最新刊期
卷 29 ， 期 9 ， 2013
- 摘要：With the development of network service and the expanding of network size, there are many problems of expandability and energy consumption in current network. A reconfigurable flexible network（RFN）architecture was proposed, which could carry the reconfiguration of service capability and green energy-saving, and the loose coupling layering model, networking architecture, and networking technology of RFN were given. By constructing or changing the mapping relationship between service capability and resource, the further evolution of upper layer service was supported flexibly. And green energy-saving could be achieved in network equipment manufacturing industry, network level and node level. Results show that, as a new architecture for future, RFN provides the ideas and methods for reconfigurable service and green network.关键词：computer network;network architecture;low power consumption;green energy-saving;reconfigurable flexible network842|1247|0更新时间：2024-06-05
- 摘要：Nowadays, WAN transmission process has a lot of duplicate data, these duplicate data make bandwidth of WAN to be serious wasted. In order to solve this problem, a redundant data elimination strategy based on application layer protocol identification（PI-RE）was put forward. Using the combination of data caching and the application layer protocol identification technology, the redundant data of WAN during transmission were found out, so that the same data transferred only once in WAN as much as possible, to reduce the redundant data transmission excessive waste of WAN bandwidth.关键词：computer network;redundancy elimination;protocol identification;data cache;cache management692|1031|0更新时间：2024-06-05
- 摘要：The location-based routing protocol RBVT-R was analyzed. Aiming at the defects of RBVT-R routing protocol during the process of routing establishment and packet forwarding, an improved algorithm of RBVT-R was proposed. This method has improved the flooding mechanism by attaining road traffic density independently during the process of routing establishment. A packet forwarding scheme based on direction and location forecast was proposed during the process of packet forwarding, and had solved the problem of repeated transmission of packets in the same section. The simulation results show that the proposed improvement strategy can effectively enhance the average packet delivery ratio and end-to-end delay.关键词：telecommunications＆information system;routing protocol;RBVT-R;flooding mechanism;packet forwarding724|870|0更新时间：2024-06-05
- 摘要：WebRTC technology has some good characteristics of open and standardized, simple and extendable, open sourced and free. The Web applications can be easily and quickly developed by calling the Web API which are provided by WebRTC technology and being standardized. Besides, the mobile clients and applications of real-time audiovisual communications with high quality can also be developed by fully exploiting the WebRTC core implementation library. The main technical features of WebRTC technology were summarized. Based on the summary, the technical analysis was given about how to design and develop the mobile client application and Web application based on WebRTC technology. The reference design and the implementation of the mobile clients applications, the Web application and the service platform which supports these two kinds of the applications were provided.关键词：WebRTC;mobile client;Web application;JavaScript session establishment protocol;STUN;TURN713|2295|0更新时间：2024-06-05
- 摘要：Smart grid must be open, distributed architecture, there are multiple internet, addressable, independently managed entity. Smart grid need to build a data communication network to support the exchange data freely and safely among all the components. The state grid corporation smart grid status and data communication network were described. IPv6 application is internal demand for smart grid construction, and the IPv6 technology applications in the smart grid is important, after that the standard development planning and existing international standards development status were analyzed, and finally the data communication network transition to IPv6 practical work was described. This analysis work for the next generation of internet technology in the smart grid application can be a reference for the smart grid development.关键词：smart grid;next generation internet;IPv6;information and communication technology683|2144|0更新时间：2024-06-05
- 摘要：The development of application and technology of international and domestic mobile internet were described, the mutual effect and relationship between mobile internet and IPv6 were analyzed, and the future of mobile internet and IPv6 were discoussed. In the end, from the views of technology, application and governance, some measures and recommendations on how to promote the development of mobile internet and IPv6 in the future were proposed.关键词：mobile internet;IPv6;IP596|1142|0更新时间：2024-06-05
- 摘要：It was still in the stage of exploration and experiment at home and abroad on how to unify the platform service, broadband network and diverse terminals to provide the integrated services although the cloud service mode accorded with the need of the medium-sized and small enterprises on the information development. A solution based on the cloud, pipeline and terminal architecture was proposed on the basis of the requirement analysis for the medium-sized and small enterprises. The overall framework, the technical architecture and the product hierarchy were put forward. The key implementation for the enterprise resource pool, virtualized application deployment and the cloud service security were discussed from the technical view and the practicing deployment architecture and its state of the art were provided.关键词：cloud computing;cloud service for medium-sized and small enterprises;cloud and pipeline and terminal architecture;enterprise resource pool;virtualized application deployment;cloud service security669|1422|0更新时间：2024-06-05
