CN105871507B - Communication means and communication device, the access point and website of WLAN - Google Patents
Communication means and communication device, the access point and website of WLAN Download PDFInfo
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- CN105871507B CN105871507B CN201610177872.4A CN201610177872A CN105871507B CN 105871507 B CN105871507 B CN 105871507B CN 201610177872 A CN201610177872 A CN 201610177872A CN 105871507 B CN105871507 B CN 105871507B
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- data frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0014—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the source coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
Abstract
The present invention provides a kind of communication means of WLAN and communication devices, access point and website, wherein, the communication means of WLAN, it include: generation data frame, the data frame packet extends domain containing data field and the data frame adjacent with the data field, wherein, it is identical as code modulation mode used by the data field to extend code modulation mode used by domain for the data frame；Send the data frame.Technical solution of the present invention adopts receiver in a like fashion to receive data frame extension domain and data field, the requirement to receiver is reduced, data frame extension domain is avoided using the code modulation mode different from data field and increases the Capability Requirement to receiver.
Description
Technical field
The present invention relates to fields of communication technology, wireless in particular to a kind of communication means of WLAN, one kind
The communication device of local area network, a kind of access point and a kind of website.
Background technique
Study group HEW (the High efficiency of next-generation Wi-Fi technology has been set up in May, 2013,802.11
WLAN, efficient WLAN), i.e. 802.11ax, main research point is the handling capacity for improving existing Wi-Fi technology, improves
The effective use efficiency of frequency spectrum improves user experience and service quality Q oE (Quality of Experience), and realizes
Than the communication environment that existing Wi-Fi technology adapts to more crypto set.
During standard formulation, the format of data frame is defined as shown in Figure 1, wherein there is Data field
(i.e. data field) and Packet Extension subdomain (i.e. data frame extends domain, the referred to as domain PE), and to Packet
Extension is also made that regulation, is divided into 8us and 16us both of which, and the transimission power in the domain PE is identical as Data field.
Although specific regulation is all made that the transimission power and mode in the domain PE in standard, for the volume of PE subdomain
Code and modulation system do not make specific regulation but.
Summary of the invention
The present invention is based at least one above-mentioned technical problem, proposes a kind of communication party of new WLAN
Case adopts receiver and extends domain and data field in a like fashion to receive data frame, reduces and want to receiver
It asks, avoids data frame extension domain using the code modulation mode different from data field and increase the Capability Requirement to receiver.
In view of this, according to the first aspect of the invention, proposing a kind of communication means of WLAN, comprising: raw
At data frame, the data frame packet extends domain containing data field and the data frame adjacent with the data field, wherein the data frame
It is identical as code modulation mode used by the data field to extend code modulation mode used by domain；Send the data
Frame.
In the technical scheme, by making data frame extend code modulation mode and data field used by domain (i.e. the domain PE)
Used code modulation mode is identical, and receiver is adopted and extends domain and data in a like fashion to receive data frame
Domain reduces the requirement to receiver, avoids data frame extension domain and is increased using the code modulation mode different from data field
Add the Capability Requirement to receiver.For example, data field uses 64-QAM (Quadrature Amplitude Modulation, phase
Quadrature amplitude modulation) modulation system when, data frame extends domain and also uses the modulation system of 64-QAM.
In the above-mentioned technical solutions, it is preferable that further include: when extending domain progress coded modulation to the data frame,
The data frame, which extends in domain, is inserted into protection interval.
In the technical scheme, protection interval is Guard Interval (referred to as GI), is to guarantee receiving side
The time for reducing intersymbol interference that each data block of sender's transmission can correctly be parsed and be arranged, since data frame prolongs
Domain is stretched using code modulation mode identical with data field, therefore intersymbol is caused to data field in data frame extension domain in order to prevent
Interference, need data frame extend domain in be inserted into protection interval.
In any of the above-described technical solution, it is preferable that further include: coded modulation is carried out extending domain to the data frame
When, extend in domain in the data frame and is not inserted into pilot signal.
