Method and apparatus for transmitting reference signal transmission and communication system
A method and apparatus for transmitting a reference signal and a communication system. The reference signal transmission method includes: a transmitter end generates one or more signals corresponding to the same transport block, the one or more signals including a data channel and a reference signal; and the transmitter end transmits the one or more signals in one or more time-domain resource segments, positions of reference signals being determined based on the one or more time-domain resource segments. The terminal equipment and the network device may be able to determine the positions of the reference signals in an actual repetition according to time-domain resource segments occupied by the actual repetition.
1. An apparatus for transmitting a reference signal, configured in a terminal equipment, the apparatus comprising:
processor circuitry configured to generate one or more actual repetitions corresponding to the same transport block, each of the one or more actua repetitions comprising a data channel and a reference signal;
a transmitter configured to transmit the one or more actual repetitions in one or more time-domain resource segments in which the one or more actual repetitions are located, positions of reference signals in the one or more actual repetitions being determined based on the one or more time-domain resource segments in which the one or more actual repetitions are located; and
a receiver configured to, before the transmitter transmits the signal, receive a command transmitted by a network device, the command configuring or indicating repetition of a data channel or a transport block,
wherein the command configuring or indicating repetition of a data channel or a transport block comprises: configuring or indicating the repetition of the transport block by the network device via higher layer signaling and downlink control information, the higher layer signaling comprising a third parameter, the third parameter configuring or indicating the repetition of the transport block, and the downlink control information comprising an indication field, the indication field indicating whether to enable the repetition, and the indication field indicating dynamic switching between a first repetition which is a petition of slot level and a second repetition which is a repetition of symbol level.
2. The apparatus according to claim 1 , wherein,
the transmitter transmits a first signal in a first time-domain resource segment, and transmits a second signal in a second time-domain resource segment, the first signal and the second signal corresponding to the same transport block, and the first signal and the second signal comprising a data channel and a reference signal, respectively, a position of the reference signal in the first signal being determined based on the first time-domain resource segment, and a position of the reference signal in the second signal being determined based on the second time-domain resource segment.
3. The apparatus according to claim 2 , wherein,
the transmitter transmits a third signal in a third time-domain resource segment, the third signal corresponding to the transport block and comprising a data channel and a reference signal, a position of the reference signal in the third signal being determined based on the third time-domain resource segment;
wherein the number of the third time-domain resource segment is one or more, and correspondingly, the number of the third signal is one or more.
4. The apparatus according to claim 1 , wherein the being determined based on the one or more time-domain resource segments refers to being determined based on at least one of the following:
a symbol length of the time-domain resource segment;
time-domain resource allocation (TDRA) configuration or indication of the time-domain resource segment;
higher layer signaling configuration; and
a provision in a specification.
5. The apparatus according to claim 4 , wherein the network device does not configure a second type of reference signal; or, the network device configures one or more second type of reference signals, the transmitter assumes that the network device does not configure the second type of reference signal, and the position of the reference signal in the one or more actual repetitions is determined based on the provision in a specification.
6. The apparatus according to claim 1 , wherein the network device configures one or more first type of reference signals and one or more second type of reference signals, the data channel in the signal is configured as being of a first type, and the position of the reference signal in the signal is a first symbol of a corresponding time-domain resource segment.
7. The apparatus according to claim 1 , wherein the network device configures one or more first type of reference signals and one or more second type of reference signals, the data channel in the signal is configured as being of a first type, and the position of the reference signal in the signal is a position determined according to at least one of the following: a symbol length of a corresponding time-domain resource segment, time-domain resource allocation configuration or indication of the corresponding time-domain resource segment, higher layer signaling configuration, and a provision in a specification.
8. The apparatus according to claim 1 , wherein the network device configures one or more first type of reference signals and one or more second type of reference signals, the data channel in the signal is configured as being of a first type, and the position of the reference signal in the signal is at least one of the following:
a first symbol of a corresponding time-domain resource segment, a second symbol of the corresponding time-domain resource segment, and a reference signal position to which the first type corresponds.
