Signal reception apparatus and method and communications system
A signal reception apparatus and method and a communications system. As the starting position of the time domain resource section used for receiving signals is determined according to the predefined or preconfigured reference time domain resource section, time domain resources on which receiving beams determined by the network device and the terminal equipment are based are uniform, thereby avoiding mismatch of the network device and the terminal equipment in receiving and transmitting beams and ensuring transmission reliability of the system.
1. A signal reception apparatus, comprising:
a memory that stores a plurality of instructions; and
processor circuitry coupled to the memory and configured to:
receive a first signal containing first control information at a first time domain resource section based on an assumption that a network device uses a first transmission configuration indication (TCI) state; and
receive a second signal at a second time domain resource section based on an assumption that the network device uses a second transmission configuration indication state,
a starting position of the second time domain resource section being determined according to a reference time domain resource section, the reference time domain resource section being related to the first control information, and the reference time domain resource section being predefined or preconfigured,
wherein the processor circuitry is further configured to receive a third signal at a third time domain resource section based on an assumption that the network device uses a third transmission configuration indication state;
a starting position of the third time domain resource section being determined according to the reference time domain resource section and a threshold, or the starting position of the third time domain resource section being determined according to the reference time domain resource section, the threshold being predefined or preconfigured,
the third time domain resource section starts from an M-th time domain resource unit after the reference time domain resource section, M being equal to the threshold, and M being a natural number; or
the third time domain resource section starts from an S-th time domain resource unit after the reference time domain resource section, S being indicated by the first control information, and S being a natural number,
the first signal is physical downlink control (PDCCH), the first control information is downlink control information (DCI), and the reference time domain resource section is a time domain symbol at a last position in the PDCCH where the DCI is located on a time axis.
2. The apparatus according to claim 1 , wherein,
the processor circuitry is further configured to detect the first control information in one of configured control resource sets (CORESET).
3. The apparatus according to claim 1 , wherein,
the second signal is a first data channel, the first control information being used to indicate a terminal equipment to receive the first data channel,
and/or, the third signal is a second data channel, the first control information being used to indicate the terminal equipment to receive the second data channel,
and the first data channel and the second data channel being identical or different.
4. The apparatus according to claim 1 , wherein,
the second signal contains second control information, the first control information being used to indicate a transmission parameter of the second control information, the transmission parameter comprising at least one of the following: channel coding, a coding rate, a modulation scheme, a time-frequency resource position, and a transmission configuration indication state.
5. The apparatus according to claim 1 , wherein,
the second time domain resource section starts from the reference time domain resource section, or
the second time domain resource section starts from a time domain resource unit next to the reference time domain resource section, or
the second time domain resource section starts from an N-th time domain resource unit after the reference time domain resource section, N being indicated by the first control information, and N being a natural number.
6. The apparatus according to claim 1 , wherein,
the first transmission configuration indication state is identical to or different from the second transmission configuration indication state.
7. The apparatus according to claim 6 , wherein,
the second transmission configuration indication state is identical to or different from the third transmission configuration indication state.
8. The apparatus according to claim 1 , wherein,
the first time domain resource section contains at least one time domain resource unit, the second time domain resource section contains at least one time domain resource unit, and the third time domain resource section contains at least one time domain resource unit, the time domain resource units being time domain symbols, or slots, or subframes.
9. A communications system, comprising a terminal equipment, the terminal equipment comprising the apparatus as claimed in claim 1 .