Packet Header Suppression for Streaming Media Bandwidth Reduction
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Solution Overview
Problem
Conventional methods for providing streaming media content over cellular wireless networks consume excessive bandwidth by backhauling content from remote sources through the wireless service provider's network.
Innovation Solution
Implementing a local source of streaming media content at the base station, which continually transmits packets to the base station via a local connection, allowing the base station to wirelessly transmit selected content to subscriber stations without using the remote network's bandwidth, and using packet header suppression to ensure proper processing by the subscriber stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If streaming media content is transmitted through the cellular wireless network from remote content servers, then the content can be delivered to mobile devices using existing network infrastructure, but excessive bandwidth is consumed by backhauling content through the wireless service provider's network
Solution Approach 1:
The patent introduces a local content source as an intermediary component at the base station that receives content via a local connection (bypassing the remote network) and delivers it locally to subscriber stations. This mediator eliminates the need to backhaul content through the wireless service provider's network, reducing bandwidth consumption while maintaining content delivery capability
Solution Approach 2:
The patent segments the content delivery path into two separate pathways: a local connection for content input to the base station and a wireless connection for content delivery to subscriber stations. This segmentation allows the content to bypass the remote network infrastructure and be delivered efficiently through the local wireless network
2Reliability
If packet headers are fully transmitted to subscriber stations, then proper packet processing and routing can be ensured, but increased overhead reduces transmission efficiency and consumes more bandwidth
Solution Approach 1:
The patent extracts and removes redundant packet header information from the transmitted data packets, keeping only the essential payload content. By taking out the unnecessary header overhead and transmitting only the critical data, the system reduces bandwidth consumption while maintaining the ability to process and route packets correctly at the subscriber station
Solution Approach 2:
The patent changes the parameter of packet header transmission from complete transmission to selective transmission or suppression. By modifying the transmission parameters to omit redundant header fields and only transmit essential information, the system achieves efficient bandwidth utilization while preserving packet processing functionality
Data Source
AI summary
A radio access system receives packets from a local source of streaming media content via a local connection and from remote packet sources via a remote network. The radio access system communicates with a subscriber station via an air interface that includes an uplink and a downlink. A packet classifier in the radio access system maps packets having the subscriber station's IP address as destination address to the subscriber station's downlink. The subscriber station communicates with a content controller via the remote network to request selected streaming media content. The content controller instructs the radio access system to convey the selected streaming media content from the local source to the subscriber station. In response, the packet classifier maps the packets containing the selected streaming media content to a downlink (either the original downlink or a new one) for transmission to the subscriber station.