CN108738114B

CN108738114B - Communication method and device of wireless local area network, access point equipment and site equipment

Info

Publication number: CN108738114B
Application number: CN201710272418.1A
Authority: CN
Inventors: 董贤东
Original assignee: Meizu Technology Co Ltd
Current assignee: Meizu Technology Co Ltd
Priority date: 2017-04-24
Filing date: 2017-04-24
Publication date: 2022-06-07
Anticipated expiration: 2037-04-24
Also published as: CN108738114A

Abstract

The invention provides a communication method, a communication device, access point equipment and site equipment of a wireless local area network, wherein the communication method comprises the following steps: determining a multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame; and generating and sending a change management message frame according to the multiple value, wherein the change management message frame is used for informing the station equipment that the BSS color value is updated, the change management message frame is used for carrying BSS color value change information, and the multiple value is equal to the BSS color value change countdown counter value contained in the BSS color value change information. By the technical scheme of the invention, the occurrence of communication conflict is reduced, and the frequency spectrum utilization rate and the throughput of the basic service set are improved.

Description

Communication method and device of wireless local area network, access point equipment and site 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 2013, IEEE (Institute of Electrical and Electronics Engineers) 802.11 established a research group HEW (High efficiency Wireless local area network) of the next generation Wi-Fi (Wireless Fidelity, Wireless local area network based on IEEE 802.11b standard) technology, i.e., IEEE 802.11ax, and the main research points are to improve the throughput of the existing Wi-Fi technology, improve the effective utilization efficiency of the spectrum, improve the user experience and the quality of service e (quality of qos) and achieve a more intensive communication environment than the existing Wi-Fi technology.

The denser communication environment refers to that there are more OBSSs (Overlapping basic Service Set) in the communication process, if there are more OBSSs, this means that there are more communication conflicts in the communication process, and in order to reduce the occurrence of communication conflicts, the following solutions are mainly adopted at present: in the standard making process, a Color mechanism defined in the IEEE 802.11ah standard is adopted, that is, in the communication process of an AP (Access Point), a BSS (basic Service Set) Color value is Set and expressed as an identifier of a basic Service Set, which is used for enabling a station device to better distinguish data of the BSS from data frames of other BSSs.

As shown in fig. 1, assuming that A, B, C represent different APs, and a STA (Station equipment) in the OBSS detects that multiple BSS color values are the same, the STA will report a request frame for changing the BSS color value as an associated AP.

In the related art, in order to reduce the Power loss of the station device, a PS (Power Saving) mode is proposed, that is, when the standby time of the station device reaches a preset time, the station device enters a sleep state, and the access point device buffers a downlink data frame for the station device, but how the access point device timely and effectively indicates the station device supporting the Power Saving mode to synchronize BSS color value change information is not explicitly specified in IEEE 802.11 ax.

Disclosure of Invention

The invention provides a communication technical scheme of a wireless local area network based on at least one of the problems, and the invention ensures that the station equipment in a power saving mode can timely analyze BSS color value change information by determining the multiple value between the maximum awakening period of the station equipment and the sending time of a target beacon frame, wherein the multiple value is equal to the BSS color value change reciprocal counter value carried in the BSS color value change information, and meanwhile, the reliability and the efficiency of the change of the BSS color value are improved, the occurrence of communication conflict is reduced, and the frequency spectrum utilization rate and the throughput of a basic service set are improved.

In view of this, according to an embodiment of the first aspect of the present invention, a communication method of a wireless local area network is provided, including: determining a multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame; and generating and sending a change management message frame according to the multiple value, wherein the change management message frame is used for informing the station equipment that the BSS color value is updated, the change management message frame carries BSS color value change information, and the multiple value is equal to the BSS color value change countdown counter value carried in the BSS color value change information.

The BSS color value is an identification of the BSS, wherein if the BSS values are different, the coverage of the BSS is different.

In addition, the access point device comprises a Wi-Fi router device, and/or a server device provided with a Wi-Fi communication module, and/or an access node device provided with a Wi-Fi communication module. In the technical scheme, the multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame is determined, wherein the multiple value is equal to the BSS color value change countdown counter value carried in the BSS color value change information, so that the station equipment in the power saving mode can timely analyze the BSS color value change information, meanwhile, the reliability and the efficiency of the change of the BSS color value are improved, the occurrence of communication conflicts is reduced, and the frequency spectrum utilization rate and the throughput of a basic service set are improved.

