Content Frame Fragmentation and Retransmission in Content-Named Networking
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Solution Overview
Problem
In content-name networking, efficient content transmission and retransmission are hindered by the lack of effective frame identification and retransmission mechanisms, leading to potential frame loss and increased network usage compared to IP-based networking.
Innovation Solution
A method and system for content transmission and reception that involves fragmenting content into frames, generating headers with frame identifiers based on content names or segment numbers, and utilizing a link adaptor layer to manage frame transmission and retransmission requests, enabling efficient retransmission of lost frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If content is transmitted without frame identification mechanisms in content-name networking, then the networking simplicity is maintained, but frame loss occurs and retransmission efficiency deteriorates
Solution Approach 1:
The content is divided into multiple frames, each with a unique frame identifier. This segmentation allows individual frame tracking and retransmission, improving reliability without requiring complex overall retransmission mechanisms. The frame identifier enables precise identification of which specific frame is lost and needs retransmission.
Solution Approach 2:
The receiver sends feedback information about received frames, enabling the transmitter to identify lost frames and retransmit them. This feedback mechanism provides the necessary information for reliable delivery without requiring complex forward error correction or other complex reliability mechanisms.
2Productivity
If content is transmitted as whole segments without fragmentation, then transmission overhead is reduced, but network usage increases and transmission efficiency deteriorates
Solution Approach 1:
Content is fragmented into smaller frames that can be efficiently transmitted through the network. This segmentation reduces network usage by allowing better utilization of network resources and enables parallel transmission of multiple frames, improving overall transmission efficiency while reducing the burden on any single network link.
Solution Approach 2:
The content transmission is divided into multiple smaller units (frames) with different parameters such as frame identifiers and sequence numbers. This parameterization allows for efficient network transmission by enabling selective retransmission and better network resource utilization, improving productivity while controlling network usage.
3Measurement precision
If frame identifiers are generated based on detailed content information, then frame identification accuracy is improved, but header generation complexity increases
Solution Approach 1:
The frame identifier extracts only the essential identification information from the content, separating it from the actual content data. This extracted identifier is sufficient for frame identification and retransmission purposes, providing accurate frame identification without requiring the entire content information to be processed, thus reducing header generation complexity.
Data Source
AI summary
A method of transmitting content to a content receiver and of receiving content from a content transmitted is provided. The method may include receiving, at a content transmitter, a content transmission request fragmenting a segmented content corresponding to the content transmission request into at least one frame, generating a header comprising a frame identifier for the at least one frame, and transmitting the at least one frame and the header to the content receiver.