CN105744638A

CN105744638A - Scheduling method and system, access point and station

Info

Publication number: CN105744638A
Application number: CN201610190316.0A
Authority: CN
Inventors: 伍天宇; 陈晨; 朱丽娜; 杨锦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-02-24
Filing date: 2012-02-24
Publication date: 2016-07-06
Anticipated expiration: 2032-02-24
Also published as: CN105744638B

Abstract

The invention provides a scheduling method and system, an access point and a station, and relates to the field of communication. The method comprises that the stations monitor beacon frames, wherein the beacon frames comprise scheduling information of a current beacon period, wherein the scheduling information is used for indicating a time period allocated to each group of stations in the current beacon period, wherein the time period is used for transmitting data; when the data needs to be transmitted, the data is transmitted in the time period of the group in which the stations are located according to the indication of the scheduling information of the current beacon period. According to the method, the system, the access point and the station, the utilization rates of the time periods are improved; the time resources are saved; and the transmission efficiency is improved.

Description

A kind of dispatching method and system and access point and website

Technical field

The present invention relates to communication technical field, particularly to a kind of dispatching method and system and access point and website.

Background technology

Along with the development of communication technology, radio network technique is proposed new requirement by people, namely two-forty, extensive, high-throughput.In WLAN, the quantity of user STA (website) also gets more and more, and the competition that website accesses AP (AccessPoint, access point) is also fiercer with regard to what become.

Owing to the problems such as collision can be produced based on the cut-in method of competition, current a kind of dispatching method, one frame is mainly divided into some periods by this dispatching method, each period is distributed to a website and uses, if website needs transmission data, then this website accesses channel in its corresponding period, and transmits data.

Existing dispatching method is that each website distributes a period use, but is not that each website has data to need transmission, thus resource of losing time, affects efficiency of transmission.

Summary of the invention

In order to save time resource, improve efficiency of transmission, embodiments provide a kind of dispatching method and access point and website.Described technical scheme is as follows:

A kind of dispatching method, described method includes:

Website intercepts the first beacon frame, and described first beacon frame comprises DTIM (DeliveryTrafficIndicationMessage delivers transmission instruction information) information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with；

Described website determines the beacon period distributed in current dispatching cycle for described website according to the DTIM information that described first beacon frame comprises；

In the beacon period distributed for described website, described website intercepts the second beacon frame, described second beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website；

When needs transmit data, the instruction according to the described schedule information of current beacon cycle of the described website, in the period transmission data that described website place group is assigned with.

A kind of dispatching method, described method includes:

Access point sends the first beacon frame in the period 1, described first beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with, the DTIM information that website comprises according to described first beacon frame is made to determine the beacon period that in current dispatching cycle, described website is assigned with；

Described access point sends the second beacon frame in second round, described second beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website, make the website the needing transmission data instruction according to the described schedule information of current beacon cycle, in the period transmission data that the described website place group needing transmission data is assigned with.

A kind of dispatching method, described method includes:

Website intercepts the 3rd beacon frame, and described 3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with；

Described website determines the beacon period distributed in current dispatching cycle for described website according to the DTIM information that described 3rd beacon frame comprises；

In the beacon period distributed for described website, described website intercepts the 4th beacon frame, described 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, has at least a period distribution at least two website；

When needs transmit data, the instruction according to the described schedule information of current beacon cycle of the described website, in the period transmission data that described website is assigned with.

A kind of dispatching method, described method includes:

Access point sends the 3rd beacon frame in the period 1, described 3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with, the DTIM information that website comprises according to described 3rd beacon frame is made to determine the beacon period that in current dispatching cycle, described website is assigned with；

Described access point sends the 4th beacon frame in second round, described 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, has at least a period distribution at least two website, make the website the needing transmission data instruction according to the described schedule information of current beacon cycle, in the period transmission data that the described website needing transmission data is assigned with.

A kind of website, described website includes:

Intercepting module, be used for intercepting the first beacon frame, described first beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with；

Determining module, the DTIM information for comprising according to described first beacon frame determines the beacon period in current dispatching cycle for the distribution of described website；

Described intercept module, it is additionally operable in the beacon period distributed for described website, intercept the second beacon frame, described second beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website；

Transport module, for when needs transmit data, the instruction according to the described schedule information of current beacon cycle, in the period transmission data that described website place group is assigned with.

A kind of access point, described access point includes:

First sending module, for sending the first beacon frame in the period 1, described first beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with, the DTIM information that website comprises according to described first beacon frame is made to determine the beacon period that in current dispatching cycle, described website is assigned with；

Second sending module, for sending the second beacon frame in second round, described second beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website, make the website the needing transmission data instruction according to the described schedule information of current beacon cycle, in the period transmission data that the described website place group needing transmission data is assigned with.

A kind of website, described website includes:

Intercepting module, be used for intercepting the 3rd beacon frame, described 3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with；

Determining module, the DTIM information for comprising according to described 3rd beacon frame determines the beacon period in current dispatching cycle for the distribution of described website；

Described intercept module, it is additionally operable in the beacon period distributed for described website, intercept the 4th beacon frame, described 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, has at least a period distribution at least two website；

Transport module, for when needs transmit data, the instruction according to the described schedule information of current beacon cycle, in the period transmission data that described website is assigned with.

