PoC: An IMS-based Wireless Value-added Service

This article introduces the Push-to-talk over Cellular( PoC) service, a new mobile value-added service based on the IP Multimedia Subsystem (IMS). Its implementation scheme is discussed and its Session Initiation Protocol (SIP) signaling exchange flow is described. Target user groups are predicted based on the analysis of the strengths and weaknesses of the PoC service. The article purports that the PoC system could undoubtedly be used as a platform for new services such as multimedia messaging, instant messaging, presence, and picture receiving and sending. Just like the short message service, the PoC service will help the terminal vendors, equipment vendors, content providers and operators setup a win-for-all industrial value chain.

China's Post and Telecommunications Service

In 1994, the handling capacity and business volume of China’s posts and telecommunications fulfilled the target of the Eighth Five-Year Plan (1991-1995) a year ahead of schedule and that of quadrupling the business volume during the period of 1980-2000 six years in advance. 1. The comprehensive communications capacity further enhanced with the construction of the telecommunication mains transmission network mainly composed of optical fibre cables is now in place. Seven

Research on telecommunication resale service supply chain coordination with revenue-sharing contract

The competition and cooperation between traditional telecom operators and resale operators in the supply chain are discussed, when the telecom industry developed telecommunication resale service. Supply chain contract is an effective way to coordinate the supply chain. This paper analyzes the revenue-sharing contract between telecom operators and resale operators. The study shows that by setting up a rational revenue-sharing ratio and wholesale price, a revenue-sharing contract can coordinate this supply chain, and telecom operators and resale operators can achieve a 'win-win' solution.

Lunar orbits for telecommunication and navigation services

Orbits that are frozen in an averaged model,including the effect of a disturbing body laying on the equatorial plane of the primary body and the influence of the oblateness of the primary body,have been applied to probes orbiting the Moon.In this scenario,the main disturbing body is represented by the Earth,which is characterized by a certain obliquity with respect to the equatorial plane of the Moon.As a consequence of this,and of the perturbing effects that are not included in the averaged model,such solutions are not perfectly frozen.However,the orbit eccentricity,inclination,and argument of pericenter present limited variations and can be set to guarantee the fulfillment of requirements useful for lunar telecommunication missions and navigation services.Taking advantage of this,a practical case of a Moon-based mission was investigated to propose useful solutions for potential near-future applications.

Toward Cloud Computing QoS Architecture:Analysis of Cloud Systems and Cloud Services

Cloud can be defined as a new computing paradigm that provides scalable, on-demand, and virtualized resources for users. In this style of computing, users can access a shared pool of computing resources which are provisioned with minimal management efforts of users. Yet there are some obstacles and concerns about the use of clouds. Guaranteeing quality of service QoS by service providers can be regarded as one of the main concerns for companies tending to use it. Service provisioning in clouds is based on service level agreements representing a contract negotiated between users and providers. According to this contract, if a provider cannot satisfy its agreed application requirements, it should pay penalties as compensation. In this paper, we intend to carry out a comprehensive survey on the models proposed in literature with respect to the implementation principles to address the QoS guarantee issue. © 2014 Chinese Association of Automation.

Technology Sub-diffusions:Consumptive Motivations for Mobile Phone Calls and Digital Services

Digital services interfaced with mobile phone lines are gradually being regarded as a core product in this modern age due to the high transmission speed of mobile technology.The research in this paper is based on the concept of product inter-dependence and actively explores the different consumptive motivations between the consumers' behavior of phone-call users and those who use digital services.This study also attempts to use a modifi ed diffusion model to estimate the consumers' collective behavior with a longitudinal approach.In this study,it can be inferred that psychological consumer motivations should dominate marketing policies.Thus,it was found that digital service users have more self-motivation and autonomy when adopting a new product because they have significantly higher innovative at-tributes than the segment of phone-call users.With these findings,we claim that we have discovered an unprec-edented concept for marketing managers who welcome the challenges of mobile digital services in the future.

Value-Added Tax （VAT） on Selected Financial Transactions

This paper deals with the approach to imposing value-added tax （VAT） on financial transactions. The VAT is a highly harmonized consumption tax within the European Union （EU）. VAT operational rules have been set down by the relevant directive of the Council of the EU. Under the directive, it is possible to select either exemption or taxation of financial transactions. Only the first option is permitted in the Czech Republic. Pros and cons of both models are described, in particular, the problems with determining the difference between financial transactions and other similar performance that must always be subject to tax. Potential lower VAT revenue or tax base assessment, as appropriate, seems to be crucial in the case of the taxation of financial transactions.

