CN108738114A - Communication means, device, access point apparatus and the site apparatus of WLAN - Google Patents
Communication means, device, access point apparatus and the site apparatus of WLAN Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 199
- 230000008859 change Effects 0.000 claims abstract description 167
- 238000013070 change management Methods 0.000 claims abstract description 100
- 230000004048 modification Effects 0.000 claims abstract description 83
- 238000012986 modification Methods 0.000 claims abstract description 83
- 230000004044 response Effects 0.000 claims description 28
- 230000007246 mechanism Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 8
- 238000001228 spectrum Methods 0.000 abstract description 12
- 238000003860 storage Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 10
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of communication means of WLAN, device, access point apparatus and site apparatus, wherein communication means includes：Determine the multiple value between the maximum wake-up period of site apparatus and the sending time of target beacon frame；Change management message frame is generated and sent according to multiple value, change management message frame is for notifying site apparatus BSS color values to update, wherein, for carrying BSS color value modification informations in change management message frame, multiple value is equal with the BSS color values change reciprocal counter value that BSS color value modification informations include.Technical solution through the invention reduces the generation of communication contention aware, improves the handling capacity of the availability of frequency spectrum and basic service set.
Description
Technical field
The present invention relates to fields of communication technology, wireless in particular to a kind of communication means of WLAN, one kind
The communication device of LAN, a kind of access point apparatus and a kind of site apparatus.
Background technology
In May, 2013, IEEE (Institute of Electrical and Electronics Engineers, electricity
Gas and Electronic Engineering Association) 802.11 set up next-generation Wi-Fi (Wireless Fidelity, be based on IEEE 802.11b
The WLAN of standard) technology seminar HEW (High efficiency WLAN, efficient WLAN), i.e. IEEE
802.11ax, main research point are the handling capacities for improving existing Wi-Fi technology, improve efficiently using efficiency, improving for frequency spectrum
User experience and service quality Q oE (Quality of Experience), and realize and adapted to more than existing Wi-Fi technology
The communication environment of crypto set.
The communication environment of above-mentioned more crypto set refers to that there is more OBSS (Overlapping during communication
Basis Service Set, the basic service set of intersection), if there is more OBSS, then mean during communication
It has more communication contention awares to occur, in order to reduce the generation of communication contention aware, mainly uses following solution at present：
Using the Color mechanism defined in IEEE 802.11ah standards, i.e. AP (Access during standard formulation
Point, access point) in communication process, BSS (Basis Service Set, basic service set) Color values are set, are expressed as
The mark of basic service set, effect be in order to allow site apparatus can preferably distinguish this BSS data and other BSS data
Frame.
As shown in Figure 1, it is assumed that A, B, C respectively represent different AP, the STA (Station, site apparatus) in OBSS
Detect that multiple BSS color values are identical, then associated AP reports the claim frame for changing BSS color values to STA meetings picture.
In the related technology, in order to reduce the power consumption penalty of site apparatus, it is proposed that a kind of PS (Power Saving, power saving)
Pattern, namely when the stand-by time of site apparatus reaches preset time, into dormant state, access point apparatus can set for website
Standby caching downlink data frame, still, how access point apparatus timely and effectively indicates to support the site apparatus of battery saving mode to synchronize
BSS color value modification informations, there is no clear stipulaties in IEEE 802.11ax.
Invention content
The present invention is based at least one problem, it is proposed that a kind of communication technology scheme of WLAN, by true
Determine the multiple value between the maximum wake-up period of site apparatus and the sending time of target beacon frame, wherein multiple value and BSS
The BSS color values change reciprocal counter value carried in color value modification informations is equal so that the website under battery saving mode is set
Standby parsing BSS color value modification informations in time, meanwhile, the reliability and efficiency of the change of BSS color values are improved, is reduced
The generation of communication contention aware, improves the handling capacity of the availability of frequency spectrum and basic service set.
In view of this, embodiment according to the first aspect of the invention, it is proposed that a kind of communication means of WLAN,
Including：Determine the multiple value between the maximum wake-up period of site apparatus and the sending time of target beacon frame；According to multiple value
Change management message frame is generated and sent, change management message frame is used to that site apparatus BSS color values to be notified to update,
In, BSS color value modification informations are carried in change management message frame, multiple value is taken with BSS color value modification informations
The BSS color values change reciprocal counter value of band is equal.
BSS color values are the mark of BSS, wherein if the value of BSS is different to indicate that the coverage area of BSS also differs
Sample.
In addition, access point apparatus includes Wi-Fi router devices, and/or the server for having Wi-Fi communication modules is set
It is standby, and/or have the access node apparatus of Wi-Fi communication modules.
In the technical scheme, by determine site apparatus maximum wake-up period and target beacon frame sending time it
Between multiple value, wherein the BSS color values carried in multiple value and BSS color value modification informations change reciprocal counter
It is worth equal so that the site apparatus under battery saving mode parses BSS color value modification informations in time, meanwhile, improve BSS
The reliability and efficiency of the change of color values, reduce the generation of communication contention aware, improve the availability of frequency spectrum and basic service set
Handling capacity.
For example, AP determine n support battery saving mode STA site apparatus wake-up period, respectively T1, T2 ...,
Tn, wherein maximum wake-up period is Tm, and the sending cycle of change management message frame is Tp, and n, m and p are positive integer ordinal number, and
M is less than or equal to n, and the definition that reciprocal counter value is changed with reference to BSS color values is " The Color Switch
Countdown field is set to the number of TBTTs(Target Beacon Transmission
Time)that remain until the HE AP sending the BSS Color Change Announcement
Element switches to the new BSS color ", accordingly, it is determined that BSS color values change reciprocal counter value with
The equal in number in above-mentioned multiple value of TBTT is set, for example, determines that Tm is 3 times of Tp, therefore, sets the quantity of TBTT as 3,
I.e. BSS color values change reciprocal counter value is 3.
It is worth noting that basic service set proposed by the present invention refers to access point apparatus (association or dereferenced) and website
The network of equipment composition, the frame head that can set change management message frame carry BSS color value modification informations, above-mentioned communication party
Method makes the communication equipment in OBSS be more suitable for the application scenarios of IEEE 802.11ax, improves region handling capacity.
In technical solution, it is preferable that further include：BSS color value modification informations further include the BSS color after change
Value, when BSS color values change reciprocal counter value is decremented to 0, instruction site apparatus is according to the BSS color values after change
Determine access channel and transmitting-receiving power.
In the technical scheme, when the countdown that BSS color values change reciprocal counter value is 0, BSS is indicated
Color values have changed, and the BSS color value modification informations of the carrying of change management message frame are as shown in table 1 below：
Table 1
| Element ID | Length | Element ID extension | Color switch countdown | BSS color |
For example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, so that site apparatus determines CCA values, namely the transmitting-receiving power of adjustment receiver according to BSS color values.
Wherein, the variation of CCA (Clear Channel Assessment, channel idle detection) value refers to communication equipment
Receiver changes the sensitivity of receiver, and for example receiver sensitivity is reduced to -68dBm from -72dBm, that is to say, that receiver
The signal energy that can be perceived becomes -68dBm from -72dBm, when the signal that least energy is -72dBm is transmitted, receives
Machine is not perceived, that is to say, that receiver judges that channel is idle.
Wherein, the value of CCA can be encapsulated in change pipe in the form of information element (Information Element, IE)
It is sent in reason message frame, " Color switch countdown " corresponds to BSS color values and changes reciprocal counter value,
" BSS color " corresponds to BSS color values.
