CN107659964A - The method to set up and device of a kind of network allocation vector - Google Patents
The method to set up and device of a kind of network allocation vector Download PDFInfo
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- CN107659964A CN107659964A CN201610602286.XA CN201610602286A CN107659964A CN 107659964 A CN107659964 A CN 107659964A CN 201610602286 A CN201610602286 A CN 201610602286A CN 107659964 A CN107659964 A CN 107659964A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 228
- 238000004891 communication Methods 0.000 claims description 19
- 230000001960 triggered effect Effects 0.000 claims description 9
- 238000013507 mapping Methods 0.000 claims description 8
- 230000002123 temporal effect Effects 0.000 claims description 8
- 238000012795 verification Methods 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 6
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- 238000011144 upstream manufacturing Methods 0.000 claims description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/021—Traffic management, e.g. flow control or congestion control in wireless networks with changing topologies, e.g. ad-hoc networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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Abstract
The invention discloses a kind of method to set up of network allocation vector and device, methods described includes：After the network equipment receives radio frames, when the transmission opportunity duration that the radio frames carry meets update condition, the network allocation vector NAV associated with wireless frame identification information attribute information is updated；Otherwise, the attribute information of the network allocation vector NAV is not updated.
Description
Technical field
The present invention relates to the method to set up and device of Radio Transmission Technology, more particularly to a kind of network allocation vector.
Background technology
In order to solve hidden node problem present in network topology, 802.11 introduce network allocation vector (NAV,
Network Allocated Vector), and then supervised by providing a kind of virtual carrier sense mechanisms to strengthen physical carrier
Listen, so as to strengthen current network transmission efficiency.More than operation realizations depend on that control frame or data frame carry when
Long (Duration) field.The network equipment receives and after unsuccessful demodulation receiving frame, compares NAV values and the new duration value that demodulates
Size, if meeting update condition (for example, current duration value is more than NAV values), the network equipment is reset using new duration
In with receiving the associated NAV values of frame identification information, otherwise, do not do to update operating.
In order to ensure the whole efficiency of intensive scene lower network, WLAN of future generation introduces more NAV imagination, i.e.,
For NAV between the services set of NAV and OBSS in local BSS services set.
In the radio frames of legacy 802.11, TXOP Duration information is included in the mac frame of wireless frame data part
In head.Therefore, receiving device must the data field portions of decoding portion or complete radio frames could obtain TXOP Duration
Value.Transmission opportunity (TXOP, Transmit Opportunity) Duration words of low temporal resolution are introduced in lead code
Duan Hou, the complexity of access device operation is reduced to a certain extent so that receiving device can be in not decoding data field
In the case of part, relatively accurate TXOP Duration values are obtained, and then complete the configuration to equipment itself NAV.However,
Be limited to it is leading in limited resources position, the bit number of TXOP Duration fields also almost halves, in the duration section of instruction
On the premise of constant, cause being decreased obviously for temporal resolution.It is seen that the duration of leading middle TXOP Duration fields
Pointing accuracy will certainly will occur compared with the transmission opportunity duration in MAC layer to decline to a great extent.Although some balance long and short duration instruction
Solution it has been proposed that for example, limited indicating range is divided into two even more than area according to different instruction granularities
Between alleviate the indication problem of duration, but larger instruction granularity can still introduce larger index error.If certain section is selected
Select the instruction granularity of 512 microseconds, then may will cause the index error for being up to 32 symbol (Symbol) durations.Usual feelings
Under condition, such result influences whether the access fairness of third party's website or targeted sites, i.e. third party's website is not because subtracting
Can not be obtained to zero NAV values channel resource or too early to zero and competitive channel resource in advance.It is leading for As-Is
In available indication bit scarcity of resources, the possibility of the leading middle TXOP Duration fields instruction digit of increase is very little.
Thus, how do not change it is leading in TXOP Duration fields instruction digit on the premise of, eliminate to property instruction as far as possible
Index error caused by granularity, strengthen the accuracy of instruction, and then the access fairness of Logistics networks equipment, be urgently to be resolved hurrily
Problem.
The content of the invention
In order to solve the above technical problems, the embodiments of the invention provide a kind of method to set up of network allocation vector and dress
Put.
The technical scheme of the embodiment of the present invention is as follows：
A kind of method to set up of network allocation vector, methods described include：
After the network equipment receives radio frames, when the transmission opportunity duration that the radio frames carry meets update condition, more
The network allocation vector NAV newly associated with wireless frame identification information attribute information；Otherwise, the network allocation vector is not updated
NAV attribute information.
In the embodiment of the present invention, when the radio frames carry first kind transmission opportunity duration and the second class transmission opportunity
It is long, wherein, the temporal resolution of first kind transmission opportunity duration is more than the resolution ratio of the second class transmission opportunity duration, and the second class
The verification of transmission opportunity duration is correct, when first kind transmission opportunity duration does not verify or place frame check makes a mistake, if first
The difference of class transmission opportunity duration and the second class transmission opportunity duration is less than appointed threshold, then a length of during first kind transmission opportunity
The transmission opportunity duration that the radio frames carry.
In the embodiment of the present invention, the network allocation vector NAV of network equipments configuration number is 1, or more than 1.
In the embodiment of the present invention, the update condition, including：
The transmission opportunity duration and the difference of the network configuration vector NAV values exceed appointed threshold.
In the embodiment of the present invention, the update condition also includes：
If the last renewal operation of the NAV values of the Wireless Communication Equipment is complete by unusual transmission opportunity duration institute
Into, then the Wireless Communication Equipment uses nonsingular transmission opportunity duration renewal NAV values in this operating process；If nothing
Method obtains nonsingular transmission opportunity duration, then abandons this renewal chance.
In the embodiment of the present invention, the update condition also includes, and the network equipment, which within a specified time continuously receives, to be come
From the radio frames of same services set, then the renewal of this NAV attribute information is abandoned, until receiving from control frame or management
Meet the transmission opportunity duration of update condition in the data frame of frame or other Basic Service Sets.
In the embodiment of the present invention, the identification information of the radio frames includes at least one of：Associated basic service
The numbering of collection, upstream or downstream mark, sender address, recipient address, radio frames send the MAC Address of equipment.
In the embodiment of the present invention, the network configuration vector NAV attribute informations include at least one of：NAV values, renewal
The list of identification information of NAV radio frames, the timestamp list for updating NAV, allow to update NAV Basic Service Set list, permit
Perhaps NAV Wireless Communication Equipment list is updated.
