Base Station Band Switching for High-Power Terminal Uplink

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Solution Overview

Problem

Terminals configured with high power transmission capabilities often connect to cells that are not applicable for high power transmission, leading to underutilization of their capabilities.

Innovation Solution

A method to determine if a terminal is configured with high power transmission class but not operating in an applicable band, and if so, to switch it to a high power transmission applicable band based on channel quality evaluation and access priority, using a base station to send switching control instructions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal selects a cell with the best connection signal strength during cell selecting, then the connection quality is improved, but the high power transmission capability cannot be fully utilized when the selected band is not applicable for high power transmission

Engineering Contradiction:
Improveconnection qualityVSAvoidhigh power transmission capability utilization
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The base station performs preliminary assessment of terminal capabilities and current band applicability before the terminal makes cell selection decisions. The base station evaluates whether the terminal supports high power transmission and whether the current band is applicable, then provides guidance information to the terminal in advance, allowing the terminal to adjust its cell selection strategy proactively rather than reactively

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The base station receives capability information from the terminal regarding high power transmission support, evaluates the current band applicability, and provides feedback guidance information to the terminal. This feedback loop enables the terminal to understand whether it should prioritize connection quality or high power transmission capability utilization when selecting cells

Inventive Principle:
Principle #23Feedback

2Stability of the object's composition

If the terminal operates in a band that provides good signal strength, then the connection stability is improved, but the transmission power cannot be increased when the band is not applicable for high power transmission

Engineering Contradiction:
Improveconnection stabilityVSAvoidtransmission power
Core Design Contradiction:
Stability of the object's compositionVSPower

Solution Approach 1:

The system dynamically adjusts the terminal's operating parameters based on real-time conditions. The base station evaluates both the stability benefits of the current band and the power transmission opportunities, then provides dynamic guidance information that allows the terminal to adapt its transmission strategy according to whether the current band supports high power transmission

Inventive Principle:
Principle #15Dynamics

3Reliability

If the terminal uses high power transmission in all bands, then the uplink performance is improved, but the power consumption increases and battery life decreases

Engineering Contradiction:
Improveuplink performanceVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system applies high power transmission selectively rather than uniformly across all bands. The base station evaluates the local characteristics of each band to determine whether it supports high power transmission, and provides targeted guidance information only for bands where high power transmission is both supported and beneficial, allowing the terminal to maintain low power consumption in bands where it is unnecessary

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP3989639B1Band switching control method and base station
Publication Date: 2025.12.10 ZTE CORP
  • EP3989639B1 patent drawingFigure 1
  • EP3989639B1 patent drawingFigure 2
  • EP3989639B1 patent drawingFigure 3

AI summary

The present invention provides a band switching control method, including: in response to a target terminal being configured with a high power transmission class but not operating in a high power transmission applicable band corresponding to the target terminal, determining whether an accessible band of the target terminal includes at least one high power transmission applicable band; and in response to determining that the accessible band of the target terminal includes the at least one high power transmission applicable band, selecting one of the at least one high power transmission applicable band that is accessible as a target band, and sending a first switching control instruction to the target terminal, wherein the first switching control instruction is configured to control the target terminal to switch to the target band for operation. The present invention also provides a base station and a readable storage medium.