Wireless Communication Device UE Context Management
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Solution Overview
Problem
The existing UE context management method in wireless communication systems leads to communication delays and increased processing load due to the need for searching and transferring UE context when a terminal device moves across base station devices or higher-level devices, resulting in low adaptability to various situations.
Innovation Solution
A wireless communication device and system that generates and notifies identification information for UE context, allowing multiple base station devices to hold and manage UE contexts for a single terminal device, eliminating the need for context transfer by using Inactive-Radio Network Temporary Identifier (I-RNTI) for simultaneous identification, thereby improving adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE context is transferred when terminal device moves across base station devices, then the base station device can acquire necessary context information, but communication delays and processing load increase
Solution Approach 1:
The patent applies preliminary action by having the source base station device generate and notify the UE context (including I-RNTI) to the terminal device before the terminal device actually needs to reconnect. This is achieved through the RRC Release procedure where the source base station proactively provides the UE context to the terminal device, so that when the terminal device reconnects to a destination base station, the context is already available and no transfer delay occurs.
2Reliability
If UE context is transferred when terminal device moves across base station devices, then context information can be updated, but processing load increases
Solution Approach 1:
The patent extracts the essential UE context information (I-RNTI, AS identity, RAN parameters) from the full context transfer process and notifies only these critical elements to the terminal device during RRC release. This extraction approach maintains the necessary context accuracy for reliable reconnection while significantly reducing the processing load by avoiding complete context transfers between base stations.
3Speed
If UE context is held in base station device during RRC inactive mode, then quick transition to RRC connected mode is achieved, but adaptability to terminal device movement is reduced
Solution Approach 1:
The patent applies dynamics by making the UE context management flexible and adaptive. Instead of statically holding context only in the source base station, the system dynamically updates the terminal device with the UE context (including I-RNTI) during RRC release, allowing the terminal to independently manage its context across different base stations. This dynamic approach maintains quick transition capability while improving adaptability to terminal device movement.
Data Source
AI summary
A wireless communication device includes processor circuitry configured to perform to control, when establishing communication with another wireless communication device in a non-communication mode, to generate first identification information included in identification information that is able to simultaneously identify the wireless communication device itself and the other wireless communication device, regardless of whether the other wireless communication device holds second identification information included in the identification information, and to notify the generated first identification information to the other wireless communication device.