CN107040295A - Uplink frequency offset method of estimation, relevant device and system in MU-MIMO system - Google Patents

Uplink frequency offset method of estimation, relevant device and system in MU-MIMO system Download PDF

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Publication number
CN107040295A
CN107040295A CN201610068730.4A CN201610068730A CN107040295A CN 107040295 A CN107040295 A CN 107040295A CN 201610068730 A CN201610068730 A CN 201610068730A CN 107040295 A CN107040295 A CN 107040295A
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CN
China
Prior art keywords
website
symbol
carrier
pilot sub
symbols
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CN201610068730.4A
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Chinese (zh)
Inventor
陈特彦
刘晟
刘云
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201610068730.4A priority Critical patent/CN107040295A/en
Publication of CN107040295A publication Critical patent/CN107040295A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset

Abstract

Include the embodiment of the invention discloses uplink frequency offset method of estimation in a kind of multiuser mimo system：On K symbol the L pilot sub-carrier estimated for uplink frequency offset is distributed for M website；M website is mapped on L pilot sub-carrier of K symbol and generates mapping pattern；Wherein, K symbol is divided into K/2 symbol pair, website is identical with the mapping relations of pilot sub-carrier on two internal symbols of same symbol, the mapping relations of website and pilot sub-carrier are differed on two symbols of distinct symbols pair, and each website maps at least one symbol pair and at least one symbol to being respectively mapped to a few pilot sub-carrier in M website；Mapping pattern is sent to M website；Each self-corresponding frequency deviation value of M website is calculated to the upper corresponding upward signal of pilot sub-carrier according to each symbol of reception.The embodiment of the invention also discloses a kind of communication system.Using the present invention, the complexity for calculating uplink frequency offset is reduced.

Description

Uplink frequency offset method of estimation, relevant device and system in MU-MIMO system
Technical field
The present invention relates to uplink frequency offset in the communications field, more particularly to a kind of multiuser mimo system Method of estimation, relevant device and system.
Background technology
MIMO (Multiple Input Multiple Output, multiple-input and multiple-output, abbreviation MIMO) technology It is one of key technology of IEEE 802.11L standard agreements.In order to further improve throughput of system, IEEE 802.11ac standards introduce MU-MIMO (Multi User Multiple Input Multiple Output, it is many User's multiple-input and multiple-output, abbreviation MU-MIMO) technology, with solve link both sides AP (Access PoiLt, Access point, abbreviation AP) and website Station antenna amounts it is not reciprocity the problem of, improve WLAN and gulp down The amount of telling.
In up MU-MIMO technologies, multiple websites can be to AP simultaneous transmission data, if transmission Frequency between each website and AP of data is asynchronous, and AP is sent on sub-carriers in one website of decoding Data when, data that AP can not only be sent by the website on other subcarriers are disturbed, also can be by The interference for the data that other websites are sent on each subcarrier, the bit error rate of system can increase, it is therefore desirable to Estimate CFO (Carrier Frequency Offset, carrier frequency shift, the abbreviation between each website and AP CFO), so that AP can correct decoding data.
In current uplink frequency offset estimation scheme, each website is used on every 8 adjacent subcarriers A line in 8 × 8 orthogonal matrix P matrixes ensures the frequency domain orthogonality between each website, and AP is according to connecing The upward signal on continuous 8 subcarriers received, with reference to the phase difference of any two upward signal Obtain the CFO of some website.From such scheme as can be seen that AP is needed on every 8 continuous subcarriers CFO estimation is carried out to website using different orthogonal sequences, computation complexity is high.
The content of the invention
Technical problem to be solved of the embodiment of the present invention is that there is provided a kind of multi-user's multiple-input and multiple-output system Uplink frequency offset method of estimation, relevant device and system in system.Uplink frequency offset in the prior art can be solved and calculate multiple It is miscellaneous degree it is high the problem of.
In order to solve the above-mentioned technical problem, first aspect of the embodiment of the present invention provides a kind of multi-user's multi input Uplink frequency offset method of estimation in multiple output system, including：M website is set up with access point associate in advance, connects When access point knows that M website has up MU-MIMO transmission demand, access point is M on K symbol Individual website distributes multiple pilot sub-carriers, and K symbol can be the LTF symbols of long training part, and K is even Number, K, M and L are positive integer, and L pilot sub-carrier belongs to above-mentioned multiple subcarriers, and L pilot tone is carried The distributing position of ripple is not restricted, and can be continuously distributed or discontinuous distribution.Access point reflects M website Mapping pattern is generated on L pilot sub-carrier for being mapped to K symbol, the method for mapping is：K symbol is drawn Be divided into K/2 symbol pair, each symbol to including when 2 symbols, 2 symbols of same symbol pair are adjacent Or it is non-conterminous, two internal symbols of same symbol are identical with the mapping relations of pilot sub-carrier with upper website, The mapping relations of website and pilot sub-carrier are differed on two symbols of distinct symbols pair, for M website Each website for, each website map at least one symbol pair and mapping symbol internally map at least One pilot sub-carrier, estimates for example, access point is distributed on 4 symbols for 3 websites for uplink frequency offset 5 pilot sub-carriers of meter, access point carries 5 pilot tones that above-mentioned 3 websites are mapped to 4 symbols Mapping pattern is generated on ripple, 4 symbols are to being divided into 2 symbols pair, it is assumed that symbol 1 and symbol 4 are divided into One symbol pair, symbol 2 and symbol 3 are divided on 1 symbol pair, symbol 1 and symbol 4 website and led The mapping mode of frequency subcarrier is identical, the mapping on symbol 2 and symbol 3 on website and pilot sub-carrier Mode is identical, and each website maps at least one symbol pair, and each website internally reflects in the symbol of mapping Penetrate at least one pilot sub-carrier.Not only including pilot sub-carrier on the transmission bandwidth of distribution also includes non-pilot Subcarrier, the present embodiment specify only the mapping mode of the pilot sub-carrier and M website of K symbol, right It is not restricted in the mapping mode present invention of the non-pilot subcarrier and M website of K symbol.Wireless access Website sends the mapping pattern of generation to M website respectively, and website, which is received, to be inquired about after mapping pattern at K Corresponding pilot sub-carrier is distinguished on symbol, then each website sends up on corresponding pilot sub-carrier Signal, access point is according to calculating the upper corresponding upward signal of pilot sub-carrier each symbol of reception Each self-corresponding frequency deviation value of M website, access point obtains each website in the internal same pilot tone of same symbol The phase difference of the upward signal sent on subcarrier, the frequency deviation value of each website is just can obtain according to the phase difference, Avoid calculating frequency deviation value by the way of orthogonal sequence in existing calculating, greatly reduce operation complexity and The peak-to-average force ratio of upward signal.
Knot is specifically, for example, M and L is each website mapping L/2 in even number, and the M website Pilot sub-carrier：
M=K=2, L=4；Or
M=K=4, L=4；Or
M=K=6, L=4；Or
M=K=8, L=4；Or
M=K=2, L=8；Or
M=K=4, L=8；Or
M=K=6, L=8；Or
M=K=8, L=8；Or
M=K=2, L=16；Or
M=K=4, L=16；Or
M=K=6, L=16；Or
M=K=8, L=16.
Wherein, the mapping mode present invention of M website and L pilot sub-carrier of K symbol is not limited System, mapping mode only needs to meet：K symbol is divided into K/2 symbol pair, and each symbol is to including 2 Website is identical with the mapping mode of pilot sub-carrier on individual symbol, two symbols of same symbol pair, difference symbol Number to two symbols it is different with the mapping mode of pilot sub-carrier, each website maps at least one symbol pair, And each website maps L/2 pilot sub-carrier.
Correspondingly, second aspect of the embodiment of the present invention is additionally provided in a kind of multiuser mimo system Uplink frequency offset estimation unit, WAP, communication system, or a kind of one or more programs of storage Computer-readable recording medium, including one or more programs include instruction, instruct when being performed by access point Access point is set to perform the method for any one in foregoing possible implementation.
Implement the embodiment of the present invention, have the advantages that：
Multiple websites of up MU-MIMO transmission are mapped to pilot tone son load by access point in the way of symbol pair On ripple, the upward signal that each website is sent on pilot sub-carrier is received, access point calculates the same symbol of website Number to same pilot sub-carrier on the phase differences of two upward signals just can obtain the uplink frequency offset of the website Value, reduces the peak-to-average force ratio of computational complexity and upward signal.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to implementing The accompanying drawing used required in example or description of the prior art is briefly described, it should be apparent that, describe below In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying On the premise of going out creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 a are a kind of network architecture diagrams of communication system provided in an embodiment of the present invention；
Fig. 1 b are uplink frequency offset estimations in a kind of multiuser mimo system provided in an embodiment of the present invention The schematic flow sheet of method；
Fig. 1 c are the examples of mapping pattern in Fig. 1 b；
Fig. 2 is a kind of schematic diagram for mapping pattern that first embodiment of the invention is provided；
Fig. 3 is a kind of schematic diagram for mapping pattern that second embodiment of the invention is provided；
Fig. 4 is a kind of schematic diagram for mapping pattern that fourth embodiment of the invention is provided；
Fig. 5 is a kind of schematic diagram for mapping pattern that fifth embodiment of the invention is provided；
Fig. 6 is a kind of schematic diagram for mapping pattern that sixth embodiment of the invention is provided；
Fig. 7 is a kind of schematic diagram for mapping pattern that seventh embodiment of the invention is provided；
Fig. 8 is a kind of schematic diagram for mapping pattern that eighth embodiment of the invention is provided；
Fig. 9 is a kind of schematic diagram for mapping pattern that ninth embodiment of the invention is provided；
Figure 10 is a kind of schematic diagram for mapping pattern that tenth embodiment of the invention is provided；
Figure 11 is a kind of schematic diagram for mapping pattern that eleventh embodiment of the invention is provided；
Figure 12 is a kind of schematic diagram for mapping pattern that twelveth embodiment of the invention is provided；
Figure 13 is a kind of schematic diagram for mapping pattern that thriteenth embodiment of the invention is provided；
Figure 14 is a kind of schematic diagram for mapping pattern that fourteenth embodiment of the invention is provided；
Figure 15 is a kind of schematic diagram for mapping pattern that fifteenth embodiment of the invention is provided；
Figure 16 is a kind of schematic diagram for mapping pattern that sixteenth embodiment of the invention is provided；
Figure 17 is a kind of schematic diagram for mapping pattern that seventeenth embodiment of the invention is provided；
Figure 18 is a kind of schematic diagram for mapping pattern that eighteenth embodiment of the invention is provided；
Figure 19 is a kind of schematic diagram for mapping pattern that nineteenth embodiment of the invention is provided；
Figure 20 is a kind of schematic diagram for mapping pattern that twentieth embodiment of the invention is provided；
Figure 21 is a kind of schematic diagram for mapping pattern that 21st embodiment of the invention is provided；
Figure 22 is a kind of schematic diagram for mapping pattern that 22nd embodiment of the invention is provided；
Figure 23 is a kind of schematic diagram for mapping pattern that 23th embodiment of the invention is provided；
Figure 24 is a kind of schematic diagram for mapping pattern that 24th embodiment of the invention is provided；
Figure 25 is a kind of schematic diagram for mapping pattern that 25th embodiment of the invention is provided；
Figure 26 is a kind of schematic diagram for mapping pattern that 26th embodiment of the invention is provided；
Figure 27 is a kind of schematic diagram for mapping pattern that 27th embodiment of the invention is provided；
Figure 28 is a kind of schematic diagram for mapping pattern that 28th embodiment of the invention is provided；
Figure 29 is a kind of schematic diagram for mapping pattern that 29th embodiment of the invention is provided；
Figure 30 is a kind of schematic diagram for mapping pattern that 30st embodiment of the invention is provided；
Figure 31 is a kind of schematic diagram for mapping pattern that 31nd embodiment of the invention is provided；
Figure 32 is a kind of schematic diagram for mapping pattern that 32th embodiment of the invention is provided；
Figure 33 is a kind of schematic diagram for mapping pattern that 33th embodiment of the invention is provided；
Figure 34 is a kind of schematic diagram for mapping pattern that 34th embodiment of the invention is provided；
Figure 35 is a kind of schematic diagram for mapping pattern that 35th embodiment of the invention is provided；
Figure 36 is uplink frequency offset estimation in a kind of multiuser mimo system provided in an embodiment of the present invention The structural representation of device；
Figure 37 is the structural representation of access point provided in an embodiment of the present invention.
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 clear Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the invention, rather than Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
Access point (AP, Access Point), also referred to as wireless access points or bridger or heat Point etc., it can be with access server or communication network.
Website (STA, Station), can also be referred to as user, can be wireless senser, radio communication Terminal or mobile terminal, such as support WiFi communication function mobile phone (or for " honeycomb " phone) and Computer with radio communication function.For example, it may be supporting the portable, pocket of WiFi communication function Formula, hand-held, built-in computer, wearable or vehicle-mounted radio communication device, they and nothing Line access exchanges the communication datas such as voice, data.
Referring to Fig. 1 a, be embodiment of the present invention application WLAN (Wireless Local Area Networks, WLAN, abbreviation WLAN) system rough schematic.Fig. 1 system includes an access point AP101 With multiple site STAs 102, when multiple STA102 have uplink demand, access point 101 is in K symbol It is upper to distribute the L pilot sub-carrier estimated for uplink frequency offset for multiple websites；
Multiple websites 102 are mapped to generate on L pilot sub-carrier of K symbol by access point 101 to be mapped Pattern, K symbol is divided into website and pilot tone on K/2 symbol pair, two internal symbols of same symbol The mapping relations of subcarrier are identical, and the mapping of website and pilot sub-carrier is closed on two symbols of distinct symbols pair System differs, and each website maps at least one pilot sub-carrier in multiple websites 101；Access point 101 Mapping pattern is sent to multiple websites 102；The inquiry of each website divides on K symbol in multiple websites 102 Not corresponding pilot sub-carrier, and according to sending up letter to access point 101 on corresponding pilot sub-carrier Number；Access point 101 calculates M according to each symbol of reception to the upper corresponding upward signal of pilot sub-carrier Individual each self-corresponding frequency deviation value of website.