A kind of access point, described access point includes:

First sending module, for sending the 3rd beacon frame in the period 1, described 3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with, the DTIM information that website comprises according to described 3rd beacon frame is made to determine the beacon period that in current dispatching cycle, described website is assigned with；

Second sending module, for sending the 4th beacon frame in second round, described 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, have at least a period distribution at least two website, make the website the needing transmission data instruction according to the described schedule information of current beacon cycle, in the period transmission data that the described website needing transmission data is assigned with.

A kind of dispatching patcher, described system includes: access point and website；

Described access point includes:

First sending module, for sending the first beacon frame in the period 1, described first beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with；

Second sending module, for sending the second beacon frame in second round, described second beacon frame comprises the schedule information of current beacon cycle, and for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website；

Described website includes:

Intercept module, be used for intercepting the first beacon frame；

Described intercept module, be additionally operable to, in the beacon period distributed for described website, intercept the second beacon frame；

Described access point includes:

First sending module, for sending the 3rd beacon frame in the period 1, described 3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with；

Second sending module, for sending the 4th beacon frame in second round, described 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, has at least a period distribution at least two website；

Described website includes:

Intercept module, be used for intercepting the 3rd beacon frame；

Described intercept module, be additionally operable to, in the beacon period distributed for described website, intercept the 4th beacon frame；

A kind of dispatching method, described method includes:

Website intercepts beacon frame, and described beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in described current beacon cycle to be allocated for the period of transmission data；

When needs transmit data, the instruction according to the described schedule information of current beacon cycle of the described website, the mode competed or the sub-period specified transmission data are adopted in the period that described website place group is assigned with.

A kind of dispatching method, described method includes:

Access point sends beacon frame, described beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in described current beacon cycle to be allocated for the period of transmission data, make the website the needing transmission data instruction according to the described schedule information of described current beacon cycle, adopt the mode competed or the sub-period specified transmission data in the period that the described website place group needing transmission data is assigned with.

A kind of dispatching method, described method includes:

Website intercepts beacon frame, and described beacon frame comprises the schedule information of current beacon cycle, and for indicating each website in described current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website；

When needs transmit data, the instruction according to the described schedule information of described current beacon cycle of the described website, the mode competed or the sub-period specified transmission data are adopted in the period that described website is assigned with.

A kind of dispatching method, described method includes:

Access point sends beacon frame, described beacon frame comprises the schedule information of current beacon cycle, for indicating each website in described current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, make the website the needing transmission data instruction according to the described schedule information of described current beacon cycle, adopt the mode competed or the sub-period specified transmission data in the period that the described website needing transmission data is assigned with.

A kind of website, described website includes:

Intercepting module, be used for intercepting beacon frame, described beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in described current beacon cycle to be allocated for the period of transmission data；

Transport module, is used for when needs transmit data, the instruction according to the described schedule information of current beacon cycle, adopts the mode competed or the sub-period specified transmission data in the period that described website place group is assigned with.

A kind of access point, described access point includes:

Sending module, for sending beacon frame, described beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in described current beacon cycle to be allocated for the period of transmission data, make the website the needing transmission data instruction according to the described schedule information of described current beacon cycle, adopt the mode competed or the sub-period specified transmission data in the period that the described website place group needing transmission data is assigned with.

A kind of website, described website includes:

Intercepting module, be used for intercepting beacon frame, described beacon frame comprises the schedule information of current beacon cycle, and for indicating each website in described current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website；

Transport module, is used for when needs transmit data, the instruction according to the described schedule information of described current beacon cycle, adopts the mode competed or the sub-period specified transmission data in the period that described website is assigned with.

A kind of access point, described access point includes:

Sending module, for sending beacon frame, described beacon frame comprises the schedule information of current beacon cycle, for indicating each website in described current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, make the website the needing transmission data instruction according to the described schedule information of described current beacon cycle, adopt the mode competed or the sub-period specified transmission data in the period that the described website needing transmission data is assigned with.

Described access point includes:

Sending module, for sending beacon frame, described beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in described current beacon cycle to be allocated for the period of transmission data, make the website the needing transmission data instruction according to the described schedule information of described current beacon cycle, adopt the mode competed or the sub-period specified transmission data in the period that the described website place group needing transmission data is assigned with；

Described website includes:

Intercept module, be used for intercepting described beacon frame；

Transport module, is used for when needs transmit data, the instruction according to the described schedule information of described current beacon cycle, adopts the mode competed or the sub-period specified transmission data in the period that described website place group is assigned with.

Described access point includes:

Sending module, for sending beacon frame, described beacon frame comprises the schedule information of current beacon cycle, for indicating each website in described current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, make the website the needing transmission data instruction according to the described schedule information of described current beacon cycle, adopt the mode competed or the sub-period specified transmission data in the period that the described website place group needing transmission data is assigned with；

Described website includes:

Intercept module, be used for intercepting described beacon frame；

The technical scheme that the embodiment of the present invention provides provides the benefit that:

Carry out data transmission by least one period is distributed to multiple website, carry out data transmission relative to a period is distributed to a website, improve the utilization rate of period, save time resource, improve efficiency of transmission.

