CN109756956B - Communication method and communication device, access point equipment and station equipment - Google Patents

Communication method and communication device, access point equipment and station equipment Download PDF

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CN109756956B
CN109756956B CN201711071057.0A CN201711071057A CN109756956B CN 109756956 B CN109756956 B CN 109756956B CN 201711071057 A CN201711071057 A CN 201711071057A CN 109756956 B CN109756956 B CN 109756956B
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service set
basic service
set parameter
value
wake
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CN109756956A (en
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董贤东
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Meizu Technology Co Ltd
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Meizu Technology Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The invention provides a communication method and a communication device of a wireless local area network, access point equipment and station equipment, wherein the communication method of the wireless local area network for the access point equipment comprises the following steps: generating a wake-up message frame, wherein the wake-up message frame comprises a counting identification bit and a basic service set parameter change identification bit; and sending a wake-up message frame to the station equipment, wherein the value of the counting identification bit is increased by 1 when the basic service set parameter of the access point equipment is changed, the value of the counting identification bit is used for the station equipment to determine whether the basic service set parameter is changed, and the value of the basic service set parameter change identification bit is used for the station equipment to determine whether to immediately wake up the main communication interface of the station equipment. According to the technical scheme, whether the station equipment needs to immediately wake up the main communication interface of the station equipment to obtain the changed basic service set parameters can be determined according to different change types of the basic service set parameters, so that the equipment is more power-saving, and the requirements of IEEE802.11ba are met.

Description

Communication method and communication device, access point equipment and station equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communication method of a wireless local area network, a communication apparatus of a wireless local area network, an access point device, and a station device.
Background
In the year 2016, 7, IEEE (Institute of Electrical and Electronics Engineers) 802.11 established the research group WUR (wake Up receiver) of the next generation Wi-Fi (Wireless Fidelity) technology, which is IEEE802.11ba, and is mainly applied to the internet of things, in order to save the power consumption of the device as much as possible, and most importantly, in order to make the device receiving the wake-Up frame (wake Up message frame, i.e., WUR message frame) save the power consumption of the device as much as possible, wherein the power consumption required by the device to receive the wake-Up frame is not more than 1 mW.
When the device is in the WUR mode, the primary communication interface of the device is in a sleep state, and the secondary communication interface of the device is in a continuous awake state or a periodic awake state, where the secondary communication interface is used to receive a WUR message frame sent by an AP (Access Point), so as to wake up the primary communication interface to obtain a downlink data frame cached by the AP for the device.
When the primary communication interface of the station device goes to sleep, BSS (Basic Service Set) parameters of the AP with which the station device is associated may change, for example, EDCA (Enhanced Distributed Channel Access) parameters of the AP change. In the standard formulation process, when the BSS parameter changes, the access point device may notify the station device by: the access point device indicates the BSS parameter update by adding a count flag bit to the wake-up message frame, and when the BSS parameter changes, the timer is incremented by 1. However, it is not explicitly specified whether the station device wakes up its main communication interface to obtain the changed BSS parameters immediately after receiving the notification that the BSS parameters are changed, so that it needs to be explicitly defined.
Disclosure of Invention
Based on at least one of the above technical problems, the present invention provides a new communication scheme for a wireless local area network, which can determine whether a station device needs to immediately wake up its main communication interface to obtain a changed basic service set parameter according to different change types of the basic service set parameter when the basic service set parameter of an access point device changes, thereby saving power of the device and meeting the requirements of ieee802.11ba.
In view of this, according to a first aspect of the present invention, a communication method of a wireless local area network is provided, where the communication method of the wireless local area network is used for an access point device, and includes: generating a wake-up message frame, wherein the wake-up message frame comprises a counting identification bit and a basic service set parameter change identification bit; and sending a wake-up message frame to the station equipment, wherein the value of the counting identification bit is increased by 1 when the basic service set parameter of the access point equipment is changed, the value of the counting identification bit is used for the station equipment to determine whether the basic service set parameter is changed, and the value of the basic service set parameter change identification bit is used for the station equipment to determine whether to immediately wake up the main communication interface of the station equipment.
In the technical scheme, after a main communication interface of a station device enters a sleep state, a basic service set parameter of an access point device associated with the station device may change, in order to timely notify a change situation of the basic service set parameter of the station device, a count flag bit and a basic service set parameter change flag bit may be set in a wake-up message frame sent to the station device, where a value of the count flag bit may be automatically increased by 1 when the basic service set parameter of the access point device changes, and then the station device may determine whether the basic service set parameter of the access point device changes according to a value of the count flag bit in the received wake-up message frame, and when it is determined that the change occurs, the station device may determine whether to immediately wake up the main communication interface of the station device to obtain the changed basic service set parameter sent by the access point device according to the value of the basic service set parameter change flag bit, therefore, whether the station equipment needs to immediately wake up the main communication interface of the station equipment to acquire the changed basic service set parameters of the access point equipment can be determined according to different change types of the basic service set parameters, so that the equipment is more power-saving, and the requirements of IEEE802.11ba are met.
In the above technical solution, preferably, when the value of the basic service set parameter change flag bit is a first value, the station device is configured to instruct the station device to immediately wake up the main communication interface to receive the changed basic service set parameter; and when the value of the basic service set parameter change identification bit is a second value, the secondary communication interface is used for instructing the station equipment to listen to a beacon frame broadcast by the access point equipment so as to receive the changed basic service set parameters.
In the technical scheme, when determining whether the station device needs to immediately wake up the main communication interface according to different change types of the basic service set parameters, specifically, when the value of the basic service set parameter change identification bit is a first value, it indicates that the access point device has a change in parameters related to a communication channel, such as a communication channel of the access point device or a quiet period of the access point device, or indicates that the BSS basic parameters of the access point device have a change, such as a change in a basic parameter carried by the access point device when broadcasting a beacon frame or a change in a broadcast period of a WUR beacon frame, and at this time, the main communication interface of the station device needs to be immediately woken up to obtain the changed basic service set parameters to reestablish association with the access point device; when the value of the basic service set parameter change identification bit is the second value, it indicates that the parameters related to the communication performance of the access point device are changed, such as EDCA parameters and the like, or indicates that the basic BSS parameters of the access point device are not changed, and at this time, the station device does not need to immediately wake up the main communication interface of the station device, and can acquire the changed basic service set parameters only by instructing the station device to listen to the beacon frame broadcast by the access point device through the secondary communication interface, so that the device can save power consumption.
