Single Power Headroom Report for Simultaneous Uplink Transmissions
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing power headroom reports for simultaneous uplink transmissions, particularly when two or more transmissions overlap in time on the same cell or component carrier, as they are not configured to handle such scenarios effectively, leading to suboptimal resource allocation and potential data rate limitations.
Innovation Solution
An apparatus and method that identify simultaneous uplink transmissions overlapping in time, generate a single power headroom report using one of the transmissions, and transmit it to a network node, allowing for improved power management and resource allocation by determining which transmission to use for the report based on specific indices or rules, such as CORESETPoolIndex or TCI states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate power headroom reports are generated for each simultaneous uplink transmission, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple power headroom reports into a single combined PHR that covers all simultaneous uplink transmissions. Instead of generating separate PHRs for each transmission, the system creates one unified report that includes power headroom information for all overlapping transmissions, thereby reducing device complexity while maintaining measurement precision through comprehensive reporting.
Solution Approach 2:
The single power headroom report serves multiple functions by simultaneously reporting power headroom information for all simultaneous uplink transmissions. This universal PHR structure allows the network to understand power availability across multiple transmissions without requiring separate reports, simplifying the terminal device operations while providing complete measurement data.
2Loss of information
If multiple separate PHRs are transmitted for simultaneous transmissions, then information completeness is improved, but loss of time increases
Solution Approach 1:
The patent combines multiple power headroom reports into a single PHR structure that includes all necessary information for simultaneous transmissions. This merged report transmits power headroom information for all overlapping transmissions in one message, reducing transmission time while maintaining complete information through comprehensive data inclusion in the unified report.
3Measurement precision
If two-PHR mode is configured for simultaneous transmissions, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The single power headroom report serves as a universal structure that can handle both single transmission and multiple simultaneous transmission scenarios. By designing the PHR to be multi-functional, the system achieves measurement precision for simultaneous transmissions without requiring separate two-PHR mode configuration, thereby reducing device complexity while maintaining measurement accuracy.
Data Source
AI summary
Disclosed is a method comprising identifying or detecting, by a terminal device, at least two simultaneous uplink transmissions from the terminal device, wherein the at least two simultaneous uplink transmissions are at least partially overlapping in time on a same cell or component carrier; generating, by the terminal device, a single power headroom report (PHR) for the at least two simultaneous uplink transmissions using one uplink transmission of the at least two simultaneous uplink transmissions; and transmitting, by the terminal device and to a network node, the single PHR.