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1-a is the dispatching method flow chart that the embodiment of the present invention 1 provides；

Fig. 1-b is another flow chart of dispatching method that the embodiment of the present invention 1 provides；

Fig. 2 is the dispatching method flow chart that the embodiment of the present invention 2 provides；

Fig. 3 is schematic diagram dispatching cycle that the embodiment of the present invention 2 provides；

Fig. 4 is the amended mac frame head schematic diagram that the embodiment of the present invention 2 provides；

Fig. 5 is the amended MAC data frame head schematic diagram that the embodiment of the present invention 2 provides；

Fig. 6 is the beacon period schematic diagram that the embodiment of the present invention 2 provides；

Fig. 7 is the competition schematic diagram that the embodiment of the present invention 2 provides；

Fig. 8 is the first release information schematic diagram that the embodiment of the present invention 2 provides；

Fig. 9 is the second release information schematic diagram that the embodiment of the present invention 2 provides；

Figure 10 be the embodiment of the present invention 2 provide rearrange the distribution time after the period schematic diagram that is assigned with of each group website；

Figure 11-a is the dispatching method flow chart that the embodiment of the present invention 3 provides；

Figure 11-b is another flow chart of dispatching method that the embodiment of the present invention 3 provides；

Figure 12 is the dispatching method flow chart that the embodiment of the present invention 4 provides；

Figure 13 is the site structure schematic diagram that the embodiment of the present invention 5 provides；

Figure 14 is the access point structures schematic diagram that the embodiment of the present invention 6 provides；

Figure 15 is the site structure schematic diagram that the embodiment of the present invention 7 provides；

Figure 16 is the access point structures schematic diagram that the embodiment of the present invention 8 provides；

Figure 17 is the dispatching patcher structural representation that the embodiment of the present invention 9 provides；

Figure 18 is the dispatching patcher structural representation that the embodiment of the present invention 10 provides.

Detailed description of the invention

For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.The embodiment of the present invention is quoted in WLAN (WirelessLocalAreaNetworks, WLAN), is carried out the explanation of example with the communication between access point AP and user site STA.

Embodiment 1

Referring to Fig. 1-a, present embodiments providing a kind of dispatching method, can be used for the AP scheduling to STA in WLAN, the method includes:

S11: website intercepts the first beacon frame, the first beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with.

Enforcement can wake up at the delivery time of the first beacon frame by website.

S12: website determines the beacon period distributed in current dispatching cycle for website according to the DTIM information that the first beacon frame comprises；

S13: in the beacon period distributed for website, website intercepts the second beacon frame, second beacon frame comprises the schedule information of current beacon cycle, and for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website；

S14: when needs transmit data, the website instruction according to the schedule information of current beacon cycle, in the period transmission data that website place group is assigned with.

Referring to Fig. 1-b, present embodiments providing a kind of dispatching method, the method includes:

S21: access point sends the first beacon frame in the period 1, first beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with, the DTIM information that website comprises according to the first beacon frame is made to determine the beacon period that in current dispatching cycle, website is assigned with；

S22: access point sends the second beacon frame in second round, second beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website, make the website the needing transmission data instruction according to the schedule information of current beacon cycle, in the period transmission data needing the website place group of transmission data to be assigned with.

The present embodiment carries out data transmission by least one period is distributed to multiple website, carries out data transmission relative to a period is distributed to a website, improves the utilization rate of period, saves time resource, improves efficiency of transmission.

Embodiment 2

Referring to Fig. 2, present embodiments providing a kind of dispatching method, in the method, each period distributes to a group, and has at least a group to include at least two website, and the method includes:

201:AP (AccessPoint, access point) send beacon (beacon) frame according to the default period 1, oneth beacon frame comprises DTIM (DeliveryTrafficIndicationMessage, deliver transmission instruction information) information, for indicating the beacon cycle that in current dispatching cycle, each group website is assigned to；

Wherein, a dispatching cycle comprises multiple beacon cycle, can dispatch once for each group, and only dispatch once within a dispatching cycle.Dispatching cycle, schematic diagram was shown in Figure 3.

It should be noted that the scheduling that AP can report according to each website is according to information, such as QoS (QualityofService, service quality) information, each website is divided into different groups.Each website can report QoS information based on amended mac frame head (such as Fig. 4) or based on the qos field in amended MAC data frame head (such as Fig. 5).Each field name or implication are as follows:

FrameControl: frame controls

Duration: duration, represents that node is by the time of busy channel

QoS:qualityofservice, service quality

RA:receiveaddress, receives address

TA:transmitaddress, sends address

FCS:framechecksequence, whether Frame Check Sequence, for checking the frame received correct

ProtocolVersion: protocol version

Type: type, with the function of " Subtype " this frame of common ID

Subtype: subtype, with the function of " Type " this frame of common ID

ToDS:todistributionsystem, to distribution system

FromDS:fromdistributionsystem, from distribution system

MoreFrag:morefragment, more bursts, represent current MSDU (MACServiceDataUnit, Medium access control Service data cell)/MMPDU (MACManagementProtocolDataUnit, medium education management agreement data cell) whether also other burst

Retry: retry, in order to identify whether this frame is the frame retransmitted

PwrMgt:powermanagement, power management, for identifying the power managed modes of this node

