CN104105215A - Data transmission method and site equipment - Google Patents
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- 101100172132 Mus musculus Eif3a gene Proteins 0.000 description 2
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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]
- H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
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Abstract
The invention discloses a data transmission method and site equipment. The method comprises the steps that a network allocation vector NAV is configured by a site according to an arrival direction of a received wireless frame and channel reservation time period information carried by the wireless frame, and wave beams are formed by the site in space beyond the range of a space angle corresponding to the NAV which is stored by the site with an effective value so that data transmission is performed; or the site pre-configures one or multiple NAVs of the corresponding preset range of the space angle, and the wave beams are formed by the site in the range of the space angle corresponding to the NAV which is stored by the site with the effective value so that data transmission is performed. A problem of space resource waste caused by the fact that auditing sites cannot perform data transmission when directional transmission and an NAV mechanism are applied via combination can be solved via the method.
Description
Technical field
The present invention relates to wireless communication field, refer to especially a kind of data transmission method for uplink and site apparatus.
Background technology
At current WLAN (wireless local area network) (WLAN, Wireless Local Area Networks) in, Yi Ge center control point (AP/PCP, Access Point/Personal basic service set (PBSS) Control Point) and multiple website (STA associated therewith, Station) formed a Basic Service Set (BSS, Basic Service Set).Control point, network Nei center and website use the conflict of carrier sense multiple access to avoid (CSMA/CA, Carrier Sense Multiple Access with Collision Avoidance) machine-processed shared channel.Wherein a large problem is exactly to hide the collision problem that website brings.For example two website A and B are outside the other side's communication coverage, mutually intercept less than, but these two websites can, with another one website C communication, just likely occur that based on CSMA/CA mechanism A and B are simultaneously to the situation of C transmission so, and this has just caused conflict.
Hide in order to solve the collision problem that website brings, IEEE tissue has proposed pseudo channel testing mechanism: in radio frames, comprise channel booking period (Duration) information, the website of auditing that receives this radio frames arranges the local network allocation vector (NAV storing according to channel booking period (Duration) information, Network Allocation Vector), carry out the indicating channel reservation end time, before the channel booking end time of NAV instruction arrives, audit website and can not send data, thereby avoid the problem of competitive channel between hiding website.After NAV is kept to zero, audits website and could send data.
In recent years, millimetre-wave attenuator development rapidly, for example, is positioned at the IEEE802.11ad standard of 60GHz, and just in research process for the IEEE802.11aj standard of Chinese 45GHz and 60GHz frequency range.Millimeter wave, at free-space propagation, is subject to the impact of Atmospheric Absorption huge, can only be applied to short-distance wireless communication, and its important application scenarios is in indoor environment.Meanwhile, because wavelength is shorter, in indoor environment, the launch loss of millimeter wave and transmission loss are very large, are mainly used in carrying out horizon communication.Based on above inherence propagation characteristic, directional transmissions is a large technical advantage of Millimeter Wave Applications, specifically adopts phase array or directional antenna etc. to realize.On this basis, once point-to-point transmission only need to utilize little space, if still adopt original NAV mechanism, will cause so the waste of space resources, as shown in Figure 1, site STA 1 and STA2 directional transmissions, the NAV of site STA 3 is set up, site STA 3 cannot be carried out transfer of data in the communication period of site STA 1 and STA2, but from the angle of directional transmissions and raising space availability ratio, between site STA 3 and STA4, can carry out directional transmissions, and the directional transmissions of the directional transmissions of STA3 and STA4 and STA1 and STA2 is not disturbed each other, so just cause the waste of space resources.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of data transmission method for uplink and site apparatus, and auditing website when solving directional transmissions and NAV mechanism in conjunction with application can not carry out the space resources waste problem that transfer of data causes.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of data transmission method for uplink, comprising:
Website is according to the arrival direction of the radio frames receiving and the channel booking period information configuration network allocation vector NAV that described radio frames is carried, space outside space angle scope corresponding to the NAV that gets effective value that website is preserved at self, forms wave beam and carries out transfer of data; Or,
One or more NAV of the pre-configured corresponding setting space angular range of website, within the scope of space angle corresponding to the NAV that gets particular value that website is preserved at self, form wave beam and carry out transfer of data.
The described NAV that gets effective value is the NAV that gets nonzero value; The described NAV that gets particular value is that value is zero NAV.
The arrival direction of the radio frames that described website basis receives and the channel booking period information configuration NAV that described radio frames is carried comprise:
The value of NAV is configured to the channel booking period information value of carrying of the radio frames of described reception;
By the arrival direction of radio frames turn clockwise the first deviation angle and be rotated counterclockwise the second deviation angle after corresponding space angle scope be configured to the space angle scope that NAV is corresponding.
The arrival direction of the radio frames that described website basis receives and the channel booking period information configuration NAV that described radio frames is carried comprise:
Whether the arrival direction space angle scope corresponding with the NAV that gets effective value of website preservation that judges the radio frames of described reception mates, if all space angle scopes corresponding to NAV of getting effective value that the arrival direction of the radio frames of described reception is preserved with website are not mated, configure new NAV; Mate with the arrival direction of the radio frames of described reception if exist in space angle scope corresponding to all NAV that get effective value that website is preserved, judge whether the value of the NAV that renewal mates.
Whether the arrival direction space angle scope corresponding with the NAV that gets effective value of website preservation that judges the radio frames of described reception mates, comprise: if space angle scope corresponding to the NAV that gets effective value that configuration site is preserved based on the arrival direction of radio frames and the arrival direction angle of the radio frames of described reception differ the threshold value that exceedes setting, be judged to be not mate; Otherwise be judged to be coupling.
