物联网关键技术与业务应用

文章基于物联网的体系架构,研究了无线传感网、物联网运营支撑系统及业务应用系统的关键技术,如RFID、智能卡、M2M平台等,并描述了物联网业务应用案例;对物联网产业链主要角色的需求展开分析,提出了物联网发展面临的问题。     

物联网的应用与发展分析

近几年来物联网技术受到了人们的广泛关注。本文介绍了物联网技术的研究背景,传感网的原理、应用、技术。以最具代表性的基于RFID的物联网应用架构、基于传感网络的物联网应用架构、基于M2M的物联网应用架构为例,对物联网的网络体系与服务体系进行了阐述：分析了物联网研究中的关键技术,包括RFID技术、传感器网络与检测技术、智能技术和纳米技术。     

运营商应对物联网业务发展的网络策略浅析

文章首先介绍了物联网的体系架构,重点分析了M2M业务与H2H业务的异同,从网络角度提炼了现有物联网业务的特征;然后结合通信网络的架构及功能,提出了物联网业务对通信网络的影响;最后对M2M业务网络实现的三种方式进行了分析,提出了通信网支撑物联网业务的分阶段演进的步骤和策略,为运营商基于现有通信网络发展物联网应用提供了参考。     

物联网体系结构、关键技术及面临问题

基于物联网的应用现状及发展前景,采用了对比分析和归纳总结的方法,介绍了物联网的概念与体系结构,简述了物联网的关键技术,包括:RFID技术、传感网技术、M2M技术、云计算和中间件技术等,指出了物联网面临的主要问题,得到了物联网必将为人类生活带来翻天覆地的变化,"智慧地球"的理想终将变成现实的结论。     

物联网业务体系架构演进研究

文章在深入分析物联网运营支撑的新需求和现有M2M管理平台的局限性的基础上,提出了一种物联网参考业务体系架构,并对该架构下各功能模块进行解析,对物联网业务模式的实现方案、移动通信网优化的要求及部署策略进行了剖析,对物联网通信协议功能扩展和标准化问题进行了探讨。     

物联网关键技术和标准化分析

介绍了物联网的概念,阐述了物联网与传感网、RFID、M2M的关系,给出了物联网的基本架构,分析了物联网技术和标准的国内外发展情况及存在的问题.     

物联网M2M网关剖析

首先对M2M网关的重要作用、市场前景和发展现状进行总结,进而分析M2M网关的相关业务需求、分类、架构和功能,总结所需的关键技术和几种典型应用场景,提出M2M网关未来的三大发展趋势。     

物联网与移动通信网的融合发展研究

首先分析了物联网的网络特点和网络架构;然后就物联网与移动通信网的融合发展进行了深入的研究,并提出运营商在物联网发展中的策略;最后,总结了移动核心网的改造需求,并提出基于核心网优化的M2M整体方案架构。     

方兴未艾的物联网

传感器网与互联网的结合产生物联网,是未来互联网的重要组成部分。物联网支持包括"感知中国"在内的各种应用,向服务网演化。有着广阔的发展前景。物联网本身是一个开放的结构,它使用开放协议的体系结构,支持各种基于互联网的应用,目前我国传感器网/物联网尚处于发展初期,运营商已经开始提供M2M业务支持物联网,运营商在物联网产业链中定位有待发展中形成。发展物联网一方面要高屋建瓴积极促进,另一方面要保持平和的心态,稳健地发展,应用驱动是成功的关键。     

基于M2M语义的智慧健康应用平台解决方案

从高层视野的角度给出物联网语义功能的实现框架,将支撑物联网应用的语义功能分解并模块化,基于该框架可以模块化地实现物联网语义功能。通过M2M系统总体架构,从参考模型、功能架构以及资源框架的角度来构建物联网语义架构;通过分析智慧健康应用场景对物联网平台语义能力的需求,给出基于M2M语义的智慧健康应用平台解决方案。     

Towards the implementation of advanced random access schemes for satellite IoT

Machine‐to‐machine (M2M) communications being pivotal for internet of things (IoT) networks are characterized by low‐cost, low complexity, and often energy constrained terminals with low traffic duty cycle. Satellite networks provide an attractive low‐cost solution for such application, in particular when the terminals (both fixed and mobile) are distributed over a wide geographical area not well served by terrestrial infrastructure. An ALOHA random access (RA) scheme is a natural candidate for M2M communications since it is well matched to sporadic traffic, and it requires little terminals coordination. However, the classical ALOHA scheme suffers from a low throughput when operated in a load region requiring low probability of packet loss. To overcome this intrinsic ALOHA limitation, in the last decade, a lot of effort has been devoted to the investigation of evolutions of the ALOHA scheme reducing the probability of destructive packet collisions thus making it more attractive for satellite IoT. In such context, the Contention Resolution Diversity ALOHA (CRDSA) scheme and the Asynchronous Contention Resolution Diversity ALOHA (ACRDA) have emerged as promising solutions thanks to their high spectral efficiency achievable with low packet loss probability. The results reported in literature are however assuming ideal demodulator performance. This paper investigates the design and optimization of RA burst demodulator algorithms for single‐frequency and multifrequency CRDSA and ACRDA. It evaluates the performance of such algorithms in a number of system scenarios of practical interest and studies the impact of relevant system parameters on several performance metrics.     

物联网统一接入研究

结合物联网发展趋势,针对现有物联网存在的问题,提出物联网统一接入的系统架构,实现物联网系统跨网络、跨运营商、跨国际的接入能力。     

M2M的业务范畴及其技术发展

指出M2M是使用电信运营商提供的网络和业务支撑平台并提供给其他各种规模垂直行业的公共物联网,它是物联网应用的一个子集。M2M的主要技术包括Thingbased M2M技术、机器对机器直接通信技术和M2M通信网技术。M2M市场潜力巨大,但还存在很多不确定因素,需要我们开展更多研究。     

SVELTE: Real-time intrusion detection in the Internet of Things

In the Internet of Things (IoT), resource-constrained things are connected to the unreliable and untrusted Internet via IPv6 and 6LoWPAN networks. Even when they are secured with encryption and authentication, these things are exposed both to wireless attacks from inside the 6LoWPAN network and from the Internet. Since these attacks may succeed, Intrusion Detection Systems (IDS) are necessary. Currently, there are no IDSs that meet the requirements of the IPv6-connected IoT since the available approaches are either customized for Wireless Sensor Networks (WSN) or for the conventional Internet.In this paper we design, implement, and evaluate a novel intrusion detection system for the IoT that we call SVELTE. In our implementation and evaluation we primarily target routing attacks such as spoofed or altered information, sinkhole, and selective-forwarding. However, our approach can be extended to detect other attacks. We implement SVELTE in the Contiki OS and thoroughly evaluate it. Our evaluation shows that in the simulated scenarios, SVELTE detects all malicious nodes that launch our implemented sinkhole and/or selective forwarding attacks. However, the true positive rate is not 100%, i.e., we have some false alarms during the detection of malicious nodes. Also, SVELTE’s overhead is small enough to deploy it on constrained nodes with limited energy and memory capacity.     

基于移动网络的机器通讯研究

机器通讯(M2M)是物联网的研究热点。国内外各标准组织已经启动M2M的相关研究。目前属于第三代合作伙伴计划(3GPP,3rd Generation Partnership Project)类型移动网络占有绝对优势地位。3GPP在R8阶段就开始了相关研究,现在已经进展到了R12阶段。描述了3GPP的M2M研究发展动态和最新进展,对比了3GPP机器通讯标准MTC的更新架构,介绍了最新的MTC框架和相关协议栈,分析了架构更新的原因,对下一步发展方向进行了展望。     

基于移动通信和传感网融合的移动物联网

能够提供更高数据率的4G网络已经在全球开始部署。但由于用户数量增长饱和,ARPU值不降反升,难以提高运营商的盈利能力。通过移动通信和传感网的结合,可以开拓一个巨大的移动物联网市场,增加大量的＂机器终端＂,同时实现移动通信技术向社会生活的各个领域渗透,从而保持通信产业的持续快速发展。     

Assessment of LTE Wireless Accessing for Managing Traffic Flow of IoT Services

Mobile Networks and Applications - There is a tremendous growth in the traffic of the Internet of Things (IoT) devices. Some of the IoT application scenarios may prefer the wireless access...     

数据交换标准是物联网产业发展的关键

阐述了物联网理念和定义,在分析其技术共性的基础上提出了物联网四大支柱产业群的划分。物联网产业发展的关键是应用,应用的关键是无处不在的末端设备的联网大集成,大集成的核心是统一数据交换标准的建立。提出了建立“类HTML”统一数据交换标准是物联网产业发展的关键,并对其可行性进行了全面的对比分析,同时对通过推行数据交换标准化占领物联网产业制高点进行了探讨,并提出了实践原型标准。     

Selfishness in secure internet of things networks: 6TiSCH case study

Wireless Networks - Performance and communication security in the Internet of Things (IoT) area draw a major concern for both academic and industrial communities. Indeed, an emerging number of IoT...