Carrier Selection by Frequency Proximity
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Solution Overview
Problem
In wireless communication systems, adding carriers with substantially different propagation characteristics can lead to uneven coverage areas and interference issues when carrier frequencies vary, affecting the ability of user equipment (UEs) to communicate effectively.
Innovation Solution
A method where a wireless communication system selects an additional carrier based on its proximity to the existing carrier set in the frequency spectrum to maintain consistent coverage and prevent interference, by determining the closest candidate carrier and adding it to the set to establish a modified set of carriers for serving UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If carriers with substantially different propagation characteristics are added to increase bandwidth, then the bandwidth available to UEs is increased, but uneven coverage areas and interference issues occur
Solution Approach 1:
The patent applies parameter changes by selecting carriers based on their frequency proximity to existing carriers in the aggregated set. Instead of arbitrarily adding any available carrier, the system changes the selection parameter to frequency distance, ensuring that only carriers with similar propagation characteristics (those closest in frequency) are added. This resolves the contradiction by maintaining coverage consistency while still increasing bandwidth through carrier aggregation.
2Quantity of substance
If carriers with substantially different propagation characteristics are added to increase bandwidth, then the bandwidth available to UEs is increased, but interference issues occur
Solution Approach 1:
The patent changes the carrier selection parameter from any available carrier to the carrier with minimum frequency distance to the existing aggregated carriers. This parameter change ensures that carriers with similar propagation characteristics are selected, which reduces interference issues while still achieving bandwidth increase through carrier aggregation.
3Quantity of substance
If any available carrier is added to increase bandwidth, then the bandwidth available to UEs is increased, but the complexity of carrier selection increases
Solution Approach 1:
The patent simplifies the carrier selection process by changing the selection criterion to a single clear parameter: frequency proximity. Instead of evaluating multiple complex factors, the system simply identifies the carrier with the minimum frequency distance to existing aggregated carriers. This reduces selection complexity while still achieving bandwidth expansion.
Data Source
AI summary
Disclosed is a method and system for managing carriers on which a wireless communication system serves a UE. As disclosed, the system serves the UE on a set of one or more carriers. While serving the UE on the set of one or more carriers, the system determines that the UE should additionally be served on at least one other carrier. The system then selects the at least one other carrier, from a set of candidate carriers, based at least in part on the at least one other carrier being closest, of the set of candidate carriers, in the frequency spectrum to the set of one or more carriers. Based on the selecting, the system then adds the selected at least one other carrier to the set of one or more carriers to establish a modified set of carriers and serves the UE on the modified set of carriers.