Further specifically, the access point device may obtain the changed basic service set parameters by receiving a request frame sent by the main communication interface of the station device, which is awakened immediately, so as to re-establish association with the access point device, where the request frame may be a probe request frame; further preferably, the first value may be taken as "0" and the second value may be taken as "1".
In any of the above technical solutions, preferably, the step of generating the wake-up message frame specifically includes: and setting the counting identification bit and the basic service set parameter change identification bit as an information element of the wake-up message frame.
In the technical scheme, on one hand, the counting identification bit and the basic service set parameter change identification bit can be combined into a new information element to be placed in the wake-up message frame, so that the station equipment can directly and efficiently analyze the counting identification bit and the basic service set parameter change identification bit at one time.
In any of the above technical solutions, preferably, the step of generating the wake-up message frame specifically includes: and positioning the counting identification bit and the basic service set parameter change identification in the MAC frame header part of the wake-up message frame.
In this technical solution, on the other hand, the counting flag and the basic service set parameter change flag may also be located in a MAC (Media Access Control) frame header of the wake-up message frame, so that the station device may obtain the counting flag and the basic service set parameter change flag together when analyzing information in the MAC frame header of the wake-up message frame.
According to the second aspect of the present invention, there is also provided a communication apparatus of a wireless local area network, for an access point device, the communication apparatus of the wireless local area network including: the generating module is used for generating a wake-up message frame, and the wake-up message frame comprises a counting identification bit and a basic service set parameter change identification bit; and the sending module is configured to send the wake-up message frame to the station device, where a value of the count identification bit is increased by 1 when a basic service set parameter of the access point device changes, the value of the count identification bit is used by the station device to determine whether the basic service set parameter changes, and the value of the basic service set parameter change identification bit is used by the station device to determine whether to immediately wake up a main communication interface of the station device.
In the technical scheme, after a main communication interface of a station device enters a sleep state, a basic service set parameter of an access point device associated with the station device may change, in order to timely notify a change situation of the basic service set parameter of the station device, a count flag bit and a basic service set parameter change flag bit may be set in a wake-up message frame sent to the station device, where a value of the count flag bit may be automatically increased by 1 when the basic service set parameter of the access point device changes, and then the station device may determine whether the basic service set parameter of the access point device changes according to a value of the count flag bit in the received wake-up message frame, and when it is determined that the change occurs, the station device may determine whether to immediately wake up the main communication interface of the station device to obtain the changed basic service set parameter sent by the access point device according to the value of the basic service set parameter change flag bit, therefore, whether the station equipment needs to immediately wake up the main communication interface of the station equipment to acquire the changed basic service set parameters of the access point equipment can be determined according to different change types of the basic service set parameters, so that the equipment is more power-saving, and the requirements of IEEE802.11ba are met.
In the above technical solution, preferably, when the value of the basic service set parameter change flag bit is a first value, the station device is configured to instruct the station device to immediately wake up the main communication interface to receive the changed basic service set parameter; and when the value of the basic service set parameter change identification bit is a second value, the secondary communication interface is used for instructing the station equipment to listen to a beacon frame broadcast by the access point equipment so as to receive the changed basic service set parameters.
In the technical scheme, when determining whether the station device needs to immediately wake up the main communication interface according to different change types of the basic service set parameters, specifically, when the value of the basic service set parameter change identification bit is a first value, it indicates that the access point device has a change in parameters related to a communication channel, such as a communication channel of the access point device or a quiet period of the access point device, or indicates that the BSS basic parameters of the access point device have a change, such as a change in a basic parameter carried by the access point device when broadcasting a beacon frame or a change in a broadcast period of a WUR beacon frame, and at this time, the main communication interface of the station device needs to be immediately woken up to obtain the changed basic service set parameters to reestablish association with the access point device; when the value of the basic service set parameter change identification bit is the second value, it indicates that the parameters related to the communication performance of the access point device are changed, such as EDCA parameters and the like, or indicates that the basic BSS parameters of the access point device are not changed, and at this time, the station device does not need to immediately wake up the main communication interface of the station device, and can acquire the changed basic service set parameters only by instructing the station device to listen to the beacon frame broadcast by the access point device through the secondary communication interface, so that the device can save power consumption.
Further specifically, the access point device may obtain the changed basic service set parameters by receiving a request frame sent by the main communication interface of the station device, which is awakened immediately, so as to re-establish association with the access point device, where the request frame may be a probe request frame; further preferably, the first value may be taken as "0" and the second value may be taken as "1".
In any of the above technical solutions, preferably, the generating module is specifically configured to: and setting the counting identification bit and the basic service set parameter change identification bit as an information element of the wake-up message frame.
In the technical scheme, on one hand, the counting identification bit and the basic service set parameter change identification bit can be combined into a new information element to be placed in the wake-up message frame, so that the station equipment can directly and efficiently analyze the counting identification bit and the basic service set parameter change identification bit at one time.
In any of the above technical solutions, preferably, the generating module is specifically configured to: and positioning the counting identification bit and the basic service set parameter change identification in the MAC frame header part of the wake-up message frame.
In this technical solution, on the other hand, the counting flag bit and the basic service set parameter change flag may also be located in the MAC frame header of the wake-up message frame, so that the station device may obtain the counting flag bit and the basic service set parameter change flag bit together when analyzing the information in the MAC frame header of the wake-up message frame.
According to a third aspect of the present invention, an access point device is further provided, which includes the communication apparatus of the wireless local area network in any one of the above-mentioned technical solutions of the second aspect, so that the access point device has the same technical effects as the communication apparatus of the wireless local area network in any one of the above-mentioned technical solutions of the second aspect, and details are not repeated here.
According to the fourth aspect of the present invention, there is also provided a communication method of a wireless local area network, where the communication method of the wireless local area network is used for a station device, and includes: receiving a wake-up message frame sent by access point equipment, wherein the wake-up message frame comprises a basic service set parameter change identification bit and a counting identification bit; when the change of the basic service set parameters is determined according to the current value of the counting identification bits, the value of the basic service set parameter change identification bits is obtained; and determining whether to immediately wake up the main communication interface of the station equipment according to the value of the basic service set parameter change identification bit.
