Bearer Deletion via Cancellation Type Indication Parameter
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bearer deletion methods are not applicable across different network types, leading to inefficient use of air interface resources and incorrect deletion of bearers, particularly when a user equipment (UE) moves between 2G/3G and SAE networks, resulting in duplicative registrations and resource wastage.
Innovation Solution
A method and system for bearer deletion that includes receiving a cancellation type indication parameter from a Home Subscriber Server (HSS) to distinguish between attach and update procedures, allowing for accurate deletion of bearers between intermediate network elements (NE), serving gateways (S-GW), and PDN gateways (P-GW), thereby preventing incorrect deletion and conserving network resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the existing bearer deletion method is applied in multi-network environments, then the bearer deletion process is simple within a single network, but the method becomes inapplicable across different network types leading to incorrect deletion and resource wastage
Solution Approach 1:
The patent introduces a cancellation type indication parameter that changes the state information sent from HSS to SGSN/MME. This parameter distinguishes between attach-type and update-type procedures, enabling the network element to correctly determine whether bearer deletion is needed. By changing the parameter state rather than the entire procedure, the system achieves both versatility across network types and accuracy in bearer deletion decisions.
2Adaptability or versatility
If the UE frequently registers with different network types, then the UE can maintain connectivity across networks, but significant air interface resources are wasted
Solution Approach 1:
The system performs preliminary action by setting the cancellation type indication parameter before the actual bearer deletion occurs. When the HSS sends this parameter to the SGSN/MME, the network element can proactively determine whether to delete bearers, preventing the need for frequent re-registrations and reducing air interface resource consumption before the problem arises.
3Productivity
If the SGSN/MME deletes bearers without checking the cancellation type, then the bearer deletion process is fast, but incorrect deletion occurs leading to service interruption
Solution Approach 1:
The cancellation type indication parameter acts as an intermediary that carries critical decision information from the HSS to the SGSN/MME. This intermediary parameter enables the network element to make accurate bearer deletion decisions without complex real-time negotiations, maintaining fast processing speed while ensuring service continuity through correct deletion decisions.
Data Source
AI summary
A method of bearer deletion is provided to improve the universality of the bearer deletion process. The method includes: receiving, by the original intermediate NE, the cancellation type indication parameter sent by the HSS, and deleting the bearer between the serving gateway (S-GW) and a packet data network gateway (P-GW), if the original intermediate network element obtains an attach type according to the cancellation type indication parameter indicating an attach type and a corresponding bearer exists on the original intermediate NE. This method helps efficiently improve the universality of the bearer deletion flow.