CN103096439A - Station scheduling method, data transmission method, access control station and station - Google Patents
Station scheduling method, data transmission method, access control station and station Download PDFInfo
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- CN103096439A CN103096439A CN2011103483382A CN201110348338A CN103096439A CN 103096439 A CN103096439 A CN 103096439A CN 2011103483382 A CN2011103483382 A CN 2011103483382A CN 201110348338 A CN201110348338 A CN 201110348338A CN 103096439 A CN103096439 A CN 103096439A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a station scheduling method, a data transmission method, an access control station and stations. The method includes that the access control station sends one or a plurality of kinds of grouping indication information, transmission duration time and source mapping information to one or a plurality of stations, and transmission chances are distributed by the stations. On the condition that a plurality of stations conduct data report at regular intervals, appropriate transmission chances are distributed for each station at regular intervals, and therefore the fact that a plurality of users contend information channels to enable information channel access impact probability to be improved is avoided. Meanwhile, the fact that each station keeps a dormancy state when each station does not need to be accessed into the information channels is guaranteed, and using efficiency and electricity-saving performance of wireless sources are improved.
Description
Technical field
The present invention relates to the wireless communication technique field, relate in particular to a kind of dispatching method, data transmission method, access control website and website of website.
Background technology
At present, in field of wireless, WLAN (wireless local area network) (WLAN) fast development, growing to the application demand of WLAN.In Institute of Electrical and Electric Engineers industrial specification IEEE802.11 group, successively defined 802.11a, 802.11b and the WLAN technology of the series of standards such as 802.11g, other task groups occur successively again subsequently, be devoted to develop the standard that relates to existing 802.11 technological improvements, for example, 802.11ah task groups is utilized mainly for the resource of exempting from licensed band below the 1GHz frequency range, be used for supporting intelligent grid, sensor network, the new network applications such as Cellular Networks load balancing.
802.11 in, access point or access control website (access point is called for short AP) and a plurality of websites (Station is called for short STA) that are associated with AP have formed a Basic Service Set (basic service set is called for short BSS).802.11 the most basic operator scheme is to utilize the Carrier Sense Multiple Access mechanism CSMA/CA (CSMA with Collision Avoidance) that avoids with conflict to make a plurality of websites by the competition sharing wireless channel.EDCA is the enhanced kind of operation pattern, utilizes CSMA/CA mechanism, makes a plurality of different priorities formations by the competition sharing wireless channel, and preengages a transmission opportunity (Transmission Opportunity is called for short TXOP).
802.11ah in the new WLAN application scenarios of task groups definition, have a lot of requirement support large user numbers to transmit, for example intelligent grid is checked meter, remote-control romote-sensing, public safety, the typical use-case such as medical monitoring.And require can support at most under a BSS 6000 websites under the intelligent grid scene, and system need to carry out regular or irregular data to large quantity website and reports.Website under these are used requires need not change battery for a long time generally by powered battery usually, and therefore its requirement to power saving of website in relatively traditional wlan system is very high.If adopt the channel access mode of traditional CSMA/CA, large quantity website need to continue monitor channel, obtains channel by competitive way and will cause a large amount of collisions, thereby reduced efficient, and be unfavorable for the economize on electricity of website.
802.11 support the energy-saving mode operation.Site works is in enable mode (Active pattern) under normal circumstances, if the energy-saving mode of entering (Power Save pattern), alternation is in two states: waking state (Awake state) namely works on power; Resting state (Doze state) is not is not namely received and dispatched operation.
Multi-site poll energy-saving mode of the prior art (Power Save Multi Poll, be called for short PSMP) operation, can receive and send for the cycle the certain up and downlink resource of website distribution of small data packets, in order to keep unactivated state when it does not receive and sends data, thereby carry out power saving.Can be a plurality of website scheduling resources of associated by sending PSMP radio frames access control website, thereby further improve channel utilization and economized power.
Yet the application scenarios for intelligent grid, because website quantity is many, mostly be uplink service and traffic performance extremely similar, multi-site poll energy-saving mode of the prior art needs to be optimized, adapting to the characteristics of new application scenarios, thereby further improve channel utilization and economize power.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of dispatching method, data transmission method, access control website and website of website, can put in the quantity situation at major station and realize uplink traffic transmission, can improve channel utilization, and strengthen the power saving capability of website.
For solving the problems of the technologies described above, the dispatching method of a kind of website of the present invention comprises:
The access control website sends one or more in grouping indication information, transmitting continuous temporal information and resource mapping information to one or more websites, is that described website distributes transmission opportunity.
Further, described grouping indication information comprises: the group identifying information and/or, station recognition offset information and station recognition number total information is indicated the scope of the website be assigned with transmission opportunity.
Further, when comprising described group of identifying information not comprising station recognition offset information and station recognition number total information in described grouping indication information, the described scope that is assigned with the website of transmission opportunity is the whole websites in the grouping pointed to of described group of identifying information; Perhaps,
When comprising described station recognition offset information and station recognition number total information not comprising described group of identifying information in described grouping indication information, the described scope that is assigned with the website of transmission opportunity is the website definite with station recognition number total information according to the station recognition offset information; Perhaps,
When comprising group identifying information, station recognition offset information and station recognition number total information in described grouping indication information, the described scope that is assigned with the website of transmission opportunity is in the grouping pointed to of described group of identifying information, the website definite with station recognition number total information according to the station recognition offset information.
