CN102694633A - Method and system for transmission of dynamic bandwidth data frame - Google Patents
Method and system for transmission of dynamic bandwidth data frame Download PDFInfo
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- CN102694633A CN102694633A CN2011100679979A CN201110067997A CN102694633A CN 102694633 A CN102694633 A CN 102694633A CN 2011100679979 A CN2011100679979 A CN 2011100679979A CN 201110067997 A CN201110067997 A CN 201110067997A CN 102694633 A CN102694633 A CN 102694633A
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Abstract
The invention discloses a method and system for transmission of dynamic bandwidth data frame. The method comprises that a transmitting site sends a channel reservation request supporting dynamic bandwidth to a receiving site; the transmitting site receives a dynamic bandwidth channel reservation confirmation from the receiving site; within transmission duration indicated by the dynamic bandwidth channel reservation conformation, the transmitting site adopts transmitting bandwidth information which is not more than that indicated by the dynamic bandwidth channel reservation confirmation, to transmit data wireless frames with the receiving site, and continues to transmit the data wireless frames when exceeding the transmitting duration indicated by the dynamic bandwidth channel reservation confirmation. The method and the system of the invention can reduce cost and enhance data transmitting efficiency in dynamic bandwidth.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of dynamic bandwidth data frame transmission method and system.
Background technology
At present, in field of wireless, wireless lan (wlan) is fast-developing, and is growing to the demand requirement that WLAN covers, also increasingly high to the requirement of throughput.In the Institute of Electrical and Electric Engineers industrial specification IEEE802.11 group, successively defined 802.11a, 802.11b; 802.11g etc. the prevailing WLAN technology of series of standards, occurred other task groups subsequently again successively, be devoted to develop the standard that relates to existing 802.11 technological improvements; For example; 802.11n task groups proposes the high-throughput requirement of (High throughput is called for short HT), supports the data rate up to 600Mbps; 802.11ac task groups further proposes the notion of VHT (Very High throughput), through introducing bigger channel width data rate is risen to 1Gbps.And along with the evolution of 802.11 agreements, the channel width of traditional 20MHz has expanded to 40MHz, 80MHz, 120MHz, even 160MHz, and these big bandwidth are bound by several 20MHz and formed.Wherein 40MHz is made up of continuous 20MHz and 20MHz, and 80MHz is made up of continuous 40MHz and 40MHz, and 160MHz is made up of continuous perhaps discontinuous 80MHz and 80MHz.Under the 40MHz bandwidth, one of them 20MHz is called main channel, and other 20MHz channels are called auxilliary channel.Under the 80MHz bandwidth, one of them 20MHz is called main channel, and the 40MHz that contains main channel is called main 40M channel, and other 40MHz channels are called auxilliary channel, by that analogy.
802.11 in, an access point (Access Point is called for short AP) and a plurality of websites (STAtion is called for short STA) that are associated with AP have been formed a Basic Service Set (Basic Service Set is called for short BSS).802.11 defined two kinds of operator schemes: distributed coordination function (Distributed Coordination Function; Be called for short DCF) and point coordination function (Point Coordination Function; Be called for short PCF); And the improvement that is directed against these two kinds of operator schemes: enhancement mode distributed coordination access function (Enhanced Distributed Channel Access; Be called for short EDCA) and Hybrid Coordination Function control channel access function (Hybrid Coordination function Controlled channel Access is called for short HCCA).Wherein, DCF is the most basic operator scheme, utilizes the Carrier Sense Multiple Access mechanism CSMA/CA (CSMA with Collision Avoidance) that having conflicts avoids to make a plurality of website sharing wireless channel.EDCA is the enhanced kind of operation pattern, utilizes CSMA/CA mechanism, makes a plurality of different priorities queue sharing wireless channels, and preengages a transmission opportunity (Transmission Opportunity is called for short TXOP).Preengage a transmission opportunity and promptly preengage one section transmission duration (TXOP Duration).Each priority query with qos requirement has a transmission time threshold value TXOP limit parameter respectively, is used to limit the duration restriction of the maximum of the TXOP that this priority query obtains.
During a plurality of wireless site shared channel, the collision detection of the wireless environment very difficulty that becomes, wherein a big problem is exactly hiding website.
