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基于FPGA的千兆以太网端口通信设计 被引量:2
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作者 兰唯 韩延喆 扈啸 《电子科技》 2024年第1期48-54,共7页
针对嵌入式领域中以太网传输速率以及实时性问题,文中提出了一种基于FPGA(Field Programmable Gate Array)的千兆以太网端口通信的设计方案。设计了千兆以太网交换机的转发功能,基于标签转发实现了端对端数据通信。CPU(Central Processi... 针对嵌入式领域中以太网传输速率以及实时性问题,文中提出了一种基于FPGA(Field Programmable Gate Array)的千兆以太网端口通信的设计方案。设计了千兆以太网交换机的转发功能,基于标签转发实现了端对端数据通信。CPU(Central Processing Unit)发出带有标签的数据报文,通过千兆网口输出数据报文,经过RGMII(Reduced Gigabit Media Independent Interface)接口将带标签的数据报文发送给FPGA,FPGA通过内部逻辑判断标签中的输出端口号域并去除标签,从相应千兆网口向连接设备输出数据报文。外设通过千兆网端口输入数据报文,通过SGMII(Serial Gigabit Media Independent Interface)协议将数据报文发送给FPGA,FPGA通过内部逻辑添加标签并轮询输出给CPU,从而实现多个千兆网口连接设备互通。实验结果验证了FPGA逻辑的可行性和有效性,传输速率达到1 Gbit·s-1,报文转发延时小于100μs,报文丢包率为0%,数据传输稳定性较高,满足现有项目的实际需求。 展开更多
关键词 FPGA 千兆以太网 以太网交换机 标签 CPU 数据报文 RGMII接口 SGMII协议
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2019年国际安全形势:和平局面保持、乱象危机频发 被引量:2
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作者 孟祥青 韩延哲 《当代世界》 CSSCI 2020年第1期18-25,共8页
2019年,世界多地动乱频发,特别是拉美地区,发生在一国之内的政治和社会动荡向多国蔓延,并呈持续扩散之势。西亚北非、欧洲、南亚等地区的动乱此起彼伏;传统安全问题进一步上升。除俄罗斯外,各主要国家军费开支再创新高,人工智能军备竞... 2019年,世界多地动乱频发,特别是拉美地区,发生在一国之内的政治和社会动荡向多国蔓延,并呈持续扩散之势。西亚北非、欧洲、南亚等地区的动乱此起彼伏;传统安全问题进一步上升。除俄罗斯外,各主要国家军费开支再创新高,人工智能军备竞赛初露端倪,美国退出《中导条约》正引发严重后果,太空战也被提上大国军事战略日程,海湾地区冲突和战乱不断;特朗普政府继续坚持“美国优先”,大力推行单边主义和保护主义等霸凌政策,与传统盟友关系裂痕加深,与俄罗斯在中东地区的博弈更趋复杂,与中国的战略竞争不断加剧,大国安全合作不进反退。在上述背景下,全球动荡源和风险点明显增多,中国周边安全环境趋稳向好,但潜在热点和不确定因素增多。同时,当今世界和平、发展、合作的时代潮流未变,维护全球安全治理体系基石的积极力量在不断积聚,这将对国际安全秩序的重组、重塑产生积极影响。 展开更多
关键词 国际安全 地区动荡 传统安全 大国安全关系 中国周边安全
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GLOBAL SECURITY IN 2019: PEACE AMID TURMOIL AND CRISIS
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作者 MENG XIANGQING han yanzhe 《Contemporary World》 2020年第1期14-19,共6页
The world in 2019 was generally peaceful and stable.For major countries,despite more confrontations and frictions among them,there was also contact through competition as well as selective cooperation,and the bottom l... The world in 2019 was generally peaceful and stable.For major countries,despite more confrontations and frictions among them,there was also contact through competition as well as selective cooperation,and the bottom line of no military conflict or war was not crossed.Nevertheless,the global security in 2019 was also marked by chaos and crisis.There were more sources of upheavals and risks,the regional security situations were more complex and severe,and progress of global security governance was obstructed by difficulties.Political and social turmoils in some countries were threatening to spill over to the whole region,even to the whole world. 展开更多
关键词 CRIS CHAOS FRICTION
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International Security Situation in 2019: Peaceful Situation Maintained but Chaos and Crises Emerged Frequently
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作者 Meng Xiangqing han yanzhe 《Peace》 2019年第4期34-43,共10页
In the year 2019,the overall situation of world peace and stability remains unchanged.The relationship between major powers is characterized by both increased confrontation and friction,as well as maintained competiti... In the year 2019,the overall situation of world peace and stability remains unchanged.The relationship between major powers is characterized by both increased confrontation and friction,as well as maintained competitive engagement and selective cooperation,and the bottom line of no military conflict and no war is still held between major powers.However,the international security situation in 2019 is full of chaos and frequent crises,which is highlighted in the further increase of global sources of turbulence and risk points,the more complex and severe regional security situation is,and the more difficult the global security governance will be.Political and social unrest in some countries is in danger of spreading to their whole region and even to the entire world. 展开更多
关键词 confrontation and friction security situation
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