NSA RAN Connection Switching After 5G Communication Failures
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Solution Overview
Problem
High-power consumption and unreliable communication issues with 5G RANs in user equipment (UE) due to obstructed or rapid movement conditions, leading to increased power consumption without significant bandwidth benefits.
Innovation Solution
UE selectively disconnects from a 5G RAN when a threshold number of communication failures is reached, switching to a 4G RAN to maintain communication bandwidth while reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 5G RAN connections are used to provide improved bandwidth, then network bandwidth is enhanced, but power consumption increases and communication reliability deteriorates under obstructed or rapid movement conditions
Solution Approach 1:
The system dynamically adjusts the RAN connection configuration based on real-time monitoring of communication failures. When failure thresholds are exceeded, the UE transitions from 5G to 4G RAN connections, and can further fallback to WiFi. This dynamic adaptation allows the system to optimize power consumption while maintaining bandwidth utilization under varying channel conditions.
Solution Approach 2:
The invention changes the operational parameters of the RAN connection by monitoring communication failure rates and adjusting the connection state accordingly. When failure rates exceed thresholds, the system modifies the connection parameters by switching to alternative RAN types (4G or WiFi), thereby reducing power consumption while preserving network bandwidth benefits when conditions permit.
2Productivity
If 5G RAN connections are used to provide improved bandwidth, then network bandwidth is enhanced, but communication reliability deteriorates under obstructed or rapid movement conditions
Solution Approach 1:
The system introduces an intermediary monitoring mechanism that tracks communication failures between the UE and RAN. This intermediary layer detects when 5G connections become unreliable due to obstructions or rapid movement, and triggers a transition to 4G or WiFi connections, thereby maintaining communication reliability while preserving bandwidth benefits when possible.
Solution Approach 2:
The system dynamically switches between different RAN connection types (5G, 4G, WiFi) based on real-time communication reliability assessment. This dynamic behavior ensures that the UE maintains the most reliable connection available while still utilizing higher bandwidth options when channel conditions permit.
3Reliability
If multiple RAN connections are monitored for communication failures, then connection reliability is improved, but device complexity increases
Solution Approach 1:
The monitoring function is segmented into separate failure counters for different RAN types (5G, 4G, WiFi). Each counter independently tracks failures for its specific RAN type, allowing the system to manage complexity through modular organization while maintaining comprehensive monitoring across multiple connections.
Solution Approach 2:
The system changes the monitoring parameters by establishing separate failure thresholds for different RAN types. This parameter differentiation allows the UE to monitor multiple connections effectively while managing complexity through structured threshold-based decision-making for each connection type.
Data Source
AI summary
A user equipment (UE) reduces power consumption by selectively disconnecting from a radio access network (RAN) while in a non-standalone (NSA) mode in response to detecting a threshold number of communication failures associated with the RAN. The UE connects to a core network in the NSA mode via both a 4G RAN and a 5G RAN. The UE monitors the connection with the 5G RAN for communication failures, such as Random Access Channel (RACH) failures, radio link failures (RLFs), and the like. In response to the number of detected failures exceeding a threshold, the UE can determine that the quality of the connection with the 5G RAN is providing relatively little benefit and can terminate the connection with the 5G RAN.