Uplink Power Prioritization Across Multiple Wireless Services
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing power control for multiple services and services across different radio access technologies, leading to suboptimal resource allocation and performance.
Innovation Solution
Implementing advanced power control mechanisms that dynamically adjust modulation and coding schemes based on transmission requirements and radio conditions, utilizing hybrid transmission mechanisms like TDMA/CDMA and OFDM/CDMA, and employing advanced modulation techniques such as QAM, BPSK, QPSK, 16-QAM, and 64-QAM to enhance radio transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional power control mechanisms are used for multiple services, then device complexity is reduced, but resource allocation efficiency deteriorates
Solution Approach 1:
The power control mechanism is segmented into service-specific power control configurations, where each service type (e.g., eMBB, URLLC, mMTC) has dedicated power control parameters and rules. This allows the system to optimize power allocation for each service independently while maintaining overall system efficiency, resolving the contradiction by dividing the complex power control problem into manageable service-specific segments.
Solution Approach 2:
The power control mechanism employs dynamic adjustment capabilities where power control parameters are adapted in real-time based on service requirements, channel conditions, and network state. This dynamic approach enables the system to achieve high resource allocation efficiency for diverse services without requiring overly complex static configurations, as the system automatically adjusts to optimal settings.
2Productivity
If advanced power control mechanisms are implemented, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The power control mechanism is designed with universal principles that can be applied across multiple service types and radio access technologies. By establishing a framework of general power control rules that can be configured for different services, the system achieves high resource allocation efficiency without proportionally increasing complexity, as the same core mechanism serves multiple functions.
Solution Approach 2:
The system optimizes resource allocation by dynamically changing power control parameters such as power control adjustments, pathloss reference signals, and target received power levels based on service requirements. This parameter-based approach allows fine-grained control over resource allocation efficiency without requiring fundamental changes to the power control architecture, thereby limiting complexity growth.
3Reliability
If service-specific power control is implemented, then performance is improved, but measurement and detection difficulty increases
Solution Approach 1:
The system introduces intermediary reference signals such as pathloss reference signals and synchronization signals that facilitate the measurement and detection of power control parameters. These intermediary signals serve as mediators between the transmitter and receiver, enabling accurate measurement of channel conditions and power levels without requiring complex direct measurements, thus improving service performance while limiting measurement difficulty.
Data Source
AI summary
A wireless device determines transmission powers of a plurality of uplink channels, based on the following power priorities, for the plurality of uplink channels, in descending order: a physical random access channel (PRACH) of a primary cell; a first uplink channel, of the plurality of uplink channels, comprising a scheduling request (SR) with a first priority; a second uplink channel, of the plurality of uplink channels, comprising a hybrid automatic request (HARQ) feedback with a second priority, wherein the second priority is lower than the first priority; and a PRACH of a secondary cell. The wireless device transmits, via at least one uplink channel of the plurality of uplink channels, one or more uplink signals using one or more corresponding transmission powers of the transmission powers.