最新刊期
卷 30 ， 期 4 ， 2014
- 摘要：With the development of new applications and technologies,carriers are facing more challenge on operating network, especially facing new requirement on improving network intelligence. Beginning with technology trend of network intelligence capabilities and software defined networking, the main features of SDN-based network intelligence capability enhancement（S-NICE）were described, as well as the infrastructure designed and deployment solutions. The experimental cases in current network were also discussed.关键词：next generation network intelligence capability enhancement;software defined networking;S-NICE698|1369|0更新时间：2024-06-05
- 摘要：SDN is a new network technology. Open programmable SDN concept can be perfectly combined with intelligent network pipeline demand. Research on S-NICE architecture has explored in this field. The on demand custom routing system which is a kernel system in the S-NICE architecture was described from several aspects, such as key technologies and system design, deployment and verification, as well as scenarios.关键词：software defined networking;network intelligence capability enhancement;S-NICE;on-demand;smart routing776|1541|0更新时间：2024-06-05
- 摘要：SDN-based IPv6 transition technology was researched. A solution on how to introduce SDN-based IPv6 transition technology in operator network was firstly proposed, including application scenario, requirements, overall architecture, key technologies and major deployment requirement. This technology is quite important for operators to introduce SDN-based IPv6 transition in operator network.关键词：software defined networking;IPv6;transition technology689|1549|0更新时间：2024-06-05
- 摘要：With the rapid development of internet, IPv6 as the next generation internet protocol has been widely concerned. At present, a series of IPv6 experiments have been done, and IPv6 technology has gradually been deployed from laboratory to the application. DS-Lite is recognized as a long-term evolution scheme. The deployment of DS-Lite was carried out, and breakthrough on the key technical difficulties was achieved, such as IT system upgrading, operation process adjustment etc, which may lay the foundation for the IPv6 scale commercial. Aming at the technical difficulties on DS-Lite network deployment, some feasible solutions were put forward.关键词：IPv6;commercial deployment;DS-Lite;address family transition router;customer premise equipment;basic bridging broadband;carrier-grade NAT607|1282|0更新时间：2024-06-05
- 摘要：An wireless catching and transferring system of next generation network was introduced. With the advanced technology of IPv6, IEEE 802.11n and cloud computing, the system provided an effective solution, meeting the needs of professional journalists to catch and transfer quickly at large games and meetings.关键词：next generation internet;IPv6;wirelss catch and transfer;cloud computing709|855|0更新时间：2024-06-05
Special subject:Next generation Internet
Newsletter
- 摘要：The research progress and contributions about the fundamental theories and key technologies of collaborative heterogeneous underlaying cellular networks were introduced. The fundamental theories include the architecture, capacity region, connectivity problem of the collaborative heterogeneous underlaying networks, while the key technologies consist of interference management, wireless resource management, and exploration and utilization of vacant radio-frequency spectrum. The current study shows that D2D communication in collaborative heterogeneous underlaying cellular networks will become the key technology in the next-generation cellular communication systems because it can further improve the spectrum efficiency and system capacity in wireless communication networks.关键词：collaborative heterogeneous underlaying cellular network;D2D communication;interference management;wireless resource management767|1519|0更新时间：2024-06-05
- 摘要：It is very easy for the nodes in named data networking to ignore the neighbor nodes. To solve this issue, a leading routing mechanism for neighbor content store was proposed. Firstly, through building the interest clusters, the nodes were partitioned to different reigns to announce the information of content store. Secondly, the packets and the fast routing tables were designed. Finally, the best path was chosen to send the interest packets. The theoretical analysis and simulation results show that, this mechanism adequately uses the neighbor content and effectively decreases the average network delay. The server load is reduced by 30%.关键词：named data networking;content routing;interest cluster;neighbor content store667|931|0更新时间：2024-06-05
- 摘要：In stateless address auto configuration, node needs to carry out duplicate address detection before using a new IP address. In the detection process, once a malicious node claims that the resolve IP address is occupied, the node's address configuration will fail. For this case, WAY（who are you）mechanism as a defensive approach was proposed. WAY mechanism uses reverse address confirmation, self-declaration and WAY-table inspection to filter the spoofing packets, which make attackers' cost increase and cannot carry out secondary attack. The experiments show that WAY mechanism can effectively compensate the security flaws of neighbor discovery protocol, significantly increase the success rate of stateless address auto configuration.关键词：network security;address resolution;IPv6;stateless address auto configuration;duplicate address detection530|879|0更新时间：2024-06-05
- 摘要：A new lightweight S boxes based on the inverse mapping in Galois field which called suboptimal-S boxes （SOPT-S boxes）with excellent performance in cryptology was constructed. It is shown that the SOPT-S boxes perform better in cryptographic properties such as differential uniformity, algebraic degree and avalanche effect than PRESENT, of which the algebraic degree achieves to n-1, avalanche effect to 1/2 and both of them achieve to the best, besides, it has an equivalent nonlinearity compared with PRESENT. In addition, the hardware overhead is also the same as the latter, so that it can provide a reference for the designing of nonlinear layer of lightweight cryptography algorithm.关键词：lightweight cryptography;block cipher;inverse mapping in Galois field;SOPT-S box459|921|0更新时间：2024-06-05
