COMMUNICATION METHOD, APPARATUS AND SYSTEM
A communication apparatus, configured in a repeater, includes: a receiver configured to receive first indication information from a network device, the first indication information being used to indicate a time division duplex (TDD) uplink and downlink configuration, the TDD uplink and downlink configuration at least indicating a group of time units, the group of time units including one of the following: a downlink time unit; a downlink time unit and a flexible time unit; a downlink time unit, a flexible time unit and an uplink time unit; a flexible time unit and an uplink time unit; and an uplink time unit.
1 . A communication apparatus, configured in a repeater, the communication apparatus comprising:
a receiver configured to receive first indication information from a network device, the first indication information being used to indicate a time division duplex (TDD) uplink and downlink configuration, the TDD uplink and downlink configuration at least indicating a group of time units, the group of time units including one of the following:
a downlink time unit;
a downlink time unit and a flexible time unit;
a downlink time unit, a flexible time unit and an uplink time unit;
a flexible time unit and an uplink time unit; and
an uplink time unit, wherein
the uplink time unit is a symbol and/or a slot, the downlink time unit is a symbol and/or a slot, and the flexible time unit is a symbol and/or a slot, and
the uplink time unit is at least used by the repeater to forward a first signal to the network device, the first signal being obtained by the repeater by performing processing on a first received signal, and the downlink time unit is at least used by the repeater to receive a second signal from the network device, the second signal being processed and forwarded by the repeater after being received.
2 . The communication apparatus according to claim 1 , wherein,
the first indication information is at least further used to configure a period of the group of time units and/or a subcarrier spacing corresponding to the group of time units, and
the first indication information is included in radio resource control (RRC) signaling, higher-layer signaling comprising tdd-UL-DL-ConfigurationCommon, and/or higher-layer signaling comprising tdd-UL-DL-ConfiguratingDedicated.
3 . The communication apparatus according to claim 1 , further comprising
a processor configured to control to amplify the first received signal to obtain the first signal and control to amplify the received second signal,
a first transmitter configured to transmit the first signal to the network device, and
a second transmitter configured to transmit the amplified second signal.
4 . The communication apparatus according to claim 1 , wherein,
the receiver further receives fifth indication information from the network device, the fifth indication information being used to indicate the repeater to receive a fifth signal at a fifth time unit from the network device, the fifth time unit being the flexible time unit and/or the downlink time unit in the TDD uplink and downlink configuration, and the fifth signal being used by the repeater to perform demodulation and decoding to obtain information transmitted by the network device to the repeater,
the fifth indication information being a PDCCH, the fifth time unit being one or more time units, and the fifth signal being a PDSCH, or, the fifth indication information being higher-layer signaling, the fifth time unit being one or more periodic time units, and the fifth signal being a PDCCH, and
the fifth signal being used to carry a transmission space filter used by the repeater to transmit a third signal to the network device and/or a reception space filter used by the repeater to receive a fourth signal from the network device, the third signal being an uplink signal generated by the repeater, and the fourth signal being a downlink signal transmitted by the network device to the repeater.
5 . The communication apparatus according to claim 1 , wherein,
a transmission space filter used by the repeater to transmit third signal to the network device is identical to a transmission space filter used by the repeater to forward the first signal to the network device; and/or
a reception space filter used by the repeater to receive fourth signal from the network device is identical to a reception space filter used by the repeater to receive the second signal.
6 . The communication apparatus according to claim 1 , wherein,
the receiver is further configured to receive sixth indication information from the network device, the sixth indication information being used to indicate the repeater to receive at a sixth time unit a sixth signal from the network device, the sixth time unit being the flexible time unit and/or the downlink time unit in the TDD uplink and downlink configuration, and the sixth signal being used by the repeater to perform demodulation and decoding to obtain the information transmitted by the network device to the repeater,
the sixth indication information being a PDCCH, the sixth time unit being one or more time units, and the sixth signal being a PDSCH,
and the sixth signal being used to carry the transmission space filter used by the repeater to transmit the first signal to the network device and/or the reception space filter used by the repeater to receive the second signal.
7 . The communication apparatus according to claim 1 , wherein,
the receiver is further configured to receive seventh indication information from the network device, the seventh indication information being used to indicate the repeater to receive at a seventh time unit a seventh signal from the network device, the seventh time unit being the flexible time unit and/or the downlink time unit in the TDD uplink and downlink configuration, and the seventh signal being used by the repeater to perform demodulation and decoding to obtain the information transmitted by the network device to the repeater,
the seventh indication information being a PDCCH, the seventh time unit being one or more time units, and the seventh signal being a PDSCH, or, the seventh indication information being higher-layer signaling, the seventh time unit being one or more periodic time units, and the seventh signal being a PDCCH,
and the seventh signal being used to carry a transmission space filter used by the repeater to forward the processed second signal and/or a reception space filter used by the repeater to receive the first received signal.
