Dynamic Dual Connectivity Control for Cellular Networks
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Solution Overview
Problem
In cellular networks supporting dual connectivity modes like EN-DC, user equipment without dynamic power sharing capabilities face limitations in output power, leading to restricted uplink coverage and potential service interruptions, especially when the sum of LTE and 5G transmission powers exceed a certain power class, forcing network operators to restrict operations or deactivate one band to maintain service reliability.
Innovation Solution
A system that dynamically controls dual connectivity mode based on the probability of service interruptions in the first band, allowing user equipment to maintain or establish connections over the second band if the risk of interruption is low, thereby reducing unnecessary deactivation and reactivation of dual connectivity, conserving network resources and improving user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If user equipment without dynamic power sharing capabilities transmits over both LTE and 5G bands simultaneously, then dual connectivity is achieved, but the sum of output powers exceeds the power class limit, causing service interruptions or coverage restrictions
Solution Approach 1:
The system dynamically switches between dual connectivity mode and single connectivity mode based on power class constraints. When the sum of LTE and 5G output powers exceeds the power class limit, the system transitions from simultaneous transmission to time-division multiplexed transmission, ensuring reliable service while maintaining adaptability to different power conditions
Solution Approach 2:
The system changes the transmission parameter by switching between two operational modes: full dual connectivity mode when power constraints are satisfied, and time-division multiplexed mode when power constraints are violated. This parameter switching resolves the contradiction between achieving dual connectivity and maintaining service reliability under power limits
2Reliability
If network operators restrict user equipment to single uplink operation mode by disabling one band, then service reliability is maintained, but uplink coverage is limited and dual connectivity benefits are lost
Solution Approach 1:
Instead of statically disabling one band, the system dynamically activates or deactivates 5G uplink based on real-time power class conditions. When power constraints allow, both LTE and 5G bands are active simultaneously; when constraints are violated, the system switches to LTE-only mode temporarily, then reactivates 5G when conditions permit, thereby maintaining both reliability and coverage
3Productivity
If user equipment operates at cell center or in coverage-limited areas with dynamic power sharing, then performance is maintained, but Type 2 user equipment without dynamic power sharing cannot achieve the same performance levels
Solution Approach 1:
The system introduces time-division multiplexing as an intermediary mechanism for Type 2 user equipment to achieve power sharing between LTE and 5G bands. By alternating transmission between bands in time slots, the system enables Type 2 devices to achieve performance comparable to Type 1 devices with dynamic power sharing, compensating for the lack of native power sharing capability
Data Source
AI summary
Aspects of the subject disclosure may include, for example, obtaining data relating to a user equipment, where the user equipment is communicatively coupled to a first network node, and where the first network node employs a first radio access technology, determining whether there is an initiation of a call session for the user equipment to be facilitated by the first network node, determining, according to the data relating to the user equipment and responsive to determining that there is an initiation of a call session, a probability that the call session will become disconnected, and controlling connectivity between the user equipment and a second network node based on the probability that the call session will become disconnected, wherein the second network node employs a second radio access technology. Other embodiments are disclosed.