最新刊期
卷 29 ， 期 1 ， 2013
- 摘要：The main characteristics of new generation transport network were presented firstly, and transparent networking technologies, in particular OTN, as an initial transparent networking technology for new generation transport networks, were also analyzed. Additionally, focusing on the development and challenges of 100 Gbit/s and beyond 100 Gbit/s WDM systems, the development of optical fiber and fiber-based multiplexing technologies were discussed.关键词：new-generation transport network;OTN;100 Gbit/s;ROADM680|1799|0更新时间：2024-06-05
Viewpoint focusing
- 摘要：The deployment of hierarchical heterogeneous cellular network（HCN）using overlapping small cells is identified as one of the major components in solving future cellular capacity and energy efficiency problems. An enhanced networking scheme for future HCN was proposed, accomplished by adopting the phantom cell concept that splits the C-plane and U-plane. The goal is to achieve higher capacity using higher frequency bands over a range of deployment scenarios including mobility,network density,traffic handling and network complexity.The implementation related techniques and further extension of the scheme were also provided.关键词：hierarchical heterogeneous cellular network;LTE/LTE-Advanced;phantom cell695|1323|0更新时间：2024-06-05
- 摘要：RTCWeb is a key technology to realize free plug-in web client. Compared with traditional client, RTCWeb client enables more convenient operation, more flexible development, and detachment from the operating system and platform. It is a better choice for service developers, network operators and terminal users. This paper firstly introduced RTCWeb's communication model and key technologies, then proposed the conception of RTCWeb's merging with IMS and gave the specific solutions under the conception, finally gave a summery and a prospect for future evolution of IMS based RTCWeb system.关键词：IMS;web client;real-time communication;free plug-in801|1109|0更新时间：2024-06-05
- 摘要：A great challenge to wireless sensor network（WSN）is how to protect privacy from disclosing during application in WSN as well as obtain accurate results. In recent years, researchers at home and abroad have done much work on privacy preserving in WSN. This paper surveyed the general privacy preserving methods from two aspects of location privacy and data privacy in WSN and analyzed their theories and characteristics. A new method based on multi-notes phantom routing protocols and ECC homomorphic encryption was proposed, which could protect location privacy and data privacy at the same time. Compared to current methods, better privacy will be protected and less energy will be consumed.关键词：wireless sensor network;privacy preservation;phantom routing;ECC homomorphic encryption1044|1872|0更新时间：2024-06-05
- 摘要：For realizing SlAP monitor in LTE network, the implementation scheme of SlAP protocol monitoring module was designed to cope with the insufficiency of protocol decoding and CDR synthesis research scheme effetiveness, on the base of introducing LTE network monitor software platform. The scheme adopted the thought of separating definition and realization for message decoding, improving the code independence and portability. The use of Hash index and overtime management mechanism of SlAP message synthesis ensured the accuracy and validity of synthesis. The scheme had been successfully applied to LTE network monitor. It has been proved to have a good effect by simulation data for testing.关键词：LTE;SlAP;protocol monitor;Hash index622|1723|0更新时间：2024-06-05
- 摘要：As the requirement of network security application increases, more and more redundant patterns appear and the patterns' amount of intrusion detection system（IDS）raises. The redundant patterns affect the coefficient of utilization of system's resource, and the performance of IDS directly. The inclusion relationship for expression was classified, and the algorithms eliminating redundant expressions were proposed. Then, to optimize the BitCount algorithm, a theoretical O（1）algorithm（MaskVeri）for mask verification was designed. The experimental result shows that MaskVeri performs better than other programming realization.关键词：expression matching;mask verification optimization;expression elimination486|780|0更新时间：2024-06-05
- 摘要：The problems existing in the original cloud storage model has plagued the industry for many years, to realize the true sense of the data privatization in the static data encrypted storage process is able to ensure data security and protect data owners' interests. Cloud storage applications for the current secure storage of user data is able to improve data security. Taking Amazon S3 as an example, the general problem in static data security was analyzed. A new set of cloud static data encryption and storage solution, separated key S3, was designed, and a new key management method was also designed. The new technology absolutely accomplished the security of static data in the cloud. Additionally the data security analysis and prospect on next research was given.关键词：cloud storage;separated key;static data;data security;master key466|1278|0更新时间：2024-06-05