In this technical solution, the station device may determine whether a basic service set parameter of the access point device changes according to a current value of a count flag in a received wake-up message frame, and further determine whether the primary communication interface of the station device needs to be immediately woken up to obtain a basic service set parameter sent and changed by the access point device according to a value of the basic service set parameter change flag in the obtained wake-up message frame when the change is determined, so that it may be determined whether the station device needs to immediately wake up the primary communication interface thereof to obtain the changed basic service set parameter of the access point device according to different change types of the basic service set parameter, thereby enabling the device to save more power and meeting the requirements of IEEE802.11 ba.
In the foregoing technical solution, preferably, the step of determining whether to immediately wake up the primary communication interface of the station device according to the value of the basic service set parameter change identification bit specifically includes: when the value of the basic service set parameter change identification bit is a first value, immediately waking up a main communication interface of the site equipment according to the wake-up message frame to receive the changed basic service set parameter; and when the value of the basic service set parameter change identification bit is a second value, indicating a secondary communication interface of the site equipment to monitor a beacon frame broadcasted by the access point equipment according to the wake-up message frame so as to receive the changed basic service set parameter.
In the technical scheme, when determining whether the station device needs to immediately wake up the main communication interface according to different change types of the basic service set parameters, specifically, when the value of the basic service set parameter change identification bit is a first value, it indicates that the access point device has a change in parameters related to a communication channel, such as a communication channel of the access point device or a quiet period of the access point device, or indicates that the BSS basic parameters of the access point device have a change, such as a change in a basic parameter carried by the access point device when broadcasting a beacon frame or a change in a broadcast period of a WUR beacon frame, and at this time, the main communication interface of the station device needs to be immediately woken up to obtain the changed basic service set parameters to reestablish association with the access point device; when the value of the basic service set parameter change identification bit is the second value, it indicates that the parameters related to the communication performance of the access point device are changed, such as EDCA parameters and the like, or indicates that the basic BSS parameters of the access point device are not changed, and at this time, the station device does not need to immediately wake up the main communication interface of the station device, and can acquire the changed basic service set parameters only by instructing the station device to listen to the beacon frame broadcast by the access point device through the secondary communication interface, so that the device can save power consumption.
Further specifically, the station device may send a request frame to the access point device through the main communication interface where the station device is immediately wakened up, so as to acquire the changed basic service set parameters of the access point device, thereby reestablishing association with the access point device, where the request frame may be a probe request frame; further preferably, the first value may be taken as "0" and the second value may be taken as "1".
In any of the above technical solutions, preferably, the communication method of the wireless local area network further includes, before the step of obtaining the value of the basic service set parameter change identification bit: when the current value of the counting identification bit is changed compared with the reference value of the counting identification bit stored in the site equipment, determining that the parameter of the basic service set is changed; and storing the current value of the count flag as a new reference value of the count flag.
In the technical solution, considering that a value of a count flag in a wake-up message frame is automatically increased by 1 when a basic service set parameter of an access point device changes, before a station device acquires a value of the basic service set parameter change flag, the station device may determine whether the basic service set parameter of the access point device changes according to a comparison between a current value of the count flag in a currently received wake-up message frame and a reference value of the count flag stored in the count flag, and if the current value of the count flag changes (i.e., increases) compared with the reference value of the count flag, the station device may determine that the basic service set parameter of the access point device has changed, and may further determine whether the station device needs to wake up a main communication interface immediately according to different change types of the basic service set parameter, and simultaneously replace the stored reference value of the count flag with the current value of the count flag, and using the new reference value as the counting identification bit for next comparison to determine whether the basic service set parameter of the access point device changes.
According to the fifth aspect of the present invention, there is further provided a communication apparatus of a wireless local area network, where the communication apparatus of the wireless local area network is used for a station device, and the communication apparatus of the wireless local area network includes: a receiving module, configured to receive a wake-up message frame sent by an access point device, where the wake-up message frame includes a basic service set parameter change flag bit and a count flag bit; the acquisition module is used for acquiring the value of the basic service set parameter change identification bit when the basic service set parameter is determined to change according to the current value of the counting identification bit; and the processing module is used for determining whether to immediately wake up the main communication interface of the site equipment according to the value of the basic service set parameter change identification bit.
In this technical solution, the station device may determine whether a basic service set parameter of the access point device changes according to a current value of a count flag in a received wake-up message frame, and further determine whether the primary communication interface of the station device needs to be immediately woken up to obtain a basic service set parameter sent and changed by the access point device according to a value of the basic service set parameter change flag in the obtained wake-up message frame when the change is determined, so that it may be determined whether the station device needs to immediately wake up the primary communication interface thereof to obtain the changed basic service set parameter of the access point device according to different change types of the basic service set parameter, thereby enabling the device to save more power and meeting the requirements of IEEE802.11 ba.
In the foregoing technical solution, preferably, the processing module is specifically configured to: when the value of the basic service set parameter change identification bit is a first value, immediately waking up a main communication interface of the site equipment according to the wake-up message frame to receive the changed basic service set parameter; and when the value of the basic service set parameter change identification bit is a second value, indicating a secondary communication interface of the site equipment to monitor a beacon frame broadcasted by the access point equipment according to the wake-up message frame so as to receive the changed basic service set parameter.
In the technical scheme, when determining whether the station device needs to immediately wake up the main communication interface according to different change types of the basic service set parameters, specifically, when the value of the basic service set parameter change identification bit is a first value, it indicates that the access point device has a change in parameters related to a communication channel, such as a communication channel of the access point device or a quiet period of the access point device, or indicates that the BSS basic parameters of the access point device have a change, such as a change in a basic parameter carried by the access point device when broadcasting a beacon frame or a change in a broadcast period of a WUR beacon frame, and at this time, the main communication interface of the station device needs to be immediately woken up to obtain the changed basic service set parameters to reestablish association with the access point device; when the value of the basic service set parameter change identification bit is the second value, it indicates that the parameters related to the communication performance of the access point device are changed, such as EDCA parameters and the like, or indicates that the basic BSS parameters of the access point device are not changed, and at this time, the station device does not need to immediately wake up the main communication interface of the station device, and can acquire the changed basic service set parameters only by instructing the station device to listen to the beacon frame broadcast by the access point device through the secondary communication interface, so that the device can save power consumption.
