User equipment and a radio network node, and methods therein for device-to-device communication
First Claim
1. 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;
transmitting first D2D capability information associated with the first radio network node serving the first user equipment to the second user equipment;
receiving second D2D capability information associated with the D2D capable radio network node and a request from the second user equipment to change from the first radio network node to the D2D capable radio network node; 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.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments relate to device-to-device (D2D) communications in a communications network (1), wherein the communications network (1) comprises a first user equipment (10), a first radio network node (14) serving the first user equipment (10), a second user equipment (12). and a D2D capable radio network node (18,18). The first user equipment (TO) is configured to recognize a second user equipment (12) to have a D2D communication with and to perform a cell change from the first radio network node (14) to the D2D capable radio network node (16,18), when the first radio network node (14) does not have D2D capability.
14 Citations
21 Claims
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1. 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:
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recognizing a second user equipment to have a D2D communication with; transmitting first D2D capability information associated with the first radio network node serving the first user equipment to the second user equipment; receiving second D2D capability information associated with the D2D capable radio network node and a request from the second user equipment to change from the first radio network node to the D2D capable radio network node; 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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. 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:
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requesting a cell change of the first user equipment to the D2D capable radio network node; and transmitting one or more cell identifiers of one or more neighbouring radio network nodes capable of supporting D2D communication, wherein the one or more cell identifiers are transmitted to the second user equipment. - View Dependent Claims (8, 9, 10, 11)
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12. 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:
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a recognizing circuit configured to recognize a second user equipment to have a D2D communication with; and a transmitting circuit configured to transmit first D2D capability information associated with the first radio network node serving the first user equipment to the second user equipment; a receiving port configured to receive second D2D capability information associated with the D2D capable radio network node; 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. - View Dependent Claims (13, 14, 15, 16)
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17. 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:
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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; and transmitting one or more cell identifiers of one or more neighbouring radio network nodes capable of supporting D2D communication, wherein the one or more cell identifiers are transmitted to the second user equipment. - View Dependent Claims (18, 19, 20, 21)
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Specification