A kind of method for sending information and deviceTechnical field
The present invention relates to the communication technologys, especially wireless local area network technology field, are sent more particularly, to a kind of informationMethod and device.
Background technology
With the burst application of wlan network, the continuous densification of deployment of wlan network, network load is also constantly addingThe case where weight, and with the increase of network, the network coverage is overlapped, is also more serious.The efficiency of wlan network, which will appear, to be decreased obviouslyTrend, it is simple to solve the problems, such as this by raising radio interface rate.Therefore, it is small to have set up relevant task for ieee standard tissueGroup is dedicated to solving wlan network efficiency.Wherein, the interference under network-intensive deployment scenario avoids the skill with improved efficiencyArt becomes the hot spot discussed.
In order to allow website before having received radio frames, identify in advance whether this basic service set (BasicService Set, BSS) radio frames, define BSS color, as the mark of basic service set, the area for carrying out BSSNot.Only there are one BSS color by one BSS.In wireless LAN communication standard 802.11ax (hereinafter referred to as 11ax), BSSColor occupies 6 bits, can indicate 0-63, altogether 64 kinds of marks.Due to 11ax define be dense network application technology andAnd there are concealed terminals, access point (Access Point, AP) is when carrying out BSS color selections, it is likely that the BSS of selectionColor is identical with the BSS color that other AP are selected, as shown in Figure 1.First access point AP1 and the second access point AP2 are hidden each otherHide terminal.First access point AP1 and the second access point AP2 are when BSS is established, even if network sweep is carried out, due to mutualThe BSS color not selected in mutual communication range, the first access point AP1 and the second access point AP2 are likely to be identical,Under intensive scene, the problem is especially serious.
Invention content
In view of this, the present invention provides following scheme.
A kind of method for sending information, including：
Access point generates radio frames, and the radio frames include the first instruction parameter；The first instruction parameter is used for schoolAt the time of positive basic service set identification switching or it is used to indicate the wireless frame information for carrying effective handoff parameter；
Described access point sends the radio frames.
A kind of method of basic service set identification switching, including：
Website receives radio frames, and the radio frames include the first instruction parameter；
The website indicates parameter correction basic service set identification switching instant according to described first, or according to described theOne instruction parameter determines the radio frames for carrying effective handoff parameter.
A kind of information transmitting apparatus, including：
Framing module, for generating radio frames, the radio frames include the first instruction parameter；The first instruction parameterAt the time of for correcting basic service set identification switching or it is used to indicate and carries the wireless frame information of effective handoff parameter；
Sending module, for sending the radio frames.
A kind of access point, including above- mentioned information sending device.
A kind of device of basic service set identification switching, including：
Receiving module, for receiving radio frames, the radio frames include the first instruction parameter；
Processing module is used for according to the first instruction parameter correction basic service set identification switching instant, or according toThe first instruction parameter determines the radio frames for carrying effective handoff parameter.
A kind of website includes the device of above-mentioned basic service set identification switching.
A kind of system for basic service set identification switching, including：
Access point, including,
Framing module, for generating radio frames, the radio frames include the first instruction parameter；The first instruction parameterAt the time of for correcting basic service set identification switching or it is used to indicate and carries the wireless frame information of effective handoff parameter；
Sending module, for sending the radio frames；
Handover module, for indicating that parameter carries out basic service set identification switching according to described first；
Website, including,
Receiving module, for receiving the radio frames；
Processing module is used for according to the first instruction parameter correction basic service set identification switching instant, or according toThe first instruction parameter determines the radio frames for carrying effective handoff parameter.
A method of switch for basic service set identification, including：
Access point generates radio frames, and the radio frames include the first instruction parameter；The first instruction parameter is used for schoolAt the time of positive basic service set identification switching or it is used to indicate the wireless frame information for carrying effective handoff parameter；
Access point sends the radio frames；
Access point indicates that parameter carries out basic service set identification switching according to described first；
Website receives the radio frames；
Website indicates parameter correction basic service set identification switching instant according to described first, or refers to according to described firstShow that parameter determines the radio frames for carrying effective handoff parameter.
The embodiment of the present invention also provides a kind of computer readable storage medium, is stored with computer executable instructions, describedComputer executable instructions are performed the realization above method.