Further, the front n (n 〉=1) of the related identifier that described group of identifying information is website position comprises the identical website in front n position of related identifier in the grouping that described group of identifying information points to.
Further, also comprise:
When described access control website did not send described grouping indication information to described one or more websites, the Basic Service Set at described access control website place used predefined grouping indication information.
Further, described transmitting continuous temporal information comprises: transmission opportunity start offset information and/or transmission opportunity unit duration information, the original position of the first transmission opportunity of described transmission opportunity start offset information indication, the unit duration of described transmission opportunity unit duration information indication transmission opportunity.
Further, when comprising described transmission opportunity start offset information not comprising transmission opportunity unit duration information in described transmitting continuous temporal information, described website adopts predefined transmission opportunity unit duration; Perhaps,
When comprising described transmission opportunity unit duration information not comprising described transmission opportunity start offset information in described transmitting continuous temporal information, described website adopts time predefined interval after the radio frames of the described transmission opportunity unit duration information of carrying as described transmission opportunity start offset information.
Further, also comprise:
When described access control website did not send described transmitting continuous temporal information to described one or more websites, the Basic Service Set at described access control website place adopted predefined transmitting continuous temporal information.
Further, described resource mapping information indicates whether to distribute transmission opportunity for the website of described grouping indication information indication.
Further, described resource mapping information adopts the resource mapping bit diagram, one or more bits in described resource mapping bit diagram are corresponding described is assigned with a website in the scope of website of transmission opportunity, indicates whether to distribute for the website of correspondence the quantity of the shared unit duration of transmission opportunity of transmission opportunity and distribution.
Further, when described access control website did not send described resource mapping information to described one or more websites, the Basic Service Set at described access control website place adopted predefined resource mapping information.
Further, a kind of data transmission method comprises:
Website receives the radio frames that the access control website sends, check whether be included as the indication information that website distributes transmission opportunity in described radio frames, described indication information for website distribution transmission opportunity comprises one or more in grouping indication information, transmitting continuous temporal information and resource mapping information;
Described website comprises described when distributing the indication information of transmission opportunity for website in described radio frames, according to described original position and the duration of distributing the indication information calculating transmission opportunity of transmission opportunity for website, and carry out radio frame transmission in the transmission opportunity of distributing for this website.
Further, according to described original position and the duration of distributing the indication information calculating transmission opportunity of transmission opportunity for website, comprising:
Whether described website is that this website distributes transmission opportunity according to grouping indication information and resource mapping validation of information access control website, distribute transmission opportunity if confirm as this website, be calculated as original position and the duration of the transmission opportunity of this website distribution according to transmitting continuous temporal information.
Further, also comprise:
Described website is receiving the grouping indication information when not receiving resource mapping information, confirm according to predefined resource mapping information and the grouping indication information that receives whether the access control website is that this website distributes transmission opportunity, distribute transmission opportunity if confirm as this website, calculate original position and the duration of transmission opportunity according to transmitting continuous temporal information; Perhaps,
Described website does not receive grouping during indication information receiving resource mapping information, whether be that this website distributes transmission opportunity according to predefined grouping indication information with the resource mapping validation of information access control website that receives, distribute transmission opportunity if confirm as this website, calculate original position and the duration of transmission opportunity according to transmitting continuous temporal information.
Further, also comprise:
Described website adopts time predefined interval after radio frames as described transmission opportunity start offset information, and adopts predefined transmission opportunity unit duration when not receiving transmitting continuous temporal information; Perhaps,
Described website is receiving transmitting continuous temporal information, and when comprising transmission opportunity unit duration information in transmitting continuous temporal information and not comprising transmission opportunity start offset information, adopt time predefined interval after radio frames as described transmission opportunity start offset information; Perhaps,
Described website is receiving transmitting continuous temporal information, and when comprising transmission opportunity start offset information in transmitting continuous temporal information and not comprising transmission opportunity unit duration information, adopts predefined transmission opportunity unit duration.
Further, described website carries out radio frame transmission in the transmission opportunity of distributing for this website, comprising:
Described website sends radio frames to described access control website in the transmission opportunity of distributing for this website, and the acknowledgement frame of reception access control website, if do not receive the confirmation frame, retransmit in described transmission opportunity, after receiving the end of described acknowledgement frame or described transmission opportunity, described website enters resting state.
Further, described website carries out radio frame transmission in the transmission opportunity of distributing for this website, comprising:
Described website sends radio frames to described access control website in the transmission opportunity of distributing for this website, after being sent or after transmission opportunity finishes, enter resting state;
Described website is after the transmission opportunity total duration finishes, enter waking state, receive the confirmation bit diagram that described access control website sends, wherein, the transmission opportunity total duration refers to the transmission opportunity duration sum of the website that all are assigned with transmission opportunity.
Further, also comprise:
When described acknowledgement bit figure indicated described access control website to receive the radio frames of described website transmission, described website entered resting state;
When described acknowledgement bit figure indicated described access control website not receive the radio frames of described website transmission, described website kept waking state, waited for that described access control website distributes transmission opportunity to retransmit.
Further, a kind of access control website comprises: transmission opportunity allocation units and information transmitting unit, wherein:
Described transmission opportunity allocation units, be used to website to distribute transmission opportunity, be generated as the indication information that website distributes transmission opportunity, described indication information for website distribution transmission opportunity comprises one or more in grouping indication information, transmitting continuous temporal information and resource mapping information;
Described information transmitting unit is used for sending to one or more websites with described for website distributes the indication information of transmission opportunity.