For example, The AP determines The wakeup periods of station devices of n STAs supporting The power saving mode as T1, T2, … …, and Tn, where The maximum wakeup period is Tm, The Transmission period of The Change management message frame is Tp, n, m, and p are all positive integer numbers, m is less than or equal to n, and The reference BSS Color value Change Countdown counter value is defined as "The Color Switch count field set to The number of TBTTs (Target Beacon Transmission Time) which is equal to The Time value", so that The BSS Color value Change Countdown counter value and The set TBTT number are both equal to The above-mentioned times value, for example, The BSS Tm is determined to be 3 times of Tp, and therefore, The set number of TBTT is 3, that is, The Countdown counter is 3. It should be noted that the basic service set proposed by the present invention refers to a network formed by access point devices (associated or non-associated) and site devices, and may set a frame header of a change management message frame to carry BSS color value change information, and the communication method makes the communication device in the OBSS better adapted to the application scenario of IEEE 802.11ax, thereby improving the area throughput. In the technical solution, preferably, the method further includes: the BSS color value change information also comprises a changed BSS color value, and when the value of the BSS color value change countdown counter is decreased to 0, the station equipment is indicated to determine an access channel and transmitting and receiving power according to the changed BSS color value.

In the technical solution, when the countdown for changing the value of the countdown counter from the BSS color value to 0 indicates that the BSS color value has changed, the BSS color value change information carried by the change management message frame is as shown in the following table 1:

TABLE 1

Element ID

Length

Element ID extension

Color switch countdown

BSS color

For example, an AP may form different BSSs (i.e., OBSS) when transmitting different data, form BSS1 when transmitting single-user Extended Range data frames (i.e., Extended Range SU PPDU), and form BSS0 when transmitting other data frames. And communications of BSS1 will interfere with communications of BSS2, while communications of BSS0 will not interfere with communications of BSS 2. In order to reduce communication conflicts between different BSSs, it is necessary to request the access point device to change the same BSS color value, so that the station device determines the CCA value according to the BSS color value, that is, adjusts the transmit-receive power of the receiver.

Wherein, the variation of CCA (Clear Channel Assessment) value means that the receiver of the communication device changes the sensitivity of the receiver, for example, the receiver sensitivity is reduced from-72 dBm to-68 dBm, that is, the signal energy that the receiver can sense is changed from-72 dBm to-68 dBm, and when the signal with the minimum energy of-72 dBm is transmitted, the receiver cannot sense, that is, the receiver determines that the Channel is idle. The CCA value may be encapsulated in a change management message frame in the form of an Information Element (IE) and transmitted, where "Color switch count down" corresponds to the BSS Color value change countdown value, and "BSS Color" corresponds to the BSS Color value.

Specifically, for example, the "Color switch count" field in the first change management message frame generated and sent by the access point device is "7", the "Color switch count" field in the second change management message frame generated and sent is decremented to "6" in the countdown process, and the "Color switch count" field in the eighth change management message frame is decremented to "0", which indicates that the BSS Color value of the station device is changed to the "BSS Color" carried by the eighth change management message frame.

In the technical solution, preferably, the method further includes: and generating a beacon frame, wherein the beacon frame comprises indication information for receiving the BSS color change information, and the indication information represents that the station equipment obtains the changed BSS color value through a competition mechanism.

In this technical solution, in order to be applicable to a communication scenario of a power saving mode, a station device generally acquires a buffered downlink data frame (such as BSS color change information defined in the present invention) by using a TIM contention mechanism, and in the communication scenario of the TIM contention mechanism, a beacon frame carries a partial actual communication indication bit mapping map (maintained by an access point device that generates the TIM), which includes 2008 bits, where the 2008 bits are organized into 251 bytes, a bit number N of the 2008 bits (0< N <2007) corresponds to a corresponding bit (the bit number is N modulo 8) of the bytes, a lowest bit of the bytes is numbered 0, and a highest bit of the bytes is numbered 7. Wherein each bit of the partial actual communication indication bit map corresponds to a station device having buffered information in the basic service set at the access point device.

In the technical solution, preferably, the method further includes: and when the beacon frame is sent and the control frame sent by the station equipment through the competition mechanism is not obtained, setting the value of the BSS color change countdown counter to be unchanged.

In the technical scheme, when the beacon frame is sent and the control frame sent by the station device through the contention mechanism is not obtained, it can be determined that the station device supporting the power saving mode is not in the awake state or the communication is interfered, so that it is not necessary to continuously set the BSS color value change countdown counter value to suspend the change process of the BSS color value, thereby reducing the power consumption loss of the access point device and improving the reliability of the change scheme of the BSS color value.

For example, the control frame is a power-saving polling frame (i.e., a PS-Poll frame), and the access point device sends a beacon frame to instruct the station device to acquire the downlink buffered data frame, where a BSS color value carried by the downlink buffered data frame is changed to a countdown value of "7", but the PS-Poll frame fed back by the station device is not acquired, and the BSS color value carried by the downlink buffered data frame is not changed to a countdown value, that is, before the PS-Poll frame is acquired, the BSS color value is changed to a countdown value of "7", so as to reduce the power consumption loss of the communication device.

