P4P based internet of things system

Abstract

The invention discloses a P4P based internet of things system which consists of a root server group, an access server group, a broadcasting server group, a service server group and a network element management subsystem. The network element management subsystem is connected with the root server group, the access server group, the broadcasting server group and the service server group respectively, and the root server group is further connected with the access server group, the broadcasting server group and the service server group respectively. Point-to-point and point-to-multi-point audio and video transmission is achieved based on a P4P transmission technology. The P4P based internet of things system packages an internet protocol (TP / IP), provides a group of unified transparent communication interfaces for internet of things application service and enables a service logic developer to quick develop and deploy specific service without concerning bottom-layer network communication, transmission reliability, transmission efficiency and other details.

Description

technical field [0001] The invention relates to the technical field of computer communication networks, in particular to a P4P-based Internet of Things system. Background technique [0002] At present, P2P (Peer to Peer) has been deeply rooted in the hearts of the people, and this technology is used in movie downloads, online videos, file downloads, and IM. Through P2P, the download speed of the network and the viewing effect of videos have been greatly improved and improved. However, the popularity of P2P applications puts a lot of pressure on the network bandwidth of telecom operators. P2P applications often take up as much as operators expand, which affects normal Internet services such as web browsing. In this case, P4P technology emerges as the times require, it gives operators and users a new choice, and it is expected to improve user satisfaction while reducing the broadband pressure of operators, so it is considered to be a very promising technology. [0003] In th...

AI Technical Summary

Problems solved by technology

For example, the link from Beijing to Tianjin is the hotspot with the most concentrated traffic. In the process of selecting nodes based on location information, this link is still selected as the closest path regardless of the actual traffic congestion limit, resulting in an overloaded link.

In addition, the locality-based approach does not consider the overhead caused by the differences between different operators

For example, only relying on delay or hop count to select nodes, even if the nodes exchanging data are in the same city, but belong to different ISPs (such as education network, telecom network operators, etc.), the purpose of small delay can be achieved. But it will lead to ISP inter-domain transmission, resulting in unnecessary cost overhead

In the case of unavoidable ISP inter-domain transfer, purely locality-based application selection nodes may pass through ISP links with high overhead without selection, which also causes unnecessary costs

[0007] In addition, P2P applications can also use their own detection technology and mechanism to adjust and select traffic direction. This method also has certain weaknesses: P2P applications themselves need to use reverse traffic engineering to infer (probe) the underlying network status, such as sending probe messages to infer the current topology. information, congestion level, link overhead, etc., it relies on network measurement technology, and the current measurement technology itself consumes network bandwidth resources and cannot fully reflect the real state of the network

Some new technologies such as MPLS exchange do not respond to probe detection messages, making pure network measurement difficult to apply in some occasions

However, reverse engineering of the ISP operator's policy information (which links are expensive and not suitable for P2P applications, and those links between ISPs are cheap, etc.) cannot be speculated

[0008] All in all, it is unrealistic and unreliable to rely solely on P2P applications to solve traffic problems. The birth of P4P technology provides the best solution so far for the overload problem caused by large traffic

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