CN103326838B - A kind of transmission method and site apparatus for discharging channel access configured information - Google Patents
A kind of transmission method and site apparatus for discharging channel access configured information Download PDFInfo
- Publication number
- CN103326838B CN103326838B CN201210074578.2A CN201210074578A CN103326838B CN 103326838 B CN103326838 B CN 103326838B CN 201210074578 A CN201210074578 A CN 201210074578A CN 103326838 B CN103326838 B CN 103326838B
- Authority
- CN
- China
- Prior art keywords
- radio frames
- channel access
- frame
- physical layer
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
- H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of transmission method and site apparatus for discharging channel access configured information, belong to the crossing domain of computer network and wireless communication.The transmission method of release channel access configured information disclosed by the invention, including：Transmitting station sends radio frames, and release channel access configured information is carried in the signaling domain of the physical layer frame head of the radio frames；Receiving station receives the radio frames, resets the network allocation vector (NAV) of this website.The invention also discloses a kind of site apparatus.Technical scheme effectively reduces traffic load expense, reduces power consumption while ensuring to complete release channel instruction function.In addition, the most reliable Modulation and Coding Scheme of physical layer signaling generally use, function instruction is positioned in physical layer signaling and is transmitted, can improve the reliability of transmission.
Description
Technical field
The invention belongs to computer network and the crossing domain of wireless communication, and in particular to a kind of release channel access
Implementation.
Background technology
Currently, in field of wireless, WLAN (WLAN) is fast-developing, the WLAN covering demand days in the whole world pair
Benefit increases.Institute of Electrical and Electric Engineers industrial specification IEEE802.11 working groups successively define 802.11a,
A series of WLAN technical standards such as 802.11b, 802.11g, mainly formulate physical layer (PHY) and media access control (MAC) layer
Specification.Then occur other task groups successively, be directed to the specification that development is related to existing 802.11 technological improvement.For example,
802.11ah task groups are utilized mainly for the resource for exempting from licensed band below 1GHz frequency ranges, for supporting intelligent electricity
The new network applications such as net, sensor network, Cellular Networks load balancing.
802.11ah task groups are when formulating its technical specification, it is desirable to which the technical specification of 802.11ah is continued to use existing as far as possible
802.11 series technical specifications, also can be to existing technology while in order to meet 802.11ah specific attributes in itself
Specification does technical specification suitably modified or that formulation is new.802.11ah task groups determine that the bandwidth of operation of technology can be with present
For 1/2/4/8/16MHz, using OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency
Multiplexing) modulation technique, each OFDM symbol (including long protection interval) duration is 40 μ s, this relatively existing 802.11
The required time of holding of each OFDM symbol expands 10 times in series standard.In other words, identical information is sent, is used
The equipment power dissipation of 802.11ah technical specifications will meet 10 times that have 802.11 technical specification equipment, but meets
The equipment of 802.11ah technical specifications has high requirements in energy-saving square face, thus this is just needed with more brief information biography
Mode is passed, to complete corresponding function.
In existing 802.11 technical specification, its basic network architecture be an access website (access point,
Abbreviation AP) and with the associated multiple non-access sites (non-AP Station, abbreviation STA) of AP constitute a basic clothes
Business collection (basic service set, abbreviation BSS), each Basic Service Set has a basic service set identifier (basic
Service set identifier, abbreviation BSSID)., all can be pre- after any one website access channel when being transmitted
An about channel access time, and when auditing website and parsing this subscription time and determine whether to be preengage with this according to certain rule
Between value update the network allocation vector (network allocation vector, abbreviation NAV) of this website, the value of NAV be with
What the time successively decreased, when auditing the NAV of website and being not zero, channel access will not be carried out.But during the channel access of website reservation
Between may be more than time of actual access channel, in order to improve the utilization rate of channel, the website of reserve channel can be with this time
Channel is discharged before terminating in the channel access time preengage, and allows to audit website and terminates to wait and carry out channel competition
Access procedure.Release channel (also has and nearest receiving frame is carried out particular by CF-End or CF-End+CF-Ack at present
Receiving the function of confirming) two mac frames complete.Frame control is used to indicate frame type etc. in the two mac frame lattice, continues
The channel access time of time instruction reservation, above two frame all reset this domain to complete the function of release channel.In addition this
Two frames have a common part on form, they are the mac frames of no mac layer frame load.