- 摘要：WLAN service non-sense authentication is one kind of automatic identification access authentication method, which can provide users with convenient WLAN access service, change the traditional cumbersome access ways, enhance the user perception. The current situation and the problems in access authentication of WLAN service were introduced, the IEEE 802.1x architecture and authentication method were analyzed, the key technology of non-sense authentication based on the EAP for principle,network structure and the certification process were discussed, and the main non-sense authentication method were compared.Finally,its application promotion were summarized.关键词：wireless local area network;service non-sense authentication;protected extensible authentication protocol;EAP-SIM／AKA;MAC608|1476|0更新时间：2024-06-05
- 摘要：The key challenges and problems of current mobile network were discussed, and a SDN-based mobile control network architecture was constructed to resolve the problem of processing big data produced by mobile international services. Further more,the new architecture will bring the advantages of load balance, service quickly deployments,network intelligent into mobile network.关键词：virtualized mobile core network;software defined networking;converged547|1137|0更新时间：2024-06-05
- 摘要：RPKI is a PKI designed to support validation of claims by current holders of internet number resources （IPv4 addresses, IPv6 addresses and AS numbers）, which is employed to establish a secure inter-domain routing system. However, the deployment of RPKI has its own risks falling into the category of operations and management. To give countermeasures, local trust anchor management for RPKI was introduced to build RPKI safeguard. A brief introduction to RPKI safeguard based on local trust anchor management was given, its shortcomings were analyzed and hence the potential research points of RPKI safeguard for the coming future were presented.关键词：internet number resources management;security of inter-domain routing;network management;network operation649|1256|0更新时间：2024-06-05
- 摘要：The key technology about smart network in mobile internet environment was described. Awareness, PCC, openness were the key characters of smart networks. Awareness capability is the understructure, PCC is the core technology, and open the network capabilities to terminal and service will provide better user experience and more services.关键词：smart pipe;mobile internet;awareness;policy control and charging;openness531|1173|0更新时间：2024-06-05
- 摘要：As the fast growing of WLAN's access point（AP）, reducing power consumption of large amount of AP became an important issue in telecommunication industry. Many similar products test methods and standards in power consumption area which proposed by different nations and organizations were referred. The evaluation method and requirement dictator of AP power consumption were researched. A timing weighted method was used to module the power consumption of the AP. In addition, this research method was used to test quantities equipment under different types and working status of existing network equipment, the advice of energy saving was provided.关键词：WLAN;AP;energy efficiency;power consumption499|600|0更新时间：2024-06-05
- 摘要：Combining network operators resource advantage, using its unique smart pipe technology, how to build application supermarket on this intelligent network platform was elaborated, a new platform for the mobile application was built, a new business model was proposed.关键词：mobile applications supermarket platform;smart pipe;App Store;SmartPass474|878|0更新时间：2024-06-05
- 摘要：With the gradual improvement of smart pipe system and the constant enrichment of its peripheral application system, higher requirements are raised for the data-providing capability and the data quality of the multidimensional awareness system. Based on the study of infrastructure of smart pipe system, a new design scheme was put forward to deploy data application sub-layer. This scheme carried the“data-concentrated, application-distributed”features and could provide data support for the bearer control layer and the business application layer with the purpose to perfect the architecture of the smart pipe system and further strengthen application capability of smart pipe data.关键词：smart pipe;multidimensional awareness;data warehouse;policy control;data application432|729|0更新时间：2024-06-05
- 摘要：A kind of IMS network architecture based on P2P content switching was proposed by investigating 3GPP and TISPAN standards. Three kinds of applications and relevant deployment recommendations were also given based on the network architecture, which provided a better reference for realizing the streaming media service and controlling on P2P service based on IMS network.关键词：IMS;P2P;content delivery network;streaming media;control564|674|0更新时间：2024-06-05
- 摘要：By redefining the reserved CU bits in IPv6 header traffic class field and the structured code of IPv6 flow label,the region information, application information, port number or other information were defined. The capability of identifying traffic type based on flow label code value was improved, the way to use the IPv6 flow label for differentiated service in IPv6 transiting network was discussed.关键词：IPv6;flow label;structured code;QoS503|1521|0更新时间：2024-06-05
