What is M2M Communications?
M2M communications is the networking of computing and non-computing devices (e.g. sensors, meters, security cameras) to capture event-related information and then transmitting that information to specialized servers and software to interpret and respond. Response can include actions that might trigger decisions either on an automated basis or through manual intervention. The event information being captured or the data acquired might be a door opening, motion sensing in a guestroom, temperature, light, inventory level, security information and location sensing at a property.

Significant growth in M2M expenditures is forecasted by many industry analyst firms. The Telecommunications Industry Association (TIA) predicts for the wireless devices revenues in the U.S. market to grow from $ 20.71 billion in 2009 to $22.82 billion by the year 2013. An estimate for the smart device shipments is for it to grow from 73 million units in 2008 to 430 million units by 2013. Wireless sensors networking equipment represents much of the growth. With the equipment prices coming down, more ubiquitous wireless coverage, applications developments the key benefit of M2M is being realized – the ability to conserve energy and operate a property in an environmentally responsible manner. 

Typical M2M Architecture
The typical architecture would include a smart device, short-range network, a gateway, wide area network and a server for the application. The short-range network might use wireless technologies such as Zigbee, Wi-Fi or RFID and the wide area network might use cellular technologies, satellite communications, WiMax or any form of wired network. A reference architecture diagram from the European Telecommunications Standards Institute (ETSI) is shown in the figure to the right.  

The framework of M2M communications might include the four stages of data acquisition by a device, transmission of that data over a network, data assessment by an application and then lastly response to the interpreted results. A smart device is defined as one that is digital, active, networked, configurable and is capable of performing certain functions autonomously. Smart devices allow for monitoring and control as well external service access and execution. The data acquired by a smart device flows over a network and through a gateway to a system that might consist of a server and an application. The system processes and analyzes the data collected and then determines the follow-up and/or corrective actions required. This whole process might take place in a totally autonomous manner.       
      
Standards Developments in Process
Many standards development groups are working diligently to define the set of standards that will be required due to the burgeoning demand for M2M devices and the enormous amount of data that will be acquired by them. The TIA has created a new standards group TR-50 to study various use case examples of M2M applications and determine commonality in developing the appropriate standards that can be universal in nature. The Institute of Electrical and Electronics Engineers (IEEE) has embarked on a standards effort within its 802.15 group as well. The National Institute of Standards (NIST) has created a Smart Grid group. The European Telecommunications Standards Institute (ETSI) has a working group to develop standards for M2M. So there much work going on currently to facilitate interoperability among devices and across networks.           

Hospitality Applications
Most of the M2M deployments have been in the utility, healthcare and transportation industries. Hospitality implementations have been taking place by way of guestroom automation, energy management, point-of-sale and video surveillance applications. Some hospitality applications of note are as below:

· Video surveillance applications with well integrated backend cellular wireless systems that can alert a centralized security desk as well as send pictures to the local fire and police departments based on pre-set thresholds of motion and sounds. 

· Use in point-of-sale applications with cashless payments from vending machines, parking garages and business centers enabling mobile commerce and enhancing revPAR to the hotel.

· Utility meters, electric and gas, on the hotel property to monitor and control energy use by the various locations within the hotel and to conserve wherever possible based on occupancy and use of facilities.