Further, described grouping indication information comprises: the group identifying information and/or, station recognition offset information and station recognition number total information is indicated the scope of the website be assigned with transmission opportunity.
Further, described transmitting continuous temporal information comprises: transmission opportunity start offset information and/or transmission opportunity unit duration information, the original position of the first transmission opportunity of described transmission opportunity start offset information indication, the unit duration of described transmission opportunity unit duration information indication transmission opportunity.
Further, described resource mapping information indicates whether to distribute transmission opportunity for the website in the scope of the described website that is assigned with transmission opportunity.
Further, a kind of website comprises: information receiving unit, transmission opportunity determining unit and radio frame transmission unit, wherein:
Described information receiving unit, be used for receiving the radio frames that the access control website sends, check whether be included as the indication information that website distributes transmission opportunity in described radio frames, described indication information for website distribution transmission opportunity comprises one or more in grouping indication information, transmitting continuous temporal information and resource mapping information;
Described transmission opportunity determining unit is used for when described radio frames is included as the indication information of website distribution transmission opportunity, according to described original position and the duration of distributing the indication information calculating transmission opportunity of transmission opportunity for website;
Described radio frame transmission unit is used for carrying out radio frame transmission in the transmission opportunity of distributing.
Further, described transmission opportunity determining unit, whether specifically be used for according to grouping indication information and resource mapping validation of information access control website is that this website distributes transmission opportunity, distribute transmission opportunity if confirm as this website, according to original position and the duration of transmitting continuous temporal information acquisition for the transmission opportunity of this website distribution.
Further, described radio frame transmission unit, concrete being used for sends radio frames to described access control website in the transmission opportunity of distributing for this website, and the acknowledgement frame of reception access control website, if do not receive the confirmation frame, retransmit in described transmission opportunity, after receiving the end of described acknowledgement frame or described transmission opportunity, described website enters resting state.
Further, described radio frame transmission unit, concrete being used for sends radio frames to described access control website in the transmission opportunity of distributing for this website, after being sent or after the transmission opportunity end, enter resting state; After the transmission opportunity total duration finishes, enter waking state, receive the confirmation bit diagram that described access control website sends, wherein, the transmission opportunity total duration refers to total transmission opportunity duration that all distribute the website of transmission opportunity.
In sum, the present invention regularly carries out data at large quantity website and reports in situation, by being the suitable transmission opportunity of each website periodic allocation, thereby avoided because the large user counts the channel access collision probability raising that competitive channel causes, guarantee that simultaneously each website keeps resting state when not needing to access channel, improve the utilization ratio of Radio Resource and economize power.
Description of drawings
Fig. 1 is the schematic diagram of the embodiment of the present invention 1;
Fig. 2 is the schematic diagram that in the embodiment of the present invention, the first access control website returns to acknowledgement frame;
Fig. 3 is the schematic diagram that the embodiment of the present invention 2 the second access control point are returned to acknowledgement frame;
Fig. 4 is the schematic diagram of the embodiment of the present invention 3;
Fig. 5 is the schematic diagram of the embodiment of the present invention 5;
Fig. 6～Fig. 7 is the schematic diagram of the embodiment of the present invention 6;
Fig. 8 is the Organization Chart of the access control website of embodiment of the present invention;
Fig. 9 is the Organization Chart of the website of embodiment of the present invention.
Embodiment
The dispatching method of the website of present embodiment comprises:
The access control website sends radio frames to one or more websites, carries one or more in grouping indication information, transmitting continuous temporal information and resource mapping information, is that each website distributes an identical transmission opportunity of duration.
The grouping indication information comprises following one or more information, the group identifying information and/or, station recognition offset information and station recognition number total information, indication is assigned with the scope of website of transmission opportunity.
The grouping indication information can comprise the group identifying information and not comprise station recognition offset information and station recognition number total information, and the scope that is assigned with the website of transmission opportunity is the whole websites in the grouping of group identifying information sensing.The group identifying information is front n (n 〉=1) position of the related identifier of website, comprises the identical website in front n position of related identifier in the grouping that the group identifying information points to.
The grouping indication information can also comprise the station recognition offset information and station recognition number total information does not comprise the group identifying information, and the scope that is assigned with the website of transmission opportunity is the website definite with station recognition number total information according to the station recognition offset information.
Related identifier (the Association ID of website, be called for short AID) begin to be numbered from " 0 ", the station recognition offset information is to be 0 skew with respect to AID, for example, the station recognition offset information is 50, station recognition number total information is 40, and indicated AID interval is from 50 to 89.
The grouping indication information can also comprise group identifying information, station recognition offset information and station recognition number total information, be assigned with in the grouping that the scope of the website of transmission opportunity points to for the group identifying information website definite with station recognition number total information according to the station recognition offset information.
The grouping indication information can comprise the indication information of one or more groupings.When the access control website did not send the grouping indication information to website, the website that the basic service at access control website place is concentrated used predefined grouping indication information.
Transmitting continuous temporal information comprises following one or more information, transmission opportunity start offset information and/or transmission opportunity unit duration information.
The original position of the first transmission opportunity of transmission opportunity start offset information indication.
The unit duration of transmission opportunity unit duration information indication transmission opportunity.A website can distribute one or more transmission opportunity unit durations.
Transmitting continuous temporal information can comprise transmission opportunity start offset information and not comprise transmission opportunity unit duration information, website adopts predefined transmission opportunity unit duration, wherein, predefined transmission opportunity unit duration refers to transmission opportunity unit duration Basic Service Set acquiescence or that website has been known.
