Dissertations / Theses on the topic 'Third generation (3G)'

As a license-exempt technology, Ultra Wideband (UWB) can be used for numerous commercial and military applications, including ranging, sensing, low-range networking and multimedia consumer products. In the networking and consumer fields, the technology is envisioned to reach the mass market, with a very high density of UWB devices per home and office. The technology is based on the concept of transmitting a signal with very low power spectral density (PSD), while occupying a very wide bandwidth. In principle, the low emissions mask protects incumbent systems operating in the same spectrum from being interfered with, while the wide bandwidth offers the possibility of high data rates, in excess of 250 Mbps. UWB has been regulated to operate in the 3.1 to 10.6 GHz portion of the spectrum, with an emissions mask for the lower and upper bands outside this range. The commercial wireless mobile services based on third generation (3G) networks occupy a portion of the spectrum in the 2 GHz band, falling under the UWB emissions mask. UWB and UMTS (Universal Mobile Telephone Systems) devices will coexist, sharing the same spectrum. In this research, we investigate the UWB-3G coexistence problem, analyzing the impact of UWB on UMTS networks. Firstly, we review the mathematical model of the UWB signal, its temporal and spectral properties. We then analyze and model the effects of the UWB signal on a narrowband receiver. Next, we characterize the response of the UMTS receiver to UWB interference, determining its statistical behavior, and establishing a model to replicate it. We continue by proposing a link level model that offers a first order quantitative estimate of the impact of a UWB interferer on a UMTS victim receiver, demonstrating the potentially harmful effect of UWB on the UMTS link. We elaborate on that initial evidence by proposing and implementing a practical systemlevel algorithm to realistically simulate the behavior of the UMTS network in the presence of multiple sources of UWB interference. We complete the research by performing UMTS system level simulations under various conditions of UWB interference, with the purpose of assessing its impact upon a typical UMTS network. We analyze the sensitivity of the main UWB parameters affecting UMTS performance, investigating the coverage and capacity performance aspects of the network. The proposed analysis methodology creates a framework to characterize the impact that mass-deployed UWB can have on the performance of a 3G system. The literature on UWB-3G coexistence is inconclusive, and even contradictory, as to the impact UWB can have on the performance of third-generation wireless networks. While some studies show that UWB can be highly detrimental to 3G networks, others have concluded that both systems can gracefully coexist. Through this study, we found that at the current emissions limits regulated for UWB, a mass uptake of this technology can negatively affect the performance of third-generation (3G) wireless networks. The quality of service experienced by a 3G user in close proximity to an active UWB device can be noticeably degraded, in the form of reduced coverage range, poor voice quality (for a voice call), lower data rates (for a data session) or, in a extreme situation, complete service blockage. As the ratio of UWB devices surrounding a 3G user grows, the degradation becomes increasingly more evident. We determined that in order for UWB tocoexist with 3G networks without causing any performance degradation, a minimum power backoff of 20 dB should be applied to the current emission limits.
Ph. D.

Third generation wireless mobile communication networks are characterized by the increasing utilization of data services â e-mail, web browsing, video streaming, etc. Such services allow the transition of the network from circuit switched to packet switched operation (circuit switched operation will still be supported), resulting in increased overall network performance. These new data services require increased bandwidth and data throughput, due to their intrinsic nature. Examples are graphics-intensive web browsing and video streaming, the latter being delay sensitive and requiring priority over less sensitive services such as e-mail. This increasing demand for bandwidth and throughput has driven the work of third generation standardization committees, resulting in the specification of improved modulation and coding schemes, besides the introduction of more advanced link quality control mechanisms. Among the several proposals for the evolution from 2G to 3G, GPRS (General Packet Radio Services) and EDGE (Enhanced Data Rates for GSM Evolution) stand out as transitional solutions for existing TDMA IS-136 and GSM networks (they are also referred to as 2.5G systems). In the CDMA arena, WCDMA (Wideband CDMA) has emerged as the most widely adopted solution, with CDMA 2000, an evolution from IS-95, also being considered. This thesis compiles and analyzes the results of the work by the standardization committees involved in the specification of 3G standards, focusing on the receiver performance in the presence of additive noise, fading and interference. Such performance results will ultimately determine design and optimization conditions for 3G networks. This document concerns the description of the TDMA-based 2.5G solutions that allow the introduction of multimedia and enhanced data services to existing 2G networks. It focuses on GPRS and EDGE. It also addresses WCDMA â a 3G spread spectrum solution. Such proposals permit the utilization of existing spectrum with increased efficiency, yielding extended network capacity and laying the ground for full support of wireless multimedia applications. The study is focused on the link implementation aspect of these solutions, showing the impact of the modulation schemes and link quality control mechanisms on the performance of the radio link.
Master of Science

