Skip to main content

4 Upcoming New Protocols in Internet-of-things

4 Upcoming New Protocols in Internet-of-things
#4 Upcoming New Protocols in Internet-of-things:
4 New Protocols recently discussed in IoT conference:
  • 6LoWPAN for embedded device networking
  • The Constrained Access Protocol (CoAP) for low-power device communication.
  • The Time Synchronized Mesh Protocol (TSMP) for saving power in environments with limited wireless bandwidth.
  • RPL, the IPv6 Routing Protocol for Low power and Lossy Networks, for defining and changing routes among devices.
Another downside is the lack of Quality of Service (QoS). Making sure that messages are delivered is even more important in the IoT world than it was in the instant messaging world. If your alarm system doesn’t receive the message to turn itself on, then that vacation you’ve been planning could easily be ruined.

What is CoAP
CoAP is a simple request/response protocol (again, very similar to REST) that follows a traditional client/server model. Clients can make GET, PUT, POST, and DELETE requests to resources. CoAP packets use bitfields to maximize memory efficiency, and they make extensive usage of mappings from strings to integers to keep the data packets small enough to transport and interpret on-device. Aside from the extremely small packet size, another major advantage of CoAP is its usage of UDP; using datagrams allows for CoAP to be run on top of packet-based technologies like SMS.

One of the downsides of CoAP: It's a one-to-one protocol. Though extensions that make group broadcasts possible are available, broadcast capabilities are not inherent to the protocol. Arguably, an even more important disadvantage is the lack of a publish-subscribe message queue.

The major advantages of MQTT are the publish-subscribe message queue and the many-to-many broadcast capabilities. Using a long-lived outgoing TCP connection to the MQTT broker, sending messages of limited bandwidth back and forth is simple and straightforward. 

The downside of having an always-on connection is that it limits the amount of time the devices can be put to sleep. If the device mostly sleeps, then another MQTT protocol can be used: MQTT-S, which works with UDP instead of TCP.

Another disadvantage of MQTT is the lack of encryption in the base protocol. MQTT was designed to be a lightweight protocol, and incorporating encryption would add a significant amount of overhead to the connection. You can add custom security at the application level, but that may require a significant amount of work.

What is XMPP

The primary advantage is XMPP's decentralized nature. XMPP works similar to email, operating across a distributed network of transfer agents rather than relying on a single, central server or broker (as CoAP and MQTT do). As with email, it’s easy for anyone to run their own XMPP server, allowing device manufacturers and API operators to create and manage their own network of devices. And because anyone can run their own server, if security is required, that server could be isolated on a company intranet behind secure authentication protocols using built-in TLS encryption. 

Unfortunately, there are a few disadvantages to XMPP as well. One of the largest flaws is the lack of end-to-end encryption. While there are many use cases in which encryption may not yet be necessary, most IoT devices will ultimately need it. The lack of end-to-end encryption is a major downside for IoT manufacturers.

All CoAP messages can be marked as either “confirmable” or “nonconfirmable,” serving as an application-level QoS. While SSL/TLS encryption isn’t available over UDP, CoAP makes use of Datagram Transport Layer Security (DTLS), which is analogous to the TCP version of TLS. The default level of encryption is equivalent to a 3,072-bit RSA key. Even with all of this, CoAP is designed to work on microcontrollers with as little as 10KB of RAM.

3 Real time Protocols currently using:
XMPP Protocol -The eXtensible Messaging and Presence Protocol (XMPP) is a TCP communications protocol based on XML that enables near-real-time exchange of structured data between two or more connected entities. Out-of-the-box features of XMPP include presence information and contact list maintenance. While both features were originally designed for instant messaging, they have obvious applications for IoT. Due in part to its open nature and XML foundation, XMPP has been extended for use in publish-subscribe systems -- again, perfect for IoT applications. There are several major advantages to using XMPP as your IoT communications protocol.

CoAP Protocol -The Constrained Application Protocol (CoAP) was specifically developed to allow resource-constrained devices to communicate over the Internet using UDP instead of TCP. Developers can interact with any CoAP-enabled device the same way they would with a device using a traditional REST-based API. CoAP is particularly useful for communicating with low-power sensors and devices that need to be controlled via the Internet. 

MQTT Protocol -Message Queue Telemetry Transport (MQTT) is a publish-subscribe messaging protocol. Similar to CoAP, it was built with resource-constrained devices in mind. MQTT has a lightweight packet structure designed to conserve both memory usage and power. A connected device subscribes to a topic hosted on an MQTT broker. Every time another device or service publishes data to a topic, all of the devices subscribed to it will automatically get the updated information. 

You Might Like


Popular posts from this blog

Blue Prism complete tutorials download now

RPA blue prsim tutorial popular resources I have given in this post. You can download quickly. Learning Blue Prism is really good option if you are learner of Robotic process automation. The RPA is also called "Robotic Process Automation"- Real advantages are you can automate any business process and you can complete the customer requests in less time.

The Books Available on Blue Prism 
Blue Prism resourcesDavid chappal PDF bookBlue Prism BlogsVideo Training
RPA training The other Skills you need
Basic business skills and Domain skills are more than enough to be successful in this automation careerScripting languages like Perl/JSON/JavaScript/VBScript.  The interesting point is learning any RPA tool is not a problem. You can learn tool quickly. The real point is how quickly you apply your knowledge to implement automated tasks is important.

Also read
Robotic RPA Software developer skills you needBlue Prism tutorials download to learn quicklyPopular RPA tools functionality differe…

Three popular RPA tools functional differences

Robotic process automation is growing area and many IT developers across the board started up-skill in this popular area. I have written this post for the benefit of Software developers who are interested in RPA also called Robotic Process Automation.

In my previous post, I have described that total 12 tools are available in the market. Out of those 3 tools are most popular. Those are Automation anywhere, BluePrism and Uipath. Many programmers asked what are the differences between these tools. I have given differences of all these three RPA tools.

BluePrismBlue Prism has taken a simple concept, replicating user activity on the desktop, and made it enterprise strength. The technology is scalable, secure, resilient, and flexible and is supported by a comprehensive methodology, operational framework and provided as packaged software.The technology is developed and deployed within a “corridor of IT governance” and has sophisticated error handling and process modelling capabilities to ensu…

Robotic RPA Software developer skills you need

Robotic process automation is an upcoming and becoming most popular skill. As I said there are three popular tools. To become proficient in any one of the tool is really good to get a job in Developer role.
To get a job in this line, I found in my research that some programming skills and Hand-on training on any one of the tools is required. Also, try to to know differences in other popular rpa tools.

Most people are asking experience in tools like Automation anywhare, Blue Prism and Uipath. But, you cannot be proficient in all. So just know what are the differences. Ok...
You may ask a question like how to know. First join one good coaching institute and learn one tool perfectly. And start taking online training. Really good for you. Whatever you are lacking quickly you can learn online way.

To learn Uipath try here. Also, you can learn Automation anywhere tool online way.

The following are the list of IT skills commonly asking:
Automation anywhere/Blue Prism/Uipath.Net/C#/Java/SQL ski…