LTE Optimization Servers Reduce Latency and Backhaul Bandwidth
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Solution Overview
Problem
Current broadband wireless networks face challenges in meeting bandwidth demands due to limitations in air interface utilization, inter-cell interference, and backhaul network capacity, particularly in providing efficient data acquisition, processing, and distribution for government and emergency services.
Innovation Solution
Deployment of Optimization Servers within the LTE Wireless Network at PGW and eNB locations to reduce latency, increase bandwidth, and minimize backhaul network usage by transferring application functionality and service programs closer to mobile devices, using techniques such as bearer redirection and publish-subscribe communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If servers are deployed externally to the wireless network at great distances from user access points, then network architecture simplicity is maintained, but packet transit delays (latency) increase resulting in poor user experience
Solution Approach 1:
The patent segments the network architecture by deploying optimization servers at multiple strategic locations within the wireless network (PGW and eNB), creating a distributed server infrastructure that reduces packet transit delays while maintaining manageable complexity through modular deployment
Solution Approach 2:
The patent introduces a new spatial dimension to server deployment by placing optimization servers at eNB locations close to users, fundamentally changing the traditional centralized external server model into a multi-tier distributed architecture that reduces latency without proportionally increasing complexity
2Productivity
If multiple mobile devices request the same data through dedicated bearers, then individual device service requirements are met, but backhaul network bandwidth is over-utilized reducing capacity for other services
Solution Approach 1:
The patent merges multiple dedicated bearers into a single shared bearer at the PGW optimization server, allowing multiple mobile devices to share the same backhaul connection while maintaining individual service quality, thereby reducing overall backhaul bandwidth consumption without compromising productivity
Solution Approach 2:
The patent creates local copies of service data at eNB optimization servers, enabling mobile devices to access data from local copies rather than requiring continuous backhaul transmissions, thus reducing backhaul bandwidth consumption while maintaining efficient data distribution
3Ease of manufacture
If LTE Base Stations are connected to Enhanced Packet Core network through backhaul facilities operating at one Gbps, then network deployment cost is reduced, but moderate numbers of video application users can easily exhaust available backhaul bandwidth
Solution Approach 1:
The patent segments the backhaul traffic by implementing optimization servers at eNB locations that handle local data distribution, reducing the bandwidth burden on the one Gbps backhaul connection while maintaining ease of deployment with lower-cost infrastructure
Solution Approach 2:
The patent introduces optimization servers as intermediary components between the backhaul network and mobile devices, enabling efficient local data distribution that maximizes the utilization of limited backhaul bandwidth without requiring expensive high-capacity backhaul facilities
Data Source
AI summary
In embodiments of the present disclosure improved capabilities are described for increasing the bandwidth in a large area broadband LTE wireless network, where regional optimization servers are incorporated near the wireless network in association with the public data network gateway, thus reducing the time-latency for applications being run from a mobile cellular device. Further, by associating additional optimization servers at base stations, application functionality may be optionally transferred from the regional optimization server to the local base station optimization server in instances where a number of mobile cellular devices are requesting the same data via their access through the same cell, and in other instances, to the effect that back haul network bandwidth utilization is reduced or eliminated.