ppt on reliance communication
Published on: Mar 4, 2016
Transcripts - Priaynshu sharma
POWER POINT PRESENTATION
RELIANCE COMMUNICATIONS LTD
MCN, VKIA, JAIPUR
Submitted to : Submitted By :
Mr. Alok Kumar Priyanshu Sharma
Ms. Suman Godara (PGI/EC/12/072)
PTS Co-ordinator (ECE-B) ECE-B
FOUNDER OF RELIANCE COMMUNICATION
Reliance Communications Limited founded by the late Shri. Dhirubhai H
Ambani (1932-2002) is the flagship company of the Reliance Anil Dhirubhai
Ambani Group. Shri Anil D. Ambani – Chairman.
1. Company Profile
2. Departments Overview
3. Media Overview
4. Wireless Communication
5. GSM Technology
6. CDMA Technology
7. Internet Generation
9. Thank you
10.Questions & Answers
PRESENTATION OUTLINESPRESENTATION OUTLINES
Type : Public (BSE: RCOM)
Founded : 2004
Headquarters : Navi Mumbai, India
Key people : Anil Ambani,
Chairman and Managing Director
Industry : Telecommunications
Products : CDMA service, GSM service, Broadband Internet Service
Revenue : US$ 4 Billion
Employees : 33,000
Website : www.rcom.com
OFC MUX MICROWAVE SATELLITE
No physical connectivity is required.
communication is done through Radio Links (E.M Waves)
and repeaters (CELL SITES) are placed in between per
entities for efficient communication.
2 TYPES OF WIRELESS TECHNOLOGY
Global System for Mobile Communication
Global System for Mobile (GSM) is a second generation
cellular standard developed to cater voice services and data
delivery using digital modulation.
Mobile to BTS (uplink): 890-915 MHz
BTS to Mobile(downlink): 935-960 MHz
Bandwidth : 2* 25 MHz
Mobile to BTS (uplink): 1710-1785 MHz
BTS to Mobile(downlink): 1805-1880 MHz
Bandwidth : 2* 75 MHz
MOBILE STATION (MS)
The Mobile Station consists of the Mobile Equipment (ME) and
the Subscriber Identity Module (SIM).
•Portable hand held device
•Uniquely identified by an IMEI Voice and data transmission
•Monitoring power and signal quality of surrounding cells for optimum handover.
Subscriber Identity Module (SIM)
•Smart card contains IMSI
•Allows user to send and receive calls.
•Encoded network identification detail Key Ki,Kc and A3,A5 and A8 algorithms
•Protected by a password or PIN
•Can be moved from phone to phone
BASE STATION SUB-SYSTEM ( BSS ) :
All radio related functions are performed in the BSS.
Consists of Base station Controller(BSC) and Base
BSC – Cotrol functions and physical links between the
mobiles and BS.
BS – Handles the radio interface to the mobile station.
BASE TRANSCEIVER STATION (BTS)
Maintains air interface and minimize transmission problems.
Radio level power control.
BASE STATION CONTROLLER (BSC)
It is connected to MSC.
Controls one or more BTS.
Switches traffic and signaling
to/from BTSs and MSC.
Connects terrestrial circuits and
channels on air interface.
Controls handover performed by BTS.
Frequency allocation and power control.
MAIN SWITCHING CENTER
Heart of the Network
between GSM and other networks
Billing information and collection
Inter BSS and inter MSC call handoff
HOME LOCATION REGISTERS (HLR)
-permanent database about mobile subscribers in a large service
area (generally one per GSM network operator)
-database contains IMSI,MSISDN, prepaid/postpaid, roaming
restrictions, supplementary services.
VISITOR LOCATION REGISTERS (VLR)
-Temporary database which updates whenever new MS enters its
area, by HLR database
-Controls those mobiles roaming in its area
-Reduces number of queries to HLR
-Mobile status(busy/free/no ans)
-Location area identity(LAI), TMSI AND MSRN .
