Ethernet Packet Compression via Predictable Field Dropping
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Solution Overview
Problem
Current technologies lack effective methods for compressing Ethernet packets over Ethernet links without altering the protocol or affecting addresses, leading to inefficient bandwidth usage in cellular networks.
Innovation Solution
A method and device for compressing and decompressing Ethernet packets by identifying and dropping predictable fields, using a compression/decompression procedure at the Ethernet layer, which allows for transparent transmission and restoration of packets without changing the source and destination addresses, enabling more efficient bandwidth use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If Ethernet packets are transmitted without compression, then protocol simplicity and transparency are maintained, but bandwidth utilization is inefficient
Solution Approach 1:
The Ethernet packet is segmented into distinct fields (destination address, source address, length/type, data, FCS) allowing selective identification and compression of specific predictable fields while leaving other fields unchanged, thus achieving compression without requiring complete protocol restructuring
Solution Approach 2:
The invention changes the parameter representation by identifying predictable fields and replacing them with compression indicators or shortened representations, transforming the packet structure from full-field transmission to compressed-field transmission while maintaining the ability to restore original packets at the destination
2Loss of energy
If IP header compression is applied at layer 3, then packet size is reduced, but protocol compatibility and network logic are altered
Solution Approach 1:
The invention introduces an intermediary compression layer that operates between the physical Ethernet layer and the IP layer, acting as a mediator that compresses Ethernet frames without requiring changes to IP protocols or upper-layer applications, thus maintaining protocol compatibility while achieving bandwidth efficiency
Solution Approach 2:
The invention extracts only the essential unpredictable portions of Ethernet packets for transmission, separating predictable fields (which can be inferred or are constant) from unpredictable data fields, thereby reducing transmitted data volume without affecting protocol operation at higher layers
3Productivity
If Ethernet packet compression is implemented, then bandwidth efficiency is improved, but device complexity and implementation cost increase
Solution Approach 1:
The compression system uses self-service mechanisms where the transmitter and receiver establish compression contexts and synchronize state information autonomously, allowing them to service their own compression needs without requiring complex external control systems or expensive dedicated compression hardware
Solution Approach 2:
The invention performs preliminary actions by establishing compression contexts and identifying predictable fields before actual packet transmission begins, allowing the system to prepare compression parameters and patterns in advance, thus reducing real-time processing complexity during active data transmission
Data Source
AI summary
Technique for transmitting Ethernet packets from an Ethernet source point to an Ethernet destination point via a communication link, comprising compression of the packets in such a manner that the source point transmits complete Ethernet packets, the communication link carries shortened information blocks (SIB) obtained from said complete Ethernet packets, while the destination point receives complete Ethernet packets essentially identical to those transmitted from the source point.