1. Dear visitor, you are viewing Rapid IPTV as a guest member who has restricted access to our forum. You can either sign-up or login with your username here: http://www.rapidiptv.com/login/

[TUT] - Wi-Fi Optimization

Discussion in 'Tutorials & Installation Guides' started by Cuvillier, Aug 17, 2016.

Watchers:
This thread is being watched by 1 user.
  1. Cuvillier

    Cuvillier Reseller Reseller Active Member

    100%
    Joined:
    Feb 19, 2016
    Messages:
    2,876
    Likes Received:
    583
    Liked:
    195
    Trophy Points:
    213
    Gender:
    Male
    Device:
    MINIX Neo U1
    Reseller Username:
    cuvillier
    Hello all,

    Today, I will show you tips and tricks to boost your connection. This tutorial can applies to most router, but more particulary for Freebox V6 ( FRENCH).

    1) How to choose the physical location of a WiFi access point:
    The location of your WiFi access point is crucial, because it really is this choice that will depend on the final and overall signal quality.
    [​IMG]
    Example spread of WiFi signal, according to calculations by Jason Cole.


    Some points known (or not) to keep in mind:

    - Avoid placing the access point in angles, corners or along walls.
    - Avoid too close to metal objects. The metal is quite effective energy abyss.
    - All materials return a portion of the radiation. Some absorb more than others, including concrete or bricks. The floors and ceilings are much better drivers than the walls.
    - Keep the microwave ovens that operate at the same frequencies as WiFi. The neon tubes also disrupt many signal.
    - Install the WiFi access point as high as possible.
    - Waves propagate on the sides and downwards.
    - Contrary to what one might think, if your access point is equipped with an antenna, turn it up to increase the horizontal range, or on the side for vertical reach. If it is equipped with two antennas, one upwards and the other on the side.
    - Liquids absorb wireless signals. The human being predominantly made up of water, our movements greatly affect the signal.

    2) Check and optimize its WiFi coverage:
    It exists on different platforms (mobile, tablet, ordis ...) full of software, most of them free, which can scan correctly his (or signals) surrounding WiFi (s) to infer areas shadows and blankets problems, or to verify the occupation of neighboring channels WiFi rates, to use less stressed.
    It is even strongly advised to use one before deploying a WiFi box or a WiFi access point (AP) to (try to) maximize its coverage and maximum network radiation.
    Personally, I use the Android "Wifi Analyzer" free and extremely configurable and complete.
    [​IMG]
    WiFi channel occupation rate via Wifi Analyzer.

    [​IMG]
    Modulometer (or Signal-meter) on the WiFi SSID channel of the WDA via Wifi Analyzer.

    The modulometer of "Wifi Analyzer" is very useful for the little that is quite accurately rule. Just then move slowly to the 4 corners of the coverage area to test the signal strength.
    PC (only), there is an equivalent software which refers for years: "netstumbler".
    If, like me, you like ones at Free ISP, there is also a application, less precise than "Wifi Analyzer", but who can troubleshoot, named "Freebox Companion" (Android / iOS).

    [​IMG]
    WiFi channel occupation rate via Freebox Companion.

    Or, if your ISP is fairly competent technically, he should be able to provide just the tools necessary for such audits.

    [​IMG]
    WiFi channel occupation rate via the instrument inner edge of the Freebox v6 ( "Revolution")

    3) Enable standard highest performance / The width of the highest band:
    Since 802.11n, it is possible to use two separate frequency bands, with higher bandwidth and thus gain in signal power.
    It is therefore strongly advised to activate this mode via the administration of your box or WiFi access point interface.
    You can then perhaps adjust the range of channels used.

    [​IMG]
    WiFi settings Freebox v6 ( "Revolution") via Freebox Companion.

    [​IMG]
    WiFi settings Freebox v6 ( "Revolution") via the array of inner edge of the Freebox v6 ( "Revolution").

    In the case of the Freebox presented here, the box unfortunately knows that manage the 2.4 GHz (single band), however, can play using a range of channels (up to 8 at a time! ) and a higher bandwidth (40 MHz).

    4) Some advanced settings:
    Again, according to the technical competence of your ISP, you will (or not) can be configured specifically (at your risk) some WiFi card's advanced settings of your box or access point.

    [​IMG]
    Examples of configurations via Radio Table of inner edge of the Freebox v6 ( "Revolution").

    There, we find much better than the Klingon or Elvish together: we are face to face with a new barbarous language yet certainly not translated so far, but I will again play my experience to detail you better these onomatopoeia:

    Greenfield: This option, if enabled, allows 802.11n equipment to communicate with each other faster if no previous component WiFi (802.11a, 802.11b or 802.11g) is present in their scope.
    shortgi20 / shortgi40: Enables, if selected, to reduce the transmission intervals (Guard Interval) to increase transfer speeds.
    ldpc (Low Density Parity Check) / Codes "Gallager" error correcting codes inherited from linear 802.16e (Mobile WiMAX), concerning only 802.11n and 802.11ac.
    smps: Cuts part of antennas when there is no activity to reduce power consumption.
    rx_stbc / tx_stbc: Improves reliability of the transfer (RX or TX) by sending the same packet multiple times, which reduces errors but also greatly reduces throughput.
    delayed_ba: Sends the payment for several frames at once instead of one for each acquittal. Improves throughput but also increases latency.
    max_amsdu_7935: You can aggregate multiple data packets in one large package of 7935 bytes, which gives less encapsulation and thus accelerates the flow, but more data is lost in case of error.
    dsss_cck_40: Old inherited standard 802.11b.

    Depending on the brand and / or model of your access point or your box, you can also find the following sweet words in your settings:

    Beacon Interval: Time interval (in ms) between two transmissions of a beacon frame (Beacon), giving information about the BSSID (Basic Service Set Identifier), features, and possibly the SSID.
    DTIM Interval: Time interval (in ms) between two transmissions DTIM (Delivery Traffic Indication Message), to indicate the WiFi clients making the radio watch (for energy conservation) how often wake up to listen messages broadcast by the access point.
    Fragmentation Threshold: Maximum size of packets sent (in bytes). Over the package is bigger and the consequences of poor reception of this package will be important because it must then retransmit the packet entirely in error.
    RTS Threshold size of a data packet (in bytes) from which the issuer will make a speech right to request any other Issuer falls transmit simultaneously, resulting in a collision with result in the loss of transmitted packets. This value is decreasing as part of a network with a lot of traffic to avoid collisions and maximum collapse debits.
    WMM (Wireless Multimedia Extensions): Allows you to assign a high priority to the various media streams.

    SOURCE
    You will find more informations and explications about wifi functionalities and other :)
     
    Tags:
    Rapid IPTV likes this.

Share This Page

Loading...