WO2022001313A1

WO2022001313A1 - Smart device and wcn module exception recovery system thereof and method therefor

Info

Publication number: WO2022001313A1
Application number: PCT/CN2021/088908
Authority: WO
Inventors: 孟超
Original assignee: 展讯通信（上海）有限公司
Priority date: 2020-06-30
Filing date: 2021-04-22
Publication date: 2022-01-06
Also published as: CN111800810B; CN111800810A

Abstract

Disclosed in the present invention are a smart device and a WCN module exception recovery system thereof and method therefor. The system comprises an AP-side module and a WCN module; the AP-side module comprises a system service, a WCN service, and a driving module; the WCN module comprises WCN firmware; the WCN service comprises at least one sub-service service; the driving module is used for recognizing, by querying a device node in the driving module according to a preset mechanism, a sub-service in which an exception event occurs; the driving module is further used for notifying the exceptional sub-service service by means of an active reporting mechanism after the sub-service in which the exception event occurs is recognized; the exceptional sub-service service is a sub-service service corresponding to the sub-service in which the exception event occurs; the exceptional sub-service service is used for performing exception recovery by using a restart mechanism in the exceptional sub-service service on the basis of the exception event. According to the present invention, a WCN exception can be found in time, and exception recovery can maintain the stability and reliability of the system, thereby achieving the effect that a user does not perceive the occurrence of an exception.

Description

System and method for abnormal recovery of smart device and its WCN module

This application claims the priority of Chinese patent application 2020106208066 with an application date of 2020/6/30. This application cites the full text of the above Chinese patent application.

technical field

The invention belongs to the technical field of wireless communication, and particularly relates to a system and method for abnormal recovery of a smart device and its WCN module.

Background technique

Smart devices with wireless communication modules such as smart phones or embedded products, the main body is designed as AP (application processor) module + WCN (wireless communication network) module, the AP side runs an operating system such as Android (Android) or Linux, and the WCN module Implement at least one wireless communication function, such as Wi-Fi (wireless Internet access), Bluetooth, FM (frequency modulation), GPS (Global Positioning System, global positioning system), etc. The WCN module in the existing smart phone usually integrates Wi-Fi, Bluetooth, FM, and GPS four-in-one wireless communication functions. If the WCN module crashes (crash abnormality), the system needs to restart the WCN module to recover. for normal use. If the recovery is not performed, the functions of the WCN module will be unavailable, which will seriously affect the user experience.

FIG. 1 is an architecture diagram of a system for abnormal recovery of the existing WCN module. Among them, the WCN module is represented as Firmware (firmware) in Figure 1, which is located in the Vendor (manufacturer) partition; and the specific function implementation module of the WCN module is located in the System (system) partition, which is WCND (WCN Debug, WCN debugging) in Figure 1. The module, that is, the System partition, first needs to learn about the crash event that occurs in the WCN module, and then perform abnormal recovery. When the system service or APP (application program) that uses the WCN module function enables the WCN module business, the WCN Service (WCN service) process will start to start, and the APP module or other system services communicate with the WCN Service through the API (application program interface) method. Realize specific wireless communication functions; WCN Service communicates with the Driver (driver) of the system Kernel (kernel) layer through Netlink (a communication mechanism) to realize the command processing of specific functions; In the way of periodic query, monitor the running status of the WCN module to know whether the WCN module has crashed; the WCND module has the system authority. After querying the WCN module to crash, it will find the WCN Service process and close it, that is, WCND will close the corresponding process through horizontal communication. When the WCN Service ends, the system service knows through the callback interface, starts the WCN Service again, and completes the abnormal recovery of the WCN module.

The existing WCN module exception recovery mechanism has the following problems:

First, the existing system architecture is relatively complex, and it is necessary to access the device nodes in the Driver through the WCND module for periodic query, which has low access efficiency and poor security, and the possibility of untimely and inaccurate discovery of the WCN module crash.