The value that judges whether the NAV that upgrades coupling comprises:
The NAV of described coupling upgrades while meeting following condition: the channel booking end time of the channel booking end time of the NAV of the described coupling instruction channel booking period information instruction of carrying early than the radio frames receiving.
When one or more NAV of the pre-configured corresponding setting space angular range of described website, the method also comprises: website, according to the arrival direction of the radio frames receiving and the channel booking period information that described radio frames is carried, upgrades the value of the NAV that described setting space angular range is corresponding.
The value of upgrading the NAV that described setting space angular range is corresponding, comprising:
When arrival direction that described setting space angular range comprises the radio frames that website receives, if when the channel booking end time of the channel booking end time of NAV corresponding to the described setting space angular range instruction channel booking period information instruction of carrying early than the radio frames receiving, upgrade the value of this NAV.
While upgrading the value of NAV, the method also comprises: the value that the arrival direction of the radio frames receiving is added to NAV corresponding to space angle scope that 180 degree point to is afterwards upgraded.
While upgrading the value of NAV, the method also comprises: the space angle scope under the arrival direction of the radio frames of reception is turned clockwise after the first preset angles and/or be rotated counterclockwise the second preset angles after under the value of NAV corresponding to space angle scope upgrade.
The value of NAV after renewal is the channel booking period information value that the radio frames of reception is carried.
Between space angle scope corresponding to each NAV that website is preserved, partly overlap or not overlapping; Space angle range size corresponding to each NAV that website is preserved do not equate or not etc.
The method also comprises: before the channel booking end time of the NAV instruction of nonzero value that what website was preserved at self get reaches, the space outside the described corresponding space angle scope of NAV of getting nonzero value, forms wave beam and carry out transfer of data.
A kind of site apparatus, comprising: network allocation vector NAV configuration module and data transmission blocks, wherein:
Described NAV configuration module, the arrival direction of the radio frames receiving for basis and the channel booking period information that described radio frames is carried configuration NAV; Or, one or more NAV of pre-configured corresponding setting space angular range;
Described data transmission blocks, for the space outside space angle scope corresponding to the NAV that gets effective value in described NAV configuration module preservation, forms wave beam and carries out transfer of data; Or, within the scope of space angle corresponding to the NAV that gets particular value of described NAV configuration module preservation, form wave beam and carry out transfer of data.
The described NAV that gets effective value is the NAV that gets nonzero value; The described NAV that gets particular value is that value is zero NAV.
Described NAV configuration module, also for being configured to the channel booking period information value of carrying of the radio frames of reception the value of NAV; Also for the arrival direction of radio frames is turned clockwise the first deviation angle and be rotated counterclockwise the second deviation angle after corresponding space angle scope be configured to the space angle scope that NAV is corresponding.
Described NAV configuration module, also for judging whether the space angle scope that the arrival direction of radio frames of described reception and the NAV that gets effective value of preservation are corresponding mates, if all space angle scopes corresponding to NAV of getting effective value of the arrival direction of the radio frames of described reception and preservation are not mated, configure new NAV; Mate with the arrival direction of the radio frames of described reception if exist in space angle scope corresponding to all NAV that get effective value that website is preserved, judge whether the value of the NAV that renewal mates.
Described NAV configuration module, also for when the space angle scope corresponding to the NAV that gets effective value of the described preservation of configuration based on the arrival direction of radio frames and the arrival direction angle of the radio frames of described reception while differing the threshold value that exceedes setting, be judged to be not mate; Otherwise be judged to be coupling.
Described NAV configuration module, also upgrades for the value of the NAV to the described coupling that meets following condition: the channel booking end time of the channel booking end time of the NAV of the described coupling instruction channel booking period information instruction of carrying early than the radio frames receiving.
Described NAV configuration module, also, for according to the arrival direction of the radio frames receiving and the channel booking period information that described radio frames is carried, upgrades the value of the NAV that described setting space angular range is corresponding.
Described NAV configuration module, also when comprise the arrival direction of the radio frames that website receives when described setting space angular range, if when the channel booking end time of the channel booking end time of NAV corresponding to the described setting space angular range instruction channel booking period information instruction of carrying early than the radio frames receiving, upgrade the value of this NAV.
Described NAV configuration module, also when upgrading the value of NAV, the value that the arrival direction of the radio frames receiving is added to NAV corresponding to space angle scope that 180 degree point to is afterwards upgraded.
Described NAV configuration module, also when upgrading the value of NAV, the space angle scope under the arrival direction of the radio frames of reception is turned clockwise after the first preset angles and/or be rotated counterclockwise the second preset angles after under the value of NAV corresponding to space angle scope upgrade.
The value of NAV after renewal is the channel booking period information value that the radio frames of reception is carried.
Described data transmission blocks, before also reaching for the channel booking end time of indicating at the NAV that gets nonzero value of described preservation, the space outside space angle scope corresponding to the NAV that gets nonzero value preserving, forms wave beam and carries out transfer of data.
Data transmission method for uplink provided by the invention and site apparatus: website is according to the arrival direction of the radio frames receiving and the channel booking period information configuration network allocation vector NAV that radio frames is carried, space outside space angle scope corresponding to the NAV that gets effective value that website is preserved at self, forms wave beam and carries out transfer of data; Or one or more NAV of the pre-configured corresponding setting space angular range of website, within the scope of space angle corresponding to the NAV that gets particular value that website is preserved at self, form wave beam and carry out transfer of data.So, the space of transfer of data is divided, the space of website outside the corresponding space angle scope of the NAV that gets effective value or NAV are for example designated as, within the scope of the space angle of particular value (0) and carry out transfer of data, solve and when certainly directional transmissions and NAV mechanism are in conjunction with application, audited website and can not carry out the space resources waste problem that transfer of data causes, effectively improved space resources utilance.
