WLAN - what is it and how to use it? How to connect and configure WLAN? What is WLAN in a phone, in a router, what is the difference with WiFi? What does wlan mean on a smartphone.

You want connect internet to Lenovo via Wi-Fi and don't know how to do it? In this article we will describe where in Lenovo settings Wi-Fi turns on and how to use it on a smartphone or tablet with operating system android.
If you activate Wi-Fi on your phone differently from what is written in the article, then we ask you to add in the reviews how you do it and indicate the device model.

What is Wi-Fi and why is it needed on phones or tablets?
This technology allows you to connect to Wi-Fi networks and use the Internet on your phone completely free of charge. Nowadays there are a huge number of places where you can access the Internet via Wi-Fi for free; it also happens that although there are accessible networks, they may have passwords. If you know the password, then enter it and use the Internet on your Lenovo phone. Many people install a router at home to which several devices can connect via Wi-Fi at once, this allows the whole family to use the Internet, some from a computer, some from a laptop, some from a tablet, or from phones and smartphones.

Now let's see how to enable Wi-Fi in Lenovo on Android.
Open "Settings" (System settings).
Next "System" (All settings).
Next "Wireless Networks".
Next "WLAN".
To activate Wi-Fi "Touch the WLAN slider."
Next, your smartphone or tablet will search for available WLAN networks and, if found, display a list with names.
To connect to a Wi-Fi access point, select the desired network from the list.

If the selected Wi-Fi network is password protected, you will have to enter the code, and if the password is not set, then simply connect to it and then you can use the Internet. Many people want to know whether it is possible to hack a Wi-Fi password, it will probably be impossible, unless of course you are some kind of hacker.

Like on a smartphone Lenovo disable Wi-Fi?
Just like you turned on Wi-Fi “Touch the WLAN slider” and turn it off. It is advisable if you do not use Wi-Fi, then turn it off, as it will constantly search for available networks and will quickly drain the battery.

• I hope the article helped you and you found the information how to turn on Wi-Fi on Lenovo.
• We will be glad if you add reviews, comments or useful tips, helping other users.
• Thank you for your responsiveness, useful advice and mutual assistance!

How to set up WLAN?

In this article I will tell you how to set up a WLAN (Wireless Local Area Network) and make this network secure.

First, you need to choose a normal WLAN router; you can quickly exchange data over a wireless network only when it complies with the 802.11n standard, which supports speeds of up to 300 Mbps, but this standard has not yet been finally approved; most routers have 802.11g standard, providing speeds of up to 54 Mbit/s, this will be enough for a high-speed Internet connection. I recommend buying the NETGEAR WNDR3300 router, it has good characteristics.

Rice. NETGEAR WNDR3300 router

The router must be positioned so that interference from cordless phones, microwave ovens, etc. does not block the router’s signal, because many devices operate at a frequency of 2.4 GHz, like Wi-Fi. It is better to mount the router as high as possible on the wall, and it is better to point the antennas vertically.

Secondly, let’s configure the router, I’ll tell you how to do this using the NETGEAR WNDR3300 as an example, but you can configure it on other routers in the same way.

Open the router settings page, type in the address bar Internet Explorer- 192.168.1.1, press Enter, in Basic Settings you need to enter data to access the Internet connection and click Apply, then go to Wireless Settings, in Name (SSID) enter the name of your network, under this name it will be shown in the list of available networks on other devices, in the next line, region, then select Auto in Channel - this is necessary for the router to select the channel with the least amount of interference, click Apply again.

Now to protect yourself you need strong password to prevent anyone from accessing the Internet through your connection. WLAN security has different encryption methods: WEP, WPA and WPA2. I recommend choosing WPA or WPA2, to do this, on the Wireless Settings tab you need to activate WPA-PSK (TKIP) or WPA2-PSK (AES), when Security Encryption is requested, you need to set a password, this password must be more than 15 characters, click Apply. In the router, we register the MAC addresses of only devices known to you in order to prevent other devices from accessing the router. To do this, in the Advanced menu item on the Wireless Settings tab, you need to select Setup Access List and from the list of connected devices, select those to which you want to give access and click Add. Check the box next to Turn Access Control On and click Apply. All, secure network ready.

