Inner and outer bounds on the identification capacity region of the degraded broadcast channel

In this work inner and outer bounds on the identification (ID) capacity region of the degraded broadcast channel (DBC) are developed. The inner bound exceeds, in general, the transmission capacity region of the DBC. This is due to the fact that messages sent (in the Shannon sense) to the degraded user can be decoded by the non-degraded user, and hence serve as a common experiment.