Radio system with uplink beacon transmission

A User Equipment, UE, comprising a transceiver, the UE being adapted to send uplink beacons, the UE being configured to:

• send the uplink beacons to a network node;
• and
• receive an uplink beacon reconfiguration from the network node when the UE is in a group of UEs moving together also comprising at least one other UE;
• the UE being configured to, based upon the uplink beacon configuration,
• start receiving a group uplink beacon from another UE in the group and to stop sending the uplink beacons, based on the reception of the uplink beacon reconfiguration relating to the another UE in the group.

A device, comprising:

• a memory storing instructions;
• and
• a processor coupled to the memory to execute the instructions to:
• receive uplink beacons corresponding to a plurality of User of Equipment, UE,
• determine a group of the plurality of UEs moving together comprising at least a first UE and a second UE, based on the received uplink beacons from the UEs in the group,
• determine an uplink beacon reconfiguration for each UE in the group, comprising:
• information specifying a group uplink beacon to be assigned to represent the group of UEs, and
• information specifying a UE configuration for the UEs in the group, indicating each UE in the group either as being a UE for sending the group uplink beacon to the processor, or as a UE for receiving the group uplink beacon, while not sending the corresponding uplink beacon, from the UE sending the group uplink beacon.