Method and device for receiving service through different wireless communication systems
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for a terminal to receive a service through different wireless communication systems is provided. The method includes identifying whether a request for use of a second wireless communication system that uses a second band is sensed with respect to the terminal that performs communications with a base station of a first wireless communication system through a first band and the second band, when the request for use of the second wireless communication system is sensed, transmitting a message including information indicating a change of user equipment (UE) capability information, and reporting the changed UE capability information based on the message.
1. A method by a terminal for receiving a service through different wireless communication systems, the method comprising:
receiving, from a base station of a first wireless communication system, a configuration message for configuring a secondary cell in an unlicensed band;
identifying a request for use of a second wireless communication system using the unlicensed band;
transmitting, to a mobility management entity (MME), a detach request message for detaching the terminal from a network; and
reporting user equipment (UE) capability information including information that indicates the terminal does not support a licensed assisted access (LAA) after attaching to the base station.
2. The method of claim 1 , wherein the identifying the request for use of the second wireless communication system comprises at least one of identifying that power of a wireless local area network (LAN) of the terminal has turned on, identifying that wireless LAN background scanning is performed, or identifying that the terminal moves to an area in which usability of the wireless LAN is high.
3. The method of claim 2 , wherein the area is determined based on at least one of global positioning system (GPS) information, a cell identifier, and a wireless LAN identifier.
4. The method of claim 1 , further comprising:
communicating with the first wireless communication system using a licensed band; and
communicating with the second wireless communication system using the unlicensed band.
5. The method of claim 1 ,
wherein identifying the request for use of the second wireless communication system comprises transmitting a measurement report to the base station, and
wherein the measurement report includes received signal strength less than a predetermined value.
6. A method by a base station of a first wireless communication system for providing a service to a terminal, the method comprising:
transmitting, to the terminal, a configuration message for configuring a secondary cell in an unlicensed band;
when a request for use of a second wireless communication system using the unlicensed band is identified and the terminal is detached from a network, transmitting a user equipment (UE) capability information request message after the terminal is attached to the base station; and
receiving UE capability information including information that indicates the terminal does not support a licensed assisted access (LAA).
7. The method of claim 6 , wherein the request is identified when power of a wireless local area network (LAN) of the terminal has turned on, wireless LAN background scanning is performed, or the terminal moves to an area in which usability of the wireless LAN is high.
8. The method of claim 7 , wherein the area is determined based on at least one of global positioning system (GPS) information, a cell identifier, and a wireless LAN identifier.
9. The method of claim 6 , wherein transmitting the configuration message comprises receiving a measurement report from the terminal.
10. The method of claim 9 , wherein the measurement report includes received signal strength less than a predetermined value.
11. A terminal for receiving a service through different wireless communication systems, the terminal comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
receive, from a base station of a first wireless communication system, a configuration message for configuring a secondary cell in an unlicensed band,
identify a request for use of a second wireless communication system using the unlicensed band,
transmit, to a mobility management entity (MME), a detach request message for detaching the terminal from a network, and
report user equipment (UE) capability information including information that indicates the terminal does not support a licensed assisted access (LAA) after attaching to the base station.
12. The terminal of claim 11 , wherein the request is identified when power of a wireless local area network (LAN) of the terminal has turned on, wireless LAN background scanning is performed, or the terminal moves to an area in which usability of the wireless LAN is high.
13. The terminal of claim 12 , wherein the area is determined based on at least one of global positioning system (GPS) information, a cell identifier, and a wireless LAN identifier.
14. The terminal of claim 11 , wherein the controller is further configured to:
communicate with the first wireless communication system using a licensed band, and
communicate with the second wireless communication system using the unlicensed band.
15. The terminal of claim 11 ,
wherein the controller is further configured to transmit a measurement report to the base station, and
wherein the measurement report includes received signal strength less than a predetermined value.
16. A base station of a first wireless communication system for providing a service to a terminal, the base station comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
transmit, to the terminal, a configuration message for configuring a secondary cell in an unlicensed band,
when a request for use of a second wireless communication system using the unlicensed band is identified and the terminal is detached from a network,
transmit a user equipment (UE) capability information request message after the terminal is attached to the base station, and
receive UE capability information including information that indicates the terminal does not support a licensed assisted access (LAA).
17. The base station of claim 16 , wherein the request is identified when power of a wireless local area network (LAN) of the terminal has turned on, wireless LAN background scanning is performed, or the terminal moves to an area in which usability of the wireless LAN is high.
18. The base station of claim 17 , wherein the area is determined based on at least one of global positioning system (GPS) information, a cell identifier, and a wireless LAN identifier.
19. The base station of claim 16 , wherein the controller is further configured to receive a measurement report from the terminal.
20. The base station of claim 19 , wherein the measurement report includes received signal strength less than a predetermined value.