CN103095429A - Implement method and device for data validation at receiving end and sending end - Google Patents
Implement method and device for data validation at receiving end and sending end Download PDFInfo
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- CN103095429A CN103095429A CN2011103458840A CN201110345884A CN103095429A CN 103095429 A CN103095429 A CN 103095429A CN 2011103458840 A CN2011103458840 A CN 2011103458840A CN 201110345884 A CN201110345884 A CN 201110345884A CN 103095429 A CN103095429 A CN 103095429A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
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Abstract
The invention discloses an implement method and a device for data validation at a receiving end and a sending end. The implement method comprises the following steps: receiving frames sent by one or a plurality of sending end sites, sending and confirming information in a multicast or a broadcast mode, and confirming the frames which are successfully received. Due to the fact that the information is sent and confirmed in the multicast or the broadcast mode, uniform confirming for a plurality of sites are achieved, and possibility is provided for reducing expense in receiving end confirmation, and effects that efficiency is improved and expenses is lowered when a plurality of sending end sites are simultaneously confirmed are particularly obvious.
Description
Technical field
The present invention relates to wireless communication technology, relate in particular to implementation method and the device of a kind of receiving terminal and transmitting terminal data validation.
Background technology
WLAN (wireless local area network) (Wireless Local Area Net, be called for short WLAN) be a kind ofly follow international Institute of Electrical and Electric Engineers (Institute of Electrical and Electronics Engineers is called for short IEEE) 802.11 agreements, with the network system of electromagnetic wave as transmission medium.
The basic framework of wlan network system comprises a plurality of websites (Station, be called for short STA), realizes radio communication between each website based on electromagnetic wave.Between each website, the communication of physical layer all realizes based on media access control (Media Access Control is called for short MAC) layer protocol.Because the communication between website is wanted timesharing and is shared same channel, namely at synchronization, can only have a website to use channel, be the website allocated channel so mac-layer protocol need to adopt certain mechanism, such as scheduling mechanism, competition mechanism etc., thus realize that website is to the time division multiplexing of channel.
Because the transmission on wireless medium easily makes a mistake, so prior art has been introduced low delay, other retransmission mechanism of link level.Retransmission mechanism allows those not have the frame of the correct demodulation of receiving end website to be resend by the transmitting terminal website.For determining whether the receiving terminal website correctly receives frame, prior art has also been introduced affirmation mechanism, namely when the receiving terminal website correctly receives the frame that sends to self, just with the form that sends an acknowledgement frame (Acknowledgment is called for short ACK) send one timely, sure confirmation.When the transmitting terminal website is not received the ACK frame, it supposes that this frame is not correctly received, and can retransmit this frame.
Yet in realizing research process of the present invention, the inventor finds that still there is the problem that efficient is low, overhead is large in existing affirmation mechanism.And raising the efficiency, reduce expense is also to develop at present one of target of constantly pursuing in wireless communication procedure.
Summary of the invention
The embodiment of the present invention provides implementation method and the device of a kind of receiving terminal and transmitting terminal data validation, to improve the efficient of affirmation mechanism, reduces overhead.
The embodiment of the present invention provides a kind of implementation method of receiving terminal data validation, comprising:
The frame that reception sends from one or more transmitting terminal websites;
Form with multicast or broadcasting sends acknowledge message, and the frame that successfully receives is confirmed.
The embodiment of the present invention also provides a kind of implementation method of transmitting terminal data validation, comprising:
Receive the confirmation message that the receiving terminal website sends with broadcasting or multicast form;
Confirm according to described acknowledge message whether the frame that this website sends is successfully received.
The embodiment of the present invention also provides a kind of implement device of receiving terminal data validation, comprising:
The frame receiver module is used for receiving the frame that sends from one or more transmitting terminal websites;
The frame acknowledgment module is used for sending acknowledge message with the form of multicast or broadcasting, and the frame that successfully receives is confirmed.
The embodiment of the present invention provides again a kind of implement device of transmitting terminal data validation, comprising:
The message sink module is used for receiving the confirmation message that the receiving terminal website sends with broadcasting or multicast form;
The confirmation of receipt module is used for confirming according to described acknowledge message whether the frame that this website sends is successfully received.
