最新刊期
卷 30 ， 期 12 ， 2014
- 摘要：With the development of mobile applications, the massive background data transfers may seriously burden the user equipment and reduce the lifetime of battery. In order to reduce the energy consumption of this background traffic, a new energy-efficient approach based on traffic shaping, that uses some static network parameters such as inactivity timer, buffer threshold, was proposed. The simulation results show that the approach can save 32％to 63％Cof the total energy consumption.关键词：translation energy;3G;traffic shaping;energy-efficient approach658|1455|0更新时间：2024-06-05
- 摘要：The development of wireless communication networks is now facing severe challenges from limited spectrum resources and stringent energy consumption constraints, which calls for system level theories and methods to efficiently utilizethe spectrum and energy. A novel hyper-cellular mobile communication architecture was proposed, which decoupled the control signaling coverage and traffic service coverage, so that network resources can be smoothly matched with traffic variations. Via the decoupled architecture, spectrum efficiency and energy efficiency can be jointly optimized, meeting the twofold requirements of high capacity and low power consumption for future mobile communications. The network energy efficiency theory, energy efficient transmission and network collaboration technologies, spatial-temporal traffic modeling and green wireless services were introduced, and the demo system of the hyper-cellular architecture was proposed.关键词：hyper-cellular;control and traffic decoupled architecture;network energy efficiency;energy-delay tradeoff;spatial-temporal traffic modeling;differential service817|1700|0更新时间：2024-06-05
- 摘要：A novel distributed Hash table（DHT）algorithm under named data networking（NDN）, which was called ndnDHT, was proposed. The algorithm brings the DHT to NDN for the first time. A new binary method using the structure of NDN was designed. By mapping the key space to the space of NDN, the binary method solves the operations such as routing and retransmission. Besides, a dynamic selection method of node identifier distribution was proposed to balance the load of ndnDHT algorithm. Finally, ndnDHT algorithm based on NS-3 and ndnSIM was implemented. The experimental result shows that the ndnDHT algorithm is effective.关键词：named data networking;distributed Hash table;ndnDHT711|829|0更新时间：2024-06-05
- 摘要：There are real-time transmission problem of multimedia data and network lifetime optimization problem in wireless multimedia sensor networks. In order to solve the problems, multi-path routing algorithm based on minimum cost maximum flow（MRAMCMF）was proposed. MRAMCMF analyzed energy consumption of data transmission, node remaining energy and minimum data transmission delay, proposed a new weighting function, and used the minimum cost maximum flow algorithm to construct the multi-path routing scheme. All multimedia sensor nodes transmited data to sink node along the paths. Simulation results show that MRAMCMF can prolong network lifetime, reduce and balance node energy consumption, and reduce data transmission delay. Under certain conditions, MRAMCMF outperforms Ratio_w and TPGF.关键词：wireless multimedia sensor network;network lifetime;minimum cost maximum flow;data transmission delay444|651|0更新时间：2024-06-05
- 摘要：Network virtualization is the main means of solving the ossification problem, and resource allocation is the core of network virtualization. Unbalanced resource distribution and low virtual network acceptance ratio have been caused by diversifying services whose requests of virtual nodes and virtual links have great disparity. In order to solve these problems, virtual network embedding algorithm for diverse service requests was proposed. First, it defined node saturation which reflects resource ration between node and its connected links. Then, it mapped virtual nodes to substrate nodes whose minimum node saturation was closest to the one of virtual nodes. At last, it mapped virtual links to substrate paths which were composed of substrate links based on the constraints of mapped substrate nodes and node saturation. Simulation result shows that the proposed algorithm can satisfy diverse service requests and get higher virtual network acceptance ratio and resource utilization ratio.关键词：virtual network embedding;diverse service requests;node saturation286|733|0更新时间：2024-06-05
- 摘要：Power control is one of the key technologies of cognitive radio technology. Distributed power control problem can be converted into non-cooperative game to solve the problem. Combining with the characteristics of cognitive radio, a new type S utility function was put forwarded, the normalized form was applied, and the existence and uniqueness of the Nash equilibrium were proved. Simulation results show that the algorithm is not restricted by system modulation mode, and reduces the computational complexity, and has faster convergence speed. The fairness between the users was taken into account, to a certain extent, and the users can share channel resources fairly.关键词：cognitive radio;power control;non-cooperative game;utility function261|739|0更新时间：2024-06-05
