Channel Correction for Distributed Radio Frequency Apparatuses
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Solution Overview
Problem
In wireless communications, existing channel correction methods for distributed multiple-input multiple-output (DMIMO) scenarios are inadequate due to rapid phase changes between radio frequency apparatuses in different environments, leading to inefficiencies and performance gaps.
Innovation Solution
A channel correction method and apparatus that groups radio frequency apparatuses into clusters, allowing each to send and receive correction signals at predetermined resource locations, enabling concurrent channel correction and optimizing resource allocation based on isolation and grouping factors to improve efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If channel correction is performed between multiple radio frequency apparatuses in DMIMO scenario, then channel correction accuracy is improved, but channel correction cycle increases and efficiency decreases
Solution Approach 1:
The patent segments the channel correction process into two distinct parts: intra-group correction (within each radio frequency apparatus group) and inter-group correction (between different groups). This segmentation allows intra-group corrections to be performed frequently and independently, reducing the overall correction cycle time, while inter-group corrections are performed less frequently to maintain accuracy without excessive time consumption.
Solution Approach 2:
The patent performs preliminary channel correction within each radio frequency apparatus group before performing inter-group correction. This preliminary intra-group correction prepares the system by establishing baseline corrections, which then enables more efficient and targeted inter-group corrections, reducing the total time required for complete channel correction.
2Measurement precision
If channel correction is performed frequently to track fast phase changes, then channel correction accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent segments correction signaling into two types: intra-group correction signals that can be exchanged locally between apparatuses in the same group, and inter-group correction signals that require coordination with the network. This segmentation reduces overall signaling overhead by allowing frequent intra-group corrections to occur with minimal network involvement.
Solution Approach 2:
The patent performs preliminary intra-group channel correction before inter-group correction, establishing baseline correction parameters within groups. This preliminary action reduces the amount of information that needs to be signaled during subsequent inter-group corrections, as many correction parameters have already been determined at the group level.
3Productivity
If radio frequency apparatuses are deployed separately in DMIMO scenario, then system capacity is improved, but channel correction complexity increases
Solution Approach 1:
The patent segments the distributed radio frequency apparatuses into multiple groups, where apparatuses within each group are geographically or functionally clustered. This segmentation simplifies channel correction by allowing groups to perform self-contained intra-group corrections independently, reducing the overall correction complexity despite the distributed deployment architecture.
Solution Approach 2:
The patent performs preliminary channel estimation and correction within each group before coordinating inter-group corrections. This preliminary group-level correction simplifies the overall process by reducing the dimensionality of the correction problem, making it more manageable despite the complexity introduced by distributed apparatus deployment.
Data Source
AI summary
A channel correction method, used for performing channel correction on radio frequency apparatuses in a network area, is provided. The radio frequency apparatuses are divided into at least one radio frequency apparatus group. A correction resource location is set for each radio frequency apparatus in the radio frequency apparatus group. These resource locations may be stored in a form of configuration information in base stations where the radio frequency apparatuses are located, so that the base station controls each of these radio frequency apparatuses to send a correction signal in a respective correction resource location based on the configuration information, and to implement, by using these correction signals, channel correction for the radio frequency apparatuses in the radio frequency apparatus group. The method can implement joint channel correction for a plurality of radio frequency apparatuses and improve correction efficiency.