CN106100791B - Communication means, communication device, access point and the website of WLAN - Google Patents
Communication means, communication device, access point and the website of WLAN Download PDFInfo
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- CN106100791B CN106100791B CN201610431886.4A CN201610431886A CN106100791B CN 106100791 B CN106100791 B CN 106100791B CN 201610431886 A CN201610431886 A CN 201610431886A CN 106100791 B CN106100791 B CN 106100791B
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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
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/03—Protocol definition or specification
Abstract
The present invention provides a kind of communication means of WLAN, communication device, access point and website, wherein, the communication means of WLAN, it include: to generate PPDU, it include SIG-A subdomain in the PPDU, it include TXOP field in the SIG-A subdomain, wherein, when the PPDU is non-data frame, the value of the TXOP field is the length of the SIG-A subdomain in the PPDU and the sum of the length of all subdomains after SIG-A subdomain, when the PPDU is data frame, the value of the TXOP field is the length of the SIG-A subdomain in the PPDU, the sum of the length of the length of all subdomains after SIG-A subdomain and the confirmation message frame for the data frame；Send the PPDU.Technical solution of the present invention can be directed to different types of frame, propose the length for calculating the TXOP field in PPDU, and it is interference-free in transmission process to be effectively ensured PPDU, meet the communicating requirement of 802.11ax.
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
Next-generation Wi-Fi (Wireless Fidelity, Wireless Fidelity) technology has been set up in May, 2013,802.11
Study group HEW (High Efficiency WLAN, efficient WLAN), i.e. 802.11ax, main research point are to improve
The handling capacity of existing Wi-Fi technology, the effective use efficiency for improving frequency spectrum improve user experience and service quality Q oE
(Quality of Experience), and realize the communication environment that more crypto set is adapted to than existing Wi-Fi technology.
Three kinds of PPDU (Physical Layer Convergence Procedure is defined in 802.11ax standard
(PLCP) Protocol Data Unit, physical layer convergence procedure protocol Data Unit) format, be HE (High respectively
Efficiency, high efficiency) SU (Single User, single user) PPDU, HE MU (Multi-User, multi-user) PPDU and HE
Trigger-based PPDU (PPDU based on trigger frame, wherein trigger frame is a kind of communication resource distribution message frame), and this
Three kinds of PPDU include SIG-A subdomain, and TXOP (Transmission Opportunity, transmission are defined in SIG-A subdomain
Chance) field, the field is for protecting PPDU interference-free in transmission.But it is not right in current 802.11ax standard
The length of TXOP field in SIG-A subdomain is defined, and is also not prescribed by and how to be calculated the length of TXOP field, therefore such as
What can reasonably calculate the length of TXOP field, be asked with meeting the communicating requirement of 802.11ax as technology urgently to be resolved
Topic.
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 can be directed to different types of frame, propose the length for calculating the TXOP field in PPDU, PPDU has been effectively ensured and has been transmitted across
It is interference-free in journey, meet the communicating requirement of 802.11ax.
In view of this, according to the first aspect of the invention, proposing a kind of communication means of WLAN, comprising: raw
Include SIG-A subdomain in the PPDU at PPDU, includes TXOP field in the SIG-A subdomain, wherein in the PPDU
When for non-data frame, the value of the TXOP field is the length of the SIG-A subdomain in the PPDU and is located at after SIG-A subdomain
All subdomains the sum of length, when the PPDU is data frame, the value of the TXOP field is the SIG-A in the PPDU
The length of the length of subdomain, the length of all subdomains after SIG-A subdomain and the confirmation message frame for the data frame
The sum of degree；Send the PPDU.
In the technical scheme, since not need receiving end feeding back confirmation message frame correct to indicate whether for non-data frame
It receives, therefore when PPDU is non-data frame, the value of TXOP field does not have to the length plus confirmation message frame, it is only necessary to be set as
The sum of the length of the length of SIG-A subdomain in PPDU and all subdomains after SIG-A subdomain；And for data
Frame indicates whether data frame is correctly received due to needing receiving end feeding back confirmation message frame, is data frame in PPDU
When, the value of TXOP field will add the length of confirmation message frame, that is, the length for the SIG-A subdomain for needing to be set as in PPDU, position
The length of all subdomains after SIG-A subdomain and the sum of the length of confirmation message frame.As it can be seen that technical solution of the present invention needle
To different types of frame, the length for how calculating the field of the TXOP in PPDU is proposed, PPDU has been effectively ensured and has been transmitted across
It is interference-free in journey, meet the communicating requirement of 802.11ax.
