CN101006673A - System and method for variable length aggregate acknowledgements in a shared resource network - Google Patents
System and method for variable length aggregate acknowledgements in a shared resource network Download PDFInfo
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Abstract
The present invnetion provides a system and method for producing variable length acknowledgments and requesting variable length acknowledgement signals in a shared resource network. A plurality of data streams and frames are received, and receipt status information of the plurality of frames is generated. An acknowledgment frame comprising the receipt status information is produced. A length of the receipt status information is dependent on a number of the plurality of frames.
Description
Technical field
The present invention relates to the shared resource network technology, and relate more specifically to be used to strengthen the mechanism of the channel utilization of shared resource network.More specifically, the invention provides a kind of system and method that is used for providing variable length aggregate acknowledgements (aggregatedacknowledgement) in shared resource network.
Background technology
The multiple telecommunication service that provides is provided the wireless terminal in many present age.For example, a terminal can provide circuit switched voice and data delivery service and packet-switched data transfer services and messenger service.These services can be provided via common network or by networks of different type.For example, packet-switched data transfer services can be provided by the connection between terminal and the wireless lan (wlan) access point.On the other hand, circuit switched service can be provided by the connection between terminal and the Public Land Mobile Nerwork (PLMN).
WLAN uses for commercial and house and is just becoming more and more universal.For example, many companies adopt WLAN to replace corporate lan, perhaps as the enhancing to corporate lan.In addition, many service industries, for example restaurant and hotel have adopted WLAN to provide access to the Internet or other data network to the user.Along with WLAN becomes more and more widely, be designed to also increases in the quantity of deferring to the application that moves on the station of WLAN thereupon.For example, the station of typically deferring to WLAN is characterised in that: text message applications, Internet-browser and flowing content player, and other application.The user can defer to the application that moves any amount on the station of WLAN simultaneously.
In WLAN, often require response station (responder station) to confirm the reception of the data that receive from initiator (initiator station).Affirmation (ACK) signal that sends to initiator from the response station confirms that to initiator the response station has correctly received the data of being launched.In deferring to the device of WLAN, ACK is generated at media interviews controls (MAC) layer.This acknowledgment mechanism consumes valuable system bandwidth.Because wireless system resources is limited and is subjected to the restriction of system bandwidth, so wish to minimize the use of signaling and control Radio Resource especially in the shared resource wireless network.
The various improvement of affirmation mechanism in the IEEE802.11 network, have been developed.For example, a kind of (block) affirmation mechanism allows the generation and the emission of response side's delayed acknowledgement, up to receiving a plurality of frames.In such a way, single acknowledgement frame can be sent to the reception that the initiator confirms several frames from the recipient.Yet each frame that this implementation requires to be identified in piece is confirmed all belongs to a common data stream.That is, piece confirms that each frame confirmed all must be with identical application or processing entities as target.And the size that traditional piece is confirmed is fixed, and therefore expends the acknowledgement frame of fixed amount and irrelevant with the quantity of the frame that is identified.
Summary of the invention
It is favourable that a kind of system and method that is used for improved affirmation mechanism is provided in shared resource network.In addition, in shared resource network, provide a kind of and be used to confirm that the affirmation mechanism of the reception of a plurality of frames also is favourable.It is favourable that the affirmation mechanism of the confirmation of receipt of the frame that the single confirmation signal of a kind of usefulness facilitates a plurality of data flow is provided.In addition, it also is favourable providing a kind of affirmation mechanism of confirmation of receipt of frame of variable number of data flow of facilitating variable number.
Embodiments of the invention provide a kind of system and method that is used for producing in shared resource network the variable length aggregate acknowledgements frame.A plurality of frames are received, and the receiving status information relevant with described a plurality of frames is generated.Generate aggregate acknowledgement frames, this aggregate acknowledgement frames comprises an affirmation information field that comprises receiving status information.The length of receiving status information depends on the quantity of described a plurality of frames.
Description of drawings
The each side of present disclosure will be by being understood with reference to the accompanying drawings in the following detailed description best.
