Carrier Signal Selection for 5G Uplink Interference
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Solution Overview
Problem
In 5G radio access non-independent operation scenarios, user equipment (UE) with limited uplink coverage faces interference and power sharing issues when simultaneously transmitting signals over multiple carriers, leading to poor system performance and increased latency due to the dependency on base station scheduling.
Innovation Solution
A method and apparatus for determining and selecting time domain resource information of different carrier signals to optimize data transmission, allowing the UE to choose the most suitable carrier signal for transmission based on pre-defined or coordinated priorities between base stations, thereby reducing interference and improving system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE simultaneously transmits signals over multiple carriers, then the data transmission capacity is improved, but the interference and power sharing issues worsen leading to poor system performance
Solution Approach 1:
The patent segments the time domain resources into different time units (slots, subframes, or frames) and assigns specific carriers to transmit in different time units. This time-division multiplexing approach allows multiple carriers to share the limited uplink resources without simultaneous transmission, thereby avoiding interference and power sharing issues while maintaining overall data transmission capacity.
2Productivity
If the UE simultaneously transmits signals over multiple carriers, then the data transmission capacity is improved, but the uplink coverage is worsened due to limited maximum transmission power
Solution Approach 1:
The patent divides time domain resources into discrete time units and assigns different carriers to different time units. This ensures that the UE transmits on only one carrier at any given time, concentrating the limited maximum transmission power on a single carrier. This concentration of power maintains or improves uplink coverage while still achieving high data transmission capacity through the use of multiple carriers across different time periods.
3Productivity
If the base station schedules the UE to perform data transmission on multiple carriers, then the resource utilization is improved, but the intermodulation interference occurs
Solution Approach 1:
The patent segments the transmission timeline into distinct time units and assigns different carriers to different time units. This time-division approach allows the base station to schedule the UE on multiple carriers across different time periods, maximizing resource utilization while preventing simultaneous transmission that would cause intermodulation interference. The scheduling flexibility is maintained through the time domain resource indication information.
4Ease of operation
If the UE depends on base station scheduling for carrier selection, then the system control is improved, but the transmission latency is increased
Solution Approach 1:
The patent employs preliminary action by pre-configuring time domain resource allocation patterns and carrier associations before actual data transmission. The base station provides time domain resource indication information in advance that enables the UE to autonomously determine which carrier to use in each time unit without requiring real-time scheduling decisions. This reduces transmission latency while maintaining system control through the pre-established resource allocation framework.
Data Source
AI summary
Provided are a data transmission method or apparatus. The method includes determining time domain resource information of different carrier signals used for performing data transmission; and sending configuration information to a UE, where the configuration information is used by the UE for determining the time domain resource information of the different carrier signals used for performing the data transmission.