It is a kind of upper line frequency of multiuser mimo system provided in an embodiment of the present invention referring to Fig. 1 b The schematic flow sheet of bias estimation, in embodiments of the present invention, methods described includes：
S101, access point distribute the L pilot tone estimated for uplink frequency offset on K symbol for M website Subcarrier；Wherein, M, L and K are positive integer, and K is even number.
Associated specifically, access point is set up with multiple websites in advance, the number of the website associated is set up with access point Amount is not restricted, and when access point knows that M website for setting up association has uplink demand, access point is M Individual website distributes the K symbol and L pilot sub-carrier estimated for uplink frequency offset, wherein, L pilot tone Subcarrier belongs to multiple subcarriers that transmission bandwidth is divided in advance, and L pilot sub-carrier can connect on transmission bandwidth Continuous distribution or discontinuous distribution, the present invention are not restricted, and K symbol can be the LTF symbols of long training part Number.For example, transmission bandwidth includes multiple subcarriers, 4 pilot sub-carriers belong in multiple pilot sub-carriers, Position of 4 pilot sub-carriers in multiple subcarriers is different according to different transmission bandwidths, with IEEE Exemplified by 802.11ax standards, the position of pilot sub-carrier is as follows in different transmission bandwidths：Correspondence 20MHz's Transmission bandwidth, 4 pilot sub-carriers are respectively the subcarrier that sub-carrier indices are -116, -90, -48 and -22, Or the respectively subcarrier of sub-carrier indices 22,48,90 and 116；Correspondence 40MHz transmission bandwidth, 4 pilot sub-carriers can be respectively the subcarrier of sub-carrier indices -238, -212, -170 and -144, or The respectively subcarrier of sub-carrier indices -104, -78, -36, -10, or respectively sub-carrier indices 10, 36th, 78 and 104 subcarrier, or the respectively subcarrier of sub-carrier indices 144,170,212,238； Correspondence 80MHz transmission bandwidth, 4 pilot sub-carriers can be respectively sub-carrier indices -494, -468, - 426, -400 subcarrier, or the respectively subcarrier of sub-carrier indices -360, -334, -292 and -266, The either respectively subcarrier of sub-carrier indices -252, -226, -184, -158 or respectively subcarrier rope Draw -118, -92, -50 and -24 subcarrier, or respectively sub-carrier indices 24,50,92 and 118 Subcarrier, either respectively the subcarrier of sub-carrier indices 158,184,226,252 or be respectively son The subcarrier of carrier index 266,292,334,360, or respectively sub-carrier indices 400,426,468 With 494 subcarrier.
Wherein, 1 symbol and the minimum transfer resource of 1 pilot sub-carrier composition, access point is M station Point K symbol of distribution and L pilot sub-carrier, M website could utilize the K symbol and pilot tone distributed The transfer resource of subcarrier carries out uplink, and M, L and K are positive integer, and K is even number.
M website is mapped on L pilot sub-carrier of K symbol and generates mapping graph by S102, access point Sample；Wherein, K symbol is divided into K/2 symbol pair, on two internal symbols of same symbol website and The mapping relations of pilot sub-carrier are identical, and website and pilot sub-carrier reflects on two symbols of distinct symbols pair The relation of penetrating is differed, and each website maps at least one symbol pair and at least one symbol in M website To being respectively mapped to a few pilot sub-carrier.
Specifically, mapping pattern represents the mapping relations of M website and L pilot sub-carrier on K symbol, The K symbol that access point distributes for M website first is divided into K/2 symbol pair, each symbol to comprising 2 symbols, the position relationship of two internal symbols of each symbol can be adjacent or non-conterminous, each symbol To comprising 2 symbols differ, the mapping of website and pilot sub-carrier on two symbols of same symbol pair Mode is identical, and the mapping mode of website and pilot sub-carrier is differed on two symbols of distinct symbols pair, Each website maps at least one symbol pair in M website, and each website internally maps in the symbol of mapping At least one pilot sub-carrier.
It should be noted that transmission bandwidth, which not only includes pilot sub-carrier, also includes non-pilot subcarrier, this reality Apply example and specify only the same mapping mode accorded with two internal symbols on website and pilot sub-carrier, do not have The mode of website and non-pilot subcarrier on two internal symbols of same symbol is provided, is carried for non-pilot How ripple is mapped with each website, and the present invention is not restricted, and can be carried out according to existing any mode Mapping.
S103, access point send mapping pattern to M website, and mapping pattern is used to indicate each in M website Corresponding pilot sub-carrier is distinguished in individual website inquiry on K symbol, and according to corresponding pilot sub-carrier Upward signal is sent to access point.
Specifically, access point sends mapping pattern respectively to M website, wherein access point is sending mapping graph Can send each self-corresponding site number while sample to M website, M website receive mapping pattern with Site number, obtains respective corresponding site number respectively, and mapping graph is inquired about according to respective site number The notation index number and pilot sub-carrier call number associated in sample, each website is according in the symbol rope inquired Upward signal is sent on the corresponding symbol of quotation marks and the corresponding pilot sub-carrier of pilot sub-carrier call number, wherein Upward signal on pilot sub-carrier due to sending, and upward signal is known signal for access point.
It should be noted that the site number of each website can also be by access point after the completion of association process Each website is distributed to, the present invention is not restricted.
S104, access point are calculated the upper corresponding upward signal of pilot sub-carrier according to each symbol of reception Each self-corresponding frequency deviation value of M website.
Specifically, access point receives the upward signal that M website is sent according to mapping pattern, access point is obtained The phase for the upward signal that each website is sent on internal two symbols of same symbol and same pilot sub-carrier Difference, the frequency deviation value of the website is obtained according to the phase difference, and the computing for being significantly reduced uplink frequency offset estimation is complicated Degree.
Exemplary, access point receives the up letter that M website is sent on K symbol and N number of subcarrier Number, N number of subcarrier includes L pilot sub-carrier, and the upward signal that access point is received can be expressed as One N × K matrix：
Wherein, M is the quantity of website, (M≤K, general M=K), Hm(N) arrived for m-th of website Channel response between access point on n-th subcarrier, smK(N) for m-th of website in k-th symbol N-th subcarrier on the upward signal that sends, PmKThe element arranged for m rows K in P matrixes, Φm For two caused by the CFO between m-th of website and access point adjacent intersymbol phase differences.
Referring to Fig. 1 c, with M=4, L=4, exemplified by K=4, below with regard to how the uplink frequency offset value of computer installation point Illustrate：
4 websites need to carry out up MU-MIMO transmission, and access point is 4 website allocation of transmission resources, 4 pilot sub-carriers are distributed for 4 websites on 4 symbols, wherein, what is included in transmission bandwidth is more It is not drawn into individual non-pilot subcarrier Fig. 1, the distribution of 4 in Fig. 1 pilot sub-carrier is not continuous. 4 symbols are divided into two symbols pair by access point, and specific dividing mode is：One symbol is to including symbol Number 1 and symbol 2, another symbol to including 4,4 websites of symbol 3 and symbol in 4 symbols to upper The mapping mode of 4 pilot sub-carriers is met：Website and pilot sub-carrier on internal two symbols of same symbol Mapping mode is identical, the mapping mode of website and pilot sub-carrier not phase on two symbols of different symbol pair Together, each website maps 1 all symbols pair, and each website maps 2 pilot sub-carriers.Access point Mapping pattern and site number as shown in Figure 1 are sent to 4 websites, each website is according to corresponding station Point numbering inquires about the call number and the call number of symbol of the pilot sub-carrier of association in mapping pattern, according to looking into The notation index number and pilot sub-carrier call number ask determine corresponding symbol and pilot sub-carrier, each station Point sends upward signal in correspondence symbol on corresponding pilot sub-carrier, and it is upper that AP 4 websites of reception are sent Row signal, the upward signal in the time domain received is carried out to go CP or FFT etc. to obtain on frequency domain after handling Upward signal, received according to above-mentioned formula access point up on 4 symbols and 4 pilot sub-carriers Signal is represented by 4 × 4 matrix：
Access point only needs to calculating website and sent on internal two symbols of same symbol and same pilot sub-carrier The phase difference of upward signal just can obtain the uplink frequency offset value between the website and access point.For example, By taking the uplink frequency offset value of website 1 as an example, access point is calculated according to website 1 in the internal (symbol 1 of first symbol With symbol 2) upward signal that sends on the pilot sub-carrier 1 uplink frequency offset value that calculates website 1 and access point is：
Meanwhile, using aforesaid way, access point can be according to website 1 in the internal (He of symbol 3 of second symbol Symbol 4) upward signal that sends on pilot sub-carrier 3 calculates the uplink frequency offset value of website 1 and access point, and will Calculated on pilot sub-carrier 1 and pilot sub-carrier 3 and obtain obtaining website 1 after uplink frequency offset value is weighted averagely Final uplink frequency offset value between access point；Or, take 3 in pilot sub-carrier 1 or pilot sub-carrier On uplink frequency offset value as website 1 uplink frequency offset value.
From above-described embodiment as can be seen that access point by multiple websites of up MU-MIMO transmission with symbol To mode be mapped on pilot sub-carrier, receive the upward signal that each website is sent on pilot sub-carrier, The phase difference that access point calculates two upward signals on the same pilot sub-carrier of website same symbol pair just may be used The uplink frequency offset value of the website is obtained, the peak-to-average force ratio of computational complexity and upward signal is reduced.
Optionally, in some embodiments of the invention, M and L is every in even number, and the M website Individual website maps L/2 pilot sub-carrier, M=K=2, L=4；Or
M=K=4, L=4；Or
M=K=6, L=4；Or
M=K=8, L=4；Or
M=K=2, L=8；Or
M=K=4, L=8；Or
M=K=6, L=8；Or
M=K=8, L=8；Or
M=K=2, L=16；Or
M=K=4, L=16；Or
M=K=6, L=16；Or
M=K=8, L=16.
Specifically, M and L is even number, the mapping mode of K symbol of M website and L pilot sub-carrier The present invention is not restricted, and mapping mode only needs to meet：K symbol is divided into K/2 symbol pair, each Symbol is to comprising 2 symbols, each symbol is to including different and unduplicated two symbols, same symbol pair Website is identical with the mapping mode of pilot sub-carrier on interior two symbols, is stood on internal two symbols of distinct symbols Point is different with the mapping mode of pilot sub-carrier, and each website maps L/2 on frequency domain and led in M website Frequency subcarrier, i.e., each website takes the half of pilot sub-carrier total quantity.
Optionally, in some embodiments of the invention, in the case of K/2 ＞ 1, two of same symbol pair Symbol is non-conterminous relation.
Represent that the call number of symbol is adjacent relation specifically, two symbols are neighbouring relations, for example, K=6, The call number of K symbol is followed successively by symbol 1, symbol 2, symbol 3, symbol 4, symbol 5 and symbol 6, then Without space character in the middle of symbol 1 and symbol 2, the two is neighbouring relations；It is spaced in symbol 1 and symbol 3 There is symbol 2, the two is non-conterminous relation.
It is preferred that, two symbols of same symbol centering are non-conterminous relation, two symbols of same symbol centering Between be spaced (K/2) -1 symbol, the transmission position of upward signal can so be disperseed as far as possible, kept away Exempt from the synergistic effect of upward signal, so that the peak-to-average force ratio of the upward signal of access point reception is reduced, for example, K=4 When, symbol 1 and symbol 3 are divided into 1 symbol by the symbol of mark space 1 of same symbol centering two Number right, symbol 2 and symbol 4 are divided into 1 symbol pair；During K=6, two intersymbols of same symbol centering Every 2 symbols, i.e., symbol 1 and symbol 4 are divided into a symbol pair, symbol 2 and symbol 5 are divided into One symbol pair, symbol 3 and symbol 6 are divided into 1 symbol pair.
Optionally, in some embodiments of the invention, in the case of M=L, L on each symbol are led Frequency subcarrier is with M website in mapping relations one by one.
Optionally, in some embodiments of the invention, described access point according to each symbol of reception to upper The corresponding upward signal of pilot sub-carrier calculate each self-corresponding frequency deviation value of M website and include：
Described access point receives the up letter that the M website is sent on each self-corresponding pilot sub-carrier Number；
Described access point calculates two that targeted sites are sent on same symbol internally same pilot sub-carrier respectively The phase difference of individual upward signal, frequency deviation of the targeted sites on the pilot sub-carrier is obtained according to phase difference Value；Wherein, the targeted sites are any one in the M website；
Described access point obtains each self-corresponding frequency deviation of at least one pilot sub-carrier of the targeted sites mapping Value, and by least one frequency deviation value be weighted it is average after obtain the frequency deviation values of the targeted sites.
