What is wi fi direct in a smartphone. Wi-Fi Direct function - what is it for and how is it used on Android devices

1. Key Features
2. As it was before?
3. Characteristics
4. Unlike other types
5. disadvantages
6. Main disadvantages
7. findings
8. How technology works
9. Set up Wi-Fi Direct on Android devices
10. Disadvantages of Wi-Fi Direct

Question: What is WiFi Direct and why is it needed on the phone? How to transfer files via WiFi Direct?

Answer: WiFi Direct is a great opportunity to transfer any files from one phone to another to high speed . You probably transferred files via Bluetooth more than once and sometimes it takes a very long time to wait until one is transferred large file to another phone. And since in our time technologists are improving every day, we can watch movies on our phone High Quality , as well as the phone is capable of shooting no less high-quality video, which can take more than one GB of memory. And now, if we want to transmit or receive a video good quality , then even the fastest bluetooth will take a lot of time to transfer and that’s why we need to use wifi direct with which we can transfer files from one phone to another phone or device supporting this function ten times faster. Now you, I think, are beginning to understand what wifi direct is and why it is needed on the phone. How to transfer files via wifi direct ? nothing complicated on the transmitting phone, you need to enable wifi, and on the receiving phone or other device, turn on wifi and wifi direct. Then select on the phone the desired file , picture, music, or video and in the transfer functions select wifi direct, and on the receiving device confirm the reception and you yourself will see how quickly you can transfer via wifi direct compared to Bluetooth. You probably already understood basically what Wi-Fi direct is and why you need it , this function helps transfer files at high speed to another device.

Here's how to enable wifi direct on Android , maybe on some devices the way to turn it on may be a little different, but I think if you think for yourself a little it will not be difficult to find. And so to find where wifi direct is turned on on Android, open "Settings" then "All settings" then "More" and opposite the "WiFi Direct" item, check the box and the entire wifi direct function is turned on, now you can send and receive files at high speed, but Before that, do not forget to turn on WiFi on the transmitting device.

• I hope this article helped you learn at least a little what is a Wi-Fi direct and why it is needed on the phone and other devices.
• Reviews, comments, additions to the article, questions and answers can be added below.
• A big request is to provide mutual assistance and share useful tips.
• Perhaps your advice will help those who are looking for information to solve their problem.
• Thanks for the responsiveness, help and useful tips !!!

Every year there are more and more new technologies that are designed to improve and facilitate our lives. One of them is WiFi Direct. What is it will become clear if we consider in more detail the technology itself and the principle of its operation. Devices that support this method of communication are capable of transmitting data at high speeds - up to 250 megabits per second, and at a fairly large distance - up to 200 meters. And network reliability is provided by a higher degree of channel protection. To build a network on this basis, the router simply does not need to.

Key Features

It is worth considering WiFi Direct in more detail. What is it? This is a new standard for the transfer of information that allows several gadgets to connect to each other without using a router or other network device. It is not necessary for a person to participate in this process, since the devices are able to automatically detect each other. So far, this is not even a standard, but certification. Currently, two devices can connect via wireless connectivity only with the involvement of an intermediate link of the router. However, the router is no longer required if you use WiFi Direct. What this is, and how such a method works, is considered here.

This method allows you to connect multiple gadgets simultaneously. In addition to devices such as standard laptops, smartphones and telephones, you can connect digital photo frames, scanners, printers, VCRs, etc. to the network, and here the main condition is the presence of an appropriate chip.

As it was before?

Home networks have been subjected to the introduction of similar services and protocols several times. Among the currently existing WiFi Direct is considered the most promising development, which has only one obstacle to development - the reaction of consumers.

Some felt that this standard soon completely supersede the well-known Bluetooth, which is quite popular at the moment. So, if we consider WiFi Direct, what it is, it will become clear after determining the advantages of such a solution in comparison with traditional Bluetooth. Here we can talk about a higher data transfer rate, increased distance, as well as reliable channel security. However, there are drawbacks that are quite significant.

