CN102595517A - Method and system for realizing data sending - Google Patents
Method and system for realizing data sending Download PDFInfo
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- CN102595517A CN102595517A CN2011100065483A CN201110006548A CN102595517A CN 102595517 A CN102595517 A CN 102595517A CN 2011100065483 A CN2011100065483 A CN 2011100065483A CN 201110006548 A CN201110006548 A CN 201110006548A CN 102595517 A CN102595517 A CN 102595517A
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Abstract
The invention discloses a method and system for realizing data sending, wherein the length of data to be sent can be determined by a functional module I of a sending site according to the indication information of a functional module II, wherein the indication information at least comprises one of the following data: available bandwidth information and length information of data to be sent of the receiving site; and data sent by the sending site to a receiving site according to the length of the determined data to be sent. The method and system for realizing data rending, disclosed by the invention, can be used for carrying out data sending normally under the condition of supporting dynamic bandwidth and avoiding the situation that data which are originally sent in appointed time on a large-bandwidth channel cannot be completely sent in the preset time.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of method and system of realizing that data are sent.
Background technology
At present, wireless lan (wlan) is fast-developing, and the increasing demand that WLAN is covered increases.Institute of Electrical and Electric Engineers industrial specification IEEE802.11 group has successively defined a series of WLAN technical standards such as 802.11a, 802.11b, 802.11g; Occur 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 high-throughput (High throughput; HT) data rate up to 600Mbps is supported in requirement, and the 802.11ac task groups further proposes superelevation throughput (Very High throughput; VHT) notion rises to 1Gbps with data rate.And; Evolution along with 802.11 agreements; The channel width of traditional 20MHz has expanded to 40MHz, 80MHz, 120MHz, even 160MHz, and these big bandwidth channels are formed by several 20MHz channel bondings; One of them 20MHz is called main channel, and other 20MHz channels are called auxilliary channel.Wherein, 80MHz can be discontinuous 40MHz and 40MHz, or continuous 80MHz, and 160MHz can be discontinuous 80MHz and 80MHz, or continuous 160MHz.
802.11 in, one insert website (access point, AP) and a plurality of non-access website related with AP (Station, STA) Basic Service Set of composition (basic service set, BSS).The bottom of Site Protocol stack comprises medium access control (Media Access Control; MAC) layer and physics (PHY) layer; The PHY layer is divided into Physical layer convergence protocol (Physical Layer Convergence Protocol again; PLCP) and physical media independent (physical medium dependent, PMD) layer is as shown in Figure 1.The packet from the upper strata that the MAC layer is received is called MAC layer service data unit (MAC Service Data Unit; MSDU); The MAC layer is to after MSDU packing and adding the MAC head, MSDU become the mac-layer protocol data cell (MAC Protocol Data Unit, MPDU).The MAC layer passes to the PHY layer with transmission parameter and the MPDU of MPDU; MPDU become PHY layer service data unit (PHY Service Data Unit, PSDU), the PHY layer adds head with PSDU; Form PHY layer protocol data cell (PHY Protocol Data Unit; PPDU), and send according to sending parameter, the data PPDU that is sent is also referred to as a Frame.
Under big bandwidth channel environment, possibly there is overlapping in the working channel of a plurality of BSS, disturb thereby form mutually, this BSS be called overlapping BSS (Overlapping BSS, OBSS).In a BSS, also possibly there is the WLAN devices of supporting diversity of protocol versions.For fear of the interference of OBSS, and the backward compatibility of supporting product, 802.11 have proposed protection mechanism.Main protection mechanism is before sending Frame; Earlier mutual transmitting channel reserve requests frame (the Request to send of receiving-transmitting sides; RTS) and channel booking response frame (Clear to send; CTS), carrying out channel booking, and the mode that RTS/CTS adopts legacy equipment to decode is sent.Specific practice is: transmit leg sends the RTS frame, wherein comprises a time-domain (channel booking time), shows the time span of transmit leg completion frame exchange needs; The recipient responds the CTS frame, wherein also comprises a time-domain, can accomplish the frame exchange to guarantee transmit leg.Other listen to this RTS/CTS audit website be provided with a network allocation vector (Network Allocation Vector, NAV), the value of NAV is set to the maximum in above-mentioned two time-domains; In this time, audit website and can not send data, thereby avoid causing the concealed nodes competitive channel, cause case of collision to take place.NAV is along with time slot successively decreases, and after NAV was kept to zero, other websites could send data.
Mutual RTS/CTS before Frame sends, the bandwidth of can also the negotiation data frame sending, concrete grammar is: transmit leg STA sends RTS detecting on the idle 20MHz channel; Carry the bandwidth of sending RTS among the RTS; Be the current available bandwidth of transmit leg, and the indication of supporting dynamic bandwidth/static bandwidth, when static bandwidth is supported in indication; After receiving terminal STA receives RTS; Detect that any auxilliary channel is busy (busy) in the certain hour before receiving RTS, just do not reply CTS, only all reply CTS when idle (idle) at all auxilliary channels; When dynamic bandwidth was supported in indication, main channel was idle, and then receiving terminal STA replys CTS in main channel, can also receive RTS's and receiving RTS before certain hour in detect on the auxilliary channel of idle and reply CTS.Carry the bandwidth of replying CTS, the i.e. current available bandwidth of receiving terminal among the CTS that replys.Transmit leg can be less than or equal to the current available bandwidth of recipient according to the bandwidth of the CTS specified data frame of recipient's answer, on this bandwidth, sends Frame then.
