中国移动多媒体广播技术专利申请状况分析

随着智能手机和多媒体网络的迅速发展,手机电视业务得到广泛的应用.中国移动多媒体广播技术是一种实现手机电视业务的重要标准.基于对国内的中国移动多媒体广播技术的专利申请数据解读,分析了中国移动多媒体广播技术的发展现状和专利申请态势,从而为我国企业选择合理的研究领域、制定发展策略提供参考.     

Word of Mouth impact on the adoption of mobile banking in Iran

Purpose

The purpose of this paper is to explore word of mouth impact on the adoption of mobile banking in Iran. This study provides insights into factors affecting the adoption of mobile banking in Iran.

Effect of a policy intervention on handset subsidies on the intention to change handsets and households’ expenses in mobile telecommunications

This study examined effect of a policy intervention that provides an upper limit for handset subsidies on users’ intention to change handset and households’ expenses on mobile telecommunications. The Korean government has prohibited mobile network providers from providing excessive subsidies for mobile handsets to attract subscribers since Nov. 2014 according to the mobile act. Using the exogenous variation, we estimate the impact of the policy on the intention to change handsets and expenses on handset installment, total mobile communications, and online content. The longitudinal data are from the 2014 to 2015 waves of the Korea Media Panel Survey. The mobile act lowered the predicted probability of switching handsets by 0.4% points. Moreover, the mobile act increased the predicted probability of any expense on handset installment by 7.5% points and had a significant impact on the amount of expenses on handset installment, with an increase of 7.8%. The mobile act lowered users’ willingness to switch handsets and increased spending on handset installment. This increased burden in handset installment might shrink the online content market, which has a large need for government support, as well as decrease consumers’ welfare. We assert that the policy intervention on handset subsidies is questionable with regard to both consumer welfare and the healthiness of the ICT ecosystem.     

蓬勃发展的亚太移动通信市场

在渡过了几年前的一场金融危机之后,亚太各国、各地区的移动通信市场再次呈现蓬勃发展的局面。就象其他通信领域一样,亚太的移动通信市场也是一个多样化、发展不平衡的市场,先进与落后并存,竞争相当激烈。但是,亚太移动通信市场的发展速度却总比人们预料的要快。     

移动互联网时代的终端产业发展趋势

随着全球进入移动互联网时代,移动终端产业正面临深刻变革。介绍了国际智能终端产业的现状,分析了我国终端产业面临的机遇、挑战,以及面向移动互联网的终端产业的发展趋势。     

固移无线网络融合实现技术浅析

FMC是当前运营商应对市场竞争的有效手段,是电信网络未来的发展方向,也是备受业界关注的热点话题。本文介绍了业内普遍认可的两种FMC实现方式UMA(Unlicensed Mobile Access,非授权移动接入)和IMS(IP Multimedia Subsystem,IP多媒体子系统),特别提到了SIP(Session Initiation Protocol,初始会话协议)信令协议,对每种实现方式架构、原理、优缺点进行探讨,并总结了FMC实现方式未来的技术发展趋势。     

Transmission in mobile cloudlet systems with intermittent connectivity in emergency areas

The recent development of Mobile Cloud Computing has helped in solving numerous real-life problems. The rate of growth of mobile devices has been increasing at a very high pace. Mobile devices have made substantial contributions in managing emergency situations. Owing to the mobility of mobile devices, cloudlets, and their intermittent connectivity, it may become very difficult to handle emergency situations. To address this problem, a transmission model is proposed for mobile cloudlet systems, where a mobile device is used to designate a cloudlet by using the Borda scores Method and the mobile device can offload a part of its application to this cloudlet. The simulation results demonstrated that the proposed work makes a significant comtribution toward alleviating the problems associated with emergency situations.     

移动通信中基于智能天线的抗多径干扰技术

本文首先概述了多径信道传输特性,在此基础上,重点讨论了基于智能天线抗多径干扰技术的理论,并对基于ＣＭＡ算法的智能天线抑制多径干扰进行了计算机仿真。     

移动通信与IP的融合

Ｉｎｔｅｒｎｅｔ产业的热点之一是ＩＰ电话。与传统电话相比,ＩＰ电话具有诸多优点,其中最吸引用户的是资费。我国电话业务因资费过高而导致网络利用率低,移动袖应抓住ＩＰ电话建设的契机,将ＩＰ引入到移动网中,既可节省长途中继,又可以降低花费以吸引用户。     

GCRP: Grid-cycle routing protocol for wireless sensor network with mobile sink

Energy conservation is a critical issue in resource constraint wireless sensor networks. Employing mobile sink to deliver the sensed data becomes pervasive approach to conserve sensors’ limited energy. However, mobile sink makes data delivery a hard nut to crack since nodes need to know its latest location. Providing sink’s latest location by traditional flooding, erode the energy conservation goal. In this paper, we propose a Grid-Cycle Routing Protocol (GCRP) with the aim of minimizing the overhead of updating the mobile sink’s latest location. In GCRP, sensor field is partitioned into grid of cells and for each cell a grid cell head (GCH) is elected. Cycles of four GCHs is formed. Cycle(s) involving border GCHs is called exterior cycle and said to belong to a region. Another cycle involving non-boundary GCHs is called interior cycle, connecting GCHs of different regions. When sink stays at one location, it updates the nearest GCH, which in turn updates the other GCHs through exterior and interior cycle. Moreover, we propose a set of sharing rules that govern GCHs when and with who share sink’s latest location information. The performance of GCRP is evaluated at different number of nodes and compared with existing work using NS-2.31.