the implementation method of the receiving terminal of the embodiment of the present invention and transmitting terminal data validation and device, by sending acknowledge message with multicast or the forms of broadcasting, realized multi-site is unified to confirm, no matter be only to confirm a transmitting terminal website or confirm simultaneously the frame that a plurality of transmitting terminal websites send according to actual conditions, the mode of each transmitting terminal website being confirmed one by one than prior art, the technical scheme of the embodiment of the present invention all confirms that for reducing the receiving terminal website expense provides possibility, and when confirming at the same time a plurality of transmitting terminal website, raise the efficiency, the effect that reduces expense is particularly evident.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the network architecture schematic diagram that is applicable to the wlan system of the embodiment of the present invention;
The flow chart of the implementation method of the receiving terminal data validation that Fig. 2 provides for the embodiment of the present invention one;
The frame sequential schematic diagram of the implementation method of the receiving terminal data validation that Fig. 3 provides for the embodiment of the present invention two;
Fig. 4 A by in the embodiment of the present invention two the frame format schematic diagram of use acknowledgement frame;
Fig. 4 B is the form schematic diagram of frame control field in Fig. 4 A acknowledgement frame;
Fig. 5 is the frame format schematic diagram of the website association identification in the embodiment of the present invention two acknowledgement frames;
Fig. 6 is the frame format schematic diagram of the website MAC Address in the embodiment of the present invention two acknowledgement frames;
The frame sequential schematic diagram of the implementation method of the receiving terminal data validation that Fig. 7 provides for the embodiment of the present invention three;
Fig. 8 by in the embodiment of the present invention three the frame format schematic diagram of use acknowledgement frame;
Fig. 9 is the frame format schematic diagram of the site identity in the embodiment of the present invention three acknowledgement frames;
The frame sequential schematic diagram of the implementation method of the receiving terminal data validation that Figure 10 provides for the embodiment of the present invention five;
The flow chart of the implementation method of the transmitting terminal data validation that Figure 11 provides for the embodiment of the present invention six;
The structural representation of the implement device of the receiving terminal data validation that Figure 12 provides for the embodiment of the present invention eight;
The structural representation of the implement device of the transmitting terminal data validation that Figure 13 provides for the embodiment of the present invention nine.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the present invention provides respectively implementation method and the device of receiving terminal and transmitting terminal data validation, and its technical scheme typically is applicable to the wlan network system.Fig. 1 is the network architecture schematic diagram that is applicable to the wlan system of the embodiment of the present invention, as shown in Figure 1, wlan system typically is comprised of a plurality of STA, wherein, within being in a certain particular coverage, and a plurality of STA with certain association can form the element of WLAN, i.e. Basic Service Set (Basic Service Set is called for short BSS).According to organizational form, BSS can be divided into multiple.The most basic correlation form is a plurality of STA direct communications mutually in an ad-hoc network, and this is called as independently Basic Service Set (Independent BSS is called for short IBSS), as the BSS1 in Fig. 1.A plurality of STA are by access point (the Access Point of a full-time administrative BSS, be called for short AP) when being associated, the BSS that is based upon the AP periphery is called the BSS with infrastructure, in fact AP wherein is a central STA, and communicating by letter between the MAC layer communication mode of AP and other STA and STA is identical in fact.BSS with infrastructure can be interconnected by distributed system (Distributed System is called for short DS) by AP separately, consists of the BSS (Extend BSS is called for short ESS) of an expansion, as the BSS2 in Fig. 1 and BSS3.
The technical scheme of the embodiment of the present invention typically is applicable to the MAC layer communication between website arbitrarily in the wlan network system, certainly, the embodiment of the present invention is not limited to WLAN, and can also be applicable to other needs to carry out in the radio communication system of affirmation mechanism between receiving terminal and transmitting terminal.
Embodiment one
The flow chart of the implementation method of the receiving terminal data validation that Fig. 2 provides for the embodiment of the present invention one, the present embodiment are specially in affirmation mechanism by the performed method of receiving terminal website, can comprise the steps:
The present embodiment can be applicable in wlan system shown in Figure 1, realizes the confirmation mechanism between two or more websites.When wherein any one website was as the receiving terminal website, it was after the frame that successfully receives one or more transmitting terminal websites transmissions, and unification is confirmed with the same acknowledge message of form transmission of multicast or broadcasting to each transmitting terminal website.The form of so-called multicast or broadcasting sends, and namely the reception object of this acknowledge message is a plurality of websites.One multicast group can be set, and being included in a website in multicast group can arrange according to demand, and for example, a plurality of websites in the coverage of a certain region can form a multicast group, as the transmission object of acknowledge message.
Adopt the technical scheme of the present embodiment, a receiving terminal website is unified to confirm to the frame that successfully receives from a plurality of transmitting terminal websites in the transmitting time of determining.Although in practical application, when possible receiving terminal website arrives in the transmitting time of determining, only successfully receive the frame that a transmitting terminal website sends, even may successfully not receive a frame, but still can adopt the technical scheme of the present embodiment, in the mode of broadcasting or multicast, acknowledge message is sent to a plurality of other websites.
No matter be only to confirm a transmitting terminal website or can confirm simultaneously the frame that a plurality of transmitting terminal websites send according to actual conditions, receive immediately the mode of immediately each transmitting terminal website being confirmed one by one than prior art, the technical scheme of the present embodiment all confirms that for reducing the receiving terminal website expense provides possibility, and when at the same time a plurality of transmitting terminal websites being confirmed, the present embodiment is confirmed the effect of raising the efficiency, reduce expense particularly evident with multicast or broadcast mode.
In the technical scheme of above-described embodiment, definite mode that the receiving terminal website sends the transmitting time of acknowledge message can have multiple.
For example, can determine that periodic a series of time point or time period are as each unified transmitting time that sends acknowledge message according to the fixed cycle.The transmitting time of periodically determining can network at each website and mutually consults or inform when connecting, in order to can unify transmitting-receiving.