Specifically, for example, " Color switch in the change management message frame that access point apparatus first generates and sends
Countdown " fields are " 7 ", in countdown process, " Color in second change management message frame generated and sent
Switch countdown " fields are decremented to " 6 ", " the Color switch in the 8th change management message frame
When countdown " fields are decremented to " 0 ", instruction site apparatus BSS color values completion is changed to the 8th change management message
" the BSS color " that frame carries.
In technical solution, it is preferable that further include：Beacon frame is generated, beacon frame includes receiving BSS color change letters
The instruction information of breath indicates the BSS color values after information expression site apparatus is changed by competition mechanism.
In the technical scheme, for the communication scenes suitable for battery saving mode, site apparatus generally use TIM competes machine
System obtains the downlink data frame (the BSS color modification informations limited such as the present invention) of caching, in the communication field of TIM competition mechanisms
Part practical communication instruction bit map (access point apparatus by generating TIM is safeguarded) is carried under scape, in beacon frame, it includes
2008, this 2008 are organized into 251 bytes, this 2008 position N (0<N<2007) corresponding in these bytes
Position (position number is N moulds 8) is corresponding, and lowest order is numbered as 0 in these bytes, and highest order is numbered as 7.Wherein, part is practical logical
Each of letter instruction bit map corresponds to one has buffer information to be set in the website of access point apparatus in this basic service concentration
It is standby.
In technical solution, it is preferable that further include：It is sent out by competition mechanism sending beacon frame and not obtaining site apparatus
When the control frame sent, it is constant that setting BSS color values change reciprocal counter value.
In the technical scheme, by sending beacon frame and not obtaining the control that site apparatus sent by competition mechanism
When frame, it may be determined that support that the site apparatus of battery saving mode is not in wake states or communication is interfered, therefore, it is not necessary to after
Continuous setting BSS color values change reciprocal counter value is constant, to stop the change process of BSS color values, is connect to reduce
Enter the power consumption penalty of point device, meanwhile, improve the reliability of the change scheme of BSS color values.
For example, control frame is power-save poll frame (i.e. PS-Poll frames), and access point apparatus sends beacon frame, and instruction website is set
It is standby to obtain down buffer storage data frame, wherein the BSS color values that down buffer storage data frame carries change reciprocal counter value and are
Still the PS-Poll frames of site apparatus feedback have not been obtained in " 7 ", then the BSS color values not carried to down buffer storage data frame
It changes reciprocal counter value and carries out countdown, namely before obtaining PS-Poll frames, BSS color values change reciprocal counter value
It is always " 7 ", to reduce the power consumption penalty of communication device.
In technical solution, it is preferable that control frame is the power-save poll frame of site apparatus feedback.
In the technical scheme, under the traffic scene of TIM competition mechanisms, above-mentioned power-save poll frame (i.e. PS-Poll frames)
Information is indicated including AID (association ID connect identification code), BSS ID and Transmitter Address etc.,
In, AID is a numerical value specified by access point apparatus, to distinguish each associated connection.This identification code is placed in power saving wheel
Ask frame, access point apparatus can be allowed to find out for site apparatus keep in downlink data frame, BSS ID include transmitting terminal at present where BSS
(AP) identification information, this BSS are established from the associated AP, Transmitter Address (transmitting terminal address) connected at present
For the MAC Address of the transmitting terminal (site apparatus) of PS-Poll frames.
Embodiment according to the second aspect of the invention, it is proposed that a kind of communication means of WLAN, including：It obtains
Change management message frame；Parsing change management message frame is to determine BSS color value modification informations, BSS color values change letter
The BSS color values change reciprocal counter value carried in breath is equal with multiple value, wherein multiple value is the maximum of site apparatus
Multiple value between wake-up period and the sending time of target beacon frame.
Wherein, BSS color values are the mark of BSS, wherein if the different coverage area for indicating BSS of the value of BSS
It is different.
In addition, access point apparatus includes Wi-Fi router devices, and/or the server for having Wi-Fi communication modules is set
It is standby, and/or have the access node apparatus of Wi-Fi communication modules.
In the technical scheme, by determine site apparatus maximum wake-up period and target beacon frame sending time it
Between multiple value, wherein the BSS color values carried in multiple value and BSS color value modification informations change reciprocal counter
It is worth equal so that the site apparatus under battery saving mode parses BSS color value modification informations in time, meanwhile, improve BSS
The reliability and efficiency of the change of color values, reduce the generation of communication contention aware, improve the availability of frequency spectrum and basic service set
Handling capacity.
For example, AP determine n support battery saving mode STA site apparatus wake-up period, respectively T1, T2 ...,
Tn, wherein maximum wake-up period is Tm, and the sending cycle of change management message frame is Tp, and n, m and p are positive integer ordinal number, and
M is less than or equal to n, and the definition that reciprocal counter value is changed with reference to BSS color values is " The Color Switch
Countdown field is set to the number of TBTTs(Target Beacon Transmission
Time)that remain until the HE AP sending the BSS Color Change Announcement
Element switches to the new BSS color ", accordingly, it is determined that BSS color values change reciprocal counter value with
The equal in number in above-mentioned multiple value of TBTT is set, for example, determines that Tm is 3 times of Tp, therefore, sets the quantity of TBTT as 3,
I.e. BSS color values change reciprocal counter value is 3.
In technical solution, it is preferable that further include：BSS color value modification informations further include the BSS color after change
Value connects when detecting that BSS color values change reciprocal counter value is decremented to 0 according to the BSS color values determination after change
Enter channel and transmitting-receiving power.
In the technical scheme, by generating and sending change management message frame, change management message frame includes BSS
Color value modification informations, reduce the communication contention aware between different BSS, and site apparatus is made to be determined in time according to BSS color values
CCA values, namely adjust the transmitting-receiving power of receiver.
Wherein, when the countdown that BSS color values change reciprocal counter value is 0, indicate that BSS color values have become
More, the BSS color value modification informations of the carrying of change management message frame are as shown in table 2 below：
Table 2
| Element ID | Length | Element ID extension | Color switch countdown | BSS color |
For example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, so that site apparatus determines CCA values, namely the transmitting-receiving power of adjustment receiver according to BSS color values.
Wherein, the value of CCA can be encapsulated in change pipe in the form of information element (Information Element, IE)
It is sent in reason message frame, " Color switch countdown " corresponds to BSS color values and changes reciprocal counter value,
" BSS color " corresponds to BSS color values.
Specifically, for example, " Color switch in the change management message frame that access point apparatus first generates and sends
Countdown " fields are " 7 ", in countdown process, " Color in second change management message frame generated and sent
Switch countdown " fields are decremented to " 6 ", " the Color switch in the 8th change management message frame
When countdown " fields are decremented to " 0 ", instruction site apparatus BSS color values completion is changed to the 8th change management message
" the BSS color " that frame carries.
In technical solution, it is preferable that further include：In the BSS color values for detecting dereferenced and associated BSS
When color values are identical, change claim frame is generated；Change claim frame is sent to access point apparatus, to indicate that access point apparatus changes
BSS color values.
In the technical scheme, since basic service set proposed by the present invention is suitable for association communication scenes and dereferenced is logical
Believe scene, for example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, namely change claim frame is generated, so that site apparatus determines that CCA values, namely adjustment receive according to BSS color values
The transmitting-receiving power of machine.
In technical solution, it is preferable that change management message frame is in beacon frame, probing response frame and association response frame
It is a kind of.
In the technical scheme, change management message frame is beacon frame (i.e. Beacon), probing response frame (i.e. Probe
) and one kind in association response frame (i.e. (re) association response) response.
Embodiment according to the third aspect of the invention we, it is proposed that a kind of communication device of WLAN, including：It determines
Unit, for determining the multiple value between the maximum wake-up period of site apparatus and the sending time of target beacon frame；It sends single
Member, for generating and sending change management message frame according to multiple value, wherein carry BSS in change management message frame
The BSS color values change reciprocal counter carried in color value modification informations, multiple value and BSS color value modification informations
It is worth equal.
