Access system and method for ultraviolet light communication network
A communication network and access system technology, which is applied in the access system of ultraviolet communication network and the field of conflict-free access system, can solve the problems of degraded network performance, waste of communication resources, communication conflicts, etc., and reach the number of node access Flexible, simplified protocol design and implementation complexity, and improved channel utilization
Active Publication Date: 2021-04-09
ARMY ENG UNIV OF PLA
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The advantage of this method is that it is simple and reliable, but the disadvantage is that there may be a waste of communication resources; the other is a conflict avoidance scheme based on contention channels, and each terminal can randomly access the network according to needs, which may cause communication conflicts and requires a relatively complex design collision detection or collision avoidance mechanism, which may eventually degrade network performance
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[0040] For the networking application of ultraviolet communication terminals, it is necessary to design a new access protocol mechanism that meets its requirements. The present invention proposes a novel conflict-free contention access method, which can effectively solve problems such as channel competition and access conflicts in the application of ultraviolet light networking, and becomes one of the key technologies for constructing ultraviolet light communication networks. That is to say, the new conflict-free contention access method in the present invention proposes a contention access protocol mechanism similar to the "optical bus", which is used in the networking application of ultraviolet light communication terminals, enabling it to have random access to network nodes. It provides a new effective mechanism and feasible method for autonomous and flexible networking of ultraviolet communication terminals, and further promotes practical applications such as ultraviolet co...
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An access system and method for an ultraviolet communication network, including that in a local area network space of ultraviolet communication, when any ultraviolet communication node serving as an ultraviolet communication terminal needs to transmit information, the ultraviolet communication node It is manifested as independently emitting light or not emitting light; according to the dominant state or invisible state respectively represented by the ultraviolet light communication node as the ultraviolet light communication terminal emitting light or not emitting light, the state of the entire ultraviolet light communication network is constituted by the superposition principle of light, here Contention for access to the channel is performed on a basis. Combined with other structures or methods, it effectively avoids the basic mechanism, frame structure definition, protocol flow, etc. defects of competition and conflict.
Description
technical field [0001] The present invention relates to the field of wireless optical communication technology and networking technology, in particular to an access system and method for an ultraviolet communication network, especially to an access system and method for an ultraviolet communication network, especially The invention relates to a contention-free and contention-free access system and method for an ultraviolet light communication network. Background technique [0002] As a new type of communication technology, wireless optical communication has the advantages of both optical fiber communication and mobile communication. It can realize broadband transmission, flexible networking, no frequency application, anti-electromagnetic interference, and good confidentiality. Therefore, wireless optical communication research has received extensive attention. Specifically, wireless optical communication is a communication technology that uses light as the carrier and free ...
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IPC IPC(8): H04B10/11H04Q11/00
CPCH04B10/11H04Q11/0067H04Q2011/0086
Inventor 李建华汪井源吴传信徐智勇赵继勇韦毅梅李成
Owner ARMY ENG UNIV OF PLA