Patent ID: 11936453
Assignee: CISCO TECHNOLOGY, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. An apparatus comprising:
a memory storage; and
a processing unit coupled to the memory storage, wherein the processing unit is operative to:
establish a wireless communication with a receive antenna of a client device over a channel;
perform a first sounding to the receive antenna;
responsive to the first sounding, receive first channel state information (CSI) from the client device at a first time;
based on the first CSI, determine a first precoding matrix;
perform at least a second sounding to the receive antenna;
responsive to the second sounding, receive second CSI from the client device at a second time;
based on the second CSI, determine a second precoding matrix, the second precoding matrix indicating a change in a state of the channel from the state of the channel at the first time of the first sounding to the second time of the second sounding;
based on the first and second precoding matrices, determine a forward- predictive precoding matrix, wherein the forward-predictive precoding matrix comprises a state of the channel at a future time and is consistent with the change in the state of the channel over a time period between the first time of the first sounding and the second time of the second sounding; and
apply the forward-predictive precoding matrix to a data transmission transmitted to the receive antenna of the client device after the second time.