Base Station Optimization Servers for Wireless Backhaul Efficiency
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Solution Overview
Problem
Current LTE wireless networks face challenges in meeting bandwidth demands due to inter-cell interference, backhaul network utilization, and latency issues, particularly in delivering high-bandwidth services like video streaming, which affects user experience and network capacity.
Innovation Solution
The implementation of a distributed publish/subscribe broker communications architecture within the LTE network, along with optimization servers and bearer redirection, allows for efficient delivery of streaming services by minimizing backhaul network usage and optimizing packet paths, enabling simultaneous service delivery to multiple users without incurring high backhaul costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If video streaming services are delivered to multiple users through external servers located at great distances, then service coverage is provided, but long packet transit delays (latency) occur resulting in poor user experience
Solution Approach 1:
The patent introduces a new spatial dimension for server deployment by placing optimization servers within the wireless network infrastructure (at base stations or regional centers) rather than relying solely on distant external servers. This dimensional shift from external to internal network placement reduces the physical distance packets must travel, thereby reducing latency while maintaining service coverage.
Solution Approach 2:
The optimization server acts as an intermediary between external content sources and user equipment. It receives content from external servers, processes and caches it locally within the network, and delivers it to users. This intermediary position eliminates the need for packets to traverse the entire external network path, reducing transit delay while maintaining service availability.
2Ease of manufacture
If servers are deployed externally to the wireless network at great distances, then service provision is simplified, but long packet transit delays occur between the service program and the user access point
Solution Approach 1:
The patent segments the service delivery function into two parts: external servers that provide content sources and internal optimization servers that handle real-time packet routing and delivery. This segmentation allows external servers to remain simple content repositories while optimization servers within the network handle the time-critical packet forwarding, thus maintaining deployment simplicity while reducing latency.
Solution Approach 2:
The solution adds an internal network dimension for packet routing alongside the external server dimension. Packets can be routed through the internal network infrastructure (via optimization servers at base stations or regional centers) rather than exclusively through external networks, creating a shorter path and reducing transit delay while keeping the overall system architecture relatively simple.
3Quantity of substance
If backhaul facilities operate at moderate capacity (1 Gbps), then deployment cost is reduced, but bandwidth demands for video applications are not met when multiple users access content simultaneously
Solution Approach 1:
The optimization server performs preliminary actions by caching and pre-processing video content locally within the network before it is requested by users. When multiple users request the same content, the pre-cached copies are available locally, eliminating the need for repeated backhaul transmissions and thus meeting multiple user demands without requiring increased backhaul capacity.
Solution Approach 2:
The system creates local copies of popular video content at optimization servers within the network. Instead of transmitting the same content multiple times over the backhaul for different users, the optimization server maintains local copies that can be served simultaneously to multiple users, thereby maintaining service delivery efficiency with limited backhaul bandwidth.
4Area of stationary object
If LTE base stations are deployed to provide wireless service, then network coverage is improved, but inter-cell interference from overlapping RF signals reduces data rates for users located at cell boundaries
Solution Approach 1:
The optimization server acts as an intermediary that receives packets from multiple base stations and intelligently routes them to the appropriate user equipment. For users at cell boundaries experiencing interference, the optimization server can select the best transmitting base station or combine signals from multiple base stations, thereby maintaining high data rates despite the overlapping RF signals required for extended coverage.
Data Source
AI summary
In embodiments of the present disclosure, improved capabilities are described for conserving back haul utilization in a wireless network, where base station optimization servers are provided within the wireless network to provide streaming data services required for applications streaming data to a plurality of mobile cellular devices, such as where a base station optimization server is connected to first and second mobile transceiver devices via redirected bearers such that the base station optimization server may route an application data packet stream, on behalf of an application that provides streaming application data, from the base station optimization server to each of first and the second mobile, where the application data packet stream is delivered to each of the plurality of mobile cellular devices at different times, and wherein use of the back haul network is minimized.