BSS color values are the mark of BSS, wherein if the value of BSS is different to indicate that the coverage area of BSS also differs
Sample.
In addition, access point apparatus includes Wi-Fi router devices, and/or the server for having Wi-Fi communication modules is set
It is standby, and/or have the access node apparatus of Wi-Fi communication modules.
In the technical scheme, by determine site apparatus maximum wake-up period and target beacon frame sending time it
Between multiple value, wherein the BSS color values carried in multiple value and BSS color value modification informations change reciprocal counter
It is worth equal so that the site apparatus under battery saving mode parses BSS color value modification informations in time, meanwhile, improve BSS
The reliability and efficiency of the change of color values, reduce the generation of communication contention aware, improve the availability of frequency spectrum and basic service set
Handling capacity.
For example, AP determine n support battery saving mode STA site apparatus wake-up period, respectively T1, T2 ...,
Tn, wherein maximum wake-up period is Tm, and the sending cycle of change management message frame is Tp, and n, m and p are positive integer ordinal number, and
M is less than or equal to n, and the definition that reciprocal counter value is changed with reference to BSS color values is " The Color Switch
Countdown field is set to the number of TBTTs(Target Beacon Transmission
Time)that remain until the HE AP sending the BSS Color Change Announcement
Element switches to the new BSS color ", accordingly, it is determined that BSS color values change reciprocal counter value with
The equal in number in above-mentioned multiple value of TBTT is set, for example, determines that Tm is 3 times of Tp, therefore, sets the quantity of TBTT as 3,
I.e. BSS color values change reciprocal counter value is 3.
It is worth noting that basic service set proposed by the present invention refers to access point apparatus (association or dereferenced) and website
The network of equipment composition, the frame head that can set change management message frame carry BSS color value modification informations, above-mentioned communication dress
It sets so that the communication equipment in OBSS is more suitable for the application scenarios of IEEE802.11ax, improves region handling capacity.
In technical solution, it is preferable that further include：Indicating unit, BSS color value modification informations further include after changing
BSS color values, for BSS color values change reciprocal counter value be decremented to 0 when, instruction site apparatus according to change after
BSS color values determine access channel and transmitting-receiving power.
In the technical scheme, when the countdown that BSS color values change reciprocal counter value is 0, BSS is indicated
Color values have changed, and the BSS color value modification informations of the carrying of change management message frame are as shown in table 3 below：
Table 3
| Element ID | Length | Element ID extension | Color switch countdown | BSS color |
For example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, so that site apparatus determines CCA values, namely the transmitting-receiving power of adjustment receiver according to BSS color values.
Wherein, the variation of CCA (Clear Channel Assessment, channel idle detection) value refers to communication equipment
Receiver changes the sensitivity of receiver, and for example receiver sensitivity is reduced to -68dBm from -72dBm, that is to say, that receiver
The signal energy that can be perceived becomes -68dBm from -72dBm, when the signal that least energy is -72dBm is transmitted, receives
Machine is not perceived, that is to say, that receiver judges that channel is idle.
Wherein, the value of CCA can be encapsulated in change pipe in the form of information element (Information Element, IE)
It is sent in reason message frame, " Color switch countdown " corresponds to BSS color values and changes reciprocal counter value,
" BSS color " corresponds to BSS color values.
Specifically, for example, " Color switch in the change management message frame that access point apparatus first generates and sends
Countdown " fields are " 7 ", in countdown process, " Color in second change management message frame generated and sent
Switch countdown " fields are decremented to " 6 ", " the Color switch in the 8th change management message frame
When countdown " fields are decremented to " 0 ", instruction site apparatus BSS color values completion is changed to the 8th change management message
" the BSS color " that frame carries.
In technical solution, it is preferable that further include：Generation unit, for generating beacon frame, beacon frame includes receiving
The instruction information of BSS color modification informations indicates the BSS after information expression site apparatus is changed by competition mechanism
Color values.
In the technical scheme, for the communication scenes suitable for battery saving mode, site apparatus generally use TIM competes machine
System obtains the downlink data frame (the BSS color modification informations limited such as the present invention) of caching, in the communication field of TIM competition mechanisms
Part practical communication instruction bit map (access point apparatus by generating TIM is safeguarded) is carried under scape, in beacon frame, it includes
2008, this 2008 are organized into 251 bytes, this 2008 position N (0<N<2007) corresponding in these bytes
Position (position number is N moulds 8) is corresponding, and lowest order is numbered as 0 in these bytes, and highest order is numbered as 7.Wherein, part is practical logical
Each of letter instruction bit map corresponds to one has buffer information to be set in the website of access point apparatus in this basic service concentration
It is standby.
In technical solution, it is preferable that further include：Setting unit, for sending beacon frame and not obtaining site apparatus
When the control frame sent by competition mechanism, it is constant that setting BSS color values change reciprocal counter value.
In the technical scheme, by sending beacon frame and not obtaining the control that site apparatus sent by competition mechanism
When frame, it may be determined that support the site apparatus of battery saving mode to be not in wake states, therefore, it is not necessary to continue that BSS color are arranged
Value change reciprocal counter value is constant, to stop the change process of BSS color values, to reduce the power consumption damage of access point apparatus
It loses, meanwhile, improve the reliability of the change scheme of BSS color values.
For example, control frame is power-save poll frame (i.e. PS-Poll frames), and access point apparatus sends beacon frame, and instruction website is set
It is standby to obtain down buffer storage data frame, wherein the BSS color values that down buffer storage data frame carries change reciprocal counter value and are
Still the PS-Poll frames of site apparatus feedback have not been obtained in " 7 ", then the BSS color values not carried to down buffer storage data frame
It changes reciprocal counter value and carries out countdown, namely before obtaining PS-Poll frames, BSS color values change reciprocal counter value
It is always " 7 ", to reduce the power consumption penalty of communication device.
In technical solution, it is preferable that control frame is the power-save poll frame of site apparatus feedback.
In the technical scheme, under the traffic scene of TIM competition mechanisms, above-mentioned power-save poll frame (i.e. PS-Poll frames)
Information is indicated including AID (association ID connect identification code), BSS ID and Transmitter Address etc.,
In, AID is a numerical value specified by access point apparatus, to distinguish each associated connection.This identification code is placed in power saving wheel
Ask frame, access point apparatus can be allowed to find out for site apparatus keep in downlink data frame, BSS ID include transmitting terminal at present where BSS
(AP) identification information, this BSS are established from the associated AP, Transmitter Address (transmitting terminal address) connected at present
For the MAC Address of the transmitting terminal (site apparatus) of PS-Poll frames.
Embodiment according to the fourth aspect of the invention, it is proposed that a kind of communication device of WLAN, including：It obtains
Unit, for obtaining change management message frame；Resolution unit, for parsing change management message frame to determine BSS color values
Modification information, the BSS color values change reciprocal counter value carried in BSS color value modification informations is equal with multiple value,
Wherein, multiple value is the multiple value between the maximum wake-up period and the sending time of target beacon frame of site apparatus.
Wherein, BSS color values are the mark of BSS, wherein if the different coverage area for indicating BSS of the value of BSS
It is different.
In addition, access point apparatus includes Wi-Fi router devices, and/or the server for having Wi-Fi communication modules is set
It is standby, and/or have the access node apparatus of Wi-Fi communication modules.
