Home eNodeB Access Control via Bearer Update for Hybrid Cells
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Solution Overview
Problem
In mobile communication systems, particularly in 3GPP LTE/SAE networks, there is a challenge in efficiently managing handovers of terminals from one Closed Subscriber Group (CSG) to another, especially when the accessible time expires or permission is revoked, leading to inefficient use of wireless resources and increased signaling exchange, which can result in unnecessary handovers and resource wastage.
Innovation Solution
A method is introduced where a network entity recognizes the expiration of the access timer for a terminal's CSG membership, sends a bearer update request to change the membership, and transmits a bearer modify request to the Home(e)NodeB, minimizing signaling exchange and optimizing resource usage by updating the bearer with other network entities and the Home(e)NodeB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network allows terminal access to Home(e)NodeB through CSG membership with time limits, then access control and resource management are improved, but unnecessary handovers occur when timer expires, leading to increased signaling exchange and resource wastage
Solution Approach 1:
The network entity proactively manages the terminal's CSG membership by detecting timer expiration before it causes unnecessary handovers. The system performs preliminary actions to extend the access timer or renew CSG membership, preventing the terminal from losing access rights and avoiding subsequent handover operations that would waste wireless resources.
2Stability of the object's composition
If the network manages CSG membership expiration by allowing terminal to continue accessing Home(e)NodeB, then service continuity is maintained, but signaling exchange increases and wireless resources are wasted
Solution Approach 1:
The network entity continuously monitors the access timer status and provides feedback to manage CSG membership. When the timer approaches expiration, the system sends feedback signals to extend the access period or renew membership, thereby maintaining service continuity while controlling signaling exchange to prevent resource wastage.
3Productivity
If the network entity extends access timer or renews CSG membership proactively, then unnecessary handovers are reduced, but network control complexity increases
Solution Approach 1:
The network entity autonomously manages CSG membership expiration by detecting timer status and automatically extending access or renewing membership without requiring terminal intervention. This self-service approach reduces unnecessary handovers and improves wireless resource efficiency while the complexity is contained within the network entity's control functions.
Data Source
AI summary
A method for receiving information of a user equipment (UE) by an eNodeB is discussed. The method according to one embodiment includes receiving, by the eNodeB from a mobility management entity (MME), a request message including QoS-related information and an indication of whether the UE is a closed subscriber group (CSG) member; updating, by the eNodeB, context of the UE according to the request message, when the UE is connected to a cell in associated with the eNodeB, the cell is operating in a hybrid access mode, and the CSG membership to the cell has expired; and transmitting, to the MME, a message indicating that the context of the UE has changed.