Substitute Packet Header for Low-Bandwidth Data Transport
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Solution Overview
Problem
Cellular radio links face bandwidth bottlenecks and increased latency due to the processing loads and bandwidth consumption of Robust Header Compression (RoHC) operations, particularly in VoLTE, which affects the quality of voice connections.
Innovation Solution
A method that reduces bandwidth on network access links by generating a substitute packet with a short path label and connection identifier, eliminating the need for Internet Protocol headers, and using Label Switched Paths to extend efficient packet forwarding and reduced latency to end-user devices, including smartphones and tablets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If standard Internet Protocol headers are used in packet transmission, then routing information is complete and accurate, but bandwidth consumption increases and transmission efficiency decreases
Solution Approach 1:
The patent extracts and removes the standard Internet Protocol header from packets, retaining only the essential payload data. A simplified header structure with minimal routing information (destination address, length, and control bits) is implemented instead, eliminating the bandwidth overhead of complete IP headers while preserving necessary routing functionality through the header compression mechanism
Solution Approach 2:
The patent creates a compressed copy of the original packet by replacing the full IP header with a simplified header structure. The essential routing information is copied in a condensed form, and the complete packet can be reconstructed at the destination using the stored header template and the compressed transmission data
2Loss of energy
If Robust Header Compression (RoHC) operations are performed on packets, then bandwidth efficiency is improved, but processing load increases and latency increases
Solution Approach 1:
The patent performs preliminary header compression at the source device before packet transmission. The header compression context is established and maintained at both ends, allowing subsequent packets to be transmitted with minimal header information. This preliminary setup eliminates the need for complex real-time compression operations during transmission, reducing processing latency while maintaining bandwidth efficiency
Solution Approach 2:
The patent implements a self-sustaining header compression mechanism where the source and destination devices maintain synchronized header contexts independently. The compression and decompression operations are performed autonomously at each end without requiring complex intermediary processing, reducing overall system processing load and latency
3Loss of energy
If Label Switched Paths are extended to end-user devices, then access bandwidth efficiency is improved and cost is reduced, but device complexity increases
Solution Approach 1:
The patent implements a universal header format that can be used across different network layers and protocols. The simplified packet structure with embedded routing information can function both as a Layer 2 frame and carry Layer 3 routing context, eliminating the need for separate header processing logic and reducing device complexity while maintaining multi-protocol compatibility through the Label Switched Path infrastructure
Data Source
AI summary
A method is disclosed for more efficiently and economically transporting data on a network using network access links between the first switch, which is the entry point of the network, and an end-user device, which is either on a fixed link on a customer premises or is a mobile device. The method includes terminating one or more protocol sessions at the first switch and removing corresponding packet headers. The first switch creates a substitute packet, adding a substitute header that identifies the transport path and the communications connection. Removed headers are not delivered to the end-user device which processes received substitute packets into usable streams based on the substitute header.