The problem that said method exists is: when supporting dynamic bandwidth, the recipient replys CTS probably according to the Channel Detection situation of self side on the bandwidth less than the transmit leg available bandwidth, and then the bandwidth of the follow-up transmission Frame of transmit leg also will reduce thereupon; This causes script can on big bandwidth channel, adopt the time of RTS reservation to send the data that finish can't send completion in the time of having preengage, thereby brings the time delay of data transmission, has reduced communication quality.
Summary of the invention
In view of this; Main purpose of the present invention is to provide a kind of method and system of realizing that data are sent; Send so that under the situation of supporting dynamic bandwidth, normally carry out data, the data that the time transmission of avoiding script on big bandwidth channel, to preengage finishes can't be sent situation about accomplishing and taken place in subscription time.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes that data are sent, this method comprises:
The functional module one of sending website confirms to be about to send the length of data according to the indication information of functional module two; It is one of following that said indication information comprises at least: the available bandwidth information of receiving station, data length information to be sent;
Send website and send data to receiving station according to the fixed said data length that is about to send.
When said indication information was the available bandwidth information of receiving station, functional module one confirmed that the said method that is about to send the length of data is:
Said functional module one is estimated the said length that is about to send data according to the available bandwidth information of receiving station;
Said functional module one notifies the data length of said estimation to said functional module two; Said functional module two is according to above-mentioned notice; Calculate said data of be about to sending through the physical layer service data length after filling and send the time that said physical layer protocol data unit needs; And with the physical layer service data length that calculates, and the time of sending physical layer protocol data unit and needing send to above-mentioned functions module one;
Said functional module one is according to the Time Calculation time parameter of said transmission physical layer protocol data unit needs, and said computing time, parameter and known time parameter compared, and judged whether to reappraise the length of said data to be sent; When the time parameter that calculates during smaller or equal to known time parameter, functional module one is packed according to the length that is about to send data of said estimation; When the time parameter that calculates during greater than known time parameter, estimate the said data length that sends of being about to again, be not more than known time parameter up to the time parameter that calculates.
When said indication information was the available bandwidth information of receiving station, functional module one confirmed that the said method that is about to send data length is:
Functional module one is sent message, and said message is used for the length that request function module two is calculated said data to be sent, bandwidth value, the former said data length value to be sent of carry at least in the said message and send the website available bandwidth value, sending data; Functional module two is according to the length of the said data to be sent of calculation of parameter of carrying in the said message, and it is returned to functional module one, carried out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent by functional module one;
Perhaps; Bandwidth value and the request function module two that functional module one confirms to send data according to the bandwidth value that sends data, formerly saidly be about to send the data length value and calculate and send the needed time of physical layer protocol data unit; Functional module two returns to functional module one with the said needed time of transmission physical layer protocol data unit after calculating and finishing; Functional module one in view of the above computing time parameter; Said computing time parameter and known time parameter relatively, when said computing time, parameter was smaller or equal to the known time parameter, functional module one saidly was about to send data length and packs according to former; Otherwise; Functional module one request function module two is calculated the length of said data to be sent; Functional module two calculates the length of said data to be sent and it is returned to functional module one, and functional module one is carried out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent.
When said indication information is data length information to be sent; Send the functional module two of website and further calculate the length of data to be sent, and the data length said to be sent that will obtain sends to functional module one according to the available bandwidth in the response frame of receiving station transmission; Functional module one is carried out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent.
Functional module two with the method that the length of said data to be sent returns to functional module one is:
Functional module two sends to functional module one through interlayer message with the length of said data to be sent.
Send website before sending data, this method further comprises:
Send website and send the frame that is used to preengage channel to receiving station, said reservation channel frame is used to indicate dispatching station point to support dynamic bandwidth or static bandwidth, the available bandwidth of indication transmission website and the channel booking time of transmitting one or more Frames;
Receive said reservation channel, said receiving station sends response frame to sending website, and said response frame is used to indicate the available bandwidth of receiving station;
Receive said response frame, the functional module two of said transmission website is sent indication information to functional module one.
Said functional module one is the media access control MAC layer entity, and said functional module two is physics PHY layer entities.
A kind of system that realizes that data are sent, this system comprises data message decision package, data processing unit; Wherein,
Said data message decision package is used for confirming to be about to send according to the indication information of functional module two length of data; It is one of following that said indication information comprises at least: the available bandwidth information of receiving station, data length information to be sent;
Said data processing unit is used for sending data according to the fixed said data length that is about to send of said data message decision package to receiving station.
When said indication information was the available bandwidth information of receiving station, said data message decision package was confirmed said when being about to send the length of data, is used for:
Available bandwidth information according to receiving station is estimated the said length that is about to send data;
The data length of said estimation is notified to said functional module two; Said functional module two is according to above-mentioned notice; Calculate said data of be about to sending through the physical layer service data length after filling and send the time that said physical layer protocol data unit needs; And with the physical layer service data length that calculates, and the time of sending physical layer protocol data unit and needing send to said data message decision package;
Said data message decision package is according to the Time Calculation time parameter of said transmission physical layer protocol data unit needs, and said computing time, parameter and known time parameter compared, and judged whether to reappraise the length of said data to be sent;
When the time parameter that calculates during smaller or equal to known time parameter, said data message decision package is packed according to the length that is about to send data of said estimation; When the time parameter that calculates during greater than known time parameter, estimate the said data length that sends of being about to again, be not more than known time parameter up to the time parameter that calculates.
