WiFi signal strength and internet access

Discussion in 'Wireless Internet' started by Robert Nelson, Feb 22, 2004.

  1. I would think that if you have a connection, then it would support an
    internet connection.

    robert
     
    Robert Nelson, Feb 22, 2004
    #1
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  2. Robert Nelson

    Old_Timer Guest

    How low can the WiFi signal become and still support an internet
    connection?

    Charles
     
    Old_Timer, Feb 22, 2004
    #2
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  3. Robert Nelson

    hardworking Guest

    if the signal gets too low, then it cannot support a connection.
     
    hardworking, Feb 23, 2004
    #3
  4. Robert Nelson

    ahh Guest

    If the connection is not active. Then maybe the signal is too low! :)
     
    ahh, Feb 23, 2004
    #4
  5. Very low - wifi down rates the speed of the connection as the noise and
    errors get worse, so at extreme noise levels, the throughput will be like a
    28.8k modem. Then it falls over as the data is lost and cannot be
    retransmitted quickly enough.


    There isn't an actual answer as it depends upon what you're doing with the
    link, but its not the signal that matters, but the clarity of data and how
    fast you are trying to push data through it.

    Do you have a scenario in mind ?
     
    Graham in Melton, Feb 23, 2004
    #5
  6. I thought 1MB is the lowest rate on the 802.11b system, and 8MB on the 802.11g
    system if my memory serves OK.
     
    Adrian Boliston, Feb 23, 2004
    #6
  7. Robert Nelson

    Chris S. Guest

    Not true. I have been able to connect to the Internet and surf okay at 1mb
    with my Linksys WRT54G wireless G router.
     
    Chris S., Feb 23, 2004
    #7
  8. I think that a "g" router will drop down to "b" under poor signal conditions.
     
    Adrian Boliston, Feb 24, 2004
    #8
  9. Robert Nelson

    James Knott Guest

    According to what I read, "g" is more robust with low signal strength, than
    "b".
    --

    Fundamentalism is fundamentally wrong.

    To reply to this message, replace everything to the left of "@" with
    james.knott.
     
    James Knott, Feb 24, 2004
    #9
  10. Robert Nelson

    Tom Scales Guest

    Not really. It drops to slower G.
     
    Tom Scales, Feb 24, 2004
    #10
  11. Robert Nelson

    gary Guest

    Both b and g will retreat through a standard sequence of lower and lower
    negotiated bitrates if signal quality cannot be maintained. Signal quality,
    not merely strength, is the issue. Signal quality can be lowered by
    reflection (multipath echo), especially in environments where there are lots
    of exposed radio-reflective surfaces (like metal). 802.11g uses an encoding
    method that is less sensitive to multipath echo, so it should do better in
    these cases. On the other hand, early testing showed that 802.11g signal
    quality dropped off a little faster than 802.11b at the extreme fringe of
    range . I have read that improvements in antenna and receiver design have
    made this difference insignificant. So, all things considered. 802.11g
    should maintain signal quality as well or better than 802.11g, over the same
    distances. They should penetrate barriers equally effectively.

    BTW, 802.11g degrades down through 12 and 6 Mbps as the last two supported
    datarates. 802.11b degrades from 11 to 5.5 to 2 to 1. If your adapter starts
    out with a datarate of 12 Mbps or higher, it is running 802.11g. If it
    degrades to a datarate of 2 or 1, it has switched over to 802.11b. I've
    never seen this happen on my adapter, but it seems possible.
     
    gary, Feb 24, 2004
    #11
  12. Using the same router and a WUSB54G adapter some 50 feet diagonally
    through the house, the only time I ever get 54 Mbps is when I move the
    USB adapter around looking for the best signal, then it just jumps
    between 54 and 1 Mbps for a few seconds and then stays at 1. I bought a
    10' USB extension cable to be able to move the adapter to more
    locations, but I gave up trying to get anything better than 1, and
    concentrate more on getting a signal strength between Good and Very Good
    (I never can get Excellent).
     
    Bill Schnakenberg, Feb 24, 2004
    #12
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