Roaming Radio Header Compression for Aeronautical Bandwidth
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Solution Overview
Problem
The use of two network headers in communication between a roaming mobile carrier and a network access gateway leads to non-optimal use of radio channel bandwidth, particularly in low-bandwidth aeronautical communication links, due to the overhead of two IPv6 headers, and existing header compression methods are complex and sensitive to desynchronization.
Innovation Solution
A method that deletes predictable fields from network headers and reconstructs them during reception, optimizing data packet transmission by eliminating the external and internal headers and adding a link header with non-predictable fields, thereby reducing bandwidth consumption and maintaining data integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two network headers (external and internal) are used to establish communication links for mobility management, then mobility management capability is improved, but bandwidth consumption increases
Solution Approach 1:
The patent extracts and removes the external network header from the data packet transmission. By eliminating this redundant header that contains predictable fields (source address, destination address, protocol type), the system reduces bandwidth consumption while maintaining mobility management functionality through alternative mechanisms at the gateway and home agent.
Solution Approach 2:
The system discards the external network header during transmission but recovers the necessary routing information through the home agent's mobility management tables. The home agent reconstructs the appropriate routing paths without requiring the external header to be transmitted over the radio link, thus recovering functionality while reducing bandwidth usage.
2Quantity of substance
If header compression mechanisms are used to reduce bandwidth overhead, then bandwidth consumption is reduced, but system complexity and desynchronization sensitivity increase
Solution Approach 1:
Instead of using complex compression algorithms, the patent extracts only the necessary non-predictable fields from the network headers and transmits them minimally. The predictable fields are eliminated from transmission entirely, as they can be reconstructed by the receiving end using default values or previously established context, thereby reducing bandwidth without requiring complex compression/decompression logic.
Data Source
AI summary
A data communication method between a mobile radio communications equipment and a gateway connected to a network, the data being organized in the form of packets comprising at least one first internal header and a second external header, comprises: an initial information exchange phase comprising: transmission by the radio communications equipment to the gateway of at least one predictable field out of the fields of the external and internal headers, reception by the radio communications equipment from the gateway of at least one predictable field of the external header, a phase of transmission of at least one data packet comprising: the deletion of the external and internal headers of at least one data packet, the generation, in at least one data packet, of a header of level lower than a network layer comprising at least one non-predictable field of the internal header, the transmission of at least one data packet.