Further specifically, the station device may send a request frame to the access point device through the main communication interface where the station device is immediately wakened up, so as to acquire the changed basic service set parameters of the access point device, thereby reestablishing association with the access point device, where the request frame may be a probe request frame; further preferably, the first value may be taken as "0" and the second value may be taken as "1".
In any of the above technical solutions, preferably, the communication apparatus of the wireless local area network further includes: the determining module is used for determining that the basic service set parameters have changed when the current value of the counting identification bit is changed compared with the reference value of the counting identification bit stored by the site equipment before the obtaining module obtains the value of the basic service set parameter change identification bit; and the storage module is used for storing the current value of the counting identification bit as a new reference value of the counting identification bit.
In the technical solution, considering that a value of a count flag in a wake-up message frame is automatically increased by 1 when a basic service set parameter of an access point device changes, before a station device acquires a value of the basic service set parameter change flag, the station device may determine whether the basic service set parameter of the access point device changes according to a comparison between a current value of the count flag in a currently received wake-up message frame and a reference value of the count flag stored in the count flag, and if the current value of the count flag changes (i.e., increases) compared with the reference value of the count flag, the station device may determine that the basic service set parameter of the access point device has changed, and may further determine whether the station device needs to wake up a main communication interface immediately according to different change types of the basic service set parameter, and simultaneously replace the stored reference value of the count flag with the current value of the count flag, and using the new reference value as the counting identification bit for next comparison to determine whether the basic service set parameter of the access point device changes.
According to a sixth aspect of the present invention, a station device is further provided, which includes the communication apparatus of the wireless local area network in any one of the above-mentioned technical solutions of the fifth aspect, so that the station device has the same technical effects as the communication apparatus of the wireless local area network in any one of the above-mentioned technical solutions of the fifth aspect, and details thereof are omitted here.
Through the technical scheme of the invention, when the basic service set parameters of the access point equipment change, whether the station equipment needs to immediately wake up the main communication interface of the station equipment to obtain the changed basic service set parameters can be determined according to different change types of the basic service set parameters, so that the equipment is more power-saving, and the requirements of IEEE802.11ba are met.
Drawings
Fig. 1 is a flowchart illustrating a communication method for a wireless lan of an access point device according to an embodiment of the present invention;
fig. 2 shows a schematic block diagram of a communication apparatus of a wireless local area network for an access point device according to an embodiment of the present invention;
fig. 3 shows a schematic block diagram of an access point device of an embodiment of the invention;
fig. 4 is a flowchart illustrating a communication method for a wireless local area network of a station device according to an embodiment of the present invention;
fig. 5 shows a schematic block diagram of a communication apparatus of a wireless local area network for a station device of an embodiment of the present invention;
FIG. 6 shows a schematic block diagram of a site device of an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating system interaction between an access point device and a station device according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 is a flowchart illustrating a communication method for a wireless local area network of an access point device according to an embodiment of the present invention.
As shown in fig. 1, a communication method of a wireless local area network according to an embodiment of the present invention is used for an access point device, and specifically includes the following steps:
step 102, generating a wake-up message frame, wherein the wake-up message frame comprises a counting identification bit and a basic service set parameter change identification bit.
And step 104, sending a wake-up message frame to the station device, where the value of the count flag bit is increased by 1 when the basic service set parameter of the access point device changes, the value of the count flag bit is used for the station device to determine whether the basic service set parameter changes, and the value of the basic service set parameter change flag bit is used for the station device to determine whether to immediately wake up the main communication interface of the station device.
In this embodiment, after the primary communication interface of the station device enters the sleep state, the basic service set parameter of the access point device associated with the station device may change, in order to notify the station device of the change of the basic service set parameter in time, a count flag bit and a basic service set parameter change flag bit may be set in a wake-up message frame sent to the station device, where a value of the count flag bit may be automatically increased by 1 when the basic service set parameter of the access point device changes, and then the station device may determine whether the basic service set parameter of the access point device changes according to a value of the count flag bit in the received wake-up message frame, and when determining that the change occurs, the station device may determine whether to immediately wake up the primary communication interface of the station device to obtain the basic service set parameter sent by the access point device, therefore, whether the station equipment needs to immediately wake up the main communication interface of the station equipment to acquire the changed basic service set parameters of the access point equipment can be determined according to different change types of the basic service set parameters, so that the equipment is more power-saving, and the requirements of IEEE802.11ba are met.
Further, in the above embodiment, when the value of the basic service set parameter change identification bit is a first value, the station device is configured to instruct the station device to immediately wake up the primary communication interface to receive the changed basic service set parameter; and when the value of the basic service set parameter change identification bit is a second value, the secondary communication interface is used for instructing the station equipment to listen to a beacon frame broadcast by the access point equipment so as to receive the changed basic service set parameters.
In this embodiment, when determining whether the station device needs to immediately wake up its main communication interface according to different change types of the basic service set parameters, specifically, when the value of the basic service set parameter change identification bit is the first value, it indicates that the access point device has a parameter related to a communication channel, such as a communication channel of the access point device or a quiet period of the access point device, or indicates that the BSS basic parameter of the access point device has a change, such as a basic parameter carried by the access point device when broadcasting a beacon frame or a broadcast period of a WUR beacon frame has a change, and at this time, it needs to immediately wake up the main communication interface of the station device to acquire the changed basic service set parameter to re-establish association with the access device; when the value of the basic service set parameter change identification bit is the second value, it indicates that the parameters related to the communication performance of the access point device are changed, such as EDCA parameters and the like, or indicates that the basic BSS parameters of the access point device are not changed, and at this time, the station device does not need to immediately wake up the main communication interface of the station device, and can acquire the changed basic service set parameters only by instructing the station device to listen to the beacon frame broadcast by the access point device through the secondary communication interface, so that the device can save power consumption.
