Cause:
The factors most frequently affecting the wireless signal:
1) Intrinsic factors:
·Transmission Distance.
Regarding
on the wireless device particularly working on 5GHz band, it will be
more sensitive to the obstacle. Though there will be more clear channels
than those of 2.4GHz bands, the wireless signal will be reduced
significantly and transmit in shorter range due to higher frequency.
·Antenna.
Omni-directional antennas and directional antennas
Omni-directional
antennas are resembled in our home products like wireless router or
wireless ADSL2+ Modem Routers, they radiate horizontally all around, but
are weaker upward or downward as the picture shows.
While
a directional antennas radiate strongly in a particular direction which
are usually used for high power outdoor products. The gain of a
directional antenna increases, also with the coverage distance, but the
effective coverage angle decreases. Generally, the higher gain value of
an antenna, the better directional ability will be.
For
directional antennas, the lobes are pushed in a certain direction and
little energy is there on the back side of the antenna. Please refer the
picture below.
This
phenomenon will be more significant once you deploy the High-Gain
antenna, so we recommend that to confirm precise on horizon direction
otherwise there be unexpected dramatic signal loss.
·Wireless Communication Performance.
The higher performance transmission rates, the better ability.
2) Extrinsic factors:
- Physical Barriers, such as wall or clapboard and so on;
- Other
similar devices and other sources such as microwave ovens, cordless
phones or other technologies that use the same band as Bluetooth or
security devices
- There are more than one AP or wireless routers working in the same Channel.
- The
location where an AP or wireless router is placed. Do your better to
place the device at a higher location to reduce the barrier’s
countercheck.
Solution:
Here
are some solutions to improve the weak wireless signal as the
reference, some problems caused by the inherent property of wireless
connection, only can work around,
1) Antennas should be positioned for best location and direction
- Deploy the antenna in good location and correct angle, and also make sure your wireless client devices are in the coverage;
-
For multi-story buildings wireless coverage, we recommend to placing
antennas at 45 degrees (diagonally) or 0 degrees (straight out parallel
to the floor) which will be more effective. Since antennas always
transmit weakly at the base, do not place your wireless client device at
the bottom of TP-LINK wireless router or access point.
Please
check the following picture as reference and you can find easily that A
point is recommend while B or C is in not good location.
2) Try best to avoid the extrinsic interference
- Avoiding
the physical interference in the wireless coverage, each wall or
ceiling will have a negative effect on wireless radio particularly the
ones built by solid metal material ;
- Keep
your device away from various electromagnetic noise sources that
generate RF noise, like microwaves, Monitors, electric motors, copying
and fax machines, etc.
- For
TP-LINK wireless products, we recommend to do corresponding settings to
avoid the interference from other networking and radio frequency
equipment.
First, please log into the product and you can refer to this link as guidance. Here we take TL-WR1043ND user interface as an example and then please go to Wireless->Wireless settings and
change the channel settings, the default value is Auto and here we
recommend select 1, 6 or 11 if you suffer high wireless interference.
For
802.11b&g, there are 14 channels designated in the 2.4 GHz range
and three non-overlapping channels recommended: 1, 6 and 11 (1, 7 and 13
in part European region, please obey your local regulations or laws).
Sometimes
the “well-known” channels will be also crowded and we recommend to
select the appropriate one adjusted to your local environment.
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