基于Wi-Fi的無(wú)線控制網(wǎng)絡(luò)TDMA協(xié)議的設(shè)計(jì)
發(fā)布時(shí)間：2019-05-30 08:58
【摘要】：為解決多種網(wǎng)絡(luò)協(xié)議共存的混合無(wú)線網(wǎng)絡(luò)環(huán)境中,控制信息高速、實(shí)時(shí)、可靠傳輸?shù)膯?wèn)題,在IEEE802.11協(xié)議MAC層基礎(chǔ)上開發(fā)了TDMA協(xié)議。該協(xié)議在充分利用Wi-Fi高傳輸速率的同時(shí),解決了Wi-Fi退避重傳機(jī)制導(dǎo)致傳輸時(shí)延不確定的問(wèn)題,增強(qiáng)系統(tǒng)的實(shí)時(shí)性。實(shí)驗(yàn)結(jié)果表明,協(xié)議在保證95%以上的傳輸可靠性的同時(shí),傳輸速率可達(dá)5 Mb/s,相較于典型的基于IEEE 802.15.4協(xié)議的工業(yè)控制網(wǎng)絡(luò)有大幅提高。TDMA系統(tǒng)中的短幀中有95.4%、長(zhǎng)幀中有89.87%可以在2 ms以內(nèi)的發(fā)送完成,傳輸時(shí)延遠(yuǎn)低于原有的Wi-Fi標(biāo)準(zhǔn)。此外,系統(tǒng)不改變上層協(xié)議棧,保持接口的兼容性,便于控制應(yīng)用程序的開發(fā)。
[Abstract]:In order to solve the problem of high speed, real time and reliable transmission of control information in hybrid wireless network environment where multiple network protocols coexist, TDMA protocol is developed on the basis of MAC layer of IEEE802.11 protocol. While making full use of the high transmission rate of Wi-Fi, the protocol solves the problem of uncertain transmission delay caused by Wi-Fi back-off retransmission mechanism and enhances the real-time performance of the system. The experimental results show that the transmission rate can reach 5 Mb/s, while ensuring more than 95% transmission reliability. Compared with the typical industrial control network based on IEEE 802.15.4 protocol, 95.4% of the short frames and 89.87% of the long frames can be transmitted within 2 ms. The transmission delay is much lower than the original Wi-Fi standard. In addition, the system does not change the upper protocol stack, maintains the compatibility of the interface, and is convenient to control the development of the application program.
【作者單位】： 武漢大學(xué)電子信息學(xué)院;
【分類號(hào)】：TN92
本文編號(hào)：2488710
[Abstract]:In order to solve the problem of high speed, real time and reliable transmission of control information in hybrid wireless network environment where multiple network protocols coexist, TDMA protocol is developed on the basis of MAC layer of IEEE802.11 protocol. While making full use of the high transmission rate of Wi-Fi, the protocol solves the problem of uncertain transmission delay caused by Wi-Fi back-off retransmission mechanism and enhances the real-time performance of the system. The experimental results show that the transmission rate can reach 5 Mb/s, while ensuring more than 95% transmission reliability. Compared with the typical industrial control network based on IEEE 802.15.4 protocol, 95.4% of the short frames and 89.87% of the long frames can be transmitted within 2 ms. The transmission delay is much lower than the original Wi-Fi standard. In addition, the system does not change the upper protocol stack, maintains the compatibility of the interface, and is convenient to control the development of the application program.
【作者單位】： 武漢大學(xué)電子信息學(xué)院;
【分類號(hào)】：TN92
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