Further specifically, the access point device may obtain the changed basic service set parameters by receiving a request frame sent by the main communication interface of the station device, which is awakened immediately, so as to re-establish association with the access point device, where the request frame may be a probe request frame; further preferably, the first value may be taken as "0" and the second value may be taken as "1".
Further, in an embodiment of the present invention, the step 102 specifically includes: and setting the counting identification bit and the basic service set parameter change identification bit as an information element of the wake-up message frame.
It is understood that the counting flag and the bss parameter change flag may be combined into a new information element to be placed in the wake-up message frame, so that the station device can directly and efficiently parse out the counting flag and the bss parameter change flag at one time.
For example, in the wake-up message frame, if the length of the new information element is set to 8 bits, 7 bits of the new information element can be used as the counting flag and another bit can be used as the bss parameter change flag.
Further, in another embodiment of the present invention, the step 102 specifically includes: and positioning the counting identification bit and the basic service set parameter change identification in the MAC frame header part of the wake-up message frame.
It can be understood that the counting flag bit and the bss parameter change flag bit may also be located in the MAC frame header of the wake-up message frame, so that the station device may obtain the counting flag bit and the bss parameter change flag bit together when parsing information in the MAC frame header of the wake-up message frame.
For example, in the MAC frame header of the wake-up message frame, 4 bits thereof may be used as the counting flag and 1 bit thereof may be used as the bss parameter change flag.
The main implementation of the communication method shown in fig. 1 is an access point device in a network formed by an access point device and a station device, such as a router or a server with a Wi-Fi interface.
Fig. 2 shows a schematic block diagram of a communication apparatus of a wireless local area network for an access point device according to an embodiment of the present invention.
As shown in fig. 2, a communication apparatus 20 of a wireless local area network according to an embodiment of the present invention is used for an access point device, and the communication apparatus 20 of the wireless local area network includes: a generation module 202 and a sending module 204.
The generating module 202 is configured to generate a wake-up message frame, where the wake-up message frame includes a count flag bit and a basic service set parameter change flag bit; the sending module 204 is configured to send the wake-up message frame to the station device, where a value of the count flag bit is increased by 1 when a basic service set parameter of the access point device changes, the value of the count flag bit is used for the station device to determine whether the basic service set parameter changes, and the value of the basic service set parameter change flag bit is used for the station device to determine whether to immediately wake up a main communication interface of the station device.
In this embodiment, after the primary communication interface of the station device enters the sleep state, the basic service set parameter of the access point device associated with the station device may change, in order to notify the station device of the change of the basic service set parameter in time, a count flag bit and a basic service set parameter change flag bit may be set in a wake-up message frame sent to the station device, where a value of the count flag bit may be automatically increased by 1 when the basic service set parameter of the access point device changes, and then the station device may determine whether the basic service set parameter of the access point device changes according to a value of the count flag bit in the received wake-up message frame, and when determining that the change occurs, the station device may determine whether to immediately wake up the primary communication interface of the station device to obtain the basic service set parameter sent by the access point device, therefore, whether the station equipment needs to immediately wake up the main communication interface of the station equipment to acquire the changed basic service set parameters of the access point equipment can be determined according to different change types of the basic service set parameters, so that the equipment is more power-saving, and the requirements of IEEE802.11ba are met.
Further, in the above embodiment, when the value of the basic service set parameter change identification bit is a first value, the station device is configured to instruct the station device to immediately wake up the primary communication interface to receive the changed basic service set parameter; and when the value of the basic service set parameter change identification bit is a second value, the secondary communication interface is used for instructing the station equipment to listen to a beacon frame broadcast by the access point equipment so as to receive the changed basic service set parameters.
In this embodiment, when determining whether the station device needs to immediately wake up its main communication interface according to different change types of the basic service set parameters, specifically, when the value of the basic service set parameter change identification bit is the first value, it indicates that the access point device has a parameter related to a communication channel, such as a communication channel of the access point device or a quiet period of the access point device, or indicates that the BSS basic parameter of the access point device has a change, such as a basic parameter carried by the access point device when broadcasting a beacon frame or a broadcast period of a WUR beacon frame has a change, and at this time, it needs to immediately wake up the main communication interface of the station device to acquire the changed basic service set parameter to re-establish association with the access device; when the value of the basic service set parameter change identification bit is the second value, it indicates that the parameters related to the communication performance of the access point device are changed, such as EDCA parameters and the like, or indicates that the basic BSS parameters of the access point device are not changed, and at this time, the station device does not need to immediately wake up the main communication interface of the station device, and can acquire the changed basic service set parameters only by instructing the station device to listen to the beacon frame broadcast by the access point device through the secondary communication interface, so that the device can save power consumption.
Further specifically, the access point device may obtain the changed basic service set parameters by receiving a request frame sent by the main communication interface of the station device, which is awakened immediately, so as to re-establish association with the access point device, where the request frame may be a probe request frame; further preferably, the first value may be taken as "0" and the second value may be taken as "1".
Further, in an embodiment of the present invention, the generating module 202 may be specifically configured to: and setting the counting identification bit and the basic service set parameter change identification bit as an information element of the wake-up message frame.
It is understood that the counting flag and the bss parameter change flag may be combined into a new information element to be placed in the wake-up message frame, so that the station device can directly and efficiently parse out the counting flag and the bss parameter change flag at one time.
For example, in the wake-up message frame, if the length of the new information element is set to 8 bits, 7 bits of the new information element can be used as the counting flag and another bit can be used as the bss parameter change flag.
Further, in another specific embodiment of the present invention, the generating module 202 may be further specifically configured to: and positioning the counting identification bit and the basic service set parameter change identification in the MAC frame header part of the wake-up message frame.
It can be understood that the counting flag bit and the bss parameter change flag bit may also be located in the MAC frame header of the wake-up message frame, so that the station device may obtain the counting flag bit and the bss parameter change flag bit together when parsing information in the MAC frame header of the wake-up message frame.
For example, in the MAC frame header of the wake-up message frame, 4 bits thereof may be used as the counting flag and 1 bit thereof may be used as the bss parameter change flag.
In a specific implementation, the generating module 202 may be a central processing unit or a baseband processor; the sending module 204 may be a transmitter or an antenna, etc.
