Uplink Control Multiplexing on PUSCH for Lower 5G NR Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current research on reducing power consumption in terminal devices primarily focuses on downlink transmission, neglecting the optimization of uplink transmission in 5G NR devices, which consume significant power due to large bandwidth, multiple antennas, and complex baseband processing.
Innovation Solution
Optimizing uplink control information transmission by allowing transmission of uplink control information through the physical uplink shared channel (PUSCH) under specific time domain location conditions, reducing the need for separate PUCCH transmission and employing bit concatenation or puncturing methods to combine UCI with PUSCH.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink control information is transmitted separately through PUCCH and uplink data through PUSCH, then transmission reliability is improved, but power consumption increases and transmission efficiency decreases
Solution Approach 1:
The patent combines uplink control information and uplink data into a single PUSCH transmission by multiplexing UCI bits with data bits. The terminal device determines a first bit sequence by multiplexing the UCI bit sequence with the data bit sequence, then transmits both together on PUSCH. This eliminates the need for separate PUCCH transmission, reducing power consumption while maintaining transmission reliability through the redundancy of joint transmission.
2Reliability
If uplink control information is transmitted separately through PUCCH, then transmission reliability is improved, but transmission efficiency decreases
Solution Approach 1:
The patent merges control information and data transmission into a single PUSCH operation. By multiplexing UCI and data bits together and transmitting them simultaneously on PUSCH, the system reduces the number of separate transmission operations required. This increases transmission efficiency by consolidating what would otherwise be two separate transmissions (PUCCH for control, PUSCH for data) into one unified transmission, while preserving reliability through the multiplexing scheme.
3Reliability
If multiple separate uplink transmissions are performed, then transmission reliability is improved, but the number of transmission operations increases
Solution Approach 1:
The patent reduces transmission complexity by merging control and data transmissions. The terminal device performs a single PUSCH transmission that carries both UCI and data, rather than performing separate PUCCH and PUSCH transmissions. This is achieved by determining a first bit sequence through multiplexing of UCI and data bit sequences, then transmitting this combined sequence on PUSCH, thereby reducing the number of transmission operations from two to one while maintaining reliability.
4Use of energy by moving object
If uplink control information is multiplexed with uplink data on PUSCH, then power consumption is reduced, but transmission flexibility decreases
Solution Approach 1:
The patent introduces dynamic adaptability in the multiplexing process. The terminal device dynamically determines the bit sequence length and multiplexing scheme based on the actual amounts of UCI and data to be transmitted. The first bit sequence length is determined based on the second bit sequence length (data) and third bit sequence length (UCI), allowing the system to adapt the transmission parameters to different traffic conditions while maintaining the power-saving benefit of combined transmission.
Data Source
AI summary
A transmission method is disclosed. A terminal device transmits uplink control information to a network device through a PUSCH when a time domain location of a PUCCH including the uplink control information is between that of DCI and that of a PUSCH; or a time domain location of a PUSCH is before that of a PUCCH, and a time domain length between a time domain location of a PDSCH corresponding to the uplink control information and the time domain location of the PUSCH is greater than or equal to a first time domain length; or a time domain location of a PUSCH is before that of a PUCCH, and a time domain length between a time domain location of a CSI-RS corresponding to the uplink control information and the time domain location of the PUSCH is greater than or equal to a second time domain length.