Terminal Angular Transmission Reporting Configuration
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Solution Overview
Problem
In wireless communication networks, particularly in LTE and NR standards, terminals face challenges in efficiently reporting angular transmission information due to anisotropic radiation profiles from antenna arrays, where vertical and horizontal PMI variations differ significantly, leading to uneven feedback overhead and identification difficulties.
Innovation Solution
A method and system for configuring terminals to report first and second angular transmission information with distinct timing frequencies, where the quicker varying information is reported more frequently, using a configuration that identifies the slowly varying and frequently varying PMI dimensions separately, and jointly encodes the orthogonal beam group parameter with the more frequently varying PMI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If angular transmission information is reported with uniform timing frequency, then reporting simplicity is maintained, but feedback overhead increases due to reporting quickly varying information as frequently as slowly varying information
Solution Approach 1:
The angular transmission information is segmented into two distinct types: first angular transmission information (quickly varying) and second angular transmission information (slowly varying). Each type is reported with its own dedicated timing configuration, allowing the system to optimize feedback frequency for each information type independently, thereby reducing overall feedback overhead while maintaining accuracy.
Solution Approach 2:
The reporting timing is made dynamic by configuring different time periods for different types of angular transmission information. The first time period for reporting quickly varying information is set shorter than the second time period for slowly varying information, allowing the system to adapt the feedback frequency to the actual variation characteristics of each information type.
2Measurement precision
If reporting frequency is increased for all angular transmission information, then channel state information accuracy is improved, but feedback overhead and signaling load increase
Solution Approach 1:
Instead of uniformly increasing reporting frequency for all angular transmission information, the system applies partial action by increasing frequency only for the first angular transmission information that varies quickly, while maintaining lower frequency for the second angular transmission information that varies slowly. This ensures channel state accuracy for critical fast-varying parameters without generating excessive feedback data volume.
3Productivity
If different timing configurations are used for different angular transmission information, then feedback efficiency is improved, but configuration complexity increases
Solution Approach 1:
The network node implements a universal configuration mechanism that can handle multiple types of angular transmission information with different timing requirements through a unified reporting framework. The configuration indicates first and second time periods for first and second angular transmission information respectively, allowing the same system to efficiently manage diverse reporting needs without requiring separate specialized configurations for each information type.
Data Source
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AI summary
The disclosure pertains to a method for operating a terminal (10) in a wireless communication network, the method comprising performing reporting based on a configuration, the configuration indicating the timing of reporting of first angular transmission information and/or indicating the timing of reporting of second angular transmission information. The disclosure also pertains to related methods and devices.