The following table shows the comparison table of above technologies:
|Development Company / Party||Digital Living Network Alliance||WI-FI Alliance||Intel||Google||Apple|
|Standard / Protocol Type||Open standard||Open standard||Open standard||Open standard||Proprietary|
|Standard / Network Protocol||DLNA protocol set||Wi-Fi direct, TDLS||Wi-Fi direct, TDLS||DIAL / mDNS||AirPlay|
|Wireless Type||802.11 (a,b,g,n,ac)||802.11 (a,b,g,n,ac)||802.11 (a,b,g,n,ac)||802.11 (a,b,g,n,ac)||802.11 (a,b,g,n,ac)|
|Need WLAN AP for Relay Purpose||Yes||No||No||Yes||Yes|
|Application Content Projection||No||No||No||Yes||Yes|
|Client Multi-Task During Projection||Yes||No||No||Yes||Yes (by non-official method)|
|Supported Client Platform||Supported by most platforms||Android, Windows||Windows, Android||Supported by most platforms||Apple devices and third party speakers|
Which one is more suitable for you?
There are many similar technologies in the market, you can choose the appropriate technology based on your needs and equipment. If you need “point to point” projection capabilities, “Miracast” is more suitable for which it is widely supported by many HDTV and you do not need to purchase additional receiver. If you want to have more customized features, “Chromecast” will be best suited since it supports multiple function and was also supported by Apple devices. On the other hand, if you are an Apple user and having some Apple equipment, the AirPlay technology will be more suitable for you, you could purchase AppleTV for screen projection.
The following figure shows the difference between point-to-point network and wireless relay network:
Which one was supported by UM campus network?
Besides “Miracast”, all other solutions require external home-grade wireless network such as WPA2-PSA authentication for device discovery and communication, which is generally less secure and cannot be routed in the enterprise-grade network. It is not related to hardware capacity but protocol specification. UM campus network is separated by multiple broadcast-domain like other large scale enterprise design, and the UPnP, mDNS protocol can only work in the single broadcast-domain network. This is the reason why these technologies cannot be applied in our UM campus network environment. However, ICTO will keep tracking, studying and reviewing the latest technologies for campus IT services improvements.