CN105072061B - Wireless LAN communication method and equipment - Google Patents
Wireless LAN communication method and equipment Download PDFInfo
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- CN105072061B CN105072061B CN201510395435.5A CN201510395435A CN105072061B CN 105072061 B CN105072061 B CN 105072061B CN 201510395435 A CN201510395435 A CN 201510395435A CN 105072061 B CN105072061 B CN 105072061B
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Abstract
The present embodiments relate to Wireless LAN communication methods and device.This method includes generating message frame, which includes pilot information, which is used to indicate in resource block the position of pilot signal in each child resource block in multiple child resource blocks；Send the message frame.The Wireless LAN communication method and equipment of the embodiment of the present invention, generate and send the message frame including pilot information, the pilot information is used to indicate the position of pilot signal in each child resource block in resource block, so as to avoid for different user using same position carrying pilot signal when caused by cannot correctly estimate valid data the problem of, using the insertion method of dynamic pilot frequency locations, channel estimation ability can be enhanced, improve the handling capacity of system.
Description
Technical field
The present invention relates to wireless communication field more particularly to Wireless LAN communication method and equipment.
Background technique
Next-generation Wireless Fidelity (Wireless Fidelity, referred to as " Wi-Fi ") has been set up in May, 2013,802.11
The efficient WLAN of the study group of technology (High Efficiency WLAN, referred to as " HEW "), main research point is to improve
Handling capacity more higher than existing Wi-Fi technology；It improves the effective use efficiency of frequency spectrum, improve user experience (Quality of
Experience, referred to as " QoE "), existing Wi-Fi technology is only improved service quality and is fitted than existing Wi-Fi technology
Answer the communication environment of more crypto set.
In order to improve the utilization efficiency of frequency spectrum, 802.11ax (HEW) task groups will use orthogonal frequency division multiple access
(Orthogonal Frequency Division Multiple Access, referred to as " OFDMA ") technology carries out the biography of data
It is defeated, and define and use the number of subcarrier respectively in 20MHz, 40MHz, 80MHz and 160MHz.
Orthogonal frequency division multiplexing (Orthogonal is used in 802.11a, 802.11n and 802.11ac
Frequency Division Multiplexing, referred to as " OFDM ") technology, fixed pilot tone is used for the estimation of channel
The mode of the position signal (Pilot), when for example carrying out data transmission under the channel of 20MHz, the position of Pilot be (- 21, -7,
7,21), the position of Pilot is fixed, and in 802.11ax, due to using OFDMA technology, each user is come
It says since the degree of its fading channel is different, if using the distribution position of the Pilot in existing Wi-Fi standard, no
It can be for each with correctly estimating effective data per family.
Summary of the invention
The present invention provides a kind of Wireless LAN communication method and equipment, can enhance channel estimation ability, improve system
The handling capacity of system.
In a first aspect, a kind of Wireless LAN communication method is provided, this method comprises: generating message frame, the message frame
Comprising pilot information, which is used to indicate in resource block and leads in each child resource block in multiple child resource blocks
The position of frequency signal；Send the message frame.
With reference to first aspect, in a kind of implementation of first aspect, the number of the pilot signal is provided by every height
The number of source block sub-carriers determines.
With reference to first aspect and its above-mentioned implementation, in another implementation of first aspect, when multiple son
When the number of each child resource block sub-carriers is identical in resource block, the position of the pilot signal is not identical.
With reference to first aspect and its above-mentioned implementation, in another implementation of first aspect, when multiple son
When the number of each child resource block sub-carriers is not identical in resource block, the position of the pilot signal is not identical.
With reference to first aspect and its above-mentioned implementation, in another implementation of first aspect, in the message frame
This pilot information is carried in physical header.
With reference to first aspect and its above-mentioned implementation, in another implementation of first aspect, in the message frame
The pilot information is carried in physical header in signal domain.
Second aspect provides a kind of Wireless LAN communication method, this method comprises: receiving message frame, the message frame
Comprising pilot information, which is used to indicate in resource block and leads in each child resource block in multiple child resource blocks
The position of frequency signal；According to the message frame, the pilot signal in each child resource block is received.
Leading for this is carried in the message frame in physical header in a kind of implementation of second aspect in conjunction with second aspect
Frequency signal message.
In conjunction with second aspect and its above-mentioned implementation, in another implementation of second aspect, in the message frame
The pilot information is carried in physical header in signal domain.
The third aspect provides a kind of equipment of wireless LAN communication, which includes: generation module, for generating
Message frame, the message frame include pilot information, which is used to indicate in resource block in multiple child resource blocks
The position of pilot signal in each child resource block；Sending module, for sending the message frame of generation module generation.