Specifically, mapping at least one pilot sub-carrier for each website, access point receives each website and existed The upward signal sent at least one pilot sub-carrier, calculates same pilot tone of the website in same symbol pair The phase difference of two upward signals sent on subcarrier, at least one phase difference of each website correspondence, by root At least one frequency deviation value obtained according to phase difference obtains the final frequency deviation value of the website after being weighted averagely. For example, with reference to Fig. 1 c, for website 2, website 2 maps 2 pilot sub-carriers, and website 2 is being led Upward signal is sent on frequency subcarrier 2 and pilot sub-carrier 4, access point calculates first symbol centering website 2 Phase difference be θ 1, frequency deviation value of the website 2 on pilot sub-carrier 2, access point meter are calculated according to θ 1 It is θ 2 to calculate phase difference of the website 2 in second symbol pair, and calculate website 2 according to θ 2 carries in pilot tone Frequency deviation value on ripple 4, two frequency deviation values that calculating is obtained obtain the final of website 2 after being weighted averagely Frequency deviation value, weight coefficient can be set as needed, and the present invention is not restricted.
Optionally, in some embodiments of the invention, described access point according to each symbol of reception to upper The corresponding upward signal of pilot sub-carrier calculate each self-corresponding frequency deviation value of M website and include：
Described access point determines to determine target pilot at least one pilot sub-carrier of the targeted sites mapping Subcarrier, and at least one the symbol centering mapped from the targeted sites determine aiming symbol pair；Wherein, The targeted sites are any one in the M website；
Described access point calculates the targeted sites and sent on aiming symbol internally the target pilot subcarrier Two upward signals phase difference, and obtain according to phase difference the frequency deviation value of the targeted sites.
Specifically, access point determines 1 targeted sites in M website, access point selection target website is closed 1 pilot sub-carrier at least one pilot sub-carrier of connection is used as target pilot subcarrier, selection target 1 symbol of at least one symbol centering of station associate is to as aiming symbol pair, access point calculates target Website sends the phase difference of upward signal on the target pilot subcarrier of aiming symbol pair, according to phasometer Calculate the uplink frequency offset value of targeted sites.Access point calculates each website in M website according to aforesaid way successively Uplink frequency offset value, the uplink frequency offset value of all websites until having calculated, using aforesaid way calculate website Uplink frequency offset value have the advantages that operand is small and calculating speed is fast.
Below just in K, L and M under different values, using K symbol as the LTF symbols of long training part Number, symbol is to exemplified by for LTF symbols pair, to M website and L pilot sub-carrier on K symbol Mapping mode is illustrated.
Referring to Fig. 2, the schematic diagram of a kind of mapping pattern provided for first embodiment of the invention, of the invention real Apply in example, K=M=2, L=4, i.e. the transfer resource for being used for uplink frequency offset estimation of access point distribution includes time domain On 2 symbols and frequency domain on 4 pilot sub-carriers, the quantity of website is 2, and access point is by 2 Symbol is divided into 1 symbol pair, and the quantity of the pilot sub-carrier of the symbol centering website 1 mapping is 2, The quantity for the pilot sub-carrier that website 2 maps is 2, and the quantity of the pilot sub-carrier of each website mapping is Website and pilot sub-carrier reflects on the 1/2 of the pilot sub-carrier total quantity of distribution, two symbols of the symbol pair Penetrate that mode is identical, the mapping mode of 2 websites and 4 pilot sub-carriers on 2 symbols is specially：Website 1 mapping (1,1), (2,1), (1,3), (2,3)；Website 2 map (1,2), (2, 2) first parameter represents the call number of symbol, second parameter in, (Isosorbide-5-Nitrae), (2,4), bracket Represent the call number of pilot sub-carrier, the call number of pilot sub-carrier is that access point is to select in transmission bandwidth The relative indexing number of pilot sub-carrier.
Referring to Fig. 3, the schematic diagram of a kind of mapping pattern provided for second embodiment of the invention, of the invention real Apply in example, K=M=4, L=4, i.e. the transfer resource for being used for uplink frequency offset estimation of access point distribution includes time domain On 4 symbols and frequency domain on 4 pilot sub-carriers, the quantity of website is 4, access point by when 4 symbols Number 2 symbols pair are divided into, first symbol is to including the symbol 1 and symbol 3 in time domain, second symbol To including the symbol 2 and symbol 4 in time domain, two symbols of symbol pair are non-conterminous, belong to same symbol pair Website is identical with the mapping mode of pilot sub-carrier on symbol 1 and symbol 3, belongs to same symbol pair Website and the mapping mode of pilot sub-carrier are also identical on symbol 2 and symbol 4, and the two of distinct symbols pair The mapping mode of website and pilot sub-carrier is differed on individual symbol, the pilot sub-carrier of each website mapping Quantity carries for 4 pilot tones on 1/2,4 websites and 4 symbols of the pilot sub-carrier total quantity of distribution Mapping mode on ripple is specially：Website 1 maps (1,1), (3,1), (2,3), (4,3)； Website 2 maps (1,2), (3,2), (2,4), (4,4)；Website 3 map (1,3), (3,3), (2,1)、(4,1)；Website 4 maps (1,4), (3,4), (2,2), (4,2)；In bracket First parameter represents the call number of symbol, and second parameter represents the call number of pilot sub-carrier, pilot tone The call number of carrier wave is the relative indexing number that access point is the pilot sub-carrier selected in transmission bandwidth.
Referring to Fig. 4, the schematic diagram of a kind of mapping pattern provided for third embodiment of the invention, of the invention real Apply in example, K=M=4, L=4, i.e. the transfer resource for being used for uplink frequency offset estimation of access point distribution includes time domain On 4 symbols and frequency domain on 4 pilot sub-carriers, the quantity of website is 4, and access point is by 4 symbols 2 symbols pair are divided into, first symbol is to including the symbol 1 and symbol 3 in time domain, second symbol pair Including the symbol 2 and symbol 4 in time domain, two symbols that each symbol centering includes are non-conterminous, belong to same Website is identical with the mapping mode of pilot sub-carrier on the symbol 1 and symbol 3 of symbol pair, belongs to same symbol To symbol 2 and symbol 4 on website and pilot sub-carrier mapping mode it is also identical, the two of distinct symbols pair The mapping mode of website and pilot sub-carrier is differed on individual symbol, the pilot sub-carrier of each website mapping Quantity carries for 4 pilot tones on 1/2,4 websites and 4 symbols of the pilot sub-carrier total quantity of distribution Mapping mode on ripple is specially：Website 1 maps (1,1), (3,1), (1,3), (3,3)；Stand The mapping of point 2 (1,2), (3,2), (1,4), (3,4)；Website 3 map (2,1), (4,1), (2,3)、(4,3)；Website 4 maps (2,2), (2,4), (4,2), (4,4)；In bracket One parameter represents the call number of symbol, and second parameter represents the call number of pilot sub-carrier, and pilot tone is carried The call number of ripple is the relative indexing number that access point is the pilot sub-carrier selected in transmission bandwidth.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, in the embodiment of the present invention referring to Fig. 5 In, the transfer resource for being used for uplink frequency offset estimation of K=M=6, L=4, i.e. access point distribution is included in time domain 4 pilot sub-carriers on 6 symbols and frequency domain, the quantity of website is 6, and access point divides 6 symbols For 3 symbols pair, first symbol to including the symbol 1 and symbol 4 in time domain, the second symbol to including when Symbol 2 and symbol 5 on domain, the 3rd symbol is to including the symbol 3 and symbol 6 in time domain, each symbol Two symbols that centering includes are non-conterminous, the website and pilot sub-carrier on two symbols of same symbol pair Mapping mode is identical, and the mapping mode of website and pilot sub-carrier is not on two symbols of distinct symbols pair Identical, the quantity of the pilot sub-carrier of each website mapping is 1/2,6 of the pilot sub-carrier quantity of distribution The mapping mode of website and 4 pilot sub-carriers on 6 symbols is specially：Website 1 (1,1) (4,1), (2,3), (5,3), website 2 maps (1,2), (4,2), (2,4), (5,4)；Website 3 reflects Penetrate (1,3), (4,3), (3,1), (6,1)；Website 4 map (1,4), (4,4), (3,2), (6,2)；Website 5 maps (2,1), (5,1), (3,3), (6,3)；Website 6 map (2,2), (5,2)、(3,4)、(6,4)；First parameter represents the call number of symbol, second parameter in bracket Represent the call number of pilot sub-carrier, the call number of pilot sub-carrier is that access point is to select in transmission bandwidth The relative indexing number of pilot sub-carrier.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, in the embodiment of the present invention referring to Fig. 6 In, the transfer resource for being used for uplink frequency offset estimation of K=M=6, L=4, i.e. access point distribution is included in time domain 4 pilot sub-carriers on 6 symbols and frequency domain, the quantity of website is 6, and access point divides 6 symbols For 3 symbols pair, first symbol to including the symbol 1 and symbol 4 in time domain, the second symbol to including when Symbol 2 and symbol 5 on domain, the 3rd symbol is to including the symbol 3 and symbol 6 in time domain, same symbol To two symbols on website it is identical with the mapping mode of pilot sub-carrier, on two symbols of distinct symbols pair The mapping mode of website and pilot sub-carrier is differed, and the quantity of the pilot sub-carrier of each website mapping is to divide 4 pilot tones on 1/2 (2) of the pilot sub-carrier total quantity matched somebody with somebody, 6 websites and 6 symbols is carried The mapping mode of ripple is specially：Website 1 maps (1,1) (4,1), (1,3), (4,3)；Website 2 Map (1,2), (4,2), (1,4), (4,4)；Website 3 map (2,1), (5,1), (2,3), (5,3)；Website 4 maps (2,2), (5,2), (2,4), (5,4)；Website 5 map (3,1), (6,1)、(3,3)、(6,3)；First parameter represents the call number of symbol, second parameter in bracket Represent the call number of pilot sub-carrier, the call number of pilot sub-carrier is that access point is to select in transmission bandwidth The relative indexing number of pilot sub-carrier.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, in the embodiment of the present invention referring to Fig. 7 In, the transfer resource for being used for uplink frequency offset estimation of K=M=8, L=4, i.e. access point distribution is included in time domain 4 pilot sub-carriers on 8 symbols and frequency domain, the quantity of website is 8, and access point divides 8 symbols For 4 symbols pair, the first symbol is to including the symbol 1 and symbol 5 in time domain, the second symbol is to including time domain On symbol 2 and symbol 6, the 3rd symbol is to including the symbol 3 and symbol 7 in time domain, the 4th symbol To including symbol 4 and symbol 8, two symbols that each symbol centering includes are non-conterminous, the two of same symbol pair Website is identical with the mapping mode of pilot sub-carrier on individual symbol, on two symbols of distinct symbols pair website with The mapping mode of pilot sub-carrier is differed, quantity the leading for distribution of the pilot sub-carrier of each website mapping 1/2 (2) of frequency number of subcarriers, the mapping of 8 websites and 4 pilot sub-carriers on 8 symbols Mode is specially：Website 1 maps (1,1), (5,1), (3,3), (7,3)；Website 2 map (1,2), (5,2)、(3,4)、(7,4)；Website 3 maps (1,3), (5,3), (3,1), (7,1)； Website 4 maps (1,4), (5,4), (3,2), (7,2)；Website 5 map (2,1), (6,1), (4,3)、(8,3)；Website 6 maps (2,2), (6,2), (4,4), (8,4)；Website 7 reflects Penetrate (2,3), (6,3), (4,1), (8,1)；Website 8 map (2,4), (6,4), (4,2), (8,2)；First parameter represents the call number of symbol in bracket, and second parameter represents pilot sub-carrier Call number, the call number of pilot sub-carrier is that access point is the relative of the pilot sub-carrier that selects in transmission bandwidth Call number.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, in the embodiment of the present invention referring to Fig. 8 In, the transfer resource for being used for uplink frequency offset estimation of K=M=8, L=4, i.e. access point distribution is included in time domain 4 pilot sub-carriers on 8 symbols and frequency domain, the quantity of website is 8, and access point divides 8 symbols For 4 symbols pair, the first symbol is to including the symbol 1 and symbol 5 in time domain, the second symbol is to including time domain On symbol 2 and symbol 6, the 3rd symbol is to including the symbol 3 and symbol 7 in time domain, the 4th symbol To including symbol 4 and symbol 8, two symbols that each symbol centering includes are non-conterminous, the two of same symbol pair Website is identical with the mapping mode of pilot sub-carrier on individual symbol, is stood on two symbols of distinct symbols pair The mapping mode of point and pilot sub-carrier is differed, and the quantity of the pilot sub-carrier of each website mapping is distribution Pilot sub-carrier quantity 1/2 (2), 4 pilot sub-carriers on 8 websites and 8 symbols Mapping mode is：Website 1 maps (1,1), (5,1), (1,3), (5,3)；Website 2 map (1,2), (5,2)、(1,4)、(5,4)；Website 3 maps (2,1), (6,1), (2,3), (6,3)； Website 4 maps (2,2), (6,2), (2,4), (6,4)；Website 5 map (3,1), (7,1), (3,3)、(7,3)；Website 6 maps (3,2), (7,2), (3,4), (7,4)；Website 7 reflects Penetrate (4,1), (8,1), (4,3), (8,3)；Website 8 map (4,2), (8,2), (4,4), (8,4)；First parameter represents the call number of symbol in bracket, and second parameter represents pilot sub-carrier Call number, the call number of pilot sub-carrier is that access point is the relative of the pilot sub-carrier that selects in transmission bandwidth Call number.
