Carrier Aggregation Interference Mitigation via Dynamic Switching
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Solution Overview
Problem
Wireless devices face interference from disparate wireless technologies operating on neighboring frequencies, leading to issues like packet loss and disconnection, which existing filtering technologies and handover procedures fail to adequately address due to latency and cost concerns.
Innovation Solution
Implementing carrier aggregation technology that allows user devices and base stations to dynamically switch data and control transmissions from a primary component carrier to secondary component carriers when interference is detected, using configuration and activation information to mitigate interference without requiring backhaul network communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If filtering technology is used to suppress interfering signals, then interference mitigation is improved, but device cost increases
Solution Approach 1:
The patent replaces physical filtering hardware with a software-based carrier aggregation mechanism. The system dynamically switches between component carriers using control logic and signaling protocols, eliminating the need for expensive analog filters while achieving the same interference mitigation goal through digital signal routing and network coordination.
Solution Approach 2:
The patent changes the operating frequency parameter by switching between different component carriers (e.g., from 700 MHz to 2.6 GHz). This parameter change allows the system to avoid interfering frequency bands dynamically, achieving interference mitigation through frequency domain diversity rather than physical filtering.
2Object-affected harmful factors
If handover procedure is used to switch to a non-interfering frequency, then interference mitigation is improved, but latency increases
Solution Approach 1:
The patent performs preliminary actions by pre-configuring multiple component carriers and maintaining readiness states for secondary carriers. When interference is detected, the system can rapidly activate a pre-prepared secondary carrier without full handover procedures, significantly reducing switching latency while maintaining interference mitigation capability.
Solution Approach 2:
The patent implements dynamic carrier aggregation where the system can flexibly activate or deactivate secondary component carriers based on real-time interference conditions. This dynamic approach allows rapid adaptation to changing interference patterns without the rigid, time-consuming handover procedures of traditional systems.
3Object-affected harmful factors
If carrier aggregation is implemented to dynamically switch carriers, then interference mitigation is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal carrier aggregation framework that can handle multiple interference scenarios across different frequency bands and technologies. The same basic mechanism (activating secondary carriers) works for various interference types, reducing the need for multiple specialized solutions and simplifying overall system design despite the added functionality.
Data Source
AI summary
A system for interference mitigation through carrier aggregation may include one or more processors and a memory. The memory may include instructions that, when executed by the one or more processors, cause the one or more processors to: provide data transmissions and control transmissions to a wireless device over a primary component carrier, determine that interference exists on the primary component carrier, and switch at least a portion of the data or control transmissions to a secondary component carrier in response to determining that the interference exists on the primary component carrier, while maintaining connectivity on the primary component carrier.