In-Device Coexistence Parameter Transfer for Radio Interference Mitigation
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Solution Overview
Problem
User equipment with multiple radio sub-systems using different radio access technologies face challenges in managing radio interference effectively, as existing solutions rely on independent management by each sub-system without coordinated resource allocation.
Innovation Solution
Implementing a data interface for transferring in-device co-existence parameters between radio sub-systems to enable coordinated resource allocation and interference mitigation, allowing each sub-system to control its radio resources based on shared information to avoid or reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each radio sub-system manages interference independently by making its own measurements, then each sub-system can operate autonomously, but radio interference between sub-systems cannot be effectively avoided
Solution Approach 1:
The patent merges the independent measurement capabilities of multiple radio sub-systems into a coordinated interference management approach. The first and second radio sub-systems share measurement results and coordinate their resource allocation decisions, transforming independent operations into a unified interference avoidance mechanism while maintaining operational autonomy of each sub-system.
Solution Approach 2:
The patent introduces an intermediary coordination mechanism where measurement results from one radio sub-system are transferred to another sub-system. This intermediary information exchange enables indirect coordination between sub-systems, allowing them to avoid interference without direct control coupling, thus resolving the contradiction between reliability improvement and complexity increase.
2Reliability
If radio sub-systems share information to enable coordinated resource allocation, then interference avoidance is improved, but the complexity of the system increases
Solution Approach 1:
The patent segments the interference management function into distinct measurement and coordination components. Each radio sub-system independently performs measurements and segments the information exchange into specific parameters (measurement results, resource allocation decisions). This segmentation reduces the overall complexity by breaking down the coordinated management into manageable, modular information transfer tasks.
Solution Approach 2:
The patent changes the parameters being transferred between sub-systems from raw measurement data to processed, relevant parameters such as resource allocation indicators and interference levels. This parameter transformation reduces information transfer complexity while maintaining the effectiveness of interference avoidance, as only essential parameters need to be exchanged between sub-systems.
3Productivity
If coordinated resource allocation is implemented between radio sub-systems, then spectrum efficiency is improved, but the ease of operation decreases
Solution Approach 1:
The patent implements self-service mechanisms where each radio sub-system autonomously makes resource allocation decisions based on transferred measurement information. Rather than requiring centralized control or complex coordination protocols, each sub-system serves itself by independently processing received parameters and adjusting its own resource allocation, thereby improving spectrum efficiency while maintaining operational simplicity.
Solution Approach 2:
The patent applies preliminary action by having radio sub-systems exchange measurement information and reach coordination agreements before actual resource allocation occurs. This advance coordination allows sub-systems to pre-determine resource usage patterns that avoid interference, simplifying the actual operation phase as the resource allocation decisions are already optimized through prior information exchange.
Data Source
AI summary
A user equipment including a first radio sub-system configured to use a first radio access technology; a second radio sub-system configured to use a second radio access technology different to the first radio access technology; a data interface configured for transfer of parameters between the first radio sub-system and the second radio sub-system; wherein the a first radio sub-system is configured to send in-device co-existence relevant parameters to second radio sub-system, wherein the in-device co-existence parameter at least indicates a radio resource, in a frequency domain and/or a time domain.