Wavenis
Encyclopedia
Wavenis Wireless Technology is a 2-way Wireless
Wireless
Wireless telecommunications is the transfer of information between two or more points that are not physically connected. Distances can be short, such as a few meters for television remote control, or as far as thousands or even millions of kilometers for deep-space radio communications...

 connectivity platform dedicated to serving M2M
Machine to Machine
Machine-to-Machine refers to technologies that allow both wireless and wired systems to communicate with other devices of the same ability...

 applications. The main requirements in today's data-centric M2M industry are quite different from broadband and hi-speed Internet connections, and generally focus on providing ways to transmit small amounts of data wirelessly on a regular but non-permanent basis. Many M2M solutions are installed in places where access to electricity is not an option, so ultra-low-power consumption is a key feature for wireless M2M technologies, often with a requirement to provide multi-year operation in battery-powered devices such as utility meters and social alarms. Furthermore, a high link budget is required to provide acceptably long-range connections in a variety of dense urban environments as well as widespread rural areas.

Wavenis was created as a proprietary technology by Coronis Systems in 2001. In 2008, an initiative was undertaken to propagate the technology as an industry standard. The The Wavenis Open Standard Alliance Wavenis-OSA was created to manage and govern the technology moving forward. The alliance has 20 active members.

Diverse markets

Wavenis features ultra-low-power and long range wireless connectivity specifically for wireless sensor networks (WSN) in which communication requirements and energy autonomy generally present conflicting requirements. Several million Wavenis-based devices have been deployed across many applications such as Telemetry
Telemetry
Telemetry is a technology that allows measurements to be made at a distance, usually via radio wave transmission and reception of the information. The word is derived from Greek roots: tele = remote, and metron = measure...

, industrial Automation
Automation
Automation is the use of control systems and information technologies to reduce the need for human work in the production of goods and services. In the scope of industrialization, automation is a step beyond mechanization...

, Advanced Metering Infrastructure (AMI), Automatic meter reading
Automatic meter reading
Automatic meter reading, or AMR, is the technology of automatically collecting consumption, diagnostic, and status data from water meter or energy metering devices and transferring that data to a central database for billing, troubleshooting, and analyzing.This technology mainly saves utility...

 (AMR), utility meter monitoring, home comfort, alarms, home healthcare, lighting and access control, cold-chain monitoring and active RFID applications.

Diverse requirements

Although the specific technical demands vary from market to market, Wavenis technology is designed for ultra-low-power energy consumption and long-range transmission of small amounts of data and low traffic communications.

Wavenis operates in the major license-free ISM bands around the world and complies with following regulatory standards.

• 868 MHz (EU EN300-220) with strict duty cycle regulation
• 915 MHz (US FCC15-247, 15-249) with mandatory signal spreading
• 433 MHz as straightforward extension (with no duty cycle restriction)

While Wavenis maximizes the link budget to achieve the longest possible wireless range, the technology is not recommended for use in the 2.4GHz ISM band due to less efficient propagation conditions at the higher frequency.

Wavenis data rates are programmable, from 4.8 kbits/s to 100 kbits/s. Most Wavenis applications communicate at 19.2 kbits/s.

Benefits

Focusing on low data rate enables the use of a narrowband receiver, thus highly sensitive receivers that yield a high link budget. The result is wireless coverage that exceeds several hundred meters (LOS).

Long-range capability: high link budget

Maximizing the radio link budget between devices compensates signal attenuation indoors and outdoor, as well as for low antenna gain inherent to tiny footprint industrial designs and low-cost solutions. Then, maximizing link budget enables effective wireless links for hard-to-reach devices.

Highly sensitive receivers are specified to obtain acceptable operating range and last-mile coverage in the field, helping to avoid loading networks with dedicated repeater nodes. The Wavenis specification on receiver side is as follows:

• -110dBm sensitivity @ 19.2 kbit/s (50kHz bandwidth channel)

• -113dBm sensitivity @ 4.8 kbit/s (25kHz bandwidth channel)


Performance is achieved by combining data processing techniques such as fast Frequency-hopping spread spectrum
Frequency-hopping spread spectrum
Frequency-hopping spread spectrum is a method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver...

 (FHSS), Forward Error Correction
Forward error correction
In telecommunication, information theory, and coding theory, forward error correction or channel coding is a technique used for controlling errors in data transmission over unreliable or noisy communication channels....

 (FEC) with BCH
BCH code
In coding theory the BCH codes form a class of parameterised error-correcting codes which have been the subject of much academic attention in the last fifty years. BCH codes were invented in 1959 by Hocquenghem, and independently in 1960 by Bose and Ray-Chaudhuri...

(21,31), data interleaving
Interleaving
In computer science and telecommunication, interleaving is a way to arrange data in a non-contiguous way to increase performance.It is typically used:* In error-correction coding, particularly within data transmission, disk storage, and computer memory....

 (16x16 bytes matrix) to increase reliability and also contribute to power savings by maximizing the success of communications on the first attempt.

• In compliance with FCC15.247 (North America) and ETS300.220 (Europe) wireless regulations, link budget features :

> 113dB with output power of 0dBm (1mW)

> 124dB with output power of +14dBm (25mW)

> 137dB with output power of +27dBm (500mW)

See also

• Advanced Metering Infrastructure

Automatic Meter Reading
Automatic meter reading
Automatic meter reading, or AMR, is the technology of automatically collecting consumption, diagnostic, and status data from water meter or energy metering devices and transferring that data to a central database for billing, troubleshooting, and analyzing.This technology mainly saves utility...



• Track and Trace
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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