Communication method for non-terrestrial network and terminal device
View Patent ↗Provided in embodiments of the disclosure are a communication method and device. A terminal device receives configuration information from a network device, and transmits timing advance (TA) information to the network device according to the configuration information. The TA information is configured to indicate a TA value determined by the terminal device.
1. A communication method for a non-terrestrial network (NTN), implemented by a terminal device, the method comprising:
receiving configuration information from a network device; and
transmitting timing advance (TA) information to the network device, according to the configuration information, wherein the TA information is configured to indicate a TA value determined by the terminal device;
wherein the configuration information is configured to indicate;
a reporting mode of the TA information; and
a physical channel carrying the TA information;
wherein the reporting mode is aperiodic reporting, and the physical channel carrying the TA information is a physical uplink shared channel (PUSCH).
2. The method according to claim 1 , wherein before the transmitting TA information to the network device according to the configuration information, the method further comprises:
receiving first indication information from the network device, wherein the first indication information is configured to indicate whether to transmit the TA information.
3. The method according to claim 2 , wherein the first indication information is carried through a physical downlink control channel (PDCCH), the PDCCH is configured to schedule a PUSCH resource, and the first indication information is configured to indicate whether to transmit the TA information on the scheduled PUSCH resource.
4. The method according to claim 1 , wherein the configuration information is radio resource control (RRC) signaling.
5. The method according to claim 1 , wherein the TA information comprises an index corresponding to the TA value.
6. The method according to claim 1 , wherein the TA information comprises: an index corresponding to a first TA value or an index corresponding to a second TA value;
wherein the first TA value is a real-time TA value determined by the terminal device, and the second TA value is a change of the real-time TA value determined by the terminal device relative to a last reported TA value.
7. The method according to claim 1 , wherein before the transmitting TA information to the network device according to the configuration information, the method further comprises:
determining the TA information, according to location information of the terminal device and location information of the network device.
8. The method according to claim 7 , wherein before the determining the TA information according to location information of the terminal device and location information of the network device, the method further comprises:
determining the location information of the network device according to ephemeris information.
9. A communication method for a non-terrestrial network (NTN), implemented by a network device, the method comprising:
transmitting configuration information to a terminal device; and
receiving timing advance (TA) information from the terminal device, wherein the TA information is configured to indicate a TA value determined by the terminal device;
wherein the configuration information is configured to indicate:
a reporting mode of the TA information; and
a physical channel carrying the TA information;
wherein the reporting mode is aperiodic reporting and the physical channel carrying the TA information is a physical uplink shared channel (PUSCH).
10. The method according to claim 9 , wherein before the receiving TA information from the terminal device, the method further comprises:
transmitting first indication information to the terminal device, wherein the first indication information is configured to indicate whether to transmit the TA information.
11. The method according to claim 10 , wherein the first indication information is carried through a physical downlink control channel (PDCCH), the PDCCH is configured to schedule a PUSCH resource, and the first indication information is configured to indicate whether to transmit the TA information on the scheduled PUSCH resource.
12. A terminal device, comprising a transceiver, a processor, and a memory;
wherein the memory is configured to store computer-executable instructions; and
the processor is configured to execute the computer-executable instructions stored in the memory, to cause the processor to:
receive, through the transceiver, configuration information from a network device;
determine a timing advance (TA) value, in response to the configuration information; and
transmit, through the transceiver, TA information indicating the TA value to the network device;
wherein the configuration information is configured to indicate;
a reporting mode of the TA information; and
a physical channel carrying the TA information;
wherein the reporting mode is periodic reporting, and the physical channel carrying the TA information is a physical uplink shared channel (PUSCH).