In Windows 10, starting from build 1703 (and later), now supports Miracast on existing wireless network or LAN. ScreenBeam 960 receiver with firmware 126.96.36.199 (or later) can support this feature when enabled through the receiver’s configuration.
How it works (referencing https://docs.microsoft.com)
Users attempt to connect to a Miracast receiver as they did previously. When the list of Miracast receivers is populated, Windows 10 will identify that the receiver can support a connection over the LAN. When the user selects a ScreenBeam 960 receiver, Windows 10 will attempt to resolve the device's hostname via standard DNS, as well as via multicast DNS (mDNS). If the name is not resolvable via either DNS method, Windows 10 will fall back to establishing the Miracast session using the standard Wi-Fi direct (P2P) connection.
PIN support is only supported from Windows 10 build 1809 (and later).