Spatial Multiplexing PUCCH and SRS via Antenna Port Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G NR technology constraints limit uplink transmissions to only one channel per component carrier, leading to channel collisions when multiple channels are scheduled simultaneously, requiring complex rules or channel dropping.
Innovation Solution
Spatial multiplexing of uplink control channels, such as PUCCH and SRS, using different sets of antennas within the same component carrier, allowing simultaneous transmission by determining specific time and frequency resources to avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spatial multiplexing is implemented to allow simultaneous transmission of multiple uplink channels, then communication efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the antenna resources by dividing the antenna array into different antenna ports and groups. Different uplink channels (PUCCH, PUSCH, SRS) are assigned to different antenna ports or groups, allowing simultaneous transmission through spatial separation. This segmentation enables multiple channels to coexist without collision while maintaining manageable system complexity through structured resource allocation.
Solution Approach 2:
The patent introduces the spatial dimension (antenna ports) as an additional resource dimension beyond traditional time and frequency resources. By multiplexing channels in the spatial domain rather than only in time or frequency, the system achieves higher communication efficiency without proportionally increasing complexity, as spatial multiplexing leverages existing MIMO capabilities.
2Ease of operation
If channel collision avoidance rules are simplified to reduce complexity, then ease of operation is improved, but reliability deteriorates due to unresolved channel conflicts
Solution Approach 1:
The patent implements preliminary action by pre-configuring antenna port assignments and spatial multiplexing parameters before channel transmission occurs. The system establishes predetermined rules for channel-to-antenna port mapping, allowing UEs to automatically resolve channel conflicts without complex real-time negotiations. This pre-planned resource allocation maintains reliability by ensuring channel conflicts are avoided from the outset while keeping operation simple through automated, rule-based allocation.
Data Source
AI summary
A design is provided for spatially multiplexing uplink channels. A user equipment (UE) detects that a Physical Uplink Control Channel (PUCCH) and a Sounding Reference Signal (SRS) are to be transmitted simultaneously. The UE decides to spatially multiplex the PUCCH and the SRS for simultaneous transmission via different sets of one or more antennas. The UE determines time and frequency resources for the PUCCH and the SRS to avoid collision of at least a portion of the PUCCH with the SRS. The UE transmits the spatially multiplexed PUCCH and SRS using the determined time and frequency resources.