What is wifi direct in the phone. Wi-Fi Direct on the phone what is it. How to enable Wi Fi Direct on Android and transfer files. Wireless antenna - the norm for modern technology

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In this article, we will tell you how to connect your phone to a Sony Bravia TV via Wifi, how to duplicate the display, as well as about the Wi-Fi Direct and Miracast technologies themselves. Modern Sony TVs have many useful options that significantly expand their functionality. This is the ability to display images from smartphones "over the air", without the need for wires - watch photos, videos, listen to music on a large scoreboard, use your smartphone as a remote control and much more. But in order to take full advantage of these functions, it is important to make the right settings.

How to connect your phone to a Sony Bravia TV via Wifi is described in the instruction manual. But, despite the detailed manual, many users encounter various difficulties during the installation process. For example, how to act if the smartphone is controlled not by Android, but by iOS, or what to do if the phone does not have Direct, where can I find the access code from WiF-i in TV, or why did everything follow the instructions, but nothing happens? These questions will also be discussed in this article.

About technologies

Wi-Fi-Direct is an option that allows you to combine mobile gadgets and TV into a single network over the air, bypassing a wired connection via a LAN or the World Wide Web. For their docking, there is no need to use additional equipment and consumables (such as routers, modems, cables, signal splitters and other telecommunications equipment). In this case, the channel bandwidth is identical to the bandwidth of 802.11 devices. In other words, the data exchange rate is the same as when using regular Wi-Fi.

Miracast is a new standard for wireless video transmission. It is based on Direct, but in comparison with it, the technology under consideration has a number of improvements and differences. When creating Miracast, the developers sought to simplify the process of organizing communication as much as possible. And they succeeded very well. Any owner of a smartphone, tablet, laptop and any other Miracast-enabled mobile gadget can play games on a tablet or smartphone and display an image on a large screen, display photos, multimedia content. The TV will display everything that happens on the display of the gadget. And all this "over the air", without wires and with just a few touches.

How to set up wifi on sony bravia tv

Activating Wi-Fi.Direct on TV is easy. To do this, you need to enable the "Built in Wi-Fi" checkbox, and then Wi-Fi-Dir ect.

You can do this in the following way:

  1. Pick up the remote control, find the HOME button on it and click on it. Note! Some users are faced with the fact that after performing this action, the TV freezes and nothing happens. In this case, you must perform a power reset or reboot, and then try again. If this does not help, try disconnecting all devices from the TV and doing a factory reset.
  2. Next, you need to get into the Advanced settings interface. To do this, follow this path: Settings - NETWORK&ACCESSORIES - NETWORK - Advanced settings.
  3. On the "Built-in WiFi" tab Built-in.Wi-Fi, put the icon in the On field.
  4. Also set Wi-Fi.Direct to On. Many users are also interested in how to find out the Wifi Direct password on a Sony Bravia TV. This can be done in the same menu in the Show Network (SSID)/Password dialog. When pressed, a window with the name of the network and a secret code will appear on the TV screen. This data is subsequently entered manually in the Wi-Fi debugs of the connected mobile device. If the connection was established successfully, a notification will appear on the monitor of the TV receiver.

Now you know how to connect Wi-Fi to a Sony Bravia TV. Immediately after carrying out the actions described above, the TV goes into synchronization mode and waits for binding. Here you can also set synchronization confirmation when trying to communicate with an unfamiliar device: on the remote control, click on the "Options" button and turn on the "Registration Notification" item.

How to connect iphone to sony bravia tv via wifi

  1. Activate Wi-Fi Direct on TV using the instructions above.
  2. Go to iPhone settings and select Wi.Fi, then Dir-ect-xx-BRAVIA.
  3. In the window that opens, enter the WPA key displayed on the display of the TV receiver, click Join.
  4. Wait while the devices are paired. This may take several minutes.
  5. After that, the settings window will be displayed. If there is a label for the SSID on the side of the iPhone, and a dash on the side of the Sony Bravia, then the docking is established.

