WO2012155733A1

WO2012155733A1 - Method and system of actively reporting battery capacity by sta in wireless local area network

Info

Publication number: WO2012155733A1
Application number: PCT/CN2012/074023
Authority: WO
Inventors: 张俊剑; 张德智; 张博山; 王琳
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-09-16
Filing date: 2012-04-13
Publication date: 2012-11-22
Also published as: CN103002470A; CN103002470B

Abstract

Disclosed is a method of actively reporting a battery capacity by a STA in a wireless local area network, which comprises: a STA querying a current battery capacity of a sensor, and when the current battery capacity of the sensor is lower than a configured senor battery capacity threshold, sending an alarm to a network management platform through an AP. The present invention also provides a system of actively reporting a battery capacity by a STA in a wireless local area network. According to the technical solutions of the present invention, when a deployment environment is hazardous and the number of sensors is very huge, a network management platform is capable of learning in time an alarm event caused by a low battery capacity of a sensor.

Description

Method and system for STA to actively report battery power in wireless local area network

The present invention relates to the field of wireless local area networks, and in particular, to a method and system for a STA to actively report battery power in a wireless local area network. Background technique

Wireless Local Area Networks (WLAN) is a direct extension of wired LAN. The WLAN consists of an access point (AP, Access Point) and several associated workstations (STA, Station). The development of the IEEE 802.11 family of standards has made WLANs widely applicable. After 20 years of development, the IEEE 802.il WLAN standard working group has developed a series of standard families, among which IEEE 802.11 has great influence and is widely used. a, IEEE 802.11b, IEEE 802. llg, IEEE 802.1 In and other standards.

For the application of IoT technologies such as wireless sensors, the IEEE 802.11 standard is working on the standardization of 802.11ah technology. Its working spectrum is below 1 GHz and does not coincide with the TV band (TVWS, Television White Space). The coverage distance is increased to 1,000. Around the meter, the support rate is a minimum of 100Kbps, and the STA supporting a maximum of 6000 or so is simultaneously accessed.

The official standard IEEE 802.11v has been released in 2011. As a wireless network management recommendation standard, IEEE 802.11v will provide an important and efficient mechanism to simplify network deployment and management. This standard will stipulate that the wireless infrastructure controls key parameters on the wireless terminal adapter, such as determining the network access point that needs to be connected. Most of the support for IEEE 802.11v can be implemented in software, new products, and WLAN devices already in the upgrade. Wireless devices must support 802.11 for this standard to really work. Wireless terminal device control, network selection, network optimization, and statistical data acquisition and monitoring are among the features recommended by 802.11v. IEEE 802.1 lv standard will add power saving More features, including site management features, will allow network administrators to view network performance and new location features in more detail. These new location features will be 'RF, Radio Frequency Identification' and emergency services. And so on to provide more accurate services.

The IEEE 802.11ah standard use case involves sensor deployment. Most of the power supply of the sensor is battery-powered and the deployment environment is relatively harsh. At the same time, the number of sensors is very large, which makes it difficult to manually inspect the sensor. Summary of the invention

In view of the above, the main purpose of the present invention is to provide a method and system for a STA to actively report battery power in a wireless local area network. When the deployment environment is harsh and the number of sensors is very large, the network management platform can timely know the alarm event caused by the low battery power of the sensor. .

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

The present invention provides a method for the STA to actively report the battery power in the wireless local area network, including: the STA queries the current battery power of the sensor, and when the current battery power of the sensor is less than the configured battery power threshold, the AP alerts the network management platform.

In the above method,

Before the STA queries the current battery power of the sensor, the method further includes: configuring, by the network management platform, the sensor battery power threshold for the STA through the AP.

In the above method, the network management platform configures a sensor battery power threshold for the STA through the AP as:

The network management platform sends a sensor battery power alarm threshold setting message to the AP, where the sensor battery power threshold configured for the STA is carried;

The AP sends the sensor battery power threshold to the STA through the extended Event Request mechanism. The STA sets the sensor battery power threshold, and feeds the setting result to the network management system through the AP. The current battery power of the sensor is less than the configured sensor battery power. When the threshold is reached, the alarm is sent to the NMS platform through the AP:

The STA compares the current battery power of the sensor with the sensor battery power threshold. When the current battery power of the sensor is less than the sensor battery power threshold, the alarm event is reported to the AP through the extended Event Report mechanism;

After receiving the alarm event, the AP sends the alarm information to the network management platform, which carries the sensor battery power information.

In the above method, the method further includes: after receiving the alarm information, the network management platform queries the current battery power of the sensor.

