基于GIS的广电网络设备管理系统的应用和研究

随着广电网络技术的发展,各地有线电视网络规模迅速扩大,为用户使用提供了优质服务。而广电网络的优化、维护量日益增多,就对广电网络的光纤资源和设备管理提出了更高的要求。就设计和开发一款基于GIS技术的广电网络设备管理系统进行分析,将GIS系统和网络设备管理相结合,辅助管理人员完成网络故障分析、资源管理和设备管理等功能。     

论携号转网行为的私法规制

以电信用户入网协议为切入点,电信用户的携号转网行为应受到《合同法》《消费者权益保护法》等私法规范的保护与限制。该行为引起的格式条款解释、合同终止、违约责任、损失赔偿等问题,不能仅靠《电信条例》等公法规范来调整。应当积极引导广大消费者用户以私法领域相关规定为依据,转变争议解决思维,拓宽纠纷处理途径,合理选择维权手段,以保护自身合法民事权益,与行业监管部门共同推动电信行业有序发展。     

P-IoT自组网模式研究

为降低专网物联网(P-IoT)的建网成本,实现灵活部署和增强抗毁性以满足行业用户的应用要求,需对P-IoT自组网模式进行研究。首先,阐述了P-IoT自组网模式的重要性;在此基础上,从系统架构、支持的拓扑类型、协议栈设计以及技术优势对P-IoT自组网模式加以分析;最后,分析了P-IoT自组网模式在智能抄表与智能林防领域的创新应用。P-IoT自组网模式在多种应用环境下都能很好地满足行业用户的需求,在未来专网市场P-IoT自组网模式必将具备极强的竞争力。     

基于地标空间信息的高光谱遥感图像分类

高光谱遥感图像同时具有光谱与空间特征信息,充分利用空间特征能够有效提高分类结果.高光谱图像上同类像素点的邻域空间信息差异较大会影响分类效果,针对这个问题提出了一种新的空间信息利用方法,记作地标空间信息.将光谱信息与地标空间信息结合使用,通过深度信念网络提取特征.实验表明地标空间信息能够有效提高深度信念网络以及对比方法的分类结果.     

天地一体化信息网络统一编址与路由研究

天地一体化信息网络将是支持地面互联网、无线移动网络和空间网络相互连通、深度融合的一体化网络,采用统一的网络层设计是实现高效融合与互联互通的关键所在。针对空间链路和空间网络在稳定性、可靠性等方面的特点,提出了天地一体化信息网络的统一编址与路由的方案,基于IPv6和层次路由的方式实现网络层的高效融合,具有良好的可扩展性、可用性、稳定性、可管控性。     

A lightweight authentication scheme based on self‐updating strategy for space information network

The security of space information network (SIN) is getting more and more important now. Because of the special features of SIN (e.g., the dynamic and unstable topology, the highly exposed links, the restricted computation power, the flexible networking methods, and so on), the security protocol for SIN should have a balance between security properties and computation/storage overhead. Although a lot of security protocols have been proposed recently, few can provide overall attacks resistance power with low computation and storage cost. To solve this problem, in this paper we propose a lightweight authentication scheme for space information network. It is mainly based on the self‐updating strategy for user's temporary identity. The scheme consists of two phases, namely, the registration phase and the authentication phase. All the computing operations involved are just hash function (h), the bit‐wise exclusive‐or operation (⊕), and the string concatenation operation (||), which are of low computation cost. The security properties discussion and the attacks–resistance power analysis show that the proposed authentication scheme can defend against various typical attacks, especially denial of service attacks. It is sufficiently secure with the lowest computation and storage costs. Furthermore, the formal security proof in SVO logic also demonstrates that the scheme can satisfy the security goals very well. Copyright © 2016 John Wiley & Sons, Ltd.     

A New Modulation for Intrinsically Secure Radio Channel in Wireless Systems

One of the biggest challenges in RFID (radio frequency identification) large scale deployment, such as in warehouse RFID deployment, is the positioning of RFID reader antennas to efficiently locate all the tagged objects distributed at RFID reader environment. This paper has investigated a novel location sensing system based on geometric grid covering algorithm that can use any passive or active RFID standard for positioning or tracking objects inside buildings. This study involves design of RFID reader antenna network which focuses on placing the reader antennas on a grid to cover all the tags distributed at two dimensional planes and position calculation using statistical averages algorithm. The statistical averages algorithm simply computes the location coordinates of the tagged object by statistical average of the reader antenna’s location. The proposed grid of reader antennas can assist in minimizing the actual number of reader antennas required for RFID large scale deployment. The proposed prototype system is a simpler positioning system which presents the solution of placement pattern of RFID reader antennas, gives less complicated mathematical calculation, and is able to provide a high degree of accuracy. The obtained results show that the proposed location sensing system can achieve better positioning accuracy as compared to existing positioning system and in some cases accuracy improvement of about 50% can be reached.

基于流量攻击和边失效的复杂网络脆弱特性

基于流量的攻击可能对复杂网络造成严重破坏,现有研究主要针对节点攻击。该文分析了部分边失效时,复杂网络的脆弱特性。此外,分析了时机策略和网络规模对边失效的影响。通过研究节点负载和度分布特点,发现复杂网络的脆弱特性源于其幂率度分布引起的节点负载的极度非均匀分布。仿真实验表明,复杂网络对随机的边失效具有较强的耐受力,但在一定条件下,攻击极少量重要边就可能引发连锁的节点过载失效,而导致网络溃散。     

泛在网络资源管理模型的研究

泛在网络作为未来网络,存在自治性、异构性、复杂性、混沌性等挑战。泛在网络计算环境下资源的组织与管理、竞争与共享、分配、负载均衡等问题成为泛在网络发展的障碍。结合移动Agent技术,提出了一种基于移动Agent的泛在网络资源管理层次模型,为使用者提供一个分布的、易于扩展的、高效实用的泛在网络计算环境。     

WLAN Mesh网络安全接入技术研究

WLANMesh网络是当前主流的新型动态自组织网络。为了在适应多跳和自组织特性的条件下提供可靠安全能力,IEEE802．11S标准草案提出了全新的安全框架-Mesh安全关联（MSA）。将结合标准草案介绍MSA架构,包括新的密钥体系以及建立部署该密钥体系使用的协议的交互,并对协议安全特性进行简要安全分析。最后针对架构过于复杂的弱点提出一个试验性Kerberos风格的简化方案。