Conditional release of soft resources in an integrated access and backhaul network

Patent metadata

Field	Value
Publication number	US-12309874-B2
Application number	US-202217838633-A
Country	US
Kind code	B2
Filing date	Jun 13, 2022
Priority date	Nov 1, 2018
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

In some aspects, a node may configure whether a set of soft time resources is to be conditionally released or unconditionally released. The set of soft time resources may be configurable in a schedulable state or a non-schedulable state. The set of soft time resources may be schedulable subject to at most a directionality constraint when unconditionally released and, when conditionally released, being schedulable subject to: the directionality constraint and one or more conditions other than the directionality constraint if the set of soft resources is configured subject to the directionality constraint, or at least one of the directionality constraint or the one or more conditions other than the directionality constraint if the set of soft resources is not configured subject to the directionality constraint. The node may transmit a configuration that indicates whether the set of soft time resources is conditionally released or unconditionally released in the schedulable state.

First claim

What is claimed is:

1. A method of wireless communication performed at a node in an integrated access and backhaul (IAB) network, comprising:
configuring whether a set of soft resources is to be conditionally released or unconditionally released,
the set of soft resources being configurable in a schedulable state or a non-schedulable state, and
the set of soft resources being schedulable subject to at most a directionality constraint when unconditionally released and, when conditionally released, being schedulable subject to:
the directionality constraint and one or more conditions other than the directionality constraint if the set of soft resources is configured subject to the directionality constraint, or
at least one of the directionality constraint or the one or more conditions other than the directionality constraint if the set of soft resources is not configured subject to the directionality constraint; and

transmitting a configuration that indicates whether the set of soft resources is conditionally released or unconditionally released in the schedulable state.

2. The method of claim 1 , wherein the configuration indicates the one or more conditions when the configuration indicates that the set of soft resources is to be conditionally released.

3. The method of claim 1 , wherein the one or more conditions include at least one of:
a timing reference constraint for one or more communications scheduled using one or more resources of the set of soft resources,
a transmit power constraint for the one or more communications,
a receive power constraint for the one or more communications,
a reference signal pattern constraint for the one or more communications,
a spatial resource constraint for the one or more communications,
a frequency resource constraint for the one or more communications,
a modulation and coding scheme (MCS) constraint for the one or more communications,
a constraint on a type of signal permitted for the one or more communications,
a constraint on a type of channel permitted to be used to transmit the one or more communications, or
a combination thereof.

4. The method of claim 1 , wherein the node is a centralized unit (CU) or a parent node in the IAB network.

5. The method of claim 1 , wherein at least one of the configuration of whether the set of soft resources is to be conditionally released or unconditionally released or a determination of the one or more conditions is based at least in part on at least one of:
a capability of a parent node from which the set of soft resources is to be released,
a capability of a child node for which the set of soft resources is to be released,
a topology associated with the IAB network, the parent node, or the child node,
a traffic demand associated with the IAB network, the parent node, or the child node,
a resource utilization of the parent node or the child node, or
a combination thereof.

6. The method of claim 1 , wherein the configuration is indicated via at least one of:
an interface between a centralized unit and a parent node of the IAB network,
an interface between the parent node and a child node of the parent node,
a radio resource control message,
downlink control information,
a media access control (MAC) control element,
a system information block, or
a combination thereof.

7. The method of claim 1 , wherein the configuration applies to all wireless nodes controlled by the node.

8. The method of claim 1 , wherein the configuration is different from another configuration used in a different part of the IAB network.

9. The method of claim 1 , wherein the configuration is specific to the set of soft resources.

10. The method of claim 1 , wherein the configuration is specific to a time period.

11. The method of claim 1 , wherein the set of soft resources comprises one of a set of soft spatial resources or a set of soft frequency resources.

12. A method of wireless communication performed at a node in an integrated access and backhaul (IAB) network, comprising:
receiving a configuration that indicates whether a set of soft resources is conditionally released or unconditionally released in a schedulable state,
the set of soft resources being configurable in the schedulable state or a non-schedulable state, and
the set of soft resources being schedulable subject to at most a directionality constraint when unconditionally released and, when conditionally released, being schedulable subject to:
the directionality constraint and one or more conditions other than the directionality constraint if the set of soft resources is configured subject to the directionality constraint, or
at least one of the directionality constraint or the one or more conditions other than the directionality constraint if the set of soft resources is not configured subject to the directionality constraint; and

communicating using one or more soft resources of the set of soft resources, based at least in part on whether the set of soft resources is conditionally released or unconditionally released.

13. The method of claim 12 , wherein communicating using the one or more soft resources comprises communicating using the one or more soft resources subject to at most the directionality constraint when the configuration indicates that the set of soft resources is to be unconditionally released.

14. The method of claim 12 , wherein communicating using the one or more soft resources comprises communicating using the one or more soft resources subject to the directionality constraint and the one or more conditions other than the directionality constraint when the configuration indicates that the set of soft resources is to be conditionally released and when the set of soft resources is configured subject to the directionality constraint.

15. The method of claim 12 , wherein communicating using the one or more soft resources comprises communicating using the one or more soft resources subject to at least one of the directionality constraint or the one or more conditions other than the directionality constraint when the configuration indicates that the set of soft resources is to be conditionally released and when the set of soft resources is not configured subject to the directionality constraint.

16. The method of claim 12 , wherein the configuration indicates the one or more conditions when the configuration indicates that the set of soft resources is to be conditionally released.

17. The method of claim 12 , wherein the one or more conditions include at least one of:
a timing reference constraint for one or more communications scheduled using the one or more soft resources,
a transmit power constraint for the one or more communications,
a receive power constraint for the one or more communications,
a reference signal pattern constraint for the one or more communications,
a spatial resource constraint for the one or more communications,
a frequency resource constraint for the one or more communications,
a modulation and coding scheme (MCS) constraint for the one or more communications,
a constraint on a type of signal permitted for the one or more communications,
a constraint on a type of channel permitted to be used to transmit the one or more communications, or
a combination thereof.

18. The method of claim 12 , wherein the node is a child node in the IAB network.

19. The method of claim 12 , wherein the configuration is indicated via at least one of:
an interface between a parent node and the node,
a radio resource control message,

Assignees

• Qualcomm Inc

Inventors

• Abedini Navid
• Luo Jianghong
• Blessent Luca
• Islam Muhammad Nazmul
• Hampel Karl Georg
• Luo Tao
• Li Junyi

Classifications

• H04W72/0473

  the resource being transmission power · CPC title

• H04L1/0003

  by switching between different modulation schemes · CPC title

• H04W80/02

  Data link layer protocols · CPC title

• H04W72/0446 Primary

  Resources in time domain, e.g. slots or frames · CPC title

• H04L1/0009

  by adapting the channel coding (H04L1/1812 takes precedence) · CPC title