In the technical scheme, by determine site apparatus maximum wake-up period and target beacon frame sending time it
Between multiple value, wherein the BSS color values carried in multiple value and BSS color value modification informations change reciprocal counter
It is worth equal so that the site apparatus under battery saving mode parses BSS color value modification informations in time, meanwhile, improve BSS
The reliability and efficiency of the change of color values, reduce the generation of communication contention aware, improve the availability of frequency spectrum and basic service set
Handling capacity.
For example, AP determine n support battery saving mode STA site apparatus wake-up period, respectively T1, T2 ...,
Tn, wherein maximum wake-up period is Tm, and the sending cycle of change management message frame is Tp, and n, m and p are positive integer ordinal number, and
M is less than or equal to n, and the definition that reciprocal counter value is changed with reference to BSS color values is " The Color Switch
Countdownfield is set to the number of TBTTs(Target Beacon Transmission Time)
that remain until the HE AP sending the BSS Color Change Announcementelement
Switches to the new BSS color ", accordingly, it is determined that BSS color values change reciprocal counter value and setting TBTT
It is equal in number in above-mentioned multiple value, for example, determine that Tm is 3 times of Tp, therefore, set the quantity of TBTT as 3 namely BSS
It is 3 that color values, which change reciprocal counter value,.
In technical solution, it is preferable that further include：Detection unit further includes change for BSS color value modification informations
BSS color values afterwards, when detecting that BSS color values change reciprocal counter value is decremented to 0, according to the BSS after change
Color values determine access channel and transmitting-receiving power.
In the technical scheme, by generating and sending change management message frame, change management message frame includes BSS
Color value modification informations, reduce the communication contention aware between different BSS, and site apparatus is made to be determined in time according to BSS color values
CCA values, namely adjust the transmitting-receiving power of receiver.
Wherein, when the countdown that BSS color values change reciprocal counter value is 0, indicate that BSScolor values have changed,
The BSS color value modification informations of the carrying of change management message frame are as shown in table 4 below：
Table 4
| Element ID | Length | Element ID extension | Color switch countdown | BSS color |
For example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, so that site apparatus determines CCA values, namely the transmitting-receiving power of adjustment receiver according to BSS color values.
Wherein, the value of CCA can be encapsulated in change pipe in the form of information element (Information Element, IE)
It is sent in reason message frame, " Color switch countdown " corresponds to BSS color values and changes reciprocal counter value,
" BSS color " corresponds to BSS color values.
Specifically, for example, " Color switch in the change management message frame that access point apparatus first generates and sends
Countdown " fields are " 7 ", in countdown process, " Color in second change management message frame generated and sent
Switch countdown " fields are decremented to " 6 ", " the Color switch in the 8th change management message frame
When countdown " fields are decremented to " 0 ", instruction site apparatus BSS color values completion is changed to the 8th change management message
" the BSS color " that frame carries.
In technical solution, it is preferable that further include：Generation unit, for the BSS color values that detect dereferenced with
When associated BSS color values are identical, change claim frame is generated；Transmission unit is set for sending change claim frame to access point
It is standby, to indicate that access point apparatus changes BSS color values.
In the technical scheme, since basic service set proposed by the present invention is suitable for association communication scenes and dereferenced is logical
Believe scene, for example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, namely change claim frame is generated, so that site apparatus determines that CCA values, namely adjustment receive according to BSS color values
The transmitting-receiving power of machine.
In technical solution, it is preferable that change management message frame is in beacon frame, probing response frame and association response frame
It is a kind of.
In the technical scheme, change management message frame is beacon frame (i.e. Beacon), probing response frame (i.e. Probe
) and one kind in association response frame (i.e. (re) association response) response.
Embodiment according to the fifth aspect of the invention, it is proposed that a kind of access point apparatus, including as appointed in the third aspect
Therefore the communication device for the WLAN that one technical solution proposes has the complete of the communication device of above-mentioned WLAN
Portion's technique effect.
Embodiment according to the sixth aspect of the invention, it is proposed that any in a kind of site apparatus, including such as fourth aspect
Therefore the communication device for the WLAN that item technical solution proposes has the whole of the communication device of above-mentioned WLAN
Technique effect.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
Of the invention and/or additional aspect and advantage will be apparent in the description from combination following accompanying drawings to embodiment
Be readily appreciated that, wherein：
Fig. 1 shows OBSS configuration diagrams in the related technology；
Fig. 2 shows the schematic flow diagrams of the communication means of WLAN according to an embodiment of the invention；
Fig. 3 shows the schematic flow diagram of the communication means of WLAN according to still another embodiment of the invention；
Fig. 4 shows the schematic block diagram of the communication device of WLAN according to an embodiment of the invention；
Fig. 5 shows the schematic block diagram of the communication device of WLAN according to still another embodiment of the invention；
Fig. 6 shows the schematic block diagram of access point apparatus according to an embodiment of the invention；
Fig. 7 shows the schematic block diagram of site apparatus according to an embodiment of the invention.
Specific implementation mode
In order to be more clearly understood that objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific embodiment party
The present invention is further described in detail in formula.It should be noted that in the absence of conflict, embodiments herein and
Feature in embodiment can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 2 shows the schematic flow diagrams of the communication means of WLAN according to an embodiment of the invention.
As shown in Fig. 2, the communication means of WLAN according to an embodiment of the invention, including：Step S202,
Determine the multiple value between the maximum wake-up period of site apparatus and the sending time of target beacon frame；Step S204, according to again
Numerical generation simultaneously sends change management message frame, and change management message frame is used to that site apparatus BSS color values to be notified to update,
Wherein, carry BSS color value modification informations in change management message frame, multiple value in BSS color value modification informations
The BSS color values change reciprocal counter value of carrying is equal.
BSS color values are the mark of BSS, wherein if the value of BSS is different to indicate that the coverage area of BSS also differs
Sample.
In addition, access point apparatus includes Wi-Fi router devices, and/or the server for having Wi-Fi communication modules is set
It is standby, and/or have the access node apparatus of Wi-Fi communication modules.
In the technical scheme, by determine site apparatus maximum wake-up period and target beacon frame sending time it
Between multiple value, wherein the BSS color values carried in multiple value and BSS color value modification informations change reciprocal counter
It is worth equal so that the site apparatus under battery saving mode parses BSS color value modification informations in time, meanwhile, improve BSS
The reliability and efficiency of the change of color values, reduce the generation of communication contention aware, improve the availability of frequency spectrum and basic service set
Handling capacity.
For example, AP determine n support battery saving mode STA site apparatus wake-up period, respectively T1, T2 ...,
Tn, wherein maximum wake-up period is Tm, and the sending cycle of change management message frame is Tp, and n, m and p are positive integer ordinal number, and
M is less than or equal to n, and the definition that reciprocal counter value is changed with reference to BSS color values is " The Color Switch
Countdown field is set to the number of TBTTs(Target Beacon Transmission
Time)that remain until the HE AP sending the BSS Color Change Announcement
Element switches to the new BSS color ", accordingly, it is determined that BSS color values change reciprocal counter value with
The equal in number in above-mentioned multiple value of TBTT is set, for example, determines that Tm is 3 times of Tp, therefore, sets the quantity of TBTT as 3,
I.e. BSS color values change reciprocal counter value is 3.
It is worth noting that basic service set proposed by the present invention refers to access point apparatus (association or dereferenced) and website
The network of equipment composition, the frame head that can set change management message frame carry BSS color value modification informations, above-mentioned communication party
Method makes the communication equipment in OBSS be more suitable for the application scenarios of IEEE802.11ax, improves region handling capacity.
In technical solution, it is preferable that further include：BSS color value modification informations further include the BSS color after change
Value, when BSS color values change reciprocal counter value is decremented to 0, instruction site apparatus is according to the BSS color values after change
Determine access channel and transmitting-receiving power.