In existing 802.11 technical specification, the signaling domain of the physical frame header of a radio frames generally comprises LENGTH/
DURATION subdomains, STBC subdomains, MCS (modulation and coding scheme, demodulation coding) subdomain, coding
Type subdomain, CRC (cyclic redundancy code) subdomain such as subdomain and reservation bit, this signaling domain is referred herein to
Be general signaling domain, physical frame load is generally followed by after signaling domain, and the information of some subdomains in signaling domain is usual
Both for physical frame load, such as MCS subdomains, instruction physical frame loads the Modulation and Coding Scheme used.An if nothing
The not carries physical-layer load of line frame, then without what if some subdomains such as MCS subdomains in the signaling domain of physical frame header
Meaning.
The content of the invention
The technical problem to be solved by the invention is to provide it is a kind of discharge channel access configured information transmission method and
Site apparatus, so as to realize release channel instruction function with less resource.
In order to solve the above-mentioned technical problem, the invention discloses it is a kind of discharge channel access configured information transmission method,
Including：
Transmitting station sends radio frames, and release channel access is carried in the signaling domain of the physical layer frame head of the radio frames and is referred to
Show information；
Receiving station receives the radio frames, resets the network allocation vector (NAV) of this website.
It is preferred that in the above method, the release channel access configured information is frame type indication information, the frame class
Type refers to the frame type for having the function of to discharge channel access, or has the function of the frame class for discharging channel access and frame acknowledgment function
Type.
It is preferred that in the above method, when the transmitting station sends radio frames, the physical layer frame head of radio frames is multiplexed
In signaling domain one or more subdomains with carry it is described release channel access configured information, wherein, pass through be multiplexed 1 or more
The value of a subdomain indicate this radio frames frame type be have the function of discharge channel access frame type, or for
Discharge the frame type of channel access function and frame acknowledgment function.
It is preferred that in the above method, when demodulation coding (MCS) in the signaling domain of the physical layer frame head of multiplexing radio frames
When subdomain is to carry the release channel access configured information, the frame type for indicating this radio frames by MCS subdomain values indicates
Information, wherein, the value of MCS subdomains is still untapped value；
Alternatively, MCS subdomains and other subdomains are to carry in the general signaling domain for the physical layer frame head that ought be multiplexed radio frames
When stating release channel access configured information, the frame of this radio frames is indicated by the joint value of MCS subdomains and other subdomains
Type indication information, described to combine in value, the value of MCS subdomains is the value that this subdomain not yet uses.
It is preferred that in the above method, Basic Service Set mark is also included in the signaling domain of the physical layer frame head of the radio frames
Know symbol (BSSID) information or part BSSID information, the part BSSID information refer to compressed BSSID information.
It is preferred that in the above method, cyclic redundancy check is further included in the signaling domain of the physical layer frame head of the radio frames
Information；Wherein, the cyclic redundancy check information is the check information of signaling domain information, or for signaling domain information and is added
The joint check information of information.
It is preferred that in the above method, the additional information is BSSID information, or is part BSSID information, the portion
BSSID information is divided to refer to compressed BSSID information.
It is preferred that in the above method, the physical layer frame head of the radio frames further includes short training sequence domain, long training sequence
Domain is arranged, the long training sequence domain is made of multiple Orthogonal Frequency Division Multiplexing (OFDM) symbol.
It is preferred that in the above method, the radio frames only include physical layer frame head.
It is preferred that in the above method, it is poor that the phase in the long training sequence domain between at least two OFDM symbols exists
In the different time, indicate to carry release channel access configured information in this physical layer frame head；
After the receiving station receives the radio frames, according to the long training sequence domain of the physical layer frame head of the radio frames
Phase difference between middle OFDM symbol determines the signaling domain of the physical layer frame head of the radio frames and non-universal signaling domain, then obtains
Frame type indication information domain in the signaling domain of the physical layer frame head of the radio frames, it is with release channel access to determine this frame
The frame of function has the function of to discharge channel access and the frame of frame acknowledgment function.
It is preferred that the above method further includes：When the receiving station is access point, the radio frames are received, it is short at one
After frame interframe space, sending one has the function of the response frame for discharging channel access.
The invention also discloses a kind of site apparatus, including：
First module, when no longer accessing the channel before the end time of the channel access of this website reservation, sends nothing
Line frame, release channel access configured information is carried in the signaling domain of the physical layer frame head of the radio frames；
Second module, receive other websites transmission radio frames, when received radio frames physical layer frame head signaling
During the release channel access configured information carried in domain, the network allocation vector (NAV) of this website is reset.
It is preferred that in the said equipment, the release channel access configured information is frame type indication information, the frame class
Type refers to the frame for having the function of to discharge channel access, or has the function of to discharge channel access and the frame of frame acknowledgment function.