In the technical solution, preferably, the control frame is a power saving polling frame fed back by the station device. In this technical solution, in a communication scenario of the TIM contention mechanism, the power saving polling frame (i.e., the PS-Poll frame) includes indication information such as an AID (association ID), a BSS ID, and a Transmitter Address, where the AID is a value specified by the ap device to distinguish each association connection. The identification code is put into a power-saving polling frame, so that the access point equipment can find out a downlink data frame temporarily stored for the station equipment, the BSS ID comprises identification information of a BSS (AP) where a sending end is located currently, the BSS is established from the AP which is connected with the BSS currently in an associated mode, and a Transmitter Address is the MAC Address of the sending end (station equipment) of the PS-Poll frame.

According to an embodiment of the second aspect of the present invention, a communication method of a wireless local area network is provided, including: acquiring a change management message frame; and analyzing the change management message frame to determine BSS color value change information, wherein the BSS color value change countdown counter value carried in the BSS color value change information is equal to a multiple value, and the multiple value is a multiple value between the maximum awakening period of the station equipment and the sending time of the target beacon frame.

Wherein, the BSS color value is an identifier of the BSS, and if the BSS values are different, the coverage of the BSS is also different.

For example, The AP determines awake periods of station devices of n STAs supporting The power saving mode as T1, T2, … …, and Tn, respectively, where The maximum awake period is Tm, The Transmission period of The Change management message frame is Tp, n, m, and p are all positive integer numbers, and m is less than or equal to n, and The reference BSS Color value Change counter value is defined as "The Color Switch count field is set to The number of TBTTs (Target Beacon Transmission Time) which is remaining equal to The HE AP sensing The BSS Color value Change counter value and The set number of TBTTs are both equal to The above-mentioned multiple value, e.g., it is determined that Tm is 3 times of Tp, and thus, The number of TBTTs is set to 3, that is, The reciprocal counter value Change counter value is 3. In the technical solution, preferably, the method further includes: the BSS color value change information also comprises a changed BSS color value, and when the BSS color value change countdown counter value is decreased to 0, an access channel and transmitting and receiving power are determined according to the changed BSS color value. In the technical scheme, the change management message frame is generated and sent, and contains the BSS color value change information, so that communication conflicts among different BSSs are reduced, the station equipment determines the CCA value in time according to the BSS color value, and the receiving and transmitting power of the receiver is also adjusted.

Wherein, when the countdown of the BSS color value change countdown value is 0, it indicates that the BSS color value has changed, and the BSS color value change information carried by the change management message frame is as shown in the following table 2:

TABLE 2

Element ID

Length

Element ID extension

Color switch countdown

BSS color

The CCA value may be encapsulated in a change management message frame in the form of an Information Element (IE) and transmitted, where "Color switch count down" corresponds to the BSS Color value change countdown value, and "BSS Color" corresponds to the BSS Color value.

In the technical solution, preferably, the method further includes: when detecting that the non-associated BSS color value is the same as the associated BSS color value, generating a change request frame; and sending a change request frame to the access point equipment to indicate the access point equipment to change the BSS color value.

In this technical solution, since the basic service set proposed by the present invention is applicable to an associated communication scenario and a non-associated communication scenario, for example, an AP may form different BSSs (i.e., an OBSS) when transmitting different data, a BSS1 is formed when transmitting a single-user Extended Range data frame (i.e., an Extended Range SU PPDU), and a BSS0 is formed when transmitting other data frames. And communications of BSS1 will cause interference to communications of BSS2, while communications of BSS0 will not cause interference to communications of BSS 2. In order to reduce communication conflicts between different BSSs, it is necessary to request the access point device to change the same BSS color value, that is, to generate a change request frame, so that the station device determines a CCA value according to the BSS color value, that is, to adjust the transmit-receive power of the receiver.

In the technical solution, preferably, the change management message frame is one of a beacon frame, a probe response frame, and an association response frame.

In this technical solution, the change management message frame is one of a Beacon frame (i.e., Beacon), a Probe response frame (i.e., Probe response), and an association response frame (i.e., (re) association response).

According to an embodiment of the third aspect of the present invention, a communication apparatus of a wireless local area network is provided, including: the determining unit is used for determining a multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame; and the sending unit is used for generating and sending a change management message frame according to the multiple value, wherein the change management message frame carries BSS color value change information, and the multiple value is equal to the BSS color value change countdown counter value carried in the BSS color value change information.

In addition, the access point equipment comprises Wi-Fi router equipment, and/or server equipment provided with a Wi-Fi communication module, and/or access node equipment provided with a Wi-Fi communication module. In the technical scheme, the multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame is determined, wherein the multiple value is equal to the BSS color value change countdown counter value carried in the BSS color value change information, so that the station equipment in the power saving mode can timely analyze the BSS color value change information, meanwhile, the reliability and the efficiency of the change of the BSS color value are improved, the occurrence of communication conflicts is reduced, and the frequency spectrum utilization rate and the throughput of a basic service set are improved.

