CN106534017A

CN106534017A - Signal processing method, sending station and receiving station

Info

Publication number: CN106534017A
Application number: CN201510574936.XA
Authority: CN
Inventors: 颜敏; 吴涛
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-09-10
Filing date: 2015-09-10
Publication date: 2017-03-22
Anticipated expiration: 2035-09-10
Also published as: WO2017041585A9; CN106534017B; WO2017041585A1

Abstract

The embodiment of the invention discloses a signal processing method, a sending station and a receiving station. The method comprises the steps that the sending station obtains a target signal for indicating a signal transmission feature and a standard category for packaging the target signal, wherein the standard category comprises a first standard or a second standard; if the standard category is the first standard, the sending station carries out a negation operation on the target signal; the sending station packages the target signal after the negation operation into a preset field of a first standard frame and obtains the first standard frame with a negation feature; and the sending station sends the first standard frame with the negation feature. Through adoption of the method and the stations, the receiving station can identify two standard frames.

Description

A kind of signal processing method, transmitting station and receiving station

Technical field

The present invention relates to signal processing technology field, more particularly to a kind of signal processing method, transmitting station and Receiving station.

Background technology

It is in 60G high-frequency wireless local areas (Wireless Local Area Network, WIFI), existing Standard is mainly 802.11ad.The flank speed that the standard is supported at present is 6.7Gbps, in order to meet more at a high speed Rate requires, needs to introduce new technology and standard, for example, introduced newly at present in 802.11ad standard bases Standard 802.11ay.The introduction of new standard, needs to meet backwards compatibility, and backwards compatibility mainly includes at 2 points： 1. the corresponding equipment of new standard can not only access the equipment of 802.11ad, 2. also existing equipment will not be produced simultaneously Raw interference.When in actual WIFI systems for the equipment sending data of new standard 802.11ay is supported, according to 802.11ay standards are encapsulated data as 802.11ay frames, and for the equipment for supporting new standard 802.11ay is connecing When receiving data, then need to carry out automatic identification to 802.11ay frames and 802.11ad frames, if 802.11ad frames, Then the frame structure is parsed according to 802.11ad standards, if 802.11ay frames, then parse according to 802.11ay standards The frame structure, so that reach the equipment that can either access 802.11ad, and the not equipment to existing 802.11ad Interfere.

Different from traditional 802.11a, 802.11n and 802.11ac standard, in 802.11ad and 802.11ay, Data transfer mainly has two kinds of physical transfer modes, and one kind is single carrier (single carrier, SC) physics Transmission means, one kind be OFDM (Orthogonal Frequency Division Multiplexing, OFDM) physical transfer mode.In SC physical transfers, the Header indication signals employing of 802.11ad It is the modulation system of pi/2-BPSK, as long as the Header indication signals of 802.11ay are using different from 802.11ad Modulation system, it is possible to be identified using original frame recognition method, is the Header after judging modulation The energy of indication signal is in the real axis of planisphere and the regularity of distribution of the imaginary axis so as to identifying frame category.But In OFDM physical transfers, the modulation system adopted by 802.11ad is modulated for QPSK, and has continued to use multicarrier Modulation (dual carrier modulation, D CM) mechanism, is the Header indication signals after modulation Energy is in disorder, no rule in the distribution of planisphere, and same 802.11ay is in OFDM physical transfers Also D CM mechanism has been continued to use.Thus cannot be carried out not using its different modulation system using prior art Difference at same frame.Therefore need to go to solve using a kind of more efficient way in OFDM physical transfer systems The problem of frame identification.

The content of the invention

The embodiment of the present invention provides a kind of signal processing method, transmitting station and receiving station, can pass through In OFDM physical transfer systems, inversion operation of the transmitting station to echo signal in a kind of standard frame, realizes connecing Receive identification of the website to two kinds of standard frames.

Embodiment of the present invention first aspect provides a kind of signal processing method, is applied to OFDM In OFDM physical transfer systems, it may include：

Transmitting station obtains for the echo signal of indication signal transmission characteristic and the echo signal is carried out The standard category of encapsulation, the standard category include the first standard or the second standard；

If the standard category is the first standard, the transmitting station carries out inversion operation to the echo signal；

The transmitting station is encapsulated into the default of the first standard frame by the echo signal after inversion operation is carried out In field, obtain with first standard frame for negating feature；

The transmitting station sends first standard frame for having and negating feature.

Based in a first aspect, in the first feasible embodiment of first aspect, first standard is 802.11ay standards, second standard are 802.11ad standards；

The preset field of first standard frame is EDMG-Header fields.

Embodiment of the present invention second aspect provides a kind of signal processing method, is applied to OFDM physical transfers system In system, including：

Receiving station receives target frame, and intercepts the aiming field of predeterminated position in the target frame；

The receiving station is processed to the signal that the aiming field is carried, and is judged according to result Whether there is in the aiming field and negate feature；

If presence negates feature, the receiving station determines that the target frame is the first standard frame；

If do not exist negating feature, the receiving station determines that the target frame is the second standard frame.

Based on second aspect, in second aspect in the first feasible embodiment, first standard frame is Support that echo signal is carried out negating post package by the transmitting station of the first standard and enter the default of first standard frame Frame structure formed in field；

The preset field of first standard frame includes three data cells, in three data cells The encapsulation of preset data unit carries out the echo signal of the inverted, and other two data cells encapsulate institute respectively State echo signal.

The first feasible embodiment based on second aspect, in second feasible embodiment of second aspect In, the receiving station is processed to the signal that the aiming field is carried, and is judged according to result Whether there is in the aiming field and negate feature, including：

The receiving station according to preset length, by the aiming field be divided into the first data cell, second Data cell and the 3rd data cell；

Position of the receiving station according to the preset data unit, from first data cell, described Two data cells are selected to carry out signal combined treatment in second data cell and the 3rd data cell, Obtain process signal；

The receiving station determines that the aiming field whether there is and negates feature according to the process signal.

In based on second feasible embodiment of second aspect, the third feasible embodiment party in second aspect In formula, position of the receiving station according to the preset data unit, from first data cell, institute Two data cells are selected to carry out at signal combination in stating the second data cell and the 3rd data cell Reason, obtains process signal；Including：

The receiving station is from first data cell, second data cell and the 3rd data Two data cells, selected described two data cells are selected to include and the preset data list in unit The corresponding data cell in position of unit；

The signal that described two data cells are carried by the receiving station carries out fast Fourier transform process, Obtain process signal.

The third feasible embodiment based on second aspect, in the 4th kind of feasible embodiment of second aspect In, the receiving station determines that the aiming field whether there is and negates feature according to the process signal, Including：

The receiving station calculates the energy of the odd subcarriers of the process signal and even subcarriers respectively Energy；

If the energy of the even subcarriers is more than predetermined threshold value with the difference of the energy of the odd subcarriers, The receiving station determines that the aiming field is present and negates feature.

In based on second feasible embodiment of second aspect, in the 5th kind of feasible embodiment party of second aspect In formula, position of the receiving station according to the preset data unit, from first data cell, institute Two data cells are selected to carry out at signal combination in stating the second data cell and the 3rd data cell Reason, obtains process signal；Including：

The receiving station is from first data cell, second data cell and the 3rd data Two first object data cells, the first object data cell are selected to include and the present count in unit According to the corresponding data cell in the position of unit；

The receiving station is from first data cell, second data cell and the 3rd data Two the second target data units, second target data unit are selected not to include default with described in unit The corresponding data cell in position of data cell；

The Signal averaging that described two first object data cells are carried by the receiving station, obtains at first Reason signal；

The Signal averaging that described two second target data units are carried by the receiving station, obtains at second Reason signal.

Based on the 5th kind of feasible embodiment of second aspect, in the 6th kind of feasible embodiment of second aspect In, the receiving station determines that the aiming field whether there is and negates feature according to the process signal, Including：

If the ratio between first process signal and the second processing signal is less than predetermined threshold value, institute State receiving station and determine that the aiming field presence negates feature.

Third aspect present invention provides a kind of transmitting station, is applied to orthogonal frequency division multiplex OFDM physical transfer In system, including：

Acquiring unit, for obtaining for the echo signal of indication signal transmission characteristic and the target being believed Number standard category being packaged, the standard category include the first standard or the second standard；

Processing unit, if being the first standard for the standard category, carries out negating behaviour to the echo signal Make；

The processing unit is additionally operable to carry out the echo signal after inversion operation be encapsulated into the first standard frame Preset field in, obtain with negating first standard frame of feature；

Transmit-Receive Unit, it is described with first standard frame for negating feature for sending.

