GBR Bearer Release via Paging Timeout in Mobile Core Networks
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Solution Overview
Problem
In mobile communication systems, when a fault occurs in a radio base station or radio network controller, it is challenging to disconnect a GBR bearer at an appropriate timing, leading to ongoing charges for services based on time charging, as existing systems fail to timely release the bearer in the core network.
Innovation Solution
A mobile communication method that involves detecting faults in radio base stations or network controllers, transmitting paging signals, and initiating procedures to release bearers when no response is received within a predetermined period, allowing for timely disconnection of GBR bearers and stopping charging processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobility management node holds the GBR bearer even when the paging timer expires, then the bearer availability is maintained, but the charging cannot be stopped and resources are wasted
Solution Approach 1:
The mobility management node performs preliminary actions by establishing alternative bearer paths before the paging timer expires. When downlink data notification is received and paging is sent, the node proactively sets up alternative bearers through other base stations or core network paths, so that when the timer expires, the bearer can be seamlessly switched without service interruption, while enabling proper charging termination for the failed path
Solution Approach 2:
The gateway device acts as an intermediary between the core network and the radio access network. It receives downlink data notifications, triggers paging procedures, and coordinates with the mobility management node to establish alternative bearers. This intermediary role allows the system to maintain bearer availability while enabling proper charging control by mediating the bearer management decisions
2Loss of energy
If the GBR bearer is released immediately when fault is detected, then charging can be stopped, but service continuity is interrupted
Solution Approach 1:
Before releasing the GBR bearer due to fault, the mobility management node performs preliminary actions by establishing alternative bearer paths. When fault is detected and downlink data notification is received, the node proactively sets up alternative bearers through other base stations or core network paths, ensuring service continuity is maintained while enabling proper charging termination
Solution Approach 2:
The system provides beforehand cushioning by preparing alternative bearer paths in advance before the fault becomes critical. When the paging timer is about to expire or fault is detected, the alternative bearers are already established and ready to take over, cushioning the impact of the fault and ensuring seamless service continuity while allowing charging to be stopped for the failed path
Data Source
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AI summary
A mobile communication method according to the present invention includes a step A of releasing, by a gateway device S-GW, a first GBR bearer for a mobile station UE and transmitting "Downlink Data Notification" to a packet exchanger SGSN if a fault of a radio network controller RNC is detected in the state in which a second GBR bearer for the mobile station UE is set, a step B of transmitting, by the packet exchanger SGSN, "Paging" to the mobile station UE, and a step C of starting, by the packet exchanger SGSN, a procedure for releasing the second GBR bearer when no response to the "Paging" is received from the mobile station UE in a predetermined period.