Perhaps, can be before the receiving terminal website send acknowledge message with the form of multicast or broadcasting, further to the transmitting time of other website notification acknowledgement.Be the receiving terminal website each send acknowledge message before, notify this will send the transmitting time of acknowledge message.This transmitting time can be absolute time point or absolute time section, perhaps also can be relative point in time or relative time section.Time period can be used for notice transmitting terminal website monitored within this time period, obtained acknowledge message with wait.Relative point in time or relative time section can be notice transmitting terminal websites with respect to time point after a certain time point or time period confirmation of receipt message, for example reception afterwards of one section relative time receiving this notice after.
Under the mechanism that adopts above-mentioned notice transmitting time, the transmitting time of this acknowledge message can arrange more neatly.
Wherein a kind of mode is: the transmitting time that sends this acknowledge message can be in a plurality of times with fixed cycle.Adopting the mode of periodically confirming, can be to obtain the transmitting time of this acknowledge message from a series of fixed transmitting times.
Perhaps, another kind of mode is: the transmitting time that sends this acknowledge message is the interim time of determining.Can set certain transmitting time and determine strategy, according to requirements set, for example with random definite strategy, the provisional random transmitting time of determining to send acknowledge message, notice is to other websites.
On the basis of adopting the transmitting time informing mechanism, the receiving terminal website is notified the mode of the transmitting time of described acknowledge message to other websites can be that described transmitting time is carried in broadcast frame, multicast frame or unicast frame, sends to other websites.In practical application, can adopt beacon (Beacon) frame or energy-conservation (the Power Saving Multi-Poll of inquiry more, being called for short PSMP) broadcast frame such as notification frame notifies transmitting time, perhaps, can also adopt the unicast frames such as probe response (Probe response) frame to notify transmitting time.
When the receiving terminal website is notified transmitting time with the unicast frame form, preferably carry and carry the indication information that to confirm described unicast frame in the unicast frame of transmitting time, in order to make the transmitting terminal website to confirm with clear and definite transmitting time whether successfully obtaining this unicast frame.
For the carrying form of acknowledge message in technique scheme, also can have multiple.Acknowledge message both can be acknowledgement frame independently, as multi-site data validation (Mutil-STAs Ack) frame, maybe can also for being carried at the information element in other frames, for example, acknowledge message can be carried in beacon frame or probing response frame.
In the specific implementation that the frame unification that the point-to-points website of receiving end station sends is confirmed, both can confirm the single frames that multi-site is sent out separately, also can confirm the multiframe that multi-site is sent out separately, the multiframe that can also send single frames and the part website of part website transmission is confirmed.The confirmation message frame structure of completing above-mentioned confirmation function also can arrange according to the actual requirements, and the below will explain in detail by embodiment.
Embodiment two
The implementation method of the receiving terminal data validation that the embodiment of the present invention two provides is specially the embodiment that single frames is confirmed.
The form that the receiving terminal website is confirmed the frame that successfully receives, a kind of is after the transmitting terminal website sends Frame at every turn, namely to wait for receiving terminal website feedback acknowledgment frame, so that whether identification correctly receives.Another kind of confirmation form is the transmission opportunity (Transmit Opportunity is called for short TXOP) of proposition in the 802.11e revision and the concept of block ack protocols (Block Acknowledgment protocol).TXOP refers to the bounded period of website transmission specific communications classification frame, is equivalent to the TXOP that website can disposable competition obtains transmitting a plurality of frames.Website obtains TXOP by competition, in case obtained TXOP, website can transmitting data frame, control frame and management frames and receive response frame.The website that obtains TXOP is called as " TXOP holder ".Corresponding, block ack protocols allows to use single true (Block Acknowledgment, abbreviation BA) frame is confirmed a plurality of frames that same transmitting terminal website sends in TXOP, rather than each frame is sent an ACK frame, thereby has improved efficient.
The transmitting terminal website can comprise service quality (Quality of Service is called for short QoS) control field in the transmission Frame, can comprise in this field and confirm tactful territory.Wherein can be following several confirmations strategies: strategy 1: normally confirm or the implicit expression piece is confirmed request; Strategy 2: do not confirm; Strategy 3: non-explicit confirmation or the scheduling under energy-conservation many inquiries mechanism are confirmed; Strategy 4: piece is confirmed or the multi-site data validation.The transmitting terminal website can be indicated the confirmation form of receiving terminal website by confirming strategy.The transmitting terminal website can be unified to confirm with indication receiving terminal website by the indication that shows the multi-site data validation is set in confirming strategy, or the receiving terminal website can adopt broadcasting or multicast form to carry out the unified confirmation of multi-site based on other tactful acquiescences.
The present embodiment can be take above-described embodiment as the basis, and is specially the form carrying acknowledge message that adopts independent acknowledgement frame, the embodiment that the single frames that each transmitting terminal website is sent is confirmed.The frame sequential schematic diagram of the implementation method of the receiving terminal data validation that Fig. 3 provides for the embodiment of the present invention two.
