Telecommunications Science ›› 2019, Vol. 35 ›› Issue (8): 49-64.doi: 10.11959/j.issn.1000-0801.2019203
• Topic:advanced data networks • Previous Articles Next Articles
Yuhong LI,Peng ZHANG,Di JIN,Yingchao ZHOU
Revised:
2019-08-06
Online:
2019-08-20
Published:
2019-08-24
Supported by:
CLC Number:
Yuhong LI,Peng ZHANG,Di JIN,Yingchao ZHOU. Application’s needs and challenges for future networks[J]. Telecommunications Science, 2019, 35(8): 49-64.
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指标 | 定义 | 数据 |
确定性时延 | 闭环时延 | <250 μs |
响应时间 | 从数据发送到接收响应的时间 | <100 μs |
级联交换机 | 级联的交换机数量,即几跳 | <100 |
分组丢失率 | 数据分组丢失比率 | <10-9 |
抖动 | 某特定时刻相对于其理想时间位置上的短期偏离 | <1 μs |
切换时延 | 通道切换的时间,以避免闪烁 | <40 ns |
冗余切换时间 | 从主通信链路切换到备选链路的时间 | <15 μs |
时间同步精度 | 本地时钟和标准参考时间之间的误差 | <100 ns |
下行感知速率 | 在使用监控视频观察机床机器人行为时,使用者感知到的数据传输速率 | >1 Gbit/s |
上行速率 | 从本地上传到网络的数据传输速率 | >120 Mbit/s |
移动性 | 无缝的服务体验,用户和边缘网络之间的相对速度表示 | <500 km/h |
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指标音频 | 高清视频 | AR/VR | 全息多媒体 |
信息维度 音频 | 视频+音频 | 3D成像+音频+触觉信息 | 全息图+音频+触觉信息+嗅觉信息+味觉信息 |
交互性无交互性 | 交互性有限 | 可交互 | 可交互 |
沉浸感无沉浸感 | 无沉浸感 | 有一定沉浸感 | “身临其境”的体验 |
设备限制需要听筒等设备 | 需要屏幕设备 | 用户需要佩戴头戴式显示器、AR眼镜等设备 | 用户无需佩戴设备 |
编码方式传统音频编码 | H.264、H.265 | H.265、H.266 | 针对全息数据的新型编码方式 |
带宽100 kbit/s级 | 100 Mbit/s级 | 10 Gbit/s级 | 10 Tbit/s级 |
时延RTT不超过300 ms | RTT不超过20 ms | MTP时延不超过20 ms | 亚毫秒级 |
使能技术数据编码、数据压缩 | 数据编码、数据压缩 | 沉浸式技术、数据压缩、云计算、AR/VR | 全息技术、数据压缩、多模态信息同步、云计算 |
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指标 | 现有 | 未来 |
场景特点 | 监控位于工业现场 | 远程监控 |
视频监控,屏幕显示数据 | 与AR/VR结合 | |
仅收集生产数据 | 收集工厂内一切设备数据 | |
仅对产品生产过程进行监控 | 全周期监控 | |
技术实现手段 | 多元数据分别采集 | 数据融合 |
各类异构系统 | 系统集成 | |
传统媒体技术 | AR/VR、全息技术 | |
传统协议机制传输 | 新型协议机制减少时延 | |
本地处理中心或云端计算 | (移动)边缘计算/云雾计算/云计算处理数据 | |
用户体验 | 设计实现需现场考察落实 | “随处设计,随处实现”,远端“身临其境” |
设备更新维修需定期人工检查 | 设备维护更新自动化 | |
产品跟进困难 | 产品全周期跟踪 | |
性能指标要求 | 数据更新周期短,时延要求低 | 除满足第2.4.3节中的性能指标要求外,还需要满足AR/VR、全息图像的指标要求 |
使能技术 | IP技术 | NewIP技术、网络虚拟化技术、定制网络技术、去中心化技术、云计算、AR/VR/全息技术 |
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