Wherein, non-data frame can be control frame (such as ACK frame, RTS frame, CTS frame), management frame (such as beacon frame, detection
Claim frame, probing response frame etc.) etc..The length refers specifically to occupied time span.
In the above-mentioned technical solutions, it is preferable that when the PPDU is non-data frame, if the PPDU is single user
PPDU, the then value of the TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain with
The sum of the length of MAC (Media Access Control, media access control) data frame；If the PPDU is multi-user
PPDU, the then value of the TXOP field are as follows: length, the length of SIG-B subdomain × M, HE-LTF subdomain length of SIG-A subdomain
The sum of degree, the length of HE-STF subdomain and length of MAC data frame, wherein M is the SIG-B subdomain in the multi-user PPDU
Number.
Wherein, HE-LTF subdomain is High Efficiency Long Training Field (efficient long training
Field)；HE-STF subdomain is High Efficiency Short Training Field (efficient short training field).
In other words, the value of TXOP field eliminates L-STF subdomain (the Legacy Short Training in PPDU
Field, traditional short training field), L-LTF subdomain (Legacy Long Training Field, traditional long training word
Section) and L-SIG subdomain (Legacy Signal Field, traditional signal field) length.
In any of the above-described technical solution, it is preferable that when the PPDU is data frame, if the PPDU is single user
PPDU, the then value of the TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain,
Length, the length and ACK of SIFS (Short Inter-frame Space, short interFrameGap) of MAC data frame
(Acknowledge) the sum of the length of frame；Or the value of the TXOP field are as follows: length, the length of HE-LTF subdomain of SIG-A subdomain
Degree, the length of HE-STF subdomain, the length of MAC data frame, the length and block confirmation message frame (Block of N times of SIFS
Acknowledge, i.e. BA) the sum of length, wherein N is the number of the MAC data frame.
In the technical scheme, if confirmation message frame is the feedback carried out for single MAC data frame, i.e. confirmation message frame
For ACK, then the value of TXOP field only adds a SIFS length；If confirmation message frame be for multiple MAC data frames into
Capable feedback, i.e. confirmation message frame are BA, then the value of TXOP field need to be plus N (number that N is MAC data frame) a SIFS long
Degree.
In any of the above-described technical solution, it is preferable that when the PPDU is data frame, if the PPDU is multi-user
PPDU, the then value of the TXOP field are as follows: length, the length of SIG-B subdomain × M, HE-LTF subdomain length of SIG-A subdomain
The sum of degree, the length of HE-STF subdomain, the length of MAC data frame, the length of SIFS and the length of M-BA, wherein M is described more
The number of SIG-B subdomain in user PPDU.
In any of the above-described technical solution, it is preferable that when channel width is 20MHz, the value of the M is 1；In channel strip
When width is 40MHz, the value of the M is 2；When channel width is 80MHz, the value of the M is 4；It is 160MHz in channel width
Or when 80MHz+80MHz, the value of the M is 8.
In any of the above-described technical solution, it is preferable that the length of the SIG-A subdomain is 3.2 μ s；The SIG-B subdomain
Length be 3.2 μ s；The length of the HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 s × 5 μ；The length of the HE-LTF subdomain
Are as follows: 6.4 μ s × L or 12.8 μ s × L, wherein L is the positive integer less than or equal to 8.
In any of the above-described technical solution, it is preferable that, may in PPDU no matter PPDU is non-data frame or data frame
Comprising PE (Packet extension, data frame extend) subdomain, it is 8 μ s respectively that wherein there are two types of modes for the length of PE subdomain
With 16 μ s, so needing will be including the length computation of PE subdomain added by PPDU when TXOP length is arranged.
