SGW PGW Co-location for Wireless Service Routing
Solution Overview
Problem
Current wireless communication networks experience delays and increased costs due to inefficient routing of data packets through multiple nodes for both data and voice services in mobile devices, as anchor Serving Gateways (SGWs) route traffic through separate Packet Data Network (PDN) gateways (PGWs).
Innovation Solution
Co-locating each Serving Gateway (SGW) with a corresponding Packet Data Network (PDN) gateway (PGW) in the same physical node to route wireless traffic directly, reducing the need for multiple nodes and optimizing routing for data and voice services separately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data packets are routed through multiple nodes (anchor SGW and separate PGW), then network coverage and service reliability are improved, but routing delays and network costs increase
Solution Approach 1:
The patent segments the gateway functions by separating data service handling (through SGW) from voice service handling (through dedicated PGW), allowing each to be optimized independently. This segmentation enables direct routing paths for different service types, reducing overall routing delays while maintaining reliability through specialized handling.
Solution Approach 2:
The patent introduces a dedicated voice service PGW as an intermediary node specifically for voice traffic, positioned between the SGW and the IMS network. This intermediary enables optimized voice service routing without affecting data service paths, reducing voice service delays while maintaining network reliability.
2Reliability
If data packets are routed through multiple nodes (anchor SGW and separate PGW), then network coverage and service reliability are improved, but network costs increase
Solution Approach 1:
The patent segments the gateway functions by separating data service handling (through SGW) from voice service handling (through dedicated PGW), allowing each to be optimized independently. This segmentation enables direct routing paths for different service types, reducing overall routing delays while maintaining reliability through specialized handling.
Solution Approach 2:
The patent creates a multi-functional gateway architecture where the SGW handles both data and voice service routing, while the dedicated PGW handles voice services. This universal design allows the system to maintain reliability through multiple functional nodes while optimizing cost efficiency by consolidating data service handling at the SGW level.
3Adaptability or versatility
If separate PGW nodes are used for voice and data services, then service specialization is improved, but device complexity and routing overhead increase
Solution Approach 1:
The patent segments the gateway functions by separating data service handling (through SGW) from voice service handling (through dedicated PGW), allowing each to be optimized independently. This segmentation enables direct routing paths for different service types, reducing overall routing delays while maintaining reliability through specialized handling.
Solution Approach 2:
The patent implements dynamic service routing where the network can selectively route data services through the SGW and voice services through the dedicated PGW based on service type. This dynamic approach allows service specialization without requiring complex static routing configurations, reducing routing overhead while maintaining adaptability.
Data Source
AI summary
A technique of associating each Serving Gateway (SGW) with a corresponding Packet Data Network (PDN) gateway (PGW) to provide a particular type of wireless service to mobile devices in the wireless communication network is discussed herein. In configurations, the technique includes co-locating a SGW with a corresponding PGW in the same, physical node of the wireless communication network to provide a first S/PGW pair. In configurations, the first co-located S/PGW pair may be dedicated to provide data services to mobile devices in the wireless communication network. The technique also includes co-locating another SGW with a corresponding PGW in the same, physical node of the wireless communication network that is different from the physical node that includes the first S/PGW pair to provide a second S/PGW pair. In configurations, the second co-located S/PGW pair may be dedicated to provide voice services to mobile devices in the wireless communication network.