8 . The communication apparatus according to claim 1 , wherein,
the receiver is further configured to receive the first indication information from the network device in a first cell, the first cell being a serving cell of the repeater.
9 . A communication apparatus, configured in a network device, wherein the communication apparatus comprising:
a transmitter configured to transmit first indication information to a repeater, the first indication information being used to indicate time division duplex (TDD) uplink and downlink configuration, the TDD uplink and downlink configuration at least indicating one group of time units, the group of time units including one of the following:
a downlink time unit;
a downlink time unit and a flexible time unit;
a downlink time unit, a flexible time unit and an uplink time unit;
a flexible time unit and an uplink time unit; and
an uplink time unit, wherein
the uplink time unit is a symbol and/or a slot, the downlink time unit is a symbol and/or a slot, and the flexible time unit is a symbol and/or a slot, and
the uplink time unit is at least used by the repeater to forward a first signal to the network device, the first signal being obtained by the repeater by performing processing on a first received signal, and the downlink time unit is at least used by the repeater to receive a second signal from the network device, the second signal being processed and forwarded by the repeater after being received.
10 . The communication apparatus according to claim 9 , wherein,
the first indication information is at least further used to configure a period of the group of time units and/or a subcarrier spacing corresponding to the group of time units, and
the first indication information is included in radio resource control (RRC) signaling, higher-layer signaling comprising tdd-UL-DL-ConfigurationCommon, and/or higher-layer signaling comprising tdd-UL-DL-ConfiguratingDedicated.
11 . The communication apparatus according to claim 9 , wherein,
the forwarding the first signal by the repeater comprises: amplifying the first received signal to obtain the first signal, and transmitting the first signal to the network device, by the repeater;
and the forwarding the processed second signal by the repeater comprises: amplifying the received second signal, and transmitting the amplified second signal, by the repeater.
12 . The communication apparatus according to claim 9 , wherein,
the transmitter is further configured to transmit fifth indication information to the repeater, the fifth indication information being used to indicate the repeater to receive a fifth signal at a fifth time unit from the network device, the fifth time unit being the flexible time unit and/or the downlink time unit in the TDD uplink and downlink configuration, and the fifth signal being used by the repeater to perform demodulation and decoding to obtain information transmitted by the network device to the repeater,
the fifth indication information being a PDCCH, the fifth time unit being one or more time units, and the fifth signal being a PDSCH, or, the fifth indication information being higher-layer signaling, the fifth time unit being one or more periodic time units, and the fifth signal being a PDCCH,
and the fifth signal being used to carry a transmission space filter used by the repeater to transmit a third signal to the network device and/or a reception space filter used by the repeater to receive a fourth signal from the network device, the third signal being an uplink signal generated by the repeater, and the fourth signal being a downlink signal transmitted by the network device to the repeater.
13 . The communication apparatus according to claim 9 , wherein,
a transmission space filter used by the repeater to transmit third signal to the network device is identical to a transmission space filter used by the repeater to forward the first signal to the network device; and/or
a reception space filter used by the repeater to receive fourth signal from the network device is identical to a reception space filter used by the repeater to receive the second signal.
14 . The communication apparatus according to claim 9 , wherein,
the transmitter is further configured to transmit sixth indication information to the repeater, the sixth indication information being used to indicate the repeater to receive at a sixth time unit a sixth signal from the network device, the sixth time unit being the flexible time unit and/or the downlink time unit in the TDD uplink and downlink configuration, and the sixth signal being used by the repeater to perform demodulation and decoding to obtain the information transmitted by the network device to the repeater,
the sixth indication information being a PDCCH, the sixth time unit being one or more time units, and the sixth signal being a PDSCH,
and the sixth signal being used to carry the transmission space filter used by the repeater to transmit the first signal to the network device and/or the reception space filter used by the repeater to receive the second signal.
15 . The communication apparatus according to claim 9 , wherein,
the transmitter is further configured to transmit seventh indication information to the repeater, the seventh indication information being used to indicate the repeater to receive at a seventh time unit a seventh signal from the network device, the seventh time unit being the flexible time unit and/or the downlink time unit in the TDD uplink and downlink configuration, and the seventh signal being used by the repeater to perform demodulation and decoding to obtain the information transmitted by the network device to the repeater,
the seventh indication information being a PDCCH, the seventh time unit being one or more time units, and the seventh signal being a PDSCH, or, the seventh indication information being higher-layer signaling, the seventh time unit being one or more periodic time units, and the seventh signal being a PDCCH,
and the seventh signal being used to carry a transmission space filter used by the repeater to forward the processed second signal and/or a reception space filter used by the repeater to receive the first received signal.
16 . The communication apparatus according to claim 9 , wherein the transmitter is further configured to transmit the first indication information to the repeater in a first cell, the first cell being a serving cell of the repeater.