MoreData: more data, AP use whether this bit-identify AP is also cached with the data of this website

ProtectedFrame: protection frame, is used for whether identifying frame main body by " cryptographicencapsulation (encryption encapsulation) " algorithm process mistake

Order: sequentially

A1:address1, the reception address of frame

A2:address2, the transmission address of frame

A3:address3, the destination address of frame

Seq:sequence, the serial number of mark MSDU/MMPDU

A4:address4, address 4, retain

HT:High-throughput, maximum flow, whether identify the speed of this node support be more than or equal to 100Mb/s

202: all websites wake up at the delivery time of a beacon frame, intercept a beacon frame, determine, according to the DTIM information that a beacon frame comprises, the beacon cycle self being assigned with in current dispatching cycle；

203:AP sends the 2nd beacon frame according to default second round, 2nd beacon frame comprises the schedule information in current beacon cycle, for indicating each group website in the current beacon cycle to be allocated for the period of transmission data, it is also possible to indicate in the current beacon cycle time started of competition period further；

Wherein, a beacon cycle includes a fixed length period, and the fixed length period (is set to SP) and is divided at least two period (being set to GP), and each period distributes to a group, and has at least a group to include at least two website.Further, after the fixed length period, a beacon cycle can also include competition period (being set to CP, ContentPeriod), and the website having time delay sensitive traffic can at competition period competitive channel.Beacon cycle schematic diagram is shown in Figure 6.

It should be noted that, the quantity of the period being assigned with for each group of website can according to the website quantity set in often group, when website sum is certain, in group, website quantity is more many, the quantity of the period that each group website is assigned with is more few, otherwise, in group, website quantity is more few, and the quantity of the period that each group website is assigned with is more many.

It should be noted that respectively the length of the period that group website is assigned with can be set according to the quantity and history service situation organizing interior website, for instance, the period of the group correspondence that in group, website quantity is many, portfolio is big is more long.

204: each website, at the beacon periodic awakening self being assigned with, intercepts the 2nd beacon frame, when needs transmit data, in the period transmission data that this website place group is assigned with；

Wherein, the period transmission data that website is assigned with in this website place group, specifically there is two ways:

First kind of way is, website adopts the mode of competition, in the period transmission data that this website place group is assigned with.The mode of competition can adopt RTS/CTS (RequestToSend/ClearToSend, request to send/allowed to send) handshake mechanism to be at war with.Concrete, each website uses RTS frame competitive channel, once a certain website is successfully transmitted RTS frame, and have received the CTS frame of AP response, then this website sends the Frame of oneself at once, and in group, other websites can listen to the Frame that this website sends.

The second way is, the sub-period of the period transmission data that AP specified sites is assigned with in this website place group, and website transmits data according to the AP sub-period specified.

205: if schedule information further indicates the time started of competition period, the website having time delay sensitive traffic that the beacon cycle is respectively organized in website accordingly can compete period competitive channel；

The period is competed for there being the station transmission data of time delay sensitive traffic, it is possible in scheduling process, well take into account the efficiency of transmission of delay sensitive business beacon Period Reservation one.Competition schematic diagram is shown in Figure 7, concrete,

The website having time delay sensitive traffic that the 2051:beacon cycle is respectively organized in website accordingly sends frame competitive channel in the competition period；

Specifically can there be two kinds of channel competition methods:

The first is, for the scene of small data business, each website directly uses Frame to carry out competitive channel to reduce expense.

The second is, RTS/CTS mechanism is used to carry out competitive channel, concrete, each website uses RTS frame competitive channel, once a certain website is successfully transmitted RTS frame, and have received the CTS frame of AP response, then this website sends the Frame of oneself at once, and in group, other websites can listen to the Frame that this website sends.

2052: when a site channel is competed successfully, AP replys and confirms that message (ACK) is to this website, uses notify to compete the website having time delay sensitive traffic that the period gives in this website place group, starts simultaneously at timing；

2053: other websites of this website place group determine that this group site channel is competed successfully, in the first duration, the website having time delay sensitive traffic in competition successfully this group website can competitive channel；

2054: when arriving the first duration, AP sends one first release (release) information, release competition period remaining period；

Wherein, the first release information schematic diagram is as shown in Figure 8.

After the 2055:beacon cycle, respectively the website having time delay sensitive traffic organized in website received the first release information accordingly, return step 2051, continue to start the competition competition period remaining period.

On the basis of above-mentioned scheduling process, in order to avoid long free time occurs in channel, saving time resource further, improve efficiency of transmission, optionally, the dispatching method that the present embodiment provides can also rearrange the distribution time, specifically includes:

AP detects the free time of the second duration occur distributing to channel in the period of each group, AP issues the second release information and actively discharges the remaining time of this group corresponding period, second release information comprises the period that the AP each group website rearranged is assigned with, the period that each website is assigned with according to the AP each group website rearranged, in the period transmission data that this website place group is assigned with, make when idle period occurs in one group of website, the scheduling of other groups can shift to an earlier date, thus avoiding channel long free time occur.

