Wi-Fi Direct™

Wi-Fi Direct®

Wi-Fi Direct™ (synonym for Wi-Fi P2P (Peer-to-Peer)) is a technology that allows you to find nearby Wi-Fi Direct™ devices and form a Wi-Fi Direct™ group to communicate over a peer-to-peer link without wireless access points (base stations) in the infrastructure mode.

Wi-Fi Direct® (synonym for Wi-Fi P2P (Peer-to-Peer)) is a technology that allows you to find nearby Wi-Fi Direct devices and form a Wi-Fi Direct group to communicate over a peer-to-peer link without wireless access points (base stations) in the infrastructure mode.

This feature is supported in mobile applications only.

In a Wi-Fi Direct™ group, the group owner works as an access point in the Wi-Fi infrastructure mode and the other devices join the group as clients. A group can be created either by negotiation between 2 devices or in an autonomous mode by a single group owner device. In a negotiation-based group creation, 2 devices compete based on the group owner intent value and the higher intent device becomes a group owner, while the other device becomes a group client. In an autonomous group creation, a device becomes a group owner by itself without any group client.

In a Wi-Fi Direct group, the group owner works as an access point in the Wi-Fi infrastructure mode and the other devices join the group as clients. A group can be created either by negotiation between 2 devices or in an autonomous mode by a single group owner device. In a negotiation-based group creation, 2 devices compete based on the group owner intent value and the higher intent device becomes a group owner, while the other device becomes a group client. In an autonomous group creation, a device becomes a group owner by itself without any group client.

A Wi-Fi Direct™ device can join an existing group by associating itself with the group owner, as long as the allowed number of clients is not exceeded.

A Wi-Fi Direct device can join an existing group by associating itself with the group owner, as long as the allowed number of clients is not exceeded.

The main features of the Wi-Fi Direct™ API include:

The main features of the Wi-Fi Direct API include:

Activating Wi-Fi Direct™ -
You can activate a local Wi-Fi Direct™ device and deactivate it.
Getting the Wi-Fi Direct™ peer device information -
You can discover Wi-Fi Direct™ peer devices and show Wi-Fi Direct™ peer device information.
Connecting to a specific Wi-Fi Direct™ peer device -
You can connect to a specific Wi-Fi Direct™ device and disconnect from a specific Wi-Fi Direct™ device.
Managing Wi-Fi Direct™ groups -
You can create a Wi-Fi Direct™ group and manage the group.
Activating Wi-Fi Direct +
You can activate a local Wi-Fi Direct device and deactivate it.
Getting the Wi-Fi Direct peer device information +
You can discover Wi-Fi Direct peer devices and show Wi-Fi Direct peer device information.
Connecting to a specific Wi-Fi Direct peer device +
You can connect to a specific Wi-Fi Direct device and disconnect from a specific Wi-Fi Direct device.
Managing Wi-Fi Direct groups +
You can create a Wi-Fi Direct group and manage the group.

Note - You can test the Wi-Fi Direct™ functionality only on target devices. The emulator does not support this feature currently. + You can test the Wi-Fi Direct functionality only on target devices. The emulator does not support this feature currently.

Prerequisites

To enable your application to use the Wi-Fi Direct™ functionality:

To enable your application to use the Wi-Fi Direct functionality:

To use the Wi-Fi Direct API, the application has to request permission by adding the following privilege to the tizen-manifest.xml file:
@@ -96,7 +96,7 @@ error_code = wifi_direct_initialize();
To get the Wi-Fi Direct™ activation and deactivation events, set up the wifi_direct_device_state_changed_cb() callback:
+
To get the Wi-Fi Direct activation and deactivation events, set up the wifi_direct_device_state_changed_cb() callback:
```
 void
@@ -108,7 +108,7 @@ error_code = wifi_direct_set_device_state_changed_cb(device_state_changed_cb, NU
 
```
To get the Wi-Fi Direct™ discovery events, set up the wifi_direct_discovery_state_changed_cb() callback:
+