It should be noted that the packet mode of symbol pair is not limited to this in the present embodiment, can be as needed One symbol pair is divided into arbitrary two symbols.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, in the embodiment of the present invention referring to Fig. 9 In, the transfer resource for being used for uplink frequency offset estimation of K=M=2, L=8, i.e. access point distribution is included in time domain 8 pilot sub-carriers on 2 symbols and frequency domain, the quantity of website is 2, and access point divides 2 symbols For 1 symbol pair, the symbol is to including the symbol 1 and symbol 2 in time domain, symbol 1 and symbol 2 are adjacent Website on relation, two symbols of the symbol centering is identical with the mapping mode of pilot sub-carrier, each The quantity of the pilot sub-carrier of website mapping is 1/2 (4) of the pilot sub-carrier quantity of distribution, 2 stations Put and the mapping mode of 8 pilot sub-carriers on 2 symbols is：Website 1 map (1,1), (2,1), (1,3)、(2,3)、(1,5)、(2,5)、(1,7)、(2,7)；Website 2 map (1,2), (2,2)、(1,4)、(2,4)、(1,6)、(2,6)、(1,8)、(2,8)；First in bracket Individual parameter represents the call number of symbol, and second parameter represents the call number of pilot sub-carrier, pilot sub-carrier Call number be relative indexing number that access point is the pilot sub-carrier selected in transmission bandwidth.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 10, in present invention implementation In example, the transfer resource of K=M=4, L=8, i.e. access point distribution is included on 4 symbols and frequency domain in time domain 8 pilot sub-carriers, the quantity of website is 4, and 4 symbols of access point are divided into 2 symbols pair, first Symbol to including the symbol 1 and symbol 3 in time domain, the second symbol to including the symbol 2 and symbol 4 in time domain, Two symbols of each symbol centering are non-conterminous, belong on the symbol 1 and symbol 3 of same symbol pair website with The mapping mode of pilot sub-carrier is identical, belongs to website and pilot tone on the symbol 2 and symbol 4 of same symbol pair The mapping mode of subcarrier is differed, the mapping of website and pilot sub-carrier on two symbols of distinct symbols pair Mode is differed, and the quantity of the pilot sub-carrier of each website mapping is the pilot sub-carrier total quantity of distribution 1/2 (4), the mapping side of 4 websites and 8 pilot sub-carriers on 4 symbols is：Website 1 maps (1,1)、(3,1)、(2,3)、(4,3)、(1,5)、(3,5)、(2,7)、(4,7)； Website 2 map (1,2), (3,2), (2,4), (4,4), (1,6), (3,6), (2,8), (4,8)；Website 3 map (2,1), (4,1), (1,3), (3,3), (2,5), (4,5), (1,7)、(3,7)；Website 4 map (2,2), (4,2), (1,4), (3,4), (2,6), (4,6)、(1,8)、(3,8)；First parameter represents the call number of symbol, second parameter in bracket Represent the call number of pilot sub-carrier, the call number of pilot sub-carrier is that access point is to select in transmission bandwidth The relative indexing number of pilot sub-carrier.
It should be noted that the packet mode of symbol pair is not limited to this in the present embodiment, can be as needed One symbol pair is divided into arbitrary two symbols.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 11, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of K=M=4, L=8, i.e. radio access node distribution includes 8 pilot sub-carriers on 4 symbols and frequency domain in time domain, the quantity of website is 4, and access point is by 4 Symbol is divided into 2 symbols pair, and the first symbol is to including the symbol 1 and symbol 3 in time domain, the second symbol pair Including the symbol 2 and symbol 4 in time domain, two symbols of each symbol centering are non-conterminous, belong to same symbol To symbol 1 and symbol 3 on website it is identical with the mapping mode of pilot sub-carrier, belong to same symbol pair Website is identical with the mapping mode of pilot sub-carrier on symbol 2 and symbol 4, two symbols of distinct symbols pair The mapping mode of upper website and pilot sub-carrier is differed, and the quantity of the pilot sub-carrier of each website mapping is 8 pilot tone on 1/2 (4) of the pilot sub-carrier total quantity of distribution, 4 websites and 4 symbols The mapping mode of carrier wave can be：Website 1 map (1,1), (3,1), (1,3), (3,3), (1,5), (3,5)、(1,7)、(3,7)；Website 2 map (1,2), (3,2), (1,4), (3,4), (1,6)、(3,6)、(1,8)、(3,8)；Website 3 map (2,1), (4,1), (2,3), (4,3)、(2,5)、(4,5)、(2,7)、(4,7)；Website 4 map (2,2), (4,2), (2,4)、(4,4)、(2,6)、(4,6)、(2,8)、(4,8)；First parameter list in bracket Show the call number of symbol, second parameter represents the call number of pilot sub-carrier, the call number of pilot sub-carrier For the relative indexing number that access point is the pilot sub-carrier selected in transmission bandwidth.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 12, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of K=M=4, L=8, i.e. radio access node distribution includes 8 pilot sub-carriers on 4 symbols and frequency domain in time domain, the quantity of website is 4, and access point is by 4 Symbol is divided into 2 symbols pair, and the first symbol is to including the symbol 1 and symbol 3 in time domain, the second symbol pair Including the symbol 2 and symbol 4 in time domain, two symbols of each symbol centering are non-conterminous, belong to same symbol To symbol 1 and symbol 3 on website it is identical with the mapping mode of pilot sub-carrier, belong to same symbol pair The mapping mode of website and pilot sub-carrier is differed on symbol 2 and symbol 4, two symbols of distinct symbols pair The mapping mode of website and pilot sub-carrier is differed on number, the quantity of the pilot sub-carrier of each website mapping For 1/2 (4) of the pilot sub-carrier total quantity of distribution, 8 pilot tone on 4 websites and 4 symbols Mapping mode on carrier wave is：Website 1 map (1,1), (3,1), (1,3), (3,3), (1,5), (3,5)、(2,7)、(4,7)；Website 2 map (1,2), (3,2), (1,4), (3,4), (1,6)、(3,6)、(2,8)、(4,8)；Website 3 map (2,1), (4,1), (2,3), (4,3)、(2,5)、(4,5)、(1,7)、(3,7)；Website 4 map (2,2), (4,2), (2,6)、(4,6)、(1,8)、(3,8)；First parameter represents the call number of symbol in bracket, Second parameter represents the call number of pilot sub-carrier, and the call number of pilot sub-carrier is that access point is transmission belt The relative indexing number of the pilot sub-carrier selected in width.
It should be noted that the packet mode of symbol pair is not limited to this in the present embodiment, can be as needed One symbol pair is divided into arbitrary two symbols.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 13, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of K=M=6, L=8, i.e. access point distribution includes time domain 6 symbols and frequency domain on 8 pilot sub-carriers, the quantity of website is 6, and access point draws 6 symbols It is divided into 3 symbols pair, first symbol is to including the symbol 1 and symbol 4 in time domain, second symbol is to bag Include the symbol 2 and symbol 5 in time domain, the 3rd symbol is to including the symbol 3 and symbol 6 in time domain, each Two symbols of symbol centering are non-conterminous, belong to website and pilot sub-carrier on two symbols of same symbol pair Mapping mode it is identical, the mapping mode of website and pilot sub-carrier not phase on two symbols of distinct symbols pair Together, 1/2 (4) of pilot sub-carrier total quantity of the quantity of the pilot sub-carrier of each website mapping for distribution, The mapping mode of 6 websites and 8 pilot sub-carriers on 6 symbols can be：Website 1 map (1,1), (4,1)、(2,3)、(5,3)、(1,5)、(4,5)、(2,7)、(5,7)；Website 2 maps (1,2)、(4,2)、(2,4)、(5,4)、(1,6)、(4,6)、(2,8)、(5,8)； Website 3 map (3,1), (6,1), (1,3), (4,3), (3,5), (6,5), (1,7), (4,7)；Website 4 map (3,2), (6,2), (1,4), (4,4), (3,6), (6,6), (1,8)、(4,8)；First parameter represents the call number of symbol in bracket, and second parameter represents pilot tone The call number of subcarrier, the call number of pilot sub-carrier is that access point is that pilot tone selected in transmission bandwidth is carried The relative indexing number of ripple.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 14, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of K=M=6, L=8, i.e. access point distribution includes time domain 6 symbols and frequency domain on 8 pilot sub-carriers, the quantity of website is 6, and access point is by 6 of distribution Symbol is divided into 3 symbols pair, and first symbol is to including the symbol 1 and symbol 4 in time domain, second symbol Number to including the symbol 2 and symbol 5 in time domain, the 3rd symbol to including the symbol 3 and symbol 6 in time domain, Two symbols of each symbol centering are non-conterminous, website and pilot sub-carrier on two symbols of same symbol pair Mapping mode it is identical, the mapping mode of website and pilot sub-carrier on two symbols of distinct symbols pair Differ, the quantity of the pilot sub-carrier of each website mapping is the 1/2 (4 of the pilot sub-carrier total quantity of distribution It is individual), the mapping mode of 6 websites and 8 pilot sub-carriers on 6 symbols is:Website 1 map (1,1), (4,1)、(1,3)、(4,3)、(1,5)、(4,5)、(1,7)、(4,7)；Website 2 maps (1,2)、(4,2)、(1,4)、(4,4)、(1,6)、(4,6)、(1,8)、(4,8)； Website 3 map (2,1), (5,1), (2,3), (5,3), (2,5), (5,5), (2,7), (5,7)；Website 4 map (2,2), (5,2), (2,4), (5,4), (2,6), (5,6), (2,8)、(5,8)；Website 5 map (3,1), (6,1), (3,3), (6,3), (3,5), (6,5)、(3,7)、(6,7)；Website 6 map (3,2), (6,2), (3,4), (6,4), (3,6)、(6,6)、(3,8)、(6,8)；First parameter represents the call number of symbol in bracket, Second parameter represents the call number of pilot sub-carrier, and the call number of pilot sub-carrier is that access point is transmission belt The relative indexing number of the pilot sub-carrier selected in width.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 15, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of K=M=6, L=8, i.e. access point distribution includes time domain 6 symbols and frequency domain on 8 pilot sub-carriers, the quantity of website is 6, and access point draws 6 symbols It is divided into 3 symbols pair, first symbol is to including the symbol 1 and symbol 4 in time domain, second symbol is to bag Include the symbol 2 and symbol 5 in time domain, the 3rd symbol is to including the symbol 3 and symbol 6 in time domain, each Two symbols of symbol centering are non-conterminous, and website and pilot sub-carrier reflects on two symbols of same symbol pair Penetrate that mode is identical, the mapping mode of website and pilot sub-carrier not phase on two symbols of distinct symbols pair Together, 1/2 (4) of pilot sub-carrier total quantity of the quantity of the pilot sub-carrier of each website mapping for distribution, The mapping mode of 6 websites and 8 pilot sub-carriers on 6 symbols can be：Website 1 map (1,1), (4,1)、(3,3)、(6,3)、(2,5)、(5,5)、(1,7)、(4,7)；Website 2 maps (1,2)、(4,2)、(3,4)、(6,4)、(2,6)、(5,6)、(1,8)、(4,8)； Website 3 map (2,1), (5,1), (1,3), (4,3), (3,5), (6,5), (2,7), (5,7)；Website 4 map (2,2), (5,2), (1,4), (4,4), (3,6), (6,6), (2,8)、(5,8)；Website 5 map (3,1), (6,1), (2,3), (5,3), (1,5), (4,5)、(3,7)、(6,7)；Website 6 map (3,2), (6,2), (2,4), (5,4), (1,6)、(4,6)、(3,8)、(6,8)；First parameter represents the call number of symbol in bracket, Second parameter represents the call number of pilot sub-carrier, and the call number of pilot sub-carrier is that access point is transmission belt The relative indexing number of the pilot sub-carrier selected in width.
It should be noted that the packet mode of symbol pair is not limited to this in the present embodiment, can be as needed One symbol pair is divided into arbitrary two symbols.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 16, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of K=M=6, L=8, i.e. access point distribution includes time domain 6 symbols and frequency domain on 8 pilot sub-carriers, the quantity of website is 6, and access point draws 6 symbols It is divided into 3 symbols pair, first symbol is to including the symbol 1 and symbol 4 in time domain, second symbol is to bag Include the symbol 2 and symbol 5 in time domain, the 3rd symbol is to including the symbol 3 and symbol 6 in time domain, each Two symbols of symbol centering are non-conterminous, and website and pilot sub-carrier reflects on two symbols of same symbol pair Penetrate that mode is identical, the mapping mode of website and pilot sub-carrier not phase on two symbols of distinct symbols pair Together, 1/2 (4) of pilot sub-carrier total quantity of the quantity of the pilot sub-carrier of each website mapping for distribution, The mapping mode of 6 websites and 8 pilot sub-carriers on 6 symbols can be：Website 1 map (1,1), (4,1)、(1,3)、(4,3)、(1,5)、(4,5)、(3,7)、(6,7)；Website 2 maps (1,2)、(4,2)、(1,4)、(4,4)、(1,6)、(4,6)、(3,8)、(6,8)； Website 3 map (2,1), (5,1), (2,3), (5,3), (2,5), (5,5), (1,7), (4,7)；Website 4 map (2,2), (5,2), (2,4), (5,4), (2,6), (5,6), (1,8)、(4,8)；Website 5 map (3,1), (6,1), (3,3), (6,3), (3,5), (6,5)、(2,7)、(5,7)；Website 6 map (3,2), (6,2), (3,4), (6,4), (3,6)、(6,6)、(2,8)、(5,8)；First parameter represents the call number of symbol in bracket, Second parameter represents the call number of pilot sub-carrier, and the call number of pilot sub-carrier is that access point is transmission belt The relative indexing number of the pilot sub-carrier selected in width.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 17, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of M=K=L=8, i.e. access point distribution is included in time domain 8 pilot sub-carriers on 8 symbols and frequency domain, the quantity of website is 8, and access point divides 8 symbols For 4 symbols pair, first symbol to including the symbol 1 and symbol 5 in time domain, second symbol to including Symbol 2 and symbol 6 in time domain, the 3rd symbol is to including the symbol 3 and symbol 7 in time domain, the 4th Symbol is to including the symbol 4 and symbol 8 in time domain, website is carried with pilot tone on two symbols of same symbol pair The mapping mode of ripple is identical, the mapping side of website and pilot sub-carrier on two symbols of distinct symbols pair Formula is differed, and website maps one by one with pilot sub-carrier on each symbol, and pilot tone of each website mapping is carried The quantity of ripple is 8 on 1/2 (4) of the pilot sub-carrier total quantity distributed, 8 websites and 8 symbols The mapping mode of individual pilot sub-carrier can be：Website 1 map (1,1), (5,1), (3,3), (7,3), (2,5)、(6,5)、(4,7)、(8,7)；Website 2 map (1,2), (5,2), (3,4), (7,4)、(2,6)、(6,6)、(4,8)、(8,8)；Website 3 map (3,1), (7,1), (1,3)、(5,3)、(4,5)、(8,5)、(2,7)、(6,7)；Website 4 map (3,2), (7,2)、(1,4)、(5,4)、(4,6)、(8,6)、(2,8)、(6,8)；Website 5 maps (2,1)、(6,1)、(4,3)、(8,3)、(1,5)、(5,5)、(3,7)、(7,7)； Website 6 map (2,2), (6,2), (4,4), (8,4), (1,6), (5,6), (3,8), (7,8)；Website 7 map (4,1), (8,1), (2,3), (6,3), (3,5), (7,5), (1,7)、(5,7)；Website 8 map (4,2), (8,2), (2,4), (6,4), (3,6), (7,6)、(1,8)、(5,8)；First parameter represents the call number of symbol, second parameter in bracket Represent the call number of pilot sub-carrier, the call number of pilot sub-carrier is that access point is to select in transmission bandwidth The relative indexing number of pilot sub-carrier.