Brief description of the drawings
Fig. 1 is not for interfereing with each other directional transmissions schematic diagram;
The data transmission method for uplink flow chart that Fig. 2 provides for the embodiment of the present invention;
When the NAV that Fig. 3 provides for the embodiment of the present invention one configures, four site locations are laid schematic diagrames;
When the NAV that Fig. 4 provides for the embodiment of the present invention two configures, three site locations are laid schematic diagrames;
When the NAV that Fig. 5 provides for the embodiment of the present invention three configures, three site locations are laid schematic diagrames;
When the NAV that Fig. 6 provides for the embodiment of the present invention four configures, three site locations are laid schematic diagrames;
When the NAV that Fig. 7 provides for the embodiment of the present invention five configures, three site locations are laid schematic diagrames;
The data transmitting equipment schematic diagram that Fig. 8 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
Data transmission method for uplink of the present invention as shown in Figure 2, comprising:
Step 201, website are according to the arrival direction of the radio frames receiving and the channel booking period information configuration network allocation vector NAV that radio frames is carried, space outside space angle scope corresponding to the NAV that gets effective value that website is preserved at self, forms wave beam and carries out transfer of data.
One or more NAV of step 202, the pre-configured corresponding setting space angular range of website, within the scope of space angle corresponding to the NAV that gets particular value that website is preserved at self, form wave beam and carry out transfer of data.
It is pointed out that the execution of above-mentioned steps 201 and 202 in no particular order.
Wherein, the NAV that gets effective value is the NAV that gets nonzero value; The NAV that gets particular value is that value is zero NAV.
Between the space angle scope of each NAV that website is preserved (comprise get effective value and get particular value) correspondence, partly overlap or not overlapping.Space angle range size corresponding to each NAV that website is preserved (comprise get effective value and get particular value) do not equate or not etc.
About step 201 configure the realization of NAV concrete the present invention proposes following several modes:
Mode one, which are not preserved the situation of any NAV for website:
The value of NAV arranges according to the channel booking period information of carrying of the radio frames receiving, and is designated as the channel booking end time; And, by the arrival direction of radio frames turn clockwise the first deviation angle and be rotated counterclockwise the second deviation angle after corresponding space angle scope be configured to the space angle scope that NAV is corresponding.Wherein, the first deviation angle and the second deviation angle do not equate or not etc.
Mode two, which have only been preserved the situation of the NAV that gets effective value for website:
Whether the arrival direction space angle scope corresponding with the NAV that gets effective value of website preservation that judges the radio frames receiving mates, if all space angle scopes corresponding to NAV of getting effective value that the arrival direction of the radio frames receiving is preserved with website are not mated, configure new NAV; Mate with the arrival direction of the radio frames of described reception if exist in space angle scope corresponding to all NAV that get effective value that website is preserved, judge whether the value of the NAV that renewal mates.
Whether the arrival direction space angle scope corresponding with the NAV that gets effective value of website preservation that judges the radio frames receiving mates, comprise: if space angle scope corresponding to the NAV that gets effective value that configuration site is preserved based on the arrival direction of radio frames and the arrival direction angle of the radio frames of reception differ the threshold value that exceedes setting, be judged to be not mate; Otherwise be judged to be coupling.
Wherein, judge whether that the NAV that upgrades coupling comprises: the NAV of coupling upgrades while meeting following condition: the channel booking end time of the channel booking end time of the NAV of the coupling instruction channel booking period information instruction of carrying early than the radio frames receiving.
For step 201, due to the NAV that is effective value of website preservation, while carrying out transfer of data, before the channel booking end time of the NAV instruction of getting effective value (being nonzero value) that website need to be preserved at self reaches, get space outside the corresponding space angle scope of NAV of effective value (being nonzero value) and form wave beam and carry out transfer of data at this.
About concrete as follows of the realization of step 202:
Website is divided self available space as required in advance, obtains one or more setting space angular ranges, the corresponding NAV of each setting space angular range, and the value of this NAV can be that effective value can be also particular value.
If website has received radio frames, website is according to the arrival direction of the radio frames receiving and the channel booking period information that radio frames is carried so, upgrade the value of the NAV that setting space angular range is corresponding, particularly: when arrival direction that setting space angular range comprises the radio frames that website receives, if when the channel booking end time of the channel booking end time of NAV corresponding to this setting space angular range instruction channel booking period information instruction of carrying early than the radio frames receiving, upgrade the value of this NAV (here, if the channel booking period information that radio frames is carried has indicated a channel booking end time, so, acquiescence is got particular value, be that value is that channel booking end time of zero NAV instruction is early than this channel booking end time).
For step 202, what website was preserved have the NAV that gets effective value also to have get particular value NAV or, the whole of preservation are the NAV that gets particular value, while carrying out transfer of data, before the channel booking end time of the NAV instruction of getting effective value that website need to be preserved at self reaches, get space outside the corresponding space angle scope of NAV of effective value and form wave beam and carry out transfer of data at this.The space angle scope corresponding to NAV of getting particular value can be used at any time.