It in the technical scheme, is data actually required since data frame extends the data in domain not being, there is no need to
It is decoded, so estimating without being inserted into pilot signal in data frame extension domain before data frame is sent to carry out channel
Meter.
In any of the above-described technical solution, it is preferable that further include: data envelope is carried out to the data field using intertexture mode
Dress, and domain is extended to the data frame using quick mode and carries out data encapsulation.
In the technical scheme, since intertexture mode (Interleave) can effectively prevent interfering, for data
Domain needs to guarantee data transmission quality using intertexture mode；It and is practical need since data frame extends the data in domain not being
The data wanted, there is no need to prevent from interfering using intertexture mode, it is only necessary to carry out data encapsulation by quick mode.
In any of the above-described technical solution, it is preferable that the data frame includes: single user data frame and multi-user data
Frame.Wherein, single user data frame refers to that access point (Access Point, AP) is sent to the unicast of website (Station, STA)
Data frame, or refer to that website is sent to the unicast data frames of access point；Multi-user data frame refers to access point simultaneously to multiple
The unicast data frames that the unicast data frames or multiple websites that website is sent are sent to access point simultaneously.
According to the second aspect of the invention, it is also proposed that a kind of communication device of WLAN, comprising: generation unit,
For generating data frame, the data frame packet extends domain containing data field and the data frame adjacent with the data field, wherein described
It is identical as code modulation mode used by the data field that data frame extends code modulation mode used by domain；It sends single
Member, for sending the data frame.
In the technical scheme, by extending data frame used by code modulation mode used by domain and data field
Code modulation mode is identical, and receiver is adopted and extends domain and data field in a like fashion to receive data frame, is reduced
Requirement to receiver, is avoided data frame and extends domain and increased using the code modulation mode different from data field to reception
The Capability Requirement of machine.For example, when data field uses the modulation system of 64-QAM, data frame extends the modulation that domain also uses 64-QAM
Mode.
In the above-mentioned technical solutions, it is preferable that the generation unit is also used to: being compiled extending domain to the data frame
When code modulation, extends in domain in the data frame and be inserted into protection interval.
In the technical scheme, protection interval is to guarantee that receiving side can correctly parse each of sender's transmission
Data block and be arranged reduction intersymbol interference time, due to data frame extend domain use coded modulation identical with data field
Mode, therefore intersymbol interference is caused to data field in data frame extension domain in order to prevent, needs to extend in domain in data frame and insert
Enter protection interval.
In any of the above-described technical solution, it is preferable that the generation unit is also used to: to the data frame extend domain into
When row coded modulation, extends in domain in the data frame and be not inserted into pilot signal.
It in the technical scheme, is data actually required since data frame extends the data in domain not being, there is no need to
It is decoded, so estimating without being inserted into pilot signal in data frame extension domain before data frame is sent to carry out channel
Meter.
In any of the above-described technical solution, it is preferable that the generation unit is also used to: using intertexture mode to the data
Domain carries out data encapsulation, and extends domain to the data frame using quick mode and carry out data encapsulation.
In the technical scheme, it since intertexture mode can effectively prevent interfering, for data field, needs using friendship
Mode is knitted to guarantee data transmission quality；And be data actually required since data frame extends the data in domain not being,
It prevents from interfering without intertexture mode, it is only necessary to pass through quick mode and carry out data encapsulation.
In any of the above-described technical solution, it is preferable that the data frame includes: single user data frame and multi-user data
Frame.Wherein, single user data frame refers to that access point is sent to the unicast data frames of website, or refers to that website is sent to access point
Unicast data frames；Multi-user data frame refers to the unicast data frames or multiple websites that access point is sent to multiple websites simultaneously
The unicast data frames sent simultaneously to access point.
According to the third aspect of the invention we, it is also proposed that a kind of access point, comprising: such as institute in any of the above-described technical solution
The communication device for the WLAN stated.