According to the second aspect of the invention, it is also proposed that a kind of communication device of WLAN, comprising: generation unit,
Include SIG-A subdomain in the PPDU for generating PPDU, includes TXOP field in the SIG-A subdomain, wherein in institute
When to state PPDU be non-data frame, the value of the TXOP field is the length of the SIG-A subdomain in the PPDU and is located at SIG-A
The sum of the length of all subdomains after domain, when the PPDU is data frame, the value of the TXOP field is in the PPDU
SIG-A subdomain length, the length of all subdomains after SIG-A subdomain and the confirmation message for being directed to the data frame
The sum of length of frame；Transmission unit, for sending the PPDU.
In the technical scheme, since not need receiving end feeding back confirmation message frame correct to indicate whether for non-data frame
It receives, therefore when PPDU is non-data frame, the value of TXOP field does not have to the length plus confirmation message frame, it is only necessary to be set as
The sum of the length of the length of SIG-A subdomain in PPDU and all subdomains after SIG-A subdomain；And for data
Frame indicates whether data frame is correctly received due to needing receiving end feeding back confirmation message frame, is data frame in PPDU
When, the value of TXOP field will add the length of confirmation message frame, that is, the length for the SIG-A subdomain for needing to be set as in PPDU, position
The length of all subdomains after SIG-A subdomain and the sum of the length of confirmation message frame.As it can be seen that technical solution of the present invention needle
To different types of frame, the length for how calculating the field of the TXOP in PPDU is proposed, PPDU has been effectively ensured and has been transmitted across
It is interference-free in journey, meet the communicating requirement of 802.11ax.
Wherein, non-data frame can be control frame (such as ACK frame, RTS frame, CTS frame), management frame (such as beacon frame, detection
Claim frame, probing response frame etc.) etc..The length refers specifically to occupied time span.
In the above-mentioned technical solutions, it is preferable that when the PPDU is non-data frame, if the PPDU is single user
PPDU, the then value of the TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain with
The sum of the length of MAC data frame；If the PPDU is multi-user PPDU, the value of the TXOP field are as follows: the length of SIG-A subdomain
The sum of degree, length of length × M, HE-LTF subdomain length of SIG-B subdomain, the length of HE-STF subdomain and MAC data frame,
Wherein, M is the number of the SIG-B subdomain in the multi-user PPDU.
In other words, the value of TXOP field eliminates the length of L-STF subdomain in PPDU, L-LTF subdomain and L-SIG subdomain
Degree.
In any of the above-described technical solution, it is preferable that when the PPDU is data frame, if the PPDU is single user
PPDU, the then value of the TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain,
The sum of length, the length of SIFS and length of ACK frame of MAC data frame；Or the value of the TXOP field are as follows: SIG-A subdomain
Length, the length of HE-LTF subdomain, the length of HE-STF subdomain, the length of MAC data frame, the length of N times of SIFS and block are true
Recognize the sum of the length of message frame, wherein N is the number of the MAC data frame.
In the technical scheme, if confirmation message frame is the feedback carried out for single MAC data frame, i.e. confirmation message frame
For ACK, then the value of TXOP field only adds a SIFS length；If confirmation message frame be for multiple MAC data frames into
Capable feedback, i.e. confirmation message frame are block confirmation message frame (BA), then the value of TXOP field need to (N be MAC data frame plus N
Number) a SIFS length.
In any of the above-described technical solution, it is preferable that when the PPDU is data frame, if the PPDU is multi-user
PPDU, the then value of the TXOP field are as follows: length, the length of SIG-B subdomain × M, HE-LTF subdomain length of SIG-A subdomain
The sum of degree, the length of HE-STF subdomain, the length of MAC data frame, the length of SIFS and the length of M-BA, wherein M is described more
The number of SIG-B subdomain in user PPDU.
In any of the above-described technical solution, it is preferable that when channel width is 20MHz, the value of the M is 1；In channel strip
When width is 40MHz, the value of the M is 2；When channel width is 80MHz, the value of the M is 4；It is 160MHz in channel width
Or when 80MHz+80MHz, the value of the M is 8.
In any of the above-described technical solution, it is preferable that the length of the SIG-A subdomain is 3.2 μ s；The SIG-B subdomain
Length be 3.2 μ s；The length of the HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 s × 5 μ；The length of the HE-LTF subdomain
Are as follows: 6.4 μ s × L or 12.8 μ s × L, wherein L is the positive integer less than or equal to 8.