Embodying the mode that successfully receives each transmitting terminal frame that website sends in acknowledge message can have multiplely, for example distinguishes each website with the sign of transmitting terminal website, or directly distinguishes with frame information the frame that successfully receives.
In the present embodiment, adopt the mode of transmitting terminal site identity that the frame that successfully receives is confirmed.Specifically carry the site identity of transmitting terminal website corresponding to the frame that successfully receives in acknowledge message.Can be before the receiving terminal website send acknowledge message with the form of multicast or broadcasting during practical operation, add the site identity of transmitting terminal website corresponding to the frame that successfully receives in acknowledge message.Thereby make the frame that a plurality of transmitting terminal websites can know from the site identity of acknowledge message that our station sends whether be successfully received.
As shown in Figure 3, transmitting terminal site STA 2, STA3 and STA4 send data (DATA) frame to the receiving terminal website respectively when being assigned to channel, and enter sleep state in the time will sending without other Frames, wait for when transmitting time arrives or before arriving and waking up again, come confirmation of receipt message.If the receiving terminal website successfully receives the Frame that site STA 2, STA3 and STA4 send, the site identity with site STA 2, STA3 and STA4 is carried in acknowledge message, sends multi-site data validation (Mutil-STAs Ack) frame with the form of broadcasting or multicast to each website in the transmitting time of determining.
A kind of preferred format of multi-site data validation frame comprises following a plurality of field as shown in Fig. 4 A: frame control (Frame Control), duration (Duration), destination address (RA), transmitting terminal site address (TA), length (Length), station data information (STA data info) are conciliate adjustment and are tested (FCS).Preferred byte (Octets) number of each field is as shown in Fig. 4 A.Wherein, " Frame Control " field can comprise a plurality of son fields again, is used to indicate the corresponding information of frame; " Duration " field is used to indicate duration; " RA " field is used to indicate the receiving terminal address of frame, as target broadcast address or target multicast address; " " field is used to indicate the address of the transmitting terminal of frame to TA; " Length " field is used to indicate the byte number (can comprise or not comprise the byte number of FCS field) after this field; " STA data info " field is used for the data of a corresponding STA are confirmed; " FCS " field is used for the demodulation verification.The site identity of each transmitting terminal website can be added in each " STA data info " field.When not comprising any acknowledge message in the multi-site Frame, " Length " field is set to 4 (indication " Length " byte numbers afterwards, comprise FCS) or 0 (indication " Length " byte number afterwards, do not comprise FCS), namely successfully to receive the frame number be 0 to the receiving terminal website.the son field of frame control field as shown in Figure 4 B, wherein, type and sub-type field are used to indicate the particular type of frame, for ACK frame and BA frame, it is all control frame, so corresponding type field can be set to " 01 ", it is concrete which kind frame in the frame type of type field indication that subtype is distinguished, for example, the subtype that ACK is corresponding is set to " 1101 ", related multi-site data validation (Multi-STAs ACK) frame of the embodiment of the present invention can be denoted as a subclass in control frame, further utilize the some states in the reserved state (0000-0110) in subtype to indicate this class frame.
Be carried at site identity in acknowledge message " STA data info " and be and to allow the sign of transmitting terminal station recognition self, for example can be the association identification (AID) of website, as shown in Figure 5.Or site identity is media access control layer (MAC) address, as shown in Figure 6.Site identity can globally unique identifier's website, or at least in the multicast group of confirming the unique identification website get final product.
Embodiment three
The frame sequential schematic diagram of the implementation method of the receiving terminal data validation that Fig. 7 provides for the embodiment of the present invention three.The present embodiment can be take above-described embodiment as the basis, and is to adopt other frames carrying acknowledge messages with embodiment two difference, and specifically acknowledge message is as its information element, is carried in beacon frame to send.The frame format of carrying the information element of acknowledge message can be as shown in Figure 8, acknowledge message is distinguished with component identification (Element ID), the concrete field setting of acknowledge message can realize the frame that successfully receives from multi-site is confirmed to get final product, and for example can comprise the content of " Length " shown in Fig. 4 A field, " STA datainfo " field.
As shown in Figure 7, transmitting terminal site STA 2, STA3 and STA4 send data (DATA) frame to the receiving terminal website respectively when being assigned to channel, and enter sleep state in the time will sending without other Frames, wait for when transmitting time arrives or wake again confirmation of receipt message before arriving up.The Frame that receiving terminal website success receiving station STA2, STA3 and STA4 send, the site identity with site STA 2, STA3 and STA4 is carried in multi-site data validation information element, then this multi-site data validation information element is carried in beacon frame, sends to each website in the form of transmitting time with broadcasting or multicast.
Embodiment four
The implementation method of the receiving terminal data validation that the embodiment of the present invention four provides, can the various embodiments described above be example, and the technical scheme that the data that are specially once one or more frames that the transmitting terminal website is sent are confirmed, in this scheme, can be that all transmitting terminal websites all send a plurality of frames, can be also that part transmitting terminal website sends a frame, part transmitting terminal website sends a plurality of frames.For above-mentioned various situations, the receiving terminal website all can adopt the technical scheme of the present embodiment to confirm.
