UE Random Access Channel Power Adjustment Timing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
User equipment (UE) faces challenges in ensuring uplink transmission performance when sending random access channels and uplink data channels on contiguous time domain resources, as it needs to adjust transmit power between these channels, but existing methods fail to ensure sufficient time for power adjustment.
Innovation Solution
The UE determines whether to send, skip, or adjust the random access channel and uplink data channel based on the relationship between a target time domain gap and a preset value, allowing sufficient time for power adjustment by sending these channels either separately or together, or skipping them altogether.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE sends PRACH and PUSCH on contiguous time domain resources, then uplink transmission performance is improved, but the UE cannot adjust power between the two channels
Solution Approach 1:
The patent applies preliminary action by introducing a third resource (first time domain resource or second time domain resource) that is configured before the actual transmission. This pre-configured resource provides the UE with advance time to adjust transmit power from the PRACH level to the PUSCH level, enabling power adaptation without compromising the contiguous time domain resource arrangement for optimal uplink transmission performance.
2Use of energy by moving object
If the UE adjusts power between PRACH and PUSCH, then power optimization is achieved, but the transmission time is extended
Solution Approach 1:
The patent segments the time domain resources into distinct parts: a first time domain resource for PRACH transmission, a second time domain resource for PUSCH transmission, and an intermediate adjustment period. This segmentation allows the UE to transmit PRACH, then adjust power during the intermediate period, and finally transmit PUSCH, achieving power optimization while minimizing time extension through efficient resource allocation.
3Reliability
If the UE sends msgA on both PRACH and PUSCH, then transmission reliability is improved, but the complexity of power adjustment increases
Solution Approach 1:
The patent introduces an intermediary mechanism in the form of a pre-configured third resource that mediates between PRACH and PUSCH transmissions. This intermediary resource serves as a buffer that simplifies the power adjustment process by providing a dedicated time window for power transition, thereby reducing the complexity of coordinating msgA transmission across multiple channels with different power requirements.
Data Source
AI summary
Embodiments of this application disclose a data processing method and user equipment. The method includes: performing any one of the following based on a relationship between a target time domain gap and a first preset value: sending a random access channel; sending an uplink data channel; sending a random access channel and an uplink data channel; or skipping sending a random access channel and an uplink data channel, where the target time domain gap is a gap between a time domain location of a first resource and a time domain location of a second resource, the first resource is a resource for the random access channel, the second resource is a resource for the uplink data channel, and the random access channel and the uplink data channel are used to carry a random access message.