CN105722146B - 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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- CN105722146B CN105722146B CN201610177877.7A CN201610177877A CN105722146B CN 105722146 B CN105722146 B CN 105722146B CN 201610177877 A CN201610177877 A CN 201610177877A CN 105722146 B CN105722146 B CN 105722146B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
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 different from 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 make data frame extend domain used by code modulation mode it is different from code modulation mode used by data field, and then guarantee recipient can more accurately receive and decoded data frame in real data.
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, so that code modulation mode used by data frame extension domain is different from code modulation mode used by data field, in turn
Guarantee recipient can more accurately receive and decoded data frame in real data.
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 different from code modulation mode used by the data field to extend code modulation mode used by domain；Send the data
Frame.
It in the technical scheme, is data actually required since data frame extends the data in domain (i.e. the domain PE) not being,
The only part of some redundancies, therefore by extending data frame used by code modulation mode used by domain and data field
Code modulation mode is different, enable the recipient to more accurately to receive and decoded data frame in real data, it is ensured that number
Extend the application scenarios that domain can be suitable for 802.11ax according to frame.For example, data field uses 64-QAM (Quadrature
Amplitude Modulation, phase quadrature amplitude modulation) modulation system, and data frame extend domain use QPSK
The modulation system of (Quadrature Phase Shift Keyin, quadrature phase shift keying).
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 not 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, and due to data frame
Extending the data in domain is not data actually required, and data frame extends domain and also uses the coding different from data field
Modulation system, there is no need to be inserted into protection interval to prevent from interfering, and due to that can be parsed in the physical frame header of data frame
The length of PE out, therefore when having parsed data field, then data can be abandoned completely extends domain not parsing.
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 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 different from 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.
It in the technical scheme, is data actually required since data frame extends the data in domain (i.e. the domain PE) not being,
The only part of some redundancies, therefore by extending data frame used by code modulation mode used by domain and data field
Code modulation mode is different, enable the recipient to more accurately to receive and decoded data frame in real data, it is ensured that number
Extend the application scenarios that domain can be suitable for 802.11ax according to frame.For example, data field uses the modulation system of 64-QAM, and data
Frame extends the modulation system that domain uses QPSK.
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 not 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, and due to data frame extend domain in data be not be actually required
Data, and data frame extends domain and also uses the code modulation mode different from data field, and there is no need to be inserted into protection interval
To prevent from interfering.Simultaneously as the length of PE can be parsed in the physical frame header of data frame, therefore works as and parsed data field
When, data can be abandoned completely extends domain not parsing.
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 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, so that used by data frame extends code modulation mode used by domain and data field
Code modulation mode is different, so guarantee recipient can more accurately receive and decoded data frame in real data.
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 different；
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..
It in the technical scheme, is data actually required since data frame extends the data in domain (i.e. the domain PE) not being,
The only part of some redundancies, therefore by extending data frame used by code modulation mode used by domain and data field
Code modulation mode is different, enable the recipient to more accurately to receive and decoded data frame in real data, it is ensured that number
Extend the application scenarios that domain can be suitable for 802.11ax according to frame.For example, data field uses the modulation system of 64-QAM, and data
Frame extends the modulation system that domain uses QPSK.
Due to sender's (can be access point, be also possible to website) in the domain HE-SIG-A of the data frame transmitted
Identified the mode in the domain PE (i.e. the duration of PE subdomain), therefore after recipient has received real data, it can be according to duration
Mode has completely received the part PE.
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 not 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, and due to data frame extend domain in data be not be actually required
Data, and data frame extends domain and also uses the code modulation mode different from data field, and there is no need to be inserted into protection interval
To prevent from interfering.Simultaneously as the length of PE can be parsed in the physical frame header of data frame, therefore works as and parsed data field
When, data can be abandoned completely extends domain not parsing.
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 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 different from 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.
It in the technical scheme, is data actually required since data frame extends the data in domain (i.e. the domain PE) not being,
The only part of some redundancies, therefore by extending data frame used by code modulation mode used by domain and data field
Code modulation mode is different, enable the recipient to more accurately to receive and decoded data frame in real data, it is ensured that number
Extend the application scenarios that domain can be suitable for 802.11ax according to frame.For example, data field uses the modulation system of 64-QAM, and data
Frame extends the modulation system that domain uses QPSK.
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 not 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, and due to data frame extend domain in data be not be actually required
Data, and data frame extends domain and also uses the code modulation mode different from data field, and there is no need to be inserted into protection interval
To prevent from interfering.Simultaneously as the length of PE can be parsed in the physical frame header of data frame, therefore works as and parsed data field
When, data can be abandoned completely extends domain not parsing.
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 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 to consider that the domain PE is a part of entire data packet duration, because
This difference in order to significantly distinguish itself and the domain data (i.e. data field), modulation should use different with the domain data with coding mode
Mode, it is specific as shown in Figure 6 and Figure 7:
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
According to the difference of 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 different.
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 so that data frame extends code modulation mode used by code modulation mode and data field used by domain not
Together, so guarantee recipient can more accurately receive and decoded data frame in real data.
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 (8)
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 different from code modulation mode used by the data field that data frame extends code modulation mode used by domain；
Send the data frame；
Wherein, when extending domain progress coded modulation to the data frame, between the data frame extends and is not inserted into protection in domain
Every.
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 not inserted into pilot signal.
3. 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.
4. 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 different；
Transmission unit, for sending the data frame；
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 not inserted into protection interval.
5. the communication device of WLAN according to claim 4, 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 not inserted into pilot signal.
6. the communication device of WLAN according to claim 4 or 5, which is characterized in that the data frame includes: list
User data frame and multi-user data frame.
7. a kind of access point characterized by comprising the communication of the WLAN as described in any one of claim 4 to 6
Device.
8. a kind of website characterized by comprising the communication of the WLAN as described in any one of claim 4 to 6 fills
It sets.
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| CN112532342B (en) * | 2019-09-17 | 2023-05-16 | 华为技术有限公司 | Data transmission method and device in back reflection communication |
| CN116965070A (en) * | 2021-05-21 | 2023-10-27 | 华为技术有限公司 | Short-range wireless communication method and related equipment |
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| CN105376859A (en) * | 2014-08-14 | 2016-03-02 | 华为技术有限公司 | Information transmission method and information transmission device |
| CN105379217A (en) * | 2013-11-19 | 2016-03-02 | 英特尔Ip公司 | Access point and methods for distinguishing HEW physical layer packets with backwards compatibility |
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| JP6464493B2 (en) * | 2013-10-25 | 2019-02-06 | マーベル ワールド トレード リミテッド | Distance extension mode for WiFi |
| CN106664281B (en) * | 2014-06-11 | 2020-07-10 | 马维尔国际有限公司 | Method and apparatus for padding OFDM symbols in wireless communication system |
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| CN105379217A (en) * | 2013-11-19 | 2016-03-02 | 英特尔Ip公司 | Access point and methods for distinguishing HEW physical layer packets with backwards compatibility |
| CN105376859A (en) * | 2014-08-14 | 2016-03-02 | 华为技术有限公司 | Information transmission method and information transmission device |
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| HE PHY Padding and Packet Extension;hongyuan zhang 等;《IEEE 802.11》;20150912;全文 |
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