CN101714896B - communication method - Google Patents

Abstract

A method of generating a physical subframe, comprising: generating a control field including a transmitting station identification and information for calculating a network allocation vector; aggregating the control field and a data field comprising one or more consecutive subfields to form a physical subframe. The invention also discloses a device for generating the physical subframe, and a method and a device for generating the physical layer superframe.

Description

communication method

technical field

The invention belongs to the technical field of mobile communication, and in particular relates to a communication method.

Background technique

The 802.11 standard defines two forms of media access: Distributed Coordination Function (DCF) and Centralized Coordination Function (PCF). DCF is based on the Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) protocol and is mandatory. In DCF mode, 802.11 hosts will compete for access, and while sending wireless frames, other stations will not transmit. If other stations need to transmit, this station will wait until the channel is free. As a condition for accessing the medium, the Media Access Control (MAC) layer checks the value of its Network Allocation Vector (NAV), which exists in each station and is used to indicate when the previous frame needs to send this frame. NAV must be set to zero before a station attempts to send a frame. Before transmitting a frame, the station calculates how long it will take to send the frame based on the frame length and transmission rate. The station puts the value representing this time in the Duration field of the frame header. When the station receives this frame, it checks the Duration field and uses it as the basis for setting the corresponding NAV. This operation will reserve the medium for the sending site.

The realization of the virtual carrier sense mechanism in the 802.11a/n wireless LAN system is as follows:

After receiving the Physical Layer Convergence Sublayer (PLCP) Protocol Data Unit (PPDU), the user station first needs to unlock the SIGNAL field information, and then learn the modulation mode of the current data field according to the Rate or MCS information, and then demodulate the data part Get the Duration information (NAV) of the MAC header. For example, in an Aggregate MAC Service Data Unit (Aggregate MAC Service Data Unit, A-MSDU), there is only one shared MAC header, and the Durtion/ID field inside sets the NAV value. An aggregated MAC protocol data unit (Aggregate MAC Protocol Data Unit, A-MPDU) includes multiple MPDUs, that is, multiple MAC headers, and the protocol stipulates that the NAV values of multiple MAC headers are set to be consistent. Indicates that the same NAV is set for each MPDU.

However, some ultra-high-speed wireless LAN systems use sub-channel modulation, and other stations except the transmitting and receiving stations cannot know the sub-channel modulation used, so they cannot demodulate the MAC header information, and cannot obtain the Duration field Value to update NAV.

In addition, in some ultra-high-speed wireless LAN systems, when a receiving station (such as an AP) performs data interaction with multiple sending stations at the same time, even if the receiving station already knows the modulation methods used by the sending stations communicating with it, because it only It can untie the PLCP preamble and SIGNAL field information or the MCS information of HT-SIGNAL, but cannot know which sending station the current PPDU belongs to, and thus cannot demodulate the current PPDU.

Contents of the invention

In view of this, the technical problem to be solved by the present invention is to provide a communication method, so that the receiving station in the ultra-high-speed wireless local area network system can obtain the value of the Duration field to update the NAV, and enable the receiving station to know the sending station of the current PPDU, Thus, the current PPDU is demodulated.

In some optional embodiments, the communication method includes: generating a control field including a sending station identifier and information for calculating a network allocation vector; combining the control field with a data field including one or more continuous subfields Aggregate to form a physical subframe; when sending the physical subframe, modulate the control field at the physical layer.

It can be seen that when using the physical subframe for communication in the ultra-high-speed wireless local area network, the receiving station can obtain the address of the sending station at the physical layer, so the non-receiving station does not need to decode the subsequent data frame body. At the same time, it also solves the problem of NAV setting update, and compresses the overhead of the data part, and improves the transmission efficiency.

In some optional embodiments, the communication method includes: generating a long preamble (HT-LTF) field; generating a control field including a sending station identifier and information used to calculate a network allocation vector; converting the HT-LTF field to , a control field and a data field including one or more continuous subfields are aggregated to form a physical subframe; when the physical subframe is sent, the control field is modulated at a physical layer.