Real-time video communication over wireless networks is a challenging problem because wireless channels suffer from fading, additive noise and interference, which translate into packet loss and delay. Since modern video encoders deliver video packets with decoding dependencies, packet loss and delay can significantly degrade the video quality at the receiver. Many error resilience mechanisms have been proposed to combat packet loss in wireless networks, but only a few were specifically designed for packet switched video telephony over Third Generation (3G) networks. The first part of the thesis presents an error resilience technique for packet switched video telephony that combines application layer Forward Error Correction (FEC) with rateless codes, Reference Picture Selection (RPS) and cross layer optimization. Rateless codes have lower encoding and decoding computational complexity compared to traditional error correcting codes. One can use them on complexity constrained hand-held devices. Also, their redundancy does not need to be fixed in advance and any number of encoded symbols can be generated on the fly. Reference picture selection is used to limit the effect of spatio-temporal error propagation. Limiting the effect of spatio-temporal error propagation results in better video quality. Cross layer optimization is used to minimize the data loss at the application layer when data is lost at the data link layer. Experimental results on a High Speed Packet Access (HSPA) network simulator for H.264 compressed standard video sequences show that the proposed technique achieves significant Peak Signal to Noise Ratio (PSNR) and Percentage Degraded Video Duration (PDVD) improvements over a state of the art error resilience technique known as Interactive Error Control (IEC), which is a combination of Error Tracking and feedback based Reference Picture Selection. The improvement is obtained at a cost of higher end-to-end delay. The proposed technique is improved by making the FEC (Rateless code) redundancy channel adaptive. Automatic Repeat Request (ARQ) is used to adjust the redundancy of the Rateless codes according to the channel conditions. Experimental results show that the channel adaptive scheme achieves significant PSNR and PDVD improvements over the static scheme for a simulated Long Term Evolution (LTE) network. In the third part of the thesis, the performance of the previous two schemes is improved by making the transmitter predict when rateless decoding will fail. In this case, reference picture selection is invoked early and transmission of encoded symbols for that source block is aborted. Simulations for an LTE network show that this results in video quality improvement and bandwidth savings. In the last part of the thesis, the performance of the adaptive technique is improved by exploiting the history of the wireless channel. In a Rayleigh fading wireless channel, the RLC-PDU losses are correlated under certain conditions. This correlation is exploited to adjust the redundancy of the Rateless code and results in higher Rateless code decoding success rate and higher video quality. Simulations for an LTE network show that the improvement was significant when the packet loss rate in the two wireless links was 10%. To facilitate the implementation of the proposed error resilience techniques in practical scenarios, RTP/UDP/IP level packetization schemes are also proposed for each error resilience technique. Compared to existing work, the proposed error resilience techniques provide better video quality. Also, more emphasis is given to implementation issues in 3G networks.

