APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING OF CYCLIC SHIFT PARAMETER FOR SUPPORTING ORTHOGONALITY IN MIMO ENVIRONMENT

摘要

A method includes: determining a Cyclic Shift (CS) parameter that implicitly indicates an orthogonality allocation rule and orthogonality-related information, by determining a multiple access state of a User Equipment (UE), and transmitting the determined CS parameter to the UE, wherein the orthogonality-related information includes an Orthogonal Cover Code indicated by the CS parameter, the orthogonality allocation rule is determined as a uniform scheme or a non-uniform scheme according to the CS parameter, determining the CS parameter by which the non-uniform scheme is applied if the UE is in a Single User Multiple Input Multiple Output state, and determining the CS parameter by which the uniform scheme is applied if the UE is in a Multiple User Multiple Input Multiple Output state.

主权项

1. A method, comprising:
receiving a Cyclic Shift (CS) parameter from a Base Station (BS); and transmitting, to the BS, reference signals for N layers, the reference signals being generated based on the CS parameter and an Orthogonal Cover Code (OCC), N being an integer, wherein if the CS parameter comprises one of 000, 001, 010 and 111, OCCs of a first layer and a second layer are identical and OCCs of a third layer and a fourth layer are identical while the OCC of the third layer is different from the OCC of the first layer, and wherein if the CS parameter comprises one of 010, 011, 100 and 110, an OCC is identically allocated to all of the N layers.