最新刊期
卷 28 ， 期 9 ， 2012
- 摘要：Aiming at the challenge to realize the service dynamic extension in service-oriented architecture（SOA）, a service dynamic expansion mechanism based on SOA is proposed. Services pool and service dynamic extension idea are introduced to this service dynamic expansion system model, and the services are designed into the form of services pool to be called by the system, and the system realizes the service dynamic extension by administrating the resource pool. The critical processes of the service dynamic extension rules are written in ASML（abstract state machine language）. Last spec explorer is used to test the model, validating its feasibility and validity.关键词：service dynamic-extension;service resource pool;SOA;ASML575|811|0更新时间：2024-06-05
- 摘要：Based on the user-aware intelligence analysis system Abis interface signaling monitoring, this paper analyzes the Abis interface protocal stack structure, and realizes to monitor the Abis interface, using of modular thinking. For the current lack of Abis interface CDR synthesis algorithm, this paper uses pretreatment technology to obtain the synthetic CDR Hash key before making CDR synthesis, and a new recursive backtrack message associated with synthesis of the CDR. This scheme has successfully passed the Abis interface signaling monitoring system test and has good results.关键词：Abis interface;CDR synthesis;message association;Hash key402|1068|0更新时间：2024-06-05
- 摘要：Open-source VoIP technologies can be employed to setup VoIP platforms by deploying open-source software on x86 servers, which have many advantages such as low cost, flexibility and openness. The usage of open-source VoIP technologies in NGN service platform deployment helps to reduce carrier's investment, shorten service deployment cycle and improve the duplicability of service platform. In the paper, the architecture of NGN service platform deployed by open-source VoIP technologies is proposed based on comprehensive survey and detailed analysis. A typical example is also provided to evaluate the feasibility and advantages of the proposed NGN service platform deployment method.关键词：open-source;VoIP;NGN;service platform420|888|0更新时间：2024-06-05
- 摘要：Open government data（OGD）is growing steadily and it has been a vital communication channel between government and citizens. Government data published by linked data technology can promote transparency and even improve reuse rate of data. The paper describes the related concepts, publishing principles and advantages of linked government data. And then it deeply analyzes technology architecture which includes expression layer, compiling layer, interlinking, and browse/query layer on the basis of related concepts. Following it summarizes applications of linked government data in USA, UK and so on developed countries. Finally, it gets a view of applications and challenges of linked government data in China smart city construction.关键词：linked data;open government data;semantic web427|1112|0更新时间：2024-06-05
research and development
- 摘要：Cloud computing is a very popular research direction in the IT field in recent years, and private cloud is very important in cloud computing because itˊs safety, controllability and effective use of IT equipment resources. This paper introduces the architecture of an open source cloud computing platform OpenStack and the relationship between five functional modules in OpenStack. This paper also highlights a method of building private cloud based on OpenStack. In addition, this paper shares the problems met in building the private cloud platform and the solutions of solving the problems. In the end, this paper analyzes the security and flexible computing resource allocation capabilities of the private cloud platform.关键词：private cloud computing;OpenStack;flexible resource allocation1394|3614|0更新时间：2024-06-05
- 摘要：Mass customization is the key to the successful implementation of SaaS software service. In this paper, in order to meet diverse requirements of different tenants in the system interface, and to visit application software through all kinds of terminal, a client level framework for SaaS software service based on mass customization is proposed. In which, XML document describes the detailed requirements for the application system interface. According to this, the interface configuration algorithm is designed to produce data, which interacts with the terminal components to create user interface for tenants. Finally an example demonstrates the feasibility of this framework.关键词：SaaS;mass customization;interface;configuration;termina659|1082|0更新时间：2024-06-05
- 摘要：When user stores their data in the cloud storage, they most concern about whether the data is complete, privacy and unchanged. To ensure the availability and integrity of usersˊ stored data, cloud server must prove a verifier that it is actually storing all of a clientˊs data unchanged. And, enabling public auditability for cloud storage is of critical importance to users with constrained computing resources, who can resort to a third party auditor to check the integrity of outsourced data. However, most of the existing auditing schemes do not consider data privacy problem. In this paper, after giving a new construction of a recently proposed primitive named aggregatable signature based broadcast encryption scheme, we present an efficient public auditing scheme with privacy property. The new scheme is secure in the random oracle model and has less computation cost than existing auditing scheme with privacy property.关键词：cloud computing;cloud storage;public auditing;privacy;integrity652|1008|0更新时间：2024-06-05