Recent rapid advancements in mobile communication and emerging demands for complicated multimedia content and services over mobile systems have caused a dramatic increase in research interest in this area. Among the topics covering multimedia service performance over the wireless interface, the quality of received multimedia content is an important issue. With the increase of visual media in mobile services, user opinion acquired through perception of received image quality will play an increasingly important role in determining the effectiveness of such services. The work documented in this thesis is motivated by the general lack of published work on software test beds for Third Generation Mobile Network (3G) and in particular for investigating mobile environment multimedia quality degradation. A 3G multimedia quality analysis system is presented, subjecting the input multimedia stream to the simulated 3G radio activities and measuring its degradation in terms of human perception. This approach takes a new and different model of multimedia quality measurement in a wireless communication domain, showing the possibility of a more effective approach that can be applied in many cases for assisting service quality assurance research across this area. The development of this software system is covered in detail together with in-depth analysis of multimedia image quality over a simulated 3G radio interface. Universal Mobile Telecommunications System (UMTS) is the 3G standard chosen for study in this work. The suggested test bed simulates a single Frequency Division Duplex (FDD) downlink UMTS Territorial Radio Access (UTRA) channel, where the received media's image analysis is performed using a Human Vision System (HVS) based image quality metric. The system aims to provide a multipurpose and versatile multimedia 3G test bed for use in testing of various solutions for protecting multimedia data across a 3G radio interface. Furthermore, it produces effective human vision oriented feedback on visual media degradation, providing a new and efficient method to address effectiveness of solutions in multimedia delivery over a mobile environment. This thesis shows the ability of HVS-based image quality metric in analyzing degradation of visual media over a noisy mobile environment. This presents a novel direction in the area of telecommunication service multimedia quality analysis, with potential user quality perception being considered on top of data or signal-based error measurements. With such a new approach, development of multimedia protection solutions can be made more effective. Effective feedback provided by considering quality measurement with strong correlation to human perception allows close analysis of user visual discrimination across an image. An example of the usefulness of this information is especially visible if considering development of a content-based multimedia data protective system that provides different levels of protection, depending on the importance of visual media. An apparent potential application of this thesis is in the testing of a multimedia/image protection protocol in a downlink channel. Future work might aim to extend the current system by adding network level traffic simulations and further addition of dynamic network control components, further considering network traffic conditions.

Approved for public release; distribution is unlimited
With a growing number of consumers utilizing the Internet, companies have foreseen a consumer demand for high-speed wireless access. Since current mobile cellular systems can transfer at most 115.2 kbps per user, a third generation of mobile cellular service has been under development by various organizations since 1997. This new generation of technology will support data rates up to 2 Mbps for stationary mobiles and up to 144 kbps for vehicular traffic. This thesis focuses mainly on TD-SCDMA, one of many candidates submitted to the International Telecommunications Union for third generation review. The standard, developed in China by the Chinese Academy of Telecommunications Technology, employs both code-division multiple access and time-division duplexing to support both forward and reverse transmissions on one physical layer. This aspect, along with other common features of TD-SCDMA, will be studied and evaluated to determine if this new technology is a viable option for future commercial or military deployment.

Since its introduction in 1993, the turbo coding error-correction technique has generated a tremendous interest due to its near Shannon-limit performance. Two key innovations of turbo codes are parallel concatenated encoding and iterative decoding. In its IMT-2000 initiative, the International Telecommunication Union (ITU) adopted turbo coding as a channel coding standard for Third-Generation (3G) wireless high-speed (up to 2 Mbps) data services (cdma2000 in North America and W-CDMA in Japan and Europe). For battery-powered hand-held wireless terminals, energy consumption is a major concern. In this thesis, a new design for an energy-efficient turbo decoder that is suitable for 3G wireless high-speed data terminals is proposed. The Log-MAP decoding algorithm is selected for implementation of the constituent Soft-Input/Soft-Output (SISO) decoder; the algorithm is approximated by a fixed-point representation that achieves the best performance/complexity tradeoff. To attain energy reduction, a two-stage design approach is adopted. First, a novel dynamic-iterative technique that is appropriate for both good and poor channel conditions is proposed, and then applied to reduce energy consumption of the turbo decoder. Second, a combination of architectural-level techniques is applied to obtain further energy reduction; these techniques also enhance throughput of the turbo decoder and are area-efficient. The turbo decoder design is coded in the VHDL hardware description language, and then synthesized and mapped to a 0. 18μm CMOS technology using the standard-cell approach. The designed turbo decoder has a maximum data rate of 5 Mb/s (at an upper limit of five iterations) and is 3G-compatible. Results show that the adopted two-stage design approach reduces energy consumption of the turbo decoder by about 65%. A prototype for the new turbo codec (encoder/decoder) system is implemented on a Xilinx XC2V6000 FPGA chip; then the FPGA is tested using the CMC Rapid Prototyping Platform (RPP). The test proves correct functionality of the turbo codec implementation, and hence feasibility of the proposed turbo decoder design.

