Facilitating group handover
First Claim
1. A method at a user equipment for a group handover, comprising:
- receiving an indication to act as a device-to-device (D2D) cluster head controlling a D2D cluster from a base station (BS);
receiving D2D cluster discovery information enabling transmission of a discovery signal corresponding to the D2D cluster from the BS;
transmitting the discovery signal according to the received D2D cluster discovery information in order to allow other user equipment to discover the D2D cluster;
receiving D2D cluster-specific radio resource commitment information determined by a target BS in a handover process of a plurality of user equipment from a source cell to a target cell;
performing admission control for the user equipment trying to access the D2D cluster on the basis of the received D2D cluster-specific radio resource commitment information; and
transmitting a handover request to the target BS regarding a handover of at least one member of the D2D cluster from the source cell to the target cell.
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Accused Products
Abstract
There is provided a method, including: receiving, by a target base station, information that a handover of a plurality of user equipment currently connected to a source cell is needed to a target cell; causing a device-to-device, D2D, cluster generation, wherein each generated D2D cluster is controlled by a predetermined user equipment connected to the target cell and acting as a D2D cluster head; determining D2D cluster-specific radio resource commitment information for each generated D2D cluster; indicating corresponding D2D cluster-specific radio resource commitment information to each D2D cluster head; and receiving a handover request from at least one D2D cluster head, wherein the handover request is for handing at least one member of the corresponding D2D cluster over to the target cell.
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Citations
20 Claims
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1. A method at a user equipment for a group handover, comprising:
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receiving an indication to act as a device-to-device (D2D) cluster head controlling a D2D cluster from a base station (BS); receiving D2D cluster discovery information enabling transmission of a discovery signal corresponding to the D2D cluster from the BS; transmitting the discovery signal according to the received D2D cluster discovery information in order to allow other user equipment to discover the D2D cluster; receiving D2D cluster-specific radio resource commitment information determined by a target BS in a handover process of a plurality of user equipment from a source cell to a target cell; performing admission control for the user equipment trying to access the D2D cluster on the basis of the received D2D cluster-specific radio resource commitment information; and transmitting a handover request to the target BS regarding a handover of at least one member of the D2D cluster from the source cell to the target cell. - View Dependent Claims (2)
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3. An apparatus in a target base station (BS), comprising:
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at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to; receive information that a handover of a plurality of user equipment currently connected to a source cell is needed to a target cell; generate a device-to-device, D2D, cluster generation, wherein each generated D2D cluster is controlled by a predetermined user equipment connected to the target cell and acting as a D2D cluster head; determine D2D cluster-specific radio resource commitment information for each generated D2D cluster; indicate corresponding D2D cluster-specific radio resource commitment information to each D2D cluster head; and receive a handover request from at least one D2D cluster head, wherein the handover request is for handing at least one member of the corresponding D2D cluster over to the target cell. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus in a source base station (BS), comprising:
- at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to;
receive device-to-device, D2D, cluster discovery information from a target BS in a handover process of a plurality of user equipment from a source cell to a target cell, wherein the D2D discovery information indicates discovery of at least one predetermined user equipment connected to the target cell and the predetermined user equipment acts as a D2D cluster head controlling a corresponding D2D cluster; and transmit the D2D cluster discovery information to the plurality of user equipment currently connected to the source cell. - View Dependent Claims (13, 14, 15)
- at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to;
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16. An apparatus at a user equipment for a group handover, comprising:
- at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to;
receive an indication to act as a device-to-device, D2D, cluster head controlling a D2D cluster from a base station (BS); receive D2D cluster discovery information enabling transmission of a discovery signal corresponding to the D2D cluster from a base station (BS); transmit the discovery signal according to the received D2D cluster discovery information in order to allow other user equipment to discover the D2D cluster; receive D2D cluster-specific radio resource commitment information determined by a target BS in a handover process of a plurality of user equipment from a source cell to a target cell; perform admission control for the user equipment trying to access the D2D cluster on the basis of the received D2D cluster-specific radio resource commitment information; and transmit a handover request to the target BS regarding a handover of at least one member of the D2D cluster from the source cell to the target cell. - View Dependent Claims (17, 18, 19, 20)
- at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus at least to;
Specification