For example, The AP determines The wakeup periods of station devices of n STAs supporting The power saving mode as T1, T2, … …, and Tn, where The maximum wakeup period is Tm, The Transmission period of The Change management message frame is Tp, n, m, and p are all positive integer numbers, m is less than or equal to n, and The reference BSS Color value Change Countdown counter value is defined as "The Color Switch count field set to The number of TBTTs (Target Beacon Transmission Time) which is equal to The Time value", so that The BSS Color value Change Countdown counter value and The set TBTT number are both equal to The above-mentioned times value, for example, The BSS Tm is determined to be 3 times of Tp, and therefore, The set number of TBTT is 3, that is, The Countdown counter is 3. It should be noted that the basic service set proposed by the present invention refers to a network formed by access point devices (associated or not) and site devices, and may set a frame header of a change management message frame to carry BSS color value change information, and the communication device makes the communication device in the OBSS better adapted to the application scenario of IEEE 802.11ax, thereby improving the area throughput. In the technical solution, preferably, the method further includes: and the indication unit is used for indicating the station equipment to determine an access channel and transmitting and receiving power according to the changed BSS color value when the value of the BSS color value change countdown counter is decremented to 0.

In the technical solution, when the countdown for changing the value of the countdown counter from the BSS color value to 0 indicates that the BSS color value has changed, the BSS color value change information carried by the change management message frame is as shown in the following table 3:

TABLE 3

Element ID

Length

Element ID extension

Color switch countdown

BSS color

Wherein, the variation of CCA (Clear Channel assignment) value means that the receiver of the communication device changes the receiver sensitivity, for example, the receiver sensitivity is decreased from-72 dBm to-68 dBm, that is, the signal energy that the receiver can sense is changed from-72 dBm to-68 dBm, and when the signal with the minimum energy of-72 dBm is transmitted, the receiver cannot sense, that is, the receiver determines that the Channel is idle. The CCA value may be encapsulated in a change management message frame in the form of an Information Element (IE) and transmitted, where "Color switch count down" corresponds to the BSS Color value change countdown value, and "BSS Color" corresponds to the BSS Color value.

In the technical solution, preferably, the method further includes: and the generation unit is used for generating a beacon frame, wherein the beacon frame comprises indication information for receiving the BSS color change information, and the indication information indicates that the station equipment obtains the changed BSS color value through a competition mechanism.

In this technical solution, in order to be applicable to a communication scenario of a power saving mode, a station device generally acquires a buffered downlink data frame (such as BSS color change information defined in the present invention) by using a TIM contention mechanism, and in the communication scenario of the TIM contention mechanism, a beacon frame carries a partial actual communication indication bit mapping map (maintained by an access point device that generates the TIM), which includes 2008 bits, where the 2008 bits are organized into 251 bytes, a bit number N of the 2008 bits (0< N <2007) corresponds to a corresponding bit (the bit number is N modulo 8) of the bytes, a lowest bit of the bytes is numbered 0, and a highest bit of the bytes is numbered 7. Wherein each bit of the partial mapping of actual communication indication bits corresponds to a station device having buffering information in the basic service set at the access point device.

In the technical solution, preferably, the method further includes: and the setting unit is used for setting the value of the BSS color change countdown counter to be unchanged when the beacon frame is sent and the control frame sent by the station equipment through the competition mechanism is not obtained.

In the technical scheme, when the beacon frame is sent and the control frame sent by the station equipment through the contention mechanism is not obtained, the station equipment supporting the power saving mode is determined not to be in the awake state, so that it is not necessary to continuously set the value of the BSS color value change countdown counter to be unchanged to stop the change process of the BSS color value, thereby reducing the power loss of the access point equipment and improving the reliability of the BSS color value change scheme.

According to an embodiment of the fourth aspect of the present invention, a communication apparatus of a wireless local area network is provided, including: an acquisition unit for acquiring a change management message frame; and the analysis unit is used for analyzing the change management message frame to determine BSS color value change information, wherein a BSS color value change countdown counter value carried in the BSS color value change information is equal to a multiple value, and the multiple value is a multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame.

For example, The AP determines The wakeup periods of station devices of n STAs supporting The power saving mode as T1, T2, … …, and Tn, where The maximum wakeup period is Tm, The Transmission period of The Change management message frame is Tp, n, m, and p are all positive integer numbers, m is less than or equal to n, and The reference BSS Color value Change Countdown counter value is defined as "The Color Switch count field set to The number of TBTTs (Target Beacon Transmission Time) which is equal to The Time value", so that The BSS Color value Change Countdown counter value and The set TBTT number are both equal to The above-mentioned times value, for example, The BSS Tm is determined to be 3 times of Tp, and therefore, The set number of TBTT is 3, that is, The Countdown counter is 3. In the technical solution, preferably, the method further includes: and the detection unit is used for determining the access channel and the transmitting and receiving power according to the changed BSS color value when detecting that the value of the BSS color value change countdown counter is decreased to 0.

In the technical scheme, the change management message frame is generated and sent, and contains the BSS color value change information, so that communication conflicts among different BSSs are reduced, the station equipment determines the CCA value in time according to the BSS color value, and the receiving and transmitting power of the receiver is also adjusted.