Said program generates radio frames by access point, and the radio frames include that instruction basic service set identification switchesFirst instruction parameter, access point or website indicate that parameter carries out basic service set identification switching according to described first, to logicalCross setting first instruction parameter, determine basic service set identification switching at the time of, realize to basic service set identification switch whenBetween controlled, and then realize basic service set identification switching, it is basic to solve diverse access point existing for the relevant technologiesThe identical problem of service set.The embodiment of the present invention is by setting the first instruction parameter to deviant, when first switchesAt the time of quarter plus deviant instruction, new basic service set identification is switched to；Or in the letter for carrying the first instruction parameterAt the time of the corresponding target beacon transmission time of mark frame adds deviant to indicate, new basic service set identification is switched to；Alternatively, instituteThe wireless frame information that the instruction of the first instruction parameter carries effective handoff parameter is stated, the wireless of effective handoff parameter is carried according to describedTarget beacon handoff parameter and/or deviant indicated by frame carry out basic service set identification switching, to realize not appositionIt is identical at the time of the basic service set identification switching of the radio frames instruction of formula, may exist certain error at the time of this switches,But this error does not influence system performance and transmission.It is basic even in the case of multi-beacon that the embodiment of the present invention solves double beaconsService set switching time inconsistent problem.Embodiment through the invention, it is possible to reduce website carries out space in this BSSThe maloperation of multiplexing ensures effective progress of transmission.
Description of the drawings
Fig. 1 is the situation that the first access point AP1 and BSS color of the second access point AP2 selections is identical in the related technologySchematic diagram；
Fig. 2 is that access point notifies website to carry out BSS after how many a TBTT within a beacon frame or by unicast frameThe schematic diagram of color switchings；
Fig. 3 is when using the sending method of double Beacon, and there are the BSS of a part of website in a period of time BSSSituation schematic diagrames different from the BSS color of another part website color；
Fig. 4 is flow chart of the embodiment of the present invention one for the method for sending information of basic service set identification switching；
Fig. 5 is the method flow diagram of the basic service set identification switching of the embodiment of the present invention two；
Fig. 6 is module map of the embodiment of the present invention three for the information transmitting apparatus of basic service set identification switching；
Fig. 7 is the structure drawing of device for basic service set identification switching of the embodiment of the present invention four；
Fig. 8 is the signal of application example 1 of the present invention BSS color switchings when access point supports dual beacon functionsFigure；
Fig. 9 is the signal of application example 2 of the present invention BSS color switchings when access point supports dual beacon functionsFigure；
Figure 10 is that deviant increases schematic diagram in application example 3 of the present invention；
Figure 11 is that second instruction parameter increases schematic diagram in application example 3 of the present invention；
Figure 12 is that basic parameter increases schematic diagram in application example 4 of the present invention；
Figure 13 is the schematic diagram that first instruction parameter (deviant) indicates switching in application example 5 of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present inventionEmbodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the applicationFeature mutually can arbitrarily combine.
In order to overcome the BSS color of the selection of diverse access point in the related technology identical situation caused by drawback, it is fixedThe rule of justice BSS color switchings.Access point AP notifies STA (website) at how many within a beacon frame or by unicast frameTarget beacon transmission time (target beacon transmission time, TBTT) carries out BSS Color switchings afterwards, such asShown in Fig. 2.
In addition, in order to increase coverage area, increase transmission reliability, defines double Beacon (dual beacon, double lettersMark) sending method, a kind of Beacon sends with the format of non-11ax, and a kind of format with 11ax is sent.
If the above-mentioned BSS color methods switched are applied in the sending method of double Beacon, there can be oneThe problem of branch website is switched to new BSS color, and another part website is not switched to new Color, as shown in Figure 3.First stopPoint STA1 switches according to the first beacon frame of non-11ax formats into row information, and the second website STA2 is according to the second of 11ax formats the letterIt marks frame into row information to switch, then will have a period of time (the first beacon frame Beacon-1 (Count1=0) to the second beaconFrame Beacon-2 (Count2=0)), a part of website uses old BSS color in BSS, and another part website uses newBSS color cause the spatial reuse in BSS, interfere current transmission.
