Secondary Node Addition in Dual Connectivity Wireless Systems
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Solution Overview
Problem
In dual/multi-connection wireless communication scenarios, the process of adding or replacing secondary nodes is lengthy, leading to data transmission delays and reduced probability of using dual connections for data transmission.
Innovation Solution
A dual/multi-connectivity-based secondary node addition/replacement method that involves receiving configuration information from a Master Node (MN), performing measurement evaluations to determine suitable secondary nodes, and initiating a random access process to establish connections efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE measures and evaluates SNs first, then reports results to MN, then receives configuration and establishes connection, then the connection establishment follows standard procedure, but the process takes a long time causing data transmission delay
Solution Approach 1:
The network side performs preliminary actions by sending configuration information to the UE before the UE actually needs to establish a connection. The MN sends configuration information to the UE in advance, allowing the UE to have the configuration ready before initiating the random access process, thus reducing the time delay between measurement completion and connection establishment.
2Extent of automation
If the UE waits for MN to initiate SN adding process, then the network controls the process, but the data transmission delay increases and dual connection probability decreases
Solution Approach 1:
The patent introduces dynamic initiation where the UE can proactively initiate the random access process to the SN based on its own measurement results and connectivity conditions, rather than passively waiting for MN initiation. This dynamic approach allows the UE to seize connection opportunities timely, improving data transmission efficiency while maintaining network coordination through the MN.
Data Source
AI summary
The present application relates to the technical field of wireless communications, and disclosed are a dual/multi-connectivity-based secondary node (SN) addition/replacement method and device, for use in solving problems that in a dual/multi-connectivity scenario of a wireless communication, a process of adding or modifying an SN takes a long time and causes data transmission delay, and the probability of using dual-connectivity to transmit data is reduced because the establishment time of dual/multi-connectivity is too long. The method in the present application comprises: a user equipment receives configuration information of one/more SNs sent by a master node (MN); performing measurement assessment on the one/more SNs according to the configuration information of the one/more SNs to determining an SN satisfying a connectivity condition; and initiating a random access process to the SN satisfying the connectivity condition.