Network nodes and methods for handling resource configurations
The present disclosure relates in general to cellular radio network communication. In one of its aspects, the technology presented herein concerns a method performed by a network node in a wireless communication system for handling resource configurations for network nodes in an Integrated Access and Backhaul (IAB) network. The network node is connected to a core network of the wireless communications system and to at least one radio network node. The method includes providing, to a first radio network node and to at least one second radio network node, a message indicating a resource configuration for the first radio network node. The at least one second radio network node is a parent node to the first radio network node and the first radio network node is a child node to the at least one second radio network node.
1. A method, performed by a network node in a wireless communication system, for handling resource configurations for radio network nodes in an Integrated Access and Backhaul, IAB, network, the network node being connected to a core network of the wireless communications system and to at least one radio network node, the method comprising:
providing, to a first radio network node and to a plurality of second radio network nodes, a message indicating a resource configuration for the first radio network node, each of the plurality of second radio network nodes being a parent node to the first radio network node and the first radio network node being a child node to each of the plurality of second radio network nodes;
the providing the message indicating the resource configuration to the first radio network node including:
embedding the message including the resource configuration for the first radio network node in a message that is to be sent to the plurality of second radio network nodes, the embedded message being forwarded to the first radio network node by at least one of the plurality of second radio network nodes; and
sending, to the plurality of second radio network nodes, the message including the resource configuration for the first radio network node, the message indicating the resource configuration to the first radio network node being an application protocol message that is sent over an F1 interface, and the embedded message being an F1 application protocol message.
2. The method according to claim 1 , wherein the network node has a wired connection to the core network of the wireless communication system and a wireless connection to the at least one radio network node.
3. The method according to claim 1 , wherein the resource indication message is an application protocol message, which is sent over an F1 interface.
4. The method according to claim 1 , wherein both the embedded message and the message including the resource configuration for the first radio network node comprise the resource configuration for the first radio network node.
5. The method according to claim 1 , wherein the embedded message is embedded in a transparent container in the message sent to the plurality of second radio network nodes.
6. A method, performed by a first radio network node in a wireless communication system, for handling resource configurations for radio network nodes in an Integrated Access and Backhaul, IAB, network, the first radio network node being connected to a plurality of second radio network nodes of the wireless communication system, the method comprising:
receiving, from each of the second radio network nodes, a resource indication message comprising the resource configuration for the first network node, each of the plurality of second network nodes being a parent node to the first network node; and
the received message being an F1 application protocol message encapsulated in an adaption header including header information according to an F1 interface, such that the first radio network node handles the F1 application protocol message as an application protocol message received over an F1 interface.
7. The method according to claim 6 , wherein the method further comprises:
applying the resource configuration.
8. A network node in a wireless communication system, for handling resource configurations for radio network nodes in an Integrated Access and Backhaul, IAB, network, the network node being connected to a core network of the wireless communications system and to at least one radio network node, the network node comprising processing circuitry being configured to:
provide, to a first radio network node and to a plurality of second radio network nodes, a message indicating a resource configuration for the first radio network node, each of the plurality of second radio network nodes being a parent node to the first radio network node and the first radio network node being a child node to each of the plurality of second radio network nodes;
the providing the message indicating the resource configuration to the first radio network node including:
embedding the message including the resource configuration for the first radio network node in a message that is to be sent to the plurality of second radio network nodes, the embedded message being forwarded to the first radio network node by at least one of the plurality of second radio network nodes; and
sending, to the plurality of second radio network nodes, the message including the resource configuration for the first radio network node, the message indicating the resource configuration to the first radio network node being an application protocol message that is sent over an F1 interface, and the embedded message being an F1 application protocol message.
9. The network node according to claim 8 , wherein the network node has a wired connection to the core network of the wireless communication system and a wireless connection to the at least one radio network node.