Base Station Carrier Aggregation Noise Control

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Solution Overview

Problem

High uplink noise levels on carriers in cellular wireless networks can impede a base station's ability to decode communications from UEs, particularly when serving multiple UEs concurrently, which can limit data throughput and quality of service.

Innovation Solution

The base station dynamically prevents a carrier from being added as a secondary carrier for carrier-aggregation service when high uplink noise is detected, allowing UEs to maintain primary connectivity while avoiding increased noise levels by flagging the carrier in its records and potentially removing it from existing radio-link-layer connections, with the configuration being temporary or lasting until noise levels decrease.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a carrier is added as a secondary carrier for carrier-aggregation service to increase data throughput, then the data rate and quality of service are improved, but the uplink noise level increases which impedes the base station's ability to decode communications

Engineering Contradiction:

Improvedata throughputVSAvoiduplink noise level

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The base station monitors uplink noise levels on carriers and uses this feedback information to dynamically control whether carriers are added as secondary carriers for carrier aggregation. When high uplink noise is detected, the base station prevents adding the carrier as a secondary carrier, thereby maintaining decoding capability while still allowing primary connectivity

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts carrier configuration based on real-time noise conditions. The base station can temporarily prevent a carrier from being added as a secondary carrier when high uplink noise is detected, and this configuration can be changed when noise levels decrease, making the system adaptive to changing channel conditions

Inventive Principle:

Principle #15Dynamics

2Quantity of substance

If multiple UEs are served concurrently on a carrier to increase network capacity, then the network capacity is improved, but the uplink noise level increases which limits data throughput

Engineering Contradiction:

Improvenumber of served UEsVSAvoiduplink noise level

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The base station monitors uplink noise levels as feedback from serving multiple UEs and adjusts carrier aggregation configuration accordingly. When noise exceeds thresholds due to multiple concurrent UEs, the system prevents adding noisy carriers as secondary carriers

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11006470B1Controlling use of carrier as secondary carrier for carrier-aggregation service

Publication Date: 2021.05.11 SPRINT SPECTRUM LLC

AI summary

A method and system for controlling carrier use to help manage uplink noise. A base station detects threshold high uplink noise on a carrier, and the base station responsively configures itself to prevent the carrier from being added as a secondary carrier for carrier-aggregation service, though the base station still allows establishment of new radio-link-layer connectivity encompassing the carrier as a primary serving carrier.