In conjunction with the third aspect, in a kind of implementation of the third aspect, the number of the pilot signal is provided by every height
The number of source block sub-carriers determines.
In conjunction with the third aspect and its above-mentioned implementation, in another implementation of the third aspect, when multiple son
When the number of each child resource block sub-carriers is identical in resource block, the position of the pilot signal is not identical.
In conjunction with the third aspect and its above-mentioned implementation, in another implementation of the third aspect, when multiple son
When the number of each child resource block sub-carriers is not identical in resource block, the position of the pilot signal is not identical.
In conjunction with the third aspect and its above-mentioned implementation, in another implementation of the third aspect, in the message frame
This pilot information is carried in physical header.
In conjunction with the third aspect and its above-mentioned implementation, in another implementation of the third aspect, in the message frame
The pilot information is carried in physical header in signal domain.
Fourth aspect provides a kind of equipment of wireless LAN communication, which includes: the first receiving module, is used for
Message frame is received, which includes pilot information, which is used to indicate multiple child resources in resource block
In block in each child resource block pilot signal position；Second receiving module, for being somebody's turn to do according to first receiving module is received
Message frame receives the pilot signal in each child resource block.
Leading for this is carried in the message frame in physical header in a kind of implementation of fourth aspect in conjunction with fourth aspect
Frequency signal message.
In conjunction with fourth aspect and its above-mentioned implementation, in another implementation of fourth aspect, in the message frame
The pilot information is carried in physical header in signal domain.
Based on the above-mentioned technical proposal, the Wireless LAN communication method and equipment of the embodiment of the present invention, generates and sends packet
The message frame of pilot information is included, which is used to indicate in resource block pilot signal in each child resource block
Position receives the pilot signal in child resource block in order to which receiving end is according to the message frame received, so as to avoid for
The problem of cannot correctly estimating valid data caused by when different user carries pilot signal using same position, using dynamic
Pilot frequency locations insertion method, channel estimation ability can be enhanced, improve the handling capacity of system.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the schematic flow chart of Wireless LAN communication method according to an embodiment of the present invention.
Fig. 2 is the schematic flow chart of Wireless LAN communication method according to another embodiment of the present invention.
Fig. 3 is the schematic block diagram of wireless LAN communication equipment according to an embodiment of the present invention.
Fig. 4 is the schematic block diagram of wireless LAN communication equipment according to another embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is a part of the embodiments of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, those of ordinary skill in the art's every other reality obtained without making creative work
Example is applied, all should belong to the scope of protection of the invention.
Fig. 1 shows the schematic flow chart of Wireless LAN communication method 100 according to an embodiment of the present invention, this method
100 can be executed by access point (Access Point, referred to as " AP ").As shown in Figure 1, this method 100 includes:
S110 generates message frame, which includes pilot information, which is used to indicate resource block
In in multiple child resource blocks in each child resource block pilot signal position；
S120 sends the message frame.
Therefore, the Wireless LAN communication method of the embodiment of the present invention, by generating and sending including pilot information
Message frame, which is used to indicate the position of pilot signal in each child resource block in resource block, to avoid
It the problem of for different user using cannot correctly estimate valid data caused by when same position carrying pilot signal, adopts
With the insertion method of dynamic pilot frequency locations, channel estimation ability can be enhanced, improve the handling capacity of system.
In S110, message frame is can be generated in access point, which may include pilot information, the pilot signal
Information is used to indicate in resource block the position of pilot signal in each child resource block in multiple child resource blocks.Specifically, exist
In 802.11ax, resource block can be divided into multiple child resource blocks of different sizes in different size of channel width, for example,
The channel width of 20MHz can be divided into n sub- resource blocks, include 26 subcarriers in each child resource block；It is further divided into m+
1 sub- resource block, it includes 26 there are one child resource block that each child resource block, which includes 52 subcarriers, in m sub- resource blocks
Subcarrier.For different size of child resource block, the number of pilot signal is determining, it may for example comprise the son of 26 subcarriers
It include 2 pilot signals in resource block；It include 4 pilot signals in child resource block including 52 subcarriers.And every height money
The position of pilot signal is not fixed in source block, and access point generates the message frame including pilot information, the pilot information
It is used to indicate the position of pilot signal in each child resource block.
