mobile satellite system services

... packet-oriented services, providing the first opportunity to introduce mobile- multimedia services Within the next few years, it is expected that mobile users will wish to access broadband multimedia services, ... access to broadband services and applications These types of services are beyond the capability of present 2G systems, which offer voice and low data rate services The convergence of mobile and Internet ... development of 3G systems The 3G mobile communications systems will be capable of delivering services and applications at data rates of up to and beyond Mbit/s The standardisation of 3G systems comes...

Ngày tải lên: 14/09/2012, 11:26

... in mobile- satellite technology over the last 20 years, from the initial maritime services to the planned satelliteuniversal mobile telecommunications system (S-UMTS) systems 2.2 Geostationary Satellite ... global mobile system for over 20 years using a configuration of geostationary satellites When geostationary satellites were first employed for mobile- satellite services, limitations in satellite ... 2.4b Comparison of satellite orbits: implementation considerations 54 Mobile Satellite Communication Networks Mobile Satellite Systems Figure 2.4 55 Minimum three geostationary satellite configuration...

Ngày tải lên: 14/09/2012, 11:26

... Network Satellite- PCS Satellite- RACH Satellite- SACCH Satellite- SCH Satellite- SDCCH Satellite- TCH Eighth-rate Satellite- TCH Full-rate Satellite- TCH Half-rate Satellite- TCH Quarter-rate Satellite- UMTS ... PC Mobile Satellite Communication Networks Mobile IP Version Mobility Management Mobile Network Code Memorandum of Understanding Mobile Station Multi-Transport Satellite Based Augmentation System ... Synchronous-CDMA Satellite- FACCH Slow FH Satellite- High Margin BCCH Satellite- High Margin SCH Satellite- High Penetration Alerting Channel Satellite- IMT-2000 Satellite- PCH/Robust Satellite- Personal...

Ngày tải lên: 14/09/2012, 11:26

... File system cấn mount Mount point Type Mount options Dump Pass frequency number - Bạn sửa file /etc/fstab để mount/umount lênh vi : vi /etc/fstab 7/ Định dạng filesystem: - Kiểm tra file system ... filesystem: - Kiểm tra file system mounted hệ thống: df -lT - Định dạng kiểu file system /dev/sda4 sang ext3: o Umount file system /dev/sda4: umount /dev/sda4 o Thực lệnh : mkfs –t ext3 /dev/sda4 Biên ... 38244041 – 0989012418 www.athena.edu.vn o Mount lại file system /dev/sda4: mount /dev/sda4 /data o Kiểm tra: df –lT 8/ Chuẩn đoán sửa lỗi file system: - Thực lệnh: fsck –a /dev/sda4 (option –a: tự...

Ngày tải lên: 29/09/2013, 20:20

... Introduction to System Services The purpose of this section is to introduce students to the system services layer The system services layer works with parts of the application that provide system service ... The system services layer works with parts of the application that provide system service or system infrastructure functionality Typically, any layer within the architecture can use the system services ... 11: System Services ! Lab 11: System Services Preparation Tasks To prepare for this module, you should: ! Read all of the materials for this module ! Complete the lab iv Module 11: System Services...

Ngày tải lên: 11/12/2013, 14:15

... co-ordinate system The rotating Earth system with respect to the fixed Earth system [PRI-93] Celestial sphere co-ordinate system Satellite location in satellite- centred spherical co-ordinates Satellite ... of mobile- satellite communications from the established geostationary systems to the latest ‘‘little’’ and ‘‘big’’ low Earth orbit systems The introduction of non-geostationary satellite systems ... 41 Mobile Satellite Systems 2.1 Introduction 2.1.1 Current Status 2.1.2 Network Architecture 2.1.3 Operational Frequency 2.1.4 Logical Channels 2.1.5 Orbital Types 2.2 Geostationary Satellite Systems...

Ngày tải lên: 12/12/2013, 11:16

... 66 Activity 9.2: Identifying System Services Exercise 1: Identifying a Set of System Services for a Scenario (10 minutes) ! Identify required system services Participate in small groups ... Participate in small groups as assigned by the instructor Read each scenario below Identify what system services best meet the needs of the scenario Write your answers below After completing the above ... company needs to promote inter-company communication now Solution A B Activity 9.2: Identifying System Services 67 Exercise 2: Analyzing Technology Selection (5 minutes) ! Analyze technology selection...

Ngày tải lên: 21/12/2013, 06:16

... Introduction to System Services The purpose of this section is to introduce students to the system services layer The system services layer works with parts of the application that provide system service ... The system services layer works with parts of the application that provide system service or system infrastructure functionality Typically, any layer within the architecture can use the system services ... 11: System Services ! Lab 11: System Services Preparation Tasks To prepare for this module, you should: ! Read all of the materials for this module ! Complete the lab iv Module 11: System Services...

Ngày tải lên: 24/01/2014, 10:20

... Satellite System Fyfe, Horace Brown Published: 1960 Categorie(s): Fiction, Science Fiction, Short Stories ... reliable contacts and a good knowledge of the needs of the three planets and four satellites colonized in the Centaurian system Only three days earlier, Tremont had returned from his most recent trip ... he pointed out gently "How can I trust you… ?" He was hardly a million miles out from the satellite system of Centauri VI when the Space Patrol ship he had called managed to put a pilot aboard...

Ngày tải lên: 06/03/2014, 17:20

... geographic information system Russian global navigation satellite system global navigation satellite system Global Positioning System Global System for Mobile communications International Civil Aviation ... interoperable (satellite navigation systems are architecturally equivalent, and a single common receiver can use multiple satellite navigation systems) to compatible (satellite navigation systems differ ... of Global Navigation Satellite System 13 System Segments 13 Space Segment 13 Ground (Control) Segment 16 User Segment 17 Augmentations 17 System Services 18 v vi...