Thesis (Ph. D.)--Case Western Reserve University, 2008.
Department of Information Systems, Weatherhead School of Management. Includes bibliographical references. Available online via OhioLINK's ETD Center.

O crescente aumento da demanda de tráfego nas redes celulares vem aumentando a necessidade de uma melhor utilização dos recursos do sistema, já que sua expansão é custosa. Nas estações rádio base (ERB), a disponibilidade de largura de faixa de freqüências é limitada e desta maneira, em uma rede de comunicação móvel celular, o controle de admissão de chamadas exerce grande influência no desempenho do sistema, pois determina a utilização de banda das ERBs e se uma determinada quantidade de recursos (banda) será alocado ou não para uma determinada chamada. O desempenho da rede pode ser atrelado a determinados parâmetros, como a probabilidade de bloqueio de novas chamadas, probabilidade de bloqueio de chamadas handoff e a utilização de banda da rede. Este trabalho propõe um controle de admissão de chamadas que, no atendimento de uma chamada, faz o empréstimo de banda de chamadas em andamento na célula no caso de banda insuficiente. O sistema adota um mecanismo heurístico que determina a banda disponível para novas chamadas conforme os valores de certos parâmetros do sistema. O empréstimo de banda é realizado em chamadas em andamento nas células até níveis mínimos estabelecidos para cada tipo de chamada, que se diferenciam pelas necessidades de banda de cada uma. O algoritmo foi aplicado às bandas e características de uma rede de terceira geração (3G), que possui chamadas de voz, videoconferência, interação multimídia, e-mail, downloads e transferência de arquivos e a uma rede GSM/GPRS (global system for mobile communications/ general packet radio service), que possui chamadas de voz e de dados. Os resultados mostram melhorias na probabilidade de bloqueio de novas chamadas, probabilidade de bloqueio de handoff e na utilização de banda do sistema.
The recent growth in traffic loads in cellular networks has seen the need for a better use of system resources as its expansion is expensive. In the base transceiver station (BTS), the bandwidth availability is limited. Thus, in cellular networks the call admission control greatly influences the system performance because it determines the bandwidth use of the BTSs and if an amount of resources will or will not be allocated to a call. The network performance can be evaluated by parameters such as blocking probability of new calls, dropping probability of handoff calls and bandwidth use. This work proposes a call admission control that carries out the bandwidth borrowing when a call arrives and there is not enough bandwidth. The system makes use of a heuristic mechanism that determines the available bandwidth for the new calls according to some parameter values of the system. The bandwidth borrowing is applied to the cell ongoing calls until the minimum levels for each type are met. The algorithm was applied to the bandwidths and characteristics of a third generation cellular network, which supports voice calls, videoconference, multimedia interaction, e-mails, downloads and file transfers. It was also applied to a GSM/GPRS (global system for mobile communications/ general packet radio service), which supports voice and data calls. The results show improvements in the blocking probability of new calls, dropping probability of handoff calls and in the bandwidth use of the system.

Nowadays, Third Generation (3G) mobile phones equipped with powerful hardware are becoming popular and dominating the market of cellular com-munication systems. Features such as music and video players, in-built Global Positioning System (GPS) receivers, navigation maps, Internet connectivity and high resolution cameras has converted mobile phones into so called Smartphones. With the increase in applications and services, limitations on energy consumption are also increasing. Therefore, it is more im-portant for manufacturers to nd e ective means of increasing battery life of mobile phones, as the mobile device itself is energy consuming and longer operational times are demanded by customers. Good energy mangement in mobile phones requires a good understanding of the energy usage in mobile phones. To this end, this thesis report presents the results of power and energy consumption measurements conducted on available Smartphones. The services under investigation includes basic Smartphone functionalities and few Internet services are studied and conclusions were drawn. This paper presents a cost e ective methodology for reliable measurements of energy on Smartphones. It also examines the e ect of operating systems on en-ergy consumption in mobile phones and reports less energy consumption for Android supported phones. The energy consumption of these Smartphones with respect to various applications has been studied and related to Quality of Experience of users'. Based on the results conclusions were drawn.
This Thesis will serve as a guide to manufacturers and Users of smartphones while choosing smartphones and designing energy-efficient protocols.
+46 (0)723260656

Radio frequency identification (RFID) is a versatile wireless technology usedworldwide. The fields of applications are many and its popularity constantlygrows due to smaller in size, better and less expensive components. RFID isused to identify, track or share information about an object using radio waves.

