US 11,057,928 B2
Channel access configuration
Amitav Mukherjee, Fremont, CA (US); Jung-Fu Cheng, Fremont, CA (US); Sorour Falahati, Stockholm (SE); Laetitia Falconetti, Solna (SE); Havish Koorapaty, Saratoga, CA (US); and Daniel Larsson, Stockholm (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 15/316,565
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 12, 2016, PCT No. PCT/SE2016/050751
§ 371(c)(1), (2) Date Dec. 6, 2016,
PCT Pub. No. WO2017/030486, PCT Pub. Date Feb. 23, 2017.
Claims priority of provisional application 62/205,024, filed on Aug. 14, 2015.
Prior Publication US 2017/0196020 A1, Jul. 6, 2017
Int. Cl. H04W 74/00 (2009.01); H04W 74/04 (2009.01); H04W 74/08 (2009.01); H04W 74/02 (2009.01)
CPC H04W 74/004 (2013.01) [H04W 74/006 (2013.01); H04W 74/04 (2013.01); H04W 74/02 (2013.01); H04W 74/0808 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a network node of a wireless communication network, the method comprising:
sending downlink control information (DCI) for a User Equipment (UE), the DCI indicating an uplink grant to schedule an uplink transmission by the UE in an unlicensed frequency band, where the UE will perform a Listen Before Talk (LBT) procedure in conjunction with performing the uplink transmission; and
including one bit in the DCI as a control bit, wherein the network node selectively sets the control bit to one of two possible states, wherein a first state among the two possible states triggers the UE to reset a Contention Window (CW) size used by the UE for at least one LBT attempt performed by the UE in the LBT procedure, and wherein a second state among the two possible states triggers the UE to set the CW size for the at least one LBT attempt according to predefined rules.