Embodiment one：
It is the method for sending information flow chart of the embodiment of the present invention one with reference to shown in Fig. 4, the method for the present embodiment is applied toAccess point the described method comprises the following steps：
Step 401, access point generates radio frames, and the radio frames include the first instruction parameter；The first instruction ginsengNumber carries the wireless frame information of effective handoff parameter for correcting at the time of basic service set identification switches or being used to indicate；
Step 402, described access point sends the radio frames.
In the present embodiment, optionally, the first instruction parameter includes deviant；The basic service set identification switchingAt the time of for the first switching instant add deviant.
In the present embodiment, optionally, further include target beacon handoff parameter in the radio frames, the target beacon is cutIt is to need to continue to keep the target of old basic service set identification to believe before being switched to new basic service set identification to change parameterMark the number of transmission time.For example, when target beacon handoff parameter is set as 2, expression also needs to wait for 2 target beacon transmissionMoment (TBTT) could carry out the switching of BSS color.
Optionally, first switching instant is determined according to the target beacon handoff parameter or described first switchesMoment is the corresponding target beacon transmission time of beacon frame for carrying the first instruction parameter.First switching instant is ginsengThe value of benchmark, the deviant and reference data is examined, is determined by access point according to practical situation in concrete application.
In the present embodiment, optionally, first switching instant is determined according to the target beacon handoff parameter, packetIt includes：First switching instant is to carry the corresponding target beacon transmission time of beacon frame that target beacon handoff parameter is 0.WhenSo, only a kind of example herein, in practical applications, first switching instant, or other time points, this hairBright embodiment is not limited this.
In the present embodiment, optionally, the method further includes：Further include the second instruction parameter, institute in the radio framesIt states the second instruction parameter and is used to indicate the first instruction parameter and whether there is.
In the present embodiment, optionally, the radio frames include two or more format, and described two or twoKind or more indicate in radio frames basic service set identification switching at the time of it is identical.
In the present embodiment, optionally, the wireless frame information for carrying effective handoff parameter includes at least one of：Frame format, sequence number, bandwidth.
In the present embodiment, optionally, the radio frames include beacon frame either unicast radio frames or broadcast radio frame.
Embodiment two：
Referring to Figure 5, the method flow diagram switched for the basic service set identification of the embodiment of the present invention two, the present embodimentMethod be applied to website, the described method comprises the following steps：
Step 501, website receives radio frames, and the radio frames include the first instruction parameter；
Step 502, the website indicates parameter correction basic service set identification switching instant, Huo Zhegen according to described firstIndicate that parameter determines the radio frames of the effective handoff parameter of carrying according to described first.
In the present embodiment, optionally, the first instruction parameter includes deviant；The website is in the first switching instantIn addition carrying out basic service set identification switching at the time of deviant.
In the present embodiment, optionally, the method further includes：The website, which receives, carries the wireless of effective handoff parameterFrame, and basic service set identification switching instant is determined according to effective handoff parameter.
In the present embodiment, optionally,
Further include target beacon handoff parameter in the radio frames, the target beacon handoff parameter be be switched to it is newIt needs to continue to keep the number of the target beacon transmission time of old basic service set identification before basic service set identification.
In the present embodiment, optionally, first switching instant is determined according to the target beacon handoff parameter.OrPerson, optionally, first switching instant are when carrying described first to indicate that the corresponding target beacon of the beacon frame of parameter is transmittedIt carves.
In the present embodiment, optionally, first switching instant is determined according to the target beacon handoff parameter, packetIt includes：First switching instant is to carry the corresponding target beacon transmission time of beacon frame that target beacon handoff parameter is 0.
In the present embodiment, optionally,
Further include the second instruction parameter in the radio frames, the second instruction parameter, which is used to indicate the first instruction parameter, isNo presence.
In the present embodiment, optionally,
The radio frames include two or more format, and indicated in described two or two or more radio framesBasic service set identification is identical at the time of switching.
In the present embodiment, optionally,
The wireless frame information for carrying effective handoff parameter includes at least one of：Frame format, sequence number, bandIt is wide.
In the present embodiment, optionally, effective handoff parameter refers to determining basic service office collection mark with the parameterKnow switching instant, effective handoff parameter includes：Target beacon handoff parameter and/or deviant.
In the present embodiment, optionally,
The radio frames include beacon frame either unicast radio frames or broadcast radio frame.