It is preferred that in the said equipment, first module, in the signaling domain for the physical layer frame head for being multiplexed radio frames 1 or
Multiple subdomains to carry the release channel access configured information, wherein, pass through the values of one or more subdomains being multiplexed
The frame type for indicating this radio frames is the frame type for having the function of to discharge channel access, or for release channel access
The frame type of function and frame acknowledgment function.
It is preferred that in the said equipment, when in the signaling domain of the physical layer frame head of multiplexing radio frames MCS subdomains to carry
When stating release channel access configured information, the frame type indication information of this radio frames is indicated by MCS subdomain values, wherein,
The value of MCS subdomains is still untapped value；
When in the general signaling domain of the physical layer frame head of multiplexing radio frames MCS subdomains and other subdomains to carry described release
When putting channel access configured information, the frame type of this radio frames is indicated by the joint value of MCS subdomains and other subdomains
Configured information, described to combine in value, the value of MCS subdomains is the value that this subdomain not yet uses.
It is preferred that in the said equipment, the physical layer frame head of the radio frames further includes short training sequence domain, long training sequence
Domain is arranged, the long training sequence domain is made of multiple Orthogonal Frequency Division Multiplexing (OFDM) symbol.
It is preferred that in the said equipment, first module, passes through the long training sequence of the physical layer frame head of the radio frames
Phase difference in row domain between at least two OFDM symbols is referred to indicating to carry release channel access in this physical layer frame head
Show information.
It is preferred that in the said equipment, when this site apparatus is access point, second module receives carrying release letter
After the radio frames of road access configured information, after one short frame interframe space, received radio frames are forwarded.
Technical scheme effectively reduces traffic load and opens while ensuring to complete release channel instruction function
Pin, reduces power consumption.In addition, the most reliable Modulation and Coding Scheme of physical layer signaling generally use, physics is positioned over by function instruction
Transmitted in layer signaling, the reliability of transmission can be improved.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, technical solution of the present invention will hereafter be made
It is further described.It should be noted that in the case where there is no conflict, the feature in embodiments herein and embodiment
Can arbitrarily it be mutually combined.
Embodiment 1
It is found by the applicant that release channel (also has to most proximity particular by CF-End or CF-End+CF-Ack at present
Receive the function that frame receive confirmation) for two mac frames come what is completed, i.e., what the two frames were mainly completed is that a function indicates.
But the two mac frames are limited to Generic Frame Format, many unnecessary information are all carried, such as the duration resets, this ginseng
Number is fixed value (value that receiving-transmitting sides are all given tacit consent to).So as to cause the wasting of resources, therefore applicant newly proposes a kind of release channel
Access configured information transmission plan, the program be mainly a certain website its channel access preengage end time it
It is preceding when no longer accessing the channel, the function instruction of release channel access is realized, and it is less to take resource.Specifically, the program
Realize that process is as follows：
Transmitting station sends radio frames, wherein, in the signaling domain of the physical layer frame head of the radio frames, carry release letter
Road accesses configured information；
Receiving station receives the radio frames, resets the NAV of oneself.
In the present embodiment, receiving station, can be according to the physical layer frame head of the radio frames after above-mentioned radio frames are received
Signaling domain in entrained release channel access configured information reset the NAV of itself.
In the present embodiment, above-mentioned release channel access configured information is frame type indication information, and frame type refers to releasing
The frame type (such as CF-End) of channel access function is put, or refers to the frame with release channel access and frame acknowledgment function
Type (such as CF-End+CF-Ack).Specifically, one or more of signaling domain subdomain can be multiplexed to carry release letter
Road accesses configured information, and passes through the values of the one or more subdomains being multiplexed to indicate frame type.For example, multiplexing one
During subdomain, MCS subdomains in the signaling domain for the physical layer frame head that can be multiplexed radio frames, at this time, pass through the value of the MCS subdomains
The frame type that may indicate that this radio frames is the frame type for having the function of to discharge channel access, or to be connect with release channel
Enter the frame type of function and frame acknowledgment function.But it is noted that during multiplexing MCS subdomains, the value of MCS subdomains is not yet to make
Value, i.e., the value that MCS subdomains do not use also in existing signaling domain, in this way, would not be existing with MCS subdomains
Each value conflict, so as to avoid maloperation.Similarly, when being multiplexed multiple subdomains, the physical layer frame head of radio frames can be multiplexed
MCS subdomains and other subdomains in signaling domain, at this time, the joint value instruction of the MCS subdomains and other subdomains of multiplexing is originally wireless
The frame type indication information of frame.Similarly, combine in value, the value of MCS subdomains is the value that this subdomain not yet uses.On
Signaling domain is stated in addition to comprising release channel access configured information, it is also possible to believe comprising BSSID information, or part BSSID
Breath, BSSID information in part herein refer to compressed BSSID information.In addition signaling domain further includes cyclic redundancy check letter
Breath, cyclic redundancy check information are the check informations to signaling domain information, or the connection to signaling domain information and additional information
Close check information.Wherein additional information is BSSID information, or part BSSID information.
