Pseudo-Dynamic Power Sharing for MR-DC Link Stability
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing power allocation between different radio access technologies (RATs) like LTE and NR, especially in dual connectivity scenarios, where the network configuration may not always be available or correct, leading to potential radio link failures due to total power constraints.
Innovation Solution
The implementation of a pseudo dynamic power sharing (DPS) algorithm and a local power split algorithm to manage power allocation between LTE and NR transmissions, ensuring that the average transmission power does not exceed the maximum allowed power class, with the pseudo DPS algorithm using a lookup table to determine power levels and the local power split algorithm simplifying power sharing when network configuration is absent or incorrect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network configuration provides power allocation parameters for both LTE and NR, then power management can be performed according to the configuration, but the configuration may be incorrect or unavailable leading to total power exceeding the power class and causing radio link failure
Solution Approach 1:
The patent applies preliminary action by establishing default power allocation ratios (e.g., 80:20, 70:30, 60:40, 50:50) between LTE and NR transmissions before network configuration is received or verified. The UE proactively configures power sharing parameters in advance, so that when network configuration is absent or incorrect, the device can immediately fall back to pre-configured power allocation schemes, preventing radio link failure and ensuring continuous operation.
2Productivity
If the UE transmits at high power levels on both LTE and NR simultaneously, then data transmission performance is improved, but the total transmission power may exceed the maximum allowed power class
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the power allocation ratio between LTE and NR transmissions based on multiple factors including network configuration, channel conditions, and service requirements. The UE modifies transmission power parameters in real-time, switching between different power sharing modes (e.g., network-configured ratios, default ratios, or service-specific ratios) to optimize data transmission while ensuring the total power remains within the device's power class limits.
3Power
If the UE reduces transmission power to stay within power class limits, then power constraints are satisfied, but coverage area and signal quality deteriorate
Solution Approach 1:
The patent applies dynamics by implementing a dynamic power sharing mechanism that continuously adapts power allocation between LTE and NR based on real-time conditions. When the UE detects that total power needs to be reduced to comply with power class limits, it dynamically switches between different power allocation ratios and can selectively maintain higher power on the RAT with better channel conditions or higher priority services, thereby optimizing coverage area and signal quality within the available power budget.
Data Source
AI summary
In an aspect, a user equipment (UE) receives a parameter representing a maximum transmission power, transmits first radio frequency (RF) signals to a first node over a first wireless communication link in accordance with a first radio access technology (RAT) during a plurality of time segments, wherein the first RF signals are transmitted during the plurality of time segments at one or more first power levels, and transmits second RF signals to a second node over a second wireless communication link in accordance with a second RAT during the plurality of time segments, wherein the second RF signals are transmitted during the plurality of time segments at one or more second power levels, and wherein a sum of an average of both the one or more first power levels and the one or more second power levels over the plurality of time segments does not exceed the maximum transmission power.