Power Headroom Report Triggering State Management in Multi-Num
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current communication systems face challenges in efficiently reporting power headroom and buffer status in multi-numerology scenarios, leading to inaccurate scheduling and resource allocation due to the complexity of managing different numerologies and beams.
Innovation Solution
A method for a terminal device to manage power headroom report (PHR) and buffer status report (BSR) triggering states by receiving indications from a network device, keeping these states active for specific time periods, and canceling them appropriately, allowing for accurate reporting of power headroom information and buffer status in multi-numerology and multi-beam environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal device immediately cancels the PHR triggering state after receiving the first indication, then the response time is reduced, but the scheduling accuracy deteriorates due to incomplete power headroom information reporting
Solution Approach 1:
The terminal device performs preliminary actions by keeping the PHR triggering state active during the first time period (which includes the time domain end of the first uplink transmission resource and/or the time point of receiving acknowledgment). This ensures that power headroom information is fully reported before cancellation, preventing scheduling inaccuracies while still enabling timely response.
2Measurement precision
If the terminal device keeps the PHR triggering state active for a long time, then the reporting accuracy is improved, but the time consumption increases
Solution Approach 1:
The patent applies dynamics by defining the first time period as a dynamic duration that adapts to the specific transmission scenario. The time period is determined based on the time domain end of the first uplink transmission resource and/or the time point of receiving acknowledgment, making it flexible rather than fixed. This allows the system to extend the triggering state only as long as necessary for accurate reporting, avoiding unnecessary time consumption.
3Ease of manufacture
If the terminal device uses a fixed time period for PHR triggering state, then the implementation is simplified, but the adaptability to different transmission scenarios deteriorates
Solution Approach 1:
The patent transitions from a fixed time period to a dynamic time period that adapts to different transmission scenarios. The first time period is determined based on the time domain end of the first uplink transmission resource and/or the time point of receiving acknowledgment, allowing the system to automatically adjust to various numerologies and transmission conditions without complex configuration.
4Productivity
If the terminal device cancels the PHR triggering state immediately after transmission, then the system efficiency is improved, but the reliability of power headroom reporting deteriorates
Solution Approach 1:
The terminal device performs preliminary action by maintaining the PHR triggering state through the first time period, which ensures that power headroom information is fully reported before cancellation. This preliminary maintenance of the triggering state guarantees reporting reliability while still enabling efficient system operation.
Solution Approach 2:
The patent incorporates feedback mechanisms where the terminal device monitors whether the first uplink transmission resource is successfully transmitted and whether acknowledgment is received. Based on this feedback, the terminal device determines when to cancel the PHR triggering state, ensuring reliable reporting while maintaining system efficiency.
Data Source
Figure 1a
Figure 1b
Figure 2a
AI summary
Embodiments of the present invention provide an information transmission method, including: when a terminal device is in a power headroom report (PHR) triggering state, receiving, by the terminal device, a first indication from a network device, where the first indication is used to indicate a first uplink transmission resource of the terminal device, and the uplink transmission resource is used by the terminal device to perform uplink transmission with the network device; and keeping, by the terminal device, the power headroom report triggering state in a first time period, and canceling the power headroom report triggering state when the first time period expires, where the first time period is a second time period starting from a receiving time point of the first indication to a time domain end of the first uplink transmission resource indicated by the first indication. In this way, reliability of a PHR can be improved, so that communication reliability can be improved.