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Distributed synchronization-free transmission scheduling method and system for multi-hop wireless network

A multi-hop wireless network and transmission scheduling technology, applied in the field of distributed synchronization-free transmission scheduling, to achieve the effects of improving scalability, ensuring certainty and reliability, and ensuring certainty and reliability

Active Publication Date: 2020-06-23
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The distributed network architecture eliminates the problem of single point of failure and effectively solves the key problems in the practical application of industrial wireless networks

Method used

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  • Distributed synchronization-free transmission scheduling method and system for multi-hop wireless network
  • Distributed synchronization-free transmission scheduling method and system for multi-hop wireless network
  • Distributed synchronization-free transmission scheduling method and system for multi-hop wireless network

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Experimental program
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Embodiment 1

[0064] Embodiment 1 provides a distributed synchronization-free transmission scheduling system for a multi-hop wireless network, such as figure 1 shown, including:

[0065] The design module 11 is used to design a single-hop synchronization-free sending and receiving scheduling mode, so that any node can use two or more sending time slots in one cycle to repeatedly send data packets to determine that different nodes are running independently and asynchronously. There is no conflict within the delay range;

[0066] Building block 12, for constructing multi-hop wireless network system model;

[0067] The selection module 13 is used to send the uniform distribution of time slots, and select a scheduling from multiple scheduling schemes corresponding to several nodes according to the uniformity of the time slots and the end-to-end delay in the multi-hop wireless network system model Program;

[0068] A first distribution module 14, configured to distribute the selected scheduli...

Embodiment 2

[0119] This embodiment provides a distributed synchronization-free transmission scheduling method for a multi-hop wireless network, including:

[0120] S1. Design a single-hop synchronization-free sending and receiving scheduling mode, so that any node can use two or more sending time slots to repeatedly send data packets within a cycle to determine that different nodes are operating independently and asynchronously. The sending time slots are within a certain delay range No internal conflict;

[0121] S2. Constructing a multi-hop wireless network system model;

[0122] S3. The uniform distribution of the sending time slot, according to the uniformity of the time slot and the end-to-end delay in the multi-hop wireless network system model, select a scheduling scheme from a variety of scheduling schemes corresponding to several nodes;

[0123] S4. Distributing the selected scheduling scheme to all nodes in the network;

[0124] S5. If there is an interference scenario between...

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Abstract

The invention discloses a distributed synchronization-free transmission scheduling system for a multi-hop wireless network, and the system comprises a design module which is used for designing a single-hop synchronization-free receiving and transmitting scheduling mode; the construction module is used for constructing a multi-hop wireless network system model; the selection module is used for sending the uniform distribution condition of the time slots and selecting a scheduling scheme; the first distribution module is used for distributing the selected scheduling scheme to all nodes in the network; the second distribution module is used for changing a distribution strategy if an interference scene exists between the subnets, so that different scheduling modes are distributed to the nodesand the adjacent nodes of the adjacent subnets on the same layer; the aggregation module is used for enabling the sensing nodes to periodically upload data packets to the aggregation node according toa sampling period; the response module is used for adding an ACK response mechanism into the aggregated data stream; and the distribution module is used for enabling the aggregation node to periodically distribute the data packets to all nodes of the whole network.

Description

technical field [0001] The invention relates to the technical field of industrial wireless networks, in particular to a distributed synchronization-free transmission scheduling method and system for a multi-hop wireless network. Background technique [0002] Industry 4.0 is a new industry trend that relies on data-driven business models and aims to increase the level of intelligence in manufacturing, and its technological foundations are cyber-physical systems (CPS) and the Internet of Things (IoT). As the basic technology of the Industrial Internet of Things, the industrial wireless network provides a strong technical impetus for the development of Industry 4.0 due to its flexible system configuration scheme, and has attracted more and more attention from the industry. However, due to the shortcomings of the current industrial wireless network in terms of real-time communication, certainty of transmission, and reliability guarantee, it has not been widely used in industrial...

Claims

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Application Information

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IPC IPC(8): H04W28/14H04W40/22H04W72/12H04W74/08H04L1/16H04W4/70H04W16/18H04W16/22
CPCH04W28/14H04W40/22H04W72/1263H04W74/0816H04L1/1607H04W4/70H04W16/18H04W16/22Y02D30/70
Inventor 裘莹陈志轩徐伟强陈文兵梁超柯杰
Owner ZHEJIANG SCI-TECH UNIV