PacketHop this week unveiled the first commercial implementation of the draft IEEE 802.11s wireless-LAN mesh standard.

The Menlo Park, Calif., software vendor is betting that the draft standard is stable enough, and that wireless mesh networks are attractive enough, to draw OEM customers. Once embedded in mobile clients and wireless access points, 802.11s will let these devices discover each other and automatically set up their own wireless infrastructure, using their 802.11 radios. The idea is similar to what Bluetooth devices do today, except over a larger area and with more numerous nodes and clients.

A mesh uses routing algorithms to guide packets through interconnected nodes, dodging around failures and picking an optimal path for packets. Applied to 802.11 WLANs, mesh makes for a more resilient network and eliminates the need to cable every access point to an Ethernet switch.

That's not all, however. A standard mesh protocol in theory will not only let different brands of access points interoperate, but also let any other WLAN-equipped device -- notebooks, high-definition TVs, smartphones, set-top boxes, to name just a few --  join to form an instant wireless infrastructure. The IEEE 802.11s Task Group is expected to ratify the final standard in late 2009, according to Glenn Gottlieb, head of business development for PacketHop.

PacketHop will offer software, a chipset and reference design board. The 802.11s stack is in beta-test, but is available for sampling. The vendor plans commercial shipments in July 2008.

Wireless mesh isn't new, but it's always been proprietary and generally focused on outdoor networks. (Compare wireless mesh products.)

Strix introduced in 2003 an indoor mesh WLAN product line, but changed its focus to products for municipal and other outdoor mesh networks. Other early outdoor mesh vendors included BelAir Networks, Firetide and Tropos Networks, eventually followed by Motorola, Nortel, and finally Cisco. Much of the early rationale for the 802.11s standard has been in terms of extending outdoor WLANs.

PacketHop, too, is shifting gears from its original focus on peer-to-peer client wireless-mesh software, mainly for public-safety and first-responder applications. With that original software, wireless devices, including laptops and handhelds, could find and connect to each other, with packets hopping through multiple nodes to reach a conventional WLAN access point, router, or other gateway. With backing from several venture funds, including U.S. Venture Partners, Mayfield, ComVentures, and GF Private Equity Group, PacketHop originally was a spin-off of SRI International, a nonprofit research and technology-development organization, based in Menlo Park, Calif. In June 2007, SRI acquired PacketHop.