- 摘要：Existing VANET network broadcast transmission protocols have low channel utilization, and easily lead to channel congestion and other issues, so improved protocol assisted by roadside- infrastructure was proposed. It used roadside-infrastructure to cluster the vehicle. In the clustering, every sending data frame added the vehicle number to its head and each vehicle node received and transmitted the packets selectively. The results show that the improved protocol is able to improve the transmission channel usage effectively, and the effective information transfer rate is able to be increased by 20%.关键词：VANET;broadcast protocol;base-station assisted;receive in turn550|836|0更新时间：2024-06-05
- 摘要：This paper introduced the application range of the private cloud, discussed the characteristics of the self-developed and business and open source solutions, and analyzed the main advantage of the open source solution, then compared the mainstream projects of the open source cloud computing, such as Eucalyptus, OpenStack, OpenNebula and Nimbus, studied the structure of OpenStack mainly. Based on this, this paper presented the construction example of private cloud computing platform based on OpenStack, which major processes included configuration of base environment, components installation of Nova, Glance, Swift, Keystone and Horizon, deployment of virtual machines, and finally discussed the platform application examples in the cloud computing software testing.关键词：private cloud;open source system;OpenStack;KVM517|2732|0更新时间：2024-06-05
- 摘要：Analyzing the disadvantage of the two existing propylene-based service composition algorithms used in the converged process between telecommunication services and web services, a novel semantic-based double-chaining automatic composition algorithm was presented. Also, a distinct virtue in less time cost and higher composition success rate of the proposed algorithm than that of these existing related algorithms was proved by discussing its performance in detail. Additionally, a composing scenario of converged service was given to support the proposed DCA algorithm.关键词：semantic;NGN converged service;service composition algorithm;double-chaining composition algorithm312|570|0更新时间：2024-06-05
- 摘要：To save network node energy consumption and reduce data transmission delay in streetlight monitoring system, a chain routing algorithm for wireless sensor network（CRASMS）was proposed. The algorithm divided the monitoring region into several clustering regions according the information of nodes and monitoring region, successively and circularly selected a node to the cluster head node in each clustering region, established the star network in each cluster by the communication of cluster head node and sensor node. Finally, cluster head node received the data of sensor nodes, used the data fusion algorithm to reduce data redundancy, transmitted the fused data to sink node with multi-hop routing among cluster head nodes and transmitted the client's commands to the controlled nodes. The simulation results show that CRASMS algorithm keeps the advantage of PEGASIS algorithm in terms of energy consumption and the advantage of LEACH algorithm in terms of data transmission delay, overcomes the lack of PEGASIS algorithm in terms of data transmission delay and the lack of LEACH algorithm in terms of node energy consumption. It keeps the average node energy consumption and the average data transmission delay at a low level. Under certain conditions, CRASMS algorithm outperforms LEACH and PEGASIS algorithms.关键词：wireless sensor network;chain routing;streetlight monitoring;energy consumption;delay643|1092|0更新时间：2024-06-05
- 摘要：For increasing severe traffic conditions, the traditional transportation technology has lost its effectiveness. Intelligent transportation system is a transportation service system based on modern electronic information technology, which is able to use the existing transportation infrastructure effictively, reduce traffic load and environmental pollution, ensure traffic safety and improve transport efficiency. Hence, intelligent transportation system has become a hot spot of research. Based on the technology of LTE and IPv6, application technology of wireless internet of things for highway intelligent transportation system was studied. The detailed framework and implementation plan of highway wireless internet of things were presented, and the corresponding feasibility was demonstrated.关键词：intelligent transportation system;wireless internet of things;LTE;IPv6407|969|0更新时间：2024-06-05
- 摘要：Aiming at the cooperative communication systems, a threshold-based decoding algorithm was proposed. A method for threshold-settings was given based on the analysis of the probability distribution of equivalent noise. The operation complexity of the proposed algorithm was analyzed theoretically. Both the error rate performance and the operation complexity were then simulated, and compared with existing algorithms. Furthermore, a strategy of dynamic threshold-settings, which was given on the basis of the analyses and simulations above, was applied to the proposed algorithm. The simulation results show that the proposed algorithm based on the dynamic threshold-settings is able to alleviate the cost of decoding resources in low SNR and get the optimal error rate performance in high SNR.关键词：cooperative communication;threshold-setting;decoding algorithm;performance analysis259|574|0更新时间：2024-06-05
