Relay Gateway Signaling Proxy for LTE Network Efficiency
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Solution Overview
Problem
Current LTE network gateways are inefficient in handling network signaling for multiple wireless relays, especially when these relays are linked in series, leading to suboptimal performance and reduced effectiveness in data communication networks.
Innovation Solution
The implementation of a Relay Gateway (R-GW) system that proxies network signaling for wireless relay systems, using Proxy Mobile Internet Protocol (PMIP) Generic Routing Encapsulation (GRE) tunnels and SGi tunnels between Local Serving Gateways (L-SGWs) and macro Packet Data Network Gateways (P-GWs), to enhance signaling exchange and management across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional data gateways (P-GW, S-GW, Se-GW) are used to handle network signaling for multiple wireless relays, then basic data communication functionality is maintained, but signaling handling efficiency deteriorates and system complexity increases
Solution Approach 1:
The patent segments the gateway functionality by introducing a dedicated Relay Signaling Gateway (R-SGW) that handles exclusively relay signaling, separating it from traditional P-GW, S-GW, and Se-GW functions. This segmentation allows each gateway component to specialize in specific tasks, improving overall signaling handling efficiency while distributing system complexity across multiple focused components rather than overloading traditional gateways with diverse relay signaling responsibilities.
Solution Approach 2:
The R-SGW acts as an intermediary component between wireless relays and the core network, specifically positioned to handle relay signaling before it reaches traditional gateways. This intermediary role filters and manages relay signaling traffic, preventing unnecessary signaling overhead from reaching P-GW and S-GW, thereby improving efficiency without requiring fundamental changes to existing gateway architectures.
2Area of stationary object
If multiple wireless relays are linked in series to extend coverage, then network coverage area is improved, but signaling management effectiveness deteriorates
Solution Approach 1:
The R-SGW provides universal signaling management capabilities that work consistently across single relay configurations and multi-relay series configurations. It handles various LTE signaling types (S1-MME, S1-U, S11, S5, S15, Gz/Gy, X2) uniformly regardless of how many relays are in the chain, ensuring reliable signaling management effectiveness while supporting coverage extension through series relay linking.
3Adaptability or versatility
If femtocell and picocell relays exchange user data and signaling over the Internet, then network flexibility is improved, but performance and effectiveness deteriorate
Solution Approach 1:
The R-SGW serves as an intermediary that optimizes the data path between relays and the core network. It establishes efficient signaling and data exchange mechanisms that reduce reliance on direct Internet routing, thereby improving data communication performance while preserving the flexibility of over-the-Top (OTT) data exchange capabilities through proper signaling management.
Data Source
AI summary
A wireless data communication network controls wireless network relays. The wireless network relays wirelessly exchange user data with user communication devices responsive to network signaling. The wireless network relays wirelessly exchange the user data and the network signaling with wireless access points. The wireless access points exchange the user data with data gateways. The wireless access points exchange the network signaling with a relay signaling gateway. The relay signaling gateway exchanges the network signaling with a Mobility Management Entity (MME). The MME control the wireless network relays over the network signaling.