Fig. 1 is the simplified block diagram of an example network environment;
Fig. 2 is the schematic diagram of acknowledgement frame that is used for confirming in WLAN (wireless local area network) the reception of Frame;
Fig. 3 is the schematic diagram of a frame sequence of exchange between initiator and response station;
Fig. 4 is the schematic diagram of embodiment of variable length aggregate acknowledgements frame that is used for confirming in shared resource network the reception of Frame;
Fig. 5 is the schematic diagram of another embodiment of variable length aggregate acknowledgements frame that is used for confirming in shared resource network the reception of Frame;
Fig. 6 is the schematic diagram of another embodiment of variable length aggregate acknowledgements frame that is used for confirming in shared resource network the reception of Frame;
Fig. 7 is the schematic diagram of another embodiment of aggregate acknowledgement frames that is used for confirming in shared resource network the reception of Frame; With
Fig. 8 is the frame sequence of exchange between initiator and response station and the schematic diagram of confirming the embodiment of sequence.
Embodiment
Should be appreciated that and the following disclosure provides embodiment or the example that many different being used to realize the different characteristic of various embodiment.The object lesson of assembly and layout is described hereinafter simplifies present disclosure.Certainly, these only are examples and are not to be intended to restriction.In addition, present disclosure may be in different examples repeat reference numerals and/or letter.This repetition is purpose for the sake of simplicity and clearly, and himself do not stipulate the various embodiment that discussed and/or the relation between the structure.
Fig. 1 is the simplified block diagram of example networks 100 environment.Network 100 is examples of shared resource network.For example, network 100 may be implemented as a wireless lan (wlan) of following the IEEE802.11 standard.Particularly, network 100 can be realized according to the IEEE802.11WLAN standard.
In illustrative example, network 100 comprises two basic service sets (BSS) 1 and 2, yet can comprise the BSS of any amount in the network 100.BSS1 and 2 provides the corresponding area of coverage, and wherein, WLAN station (STA) 20-23 can intercom mutually via wireless medium, perhaps with communicate by letter with in other external networks of network 100 interfaces other or calculation element is communicated by letter.BSS1 and 2 can be interconnected communicatedly by compartment system (DS) 30.DS30 realizes the mobile device support by the integrated necessary logical services that is provided for processing intent ground mapping address and a plurality of BSS.Each BSS comprises that provides the access point (AP) to the access of DS30.In illustrative example, the BSS1 and 2 with the area of coverage 10 and 11 has corresponding AP40 and 41.By AP40 and 41 and the DS30 that provides of BSS1 and 2 facilitated the establishment of the wireless network of any size and complexity, and DS30 and set with BSS1-2 of area of coverage 10-11 are called the expansion service group network jointly.Logic between network 100 and the non-IEEE802.11LAN (for example LAN50) is integrated to be provided by inlet 60.Various other structures of network 100 are possible.For example, the area of coverage 10 and 11 can be partly overlapping or can be juxtaposed.And embodiments of the invention can be used in comprising the WLAN of single Independent B SS.
Among the STA 20-23 each can be implemented as a corresponding data handling system, and this system is suitable for can carrying out the communication in wireless networks of the device of data communication such as wireless laptop computers, personal digital assistant, cell phone or other.STA can comprise a processing unit, for example general purpose microprocessor and/or application-specific integrated circuit (ASIC), such as random access memory, read-only memory or be used to preserve storage device, the communication interface such as wireless communication card and various other assembly and the ancillary equipment of other storage device of machine-readable data.
Each side of the present invention can with software, hardware, firmware or it be in conjunction with realizing.Can be individually or be implemented as a computer program in combination in each unit of system, described product visibly is included in the machine-readable storage device by the processing unit operation.Each step of the embodiment of the invention can be carried out by the computer processor of an executive program, and described program visibly is included on the computer-readable medium and carries out function by operation input and generation output.Computer-readable medium for example can be the memory in the WLAN station, or portable medium, for example CD, floppy disk, disk, and the computer program that therefore embodies each side of the present invention can be loaded on the computer.Computer program is not limited to any special embodiment, and is implemented in operating system, application program, foreground or the background process that for example can carry out on single computer processor or a plurality of computer processor, driver or its any combination.In addition, each step of the embodiment of the invention can provide a data structure that generates, produces, receives or otherwise realize on the computer-readable medium of for example memory.
Though the device of shared resource network, operation therein and the explanation of the wireless medium transmissions in the shared resource network are provided according to IEEE802.11 agreement, functional and nomenclature herein, yet this class example is illustrative, and enforcement of the present invention is not limited to any special networks, defers to device or the network communication format or the agreement of network.And, be exemplary about the explanation of the present invention that implementation provided in the network of following IEEE802 herein and just be provided to help to understand the present invention.Embodiments of the invention can utilize shared resource to come other network architecture of implementation data communication and install to be implemented.
