See resolution for EMIX-160.
Please evaluate that response in the context of this issue. The only difference in the EMIX artifact is the time and schedule in the artifact, so real time and day ahead are the same description with different time and schedule.
There is no reference to any communication protocols because EMIX is an information model. For an example communication protocol see Energy Interoperation 1.0, but the use of this information model is not restricted.