Wherein, the second release information schematic diagram is as shown in Figure 9.Wherein, the title of each field or implication are as follows:

SSID: service set identifier

Rescheduletable: dispatch list

GID:groupidentify, group mark

Duration: the duration of group, namely the period that group is assigned with

CRC: cyclic check code

Wherein, the period schematic diagram that after rearranging the distribution time (namely readjustment degree), each group website is assigned with is as shown in Figure 10.It should be noted that after rearranging the distribution time, if the beacon cycle also has remaining time, it is possible to for there being the station transmission data of time delay sensitive traffic, detailed process is referring to step 205.

The present embodiment carries out data transmission by a period is distributed to the website of a group, and have at least a group website to include at least two website, carry out data transmission relative to a period is distributed to a website, improve the utilization rate of period, save time resource, improve efficiency of transmission.It addition, by competing the period for there being the station transmission data of time delay sensitive traffic beacon Period Reservation one, it is possible in scheduling process, well take into account the efficiency of transmission of delay sensitive business.Additionally, by detecting that the free time of preset duration occurs in channel within the period distributing to each group of website, the second release information that issues actively discharges the remaining time of this group corresponding period, and rearrange the period that each group of website is assigned with, can avoid channel that long free time occurs, save time resource further, improve efficiency of transmission.

Embodiment 3

Referring to Figure 11-a, present embodiments providing a kind of dispatching method, can be used for the AP scheduling to STA in WLAN, the method includes:

S31: website intercepts the 3rd beacon frame, the 3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with；

S32: website determines the beacon period distributed in current dispatching cycle for website according to the DTIM information that the 3rd beacon frame comprises；

S33: in the beacon period distributed for website, website intercepts the 4th beacon frame, 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, has at least a period distribution at least two website；

S34: when needs transmit data, the website instruction according to the schedule information of current beacon cycle, in the period transmission data that website is assigned with.

Referring to Figure 11-b, present embodiments providing a kind of dispatching method, the method includes:

S41: access point sends the 3rd beacon frame in the period 1,3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with, the DTIM information that website comprises according to the 3rd beacon frame is made to determine the beacon period that in current dispatching cycle, website is assigned with；

S42: access point sends the 4th beacon frame in second round, 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, has at least a period distribution at least two website, make the website the needing transmission data instruction according to the schedule information of current beacon cycle, in the period transmission data needing the website of transmission data to be assigned with.

Embodiment 4

Referring to Figure 12, present embodiments providing a kind of dispatching method, in the method, each period distributes at least one website, and has at least a period distribution at least two website, and the method includes:

301:AP sends the 3rd beacon frame according to the default period 1, and the 3rd beacon frame comprises DTIM information, for indicating the beacon cycle that in current dispatching cycle, each website is assigned to；

Wherein, a dispatching cycle comprises multiple beacon cycle, and each website can distribute a period within a dispatching cycle.

302: all websites wake up at the delivery time of the 3rd beacon frame, intercept the 3rd beacon frame, determine, according to the DTIM information that the 3rd beacon frame comprises, the beacon cycle self being assigned with in current dispatching cycle；

The second round that 303:AP presets sends the 4th beacon frame, 4th beacon frame comprises the schedule information in current beacon cycle, for indicating the period that in the current beacon cycle, each website is assigned with, each period at least distributes a website, and have at least a period distribution at least two website, it is also possible to indicate in the current beacon cycle time started of competition period further；

Wherein, a beacon cycle includes a fixed length period, and fixed length Time segments division is at least two period, and each period at least distributes a website, has at least a period distribution at least two website.Further, after the fixed length period, a beacon cycle can also include competition period (ContentPeriod), and the website having time delay sensitive traffic can at competition period competitive channel.

It should be noted that for the period quantity can according to the quantity set distributing website in day part, when website sum certain, in day part, the quantity of distribution website is more many, and the quantity of period is more few, otherwise, in day part, the quantity of distribution website is more few, and the quantity of period is more many.

It should be noted that the length of period can be set according to the quantity and history service situation distributing website in day part, for instance, the Period Length that quantity is many, portfolio is big of distribution website is more long.

304: each website, at the beacon periodic awakening self being assigned with, intercepts the 4th beacon frame, when needs transmit data, in the period transmission data that this website is assigned with；

Wherein, the period transmission data that website is assigned with at this website, specifically there is two ways:

First kind of way is, website adopts the mode of competition, in the period transmission data that this website is assigned with.The mode of competition can adopt RTS/CTS (RequestToSend/ClearToSend, request to send/allowed to send) handshake mechanism to be at war with.Concrete, each website uses RTS frame competitive channel, once a certain website is successfully transmitted RTS frame, and have received the CTS frame of AP response, then this website sends the Frame of oneself at once, and other websites in this period can listen to the Frame that this website sends.

The second way is, AP specifies each website to be assigned with the sub-period of period transmission data at it, and website transmits data according to the AP sub-period specified.

305: if schedule information further indicates the time started of competition period, the website having time delay sensitive traffic in beacon cycle corresponding each website can compete period competitive channel；

The period is competed for there being the station transmission data of time delay sensitive traffic, it is possible in scheduling process, well take into account the efficiency of transmission of delay sensitive business beacon Period Reservation one.Concrete, the website having time delay sensitive traffic in beacon cycle corresponding each website sends frame competitive channel in the competition period, specifically can have two kinds of channel competition methods:

The second is, RTS/CTS mechanism is used to carry out competitive channel, concrete, each website uses RTS frame competitive channel, once a certain website is successfully transmitted RTS frame, and have received the CTS frame of AP response, then this website sends the Frame of oneself at once, and other websites in this period can listen to the Frame that this website sends.

