Summary of the invention
The embodiment of the present invention provides the communication means and communication equipment in a kind of WLAN, can be improved wireless communicationThe middle availability of frequency spectrum.
In a first aspect, providing a kind of method of data transmission in Wireless LAN, comprising: generate physical layer protocol numberAccording to unit frame PPDU, the channel width for carrying the PPDU is less than 20MHZ, and wherein the PPDU includes M efficiently Short Training subdomain HE-STF and data subdomain do not include the Short Training subdomain L-STF with backward compatibility function, the length with backward compatibility functionThe training subdomain L-LTF and signal field subdomain L-SIG with backward compatibility function；Send the PPDU.
With reference to first aspect, in the first possible implementation, which is greater than or equal to 2.
With reference to first aspect or the first possible implementation, in the second possible implementation, the PPDU is alsoIncluding efficiently long training subdomain HE-LTF.
In conjunction with second of possible implementation, in the third possible implementation, which further includes efficiently believingNumber field subdomain HE-SIG.
With reference to first aspect, first any possible implementation into the third possible implementation,In four kinds of possible implementations, before generation physical layer protocol data unit frame PPDU, further includes: receive subchannel moneyTrigger frame is distributed in source, which distributes trigger frame and generate the PPDU for triggering, which distributes trigger frameIncluding the Short Training subdomain L-STF with backward compatibility function, the long training subdomain L-LTF with backward compatibility function and haveThe signal field subdomain L-SIG of backward compatibility function, carry the sub-channel resource distribution trigger frame channel width be 20MHZ,40MHZ, 80MHZ or 160MHZ.
Second aspect provides a kind of method that the data for WLAN are transmitted, comprising: send subchannel moneyTrigger frame is distributed in source, which distributes trigger frame and generate physical layer protocol data unit frame PPDU for triggering；It receivesWebsite distributes the PPDU that trigger frame is sent according to sub-channel resource, and the channel width for carrying the PPDU is less than 20MHZ, wherein shouldPPDU includes M efficiently Short Training subdomain HE-STF and data subdomains, does not include Short Training with backward compatibility functionDomain L-STF, the long training subdomain L-LTF and signal field subdomain L- with backward compatibility function with backward compatibility functionSIG。
In conjunction with second aspect, in the first possible implementation, which is greater than or equal to 2.
In conjunction with the possible implementation of the first of second aspect or second aspect, in second of possible implementationIn, which further includes efficient long training subdomain HE-LTF.
In conjunction with second of possible implementation of second aspect, in the third possible implementation, the PPDU is alsoIncluding efficient signal field subdomain HE-SIG.
In conjunction with first any possible realization into the third possible implementation of second aspect, second aspectMode, in the fourth possible implementation, sub-channel resource distribution trigger frame includes have backward compatibility function shortTraining subdomain L-STF, the long training subdomain L-LTF with backward compatibility function and the signal field with backward compatibility functionSubdomain L-SIG, the channel width for carrying sub-channel resource distribution trigger frame is 20MHZ, 40MHZ, 80MHZ or 160MHZ.
The third aspect provides a kind of equipment that the data for WLAN are transmitted, comprising: generation unit is used forPhysical layer protocol data unit frame PPDU is generated, the channel width for carrying the PPDU is less than 20MHZ, and wherein the PPDU includes MEfficient Short Training subdomain HE-STF and data subdomain, do not include the Short Training subdomain L-STF with backward compatibility function, haveThe long training subdomain L-LTF and signal field subdomain L-SIG with backward compatibility function of backward compatibility function；Transmission unit,For sending the PPDU.
In conjunction with the third aspect, in the first possible implementation, which is greater than or equal to 2.
In conjunction with the possible implementation of the first of the third aspect or second aspect, in second of possible implementationIn, which further includes efficient long training subdomain HE-LTF.
In conjunction with second of possible implementation of the third aspect, in the third possible implementation, the PPDU is alsoIncluding efficient signal field subdomain HE-SIG.