Fig. 1 is the sketch map according to the hiding website of correlation technique, and is as shown in Figure 1, and website A sends data to B, and website C also sends data to B simultaneously, because A and C are in outside the other side's the coverage each other, A and C send simultaneously and will lead to a conflict.From the angle of A, C promptly is a hiding website.Hide the website problem for solving, 802.11 have proposed the pseudo channel testing mechanism, promptly through in the radio frames frame head, comprising reservation channel time information; Other websites of auditing that receive the radio frames that contains time reservation information are provided with a local network allocation vector (Network Allocation Vector abbreviates NAV as) of storing, and the value of NAV is set to the maximum of above-mentioned time reservation information; In this time; Audit website and can not send data, thereby avoided the concealed nodes competitive channel, cause collision; After NAV was kept to zero, other websites could send data.Be elaborated below in conjunction with Fig. 2.
Fig. 2 is the sketch map according to the RTS/CTS of correlation technique; As shown in Figure 2; Send website transmission RTS (Request to send) frame and carry out channel booking, wherein comprise the first channel booking temporal information, receiving station response CTS (Clear to send) frame carries out channel booking and confirms; Wherein comprise second channel subscription time information, to guarantee that sending website can accomplish the frame exchange.Wherein, the indicated channel booking of the first channel booking temporal information indicated channel booking deadline and second channel subscription time information is identical deadline.
Simultaneously; Under big bandwidth channel, because the situation of the BSS of the overlapping covering around transmission website and the receiving station (Overlapping BSS is called for short OBSS) is different; Its bandwidth of operation separately is therefore also different, can utilize RTS/CTS mechanism to support the negotiation of the dynamic bandwidth of receiving-transmitting sides.For example, send website transmission RTS frame and carry out channel booking, wherein comprise the transmission bandwidth information of the first channel booking temporal information and request; One section interFrameGap (the PCF interFrameGap of receiving station before RTS sends; PCF InterFrame Space is called for short PIFS) in, in the transmission bandwidth of RTS indication, carry out channel idle and detect; And according to testing result transmission CTS response frame on corresponding idle channel; Carry out channel booking and confirm, wherein comprise the transmission bandwidth information of second channel subscription time information and response in the CTS frame, send website after receiving CTS; Transmission bandwidth according to the bandwidth specified data radio frames of CTS indication; And in the transmission duration of being preengage, carry out the transmission of follow-up data radio frames, can in suitable bandwidth, accomplish frame with receiving station and exchange thereby guaranteed to send website, avoid and other OBSS between interference.
To the frame exchange process under the above-mentioned dynamic bandwidth, after the RTS/CTS agreed bandwidth, the employed bandwidth of Frame of sending the follow-up transmission of website is consistent with the bandwidth of receiving station indication.But the bandwidth of receiving station indication possibly sent the bandwidth of asking when website sends RTS and reduced, and this just causes the data transmitting time to increase (packet not the words of segmentation) again.For example, the bandwidth of RTS indication is 80MHz, and the bandwidth of CTS indication is 40MHz, and then to exchange employed bandwidth be 40MHz to subsequent data frame, and this just causes under same MCS, and data transmission rate reduces by half, and the data transmitting time prolongs one times.
In addition, consider that there is the transmitting time threshold value in the transmission of Frame in the correlation technique, therefore the increase of above-mentioned data transmitting time possibly cause exceeding this time threshold, and then influences the rationally efficient utilization of bandwidth resources.
Summary of the invention
Thereby the increase to data transmitting time in the correlation technique can influence the rationally efficient problem of utilizing of bandwidth resources above the channel booking time of second channel subscription time information indication and propose the present invention; For this reason; Main purpose of the present invention is to provide a kind of dynamic bandwidth data frame transmission method and system, to address the above problem.
To achieve these goals, according to an aspect of the present invention, a kind of dynamic bandwidth data frame transmission method is provided.
Dynamic bandwidth data frame transmission method according to the present invention comprises: send website and send the channel booking request of supporting dynamic bandwidth to receiving station; Send website and receive dynamic bandwidth channel booking affirmation from receiving station; Sending website confirms in the transmission duration of indication at the dynamic bandwidth channel booking; Use is not more than the transmission bandwidth information that the dynamic bandwidth channel booking is confirmed indication; The transmission of the data wireless frame of initiation and receiving station; And after the transmission duration that surpasses dynamic bandwidth channel booking affirmation indication, continue the transmission of data wireless frame.