- 摘要：PCC is the abbreviation of policy and charging control, which was introduced in 3GPP R7 and now it is in R12 stage. Policy control and flow based charging is the main function of PCC. The architecture, the main network elements of PCC deployed in CDMA network were introduced, and also some business scenarios were depicted. At last the evolution strategy of PCC from CDMA to LTE was provided.关键词：smart pipe;policy and charging control;PCRF;PCEF;PDSN;SPR;CDMA409|936|0更新时间：2024-06-05
- 摘要：In domain name system（DNS）, in order to alleviate the load of root servers, recursive servers cached some resource records（RR）. If communication link to root server（or other authoritative servers）broke due to network and other reasons, the cache of RR in recursive server decided the quality of resolving services（QoRS）. It was explored that factors impact QoRS and how through theoretical analysis and mathematical modeling.关键词：domain name system;quality of resolving service;mathematical modeling;recursive server387|1445|0更新时间：2024-06-05
research and development
- 摘要：EU, China,South Korea and other regions and countries have set up group to study the fifth-generation mobile communications, proposed technical objectives and research directions. The fifth generation mobile communications will provide faster access speeds, wider bandwidth, more flexible configuration networking. Three aspects of the fifth generation mobile communication systems, i.e. technology, networking, application were studied, and some new research directions, new forms of self-organizing network architecture and future application prospects were presented. 5G mobile communications in China will provide broad opportunities to industry upgrade.关键词：the 5th generation mobile communication;NoLA;wavelet wireless communication369|1050|0更新时间：2024-06-05
- 摘要：Recently, following cloud computing, SDN becomes the network technology which the academic and industry most concerned about. Firstly, the origin, concept and effects to networks of SDN were introduced. Then the development of the architecture, core technologies and ecosystem chain of SDN were described. Finally, the major challenges and likely future were explored.关键词：software defined networking;OpenFlow;open networking844|4006|0更新时间：2024-06-05
- 摘要：WebRTC technology enables audio, video communication and file sharing services over web browsers without installing add-ons, which improves the convenience of such applications greatly. Its openness and open source policy will simplify and facilitate the development of applications. WebRTC technology was introduced, and then the trend and influence on operator's communication services were analyzed. A comparison and three ways of combination with IMS were depicted as well. At the end, a summary of research topics and overview of future development were given.关键词：Web real-time communication;RTCWeb;IP multimedia subsystem;voice over IP730|1523|0更新时间：2024-06-05
- 摘要：Security related SDN architecture was investigated, including SANE、Ethane, etc., then current state on security requirement analysis in SDN was reported, which was separated into two parts, one was between application plane and control plane, and the other was between control plane and data plane. Subsequently, the mechanisms of security applications in SDN were discussed, especially the resolutions on application authentication and authorization using OAuth and ABFAB framework. In the end, a summarize in policy conflict resolution and security implementation were given.关键词：software defined networking;security;authentication;authorization350|994|0更新时间：2024-06-05
- 摘要：The accurate network planning and optimization was based on good radio propagation model for the particular wireless environment and specific frequency.Several types of LTE-based propagation models were reviewed under the three kinds of propagation model such as empirical model, semi-empirical model and deterministic model. A comparison was made between different proposed propagation models that would be used for the LTE. Further, attenuation loss for the different propagation models under the same conditions was listed. Lastly, a good propagation model choice strategy for the TD-LTE in dense urban scene was presented.关键词：LTE;empirical model;semi-empirical model;path loss438|2140|0更新时间：2024-06-05
- 摘要：The background and the threats of relay were introduced. The security problems about relay node and related security requirements were analyzed. Based on these requirements, some security solutions were made. These solutions can make relay more secure.关键词：wireless communication;security;relay;authentication;encryption290|932|0更新时间：2024-06-05
Overview
- 摘要：The development of packet enhanced optical transport network（POTN／PE-OTN）technology was put forward to meet the rapid growth of bandwidth demanding and multi-service providing. The features and development status of POTN／PE-OTN technology were introduced. The main application scenarios of POTN／PE-OTN technology in the MAN were analyzed. And the possible technical solutions were also explored.关键词：packet enhanced optical transport network;application analysis;optical transport network358|1357|0更新时间：2024-06-05
- 摘要：Based on analyzing the present situation of the Xuzhou metropolitan area network, the redundancy and standby technology to solve the single points of failure for BRAS was presented and a detailed scheme was designed. The information synchronization between main and standby BRAS and redirect for the flow guide based on tunnel technology were used to realize seamless switching between main and standby BRAS. Even the BRAS and its link failed, the broadband was in normal use.关键词：broadband remote access server;redundancy;standby;VRRP;BFD395|1163|0更新时间：2024-06-05
