Multi-Panel PUCCH Transmission via Single DCI
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Solution Overview
Problem
Current cellular communication systems face challenges in implementing simultaneous physical uplink control channel (PUCCH) transmission over multiple panels, particularly in resource allocation, UCI bit mapping, demodulation reference signal mapping, and PUCCH transmission beam mapping, as well as handling overlapping transmissions with physical uplink shared channels.
Innovation Solution
The proposed solution involves a methodology for single-DCI simultaneous PUCCH transmissions through multiple UE antenna panels, where the base station configures the UE to support simultaneous PUCCH transmission schemes, allowing the UE to transmit PUCCH signals using multiple panels, and a UCI multiplexing procedure to manage overlapping transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If simultaneous PUCCH transmission over multiple panels is implemented, then reliability is improved, but device complexity increases
Solution Approach 1:
The UE is divided into multiple antenna panels, with each panel independently capable of transmitting PUCCH signals. This segmentation allows simultaneous transmissions across different panels, improving reliability through spatial diversity while managing complexity by distributing transmission functions across separate hardware modules.
Solution Approach 2:
The patent extends PUCCH transmission from a single spatial dimension to multiple spatial dimensions by utilizing multiple antenna panels. This dimensional expansion enables simultaneous transmissions in different spatial directions, enhancing reliability without requiring temporal or frequency multiplexing that would increase processing complexity.
2Loss of time
If simultaneous PUCCH transmission over multiple panels is implemented, then latency is reduced, but resource allocation complexity increases
Solution Approach 1:
The base station pre-configures multiple PUCCH resource sets associated with different antenna panels before simultaneous transmission is needed. This preliminary configuration includes defining resource blocks, transmission parameters, and panel associations, which simplifies the real-time resource allocation process and reduces latency during actual PUCCH transmissions.
Solution Approach 2:
The patent introduces an intermediary mapping mechanism that associates specific PUCCH resource sets with specific antenna panels. This intermediary layer simplifies resource management by providing a direct mapping between resources and panels, avoiding complex real-time scheduling decisions and reducing both latency and allocation complexity.
3Productivity
If overlapping PUCCH and PUSCH transmissions are handled, then communication efficiency is improved, but processing complexity increases
Solution Approach 1:
The patent applies different handling strategies for overlapping PUCCH and PUSCH transmissions based on local conditions such as panel association, resource overlap patterns, and transmission priorities. Rather than applying a uniform complex processing algorithm, the system makes localized decisions at each panel-resource intersection, improving efficiency while managing processing complexity through context-aware simplifications.
Data Source
AI summary
Techniques are disclosed herein for single downlink control information based simultaneous physical uplink control channel transmission over multi-panel. An example embodiment can include a user equipment (UE) configured to receive a first indication as to a multi-panel simultaneous transmission scheme for simultaneous transmission of a physical uplink control channel (PUCCH) transmission in the frequency domain (FD) based on a radio resource control (RRC) transmission, the PUCCH transmission including a first PUCCH transmission through a first panel over a first FD part and a second PUCCH transmission through a second panel over a second FD part. The UE can transmit the first PUCCH transmission through first panel over the first FD part via the multi-panel simultaneous transmission scheme. The UE can further simultaneously transmit the second PUCCH transmission through the second panel over the second FD part via the multi-panel simultaneous transmission scheme.