An end-to-end communication method and system for a delay-tolerant network

Abstract

An end-to-end communication method oriented to a delay-tolerant network, 1) measure and calculate data transmission requirements between end-to-end; data that needs to be interacted between end-to-end are mainly divided into: business data, time data and location data; user The data is determined according to specific business requirements, including sensor data, voice data, images, and video data; time data and location data are collectively referred to as spatiotemporal data; the transmitted data is composed of location information, motion status, and business data, and the business data will be based on 2) Evaluate the transmission capacity of communication; 3) Perform data hosting. Data hosting is to ensure data integrity and exchange forwarding when the source node and destination node are limited by connectivity and traffic capacity. The service method adopted uses the connection between the base station and the node to use the idle time to store the data locally in the base station, and relies on the base station to perform data proxy forwarding.

Description

technical field [0001] The invention belongs to the field of end-to-end communication technology and delay-tolerant network, and in particular relates to an end-to-end communication method and system for a time-tolerant and fault-tolerant network. Background technique [0002] With the continuous development of communication and network technology, the communication network infrastructure has become more and more advanced, and the Internet network has achieved unprecedented success. However, this type of communication network has many assumptions such as: there must be a continuous end-to-end path; Consider communication performance, etc. [0003] However, many network application scenarios cannot meet the above assumptions, and have the following problems and characteristics: 1) In some specific network environments and conditions, such as disaster emergency communications, field communications, Internet of Vehicles, sensor networks, etc. In the network scenario, there ar...

AI Technical Summary

Problems solved by technology

[0003] However, many network application scenarios cannot meet the above assumptions, and have the following problems and characteristics: 1) In some specific network environments and conditions, such as disaster emergency communications, field communications, Internet of Vehicles, sensor networks, etc. In the network scenario, there are gaps in the coverage of ground wireless communication base stations, forming communication islands; 2) Satellite communication can solve the gap in ground wireless coverage, but the use of mobile nodes cannot be limited due to cost performance, equipment size, communication frequency, and power consumption. For example, the communication performance of the current Beidou first-generation satellite short message communication is to provide a short message communication service of up to 120 Chinese characters or 1680 bits each time, and the civilian communication capacity is only 78 bytes; the civilian communication frequency is 60 seconds / time

3) In order to control power consumption, the mobile node cannot maintain the communication state for a long time

[0004] There are many reasons for the intermittent connection of a delay-tolerant network. For example, there is no end-to-end path connecting two nodes at the current moment, the node is temporarily powered off to save resources, and the topology changes due to node movement will cause connection interruption.

Images