Telecommunications Science

Standardization of 3G Home NodeB in 3GPP

Xiayan Xu

2009, 25(4): 1-5. doi:10.3969/j.issn.1000-0801.2009.04.001

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Introduces the process of 3G home NodeB standardization in 3GPP on service requirement，network architecture，RF， OAM and security，and introduces some technical aspects under study.

Research on Home Base Station Security Mechanism

Zhibin Zheng,Hao Wu,Jing Chen

2009, 25(4): 6-10. doi:10.3969/j.issn.1000-0801.2009.04.002

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With widely application of wireless broadband，home base station，as a mini-size base station deployed in user’s home， is used to solve the access problem of wireless data in the last 10 m.Since the deploy environment of home base station is much different from that of macro-base station，home base station requires complex security mechanism to ensure the security.Based on this，this article introduces and analyzes the security key technologies of home base station.

Study on the Strategy and Technology of Home NodeB Location Restriction

Lingfeng Zhang,Xin Jiang,Heling Rui

2009, 25(4): 11-15. doi:10.3969/j.issn.1000-0801.2009.04.003

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Home NodeB，also known as Femtocell，is an indoor telecommunication equipment which integrates the main functions of the traditional UTRAN equipment.In this article，firstly，discuss the development and trend of the Femtocell；secondly，analysis the necessity and feasibility for the location restriction of Femtocell；thirdly，introduce the typical location restriction method which is based on the interception of macro NodeB；lastly，from the view of network address binding，introduce two new methods for the location distriction of Femtocell.

Analysis of Home NodeB’s Authentication

Xiaoming Wang,Yanyan Du,Xin Jiang

2009, 25(4): 16-19. doi:10.3969/j.issn.1000-0801.2009.04.004

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As a new type of base station，Femto home NodeB（HNB）is both a family equipment and a network equipment.This article gives solutions of Femto user authentication，Femto HNB equipment authentication and mobile UE authentication.

Research on QoS Management of Differentiating Femto AP

Wencan Shi,Qi Ouyang

2009, 25(4): 20-24. doi:10.3969/j.issn.1000-0801.2009.04.005

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In this paper，a new QoS management method for differentiating Femto AP is proposed.According to the new method， Femto gateway is used as a center point of the wireless QoS management，the current session is associated with the served Femto AP in real-time.The method help operator to control the Femto system more effectively and constitute the market policy more flexibly.

Study on Synchronization Solution for TD-SCDMA Home NodeB

Xin Jiang,Heling Rui,Yanyan Du

2009, 25(4): 25-28. doi:10.3969/j.issn.1000-0801.2009.04.006

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This article first introduced the home NodeB’s background and the overview of system solution，and then analysed clock synchronization solutions in TD-SCDMA home NodeB’s deployment，gave the mainstream solutions with analysis of strengths and weaknesses，and finally put forward different proposals of the actual deployment.

Research on Convergent Service of FemtoCell

Fangyan Shi,Yanrong Diao,Xu Liu

2009, 25(4): 29-32. doi:10.3969/j.issn.1000-0801.2009.04.007

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FemtoCell can not only resolve the wireless coverage of blind spots but also be used to provide convergent services.This paper describes the AP convergent solution based on the FemtoCell and DSL/Wi-Fi/IPTV，programs of bundled fees， composite business service，enterprise application，and so on.

Analysis of FemtoCell Network Test Based on cdma2000 System

Siwei Wang,Yuan Liu,Bin Dong,Feng Zhou

2009, 25(4): 32-38. doi:10.3969/j.issn.1000-0801.2009.04.008

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With the rapid growth of mobile communications business，quality of network and coverage of blind spots have become the key factors in holding users.As a rapid supplementary means of coverage，FemtoCell has good application prospects in solving the coverage of blind spots in family，enterprise and developing convergent services.This paper describes the network of FemtoCell based on cdma2000，the testing process and test results.Then it analyses some key technical problems such as synchronization，handoff，interference，QoS and gives out the advice of solutions.The technical feasibility of FemtoCell is verified through the actual network tests.

Research on Topologic Architecture of Three-Dimensional Network on Chip

Yiou Chen,Jianhao Hu,Xiang Ling

2009, 25(4): 39-44. doi:10.3969/j.issn.1000-0801.2009.04.009

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The three-dimensional network on chip is a new technology in VLSI，in order to solve the communication challenges of system on chip caused by high integration.The state of the art topologies and relative techniques for 3D NoC are introduced in this area，three novel 3D topologies based on De Bruijn graph are proposed，and the performance parameters of these topologies are compared.

A Novel Trustworthy Routing Architecture Based on Intelligent Traffic Classification

Jun Li,Shunyi Zhang,Cuilian Li,Ye Xuan

2009, 25(4): 45-51. doi:10.3969/j.issn.1000-0801.2009.04.010

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Trustworthy networks will be an important trend of the research on network security and quality of service（QoS） provisioning.In this paper，we firstly present QoS routing model based on traffic classification to support the deployment of trustworthy networks.It consists of the components such as dynamic configuration of security/QoS policies，accurate traffic classification in real-time，packet marking，automatic traffic regulation and control，queue scheduling mechanism，and QoS routing.Thereof，elaborate scheme of intelligent traffic classification is investigated and proposed to facilitate the model.The traffic classification system is characterized as high accuracy，low computational complexity，scalability，early detection，and robustness by leveraging the advantages of various classification approaches.It is，therefore，expected to be used in the context of real-time traffic classification.