With reference now to Fig. 2,, shows a schematic diagram of acknowledgement frame 200 that is used for confirming the reception of Frame at WLAN.The affirmation signal of the acknowledgement frame 200 non-service quality of expression (non-QoS).Acknowledgement frame 200 comprises frame control field 202, duration field 204, receiver address (RA) field 206 and Frame Check Sequence (PCS) 208.Frame control field 202, duration field 204 and RA field 206 are all components of media interviews control (MAC) header of comprising in the mac frame.FCS208 for example can comprise 32 cyclic redundancy codes.Acknowledgement frame 200 is suitable for the frame by frame acknowledgement frame and receives.That is,, be similar to an acknowledgement frame shown in Fig. 2 and be sent to emission side from the recipient for the frame of each reception.
With reference now to Fig. 3,, shows the schematic diagram of the frame sequence exchange between initiator and the response station.In illustrative example, for example the response station emission that begins usual practice WLAN station 23 as shown in fig. 1 of the initiator at the WLAN shown in Fig. 1 station 20 comprises the frame sequence 300 of a plurality of frame 310a-312c.Frame 310a-312c represents to comprise the frame of the Medium Access Control (MAC) Protocol Data Unit (MPDU) of various traffic streams, and exemplarily is designated as MPDUx-Y, and wherein, the X specified services flows and Y designated frame numbering.Therefore, a frame subclass that comprises three frame 310a-310c of Business Stream " 1 " is illustrated from initiator and is transmitted into the response station.Equally, the respective frame subclass of three frame 311a-311c of Business Stream " 2 " and " 3 " and 312a-312c is illustrated from initiator and is launched into the response station.
Response can be to confirm each received frame respectively.For example, the response station can generate and launch an acknowledgement frame 320a in response to the reception of frame 310a.In a similar fashion, response station generates respectively in response to the reception of respective frame 310b-312c and launches acknowledgement frame 320b-322c.In this example, independently acknowledgement frame exemplarily is appointed as ACK
x-Y, wherein, X specified services stream, and Y specifies acknowledgement frame to confirm the frame number that receives.For example, acknowledgement frame 320a is designated as ACK
r-l, and confirm thus Business Stream " 1 " frame " 1 ", be the reception of frame 310a.As can be seen, acknowledgement frame 320a-322c is confirmed the reception of each received frame 310a-312c respectively frame by frame by the emission of response side.
Having developed the affirmation mechanism of improving helps confirm a plurality of frames with single acknowledgement frame.For example, piece confirms that (B-ACK) mechanism is defined in the IEEE802.11e standard, and this standard allows to receive with single acknowledgement frame the affirmation of a plurality of frames.Yet traditional piece confirms only to allow to have the affirmation of a plurality of frames of the single Business Stream of public service identity symbol (TID).
Therefore, expectation is provided at the technology that single aggregate acknowledgements (A-ACK) with variable-size or high-throughput confirm to confirm in (HT-ACK) frame a plurality of frames of different business stream.Particularly, acknowledgement frame is sent out in response to the different Medium Access Control (MAC) Protocol Data Units (MPDU) that exist in the aggregate frame.Aggregate acknowledgements scheme described herein provides the affirmation of a plurality of frames, and has held the task identifier (TID) of each individual aggregate acknowledgment frame and any segmentation that sequence is controlled definition in definition and the forward sequence control.In addition, aggregate acknowledgement frames also is provided for the traffic frame with any TID related with it, for example, is used for from the tradition station of not supporting a plurality of Business Streams or the MPDU of device.
Among the described herein embodiment, various field sizes is described.Yet this class field size or length specification are exemplary and are selected to help to understand the present invention.Also can use other field size values and not depart from instruction of the present invention.For example, a field with specific exemplary size described herein can realize with different field size, so that use border such as 4 bit boundaries, byte boundary, word boundary or long word border to realize the aligning of field.This aligning can be implemented by filling suitable field.In addition, field structure provided herein is exemplary, and can do various rearranging and not break away from instruction of the present invention the order of data field.It will be understood by those skilled in the art that and to realize much other variations.