AP detects that the free time of preset duration occurs in channel within the period distributing to website, AP issues the 3rd release information and actively discharges the remaining time of this period, 3rd release information comprises the period that AP each website rearranged is assigned with, the period that each website is assigned with according to AP each website rearranged, in the period transmission data that this website is assigned with, making when free time occurs in a period, the scheduling of other websites can shift to an earlier date, thus avoiding channel long free time occur.

The present embodiment carries out data transmission by least one period is distributed at least two website, carries out data transmission relative to a period is distributed to a website, improves the utilization rate of period, saves time resource, improves efficiency of transmission.It addition, by competing the period for there being the station transmission data of time delay sensitive traffic beacon Period Reservation one, it is possible in scheduling process, well take into account the efficiency of transmission of delay sensitive business.Additionally, by detecting that the free time of preset duration occurs in channel within the period distributing to website, the 3rd release information that issues actively discharges the remaining time of this period, and rearrange the period that each website is assigned with, can avoid channel that long free time occurs, save time resource further, improve efficiency of transmission.

The subsequent embodiment of the present invention provide realize or should device in aforementioned manners, this device can be the access point AP in wlan system or site STA.AP and STA realizes or runs method corresponding in said method embodiment and function respectively.

Embodiment 5

Referring to Figure 13, present embodiments providing a kind of website 40, website 40 includes:

Intercepting module 401, be used for intercepting the first beacon frame, the first beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with；

Determining module 402, the DTIM information for comprising according to the first beacon frame determines the beacon period in current dispatching cycle for website distribution；

Intercept module 401, it is additionally operable in the beacon period distributed for website, intercept the second beacon frame, second beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website；

Transport module 403, for when needs transmit data, the instruction according to the schedule information of current beacon cycle, in the period transmission data that website place group is assigned with.

Wherein, transport module 403 includes the first transmission unit or the second transmission unit,

First transmission unit, for the period transmission data adopting the mode of competition to be assigned with in website place group；

Second transmission unit, for the sub-period transmission data specified in the period that website place group is assigned with according to access point.

Further, schedule information is additionally operable to indicate in this beacon period the time started of competition period；

Website also includes: competition module, for after the period transmission data that website place group is assigned with, when there being time delay sensitive traffic, at competition period competitive channel.

The present embodiment carries out data transmission by a period is distributed to the website of a group, and have at least a group website to include at least two website, carry out data transmission relative to a period is distributed to a website, improve the utilization rate of period, save time resource, improve efficiency of transmission.It addition, by competing the period for there being the station transmission data of time delay sensitive traffic beacon Period Reservation one, it is possible in scheduling process, well take into account the efficiency of transmission of delay sensitive business.

Embodiment 6

Referring to Figure 14, present embodiments providing a kind of access point 50, access point 50 includes:

First sending module 501, for sending the first beacon frame in the period 1, first beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with, the DTIM information that website comprises according to the first beacon frame is made to determine the beacon period that in current dispatching cycle, website is assigned with；

Second sending module 502, for sending the second beacon frame in second round, second beacon frame comprises the schedule information of current beacon cycle, for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website, make the website the needing transmission data instruction according to the schedule information of current beacon cycle, in the period transmission data needing the website place group of transmission data to be assigned with.

Further, access point also includes: distribution module, period for being assigned with for each group of website specifies the sub-period for station transmission data, makes the sub-period transmission data that the website needing transmission data is specified in the period needing the website place group of transmission data to be assigned with according to access point.

Further, schedule information is additionally operable in instruction current beacon cycle the time started of competition period, makes the website of time delay sensitive traffic at competition period competitive channel.

Further, access point also includes:

First release module, for competing beginning timing after successfully when website in the competition period, the first release information is sent when arriving the first duration, make current beacon cycle accordingly respectively group website in the website having time delay sensitive traffic receive the first release information after, start competition competition the period remaining period.

Further, access point also includes:

Second release module, for sending the second release information when the second duration idle occurs in channel, second release information comprises each group website in the current beacon cycle that access point is rearranged and is allocated for the period of transmission data, make the period that in the current beacon cycle that the website receiving the second release information rearranges according to access point, each group website is assigned with, in the period transmission data that the website place group receiving the second release information is assigned with.

Embodiment 7

Referring to Figure 15, present embodiments providing a kind of website 60, website 60 includes:

Intercepting module 601, be used for intercepting the 3rd beacon frame, the 3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with；

Determining module 602, the DTIM information for comprising according to the 3rd beacon frame determines the beacon period in current dispatching cycle for website distribution；

Intercept module 601, it is additionally operable in the beacon period distributed for website, intercept the 4th beacon frame, 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, has at least a period distribution at least two website；

Transport module 603, for when needs transmit data, the instruction according to the schedule information of current beacon cycle, in the period transmission data that website is assigned with.

Wherein, transport module 603 includes the first transmission unit or the second transmission unit,

First transmission unit, for the period transmission data adopting the mode of competition to be assigned with at this website；

Or,

Second transmission unit, according to the sub-period transmission data that access point was specified in the period that this website is assigned with.