For safety when connecting to points Wi-Fi access you can use the Hotspot Shield program, which creates a VPN (virtual private network) between a computer or laptop and a wireless access point (WLAN router), thereby creating protection when transmitting and receiving data. You can read about Hotspot Shield.

We have configured it, but the network refuses to work, what should we do?

You need to figure out what's going on, it's possible that your network may be blocked by another Wi-Fi network, other networks can be determined using the NetStumbler program, this program will show neighboring networks and on what channels they operate. And try setting a different channel in the router settings, different from the channels of neighboring networks.

If your network is working normally, but the connection periodically breaks down, perhaps the reason is a voltage drop in the supply network, because even a small voltage drop is enough for the router to lose connection; to prevent this from happening, you need to connect the router through a small uninterruptible power supply unit.

Also, data may not be transmitted over the network due to incorrect IP configuration, you need to check in the router settings whether the DHCP server is enabled, if there are several devices on the network that can be DHCP servers, they may conflict, to track what is conflicting, run the program DHCP Find.

If you cannot access the Internet, then you need to configure your browser: in Internet Explorer, click Tools - Internet Options, on the Connections tab in the section LAN setup, uncheck all items and opposite Automatic detection We also remove the parameters; if you have a different browser, then there are similar settings.

WLAN vs WI-FI

Trying to improve data transmission technology is more about ease and convenience. Whenever possible, we always want less effort to communicate with others. Modern technological advances make it possible to transmit and receive digital information without physical connection wires or fiber optics. Of course, for network administrators and engineers, nothing is more easy and convenient than wireless means of connecting devices.

WLAN, short for wireless local area network and sometimes called wireless local area network, is a network of computers over a distance of several hundred feet that uses high-frequency radio signals to transmit and receive data. The network can also connect multiple computers to a central information system, printer or scanner. This ensures mobility on the network (Internet), which also helps avoid the use of bulky and inconvenient cables for interaction. IEEE 802.11 is the primary standard for wireless local area networks.

In principle, WLAN allows peer-to-peer and/or point-to-point data transfers, such as LAN-to-LAN, WLAN-to-LAN or even WLAN-to-WLAN, in a relatively small area (building or campus). Regular local networks usually use twisted pair, coaxial wires or in some cases optical fibers. WLAN gets rid of these physical connections and instead uses electromagnetic waves to transmit and receive data on the network. Potentially, the transfer is not as fast as the speed provided by a regular local network, but for most users, average and industry professionals slow speed transmission is a minor limitation.

WI-FI stands for Wireless Fidelity. This term is actually the name trademark, used to mark products belonging to the category of WLAN devices. Devices or equipment branded with the WI-FI brand are based on the standards specified in IEEE 802.11. In most cases, WI-FI is considered by most to be synonymous with the actual standard itself.

An association of companies around the world called the WI-FI Union supports WLAN technology and related products. This alliance also certifies various hardware and devices if they meet interoperability standards. It should be noted that there are many devices that do comply with the standards but are not certified by the WI-FI Alliance and therefore do not have the WI-FI logo. The reason for this is the cost and hassle of the certification procedure.

A WI-FI device (ready) effectively means that it is ready to be used on a WLAN. Such devices range from desktops, laptops, notebooks to smartphones, palms and other small devices.

1. WLAN is a type computer network in a relatively small area, which excludes the use of physical means of communication.

2. WI-FI is the brand name for branded devices that comply with IEEE 802.11 standards.

3. Devices on a WLAN essentially use proprietary WI-FI products.

4. Ready WI-FI device simply means that it is ready for networking on the WLAN.

What is a Wireless Local Area Network (WLAN)?

Net WLAN- a type of local area network (LAN) that uses high-frequency radio waves rather than cable connections for communication and data transfer between nodes. This is a flexible data transmission system that is used as an extension - or alternative - to a cable local network within the same building or within a certain area.