Embodiment three：
Fig. 6 is the module map of the information transmitting apparatus of the embodiment of the present invention three, and in the present embodiment, described device is applied toIn access point, described device includes：
Framing module, for generating radio frames, the radio frames include the first instruction parameter；The first instruction parameterAt the time of for correcting basic service set identification switching or it is used to indicate and carries the wireless frame information of effective handoff parameter；
Sending module, for sending the radio frames.
In the present embodiment, optionally, the first instruction parameter that the radio frames that the framing module generates include includes inclinedShifting value；At the time of the basic service set identification switching deviant is added for the first switching instant.
In the present embodiment, optionally,
Further include target beacon handoff parameter in the radio frames that the framing module generates, the target beacon handoff parameterTo need to continue to keep the target beacon of old basic service set identification to transmit before being switched to new basic service set identificationThe number at moment.
In the present embodiment, optionally,
First switching instant is determined according to the target beacon handoff parameter, alternatively, optionally, described first switchesMoment is the corresponding target beacon transmission time of beacon frame for carrying the first instruction parameter.
In the present embodiment, optionally, first switching instant is determined according to the target beacon handoff parameter, packetIt includes：First switching instant is to carry the corresponding target beacon transmission time of beacon frame that target beacon handoff parameter is 0.
In the present embodiment, optionally, the radio frames that the framing module generates further include the second instruction parameter, and described theTwo instruction parameters are used to indicate the first instruction parameter and whether there is.
In the present embodiment, optionally,
The radio frames that the framing module generates include two or more format, and described two or two or moreIt is identical at the time of the basic service set identification switching indicated in radio frames.
In the present embodiment, optionally,
It includes at least one of that the radio frames that the framing module generates, which carry the wireless frame information of effective handoff parameter,：Frame format, sequence number, bandwidth.
In the present embodiment, optionally,
Effective handoff parameter includes：Target beacon handoff parameter and/or deviant.
In the present embodiment, optionally,
The radio frames that the framing module generates include beacon frame either unicast radio frames or broadcast radio frame.
In the present embodiment, a kind of access point, including information described above sending device are additionally provided, about access pointDescription details, with reference to the above-mentioned description to information transmitting apparatus.
Example IV：
It is the structure drawing of device that the basic service set identification of the embodiment of the present invention four switches, the present embodiment with reference to shown in Fig. 7Device be applied to website, described device includes：
Receiving module, for receiving radio frames, the radio frames include the first instruction parameter；
Processing module is used for according to the first instruction parameter correction basic service set identification switching instant, or according toThe first instruction parameter determines the radio frames for carrying effective handoff parameter.
In the present embodiment, optionally, the first instruction parameter that the radio frames that the receiving module receives include includes inclinedShifting value；The website carries out basic service set identification switching at the time of the first switching instant adds deviant.
In the present embodiment, optionally, the receiving module is additionally operable to receive the wireless of the effective handoff parameter of carryingFrame；The processing module is additionally operable to determine basic service set identification switching instant according to effective handoff parameter.
In the present embodiment, optionally,
Further include target beacon handoff parameter in the radio frames that the receiving module receives, the target beacon handoff parameterTo need to continue to keep the target beacon of old basic service set identification to transmit before being switched to new basic service set identificationThe number at moment.
In the present embodiment, optionally, first switching instant is determined according to the target beacon handoff parameter, orPerson, optionally, first switching instant are when carrying described first to indicate that the corresponding target beacon of the beacon frame of parameter is transmittedIt carves.
In the present embodiment, optionally, first switching instant is determined according to the target beacon handoff parameter, packetIt includes：First switching instant is to carry the corresponding target beacon transmission time of beacon frame that target beacon handoff parameter is 0.
In the present embodiment, optionally,
Further include the second instruction parameter in the radio frames that the receiving module receives, the second instruction parameter is used to indicateFirst instruction parameter whether there is.
In the present embodiment, optionally,
The radio frames that the receiving module receives include two or more format, and described two or two or moreIt is identical at the time of the basic service set identification switching indicated in radio frames.
In the present embodiment, optionally,
The wireless frame information that the radio frames instruction that the receiving module receives carries effective handoff parameter include it is following at leastOne of：Frame format, sequence number, bandwidth.
In the present embodiment, optionally,
Effective handoff parameter includes：Target beacon handoff parameter and/or deviant.
