Uplink Power Control for Wireless Services
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing transmission power for uplink physical channels, particularly in accommodating diverse service types and requirements, which affects reliability, latency, and energy efficiency.
Innovation Solution
A method where user equipment (UE) adjusts transmission power for uplink physical channels based on service type-specific parameters received through higher layer signaling, using different power-related parameters for physical downlink control channels to optimize power allocation for channels requiring higher reliability, lower latency, and other service-specific needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single transmission power parameter is used for all uplink physical channels, then device complexity is reduced, but service adaptability deteriorates as different service types (eMBB, URLLC, mMTC) cannot receive optimized power control
Solution Approach 1:
The patent segments the transmission power control mechanism by introducing separate power control parameters (alpha values, offset values) for different uplink physical channels (PUCCH, PUSCH, SRS) and different service types (eMBB, URLLC, mMTC). This allows each channel and service combination to have customized power control settings, resolving the contradiction between service adaptability and device complexity by enabling fine-grained control only where needed.
Solution Approach 2:
The patent applies local quality by configuring different power control parameters for different service types and channels based on their specific requirements. For example, URLLC services receive higher power control weights and offset values to ensure reliability, while mMTC services use lower values for energy efficiency. This localized optimization resolves the contradiction by tailoring power control characteristics to specific service needs rather than applying a uniform approach.
2Reliability
If transmission power is increased for high reliability services, then service reliability is improved, but energy efficiency deteriorates due to higher power consumption
Solution Approach 1:
The patent changes power control parameters (alpha values, offset values) dynamically based on service type requirements. For URLLC services requiring high reliability, the system configures higher alpha values (0.8-1.0) and positive offset values to increase transmission power and ensure reliable delivery. For mMTC services where energy efficiency is paramount, the system uses lower alpha values (0.2-0.5) and negative or zero offset values to minimize power consumption. This parameter differentiation resolves the contradiction by optimizing the reliability-power tradeoff for each service type.
3Productivity
If different power control parameters are configured for different service types, then service-specific performance is optimized, but signaling overhead increases due to additional configuration messages
Solution Approach 1:
The patent implements dynamic power control parameter configuration where the base station adaptively adjusts and signals different power control parameters (alpha, offset) for different service types and channels based on current network conditions and service requirements. This dynamic approach enables the system to optimize service performance while managing signaling overhead by only transmitting parameter updates when changes are needed, rather than continuously signaling all parameters.
4Use of energy by moving object
If transmission power is dynamically adjusted based on service requirements, then energy efficiency is improved, but control complexity increases due to dynamic parameter management
Solution Approach 1:
The patent enables self-service power control where the UE autonomously calculates its transmission power for different uplink channels by applying service-specific power control parameters (alpha values, path loss compensation, offset values) to the received downlink path loss measurements. The UE independently determines the appropriate power level for PUCCH, PUSCH, and SRS transmissions based on the configured parameters and current channel conditions, reducing the need for continuous network control and simplifying overall system complexity while maintaining energy efficiency.
Data Source
AI summary
A method for transmitting an uplink physical channel in a wireless communication system and a device supporting the same are disclosed. More specifically, the method performed by a user equipment (UE) includes receiving, from a base station, transmission power related information via higher layer signaling, receiving a physical downlink control channel from the base station, and transmitting the uplink physical channel to the base station based on the physical downlink control channel, wherein the uplink physical channel includes a first uplink physical channel or a second uplink physical channel, wherein transmission powers for the first uplink physical channel and the second uplink physical channel are respectively calculated by different power related parameters determined based on the transmission power related information and the physical downlink control channel.