Core Network Device Selection for MTC Grouping
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Solution Overview
Problem
In machine-to-machine (M2M) communication, a large number of MTC UEs accessing a mobile communication network occupy excessive network resources and generate significant signaling overhead, impacting the performance of both M2M and human-to-human communication.
Innovation Solution
An access network device determines the equipment type of a UE and, if it's an MTC UE, identifies its MTC group identifier to select a core network device from a pool, allowing multiple MTC UEs within the same group to share the same core network device, thereby optimizing resource allocation and reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each MTC UE is allocated dedicated bearer resources and establishes individual binding relationships in the core network, then each UE can access the network independently, but network resources are excessively occupied and signaling overhead increases
Solution Approach 1:
Multiple MTC UEs are merged into a single MTC group that shares common bearer resources and binds to a single core network device. The access network device creates one MTC group bearer instead of individual bearers for each UE, and establishes one binding relationship between the MTC group and the core network device, thereby reducing network resource consumption and signaling overhead while maintaining network access reliability.
Solution Approach 2:
The MTC group bearer serves multiple UEs simultaneously, providing universal access capability. A single bearer resource is designed to handle traffic from multiple UEs in the group, and a single core network device handles multiple MTC groups, demonstrating multi-functionality that reduces overall network resource requirements.
2Adaptability or versatility
If individual bearer resources are allocated to each MTC UE, then each UE has dedicated network access, but signaling overhead increases and impacts H2H communication
Solution Approach 1:
Multiple MTC UEs are merged into a single MTC group that shares common bearer resources and binds to a single core network device. The access network device creates one MTC group bearer instead of individual bearers for each UE, and establishes one binding relationship between the MTC group and the core network device, thereby reducing network resource consumption and signaling overhead while maintaining network access reliability.
3Productivity
If MTC UEs are distributed across multiple core network devices, then load is balanced, but more binding relationships must be established increasing signaling overhead
Solution Approach 1:
Multiple MTC UEs are merged into a single MTC group that shares common bearer resources and binds to a single core network device. The access network device creates one MTC group bearer instead of individual bearers for each UE, and establishes one binding relationship between the MTC group and the core network device, thereby reducing network resource consumption and signaling overhead while maintaining network access reliability.
Data Source
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AI summary
A method and a device for selecting a core network device. The method includes: an access network device determining the equipment type of a user equipment (UE); when the equipment type is a machine type communication (MTC) UE, the access network device determining an MTC group identifier corresponding to the UE; when the MTC group identifier corresponds to a core network device, the access network device selecting the core network device corresponding to the MTC group identifier as a core network device which the UE accesses. In the embodiments of the present application, a plurality of MTC UE corresponding to the same MTC group identifier can select the same core network device to access a mobile communication network, and thus being able to save network resources and reduce signaling overhead using a public bearer.