In conjunction with first any possible realization into the third possible implementation of the third aspect, the third aspectMode, in the fourth possible implementation, further includes: receiving unit, for generating physical layer protocol in the generation unitBefore data unit frame PPDU, receives sub-channel resource and distribute trigger frame, sub-channel resource distribution trigger frame is for triggering lifeAt the PPDU, sub-channel resource distribution trigger frame includes the Short Training subdomain L-STF with backward compatibility function, has backwardThe long training subdomain L-LTF and signal field subdomain L-SIG with backward compatibility function of compatibility function, carries subchannel moneyThe channel width that trigger frame is distributed in source is 20MHZ, 40MHZ, 80MHZ or 160MHZ.
Fourth aspect provides a kind of equipment that the data for WLAN are transmitted characterized by comprising hairUnit is sent, for sending sub-channel resource distribution trigger frame, which distributes trigger frame and generate physics for triggeringLayer protocol data unit frame PPDU；Receiving unit distributes being somebody's turn to do for trigger frame transmission according to sub-channel resource for receiving stationPPDU, the channel width for carrying the PPDU are less than 20MHZ, wherein the PPDU include M efficiently Short Training subdomain HE-STF andData subdomain does not include the Short Training subdomain L-STF with backward compatibility function, the long training subdomain with backward compatibility functionL-LTF and signal field subdomain L-SIG with backward compatibility function.
In conjunction with fourth aspect, in the first possible implementation, which is greater than or equal to 2.
In conjunction with the possible implementation of the first of fourth aspect or fourth aspect, in second of possible implementationIn, which further includes efficient long training subdomain HE-LTF.
In conjunction with second of possible implementation of fourth aspect, in the third possible implementation, the PPDU is alsoIncluding efficient signal field subdomain HE-SIG.
In conjunction with first any possible realization into the third possible implementation of fourth aspect, fourth aspectMode, in the fourth possible implementation, sub-channel resource distribution trigger frame includes have backward compatibility function shortTraining subdomain L-STF, the long training subdomain L-LTF with backward compatibility function and the signal field with backward compatibility functionSubdomain L-SIG, the channel width for carrying sub-channel resource distribution trigger frame is 20MHZ, 40MHZ, 80MHZ or 160MHZ.
Based on the above-mentioned technical proposal, the PPDU in the embodiment of the present invention can bandwidth less than 20MHz channel under workMake, and after not including the Short Training subdomain L-STF with backward compatibility function, have due to the PPDU in the embodiment of the present inventionTo the long training subdomain L-LTF of compatibility function and the signal field subdomain L-SIG physical layer protocol number with backward compatibility functionAccording to unit frame PPDU, frequency spectrum resource is saved, improves the availability of frequency spectrum.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, completeSite preparation description, it is clear that described embodiment is a part of the embodiments of the present invention, rather than whole embodiments.Based on this hairEmbodiment in bright, those of ordinary skill in the art's every other reality obtained without making creative workExample is applied, all should belong to the scope of protection of the invention.
It should be understood that the website (Station, STA) in the embodiment of the present invention, is referred to as user site, system, userUnit, access terminal, movement station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication are setStandby, user agent, user apparatus or user equipment (User Equipment, UE).The STA can be cellular phone, wireless electricityWords, session initiation protocol (Session Initiation Protocol, SIP) phone, wireless local loop (WirelessLocal Loop, WLL) it stands, personal digital assistant (Personal Digital Assistant, PDA), there is wireless local areaThe handheld device of net (such as Wi-Fi) communication function calculates equipment or is connected to other processing equipments of radio modem.
It should also be understood that the access point (Access Point, AP) in the embodiment of the present invention can be for wireless networkThe core of wireless exchange board and wireless network can be used for being communicated with website by WLAN, and by websiteData are transmitted to network side or the data of automatic network in future side are transmitted to access terminal.
Fig. 1 is the schematic flow diagram of the method for data transmission according to an embodiment of the invention.Method shown in FIG. 1 canTo be executed by transmitting terminal, such as can be executed by website, specifically, method as shown in Figure 1, comprising:
110, physical layer protocol data unit frame PPDU is generated, the channel width for carrying PPDU is less than 20MHZ, whereinPPDU includes M efficiently Short Training subdomain HE-STF and data subdomains, does not include Short Training with backward compatibility functionDomain L-STF, the long training subdomain L-LTF and signal field subdomain L- with backward compatibility function with backward compatibility functionSIG；
120, send PPDU.