- 摘要：Internet traffic characteristics computation is an important step of internet traffic analysis, in the face of massive internet traffic data, parallel computing internet traffic characteristics is base to prompt the performance of internet traffic analysis. In order to solve the problems of poor expansibility and high cost that caused by the traditional stand-alone, an internet traffic characteristics analysis method based on MapReduce, which parallel processes diffluent internet traffic and characteristics computing, was proposed. By using the Hadoop platform, the actual data was analyzed and the common internet traffic characteristics were computed. Experiments show that the method is reliable to analyze the characteristic of the internet traffic and it is suitable for analyzing large traffic data.关键词：MapReduce;diffluent internet traffic;characteristic;parallel computing346|849|0更新时间：2024-06-05
- 摘要：The Android mobile terminals monitoring system based on SMS was proposed and the function of getting information from the mobile phone with the monitoring system installed （remote Android mobile terminal）was implemented through the prearranged monitoring of it by short messages. The system was installed on a mobile phone and the monitoring numbers and the codes were registered. When the short message commands were sent by the monitoring mobile phone to the mobile phone with the monitoring system installed, short messages were captured. The incoming number and content were separated and compared respectively with the registered records in the SQLite database by the SMS monitoring module of this system. If the match is successful, a message was replied, according to which information codes needed to acquire were sent back by the monitoring mobile phone. MMS, location, missed calls, unchecked messages, contacts and so on were sent back according to the codes by the mobile phone with the monitoring system installed. The effectiveness of this system has been verified through testing.关键词：Android;short messages;match;remote control408|967|0更新时间：2024-06-05
- 摘要：The information resources organization and management model were discussed. Firstly, based on the principles of information service, a network and big data service integration model was built. Secondly, the information integration, sharing and access mechanism were introduced respectively. Finally, agriculture information sharing service and platform implementation were given, which provided the theoretical and application demonstration for intelligence agriculture factory information construction and realization.关键词：big data;resource integration;information share service;agriculture factory324|2582|0更新时间：2024-06-05
research and development
- 摘要：The operators are becoming enthusiastic about LTE MBMS services with more and more LTE network are built. LTE broadcast services are best fit for the need of multimedia services, especially the mobile video services with the benefit of the broadcast technology developed by 3GPP. The LTE MBMS service mode was introduced firstly, then overall system architecture, functional components and protocols were described, the key issues for eMBMS deployment were analyzed and discussed, the conclusion was provided briefly.关键词：LTE;multimedia broadcast multicast service;broadcast;multicast763|1698|0更新时间：2024-06-05
- 摘要：The LTE service eMBMS was focused on, including the architecture and advantages. Furthermore, the wireless technologies and radio resource schedule were discussed and analyzed.关键词：LTE;EMBMS;radio resource schedule656|1906|0更新时间：2024-06-05
- 摘要：On the basis of studying basic concept and standardization of BM-SC（broadcast multicast service center）, the management procedure and main service scenes of eMBMS were analyzed, then a novel architecture for eMBMS BM-SC was presented, which was under consideration of the needs of operators and in accordance with 3GPP definition. The key technologies and proposes implementation schemes of BM-SC were studied.关键词：EMBMS;broadcast multicast service center;long term evolution773|1672|0更新时间：2024-06-05
- 摘要：eMBMS business concept was first introduced to analyze the specific business application scenarios of live services and push services, followed by analysis of the whole industrial ecosystem, charging model, content aggregation methods, business management requirements, and business promotion strategy. It was proposed that the platform model was the best business model in the primary stage. In addition, combined with the advantages of the content model, developing telecom operators' unified client was proposed in order to strengthen telecom operators' brand marketing.关键词：eMBMS business application;business model;video service729|1657|0更新时间：2024-06-05