In embodiments of the present invention, as shown in table 1, under different channels bandwidth, for the subcarrier for including in child resource block
Number is different, and the number for the subcarrier for including in each child resource block determines of pilot signal (pilot) in the child resource block
Number, but the position of pilot signal is not fixed in each child resource block, for example, channel width is 20MHz, as shown in table 1, child resource
The quantity type for the subcarrier for including in block can there are three types of, respectively tri- kinds of n*26, m*52+26 and L*106+26.For every
A sub- resource block includes the case where 26 subcarriers, i.e. n*26, may include 2 pilot signals in each child resource block, the two
Which position is pilot signal be not fixed in 26 subcarriers, then for the position of two pilot signals in the child resource block
Can haveKind combination, C is number of combinations,It can be expressed as formula (1):
Specifically, for every kind of channel width, the combination of number of subcarriers type, the quantity of pilot signal and position
It can be as shown in table 1.
Table 1
Optionally, as one embodiment, for example, under the channel width of 20MHz, if each child resource block in resource block
In include 26 subcarriers, i.e., in the case that resource block is divided into n*26 subcarrier, the row of the position pilot signal (Pilot)
Number of columns is up toIt is contemplated that actual operation, the position of possible Pilot is only several, such as the position of Pilot
Only 4 kinds, position can be (- 12,12), (- 9 ,+9), (- 7,7) and (- 4,4), but the present invention is not limited thereto.
Optionally, as one embodiment, for example, under the channel width of 20MHz, if in child resource block in resource block
Including 52 subcarriers, in the case that the subcarrier of resource block is divided into m*52+26, for the child resource of 52 subcarriers
The number of the arrangement of block, the position Pilot is up toIt is contemplated that actual operation, the position of possible Pilot is only several,
Such as the position of Pilot is only 4 kinds, position can for (- 25, -22,22,25), (- 23, -17 ,+17,23), (- 19, -11,
11,19) and (- 21, -9,9,21).
Optionally, as one embodiment, for example, for including the case where 106 subcarriers, such as son in child resource block
In the case that carrier wave is divided into l*106+26, the number of the arrangement of the position Pilot is up toIt is contemplated that actual behaviour
Make, the position of possible Pilot is only several, such as the position of Pilot is only 4 kinds, position can be (- 100, -50,50,
100), (- 90, -40 ,+40,90), (- 70, -30,30,70) and (- 80, -20,20,80).
Optionally, as one embodiment, for example, for including the case where 242 subcarriers, such as son in child resource block
In the case that carrier wave is divided into w*242, the number of the arrangement of the position Pilot is up toIt is contemplated that actual operation, it can
Can Pilot position it is only several, such as the position of Pilot is only 4 kinds, position can for (- 230, -210, -190, -
120,120,190,210,230), (- 220, -200, -180, -160,160,180,200,220), (- 240, -210, -180, -
150,150,180,210,240) and (- 215, -195, -165, -105,105,165,295,215)；
Optionally, as one embodiment, for example, for including the case where 484 subcarriers, such as son in child resource block
In the case that carrier wave is divided into r*484, the number of the arrangement of the position Pilot is up toIt is contemplated that actual operation, it can
Can Pilot position it is only several, such as the position of Pilot is only 4 kinds, one of position can for (- 420, -400, -
380, -360, -340, -320, -300, -280,280,300,320,340,360,380,400,420).
Optionally, as one embodiment, for example, in the case where for t*996 subcarrier, the arrangement of the position Pilot
Quantity is up toIt is contemplated that actual operation, the position of possible Pilot is only several, for example, Pilot position only
Be 4 kinds, one of position can for (- 420, -400, -380, -360, -340, -320, -300, -280,280,300,
320,340,360,380,400,420).
In embodiments of the present invention, determining pilot information can pass through one or more byte representations.Specifically,
For example, can use a byte, i.e. 8 bits indicate the pilot information, wherein three bits are used to indicate child resource
The quantity of block sub-carriers, five bits are used to indicate the position coordinates of the pilot signal in the child resource block, and the present invention is not
It is limited to this.
Specifically, child resource block sub-carriers quantity information can be indicated with three bits, " 000 " indicates current child resource
It include 26 subcarriers in block, similarly " 001 " indicates 52, and " 010 " indicates 106, and " 011 " indicates 242, " 100 " table
Show 484, " 101 " indicate 996；The number of child resource block sub-carriers can also be indicated with more bit numbers, the present invention
It is not limited to this.
Optionally, in embodiments of the present invention, it can indicate that pilot signal is specific in child resource block by five bits
Position coordinates, can be with for the difference for the subcarrier number for including in child resource block for example, for five bits " 00001 "
It is used to indicate different coordinate positions: in the case where 26 subcarriers, can be with the position of " 00001 " expression Pilot (-
12,12)；In the case where 52 subcarriers, it can indicate that the position of Pilot is (- 25, -22,22,25) with " 00001 "；?
