Signaling enhancements for simultaneous multiplexing in an integrated access and backhaul network

Patent metadata

Field	Value
Publication number	US-12376096-B2
Application number	US-202117445071-A
Country	US
Kind code	B2
Filing date	Aug 13, 2021
Priority date	Aug 13, 2021
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

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.

First claim

What is claimed is:

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.

Assignees

• Qualcomm Inc

Inventors

• Luo Jianghong
• Abedini Navid
• Blessent Luca
• Luo Tao
• Akl Naeem
• Li Junyi
• Hampel Karl Georg

Classifications

• H04B7/0695

  using beam selection · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04B7/15542

  Selecting at relay station its transmit and receive resources (selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003) · CPC title

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04B7/088

  using beam selection · CPC title