Time slot occupation method based on delay tolerance evaluation in optical communication network

Abstract

The invention discloses a time slot occupation method based on delay tolerance assessment in an optical communication network. The time slot occupation method comprises the following steps: S1, starting a current node CH0 time slot; S2, obtaining an LQI value and APT response time corresponding to each j through parallel processing according to the signaling interaction between the current node CH0 and the next hop node CHj, and calculating to obtain the delay tolerance from CH0 to CHj; S3, judging whether the delay tolerance is greater than or equal to a preset threshold T, if so, entering astep S4, and if not, entering a step S7; S4, enabling the current node CH0 to abandon the time slot uplink transmission opportunity, and inform surrounding adjacent CH nodes of occupying the time slotby using LED broadcast; S5, judging whether the delay tolerance 'of the adjacent CH node satisfies' (T), if so, entering a step S6, and if not, entering a step S8, S6, adopting a conflict back-off mechanism to compete the time slot by the surrounding adjacent CH nodes meeting the condition, S7, carrying out uplink data transmission by the CH node, and S8, entering a next time slot.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a time slot occupation method based on delay tolerance evaluation in an optical communication network. Background technique [0002] Delay-tolerant networks widely exist in various networks, such as satellite networks, disaster monitoring networks, wildlife tracking networks, underwater communication networks, etc. There are few existing routing solutions for delay-tolerant networks, mainly using store-and-forward technology to store and forward data packets through source nodes or intermediate nodes until they reach the destination node. However, this technology is limited by the energy constraints of nodes, the way of movement, the selection of intermediate nodes, and the limitation of network cache space. There are few existing methods to solve the delay-tolerant state of optical communication networks. Some of them focus on solving the delay-tolerant state ...

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Problems solved by technology

[0003] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and to provide a time slot occupancy method based on delay tolerance evaluation in an optical communication network, so as to solve or improve the above-mentioned problems

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