When said indication information was the available bandwidth information of receiving station, said data message decision package was confirmed said when being about to send the length of data, is used for:
Send message, said message is used for the length that request function module two is calculated said data to be sent, bandwidth value, the former said data length value to be sent of carry at least in the said message and send the website available bandwidth value, sending data; Functional module two is according to the length of the said data to be sent of calculation of parameter of carrying in the said message; And it is returned to said data message decision package, carry out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent by the data message decision package;
Perhaps; Bandwidth value and the request function module two that said data message decision package confirm to send data according to the bandwidth value that sends data, formerly saidly be about to send the data length value and calculate and send the needed time of physical layer protocol data unit; Functional module two returns to said data message decision package with the said needed time of transmission physical layer protocol data unit after calculating and finishing; The data message decision package in view of the above computing time parameter; Said computing time, parameter and known time parameter compared; When said computing time, parameter was smaller or equal to the known time parameter, said data message decision package saidly was about to send data length and packs according to former; Otherwise; Said data message decision package request function module two is calculated the length of said data to be sent; Functional module two calculates the length of said data to be sent and it is returned to said data message decision package, and the data message decision package carries out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent.
When said indication information is data length information to be sent; The functional module two of sending website is further used for: the available bandwidth according in the response frame of receiving station transmission calculates the length of data to be sent, and the data length said to be sent that will obtain sends to said data message decision package; The data message decision package carries out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent.
When functional module two returns to said data message decision package with the length of said data to be sent, be used for:
Through interlayer message the length of said data to be sent is sent to said data message decision package.
Send website before sending data, be further used for:
Send the frame that is used to preengage channel to receiving station, said reservation channel frame is used to indicate dispatching station point to support dynamic bandwidth or static bandwidth, the available bandwidth of indication transmission website and the channel booking time of transmitting one or more Frames;
Receive said reservation channel, said receiving station sends response frame to sending website, and said response frame is used to indicate the available bandwidth of receiving station;
Receive said response frame, the functional module two of said transmission website is sent indication information to said data message decision package.
Said data message decision package equipment is in the MAC layer entity, and said functional module two is PHY layer entities.
The present invention realizes the method and system that data are sent; All can under the situation of supporting dynamic bandwidth, normally carry out data and send, the data that the time transmission of avoiding script on big bandwidth channel, to preengage finishes can't be sent situation about accomplishing and taken place in subscription time.
Description of drawings
Fig. 1 is a STA underlying protocol stack sketch map;
Fig. 2 is a RTS/CTS method for using sketch map;
Fig. 3 is the primitive schematic flow sheet of the embodiment of the invention one;
Fig. 4 is the primitive schematic flow sheet of the embodiment of the invention two;
Fig. 5 is the primitive schematic flow sheet of the embodiment of the invention three;
Fig. 6 is the general flow chart that the realization data of the embodiment of the invention are sent;
Fig. 7 is the system diagram that the realization data of the embodiment of the invention are sent.
Embodiment
In practical application, the MAC layer entity that sends website confirms to be about to send the length of data according to the indication information of the PHY layer entity that sends website; It is one of following that said indication information comprises at least: the available bandwidth information of receiving station, data length information to be sent.Afterwards, send website and can send data to receiving station according to fixed said data length.
Further; Send website before sending data, can send the frame that is used to preengage channel to receiving station, indication is therein sent website and is supported dynamic bandwidth or static bandwidth; The current available bandwidth of website is sent in indication, and the channel booking time of transmitting one or more Frames; Receive said be used to preengage the frame of channel after, receiving station sends response frame to sending website, indicates the current available bandwidth of receiving station therein; After receiving the response frame of said receiving station transmission, the PHY layer entity that sends website sends indication information to the MAC layer entity;
Further; When the indication information that sends to the MAC layer entity when the PHY layer entity that sends website is the available bandwidth information of receiving station; The MAC layer entity is judged the receiving station available bandwidth less than sending the website available bandwidth, and one of the mode that the MAC layer entity confirms to be about to send the length of data is: the MAC layer entity estimates to be about to send the length of data according to said available bandwidth information.Particularly, when the available bandwidth of receiving station was the N that sends the available bandwidth of website/M, the length that is about to send data was not more than the former N/M that is about to send the length of data; N and M are the integer greater than zero, and N is more than or equal to M;
Further; After the MAC layer entity is estimated to be about to send the length of data; Notify layer entity with the data length of estimating to PHY; The PHY layer entity calculates the physical layer service data length after the data process that is about to send is filled (padding), and sends the needed time of corresponding physical layer protocol data unit; The physical layer service data length that to calculate gained after the PHY layer entity calculates and finishes sends to the MAC layer entity with the transmission needed time of physical layer protocol data unit;
Further; The MAC layer entity is according to sending the needed Time Calculation time parameter of physical layer protocol data unit; This time parameter that is to say according to the data length of estimating that is about to send calculates the channel booking time that obtains; And compare with channel booking time of the frame that is used for channel booking that has sent; When the time parameter smaller or equal to known channel booking during the time, the length that the MAC layer entity sends data according to being about to of being calculated is packed (increasing the first-class operation of mac-layer protocol), carries out padding according to physical layer service data length; When the time parameter greater than channel booking during the time, estimation is about to the data length that sends again, till satisfying time parameter and being not more than the channel booking time.
