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Get info about the Encyclopedia of Networking and Telecommunicatons, 3rd edition (2001)
Download the electronic version of the Encyclopedia of Networking, 2nd edition (1996). It's free! Contribute to this site Electronic licensing info
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HDR (High Data Rate) Related Entries Web Links New/Updated Information Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM. Click here if you are looking for HFC (Hybrid Fiber/Coax) HDR is a Qualcomm wireless technology that provides high-speed, high-capacity IP packet data services that carriers can deploy in metropolitan areas. It can provide up to a 2.4-Mbit/sec data transfer rate in a 1.25-MHz channel for use by stationary users, portable devices, and mobile services. Data rates for mobile users will be lower than data rates for stationary users. Basically, a user of a wireless device can be located anywhere within a cell site, including inside buildings, and get Internet access without wires. HDR's high capacity is the result of maximizing the utilization of the available spectrum. It uses Qualcomm's CDMA air link technology. HDR is designed for data and it is "always on." Thus, it offers rapid connect time for users. By designing HDR for data and not for voice, Qualcomm engineers were able to avoid making compromises that would have reduced the performance of the system. HDR may be deployed alongside existing cellular/PCS networks, sharing the same cell sites, towers, and antennas. Basically, the carrier plugs an HDR card into their existing equipment and starts up the service. It will also need Internet connections to connect the base station to an Internet point of presence. Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.
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