Multi-Beam Uplink Power Control Parameter Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in implementing effective power control and power headroom reporting, particularly in multi-beam scenarios, where determining uplink data channel, control channel, or reference signal power is complex due to the need for precise path loss adjustments and dynamic scheduling in New Radio (NR) systems.
Innovation Solution
A communication method that involves receiving indication information for determining uplink data channel, control channel, or reference signal power, using parameters such as nominal power, path loss adjustment factors, and closed-loop power control values, and sending power headroom reports, with the ability to adapt power settings based on dynamic scheduling and beam configuration information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic scheduling is used for uplink transmission in multi-beam systems, then communication flexibility and adaptability are improved, but power control complexity increases due to the need for precise path loss adjustments and beam-specific parameters
Solution Approach 1:
The patent segments power control parameters by associating them with specific beams (first beam and second beam). Different power control parameter sets are maintained for different beams, allowing independent optimization of power control for each beam while managing complexity through structured organization of beam-specific parameters including path loss adjustments and closed-loop power control values
Solution Approach 2:
The patent implements dynamic power control parameter indication where the network device dynamically indicates which power control parameter set to use for each uplink transmission. This allows the system to adapt power control parameters in real-time based on current beam conditions, transmission requirements, and channel state, thereby improving flexibility while maintaining manageable complexity through dynamic adaptation
2Measurement precision
If beam-specific power control parameters are used for each uplink channel, then power control precision is improved, but the number of parameters and signaling overhead increase
Solution Approach 1:
The patent creates a universal power control parameter structure where each beam has an associated power control parameter set that can be applied to multiple uplink channels (data channel, control channel, reference signal). This multi-functional parameter set reduces the total number of parameters needed compared to having separate parameters for each channel and beam combination, while still achieving beam-specific power control precision
Solution Approach 2:
The patent pre-configures power control parameter sets for different beams before uplink transmission. The network device prepares multiple power control parameter sets corresponding to different beams in advance, and simply indicates which pre-configured set to use during dynamic scheduling. This preliminary configuration reduces real-time signaling overhead while maintaining precise beam-specific power control
3Reliability
If power headroom reporting is implemented in multi-beam scenarios, then uplink power management accuracy is improved, but reporting complexity and processing overhead increase
Solution Approach 1:
The patent implements power headroom reporting specific to each beam by associating power headroom calculations with beam-specific power control parameter sets. The terminal device calculates and reports power headroom separately for different beams based on their respective parameter sets, allowing the network to accurately assess uplink power status for each beam while managing reporting complexity through structured beam-specific reporting
Data Source
AI summary
This application provides a communication method, a communications apparatus, and a communications system. The method includes: receiving first indication information, where the first indication information indicates at least two first parameters, and the at least two first parameters are used for determining at least one of an uplink data channel power, an uplink control channel power, or an uplink reference signal power during dynamic scheduling; and determining a second parameter obtained when a first time element is not used to transmit at least one of an uplink data channel, an uplink control channel, or an uplink reference signal, where the second parameter is at least one of a nominal power, a path loss adjustment factor, a path loss, or a closed-loop power control adjustment value. The method is applicable to power control and/or power headroom reporting in a multi-beam system.