Method and system facilitating paging a user equipment
Disclosed are systems and methods that include embodiments to determine a system frame number (SFN) of a radio frame using a first 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. A second identifier can be sent in a downlink control channel within a radio sub-frame of the radio frame, and a paging message is associated with the second identifier. This systems and methods may also include embodiments to determine 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.
1. A method for paging a user equipment (UE), comprising:
determining a system frame number (SFN) of a radio frame using a first 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, wherein a second identifier is sent in a downlink control channel within a radio sub-frame of the radio frame, and a paging message is associated with the second identifier;
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.
2. The method of claim 1 , wherein the first identifier related to the UE comprises an international mobile subscriber identifier (IMSI) of the UE.
3. The method of claim 1 , wherein the first identifier related to the UE comprises an IMSI of the UE mod a positive integer.
4. The method of claim 1 , wherein the second identifier is paging radio network temporary identifier (P-RNTI).
5. 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.
6. The method of claim 4 , further comprising:
sending, by a network device, the P-RNTI to the UE in the PDCCH within the radio sub-frame of the radio frame.
7. The method of claim 1 , further comprising:
decoding, by the UE, the downlink control channel within the radio sub-frame.
8. An apparatus, comprising circuitry configured to:
determine a system frame number (SFN) of a radio frameusing parameters including a first identifier related to a user equipment (UE), a discontinuous reception (DRX) period length of the UE, and a parameter indicating a quantity of paging occasions within the DRX period length, wherein a second identifier is sent in a downlink control channelwithin a radio sub-frame of the radio frame, and a paging message is associated with the second identifier;
determine 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; and
decode the downlink control channel within the radio sub-frame.
9. The apparatus of claim 8 , wherein the first identifier related to the UE comprises an-international mobile subscriber identifier (IMSI) of the UE.
10. The apparatus of claim 8 , wherein the first identifier related to the UE comprises an IMSI of the UE mod a positive integer.
11. The apparatus of claim 8 , wherein the DRX period length of the UE is a DRX value being specific for the UE.
12. The apparatus of claim 8 , wherein the second identifier is paging radio network temporary identifier (P-RNTI).
13. The apparatus of claim 8 , 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.
14. The apparatus of claim 13 , wherein the Frame Offset is set to 0.
15. An communication system, wherein the system comprising network device which is in communication with a user equipment (UE), wherein the network device is configured to:
determine a system frame number (SFN) of a radio frame using parameters including a first 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, wherein a second identifier is sent in a downlink control channel within a radio sub-frame of the radio frame, and a paging message is associated with the second identifier;
determine 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; and
send the second identifier to the UE in the downlink control channel within the radio sub-frame of the radio frame.
16. The system of claim 15 , wherein the identifier related to the UE comprises an international mobile subscriber identifier (IMSI) of the UE.
17. The system of claim 15 , wherein the identifier related to the UE comprises an IMSI of the UE mod a positive integer.
18. The system of claim 15 , wherein the DRX period length of the UE is a DRX value being specific for the UE.
19. The system of claim 15 , 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.
20. The system of claim 15 , the wherein the second identifier is paging radio network temporary identifier (P-RNTI).