On Wednesday, the National Telecommunications & Information Administration (NTIA) Commerce Spectrum Management Advisory Committee (CSMAC) took steps to facilitate the deployment of future fifth-generation (5G) commercial networks and the sharing of federal spectrum resources in the 5 GHz band by approving various recommendations offered by its five subcommittees. Comprised of spectrum policy experts from outside the federal government, the CSMAC advises the Assistant Secretary for Communications and Information at NTIA on a broad range of spectrum policy issues. In addition to encompassing 5G networks and the sharing of federal 5 GHz spectrum resources, the CSMAC subcommittee recommendations also cover (1) protocols for federal agency access to non-federal spectrum bands, and (2) spectrum priorities “for collaborative dynamic sharing internationally.”
With respect to the 5 GHz band, the CSMAC endorsed subcommittee recommendations that NTIA should “use different measurement techniques in different bands” to determine the viability of federal and non-federal spectrum sharing in the 5350 -5470 MHz and 5850-5925 MHz bands. The CSMAC also approved recommendations for the usage of “different measurement techniques in order to enable spectrum sharing” in these bands and that also urge the NTIA to “create a report that defines the measurement system requirements and architectures needed to successfully measure signals for different applications.” As it endorsed suggestions that the NTIA “further investigate techniques to augment the detectability and mitigation of transmissions from users and services that share federal spectrum” in the 5 GHz band, the CSMAC said the NTIA should also “reach out to the FCC” with the goal of establishing a collaborative process on that effort.
Meanwhile, on the subject of 5G networks, the CSMAC approved recommendations that urge the NTIA to “investigate the possibility” of leveraging duplexing and spectrum usage schemes to promote co-existence of 5G federal and non-federal systems. Along that vein, the CSMAC said NTIA should “consider a more transparent and consistent process” for determining interference criteria “which could be beneficial for ensuring effective sharing of . . . spectrum between federal and non-federal systems.” These and other recommendations will be discussed in greater detail at an August 1 CSMAC meeting at which NTIA is expected to offer its views.