It specifically, it includes M efficiently Short Training subdomain HE-STF and data subdomains that website, which generates, and does not include havingThe Short Training subdomain L-STF of backward compatibility function, the length with backward compatibility function train subdomain L-LTF and have backward compatibilityThe PPDU of the signal field subdomain L-SIG of function, and the channel width for carrying PPDU is less than 20MHZ, website is simultaneously sent out to access pointThe PPDU is given, obtains target data so that access point parses the PPDU.
Therefore, the PPDU in the embodiment of the present invention can work under channel of the bandwidth less than 20MHz, and due to this hairPPDU in bright embodiment does not include the Short Training subdomain L-STF with backward compatibility function, the length with backward compatibility functionThe training subdomain L-LTF and signal field subdomain L-SIG physical layer protocol data unit frame PPDU with backward compatibility function, subtractsLack the bit number of PPDU, and then saved the frequency spectrum resource for transmitting the PPDU, improves the availability of frequency spectrum.
It should be understood that the subdomain in the embodiment of the present invention is referred to as field, the embodiment of the present invention is not limited to this.
It should be understood that M efficient Short Training subdomain HE-STF in the embodiment of the present invention are corresponding with M sub-channels.M can be withMore than or equal to 1.
In other words, M can for 1 and also be greater than or equal to 2, the embodiment of the present invention limits not to this.Wherein, whenWhen M is greater than or equal to 2, M identical efficient Short Training subdomain HE-STF can be used for time and frequency between different subchannelsSynchronization.
Fig. 2 is the structural schematic diagram of PPDU according to an embodiment of the invention.PPDU as shown in Figure 2 includes M highImitate Short Training subdomain HE-STF and data subdomain (Data).
Optionally, as another embodiment, the PPDU in the embodiment of the present invention can also include efficiently long training subdomain(High Efficiency Short Training field, HE-STF).
For example, PPDU as shown in Figure 3 includes: M efficiently Short Training subdomain HE-STF, efficiently long training subdomain HE-LTFAnd data subdomain.Wherein, HE-LTF is located at after M group HE-STE, and is located at before data field.
It should be understood that the position of each subdomain is not fixed and invariable in Fig. 3, the position of each subdomain can carry out appropriateAdjustment, the embodiment of the present invention limit not to this.
Further, as another embodiment, the PPDU in the embodiment of the present invention can also include efficient signal fieldDomain (High Efficiency Signal field, HE-SIG).
For example, PPDU as shown in Figure 4 includes: M efficiently Short Training subdomain HE-STF, efficiently long training subdomain HE-LTF, efficient signal field subdomain HE-SIG and data subdomain.Wherein, efficient signal field subdomain HE-SIG includes high efficiencySignaling A subdomain (High Efficiency Signal-A field, HE-SIG-A) and high efficiency signaling B subdomain (HighEfficiency Signal-B field, HE-SIG-B), and HE-SIG is located at after HE-STF, and be located at data field itBefore.
It should be understood that the position of each subdomain is not fixed and invariable in Fig. 4, the position of each subdomain can be carried out accordinglyAdjustment, the embodiment of the present invention limit not to this.
It should be understood that the example of Fig. 2-Fig. 4 is used for the purpose of helping skilled in the art to understand the embodiment of the present invention, rather thanBy the embodiment of the present invention be limited to illustrated by specific value or concrete scene.Those skilled in the art are according to given Fig. 2-The example of Fig. 4, it is clear that the modification or variation of various equivalences can be carried out, for example, can be by the position tune of the subdomain in Fig. 2-Fig. 4Whole etc., such modification or variation are also fallen into the range of the embodiment of the present invention.
Optionally, as another embodiment, before 110, present invention method can also include receiving subchannelResource allocation trigger frame, sub-channel resource distribute trigger frame and generate PPDU for triggering, and sub-channel resource distribution trigger frame includesShort Training subdomain L-STF with backward compatibility function, the length with backward compatibility function are trained subdomain L-LTF and are had backwardThe signal field subdomain L-SIG of compatibility function, carrying sub-channel resource distribution trigger frame channel width be 20MHZ, 40MHZ,80MHZ or 160MHZ.