Mobile telecommunication companies’investment and pricing strategies for content service

Several mobile telecommunication companies(MTCs),such as AT&T,Verizon,and China Mobile,are investing in content services to drive continued growth as the telecom industry has become saturated.In this study,we investigate the competition between two MTCs,one of which(MTC 1)provides both data and content services,while the other(MTC 2)provides only data services.We propose a two-stage game-theoretic model to analyze the two MTCs'optimal pricing strategies for data service and content service as well as the investment strategy for the content service.Our analysis reveals that a higher value of value-added service offered by MTC 1 will incentivize it to raise its subscription fee for the content service and induce both MTCs to reduce the prices of their data services,which results in an increased demand for the content service and a decreased demand for MTC 2's data service.As MTC 1 invests further in the quality of the content service,it would benefit from increasing the subscription fee for the content service,and the two MTCs should increase the subscription fee for the data service.However,compared to the decisions in the scenario where MTC 1 does not provide content service,the provision of this service by MTC 1 leads to a lower subscription fee for the two MTCs'data services,an increase in the demand for MTC 1's data service,and a decrease in the demand for MTC 2's data service.These findings reveal that regularly monitoring market competition,as well as adjusting pricing strategies based on market scenarios and the value of services,can enhance competitiveness and long-term profitability for MTCs.

Design of an Interconnection Architecture and Sizing of Two (2) EPC Core Networks: The Case of Orange-Guinea

With the arrival of the 4G and 5G,the telecommunications networks have experienced a large expansion of these networks.That enabled the integration of many services and adequate flow,thus enabling the operators to respond to the growing demand of users.This rapid evolution has given the operators to adapt,their methods to the new technologies that increase.This complexity becomes more important,when these networks include several technologies to access different from the heterogeneous network like in the 4G network.The dimensional new challenges tell the application and the considerable increase in demand for services and the compatibility with existing networks,the management of mobility intercellular of users and it offers a better quality of services.Thus,the proposed solution to meet these new requirements is the sizing of the EPC(Evolved Packet Core)core network to support the 5G access network.For the case of Orange Guinea,this involves setting up an architecture for interconnecting the core networks of Sonfonia and Camayenne.The objectives of our work are of two orders:(1)to propose these solutions and recommendations for the heart network EPC sizing and the deployment to be adopted;(2)supply and architectural interconnection in the heart network EPC and an existing heart network.In our work,the model of traffic in communication that we use to calculate the traffic generated with each technology has link in the network of the heart.

“情指勤舆”一体化机制在电信诈骗案件侦查中的应用

随着大数据时代的到来,电信诈骗犯罪案件呈现逐渐增长趋势。破解电信诈骗案件侦防难题,须建立既懂技术又懂侦查的专业队伍,构建区域公安部门之间的协作机制,建立公安机关与电信、银行等行业的数据信息共享机制。为了有效打击电信诈骗,公安机关积极探索,形成了情报、指挥、勤务、舆情多部门一体化协同办案机制,并将其深度应用到电信诈骗案件侦查中。为了使“情指勤舆”一体化机制在电信诈骗案件侦防中得到更好应用,可以通过构建情指精控、情勤对接、舆情预警、分析研判一体化实战模式,提升公安机关电信诈骗案件侦办效能,增强人民群众自身预防电信诈骗的能力。

GB/T 42461-2023在电信行业网络安全服务中的应用

在电信行业网络安全保障支撑服务项目中应用国家标准GB/T 42461—2023《信息安全技术网络安全服务成本度量指南》开展项目成本测算,使服务供需双方对该项目的各项服务成本的构成形成共识,有效地指导了网络安全服务成本度量过程,合理地测算出项目总成本,显著提高了成本管理能力,优化了网络安全服务质量。

A New Theoretical Model for Pricing Telecommunications Services

The main methods of pricing telecommunications services can be summarized in two kinds: one is based on average cost, the other, on marginal cost. In order to combine the advantages of these two methods and overcome their disadvantages, this paper proposes a new theoretical model for pricing telecommunications services, the so-called comprehensive evaluation model, to evaluate the pricing methods.

Servitization in Construction and its Transformation Pathway: A Value-Adding Perspective

Against the current social and technological background dominated by services and technology,new opportunities are opening up for the industrial transformation and upgrading of the construction industry.Considering the successful transformation and upgrading of the manufacturing industry through servitization,scholars and practitioners have begun to explore the possibility of servitization in the construction industry.Current practices and theory show that different understandings of servitization in the construction sector exist;however,they are still in their infancy and lack a deep and systematic awareness,which does not benefit the transformation and upgrading of construction through servitization.Therefore,this paper systematically analyzes the motivation,definition,and implications of servitization in construction based on the value-adding nature of servitization and considers the problems confronting the construction industry.To facilitate this development,transformation pathways for servitization in construction are analyzed from multiple angles,including value co-creation,service innovation,and networked operation,which are in line with the new trends in digital construction.In addition,based on the supporting elements of construction,which include finance,human resources,technology,materials,and equipment,this paper examines the impact of servitization on the construction industry’s ecology.In short,we expect that this systematic analysis and exposition can provide a holistic view of servitization in construction from the inside out for scholars and practitioners and can help to promote servitization in construction.

