Tuesday, December 14, 2010
【 Weak current College 】 wireless Internet access and inefficient four solutions
Whenever we access tunnel or corridor, always subconsciously pulled out from his pocket, mobile phone to test whether the current position is a wireless signal. This phenomenon for wireless Internet access is also exist on the same wireless LAN in different places, wireless Internet signal may also encounter this issue differ, this issue will have a direct impact on the efficiency of wireless Internet access. So when a wireless LAN to a location in the wireless Internet signal weak, we take measures to improve the efficiency of wireless Internet? this article specifically for this purpose are summarized below trick to help you wireless Internet users to improve the efficiency of the Internet!
Remove the obstruction interferes with
To the extent possible, will the wireless transmission signal on the way to remove all obstacles. Considering wireless Internet signal is transmitted through the straight path, once wireless Internet signal during the transfer process when you come across all kinds of obstacles, wireless Internet signal strength often can get a degree. Especially wireless Internet signal obstructions in the face of the block of metal, it has more of signal attenuation is staggering.
Some data indicate that the wireless Internet signal transmission distance control in 10 meters, even though the Internet signal has been through two brick wall, but the wireless Internet access is still able to achieve the ideal maximum transfer rate, but in this transmission distances, if wireless Internet signal and then through a reinforced concrete wall, wireless Internet access and transmission speeds of approximately only maximum transfer rate in half. Obviously, similar reinforced concrete walls such obstacles can be very severely undermine the strength of the wireless Internet signal, so the wireless router or wireless node equipment placement also becomes a wireless Internet signal strength of a very important factor.
In General, a wireless router or wireless node device signal coverage is approximately 300 feet, but if we do not have the correct placement of this device, or a wireless router or wireless node device nearby obstructions exists, then these devices in the wireless signal coverage is not so much; considering wireless router or wireless node equipment used by the antenna are often the whole direction in 360 degrees to transmit, broadcast, wireless signal, so we should try to think of ways to the wireless station close to the unit to the wireless router or wireless node equipment in the center of the coverage area.
Of course, many units of the wireless station may be scattered in several different rooms, we build units of wireless local area network, you can try the wireless router or wireless node device placed at the intersection of several rooms, where all the rooms of the workstation can be ideal for wireless Internet access. Some people may say that the wireless router or wireless node equipment placed on the intersection of several rooms, where many wireless station will not be able to obtain sufficient strength of the wireless Internet signal, which may affect the stability of wireless Internet access; in fact, as long as the wireless signal transmission distance not too large, LAN wireless station can receive signal strength can reach an average of 70%, this wireless signal reception strength almost does not affect the normal wireless network connection.
Small tip
So we have no way to accurately place the wireless router or wireless node equipment, to ensure that wireless Internet signal can effectively cover-to-LAN in all wireless workstations, and let them be efficient wireless network access? actually clever use of specialized tools NetStumbler, we can very easily find unit wireless LAN in the ideal node placement, enabling the device to a wireless router or wireless node device signal coverage to all units in every corner. If you want to use NetStumbler this professional tool's signal emission intensity judgment function, to search to the local wireless LAN wireless router device suitable placement, we should first of all from the network to find and download NetStumbler Installer, after the program installation in accordance with the default settings to a single mobile wireless workstation. After you have installed the program, we will be able to enable mobile workstation the installed wireless adapter device, to find local wireless LAN wireless access point. Future need to find a local wireless LAN wireless router or wireless node device the ideal placement, we just took the install NetStumbler program of mobile workstations on a local wireless LAN locations around at random, you can easily find local wireless LAN which signals blind zone belongs to, and which areas are good signal reception area, then in accordance with the Professional program in the test results to appropriate adjustment in the wireless router or wireless node device location, we will be able to ensure the wireless router or wireless node device is the most appropriate placement.
Remove external signal interference
If you have external signals or magnetic interference with the normal wireless Internet signal transmission, wireless Internet access and efficiency also is significantly impacted, so we should, as far as possible, remove the external signal interference. With normal wireless communication, wireless Internet signal transmission are other electromagnetic signal interference. Because IEEE802.11b/g wireless Internet access and standard frequency, real life 2.4GHz in many industrial device frequency also happens in this range, the wireless network signal is very vulnerable to the same frequency communication signal or electromagnetic signal of "harassment".