ADVANTAGES OF GSMf GSM
Better Quality of speech
Data transmission is supported
International Roaming possible
Crisper, cleaner quieter calls
Improved Security and Confidentiality
DISADVANTAGES OF GSM
Dropped and missed calls
APPLICATIONS OF GSM
- Fleet management
- Automatic meter reading
- Toll Collection
- Remote control and fault
reporting of DG sets
Value Added Services
19 of 15
Code Division Multiple Access
CDMA Channel or CDMA Carrier or CDMA Frequency
Duplex channel made of two 1.25 MHzwide bands of electromagnetic
spectrum, one for Base Station to Mobile Station (DOWNLINK) and
another for Mobile Station to Base Station (UPLINK).
In 800 Cellular these two simplex 1.25 MHz bands are 45 MHz apart
In 1900 MHz PCS they are 80 MHz apart
CDMA Forward & Reverse Channel
1.25 MHz Forward / Reverse Link
CDMA Code Channel
Each individual stream of 0’s and 1’s contained in either the CDMA
Forward Channel or in the CDMA Reverse Channel
Code Channels are characterized (made unique) by mathematical
Code channels in the forward link: Pilot, Sync, Paging and Forward
Code channels in the reverse link: Access and Reverse Traffic
Multiple Access Schemes
FDMA Frequency Division Multiple Access
– Each user on a different frequency
– A channel is a frequency
TDMA Time Division Multiple Access
– Each user on a different window period
in time (“time slot”)
– A channel is a specific time slot on a
– specific frequency
CDMA Code Division Multiple Access
– A channel is a unique code pattern
– Each user uses the same frequency all
the time, but mixed with different
– distinguishing code patterns
ADVANTAGES OF CDMA
High quality voice
Soft Handoff Because Of Same Carrier Frequency
Increased Efficiency, Meaning That The Carrier Can Serve
Smaller Phones. Low Power Requirements And Little Cellto
Cell Coordination Needed By Operators.
Extended Reach Beneficial To Rural Users Situated Far
DISADVANTAGES OF CDMA
Near far problem.
CDMA is relatively low, and the network is not as mature
CDMA can not offer international roaming, a large GSM
Handsets are more sensitive to handling & costlier.
Switching to different services is almost not possible.
Service providers are few in number.
1G first generation of wireless telephone technology, first introduced in 1980s
and completed in early 1990s.
It's Speed was upto 2.4kbps.
It allows the voice calls in 1 country.
1G network use Analog Signal.
Poor Voice Quality
Poor Battery Life
Large Phone Size
2G technology refers to the 2nd
generation which is based on GSM.
It was launched in Finland in the year 1991.
2G network use digital signals.
It’s data speed was upto 64kbps.
It enables services such as text messages, picture messages and MMS.
It provides better quality and capacity .
2.5G is a technology between the second (2G) and third (3G) generation.
2.5G is sometimes described as 2G Cellular Technology combined with GPRS.
Phone Calls, Send/Receive E-mail Messages,Web Browsing
Speed : 64-144 kbps
Take a time of 6-9 mins. to download a 3 mins. Mp3 song
3G technology refer to third generation which was introduced in year 2000s.
Data Transmission speed increased from 144kbps- 2Mbps.
Typically called Smart Phones and features increased its bandwidth and data
transfer rates to accommodate, web-based applications and audio and video files.
Providing Faster Communication
Send/Receive Large Email Messages
High Speed Web / More Security
Video Conferencing / 3D Gaming
TV Streaming/ Mobile TV/ Phone Calls
Large Capacities and Broadband Capabilities
11 sec – 1.5 min. time to download a 3 min Mp3 song.
High Bandwidth Requirement, Expensive 3G Phones, Large Cell Phones
4G technology refer to or short name of fourth Generation which was started
from late 2000s.
Capable of providing 100Mbps – 1Gbps speed.
One of the basic term used to describe 4G is MAGIC.
Global Mobility Support
Integrated Wireless Solution
Customized Personal Services
Also known as Mobile Broadband Everywhere.
High QOS and High Security
5G technology refer to short name of fifth Generation which was started from
Complete wireless communication with almost no limitations.
It is highly supportable to WWWW (Wireless World Wide Web).
High Speed, High Capacity
5G technology providing large broadcasting of data in Gbps .
Multi - Media Newspapers, watch T.V programs with the clarity as to that of an
Faster data transmission that of the previous generations.
Large Phone Memory, Dialing Speed,clarity in Audio/Video.
Support interactive multimedia , voice, streaming video, Internet and other
5G is More Effective and More Attractive.
Transmission RF & Switch Data