Changes between Version 13 and Version 14 of Internal/WiMAX


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Timestamp:
May 3, 2010, 3:10:36 PM (14 years ago)
Author:
shweta
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  • Internal/WiMAX

    v13 v14  
    11= WiMAX =
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     2[[TOC]]
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    34This is a GENI project that addresses the challenges of integration and trial deployment of a commercial Mobile WiMAX radio as part of an open virtualized experimental framework. The project leverages a commercial 802.16e base station from NEC, replacing the standard WiMAX controller with an open software implementation that supports virtualization and layer 2/3 programmability. The most prominent features provided
    45by the modifed BS control framework include the capability to perform all frame switching using purely layer 2 information, and control mechanisms to provide isolation across slices, which is needed to ensure experiment repeatability.
    … …  
    1314
    1415The NEC WiMAX base-station hardware (see photo below) is a 5U rack based system which consists of multiple Channel Cards (CHC) and a Network Interface Card. The shelf can be populated with up to three channel cards, each supporting one sector for a maximum of three sectors. The BS operates in the 2.5 Ghz or the 3.5 Ghz bands and can be tuned to use either 5, 7 or 10 Mhz channels. At the MAC frame level, 5 msec frames are supported as per the 802.16e standard. The TDD standard for multiplexing is supported where the sub-channels for the Downlink (DL) and Uplink (UL) can be partitioned in multiple time-frequency configurations. The base-station supports standard adaptive modulation schemes based on QPSK, 16QAM and 64QAM. The interface card provides one Ethernet Interface (10/100/1000) which will be used to connect to the high performance PC used to control the device. The base station has been tested for radio coverage and performance in realistic urban environments and is being used in early WiMAX deployments – typical coverage radius is ~3-5Km, and peak service bit-rates achievable range from 15-30 Mbps depending on operating mode and terrain.
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     17== WiMAX API Documentation ==
     18The Open WiMAX API is being developed to provide experimenters access to the WiMAX basestation The API is a work in progress availabel via this [wiki:Internal/WiMAX/API  link]