Feedback scheme for mu-mimo
AssigneeIntel Corporation
InventorsHUANING NIU, QINGHUA LI, HONGGANG LI
Life of this patent
Estimating the term…
Abstract
Embodiments of a system and method for managing feedback in a MU-MIMO system. An access point can announce one or more of mobile stations that are to receive downlink information in a first frame. The access point can also send a sounding package to the one or more mobile stations and receive feedback from the one or more mobile stations according to the feedback schedule. The feedback may be based on the reception of the sounding package.
Claims20
A method for managing feedback in a multiple user multiple input multiple output (MU-MIMO) system, the method comprising:
- announcing one or more mobile stations that are to receive downlink information in a first frame;
- sending a sounding package to the one or more mobile stations;
- assigning a feedback schedule for the one or more mobile stations;
- and
- receiving feedback from the one or more mobile stations according to the feedback schedule, the feedback based on reception of the sounding package.
A method for generating feedback at a first mobile station in a multiple user multiple input multiple output (MU-MIMO) system, the method comprising:
- receiving a sounding package from an access point;
- calculating a number of streams for other mobile stations to be transmitted in a downlink frame;
- determining a feedback matrix for streams intended for the first mobile station based on the number of streams and a reception quality of the sounding package, wherein a feedback matrix type and dimension is specified in the sounding package;
- and
- sending the feedback matrix to the access point.
An system comprising:
- an access point configured to:
- announce one or more mobile stations that are to receive downlink information in a frame;
- send a sounding package to the one or more mobile stations;
- assign a feedback schedule for the one or more mobile stations;
- and
- receive feedback from the one or more mobile stations according to the feedback schedule, the feedback based on reception of the sounding package.
Dependencies are inferred from the claim text.