In some optional embodiments, the communication method includes: generating a signal (HT-SIG) field, generating a control field including a sending station identifier and information used to calculate a network allocation vector; adding the HT-SIG field, The control field and the data field including one or more continuous subfields are aggregated to form a physical subframe; when the physical subframe is sent, the control field is modulated at the physical layer.

In some optional embodiments, the communication method includes: generating an HT-LTF field and an HT-SIG field; generating a control field including a sending site identifier and information used to calculate a network allocation vector; converting the HT-LTF field, the HT-SIG field, the control field and the data field including one or more consecutive subfields are aggregated to form a physical subframe; when the physical subframe is transmitted, the control field is modulated at the physical layer.

In some optional embodiments, the communication method includes: generating a preamble field; generating a signal HT-SIG field, a data long preamble field, and an extended long preamble field; The long preamble field and the first physical subframe are aggregated to form the first subframe; the first physical subframe is generated by the following method: generating a control field including the sending site identifier and information used to calculate the network allocation vector; Fields and data fields including one or more continuous subfields are aggregated to form a first physical subframe; at least one second physical subframe is aggregated to form a second subframe; the second physical subframe is generated using one of the following methods: generating a control field including the sending site identifier and information used to calculate the network allocation vector; aggregating the control field and data fields including one or more continuous subfields to form a second physical subframe; or, generating a long preamble HT- LTF field; generating a control field including the sending site identification and information for calculating the network allocation vector; aggregating the HT-LTF field, the control field and the data field including one or more continuous subfields to form a second physical subframe or, generate a signal HT-SIG field; generate a control field including sending site identification and information for calculating a network allocation vector; combine the HT-SIG field, the control field, and the data field comprising one or more consecutive subfields Aggregate to form a second physical subframe; or, generate a long leading HT-LTF field and a signal HT-SIG field; generate a control field including a sending site identifier and information for calculating a network allocation vector; combine the HT-LTF field, The HT-SIG field, the control field and the data field including one or more continuous subfields are aggregated to form a second physical subframe; the preamble field, the first subframe and the second subframe are aggregated to form a physical layer superframe; When sending the physical layer superframe, the control field is modulated at the physical layer.

In some optional embodiments, the communication method includes: when receiving a physical subframe, unlocking the physical subframe at the physical layer to obtain network allocation vector information, address information of the sending site and its corresponding modulation mode ; Wherein, the physical subframe is formed by aggregation of a control field and a data field, the control field includes the sending site identifier and information used to calculate the network allocation vector, and the data field includes one or more continuous subfields; update The network assigns vectors and performs subsequent demodulation.

Instructions attached

Figures 1-1 and 1-2 are structural schematic diagrams of an optional physical subframe;

Figures 2-1 and 2-2 are structural schematic diagrams of another optional physical subframe;

Figures 3-1 and 3-2 are structural schematic diagrams of two optional UHT-MPDU fields;

Figures 4, 5, and 6 are structural schematic diagrams of three other optional physical subframes;

FIG. 7 is a schematic structural diagram of an optional physical layer superframe;

Figures 8, 9, 10, and 11 are schematic diagrams of four optional devices for generating physical subframes;

Fig. 12 is a schematic diagram of an optional device for generating a physical layer superframe.

detailed description

In order to enable the receiving station in the ultra-high-speed wireless LAN system to obtain the value of the Duration field to update the NAV, and enable the receiving station to know the sending station of the current PPDU, so as to demodulate the current PPDU, the existing 802.11 specification is used for reference. Based on the physical layer frame structure, a new physical layer subframe structure is proposed, as shown in Figure 1-1 and Figure 1-2.

The physical subframe includes a control field UHT-SIG and a data field UHT-A-MPDU.

The control field UHT-SIG consists of a shared MAC information (SharedMAC Info) field carrying indication/control information, a reserved (Reserved) field, a cyclic check (CRC) field and a tail (Tail) field. In the Shared MAC Info field, the Duaration/ID field places the value used to calculate the NAV, and the sending station address (TA) field places the address of the sending station.