Specifically, website is received after including the Short Training subdomain L-STF with backward compatibility function, having first to simultaneousHold the sub-channel resource distribution of the long training subdomain L-LTF and signal field subdomain L-SIG with backward compatibility function of functionTrigger frame, sub-channel resource distribute trigger frame and generate PPDU for triggering, and later, website is distributed according to the sub-channel resource and touchedSending out frame and generating includes M efficiently Short Training subdomain HE-STF and data subdomains, and does not include have backward compatibility function shortTraining subdomain L-STF, the long training subdomain L-LTF with backward compatibility function and the signal field with backward compatibility functionThe PPDU of subdomain L-SIG, and the channel width for carrying PPDU is less than 20MHZ, website simultaneously sends the PPDU to access point, to connectAccess point parses the PPDU and obtains target data.
Therefore, the PPDU in the embodiment of the present invention can work under channel of the bandwidth less than 20MHz, and due to this hairPPDU in bright embodiment does not include the Short Training subdomain L-STF with backward compatibility function, the length with backward compatibility functionThe training subdomain L-LTF and signal field subdomain L-SIG physical layer protocol data unit frame PPDU with backward compatibility function, subtractsLack the bit number of PPDU, and then saved the frequency spectrum resource for transmitting the PPDU, improves the availability of frequency spectrum.
It should be understood that if there is the websites for not supporting 802.11ax function in entire BSS, and due in 802.11axPPDU without the domain L-SIG, then do not support that the website of 802.11ax function is the length that can not parse PPDU, then theseThe network configuration vector (network allocation vector, NAV) of oneself can not be correctly arranged in website, so notEnter battery saving mode when 802.11ax PPDU is transmitted conducive to these websites, is unfavorable for these website power savings；But due to the present inventionThe PPDU transmission of 802.11ax in embodiment is to be triggered by sub-channel resource distribution trigger frame, and sub-channel resource distribution is touchedHair frame is transmitted in 20MHZ channel width or band above, so trigger frame has L-SIG, L-STF, L-LTF certainly, byIn duration that should be required comprising subsequent 802.11ax PPDU transmission in L-SIG, in this way for not supported in BSSThe website of 802.11ax function can parse the time that the domain L-SIG obtains transmission PPDU, and then can be arranged certainly according to the timeOneself NAV reaches power saving purpose so as to enter dormant state in 802.11ax PPDU transmission.
It should also be understood that in embodiments of the present invention, the interframe space IFS for sending PPDU is less than short interFrameGap SIFS.ExampleSuch as SIFS when a length of 10us, then the duration of IFS can be 5us.
Specifically, those are not listened to the website for not supporting 802.11ax function of trigger frame, in order to avoidInterference of these websites to 802.11ax PPDU entire data communication can define IFS (inter- in the embodiment of the present inventionFrame space) substitute existing SIFS (short inter-frame space), and IFS is set less than SIFS.ThisThese do not support the website of 802.11ax function can not be robbed in 802.11ax PPDU to account for channel with sample, avoid other websitesThe interference of (not supporting the website of 802.11ax function), ensure that the communication of 802.11ax PPDU.
It should also be understood that the data subdomain in PPDU of the embodiment of the present invention may include media access control (MediaAccess Control, MAC) head point, and 6 bits of MAC header part are used to indicate the type of PPDU.
In other words indicate that work does not include having backward compatibility function below 20MHZ channel width with 6 bitsShort Training subdomain L-STF, the long training subdomain L-LTF with backward compatibility function and the signal field with backward compatibility functionThe PPDU of subdomain L-SIG.
For example, as shown in table 1, the type (Type) and subtype of MAC header part can be used in the embodiment of the present invention(Subtype) B3, B2, B7, B6, B5 and B4 in domain, 6 bits indicate the type of the PPDU, such as use " 101101 " tableShow the type of the PPDU, wherein types value B3 B2 is 10, and type specification (Type description) is data (Data), sonTypes value B7 B6 B5 B4 is 1101, and subtype specification (Subtype description) is efficient data (HE-data).
Table 1
Above, the method transmitted in conjunction with the data that Fig. 1 to Fig. 4 slave site side describes the embodiment of the present invention, is tied belowClose the method that Fig. 5 is transmitted from the data that access point side describes the embodiment of the present invention.
