NAICS Interference Cancellation Using UE Capability Signaling
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Solution Overview
Problem
In wireless communication systems, existing methods fail to effectively cancel interference in carrier aggregation scenarios, leading to reduced data reception rates and increased complexity in interference signal detection.
Innovation Solution
The implementation of Network-Assisted Interference Cancellation and Suppression (NAICS) using UE capability information, which includes band combination details, allows for the determination of supported NAICS configurations, enabling interference cancellation by transmitting UE capability information and receiving signals based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Network-Assisted Interference Cancellation and Suppression (NAICS) is implemented to cancel interference in carrier aggregation scenarios, then data reception rates are enhanced, but device complexity and signaling overhead increase
Solution Approach 1:
The patent segments the interference cancellation process into distinct phases: receiving capability information from the network, identifying interference signals based on this information, canceling the interference, and finally receiving the desired signal. This segmentation allows the UE to systematically handle interference without overwhelming complexity.
Solution Approach 2:
The patent applies preliminary action by receiving and processing NAICS capability information from the network before actual interference cancellation is needed. The UE prepares by storing this capability information, which includes parameters for identifying interference signals, so that when interference occurs, the cancellation can proceed efficiently without real-time complexity.
2Reliability
If NAICS capability information is transmitted to enable interference cancellation, then interference suppression is improved, but signaling overhead increases
Solution Approach 1:
The patent makes the capability information multi-functional by designing it to serve multiple purposes: it informs the UE about NAICS support, provides parameters for interference signal identification, and enables the UE to configure its reception accordingly. This universal information structure reduces the need for separate signaling for each function.
Solution Approach 2:
The patent utilizes parameter changes by encoding various NAICS capabilities into a structured capability information message. Instead of separate signaling for each capability, the information is conveyed through parameterized fields that can represent multiple aspects of NAICS functionality, thereby reducing overall signaling overhead.
3Measurement precision
If UE capability information including band combination details is used to determine supported NAICS configurations, then interference cancellation accuracy is improved, but processing complexity at the UE increases
Solution Approach 1:
The patent applies preliminary action by having the network provide capability information in advance, which includes band combination details and NAICS support parameters. The UE stores this information and uses it to guide its interference cancellation process, avoiding the need for complex real-time analysis of all possible configurations.
Solution Approach 2:
The capability information acts as an intermediary between the network and the UE's interference cancellation process. It mediates by providing pre-processed configuration details that the UE can directly use, rather than requiring the UE to independently determine all cancellation parameters, thus reducing processing complexity while maintaining accuracy.
Data Source
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AI summary
The present invention relates to a wireless communication system. According to an embodiment of the present invention, a method for a device receiving a signal by using NAICS (Network-Assisted Interference Cancellation and Suppression) in a wireless communication system that supports carrier aggregation comprises the steps of: transmitting, in carrier aggregation, device capability information comprising band combination information which indicates band combination supported by the device; and receiving a signal on the basis of the device capability information, wherein the band combination information can include a maximum bandwidth supporting the NAICS for the band combination.