Study of key technology for reconfigurable satellite platform supporting network interconnection

Reconfigurable satellite platform is a new spacecraft design concept.The application of distributed computing in reconfigurable integrated satellite platform was studied,the standard mechanical interface,electrical interface for the separation or separation between main platform and a variety of payloads to form a new combination and achieve the expansion of platform functions and efficient use was proposed.Including the security control protocol,scalable design,distributed computing and management models and other aspects of a detailed design,the key technologies of reconfigurable integrated satellite platforms supporting network interconnection were studied to meet the existing communications,remote sensing and navigation satellites’ needs.It will be promoted for the spacecraft design to the integrated business and in the orbit reconfiguration direction of continuous development,which will enhance the stability of the orbit operation,survivability and maintainability and provide a reliable technical foundation for the world of integrated network research.     

异构认知网络环境下的动态分级资源管理方法

针对异构认知网络中的资源管理问题,提出了基于认知的动态分级资源管理方法(DHRM)。根据不同时间尺度,引入小波神经网络、基于维纳过程的预测方法和增强学习算法获得业务分布变化、切换呼叫资源需求量以及用户喜好等信息,从而动态调配异构多网络各级可用资源。在资源合理分配基础上,根据各网络实时状态以及用户喜好,通过多属性决策算法动态地将业务流分配到最佳接入网络中。仿真结果表明,DHRM相对于网间静态资源管理方法系统容量提高了约20%。     

基于GIS平台的CATV网络管理方案

论述了基于GIS平台的有线电视网络的管理方案，将GIS的空间管理与有线电视的网络管理有机地结合起来。并进一步阐述了有线电视网络管理的功能、组成及其系统设计方案。     

A fault-tolerant GaAs/CMOS interconnection network for scalablemultiprocessors

The design of an interconnection network (ICN) for a scalable multiprocessor system is presented. The tree-structured network (called SHUNT for scalable hierarchical unidirectional network topology) is organized so that it can be scaled not only in width (through the use of bit slicing), but also in number of ports and in data transfer speed. The network is made from three custom chip types: cluster controller, crossbar switch, and network interface. Implementation of the first prototype chips in 2-μm CMOS is discussed, and the results of detailed circuit simulations for GaAs implementations are given. The network is fault tolerant and is able to detect and correct all single-bit transmission errors. In addition, it can detect failures and reconfigure to work around problems in controllers, port interfaces, or user processors. The network is part of the experimental decoupled computer architect project (DART) currently under study and development     

子网级大容量异构网络管理研究

通过对构建大容量异构网络管理系统面临的主要问题进行研究,文章提出了在分治服务架构方式下,基于进程的动态可伸缩软件架构。采用嵌套分层的业务管理模型和对象动态内存管理技术,解决了子网级大容量异构网络管理的主要问题。     

Interference management for spectral coexistence in a heterogeneous satellite network

With the advent of the fifth generation of mobile radio communication by 2020, there will be many challenges such as increasing service demand with low delay in providing billions of end users called the satellite mobile users. It is expected that terrestrial communication systems will be faced with a dense network having many small cells anywhere and anytime. Therefore, there are some remote regions in the world where terrestrial systems cannot provide any services to end users. Furthermore, because of lack of spectral resources, it is very important that the spectrum is shared between satellite systems and terrestrial equipment by a suitable solution to interference management. In this paper, a heterogeneous satellite network that includes low earth orbit (LEO) satellite constellation and terrestrial equipment is proposed to provide low delay services. In this type of structure, interference management based on transmission power control between LEO satellite systems and mobile users is very important for obtaining high throughput. Moreover, in order to mitigate interference, transmission power control is shown based on noncooperative Stackelberg game under many subgames through pricing‐based algorithm and convex optimization method. Finally, the simulation results show that the performance of this study's system model will be improved through the proposed algorithm.     

