物联网学报 ›› 2018, Vol. 2 ›› Issue (3): 11-20.doi: 10.11959/j.issn.2096-3750.2018.00059
林金朝,柏桐,李国权,庞宇
修回日期:
2018-08-15
出版日期:
2018-09-01
发布日期:
2018-10-15
作者简介:
林金朝(1966-),男,博士,重庆邮电大学教授、博士生导师,主要研究方向为无线通信传输技术、BAN网络与信息处理技术等。|柏桐(1987-),男,重庆邮电大学博士,主要研究方向为无线体域网、无线通信。|李国权(1980-),男,博士,重庆邮电大学副教授、硕士生导师,主要研究方向为MIMO无线通信传输技术、BAN网络与信息处理技术等。|庞宇(1978-),男,博士,重庆邮电大学教授、博士生导师,主要研究方向为通信集成电路设计、逻辑综合、无线体域网及无线通信等。
基金资助:
Jinzhao LIN,Tong BAI,Guoquan LI,Yu PANG
Revised:
2018-08-15
Online:
2018-09-01
Published:
2018-10-15
Supported by:
摘要:
人们对于远程医疗的巨大需求,使得与之相关的人体局域网(BAN,body area network)技术引起了业界广泛关注。BAN系统通过将无线传感器植入人体体内或置于体表,实现对人体体征参数的实时监测与远程诊断,可应用于医疗、健康和娱乐等多个方面。BAN 技术对功耗、服务质量(QoS)、传输速率、安全性能等有更高的技术需求,在此基础上,讨论了体征信息感知、无线数据传输、信息安全以及芯片设计等关键技术的研究现状及发展趋势,分析了BAN应用所面临的各种挑战。
中图分类号:
林金朝,柏桐,李国权,庞宇. 人体局域网技术需求与挑战[J]. 物联网学报, 2018, 2(3): 11-20.
Jinzhao LIN,Tong BAI,Guoquan LI,Yu PANG. Technological requirements and challenges of body area networks[J]. Chinese Journal on Internet of Things, 2018, 2(3): 11-20.
表1
BAN应用的技术要求"
应用 | 传输速率 | 节点数 | 建立时间 | 点对点时延 | 误码率 | 占空比 | 电池寿命 |
心电 | 72 kbit/s | <6 | <3 s | <250 ms | <10?10 | <10% | >1周 |
脑电 | 86.4 kbit/s | <6 | <3 s | <250 ms | <10?10 | <10% | >1周 |
肌电 | 1.54 Mbit/s | <6 | <3 s | <250 ms | <10?10 | <10% | >1周 |
温度/呼吸/验血糖/加速度 | <10 kbit/s | <12 | <3 s | <250 ms | <10?10 | <10% | >1周 |
声音 | 1 Mbit/s | 3 | <3 s | <100 ms | <10?5 | <50% | >24 h |
成像 | <10 Mbit/s | 2 | <3 s | <100 ms | <10?5 | <50% | >12 h |
表3
BAN技术要求和预期范围"
特征 | 要求 | 范围要求 |
工作距离 | 体内?体表?身体四周 | 通常限制在3 m以内 |
高峰能耗 | 超低 | 睡眠模式中μW级别,完全工作模式可达30 mW |
数据率 | 可伸缩 | 从1 kbit/s到10 Mbit/s |
频带宽度 | 医疗频带和国际认证频带 | MedRadio、ISM、WMTS、UWB |
MAC | 可伸缩的、可靠的、通用的、自发形成的 | LPL机制、唤醒模式、翻转和同步 |
拓扑结构 | 星型、网状、树型 | 自形成分布、支持多条 |
QoS | 实时的波形数据、周期参数数据、紧急警报数据和突发情况数据 | 误码率:10?10~10?3,点对点时延:10~250 ms,支持优先级 |
环境 | 体遮蔽(扭动、转动、运动)、衰减 | 传感节点移入移出各自范围的无痕操作 |
安全 | 各种级别 | 认证、授权、隐私权、保密性、数据加密、信息完整性 |
安全性/生物相容性 | 不会因长期使用而产生有害影响 | 满足标准要求 |
重新设计、标准化、用户化 | 个性化、体积小、环境识别 | 能够程序重调、重新校准、调制无线设备 |
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