Wireless Device Timing Advance Group Power Adjustment
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Solution Overview
Problem
Current LTE technologies face challenges in managing timing advance groups, leading to excessive timing differences between multiple timing advance groups, which can result in network performance deterioration and unwanted interference due to the alignment of uplink transmission timing across different TAGs.
Innovation Solution
The implementation of multiple timing advance groups with dynamic timing alignment mechanisms, allowing for the configuration of different timing references and power management strategies to minimize timing differences and optimize uplink transmission alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple timing advance groups are configured for uplink transmission, then coverage and capacity are improved, but timing differences between TAGs cause network performance deterioration and unwanted interference
Solution Approach 1:
The patent implements dynamic timing alignment mechanisms where the wireless device continuously monitors timing differences between multiple TAGs and dynamically adjusts uplink transmission timing to maintain alignment within acceptable thresholds. This dynamic adjustment resolves the contradiction by enabling multiple TAGs to coexist without causing harmful interference, thus maintaining network performance while preserving the adaptability benefits of multiple TAG configurations
Solution Approach 2:
The patent employs feedback mechanisms where the wireless device measures timing differences between TAGs and provides this information to the network, which then adjusts timing advance values accordingly. This closed-loop feedback system ensures that timing alignment is maintained despite the presence of multiple TAGs, preventing network performance deterioration while allowing versatile TAG configuration
2Reliability
If uplink transmission timing is aligned across different TAGs, then network performance is improved, but transmission power requirements increase
Solution Approach 1:
The patent applies local quality by configuring different timing advance values and power management strategies for different TAGs based on their specific requirements. Instead of uniform timing alignment across all TAGs, the system optimizes timing and power settings locally for each TAG, reducing overall power consumption while maintaining network performance through targeted alignment where necessary
Solution Approach 2:
The patent changes timing and power parameters dynamically based on TAG-specific conditions. By adjusting timing advance values and transmission power levels individually for each TAG rather than applying uniform settings, the system achieves network performance improvement without excessive power consumption, resolving the contradiction between reliability and power requirements
3Object-generated harmful factors
If timing differences between TAGs are reduced, then interference is minimized, but device complexity increases due to dynamic timing adjustment mechanisms
Solution Approach 1:
The patent implements self-service mechanisms where the wireless device autonomously monitors its own timing alignment across TAGs and performs self-adjustment of transmission timing without requiring complex network-controlled coordination. This self-service approach minimizes interference between TAGs while keeping device complexity manageable by eliminating the need for elaborate external control mechanisms
Data Source
AI summary
Wireless communications are described. A wireless device may determine a first transmission power for a first signal and a second transmission power for a second signal. The wireless device may reduce signal transmission power of one or more of the first signal or the second signal, based on a calculated power value exceeding an allowable transmission power. The wireless device may reduce the signal transmission power during an overlap period or a non-overlap period, based on a duration of an overlap of the first signal with the second signal.