Characteristics

Worth considering WiFi Direct chips. How to use this technology will become clear after. Elements can be one of two types: for the 2.4 gigahertz range, 5 gigahertz and simultaneously supporting both of these values.

The technology has a couple of useful features: Device Discovery and Service Discovery. With their help, gadgets not only find each other and join a network without any human involvement, but also allow you to learn about the capabilities of each device. For example, if you need to transfer an audio file from a smartphone somewhere, then in the list of receiving devices there will be only those that are able to receive and use this type of data, and all the rest will simply be excluded from it. This allows the user not to scroll through the entire list in search of a suitable gadget, but only to select the one that is displayed.

Unlike other types

A regular WiFi network assumes the primacy of an access point that controls all other devices. The WiDi network also has a coordinator, but this function is transferred from one device to another, depending on power, autonomy, and functionality. So, the list of preferences looks like this: laptops, tablets, smartphones, consoles, and after them are peripheral devices, for example, printers, audio systems, digital cameras and others.

disadvantages

So, now you understand what WiFi Direct is; how to use it is also no longer a question. It is worth sorting out its shortcomings. It is they who cast doubt on the development of technology and its popularity.

Main disadvantages

• Cluttering the ether. When the wireless network is organized in the usual way, all devices are connected to one access point. In this sense, we can talk about the big difference between WiFi Direct. How to set up such a network? Pretty simple. Here we can talk about the simultaneous creation and operation of several networks in which gadgets communicate with each other, transmitting data. This leads to the fact that, for example, several dozen or hundreds of networks will work in a multi-storey building, creating a real mess on the air, as they all broadcast with different capacities and frequencies. Such networks cannot be controlled, which is why they create a real clutter of ether.
• Poor network security. While manufacturers of WiFi Direct Android devices are talking about better security of such networks compared to Bluetooth, in fact, everything is different. While this gadget is used exclusively in home network , you can talk about his safety, but if you come with him to the company office, where he will find other devices and connect with them, a problem already arises. WiFi network Direct for Windows can be used as a proxy, through which data will be received from any of the devices on the network, and even corporate information. It will be difficult for any specialist to control all the networks created by such a device, which will gradually lead to the prohibition of this standard in enterprises. As a result, it can remain popular only for home use, or disappear altogether.
• High energy intensity. On the one hand, it can be used to transfer large amounts of data over considerable distances and at high speeds. However, modern gadgets are so quickly discharged that such an additional load may well become a burden.
• The increased range of such technology is not always an advantage. Your network can be hacked from a long distance, it can be wedged into and used against you.
• Using WiFi Direct involves the use of a special chip , since simple WiFi is not suitable for these purposes. At the moment, there are gadgets that are equipped with both chips, but they are not very many.

findings

The main disadvantage of introducing such a technology is that its support is provided by a separate chip, which differs from traditional WiFi. And since at the moment not many manufacturers include such modules in their devices, users will not want to buy new gadgets to use this technology.

How to use Wi-Fi Direct on Android, this is a very common question. The fact is that new technologies are constantly appearing in the world to simplify people's lives. One of them is Wi-Fi Direct. Since it is relatively new technology , few people know how to use it and why it is needed.

This is a new wireless standard that allows you to transfer information between several devices that support this technology. It is worth noting that you do not need an access point (router) to connect and transfer data. In other words, you can connect two or more devices directly. For example, you can connect two Android phones via Wi-Fi, if they support this technology.

It is worth noting that such a function is supported by almost every modern tablet and smartphone with Android OS. Of course, if we are talking about a budget gadget, then such functions may not be available.

And you do not need to configure anything.

Devices detect each other automatically. In addition to the usual gadgets, such as laptops, smartphones, tablets and so on, with help wifi Direct you can connect printers, scanners, Smart TV, digital photo frames, DVD-players, etc.

The main thing is that the device is equipped with this function.

Now you know what Wi-Fi Direct on Android phone . Now we can move on to the question of how this standard works.

