Base Station Downlink Layer Scheduling Using RI and CQI Feedback
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Solution Overview
Problem
The fluctuation of terminal data and wireless channel during downlink scheduling of a base station is significant due to the complex and changeable wireless environment, leading to unreliable scheduling.
Innovation Solution
A method and apparatus that detect Rank Indicator (RI) and Channel Quality Indicator (CQI) data from terminals, query layer number adjustment conditions, and determine a target scheduling layer number based on these indicators to stabilize downlink scheduling, using a state conversion model to adjust layer numbers according to specific constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station schedules data for multiplexing at different layers according to the channel correlation matrix rank information reported by the terminal, then the peak data rate is improved, but the scheduling fluctuation increases and reliability decreases
Solution Approach 1:
The patent changes the parameters used for scheduling decisions from solely relying on channel correlation matrix rank to incorporating multiple parameters including RI (Rank Indicator), CQI (Channel Quality Indicator), and scheduling layer number. This multi-parameter approach smooths out fluctuations in individual parameters and improves scheduling reliability while maintaining peak data rate performance
Solution Approach 2:
The patent implements a feedback mechanism where the terminal reports RI and CQI information to the base station, and the base station uses this feedback along with scheduling layer number to make adaptive scheduling decisions. This closed-loop feedback system allows the base station to adjust scheduling parameters dynamically, reducing ping-pong effects and improving overall scheduling reliability
2Device complexity
If the base station uses only the channel correlation matrix rank information for scheduling, then the implementation is simple, but the scheduling has significant fluctuation and ping-pong scheduling
Solution Approach 1:
The patent merges multiple scheduling parameters (RI, CQI, and scheduling layer number) into a unified scheduling decision-making process. By combining these parameters, the system achieves more stable scheduling outcomes without requiring overly complex implementation, as each parameter provides complementary information about channel conditions
Data Source
AI summary
Disclosed in the present disclosure are a method and an apparatus of controlling downlink scheduling of a base station, a storage medium, and an electronic apparatus. The method includes: detecting Rank Indicator (RI) data corresponding to RI information, the RI information and the CQI information being reported by the terminal within the current period and Channel Quality Indicator (CQI) data corresponding to CQI information; querying, from one or more layer number adjustment conditions corresponding to a current scheduling layer number, a target layer number adjustment condition that the RI data and the CQI data meet; and determining a target scheduling layer number corresponding to the target layer number adjustment condition to be a scheduling layer number used by the base station within a target period, wherein the target period is a period after the current period. The present disclosure solves the problem in the related art of the fluctuation of terminal data and a wireless channel being relatively significant during the downlink scheduling of the base station.