Hello! I used to use home Wi-Fi without any problems, but when buying a new smartphone it became impossible. At first I could connect to the network, then I started to write "WLAN connection error", I rebooted the router, smartphone, nothing changed, then I saw the notification "The current network is not connected to the Internet, tap to fix it", I pressed, put a checkmark, it was everything is fine for a couple of days, then it began to knock out an error.
The notification appeared again three weeks later somewhere, I accidentally removed it, now I don't know what to do at all. I called the provider, told me to return the phone to the factory settings, and that's it. But the catch is, everyone can connect to the network except me. And my phone can connect to networks other than my home one.
Answer
Hello. If other devices connect and work to your router without problems, then the problem is not with the router, and even less with the provider.
You first need to try deleting your Wi-Fi network on your smartphone. Click on it, support and remove (or otherwise). For some reason, you didn't even write what kind of smartphone you have. After deleting, you need to reconnect to your home Wi-Fi network by entering a password. "WLAN connection error" should disappear.
If this does not help, then you need to use the advice of the provider - to reset the settings on the smartphone to the factory settings.
Today, users increasingly need to gain access to global resources or from any point on the map of a city, country or world. To provide opportunities for comfortable work and entertainment, information retrieval using a computer, laptop, mobile phone while out of the office or at home allows wireless technology. Today the most famous local area network in the world using this technology is WLAN. What is, how does this network function and how is it connected? You will find the answers to these questions by reading the article below.
Wireless network concept
WLAN stands for Wireless Local in Russian means "wireless local area network". In the course of its work, to establish communication, it does not use cable networks (as in the case of a conventional wired connection), but radio frequencies. This makes it space-independent and accessible to a large number of users. The most popular radio wave technology at the moment is Wi-Fi.
Communication between WLAN and Wi-Fi
Wi-Fi is an abbreviation for Wireless Fidelity, meaning "wireless reliability." Through the use of this technology, users gain access to the network throughout its coverage area. Most laptops are marked with Wi-Fi, which means they are compatible with WLAN networks.
What is wireless coverage and what does it depend on? This is nothing more than a Wi-Fi coverage area within which users can roam without breaking the connection. Typically, the signal transmission distance is about 100 meters. It depends on many factors, in particular - on the number of obstacles and their type. In any case, WLAN is a more reliable connection method than cable networks. At the same time, the number of users is practically unlimited, and the range of operation can be expanded by establishing overlapping (additional) access points and increasing the number of users in one zone.
WLAN in the phone
Access to the virtual network can be obtained not only from a computer / laptop, but also from a mobile. What is WLAN in my phone and how do I use it? In essence, this is the usual wireless Internet, but not on a laptop, but on your mobile phone. This function is now built into all modern models and can be very convenient. For example, you can use Wi-Fi while sitting in a cafe or waiting for your flight at the airport - in general, in any public place where there is an appropriate coverage area. At the same time, the use of the service, as a rule, is free of charge and does not depend on the presence / absence of a SIM card. The only negative is that the battery runs out quickly enough. You can connect Wi-Fi (WLAN) in the phone settings "Wireless networks" if you are within the range of the access point.
WLAN advantages
Local wireless networks are used as an extension or alternative to cable networks. Their installation is absolutely justified and, moreover, it is recommended in the case when cable routing is economically inexpedient and inconvenient. Installing a WLAN saves money and time in wiring. Thus, we can highlight its main advantages:
- providing access to the network and the Internet regardless of the user's location (freedom of movement + freedom in obtaining information);
- simplicity and fast construction speed;
- low cost of use;
- the ability to easily expand the network;
- compatibility with various types / models of devices.
It is difficult to overestimate the advantages of a wireless network (whether it is used indoors or outdoors), and therefore setting up a WLAN in an apartment / house is an excellent solution for ensuring a comfortable Internet experience, especially if several family members need access at once. Below is a guide on how to connect it.
Connecting and configuring a WLAN network
What is a home wireless network and what elements is it built from? It will consist of a modem / router (access point) and one or more computers (clients). It is assumed that you already have a modem or router, connected to the Internet and the required WLAN driver (if required, it can be easily downloaded from the network for any model of wireless adapter).
First, you need to correctly position the router:
Step by step guide
We proceed to setting up an access point (that is, a router):
- We go into any browser and enter the IP address of our modem. You can find it in the documentation that came with the device. Press the Enter button.
- We are asked to enter a username and password. They can also be found in the related documents. Usually the default pair is admin / 1234 (but may differ).
- We get to the main menu and find the WLAN item. How do I connect a wireless network? Opposite Wireless Lan, put a checkmark to activate. In the next line, Name (SSID), enter the name of your network (under which it will be shown in the list of available networks). Next, write the name of the region, and set Auto in the Channel field. Click "Apply".