If the relationship is not established, try again, after making sure that the password is entered correctly.

Iphone Screen Mirroring on Sony Bravia TV

Unfortunately, not all game and app developers provide AirPlay support for their products, as a result, not all streaming videos from applications or the Web are displayed on TV. You can get around this problem by duplicating content from your iPhone display to your TV screen. To do this, swipe up on the display, expand the control center and select AirPlay, then AppleTV.

How to connect phone to sony bravia tv

Now let's look at the features of connecting devices running Android OS to Sony TV.

As with the iPhone, the first step is to go to your device's settings. In it, find the WI-Fi menu and turn on the module, then click on the three dots, then on Wi-Fi-Direct.

After activating the Wi-Fi-.Direct button, the gadget will start searching for suitable devices. It will take some time. Upon completion, you will be presented with a list of all available communication gadgets. Select the SSID of your home theater from this list, enter a Password. The TV screen will ask you to connect a new device. We press "OK". Next, the TV receiver performs synchronization and then displays a message about successfully pairing.

Do not forget that no more than ten external gadgets can be synchronized with TV via Wi-Fi Direct. To see a list of gadgets working on your home network, you need to go to the direct debug menu on the TV, then press the “Options” button on the remote control and select “Display a list of devices”. If you want to delete any of the connections, click on the button located in the center of the remote control. You will see a dialog box "Are you sure you want to remove from the list." Use the arrows on the remote control to move to the word "Yes", then click on the center button.

How to connect the Internet to a Sony Bravia TV via Wi-Fi if the phone does not have direct? Everything is simple. On the TV, enter the Wi-Fi-Direct debugging mode, press the "Options" key on the remote control and select "Manual". In the window that opens, select "Other methods". A window will appear on the monitor that displays the name of the network and the password required to log in. This name must be found in the Wi.Fi settings menu of the smartphone and write Password.

How to Duplicate Phone Screen on Sony Bravia TV

You can install Screen Mirroring only if both the TV receiver and the mobile device support Miracast technology. As already noted, a characteristic feature of Miracast is the simplification of technology. And here everything is really very simple.

Depending on the version of Android and the smartphone model, the steps may be slightly different. In the version of Android 6.0, to do this, go to the settings - "networks and communications" - "wireless display". Activate the mode. The smartphone will start searching for available equipment, after which your TV will appear in the list. Click on it - the contact will be automatically established, and the image from your mobile device will appear on the TV screen.

If the connection was not established automatically, do the following: click on the "Input" switch, which is located on the remote control, then "duplication", then turn on the wireless display from your smartphone.

tell friends

Most likely, you use Wi-Fi every day at home or in a cafe, this technology is used by many people, or Bluetooth (sometimes just a necessary type of connection for a couple of devices). But what if you take the best of them and combine them? It turns out that this is implemented in Wi-Fi Direct. This article will explain what Wi-fi Direct is and how this technology works.

From Wi-Fi to Wi-Fi Direct

Most likely, everyone already knows what Wi-Fi is, if not technical aspects, then at a subconscious level for sure. This wireless communication technology has a wide range of applications, but the most used is Internet access.

Everyday use of Wi-Fi consists of connecting to a router to access the Internet. The router is a physical device that creates an access point, the existence of which can be verified in your smartphone or computer in the list of available connections. When connecting to the network, you need to enter a password and everything is ready, access to the network has been received.

From the history of Wi-Fi Direct

Wireless data transmission of nearby devices, without the use of third-party equipment, is not a novelty for a long time. One of the first and widespread solutions was the introduction of Bluetooth, which appeared in 1998. Bluetooth is a wireless communication standard for connecting peripherals to a computer (wireless mice and keyboards) or telephone (headsets). Such devices do not require fast data transfer. Bluetooth is not a high-speed communication technology by today's standards, and there are connection problems too. Read what Bluetooth is and how it works.

