PDN Connection Group Segmentation for MTC Congestion Control
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Solution Overview
Problem
In wireless communication systems, existing technologies face inefficiencies in managing Machine Type Communications (MTC) device connections, particularly in handling group-specific congestion control, where a UE belonging to multiple groups may have its access to all services blocked due to issues in one service group, leading to unnecessary service denial for non-affected groups.
Innovation Solution
A method for performing PDN connection procedures in wireless communication systems, where a UE and MME exchange information on blocked and non-blocked groups, allowing the UE to reattempt connections to non-blocked groups if initially rejected, and enabling dynamic service group changes based on network congestion and subscriber information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If group-specific congestion control is applied to block access for UEs in blocked groups, then network congestion is reduced, but UEs belonging to multiple groups may have their access to all services blocked due to issues in one service group
Solution Approach 1:
The patent segments the service groups into blocked and non-blocked groups, and further segments the UE's service access rights based on this segmentation. The UE is allowed to access services in non-blocked groups even if it belongs to blocked groups, thereby resolving the contradiction between congestion control and service accessibility.
Solution Approach 2:
The patent applies local quality by differentiating the access rights for different service groups. Blocked groups have restricted access, while non-blocked groups maintain normal access. This localized differentiation ensures that congestion control measures do not unnecessarily affect all services for a UE, only the specific blocked services.
2Loss of energy
If a UE is blocked from accessing services due to group congestion, then network resources are protected, but the UE cannot access available services in non-blocked groups
Solution Approach 1:
The patent segments service access rights based on group status. The UE's access capability is segmented such that it can access non-blocked groups while being blocked from blocked groups. This segmentation resolves the contradiction by allowing selective service access rather than complete blockage.
Solution Approach 2:
The patent applies partial action by blocking only the necessary service access (blocked groups) while allowing access to non-blocked groups. This partial blocking approach protects network resources without unnecessarily restricting the UE's overall service access capability.
3Device complexity
If the network blocks all services for a UE based on group status, then congestion control is simplified, but service diversity and flexibility are reduced
Solution Approach 1:
The patent segments the congestion control mechanism into group-level blocking decisions rather than UE-level complete blockage. This segmentation maintains relative simplicity in the control mechanism while significantly improving service group flexibility and adaptability.
Solution Approach 2:
The patent introduces dynamic service access control where the UE's access rights are dynamically adjusted based on real-time group status information. The network can dynamically determine which groups are blocked and which are open, providing flexibility without excessive complexity.
Data Source
AI summary
Disclosed is a method for performing a packet data network (PDN) connection process by a user equipment in a wireless communication system, the method comprising the steps of: transmitting a first PDN connection request to a mobility management entity (MME); and receiving from the MME a response to the first PDN connection request, wherein the first PDN connection request comprises information about groups, and the response to the first PDN connection request comprises information about blocked groups among a plurality of groups and/or unblocked groups among the plurality of groups.