In the technical scheme, when the countdown that BSS color values change reciprocal counter value is 0, BSS is indicated
Color values have changed, and the BSS color value modification informations of the carrying of change management message frame are as shown in table 1 below：
Table 1
| Element ID | Length | Element ID extension | Color switch countdown | BSS color |
For example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, so that site apparatus determines CCA values, namely the transmitting-receiving power of adjustment receiver according to BSS color values.
Wherein, the variation of CCA (Clear Channel Assessment, channel idle detection) value refers to communication equipment
Receiver changes the sensitivity of receiver, and for example receiver sensitivity is reduced to -68dBm from -72dBm, that is to say, that receiver
The signal energy that can be perceived becomes -68dBm from -72dBm, when the signal that least energy is -72dBm is transmitted, receives
Machine is not perceived, that is to say, that receiver judges that channel is idle.
Wherein, the value of CCA can be encapsulated in change pipe in the form of information element (Information Element, IE)
It is sent in reason message frame, " Color switch countdown " corresponds to BSS color values and changes reciprocal counter value,
" BSS color " corresponds to BSS color values.
Specifically, for example, " Color switch in the change management message frame that access point apparatus first generates and sends
Countdown " fields are " 7 ", in countdown process, " Color in second change management message frame generated and sent
Switch countdown " fields are decremented to " 6 ", " the Color switch in the 8th change management message frame
When countdown " fields are decremented to " 0 ", instruction site apparatus BSS color values completion is changed to the 8th change management message
" the BSS color " that frame carries.
In technical solution, it is preferable that further include：Beacon frame is generated, beacon frame includes receiving BSS color change letters
The instruction information of breath indicates the BSS color values after information expression site apparatus is changed by competition mechanism.
In the technical scheme, for the communication scenes suitable for battery saving mode, site apparatus generally use TIM competes machine
System obtains the downlink data frame (the BSS color modification informations limited such as the present invention) of caching, in the communication field of TIM competition mechanisms
Part practical communication instruction bit map (access point apparatus by generating TIM is safeguarded) is carried under scape, in beacon frame, it includes
2008, this 2008 are organized into 251 bytes, this 2008 position N (0<N<2007) corresponding in these bytes
Position (position number is N moulds 8) is corresponding, and lowest order is numbered as 0 in these bytes, and highest order is numbered as 7.Wherein, part is practical logical
Each of letter instruction bit map corresponds to one has buffer information to be set in the website of access point apparatus in this basic service concentration
It is standby.
In technical solution, it is preferable that further include：It is sent out by competition mechanism sending beacon frame and not obtaining site apparatus
When the control frame sent, it is constant that setting BSS color values change reciprocal counter value.
In the technical scheme, by sending beacon frame and not obtaining the control that site apparatus sent by competition mechanism
When frame, it may be determined that support the site apparatus of battery saving mode to be not in wake states, therefore, it is not necessary to continue that BSS color are arranged
Value change reciprocal counter value is constant, to stop the change process of BSS color values, to reduce the power consumption damage of access point apparatus
It loses, meanwhile, improve the reliability of the change scheme of BSS color values.
For example, control frame is power-save poll frame (i.e. PS-Poll frames), and access point apparatus sends beacon frame, and instruction website is set
It is standby to obtain down buffer storage data frame, wherein the BSS color values that down buffer storage data frame carries change reciprocal counter value and are
Still the PS-Poll frames of site apparatus feedback have not been obtained in " 7 ", then the BSS color values not carried to down buffer storage data frame
It changes reciprocal counter value and carries out countdown, namely before obtaining PS-Poll frames, BSS color values change reciprocal counter value
It is always " 7 ", to reduce the power consumption penalty of communication device.
In technical solution, it is preferable that control frame is the power-save poll frame of site apparatus feedback.
In the technical scheme, under the traffic scene of TIM competition mechanisms, above-mentioned power-save poll frame (i.e. PS-Poll frames)
Information is indicated including AID (association ID connect identification code), BSS ID and Transmitter Address etc.,
In, AID is a numerical value specified by access point apparatus, to distinguish each associated connection.This identification code is placed in power saving wheel
Ask frame, access point apparatus can be allowed to find out for site apparatus keep in downlink data frame, BSS ID include transmitting terminal at present where BSS
(AP) identification information, this BSS are established from the associated AP, Transmitter Address (transmitting terminal address) connected at present
For the MAC Address of the transmitting terminal (site apparatus) of PS-Poll frames.
Fig. 3 shows the schematic flow diagram of the communication means of WLAN according to still another embodiment of the invention.
As shown in figure 3, the communication means of WLAN according to still another embodiment of the invention, including：Step
S302 obtains change management message frame；Step S304, parsing change management message frame to determine BSS color value modification informations,
The BSS color values change reciprocal counter value carried in BSS color value modification informations is equal with multiple value, wherein multiple
Value is the multiple value between the maximum wake-up period and the sending time of target beacon frame of site apparatus.
Wherein, BSS color values are the mark of BSS, wherein if the different coverage area for indicating BSS of the value of BSS
It is different.
In addition, access point apparatus includes Wi-Fi router devices, and/or the server for having Wi-Fi communication modules is set
It is standby, and/or have the access node apparatus of Wi-Fi communication modules.
In the technical scheme, by determine site apparatus maximum wake-up period and target beacon frame sending time it
Between multiple value, wherein the BSS color values carried in multiple value and BSS color value modification informations change reciprocal counter
It is worth equal so that the site apparatus under battery saving mode parses BSS color value modification informations in time, meanwhile, improve BSS
The reliability and efficiency of the change of color values, reduce the generation of communication contention aware, improve the availability of frequency spectrum and basic service set
Handling capacity.
For example, AP determine n support battery saving mode STA site apparatus wake-up period, respectively T1, T2 ...,
Tn, wherein maximum wake-up period is Tm, and the sending cycle of change management message frame is Tp, and n, m and p are positive integer ordinal number, and
M is less than or equal to n, and the definition that reciprocal counter value is changed with reference to BSS color values is " The Color Switch
Countdown field is set to the number of TBTTs(Target Beacon Transmission
Time)that remain until the HE AP sending the BSS Color Change Announcement
Element switches to the new BSS color ", accordingly, it is determined that BSS color values change reciprocal counter value with
The equal in number in above-mentioned multiple value of TBTT is set, for example, determines that Tm is 3 times of Tp, therefore, sets the quantity of TBTT as 3,
I.e. BSS color values change reciprocal counter value is 3.
In technical solution, it is preferable that further include：BSS color value modification informations further include the BSS color after change
Value connects when detecting that BSS color values change reciprocal counter value is decremented to 0 according to the BSS color values determination after change
Enter channel and transmitting-receiving power.
In the technical scheme, by generating and sending change management message frame, change management message frame includes BSS
Color value modification informations, reduce the communication contention aware between different BSS, and site apparatus is made to be determined in time according to BSS color values
CCA values, namely adjust the transmitting-receiving power of receiver.
Wherein, when the countdown that BSS color values change reciprocal counter value is 0, indicate that BSS color values have become
More, the BSS color value modification informations of the carrying of change management message frame are as shown in table 2 below：
Table 2
| Element ID | Length | Element ID extension | Color switch countdown | BSS color |
For example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, so that site apparatus determines CCA values, namely the transmitting-receiving power of adjustment receiver according to BSS color values.
Wherein, the value of CCA can be encapsulated in change pipe in the form of information element (Information Element, IE)
It is sent in reason message frame, " Color switch countdown " corresponds to BSS color values and changes reciprocal counter value,
" BSS color " corresponds to BSS color values.
