M2M stands for ‘machine to machine’. It is a communication methodology by which devices interact and exchange information with each other. M2M communication can either be wired or wireless. An example of M2M communication is a weather station which has many sensors to take environmental data. This data is then transmitted to a computational device that generates a forecast report based on available inputs.
Cellular networks of present digital era are entirely based on M2M communication in which a call dialed from a mobile phone is first transmitted to the nearest BTS (base transceiver station). BTS forwards the call to MTS (main transceiver station) and then MTS communicates with satellite to transmit the call to the transceiver stations of the called user.
One key advantage of M2M communication is remote control and monitoring of devices which allows distant actuation of programmed controls without any human intervention. It also helps in the identification of any fault or abnormal operation situation of interconnected devices enabling user to arrange replacement spares timely and carryout corrective measures promptly. M2M communication is also useful in planning preventive maintenance cycles of the interconnected devices.
Nowadays, all the heavy machineries (power generators, earth-moving vehicles etc.) are equipped with satellite communication modules that integrate the critical operational data of the equipment and transmit it over satellite communication system to a centralized server where all this data is recorded and analyzed. This helps owner to centrally monitor his equipment operations, ensure that their critical operational parameters are within defined limits, locate the fleet within defined geographic boundaries and manage the equipment utilization effectively, giving them near-zero downtime performance.
M2M Communication Protocols:
Communication protocol is a channel over which two or more devices interacting with each other exchange information. Each communication protocol employs a different technique of encrypting and decrypting the data to be transferred between sender device and the receiver device.
Let’s have a look of commonly used M2M communication protocols:
BITXml: This protocol is available as a freeware, which means it can be publicly used without any authorization or paid subscription. This protocol implements communication stack references based on Open Systems Interconnection (OSI) model for exchange of information between connected devices.
BITXml protocol comprises of:
- BITXml Controller which interprets the available data and based on analysis, sends action command to the connected devices.
- BITXml gateway which is basically a software application that works as a translator of BITXml language into a format which can be understood by the connected devices.
- I/O Ports which serve as a physical connection between BITXml Controller / gate way and the devices to be monitored and controlled.
M2MXml: This is another Xml based freeware communication protocol which is developed with an intention of simplify M2M interfacing and establish an open-standard which can be followed by M2M software programmers as well as device manufacturers by inclusion of Java application programming interfaces.
STOMP: stands for steaming (or simple) text oriented messaging protocol which enables communication between messaging brokers over an interoperable point to point wire channel. Communication between STOMP client and messaging brokers is carried out via several commands.
Requirements of M2M Communication:
The first and foremost requirement of M2M communication is that M2M gateways and applications shall be compatible with each other over available means of communication like GPRS, GPS, IP etc. Connected devices shall have provision of peer to peer communication. The M2M system shall support anycast, unicast, multicast and broadcast communication modes. Network access and messaging schedules shall be managed by the system for effective utilization of the communication channel. The system shall be capable of routing the information through optimized communication paths minimizing networking costs, transmission delays and delivery failures. Applications requesting reliable delivery receipts shall be reported for any delivery failures. The M2M system will ensure integrity checks of connected devices and gateways. The system shall handle the communication based on assigned priority levels. High priority messages may interrupt flow of on-going low priority communication. The M2M system including devices and gateways shall be able to time stamp the events with accuracy and security.
M2M communication is revolutionizing the present era more towards operations with little or no human interface. It is helping business to enhance their efficiency and increase their productivity with a continuous single ended control of plant equipment. As an application, M2M is a promising prospect which will benefit to both telecom operators and vendors. Telecom operators will utilize this opportunity to overlay current user services network with low-bandwidth M2M services. Manufacturers and suppliers will maximize their business prospects by selling both M2M-capable devices, and from the network expansion which will eventually become a necessity due to increased throughput.
Want to Learn more about M2M Communication?
If you want to explore Space technology, broadcast, IT/ICT and telecommunications advancements then please register for the 3rd GLOBAL SATSHOW, an annual exhibition and summit dedicated to satellite industry.
Technology geeks, industry experts and entrepreneurs will be attending the event to discuss upcoming developments and trends driving the global market. Excellent networking opportunity and the illustrious Satellite Industry Leader Awards add vibrancy to this principal event.
Join 3rd Global SatShow and participate in Shaping Future Communications.