How technology works

It is immediately worth noting that the data transfer rate at direct connection can reach 200-250 Mbps. Moreover, the radius of action with direct visibility is 200 meters and about 50-100 meters in buildings. The security level of such a communication channel is also worthy of special attention.

To work with this standard, the device must be equipped with an appropriate chip. They are of several types:

• Work in the 2.4 GHz band.
• In the range of 5 GHz.
• Operating in both ranges.

Wi-Fi Direct on Android has some very useful features. For example, Device Discovery, as well as Service Discovery. They allow smartphones and tablets (and other devices) to find each other and create a network among themselves. In this case, everything happens without your participation.

Moreover, these functions allow you to receive information about the capabilities of each gadget on the network. For example, when you want to transfer a video from a tablet to another device, only those that can receive and play this file will be displayed in the list of connected devices.

In fact, this could be a replacement for the old Bluetooth wireless standard. But today Wi-Fi Direct does not pose a threat to Bluetooth, as the technology is quite new and has certain disadvantages. One of them is a low level of protection. If you think Bluetooth is a more convenient way to transmit information, we have an article about how to data on.

The developers claim that this standard creates a fairly secure communication channel. However, in fact this is not so. As far as home use is concerned, there is no threat to personal data. But the situation is different if you use such a function in the office. Here, many users can join the network. Any Wi-Fi Direct for Windows can act as a proxy, and such a computer will receive all the information about any device on the network.

Set up Wi-Fi Direct on Android devices

For wifi settings Direct on Android go into options wireless network Wi-Fi and turn on the adapter.

You will automatically be taken to the search page for devices that also support this feature. It should be noted that on other gadgets it should also be included.

After your smartphone finds the desired connection, simply select it and confirm the connection. Further, the devices will be combined into one network (like Bluetooth). Now you can transfer files or stream sound and image to other devices. You do not need to configure anything else.

As you can see, everything is very simple and clear. Absolutely everyone will cope with this. Moreover, as mentioned above, each modern Android tablet Supports Wi-Fi Direct technology.

There is a Wi-Fi Direct application for Android - installing such a program will make using the new communication standard on your phone or tablet easier and more convenient.

In addition to simple data transfer, users can connect devices such as printers, televisions, audio systems, and so on through this standard. It is important that these devices are equipped with the appropriate chip.

Disadvantages of Wi-Fi Direct

Like any other technology, this wireless standard has its drawbacks:

• Clogged ether . The fact is that when organizing a regular network, all gadgets are connected to one access point. But in the case of Wi-Fi Direct, many separate connections are created. Moreover, participants can be both people (users of tablets, smartphones, laptops, etc.) and gadgets - printers, scanners, televisions, etc. As a result, there can be several tens or even hundreds of networks in one multi-storey building. Because of this, a real mess is created on the air. However, networks cannot be controlled. This, in turn, is reflected in the data rate.
• As mentioned above, a weak level of protection when it comes to connecting in office and public buildings.
• Energy intensity . On the one hand, this function is very useful and allows you to transfer large files at high speed. This significantly reduces the time spent on information transfer. But such a speed requires a significant expenditure of energy.

And given how much this will affect the autonomy of the gadget, it should be understood that you should not get carried away with this function. Smartphones and tablets are already quickly discharged. It is worth noting that Bluetooth consumes much less power.

• Long range . This would seem to be an advantage. On the one hand, it is. But on the other hand, attackers can take advantage of this. In addition, given that in this way we litter the ether, this range becomes more negative than positive quality.
• And finally, it’s worth remembering that to use this function, you need an appropriate chip . Of course, modern phones are equipped with both adapters (Wi-Fi and Wi-Di). But there are still quite a few devices that do not support this technology.

So now you know how to connect Android to Android via Wi-Fi directly. Despite the existing shortcomings, this connection is still widespread. And although it does not supplant Bluetooth, still its useful features simplify some tasks.

Wi-Fi Direct on Android: Video