global system for mobile communicationpowerpoint presentation
GSM Global System for Mobiles
Ngày tải lên :
19/10/2013, 15:15
... 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...
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Sprite: A Simple, Cheat-Proof, Credit-Based System for Mobile Ad-Hoc Networks potx
Ngày tải lên :
15/03/2014, 04:20
... 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...
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Tài liệu Presentation - Tek Trend - IBMS & Structured Cabling System for Intelligent Bldg doc
Ngày tải lên :
16/01/2014, 21:20
...
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...
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iCare: A Mobile Health Monitoring System for the Elderly pptx
Ngày tải lên :
28/03/2014, 19:21
... 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...
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Báo cáo hóa học: " Feasibility of the adaptive and automatic presentation of tasks (ADAPT) system for rehabilitation of upper extremity function poststroke" pptx
Ngày tải lên :
19/06/2014, 08:20
... 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,...
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báo cáo hóa học:" Research Article Exponential Stability and Global Attractors for a Thermoelastic Bresse System" pdf
Ngày tải lên :
21/06/2014, 11:20
... 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...
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A Fast File System for UNIX
Ngày tải lên :
12/09/2012, 14:16
... 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,...
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A web-based system for notifying environment violation.doc
Ngày tải lên :
27/10/2012, 16:40
... 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...
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Multiple Access Protocols for Mobile Communications - GPRS, UMTS and Beyond
Ngày tải lên :
02/03/2013, 16:59
... 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...
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IP for 3G - Networking Technologies for Mobile Communications
Ngày tải lên :
27/10/2013, 17:15
... 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, ...
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DIY CO2 System for Planted Aquarium
Ngày tải lên :
08/11/2013, 01:15
... 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...
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