research and development
- 摘要：In the research of physical layer security, cooperative jamming is a special and novel research area. The artificial jamming signal is introduced into the wire-tap system to interfere the eavesdroppers and decrease their signal-to-interference-plus-noise ratios, then the system secrecy capacity can be improved. The background and state-of-the-art of cooperative jamming were reviewed and the future potential research topics were pointed out. Currently, the artificial jamming signal can be divided into four categories. Additionally, in the research of cooperative jamming, self-jamming and introducing jamming systems are investigated with simple and complex scenarios.关键词：wireless communication;physical layer security;wire-tap channel;cooperative jamming397|683|0更新时间：2024-06-05
Overview
- 摘要：The issue of selection of LTE's duplex mode for CDMA operator was discussed. Based on detail analysis on involved factors, it was pointed out that CDMA operator might suffer some serious problems if TDD mode was selected.关键词：network evolution;CDMA;LTE;TD-LTE232|694|0更新时间：2024-06-05
- 摘要：The basic concept of OTN-based IP offloading was introduced, then the characteristics and advantages of IP offloading were analyzed. The key technologies related to the IP offloading were also discussed, including internetworking interface, connection establishment mode and OAM. Additionally, the economics of OTN-based IP offloading was analyzed.关键词：IP;OTN;IP offloading302|639|0更新时间：2024-06-05
- 摘要：Online charging system is a complex system with multi-application scenarios, which has high demands on performance. The traditional performance evaluation mode with individual indexes can not reflect the advantages and bottlenecks of the overall performance of OCS. A set of performance evaluation method for different test scenarios of OCS was proposed, which provided an effective algorithm to evaluate the performance indicators of different test scenarios. With this method, testers are able to get the overall performance of OCS and locate the bottlenecks of OCS preliminarily.关键词：OCS;complex performance;business scenario;performance index;assessment of project bidding315|716|0更新时间：2024-06-05
- 摘要：By appling SDN technology in data center, the resource was aggregated to become an ability pool through abstracting the hardware resource by using the intelligent software, which makes network more like software and more agility, and provides automatic, safe, flexible and effective scheduling resources ability to meet the cloud computing data center. The solution makes up for the cloud computing in the short plate of network virtualization, makes calculation, storage and network more integrated, and realizes fully automated deployment of resource, real-time resource scheduling and rapid network troubleshooting, and has the potential to increase new business at any time, speeds up the network innovation rhythm, and provides a new option for cloud computing center operators to reduce the maintenance cost and improve user experience.关键词：software defined network;multi-tenant;data center;network virtualization372|1213|0更新时间：2024-06-05
- 摘要：By the establishment of IDC space, network, cloud computing various levels of resource element model, fusion process, data, operation and service, a standard, and loosely coupled IT support fusion architecture was designed and built, which laid the foundation for IDC intensive operation. On the basis of depth study of the IDC resource model, service mechanism and characteristics of products, IDC resources centralized control system and multi-wave cross domain construction scheduling process were designed. The application of IDCIMS in IDC intensive operation was focused on.关键词：IDCIMS;topology control;SOA;cloud data center339|1447|0更新时间：2024-06-05
- 摘要：According to the plurality and individuation of the customers'demands, a customized telecommunication product configuration model was established on the basis of the modular product family structure GBOM. The configuration modules were categorized as basic configuration modular, essential modular and optional modular complying with the configurability of telecommunication products. Five-element information expression model was also constructed. Additionally, the attributes and variable of the module, module configuration rules and the match of module variables were analyzed. Based on customers' demands, the customized telecommunication product configuration was completed by determining and assigning values to the parameters of each configuration module in GBOM and constraint solving.关键词：modular;product family;GBOM;telecommunication product;configuration model;configuration module408|992|0更新时间：2024-06-05
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