In the embodiment of the present invention, the difference includes：Size of the difference or ratio size or difference between the two
The size of absolute value, the either size of log-of-ratio or the size of absolute difference logarithm, or based on difference or ratio
Calculate the other modes of size.
In the embodiment of the present invention, the appointed threshold is obtained in a manner of predefined or random or other network equipments notice
；Wherein, random manner, which obtains, includes network equipment arbitrary extracting one or more element from a certain digital collection.
It is big in the quantity of the first kind transmission opportunity duration information for meeting update condition got in the embodiment of the present invention
When 1, wherein there are possibility highest transmission opportunity duration renewal NAV values in the network equipment selection.
In the embodiment of the present invention, when NAV quantity is more than 1, each set of basic is or one-to-one by many-one, or
Part is one-to-one, the many-to-one mapping relations of remainder are associated with the network allocation vector NAV.
In the embodiment of the present invention, when NAV quantity is more than 1, set Basic Service Set internal network configuration vector NAV and
Network configuration vector NAV between Basic Service Set；Network configuration vector NAV quantity is more than or equal between the Basic Service Set
One.
In the embodiment of the present invention, the unusual transmission opportunity duration value is at least greater than or equal to all different type conveyers
The maximum of meeting duration；Or after the unusual transmission opportunity duration represents the renewal of NAV values while above-mentioned duration value is carried
The special state no longer to successively decrease.
In the embodiment of the present invention, the size of the unusual transmission opportunity duration is determined in a manner of being notified or be predefined.
In the embodiment of the present invention, the unusual transmission duration is used to indicate to exceed outside transmission opportunity duration indicating range
A period of time length.
It is described to obtain nonsingular transmission opportunity duration and refer to nonsingular transmission opportunity duration not in the embodiment of the present invention
In the presence of, or check errors.
In the embodiment of the present invention, described there is possibility highest and include：The poor absolute value of transmission opportunity duration and thresholding
Minimum, the conditional probability either occurred is maximum or meets the optimal value of other object functions.
In the embodiment of the present invention, the network equipment is treating the transmission duration of selection and/or is treating the transmission duration of selection
The transmission opportunity duration for updating associated NAV values is selected in derivative；
The derivative of the transmission duration for treating selection is that the transmission duration for partly or entirely treating selection is reflected by a certain function
Penetrate the new transmission opportunity duration for treating selection of relation acquisition.
In the embodiment of the present invention, when meeting that the possibility highest transmission opportunity duration has multiple, according to setting side
Formula selects one, or random optional one, or certain functional relation based on optimal value selects one.
A kind of setting device of network allocation vector, described device include：Receiving unit, determining unit, the first renewal are single
Member and the second updating block, wherein：
Receiving unit, for receiving radio frames；
Determining unit, for determining whether the transmission opportunity duration that the radio frames carry meets update condition, when meeting
First updating block is triggered, second updating block is triggered when being unsatisfactory for；
First updating block, associated for being updated with the transmission opportunity duration for meeting update condition with wireless frame identification information
Network allocation vector NAV attribute information；
Second updating block, when being unsatisfactory for update condition for the transmission opportunity duration in the radio frames, do not update
The attribute information of the network allocation vector NAV.
In the embodiment of the present invention, when the radio frames carry first kind transmission opportunity duration and the second class transmission opportunity
It is long, wherein, the temporal resolution of first kind transmission opportunity duration is more than the resolution ratio of the second class transmission opportunity duration, and the second class
The verification of transmission opportunity duration is correct, when first kind transmission opportunity duration does not verify or place frame check makes a mistake, if first
The difference of class transmission opportunity duration and the second class transmission opportunity duration is less than appointed threshold, then a length of during first kind transmission opportunity
The transmission opportunity duration that the radio frames carry.
In the embodiment of the present invention, the number of the network allocation vector NAV is 1, or more than 1.
In the embodiment of the present invention, the update condition, including：
The transmission opportunity duration and the difference of the network configuration vector NAV values exceed appointed threshold.
In the embodiment of the present invention, if the last renewal operation of the NAV values of the Wireless Communication Equipment is by unusual biography
Defeated chance duration is completed, then the Wireless Communication Equipment uses nonsingular transmission opportunity duration more in this operating process
New NAV values；If nonsingular transmission opportunity duration can not be obtained, trigger second updating block and abandon this renewal chance.
In the embodiment of the present invention, the receiving unit is within a specified time continuously received from the wireless of same services set
Frame, then the renewal that second updating block abandons this NAV attribute information is triggered, come until the receiving unit receives
When meeting the transmission opportunity duration of update condition from the data frame of control frame or management frame or other Basic Service Sets, institute is triggered
State the transmission opportunity duration of the first updating block update condition.
In the embodiment of the present invention, the identification information of the radio frames includes at least one of：Associated basic service
The numbering of collection, upstream or downstream mark, sender address, recipient address, radio frames send the MAC Address of equipment.
In the embodiment of the present invention, the network configuration vector NAV attribute informations include at least one of：NAV values, renewal
The list of identification information of NAV radio frames, the timestamp list for updating NAV, allow to update NAV Basic Service Set list, permit
Perhaps NAV Wireless Communication Equipment list is updated.
In the embodiment of the present invention, the difference includes：Size of the difference or ratio size or difference between the two
The size of absolute value, the either size of log-of-ratio or the size of absolute difference logarithm, or based on difference or ratio
Calculate the other modes of size.
In the embodiment of the present invention, the appointed threshold is obtained in a manner of predefined or random or other network equipments notice
；Wherein, random manner, which obtains, includes network equipment arbitrary extracting one or more element from a certain digital collection.
In the embodiment of the present invention, the determining unit, it is additionally operable in the first kind for the meeting update condition transmission got
When the quantity of chance duration information is more than 1, triggers the first updating block selection and possibility highest conveyer wherein occur
Can duration renewal NAV values.
In the embodiment of the present invention, first updating block, it is additionally operable to when NAV quantity is more than 1, by many-one,
Or it is one-to-one, or part is one-to-one, the many-to-one mapping relations of remainder are associated with the network allocation vector NAV.
In the embodiment of the present invention, described device also includes：
Setting unit, for when NAV quantity is more than 1, setting Basic Service Set internal network configuration vector NAV and base
Network configuration vector NAV between this services set；Network configuration vector NAV quantity is more than or equal to one between the Basic Service Set.