What are the benefits of using a WLAN instead of a wired LAN?

Productivity increase. A WLAN network provides room-free networking and Internet access. A WLAN gives users the ability to move around a business or organization while remaining connected to the network.
Simple and fast creation of a local network. No need to pull or reinforce cables.
Installation flexibility. A wireless network can be built where cables cannot be laid; WLAN technology facilitates temporary network installation and relocation.
Reduced operating costs. Wireless networks reduce installation costs because cable connections are not required. As a result, savings are achieved, the more significant the more often the environment changes.
Scalability. Network expansion and reconfiguration for WLAN is not a difficult task: user devices can be integrated into a network by installing wireless network adapters on them.
Compatibility. Various brands of compatible client and network devices will interact with each other.

Is setting up and administering a WLAN difficult?

No. Wireless local network It’s easier to build than a cable network, and the administration of both types of networks is almost no different from each other. The WLAN client solution is built on a plug-and-play principle, which means that computers simply connect to a peer-to-peer network.

What is the communication range of WLAN devices?

RF range, especially indoors, depends on product characteristics (including transmitter power), receiver design, noise immunity, and signal path. The interaction of radio waves with common building objects, such as walls, metal structures and even people, can affect the range of the signal, and thus change the coverage of a particular system. Wireless networks use radio frequencies because indoor radio waves penetrate walls and ceilings. The range or coverage area of ​​most WLAN systems is up to 160 m, depending on the number and type of obstacles encountered. With the help of additional access points, you can expand the coverage area and thereby ensure freedom of movement.

Are WLANs reliable?

Yes, WLANs are extremely reliable. Because the wireless technology Rooted in the defense industry, security wireless devices was envisaged from the very beginning. This is why wireless networks are generally more reliable than cable networks. WLANs use Direct Sequence Spread Spectrum (DSSS) technology, which is highly resistant to data corruption, interference, and detection. In addition, all users of the wireless network are authenticated using a system ID, which prevents unauthorized access to the data.
To transmit particularly sensitive data, users can use the Wired Equivalent Privacy (WEP) mode, in which the signal is encrypted with an additional algorithm, and the data is controlled using an electronic key. Generally speaking, in individual nodes before inclusion in network traffic security measures must be taken. In WLANs operating under the 802.11b specification, 40-bit and 128-bit encryption algorithms can be used along with user authentication to ensure higher network security. Traffic interception, whether intentional or unintentional, is virtually impossible.

What is IEEE 802.11b?

IEEE 802.11b - released by the Institute of Electrical and Electronic Engineers (IEEE) data sheet, which determines the functioning of wireless local computer networks, operating in the 2.4 GHz band at a speed of 11 Mbit/s using the Direct Sequence Spread Spectrum protocol.

What is throughput WLAN 802.11b?

WLAN 802.11b networks operate at speeds of up to 11 Mbps. For users, the speed is comparable to the speed of a cable network. Just like in a regular network, the throughput of a WLAN network depends on its topology, load, distance to the access point, etc. Typically, there is no noticeable difference in the performance of a wireless and cable network.

What is an access point?

The access point connects the cable and wireless network and allows the latter's clients to access the resources of the cable network. Each access point expands the overall processing power of the system. Users can move between access points without losing connection to the network - just like when connecting to the network using cell phone. In other words, an access point is a hardware and software device that acts as a hub for a wireless network client and provides connection to a cable network.

How many users can one WLAN system support?

The number of users is almost unlimited. It can be increased simply by installing new access points. By using overlapping access points tuned to different frequencies (channels), the wireless network can be expanded by increasing the number of users in the same area. No more than three overlapping channels that will not create mutual interference can be installed simultaneously; these channels will triple the number of network users. Similarly, you can expand your wireless network by installing access points in different parts of the building. This increases the total number of users and gives them the ability to move around the building or area of ​​the organization.

How many users does one access point support simultaneously?

The number of users in this case depends, first of all, on the traffic load. In a WLAN network, bandwidth is shared among users in the same way as in a cable network. Based on the number of users, network performance also depends on the type of tasks performed by users.