US-20260129475-A1 - TOPOLOGY MANAGEMENT IN WIRELESS ACCESS AND BACKHAULING NETWORKS

US20260129475A1US 20260129475 A1US20260129475 A1US 20260129475A1US-20260129475-A1

Abstract

Methods, systems, and devices for wireless communications are described. A network entity may receive an indication that a first entity is a first wireless access backhaul (WAB) node including a first mobile terminal function and a first network entity function. The network entity may perform one or more actions associated with operation of the first WAB node based at least in part on receiving the indication.

Inventors

Naeem AKL
Karl Georg Hampel
Hong Cheng
Navid Abedini

Assignees

QUALCOMM INCORPORATED

Dates

Publication Date: 20260507
Application Date: 20241105

Claims (20)

1 . A first network entity, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the first network entity to: receive an indication that a first entity is a first wireless access backhaul (WAB) node comprising a first mobile terminal function and a first network entity function; and perform one or more actions associated with operation of the first WAB node based at least in part on receiving the indication.
2 . The first network entity of claim 1 , wherein, to receive the indication, the one or more processors are individually or collectively operable to execute the code to cause the first network entity to: receive, from the first network entity function via an Xn interface, an identifier associated with the first mobile terminal function; wherein the one or more actions comprise modification of scheduling behavior associated with the first WAB node.
3 . The first network entity of claim 2 , wherein the identifier associated with the first mobile terminal function comprises a serving cell identifier associated with the first network entity, a radio network temporary identifier associated with the first mobile terminal function, an identifier assigned to the first mobile terminal function by the first network entity, an internet protocol address of the first mobile terminal function, a temporary mobile subscriber identity of the first mobile terminal function, or any combination thereof.
4 . The first network entity of claim 1 , wherein, to receive the indication, the one or more processors are individually or collectively operable to execute the code to cause the first network entity to: receive, from the first mobile terminal function via a Uu interface, an identifier associated with the first network entity function; wherein the one or more actions comprise modification of scheduling behavior associated with the first WAB node.
5 . The first network entity of claim 4 , wherein the identifier associated with the first network entity function comprises a gNodeB identifier, a cell global identity of a cell associated with the first network entity function, a tracking area code, a tracking area identity, an Xn gNodeB identifier, an internet protocol address, or any combination thereof.
6 . The first network entity of claim 1 , wherein, to receive the indication, the one or more processors are individually or collectively operable to execute the code to cause the first network entity to: receive, from the first network entity function via an Xn interface, an identifier associated with the first WAB node; and receive, from the first mobile terminal function via a Uu interface, the identifier associated with the first WAB node; wherein the one or more actions comprise modifying scheduling behavior associated with the first WAB node.
7 . The first network entity of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the first network entity to: receive, from the first network entity function via an Xn interface, the indication, the indication comprising an identifier associated with the first mobile terminal function; and receive, from a second network entity that serves the first mobile terminal function, a handover preparation indication of a handover operation to handover service of the first mobile terminal function from the second network entity to the first network entity; wherein the first network entity is a second WAB node and the one or more actions comprise rejection of the handover preparation indication.
8 . The first network entity of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the first network entity to: transmit, to the first network entity function via an Xn interface, an indication of one or more cells serviced by the first network entity that are to be omitted from handover measurement reporting or indicated in the handover measurement reporting as having reduced signal strength characteristics, wherein the first network entity is a second WAB node.
9 . The first network entity of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the first network entity to: transmit an indication that one or more physical cell identifiers (PCIs) associated with the first network entity are to be omitted from handover measurement reporting, wherein the first network entity is a second WAB node.
10 . The first network entity of claim 9 , wherein, to transmit the indication that one or more PCIs associated with the first network entity are to be omitted from handover measurement reporting, the one or more processors are individually or collectively operable to execute the code to cause the first network entity to: transmit system information signaling that comprises a flag indicating that the one or more PCIs are to be omitted from handover measurement reporting.
11 . The first network entity of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the first network entity to: receive, from a second network entity that serves the first mobile terminal function, a handover preparation indication of a handover operation to handover service of the first mobile terminal function from the second network entity to the first network entity; and trigger, in response to receiving the indication, a second handover operation to handover the service of the first mobile terminal function.
12 . The first network entity of claim 11 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the first network entity to: transmit, to a core network entity associated with the first network entity and in response to receiving the indication, a path switch request that indicates the first WAB node.
13 . The first network entity of claim 1 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the first network entity to: receive the indication, the indication comprising an activated WAB flag comprised in an Xn interface setup request received from the first network entity function; and establish an Xn interface between the first network entity and the first network entity function.
14 . The first network entity of claim 13 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the first network entity to: reject a subsequent Xn interface setup request that fails to indicate a subsequent activated WAB flag.
15 . The first network entity of claim 13 , wherein the one or more processors are individually or collectively further operable to execute the code to cause the first network entity to: receive, from a second network entity, a subsequent Xn interface setup request that indicates an activated WAB awareness flag; and establish a subsequent Xn interface between the first network entity and the second network entity.
16 . A method for wireless communications at a first network entity, comprising: receiving an indication that a first entity is a first wireless access backhaul (WAB) node comprising a first mobile terminal function and a first network entity function; and performing one or more actions associated with operation of the first WAB node based at least in part on receiving the indication.
17 . The method of claim 16 , wherein receiving the indication comprises: receiving, from the first network entity function via an Xn interface, an identifier associated with the first mobile terminal function; wherein the one or more actions comprise modifying scheduling behavior associated with the first WAB node.
18 . The method of claim 16 , wherein receiving the indication comprises: receiving, from the first mobile terminal function via a Uu interface, an identifier associated with the first network entity function; wherein the one or more actions comprise modifying scheduling behavior associated with the first WAB node.
19 . The method of claim 16 , further comprising: receiving, from the first network entity function via an Xn interface, the indication, the indication comprising an identifier associated with the first mobile terminal function; and receiving, from a second network entity that serves the first mobile terminal function, a handover preparation indication of a handover operation to handover service of the first mobile terminal function from the second network entity to the first network entity; wherein the first network entity is a second WAB node and the one or more actions comprise rejection of the handover preparation indication.
20 . A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to: receive an indication that a first entity is a first wireless access backhaul (WAB) node comprising a first mobile terminal function and a first network entity function; and perform one or more actions associated with operation of the first WAB node based at least in part on receiving the indication.