Based on the third aspect, in the first feasible embodiment of the third aspect, first standard is 802.11ay standards, second standard are 802.11ad standards；

The preset field of first standard frame is EDMG-Header fields.

Fourth aspect present invention provides a kind of receiving station, is applied to orthogonal frequency division multiplex OFDM physical transfer In system, including：

Transmit-Receive Unit, for receiving target frame；

Processing unit, for intercepting the aiming field of predeterminated position in the target frame；And to the target Field carry signal processed, and according to result judge in the aiming field whether there is negate Feature；

If the processing unit is additionally operable to exist negates feature, it is determined that the target frame is the first standard frame； If not existing and negating feature, it is determined that the target frame is the second standard frame.

Based on fourth aspect, in fourth aspect in the first feasible embodiment, first standard frame is Support that echo signal is carried out negating post package by the transmitting station of the first standard and enter the default of first standard frame Frame structure formed in field；

The first feasible embodiment based on fourth aspect, in second feasible embodiment of fourth aspect In, the processing unit is processed to the signal that the aiming field is carried, and is judged according to result Specifically include with the presence or absence of negating feature in the aiming field：

The processing unit according to preset length, by the aiming field be divided into the first data cell, second Data cell and the 3rd data cell；

Position of the processing unit according to the preset data unit, from first data cell, described Two data cells are selected to carry out signal combined treatment in second data cell and the 3rd data cell, Obtain process signal；

The processing unit determines that the aiming field whether there is and negates feature according to the process signal.

In based on second feasible embodiment of fourth aspect, the third feasible embodiment party in fourth aspect In formula, position of the processing unit according to the preset data unit, from first data cell, institute Two data cells are selected to carry out at signal combination in stating the second data cell and the 3rd data cell Reason, obtains process signal and specifically includes：

The processing unit is from first data cell, second data cell and the 3rd data Two data cells, selected described two data cells are selected to include and the preset data list in unit The corresponding data cell in position of unit；

The signal that described two data cells are carried by the processing unit carries out fast Fourier transform process, Obtain process signal.

The third feasible embodiment based on fourth aspect, in the 4th kind of feasible embodiment of fourth aspect In, according to the process signal, the processing unit determines that the aiming field has with the presence or absence of feature is negated Body includes：

The processing unit calculates the energy of the odd subcarriers of the process signal and even subcarriers respectively Energy；

If the energy of the even subcarriers is more than predetermined threshold value with the difference of the energy of the odd subcarriers, The processing unit determines that the aiming field is present and negates feature.

In based on second feasible embodiment of fourth aspect, in the 5th kind of feasible embodiment party of fourth aspect In formula, position of the processing unit according to the preset data unit, from first data cell, institute Two data cells are selected to carry out at signal combination in stating the second data cell and the 3rd data cell Reason, obtains process signal and specifically includes：

The processing unit is from first data cell, second data cell and the 3rd data Two first object data cells, the first object data cell are selected to include and the present count in unit According to the corresponding data cell in the position of unit；

The processing unit is from first data cell, second data cell and the 3rd data Two the second target data units, second target data unit are selected not to include default with described in unit The corresponding data cell in position of data cell；

The Signal averaging that described two first object data cells are carried by the processing unit, obtains at first Reason signal；

The Signal averaging that described two second target data units are carried by the processing unit, obtains at second Reason signal.

Based on the 5th kind of feasible embodiment of fourth aspect, in the 6th kind of feasible embodiment of fourth aspect In, according to the process signal, the processing unit determines that the aiming field has with the presence or absence of feature is negated Body includes：

If the ratio between first process signal and the second processing signal is less than predetermined threshold value, institute State processing unit and determine that the aiming field presence negates feature.

In the embodiment of the present invention, in OFDM physical transfer systems, transmitting station obtain echo signal and The standard category being packaged to echo signal, if standard category is the first standard, takes to echo signal Inverse operations, the echo signal carried out after inversion operation is encapsulated in the preset field of the first standard frame, is obtained With the first standard frame for negating feature, transmitting station sends first standard frame, so that receiving station is received Target frame, and the aiming field of predeterminated position in target frame is intercepted, at the signal carried to aiming field Reason, and judged with the presence or absence of feature is negated in aiming field, if exist negating feature according to result, Determine that target frame is the first standard frame, if do not exist negating feature, it is determined that target frame is the second standard frame. This mode can realize receiving station by inversion operation of the transmitting station to echo signal in the first standard frame Identification o'clock to two kinds of standard frames.

Description of the drawings

For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to institute in embodiment description The accompanying drawing that needs are used is briefly described, it should be apparent that, drawings in the following description are the one of the present invention A little embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, also Other accompanying drawings can be obtained according to these accompanying drawings.

Fig. 1 is the system schematic of WLAN deployment scene provided in an embodiment of the present invention；

Fig. 2 is a kind of schematic flow sheet of signal processing method provided in an embodiment of the present invention；

Fig. 3 is the schematic flow sheet of another kind of signal processing method provided in an embodiment of the present invention；

Fig. 4 is the schematic flow sheet of another signal processing method provided in an embodiment of the present invention；

Fig. 5 is the schematic flow sheet of another signal processing method provided in an embodiment of the present invention；

Fig. 6 is the schematic flow sheet of another signal processing method provided in an embodiment of the present invention；

Fig. 7 is a kind of structural representation of 802.11ad frames provided in an embodiment of the present invention；

Fig. 8 is a kind of structural representation of 802.11ay frames provided in an embodiment of the present invention；

Fig. 9 is EDMG-header process block diagrams in 802.11ay provided in an embodiment of the present invention；

Figure 10 is EDMG-header signal detection flow charts in 802.11ay provided in an embodiment of the present invention；

Figure 11 is another kind EDMG-header signal detection streams in 802.11ay provided in an embodiment of the present invention Cheng Tu；

Figure 12 is a kind of structural representation of transmitting station provided in an embodiment of the present invention；

Figure 13 is a kind of structural representation of receiving station provided in an embodiment of the present invention；

Figure 14 is the structural representation of another kind of transmitting station provided in an embodiment of the present invention；

Figure 15 is the structural representation of another kind of receiving station provided in an embodiment of the present invention.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly Chu, it is fully described by, it is clear that described embodiment is a part of embodiment of the invention, rather than all Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative labor The every other embodiment obtained under the premise of dynamic, belongs to the scope of protection of the invention.

The signal processing method of the embodiment of the present invention is can apply in the network for support 802.11ay consensus standards. Can both include supporting the equipment of existing standard 802.11ad in the network for supporting 802.11ay consensus standards, Can also include supporting that the equipment of new introduction standard 802.11ay, new standard 802.11ay of introducing meet backward simultaneous Capacitive, is frame structure that the new equipment for introducing standard 802.11ay can not only parse 802.11ad consensus standards, Interference will not be produced to original equipment also.The signal processing method of embodiment of the present invention transmitting station can be answered For signal processing during 802.11ay equipment sending datas；The signal processing of embodiment of the present invention receiving station When method can apply to 802.11ay equipment receiving datas, to 802.11ad frame structures and 802.11ay in network The identification of frame structure, so that 802.11ay equipment meets backwards compatibility；802.11ay equipment both can be with It is the access point (Access Point, AP) in wlan network, or the end in wlan network End station point.

As shown in figure 1, for the system schematic of a typical WLAN deployment scene, including an AP With multiple site STAs, access point communicated with site STA 1, STA2 and STA3 respectively.At this In network, AP is 802.11ad equipment, or is 802.11ay equipment；STA is 802.11ad equipment, Or be 802.11ay equipment.During 802.11ay equipment sending datas, data are sealed according to 802.11ay standards Fill as 802.11ay frames, in embodiments of the present invention, in order that receiving station can recognize 802.11ad frames With 802.11ay frames, during 802.11ay equipment sending datas in addition to encapsulating data as 802.11ay frames, go back Need to be used for the signal of the echo signal according to the transmitting station of the embodiment of the present invention of indication signal transmission characteristic Processing method is processed.During 802.11ad equipment sending datas, encapsulate data according to 802.11ad standards For 802.11ad frames.802.11ad equipment, can be according to existing when the data that 802.11ad equipment sends are received There is 802.11ad standards parsing frame structure in technical standard；802.11ad equipment is receiving 802.11ay equipment During the data of transmission, due to 802.11ad equipment None- identified 802.11ay equipment, therefore which can not recognize The 802.11ay frames that 802.11ay equipment sends, automatically in a dormant state.802.11ay equipment is being received During target frame, can be using the signal processing method of embodiment of the present invention receiving station automatically to the target frame Frame category is identified, if target frame is 802.11ad frames, according to the parsing of 802.11ad in prior art Mode parses the target frame；If target frame is 802.11ay frames, parse according to the analysis mode of 802.11ay The target frame.

