US 11,690,008 B2
Saving power in remote radio heads
Miguel Berg, Sollentuna (SE); Chenguang Lu, Sollentuna (SE); Daniel Cederholm, Sollentuna (SE); and André Mendes Cavalcante, Indaiatuba (BR)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/256,927
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Aug. 24, 2018, PCT No. PCT/SE2018/050857
§ 371(c)(1), (2) Date Dec. 29, 2020,
PCT Pub. No. WO2020/018008, PCT Pub. Date Jan. 23, 2020.
Claims priority of provisional application 62/700,976, filed on Jul. 20, 2018.
Prior Publication US 2021/0289439 A1, Sep. 16, 2021
Int. Cl. H04W 52/02 (2009.01)
CPC H04W 52/0206 (2013.01) 23 Claims
OG exemplary drawing
 
1. A method for saving power in remote radio heads, RRHs, of a wireless communication system, the method being performed in an RRH controller node associated with a plurality of RRHs for the same cell, each of the plurality of RRHs having at least a first antenna branch (A) of the cell and a second antenna branch (B) of the cell, the method comprising:
providing (S120) a first power saving indication to a first RRH of the plurality of RRHs, to inactivate its first antenna branch (A); and
providing (S120) a second power saving indication to a second RRH of the plurality of RRHs, to inactivate its second antenna branch (B);
wherein at least one antenna branch is kept active in the first and second RRH.