With reference now to Fig. 4,, it shows the schematic diagram of embodiment of aggregate acknowledgements (A-ACK) frame 400 that is used for confirming in shared resource network the reception of Frame, and shared resource network for example is the shared resource network 100 shown in Fig. 1.A-ACK frame 400 can comprise frame control field 402, duration field 404, receiver address (RA) field 406, variable length acknowledgment information field 408 and Frame Check Sequence (FCS) 408.Acknowledgement information field 408 comprises and the quantity that is identified frame, (one or more) Business Stream that is identified frame and accepting state or the relevant information of its confirmation.Particularly, acknowledgement information field 408 can comprise various son fields, and these son fields comprise count field 408a, and count field 408a comprises the value identifiers of the quantity n of the frame that an appointment A-ACK frame 400 is confirmed.In addition, acknowledgement information field 408 can comprise one or more field groups 420a-420n of task identifier (TID) field and related with it respectively corresponding sequence control field.In illustrative example, acknowledgement information field 408 can comprise TID identifier field 408b
1-408n
1Each corresponding sequence control field 408b with the frame that is used to confirm that different business flows
2-408n
2For example, the TID identifier field 408b of field groups 420a
1Specify TID, and the sequence control field 408b of field groups 420a
2Identified TID identifier field 408b
1The sequence number that is identified frame of the TID of middle appointment.In a similar fashion, each among the field groups 420b-420n identifies the sequence number of the TID and the frame of the TID identifier field that is associated respectively.Therefore, A-ACK frame 400 provides a kind of mechanism that is used for confirming the frame of one or more TID in single A-ACK frame.In exemplary A-ACK frame 400, count field 408a has defined the collective number of the frame of A-ACK frame 400 affirmations.Therefore, A-ACK frame 400 is variable length frames and is applicable to that the frame for the variable number of one or more TID provides accepting state.
As seen, the length of acknowledgement frame depends on the quantity that is identified frame and dynamically changes.Advantageously, the unnecessary bytes quantity of acknowledgement frame consumption is eliminated or minimizes.In addition, repeat the acknowledge frame and confirm that the needs of received data are minimized.
With reference now to Fig. 5,, shows the schematic diagram of another embodiment of the variable-length A-ACK frame of the reception of affirmation Frame in shared resource network.The reception that A-ACK frame 500 can be included as the data of one or more TID provides the field of affirmation.A-ACK frame 500 comprises frame control field 502, duration field 504, RA field 506, variable length acknowledgment information field 508 and FCS510.Acknowledgement information field 508 comprises various son fields, and they comprise the relevant information of quantity with the TID with frame of being confirmed by A-ACK frame 500.Particularly, acknowledgement information field 508 comprises a TID count area 512, and TID count area 512 comprises the value identifiers N of the quantity of a TID who points out to have the frame of being confirmed by A-ACK frame 500.Each TID with one or more frames of confirming by A-ACK frame 500 uniquely with field groups 514A-514N in one be associated.Each field groups 514A-514N can comprise: the TID identifier field, and it comprises the sign of the TID that is associated; The sequence control field, it specifies the homing sequence control information; With confirm bitmap field, it comprises the bitmap of the affirmation information of the one or more frames with the TID that is associated.In illustrative example, TID count area 512 specifies A-ACK frame 500 to comprise the affirmation data of N Business Stream or TID.Therefore, N field groups 514A-514N is included in the acknowledgement information field 508.For example, TID identifier field 514a1 specifies TID " 1 " (TID-1).Therefore, sequence control field 514a
2The sequence number that comprises first frame of TID-1, this first frame has bitmap field 514a
3The accepting state that first bit value in the middle bitmap of preserving is identified.The other frame of TID-1 can have bitmap field 514a
3The accepting state that the corresponding bits value of the middle bitmap of preserving is provided.In a similar fashion, field groups 514B-514N provides the affirmation information of one or more frames of corresponding TID respectively.Notice that the TID value of a specific T ID of sign only is sent out once in having the A-ACK frame 500 of form shown in Fig. 5.In addition, the affirmation bitmap of each TID is included in the A-ACK frame 500 with single number of frames, rather than comprises each acknowledgement frame sequence number, as carrying out in reference to figure 4 described A-ACK frames 400.Be included in and confirm bitmap field 514a
3-514n
3In the affirmation bitmap accepting state of the frame with the sequence number that number calculates about the homing sequence in the corresponding sequence control field is provided.For example, suppose sequence control field 514a
2Sequence number value of being set to " 600 ".In this case, confirm bitmap field 514a
3In first bit value (having bit position " 0 ") of affirmation bitmap pointed out to have the accepting state of the TID-1 frame of sequence number " 600 ".Confirm bitmap field 514a
3In other bit values (if any) of affirmation bitmap point out respectively to have from meeting the sequence control field 514a of the bit position of confirming bitmap
2The accepting state of frame of sequence number of sequence number skew.For example, if confirm bitmap field 514a
3In the position 4 of affirmation bitmap in bit value be asserted (that is, bit position 4 is set to " 1 "), the TID-1 frame that then has sequence number " 604 " is pointed out correctly to be received.