In the present embodiment, optionally,
The radio frames that the receiving module receives include beacon frame either unicast radio frames or broadcast radio frame.
In the present embodiment, a kind of website is additionally provided, the device of basic service set identification described above switching is included,The description details as described in website, with reference to the description of the above-mentioned device switched to basic service set identification.
The embodiment of the present invention additionally provides a kind of system for basic service set identification switching, including：
Access point, including,
Framing module, for generating radio frames, the radio frames include the first instruction parameter；The first instruction parameterAt the time of for correcting basic service set identification switching or it is used to indicate and carries the wireless frame information of effective handoff parameter；
Sending module, for sending the radio frames；
Handover module, for indicating that parameter carries out basic service set identification switching according to described first；
Website, including,
Receiving module, for receiving the radio frames；
Processing module is used for according to the first instruction parameter correction basic service set identification switching instant, or according toThe first instruction parameter determines the radio frames for carrying effective handoff parameter.
Optionally, the first instruction parameter that the radio frames that the framing module generates include includes deviant；It is described basicAt the time of service set switches deviant is added for the first switching instant.
Optionally, the receiving module is additionally operable to receive the radio frames for carrying effective handoff parameter；The processing mouldBlock is additionally operable to determine basic service set identification switching instant according to effective handoff parameter.
The embodiment of the present invention additionally provides a kind of method for basic service set identification switching, including：
Access point generates radio frames, and the radio frames include the first instruction parameter；The first instruction parameter is used for schoolAt the time of positive basic service set identification switching or it is used to indicate the wireless frame information for carrying effective handoff parameter；
Access point sends the radio frames；
Access point indicates that parameter carries out basic service set identification switching according to described first；
Website receives the radio frames；
Website indicates parameter correction basic service set identification switching instant according to described first, or refers to according to described firstShow that parameter determines the radio frames for carrying effective handoff parameter.
Optionally,
The first instruction parameter includes deviant；It is the first switching instant at the time of the basic service set identification switchingIn addition deviant.
Optionally, the method further includes：
The website receives the radio frames of the effective handoff parameter of carrying, and determines base according to effective handoff parameterThis service set switching instant.
Other of the above-mentioned system for being used for basic service set identification switching and the method for basic service set identification switchingAspect is referred to the embodiment of the present invention one to the detailed description of example IV, and details are not described herein.
Technical solution of the present invention is illustrated below by the example in concrete application.
Application example 1：
In a wireless local area network, access point AP is associated with two STA：First website (STA1) and the second website (STA2).AP supports dual beacon functions：Send the beacon of the beacon and the second format of the first format.In this application example,First format is non-11ax formats, and second format is 11ax formats.Certainly, can also include other in practical applicationThe beacon of format.
In this application example, the first website STA1 is according to the first beacon frame of the first format (non-11ax formats)(Beacon-1) parameter is operated, and the second website STA2 is according to the second beacon frame of the second format (11ax formats)(Beacon-2) parameter is operated.
AP has selected BSS color of some value as this BSS.In the life cycle of BSS, AP has found the BSS of oneselfColor is identical with the BSS color of other BSS, and there are more serious collisions.AP determines to carry out BSS color switchings.AP existsTarget beacon handoff parameter and the first instruction parameter (offset are indicated in the beacon of the beacon of 11ax formats and non-11ax formatsValue).Wherein, target beacon handoff parameter be used to indicate access point and website needed before being switched to new BSS color afterThe number of the TBTT of old BSS color is held in continuation of insurance.Deviant is used to indicate is equal to 0 relative to carrying target beacon handoff parameterThe corresponding TBTT of beacon frame shift time.Wherein, the corresponding TBTT of beacon frame that Target indication handoff parameter is equal to 0 is carriedIt is the first switching instant.AP in this way and website carry out being exactly that the first switching instant biasing is moved at the time of basic service set identification switchingAt the time of value is corresponding.
By the method for this application example, the Color of the beacon instructions of the beacon of 11ax formats and non-11ax formatsPoint is identical at the time of switching.As shown in figure 8, the second beacon frame (Beacon-2) and the first format of the second format (11ax formats)The beacon interval (Beacon interval, BI) that first beacon frame (Beacon-1) of (non-11ax formats) is sent is identical, AP hairsNow the BSS color of oneself are identical with the BSS color of other BSS, determine to carry out BSS color switchings.First beacon frameBeacon-1 notifies the target beacon handoff parameter and the first instruction parameter (deviant) of the first beacon frame Beacon-1；Second letterMark frame Beacon-2 notifies the target beacon handoff parameter and the first instruction parameter (deviant) of the second beacon frame Beacon-2.
