Uplink Control Channel Power Control Across Multiple Carriers
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing power control for uplink control channels on multiple component carriers, particularly in scenarios where transmissions occur on both primary and secondary component carriers, which can lead to inefficiencies in latency and throughput performance.
Innovation Solution
The proposed solution is to implement power control techniques for uplink control channels on multiple component carriers, which include determining the power control techniques for uplink control channels on multiple component carriers, including closed-loop power control and open-loop power control configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power control is implemented for uplink control channels on multiple component carriers, then power control efficiency is improved and throughput is improved, but device complexity increases
Solution Approach 1:
The patent segments the uplink control channel transmissions across multiple component carriers, with each carrier having independent power control parameters and TPC commands. This allows parallel power control management for different carriers, improving overall throughput while managing complexity through modular segmentation of the power control function.
Solution Approach 2:
The patent implements dynamic power control where transmit power for each component carrier is adjusted in real-time based on received TPC commands and channel conditions. This dynamic adjustment optimizes power efficiency and throughput by adapting to changing network conditions, while the automated nature of the adjustments reduces the operational burden on the device.
2Loss of time
If power control is implemented for uplink control channels on multiple component carriers, then latency is reduced, but device complexity increases
Solution Approach 1:
The patent establishes preliminary power control configurations and TPC command structures for multiple component carriers before transmission begins. This pre-configuration enables faster power adjustments and reduces processing latency during actual transmissions, as the device doesn't need to calculate power parameters from scratch for each carrier.
Solution Approach 2:
The device automatically processes TPC commands and adjusts transmit power for each component carrier without requiring manual intervention or complex coordination. This self-service approach to power control reduces operational complexity while enabling rapid power adjustments that minimize transmission latency.
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described for uplink carrier aggregation in which uplink control channel communications may be transmitted on a primary component carrier (CC) and one or more secondary CCs. Uplink transmission power control for the control channel communications may be determined based on a power control configuration provided by a base station. The primary CC and secondary CC(s) may use a same set of power control parameters based on being within a same frequency band, and may use different power control parameters when one or more of the CCs are in a different frequency bands. Power control commands to increase or decrease transmit power may be accumulated on a per-CC basis, or across multiple CCs, based at least in part on the power control configuration.