In step 201 and 202, website is determined while upgrading NAV, preferably, the value that can also add NAV corresponding to space angle scope that 180 degree point to afterwards to the arrival direction of radio frames receiving is upgraded, or, the space angle scope under after first preset angles that the arrival direction of the radio frames of reception can also be turned clockwise and/or be rotated counterclockwise the second preset angles after under the value of NAV corresponding to space angle scope upgrade.Wherein, the first preset angles and the second preset angles do not equate or not etc.
NAV after renewal is the channel booking end time of the radio frames that the receives channel booking period information instruction of carrying.
Below by specific embodiment, the technical solution of the present invention is described.Follow-up the provided embodiment of the present invention is all applicable to use the wireless communication system of beam forming technique and pseudo channel testing mechanism.
Embodiment mono-
As shown in Figure 3, four site STA-a, STA-b, STA-c and STA-d, each website has been preserved multiple NAV, and the corresponding space angle scope of each NAV is that the arrival direction of the radio frames that receives according to website is determined.In this embodiment, suppose that each website of starting stage does not arrange NAV.
At a time, STA-a receives the radio frames 1 that STA-b communicates by letter with certain website, but this radio frames 1 does not send to STA-a, and STA-a itself not yet arranges NAV, therefore, STA-a need to arrange a NAV, is referred to as NAV-a1, the channel booking period information setting that value is carried according to radio frames 1, is designated as the channel booking end time.As shown in Figure 3, the space angle scope that NAV-a1 is corresponding is that b-Δ b1 is to b+ Δ b2 (span is at 0-360 degree), wherein, b is the arrival direction of this radio frames 1, and Δ b1 (the first deviation angle) and Δ b2 (the second deviation angle) can be according to concrete application settings.
After receiving the radio frames 1 that STA-b communicates by letter with certain website sometime, STA-a has received the radio frames 2 that STA-c communicates by letter with certain website, but, this radio frames 2 neither send to STA-a's, the arrival direction of supposing this radio frames 2 is c, now STA-a has only preserved an angle of getting the arrival direction b of the NAV of effective value, i.e. NAV-a1, and arrival direction c and radio frames 1 and has differed greatly that (standard that differs big or small can set in advance according to concrete application; While differing greatly, think that arrival direction c and the space angle scope corresponding to NAV-a1 of radio frames 2 do not mate), now, STA-a need to reset a NAV, be referred to as NAV-a2, the channel booking period information setting that NAV-a2 value is carried according to radio frames 2, be designated as the channel booking end time, corresponding space angle scope is that c-Δ c1 is to c+ Δ c2 (span is at 0-360 degree), Δ c1 (the first deviation angle) and Δ c2 (the second deviation angle) can be according to concrete application settings, as shown in Figure 3.
After receiving the radio frames 2 that STA-c communicates by letter with certain website sometime, STA-a receives the radio frames 3 that STA-d communicates by letter with certain website, but, this radio frames 3 neither send to STA-a's, the arrival direction of supposing this radio frames 3 is d, now STA-a buffer memory two NAV, be NAV-a1 and NAVa-2, and the arrival direction d of radio frames 3 differs greatly (not mating) with the angle b of the arrival direction of radio frames 1, that the angle of the arrival direction d of radio frames 3 and the arrival direction c of radio frames 2 differs is little (differs hour, think arrival direction d and the space angle commensurate in scope corresponding to NAVa-2 of radio frames 3), therefore, STA-a is without resetting NAV, but need to judge whether to upgrade NAV-a2 value: if the channel booking end time of radio frames 3 correspondences be later than the channel booking end time of NAV-a2 instruction, upgrade NAV-a2, the channel booking period information setting that NAV-a2 after renewal carries according to radio frames 3, be designated as the channel booking end time, otherwise do not upgrade.The space angle scope that NAV-a2 is corresponding remains unchanged (for c-Δ c1 is to c+ Δ c2) or suitably changes (change the value of Δ c1 and/or Δ c2, as kept Δ c1 value, but expand Δ c2 value).
After receiving the radio frames 3 that STA-d communicates by letter with certain website, if current time not yet arrives the channel booking end time of NAV-a1 instruction, when need to sending data, STA-a can only utilize the space outside the space angle scope that NAV-a1 is corresponding to send data, simultaneously, if current time not yet arrives the channel booking end time of NAV-a2 instruction, when need to sending data, STA-a can only utilize the space outside the space angle scope that NAV-a2 is corresponding to send data.For example, the channel booking end time of NAV-a1 instruction is 13:00, and, before 13:00, STA-a can not utilize the space angle scope that NAV-a1 is corresponding to send data; The channel booking end time of NAV-a2 instruction is that 14:00 divides, and before 14:00 divides, STA-a can not utilize the space angle scope that NAV-a2 is corresponding to send data so.
Embodiment bis-
As shown in Figure 4, three websites are respectively STA-a, STA-b and STA-c, each website sets in advance four NAV, corresponding different space angle respectively, as four of STA-a NAV are respectively NAV-a1, NAV-a2, NAV-a3 and NAV-a4, corresponding space angle scope is respectively a1, a2, a3, a4 as shown in Figure 4, and these four space angle scopes are all not overlapping as shown in Figure 4, but also can be configured to partly overlap; Four NAV of STA-b are respectively NAV-b1, NAV-b2, NAV-b3 and NAV-b4, corresponding space angle scope is respectively b1, b2, b3, b4 as shown in Figure 4, these four space angle scopes are all not overlapping as shown in Figure 4, but can be configured to partly overlap yet; Four NAV of STA-c are respectively NAV-c1, NAV-c2, NAV-c3 and NAV-c4, corresponding space angle scope is respectively c1, c2, c3, c4 as shown in Figure 4, these four space angle scopes are all not overlapping as shown in Figure 4, but can be configured to partly overlap yet; In this embodiment, the value of above-mentioned all NAV is all initialized as 0 (as required also can one or more be set to get effective value).