The functions of the Reserved field, the CRC field, and the Tail field and the information carried here are the same as those in the 802.11n specification, so no repeated description is given here.

The data field UHT-A-MPDU consists of a Service field and at least one Ultra High Throughput MAC Protocol Data Unit (UHT-MPDU) field, which is used to separate each UHT-MPDU field UHT- MN, and a Tail and Pad field.

Here, the functions of the Service field and the Tail and Pad field and the information they carry are the same as those in the 802.11n specification, so repeated descriptions will not be repeated here.

Each UHT-MPDU field consists of a MAC Header field carrying MAC layer information, an MSDU and an FCS. Among them, the MAC Header field consists of frame control (FrameControl) field, Address 1 field, address 3 (Address 3) field, sequence control (SequenceControl) field, address 4 (Address 4) field, service quality control (QoS Control) field and high Throughput control (HT Control) field and so on.

Here, the MSDU, FCS, and the Frame Control field, Address1 field, Address 3 field, Sequence Control field, Address 4 field, QoS Control field, and HT Control field in the MAC Header have the same functions and carried information as the 802.11n specification, so Do not repeat the description.

Each E-MN field is composed of Reserved field, Length field, CRC field and delimiter (Delimiter) field.

Here, the roles of the Reserved field, the Length field, the CRC field, and the Delimiter field and the information they carry are the same as those in the 802.11n specification, so repeated descriptions will not be repeated here.

For the UHT-SIG structure shown in Figure 1-1, another optional UHT-A-MPDU structure is shown in Figure 3-1. Among them, the Length field is used to store the length information of the UHT-MPDU.

By comparing with the UHT-A-MPDU shown in Figure 1-2, it can be seen that in the UHT-A-MPDU shown in Figure 3-1, since there is no UHT-MN field, the physical subframe When transmitting, not only can the receiving station obtain the address of the sending station at the physical layer, but also solve the problem of NAV setting update, and can further effectively improve the transmission efficiency of the system.

Figure 2-1 and Figure 2-2 show another optional physical subframe. Compared with the physical subframe shown in Figure 1-1 and Figure 1-2, the physical subframe shown in Figure 2-1 and Figure 2-2 is different in that the Address that carries the receiving site address (RA) information 1 field is placed in the UHT-SIG field, not in the MAC Header of the UHT-MPDU field.

It can be seen that the MAC information in the MAC Header field is determined by the UHT-SIG field. The MAC layer information that has been placed in the UHT-SIG field may not be placed again in the MAC Header field, which helps to improve the transmission efficiency of the system.

When sending the physical subframe, the UHT-SIG field is modulated at a uniform low rate at the physical layer. An optional manner is to use BPSK and 1/2 code rate to modulate the UHT-SIG field. When receiving the physical subframe, the receiving station first needs to unlock the UHT-SIG at the physical layer to obtain NAV information, so that the NAV can be updated. While the receiving station unlocks the UHT-SIG, it can also obtain the address information of the sending station and its corresponding modulation mode, so that the receiving station can perform subsequent demodulation.

When using the physical subframe for communication in the ultra-high-speed wireless local area network, the receiving station can obtain the address of the sending station at the physical layer, so the non-receiving station does not need to decode the following data frame body. At the same time, it also solves the problem of NAV setting update, and compresses the overhead of the data part, and improves the transmission efficiency.

For the UHT-SIG structure shown in Figure 2-1, another optional UHT-A-MPDU structure is shown in Figure 3-1, or as shown in Figure 3-2.

Compared with the UHT-MPDU field shown in Figure 3-1, the Address 1 field is added to the UHT-MPDU field shown in Figure 3-2, which is used to store the address of the receiving site.

It should be noted that since the address of the receiving station has been placed in the RA field of UHT-SIG, the purpose of adding the address of the receiving station in the UHT-MPDU is not to let the receiving end know the destination address of the UHT-MPDU, but to This enables the receiving end to locate the UHT-MPDU more reliably.

