Tunnel Endpoint for RAN Paging Failure Recovery
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Solution Overview
Problem
Current radio access network architectures face challenges in efficiently managing radio resources and providing seamless connectivity in multicarrier communication systems, particularly in handling diverse transmission requirements and radio conditions across different carriers.
Innovation Solution
The implementation of a next-generation Node B (gNB) and evolved Node B (ng-eNB) with advanced functionalities such as radio resource management, scheduling, and dual connectivity, utilizing advanced modulation schemes like QAM and hybrid transmission mechanisms, along with dynamic adjustment of modulation and coding schemes based on transmission requirements and radio conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network sends paging messages to all base stations in a tracking area, then the user can be reached reliably, but the signaling overhead and network resources are wasted when the user is actually reachable via a alternative access method
Solution Approach 1:
The network performs preliminary actions by sending a first paging message through the alternative access network (non-3GPP) before sending traditional 3GPP paging messages. This preliminary notification allows the UE to prepare for incoming data, enabling the network to skip or reduce traditional paging transmissions and avoid unnecessary signaling overhead while maintaining reliable user reachability
Solution Approach 2:
The patent introduces an intermediary mechanism - a notification message sent through the alternative access network that acts as a mediator between the core network and the UE. This intermediary notification enables the UE to be alerted of incoming data through a different path, allowing the network to optimize traditional paging procedures and reduce overall signaling overhead
2Reliability
If the network uses traditional paging procedures, then user notification is reliable, but the latency is increased due to sequential paging attempts across multiple base stations
Solution Approach 1:
The notification message is sent in advance through the alternative access network before the UE would otherwise need to be paged through traditional procedures. This preliminary action allows the UE to be prepared for incoming data earlier, reducing the overall time required for successful data delivery while maintaining reliable notification through multiple pathways
Solution Approach 2:
The patent establishes continuous monitoring at the UE side for notification messages from the alternative access network, allowing the UE to immediately respond when notified of incoming data. This continuous action eliminates gaps in the paging process and reduces latency by enabling parallel operation of alternative and traditional access methods
3Reliability
If the network supports multiple access types, then connectivity robustness is improved, but the system complexity increases due to additional management requirements
Solution Approach 1:
The patent implements a universal notification mechanism that works across both 3GPP and non-3GPP access networks through a standardized interface. The same notification message structure and processing logic are used regardless of the access type, allowing the network to support multiple access types with a single unified management approach rather than separate complex systems for each access type
Solution Approach 2:
The network dynamically adjusts paging parameters such as the paging cycle and notification message content based on the UE's current access type and service requirements. By changing these parameters adaptively, the network optimizes performance for each access type without requiring fundamentally different management systems, thus reducing overall complexity while maintaining connectivity robustness
Data Source
AI summary
A first base station receives, from a first core network entity, one or more packets for a wireless device in a radio resource control inactive state. The first base station sends, to a second core network entity and in response to a failure of a radio access network (RAN) paging procedure for the wireless device, a first message indicating the failure of the RAN paging procedure. The first base station receives a second message comprising a tunnel endpoint identifier of a third base station. The first base station sends, to the third base station, the one or more packets based on the tunnel endpoint identifier.