In any of the above-described technical solution, it is preferable that, may in PPDU no matter PPDU is non-data frame or data frame
It include PE subdomain, it is 8 μ s and 16 μ s respectively that wherein there are two types of modes for the length of PE subdomain.Therefore, in setting TXOP length
When, if in PPDU including PE subdomain, needing will be including the length computation of PE subdomain.
According to the third aspect of the invention we, it is also proposed that a kind of access point, comprising: such as any one of above-mentioned technical proposal institute
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 one of above-mentioned technical proposal
WLAN communication device.
By above technical scheme, it can be directed to different types of frame, propose the length for calculating the TXOP field in PPDU,
It is interference-free in transmission process that PPDU has been effectively ensured, has met the communicating requirement of 802.11ax.
Detailed description of the invention
Fig. 1 shows the schematic flow diagram of the communication means of the WLAN of embodiment according to the present invention；
Fig. 2 shows the schematic block diagrams of the communication device of the WLAN of embodiment according to the present invention；
Fig. 3 shows the schematic block diagram of the access point of embodiment according to the present invention；
Fig. 4 shows the schematic block diagram of the website of 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. 1 shows the schematic flow diagram of the communication means of the WLAN of embodiment according to the present invention.
As shown in Figure 1, the communication means of the WLAN of embodiment according to the present invention, comprising:
Step S10 generates PPDU, includes SIG-A subdomain in the PPDU, includes TXOP word in the SIG-A subdomain
Section, wherein when the PPDU is non-data frame, the value of the TXOP field is the length of the SIG-A subdomain in the PPDU
With the sum of the length of all subdomains after SIG-A subdomain, when the PPDU is data frame, the value of the TXOP field
The length of all subdomains for the length of the SIG-A subdomain in the PPDU, after SIG-A subdomain be directed to the data
The sum of the length of the confirmation message frame of frame.
Step S12 sends the PPDU.
In the technical scheme, since not need receiving end feeding back confirmation message frame correct to indicate whether for non-data frame
It receives, therefore when PPDU is non-data frame, the value of TXOP field does not have to the length plus confirmation message frame, it is only necessary to be set as
The sum of the length of the length of SIG-A subdomain in PPDU and all subdomains after SIG-A subdomain；And for data
Frame indicates whether data frame is correctly received due to needing receiving end feeding back confirmation message frame, is data frame in PPDU
When, the value of TXOP field will add the length of confirmation message frame, that is, the length for the SIG-A subdomain for needing to be set as in PPDU, position
The length of all subdomains after SIG-A subdomain and the sum of the length of confirmation message frame.As it can be seen that technical solution of the present invention needle
To different types of frame, the length for how calculating the field of the TXOP in PPDU is proposed, PPDU has been effectively ensured and has been transmitted across
It is interference-free in journey, meet the communicating requirement of 802.11ax.
Wherein, non-data frame can be control frame (such as ACK frame, RTS frame, CTS frame), management frame (such as beacon frame, detection
Claim frame, probing response frame etc.) etc..The length refers specifically to occupied time span.
It is illustrated respectively below for different types of frame:
1, PPDU is non-data frame and is single user PPDU.
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length and MAC of HE-STF subdomain
The sum of length of data frame.
In one embodiment of the invention, the length of SIG-A subdomain is 3.2 μ s；The length of HE-STF subdomain are as follows: 0.8 μ
S × 5 or 1.6 s × 5 μ；The length of HE-LTF subdomain are as follows: 6.4 μ s × L or 12.8 μ s × L, wherein L is just less than or equal to 8
Integer.
2, PPDU is non-data frame and is multi-user PPDU.
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of SIG-B subdomain × M, HE-LTF subdomain length,
The length of HE-STF subdomain and the sum of the length of MAC data frame, wherein M is of the SIG-B subdomain in the multi-user PPDU
Number.
Wherein, when channel width is 20MHz, the value of the M is 1；When channel width is 40MHz, the value of the M is
2；When channel width is 80MHz, the value of the M is 4；When channel width is 160MHz or 80MHz+80MHz, the M's
Value is 8.
