CQI Table Configuration for Reliable Low-Rate CSI Reporting
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Solution Overview
Problem
Existing communication technologies, particularly in LTE and 5G systems, fail to provide adequate data transmission reliability and lower data transmission rates for MTC terminals and 5G terminals, especially in scenarios requiring coverage enhancement.
Innovation Solution
A method and apparatus for receiving and transmitting CQI information using customized CQI tables that include specific configurations for different coverage levels, terminal categories, and channel coding types, allowing for higher data transmission reliability and lower data transmission rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal sends A-CSI and L-CSI separately on different uplink resources, then the CSI information can be transmitted without mutual interference, but the uplink resource occupation increases and transmission efficiency decreases
Solution Approach 1:
The patent combines A-CSI and L-CSI into a single PUSCH resource for transmission. The terminal multiplexes both CSI types in the same uplink channel, using different resource allocation mechanisms (frequency domain resources for A-CSI, time domain resources for L-CSI) to avoid mutual interference while improving resource utilization efficiency
Solution Approach 2:
The patent introduces multi-dimensional resource allocation for CSI transmission by utilizing both frequency domain and time domain dimensions. A-CSI is allocated specific frequency domain resources while L-CSI uses time domain multiplexing, transforming the problem from one-dimensional resource conflict to multi-dimensional resource coordination
2Productivity
If the network configures multiple CSI report resources for the terminal to monitor, then the CSI transmission opportunities increase, but the terminal's uplink resource occupation increases and power consumption increases
Solution Approach 1:
The patent makes a single PUSCH resource serve multiple CSI transmission functions by enabling it to carry both A-CSI and L-CSI simultaneously. This multi-functional resource usage reduces the need for multiple dedicated resources while maintaining diverse CSI transmission opportunities
Solution Approach 2:
The patent changes the resource allocation parameters by configuring frequency domain resources and time domain resources for CSI transmission. By adjusting these parameters, the system optimizes the balance between transmission opportunities and resource consumption, reducing terminal power usage while maintaining CSI reporting effectiveness
Data Source
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AI summary
The present disclosure provides a method and an apparatus for receiving Channel Quality Indication (CQI) information, as well as a method and an apparatus for transmitting CQI information. The method for receiving CQI information includes: transmitting a higher layer configuration signaling message to a terminal; and receiving CQI information from the terminal. The CQI information is determined based on a CQI table obtained based on the higher layer configuration signaling message. With the above solutions, higher data transmission reliability and lower data transmission rate required for MTC terminals with coverage enhancement and 5G terminals can be achieved.