This master thesis describes the process of designing and implementing ahandheld UHF RFID reader. The goal was to, based on a UHF RFID-chipdesign a fully functional, small in size and power efficient device. Amicrocontroller provides the user interface and is also used to control theRFID-chip and a Bluetooth device. A Bluetooth- and GPRS-compatible mobilephone will be used to forward data to a server connected to the Internet. Allparts of the design are described, such as the printed circuit board design aswell as the software for the micro controller and the mobile phone.

Because the extent of this thesis it is neither possible nor necessary to dig toodeep into the Bluetooth- or GPRS-protocol. The focus will be on designingsoftware and hardware for the handheld unit.

Radio frekvens identifiering (RFID) är en mångsidig trådlös teknik somanvänds över hela världen. Områdena där tekniken används är många och dess popularitet växer konstant tack vare mindre storlek, bättre och billigarekomponenter. RFID används för att identifiera, spåra eller dela med siginformation om ett objekt med radiovågor.

Det här examensarbetet beskriver processen av design och implementering aven handburen UHF RFID läsare. Målet har varit att, baserat på ett UHF-RFIDchip, designa en fullt fungerande, liten och strömsnål enhet. En microcontroller förser dels användaren med ett användargränssnitt och sköter delskommunikationen med RFID chip och en blåtandsmodul. En blåtands- ochGPRS- eller 3G-kompatibel mobiltelefon används for att skicka vidare data tillen server kopplad till Internet. Alla delar av designen är beskrivna, så som PCB design, mjukvara för micro controllern och mobiltelefonen.

På grund av omfattningen av det här examensarbetet så har det inte varitmöjligt eller nödvändigt att gräva för djupt i Blåtands- eller GPRS/3Gprotokollen. Fokus är på att designa hårdvara och mjukvara för den handhållna enheten.

M. Tech. Electrical Engineering.
This study proposes a mathematical optimisation approach which invokes Genetic Algorithm (GA) for initialisation and application of Tabu Search (TS) algorithm in finding the sites of node Bs in the network to enable it have the potential to support an increased number of users requiring the increased number of services. The global optimisation can be obtained in terms of great probability as GA is applied to global search and TS is applied to the local search. The particular memory ability of TS can be integrated to GA and the prematurity of GA can be avoided by virtue of the hill-climbing ability of TS. The problem to be addressed is the determination of optimal locations of node Bs in the network based on the user distribution, while improving the QoS. The proposed approach considers the site selection as an integer problem and the site placement as a continuous problem. The two problems are focused on concurrently - finding the optimal number of node Bs that satisfies the capacity requirements in the network and hence QoS improvement. The proposed algorithm combines the strength of Genetic and Tabu Search algorithms in successive elimination of node Bs after their random distribution in the area of study. The results showed that the proposed approach produced fewer number of node Bs sites in the network that provided the required QoS. In addition, it exhibited high fitness function in the simulations meaning that it has the higher ability of achieving the objective function when it was compared to TS and GA.

碩士
國立高雄第一科技大學
行銷與流通管理所
94
Abstract In the twenty-one century, the focus of information technology had moved to information communication technology. The third generation(3G) communication system offer higher-speed data transmission and various service, like voice, data, and video-phone, but the 3G users is not popular. To understand the adoptive factor of consumers, this study reviewed literatures and formed the three level adoptive factors of for 3G users and find out the weight of each adoptive factor by Fuzzy AHP from service provider’s and consumers perspective. Finally, results of this study indicates that they pay more attention on security, private and quality of telecommunications. This results can then provide to 3G service providers for their reference daft their promoted strategies so as to enlarge number of consumers.