In one embodiment of the invention, the length of SIG-A subdomain is 3.2 μ s；The length of SIG-B subdomain is 3.2 μ s；
The length of HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 s × 5 μ；The length of HE-LTF subdomain are as follows: 6.4 μ s × L or 12.8 μ s × L,
Wherein L is the positive integer less than or equal to 8.CP (Cyclic Prefix, the cyclic prefix) length of SIG-B subdomain is 0.8 μ s.
3, PPDU is data frame and is single user PPDU.
The value of TXOP field is divided into two kinds of situations:
Situation one:
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain, MAC
The sum of length, the length of SIFS and length of ACK frame of data frame.In situation one, confirmation message frame is for single MAC number
According to the feedback that frame carries out, i.e. confirmation message frame is ACK, then the value of TXOP field only adds a SIFS length.
Situation two:
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain, MAC
The sum of the length of data frame, the length of N times of SIFS and length of block confirmation message frame, wherein N is the MAC data frame
Number.
In situation two, confirmation message frame is the feedback carried out for multiple MAC data frames, i.e., confirmation message frame is BA,
Then the value of TXOP field need to be plus N (number that N is MAC data frame) a SIFS length.
In one embodiment of the invention, the length of SIG-A subdomain is 3.2 μ s；The length of SIG-B subdomain is 3.2 μ s；
The length of HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 s × 5 μ；The length of HE-LTF subdomain are as follows: 6.4 μ s × L or 12.8 μ s × L,
Wherein L is the positive integer less than or equal to 8.
4, PPDU is data frame and is multi-user PPDU.
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of SIG-B subdomain × M, HE-LTF subdomain length,
The sum of the length of HE-STF subdomain, the length of MAC data frame, the length of SIFS and length of M-BA, wherein M is described multi-purpose
The number of SIG-B subdomain in the PPDU of family.
Wherein, when channel width is 20MHz, the value of the M is 1；When channel width is 40MHz, the value of the M is
2；When channel width is 80MHz, the value of the M is 4；When channel width is 160MHz or 80MHz+80MHz, the M's
Value is 8.
In one embodiment of the invention, the length of the SIG-A subdomain is 3.2 μ s；The length of the SIG-B subdomain
For 3.2 μ s；The length of the HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 s × 5 μ；The length of the HE-LTF subdomain are as follows: 6.4 μ
S × L or 12.8 μ s × L, wherein L is the positive integer less than or equal to 8.
It may include PE in PPDU no matter PPDU is non-data frame or data frame in any of the above-described embodiment
Subdomain, it is 8 μ s and 16 μ s respectively that wherein there are two types of modes for the length of PE subdomain.Therefore, when TXOP length is arranged, if PPDU
In include PE subdomain, needing will be including the length computation of PE subdomain.
Wherein, the executing subject of communication means shown in Fig. 1 can be the router etc. as access point, be also possible to
Mobile phone or PDA (Personal Digital Assistant, palm PC) etc. as website.
Fig. 2 shows the schematic block diagrams of the communication device of the WLAN of embodiment according to the present invention.
As shown in Fig. 2, the communication device 200 of the WLAN of embodiment according to the present invention, comprising: generation unit
202 and transmission unit 204.
Wherein, generation unit 202 includes SIG-A subdomain in the PPDU for generating PPDU, the SIG-A subdomain
In include TXOP field, wherein when the PPDU is non-data frame, the value of the TXOP field is the SIG- in the PPDU
The sum of the length of the length of A subdomain and all subdomains after SIG-A subdomain, it is described when the PPDU is data frame
The value of TXOP field be the length of the SIG-A subdomain in the PPDU, the length of all subdomains after SIG-A subdomain with
For the sum of the length of the confirmation message frame of the data frame；Transmission unit 204 is for sending the PPDU.
In specific implementation, generation unit 202 can be signal processor, central processing unit or baseband processor etc.；Hair
Unit 204 is sent to can be transmitter or antenna etc..