Transmitting continuous temporal information can also comprise transmission opportunity unit duration information and not comprise transmission opportunity start offset information, time predefined interval after website adopts radio frames to finish is as transmission opportunity start offset information, wherein, the time predefined interval refers to time interval information Basic Service Set acquiescence or that website has been known.
When the access control website did not send transmitting continuous temporal information to one or more websites, the website that the basic service of access control website is concentrated adopted predefined transmitting continuous temporal information.
Resource mapping information indicates whether to distribute transmission opportunity for the website in the scope of the website that is assigned with transmission opportunity.
Resource mapping information can adopt the resource mapping bit diagram, the corresponding website of the one or more bits in the resource mapping bit diagram, and whether expression is the quantity that corresponding website has distributed the shared unit duration of transmission opportunity of transmission opportunity and distribution.
When the access control website did not send resource mapping information to one or more websites, the website that the basic service at access control website place is concentrated adopted predefined resource mapping information.
The data transmission method of present embodiment comprises:
Website receives the radio frames that the access control website sends, check whether to be included as the indication information that website distributes transmission opportunity in radio frames, comprise one or more in grouping indication information, transmitting continuous temporal information and resource mapping information for website distributes the indication information of transmission opportunity;
When website is included as the indication information of website distribution transmission opportunity in radio frames, according to original position and the duration of the indication information calculating transmission opportunity of distributing transmission opportunity for website, and carry out radio frame transmission in the transmission opportunity of distributing for this website.
Whether website is that this website distributes transmission opportunity according to grouping indication information and resource mapping validation of information access control website, if described access control website distributes transmission opportunity for this website, according to the transmission opportunity start offset information in transmitting continuous temporal information and/or transmission opportunity unit duration information, obtain zero-time and the Duration Information of actual transmission opportunity.
Website is receiving the grouping indication information when not receiving resource mapping information, according to original position and the duration of predefined resource mapping information with the grouping indication information calculating transmission opportunity that receives, wherein, described predefined resource mapping information refers to resource mapping information basic service set acquiescence or that website has been known.
Website does not receive grouping during indication information receiving resource mapping information, according to original position and the duration of predefined grouping indication information with the resource mapping information calculating transmission opportunity that receives, wherein, predefined grouping indication information refers to grouping indication information basic service set acquiescence or that website has been known.
Website adopts time predefined interval after radio frames as described transmission opportunity start offset information, and adopts the predefined transmission opportunity duration when not receiving transmitting continuous temporal information.
Website is receiving transmitting continuous temporal information, and only comprises transmission opportunity in transmitting continuous temporal information during the duration, adopts time predefined interval after radio frames as described transmission opportunity start offset information.
Website is receiving transmitting continuous temporal information, and when only comprising transmission opportunity start offset information in transmitting continuous temporal information, adopts the predefined transmission opportunity duration.
Website is in battery saving mode, and the access control website sends radio frames to website during the monitoring of website.
After website receives radio frames, carry out radio frame transmission in the transmission opportunity of distributing.
Wherein, website carries out radio frame transmission in the transmission opportunity of distributing, and can be website sends radio frames and receive the acknowledgement frame of access control website to the access control website, can be also that website only sends radio frames to the access control website.
If website sends radio frames and receives the acknowledgement frame of access control website to the access control website in the transmission opportunity of distributing, if website is not received when confirming, retransmit in the transmission opportunity of distributing, after receiving the confirmation the end of frame or transmission opportunity, website enters resting state.
If website only sends radio frames to the access control website in the transmission opportunity of distributing, be sent or after the transmission opportunity of distributing finished, website entered dormancy in radio frames.
The access control website is after the transmission opportunity total duration finishes, and unification sends the radio frames of carrying acknowledgement bit figure to website, and wherein, each bit in acknowledgement bit figure is indicated confirmation for the website that obtains transmission opportunity.The transmission opportunity total duration refers to the transmission opportunity duration sum of the website that all are assigned with transmission opportunity.
Website is waken up after all distribute the transmission opportunity total duration of the website of transmission opportunity to finish, receive the radio frames of the confirmation bit diagram of access control website transmission, if acknowledgement bit figure indicates the access control website to receive the radio frames of website, website enters dormancy; If acknowledgement bit figure indicates the access control website not receive the radio frames of website, website keeps waking state, waits for that the distribution of next transmission opportunity retransmits.
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.In the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
Embodiment 1:
When website carried out network insertion and related authentication in a BSS, access point AP was the related identifier (Association ID is called for short AID) that website distributes 16 bit long, in order to carry out user's identification in BSS.In present embodiment with the front n (n 〉=1) of the related identifier position group identifying information as website.Under the application scenarios of intelligent grid, website can reach 6000 more than, can be with low 13 of AID, be bit 0 to bit 12, represent 6000 websites, with the group identifying information of bit 10～12 expression websites grouping of AID, be about to website and be divided into 8 groups, every group comprises maximum 1024 websites.