It should also be noted that when if receiving station is just access point, above-mentioned radio frames are received, in one short frame frame
Between be spaced after, you can forward above-mentioned radio frames.
On the basis of such scheme, applicant proposes a kind of preferred solution, i.e., Short Training is included in physical layer frame head
Sequence domain, long training sequence domain and signaling domain.Wherein, the information carried in signaling domain is as described by such scheme.And grow training
Sequence domain can be made of multiple OFDM symbols, and there are phase difference between at least two OFDM symbols in this multiple OFDM symbol
It is different, that is, indicate to carry release channel access configured information in the signaling domain of receiving station physical layer frame head.Further, since this
Radio frames are mainly used for instruction release channel access, and this indicative purpose is had been realized in by physical layer frame head, also with regard to nothing
Domain need to be loaded, therefore the radio frames from resource utilization, preferred solution described in the present embodiment can only include physics
Layer frame head.
The transmitting procedure of above-mentioned release channel access configured information is further described in conjunction with concrete application scene below.
In one 802.11ah of scene, when network insertion pattern uses distributed coordination function (DCF, Distributed
Coordination Function) or enhanced distributed coordination access function (EDCA, Enhanced
Distributed Channel Access) pattern when, if a non-AP website or access point AP competition connect to channel
Enter chance, set mark is, and is subscribed to a channel access duration by the frame of its transmission, it is assumed that channel
The end time of access is t1.
The t2 moment before being reached at the t1 moment, sta-1 because sent all data cached or other reasons without
Channel is accessed again, and sta-1 will send a frame with release channel access at this time, the physics of this frame in the present embodiment
Only three domains are included in layer frame head：Short training sequence domain, long training sequence domain and signaling domain.Wherein, phase in long training sequence domain
Two adjacent OFDM symbols have a definite phase offset, to indicate to carry release channel access configured information in frame head
(in this example be frame type indication information), the frame type indication information in signaling domain indicate that this frame is one and has release letter
The frame of road access function, and also carry part BSSID, cyclic redundancy check sequence in this frame signaling domain.This cyclic redundancy
Verification sequence can be following thrins, but must be that receiving-transmitting sides are appointed in advance：
Individually for the verification sequence in signaling domain, sequence is verified for the joint of part BSSID for signaling domain and additional information
Row, for the joint verification sequence that signaling domain and additional information are BSSID.
And the website of above-mentioned frame is received, by parsing in physical layer frame head adjacent OFDM symbol in long training sequence domain
Difference, conclude that it is after being not used in the signaling domain in general signaling domain to receive signaling domain, detects cyclic redundancy check sequence, if wrong
By mistake, then this frame is abandoned, if verification is correct, further parses the frame type indication information in the signaling domain received, conclude this
Frame is the frame for having the function of to discharge channel access, such as CF-End frames, then this receiving station will reset the NAV of oneself, together
When can enter backoff processes.
Scene two
In 802.11ah, when network insertion pattern uses distributed coordination function (DCF, Distributed
Coordination Function) or enhanced distributed coordination access function (EDCA, Enhanced
Distributed Channel Access) pattern when, if a non-AP website or access point AP competition connect to channel
Enter chance, set mark is, and is subscribed to a channel access duration by the frame of its transmission, it is assumed that channel
The end time of access is t1.
The t2 moment before being reached at the t1 moment, sta-1 because sent all data cached or other reasons without
Channel is accessed again, and sta-1 will send a frame with release channel access at this time, the physics of this frame in the present embodiment
Layer frame head only includes three domains：Short training sequence domain, long training sequence domain and signaling domain.Frame class is done in the multiplexing of MCS domains in signaling domain
Type instructions field (carries release channel access configured information) by MCS subdomains, and set the value in this domain is to indicate this frame
One has the function of the frame type for discharging channel access, wherein, the value of MCS is the still untapped value of MCS subdomains.This frame
Part BSSID is also carried in signaling domain, cyclic redundancy check sequence, this cyclic redundancy check sequence are also at least carried in signaling domain
Row are following thrins, but must be that receiving-transmitting sides are appointed in advance：
Individually for the verification sequence in signaling domain, sequence is verified for the joint of part BSSID for signaling domain and additional information
Row, for the joint verification sequence that signaling domain and additional information are BSSID.
