Wireless Device Dual Connectivity Cell Configuration
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Solution Overview
Problem
In dual connectivity scenarios, wireless devices face challenges in simultaneously transmitting Random Access (RA) to both primary and secondary cells, which can disrupt dual connectivity operations and procedures like handover and positioning measurements, as existing solutions lack a mechanism to address these issues effectively.
Innovation Solution
The wireless device and network node employ a method to configure the second serving cell using a configuration time delay that includes or excludes the time delay due to a second RA transmission, depending on whether the device is sending a RA transmission in the first serving cell, thereby optimizing power consumption and preventing disruptions to dual connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wireless device transmits Random Access to both primary and secondary cells simultaneously, then dual connectivity configuration can be performed, but power consumption increases and disruptions occur to ongoing procedures
Solution Approach 1:
The patent implements dynamic adaptability by allowing the wireless device to flexibly switch between two configuration methods (first method with RA delay inclusion and second method without) based on real-time transmission conditions. The device determines whether to include random access delay in the configuration time delay of the second serving cell depending on whether it needs to perform RA to the first serving cell, creating a dynamic adaptation mechanism that optimizes power consumption while maintaining dual connectivity functionality.
2Adaptability or versatility
If the wireless device transmits Random Access to both primary and secondary cells simultaneously, then dual connectivity configuration can be performed, but disruptions occur to handover and positioning measurements
Solution Approach 1:
The patent applies preliminary anti-action by proactively preventing disruptions to ongoing procedures through conditional configuration. Before configuring the second serving cell, the device checks whether it needs to perform random access to the first serving cell. If RA is needed, the device includes the RA delay in the configuration time delay, thereby preemptively avoiding conflicts with handover and positioning measurements. This preliminary protective measure ensures procedure continuity while enabling dual connectivity configuration.
3Productivity
If the configuration time delay excludes RA transmission delay, then configuration speed increases, but RA transmission to first serving cell is interrupted
Solution Approach 1:
The patent implements dynamic adaptability by allowing the wireless device to flexibly switch between two configuration methods (first method with RA delay inclusion and second method without) based on real-time transmission conditions. The device determines whether to include random access delay in the configuration time delay of the second serving cell depending on whether it needs to perform RA to the first serving cell, creating a dynamic adaptation mechanism that optimizes power consumption while maintaining dual connectivity functionality.
Data Source
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AI summary
A wireless device (120) and method for performing cell configuration. The wireless device and a first network node (111) serving the wireless device are operating in a wireless communications network (100), wherein the first network node manages a first serving cell (111a). When the wireless device is to send a second Random Access (RA) transmission in the first serving cell to the first network node while preparing to perform or performing configuration of a second serving cell managed by a second network node, the wireless device configures the second serving cell using a configuration time delay Tact_PSCell comprising at least a time delay TRA_PCell due to the second RA transmission, otherwise the wireless device configures the second serving cell using the configuration time delay Tact_PSCell excluding the time delay TRA_PCell due to the second RA transmission.