In this embodiment, STA-a initiates the transmission to STA-b, STA-c has received the radio frames that comprises channel booking period information that STA-a sends to STA-b in space angle scope c4 corresponding to NAV-c4, and the arrival direction of this radio frames is in space angle scope c4 corresponding to NAV-c4, the channel booking period information that STA-c comprises according to the radio frames receiving is so upgraded NAV-c4, and corresponding space angle scope c4 remains unchanged; The arrival direction that simultaneously upgrades this radio frames adds NAV-c2 corresponding to space angle scope c2 that 180 degree point to afterwards, and space angle scope c2 remains unchanged.
Channel booking period corresponding to the known STA-a of radio frames sending to STA-b according to STA-a, within this channel booking period, STA-c can not utilize space angle scope c4 and c2 to carry out transfer of data, but can utilize space angle scope c1 and c3 to carry out transfer of data.
Embodiment tri-
As shown in Figure 5, three websites are respectively STA-a, STA-b and STA-c, each website has set in advance 12 NAV, corresponding different space angle scope respectively, as 12 of STA-a NAV are respectively NAV-a1, NAV-a2, NAV-a3, NAV-a4, NAV-a5, NAV-a6, NAV-a7, NAV-a8, NAV-a9, NAV-a10, NAV-a11, NAV-a12, corresponding space angle scope is respectively a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12 as shown in Figure 5; 12 NAV of STA-b are respectively NAV-b1, NAV-b2, NAV-b3, NAV-b4, NAV-b5, NAV-b6, NAV-b7, NAV-b8, NAV-b9, NAV-b10, NAV-b11, NAV-b12, and corresponding space angle scope is respectively b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12 as shown in Figure 5; 12 NAV of STA-c are respectively NAV-c1, NAV-c2, NAV-c3, NAV-c4, NAV-c5, NAV-c6, NAV-c7, NAV-c8, NAV-c9, NAV-c10, NAV-c11, NAV-c12, and corresponding space angle scope is respectively c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12 as shown in Figure 5; In this embodiment, the value of above-mentioned all NAV is all initialized as 0 (as required also can one or more be set to get effective value).
In this embodiment, STA-a initiates the transmission to STA-b, STA-c has received the radio frames m that comprises channel booking period information that STA-a sends to STA-b in space angle scope c10 corresponding to NAV-c10, and the arrival direction of this radio frames m is in space angle scope c10 corresponding to NAV-c10, STA-c utilizes the channel booking period information that the radio frames m receiving comprises to upgrade NAV-c10 so, and corresponding space angle scope c10 remains unchanged.That the radio frames n that STA-b sends to STA-a uses is the space angle scope b10 that NAV-b10 is corresponding, cannot receive because carry out the radio frames STA-c of directional transmissions in space angle scope b10, so STA-c has only upgraded NAV-c10 in the transmission of this STA-a and STA-b.
Channel booking period corresponding to the known STA-a of radio frames m sending to STA-b according to STA-a, within this channel booking period, STA-c can not carry out transfer of data in space angle scope c10, but can utilize space angle scope corresponding to remaining 11 NAV to carry out transfer of data.
Embodiment tetra-
As shown in Figure 6, three websites are respectively STA-a, STA-b and STA-c, each website has set in advance 12 NAV, corresponding different space angle scope respectively, as 12 of STA-a NAV are respectively NAV-a1, NAV-a2, NAV-a3, NAV-a4, NAV-a5, NAV-a6, NAV-a7, NAV-a8, NAV-a9, NAV-a10, NAV-a11, NAV-a12, corresponding space angle scope is respectively a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12 as shown in Figure 6; 12 NAV of STA-b are respectively NAV-b1, NAV-b2, NAV-b3, NAV-b4, NAV-b5, NAV-b6, NAV-b7, NAV-b8, NAV-b9, NAV-b10, NAV-b11, NAV-b12, and corresponding space angle scope is respectively b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12 as shown in Figure 6; 12 NAV of STA-c are respectively NAV-c1, NAV-c2, NAV-c3, NAV-c4, NAV-c5, NAV-c6, NAV-c7, NAV-c8, NAV-c9, NAV-c10, NAV-c11, NAV-c12, and corresponding space angle scope is respectively c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12 as shown in Figure 6; In this embodiment, the value of above-mentioned all NAV is all initialized as 0 (as required also can one or more be set to get effective value).
In this embodiment, STA-a initiates the transmission to STA-b, STA-c has received the radio frames x that comprises channel booking period information that STA-a sends to STA-b in space angle scope c10 corresponding to NAV-c10, and the arrival direction of this radio frames x is in space angle scope c10 corresponding to NAV-c10, STA-c utilizes the channel booking period information that the radio frames x receiving comprises to upgrade NAV-c10 so, and corresponding space angle scope c10 remains unchanged.Same STA-c also can receive the radio frames y that STA-b sends to STA-a, and the arrival direction of this radio frames y is in space angle scope c4 corresponding to NAV-c4, so, utilize STA-c to utilize the channel booking period information that the radio frames y receiving comprises to upgrade NAV-c4, corresponding space angle scope c4 remains unchanged.
