Analyzing the Economic Effect of Mobile Network Sharing in Korea

As mobile markets in most developed countries are rapidly coming close to saturation, it is increasingly challenging to cover the cost of providing the network, as revenues are not growing. This has driven mobile operators, thus far mostly involved in facility‐based competition, to turn their attention to network sharing. There exist various types of mobile network sharing (MNS), from passive to active sharing. In this paper, we propose a model, based on the supply‐demand model, for evaluating the economic effects of using six types of MNS. Our study measures the economic effects of employing these six types of MNS, using actual WiBro‐related data. Considering lower service price and expenditure reduction, the total economic effect from a year's worth of MNS use is estimated to be between 513 million and 689 million USD, which is equal to three to four percent of the annual revenue of Korean mobile operators. The results of this study will be used to support the establishment of a MNS policy in Korea. In addition, the results can be used as a basic model for developing various network sharing models.     

Multi‐criteria Evaluation of Mobile Network Sharing Policies in Korea

Mobile operators in saturated markets increasingly favor mobile network sharing (MNS) over facility‐based competition. Previous research examining MNS primarily focused on its positive effects, while the negative effects were largely overlooked. This study proposes a decision‐making model using an analytic hierarchy process technique to evaluate decision‐making criteria among various types of MNS policies. The decision‐making model was applied to Wireless Broadband services in Korea to determine the relative importance of both positive and negative evaluation criteria and preference among multiple types of MNS policies. Positive evaluation criteria (that is, efficiency) were far greater in importance than negative evaluation criteria (that is, competition harm). The preference for adopting MNS among five alternative approaches was also revealed. The study findings offer immediate policy insights in Korea and provide a decision‐making framework for policy makers in other countries to utilize.     

多方数据共享环境下匿名化数据的安全性量化方法(英文)

This paper aims to find a practical way of quantitatively representing the privacy of network data. A method of quantifying the privacy of network data anonymization based on similarity distance and entropy in the scenario involving multiparty network data sharing with Trusted Third Party (TTP) is proposed. Simulations are then conducted using network data from different sources, and show that the measurement indicators defined in this paper can adequately quantify the privacy of the network. In particular, it can indicate the effect of the auxiliary information of the adversary on privacy.     

移动网络网元分布式部署研究

移动数据业务快速发展,移动宽带网络的投入成本和收入问题,对网络扁平化趋势下网元分布式部署提出了一定要求。本文在研究移动网络分布式部署驱动力的基础上,分析了各种移动网络分布式部署模型关联成本因素的影响,提出了部署策略。     

移动智能数据业务网络功能模型的研究与设计

数据业务是目前移动通信发展最迅速的业务之一,与智能网(IN)的融合将会进一步扩大其应用范围,并且可以集中数据业务与智能业务两者的优势,无疑会有广阔的应用前景。这方面已经有了一些尝试,但是两种体系的互通还不完善。本文分析和改进了移动数据业务网络的体系结构,设计了基于北京邮电大学CMIN02系统的数据业务与智能业务互通的功能模型,并对此进行了深入研究与探讨。     

移动网络网元分布式部署研究

在研究移动网络分布式部署驱动力的基础上,分析了各种与移动网络分布式部署模型相关联的成本因素的影响,并提出了部署策略。     

Optimization of Handover Parameters for Traffic Sharing in GERAN

Cellular network traffic is unevenly distributed both in time and space, which greatly complicates network dimensioning. As a result, some cells in the network are permanently congested, while others are underutilized. In a previous paper, the authors showed that this problem can be effectively solved in GSM/EDGE Radio Access Networks (GERAN) by modifying handover boundaries. However, several drawbacks prevent operators from fully exploiting the potential of this technique. This paper investigates the limitations of current traffic-sharing approaches with tight frequency reuses in GERAN. To deal with such limitations, an algorithm is proposed to jointly optimize handover margins and signal-level constraints based on network statistics for traffic sharing in GERAN. A complementary algorithm is proposed to adjust cell (re)selection offsets to minimize the number of handovers. Simulation results show that the proposed method achieves a significant reduction in call blocking without excessive call quality impairment or increase of network signaling load when compared to the current approaches. More traffic can thus be handled without the need for any hardware upgrades, providing a cost-effective means to increase network capacity.

基于移动网数据的城市交通分析研究

传统的智慧交通数据采集方式,包括交通调查、定点监测、摄像机摄像等,技术成熟且精度较高,然而其缺点也非常明显,采集范围小、成本高、施工周期长。而电信行业的大数据具有实时性强、数据量大、覆盖人群广、成本低廉、信息丰富等特点,可为城际交通和市内交通提供丰富的数据支持。基于移动网用户侧计费账单、计费详单以及XDR数据,给出了典型交通应用场景下的分析方法及应用案例。     

下一代移动通信探讨

文章回顾了前3代移动通信的发展历程,列举了前3代移动通信遗留的问题。对下一代移动通信体制选择、物理层关键技术、网络全IP化与智能化、拓扑结构与网络整体规划等进行了综合分析。     

