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Changes between Version 2 and Version 3 of SyncScan

Author:
rektide@voodoowarez.com (IP: 0.0.0.0)
Timestamp:
09/28/06 09:13:11 (11 years ago)
Comment:

added link to paper

Legend:

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  • SyncScan

    v2 v3  
    1 SyncScan, is a technique for continuously tracking nearby base stations by synchronized short listening periods at the client with periodic transmissions from each base station. In sycnscan the AP's on a particular channel send beacons at a fixed time interval, allowing adapters to only listen at discrete periods and to get infomration about all the AP's in the neighbourhood. But this coordination adds significant synchronization overhead which are difficult to implement for a large and complex network: the system relies on AP's maintaining a semi-constant 'phase' between their beacons. 
     1SyncScan ([http://www.cs.ucsd.edu/~iramani/sync_scan.pdf]), is a technique for continuously tracking nearby base stations by synchronized short listening periods at the client with periodic transmissions from each base station. In sycnscan the AP's on a particular channel send beacons at a fixed time interval, allowing adapters to only listen at discrete periods and to get infomration about all the AP's in the neighbourhood. But this coordination adds significant synchronization overhead which are difficult to implement for a large and complex network: the system relies on AP's maintaining a semi-constant 'phase' between their beacons. 
    22 
    33Using sync_scan the overhead of scanning neighbors is staggered over short periods of time instead of only at the time of handoff.  by scheduling in advance when to scan channels, a client can spend a minimum amount of time scanning channels, while still maintaining a very up to date list of available ap's, useful for mobility and triangulation techniques.