In the embodiment of the present invention, the unusual transmission opportunity duration value is at least greater than or equal to all different type conveyers
The maximum of meeting duration；Or after the unusual transmission opportunity duration represents the renewal of NAV values while above-mentioned duration value is carried
The special state no longer to successively decrease.
In the embodiment of the present invention, the size of the unusual transmission opportunity duration is determined in a manner of being notified or be predefined.
In the embodiment of the present invention, the unusual transmission duration is used to indicate that the transmission opportunity duration beyond limited size indicates
A period of time length of scope.
It is described to obtain nonsingular transmission opportunity duration and refer to nonsingular transmission opportunity duration not in the embodiment of the present invention
In the presence of, or check errors.
In the embodiment of the present invention, described there is possibility highest and include：The poor absolute value of transmission opportunity duration and thresholding
Minimum, the conditional probability either occurred is maximum or meets the optimal value of other object functions.
In the embodiment of the present invention, the determining unit is treating the transmission duration of selection and/or is treating the transmission duration of selection
The transmission opportunity duration for updating associated NAV values is selected in derivative；
The derivative of the transmission duration for treating selection is that the transmission duration for partly or entirely treating selection is reflected by a certain function
Penetrate the new transmission opportunity duration for treating selection of relation acquisition.
In the embodiment of the present invention, the determining unit, it is additionally operable to meeting the possibility highest transmission opportunity duration
When having multiple, one is selected according to setting means, or it is random optional one, or the selection of certain functional relation based on optimal value
One.
In the technical scheme of the embodiment of the present invention, after the network equipment receives radio frames, the conveyer in the radio frames
A transmission opportunity duration for meeting update condition can be selected in duration, update the network allocation associated with wireless frame identification information
Vector NAV attribute information；Or the transmission opportunity duration in the radio frames does not update institute when being unsatisfactory for update condition
State network allocation vector NAV attribute information.The technical scheme of the embodiment of the present invention by setting transmission opportunity duration exactly,
On the premise of PPDU transmission reliabilities are ensured, the fairness of user's access is improved, ensure that the operational efficiency of network.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the method to set up of the network allocation vector of the embodiment of the present invention；
Fig. 2 is the schematic network structure of more OBSS environment of the embodiment of the present invention；
Fig. 3 is the schematic network structure of more BSS environment of the embodiment of the present invention；
Fig. 4 is the schematic network structure of more OBSS environment of the embodiment of the present invention；
Fig. 5 is the composition structural representation of the setting device of the network allocation vector of the embodiment of the present invention.
Embodiment
The characteristics of in order to more fully hereinafter understand the embodiment of the present invention and technology contents, below in conjunction with the accompanying drawings to this hair
The realization of bright embodiment is described in detail, appended accompanying drawing purposes of discussion only for reference, is not used for limiting the embodiment of the present invention.
Fig. 1 is the schematic flow sheet of the method to set up of the network allocation vector of the embodiment of the present invention, as shown in figure 1, this hair
The method to set up of the network allocation vector of bright embodiment comprises the following steps：
Step 101, the network equipment receives radio frames.
The technical scheme of the embodiment of the present invention is applied to WLAN protection mechanism, and the network equipment is according to the radio frames received
In relevant information carry out network allocation vector setting.
Step 102, when the transmission opportunity duration that the radio frames carry meets update condition, renewal and wireless frame identification
The network allocation vector NAV of information association attribute information.
Step 103, when the transmission opportunity duration that the radio frames carry is unsatisfactory for update condition, the network is not updated
Allocation vector NAV attribute information.
In the embodiment of the present invention, when the radio frames carry first kind transmission opportunity duration and the second class transmission opportunity
It is long, wherein, the temporal resolution of first kind transmission opportunity duration is more than the resolution ratio of the second class transmission opportunity duration, and the second class
The verification of transmission opportunity duration is correct, when first kind transmission opportunity duration does not verify or place frame check makes a mistake, if first
The difference of class transmission opportunity duration and the second class transmission opportunity duration is less than appointed threshold, then a length of during first kind transmission opportunity
The transmission opportunity duration that the radio frames carry.
In the embodiment of the present invention, the network allocation vector NAV of network equipments configuration number is 1, or more than 1.
In the embodiment of the present invention, the difference of the transmission opportunity duration and the network configuration vector NAV values, which exceeds, specifies
Thresholding then meets the update condition；Otherwise, it is unsatisfactory for update condition.
In the embodiment of the present invention, the update condition be also possible that if the NAV values of the Wireless Communication Equipment upper one
Secondary renewal operation is completed by unusual transmission opportunity duration, then the Wireless Communication Equipment uses in this operating process
Nonsingular transmission opportunity duration updates NAV values；If nonsingular transmission opportunity duration can not be obtained, this renewal machine is abandoned
Meeting.
In the embodiment of the present invention, the update condition also includes, and the network equipment, which within a specified time continuously receives, to be come
From the radio frames of same services set, then the renewal of this NAV attribute information is abandoned, until receiving from control frame or management
Meet the transmission opportunity duration of update condition in the data frame of frame or other Basic Service Sets.
In the embodiment of the present invention, aforementioned differences include：Size of the difference or ratio size or difference between the two
The size of absolute value, the either size of log-of-ratio or the size of absolute difference logarithm, or based on difference or ratio
Calculate the other modes of size.
Here, when the difference of first kind transmission opportunity duration and the second class transmission opportunity duration is different from transmission opportunity
The long difference between the residual time length of the network configuration vector NAV.
Corresponding, above-mentioned appointed threshold is obtained in a manner of predefined or random or other network equipments notice；Wherein, with
The mode of machine obtains including the network equipment arbitrary extracting one or more element from a certain digital collection.Above at two
Appointed threshold implication it is also different, simply its content for including and acquisition modes are identical.
When the quantity of the first kind transmission opportunity duration information for meeting update condition got is more than 1, the network
Wherein there are possibility highest transmission opportunity duration renewal NAV values in equipment selection.
In the embodiment of the present invention, when NAV quantity is more than 1, each set of basic passes through many-one or one-to-one or portion
Point one-to-one, the many-to-one mapping relations of remainder are associated with the network allocation vector NAV.
In the embodiment of the present invention, the unusual transmission duration is used to indicate to exceed outside transmission opportunity duration indicating range
A period of time length.
It is described to obtain nonsingular transmission opportunity duration and refer to nonsingular transmission opportunity duration not in the embodiment of the present invention
In the presence of, or check errors.