Further; When the indication information that sends to the MAC layer entity when the PHY layer entity that sends website is the available bandwidth information of receiving station; The MAC layer entity confirm to be about to send data length mode two be: the MAC layer entity sends message; Said message is used to ask the PHY layer entity to calculate the length of data to be sent, carries bandwidth value, the former data length to be sent of the available bandwidth value that sends website, transmission data that the MAC layer entity is confirmed in the said message at least; Then the PHY layer entity is according to the length of the calculation of parameter data to be sent of carrying in the said message; And it is returned to the MAC layer entity; The MAC layer entity carries out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent; Satisfying data length requirement to be sent, and send the data to the PHY layer entity in view of the above;
Perhaps; The MAC layer entity confirms to send the bandwidth value of data; The MAC layer entity sends message; Request PHY layer entity is according to the bandwidth value that sends data and formerly be about to send data length and calculate and send the needed time of physical layer service data, and the PHY layer entity returns to the MAC layer entity with said time value after calculating and finishing, the MAC layer entity in view of the above computing time parameter; This time parameter that is to say according to the bandwidth value that sends data calculates the channel booking time that obtains; And compare with channel booking time of the frame that is used for channel booking that has sent, when the time parameter smaller or equal to known channel booking during the time, the MAC layer entity is about to send data length with packing data according to former; When the time parameter greater than channel booking during the time; The MAC layer entity sends message; Request PHY layer entity calculates the length of data to be sent, carries bandwidth value, the former data length to be sent of the available bandwidth value that sends website, transmission data that the MAC layer entity is confirmed in the said message at least; Then the PHY layer entity the length of data to be sent according to the calculation of parameter of carrying in the said message; And it is returned to the MAC layer entity; The MAC layer entity carries out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent; Satisfying data length requirement to be sent, and send the data to the PHY layer entity in view of the above;
Further; When the indication information that sends to the MAC layer entity when the PHY layer entity that sends website is a data length information to be sent; Bandwidth information (like available bandwidth) in the response frame that the PHY layer entity that sends website sends according to receiving station is calculated the length of data to be sent, and the length that will calculate the data to be sent of gained sends to the MAC layer entity; The MAC layer entity carries out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent, satisfying the length requirement of data to be sent, and sends the data to the PHY layer entity in view of the above;
Further, the PHY layer entity can send to the MAC layer entity with the length of data to be sent through interlayer message.
Visible by foregoing, the MAC layer entity that sends website can confirm to be about to send the length of data according to the indication information of PHY layer entity, and sends data to receiving station according to determined data length; Thereby can when supporting dynamic bandwidth,, also can make data to be sent satisfy the channel booking time even data transmission bandwidth changes.
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 explanation and explains the present invention, and be not used in qualification the present invention.Under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.And according to different practical application scenes, the bandwidth of website can comprise: 20MHz, 40MHz, continuous perhaps discontinuous 80MHz, 120MHz, continuous perhaps discontinuous 160MHz etc.
Embodiment one
In the present embodiment, the indication information that the PHY layer sends to the MAC layer is the available bandwidth information of receiving station.
Particularly,, suppose that STA1 and STA2 are that the bandwidth ability that maximum is supported is the website of 160MHz, be supported in and use RTS/CTS to carry out the dynamic bandwidth negotiation before data are sent in conjunction with Fig. 3.Data to STA2 are arranged in the buffer queue of STA1; Then STA1 at first passes through the Channel Detection 80MHz free time; With bandwidth, the modulation system of data, the parameters such as length that are about to send data send to PHY through primitive PLME-TXTIME. request; The PHY layer calculates the length of PHY layer service data unit PSDU; And on wireless medium, send the time T XTIME that corresponding PPDU needs, and confirm that through PLME-TXTIME. primitive returns to MAC with parameter, the MAC layer carries out necessary padding according to PSDU length to MPDU.MAC also sends to PHY with CTS and to the parameter of the response frame of Frame through primitive PLME-TXTIME. request; The time that PHY calculating transmission CTS and response frame need; And confirm that through PLME-TXTIME. primitive returns to MAC, the MAC layer uses TXTIME, send the CTS and the time of response frame and the Time Calculation of interFrameGap obtains the channel booking time (referring to Fig. 2).
STA1 sends RTS on the 20MHz of 4 free time channel, the available bandwidth that carries STA1 among the RTS is 80MHz, supports dynamic bandwidth and channel booking time.STA2 receives RTS, resolves and learns that STA1 supports dynamic bandwidth, then replys CTS in main channel, also detects in the certain hour before receiving RTS to replying CTS on the auxilliary channel of idle.Carrying the current available bandwidth of STA2 among the CTS that replys, for example is 40MHz.
After STA1 receives CTS; Parsing learns that the STA2 available bandwidth is 40MHz; The then original frame exchange of estimating to accomplish in the 80MHz bandwidth use channel booking time needs to adjust the length that is about to send data because bandwidth diminishes, to guarantee in channel time, the accomplishing frame exchange.STA1 can handle as follows:
The PHY layer of STA1 sends to the MAC layer with the available bandwidth information of the STA2 interlayer primitive (like the PHY-RXSTART. indication) through PHY and MAC, and the MAC layer confirms that according to the available bandwidth information of STA2 new being about to send the length of data.MAC at first estimates to be about to send the length of data according to the available bandwidth information of STA2; A kind of computational methods are: suppose that it is L1 that MAC layer buffer memory Central Plains is about to send data length; Since the available bandwidth of STA2 be STA1 available bandwidth 1/2, the length that data length L2 is sent in then new being about to is not more than 1/2 of L1.After the MAC layer is estimated to finish, send primitive PLME-TXTIME. request to the PHY layer, with request PHY layer computational length be the data (MPDU) of L2 through the new PSDU length after filling, and send the corresponding needed time T XTIME of PPDU.The new PSDU length and the TXTIME that will calculate gained after PHY calculates and finishes send to MAC.MAC is according to TXTIME parameter computing time; And with the channel booking time ratio, if be not more than the channel booking time, then the data length L2 that is about to send that estimates of MAC meets the demands; MAC packs to the data of L2 length according to new PSDU length; If desired, also will carry out padding, send the data to PHY then.If time parameter is greater than the channel booking time one, then MAC need reappraise the value of L2, and repeats said process, is not more than the channel booking time up to satisfying time parameter.
Follow-up, MAC gives the PHY layer with new transmission parameter and data passes, and the PHY layer carries out data and sends in the time of reservation.
