PUSCH UCI Code Rate Compensation for SBFD Uplink Reliability
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Solution Overview
Problem
In TDD communication systems, the limitations on uplink time domain resource allocation lead to reduced uplink coverage and increased latency, and reusing transmission parameters from uplink to subband full duplex (SBFD) time units reduces UCI transmission reliability and affects communication efficiency due to channel environment and interference differences.
Innovation Solution
A communication method that involves a terminal device determining code rate compensation parameters based on received indexes for UCI transmission in both uplink and SBFD time units, adapting to channel environments and interference, thereby improving reliability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If transmission parameters from uplink time unit are reused in SBFD time unit, then device complexity is reduced, but UCI transmission reliability deteriorates due to channel environment and interference differences
Solution Approach 1:
The patent segments the code rate compensation parameters into two distinct sets: one set for uplink time units and another set for SBFD time units. This segmentation allows each set to be optimized independently for its specific channel environment, resolving the contradiction by preventing the use of inappropriate parameters while maintaining manageable complexity through structured parameter organization.
Solution Approach 2:
The patent applies local quality by providing different code rate compensation parameters tailored to specific time unit types. Instead of using a uniform parameter set, the system selects appropriate parameters based on whether the current time unit is an uplink time unit or an SBFD time unit, ensuring optimal performance for each local context while maintaining overall system reliability.
2Ease of operation
If code rate compensation parameters are not adapted to channel environments, then ease of operation is improved, but communication efficiency deteriorates
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple sets of code rate compensation parameters corresponding to different time unit types before actual transmission occurs. The network device prepares these parameter sets in advance, allowing the terminal device to simply select the appropriate pre-configured parameters based on the current time unit type, thus maintaining ease of operation while ensuring communication efficiency through adaptive parameter selection.
3Device complexity
If uplink time domain resource allocation is limited, then device complexity is reduced, but uplink coverage and latency performance deteriorate
Solution Approach 1:
The patent applies dynamics by enabling flexible and dynamic uplink time domain resource allocation through SBFD time units. The system can dynamically switch between traditional uplink time units and SBFD time units, allowing terminal devices to utilize additional uplink transmission opportunities in SBFD configurations. This dynamic resource allocation improves uplink coverage and reduces latency without significantly increasing device complexity, as the terminal device follows network scheduling instructions.
Data Source
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AI summary
This application provides a communication method and a related device, to improve reliability of UCI transmission and improve communication efficiency. In the method, a terminal device receives first information, where the first information indicates N sets of first indexes, one of the N sets of first indexes includes M first indexes, the M first indexes include a first index, the first index corresponds to a first parameter, and the first parameter is for performing code rate compensation on UCI carried in an SBFD time unit; and the first information further indicates P sets of second indexes, one of the P sets of second indexes includes Q second indexes, the Q second indexes include a second index, the second index corresponds to a second parameter, and the second parameter is for performing code rate compensation on UCI carried in an uplink time unit; and the terminal device sends UCI and uplink data based on the first parameter and/or the second parameter, where the UCI and the uplink data are carried on a PUSCH.