Wherein, when the countdown of the BSS color value change countdown value is 0, it indicates that the BSS color value has changed, and the BSS color value change information carried by the change management message frame is as shown in the following table 4:

TABLE 4

Element ID

Length

Element ID extension

Color switch countdown

BSS color

The CCA value may be encapsulated in a change management message frame in the form of an Information Element (IE) and transmitted, where "Color switch count down" corresponds to a BSS Color value change counter value, and "BSS Color" corresponds to a BSS Color value.

In the technical solution, preferably, the method further includes: a generation unit, configured to generate a change request frame when detecting that a non-associated BSS color value is the same as an associated BSS color value; and the sending unit is used for sending the change request frame to the access point equipment so as to indicate the access point equipment to change the BSS color value.

In this technical solution, since the basic service set proposed by the present invention is applicable to an associated communication scenario and a non-associated communication scenario, for example, one AP may form different BSSs (i.e., OBSS) when transmitting different data, form a BSS1 when transmitting a single-user Extended Range data frame (i.e., Extended Range SU PPDU), and form a BSS0 when transmitting other data frames. And communications of BSS1 will interfere with communications of BSS2, while communications of BSS0 will not interfere with communications of BSS 2. In order to reduce communication conflicts between different BSSs, it is necessary to request the access point device to change the same BSS color value, that is, to generate a change request frame, so that the station device determines a CCA value according to the BSS color value, that is, to adjust the transmit-receive power of the receiver.

According to an embodiment of the fifth aspect of the present invention, an access point device is provided, which includes the communication apparatus of the wireless lan according to any one of the third aspects, and therefore has all the technical effects of the communication apparatus of the wireless lan.

According to an embodiment of the sixth aspect of the present invention, a station apparatus is provided, which includes the communication device of the wireless local area network according to any one of the fourth aspects, and therefore has all the technical effects of the communication device of the wireless local area network.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention and/or additional aspects and advantages will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic diagram of an OBSS architecture in the related art;

fig. 2 shows a schematic flow diagram of a communication method of a wireless local area network according to an embodiment of the invention;

fig. 3 shows a schematic flow chart of a communication method of a wireless local area network according to a further embodiment of the invention;

fig. 4 shows a schematic block diagram of a communication device of a wireless local area network according to an embodiment of the present invention;

fig. 5 shows a schematic block diagram of a communication device of a wireless local area network according to a further embodiment of the present invention;

fig. 6 shows a schematic block diagram of an access point device according to an embodiment of the invention;

fig. 7 shows a schematic block diagram of a station device according to an embodiment of the invention.

Detailed Description

So that the objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof that are illustrated in 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. 2 shows a schematic flow diagram of a communication method of a wireless local area network according to one embodiment of the invention.

As shown in fig. 2, a communication method of a wireless local area network according to an embodiment of the present invention includes: step S202, determining a multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame; and step S204, generating and sending a change management message frame according to the multiple value, wherein the change management message frame is used for informing the station equipment that the BSS color value is updated, the change management message frame carries BSS color value change information, and the multiple value is equal to the BSS color value change countdown counter value carried in the BSS color value change information.

TABLE 1

Element ID

Length

Element ID extension

Color switch countdown

BSS color

In the technical scheme, when the beacon frame is sent and the control frame sent by the station device through the contention mechanism is not obtained, the station device supporting the power saving mode is determined not to be in the awake state, so that it is not necessary to continuously set the value of the BSS color value change countdown counter to be unchanged to suspend the change process of the BSS color value, thereby reducing the power consumption loss of the access point device and improving the reliability of the change scheme of the BSS color value.

In the technical solution, preferably, the control frame is a power-saving polling frame fed back by the station device. In this technical solution, in a communication scenario of the TIM contention mechanism, the power saving polling frame (i.e., the PS-Poll frame) includes indication information such as an AID (association ID), a BSS ID, and a Transmitter Address, where the AID is a value specified by the ap device to distinguish each association connection. The identification code is put into a power-saving polling frame, so that the access point equipment can find out a downlink data frame temporarily stored for the station equipment, the BSS ID comprises identification information of a BSS (AP) where a sending end is located currently, the BSS is established from the AP which is connected with the BSS currently in an associated mode, and a Transmitter Address is the MAC Address of the sending end (station equipment) of the PS-Poll frame.

Fig. 3 shows a schematic flow chart of a communication method of a wireless local area network according to yet another embodiment of the present invention.

As shown in fig. 3, a communication method of a wireless local area network according to still another embodiment of the present invention includes: step S302, acquiring a change management message frame; step S304, the change management message frame is analyzed to determine BSS color value change information, and a BSS color value change countdown counter value carried in the BSS color value change information is equal to a multiple value, where the multiple value is a multiple value between a maximum wake-up period of the station device and a transmission time of the target beacon frame.