FIG. 4 , FIG. 5 , and FIG. 6 respectively show three other optional physical subframes. Wherein, the functions of the HT-LTF field and the HT-SIG field and the information they carry are the same as those in the 802.11n specification, so no repeated description is given.

The present invention also proposes a physical layer superframe structure, as shown in FIG. 7 . The superframe consists of a preamble field, a first subframe and a second subframe.

The preamble field is composed of HT greenfield mode short preamble (HT-GF-LTF) and first long preamble (HT-LTF1), and the first subframe consists of HT-SIG field, data long preamble, extended long preamble and a physical subframe , the second subframe consists of at least one physical subframe. Wherein, the data long preamble and the extended long preamble are respectively composed of several HT-LTFs.

Here, the functions of HT-GF-LTF, HT-LTF1, data long preamble and extended long preamble and the information they carry are the same as those in the 802.11n specification, so no repeated description is given here.

Based on the foregoing physical layer subframe format, the present invention proposes a method for generating a physical subframe. The method includes: generating a control field UHT-SIG; aggregating the control field UHT-SIG and the data field UHT-A-MPDU to form a physical subframe.

Here, the function of the sending station address TA is an identification. Those skilled in the art can fully see that the way to identify the sending site is not unique, and other non-address ways can be used to identify the sending site.

Another method for generating a physical subframe includes: generating a HT-LTF; generating a control field UHT-SIG; aggregating the HT-LTF, the control field UHT-SIG and the data field UHT-A-MPDU to form a physical subframe.

Another method for generating a physical subframe includes: generating an HT-SIG; generating a control field UHT-SIG; and aggregating the HT-SIG, the control field UHT-SIG and the data field UHT-A-MPDU to form a physical subframe.

Another method of generating physical subframes includes: generating HT-LTF and HT-SIG; generating control field UHT-SIG; aggregating HT-LTF, HT-SIG, control field UHT-SIG and data field UHT-A-MPDU form a physical subframe.

The present invention also proposes a method for generating a physical layer superframe, the method comprising: generating a preamble field; generating an HT-SIG, a data long preamble field, and an extended long preamble field; The leading field and a physical subframe are aggregated to form a first subframe; one or more physical subframes are aggregated to form a second subframe; the leading field, the first subframe and the second subframe are aggregated to form a physical layer superframe .

FIG. 8 shows an apparatus for generating a physical subframe, and the apparatus includes a first unit S11 and a second unit S12.

The first unit S11 is used to generate the control field UHT-SIG; the second unit S12 is used to aggregate the control field UHT-SIG and the data field UHT-A-MPDU to form a physical subframe.

Fig. 9 shows another device for generating a physical subframe, which includes a first unit S11, a second unit S12 and a third unit S21.

The third unit S21 is used to generate the HT-LTF; the second unit S12 is used to aggregate the HT-LTF, the control field UHT-SIG and the data field UHT-A-MPDU to form a physical subframe.

Fig. 10 shows another device for generating a physical subframe, which device includes a first unit S11, a second unit S12 and a fourth unit S31.

The fourth unit S31 is used to generate the HT-SIG; the second unit S12 is used to aggregate the HT-SIG, the control field UHT-SIG and the data field UHT-A-MPDU to form a physical subframe.

Fig. 11 shows another device for generating a physical subframe, which includes a first unit S11, a second unit S12, a third unit S21 and a fourth unit S31.

The second unit S12 is used for aggregating HT-LTF, HT-SIG, control field UHT-SIG and data field UHT-A-MPDU to form a physical subframe.

FIG. 12 shows a device for generating a physical layer superframe, which includes a leading unit S41, a fifth unit S42, a first physical subframe unit S43, a first subframe unit S44, a second physical subframe unit S45, The second subframe unit S46 and the superframe unit S47.

