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A Mobile Node Access Method Based on Time Division Multiple Access

A mobile node and access method technology, applied in access restriction, wireless communication, network topology, etc., can solve problems such as time slot waste and low network throughput

Active Publication Date: 2021-07-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The time division multiple access protocol for the existing mobile nodes to access the underwater acoustic sensor network has the problem of serious waste of time slots when no mobile nodes join, resulting in low network throughput

Method used

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  • A Mobile Node Access Method Based on Time Division Multiple Access
  • A Mobile Node Access Method Based on Time Division Multiple Access
  • A Mobile Node Access Method Based on Time Division Multiple Access

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Experimental program
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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] In TDMA protocols for underwater acoustic sensor networks, time is usually divided into countless frames, and each time frame is divided into many time slots. In order to reduce the time slot waste when no mobile node joins, this scheme divides the time frame into control time slots and data transmission time slots. The central node monitors and broadcasts control packets in the control time slot, and receives data from the slave nodes in the data transmission time slot. In the control time slot, if the central node receives the network access request packet from the mobile node, it will allocate a time slot to the mobile node, and broadcast the new time slot information on the control packet of the central node; otherwise, the central node will listen for a period of After the time, broadcast the control packet containing the data acknowledgmen...

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Abstract

The present invention provides a mobile node access method based on time division multiple access, no time slot is allocated when no mobile node joins, time slots are allocated to the mobile node when the mobile node joins the network, and the mobile node's time slot is deleted after the data of the mobile node is sent time slots, thus reducing the waste of time slots when no mobile nodes join. Because the present invention adopts the method of dynamic access of the mobile node, it can reduce the time slot waste when no mobile node joins, so that the network has a higher throughput rate before and after the mobile node joins. The method of the invention is simple and effective, has low cost, simple operation and implementation, and is practicable.

Description

technical field [0001] The invention relates to the field of self-organizing wireless sensor networks, in particular to an access method for underwater acoustic sensor networks, which is suitable for static underwater acoustic sensor networks connected by mobile nodes. Background technique [0002] Media Access Control (MAC, Media Access Control) is a sublayer of the data link layer, which manages media access and is responsible for coordinating efficient and fair access channels for all nodes in the network, so that many users can achieve fair and effective Share limited bandwidth resources. Efficient media access methods help nodes avoid data packet collisions during data transmission, improve channel utilization, reduce the probability of retransmission of data packets, thereby reducing energy waste and prolonging the life cycle of the entire network, which is crucial to network operation role. [0003] At present, researchers have invested a lot of manpower and materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W48/10H04W48/16H04W72/04H04W84/18
CPCH04W24/02H04W48/10H04W48/16H04W72/0446H04W84/18H04W72/53
Inventor 申晓红张黎明赵瑞琴梅毫迪张钦政
Owner NORTHWESTERN POLYTECHNICAL UNIV