Multi-user multiple input multiple output communication systems and methods

A system for creating a Downlink Control Information (DCI) message for supporting user equipment (UE) specific communication using a respective reference signal (DM-RS) in Multi-User Multiple Input Multiple Output (MU-MIMO) communication;

• the system comprising logic to:
• create the DCI message comprising data associated with one or more than one antenna port, a scrambling identity (nSCID), a number of layers or an orthogonal cover code associated with the reference signal;
• the orthogonal cover code being an indication to a receiving UE regarding processing the respective reference signal, and logic to:
• output the DCI message for conveying to a UE associated with the UE specific communication,
• wherein the data associated with said one or more than one antenna port, a scrambling identity, a number of layers or an orthogonal cover code associated with the reference signal comprises data associated with a parameter set of {at least one layer, at least one antenna port, at least one of a scrambling identity for said at least one antenna port or an orthogonal cover code}, the parameter set to include:
• {1 layer, port 11, nSCID=1, OCC=4};
• {1 layer, port 13, nSCID=1, OCC=4};
• {2 layers, ports 11,13, nSCID=0};
• {2 layers, ports 11,13, nSCID=1};
• {2 layers, ports 7-8, nSCID=0, OCC=4};
• or
• {2 layers, ports 7-8, nSCID=1, OCC=4},
• where OCC represents the length of a respective orthogonal cover code.

One or more non-transitory, computer-readable media having instructions that, when executed by one or more processors, causes a user equipment (UE) to:

• process data associated with a switch of the UE from a first configuration state associated with first configuration data to a second configuration state associated with second configuration data, the first and second configuration data associated with respective sets of configurations that include antenna ports, UE reference signals, or codes;
• initiate a switch from the first configuration state to the second configuration state;
• process received signals, pending a switch to the second configuration state, using a common configuration state that includes common configuration data associated with both the first and second configuration data;
• and
• complete said switch from the first configuration state to the second configuration state and using the second configuration data.