To get the Wi-Fi Direct discovery events, set up the wifi_direct_discovery_state_changed_cb() callback:

 void
@@ -121,7 +121,7 @@ error_code = wifi_direct_set_discovery_state_changed_cb(discovery_state_changed_

To get Wi-Fi Direct™ connection events, set up the wifi_direct_connection_state_changed_cb() callback:
+

To get Wi-Fi Direct connection events, set up the wifi_direct_connection_state_changed_cb() callback:

 void
@@ -134,13 +134,13 @@ error_code = wifi_direct_set_connection_state_changed_cb(connection_state_change

Activating Wi-Fi Direct™

Activating Wi-Fi Direct

To activate a Wi-Fi Direct™ local device and to check the Wi-Fi Direct™ local device state:

To activate a Wi-Fi Direct local device and to check the Wi-Fi Direct local device state:

Activate a Wi-Fi Direct™ local device -
Define the device_state_changed_cb() callback function, which is invoked whenever a Wi-Fi Direct™ local device activates or deactivates. In the following example, an information message is printed in the console.
+
1. Activate a Wi-Fi Direct local device +
  Define the device_state_changed_cb() callback function, which is invoked whenever a Wi-Fi Direct local device activates or deactivates. In the following example, an information message is printed in the console.
```
 static void
@@ -149,34 +149,34 @@ device_state_changed_cb(wifi_direct_error_e error_code,
                         void *user_data)
 {
     if (device_state == WIFI_DIRECT_DEVICE_STATE_ACTIVATED) {
-        printf("Activate Wi-Fi Direct™ device!\n");
+        printf("Activate Wi-Fi Direct device!\n");
         /* Handle the event */
     } else if (device_state == WIFI_DIRECT_DEVICE_STATE_DEACTIVATED) {
-        printf("Deactivate Wi-Fi Direct™ device!\n");
+        printf("Deactivate Wi-Fi Direct device!\n");
         /* Handle the event */
     }
 }
 
```
2. Switch on the Wi-Fi Direct™ local device with the wifi_direct_activate() function.
  +
3. Switch on the Wi-Fi Direct local device with the wifi_direct_activate() function.
  
  After the wifi_direct_activate() function is completed, the wifi_direct_device_state_changed_cb() callback is invoked.
```
 error_code = wifi_activate(NULL);
 
```
4. Check the Wi-Fi Direct™ state. -
  You can check the Wi-Fi Direct™ local device state using the wifi_direct_get_state() function:
  +
5. Check the Wi-Fi Direct state. +
  You can check the Wi-Fi Direct local device state using the wifi_direct_get_state() function:
```
 wifi_direct_state_e state = WIFI_DIRECT_STATE_DEACTIVATED;
 wifi_direct_get_state(&state);
-printf("Wi-Fi Direct™ state: %d.\n", state);
+printf("Wi-Fi Direct state: %d.\n", state);
 
```
-
Getting the Wi-Fi Direct™ Peer Device Information
+
Getting the Wi-Fi Direct Peer Device Information
-
To discover nearby Wi-Fi Direct™ peer devices, and after discovering, to print the results of the discovery, such as Wi-Fi Direct™ peer device information:
+
To discover nearby Wi-Fi Direct peer devices, and after discovering, to print the results of the discovery, such as Wi-Fi Direct peer device information:
1. Define a callback function for the discovery, to be called when the discovery state is changed: @@ -212,7 +212,7 @@ discovery_state_changed_cb(wifi_direct_error_e error_code,
2. Start the discovery by scanning for nearby devices. -
  When the Wi-Fi Direct™ discovery state changes, the wifi_direct_discovery_state_changed_cb() function is called.
  +
  When the Wi-Fi Direct discovery state changes, the wifi_direct_discovery_state_changed_cb() function is called.
```
 wifi_direct_start_discovery(false, 0);
@@ -220,7 +220,7 @@ wifi_direct_start_discovery(false, 0);
 
 Show the search results.
 
-Show the discovery result using the wifi_direct_discovered_peer_cb() callback, which is invoked by the wifi_direct_foreach_discovered_peers() function. In the following example, the Wi-Fi Direct™ peer device information is printed.
+Show the discovery result using the wifi_direct_discovered_peer_cb() callback, which is invoked by the wifi_direct_foreach_discovered_peers() function. In the following example, the Wi-Fi Direct peer device information is printed.
 
  bool
@@ -242,13 +242,13 @@ int rv = wifi_direct_foreach_discovered_peers(discovered_peer_cb, NULL);
 
 You can also get other information, including the connection state, device type, Wi-Fi display information, and WPS type.
```
-
Connecting to a Specific Wi-Fi Direct™ Peer Device
+
Connecting to a Specific Wi-Fi Direct Peer Device