In the embodiment of the present invention, described there is possibility highest and include：The poor absolute value of transmission opportunity duration and thresholding
Minimum, the conditional probability either occurred is maximum or meets the optimal value of other object functions.
In the embodiment of the present invention, the network equipment is treating the transmission duration of selection and/or is treating the transmission duration of selection
The transmission opportunity duration for updating associated NAV values is selected in derivative；
The derivative of the transmission duration for treating selection is that the transmission duration for partly or entirely treating selection is reflected by a certain function
Penetrate the new transmission opportunity duration for treating selection of relation acquisition.
In the embodiment of the present invention, when meeting that the possibility highest transmission opportunity duration has multiple, according to setting side
Formula selects one, or random optional one, or certain functional relation based on optimal value selects one.
Below by way of specific example, the essence of technical scheme of the embodiment of the present invention is expanded on further.
Embodiment 1
As illustrated in fig. 2, it is assumed that the HE equipment in certain more OBSS environment supports double NAV mechanism, local is respectively served
NAV between NAV and the services set for serving OBSS in BSS services set.Wherein, NAV attribute information includes：NAV values, during renewal
Long maximum time granularity, updated NAV equipment or BSS lists, it is allowed to update equipment or BSS lists of the NAV etc..Certain
NAV is by the updated attribute information of radio frames from certain OBSS between the services set of third party's site STA.Wherein, last clothes
Business integrate between NAV values by maximum time granularity in SIG-A as σA(σA>XX, XX represent certain time granularity) TXOP Duration institutes
Renewal.In Frame switch next time, the STA is received again by the radio frames from OBSS, and NAV values are T between services setA, and
No longer occur in this TXOP protection duration more than Δ T (Δ T is interval of time, by time granularity, TXOP extensions or
Caused by other reasonses) TXOP durations extension (increasing or decreasing for duration).Third party's site STA by BSS Color (or
BSS-ID, or BSS Color+BSS ID, or other modes) know the senders of the radio frames.The TXOP of all acquisitions
Duration values verify correctly.
It is σ that STA, which only obtains maximum time granularity in SIG-A,B(σB>XX TXOP Duration values T)BIf TB<TA-
Δ T, then third party's site STA now selects not update the attribute information of NAV between services set；If TA-ΔT≤TB<TA, and
σB<σA, then third party's site STA now selects the attribute information of NAV between renewal services set；If TA-ΔT≤TB<TA, and σB
≥σA, then third party's site STA now selects not update the attribute information of NAV between services set；If TA<TB<TA+ Δ T, and σB
>σA, then third party's site STA now selects not update the attribute information of NAV between services set；If TA<TB<TA+ Δ T, and σB
≤σA, then third party's site STA now selects to update the NAV attribute informations between services set；If TB>TA+ Δ T, then the 3rd
Square site STA now selects the attribute information of NAV between renewal services set.
Or it is σ that STA, which only obtains maximum time granularity in SIG-A,B(σB≤ XX), TXOP Duration values TB, or
Person, STA obtain in MAC the TXOP Duration values T of (or other high time resolutions)B.If TB>TA- Δ T, then the
Tripartite's site STA now selects the attribute information of NAV between renewal services set；If TB≤TA- Δ T, then third party's site STA
Now select not update the attribute information of NAV between services set.
Similarly, after third party's website receives the radio frames from local BSS, decide whether to update according to above-mentioned replacement criteria
NAV attribute information in services set.
Embodiment 2
The basic assumption premise of the present embodiment is similar with embodiment one, the difference is that the extension of TXOP durations be present.
If TXOP durations are increased or can not judge whether that TXOP durations are reduced, follow-up processing mode can join
Examine example one.
Otherwise, if it is judged that above-mentioned reduction operation is (for example, carrying indication bit or a particular value indicate whether exist
TXOP durations are reduced) and correspondingly NAV values are more than reduced TXOP durations, then third party's website updates corresponding NAV attribute letter
Breath.
Embodiment 3
As shown in Fig. 2 the basic assumption premise of the present embodiment is similar with embodiment one, the difference is that between last services set
NAV values are σ by the maximum time granularity from mac frame head, or in SIG-AA(σA<XX TXOP Duration) are updated.
When maximum time granularity is σ in the other positions that third party's site STA only obtains SIG-A or data frameB's
TXOP Duration values TB, and σB>σAWhen：
If TB>TA+ Δ T, then NAV attribute information between third party's site STA selection renewal services set；Otherwise, the 3rd
Fang Zhandian does not update the attribute information of NAV between services set；
It is σ when third party's site STA only obtains maximum time granularity in SIG-ABTXOP Duration values TB, and σB
≤σAWhen：
If TB>TA, then NAV attribute information between third party's site STA selection renewal services set；Otherwise, third party stands
Point does not update the attribute information of NAV between services set.
Equally, above replacement criteria is also applied for the attribute information renewal of NAV in services set.
Embodiment 4
As shown in Figure 3, it is assumed that multiple single BSS be present, it is non-overlapping between each BSS but part website still can mutually receive other side
The packet of transmission.NAV attribute information includes：NAV values, update the maximum time granularity of duration, updated NAV BSS
List, it is allowed to update BSS lists of the NAV etc..
If third party's website receives non-BSS packet (judgement in packet source refers to embodiment one),
Corresponding NAV attribute information is not updated；On the contrary, then need to update the attribute information of the NAV.Wherein, specific update method
Refer to previous embodiment one and embodiment two.
Embodiment 5
As shown in Fig. 2 the basic assumption premise of the present embodiment is similar with embodiment one, unlike the within certain time
Tripartite's website can only receive the wireless data frame from same OBSS.
If during certain data frames exchange, the transmission opportunity duration T of third party's website acquisitionB, 0≤TB<ΔT’<<
TA, then NAV attribute information between third party's website selection renewal services set.Other situations and embodiment one and the class of embodiment two
Seemingly.
Embodiment 6
As shown in Fig. 2 the basic assumption premise of the present embodiment is similar with example IV, third party's website within certain time
The wireless data frame from same OBSS only can be received.
NAV replacement criteria is arranged to newest once renewal, i.e., when the decoding of third party's website obtains new conveyer
Corresponding NAV attribute information is soon updated after meeting duration, no longer does extra judgement.
