IP Multiplexing Segmentation for Bandwidth and Delay Trade-offs
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Solution Overview
Problem
Current IP multiplexing systems face challenges in achieving bandwidth gain while maintaining low multiplexing sampling time, especially in networks with many media gateways and IP addresses, which is critical for real-time applications like voice and facsimile due to increased end-to-end delay.
Innovation Solution
The method involves a source multiplexer collecting data packets from multiple source IP hosts, adding source and destination IP addresses to a multiplexing packet, and including destination information for each data packet, allowing for efficient multiplexing and demultiplexing, with IP addresses structured to have a common and distinguishing part to minimize bandwidth usage, and ensuring the destination multiplexer can handle the packet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the multiplexing sampling time interval is increased to collect sufficient IP packets, then bandwidth gain is improved, but end-to-end delay increases which degrades real-time service quality
Solution Approach 1:
The patent segments the multiplexing process by introducing intermediate aggregation points (access routers or IP hosts) that perform preliminary multiplexing of packets from multiple sources. This segmentation allows the core network multiplexer to operate at lower sampling intervals while still achieving high overall multiplexing ratios, thus reducing end-to-end delay while maintaining bandwidth gain.
2Quantity of substance
If the number of media gateways and IP addresses per gateway is increased to serve more subscribers, then network capacity is improved, but the number of multiplexing streams increases dramatically reducing multiplexing gain
Solution Approach 1:
The patent merges multiple IP packets from different sources into a single IP multiplexing packet at intermediate aggregation points before transmission over the IP backbone. By combining packets from multiple media gateways and IP hosts at these intermediate points, the system achieves high overall multiplexing ratios even with large numbers of sources, thus maintaining multiplexing gain while supporting increased network capacity.
3Measurement precision
If IP multiplexing is performed per IP source/destination stream in networks with many media gateways, then routing precision is improved, but the number of packets multiplexed per time interval decreases
Solution Approach 1:
The patent introduces an additional dimension to the multiplexing structure by creating hierarchical levels: individual IP streams are multiplexed at the source level, then multiple such streams are aggregated at intermediate routers, and finally aggregated streams are multiplexed in the core network. This multi-dimensional approach allows precise routing of individual streams while achieving high multiplexing ratios at each level.
Data Source
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AI summary
The invention relates to a method for multiplexing data packets from different IP hosts to one multiplexing packet before it is sent to a destination IP host, where the different data packets in the multiplexing packet are distributed to the different destination IP hosts.