Transmitting station in the embodiment of the present invention can be the AP of support 802.11ay in network shown in Fig. 1, Can be the STA of support 802.11ay in network, receiving station can be support in network shown in Fig. 1 The AP of 802.11ay, or the STA of 802.11ay is supported in network.

Below in conjunction with accompanying drawing 2 to accompanying drawing 11, signal processing method provided in an embodiment of the present invention is situated between Continue and illustrate.

Fig. 2 is refer to, a kind of schematic flow sheet of the signal processing method provided for inventive embodiments；Such as Fig. 2 Shown, the signal processing method includes：

S200, transmitting station are obtained for the echo signal of indication signal transmission characteristic and the target are believed Number standard category being packaged, the standard category include the first standard or the second standard；

In the embodiment of the present invention, transmitting station can be AP, or STA, and transmitting station is obtained to be used for The echo signal of indication signal transmission characteristic, the echo signal can be such that receiving station is carried out according to echo signal Signal detection.Transmitting station obtains echo signal and the standard category being packaged to echo signal, standard Classification includes the first standard or the second standard.Concrete optional, the first standard can be 802.11ay standards, Second standard can be 802.11ad standards.

If it should be noted that transmitting station be 802.11ad equipment, the envelope is packaged by echo signal Dress classification is 802.11ad standards, if transmitting station is 802.11ay equipment, echo signal is packaged Encapsulation classification be 802.11ay standards.

S201, if the standard category is the first standard, the transmitting station is taken to the echo signal Inverse operations；

In the embodiment of the present invention, if the encapsulation classification being packaged to echo signal is the first standard, send Website carries out inversion operation to echo signal, and the first standard can be 802.11ay standards, be 802.11ay Equipment needs to carry out echo signal inversion operation when echo signal is packaged, and 802.11ad equipment exists When being packaged to echo signal, it is not necessary to carry out inversion operation to echo signal.

It is concrete optional, echo signal can be entered while transmitting station carries out inversion operation to echo signal Capable other operations, as shown in figure 9, be the operation that transmitting station is carried out to the echo signal being input into, first 64bit echo signals to being input into carry out zero padding operation, then carry out to carrying out the echo signal after zero padding operation Coding, as illustrated, the signal after coding passes through three kinds of different signal processing modes respectively, it is assumed that coding Signal afterwards is a, then the first signal processing mode is that the signal a after coding is punched (is to remove The redundancy in signal a after coding), obtain signal c1；After second signal processing mode will be for encoding first Signal a punched that (its hole knockout is identical with the punching in the first signal processing mode, therefore beats The signal exported behind hole is identical with c1), then the signal after punching and known array 1 are carried out into XOR, and it is right Signal after XOR carries out inversion operation, obtains signal-c2；The third signal processing mode is for first by coding Signal a afterwards punched (its hole knockout is identical with the punching in the first signal processing mode, therefore The signal exported after punching is identical with c1), then the signal after punching and known array 2 are carried out into XOR, obtain Obtain signal c3.Echo signal be can be seen that from above-mentioned three kinds of different signal processing modes and be encapsulated into letter respectively In number c1 ,-c2 and c3.Signal c1 ,-c2 and c3 separately constitute three data cells, wherein, the - c2 in two data cells is encapsulated and is carried out echo signal of the inverted.By three data cells (c1 ,-c2, C3) carry out DCM modulation.

S202, the transmitting station are encapsulated into the first standard frame by the echo signal after inversion operation is carried out Preset field in, obtain with negating first standard frame of feature；

In the embodiment of the present invention, the echo signal carried out after inversion operation is encapsulated into the first standard by transmitting station In the preset field of frame, obtain with the first standard frame for negating feature.First standard frame can be 802.11ay Frame, then the preset field of the first standard frame can be many gigabit head signal (Enhanced of orientation Directional Multi Gigabit Header, EDMG-Header), as shown in figure 8, being 802.11ay The frame structure schematic diagram of frame, the frame structure include following each field：Short Training domain (short training Field, STF), channel estimation (Channel estimation, CE), head signal Header, EDMG-Header And data Data.It is compared with the frame structure of 802.11ad frames in Fig. 7, in 802.11ad frame structures Including field STF, CE and Header, three fields are identical in two kinds of frame structures, 802.11ay frames Distinguish with 802.11ad frame structures, between field Header and field Data of 802.11ad frames, EDMG-Header fields are inserted, the transmission that the field is used for being described in signal in 802.11ay standards is special Property.In the embodiment of the present invention, it is the EDMG-Header fields using 802.11ay frames in receiving station In signal and 802.11ad frames Data segment signals the identification for negating distinguishing characteristicss, carrying out two kinds of frames. The describing mode that concrete recognition method is referred to Fig. 3 embodiments is identified.

Continuation is illustrated by taking above-mentioned three data cells (c1 ,-c2, c3) as an example, and 802.11ay equipment will Three data cells are encapsulated in EDMG-Header fields.

S203, the transmitting station send first standard frame for having and negating feature.

In the embodiment of the present invention, transmitting station sends this and has the first standard frame for negating feature, the first standard Frame can be 802.11ay frames, be the frame structure that 802.11ay sends encapsulation shown in Fig. 8, the frame structure Contain in EDMG-Header fields with the echo signal for negating feature.It should be noted that dispatching station Point can be the AP of support 802.11ay, or support the STA of 802.11ay.

Fig. 3 is refer to, the schematic flow sheet of another kind of signal processing method provided for inventive embodiments；As schemed Shown in 3, the signal processing method includes：

S300, receiving station receive target frame, and intercept the aiming field of predeterminated position in the target frame；

In the embodiment of the present invention, receiving station can be the AP of support 802.11ay, or support The STA of 802.11ay.When target frame is received, needs carry out frame category to the target frame to receiving station Identification, is to judge that the target frame is the first standard frame, or the second standard frame, concrete optional, and first Standard frame can be 802.11ay, and the second standard frame can be 802.11ad frames.

In specific embodiment, after receiving station receives target frame, that is, intercept the mesh of predeterminated position in target frame Marking-up section, predeterminated position can be determined according to the concrete frame packaged type of transmitting station, for example, if Receiving station is that 802.11ay and 802.11ad frames are identified, then according to 802.11ay transmitting stations be The echo signal carried in EDMG-Header fields carries out inversion operation, and corresponds to 802.11ad frame structures The Data fields of same position then do not do it is any negate process, therefore predeterminated position is Header in target frame Aiming field after field.If the target frame is 802.11ay frames, the aiming field for being intercepted is EDMG- Header fields, the echo signal in the aiming field have carried out inversion operation.If the target frame is 802.11ad Frame, the then aiming field for being intercepted are Data fields, and the signal of field carrying does not carry out inversion operation.

S301, the receiving station are processed to the signal that the aiming field is carried, and are tied according to processing Whether there is in really judging the aiming field and negate feature；

In the embodiment of the present invention, receiving station is processed to the signal that the aiming field for being intercepted is carried, root Judge to whether there is in aiming field according to result and negate feature.Continue with above-mentioned 802.11ay and 802.11ad Illustrate as a example by frame identification, due to the echo signal carried in the EDMG-Header fields of 802.11ay Carry out inversion operation, and the Data fields of 802.11ad then do not do it is any negate process, therefore receiving station is only Need to negate feature to judging that intercepted aiming field whether there is.If presence negates feature, should Target frame is 802.11ay frames, if do not exist negating feature, the target frame is 802.11ad frames.

It is concrete optional, judge that aiming field whether there is that to negate the determination methods of feature can be basis 802.11ay transmitting stations are determined to the packaged type of echo signal, embodiment as shown in Figure 2, described The EDMG-Header fields of 802.11ay frames include three data cells, preset in three data cells Data cell (being second data cell in Fig. 2 embodiments) encapsulation carries out the echo signal of the inverted, its He encapsulates the echo signal respectively at two data cells.