The difference between Wi-Fi and Bluetooth is that this connection is faster and easier to set up. It is because of these qualities that Wi-Fi consists of Wi-Fi Direct - a technology for fast and wireless communication and file transfer between various devices.

The first major company to use Wi-Fi Direct was Intel. The new standard was introduced by them in 2008 in the Centrino 2 platform. Two years later, in October 2010, major players in the network industry market: Marvell, Atheros, Broadcom, Ralink and Realtek, began to release their products. It is quite possible that a Wi-Fi adapter from one of these manufacturers is installed on your computer.

Google's Android OS product received direct support for Wi-Fi Direct from version 4.0, and Xbox one in 2013. The Windows family has supported the standard since Windows 8 on PC.

Wi-Fi Direct, how does it work?

The main idea in the development of Wi-Fi Direct was the ease of setup, the possibility of its support by all types of devices at a data transfer rate equal to the usual Wi-Fi.

It works quite simply: one device is detected by another, in exactly the same way as it detected a wireless network, it connects and the devices are connected. There is no need to adjust visibility, use long numbers, or put up with f issues. Another advantage is the need to support Wi-Fi Direct only one of the connected devices.

When connecting two devices using Wi-Fi Direct, one of them creates an access point, like a router, and the other device connects to it. Features depend on the connected device: you can print to a wireless printer, the photo frame can receive and use photos, send files from your computer to your phone, or play music and movies on your TV. Often, an Android device is used to distribute mobile Internet to other devices, but it will not work to connect to a Wi-Fi network at the same time, because the device is already used as an access point. A positive feature of Wi-Fi Direct is the absence of passwords, the connection is encrypted by WPS (Wi-Fi Protected Setup).

Now you know what Wi-Fi Direct is, and thanks to its easy installation, long range and high data transfer rate, Wi-Fi Direct has an advantage over Bluetooth in wireless data transmission. Perhaps in the future, Wi-Fi Direct will be able to replace Bluetooth, because it simultaneously eliminates both the extra standard and the hardware inside the device. This technology is newer, and replacing one standard with another can take quite a long time.

In the near future, Wi-Fi Direct, originally known as Wi-Fi Peer-to-Peer, will become one of the main ways to wirelessly transfer data between devices. You can learn about what Wi-Fi Direct is and how this technology works from this material.

Wi-Fi Direct is a new wireless data transfer standard that allows devices to connect directly to each other without an additional intermediate link in the form of a router.

Now, when you wirelessly connect a printer to a computer or a phone to a laptop, it is usually impossible to do this directly. This requires another connecting element in the form of a router.

Wi-Fi Direct is designed to remove this limitation and allow devices to connect directly.

WiFi Direct: Au revoir Bluetooth

Whether Wi-Fi Direct will be able to completely replace Bluetooth is difficult to say now with 100% certainty, but there are all the prerequisites for this. The new derivative of Wi-Fi fared much better than Bluetooth in terms of transmission speed and range, as well as data security and ease of connection.

Getting rid of unnecessary wireless interface in mobile devices will benefit both manufacturers and users: devices will become slightly smaller, lighter, cheaper, and easier to manufacture, and instead of two interfaces, users will only have to monitor the switching of one.

The new technology can be built into almost any device, including those that traditionally work via Bluetooth (wireless keyboards, mice, headsets). To increase autonomy, new power saving modes have also been developed specifically for Wi-Fi Direct.

Specifications unchanged

At the hardware level, Wi-Fi Direct chips will differ little from conventional Wi-Fi modules. It follows from this that the technical characteristics of Wi-Fi Direct will be almost the same as those of modern Wi-Fi networks. The new devices will even be backward compatible with most Wi-Fi devices available (regardless of the specific version of 802.11 a/b/g/n).