In the present embodiment, the intelligent grid website carries out data according to the fixing cycle and reports, and access control website AP regularly sends to website the distribution that the PSMP radio frames is carried out transmission opportunity according to multi-site poll energy-saving mode.The website most of time does not carry out data receiver and transmission, is in resting state, and waking up in the fixing cycle receives the PSMP radio frames that AP sends, thereby obtains the assignment information of transmission opportunity.The website that obtains transmission opportunity is only waken up before its corresponding transmission opportunity arrives, and carries out data report in its transmission opportunity.When the transmission opportunity of distributing finishes, perhaps station data reports when complete before the transmission opportunity of distributing finishes, perhaps station data reports complete and when receiving corresponding confirmation before the transmission opportunity of distributing finishes, website reenters resting state, until next PSMP radio frames arrives.
In the present embodiment, as shown in Figure 1, comprise group identifying information, station recognition offset information, station recognition number total information, resource mapping bit diagram, transmission opportunity start offset information and transmission opportunity unit duration information in the PSMP radio frames.
In the present embodiment, website is divided into 8 groups, and the group identifying information namely is comprised of 3 bits.Because the characteristic of user data is identical, AP can distribute respectively for each website the transmission opportunity of one or more transmission opportunity unit durations, and AP is transmission opportunity start offset information and the transmission opportunity unit duration information that the website notice is determined first transmission opportunity.
Being assigned with the website that all in the scope of website of transmission opportunity obtain transmission opportunitys can be by the indication of resource mapping bit diagram, wherein, and the corresponding website of one or more bits of resource mapping bit diagram.The value of corresponding one or more bits represents the number of the unit duration of the transmission opportunity that corresponding website obtains, for example, in the resource mapping bit diagram, the corresponding website of each bit, when this bit value is 1, represent that this website has obtained the transmission opportunity of a unit duration; And for example, two corresponding websites of bit in the resource mapping bit diagram, these two bits can be got " 00 ", " 01 ", " 10 ", " 11 ", wherein, " 00 " represents that this website does not obtain transmission opportunity, and " 01 " represents that this website has obtained the transmission opportunity of a unit duration, " 10 " represent that this website has obtained the transmission opportunity of two unit durations, and the rest may be inferred.Therefore website can determine that the number of the unit interval of the transmission opportunity that each website distributes reaches the relative position of the transmission opportunity of oneself according to bit diagram.
For example, one website judgement is in the resource mapping bit diagram, the corresponding website of each bit, the bit position of self correspondence is 1, before the bit position of self correspondence, it is 1 that five bit positions are arranged, and determines that the original position of the transmission opportunity of self is: 5 * transmission opportunity unit duration+transmission opportunity start offset.
And for example, one website judgement is in the resource mapping bit diagram, the corresponding website of every two bits, the bit position of self correspondence is " 10 ", before the bit position of self correspondence, 8 bits are arranged, and the corresponding bits position is set to respectively " 10 ", namely there are 4 websites to be assigned with transmission opportunity before this website, and each website has distributed respectively 2 transmission opportunity unit durations, and this website determines that the original position of the transmission opportunity of self is: 4 * 2 * transmission opportunity unit duration+transmission opportunity start offset.
After the positional information that obtains transmission opportunity, website namely can reenter resting state until before the transmission opportunity arrival of oneself, guarantee that when transmission opportunity began, website was in waking state.
As shown in Figure 2, in transmission opportunity, website sends data to AP, after AP receives data, send immediately acknowledgement frame in this transmission opportunity, if website is not received acknowledgement frame after special time, can retransmit, until this transmission opportunity finishes, website reenters resting state.
Embodiment 2:
As shown in Figure 3, in transmission opportunity, website sends data to AP, after AP receives data, do not send immediately acknowledgement frame, but after waiting for the transmission opportunity end of current all websites, send an acknowledgement bit figure to the website of all reported datas, acknowledgement bit figure should be mutually and puts 1 and represent successfully reception.
Website recovers waking state after the transmission opportunity of current all websites finishes, and receive described acknowledgement bit figure, if the relevant position of the corresponding acknowledgement bit figure of website is 0, expression AP does not successfully receive data, keep waking state, prepare to receive new transmission opportunity and distribute radio frames, obtain to retransmit the chance that sends.The rest may be inferred, until transmission success or maximum transmission times reach.
Embodiment 3:
As shown in Figure 4, the PSMP radio frames comprises: group identifying information, resource mapping bit diagram and transmission opportunity Duration Information.In the present embodiment, website is divided into 8 groups, and the group identifying information is comprised of 3 bits.Because the characteristic of user data is identical, AP distributes the transmission opportunity of identical duration for each website.The original position of first transmission opportunity is after specified time interval after the PSMP radio frames finishes, as, short interFrameGap (SIFS).Obtain the website of transmission opportunity in the group that the group identifying information points to by the indication of resource mapping bit diagram, wherein, the figure place of resource mapping bit diagram is determined by the number of website in group.The corresponding bit position is 1, represents that corresponding website obtains transmission opportunity, and the number that therefore website in group can mid-according to the resource mapping bit diagram 1 is determined the number of the transmission opportunity of distributing and the relative position of the transmission opportunity of oneself.
After the positional information that obtains transmission opportunity, website namely can reenter resting state until before the transmission opportunity arrival of oneself, guarantee that when transmission opportunity began, website was in waking state.
As Fig. 2, in transmission opportunity, website sends data to AP, after AP receives data, send immediately acknowledgement frame in this transmission opportunity, if website is not received acknowledgement frame after special time, can retransmit, until this transmission opportunity finishes, website reenters resting state.
Embodiment 4:
As shown in Figure 3, in transmission opportunity, website sends data to AP, after AP receives data, do not send immediately acknowledgement frame, but after the transmission opportunity of waiting for current all websites finishes, sending an acknowledgement bit figure to the website of all reported datas, this acknowledgement bit figure should be mutually and puts 1 and represent successfully reception.
