A Network Node and Method for Handling Cellular and D2D Communications in a Wireless Communications Network

A method performed by a network node for handling cellular communications and Device-to Device (D2D) communications of user equipments served by the network node in a wireless telecommunications network, the method comprising:

• determining, for at least one Physical Radio Resource (PRR) to be scheduled for both cellular and D2D communications of the user equipments, a number of spatial streams to be used by the cellular and D2D communications of the user equipments;
• and
• transmitting an indication of the number of spatial streams of said determined number of spatial streams to be used in D2D communication on the at least one PRR to at least one user equipment of at least one D2D pair of user equipments determined to be scheduled for D2D communication.

A network node for handling cellular communications and Device-to Device (D2D) communications of user equipments served by the network node in a wireless telecommunications network, the network node comprising

• processing circuitry configured to determine, for at least one Physical Radio Resource Block (PRR) to be scheduled for both cellular and D2D communications of the user equipments, a number of spatial streams to be used by the cellular and D2D communications of the user equipments, and to transmit an indication of the number of spatial streams of said determined number of spatial streams to be used in D2D communication on the at least one PRR to at least one user equipment of the at least one D2D pair of user equipments determined to be scheduled for D2D communication.

A method performed by a user equipment for configuring a Device-to-Device (D2D) communication with another user equipment in a wireless telecommunications network, the method comprising

• receiving an indication of the number of spatial streams to be used in the D2D communication on at least one Physical Radio Resource (PRR) that is scheduled for both cellular and D2D communications in the wireless communication network;
• and
• configuring the number of spatial streams to be used in the D2D communication using the received indication.

A user equipment for configuring a Device-to-Device (D2D) communication with another user equipment in a wireless telecommunications network, the user equipment comprising

• processing circuitry configured to receive an indication of the number of spatial streams to be used in the D2D communication on at least one Physical Radio Resource (PRR) that is scheduled for both cellular and D2D communications in the wireless communication network, and to configure the number of spatial streams to be used in the D2D communication using the received indication.