It should be noted that the packet mode of symbol pair is not limited to this in the present embodiment, can be as needed One symbol pair is divided into arbitrary two symbols.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, the embodiment of the present invention referring to Figure 18 Reflecting for 8 websites and 8 pilot sub-carriers on 8 symbols is differed only in the embodiment in Figure 17 Penetrate the mapping of 8 websites and 8 pilot sub-carriers on 8 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (5,1), (3,3), (7,3), (1,5), (5,5), (3,7)、(7,7)；Website 2 map (1,2), (5,2), (3,4), (7,4), (1,6), (5,6)、(3,8)、(7,8)；Website 3 map (3,1), (7,1), (1,3), (5,3), (3,5)、(7,5)、(1,7)、(5,7)；Website 4 map (3,2), (7,2), (1,4), (5,4)、(3,6)、(7,6)、(1,8)、(5,8)；Website 5 map (2,1), (6,1), (4,3)、(8,3)、(2,5)、(6,5)、(4,7)、(8,7)；Website 6 map (2,2), (6,2)、(4,4)、(8,4)、(2,6)、(6,6)、(4,8)、(8,8)；Website 7 maps (4,1)、(8,1)、(2,3)、(6,3)、(4,5)、(8,5)、(2,7)、(6,7)； Website 8 map (4,2), (8,2), (2,4), (6,4), (4,6), (8,6), (2,8), (6,8)。
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 19, in present invention implementation Example and Figure 17 embodiment differ only in reflecting for 8 websites and 8 pilot sub-carriers on 8 symbols Penetrate the mapping of 8 websites and 8 pilot sub-carriers on 8 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (5,1), (3,3), (7,3), (1,5), (5,5), (4,7)、(8,7)；Website 2 map (1,2), (5,2), (3,4), (7,4), (1,6), (5,6)、(4,8)、(8,8)；Website 3 map (3,1), (7,1), (1,3), (5,3), (4,5)、(8,5)、(1,7)、(5,7)；Website 4 map (3,2), (7,2), (1,4), (5,4)、(4,6)、(8,6)、(1,8)、(5,8)；Website 5 map (2,1), (6,1), (4,3)、(8,3)、(2,5)、(6,5)、(3,7)、(7、7)；Website 6 map (2,2), (6,2)、(4,4)、(8,4)、(2,6)、(6,6)、(3,8)、(7,8)；Website 7 maps (4,1)、(8,1)、(2,3)、(6,3)、(3,5)、(7,5)、(2,7)、(6,7)； Website 8 map (4,2), (8,2), (2,4), (6,4), (3,6), (7,6), (2,8), (6,8)。
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 20, in present invention implementation Example and Figure 17 embodiment differ only in reflecting for 8 websites and 8 pilot sub-carriers on 8 symbols Penetrate the mapping of 8 websites and 8 pilot sub-carriers on 8 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (5,1), (1,3), (5,3), (1,5), (5,5), (4,7)、(8,7)；Website 2 map (1,2), (5,2), (1,4), (5,4), (1,6), (5,6)、(4,8)、(8,8)；Website 3 map (2,1), (6,1), (2,3), (6,3), (2,5)、(6,5)、(1,7)、(5,7)；Website 4 map (2,2), (6,2), (2,4), (6,4)、(2,6)、(6,6)、(1,8)、(5,8)；Website 5 map (3,1), (7,1), (3,3)、(7,3)、(3,5)、(7,5)、(2,7)、(6,7)；Website 6 map (3,2), (7,2)、(3,4)、(7,4)、(3,6)、(7,6)、(2,8)、(6,8)；Website 7 maps (4,1)、(8,1)、(4,3)、(8,3)、(4,5)、(8,5)、(3,7)、(7,7)； Website 8 map (4,2), (8,2), (4,4), (8,4), (4,6), (8,6), (3,8), (7,8)。
Referring to Figure 21, be a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, the embodiment of the present invention With the mapping for differing only in 8 pilot sub-carriers on 8 websites and 8 symbols of Figure 17 embodiment Mode is different, the mapping side of 8 websites and 8 pilot sub-carriers on 8 symbols in the embodiment of the present invention Formula is：Website 1 (1,1), (5,1), (1,3), (5,3), (1,5), (5,5), (1,7), (5,7)；Website 2 map (1,2), (5,2), (1,4), (5,4), (1,6), (5,6), (1,8)、(5,8)；Website 3 map (2,1), (6,1), (2,3), (6,3), (2,5), (6,5)、(2,7)、(6,7)；Website 4 map (2,2), (6,2), (2,4), (6,4), (2,6)、(6,6)、(2,8)、(6,8)；Website 5 map (3,1), (7,1), (3,3), (7,3)、(3,5)、(7,5)、(3,7)、(7,7)；Website 6 map (3,2), (7,2), (3,4)、(7,4)、(3,6)、(7,6)、(3,8)、(7,8)；Website 7 map (4,1), (8,1)、(4,3)、(8,3)、(4,5)、(8,5)、(4,7)、(8,7)；Website 8 maps (4,2)、(8,2)、(4,4)、(8,4)、(4,6)、(8,6)、(4,8)、(8,8)。
The embodiments of the invention provide a kind of mapping pattern, in embodiments of the present invention, M=K=2, L=16, I.e. radio access node distribution be used for uplink frequency offset estimate transfer resource include time domain on 2 symbols and 16 pilot sub-carriers on frequency domain, the quantity of website is 2, and 2 symbols are divided into 1 symbol by access point Number right, the symbol is to including symbol 1 and symbol 2, website and pilot sub-carrier on two symbols of symbol pair Mapping mode is identical, for each symbol, and call number is distributed into website 1 for the pilot sub-carrier of odd number, Call number distributes to website 2 for the pilot sub-carrier of even number.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 22, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of M=K=4, L=16, i.e. access point distribution includes time domain On 4 symbols and frequency domain on 16 pilot sub-carriers, the quantity of website is 4, and access point is by 4 symbols Number 2 symbols pair are divided into, first symbol is to including the symbol 1 and symbol 3 in time domain, second symbol To including the symbol 2 and symbol 4 in time domain, two symbols of each symbol centering are non-conterminous, belong to same Website is identical with the mapping mode of pilot sub-carrier on the symbol 1 and symbol 3 of symbol pair, belongs to same symbol To symbol 2 and symbol 4 on website it is identical with the mapping mode of pilot sub-carrier, two of distinct symbols pair The mapping mode of website and pilot sub-carrier is differed on symbol, the number of the pilot sub-carrier of each website mapping 1/2 (8) for measuring the pilot sub-carrier quantity for distribution, 16 pilot tones of 4 websites on 4 symbols The mapping mode of subcarrier can be：Website 1 map (1,1), (3,1), (2,3), (4,3), (1,5)、(3,5)、(2,7)、(4,7)、(1,9)、(3,9)、(2,11)、(4,11)、 (1,13)、(3,13)、(2,15)、(4,15)；Website 2 map (1,2), (3,2), (2,4), (4,4)、(1,6)、(3,6)、(2,8)、(4,8)、(1,10)、(3,10)、(2,12)、 (4,12)、(1,14)、(3,14)、(2,16)、(4,16)；Website 3 map (2,1), (4,1), (1,3)、(3,3)、(2,5)、(4,5)、(1,7)、(3,7)、(2,9)、(4,9)、 (1,11)、(3,11)、(2,13)、(4,13)、(1,15)、(3,15)；Website 4 map (2,2), (4,2)、(1,4)、(3,4)、(2,6)、(4,6)、(1,8)、(3,8)、(2,10)、 (4,10), (1,12), (3,12), (2,14), (4,14), (1,16), (3,16). First parameter represents the call number of symbol in bracket, and second parameter represents the call number of pilot sub-carrier, The call number of pilot sub-carrier is the relative indexing number that access point is the pilot sub-carrier selected in transmission bandwidth.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, the embodiment of the present invention referring to Figure 23 Reflecting for 4 websites and 16 pilot sub-carriers on 4 symbols is differed only in Figure 22 embodiment Penetrate the mapping of 4 websites and 16 pilot sub-carriers on 4 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (3,1), (1,3), (3,3), (1,5), (3,5), (1,7)、(3,7)、(1,9)、(3,9)、(1,11)、(3,11)、(1,13)、(3,13)、 (1,15)、(3,15)；Website 2 map (1,2), (3,2), (1,4), (3,4), (1,6), (3,6)、(1,8)、(3,8)、(1,10)、(3,10)、(1,12)、(3,12)、(1,14)、 (3,14)、(1,16)、(3,16)；Website 3 map (2,1), (4,1), (2,3), (4,3), (2,5)、(4,5)、(2,7)、(4,7)、(2,9)、(4,9)、(2,11)、(4,11)、 (2,13)、(4,13)、(2,15)、(4,15)；Website 4 map (2,2), (4,2), (2,4), (4,4)、(2,6)、(4,6)、(2,8)、(4,8)、(2,10)、(4,10)、(2,12)、 (4,12)、(2,14)、(4,14)、(2,16)、(4,16)。
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, the embodiment of the present invention referring to Figure 24 Reflecting for 4 websites and 16 pilot sub-carriers on 4 symbols is differed only in Figure 22 embodiment Penetrate the mapping of 4 websites and 16 pilot sub-carriers on 4 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (3,1), (1,3), (3,3), (1,5), (3,5), (1,7)、(3,7)、(1,9)、(3,9)、(1,11)、(3,11)、(1,13)、(3,13)、 (2,15)、(4,15)；Website 2 map (1,2), (3,2), (1,4), (3,4), (1,6), (3,6)、(1,8)、(3,8)、(1,10)、(3,10)、(1,12)、(3,12)、(1,14)、 (3,14)、(2,16)、(4,16)；Website 3 map (2,1), (4,1), (2,3), (4,3), (2,5)、(4,5)、(2,7)、(4,7)、(2,9)、(4,9)、(2,11)、(4,11)、 (2,13)、(4,13)、(1,15)、(3,15)；Website 4 map (2,2), (4,2), (2,4), (4,4)、(2,6)、(4,6)、(2,8)、(4,8)、(2,10)、(4,10)、(2,12)、 (4,12)、(2,14)、(4,14)、(1,16)、(3,16)。
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 25, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of M=K=6, L=16, i.e. access point distribution includes time domain On 6 symbols and frequency domain on 16 pilot sub-carriers, the quantity of website is 6, and access point is by 6 symbols Number 3 symbols pair are divided into, first symbol is to including the symbol 1 and symbol 4 in time domain, second symbol To including the symbol 2 and symbol 5 in time domain, the 3rd symbol to including the symbol 3 and symbol 6 in time domain, Two symbols of each symbol centering are non-conterminous, website and pilot sub-carrier on two symbols of same symbol pair Mapping mode it is identical, the mapping mode of website and pilot sub-carrier not phase on two symbols of distinct symbols pair Together, 1/2 (8) of pilot sub-carrier quantity of the quantity of the pilot sub-carrier of each website mapping for distribution, The mapping mode of 6 websites and 16 pilot sub-carriers on 6 symbols is：Website 1 map (1,1), (4,1)、(2,3)、(5,3)、(1,5)、(4,5)、(2,7)、(5,7)、(1,9)、 (4,9)、(2,11)、(5,11)、(1,13)、(4,13)、(2,15)、(5,15)；Website 2 mapping (1,2), (4,2), (2,4), (5,4), (1,6), (4,6), (2,8), (5,7), (1,10)、(4,10)、(2,12)、(5,12)、(1,14)、(4,14)、(2,16)、(5,16)； Website 3 map (3,1), (6,1), (1,3), (4,3) (3,5), (6,5), (1,7), (1,7), (3,9)、(6,9)、(1,11)、(4,11)、(3,13)、(6,13)、(1,15)、(4,15)； Website 4 map (3,2), (6,2), (1,4), (4,4) (3,6), (6,6), (1,8), (1,8), (3,10)、(6,10)、(1,12)、(4,12)、(3,14)、(6,14)、(1,16)、(4,16)； Website 5 map (2,1), (5,1), (3,3), (6,3), (2,5), (5,5), (3,7), (6,7)、(2,9)、(5,9)、(3,11)、(6,11)、(2,13)、(5,13)、(3,15)、 (6,15)；Website 6 map (2,2), (5,2), (3,4), (6,4), (2,6), (5,6), (3,8)、(6,7)、(2,10)、(5,10)、(3,12)、(6,12)、(2,14)、(5,14)、 (3,16)、(6,16).First parameter represents the call number of symbol in bracket, and second parameter represents to lead The call number of frequency subcarrier, the call number of pilot sub-carrier is that access point is pilot tone selected in transmission bandwidth The relative indexing number of carrier wave.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, the embodiment of the present invention referring to Figure 26 Reflecting for 6 websites and 16 pilot sub-carriers on 6 symbols is differed only in Figure 25 embodiment Penetrate the mapping of 6 websites and 16 pilot sub-carriers on 6 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (4,1), (1,3), (4,3), (1,5), (4,5), (1,7)、(4,7)、(1,9)、(4,9)、(1,11)、(4,11)、(1,13)、(4,13)、 (1,15)、(4,15)；Website 2 map (1,2), (4,2), (1,4), (4,4), (1,6), (4,6)、(1,8)、(4,8)、(1,10)、(4,10)、(1,12)、(4,12)、(1,14)、 (4,14)、(1,16)、(4,16)；Website 3 map (2,1), (5,1), (2,3), (5,3), (2,5)、(5,5)、(2,7)、(5,7)、(2,9)、(5,9)、(2,11)、(5,11)、 (2,13)、(5,13)、(2,15)、(5,15)；Website 4 map (2,2), (5,2), (2,4), (5,4)、(2,6)、(5,6)、(2,8)、(5,8)、(2,10)、(5,10)、(2,12)、 (5,12)、(2,14)、(5,14)、(2,16)、(5,16)；Website 5 map (3,1), (6,1), (3,3)、(6,3)、(3,5)、(6,5)、(3,7)、(6,7)、(3,9)、(6,9)、 (3,11)、(6,11)、(3,13)、(6,13)、(3,15)、(6,15)；Website 6 map (3,2), (6,2)、(3,4)、(6,4)、(3,6)、(6,6)、(3,8)、(6,8)、(3,10)、 (6,10)、(3,12)、(6,12)、(3,14)、(6,14)、(3,16)、(6,16)。
