Patent ID: 8503338

Claim:
A method of determining cyclic shift (CS) and orthogonal cover code (OCC) values associated with DeModulation Reference Signals (DMRS), for a plurality of transmission layers, by a device in a wireless communication system employing Multiple Input Multiple Output (MIMO) operation, comprising: receiving a semi-static cyclic shift (CS) value n DMRS (1) ; receiving a dynamic CS index value n DMRS ; indexing a predetermined table with n DMRS to obtain a first CS value n DMRS (2) and an orthogonal cover code (OCC) value n DMRS OCC associated with DMRS for layer 0; deriving a first CS value associated with DeModulation Reference Signals (DMRS) for each other layer by adding a different integer multiple of a predetermined minimum offset to n DMRS (2) ; and calculating a second CS value for each layer by adding n DMRS (1) to the first CS value; wherein within the predetermined table, the CS values n DMRS (2) are arranged in two or more sets of CS values n DMRS (2) , the CS values n DMRS (2) within each set being separated by the predetermined minimum offset.