Most Wi-Fi Direct chips should operate at 2.4 GHz and therefore will work seamlessly with earlier versions of the 802.11 standard (up to version n, with the exception of 802.11a), and in some cases will also be compatible with 802.11n.

Some of the Wi-Fi Direct modules will operate at 5 GHz and therefore be able to connect to 802.11a and n networks. As you can guess from the information currently available, most chips will support both frequency ranges (2.4 and 5 GHz).

Certified Wi-Fi Direct devices will be able to support the same data transfer rate as conventional Wi-Fi chips, that is, about 250 Mbps. Apparently, we are talking about chips based on 802.11n, and as soon as the first Wi-Fi Direct devices on 802.11ac appear, the speed will increase several times.

The maximum speed will depend on the transmission medium, the number of connected devices and their specific characteristics.

Under ideal conditions, as with conventional Wi-Fi, the new devices will be able to connect with each other at a distance of up to 200 meters.

Wi-Fi Direct is not necessarily a one-to-one connection

The fact that Wi-Fi Direct will most often be used to connect two devices together does not mean that the standard's capabilities will be limited to this. As part of the new technology, it will be possible to create entire groups of interconnected devices (Wi-Fi Direct Group).

Most often, such group configurations, apparently, will be used for multiplayer games. Players in this case will not need access to the Internet, mobile or any other coverage. Being literally in the desert, they can create a small wireless network if their devices are in range of each other.

However, not all network members must support Wi-Fi Direct. One Wi-Fi Direct chip is enough, which will take on the role of traffic coordinator between devices with conventional Wi-Fi modules on board.

It should be noted that in some cases it will not be possible to create groups, since some devices are initially created only for one-on-one connections. This does not contradict the specifications of the standard, in which the ability to connect to multiple devices at once is optional.

How many devices can be grouped or connected to one device depends on the specific conditions. Typically, this number will be slightly lower than with a normal hotspot.

It is worth adding that despite the relationship between Wi-Fi and Wi-Fi Direct, these are still slightly different technologies, which is once again confirmed by the following fact. Certified devices (from the context it seems that most) will be able to connect to either Wi-Fi Direct groups or regular Wi-Fi hotspots, and only a few of them will be able to do both at the same time. For example, a laptop can be connected via a router to the Internet and at the same time be part of a Wi-Fi Direct group to distribute this Internet to other group members.

Connecting is as easy as saying yes

The procedure for connecting Wi-Fi Direct devices will be based on Wi-Fi Protected Setup and, as a rule, will consist in pressing a single button.

If two users want to connect their devices to transfer files, then one of them will only need to send an invitation by selecting another device in the list of discovered ones, and the second - to confirm the connection.

How does discovery work?

Wi-Fi Direct includes two useful features: Wi-Fi Direct Device Discovery and Service Discovery. Thus, devices will be able not only to find each other without additional actions on the part of the user, but also immediately learn about the opportunities (services) provided.

For example, if a user has discovered several available devices and wants to send a photo, then Service Discovery will filter out all unnecessary devices (for example, audio systems) and leave only compatible peripherals (photo frames, TVs, other smartphones, etc.).

All this happens before connection, so that the user does not have to sort through several devices in turn in search of suitable opportunities.

Protocols such as UPnP and Bonjour also provided similar mechanisms for discovering other devices, but were incompatible with each other and remained little used. At the same time, Wi-Fi Direct should become the new single standard for finding, connecting and transmitting information.

Who is the leader in the group?

If there are several devices in the Wi-Fi Direct group, then the decision on who to give the role of coordinator depends on several factors. For example, on the autonomy of devices (preference will be given to a laptop powered by a network, rather than a smartphone), on the number of connections that the device can handle, on the number of services provided, and on computing power.

In principle, any certified device can become the main one in the group, however, more powerful and advanced devices (laptops, smartphones, handheld consoles) will always have priority over such peripherals as printers, digital cameras, etc.

Degree of access

The amount of information available for viewing on another Wi-Fi Direct device will directly depend on its purpose.