Fig. 3 shows a schematic block diagram of an access point device of an embodiment of the invention.
As shown in fig. 3, the access point device 30 according to the embodiment of the present invention includes the communication apparatus 20 of the wireless lan described in the above embodiment, and therefore, the access point device 30 has the same technical effect as the communication apparatus 20 of the wireless lan described in the above embodiment, and is not described again here.
Fig. 4 is a flowchart illustrating a communication method for a wireless local area network of a station device according to an embodiment of the present invention.
As shown in fig. 4, a communication method of a wireless local area network according to an embodiment of the present invention is used for a station device, and specifically includes the following steps:
step 402, receiving a wake-up message frame sent by an access point device, where the wake-up message frame includes a basic service set parameter change flag bit and a count flag bit.
And step 404, when the change of the basic service set parameter is determined according to the current value of the counting identification bit, obtaining the value of the basic service set parameter change identification bit.
Step 406, determining whether to immediately wake up the primary communication interface of the station device according to the value of the basic service set parameter change identification bit.
In this embodiment, the station device may determine whether the basic service set parameter of the access point device changes according to a current value of the count flag in the received wake-up message frame, and further determine whether the primary communication interface of the station device needs to be immediately woken up to obtain the basic service set parameter that is sent and changed by the access point device according to a value of the basic service set parameter change flag in the obtained wake-up message frame when the change is determined, so that it may be determined whether the station device needs to immediately wake up its primary communication interface to obtain the changed basic service set parameter of the access point device according to different change types of the basic service set parameter, thereby enabling the device to save more power and meeting the requirements of IEEE802.11 ba.
Further, in the above embodiment, the step 406 may be specifically executed as: when the value of the basic service set parameter change identification bit is a first value, immediately waking up a main communication interface of the site equipment according to the wake-up message frame to receive the changed basic service set parameter; and when the value of the basic service set parameter change identification bit is a second value, indicating a secondary communication interface of the site equipment to monitor a beacon frame broadcasted by the access point equipment according to the wake-up message frame so as to receive the changed basic service set parameter.
In this embodiment, when determining whether the station device needs to immediately wake up its main communication interface according to different change types of the basic service set parameters, specifically, when the value of the basic service set parameter change identification bit is the first value, it indicates that the access point device has a parameter related to a communication channel, such as a communication channel of the access point device or a quiet period of the access point device, or indicates that the BSS basic parameter of the access point device has a change, such as a basic parameter carried by the access point device when broadcasting a beacon frame or a broadcast period of a WUR beacon frame has a change, and at this time, it needs to immediately wake up the main communication interface of the station device to acquire the changed basic service set parameter to re-establish association with the access device; when the value of the basic service set parameter change identification bit is the second value, it indicates that the parameters related to the communication performance of the access point device are changed, such as EDCA parameters and the like, or indicates that the basic BSS parameters of the access point device are not changed, and at this time, the station device does not need to immediately wake up the main communication interface of the station device, and can acquire the changed basic service set parameters only by instructing the station device to listen to the beacon frame broadcast by the access point device through the secondary communication interface, so that the device can save power consumption.
Further specifically, the station device may send a request frame to the access point device through the main communication interface where the station device is immediately wakened up, so as to acquire the changed basic service set parameters of the access point device, thereby reestablishing association with the access point device, where the request frame may be a probe request frame; further preferably, the first value may be taken as "0" and the second value may be taken as "1".
Further, in the above embodiment, before the step 404, the method for communicating in a wireless local area network further includes: when the current value of the counting identification bit is changed compared with the reference value of the counting identification bit stored in the site equipment, determining that the parameter of the basic service set is changed; and storing the current value of the count flag as a new reference value of the count flag.
In this embodiment, considering that the value of the count flag in the wake-up message frame is automatically increased by 1 when the basic service set parameter of the access point device changes, before the station device obtains the value of the change flag of the basic service set parameter, the station device may determine whether the basic service set parameter of the access point device changes according to a comparison between a current value of the count flag in the currently received wake-up message frame and a reference value of the count flag stored in the count flag, and if the current value of the count flag is compared (i.e., increased) with the reference value of the count flag, the station device may determine that the basic service set parameter of the access point device has changed, may further determine whether the station device needs to wake up its main communication interface immediately according to different change types of the basic service set parameter, and simultaneously need to replace the stored reference value of the count flag with the current value of the count flag, and using the new reference value as the counting identification bit for next comparison to determine whether the basic service set parameter of the access point device changes.
Further, in the above embodiment, specifically, the counting flag and the bss parameter change flag may be placed in the wake-up message frame as a new information element on one hand, and may also be placed in the MAC frame header of the wake-up message frame on the other hand.
For example, in the wake-up message frame, the length of 8 bits is used to represent the new information element, wherein 7 bits are used as the counting flag bit, and the remaining 1 bit is used as the bss parameter change flag bit; or 4 bits in the MAC frame header of the wake-up message frame are used as counting identification bits, and 1 bit is used as a basic service set parameter change identification bit.
The main body of the communication method shown in fig. 4 may be a station device in a network formed by an ap device and a station device, such as a smart phone or a PDA (Personal Digital Assistant).
The interface through which the station device receives the wakeup message frame is a secondary communication interface, and the purpose of receiving the wakeup message frame is to wake up a primary communication interface of the station device to perform communication so as to obtain a downlink data frame buffered by the access point device.
Fig. 5 shows a schematic block diagram of a communication apparatus of a wireless local area network for a station device according to an embodiment of the present invention.
As shown in fig. 5, a communication apparatus 50 of a wireless local area network according to an embodiment of the present invention is used for a station device, where the communication apparatus 50 of the wireless local area network includes: a receiving module 502, an obtaining module 504, and a processing module 506.
The receiving module 502 is configured to receive a wake-up message frame sent by an access point device, where the wake-up message frame includes a basic service set parameter change identification bit and a count identification bit; the obtaining module 504 is configured to obtain a value of the basic service set parameter change flag when it is determined that the basic service set parameter changes according to a current value of the count flag; the processing module 506 is configured to determine whether to immediately wake up the primary communication interface of the station device according to the value of the bss parameter change flag.