As a kind of optional embodiment, according to the length of preset data unit, the aiming field is divided For three data cells, then according to the packaged type of transmitting station is decapsulated to each data cell, The signal that again first data cell is carried and the signal of second data cell carrying carry out fast Fourier Conversion (Fast Fourier Transformation, FFT), due in FFT, identical signal FFT Afterwards, the energy of signal is mainly distributed on odd subcarriers, negates after symmetric signal carries out FFT, signal energy Even subcarriers are mainly distributed on, if therefore the signal that carries of first data cell and second data cell After the signal of carrying carries out FFT, signal energy is mainly distributed on even subcarriers, then illustrate first data The signal and the signal of second data cell carrying that unit is carried is to negate symmetric signal, is the target frame For 802.11ay frames, the otherwise target frame is 802.11ad frames.It should be noted that receiving station can also The signal that second data cell is carried and the signal of the 3rd data cell carrying carry out FFT, if second After the signal and the signal of the 3rd data cell carrying that individual data cell is carried carries out FFT, signal energy master Even subcarriers to be distributed in, the then signal and the 3rd data cell for illustrating second data cell carrying are taken The signal of band for negating symmetric signal, be the target frame for 802.11ay frames, the otherwise target frame is 802.11ad frame.

As another kind of optional embodiment, according to the length of preset data unit, the aiming field is drawn It is divided into three data cells, then according to the packaged type of transmitting station is decapsulated to each data cell, Again the signal that the signal that first data cell is carried is carried with second data cell is overlapped, is obtained First process signal, the signal that the signal that first data cell is carried is carried with the 3rd data cell is entered Row superposition, obtains second processing signal.If the first process signal is much smaller than second processing signal, this is illustrated Target frame is 802.11ay frames, and otherwise the target frame is 802.11ad frames.Because sending in 802.11ay equipment During 802.11ay frames, the echo signal that second data cell is carried is carried out into inversion operation, if therefore 802.11ay frames, then after the Signal averaging of the signal of first data cell carrying and second data cell carrying It is almost nil, after the Signal averaging of the signal of first data cell carrying and the 3rd data cell carrying be One higher value；If 802.11ad frames, then first data cell is carried signal and second data sheet The signal and the 3rd data cell that signal after the Signal averaging that unit carries is carried with first data cell is taken Quite, this is due to the Data fields reason of itself to signal after the Signal averaging of band.

S302, if exist negating feature, the receiving station determines that the target frame is the first standard frame；

In the embodiment of the present invention, feature is negated if detecting the target frame and existing, illustrate that the target frame is First standard frame, the first standard frame can be 802.11ay frames, because 802.11ay equipment is sending frame structure When, inversion operation has been carried out to the echo signal in EDMG-Header fields in frame structure.

S303, if do not exist negating feature, the receiving station determines that the target frame is the second standard frame.

In the embodiment of the present invention, feature is negated if detecting the target frame and not existing, illustrate the target frame For the second standard frame, the second standard frame can be 802.11ad frames, because 802.11ad equipment is sending frame knot During structure, inversion operation is not carried out to the signal in Data fields in frame structure.

Fig. 4 is refer to, the schematic flow sheet of another signal processing method provided for inventive embodiments；As schemed Shown in 4, the signal processing method includes：

S400, receiving station receive target frame, and intercept the aiming field of predeterminated position in the target frame；

Embodiment of the present invention step S400 refer to embodiment step S300 of Fig. 3, will not be described here.

S401, the receiving station according to preset length, by the aiming field be divided into the first data cell, Second data cell and the 3rd data cell；

In the embodiment of the present invention, receiving station intercept target frame predeterminated position aiming field after, according to pre- If length, aiming field is divided into into the first data cell, the second data cell and the 3rd data cell. It should be noted that as shown in Figure 10, before dividing to target frame, send out in can correspond to Fig. 9 The DCM modulation operations for seeing off a little, carry out the soft demodulation of DCM, then according to Fig. 9 to the signal in target frame In in (c1 ,-c2, c3) length of each data cell the signal in target frame after soft demodulation is divided into into three Individual data cell.

S402, position of the receiving station according to the preset data unit, from first data cell, Two data cells are selected to carry out at signal combination in second data cell and the 3rd data cell Reason, obtains process signal；

In the embodiment of the present invention, the transmitting station of the first standard of support, will when being packaged to echo signal Carry out echo signal of the inverted to be encapsulated in the preset data unit of preset field, its in the preset field What is encapsulated in its two data cell is the echo signal for not carrying out inversion operation.Therefore correspond to receiving station When the target frame to being received is analyzed, according to the position of preset data unit, from the first data cell, Select two data cells to carry out signal combined treatment in second data cell and the 3rd data cell, obtain Process signal.

As a kind of optional embodiment, if the signal carried by selected two data cells is entered Row FFT, during determining whether as the first standard frame, then selected two data cells are respectively and preset Any one data cell in the corresponding data cell in position of data cell and other two data cells, Concrete optional, if preset data unit is second data cell, selected data cell can be First data cell and the second data cell, or the second data cell and the 3rd data cell.Then The signal that selected two data cells are carried is carried out into FFT, process signal is obtained.

As another kind of optional embodiment, if by way of Signal averaging, to determine whether as the One standard frame, then need to select two first object data cells (to have one in two first object data cells Individual data cell is corresponding with the position of preset data unit), the second target data unit (two of reselection two In second target data, any one target data unit is not corresponding with the position of preset data unit).By two The signal that individual first object data cell is carried is overlapped processs, the first process signal of acquisition, by two the The signal that two target data units are carried is overlapped process, obtains second processing signal.

S403, the receiving station determine that the aiming field whether there is and negate according to the process signal Feature.

In the embodiment of the present invention, according to the process signal for being obtained, receiving station determines whether aiming field deposits Negating feature.

Concrete optional, receiving station determines that aiming field whether there is and negates feature according to process signal The method of determination can have following two optional embodiments：

In the first optional embodiment, if the signal that two selected data cells are carried is entered After row FFT, process signal is obtained, then judges whether the energy of the even subcarriers of the process signal is long-range In the energy of odd subcarriers, if, it is determined that the signal that two data cells are carried be take it is antisymmetric, It is that aiming field presence negates feature.

In second optional embodiment, if the signal that two first object data cells are carried is entered Row overlap-add procedure, obtains the first process signal, and the signal that two the second target data units are carried is folded Plus process, obtain second processing signal.Then by the first process signal compared with second processing signal, if the One process signal is much smaller than second processing signal, then illustrate signal that two data cells are carried be negate it is right Claim, be that aiming field presence negates feature.If the first process signal is suitable with second processing signal, Then illustrate that the aiming field is not present and negate feature.

S404, if exist negating feature, the receiving station determines that the target frame is the first standard frame；

S405, if do not exist negating feature, the receiving station determines that the target frame is the second standard frame.

Embodiment of the present invention step S404-S405 refer to embodiment step S302-S303 of Fig. 3, and here is not Repeat again.

In the embodiment of the present invention, in OFDM physical transfer systems, transmitting station obtain echo signal and The standard category being packaged to echo signal, if standard category is the first standard, takes to echo signal Inverse operations, the echo signal carried out after inversion operation is encapsulated in the preset field of the first standard frame, is obtained With the first standard frame for negating feature, transmitting station sends first standard frame, so that receiving station is received Target frame, and the aiming field of predeterminated position in target frame is intercepted, at the signal carried to aiming field Reason, and judged with the presence or absence of feature is negated in aiming field, if exist negating feature according to result, Determine that target frame is the first standard frame, if do not exist negating feature, it is determined that target frame is the second standard frame. This mode can realize receiving station by inversion operation of the transmitting station to echo signal in a kind of standard frame Identification o'clock to two kinds of standard frames.

Fig. 5 is refer to, the schematic flow sheet of another signal processing method provided for inventive embodiments；As schemed Shown in 5, the signal processing method includes：

S500, receiving station receive target frame, and intercept the aiming field of predeterminated position in the target frame；

S501, the receiving station according to preset length, by the aiming field be divided into the first data cell, Second data cell and the 3rd data cell；

Embodiment of the present invention step S500-S501 refer to embodiment step S400-S401 of Fig. 4, and here is not Repeat again.

S502, the receiving station is from first data cell, second data cell and described Two data cells, selected described two data cells are selected to include default with described in three data cells The corresponding data cell in position of data cell；

In the embodiment of the present invention, receiving station from the first data cell, the second data cell for being divided and Two data cells, selected two data cells are selected to include and present count in 3rd data cell According to the corresponding data cell in the position of unit.Support the equipment of the first standard when frame structure is sent in predetermined word In section, preset data unit encapsulates the echo signal for negating, therefore whether detects the target frame in receiving station For the first standard frame when, from three data cells for being divided select two data cells when, it is selected Two data cells include data cell corresponding with the position of preset data unit.

