US Patent No. 10,194,467

LISTEN-BEFORE-TALK IN UPLINK MULTIUSER MIMO SYSTEMS


Patent No. 10,194,467
Issue Date January 29, 2019
Title Listen-before-talk In Uplink Multiuser Mimo Systems
Inventorship Chrysostomos Koutsimanis, Stockholm (SE)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,194,467

1. A method of operation of a User Equipment, UE, in a cellular communications network, comprising:performing a Listen-Before-Talk, LBT, procedure for an observed channel, a result of the LBT procedure being that the observed channel is busy;
receiving an indication of a spatial load of the cellular communications network;
deciding to override the LBT procedure based on knowledge that the observed channel is busy due to transmission by a compatible UE, the compatible UE being a UE that can be co-scheduled with the UE in the cellular communications network and based on the indication of the spatial load of the cellular communications network; and
transmitting on the observed channel even though the result of the LBT procedure is that the observed channel is busy upon deciding to override the LBT procedure.