global system for mobile communicationpowerpoint presentation

... Network OMC AUC HLR MSC EIRVLR BSC BTS MS External PSTN & PDN N/W SS BSS Switching System Base Station System MS Mobile Station BTS Base transceiver System BSC Base Station Controller MSC Mobile Switching Center HLR Home Location ... messages ã International Mobile Equipment Identifier (IMEI) 38 GSM Architecture HLR VLR EIR AUC MSC B S C B S C SMSC PSTN VMSC Mobile Station GSM Air interface OMCR TRAU Base Station System Network and ... Circuit Switched Data EDGE = Enhanced Data rate for GSM Evolution UMTS = Universal Mobile Telecommunication System 10 sec 1 min 10 min 1 hour0 UMTS E/GPRS ISDN PSTN GSM webe-mail photo web photo e-mail web...

Ngày tải lên: 19/10/2013, 15:15

... 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

... Cabling System Integration Services Agenda 1. Intelligent Building Overview 2. IBMS & Network 3. NEXT GENERATION Structured Cabling System 4. ADC KRONE TrueNet đ Solution Building for Bandwidth ã ... Intelligent Building Management System allows Real-time management of the Building environment from single point. Services include: 1. Voice & Sound (PABX, Public Address System ) 2. Data (LAN, SAN, ... Building Management System An Intelligent Building has thousands of pieces of data available. Tools will be needed to evaluate, and prioritize, presenting only the required information to the...

Ngày tải lên: 16/01/2014, 21:20

... personal health information system and the medical guidance. 1) Personal health information system: The personal health system can store physiological data and other information in the database ... Our system is also a mobile health system for the elderly with tailored services depending on their personal health condition. However, it is not only a remote and real-time monitoring system ... platform and medical knowledge database. Therefore, the main functions of our system are described below. ã A real-time mobile health monitoring system for the elderly to monitor the health condition...

Ngày tải lên: 28/03/2014, 19:21

... increasingly large, amount of force for most tasks. The difficulty of current tasks was mostly proportional to torque or force to be exerted for manipulation. Although strength is beneficial for stroke recovery ... participant’s performance following the initial increase in pe rformance, as performance stayed within 33% of the challenge performance, on average. Such deviation from the challenge performance can ... participants’ performance near a challenging performance point. Figure 4 shows examples of performance and adaptive difficulty in the training session for one participant (FM score: 45) for doorknob turning,...

Ngày tải lên: 19/06/2014, 08:20

... constants for the elastic and thermal material properties. From this seemingly complicated system, very interesting special cases can be obtained. In particular, the isothermal system is exactly the system ... exponential stability for the Timoshenko system, but when the wave speeds are different, the Timoshenko system loses the exponential stability. This phenomenon has been observed for partially damped ... conditions for exponential stability of linear dynamical systems in Hilbert spaces,” Annals of Differential Equations, vol. 1, no. 1, pp. 43–56, 1985. 19 S. Borini and V. Pata, “Uniform attractors for...

Ngày tải lên: 21/06/2014, 11:20

Ngày tải lên: 08/08/2012, 14:19

... McKusick, M., "Performance Effects of Disk Subsystem Choices for VAX Systems Running 4.2BSD UNIX", Computer Systems Research Group, SMM:05-12 A Fast File System for UNIX administration ... byte block UNIX file system. The new file system uses less space than the 512 byte or 1024 byte file systems for indexing information for large files and the same amount of space for small files. These ... [Operating Systems]: Performance − measurements, operational analysis; H.3.2 [Information Systems]: Information Storage − file organization Additional Keywords and Phrases: UNIX, file system organization,...

Ngày tải lên: 12/09/2012, 14:16

... 13 Web-based Geographic Information System 13 3.1. Geographic Information System overview 13 3.1.1. Definition 13 3.1.2. Data representation in GIS system 13 3.1.3. Other terms in GIS system 15 3.1.3. ... permission. 4.3. System architecture GreenPeace applied the three-tier architecture for dynamic web based system. It combines rich client design and web-based GIS system at presentation tier, ... of Java Platform that runs on the web-based. Java binary codes may be downloaded to browser before processing. - Microsoft Silverlight: The newest web platform from Microsoft to perform logic...

Ngày tải lên: 27/10/2012, 16:40

... Cellular Systems 25 2.2.2 Digital Second Generation Systems 25 2.3 First 3G Systems 27 2.3.1 Requirements for 3G 27 2.3.2 Evolution of 2G Systems towards 3G 29 2.3.3 Worldwide 3G Standardisation Efforts ... Models for the Physical Layer and for User Traffic Generation 221 5.1 How to Account for the Physical Layer? 221 5.1.1 What to Account For and How? 221 5.1.2 Using Approximations for Error Performance ... which are discussed extensively in Chapter 4. For one 2G system called cdmaOne and most 3G systems, e.g. the Universal Mobile Telecommunications System (UMTS), DS/CDMA was chosen as a basic multiple...

Ngày tải lên: 02/03/2013, 16:59

Ngày tải lên: 05/09/2013, 08:40

Ngày tải lên: 05/09/2013, 09:08

Ngày tải lên: 05/09/2013, 14:58

... paths for them are handled by the SGSN. 1.2.3 IP for 3G What is meant by IP for 3G? 3G systems will include IP multimedia allowing the user to browse the Internet, send e-mails, and so forth. ... being captured for malicious use and impersonation of users. One, final, level of security is performed on the mobile equipment itself, as opposed to the mobile subscriber (for example, putting ... short for Third Generation (Mobile System) . Here is a quick run-down: ã 1G, or first generation systems, were analogue and offered only a voice service - each country used a different system, ...

Ngày tải lên: 27/10/2013, 17:15

... replacement a breeze! DIY CO2 System for Planted Aquarium 5 de 25 25/7/2005 15:44 system. In pressurized tank systems, there is generally no liquids, or solids for that matter, to foul or ... together. DIY CO2 System for Planted Aquarium 19 de 25 25/7/2005 15:44 Using any or both of these saftey systems insures improved performance and reliability of your overall system. These ... of such designs and systems, and are to be used at the readers own risk. Also the authors recommendation of specific products does imply or express any formal DIY CO2 System for Planted Aquarium 15...

Ngày tải lên: 08/11/2013, 01:15

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Ngày tải lên: 07/12/2013, 11:41

Ngày tải lên: 07/12/2013, 11:41

Ngày tải lên: 07/12/2013, 11:41