Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a set of channel state information reference signal (CSI-RS) port mappings for different antenna adaptation levels of a base station. The UE may receive, from the base station, a CSI-RS in accordance with a first CSI-RS port mapping, from the set of CSI-RS port mappings, for a first antenna adaptation level of the different antenna adaptation levels. Numerous other aspects are described.

A transmission method including: a spreading code channel selection for selecting randomly a spreading code channel for CDMA spreading of transmission data, a time slot channel selection for selecting randomly a time slot channel for transmitting the CDMA-spread transmission data, a frequency channel selection for selecting randomly a frequency channel for transmitting the CMDA-spread transmission data, and a transmission for transmitting the transmission data CDMA-spread in the spreading code channel selected in the spreading code channel selection, using the time slot channel selected in the time slot channel selection, at a frequency corresponding to the frequency channel selected in the frequency channel selection.

A transmission method including: a spreading code channel selection for selecting randomly a spreading code channel for CDMA spreading of transmission data, a time slot channel selection for selecting randomly a time slot channel for transmitting the CDMA-spread transmission data, a frequency channel selection for selecting randomly a frequency channel for transmitting the CMDA-spread transmission data, and a transmission for transmitting the transmission data CDMA-spread in the spreading code channel selected in the spreading code channel selection, using the time slot channel selected in the time slot channel selection, at a frequency corresponding to the frequency channel selected in the frequency channel selection.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a downlink control information (DCI) that includes a transmission configuration indication (TCI) state, may determine that the TCI state specifies a quantity of two or more quasi-co-location (QCL) relationships may identify, based at least in part on the determining, a multi-transmit receive point (TRP) demodulation reference signal (DMRS) port group configuration included in a multi-TRP DMRS port group configuration data structure, and may perform, based at least in part on the multi-TRP DMRS port group configuration, a channel estimation for a downlink of a wireless communication link between the UE and the TR. Numerous other aspects are provided.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a downlink control information (DCI) that includes a transmission configuration indication (TCI) state, may determine that the TCI state specifies a quantity of two or more quasi-co-location (QCL) relationships may identify, based at least in part on the determining, a multi-transmit receive point (TRP) demodulation reference signal (DMRS) port group configuration included in a multi-TRP DMRS port group configuration data structure, and may perform, based at least in part on the multi-TRP DMRS port group configuration, a channel estimation for a downlink of a wireless communication link between the UE and the TR. Numerous other aspects are provided.

An interface module has at least a configuration connection, a reset connection, a transmission connection and a reception connection. The interface module also has at least a first interface processing unit and a second interface processing unit which differs from the first interface processing unit and the connections of which can be connected to the connections of the interface module via a multiplexer. Only one set of interface connections needs to be provided on the interface module. The multiplexer is controlled by a level at the

To solve a problem that unless all of a plurality of AICH signature states are correctly decoded, the contents of reception results cannot be recognized and the error rate of signature decoding will be high. In this embodiment, a base station uses, out of a signature combination, the signature of at least one predetermined position to indicate information containing a preamble reception result and uses the signature of a position other than the predetermined position to indicate a transmission profile information number of an uplink channel for notification to a user equipment. Thus, the error rate related to reception results can be reduced as compared with the case where a single signature combination is used to notify all pieces of information.

To solve a problem that unless all of a plurality of AICH signature states are correctly decoded, the contents of reception results cannot be recognized and the error rate of signature decoding will be high. In this embodiment, a base station uses, out of a signature combination, the signature of at least one predetermined position to indicate information containing a preamble reception result and uses the signature of a position other than the predetermined position to indicate a transmission profile information number of an uplink channel for notification to a user equipment. Thus, the error rate related to reception results can be reduced as compared with the case where a single signature combination is used to notify all pieces of information.

A device and method in which plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.

A device and method in which plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.