US 12,143,979 B2
Methods and devices for enabling group transmission in communication networks
Min Wang, Luleå (SE); Jan Christoffersson, Luleå (SE); and Mårten Ericson, Luleå (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/610,521
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed May 21, 2019, PCT No. PCT/EP2019/063140
§ 371(c)(1), (2) Date Nov. 11, 2021,
PCT Pub. No. WO2020/233804, PCT Pub. Date Nov. 26, 2020.
Prior Publication US 2022/0217731 A1, Jul. 7, 2022
Int. Cl. H04W 74/08 (2024.01); H04W 72/121 (2023.01); H04W 72/20 (2023.01); H04W 72/23 (2023.01); H04W 28/02 (2009.01)
CPC H04W 72/121 (2013.01) [H04W 72/20 (2023.01); H04W 72/23 (2023.01); H04W 28/0278 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for enabling two-hop group transmission in a telecommunication network comprising a plurality of devices capable of Device to Device, D2D, communication and comprising a base station, the plurality of devices having a group coordinator device, the plurality of devices being configured to directly communicate with one another over a D2D link and the group coordinator device is arranged to communicate with the base station over a cellular link, the method comprising:
receiving, by the group coordinator device, from at least one of the plurality devices, an indicator arranged to indicate to the group coordinator device that grants for both the D2D and cellular transmissions are to be requested;
after the receiving of the indicator, sending, by the group coordinator device, to the base station, a Scheduling Request, SR, message requesting grants for BSRs for both D2D and group cellular transmission;
receiving, by the group coordinator device, from the base station, a grant for a Buffer Status Report, BSR, for the D2D and cellular transmissions;
transmitting, by the group coordinator device, to the base station, the BSR;
receiving, by the group coordinator device, from the base station, a grant for data transmission for said D2D and the cellular transmissions based on the transmitted BSR; and
distributing, by the group coordinator device, to the plurality of devices, the received grant thereby enabling group transmission for communication among the plurality of devices over the D2D link and for communication between the plurality of devices and the base station over the cellular link.