With reference now to Fig. 6,, is used for confirming that in shared resource network the schematic diagram of another embodiment of variable-length A-ACK frame 600 of the reception of Frame is illustrated.A-ACK frame 600 be used for for generation a plurality of TID data STA and be not equipped with traditional STA that any TID supports the two provide and confirms to support.A-ACK frame 600 comprises frame control field 602, duration field 604, RA field 606, variable length acknowledgment information field 608 and FCS610.The affirmation data that keep in the acknowledgement information field 608 can be formatted as the affirmation information of describing in the A-ACK frame 500 shown in the A-ACK frame 400 shown in Fig. 4 or Fig. 5 usually.That is, the affirmation information in the acknowledgement information field 608 may be implemented as the field groups that comprises TID identifier and sequence number respectively, and perhaps confirmation may be implemented as the field groups that comprises TID identifier, homing sequence number respectively and confirm bitmap field.In illustrative example, confirmation is implemented as TID identifier and corresponding number of frames in the block diagram of variable length acknowledgment information field form 608A.In addition, the affirmation packets of information in the acknowledgement information field 608 is drawn together a bit indicator, and whether the TID frame that this bit indicator specifies A-ACK frame 600 to be confirmed is associated with a TID.For example, acknowledgement information field 608 can format according to acknowledgement information field form 608a.Acknowledgement information field form 608a comprises bit field 614a and reserved bit field 614b.Bit field 614a can have a bit value (for example, " 0 "), and the frame that this bit value points out to have the frame accepting state that A-ACK frame 600 provides is associated with a TID.Therefore, acknowledgement information field 608 can comprise the quantity N with frame that A-ACK frame 600 confirmed value identifiers count field 614c and comprise N field groups of frame acknowledgement information.In this schematic diagram, N field groups comprises TID identifier field 614d respectively
1-614d
NWith a sequence control field 614e who is associated
1-614e
N
Perhaps, A-ACK frame 600 can be configured to provide confirmation for the frame that does not have the TID that is associated with it.For this reason, acknowledgement information field 608 is configured according to acknowledgement information field form 608b.Bit field 615a is configured to a bit value (for example, " 1 "), and it is unconnected that this bit value points out to have the frame and the TID of the frame accepting state that A-ACK frame 600 provides.In this case, acknowledgement information field 608 comprise reserved bit field 615b, point out to have A-ACK frame 600 defined accepting states number of frames N count field 615c and respectively sign be received N sequence control field 615d of the sequence number of frame
1-615d
NNotice that when bit field 615a has one when indicating the unconnected value of the frame confirmed and TID, acknowledgement information field form 608b does not comprise the field that is used to preserve the TID data.As mentioned above, A-ACK frame 600 can be configured to by comprising that one is supported TID or non-TID frame acknowledgment with reference to figure 5 described affirmation bitmaps above being similar to.
The affirmation information field of A-ACK frame described herein is adjustable length about as described in Fig. 4-6 as top, and promptly the concrete size of acknowledgement information field depends on the quantity of the frame that the A-ACK frame is confirmed.According to various embodiment described herein, the length of frame acknowledgement information can be defined in the A-ACK frame clearly or impliedly.
With reference now to Fig. 7,, the schematic diagram of another embodiment of A-ACK frame 700 is shown.A-ACK frame 700 comprises frame control field 702, duration field 704, receiver address (RA) field 706, variable length acknowledgment information field 708 and FCS710.In illustrative enforcement, variable length acknowledgment information field 708 comprises various son fields, comprises bit field 708a, reserved field 708b, count area 708c, optional TID identifier field 708d and selectable length field 708e (two all with dashed lines schematically point out), sequence control field 708f and confirms bitmap field 708g.The TID frame acknowledgement data is carried in one or more field groups, and described field groups comprises optional TID identifier field 708d and length field 708e, sequence control field 708f and bitmap field 708g.
