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WiFi-ZigBee network-oriented cooperative transmission method

A network collaboration and network technology, applied in electrical components, wireless communication and other directions, can solve the problem of unsolved cooperative transmission scheduling and the inability to achieve rational use of network resources, so as to reduce cross-technology interference, improve data packet reception rate, The effect of increasing the reception rate

Active Publication Date: 2021-08-06
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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  • WiFi-ZigBee network-oriented cooperative transmission method
  • WiFi-ZigBee network-oriented cooperative transmission method
  • WiFi-ZigBee network-oriented cooperative transmission method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A method for WiFi-ZigBee network cooperative transmission, select WiFi AP as the heterogeneous network coordinator between the WiFi network and the ZigBee network, the heterogeneous network coordinator can obtain the configuration information of the WiFi network and the ZigBee network, heterogeneous 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 configuration parameters of the ZigBee network are carried in the beacon frame, that is, the configuration information actively sent by the ZigBee coordinator, and received by other devices After the beacon frame, the operating status of the radio transceiver module will be adjusted according to the received configuration parameters. Described WiFi AP can obtain the configuration information of its network by receiving the beacon frame of ZigBee passively, als...

Embodiment 2

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

[0090] The experiment counts the time used by each node in the simulated 40 ZigBee nodes to receive the specified number of data packets, and draws the following Figure 6 The probability distribution diagram of the data packet delay is shown (the dotted line on the left in the figure uses CTS aggregation, and the dotted line on the right does not use CTS aggregation). It can be seen from the figure that using CTS to converge blank gaps can reach the converged state earlier than the strategy without using CTS, which reduces the transmission time by an average of 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, which causes retransmission, which makes the energy consumption of the entire network higher and higher, and the delay of receiving data packets will also increase many times....

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Abstract

The invention relates to the technical field of computer application, in particular to a WiFi-ZigBee network-oriented cooperative transmission method, establishes a coexistence network cooperative transmission model, provides a dynamic convergence blank gap technology, and improves the communication efficiency by reasonably scheduling blank gaps generated in a WiFi network communication process, the data transmission of the ZigBee network in the heterogeneous network coexistence environment is ensured; a non-feedback network layer data coding technology is used, a WiFi AP is selected as a coordinator of a heterogeneous network, the number of data packets needing to be sent to the network is determined according to WiFi network communication flow in a period, data coding is carried out on the data, and when the number of the sent data packets reaches a threshold value, successful decoding feedback of a receiver does not need to be received, and the generation and the transmission of the data packet are stopped. According to the invention, ZigBee communication in a heterogeneous network can be protected from WiFi interference, the transmission delay of a data packet is reduced, the data packet receiving rate of the ZigBee network is increased, the asymmetry of a WiFi-ZigBee communication link is improved, and the transmission reliability is improved.

Description

technical field [0001] The present application relates to the field of computer application technology, in particular to a method for cooperative transmission in a WiFi-ZigBee network. Background technique [0002] The popularity of IoT applications has led to an explosion of different kinds of wireless smart devices. Different wireless technologies continue to expand their own living space in their respective fields, and gradually different wireless network technologies coexist in the same physical space. In addition to the need for data communication between devices within the 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 ZigBee nodes for environmental detection through smart phones. How to ensure the communication performance of wireless technology in the coexistence environment of heterogeneous networks has become o...

Claims

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Application Information

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Patent Type & Authority Applications(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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