Embodiment 7
Basic assumption is similar to Example 1.Make the TXOP Duration fields in SIG-A full 0 value (complete 1 value or its
His any value) represent unusual transmission duration, size Tsingurlar.The time granularity of other remaining bit maps is all mutually
Tgranularity, size is 1 μ s (or a certain duration more than 1 μ s).
After if third party's website receives the radio frames for carrying unusual transmission duration, except judging BSS color or BSS-ID
, should also be by the last renewal that associates NAV renewal list retrieval Deng that whether identification information matches with network configuration vector NAV is outer
Whether NAV values are unusual transmission opportunity duration, if it is then abandoning this NAV renewal operations.
If last NAV values are updated by unusual transmission opportunity duration, and this acquisition is nonsingular transmission opportunity
Duration, then third party's website updates above-mentioned association NAV attribute information.
Access website AP optionally (can be decided whether to send) after this TXOP terminates by AP according to actual conditions
0 to Tshort_intervalAny instant point in the period of (such as DIFS) is sent in the form of broadcasting resets frame (such as CF-
END)。
Embodiment 8
As shown in figure 4, basic assumption is similar to Example 1, HE equipment supports double NAV mechanism.
If the AP of local BSS (or OBSS) receives same BSS color radio frames and SIG-A as third party
CRC check is correct, then the AP first determines whether radio frames are descending；If descending, then updated in the case where meeting update condition
NAV attribute information between Basic Service Set.
Otherwise, the AP should decode mac frame head and judge whether itself is target device by the reception address of radio frames；If
Any NAV renewals operation is not done then；
Otherwise, if non-targeted equipment, then the AP should be judged by MAC Address (or other modes) equipment whether be
Equipment associated by this BSS；If so, the attribute information of NAV in the AP Basic Service Sets is then updated in the case where meeting update condition；
Otherwise, under meeting update condition update Basic Service Set between NAV attribute information.
If the AP can not the mac frame heads of correct decoding radio frames obtain reliable (CRC check passes through) and can not judge
The source of the radio frames, then the NAV attribute information between Basic Service Set is updated under meeting update condition.
Embodiment 9
Assuming that AP, some or all websites are HE websites in certain BSS；The finger of TXOP Duration fields in HE-SIG-A
It is 6 to show digit, and indicating range is divided into 4 instruction sections from as little as high, and the instruction granularity corresponding to each section is followed successively by
16 μ s, 32 μ s, 128 μ s, 512 μ s.Above numerical value does not form actual restriction, is served only for simplifying statement.
When AP and STA is mutually in communication with each other with physical layer convergence procedure protocol Data Unit (PPDU), such as AP sends and touched
(Trigger) frame is sent out, or STA sends uplink data frames etc. to AP.If the TXOP Duration values A in HE-SIG-A is less than
Or equal to a certain thresholding duration, then third party's website is directly using value renewal NAV values.
Otherwise, if the TXOP Duration values in HE-SIG-A are more than a certain thresholding duration, then third party's website selects
Select decoding portion data field, for example, from the initial time of data field into MAC Header TXOP Duration fields
Finish time, obtain the TXOP Duration values B in MAC layer.Afterwards, the two each selected possibility is compared：
If B>A+U or B<A-U (U is maximum instruction granularity or a certain numerical value specified), then update third party with A
The NAV values of website；Otherwise the NAV values of third party's website are updated with B.
Or both probabilities of occurrence or other functional relations are contrasted, selection meets that object function (e.g., most connects with thresholding
Closely, or probability of occurrence maximum etc.) A or B renewal third party's websites NAV values.For example, if the probability of occurrence of the two meets P
(B)>P (A), then the NAV values of third party's website are updated with B；Otherwise, using A.The rest may be inferred for other functional relations.
While updating NAV values in the present embodiment, it is also desirable to update other NAV attribute information.
Fig. 5 is the composition structural representation of the setting device of the network allocation vector of the embodiment of the present invention, as shown in figure 5,
The setting device of the network allocation vector of the embodiment of the present invention includes：Receiving unit 50, determining unit 51, the first updating block 52
With the second updating block 53, wherein：
Receiving unit 50, for receiving radio frames；
Determining unit 51, for determining whether the transmission opportunity duration that the radio frames carry meets update condition, meet
When trigger first updating block 52, second updating block 53 is triggered when being unsatisfactory for；
First updating block 52, closed for being updated with the transmission opportunity duration for meeting update condition with wireless frame identification information
The network allocation vector NAV of connection attribute information；
Second updating block 53, when being unsatisfactory for update condition for the transmission opportunity duration in the radio frames, not more
New network allocation vector NAV attribute information.
In the embodiment of the present invention, when the radio frames carry first kind transmission opportunity duration and the second class transmission opportunity
It is long, wherein, the temporal resolution of first kind transmission opportunity duration is more than the resolution ratio of the second class transmission opportunity duration, and the second class
The verification of transmission opportunity duration is correct, when first kind transmission opportunity duration does not verify or place frame check makes a mistake, if first
The difference of class transmission opportunity duration and the second class transmission opportunity duration is less than appointed threshold, then a length of during first kind transmission opportunity
The transmission opportunity duration that the radio frames carry.
In the embodiment of the present invention, the number of the network allocation vector NAV is 1, or more than 1.
It is described to meet update condition in the embodiment of the present invention, including：
The transmission opportunity duration and the difference of the network configuration vector NAV values exceed appointed threshold.
In the embodiment of the present invention, if the last renewal operation of the NAV values of the Wireless Communication Equipment is by unusual biography
Defeated chance duration is completed, then the first updating block 52 is updated in this operating process using nonsingular transmission opportunity duration
NAV values；If nonsingular transmission opportunity duration can not be obtained, trigger second updating block 53 and abandon this renewal chance.
In the embodiment of the present invention, the receiving unit 50 is within a specified time continuously received from the wireless of same services set
Frame, then the renewal that second updating block 53 abandons this NAV attribute information is triggered, until the receiving unit 50 receives
When meeting the transmission opportunity duration of update condition into the data frame from control frame or management frame or other Basic Service Sets, touch
The transmission opportunity duration for sending out the update condition of the first updating block 52 described.
In the embodiment of the present invention, the identification information of the radio frames includes at least one of：Associated basic service
The numbering of collection, upstream or downstream mark, sender address, recipient address, radio frames send the MAC Address of equipment.
In the embodiment of the present invention, the network configuration vector NAV attribute informations include at least one of：NAV values, renewal
The list of identification information of NAV radio frames, the timestamp list for updating NAV, allow to update NAV Basic Service Set list, permit
Perhaps NAV Wireless Communication Equipment list is updated.