Further; Send website after the transmission duration that surpasses dynamic bandwidth channel booking affirmation indication; It is one of following that the transmission that continues the data wireless frame comprises: send website and confirm the transmission duration of indication and surpass under the situation of transmission time threshold value of transmission opportunity surpassing the dynamic bandwidth channel booking; Continue the transmission of data wireless frame, wherein, the transmission time threshold value of transmission opportunity is the maximum transmission time relevant with the quality of service of data wireless frame; Send website under the situation of the transmission time threshold value that surpasses transmission opportunity; Continue the transmission of data wireless frame; Wherein, The transmission time threshold value of transmission opportunity is the maximum transmission time relevant with the quality of service of data wireless frame, and the transmission time threshold value of transmission opportunity is confirmed the transmission duration of indication more than or equal to the dynamic bandwidth channel booking.
Further, carry out the front and back of dynamic bandwidth channel booking to receiving station sending website, the load length of data wireless frame remains unchanged.
Further, before the transmission of the data wireless frame that sends website initiation and receiving station, method also comprises: use and send bandwidth information, carry out channel booking again to receiving station.
Further, sending website carries out channel booking again to receiving station and comprises one of following: send website transmitting channel reservation notice radio frames; Send website and receiving station and carry out the channel booking wireless frame exchange.
Further, the transmission of data wireless frame comprise following one of at least: the response frame of the response frame of the data wireless frame that send data wireless frame that website sends, send the radio frames that is associated with the data wireless frame that website sends, receiving station sends, the radio frames that is associated with the data wireless frame that receiving station sends.
Further, the data wireless frame is the data wireless frame that retransmits.
To achieve these goals, according to another aspect of the present invention, a kind of dynamic bandwidth data frame transfer system is provided.
Comprise according to dynamic bandwidth data frame transfer of the present invention system and to send website and receiving station, wherein send website and comprise: sending module is used for sending the channel booking request of supporting dynamic bandwidth to receiving station; Receiver module, the dynamic bandwidth channel booking that is used to receive from receiving station is confirmed; Transport module; Be used for confirming the transmission duration of indication at the dynamic bandwidth channel booking; Use is not more than the transmission bandwidth information that the dynamic bandwidth channel booking is confirmed indication; The transmission of the data wireless frame of initiation and receiving station, and after the transmission duration that surpasses dynamic bandwidth channel booking affirmation indication, the transmission of continuation data wireless frame.
Further; Transport module comprises: the first transmission submodule; Be used for confirming the transmission duration of indication and surpassing under the situation of transmission time threshold value of transmission opportunity surpassing the dynamic bandwidth channel booking; Continue the transmission of data wireless frame, wherein, the transmission time threshold value of transmission opportunity is the maximum transmission time relevant with the quality of service of data wireless frame; The second transmission submodule; Be used under the situation of the transmission time threshold value that surpasses transmission opportunity; Continue the transmission of data wireless frame; Wherein, the transmission time threshold value of transmission opportunity is the maximum transmission time relevant with the quality of service of data wireless frame, and the transmission time threshold value of transmission opportunity is confirmed the transmission duration of indication greater than the dynamic bandwidth channel booking.
Further, carry out the front and back of dynamic bandwidth channel booking to receiving station sending website, the load length of data wireless frame remains unchanged.
Through the present invention, after the transmission duration that surpasses dynamic bandwidth channel booking affirmation indication, proceed the transmission of dynamic bandwidth Frame, thereby can reduce expense, improve the data transmission efficiency under the dynamic bandwidth.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the sketch map according to the hiding website of correlation technique;
Fig. 2 is the sketch map according to the RTS/CTS of correlation technique;
Fig. 3 is the flow chart according to the dynamic bandwidth data frame transmission method of the embodiment of the invention;
Fig. 4 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention one;
Fig. 5 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention two;
Fig. 6 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention three;
Fig. 7 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention five;
Fig. 8 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention six;
Fig. 9 is the structured flowchart according to the dynamic bandwidth data frame transfer system of the embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
The invention provides a kind of dynamic bandwidth data frame transmission method.Fig. 3 is the flow chart according to the dynamic bandwidth data frame transmission method of the embodiment of the invention, and is as shown in Figure 3, comprises that following step S302 is to step S306.
Step S302 sends website and sends the channel booking request of supporting dynamic bandwidth to receiving station.
Step S304 sends website and receives the dynamic bandwidth channel booking affirmation from receiving station.
