Method for transmitting and receiving control information for paging in wireless communication system and apparatus therefor
Disclosed herein is a method for transmitting and receiving control information for paging in a wireless communication system. Particularly, in a method for receiving a paging message in a wireless communication system according to an embodiment of the present invention, the method performed by a User Equipment may include receiving, from a base station, downlink control information (DCI) related to the paging message; and receiving the paging message based on the DCI, the DCI may include resource allocation information for the paging message and/or a short message related to system information, and the DCI may include at least one bit representing whether the resource allocation information and/or the short message are/is included in the DCI.
1. A method of receiving, by a User Equipment (UE), a paging message in a wireless communication system, the method comprising:
receiving, from a base station (BS), downlink control information (DCI) related to the paging message; and
receiving, from the BS, the paging message based on the DCI,
wherein the DCI includes resource allocation information for the paging message and/or a short message related to system information, and
wherein the DCI includes 2 bit information representing whether the resource allocation information is included in the DCI and whether the short message is included in the DCI.
2. The method of claim 1 , wherein the short message includes at least one of information related to a modification of the system information, indication information for Earthquake and Tsunami Warning System (ETWS) or indication information for Commercial Mobile Alert System (CMAS).
3. The method of claim 2 , wherein the indication information for Earthquake and Tsunami Warning System (ETWS) and the indication information for Commercial Mobile Alert System (CMAS) are set to a high priority in the system information.
4. The method of claim 2 , wherein a value of the 2 bit information indicates i) a first state for a case that the resource allocation information is included in the DCI, ii) a second state for a case that the short message is included in the DCI, or iii) a third state for a case that the resource allocation information and the short message are included in the DCI.
5. The method of claim 2 , wherein based on the short message being included in the DCI, the short message is not forwarded through the paging message scheduled by the DCI.
6. The method of claim 2 , wherein the DCI is scrambling by Paging-Radio Network Temporary Identifier (P-RNTI) related to the paging message.
7. A User Equipment (UE) configured to receive a paging message in a wireless communication system, the UE comprising:
at least one transceiver configured to transmit and receive a radio signal; and
at least one processor functionally connected with the at least one transceiver,
wherein the at least one processor is configured to control the UE to:
receive, from a base station (BS), downlink control information (DCI) related to the paging message; and
receive, from the BS, the paging message based on the DCI,
wherein the DCI includes resource allocation information for the paging message and/or a short message related to system information, and
wherein the DCI includes 2 bit information representing whether the resource allocation information is included in the DCI and whether the short message is included in the DCI.
8. The UE of claim 7 , wherein the short message includes at least one of information related to a modification of the system information, indication information for Earthquake and Tsunami Warning System (ETWS) or indication information for Commercial Mobile Alert System (CMAS).
9. The UE of claim 8 , wherein the indication information for Earthquake and Tsunami Warning System (ETWS) and the indication information for Commercial Mobile Alert System (CMAS) are set to a high priority in the system information.
10. The User Equipment UE of claim 8 , wherein a value of the 2 bit information indicates i) a first state for a case that the resource allocation information is included in the DCI, ii) a second state for a case that the short message is included in the DCI, and iii) a third state for a case that the resource allocation information and the short message are included in the DCI.
11. The UE of claim 8 , wherein based on the short message being included in the DCI, the short message is not forwarded through the paging message scheduled by the DCI.
12. The UE of claim 8 , wherein the DCI is scrambling by Paging-Radio Network Temporary Identifier (P-RNTI) related to the paging message.
13. A base station (BS) configured to transmit a paging message in a wireless communication system, the BS comprising:
at least one transceiver configured to transmit and receive a radio signal; and
at least one processor functionally connected with the at least one transceiver,
wherein the at least one processor is configured to control the BS to:
transmit, to a User Equipment (UE), downlink control information (DCI) related to the paging message; and
transmit, to the UE, the paging message based on the DCI,
wherein the DCI includes resource allocation information for the paging message and/or a short message related to system information, and
wherein the DCI includes 2 bit information representing whether the resource allocation information is included in the DCI and whether the short message is included in the DCI.