Dual Connectivity Uplink Path Selection and Power Allocation
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Solution Overview
Problem
In dual connectivity scenarios, the uplink split bearer scheme in 5G systems experiences inefficiencies due to redundant data volume reflection, leading to surplus radio resources, unnecessary transmission, and power wastage, as well as transmission failures caused by inadequate power allocation to the secondary path.
Innovation Solution
An electronic device is designed to selectively use a transmission path based on radio access technology for uplink data transmission, stopping data transmission on one path while maintaining control information transmission on another, and dynamically adjusting power allocation to prevent resource wastage and transmission failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the PDCP entity data volume is reflected in both primary and secondary paths for uplink split bearer transmission, then the data transmission can utilize both 4G and 5G paths simultaneously, but the data volume is reflected redundantly in both paths, requiring more uplink radio resources than actually needed
Solution Approach 1:
The patent extracts the redundant data volume information from the secondary path's resource allocation calculation. By identifying that the PDCP entity data volume is already accounted for in the primary path, the invention removes this redundant reflection from the secondary path's resource request, thereby reducing unnecessary uplink radio resource allocation while maintaining the benefits of dual-path transmission.
2Ease of operation
If dynamic power sharing scheme is used to allocate transmission power preferentially to the primary path, then power management becomes simplified, but the transmission power allocated to the secondary path may be insufficient, causing transmission failures
Solution Approach 1:
The patent implements dynamic power allocation that adjusts power distribution between primary and secondary paths based on real-time transmission conditions. Rather than fixed preferential allocation, the system dynamically determines power sharing ratios, allowing the secondary path to receive adequate power when needed while maintaining simplified power management through automated adaptation to changing channel conditions and traffic requirements.
3Use of energy by moving object
If transmission power is scaled down according to overall transmission power limit, then power consumption is reduced, but repeated transmission failures occur, causing waste of transmission power and pending phenomena
Solution Approach 1:
The patent applies partial power scaling by allocating power proportionally to each path based on their specific requirements rather than uniformly scaling down all transmissions. The system calculates the minimum necessary power for each path to achieve successful transmission, avoiding excessive power reduction that would cause failures while still reducing overall power consumption compared to full-power transmission on both paths.
Data Source
AI summary
An electronic device includes: communication circuitry; one or more processors; and memory storing instructions that, when executed by the one or more processors individually or collectively, cause the electronic device to: select one of a transmission path based on a first radio access technology (RAT) and a transmission path based on a second RAT as a first transmission path, wherein the first transmission path is an uplink data transmission path to be used in the electronic device for a dual connectivity communication, perform, via the communication circuitry, an operation of stopping uplink data transmission and maintaining uplink control information transmission on a second transmission path other than the first transmission path among the transmission path based on the first RAT and the transmission path based on the second RAT, and perform, via the communication circuitry, an operation of transmitting at least one of uplink data or uplink control information on the first transmission path.