Carrier Aggregation Thresholds for Diverse 5G Secondary Carriers
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Solution Overview
Problem
Carrier aggregation techniques in wireless communication face challenges with higher frequency bands and diverse bandwidths, leading to inefficiencies and delays, particularly in 5G NR networks, due to the use of a single threshold value for activating and deactivating secondary cells across carriers with varying bandwidths and deployment configurations.
Innovation Solution
Implementing flexible threshold values based on carrier characteristics such as bandwidth, duplexing mode, and deployment scenarios to optimize activation and deactivation of secondary cells, thereby achieving load balancing and minimizing congestion and delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single threshold value is used for activating and deactivating secondary cells across all carriers, then the system is simple to operate, but it leads to inefficiencies and delays in 5G NR networks with diverse bandwidths and frequency bands
Solution Approach 1:
The patent applies local quality by configuring different threshold values for different carriers based on their specific characteristics. Each carrier (component carrier) is assigned a customized threshold value that reflects its bandwidth, frequency band, and deployment scenario, allowing optimal activation/deactivation decisions for each carrier individually rather than using a uniform threshold across all carriers
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting threshold values according to carrier characteristics such as bandwidth size, frequency band (e.g., sub-6GHz vs. mmWave), and deployment configuration. The threshold values are modified based on these parameters to optimize network performance for diverse 5G NR scenarios
2Power
If carrier aggregation is activated for all carriers regardless of their characteristics, then data rate per user increases, but congestion and delays occur particularly in carriers with smaller bandwidths
Solution Approach 1:
The patent changes the threshold parameter based on carrier bandwidth characteristics. Carriers with larger bandwidths are assigned lower threshold values, allowing them to be activated more readily to provide high data rates. Carriers with smaller bandwidths are assigned higher threshold values, preventing their activation unless truly necessary, thereby avoiding congestion and delays
Solution Approach 2:
The patent applies different activation criteria to different carriers based on their individual characteristics. Each carrier's activation decision is made locally based on its specific bandwidth, frequency band, and current network conditions, rather than applying a blanket activation policy across all carriers
3Productivity
If flexible threshold values are implemented based on carrier characteristics, then load balancing and resource utilization improve, but the system complexity increases
Solution Approach 1:
The patent segments the threshold configuration into carrier-specific parameters. Instead of managing a single system-wide threshold, the threshold values are segmented and configured individually for each carrier based on its characteristics. This segmentation allows for optimized resource utilization while distributing the complexity management across multiple independent carrier configurations
Data Source
AI summary
Systems, methods, and devices that relate to flexible thresholds for activating and deactivating carrier aggregation are disclosed. In one example aspect, a method for wireless communication includes determining, by the base station, a set of carrier aggregation candidates. Each carrier aggregation candidate in the set of carrier aggregation candidates corresponds to a secondary component carrier and is associated with an activation threshold value and a deactivation threshold value that are determined based on a characteristic of the secondary component carrier. The method also includes determining, by the base station, a traffic load of the communication and transmitting, by the base station, a command to the user equipment to activate or deactivate a first carrier aggregation candidate in the set of carrier aggregation candidates based on the traffic load and the activation threshold value or the deactivation threshold value associated with the first carrier aggregation candidate.