IEEE802.11s.pdf

是IEEE发布的802.11s的官方文档
The wireless local area network standard
IEEE 802.11 is the preferred solution for lowcost data services. Key to its success are the 2.4
and 5 GHz unlicensed bands. The transmit
power limitations imposed due to regulatory
requirements limit the range (coverage) that can
be achieved by WLANs in these bands. However, the demand for “larger” wireless infrastructure is emerging, ranging from
office/university campuses to city-wide deployments. To overcome the limitations of singlehop communication, data packets need to
traverse over multiple wireless hops, and wireless mesh networks are called for. Since 2004
Task Group S has been developing an amendment to the 802.11 standard to exactly address
the aforementioned need for multihop communication. Besides introducing wireless frame forwarding and routing capabilities at the MAC
layer, the 802.11s amendment brings new interworking and security. In this article, we provide
insights into the latest developments in 802.11s
and explain how the overall mesh concept fits
into the 802 set of networking standards.