4G and 5G fusion coverage over China high-speed rail

计算机科学 火车 钥匙(锁) 偏移量(计算机科学) 计算机网络 电信 实时计算 地图学 计算机安全 程序设计语言 地理
作者
Qundong Zhao
标识
DOI:10.1117/12.2671224
摘要

In China, 4G and 5G networks have been maturely applied to high-speed rail scenarios, and the user experience of networks on high-speed rail has been further improved. The critical issues of wireless communication coverage on high-speed rail have been solved with key technologies, including Doppler frequency offset fixed by shift correction and compensation algorithm, frequent switching of networks solved by the exclusive network coverage method and cell combination technology, and car body attenuation resolved by combining multiple frequency networks and prioritizing low frequency. This paper analyzed such key technologies and verified their effects on problem-solving via tests. With the popularization of high-speed rail, new problems have emerged in the communication field, such as complex networks with multiple formats and multiple frequencies, the influence induced by exclusive network coverage for high-speed rail, and the problem of insufficient capacity. This paper explored two topics, namely the breakpoint issue and capacity problem of the exclusive network when trains pass each other on high-speed rail, and proposed a solution of 4G and 5G fusion coverage to achieve continuous coverage at breakpoints and equalize capacity resources, which expanded the application of 5G on the basis of fully harnessing the 4G network.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
corre发布了新的文献求助10
1秒前
峰峰发布了新的文献求助10
2秒前
Elena关注了科研通微信公众号
2秒前
3秒前
芥丶子完成签到,获得积分10
4秒前
Mr_I完成签到,获得积分10
4秒前
jack发布了新的文献求助10
5秒前
tomjim100完成签到,获得积分20
5秒前
脑洞疼应助123采纳,获得10
5秒前
6秒前
6秒前
6秒前
靓仔看文献完成签到,获得积分10
6秒前
7秒前
听风暖完成签到 ,获得积分10
8秒前
8秒前
9秒前
峰峰完成签到,获得积分10
10秒前
JXingER完成签到,获得积分10
10秒前
song_song完成签到,获得积分10
11秒前
天天发布了新的文献求助10
11秒前
Micahaeler完成签到,获得积分10
11秒前
Xinyu_Liu完成签到,获得积分10
11秒前
刘硕完成签到,获得积分10
11秒前
Dyeing发布了新的文献求助30
11秒前
13秒前
凌云完成签到,获得积分10
13秒前
13秒前
听风发布了新的文献求助10
13秒前
NexusExplorer应助科研通管家采纳,获得10
15秒前
wanci应助科研通管家采纳,获得10
15秒前
顾矜应助科研通管家采纳,获得30
15秒前
monere应助科研通管家采纳,获得10
15秒前
桐桐应助科研通管家采纳,获得10
15秒前
领导范儿应助斯文怀蕾采纳,获得10
15秒前
CipherSage应助科研通管家采纳,获得10
15秒前
平凡完成签到,获得积分10
15秒前
15秒前
jack完成签到,获得积分10
15秒前
高分求助中
The late Devonian Standard Conodont Zonation 2000
The Lali Section: An Excellent Reference Section for Upper - Devonian in South China 1500
Nickel superalloy market size, share, growth, trends, and forecast 2023-2030 1000
Smart but Scattered: The Revolutionary Executive Skills Approach to Helping Kids Reach Their Potential (第二版) 1000
Mantiden: Faszinierende Lauerjäger Faszinierende Lauerjäger 800
PraxisRatgeber: Mantiden: Faszinierende Lauerjäger 800
Sensory analysis — Methodology — Guidelines for the measurement of the performance of a quantitative descriptive sensory panel 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3246076
求助须知:如何正确求助?哪些是违规求助? 2889679
关于积分的说明 8259727
捐赠科研通 2558094
什么是DOI,文献DOI怎么找? 1387004
科研通“疑难数据库(出版商)”最低求助积分说明 650362
邀请新用户注册赠送积分活动 626793