Step S306; Sending website confirms in the transmission duration of indication at the dynamic bandwidth channel booking; Use is not more than the transmission bandwidth information that the dynamic bandwidth channel booking is confirmed indication; The transmission of the data wireless frame of initiation and receiving station, and after the transmission duration that surpasses dynamic bandwidth channel booking affirmation indication, the transmission of continuation data wireless frame.
The increase of data transmitting time can surpass the transmission duration that the dynamic bandwidth channel booking is confirmed indication in the correlation technique, if therefore abandon transmitting or the processing of again data being carried out the segmentation reorganization then influences the rationally efficient of bandwidth resources and utilizes.In the embodiment of the invention, after the transmission duration that surpasses this dynamic bandwidth channel booking affirmation indication, proceed the transmission of dynamic bandwidth Frame, thereby can reduce expense, improve the data transmission efficiency under the dynamic bandwidth.
Preferably; Send website after the transmission duration that surpasses dynamic bandwidth channel booking affirmation indication; It is one of following that the transmission that continues the data wireless frame comprises: send website and confirm the transmission duration of indication and surpass under the situation of transmission time threshold value of transmission opportunity surpassing the dynamic bandwidth channel booking; Continue the transmission of data wireless frame, wherein, the transmission time threshold value of transmission opportunity is the maximum transmission time relevant with the quality of service of data wireless frame; Send website under the situation of the transmission time threshold value that surpasses transmission opportunity; Continue the transmission of data wireless frame; Wherein, The transmission time threshold value of transmission opportunity is the maximum transmission time relevant with the quality of service of data wireless frame, and the transmission time threshold value of transmission opportunity is confirmed the transmission duration of indication more than or equal to the dynamic bandwidth channel booking.
Preferably, carry out the front and back of dynamic bandwidth channel booking to receiving station sending website, the load length of data wireless frame remains unchanged.
Preferably, before the transmission of the data wireless frame that sends website initiation and receiving station, method also comprises: use and send bandwidth information, carry out channel booking again to receiving station.
Preferably, sending website carries out channel booking again to receiving station and comprises one of following: send website transmitting channel reservation notice radio frames; Send website and receiving station and carry out the channel booking wireless frame exchange.
Preferably, the transmission of data wireless frame comprise following one of at least: the response frame of the response frame of the data wireless frame that send data wireless frame that website sends, send the radio frames that is associated with the data wireless frame that website sends, receiving station sends, the radio frames that is associated with the data wireless frame that receiving station sends.
Preferably, the data wireless frame is the data wireless frame that retransmits.
To combine instance that the implementation procedure of the embodiment of the invention is described in detail below.
Preferred embodiment one
Fig. 4 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention one.
Under big bandwidth channel; Because it is different with receiving station OBSS situation on every side to send website; Its bandwidth of operation separately is therefore also different, when obtaining a transmission opportunity TXOP, sends website and receiving station and can utilize RTS/CTS mechanism to carry out the negotiation of dynamic bandwidth.Send the PIFS of website before sending RTS and carry out the channel idle detection at interval, judge that current available bandwidth is 80MHz, promptly on the 80MHz bandwidth, send RTS and carry out channel booking.Send website according to the time span of data of waiting to send out and possible response and suitable interFrameGap calculating channel subscription time information D uration, and be carried on the RTS frame, also carry the transmission bandwidth information CH_BANDWIDTH of request simultaneously, i.e. 80MHz.Receiving station in the transmission bandwidth 80MHz of RTS indication, detect channel whether the PIFS before RTS sends be the free time at interval.In this example; The receiving station 40MHz that comprises main channel therein goes up and detects to idle; Then on this 40MHz, send the CTS response frame, carry out channel booking and confirm, wherein also comprise the transmission bandwidth information CH_BANDWIDTH of channel booking temporal information and response in the CTS frame; Send website after receiving CTS, the bandwidth 40MHz that indicates according to CTS carries out follow-up transfer of data.