Description

FIELD OF TECHNOLOGY The following relates to wireless communications, including topology management in wireless access and backhauling networks. BACKGROUND Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE). In some wireless communications systems, a wireless device may operate in accordance with wireless access and backhaul (WAB) operations. However, such approaches may be improved. SUMMARY The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein. A method for wireless communications by a first network entity is described. The method may include receiving an indication that a first entity is a first wireless access backhaul (WAB) node including a first mobile terminal function and a first network entity function and performing one or more actions associated with operation of the first WAB node based on receiving the indication. A first network entity for wireless communications is described. The first network entity may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the first network entity to receive an indication that a first entity is a first wireless access backhaul (WAB) node including a first mobile terminal function and a first network entity function and perform one or more actions associated with operation of the first WAB node based on receiving the indication. Another first network entity for wireless communications is described. The first network entity may include means for receiving an indication that a first entity is a first wireless access backhaul (WAB) node including a first mobile terminal function and a first network entity function and means for performing one or more actions associated with operation of the first WAB node based on receiving the indication. A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to receive an indication that a first entity is a first wireless access backhaul (WAB) node including a first mobile terminal function and a first network entity function and perform one or more actions associated with operation of the first WAB node based on receiving the indication. In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, receiving the indication may include operations, features, means, or instructions for receiving, from the first network entity function via an Xn interface, an identifier associated with the first mobile terminal function and where the one or more actions include modifying scheduling behavior associated with the first WAB node. In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, the identifier associated with the first mobile terminal function includes a serving cell identifier associated with the first network entity, a radio network temporary identifier associated with the first mobile terminal function, an identifier assigned to the first mobile terminal function by the first network entity, an internet protocol address of the first mobile terminal function, a temporary mobile subscriber identity of the first mobile terminal function, or any combination thereof. In some examples of the method, first network entities, and non-transitory computer-readable medium described herein, receiving the indication may include operations, features, means, or instructions for receiving, from the first mobile terminal function via a Uu interface, an identifier associated with the first network entity function and where the one or more actions include modifying scheduling behavior associated with the first WAB node. In s