According to the fourth aspect of the invention, it is also proposed that a kind of website, comprising: as described in any of the above-described technical solution
WLAN communication device.
By above technical scheme, receiver is adopted and extends domain and data in a like fashion to receive data frame
Domain reduces the requirement to receiver, avoids data frame extension domain and is increased using the code modulation mode different from data field
Add the Capability Requirement to receiver.
Detailed description of the invention
Fig. 1 shows the form schematic diagram of the data frame of standard formulation；
Fig. 2 shows the schematic flow diagrams of the communication means of WLAN according to first embodiment of the invention；
Fig. 3 shows the schematic block diagram of the communication device of the WLAN of embodiment according to the present invention；
Fig. 4 shows the schematic block diagram of the access point of embodiment according to the present invention；
Fig. 5 shows the schematic block diagram of the website of embodiment according to the present invention；
Fig. 6 shows the schematic flow diagram of the communication means of the WLAN of second embodiment according to the present invention；
Fig. 7 shows the schematic flow diagram of the communication means of the WLAN of third embodiment according to the present invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 2 shows the schematic flow diagrams of the communication means of WLAN according to first embodiment of the invention.
As shown in Fig. 2, the communication means of WLAN according to first embodiment of the invention, comprising:
Step 202, data frame is generated, the data frame packet extends containing data field and the data frame adjacent with the data field
Domain, wherein the data frame extends code modulation mode used by code modulation mode used by domain and the data field
It is identical；
Step 204, the data frame is sent.
Wherein, the executing subject of communication means shown in Fig. 2 can be the router as access point, be also possible to conduct
Mobile phone or PDA (Personal Digital Assistant, palm PC) of website etc..
In the technical scheme, by extending data frame used by code modulation mode used by domain and data field
Code modulation mode is identical, and receiver is adopted and extends domain and data field in a like fashion to receive data frame, is reduced
Requirement to receiver, is avoided data frame and extends domain and increased using the code modulation mode different from data field to reception
The Capability Requirement of machine.For example, when data field uses the modulation system of 64-QAM, data frame extends the modulation that domain also uses 64-QAM
Mode.
In the above-mentioned technical solutions, it is preferable that further include: when extending domain progress coded modulation to the data frame,
The data frame, which extends in domain, is inserted into protection interval.
In the technical scheme, protection interval is to guarantee that receiving side can correctly parse each of sender's transmission
Data block and be arranged reduction intersymbol interference time, due to data frame extend domain use coded modulation identical with data field
Mode, therefore intersymbol interference is caused to data field in data frame extension domain in order to prevent, needs to extend in domain in data frame and insert
Enter protection interval.
In any of the above-described technical solution, it is preferable that further include: coded modulation is carried out extending domain to the data frame
When, extend in domain in the data frame and is not inserted into pilot signal.
It in the technical scheme, is data actually required since data frame extends the data in domain not being, there is no need to
It is decoded, so estimating without being inserted into pilot signal in data frame extension domain before data frame is sent to carry out channel
Meter.
In any of the above-described technical solution, it is preferable that further include: data envelope is carried out to the data field using intertexture mode
Dress, and domain is extended to the data frame using quick mode and carries out data encapsulation.
In the technical scheme, it since intertexture mode can effectively prevent interfering, for data field, needs using friendship
Mode is knitted to guarantee data transmission quality；And be data actually required since data frame extends the data in domain not being,
It prevents from interfering without intertexture mode, it is only necessary to pass through quick mode and carry out data encapsulation.
In any of the above-described technical solution, it is preferable that the data frame includes: single user data frame and multi-user data
Frame.For example, data frame can be SU (Single User, single user) PPDU (Physical Layer Convergence
Procedure (PLCP) Protocol Data Unit, physical layer convergence procedure protocol Data Unit), it is also possible to MU
(Multi-User, multi-user) PPDU.
Fig. 3 shows the schematic block diagram of the communication device of the WLAN of embodiment according to the present invention.