- Moving on to the encryption settings (various methods). Open the Wireless Settings tab and select WPA (or WPA2) - this security protocol is better than the outdated 802.1x. Next, you will need to enter a password (depending on the model of the router, it can be called differently - Pre-shared Key / Security Ecryption, etc.). It must be at least 15-22 characters long. Click "Accept".
- Now you need to register the names of those devices for which access to your wireless network will be open. Select them from the list of connected equipment in the Setup Access List (Advanced / Wireless Settings menu).
- The final touch: put a tick in front of the Turn Access Control On item. Your secure Wlan is ready.
- What is VPN? This is a private virtual network between an access point (router) and a computer, which is recommended for secure data transfer within the network. For this there is the Hotspot Shield program.
- To configure all client computers on the network, use the setup wizard and set all the parameters that the access point uses.
By following the instructions above, you can set up your own wireless WLAN network secured by a reliable one. Now you have your own Wi-Fi coverage in your home - and the Internet will be even more convenient and easy.
Nowadays, there is an increasing need for access to information on the Internet at any time and anywhere in the world. This opportunity is provided by the wireless technology WLAN (Wireless Local Area Network). This technology does not use wired systems to connect and transmit information, but radio frequencies, this allows a huge number of users to be on the Internet at the same time.
In principle, this is a regular wireless Internet that can be used not only from a laptop or tablet, but also from a smartphone.
Today, such convenience is available in most modern models of various manufacturers. You can use the function for free and regardless of whether the device has a SIM card or not. The connection can be made in the "Wireless networks" settings while within the range of the access point. The only drawback of this technology is that in a Lenovo smartphone, like in any other mobile device, during a session of such a wireless connection, the battery is quickly discharged.
Setting up a wireless connection
When purchasing smartphones from Chinese manufacturers, many users do not take into account the Wi-Fi technology available in almost all mobile devices, which makes it possible to use the Internet through hotspots or access points.
Nowadays, many establishments provide the opportunity to use the Internet for free. But how do you activate this feature on your phone? The instructions below tell you how to set up a wireless Internet connection on your Lenovo in a couple of minutes.
- It is necessary that the smartphone has been configured with GPRS in advance.
- Find the Wi-Fi or WLAN icon in the device menu.
- Open, and the menu that appears, select "Search for available networks".
- Select the icon of an unblocked network.
- In the options, check the "Connect" item.
If everything is done correctly, the Lenovo smartphone will connect to a free network and the corresponding icon on the screen will turn green or blue. After such a connection is made, you need to go to the browser and use the Internet.
In the options, you must select a network profile and "Profile mode" click the "Custom settings" button. Next, you need to select a SIM card through which you will access the Internet, and in the "Java Profile for SIM" press WLAN and OK, then select "Start". This completes the connection, and now you can freely use the Internet.
Warning!
While talking about all the advantages of free wireless internet access, don't forget about the disadvantages. The fact is that such use of Wi-Fi in public places implies an unsecured connection, since there is no need to enter a password.
Therefore, other members of the local network can see the Internet resources you visit and the data entered, and attackers are able to intercept them for their own purposes. Therefore, it is not advisable to enter passwords in such places and conduct financial transactions.
Nowadays, there is an increasing need for access to information on the Internet at any time and anywhere in the world. This opportunity is provided by the wireless technology WLAN (Wireless Local Area Network). This technology does not use wired systems to connect and transmit information, but radio frequencies, this allows a huge number of users to be on the Internet at the same time.
In principle, this is a regular wireless Internet that can be used not only from a laptop or tablet, but also from a smartphone.
Today, such convenience is available in most modern models of various manufacturers. You can use the function for free and regardless of whether the device has a SIM card or not. The connection can be made in the "Wireless networks" settings while within the range of the access point. The only drawback of this technology is that in a Lenovo smartphone, like in any other mobile device, during a session of such a wireless connection, the battery is quickly discharged.
Setting up a wireless connection
When purchasing smartphones from Chinese manufacturers, many users do not take into account the Wi-Fi technology available in almost all mobile devices, which makes it possible to use the Internet through hotspots or access points.
Nowadays, many establishments provide the opportunity to use the Internet for free. But how do you activate this feature on your phone? The instructions below tell you how to set up a wireless Internet connection on your Lenovo in a couple of minutes.
- It is necessary that the smartphone has been configured with GPRS in advance.
- Find the Wi-Fi or WLAN icon in the device menu.
- Open, and the menu that appears, select "Search for available networks".
- Select the icon of an unblocked network.
- In the options, check the "Connect" item.