Fig. 8 describes a special case, since the target beacon handoff parameter of the first beacon frame Beacon-1 is corresponding equal to 0TBTT is more early equal to 0 corresponding TBTT than the target beacon handoff parameter of the second beacon frame Beacon-2.Therefore, the first beacon frameThe deviant of Beacon-1 instructions is not 0, and the target beacon handoff parameter for being set as the second beacon frame Beacon-2 is equal to 0 correspondenceTBTT and the first beacon frame Beacon-1 target beacon handoff parameter be equal to 0 corresponding TBTT time difference.And the second letterThe deviant for marking frame Beacon-2 instructions is 0.The first beacon frame Beacon-1 is received in this way carries out the first of BSS color switchingsMoment point is identical with second beacon frame Beacon-2 progress the second moment point of BSS color switchings is received.It should be noted thatPoint is identical at the time of the switching, due to clock accuracy, receives time delay, the influence of the factors such as processing delay is likely to result in oneFixed deviation.Switching at the time of point described in the embodiment of the present invention is identical, refers between first moment point and the second moment pointThere may be the time differences in allowable range.
Here, the deviant that the first beacon frame Beacon-1 and the second beacon frame Beacon-2 are indicated respectively can not be0.What Count1 and Count2 was indicated here is target beacon handoff parameter.Count1=2 in Fig. 8, i.e. target beacon switchParameter indicates the switching for also needing to wait for 2 TBTT that could carry out BSS color.
STA1 can not continue to intercept subsequent first letter after hearing the first beacon frame Beacon-1 of Count1=2Frame is marked, at the time of obtaining BSS color switchings according to the target beacon handoff parameter of the first beacon frame Beacon-1 and deviant.Preparation method is：The corresponding TBTT+ target beacons handoff parameter * BI+ deviants of current first beacon frame Beacon-1.Wherein,BI is Beacon Interval (beacon interval).
Application example 2：
In a wireless local area network, access point AP is associated with two STA：First website (STA1) and the second website (STA2).AP supports dual beacon functions：Send the beacon of the beacon and non-11ax formats of 11ax formats.STA1 is according to non-11axThe parameter of the first beacon frame (Beacon-1) of format is operated, and STA2 is according to the second beacon frame (Beacon- of 11ax formats2) parameter is operated.AP has selected BSS color of some value as this BSS.In the life cycle of BSS, AP has foundThe BSS color of oneself are identical with the BSS color of other BSS, and there are more serious collisions.AP determines to carry out BSSColor switches.AP indicates target beacon handoff parameter and in the beacon of 11ax formats and the beacon of non-11ax formatsOne instruction parameter (deviant).Wherein, target beacon handoff parameter is used to indicate access point and website and is being switched to new BSSIt needs to continue to keep the number of the TBTT of old BSS color before color.Deviant is used to indicate relative to carrying target letterMark the shift time of beacon frame corresponding TBTT of the handoff parameter equal to 0.Wherein, it carries Target indication handoff parameter and is equal to 0The corresponding TBTT of beacon frame is the first switching instant.AP in this way and website carry out being exactly the at the time of basic service set identification switchingAt the time of one switching instant adds deviant to correspond to.
The Color of the beacon instructions of method through this embodiment, the beacon of 11ax formats and non-11ax formats is cutPoint is identical at the time of changing.As shown in figure 9, the beacon (the second beacon frame, Beacon-2) and non-11ax formats of 11ax formatsThe Beacon Interval that beacon (the first beacon frame, Beacon-1) is sent are differed.AP has found the BSS Color of oneselfIt is identical with the BSS Color of other BSS, it determines to carry out BSS Color switchings.Beacon-1 notifies the target beacon of Beacon-1Handoff parameter and deviant；Beacon-2 notifies the target beacon handoff parameter and deviant of Beacon-2.Fig. 9 describes oneThe deviant of special case, Beacon-1 instructions is 0, and the deviant of Beacon-2 instructions is not 0.Beacon-1 progress is received in this wayBSS color switching at the time of points are identical with Beacon-2 progress BSS color switching at the time of points are received.
