FIGS. 10-16 and the following information are provided as being illustrative of further considerations and possible implementation details relating to the method of FIG. 9, and are not intended to be limiting to the disclosure as a whole. In particular, FIGS. 10-16 may be illustrative of various possible coexistence considerations relating to 3GPP based communication systems in which LAA can be used to provide one or more cellular carriers on an unlicensed frequency band such as the 5 GHz ISM band. Numerous variations and alternatives to the details provided herein below are possible and should be considered within the scope of the disclosure.
As previously noted herein, a cellular base station intending to perform cellular communication on an unlicensed frequency channel may perform a LBT procedure, and may possibly also transmit a reservation signal, prior to actually performing the cellular communication, at least according to some embodiments. FIG. 10 is a timing diagram illustrating aspects of such a process, as it might be performed in the absence of any other devices contending for the medium.