- 摘要：Through the research of 3GPP's eMBMS security mechanism and being combined with the characteristics of operators, the influence of current network by the deployment of eMBMS security mechanism was given. On the basis of the research above, a proposal was made for how the operator deploys eMBMS security mechanism.关键词：LTE;security mechanism;content protection597|1325|0更新时间：2024-06-05
Special topics:LTE eMBMS technology and business
- 摘要：With the increase of network services, multi-dimensional packet classification technology has become a core technology for network devices in the next generation internet. Firstly, the theoretical foundation of packet classification algorithm was introduced. Secondly, the typical packet classification algorithms were introduced and analyzed, and the improvement measures were proposed. Finally, the multi-dimensional packet classification algorithm was proposed and the future work was discussed.关键词：multi-dimensional packet;5-tuple;payload330|647|0更新时间：2024-06-05
Overview
- 摘要：With the exhaust of IPv4 address, internet is transferring to IPv6. Firstly, security problems of home gateway in the dual stack accessing scene were analyzed, including IPoE service channel protection, dual stack address pool tracing, and manage port address protection. Secondly, three methods were given to solve the security problems. At last, a realization and experiment result was given.关键词：home gateway;dual stack accessing;address tracing;interface ID;address hopping342|1008|0更新时间：2024-06-05
- 摘要：Some key issues of the application channel were analyzed in the case of IPv6 transitory techniques implementation. Then several networking plans were studied and tested based on different service models. Finally, relative solutions to the issues and implementation policies were provided.关键词：application channel;transitory technique;address family transition router;broadband remote access server;deep packet inspection;dual stack lite;session310|593|0更新时间：2024-06-05
- 摘要：In the 4G network, because the flat network structure, wireless access side cannot independently to realize the analysis of user tracking and optimization. In order to solve the above problem, based on 3GPP protocol, the construction of EPC and LTE wireless cooperative tracking processing mechanism was proposed, the optimization scheme was put forward to solve the application problem of different manufacturers scene, and to meet the current network user tracking and optimization analysis of demand, a platform for further user based localization problem and the key security was provided.关键词：evolved packet core;radio access;user tracing;end-to-end;northbound interface334|1127|0更新时间：2024-06-05
- 摘要：Signaling storm has degraded the service experience of the mobile subscriber. The main reasons that leading to mobile network signaling storm were presented, and some suggestions were also given for the solution from the perspective of both terminal and network. On one hand, the signaling in the air interface can be reduced by the way of heartbeat alignment in the terminal, on the other hand, paging mechanism optimization and paging area optimization can also reduce the effect of the signaling storm. The study item of 3GPP about small data packet transmission optimization was also introduced.关键词：signaling storm;heartbeat alignment;procedure optimization;CDMA;LTE820|1475|0更新时间：2024-06-05
- 摘要：Based on the service secure operating requirements for telecom carrier's mobile application store, the main problem of batch testing for the security of mobile application was analyzed and the architecture of batch testing was proposed. Then, the key issue about the architecture was discussed. Furthermore, some advices for the constructing of batch testing's service platform were given.关键词：security of mobile application;batch testing;secure model255|770|0更新时间：2024-06-05
- 摘要：Currently, security has been regarded as one of the greatest problems in the development of mobile Internet, the end-to-end security of mobile internet involves three dimensions: cloud security, pipe security, terminal security. The mobile intelligent terminal security, Android and iOS mobile intelligent terminal were as the representative, the security situation on mobile intelligent terminal and their solutions were discussed from the system, application, vulnerabilities and malicious code multi-angle.关键词：mobile intelligent terminal;system security;application security314|1488|0更新时间：2024-06-05
- 摘要：When the WLAN network faults, maintenance personnel need to quickly locate and solve the fault,to serve the operator's network operation better. Therefore, a topology management system for WLAN fault location network management system was proposed. The management system has been put into operation and has achieved the expected effect,provides a powerful support to WLAN network fault management of operators.关键词：WLAN;topology;network management;fault location;access point;access controller280|812|0更新时间：2024-06-05
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