Scheduling method and device for regular tetrahedral topology network
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A technology of regular tetrahedron and topological network, which is applied in the field of scheduling of regular tetrahedral topological network and can solve the problem of no perfect scheduling scheme.
Active Publication Date: 2021-12-03
JILIN UNIV
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Linear topologies with three nodes or more are considered to have no perfect scheduling scheme
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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0035] It can be seen from the background technology that the existing topology structures that can support the full-connection fair and perfect scheduling scheme mainly include single point-to-point scheduling and triangle topology scheduling. Linear topologies with three nodes or more are considered to have no perfect scheduling scheme.
[0036] In view of this, the present invention provides a scheduling method and device for a regular tetrahedral topology ...
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Abstract
The invention discloses a scheduling method and device for a regular tetrahedral topological network. Node No. 1, Node No. 2, Node No. 3 and Node No. 4 in the regular tetrahedral topological network respectively follow the scheduling sequence [4,3,2, 0,0,0], [0,0,1,3,4,0], [0,1,0,2,0,4 and [1,0,0,0,2,3] for data scheduling ; Among them, the scheduling sequence of four nodes constitutes a round-robin scheduling table, the length of the time slot for executing the round-robin scheduling table is one-third of the propagation delay, and the frame length is twice the propagation delay, and the numbers in the scheduling sequence represent the current A time slot sends a data packet to the node corresponding to the number, and 0 indicates receiving a data packet in the current time slot. The invention realizes full-connection fair and perfect scheduling of the regular tetrahedral topology network of four nodes by equally dividing the propagation time delay.
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technical field [0001] The invention relates to the technical field of underwater acoustic networks, in particular to a scheduling method and device for a regular tetrahedral topology network. Background technique [0002] Media control protocols in underwater acoustic networks face a series of unique challenges represented by long propagation delays. Through the time-space domain application of interference alignment technology, a class of space-domain multiplexing time division multiple access characterized by long propagation delays The access protocol is proposed, and the scheduling algorithm that can achieve no idle time slot is called perfect scheduling, which is a scheduling algorithm that can make this type of protocol reach the upper limit of throughput. [0003] Existing topologies that can support full-connection fair and perfect scheduling mainly include single point-to-point scheduling and triangle topology scheduling. Linear topologies with three nodes or more...
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