Conditional Secondary Cell Addition Bearer Remapping
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Solution Overview
Problem
Current communication networks face challenges in minimizing traffic flow interruption and signaling load during conditional secondary cell addition and modification procedures in multi-connectivity communications, particularly in dual connectivity scenarios, where bearers are remapped between primary and secondary cells.
Innovation Solution
The implementation of a conditional reconfiguration procedure that includes a connection reconfiguration information set, which specifies execution conditions and remapping timing for bearers, allowing for controlled and efficient switching between communication links, thereby minimizing traffic interruption and signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conditional secondary cell addition procedure is implemented to enable seamless bearer remapping, then mobility robustness is improved, but signaling load increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring conditional reconfiguration information including execution conditions and remapping conditions before handover is needed. The UE receives and stores configuration data with bearer remapping conditions in advance, so when handover becomes necessary, the execution can proceed immediately without extensive real-time signaling, thus reducing signaling load while maintaining mobility robustness
2Reliability
If bearer remapping is performed during conditional secondary cell addition, then traffic flow continuity is improved, but traffic flow interruption occurs during the procedure
Solution Approach 1:
The patent applies preliminary action by pre-configuring the bearer remapping conditions and execution parameters before the actual handover event. The UE receives the conditional reconfiguration information in advance, including which bearers should be remapped and under what conditions, allowing the system to prepare the traffic flow paths beforehand and minimize interruption during actual execution
Solution Approach 2:
The patent applies dynamics by implementing conditional and staged bearer remapping rather than simultaneous remapping of all bearers. The system dynamically determines which bearers to remap based on execution conditions and remapping conditions, allowing traffic to be gradually transitioned between cells based on network state and QoS requirements, thereby reducing traffic flow interruption
3Manufacturing precision
If connection reconfiguration information set is provided with detailed remapping conditions, then bearer remapping precision is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the reconfiguration information into distinct components: execution conditions (when to apply the reconfiguration) and remapping conditions (which bearers to remap and when). This segmentation allows the system to provide precise control over bearer remapping while organizing the configuration data in a structured, manageable way that reduces the perceived complexity for both the network and UE
Data Source
AI summary
An apparatus for use by a communication network control element or function configured to control a communication of a communication element or function in a communication network, the apparatus comprising at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry, wherein the at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least: to conduct a conditional secondary cell addition procedure for establishing, in addition to a first communication link to a primary cell being controlled by the communication network control element or function forming a communication path of the communication element or function, a second communication link to a secondary cell, to send, to the communication element or function, a connection reconfiguration information set regarding the establishment of the second communication link, wherein the connection reconfiguration information set includes information indicating an execution condition of the conditional secondary cell addition procedure and information indicating a remapping condition controlling a timing for remapping at least one specified bearer from the first communication link to the second communication link.