The website of above-mentioned frame is received, cyclic redundancy check sequence is detected, if mistake, abandons this frame, if verification
Correctly, then MCS subdomains are further parsed, if its value not within normal value range, concludes that it is not to receive signaling domain
For the signaling domain in general signaling domain, according to the value in MCS domains, it is the frame for having the function of to discharge channel access to conclude this frame,
Such as CF-End frames, then this receiving station will reset the NAV of oneself, while can enter backoff processes.
Scene three
In 802.11ah, when network insertion pattern uses point coordination function (PCF, Point Coordination
Function) during pattern, if after access point AP receives the data of the transmission of the website of its scheduling, it is desirable to terminate in advance non-
The competition phase, AP, which will send one, has the function of release channel access and the frame of frame acknowledgment function, the thing of this frame in the present embodiment
Reason layer frame head only includes three domains：Short training sequence domain, long training sequence domain and signaling domain.Wherein, phase in long training sequence domain
Two adjacent OFDM symbols have a definite phase offset to indicate to carry release channel access configured information in frame head
(in this example be frame type indication information), the frame type subdomain in signaling domain indicate that this frame is one and there is release channel to connect
Enter the frame of function and frame acknowledgment function, part BSSID is also carried in this frame signaling domain, it is superfluous also at least to carry circulation in signaling domain
Remaining verification sequence, this cyclic redundancy check sequence are following thrins, but must be that receiving-transmitting sides are appointed in advance：
Individually for the verification sequence in signaling domain, sequence is verified for the joint of part BSSID for signaling domain and additional information
Row, for the joint verification sequence that signaling domain and additional information are BSSID.
The website of above-mentioned frame is received, adjacent OFDM symbol in the long training sequence domain by parsing physical layer frame head
Difference, concludes that it is the signaling domain for being not used in general signaling domain to receive signaling domain, detects cyclic redundancy check sequence, if mistake,
This frame is then abandoned, if verification is correct, the frame type information domain in the signaling domain received is further parsed, concludes that this frame is
Have the function of to discharge channel access and the frame of frame acknowledgment function, such as CF-End+CF-Ack frames, if receiving station is connecing
A data frame is have sent to AP, then this receiving station will be reset certainly before one short frame interframe space before receiving this frame
Oneself NAV thinks that AP terminates the non-competing phase, oneself can enter backoff processes, and think that oneself is sent to AP
Data frame be properly received by AP.
Scene four
In 802.11ah, when network insertion pattern uses point coordination function (PCF, Point Coordination
Function) during pattern, if access point AP receives the website no data transmission of its scheduling, AP wishes to shift to an earlier date again at this time
Terminate the non-competing phase, AP has the function of the frame for discharging channel access by sending one, this frame physical layer frame head in the present embodiment
Include three domains：Short training sequence domain, long training sequence domain and signaling domain.Wherein, two adjacent in long training sequence domain
OFDM symbol has a definite phase offset to indicate to carry release channel access configured information in frame head (in this example i.e.
For frame type indication information), the frame type subdomain in signaling domain indicates that this frame is one and has the function of to discharge channel access
Frame, part BSSID is also carried in this frame signaling domain, also at least carries cyclic redundancy check sequence in signaling domain, this circulation is superfluous
Remaining verification sequence is following thrins, but must be that receiving-transmitting sides are appointed in advance：
Individually for the verification sequence in signaling domain, sequence is verified for the joint of part BSSID for signaling domain and additional information
Row, for the joint verification sequence that signaling domain and additional information are BSSID；
The website of above-mentioned frame is received, adjacent OFDM symbol in the long training sequence domain by parsing physical layer frame head
Difference, concludes that it is the signaling domain for being not used in general signaling domain to receive signaling domain, detects cyclic redundancy check sequence, if mistake,
This frame is then abandoned, if verification is correct, the frame type information domain in the signaling domain received is further parsed, concludes that this frame is
There is the frame for discharging channel access, such as CF-End frames, then this receiving station thinks the NAV for resetting oneself
AP terminates the non-competing phase, oneself can enter backoff processes.
Embodiment 2
The present embodiment introduces a kind of site apparatus, it can be achieved that the biography for the release channel access instruction that above-described embodiment 1 provides
It is defeated.The specific equipment includes at least the first module and the second module.
