Wireless Power Control via Base Station Feedback
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Solution Overview
Problem
Conventional power adjustment methods for wireless communication apparatuses fail to effectively manage signal interference between devices within the same network, leading to inefficient communication and coverage issues.
Innovation Solution
A power control method and system that involves a base station and mobile apparatuses to transmit and adjust communication power by determining power adjustment references and generating request messages to optimize power levels between devices, allowing for efficient power adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wireless communication apparatuses transmit with higher message transmission power, then signal transmission energy is improved, but signal interference with other apparatuses increases excessively
Solution Approach 1:
The patent implements a feedback mechanism where the base station receives signal strength information from mobile apparatuses and sends power adjustment instructions back to them. This closed-loop feedback system allows dynamic adjustment of transmission power based on actual network conditions, preventing excessive interference while maintaining adequate signal strength.
Solution Approach 2:
The patent changes the transmission power parameter dynamically based on measured signal conditions. The base station measures signal strengths from different mobile apparatuses and adjusts their transmission power parameters accordingly, transforming the static power level into a dynamically optimized parameter that adapts to network conditions.
2Object-generated harmful factors
If wireless communication apparatuses transmit with lower message transmission power, then signal interference with other apparatuses is reduced, but signal coverage becomes smaller and transmission efficiency degrades
Solution Approach 1:
The patent dynamically adjusts the transmission power parameter based on measured signal conditions and calculated path losses. This parameter optimization ensures that each mobile apparatus transmits at the minimum necessary power to maintain reliable communication, improving overall network efficiency while minimizing interference.
Solution Approach 2:
The patent applies differentiated power adjustment to individual mobile apparatuses based on their specific conditions. Rather than uniformly reducing power for all apparatuses, the system applies partial power reduction only where necessary to maintain coverage, allowing apparatuses with good channel conditions to maintain higher power for better efficiency.
3Power
If conventional power adjustment methods are used, then message transmission power between wireless communication apparatuses and base station is adjusted, but message transmission power between wireless communication apparatuses cannot be adjusted effectively
Solution Approach 1:
The patent extends the power adjustment mechanism to serve multiple functions: it controls both the uplink power (apparatus to base station) and the direct communication power (apparatus to apparatus). This multi-functional approach allows a single power control system to optimize multiple transmission scenarios simultaneously.
Solution Approach 2:
The base station acts as an intermediary that coordinates power adjustment for direct communications between mobile apparatuses. Even though the apparatuses communicate directly, the base station mediates the power control process by receiving measurements and sending adjustment instructions, enabling effective power management for direct links.
Data Source
AI summary
A mobile apparatus, a base station, a direct communication system and a power control method thereof are provided. The direct communication system includes the mobile apparatus and the base station. The base station transmits a power measurement request message to the mobile apparatus. The mobile apparatus determines a power adjustment reference between the mobile apparatus and another mobile apparatus according to the power measurement request message. One of the mobile apparatus and the base station generates a power adjustment request message according to the power adjustment reference. The mobile apparatus adjusts a communication power with the another mobile apparatus according to the power adjustment request message.