WiFi Direct:
1. WiFi Direct standards allow devices in a wireless network to connect to each other without having to pass through a wireless router. Similar to Bluetooth technology, this standard allows wireless devices to interconnect in a point-to-point manner, and is significantly higher than Bluetooth in terms of transmission speed and transmission distance.
2. WiFi Direct devices are devices that support peer-to-peer connectivity, which supports both infrastructure networks and P2P connections. WiFi Direct devices establish connections by forming teams (in the form of one-to-one or one-to-many topologies), and the work of the team is similar to that of infrastructure BSS.
3. A WiFi Direct device is responsible for the entire team, including which equipment to join, when the team starts and terminates, and so on. This device is an access point for traditional client devices, which can provide some of the services provided by infrastructure access points.
4. A variety of WiFi devices, such as computers, mobile phones, computer peripherals, household appliances and so on can use it. Devices that meet this standard can easily connect, transmit data or share applications with other devices without hot spots and routers. WiFi Direct can support a pair of continuous connections, or multiple devices can be connected at the same time, and the WiFi Direct standard will support all WiFi devices, from 11a/b/g to 11n, between different standard WiFi devices can also be directly connected.
Features:
1. Mobility and portability: WiFi Direct devices can connect to each other anytime, anywhere.
Instant availability: a newly purchased WiFi Direct notebook can create a direct connection to a user's existing traditional WiFi device.
2. Easy to use: WiFi Direct device discovery (Device Discovery) and service discovery (Service Discovery) functionality help users identify available devices and services and then establish connections. For example, if users want to print files, they can learn which WiFi network has a printer through the above service.
3. Simple and secure connection: the user can press the button on any device or enter the PIN code (that is, the PIN code displayed by the device) to easily create a secure connection.
WiFi Display:
1. With WiFi Display, mobile phone / mobile PC- TV / monitor will be able to connect wirelessly. The standard, developed by the Wireless Industry Alliance, can compress 3D video and transmit it over WiFi.
2. 3D video consumes a lot of bandwidth and delays if it is not compressed, and WiFi Display technology can reduce the delay time to less than 1% milliseconds.
In short, the technology is aimed at video streaming. The main role is to wirelessly display mobile phone pictures or computers on mobile PC- televisions or other displays.
3. Compared with WiFi Direct, WiFi Display and WiFi Direct have relatively single function, that is, to transmit video stream, display mobile phone picture on TV or display, and WiFi Direct is one-to-one or one-to-many wireless docking, it can realize all kinds of data transmission, not only video stream, but also print, data transmission and so on.