Website recovers waking state after the transmission opportunity of current all websites finishes, and receive described acknowledgement bit figure, if the relevant position of the corresponding acknowledgement bit figure of website is 0, expression AP does not successfully receive data, keep waking state, prepare to receive new transmission opportunity and distribute radio frames, obtain to retransmit the chance that sends.The rest may be inferred, until transmission success or maximum transmission times reach.
Embodiment 5:
As shown in Figure 5, the PSMP radio frames comprises: station recognition start offset information, station recognition number total information, resource mapping bit diagram and transmission opportunity unit duration information.In the present embodiment, station recognition start offset information (start offset of AID) is 500, and station recognition number total information (website number) is 2000, and because the characteristic of user data is identical, AP distributes the transmission opportunity of identical duration for each website.The original position of first transmission opportunity is after specified time interval after the PSMP radio frames finishes, as short interFrameGap (SIFS).All obtain the website of transmission opportunity by the resource mapping bit diagram indication of 2000 bits, and wherein, the figure place of bit diagram is determined by the number of website in group.The corresponding bit position is 1, represents that corresponding website obtains transmission opportunity.Therefore the website in this group can reach according to the number of 1 the definite transmission opportunity of distributing of number in bit diagram the relevant position of oneself.
After the positional information that obtains transmission opportunity, website namely can reenter resting state until before the transmission opportunity arrival of oneself, guarantee that when transmission opportunity began, website was in waking state.
As described in Figure 2, in transmission opportunity, website sends data to AP, after AP receives data, sends immediately acknowledgement frame in this transmission opportunity, if website is not received acknowledgement frame after special time, can retransmit, until this transmission opportunity finishes.Website reenters resting state.
Embodiment 6:
As shown in Figure 3, in transmission opportunity, website sends data to AP, after AP receives data, do not send immediately acknowledgement frame, but after waiting for the transmission opportunity end of current all websites, send an acknowledgement bit figure to the website of all reported datas, acknowledgement bit figure should be mutually and puts 1 and represent successfully reception.
Website recovers waking state after the transmission opportunity of current all websites finishes, and receive described acknowledgement bit figure, if the relevant position of the corresponding acknowledgement bit figure of website is 0, expression AP does not successfully receive data, keep waking state, prepare to receive new transmission opportunity and distribute radio frames, obtain to retransmit the chance that sends.The rest may be inferred, until transmission success or maximum transmission times reach.
Embodiment 7:
As shown in Figure 6, the PSMP radio frames can only comprise: group identifying information and transmission opportunity unit duration information, expression all distributes transmission opportunity to the whole websites in the group of group identifying information sensing, the start offset information of transmission opportunity adopts the time predefined interval after radio frames finishes, short interFrameGap (Short Inter Frame Space, be called for short SIFS) for example.
perhaps, as shown in Figure 7, the PSMP radio frames only comprises: the station recognition offset information, station recognition number total information and transmission opportunity unit duration information, receiving station determines to be assigned with the scope of the website of transmission opportunity according to station recognition offset information and station recognition number total information, think that the website in scope all distributes transmission opportunity, determine the position of the transmission opportunity of self according to transmission opportunity unit duration information, behind the position that obtains transmission opportunity, website namely can reenter resting state until before the transmission opportunity arrival of oneself, guarantee when transmission opportunity begins, website is in waking state.
As shown in Figure 8, the access control website of present embodiment comprises: transmission opportunity allocation units and information transmitting unit, wherein:
The transmission opportunity allocation units, be used to website to distribute transmission opportunity, be generated as the indication information that website distributes transmission opportunity, comprise one or more in grouping indication information, transmitting continuous temporal information and resource mapping information for website distributes the indication information of transmission opportunity;
Information transmitting unit is used for and will sends to one or more websites for website distributes the indication information of transmission opportunity.
The grouping indication information comprises: the group identifying information and/or, station recognition offset information and station recognition number total information is indicated the scope of the website be assigned with transmission opportunity.
Transmitting continuous temporal information comprises: transmission opportunity start offset information and/or transmission opportunity unit duration information, the original position of the first transmission opportunity of transmission opportunity start offset information indication, the unit duration of transmission opportunity unit duration information indication transmission opportunity.
Resource mapping information indicates whether to distribute transmission opportunity for the website in the scope of the website that is assigned with transmission opportunity.
Present embodiment also provides a kind of website as shown in Figure 9, comprising: information receiving unit, transmission opportunity determining unit and radio frame transmission unit, wherein:
Information receiving unit, be used for receiving the radio frames that the access control website sends, check whether to be included as the indication information that website distributes transmission opportunity in radio frames, comprise one or more in grouping indication information, transmitting continuous temporal information and resource mapping information for website distributes the indication information of transmission opportunity;
The transmission opportunity determining unit is used for when radio frames is included as the indication information of website distribution transmission opportunity, according to original position and the duration of the indication information calculating transmission opportunity of distributing transmission opportunity for website;
The radio frame transmission unit is used for carrying out radio frame transmission in the transmission opportunity of distributing.
The transmission opportunity determining unit, whether specifically be used for according to grouping indication information and resource mapping validation of information access control website is that this website distributes transmission opportunity, distribute transmission opportunity if confirm as this website, according to original position and the duration of transmitting continuous temporal information acquisition for the transmission opportunity of this website distribution.