In this embodiment, the station device may determine whether the basic service set parameter of the access point device changes according to a current value of the count flag in the received wake-up message frame, and further determine whether the primary communication interface of the station device needs to be immediately woken up to obtain the basic service set parameter that is sent and changed by the access point device according to a value of the basic service set parameter change flag in the obtained wake-up message frame when the change is determined, so that it may be determined whether the station device needs to immediately wake up its primary communication interface to obtain the changed basic service set parameter of the access point device according to different change types of the basic service set parameter, thereby enabling the device to save more power and meeting the requirements of IEEE802.11 ba.
Further, in the foregoing embodiment, the processing module 506 is specifically configured to: when the value of the basic service set parameter change identification bit is a first value, immediately waking up a main communication interface of the site equipment according to the wake-up message frame to receive the changed basic service set parameter; and when the value of the basic service set parameter change identification bit is a second value, indicating a secondary communication interface of the site equipment to monitor a beacon frame broadcasted by the access point equipment according to the wake-up message frame so as to receive the changed basic service set parameter.
In this embodiment, when determining whether the station device needs to immediately wake up its main communication interface according to different change types of the basic service set parameters, specifically, when the value of the basic service set parameter change identification bit is the first value, it indicates that the access point device has a parameter related to a communication channel, such as a communication channel of the access point device or a quiet period of the access point device, or indicates that the BSS basic parameter of the access point device has a change, such as a basic parameter carried by the access point device when broadcasting a beacon frame or a broadcast period of a WUR beacon frame has a change, and at this time, it needs to immediately wake up the main communication interface of the station device to acquire the changed basic service set parameter to re-establish association with the access device; when the value of the basic service set parameter change identification bit is the second value, it indicates that the parameters related to the communication performance of the access point device are changed, such as EDCA parameters and the like, or indicates that the basic BSS parameters of the access point device are not changed, and at this time, the station device does not need to immediately wake up the main communication interface of the station device, and can acquire the changed basic service set parameters only by instructing the station device to listen to the beacon frame broadcast by the access point device through the secondary communication interface, so that the device can save power consumption.
Further specifically, the station device may send a request frame to the access point device through the main communication interface where the station device is immediately wakened up, so as to acquire the changed basic service set parameters of the access point device, thereby reestablishing association with the access point device, where the request frame may be a probe request frame; further preferably, the first value may be taken as "0" and the second value may be taken as "1".
Further, in the above embodiment, the communication apparatus of the wireless local area network further includes: a determination module 508 and a storage module 510, as shown in FIG. 5.
Before the obtaining module 504 obtains the value of the basic service set parameter change identification bit, when the current value of the count identification bit changes compared with the reference value of the count identification bit stored in the site device, the determining module 508 determines that the basic service set parameter has changed; and the storage module 510 is used for storing the current value of the counting identification bit as the new reference value of the counting identification bit.
In this embodiment, considering that the value of the count flag in the wake-up message frame is automatically increased by 1 when the basic service set parameter of the access point device changes, before the station device obtains the value of the change flag of the basic service set parameter, the station device may determine whether the basic service set parameter of the access point device changes according to a comparison between a current value of the count flag in the currently received wake-up message frame and a reference value of the count flag stored in the count flag, and if the current value of the count flag is compared (i.e., increased) with the reference value of the count flag, the station device may determine that the basic service set parameter of the access point device has changed, may further determine whether the station device needs to wake up its main communication interface immediately according to different change types of the basic service set parameter, and simultaneously need to replace the stored reference value of the count flag with the current value of the count flag, and using the new reference value as the counting identification bit for next comparison to determine whether the basic service set parameter of the access point device changes.
Further, in the above embodiment, specifically, the counting flag and the bss parameter change flag may be placed in the wake-up message frame as a new information element on one hand, and may also be placed in the MAC frame header of the wake-up message frame on the other hand.
For example, in the wake-up message frame, the length of 8 bits is used to represent the new information element, wherein 7 bits are used as the counting flag bit, and the remaining 1 bit is used as the bss parameter change flag bit; or 4 bits in the MAC frame header of the wake-up message frame are used as counting identification bits, and 1 bit is used as a basic service set parameter change identification bit.
In a specific implementation, the receiving module 502 may be a receiver or an antenna, etc.; the obtaining module 504, the processing module 506, the determining module 508 and the storing module 510 may be a central processor or a baseband processor, etc.
Fig. 6 shows a schematic block diagram of a station apparatus of an embodiment of the present invention.
As shown in fig. 6, the station device 60 according to the embodiment of the present invention includes the communication apparatus 50 of the wireless local area network described in the foregoing embodiment, and therefore, the station device 60 has the same technical effect as the communication apparatus 50 of the wireless local area network described in the foregoing embodiment, and is not described again here.
Fig. 7 is a schematic diagram illustrating system interaction between an access point device and a station device according to an embodiment of the present invention.
As shown in fig. 7, when the change type of the basic service set parameter represented by the basic service set parameter change identification bit in the wake-up message frame sent by the access point device AP to the station device STA is different, specifically, when the basic service set parameter change identification bit is a first value, it indicates that a parameter related to a communication channel of the access point device changes, such as a communication channel of the access point device or a quiet period of the access point device, or indicates that a BSS basic parameter of the access point device changes, such as a basic parameter carried by the access point device when broadcasting a beacon frame or a broadcast period of a WUR beacon frame changes, and at this time, it is necessary to wake up the main communication interface of the station device immediately; when the basic service set parameter change identification bit is the second value, it indicates that the parameters related to the communication performance of the access point device are changed, such as EDCA parameters and the like, or indicates that the BSS basic parameters of the access point device are not changed, and at this time, it is not necessary to immediately wake up the main communication interface of the station device.
In summary, embodiments of the present invention provide a method for controlling a BSS in a wireless communication system, in consideration of the type of change according to BSS parameters, if a primary communication interface of a station device is not awakened immediately, but the station device listens for changes in BSS parameters in the next beacon frame (beacon frame) broadcast by the access point device, thus, although it is beneficial to save power for the device, since the station device only listens to the variation type of the BSS parameter, without responding to the detected BSS parameter change and confirming to the access point device, so that the access point device can not know whether the station device knows the change condition of the BSS parameter, explicit provisions need to be made as to whether the type of change in specific BSS parameters is to wake up the primary communication interface of the station device immediately or to listen only to Beacon frames, in order to address the need for device power consumption and the operability of changes in BSS parameters of the access point device to be accurately received by the station device.
