IDC Interference Cancellation via Assistance Configuration in 5G Multi-Connectivity
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Solution Overview
Problem
In-Device Coexistence (IDC) interference in multi-connectivity scenarios of 5G communication systems, where multiple wireless transceivers on a user terminal experience interference from different Radio Access Technologies, leading to reduced reliability and throughput in data transmission.
Innovation Solution
The method involves sending IDC assistance information from a user terminal to a network-side device, which configures assistance configuration information for interference cancellation, including time-domain, frequency-domain, and space-domain assistance, to reduce or eliminate IDC interference by identifying and managing interfering resources and technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple wireless transceivers are supported in a user terminal for multi-connectivity, then adaptability and functionality are improved, but IDC interference occurs between different radio access technologies
Solution Approach 1:
The patent introduces an interference indication message as an intermediary mechanism between the user terminal and network device. This message carries interference indication information that enables the network device to identify and manage interfering resources, thereby resolving the IDC interference problem while maintaining multi-connectivity functionality
2Reliability
If interference cancellation configuration information is configured for all resources, then IDC interference reduction is improved, but signaling overhead and system complexity increase
Solution Approach 1:
The patent applies local quality by configuring interference cancellation only for specific interfering resources identified through the interference indication message, rather than all resources. The network device determines the interfering resource based on the indication information and configures assistance configuration information selectively, thereby reducing signaling overhead while maintaining effective interference cancellation where needed
3Measurement precision
If interference indication information is transmitted to identify interfering resources, then interference management precision is improved, but communication overhead increases
Solution Approach 1:
The patent implements partial action by transmitting only the necessary interference indication information for identifying interfering resources, rather than complete interference characterization data. The interference indication message contains sufficient information for the network device to determine the interfering resource and configure appropriate cancellation, achieving precise interference management with minimized overhead
Data Source
AI summary
A method of transmitting configuration information and a related device are provided. The method includes sending IDC assistance information to a network-side device, wherein the network-side device includes at least one of an MN and an SN; receiving assistance configuration information of IDC interference cancellation sent by the network-side device, wherein the assistance configuration information of IDC interference cancellation corresponds to the IDC assistance information.