If we consider the connection of two phones, then, in principle, a situation is possible when a specific program will provide access to all or most of the information, but as a rule, it will take on only a certain, small range of tasks. For example, multiplayer games can only connect several players together, programs for transferring video or photos will only provide access to these multimedia files, but will hide the file system on the device.

Wi-Fi Direct in business

Wi-Fi Direct is primarily aimed at ordinary users, but with the fact that devices that can benefit from the new technology are widely used in offices, over time this standard will gain popularity at work. For example, to transfer videos, images, presentations from a phone to a projector, or to print files on a printer.

Safety

To ensure security, all data sent over Wi-Fi Direct will be encrypted using WPA2, a secure method that has proven itself well in classic Wi-Fi.

At the same time, all devices that support dual connection (to regular Wi-Fi devices and Wi-Fi Direct groups) will work with data separately, providing additional security.

In the event that several devices from a Wi-Fi Direct group access the Internet through an intermediary connected to an access point that is not secure or protected by a weaker encryption method, communication between Wi-Fi Direct devices will still occur using WPA2, despite the fact that this information reached the transfer station in a less secure way.

Will Wi-Fi Direct replace regular Wi-Fi?

Although Wi-Fi Direct can replace access points in some cases, it will not completely replace conventional Wi-Fi, since these technologies were created for two different purposes.

Classic Wi-Fi is primarily intended for Internet access and connection of stationary devices, while Wi-Fi Direct will be used primarily for connecting two or more devices in any random place where there are no external connection points.

In many cases, access points are also needed for the reason that, as a rule, they support additional features: connecting to the Network via an Ethernet port, the presence of hardware firewalls, advanced network capabilities management, etc.

Prevalence

The first Wi-Fi Direct devices appeared back in 2010, but we can really talk about the expansion of the new technology only after the release of Android 4.0.

Basically, OS alone is not enough. Android 4.0 can even be installed on some older devices, but Wi-Fi Direct support will not magically appear on them. On the other hand, there are other examples as well.

With the help of special improvements by the phone developer, Wi-Fi Direct can be implemented on Android 2.3. However, this situation is not common, and given the age of the OS, it is no longer worth waiting for a large number of Gingerbread smartphones with Wi-Fi Direct.

Since dedicated Wi-Fi Direct peripherals do not yet exist, this technology is now mainly used to transfer files between Android smartphones. To do this, you need to activate Wi-Fi Direct in the phone settings, select a file or any other data and use the Share or Send function, where, in addition to the usual transfer methods, Wi-Fi Direct will also be present.

There are still very few programs for working with Wi-Fi Direct on Google Play, or rather, only one, and it appeared literally on the eve of writing this material. The utility is called WiFi Shoot! and is designed to transfer photos and videos between devices. It is not yet possible to send other types of files using it.

A peculiar version of Wi-Fi Direct has been used in Apple devices for some time. AirDrop technology, although not compatible with Wi-Fi Direct, was introduced by Apple as its counterpart simultaneously with the release of OS X Lion on July 1, 2011.

AirDrop is designed for direct file transfer over Wi-Fi, without prior configuration and connection to a classic wireless Wi-Fi network. The technology is supported on most of the company's computers and laptops released since 2008.

One of the first non-IT companies that want to use Wi-Fi Direct in the near future is General Motors. Developing the idea of ​​smart cars, the company plans to build detectors of Wi-Fi Direct devices into cars, and in the event of a dangerous approach, give a warning signal (for example, to a gaping cyclist in the next lane) or automatically slow down. However, the specific ways in which the program behaves are still open.

In-Stat estimates that the expansion of Wi-Fi Direct will end in 2014, when virtually all computers and portable devices will support the new technology.

Articles and Lifehacks

Previously, only Bluetooth was used for fast file transfer, but today there is technology such as Wi-Fi Direct, which is a good alternative to Bluetooth. So what is wifi direct on a phone?