It should be understood that method shown in fig. 5 is corresponding with method shown in FIG. 1, difference is, the method for Fig. 1 can be byTransmitting terminal, such as website execute, and the method for Fig. 5 can be to be executed by receiving end, such as access point.PPDU's involved in Fig. 5The associated description of the structure of structure and sub-channel resource distribution trigger frame, may refer to the phase in above Fig. 1 embodiment of the methodIt should describe, it is appropriate herein to omit detailed description in order to avoid repeating.Specifically, method as shown in Figure 5 includes:
510, it sends sub-channel resource and distributes trigger frame, sub-channel resource distributes trigger frame and generates physical layer association for triggeringDiscuss data unit frame PPDU；
520, receiving station distributes the PPDU that trigger frame is sent according to sub-channel resource, and the channel width for carrying PPDU is smallIn 20MHZ, it does not include with backward compatibility function that wherein PPDU, which includes M efficiently Short Training subdomain HE-STF and data subdomains,The Short Training subdomain L-STF of energy, the long training subdomain L-LTF with backward compatibility function and the signal with backward compatibility functionField subdomain L-SIG.
Therefore, the PPDU in the embodiment of the present invention can work under channel of the bandwidth less than 20MHz, and due to this hairPPDU in bright embodiment does not include the Short Training subdomain L-STF with backward compatibility function, the length with backward compatibility functionThe training subdomain L-LTF and signal field subdomain L-SIG physical layer protocol data unit frame PPDU with backward compatibility function, subtractsLack the bit number of PPDU, and then saved the frequency spectrum resource for transmitting the PPDU, improves the availability of frequency spectrum.
It should be understood that the subdomain in the embodiment of the present invention is referred to as field, the embodiment of the present invention is not limited to this.
It should be understood that M efficient Short Training subdomain HE-STF in the embodiment of the present invention are corresponding with M sub-channels.M can be withMore than or equal to 1.
In other words, M can for 1 and also be greater than or equal to 2, the embodiment of the present invention limits not to this.Wherein, whenWhen M is greater than or equal to 2, M identical efficient Short Training subdomain HE-STF can be used for time and frequency between different subchannelsSynchronization.
Fig. 2 is the structural schematic diagram of PPDU according to an embodiment of the invention.PPDU as shown in Figure 2 includes M highImitate Short Training subdomain HE-STF and data subdomain.
Optionally, as another embodiment, the PPDU in the embodiment of the present invention can also include efficiently long training subdomain HE-LTF。
For example, PPDU as shown in Figure 3 includes: M efficiently Short Training subdomain HE-STF, efficiently long training subdomain HE-LTFAnd data subdomain.Wherein, HE-LTF is located at after M group HE-STE, and is located at before data field.
It should be understood that the position of each subdomain is not fixed and invariable in Fig. 3, the position of each subdomain can carry out appropriateAdjustment, the embodiment of the present invention limit not to this.
Further, as another embodiment, the PPDU in the embodiment of the present invention can also include efficient signal fieldDomain HE-SIG.
For example, PPDU as shown in Figure 4 includes: M efficiently Short Training subdomain HE-STF, efficiently long training subdomain HE-LTF, efficient signal field subdomain HE-SIG and data subdomain.Wherein, efficient signal field subdomain HE-SIG includes HE-SIG-A and HE-SIG-B, and HE-SIG is located at after HE-STF, and is located at before data field.
It should be understood that the position of each subdomain is not fixed and invariable in Fig. 4, the position of each subdomain can be carried out accordinglyAdjustment, the embodiment of the present invention limit not to this.
It should be understood that the example of Fig. 2-Fig. 4 is used for the purpose of helping skilled in the art to understand the embodiment of the present invention, rather thanBy the embodiment of the present invention be limited to illustrated by specific value or concrete scene.Those skilled in the art are according to given Fig. 2-The example of Fig. 4, it is clear that the modification or variation of various equivalences can be carried out, for example, can be by the position tune of the subdomain in Fig. 2-Fig. 4Whole etc., such modification or variation are also fallen into the range of the embodiment of the present invention.
