Self organizing network report handling in mobile integrated access and backhaul scenarios
A method performed by a first network node includes obtaining information associated with a Self Organizing Network (SON) report associated with a wireless device. The first network node determines that the information associated with the SON report is associated with a cell that is not served by the first network node. In response to determining that the information associated with the SON report is associated with the cell that is not served by the first network node, the first network node takes at least one action that includes deleting the information and/or transmitting the information to a second network node.
1 . A method performed by a first network node serving as a donor central unit, CU, for at least one Integrated Access and Backhaul, IAB, distributed unit, DU, node in an IAB network, the method comprising:
obtaining information associated with a Self Organizing Network, SON, report associated with a wireless device;
determining, by the first network node serving as the donor CU for the IAB DU node in the IAB network, that the information associated with the SON report is associated with a cell that is not served by the first network node;
determining that the cell is associated with a mobile IAB node; and
in response to determining that the information associated with the SON report is associated with the cell that is not served by the first network node and in response to determining that the cell is associated with the mobile IAB node, taking at least one action comprising:
deleting the information; or
transmitting the information to a second network node.
2 . The method of claim 1 , wherein at least one of:
the SON report comprises a link failure report;
the link failure report comprises a handover failure report or a radio link failure, RLF, report; and
the SON report is associated with a Random Access procedure.
3 . The method of claim 1 , wherein the second network node comprises an IAB DU node that was not served by the first network node when the information is obtained, and wherein the second network node is currently serving the cell; and, further comprising:
storing a handover history of at least one additional node in the IAB network; and
determining based on the handover history that the at least one additional network node has been handed over to the second network node, and
wherein the information is transmitted to the second network node based on the handover history indicating that the at least one additional network node has been handed over to the second network node.
4 . The method of claim 1 , wherein transmitting the information associated with the SON report to the second network node comprises transmitting the information associated with the SON report to a core network node for forwarding to at least one additional network.
5 . A first network node serving as a donor central unit, CU, for at least one Integrated Access and Backhaul, IAB, distributed unit, DU, node in an IAB network, the first network node comprising:
processing circuitry configured to:
obtain information associated with a Self Organizing Network, SON, report associated with a wireless device;
determine that the information associated with the SON report is associated with a cell that is not served by the first network node;
determining that the cell is associated with a mobile IAB node; and
in response to determining that the information associated with the SON report is associated with the cell that is not served by the first network node and in response to determining that the cell is associated with a mobile IAB, take at least one action comprising:
deleting the information; or
transmitting the information to a second network node.
6 . The first network node of claim 5 , wherein at least one of:
the SON report comprises a link failure report;
the link failure report comprises a handover failure report or a radio link failure, RLF, report; and
the SON report is associated with a Random Access procedure.
7 . The first network node of claim 5 , wherein the second network node comprises an IAB DU node that was not served by the first network node when the information is obtained, and wherein the second network node is currently serving the cell.
8 . The first network node of claim 5 , wherein the processing circuitry is configured to:
store a handover history of at least one additional node in the IAB network; and
determine based on the handover history that the at least one additional network node has been handed over to the second network node, and
wherein the information is transmitted to the second network node based on the handover history indicating that the at least one additional network node has been handed over to the second network node.
9 . The first network node of claim 5 , wherein when transmitting the information to the second network node the processing circuitry is configured to:
transmit a request for handover information to an OAM node or a core network node;
receive the handover information from the OAM node or the core network node, the handover information indicating that the cell is being served by a second network node; and
transmit the information associated with the SON report to the second network node.
10 . The first network node of claim 5 , wherein when transmitting the information associated with the SON report to the second network node the processing circuitry is configured to transmit the information associated with the SON report to a core network node for forwarding to at least one additional network.