Dual-Connectivity NR Transmit Power Control for Critical Packets
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Solution Overview
Problem
In dual connectivity mode, terminals face challenges in properly allocating transmit power between uplink data transmission to 5G gNB and 4G eNB, leading to potential power insufficiency and service interruptions.
Innovation Solution
A transmit power control method for terminals in dual connectivity mode, where the terminal increases the transmit power of the NR link when sending specific data packets over the NR link, ensuring sufficient power for transmission and avoiding retransmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal allocates transmit power equally between NR link and LTE link, then the power allocation is simple, but the transmit power for critical data packets may be insufficient
Solution Approach 1:
The patent applies local quality by differentiating power allocation based on data packet types. Critical data packets (first data packets) receive enhanced power allocation on the NR link, while non-critical data packets (second data packets) use standard power allocation. This is achieved by identifying packet priority and dynamically adjusting power distribution, ensuring that only specific critical transmissions receive additional power resources rather than uniformly increasing power across all transmissions.
Solution Approach 2:
The patent implements dynamics by making power allocation adaptive rather than static. The terminal dynamically adjusts transmit power based on real-time conditions: when a first data packet requires transmission, the terminal increases NR link power to a first value; when only second data packets are transmitted, power is allocated according to standard procedures. This dynamic adjustment ensures power sufficiency for critical transmissions while maintaining simplicity for routine operations.
2Reliability
If the terminal increases transmit power for NR link to ensure sufficient power for critical data, then transmit power sufficiency is improved, but power allocation complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing power allocation rules and thresholds before actual data transmission. The terminal is configured with criteria for identifying first data packets versus second data packets, and pre-determined power levels (first value for critical packets, second value for non-critical). When transmission is needed, the terminal simply checks which category the packet falls into and applies the corresponding pre-established power level, avoiding complex real-time calculations and maintaining operational simplicity.
3Manufacturing precision
If the terminal uses dynamic power adjustment based on data packet priority, then transmit power allocation accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing data packets into distinct categories (first data packets requiring enhanced power, second data packets with standard power requirements). This segmentation simplifies control logic by replacing continuous power optimization with discrete category-based decisions. The terminal identifies packet type and applies corresponding power levels, reducing processing complexity while maintaining allocation precision through clear categorization criteria.
Data Source
AI summary
This application provides a transmit power control method, a terminal, a chip system, and a system. The method includes: A terminal connects to a 4G network device over an LTE link and connects to a 5G network device over an NR link, where transmit power of the NR link is first transmit power; determines to send a first data packet over the NR link, where the first data packet is a preset data packet; adjusts the first transmit power to second transmit power, where the second transmit power is greater than the first transmit power; and sends the first data packet at the second transmit power over the NR link.