Embodiment two
In the present embodiment, the indication information that the PHY layer sends to the MAC layer is the length of data to be sent.
Identical with embodiment one, in conjunction with Fig. 4, STA1 and STA2 are that maximum bandwidth capability is the website of 160MHz, are supported in to use RTS/CTS to carry out the dynamic bandwidth negotiation before data are sent.STA1 at first please calculate the length of PHY layer service data unit PSDU by the PHY layer through primitive PLME-TXTIME. request, and on wireless medium, sends the time T XTIME that this PPDU needs, and uses TXTIME to calculate the channel time that RTS need preengage.STA1 sends RTS on 4 20MHz channels, the available bandwidth that carries STA1 among the RTS is 80MHz, and supports dynamic bandwidth.The available bandwidth that carries STA2 among the CTS that STA2 replys is 40MHz.Then STA1 need adjust the length that is about to send data, to guarantee in channel time, the accomplishing frame exchange.STA1 can handle as follows:
Indicated available bandwidth calculates the length DYN Length of the PSDU of suggestion transmission in the PHY layer basis frame of receiving, and this length is sent to the MAC layer.The mode of this parameter of PHY course MAC layer transmission can be to be carried in the PHY-RXSTART. indication, perhaps sends through a new primitive.The examples of parameters of DYN Length is seen table 1.
Table 1
Because the PHY layer can't discern whether the frame of receiving is the CTS that the RTS that self sends is responded, therefore in practical application, the PHY layer can carry out simple process; Promptly as long as the bandwidth in the frame behind transmit frame, received during less than the bandwidth in the last transmit frame; Just calculate DYN Length and pass to the MAC layer, the MAC layer judges whether the frame of receiving is the response CTS to the RTS that oneself sends, if; The data length packing MSDU that then advises according to the PHY layer; If desired, MAC will carry out padding, to satisfy DYN Length requirement.
Afterwards, the MAC layer will send parameter and data passes is given the PHY layer, and the PHY layer sends.
Embodiment three
In the present embodiment, the indication information that the PHY layer sends to the MAC layer is the available bandwidth information of receiving station.
In conjunction with Fig. 5, STA1 and STA2 are that maximum bandwidth capability is the website of 160MHz, are supported in to use RTS/CTS to carry out the dynamic bandwidth negotiation before data are sent.STA1 sends multiframe continuously to STA2; Then STA1 at first asks the PHY layer to calculate the length of each PSDU through primitive PLME-TXTIME. request; And on wireless medium, send the time T XTIME that each PPDU needs, and use all TXTIME, send CTS and the time and the interFrameGap of the response frame of Frame calculated the channel booking time among the RTS.STA1 sends RTS on 4 20MHz channels, the available bandwidth that carries STA1 among the RTS is 80MHz, and supports dynamic bandwidth.The available bandwidth that carries STA2 among the CTS that STA2 replys is 40MHz.Then STA1 need adjust the length that is about to send data, to guarantee in channel time, the accomplishing frame exchange.STA1 can handle as follows:
The MAC of STA1 judges that the frame of receiving is the response CTS to the RTS that self sends, and the available bandwidth (40MHz) supported of STA2 is during less than own available bandwidth (80MHz), and the MAC of STA1 confirms the bandwidth value of transmission data, for example is 40MHz.
The MAC of STA1 sends primitive to PHY, wherein carries transmit leg available bandwidth value (80MHz) at least, sends bandwidth value (40MHz), the former data length to be sent of data, calculates the data length DYN Length of suggestion with request PHY layer; The length that to calculate gained after the PHY layer calculates and finishes returns to the MAC layer, and the MAC layer if desired, will carry out padding, to satisfy DYN Length requirement according to DYN Length packing MSDU.
Particularly, when single user adopted BCC (binary system circular convolution sign indicating number) coded system, the computational methods of DYN Length can adopt following method:
At first adopt the corresponding N of transmit leg available bandwidth value
DBPS *(bit number in a symbol), former data length to be sent calculate Nsym (Nsym is-symbol number), then, calculate DYN Length through formula:
N
DBPSBe the bit number that sends in the corresponding symbol of the bandwidth value of data, N
ESIt is BCC encoder number.
Afterwards, the MAC layer will send parameter and data passes is given the PHY layer, and the PHY layer sends.
Embodiment four
In the present embodiment, the indication information that the PHY layer sends to the MAC layer is the available bandwidth information of receiving station.
STA1 and STA2 are that maximum bandwidth capability is the website of 160MHz, are supported in to use RTS/CTS to carry out the dynamic bandwidth negotiation before data are sent.STA1 sends multiframe continuously to STA2; Then STA1 at first asks the PHY layer to calculate the length of each PSDU through primitive PLME-TXTIME. request; And on wireless medium, send the time T XTIME that each PPDU needs, and use all TXTIME, send CTS and the time and the interFrameGap of the response frame of Frame calculated the channel booking time among the RTS.STA1 sends RTS on 4 20MHz channels, the available bandwidth that carries STA1 among the RTS is 80MHz, and supports dynamic bandwidth.The available bandwidth that carries STA2 among the CTS that STA2 replys is 40MHz.Then STA1 need adjust the length that is about to send data, to guarantee in channel time, the accomplishing frame exchange.STA1 can handle as follows:
The MAC of STA1 judges that the frame of receiving is the response CTS to the RTS that self sends, and the available bandwidth (40MHz) supported of STA2 is during less than own available bandwidth (80MHz), and the MAC of STA1 confirms the bandwidth value of transmission data, for example is 40MHz.
