gsm global system for mobile communication powerpoint

... GSM – GLOBAL SYSTEM FOR MOBILE COMMUNICATION Kiến trúc hệ thống giao thức Nhóm sinh viên: Trần Xuân Bách Nguyễn Tiến Đạt Đỗ Trung Đức Các bước phát triển GSM Các bước phát triển GSM Kiến ... ? ?Mobile Station (MS) ? ?Mobile Equipment (ME) Subscriber Identity Module (SIM) Base Station Subsystem (BBS) Base Transceiver Station (BTS) Base Station Controller (BSC) Network Subsystem ? ?Mobile ... Module) Hệ thống GSM sử dụng khoá nhận dạng thuê bao cất nhớ nhỏ gọn gọi SIM-CARD Được cắm vào máy di động để thông tin trực tiếp với VLR gián tiếp với HLR Base Station Subsystem (BSS) Trạm

Ngày tải lên: 24/06/2022, 08:30

... Networks Lecture 16 GSM: Global System for Mobile Communication Dr Ghalib A Shah Outlines         Review of Last Lecture GSM Introduction GSM System Architecture GSM Network Areas Specifications ... possible  The GSM network is divided into three major systems: ► switching system (SS) • is responsible for performing call processing and subscriberrelated functions ► base station system (BSS), ...  The GSM operator is responsible for provisioning this data in the HLR The MSC and GMSC in a PLMN, on the other hand, are not specific for one subscriber group 18 19 Mobile Station  Mobile

Ngày tải lên: 05/07/2022, 13:09

... 1 Global System for Mobiles GSM 2 TOPICS • GSM CONCEPTS • GSM SYSTEM ARCHITECTURE • IDENTITIES USED IN GSM • GSM CHANNELS • GSM RADIO LINK • MOBILITY MANAGEMENT ... 374 299 GSM systems Uplink Downlink GSM 450 GSM 480 450.4-457.6 478.8-486 GSM 900 E -GSM (900) R -GSM (900) GSM 1800 GSM 1900 GSM 850 824-849... Frequency Channel Number GSM Family ... 457.6 478.8 GSM 450 Downlink 460.4 824 GSM 480 467.6 488.8 849 GSM 850 496 869 894 MHz 915 Uplink 876 880 486 915 890 915 1710 1785 1850 1910 P -GSM E -GSM GSM 1800 GSM 1900 R -GSM 921

Ngày tải lên: 19/10/2013, 15:15

... PSNR of crowd sequence for the first 120 frames This paper discussed the use of DVB-T2 system as a bearer for mobile data using H.264/SVC Three important challenges for mobile transmission: power ... quality encodings by splitting or refining the transform coefficients For detailed information about architecture, system, and transport interface for SVC, the reader is referred to the Special Issue ... provides a good baseline for the future development of a new mobile broadcast system The new system would be able to reuse the infrastructure and components that would be available for DVB-T2 At the

Ngày tải lên: 26/03/2020, 03:16

... throughput of Mobile Switching Center (MSC) in Global System for Mobile Communications (GSM) network The book begins by building the core knowledge of Global System for Mobile Communications ... Algorithm for Mobile Communication Networks Sliding Window Algorithm for Mobile Communication Networks Nuka Mallikharjuna Rao Mannava Muniratnam Naidu Sliding Window Algorithm for Mobile Communication ... in performance metrics of the proposed integrated model (IM) and IMMC for one v vi Preface MSC service area Obviously, it is recommended to consider adopting IM and IMMC for the entire GSM network

Ngày tải lên: 15/09/2020, 11:42

... the aforesaid mobile communication generations in detail and describe the services and applications suitable for mobile communication systems 2 EVOLUTION OF MOBILE COMMUNICATION SYSTEMS ... trial for 2006 Main competitor of DMB system in mobile TV field is the DVB-H system DVB-H is a technical specification for bringing broadcast services to handheld receivers OVERVIEW OF MOBILE ... cost deployment make WiBro /Mobile WiMAX a leading solution for wireless broadband services... GSM cell phone system and the TETRA professional mobile radio system Owing to the technical

