US 9,794,879 B1 · Power saving mechanism for MU-MIMO transmissions

Abstract

Techniques for power saving by remote wireless mobile devices are provided, in particular by stations (STAs) during downlink (DL) multiple-user multiple-input and multiple-output (MU-MIMO) transmissions in an Institute of Electrical and Electronics Engineers (IEEE) 802.11ay network when reverse direction (RD) transmissions are either enabled and not enabled. Various embodiments enable each STA in a group of STAs to determine an order in which the STAs are requested to send a block acknowledgement (BACK) and which STAs will be granted an RD transmission. Further, a duration of each RD transmission is provided to each STA. Based on the provided information, each STA can determine times to enter a power saving mode. Other embodiments are described and claimed.

Claims20

Dependent claims

An apparatus, comprising:

a memory;
and
baseband circuitry coupled to the memory, the baseband circuitry to:
process a listing of association identifiers (AIDs), each AID corresponding to a one of a plurality of stations (STAs) comprised in a multiple-user multiple-input and multiple-output (MU-MIMO) STA group, to determine an order of the plurality of STAs;
process a block acknowledgement (BACK) field to determine the STAs instructed to send a BACK based on the determined order of the plurality of STAs;
process a reverse direction (RD) field to determine the STAs instructed to send an RD transmission;
determine a duration of the RD transmission of each STA;
and
determine a time to operate in a power saving mode based on the determined order of the STAs instructed to send a BACK, the determined STAs instructed to send the RD transmission, and the determined duration of the RD transmissions.

6 more elements

Dependencies are inferred from the claim text.

Power saving mechanism for MU-MIMO transmissions

Life of this patent

Power saving mechanism for MU-MIMO transmissions

Life of this patent

Abstract

Claims20