ISSC343 American Public Wireless Personal Area Network Discussion Response
Respond to the following four discussions with at least 100 words.
Student one:
Wireless personal area network (WPAN) are a good network to use if you looking to support a small are (30 meters) and don’t want to deal with the physical pesky wires and cables(p.162). So, one thing the book listed is smart homes. I see this definitely growing within WPANs as more and more consumers are upgrading their home technology. Your whole home can be integrated now from doorbell security, home security system, sprinkler system, thermostat controls, your refrigerator”¦I probably missed a few. With the growing number of devices you can use on a WPAN would the network size need to grow as well to support them?
There are two lower protocol standards used by WPANs Bluetooth and Zigbee. Bluetooth uses the IEEE standard 802.15.1 and Zigbee uses 802.15.4. Most wireless capabilities are now built into the device itself instead of using an external usb device. Bluetooth data rates depends on which version your device is capable of ranging from version 1.1-1.2 at 723kbps to version 4 at 24mbps.
Zigbee standard’s focus is on stationary devices and only true global standard to perform with low data rates ranging within 20-150kbps, little power and connect 30-150ft (p.174). Zigbee Allegiance uses a different variety of devices such as window shades, gas detectors, patient monitoring ect”¦Its devices differ from as they do not typically need to communicate for long periods. Although designed for short range/short term communication they can be operable in full mesh scheme.
IRda uses infrared. Because is requires devices to be within sight the Bluetooth technologies are replacing it since radio waves can overcome. However, where radiowave technology can’t be used IRDa is used. So, what one lack another technology can make up for. That’s the beauty of technology, right?
Reference
Olenewa, J. L. (2017). Guide to wireless communications. Australia: Cengage Learning.
http://www.irda.org/
-Beth
Student two:
a WPAN (Wireless Personal Area Network) are a variety of different short range communications between multiple devices. Two of the WPAN technologies are Bluetooth and ZigBee and they both have different purposes and work in different ways but both are a means to eliminate the need for a physical medium in a fairly low data transfer communication. Bluetooth uses the 2.4 GHz to send communications while frequency hopping in order to reduce interference with other devices allowing it to be a fairly reliable method of communication. The standard set for Bluetooth is 802.15.1 set by the IEEE (Institute of Electrical and Electronics Engineers). ZigBee like Bluetooth uses a low band RF signal but for the American region it uses 902-928 MHz, 868-868.6 in Europe, and 2.4-2.4835 GHz worldwide. By using DSSS (direct-sequence spread spectrum) ZigBee is able to reduce the amount of interference even when having multiple devices in close proximity. In both the American and European regions BPSK (Binary phase-shift keying) is used to modulate the signal while the 2.4 GHz signal is modulated using OQPSK (offset quadrature phase-shift keying). The primary benefit of ZigBee over Bluetooth is that while it does have a much lower data transfer rate it is much more reliable as a long term investment, ZigBee communications were made with the intention of being a reliable source of short range communications while laying dormant for an extended period of time, this principle has also led to it as having a much lower power consumption over Bluetooth which requires a constant connection to maintain the communications. IrDA is a vastly different technology when comparing it to Bluetooth and ZigBee as it doesn’t use radio frequency signals to communication instead opting for the use of infrared technology. This is a point and shoot technology that requires direct line of sight between the devices. The primary benefit to the use of IrDA is that it is a very physically secure method of communication and it has a very low BER (bit error rate).
Thank you,
-Matt
Student three:
Hi everyone,
Chapter 6 covers the High-Rate Wireless Personal Area Networks, IEEE 802.15.3 series if you will. The original standards were dropped due to lack of agreement in standards. Later 802.15.3b was developed along with 802.15.5 and 802.15.3c for wireless HD and mesh networking. Some examples of high-rate WPAN use would include wireless headphones, digital cameras or phones connecting to printers wirelessly, or even linking smartphones/tablets to smart TVs or projectors.
IEEE 802.15.3c (WirelessHD Consortium) enables the use high definition audio and visual to be transmitted from one device to another without wires, which is very different than Zigbee devices that transmit very simple commands. It can also stream multiple streams at once. In the MAC layer, stationary devices (such a
