Multiplexing Priority UCI on PUCCH via Separate Encoding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently multiplexing higher priority and lower priority uplink control information (UCI) on a physical uplink control channel (PUCCH), leading to potential interference, retransmissions, and increased power consumption.
Innovation Solution
Configuring user equipment (UE) to separately encode lower priority UCI and higher priority UCI using different or the same coding rates, and then multiplexing these encoded UCI on the same PUCCH by mapping them to physical uplink channel resources based on priority.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If higher priority and lower priority UCI are multiplexed on the same PUCCH without separate encoding, then resource utilization is improved, but interference between priorities increases and reliability deteriorates
Solution Approach 1:
The patent segments UCI into different priority levels (first priority and second priority) and applies separate encoding processes to each priority level. This segmentation allows the system to maintain reliable transmission for high-priority UCI while efficiently utilizing resources for lower-priority UCI on the same PUCCH channel.
Solution Approach 2:
The patent applies different coding rates locally to different priority levels of UCI. First priority UCI is encoded with a first coding rate while second priority UCI is encoded with a second coding rate, allowing each priority level to have optimized error protection tailored to its specific reliability requirements.
2Reliability
If separate encoding with different coding rates is applied to different priority UCI, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The encoding process is segmented into separate streams for different priority levels, with each stream processed independently using its own coding rate. This segmentation simplifies the overall encoding logic by avoiding complex joint encoding schemes while still achieving differentiated protection levels.
Solution Approach 2:
The patent changes the encoding parameter (coding rate) based on priority level, using a first coding rate for first priority UCI and a second coding rate for second priority UCI. This parameter differentiation achieves reliable transmission without requiring complex adaptive encoding algorithms.
3Productivity
If separate encoding and multiplexing of priority-based UCI is implemented, then transmission efficiency is improved, but power consumption increases
Solution Approach 1:
The patent applies partial differentiation in encoding - not all UCI requires the same level of protection. Second priority UCI can use a lower coding rate requiring less processing power, while only first priority UCI receives the higher level of encoding protection, optimizing the balance between efficiency and power consumption.
Solution Approach 2:
By changing the coding rate parameter based on priority, the system avoids the excessive power consumption that would result from applying maximum protection to all UCI. The first coding rate is applied only when necessary for first priority UCI, reducing overall processing energy requirements.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. A user equipment (UE) may separately encode lower priority uplink control information (UCI) and higher priority UCI, and multiplex the encoded lower priority UCI and the encoded higher priority UCI on the same physical uplink channel (e.g., a physical uplink control channel (PUCCH)). The UE may be configured with multiple coding rates, which the UE may select from based on a payload size associated with each of the lower priority UCI and the higher priority UCI. Alternatively, the UE may be configured with a separate set of coding rates for the lower priority UCI and a separate set of coding rates for the higher priority UCI. The UE may multiplex the lower priority UCI and the higher priority UCI by mapping to physical uplink channel resources based on an order (e.g., mapping higher priority UCI followed by mapping lower priority UCI).