Non-Geostationary RRC Suspension and Context Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems face challenges in managing radio resource control connections for non-geostationary access nodes, particularly in scenarios where service connectivity is temporarily unavailable, leading to inefficiencies and disruptions in user equipment communication.
Innovation Solution
The apparatus and methods facilitate the suspension and resumption of radio resource control connections by determining service unavailability and transferring user contexts to proxy nodes, enabling seamless handover between non-geostationary access nodes using user equipment trajectories, ephemeris, and traffic patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radio resource control connection is suspended due to service unavailability, then communication disruptions are reduced, but connection continuity deteriorates
Solution Approach 1:
The system performs preliminary actions by suspending the radio resource control connection before service unavailability occurs, based on predicted trajectories and ephemeris data. This proactive suspension prevents communication disruptions while the user equipment moves out of coverage area, thereby maintaining connection continuity through planned handover to proxy nodes.
Solution Approach 2:
Proxy nodes are introduced as intermediary entities that receive and store user context information when the non-geostationary access node becomes unavailable. These proxy nodes act as mediators to maintain connection continuity by holding the user context until the user equipment re-enters coverage or handovers to another access node, thus resolving the contradiction between suspension and continuity.
2Productivity
If user context is transferred to proxy nodes, then system efficiency is improved, but device complexity increases
Solution Approach 1:
The network functionality is segmented by introducing proxy nodes that specifically handle user context storage and management. This segmentation separates the core network functions from the access node functions, allowing the access node to focus on radio resource control while proxy nodes manage context information, thereby improving system efficiency without significantly increasing overall network complexity.
Solution Approach 2:
The system creates copies of user context information and stores them in proxy nodes rather than maintaining single-point storage at the access node. This copying mechanism enables efficient context retrieval during handover scenarios, improving system efficiency by eliminating repeated context establishment while the distributed storage architecture manages complexity through standardized interfaces.
3Duration of action of stationary object
If service connectivity is maintained during unavailability periods, then connection continuity is improved, but energy consumption increases
Solution Approach 1:
The system implements periodic connection suspension and resumption based on predicted service availability windows derived from trajectories and ephemeris data. Instead of maintaining continuous connectivity during unavailability periods, the connection is periodically suspended when service is unavailable and resumed when service becomes available, reducing energy consumption while maintaining connection continuity through planned reconnections.
Data Source
AI summary
There is provided a method, computer program and apparatus for causing a non-geostationary first access node to: determine to suspend a radio resource control connection between the non-geostationary first access node and a user equipment, wherein the radio resource control connection is defined by a user context; and provide the user context to a first proxy node with an indication that the user context is to be stored for retrieval by a non-geostationary second access node.