Introduced block ack protocols (Block Acknowledgment protocol) in existing 802.11e protocol revision.Block ack protocols allows to use single true (Block Acknowledgment is called for short BA) frame to confirm the monoblock Frame that same transmitting terminal website sends.
The technical scheme of the present embodiment is improved based on existing block ack protocols, when multi-site is confirmed, can confirm simultaneously a frame or multiframe that same transmitting terminal website sends.The present embodiment preferably identifies a plurality of frames with frame information.Specifically carry the frame information from a plurality of transmitting terminal websites that successfully receives in acknowledge message, described frame information comprises the frame information corresponding to one or more frames of same transmitting terminal website.Can be before sending acknowledge message with the form of multicast or broadcasting in practical operation, the receiving terminal website add in acknowledge message successfully receive from frame information corresponding to one or more frames of same transmitting terminal website.Frame information from same transmitting terminal website can setting corresponding to site identity.Certainly, it will be understood by those skilled in the art that and be equally applicable to the confirmation of single frames being carried out with frame information when the technique scheme acknowledge message is carried the frame information of a frame.
In the present embodiment, can adopt data structure shown in Figure 9 that " STA data info " field is set, comprise site identity (AID), homing sequence number (Starting Sequence Number) and ACK bitmap (ACK Bitmap), wherein, " Starting Sequence Number " field is used to indicate the homing sequence number of the frame of confirmation, its usually sequence number corresponding to each Frame be carried in Frame by the transmitting terminal website and send; " ACK Bitmap " field for whether the frame from " Starting Sequence Number " beginning is successfully received characterizes.
Certainly, these each those skilled in the art are appreciated that, what successfully receive is not limited to above-mentioned form from frame information corresponding to one or more frames of same transmitting terminal website, can be other information of the sequence number that carries in the number of frames that carries in the frame that successfully receives and/or the frame of indirectly indicating described success to receive.For example, can be each frame that successfully receives number of frames separately, can also be the information that the unique sign frame of other energy is successfully received." STA data info " field preferred form given in above-described embodiment is as shown in Fig. 5,6 and 9, but it will be appreciated by those skilled in the art that, be not limited to above-mentioned message form in actual confirmation message, as long as can show that the frame to the transmitting terminal website successfully receives.
Embodiment five
The frame sequential schematic diagram of the implementation method of the receiving terminal data validation that Figure 10 provides for the embodiment of the present invention five, the present embodiment are specially the technical scheme that adopts unification of the present invention that multiple sending end website is confirmed in the PSMP technology.
PSMP is a kind of dispatching technique of introducing in the 802.11n agreement, is used for optimizing channel access.PSMP is by providing down link and uplink scheduling to realize optimization to energy consumption in the PSMP incipient stage.Website does not need to carry out channel clear detection technology (Clear Channel Assessment is called for short CCA) like this, just can close when not required receiver in downlink phase, and send on the time that is scheduled in uplink phase.In the PSMP sequence, can only exchange following frame type between website: the PSMP management frames; The Qos Frame; Multi-TID BAR; BAR; Multi-TID BA; BA; Do not need the MPDU that makes an immediate response.
As shown in figure 10, at first site STA 1 sends the energy-conservation notification frame of asking more and dispatches, subsequently, site STA 2, STA3 and STA4 send frame (PSMP-UTT) to STA1 in the channel that distributes, in the time need to sending to STA1 without other frames, enter sleep state, until transmitting time just wakes up when arriving or before arriving, with confirmation of receipt frame (Mutil-STAs Ack).In the PSMP technology, can carry transmitting time in energy-conservation many inquiry notification frame as the site STA 1 of receiving terminal and notify each transmitting terminal website.
In existing PSMP technology, the receiving terminal website can not use ACK that the single frame that successfully receives is confirmed, so poor reliability, the present embodiment adopts multicast or the forms of broadcasting to the unified technical scheme of confirming of multi-site in the PSMP technology, improved the reliability of frame transmission than prior art, when receiving acknowledge message, the transmitting terminal website can not carry out retransmission operation, on the other hand, the present embodiment is confirmed because multi-site is unified, has also been reduced the overhead that the receiving terminal website is confirmed one by one to each website.
The implementation method of the receiving terminal data validation that various embodiments of the present invention provide can once be carried out the frame confirmation of receipt to a plurality of websites, has saved overhead, when this confirmation method is applied to the PSMP technology, also can promote the efficiency of transmission of PSMP.
It will be appreciated by those skilled in the art that, the form of the bearing method of acknowledge message, site identity and frame information, the advice method of transmitting time etc. all are not limited to above-mentioned form, can also carry out as required other settings, each implementation also can be combined with arbitrarily.
Embodiment six
The flow chart of the implementation method of the transmitting terminal data validation that Figure 11 provides for the embodiment of the present invention six, the present embodiment can coordinate receiving terminal data validation method provided by the present invention to carry out, and is specifically carried out by the transmitting terminal website, and the method comprises the steps:
Further, after confirming according to described acknowledge message that when the transmitting terminal website frame that this website sends is not successfully received, can resend the frame that is not successfully received.