To connect to a specific device:
1. Define the callback function for the connection state. -
  The connection event received from the Wi-Fi Direct™ framework invokes a callback. The following example defines a connection_state_changed_cb() callback to handle all Wi-Fi Direct™ connection events.
  +
  The connection event received from the Wi-Fi Direct framework invokes a callback. The following example defines a connection_state_changed_cb() callback to handle all Wi-Fi Direct connection events.
```
 static void
@@ -308,9 +308,9 @@ connection_state_changed_cb(wifi_direct_error_e error_code,
 }
 
```
2. Connect with a Wi-Fi Direct™ peer device. +
3. Connect with a Wi-Fi Direct peer device. -
  Check whether Wi-Fi Direct™ is activated using the wifi_direct_get_state() function, and then get the specific device address.
  +
  Check whether Wi-Fi Direct is activated using the wifi_direct_get_state() function, and then get the specific device address.
  
  You can obtain the address directly from the user (as in the following example), or by calling the wifi_direct_foreach_discovered_peers() function to the address through the device discovery process.
```
@@ -348,7 +348,7 @@ if (error_code != WIFI_DIRECT_ERROR_NONE) {
 printf("Connection step finished\n");
 
```
4. When the connection is no longer needed, disconnect from the Wi-Fi Direct™ device: +
5. When the connection is no longer needed, disconnect from the Wi-Fi Direct device:
```
 char * mac_address = NULL;
@@ -385,11 +385,11 @@ if (error_code != WIFI_DIRECT_ERROR_NONE) {
 printf("Disconnection step finished\n");
 
```
-
Managing Wi-Fi Direct™ Groups
+
Managing Wi-Fi Direct Groups
-
To create an autonomous Wi-Fi Direct™ group and to make your device the autonomous group owner:
+
To create an autonomous Wi-Fi Direct group and to make your device the autonomous group owner:
-
1. Create a Wi-Fi Direct™ group and become a group owner: +
  1. Create a Wi-Fi Direct group and become a group owner:
```
 wifi_direct_state_e state;
@@ -409,7 +409,7 @@ if (error_code != WIFI_DIRECT_ERROR_NONE) {
 printf("Connection step finished\n");
 
```
  2. When Wi-Fi Direct ™ connections or group is no longer needed, destroy all connections and the group: +
  3. When Wi-Fi Direct connections or group is no longer needed, destroy all connections and the group:
```
 wifi_direct_state_e state;
@@ -429,9 +429,9 @@ if (error_code != WIFI_DIRECT_ERROR_NONE) {
 printf("Disconnection step finished\n");
 
```
  -
  Deactivating Wi-Fi Direct™
  +
  Deactivating Wi-Fi Direct
  -
  To deactivate Wi-Fi Direct™ when it is no longer needed (or the application is exiting):
  +
  To deactivate Wi-Fi Direct when it is no longer needed (or the application is exiting):
  1. Power off the local device using the wifi_direct_deactivate() function:
    @@ -454,7 +454,7 @@ wifi_direct_unset_connection_state_changed_cb(NULL);
  2. -
    Release Wi-Fi Direct™:
    +
    Release Wi-Fi Direct:
```
 wifi_direct_deinitialize();
 