Packet-switched on-chip interconnection network for system-on-chip applications

Increasing complexity of a system-on-chip design demands efficient on-chip interconnection architecture such as on-chip network to overcome limitations of bus architecture. In this brief, we propose a packet-switched on-chip interconnection network architecture, through which multiple processing units of different clock frequencies can communicate with each other without global synchronization. The architecture is analyzed in terms of area and energy consumption, and implementation issues on building blocks are addressed for cost-effective design. A test chip is implemented using 0.38-/spl mu/m CMOS technology, and measured its operation at 800 MHz to demonstrate its feasibility.     

唐山CATV数据平台网络管理系统

唐山ＣＡＴＶ数据平台建成后 ,随着各项新业务的引进 ,为使网络安全、可靠地投入运行 ,保障各项业务的数据传输 ,需要一个高效、科学的网络管理系统。1　网络管理的基本功能国际标准化组织 (ＩＳＯ)对网络管理系统建议了 5项基本功能 ,即性能管理、故障管理、配置管理、计费管理和安全管理。(1)性能管理性能管理提供对网络设备的状态以及网络和网络单元的有效性进行评估和报告的一组功能 ,包括性能监视、性能管理控制和性能分析等 ,以便核实所保持的服务等级 ,鉴别实际和潜在的“瓶颈” ,并建立和报告有关管理决策的实施情况。(2 )故障管理…     

ARMORIQUE: A pure ATM versatile interconnection network

We present a proposal for a pure all-ATM private network architecture able to be implemented on any physical wiring (star, ring or hierarchical network). The discussion is based upon an experimental network under study in CNET, named ARMORIQUE. Traffic estimations show that the solution proposed is able to fulfil severe grade of service requirements and offers sufficient throughput to the interconnected sources.     

Energy efficient radio resource management for heterogeneous wireless network using CoMP

The coordinated multi point (CoMP) transmission technique is considered a key feature in future wireless network to improve both cell edge users throughput by exploiting interference. However, to provide CoMP transmission several BSs need to be active, which eventually increases network energy consumption. The simultaneous active multiple BSs with different transmission characteristics in heterogeneous environment cause interferences on each other. In this paper, we study the energy efficient radio resource management (EE-RRM) scheme for heterogeneous wireless networks to reduce interference. In particular, our aim is to allocate subcarrier power by optimizing EE metric and minimize interference with knowledge of channel state information between BSs and user equipment. The EE-RRM problem is a fractional programming problem. In order to solve, we use Charnes–Cooper transformation technique and transform it into an equivalent concave optimization problem. The numerical results of our work present the effect of different interference, rate and power thresholds on the EE metric.     

异构网络选择的一种新博弈模型

目前对于异构网络选择问题的研究大多没有充分考虑用户和网络的相互选择,为此提出一种新的异构网络选择博弈模型,通过用户与网络相互选择得到该博弈的稳定匹配.算法性能分析与仿真验证表明,该模型相对于用户决策模型提高了网络满意度,相对于网络决策模型提高了用户满意度,即最终用户与网络得到了双赢.     

多域光网络互联互通技术

首先介绍了光网络设备的发展状况,然后分析了现有光网络域间互联互通中的主要问题,接着介绍了现有的几种关于多域光网络域间互联互通的技术,包括静态互联技术、GNMS技术、E-NNI技术、PCE技术和SDON技术.通过分析各种技术的优缺点,介绍了两种技术结合使用的方案.     

Annotated bibliography on network interconnection

This bibliography covers the various aspects of network interconnection. It contains a list of papers, documents, and books dealing with interconnection at different layers of the ISO OSI reference model and covers topics such as interconnection among various types of networks, backbone networks, standardization efforts, interconnection techniques, formal approaches, network management, protocol issues, addressing and naming, routing, performance evaluation, gateway implementations, and existing products     