9. The apparatus according to claim 1 , wherein the network device configures one or more first type of reference signals, the data channel in the signal is configured as being of a first type, and the position of the reference signal in the signal is a first symbol and/or a second symbol of a corresponding time-domain resource segment.
10. The apparatus according to claim 1 , wherein the network device configures one or more first type of reference signals, the data channel in the signal is configured as being of a second type, and the position of the reference signal in the signal is a first symbol and/or a second symbol of a corresponding time-domain resource segment.
11. The apparatus according to claim 1 , wherein the command configuring or indicating repetition of a data channel or a transport block comprises: configuring or indicating the repetition of the transport block by the network device only via higher layer signaling, the higher layer signaling comprising a first parameter, the first parameter indicating the repetition of the transport block, or the first parameter indicating repetitions of the transport block and a number, which is an integer greater than or equal to 0, of the repetitions.
12. The apparatus according to claim 1 , wherein the command configuring or indicating repetition of a data channel or a transport block comprises:
configuring or indicating the repetition of the transport block by the network device only via higher layer signaling, the higher layer signaling comprising a second parameter, the second parameter enabling or disabling a number, which is an integer greater than or equal to 0, of dynamic nominal repetitions; wherein, when the number of dynamic nominal repetitions is enabled by the second parameter, the repetition of the transport block is enabled, and when the number of dynamic nominal repetitions is disabled by the second parameter, the repetition of the transport block is disabled.
13. The apparatus according to claim 12 , wherein when the number of dynamic nominal repetitions is enabled by the second parameter and the number of dynamic nominal repetitions is greater than or equal to a first value, the repetition of the transport block is enabled, and when the number of dynamic nominal repetitions is disabled by the second parameter, or the number of dynamic nominal repetitions is enabled by the second parameter but the number of dynamic nominal repetitions is less than or equal to a second value, the repetition of the transport block is disabled.
14. The apparatus according to claim 1 , wherein the indication field comprises at least one of the following:
a DCI field used for indicating a number, which is an integer greater than or equal to 0, of nominal repetitions;
a DCI field used for indicating time-domain resource allocation;
an information field used for indicating a mode of repetition and/or the number of nominal repetitions; and
an information field used for indicating the number of nominal repetitions and/or a mode of time-domain resource allocation.
15. The apparatus according to claim 1 , wherein the command configuring or indicating repetition of a data channel or a transport block comprises:
configuring or indicating the repetition of the transport block by the network device via higher layer signaling and downlink control information, the higher layer signaling comprising a fourth parameter, the fourth parameter configuring or indicating the repetition of the transport block, and a format of the downlink control information being associated with whether to enable the repetition.
16. The apparatus according to claim 1 , wherein
the first repetition is performed on consecutive slots, and
the second repetition is performed on consecutive symbols.
17. An apparatus for transmitting a reference signal, configured in a terminal equipment, the apparatus comprising,
processor circuitry configured to generate one or more actual repetitions corresponding to the same transport block, each of the one or more actual repetitions comprising a data channel and a reference signal;
a transmitter configured to transmit the one or more actual repetitions in one or more time-domain resource segments in which the one or more actual repetitions are located, positions of reference signals in the one or more actual repetitions being determined based on the one or more time-domain resource segments in which the one or more actual repetitions are located; and
a receiver configured to, before the transmitter transmits the signal, receive a command transmitted by a network device, the command configuring or indicating repetition of a data channel or a transport block, wherein
the command configuring or indicating repetition of a data channel or a transport block comprises: configuring or indicating the repetition of the transport block by the network device via higher layer signaling and downlink control information, the higher layer signaling comprising a third parameter, the third parameter configuring or indicating the repetition of the transport block, and the downlink control information comprising an indication field, the indication field indicating whether to enable the repetition, and the indication field indicating dynamic switching between a first repetition and a second repetition,
the first repetition corresponds to R15 repetition, and
the second repetition corresponds to R16 repetition.