lora protocol

4.3.3 If a data frame contains a data payload, the frmpayload must be encrypted before the mic is calculated.The encryption mechanism is based on the algorithm referred to by IEEE 802.15.4/2006 Annex b[ieee802154], using an AES key of length 128bits.By default, the LoRaWAN layer is the data encryption/decryption for all fport. If the application layer is convenient, you can also decrypt the data in addition to FPort 0 in the upper level of the LoRaWAN layer. As for which fport to the level beyon

stimulated, and Lora's low-power wide-area network technology is more quickly and more market-aware. Recently, the only company to Lora the largest empty parallel distance test, reached 21.5 kilometers, causing the industry's huge repercussions, customers have increased a lot. Witnessed that any technology can not fully occupy the market, NB-IoT will play a role in the development of the entire industry, and to some extent, NB-IoT and

data-bandwidth power supplies. Lpwan provides years of battery life and is designed to serve sensors in different environments that require a small amount of data to be sent dozens of times per hour over a long distance. key factors of Lpwan Network architecture communication distance low power consumption or battery life disturbance Robust network capacity (maximum number of nodes allowed in network) network encryption single or dual communication application services Diversity 4. What is LoRa

The rapid development of the Internet of things has put forward higher requirements for wireless communication technology, and the Lpwan (Low-power wide-area Network and low Power WAN), designed for low bandwidth, low power consumption, long distance, and heavily connected IoT applications, is also booming. Nb-iot and Lora are the typical representatives and the two low power WAN communication technologies with the most development prospects. These tw

Lora and Sigfox such as the ISM band network in the end can survive. How to compete with NB-IoT. Lora and Sigfox, NB-IoT are Lpwan networks, Sigfox use the ISM band, their own, many are private, and operators to establish a nationwide network to do their own operators, such as China Unicom and mobile; Lora also use the ISM band, this is the practice of old Mao cr

;Data storage and processing display: mainly includes data server, Application server, monitor large screen and other parts. It is mainly responsible for storing, analyzing and displaying the data returned by the front-end collection.Program Benefits★ Realize wireless Remote meter reading function, real-time, high efficiency, accurate, low cost;★ Support multi-center, multi-level functional department of synchronous data transmission, multi-level data display, convenient, intuitive;★ Has the sys

2. Telnet protocolThe Telnet protocol is a member of the TCP/IP protocol family and is the standard protocol and main way of Internet remote Login service. It provides users with the ability to perform remote host work on the local computer. Use a Telnet program (such as Putty) on the end user's computer to connect to the server. End users can enter commands in t

2017-02-10 reliable data transmission principle, reliable data transmission protocol, automatic retransmission request protocol, stop and wait protocol, redundant packet, bit alternation Protocol, sliding window protocol "Computer network-Top Down Method" (original book 6th

2017-02-11 structure reliable data transmission protocol, Sliding window protocol, bit alternation protocol, fallback N-Step protocol, and select retransmission protocol 1: Redundant data duplicate (packet), 2: Inverted count timer (countdown timer), 3: Bit alternating

equipment through the Internet.2, communication "refers to data communication only, that is, through the computer network system and communication system to achieve the end-to-end transmission." The communication "letter" refers to the information (information), the information carrier is the binary data, the data can be used to express the traditional media form of information, such as sound, image, animation and so on. "Communication" weighs on the means of transmission or use, from this poin

http://blog.csdn.net/heanyu/article/details/6202500 RTP (Real time Transport Protocol) RTP is a transport protocol for multimedia traffic on the Internet that is published by the IETF (Internet Engineering Task Force) as RFC1889 . RTP is defined as a one-to-many transmission, with the purpose of providing time information and implementing stream synchronization. Typical applications for RTP are built on U

RTP (Real Time Transport Protocol) RTP is a transmission protocol for multimedia data streams over the Internet.Rfc1889Release. RTP is defined to work during one-to-one or one-to-many transmission. It aims to provide time information and implement stream synchronization. Typical RTP applications are built on UDP, but can also work on TCP, ATM, and other protocols. RTP itself only guarantees the transmissio

The IP protocol is the most important protocol in the family of TCP/IP protocols, which provides unreliable, non-connected datagram transport services. So understanding IP protocols is critical to our learning network.IP headerImportant Field Introduction：4bit First ministerial degree: in 4 bytes, determines the IP head of the largest minister of 15*4=60, the general IP datagram header length of 20, at this

Label:IMAP (Internet Mail access protocol,internet) is formerly known as the Interactive Mail Access Protocol (Interactive mail, Access Protocol). IMAP was an email acquisition protocol developed by Stanford University in 1986. Its main role is that the mail client (for example, Ms Outlook Express) can obtain mail info

The similarities and differences between RTSP, RTMP, and HTTPCommon:1:RTSP RTMP HTTP is applied at the application layer.2: Theoretically RTSP rtmphttp can do live and on-demand, but generally do live with RTSP RTMP, do on-demand http. Video conferencing when the original SIP protocol, and now basically replaced by the RTMP protocol.Difference:1:http: Hypertext Transfer Protocol (FTP is a file Transfer

Reprint: http://easydarwin.org/article/Streaming/141.htmlThe similarities and differences between RTSP, RTMP, and HTTPCommon:1:RTSP RTMP HTTP is applied at the application layer.2: Theoretically RTSP rtmphttp can do live and on-demand, but generally do live with RTSP RTMP, do on-demand http. Video conferencing when the original SIP protocol, and now basically replaced by the RTMP protocol.Difference:1:http: Hypertext Transfer

Dark Horse programmer-protocol (protocol), dark horse-protocol------ Java training, Android training, iOS training, and. Net training. We look forward to communicating with you! ------- Can be used to declare a lot of methods (member variables cannot be declared) As long as a class complies with this Protocol, it is

Mobile 10657 SMS China Unicom 10655 SMS China Telecom 10659 SMS 1-hand direct connection port. Mobile CMPP protocol CMPP (China Mobile Peer to Peer) Chinese name: China Mobile Communication Internet Short Message Gateway Interface Protocol Note: This is the enterprise specification of China Mobile Communications Corporation. The specifications describe the types and definitions of messages between d

Today I'll focus on my view on the SLIP Protocol and PPP protocol on the link layer. Today should be written on the third day, for their own insistence point a praise.Slip agreement In fact not much, it is called Serial Line Imternet protocol, translated into Chinese is a serial Internet protocol. It is a low-speed ser

Both TCP and UDP are port-based protocols. TCP has links, and UDP has no links. The TCP protocol also drops packets (network problems, the data may be gone)The application is sent to the operating system's cache, and the operating system is removed from the cache, and once the data is lost, it is completely gone. TCP is reliable because the data in its own cache is emptied after it receives a confirmation message.How UDP works I took it out of my own