Optionally, as another embodiment, sub-channel resource distributes trigger frame and generates PPDU, sub-channel resource for triggeringDistribution trigger frame includes the Short Training subdomain L-STF with backward compatibility function, the long training subdomain with backward compatibility functionL-LTF and signal field subdomain L-SIG with backward compatibility function, the channel strip of carrying sub-channel resource distribution trigger frameWidth is 20MHZ, 40MHZ, 80MHZ or 160MHZ.
Specifically, access point first to website transmission include the Short Training subdomain L-STF with backward compatibility function,The son letter of the long training subdomain L-LTF and signal field subdomain L-SIG with backward compatibility function with backward compatibility functionRoad resource allocation trigger frame, sub-channel resource distribute trigger frame and generate PPDU for triggering, and later, website is provided according to the subchannelIt includes M efficiently Short Training subdomain HE-STF and data subdomains that source, which is distributed trigger frame and generated, and does not include with backward compatibilityThe Short Training subdomain L-STF of function, the length with backward compatibility function train subdomain L-LTF and with backward compatibility functionThe PPDU of signal field subdomain L-SIG, and the channel width for carrying PPDU is less than 20MHZ, what access point receiving station was sent shouldPPDU, access point parses the PPDU and obtains target data later.
Therefore, the PPDU in the embodiment of the present invention can work under channel of the bandwidth less than 20MHz, and due to this hairPPDU in bright embodiment does not include the Short Training subdomain L-STF with backward compatibility function, the length with backward compatibility functionThe training subdomain L-LTF and signal field subdomain L-SIG physical layer protocol data unit frame PPDU with backward compatibility function, subtractsLack the bit number of PPDU, and then saved the frequency spectrum resource for transmitting the PPDU, improves the availability of frequency spectrum.
If should be understood that there is the stations for not supporting 802.11ax function in entire BSS (Basis service set)Point, and since the PPDU in 802.11ax is without the domain L-SIG, then do not support that the website of 802.11ax function is can not to parseThe length of PPDU, then the network configuration vector (network of oneself can not be correctly arranged in these websitesAllocation vector, NAV), it is unfavorable for these websites in this way and enters battery saving mode in 802.11ax PPDU transmission, noConducive to these website power savings；But since the PPDU of the 802.11ax in embodiment of the present invention transmission is to be distributed to touch by sub-channel resourceHair frame is triggered, and sub-channel resource distribution trigger frame is transmitted in 20MHZ channel width or band above, so trigger frameCertainly L-SIG, L-STF, L-LTF are had, since required duration should be transmitted comprising subsequent 802.11ax PPDU in L-SIG,In this way for not supporting the website of 802.11ax function to can parse the time that the domain L-SIG obtains transmission PPDU in BSS, in turnThe NAV of oneself can be set according to the time, so as to enter dormant state in 802.11ax PPDU transmission, reach power savingPurpose.
It should also be understood that in embodiments of the present invention, the interframe space IFS that website sends PPDU is less than short interFrameGapSIFS.Such as SIFS when a length of 10us, then the duration of IFS can be 5us.
Specifically, those are not listened to the website for not supporting 802.11ax function of trigger frame, in order to avoidInterference of these websites to 802.11ax PPDU entire data communication can define IFS (inter- in the embodiment of the present inventionFrame space) substitute existing SIFS (short inter-frame space), and IFS is set less than SIFS.ThisThese do not support the website of 802.11ax function can not be robbed in 802.11ax PPDU to account for channel with sample, avoid other websitesThe interference of (not supporting the website of 802.11ax function), ensure that the communication of 802.11ax PPDU.
It should also be understood that the data subdomain in PPDU of the embodiment of the present invention may include MAC header part, and the 6 of MAC header partA bit is used to indicate the type of PPDU.
In other words indicate that work does not include having backward compatibility function below 20MHZ channel width with 6 bitsShort Training subdomain L-STF, the long training subdomain L-LTF with backward compatibility function and the signal field with backward compatibility functionThe PPDU of subdomain L-SIG.
For example, as shown in table 1, the type (Type) and subtype of MAC header part can be used in the embodiment of the present invention(Subtype) B3, B2, B7, B6, B5 and B4 in domain, 6 bits indicate the type of the PPDU, such as use " 101101 " tableShow the type of the PPDU, wherein types value B3 B2 is 10, and type specification (Type description) is data (Data), sonTypes value B7 B6 B5 B4 is 1101, and subtype specification (Subtype description) is efficient data (HE-data).