The preamble unit S41 is used to generate the preamble field; the fifth unit S42 is used to generate the HT-SIG field, the data long preamble field and the extended long preamble field; the first physical subframe unit S43 is used to generate the first physical subframe; the first subframe The frame unit S44 is configured to aggregate the HT-SIG field, the data long preamble field, the extended long preamble field and the first physical subframe to form a first subframe.

The second physical subframe unit S45 is used to generate one or more second physical subframes; the second subframe unit S46 is used to aggregate one or more second physical subframes generated by the second physical subframe unit S45 to form a second physical subframe Two subframes; the superframe unit S47 is configured to aggregate the preamble field, the first subframe and the second subframe to form a physical layer superframe.

A better manner is that the first physical subframe unit S43 is composed of a first unit S11 and a second unit S12. An optional manner is that the second physical subframe unit S45 is composed of the first unit S11 and the second unit S12. Another optional manner is that the second physical subframe unit S45 is composed of the first unit S11, the second unit S12 and the third unit S21. Another optional manner is that the second physical subframe unit S45 is composed of the first unit S11, the second unit S12 and the fourth unit S31. Another optional manner is that the second physical subframe unit S45 is composed of the first unit S11, the second unit S12, the third unit S21 and the fourth unit S31.

Those skilled in the art can understand that the various exemplary method steps and device units described in connection with the disclosed embodiments can be realized by electronic hardware, software or a combination of both. To clearly illustrate the interchangeability of hardware and software, various exemplary steps and units have been described above generally in terms of their functionality. Whether such functionality is implemented in hardware or software depends upon the particular application and design constraints imposed by the overall system. Skilled artisans will be able to implement the described functionality in varying ways for each particular application, but the results of such implementation should not be interpreted as causing a departure from the scope of the present invention.

Utilizes general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or combinations thereof The various exemplary elements described in connection with the embodiments disclosed herein can be implemented or performed in any combination. A general-purpose processor may be a microprocessor, but in another instance, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a DSP core, or any other such architecture.

The steps of the method described in conjunction with the above-disclosed embodiments may be directly embodied as hardware, a software module executed by a processor, or a combination of both. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art. A typical storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. In an alternative example, the storage medium is an integral part of the processor. The processor and storage medium may reside in one ASIC. The ASIC may be present in a subscriber station. In an alternative example, the processor and storage medium may exist as separate components in the subscriber station.

The disclosed embodiments will enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope and spirit of the invention. The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the within the protection scope of the present invention.

Claims (52)

1. a communication means, it is characterised in that including:

Generate and include transmitting station mark and for calculating the control field of the information of network allocation vector；

By described control field and the data field polymerization formation including one or more continuous son field Reason subframe；

When sending described physical sub-frame, in physical layer, described control field is modulated.

2. the method for claim 1, it is characterised in that described control field also includes receiving Site identity.

3. method as claimed in claim 2, it is characterised in that described data field is by a business Son field, at least one superelevation is handled up Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field, and one Individual afterbody fills son field composition.

4. method as claimed in claim 3, it is characterised in that described UHT-MPDU son field by One MAC header field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence fields group Become.

5. method as claimed in claim 4, it is characterised in that described MAC header field includes length Territory, for carrying the length information of described UHT-MPDU son field.

6. method as claimed in claim 4, it is characterised in that described MAC header field includes address 1 territory, is used for carrying described receiving station mark.

7. the method as described in any one of claim 1 to 6, it is characterised in that described transmitting station It is designated the address of transmitting station.

8. the method as described in claim 2 or 6, it is characterised in that described receiving station is designated The address of receiving station.

9. a communication means, it is characterised in that including:

Generate long preambles HT-LTF field；

Generate and include transmitting station mark and for calculating the control field of the information of network allocation vector；

By described HT-LTF field, control field and the data word including one or more continuous son field Duan Juhe forms physical sub-frame；

When sending described physical sub-frame, in physical layer, described control field is modulated.

10. method as claimed in claim 9, it is characterised in that described control field also includes receiving Site identity.

