LTE protocol doesn't assign IPs to user equipment

[trevorhardy]

By design in the LTE protocol, user equipment (cell-phones, smart meters,...) are not assigned an IP. (See ns-3 documentation.) Looking through helics-helper.cc, it appears that the HelicsHelper::InstallStaticSource, HelicsHelper::InstallStaticSink and HelicsHelper::InstallFilter methods all assume an IPv4 address will be available. This will not be true for most of the nodes of interest in an LTE network.