```
    @@ -483,4 +483,4 @@ var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga - \ No newline at end of file + diff --git a/org.tizen.guides/html/native/device/system_n.htm b/org.tizen.guides/html/native/device/system_n.htm index d392063..239f21d 100644 --- a/org.tizen.guides/html/native/device/system_n.htm +++ b/org.tizen.guides/html/native/device/system_n.htm @@ -849,15 +849,15 @@ the Tizen reference implementation. http://tizen.org/feature/network.wifi.direct bool - The platform returns true for this key and the http://tizen.org/feature/network.wifi key, if the device supports Wi-Fi Direct™. + The platform returns true for this key and the http://tizen.org/feature/network.wifi key, if the device supports Wi-Fi Direct®. http://tizen.org/feature/network.wifi.direct.display bool - The platform returns true for this key and the http://tizen.org/feature/network.wifi key, if the device supports Wi-Fi Direct™ display feature. + The platform returns true for this key and the http://tizen.org/feature/network.wifi key, if the device supports Wi-Fi Direct display feature. http://tizen.org/feature/network.wifi.direct.service_discovery bool - The platform returns true for this key and the http://tizen.org/feature/network.wifi key, if the device supports Wi-Fi Direct™ service discovery. + The platform returns true for this key and the http://tizen.org/feature/network.wifi key, if the device supports Wi-Fi Direct service discovery. http://tizen.org/feature/network.wifi.tdls bool diff --git a/org.tizen.guides/index.xml b/org.tizen.guides/index.xml index 740e132..baee6a3 100644 --- a/org.tizen.guides/index.xml +++ b/org.tizen.guides/index.xml @@ -289,7 +289,7 @@ - + diff --git a/org.tizen.studio/html/download/1_0_1_release_notes.htm b/org.tizen.studio/html/download/1_0_1_release_notes.htm index 0109ae5..cb6a09b 100644 --- a/org.tizen.studio/html/download/1_0_1_release_notes.htm +++ b/org.tizen.studio/html/download/1_0_1_release_notes.htm @@ -163,7 +163,7 @@
  3. Ubuntu sometimes stops responding for a few seconds after closing the Emulator Manager. This issue is related to an IBus (Intelligent Input Bus) bug. When the issue occurs, restart the ibus-daemon by entering the ibus-daemon âdrx command at the command prompt, and use another framework, such as uim and fcitx, for multilingual input.
  4. To use the Tizen emulator, install an Intel VTx supported by the CPU, and the latest version of the graphic card driver provided by the vendor. Check the prerequisites for the Tizen emulator from Prerequisites for the Tizen Studio.
    - If the host machine is using Nvidia Optimus™ technology on either Ubuntu or Windows®, you must set the Tizen emulator to run with your Nvidia® graphics card. In case of Ubuntu, check the bumblebee project (https://wiki.ubuntu.com/Bumblebee). In case of Windows®, select "High Speed NVIDIA Processor" as "Preferred Graphics processor" in the Nvidia® control panel.
    - If the host machine is using NVIDIA® Optimus® technology on either Ubuntu or Windows®, you must set the Tizen emulator to run with your NVIDIA graphics card. In case of Ubuntu, check the bumblebee project (https://wiki.ubuntu.com/Bumblebee). In case of Windows®, select "High Speed NVIDIA Processor" as "Preferred Graphics processor" in the NVIDIA control panel.
    - On Ubuntu, if the graphics driver is out-of-date, your Ubuntu desktop session can be occasionally logged out when launching the Emulator Manager, or the emulator skin can be drawn improperly. Check the prerequisites and upgrade to the latest graphics driver.
  5. Increase the user area of the virtual memory in the system to 3 GB by entering the bcdedit /set increaseuserva 3072 command on the console with administrator rights (Windows® 7 only), and reboot.

P2P Connections with Wi-Fi Direct™

P2P Connections with Wi-Fi Direct®

This feature is supported in mobile applications only.

In a Wi-Fi Direct™ group, the group owner works as an access point (AP) in the Wi-Fi infrastructure mode and the other devices join the group as clients. A group can be created by:

In a Wi-Fi Direct group, the group owner works as an access point (AP) in the Wi-Fi infrastructure mode and the other devices join the group as clients. A group can be created by:

Negotiation between 2 devices
In a negotiation-based group creation, 2 devices compete based on the group owner intent value and the higher intent device becomes a group owner, while the other device becomes a group client.
@@ -51,13 +51,13 @@
In an autonomous group creation, a device becomes a group owner by itself without any group client.

