Dual-Connectivity Uplink Power Sharing With Timing Offset Scheduling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing power sharing between dual connectivity nodes, particularly in 5G NR environments, where optimal power allocation is needed to ensure reliable communication with both LTE and 5G NR base stations.
Innovation Solution
A method and system for dynamic power sharing in dual connectivity scenarios, involving determining timing values and offsets for uplink communications to cell groups, allocating transmit power, and adjusting based on scheduling information to optimize power distribution between Master Cell Group (MCG) and Secondary Cell Group (SCG).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic power sharing is implemented between MCG and SCG, then power allocation efficiency is improved, but system complexity increases due to timing offset determination and scheduling coordination
Solution Approach 1:
The UE determines timing values and timing offset values in advance for uplink communications to different cell groups. This preliminary timing setup enables the network to perform dynamic power sharing without real-time complexity, as the timing relationships are pre-established through RRC configuration and uplink timing adjustment procedures.
Solution Approach 2:
The timing offset value acts as an intermediary parameter that bridges the MCG and SCG timing domains. By introducing this intermediate timing reference, the system can coordinate power allocation between the two cell groups without requiring direct complex interaction, simplifying the overall control mechanism.
2Reliability
If timing offset values are determined and transmitted for power sharing, then communication reliability is improved, but signaling overhead increases
Solution Approach 1:
The timing offset value is derived from existing timing parameters (K1, K2, d1, d2) through mathematical relationships rather than being independently signaled. This parameter transformation approach maintains communication reliability by ensuring accurate timing alignment while minimizing additional signaling overhead, as the network can calculate the timing offset from already-configured parameters.
3Reliability
If power is prioritized for MCG to ensure coverage, then coverage reliability is improved, but power flexibility for SCG is reduced
Solution Approach 1:
The power sharing mechanism is designed to be dynamic rather than static. The UE can adjust power allocation between MCG and SCG based on real-time conditions, with the timing offset value enabling flexible power distribution. The network can modify power sharing decisions through scheduling information and uplink timing adjustments, allowing adaptation to different coverage scenarios while maintaining MCG priority when needed.
Data Source
AI summary
Technologies and techniques are disclosed for wireless communication in a dual connectivity wireless communication network. A first uplink timing value is determined for control information to a first cell group. A second uplink timing value is determined for control information to a second cell group. Transmit power may be determined and allocated for the first and second uplink communications. A timing offset value is determined relative to the second timing value and transmitted to the wireless communication network. Scheduling information is received in response to transmitting the timing offset value, and at least one of the first uplink communication or the second uplink communication are transmitted based on the scheduling information.