The Wi-Fi Alliance today announced it has begun certifying Wi-Fi Direct products, a technology similar to Bluetooth, for device-to-device connections.
Wi-Fi Direct makes it easy for mobile phones, cameras, printers, PCs, and gaming devices to connect to each other, transfer content and share applications, without an access point, says the Alliance.
CERTIFIED Wi-Fi Direct products define a new way for Wi-Fi devices to connect to each other. In many cases it only requires the push of a button. Connections work at typical Wi-Fi speeds and range, are protected by WPA2-certified security protocols, and including WMM Quality of Service mechanisms.
- Atheros expects to have a full line of XSPAN multi-stream 11n and Align single-stream 11n products that are Direct CERTIFIED before the end of 2010. One innovative feature of Direct Connect, known as Direct Access Point, essentially turns a mobile phone into a hotspot by sharing its 3G/4G Internet connections with other devices.
- Broadcom today announced their BCM43224 dual-band 802.11n 2×2 MIMO PCIe half mini card has been selected for the Wi-Fi CERTIFIED Wi-Fi Direct test suit.
A camera with Wi-Fi Direct could communicate via Wi-Fi to a digital picture frame or printer, uploading picture data over the same range of existing Wi-Fi of about 200 yards at speeds of up to 250 Mbps, according to Wi-Fi Alliance CEO Edgar Figueroa. Only one device in a pair of devices needs to have Wi-Fi Direct software installed, and the peer-to-peer sharing can be initiated with the press of a button or input of a personal identification number (PIN), Figueroa said.
The Wi-Fi Alliance claims it delivers a better user experience than Bluetooth. Moreover, Wi-Fi is already widely included in handsets, consumer electronics, and other devices, so there is no need for an additional radio. Wi-Fi has the speed, range, and security features, while easily working in traditional Wi-Fi networks as well.
With Wi-Fi Direct, you do not need an access point or internet connection – your personal Wi-Fi network goes with you wherever you go. ComputerWorld notes that Rob Enderle, a wireless analyst at Enderle Group, said the concept of Wi-Fi Direct is not without issues.
From a security standpoint, he warned that any computer could become an access point. “If you have had problems with rogue access, oh boy, watch out…. You may need to rethink your security procedures,” Enderle said. A user with Wi-Fi Direct would need to enable the security separately and, if not, could be vulnerable.
Wi-Fi CERTIFIED Wi-Fi Direct device will be able to make device group connections with existing 802.11 a/g/n Wi-Fi CERTIFIED gear. The Wi-Fi Direct certification program does not require new hardware to operate, so some vendors may offer software upgrades.
Wi-Fi Alliance member companies began implementing the standard in mid-2010, and are currently certifying products for interoperability.
Meanwhile, the Bluetooth Special Interest Group has finalized the Bluetooth 4.0 spec. Hardware supporting the standard is expected to reach the market in late 2010 or early 2011.
The Bluetooth SIG completed Bluetooth Version 4.0 this summer. Bluetooth 4.0′s main feature is a low energy mode. It uses as little as 10 percent of the energy used by Classic Bluetooth devices. Bluetooth 4.0 is expected to enable devices like:
- Fitness monitors, that record your levels, heart rate, weight and more
- Health sensors, that collect pulse, temperature, and blood glucose level, then automatically send the information to your doctor.
- Watches, that let you control wireless headsets, mobile phones, and other portable devices.
“Many PCs and smart phones have the potential to enhance their wireless features with the use of Bluetooth technology, yet we see these key features being crippled time and time again,” said Michael Foley, executive director of the Bluetooth SIG.
Broadcom announced that it has gained Bluetooth 4.0 certification for its system-on-a-chip solutions. The new Bluetooth 4.0 standard uses less power and costs less, while providing better range.
Bluetooth v4.0 rolls three specifications into one. Classic Bluetooth, Bluetooth low energy, and Bluetooth High Speed technology can be combined or used separately in different devices. Mobile phones and PCs, which support the widest range of uses, will utilize the full Bluetooth 4.0 package, with Classic, low energy and high speed technology running side by side.
Bluetooth, commonly used in cell phones, sends information within your own personal space, which is called your Personal Area Network or “PAN”. The most common implementations of the technology transmit voice and data at distances up to 10 meters (33 feet) using the 2.4 GHz band.
Bluetooth Version 3.0 + HS was adopted by the Bluetooth SIG on April 21, 2009. It supports theoretical data transfer speeds of up to 24 Mbit/s, though not over the Bluetooth link itself. Instead, the Bluetooth link is used for negotiation and establishment, and the high data rate traffic is carried over a colocated 802.11 link.
Other low power wireless solutions include ZigBee, based on the IEEE 802.15.4 radio standard. It integrates a mesh networking protocol. Other standards include Insteon (for connecting lighting switches and loads without extra wiring) and Z-Wave (optimized for low-overhead commands), which are often used in home automation.
These standards achieve low power by means of rapid turn-on from deep sleep, followed by a fast send and acknowledgement process. These radios can operate at 2.4GHz, 915MHz or 868MHz, although most use the 2.4GHz band. Unlike Bluetooth, the 802.15.4 standard is not normally frequency agile.
According to ABI Research, 82 million Wi-Fi-enabled portable consumer electronics, 262 million notebooks/netbooks/media tablets and 216 million Wi-Fi enabled handsets are set to ship this year. Combined, these three categories are projected to grow at a compound annual growth rate of 26 percent from 2009 to 2014.
Cellular M2M (machine-to-machine) connections are expected to exceed 297 million in 2015. In the latest update to ABI Research’s forecasts, the 2009 forecast of about 225 million connections by 2014 has also been raised to 232.5 million.
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