UCI Codeword Multiplexing for Reliable Overlapping Priority Levels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently handling uplink control information (UCI) with different priority levels, leading to potential dropping of lower priority transmissions when they overlap with higher priority transmissions, which compromises the reliability of higher priority UCI.
Innovation Solution
A method where a user equipment (UE) encodes a first UCI payload of a first priority level, modifies it to embed information about a second UCI payload of a second priority level, and transmits an uplink channel with the modified first codeword, enabling simultaneous transmission of both UCIs without dropping the lower priority UCI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system transmits only the first codeword for the first UCI payload, then the transmission is simple and efficient, but the second UCI payload with higher priority cannot be reliably transmitted when both UCIs overlap in time
Solution Approach 1:
The patent embeds the second codeword (higher priority UCI) within the first codeword (lower priority UCI) by modifying bits of the first codeword to carry information from the second codeword. This nested structure allows both UCIs to be transmitted simultaneously in a single physical channel, resolving the contradiction by enabling reliable high-priority transmission without requiring separate dedicated resources that would increase system complexity
Solution Approach 2:
The patent merges the transmission of two separate UCI payloads with different priorities into a single combined codeword structure. By multiplexing both UCIs in one transmission opportunity, the system achieves reliable high-priority transmission while maintaining transmission efficiency and avoiding the complexity of separate transmission mechanisms
2Reliability
If the system drops the lower priority UCI when it overlaps with higher priority UCI, then the higher priority UCI can be transmitted reliably, but the lower priority UCI transmission is lost and system resource utilization decreases
Solution Approach 1:
The patent combines both high-priority and low-priority UCI transmissions into a single multiplexed codeword, allowing both to be transmitted simultaneously without dropping either. This merging approach maintains full system resource utilization while ensuring high-priority UCI reliability through embedded error protection mechanisms
3Reliability
If the system uses separate transmissions for first and second UCI payloads, then each UCI can be decoded independently, but the transmission time increases and latency is higher
Solution Approach 1:
The patent merges multiple UCI payloads into a single multiplexed transmission, reducing the number of separate transmission opportunities needed from two to one. This halves the transmission time and latency while maintaining decoding accuracy through the embedded codeword structure that allows independent decoding of each UCI payload
Data Source
AI summary
A method, apparatus, and computer-readable medium for wireless communication at a user equipment (UE). The UE encodes a first uplink control information (UCI) payload of a first priority level to generate a first codeword. The UE modifies the first codeword based on a second UCI payload, wherein information about the second UCI payload is conveyed via a modification of the first codeword. The UE transmits an uplink channel comprising the first codeword and carrying information for the second UCI payload. A base station receives an uplink channel from the UE, comprising a first codeword for a first UCI payload having a first priority level and having a modification that conveys information for a second UCI payload having a second priority level. The base station decodes the second UCI payload based at least in part on the information conveyed based on the modification.