Broadcast communication operations for hyper hexa-cell interconnection network

The hyper hexa-cell (HHC) interconnection network is relatively a new interconnection network, which is constructed from hexa-cell and hypercube topologies. HHC is developed to support parallel algorithms for solving computation and communication intensive problems. Thus, in order to support solving these problems efficiently, this paper presents two broadcast communication operations for HHC using store-and-forward technique; namely, one-to-all and all-to-all broadcast operations; which allow a message to be transmitted through the shortest path from the source node to all other nodes. The broadcast communication operations are evaluated analytically in terms of communication steps, communication latency, communication cost, and speed over HHC and wraparound square mesh interconnection networks. The analytical results over HHC show that in both one-to-all and all-to-all broadcast operations, the maximum communication steps are \( d + 2\), where d is the dimension of HHC, which is a small integer number. Also, the communication latency increases linearly when the network size increases, and the communication cost for the broadcast operations is equal to O(\(2^{d-1})\). Moreover, the speed of both broadcast operations on d-dimensional HHC is \(d+2\times \) speed of electronic links. In comparison between HHC and wraparound square mesh, one-to-all and all-to-all broadcast communication operations over HHC perform much better than mesh in terms of maximum communication steps, communication latency, and speed.     

居民社区网络管理平台的开发

居民社区网络管理平台的开发，是为社区居民提供社区管理、电子商务平台、社区信息服务、社区娱乐服务等全方位的多媒体综合信息平台。通过这个网络平台，社区居民可以实现在网上求助、网上聊天、网上购物、网上教育、网上咨询等多项服务。开发居民社区网络管理平台的目标是本着以低廉的成本开发出简洁、实用、高效网络平台。     

The design of the idea network management platform

This article describes the design of the IDEA network management platform which is to provide a general solution for constructing network management systems over heterogeneous and distributed environments.     

网络资源管理平台的设计与应用

随着信息技术的发展,高校网络运维设备的大规模剧增,依靠人工进行资源巡检解决问题的运维模式面临的难题日益凸显.现有有线和无线网络的一体化部署,随着IPv6应用不断增加,边缘设备所承载的流量激增;特别是随着移动终端的普及,用户承载方式由每端口单一用户转变为每端口多终端用户,传统的千兆星型汇聚网将难以满足未来信息化校园的建设需求.传统运维管理模式是运维人员发现系统无法使用后,再去抢修,该运维模式非常被动,难以及时高效地发现和解决问题.由于业务应用的不断增加,部分接口流量较大,需要通过网络资源管理平台监测、纳管设备,对校区内所有网络设备和链路进行实时监控与管理,从而及时预见和分析设备及网络故障,发现并消除故障.     

计算机网络管理仿真平台防火墙实验设计

科技的不断发展与进步使得人们的生活方式发生重大变化,计算机逐渐兴起并且广泛应用于现实生活,成为人们经济生活的主要方式。但是在计算机的使用中,安全问题一直备受关注,网络安全事故造成的伤害事件以及危险事件成为人们关注的焦点,因此需要对计算机网络管理进行防火墙设计,提升安全管理质量。计算机防火墙设计需要一定的实践经验,才能保证整体的设计质量,还需要进行深刻探讨。文章对计算机网络管理仿真平台防火墙实验设计进行了分析。     

基于IAAS的异构虚拟化管理平台的设计与搭建

本文所阐述的异构虚拟化管理系统设计的基本思想和实现方案是以虚拟化管理思想为依据,以开源虚拟化库libvirt为技术基础,以J2EE开源开发框架为工具,实现对多平台虚拟化环境集成管理技术研究成果的可视化体现.该系统的成功建立将对各虚拟化管理平台建设起到很好的支撑作用,从而解决长期以来虚拟化管理难以工程化的问题.     

基于动态累加器的异构传感网认证组密钥管理方案

利用动态累加器的证人能够证明特定累加项是否参与累加的特性,实现了组成员身份认证,提出了一种新的支持节点动态增加和撤销的组密钥管理方案DAAG。在需要建立组密钥时,所有成员节点提供自己持有的累加项,参与累加计算。DAAG方案在保证成员节点证人机密性的基础上, 通过绑定证人与组密钥更新计算,限制了非成员节点对新密钥的计算能力。安全性和性能分析表明,DAAG方案虽比FM方案消耗更多的通信代价,但能够抵抗伪造、重放和共谋等恶意攻击,提供前后向安全性。