US 12,219,548 B2
Radio resource allocation for multi-user MIMO
Dongsheng Yu, Ottawa (CA); Xixian Chen, Ottawa (CA); Xiaoming Lai, Ottawa (CA); and Weigang Li, Ottawa (CA)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/633,666
Filed by Telefonaktiebolaget LM Ericsson (PUBL), Stockholm (SE)
PCT Filed Aug. 9, 2019, PCT No. PCT/IB2019/056812
§ 371(c)(1), (2) Date Feb. 8, 2022,
PCT Pub. No. WO2021/028711, PCT Pub. Date Feb. 18, 2021.
Prior Publication US 2022/0322366 A1, Oct. 6, 2022
Int. Cl. H04W 72/121 (2023.01); H04B 7/0452 (2017.01); H04L 5/00 (2006.01); H04W 72/566 (2023.01)
CPC H04W 72/121 (2013.01) [H04B 7/0452 (2013.01); H04W 72/566 (2023.01); H04L 5/0007 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for use in a network node for scheduling wireless transmissions in a frequency domain comprising a plurality of multi-user multiple-input multiple-output (MU-MIMO) transmission layers, the method comprising:
determining a first wireless device is spatially pairable with a second wireless device using MU-MIMO transmission and that a scheduling priority of the first wireless device is higher than a scheduling priority of the second wireless device, a first amount of data being buffered for communication with the first wireless device and a second amount of data is buffered for communication with the second wireless device;
allocating frequency domain resources of a first transmission layer of the plurality of MU-MIMO transmission layers for transmission of the first amount of data buffered for communication with the first wireless device according to the scheduling priority of the first wireless device;
allocating frequency domain resources in a second transmission layer of the plurality of MU-MIMO transmission layers for transmission of an amount of data buffered for communication with the second wireless device according to the scheduling priority of the first wireless device, the amount of frequency domain resources allocated in the second transmission layer being no larger than the amount of frequency domain resources allocated in the first transmission layer;
transmitting the buffered data to the first wireless device on the first transmission layer and the buffered data to the second wireless device on the second transmission layer;
determining the second amount of data buffered for communication with the second wireless device is larger than the amount of data buffered for communication with the first wireless device resulting in a remaining amount of data to be communicated to the second wireless device;
allocating frequency domain resources for the remaining amount of data according to the scheduling priority of the second wireless device; and
transmitting the remaining amount of data to the second wireless device.