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* Machnina Research 2016
Low Power Wide Area Networks
Low power is the first diﬀerentiator for LPWA technologies. Most people are familiar with the frequent recharging needed for phones that connect using traditional cellular technology. Conversely, IoT devices that use cellular for connectivity must either be line powered, have a built-in recharging mechanism or have daily (or in extreme cases weekly and thus costly) battery swaps.
Cellular and Wi-Fi/Mesh require a line power source. This severely limits the uses of such technology. But LPWA can be used for applications that last for years (not days or weeks) on a single battery.
This means that sensors can be placed and left alone in buildings, outdoor locations, and in any diﬀicult-to-access area, providing valuable data over a long period of time. This is in stark contrast to the always-tethered cellular connected M2M devices.
IOT Specific Network
Wide-area coverage means users don’t need to think about having a line-of-sight connection to a tower or access point. Wide-area coverage is, as the name states, in terms of area. LPWA means connectivity for all endpoints, or IoT devices, in a given coverage area. That means businesses can add more and diﬀerent devices as their business grows and needs change.
Lpwan Use Cases
Low Power Mesh Networks
Mesh Network A wireless mesh network (WMN) is a communications network made up of radio nodes organized in a mesh topology. The distributed network nature of the wireless mesh network with its simple configuration is ideal for implemented in the IoT networks to take advantage of its expanded range as well as keep the hardware design minimal using smaller network module. Such networks also are more robust in the harsh environment as the network are distributed with no single central point of failure.
The main difference between WMNs and star networks; WMNs are wireless networks, which have the ability of dynamically self-organizing and self-configuration, and with mesh connectivity automatically establishing among nodes in the network while the conventional star network has a star topology which means all the terminal nodes are connected to a single central point which connects to the upper level of the network.
WMNs can bring many advantages to the IoT networks, and the most prominent one is the versatility of the network. When using the infrastructure WMN structure, adding a new router requires only simply putting the new device straightly into the field within the range of the existing network. The capacity and range of the network expand without introducing more cables and connections. For the hybrid network, this process is even simpler. Placing the new IoT devices in the field where the old mesh network is covered, the new sensor just works. It is because of the auto-configuration feature of the network will expand the network automatically. Hence, the network structure would be simpler, and the price of covering a larger area, especially in the rural area without reliable network
everywhere could be much lower. Power consumption can also be significantly reduced when connecting remote IoT sensors or other devices to the network. The devices can only connect to closest mesh device instead of a distant central network hub, in the Hybrid case, it can even be a neighbouring node. This connects may make a chain of IoT devices, reducing the cost of power of the central hub to cover the most distant device. Apart from the scaling and cost advantages when setting up new networks, WMNs also provide a more robust network for all kinds of applications in the IoT-world when it comes to unlikely events such as nature disasters. Even when some part of the link is destroyed and several devices are out of the connection. The rest of the network is still self-connected and self-configured with a new network and works the same. So long as one of the new network component connected to the internet, the entire sub-network will stay connected, only losing the connection from the node that is disconnected, whereas, in the conventional networks, this means the coverage of the entire area is lost, cutting off the IoT service totally.
IOT Mesh Network
IOT Network Characteristics
Libelium designs and manufactures hardware and a complete software development kit (SDK) for wireless sensor networks so that system integrators, engineering, and consultancy companies can deliver reliable Internet of Things (IoT), M2M, and Smart Cities solutions with minimum time to market.
Libelium's versatile platform allows implementation of any Wireless Sensor Network, from Smart Parking to Smart Irrigation solutions.
The Libelium’s open wireless sensor platform is modular, easy to deploy and ready to integrate with third-party Cloud systems such as Microsoft, IBM, Indra, Esri, ThingWorx, or MQTT.
Over 2,000 developers from 115 countries in companies ranging from start-ups to universities to large international corporations have adopted Libelium’s hardware and software technology for projects in North America, Australia, Asia and Europe.
Commercial deployments include applications as varied as parking, traffic congestion, environmental monitoring, and precision agriculture.
Sensor Device for Developers
Waspmote is a sensor device specially oriented to developers. It works with different protocols (ZigBee, Sigfox, LoRa, Bluetooth, GPRS) and frequencies (2.4GHz, 868MHz, 900MHz) being capable of getting links up to 22km. It counts with an hibernate mode of 0.06uA which allows to save battery when it is not transmitting. More than 50 sensors already available and a complete open source IDE (API libraries + compiler) made really easy to start working with the platform.
More info: http://www.libelium.com/waspmote
Sensor Networks Made Easy
Waspmote Plug & Sense! line allows developers to forget about electronics and focus on services and applications. Now you can deploy wireless sensor networks in a easy and scalable way ensuring minimum maintenance costs. The new platform consists of a robust waterproof enclosure with specific external sockets to connect the sensors, the solar panel, the antenna and even the USB cable in order to reprogram the node. It has been specially designed to be scalable, easy to deploy and maintain.
More info: http://www.libelium.com/plug_&_sense
Connect Sensors to Cloud
Meshlium is a Linux router which works as the Gateway of the Waspmote Sensor Networks. It can contain 5 different radio interfaces: WiFi 2.4GHz, WiFi 5GHz, 3G/GPRS, Bluetooth and XBee/LoRa. As well as this, Meshlium can also integrate a GPS module for mobile and vehicular applications and be solar and battery powered. These features a long with an aluminium IP-65 enclosure allows Meshlium to be placed anywhere outdoor. Meshlium comes with the Manager System, a web application which allows to control quickly and easily the WiFi, XBee/LoRa, Bluetooth and 3G/GPRS configurations a long with the storage options of the sensor data received.
More info: http://www.libelium.com/meshlium