User Equipment and a Radio Network Node, and Methods Therein for Device-to-Device Communication

A method in a first user equipment for handling device-to-device, D2D, communications in a communications network, wherein the communications network comprises a first user equipment, a first radio network node serving the first user equipment, a second user equipment, and a D2D capable radio network node, wherein the method comprises:

• recognizing a second user equipment to have a D2D communication with;
• and
• performing a cell change from the first radio network node to the D2D capable radio network node, when the first radio network node does not have D2D capability.

A method in a second radio network node for enabling D2D communications in a communications network, wherein the communications network comprises a first user equipment served by a first radio network node, a second user equipment and a D2D capable radio network node, wherein the method comprises, when the first radio network node has no D2D capability:

• requesting a cell change of the first user equipment to the D2D capable radio network node.

A first user equipment for handling device-to-device, D2D, communications in a communications network, wherein the communications network comprises a first user equipment, a first radio network node serving the first user equipment, a second user equipment, and a D2D capable radio network node, wherein the first user equipment comprises:

• a recognizing circuit configured to recognize a second user equipment to have a D2D communication with;
• and
• a performing circuit configured to perform a cell change from the first radio network node to the D2D capable radio network node, when the first radio network node does not have D2D capability.

A second radio network node for enabling D2D communications in a communications network, wherein the communications network comprises a first user equipment served by a first radio network node, a second user equipment and a D2D capable radio network node, wherein the second radio network node comprises:

• a requesting circuit configured to request a cell change of the first user equipment to a D2D capable radio network node, when the first radio network node has no D2D capability.