Ngày tải lên: 27/06/2014, 09:20

... the aforesaid mobile communication generations in detail and describe the services and applications suitable for mobile communication systems 2 EVOLUTION OF MOBILE COMMUNICATION SYSTEMS ... generation (2G) mobile phone system This first version GSM, now called global system for mobile communication, works at 900 MHz and uses 124 full-duplex channels GSM. .. Digital European ... OVERVIEW OF MOBILE COMMUNICATION 7 international collaboration of a number of telecommunications standards bodies to standardize UMTS (Universal Mobile Telecommunications System) The original

Ngày tải lên: 07/08/2014, 21:20

... services, it may be necessary for IMT-Advanced to have different radio interfaces and frequency bands for mobile access for highly mobile users and for new nomadic/local area wireless ... MOBILE COMMUNICATION 29 expected that in areas where HSDPA becomes widely available, like Western Europe, and where well-suited spectrum for 802.16e is rare, the window of oppor- tunity for mobile ... launch T-DMB for the world cup 2006 • France currently makes a trial in Paris • Switzerland and Italy prepare a trial for 2006 • UK launch a trial for 2006 Main competitor of DMB system in mobile TV

Ngày tải lên: 07/08/2014, 21:20

... demanded for the beyond 3rd generation (3G) wireless mobile communications systems Wireless channels for such high-speed... D.P., Zeng Q., 20 03, Introduction to Wireless and Mobile Systems, ... Radio for Mobile Communications, Artech House, London 7 Holma H., Toskala A., 2004, WCDMA for UMTS, 3rd ed., Wiley, Cornwall 8 Korhonen J., 20 03, Introduction to 3G Mobile Communications, ... Nowadays, the most prominent CDMA applications are mobile communication systems like IS-95, cdma2000 or WCDMA. To apply CDMA in a mobile communications systems there are specific additional methods

Ngày tải lên: 07/08/2014, 21:20

... wk = ⎧ ⎪ ⎪ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎪ ⎪ ⎩ H ∗ k for MRC H ∗ k   Hk  2 for ZF H ∗ k   Hk  for EGC H ∗ k   Hk  2 +  C SF E s N 0  −1  for MMSE where E s /N 0 (=E c SF/N 0  is ... Similar to ISI cancellation for MC-CDMA, ICI cancellation for SC-CDMA can be carried out either in the time-domain or in the frequency-domain after performing MMSE-FDE. For the frequency-domain ... SF = 16 For block spread SC-CDMA, SFu SFu = U 16/U is assumed for all users When the system is lightly loaded (i.e., U = 8), conventional SC-CDMA using MUD exhibits better BER performance...

Ngày tải lên: 07/08/2014, 21:20

... by 3GPP allows for mobile- communication systems to provide packet-data services with a performance far exceeding what can be provided with mobile- communication systems based on earlier, ... Access Technologies for Next Generation Mobile Communication, 191–216 © 20 07 Springer 192 CHAPTER 6 The introduction... for the transmission of digital control information from a base ... more mobile stations Forward Dedicated Control Channel A portion of a Radio Configuration 3 through 9 Forward Traffic Channel used for the transmission of higher-level data, control information,

Ngày tải lên: 07/08/2014, 21:20

... from a transmit-power point-of-view. In point-to-point communications, for example for HS-DSCH and E-DCH, some form of ARQ mechanism is therefore typically used to reduce the residual error rate ... commonality... procedures for mobile- terminal measurements, e.g., for cell reselection in case of MBMS reception For HSDPA, the scheduler can avoid scheduling data to a given mobile terminal ... frequently for the uplink compared to the downlink. This further reduces the probability for the uplink to be bandwidth limited rather than power limited. For these reasons and in order to reduce the mobile- terminal

Ngày tải lên: 07/08/2014, 21:20

... Cat 1 for UE 1 Cat 1 for UE 2 Cat 1 for UE 3 Figure 13 Channel coding scheme for L1/L2 control information Cat 2/3 for UE 1 Cat 2/3 for UE 2 Cat 2/3 for UE 3 240 CHAPTER 7 information ... and 2/3 for multiple sets of UE Cat 1 for multiple sets of UE Cat 2/3 for UE 1 Cat 2/3 for UE 2 Cat 2/3 for UE 3 Cat 1 and 2/3 for UE 1 Cat 1 and 2/3 for UE 2 Cat 1 and 2/3 for UE ... Uplink scheduling information for the downlink shared data channel • UE identity and RB assignment information: Similar to downlink-related information – Control information for demodulation of

