Method for paging, network device, and terminal device
View Patent ↗Provided are a method for paging, a network device, and a terminal device. The method for paging comprises: a network device determining a target synchronization signal block (SSB) in a plurality of SSBs of a current bandwidth carrier; and the network device sending a paging message of the terminal device to the terminal device at a frequency domain location where the target SSB is located. In embodiments of the present invention, a target SSB is determined in a plurality of SSBs of a current bandwidth carrier, such that a network device only needs to send a paging message of a terminal device to the terminal device at a frequency domain location where the target SSB is located, effectively reducing load on the network side in the sending of paging messages.
1. A method for paging, comprising:
determining, by a network device, a system frame number SFN1 according to a system frame number SFN2, the SFN2 satisfies a following formula:
SFN2 mod T =( T div N )*( UE - ID mod N );
wherein, the div represents an exact division, the mod represents a modulo operation, the T is a discontinuous reception (DRX) cycle currently used by a terminal device, the UE-ID represents an identification of the terminal device or an operation result taking the identification of the terminal device as an input, and the N is a configuration parameter on a network side or an operation result taking a parameter configured on the network side as an input; and
transmitting, by the network device, a paging message of the terminal device to the terminal device according to the SFN1;
wherein a difference value between the SFN2 and the SFN1 is an offset of a paging frame.
2. The method according to claim 1 , further comprising:
determining, by the network device, a target synchronization signal block (SSB) corresponding to the SFN1 from a plurality of SSBs of a current wideband carrier; and
transmitting, by the network device, the paging message of the terminal device to the terminal device in a frequency domain location where the target SSB is located.
3. The method according to claim 1 , wherein at least one SFN is spaced between the SFN2 and the SFN1.
4. The method according to claim 3 , wherein the number of the at least one SFN spaced between the SFN2 and the SFN1 is broadcasted to the terminal device through a system of the network device.
5. The method according to claim 1 , wherein the offset of the paging frame is broadcasted to the terminal device through a system of the network device.
6. A method for paging, comprising:
determining, by a terminal device, a system frame number SFN1 according to a system frame number SFN2, the SFN2 satisfies a following formula:
SFN2 mod T =( T div N )*( UE - ID mod N );
wherein, the div represents an exact division, the mod represents a modulo operation, the T is a discontinuous reception (DRX) cycle currently used by a terminal device, the UE-ID represents an identification of the terminal device or an operation result taking the identification of the terminal device as an input, and the N is a configuration parameter on a network side or an operation result taking a parameter configured on the network side as an input; and
receiving, by the terminal device, a paging message of the terminal device transmitted by a network device according to the SFN1;
wherein a difference value between the SFN2 and the SFN1 is an offset of a paging frame.
7. The method according to claim 6 , further comprising:
determining, by the terminal device, a target synchronization signal block (SSB) corresponding to the SFN1 from a plurality of SSBs of a current wideband carrier; and
receiving, by the terminal device, the paging message of the terminal device transmitted by the network device in a frequency domain location where the target SSB is located.
8. The method according to claim 6 , wherein at least one SFN is spaced between the SFN2 and the SFN1.
9. The method according to claim 8 , wherein the number of the at least one SFN spaced between the SFN2 and the SFN1 is broadcasted to the terminal device through a system of the network device.
10. The method according to claim 6 , wherein the offset of the paging frame is broadcasted to the terminal device through a system of the network device.
11. A network device, comprising:
a processor configured to determine a system frame number SFN1 according to a system frame number SFN2, the SFN2 satisfies a following formula:
SFN2 mod T =( T div N )*( UE - ID mod N );
wherein, the div represents an exact division, the mod represents a modulo operation, the T is a discontinuous reception (DRX) cycle currently used by a terminal device, the UE-ID represents an identification of the terminal device or an operation result taking the identification of the terminal device as an input, and the N is a configuration parameter on a network side or an operation result taking a parameter configured on the network side as an input; and
a transceiver configured to transmit a paging message of the terminal device to the terminal device according to the SFN1;
wherein a difference value between the SFN2 and the SFN1 is an offset of a paging frame.
12. The network device according to claim 11 , wherein the processor is further configured to:
determine a target synchronization signal block (SSB) corresponding to the SFN1 from a plurality of SSBs of a current wideband carrier; and
transmit the paging message of the terminal device to the terminal device in a frequency domain location where the target SSB is located.
13. The network device according to claim 11 , wherein at least one SFN is spaced between the SFN2 and the SFN1.
14. The network device according to claim 13 , wherein the number of the at least one SFN spaced between the SFN2 and the SFN1 is broadcasted to the terminal device through a system of the network device.
15. The network device according to claim 11 , wherein the offset of the paging frame is broadcasted to the terminal device through a system of the network device.
16. A terminal device, comprising:
a processor configured to determine a system frame number SFN1 according to a system frame number SFN2, the SFN2 satisfies a following formula:
SFN2 mod T =( T div N )*( UE - ID mod N );
wherein, the div represents an exact division, the mod represents a modulo operation, the T is a discontinuous reception (DRX) cycle currently used by a terminal device, the UE-ID represents an identification of the terminal device or an operation result taking the identification of the terminal device as an input, and the N is a configuration parameter on a network side or an operation result taking a parameter configured on the network side as an input; and
a transceiver configured to receive a paging message of the terminal device transmitted by a network device according to the SFN1;
wherein a difference value between the SFN2 and the SFN1 is an offset of a paging frame.
17. The terminal device according to claim 16 , the processor is further configured to:
determine a target synchronization signal block (SSB) corresponding to the SFN1 from a plurality of SSBs of a current wideband carrier; and
receive the paging message of the terminal device transmitted by the network device in a frequency domain location where the target SSB is located.
18. The terminal device according to claim 16 , wherein at least one SFN is spaced between the SFN2 and the SFN1.
19. The terminal device according to claim 18 , wherein the number of the at least one SFN spaced between the SFN2 and the SFN1 is broadcasted to the terminal device through a system of the network device.
20. The terminal device according to claim 16 , wherein the offset of the paging frame is broadcasted to the terminal device through a system of the network device.