Channel booking period x corresponding to the known STA-a of radio frames x sending to STA-b according to STA-a, the channel booking period y corresponding according to the known STA-b of radio frames y, in channel booking period x, STA-c can not carry out transfer of data in space angle scope c10; In channel booking period y, STA-c can not carry out transfer of data in space angle scope c4; If channel booking period x and channel booking period y have coincidence, within the period of this coincidence, STA-c can not carry out transfer of data in space angle scope c10 and c4 so.The space angle scope that remaining 10 NAV are corresponding all can be carried out transfer of data at any time.
Embodiment five
As shown in Figure 7, three websites are respectively STA-a, STA-b and STA-c, each website has set in advance 12 NAV, corresponding different space angle scope respectively, as 12 of STA-a NAV are respectively NAV-a1, NAV-a2, NAV-a3, NAV-a4, NAV-a5, NAV-a6, NAV-a7, NAV-a8, NAV-a9, NAV-a10, NAV-a11, NAV-a12, corresponding space angle scope is respectively a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12 as shown in Figure 7; 12 NAV of STA-b are respectively NAV-b1, NAV-b2, NAV-b3, NAV-b4, NAV-b5, NAV-b6, NAV-b7, NAV-b8, NAV-b9, NAV-b10, NAV-b11, NAV-b12, and corresponding space angle scope is respectively b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12 as shown in Figure 7; 12 NAV of STA-c are respectively NAV-c1, NAV-c2, NAV-c3, NAV-c4, NAV-c5, NAV-c6, NAV-c7, NAV-c8, NAV-c9, NAV-c10, NAV-c11, NAV-c12, and corresponding space angle scope is respectively c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12 as shown in Figure 7; In this embodiment, the value of above-mentioned all NAV is all initialized as 0 (as required also can one or more be set to get effective value).
In the time receiving radio frames, if determine that the affiliated space angle scope of arrival direction of this radio frames is occupied, so, think space angle scope under the arrival direction of radio frames is turned clockwise after default angle and/or be rotated counterclockwise default angle after under space angle scope be also occupied, NAV corresponding to these occupied space angle scopes needs to be reset.
In this embodiment, STA-a initiates the transmission to STA-b, STA-c has received the radio frames i that comprises channel booking period information that STA-a sends to STA-b in space angle scope c10 corresponding to NAV-c10, the space angle scope at the arrival direction place of this radio frames i is c10, the space angle scope at place after 30 degree that turns clockwise is c9, being rotated counterclockwise the space angle scope at place after 30 degree is c11, STA-c utilizes the channel booking period information that the radio frames i receiving comprises to upgrade NAV-c9 so, NAV-c10 and NAV-c11, NAV-c9, the space angle scope that NAV-c10 and NAV-c11 are corresponding remains unchanged.Equally, STA-c receives the radio frames j that STA-b sends to STA-a in space angle scope c4 corresponding to NAV-c4, the space angle scope at the arrival direction place of this radio frames i is c4, the space angle scope at place after 30 degree that turns clockwise is c5, being rotated counterclockwise the space angle scope at place after 30 degree is c3, STA-c utilizes the channel booking period information that the radio frames j receiving comprises to upgrade NAV-c3, NAV-c4 and NAV-c5 so, and the space angle scope that NAV-c3, NAV-c4 and NAV-c5 are corresponding remains unchanged.
The radio frames i sending to STA-b according to STA-a is known at channel booking period i corresponding to STA-a, and within this period, STA-c can not carry out transfer of data in space angle scope c9, c10 and c11; The radio frames j sending to STA-a according to STA-b is known at channel booking period j corresponding to STA-b, and within this period, STA-c can not carry out transfer of data in space angle scope c3, c4 and c5; If channel booking period i and channel booking period j have coincidence, within the period of this coincidence, STA-c can not carry out transfer of data in space angle scope c3, c4, c5, c9, c10 and c11 so.The space angle scope that remaining 6 NAV are corresponding all can be carried out transfer of data at any time.
In order to realize said method, the present invention also provides a kind of site apparatus, as shown in Figure 8, comprising: NAV configuration module and data transmission blocks, wherein:
NAV configuration module, the arrival direction of the radio frames receiving for basis and the channel booking period information that radio frames is carried configuration NAV; Or, one or more NAV of pre-configured corresponding setting space angular range;
Data transmission blocks, for the space outside space angle scope corresponding to the NAV that gets effective value in the preservation of NAV configuration module, forms wave beam and carries out transfer of data; Or, within the scope of space angle corresponding to the NAV that gets particular value of NAV configuration module preservation, form wave beam and carry out transfer of data.
Preferably, the NAV that gets effective value is the NAV that gets nonzero value; The NAV that gets particular value is that value is zero NAV.
Preferably, NAV configuration module, also for being configured to the channel booking period information value of carrying of the radio frames of reception the value of NAV; Also for the arrival direction of radio frames is turned clockwise the first deviation angle and be rotated counterclockwise the second deviation angle after corresponding space angle scope be configured to the space angle scope that NAV is corresponding.
Preferably, NAV configuration module, also for judging whether the space angle scope that the arrival direction of radio frames of reception and the NAV that gets effective value of preservation are corresponding mates, if all space angle scopes corresponding to NAV of getting effective value of the arrival direction of the radio frames of described reception and preservation are not mated, configure new NAV; Mate with the arrival direction of the radio frames of described reception if exist in space angle scope corresponding to all NAV that get effective value that website is preserved, judge whether the value of the NAV that renewal mates.