The MAC of STA1 sends message; Request PHY sends the needed time of corresponding PSDU according to the length computation of first MPDU among the bandwidth value (40MHz) that sends data and a plurality of MPDU to be sent; PHY returns to MAC with said time value after calculating and finishing; The MAC layer entity is according to this of parameter computing time time, and compares with the channel booking time, when the time parameter smaller or equal to channel booking during the time; MAC can send first MPDU according to raw footage and give PHY, and this Time Bandwidth diminishes but sends first MPDU according to raw footage and can not surpass the former channel booking time; When the time parameter greater than channel booking during the time; MAC sends primitive to PHY; Wherein carry transmit leg available bandwidth value (80MHz) at least, send bandwidth value (40MHz), the former data length to be sent of data, calculate the data length DYN Length of suggestion with request PHY layer; The length that to calculate gained after the PHY layer calculates and finishes returns to the MAC layer, and the MAC layer if desired, will carry out padding, to satisfy DYN Length requirement according to DYN Length packing MSDU.
Afterwards, the MAC layer will send parameter and data passes is given the PHY layer, and the PHY layer sends.
Can know that in conjunction with above technical description and each embodiment the present invention realizes that the operation thinking that data are sent can represent as shown in Figure 6.Referring to Fig. 6, Fig. 6 is the general flow chart that the realization data of the embodiment of the invention are sent, and this flow process may further comprise the steps:
Step 610: the MAC layer entity that sends website confirms to be about to send the length of data according to the indication information of PHY layer entity, and it is one of following that said indication information comprises at least: the available bandwidth information of receiving station, data length information to be sent.
Step 620: send website and send data to receiving station according to fixed said data length.
In order to guarantee that above technical description and each embodiment can realize smoothly, can carry out setting as shown in Figure 7.Referring to Fig. 7, Fig. 7 is the system diagram that the realization data of the embodiment of the invention are sent, and this system comprises continuous data message decision package, data processing unit.The data message decision package can be arranged in the MAC layer entity that sends website or independent the setting, and data processing unit can be arranged at and send in the website or independent the setting.
In practical application, the data message decision package can confirm to be about to send the length of data according to the indication information of PHY layer entity, and it is one of following that said indication information comprises at least: the available bandwidth information of receiving station, data length information to be sent.Data processing unit then can send data to receiving station according to the fixed said data length of said data message decision package.
Need to prove; No matter be in method or the system; The function that MAC layer entity and PHY layer entity can be realized also can realize by other functional module, as: can be the functional module one that comprises the MAC layer entity, and can be the functional module two that comprises the PHY layer entity.
Visible in sum; No matter be method or system; The present invention realizes the technology that data are sent; All can under the situation of supporting dynamic bandwidth, normally carry out data and send, avoid script adopting the time of RTS reservation to send the data that finish can't be sent completion in subscription time situation generation on the bandwidth channel greatly.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. method that realizes that data are sent is characterized in that this method comprises:
The functional module one of sending website confirms to be about to send the length of data according to the indication information of functional module two; It is one of following that said indication information comprises at least: the available bandwidth information of receiving station, data length information to be sent;
Send website and send data to receiving station according to the fixed said data length that is about to send.
2. method according to claim 1 is characterized in that, when said indication information was the available bandwidth information of receiving station, functional module one confirmed that the said method that is about to send the length of data is:
Said functional module one is estimated the said length that is about to send data according to the available bandwidth information of receiving station;
Said functional module one notifies the data length of said estimation to said functional module two; Said functional module two is according to above-mentioned notice; Calculate said data of be about to sending through the physical layer service data length after filling and send the time that said physical layer protocol data unit needs; And with the physical layer service data length that calculates, and the time of sending physical layer protocol data unit and needing send to above-mentioned functions module one;
Said functional module one is according to the Time Calculation time parameter of said transmission physical layer protocol data unit needs, and said computing time, parameter and known time parameter compared, and judged whether to reappraise the length of said data to be sent; When the time parameter that calculates during smaller or equal to known time parameter, functional module one is packed according to the length that is about to send data of said estimation; When the time parameter that calculates during greater than known time parameter, estimate the said data length that sends of being about to again, be not more than known time parameter up to the time parameter that calculates.
3. method according to claim 1 is characterized in that, when said indication information was the available bandwidth information of receiving station, functional module one confirmed that the said method that is about to send data length is:
Functional module one is sent message, and said message is used for the length that request function module two is calculated said data to be sent, bandwidth value, the former said data length value to be sent of carry at least in the said message and send the website available bandwidth value, sending data; Functional module two is according to the length of the said data to be sent of calculation of parameter of carrying in the said message, and it is returned to functional module one, carried out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent by functional module one;
Perhaps; Bandwidth value and the request function module two that functional module one confirms to send data according to the bandwidth value that sends data, formerly saidly be about to send the data length value and calculate and send the needed time of physical layer protocol data unit; Functional module two returns to functional module one with the said needed time of transmission physical layer protocol data unit after calculating and finishing; Functional module one in view of the above computing time parameter; Said computing time parameter and known time parameter relatively, when said computing time, parameter was smaller or equal to the known time parameter, functional module one saidly was about to send data length and packs according to former; Otherwise; Functional module one request function module two is calculated the length of said data to be sent; Functional module two calculates the length of said data to be sent and it is returned to functional module one, and functional module one is carried out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent.
4. method according to claim 1; It is characterized in that; When said indication information is data length information to be sent; Send the functional module two of website and further calculate the length of data to be sent, and the data length said to be sent that will obtain sends to functional module one according to the available bandwidth in the response frame of receiving station transmission; Functional module one is carried out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent.
5. according to each described method of claim 2 to 4, it is characterized in that functional module two with the method that the length of said data to be sent returns to functional module one is:
Functional module two sends to functional module one through interlayer message with the length of said data to be sent.