First module, when mainly no longer accessing the channel before the end time of the channel access of this website reservation, hair
Radio frames are sent, release channel access configured information is carried in the signaling domain of the physical layer frame head of the radio frames.Wherein, release letter
Road access configured information is frame type indication information, and frame type refers to the frame for having the function of to discharge channel access, or has and release
Put the frame of channel access function and frame acknowledgment function.Specifically, can be multiplexed in the signaling domain of the physical layer frame head of radio frames
One or more subdomains discharge channel access configured information to carry.At this point it is possible to the one or more subdomains for passing through multiplexing
Value indicates the frame type of this radio frames.But it should be recognized that this is indicated by the value of one or more subdomains
During the frame type of radio frames, the value for the subdomain being multiplexed is the value that this subdomain not yet uses.For example, multiplexing MCS subdomains with
When carrying release channel access configured information, it can determine that this radio frames is with release channel by the value of the MCS subdomains
The frame of access function still has the function of to discharge channel access and the frame of frame acknowledgment function, and requires the value of MCS subdomains at this time
For the still untapped value of MCS subdomains.It is equally possible that this radio frames is determined by the joint value of multiple subdomains
Frame type, and the value for also requiring the value of MCS subdomains not yet to be used for this subdomain in this joint value.
And above-mentioned signaling domain may also contain BSSID information, or part BSSID information, BSSID letters in part herein
Breath refers to compressed BSSID information.In addition signaling domain further includes cyclic redundancy check information, and cyclic redundancy check information is
To the check information of signaling domain information, or the joint check information to signaling domain information and additional information.Wherein additional letter
Breath is BSSID information, or part BSSID information.
Based on the implementation in above-mentioned signaling domain, the physical layer frame head for the radio frames that the first module is sent can be with
Including short training sequence domain and long training sequence domain.Wherein, long training sequence domain is by multiple Orthogonal Frequency Division Multiplexing (OFDM) symbol
Composition, may indicate that release is carried in this physical layer frame head to be believed when the phase between at least two OFDM symbols has differences
Road accesses configured information.
Second module, receive other websites transmission radio frames, when received radio frames physical layer frame head signaling
During the release channel access configured information carried in domain, the NAV of this website is reset.
Specifically, the second module can be phase in the long training sequence domain according to the physical layer frame head of received radio frames
Phase place between adjacent OFDM symbol, or it is true according to information field is retained in the signaling domain of the physical layer frame head of the radio frames
The signaling domain and non-universal signaling domain of the physical layer frame head of the fixed radio frames, then obtain the physical layer frame head of the radio frames again
Signaling domain in frame type indication information domain, determine this frame be have the function of discharge channel access frame or with release
The frame of channel access function and frame acknowledgment function.On this basis, if it is noted that this site apparatus is access point
When, the second module receive carry release channel access configured information radio frames after, will after one short frame interframe space,
The received radio frames of forwarding institute.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly
Ground, each module/unit in above-described embodiment can be realized in the form of hardware, can also use software function module
Form is realized.The application is not restricted to the combination of the hardware and software of any particular form.
From above-described embodiment as can be seen that technical scheme is while ensuring to complete release channel instruction function,
Traffic load expense is effectively reduced, reduces power consumption.In addition, the most reliable Modulation and Coding Scheme of physical layer signaling generally use,
Function instruction is positioned in physical layer signaling and is transmitted, the reliability of transmission can be improved.
The above, is only the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done, should be included in the protection of the present invention
Within the scope of.
Claims (15)
1. a kind of transmission method for discharging channel access configured information, it is characterised in that this method includes：
Transmitting station sends radio frames, and release channel access instruction letter is carried in the signaling domain of the physical layer frame head of the radio frames
Breath；The physical layer frame head of the radio frames further includes short training sequence domain, long training sequence domain, and the long training sequence domain is by more
A orthogonal frequency division multiplex OFDM symbol composition；The radio frames only include physical layer frame head；
Receiving station receives the radio frames, resets the network allocation vector NAV of this website.
2. the method as described in claim 1, it is characterised in that
The release channel access configured information is frame type indication information, and the frame type, which refers to, to be had the function of to discharge channel access
Frame type, or there is the frame type for discharging channel access and frame acknowledgment function.
3. method as claimed in claim 2, it is characterised in that
When the transmitting station sends radio frames, in the signaling domain for the physical layer frame head for being multiplexed radio frames one or more subdomains with
The release channel access configured information is carried, wherein, the value for passing through one or more subdomains being multiplexed indicates this radio frames
Frame type be the frame type for having the function of to discharge channel access, or to have the function of to discharge channel access and frame acknowledgment work(
The frame type of energy.
4. method as claimed in claim 3, it is characterised in that
When in the signaling domain of the physical layer frame head of multiplexing radio frames demodulation coding MCS subdomains to carry the release channel access
During configured information, the frame type indication information of this radio frames is indicated by MCS subdomain values, wherein, the value of MCS subdomains is still
Untapped value；
Alternatively, when in the general signaling domain of the physical layer frame head of multiplexing radio frames MCS subdomains and other subdomains to carry described release
When putting channel access configured information, the frame type of this radio frames is indicated by the joint value of MCS subdomains and other subdomains
Configured information, described to combine in value, the value of MCS subdomains is the value that this subdomain not yet uses.