The radio frame transmission unit, concrete being used for sends radio frames to the access control website in the transmission opportunity of distributing for this website, and the acknowledgement frame of reception access control website, if do not receive the confirmation frame, retransmit in transmission opportunity, after receiving the confirmation the end of frame or transmission opportunity, website enters resting state.
The radio frame transmission unit, concrete being used for sends radio frames to the access control website in the transmission opportunity of distributing for this website, after being sent or after transmission opportunity finishes, enter resting state; After the transmission opportunity total duration finishes, enter waking state, receive the confirmation bit diagram that the access control website sends, wherein, the transmission opportunity total duration refers to total transmission opportunity duration that all distribute the website of transmission opportunity.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (26)
1. the dispatching method of a website, is characterized in that, comprising:
The access control website sends one or more in grouping indication information, transmitting continuous temporal information and resource mapping information to one or more websites, is that described website distributes transmission opportunity.
2. the method for claim 1 is characterized in that:
Described grouping indication information comprises: the group identifying information and/or, station recognition offset information and station recognition number total information is indicated the scope of the website be assigned with transmission opportunity.
3. method as claimed in claim 2 is characterized in that:
When comprising described group of identifying information not comprising station recognition offset information and station recognition number total information in described grouping indication information, the described scope that is assigned with the website of transmission opportunity is the whole websites in the grouping pointed to of described group of identifying information; Perhaps,
When comprising described station recognition offset information and station recognition number total information not comprising described group of identifying information in described grouping indication information, the described scope that is assigned with the website of transmission opportunity is the website definite with station recognition number total information according to the station recognition offset information; Perhaps,
When comprising group identifying information, station recognition offset information and station recognition number total information in described grouping indication information, the described scope that is assigned with the website of transmission opportunity is in the grouping pointed to of described group of identifying information, the website definite with station recognition number total information according to the station recognition offset information.
4. method as claimed in claim 2 or claim 3 is characterized in that:
The identical website in front n position that comprises related identifier in the grouping that front n (n 〉=1) position of the related identifier that described group of identifying information is website, described group of identifying information are pointed to.
5. the method for claim 1, is characterized in that, also comprises:
When described access control website did not send described grouping indication information to described one or more websites, the Basic Service Set at described access control website place used predefined grouping indication information.
6. the method for claim 1 is characterized in that:
Described transmitting continuous temporal information comprises: transmission opportunity start offset information and/or transmission opportunity unit duration information, the original position of the first transmission opportunity of described transmission opportunity start offset information indication, the unit duration of described transmission opportunity unit duration information indication transmission opportunity.
7. method as claimed in claim 6 is characterized in that:
When comprising described transmission opportunity start offset information not comprising transmission opportunity unit duration information in described transmitting continuous temporal information, described website adopts predefined transmission opportunity unit duration; Perhaps,
When comprising described transmission opportunity unit duration information not comprising described transmission opportunity start offset information in described transmitting continuous temporal information, described website adopts time predefined interval after the radio frames of the described transmission opportunity unit duration information of carrying as described transmission opportunity start offset information.
8. the method for claim 1, is characterized in that, also comprises:
When described access control website did not send described transmitting continuous temporal information to described one or more websites, the Basic Service Set at described access control website place adopted predefined transmitting continuous temporal information.
9. method as described in claim 2 or 5 is characterized in that:
Described resource mapping information indicates whether to distribute transmission opportunity for the website of described grouping indication information indication.
10. method as claimed in claim 9 is characterized in that:
Described resource mapping information adopts the resource mapping bit diagram, one or more bits in described resource mapping bit diagram are corresponding described is assigned with a website in the scope of website of transmission opportunity, indicates whether to distribute for the website of correspondence the quantity of the shared unit duration of transmission opportunity of transmission opportunity and distribution.
11. the method for claim 1 is characterized in that:
When described access control website did not send described resource mapping information to described one or more websites, the Basic Service Set at described access control website place adopted predefined resource mapping information.
12. a data transmission method is characterized in that, comprising:
Website receives the radio frames that the access control website sends, check whether be included as the indication information that website distributes transmission opportunity in described radio frames, described indication information for website distribution transmission opportunity comprises one or more in grouping indication information, transmitting continuous temporal information and resource mapping information;
Described website comprises described when distributing the indication information of transmission opportunity for website in described radio frames, according to described original position and the duration of distributing the indication information calculating transmission opportunity of transmission opportunity for website, and carry out radio frame transmission in the transmission opportunity of distributing for this website.
13. method as claimed in claim 12 is characterized in that, according to described original position and the duration of distributing the indication information calculating transmission opportunity of transmission opportunity for website, comprising:
Whether described website is that this website distributes transmission opportunity according to grouping indication information and resource mapping validation of information access control website, distribute transmission opportunity if confirm as this website, be calculated as original position and the duration of the transmission opportunity of this website distribution according to transmitting continuous temporal information.
14. method as claimed in claim 13 is characterized in that, also comprises:
Described website is receiving the grouping indication information when not receiving resource mapping information, confirm according to predefined resource mapping information and the grouping indication information that receives whether the access control website is that this website distributes transmission opportunity, distribute transmission opportunity if confirm as this website, calculate original position and the duration of transmission opportunity according to transmitting continuous temporal information; Perhaps,
Described website does not receive grouping during indication information receiving resource mapping information, whether be that this website distributes transmission opportunity according to predefined grouping indication information with the resource mapping validation of information access control website that receives, distribute transmission opportunity if confirm as this website, calculate original position and the duration of transmission opportunity according to transmitting continuous temporal information.