Second, the direct termination of the WCN Service process by WCND is an abnormal end, and the abnormal exit reduces the stability and reliability of the system. There is a certain probability that the system service cannot timely and accurately determine that the WCN module needs to be restarted.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the defects of the abnormal recovery mechanism of the WCN module in the prior art that the abnormality is not detected in time and the stability and reliability of the system are easily reduced after recovery, so as to provide a method that can detect the abnormality of the WCN in time and can recover from the abnormality. Maintain the stability and reliability of the system, so as to realize the abnormal recovery system of the intelligent device and its WCN module that the user does not perceive the effect of abnormal occurrence.

The present invention solves the above-mentioned technical problems through the following technical solutions:

A first aspect of the present invention provides a system for abnormal recovery of a WCN module of an intelligent device, including an AP side module and a WCN module, the AP side module includes a system service, a WCN service and a driver module, and the WCN module includes WCN firmware, The WCN service includes at least one sub-business service;

The drive module is used to identify the sub-services in which an abnormal event occurs by querying the device nodes inside the drive module according to a preset mechanism;

The driving module is further configured to notify the abnormal sub-business service through an active reporting mechanism after identifying the sub-service in which the abnormal event occurs; the abnormal sub-business service is the sub-business service corresponding to the sub-business in which the abnormal event occurs;

The abnormal sub-business service is used for abnormal recovery based on the abnormal event using a restart mechanism inside the abnormal sub-business service.

In this solution, the participation of the WCND module in the existing implementation is removed, and the Kernel actively reports the Crash event of the WCN module through the active reporting mechanism, and the WCN Service is restarted by the respective business modules in each sub-business System partition module. It avoids the reduction of system stability and reliability caused by the abnormal termination of the WCN Service process by the WCND module.

In this solution, the detection of the crash event of the WCN module is delegated to the driver module, and the Kernel actively reports the crash event of the WCN module through the active reporting mechanism. Because the query and reporting are performed inside the driver module, the access efficiency and security are improved. , and can discover the Crash of the WCN module in time, avoiding the problems of low access efficiency and poor security in the way of periodically querying the device nodes in the Driver through the WCND module cross-module access, and the problem of untimely and inaccurate discovery of the WCN module Crash. .

Preferably, the active reporting mechanism includes a UEVENT mechanism or a Netlink mechanism.

Preferably, the preset mechanism is a regular preset time interval.

In this solution, the WCN module monitors its own running status, and transmits it to the device node corresponding to the sub-service module in the driver module when an abnormality is found. The driver module periodically queries the device node corresponding to each sub-service module at preset time intervals. , and identify the sub-service in which the abnormal event occurs according to the status of the device node.

Preferably, the sub-service services include Wi-Fi services, Bluetooth services, FM services and GPS services.

In this solution, when the underlying WCN module is a wireless communication network chip with integrated four-in-one function, the service corresponding to the AP side supports four sub-services, namely Wi-Fi service, Bluetooth service, FM service and GPS service.

Preferably, the smart device includes a smart phone or a smart speaker.

In this solution, the smart device can be a smart phone and other embedded devices, such as smart speakers. For smart speakers, its WCN module may only support Wi-Fi and Bluetooth services.

A second aspect of the present invention provides a method for abnormal recovery of a WCN module of a smart device, and the method is implemented based on the system for abnormal recovery of a WCN module of a smart device described in the first aspect;

The method includes the following steps:

The drive module identifies the sub-service in which the abnormal event occurs by querying the device nodes inside the drive module according to a preset mechanism;

The driver module notifies the abnormal sub-business service through an active reporting mechanism after identifying the sub-business in which the abnormal event occurs;

The abnormal sub-business service uses a restart mechanism inside the abnormal sub-business service to perform abnormal recovery based on the abnormal event.

