Method and apparatus for determining availability of resource in wireless communication system
The disclosure proposes a resource determination method performed by a communication node in a wireless communication system and a communication node using the method. The method may be a method performed for an IAB system.
1. A method for determining an availability of a resource in a wireless communication system, the method performed by a communication node and comprising:
receiving synchronization signal block (SSB) configuration information, wherein the SSB configuration information informs a SSB transmission resource on which the communication node is capable of transmitting a SSB,
receiving resource configuration information, wherein the resource configuration information informs a link direction and an availability of a time resource of the communication node, where the time resource is related to a link between the communication node and a child node of the communication node, and
determining an availability of a specific resource which is included in both of the time resource and the SSB transmission resource based on the SSB configuration and the resource configuration information,
wherein the availability of the specific resource is determined as being always available.
2. The method of claim 1 , wherein the communication node transmits a downlink signal on the specific resource.
3. The method of claim 2 , wherein the downlink signal is the SSB.
4. The method of claim 2 , wherein the specific resource is a resource of which a link direction is configured to downlink based on the resource configuration information.
5. The method of claim 1 , wherein the specific resource is a resource of which an availability is configured to be controlled by a parent node of the communication node based on the resource configuration information.
6. The method of claim 5 , wherein the availability of the specific resource is controlled by downlink control information (DCI) transmitted by the parent node to the communication node.
7. The method of claim 1 , wherein the communication node re-configures a link direction of the specific resource, and the link direction of the specific resource is re-configured to downlink.
8. The method of claim 7 , wherein the time resource is a resource of which the link direction is configured to downlink, uplink, or flexible based on the resource configuration information.
9. The method of claim 1 , wherein the availability of the time resource is one of always available, unavailable, and availability configured to be controlled by a parent node of the communication node based on the resource configuration information.
10. The method of claim 1 , wherein the resource configuration information is transmitted through system information or a radio resource control (RRC) message.
11. The method of claim 1 , wherein the SSB is at least one of a backhaul SSB and an access SSB.
12. The method of claim 1 , wherein the SSB transmission resource is periodically configured in a time domain.
13. The method of claim 1 , wherein the communication node is an integrated access and backhaul (IAB) node comprising a base station and a user equipment (UE).
14. The method of claim 1 , wherein the specific resource is a resource in slots.
15. A communication node comprising:
at least one memory configured to store instructions;
at least one transceiver; and
at least one processor to connect the at least one memory and the at least one transceiver,
wherein the at least one processor is configured to execute the instructions to:
receive synchronization signal block (SSB) configuration information, wherein the SSB configuration information informs a SSB transmission resource on which the communication node is capable of transmitting a SSB,
receive resource configuration information, wherein the resource configuration information informs a link direction and an availability of a time resource of the communication node, where the time resource is related to a link between the communication node and a child node of the communication node, and
determine an availability of a specific resource which is included in both of the time resource and the SSB transmission resource based on the SSB configuration and the resource configuration information,
wherein the availability of the specific resource is determined as being always available.
16. The communication node of claim 15 , wherein the communication node is configured to communicate with at least one of a mobile terminal, a network, and an autonomous driving vehicle other than the communication node.
17. An apparatus configured to control a communication node, the apparatus comprising:
at least one processor; and
at least one memory configured to be operatively connected to the at least one processor and to store instructions,
wherein the at least one processor is configured to execute the instructions to:
receive synchronization signal block (SSB) configuration information, wherein the SSB configuration information informs a SSB transmission resource on which the communication node is capable of transmitting a SSB,
receive resource configuration information, wherein the resource configuration information informs a link direction and an availability of a time resource of the communication node, where the time resource is related to a link between the communication node and a child node of the communication node, and
determine an availability of a specific resource which is included in both of the time resource and the SSB transmission resource based on the SSB configuration and the resource configuration information,
wherein the availability of the specific resource is determined as being always available.
18. The apparatus of claim 17 , wherein the communication node is configured to communicate with at least one of a mobile terminal, a network, and an autonomous driving vehicle other than the communication node.