碩士
國立勤益科技大學
電子工程系
98
This thesis introduces the measure technique and signal anaysis of the third generation mobile phone base station and, thoroughly, explains the required instruments during measuring and the proposed analysis method. Some currently used measurement and analysis methods for the base station environment are also listed and explained. The measurements include: (1) RSCP: Received Signal Code Power, (2) Ec/Io: the ratio of received signal to nearby interference. The measured data of the field test were mapping to the road map to make the comparison between the before and after ON-AIR conditions to show the changing of the electromagnetic field coverage of the base station and also to verify the validity of measurement techique.

碩士
國立交通大學
管理學院碩士在職專班經營管理組
95
The Taiwan second generation (2G) mobile market had reached peak in 2003 with total subscribers 25.8 millions. It had moved into decline stage in 2004 and 2005. It is important for 2G operators to use low growth but high market penetration “Cash cow” (2G wireless system) to create competitive advantages for high growth, low market penetration 3G wireless system, and make it become a “Star” industry with high market penetration.This thesis will discuss the diffusion of 3G wireless services and the behavior of potential comsumers in Taiwan. First, the potential comsumers of 3G wireless services in Taiwan are defined as 2G and PHS mobile users. Second, we did market analysis on Taiwan,Europe mobile market and studied the theories of innovation adoption, diffusion, network effect, bandwagon processes, and consumer behavior. Finally, we used“Howard-Sheth buyer behavior model”to create a market research survey. In this survey, we used random digit dialing to collect data, then used Cross-table, Chi-squared test and Pearson methods to analyze data and investigate why a potential customer does not switch from 2G to 3G in Taiwan. Motives for 3G wireless services potential consumers to increase patronage intentions include (1) more reasonable price of mobile handset (2) lower monthly fee package (3) colleagues, relatives and friends have chose 3G wireless services. The most popular value-added services for those potential comsumers include (1)video phone (2)MP3 mobile music download (3)streaming and broadband mobile internet. Findings of this study may provide 3G operators with marketing advices.

碩士
國立臺灣科技大學
工業管理系
93
Taiwan telecom market was opened in 1997, and then the telecom market changed from monopoly to relatively open market. Only after five years, the cellular phone subscribers have an incredible growth. According to ITU (International Telecommunication Union) statistic report in 2002, ie The popularity rate of cellular phone in Taiwan was 111%, It’s the No. 1 in the world. And from another words, the cellular phone market was full over. But, the government still follow the globe trend of telecom industry, to sale the 3G license in 2002. There are total 5 licenses, and 3 of 5 are 2G operator, and the other two (APBW & Vibo) are new operators. For there two new operator, how to compete with the 2G operators ? The market strategy is very important in this moment. This paper will base on local environment to study the market of telecom industry especially telecom operator, certainly including the value chain vendors such as handset manufactures and content providers. The paper is not only study the telecom industry development and market current situations, but also use the SWOT analysis tool to draw up the market strategy. So that it can provide more efficient advice to the new operator.

碩士
南台科技大學
資訊傳播系
92
This study was an exploratory case study analyzing the competitive and mobile digital content of Taiwan’s mobile telecommunication industry. The five research objectives were: (1) the business competitive analysis; (2) the industry competitive analysis of the 3G mobile telecommunication industry; (3) analyze Taiwan’s competitive analysis among global 3G telecommunications; (4) the development of 3G’s mobile digital content provider; and (5) analyze consumer’s use of digital mobile content. The theoretical framework for competitive analysis was based on SWOT, Michael Porter’s five forces and diamond model. The results and case study data analysis were based on various evidences from in-depth interviews, document/secondary data analysis, and web survey. Results and suggestions found that (1) global challenges in introducing 3G; (2) challenges of attracting new 3G consumers in the initial stage of introduction; (3)consumer still played a vital role in the use and widespread of 3G mobile telecommunications; (4) easy user-friendly usage can help reduce consumer’s technological anxiety; (5) provide consumer with multiple functions and 3G killer’s applications; (6) the responsibility of educating consumers by service provider will help the development of mobile digital content; (7) successful marketing is crucial to the development and competitiveness of 3G telecommunications market. The exploratory case study provided suggestions for the industry and provided directions for future research.