In the case where 106 subcarriers, it can indicate that the position of Pilot is (- 100, -50,50,100) with " 00001 "；In 242 sons
In the case where carrier wave, can be with the position of " 00001 " expression Pilot (- 220, -200, -180, -160,160,180,200,
220)；In the case where 484 subcarriers, can be with the position of " 00001 " expression Pilot (- 420, -400, -380, -
360, -340, -320, -300, -280,280,300,320,340,360,380,400,420)；996 subcarriers the case where
Under, can be with the position of " 00001 " expression Pilot (- 420, -400, -380, -360, -340, -320, -300, -280,
280,300,320,340,360,380,400,420), the present invention is not limited thereto.
In S120, determining message frame is sent to website (STA) by access point.It specifically, include leading in the message frame
Frequency signal message, can be by carrying the pilot signal in the physical header in the message, for example, the signal domain in the physical header carries
The pilot information of the message frame can be encapsulated in signal domain B SIG-B subdomain by the pilot information, access point, and
The distribution of field is carried out to the access website of each distribution by the way of sequence.
It should be understood that in various embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to execute suitable
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
Therefore, the Wireless LAN communication method of the embodiment of the present invention, by generating and sending including pilot information
Message frame, which is used to indicate the position of pilot signal in each child resource block in resource block, to avoid
It the problem of for different user using cannot correctly estimate valid data caused by when same position carrying pilot signal, adopts
With the insertion method of dynamic pilot frequency locations, channel estimation ability can be enhanced, improve the handling capacity of system.
Above in conjunction with Fig. 1, wireless local area Netcom according to an embodiment of the present invention is described in detail from the angle of transmitting terminal
Letter method describes Wireless LAN communication method according to an embodiment of the present invention from the angle of receiving end below in conjunction with Fig. 2.
Fig. 2 shows the schematic flow charts of Wireless LAN communication method 200 according to another embodiment of the present invention, should
Method 200 can be executed by website (Station, referred to as " STA ").As shown in Fig. 2, this method 200 includes:
S210 receives the message frame that access point is sent, which includes pilot information, which uses
In instruction resource block in multiple child resource blocks in each child resource block pilot signal position；
S220 receives the pilot signal in each child resource block according to the message frame.
Therefore, the Wireless LAN communication method of the embodiment of the present invention receives the message frame including pilot information, should
Pilot information is used to indicate the position of pilot signal in each child resource block in resource block, true according to the pilot information
The position of pilot signal in sub-resource block, when so as to avoid for different user using same position carrying pilot signal
Caused by the problem of cannot correctly estimating valid data, using the insertion method of dynamic pilot frequency locations, channel can be enhanced
Estimated capacity improves the handling capacity of system.
In S210, website receives the message frame that access point is sent, which includes pilot information, pilot tone letter
Number information is used to indicate in resource block the position of pilot signal in each child resource block in multiple child resource blocks.Optionally, this disappears
The pilot information can be carried in physical header in breath frame, it specifically, can be by being carried in the signal domain in the physical header
The pilot information is stood for example, the pilot information of the message frame can be encapsulated in signal domain B SIG-B subdomain
Point determines the pilot information for belonging to the website in the SIG-B subdomain.
In S220, website determines the pilot tone in child resource block according to the pilot information in the message frame received
The position of signal, and receive the pilot signal.For example, the pilot signal in the message frame occupies eight bits, first three bit is
" 000 ", being used to indicate includes 26 subcarriers in the child resource block, and rear five bits are " 00001 ", is used to indicate the child resource
The position of pilot signal is (- 12,12) in block.In another example first three bit is " 010 ", it is used to indicate in the child resource block and wraps
Include 106 bits, rear five bits are " 00001 ", the position for being used to indicate pilot signal in the child resource block be (- 100 ,-
50,100,50), the present invention is not limited thereto.Website can determine in current child resource block according to the pilot information and include
Subcarrier number, the specific location of pilot signal in the subcarrier can also be determined, so as to receive the child resource block
In pilot signal.
It should be understood that in various embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to execute suitable
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
Therefore, the Wireless LAN communication method of the embodiment of the present invention receives the message frame including pilot information, should
Pilot information is used to indicate the position of pilot signal in each child resource block in resource block, true according to the pilot information
The position of pilot signal in sub-resource block, when so as to avoid for different user using same position carrying pilot signal
Caused by the problem of cannot correctly estimating valid data, using the insertion method of dynamic pilot frequency locations, channel can be enhanced
Estimated capacity improves the handling capacity of system.
