Base Station Feedback Control for Uplink Resource Optimization
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Solution Overview
Problem
The increasing demand for uplink channel resources due to enhanced communication capacity and simultaneous hits leads to excessive consumption of resources in communication systems, necessitating a more efficient method for handling feedback information from terminals to base stations.
Innovation Solution
A communication method that involves transmitting a feedback control message containing information about target received power and channel quality indicators, allowing for scheduling based on channel quality and resource allocation modes, including compressed sensing and orthogonal resource allocation, to optimize feedback information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback information is transmitted from all terminals simultaneously with increased communication capacity, then communication quality is improved, but uplink channel resource consumption increases excessively
Solution Approach 1:
Multiple terminals transmit feedback information simultaneously using the same uplink resource (PUCCH or PUSCH) through superposition coding. The base station recovers individual feedback messages by solving a system of equations, enabling resource consolidation while maintaining communication quality for multiple terminals
Solution Approach 2:
The uplink feedback channel is designed to serve multiple terminals simultaneously through compressed sensing technology. A single uplink resource block can carry feedback from multiple terminals by encoding their messages in a shared signal space, making the channel universally usable for group feedback transmission
2Area of stationary object
If the number of terminals reporting feedback information increases, then network coverage is improved, but the demand for uplink channel resources increases
Solution Approach 1:
Feedback resources are merged across multiple terminals through compressed sensing. Instead of allocating separate uplink resources to each terminal, the system combines multiple feedback transmissions into shared resource blocks, reducing overall resource demand as network coverage expands
Solution Approach 2:
The system changes the transmission parameter from dedicated per-terminal resources to shared group resources. By adjusting the resource allocation strategy from individual to collective usage, the system accommodates more terminals within the same resource constraints
3Measurement precision
If channel quality indicators are transmitted frequently to maintain scheduling accuracy, then scheduling precision is improved, but feedback information amount increases
Solution Approach 1:
Multiple feedback messages including channel quality indicators are merged into shared uplink transmissions. The compressed sensing framework enables the base station to separate and recover individual CQI values from combined signals, maintaining scheduling precision while reducing total feedback overhead
Solution Approach 2:
The system extracts individual channel quality indicator information from combined feedback transmissions. By separating the desired CQI data from the superposed signal at the base station, the system maintains measurement precision while efficiently utilizing shared feedback resources
Data Source
AI summary
Provided is a communication method of a base station and a terminal for enhancing a recovery performance of a signal using a feedback control message. The feedback control message may include information about a target received power at the base station with respect to feedback information of each of a plurality of terminals and information associated with a feedback mode of the feedback information.