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, the embodiment of the present invention referring to Figure 27 Reflecting for 6 websites and 16 pilot sub-carriers on 6 symbols is differed only in Figure 25 embodiment Penetrate the mapping of 6 websites and 16 pilot sub-carriers on 6 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (4,1), (1,3), (4,3), (1,5), (4,5), (1,7)、(4,7)、(1,9)、(4,9)、(1,11)、(4,11)、(1,13)、(4,13)、 (3,15)、(6,15)；Website 2 map (1,2), (4,2), (1,4), (4,4), (1,6), (4,6)、(1,8)、(4,8)、(1,10)、(4,10)、(1,12)、(4,12)、(1,14)、 (4,14)、(3,16)、(6,16)；Website 3 map (2,1), (5,1), (2,3), (5,3), (2,5)、(5,5)、(2,7)、(5,7)、(2,9)、(5,9)、(2,11)、(5,11)、 (2,13)、(5,13)、(2,15)、(5,15)；Website 4 map (2,2), (5,2), (2,4), (5,4)、(2,6)、(5,6)、(2,8)、(5,8)、(2,10)、(5,10)、(2,12)、 (5,12)、(2,14)、(5,14)、(2,16)、(5,16)；Website 5 map (3,1), (6,1), (3,3)、(6,3)、(3,5)、(6,5)、(3,7)、(6,7)、(3,9)、(6,9)、 (3,11)、(6,11)、(3,13)、(6,13)、(1,15)、(4,15)；Website 6 map (3,2), (6,2)、(3,4)、(6,4)、(3,6)、(6,6)、(3,8)、(6,8)、(3,10)、 (6,10)、(3,12)、(6,12)、(3,14)、(6,14)、(1,16)、(4,16)。
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 28, in present invention implementation In example, the transfer resource for being used for uplink frequency offset estimation of M=K=8, L=16, i.e. access point distribution includes time domain On 8 symbols and frequency domain on 16 pilot tones carry, the quantity of website is 8, and access point is by 8 symbols 4 symbols pair are divided into, first symbol is to including the symbol 1 and symbol 5 in time domain, second symbol pair Including the symbol 2 and symbol 6 in time domain, the 3rd symbol is to including the symbol 3 and symbol 7 in time domain, Four symbols are to including the symbol 4 and symbol 8 in time domain, two symbols of each symbol centering are non-conterminous, together Website is identical with the mapping mode of pilot sub-carrier on two symbols of one symbol pair, two of distinct symbols pair The mapping mode of website and pilot sub-carrier is differed on symbol, the number of the pilot sub-carrier of each website mapping 16 pilot tones on 1/2 (8) for measuring the pilot sub-carrier quantity for distribution, 8 websites and 8 symbols The mapping mode of subcarrier is：Website 1 map (1,1), (5,1), (2,3), (6,3), (3,5), (7,5), (4,7), (8,7), (1,9), (5,9), (2,11), (6,11), (3,13), (7,13)、(4,15)、(8,15)；Website 2 map (1,2), (5,2), (2,4), (6,4), (3,6), (7,6), (4,8), (8,8), (1,10), (5,10), (2,12), (6,112), (3,14)、(7,14)、(4,16)、(8,16)；Website 3 map (2,1), (6,1), (1,3), (5,3)、(4,5)、(8,5)、(3,7)、(7,7)、(2,9)、(6,9)、(1,11)、 (5,11), (4,13), (8,13), (3,15), (7,15)；Website 4 map (2,2), (6,2), (1,4)、(5,4)、(4,6)、(8,6)、(3,8)、(7,8)、(2,10)、(6,10)、 (1,12), (5,1,2), (4,14), (8,14), (3,16), (7,16)；Website 5 maps (3,1)、(7,1)、(4,3)、(8,3)、(1,5)、(5,5)、(2,7)、(6,7)、 (3,9)、(7,9)、(4,11)、(8,11)、(1,13)、(5,13)、(2,15)、(6,15)； Website 6 map (3,2), (7,2), (4,4), (8,4), (1,6), (5,6), (2,8), (6,8)、(3,10)、(7,10)、(4,12)、(8,12)、(1,14)、(5,14)、(2,16)、 (6,16)；Website 7 map (4,1), (8,1), (3,3), (7,3), (2,5), (6,5), (1,7)、(7,7)、(4,9)、(8,9)、(3,11)、(7,11)、(2,13)、(6,13)、 (1,15)、(7,15)；Website 8 map (4,2), (8,2), (3,4), (7,4), (2,6), (6,6)、(1,8)、(7,8)、(4,10)、(8,10)、(3,11)、(7,11)、(2,13)、 (6,13)、(1,15)、(7,15).First parameter represents the call number of symbol, second in bracket Parameter represents the call number of pilot sub-carrier, and the call number of pilot sub-carrier is that access point is choosing in transmission bandwidth The relative indexing number for the pilot sub-carrier selected.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, the embodiment of the present invention referring to Figure 29 Reflecting for 8 websites and 16 pilot sub-carriers on 8 symbols is differed only in Figure 28 embodiment Penetrate the mapping of 8 websites and 16 pilot sub-carriers on 8 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (5,1), (3,3), (7,3), (1,5), (5,5), (3,7)、(7,7)、(1,9)、(5,9)、(3,11)、(7,11)、(1,13)、(5,13)、 (3,15)、(7,15)；Website 2 map (1,2), (5,2), (3,4), (7,4), (1,6), (5,6)、(3,8)、(7,8)、(1,10)、(5,10)、(3,12)、(7,12)、(1,14)、 (5,14)、(3,16)、(7,16)；Website 3 map (3,1), (7,1), (1,3), (5,3), (3,5)、(7,5)、(1,7)、(5,7)、(3,9)、(7,9)、(1,11)、(5,11)、 (3,13)、(7,13)、(1,15)、(5,15)；Website 4 map (3,2), (7,2), (1,4), (5,4)、(3,6)、(7,6)、(1,8)、(5,8)、(3,10)、(7,10)、(1,12)、 (5,12)、(3,14)、(7,14)、(1,16)、(5,16)；Website 5 map (2,1), (6,1), (4,3)、(8,3)、(2,5)、(6,5)、(4,7)、(8,7)、(2,9)、(6,9)、 (4,11)、(8,11)、(2,13)、(6,13)、(4,15)、(8,15)；Website 6 map (2,2), (6,2)、(4,4)、(8,4)、(2,6)、(6,6)、(4,8)、(8,8)、(2,10)、 (6,10)、(4,12)、(8,12)、(2,14)、(6,14)、(4,16)、(8,16)；Stand Point 7 mapping (4,1), (8,1), (2,3), (6,3), (4,5), (8,5), (2,7), (6,7), (4,9)、(8,9)、(2,11)、(6,11)、(4,13)、(8,13)、(2,15)、(6,15)； Website 8 map (4,2), (8,2), (2,4), (6,4), (4,6), (8,6), (2,8), (6,8)、(4,10)、(8,10)、(2,12)、(6,12)、(4,14)、(8,14)、(2,16)、 (6,16)。
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, the embodiment of the present invention referring to Figure 30 Reflecting for 8 websites and 16 pilot sub-carriers on 8 symbols is differed only in Figure 28 embodiment Penetrate the mapping of 8 websites and 16 pilot sub-carriers on 8 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (5,1), (3,3), (7,3), (4,5), (8,5), (1,7)、(5,7)、(3,9)、(7,9)、(4,11)、(8,11)、(1,13)、(5,13)、 (3,15)、(7,15)；Website 2 map (1,2), (5,2), (3,4), (7,4), (4,6), (8,6)、(1,8)、(5,8)、(3,10)、(7,10)、(4,12)、(8,12)、(1,14)、 (1,14)、(3,16)、(3,16)；Website 4 map (3,1), (7,1), (1,3), (5,3), (2,5)、(6,5)、(3,7)、(7,7)、(1,9)、(5,9)、(2,11)、(6,11)、 (3,13)、(7,13)、(1,15)、(5,15)；Website 4 map (3,2), (7,2), (1,4), (5,4)、(2,6)、(6,6)、(3,8)、(7,8)、(1,10)、(5,10)、(2,12)、 (6,12)、(3,14)、(7,14)、(1,16)、(5,16)；Website 5 map (2,1), (6,1), (4,3)、(8,3)、(1,5)、(5,5)、(2,7)、(6,7)、(4,9)、(8,9)、 (1,11)、(5,11)、(2,13)、(6,13)、(4,15)、(8,15)；Website 6 map (2,2), (6,2)、(4,4)、(8,4)、(1,6)、(5,6)、(2,8)、(6,8)、(4,10)、 (8,10)、(1,12)、(5,12)、(2,14)、(6,14)、(4,16)、(8,16)；Stand Point 7 mapping (4,1), (8,1), (2,3), (6,3), (3,5), (7,5), (4,7), (8,7), (2,9)、(6,9)、(3,11)、(7,11)、(4,13)、(8,13)、(2,15)、(6,15)； Website 8 map (4,2), (8,2), (2,4), (6,4), (3,6), (7,6), (4,8), (8,8)、(2,10)、(6,10)、(3,12)、(7,12)、(4,14)、(8,14)、(2,16)、 (6,16)。
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention, the embodiment of the present invention referring to Figure 31 Reflecting for 8 websites and 16 pilot sub-carriers on 8 symbols is differed only in Figure 28 embodiment Penetrate the mapping of 8 websites and 16 pilot sub-carriers on 8 symbols in mode difference, the embodiment of the present invention Mode is：Website 1 map (1,1), (5,1), (1,3), (5,3), (1,5), (5,5), (1,7)、(5,7)、(1,9)、(5,9)、(1,11)、(5,11)、(1,13)、(5,13)、 (1,15)、(5,15)；Website 2 map (1,2), (5,2), (1,4), (5,4), (1,6), (5,6)、(1,8)、(5,8)、(1,10)、(5,10)、(1,12)、(5,12)、(1,14)、 (5,14)、(1,16)、(5,16)；Website 3 map (2,1), (6,1), (2,3), (6,3), (25)、(6,5)、(2,7)、(6,7)、(2,9)、(6,9)、(2,11)、(6,11)、 (2,13)、(6,13)、(2,15)、(6,15)；Website 4 map (2,2), (6,2), (2,4), (6,4)、(2,6)、(6,6)、(2,8)、(6,8)、(2,10)、(6,10)、(2,12)、 (6,12)、(2,14)、(6,14)、(2,16)、(6,16)；Website 5 map (3,1), (7,1), (3,3)、(7,3)、(3,5)、(7,5)、(3,7)、(7,7)、(3,9)、(7,9)、 (3,11)、(7,11)、(3,13)、(7,13)、(3,15)、(7,15)；Website 6 map (3,2), (7,2)、(3,4)、(7,4)、(3,6)、(7,6)、(3,8)、(7,8)、(3,10)、 (7,10)、(3,12)、(7,12)、(3,14)、(7,14)、(3,16)、(7,16)；Stand Point 7 mapping (4,1), (8,1), (4,3), (8,3), (4,5), (8,5), (4,7), (8,7)、(4,9)、(8,9)、(4,11)、(8,11)、(4,13)、(8,13)、(4,15)、 (8,15)；Website 8 map (4,2), (8,2), (4,4), (8,4), (4,6), (8,6), (4,8)、(8,8)、(4,10)、(8,10)、(4,12)、(8,12)、(4,14)、(8,14)、 (4,16)、(8,16)。
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 32, in present invention implementation In example, the transfer resource estimated for uplink frequency offset of M=3, K=4, L=3, i.e. radio access node distribution Including 3 pilot sub-carriers on 4 symbols and frequency domain in time domain, the quantity of website is 3, and access point will 4 symbols are divided into 2 symbols pair, and first symbol is to including the symbol 1 and symbol 3 in time domain, second Individual symbol is to including the symbol 2 and symbol 4 in time domain, two symbols of each symbol centering are non-conterminous, each Website is identical with pilot sub-carrier mapping mode on two symbols of symbol centering, distinct symbols centering two The mapping mode of website and pilot sub-carrier is differed on symbol, and each website maps at least one symbol pair, Each website is internally at least mapped on a pilot sub-carrier, 3 websites and 4 symbols in the symbol of mapping The mapping mode of 3 pilot sub-carriers is：Website 1 maps (1,1), (3,1), (2,2), (4,2)； Website 2 maps (1,2), (3,2), (2,3), (4,3)；Website 3 map (2,1), (4,1), (1,3)、(3,3).First parameter represents the call number of symbol in bracket, and second parameter represents pilot tone The call number of subcarrier, the call number of pilot sub-carrier is that access point is that pilot tone selected in transmission bandwidth is carried The relative indexing number of ripple.
