Trigger-based communication in multi-AP context

Abstract

Multi-Access Point, MAP, technology provides some collaboration between neighbouring APs (Access Points). Better MAP coordination is sought, in particular with respect to triggering procedures that trigger and allocate resources to other coordinated APs. A communication method in a wireless network is proposed that comprises, at a first AP managing a first BSS (Basic Service Set), sending a MAP Trigger frame (TF), allocating resources to a coordinated AP in a second BSS and soliciting a transmission within the allocated resources. A MAP BSRP (Buffer Status Report Poll) TF collecting AP needs may precede a MAP MU-RTS (Multi User Request to Send) TF to protect the medium and a MAP Basic TF to trigger communication for the coordinated APs. Various signalling are proposed to signal MAP type in the Trigger frames as well as to signal resource allocation to coordinated APs. An alternative method defines a first AP managing a first BSS, receiving from a second AP managing a second BSS, a BSR (Buffer Status Report) frame reporting resource needs for the second BSS.