Above in conjunction with Fig. 1 to Fig. 2, Wireless LAN communication method according to an embodiment of the present invention is described in detail, under
Face will describe wireless LAN communication equipment according to an embodiment of the present invention in conjunction with Fig. 3 to Fig. 4.
Fig. 3 shows the schematic block diagram of wireless LAN communication equipment 300 according to an embodiment of the present invention, optionally,
The equipment 300 can be access point.As shown in figure 3, the equipment 300 includes:
Generation module 310, for generating message frame, which includes pilot information, which uses
In instruction resource block in multiple child resource blocks in each child resource block pilot signal position；
Sending module 320, for sending the message frame of the generation module 310 generation.
Therefore, the wireless LAN communication equipment of the embodiment of the present invention, is generated by generation module and sending module is sent out
Message frame is sent, which includes pilot information, which is used to indicate each child resource block in resource block
The position of middle pilot signal, so as to avoid for different user using same position carrying pilot signal when caused by cannot
The problem of correct estimation valid data, using the insertion method of dynamic pilot frequency locations, channel estimation ability can be enhanced, improves
The handling capacity of system.
In embodiments of the present invention, wireless LAN communication equipment, such as access point are disappeared by the generation of generation module 310
Frame is ceased, which may include pilot information, which is used to indicate multiple child resource blocks in resource block
In in each child resource block pilot signal position.Specifically, in 802.11ax, resource block in different size of channel width
Multiple child resource blocks of different sizes can be divided into, for example, the channel width of 20MHz, can be divided into n sub- resource blocks, each
It include 26 subcarriers in child resource block；It is further divided into m+1 sub- resource blocks, each child resource block packet in m sub- resource blocks
52 subcarriers are included, include 26 subcarriers there are one child resource block.For different size of child resource block, pilot signal
Number is determining, it may for example comprise includes 2 pilot signals in the child resource block of 26 subcarriers；Including 52 subcarriers
It include 4 pilot signals in child resource block.And the position of pilot signal is not fixed in each child resource block, access point generation includes
The message frame of pilot information, the pilot information are used to indicate the position of pilot signal in each child resource block.
In embodiments of the present invention, as shown in table 1, under different channels bandwidth, for the subcarrier for including in child resource block
Number is different, and the number for the subcarrier for including in each child resource block determines of pilot signal (pilot) in the child resource block
Number, but the position of pilot signal is not fixed in each child resource block, for example, channel width is 20MHz, as shown in table 1, child resource
The quantity type for the subcarrier for including in block can there are three types of, respectively tri- kinds of n*26, m*52+26 and L*106+26.For every
A sub- resource block includes the case where 26 subcarriers, i.e. n*26, may include 2 pilot signals in each child resource block, the two
Which position is pilot signal be not fixed in 26 subcarriers, then for the position of two pilot signals in the child resource block
Can haveKind combination, wherein C is number of combinations,It can be expressed as shown in formula (1).Specifically, for every kind
The combination of channel width, number of subcarriers type, the quantity of pilot signal and position can be as shown in table 1.
Optionally, as one embodiment, for example, under the channel width of 20MHz, if each child resource block in resource block
In include 26 subcarriers, i.e., in the case that resource block is divided into n*26 subcarrier, the row of the position pilot signal (Pilot)
Number of columns is up toIt is contemplated that actual operation, the position of possible Pilot is only several, such as the position of Pilot
Only 4 kinds, position can be (- 12,12), (- 9 ,+9), (- 7,7) and (- 4,4), but the present invention is not limited thereto.
Optionally, as one embodiment, for example, under the channel width of 20MHz, if in child resource block in resource block
Including 52 subcarriers, in the case that the subcarrier of resource block is divided into m*52+26, for the child resource of 52 subcarriers
The number of the arrangement of block, the position Pilot is up toIt is contemplated that actual operation, the position of possible Pilot is only several,
Such as the position of Pilot is only 4 kinds, position can for (- 25, -22,22,25), (- 23, -17 ,+17,23), (- 19, -11,
11,19) and (- 21, -9,9,21).
Optionally, as one embodiment, for example, for including the case where 106 subcarriers, such as son in child resource block
In the case that carrier wave is divided into l*106+26, the number of the arrangement of the position Pilot is up toIt is contemplated that actual behaviour
Make, the position of possible Pilot is only several, such as the position of Pilot is only 4 kinds, position can be (- 100, -50,50,
100), (- 90, -40 ,+40,90), (- 70, -30,30,70) and (- 80, -20,20,80).
