Power-Efficient Measurement Reporting for Multi-Connectivity Cellular Networks
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Solution Overview
Problem
In cellular communication networks, especially with multi/dual connectivity, User Equipments (UEs) face high power consumption when transmitting measurement reports over multiple connections, as they often require different uplink transmission powers, leading to inefficient power usage.
Innovation Solution
The method involves selecting the most power-efficient Radio Resource Control (RRC) connection for transmitting measurement reports based on calculated uplink transmission powers to Master and Secondary Nodes, allowing reports to be sent over a single RRC connection that requires the least transmission power, and potentially combining reports into a single message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If measurement reports are transmitted over multiple RRC connections in multi/dual connectivity, then measurement reporting completeness is improved, but power consumption increases
Solution Approach 1:
The patent combines multiple measurement reports (from master node and secondary node) into a single RRC message transmitted over one RRC connection. This merging approach maintains measurement reporting completeness while reducing the number of separate transmission operations, thereby lowering power consumption.
Solution Approach 2:
The patent changes the transmission parameter by selecting the RRC connection with the lowest uplink transmission power requirement. By dynamically choosing the optimal connection based on power parameters, the system achieves power-efficient measurement reporting without sacrificing completeness.
2Reliability
If measurement reports are transmitted over multiple RRC connections, then measurement coverage is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple measurement reports into a single RRC message structure that can be transmitted over one connection. This consolidation reduces the complexity of managing multiple separate transmission operations while maintaining comprehensive measurement coverage from both master and secondary nodes.
Solution Approach 2:
The patent introduces an intermediary approach where measurement reports from multiple nodes are aggregated and transmitted through a selected RRC connection as a unified message. This intermediary structure simplifies the transmission management architecture while preserving the measurement coverage achieved through multi-node monitoring.
3Productivity
If uplink transmission power is optimized for each RRC connection, then transmission efficiency is improved, but power consumption increases due to multiple transmissions
Solution Approach 1:
The patent combines multiple transmission operations into a single transmission by merging measurement reports from different nodes into one RRC message. This eliminates redundant transmissions and reduces the cumulative power consumption while maintaining the transmission efficiency benefits of optimized uplink power selection.
Solution Approach 2:
The patent optimizes the transmission by selecting the RRC connection with the most favorable uplink power characteristics. By changing the transmission parameter to use the lowest power connection, the system achieves both transmission efficiency and power savings, avoiding the need for multiple high-power transmissions.
Data Source
AI summary
According to an example aspect of the present invention, there is provided a method for multi-connectivity, the method comprising selecting by a user equipment, based on an uplink transmission power to a first node and an uplink transmission power to at least one second node, a Radio Resource Control, RRC, connection for transmitting measurement reports and transmitting by the user equipment, using the selected RRC connection, a measurement report associated with a transmission of the first node and/or a measurement report associated with a transmission of the at least one second node.