The technical solution of the present invention is described in detail with reference to the accompanying drawings, when the basic service set parameter of the ap device changes, it may be determined whether the station device needs to immediately wake up its main communication interface to obtain the changed basic service set parameter according to different change types of the basic service set parameter, so that the device is more power-saving, and the requirement of IEEE802.11ba is met.
In the description of the present specification, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and specific meanings of the above terms in the disclosed embodiments may be understood according to specific situations by those of ordinary skill in the art.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A communication method of a wireless local area network, which is used for an access point device, wherein the communication method of the wireless local area network comprises:
generating a wake-up message frame, wherein the wake-up message frame comprises a counting identification bit and a basic service set parameter change identification bit;
sending the wake-up message frame to a station device,
the value of the counting identification bit is increased by 1 when the basic service set parameter of the access point device changes, and the value of the counting identification bit is used for the station device to determine whether the basic service set parameter changes, and the value of the basic service set parameter change identification bit is used for the station device to determine whether to immediately wake up the main communication interface of the station device;
when the value of the basic service set parameter change identification bit is a first value, the station equipment is used for indicating the station equipment to immediately wake up the main communication interface so as to receive the changed basic service set parameter;
and when the value of the basic service set parameter change identification bit is a second value, the secondary communication interface is used for instructing the station equipment to listen to a beacon frame broadcast by the access point equipment so as to receive the changed basic service set parameter.
2. The communication method of the wireless local area network according to claim 1, wherein the step of generating the wake-up message frame specifically includes:
and setting the counting identification bit and the basic service set parameter change identification bit as an information element of the wake-up message frame.
3. The communication method of the wireless local area network according to claim 1, wherein the step of generating the wake-up message frame specifically includes:
and positioning the counting identification bit and the basic service set parameter change identification in the MAC frame header part of the wake-up message frame.
4. A communication method of a wireless local area network, which is used for a station device, and is characterized in that the communication method of the wireless local area network comprises:
receiving a wake-up message frame sent by access point equipment, wherein the wake-up message frame comprises a basic service set parameter change identification bit and a counting identification bit;
when the change of the basic service set parameters is determined according to the current value of the counting identification bit, the value of the basic service set parameter change identification bit is obtained;
determining whether to immediately awaken a main communication interface of the site equipment according to the value of the basic service set parameter change identification bit;
the step of determining whether to immediately wake up the primary communication interface of the site device according to the value of the basic service set parameter change identification bit specifically includes:
when the value of the basic service set parameter change identification bit is a first value, immediately waking up a main communication interface of the site equipment according to the wake-up message frame to receive the changed basic service set parameter;
and when the value of the basic service set parameter change identification bit is a second value, indicating a secondary communication interface of the site equipment to monitor a beacon frame broadcasted by the access point equipment according to the wake-up message frame so as to receive the changed basic service set parameter.
5. The communication method of the wireless local area network according to claim 4,
before the step of obtaining the value of the basic service set parameter change identification bit, the method further comprises: when the current value of the counting identification bit is changed compared with the reference value of the counting identification bit stored by the site equipment, determining that the parameter of the basic service set is changed; and
and storing the current value of the counting identification bit as a new reference value of the counting identification bit.
6. A communication apparatus of a wireless local area network, configured to be used in an access point device, the communication apparatus of the wireless local area network comprising:
the generating module is used for generating a wake-up message frame, and the wake-up message frame comprises a counting identification bit and a basic service set parameter change identification bit;
a sending module, configured to send the wake-up message frame to a site device,
the value of the counting identification bit is increased by 1 when the basic service set parameter of the access point device changes, and the value of the counting identification bit is used for the station device to determine whether the basic service set parameter changes, and the value of the basic service set parameter change identification bit is used for the station device to determine whether to immediately wake up the main communication interface of the station device;
when the value of the basic service set parameter change identification bit is a first value, the station equipment is used for indicating the station equipment to immediately wake up the main communication interface so as to receive the changed basic service set parameter;
and when the value of the basic service set parameter change identification bit is a second value, the secondary communication interface is used for instructing the station equipment to listen to a beacon frame broadcast by the access point equipment so as to receive the changed basic service set parameter.
7. The wlan communication device according to claim 6, wherein the generating module is specifically configured to:
and setting the counting identification bit and the basic service set parameter change identification bit as an information element of the wake-up message frame.
8. The wlan communication device according to claim 6, wherein the generating module is specifically configured to:
and positioning the counting identification bit and the basic service set parameter change identification in the MAC frame header part of the wake-up message frame.
9. A communication apparatus of a wireless local area network, for a station device, the communication apparatus of the wireless local area network comprising:
a receiving module, configured to receive a wake-up message frame sent by an access point device, where the wake-up message frame includes a basic service set parameter change flag bit and a count flag bit;
the acquisition module is used for acquiring the value of the basic service set parameter change identification bit when the basic service set parameter is determined to change according to the current value of the counting identification bit;
the processing module is used for determining whether to immediately awaken a main communication interface of the site equipment according to the value of the basic service set parameter change identification bit;
when the value of the basic service set parameter change identification bit is a first value, immediately waking up a main communication interface of the site equipment according to the wake-up message frame to receive the changed basic service set parameter;
and when the value of the basic service set parameter change identification bit is a second value, indicating a secondary communication interface of the site equipment to monitor a beacon frame broadcasted by the access point equipment according to the wake-up message frame so as to receive the changed basic service set parameter.
10. The communications apparatus of wireless local area network according to claim 9, further comprising:
a determining module, configured to determine that a basic service set parameter has changed when a current value of the count flag changes compared with a reference value of the count flag stored in the site device before the obtaining module obtains a value of the basic service set parameter change flag; and
and the storage module is used for storing the current value of the counting identification bit as a new reference value of the counting identification bit.
11. An access point device, comprising: communication device of a wireless local area network according to any of claims 6 to 8.
12. A station apparatus, comprising: communication device of a wireless local area network according to claim 9 or 10.
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