Method and system facilitating paging a user equipment
The technical solution under various embodiments of the present invention determines paging time by determining the position of a radio frame that includes a paging identifier with a view to ensuring energy efficiency of a User Equipment (UE).
1. A method for facilitating paging a user equipment (UE) using a paging radio network temporary identifier (P-RNTI), comprising:
receiving, by the UE, the P-RNTI being sent by a network device in a physical downlink control channel (PDCCH) within a radio sub-frame of a radio frame, wherein a paging message is associated with the P-RNTI;
determining, by the UE, a system frame number (SFN) of the radio frame by consideration of parameters including an identifier related to the UE, a discontinuous reception (DRX) period length of the UE, and a parameter indicating a quantity of paging occasions within the DRX period length;
determining, by the UE, a position of the radio sub-frame within the radio frame associated with the SFN with reference to a quantity of radio sub-frames suitable for the paging in the radio frame, the identifier related to the UE, and a parameter derived from the DRX period length of the UE;
obtaining, by the UE, the P-RNTI in the PDCCH within the radio sub-frame; and
obtaining, by the UE, the paging message associated with the P-RNTI.
2. The method of claim 1 , wherein the identifier related to the UE comprises an international mobile subscriber identifier (IMSI) of the UE.
3. The method of claim 1 , wherein the identifier related to the UE comprises an IMSI of the UE mod a positive integer.
4. The method of claim 1 , wherein the DRX period length of the UE is a DRX value being specific for the UE.
5. The method of claim 1 , wherein the DRX period length of the UE is broadcasted by the network device.
6. The method of claim 1 , wherein the SFN of the radio frame is determined according to the following formula:
SFN =(PAGING_DRX_PERIOD div PAGING_OCCASION_NUMBER) * (UE_ID mod PAGING_OCCASION _NUMBER) + n * PAGING _DRX_PERIOD+Frame Offset
wherein the SFN is the SFN of the radio frame, the PAGING_DRX_PERIOD indicates the DRX period length of the UE, the PAGING_OCCASION_NUMBER is the parameter indicating a quantity of paging occasions within the DRX period length, the UE_ID is the parameter related to an identifier of the UE, the n is a non-negative integer, and the Frame Offset is a non-negative integer.
7. A user equipment (UE) using a paging radio network temporary identifier (P-RNTI), comprising:
a memory retaining instructions; and
a processor configured to execute the instructions retained in the memory to thereby cause the following to be executed:
receiving the P-RNTI being sent by a network device in a physical downlink control channel (PDCCH) within a radio sub-frame of a radio frame, wherein a paging message is associated with the P-RNTI;
determining a system frame number (SFN) of the radio frame by consideration of parameters including an identifier related to the UE, a discontinuous reception (DRX) period length of the UE, and a parameter indicating a quantity of paging occasions within the DRX period length;
determining a position of the radio sub-frame within the radio frame associated with the SFN with reference to a quantity of radio sub-frames suitable for the paging in the radio frame, the identifier related to the UE, and a parameter derived from the DRX period length of the UE;
obtaining the P-RNTI in the PDCCH within the radio sub-frame; and
obtaining the paging message associated with the P-RNTI.
8. The UE of claim 7 , wherein the identifier related to the UE comprises an international mobile subscriber identifier (IMSI) of the UE.
9. The UE of claim 7 , wherein the identifier related to the UE comprises an IMSI of the UE mod a positive integer.
10. The UE of claim 7 , wherein the DRX period length of the UE is a DRX value being specific for the UE.
11. The UE of claim 7 , wherein the DRX period length of the UE is broadcasted by the network device.
12. The UE of claim 7 , wherein the SFN of the radio frame is determined according to the following formula:
SFN =(PAGING_DRX_PERIOD div PAGING_OCCASION _NUMBER) * (UE_ID mod PAGING_OCCASION_NUMBER) + n * PAGING _DRX _PERIOD+Frame Offset
wherein the SFN is the SFN of the radio frame, the PAGING_DRX_PERIOD indicates
the DRX period length of the UE, the PAGING_OCCASION_NUMBER is the parameter indicating a quantity of paging occasions within the DRX period length, the
UE_ID is the parameter related to an identifier of the UE, the n is a non-negative integer, and the Frame Offset is a non-negative integer.