Method and apparatus for resource allocation by sidelink inter-UE coordination in communication system
The disclosure relates to technologies for sensor networks, machine to machine (M2M), machine type communication (MTC), and Internet of things (IoT). The disclosure may be used for intelligent services (smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security and safety-related services, or the like) based on the above technology. A method of inter-user equipment (UE) coordination in sidelink communication and a procedure through which the UE performs resource selection are provided. The method includes receiving a request message requesting transmission of inter-UE coordination information from a second UE, determining inter-UE coordination information based on the request message, and transmitting the determined inter-UE coordination information to the second UE.
1. A method performed by a first user equipment (UE) in a wireless communication system, the method comprising:
receiving a message requesting transmission of inter-UE coordination information from a second UE, wherein the message includes resource set type information and wherein the resource set type information indicates whether a request for the inter-UE coordination is a request for inter-UE coordination information including preferred resource set information or a request for inter-UE coordination information including non-preferred resource set information;
determining inter-UE coordination information based on the message; and
transmitting the determined inter-UE coordination information to the second UE,
wherein, based on the resource set type information, the inter-UE coordination information includes the preferred resource set information or the non-preferred resource set information, and
wherein the resources not available due to half duplex operation are excluded from the preferred resource set information.
2. The method of claim 1 ,
wherein the message is transmitted through a 2 nd -stage sidelink control information (SCI) transmitted from a physical sidelink shared channel (PSSCH) or transmitted through a medium access control (MAC) control element (CE).
3. The method of claim 1 ,
wherein the first UE is configured as a UE that transmits inter-UE coordination information for sidelink communication through pre-configuration.
4. The method of claim 1 ,
wherein the first UE or the second UE is configured to transmit or receive inter-UE coordination information according to the inter-UE coordination method 1 among the inter-UE coordination method 1 or the inter-UE coordination method 2 through pre-configuration,
wherein the inter-UE coordination method 1 is a method in which inter-UE coordination is performed through inter-UE coordination information including resource set information, and
wherein the inter-UE coordination method 2 is a method in which inter-UE coordination is performed through inter-UE coordination information including whether resource collision exists.
5. A method performed by a second UE in a wireless communication system, the method comprising:
transmitting a message requesting transmission of inter-UE coordination information to a first UE, wherein the message includes resource set type information and wherein the resource set type information indicates whether a request for the inter-UE coordination is a request for inter-UE coordination information including preferred resource set information or a request for inter-UE coordination information including non-preferred resource set information; and
receiving inter-UE coordination information determined based on the message from the first UE,
wherein, based on the resource set type information, the inter-UE coordination information includes the preferred resource set information or the non-preferred resource set information, and
wherein the resources not available due to half duplex operation are excluded from the preferred resource set information.
6. The method of claim 5 ,
wherein the message is transmitted through a 2 nd -stage sidelink control information (SCI) transmitted from a physical sidelink shared channel (PSSCH) or transmitted through a medium access control (MAC) control element (CE).
7. The method of claim 5 ,
wherein the second UE is configured as a UE that receives inter-UE coordination information for sidelink communication through pre-configuration.
8. The method of claim 5 ,
wherein the first UE or the second UE is configured to transmit or receive inter-UE coordination information according to the inter-UE coordination method 1 among the inter-UE coordination method 1 or the inter-UE coordination method 2 through pre-configuration,
wherein the inter-UE coordination method 1 is a method in which inter-UE coordination is performed through inter-UE coordination information including resource set information, and
wherein the inter-UE coordination method 2 is a method in which inter-UE coordination is performed through inter-UE coordination information including whether resource collision exists.
9. A first user equipment (UE) in a wireless communication system, the first UE comprising:
a transceiver; and
at least one processor configured to:
receive a message requesting transmission of inter-UE coordination information from a second UE, wherein the message includes resource set type information and wherein the resource set type information indicates whether a request for the inter-UE coordination is a request for inter-UE coordination information including preferred resource set information or a request for inter-UE coordination information including non-preferred resource set information,
determine inter-UE coordination information based on the message, and
transmit the determined inter-UE coordination information to the second UE,
wherein, based on the resource set type information, the inter-UE coordination information includes the preferred resource set information or the non-preferred resource set information, and
wherein the resources not available due to half duplex operation are excluded from the preferred resource set information.
10. The first UE of claim 9 ,
wherein the message is transmitted through a 2 nd -stage sidelink control information (SCI) transmitted from a physical sidelink shared channel (PSSCH) or transmitted through a medium access control (MAC) control element (CE).
11. The first UE of claim 9 ,
wherein the first UE is configured as a UE that transmits inter-UE coordination information for sidelink communication through pre-configuration.
12. The first UE of claim 9 ,
wherein the first UE or the second UE is configured to transmit or receive inter-UE coordination information according to the inter-UE coordination method 1 among the inter-UE coordination method 1 or the inter-UE coordination method 2 through pre-configuration,
wherein the inter-UE coordination method 1 is a method in which inter-UE coordination is performed through inter-UE coordination information including resource set information, and
wherein the inter-UE coordination method 2 is a method in which inter-UE coordination is performed through inter-UE coordination information including whether resource collision exists.
13. A second user equipment (UE) in a wireless communication system, the second UE comprising:
a transceiver; and
at least one processor configured to:
transmit a message requesting transmission of inter-UE coordination information to a first UE, wherein the message includes resource set type information and wherein the resource set type information indicates whether a request for the inter-UE coordination is a request for inter-UE coordination information including preferred resource set information or a request for inter-UE coordination information including non-preferred resource set information, and
receive inter-UE coordination information determined based on the message from the first UE,
wherein, based on the resource set type information, the inter-UE coordination information includes the preferred resource set information or the non-preferred resource set information, and
wherein the resources not available due to half duplex operation are excluded from the preferred resource set information.
14. The second UE of claim 13 ,
wherein the message is transmitted through a 2 nd -stage sidelink control information (SCI) transmitted from a physical sidelink shared channel (PSSCH) or transmitted through a medium access control (MAC) control element (CE).
15. The second UE of claim 13 ,
wherein the second UE is configured as a UE that receives inter-UE coordination information for sidelink communication through pre-configuration.
16. The second UE of claim 13 ,
wherein the first UE or the second UE is configured to transmit or receive inter-UE coordination information according to the inter-UE coordination method 1 among the inter-UE coordination method 1 or the inter-UE coordination method 2 through pre-configuration,
wherein the inter-UE coordination method 1 is a method in which inter-UE coordination is performed through inter-UE coordination information including resource set information, and
wherein the inter-UE coordination method 2 is a method in which inter-UE coordination is performed through inter-UE coordination information including whether resource collision exists.