Wireless Device Pathloss Offset Updates for Asymmetric Uplink Power
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Solution Overview
Problem
Wireless devices face challenges in efficiently communicating with base stations due to asymmetric uplink and downlink channels, leading to suboptimal transmission power settings that affect transmission success and efficiency.
Innovation Solution
The wireless device adjusts transmission power based on pathloss offset values using incremental adjustments from a preconfigured table, allowing for improved communication efficiency and increased likelihood of successful transmission/reception with multiple computing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wireless device uses fixed transmission power settings based on initial configuration parameters, then the device can maintain simple power control, but communication efficiency deteriorates due to asymmetric uplink and downlink channels
Solution Approach 1:
The patent implements dynamic pathloss offset updates by receiving updated configuration parameters from the base station and applying incremental adjustments to the pathloss offset value. This transforms the static power control into a dynamic system that adapts to changing channel conditions, resolving the contradiction between communication efficiency and power control simplicity
Solution Approach 2:
The patent changes the pathloss offset parameter incrementally based on updated configuration parameters received from the base station. By modifying this key parameter dynamically, the system optimizes transmission power for asymmetric channels while maintaining a relatively simple update mechanism through preconfigured tables
2Reliability
If the wireless device uses incremental pathloss offset updates from a preconfigured table, then transmission power optimization improves, but the complexity of power adjustment increases
Solution Approach 1:
The patent uses a preconfigured table that contains pathloss offset values and incremental adjustments prepared in advance. This preliminary preparation allows the device to quickly lookup and apply appropriate adjustments without complex real-time calculations, improving transmission reliability while limiting the increase in operational complexity
Solution Approach 2:
The patent applies incremental changes to the pathloss offset parameter based on values from the preconfigured table. This approach improves transmission success by fine-tuning the power parameter while keeping the adjustment mechanism relatively simple through the use of pre-determined incremental values
3Adaptability or versatility
If the wireless device configures transmission power for both uplink and downlink with multiple computing devices, then communication versatility improves, but the difficulty of power management increases
Solution Approach 1:
The patent applies different pathloss offset values and incremental adjustments for different computing devices (first computing device for downlink, second computing device for uplink). This localized optimization for each device's specific communication direction improves versatility while managing complexity through device-specific parameter sets
Solution Approach 2:
The patent implements a universal power control mechanism that handles both uplink and downlink communications with multiple computing devices through a common framework of pathloss offset updates. The same incremental update mechanism serves multiple communication scenarios, improving versatility without proportionally increasing operational complexity
Data Source
AI summary
A wireless device may be configured to communicate with multiple computing devices, such as transmission/reception points. A control message, comprising a pathloss offset field, from a first computing device may cause the wireless device to determine a transmission power for uplink-only communication with a second computing device. The pathloss offset field may indicate an incremental fixed-size adjustment according to a preconfigured table. Based on the pathloss offset field, the wireless device may determine a pathloss offset for determination of the transmission power for the uplink-only communication.