wireless generation
DESCRIPTION
How Generation in wireless industry worksTRANSCRIPT
..is the transfer of information over a distance , without the use of electrical conductors/wires.
a transition from
point-to-point communication
towards
person-to-person
communication…
Mobile radio telephone systemspreceded modern cellular mobile telephony technology. These systems are sometimes retroactively referred to as pre
cellular (or sometimes Zero
Generation)
systems.
First Mobile Radio Telephone-1924
Used analog radio signal.Introduced in 1980’sUses FDMA
The various standards--
NMT in Nordic countries- Sweden, Norway, Denmark and Finland ( )
AMPS (Advanced Mobile Phone System) in the United States(1983) and Australia ( )
TACS (Total Access Communications System) in the United Kingdom ( )
As Its Analog So It Was Highly Susceptible To Noise
Traffic Was Not Encrypted So Anyone Could
Eavesdrop By Tuning To The Correct Frequency
It was launched in the year in FINLAND.
2G Wireless
The technology of most current DIGITAL mobile phones-TDMA + CDMA
Features includes:- Phone calls- Voice mail- Receive simple TEXT messages
Speed: 10kbits/secTime to download a 3min MP3 song:31-41 min
Different variants of 2G
GSM(TDMA)
IS-95CDMA one
PDC(TDMA)
iDEN(TDMA)
IS-136D-AMPS
GSM
•DIGITAL CELLULAR SYSTEM
•CIRCUIT SWITCH SYSTEM
IS-95
•FIRST CDMA BASED DIGITAL CELLULAR
•BRAND NAME FOR IS-95 IS CDMA1
PDC
•DEVELOPED EXCLUSIVELY IN JAPAN
•COMPARED TO GSM,HAS A WEAKER BROADCAST
I-DEN
•DEVELOPED BY MOTOROLA
•CAN HAVE VIRTUALLY UNLIMITED
TALKING GROUPS
D-AMPS
•ADDS TDMA TO AMPS
•TRIPLES THE NO. OF CALLS THAT CAN BE
HANDLED ON A SINGLE AMPS CHANNEL
The Best Technology now widely available
Features includes:- camera phones- high speed packet data- GPRS- Send/receive large email messages- Web browsing- Navigation/maps- New updates
Speed: 64-144kb/secTime to download a 3min MP3 song:6-9min
Features include:
I-MODE DATA SERVICE.
CAMERA PHONES.
HIGH SPEED CIRCUIT SWITCHED
GPRS
EDGE
2G networks were built mainly for voice data and slow
transmission. Due to rapid changes in user expectation, they do not meet today's wireless needs.Cellular mobile telecommunications networks are being upgraded
to use 3G technologies from 1999 to 2010. Japan was the first
country to introduce 3G nationally, and in Japan the transition to
3G was largely completed in 2006. Korea then adopted 3GNetworks soon after and the transition was made as early as
2004.
Combines a mobile phone, laptop PC and TV
Features includes:- Phone calls/fax- Global roaming- Send/receive large email messages- High-speed Web- Navigation/maps- Videoconferencing- TV streaming- Electronic agenda meeting reminder.
Speed: 144kb/sec-2mb/secTime to download a 3min MP3 song:11sec-1.5min
Capability To Support Circuit And Packet Data At High
Bit Rates: • or higher in high mobility (vehicular) traffic
• for pedestrian traffic
• or higher for indoor traffic
Interoperability and roaming
Common billing/user profiles:• Sharing of usage/rate information between service
providers• Standardized call detail recording• Standardized user profiles
Capability to determine geographic position of
mobiles and report it to both the network and the
mobile terminal
Support of multimedia services/capabilities:• Fixed and variable rate bit traffic Bandwidth on
demand• Multimedia mail store and forward• Broadband access up to
UMTS- This Is Main 3G Technology That Uses WCDMA..
WCDMA (WIDEBAND CODE DIVISION MULTIPLE ACCESS)
-WCDMA is the higher speed transmission protocol in the UMTS
system-Radio channels are 5MHz wide.-Supports two basic modes of duplex: frequency division and time division(15 slots/radio frame).
-Multiuser detection can be used to increase capacity and coverage-operators like VODAFONE, SINGTEL, AT&T, TIM.
Audio/ Video.
VOIP.
Still image.
Moving images.
Virtual home environment.
Downloading softwares.
Features include:- A spectrally efficient system.- High network capacity.- Huge data rate.- Smooth hand off- Seamless connectivity & global roaming.- High quality of service.-An all IP. Packet switched network.
Speed: Suppose to allow data transfer up to
outdoor and indoor.
networks have been particularly designed to
accommodate WLANs and PANs based on Bluetooth
technologies.
suffers bandwidth limitations to accommodate these
networks
Technology 3G 4G
Frequency band 1.8 - 2.5GHz 2 - 8GHz
Bandwidth 5-20MHz 15-200MHz
Data rate Up to 2Mbps100Mbps moving -
1Gbps stationary
Switching Circuit/Packet Packet
Data Communications And Networking- B. A. Forouzanwww.Wikipedia.comwww.nmscommunications.comwww.mobilealliance.comEncarta Encyclopedia
Rupinderjit Khakh-
Patrick Wong-
Christina Moore-
Kevin Parker-
Rupinderjit Khakh–
DEPARTMENT COMPUTER SCIENCE
(Humber Collage)