For example, The AP determines The wakeup periods of station devices of n STAs supporting The power saving mode as T1, T2, … …, and Tn, where The maximum wakeup period is Tm, The Transmission period of The Change management message frame is Tp, n, m, and p are all positive integer numbers, m is less than or equal to n, and The reference BSS Color value Change Countdown counter value is defined as "The Color Switch count field set to The number of TBTTs (Target Beacon Transmission Time) which is equal to The Time value", so that The BSS Color value Change Countdown counter value and The set TBTT number are both equal to The above-mentioned times value, for example, The BSS Tm is determined to be 3 times of Tp, and therefore, The set number of TBTT is 3, that is, The Countdown counter is 3. In the technical solution, preferably, the method further includes: the BSS color value change information also comprises a changed BSS color value, and when the BSS color value change countdown counter value is decreased to 0, an access channel and the transmitting and receiving power are determined according to the changed BSS color value. In the technical scheme, the change management message frame is generated and sent, and contains the BSS color value change information, so that communication conflicts among different BSSs are reduced, the station equipment determines the CCA value in time according to the BSS color value, and the receiving and transmitting power of the receiver is also adjusted.

When the countdown of the changed BSS color value countdown counter value is 0, it indicates that the BSS color value has been changed, and the BSS color value change information carried in the change management message frame is as shown in table 2 below:

TABLE 2

Element ID

Length

Element ID extension

Color switch countdown

BSS color

Fig. 4 shows a schematic block diagram of a communication device of a wireless local area network according to an embodiment of the present invention.

As shown in fig. 4, a communication apparatus 400 of a wireless local area network according to an embodiment of the present invention includes: a determining unit 402, configured to determine a multiple value between a maximum wakeup period of the station device and a transmission time of the target beacon frame; a sending unit 404, configured to generate and send a change management message frame according to the multiple value, where the change management message frame carries BSS color value change information, and the multiple value is equal to a BSS color value change countdown counter value carried in the BSS color value change information.

For example, The AP determines The wakeup periods of station devices of n STAs supporting The power saving mode as T1, T2, … …, and Tn, where The maximum wakeup period is Tm, The Transmission period of The Change management message frame is Tp, n, m, and p are all positive integer numbers, m is less than or equal to n, and The reference BSS Color value Change Countdown counter value is defined as "The Color Switch count field set to The number of TBTTs (Target Beacon Transmission Time) which is equal to The Time value", so that The BSS Color value Change Countdown counter value and The set TBTT number are both equal to The above-mentioned times value, for example, The BSS Tm is determined to be 3 times of Tp, and therefore, The set number of TBTT is 3, that is, The Countdown counter is 3. It should be noted that the basic service set proposed by the present invention refers to a network formed by access point devices (associated or not) and site devices, and may set a frame header of a change management message frame to carry BSS color value change information, and the communication device makes the communication device in the OBSS better adapted to the application scenario of IEEE 802.11ax, thereby improving the area throughput. It is to be noted that the communication apparatus may be compatible with or integrated with a mobile phone, a tablet computer, a music playing apparatus, a navigation apparatus, and other station devices having a Wi-Fi communication module, the determining unit 402 may be a processor (CPU), a controller (MCU), an embedded micro-control chip, a baseband processor, and the like of the communication apparatus, the transmitting unit 404 may be a master transceiver and/or a slave transceiver (such as an antenna and a carrier modulation module) of the communication apparatus, and the indicating unit 406 may be a master transceiver and/or a slave transceiver (such as an antenna and a carrier modulation module) of the communication apparatus.

In the technical solution, preferably, the method further includes: the indication unit 406, where the BSS color value change information further includes a changed BSS color value, and is configured to indicate, when the value of the BSS color value change countdown counter is decremented to 0, the station device to determine an access channel and a transmit-receive power according to the changed BSS color value.

TABLE 3

Element ID

Length

Element ID extension

Color switch countdown

BSS color

In the technical solution, preferably, the method further includes: a generating unit 408, configured to generate a beacon frame, where the beacon frame includes indication information for receiving BSS color change information, and the indication information indicates that the station device obtains a changed BSS color value through a contention mechanism.

The generating device 408 may be a processor (CPU), a controller (MCU), an embedded micro-control chip, a baseband processor, etc. of the communication device.

In the technical solution, preferably, the method further includes: a setting unit 410, configured to set the value of the BSS color change countdown counter to be unchanged when the beacon frame is sent and a control frame sent by the station device through the contention mechanism is not obtained.

The setting unit 410 may be an encoder, a processor (CPU), a controller (MCU), an embedded micro-control chip, a baseband processor, etc. of the communication device. For example, the control frame is a power-saving polling frame (i.e., a PS-Poll frame), and the access point device sends a beacon frame to instruct the station device to acquire the downlink buffered data frame, where a BSS color value carried by the downlink buffered data frame is changed to a countdown value of "7", but the PS-Poll frame fed back by the station device is not acquired, and the BSS color value carried by the downlink buffered data frame is not changed to a countdown value, that is, before the PS-Poll frame is acquired, the BSS color value is changed to a countdown value of "7", so as to reduce the power consumption loss of the communication device.