Preferably, the step of the drive module identifying the sub-service where the abnormal event occurs by querying the device nodes inside the drive module according to a preset mechanism is:

The driving module identifies the sub-service in which the abnormal event occurs by regularly querying the device nodes inside the driving module at preset time intervals.

A third aspect of the present invention provides a smart device, including the system for abnormal recovery of the WCN module of the smart device described in the first aspect.

The positive progressive effect of the present invention is:

Compared with the prior art, in the system and method for abnormal recovery of a smart device and its WCN module provided by the present invention, the WCN Service is restarted by each service module in each sub-service System partition module, avoiding the abnormal termination of the WCN directly through the WCND module. Reduced system stability and reliability caused by the Service process. The query and reporting of the crash event of the WCN module are carried out inside the driver module, so the access efficiency and security are improved, and the crash of the WCN module can be found in time.

Description of drawings

FIG. 1 is an architecture diagram of a system for abnormal recovery of a WCN module of an existing smart device.

FIG. 2 is a structural diagram of a system for abnormal recovery of a WCN module of a smart device according to Embodiment 1 of the present invention.

FIG. 3 is a flowchart of a method for abnormal recovery of a WCN module of a smart device according to Embodiment 2 of the present invention.

detailed description

The present invention is further described below by way of examples, but the present invention is not limited to the scope of the described examples.

Example 1

As shown in FIG. 2 , this embodiment provides a system for abnormal recovery of a WCN module of a smart device, including an AP side module and a WCN module, the AP side module includes a system service, a WCN service, and a driver module, and the WCN module includes WCN firmware, The WCN service includes at least one sub-business service. In this embodiment, the smart device is a smart phone of the Android system, and may also be other embedded devices such as a smart speaker in other optional implementation manners. Figure 2 is an improvement based on the general Android system architecture. Among them, the system service is represented by the APP in FIG. 2 , and may also include other system services. The driver module is the Driver in Figure 2, and the WCN firmware is the Firmware in Figure 2. WCN Service is in the System layer of the Android system architecture, and Driver is in the Kernel layer.

In this embodiment, the WCN service includes four sub-services, namely Wi-Fi service, Bluetooth service, FM service and GPS service.

In this embodiment, the WCN module monitors its own running state by itself, and when an abnormality is found, it is transmitted to the device node corresponding to the sub-service module in the Driver, and the Driver regularly queries the device node corresponding to each sub-service module at preset time intervals, Identify the sub-services that have abnormal events according to the status of the device node. The Driver is also used to notify the abnormal sub-business service through the active reporting mechanism after identifying the sub-business where the abnormal event occurs; the abnormal sub-business service is the sub-business service corresponding to the sub-business where the abnormal event occurs; the abnormal sub-business service is used based on the abnormal event Abnormal recovery is performed using the restart mechanism within the abnormal sub-business service.

The active reporting mechanism includes the UEVENT mechanism or the Netlink mechanism. In this embodiment, the UEVENT mechanism is adopted, which is simple in implementation and more suitable for the system architecture of this embodiment.

For example, in this embodiment, if the sub-service in which the abnormal event occurs is the Wi-Fi service, the Driver will actively report the Wi-Fi service of the System layer through the UEVENT mechanism after recognizing that the Wi-Fi service is abnormal. - The Fi service adopts the restart mechanism inside the Wi-Fi service to recover the abnormality based on the specific situation of the abnormal event. The restart mechanism inside the Wi-Fi service will properly save various data related to the Wi-Fi service, so it will not cause a reduction in the reliability and security of the Wi-Fi service system such as abnormal shutdown.

In this embodiment, the participation of the WCND module in the existing implementation is removed, and the Kernel actively reports the crash event of the WCN module through the active reporting mechanism, and the WCN Service is restarted by the respective service modules in each sub-service System partition module to avoid The system stability and reliability are reduced due to the abnormal termination of the WCN Service process by the WCND module.