The outgoing data that sends website in this example is the data of video flowing type, and the professional corresponding maximum transmitted time limit TXOP Limit of the type is 3.008ms, therefore is limited to 3.008ms during the current send opportunity that obtains maximum.The time that the transmission website is preengage when sending RTS is 2.5ms; Comprise CTS and send duration; The transmission duration of first Frame data frame1 after bandwidth is consulted, data validation frame Ack1, the transmission duration of second Frame data frame2; Data validation frame ACK2, and necessary interFrameGap.The recipient replys CTS, and its channel booking time is that 2.5ms deducts a CTS transmission duration and a short interFrameGap (SIFS).When sending after bandwidth is reduced to 40MHz by 80MHz, if keep waiting the frame length of the data sent out, then data frame1 and data frame 2 corresponding transmission durations double.Cause the transmission duration of the transfer of data first time (interFrameGap that data frame1+ACK+ is necessary) after bandwidth is consulted to surpass predetermined maximum transmitted time limit TXOP limit after the transmission duration of data frame1 increases in this example; Because the beginning delivery time of data frame1 is in the channel booking duration; Therefore send website and after dynamic bandwidth channel booking RTS/CTS accomplishes, send data frame1; And accomplish transfer of data for the first time, promptly accomplish the transmission of data frame1 and the reception of ACK1.Because the DTD time has exceeded the channel booking duration and surpassed TXOP limit for the first time, said send opportunity finished behind the DTD in the first time.
Preferred embodiment two
Fig. 5 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention two.
With preferred embodiment one; Consult RTS/CTS completion continued transmission data when sending website in bandwidth; Be the transmission of data frame1, do not receive that after waiting for specified time interval ACK1 confirms response, then retransmit data frame1 in the back at interval at the PIFS that has sent data frame1; Because the beginning delivery time of the data frame1 that retransmits is in the channel booking duration; Therefore send website and retransmit data frame1, and accomplish this Frame and transmit again, accomplish promptly that resending of data frame1 sent and the reception of new ACK acknowledgement frame.Because this Frame transmission end time has again exceeded the channel booking duration and surpassed TXOP limit, said send opportunity finishes after the end of transmission at this again.If retransmit data frame1, do not receive new ACK acknowledgement frame yet, then this transmission opportunity finishes.
Preferred embodiment three
Fig. 6 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention three.
With preferred embodiment one; Because the beginning delivery time of data frame1 is in the channel booking duration; Therefore send data when sending website in bandwidth negotiation RTS/CTS completion continued; Be the transmission of data frame1, do not receive that after waiting for specified time interval ACK1 confirms response, bust this this time.Because this transmission has exceeded the channel booking duration and has surpassed TXOP limit, then finishes this transmission, and carries out normal backoff procedure again, and after obtaining next send opportunity, retransmit.
Preferred embodiment four
With preferred embodiment one; When sending website when bandwidth is consulted RTS/CTS completion continued transmission data; Send website and confirm radio frames transmission bandwidth; And judge that this sends data frame1 under the bandwidth; Whether the transmission duration of ACK1 and corresponding interFrameGap can surpass RTS/CTS channel booking time or the maximum duration restricted T XOP limit that sends, and the duration of first radio frame transmission in this example behind the channel booking (data frame1, ACK1 and corresponding interFrameGap) surpasses TXOP limit; Then dispatching station point calculates the duration parameter Duration in the data frame1 frame head according to following principle, and promptly the radio frames that equals to confirm is sent the ACK1 acknowledgement frame of data frame1 under the bandwidth and the transmission duration of corresponding interFrameGap the Duration time.That is:
D＝TSINGLE-MSDU-TPPDU
Wherein TSINGLE-MSDU sends data frame1 down, needed transmission duration of ACK1 and corresponding necessary interFrameGap for the current available bandwidth of estimating; TPPDU is for sending the required transmission duration of current data frame1.
Preferred embodiment five
Fig. 7 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention five.
With preferred embodiment one, the channel duration that causes the transmission duration of the transfer of data first time (interFrameGap that data frame1+ACK+ is necessary) after bandwidth is consulted to surpass after the transmission duration of data frame1 increases in this example being preengage but in maximum is sent time limit TXOP limit.Because the beginning delivery time of data frame1 is in the channel booking duration; Therefore send website and after dynamic bandwidth channel booking RTS/CTS accomplishes, send data frame1; And accomplish transfer of data for the first time, promptly accomplish the transmission of data frame1 and the reception of ACK1.Because the DTD time has exceeded the channel booking duration for the first time, said send opportunity finished behind the DTD in the first time.
Preferred embodiment six
Fig. 8 is the sketch map according to the dynamic bandwidth data frame transmission method of the preferred embodiment of the present invention six.
