Emilie Meyer
Communicating with a Personal Area Network (PAN) involves interconnecting devices within an individual's workspace. PANs are used for data transmission between devices such as computers, smartphones, tablets, and personal digital assistants. They can be wireless or wired, with wireless PANs (WPANs) being more common. WPANs use low-powered, short-distance wireless network technologies such as Bluetooth, Wireless USB, NearLink, or Zigbee. Bluetooth WPANs, also called piconets, can have up to eight active devices in a master-slave relationship. Infrared devices can also be used to establish a PAN for remote control of TVs and other home electronics. USB connections are another way to connect devices to a computer within a PAN. While PANs are ideal for interconnecting devices within a person's workspace, they have limitations in long-distance data sharing and broadcasting to multiple devices.
| Characteristics | Values |
|---|---|
| Purpose | To inform potential rescuers, including emergency services and other craft in the area, of an urgent problem |
| Usage | Warranted when attempting urgent radio contact with a vessel that may be in danger or approaching a dangerous situation; can also be used to request non-life-threatening medical advice |
| Precedence | Less urgent than "mayday", which indicates "grave and imminent danger" |
| Communication Method | Radio, horn or whistle blasts, loud hailer |
| Maritime Agencies | Canadian and U.S. Coast Guards |
| Technology | A PAN is a personal area network for interconnecting devices within a person's workspace, providing data transmission and communication |
| Connection Type | Wired (e.g., USB, FireWire) or wireless (e.g., Bluetooth, IrDA) |
| Range | Wired PANs cover short connections, while wireless PANs have a limited range (typically up to 10 meters) |
| Power Consumption | Low-power wireless PANs are ideal for portable devices due to minimal energy usage |
| Data Transfer | Wireless PANs have slower data transfer rates due to short-range technologies |
| Broadcasting | Wireless PANs cannot broadcast messages to all devices simultaneously |
| Interference | Bluetooth and IrDA transmission can cause interference with radio signals |
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What You'll Learn
Wireless personal area network (WPAN)
WPANs are wireless versions of Personal Area Networks (PANs), which are computer networks that interconnect electronic devices within an individual's workspace. PANs can be used for communication among personal devices or for connecting to a higher-level network, like the internet, through a master device gateway. PANs are usually carried over wired interfaces like USB but can also be wireless, using technologies like IrDA, Wireless USB, Bluetooth, NearLink, or Zigbee.
WPANs are designed to be energy-efficient, making them suitable for battery-powered devices and applications where power conservation is important. They facilitate peer-to-peer communication, allowing devices to exchange data directly without intermediate infrastructure. WPAN technologies are integral to the Internet of Things (IoT) ecosystem, enabling seamless wireless communication between personal devices and within localized environments.
WPANs have a variety of applications, including wireless audio streaming, wireless printing, wireless mouse and keyboard connectivity, smart home devices, and more. They can operate on various frequency bands, including the 2.4 GHz ISM band and other licensed frequency ranges, depending on the technology used. Some examples of WPAN technologies include Bluetooth, Zigbee, Z-Wave, and Near-Field Communication (NFC).
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Wired PANs
A Personal Area Network (PAN) is a computer network that interconnects electronic devices within an individual's workspace. While wireless communication is more common in PANs, a PAN can also be wired. Wired PANs provide short connections between peripherals using wired technologies such as USB, FireWire, IEEE-1394 high-performance serial buses, or a Thunderbolt hardware interface. Wired PANs are ideal for connecting devices in the immediate vicinity of a user and their workspace.
In addition to providing data transmission between devices, Wired PANs can also be used to connect to a higher-level network or the Internet. In this case, one master device, such as a computer, takes on the role of a gateway to facilitate the connection to the wider network or the Internet. This allows devices that may not typically have Internet capabilities to access online resources and services.
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Bluetooth devices
Bluetooth technology allows for the creation of a Personal Area Network (PAN), which is a computer network that connects devices within an individual's workspace. Bluetooth PANs are wireless and are ideal for portable devices due to their low energy usage and low data transmission costs.
To set up a Bluetooth PAN, you can pair two Bluetooth-enabled devices, such as a smartphone and a laptop, so they can recognise each other and communicate directly. This is done by enabling Bluetooth on both devices and following the pairing process, which may involve entering a passkey. Once paired, the devices can share an internet connection through Bluetooth tethering.
For example, you can create a Bluetooth PAN between a payment terminal and an Android or iOS device. By connecting the terminal to the internet through the mobile device, you can facilitate payment transactions and exchange data between the two devices.
Bluetooth PANs have a limited range, typically within 10 meters, and are designed for low-power, short-distance wireless communication. They are commonly used for connecting personal devices, such as smartphones, computers, smartwatches, and Bluetooth-enabled peripherals like keyboards, headsets, and printers.
It's important to note that not all devices support Bluetooth PAN functionality, especially older models. When setting up a Bluetooth PAN, it is recommended to ensure device compatibility and follow specific instructions for pairing and connectivity, which may vary depending on the devices involved.
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Infrared devices
Infrared communication was previously used in television remote controls and the beam feature on early smartphones and PDAs. However, it has been largely replaced by radio-based technologies, such as Bluetooth. Infrared is still used in some niche applications, such as specific medical devices.
In the context of Personal Area Networks (PANs), infrared technology can be used to connect devices within a user's immediate vicinity, typically within a range of a few meters. PANs can be wireless (WPAN) or wired. Wireless PANs use technologies like Bluetooth and Infrared to connect devices, while wired PANs use connections such as USB and FireWire.
The Infrared Data Association (IrDA) has developed standards for WPANs that utilize infrared communication. Devices in a WPAN communicate with each other by broadcasting short-range signals. For example, a smartphone may use Bluetooth to connect to a car's audio system, or a wireless mouse may use a USB receiver to communicate with a laptop. WPANs offer mobility and convenience, allowing users to move around while staying connected.
In the gaming industry, the Game Boy Color featured a built-in infrared port, enabling wireless, line-of-sight data transmission. This allowed the Game Boy to send and receive infrared signals from other devices, such as TV remotes, Wiimotes, and household lamps. Infrared communication was utilized in certain games and accessories for the Game Boy, although it never gained widespread popularity.
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USB connections
Wireless PANs (WPANs) are also possible, with technologies such as Bluetooth, infrared, Zigbee, and UWB. Bluetooth is the most commonly used technology for WPANs. It is a low-power, short-range computer networking protocol that uses radio waves to connect devices. WPANs typically have a limited range, usually within a few meters.
Overall, USB connections provide a versatile option for creating a PAN, whether through wired connections directly between devices or through wireless USB for a WPAN.
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