Connection Release Service with Acknowledgment for UE State Management
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Solution Overview
Problem
User equipment (UE) may not receive radio resource control (RRC) connection release messages due to poor network performance, leading to unnecessary resource wastage as the UE attempts to use old connections, and there is no mechanism for the UE to notify the base station about the message receipt status.
Innovation Solution
Implementing a connection release service that encapsulates the RRC connection release message with a network-layer header, allowing the UE to acknowledge receipt of the state change to the base station, ensuring timely resource management and preventing resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station sends RRC connection release messages to notify UE of state changes, then the UE state management is improved, but the message may not be received due to poor network performance causing resource wastage
Solution Approach 1:
The patent implements an acknowledgment mechanism where the UE sends a confirmation message back to the base station after successfully receiving the RRC connection release message. This feedback loop ensures the base station knows whether the notification was successfully delivered, allowing it to avoid unnecessary retransmissions and resource allocation, thereby resolving the contradiction between reliable notification and resource efficiency.
Solution Approach 2:
The base station sends the RRC connection release message before the UE actually needs to transition states, ensuring the notification is delivered while network conditions are still acceptable. This preliminary action prevents the scenario where the UE would otherwise continue using old connections and waste resources, addressing the reliability-resource wastage contradiction.
2Productivity
If the base station reassigns resources after sending connection release message, then resource allocation efficiency is improved, but the UE may waste resources attempting to use old connections
Solution Approach 1:
The acknowledgment mechanism provides the base station with definitive information about whether the UE received the connection release message. With this feedback, the base station can make informed decisions about resource reassignment - only reassigning resources when the UE has successfully processed the release message, thus improving resource allocation efficiency while preventing the UE from wasting resources on old connections.
3Device complexity
If no acknowledgment mechanism is implemented, then the system complexity is reduced, but the base station cannot confirm message receipt status
Solution Approach 1:
The patent adds an acknowledgment message from UE to base station, which introduces some protocol complexity but provides crucial information about message receipt status. This feedback mechanism resolves the contradiction by ensuring the base station has complete information about whether the connection release message was successfully delivered, enabling proper resource management decisions.
Data Source
AI summary
A base station may cause a user equipment (UE) to be connected to a network, wherein an attach request message, that is used to connect the UE to the network, includes one or more eligibility parameters for a connection release service. The base station may determine, based on the one or more eligibility parameters, that the UE is to receive the connection release service. The base station may provide, to the UE, a connection release message that is provided based on determining that the UE is to receive the connection release service. The base station may receive, from the UE, a connection release acknowledgement message that indicates that the connection release message has been received by the UE. The base station may perform one or more actions associated with changing a state of the UE based on receiving the connection release acknowledgement message.