Ngày tải lên: 07/08/2014, 21:20

... Digital communication systems Fig 2.1 Basic elements of a digital communication system Generally, any communication system has three blocks which are transmitter, receiver and communication ... characteristics and communication system performance should be modeled such as path loss SNR and BER against communication distance Since IBC transmitter has been employed in our system, the IBC ... OFDM system, ” Wireless personal communications, vol 54, pp 39-52, 2010 [54] Z Xu and Y Li “Energy-constrained duty-cycle optimization for wireless implanted communication devices,” E-Health Telecommunication

Ngày tải lên: 28/11/2015, 14:02

... Press one for English or Press two for Amharic Press three for Introduction to the BCC.IVR system Please choose a topic Press one for First Aid Press two for Reproductive Care Press three for Nutrition ... Diagram for the BCC-IVR system 45 Figure 4: Class Diagram for the BCC-IVR system 57 Figure 5: Activity Diagram for Listening BCC message 58 Figure 6: Activity Diagram for ... one for “First Prenatal Visit” Press two for “Each Subsequent Prenatal Visit” Press three for “Testing recommended for all pregnant women” Press four for “Education and counseling” Press five for

Ngày tải lên: 14/08/2017, 16:46

... settings and system configurations System administrator Interface and different components of the system Fig presents interface and system components for the mobile client application for users ... following building blocks: i Mobile application interface: The front-end part is the mobile application running on Android mobile operating systems deployed on the user’s mobile 454 ii iii iv v M ... Content Delivery System (Mobile- LCDS) is installed in users’ access devices; it will provide the mobile user with a user interface to interact with the system, and a persistent storage for the temporary

Ngày tải lên: 10/01/2020, 10:34

... Science & Communication Networks,Vol 3(6),347-357 Simplified TCP Based Communication Approach towards Domain Name System for Improving Security Alok Pandey1 , Dr Jatinderkumar R Saini2 Sr Systems ... to a halt since the Internet users and systems would not be able to use human-friendly names for communication and would be forced to use IP addresses for everything Any accidental or intentional ... hidden channel for communications [16] Several cases have been documented in which DNS has been used as the mechanism for communications between botnet command and control servers of the systems that

Ngày tải lên: 30/01/2020, 10:45

... Reichenbacher Adaptive methods for mobile cartography ICC 2003, (August):10–16, 2003 K Al-Mekhlafi, X Hu, and Z Zheng An approach to context-aware mobile chinese language learning for foreign students In ... QUỐC GIA HÀ NỘI TRƯỜNG ĐẠI HỌC CÔNG NGHỆ PHẠM VĂN CÔNG LEANER OPEN MODELING IN ADAPTIVE MOBILE LEARNING SYSTEM FOR SUPPORTING STUDENT TO LEARN Ngành: Công nghệ thông tin Chuyên ngành: Khoa học máy ... NỘI - 2015 LỜI CAM ĐOAN Tôi xin cam đoan: Luận văn “Leaner open modeling in adaptive mobile learning system for supporting student to learn” kết nghiên cứu riêng với hướng dẫn TS.Trần Trúc Mai

Ngày tải lên: 07/03/2020, 18:39

... bandwidth and storage requirement. B. System performance vs. network resource We next evaluate the performance of our system. One major metric of the performance of our system is the message success rate, ... Sprite, a simple, cheat-proof, credit- based system for stimulating cooperation among selfish nodes in mobile ad hoc networks. Our system provides incentive for mobile nodes to cooperate and report actions ... discussed in Sec- tion III, although our system provides incentive for cooperation by giving more credit for forwarding a message, whether or not to forward a specific message will depend on the...

Ngày tải lên: 15/03/2014, 04:20

... cellular mobile, but also cordless, public mobile radio, satellite and wireless-local area network (W- LAN) solutions. 2G systems are synonymous with the globalisation of mobile systems, and in Mobile ... the 51-frame formats are combined to form a GSM superframe, and the TDMA hierarchy is complete when 2048 superframes are combined to form a hyperframe [WAL-99]. Mobile Satellite Communication ... of 3GPP. 3GPP was formed in 1998 with the aim of providing globally applicable technical speci- fications for a 3G mobile system. These specifications are based on an evolved GSM CN and the UTRA...

Ngày tải lên: 14/09/2012, 11:26