Preferably, NAV configuration module, also for the space angle scope corresponding to the NAV that gets effective value of preserving when configuration based on the arrival direction of radio frames and the arrival direction angle of the radio frames of reception while differing the threshold value that exceedes setting, be judged to be not mate; Otherwise be judged to be coupling.
Preferably, NAV configuration module, also upgrades for the value of the NAV to the coupling that meets following condition: the channel booking end time of the channel booking end time of the NAV of the coupling instruction channel booking period information instruction of carrying early than the radio frames receiving.
Preferably, NAV configuration module, also, for according to the arrival direction of the radio frames receiving and the channel booking period information that radio frames is carried, upgrades the value of the NAV that setting space angular range is corresponding.
Preferably, NAV configuration module, also when comprise the arrival direction of the radio frames that website receives when setting space angular range, if when the channel booking end time of the channel booking end time of NAV corresponding to the setting space angular range instruction channel booking period information instruction of carrying early than the radio frames receiving, upgrade the value of this NAV.
Preferably, NAV configuration module, also for the value of upgrading NAV constantly, the value that the arrival direction of the radio frames receiving is added to NAV corresponding to space angle scope that 180 degree point to is afterwards upgraded.
Preferably, NAV configuration module, also for the value of upgrading NAV constantly, the space angle scope under the arrival direction of the radio frames of reception being turned clockwise after the first preset angles and/or be rotated counterclockwise the second preset angles after under the value of NAV corresponding to space angle scope upgrade.
Preferably, the value of the NAV after renewal is the channel booking end time of the radio frames that the receives channel booking period information instruction of carrying.
Preferably, data transmission blocks, before also reaching for the channel booking end time in the NAV instruction of getting nonzero value of preserving, the space outside space angle scope corresponding to the NAV that gets nonzero value preserving, forms wave beam and carries out transfer of data.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (25)
1. a data transmission method for uplink, is characterized in that, the method comprises:
Website is according to the arrival direction of the radio frames receiving and the channel booking period information configuration network allocation vector NAV that described radio frames is carried, space outside space angle scope corresponding to the NAV that gets effective value that website is preserved at self, forms wave beam and carries out transfer of data; Or,
One or more NAV of the pre-configured corresponding setting space angular range of website, within the scope of space angle corresponding to the NAV that gets particular value that website is preserved at self, form wave beam and carry out transfer of data.
2. data transmission method for uplink according to claim 1, is characterized in that,
The described NAV that gets effective value is the NAV that gets nonzero value; The described NAV that gets particular value is that value is zero NAV.
3. data transmission method for uplink according to claim 2, is characterized in that, described website comprises according to the arrival direction of the radio frames receiving and channel booking period information configuration NAV that described radio frames is carried:
The value of NAV is configured to the channel booking period information value of carrying of the radio frames of described reception;
By the arrival direction of radio frames turn clockwise the first deviation angle and be rotated counterclockwise the second deviation angle after corresponding space angle scope be configured to the space angle scope that NAV is corresponding.
4. data transmission method for uplink according to claim 2, is characterized in that, described website comprises according to the arrival direction of the radio frames receiving and channel booking period information configuration NAV that described radio frames is carried:
Whether the arrival direction space angle scope corresponding with the NAV that gets effective value of website preservation that judges the radio frames of described reception mates, if all space angle scopes corresponding to NAV of getting effective value that the arrival direction of the radio frames of described reception is preserved with website are not mated, configure new NAV; Mate with the arrival direction of the radio frames of described reception if exist in space angle scope corresponding to all NAV that get effective value that website is preserved, judge whether the value of the NAV that renewal mates.
5. data transmission method for uplink according to claim 4, it is characterized in that, whether the arrival direction space angle scope corresponding with the NAV that gets effective value of website preservation that judges the radio frames of described reception mates, comprise: if space angle scope corresponding to the NAV that gets effective value that configuration site is preserved based on the arrival direction of radio frames and the arrival direction angle of the radio frames of described reception differ the threshold value that exceedes setting, be judged to be not mate; Otherwise be judged to be coupling.
6. data transmission method for uplink according to claim 4, is characterized in that, judges whether that the value of the NAV that upgrades coupling comprises:
The NAV of described coupling upgrades while meeting following condition: the channel booking end time of the channel booking end time of the NAV of the described coupling instruction channel booking period information instruction of carrying early than the radio frames receiving.
7. data transmission method for uplink according to claim 2, it is characterized in that, when one or more NAV of the pre-configured corresponding setting space angular range of described website, the method also comprises: website, according to the arrival direction of the radio frames receiving and the channel booking period information that described radio frames is carried, upgrades the value of the NAV that described setting space angular range is corresponding.
8. data transmission method for uplink according to claim 7, is characterized in that, upgrades the value of the NAV that described setting space angular range is corresponding, comprising:
When arrival direction that described setting space angular range comprises the radio frames that website receives, if when the channel booking end time of the channel booking end time of NAV corresponding to the described setting space angular range instruction channel booking period information instruction of carrying early than the radio frames receiving, upgrade the value of this NAV.
9. according to data transmission method for uplink described in claim 6 or 7, it is characterized in that, while upgrading the value of NAV, the method also comprises: the value that the arrival direction of the radio frames receiving is added to NAV corresponding to space angle scope that 180 degree point to is afterwards upgraded.
10. according to data transmission method for uplink described in claim 6 or 7, it is characterized in that, while upgrading the value of NAV, the method also comprises: the space angle scope under the arrival direction of the radio frames of reception is turned clockwise after the first preset angles and/or be rotated counterclockwise the second preset angles after under the value of NAV corresponding to space angle scope upgrade.