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Time Division Switching Scheme and Performance Analysis of Low Orbit Quantum Satellite Communication
摘要：Low orbit quantum satellite system is used to realize a worldwide secure communication. To solve the problem of multiple quantum users' access and information transmission in satellite coverage, a multi-beam time division quantum switching scheme was proposed, and a detailed description of the structure and working process of the time division quantum switch were given. In different time slot, the switch set up a quantum entanglement swapping channel for different users to transmit their quantum information. To overcome the delay in satellite-earth link and satellite-satellite link, a switching and transmission method was proposed based on quantum channel byte, which decreased the average qubit transmission delay for single time slot. Performance analysis shows that the number of time slot and the length of quantum channel byte have the key influence on the user number, the traffic and the call of loss. In certain channel conditions, by rational designing of these parameters, the quantum satellite communication system can meet the demanded service requirements.关键词：quantum communication;satellite communication;time division multiple access;switching network;quantum entanglement340|746|0更新时间：2024-06-05 - 摘要：A wireless access multimode gateway system was developed in order to solve the problems of the network share and external network access for wireless devices equipped in the cars to form the internet of vehicle（IoV）. By the gateway system, the wireless local area network（WLAN）can be established. The terminals within this WLAN can access the public mobile communication network such as 3G even 4G and external internet in the vehicles. First, the system architecture was given. Then, the design and development of the wireless access multimode gateway were described in detail including the hardware platform and application software. Meanwhile, the selection strategy of wireless access network was studied according to the different business classifications to obtain the corresponding weight distribution by using analytic hierarchy process, in order to achieve the optimum network performance. The test results show that the developed gateway accords with the design requests and has the reliable and stable performances.关键词：wireless access;multimode gateway;internet of vehicle;wireless local area network;public mobile communication network;network selection403|896|0更新时间：2024-06-05
- 摘要：A spectrum sensing algorithm using double eigenvalue limiting（DEL）distributions was presented. The difference between the maximum and the minimum eigenvalue was exploited as the test statistic. The double eigenvalue were used to estimate a threshold based on the double eigenvalue limiting distributions to heighten an accuracy of the threshold. Compared with the algorithm of single eigenvalue, the theoretical analyses demonstrate that the threshold estimated by DEL was less than its threshold and the performance of DEL was improved. In addition, simulations results show the proposed algorithm needs neither the prior acknowledge of the signal transmitted from primary user, nor the noise power in advance, and gains better performance against the short of sampling number than the difference between the maximum and the minimum eigenvalue（DMM）algorithm.关键词：spectrum sensing;random matrix theory;double eigenvalue limiting distribution;threshold estimation272|740|0更新时间：2024-06-05
- 摘要：With the rapidly developing of mobile internet and the commercial use of 4G, monitoring the service traffic becomes more and more important to operators. Firstly, a scheme for synthesizing xDR based on transport stream was given, after decoding preprocessing for the data of mobile packet network. Then the service identification and statistics of mobile packet network were implemented by using the complementary advantages for DPI（deep packet inspection）and DFI（deep flow inspection）technology. According to the test of current network data, this scheme works well for xDR synthesizing and service identification, with high efficiency and accuracy. It is of great significance to optimization of mobile packet network in 4G era.关键词：mobile packet network;DPI;services identification;traffic analyzing497|1056|0更新时间：2024-06-05
- 摘要：Aiming at the heterogeneous users and the inconsistent authentication mechanism for hybrid clouds, a design of united identity authentication and key agreement protocol for hybrid cloud was proposed based on bilinear pairings and key agreement mechanism, which could realize the distributed management and dynamic acquisition of security information of authentication and authorization policy. The theoretical analysis and experiment results show that the proposed protocol is safe and efficient, which can effectively prevent data tampering, identity forging, replay attacks and man-in-the-middle attacks. Else the proposed protocol provides a practical solution on identity authentication and key agreement in hybrid clouds with less computation and communication overheads.关键词：hybrid cloud;identity authentication;bilinear pairing;security338|951|0更新时间：2024-06-05
- 摘要：Different from conventional networks, DTN has several unique characteristics, such as node mobility, loose connectivity, and delay tolerability, etc. As mobile devices have become indispensable in daily life, there emerges a new interesting problem, which is how to take advantage of the portable and powerful facilities to share resources and information. The prevailing approach to process those queries is to use flooding methods because of their quick response and easy maintenance. However, this kind of approaches wastes a huge amount of communication bandwidth and battery power of mobile devices. To tackle this problem, an intelligence accuracy（IA） scheme was introduced to improve network query success rate. The IA scheme mimics natural behavior of human social networking features to promote efficiency of information collection. Experimental results show that the efficiency and effectiveness of the IA approach are as well as its scalability in a volatile environment.关键词：delay tolerant network;mobile device;information query;information accuracy;social network293|588|0更新时间：2024-06-05
