Network management actions based on access point classification

Patent metadata

Field	Value
Publication number	US-11770290-B2
Application number	US-202117402215-A
Country	US
Kind code	B2
Filing date	Aug 13, 2021
Priority date	Aug 13, 2021
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

An example system includes access point (AP) devices configured to provide a wireless network at a site; and a network management system that stores network data received from the AP devices, the network data collected by the AP devices or client devices associated with the wireless network, and one or more processors configured to: receive a time series of SLE metrics based on the network data, determine, based on the time series, whether a network event has occurred, in response to a determination that a network event has occurred, determine a root cause for the network event, and in response to a determination that the root cause of the network event is associated with an AP device, determine a classification of the AP device, and determine a network management action for the AP device based on the network event and the classification of the AP device.

First claim

What is claimed is:

1. A system comprising:
a plurality of access point (AP) devices configured to provide a wireless network at a site; and
a network management system comprising:
a memory storing network data received from the plurality of AP devices, the network data collected by the plurality of AP devices or a plurality of client devices associated with the wireless network, and
one or more processors coupled to the memory and configured to:
determine that a network event has occurred, wherein the network event comprises a degradation in network performance;
determine a root cause for the network event, and
in response to a determination that the root cause of the network event is associated with an AP device of the plurality of AP devices,
determine a classification of the AP device, and
determine, based on the network event and if the classification of the AP device comprises an edge AP, a network management action for the AP device to bypass a mitigation action with respect to the AP device.

2. The system of claim 1 , wherein the one or more processors are further configured to:
determine, based on the network event and if the classification of the AP device comprises a centric AP, a network management action for the AP device to execute a mitigation action with respect to the AP device.

3. The system of claim 1 , wherein to determine the classification of the AP device comprises the one or more processors configured to:
determine whether the AP device is on a periphery of a graph of the plurality of AP devices; and
in response to a determination that the AP device is on the periphery of the graph of the plurality of AP devices, determine that the classification of the AP device comprises an edge AP.

4. The system of claim 3 , wherein to determine whether the AP device is on the periphery of the plurality of AP devices comprises the one or more processors configured to:
create an AP neighborhood graph having a plurality of nodes, wherein each node represents a corresponding AP device of the plurality of AP devices and each edge between a first AP and a second AP indicates that the first AP can receive a signal from the second AP at a power above a predetermined threshold;
determine a betweenness centrality value for each node of the plurality of nodes; and
determine that the AP device is on the periphery of the AP neighborhood graph based on the betweenness centrality value for the node corresponding to the AP device.

5. The system of claim 1 , wherein to determine the classification of the AP device comprises the one or more processors configured to:
for each AP device of the plurality of AP devices, maintain a join count of a number of times that the respective AP device is used by a user equipment (UE) to join the wireless network; and
determine that the classification of the AP device comprises an edge AP based on the join count.

6. The system of claim 1 , wherein to determine the classification of the AP device comprises the one or more processors configured to:
for each AP device of the plurality of AP devices, maintain a leave count of a number of times that a user equipment (UE) associated with the AP device disassociates with the AP and leaves the wireless network; and
determine that the classification of the AP device comprises the edge AP based on the leave count.

7. The system of claim 1 , wherein to determine the classification of the AP device comprises the one or more processors configured to:
for each AP device, determine a bandwidth utilization of the AP; and
determine that the classification of the AP device comprises the edge AP based on the bandwidth utilization be below a configurable or predetermined threshold.

8. The system of claim 1 , wherein to determine the network event comprises the one or more processors configured to determine the root cause of the network event based on the output of a machine learning model.

9. The system of claim 1 , wherein the one or more processors are further configured to:
receive a time series of Service Level Expectation (SLE) metrics, the SLE metrics based on the network data, and wherein to determine whether the network event has occurred is based on the time series of the SLE metrics.

10. A network management system (NMS) that manages a plurality of access point (AP) devices in a wireless network, the NMS comprising:
a memory storing network data received from the plurality of AP devices, the network data collected by the plurality of AP devices or a plurality of client devices associated with the wireless network; and
one or more processors coupled to the memory and configured to:
determine that a network event has occurred, wherein the network event comprises a degradation in network performance;
determine a root cause for the network event, and
in response to a determination that the root cause of the network event is associated with an AP device of the plurality of AP devices,
determine a classification of the AP device, and
determine based on the network event and if the classification of the AP device comprises an edge AP, a network management action for the AP device to bypass a mitigation action with respect to the AP device.

11. The NMS of claim 10 , wherein to determine the classification of the AP device comprises the one or more processors configured to:
determine whether the AP device is on a periphery of a graph of the plurality of AP devices; and
in response to a determination that the AP device is on the periphery of the graph of the plurality of AP devices, determine that the classification of the AP device comprises an edge AP.

12. The NMS of claim 11 , wherein to determine whether the AP device is on the periphery of the plurality of AP devices comprises the one or more processors configured to:
create an AP neighborhood graph having a plurality of nodes, wherein each node represents a corresponding AP device of the plurality of AP devices and each edge between a node representing first AP and a node representing a second AP indicates that the first AP can receive a signal from the second AP at a power above a predetermined threshold;
determine a betweenness centrality value for each node of the plurality of nodes; and
determine that the AP device is on the periphery of the AP neighborhood graph based on the betweenness centrality value for the node corresponding to the AP device.

13. The NMS of claim 10 , wherein to determine the classification of the AP device comprises the one or more processors configured to:
for each AP device of the plurality of AP devices, maintain a join count of a number of times that the respective AP device is used by a UE to join the wireless network; and
determine that the classification of the AP device comprises an edge AP based on the join count.

14. The NMS of claim 10 , wherein to determine the classification of the AP device comprises the one or more processors configured to:
for each AP device of the plurality of AP devices, maintain a leave count of a number of times that a UE associated with the AP device disassociates with the AP and leaves the wireless network; and
determine that the classification of the AP device comprises the edge AP based on the leave count.

15. The NMS of claim 10 , wherein to determine the classification of the AP device comprises the one or more processors configured to:
for each AP device, determine a bandwidth utilization of the AP; and
determine that the classification of the AP device comprises the edge AP based on the bandwidth utilization be below a configurable or predetermined threshold.

Assignees

• Juniper Networks Inc

Inventors

• Wang Wenfeng
• Wang Jisheng

Classifications

• H04L41/0631 Primary

  using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis · CPC title

• H04W88/08

  Access point devices · CPC title

• H04L41/00 Primary

  Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W24/04

  Arrangements for maintaining operational condition · CPC title