US 10,342,041 B2
Access to a communications channel in a wireless communications network
Leif Wilhelmsson, Dalby (SE); Guido Roland Hiertz, Aachen (DE); Dzevdan Kapetanovic, Lund (SE); Christofer Lindheimer, Linkoping (SE); Filip Mestanov, Sollentuna (SE); Thomas Nilsson, Malmo (SE); Eric Nordstrom, Stockholm (SE); Hakan Persson, Solna (SE); Johan Soder, Stockholm (SE); and Meng Wang, Sundbyberg (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (publ), Stockholm (SE)
Appl. No. 15/310,748
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed May 12, 2014, PCT No. PCT/EP2014/059615
§ 371(c)(1), (2) Date Nov. 11, 2016,
PCT Pub. No. WO2015/172805, PCT Pub. Date Nov. 19, 2015.
Prior Publication US 2017/0086224 A1, Mar. 23, 2017
Int. Cl. H04W 74/04 (2009.01); H04W 72/12 (2009.01); H04W 52/34 (2009.01); H04W 84/12 (2009.01); H04W 52/24 (2009.01)
CPC H04W 74/04 (2013.01) [H04W 52/34 (2013.01); H04W 72/121 (2013.01); H04W 52/243 (2013.01); H04W 84/12 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for allocating access to a communications channel in a wireless communications network, the method being performed by an access point, AP, in the wireless communications network and associated with stations, STAs, and comprising the steps of:
grouping the STAs of the AP into at least two groups of STAs, each group being associated with an own minimum transmission power level needed by the AP to communicate with the STAs in the associated group of said at least two groups;
allocating a first time interval for a first group of STAs associated with highest minimum transmission power to access the communications channel concurrently with a third time interval being allocated by another AP for a third group of STAs associated with lowest minimum transmission power level needed by said another AP to communicate with said third group of STAs to access the communications channel; and
allocating a second time interval, non-overlapping with said first time interval, for a second group of STAs associated with lowest minimum transmission power to access the communications channel concurrently with a fourth time interval being allocated by said another AP for a fourth group of STAs associated with highest minimum transmission power level needed by said another AP to communicate with said fourth group of STAs to access the communications channel.