- 摘要：Based on 3GPP evolution background and pooling technology of 3GPP convergent core network analysis, technical challenges and the corresponding solutions were discussed, including the network coverage planning and network identity mapping schemes, and the comparison between schemes was conducted, finally suggestions were given on the network convergent pooling strategy for the present network deployment.关键词：EPC;pooling;mobility management entity;serving GPRS support node571|819|0更新时间：2024-06-05
- 摘要：In order to follow the development trend of mobile internet and improve business income, it is necessary for communication operators to push flow management completely. A typical business scene about flow management was analyzed, a kind of double-core model related to intelligent pipe and intelligent management to realize flow management was proposed and a realization mechanism of model was given. This mode is mainly made up of pipe control node and management platform node. It is verified by the application result of project experiment that this model can support communication operators to realize flow management efficiently.关键词：flow management;intelligent pipe;intelligent management287|1368|0更新时间：2024-06-05
- 摘要：The service characteristics of the local transmission network access layer were firstly analyzed. The services of the access layer would be diversified and had higher bandwidth for carrying the services of the LTE backhaul, the OLT uplinks, and the private lines for big customers, the smart city services and so on. Then the features of the access layer OTN technology were briefly described, which were the large-bandwidth transparent transmission capability, multi-service access capability, reliable protection and good operation-and-maintenance. Taking construction of the access layer OTN system in a central area of a certain south city for example, the multi-services carried by it were analyzed. At last, the necessity of constructing the access layer OTN system was detailed illustrated by the capacity challenges for the access layer of local transport network, the infrastructural constraints of constructing pipes and optical cables, the advantages and disadvantages of constructing the access layer OTN system. It suggests that building the access layer OTN system is an ideal choice for bearing the multi-services for the local transport network access layer.关键词：access layer,;OTN;necessity392|687|0更新时间：2024-06-05
- 摘要：As the main driving force of LTE is data service, which cannot provide voice service. As for WCDMA operators, the CSFB needs to be deployed, before the VoLTE is prepared. The deployment issues of CSFB and impacts on the network were analyzed in detail. In the end, recommendations of CSFB deployment were given.关键词：LTE voice;circuit swithched fallback;interoperability298|1211|0更新时间：2024-06-05
- 摘要：In response to the new challenges brought by mobile internet, mobile core network needs to introduce enhanced technology. Based on the research on enhanced technology, the core network solution for mobile internet was proposed, called EGGSN. Then the architecture and technical scheme of EGGSN was introduced. Finally, the advantages and disadvantages of EGGSN networking were analyzed.关键词：mobile internet;enhanced technology;EGGSN;APN convergence;intelligent shunt302|831|0更新时间：2024-06-05
- 摘要：The OTN technology has been widely used in metropolitan area network and big bandwidth business, but the operational complexity of OTN has been plagued by maintenance personnel, how to build efficient scheduling and simple operational OTN is a big problem to the industry. Suzhou Telecom tested and explored again and again to find out the new thinking of OTN network operations, through the establishment of OTN operational system and realized the visualization of the resource management and health analysis, carried out the routine maintenance work plan,form the network evaluation and optimization method and so on to realized the real-time monitoring and analysis of OTN, active operations, avoided the happening of the fault in advance, to build a business-centric OTN network reform mode and achieved great results.关键词：OTN;visualization;real-time monitoring;operation343|945|0更新时间：2024-06-05
- 摘要：The TD-LTE network scenario PTN core layer L3 networking architectures and networking ideas were described. Firstly, the TD-LTE radio network requirements were introduced and the existing metro transport network appropriate framework was described. Secondly, the current PTN L3 functions, PTN+CE bearer network architecture, PTN L3 network detailed deployment and designing were analyzed. Finally, PTN metro L3 network evolution was analyzed, a reference to the future development of the network was provided.关键词：metro transport network;PTN;core network design;TD-LTE411|1051|0更新时间：2024-06-05
- 摘要：In order to meet the express deployment of mobile application, the cloud computing platform is used to integrate traditional leased line and platform. Under the design principles of mobile integration, the terminal was installed on client edge to establish express IPSec tunnels for accessing the platform. The virtual cloud computing platform and physical server resources pool was integrated to achieve the mixed cloud model. The mobile application as delivered to CDMA domain with the loading balance device. A multi-service integration of virtualization application as the total solution for the mobile application was provided.关键词：cloud computing;CPE VPN;CDMA VPDN295|597|0更新时间：2024-06-05
