Uplink Power Control Parameters for NR Service Types
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Solution Overview
Problem
The existing power control methods in LTE systems are inadequate for the new radio (NR) system, as they fail to adapt to different service types, subcarrier spacings, and waveforms, leading to inconsistent SINR and poor reliability in scenarios like ultra-reliable and low-latency communications (URLLC).
Innovation Solution
A power control method that determines and sends different uplink channel power control parameters for various types of data, including those with distinct service types, subcarrier spacings, and waveforms, using parameters such as cell reference open-loop power transmission, path loss compensation, and modulation and coding scheme-based adjustments, to ensure optimal transmit power for each type of data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single uplink channel power control parameter is used for all data transmissions, then the system complexity is low and the control is simple, but the SINR performance is inconsistent and reliability is poor for different service types
Solution Approach 1:
The patent segments the power control parameters by associating different uplink channel power control parameters with different service types through service type indicators. This allows separate power control optimization for different service types (e.g., eMBB, URLLC, mMTC) while maintaining manageable complexity through structured parameter association
Solution Approach 2:
The patent applies local quality by configuring power control parameters specifically tailored to each service type's requirements. Different service types receive customized power control parameters optimized for their specific performance needs, ensuring each service type achieves its target SINR performance with appropriate power allocation
2Reliability
If different uplink channel power control parameters are configured for different service types, then the SINR performance and reliability are improved, but the signaling overhead and system complexity increase
Solution Approach 1:
The patent uses a universal service type indicator mechanism that can identify and differentiate multiple service types. This indicator serves multiple functions: identifying service type, selecting appropriate power control parameters, and enabling efficient signaling by encoding service type information in a standardized manner that reduces overall signaling overhead
3Manufacturing precision
If power control parameters are optimized for specific service types, then the performance requirements are met, but the adaptability to new service types is reduced
Solution Approach 1:
The patent implements dynamic power control parameter configuration where parameters can be adapted and reconfigured for different service types as they emerge. The service type indicator mechanism allows the system to dynamically associate new service types with appropriate power control parameters, enabling both precise control for existing services and flexibility for future service type additions
Data Source
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AI summary
Embodiments of this application disclose a power control method and an apparatus, relate to the field of communications technologies, and may be applied to an NR system. The method may include: determining, by a network device, an uplink channel power control parameter of user equipment UE, where different uplink channel power control parameters of the UE are used for transmitting different types of data; and sending, by the network device, information indicating the determined uplink channel power control parameter.