Fig. 5 shows a schematic block diagram of a communication device of a wireless local area network according to a further embodiment of the present invention.

As shown in fig. 5, a communication apparatus 500 of a wireless local area network according to another embodiment of the present invention includes: an obtaining unit 502, configured to obtain a change management message frame; an analyzing unit 504, configured to analyze the change management message frame to determine BSS color value change information, where a BSS color value change countdown counter value carried in the BSS color value change information is equal to a multiple value, where the multiple value is a multiple value between a maximum wake-up period of the station device and a sending time of the target beacon frame.

In addition, the access point device comprises a Wi-Fi router device, and/or a server device provided with a Wi-Fi communication module, and/or an access node device provided with a Wi-Fi communication module. In the technical scheme, the multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame is determined, wherein the multiple value is equal to the BSS color value change countdown counter value carried in the BSS color value change information, so that the station equipment in the power saving mode can timely analyze the BSS color value change information, meanwhile, the reliability and the efficiency of change of the BSS color value are improved, the occurrence of communication conflict is reduced, and the frequency spectrum utilization rate and the throughput of a basic service set are improved.

For example, The AP determines The wakeup periods of station devices of n STAs supporting The power saving mode as T1, T2, … …, and Tn, where The maximum wakeup period is Tm, The Transmission period of The Change management message frame is Tp, n, m, and p are all positive integer numbers, m is less than or equal to n, and The reference BSS Color value Change Countdown counter value is defined as "The Color Switch count field set to The number of TBTTs (Target Beacon Transmission Time) which is equal to The Time value", so that The BSS Color value Change Countdown counter value and The set TBTT number are both equal to The above-mentioned times value, for example, The BSS Tm is determined to be 3 times of Tp, and therefore, The set number of TBTT is 3, that is, The Countdown counter is 3. It is worth noting that the communication apparatus may be compatible with or integrated in a mobile phone, a tablet computer, a music playing apparatus, a navigation apparatus and other station devices having a Wi-Fi communication module, the obtaining unit 502 may be a master transceiver and/or a slave transceiver (such as an antenna and a carrier modulation module) of the communication apparatus, and the parsing unit 504 may be a parser, a processor (CPU), a controller (MCU), an embedded micro-control chip, a baseband processor and the like of the communication apparatus.

In the technical solution, preferably, the method further includes: a detecting unit 506, configured to determine the access channel and the transceiving power according to the changed BSS color value when it is detected that the BSS color value change countdown counter value is decremented to 0.

TABLE 4

Element ID

Length

Element ID extension

Color switch countdown

BSS color

The detection unit may be a processor (CPU), a controller (MCU), an embedded micro-control chip, a baseband processor, and the like of the communication device. In the technical solution, preferably, the method further includes: a generating unit 508, configured to generate a change request frame when detecting that the non-associated BSS color value is the same as the associated BSS color value; a sending unit 510, configured to send a change request frame to the access point device to instruct the access point device to change the BSS color value.

The generating unit 508 may be a processor (CPU), a controller (MCU), an embedded micro-control chip, a baseband processor, and the like of the communication apparatus, and the transmitting unit 510 may be a master transceiver and/or a slave transceiver (such as an antenna and a carrier modulation module, and the like) of the communication apparatus.

Fig. 6 shows a schematic block diagram of an access point device according to an embodiment of the invention. As shown in fig. 6, the access point device 600 according to an embodiment of the present invention includes the communication apparatus 400 of the wireless lan proposed in any one of the technical solutions of fig. 4, and therefore has all the technical effects of the communication apparatus 400 of the wireless lan.

Fig. 7 shows a schematic block diagram of a station device according to an embodiment of the invention. As shown in fig. 7, a station apparatus 700 according to an embodiment of the present invention includes the communication device 500 of the wireless lan according to any one of the technical solutions in fig. 5, and therefore has all the technical effects of the communication device 500 of the wireless lan.

The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.

The units in the terminal of the embodiment of the invention can be merged, divided and deleted according to actual needs.

It will be understood by those of ordinary skill in the art that all or part of the steps of the various methods of the embodiments may be implemented by instructions associated with hardware, which may be stored in a computer-readable storage medium, such as Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc-Read Only Memory (CD-ROM), or other Memory, magnetic disk, magnetic tape, or magnetic tape, Or any other medium which can be used to carry or store data and which can be read by a computer.

