Description: ZigBee协议适应无线传感器的低花费、低能量、高容错性等的要求。Zigbee的基础是IEEE 802.15.4。但IEEE仅处理低级MAC层和物理层协议，因此Zigbee联盟扩展了IEEE，对其网络层协议和API进行了标准化。Zigbee是一种新兴的短距离、低速率的无线网络技术。主要用于近距离无线连接。它有自己的协议标准，在数千个微小的传感器之间相互协调实现通信。(The ZigBee protocol adapts to the requirements of low cost, low energy and high fault tolerance of wireless sensor. The basis of Zigbee is IEEE 802.15.4. But IEEE only handles low-level MAC layer and physical layer protocols, so the Zigbee alliance extends IEEE, standardization of its network layer protocol and API. Zigbee is a new wireless network technology with short distance and low rate. It is mainly used for close range wireless connection. It has its own protocol standard, which coordinates communication between thousands of tiny sensors.) Platform: |
Size: 10517504 |
Author:chark |
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Description: SSH 为 Secure Shell 的缩写,SSH 为建立在应用层和传输层基础上的安全协议。SSH 是目前较可靠，专为远程登录会话和其他网络服务提供安全性的协议。(SSH is the abbreviation for Secure Shell, and SSH is a security protocol based on the application layer and the transport layer. SSH is currently more reliable and provides security protocols for remote login sessions and other network services.) Platform: |
Size: 4240384 |
Author:橙熟 |
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Description: 《现代密码学:原理与协议》内容简介：密码学在确保数据的私密性和完整性，以及计算机网络的安全性方面扮演了关键角色。乔纳森·卡茨和耶胡达·林德尔所著的《现代密码学：原理与协议》一书提供了对现代密码学严格而又容易理解的介绍，关注形式化的定义、精确的假设以及严格的证明。(A brief introduction to modern cryptography: Principles and protocols: cryptography plays a key role in ensuring the privacy and integrity of data and the security of the computer network. The book "modern cryptography: Principles and protocols", written by Jonathan Katz and Yehuda Lindell, provides a strict and understandable introduction to modern cryptography, focusing on formal definitions, precise assumptions, and strict proof.) Platform: |
Size: 21599232 |
Author:lovebear |
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Description: 3GPP组织发布的卫星移动通信标准还停留在3G阶段。对卫星LTE系列标准的研究，如通信协议和流程，常使用网络仿真方式。对EPS系统、开源网络仿真工具NS一3中的LTE仿真模型LENA给出了简要介绍，重点讨论了LENA模型与真实LTE系统的差异，并针对卫星移动通信环境存在大时延、高误码、信道衰落有别于地面等特点，分析和总结了利用LENA模型进行星上LTE系统仿真需要完善之处，为研究和制定卫星I肛移动通信系统标准打下了基础。(The standard of satellite mobile communication released by 3GPP is still in the 3G stage. Research on satellite LTE series standards, such as communication protocols and flows
It often uses network simulation. The LTE simulation model LENA in the EPS system and the open source network simulation tool NS 3 is briefly introduced. The difference between the LENA model and the real LTE system is emphatically discussed. In view of the characteristics of the satellite mobile communication environment, such as large delay, high error code, and the fading of the channel are different from the ground, the LENA model is analyzed and summarized for the on-board LT. E system simulation needs improvement, which lays the foundation for studying and formulating the standard of I anal mobile communication system.) Platform: |
Size: 2376704 |
Author:xizeyi123 |
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Description: ZigBee协议适应无线传感器的低花费、低能量、高容错性等的要求。Zigbee的基础是IEEE 802.15.4。但IEEE仅处理低级MAC层和物理层协议，因此Zigbee联盟扩展了IEEE，对其网络层协议和API进行了标准化。Zigbee是一种新兴的短距离、低速率的无线网络技术。主要用于近距离无线连接。它有自己的协议标准，在数千个微小的传感器之间相互协调实现通信。(The ZigBee protocol adapts to the requirements of wireless sensor such as low cost, low energy and high fault tolerance. The basis of Zigbee is IEEE 802.15.4. However, IEEE only deals with low-level MAC and physical layer protocols, so the Zigbee alliance extends IEEE and standardized its network layer protocol and API. Zigbee is a new short distance and low rate wireless network technology. It is mainly used for close range wireless connection. It has its own protocol standard, and realizes communication between thousands of tiny sensors.) Platform: |
Size: 15783936 |
Author:叶晨叶晨 |
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Description: Venture into any bookstore today and you can find numerous books on internetworking covering a wide
range of topics from protocols to network design techniques. There's no question that internetworking has
become a popular field with the enormous growth of the Internet and the increasing convergence of voice,
video, and data. Cisco has built a very successful business selling the equipment that forms the network
infrastructure—by some accounts, Cisco has more than 85 percent of the market—and at the same time
has seen its Cisco IOS Software become a de facto industry standard. Yet, although plenty of material is
written about network design and the protocols IOS supports, very little information is available from
sources other than Cisco.
This lack of information is understandable—IOS is proprietary, after all—but it nevertheless leaves network
implementers at a disadvantage. During our experience helping design and troubleshoot IOS-based
networks, we've seen many cases where limited IOS architectural knowledge either contributed to a
problem or made it more difficult to solve. In addition, we collectively have answered countless numbers of
questions (and dispelled some myths) from bewildered Cisco customers about the workings of various IOS
features.
This book is an attempt to bring together, in one place, the wealth of information about the architecture and
the operation of IOS. Some of this information has been made public previously through forums, Cisco
presentations, and the Cisco Technical Assistance Center. Most of the information you cannot find in the
Cisco IOS documentation. Platform: |
Size: 2529335 |
Author:codebus23 |
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Description: The W5500 chip is a Hardwired TCP/IP embedded Ethernet controller that provides
easier Internet connection to embedded systems. W5500 enables users to have the
Internet connectivity in their applications just by using the single chip in which TCP/IP
stack, 10/100 Ethernet MAC and PHY embedded.
WIZnet‘s Hardwired TCP/IP is the market-proven technology that supports TCP, UDP,
IPv4, ICMP, ARP, IGMP, and PPPoE protocols. W5500 embeds the 32Kbyte internal
memory buffer for the Ethernet packet processing. If you use W5500, you can
implement the Ethernet application just by adding the simple socket program. It’s
faster and easier way rather than using any other Embedded Ethernet solution. Users
can use 8 independent hardware sockets simultaneously.
SPI (Serial Peripheral Interface) is provided for easy integration with the external
MCU. The W5500’s SPI supports 80 MHz speed and new efficient SPI protocol for the
high speed network communication. In order to reduce power consumption of the
system, W5500 provides WOL (Wake on LAN) and power down mode. Platform: |
Size: 1492601 |
Author:bezr41@gmail.com |
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