The following sections demonstrate how to find and connect to nearby devices using Wi-Fi Direct™.

The following sections demonstrate how to find and connect to nearby devices using Wi-Fi Direct.

Required Privileges and Features

Applications that use Wi-Fi Direct™ must declare the required privileges in the tizen-manifest.xml file. For more information on the Tizen privileges, see Security and API Privileges.

Applications that use Wi-Fi Direct must declare the required privileges in the tizen-manifest.xml file. For more information on the Tizen privileges, see Security and API Privileges.

To perform the Wi-Fi Direct™ operations, the application manifest must include the following privileges:

To perform the Wi-Fi Direct operations, the application manifest must include the following privileges:

 <privileges>
@@ -69,10 +69,10 @@
 
       
         Note
-        Wi-Fi Direct™ does not require an Internet connection, but it needs the http://tizen.org/privilege/internet privilege because it uses standard sockets.
+        Wi-Fi Direct does not require an Internet connection, but it needs the http://tizen.org/privilege/internet privilege because it uses standard sockets.
     
 
-To perform the Wi-Fi Direct™ operations, the device must support the following features:
+To perform the Wi-Fi Direct operations, the device must support the following features:
 
 http://tizen.org/feature/network.wifi
 http://tizen.org/feature/network.wifi.direct
@@ -80,18 +80,18 @@
 http://tizen.org/feature/network.wifi.direct.service_discovery
 
 
-Wi-Fi Direct™ Settings
+Wi-Fi Direct Settings
 
-To use Wi-Fi P2P, you must confirm that 2 devices are connected through Wi-Fi Direct™. To see the settings of Wi-Fi Direct™, go to Settings > Wi-Fi > Wi-Fi Direct in the device. To listen to the Wi-Fi Direct™ states, set a callback function.
+To use Wi-Fi P2P, you must confirm that 2 devices are connected through Wi-Fi Direct. To see the Wi-Fi Direct settings, go to Settings > Wi-Fi > Wi-Fi Direct on the device. To listen for the Wi-Fi Direct states, set a callback function.
 
-Implementing Wi-Fi Direct™
+Implementing Wi-Fi Direct
 
-To use Wi-Fi P2P, you must activate Wi-Fi Direct™ and start the service. If you want to listen to Wi-Fi Direct™ states, you must also set a callback function.
+To use Wi-Fi P2P, you must activate Wi-Fi Direct and start the service. If you want to listen to Wi-Fi Direct states, you must also set a callback function.
 
-To implement a Wi-Fi Direct™ connection:
+To implement a Wi-Fi Direct connection:
 
 
-Initialize Wi-Fi Direct™ to use all Wi-Fi Direct™ functions:
+
Initialize Wi-Fi Direct to use all Wi-Fi Direct functions:
 
  #include <wifi_direct.h>
@@ -100,28 +100,31 @@ int error_code;
 error_code = wifi_direct_initialize();
 
 
-To monitor the state of several events, the application can set state changed callbacks using the wifi_direct_set_device_state_changed_cb(), discovery_state_changed_cb(), and wifi_direct_set_connection_state_changed_cb() functions after initializing Wi-Fi Direct™.
+To monitor the state of several events, the application can set state changed callbacks using the wifi_direct_set_device_state_changed_cb(), discovery_state_changed_cb(), and wifi_direct_set_connection_state_changed_cb() functions after initializing Wi-Fi Direct.
 
 
-Activate Wi-Fi Direct™.
+
Activate Wi-Fi Direct.
 