6. according to each described method of claim 1 to 4, it is characterized in that send website before sending data, this method further comprises:
Send website and send the frame that is used to preengage channel to receiving station, said reservation channel frame is used to indicate dispatching station point to support dynamic bandwidth or static bandwidth, the available bandwidth of indication transmission website and the channel booking time of transmitting one or more Frames;
Receive said reservation channel, said receiving station sends response frame to sending website, and said response frame is used to indicate the available bandwidth of receiving station;
Receive said response frame, the functional module two of said transmission website is sent indication information to functional module one.
7. method according to claim 1 is characterized in that, said functional module one is the media access control MAC layer entity, and said functional module two is physics PHY layer entities.
8. a system that realizes that data are sent is characterized in that this system comprises data message decision package, data processing unit; Wherein,
Said data message decision package is used for confirming to be about to send according to the indication information of functional module two length of data; It is one of following that said indication information comprises at least: the available bandwidth information of receiving station, data length information to be sent;
Said data processing unit is used for sending data according to the fixed said data length that is about to send of said data message decision package to receiving station.
9. system according to claim 8 is characterized in that, when said indication information was the available bandwidth information of receiving station, said data message decision package was confirmed said when being about to send the length of data, is used for:
Available bandwidth information according to receiving station is estimated the said length that is about to send data;
The data length of said estimation is notified to said functional module two; Said functional module two is according to above-mentioned notice; Calculate said data of be about to sending through the physical layer service data length after filling and send the time that said physical layer protocol data unit needs; And with the physical layer service data length that calculates, and the time of sending physical layer protocol data unit and needing send to said data message decision package;
Said data message decision package is according to the Time Calculation time parameter of said transmission physical layer protocol data unit needs, and said computing time, parameter and known time parameter compared, and judged whether to reappraise the length of said data to be sent;
When the time parameter that calculates during smaller or equal to known time parameter, said data message decision package is packed according to the length that is about to send data of said estimation; When the time parameter that calculates during greater than known time parameter, estimate the said data length that sends of being about to again, be not more than known time parameter up to the time parameter that calculates.
10. system according to claim 8 is characterized in that, when said indication information was the available bandwidth information of receiving station, said data message decision package was confirmed said when being about to send the length of data, is used for:
Send message, said message is used for the length that request function module two is calculated said data to be sent, bandwidth value, the former said data length value to be sent of carry at least in the said message and send the website available bandwidth value, sending data; Functional module two is according to the length of the said data to be sent of calculation of parameter of carrying in the said message; And it is returned to said data message decision package, carry out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent by the data message decision package;
Perhaps; Bandwidth value and the request function module two that said data message decision package confirm to send data according to the bandwidth value that sends data, formerly saidly be about to send the data length value and calculate and send the needed time of physical layer protocol data unit; Functional module two returns to said data message decision package with the said needed time of transmission physical layer protocol data unit after calculating and finishing; The data message decision package in view of the above computing time parameter; Said computing time, parameter and known time parameter compared; When said computing time, parameter was smaller or equal to the known time parameter, said data message decision package saidly was about to send data length and packs according to former; Otherwise; Said data message decision package request function module two is calculated the length of said data to be sent; Functional module two calculates the length of said data to be sent and it is returned to said data message decision package, and the data message decision package carries out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent.
11. system according to claim 8; It is characterized in that; When said indication information is data length information to be sent; The functional module two of sending website is further used for: the available bandwidth according in the response frame of receiving station transmission calculates the length of data to be sent, and the data length said to be sent that will obtain sends to said data message decision package; The data message decision package carries out the packing and/or the filling of MAC layer service data unit according to the length of said data to be sent.
12. according to each described system of claim 9 to 11, it is characterized in that, when functional module two returns to said data message decision package with the length of said data to be sent, be used for:
Through interlayer message the length of said data to be sent is sent to said data message decision package.
13. to 11 each described systems, it is characterized in that according to Claim 8, send website before sending data, be further used for:
Send the frame that is used to preengage channel to receiving station, said reservation channel frame is used to indicate dispatching station point to support dynamic bandwidth or static bandwidth, the available bandwidth of indication transmission website and the channel booking time of transmitting one or more Frames;
Receive said reservation channel, said receiving station sends response frame to sending website, and said response frame is used to indicate the available bandwidth of receiving station;
Receive said response frame, the functional module two of said transmission website is sent indication information to said data message decision package.
