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US 12,750,742 B2Granted
Group handover with delayed or omitted signaling for layer 2 sidelink relaying
AssigneeMediaTek Singapore Pte. Ltd.
InventorsNathan Edward Tenny, Xuelong Wang, Chun-Fan Tsai
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Abstract
A method of performing a group handover procedure in a layer 2 relaying architecture is proposed to meet the group handover timing constraints. A relay device and one or more remote devices are collectively relocated from a source network node to a target network node, where messages of the group handover procedure are selectively delayed or omitted to ensure synchronisation of the handover operations at the various devices.
Claims6
A method comprising:
- receiving a first handover command from a source base station by a relay user equipment (UE), wherein the relay UE offers relaying service to a remote UE;
- receiving a second handover command from the source base station, and in response forwarding the second handover command to the remote UE;
- performing a handover to a target base station by the relay UE and sending a first handover complete message of the relay UE to the target base station upon completing the handover;
- and
- receiving, by the relay UE, a second handover complete message sent from the remote UE, and wherein the relay UE terminates the second handover complete message without forwarding the second handover complete message.
2 more elements
A relay User Equipment (UE) comprising:
- a receiver that receives a first handover command from a serving base station by the relay user equipment (UE), wherein the relay UE offers relaying service to a remote UE;
- a transmitter that forwards a second handover command to the remote UE in response to receiving the second handover command from the serving base station;
- a handover handling circuit that performs a handover to a target base station, wherein the relay UE sends a first handover complete message to the target base station upon completing the handover;
- and
- a traffic relaying controller that receives a second handover complete message sent from the remote UE and terminates the second handover complete message without forwarding the second handover complete message.
2 more elements
Dependencies are inferred from the claim text.