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1.
高速下行分组接入HSDPA(HighSpeedDownlinkPackageAccess)是第三代移动通信后继发展中非常重要的增强技术。HSDPA以5MHz的带宽向WCDMA的下行提供高达10~14Mbps的分组数据,用以实现多用户高速下行数据以及流媒体业务。本文通过研究高速下行分组技术的发展现状及在发展过程中遇到的问题,分析了影响该项技术发展的几个重要因素,并对这些问题提出了笔者的观点。  相似文献   

2.
本文根据我们参加国际标准化活动的经验和体会,对照我国石油行业标准与国际标准和国外先进标准的差异进行分析,最终表明:目前为加速我国石油工业采用通用的国际标准和国外先进标准的步伐,我们有必要加大参加国际标准化活动的力度,加强国际标准化动态的跟踪研究,注重国内归口单位与各专标委的密切合作,努力建立起多方信息交流渠道,使采标与行业标准化工作融为一体,共同促进石油行业标准化的发展,为石油天然气总公司国际化战略服务.  相似文献   

3.
This paper considers how the mobile phone industry is changing from a value chain to a value network using the Japanese market as an example. Value networks involve a larger number of firms, a more complex set of relationships between them, and agreements on a greater number of interface standards than do value chains. Building from this concept of a value network, the paper shows how: (1) agreements on many of these interface standards are enabling connections to be made between the mobile phone and other industries; (2) the resulting products and services often reflect the technological capability of phones and the existing products and services in these “other” industries; (3) each new interface standard requires a new critical mass of users; and (4) a critical mass of users for a new interface standard partly builds from previously created critical masses of users. On a practical level, this paper's analysis adds to a growing list of evidence that the growth in Western mobile Internet markets is nowhere near its potential and that the change from a value chain to a value network requires a different form of standard setting, policy making, and management than are currently used in the mobile phone industry.  相似文献   

4.
In 1996, the Korean mobile communication market was the first in the world to commercialize the code division multiple access (CDMA). Since then, the voice-based mobile phone market has continued to grow and has now reached near saturation. Having recognized the potential of the mobile data service as a new source of profit, telecommunication operators are scrambling to evolve 3.5 generation (3.5G) technology in order to lead market competition. Recently, the Korean 3.5G mobile telecom market has faced stiff competition from CDMA-based EVDO Rev.A and global system for mobile telecommunications (GSM)-based high-speed downlink packet access (HSDPA). In addition, the world's first wireless LAN-based wireless broadband internet (WiBro) service was commercialized in June, 2006. This paper reviews the current status of the 3.5G technology and analyzes the service standardization strategies from the viewpoint of technological evolutions. This paper also suggests implications for Korea's specific circumstances where different mobile telecom technologies complement and compete with one another. Korea's experiences may serve as important lessons for other countries or operators who try to introduce the 3G and look beyond mobile telecom technologies.  相似文献   

5.
6.
Investment decisions in the wireless industry applying real options   总被引:1,自引:0,他引:1  
The wireless industry is one of the most capital intensive high-technology industries. This paper applies real options techniques to estimate investments under uncertainty in two new ventures: (a) deferral of the expansion from 2.5G to 3G networks; and (b) expansion of a 2.5G network using Wi-Fi as an alternative technology. The cases are examined and analyzed both qualitatively and quantitatively, using realistic assumptions and parameters. Investment cost, number of subscribers, pricing of services, and risk are at the core of investment decision processing. In both cases, sensitivity analysis of the value of the (real) option considering the above key parameters was conducted, to extrapolate useful findings that should be taken into consideration by the decision makers in wireless companies.  相似文献   