As shown in figure 3, the communication device 300 of the WLAN of embodiment according to the present invention, comprising: generation unit
302, for generating data frame, the data frame packet extends domain containing data field and the data frame adjacent with the data field, wherein
It is identical as code modulation mode used by the data field that the data frame extends code modulation mode used by domain；It sends
Unit 304, for sending the data frame.
Wherein, generation unit 302 can be signal processor, central processing unit or baseband processor etc. when realizing；Hair
Unit 304 is sent to can be transmitter (Transmitter) or antenna.
In the technical scheme, by extending data frame used by code modulation mode used by domain and data field
Code modulation mode is identical, and receiver is adopted and extends domain and data field in a like fashion to receive data frame, is reduced
Requirement to receiver, is avoided data frame and extends domain and increased using the code modulation mode different from data field to reception
The Capability Requirement of machine.For example, when data field uses the modulation system of 64-QAM, data frame extends the modulation that domain also uses 64-QAM
Mode.
In the above-mentioned technical solutions, it is preferable that the generation unit 302 is also used to: to the data frame extend domain into
When row coded modulation, extends in domain in the data frame and be inserted into protection interval.
In the technical scheme, protection interval is to guarantee that receiving side can correctly parse each of sender's transmission
Data block and be arranged reduction intersymbol interference time, due to data frame extend domain use coded modulation identical with data field
Mode, therefore intersymbol interference is caused to data field in data frame extension domain in order to prevent, needs to extend in domain in data frame and insert
Enter protection interval.
In any of the above-described technical solution, it is preferable that the generation unit 302 is also used to: extending to the data frame
When domain carries out coded modulation, extends in domain in the data frame and be not inserted into pilot signal.
It in the technical scheme, is data actually required since data frame extends the data in domain not being, there is no need to
It is decoded, so estimating without being inserted into pilot signal in data frame extension domain before data frame is sent to carry out channel
Meter.
In any of the above-described technical solution, it is preferable that the generation unit 302 is also used to: using intertexture mode to described
Data field carries out data encapsulation, and extends domain to the data frame using quick mode and carry out data encapsulation.
In the technical scheme, it since intertexture mode can effectively prevent interfering, for data field, needs using friendship
Mode is knitted to guarantee data transmission quality；And be data actually required since data frame extends the data in domain not being,
It prevents from interfering without intertexture mode, it is only necessary to pass through quick mode and carry out data encapsulation.
In any of the above-described technical solution, it is preferable that the data frame includes: single user data frame and multi-user data
Frame.
Fig. 4 shows the schematic block diagram of the access point of embodiment according to the present invention.
As shown in figure 4, the access point 400 of embodiment according to the present invention, comprising: WLAN as shown in Figure 3
Communication device 300.
Fig. 5 shows the schematic block diagram of the website of embodiment according to the present invention.
As shown in figure 5, the website 500 of embodiment according to the present invention, comprising: WLAN as shown in Figure 3
Communication device 300.
In conclusion technical solution of the present invention is mainly that the domain PE in data frame uses and the domain data (i.e. data field) phase
Same modulation coding scheme, to reduce the Capability Requirement to receiver.And due to the mode of PE (duration of transmission) be it is determining, because
This receiver receives and need to only delete this part after PE and can be decoded and channel estimation.Detailed process such as Fig. 6 and Fig. 7 institute
Show:
As shown in fig. 6, the communication means of the WLAN of second embodiment according to the present invention, comprising:
Step 601, access point 1 generates data frame, wherein code modulation mode and number used by the domain PE in data frame
It is identical according to code modulation mode used by domain.
Step 602, access point 1 sends data frame.
Step 603, website 2 receives data frame.
Step 604, website 2 is decoded the data field in data frame.And since the data in the domain PE are not practical
The data needed, there is no need to be decoded to it.
In this embodiment, data frame can be DL (Downlink, downlink) SU PPDU, be also possible to DL MU PPDU.