The dynamic bandwidth of this preferred embodiment is consulted the process of back acquisition chance with preferred embodiment one.
The outgoing data that sends website in this preferred embodiment is the data of video flowing type, and the professional corresponding maximum transmitted time limit TXOP Limit of the type is 3.008ms, therefore is limited to 3.008ms during the current send opportunity that obtains maximum.The time that the transmission website is preengage when sending RTS is 1.5ms, comprises CTS and sends duration, the transmission duration of first Frame data frame1 after bandwidth is consulted, data validation frame Ack1, and necessary interFrameGap.When sending after bandwidth is reduced to 40MHz by 80MHz, if do not change the frame length of the data of waiting to send out, then data frame1 transmits duration accordingly and doubles.The transmission duration of the transfer of data first time after the transmission duration of data frame1 increases in this example (interFrameGap that data frame1+ACK+ is necessary) is still in predetermined maximum transmitted time limit TXOP limit; Send website after bandwidth is consulted the RTS/CTS completion; Dispatching station point is confirmed radio frames transmission bandwidth according to the bandwidth information after consulting; And carry out channel booking again according to determined transmission bandwidth, and promptly send website (can be short interFrameGap SIFS or PCF interFrameGap PIFS) behind an interFrameGap, this example is to fix the RTS/CTS channel booking of (static state) bandwidth 40MHz behind the SIFS interFrameGap; After preengaging successfully; Send website and continue to send data, accomplish this data frame transfer, promptly accomplish the transmission of data frame1 and the reception of ACK1.
Need to prove; Can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions; And; Though logical order has been shown in flow chart, in some cases, can have carried out step shown or that describe with the order that is different from here.
The embodiment of the invention provides a kind of dynamic bandwidth data frame transfer system, and this dynamic bandwidth data frame transfer system can be used to realize above-mentioned dynamic bandwidth data frame transmission method.Fig. 9 is the structured flowchart according to the dynamic bandwidth data frame transfer system of the embodiment of the invention; As shown in Figure 9; Comprise and send website 91 and receiving station 92, wherein send website 91 and comprise sending module 911, receiver module 912, transport module 913, be described in detail in the face of its structure down.
Sending module 911 is used for sending the channel booking request of supporting dynamic bandwidth to receiving station; Receiver module 912 is connected to sending module 911, and the dynamic bandwidth channel booking that is used to receive from receiving station is confirmed; Transport module 913; Be connected to receiver module 912; The dynamic bandwidth channel booking that is used for receiving at receiver module 912 is confirmed the transmission duration of indication, uses to be not more than the transmission bandwidth information that dynamic bandwidth channel booking that receiver module 912 receives is confirmed indication, initiates the transmission with the data wireless frame of receiving station 92; And after the dynamic bandwidth channel booking that surpasses receiver module 912 receptions is confirmed the transmission duration of indication, continue the transmission of data wireless frame.
Preferably, transport module 913 comprises the first transmission submodule 9131 and the second transmission submodule 9132.Be described in detail in the face of its structure down.
The first transmission submodule 9131; Be used for confirming the transmission duration of indication and surpassing under the situation of transmission time threshold value of transmission opportunity surpassing the dynamic bandwidth channel booking; Continue the transmission of data wireless frame; Wherein, the transmission time threshold value of transmission opportunity is the maximum transmission time relevant with the quality of service of data wireless frame; The second transmission submodule 9132; Be used under the situation of the transmission time threshold value that surpasses transmission opportunity; Continue the transmission of data wireless frame; Wherein, the transmission time threshold value of transmission opportunity is the maximum transmission time relevant with the quality of service of data wireless frame, and the transmission time threshold value of transmission opportunity is confirmed the transmission duration of indication greater than the dynamic bandwidth channel booking.
Preferably, carry out the front and back of dynamic bandwidth channel booking to receiving station 92 sending website 91, the load length of data wireless frame remains unchanged.
Need to prove that the dynamic bandwidth data frame transfer system of describing among the device embodiment is corresponding to above-mentioned method embodiment, its concrete implementation procedure had been carried out detailed description in method embodiment, repeat no more at this.
