Transcript Updated final PP - Faculty Web Sites

Broadcast Technology
RTV 151
Telephony
Internet & WWW
Broadband & Wireless Digital
Mobile Communication
Developing Technologies
G 3G / 4G / 5G cell phones -- packet and circuit switching
G Wi-Fi
G 802.11 and 802.11x refers to a family of specifications
developed by the IEEE for wireless LAN technology.
G Institute of Electrical and Electronics Engineers,
pronounced I-triple-E
G WiMax
G Also known as IEEE 802.16--intended for wireless
"metropolitan area networks". Provides broadband
wireless access (BWA) up to 30 miles (50 km) for fixed
stations, and 3 - 10 miles (5 - 15 km) for mobile stations.
G WiFi/802.11 wireless local area network standard is limited
in most cases to only 100 - 300 feet (30 - 100m).
G Clearwire bought by Sprint (phased out as separate)
Why 802?
The 802 group is the section of the IEEE
involved in network operations and
technologies, including mid-sized networks
and local networks. Group 15 deals
specifically with wireless networking
technologies, and includes the now
ubiquitous 802.15.1 working group, which is
also known as Bluetooth.
Developing Technologies
WPAN
Wireless personal area network
Bluetooth and Zigbee
Personal hotspots
RFID
“IBM Uses RFID to Track Conference Attendees”
“New chip promises to track kids from miles away”
Tracks things and people
DTV? / HD Radio
Multicasting channels -- data transmission?
Two way interactivity
FCC approval
More wireless data transfer…
Like AppleWatch, ApplePay
Near field communication (NFC) is the
set of protocols that enable electronic
devices to establish radio
communication with each other by
touching the devices together, or
bringing them into proximity to a
distance of typically 10cm or less.
An NFC device requires something that
is plugged in with constant power as
the receiver.
Developing Technologies
Bluetooth -- 802.15.1
Name comes from Harald Bluetooth, king of Denmark in the
late 900s
There are lots of different ways that electronic devices can
connect to one another--Component cables, Electrical
wires, Ethernet cables, WiFi, Infrared signals…
Bluetooth: a networking standard that works at two levels:
Agreement at the physical level – it’s a radio-frequency
standard;
AND, agreement at the protocol level: products have to
agree on when bits are sent, how many will be sent at a
time, and how the parties in a conversation can be sure
that the message received is the same as the message
sent. (headphones, cell phone, GPS, PDA)
Developing Technologies
ZigBee
The set of specs built around the IEEE 802.15.4 wireless
protocol.
Name "ZigBee" derived from the erratic zigging patterns
many bees make between flowers when collecting pollen.
The standard is regulated by a group known as the ZigBee
Alliance, with over 150 members worldwide.
Bluetooth focuses on connectivity between large packet
user devices--laptops, phones, major peripherals….
ZigBee is designed to provide highly efficient connectivity
between small packet devices.
Smart Home video
ZigBee and … Z-Wave
Mesh type connection
Open standards vs. proprietary…
Proprietary or agreed-upon?
VHS vs. Beta (home video)
DVD-R / DVD-RW vs. DVD+R / RW vs.
RAM
SD cards or compact flash cards
HD-DVD vs. BluRay
WMA vs. QuickTime etc. codecs
HDTV (8-VSB / COFDM)
Technical changes
Copper wires to fiber optic cable
Circuit Switching to packet switching
Landline to wireless
Convergence of technologies and
companies
Cell Phones
Early -- 2-way radio type service
Phone / ‘cells’ / towers
Ugly towers?
Connects to Mobile Telephone Switching
Office (MTSO)
Going to another cell phone in same area on
same service, routed to another tower
To another service or a landline, routed to the
Public Switched Telephone Network (PSTN)
But…phase out of PSTN
Generations
‘two-way radio’ style
‘cellular’ process developed by (‘old’) AT&T
IG -- analog -- 1983 -- AMPS -- ‘advanced
mobile phone service
2G -- digital introduction -- early 1990s
CDMA, TDMA initially in the U.S. (CDMA: Sprint,
Verizon)
GSM type adopted first in Europe (AT&T / TMobile)
Generations
3G -- higher data transmission speeds -switch to packet switching (Interim -- ‘2.5G’
‘Edge’)
Verizon, AT&T, Sprint & T-Mobile all offer
high speed 3G wireless networks. All moving
to 4G...but, interim technologies
3G -- about 3 mbps throughput; 4G about 10
mbps (about 10x faster)
Based on phone AND network infrastructure
Today…
Although GSM and CDMA are often the
foundation…also LTE, HSPDA, UMTS
High-Speed Downlink Packet Access (HSDPA)
is an enhanced 3G system
UMTS (Universal Mobile Telecommunications
Service) is a 3G broadband, packet-based
transmission of text, VOIP, video, and
multimedia at data rates up to 2 Mbps. UMTS
is based on the Global System for Mobile
(GSM) communication.
