TRANSMISSION METHOD AND APPARATUS FOR PHASE TRACKING REFERENCE SIGNAL
A terminal apparatus includes: a receiver configured to: receive, from a network device, configuration information that is carried by a higher layer parameter, receive, from the network device, indication information, and receive physical downlink shared channel (PDSCH) transmission occasions of the same transport block in a scheduling unit according to the configuration information and the indication information, the PDSCH transmission occasions including a first PDSCH transmission occasion and a second PDSCH transmission occasion; and processor circuitry configured to determine a demodulation reference signal (DMRS) antenna port and an associated a phase tracking reference signal (PTRS) antenna port for each of the PDSCH transmission occasions according to an association relationship indicated by the configuration information, wherein the indication information indicates: a first transmission configuration indication (TCI) state for the first PDSCH transmission occasion, and a second TCI, which is different from the first TCI state, for the second PDSCH transmission occasion.
1 . A terminal apparatus comprising:
a receiver configured to:
receive, from a network device, configuration information that is carried by a higher layer parameter,
receive, from the network device, indication information, and
receive physical downlink shared channel (PDSCH) transmission occasions of the same transport block in a scheduling unit according to the configuration information and the indication information, the PDSCH transmission occasions including a first PDSCH transmission occasion and a second PDSCH transmission occasion; and
processor circuitry configured to determine a demodulation reference signal (DMRS) antenna port and an associated a phase tracking reference signal (PTRS) antenna port for each of the PDSCH transmission occasions according to an association relationship indicated by the configuration information, wherein
the indication information indicates:
a first transmission configuration indication (TCI) state for the first PDSCH transmission occasion, and
a second TCI, which is different from the first TCI state, for the second PDSCH transmission occasion.
2 . The terminal apparatus according to claim 1 , wherein,
the association relationship includes:
association of a single PTRS antenna port with a first DMRS antenna port.
3 . The terminal apparatus according to claim 2 , wherein the first DMRS antenna port is a lowest indexed DMRS antenna port in DMRS antenna ports indicated by downlink control information.
4 . The terminal apparatus according to claim 1 , wherein,
the receiver receives a higher-layer signal including the configuration information.
5 . The terminal apparatus according to claim 1 , wherein,
the configuration information includes at least one of following pieces of information:
configured grant information,
the number of times of repeated transmission of a transport block, or
the number of PTRS antenna ports.
6 . The terminal apparatus according to claim 1 , wherein,
the receiver receives down control information including the indication information.
7 . The terminal apparatus according to claim 5 , wherein,
the association relationship further includes:
association of two PTRS antenna ports respectively with two DMRS antenna ports in DMRS antenna ports,
association of a first one of PTRS antenna ports with a first DMRS antenna port in DMRS antenna ports, and association of a second one of PTRS antenna ports with a third DMRS antenna port therein, or
association of two PTRS antenna ports with a first DMRS antenna port in DMRS antenna ports.
8 . The terminal apparatus according to claim 7 , wherein,
the third DMRS antenna port is a DMRS antenna port that is not transmitted in the scheduling unit.
9 . The terminal apparatus according to claim 7 , wherein the third DMRS antenna port is one of the following antenna ports:
a predefined antenna port,
a second DMRS antenna port in a CDM group different from a CDM group to which the first DMRS antenna port belongs, or
a fourth DMRS antenna port belonging to the same CDM group as the first DMRS antenna port and being indexed differently from the first DMRS antenna port.
10 . A network apparatus comprising:
a transmitter configured to:
transmit, to a terminal, configuration information that is carried by a higher layer parameter,
transmit, to the terminal, indication information, and
transmit physical downlink shared channel (PDSCH) transmission occasions of the same transport block in a scheduling unit according to the configuration information and the indication information, the PDSCH transmission occasions including a first PDSCH transmission occasion and a second PDSCH transmission occasion; and
processor circuitry configured to control to cause the terminal to determine, by transmitting the configuration information, a demodulation reference signal (DMRS) antenna port and an associated a phase tracking reference signal (PTRS) antenna port for each of the PDSCH transmission occasions according to an association relationship indicated by the configuration information, wherein
the indication information indicates:
a first transmission configuration indication (TCI) state for the first PDSCH transmission occasion, and
a second TCI, which is different from the first TCI state, for the second PDSCH transmission occasion.
11 . The network apparatus according to claim 10 , wherein,
the association relationship includes:
association of a single PTRS antenna port with a first DMRS antenna port.
12 . The network apparatus according to claim 11 , wherein the first DMRS antenna port is a lowest indexed DMRS antenna port in DMRS antenna ports indicated by downlink control information.
13 . The network apparatus according to claim 10 , wherein,
the transmitter transmits a higher-layer signal including the configuration information.
14 . The network apparatus according to claim 10 , wherein,
the configuration information includes at least one of following pieces of information:
configured grant information,
the number of times of repeated transmission of a transport block, or
the number of PTRS antenna ports.
15 . The network apparatus according to claim 10 , wherein,
the transmitter transmits down control information including the indication information.