The technical scheme of the present invention is described in detail above with reference to the accompanying drawings, and in view of the technical problem of BSS color value change in a wireless local area network proposed in the related art, the present invention proposes a communication scheme of a wireless local area network, so that a station device in a power saving mode can analyze BSS color value change information in time by determining a multiple value between a maximum awake period of the station device and a transmission time of a target beacon frame, where the multiple value is equal to a BSS color value change countdown counter value carried in the BSS color value change information, and at the same time, reliability and efficiency of BSS color value change are improved, occurrence of communication collisions is reduced, and a spectrum utilization rate and throughput of a basic service set are improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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

1. A communication method of a wireless local area network is applicable to an access point device, and is characterized in that the communication method of the wireless local area network comprises the following steps:

determining a multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame;

and generating and sending a change management message frame according to the multiple value, wherein the change management message frame is used for notifying that the BSS color value of the station equipment is updated, the change management message frame carries BSS color value change information, and the multiple value is equal to the BSS color value change countdown counter value carried in the BSS color value change information.

2. The communication method of the wireless local area network according to claim 1, further comprising:

the BSS color value change information further comprises a changed BSS color value, and when the BSS color value change countdown counter value is decreased to 0, the station equipment is instructed to determine an access channel and transmitting and receiving power according to the changed BSS color value.

3. The communication method of the wireless local area network according to claim 2, further comprising:

generating a beacon frame including indication information for receiving the BSS color change information,

and the indication information indicates that the station equipment obtains the changed BSS color value through a competition mechanism.

4. The communication method of the wireless local area network according to claim 3, further comprising:

and when the beacon frame is sent and the control frame sent by the station equipment through a competition mechanism is not obtained, setting the value of the BSS color change countdown counter to be unchanged.

5. The communication method of the wireless local area network according to claim 4,

the control frame is a power-saving polling frame fed back by the station equipment.

6. A communication method of a wireless local area network is applicable to station equipment, and is characterized in that the communication method of the wireless local area network comprises the following steps:

acquiring a change management message frame;

analyzing the change management message frame to determine BSS color value change information, wherein the BSS color value change countdown counter value carried in the BSS color value change information is equal to a multiple value,

wherein the multiple value is a multiple value between a maximum wakeup period of the station equipment and a transmission time of a target beacon frame.

7. The communication method of the wireless local area network according to claim 6, further comprising:

the BSS color value change information further comprises a changed BSS color value, and when the BSS color value change countdown counter value is decreased to 0, an access channel and transmitting and receiving power are determined according to the changed BSS color value.

8. The communication method of the wireless local area network according to claim 7, further comprising:

when detecting that the non-associated BSS color value is the same as the associated BSS color value, generating a change request frame;

and sending the change request frame to access point equipment to indicate the access point equipment to change the BSS color value.

9. The communication method of the wireless local area network according to any one of claims 1 to 8,

the change management message frame is one of a beacon frame, a probe response frame, and an association response frame.

10. A communication apparatus of a wireless local area network, adapted to an access point device, the communication apparatus of the wireless local area network comprising:

the determining unit is used for determining a multiple value between the maximum wakeup period of the station equipment and the sending time of the target beacon frame;

a sending unit for generating and sending a change management message frame according to the multiple value,

and the change management message frame carries BSS color value change information, and the times are equal to the BSS color value change countdown counter value carried in the BSS color value change information.

11. The communications apparatus of wireless local area network according to claim 10, further comprising:

and the BSS color value change information further comprises a changed BSS color value, and the BSS color value change information is used for indicating the station equipment to determine an access channel and transmitting and receiving power according to the changed BSS color value when the value of the BSS color value change countdown counter is decremented to 0.

12. The communications apparatus of wireless local area network according to claim 11, further comprising:

a generating unit for generating a beacon frame including indication information for receiving the BSS color change information,

13. The communications apparatus of wireless local area network according to claim 12, further comprising:

and the setting unit is used for setting the BSS color value change countdown counter value unchanged when the beacon frame is sent and the control frame sent by the station equipment through a competition mechanism is not obtained.

14. The communication device of the wireless local area network according to claim 13,

15. The communication apparatus of a wireless local area network according to any one of claims 10 to 14,

16. A communication apparatus of a wireless local area network, adapted to a station device, the communication apparatus of the wireless local area network comprising:

an acquisition unit for acquiring a change management message frame;

an analysis unit for analyzing the change management message frame to determine BSS color value change information, wherein a BSS color value change countdown counter value carried in the BSS color value change information is equal to a multiple value,

17. The apparatus for communicating in a wireless local area network according to claim 16, further comprising:

and the detection unit is used for determining an access channel and transmitting and receiving power according to the changed BSS color value when detecting that the BSS color value change countdown counter value is decremented to 0.

18. The apparatus for communicating in a wireless local area network according to claim 17, further comprising:

a generation unit, configured to generate a change request frame when detecting that a non-associated BSS color value is the same as an associated BSS color value;

and the sending unit is used for sending the change request frame to the access point equipment so as to indicate the access point equipment to change the BSS color value.

19. The communication apparatus of a wireless local area network according to any one of claims 16 to 18,

20. An access point device, comprising:

communication device of a wireless local area network according to any of claims 10 to 15.

21. A station apparatus, comprising:

communication device of a wireless local area network according to any of claims 16 to 19.