In the present embodiment, the confirmation message that the transmitting terminal website receives to broadcast or the multicast form sends, thereby the receiving terminal website possesses the ability of notifying simultaneously a plurality of websites, can effectively reduce overhead in the time need to confirming the frame of multi-site.
On the basis of technique scheme, confirm that according to described acknowledge message the operation whether frame that this website sends is successfully received can specifically comprise: carry the site identity of transmitting terminal website corresponding to frame that the receiving terminal website successfully receives in described acknowledge message, the transmitting terminal website confirms according to described site identity whether the frame of this website transmission is successfully received.This site identity can be the sign of unique difference transmitting terminal websites such as the association identification of transmitting terminal website or media access control layer address.
In the mode of operation of confirming according to site identity, the transmitting terminal website can be identified coupling to a plurality of site identity that are carried in acknowledge message, when coupling obtained the site identity identical with this website, the frame that is considered as the transmission of this website was successfully received.
Perhaps, confirm that according to described acknowledge message the operation whether frame that this website sends is successfully received can also carry out according to frame information, carry frame information corresponding to one or more frames that the receiving terminal website successfully receives in described acknowledge message, wherein, can setting corresponding to site identity from the frame information of same transmitting terminal website.The transmitting terminal website specifically can confirm whether one or more frames that this website sends are successfully received according to described frame information.
The technical scheme of confirming according to frame information had both gone for situation that the single frames that the transmitting terminal website sends is confirmed, also went for sending based on the same transmitting terminal website that block ack protocols is carried out the situation of at least two frames.The concrete form that it will be understood by those skilled in the art that frame information can have multiple, and for example, described frame information comprises the number of frames of the frame that the receiving terminal website successfully receives and/or indirectly indicates other information of the sequence number of the frame that described success receives.
Embodiment seven
The implementation method of the transmitting terminal data validation that the embodiment of the present invention seven provides, can be take above-described embodiment as the basis, specifically the transmitting terminal website is before receiving the confirmation message of receiving terminal website with broadcasting or the transmission of multicast form, also comprise: obtain the receiving terminal website with the transmitting time of the confirmation message of the form notice of broadcasting, multicast or clean culture, in order to obtain described acknowledge message in described transmitting time.Wherein, this transmitting time is absolute time point or absolute time section, is perhaps relative point in time or relative time section
Can be referring to earlier figures 3, Fig. 7 and shown in Figure 9, before receiving the confirmation message of receiving terminal website with broadcasting or the transmission of multicast form, at first the transmitting terminal website sends one or more frames, enters afterwards sleep state, and the transmitting time that arrives described acknowledge message or before wake up.The transmitting terminal website is slept after sending frame and can be realized the purpose of power saving.Transmitting time determine that can be website consult to determine when connecting networking, also can be preferably before confirming at every turn, by receiving terminal website short notice transmitting terminal website.Transmitting time can be one that has in a plurality of times of fixed cycle, or the interim time of determining.
The implementation method of the receiving terminal that the embodiment of the present invention provides and transmitting terminal data validation can be indicated by confirming strategy.Can comprise service quality (Quality of Service is called for short QoS) control field in Frame, can comprise in this field and confirm tactful territory.Following several confirmation strategy is arranged: strategy 1: normally confirm or implicit expression piece confirmation request; Strategy 2: do not confirm; Strategy 3: non-explicit confirmation or the scheduling under energy-conservation many inquiries mechanism are confirmed; Strategy 4: piece is confirmed or the multi-site data validation.
At first the transmitting terminal website sent one or more frames before receiving the confirmation message of receiving terminal website with broadcasting or the transmission of multicast form, the confirmation strategy that can carry in frame is the multi-site data validation.Thereby allow the receiving terminal website can carry out the unified strategy of confirming.According to the confirmation strategy that carries in frame, the receiving terminal website also can be combined with the existing unified confirmation of the multi-site strategy of confirming that immediately strategy and the embodiment of the present invention provide.
Embodiment eight
The structural representation of the implement device of the receiving terminal data validation that Figure 12 provides for the embodiment of the present invention eight, the implement device of this receiving terminal data validation comprises: frame receiver module 121 and frame acknowledgment module 122, wherein, frame receiver module 121 is used for receiving the frame that sends from one or more transmitting terminal websites; Frame acknowledgment module 122 is used for sending acknowledge message with the form of multicast or broadcasting, and the frame that successfully receives is confirmed.
On the basis of technique scheme, the implement device of this receiving terminal data validation can also comprise: time announcement module 123, be used for notifying to other websites the transmitting time of described acknowledge message, wherein, described transmitting time is absolute time point or absolute time section, is perhaps relative point in time or relative time section.
The implement device of the receiving terminal data validation that the present embodiment provides can be integrated among each website, carries out the implementation method of the receiving terminal data validation that any embodiment of the present invention provides, and possesses corresponding functional module.By with multicast or the forms of broadcasting, the frame of multi-site being unified to confirm, can effectively reduce the confirmation expense of receiving terminal website, improve efficiency of transmission.
