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Multichannel transmission scheduling method based on time domain interference alignment in underwater acoustic network

A technology of transmission scheduling and interference alignment, applied in the field of multi-channel underwater acoustic network transmission scheduling based on time-domain interference alignment, can solve problems such as not considering large propagation delay, not suitable for underwater acoustic network, affecting network throughput, etc., to increase Network throughput, improved throughput, and interference-free effects

Inactive Publication Date: 2020-06-16
HUAQIAO UNIVERSITY
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Problems solved by technology

The traditional wireless sensor network MAC algorithm does not consider the large propagation delay. Directly using the wireless sensor network MAC algorithm for the underwater acoustic network will affect the network throughput. Therefore, this kind of MAC algorithm is not suitable for the underwater acoustic network. It is necessary to design a scheduling algorithm due to the characteristics of propagation delay

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  • Multichannel transmission scheduling method based on time domain interference alignment in underwater acoustic network
  • Multichannel transmission scheduling method based on time domain interference alignment in underwater acoustic network
  • Multichannel transmission scheduling method based on time domain interference alignment in underwater acoustic network

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Embodiment Construction

[0048] 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.

[0049] It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

[0050] The present invention is based on the following scenario: nodes in the network use multiple channels to transmit messages, each node is equipped with an antenna, the antenna can use C channels for information transmission, a...

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Abstract

The invention provides a multichannel transmission scheduling method based on time domain interference alignment in an underwater acoustic network. The method comprises the following steps: S1, network topology representation is carried out, a time slot division model is adopted, the whole message transmission process is divided into a plurality of time slots with the length of [tau], the transmission delay between nodes refers to the time required by message transmission between two nodes, a transmission delay matrix is used for representing a network topology structure, and elements in the matrix represent the number of the time slots required by message transmission between the nodes; S2, transmission scheduling is initialized, the states of the nodes are stored through a three-dimensional matrix, and transmission time slots of the nodes, selected transmission channels and destination nodes are determined; and S3, optimal transmission decision search is carried out, an optimal scheduling problem is searched to be regarded as a sequential decision problem, and the problem can be solved by using dynamic planning. In the multi-channel network model, a plurality of nodes can transmit messages in one time slot at the same time, so that data conflicts are reduced, and the network throughput is increased.

Description

technical field [0001] The invention relates to the technical field of underwater acoustic communication networks, in particular to a multi-channel underwater acoustic network transmission scheduling method based on time-domain interference alignment. Background technique [0002] The underwater acoustic network is a wireless sensor network that uses underwater acoustic channels for communication. It is widely used in civil, military and industrial fields, such as marine environmental research, military intelligence monitoring and collection, and marine resource exploitation and detection. Due to the slow propagation speed of the signal in the underwater acoustic channel, the large transmission delay becomes a major feature that distinguishes the underwater acoustic network from the terrestrial sensor network. The traditional wireless sensor network MAC algorithm does not consider the large propagation delay. Directly using the wireless sensor network MAC algorithm in the un...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04W24/02H04W84/18H04B13/02
CPCH04B13/02H04J11/0023H04W24/02H04W84/18
Inventor 高振国赵楠姚念民卢志茂张忆文陈永红胡凌岳李弼程
Owner HUAQIAO UNIVERSITY
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