11. methods as claimed in claim 10, it is characterised in that described data field is by an industry Business son field, at least one superelevation handles up Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field, and One afterbody fills son field composition.

12. methods as claimed in claim 11, it is characterised in that described UHT-MPDU son field By a MAC header field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence fields Composition.

13. methods as claimed in claim 12, it is characterised in that described MAC header field includes long Degree territory, for carrying the length information of described UHT-MPDU son field.

14. methods as claimed in claim 12, it is characterised in that described MAC header field includes ground Territory, location 1, is used for carrying described receiving station mark.

15. methods as described in any one of claim 9 to 14, it is characterised in that described dispatching station Point identification is the address of transmitting station.

16. methods as described in claim 10 or 14, it is characterised in that described receiving station identifies Address for receiving station.

17. 1 kinds of communication means, it is characterised in that including:

Generate signal HT-SIG field；

Generate and include transmitting station mark and for calculating the control field of the information of network allocation vector；

By described HT-SIG field, control field and the data word including one or more continuous son field Duan Juhe forms physical sub-frame；

When sending described physical sub-frame, it is modulated in control field described in physical layer.

18. methods as claimed in claim 17, it is characterised in that described control field also includes connecing Receive site identity.

19. methods as claimed in claim 18, it is characterised in that described data field is by an industry Business son field, at least one superelevation handles up Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field, and One afterbody fills son field composition.

20. methods as claimed in claim 19, it is characterised in that the sub-word of described UHT-MPDU Duan Youyi MAC header field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence word Duan Zucheng.

21. methods as claimed in claim 20, it is characterised in that described MAC header field includes long Degree territory, for carrying the length information of described UHT-MPDU son field.

22. methods as claimed in claim 20, it is characterised in that described MAC header field includes ground Territory, location 1, is used for carrying described receiving station mark.

23. methods as described in any one of claim 17 to 22, it is characterised in that described dispatching station Point identification is the address of transmitting station.

24. methods as described in claim 18 or 22, it is characterised in that described receiving station identifies Address for receiving station.

25. 1 kinds of communication means, it is characterised in that including:

Generate long preambles HT-LTF field and signal HT-SIG field；

Generate and include transmitting station mark and for calculating the control field of the information of network allocation vector；

By described HT-LTF field, HT-SIG field, control field with include one or more continuous son The data field polymerization of field forms physical sub-frame；

When sending described physical sub-frame, in physical layer, described control field is modulated.

26. methods as claimed in claim 25, it is characterised in that described control field also includes connecing Receive site identity.

27. methods as claimed in claim 26, it is characterised in that described data field is by an industry Business son field, at least one superelevation handles up Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field, and One afterbody fills son field composition.

28. methods as claimed in claim 27, it is characterised in that the sub-word of described UHT-MPDU Duan Youyi MAC header field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence word Duan Zucheng.

29. methods as claimed in claim 28, it is characterised in that described MAC header field includes long Degree territory, for carrying the length information of described UHT-MPDU son field.

30. methods as claimed in claim 28, it is characterised in that described MAC header field includes ground Territory, location 1, is used for carrying described receiving station mark.

31. methods as described in any one of claim 25 to 30, it is characterised in that described dispatching station Point identification is the address of transmitting station.

32. methods as claimed in claim 26, it is characterised in that described receiving station is designated and connects Receive the address of website.

33. 1 kinds of communication means, it is characterised in that including:

Generate preamble field；

Generate signal HT-SIG field, data long preambles field and extension long preambles field；

By described HT-SIG field, data long preambles field, extension long preambles field and the first physics Frame aggregation forms the first subframe；Described first physical sub-frame is adopted and is generated with the following method:

Generate and include transmitting station mark and for calculating the control field of the information of network allocation vector；

By described control field and the data field polymerization formation the that includes one or more continuous son field One physical sub-frame；

At least one second physical sub-frame polymerization is formed the second subframe；Described second physical sub-frame uses such as One of lower method generates:

