Adaptive Channel State Feedback Based on Channel Estimation Characteristics and Reporting Requirements

An apparatus, comprising:

• a communications circuit configured to communicate over a channel during a plurality of reception cycles, wherein the communications circuit comprises:
• a memory configured to store one or more prior channel state feedback (CSF) reports from one or more prior reception cycles;
• and
• one or more processors configured to:
• perform a comparison based on a cycle length of a current reception cycle and a point in time at which a current CSF report is to be sent;
• based on the comparison, select between generating new content for the current CSF report and reusing prior content from at least one of the one or more prior CSF reports for the current CSF report;
• and
• cause the current CSF report to be sent to a base station over the channel.

A non-transitory computer readable storage medium storing program instructions that, when executed by one or more processors, cause the one or more processors to carry out operations comprising:

• communicating over a channel during at least one prior reception cycle;
• selecting content of a current channel state feedback (CSF) report of the channel for a current reception cycle, comprising:
• performing a comparison between a first point in time at which CSF values of the current reception cycle are predicted to be stable and a second point in time at which the current CSF report is to be sent;
• based on determining that the first point in time occurs before the second point in time, generating new content for the current CSF report;
• and
• based on determining that the first point in time occurs after the second point in time, reusing prior content from at least one prior CSF report for the current CSF report;
• and
• causing the current CSF report to be sent to a base station via the channel.

A method, comprising:

• causing, by one or more processors, communications over a channel with a base station during one or more previous reception cycles;
• selecting, by the one or more processors, content of a current channel state feedback report (CSF) for a current reception cycle, comprising:
• determining, by the one or more processors, a first point in time at which CSF values of the current reception cycle are predicted to be stable;
• performing, by the one or more processors, a comparison between the first point in time and a second point in time at which the current CSF report is to be sent;
• and
• in response to determining that the first point in time occurs after the second point in time, identifying, by the one or more processors, a previous CSF report from a previous reception cycle;
• and
• causing the previous CSF report to be sent as the current CSF report to a base station.