Parallel Uplink Transmission Power Management
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Solution Overview
Problem
In wireless communication networks, simultaneous transmissions of PUCCH and PUSCH can exceed the maximum allowed transmit power, leading to reduced transmission power and negatively impacting reception, especially when power reduction is significant.
Innovation Solution
A user device and network device system that detects parallel uplink transmissions and adjusts modulation and coding schemes, including overriding initial schemes with alternative ones, to manage transmission power effectively, ensuring reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parallel uplink transmissions (PUCCH and PUSCH) are performed simultaneously, then transmission diversity and reliability are improved, but the total transmit power exceeds the maximum allowed power limit, leading to power reduction and degraded reception quality
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the modulation and coding scheme (MCS) indices for PUSCH based on the detected parallel transmission condition. When parallel transmissions are detected, the system modifies the MCS parameter to reduce the PUSCH power contribution, thereby keeping the total transmit power within the maximum allowed limit while maintaining transmission reliability through the complementary PUCCH transmission.
2Productivity
If the modulation and coding scheme is optimized for high spectral efficiency, then data transmission speed is improved, but the transmission power increases and may exceed the maximum allowed limit during parallel transmissions
Solution Approach 1:
The patent implements dynamics by making the modulation and coding scheme adaptive rather than fixed. The system continuously monitors transmission conditions and dynamically adjusts the MCS index for PUSCH based on whether parallel transmissions are detected. This dynamic adjustment allows the system to optimize spectral efficiency during single transmissions while preventing power excess during parallel transmissions, balancing productivity and power constraints.
Data Source
AI summary
Various example embodiments relate to a solution for wireless communication. A user device may be configured to receive, from a network device, at least one parameter for a first uplink transmission from the user device, the at least one parameter relating to at least one of one or more modulation orders or one or more coding rates for the first uplink transmission; and utilize the at least one parameter for the first uplink transmission when a parallel uplink transmission is detected at the user device. Devices, methods, and computer programs are disclosed.