Specifically, it indicates whether to be correctly received since non-data frame does not need receiving end feeding back confirmation message frame,
Therefore when PPDU is non-data frame, the value of TXOP field does not have to the length plus confirmation message frame, it is only necessary to be set as in PPDU
SIG-A subdomain length and all subdomains after SIG-A subdomain the sum of length；And for data frame, by
Indicate whether data frame is correctly received in needing receiving end feeding back confirmation message frame, therefore when PPDU is data frame,
The value of TXOP field will add the length of confirmation message frame, that is, the length for the SIG-A subdomain for needing to be set as in PPDU is located at
The length of all subdomains after SIG-A subdomain and the sum of the length of confirmation message frame.As it can be seen that technical solution of the present invention is directed to
Different types of frame proposes the length for how calculating the field of the TXOP in PPDU, and PPDU has been effectively ensured in transmission process
In it is interference-free, meet the communicating requirement of 802.11ax.
Wherein, non-data frame can be control frame (such as ACK frame, RTS frame, CTS frame), management frame (such as beacon frame, detection
Claim frame, probing response frame etc.) etc..The length refers specifically to occupied time span.
For different types of frame, the present invention proposes corresponding TXOP calculation method respectively, specific as follows:
1, PPDU is non-data frame and is single user PPDU.
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length and MAC of HE-STF subdomain
The sum of length of data frame.
In one embodiment of the invention, the length of SIG-A subdomain is 3.2 μ s；The length of HE-STF subdomain are as follows: 0.8 μ
S × 5 or 1.6 s × 5 μ；The length of HE-LTF subdomain are as follows: 6.4 μ s × L or 12.8 μ s × L, wherein L is just less than or equal to 8
Integer.
2, PPDU is non-data frame and is multi-user PPDU.
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of SIG-B subdomain × M, HE-LTF subdomain length,
The length of HE-STF subdomain and the sum of the length of MAC data frame, wherein M is of the SIG-B subdomain in the multi-user PPDU
Number.
Wherein, when channel width is 20MHz, the value of the M is 1；When channel width is 40MHz, the value of the M is
2；When channel width is 80MHz, the value of the M is 4；When channel width is 160MHz or 80MHz+80MHz, the M's
Value is 8.
In one embodiment of the invention, the length of SIG-A subdomain is 3.2 μ s；The length of SIG-B subdomain is 3.2 μ s；
The length of HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 s × 5 μ；The length of HE-LTF subdomain are as follows: 6.4 μ s × L or 12.8 μ s × L,
Wherein L is the positive integer less than or equal to 8.
3, PPDU is data frame and is single user PPDU.
The value of TXOP field is divided into two kinds of situations:
Situation one:
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain, MAC
The sum of length, the length of SIFS and length of ACK frame of data frame.In situation one, confirmation message frame is for single MAC number
According to the feedback that frame carries out, i.e. confirmation message frame is ACK, then the value of TXOP field only adds a SIFS length.
Situation two:
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain, MAC
The sum of the length of data frame, the length of N times of SIFS and length of block confirmation message frame, wherein N is the MAC data frame
Number.
In situation two, confirmation message frame is the feedback carried out for multiple MAC data frames, i.e., confirmation message frame is BA,
Then the value of TXOP field need to be plus N (number that N is MAC data frame) a SIFS length.
In one embodiment of the invention, the length of SIG-A subdomain is 3.2 μ s；The length of SIG-B subdomain is 3.2 μ s；
The length of HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 s × 5 μ；The length of HE-LTF subdomain are as follows: 6.4 μ s × L or 12.8 μ s × L,
Wherein L is the positive integer less than or equal to 8.
4, PPDU is data frame and is multi-user PPDU.
The value of TXOP field are as follows: the length of SIG-A subdomain, the length of SIG-B subdomain × M, HE-LTF subdomain length,
The sum of the length of HE-STF subdomain, the length of MAC data frame, the length of SIFS and length of M-BA, wherein M is described multi-purpose
The number of SIG-B subdomain in the PPDU of family.
Wherein, when channel width is 20MHz, the value of the M is 1；When channel width is 40MHz, the value of the M is
2；When channel width is 80MHz, the value of the M is 4；When channel width is 160MHz or 80MHz+80MHz, the M's
Value is 8.
In one embodiment of the invention, the length of the SIG-A subdomain is 3.2 μ s；The length of the SIG-B subdomain
For 3.2 μ s；The length of the HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 s × 5 μ；The length of the HE-LTF subdomain are as follows: 6.4 μ
S × L or 12.8 μ s × L, wherein L is the positive integer less than or equal to 8.
