Terminal, radio communication method, base station, and system
A terminal is disclosed including a receiver that receives a synchronization signal block (SSB); a processor that determines, based on the SSB, a time resource for a preamble used for a 2-step random access procedure, and determines, based on the SSB, a time resource for an uplink shared channel (PUSCH) used for the random access procedure; and a transmitter that transmits the preamble and the PUSCH. In other aspects a radio communication method, a base station, and a system are also disclosed.
1. A terminal comprising:
a receiver that receives a synchronization signal block (SSB);
a processor that:
determines, based on the SSB, a time resource for a preamble used for a 2-step random access procedure, and
determines, based on the SSB, a time resource for an uplink shared channel (PUSCH) used for the random access procedure; and
a transmitter that transmits the preamble and the PUSCH,
wherein the time resource for the PUSCH is determined in common for a plurality of the preambles, and
wherein a given gap interval is configured between a preamble having a latest transmission timing among the plurality of the preambles and a transmission timing of the PUSCH transmission.
2. A radio communication method for a terminal, comprising:
receiving a synchronization signal block (SSB);
determining, based on the SSB, a time resource for a preamble used for a 2-step random access procedure; and
determining, based on the SSB, a time resource for an uplink shared channel (PUSCH) used for the random access procedure; and
transmitting the preamble and the PUSCH,
wherein the time resource for the PUSCH is determined in common for a plurality of the preambles, and
wherein a given gap interval is configured between a preamble having a latest transmission timing among the plurality of the preambles and a transmission timing of the PUSCH transmission.
3. A base station comprising:
a transmitter that transmits a synchronization signal block (SSB); and
a receiver that:
receives a preamble which is transmitted in a time resource for the preamble determined based on the SSB and is used for a 2-step random access procedure, and
receives an uplink shared channel (PUSCH) which is transmitted in a time resource for the PUSCH determined based on the SSB and is used for the random access procedure,
wherein the time resource for the PUSCH is determined in common for a plurality of the preambles, and
wherein a given gap interval is configured between a preamble having a latest reception timing among the plurality of the preambles and a reception timing of the PUSCH reception.
4. A system comprising a terminal and a base station, wherein
the terminal comprises:
a receiver of the terminal that receives a synchronization signal block (SSB);
a processor that:
determines, based on the SSB, a time resource for a preamble used for a 2-step random access procedure, and
determines, based on the SSB, a time resource for an uplink shared channel (PUSCH) used for the random access procedure; and
a transmitter that transmits the preamble and the PUSCH,
wherein the time resource for the PUSCH is determined in common for a plurality of the preambles, and
wherein a given gap interval is configured between a preamble having a latest transmission timing among the plurality of the preambles and a transmission timing of the PUSCH transmission, and
the base station comprises:
a receiver of the base station that receives the preamble and the PUSCH.