Multi-user multiple input multiple output wireless communications

摘要

Certain aspects of the present disclosure relate to a method for enhanced multi-user multiple input multiple output (MU-MIMO) wireless communications. The proposed method may reduce and/or eliminate stringent frequency and time synchronization requirements for stations (STAs) to participate in a downlink MU-MIMO transaction by utilizing deterministic scheduling.

主权项

1. A method for wireless communications, comprising:
transmitting a request message to a plurality of apparatuses, the request message comprising scheduling information indicating when each of the apparatuses should transmit a message in response to the request message, wherein the scheduling information comprises scheduled transmission times for sending response messages by the apparatuses, wherein the request message asks for a response from only a subset of the plurality of apparatuses that receive the request message, and wherein the subset of apparatuses is selected based, at least in part, on which apparatuses have channel state information that is out-dated; receiving one or more response messages from the apparatuses transmitted according to the scheduling information; computing transmission information based at least on the response messages; and transmitting data simultaneously to the apparatuses using the computed transmission information.