Further, schedule information is additionally operable in instruction current beacon cycle the time started of competition period；

Website also includes competition module, for after the period transmission data that website is assigned with, when there being time delay sensitive traffic, at competition period competitive channel.

The present embodiment carries out data transmission by least one period is distributed at least two website, carries out data transmission relative to a period is distributed to a website, improves the utilization rate of period, saves time resource, improves efficiency of transmission.It addition, by competing the period for there being the station transmission data of time delay sensitive traffic beacon Period Reservation one, it is possible in scheduling process, well take into account the efficiency of transmission of delay sensitive business.

Embodiment 8

Referring to Figure 16, present embodiments providing a kind of access point 70, access point 70 includes:

First sending module 701, for sending the 3rd beacon frame in the period 1,3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with, the DTIM information that website comprises according to the 3rd beacon frame is made to determine the beacon period that in current dispatching cycle, website is assigned with；

Second sending module 702, for sending the 4th beacon frame in second round, 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, have at least a period distribution at least two website, make the website the needing transmission data instruction according to the schedule information of current beacon cycle, in the period transmission data needing the website of transmission data to be assigned with.

Further, access point also includes: distribution module, specify the sub-period for station transmission data for the period being used for as each website is assigned with, make the sub-period transmission data that the website needing transmission data is specified in the period needing the website of transmission data to be assigned with according to access point.

Further, access point also includes:

3rd sending module, for channel occur the 3rd duration idle time send the 3rd release information, 3rd release information comprises the period that in the current beacon cycle that access point is rearranged, each website is assigned with, make to receive the period that in the current beacon cycle that the website of the 3rd release information is rearranged according to access point, each website is assigned with, in the period transmission data that the website receiving the 3rd release information is assigned with.

Embodiment 9

Referring to Figure 17, present embodiments provide a kind of dispatching patcher, it is characterised in that this system includes: access point 50 and website 40；

Access point 50 includes:

First sending module 501, for sending the first beacon frame in the period 1, the first beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each group website is assigned with；

Second sending module 502, for sending the second beacon frame in second round, second beacon frame comprises the schedule information of current beacon cycle, and for indicating each group website in current beacon cycle to be allocated for the period of transmission data, at least one of which group website includes at least two website；

Website includes:

Intercept module 401, be used for intercepting the first beacon frame；

Intercept module 401, be additionally operable to, in the beacon period distributed for website, intercept the second beacon frame；

Embodiment 10

Referring to Figure 18, present embodiments providing a kind of dispatching patcher, this system includes: access point 70 and website 60；

Access point 70 includes:

First sending module 701, for sending the 3rd beacon frame in the period 1, the 3rd beacon frame comprises delivery transmission instruction information DTIM information, for indicating the beacon period that in current dispatching cycle, each website is assigned with；

Second sending module 702, for sending the 4th beacon frame in second round, 4th beacon frame comprises the schedule information of current beacon cycle, for indicating each website in current beacon cycle to be allocated for the period of transmission data, each period distributes at least one website, has at least a period distribution at least two website；

Website 60 includes:

Intercept module 601, be used for intercepting the 3rd beacon frame；

Intercept module 601, be additionally operable to, in the beacon period distributed for website, intercept the 4th beacon frame；

Website also includes: competition module, for after the period transmission data that website is assigned with, when there being time delay sensitive traffic, at competition period competitive channel.

Those skilled in the art are it can be understood that arrive, and device embodiment described above is merely schematic, the division of described units/modules, are only a kind of logic function and divide, and actual can have other dividing mode when realizing.Such as, each functional unit/module can be integrated in a processing unit/module, it is also possible to is that unit/module is individually physically present, it is also possible to two or more units/modules are integrated in a units/modules.Above-mentioned integrated units/modules both can adopt the form of hardware to realize, it would however also be possible to employ the form of SFU software functional unit/module realizes.

One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can be completed by hardware, can also be completed by the hardware that program carrys out instruction relevant, described program can be stored in a kind of computer-readable recording medium, storage medium mentioned above can be read only memory, disk or CD etc..

Claims

1. a dispatching method, it is characterised in that described method includes:

When needs transmit data, the instruction according to the described schedule information of described current beacon cycle of the described website, the mode competed or the sub-period specified transmission data are adopted in the period that described website place group is assigned with.

2. method according to claim 1, it is characterised in that described schedule information is additionally operable to indicate in described current beacon cycle the time started of competition period；

Described after the period transmission data that described website place group is assigned with, described method also includes: when described website has time delay sensitive traffic, at described competition period competitive channel.

3. method according to claim 2, it is characterised in that described when described website has time delay sensitive traffic, at described website after the described competition period competes channel, described method also includes:

When other websites of described website place group determine the group channel competition success of described website place, in the first duration, described website place group has the website competitive channel of time delay sensitive traffic.

4. method according to claim 3, it is characterised in that described in the first duration, after having the website competitive channel of time delay sensitive traffic in the group of described website place, described method also includes:

When arriving the first duration, described current beacon cycle after respectively the website having time delay sensitive traffic in group website receives the first release information that access point sends accordingly, starts to compete the described competition period remaining period.

