Application of sequence hopping and orthogonal covering codes to uplink reference signals

A method of a base station for receiving a reference signal, the method comprising:

• transmitting a first parameter, which is a cell specific parameter, via higher layer signaling;
• transmitting a second parameter, which is a user equipment (UE) specific parameter, via the higher layer signaling;
• and
• receiving the reference signal on a physical uplink shared channel (PUSCH), and
• wherein the reference signal is generated by not applying group sequence hopping, for orthogonal reference signal multiplexing, if the first parameter indicates that the group sequence hopping is enabled and the second parameter indicates that the group sequence hopping is disabled, and
• wherein the group sequence hopping includes hopping among different groups.

A user equipment (UE) for transmitting a reference signal, the UE comprising:

• a transceiver configured to transmit and receive signals;
• and
• a controller configured to control the transceiver to receive a first parameter, which is a cell specific parameter, via higher layer signaling, to control the transceiver to receive a second parameter, which is a UE specific parameter, via the higher layer signaling, to control to acquire the reference signal for a physical uplink shared channel (PUSCH), based on the second parameter, and to control the transceiver to transmit the reference signal on the PUSCH,
• wherein group sequence hopping is not applied to acquire the reference signal, for orthogonal reference signal multiplexing, if the first parameter indicates that the group sequence hopping is enabled and the second parameter indicates that the group sequence hopping is disabled, and
• wherein the group sequence hopping includes hopping among different groups.

A base station for receiving a reference signal, the base station comprising:

• a transceiver configured to transmit and receive signals;
• and
• a controller configured to control the transceiver to transmit a first parameter, which is a cell specific parameter, via higher layer signaling, to transmit a second parameter, which is a user equipment (UE) specific parameter, via the higher layer signaling, and to receive the reference signal on a physical uplink shared channel (PUSCH),
• wherein the reference signal is generated by not applying group sequence hopping, for orthogonal reference signal multiplexing, if the first parameter indicates that the group sequence hopping is enabled and the second parameter indicates that the group sequence hopping is disabled, and
• wherein the group sequence hopping includes hopping among different groups.