Here, the deviant that the first beacon frame Beacon-1 and the second beacon frame Beacon-2 are indicated respectively can not be0.What Count1 and Count2 was indicated here is target beacon handoff parameter.Count1=2 in Fig. 8, i.e. target beacon switchParameter indicates the switching for also needing to wait for 2 TBTT that could carry out BSS color.
STA1 can not continue to intercept subsequent beacon frame after hearing the first beacon frame Beacon-1 of Count1=2,According to the target beacon handoff parameter of the first beacon frame Beacon-1 and deviant come at the time of acquiring BSS color switchings.Preparation method is：The corresponding TBTT+ target beacons handoff parameter * BI+ deviants of Beacon-1 of current Count1=2.
There may be deviations, such as Beacon-1 pairs of current Count1=2 in practical applications for above-mentioned preparation methodThe TBTT answered may not capture the TBTT times when calculating, above-mentioned TBTT is replaced at the time of reception with current Beacon-1.Make that there may be deviations for the result finally calculated in this way, but belongs to admissible range.
Application example 3：
In a wireless local area network, access point AP supports dual beacon functions：Send the beacon of 11ax formats and non-The beacon of 11ax formats.In the life cycle of BSS, AP has found the BSS color of the BSS color and other BSS of oneselfIdentical, there are more serious collisions.AP determines to carry out BSS color switchings.AP passes through unicast radio frames or broadcast radio frameNotify the parameter of website BSS Color switchings.AP notifies the ginseng of BSS color switchings by unicast radio frames or broadcast radio frameThe format that number uses is as shown in Figure 10.Wherein, the corresponding target letters of Color Switch Countdown (color switching countdown)Mark handoff parameter, Color Switch Offset (color switching offset) corresponding first instruction parameter (deviant).ColorThe length in the domains Switch Offset can specifically consider according to the difference of unit.If the unit in this domain is 1 microsecond (us),Then in order to the time long enough of instruction, the bit number needed just compares more.If using 2 bytes, with 8 microseconds or16us is that unit is a suitable value.The length and unit in the domains Color Switch Offset can be other values.ThisOutside, in order to reduce expense, Color can be first indicated using some bits before the domains Color Switch OffsetThe domains Switch Offset whether there is, this instruction is the second instruction parameter.Figure 11 is to use New BSS Color1 bit in Information (new BSS Color information) domain indicates that the domains Color Switch Offset whether there is.IfThe domains instruction Color Switch Offset are not present, then the value of the domains implicit indication Color Switch Offset instruction is 0.
Application example 4：
In a wireless local area network, access point AP is associated with two STA：First website (STA1) and the second website (STA2).AP supports dual beacon functions：Send the beacon of the beacon and non-11ax formats of 11ax formats.STA1 can be receivedThe beacon of the beacon of 11ax formats and non-11ax formats.STA2 can only receive the beacon of 11ax formats.Cause above-mentioned feelingsThe reason of condition may be since STA1 distances AP is closer, and STA2 distances AP is farther out.
AP has selected BSS color of some value as this BSS.In the life cycle of BSS, AP has found the BSS of oneselfColor is identical with the BSS color of other BSS, and there are more serious collision, AP determines to carry out BSS color switchings.AP existsIndicate that target beacon handoff parameter and the first instruction parameter (are used in the beacon of the beacon of 11ax formats and non-11ax formatsIndicate the radio frames of the effective handoff parameter of carrying).Wherein, target beacon handoff parameter is used to indicate access point and website and is switchingTo the number for needing to continue to keep the TBTT of old BSS color before new BSS color.First instruction parameter is used to indicateThe target beacon handoff parameter of non-11ax formats beacon of being subject to still is subject to 11ax format Beacon frames.
Such as in this scene, since STA2 can only receive the Beacon of 11ax formats, and STA1 can receive 11ax latticeThe Beacon of the Beacon of formula and non-11ax formats.Therefore, can be in the Beacon of non-11ax formats, the first instruction parameter refers toShow the parameter being subject in the Beacon of 11ax formats.In the Beacon of 11ax formats, the first instruction parameter instruction is with 11axSubject to parameter in the Beacon of format.
