NR Uplink Band Switching Gap Determination Across Multiple Bands
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Solution Overview
Problem
In the context of Release-18 multicarrier enhancement, terminals supporting uplink transmission switching among multiple frequency bands face inconsistent understanding between the base station and the terminal regarding the need for switching gaps, leading to inefficiencies in network deployment and scheduling.
Innovation Solution
The proposed solution involves determining whether a switching gap is required between adjacent uplink transmissions by establishing an association relationship between a reference frequency band pair and the uplink transmission chain, with the terminal or base station using this relationship to ensure consistent understanding and improve network flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uplink transmission switching is supported among multiple frequency bands (more than 2), then the adaptability and versatility of the terminal is improved, but the base station's ability to determine switching requirements deteriorates due to inconsistent understanding
Solution Approach 1:
The patent segments the frequency band information into a reference frequency band pair that is explicitly signaled to the terminal. This segmentation allows the base station to provide specific switching gap determination information for the referenced band pair, resolving the inconsistency problem while maintaining support for multiple frequency bands.
Solution Approach 2:
The patent introduces a reference frequency band pair as an intermediary element. The base station signals this reference pair to the terminal, and both sides use it as a common basis for determining switching gap requirements. This intermediary enables consistent understanding between base station and terminal without limiting the overall multi-band switching capability.
2Adaptability or versatility
If uplink transmission switching among multiple frequency bands is implemented, then the network deployment flexibility is improved, but the scheduling efficiency deteriorates due to inconsistent switching gap understanding
Solution Approach 1:
The patent applies preliminary action by having the base station signal the reference frequency band pair to the terminal in advance. This allows both sides to pre-determine the switching gap requirements based on the referenced band pair, improving scheduling efficiency while maintaining deployment flexibility.
Solution Approach 2:
The patent establishes a feedback mechanism where the terminal uses the signaled reference frequency band pair to determine switching gap requirements and applies this determination in uplink transmissions. The base station can observe the transmission patterns and verify consistent understanding, enabling efficient scheduling across multiple frequency bands.
Data Source
AI summary
The present invention provides an uplink transmission method and device, and a storage medium. The uplink transmission method comprises: when a terminal supports uplink transmission switching on a plurality of frequency bands, determining whether a switching gap is required between two adjacent uplink transmissions of the terminal, wherein the total number of the frequency bands is greater than 2. In the present disclosure, when the terminal supports uplink transmission switching among multiple frequency bands, and the total number of plurality of frequency bands is greater than 2. According to the present invention, when the terminal supports uplink transmission switching on a plurality of frequency bands, wherein the total number of the plurality of frequency bands is greater than 2, the terminal and a base station can determine, on the basis of the same principle, whether a switching duration is required between two adjacent uplink transmissions of the terminal, so that the terminal and the base station are ensured to be consistent in understanding, the flexibility of network deployment and scheduling is improved, the uplink transmission switching enhancement is achieved in an NR system, and the availability is high.