In this embodiment, the detection of the crash event of the WCN module is delegated to the driver module, and the Kernel actively reports the crash event of the WCN module through the active reporting mechanism, because the query and reporting are performed inside the driver module, thus improving access efficiency and security It can also detect the crash of the WCN module in time, avoiding the problems of low access efficiency and poor security in the way of periodically querying the device nodes in the Driver through the WCND module cross-module access, as well as the untimely and inaccurate discovery of the WCN module crash. problem.

Example 2

As shown in FIG. 3 , this embodiment provides a method for abnormal recovery of a WCN module of a smart device, and the method is implemented based on the system for abnormal recovery of a WCN module of a smart device in Embodiment 1.

The method includes the following steps:

S _1, sub-service drive module abnormal event occurs at regular intervals by preset query node identification device driver inside the module.

S _2, the driving module after the sub-service to identify abnormal events abnormality notification service through an active sub-service reporting mechanism; active mechanism may UEVENT reporting mechanism may be a mechanism Netlink.

S ₃ abnormal abnormal recovery business services sub-restart mechanism uses an internal sub-business service exception exception-based events.

Example 3

This embodiment provides a smart device, where the smart device includes the system for abnormal recovery of the WCN module of the smart device of Embodiment 1.

Although the specific embodiments of the present invention are described above, those skilled in the art should understand that this is only an illustration, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

A system for abnormal recovery of a WCN module of an intelligent device, comprising an AP side module and a WCN module, the AP side module comprising a system service, a WCN service and a driver module, the WCN module comprising WCN firmware, the WCN The service includes at least one sub-business service;

The drive module is used to identify the sub-services in which an abnormal event occurs by querying the device nodes inside the drive module according to a preset mechanism;

The driving module is further configured to notify the abnormal sub-business service through an active reporting mechanism after identifying the sub-service in which the abnormal event occurs; the abnormal sub-business service is the sub-business service corresponding to the sub-business in which the abnormal event occurs;

The abnormal sub-business service is used for abnormal recovery based on the abnormal event using a restart mechanism inside the abnormal sub-business service.
The system for abnormal recovery of a WCN module of a smart device according to claim 1, wherein the active reporting mechanism comprises a UEVENT mechanism or a Netlink mechanism.
The system for abnormal recovery of a WCN module of a smart device according to claim 1, wherein the preset mechanism is a preset time interval at regular intervals.
The system for abnormal recovery of a WCN module of a smart device according to claim 1, wherein the sub-service services include Wi-Fi services, Bluetooth services, FM services and GPS services.
The system for abnormal recovery of a WCN module of a smart device according to claim 1, wherein the smart device comprises a smart phone or a smart speaker.
A method for abnormal recovery of a WCN module of a smart device, wherein the method is implemented based on the system for abnormal recovery of a WCN module of a smart device according to any one of claims 1 to 5;

The method includes the following steps:

The drive module identifies the sub-service in which the abnormal event occurs by querying the device nodes inside the drive module according to a preset mechanism;

The driver module notifies the abnormal sub-business service through an active reporting mechanism after identifying the sub-business in which the abnormal event occurs;

The abnormal sub-business service uses a restart mechanism inside the abnormal sub-business service to perform abnormal recovery based on the abnormal event.
The method for abnormal recovery of a WCN module of a smart device according to claim 6, wherein the active reporting mechanism comprises a UEVENT mechanism or a Netlink mechanism.
The method for abnormal recovery of the WCN module of an intelligent device as claimed in claim 6, wherein the step of the drive module identifying the sub-service where the abnormal event occurs by querying the device node inside the drive module according to a preset mechanism is:

The driving module identifies the sub-service in which the abnormal event occurs by regularly querying the device nodes inside the driving module at preset time intervals.
The method for abnormal recovery of a WCN module of a smart device according to claim 6, wherein the sub-service services include Wi-Fi services, Bluetooth services, FM services and GPS services.
A smart device, characterized in that it includes the system for abnormal recovery of the WCN module of the smart device according to any one of claims 1 to 5.