11. according to data transmission method for uplink described in claim 6 or 7, it is characterized in that, the value of the NAV after renewal is the channel booking period information value that the radio frames of reception is carried.
12. data transmission method for uplink according to claim 2, is characterized in that, partly overlap or not overlapping between space angle scope corresponding to each NAV that website is preserved; Space angle range size corresponding to each NAV that website is preserved do not equate or not etc.
13. data transmission method for uplink according to claim 2, it is characterized in that, the method also comprises: before the channel booking end time of the NAV instruction of nonzero value that what website was preserved at self get reaches, space outside the described corresponding space angle scope of NAV of getting nonzero value, forms wave beam and carries out transfer of data.
14. 1 kinds of site apparatus, is characterized in that, comprising: network allocation vector NAV configuration module and data transmission blocks, wherein:
Described NAV configuration module, the arrival direction of the radio frames receiving for basis and the channel booking period information that described radio frames is carried configuration NAV; Or, one or more NAV of pre-configured corresponding setting space angular range;
Described data transmission blocks, for the space outside space angle scope corresponding to the NAV that gets effective value in described NAV configuration module preservation, forms wave beam and carries out transfer of data; Or, within the scope of space angle corresponding to the NAV that gets particular value of described NAV configuration module preservation, form wave beam and carry out transfer of data.
15. according to site apparatus described in claim 14, it is characterized in that,
The described NAV that gets effective value is the NAV that gets nonzero value; The described NAV that gets particular value is that value is zero NAV.
16. according to site apparatus described in claim 15, it is characterized in that,
Described NAV configuration module, also for being configured to the channel booking period information value of carrying of the radio frames of reception the value of NAV; Also for the arrival direction of radio frames is turned clockwise the first deviation angle and be rotated counterclockwise the second deviation angle after corresponding space angle scope be configured to the space angle scope that NAV is corresponding.
17. according to site apparatus described in claim 15, it is characterized in that,
Described NAV configuration module, also for judging whether the space angle scope that the arrival direction of radio frames of described reception and the NAV that gets effective value of preservation are corresponding mates, if all space angle scopes corresponding to NAV of getting effective value of the arrival direction of the radio frames of described reception and preservation are not mated, configure new NAV; Mate with the arrival direction of the radio frames of described reception if exist in space angle scope corresponding to all NAV that get effective value that website is preserved, judge whether the value of the NAV that renewal mates.
18. according to site apparatus described in claim 17, it is characterized in that,
Described NAV configuration module, also for when the space angle scope corresponding to the NAV that gets effective value of the described preservation of configuration based on the arrival direction of radio frames and the arrival direction angle of the radio frames of described reception while differing the threshold value that exceedes setting, be judged to be not mate; Otherwise be judged to be coupling.
19. according to site apparatus described in claim 17, it is characterized in that,
Described NAV configuration module, also upgrades for the value of the NAV to the described coupling that meets following condition: the channel booking end time of the channel booking end time of the NAV of the described coupling instruction channel booking period information instruction of carrying early than the radio frames receiving.
20. according to site apparatus described in claim 15, it is characterized in that,
Described NAV configuration module, also, for according to the arrival direction of the radio frames receiving and the channel booking period information that described radio frames is carried, upgrades the value of the NAV that described setting space angular range is corresponding.
21. according to site apparatus described in claim 20, it is characterized in that,
Described NAV configuration module, also when comprise the arrival direction of the radio frames that website receives when described setting space angular range, if when the channel booking end time of the channel booking end time of NAV corresponding to the described setting space angular range instruction channel booking period information instruction of carrying early than the radio frames receiving, upgrade the value of this NAV.
22. according to site apparatus described in claim 19 or 20, it is characterized in that,
Described NAV configuration module, also when upgrading the value of NAV, the value that the arrival direction of the radio frames receiving is added to NAV corresponding to space angle scope that 180 degree point to is afterwards upgraded.
23. according to site apparatus described in claim 19 or 20, it is characterized in that,
Described NAV configuration module, also when upgrading the value of NAV, the space angle scope under the arrival direction of the radio frames of reception is turned clockwise after the first preset angles and/or be rotated counterclockwise the second preset angles after under the value of NAV corresponding to space angle scope upgrade.
24. according to site apparatus described in claim 19 or 20, it is characterized in that, the value of the NAV after renewal is the channel booking period information value that the radio frames of reception is carried.
25. according to site apparatus described in claim 15, it is characterized in that,
Described data transmission blocks, before also reaching for the channel booking end time of indicating at the NAV that gets nonzero value of described preservation, the space outside space angle scope corresponding to the NAV that gets nonzero value preserving, forms wave beam and carries out transfer of data.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310113620.1A CN104105215A (en) | 2013-04-02 | 2013-04-02 | Data transmission method and site equipment |
| PCT/CN2014/074679 WO2014161496A1 (en) | 2013-04-02 | 2014-04-02 | Data transmission method, station device and computer readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310113620.1A CN104105215A (en) | 2013-04-02 | 2013-04-02 | Data transmission method and site equipment |
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| CN105578423A (en) * | 2014-10-24 | 2016-05-11 | 中兴通讯股份有限公司 | Wireless local area network station resource sharing method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10362586B2 (en) * | 2015-10-13 | 2019-07-23 | Futurewei Technologies, Inc. | System and method for spatial reuse in directional random access |
| CN108811120B (en) * | 2017-05-05 | 2023-05-02 | 中兴通讯股份有限公司 | Data transmission method and device |
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| 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 |
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