It should be noted that the packet mode of symbol pair is not limited to this in the present embodiment, for example, it will can accord with Number 1 and symbol 2 be divided into a symbol pair, symbol 3 and symbol 4 are divided into a symbol pair；Or will symbol Number 1 and symbol 4 be divided into a symbol pair, symbol 2 and symbol 3 are a symbol pair.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 33, in present invention implementation In example, the transfer resource estimated for uplink frequency offset of M=3, K=4, L=5, i.e. radio access node distribution Including 5 pilot sub-carriers composition on 4 symbols and frequency domain in time domain, the quantity of website is 3, access O'clock 4 symbols are divided into 2 symbols pair, first symbol to including the symbol 1 and symbol 3 in time domain, Second symbol to including the symbol 2 and symbol 4 in time domain, two symbols of each symbol centering are non-conterminous, Website is identical with pilot sub-carrier mapping mode on two symbols of same symbol centering, distinct symbols centering The mapping mode of website and pilot sub-carrier is differed on two symbols, and each website maps at least one symbol It is right, and each website internally at least maps a pilot sub-carrier, 3 websites and 4 symbols in the symbol of mapping The mapping method of 5 pilot sub-carriers on number can be：Website 1 map (1,1), (3,1), (2,2), (4,2)、(1,4)、(3,4)、(1,5)、(4,5)；Website 2 map (1,2), (3,2), (2,3)、(4,3)、(1,5)、(3,5)；Website 3 map (2,1), (4,1), (1,3), (3,3)、(2,4)、(4,4).First parameter represents the call number of symbol, second parameter in bracket Represent the call number of pilot sub-carrier, the call number of pilot sub-carrier is that access point is to select in transmission bandwidth The relative indexing number of pilot sub-carrier.
It should be noted that the packet mode of symbol pair is not limited to this in the present embodiment, for example, it will can accord with Number 1 and symbol 2 be divided into a symbol pair, symbol 3 and symbol 4 are divided into a symbol pair；Or will symbol Number 1 and symbol 4 be divided into a symbol pair, symbol 2 and symbol 3 are a symbol pair.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 34, in present invention implementation In example, when the transfer resource for being used for uplink frequency offset estimation of M=3, K=4, L=4, i.e. access point distribution includes 4 pilot sub-carriers on 4 symbols and frequency domain on domain, the quantity of website is 3, and access point accords with 4 Number 2 symbols pair are divided into, first symbol is to including the symbol 1 and symbol 3 in time domain, second symbol To including the symbol 2 and symbol 4 in time domain, two symbols of each symbol centering are non-conterminous, same symbol pair In on two symbols website it is identical with the mapping mode of pilot sub-carrier, two symbols of distinct symbols centering The mapping mode of upper website and pilot sub-carrier is differed, and each website maps at least one symbol pair, and often Individual symbol internally maps 4 at least one pilot sub-carrier, 3 websites and 4 symbols in the symbol of mapping The mapping mode of individual pilot sub-carrier is：Website 1 map (1,1), (3,1), (2,2), (4,2), (1,4)、(3,4)；Website 2 maps (1,2), (3,2), (2,3), (4,3)；Website 3 reflects Penetrate (2,1), (4,1), (1,3), (3,3), (2,4), (4,4).First parameter in bracket The call number of symbol is represented, second parameter represents the call number of pilot sub-carrier, the index of pilot sub-carrier Number it is the relative indexing number that access point is the pilot sub-carrier selected in transmission bandwidth.
It should be noted that the packet mode of symbol pair is not limited to this in the present embodiment, for example, it will can accord with Number 1 and symbol 2 be divided into a symbol pair, symbol 3 and symbol 4 are divided into a symbol pair；Or will symbol Number 1 and symbol 4 be divided into a symbol pair, symbol 2 and symbol 3 are a symbol pair.
It is a kind of schematic diagram of mapping pattern provided in an embodiment of the present invention referring to Figure 35, in present invention implementation In example, the transfer resource estimated for uplink frequency offset of M=4, K=4, L=3, i.e. radio access node distribution Including 3 pilot sub-carriers on 4 symbols and frequency domain in time domain, the quantity of website is 4, and access point will 4 symbols are divided into 2 symbols pair, and first symbol is to including the symbol 1 and symbol 3 in time domain, second Individual symbol is to including the symbol 2 and symbol 4 in time domain, two symbols of each symbol centering are non-conterminous, same Website is identical with the mapping mode of pilot sub-carrier on two symbols of symbol centering, distinct symbols centering two The mapping mode of website and pilot sub-carrier is differed on individual symbol, the pilot sub-carrier of each website mapping Quantity is at least one, and the mapping method of 4 websites and 3 pilot sub-carriers on 4 symbols can be： Website 1 maps (1,1), (3,1), (2,2), (4,2)；Website 2 map (1,2), (3,2), (2,3)、(4,3)；Website 3 maps (1,3), (3,3)；Website 4 maps (2,1), (4,1). First parameter represents the call number of symbol in bracket, and second parameter represents the call number of pilot sub-carrier, The call number of pilot sub-carrier is the relative indexing number that access point is the pilot sub-carrier selected in transmission bandwidth.
It should be noted that the packet mode of symbol pair is not limited to this in the present embodiment, for example, it will can accord with Number 1 and symbol 2 be divided into a symbol pair, symbol 3 and symbol 4 are divided into a symbol pair；Or will symbol Number 1 and symbol 4 be divided into a symbol pair, symbol 2 and symbol 3 are a symbol pair.
It is upper line frequency in a kind of multiuser mimo system provided in an embodiment of the present invention referring to Figure 36 The structural representation of deviation estimation device, hereinafter referred to as uplink frequency offset estimation unit, in the upper of the embodiment of the present invention Uplink frequency offset is estimated in a kind of multiuser mimo system of the line frequency deviation estimation device for performing Fig. 1 b Method, involved term and process can refer to the description of Fig. 1 b embodiments, and here is omitted.Upper line frequency Deviation estimation device includes：Resource distribution module 3601, mapping block 3602, sending module 3603 and frequency deviation Computing module 3604.
Resource distribution module 3601, for being distributed on K symbol for M website for uplink frequency offset estimation L pilot sub-carrier, M, L and K be positive integer, and K be even number.
Mapping block 3602, L pilot tone for the M website to be mapped to the K symbol Mapping pattern is generated on carrier wave；Wherein, the K symbol is divided into K/2 symbol pair, same symbol pair Website is identical with the mapping relations of pilot sub-carrier on two interior symbols, on two symbols of distinct symbols pair The mapping relations of website and pilot sub-carrier are differed, and each website mapping at least one in the M website Individual pilot sub-carrier.
Sending module 3603, for sending the mapping pattern to the M website, the mapping pattern is used The inquiry of each website is distinguished corresponding pilot tone on the K symbol and carried in the instruction M website Ripple, and according on corresponding pilot sub-carrier to described access point send upward signal.
Frequency offset calculation module 3604, it is corresponding to upper pilot sub-carrier for each symbol according to reception Each self-corresponding frequency deviation value of M website described in row signal of change.
Optionally, M and L is each L/2 pilot tone son load of website mapping in even number, and the M website Ripple, M=K=2, L=4；Or
M=K=4, L=4；Or
M=K=6, L=4；Or
M=K=8, L=4；Or
M=K=2, L=8；Or
M=K=4, L=8；Or
M=K=6, L=8；Or
M=K=8, L=8；Or
M=K=2, L=16；Or
M=K=4, L=16；Or
M=K=6, L=16；Or
M=K=8, L=16.
Optionally, in the case of K/2 ＞ 1, two symbols of same symbol pair are non-conterminous relation.It is preferred that, Two symbols of same symbol centering are to be spaced between non-conterminous relation, and two symbols of same symbol centering (K/2) -1 symbol.
Optionally, in the case of M=L, L pilot sub-carrier on each symbol and M websites in reflecting one by one Penetrate relation.
Optionally, frequency offset calculation module 3604 specifically for：
Receive the upward signal that the M website is sent on each self-corresponding pilot sub-carrier；
Two upward signals that targeted sites are sent on same symbol internally same pilot sub-carrier are calculated respectively Phase difference, frequency deviation value of the targeted sites on the pilot sub-carrier is obtained according to phase difference；Wherein, The targeted sites are any one in the M website；
Each self-corresponding frequency deviation value of at least one pilot sub-carrier of the targeted sites mapping is obtained, and will At least one frequency deviation value obtains the frequency deviation value of the targeted sites after being weighted averagely.
Optionally, frequency offset calculation module 3604 specifically for：
Target pilot subcarrier is determined at least one pilot sub-carrier for determining the targeted sites mapping, with And at least one the symbol centering mapped from the targeted sites determines aiming symbol pair；Wherein, the target Website is any one in the M website；
Calculate two that the targeted sites are internally sent on the target pilot subcarrier in aiming symbol it is up The phase difference of signal, and obtain according to phase difference the frequency deviation value of the targeted sites.
The embodiment of the present invention and method Fig. 1 b embodiment one are based on same design, its technique effect brought Identical, concrete principle can refer to the description of embodiment of the method one, and here is omitted.
Accordingly, another embodiment provides uplink frequency offset estimation dress in multiuser mimo system (not shown) is put, applied to WLAN, including processing unit, for being M on K symbol Website distributes the L pilot sub-carrier estimated for uplink frequency offset, and M, L and K are positive integer, and K is Even number；The M website is mapped on L pilot sub-carrier of the K symbol and generates mapping pattern； Wherein, the K symbol is divided into K/2 symbol pair, on two internal symbols of same symbol website and The mapping relations of pilot sub-carrier are identical, and website and pilot sub-carrier reflects on two symbols of distinct symbols pair The relation of penetrating is differed, and each website maps at least one pilot sub-carrier in the M website；To described M website sends the mapping pattern, and the mapping pattern is used to indicate each website in the M website Corresponding pilot sub-carrier is distinguished in inquiry on the K symbol, and according on corresponding pilot sub-carrier Send upward signal；Institute is calculated to the upper corresponding upward signal of pilot sub-carrier according to each symbol of reception State each self-corresponding frequency deviation value of M website.The structure and content of specific mapping pattern, may be referred to foregoing Each embodiment, here is omitted.Processing unit can be general processor, digital signal processor, Application specific integrated circuit, field programmable gate array or other PLDs, discrete gate or crystal Pipe logical device, discrete hardware components, it is possible to achieve or the disclosed each side in the execution embodiment of the present invention Method, step and logic diagram.General processor can be microprocessor or any conventional processor etc.. The step of method with reference to disclosed in the embodiment of the present invention, can be embodied directly in hardware processor and perform completion, Or perform completion with the hardware in processor and software module combination.
It is a kind of another structural representation of access point provided in an embodiment of the present invention, in this hair referring to Figure 37 In bright embodiment, access point 37 includes processing unit 3701, memory 3702 and transceiver 3703.Transmitting-receiving Device 3703 is used for the transceiving data between external equipment.The quantity of processing unit 3701 in access point 37 can To be one or more.In some embodiments of the present invention, processing unit 3701, memory 3702 and transmitting-receiving Device 3703 can be connected by bus system, and wherein bus system is in addition to including data/address bus, in addition to power supply Bus, controlling bus and status signal bus in addition.But for the sake of clear explanation, by various buses in figure All it is designated as bus system.Access point 37 can be used for performing the method shown in Fig. 1 b.Related on the present embodiment And term implication and citing, may be referred to the corresponding embodiments of Fig. 1 b.Here is omitted.
Uplink frequency offset method of estimation can in the multiuser mimo system that the embodiments of the present invention are disclosed To be realized applied in processing unit 3701, or by processing unit 3701.It is above-mentioned in implementation process Each step of method can pass through the integrated logic circuit of the hardware in processing unit 3701 or software form Instruction is completed.Processing unit 3701 can be general processor, digital signal processor, application specific integrated circuit, Field programmable gate array or other PLDs, discrete gate or transistor logic, point Vertical nextport hardware component NextPort, it is possible to achieve or disclosed each method, step and logic in the execution embodiment of the present invention Block diagram.General processor can be microprocessor or any conventional processor etc..With reference to present invention implementation The step of method disclosed in example, can be embodied directly in hardware processor and perform completion, or with processor Hardware and software module combination perform completion.Software module can be located at random access memory, flash memory, read-only This area such as memory, programmable read only memory or electrically erasable programmable memory, register is ripe Storage medium in.The storage medium is located at memory 3702, and processing unit 3701 reads memory 3702 In information, with reference to its hardware complete the above method the step of.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text means and real Apply the relevant special characteristic of example, structure or characteristic include at least one embodiment of the present invention in.Therefore, " in one embodiment " or " in one embodiment " occurred everywhere in entire disclosure not necessarily refers to Identical embodiment.In addition, these specific feature, structure or characteristics can be combined in any suitable manner In one or more embodiments.In various embodiments of the present invention, the size of the sequence number of above-mentioned each process The priority of execution sequence is not meant to, the execution sequence of each process should be determined with its function and internal logic, Any limit is constituted without tackling the implementation process of the embodiment of the present invention.