Re-Evaluation of China＇s Service Trade Competitiveness： A Global Value Chain Perspective

Based on the Worm Input-Output Database （WIOD）, this paper conducts a forward-linkage decomposition of value-added in trade to estimate China＇s service value-added exports and its service sector＇s international competitiveness during 2000- 2014. Result indicates that during the sample period, China＇s service exports measured by forward-linkage decomposition method accounted for around 35% in its total export. While the value of services exported directly through the service sector accounted for a falling share, the value of services exported through other sectors represented an increasing share. China ranks second in the world in terms of market share of service exports. However, the revealed comparative advantage （RCA） of China＇s service exports and export sophistication remains limited.

Discussion on Subject Knowledge Service Pattern of Agricultural University Libraries

Taking Heilongjiang Bayi Agricultural University as an example, the discipline service practice was explored from the aspects such as free network resources and tool use, subject navigation, subject librarians, information sharing space and information literacy education. The typical cases were provided;the optimization of utilization method of network resources was put forward;the subject theme navigation was developed;and the information sharing space of specific discipline and other working strategies were carried out. The experience and enlightenment of active service for subject construction, priority service for key subjects, subject service by lay and step and seizing of the opportunity of subject service were summarized, which developed ideas and provided reference to the establishment of deep subject services of general libraries of colleges and universities.

Revenue-sharing analysis in the mobile value-added services

This article provides a framework e within which the revenue-sharing in mobile value-added services can be analyzed. It shows that the revenue-sharing ratio between a network operator and a content provider （CP） has no significant effect on prices, market shales or social welfare in the case of nonstandardization. This implies that the revenue-sharing ratio cannot be used as a policy variable.

Relationship between Corporate Image and Customer Loyalty in the Mobile Telecommunication Market in Kenya

Customer loyalty is considered to be a key ingredient in enhancing the survival of businesses especially in the situations faced by highly competitive industries. This study assessed the relationship between corporate image and customer loyalty. While the antecedents of customer loyalty connected with the marketing mix factors have been well investigated, much still remains to be studied regarding some of the intermediate conditions created by the marketing mix factors and customer loyalty. This study sought to investigate the relationship between the dimensions of corporate image and customer loyalty in the mobile telecommunication market in Kenya. The study was guided by several hypotheses that tested the nature of the relationship between corporate image and customer loyalty using four dimensions of corporate image, namely service quality, chief executive officer （CEO） reputation, brand image, and physical evidence. The study adopted the descriptive survey research design and used a multi-stage stratified sampling technique to target 320 respondents from among students across campuses of Kenyatta University （KU）. Primary data was obtained using a structured five-point Likert scale questionnaire and analyzed using Pearson product-moment correlation coefficient and regression analysis to test the degree of association between the dependent and the independent variables. The study registered a high response rate of 97.8% from the target respondents. The findings of the study based on the correlation analysis indicated that the four dimensions of corporate image positively correlate with customer loyalty at p 〈 0.01. The regression analysis results however showed that even though the four dimensions correlate with customer loyalty, only service quality and brand image significantly predict customer loyalty. The regression model used explained 25% variation in the dependent variable. The null hypotheses one and four were supported while hypotheses two and three were not. The study concluded that of the four dimensions of corporate image, brand image and service quality predict customer loyalty within the Kenyan mobile telecommunication sector. The study suggests that future research undertakes integrate aspects of quality management into the dimensions of corporate image in order to predict variations in customer loyalty.

中国与RCEP国家电信、计算机和信息服务贸易国际竞争力探析

伴随着新一轮信息技术的迅速发展,以信息技术为基础的电信、计算机和信息服务贸易得到了快速发展,已成为国家经济发展的重要推动力。RCEP协定的实施为中国与RCEP其他国家在该领域的发展提供了更大的发展空间。在分析RCEP国家电信、计算机和信息服务贸易发展现状的基础上,运用IMS、RCAS、TC、NERCA四个指数对中国与RCEP其他国家在该行业的国际竞争力进行全面深入比较,分析中国与RCEP其他国家在该行业发展的机遇与挑战,据此提出充分利用好RCEP经贸规则、加强与RCEP各国在该领域合作等促进中国与RCEP其他国家在该领域的发展建议。