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HomeRF - PowerPoint PPT Presentation


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HomeRF . Presented by Srividya Srinivasan. Mission . The HomeRF working group was formed to establish the mass deployment of interoperable wireless networking access devices to both local content and internet voice, data and streaming media in consumer environments. Vision.

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homerf

HomeRF

Presented by

Srividya Srinivasan

mission
Mission
  • The HomeRF working group was formed to establish the mass deployment of interoperable wireless networking access devices to both local content and internet voice, data and streaming media in consumer environments
vision
Vision
  • Set up a wireless home network to share voice and data between PCs, peripherals, PC enhanced cordless phones etc
  • Access internet from anywhere in and around the home from portable display devices
  • Share ISP connection between PCs and other new devices
member companies
Member Companies
  • HRFWG includes leading companies from the personal computer, consumer electronics, peripherals, communications, software and semiconductor industries
  • HRFWG has developed a specification for wireless communication in home called the Shared Wireless Access Protocol (SWAP)
slide5
SWAP
  • The HomeRF SWAP is designed to carry both voice and data traffic and to interoperate with the PSTN and the Internet
  • Operates in the 2.4GHz ISM range
  • Uses digital frequency hopping spread spectrum – 50 hops / second
  • Provides 1 Mbps and 2 Mbps data rate
swap technology
SWAP Technology
  • Extensions of DECT ( Digital Enhanced Cordless Telephone ) and wireless LAN technology to enable a new class of home cordless services
network topology
Network topology
  • SWAP system operates in either
    • Ad hoc network
    • Managed network
  • Ad hoc Network
    • Only data communication is supported
    • All stations are equal
    • Control of network distributed between the stations
network topology1
Network topology
  • Managed network
    • For time critical applications such as interactive voice, Connection point is required to coordinate the system
    • The Connection point provides the gateway to the PSTN and can be connected to a PC via a standard interface like USB that will enable voice and data services
managed network
Managed network
  • The Connection point also provides power management for prolonged battery life by scheduling device wakeup and polling
node types
Node types
  • The network can accommodate up to 127 nodes
  • There are 4 basic types of nodes
    • Connection point – supports voice and data
    • Voice terminal – uses TDMA to communicate with base station
    • Data node – uses CSMA/CA to communicate with a base station and other data nodes
    • Voice and data node – uses both types of services