Methods and systems for coordinating distributed MIMO communications
AssigneeQUALCOMM Incorporated
InventorsGeorge Cherian, Simone Merlin, Alfred Asterjadhi, Yan Zhou, Abhishek Pramod Patil, Venkata Ramanan Venkatachalam Jayaraman
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Abstract
Methods and systems for coordinating simultaneous transmission by two or more access points over a single channel of a wireless medium are disclosed. In one aspect, a method includes determining, by a first access point, a time when the first access point and a second access point will transmit simultaneously over the channel, and transmitting, by the first access point, over the channel at the time.
Claims16
A method of coordinating simultaneous transmission over a single channel of a wireless medium, the method comprising:
- performing, by a first access point associated with a first basic service set (BSS), a countdown procedure simultaneously with a second access point associated with a second BSS, wherein the first and second access points are each capable of initiating a simultaneous transmission of a distributed multiple-input and multiple-output (MIMO) communication from the first and second access points, the distributed MIMO communication comprising the first access point transmitting, to the second access point, first communications configured to facilitate second communications between the second access point and one or more wireless stations included in the second BSS;
- in response to completing the countdown procedure before the second access point, transmitting, from the first access point to the second access point, a first frame indicating that the simultaneous transmission will occur at a predetermined amount of time after a receipt of the first frame;
- determining, by the first access point, that the single channel is idle;
- and
- after the predetermined amount of time, transmitting over the single channel, from the first access point, and simultaneously with the second access point, data for the distributed MIMO communication.
An apparatus for coordinating simultaneous transmissions over a single channel of a wireless medium, the apparatus being associated with a first basic service set (BSS) and comprising:
- one or more processors;
- and
- a memory comprising instructions that, when executed by the one or more processors, cause the apparatus to:
- perform a countdown procedure simultaneously with an access point associated with a second BSS, wherein the apparatus and the access point are each capable of initiating a simultaneous transmission of a distributed multiple-input and multiple-output (MIMO) communication from the apparatus and the second access point, the distributed MIMO communication comprising the apparatus transmittinq, to the access point, first communications configured to facilitate second communications between the access point and one or more wireless stations included in the second BSS;
- in response to completing the countdown procedure before the access point, transmit, to the access point, a first frame indicating that the simultaneous transmission will occur at a predetermined amount of time after a receipt of the first frame;
- determine that the single channel is idle;
- and
- after the predetermined amount of time, transmit over the single channel, simultaneously with the access point, data for the distributed MIMO communication.
Dependencies are inferred from the claim text.