Here's a good presentation on RTLS standards.
Both the FCC and China's State Radio Regulatory Commission are pushing for international RTLS standards.
Last month, the US Dept. of Homeland Security unveiled HSIN-CI, the Homeland Security Information Network for Critical Infrastructure. HSIN-CI is an unclassified network, which immediately provides the Departmentís Homeland Security Operations Center with one-stop 24/7 access to a broad spectrum of industries, agencies and critical infrastructure across both the public and private sectors. This certainly requires substantial local interface which we need to better understand. The network is being piloted on a local basis in Seattle, Dallas, and Indiana.