Power Headroom Reporting for Multi-Panel Uplink Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a lack of solutions for power headroom reporting in terminal devices using simultaneous multi-panel uplink transmission (STxMP) technology, which can result in inadequate coverage and performance due to signal blocking by devices or environments.
Innovation Solution
A method for power headroom reporting that determines and transmits power headroom values for multiple uplink transmission configurations, allowing identification of antenna panels, enabling accurate power control in multi-panel scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna panel is used for uplink transmission, then the device complexity is reduced, but the coverage and transmission reliability deteriorate due to signal blocking by the device itself or surrounding environment
Solution Approach 1:
The terminal device divides its antenna system into multiple independent antenna panels, each capable of performing uplink transmission separately. This segmentation allows the device to overcome signal blocking by using different spatial paths, thereby improving transmission reliability without requiring a single complex antenna system
Solution Approach 2:
The patent introduces spatial diversity by utilizing multiple antenna panels positioned at different locations and orientations. This adds a spatial dimension to the transmission system, allowing signals to propagate through different physical paths and overcoming blockages that would affect a single antenna panel
2Reliability
If multiple antenna panels are used for simultaneous uplink transmission, then the transmission reliability and coverage are improved, but the device complexity increases
Solution Approach 1:
The terminal device divides its antenna system into multiple independent antenna panels, each capable of performing uplink transmission separately. This segmentation allows the device to overcome signal blocking by using different spatial paths, thereby improving transmission reliability without requiring a single complex antenna system
Solution Approach 2:
Each antenna panel is designed to be universally capable of performing the same uplink transmission functions. This multi-functionality allows any panel to independently handle transmission tasks, simplifying the control architecture while maintaining reliability through redundancy
3Device complexity
If power headroom reporting is not implemented in multi-panel scenarios, then the device complexity is reduced, but the power control precision deteriorates
Solution Approach 1:
The power headroom reporting mechanism is segmented to provide separate PHR values for each antenna panel. This allows the network device to accurately determine the power status of each panel independently, enabling precise power control for multi-panel transmissions
Solution Approach 2:
The patent implements a feedback mechanism where the terminal device reports power headroom information for each antenna panel to the network device. This feedback enables the network to make informed decisions about power allocation and transmission parameters, achieving precise power control in multi-panel scenarios
Data Source
Figure 1~3
Figure 4~6
AI summary
The present application provides a power headroom reporting method, a communication apparatus, a terminal and a network device. The method includes: transmitting a power headroom (PH) value of an uplink transmission corresponding to target configuration information. The target configuration information is configuration information, among multiple pieces of configuration information corresponding to uplink transmission(s), for which a power headroom report (PHR) is triggered. The solution provided by the present application enables power headroom reporting in a multi-panel transmission scenario.