碩士
南台科技大學
資訊傳播系
94
The new technical inventions often promote traditional saturated market bring back to life. According to the “How many” report (2005/7/11), the integrated Internet and the 3G service of the mobile telecommunication which is bringing dawn the reaching as high as the 2249 million phone users in Taiwan. Therefore in Japan, Han, Europe, America and so on the advanced countries, the 3G cell phones gradually become universal, Taiwan officially steps into the 3G telecommunication time in July, 2005. Industries believe use the integrated marketing communication(IMC) to establish the information bank, connect with correct goal consumers, integrate diverse different type mediums, transmit uniform news and so on in the competition intense telecommunication market. At the same time, the consumers not only compare to the price also compare to the service, therefore how establishes the good bidirectional communication channel and raise the deeply relations and so on, which will might be estimated to grasp certainly to the superiority, in this telecommunication marketing fighting. ChungHwa Telecom is the outstanding industry in the 3G marketing fighting, which carries the country and the privately operated superiority, since the 2G telecommunication, the 825 million users has been the Taiwan main item telecommunication industry. According to the “cell phone king” report(2005/9/26), ChungHwa Telecom the first begins the 3G services at the end of July, 2005, until September, the user numbers break through 8 ten thousand, equally every day increases 5,000 ~ 6,000 3G new users. Therefore this article uses the scholars who conform the integrated marketing communication which disseminates induction about all concepts, definitions, pattern charts, medium tools and so on referring to the Schultz, Tannenbaum and Lauterbom (1993) in Medill School unifies Moore and Thorson (1996) and G. E. Belch and M. A. Belch (1998) in San Diego University conform integrated marketing communication argument, and fuses Ozimek (1991) to the consumer information bank overhead construction elaboration. Taking a voluntarily induces take the consumer information bank as the integrated marketing communication dissemination foundation conformity marketing dissemination pattern chart for the research foundation. And according to the new things disseminates process, taking the early uses as this case study object, and take the new things to the consumer in the five characteristics "the relative advantage", "the compatibility", "the complexity", "the experiment" and "the observation", discriminating this consumers as "the young race group primarily", "society is not obvious after the status", "the contact media", "the consumers demand satisfies", "the new thing product guidance" and "the life condition" and so on the aspects carry on the correlation observation and the research. In addition this article according to studies the goal demand, after rests on correlation secondary material, separately with the ChungHwa Telecom sells the manager to carry on depth interview in Taichung and Kaohsiung , soon after carries the focal point association on the ChungHwa Telecom goal consumers, finally according to the above nature findings, conducts the universal consumers investigation and study, the main goal is: Wants to understand the industries aspects which present the conformity marketing applies to the 3G handset strategy, and expects to provide a set of new integrated marketing communication promotion pattern; in consumers aspects which hope to understand goal consumers’ demand and the correlation views, will supply the future solid service reference. The research discovers the result: The ChungHwa Telecom estimates the first wave promotes the consumers characteristic at first, formulates preliminary marketing goals, transmits the main news to the business place, unifies the region consumers information bank by each place, subdivides the goal consumers special characteristic once more, by the SWOT analysis and union many kinds of marketing actives, contains the region marketing and the whole staff marketing and so on, performs conformity each kind of mediums, establishes the relations with the consumers, and appears the obvious achievement to in the 3G users numbers growth rate. In the consumers aspects, we discover between the consumers and the mediums, indeed like the integrated marketing communication and the ChungHwa Telecom supposition says the situation distribution, but and "the event sells" and "the region marketing", the ChungHwa Telecom also has space of thinking, moreover in the consumers to the mediums contents aspects, the consumers explanation the medium content depth , does not see as if with the solid border purchase behavior is being connected, in the 3G consumers manners, we discover the consumers take city occupying rates, the handset price, the tariff is nothing more than unclear and so on, finally consumers memorize the ChungHwa Telecom brand impression, most mainly nothing more than contains the service attitudes, the tariff correlation strategies, contacts the frequency and the manner ways with the consumers and so on. In giving industry suggestion aspects, we discover the ChungHwa Telecom interior persons think the market the competition is intense has let the interior gradually present the old age staff to have aids has no time the predicament, also the multi- expectations enterprise can step much to the young trend, more precise acts bashful the consumers the demand, personally melts, multiply and so on unequal the marketing ways, assaults the younger race group market. Simultaneously suggested the ChungHwa Telecom can refer to the consumer true idea and the opinion much, although ChungHwa Telecom no matter in this 3G first wave promotion process, truly precise use union conformity marketing dissemination, but in fact both sides have the different existence in fact, speaking of the consumers, possibly also is a time coincidence and the human sentiment pressure, although such difference does not see affects the 3G service sale the result, but actually possibly creates Japan after image is SKYPE, 4G and so on the formidable competitors appear after the concealed worry, therefore suggested the ChungHwa Telecom may to its information bank in consumer opinion this sub-area, carry on the depth discussion and the understanding. Simultaneously this article also expected penetrates this research, may disseminate the theory union utilization using the conformity marketing which and innovate disseminates, will provide the future to study provides the trifle different views and the ideas, also for industry will provide the different marketing train of thinking spaces. And the expectation may provision industry to the integrated marketing communication values and the operation situations, as well as provision industries have to consumers’ demand further understood and the cognition, future also might the more effective use conformity marketing dissemination and the consumer information bank utilization, lets the consumers and the brand, the degree of satisfaction and the relations are closer.

