Resource configuration for integrated access and backhaul radio access network sharing
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may transmit, to first central unit (CU) that corresponds to an integrated access and backhaul (IAB) donor, an indication of a first resource configuration for communications corresponding to a cell served by the network node and associated with a second CU that corresponds to a base station. The network node may receive, from the first CU, a second resource configuration comprising a distributed unit (DU) cell resource configuration for the cell. Numerous other aspects are described.
1. A network node for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
transmit, to a first central unit (CU) that corresponds to an integrated access and backhaul (IAB) donor, an indication of a first resource configuration for communications corresponding to a cell served by the network node, the first resource configuration being configured by a second CU that corresponds to a base station; and
receive, from the first CU, a second resource configuration for communications corresponding to the cell, the second resource configuration being configured in accordance with the first resource configuration, and the second resource configuration comprising a distributed unit (DU) cell resource configuration for the cell.
2. The network node of claim 1 , wherein at least one of the first resource configuration or the DU cell resource configuration is specific to a child node served by the cell.
3. The network node of claim 1 , wherein the first CU is associated with a first network and the second CU is associated with a second network.
4. The network node of claim 1 , wherein the first CU is associated with resource management for an IAB network including the network node, and wherein traffic associated with the second CU is transported via the IAB network.
5. The network node of claim 1 , wherein the cell is associated with a cell identifier that identifies the base station.
6. The network node of claim 1 , wherein at least one of the first resource configuration or the second resource configuration indicates at least one of a time resource, a frequency resource, or a spatial resource.
7. The network node of claim 1 , wherein the first resource configuration comprises a cell-specific time division duplex uplink and downlink configuration.
8. The network node of claim 1 , wherein the first resource configuration comprises an intended cell-specific time division duplex (TDD) uplink and downlink configuration, wherein the intended cell-specific TDD uplink and downlink configuration comprises a repurposed format associated with cross-link interference mitigation.
9. The network node of claim 1 , wherein the one or more processors are further configured to transmit, to the first CU, at least a portion of a system information block 1 (SIB1) message associated with the cell.
10. The network node of claim 1 , wherein the one or more processors are further configured to:
receive, from the second CU, a child-specific time division duplex (TDD) uplink and downlink configuration associated with a child node served on the cell; and
forward the child-specific TDD uplink and downlink configuration to the first CU,
wherein the second resource configuration is based at least in part on the child-specific TDD uplink and downlink configuration.
11. The network node of claim 1 , wherein the second resource configuration is based at least in part on a downlink-uplink flexible (DUF) configuration having a conflict level with one or more non-flexible resources of the first resource configuration that satisfies a conflict criterion.
12. The network node of claim 1 , wherein the second resource configuration is based at least in part on an indication of availability of one or more resources for at least one communication associated with the second CU.
13. The network node of claim 1 , wherein the one or more processors are further configured to:
transmit a suggested downlink-uplink flexible (DUF) configuration to the first CU, wherein the second resource configuration is based at least in part on the suggested DUF configuration, or
transmit a suggested availability indication configuration to the first CU, wherein the second resource configuration is based at least in part on the suggested availability indication configuration.
14. The network node of claim 1 , wherein the one or more processors are further configured to:
transmit an indication of one or more conflicts between the second resource configuration and a third resource configuration associated with at least one of the cell or the second CU; and
receive a modified second resource configuration, wherein the modified second resource configuration is based at least in part on the indication of the one or more conflicts.
15. The network node of claim 1 , wherein the one or more processors are further configured to transmit, to the second CU, an indication of a third DU cell resource configuration based at least in part on the DU cell resource configuration.
16. The network node of claim 15 , wherein the third DU cell resource configuration comprises at least a portion of the DU cell resource configuration.
17. The network node of claim 15 , wherein the one or more processors are further configured to:
receive, from the second CU, a child-specific time division duplex (TDD) configuration for a child node; and
determine at least one conflict between the DU cell resource configuration and the child-specific TDD configuration,
wherein the one or more processors, to transmit the indication of the third DU cell resource configuration, are configured to transmit the indication of the third DU cell resource configuration based at least in part on determining the at least one conflict.
18. The network node of claim 17 , wherein the third DU cell resource configuration comprises the child-specific TDD configuration.
19. The network node of claim 15 , wherein the one or more processors are further configured to generate, based at least in part on the DU cell resource configuration, a cell-specific time division duplex (TDD) configuration for uplink and downlink communications associated with the cell.
20. The network node of claim 19 , wherein the third DU cell resource configuration comprises the cell-specific TDD configuration.
21. A first central unit (CU) for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
receive, from an integrated access-backhaul (IAB) node, an indication of a first resource configuration for communications corresponding to a cell served by the IAB node, the first resource configuration being configured by a second CU that corresponds to a base station; and
transmit, to the IAB node, a second resource configuration for communications corresponding to the cell, the second resource configuration being configured in accordance with the first resource configuration, and the second resource configuration comprising a distributed unit (DU) cell resource configuration for the cell.
22. The first CU of claim 21 , wherein the one or more processors are further configured to generate the second resource configuration.
23. The first CU of claim 21 , wherein at least one of the first resource configuration or the DU cell resource configuration is specific to a child node served by the cell.
24. The first CU of claim 21 , wherein the first CU is associated with a first network and the second CU is associated with a second network.
25. The first CU of claim 21 , wherein the first CU is associated with resource management for an IAB network including the IAB node, and wherein traffic associated with the second CU is transported via the IAB network.
26. The first CU of claim 21 , wherein the cell is associated with a cell identifier that identifies the base station.
27. The first CU of claim 21 , wherein at least one of the first resource configuration or the second resource configuration indicates at least one of:
a time resource,
a frequency resource, or
a spatial resource.
28. The first CU of claim 21 , wherein the first resource configuration comprises a cell-specific time division duplex uplink and downlink configuration.
29. A method of wireless communication performed by a network node, comprising:
transmitting, to a first central unit (CU) that corresponds to an integrated access and backhaul (IAB) donor, an indication of a first resource configuration for communications corresponding to a cell served by the network node, the first resource configuration being configured by a second CU that corresponds to a base station; and
receiving, from the first CU, a second resource configuration for communications corresponding to the cell, the second resource configuration being configured in accordance with the first resource configuration, and the second resource configuration comprising a distributed unit (DU) cell resource configuration for the cell.
30. A method of wireless communication performed by a first central unit (CU) associated with an integrated access and backhaul (IAB) donor, comprising:
receiving, from an IAB node, an indication of a first resource configuration for communications corresponding to a cell served by the IAB node, the first resource configuration being configured by a second CU that corresponds to a base station; and
transmitting, to the IAB node, a second resource configuration for communications corresponding to the cell, the second resource configuration being configured in accordance with the first resource configuration, and the second resource configuration comprising a distributed unit (DU) cell resource configuration for the cell.