Today…
GSM -- Global System for Mobile
communication (AT&T, T-Mobile)
CDMA -- CDMA stands for Code Division
Multiple Access (Sprint, Verizon)
4G – LTE example
Evolution… 3G, 3G HSPA, 3G HSPA
Evolution,WiMax, 4G LTE, 4G LTE Advanced
4G LTE Advanced (LTE-A) is ‘the true 4G’
Other: WiMax2 (802.16m)
What we have really had is ‘pre-4G’
Cell phone as hybrid medium
Delivery of video to cellular phones became
widespread… voice / data … and
Verizon’s V-Cast service (3G EV-DO) failed
MobiTV service (needs unlimited data plan)
Both use the cellular network to deliver the
content.
MediaFlo, developed by Qualcomm, used part of the
television broadcasting spectrum (channel 55) to
send multi-media content to mobile phones (as
noted before). (spectrum sold)
Allows wireless carriers to offer video content
without taking up much needed bandwidth in their
cellular network. ….now trying 
Now trying…
Multimedia Broadcast Multicast Service
(eMBMS), which is also known as LTE
Broadcast.
Broadband delivery -- wired
DSL
DSLAM / extenders (digital subscriber line access multiplexer)
IPTV (AT&T: U-verse, Verizon: FiOS)
Dedicated line (no slowdown)
Cable modem (DOCSIS -- 1.0 / 2.0 / 3.0)
Data Over Cable Service Interface Specification
Shared down trunk line (slowdown)
Information service / no open access
Fiber to the home/premises (FTTH/P)
FTTN -- fiber to the node (last mile is coaxial cable for cable &
twisted-pair copper for DSL) … vs. AT&T now with U-verse build
Broadband over power line (BPL)
Interference
State approval
Broadband delivery -- wireless
Fixed wireless broadband (FWB) (from MMDS)
3G mobile wireless (4G / pre-4G)
Wi-Fi (IEEE 802.11) (‘WLAN’)
Wi-Max (802.16) (www.clear.com)
Satellite
HughesNet & WildBlue (several now)
Latency problem (VoIP, games) “a time delay
between the moment something is initiated, and
the moment one of its effects begins or becomes
detectable”
Go back and forward a bit
Games
HMD, virtual reality, immersive action
Automotive telematics
Smart car
Now, smart home
E-Health
Wearables
Body monitor and communication
Home Networks
Residential gateway (aka - cable/DSL router)
‘the key device in most home networks’
Wired (server / hub / router) LAN
Wireless (wi-fi / WLAN / 802.11)
Interconnects all computers and other IP
devices
Connects the home network to the
broadband connection
Home Networks
Convergence
‘The Cloud’ – someone else’s server vs. all
data on your own home system
‘Base’ connects with all your devices
OTT (Google, Apple, Roku)
Home security
Tracking, control from anywhere, always
available
TV Everywhere
‘Specs’ Technical
specifications or standards
Like all issues – establish technical standards
HPNA -- Home Phoneline Networking Alliance
-- technology, built on Ethernet, allows all
the components of a home network to
interact over the home's existing telephone
wiring without disturbing the existing voice
or fax services
IEEE -- Institute of Electrical and Electronics
Engineers
Home ‘hot spot’ Applications?
Multiple networked computers
Computers share one printer
Integration of phone / cable or
satellite systems / DVR, Slingbox,
Netflix, digital linear channels,
etc. with IP
Security system connections
Automotive telematics
Home ‘hot spot’ Applications?
Control any IP device -- Microsoft has been
working with Whirlpool to allow users to
monitor their laundry with their home
network, computer, TV, and cell phone.
Continuing growth in American homes
operating a wireless network, making the US
the leader in adoption of wireless home
networks.
Wireless security
Wireless ‘cloud’ -- public places
Encryption types
WEP -- Wired Equivalency Privacy
easily hacked -- do a ‘Cracking wi-fi’ or cracking WEP search on YouTube
Wireless Hacking / WEP hacking / Free wi-fi anywhere
WPA -- Wi-Fi Protected Access
128 bit encryption
WPA Personal -- password protected
WPA-Enterprise -- server verified
Evil Twins
Phony hotspots to steal information
What else?
Smart Home (video) / robotics
Speech recognition
Types: Discrete, continuous & complete
Speech recognition gone awry
Better success demo (click screen when page loads)
Ultra HD video (cinema--replace film projection)
Electronic paper (Kindle, iPad) (e-paper demo)
E-ink / e-Books chapter
Wikis
GIGO conundrum?
Google docs as collaborative authoring?
Virtual / Augmented Reality
(RWWW)
Second Life (promo/commercial)
Google Earth and other competitors
Education, Entertainment, etc. in a
‘virtual world’?
Google Glass (failed)
Samsung VR HMD ‘Gear VR’
Semantic web
Computer speed, power and storage
How to simulate touch, smell, taste
HMD, haptics, immersive environment
Human-computer interface
Thinking machines
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