Method for controlling service in radio communication system
In a user equipment of a wireless communication system, a method for signal transmission and reception may include: sending a request for a Circuit Switched voice network (CS) service to a Gateway Mobile Switching Center (GMSC) to send and receive data to and from a second user equipment; and receiving a call reject response corresponding to the service request from the GMSC, wherein the call reject response is sent by an entity in a core network of the second user equipment. According to an embodiment, it is possible to provide a suitable service to a sender terminal making a CS service request to a receiver terminal having subscribed only to a PS service without increasing network load.
1. A method performed by a base station in a wireless communication system, the method comprising:
receiving, from a first core network entity, information indicating that the first core network entity is unavailable;
receiving, from a terminal, a first message for requesting a registration, the first message not including information for identifying a core network entity;
selecting a second core network entity based on the information indicating that the first core network entity is unavailable; and
transmitting, to the second core network entity, a second message including the first message.
2. The method of claim 1 , wherein a context of the terminal is obtained by the second core network entity.
3. The method of claim 1 , wherein the second core network entity is selected further based on load balancing across candidate core network entities.
4. The method of claim 1 , further comprising:
transmitting, to the terminal, a third message as a response to the first message, the third message including an identity for the terminal.
5. A method performed by a terminal in a wireless communication system, the method comprising:
transmitting, to a base station, a first message for requesting a registration, the first message not including information for identifying a core network entity; and
receiving, from a second core network entity, a second message as a response to the first message,
wherein the second core network entity is selected based on information indication that a first core network entity is unavailable transmitted from the first core network entity.
6. The method of claim 5 , wherein a context of the terminal is obtained by the second core network entity.
7. The method of claim 5 , wherein the second core network entity is selected further based on load balancing across candidate core network entities.
8. The method of claim 5 , wherein the second message includes an identity for the terminal.
9. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a controller configured to:
receive, from a first core network entity via the transceiver, information indicating that the first core network entity is unavailable,
receive, from a terminal via the transceiver, a first message for requesting a registration, the first message not including information for identifying a core network entity,
select a second core network entity based on the information indicating that the first core network entity is unavailable, and
transmit, to the second core network entity via the transceiver, a second message including the first message.
10. The base station of claim 9 , wherein a context of the terminal is obtained by the second core network entity.
11. The base station of claim 9 , wherein the second core network entity is selected further based on load balancing across candidate core network entities.
12. The base station of claim 9 , wherein the controller is further configured to:
transmit, to the terminal, via the transceiver a third message as a response to the first message, the third message including an identity for the terminal.
13. A terminal in a wireless communication system, the terminal comprising:
a transceiver; and
a controller configured to:
transmit, to a base station via the transceiver, a first message for requesting a registration, and
receive, from a second core network entity via the transceiver, a second message as a response to the first message, the first message not including information for identifying a core network entity,
wherein the second core network entity is selected based on information indication that a first core network entity is unavailable transmitted from the first core network entity.
14. The terminal of claim 13 , wherein a context of the terminal is obtained by the second core network entity.
15. The terminal of claim 13 , wherein the second core network entity is selected further based on load balancing across candidate core network entities.
16. The terminal of claim 13 , wherein the second message includes an identity for the terminal.