In the embodiment of the present invention, the difference includes：Size of the difference or ratio size or difference between the two
The size of absolute value, the either size of log-of-ratio or the size of absolute difference logarithm, or based on difference or ratio
Calculate the other modes of size.
In the embodiment of the present invention, the appointed threshold is obtained in a manner of predefined or random or other network equipments notice
；Wherein, random manner, which obtains, includes network equipment arbitrary extracting one or more element from a certain digital collection.
In the embodiment of the present invention, the determining unit 51, it is additionally operable to pass in the first kind for meeting update condition got
When the quantity of defeated chance duration information is more than 1, triggers first updating block 52 and select possibility highest biography wherein occur
Defeated chance duration updates NAV values.
In the embodiment of the present invention, first updating block 52, it is additionally operable to when NAV quantity is more than 1, by multipair
One, or it is one-to-one, or part is one-to-one, the many-to-one mapping relations of remainder are associated with the network allocation vector NAV.
On the basis of the setting device of the network allocation vector shown in Fig. 5, the network allocation vector of the embodiment of the present invention
Setting device also include：
Setting unit (not shown in Fig. 5), for when NAV quantity is more than 1, setting services set internal network configuration arrow
Measure network configuration vector NAV between NAV and services set；Network configuration vector NAV quantity is more than or equal to one between the services set.
In the embodiment of the present invention, the unusual transmission opportunity duration value is at least greater than or equal to all different type conveyers
The maximum of meeting duration；Or after the unusual transmission opportunity duration represents the renewal of NAV values while above-mentioned duration value is carried
The special state no longer to successively decrease.
In the embodiment of the present invention, the size of the unusual transmission opportunity duration is determined in a manner of being notified or be predefined.
In the embodiment of the present invention, the unusual transmission duration is used to indicate that the transmission opportunity duration beyond limited size indicates
A period of time length of scope.
It is described to obtain nonsingular transmission opportunity duration and refer to nonsingular transmission opportunity duration not in the embodiment of the present invention
In the presence of, or check errors.
In the embodiment of the present invention, described there is possibility highest and include：The poor absolute value of transmission opportunity duration and thresholding
Minimum, the conditional probability either occurred is maximum or meets the optimal value of other object functions.
The determining unit 51 selects to be used in the derivative of the transmission duration for treating selection and/or the transmission duration for treating selection
The transmission opportunity duration of NAV values associated by renewal；
The derivative of the transmission duration for treating selection is that the transmission duration for partly or entirely treating selection is reflected by a certain function
Penetrate the new transmission opportunity duration for treating selection of relation acquisition.
In the embodiment of the present invention, the determining unit 51, for updating the first of network configuration vector NAV attribute informations
When class transmission opportunity duration or the second class transmission opportunity duration have multiple, one is selected according to setting means, or it is random optional
One, or the selection of certain functional relation based on optimal value one.
In the embodiment of the present invention, the determining unit 51, be additionally operable in the different types of transmission duration for treating selection and/or
Treat to select the transmission opportunity duration for updating associated NAV values in the derivative of the transmission duration of selection；
The derivative of the transmission duration for treating selection is that the transmission duration for partly or entirely treating selection is reflected by a certain function
Penetrate the new transmission opportunity duration for treating selection of relation acquisition.
It will be appreciated by those skilled in the art that the reality that each unit in device is set of the network allocation vector shown in Fig. 5
Existing function can refer to the associated description of the method to set up of aforementioned network allocation vector and understand.Network allocation vector shown in Fig. 5
Setting device in the function of each unit can be realized by running on the program on processor, can also pass through specific logic
Circuit and realize.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it can be passed through
His mode is realized.Apparatus embodiments described above are only schematical, for example, the division of the unit, is only
A kind of division of logic function, there can be other dividing mode when actually realizing, such as：Multiple units or component can combine, or
Another system is desirably integrated into, or some features can be ignored, or do not perform.In addition, shown or discussed each composition portion
Point mutual coupling or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some interfaces, equipment or unit
Or communication connection, can be electrical, mechanical or other forms.
The above-mentioned unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can positioned at a place, can also be distributed to multiple network lists
In member；Partly or entirely unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing unit, also may be used
To be each unit individually as a unit, can also two or more units it is integrated in a unit；It is above-mentioned
Integrated unit can both be realized in the form of hardware, can also be realized in the form of hardware adds SFU software functional unit.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：It is movable storage device, read-only
Memory (ROM, Read Only Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
Or if the above-mentioned integrated unit of the present invention is realized in the form of software function module and is used as independent product
Sale in use, can also be stored in a computer read/write memory medium.Based on such understanding, the present invention is implemented
The part that the technical scheme of example substantially contributes to prior art in other words can be embodied in the form of software product,
The computer software product is stored in a storage medium, including some instructions are causing a computer equipment (can be with
It is personal computer, server or network equipment etc.) perform all or part of each embodiment methods described of the present invention.
And foregoing storage medium includes：Movable storage device, read-only storage (ROM, Read Only Memory), magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (40)
1. a kind of method to set up of network allocation vector, it is characterised in that methods described includes：
The network equipment receive radio frames after, when the radio frames carry transmission opportunity duration meet update condition when, renewal with
The network allocation vector NAV of wireless frame identification information association attribute information；Otherwise, the network allocation vector NAV is not updated
Attribute information.
2. the method to set up of network allocation vector according to claim 1, it is characterised in that the radio frames carry
A kind of transmission opportunity duration and the second class transmission opportunity duration, wherein, the temporal resolution of first kind transmission opportunity duration is more than
The resolution ratio of second class transmission opportunity duration, and the verification of the second class transmission opportunity duration is correct, first kind transmission opportunity duration is not
When verification or place frame check make a mistake, if the difference of first kind transmission opportunity duration and the second class transmission opportunity duration is small
In appointed threshold, then the transmission opportunity duration that a length of radio frames carry during first kind transmission opportunity.
3. the method to set up of network allocation vector according to claim 1, it is characterised in that the network equipments configuration
Network allocation vector NAV number is 1, or more than 1.
4. the method to set up of network allocation vector according to claim 1, it is characterised in that the update condition, including：
The transmission opportunity duration and the difference of the network configuration vector NAV values exceed appointed threshold.