If A-ACK frame 700 will provide and the relevant accepting state of non-TID frame, bit field 708a can be set to a particular value so, and bit value " 1 " for example is so that provide A-ACK frame 700 to comprise the indication of non-TID confirmation.In this structure, the value n of count area 708c is provided to the quantity (or the bitmap lengths among the bitmap field 708g) of the non-TID frame that specified bitmap field 708g confirmed, and can not comprise TID identifier field 708d and length field 708e.In this case, the affirmation bitmap among the bitmap field 708g can be any one in fixing or the variable-length.When being provided for the affirmation state of non-TID frame, comprising sequence control field 708f and confirm that the single instance of the field groups of bitmap field 708g is included in the A-ACK frame 700.
If A-ACK frame 700 will provide the accepting state relevant with the frame of one or more TID, bit field 708a can be set to a particular value so, bit value " 0 " for example is so that provide the indication of the affirmation information that A-ACK frame 700 comprises one or more TID.In this structure, the value n of count area 708c is provided to point out to have the quantity of the TID of the frame that A-ACK frame 700 confirmed, and the example of TID identifier field 708d and length field 708e is included in the acknowledgement information field 708 to be used to have each TID of the frame that A-ACK frame 700 confirmed.This illustrative example shows TID identifier field 708d, length field 708e, sequence control field 708f and confirms that the single instance of bitmap field 708g comes simplified illustration.When A-ACK frame 700 is provided for the affirmation information of frame of a plurality of TID, TID identifier field 708d, length field 708e, sequence control field 708f and confirm that a plurality of field groups of bitmap field 708g are included in the A-ACK frame 700, and each example of field groups all uniquely with n TID in one be associated.The length of the affirmation information that comprises among the bitmap field 708g is specified by the associated length field 708e of the affirmation information of a special TID.Advantageously, A-ACK frame 700 provides from the flexibility of the affirmation of 1 to 256*8 MPDU or MSDU.
With reference now to Fig. 8,, shows the frame sequence of exchange between initiator and the response station and the embodiment of aggregate acknowledgements.In illustrative example, the frame sequence 800 that comprises a plurality of frame 810a-812c is launched to the WLAN station 23 shown in response station, for example Fig. 1 in the WLAN station 20 shown in initiator, for example Fig. 1.Frame 810a-812c represent to comprise various traffic streams Medium Access Control (MAC) Protocol Data Unit frame and schematically be appointed as MPDUx-Y, wherein, X specified services stream and Y designated frame numbering.As cited herein, a frame subclass comprises a subclass of frame sequence and has the one or more frames that belong to given traffic streams.Therefore, a frame subclass that comprises three frame 810a-810c of Business Stream " 1 " is illustrated from initiator and is launched into the response station.Equally, the respective frame subclass of three frame 811a-811c of Business Stream " 2 " and " 3 " and 812a-812c is illustrated from initiator and is launched into the response station.
According to a preferred embodiment of the present invention, in response to the reception of frame sequence 800, variable-length A-ACK frame 820 of response station emission.A-ACK frame 800 is applicable to the frame (perhaps, with the unconnected frame of TID) of confirming one or more TID.As mentioned above, the field length that comprises the A-ACK frame 820 of the affirmation information relevant with the accepting state of frame sequence 800 depends on the quantity of the frame of the frame sequence 800 that is identified.Therefore, the length of A-ACK frame 820 (by isometrys such as bit, bytes) is variable and depends on the quantity of the frame that is identified.Therefore, the length L that consumes the duration of wireless medium resource (for example one or more channel) as A-ACK frame 820 depends on the quantity of the frame that A-ACK frame 820 is confirmed.
Though Fig. 8 has described single A-ACK and has been sent out and is used to confirm a plurality of TID that a station receives and a plurality of MPDU of each TID, but be understood that, under the situation that does not depart from spirit of the present invention, a variable length aggregate ACK frame can be sent out and be used for one group of one or more MPDU at each TID, and perhaps a polymerization ACK frame can be sent out and be used for one group of one or more MPDU at different TID.