-Define the device_state_changed_cb() callback function, which is invoked whenever a Wi-Fi Direct™ local device activates or deactivates:
+Define the device_state_changed_cb() callback function, which is invoked whenever a Wi-Fi Direct local device activates or deactivates:
 
 -/* Get the Wi-Fi Direct™ activation and deactivation events in device_state_changed_cb() callback */
+/*
+   Get the Wi-Fi Direct activation and deactivation events
+   in device_state_changed_cb() callback
+*/
 static void
 device_state_changed_cb(wifi_direct_error_e error_code,
                         wifi_direct_discovery_state_e discovery_state, void *user_data)
 {
     if (device_state == WIFI_DIRECT_DEVICE_STATE_ACTIVATED)
-        printf("Activate Wi-Fi Direct™ device!\n");
+        printf("Activate Wi-Fi Direct device!\n");
     else if (device_state == WIFI_DIRECT_DEVICE_STATE_DEACTIVATED)
-        printf("Deactivate Wi-Fi Direct™ device!\n");
+        printf("Deactivate Wi-Fi Direct device!\n");
 }
 
 error_code = wifi_direct_set_device_state_changed_cb(device_state_changed_cb, NULL);
 
-/* Activate Wi-Fi Direct™ */
+/* Activate Wi-Fi Direct */
 error_code = wifi_direct_activate();
 if (error_code != WIFI_DIRECT_ERROR_NONE) {
     dlog_print(DLOG_ERROR, LOG_TAG, "[wifi_direct_activate] Failed.");
@@ -143,11 +146,11 @@ discovery_state_changed_cb(wifi_direct_error_e error_code,
 
 error_code = wifi_direct_set_discovery_state_changed_cb(discovery_state_changed_cb, NULL);
 
-/* Discover nearby Wi-Fi Direct™ peer devices */
+/* Discover nearby Wi-Fi Direct peer devices */
 wifi_direct_start_discovery(false, 0);
 
 
-When the Wi-Fi Direct™ discovery state changes, the discovery_state_changed_cb() function is called.
+When the Wi-Fi Direct discovery state changes, the discovery_state_changed_cb() function is called.
 
 
 Fetch the list of peers.
@@ -189,7 +192,7 @@ fetch_wifi_direct()
 }

Connect a specific Wi-Fi Direct™ peer device: +

Connect a specific Wi-Fi Direct peer device:

 static void
@@ -251,7 +254,7 @@ connection_state_changed_cb(wifi_direct_error_e error_code,
 error_code = wifi_direct_set_connection_state_changed_cb(connection_state_changed_cb, NULL);

When the connection is no longer needed, disconnect the Wi-Fi Direct™ device: +

When the connection is no longer needed, disconnect the Wi-Fi Direct device:

 error_code = wifi_direct_disconnect(mac_address);
@@ -262,11 +265,11 @@ if (error_code != WIFI_DIRECT_ERROR_NONE) {
 }

To deactivate Wi-Fi Direct™ when it is no longer needed (or the application is exiting): +

To deactivate Wi-Fi Direct when it is no longer needed (or the application is exiting):

 /* Power off the local device using the wifi_direct_deactivate() function */
-/* Deactivate Wi-Fi Direct™ */
+/* Deactivate Wi-Fi Direct */
 wifi_direct_deactivate(NULL);
 
 /* Unset the callbacks */
@@ -280,38 +283,38 @@ wifi_direct_unset_discovery_state_changed_cb(NULL);
 wifi_direct_unset_connection_state_changed_cb(NULL);

Release the Wi-Fi Direct™. +

Release the Wi-Fi Direct.

Power off the local device using the wifi_direct_deactivate() function:

-/* Release Wi-Fi Direct™ */
+/* Release Wi-Fi Direct */
 wifi_direct_deinitialize();

Difference Between Wi-Fi Direct™ and TDLS

Difference Between Wi-Fi Direct and TDLS

There are 2 protocol technologies to connect directly with each other for Wi-Fi devices:

Wi-Fi Direct™
Wi-Fi Direct
TDLS (Tunneled Direct Link Setup)

Wi-Fi Direct™-certified devices can quickly connect to one another while on the go, even when a Wi-Fi network is unavailable, while TDLS operates in the background of a Wi-Fi network to optimize performance. Many devices are certified for both solutions and use them in different situations.