As shown in fig. 7, the communication means of the WLAN of third embodiment according to the present invention, comprising:
Step 701, website 2 generates data frame, wherein code modulation mode and data used by the domain PE in data frame
Code modulation mode used by domain is identical.
Step 702, website 2 sends data frame.
Step 703, access point 1 receives data frame.
Step 704, access point 1 is decoded the data field in data frame.And since the data in the domain PE are not real
The data that border needs, there is no need to be decoded to it.
In this embodiment, data frame can be UL (Uplink, uplink) SU PPDU, be also possible to UL MU PPDU.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, and the invention proposes a kind of new WLANs
Communication plan, receiver is adopted and extends domain and data field in a like fashion to receive data frame, reduces docking
The requirement of receipts machine avoids data frame extension domain using the code modulation mode different from data field and increases the energy to receiver
Force request.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of communication means of WLAN characterized by comprising
Data frame is generated, the data frame packet extends domain containing data field and the data frame adjacent with the data field, wherein described
It is identical as code modulation mode used by the data field that data frame extends code modulation mode used by domain；
Send the data frame；
When extending domain progress coded modulation to the data frame, extends in domain in the data frame and be not inserted into pilot signal.
2. the communication means of WLAN according to claim 1, which is characterized in that further include:
When extending domain progress coded modulation to the data frame, extends in domain in the data frame and be inserted into protection interval.
3. the communication means of WLAN according to claim 1 or 2, which is characterized in that further include:
Data encapsulation is carried out to the data field using intertexture mode, and domain is extended to the data frame using quick mode and is carried out
Data encapsulation.
4. the communication means of WLAN according to claim 1 or 2, which is characterized in that the data frame includes: list
User data frame and multi-user data frame.
5. a kind of communication device of WLAN characterized by comprising
Generation unit, for generating data frame, the data frame packet prolongs containing data field and the data frame adjacent with the data field
Stretch domain, wherein the data frame extends coded modulation side used by code modulation mode used by domain and the data field
Formula is identical；
Transmission unit, for sending the data frame；
The generation unit is also used to: when extending domain progress coded modulation to the data frame, extending domain in the data frame
In be not inserted into pilot signal.
6. the communication device of WLAN according to claim 5, which is characterized in that the generation unit is also used to:
When extending domain progress coded modulation to the data frame, extends in domain in the data frame and be inserted into protection interval.
7. the communication device of WLAN according to claim 5 or 6, which is characterized in that the generation unit is also used
In:
Data encapsulation is carried out to the data field using intertexture mode, and domain is extended to the data frame using quick mode and is carried out
Data encapsulation.
8. the communication device of WLAN according to claim 5 or 6, which is characterized in that the data frame includes: list
User data frame and multi-user data frame.
9. a kind of access point characterized by comprising the communication of the WLAN as described in any one of claim 5 to 8
Device.
10. a kind of website characterized by comprising the communication of the WLAN as described in any one of claim 5 to 8
Device.
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Citations (2)
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|---|---|---|---|---|
| CN102088342A (en) * | 2009-12-04 | 2011-06-08 | 重庆无线绿洲通信技术有限公司 | Feedback device and method for MIMO (multiple input multiple output) system |
| CN105164961A (en) * | 2013-04-05 | 2015-12-16 | 松下电器（美国）知识产权公司 | Modulation and coding scheme table adaptation for 256-QAM |
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| KR20160022790A (en) * | 2014-08-20 | 2016-03-02 | 뉴라컴 인코포레이티드 | Physical layer protocol data unit format includiing padding in a high efficiency wireless lan |
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| CN102088342A (en) * | 2009-12-04 | 2011-06-08 | 重庆无线绿洲通信技术有限公司 | Feedback device and method for MIMO (multiple input multiple output) system |
| CN105164961A (en) * | 2013-04-05 | 2015-12-16 | 松下电器（美国）知识产权公司 | Modulation and coding scheme table adaptation for 256-QAM |
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