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Market Requirements for Home Area Networks - Spectrum Implications

Market Requirements for Home Area Networks - Spectrum Implications. Will Dobbie Multimedia Applications 01473 645452 will.dobbie@bt.com. Outline of Presentation. Customer Requirements Home Network Systems Wireless Home Network Evolution Mobility in the Home Current Frequency Bands

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Market Requirements for Home Area Networks - Spectrum Implications

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  1. Market Requirements for Home Area Networks - Spectrum Implications Will Dobbie Multimedia Applications 01473 645452 will.dobbie@bt.com

  2. Outline of Presentation • Customer Requirements • Home Network Systems • Wireless Home Network Evolution • Mobility in the Home • Current Frequency Bands • Wireless Home Network Options • Commercial Requirements • Spectrum Implications

  3. Customer Requirements • Customers want services - not Home Networks • Home Network should: • Connect fixed and mobile access networks • Distribute telephony, Internet, TV through the home • be idiot proof - plug & play • be affordable - ideally free! • Ideally require no new wires - aesthetics/hassle • Give whole house coverage where required • There should be a limited number of easily understood options covering all applications

  4. USB IEEE1394 IRDA Bluetooth HomePNA 10BaseT DECT Bluetooth Home RF ATM25 100BaseT IEEE1394b 802.11a HIPERLAN 1/2 Home Network Systems Wired Wireless Short Reach ‘Cluster’ <10m Long Reach Home Network >10m

  5. Wireless Home Network Evolution Personal Area Network - interconnecting devices in one room inc. wearable terminals. Likely to start with Bluetooth in PC’s and cellphones Home Access Network - multiple simultaneous services anywhere in the home. Driver will be Internet inc. video to portable PC’s etc. Wireless-LAN’s based on Ethernet protocols Wireless Home Network - mass market product inc. the above plus fixed and portable audio/visual terminals e.g. home server, camcorder etc. - will have to interface with Ethernet and IEEE1394

  6. Wireless Home Network Evolution Office Bedroom Network Termination Broadband Networks(s) Kitchen Lounge Garden Home Server

  7. Mobility in the Home • Wireless avoids the need for wires! • This make it easier to take up new services • Allows interconnection with cellphones, PDA’s etc. • It also allows for new portable terminals inc. TV’s, web pads, games pads, videophones etc. • Web pad is the logical terminal for interactive TV • More suitable than TV or PC for videophone • Likely to replace the PC for some applications

  8. Current Frequency Bands 1.88-1.9GHz- Allocated to DECT - Performance is acceptable for telephony and low rate data 2.4-2.483GHz- Unlicensed band used for low power industrial, scientific and medical applications (e.g. vulcanising, OB/mobile cameras, microwave ovens). Electronic tagging also proposed with 5w transmitters. Used for IEEE802.11 etc. and Bluetooth. Likely to become congested and unreliable for WLAN’s 5.15-5.35 and 5.47-5.725GHz- Allocated to HIPERLANs but shared with mobile satellite uplinks and military radars

  9. Wireless Home Network Options

  10. Commercial Requirements • Drafted by DTG and input to DVB • Aim is a harmonised European market • Interface with Ethernet and IEEE1394 terminals • Must allow 3 simultaneous video services at up to 9Mbit/s without unacceptable drop-outs or blocking • Home servers burst up to 32Mbit/s during trick-modes but DVB is likely to recommend a limit of 25Mbit/s • Must be easy for user to set priorities • Target price is 50 Euros per wireless interface

  11. Spectrum Issues • 2.4GHz band is likely to be dominated by Bluetooth • 5GHz band is the only option for broadband services with whole house coverage • DTG is developing an interference model for input to ETSI/BRAN and ITU-R • typical case based on terraced housing • worst case is a block of flats close to another • DVB is investigating take-up rate and usage patterns • Some users will want more than one RF channel • Even if all of the current 455MHz is allocated there will be cases where a channel is not available

  12. Spectrum Requirements • Limit new applications of the 2.4GHz band • Early release of 5GHz band • No dedicated allocation for HIPERLAN 1 • No allocation for fixed wireless access • Try to harmonise HIPERLAN 2 and IEEE802.11a • Ensure broadband PAN’s are compatible • Common approach across Europe • Frequency sharing studies on implications of ‘public’ applications especially in outdoor ‘HotSpots’ • Extra spectrum for very high bandwidth PAN’s in future - for HDTV from home servers etc

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