US 12,267,785 B2
Pre-emptive suppression of inter-cell interference in cellular wireless communication networks
Chunhui Liu, Beijing (CN); Qi Zhang, Beijing (CN); and Yuan Dong, Beijing (CN)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/772,254
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Jan. 22, 2020, PCT No. PCT/IB2020/050499
§ 371(c)(1), (2) Date Apr. 27, 2022,
PCT Pub. No. WO2021/090074, PCT Pub. Date May 14, 2021.
Claims priority of application No. PCT/CN2019/115588 (WO), filed on Nov. 5, 2019.
Prior Publication US 2022/0386241 A1, Dec. 1, 2022
Int. Cl. H04W 52/14 (2009.01); H04W 52/26 (2009.01); H04W 72/04 (2023.01); H04W 72/044 (2023.01); H04W 72/23 (2023.01)
CPC H04W 52/143 (2013.01) [H04W 52/262 (2013.01); H04W 52/267 (2013.01); H04W 72/0473 (2013.01); H04W 72/23 (2023.01)] 4 Claims
OG exemplary drawing
 
1. A method in an access node of a wireless communication network comprising bandwidth divided into a plurality of physical resource blocks, PRBs, the access node configured to transmit downlink traffic to a plurality of user equipments, UEs, in a coverage area of the access node, the method comprising:
detecting at least one unscheduled PRB in the plurality of PRBs;
diluting downlink traffic across the at least one unscheduled PRB by selecting one UE from the plurality of UEs and scheduling a selected one unscheduled PRB for downlink traffic destined for the selected UE; and
reducing transmission power of scheduled PRBs in the plurality of PRBs by reducing a modulation and coding scheme, MCS, value allocated to the selected UE, reducing the MCS value allocated to the selected UE comprising:
finding a new MCS value, based at least in part on a new number of PRBs scheduled for downlink traffic destined for the selected UE, such that a change in a transport block size (TBS) for downlink traffic destined for the selected UE is minimized; and
allocating the new MCS value to the selected UE.