7.
Beginning with the historical role and importance of multi-physical standards in wireless telecommunications for the future in the US, Japan and Europe, this paper provides a cohesive vision of how wireless communication, voice over Internet protocol (VoIP) is likely to develop. Also covered in this paper are its benefits, the technical and regulatory support required to realize this vision and an assessment of its potential impact on the structure of the telecommunications industry. Although the competitive structure of the Internet is relatively open, several factors, such as frequency allocation policy and radio interface standards, could block the efficient evolution of wireless services to an IP platform. The paper proposes two major technical requirements to enable effective competition in wireless VoIP and achieve greater technical productivity.  相似文献   

8.
This paper tracks increasingly aggressive initiatives by the United States government to reallocate spectrum on an expedited and unilateral basis well before conclusion of inter-governmental coordination. Rather than embrace the customary commitment to achieve consensus on global spectrum allocations at the International Telecommunication Union (“ITU”), the Federal Communications Commission (“FCC”) has auctioned off large blocks of frequencies for the next generation (“5G”) of wireless services.The FCC might have framed its first 5G auction, reassigning Ultra High Frequency (“UHF”) spectrum, as a one-time deviation from compliance with long standing, intergovernmental coordination procedures. These frequencies have ideal signal propagation characteristics and the Commission could use financial incentives—unavailable in most nations—to expedite “repacking” by incumbent broadcasters willing to move, share or abandon spectrum in exchange for ample financial compensation. However, the FCC has continued to auction off 5G spectrum on grounds that it must find ways to abate an acute shortage of wireless bandwidth and doing so will regain or maintain global leadership in wireless technologies. This paper offers a critical rebuke to unilateral spectrum management, because the short-term benefits expected by the U. S. government likely will be offset by countervailing harms to 5G manufacturers, carriers and consumers. The paper tracks fractious preparation for the ITU's 2019 World Radio Conference by the U.S. delegation and the mixed record achieved there. Additionally, the paper explains how injecting trade, industrial policy and national security issues at the ITU can trigger more delays and disputes, including possible retaliation by nations displeased with U.S. efforts to subvert traditional technology optimization goals.A worst case scenario has the ITU deadlocked and unable to reach closure on “mission critical” spectrum planning issues at World Radio Conferences, convened every four years. The paper concludes that costs and likely challenges to the efficacy and legitimacy of the ITU will reduce the benefits accruing from the FCC's unilateral, spectrum planning campaign.  相似文献   

9.
PERSPECTIVE: Creating a platform-based approach for developing new services   总被引:6,自引:0,他引:6  
This article explores the design and renewal of services. We do this through the lens of methods and processes for developing product platforms for physical products. We first articulate principles for effectively developing next generation product lines using platform concepts, and illustrate these principles with examples drawn from computer and electronic products. These principles include creating new insights into a firm's market segmentation, understanding both the perceived and latent needs of users, and doing so for new as well as existing groups of customers. These platform principles also include the design and implementation of subsystems and interfaces that can be used across different products and across different product lines. Such subsystems and interfaces become the operational platforms for new product development purposes. An approach to platform-centric organization design is also presented.
We then make the extension to services by applying these principles to understand the innovations of a large international reinsurer. This company has resegmented its market to identify unfulfilled needs and growth opportunities. It also defined new service platforms, comprising operational activity areas that closely follow the value chain of how it wished to provide new reinsurance solutions to its customers. This reinsurer also had to organize differently to facilitate the development and deployment of the capabilities required for its new services. The analogies between these service innovations and those platform innovations of manufacturers are both clear and striking.
We conclude by considering the difficulties faced by firms seeking to transition from a single product, nonplatform focused approach to new product development to the platform-centric ones described here.  相似文献   

10.
This paper examines empirical cases of standardization in the Korean mobile market as vehicles for approaching the broader political and institutional context of standardization in telecommunications. A consideration of Korean standardization in the mobile telecommunications market is particularly interesting because it reveals how the state's political interests influence standards decisions, which are primarily driven by market and technological changes in telecommunications. Judged from the social construction of technology perspective which sheds light not only on technology itself but also on political, social and economic interests that surround transformations in technology, this paper highlights power relations among the major actors that have made technology standards decisions in Korea regarding second (2G) and third-generation (3G) mobile telephony. The paper also attempts to show how the Korean government has dealt with the diverse interests of various market actors while pursuing its own policy agenda.  相似文献   

