SGW-U Resource Assignment via Terminal Location in 5G GTP
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Solution Overview
Problem
In the transition to 5G communication systems, existing technologies face challenges in efficiently assigning IP addresses and Tunnel Endpoint Identifiers (TEIDs) for GTP entities, particularly in managing the separation of control and user planes, which affects data traffic management and bandwidth allocation.
Innovation Solution
The proposed solution involves a method where the Mobility Management Entity (MME) selects a serving-gateway user-plane function (SGW-U) based on the location of a terminal, allocates IP addresses, and assigns TEIDs, enabling efficient resource management and allocation between the control and user planes within the GTP entities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If IP address and TEID allocation is centralized in SGW-C, then control plane management is simplified, but user plane resource allocation efficiency deteriorates
Solution Approach 1:
The patent divides the SGW function into separate control plane (SGW-C) and user plane (SGW-U) components. The SGW-C handles IP address allocation and TEID assignment, while the SGW-U handles actual data traffic routing. This segmentation allows each component to specialize in its function, improving overall system efficiency and manageability.
Solution Approach 2:
The patent introduces a resource allocation mechanism where SGW-C acts as an intermediary between the MME and SGW-U. SGW-C receives resource requests from MME, selects appropriate SGW-U instances, allocates IP addresses and TEIDs, and then configures the selected SGW-U for data traffic handling. This intermediary role enables coordinated resource allocation across the distributed architecture.
2Quantity of substance
If multiple SGW-Us are deployed for load balancing, then bandwidth utilization is improved, but resource assignment complexity increases
Solution Approach 1:
The patent implements dynamic resource allocation where SGW-C can dynamically select which SGW-U instance to activate based on current network conditions, terminal location, and load distribution. This dynamic approach allows the system to optimize resource utilization in real-time without requiring complex static configuration of multiple SGW-U instances.
Solution Approach 2:
The patent uses parameter-based selection criteria for SGW-U instantiation, including terminal location information, load balancing metrics, and network conditions. By changing these parameters dynamically, the system can efficiently allocate resources across multiple SGW-U instances without increasing operational complexity.
3Productivity
If SGW-U is selected based on terminal location, then data traffic management is optimized, but mobility event handling complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple SGW-U instances with their respective service areas and resource allocations before terminal mobility events occur. When a terminal moves, the system can quickly select the appropriate pre-configured SGW-U based on location information without requiring complex real-time configuration or reconfiguration of the entire gateway path.
Data Source
AI summary
A wireless cellular network system comprising MME configured to send a first create session request to SGW-C, the SGW-C configured to select SGW-U and transmit a first resource request to the selected SGW-U, and the SGW-U configured to, upon a receipt of the first resource request, allocate an IP address and TEIDs of the SGW-U, and transmit a resource message including the IP address and the TEIDs of the SGW-U to SGW-C. A method of SGW-C in a wireless communication system, the method comprising receiving, from MME, a first create session request, selecting SGW-U among a plurality of SGW-Us, wherein the selection is based on a location of a terminal, transmitting a first resource request to the selected SGW-U, receiving, from the selected SGW-U, a resource message including an IP address and TEID of the SGW-U, the IP address and TEIDs being allocated by the selected SGW-U.