It may include PE in PPDU no matter PPDU is non-data frame or data frame in any of the above-described embodiment
Subdomain, it is 8 μ s and 16 μ s respectively that wherein there are two types of modes for the length of PE subdomain.Therefore, when TXOP length is arranged, if PPDU
In include PE subdomain, needing will be including the length computation of PE subdomain.
Fig. 3 shows the schematic block diagram of the access point of embodiment according to the present invention.
As shown in figure 3, the access point 300 of embodiment according to the present invention, comprising: WLAN as shown in Figure 2
Communication device 200.
Fig. 4 shows the schematic block diagram of the website of embodiment according to the present invention.
As shown in figure 4, the website 400 of embodiment according to the present invention, comprising: WLAN as shown in Figure 2
Communication device 200.
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, can be directed to different types of frame, propose calculate PPDU in TXOP field length, PPDU has been effectively ensured
It is interference-free in transmission process, meet the communicating requirement of 802.11ax.
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
PPDU is generated, includes SIG-A subdomain in the PPDU, includes TXOP field in the SIG-A subdomain, wherein in institute
When to state PPDU be non-data frame, the value of the TXOP field is the length of the SIG-A subdomain in the PPDU and is located at SIG-A
The sum of the length of all subdomains after domain, when the PPDU is data frame, the value of the TXOP field is in the PPDU
SIG-A subdomain length, the length of all subdomains after SIG-A subdomain and the confirmation message for being directed to the data frame
The sum of length of frame；
Send the PPDU；
Wherein, when the PPDU is non-data frame,
If the PPDU is single user PPDU, the value of the TXOP field are as follows: the length of SIG-A subdomain, HE-LTF subdomain
The sum of length, the length of HE-STF subdomain and length of MAC data frame；
If the PPDU is multi-user PPDU, the value of the TXOP field are as follows: length, the length of SIG-B subdomain of SIG-A subdomain
The sum of degree × M, HE-LTF subdomain length, the length of HE-STF subdomain and length of MAC data frame, wherein M is described multi-purpose
The number of SIG-B subdomain in the PPDU of family.
2. the communication means of WLAN according to claim 1, which is characterized in that the PPDU be data frame
When,
If the PPDU is single user PPDU, the value of the TXOP field are as follows: the length of SIG-A subdomain, HE-LTF subdomain
The sum of length, the length of HE-STF subdomain, the length of MAC data frame, the length of SIFS and length of ACK frame；Or the TXOP
The value of field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain, the length of MAC data frame,
The length of N times of SIFS and the sum of the length of block confirmation message frame, wherein N is the number of the MAC data frame；
If the PPDU is multi-user PPDU, the value of the TXOP field are as follows: length, the length of SIG-B subdomain of SIG-A subdomain
Degree × the length of M, HE-LTF subdomain, the length of HE-STF subdomain, the length of MAC data frame, the length of the length of SIFS and M-BA
The sum of degree, wherein M is the number of the SIG-B subdomain in the multi-user PPDU.
3. the communication means of WLAN according to claim 1 or 2, it is characterised in that:
When channel width is 20MHz, the value of the M is 1；
When channel width is 40MHz, the value of the M is 2；
When channel width is 80MHz, the value of the M is 4；
When channel width is 160MHz or 80MHz+80MHz, the value of the M is 8.
4. the communication means of WLAN according to claim 1 or 2, it is characterised in that: the length of the SIG-A subdomain
Degree is 3.2 μ s；The length of the SIG-B subdomain is 3.2 μ s；The length of the HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 μ s ×
5；The length of the HE-LTF subdomain are as follows: 6.4 μ s × L or 12.8 μ s × L, wherein L is the positive integer less than or equal to 8.