In sum, according to the abovementioned embodiments of the present invention, a kind of dynamic bandwidth data frame transmission method and system are provided.Through the present invention, after the transmission duration that surpasses dynamic bandwidth channel booking affirmation indication, proceed the transmission of dynamic bandwidth Frame, thereby can reduce expense, improve the data transmission efficiency under the dynamic bandwidth.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely 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 changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a dynamic bandwidth data frame transmission method is characterized in that, comprising:
Send website and send the channel booking request of supporting dynamic bandwidth to receiving station;
Said transmission website receives from the dynamic bandwidth channel booking of said receiving station to be confirmed;
Said transmission website is confirmed in the transmission duration of indication at said dynamic bandwidth channel booking; Use is not more than the transmission bandwidth information that said dynamic bandwidth channel booking is confirmed indication; The transmission of the data wireless frame of initiation and said receiving station; And after the transmission duration that surpasses said dynamic bandwidth channel booking affirmation indication, continue the transmission of said data wireless frame.
2. method according to claim 1 is characterized in that, said transmission website is surpassing after said dynamic bandwidth channel booking confirms the transmission duration of indication, and it is one of following that the transmission that continues said data wireless frame comprises:
Said transmission website is confirmed the transmission duration of indication and is surpassed under the situation of transmission time threshold value of said transmission opportunity surpassing said dynamic bandwidth channel booking; Continue the transmission of said data wireless frame; Wherein, the transmission time threshold value of said transmission opportunity is the maximum transmission time relevant with the quality of service of said data wireless frame;
Said transmission website is under the situation of the transmission time threshold value that surpasses said transmission opportunity; Continue the transmission of said data wireless frame; Wherein, The transmission time threshold value of said transmission opportunity is the maximum transmission time relevant with the quality of service of said data wireless frame, and the transmission time threshold value of said transmission opportunity is confirmed the transmission duration of indication more than or equal to said dynamic bandwidth channel booking.
3. method according to claim 1 is characterized in that, carries out the front and back of dynamic bandwidth channel booking at said transmission website to said receiving station, and the load length of said data wireless frame remains unchanged.
4. according to each described method in the claim 1 to 3; It is characterized in that; Before said transmission website was initiated the transmission with the data wireless frame of said receiving station, said method also comprised: use said transmission bandwidth information, carry out channel booking again to said receiving station.
5. method according to claim 4 is characterized in that, said transmission website carries out channel booking again to said receiving station and comprises one of following:
Said transmission website transmitting channel reservation notice radio frames;
Said transmission website and said receiving station carry out the channel booking wireless frame exchange.
6. according to each described method in the claim 1 to 3; It is characterized in that, the transmission of said data wireless frame comprise following one of at least: the response frame of the radio frames that is associated with said data wireless frame that the response frame of the said data wireless frame that the radio frames that is associated with said data wireless frame that the data wireless frame that said transmission website sends, said transmission website send, said receiving station send, said receiving station send.
7. according to each described method in the claim 1 to 3, it is characterized in that said data wireless frame is the data wireless frame that retransmits.
8. a dynamic bandwidth data frame transfer system is characterized in that, comprises sending website and receiving station, and wherein said transmission website comprises:
Sending module is used for sending the channel booking request of supporting dynamic bandwidth to receiving station;
Receiver module, the dynamic bandwidth channel booking that is used to receive from said receiving station is confirmed;
Transport module; Be used for confirming the transmission duration of indication at said dynamic bandwidth channel booking; Use is not more than the transmission bandwidth information that said dynamic bandwidth channel booking is confirmed indication; The transmission of the data wireless frame of initiation and said receiving station, and after the transmission duration that surpasses said dynamic bandwidth channel booking affirmation indication, continue the transmission of said data wireless frame.
9. system according to claim 8 is characterized in that, said transport module comprises:
The first transmission submodule; Be used for confirming the transmission duration of indication and surpassing under the situation of transmission time threshold value of said transmission opportunity surpassing said dynamic bandwidth channel booking; Continue the transmission of said data wireless frame; Wherein, the transmission time threshold value of said transmission opportunity is the maximum transmission time relevant with the quality of service of said data wireless frame;
The second transmission submodule; Be used under the situation of the transmission time threshold value that surpasses said transmission opportunity; Continue the transmission of said data wireless frame; Wherein, the transmission time threshold value of said transmission opportunity is the maximum transmission time relevant with the quality of service of said data wireless frame, and the transmission time threshold value of said transmission opportunity is confirmed the transmission duration of indication greater than said dynamic bandwidth channel booking.
