In some embodiments, referring back to the operation 108 of FIG. 1, the device decodes system information, including an AIT and a measurement RS configuration. The device may immediately start measurements on measurement RS(s), with the SSI corresponding to the selected AIT entry used as sync reference. In some embodiments, referring back to the operation 110 of FIG. 1, the device decodes system information, including an AIT and a measurement RS configuration. The device may immediately start measurements on measurement RS(s), with the SSI corresponding to the selected AIT entry used as sync reference.
In some embodiments, referring back to the operation 112 of FIG. 1, the device selects an entry in the AIT based on the SSI measurement results, e.g. the entry corresponding to the index of the strongest measured SSI. A random access configuration is included in the entry. One or more sets of allowed random access resources are included in the entry, for instance in the random access configuration, according to various embodiments discussed above. In various embodiments, a measurement RS configuration is also included in the entry, for instance according to various embodiments discussed above. In various embodiments, for instance if a measurement RS configuration is included in system information, an entry does not include a measurement RS configuration. In various embodiments, if only one set of allowed random access resources are included in the entry, then the device may use that set directly and skip the following sub-steps, which aim at selecting a set from multiple sets. Furthermore, if there is an “unmapped” set of allowed random access resources, according to various embodiments above, then the device may choose to use the “unmapped” set directly.
