Radio Communication System State Transition Management
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Solution Overview
Problem
Current radio communication systems, particularly in the context of next-generation standards like 5G and LTE, lack a defined process for state transitions between the connected, sustained, and idle states, especially during inter-RAT transitions, which can lead to inefficiencies in resource allocation and user equipment mobility management.
Innovation Solution
A radio communication system with a user equipment that includes a state management unit and a state transition unit, capable of transitioning between connected, sustained, and idle states, and managing context identifiers and location registration areas across different radio access technologies, enabling efficient state transitions and resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the user equipment transitions to the sustained state (intermediate transition between connected and idle), then resource allocation efficiency is improved and mobility management is enhanced, but the specific process for state transition and inter-RAT transition is not defined
Solution Approach 1:
The patent segments the state management process into distinct components: state management unit for managing communication states, state transition unit for causing transitions, and context management unit for handling radio parameter information. This segmentation provides clear definitions for state transitions while maintaining efficiency benefits.
Solution Approach 2:
The patent applies preliminary action by having the state management unit extract and retain context identifiers and base station-based location registration areas before state transitions occur. This preparation enables seamless transitions between sustained, connected, and idle states without losing critical communication parameters.
2Loss of time
If the user equipment maintains connected state between core network and base station during sustained state, then communication resumption is rapid, but individual resource allocation is unable to be performed
Solution Approach 1:
The patent implements dynamics by allowing the system to flexibly switch between sustained state (fast resumption, no individual resource allocation) and connected state (slower resumption, full resource allocation) based on communication needs. The state transition unit enables dynamic adjustment of the connection level between user equipment and base station.
Solution Approach 2:
The patent changes the parameter of connection level by introducing the sustained state as an intermediate level between fully connected and idle states. The context management unit retains radio parameter information (AS context) to enable rapid parameter restoration when transitioning from sustained to connected state.
3Adaptability or versatility
If the user equipment transitions between LTE and NR systems through inter-RAT transition, then system versatility is improved, but the transition process is not defined
Solution Approach 1:
The patent applies universality by designing the state management unit to handle multiple radio access technologies (LTE and NR) through a unified state management framework. The same state management, transition, and context retention mechanisms work across different RATs, enabling versatile inter-RAT transitions without requiring separate process definitions.
Data Source
AI summary
Provided is a radio communication system capable of implementing a state transition related to an intermediate transition between a connected state and an idle state.An aspect of the present invention relates to a radio communication system, including: a user equipment, wherein the user equipment includes a state management unit that manages a communication state of the user equipment, and a state transition unit that causes the communication state of the user equipment to transition, and when a sustenance message for causing the user equipment to transition from a connected state to a sustained state is received from a first base station, the state transition unit causes the user equipment to transition from the connected state to the sustained state, and the state management unit extracts a context identifier specifying radio parameter information for radio communication between the user equipment and the first base station and a base station-based location registration area configured with one or more cells including a cell of the first base station from the sustenance message and retains the radio parameter information, the context identifier, and the base station-based location registration area.