Flexible Network Support for Mobile Hosts

Fueled by the large number of powerful light-weight portable computers, the expanding availability of wireless networks, and the popularity of the Internet, there is an increasing demand to connect portable computers to the Internet at any time and in any place. However, the dynamic nature of a mobile host's connectivity and its use of multiple network interfaces require more flexible network support than has typically been available for stationary workstations.This paper introduces two flow-oriented mechanisms, in the context of Mobile IP , to ensure a mobile host's robust and efficient communication with other hosts in a changing environment. One mechanism supports multiple packet delivery methods (such as regular IP or Mobile IP) and adaptively selects the most appropriate one to use according to the characteristics of each traffic flow. The other mechanism enables a mobile host to make use of multiple network interfaces simultaneously and to control the selection of the most desirable network interfaces for both outgoing and incoming packets for different traffic flows. We demonstrate the usefulness of these two network layer mechanisms and describe their implementation and performance.     

手机电视的实现技术研究

本文介绍了“手机电视”业务的两种主要技术实现方式，包括基于移动通信网络的方式和基于数字电视地面广播的方式。然后对这两种实现方式的特点进行了分析和对比，最后提出了在应用层面进行融合的方式。     

无线Mesh网络中网络编码的文件共享模型

网络编码的基本思想是网络节点不仅参与数据转发,还参与数据处理,可大幅提高网络性能。传统文件传输系统存在文件分发时间的"瓶颈"问题,为此,提出一种在无线Mesh网络中网络编码的简化文件共享模型,采用理论分析和实验仿真的方法,研究节点间的4种合作机制。结果表明,在总分发时间上,基于网络编码转发机制比无网络编码的转发机制平均减少11.67%,显著地降低了文件传输系统的分发时间,从而提高了网络的吞吐量。     

全球移动虚拟运营商分析

移动虚拟运营商(MVNO)是新出现的通过其他运营商的移动网络为用户提供移动业务的电信业务运营商。根据MVNO对网络运营商(MNO)的依赖程度不同,MVNO可分为三种。目前英国Virgin公司与英国的移动蜂窝通信运营商One2One的合作非常成功。但总体看来,MVNO目前对市场的影响还不是很大。固定网业务运营商、移动业务独立转售商、品牌知名度高的公司以及众多的内容服务提供商都有可能成为MVNO。     

移动门户现状浅析

目前，移动门户领域竞争激烈，主要有四类竞争者：移动运营商、ISP、新加入者和软硬件提供商，其中处于优势的移动门户大部分由移动运营商建立。相比于欧洲门户的紧缩，日本i-mode因其技术优势、低成本和有效的提供商与运营商间的分配机制而大获成功。欧洲移动运营商由此进行了一系列改进。在移动门户提供的服务特点上，第三方提供服务在亚洲很流行，在欧洲和北美也逐渐成为主流。     

研究热点：融合：移动互联网的关键技术研究

随着电信网和互联网的融合,移动互联网必将兴起。移动互联网不仅给用户带来高质量的业务体验,也给电信也带来巨大的挑战。本文首先讨论了移动互联网的现状、层次结构和发展动因;接着系统地阐述了移动互联网的移动IP技术和相关协议,包括移动终端、移动子网的移动性支持;然后,阐述了3GPP提出的IP多媒体子系统（IMS）及其分层网络结构,面向下一代移动互联网,讨论构建具有服务质量保证的可靠可信IP网络架构;最后指出了移动互联网中的热点技术和问题。     

移动网络发展趋势分析

移动网络已经进入到4G规模商用的阶段,未来移动网络将向支持更高的数据流量、海量的设备连接、更低的时延性能以及更智能化管理控制的方向发展。本文概述了目前移动网络的发展现状和主要问题,并对未来移动网络发展趋势进行了分析。     

移动通信网络中的位置管理优化技术研究

对移动通信网络中的位置管理技术进行了研究,基于现网的网络特点和用户行为而引发的核心网优化问题,选取大本地网内小本地网间位置更新失败而引发用户被叫异常和复制卡用户双活两个典型案例进行深入分析,提出解决思路。     

3G WCDMA网络共享的关键技术

基于3GPP标准中网络共享的最新研究进展,文章介绍了3G WCDMA网络共享的4种解决方案:站点共享、公共共享网络、地理分割网络共享、无线接入网共享,对Release5中的lu-Flex功能、Release5中连接模式下的UTRAN共享机制和Release6中的网络共享支持增强机制等网络共享的关键技术进行了分析.     

OTT业务特性及其对移动网络影响的研究

分析了OTT业务的渗透率、“心跳”信息发送和数据传输等方面的特征,以及这些特征对移动通信网带来的影响,并提出了相关应对策略。     

浅谈中国移动IP城域网的建设及发展

论文结合中国移动IP网络的特点,提出了中国移动的IP城域网建设及发展建议,主要内容包括:建设移动IP城域网的意义、移动IP城域网的战略定位、移动IP城域网的建设方案、移动IP城域网的业务发展建议。