5. method according to claim 1, it is characterised in that described website is after the period transmission data that described website place group is assigned with, and described method also includes:

Receive the website of the second release information that access point sends, in the described current beacon cycle that the described access point comprised according to described second release information is rearranged when the second duration idle occurs in channel, each group website is allocated for the period of transmission data, in the period transmission data that the website place group receiving described second release information is assigned with.

6. a dispatching method, it is characterised in that described method includes:

7. method according to claim 6, it is characterised in that described schedule information is additionally operable to indicate in described current beacon cycle the time started of competition period, makes the website of time delay sensitive traffic at described competition period competitive channel.

8. method according to claim 7, it is characterised in that described method also includes:

Described access point competes beginning timing after successfully when website in the described competition period, the first release information is sent when arriving the first duration, after making described current beacon cycle respectively the website having time delay sensitive traffic in group website receiving described first release information accordingly, start to compete the described competition period remaining period.

9. method according to claim 6, it is characterised in that described method also includes:

Described access point sends the second release information when the second duration idle occurs in channel, described second release information comprises each group website in the described current beacon cycle that described access point is rearranged and is allocated for the period of transmission data, make to receive the period that in the described current beacon cycle that the website of described second release information is rearranged according to described access point, each group website is assigned with, in the period transmission data that the website place group receiving described second release information is assigned with.

10. a dispatching method, it is characterised in that described method includes:

11. method according to claim 10, it is characterised in that described schedule information is additionally operable to indicate in described current beacon cycle the time started of competition period；

Described after the period transmission data that described website is assigned with, described method also includes: when described website has time delay sensitive traffic, at described competition period competitive channel.

12. method according to claim 10, it is characterised in that described website is after the period transmission data that described website is assigned with, and described method also includes:

Receive the website of the 3rd release information that access point sends, in the described current beacon cycle that the described access point comprised according to described 3rd release information is rearranged when the 3rd duration idle occurs in channel, each website is allocated for the period of transmission data, in the period transmission data that the website receiving described 3rd release information is assigned with.

13. a dispatching method, it is characterised in that described method includes:

14. method according to claim 13, it is characterised in that described method also includes:

Described access point channel occur the 3rd duration idle time send the 3rd release information, described 3rd release information comprises the period that in the described current beacon cycle that described access point is rearranged, each website is assigned with, make to receive the period that in the current beacon cycle that the website of described 3rd release information is rearranged according to described access point, each website is assigned with, in the period transmission data that the website receiving described 3rd release information is assigned with.

15. a website, it is characterised in that described website includes:

16. website according to claim 15, it is characterised in that described schedule information is additionally operable to indicate in described current beacon cycle the time started of competition period；

Described website also includes: competition module, for after the period transmission data that described website place group is assigned with, when there being time delay sensitive traffic, at described competition period competitive channel.

17. an access point, it is characterised in that described access point includes:

18. access point according to claim 17, it is characterised in that described schedule information is additionally operable to indicate in described current beacon cycle the time started of competition period, make the website of time delay sensitive traffic at described competition period competitive channel.

19. access point according to claim 18, it is characterised in that described access point also includes:

First release module, for competing beginning timing after successfully when website in the described competition period, the first release information is sent when arriving the first duration, after making described current beacon cycle respectively the website having time delay sensitive traffic in group website receiving described first release information accordingly, start to compete the described competition period remaining period.

20. access point according to claim 17, it is characterised in that described access point also includes:

Second release module, for sending the second release information when the second duration idle occurs in channel, described second release information comprises each group website in the described current beacon cycle that described access point is rearranged and is allocated for the period of transmission data, make to receive the period that in the described current beacon cycle that the website of described second release information is rearranged according to described access point, each group website is assigned with, in the period transmission data that the website place group receiving described second release information is assigned with.

21. a website, it is characterised in that described website includes:

22. website according to claim 21, it is characterised in that described schedule information is additionally operable to indicate in described current beacon cycle the time started of competition period；

Described website also includes competition module, for after the period transmission data that described website is assigned with, when there being time delay sensitive traffic, at described competition period competitive channel.

23. an access point, it is characterised in that described access point includes:

24. access point according to claim 23, it is characterised in that

Described access point, be additionally operable to channel occur the 3rd duration idle time send the 3rd release information, described 3rd release information comprises the period that in the described current beacon cycle that described access point is rearranged, each website is assigned with, make to receive the period that in the described current beacon cycle that the website of described 3rd release information is rearranged according to described access point, each website is assigned with, in the period transmission data that the website receiving described 3rd release information is assigned with.

25. a dispatching patcher, it is characterised in that described system includes: access point and website；

Described access point includes:

Described website includes:

Intercept module, be used for intercepting described beacon frame；

26. system according to claim 25, it is characterised in that described schedule information is additionally operable to indicate in described current beacon cycle the time started of competition period；

27. a dispatching patcher, it is characterised in that described system includes: access point and website；

Described access point includes:

Described website includes:

Intercept module, be used for intercepting described beacon frame；

28. system according to claim 27, it is characterised in that described schedule information is additionally operable to indicate in described current beacon cycle the time started of competition period；

Described website also includes: competition module, for after the period transmission data that described website is assigned with, when there being time delay sensitive traffic, at described competition period competitive channel.