UCI Multiplexing in PUSCH for NR User Equipment
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Solution Overview
Problem
The existing technologies for multiplexing Uplink Control Information (UCI) in Physical Uplink Shared Channel (PUSCH) in New Radio (NR) access technology face challenges in efficiently handling UCI bits generated before and after an Uplink grant, leading to resource management issues and suboptimal system performance.
Innovation Solution
A method where UCI bits are processed and transmitted based on the comparison of UCI bits generated before and after the Uplink grant, using a UCI multiplexing rule that adjusts the number of bits according to the Downlink assignment indicators and configured coding rates, allowing for efficient bundling and compression to optimize resource utilization in PUSCH.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UCI bits from both before and after UL grant are multiplexed in PUSCH, then user throughput and system performance improve, but resource management complexity increases
Solution Approach 1:
The patent implements dynamic resource management by comparing the number of UCI bits (M from before UL grant, N from after UL grant) with the maximum capacity (Q) and adjusting the multiplexing strategy accordingly. The system dynamically determines whether to multiplex all bits, truncate, or prioritize certain bits based on real-time resource availability, thereby improving throughput while managing complexity through adaptive decision-making.
Solution Approach 2:
The patent changes the parameter of UCI bit handling by introducing configurable parameters M, N, P, and Q that define the number of bits from different time periods and the maximum capacity. By comparing these parameters and adjusting the multiplexing behavior based on their values, the system optimizes resource utilization while maintaining manageable complexity through parameter-driven control.
2Productivity
If UCI bits are multiplexed in PUSCH, then system performance improves, but the number of bits may exceed maximum capacity leading to loss of information
Solution Approach 1:
The patent applies partial action by selectively multiplexing UCI bits based on capacity constraints. When the total bits (M+N) exceed the maximum capacity Q, the system performs partial multiplexing by prioritizing certain bits or truncating others according to predefined rules, ensuring that the most critical information is preserved while accepting some information loss to maintain system performance.
Solution Approach 2:
The patent uses parameter comparison (M, N, P, Q) to dynamically adjust the multiplexing behavior. By changing the effective number of bits transmitted based on the relationship between these parameters, the system optimizes the balance between transmitting as much information as possible and staying within capacity limits to prevent information loss.
3Productivity
If UCI bits from DL assignments after UL grant are included, then resource utilization improves, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-defining the rules for handling UCI bits from DL assignments before and after the UL grant. The system establishes beforehand the comparison logic for parameters M, N, P, and Q, and the multiplexing strategies to apply in different scenarios. This preliminary setup reduces processing complexity during actual operation by avoiding ad-hoc decision-making.
Solution Approach 2:
The patent implements dynamic processing by adjusting the handling of UCI bits based on the timing relationship with the UL grant and the capacity constraints. The system dynamically determines which bits to process, prioritize, or truncate based on real-time parameter comparisons, optimizing resource utilization while managing processing complexity through adaptive behavior.
Data Source
AI summary
Provided are a user equipment, base station and wireless communication methods related to multiplexing of UCI in PUSCH in NR. A user equipment comprises: circuitry operative to process UCI bits to be transmitted according to the comparison of the number M of UCI bits generated based on DL assignment(s) before an UL grant from a base station and the number N of UCI bits generated based on DL assignment(s) after the UL grant with the number P of UCI bits indicated in the UL grant and/or the maximum number Q of bits determined based on at least a configured coding rate, wherein each of M, N, P, Q is an integer equal to or larger than 0; and a transmitter operative to transmit the processed UCI bits in PUSCH at a TTI indicated in the UL grant to the base station.