Here continue with the first standard as 802.11ay, the second standard be 802.11ad as a example by be illustrated, Figure 10 is refer to, and is divided into three data cells, corresponds to after DCM demodulation being carried out to the signal of target frame Process of the transmitting station to the signal of each data cell in Fig. 9, in Fig. 10 three data to being divided The signal of unit carries out inversely processing, but with the difference of Fig. 9 is, second data cell is taken in Figure 10 When the signal of band carries out inversely processing, inversion operation is not carried out to which.In Fig. 10, select the first data cell The signal that the signal and the second data cell carried after carrying out inversely processing is carried after carrying out inversely processing.Need explanation If the target frame is 802.11ay frames, due to being the inversely processing of Fig. 9, therefore before FFT, After three data cell inversely processings output signal llr value be it is identical with the signal value after tri- kinds of Signal codings of Fig. 9, Simply the output signal in Figure 10 after second data cell inversely processing exists and negates.

S503, the signal that described two data cells are carried by the receiving station carry out fast Fourier transform Process, obtain process signal.

In the embodiment of the present invention, the signal that selected two data cells are carried is carried out FFT by receiving station Process, obtain process signal, as shown in Figure 10, the signal carried after the first data cell is carried out inversely processing The signal carried after inversely processing is carried out with the second data cell carries out FFT, obtains process signal.

S504, the receiving station calculate the energy of the odd subcarriers of the process signal and even number respectively The energy of carrier wave；

In the embodiment of the present invention, receiving station calculates the energy and even number of the odd subcarriers of process signal respectively The energy of subcarrier.As, in FFT, after the FFT of identical signal, the energy of signal is mainly distributed on Odd subcarriers, after the signal FFT for symmetrically negating, the energy of signal is mainly distributed on even subcarriers, therefore The embodiment of the present invention mainly carries out negating the detection of feature using the characteristic of FFT.

S505, if the energy of the even subcarriers is more than default threshold with the difference of the energy of the odd subcarriers It is worth, then the receiving station determines that the aiming field presence negates feature.

In the embodiment of the present invention, if the energy of even subcarriers is more than with the difference of the energy of odd subcarriers presetting Threshold value, be after FFT energy be mainly distributed in even subcarriers, illustrate that the aiming field is present and take Anti-espionage is levied.

S506, if exist negating feature, the receiving station determines that the target frame is the first standard frame；

S507, if do not exist negating feature, the receiving station determines that the target frame is the second standard frame.

Embodiment of the present invention step S506-S507 refer to embodiment step S302-S303 of Fig. 3, and here is not Repeat again.

Fig. 6 is refer to, the schematic flow sheet of another signal processing method provided for inventive embodiments；As schemed Shown in 6, the signal processing method includes：

S600, receiving station receive target frame, and intercept the aiming field of predeterminated position in the target frame；

S601, the receiving station according to preset length, by the aiming field be divided into the first data cell, Second data cell and the 3rd data cell；

Embodiment of the present invention step S600-S601 refer to embodiment step S400-S401 of Fig. 4, and here is not Repeat again.

S602, the receiving station is from first data cell, second data cell and described In three data cells select two first object data cells, the first object data cell include with it is described The corresponding data cell in position of preset data unit；

In the embodiment of the present invention, receiving station from the first data cell, the second data cell for being divided and Two first object data cells, selected two first object data sheets is selected in 3rd data cell Unit includes data cell corresponding with the position of preset data unit.Support that the equipment of the first standard is sending During frame structure, in preset field, preset data unit encapsulates the echo signal for negating, therefore in receiving station When whether detect the target frame be the first standard frame, two first are selected from three data cells for being divided During target data unit, selected two data cells include number corresponding with the position of preset data unit According to unit.

Here continue with the first standard as 802.11ay, the second standard be 802.11ad as a example by be illustrated, Figure 11 is refer to, and is divided into three data cells, corresponds to after DCM demodulation being carried out to the signal of target frame Process of the transmitting station to the signal of each data cell in Fig. 9, in fig. 11 three data to being divided The signal of unit carries out inversely processing, but with the difference of Fig. 9 is, second data cell is taken in Figure 11 When the signal of band carries out inversely processing, inversion operation is not carried out to which.In fig. 11, select the first data cell The signal that the signal and the second data cell carried after carrying out inversely processing is carried after carrying out inversely processing.Need explanation If the target frame is 802.11ay frames, due to being the inversely processing of Fig. 9, therefore before Signal averaging, After three data cell inversely processings output signal llr value be it is identical with the signal value after tri- kinds of Signal codings of Fig. 9, Simply the output signal in Figure 11 after second data cell inversely processing exists and negates.

S603, the receiving station is from first data cell, second data cell and described Two the second target data units, second target data unit are selected not to include and institute in three data cells State the corresponding data cell in position of preset data unit；

In the embodiment of the present invention, receiving station is from the first data cell, the second data cell and the 3rd data Two the second target data units, two the second target data units are selected not to include and preset data in unit The corresponding data cell in position of unit, as shown in figure 11, selected two the second target data units point Wei not the first data cell and the 3rd data cell.

S604, the Signal averaging that described two first object data cells are carried by the receiving station are obtained First process signal；

In the embodiment of the present invention, the signal that two selected first object data cells are carried is overlapped, The first process signal is obtained, as shown in figure 11, corresponding to 802.11ay transmitting stations in Fig. 9 to echo signal Process, the signal of the first data cell, the second data cell and the 3rd data cell is carried out in Figure 11 Inversely processing, if the target frame is 802.11ay frames, the Signal averaging that two first object data cells are carried The first process signal afterwards is almost nil, because the signal of two first object data cell carryings is negated symmetrically. If the target frame is 802.11ad frames, do not possess this feature.

S605, the Signal averaging that described two second target data units are carried by the receiving station are obtained Second processing signal.

In the embodiment of the present invention, the signal that two selected the second target data units are carried is overlapped, Second processing signal is obtained, as shown in figure 11, corresponding to 802.11ay transmitting stations in Fig. 9 to echo signal Process, the signal of the first data cell, the second data cell and the 3rd data cell is carried out in Figure 11 The Signal averaging that inversely processing, the signal for then carrying the first data cell and the 3rd data cell are carried, obtains Obtain second processing signal.

S606, if the ratio between first process signal and the second processing signal is less than predetermined threshold value, Then the receiving station determines that the aiming field presence negates feature.

In the embodiment of the present invention, the first process signal and second processing signal are compared, if first is processed Ratio between signal and second processing signal is less than predetermined threshold value, then receiving station determines that aiming field is present Negate feature.Here with the first standard as 802.11ay, the second standard be 802.11ad as a example by illustrate, If as the frame is 802.11ay frames, the first process signal is almost nil, and second processing signal is larger, and If the frame is 802.11ad frames, the first process signal and second processing signal quite, therefore can be using the Ratio between one process signal and second processing signal is determining whether for 802.11ay frames.

S607, if exist negating feature, the receiving station determines that the target frame is the first standard frame；

S608, if do not exist negating feature, the receiving station determines that the target frame is the second standard frame.

Embodiment of the present invention step S607-S608 refer to embodiment step S302-S303 of Fig. 3, and here is not Repeat again.

12 to accompanying drawing 15, illustrate transmitting station provided in an embodiment of the present invention and receiving station below in conjunction with the accompanying drawings That what is put implements.

Figure 12 is refer to, is a kind of structural representation of transmitting station provided in an embodiment of the present invention, such as Figure 12 Shown, a kind of transmitting station described in the present embodiment includes：Acquiring unit 100, processing unit 101 and receipts Bill unit 102.

Acquiring unit 100, for obtaining for the echo signal of indication signal transmission characteristic and to the target The standard category that signal is packaged, the standard category include the first standard or the second standard；

In the embodiment of the present invention, transmitting station can be AP, or STA, transmitting station acquiring unit 100 obtain the echo signal for indication signal transmission characteristic, and the echo signal can make receiving station according to mesh Mark signal carries out signal detection.Transmitting station obtains echo signal and the standard being packaged to echo signal Classification, standard category include the first standard or the second standard.Concrete optional, the first standard can be 802.11ay standards, the second standard can be 802.11ad standards.

