Paging signal transmitting method, paging signal receiving method, device and system
The present disclosure discloses a paging signal transmitting method, a paging signal receiving method, a device and a system, and relates to the field of communication. The paging signal transmitting method includes: generating a paging signal by an access network device, and transmitting the paging signal to a terminal by the access network device simultaneously using n scanning beams on n sub-bands, wherein the scanning beams that correspond to the respective sub-bands have different beam scanning areas, and n is a positive integer greater than 1. In examples of the present disclosure, n scanning beams are used by the access network device to simultaneously perform the scanning, which reduces the beam scanning period required for completely scanning the cell to be 1/n of the corresponding beam scanning period of the single scanning beam. In this way, the wake-up duration configured to the terminal is reduced, and the time when the terminal is in the dormant state is further increased, which is thereby beneficial to the terminal to save power.
1. A method for transmitting a paging signal, comprising:
generating, by an access network device, a paging signal; and
transmitting, by the access network device, the paging signal to a terminal simultaneously by n scanning beams on n sub-bands, wherein then scanning beams that correspond to the n sub-bands, respectively, have different beam scanning areas, n being a positive integer greater than 1, and a collection of the beam scanning areas of the n scanning beams is a coverage of a cell of the access network device.
2. An access network device, comprising:
a processor;
a transceiver connected to the processor; and
a memory for storing a processor-executable instruction, wherein
the processor is configured to:
generate a paging signal; and
transmit the paging signal to a terminal simultaneously using n scanning beams on n sub-bands, wherein the n scanning beams that correspond to the n sub-bands, respectively, have different beam scanning areas, n being a positive integer greater than 1, and a collection of the beam scanning areas of the n scanning beams is a coverage of a cell of the access network device.
3. The access network device according to claim 2 , wherein the n is determined by a number of transmission reception points (TRPs); and/or the n is determined by a number of terminals located in the coverage of the cell of the access network device.
4. The access network device according to claim 2 , wherein
the paging signal occupies a first time-frequency resource on the sub-bands;
or
the paging signal occupies the first time-frequency resource and a second time-frequency resource on the sub-bands.
5. The access network device according to claim 4 , wherein each of the sub-bands comprises m synchronization signal blocks located in m consecutive time domain units, and a synchronization signal is carried by the synchronization signal blocks, the m being a positive integer greater than 1;
the paging signal is carried by a time-frequency resource that is located after a time domain position of the synchronization signal in each of the synchronization signal blocks;
or
the paging signal is carried by each of the synchronization signal blocks, the paging signal having the same time domain position as the synchronization signal;
or
the paging signal is carried by m time-frequency resources that are located after the time domain position of the m synchronization signal blocks; wherein a frequency band of the first time-frequency resource belongs to the frequency band of the synchronization signal blocks, and the frequency band of the second time-frequency resource does not belong to the frequency band of the synchronization signal blocks.
6. The access network device according to claim 5 , wherein when the paging signal is carried by m time-frequency resources that are located after the time domain position of the m synchronization signal blocks,
transmitting the paging signal to the terminal simultaneously by n scanning beams on n sub-bands comprises:
transmitting, after transmitting the synchronization signal and a broadcast signal that are carried by the m synchronization signal blocks simultaneously by n first scanning beams on the n sub-bands, the paging signal carried by the m time-frequency resources to the terminal simultaneously by n second scanning beams on the n sub-bands.
7. The access network device according to claim 4 , wherein the paging signal includes a paging indication and a paging message; each of the sub-bands includes m synchronization signal blocks located in m consecutive time domain units, and a synchronization signal is carried by the synchronization signal blocks, the m being a positive integer greater than 1; and
the paging indication is carried by a time-frequency resource that is located after the time domain position of the synchronization signal in each of the synchronization signal blocks, and the paging message is carried by m time-frequency resources that are located after the time domain position of the m synchronization signal blocks.
8. The access network device according to claim 4 , wherein the processor is further configured to:
transmit system information to the terminal,
wherein the system information carries a paging occasion (PO) that corresponds to the paging signal, and the PO is determined by a length of the time-frequency resource, occupied by the paging signal, in a time domain.
