中圖分類號：TN92 文獻標志碼：A DOI: 10.16157/j.issn.0258-7998.245170 中文引用格式： 劉灝,，林敏，鄭立寅,，等. 基于IR-UWB的高吞吐量,、低延時MAC協(xié)議硬件設(shè)計[J]. 電子技術(shù)應(yīng)用，2024,，50(10)：44-50. 英文引用格式： Liu Hao,，Lin Min，Zheng Liyin,，et al. Hardware design for high throughput, low latency MAC protocol based on IR-UWB[J]. Application of Electronic Technique,，2024，50(10)：44-50.
Hardware design for high throughput,， low latency MAC protocol based on IR-UWB
Liu Hao,，Lin Min，Zheng Liyin,，Yu Ze
School of Communication and Information Engineering,， Shanghai University
Abstract： For high-speed data transmission in IEEE 802.15.4, a customized MAC protocol with high-throughput and low-latency characteristic is proposed. It is concluded with in-depth analysis of the data transmission model and throughput of HRP UWB PHY, combined with the characteristics of MAC protocol’s Carrier Sense Multiple Access with Collision Avoidance (CSMA-CA) and Guaranteed Timeslot (GTS) for real-time transmission, then the effective management process of the mechanism is designed. Finally, hardware design and verification of the MAC controller is conducted using Verilog HDL in Vivado. Simulation results demonstrate that compared to the classic IEEE 802.15.4 MAC protocol, the proposed MAC controller improves its throughput by 26% and reduces data transmission latency by 17%.
Key words : IEEE 802.15.4；high-speed data transmission,；high-throughput,；low-latency；MAC protocol,；UWB,；Verilog
引言
脈沖無線電超寬帶（Impulse Radio Ultra-Wideband，IR-UWB）是一種直接利用納秒脈沖作為載體進行無線電傳輸?shù)募夹g(shù),，因此UWB信號的持續(xù)時間很短,，導(dǎo)致超過500 MHz的瞬時帶寬和低功率譜密度，使UWB技術(shù)相對于傳統(tǒng)通信系統(tǒng)在密集多徑環(huán)境和高數(shù)據(jù)速率條件下具有顯著優(yōu)勢[1-2],。