Above in conjunction with the method that the transmission of the data in the embodiment of the present invention is described in detail in Fig. 1 to Fig. 5, below with reference to figureThe equipment of the data transmission of 6 and Fig. 7 the present invention is described in detail embodiment.
Fig. 6 is the equipment schematic block diagram of data transmission according to an embodiment of the invention.Equipment 600 shown in fig. 6 canThink website, it should be appreciated that equipment 600 shown in fig. 6 is corresponding with Fig. 1, and equipment 600 can be realized in Fig. 1 embodiment of the methodEach process.The concrete function of equipment 600 can be found in each process in Fig. 1 embodiment of the method, to avoid repeating, herein no longerIt repeats.
Equipment 600 as shown in FIG. 6 includes: generation unit 610 and transmission unit 620.
Specifically, generation unit 610 carries the channel strip of PPDU for generating physical layer protocol data unit frame PPDUWidth is less than 20MHZ, and it does not include after having to simultaneous that wherein PPDU, which includes M efficiently Short Training subdomain HE-STF and data subdomains,Hold the Short Training subdomain L-STF of function, the long training subdomain L-LTF with backward compatibility function and with backward compatibility functionSignal field subdomain L-SIG；
Transmission unit 620 is for sending PPDU.
Therefore, because the PPDU in the embodiment of the present invention do not include the Short Training subdomain L-STF with backward compatibility function,Long training subdomain L-LTF with backward compatibility function and the signal field subdomain L-SIG physical layer with backward compatibility functionProtocol data unit frame PPDU, reduces the bit number of PPDU, and then saves the frequency spectrum resource for transmitting the PPDU, improves frequencyCompose utilization rate.
Optionally, as another embodiment, M is greater than or equal to 2.
Optionally, as another embodiment, PPDU further includes efficient long training subdomain HE-LTF.
Optionally, as another embodiment, PPDU further includes efficient signal field subdomain HE-SIG.
Optionally, as another embodiment, equipment 600 can also include: receiving unit.
Specifically, receiving unit is used for before generation unit 610 generates physical layer protocol data unit frame PPDU, is connectIt receives sub-channel resource and distributes trigger frame, sub-channel resource distributes trigger frame and generates PPDU for triggering, sub-channel resource distribution touchingHair frame includes the Short Training subdomain L-STF with backward compatibility function, the long training subdomain L-LTF with backward compatibility functionAnd the signal field subdomain L-SIG with backward compatibility function, the channel width of carrying sub-channel resource distribution trigger frame are20MHZ, 40MHZ, 80MHZ or 160MHZ.
Fig. 7 is the equipment schematic block diagram of data transmission according to another embodiment of the present invention.Equipment 700 shown in Fig. 7 canThink access point, it should be appreciated that equipment 700 shown in Fig. 7 is corresponding with Fig. 5, and equipment 700 can be realized in Fig. 5 embodiment of the methodEach process.The concrete function of equipment 700 can be found in each process in Fig. 5 embodiment of the method, to avoid repeating, hereinIt repeats no more.
Equipment 700 as shown in Figure 7 includes: transmission unit 710 and receiving unit 720.
Specifically, transmission unit 710 distributes trigger frame and uses for sending sub-channel resource distribution trigger frame, sub-channel resourcePhysical layer protocol data unit frame PPDU is generated in triggering；
Receiving unit 720 distributes the PPDU that trigger frame is sent according to sub-channel resource for receiving station, carries PPDU'sChannel width is less than 20MHZ, and it does not include having that wherein PPDU, which includes M efficiently Short Training subdomain HE-STF and data subdomains,The Short Training subdomain L-STF of backward compatibility function, the length with backward compatibility function train subdomain L-LTF and have backward compatibilityThe signal field subdomain L-SIG of function.
Therefore, the PPDU in the embodiment of the present invention can work under channel of the bandwidth less than 20MHz, and due to this hairPPDU in bright embodiment does not include the Short Training subdomain L-STF with backward compatibility function, the length with backward compatibility functionThe training subdomain L-LTF and signal field subdomain L-SIG physical layer protocol data unit frame PPDU with backward compatibility function, subtractsLack the bit number of PPDU, and then saved the frequency spectrum resource for transmitting the PPDU, improves the availability of frequency spectrum.