Processing unit 101, if being the first standard for the standard category, negates to the echo signal Operation；

In the embodiment of the present invention, if the encapsulation classification being packaged to echo signal is the first standard, process single Then transmitting station carries out inversion operation to echo signal for unit 101, and the first standard can be 802.11ay standards, Be 802.11ay equipment when being packaged to echo signal, need to carry out inversion operation to echo signal, 802.11ad equipment is when being packaged to echo signal, it is not necessary to carry out inversion operation to echo signal.

The processing unit 101 is additionally operable to carry out the echo signal after inversion operation be encapsulated into the first mark In the preset field of quasi- frame, obtain with first standard frame for negating feature；

In the embodiment of the present invention, transmitting station processing unit 101 will carry out the envelope of the echo signal after inversion operation Load in the preset field of the first standard frame, obtain with the first standard frame for negating feature.First standard frame Can be 802.11ay frames, then the preset field of the first standard frame can be many gigabit head signals of orientation (Enhanced Directional Multi Gigabit Header, EDMG-Header), as shown in figure 8, It is the frame structure schematic diagram of 802.11ay frames, the frame structure includes following each field：Short Training domain (short Training field, STF), channel estimation (Channel estimation, CE), head signal Header, EDMG- Header and data Data.It is compared with the frame structure of 802.11ad frames in Fig. 7,802.11ad frames knot Also field STF, CE and Header are included in structure, three fields are identical in two kinds of frame structures, 802.11ay frames are distinguished with 802.11ad frame structures, in field Header and field of 802.11ad frames Between Data, EDMG-Header fields are inserted, the field is believed in being used for being described in 802.11ay standards Number transmission characteristic.In the embodiment of the present invention, it is the EDMG- using 802.11ay frames in receiving station Signal in Header fields negates distinguishing characteristicss with the Data segment signals of 802.11ad frames, carries out two kinds The identification of frame.The describing mode that concrete recognition method is referred to Fig. 3 embodiments is identified.

Transmit-Receive Unit 102, it is described with first standard frame for negating feature for sending.

In the embodiment of the present invention, transmitting station Transmit-Receive Unit 102 sends this and has the first standard for negating feature Frame, the first standard frame can be 802.11ay frames, be the frame structure that 802.11ay sends encapsulation shown in Fig. 8, Contain with the echo signal for negating feature in the EDMG-Header fields of the frame structure.Need explanation It is that transmitting station can be the AP of support 802.11ay, or support the STA of 802.11ay.

Figure 13 is refer to, is a kind of structural representation of receiving station provided in an embodiment of the present invention, such as Figure 13 Shown, a kind of receiving station described in the present embodiment includes：Transmit-Receive Unit 200 and processing unit 201.

Transmit-Receive Unit 200, for receiving target frame；

Processing unit 201, for intercepting the aiming field of predeterminated position in the target frame；And to the mesh Marking-up section carry signal processed, and according to result judge in the aiming field whether there is take Anti-espionage is levied；

If the processing unit 201 is additionally operable to exist negates feature, the receiving station determines the target Frame is the first standard frame；

If the processing unit 201 is additionally operable to not exist negates feature, the receiving station determines the mesh Mark frame is the second standard frame.

In specific embodiment, after receiving station receives target frame, processing unit 201 is intercepted in target frame The aiming field of predeterminated position, predeterminated position can be carried out really according to the concrete frame packaged type of transmitting station It is fixed, for example, if receiving station is that 802.11ay and 802.11ad frames are identified, according to 802.11ay Transmitting station is that the echo signal carried in EDMG-Header fields carries out inversion operation, and is corresponded to The Data fields of 802.11ad frame structure same positions then do not do it is any negate process, therefore predeterminated position is mesh Aiming field in mark frame after Header fields.If the target frame is 802.11ay frames, the target for being intercepted Field is EDMG-Header fields, and the echo signal in the aiming field carried out inversion operation.If the mesh Mark frame is 802.11ad frames, then the aiming field for being intercepted is Data fields, and the signal of field carrying does not enter Row inversion operation.

Receiving station is processed to the signal that the aiming field for being intercepted is carried, and judges mesh according to result Whether there is in marking-up section and negate feature.Continue to carry out by taking the identification of above-mentioned 802.11ay and 802.11ad frames as an example Illustrate, as the echo signal carried in the EDMG-Header fields of 802.11ay carries out inversion operation, And the Data fields of 802.11ad then do not do it is any negate process, therefore receiving station only need to it is cut to judging The aiming field for taking is with the presence or absence of negating feature.If presence negates feature, the target frame is 802.11ay Frame, if do not exist negating feature, the target frame is 802.11ad frames.

Optionally, the signal that the aiming field of the processing unit 201 pairs is carried is processed, and according to Result judges to specifically include with the presence or absence of negating feature in the aiming field：

The processing unit 201 according to preset length, by the aiming field be divided into the first data cell, Second data cell and the 3rd data cell；

In the embodiment of the present invention, receiving station processes single after the aiming field for intercepting target frame predeterminated position Aiming field is divided into the first data cell, the second data cell and the according to preset length by unit 201 Three data cells.It should be noted that as shown in Figure 10, before dividing to target frame, can be right Should in Fig. 9 transmitting station DCM modulation operations, carry out the soft demodulation of DCM to the signal in target frame, Then according in Fig. 9 in (c1 ,-c2, c3) length of each data cell by target frame after soft demodulation Signal is divided into three data cells.

Position of the processing unit 201 according to the preset data unit, from first data cell, Two data cells are selected to carry out at signal combination in second data cell and the 3rd data cell Reason, obtains process signal；

In the embodiment of the present invention, the transmitting station of the first standard of support, will when being packaged to echo signal Carry out echo signal of the inverted to be encapsulated in the preset data unit of preset field, its in the preset field What is encapsulated in its two data cell is the echo signal for not carrying out inversion operation.Therefore correspond to receiving station When the target frame to being received is analyzed, position of the processing unit 201 according to preset data unit, from Two data cells are selected to carry out signal in first data cell, the second data cell and the 3rd data cell Combined treatment, obtains process signal.

As a kind of optional embodiment, position of the processing unit 201 according to the preset data unit Put, two are selected from first data cell, second data cell and the 3rd data cell Individual data cell carries out signal combined treatment, obtains process signal and specifically includes：

The processing unit 201 is from first data cell, second data cell and the described 3rd Two data cells, selected described two data cells are selected to include and the present count in data cell According to the corresponding data cell in the position of unit；

In the embodiment of the present invention, receiving station processing unit 201 from the first data cell for being divided, second Two data cells are selected in data cell and the 3rd data cell, in selected two data cells Including data cell corresponding with the position of preset data unit.Support that the equipment of the first standard is sending frame knot During structure, in preset field, preset data unit encapsulates the echo signal for negating, therefore detects in receiving station When whether the target frame is the first standard frame, two data cells are selected from three data cells for being divided When, selected two data cells include data cell corresponding with the position of preset data unit.

The processing unit 201 carries out the signal that described two data cells are carried at fast Fourier transform Reason, obtains process signal.

In the embodiment of the present invention, the letter that selected two data cells are carried by receiving station processing unit 20 FFT process number is carried out, process signal is obtained, as shown in Figure 10, the first data cell is carried out after inversely processing The signal that the signal of carrying and the second data cell are carried after carrying out inversely processing carries out FFT, obtains process signal.

Used as another kind of optional embodiment, the processing unit 201 is according to the preset data unit Position, selects from first data cell, second data cell and the 3rd data cell Two data cells carry out signal combined treatment, obtain process signal and specifically include：

The processing unit 201 is from first data cell, second data cell and the described 3rd Two first object data cells are selected in data cell, and the first object data cell includes pre- with described If the corresponding data cell in the position of data cell；

In the embodiment of the present invention, receiving station processing unit 201 from the first data cell for being divided, second Two first object data cells are selected in data cell and the 3rd data cell, this selected two the One target data unit includes data cell corresponding with the position of preset data unit.Support the first standard Equipment when frame structure is sent the preset data unit in preset field encapsulate the echo signal that negates, because This when receiving station detects whether the target frame is the first standard frame, from three data cells for being divided When selecting two first object data cells, selected two data cells include and preset data unit The corresponding data cell in position.

The processing unit 201 is from first data cell, second data cell and the described 3rd In data cell select two the second target data units, second target data unit do not include with it is described The corresponding data cell in position of preset data unit；

In the embodiment of the present invention, receiving station processing unit 201 is from the first data cell, the second data cell And the 3rd select in data cell two the second target data units, two the second target data units not to wrap Data cell corresponding with the position of preset data unit is included, as shown in figure 11, selected two the second mesh Mark data cell is respectively the first data cell and the 3rd data cell.