Η διπλωματική εργασία υλοποιεί και προσομοιώνει αλγόριθμο για τη βέλτιστη διαχείριση φορητών συσκευών σε ετερογενή ασύρματα δίκτυα. Στο πρώτο κεφάλαιο γίνεται μια εισαγωγή στις γενικές αρχές των Κυτταρικών Συστημάτων Κινητών Επικοινωνιών παρουσιάζοντας την βασική ιδέα των διαφόρων γενιών κινητών επικοινωνιών. Στο δεύτερο κεφάλαιο αναλύονται τα συστήματα τρίτης γενιάς – 3G. Στο τρίτο κεφάλαιο αναφέρονται τα τεχνικά χαρακτηριστικά, τα πλεονεκτήματα και οι σχέσεις της πλατφόρμας TETRA. Στο τέταρτο κεφάλαιο περιγράφεται το σύστημα και οι λειτουργίες του TETRAPOL καθώς και τα πλεονεκτήματα και οι υπηρεσίες που προσφέρει αυτό. Στο 5ο κεφάλαιο αναλύονται τα συστατικά οι υπηρεσίες και οι λειτουργίες του iDen. Στο κεφάλαιο 6 γίνεται μια αναφορά στο πρωτόκολλο WiMax. Στα κεφάλαια 7 & 8 παρουσιάζονται ο αλγόριθμος της διαχείρισης συσκευών και η εξομοίωσή του σε MATLAB.
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碩士
大華科技大學
機電研究所
101
Water is one of the most important resources in the world; however, water pollution is increasingly serious and damages the balance of the food chain. The ever-changing technology of nowadays not only makes life infinite convenience, but also industrial wastewater pollution. In general, the concentration area of the wastewater discharge locates in sparsely populated place. To set up the analytical instruments in this kind of area, it is impossible to transfer the analytical data back to the Environmental Protection Center. This study focuses on using the PLC of industrial communication protocol Modbus PLC as a data collector. The role of the on-site water quality analyzer is data simulator and the data collector receives data from the simulator. Furthermore, using the cellular network technology of the current 3G mobile communications technology transfers the collected data back to the environmental Protection Center. To set up the analyzer of the water quality in the waste water quality concentration area, samples are collected in 24-hour timer mode, and collect and return, is a fail-safe monitoring. Meanwhile, this can not only enhance the credibility of industrial wastewater analysis and efficiency, but also reduce the problem of industrial waste water pollution by giving the result of the reaction to the environmental protection agencies immediately. On the other hand, we can also ask the factory to improve the issue of industrial wastewater pollution over the limit or even do the evaluation of the possibility for reclamation and recycling.