Terminal PHR Control for Multi-TRP PUSCH Repetition
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Solution Overview
Problem
Current standards do not provide a method for controlling Power Headroom Reports (PHR) in Multi-TRP Physical Uplink Shared Channel (PUSCH) repetition in next-generation radio communication systems, leading to potential deterioration in communication throughput and quality.
Innovation Solution
A terminal is equipped with a control section that determines and transmits a Power Headroom Report (PHR) MAC control element, even when there is temporal overlap with Physical Uplink Shared Channel repetition transmission using multiple sounding reference signal resource indicators in another serving cell, ensuring appropriate PHR reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PHR transmission is performed in a serving cell while PUSCH repetition transmission using multiple SRIs is performed in another serving cell, then PHR reporting can be conducted, but transmission conflicts occur when these transmissions temporally overlap
Solution Approach 1:
The patent applies dynamics by making the PHR transmission behavior adaptable based on timing relationships. The control section dynamically determines whether to transmit PHR based on whether the PHR transmission time overlaps with PUSCH repetition transmission times, allowing the system to flexibly adjust transmission behavior according to real-time conditions rather than following a fixed rule
Solution Approach 2:
The control section performs preliminary determination of transmission timing relationships before actual transmission occurs. By checking in advance whether PHR transmission would overlap with PUSCH repetition transmissions and calculating timing relationships, the system can proactively avoid conflicts rather than reacting to them after they occur
2Productivity
If appropriate PHR triggering and transmission is not performed in MTRP PUSCH repetition scenarios, then system complexity remains low, but communication throughput and quality deteriorate
Solution Approach 1:
The patent implements feedback mechanisms where the terminal reports PHR information to the network based on power headroom calculations in MTRP PUSCH repetition scenarios. The network uses this feedback to adjust uplink transmission parameters, creating a closed-loop control system that optimizes communication throughput through informed decision-making
Solution Approach 2:
The patent changes the parameter of PHR transmission behavior specifically for MTRP PUSCH repetition scenarios. By introducing new transmission rules and timing determination methods tailored to multi-TRP operations, the system optimizes power headroom reporting to match the specific requirements of multi-TRP PUSCH repetition, thereby improving throughput without unnecessarily complicating other transmission modes
Data Source
AI summary
A terminal according to one aspect of the present disclosure includes a control section that, when transmission of a Power Headroom Report (PHR) Medium Access Control (MAC) control element in a certain serving cell and Physical Uplink Shared Channel (PUSCH) repetition transmission using a plurality of sounding reference signal resource indicators (SRIs) in another serving cell temporally overlap, determines one or two PHRs regarding the other serving cell to be included in the PHR MAC control element, and a transmitting section that transmits the PHR MAC control element. According to one aspect of the present disclosure, the PHR report when MTRP PUSCH repetition is used can be appropriately performed.