11.
The advent of a new generation of wireless communications has punctuated the dawn of every decade in recent times. Upgrades to mobile electronic systems represent faster and more robust capabilities of data transfer but bring with it a wide set of complementary changes as they are underpinned by harmonised specific spectrum bands, fresh international technical standards, new network operation requirements, innovative cellular devices as well as new services and a broader array of potential commercial use applications. This paper presents a systematic outline of the development of 5G-related research until 2020 as revealed by over 10,000 science and technology publications. The exercise addresses the emergence, growth, and impact of this body of work and offers insights regarding disciplinary distribution, international performance, and historical dynamics. Findings reveal the progressive growth of the 5G research over the years after original contributions in 2010 and point to a “take-off” around 2014. A set of stylised facts regarding this technology since its infancy are of interest to engineers, regulators and innovation strategists and policy-makers.  相似文献   

12.
介绍了ISO/TC67第21届年会组织概况及会议重要决议,对TC67石油工业国际标准化的发展进步,标准制定数量和速度,各成员国采标方法和经验,以及相关国际组织工作动态等作了集中评述,在对比分析的基础上就ISO/TC67中国国内归口管理,石油工业标准化(SY)工作与国际接轨,标准化与电子化,管材标准与国际组织同期审议等提出了建议。  相似文献   

13.
石油天然气行业标准化正处在全面组织标准的实施和实施监督的重要时期.应把着眼点和着力点倾向标准的实施上来.标准的实施和实施监督是标准化动态管理的基础.在“采标”过程特别是标准转化过程中,还存在技术处理方面需要统一认识的问题.在标准化改革方面,建议石油工业标准化技术委员会推行会员制,以此作为改革的突破口.  相似文献   

14.
《Telecommunications Policy》2006,30(5-6):297-313
Xiaolingtong (XLT), a new type of mobile phone system based on PHS technology for wireless access of fixed-line telephone networks, has grown very rapidly in China. However, there are many doubts about the future of XLT once 3G (the third generation of mobile communication) is finally employed. This paper proposes a theoretical framework to assess and compare XLT and 3G from four perspectives: technology, market demand, business models and government policy. It concludes that XLT and 3G will coexist with existing 2G/2.5G mobile communication networks for a considerable period of time. With service collaboration and integration, the coexistence of both of these technologies can enhance China's mobile communication infrastructure and support the growth of mobile commerce.  相似文献   

15.
Both academics and practitioners emphasize the importance for product firms of implementing service-led growth strategies. The service transition concept is well established, namely a unidirectional repositioning along a product-service continuum—from basic, product-oriented services towards more customized, process-oriented ones—ultimately leading to the provision of solutions. We challenge this service transition assumption and develop alternative ones regarding how product firms should pursue service-led growth. Using ‘problematization methodology’, and drawing on findings from thirteen system suppliers, we identify three service-led growth trajectories: (1) becoming an availability provider, which is the focus of most transition literature; (2) becoming a performance provider, which resembles project-based sales and implies an even greater differentiation of what customers are offered; and, (3) becoming an ‘industrializer’, which is about standardizing previously customized solutions to promote repeatability and scalability. Based on our critical inquiry, we develop two alternative assumptions: (a) firms need to constantly balance business expansion and standardization activities; and (b) manage the co-existence of different system supplier roles. Finally, we consider the implications for implementing service-led growth strategies of the alternative assumptions.  相似文献   