10. system according to claim 8 is characterized in that, carries out the front and back of dynamic bandwidth channel booking at said transmission website to said receiving station, and the load length of said data wireless frame remains unchanged.
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| CN106535353A (en) * | 2015-09-10 | 2017-03-22 | 华为技术有限公司 | Random backoff method and device |
| WO2018014713A1 (en) * | 2016-07-22 | 2018-01-25 | 中兴通讯股份有限公司 | Spatial multiplexing transmission method and apparatus |
| CN108353436A (en) * | 2015-10-28 | 2018-07-31 | 高通股份有限公司 | The dynamic of wireless transmission to being carried out by the basic service set being overlapped is forbidden |
| CN109743769A (en) * | 2018-12-29 | 2019-05-10 | 深圳Tcl新技术有限公司 | Communication terminal RTS/CTS mechanism self-adaptation control method and relevant device |
| CN111132368A (en) * | 2019-12-23 | 2020-05-08 | 展讯通信（上海）有限公司 | Wireless data transmission method and device, storage medium and terminal |
| CN113840335A (en) * | 2020-06-08 | 2021-12-24 | 展讯通信（上海）有限公司 | Data transmission method and device |
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| WO2014190686A1 (en) * | 2013-05-27 | 2014-12-04 | 华为技术有限公司 | Interference processing method and device |
| US9900780B2 (en) | 2013-05-27 | 2018-02-20 | Huawei Technologies Co., Ltd. | Interference processing method and device |
| WO2015090156A1 (en) * | 2013-12-18 | 2015-06-25 | Huawei Technologies Co., Ltd. | System and method for speed frame exchange |
| US9775171B2 (en) | 2013-12-18 | 2017-09-26 | Futurewei Technologies, Inc. | System and method for speed frame exchange |
| CN104584473A (en) * | 2014-03-05 | 2015-04-29 | 华为终端有限公司 | Channel resource indication method and device |
| CN104158645A (en) * | 2014-08-28 | 2014-11-19 | 上海交通大学 | Media access control method based on full-duplex access point in wireless local area network |
| CN104158645B (en) * | 2014-08-28 | 2017-08-25 | 上海交通大学 | A kind of media access control method based on full duplex access point in WLAN |
| WO2016188245A1 (en) * | 2015-05-27 | 2016-12-01 | 中兴通讯股份有限公司 | Channel negotiation method, station and system |
| CN106535353A (en) * | 2015-09-10 | 2017-03-22 | 华为技术有限公司 | Random backoff method and device |
| CN106535353B (en) * | 2015-09-10 | 2020-02-14 | 华为技术有限公司 | Random back-off method and device |
| CN108353436A (en) * | 2015-10-28 | 2018-07-31 | 高通股份有限公司 | The dynamic of wireless transmission to being carried out by the basic service set being overlapped is forbidden |
| CN108353436B (en) * | 2015-10-28 | 2021-12-21 | 高通股份有限公司 | Dynamic barring of wireless transmissions by overlapping basic service sets |
| WO2018014713A1 (en) * | 2016-07-22 | 2018-01-25 | 中兴通讯股份有限公司 | Spatial multiplexing transmission method and apparatus |
| CN109743769A (en) * | 2018-12-29 | 2019-05-10 | 深圳Tcl新技术有限公司 | Communication terminal RTS/CTS mechanism self-adaptation control method and relevant device |
| CN109743769B (en) * | 2018-12-29 | 2021-08-24 | 深圳Tcl新技术有限公司 | Self-adaptive control method for RTS/CTS mechanism of communication terminal and related equipment |
| CN111132368A (en) * | 2019-12-23 | 2020-05-08 | 展讯通信（上海）有限公司 | Wireless data transmission method and device, storage medium and terminal |
| CN111132368B (en) * | 2019-12-23 | 2022-08-09 | 展讯通信（上海）有限公司 | Wireless data transmission method and device, storage medium and terminal |
| CN113840335A (en) * | 2020-06-08 | 2021-12-24 | 展讯通信（上海）有限公司 | Data transmission method and device |
| CN114466226A (en) * | 2022-01-28 | 2022-05-10 | 杭州灵伴科技有限公司 | Method, device, equipment and computer readable medium for determining bandwidth duration ratio |
| CN114466226B (en) * | 2022-01-28 | 2023-12-08 | 杭州灵伴科技有限公司 | Bandwidth duration duty cycle determination method, device, equipment and computer readable medium |
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