In the above method, after receiving the alarm information, the network management platform queries the current battery power of the sensor as:

After receiving the alarm information, the network management platform sends an inquiry command to the AP.

The AP sends the query request to the STA through the extended Event Request mechanism.

After receiving the query request, the STA queries the current battery power of the sensor, and feeds the query result to the AP through the extended Event Report mechanism;

The AP sends the received query result to the network management platform.

In the above method, the extended Event Request mechanism and/or the Event Report mechanism includes: a transition event, a robust security system (RSNA) event, a peer-to-peer link event, and a log record (WNM). Log ) Event and Battery Power Alarm events.

In the above method, the frame structure of the battery power alarm event includes: a field sensor current battery power (Battery Power Left), a field sensor battery power threshold (Power Threshold), and an area remaining time ( Estimated Life Left) unit. Also included: Field Additional Information ₀

The present invention also provides a system for a STA to actively report battery power in a wireless local area network, including: a STA, an AP, and a network management platform; The STA queries the current battery level of the sensor. When the current battery level of the sensor is less than the configured battery power threshold, the AP alerts the network management platform.

In the above system,

The network management platform is further configured to: configure, by the AP, a sensor battery power threshold for the STA; and/or, after receiving the alarm information, query the current battery power of the sensor.

The method and system for the STA to actively report the battery power in the WLAN provided by the present invention, the STA queries the current battery power of the sensor, and when the current battery power of the sensor is less than the configured battery power threshold, the AP reports the alarm to the network management platform through the AP. When the number of sensors is very large, the network management platform can know the alarm events caused by the low battery of the sensor, reduce the difficulty of manual inspection and save manpower. In addition, it can be used in the MAC function part of the IEEE 802.1 lah standard, IEEE 802.11ah WLAN MAC level. Detecting the battery level of the sensor and determining whether the alarm threshold is set. If the alarm threshold is reached, the battery power information of the sensor is reported to the IEEE 802.11 AP through the extended IEEE 802.11v event mechanism, and finally transmitted to the network management platform; In the case of large-scale IoT deployment, the sensor battery power is detected by the IEEE 802.11ah WLAN MAC layer and it is determined whether the sensor battery level reaches the alarm threshold. This condition can be used as the WLAN MAC for other operations. A basis for evaluation, such as enhanced energy mechanism, such as a radio frequency unit forcibly closed, thereby extending battery life and replacing the battery to provide longer reserved time. DRAWINGS

1 is a schematic flow chart of a method for actively reporting a battery power by a STA in a wireless local area network according to the present invention;

2 is a schematic flow chart of a specific implementation method of step 101 of the present invention;

3 is a schematic flow chart of a specific implementation method of step 102 of the present invention;

4 is a schematic flow chart of a specific implementation method of step 103 of the present invention;

FIG. 5 is a structural diagram of a system for actively reporting battery power by a STA in a wireless local area network according to the present invention; FIG. Schematic. detailed description

The basic idea of the present invention is: The STA queries the current battery power of the sensor, and when the current battery power of the sensor is less than the configured battery power threshold, the AP alerts the network management platform.

The invention will be further described in detail below with reference to the drawings and specific embodiments.

The present invention provides a method for a STA to actively report battery power in a wireless local area network. FIG. 1 is a schematic flowchart of a method for actively reporting a battery power by a STA in a wireless local area network. As shown in FIG. 1, the method includes the following steps:

Step 101: The network management platform configures a sensor battery power threshold for the STA through the AP.

Step 102: The STA queries the current battery power of the sensor. When the current battery power of the sensor is less than the configured battery power threshold, the AP alerts the network management platform.

Step 103: After receiving the alarm information, the network management platform queries the current battery power of the sensor. 2 is a schematic flowchart of a specific implementation method of step 101 of the present invention. As shown in FIG. 2, the method includes the following steps:

Step 201: The network management platform sends a sensor battery power alarm threshold setting message to the AP, where the sensor battery power threshold configured for the STA is carried;

Specifically, the network management platform uses a simple network management protocol (SNMP, Simple Network

The management protocol or the TR069 network management protocol sends a sensor battery power alarm threshold setting message to the IEEE 802.1 lah AP, which carries the sensor battery power threshold configured by the network management platform for the STA.

Step 202: The AP sends a sensor battery power threshold to the STA through an extended Event Request mechanism.

