Terminal Channel State Feedback for Beam Selection
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Solution Overview
Problem
Conventional beam training processes in communication systems are inefficient, leading to low communication efficiency due to the reporting of channel state information for multiple beams, which increases signaling overheads and reduces communication quality.
Innovation Solution
A method where a terminal receives and processes multiple reference signal groups simultaneously, sending indication information about the channel state of select reference signals to a network device, allowing it to choose optimal beams for data transmission, thereby improving communication efficiency and quality while reducing signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal reports information about multiple beams with relatively high communication quality, then the network device can communicate with the terminal on each optimal beam, but the signaling overheads increase and communication efficiency decreases
Solution Approach 1:
The patent segments the beam reporting process by introducing a maximum quantity parameter. The terminal divides its beam selection into two parts: beams that meet the maximum quantity threshold are reported, while beams exceeding this threshold are not reported. This segmentation resolves the contradiction by limiting the reporting scope to a manageable size, improving communication efficiency while still capturing the most important beams for maintaining high communication quality.
Solution Approach 2:
The patent introduces a configurable parameter (maximum quantity of beams) that can be adjusted to balance communication quality and efficiency. By changing this parameter, the system can adapt to different scenarios: a higher maximum quantity captures more optimal beams for better quality, while a lower maximum quantity reduces overhead for better efficiency. This parameter change mechanism allows dynamic optimization of the contradiction.
2Adaptability or versatility
If the terminal reports information about multiple beams, then more beam options are available for the network device, but the data amount increases and signaling overheads increase
Solution Approach 1:
The patent applies partial action by having the terminal report only a partial set of beams (those within the maximum quantity limit) rather than all detected beams. This partial reporting provides sufficient beam options for the network device to select from, maintaining adaptability while significantly reducing the data amount and signaling overheads associated with reporting every possible beam.
3Loss of information
If the terminal reports channel state information for all detected beams, then complete channel state information is provided, but the signaling overheads increase
Solution Approach 1:
The patent extracts only the most essential channel state information by having the terminal identify and report beams with relatively high communication quality, rather than reporting all detected beams. This extraction approach provides the network device with the most relevant channel state information needed for effective communication, while significantly reducing signaling overheads by excluding information about less important beams.
Data Source
AI summary
This application provides a method which includes: receiving, by a terminal, N reference signal groups, where each of the N reference signal groups includes at least two reference signals that are simultaneously received; and sending indication information used to indicate channel state information of at least one reference signal in each of K reference signal groups. Therefore, the terminal can feed back the channel state information of the reference signal in a scenario in which a plurality of reference signals can be simultaneously received, so that a network device selects a beam from a plurality of beams that can be simultaneously sent to send data.