Adaptive channel sounding
AssigneeHewlett Packard Enterprise Development LP
InventorsJianpo Han, Zhenlei Wang, Qiang Zhou
Life of this patent
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Abstract
In embodiments of the present disclosure, there is provided an approach for channel sounding. According to embodiments of the present disclosure, if the CSI change rate exceeds a first threshold, the AP may disable the beamforming. If the CSI change rate does not exceed the first threshold but exceeds a second threshold below the first threshold, the AP may perform the channel sounding at a first time interval. Otherwise, if the CSI change rate does not exceed the second threshold, the AP may perform the channel sounding at a second time interval. Embodiments of the present disclosure provide an effective way for channel sounding.
Claims20
An access point comprising:
- a processor;
- and
- a memory coupled to the processor, the memory storing instructions to cause the processor to perform acts comprising:
- determining, based on frames received from a client, channel state information (CSI) of a channel between the client and the access point;
- determining, based on the CSI, a configuration about channel sounding between the access point and the client;
- determining that a difference between the CSI and a reference CSI for the channel between the client and the access point exceeds a threshold;
- based on the difference exceeding the threshold and the configuration about the channel sounding, determining that beamforming is enabled for the client;
- and
- in response to the configuration indicating that the beamforming is enabled for the client, performing the channel sounding based on the configuration.
A method comprising:
- determining, at an access point and based on uplink frames received from a client, channel state information (CSI) of a channel between the client and the access point;
- determining, based on the CSI, a configuration about channel sounding between the access point and the client;
- determining that a difference between the CSI and a reference CSI for the channel between the client and the access point exceeds a threshold;
- based on the difference exceeding the threshold and the configuration about the channel sounding, determining that beamforming is enabled for the client;
- and
- in response to the configuration indicating that the beamforming is enabled for the client, performing the channel sounding based on the configuration.
A non-transitory machine-readable medium comprising machine-executable instructions that when executed on a device, cause the device to:
- determine, based on frames received from a further device, channel state information (CSI) of a channel between the further device and the device;
- determine, based on the CSI, a configuration about channel sounding between the device and the further device;
- determine that a difference between the CSI and a reference CSI for the channel between the further device and the device exceeds a threshold;
- based on the difference exceeding the threshold and the configuration about the channel sounding, determine that beamforming is enabled for the further device;
- and
- in response to the configuration indicating that the beamforming is enabled for the further device, perform the channel sounding based on the configuration.
Dependencies are inferred from the claim text.