FIG. 1 presents a block diagram illustrating an example of communication among electronic devices according to some embodiments. Notably, radio nodes 110 can communicate LTE data frames or packets using LTE with an electronic device 112 (which is sometimes referred to as ‘user equipment’ or UE, such as a cellular telephone and, more generally, a portable electronic device). Again, while LTE is used as an example of a cellular protocol, the embodiments herein are not so limited. Moreover, radio nodes 110 may also communicate (via wireless or wired communication, such as Ethernet, in network 114) with each other and with computer 124 (such as a SAS).

As described further below with reference to FIGS. 2-4, one or more of radio nodes 110 may perform a communication technique by communicating with computer 124 via network 114. Using radio node 110-1 as an example, this radio node may provide a grant request to computer 124 to reserve a portion of a spectrum or bandwidth (such as a portion of the spectrum in a shared-license-access band of frequencies or another band of frequencies) for its use. For example, radio node 110-1 may request a grant to reserve 5, 10, 20, 40, 80, 100 or 150 MHz of spectrum in a particular geographic region in the CBRS from computer 124. In response, computer 124 may provide a grant response to radio node 110-1 with approval of a grant for the requested portion of the spectrum.