Ngày tải lên: 29/03/2014, 20:20

... users who access these types of services through mobile connections is growing significantly The quality of experience (QoE) as expressed by end users for these services is of paramount importance ... User experimentation for mobile context of use This paper illustrates a series of experiments aimed at analyzing the QoE for different media-enriched webbased services in a mobile context An extensive ... sequences extracted from considered online services Video lengths were inferred from the analysis of different online sources, namely BBC news mobile, YouTube Mobile and Facebook The duration of clips...

Ngày tải lên: 20/06/2014, 21:20

... concepts of mobile satellite communication systems and the required security properties to efficiently establish a secure mobile satellite communication link [1,12-16] Page of 10 2.1 Mobile satellite ... via the satellite communication model to provide diversified communication services, thus forming the so-called mobile satellite communication system (MSCS for short) For example, if a mobile ... generation satellite networks EURASIP J Wirel Commun Netw, 1–9 (2007) Article ID 58484 12 HS Cruickshank, A security system for satellite networks in Proceedings of the IEEE Satellite Systems for Mobile...

Ngày tải lên: 21/06/2014, 00:20

... users who access these types of services through mobile connections is growing significantly The quality of experience (QoE) as expressed by end users for these services is of paramount importance ... User experimentation for mobile context of use This paper illustrates a series of experiments aimed at analyzing the QoE for different media-enriched webbased services in a mobile context An extensive ... sequences extracted from considered online services Video lengths were inferred from the analysis of different online sources, namely BBC news mobile, YouTube Mobile and Facebook The duration of clips...

Ngày tải lên: 21/06/2014, 17:20

... 16: air Interface for fixed and mobile broadband wireless access systems,” Tech Rep., IEEE, 2006 [3] Y Li and N R Sollenberger, “Adaptive antenna arrays for OFDM systems with cochannel interference,” ... conclusions SYSTEM MODEL Since only a single receive antenna is available, the class of interference cancellation algorithms exploiting receive diversity is excluded here In the considered scenario a mobile ... on MIMO OFDM systems,” IEEE Wireless Communications, vol 9, no 6, pp 8–17, 2002 [7] J Li, K B Letaief, and Z Cao, “Co-channel interference cancellation for space-time coded OFDM systems,” IEEE...

Ngày tải lên: 22/06/2014, 06:20

... search system System for elderly Remote medical care system Mobile multimedia network Data center database Private domain Emergency communications system e-commerce Music on demand Remote medical Mobile ... multimedia services Other potential services include the adoption of mobile systems as part of Intelligent Transport Systems (ITS), the use of i-mode for safe driving, car-navigation systems based ... the provision of cheaper and more efficient services In Japan, a digital mobile phone system referred to as the second-generation mobile communications system and built in compliance with Japan’s...

Ngày tải lên: 24/08/2014, 17:56

... designing such an integrated system: one is to modify the existing GSM infrastructure to suit the peculiarity of the satellite system; or to adapt the satellite system to existing GSM networks ... Integrated Terrestrial -Satellite Mobile Networks 263 Figure 7.11 Signalling flow for a GSM cell to a satellite spot-beam handover for integration at the E-interface [CEC-95] Mobile Satellite Communication ... universal mobile telecommunications system (UMTS) is the 3G mobile system for Europe and will deliver a convergent network incorporating cellular, cordless, wireless local loop and satellite...

Ngày tải lên: 14/09/2012, 11:26

... History and Development of Mobile Network Services in Vietnam ………………………………………………… The Origin of Mobile Network……………………………… The Development of Mobile Network services …………… 3 Mobile Network Business ... DISCUSSIONS……… 9 Advantages of Using Mobile Network Services …………… Disadvantages and Solutions of Using Mobile Network Services 10 Future Trends of Mobile Network Services ………………… 11 CHAPTER V CONCLUSION………………………… ... Development of Mobile Network Services in Vietnam The Origin of Mobile Network The mobile is a progressive inventor of human which marks an obvious advance in human civilization The history of mobile...

Ngày tải lên: 22/04/2013, 15:35

... using using using System; System. Web; System. Web .Services; System. Web .Services. Protocols; 8547ch06final.qxd 8/30/07 3:50 PM Page 231 CHAPTER s REPORTING WITH WEB SERVICES AND MOBILE DEVICES [WebService(Namespace ... Service.cs file: using using using using using using using System; System. Web; System. Web .Services; System. Web .Services. Protocols; System. Data; System. Data.SqlClient; Microsoft.Reporting.WebForms; ... using using using using using using System; System. Collections.Generic; System. ComponentModel; System. Data; System. Drawing; System. Text; System. Windows.Forms; System. IO; namespace WinFormClient...

Ngày tải lên: 05/10/2013, 08:48

... powered and would include a small, efficient IP satellite connection to provide the island with Internet and voice services Results • Mobile telephone services available for the first time in the ... investment and realize greater revenues • Mobile network which minimizes the use of expensive satellite backhaul • Plans for expansion to provide mobile and wireless services to FSM’s outer islands that ... extreme climate conditions In addition, satellite backhaul is optimized and implemented cost-effectively due to the advanced compression technology in the ADC system Because ADC’s cellular networks...

Ngày tải lên: 21/12/2013, 07:17

... availability A system of vertical cable managers with integrated slack managers not only offers proper management of cables, but also provides increased bay density as compared to systems using ... electrical, and power supply cables to ensure system reliability Distributed power architecture is also preferred for improved performance, reliability, and system availability Built-in intelligence ... improved system reliability and availability by reducing the chance for damage to adjacent fibers during routine maintenance of individual fibers Conclusion Earning customers for value-added data services...

Ngày tải lên: 22/12/2013, 12:15