Optionally, as one embodiment, for example, for including the case where 242 subcarriers, such as son in child resource block
In the case that carrier wave is divided into w*242, the number of the arrangement of the position Pilot is up toIt is contemplated that actual operation, it can
Can Pilot position it is only several, such as the position of Pilot is only 4 kinds, position can for (- 230, -210, -190, -
120,120,190,210,230), (- 220, -200, -180, -160,160,180,200,220), (- 240, -210, -180, -
150,150,180,210,240) and (- 215, -195, -165, -105,105,165,295,215)；
Optionally, as one embodiment, for example, for including the case where 484 subcarriers, such as son in child resource block
In the case that carrier wave is divided into r*484, the number of the arrangement of the position Pilot is up toIt is contemplated that actual operation, it can
Can Pilot position it is only several, such as the position of Pilot is only 4 kinds, one of position can for (- 420, -400, -
380, -360, -340, -320, -300, -280,280,300,320,340,360,380,400,420).
Optionally, as one embodiment, for example, for including the case where 996 subcarriers, such as son in child resource block
In the case that carrier wave is divided into t*996, the number of the arrangement of the position Pilot is up toIt is contemplated that actual operation, it can
Can Pilot position it is only several, such as the position of Pilot is only 4 kinds, one of position can for (- 420, -400, -
380, -360, -340, -320, -300, -280,280,300,320,340,360,380,400,420).
In embodiments of the present invention, determining pilot information can be passed through one or more words by generation module 310
Section indicates.Specifically, for example, can use a byte, i.e. 8 bits indicate the pilot information, wherein three bits
It is used to indicate the quantity of child resource block sub-carriers, the position that five bits are used to indicate the pilot signal in the child resource block is sat
Mark, the present invention is not limited thereto.
Specifically, child resource block sub-carriers quantity information can be indicated with three bits, " 000 " indicates current child resource
It include 26 subcarriers in block, similarly " 001 " indicates 52, and " 010 " indicates 106, and " 011 " indicates 242, " 100 " table
Show 484, " 101 " indicate 996；The number of child resource block sub-carriers can also be indicated with more bit numbers, the present invention
It is not limited to this.
Optionally, in embodiments of the present invention, it can indicate that pilot signal is specific in child resource block by five bits
Position coordinates, can be with for the difference for the subcarrier number for including in child resource block for example, for five bits " 00001 "
It is used to indicate different coordinate positions: in the case where 26 subcarriers, can be with the position of " 00001 " expression Pilot (-
12,12)；In the case where 52 subcarriers, it can indicate that the position of Pilot is (- 25, -22,22,25) with " 00001 "；?
In the case where 106 subcarriers, it can indicate that the position of Pilot is (- 100, -50,50,100) with " 00001 "；In 242 sons
In the case where carrier wave, can be with the position of " 00001 " expression Pilot (- 220, -200, -180, -160,160,180,200,
220)；In the case where 484 subcarriers, can be with the position of " 00001 " expression Pilot (- 420, -400, -380, -
360, -340, -320, -300, -280,280,300,320,340,360,380,400,420)；996 subcarriers the case where
Under, can be with the position of " 00001 " expression Pilot (- 420, -400, -380, -360, -340, -320, -300, -280,
280,300,320,340,360,380,400,420), the present invention is not limited thereto.
In embodiments of the present invention, the message frame that access point generates generation module 310 is sent by sending module 320
To website (STA).Specifically, include pilot information in the message frame, can be somebody's turn to do by being carried in the physical header in the message
Pilot signal, for example, the signal domain in the physical header carries the pilot information, access point can be by the pilot tone of the message frame
Signal message is encapsulated in signal domain B SIG-B subdomain, and carries out word to the access website of each distribution by the way of sequence
The distribution of section.
It should be understood that wireless LAN communication equipment 300 according to an embodiment of the present invention can correspond to execute implementation of the present invention
Method 100 in example, and above and other operation and/or function of the modules in wireless LAN communication equipment 300
Respectively in order to realize the corresponding process of each method in Fig. 1, for sake of simplicity, details are not described herein.
Therefore, the wireless LAN communication equipment of the embodiment of the present invention, is generated by generation module and sending module is sent out
Message frame is sent, which includes pilot information, which is used to indicate each child resource block in resource block
The position of middle pilot signal, so as to avoid for different user using same position carrying pilot signal when caused by cannot
The problem of correct estimation valid data, using the insertion method of dynamic pilot frequency locations, channel estimation ability can be enhanced, improves
The handling capacity of system.