If everything is done correctly, the Lenovo smartphone will connect to a free network and the corresponding icon on the screen will turn green or blue. After such a connection is made, you need to go to the browser and use the Internet.
In the options, you must select a network profile and "Profile mode" click the "Custom settings" button. Next, you need to select a SIM card through which you will access the Internet, and in the "Java Profile for SIM" press WLAN and OK, then select "Start". This completes the connection, and now you can freely use the Internet.
Warning!
While talking about all the advantages of free wireless internet access, don't forget about the disadvantages. The fact is that such use of Wi-Fi in public places implies an unsecured connection, since there is no need to enter a password.
Therefore, other members of the local network can see the Internet resources you visit and the data entered, and attackers are able to intercept them for their own purposes. Therefore, it is not advisable to enter passwords in such places and conduct financial transactions.
What is a wireless local area network (WLAN)?
Network WLAN - a type of local area network (LAN) that uses high-frequency radio waves for communication and data transmission between nodes, rather than cable connections. It is a flexible data transmission system that is used as an extension - or an alternative - to a cable LAN within one building or within a specific area.
What are the benefits of using a WLAN instead of a wired LAN?
Productivity increase. The WLAN network provides a roomless network and Internet access. A WLAN allows users to move around an enterprise or organization while remaining connected to the network.
Simple and fast local network construction. No need to pull and reinforce cables.
Installation flexibility. A wireless network can be built where cables cannot be pulled; WLAN technology facilitates temporary network setup and relocation.
Reduced operating costs. Wireless networks reduce installation costs as no cabling is required. As a result, savings are achieved, the more significant the more often the environment changes.
Scalability. Expanding and reconfiguring a network for a WLAN is not a complicated task: user devices can be integrated into the network by installing wireless network adapters on them.
Compatibility. Different brands of compatible client and network devices will interact with each other.
Is WLAN setup and administration difficult?
No. It is easier to build a wireless local area network than a cable one, and the administration of both types of networks is almost the same. The WLAN client solution is built on a Plug-and-Play basis, which assumes that computers simply connect to a peer-to-peer network.
What is the communication range of WLAN devices?
The range of radio frequencies, especially indoors, depends on the characteristics of the product (including the power of the transmitter), the design of the receiver, interference 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 travel through walls and floors. The range or coverage area of \u200b\u200bmost WLAN systems reaches 160m, depending on the number and type of obstacles encountered. Additional access points can be used to expand the coverage area and thereby provide freedom of movement.
Are WLANs reliable?
Yes, WLANs are extremely reliable. Since wireless technology is rooted in the defense industry, securing wireless devices has been envisioned from the beginning. This is why wireless networks are generally more reliable than wired networks. WLANs use Direct Sequence Spread Spectrum (DSSS) technology, which is highly resistant to data corruption, interference, including deliberate interference, and detection. In addition, all users of the wireless network are authenticated with the system ID, which prevents unauthorized access to data.
To transfer 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, individual nodes must take their own security measures before being included in network traffic. In 802.11b WLANs, 40-bit and 128-bit encryption algorithms can be used in conjunction with user authentication to ensure higher network reliability. Interception of traffic, whether intentional or unintentional, is almost impossible.
What is IEEE 802.11b?
IEEE 802.11b is a technical specification issued by the Institute of Electrical and Electronic Engineers (IEEE) that defines the operation of wireless LANs operating in the 2.4 GHz band at 11 Mbps using the Direct Sequence Spread Spectrum protocol.
What is the bandwidth of a WLAN 802.11b network?
WLAN 802.11b networks operate at speeds up to 11 Mbps. For users, the speed is comparable to that of a cable network. Just like in a regular network, the bandwidth of a WLAN depends on its topology, load, distance to the access point, etc. Typically, there is no discernible difference in wireless and cable performance.
What is an Access Point?
An access point connects the wired and wireless network and allows the latter to gain access to the wired network resources. Each access point expands the overall processing power of the system. Users can move between access points without losing network connectivity - just like connecting to a network using a cell phone. In other words, an access point is a piece of hardware and software that acts as a hub for a wireless client and provides a connection to the wired network.
How many users can one WLAN system support?
The number of users is almost unlimited. It can be increased by simply installing new access points. With overlapping access points configured on different frequencies (channels), the wireless network can be expanded by increasing the number of users in the same area. Overlapping channels, which will not create mutual interference, can be installed simultaneously no more than three; these channels will triple the number of network users. Likewise, you can expand your wireless network by installing access points in different parts of the building. This increases the total number of users and enables them to move around the building or site of the organization.
How many users can one AP support at the same time?
The number of users in this case depends, first of all, on the traffic load. In a WLAN, 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 that users perform.