Optionally, as another embodiment, M is greater than or equal to 2.
Optionally, as another embodiment, PPDU further includes efficient long training subdomain HE-LTF.
Optionally, as another embodiment, PPDU further includes efficient signal field subdomain HE-SIG.
Optionally, as another embodiment, it includes having the short training of backward compatibility function that sub-channel resource, which distributes trigger frame,Practice subdomain L-STF, the long training subdomain L-LTF with backward compatibility function and the signal field subdomain with backward compatibility functionThe channel width of L-SIG, carrying sub-channel resource distribution trigger frame are 20MHZ, 40MHZ, 80MHZ or 160MHZ.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodimentA particular feature, structure, or characteristic is included at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction" in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific features, knotStructure or characteristic can combine in any suitable manner in one or more embodiments.It should be understood that in various implementations of the inventionIn example, magnitude of the sequence numbers of the above procedures are not meant that the order of the execution order, the execution sequence Ying Yiqi function of each processIt can determine that the implementation process of the embodiments of the invention shall not be constituted with any limitation with internal logic.
In addition, the terms " system " and " network " are often used interchangeably herein.The terms " and/Or ", only a kind of incidence relation for describing affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, it can be with tableShow: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, character "/" herein, typicallys represent front and backAffiliated partner is a kind of relationship of "or".
It should be understood that in embodiments of the present invention, " B corresponding with A " indicates that B is associated with A, B can be determined according to A.ButIt should also be understood that determining that B is not meant to determine B only according to A according to A, B can also be determined according to A and/or other information.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosureMember and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardwareWith the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.ThisA little functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.SpeciallyIndustry technical staff can use different methods to achieve the described function each specific application, but this realization is notIt is considered as beyond the scope of this invention.
It is apparent to those skilled in the art that for convenience of description and succinctly, foregoing description isThe specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be withIt realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit,Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be withIn conjunction with or be desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussedMutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit or logicalLetter connection is also possible to electricity, mechanical or other form connections.
Unit may or may not be physically separated as illustrated by the separation member, shown as a unitComponent may or may not be physical unit, it can and it is in one place, or may be distributed over multiple networksOn unit.It can select some or all of unit therein according to the actual needs to realize the mesh of the embodiment of the present invention's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unitIt is that each unit physically exists alone, is also possible to two or more units and is integrated in one unit.It is above-mentioned integratedUnit both can take the form of hardware realization, can also realize in the form of software functional units.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can be withIt is realized with hardware realization or firmware realization or their combination mode.It when implemented in software, can be by above-mentioned functionStorage in computer-readable medium or as on computer-readable medium one or more instructions or code transmitted.MeterCalculation machine readable medium includes computer storage media and communication media, and wherein communication media includes convenient for from a place to anotherAny medium of a place transmission computer program.Storage medium can be any usable medium that computer can access.WithFor this but be not limited to: computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disc storages, diskStorage medium or other magnetic storage apparatus or can be used in carry or store have instruction or data structure form expectationProgram code and can be by any other medium of computer access.Furthermore.Any connection appropriate can become computerReadable medium.For example, if software is using coaxial cable, optical fiber cable, twisted pair, Digital Subscriber Line (DSL) or such asThe wireless technology of infrared ray, radio and microwave etc is transmitted from website, server or other remote sources, then coaxial electricalThe wireless technology of cable, optical fiber cable, twisted pair, DSL or such as infrared ray, wireless and microwave etc includes in affiliated mediumIn fixing.As used in the present invention, disk (Disk) and dish (disc) include compression optical disc (CD), laser disc, optical disc, numberGeneral optical disc (DVD), floppy disk and Blu-ray Disc, the usually magnetic replicate data of which disk, and dish is then with laser come optical multipleData processed.Combination above should also be as including within the protection scope of computer-readable medium.
In short, being not intended to limit of the invention the foregoing is merely the preferred embodiment of technical solution of the present inventionProtection scope.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included inWithin protection scope of the present invention.