Research on IMS Network QoS Based on MPLS Bearer Architecture

Gang Zhao,Xiangqi Zhang,Le Zhang

2009, 25(4): 52-56. doi:10.3969/j.issn.1000-0801.2009.04.011

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In this paper，the IMS network QoS control policy proposed in 3GPP R7 is reviewed.Based on that，practical solutions are given to ensure an end-to-end QoS，applied in both IMS core and bearer networks.

Design and Simulation of a Multicast Communications Model for NoC

Yiming Ouyang,Bing Zhu,Huaguo Liang,Wei Wang

2009, 25(4): 56-61. doi:10.3969/j.issn.1000-0801.2009.04.012

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A model of multicast communications is proposed for NoC（networks on chip）to provide communications to guarantee deadlock-free routing.Multicast model has the capability of reducing traffic remarkably，increasing utilization ratio of channels and decreasing testing time in test mode.Modeling of the multicast communications were simulated and applied on 2D Torus NoC.Experimental results demonstrate that our communications model has lower average communication latency and higher throughput than unicast communications.

Design of the Firmware for Stackable VoIP Card

Fenghua Li,Ce Zhang,Zhongmin Wang,Yi Li

2009, 25(4): 62-67. doi:10.3969/j.issn.1000-0801.2009.04.013

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The architecture of a stackable VoIP telecommunication application system is proposed；and the firmware implementation of the VoIP card based on the IP stackable-oriented attribute is described emphatically.A VoIP card can support 8 voice channels，and the cards can be independently connected with each other through IP by the self-defined communication protocol，the stackable attribute based on IP is realized.This protocol is used to implement the communications among the channels within the voice-chip，among voice-chips within the card，among different VoIP cards，between the VoIP cards and the management PC.To improve the real-time capability，the control software of the VoIP card is running under the kernel module model，and the call-back function is triggered by the interruption service routines of VINETIC-2CPE voice-chip under the kernel module model.

A Scheduling Algorithm for WiMAX Mesh Network with Multiple Egress

Zhaowen Huang,Suili Feng,Wu Ye,Hongcheng Zhuang

2009, 25(4): 68-73. doi:10.3969/j.issn.1000-0801.2009.04.014

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When we use the wireless mesh network in backhaul network，we need to consider the scheduling efficiency，throughput and robust.Since the WiMAX mesh network can guarantee the QoS of the mesh network，it is possible to be deployed in the backhaul network.In this paper，we analyze the scheduling mechanism of the WiMAX mesh network and point out the shortcoming of the single BS.Then we proposed a new WiMAX mesh network topology with multiple BS as egress，and we also gave the global optimized scheduling algorithm for our network plan.We described the detailed procedure used in our algorithm.We developed a simulation platform to verify this algorithm in a WiMAX mesh network with 20 and 50 mesh SS nodes.The simulation result shows that our algorithm will improve the efficiency varying from 53 percent to 70 percent.

A New Method to Distinguish Interior/Exterior Users in LTE

Jiangang Qi,Zhongnian Li,Yafeng Wang

2009, 25(4): 74-77. doi:10.3969/j.issn.1000-0801.2009.04.015

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In the study of ICIC（inter-cell interference coordination）of LTE，the basic foundation is to distinguish interior users from exterior users.The existing method，RSRP single-threshold reporting mechanism，will cause UE position information to be switched between“interior UE”and“cell edge UE”.This Ping-pong effect can cause a lot of unnecessary signaling and load a heavy burden on UE battery consumption.Based on this，a new method is proposed，which is RSRP double-thresholds reporting mechanism.The new method can solve the problems above，so as to provide a more efficient way to judge the UE position.

Scheme of Enhancing the Security of VPN

Jinglian Huang,Xiujuan Yuan

2009, 25(4): 78-81. doi:10.3969/j.issn.1000-0801.2009.04.016

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For MPLS VPN not suitable for the complex network application with high security requirements because of its lack of providing encryption and certification，only achieving point to point security while being incapable of fine-grained security services，a scheme of enhancing the security of VPN is proposed to ensure the integrity and confidentiality of data.It realizes fine-grained security service strategy based on the security domain and role by integrating VPN and IPSec and using cryptographies such as encrypted authentication，etc.

Discussion to the Interzone Between Upper Limit and Lower Limit of Telecommunication Price Regulation

Shan Liu,Shuyi Dong

2009, 25(4): 82-86. doi:10.3969/j.issn.1000-0801.2009.04.017

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This paper raise the concept and some regulation methods of telecommunication price interzone，based on the research literature of telecommunication upper limit and lower limite price regulation，in order to transfer the monotone price competition mode to manifold competition mode，transfer the incomplete information game to complete information game，and hope those methods do favor to the future more effective telecommunication competition regulation.

Research on Low-Cost Multi-Service Integrated Access EPON System Design

Jianxue Wu

2009, 25(4): 87-89. doi:10.3969/j.issn.1000-0801.2009.04.018

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EPON is a good solution for FTTH.However，when a variety of services are transmitted on EPON，there still exsits a lot of challenges，such as QoS，DBA，high-bandwidth，safty，cost and so on.The industry-leading EPON chipset provider， Teknovus，provided a set of good EPON SoC solution，which can meet the low-cost multi-service integrated access EPON system design.It is bound to further promote the EPON technology.

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