In-Device Coexistence Interference Cancellation in User Terminals
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Solution Overview
Problem
In-device coexistence (IDC) interference, where multiple wireless transceivers in a user terminal experience interference from each other, leading to reduced performance and reliability in wireless communication.
Innovation Solution
A method where a user terminal sends interference-cancellation assistance information to a network-side device, which configures and sends interference-cancellation configuration information to stop uplink or downlink transmissions based on the assistance information, allowing the terminal to adjust its communication behavior to mitigate IDC interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple wireless transceivers operate simultaneously in a user terminal, then device functionality and versatility are improved, but interference between transceivers increases
Solution Approach 1:
The patent applies preliminary action by having the user terminal report interference-cancellation assistance information to the network-side device before actual interference occurs. The network device uses this advance information to configure and transmit interference-cancellation configuration information, which instructs the terminal to stop uplink or downlink transmissions in specific spaces or channels before interference happens, thereby preventing the harmful effects of in-device coexistence interference.
2Object-affected harmful factors
If the user terminal stops uplink or downlink transmissions to reduce interference, then interference level is reduced, but communication productivity decreases
Solution Approach 1:
The patent applies local quality by providing targeted interference cancellation rather than blanket transmission stops. The network-side device configures space-domain information that specifies particular spatial directions or channels where interference occurs, and the user terminal selectively stops transmissions only in those specific spaces or channels while maintaining normal communications in other areas, thereby reducing interference locally without unnecessarily halting overall communication productivity.
3Measurement precision
If the user terminal continuously monitors and reports interference conditions, then interference management accuracy is improved, but device complexity and energy consumption increase
Solution Approach 1:
The patent applies feedback by establishing a structured information exchange mechanism where the user terminal reports interference-cancellation assistance information to the network-side device, which then sends back interference-cancellation configuration information. This feedback loop enables accurate interference management through coordinated action between terminal and network, while the standardized feedback protocol helps control device complexity by providing clear guidelines on what information to monitor and report.
Data Source
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AI summary
An interference processing method, a user terminal and a network-side device are provided. The method includes sending interference-cancellation assistance information to a network-side device; receiving interference-cancellation configuration information sent by the network-side device according to the interference-cancellation assistance information, wherein, the interference-cancellation configuration information includes at least one of configuration information for stopping uplink transmission and configuration information for stopping downlink reception; and in case that interference occurs, performing an interference processing behavior according to the interference-cancellation configuration information, wherein the interference processing behavior includes at least one of stopping uplink transmission and stopping downlink reception.