Transmission Overlap Skipping for Power Control in Carrier Aggregation
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Solution Overview
Problem
In intraband carrier aggregation and intraband EN-DC scenarios, the misalignment of channels leads to frequent power changes due to the need for transient periods in power adjustment, which existing solutions fail to adequately address.
Innovation Solution
The method involves determining a to-be-processed channel with overlapping transmission parts and skipping the sending of these parts to avoid frequent power changes, using criteria such as subcarrier spacing, channel priority, and the presence of demodulation reference signals to optimize power control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power adjustment is performed for misaligned overlapping transmission, then transmission power can be optimized for each channel, but frequent power changes occur due to transient period requirements
Solution Approach 1:
The patent extracts and removes the overlapping transmission part that causes power adjustment conflicts. By identifying the time domain overlap between channels and eliminating this overlapping portion, the system avoids the need for frequent power adjustments and their associated transient periods, thus resolving the contradiction between power optimization and time loss.
Solution Approach 2:
The patent segments the channel transmission into non-overlapping time domain portions. By dividing the transmission timeline and assigning non-overlapping segments to different channels, the system eliminates power adjustment conflicts while maintaining efficient resource utilization, addressing both power optimization and transient period concerns.
2Ease of operation
If channels are transmitted with different start or end time points, then power control can be optimized, but misaligned overlapping transmission cannot be resolved with a single power amplifier
Solution Approach 1:
The patent removes the problematic overlapping transmission part that creates incompatibility with single power amplifier operation. By extracting and eliminating the time domain overlap, the system enables simple power amplifier operation while maintaining optimized power control for non-overlapping channel transmissions.
3Loss of information
If current solution reports terminal device capability for misaligned overlapping transmission, then device capability is documented, but the actual problem of resolving misaligned overlapping transmission remains unsolved
Solution Approach 1:
Instead of merely reporting capability information, the patent extracts and eliminates the actual problematic overlapping transmission part. This practical solution directly resolves the misaligned overlapping transmission issue and improves transmission efficiency, going beyond simple capability documentation.
Data Source
AI summary
This application provides a transmission method and apparatus. The transmission method in this application includes: determining a to-be-processed channel, where the to-be-processed channel is a first channel or a second channel, the first channel is transmitted on a first carrier, the second channel is transmitted on a second carrier, the first channel and the second channel have different transmission start time points or transmission end time points, and the first channel and the second channel each have an overlapping transmission part in time domain; and skipping sending the overlapping transmission part of the to-be-processed channel.