Pathloss Reference Signal Updates for Uplink Power Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing pathloss reference signals, particularly in heterogeneous networks with varying cell sizes and traffic conditions, leading to suboptimal performance and resource allocation.
Innovation Solution
Implementing dynamic power control mechanisms that adjust transmission power based on network conditions, device capabilities, and traffic loads, using modules configured to optimize power settings in base stations and wireless devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pathloss reference signal resources are configured for all uplink carriers in carrier aggregation, then pathloss estimation accuracy is improved, but signaling overhead and device complexity increase
Solution Approach 1:
The patent applies local quality by configuring pathloss reference signal resources selectively for specific uplink carriers based on their individual requirements. Instead of uniformly configuring all carriers, the network configures reference signals only for carriers that need them, optimizing the balance between measurement accuracy and device complexity for each local context.
Solution Approach 2:
The patent segments the carrier aggregation configuration by separating the configuration of pathloss reference signal resources from the uplink carrier configuration. This allows independent optimization where reference signal resources are configured only for specific carriers that require pathloss estimation, rather than all carriers.
2Measurement precision
If pathloss reference signal resources are configured for all uplink carriers in carrier aggregation, then pathloss estimation accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts the pathloss reference signal configuration from the general uplink carrier configuration. By separating these configurations, the system only configures reference signal resources for carriers that actually need pathloss estimation, removing unnecessary signaling overhead while preserving measurement accuracy where needed.
3Adaptability or versatility
If bandwidth parts are dynamically configured and switched, then network adaptability to traffic conditions is improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent implements dynamics by enabling dynamic configuration and switching of bandwidth parts based on real-time traffic conditions and device capabilities. The system can adjust the active bandwidth part dynamically, allowing the network to adapt to varying traffic loads while the device manages multiple bandwidth part configurations for different scenarios.
Solution Approach 2:
The patent applies universality by designing the bandwidth part configuration mechanism to serve multiple functions: supporting different traffic types, adapting to various device capabilities, and enabling flexible resource allocation. This multi-functional approach improves network adaptability without requiring separate mechanisms for each scenario.
Data Source
AI summary
A wireless device receives configuration parameters associated with a cell. The wireless device receives an activation command indicating activation of a transmission configuration indicator (TCI) state having a downlink reference signal, the command indicating activation of the TCI state for a control resource set (coreset). The wireless device receives downlink control information (DCI) indicating uplink resources of a time slot of an active uplink bandwidth part of the cell, where a sounding reference signal resource indicator field is absent in the DCI. The wireless device transmits, via the uplink resources, an uplink signal with a transmission power determined based on the reference signal, the transmitting being in response to a parameter enabling a default pathloss reference signal determination and the uplink resources occurring after a predetermined number of measurement samples of the downlink reference signal is obtained.