- 摘要：A new approach that transfers the multi-class imbalanced problem into simple two-class imbalanced problem was proposed, and a mended SMOTE over-sampling algorithm to enrich the P2P concept was applied. The experimental results show the approach can efficiently improve the P2P identifying rate using the Naïve Bayes model.关键词：class imbalance;over-sampling;P2P traffic identification292|565|0更新时间：2024-06-05
Research And Development
- 摘要：The text visualization process was introduced at first, including information collection, preprocessing, visual presentation and interactive functions. Then based on the analysis of various Chinese text visualization tools, the visualization technology areas such as multi-based tag cloud, tree map, association and time sequences were researched. At last, the advantages and disadvantages of these techniques were compared from a few aspects and the various technologies applicable to the scene were pointed out. Text visualization can help users to better deal with the growing text information to improve the efficiency of data visualization and converted into efficiency benefits.关键词：text analysis;information visualization;text visualization;interaction interface589|2913|0更新时间：2024-06-05
- 摘要：A mathematic model was built-up to analyze ODN attenuation event detection in OTDR system of PON, and then combining the mathematic analysis and experimental result, the application value and necessity of wavelength-selective reflector in PON optical link test and diagnosis system were investigated. Based on operators' requirements, several implementations of reflector were proposed and analyzed, and technical requirements for reflector were given. Finally, the international and domestic standardization progress of reflector was introduced.关键词：passive optical network;optical time-domain reflector;optical link test and diagnosis;optical distribution network;reflector444|1264|0更新时间：2024-06-05
Overview
- 摘要：The analysis of the current operating environment and market competition of China's telecommunications industry were illustrated based on Porter's Five-Force model. On the 4G era, it will be emerged a new pattern of“3+N+N”of China's telecommunications market in future. Based on this market structure, in the 4G market, China's telecom market participants should adopt different business strategies according to their own conditions, such as differentiation, cost leadership and industry-specific focus, etc.关键词：4G era;telecommunication business;Porter's Five-Force model;business strategy753|1469|0更新时间：2024-06-05
- 摘要：Based on using distributed computing and distributed storage technology, the telecom operators' network data sharing platform based on Hadoop +MPP architectures was studied. By integrating various distributed network management data, the network basic data platform, application platform and unified control platform were built.关键词：distributed;big data;Hadoop;massively parallel processing;data sharing750|1158|0更新时间：2024-06-05
- 摘要：Combined with the features of telecom operator communications network, the security access technology from business platform to signaling network was discussed, and the key technology about business platform accessing security gateway was elaborated. The construction ideas about signaling security gateway was proposed.关键词：business platform;signaling network;business security gateway;message filtering service290|751|0更新时间：2024-06-05
- 摘要：To evaluate the user experience of IT systems, building up a user experience oriented IT key performance indicator architecture, which is the foundation of transferring the IT management from the infrastructure monitoring and analysis to service monitoring and analysis. Based on the lot of real world's new requirements of the IT service management, the architecture of user experience oriented IT key performance indicator was analyzed and designed, and an application management effectiveness platform or system was implemented, via the platform, could automatically and effectively monitor and analyze the IT systems.关键词：user experience;IT indicator;monitoring;indicator model356|1533|0更新时间：2024-06-05
- 摘要：The structures of all types of cellular mobile communication base station equipment and the frequency configuration characteristics were briefly introduced, and the online RF index test method and solution of test failures were discussed. Then the test results and emphasized difficulties in practical work were analyzed and evaluated. Finally, the online RF index test of cellular mobile communication base station equipment in the future was prospected.关键词：radio;cellular base station;test;online RF index362|787|0更新时间：2024-06-05
- 摘要：The double（multiple）carrier private network is the only way to solve WCDMA network covering quality and user perception in the high-speed rail.As to ensure high-speed rail WCDMA network quality and user experience， the strategies such as neighboring configuration, key parameter strategy, business distribution, frequency reuse, fall back strategy and so on, were analyzed and discussed. It provides a basis and reference with the key issues and related strategies for the follow-up high-speed rail WCDMA network construction,planning,design and optimization.关键词：dual-carrier private network;neighboring configuration;business distribution;frequency reuse;fall back strategy343|747|0更新时间：2024-06-05
- 摘要：Aiming at problems of AHP, the weight determining methods of the multi-index comprehensive evaluation system was studied, and a performance evaluation method of power distribution and utilization communication network based on the improved TOPSIS was proposed. The method puts forward that combine SAW, TOPSIS with the improved AHP to evaluate the performance of the power distribution and utilization communication network. As the basic TOPSIS method cannot process the data on the perpendicular bisector, the TOPSIS method based on the relative entropy was proposed. The simulation results show that the improved TOPSIS method is more suitable for evaluating the sensitive indicators of electric communication network.关键词：AHP;three scale method;TOPSIS;relative entropy449|793|0更新时间：2024-06-05
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