STA1 can only receive one type Beacon, such as the Beacon of non-11ax formats, in non-11ax formatsIn Beacon, it is found that the Beacon of 11ax formats is subject in the first instruction parameter instruction, in this way, STA1 can go to receive 11ax againThe Beacon of format.In this way, for STA1, can not only save power, but can with can only receive 11ax formats BeaconSTA2 parameter switching at the time of points be consistent.
In addition, there is also a kind of special case, i.e. AP only sends the Beacon of non-11ax formats.In the feelings of BSS color switchingsUnder condition, the first instruction parameter is designated as being subject to the Beacon of non-11ax formats.
Figure 12 is to indicate the first instruction parameter using the basic parameter domain in the domains New BSS Color Information.Here illustrated example, basic parameter indicated using 1 bit, if setting 1 expression is subject to the Beacon of 11ax formats, sets to 0 expressionIt is subject to the Beacon of non-11ax formats.
Application example 5：
In a wireless local area network, access point AP is associated with two STA：First website (STA1) and the second website (STA2).AP supports dual beacon functions：Send the beacon of the beacon and non-11ax formats of 11ax formats.STA1 can be receivedThe beacon of the beacon of 11ax formats and non-11ax formats.STA2 can only receive the beacon of 11ax formats.Cause above-mentioned feelingsThe reason of condition may be since STA1 distances AP is closer, and STA2 distances AP is farther out.
AP has selected BSS color of some value as this BSS.In the life cycle of BSS, AP has found the BSS of oneselfColor is identical with the BSS color of other BSS, and there are more serious collision, AP determines to carry out BSS color switchings.AP existsThe first instruction parameter (deviant) of instruction in the beacon of the beacon of 11ax formats and non-11ax formats.11ax formatsThe calculated switching BSS color at the time ofs point of deviant indicated in the beacon of beacon and non-11ax formats is answered identical.
The first instruction parameter (offset that AP is indicated in sending the beacon of beacon or non-11ax formats of 11ax formatsValue) it needs to ensure regardless of that all should be same according to the calculated basic service set switching instants of beacon of which kind of format.
STA1 calculates switching BSS color's according to the parameter of the beacon of the beacon or non-11ax formats of 11ax formatsMoment point：The current corresponding TBTT+ deviants of beacon frames for carrying deviant.
STA2 calculates switching BSS color at the time of points according to the parameter of the beacon of 11ax formats：It is current to carry offsetThe corresponding TBTT+ deviants of beacon frames of value.
It is identical that STA1 and STA2 calculates at the time of point.Website is in synchronization point switching BSS color in this way.
As shown in figure 13, Figure 13 only describes a Beacon in the Beacon of 11ax formats and non-11ax formatsThe schematic diagram for the first instruction parameter (deviant) that a Beacon in Beacon is carried respectively.AP is in other 11ax formatsDeviant is carried in Beacon and also in the Beacon of non-11ax formats, these deviants are possibly different from, and AP needs to ensureThe basic service set switching instant that the deviant carried in all beacon is calculated is consistent.
In addition, the embodiment of the present application also provides a kind of computer readable storage medium, computer executable instructions are stored with,The computer executable instructions are performed the method for realizing the embodiment of the present invention：
Above computer readable storage medium storing program for executing, including some instructions are used so that a computer installation (can be personalComputer, server or network equipment etc.) or each embodiment the method for processor (Processor) the execution present inventionPart steps.And the computer readable storage medium includes：USB flash disk, mobile hard disk, read-only memory (ReadOnlyMemory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. are various to depositStore up the medium of program code.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.Pass through above embodiment partyThe description of formula, it is required general that those skilled in the art can be understood that above-described embodiment method can add by softwareThe mode of hardware platform is realized, naturally it is also possible to which by hardware, but the former is more preferably embodiment in many cases.It is based onSuch understanding, the part that the technical solution of the embodiment of the present invention substantially in other words contributes to the relevant technologies can be with softThe form of part product embodies, which is stored in a storage medium (such as ROM/RAM, magnetic disc, CD)In, including some instructions use is so that a station terminal equipment (can be mobile phone, computer, server or the network equipment etc.)Execute the method described in each embodiment of the present invention.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this fieldFor art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repairChange, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.