of the mobile piggyback scheme was analyzed and a hardware implementation scheme based on LoRa was designed.Simulation results show that the wide-area IoT information transmission method based on mobile piggyback can improve the efficiency of IoT information piggyback, and expand the coverage area of 5G network by 4.98 times.Field tests verify the effectiveness of the proposed method, and mobile piggyback nodes can achieve communication coverage with a radius of 4 km.

Key words: Internet of things, service analysis, caching strategy, relay node

CLC Number:

TN925

Zheng GUO, Le XU, Haiying ZHANG, Fengguang ZOU, Weixiao MENG. Research on 5G wide-area Internet of things information transmission method based on mobile piggyback[J]. Telecommunications Science, 2024, 40(3): 15-28.

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References 17

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场景	最大数据速率（UL）	最大端到端时延/s	设备密度
智慧工厂	5 Mbit/s	1	10 000个/工厂
智能测量	100 byte/（15 min）	10	20 000个/km²
集装箱	100 byte/（15 min）	10	15 000个集装箱/船
货运车辆	100 byte/（15 min）	10	120辆/列

场景	电池寿命/年	典型数据包大小/ byte	最大数据包大小/ byte	上报频率(次/天)
集装箱	12	200	2 500	24
货运车辆	20	200	2 500	24
托盘	7	300	300	24

	主要特点
应用程序负载大小分布	4
定期到达时间	MAR周期性上报的到达时间间隔分布为：1天（40%）、2 h（40%）、1 h（15%）和30 min（5%）

地址	功能码	长度	数据 1	校验码
01	03	02	0b 48	79 A6

仿真参数	取值
N	20 000
S_d	200～800 byte
φ	0.8
v	10 kbit/s
Δt	day(40%)、hour(40%)、min(20%)
P_c	1

Research on 5G wide-area Internet of things information transmission method based on mobile piggyback

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