5. such as Claims 1-4 any one of them method, it is characterised in that
Basic service set identifier BSSID information or part are also included in the signaling domain of the physical layer frame head of the radio frames
BSSID information, the part BSSID information refer to compressed BSSID information.
6. such as Claims 1-4 any one of them method, it is characterised in that
Cyclic redundancy check information is further included in the signaling domain of the physical layer frame head of the radio frames；
Wherein, the cyclic redundancy check information is the check information of signaling domain information, or is signaling domain information and additional letter
The joint check information of breath.
7. method as claimed in claim 6, it is characterised in that
The additional information is BSSID information, or is part BSSID information, and the part BSSID information refers to compressed
BSSID information.
8. the method as described in claim 1, it is characterised in that
When phase in the long training sequence domain between at least two OFDM symbols has differences, indicate in this physical layer frame head
Carry release channel access configured information；
After the receiving station receives the radio frames, according to OFDM in the long training sequence domain of the physical layer frame head of the radio frames
Intersymbol phase difference determines the signaling domain of the physical layer frame head of the radio frames and non-universal signaling domain, then obtains the radio frames
Physical layer frame head signaling domain in frame type indication information domain, determine this frame be have the function of discharge channel access frame or
Person has the function of to discharge channel access and the frame of frame acknowledgment function.
9. such as Claims 1-4 any one of them method, it is characterised in that this method further includes：
When the receiving station is access point, the radio frames are received, after one short frame interframe space, transmission one, which has, to be released
Put the response frame of channel access function.
10. a kind of site apparatus, it is characterised in that the equipment includes：
First module, when no longer accessing the channel before the end time of the channel access of this website reservation, sends radio frames,
Release channel access configured information is carried in the signaling domain of the physical layer frame head of the radio frames；The physical layer frame head of the radio frames
Short training sequence domain, long training sequence domain are further included, the long training sequence domain is by multiple orthogonal frequency division multiplex OFDM set of symbols
Into；The radio frames only include physical layer frame head；
Second module, receive other websites transmission radio frames, when received radio frames physical layer frame head signaling domain in
During the release channel access configured information of carrying, the network allocation vector NAV of this website is reset.
11. equipment as claimed in claim 10, it is characterised in that
The release channel access configured information is frame type indication information, and the frame type, which refers to, to be had the function of to discharge channel access
Frame, or there is the frame for discharging channel access and frame acknowledgment function.
12. equipment as claimed in claim 11, it is characterised in that
First module, one or more subdomains are to carry the release in the signaling domain for the physical layer frame head for being multiplexed radio frames
Channel access configured information, wherein, the value for passing through one or more subdomains being multiplexed indicates that the frame type of this radio frames is tool
There is the frame type of the function of release channel access, or to have the function of the frame type for discharging channel access and frame acknowledgment function.
13. equipment as claimed in claim 12, it is characterised in that
When multiplexing radio frames physical layer frame head signaling domain in MCS subdomains with carry it is described release channel access configured information
When, the frame type indication information of this radio frames is indicated by MCS subdomain values, wherein, the value of MCS subdomains is still untapped
Value；
When in the general signaling domain of the physical layer frame head of multiplexing radio frames MCS subdomains and other subdomains to carry the release channel
When accessing configured information, the frame type for indicating this radio frames by the joint value of MCS subdomains and other subdomains indicates letter
Breath, described to combine in value, the value of MCS subdomains is the value that this subdomain not yet uses.
14. equipment as claimed in claim 10, it is characterised in that
First module, by least two OFDM symbols in the long training sequence domain of the physical layer frame head of the radio frames it
Between phase difference with indicate to carry in this physical layer frame head release channel access configured information.
