The Internet of Things (IoT) involves different kinds of continuously evolving technology, allowing for many connectivity options for connected device manufacturers. Each of these options has a range of advantages and disadvantages that must be weighed together. This article will help you evaluate the best IoT wireless technology solution for your business.
Wireless technology is a method of connection within an IoT system that includes sensors, platforms, routers, applications, and other systems. Each option has trade-offs between power consumption, bandwidth, and range. At a high level, there are standard wireless options like cellular (3G, 4G, 5G) and WiFi, and there are long-range options like LoRaWAN and LPWAN. Connected device companies should understand the basics of the top IoT technologies to determine the best wireless technology option for their needs.
Before we get into how to decide which wireless technology is right for your business, let’s look at the main options available today. These will meet the requirements of most use cases.
One of the best-known types of IoT wireless technology is cellular, particularly in the consumer mobile market. Cellular networks provide reliable broadband communication that supports everything from streaming applications to voice calls. Since cellular is so well established, it offers very high bandwidth. Carriers offer Cat-M1 and NB-IoT, cellular options designed to compete with novel LPWAN technologies.
Cellular works well in low power environments, especially with something like Cat-M1. And for non-mobile applications where power isn't a factor, cellular is also an excellent choice. With the introduction of 5G’s ultra-low latency, wireless can effectively support the needs of things like time-sensitive industrial automation, real-time delivery of medical data, and public safety surveillance video. It will be exciting to watch this unfold.
Another well-known wireless technology in consumer circles is Bluetooth. This wireless personal area network (WPAN) is a short-range communication technology with optimization for power consumption (Bluetooth Low Energy) positioned to support small-scale consumer IoT applications.
Bluetooth and BLE are used for everything from fitness and medical wearables like smartwatches to smart home devices like home security systems, where data is communicated to smartphones. They work quite effectively with very short-range communications.
WiFi has played a critical role in providing high-throughput data transfer in homes and for enterprises — it’s another well-known IoT wireless technology. It can be quite effective in the right situations, though it has significant limitations with scalability, coverage, and high power consumption. Due to newer enterprise security practices, IoT devices are discouraged from being added to the same primary Wi-Fi networks as traditional employee computers or phones. In Zipit's experience, this has led more OEMs to leverage other technologies like cellular to both mitigate these security concerns as well as speed up deployment efforts.
The high energy requirements often make WiFi a poor solution for large networks with battery-operated sensors, such as smart buildings and industrial use. Instead, it’s more effective with devices like smart home appliances. The latest WiFi technology, WiFi 6, does offer improved bandwidth and speed, though it’s still behind other available options. And it carries security risks that other options don’t.
Low power wide area networks (LPWAN) provide long-range communication using small, inexpensive batteries. This family of technologies is ideal for supporting large-scale IoT networks where a significant range is required. However, LPWANs can only send small blocks of data at a low rate.
LPWANs are ideally suited for use cases that don’t require time sensitivity or high bandwidth, like a water meter for example. They can be quite effective for asset tracking in a manufacturing facility, facility management, and environmental monitoring. Keep in mind that standardization is important to ensure the network’s security, interoperability, and reliability. Although newer LPWAN is gaining popularity.
LoRaWAN is a powerful and emerging technology. It’s similar to Bluetooth, but it offers a longer range for small data packets with low power consumption. LoRaWAN manages the communication frequencies, power, and data rate for all connected devices. So, LoRaWAN sensors communicate to a cellular gateway to send data to the cloud. It does require a back-haul transport, and partners like Zipit can provide the necessary cellular support.
The use cases for LoRaWAN are similar to those for LPWAN where there aren’t high bandwidth requirements or time sensitivity for the transfer of data. But LoRaWAN differs in several ways. It’s is a point-to-point wireless connection that does not have direct connection to the Internet, whereas LPWAN is a direct-to-internet connection. LoRaWAN requires a gateway to packet forward the data to the final destination in the cloud, and that gateway is typically a LoRa to Cellular gateway.
Since the range is high for LoRaWAN, sensors can be widely deployed over a large area. These sensors are simple and designed for small data packets that transmit infrequently, so it’s well-suited for irrigation management, leak detection, logistics and transportation management, and asset or equipment tracking. Keep your eyes on LoRaWAN as it continues to evolve.
It’s important to understand the different IoT wireless options available to help you know what option(s) you may want to consider for your business. There really isn’t a single best option — it depends on your specific needs.
Additionally, some of these technologies may be used effectively together for a more robust solution. A great example is the Smardii sensor created for individuals caring for patients with incontinence. The sensor is applied to the incontinence protection and communicated with a LoRaWAN to a cellular gateway to send data to the cloud and the caregivers so they can act on the data. It’s a great example of a novel approach fueled by this technology to improve care.
To choose the right IoT wireless technology, you’ll evaluate the options available based on your specific needs. Weigh the trade-offs between power consumption, range, and bandwidth and prioritize the importance of each for your product. Some of what you’ll consider with this analysis are aspects like data range, battery size, cost, transmission distance, carrier-deployed vs. customer-deployed, and where it gets deployed, firmware updates, and more.
Here are some questions to help get you started to make the right decision for your business:
Answering each of these questions will help paint a fuller picture of which option(s) you may want to consider.
You don’t have to wade through the complex and ever-evolving IoT market on your own. Zipit has the expertise to navigate the available technology options to help you make the right decision for your business. We keep up-to-date on the latest technologies, so you don’t have to. And we help you all along the way from concepting and design to implementation and monitoring. So, give us a call today, and let’s see what we can do together.
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