5. the method to set up of network allocation vector according to claim 1, it is characterised in that the update condition is also wrapped
Include：
If the last renewal operation of the NAV values of the Wireless Communication Equipment is completed by unusual transmission opportunity duration, that
The Wireless Communication Equipment uses nonsingular transmission opportunity duration renewal NAV values in this operating process；If it can not obtain
Nonsingular transmission opportunity duration is obtained, then abandons this renewal chance.
6. the method to set up of network allocation vector according to claim 1, it is characterised in that the update condition is also wrapped
Include, the network equipment within a specified time continuously receives the radio frames from same services set, then abandons this NAV attribute
The renewal of information, meet update condition until receiving in the data frame from control frame or management frame or other Basic Service Sets
Transmission opportunity duration.
7. the method to set up of network allocation vector according to claim 1, it is characterised in that the mark letter of the radio frames
Breath includes at least one of：The numbering of associated Basic Service Set, upstream or downstream mark, sender address, recipient
Address, radio frames send the MAC Address of equipment.
8. the method to set up of network allocation vector according to claim 1, it is characterised in that the network configuration vector
NAV attribute informations include at least one of：NAV values, the list of identification information of renewal NAV radio frames, the time for updating NAV
Stamp list, allow to update NAV Basic Service Set list, allow renewal NAV Wireless Communication Equipment list.
9. the method to set up of the network allocation vector according to claim 2 or 4, it is characterised in that the difference includes：Two
Size of the difference or the size of ratio size or absolute difference between person, the either size of log-of-ratio or poor
It is worth the size of absolute value logarithm, or the other modes of the calculating size based on difference or ratio.
10. the method to set up of the network allocation vector according to claim 2 or 4, it is characterised in that the appointed threshold with
Predefined or random or other network equipments notice mode obtains；Wherein, random manner, which obtains, includes the network equipment
The arbitrary extracting one or more element from a certain digital collection.
11. the method to set up of network allocation vector according to claim 2, it is characterised in that in the satisfaction got more
When the quantity of the first kind transmission opportunity duration information of New Terms is more than 1, wherein there is possibility most in the network equipment selection
High transmission opportunity duration renewal NAV values.
12. the method to set up of network allocation vector according to claim 3, it is characterised in that when NAV quantity is more than 1,
Each set of basic is or one-to-one by many-one, or part is one-to-one, the many-to-one mapping relations of remainder with it is described
Network allocation vector NAV is associated.
13. the method to set up of network allocation vector according to claim 3, it is characterised in that be more than 1 in NAV quantity
When, network configuration vector NAV between Basic Service Set internal network configuration vector NAV and Basic Service Set is set；The basic clothes
Network configuration vector NAV quantity is more than or equal to one between business collection.
14. the method to set up of network allocation vector according to claim 5, it is characterised in that the unusual transmission opportunity
Duration value is at least greater than or equal to the maximum of all different type transmission opportunity durations；Or during the unusual transmission opportunity
Grow the special state for representing no longer to successively decrease after the renewal of NAV values while above-mentioned duration value is carried.
15. the method to set up of network allocation vector according to claim 5, it is characterised in that the unusual transmission opportunity
The size of duration is determined in a manner of being notified or be predefined.
16. the method to set up of network allocation vector according to claim 5, it is characterised in that the unusual transmission duration
For a period of time length for indicating to exceed outside transmission opportunity duration indicating range.
17. the method to set up of network allocation vector according to claim 5, it is characterised in that it is described can not obtain it is non-strange
Different transmission opportunity duration refers to that nonsingular transmission opportunity duration is not present, or check errors.
18. the method to set up of network allocation vector according to claim 9, it is characterised in that described possibility occur most
Height includes：The poor absolute value of transmission opportunity duration and thresholding is minimum, and the conditional probability either occurred is maximum or meets other
The optimal value of object function.
19. the method to set up of network allocation vector according to claim 11, it is characterised in that the network equipment is being treated
The transmission duration of selection and/or treat selection transmission duration derivative in select transmission opportunity for updating associated NAV values
Duration；
The derivative of the transmission duration for treating selection is that the transmission duration for partly or entirely treating selection is closed by a certain Function Mapping
The new transmission opportunity duration for treating selection that system obtains.
20. the method to set up of network allocation vector according to claim 18, it is characterised in that meet the possibility most
When high transmission opportunity duration has multiple, one is selected according to setting means, or it is random optional one, or based on optimal value
Certain functional relation selects one.
21. the setting device of a kind of network allocation vector, it is characterised in that described device includes：Receiving unit, determining unit,
First updating block and the second updating block, wherein：
Receiving unit, for receiving radio frames；
Determining unit, for determining whether the transmission opportunity duration that the radio frames carry meets update condition, triggered when meeting
First updating block, second updating block is triggered when being unsatisfactory for；
First updating block, for updating the net associated with wireless frame identification information with the transmission opportunity duration for meeting update condition
Network allocation vector NAV attribute information；
Second updating block, when being unsatisfactory for update condition for the transmission opportunity duration in the radio frames, do not update described
Network allocation vector NAV attribute information.
22. the setting device of network allocation vector according to claim 21, it is characterised in that the radio frames carry
First kind transmission opportunity duration and the second class transmission opportunity duration, wherein, the temporal resolution of first kind transmission opportunity duration is big
In the resolution ratio of the second class transmission opportunity duration, and the verification of the second class transmission opportunity duration is correct, first kind transmission opportunity duration
Do not verify or when place frame check makes a mistake, if the difference of first kind transmission opportunity duration and the second class transmission opportunity duration
Less than appointed threshold, then the transmission opportunity duration that a length of radio frames carry during first kind transmission opportunity.
23. the setting device of network allocation vector according to claim 21, it is characterised in that the network allocation vector
NAV number is 1, or more than 1.
24. the setting device of network allocation vector according to claim 21, it is characterised in that the update condition, bag
Include：
The transmission opportunity duration and the difference of the network configuration vector NAV values exceed appointed threshold.
25. the setting device of network allocation vector according to claim 21, it is characterised in that
If the last renewal operation of the NAV values of the Wireless Communication Equipment is completed by unusual transmission opportunity duration, that
The Wireless Communication Equipment uses nonsingular transmission opportunity duration renewal NAV values in this operating process；If it can not obtain
Nonsingular transmission opportunity duration is obtained, second updating block is triggered and abandons this renewal chance.
