Method and apparatus for clear channel assessment

A method of wireless communication, the method comprising:

• detecting, by a processing circuit in a device, received signals in a channel carrying a data unit;
• determining that the data unit belongs to an overlapping basic service set (OBSS) that overlaps with a basic service set (BSS) that the device belongs to without information in a preamble of the data unit when the data unit violates a time requirement in the channel that is a primary channel of another BSS;
• selecting a clear channel assessment threshold that is dynamically adjusted for a spatial re-use when the data unit is determined to belong to the OBSS;
• and
• comparing a signal strength of the received signals carrying the data unit with the selected clear channel assessment threshold to determine a busy/idle status of the channel.

A non-transitory computer readable medium storing program instructions for causing a processor to execute operations for a wireless communication, the operations comprising:

• detecting, by a device, received signals in a channel carrying a data unit;
• determining that the data unit belongs to an overlapping basic service set (OBSS) that overlaps with a basic service set (BSS) that the device belongs to without information in a preamble of the data unit when the data unit violates a time requirement in the channel that is a primary channel of another BSS;
• selecting a clear channel assessment threshold that is dynamically adjusted for a spatial re-use when the data unit is determined to belong to the OBSS;
• and
• comparing a signal strength of the received signals carrying the data unit with the selected clear channel assessment threshold to determine a busy/idle status of the channel.