Specifically, for example, " Color switch in the change management message frame that access point apparatus first generates and sends
Countdown " fields are " 7 ", in countdown process, " Color in second change management message frame generated and sent
Switch countdown " fields are decremented to " 6 ", " the Color switch in the 8th change management message frame
When countdown " fields are decremented to " 0 ", instruction site apparatus BSS color values completion is changed to the 8th change management message
" the BSS color " that frame carries.
In technical solution, it is preferable that further include：In the BSS color values for detecting dereferenced and associated BSS
When color values are identical, change claim frame is generated；Change claim frame is sent to access point apparatus, to indicate that access point apparatus changes
BSS color values.
In the technical scheme, since basic service set proposed by the present invention is suitable for association communication scenes and dereferenced is logical
Believe scene, for example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, namely change claim frame is generated, so that site apparatus determines that CCA values, namely adjustment receive according to BSS color values
The transmitting-receiving power of machine.
In technical solution, it is preferable that change management message frame is in beacon frame, probing response frame and association response frame
It is a kind of.
In the technical scheme, change management message frame is beacon frame (i.e. Beacon), probing response frame (i.e. Probe
) and one kind in association response frame (i.e. (re) association response) response.
Fig. 4 shows the schematic block diagram of the communication device of WLAN according to an embodiment of the invention
As shown in figure 4, the communication device 400 of WLAN according to an embodiment of the invention, including：It determines single
Member 402, for determining the multiple value between the maximum wake-up period of site apparatus and the sending time of target beacon frame；It sends single
Member 404, for generating and sending change management message frame according to multiple value, wherein carry BSS in change management message frame
The BSS color values change reciprocal counter carried in color value modification informations, multiple value and BSS color value modification informations
It is worth equal.
BSS color values are the mark of BSS, wherein if the value of BSS is different to indicate that the coverage area of BSS also differs
Sample.
In addition, access point apparatus includes Wi-Fi router devices, and/or the server for having Wi-Fi communication modules is set
It is standby, and/or have the access node apparatus of Wi-Fi communication modules.
In the technical scheme, by determine site apparatus maximum wake-up period and target beacon frame sending time it
Between multiple value, wherein the BSS color values carried in multiple value and BSS color value modification informations change reciprocal counter
It is worth equal so that the site apparatus under battery saving mode parses BSS color value modification informations in time, meanwhile, improve BSS
The reliability and efficiency of the change of color values, reduce the generation of communication contention aware, improve the availability of frequency spectrum and basic service set
Handling capacity.
For example, AP determine n support battery saving mode STA site apparatus wake-up period, respectively T1, T2 ...,
Tn, wherein maximum wake-up period is Tm, and the sending cycle of change management message frame is Tp, and n, m and p are positive integer ordinal number, and
M is less than or equal to n, and the definition that reciprocal counter value is changed with reference to BSS color values is " The Color Switch
Countdown field is set to the number of TBTTs(Target Beacon Transmission
Time)that remain until the HE AP sending the BSS Color Change Announcement
Element switches to the new BSS color ", accordingly, it is determined that BSS color values change reciprocal counter value with
The equal in number in above-mentioned multiple value of TBTT is set, for example, determines that Tm is 3 times of Tp, therefore, sets the quantity of TBTT as 3,
I.e. BSS color values change reciprocal counter value is 3.
It is worth noting that basic service set proposed by the present invention refers to access point apparatus (association or dereferenced) and website
The network of equipment composition, the frame head that can set change management message frame carry BSS color value modification informations, above-mentioned communication dress
It sets so that the communication equipment in OBSS is more suitable for the application scenarios of IEEE802.11ax, improves region handling capacity.
It is worth it is emphasized that above-mentioned communication device can be compatible with or be integrated in the hand with Wi-Fi communication modules
The site apparatus such as machine, tablet computer, music player and navigation device, above-mentioned determination unit 402 can be above-mentioned communication dresses
Processor (CPU), controller (MCU), embedded microcontroller chip and baseband processor for setting etc., above-mentioned transmission unit 404 can be with
It is the main transceiver of above-mentioned communication device and/or from transceiver (such as antenna and carrier modulation block), above-mentioned instruction list
Member 406 can be the main transceiver of above-mentioned communication device and/or from transceiver (such as antenna and carrier modulation block).
In technical solution, it is preferable that further include：Indicating unit 406, BSS color value modification informations further include change
BSS color values afterwards, for when BSS color values change reciprocal counter value is decremented to 0, instruction site apparatus to be according to change
BSS color values after more determine access channel and transmitting-receiving power.
In the technical scheme, when the countdown that BSS color values change reciprocal counter value is 0, BSS is indicated
Color values have changed, and the BSS color value modification informations of the carrying of change management message frame are as shown in table 3 below：
Table 3
| Element ID | Length | Element ID extension | Color switch countdown | BSS color |
For example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, so that site apparatus determines CCA values, namely the transmitting-receiving power of adjustment receiver according to BSS color values.
Wherein, the variation of CCA (Clear Channel Assessment, channel idle detection) value refers to communication equipment
Receiver changes the sensitivity of receiver, and for example receiver sensitivity is reduced to -68dBm from -72dBm, that is to say, that receiver
The signal energy that can be perceived becomes -68dBm from -72dBm, when the signal that least energy is -72dBm is transmitted, receives
Machine is not perceived, that is to say, that receiver judges that channel is idle.
Wherein, the value of CCA can be encapsulated in change pipe in the form of information element (Information Element, IE)
It is sent in reason message frame, " Color switch countdown " corresponds to BSS color values and changes reciprocal counter value,
" BSS color " corresponds to BSS color values.
Specifically, for example, " Color switch in the change management message frame that access point apparatus first generates and sends
Countdown " fields are " 7 ", in countdown process, " Color in second change management message frame generated and sent
Switch countdown " fields are decremented to " 6 ", " the Color switch in the 8th change management message frame
When countdown " fields are decremented to " 0 ", instruction site apparatus BSS color values completion is changed to the 8th change management message
" the BSS color " that frame carries.
In technical solution, it is preferable that further include：Generation unit 408, for generating beacon frame, beacon frame includes connecing
The instruction information of BSS color modification informations is received, indicates the BSS after information expression site apparatus is changed by competition mechanism
Color values.
In the technical scheme, for the communication scenes suitable for battery saving mode, site apparatus generally use TIM competes machine
System obtains the downlink data frame (the BSS color modification informations limited such as the present invention) of caching, in the communication field of TIM competition mechanisms
Part practical communication instruction bit map (access point apparatus by generating TIM is safeguarded) is carried under scape, in beacon frame, it includes
2008, this 2008 are organized into 251 bytes, this 2008 position N (0<N<2007) corresponding in these bytes
Position (position number is N moulds 8) is corresponding, and lowest order is numbered as 0 in these bytes, and highest order is numbered as 7.Wherein, part is practical logical
Each of letter instruction bit map corresponds to one has buffer information to be set in the website of access point apparatus in this basic service concentration
It is standby.
Wherein, above-mentioned generating means 408 can be the processor (CPU), controller (MCU), insertion of above-mentioned communication device
Formula microcontroller chip and baseband processor etc..
In technical solution, it is preferable that further include：Setting unit 410, for sending beacon frame and not obtaining website and set
When the standby control frame sent by competition mechanism, it is constant that setting BSS color values change reciprocal counter value.
In the technical scheme, by sending beacon frame and not obtaining the control that site apparatus sent by competition mechanism
When frame, it may be determined that support the site apparatus of battery saving mode to be not in wake states, therefore, it is not necessary to continue that BSS color are arranged
Value change reciprocal counter value is constant, to stop the change process of BSS color values, to reduce the power consumption damage of access point apparatus
It loses, meanwhile, improve the reliability of the change scheme of BSS color values.
