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CDPD

a. CDPD. Cellular Digital Packet Data. Presented by: Ravi kumar. P. What is CDPD?. Cellular Digital Packet Data (CDPD) is a technique used for transmitting small chunks of data, commonly referred to as packets, over the cellular network in a reliable manner.

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CDPD

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  1. a

  2. CDPD Cellular Digital Packet Data Presented by: Ravi kumar. P

  3. What is CDPD? Cellular Digital Packet Data (CDPD) is a technique used for transmitting small chunks of data, commonly referred to as packets, over the cellular network in a reliable manner. It allows users to send and receive data from anywhere in the cellular coverage area at any time, quickly and efficiently. CDPD technology provides extensive, high speed (data can be sent over the Airlink at a rate of 19.2 kilobits per second), high capacity, cost effective data services to mobile users. With this technology, both voice and data can be transmitted over existing cellular channels.

  4. CDPD overlay network The CDPD overlay network is made up of a combination of key components that operate together to provision the overall service.

  5. Components of CDPD overlay network • Mobile End System (M-ES) • Fixed End System (F-ES) • Mobile Data Intermediate System (MD-IS) • Mobile Data Base Station (MDBS)

  6. Graphic representation

  7. Mobile End System (M-ES) M-ES is defined as any mobile computing device which is equipped with a CDPD modem (e.g. a PC). Unlike voice cellular phones, the decision to initiate a transfer, or hand-off from one cell to another cell is under the control of the CDPD M-ES itself, as it is the M-ES which is responsible for monitoring the received signal strength of the cellular channels being used.

  8. Mobile Data Base System (MDBS) MDBS is primarily responsible for RF channel management. It is located at the voice cell sites and is responsible to instruct the M-ES to "hop" to new channels for continued communication in the event voice communication (which is the priority traffic) is detected. It also handles the leg work for the M-ES in locating new channels when a hand off is required between cell sites.

  9. Mobile Data Intermediate System (MDIS) which is a stationary network component with similar responsibilities to the cellular voice switch. It is responsible for keeping track of the M-ES's location and routing data packets to and from the CDPD network and M-ES appropriately. It has been referred to as the "brain" of the network, because of its functionality. Not only is it responsible for ensuring that an M-ES is valid to log on to the network, but it also stores information on the M-ES's last known location, traffic statistics and billing information.

  10. Fixed End System (FES) which is defined as a stationary computing device, such as a host computer or an on-line information service.

  11. Intermediate System (IS) Intermediate System (IS) is made up of (off the shelf) routers which are CDPD compatible with the primary responsibility for relaying the data packets.

  12. CDPD – Circuit Switch

  13. how big is the market? CDPD technology is now available in 39 of the top 50 Metropolitan Serving Areas (MSAs) within the United States and is following internationally as well, with introductions in four cities in Ecuador.

  14. Applications Transactions: credit card verification e mail notification & delivery information retrieval systems Broadcast: weather advisories traffic advisories advertising national & international news

  15. CONCLUSION Mobile data services are here today and provide solid business benefits that are quantifiable. Users of traditional data networks should be aware of the capabilities wireless data communications applications offer, and must consider how these applications can be used effectively as business tools.

  16. More information on CDPD Please refer to…. • www.cdpd.org • www.datalife.gtem.com • www.pcsi.com • www.uplanet.com

  17. THANK YOU

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