Specifically, the IEEE 802.11ahAP parses the sensor battery power alarm threshold setting message, and sends the parsed sensor battery power threshold to the STA through the extended IEEE 802.11v event request mechanism. Among them, the events included in the Event Provider mechanism and the Event Report mechanism in IEEE 802.11 ν are transition events, robust security system (RSNA) events, peer-to-peer link events, and log records (WNM). Log events, these events do not cover alarm events with very high priority levels such as sensor battery power reporting. Therefore, the present invention expands the Event Request mechanism and the Event Report mechanism in IEEE 802.11v, and selects one of the existing Reserved numbers. The number is used to indicate the Battery Power Alarm event, and the extended Event Request mechanism and Event Report mechanism are defined by the battery power alarm event of this new port, as shown in Table 1:

Structure, as shown in Table 2:

Table 2

In Table 2, the field sensor's current battery power (Battery Power Left) is in mAH (milliampere per hour). The current battery power value of the sensor is obtained by the IEEE 802.11ah MAC module calling the relevant interface of the sensor battery power. Field length definition It is 2 bytes, the range is 0 ~ 65535; the field sensor battery power threshold (Power Threshold) is mAH (milliampere per hour), and the sensor battery power threshold (Power Threshold) is configured by the network management platform for STA. The length of the field is defined as 2 bytes, the range is 0 - 65535; the remaining time of the field (Estimated Life Left) is Minutes (minutes), and the remaining time is the estimated time of the estimated battery power of the sensor, which is provided to the network management platform. For reference, the field length is 2 bytes, and the range is 0 to 65535. Optionally, additional information may be included, and the additional information includes location information such as location based information. Variable length;

Here, the IEEE 802.11 ah AP sends the sensor battery power threshold to the STA through the frame structure of the defined Battery Power Alarm event, and the value of other fields in the frame structure is null.

Step 203: The STA sets a sensor battery power threshold, and returns a setting result to the AP by using an Event Report mechanism.

Specifically, the STA parses the frame structure of the received Battery Power Alarm event to obtain a sensor battery power threshold; the STA sets and saves the sensor battery power threshold, and passes the setting result through the existing IEEE 802.1 lv. The Event Report mechanism is sent to the IEEE 802.11ahAP; where the setting results include setup success and setup failure.

Step 204: The AP returns the setting result to the network management platform.

Specifically, the IEEE 802.11ah AP encapsulates the setting result received by the STA into the SNMP or TR069 network management protocol package, and sends the result to the network management platform.

FIG. 3 is a schematic flowchart of a specific implementation method of step 102 of the present invention. As shown in FIG. 3, the method includes the following steps:

Step 301: The STA queries the current battery power of the sensor.

Specifically, the time policy is configured on the STA in advance, and the STA queries the current battery power of the sensor through the query interface according to the customized time policy.

Step 302: The STA compares the current battery power of the sensor with the sensor battery power threshold, and when the current battery power of the sensor is less than the sensor battery power threshold, the extended event is The Report mechanism reports an alarm event to the AP;

Specifically, the STA compares the current battery power of the sensor with the sensor battery power threshold. If the current battery power of the current sensor is less than the configured sensor battery power threshold, the STA needs to be alerted to the AP, and the STA passes the extended IEEE 802.1 lv Event Report mechanism. The alarm event is reported to the IEEE 802.11ahAP. The IEEE 802.11ah AP sends the sensor battery power information to the STA through the frame structure of the defined Battery Power Alarm event. The sensor battery power threshold field in the frame structure is Empty; Sensor battery power information includes: sensor current battery power, remaining time, location information, etc.

Step 303: After receiving the alarm event, the AP sends the alarm information to the network management platform. Specifically, after receiving the alarm event, the IEEE 802.11 ah AP parses the sensor from the frame structure of the defined battery power alarm event. The battery power information is sent to the network management platform through the event reporting mechanism of SNMP or TR069.

4 is a schematic flowchart of a specific implementation method of step 103 of the present invention. As shown in FIG. 4, the method includes the following steps:

Step 401: After receiving the alarm information, the network management platform sends an inquiry command to the AP.

Specifically, the network management platform receives the alarm information. In order to further confirm the alarm event, the device needs to actively query the current battery power of the sensor. Therefore, the network management platform sends an inquiry command to the IEEE 802.11ahAP through the SNMP or TR069 protocol.

Step 402: The AP sends the query request to the STA through the extended Event Request mechanism. Specifically, the IEEE 802.11ahAP sends the query request received from the network management platform to the STA through the extended IEEE 802.11v Event Request mechanism. The events and specific frame structures shown in Tables 1 and 2 are carried.

