Multi-Carrier Control Channel False Detection Reduction
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Solution Overview
Problem
Wireless communication systems with multiple carriers face challenges in reducing false detections of control channels, leading to increased false alarm probabilities and bandwidth blocking, especially as the number of monitored carriers increases.
Innovation Solution
The implementation of a reference carrier, control channel bundling, and dummy control channels to validate detected control channels, where a reference carrier is designated to initiate blind detection, bundling groups multiple channels for validation, and dummy control channels provide guidance and validation during the detection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple component carriers are monitored to increase bandwidth and data rates, then system throughput is improved, but false detection probability of control channels increases
Solution Approach 1:
The patent segments the control channel detection process by designating one carrier as a reference carrier and others as non-reference carriers. The UE performs blind detection on the reference carrier first, and only continues to non-reference carriers if detection succeeds on the reference carrier. This segmentation reduces the total number of blind detection attempts across multiple carriers, thereby reducing false detection probability while maintaining the ability to utilize multiple carriers for high throughput.
2Measurement precision
If blind detection is performed on all component carriers to ensure control channel detection, then detection coverage is improved, but bandwidth blocking increases
Solution Approach 1:
The patent applies preliminary action by requiring successful blind detection on the reference carrier before proceeding to detect control channels on non-reference carriers. This preliminary check filters out invalid detection attempts early in the process, reducing the overall bandwidth blocking caused by false alarms while maintaining comprehensive detection coverage for valid control channels across all carriers.
Data Source
AI summary
Systems and methodologies are described that facilitate reducing false detections of control channels during blind decode when multiple component carriers are configured. A UE can perform blind detection of control channels on a plurality of carriers, wherein each control channel detected can be validated to reduce false detections. In one aspect, a reference carrier can be selected, wherein one or more detected control channels are validated so long as one detected control channel is on the reference carrier. In another aspect, control channel can be bundled such that multiple control channel detections are required for validation. Moreover, dummy control channels can be introduced that provide UE with guidance during blind decoding, as well as provide validation of detections. Further, various combinations of a reference carrier, bundling, and/or a dummy control channel can be utilized.