Base Station Transmission Power Adjustment for Private Network Interference
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Solution Overview
Problem
The deployment of private 5G networks faces interference issues due to overlapping coverages, which existing technologies struggle to resolve effectively, hindering the achievement of optimal quality of service (QoS) and independent operation.
Innovation Solution
A base station adjusts transmission power in a step-wise manner, either increasing or decreasing it based on registration success or timer conditions, to minimize interference and ensure optimal QoS, allowing private networks to operate independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If private networks use fixed transmission power, then network deployment is simple, but interference between overlapping coverages cannot be suppressed
Solution Approach 1:
The patent implements dynamic transmission power adjustment by introducing a power modification value that is added to initial transmission power based on registration outcomes. The base station continuously adapts transmission power by incrementing or decrementing the power modification value according to whether terminals successfully register, transforming the static power system into a dynamic one that automatically suppresses interference while maintaining deployment simplicity.
Solution Approach 2:
The patent establishes a feedback mechanism where the base station monitors terminal registration success and uses this information to adjust transmission power. When registration fails, the power modification value increases to expand coverage; when registration succeeds, the value decreases to reduce interference. This closed-loop feedback system automatically balances coverage and interference suppression without complex manual configuration.
2Area of stationary object
If transmission power is increased to expand coverage, then more terminals can register, but interference with other private networks increases
Solution Approach 1:
The system dynamically adjusts transmission power based on actual registration needs rather than using fixed high power. The power modification value starts at zero and only increases when registration failures occur, ensuring coverage expands only when necessary. This dynamic approach prevents unnecessary interference while maintaining sufficient coverage for registered terminals.
Solution Approach 2:
The patent changes the transmission power parameter adaptively by modifying it with a power modification value derived from registration outcomes. Instead of using a fixed high power level that causes interference, the system adjusts the power parameter incrementally based on actual network conditions, achieving coverage expansion only when and where needed.
3Object-affected harmful factors
If transmission power is decreased to reduce interference, then interference is suppressed, but coverage area shrinks and registration fails
Solution Approach 1:
The system maintains reliability by dynamically adjusting power only when registration failures occur. The power modification value increases to restore coverage when needed, ensuring that reliability is maintained at the minimum acceptable level. This dynamic adjustment prevents permanent power reduction that would compromise registration success while avoiding sustained high power that causes interference.
Solution Approach 2:
The transmission power parameter is changed adaptively based on registration performance. When registration success rate drops, the power modification value increases to restore adequate coverage and reliability. This parameter adjustment ensures reliability is maintained dynamically without permanently reducing power to levels that would cause registration failures.
4Object-affected harmful factors
If step-wise power adjustment is implemented, then interference is suppressed and QoS improves, but system complexity increases
Solution Approach 1:
The patent segments the power control mechanism into simple, discrete steps based on registration outcomes. Rather than implementing complex continuous power optimization, the system uses a power modification value that adjusts in discrete increments tied to clear registration success/failure events. This segmentation simplifies the control logic while achieving effective interference suppression through step-wise adjustment.
Solution Approach 2:
The base station performs self-adjustment of transmission power based on its own observation of registration outcomes without requiring external control or complex coordination. The power modification value is automatically updated based on whether terminals successfully register, enabling the system to self-regulate interference levels while maintaining QoS, reducing the need for complex external power control mechanisms.
Data Source
AI summary
An operation method of a base station in a communication system may comprise: transmitting a synchronization signal and system information by using a predetermined transmission power; performing a registration procedure with a registration target terminal based on the synchronization signal and the system information; increasing a transmission power value of the predetermined transmission power by a preset value when the registration procedure with the registration target terminal fails; and providing a private service to the terminal when the registration procedure with the registration target terminal is successful.