Embodiment nine
The structural representation of the implement device of the transmitting terminal data validation that Figure 13 provides for the embodiment of the present invention nine, the implement device of this transmitting terminal data validation comprises: message sink module 131 and confirmation of receipt module 132, wherein, message sink module 131 is used for receiving the confirmation message that the receiving terminal website sends with broadcasting or multicast form; Confirmation of receipt module 132 is used for confirming according to described acknowledge message whether the frame that this website sends is successfully received.
Confirm on the basis of scheme at this, the implement device of this transmitting terminal data validation can further include data re-transmission module 136, be used for resending the frame that is not successfully received after the frame of confirming the transmission of this website according to described acknowledge message is not successfully received.
The implement device of the transmitting terminal data validation that the present embodiment provides can be integrated among each website, carries out the implementation method of the transmitting terminal data validation that any embodiment of the present invention provides, and possesses corresponding functional module.By obtaining receiving terminal with the confirmation message that the multistation point frame is unified to confirm that multicast or the forms of broadcasting send, can effectively reduce the confirmation expense of receiving terminal website, improve efficiency of transmission.
On the basis of such scheme, the implement device of this transmitting terminal data validation can also comprise transmitting time acquisition module 133, be used for obtaining the receiving terminal website with the transmitting time of the confirmation message of the form notice of broadcasting, multicast or clean culture, in order to obtain described acknowledge message in described transmitting time, wherein, described transmitting time is absolute time point or absolute time section, is perhaps relative point in time or relative time section.
Above-mentioned implement device preferably also comprises: sleep awakening module 134, be used for sending one or more frames, enter afterwards sleep state, and the transmitting time that arrives described acknowledge message or before wake up.Obtain the transmitting time of acknowledge message based on informing mechanism, make the transmitting terminal website to enter sleep state when wait acknowledge message and come power saving.
Said apparatus can further include: tactful indicating module 135, be used for sending one or more frames, and the confirmation strategy that carries in described frame is the multi-site data validation.Indicate the confirmation form of receiving terminal website by carrying the mode of confirming strategy, can make the receiving terminal website neatly in conjunction with using various confirmation means.The technical scheme of the embodiment of the present invention, no matter efficiently solve in prior art is only the data of a website to be confirmed in single frames confirmation or the true mode of piece at every turn, and causes confirming that efficient is not high, the problem that overhead is larger.In PSMP, can guarantee also that for non-polymeric data whether successfully the data of uploading are identified reception, have improved the efficient of PSMP.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be completed by the hardware that program command is correlated with, aforesaid program can be stored in a computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (28)
1. the implementation method of a receiving terminal data validation, is characterized in that, comprising:
The frame that reception sends from one or more transmitting terminal websites;
Form with multicast or broadcasting sends acknowledge message, and the frame that successfully receives is confirmed.
2. the implementation method of receiving terminal data validation according to claim 1 is characterized in that:
Carry the site identity of transmitting terminal website corresponding to frame that described success receives in described acknowledge message.
3. the implementation method of receiving terminal data validation according to claim 2, is characterized in that, described site identity is association identification or the media access control layer address of website.
4. the implementation method of receiving terminal data validation according to claim 1 is characterized in that:
Carry frame information corresponding to one or more frames that successfully receives in described acknowledge message.
5. the implementation method of receiving terminal data validation according to claim 4, is characterized in that, described frame information comprises:
Other information of the sequence number that carries in the number of frames that carries in the frame that described success receives and/or the frame of indirectly indicating described success to receive.
6. the implementation method of receiving terminal data validation according to claim 1, is characterized in that, before the form with multicast or broadcasting sends described acknowledge message, also comprises:
Notify the transmitting time of described acknowledge message to other websites, wherein, described transmitting time is absolute time point or absolute time section, is perhaps relative point in time or relative time section.
7. the implementation method of receiving terminal data validation according to claim 6 is characterized in that:
The transmitting time that sends this acknowledge message is one that has in a plurality of times of fixed cycle; Perhaps
The transmitting time that sends this acknowledge message is the interim time of determining.
8. the implementation method of receiving terminal data validation according to claim 6, is characterized in that, notifies the transmitting time of described acknowledge message to comprise to other websites:
Described transmitting time is carried in broadcast frame, multicast frame or unicast frame, sends to other websites.
9. the implementation method of receiving terminal data validation according to claim 8, is characterized in that, described broadcast frame is beacon frame or the energy-conservation notification frame of asking more; Perhaps, described unicast frame is probing response frame.
10. the implementation method of receiving terminal data validation according to claim 8 is characterized in that:
Carry and carry the indication information that to confirm described unicast frame in the unicast frame of described transmitting time.
11. the implementation method of according to claim 1-10 arbitrary described receiving terminal data validations is characterized in that:
Described acknowledge message is for acknowledgement frame independently or for being carried at the information element in other frames.
12. the implementation method of a transmitting terminal data validation is characterized in that, comprising:
Receive the confirmation message that the receiving terminal website sends with broadcasting or multicast form;
Confirm according to described acknowledge message whether the frame that this website sends is successfully received.
