Abstract: An Integrated Access and Backhaul (IAB) node that communicates over a radio interface, the IAB node comprising: receiving circuity configured to receive first bitmap information used for indicating which synchronization signal and physical broadcast channel block (SS/PBCH block) is transmitted in a SS/PBCH block transmission(s), the receiving circuity configured to receive second information used for indicating whether the SS/PBCH transmission is muted or not, and transmitting circuitry configured to perform, based on the first bitmap information and the second information, the SS/PBCH transmission(s).

Abstract: To efficiently transmit a power headroom. An apparatus includes a receiver configured to receive first information and receive a physical downlink control channel, the first information including a resource configuration of one or more sounding reference signals, and a transmitter configured to transmit information indicating a first power headroom level for a physical uplink shared channel associated with a sounding reference signal resource index included in downlink control information carried on the downlink control channel, and transmit information indicating a second power headroom level for a physical uplink shared channel associated with a sounding reference signal resource index not included in the downlink control information carried on the downlink control channel.

Abstract: A terminal apparatus (1, 1A, 1B) includes: a receiver (10) configured to receive preamble index information on a physical downlink control channel; and a transmitter (10) configured to, in a case where the preamble index information indicates a prescribed value, select a block from one or more blocks to transmit a random access preamble based on the block selected, and in a case where the preamble index information indicates a value other than the prescribed value, transmit the random access preamble corresponding to a preamble index indicated by the preamble index information, wherein the block includes four OFDM symbols to which at least a synchronization signal and a physical broadcast channel are mapped.

Abstract: An access node of a radio access network (RAN) that communicates over a radio interface with a wireless terminal. The access node comprises processor circuitry, transmitting circuitry, and receiving circuitry. The processor circuitry is configured to generate an indication of access node capability to support the wireless terminal when the wireless terminal operates in a restricted mode. The transmitting circuitry is configured to transmit the indication to the wireless terminal. The receiving circuitry is configured to receive an indication from the wireless terminal that the wireless terminal is in the restricted mode. The processor circuitry is further configured to make a determination, upon receipt of the indication from the wireless terminal, that a connection with the wireless terminal can be maintained in the restricted mode and to generate a responsive message based on the determination.

Abstract: A terminal apparatus receives a first measurement configuration from a first base station apparatus via a first SRB and receives a second measurement configuration from a second base station apparatus via a second SRB, and transmits via the first SRB a first measurement result for the first measurement configuration configured from the first base station apparatus via the first SRB and transmits via the second SRB a second measurement result for the second measurement configuration configured from the second base station apparatus via the second SRB.

Abstract: A terminal apparatus communicates with a base station apparatus. The terminal apparatus includes: a determination unit that determines the number of modulation symbols for channel state information transmitted on a physical uplink shared channel based on a value of an offset; and a transmission unit that transmits the channel state information to the base station apparatus on the physical uplink shared channel. When two subframe sets are configured by higher layers, the value of the offset is determined depending on the subframe set to which subframes for transmission on the physical uplink shared channel belong. Thus, the communication can be performed efficiently in a radio communication system in which the channel state information is used.

Abstract: Uplink communication is efficiently performed in non-allocated frequencies. The terminal apparatus includes: a reception unit configured to receive downlink control information on a PDCCH; and a transmission unit configured to transmit a random access preamble. For a first frame structure type, the downlink control information is used to configure a subframe number of a first uplink subframe in which transmission of the random access preamble is allowed. For a second frame structure type, the downlink control information is used to configure a subframe number of a second uplink subframe in which transmission of the random access preamble is allowed and a symbol number of an uplink symbol in the second uplink subframe.

Abstract: Processing relating to transmit power is efficiently performed. A terminal device includes a reception unit configured to receive a first parameter and a second parameter, and a first MAC processing unit configured to acquire a type 2 power headroom. The first MAC processing unit acquires a value of the type 2 power headroom for a primary cell, in a case that the first parameter is configured and that simultaneous transmissions on a Physical Uplink Control CHannel (PUCCH) and on a Physical Uplink Shared CHannel (PUSCH) are configured, and acquires a value of the type 2 power headroom for the primary cell, regardless of whether simultaneous transmissions on the Physical Uplink Control CHannel (PUCCH) and on the Physical Uplink Shared CHannel (PUSCH) are configured in a case that the second parameter is configured.

Abstract: A terminal apparatus includes: a receiver configured to receive an RRC message including an index of a random access preamble corresponding to one of one or multiple SS blocks or an index of a random access preamble corresponding to one of one or multiple CSI-RSs transmitted by a base station apparatus; a configuration unit configured to, in a case that a reference signal received power of at least one of the one or multiple SS blocks or at least one of the one or multiple CSI-RS blocks exceeds a prescribed threshold value, select one of the one or multiple SS blocks or one of the one or multiple CSI-RS blocks with the reference signal received power exceeding the prescribed threshold value, and set a preamble index to an index of the random access preamble corresponding to the selected one of the one or multiple SS blocks or the selected one of the one or multiple CSI-RSs; and a transmitter configured to transmit a random access preamble corresponding to the preamble index.

Abstract: To efficiently transmit CSI. A receiver configured to receive a physical downlink control channel for conveying downlink control information including a first information field and a transmitter configured to report channel state information (CSI) are included, wherein the first information field indicates first information, the first information indicates one of multiple states, each of the multiple states is associated with a configuration related to one or multiple CSI reports and a configuration related to one or multiple CSI resources, and the one of the multiple states is configured to be associated with a first serving cell and a bandwidth part (BWP) of the first serving cell.