16.
《Telecommunications Policy》2006,30(8-9):464-480
Municipal electric utilities (MEUs) are increasingly expanding into telecommunications services. Such entry is interesting in several respects. First, MEUs marry two potential pathways for the growth of telecommunications access infrastructure and services: public ownership of last-mile facilities and electric power company expansion into telecommunications. Second, municipalities are key early adopters of next generation access technology in the form of both fiber-to-the-home (FTTH) and broadband wireless (e.g., WiMax) systems. Third, MEUs are at the nexus of the debate over the proper role for local government in promoting broadband Internet access. Most homes in the United States are served by investor-owned local telephone and cable television providers, using company-owned wireline infrastructure. These providers have generally opposed municipal entry, arguing that it will crowd out private investment and represents an unfair and less efficient form of competition. A number of states have acted to limit—or in some cases—to promote such entry. Before engaging in this debate, it is necessary to have a clearer picture of the current state of municipal entry and the local demographic, cost, industry, and policy factors that influence its evolution. To address this need, this paper reports the results of an empirical analysis of MEUs that provide communications services to the public. This analysis shows that MEUs are more likely to offer such services if they also provide internal communication services to support their electric utility operations (scope economies); are relatively close to metropolitan areas (lower backhaul costs); are in markets with fewer competitive alternatives (cable modem and DSL service availability limited); and which are less encumbered by regulatory barriers to entry (in communities in states which do not restrict municipal entry into telecommunication services). Of these results, the competitive impacts are the least straight-forward to interpret, suggesting richer dynamics and avenues for further research.  相似文献   

17.
Even before the International Telecommunication Union (“ITU”) reaches consensus on spectrum allocations for fifth generation wireless technologies (“5G”), commercial ventures scramble to offer new equipment and services. Expediting 5G wireless service can benefit consumers and businesses at the risk of stressing the traditional process of spectrum planning that combines study, dialogue and consensus building at ITU conferences.This paper explains why most nations refused to endorse key United States 5G spectrum allocation proposals at the ITU’s, 2015 World Radio Conference. U.S. representatives underestimated the time needed for consensus building, despite increasing demand for wireless video and the evolving Internet of Things. Other contributing factors include U.S. support for treating spectrum like property, use of “incentive auctions” to clear broadcast television spectrum with unprecedented speed and enough existing wireless spectrum allocations in most nations.The paper concludes that the U.S. cannot expect faster frequency reallocations, particularly when it and other nations pursue matters having little to do with spectrum optimization. The paper offers recommendations on best practices for improving the consensus building process.  相似文献   

18.
标准是新一轮国际贸易竞争的核心,文章选取了每年颁布的汽车标准数量和汽车产品竞争力RCA值分别作为标准化和汽车产品出口国际竞争力的评价指标。以我国汽车产业1988~2010年的数据为基础,利用协整检验、Granger因果关系检验对标准化与我国汽车产品出口竞争力的关系进行了实证分析。结果表明:标准化、利用外资、研发投入与汽车产品出口竞争力之间存在着长期均衡关系,标准化有助于我国汽车产品出口竞争力的提升。在实证的基础上,从国际汽车标准制定及其推广、我国汽车企业创新能力、新能源汽车标准制定等方面提出了相应的对策。  相似文献   

19.
标准化工作是提高石油工程技术服务质量、促进企业发展的有效途径。做好标准化工作是企业实现现代管理和科学管理的需要。面对加入WTO和市场放开的严峻形势,中小型石油工程技术服务企业要适应市场的需求,建立适应市场经济的企业标准体系,用标准化工作促进技术创新,加强服务意识,提高人员素质,改进技术装备,做强做专石油工程技术服务的主营业务。  相似文献   

20.
随着经济全球化和信息技术的飞速发展,全球产业正在经历从制造业向服务业转型,服务外包作为国际产业升级的新态势,已经成为世界各国提升产业竞争力的重要引擎。文章以印度、爱尔兰和以色列三国服务外包的发展经验作为参考,结合天津服务外包产业发展的现状与问题,从政策、人才、企业3个方面,提出了天津加快发展服务外包产业的路径选择。  相似文献   

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