As described, embodiment provides the mechanism that is used for producing in shared resource network the variable length aggregate acknowledgements frame.A plurality of frames are received, and the receiving status information relevant with a plurality of frames is generated.Produce an aggregate acknowledgement frames, it comprises an affirmation information field that comprises receiving status information.The length of receiving status information depends on the quantity of described a plurality of frames.
Although embodiment of the present disclosure is described in detail, yet it should be appreciated by those skilled in the art that and under the situation that does not break away from the spirit and scope of the present invention, to make different changes, displacement and change.Therefore, all these changes, displacement and change all are included in the scope of the present invention defined by the following claims.
Claims (30)
1. the method for a delta frame confirmation comprises:
Receive a plurality of frames;
Generate and the relevant receiving status information of described a plurality of frames; With
Produce an aggregate acknowledgement frames that comprises the affirmation information field with receiving status information, wherein, the length of receiving status information depends on the quantity of described a plurality of frames.
2. the process of claim 1 wherein, the step that receives a plurality of frames comprise reception respectively with a plurality of task identifiers in a plurality of frame subclass that are associated.
3. the method for claim 2, also be included in the acknowledgement information field generate respectively with a plurality of task identifiers in a plurality of field groups that are associated, wherein, each field groups all comprises the receiving status information of at least one sequence number and the frame of the task identifier that is associated, and wherein the length of the receiving status information of field groups depends on the quantity of the frame of the task identifier that is associated.
4. the method for claim 3, wherein, the receiving status information in each field groups comprises that is respectively confirmed a bitmap.
5. the method for claim 3, wherein, at least one sequence number that comprises in each field groups comprises the sequence number of first frame of the traffic associated identifier of the accepting state in the receiving status information with this field groups respectively.
6. the method for claim 3, also being included in the acknowledgement information field is that each field groups produces a corresponding length field, this length field has been specified the length of the receiving status information that comprises in this field groups.
7. the method for claim 1 also comprises the length of impliedly determining receiving status information.
8. the method for claim 1 also is included in and produces a count field in the acknowledgement information field, and this count field has been specified the quantity of the frame with the affirmation information that comprises in aggregate acknowledgement frames.
9. computer-readable medium with computer executable instructions of carrying out by computer system, this computer executable instructions is used to carry out the method for delta frame confirmation, and this computer executable instructions comprises:
First instruction, it receives a plurality of frames;
Second instruction, it generates and the relevant receiving status information of described a plurality of frames; With
The 3rd instruction, it produces an aggregate acknowledgement frames that comprises the affirmation information field with receiving status information, and wherein, the length of receiving status information depends on the quantity of described a plurality of frames.
10. the computer-readable medium of claim 9, wherein, a plurality of frames by first command reception comprise respectively with a plurality of task identifiers in a plurality of frame subclass that are associated.
11. the computer-readable medium of claim 10, also comprise the 4th instruction, its in acknowledgement information field, generate respectively with a plurality of task identifiers in a plurality of field groups that are associated, wherein, each field groups all comprises the receiving status information of at least one sequence number and the frame of the task identifier that is associated, and wherein the length of the receiving status information of field groups depends on the quantity of the frame of the task identifier that is associated.
12. the computer-readable medium of claim 11, wherein, the receiving status information in each field groups comprises that is respectively confirmed a bitmap data structure.
13. the computer-readable medium of claim 11, wherein, at least one sequence number that comprises in each field groups comprises the sequence number of first frame of the traffic associated identifier of the accepting state in the receiving status information with this field groups respectively.
14. the computer-readable medium of claim 11 also comprises the five fingers order, for each field groups produces a corresponding length field, this length field has been specified the length of the receiving status information that comprises in this field groups in acknowledgement information field for it.
15. the computer-readable medium of claim 9 also comprises the 4th instruction, it impliedly determines the length of receiving status information.
16. the computer-readable medium of claim 9 also comprises the 4th instruction, it produces the count field of the quantity of the frame that an appointment has the affirmation information that comprises in the aggregate acknowledgement frames in acknowledgement information field.
17. an equipment that is suitable for executive communication in shared resource network comprises:
Memory is suitable for storing a plurality of frames; With
Processing unit is suitable for generating the receiving status information relevant with described a plurality of frames and produces an aggregate acknowledgement frames that comprises the affirmation information field with receiving status information, and wherein, the length of receiving status information depends on the quantity of described a plurality of frames.
