Uplink Control Multiplexing for Priority-Based UCI Mapping
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in performing wireless signal transmission and reception procedures, particularly in handling uplink control information (UCI) with different priorities on a single physical uplink channel.
Innovation Solution
A method and apparatus for encoding and decoding multiple UCIs with different priorities on a single physical uplink channel, allowing for separate encoding and decoding of UCIs based on priority, using a distributed mapping scheme and determining resource elements for each UCI based on available resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple UCIs with different priorities are multiplexed on a single physical uplink channel, then resource utilization is improved, but the complexity of encoding and decoding increases
Solution Approach 1:
The patent segments the UCI encoding process by separately encoding each UCI based on its priority level. High-priority UCIs are encoded independently from low-priority UCIs, allowing for simplified encoding/decoding operations while maintaining efficient resource utilization through multiplexing on the same physical channel.
Solution Approach 2:
The patent applies different encoding characteristics to different UCIs based on their priority levels. Each UCI is encoded with parameters tailored to its specific priority requirements, enabling optimized resource allocation and simplified processing for each UCI type while maintaining overall system efficiency.
2Device complexity
If separate encoding is performed for each UCI, then decoding complexity is reduced, but the overall transmission time increases
Solution Approach 1:
The patent performs preliminary resource mapping and encoding preparation for multiple UCIs before actual transmission. By pre-determining the resource allocation and encoding parameters for each UCI based on priority levels, the system reduces real-time processing complexity and enables more efficient time utilization during transmission.
3Reliability
If resource mapping is performed based on priority, then higher priority UCIs are transmitted more reliably, but lower priority UCIs may experience resource constraints
Solution Approach 1:
The patent implements dynamic resource mapping that adapts to different UCI priority levels and transmission conditions. The resource allocation is flexibly adjusted based on the specific requirements of each UCI type, allowing the system to maintain reliability for high-priority UCIs while providing adequate resources for lower-priority UCIs when available.
Data Source
AI summary
A terminal according to an embodiment of the present invention can: encode a plurality of UCIs comprising a first UCI and a second UCI; perform resource mapping on the encoded bits of the plurality of UCIs on a single physical uplink channel; and perform uplink transmission on the basis of the resource mapping. Even when the first UCI and the second UCI have different priorities, the terminal can separately encode the first UCI and the second UCI on the basis that the first UCI and the second UCI are configured to be multiplexed on the single physical uplink channel, and perform the resource mapping on the second UCI having the lower priority on the basis of the resource mapping of the first UCI having the higher priority.