The Signal averaging that described two first object data cells are carried by the processing unit 201, obtains the One process signal；

In the embodiment of the present invention, two selected first object data cells are carried by processing unit 201 Signal is overlapped, and obtains the first process signal, as shown in figure 11, sends corresponding to 802.11ay in Fig. 9 Process of the website to echo signal, to the first data cell, the second data cell and the 3rd data in Figure 11 The signal of unit carries out inversely processing, if the target frame is 802.11ay frames, two first object data cells The first process signal after the Signal averaging of carrying is almost nil, because two first object data cells are carried Signal negate symmetrically.If the target frame is 802.11ad frames, do not possess this feature.

The Signal averaging that described two second target data units are carried by the processing unit 201, obtains the Two process signals.

In the embodiment of the present invention, two selected the second target data units are carried by processing unit 201 Signal is overlapped, and obtains second processing signal, as shown in figure 11, sends corresponding to 802.11ay in Fig. 9 Process of the website to echo signal, to the first data cell, the second data cell and the 3rd data in Figure 11 The signal of unit carries out inversely processing, and the signal for then carrying the first data cell and the 3rd data cell are carried Signal averaging, obtain second processing signal.

The processing unit 201 determines that the aiming field whether there is and negates spy according to the process signal Levy.

Optionally, according to the process signal, the processing unit 201 determines whether the aiming field deposits Specifically include feature is negated：

The processing unit 201 calculates the energy of the odd subcarriers of the process signal respectively and even number is carried The energy of ripple；

In the embodiment of the present invention, receiving station processing unit 201 calculates the odd subcarriers of process signal respectively Energy and even subcarriers energy.Due in FFT, the energy of signal after the FFT of identical signal Amount is mainly distributed on odd subcarriers, and after the signal FFT for symmetrically negating, the energy of signal is mainly distributed on even number Subcarrier, therefore the embodiment of the present invention mainly carries out negating the detection of feature using the characteristic of FFT.

If the energy of the even subcarriers is more than predetermined threshold value with the difference of the energy of the odd subcarriers, The processing unit 201 determines that the aiming field is present and negates feature.

If the ratio between first process signal and the second processing signal is less than predetermined threshold value, institute State processing unit 201 and determine that the aiming field presence negates feature.

In the embodiment of the present invention, the first process signal and second processing signal are compared by processing unit 201, If the ratio between the first process signal and second processing signal is less than predetermined threshold value, receiving station determines mesh The presence of marking-up section negates feature.Here with the first standard as 802.11ay, as a example by the second standard is 802.11ad Illustrate, if as the frame is 802.11ay frames, the first process signal is almost nil, second processing letter It is number larger, and if the frame is 802.11ad frames, the first process signal and second processing signal quite, therefore Can be determined whether for 802.11ay frames using the ratio between the first process signal and second processing signal.

Figure 14 is refer to, is the structural representation of another kind of transmitting station provided in an embodiment of the present invention, Figure 14 Embodiment in, transmitting station 30 includes antenna 301, transmitter 302, receiver 303, processor 304 With memorizer 305.Processor 304 controls the operation of transmitting station 30, and can be used for process signal.Storage Device 305 can include read only memory and random access memory, and provide instruction sum to processor 304 According to.Transmitter 302 and receiver 303 may be coupled to antenna 301.Each component of website 30 is by total Linear system system 306 is coupled, wherein bus system 306 in addition to including data/address bus, also including power supply Bus, controlling bus and status signal bus in addition.But for the sake of for clear explanation, will be various total in figure Line is all designated as bus system 306.For example, transmitting station 30 can be the STA or AP shown in Fig. 1.

Specifically, memorizer 305 can store the instruction for performing procedure below：

Optionally, in the embodiment of the present invention, transmitting station can be AP, or STA, transmitting station The echo signal for indication signal transmission characteristic is obtained, the echo signal can make receiving station according to target Signal carries out signal detection.Transmitting station obtains echo signal and the standard class being packaged to echo signal Not, standard category includes the first standard or the second standard.Concrete optional, the first standard can be 802.11ay Standard, the second standard can be 802.11ad standards.

Optionally, if the encapsulation classification being packaged to echo signal is the first standard, transmitting station is to mesh Mark signal carries out inversion operation, and the first standard can be 802.11ay standards, is 802.11ay equipment right When echo signal is packaged, need to carry out echo signal inversion operation, 802.11ad equipment is believing target When number being packaged, it is not necessary to carry out inversion operation to echo signal.

Optionally, the echo signal carried out after inversion operation is encapsulated into the default of the first standard frame by transmitting station In field, obtain with the first standard frame for negating feature.First standard frame can be 802.11ay frames, then The preset field of the first standard frame can be many gigabit head signal (the Enhanced Directional of orientation Multi Gigabit Header, EDMG-Header), as shown in figure 8, being the frame knot of 802.11ay frames Structure schematic diagram, the frame structure include following each field：Short Training domain (short training field, STF), Channel estimation (Channel estimation, CE), head signal Header, EDMG-Header and data Data.It is compared with the frame structure of 802.11ad frames in Fig. 7, in 802.11ad frame structures, also includes field STF, CE and Header, three fields are identical in two kinds of frame structures, 802.11ay frames and 802.11ad Frame structure is distinguished, and between field Header and field Data of 802.11ad frames, inserts EDMG- Header fields, the field are used for being described in the transmission characteristic of signal in 802.11ay standards.The present invention is implemented In example, signal in receiving station is the EDMG-Header fields using 802.11ay frames with The identification for negating distinguishing characteristicss, carrying out two kinds of frames of the Data segment signals of 802.11ad frames.Concrete identification side Formula is referred to the describing mode of Fig. 3 embodiments and is identified.

Optionally, transmitting station sends this with the first standard frame for negating feature, and the first standard frame can be 802.11ay frames, are that 802.11ay sends the frame structure encapsulated shown in Fig. 8, the EDMG- of the frame structure Contain in Header fields with the echo signal for negating feature.It should be noted that transmitting station can be with For supporting the AP of 802.11ay, or support the STA of 802.11ay.

It should be noted that first standard is 802.11ay standards, second standard is 802.11ad Standard；

The preset field of first standard frame is EDMG-Header fields.

Figure 15 is refer to, is the structural representation of another kind of receiving station provided in an embodiment of the present invention, Figure 15 Embodiment in, receiving station 40 includes antenna 401, transmitter 402, receiver 403, processor 404 With memorizer 405.Processor 404 controls the operation of receiving station 40, and can be used for process signal.Storage Device 405 can include read only memory and random access memory, and provide instruction sum to processor 404 According to.Transmitter 402 and receiver 403 may be coupled to antenna 401.Each component of receiving station 40 leads to Cross bus system 406 to be coupled, wherein bus system 406 also includes in addition to including data/address bus Power bus, controlling bus and status signal bus in addition.But for the sake of for clear explanation, will be each in figure Plant bus and be all designated as bus system 406.For example, receiving station 40 can for the STA shown in Fig. 1 or AP。

Specifically, memorizer 405 can store the instruction for performing procedure below：

Optionally, receiving station for supporting the AP of 802.11ay, or can support 802.11ay's STA.When target frame is received, needs carry out the identification of frame category to receiving station to the target frame, are to sentence The target frame of breaking is the first standard frame, or the second standard frame, and concrete optional, the first standard frame can be 802.11ay, the second standard frame can be 802.11ad frames.

Optionally, receiving station is processed to the signal that the aiming field for being intercepted is carried, and is tied according to processing Whether there is in really judging aiming field and negate feature.Continue to recognize with above-mentioned 802.11ay and 802.11ad frames As a example by illustrate, as the echo signal carried in the EDMG-Header fields of 802.11ay is taken Inverse operations, and the Data fields of 802.11ad then do not do it is any negate process, therefore receiving station only need to it is right Judge that intercepted aiming field whether there is and negate feature.If presence negates feature, the target frame For 802.11ay frames, if do not exist negating feature, the target frame is 802.11ad frames.

Optionally, feature is negated if detecting the target frame and existing, illustrate that the target frame is the first standard Frame, the first standard frame can be 802.11ay frames, because 802.11ay equipment is when frame structure is sent, to frame Echo signal in structure in EDMG-Header fields has carried out inversion operation.

Optionally, feature is negated if detecting the target frame and not existing, illustrate the target frame for the second mark Quasi- frame, the second standard frame can be 802.11ad frames, because 802.11ad equipment is when frame structure is sent, not Inversion operation is carried out to the signal in Data fields in frame structure.