18. the equipment of claim 17, wherein, described a plurality of frames comprise respectively with a plurality of task identifiers in a plurality of frame subclass that are associated.
19. the equipment of claim 18, wherein, processing unit in acknowledgement information field, generate respectively with a plurality of task identifiers in a plurality of field groups that are associated, wherein, each field groups all comprises the receiving status information of at least one sequence number and the frame of the task identifier that is associated, and wherein, the length of the receiving status information of field groups depends on the quantity of the frame of the task identifier that is associated.
20. the equipment of claim 19, wherein, the receiving status information in each field groups comprises that is respectively confirmed a bitmap.
21. the equipment of claim 19, wherein, at least one sequence number that comprises in each field groups comprises the sequence number of first frame of the traffic associated identifier of the accepting state in the receiving status information with this field groups respectively.
22. the equipment of claim 17, wherein, processing unit produces a count field in acknowledgement information field, and it has specified the quantity of the frame with affirmation information included in the aggregate acknowledgement frames.
23. the equipment of claim 17, wherein, this equipment comprises a WLAN devices, and wherein acknowledgement frame comprises a media interviews control frame.
24. the equipment of claim 17 also comprises a shared resource interface, wherein, described equipment receives described a plurality of frames on the shared resource interface.
25. an equipment that is suitable for the delta frame confirmation comprises:
Be used to receive the device of a plurality of frames;
Be used to generate the device of the receiving status information relevant with described a plurality of frames; With
Be used to produce a device that comprises the aggregate acknowledgement frames of the affirmation information field with receiving status information, wherein, the length of receiving status information depends on the quantity of described a plurality of frames.
26. the equipment of claim 25, wherein, described a plurality of frame comprises first framing that is associated with first task identifier and second framing that is associated with second task identifier, this equipment also comprises the device that is used for generating in acknowledgement information field first field groups that is associated with first task identifier and second field groups that is associated with second task identifier, wherein, each field groups comprises the receiving status information of the frame of at least one sequence number and traffic associated identifier, and wherein the length of the receiving status information of field groups depends on the quantity of the frame of traffic associated identifier.
27. a system that is used for transfer of data comprises:
The cell site that comprises the shared resource interface, wherein, this cell site generates a plurality of frames and launches a plurality of frames by the shared resource interface on the shared resource medium; With
The receiving station that comprises the shared resource interface, it receives a plurality of frames, generates and the relevant receiving status information of described a plurality of frames, and produces an aggregate acknowledgement frames that comprises the affirmation information field with receiving status information, wherein, the length of receiving status information depends on the quantity of described a plurality of frames.
28. the system of claim 27, wherein, described a plurality of frame comprise respectively with a plurality of task identifiers in a plurality of frame subclass that are associated, wherein, receiving station in acknowledgement information field, generate respectively with a plurality of task identifiers in a plurality of field groups that are associated, wherein, each field groups all comprises the receiving status information of the frame of at least one sequence number and traffic associated identifier, and wherein the length of the receiving status information of field groups depends on the quantity of the frame of traffic associated identifier.
29. a memory of data that is used to store by the routine access of carrying out on the data handling system comprises:
Be stored in data structure in memory, comprise the information of the reception that is used to verify a plurality of frames, this data structure comprises:
With the relevant receiving status information of described a plurality of frames, wherein, the length of receiving status information depends on the quantity of described a plurality of frames; With
Aggregate acknowledgement frames comprises an affirmation information field with receiving status information.
30. the memory of claim 29, wherein, described a plurality of frame comprise respectively with a plurality of task identifiers in a plurality of frame subclass that are associated, this data structure also comprise in the acknowledgement information field, respectively with a plurality of task identifiers in a plurality of field groups that are associated, wherein, each field groups all comprises the receiving status information of the frame of at least one sequence number and traffic associated identifier, and wherein the length of the receiving status information of field groups depends on the quantity of the frame of traffic associated identifier.
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| CNA2005800278745A Pending CN101124762A (en) | 2004-07-30 | 2005-07-29 | System and method for variable length acknowledgements in a shared resource network |
| CN 200580027873 Pending CN101006673A (en) | 2004-07-30 | 2005-07-29 | System and method for variable length aggregate acknowledgements in a shared resource network |
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| CNA2005800278745A Pending CN101124762A (en) | 2004-07-30 | 2005-07-29 | System and method for variable length acknowledgements in a shared resource network |
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