Fig. 4 shows the schematic block diagram of wireless LAN communication equipment 400 according to another embodiment of the present invention, optional
Ground, the equipment 400 can be website.As shown in figure 4, the equipment 400 includes:
First receiving module 410, for receiving message frame, which includes pilot information, pilot signal letter
Breath is used to indicate in resource block the position of pilot signal in each child resource block in multiple child resource blocks；
Second receiving module 420, for receiving every height according to the received message frame of first receiving module 410
The pilot signal in resource block.
Therefore, the wireless LAN communication equipment of the embodiment of the present invention, it includes pilot information that receiving module, which receives,
Message frame, which is used to indicate the position of pilot signal in each child resource block in resource block, according to the pilot tone
Signal message determines the position of pilot signal in child resource block, so as to avoid carrying different user using same position
It the problem of valid data cannot be correctly estimated caused by when pilot signal, can using the insertion method of dynamic pilot frequency locations
To enhance channel estimation ability, the handling capacity of system is improved.
In embodiments of the present invention, website can receive the message frame that access point is sent by the first receiving module 410, should
Message frame includes pilot information, which is used to indicate in resource block each child resource in multiple child resource blocks
The position of pilot signal in block.Optionally, the pilot information can be carried in the physical header in the message frame, specifically,
It can be by carrying the pilot information in the signal domain in the physical header, for example, the pilot information of the message frame can be with
It is encapsulated in signal domain B SIG-B subdomain, website determines the pilot information for belonging to the website in the SIG-B subdomain.
In embodiments of the present invention, the pilot signal in message frame that website is received according to the first receiving module 410 is believed
Breath determines the position of the pilot signal in child resource block, and receives the pilot signal by the second receiving module 420.For example, should
Pilot signal in message frame occupies eight bits, first three bit is " 000 ", and being used to indicate includes 26 sons in the child resource block
Carrier wave, rear five bits are " 00001 ", and the position for being used to indicate pilot signal in the child resource block is (- 12,12).In another example
First three bit is " 010 ", and being used to indicate includes 106 bits in the child resource block, and rear five bits are " 00001 ", is used for
The position for indicating pilot signal in the child resource block is (- 100, -50,100,50), and the present invention is not limited thereto.Website is according to this
Pilot information can determine the number for the subcarrier for including in current child resource block, can also determine and lead in the subcarrier
The specific location of frequency signal, so as to receive the pilot signal in the child resource block by the second receiving module 420.
It should be understood that wireless LAN communication equipment 400 according to an embodiment of the present invention can correspond to execute implementation of the present invention
Method 200 in example, and above and other operation and/or function of the modules in wireless LAN communication equipment 400
Respectively in order to realize the corresponding process of each method in Fig. 2, for sake of simplicity, details are not described herein.
Therefore, the wireless LAN communication equipment of the embodiment of the present invention, it includes pilot information that receiving module, which receives,
Message frame, which is used to indicate the position of pilot signal in each child resource block in resource block, according to the pilot tone
Signal message determines the position of pilot signal in child resource block, so as to avoid carrying different user using same position
It the problem of valid data cannot be correctly estimated caused by when pilot signal, can using the insertion method of dynamic pilot frequency locations
To enhance channel estimation ability, the handling capacity of system is improved.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (16)
1. a kind of Wireless LAN communication method, which comprises
Generate message frame, the message frame include pilot information, the pilot information include first identifier field and
Second identifier field, the first identifier field are used to indicate in resource block each child resource block neutron in multiple child resource blocks and carry
The number of wave, the number of each child resource block sub-carriers are used to determine of pilot signal in each child resource block
Number, the position for the corresponding pilot signal of number that the second identifier field is used to indicate the pilot signal；
Send the message frame.
2. according to the method described in claim 1, wherein, when child resource block sub-carriers each in the multiple child resource block
When number is identical, the position of the pilot signal is not identical.
3. according to the method described in claim 1, wherein, when child resource block sub-carriers each in the multiple child resource block
When number is not identical, the position of the pilot signal is not identical.
4. according to the method in any one of claims 1 to 3, wherein described in being carried in physical header in the message frame
Pilot information.
5. according to the method in any one of claims 1 to 3, wherein taken in signal domain in physical header in the message frame
With the pilot information.
6. a kind of Wireless LAN communication method, which comprises
Receive message frame, the message frame include pilot information, the pilot information include first identifier field and
Second identifier field, the first identifier field are used to indicate in resource block each child resource block neutron in multiple child resource blocks and carry
The number of wave, the number of each child resource block sub-carriers are used to determine of pilot signal in each child resource block
Number, the position for the corresponding pilot signal of number that the second identifier field is used to indicate the pilot signal；
According to the message frame, the pilot signal in each child resource block is received.
