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1. (WO2017182092) A COMMUNICATIONS DEVICE, AN ACCESS POINT AND METHODS THEREIN FOR ACCESSING A RESOURCE UNIT

Pub. No.:    WO/2017/182092    International Application No.:    PCT/EP2016/058970
Publication Date: Fri Oct 27 01:59:59 CEST 2017 International Filing Date: Sat Apr 23 01:59:59 CEST 2016
IPC: H04W 74/08
H04W 52/02
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventors: BUTT, Naveed
WILHELMSSON, Leif
NILSSON, Thomas
Title: A COMMUNICATIONS DEVICE, AN ACCESS POINT AND METHODS THEREIN FOR ACCESSING A RESOURCE UNIT
Abstract:
A communications device (204) and a method therein for accessing a Resource Unit (RU) are provided. The communications device and an Access Point (AP) (202) are operating in a wireless communications network (200). When wanting to start an access attempt within a time interval, the communications device selects a counter value from a first range given by zero and a first Contention-Window OFDMA (CWO) value CWO1. Further, when wanting to start an access attempt outside the time interval, the communications device selects the counter value from a second range given by zero and a second CWO value CW02, wherein the second CWO value CW02 is larger than the first CWO value CWO1. The communications device performs a contention procedure using the selected counter value, wherein a Resource Unit (RU) is accessed in dependence of the performed contention procedure.