Uplink Channel Collision Handling via PUCCH-PUSCH Multiplexing
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently handling channel collisions between physical uplink control channels (PUCCH) and physical uplink shared channels (PUSCH) during parallel uplink transmission, leading to resource allocation inefficiencies and potential data losses.
Innovation Solution
A method where user equipment (UE) partitions channels into groups based on control and data transmission, identifies overlapping channels, and multiplexes PUCCH with PUSCH based on priority and overlap, resolving collisions by dropping lower-priority channels or multiplexing them to optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If parallel uplink transmission is implemented to improve data transmission efficiency, then productivity is improved, but channel collisions between PUCCH and PUSCH occur causing resource allocation inefficiencies and data losses
Solution Approach 1:
The patent segments the set of component carriers into two distinct groups: a first set of CCs configured for parallel uplink transmission (both data and control), and a second set of CCs configured for data transmission only. This segmentation allows the system to simultaneously enable parallel transmission benefits while providing a mechanism to avoid collisions by directing control channel transmissions to appropriate carriers, thus resolving the contradiction between improved productivity and maintained reliability.
2Productivity
If PUCCH and PUSCH are transmitted simultaneously on the same component carrier, then resource utilization is improved, but channel collisions occur leading to data losses
Solution Approach 1:
The patent applies local quality by configuring different transmission characteristics for different component carriers. Specifically, the first set of CCs is configured with the quality attribute of allowing both PUCCH and PUSCH transmissions (parallel uplink), while the second set of CCs is configured with the quality attribute of PUSCH-only transmission. This localized differentiation allows the system to exploit parallel transmission benefits where appropriate while avoiding collision-induced data losses in other regions, thus resolving the contradiction between resource utilization and data loss prevention.
Data Source
AI summary
A user equipment (UE) may partition a plurality of channels including physical uplink control channels (PUCCHs) and physical uplink shared channels (PUSCHs) into two groups, the plurality of channels being scheduled for transmission on a first set of component carriers (CCs) for communicating data and a second set of CCs for communicating control information and data, determine a first subset of PUSCHs of the one or more PUSCHs that is in the second set of CCs, determine that a first PUCCH of the one or more PUCCHs overlaps in time with at least a part of at least one PUSCH of the first subset of PUSCHs, and multiplex the first PUCCH with a first PUSCH of the first subset of PUSCH based on the determination that the first PUCCH overlaps in time with at least a part of the at least one PUSCH.