9. The access network device according to claim 4 , wherein the processor is further configured to:
configure the paging signal corresponding to a first terminal and/or a second terminal to be carried by the first time-frequency resource; and
configure the paging signal corresponding to a second terminal to be carried by the second time-frequency resource;
wherein the first terminal is a terminal that does not support a preset frequency band; the second terminal is a terminal that supports the preset frequency band; and a frequency band of the second time-frequency resource belongs to the preset frequency band.
10. The access network device according to claim 9 , wherein the paging signal includes a paging indication and a paging message;
the paging indication and the paging message of the first terminal and the paging indication of the second terminal are carried by the first time-frequency resource, and the paging message of the second terminal is carried by the second time-frequency resource;
or
the paging indication and the paging message of the first terminal are carried by the first time-frequency resource, and the paging indication and the paging message of the second terminal are carried by the second time-frequency resource.
11. The access network device according to claim 9 , wherein the processor is further configured to:
transmit a resource position of the first time-frequency resource to the first terminal and the second terminal via minimum system information (minimum SI); and
transmit a resource position of the second time-frequency resource to the second terminal via other system information (other SI).
12. A terminal comprising:
a processor;
a transceiver connected to the processor; and
a memory for storing a processor-executable instruction, wherein the processor is configured to:
receive a paging signal transmitted by an access network device, wherein the paging signal is transmitted by the access network device simultaneously using n scanning beams on n sub-bands, and then scanning beams that correspond to the n sub-bands, respectively, have different beam scanning areas, n being a positive integer greater than 1, and a collection of the beam scanning areas of the n scanning beams is a coverage of a cell of the access network device.
13. The terminal according to claim 12 , wherein the n is determined by a number of transmission reception points (TRPs); and/or the n is determined by a number of terminals located in the coverage of the cell of the access network device.
14. The terminal according to claim 12 , wherein
the paging signal occupies a first time-frequency resource on the sub-bands;
or
the paging signal occupies the first time-frequency resource and a second time-frequency resource on the sub-bands.
15. The terminal according to claim 14 , wherein receiving the paging signal transmitted by the access network device comprises:
receiving, by the terminal, the paging signal on the first time-frequency resource when the terminal is a first terminal; and
receiving, by the terminal, the paging signal in the first time-frequency resource and/or the second time-frequency resource when the terminal is a second terminal;
wherein the first terminal is a terminal that does not support a preset frequency band; the second terminal is a terminal that supports the preset frequency band; and a frequency band of the second time-frequency resource belongs to the preset frequency band.
16. The terminal according to claim 15 , wherein the paging signal comprises a paging indication and a paging message;
the paging indication and the paging message of the first terminal and the paging indication of the second terminal are carried by the first time-frequency resource, and the paging message of the second terminal is carried by the second time-frequency resource;
or
the paging indication and the paging message of the first terminal are carried by the first time-frequency resource, and the paging indication and the paging message of the second terminal are carried by the second time-frequency resource.
17. The terminal according to claim 15 , wherein the processor is further configured to:
receive a resource position of the first time-frequency resource that is transmitted by the access network device via minimum system information (minimum SI), when the terminal is the first terminal; and
receive the resource position of the first time-frequency resource that is transmitted by the access network device via the minimum SI and a resource position of the second time-frequency resource that is transmitted by the access network device via other system information (other SI), when the terminal is the second terminal.
18. The terminal according to claim 14 , wherein each of the sub-bands comprises m synchronization signal blocks located in m consecutive time domain units, and a synchronization signal is carried by the synchronization signal blocks, the m being a positive integer greater than 1;
the paging signal is carried by a time-frequency resource that is located after a time domain position of the synchronization signal in each of the synchronization signal blocks;
or
the paging signal is carried by each of the synchronization signal blocks, the paging signal having the same time domain position as the synchronization signal;
or
the paging signal is carried by m time-frequency resources that are located after the time domain position of the m synchronization signal blocks; wherein a frequency band of the first time-frequency resource belongs to the frequency band of the synchronization signal blocks, and the frequency band of the second time-frequency resource does not belong to the frequency band of the synchronization signal blocks.