7. according to the method described in claim 6, wherein, the pilot signal letter is carried in the message frame in physical header
Breath.
8. method according to claim 6 or 7, wherein led described in being carried in signal domain in physical header in the message frame
Frequency signal message.
9. the equipment in a kind of WLAN, the equipment include:
Generation module, for generating message frame, the message frame includes pilot information, and the pilot information includes the
One identification field and second identifier field, the first identifier field are used to indicate in resource block every height in multiple child resource blocks
The number of resource block sub-carriers, the number of each child resource block sub-carriers is for determining in each child resource block
The number of pilot signal, the position for the corresponding pilot signal of number that the second identifier field is used to indicate the pilot signal
It sets；
Sending module, the message frame generated for sending the generation module.
10. equipment according to claim 9, wherein when child resource block sub-carriers each in the multiple child resource block
Number it is identical when, the position of the pilot signal is not identical.
11. equipment according to claim 9, wherein when child resource block sub-carriers each in the multiple child resource block
Number it is not identical when, the position of the pilot signal is not identical.
12. the equipment according to any one of claim 9 to 11, wherein described in being carried in physical header in the message frame
Pilot information.
13. the equipment according to any one of claim 9 to 11, wherein in the message frame in physical header in signal domain
Carry the pilot information.
14. the equipment in a kind of WLAN, the equipment include:
First receiving module, for receiving message frame, the message frame includes pilot information, the pilot information packet
First identifier field and second identifier field are included, the first identifier field is used to indicate in resource block in multiple child resource blocks often
The number of a sub- resource block sub-carriers, the number of each child resource block sub-carriers is for determining each child resource
The number of pilot signal in block, the corresponding pilot signal of number that the second identifier field is used to indicate the pilot signal
Position；
Second receiving module, for receiving each child resource according to the received message frame of first receiving module
The pilot signal in block.
15. equipment according to claim 14, wherein carry the pilot signal letter in the message frame in physical header
Breath.
16. equipment according to claim 14 or 15, wherein described in being carried in signal domain in physical header in the message frame
Pilot information.
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| CN201510395435.5A CN105072061B (en) | 2015-07-03 | 2015-07-03 | Wireless LAN communication method and equipment |
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| CN102724758A (en) * | 2011-03-25 | 2012-10-10 | 北京新岸线无线技术有限公司 | Method and system for adjusting demodulation pilot frequency in wireless communication system |
| CN104735675A (en) * | 2013-12-19 | 2015-06-24 | 宇龙计算机通信科技(深圳)有限公司 | Wireless local area network communication method and wireless local area network communication device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1804391A1 (en) * | 2004-11-08 | 2007-07-04 | Matsushita Electric Industrial Co., Ltd. | Radio transmitter and pilot signal inserting method |
| CN100542159C (en) * | 2005-10-14 | 2009-09-16 | 华为技术有限公司 | The method of pilot frequency distribution and device in a kind of wireless communication system |
| KR101445335B1 (en) * | 2007-05-28 | 2014-09-29 | 삼성전자주식회사 | OFDM transmitting/receiving device for transmitting/receiving OFDM symbols with varing data transmission rate, and methods thereof |
| KR101498060B1 (en) * | 2008-02-19 | 2015-03-03 | 엘지전자 주식회사 | Method for uplink transmittion in an ofdm(a) system |
| CN102739593B (en) * | 2011-04-08 | 2014-12-31 | 华为技术有限公司 | Method and base station for sending resource blocks and performing combined channel estimation, and user equipment |
| CN103841071A (en) * | 2012-11-22 | 2014-06-04 | 普天信息技术研究院有限公司 | Method for channel extermination in wireless communication system |
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| CN102724758A (en) * | 2011-03-25 | 2012-10-10 | 北京新岸线无线技术有限公司 | Method and system for adjusting demodulation pilot frequency in wireless communication system |
| CN104735675A (en) * | 2013-12-19 | 2015-06-24 | 宇龙计算机通信科技(深圳)有限公司 | Wireless local area network communication method and wireless local area network communication device |
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Address after: 519085 Technology Innovation Coast Meizu science and technology building, Zhuhai High-tech Zone, Guangdong Patentee after: Zhuhai Meizu Technology Co., Ltd. Address before: 519085 Technology Innovation Coast Meizu science and technology building, Zhuhai High-tech Zone, Guangdong Patentee before: Meizu Technology (China) Co., Ltd. |