Access Network Device IP Allocation for Low Latency
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Solution Overview
Problem
Current wireless communications networks face issues with large data transmission delays and a high risk of network paralysis due to bottlenecks in the SGW-to-PDN-GW link and hierarchical architecture, which cannot meet the requirements of high bandwidth and low latency.
Innovation Solution
The solution involves allocating an IP address by an access network device to user equipment (UE), which then notifies an application server to manage mobility and service quality, allowing the UE to access multiple networks and use multiple IP addresses for data transmission, thereby bypassing traditional network entities like PDN-GW and SGW, and employing Multipath Transmission Control Protocol (MPTCP) and fountain coding for efficient data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hierarchical network architecture with PDN-GW and SGW is used, then service quality and mobility management are ensured, but data transmission delay increases and network complexity increases
Solution Approach 1:
The patent extracts and removes the PDN-GW and SGW entities from the traditional hierarchical network architecture. By eliminating these intermediate network elements, data can be transmitted directly between the access network and the application server, thereby reducing transmission delay while maintaining service quality through alternative management mechanisms.
Solution Approach 2:
The patent segments the network functionality by separating mobility management and service quality assurance functions from the data transmission path. The access network device directly interacts with the application server to handle data transmission, while mobility management is handled through direct communication between UE and access network, effectively decoupling control plane and user plane functions.
2Reliability
If a hierarchical network architecture with multiple network entities is used, then mobility management and service continuity are ensured, but device complexity and network structure complexity increase
Solution Approach 1:
The patent removes the PDN-GW and SGW entities from the network architecture, significantly reducing the number of network elements and simplifying the overall network structure. This extraction eliminates the complexity associated with managing multiple hierarchical entities while preserving essential services through direct access network-application server communication.
Solution Approach 2:
The access network device assumes multiple functions that were previously distributed across separate entities. It handles both data transmission and mobility management tasks, consolidating network functions into a single entity and thereby reducing overall network complexity while maintaining service continuity.
3Quantity of substance
If data aggregation on SGW-to-PDN-GW link is used, then network resource consolidation is achieved, but the link becomes a bottleneck and processing capability is limited
Solution Approach 1:
The patent eliminates the SGW-to-PDN-GW link by removing these network entities. Data no longer aggregates on this specific link but instead flows directly from the access network to the application server, eliminating the bottleneck and enabling unlimited processing capability constrained only by available network resources.
Solution Approach 2:
The patent changes the data transmission dimension by bypassing the traditional vertical hierarchical path through PDN-GW and SGW. Data transmission occurs through a direct horizontal path from access network to application server, effectively adding a new transmission dimension that avoids the bottlenecked link entirely.
4Device complexity
If a traditional network path through PDN-GW and SGW is used, then network management and control are simplified, but the risk of network paralysis from single point of failure increases
Solution Approach 1:
The patent removes the PDN-GW and SGW entities that represent single points of failure in the traditional architecture. By eliminating these centralized gateways, the network becomes more distributed and resilient, as failures in one access network device no longer cause cascading failures through the hierarchical structure.
Solution Approach 2:
The patent segments the network into independent access network devices that communicate directly with the application server, eliminating the centralized control through PDN-GW. This segmentation creates isolated failure domains where a single device failure cannot paralyze the entire network, thereby improving reliability while maintaining manageable complexity through standardized interfaces.
Data Source
AI summary
A communication method, user equipment, an access network device, and an application server. The method is: allocating, by the access network device, an IP address to the UE; and after the UE notifies the IP address to the application server, performing, by the application server, a data transmission service for the UE by using the IP address. By using the technical solutions of the present invention, a PDN-GW, an SGW, a PCRF entity, an MME, and an HSS in an existing wireless communications network are deleted, and functions of the foregoing network side devices are implemented by using the access network device and the application server. Therefore, it is avoided that an SGW-to-PDN-GW link becomes a bottleneck of a processing capability of the wireless communications network, network layers are greatly reduced, a data transmission delay is effectively reduced, and a network paralysis risk is reduced.