A method for cooperative transmission of wifi-zigbee network

A network collaboration and network technology, applied in the direction of wireless communication, electrical components, etc., can solve the problems of unreasonable use of network resources and unsolved cooperative transmission scheduling problems, so as to reduce cross-technical interference, improve data packet reception rate, The effect of reducing transmission delay

Active Publication Date: 2022-06-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these cross-technical communication solutions have not solved the scheduling problem of cooperative transmission in a heterogeneous network environment, and cannot achieve a reasonable use of network resources.

Method used

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  • A method for cooperative transmission of wifi-zigbee network
  • A method for cooperative transmission of wifi-zigbee network
  • A method for cooperative transmission of wifi-zigbee network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A method for collaborative transmission of WiFi-ZigBee network, selecting WiFi AP as a heterogeneous network coordinator between WiFi network and ZigBee network, the heterogeneous network coordinator can obtain the configuration information of WiFi network and ZigBee network, heterogeneous network coordinator The network coordinator obtains configuration information such as figure 2As shown, the coordinator in the ZigBee network will broadcast beacon information to the entire network within a certain time interval, and the beacon frame carries the configuration parameters of the ZigBee network, that is, the configuration information actively sent by the ZigBee coordinator, other devices receive After the beacon frame, the operating state of the radio transceiver module will be adjusted according to the received configuration parameters. The WiFi AP can obtain the configuration information of its network by passively receiving the beacon frame of ZigBee, and can also ac...

Embodiment 2

[0089] The simulation experiment is carried out using the TOSSIM simulation tool.

[0090] The experiment counted the time taken by each node to receive the specified number of data packets in the simulated 40 ZigBee nodes, and plotted as follows: Image 6 The probability distribution diagram of the packet delay shown (the left dashed line in the figure uses CTS aggregation, and the right dashed line does not use CTS aggregation). It can be seen from the figure that the use of CTS to aggregate blank gaps can reach the convergence state earlier than the strategy without CTS, and the average transmission time is reduced by 2.45 times, which means that the entire network has lower energy consumption. During the CTS strategy, WiFi communication leads to the loss of ZigBee data packets and the retransmission caused by the retransmission makes the energy consumption of the entire network higher and higher, and the data packet reception delay will increase many times.

[0091] Use t...

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PUM

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Abstract

The present invention relates to the field of computer application technology, in particular to a method for WiFi-ZigBee network cooperative transmission, establishes a coexistence network cooperative transmission model, and proposes a dynamic convergence blank gap technology, by analyzing the blanks generated in the WiFi network communication process The gap is reasonably scheduled to ensure the data transmission of the ZigBee network in the heterogeneous network coexistence environment; and a non-feedback network layer data encoding technology is used, and the WiFi AP is selected as the coordinator of the heterogeneous network. According to the periodical WiFi network communication flow , to determine the number of data packets that need to be sent to the network and encode the data. When the number of sent data packets reaches the threshold, the generation and transmission of data packets will be stopped without receiving feedback of successful decoding from the receiver. The invention can protect ZigBee communication in a heterogeneous network from being interfered by WiFi, reduce the transmission delay of data packets, increase the data packet reception rate of ZigBee network, improve the asymmetry of WiFi-ZigBee communication links and enhance transmission reliability.

Description

technical field [0001] The present application relates to the technical field of computer applications, and in particular to a method for collaborative transmission in a WiFi-ZigBee network. Background technique [0002] The popularity of IoT applications has led to an explosion of different types of wireless smart devices. Different wireless technologies continue to expand their own living space in their respective fields, and there is a situation where different wireless network technologies coexist in the same physical space. In addition to the need for data communication between devices within a wireless network, there is also a need for cross-network and cross-protocol data sharing and information exchange between different wireless networks. For example, managers can obtain real-time data of environmental detection by ZigBee nodes through smart phones. How to ensure the communication performance of wireless technology in the heterogeneous network coexistence environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04W74/08
CPCH04W72/1215H04W74/0816
Inventor 李士宁刘畅程涛李炳琪
Owner NORTHWESTERN POLYTECHNICAL UNIV
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