Wi-Fi Direct-certified devices can quickly connect to one another while on the go, even when a Wi-Fi network is unavailable, while TDLS operates in the background of a Wi-Fi network to optimize performance. Many devices are certified for both solutions and use them in different situations.

For more information, see What is the difference between TDLS and Wi-Fi Direct?, IEEE 802.11z - TDLS and Content sharing, syncing, streaming protocols for Wi-Fi.

Wi-Fi Direct™

Wi-Fi Direct

Wi-Fi Direct™ is a new technology defined by the Wi-Fi Alliance aimed at enhancing direct device to device communications in Wi-Fi. Wi-Fi Direct™ can be used to directly connect mobile phones, tablets, and PCs to peripherals, such as cameras, printers, gaming devices, or a wireless mouse, without the need for an access point. Devices can make a one-to-one connection, or a group of several devices can connect.

Wi-Fi Direct is a new technology defined by the Wi-Fi Alliance aimed at enhancing direct device to device communications in Wi-Fi. Wi-Fi Direct can be used to directly connect mobile phones, tablets, and PCs to peripherals, such as cameras, printers, gaming devices, or a wireless mouse, without the need for an access point. Devices can make a one-to-one connection, or a group of several devices can connect.

Figure: Wi-Fi Direct™

Figure: Wi-Fi Direct

Wi-Fi Direct

Direct device to device connectivity was already possible in the original IEEE 802.11 standard by means of the ad-hoc mode of operation. However, this never became widely deployed. Wi-Fi Direct™ takes a different approach: in it, one of the devices acts as an access point. This means that legacy Wi-Fi devices can seamlessly connect to Wi-Fi Direct™ devices.

Direct device to device connectivity was already possible in the original IEEE 802.11 standard by means of the ad-hoc mode of operation. However, this never became widely deployed. Wi-Fi Direct takes a different approach: in it, one of the devices acts as an access point. This means that legacy Wi-Fi devices can seamlessly connect to Wi-Fi Direct devices.

TDLS (Tunneled Direct Link Setup)

@@ -324,7 +327,7 @@ wifi_direct_deinitialize();

A TDLS direct link is set up automatically between the devices, without intervention from the AP or the user. The connection with the AP is maintained.

TDLS is not the same as, nor does it replace Wi-Fi Direct™. TDLS is used to optimize the traffic flow in a network, while Wi-Fi Direct™ is used to quickly connect devices to one another while on the go, even when a Wi-Fi network is unavailable.

TDLS is not the same as, nor does it replace Wi-Fi Direct. TDLS is used to optimize the traffic flow in a network, while Wi-Fi Direct is used to quickly connect devices to one another while on the go, even when a Wi-Fi network is unavailable.

diff --git a/org.tizen.training/index.xml b/org.tizen.training/index.xml index 9cceb2e..d9361cb 100644 --- a/org.tizen.training/index.xml +++ b/org.tizen.training/index.xml @@ -35,7 +35,7 @@ - +

Wi-Fi Direct™

Wi-Fi Direct®

Prerequisites

Activating Wi-Fi Direct™

Activating Wi-Fi Direct

Getting the Wi-Fi Direct™ Peer Device Information

Getting the Wi-Fi Direct Peer Device Information

Connecting to a Specific Wi-Fi Direct™ Peer Device

Connecting to a Specific Wi-Fi Direct Peer Device

Managing Wi-Fi Direct™ Groups

Managing Wi-Fi Direct Groups

Deactivating Wi-Fi Direct™

Deactivating Wi-Fi Direct

P2P Connections with Wi-Fi Direct™

P2P Connections with Wi-Fi Direct®

Required Privileges and Features

Wi-Fi Direct™ Settings

Wi-Fi Direct Settings

Implementing Wi-Fi Direct™

Implementing Wi-Fi Direct

Difference Between Wi-Fi Direct™ and TDLS

Difference Between Wi-Fi Direct and TDLS

Wi-Fi Direct™

Wi-Fi Direct

TDLS (Tunneled Direct Link Setup)