14. system according to claim 8 is characterized in that, said data message decision package equipment is in the MAC layer entity, and said functional module two is PHY layer entities.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873185A (en) * | 2012-12-10 | 2014-06-18 | 工业和信息化部电信传输研究所 | Data transmission method based on beam forming |
| WO2015131402A1 (en) * | 2014-03-07 | 2015-09-11 | 华为技术有限公司 | Data communication method, station and system |
| CN105874847A (en) * | 2013-12-25 | 2016-08-17 | 华为技术有限公司 | Information sending method and apparatus |
| WO2017008306A1 (en) * | 2015-07-16 | 2017-01-19 | 华为技术有限公司 | Method, apparatus and system for transmitting data carrying indication information |
| WO2017016338A1 (en) * | 2015-07-24 | 2017-02-02 | 中兴通讯股份有限公司 | Transmission control method and apparatus for avoiding data collision |
| CN107210847A (en) * | 2015-02-12 | 2017-09-26 | 华为技术有限公司 | A kind of channel competition method and relevant apparatus |
| WO2018035801A1 (en) * | 2016-08-25 | 2018-03-01 | 华为技术有限公司 | Message transmission method, related device, and system |
| CN107925852A (en) * | 2015-08-13 | 2018-04-17 | 株式会社Ntt都科摩 | User apparatus and data transmission method for uplink |
| CN112533252A (en) * | 2016-03-11 | 2021-03-19 | 华为技术有限公司 | Channel access method and station |
| CN111431663B (en) * | 2015-07-16 | 2024-04-26 | 华为技术有限公司 | Data transmission method, device and system carrying indication information |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050114489A1 (en) * | 2003-11-24 | 2005-05-26 | Yonge Lawrence W.Iii | Medium access control layer that encapsulates data from a plurality of received data units into a plurality of independently transmittable blocks |
| CN1964275A (en) * | 2005-11-08 | 2007-05-16 | 中兴通讯股份有限公司 | A realization method to dynamically change maximum length of bandwidth request |
| CN101043294A (en) * | 2007-03-15 | 2007-09-26 | 华为技术有限公司 | Slicing method for data frames and optical network unit |
| CN101129024A (en) * | 2005-02-22 | 2008-02-20 | 英特尔公司 | Performing network medium reservation in a wireless network and section or aggregation of MAC protocol data unit |
| CN101217466A (en) * | 2007-12-28 | 2008-07-09 | 中国科学院计算技术研究所 | A data processing method and processing device of wireless network media access control system |
| CN101222296A (en) * | 2008-01-31 | 2008-07-16 | 上海交通大学 | Self-adapting transmission method and system in ascending honeycomb video communication |
| CN101242341A (en) * | 2007-02-07 | 2008-08-13 | 华为技术有限公司 | A packet dispatching method and device |
-
2011
- 2011-01-13 CN CN201110006548.3A patent/CN102595517B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050114489A1 (en) * | 2003-11-24 | 2005-05-26 | Yonge Lawrence W.Iii | Medium access control layer that encapsulates data from a plurality of received data units into a plurality of independently transmittable blocks |
| CN101129024A (en) * | 2005-02-22 | 2008-02-20 | 英特尔公司 | Performing network medium reservation in a wireless network and section or aggregation of MAC protocol data unit |
| CN1964275A (en) * | 2005-11-08 | 2007-05-16 | 中兴通讯股份有限公司 | A realization method to dynamically change maximum length of bandwidth request |
| CN101242341A (en) * | 2007-02-07 | 2008-08-13 | 华为技术有限公司 | A packet dispatching method and device |
| CN101043294A (en) * | 2007-03-15 | 2007-09-26 | 华为技术有限公司 | Slicing method for data frames and optical network unit |
| CN101217466A (en) * | 2007-12-28 | 2008-07-09 | 中国科学院计算技术研究所 | A data processing method and processing device of wireless network media access control system |
| CN101222296A (en) * | 2008-01-31 | 2008-07-16 | 上海交通大学 | Self-adapting transmission method and system in ascending honeycomb video communication |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873185A (en) * | 2012-12-10 | 2014-06-18 | 工业和信息化部电信传输研究所 | Data transmission method based on beam forming |
| CN105874847A (en) * | 2013-12-25 | 2016-08-17 | 华为技术有限公司 | Information sending method and apparatus |
| CN105874847B (en) * | 2013-12-25 | 2019-10-25 | 华为技术有限公司 | Method for sending information and device |
| US10091782B2 (en) | 2014-03-07 | 2018-10-02 | Huawei Technologies Co., Ltd. | Data communication method, station, and system |
| WO2015131402A1 (en) * | 2014-03-07 | 2015-09-11 | 华为技术有限公司 | Data communication method, station and system |
| CN107210847B (en) * | 2015-02-12 | 2020-07-24 | 华为技术有限公司 | Channel competition method and related device |
| CN107210847A (en) * | 2015-02-12 | 2017-09-26 | 华为技术有限公司 | A kind of channel competition method and relevant apparatus |
| CN111431663A (en) * | 2015-07-16 | 2020-07-17 | 华为技术有限公司 | Data transmission method, device and system carrying indication information |
| CN107710820B (en) * | 2015-07-16 | 2020-03-20 | 华为技术有限公司 | Data transmission method, device and system carrying indication information |
| CN111431663B (en) * | 2015-07-16 | 2024-04-26 | 华为技术有限公司 | Data transmission method, device and system carrying indication information |
| WO2017008306A1 (en) * | 2015-07-16 | 2017-01-19 | 华为技术有限公司 | Method, apparatus and system for transmitting data carrying indication information |
| CN107710820A (en) * | 2015-07-16 | 2018-02-16 | 华为技术有限公司 | Carry data transmission method, the apparatus and system of configured information |
| US10624129B2 (en) | 2015-07-24 | 2020-04-14 | Zte Corporation | Transmission control method and apparatus for avoiding data collision |
| WO2017016338A1 (en) * | 2015-07-24 | 2017-02-02 | 中兴通讯股份有限公司 | Transmission control method and apparatus for avoiding data collision |
| CN107925852A (en) * | 2015-08-13 | 2018-04-17 | 株式会社Ntt都科摩 | User apparatus and data transmission method for uplink |
| CN112533252A (en) * | 2016-03-11 | 2021-03-19 | 华为技术有限公司 | Channel access method and station |
| CN112533252B (en) * | 2016-03-11 | 2022-07-12 | 华为技术有限公司 | Channel access method and station |
| CN108702653B (en) * | 2016-08-25 | 2020-02-21 | 华为技术有限公司 | Message sending method, related equipment and system |
| CN108702653A (en) * | 2016-08-25 | 2018-10-23 | 华为技术有限公司 | A kind of message method, relevant device and system |
| US10743295B2 (en) | 2016-08-25 | 2020-08-11 | Huawei Technologies Co., Ltd. | Message sending method, related device, and system |
| WO2018035801A1 (en) * | 2016-08-25 | 2018-03-01 | 华为技术有限公司 | Message transmission method, related device, and system |
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