Spatial Reuse Parameters for Opportunistic Adaptive TPC and CCA

摘要

A method of spatial reuse with opportunistic transmit power control (TPC) and clear channel assessment (CCA) is proposed. In the opportunistic TPC and CCA, a spatial reuse station (SR-STA) gains enough knowledge in certain situation for more aggressive spatial reuse such that its transmit power may be adjusted to meet the spatial reuse conditions based on the received OBSS PPDU and the corresponding spatial reuse parameter (SRP). Both Type 1 SRP and Type 2 SRP are defined. In one example, the Type 1 or Type 2 SRP is a 5-bit parameter carried in the HE-SIG-A field of the OBSS PPDU, which can be a trigger frame, a response frame, a request-to-send (RTS)/clear-to-send (CTS) frame, and a data frame.

主权项

1. A method comprising:
detecting an ongoing frame exchange associated with one or more overlapping basic service set (OBSS) stations (OBSS-STAs) by an initiating spatial reuse station (SR-STA) in a wireless communication network; decoding a spatial reuse parameter (SRP) from the detected ongoing frame exchange; determining a transmit power or power density level based on the SRP if a list of spatial reuse conditions is satisfied; and performing a channel access procedure to initiate a spatial reuse frame exchange with a responding SR-STA in concurrent with the ongoing frame exchange upon satisfying the list of spatial reuse conditions.