Wherein, above-mentioned setting unit 410 can be the encoder of above-mentioned communication device, processor (CPU), controller
(MCU), embedded microcontroller chip and baseband processor etc..
For example, control frame is power-save poll frame (i.e. PS-Poll frames), and access point apparatus sends beacon frame, and instruction website is set
It is standby to obtain down buffer storage data frame, wherein the BSS color values that down buffer storage data frame carries change reciprocal counter value and are
Still the PS-Poll frames of site apparatus feedback have not been obtained in " 7 ", then the BSS color values not carried to down buffer storage data frame
It changes reciprocal counter value and carries out countdown, namely before obtaining PS-Poll frames, BSS color values change reciprocal counter value
It is always " 7 ", to reduce the power consumption penalty of communication device.
In technical solution, it is preferable that control frame is the power-save poll frame of site apparatus feedback.
In the technical scheme, under the traffic scene of TIM competition mechanisms, above-mentioned power-save poll frame (i.e. PS-Poll frames)
Information is indicated including AID (association ID connect identification code), BSS ID and Transmitter Address etc.,
In, AID is a numerical value specified by access point apparatus, to distinguish each associated connection.This identification code is placed in power saving wheel
Ask frame, access point apparatus can be allowed to find out for site apparatus keep in downlink data frame, BSS ID include transmitting terminal at present where BSS
(AP) identification information, this BSS are established from the associated AP, Transmitter Address (transmitting terminal address) connected at present
For the MAC Address of the transmitting terminal (site apparatus) of PS-Poll frames.
Fig. 5 shows the schematic block diagram of the communication device of WLAN according to still another embodiment of the invention.
As shown in figure 5, the communication device 500 of WLAN according to still another embodiment of the invention, including：It obtains
Unit 502, for obtaining change management message frame；Resolution unit 504, for parsing change management message frame to determine BSS
Color value modification informations, the BSS color values change reciprocal counter value and multiple carried in BSS color value modification informations
It is worth equal, wherein multiple value is the multiple value between the maximum wake-up period and the sending time of target beacon frame of site apparatus.
Wherein, BSS color values are the mark of BSS, wherein if the different coverage area for indicating BSS of the value of BSS
It is different.
In addition, access point apparatus includes Wi-Fi router devices, and/or the server for having Wi-Fi communication modules is set
It is standby, and/or have the access node apparatus of Wi-Fi communication modules.
In the technical scheme, by determine site apparatus maximum wake-up period and target beacon frame sending time it
Between multiple value, wherein the BSS color values carried in multiple value and BSS color value modification informations change reciprocal counter
It is worth equal so that the site apparatus under battery saving mode parses BSS color value modification informations in time, meanwhile, improve BSS
The reliability and efficiency of the change of color values, reduce the generation of communication contention aware, improve the availability of frequency spectrum and basic service set
Handling capacity.
For example, AP determine n support battery saving mode STA site apparatus wake-up period, respectively T1, T2 ...,
Tn, wherein maximum wake-up period is Tm, and the sending cycle of change management message frame is Tp, and n, m and p are positive integer ordinal number, and
M is less than or equal to n, and the definition that reciprocal counter value is changed with reference to BSS color values is " The Color Switch
Countdown field is set to the number of TBTTs(Target Beacon Transmission
Time)that remain until the HE AP sending the BSS Color Change Announcement
Element switches to the new BSS color ", accordingly, it is determined that BSS color values change reciprocal counter value with
The equal in number in above-mentioned multiple value of TBTT is set, for example, determines that Tm is 3 times of Tp, therefore, sets the quantity of TBTT as 3,
I.e. BSS color values change reciprocal counter value is 3.
Wherein, it is worth it is emphasized that above-mentioned communication device can be compatible with or be integrated in Wi-Fi communication modules
The site apparatus such as mobile phone, tablet computer, music player and navigation device, above-mentioned acquiring unit 502 can be above-mentioned logical
The main transceiver of T unit and/or from transceiver (such as antenna and carrier modulation block), above-mentioned resolution unit 504 is above-mentioned
Resolver, processor (CPU), controller (MCU), embedded microcontroller chip and baseband processor of communication device etc..
In technical solution, it is preferable that further include：Detection unit 506 further includes for BSS color value modification informations
BSS color values after change, when detecting that BSS color values change reciprocal counter value is decremented to 0, after change
BSS color values determine access channel and transmitting-receiving power.
In the technical scheme, by generating and sending change management message frame, change management message frame includes BSS
Color value modification informations, reduce the communication contention aware between different BSS, and site apparatus is made to be determined in time according to BSS color values
CCA values, namely adjust the transmitting-receiving power of receiver.
Wherein, when the countdown that BSS color values change reciprocal counter value is 0, indicate that BSS color values have become
More, the BSS color value modification informations of the carrying of change management message frame are as shown in table 4 below：
Table 4
| Element ID | Length | Element ID extension | Color switch countdown | BSS color |
For example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, so that site apparatus determines CCA values, namely the transmitting-receiving power of adjustment receiver according to BSS color values.
Wherein, the value of CCA can be encapsulated in change pipe in the form of information element (Information Element, IE)
It is sent in reason message frame, " Color switch countdown " corresponds to BSS color values and changes reciprocal counter value,
" BSS color " corresponds to BSS color values.
Specifically, for example, " Color switch in the change management message frame that access point apparatus first generates and sends
Countdown " fields are " 7 ", in countdown process, " Color in second change management message frame generated and sent
Switch countdown " fields are decremented to " 6 ", " the Color switch in the 8th change management message frame
When countdown " fields are decremented to " 0 ", instruction site apparatus BSS color values completion is changed to the 8th change management message
" the BSS color " that frame carries.
Wherein, above-mentioned detection unit can be processor (CPU), the controller of the above-mentioned communication device of above-mentioned communication device
(MCU), embedded microcontroller chip and baseband processor etc..
In technical solution, it is preferable that further include：Generation unit 508, in the BSS color for detecting dereferenced
When value is identical as associated BSS color values, change claim frame is generated；Transmission unit 510, for sending change claim frame to connecing
Enter point device, to indicate that access point apparatus changes BSS color values.
In the technical scheme, since basic service set proposed by the present invention is suitable for association communication scenes and dereferenced is logical
Believe scene, for example, an AP has been likely to form different BSS (namely foring OBSS) when transmitting different data, is transmitting
When single user extended distance data frame (i.e. Extended Range SU PPDU), BSS1 is formd, is transmitting other data frames
When, form BSS0.And the communication of BSS1 can interfere the communication of BSS2, and the communication of BSS0 then will not be to BSS2's
Communication interferes.In order to reduce the communication contention aware between different BSS, need that access point apparatus is asked to change identical BSS
Color values, namely change claim frame is generated, so that site apparatus determines that CCA values, namely adjustment receive according to BSS color values
The transmitting-receiving power of machine.
Wherein, above-mentioned generation unit 508 can be the processor (CPU), controller (MCU), insertion of above-mentioned communication device
Formula microcontroller chip and baseband processor etc., above-mentioned transmission unit 510 can be above-mentioned communication device main transceiver and/or from
Transceiver (such as antenna and carrier modulation block).
In technical solution, it is preferable that change management message frame is in beacon frame, probing response frame and association response frame
It is a kind of.
In the technical scheme, change management message frame is beacon frame (i.e. Beacon), probing response frame (i.e. Probe
) and one kind in association response frame (i.e. (re) association response) response.
Fig. 6 shows the schematic block diagram of access point apparatus according to an embodiment of the invention.
As shown in fig. 6, access point apparatus 600 according to an embodiment of the invention, including such as any one of Fig. 4 technologies
Therefore the communication device 400 for the WLAN that scheme proposes has the whole of the communication device 400 of above-mentioned WLAN
Technique effect.