If the wireless LAN is there a very powerful electric or magnetic field exists, then the wireless Internet signal transmission will inevitably be affected. For example, a friend to the wireless router or wireless node device placed in air conditioning this high-power appliances devices nearby, found in air conditioning equipment is in working condition, wireless Internet access will appear strange network drops down, and air conditioning equipment shutdown after running a wireless station can properly access wirelessLocal area network.
We also found that, whenever the unit staff near the wireless router or wireless node device location using cell phones for wireless communication, wireless Internet access and transmission speed is not very stable, primarily wireless Internet signal from the mobile phone communication signal effect of the harassment. So when we found a local WLAN in strong electric or magnetic field, you should promptly as possible would be the strong electric or magnetic emission source, make sure that the wireless Internet signal in a relatively stable environment for transmission. If you encounter a working frequency same special phenomenon, we may wish to enter into a wireless router or wireless node equipment of admin interface, and adjust their operating frequency for the Elimination of interfere with each other.
Carefree wireless node equipment
Want to learn on the wireless router or wireless node device "tuned" to ensure that they are able to launch the most strong wireless signal. If after careful testing and found that wireless Internet signal very weak, but the wireless router or wireless node device recently does not occur when the location changes, then we may attempt to change the wireless router or wireless node device channel parameters, see wireless Internet signal emission intensity is to be strengthened. To modify a wireless Internet signal channel parameters, we need only to system administrator access to the wireless router or wireless node equipment of admin interface, find the channel parameter, and then the original numerical basis slightly modified.
If your wireless router or wireless node device supports auto-dial feature, we may wish to enable this function successfully in a timely manner, so as to allow the wireless router or wireless node device in open when you can successfully connect to the Internet network; in order to be able automatically to a wireless local area network, each workstation allocation set up the appropriate TCP/IP Internet access parameters, we can also use a wireless router or wireless node device built-in DHCP feature is enabled, it also improves the efficiency of wireless stations online.
If a local WLAN using a wireless router or wireless node device support antenna removable feature, so we have Internet access in the future once the signal weaker phenomena may wish to consider the wireless router or wireless node device removed the original antenna, additionally installed a wireless-gain antenna for enhanced zoom wireless Internet signal, in general the price of such equipment are often cheaper. If we want to ensure that wireless Internet signal during the transfer process does not decay, and also to ensure signal transmission distance farther, then consider using the gain value for large wireless antennas, on the contrary, if the wireless signal transmission distance compared to the past, we only use the gain value smaller antenna can solve the problem. Of course, for PCI Wireless card device, taking into account their needs to be installed in the workstation's host box, so many friends worry about PCI Wireless card with the antenna will be screened live workstation chassis shell, thus affecting the normal wireless Internet signal receive; in fact, we can choose to market that feeder longer external antenna to improve wireless station Internet signal reception capabilities, or installed in a workstation PCI wireless adapter cannot communicate with the wireless node equipment to establish a reliable wireless network connection.
Other "fragmented" trick
Improve the efficiency of wireless surfing trick a lot. For example, we can use the wireless station while the two models of the same wireless network adapter devices on their load balanced setup parameters, allowing them to work at the same time, this imperceptibly improves wireless station signal reception capabilities, acquired by means of wireless surfing than solely a network connection for the Internet faster 1.5 times.
If you have only one wireless network adapter devices, we can try to save the bandwidth resources point of view, to improve wireless Internet signal transmission speeds. For example, in the download information or browse through information, less malicious programs, advertising information as useful information is transferred to the local hard drive, and no doubt these spam consumes valuable bandwidth resources, so we can try to use professional tools, to be similar advertising information filtering out spam content all in order to reduce the transmission of wireless signals, thus achieving save valuable bandwidth resources purposes; for example, we can try to use the associated advertising blocker, or killing rogue program software to reduce unwanted network traffic, while not necessary picture display function temporarily shut down, and so on, ensure that the limited network bandwidth resources be used for effective information transfer, then the wireless Internet access speed can be significantly improved.
In addition, Internet bandwidth resources intact, we were able to skilfully use data compression technology to larger information compression process, then the compressed information transfer out, you can indirectly increase the wireless signal transmission efficiency.
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