15. method as described in claim 13 or 14 is characterized in that, also comprises:
Described website adopts time predefined interval after radio frames as described transmission opportunity start offset information, and adopts predefined transmission opportunity unit duration when not receiving transmitting continuous temporal information; Perhaps,
Described website is receiving transmitting continuous temporal information, and when comprising transmission opportunity unit duration information in transmitting continuous temporal information and not comprising transmission opportunity start offset information, adopt time predefined interval after radio frames as described transmission opportunity start offset information; Perhaps,
Described website is receiving transmitting continuous temporal information, and when comprising transmission opportunity start offset information in transmitting continuous temporal information and not comprising transmission opportunity unit duration information, adopts predefined transmission opportunity unit duration.
16. method as claimed in claim 12 is characterized in that, described website carries out radio frame transmission in the transmission opportunity of distributing for this website, comprising:
Described website sends radio frames to described access control website in the transmission opportunity of distributing for this website, and the acknowledgement frame of reception access control website, if do not receive the confirmation frame, retransmit in described transmission opportunity, after receiving the end of described acknowledgement frame or described transmission opportunity, described website enters resting state.
17. method as claimed in claim 12 is characterized in that, described website carries out radio frame transmission in the transmission opportunity of distributing for this website, comprising:
Described website sends radio frames to described access control website in the transmission opportunity of distributing for this website, after being sent or after transmission opportunity finishes, enter resting state;
Described website is after the transmission opportunity total duration finishes, enter waking state, receive the confirmation bit diagram that described access control website sends, wherein, the transmission opportunity total duration refers to the transmission opportunity duration sum of the website that all are assigned with transmission opportunity.
18. method as claimed in claim 17 is characterized in that, also comprises:
When described acknowledgement bit figure indicated described access control website to receive the radio frames of described website transmission, described website entered resting state;
When described acknowledgement bit figure indicated described access control website not receive the radio frames of described website transmission, described website kept waking state, waited for that described access control website distributes transmission opportunity to retransmit.
19. an access control website is characterized in that, comprising: transmission opportunity allocation units and information transmitting unit, wherein:
Described transmission opportunity allocation units, be used to website to distribute transmission opportunity, be generated as the indication information that website distributes transmission opportunity, described indication information for website distribution transmission opportunity comprises one or more in grouping indication information, transmitting continuous temporal information and resource mapping information;
Described information transmitting unit is used for sending to one or more websites with described for website distributes the indication information of transmission opportunity.
20. access control website as claimed in claim 19 is characterized in that:
Described grouping indication information comprises: the group identifying information and/or, station recognition offset information and station recognition number total information is indicated the scope of the website be assigned with transmission opportunity.
21. access control website as claimed in claim 19 is characterized in that:
Described transmitting continuous temporal information comprises: transmission opportunity start offset information and/or transmission opportunity unit duration information, the original position of the first transmission opportunity of described transmission opportunity start offset information indication, the unit duration of described transmission opportunity unit duration information indication transmission opportunity.
22. access control website as claimed in claim 20 is characterized in that:
Described resource mapping information indicates whether to distribute transmission opportunity for the website in the scope of the described website that is assigned with transmission opportunity.
23. a website is characterized in that, comprising: information receiving unit, transmission opportunity determining unit and radio frame transmission unit, wherein:
Described information receiving unit, be used for receiving the radio frames that the access control website sends, check whether be included as the indication information that website distributes transmission opportunity in described radio frames, described indication information for website distribution transmission opportunity comprises one or more in grouping indication information, transmitting continuous temporal information and resource mapping information;
Described transmission opportunity determining unit is used for when described radio frames is included as the indication information of website distribution transmission opportunity, according to described original position and the duration of distributing the indication information calculating transmission opportunity of transmission opportunity for website;
Described radio frame transmission unit is used for carrying out radio frame transmission in the transmission opportunity of distributing.
24. website as claimed in claim 23 is characterized in that:
Described transmission opportunity determining unit, whether specifically be used for according to grouping indication information and resource mapping validation of information access control website is that this website distributes transmission opportunity, distribute transmission opportunity if confirm as this website, according to original position and the duration of transmitting continuous temporal information acquisition for the transmission opportunity of this website distribution.
25. website as claimed in claim 23 is characterized in that:
Described radio frame transmission unit, concrete being used for sends radio frames to described access control website in the transmission opportunity of distributing for this website, and the acknowledgement frame of reception access control website, if do not receive the confirmation frame, retransmit in described transmission opportunity, after receiving the end of described acknowledgement frame or described transmission opportunity, described website enters resting state.
26. website as claimed in claim 23 is characterized in that:
Described radio frame transmission unit, concrete being used for sends radio frames to described access control website in the transmission opportunity of distributing for this website, after being sent or after transmission opportunity finishes, enter resting state; After the transmission opportunity total duration finishes, enter waking state, receive the confirmation bit diagram that described access control website sends, wherein, the transmission opportunity total duration refers to total transmission opportunity duration that all distribute the website of transmission opportunity.
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| CN201110348338.2A CN103096439B (en) | 2011-11-07 | 2011-11-07 | Dispatching method, data transmission method, access control website and the website of website |
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| CN201110348338.2A CN103096439B (en) | 2011-11-07 | 2011-11-07 | Dispatching method, data transmission method, access control website and the website of website |
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