Signaling enhancements for simultaneous multiplexing in an integrated access and backhaul network
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a parent node in an integrated access and backhaul (IAB) network may transmit, to an IAB node having a mobile termination function (IAB-MT) and a distributed unit (IAB-DU), signaling indicating a set of restricted IAB-DU beams and associating the set of restricted IAB-DU beams with one or more IAB-MT beams, the set of restricted IAB-DU beams determined based on measurements related to interference caused by the IAB-DU and the IAB-MT performing a simultaneous operation in one or more simultaneous multiplexing modes. Additionally or alternatively, the parent node may perform scheduling for the IAB-MT based on signaling received from the IAB node that indicates beam-specific parameters related to a multiplexing capability for a beam pair that includes an IAB-MT beam and an IAB-DU beam associated with the IAB-MT beam. Numerous other aspects are provided.
1. A PARENT NODE, COMPRISING:
at least one processor; and
at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, is configured to cause the parent node to:
receive, from an integrated access and backhaul (IAB) node that includes a distributed unit (IAB-DU) and a mobile termination function (IAB-MT), signaling that indicates one or more beam-specific parameters related to a multiplexing capability for a beam pair that includes an IAB-MT beam and an IAB-DU beam associated with the IAB-MT beam, wherein the one or more beam-specific parameters indicate that the beam pair supports one or more simultaneous multiplexing modes, the one or more simultaneous multiplexing modes including one or more of: a simultaneous half-duplexing mode, or a simultaneous full-duplexing mode, wherein the signaling received from the IAB node includes a request to switch the beam pair from a first simultaneous multiplexing mode of the one or more simultaneous multiplexing modes to a second simultaneous multiplexing mode of the one or more simultaneous multiplexing modes; and
transmit, to the IAB node, one or more scheduling parameters for the IAB-MT based at least in part on the signaling that indicates the one or more beam-specific parameters.
2. The parent node of claim 1 , wherein the one or more beam-specific parameters include a time scale associated with the switch.
3. The parent node of claim 1 , wherein the one or more beam-specific parameters include one or more constraints on resource utilization over the IAB-MT beam included in the beam pair.
4. The parent node of claim 1 , wherein the one or more beam-specific parameters include a time-frequency resource pattern to associate with the IAB-MT beam included in the beam pair.
5. The parent node of claim 1 , wherein the one or more beam-specific parameters indicate one or more IAB-DU beams or IAB-DU child links that are requested to be associated with or restricted from being associated with the IAB-MT beam included in the beam pair.
6. The parent node of claim 1 , wherein the signaling that indicates the one or more beam-specific parameters includes F1application protocol (F1-AP) signaling, a medium access control (MAC) control element (MAC-CE), or uplink control information (UCI) that indicates the one or more beam-specific parameters.
7. The parent node of claim 1 , wherein the one or more scheduling parameters configure, at one or more of the parent node or the IAB node, each respective time resource of a plurality of time resources as one of a hard resource, a soft resource, or a not available resource.
8. The parent node of claim 1 , wherein the one or more scheduling parameters configure, at one or more of the parent node or the IAB node, each respective time resource of a plurality of time resources as one of a downlink-only resource, an uplink-only resource, or a flexible resource.
9. The parent node of claim 1 , wherein the one or more simultaneous multiplexing modes include the simultaneous half-duplexing mode, and wherein the simultaneous half-duplexing mode comprises the IAB-MT receiving a signal from the parent node using an IAB-MT beam and the IAB-DU simultaneously receiving a signal from a child node using an IAB-DU beam.
10. An integrated access and backhaul (IAB) node that includes a distributed unit (IAB-DU) and a mobile termination function (IAB-MT), comprising:
at least one processor; and
at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, is configured to cause the IAB node to:
transmit, to a parent node, signaling that indicates one or more beam-specific parameters related to a multiplexing capability for a beam pair that includes an IAB-MT beam and an IAB-DU beam associated with the IAB-MT beam, wherein the one or more beam-specific parameters indicate that the beam pair supports one or more simultaneous multiplexing modes, the one or more simultaneous multiplexing modes including one or more of: a simultaneous half-duplexing mode, or a simultaneous full-duplexing mode, wherein the signaling received from the IAB node includes a request to switch the beam pair from a first simultaneous multiplexing mode of the one or more simultaneous multiplexing modes to a second simultaneous multiplexing mode of the one or more simultaneous multiplexing modes; and
receive, from the parent node, one or more scheduling parameters for the IAB-MT based at least in part on the signaling that indicates the one or more beam-specific parameters.
11. The IAB node of claim 10 , wherein the one or more beam-specific parameters include a time scale associated with the switch.
