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Broadcast Technology RTV 151

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Broadcast Technology RTV 151 Telephony Internet & WWW Broadband & Wireless Digital Mobile Communication – PowerPoint PPT presentation

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Title: Broadcast Technology RTV 151


1
Broadcast TechnologyRTV 151
  • Telephony
  • Internet WWW
  • Broadband Wireless Digital
  • Mobile Communication

2
Developing Technologies
  • 3G / 4G / 5G cell phones -- packet and circuit
    switching
  • Wi-Fi
  • 802.11 and 802.11x refers to a family of
    specifications developed by the IEEE for wireless
    LAN technology.
  • Institute of Electrical and Electronics
    Engineers, pronounced I-triple-E
  • WiMax
  • 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.
  • WiFi/802.11 wireless local area network standard
    is limited in most cases to only 100 - 300 feet
    (30 - 100m).
  • Clearwire bought by Sprint (phased out as
    separate)

3
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.

4
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5
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

6
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.

7
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 its 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)

8
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.

9
Smart Home video
  • ZigBee and Z-Wave
  • Mesh type connection
  • Open standards vs. proprietary

10
Proprietary or agreed-upon?
  • VHS vs. Beta (home video)
  • DVD-R / DVD-RW vs. DVDR / RW vs. RAM
  • SD cards or compact flash cards
  • HD-DVD vs. BluRay
  • WMA vs. QuickTime etc. codecs
  • HDTV (8-VSB / COFDM)

11
Technical changes
  • Copper wires to fiber optic cable
  • Circuit Switching to packet switching
  • Landline to wireless
  • Convergence of technologies and companies

12
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)
  • Butphase out of PSTN

13
Generations
  • two-way radio style
  • cellular process developed by (old) ATT
  • 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 (ATT / T-Mobile)

14
Generations
  • 3G -- higher data transmission speeds -- switch
    to packet switching (Interim -- 2.5G Edge)
  • Verizon, ATT, 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

15
Today
  • Although GSM and CDMA are often the
    foundationalso 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.

16
Today
  • GSM -- Global System for Mobile communication
    (ATT, 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

17
Cell phone as hybrid medium
  • Delivery of video to cellular phones became
    widespread voice / data and
  • Verizons 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 ?

18
Now trying
  • Multimedia Broadcast Multicast Service (eMBMS),
    which is also known as LTE Broadcast.

19
Broadband delivery -- wired
  • DSL
  • DSLAM / extenders (digital subscriber line access
    multiplexer)
  • IPTV (ATT 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. ATT now with U-verse build
  • Broadband over power line (BPL)
  • Interference
  • State approval

20
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

21
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

22
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

23
Home Networks
  • Convergence
  • The Cloud someone elses 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

24
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

25
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

26
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.

27
Wireless security
  • Wireless cloud -- public places
  • Encryption types
  • WEP -- Wired Equivalency Privacy
  • easily hacked -- do a Cracking wi-fi or
    cracking WEP search on YouTubeWireless 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

28
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?

29
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

30
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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