Generate and include transmitting station mark and for calculating the control field of the information of network allocation vector；Will Described control field and the data field polymerization including one or more continuous son field form the second physics Frame；Or,

Generate long preambles HT-LTF field；Generation includes transmitting station mark and for calculating network allocation The control field of the information of vector；By described HT-LTF field, control field with include one or more The data field polymerization of son field forms the second physical sub-frame continuously；Or,

Generate signal HT-SIG field；Generation includes transmitting station mark and vows for calculating network allocation The control field of the information of amount；By described HT-SIG field, control field with include one or more company The data field polymerization of continuous son field forms the second physical sub-frame；Or,

Generate long preambles HT-LTF field and signal HT-SIG field；Generation includes that transmitting station identifies Control field with the information for calculating network allocation vector；By described HT-LTF field, HT-SIG Field, control field and include one or more continuous son field data field polymerization formed the second physics Subframe；

The polymerization of described preamble field, the first subframe and the second subframe is formed physical layer superframe；

When sending described physical layer superframe, in physical layer, described control field is modulated.

34. methods as claimed in claim 33, it is characterised in that described control field also includes connecing Receive site identity.

35. methods as claimed in claim 34, it is characterised in that described data field is by an industry Business son field, at least one superelevation handles up Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field, and One afterbody fills son field composition.

36. methods as claimed in claim 35, it is characterised in that the sub-word of described UHT-MPDU Duan Youyi MAC header field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence word Duan Zucheng.

37. methods as claimed in claim 36, it is characterised in that described MAC header field includes long Degree territory, for carrying the length information of described UHT-MPDU son field.

38. methods as claimed in claim 36, it is characterised in that described MAC header field includes ground Territory, location 1, is used for carrying described receiving station mark.

39. methods as described in any one of claim 33 to 38, it is characterised in that described dispatching station Point identification is the address of transmitting station.

40. methods as described in claim 34 or 38, it is characterised in that described receiving station identifies Address for receiving station.

41. 1 kinds of communication means, it is characterised in that including:

When receiving physical sub-frame, untie described physical sub-frame in physical layer, obtain network allocation vector information Address information and the modulation system of correspondence thereof with transmitting station；Wherein, described physical sub-frame is by control word Section and data field are polymerized, and described control field includes transmitting station mark and divides for calculating network Joining the information of vector, described data field includes one or more continuous son field；

Update network allocation vector and carry out subsequent demodulation.

42. methods as claimed in claim 41, it is characterised in that described control field also includes connecing Receive site identity.

43. methods as claimed in claim 42, it is characterised in that described physical sub-frame is by long preambles HT-LTF field, described control field and include one or more continuous son field data field polymerization Formed.

44. methods as claimed in claim 42, it is characterised in that described physical sub-frame is by generating letter Number HT-SIG field, described control field and include that the data field of one or more continuous son field gathers Close and formed.

45. methods as claimed in claim 42, it is characterised in that described physical sub-frame is by long preambles HT-LTF field, generate signal HT-SIG field, described control field and include one or more continuously The data field polymerization of son field is formed.

46. methods as described in any one of claim 43,44 or 45, it is characterised in that described number According to field by a business son field, at least one superelevation is handled up Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field, and an afterbody filling son field composition.

47. methods as claimed in claim 46, it is characterised in that the sub-word of described UHT-MPDU Duan Youyi MAC header field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence word Duan Zucheng.

48. methods as claimed in claim 47, it is characterised in that described MAC header field includes long Degree territory, for carrying the length information of described UHT-MPDU son field.

49. methods as claimed in claim 47, it is characterised in that described MAC header field includes ground Territory, location 1, is used for carrying described receiving station mark.

50. methods as claimed in claim 41, it is characterised in that described transmitting station is designated to be sent out See off address a little.

51. methods as claimed in claim 41, it is characterised in that described control field uses two-phase Phase-shift keying BPSK, 1/2 code check modulation.

52. methods as claimed in claim 42, it is characterised in that described receiving station is designated and connects Receive the address of website.