13. the implementation method of transmitting terminal data validation according to claim 12 is characterized in that, confirms according to described acknowledge message whether frame that this website sends is successfully received and comprises:
Carry the site identity of transmitting terminal website corresponding to frame that the receiving terminal website successfully receives in described acknowledge message, confirm according to described site identity whether the frame that this website sends is successfully received.
14. the implementation method of transmitting terminal data validation according to claim 13 is characterized in that, described site identity is association identification or the media access control layer address of transmitting terminal website.
15. the implementation method of transmitting terminal data validation according to claim 12 is characterized in that, confirms according to described acknowledge message whether frame that this website sends is successfully received and comprises:
Carry frame information corresponding to one or more frames that the receiving terminal website successfully receives in described acknowledge message, confirm according to described frame information whether one or more frames that this website sends are successfully received.
16. the implementation method of transmitting terminal data validation according to claim 15 is characterized in that:
Described frame information comprises the number of frames of the frame that the receiving terminal website successfully receives and/or indirectly indicates other information of the sequence number of the frame that described success receives.
17. the implementation method of transmitting terminal data validation according to claim 12 is characterized in that, before receiving the confirmation message of receiving terminal website with broadcasting or the transmission of multicast form, also comprises:
Obtain the receiving terminal website with the transmitting time of the confirmation message of the form notice of broadcasting, multicast or clean culture, in order to obtain described acknowledge message in described transmitting time, wherein, described transmitting time is absolute time point or absolute time section, is perhaps relative point in time or relative time section.
18. the implementation method of transmitting terminal data validation according to claim 17 is characterized in that:
Described transmitting time is one that has in a plurality of times of fixed cycle; Perhaps
Described transmitting time is the interim time of determining.
19. the implementation method of according to claim 12-18 arbitrary described transmitting terminal data validations is characterized in that, before receiving the confirmation message of receiving terminal website with broadcasting or the transmission of multicast form, also comprises:
Send one or more frames, the confirmation strategy that carries in described frame is the multi-site data validation.
20. the implementation method of according to claim 12-18 arbitrary described transmitting terminal data validations is characterized in that, also comprises: after the frame of confirming the transmission of this website according to described acknowledge message is not successfully received, resend the frame that is not successfully received.
21. the implementation method of according to claim 12-18 arbitrary described transmitting terminal data validations is characterized in that, before receiving the confirmation message of receiving terminal website with broadcasting or the transmission of multicast form, also comprises:
Send one or more frames, enter afterwards sleep state, and the transmitting time that arrives described acknowledge message or before wake up.
22. the implement device of a receiving terminal data validation is characterized in that, comprising:
The frame receiver module is used for receiving the frame that sends from one or more transmitting terminal websites;
The frame acknowledgment module is used for sending acknowledge message with the form of multicast or broadcasting, and the frame that successfully receives is confirmed.
23. the implement device of receiving terminal data validation according to claim 22 is characterized in that, also comprises:
The time announcement module, for notify the transmitting time of described acknowledge message to other websites, wherein, described transmitting time is absolute time point or absolute time section, is perhaps relative point in time or relative time section.
24. the implement device of a transmitting terminal data validation is characterized in that, comprising:
The message sink module is used for receiving the confirmation message that the receiving terminal website sends with broadcasting or multicast form;
The confirmation of receipt module is used for confirming according to described acknowledge message whether the frame that this website sends is successfully received.
25. the implement device of transmitting terminal data validation according to claim 24 is characterized in that, also comprises:
The transmitting time acquisition module, be used for obtaining the receiving terminal website with the transmitting time of the confirmation message of the form notice of broadcasting, multicast or clean culture, in order to obtain described acknowledge message in described transmitting time, wherein, described transmitting time is absolute time point or absolute time section, is perhaps relative point in time or relative time section.
26. the implement device of according to claim 24 or 25 described transmitting terminal data validations is characterized in that, also comprises:
The strategy indicating module is used for sending one or more frames, and the confirmation strategy that carries in described frame is the multi-site data validation.
27. the implement device of according to claim 24 or 25 described transmitting terminal data validations is characterized in that, also comprises:
The sleep awakening module is used for sending one or more frames, enters afterwards sleep state, and the transmitting time that arrives described acknowledge message or before wake up.
28. the implement device of according to claim 24 or 25 described transmitting terminal data validations is characterized in that, also comprises:
The data re-transmission module is used for resending the frame that is not successfully received after the frame of confirming the transmission of this website according to described acknowledge message is not successfully received.
Priority Applications (2)
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| CN2011103458840A CN103095429A (en) | 2011-11-04 | 2011-11-04 | Implement method and device for data validation at receiving end and sending end |
| PCT/CN2012/084072 WO2013064113A1 (en) | 2011-11-04 | 2012-11-05 | Data acknowledgement realization method and apparatus for reception end and transmission end |
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| CN2011103458840A CN103095429A (en) | 2011-11-04 | 2011-11-04 | Implement method and device for data validation at receiving end and sending end |
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