- 摘要：Driven by the proliferation of mobile and pervasive computing, real-time systems are increasingly used in dynamic changing environments with variable user needs, hosting real-time applications ranging in number and nature over time. However, existing adaptation frameworks normally are incapable to cope with other competing and changing concerns. This paper proposes an architecture-based framework for managing real-time components' dependence and lifecycle in an effective and uniform way. A real-time component runtime service is proposed here to maintain the global view, control the whole lifecycle of the components and keep existing real-time componentsˊ promised contracts in the face of run-time changes. This framework is designed to be easily extended with other constraint resolving policies as well as dependence descriptions languages and can be used to provide real-time computing services for cloud computing. At end of this paper, the framework is tested from both adaptation and performance aspects by a simulated control application.关键词：real-time system;cloud computing;adaptation framework;real-time component434|772|0更新时间：2024-06-05
- 摘要：Virtual server environment plays an important role in managing distributed files system. It can finish large scale computing tasks, cut down hardware expenses, lessen consumption of space and power by integrating several virtual servers. Server virtualization technology can make a virtual server to migrate from one machine to another at run time. This important feature of server virtualization is dynamic migration that is realized by shared storage. With dynamic migration, many servers' planned hardware maintenance which causes service interruptions can be avoided. When the numbers of virtual servers increase, shared storage performance becomes system bottleneck. In this paper, a virtual server environment based on Lustre cluster file system is build to realize shared storage of server virtualization. Experiment results show that the virtual server's I/O performance gets remarkable promotion and less time consuming.关键词：cluster file system;server virtualization;kernel-based virtual machine475|1031|0更新时间：2024-06-05
- 摘要：Resource monitoring in cloud computing environment is a significant part of cloud computing platform for resource management, which provides a basis for resource allocation, task scheduling and load balancing, etc. According to the characteristics of cloud computing resources, this paper put forward a monitoring model based on dynamic period and event-driven, and it has excellent timeliness, robustness, loose coupling and scalable by combining dynamic period and event-driven monitoring. The model can collect real-time resource monitoring information, and discover the faults of cloud computing environment timely and meet the need of cloud computing platform.关键词：cloud computing;resource monitoring;dynamic period;event-driven576|755|0更新时间：2024-06-05
- 摘要：Describes and analyzes the problems and needs of IT operation monitoring and management under the new environment of cloud data center, researches the development and reform of IT operation monitoring and management technology, summarizes and puts forward the ideas solution: cloudization, three-dimensional, intelligence, integration and shared services.关键词：cloud computing;operation and monitoring;shared service;development and reform425|1222|0更新时间：2024-06-05
Cloud computing column
- 摘要：For dealing with the problem of ocean data's interactive visualization, this paper proposes an interactive visualization platform architecture based on cloud computing. It inserts GPU, MPI parallel computing into MapReduce mechanism of Hadoop to realize the parallel processing of large-scale ocean environment data sets, such as data retrieval, data extraction, data interpolation, analysis of characteristics' visualization, so that the massive data's visualization can be processed in the remote interactive way. The experiment results show that the visualization platform architecture can combine MPI, GPU with MapReduce effectively to meet the needs of ocean data's interactive visualization.关键词：ocean environment information;cloud computing;GPU;visualization659|1256|0更新时间：2024-06-05
Cloud computing column;Cloud computing column
- 摘要：With the exposure of many shortcomings in nowadays internet, there have been lots of studies deeply in the future network around academic circles recent years. Amount these studies, establishing a CON（content-oriented network）is one of the representative researches. CON which is attracting many researchers' attention no longer uses the traditional communication mode called “end-to-end”, but focuses on what it transmits. In this paper, we present a comprehensive survey on the key technologies of CON. The study background of CON following with several key technologies including naming, routing, security and cache are introduced. At last we make a prediction on the research focus of future CON and the development direction.关键词：CON;network system architecture;future network579|1391|0更新时间：2024-06-05
- 摘要：Based on the fundamentals and advantages of fuel cell backup powers, the innovation and enhance of the fuel cell backup power over general backup power is technically and economically discussed and analyzed. An outdoor telecommunication cabinet solution with fuel cell backup power is illustrated and further research direction on energy saving and emission reduction from fuel cell power in telecom application is suggested.关键词：fuel cell backup power;telecom base station;energy saving and emission reduction364|1306|0更新时间：2024-06-05