Abstract: An object of the present invention is to efficiently perform communication between a terminal apparatus and a base station apparatus. The present invention provides a terminal apparatus including: a receiver configured to receive an RRC message including information for indicating an RACH occasion corresponding to one of one or multiple CSI-RSs; and a transmitter configured to, in a case that a reference signal received power of at least one of the one or multiple CSI-RS blocks exceeds a prescribed threshold, select one of the one or multiple CSI-RS blocks with the reference signal received power exceeding the prescribed threshold, select the RACH occasion corresponding to the selected CSI-RS, and transmit a random access preamble in the selected RACH occasion.

Abstract: A terminal apparatus for communicating with a base station apparatus includes a receiver configured to receive at least one synchronization signal burst periodically transmitted. A first synchronization signal and a second synchronization signal are mapped at a particular time position in a radio frame. Each of the at least one synchronization signal burst includes at least one synchronization signal block. Each of the at least one synchronization signal block includes at least one of the first synchronization signal, the second synchronization signal, or a physical broadcast channel. The receiver receives, from the base station apparatus, information for indicating the number of the at least one synchronization signal block included in each of the at least one synchronization signal burst.

Abstract: To efficiently transmit a sounding reference signal. One or more downlink BWPs are configured in a serving cell, one or more uplink BWPs are configured in a serving cell, each BWP of the one or more downlink BWPs is identified by a downlink BWP index, each BWP of the one or more uplink BWPs is identified by the uplink BWP index, and in a case that one of the one or more downlink BWPs configured is activated in a serving cell, one of the one or more uplink BWPs configured is activated in a serving cell, and an SRS transmission in one or more serving cells of a plurality of the serving cells is triggered, the SRS for the BWP indicated by the uplink BWP index activated in the serving cell activated is transmitted.

Abstract: Uplink data is transmitted efficiently. A terminal device includes: a reception unit configured to receive a parameter included in an RRC message; a higher layer processing unit configured to store an uplink grant as a configured uplink grant; and a transmission unit configured to transmit a MAC protocol data unit. In a case that the parameter is configured and an initial transmission based on the configured uplink grant is performed and that the MAC protocol data unit includes only a prescribed MAC control element, the MAC protocol data unit is not transmitted. The prescribed MAC control element includes a MAC control element for a padding BSR, and does not include a MAC control element for a regular BSR.

Abstract: To provide a terminal apparatus including a receiver configured to receive, in a time resource including a plurality of OFDM symbol groups, a synchronization signal included in each of the plurality of OFDM symbol groups, a synchronization unit configured to determine a position of a first synchronization signal that is one of the synchronization signals, and a detection unit configured to receive, based on the first synchronization signal, a physical broadcast channel. The time resource is periodically allocated, and a maximum number of the plurality of OFDM symbol groups in which the synchronization signal included in the time resource is possibly transmitted is predefined.

Abstract: Uplink communication is efficiently performed in non-allocated frequencies. The terminal apparatus includes: a reception unit configured to receive downlink control information on a PDCCH; and a transmission unit configured to transmit a random access preamble. For a first frame structure type, the downlink control information is used to configure a subframe number of a first uplink subframe in which transmission of the random access preamble is allowed. For a second frame structure type, the downlink control information is used to configure a subframe number of a second uplink subframe in which transmission of the random access preamble is allowed and a symbol number of an uplink symbol in the second uplink subframe.

Abstract: To efficiently transmit a sounding reference signal. In order for a base station apparatus and a terminal apparatus in a radio communication system to efficiently provide a terminal apparatus, a base station apparatus, a communication method, and an integrated circuit, a transmitter configured to transmit a sounding reference signal, and a receiver configured to receive a first channel state information calculation reference signal (CSI-RS) in a BandWidth Part (BWP) activated in downlink of a first serving cell are included, wherein a first spatial domain transmission filter (transmission beam, precoder) is calculated using the first CSI-RS, and a configuration parameter for transmitting the sounding reference signal is received using the first spatial domain transmission filter.

Abstract: To efficiently transmit a sounding reference signal. In order for a base station apparatus and a terminal apparatus in a radio communication system to efficiently provide a terminal apparatus, a base station apparatus, a communication method, and an integrated circuit, a transmitter configured to transmit a sounding reference signal, and a transmitter configured to transmit a first sounding reference signal in a BandWidth Part (BWP) activated in uplink of a first serving cell are included, wherein a spatial domain transmission filter identical to a spatial domain transmission filter used to transmit the first sounding reference signal is used, and a configuration parameter for transmitting a second sounding reference signal is received.

Abstract: To efficiently transmit a sounding reference signal. In order for a base station apparatus and a terminal apparatus in a radio communication system to efficiently provide a terminal apparatus, a base station apparatus, a communication method, and an integrated circuit, a transmitter configured to transmit a sounding reference signal, and a receiver configured to receive a first downlink signal in a BandWidth Part (BWP) activated in downlink in a first serving cell are included, wherein a spatial domain transmission filter identical to a spatial domain reception filter used to receive the first downlink signal is used, and a configuration parameter for transmitting the sounding reference signal is received.

Abstract: A terminal device and a base station device efficiently communicate with each other. For the terminal device, in a case that third information is configured, a third maximum number of layers assumed for determining a bit width for a first RI and a fourth maximum number of layers assumed for determining a bit width for a second RI are provided, based on the third information. In a case that third information is not configured, (i) the third maximum number is provided, based on the smallest of a first number and a second number, and (ii) the fourth maximum number is provided, based on a smallest one of the first number and a third number. The first number is a second maximum number of the layers indicated by second information, the second number is a largest one of the number of antenna ports of a plurality of first CSI-RS resources, and the third number is a largest one of the number of antenna ports of a plurality of second CSI-RS resources.