Access point device (AP) and client device (STA) using grouping of transmission parameters

A client device (STA) for communicating with an access point device (AP), the STA comprising:

• a transceiver, configured to:
• receive from the AP a first data packet advertising definitions for a set of groups, wherein each group of the set of groups is defined by a specific set of transmission parameters associated with transmission of data by STAs within said each group, and
• receive from the AP a second data packet indicating an allocation of resources for at least part of the groups;
• and
• a controller, configured to:
• select random access (RA) resources allocated to a group based on a definition for the group satisfying transmission parameters of the STA, and to control the transceiver transmitting a response frame using at least part of the RA resources allocated for the selected group.

A reception method for receiving an indication of a grouping of transmission parameters, the reception method comprising:

• receiving, from an access point device (AP), a first data packet advertising definitions for a set of groups, wherein each group of the set of groups is defined by a specific set of transmission parameters associated with transmission of data by STAs within said each group;
• receiving, from the AP, a second data packet indicating an allocation of resources for at least part of the groups;
• selecting RA resources allocated to a group based on a definition for the group satisfying transmission parameters of the STA, and
• transmitting a response frame using at least part of the RA resources allocated for the selected group.