What is this technology

Anyone who has at least once encountered the Wi-Fi setup at home, without using the default settings, knows about the “ad hoc” mode, designed to allow two computers to connect to each other without the help of a router.

This mode is needed in order to be able to transfer data from one computer to another without any problems. What does Wi-Fi Direct have to do with it?

And despite the fact that Wi-Fi Direct is an “ad hoc” mode adapted specifically for mobile devices, because, as you know, transferring files via Bluetooth can take a significant amount of time when the new technology allows you to quickly transfer a pack of new files from phone to phone. songs or photos.

How this technology works

  • Wi-Fi Direct requires two modern mobile devices, each of which must be equipped with a Wi-Fi module.
  • For fast data transfer, each device will need to create its own access point, to which the other device can connect.
  • Moreover, the phone will deal with the creation of the point "independently", that is, the user will not have to enter addresses, invent keys or do any other complicated things.
  • The owner of the phone will simply have to press a few buttons and enter a pin code that will make the connection between the phones secure. After all the manipulations done, the devices will be able to exchange various data with each other without any problems.
In conclusion, wifi direct was designed specifically to make data exchange between two mobile phones faster, but can this technology completely replace Bluetooth?

It's a question! Although there are prerequisites for this, because wifi direct not only has a high data transfer rate, but also makes it possible to connect several others to one device at once, which would be almost impossible to do with Bluetooth.

Every year there are more and more new technologies that are designed to improve and make our lives easier. One of them is WiFi Direct. What it is, it will become clear if we take a closer look at 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 the reliability of the network is ensured by a higher degree of channel protection. To build a network on this basis, a router is simply not needed.

Key Features

Worth a closer look at WiFi Direct. What is this? This is a new information transfer standard that allows several gadgets to connect to each other without the use of 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 a certification. Currently, two devices can only connect wirelessly using a router as an intermediate link. However, a router is no longer required if you use WiFi Direct. What it is, and how such a method works, is discussed here.

This method allows you to connect several gadgets at the same time. In addition to devices such as standard laptops, smartphones and phones, digital photo frames, scanners, printers, video recorders, etc. can be connected to the network, and here the main condition is the presence of an appropriate chip.

As it was before?

Home networks have already 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 have the opinion that this standard will soon completely replace 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 also disadvantages that are quite significant.

Characteristics

WiFi Direct chips are worth considering. How to use this technology will become clear later. Elements can be one of two types: for the range of 2.4 GHz, 5 GHz, 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 connect to a network without any human intervention, 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 the list of receiving devices will contain only those that are able to accept 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 presented in search of a suitable gadget, but only to select the desired one from those that are displayed.

Difference from other types

A typical 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 the power, autonomy, and functionality. So, the list of preferences looks like this: laptops, tablets, smartphones, consoles, and after them come peripherals, such as printers, audio systems, digital cameras and others.

Flaws

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

Main disadvantages

  • Ether clutter. When a 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 tens or hundreds of networks will operate in a multi-storey building, creating a real mess on the air, since they all broadcast with different powers and frequencies. Such networks cannot be controlled, which is why they create a real clutter of the air.
  • Poor network security. While manufacturers of WiFi Direct Android devices talk about better security of such networks compared to Bluetooth, in fact, everything is different. As long as such a gadget is used exclusively on the home network, we can talk about its security, but as soon as you come with it to the company's office, where it will find other devices and connect to them, a problem already arises. WiFi Direct for Windows can be used as a proxy to receive data 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 a ban on this standard in enterprises. As a result, it may remain popular only for home use, or disappear altogether.
  • High energy consumption. On the one hand, it can be used to transfer large amounts of data over long distances and at high speeds. However, modern gadgets discharge so quickly that such an additional load may well become a burden.
  • Increased range of such technology is not always an advantage. Your network can be hacked from a great distance, they can break into it and use it 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 there are not very many of them.

conclusions

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