5. a kind of communication device of WLAN characterized by comprising
Generation unit includes SIG-A subdomain in the PPDU for generating PPDU, includes TXOP word in the SIG-A subdomain
Section, wherein when the PPDU is non-data frame, the value of the TXOP field is the length of the SIG-A subdomain in the PPDU
With the sum of the length of all subdomains after SIG-A subdomain, when the PPDU is data frame, the value of the TXOP field
The length of all subdomains for the length of the SIG-A subdomain in the PPDU, after SIG-A subdomain be directed to the data
The sum of the length of the confirmation message frame of frame；
Transmission unit, for sending the PPDU；
Wherein, when the PPDU is non-data frame,
If the PPDU is single user PPDU, the value of the TXOP field are as follows: the length of SIG-A subdomain, HE-LTF subdomain
The sum of length, the length of HE-STF subdomain and length of MAC data frame；
If the PPDU is multi-user PPDU, the value of the TXOP field are as follows: length, the length of SIG-B subdomain of SIG-A subdomain
The sum of degree × M, HE-LTF subdomain length, the length of HE-STF subdomain and length of MAC data frame, wherein M is described multi-purpose
The number of SIG-B subdomain in the PPDU of family.
6. the communication device of WLAN according to claim 5, which is characterized in that the PPDU be data frame
When,
If the PPDU is single user PPDU, the value of the TXOP field are as follows: the length of SIG-A subdomain, HE-LTF subdomain
The sum of length, the length of HE-STF subdomain, the length of MAC data frame, the length of SIFS and length of ACK frame；Or the TXOP
The value of field are as follows: the length of SIG-A subdomain, the length of HE-LTF subdomain, the length of HE-STF subdomain, the length of MAC data frame,
The length of N times of SIFS and the sum of the length of block confirmation message frame, wherein N is the number of the MAC data frame；
If the PPDU is multi-user PPDU, the value of the TXOP field are as follows: length, the length of SIG-B subdomain of SIG-A subdomain
Degree × the length of M, HE-LTF subdomain, the length of HE-STF subdomain, the length of MAC data frame, the length of the length of SIFS and M-BA
The sum of degree, wherein M is the number of the SIG-B subdomain in the multi-user PPDU.
7. the communication device of WLAN according to claim 5 or 6, it is characterised in that:
When channel width is 20MHz, the value of the M is 1；
When channel width is 40MHz, the value of the M is 2；
When channel width is 80MHz, the value of the M is 4；
When channel width is 160MHz or 80MHz+80MHz, the value of the M is 8.
8. the communication device of WLAN according to claim 5 or 6, it is characterised in that: the length of the SIG-A subdomain
Degree is 3.2 μ s；The length of the SIG-B subdomain is 3.2 μ s；The length of the HE-STF subdomain are as follows: 0.8 s × 5 μ or 1.6 μ s ×
5；The length of the HE-LTF subdomain are as follows: 6.4 μ s × L or 12.8 μ s × L, wherein L is the positive integer less than or equal to 8.
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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| CN116319228B (en) | 2018-07-27 | 2023-10-20 | 华为技术有限公司 | Method and device for designing short training sequence |
| CN111953630A (en) * | 2019-05-14 | 2020-11-17 | 华为技术有限公司 | Method and apparatus for transmitting and receiving physical layer protocol data unit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1993944A (en) * | 2004-06-02 | 2007-07-04 | 高通股份有限公司 | Method and apparatus for scheduling in a wireless network |
| CN101981996A (en) * | 2008-04-03 | 2011-02-23 | 高通股份有限公司 | Interference management messaging involving termination of a request for reduction in interference |
| CN104320173A (en) * | 2010-06-29 | 2015-01-28 | Lg电子株式会社 | Method and apparatus for transmitting data frame in WLAN system |
| CN105144634A (en) * | 2012-12-14 | 2015-12-09 | 华为技术有限公司 | Systems and methods to achieve fairness in wireless LANs for cellular offloading |
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| US7417974B2 (en) * | 2004-04-14 | 2008-08-26 | Broadcom Corporation | Transmitting high rate data within a MIMO WLAN |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1993944A (en) * | 2004-06-02 | 2007-07-04 | 高通股份有限公司 | Method and apparatus for scheduling in a wireless network |
| CN101981996A (en) * | 2008-04-03 | 2011-02-23 | 高通股份有限公司 | Interference management messaging involving termination of a request for reduction in interference |
| CN104320173A (en) * | 2010-06-29 | 2015-01-28 | Lg电子株式会社 | Method and apparatus for transmitting data frame in WLAN system |
| CN105144634A (en) * | 2012-12-14 | 2015-12-09 | 华为技术有限公司 | Systems and methods to achieve fairness in wireless LANs for cellular offloading |
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