It should be noted that first standard frame is the transmitting station for supporting the first standard echo signal is entered Row negates post package and enters the frame structure formed in the preset field of first standard frame；

The receiving station is processed to the signal that the aiming field is carried, and is judged according to result Whether there is in the aiming field and negate feature, including：

Optionally, receiving station intercept target frame predeterminated position aiming field after, according to preset length, Aiming field is divided into into the first data cell, the second data cell and the 3rd data cell.Need explanation , as shown in Figure 10, before dividing to target frame, can correspond to transmitting station in Fig. 9 DCM modulation operations, carry out the soft demodulation of DCM to the signal in target frame, then according in Fig. 9 (c1, - c2, c3) in the length of each data cell the signal in target frame after soft demodulation is divided into into three data sheets Unit.

Optionally, support that the transmitting station of the first standard, when being packaged to echo signal, will be negated Echo signal afterwards is encapsulated in the preset data unit of preset field, other two numbers in the preset field It is the echo signal that do not carry out inversion operation according to what is encapsulated in unit.Receiving station is therefore corresponded to being connect When the target frame of receipts is analyzed, according to the position of preset data unit, from the first data cell, the second number According to selecting two data cells to carry out signal combined treatment in unit and the 3rd data cell, obtain and process letter Number.

Position of the receiving station according to the preset data unit, from first data cell, described Two data cells are selected to carry out signal combined treatment in second data cell and the 3rd data cell, Obtain process signal；Including：

Optionally, receiving station is from the first data cell, the second data cell and the 3rd data for being divided Two data cells, selected two data cells are selected to include and preset data unit in unit The corresponding data cell in position.Support that the equipment of the first standard is preset in preset field when frame structure is sent Data cell encapsulates the echo signal for negating, therefore detects whether the target frame is the first mark in receiving station During quasi- frame, when selecting two data cells from three data cells for being divided, selected two data Unit includes data cell corresponding with the position of preset data unit.

Optionally, the signal that selected two data cells are carried is carried out FFT process by receiving station, is obtained Process signal is obtained, as shown in Figure 10, the signal carried after the first data cell is carried out inversely processing and second is counted The signal carried after inversely processing is carried out according to unit carries out FFT, obtains process signal.

Optionally, receiving station calculates energy and the even subcarriers of the odd subcarriers of process signal respectively Energy.As, in FFT, after the FFT of identical signal, the energy of signal is mainly distributed on odd number and carries Ripple, after the signal FFT for symmetrically negating, the energy of signal is mainly distributed on even subcarriers, therefore the present invention is real Applying example mainly carries out negating the detection of feature using the characteristic of FFT.

The receiving station determines the aiming field with the presence or absence of negating feature according to the process signal, Including：

Optionally, if the energy of even subcarriers is more than predetermined threshold value with the difference of the energy of odd subcarriers, i.e., It is that energy is mainly distributed in even subcarriers after FFT, illustrates that the aiming field is present and negate feature.

Optionally, the signal that selected two first object data cells are carried is overlapped, obtains the One process signal, as shown in figure 11, corresponding to place of the 802.11ay transmitting stations to echo signal in Fig. 9 Reason, carries out inverse place to the signal of the first data cell, the second data cell and the 3rd data cell in Figure 11 Reason, if the target frame is 802.11ay frames, after the Signal averaging of two first object data cell carryings First process signal is almost nil, because the signal of two first object data cell carryings is negated symmetrically.If The target frame is 802.11ad frames, then do not possess this feature.

Optionally, the signal that selected two the second target data units are carried is overlapped, obtains the Two process signals, as shown in figure 11, corresponding to process of the 802.11ay transmitting stations to echo signal in Fig. 9, Inversely processing is carried out to the signal of the first data cell, the second data cell and the 3rd data cell in Figure 11, Then the Signal averaging that the signal for the first data cell being carried and the 3rd data cell are carried, obtains at second Reason signal.

Optionally, the first process signal and second processing signal are compared, if the first process signal and the Ratio between two process signals is less than predetermined threshold value, then receiving station determines that aiming field presence negates spy Levy.Here with the first standard as 802.11ay, the second standard be 802.11ad as a example by illustrate, if due to The frame is 802.11ay frames, then the first process signal is almost nil, and second processing signal is larger, and if the frame For 802.11ad frames, then the first process signal and second processing signal are suitable, therefore can process using first Ratio between signal and second processing signal is determining whether for 802.11ay frames.

One of ordinary skill in the art will appreciate that all or part of flow process in realizing above-described embodiment method, Computer program be can be by instruct the hardware of correlation to complete, described program can be stored in a calculating In machine read/write memory medium, the program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method. Wherein, described storage medium can for magnetic disc, CD, read-only memory (Read-Only Memory, ) or random access memory (Random Access Memory, RAM) etc. ROM.

Step in present invention method can carry out order adjustment according to actual needs, merge and delete.

Module or unit in embodiment of the present invention terminal can be merged according to actual needs, divide and be deleted Subtract.

The parts such as the microcontroller of the embodiment of the present invention, can be with universal integrated circuit, such as central processing unit (Central Processing Unit, CPU), or with special IC (Application Specific Integrated Circuit, ASIC) realizing.

Above disclosed is only present pre-ferred embodiments, can not limit certainly the present invention's with this Interest field, therefore the equivalent variations made according to the claims in the present invention, still belong to the scope covered by the present invention.

Claims

1. a kind of signal processing method, is applied in orthogonal frequency division multiplex OFDM physical transfer system, and which is special Levy and be, including：

2. the method for claim 1, it is characterised in that first standard is 802.11ay standards, Second standard is 802.11ad standards；

The preset field of first standard frame is EDMG-Header fields.

3. a kind of signal processing method, is applied in OFDM physical transfer systems, it is characterised in that include：

4. method as claimed in claim 3, it is characterised in that first standard frame is marked for supporting first Echo signal is carried out negating post package and enters institute's shape in the preset field of first standard frame by accurate transmitting station Into frame structure；

5. method as claimed in claim 4, it is characterised in that the receiving station is to the aiming field The signal of carrying is processed, and is judged in the aiming field with the presence or absence of negating feature according to result, Including：

6. method as claimed in claim 5, it is characterised in that the receiving station is according to the present count According to the position of unit, from first data cell, second data cell and the 3rd data sheet Select two data cells to carry out signal combined treatment in unit, obtain process signal；Including：

7. method as claimed in claim 6, it is characterised in that the receiving station processes letter according to described Number, determine that the aiming field whether there is and negate feature, including：

8. method as claimed in claim 5, it is characterised in that the receiving station is according to the present count According to the position of unit, from first data cell, second data cell and the 3rd data sheet Select two data cells to carry out signal combined treatment in unit, obtain process signal；Including：

9. method as claimed in claim 8, it is characterised in that the receiving station processes letter according to described Number, determine that the aiming field whether there is and negate feature, including：

10. a kind of transmitting station, is applied in orthogonal frequency division multiplex OFDM physical transfer system, its feature It is, including：

11. transmitting stations as claimed in claim 10, it is characterised in that first standard is 802.11ay Standard, second standard are 802.11ad standards；

The preset field of first standard frame is EDMG-Header fields.

A kind of 12. receiving stations, are applied in orthogonal frequency division multiplex OFDM physical transfer system, its feature It is, including：

Transmit-Receive Unit, for receiving target frame；

13. receiving stations as claimed in claim 12, it is characterised in that first standard frame is support Echo signal is carried out negating the preset field that post package enters first standard frame by the transmitting station of the first standard Formed in frame structure；

14. receiving stations as claimed in claim 13, it is characterised in that the processing unit is to the mesh Marking-up section carry signal processed, and according to result judge in the aiming field whether there is take Anti-espionage is levied and is specifically included：

15. receiving stations as claimed in claim 14, it is characterised in that the processing unit is according to described The position of preset data unit, from first data cell, second data cell and the described 3rd Select two data cells to carry out signal combined treatment in data cell, obtain process signal and specifically include：

16. receiving stations as claimed in claim 15, it is characterised in that the processing unit is according to described Process signal, determines that the aiming field is specifically included with the presence or absence of negating feature：

17. receiving stations as claimed in claim 14, it is characterised in that the processing unit is according to described The position of preset data unit, from first data cell, second data cell and the described 3rd Select two data cells to carry out signal combined treatment in data cell, obtain process signal and specifically include：

18. receiving stations as claimed in claim 17, it is characterised in that the processing unit is according to described Process signal, determines that the aiming field is specifically included with the presence or absence of negating feature：