The N TP's also transmit N different measurement RS. In some embodiments, one or more of the TP's each transmit multiple measurement RS's. In some embodiments, some measurement RSs are each transmitted by multiple TP's. In some embodiments, some TP's don't transmit any measurement RS.
In various embodiments, other sets of TP's also transmit synchronization signal(s) synchronously. In some embodiments, the transmission of some other sets of TP's are not mutually synchronized (between the sets), but only within each set, i.e., some other sets of TP's may be unsynchronized with the N TP's in the example.
In various embodiments, other sets of TP's also transmit synchronization signal(s) synchronously. In some embodiments, the transmission of some other sets of TP's are not mutually synchronized (between the sets), but only within each set, i.e. some other sets of TP's may be unsynchronized with the N TP's in the example. As described in various embodiments above, the device obtains a sync reference based on the synchronization signal(s) transmitted from the N TP's, or a subset of the N TP's in some embodiments. In some embodiments, the device obtains multiple different sync references based on different sets of unsynchronized TP's.
Using a sync reference, e.g. the sync reference obtained from the N TP's in this embodiment, the devices performs measurements on the measurement RS's and obtains measurement results, as described in various embodiments above.
Based on a random access mapping, the device obtains a set of allowed random access resources, as described in various embodiments above. In some embodiments, the set of allowed random access resources can be based on the measurement RS with highest RSRP. In some embodiments, the device transmits a random access signal on a random access resource from the set.