- 摘要：As more and more telecom services carrying over the IP network, the IP MAN needs higher reliability requirements. The service access control layer is the key equipment of converging multi-service in IP MAN, and plays a connecting function in the network. Based on the operational practice and operational testing, the current state of technology of the service access control layer equigment business back up was analyzed. The methods and recommendations with building high reliability service access control layer in the new architecture of bearer network were proposed.关键词：IP metropolitan area network;service access and control layer;business backup technology;high reliability305|794|0更新时间：2024-06-05
- 摘要：According to the situation with the exhaustion of IPv4 addresses, Wuxi Telecom has carried on scale deployment of IPv6 transition mechanism（NAT444、DS-Lite）on metropolitan network 100 000 broadband users have been migrated. The background of IPv6 transition mechanism was described, IPv6 transition technology was summarized, and scale deployment scheme and situation of transition technology were introduced.关键词：next generation internet;IPv6 transition mechanism;NAT444;DS-Lite267|1023|0更新时间：2024-06-05
- 摘要：In order to study the feasibility of software defined network（SDN）application in optical transmission network, the concept and background of SDN were presented, the drivers and issues of the application of SDN in optical transport networks were analyzed, and finally several suggestions for the applications of SDN were proposed.关键词：soft defined network;automatically switched optical network;application programming interface;path computation element305|718|0更新时间：2024-06-05
- 摘要：As one of distinctive scenarios, QoS support for key services could make differential protection for self-operated services of China Telecom and other CP／SP services. It could control and schedule users, services and network traffic combined with PCC technology. Key technical and deploy solutions of QoS support for services were analyzed and deeply researched, the reasonable solution uesed for China Telecom CDMA network was given.关键词：CDMA mobile network;smart pipe;QoS support;policy and charging control279|610|0更新时间：2024-06-05
- 摘要：In the mobile internet era, along with the rapid development of smart phones and the variation of user requirements, telecommunication operators meets more and more new challenges, for instance, network congestion happens more frequently, network resources are unfairly distributed, and revenue does not grow in step with network flows. Based on the PCC architecture, a scheme of top-level design and deployment practice for mobile internet smart pipe was proposed. Moreover the deployment practice has achieved good results, which would build solid foundation for the implementation of traffic flow based market operation.关键词：mobile internet;top-level design;deployment practice;PCC architecture259|608|0更新时间：2024-06-05
- 摘要：In the construction process of service platforms, carriers generally face issues of low hardware resource utilization, high operation and maintenance costs, high energy consumption, long construction period and so on. As cloud computing matures, using virtualization technology to build a cloud computing resource pool, carrying on the carrier's service platforms has become an important way for platform integration. Cloud computing technology service model were outlined, on basis of which platform resource pool's position was cleared. Then according to characters of the service network, an implementation strategy of platform integration based on cloud computing platform was proposed. Then from a real case, a construction program for cloud computing resource pool including hardware devices configuration and virtualization software selection was provided.关键词：cloud computing;virtualization;service platform;private cloud;IaaS265|1622|0更新时间：2024-06-05
- 摘要：Due to discontinuous transmission characteristics, uplink DTX could bring benefits such as terminal power-saving and interference reducing to TD-SCDMA system. During the existing standard, the default state of uplink DTX is on, without corresponding off mechanism, which may deteriorate the performance and reliability of communication system. In order to solve the uncontrollable problem of uplink DTX state, fill the blank of existing standards, and meet the operation demands of communication system, three kinds of on-off methods were introduced, and their implementation effects were discussed from six dimensions.关键词：discontinuous transmission;special burst;TD-SCDMA333|558|0更新时间：2024-06-05
- 摘要：In recent years, as the rapid-growth of the 3rd generation terminals, applications and services, the network load increase especially when small-flow online applications are much more popular. The RSSI problem became one of the critical bottlenecks to enhance the using experience. With the deep analysis of RSSI mechanism of cdma2000 1x Ev-Do network, the different effects on network reverse noise and user's experience of different combinations of parameters were discussed, a new parameter template was created based on the optimal control of AT transmit power. The template has applied in Jiangsu province and significantly improved the network capacity and user's experience without increasing the cost.关键词：received signal strength indication;power control;channel gain;RoT;user experience224|364|0更新时间：2024-06-05
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