- 摘要：This paper introduces the development of domestic and abroad internet TV industry and analyzes the system framework and key technologies of internet TV. From the perspective of telecom operators, operating strategies and market promotion are discussed for making use of advantages of telecom resources to develop reasonable technology strategy.关键词：internet TV;system framework;key technology;operating mode403|1606|0更新时间：2024-06-05
- 摘要：This article initiates the security problems on the domain name system, analyzes the DNSSEC technology and its security performance, introduces the process of DNSSEC and the trend in the global, points out the problems and deficiencies of the DNSSEC, and finally provides the strategy suggestion on the DNSSEC deployment in China.关键词：domain name system（DNS）;DNSSEC;security protection;internet governance481|1407|0更新时间：2024-06-05
summarize
- 摘要：This paper analyzes the evolution of video technology, studies of analog and digital development of network technology, analyzes the advantages and disadvantages comparison of different network technology, describes using the city optical network based on PON technology has more advantages in the application of video monitoring network system. At the same time, it is concerned about the operation and maintenance and technical problems and explore solutions of PON to carry video system.关键词：EPON;OLT;ONU;video monitoring network system329|656|0更新时间：2024-06-05
Shanghai telecom construction of "urban optical network"
- 摘要：With the rapid development of mobile communication technology, it is believed that the 4th generation technology is approaching. The convergence of heterogeneous network becomes significant for network development, and it is also considered as the main feature of network structure. On the other side, Wi-Fi technology is also very important for heterogeneous network, it develops constantly recently. This article discusses how heterogeneous network and Wi-Fi technology improve the convergence of networks, and addresses the issue of large quantity of data service.关键词：heterogeneous network;IEEE 802.11ac;data flow;network convergence144|340|0更新时间：2024-06-05
- 摘要：FTTH has become the main solution of the last mile access network construction. As the development of FTTH network, the energy consumption of the access network must be focus on. But now the effective means of energy consumption assessment for FTTH network is lack. According to research and analysis of the energy consumption influencing factors, this paper builds a FTTH network energy consumption model. It can realize visualization and assessment of FTTH network energy consumption, and provide recommendation and reference for operators to achieve saving energy and emission reduction.关键词：FTTH network;energy consumption assessment;energy consumption model375|555|0更新时间：2024-06-05
- 摘要：QoS guarantee is an important component of the LTE network, the OSS must be able to support the operation and management related to the QoS guarantees. This paper analyzes the QoS implementation mechanism in LTE deeply, clarify substance and the relationship among the bearer ID, bearer profile, bearer banding and performance measurement, and points out the basic method of how to achieve end-to-end resource association and performance statistics. The work can provide good reference for the establishment of the OSS that support LTE QoS guarantee.关键词：LTE;QoS;OSS313|685|0更新时间：2024-06-05
- 摘要：As high-tech innovation being the foundation of innovation in China, and the initiative of the development of enterprises, according to the characteristics of telecoms, the paper describes the main targets of high-tech innovation, and further explores the system and mechanism issues in telecoms for high-tech innovation,such as divisions and structure organisations,the source of high-tech innovation, R＆amp;D dicision making, the innovation processes, and the applications of the results of innovation, etc.关键词：high-tech innovation;content;system;mechanism308|528|0更新时间：2024-06-05
- 摘要：With the acceleration of urbanization, the intelligent city plays an important role to promote the integration of the city informatization and industrialization, enhance urban competitiveness and improve life quality of residents. Building the intelligent city is a vast system project. In this paper, according to mainly trend construction mode of the intelligent city in China, facing current telecom operators'design and present situation for the construction of the intelligent city, the author proposes that using aggregation service to discuss the development train of the intelligent city. Finally, from the perspective of government, the author makes some suggestions for co-competition among telecom operators around the intelligent city.关键词：intelligent city;telecom operator;co-competition364|1288|0更新时间：2024-06-05
- 摘要：This paper summarizes the IT service management implementation present situation, analyzes the construction and operation of the cloud computing environment resource pool for the IT service management system bringing challenges, and puts forward the implementation strategy for the adjustment and optimization of IT service management from the aspects of the management requirements, pvocess design, system monitoring and resource deployment scheduling.关键词：ITIL;ITSM;resource pool317|1221|0更新时间：2024-06-05
- 摘要：This paper introduces the method to use Protocol Buffer to update data in enterprise cloud contacts, and compares the time and size of XML（extensible markup language）, JSON（JavaScript object notation）and Protocol Buffer, through the test data.关键词：Protocol Buffer;Android;performance457|726|0更新时间：2024-06-05
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