15. equipment as claimed in claim 10, it is characterised in that
When this site apparatus is access point, second module receives the radio frames for carrying release channel access configured information
Afterwards, after one short frame interframe space, received radio frames are forwarded.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210074578.2A CN103326838B (en) | 2012-03-20 | 2012-03-20 | A kind of transmission method and site apparatus for discharging channel access configured information |
| PCT/CN2013/072441 WO2013139213A1 (en) | 2012-03-20 | 2013-03-12 | Transmission method for release channel access indication information and station device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210074578.2A CN103326838B (en) | 2012-03-20 | 2012-03-20 | A kind of transmission method and site apparatus for discharging channel access configured information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103326838A CN103326838A (en) | 2013-09-25 |
| CN103326838B true CN103326838B (en) | 2018-05-11 |
Family
ID=49195388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210074578.2A Expired - Fee Related CN103326838B (en) | 2012-03-20 | 2012-03-20 | A kind of transmission method and site apparatus for discharging channel access configured information |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103326838B (en) |
| WO (1) | WO2013139213A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105723671B (en) | 2014-03-05 | 2019-05-03 | 华为技术有限公司 | Information transferring method, device and equipment |
| CN107113777B (en) * | 2014-12-03 | 2020-02-14 | 华为技术有限公司 | Method and equipment for indicating and determining multi-channel resources |
| CN105992327B (en) * | 2015-03-06 | 2019-05-24 | 中兴通讯股份有限公司 | A kind of method and apparatus for transmitting data |
| CN106376093B (en) * | 2015-07-24 | 2021-02-09 | 中兴通讯股份有限公司 | Transmission control method and device for avoiding data collision |
| CN106060958A (en) * | 2016-05-30 | 2016-10-26 | 珠海市魅族科技有限公司 | Wireless local area network communication method, communication device and website |
| CN105873147B (en) * | 2016-06-13 | 2019-03-22 | 珠海市魅族科技有限公司 | Communication means, communication device, access point and the website of WLAN |
| CN109150377B (en) | 2017-06-16 | 2021-01-29 | 维沃移动通信有限公司 | Information sending method, information receiving method, network side equipment and terminal equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996908A (en) * | 2005-12-31 | 2007-07-11 | 中兴通讯股份有限公司 | Method for ending time update and its state detection of occupied channels in the wireless LAN |
| CN101300788A (en) * | 2005-09-12 | 2008-11-05 | 高通股份有限公司 | Scheduling with reverse direction grant in wireless communication systems |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070153830A1 (en) * | 2006-01-05 | 2007-07-05 | Xhafa Ariton E | Methods and apparatus to provide fairness for wireless local area networks that use extended physical layer protection mechanisms |
| CN102598803B (en) * | 2009-11-03 | 2016-06-01 | 马维尔国际贸易有限公司 | Power in communication equipment is saved |
-
2012
- 2012-03-20 CN CN201210074578.2A patent/CN103326838B/en not_active Expired - Fee Related
-
2013
- 2013-03-12 WO PCT/CN2013/072441 patent/WO2013139213A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101300788A (en) * | 2005-09-12 | 2008-11-05 | 高通股份有限公司 | Scheduling with reverse direction grant in wireless communication systems |
| CN1996908A (en) * | 2005-12-31 | 2007-07-11 | 中兴通讯股份有限公司 | Method for ending time update and its state detection of occupied channels in the wireless LAN |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013139213A1 (en) | 2013-09-26 |
| CN103326838A (en) | 2013-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103326838B (en) | A kind of transmission method and site apparatus for discharging channel access configured information | |
| US9876661B2 (en) | Method and apparatus for transmitting a frame in a wireless ran system | |
| EP2548316B1 (en) | Method and apparatus for transmitting frame in wlan system | |
| US10200933B2 (en) | Method and apparatus for transmitting data in wireless LAN system | |
| EP3923508B1 (en) | Communication device, communication method, and program | |
| US10271361B2 (en) | Method and apparatus for transmitting data in wireless LAN system | |
| CN107743721A (en) | Target wakeup time (TWT) for OFDM (OFDMA) channelizing is dispatched | |
| CN106936553B (en) | Method and device for frame transmission in wireless local area network | |
| US20140133424A1 (en) | Communication apparatus, communication method, communication system, and base station | |
| CN112740813B (en) | Communication method and device | |
| CN103516461B (en) | Wireless frame processing method and system | |
| EP3242528A1 (en) | Data transmission method, acquisition method, transmission apparatus and acquisition apparatus | |
| US20140140292A1 (en) | Communication apparatus, communication method, communication system, and base station | |
| CN102387008B (en) | The method of multi-user feedback acknowledge message and the website of feeding back confirmation message | |
| CN110972287A (en) | Method, device, terminal and medium for determining HARQ process ID | |
| WO2018059250A1 (en) | Feedback information processing method, device and system, and base station and terminal | |
| EP2963972B1 (en) | Physical layer based handover method, device and system | |
| WO2017031640A1 (en) | Methods and apparatuses for determining bss to which control frame belongs and sending control frame, and device | |
| CN109076633B (en) | Transmission method, access point and station | |
| BR112020022886A2 (en) | signal sending method, signal receiving method, and device | |
| EP3226435B1 (en) | System and method for uplink transmission in a wireless network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 Termination date: 20200320 |