Step 403, after receiving the query request, the STA queries the current battery power of the sensor, and feeds the query result to the AP through the extended Event Report mechanism; Specifically, after receiving the query request, the STA queries the current battery power and remaining time and location information of the sensor, and sends the information to the IEEE 802.11ahAP through the extended IEEE 802.11V Event Report mechanism.

Step 404: The AP sends the received query result to the network management platform.

Specifically, the IEEE 802.11ahAP parses the query result from the frame structure and sends it to the network management platform for further processing through the SNMP or TR069 protocol.

In order to achieve the above method, the present invention further provides a system for a STA to actively report battery power in a wireless local area network, and FIG. 5 is a schematic structural diagram of a system for actively reporting a battery power by a STA in a wireless local area network, as shown in FIG. The system includes: STA 51, AP 52, and network management platform 53;

The STA 51 queries the current battery level of the sensor, and alerts the network management platform 53 through the AP 52 when the current battery power of the sensor is less than the configured battery power threshold.

The network management platform 53 is further configured to configure a sensor battery power threshold for the STA 51 through the AP 52; and/or, after receiving the alarm information, query the current battery power of the sensor.

The network management platform 53 configures the sensor battery power threshold for the STA 51 through the AP 52. The network management platform sends a sensor battery power alarm threshold setting message to the AP, where the sensor battery power threshold configured for the STA is carried; the AP passes the extended Event Request mechanism. The sensor battery power threshold is sent to the STA; the STA sets the sensor battery power threshold, and feeds the setting result to the network management platform through the AP.

The STA when the current battery power of the sensor is less than the configured sensor battery power threshold

The alarm is sent to the network management platform 53 through the AP 52 as follows: The STA compares the current battery power of the sensor with the sensor battery power threshold. When the current battery power of the sensor is less than the sensor battery power threshold, the alarm event is reported to the AP through the extended Event Report mechanism. After receiving the alarm event, the AP sends the alarm information to the network management platform, which carries the sensor battery power information.

After receiving the alarm information, the network management platform 53 queries the current battery power of the sensor as: After receiving the alarm information, the platform sends an inquiry command to the AP. The AP sends the query request to the STA through the extended Event Request mechanism. After receiving the query request, the STA queries the current battery power of the sensor and passes the query result through the extended Event Report mechanism. The AP sends the query result to the network management platform.

The extended Event Request mechanism and/or Event Report mechanism includes: roaming

Transition events, robust security regime (RSNA) events, Peer-to-Peer Link events, WNM Log events, and Battery Power Alarm events.

The frame structure of the Battery Power Alarm event includes: field sensor current battery power (Battery Power Left), field sensor battery power threshold (Power Threshold), field remaining time ( Estimated Life Left) unit; optional , you can also include Additional Information.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included. Within the scope of protection of the present invention.

Claims

Claim

A method for a STA to actively report a battery power in a wireless local area network, wherein the method comprises:

The workstation (STA) queries the current battery level of the sensor. When the current battery level of the sensor is less than the configured battery power threshold, the access point (AP) alerts the network management platform.

2. The method of claim 1 wherein

The method according to claim 2, wherein the network management platform configures a sensor battery power threshold for the STA through the AP:

The AP sends the sensor battery power threshold to the STA through an extended Event Request mechanism;

STA sets the sensor battery power threshold, and feeds the result to the network management through the AP.

The method according to claim 1, wherein when the current battery power of the sensor is less than the configured battery power threshold, the alarm is sent to the network management platform by the AP:

The method according to claim 1, wherein the method further comprises: after receiving the alarm information, the network management platform queries the current battery power of the sensor.

The method according to claim 5, wherein after the receiving the alarm information, the network management platform queries the current battery power of the sensor as:

The AP sends the received query result to the network management platform.

7. The method of claim 3, 4 or 6, wherein the extended Event Request mechanism and/or Event Report mechanism comprises: a transition event, a robust security regime (RSNA) event, a peer-to-peer Peer-to-Peer Link events, WNM Log events, and Battery Power Alarm events.

8. The method according to claim 7, wherein the frame structure of the Battery Power Alarm event comprises: a field sensor current battery power (Battery Power Left), a field sensor battery power threshold (Power Threshold) ), the field remaining time ( Estimated Life Left );

Also included: Field Additional Information ₀

A system for a STA to actively report a battery power in a wireless local area network, wherein the system includes: a STA, an AP, and a network management platform;

The STA queries the current battery level of the sensor. When the current battery level of the sensor is less than the configured battery level of the sensor, the AP alerts the network management platform.

10. The system of claim 9 wherein: