M2M移动通信网络架构研究

文章对M2M业务特征和MTC通信网络架构进行了探讨。首先详细分析M2M业务特征以及对现网架构的影响;然后借鉴国际标准组织提出的M2M网络架构,并在此基础上根据现阶段的网络现状和M2M业务需求提出了3G网络阶段适用的网络架构。     

M2M国内外标准进展

物联网被称为继计算机、互联网与移动通信网之后的又一次信息产业浪潮,M2M作为物联网在现阶段最普遍的应用得到了各行业的广泛关注,也是各大标准化组织研究和标准制定的工作重点所在。本文对M2M在ETSI的标准状况,3GPP和3GPP2开展的M2M的标准工作,以及CCSA在M2M标准方面的进展情况进行了介绍。     

5G场景下面向M2M巨连接的无线接入控制策略

针对海量接入采用随机接入所造成的网络拥塞和业务过载,从而导致用户接入时延增大、分组数据包丢失等问题,研究提升5G场景下面向巨连接的无线接入能力。首先,通过汇聚数据设备的通信接入机制降低机器通信设备的碰撞次数以缓解基站接入拥塞;然后,以最小化MTC设备总的平均接入时延为优化目标,采用强化学习的方法实现最优接入基站的选择,形成机器通信设备接入基站过程的动态优化。     

M2M业务信息化应用研究

工信部将物联网纳入了“十二五”规划之中，运营商发展M2M业务的必要性越来越突出。文章从分析M2M与物联网的联系与区别入手，分析了目前世界范围内M2M的应用情况以及中国三大主流通信运营商的M2M应用：接着重点阐述了中国移动的M2M应用种类以及发展策略：最后给出了运营商在M2M业务发展方面未来发展方向的建议。     

电信运营商拓展M2M市场的战略思考

本文以电信运营商的视角,从产业发展角度对行业信息化与M2M应用进行了对比分析,总结了M2M业务在商业模式、标准体系、M2M通信特征研究等方面发展现状和趋势.进而,本文对M2M产品体系和业务发展提出了相关建议.     

融入M2M业务的LTE-A无线网络随机接入优化分析

随着机器通信(MTC)的快速发展及增长,大量MTC设备同时接入网络会造成无线接入网络的过载问题.为了解决这一问题,3GPP已经在LTE-A网络中提出了一些解决因大量MTC同时涌入而造成的无线网拥塞问题的候选方案.本文通过对这些解决方案进行分析与研究,并在此基础上对融入机器对机器(M2M)业务的LTE-A无线网络侧的随机接入提出优化方案.     

运营商M2M技术与业务发展策略研究

运营商对M2M业务应该立即行动起来，以标准化为手段，积极引导掌控产业链的发展，拓展增值业务蓝海。     

3GPP对M2M优化技术的研究进展

随着物联网的快速发展，移动通信技术将迎来大的变革，3GPP也把对M2M的相关研究和标准制定作为重点工作之一。本文介绍了3GPP在R11阶段对M2M的研究和所提出的在LTE系统中避免网络拥塞的相关优化技术。     

物联网M2M业务终端优化技术研究

随着M2M业务发展扩张,MTC终端的一系列特性和由此带来的问题对业务的规模发展产生了不利影响。文章在对此深入分析的基础上,重点研究3GPP对于终端优化的相应解决方案,通过对多种方案的多维度比较分析,结合现状,给出适用于运营商的方案建议。最后针对MTC终端应用开发者提出了相关的部署建议。     

M2M在3GPP SA2的研究进展

随着物联网的快速发展,M2M成为各个标准化组织研究和标准制定的工作重点。3GPP作为移动通信技术的主要研究和标准制定者,对M2M的相关研究和标准制定也在加紧进行。本文在介绍3GPP各个工作组的工作情况的基础上,重点介绍了M2M在3GPP在SA2的研究和标准化进展情况。     

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。     

Secure machine‐type communications in LTE networks

With a great variety of potential applications, machine‐type communications (MTC) is gaining a tremendous interest from mobile network operators and research groups. MTC is standardized by the 3rd Generation Partnership Project (3GPP), which has been regarded as the promising solution facilitating machine‐to‐machine communications. In the latest standard, 3GPP proposes a novel architecture for MTC, in which the MTC server is located outside the operator domain. However, the connection between the 3GPP core network and MTC server in this scenario is insecure; consequently, there are distrustful relationships among MTC device, core network, and MTC server. If the security issue is not well addressed, all applications involved in MTC cannot be put into the market. To address this problem, we propose an end‐to‐end security scheme for MTC based on the proxy‐signature technique, called E²SEC. Specifically, both the MTC device and MTC server can establish strong trustful relationships with each other by using the proxy signatures issued by the 3GPP core network. Moreover, we present some implementation considerations of E²SEC and analyze the performance during authentication by comparing the operational cost of three cases that apply three different signature algorithms, that is, ElGamal, Schnorr, and DSA. Through security analysis by using Automatic Cryptographic Protocol Verifier (ProVerif), we conclude that the proposed E²SEC scheme can achieve the security goals and prevent various security threats. Copyright © 2015 John Wiley & Sons, Ltd.     

电信运营商M2M运营管理平台探讨

M2M运营管理平台是电信运营商汇聚行业应用,为行业应用提供业务能力的重要平台。本文首先分析了国际标准化组织对M2M的基本业务需求及功能架构,然后从电信运营商实际网络运营情况和M2M行业应用特点出发,探讨了M2M运营管理平台的功能架构。同时,提出了一种基于M2M平台扩展的M2M终端/网关通信管控方法,为行业应用提供全面的通信管理服务。     

PTN技术发展趋势和组网应用

对分组传送网（PTN）和MPLS-TP技术的发展情况进行了介绍,包括MPLS-TP的标准化情况,PTN设备发展和测试情况,对1588v2和同步以太网的支持,对LTE承载方式的探讨,以及应用方式的考虑等。     

Localization in terrestrial and underwater sensor‐based m2m communication networks: architecture,classification and challenges

Localizing machine‐type communication (MTC) devices or sensors is becoming important because of the increasing popularity of machine‐to‐machine (M2M) communication networks for location‐based applications. These include such as health monitoring, rescue operations, vehicle tracking, and wildfire monitoring. Moreover, efficient localization approaches for sensor‐based MTC devices reduce the localization error and energy consumption of MTC devices. Because sensors are used as an integral part of M2M communication networks and have achieved popularity in underwater applications, research is being conducted on sensor localization in both underwater and terrestrial M2M networks. Major challenges in designing underwater localization techniques are the lack of good radio signal propagation in underwater, sensor mobility management, and ensuring network coverage in 3D underwater M2M networks. Similarly, predicting the mobility pattern of MTC devices, trading‐off energy consumption and location accuracy pose great design challenges for terrestrial localization techniques. This article presents a comprehensive survey on the current state‐of‐the‐art research on both terrestrial and underwater localization approaches for sensor‐based MTC devices. It also classifies localization approaches based on several factors, identifies their limitations with potential solutions, and compares them. Copyright © 2015 John Wiley & Sons, Ltd.     

Physical layer architectures for machine type communication networks—a survey

Machine‐type communication (MTC) has attracted much attention due to the fact that it provides pervasive connections for billions of MTC devices, forming a basis for the Internet of things. Most works in the literatures on machine‐to‐machine (M2M) communications focused on media access layer (MAC) layer or other upper layer applications, such as e‐health, energy management and entertainment services. On the other hand, physical (PHY) layer plays a pivotal role in M2M communications. To accommodate a large number of MTC devices, M2M should be made efficient enough in terms of its power consumption and spectrum utilisation. Copyright © 2016 John Wiley & Sons, Ltd.     

A congestion reduction mechanism using D2D cooperative relay for M2M communication in the LTE‐A cellular network

The Long Term Evolution‐advanced cellular network is designed for human‐to‐human communication. When a large number of machine‐to‐machine (M2M) devices are trying to access the network simultaneously, it leads to a low random access (RA) successful rate and high congestion problem, which may cause the waste of radio resources, packet loss, latency, extra power consumption, and the worst, M2M service error. There is an urge to propose an efficient method for M2M communication on the LTE‐A network to resolve the congestion problem. In this paper, we propose a congestion reduction mechanism, which can analyze and model the RA procedure on the Long Term Evolution‐advanced network, to find out the collapse point in the RA procedure and then design a scheme named device‐to‐device cooperative relay scheme to relieve the congestion problem. Meanwhile, this work also adds a relay access barring algorithm to improve performance and an RA resource separation mechanism for human‐to‐human communication. The proposed method can effectively reduce the network congestion problem. Simulation results show that the network throughput and the congestion can be significantly improved using the proposed mechanism. Copyright © 2016 John Wiley & Sons, Ltd.