12. The IAB node of claim 10 , wherein the one or more beam-specific parameters include one or more constraints on resource utilization over the IAB-MT beam included in the beam pair.
13. The IAB node of claim 10 , wherein the one or more beam-specific parameters include a time-frequency resource pattern to associate with the IAB-MT beam included in the beam pair.
14. The IAB node of claim 10 , wherein the one or more beam-specific parameters indicate one or more IAB-DU beams or IAB-DU child links that are requested to be associated with or restricted from being associated with the IAB-MT beam included in the beam pair.
15. The IAB node of claim 10 , wherein the signaling that indicates the one or more beam-specific parameters includes f1application protocol (f1-AP) signaling, a medium access control (MAC) control element (MAC-CE), or uplink control information (UCI) that indicates the one or more beam-specific parameters.
16. The IAB node of claim 10 , wherein the one or more scheduling parameters configure each respective time resource of a plurality of time resources at the IAB NODE as one of a hard resource, a soft resource, or a not available resource.
17. The IAB node of claim 10 , wherein the one or more scheduling parameters configure each respective time resource of a plurality of time resources at the IAB node as one of a downlink-only resource, an uplink-only resource, or a flexible resource.
18. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a parent node, cause the parent node to:
receive, from an integrated access and backhaul (IAB) node that includes a distributed unit (IAB-DU) and a mobile termination function (IAB-MT), signaling that indicates one or more beam-specific parameters related to a multiplexing capability for a beam pair that includes an IAB-MT beam and an IAB-DU beam associated with the IAB-MT beam, wherein the one or more beam-specific parameters indicate that the beam pair supports one or more simultaneous multiplexing modes, the one or more simultaneous multiplexing modes including one or more of: a simultaneous half-duplexing mode, or a simultaneous full-duplexing mode, wherein the signaling received from the IAB node includes a request to switch the beam pair from a first simultaneous multiplexing mode of the one or more simultaneous multiplexing modes to a second simultaneous multiplexing mode of the one or more simultaneous multiplexing modes; and
transmit, to the IAB node, one or more scheduling parameters for the IAB-MT based at least in part on the signaling that indicates the one or more beam-specific parameters.
19. The non-transitory computer-readable medium of claim 8 , wherein the one or more beam-specific parameters indicate one or more IAB-DU beams or IAB-DU child links that are requested to be associated with or restricted from being associated with the IAB-MT beam included in the beam pair.
20. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of an integrated access and backhaul (IAB) node, cause the IAB node to:
transmit, to a parent node, signaling that indicates one or more beam-specific parameters related to a multiplexing capability for a beam pair that includes a mobile termination function (IAB-MT) beam and a distributed unit (DU) beam associated with the IAB-MT beam, wherein the one or more beam-specific parameters indicate that the beam pair supports one or more simultaneous multiplexing modes, the one or more simultaneous multiplexing modes including one or more of: a simultaneous half-duplexing mode, or a simultaneous full-duplexing mode, wherein the signaling received from the IAB node includes a request to switch the beam pair from a first simultaneous multiplexing mode of the one or more simultaneous multiplexing modes to a second simultaneous multiplexing mode of the one or more simultaneous multiplexing modes; and
receive, from the parent node, one or more scheduling parameters for an IAB-MT based at least in part on the signaling that indicates the one or more beam-specific parameters.
21. The non-transitory computer-readable medium of claim 20 , wherein the one or more beam-specific parameters indicate one or more DU beams or du child links that are requested to be associated with or restricted from being associated with the IAB-MT beam included in the beam pair.
22. The non-transitory computer-readable medium of claim 20 , wherein the one or more beam-specific parameters include a time-frequency resource pattern to associate with the IAB-MT beam included in the beam pair.
23. The non-transitory computer-readable medium of claim 18 , wherein the one or more beam-specific parameters include one or more constraints on resource utilization over the IAB-MT beam included in the beam pair.
24. The non-transitory computer-readable medium of claim 18 , wherein the signaling that indicates the one or more beam-specific parameters includes f1 application protocol (f1-AP) signaling, a medium access control (MAC) control element (MAC-CE), or uplink control information (UCI) that indicates the one or more beam-specific parameters.
25. The non-transitory computer-readable medium of claim 18 , wherein the one or more scheduling parameters configure each respective time resource of a plurality of time resources at the IAB node as one of a hard resource, a soft resource, or a not available resource.
26. The non-transitory computer-readable medium of claim 20 , wherein the one or more scheduling parameters configure each respective time resource of a plurality of time resources at the IAB node as one of a hard resource, a soft resource, or a not available resource.