Fig. 7 shows the schematic block diagram of site apparatus according to an embodiment of the invention.
As shown in fig. 7, site apparatus 700 according to an embodiment of the invention, including such as any one of Fig. 5 technical sides
Therefore the communication device 500 for the WLAN that case proposes has whole skills of the communication device 500 of above-mentioned WLAN
Art effect.
The steps in the embodiment of the present invention can be sequentially adjusted, merged and deleted according to actual needs.
Unit in terminal of the embodiment of the present invention can be combined, divided and deleted according to actual needs.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of embodiment is can to lead to
It crosses program and is completed to instruct relevant hardware, which can be stored in a computer readable storage medium, storage medium
Including read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), can
Program read-only memory (Programmable Read-only Memory, PROM), Erasable Programmable Read Only Memory EPROM
(Erasable Programmable Read Only Memory, EPROM), disposable programmable read-only memory (One-time
Programmable Read-Only Memory, OTPROM), the electronics formula of erasing can make carbon copies read-only memory
(Electrically-Erasable Programmable Read-Only Memory, EEPROM), CD-ROM (Compact
Disc Read-Only Memory, CD-ROM) or other disk storages, magnetic disk storage, magnetic tape storage or can
Any other computer-readable medium for carrying or storing data.
Technical scheme of the present invention is described in detail above in association with attached drawing, it is contemplated that the wireless local proposed in the related technology
BSS color values change in net, the present invention propose a kind of communication plan of WLAN, pass through
Determine the multiple value between the maximum wake-up period of site apparatus and the sending time of target beacon frame, wherein multiple value and BSS
The BSS color values change reciprocal counter value carried in color value modification informations is equal so that the website under battery saving mode is set
Standby parsing BSS color value modification informations in time, meanwhile, the reliability and efficiency of the change of BSS color values are improved, is reduced
The generation of communication contention aware, improves the handling capacity of the availability of frequency spectrum and basic service set.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification made by all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (20)
1. a kind of communication means of WLAN is suitable for access point apparatus, which is characterized in that the WLAN leads to
Letter method includes：
Determine the multiple value between the maximum wake-up period of site apparatus and the sending time of target beacon frame；
Change management message frame is generated and sent according to the multiple value, the change management message frame is for notifying the website
Equipment BSS color values have updated, wherein BSS color value modification informations are carried in the change management message frame, it is described
Multiple value is equal with the BSS color values change reciprocal counter value carried in the BSS color value modification informations.
2. the communication means of WLAN according to claim 1, which is characterized in that further include：
The BSS color value modification informations further include the BSS color values after change, are fallen in BSS color values change
When counter value is decremented to 0, indicate the site apparatus according to after the change BSS color values determine access channel and
Receive and dispatch power.
3. the communication means of WLAN according to claim 2, which is characterized in that further include：
Beacon frame is generated, the beacon frame includes the instruction information for receiving BSS color modification informations,
The instruction information indicates that the site apparatus obtains the BSS color values after the change by competition mechanism.
4. the communication means of WLAN according to claim 3, which is characterized in that further include：
When sending the beacon frame and not obtaining control frame that the site apparatus is sent by competition mechanism, described in setting
It is constant that BSS color values change reciprocal counter value.
5. the communication means of WLAN according to claim 4, which is characterized in that
The control frame is the power-save poll frame of site apparatus feedback.
6. a kind of communication means of WLAN is suitable for site apparatus, which is characterized in that the communication of the WLAN
Method includes：
Obtain change management message frame；
The change management message frame is parsed to determine BSS color value modification informations, in the BSS color value modification informations
The BSS color values change reciprocal counter value of carrying is equal with multiple value,
Wherein, the multiple value is times between the maximum wake-up period and the sending time of target beacon frame of the site apparatus
Numerical value.
7. the communication means of WLAN according to claim 6, which is characterized in that further include：
The BSS color value modification informations further include the BSS color values after change, are detecting the BSS color values
When change reciprocal counter value is decremented to 0, access channel and transmitting-receiving power are determined according to the BSS color values after the change.
8. the communication means of WLAN according to claim 7, which is characterized in that further include：
When the BSS color values for detecting dereferenced are identical as associated BSS color values, change claim frame is generated；
The change claim frame is sent to described access point equipment, to indicate BSS color described in described access point equipment changing
Value.
9. the communication means of WLAN according to any one of claim 1 to 8, which is characterized in that
The change management message frame is one kind in beacon frame, probing response frame and association response frame.
10. a kind of communication device of WLAN is suitable for access point apparatus, which is characterized in that the WLAN
Communication device includes：
Determination unit, for determining the multiple between the maximum wake-up period of site apparatus and the sending time of target beacon frame
Value；
Transmission unit, for generating and sending the change management message frame according to the multiple value,
Wherein, BSS color value modification informations, the multiple value and the BSS are carried in the change management message frame
The BSS color values change reciprocal counter value carried in color value modification informations is equal.
11. the communication device of WLAN according to claim 10, which is characterized in that further include：
Indicating unit, the BSS color value modification informations further include the BSS color values after change, in the BSS
When color values change reciprocal counter value is decremented to 0, indicate the site apparatus according to the BSS color values after the change
Determine access channel and transmitting-receiving power.
12. the communication device of WLAN according to claim 11, which is characterized in that further include：
Generation unit, for generating beacon frame, the beacon frame includes the instruction information for receiving BSS color modification informations,
The instruction information indicates that the site apparatus obtains the BSS color values after the change by competition mechanism.
13. the communication device of WLAN according to claim 12, which is characterized in that further include：
Setting unit, for sending the beacon frame and not obtaining the control frame that the site apparatus sent by competition mechanism
When, it is constant that the BSS color values change reciprocal counter value is set.
14. the communication device of WLAN according to claim 13, which is characterized in that
The control frame is the power-save poll frame of site apparatus feedback.
15. a kind of communication device of WLAN is suitable for site apparatus, which is characterized in that the WLAN leads to
T unit includes：
Acquiring unit, for obtaining change management message frame；
Resolution unit, for parsing the change management message frame to determine BSS color value modification informations, the BSS
The BSS color values change reciprocal counter value carried in color value modification informations is equal with multiple value,
Wherein, the multiple value is times between the maximum wake-up period and the sending time of target beacon frame of the site apparatus
Numerical value.
16. the communication device of WLAN according to claim 15, which is characterized in that further include：
Detection unit further includes the BSS color values after change for the BSS color value modification informations, detecting
BSS color values change reciprocal counter value is stated when being decremented to 0, access letter is determined according to the BSS color values after the change
Road and transmitting-receiving power.
17. the communication device of WLAN according to claim 16, which is characterized in that further include：
Generation unit, for when the BSS color values for detecting dereferenced are identical as associated BSS color values, generating and becoming
More claim frame；
Transmission unit, for sending the change claim frame to described access point equipment, to indicate described access point equipment changing
The BSS color values.
18. the communication device of the WLAN according to any one of claim 10 to 17, which is characterized in that
The change management message frame is one kind in beacon frame, probing response frame and association response frame.
19. a kind of access point apparatus, which is characterized in that including：
The communication device of WLAN as described in claim 10 to 14, any one of 18.
20. a kind of site apparatus, which is characterized in that including：
The communication device of WLAN as described in any one of claim 15 to 18.
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| CN110933689A (en) * | 2019-11-20 | 2020-03-27 | 普联技术有限公司 | Method and device for determining BSS Color value, terminal equipment and storage medium |
| CN111711978A (en) * | 2020-05-29 | 2020-09-25 | 广州视源电子科技股份有限公司 | BSS coloring method and device in proximity-aware network and wireless access equipment |
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