26. the setting device of network allocation vector according to claim 21, it is characterised in that the receiving unit is referring to
The radio frames from same services set are continuously received in fixing time, then trigger the category that second updating block abandons this NAV
Property information renewal, until the receiving unit receives the data frame from control frame or management frame or other Basic Service Sets
It is middle meet update condition transmission opportunity duration when, trigger the transmission opportunity duration of the first updating block update condition.
27. the setting device of network allocation vector according to claim 21, it is characterised in that the mark of the radio frames
Information includes at least one of：The numbering of associated Basic Service Set, upstream or downstream mark, sender address, reception
Square address, radio frames send the MAC Address of equipment.
28. the setting device of network allocation vector according to claim 21, the network configuration vector NAV attribute informations
Including at least one of：NAV values, the list of identification information of radio frames for updating NAV, the timestamp list for updating NAV, permission
Update NAV Basic Service Set list, allow renewal NAV Wireless Communication Equipment list.
29. the setting device of the network allocation vector according to claim 22 or 24, it is characterised in that the difference bag
Include：Size of the difference or the size of ratio size or absolute difference between the two, or the size of log-of-ratio, or
The size of person's absolute difference logarithm, or the other modes of the calculating size based on difference or ratio.
30. the setting device of the network allocation vector according to claim 22 or 24, it is characterised in that the appointed threshold
Obtained in a manner of predefined or random or other network equipments notice；Wherein, random manner obtains and includes the network and set
The standby arbitrary extracting one or more element from a certain digital collection.
31. the setting device of network allocation vector according to claim 22, it is characterised in that the determining unit, also
For when the quantity of the first kind transmission opportunity duration information for meeting update condition got is more than 1, triggering described first
Wherein there are possibility highest transmission opportunity duration renewal NAV values in updating block selection.
32. the setting device of network allocation vector according to claim 23, it is characterised in that first renewal is single
Member, it is additionally operable to when NAV quantity is more than 1, by many-one, or it is one-to-one, or part is one-to-one, remainder is many-to-one
Mapping relations are associated with the network allocation vector NAV.
33. the setting device of network allocation vector according to claim 23, it is characterised in that described device also includes：
Setting unit, for when NAV quantity is more than 1, setting Basic Service Set internal network configuration vector NAV and basic clothes
Network configuration vector NAV between business collection；Network configuration vector NAV quantity is more than or equal to one between the Basic Service Set.
34. the setting device of network allocation vector according to claim 25, it is characterised in that the unusual transmission opportunity
Duration value is at least greater than or equal to the maximum of all different type transmission opportunity durations；Or during the unusual transmission opportunity
Grow the special state for representing no longer to successively decrease after the renewal of NAV values while above-mentioned duration value is carried.
35. the setting device of network allocation vector according to claim 25, it is characterised in that the unusual transmission opportunity
The size of duration is determined in a manner of being notified or be predefined.
36. the setting device of network allocation vector according to claim 25, it is characterised in that the unusual transmission duration
For indicating a period of time length of the transmission opportunity duration indicating range beyond limited size.
37. the setting device of network allocation vector according to claim 25, it is characterised in that it is described can not obtain it is non-strange
Different transmission opportunity duration refers to that nonsingular transmission opportunity duration is not present, or check errors.
38. the setting device of network allocation vector according to claim 29, it is characterised in that described possibility occur most
Height includes：The poor absolute value of transmission opportunity duration and thresholding is minimum, and the conditional probability either occurred is maximum or meets other
The optimal value of object function.
39. the setting device of network allocation vector according to claim 31, it is characterised in that the determining unit is being treated
The transmission duration of selection and/or treat selection transmission duration derivative in select transmission opportunity for updating associated NAV values
Duration；
The derivative of the transmission duration for treating selection is that the transmission duration for partly or entirely treating selection is closed by a certain Function Mapping
The new transmission opportunity duration for treating selection that system obtains.
40. the setting device of the network allocation vector according to claim 38, it is characterised in that the determining unit, also
For when meeting that the possibility highest transmission opportunity duration has multiple, one to be selected according to setting means, or at random
Optional one, or the selection of certain functional relation based on optimal value one.
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| CN201610602286.XA CN107659964A (en) | 2016-07-26 | 2016-07-26 | The method to set up and device of a kind of network allocation vector |
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| CN201610602286.XA CN107659964A (en) | 2016-07-26 | 2016-07-26 | The method to set up and device of a kind of network allocation vector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022538280A (en) * | 2019-07-05 | 2022-09-01 | ホアウェイ・テクノロジーズ・カンパニー・リミテッド | Communication protection method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695286A (en) * | 2011-03-24 | 2012-09-26 | 中兴通讯股份有限公司 | Method and apparatus for network allocation vector resetting |
| CN103002591A (en) * | 2011-09-15 | 2013-03-27 | 华为技术有限公司 | Nodes and NAV (network allocation vector) control method, device and system therefor |
| US20150110093A1 (en) * | 2013-10-23 | 2015-04-23 | Qualcomm Incorporated | Systems, methods and devices for dynamically setting response indication deferral in wireless networks |
| CN104756585A (en) * | 2012-10-18 | 2015-07-01 | Lg电子株式会社 | Method and apparatus for channel access in wireless LAN system |
-
2016
- 2016-07-26 CN CN201610602286.XA patent/CN107659964A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695286A (en) * | 2011-03-24 | 2012-09-26 | 中兴通讯股份有限公司 | Method and apparatus for network allocation vector resetting |
| CN103002591A (en) * | 2011-09-15 | 2013-03-27 | 华为技术有限公司 | Nodes and NAV (network allocation vector) control method, device and system therefor |
| CN104756585A (en) * | 2012-10-18 | 2015-07-01 | Lg电子株式会社 | Method and apparatus for channel access in wireless LAN system |
| US20150110093A1 (en) * | 2013-10-23 | 2015-04-23 | Qualcomm Incorporated | Systems, methods and devices for dynamically setting response indication deferral in wireless networks |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022538280A (en) * | 2019-07-05 | 2022-09-01 | ホアウェイ・テクノロジーズ・カンパニー・リミテッド | Communication protection method and device |
| JP7255950B2 (en) | 2019-07-05 | 2023-04-11 | ホアウェイ・テクノロジーズ・カンパニー・リミテッド | Communication protection method and device |
| US11665264B2 (en) | 2019-07-05 | 2023-05-30 | Huawei Technologies Co., Ltd. | Communication protection method for sensing commmunication and updating or skipping updating a NAV accordingly, and apparatus therefor |
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