In addition, the terms " system " and " network " are often used interchangeably herein.Herein Term "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of relations, For example, A and/or B, can be represented：Individualism A, while there is A and B, individualism B this three The situation of kind.In addition, character "/" herein, it is a kind of relation of "or" to typically represent forward-backward correlation object.
It should be understood that in embodiments of the present invention, " B " corresponding with A represents that B is associated with A, according to A can determine B.It is also to be understood that determining that B is not meant to determine B only according to A according to A, also B can be determined according to A and/or other information.
Those of ordinary skill in the art with reference to what the embodiments described herein was described it is to be appreciated that respectively show The unit and algorithm steps of example, can be realized with electronic hardware, computer software or the combination of the two, In order to clearly demonstrate the interchangeability of hardware and software, in the above description according to function in general manner Describe the composition and step of each example.These functions are performed with hardware or software mode actually, are depended on In the application-specific and design constraint of technical scheme.Professional and technical personnel can be to each specific application To realize described function using distinct methods, but this realization is it is not considered that beyond the model of the present invention Enclose.
It is apparent to those skilled in the art that, it is for convenience of description and succinctly, above-mentioned to retouch The specific work process of system, device and the unit stated, may be referred to corresponding in preceding method embodiment Journey, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, device and side Method, can be realized by another way.For example, device embodiment described above is only schematic , for example, the division of the unit, only a kind of division of logic function, can there is another when actually realizing Outer dividing mode, such as multiple units or component can combine or be desirably integrated into another system, or Some features can be ignored, or not perform.In addition, shown or discussed coupling or direct each other Coupling or communication connection can be INDIRECT COUPLING or the communication connection by some interfaces, device or unit, Can be electric, mechanical or other form connections.
The unit illustrated as separating component can be or may not be it is physically separate, as The part that unit is shown can be or may not be physical location, you can with positioned at a place, or It can also be distributed on multiple NEs.It can select according to the actual needs therein some or all of Unit realizes the purpose of scheme of the embodiment of the present invention.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, Can also be that unit is individually physically present or two or more units are integrated in a list In member.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ SFU software functional unit Form realize.
Through the above description of the embodiments, it is apparent to those skilled in the art that this hair It is bright can be realized with hardware, or firmware realizes, or combinations thereof mode is realized.Realized when using software When, above-mentioned functions can be stored in in computer-readable medium or are used as one on computer-readable medium Or multiple instruction or code are transmitted.Computer-readable medium includes computer-readable storage medium and communication media, Wherein communication media includes being easy to any medium that computer program is transmitted from a place to another place. Storage medium can be any usable medium that computer can be accessed.As example but it is not limited to：Computer Computer-readable recording medium can include RAM, ROM, EEPROM, CD-ROM or other optical disc storages, disk Storage medium or other magnetic storage apparatus or can be used in carrying or store with instruction or data structure The desired program code of form and can by computer access any other medium.In addition.Any connection Can be suitably turn into computer-readable medium.If for example, software be using coaxial cable, optical fiber cable, Twisted-pair feeder, numeral STA lines (DSL) or such as wireless technology of infrared ray, radio and microwave etc From website, server or other remote sources transmit, then coaxial cable, optical fiber cable, twisted-pair feeder, The wireless technology of DSL or such as infrared ray, wireless and microwave etc be included in belonging to medium it is fixing in. As used in the present invention, disk (Disk) and dish (disc) include compression laser disc (CD), laser disc, light Dish, Digital Versatile Disc (DVD), floppy disk and Blu-ray Disc, the replicate data of the usual magnetic of which disk, And dish is then with laser come optical replicate data.Above combination above should also be as being included in computer-readable medium Within protection domain.
In a word, the preferred embodiment of technical solution of the present invention is the foregoing is only, this is not intended to limit The protection domain of invention.Within the spirit and principles of the invention, any modification for being made, equivalent substitution, Improve etc., it should be included in the scope of the protection.

Claims (12)

1. uplink frequency offset method of estimation in a kind of multiuser mimo system, it is characterised in that including：
Access point distributes L pilot tone estimated for uplink frequency offset for M website on K symbol and carried Ripple；Wherein, M, L and K are positive integer, and K is even number；
The M website is mapped on L pilot sub-carrier of the K symbol and generated by described access point Mapping pattern；Wherein, the K symbol is divided into K/2 symbol pair, two internal symbols of same symbol Website is identical with the mapping relations of pilot sub-carrier on number, website and pilot tone on two symbols of distinct symbols pair The mapping relations of subcarrier are differed, and in the M website each website map at least one symbol pair and In at least one described symbol to being respectively mapped to a few pilot sub-carrier；
Described access point sends the mapping pattern to the M website, and the mapping pattern is used to indicate institute State each website inquiry in M website and corresponding pilot sub-carrier, Yi Jigen are distinguished on the K symbol According to corresponding pilot sub-carrier upward signal is sent to described access point；
Described access point calculates institute according to each symbol of reception to the upper corresponding upward signal of pilot sub-carrier State each self-corresponding frequency deviation value of M website.
2. the method as described in claim 1, it is characterised in that M and L is even number, and the M is individual Each website maps L/2 pilot sub-carrier in website,
M=K=2, L=4；Or
M=K=4, L=4；Or
M=K=6, L=4；Or
M=K=8, L=4；Or
M=K=2, L=8；Or
M=K=4, L=8；Or
M=K=6, L=8；Or
M=K=8, L=8；Or
M=K=2, L=16；Or
M=K=4, L=16；Or
M=K=6, L=16；Or
M=K=8, L=16.
3. the method as described in power requires 1, it is characterised in that in the case of M=L, the L on each symbol Individual pilot sub-carrier is with M website in mapping relations one by one.
4. the method as described in claim 1-3 any one, described access point is according to each symbol of reception Calculating each self-corresponding frequency deviation value of M website to the upper corresponding upward signal of pilot sub-carrier includes：
Described access point receives the up letter that the M website is sent on each self-corresponding pilot sub-carrier Number；
Described access point calculates two that targeted sites are sent on same symbol internally same pilot sub-carrier respectively The phase difference of individual upward signal, frequency deviation of the targeted sites on the pilot sub-carrier is obtained according to phase difference Value；Wherein, the targeted sites are any one in the M website；
Described access point obtains each self-corresponding frequency deviation of at least one pilot sub-carrier of the targeted sites mapping Value, and by least one frequency deviation value be weighted it is average after obtain the frequency deviation values of the targeted sites.
5. the method as described in claim 1-3 any one, it is characterised in that described access point is according to connecing It is each self-corresponding that each symbol received calculates the M website to the upper corresponding upward signal of pilot sub-carrier Frequency deviation value includes：
Described access point determines to determine target pilot at least one pilot sub-carrier of the targeted sites mapping Subcarrier, and at least one the symbol centering mapped from the targeted sites determine aiming symbol pair；Wherein, The targeted sites are any one in the M website；
Described access point calculates the targeted sites and sent on aiming symbol internally the target pilot subcarrier Two upward signals phase difference, and obtain according to phase difference the frequency deviation value of the targeted sites.
6. uplink frequency offset estimation unit in a kind of multiuser mimo system, it is characterised in that including：
Resource distribution module, for distributing the L estimated for uplink frequency offset on K symbol for M website Individual pilot sub-carrier, M, L and K are positive integer, and K is even number；
Mapping block, the L pilot sub-carrier for the M website to be mapped to the K symbol Generate mapping pattern；Wherein, the K symbol is divided into K/2 symbol pair, same symbol it is internal two Website is identical with the mapping relations of pilot sub-carrier on individual symbol, on two symbols of distinct symbols pair website and The mapping relations of pilot sub-carrier are differed, and each website maps at least one pilot tone in the M website Subcarrier；
Sending module, for sending the mapping pattern to the M website, the mapping pattern is used to refer to Show that corresponding pilot sub-carrier is distinguished in the inquiry of each website on the K symbol in the M website, with And send upward signal according on corresponding pilot sub-carrier；
Frequency offset calculation module, for each symbol according to reception to the upper corresponding up letter of pilot sub-carrier Number calculate each self-corresponding frequency deviation value of M website.
7. device as claimed in claim 6, it is characterised in that M and L is even number, and the M is individual Each website maps L/2 pilot sub-carrier in website,
M=K=2, L=4；Or
M=K=4, L=4；Or
M=K=6, L=4；Or
M=K=8, L=4；Or
M=K=2, L=8；Or
M=K=4, L=8；Or
M=K=6, L=8；Or
M=K=8, L=8；Or
M=K=2, L=16；Or
M=K=4, L=16；Or
M=K=6, L=16；Or
M=K=8, L=16.
8. the device as described in power requires 6, it is characterised in that in the case of M=L, the L on each symbol Individual pilot sub-carrier is with M websites in mapping relations one by one.
9. the device as described in claim 6-8 any one, the frequency offset calculation module specifically for：
Receive the upward signal that the M website is sent on each self-corresponding pilot sub-carrier；
Two upward signals that targeted sites are sent on same symbol internally same pilot sub-carrier are calculated respectively Phase difference, frequency deviation value of the targeted sites on the pilot sub-carrier is obtained according to phase difference；Wherein, The targeted sites are any one in the M website；
Each self-corresponding frequency deviation value of at least one pilot sub-carrier of the targeted sites mapping is obtained, and will At least one frequency deviation value obtains the frequency deviation value of the targeted sites after being weighted averagely.
10. the device as described in claim 6-8 any one, it is characterised in that the frequency offset calculation module Specifically for：
Target pilot subcarrier is determined at least one pilot sub-carrier for determining the targeted sites mapping, with And at least one the symbol centering mapped from the targeted sites determines aiming symbol pair；Wherein, the target Website is any one in the M website；
Calculate two that the targeted sites are internally sent on the target pilot subcarrier in aiming symbol it is up The phase difference of signal, and obtain according to phase difference the frequency deviation value of the targeted sites.
11. a kind of access point, it is characterised in that including the device as described in claim 6-10 any one.
12. a kind of communication system, it is characterised in that including access point and M website,
Described access point is that the M website distributes the L estimated for uplink frequency offset and led on K symbol Frequency subcarrier；Wherein, M, L and K are positive integer, and K is even number；
The M website is mapped to generate on L pilot sub-carrier of K symbol by described access point to be mapped Pattern；Wherein, the K symbol is divided on K/2 symbol pair, two internal symbols of same symbol Website is identical with the mapping relations of pilot sub-carrier, and website and pilot tone are carried on two symbols of distinct symbols pair The mapping relations of ripple are differed, and each website maps at least one pilot sub-carrier in the M website；
Described access point sends the mapping pattern to the M website；
Corresponding pilot sub-carrier is distinguished in the inquiry of each website on the K symbol in the M website, And according on corresponding pilot sub-carrier to described access point send upward signal；
Described access point calculates institute according to each symbol of reception to the upper corresponding upward signal of pilot sub-carrier State each self-corresponding frequency deviation value of M website.
CN201610068730.4A 2016-01-30 2016-01-30 Uplink frequency offset method of estimation, relevant device and system in MU-MIMO system Pending CN107040295A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110661741A (en) * 2018-06-28 2020-01-07 华为技术有限公司 Synchronous carrier frequency signal sending method, receiving method and device
CN112491751A (en) * 2019-09-12 2021-03-12 华为技术有限公司 Method, station and access point for uplink multi-station channel estimation
CN113055995A (en) * 2019-12-26 2021-06-29 中兴通讯股份有限公司 Frequency offset estimation method and device
CN113452635A (en) * 2020-03-27 2021-09-28 华为技术有限公司 Method, station and access point for frequency offset estimation

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110661741A (en) * 2018-06-28 2020-01-07 华为技术有限公司 Synchronous carrier frequency signal sending method, receiving method and device
CN110661741B (en) * 2018-06-28 2022-03-29 华为技术有限公司 Synchronous carrier frequency signal sending method, receiving method and device
CN112491751A (en) * 2019-09-12 2021-03-12 华为技术有限公司 Method, station and access point for uplink multi-station channel estimation
CN112491751B (en) * 2019-09-12 2022-07-29 华为技术有限公司 Method, station and access point for uplink multi-station channel estimation
US11902054B2 (en) 2019-09-12 2024-02-13 Huawei Technologies Co., Ltd. Uplink multi-station channel estimation method, station, and access point
CN113055995A (en) * 2019-12-26 2021-06-29 中兴通讯股份有限公司 Frequency offset estimation method and device
CN113055995B (en) * 2019-12-26 2023-10-27 中兴通讯股份有限公司 Frequency offset estimation method and device
CN113452635A (en) * 2020-03-27 2021-09-28 华为技术有限公司 Method, station and access point for frequency offset estimation
WO2021190527A1 (en) * 2020-03-27 2021-09-30 华为技术有限公司 Frequency offset estimation method, station, and access point
CN113452635B (en) * 2020-03-27 2022-12-27 华为技术有限公司 Method, station and access point for frequency offset estimation

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Application publication date: 20170811