CN101414896A

CN101414896A - Method, system and apparatus for movably receiving window

Info

Publication number: CN101414896A
Application number: CNA2007101760632A
Authority: CN
Inventors: 周玮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-10-18
Filing date: 2007-10-18
Publication date: 2009-04-22
Anticipated expiration: 2027-10-18
Also published as: CN101414896B

Abstract

The implementation mode of the invention provides a method for mobile receiving window, a system and a device thereof, belonging to the technical field of wireless network communication. The method for mobile receiving window comprises the following steps: according to the position of the ending of a service data unit which is deleted at last in a protocol data unit, a sender determines the mobile position information of receiving the window by a receiver, the sender sends the indication of mobile receiving window and the mobile position information to the receiver, the receiver determines the receiving window that needs to be moved according to the received indication of the mobile receiving window and moves the lower boundary of the receiving window according to the received mobile position information. The implementation mode of the invention simplifies the information of the mobile receiving window, which is informed of the receiver by the sender, thus saving the blank transmission resource.

Description

A kind of movably receiving window mthods, systems and devices

Technical field

The present invention relates to the wireless network communication technical field, be specifically related to a kind of movably receiving window method, system, dispensing device and receiving system.

Background technology

RLC in the communication system (Radio Link Control, Radio Link control) layer is mainly used in foundation, release service and data that data link is provided and sends.Data send promptly: receive SDU (the Service Data Unit that send on the upper strata, service data unit), according to MAC (Medium Access Control, the medium access control) transmission block (TB) size or predefined PDU (the Protocol DataUnit of layer indication, protocol Data Unit) size etc. is with the SDU segmentation and/or be cascaded into PDU, then, PDU is sent to the MAC layer.

Rlc layer exists three kinds of data transmission modes, i.e. transparent mode (TM), Unacknowledged Mode (UM) and affirmation mode (AM).

No matter adopt any data transmission modes, all be provided with transmit buffer on the rlc layer, be used for the SDU that send on the buffer memory upper strata.For send data with transparent mode and Unacknowledged Mode for, when PDU sent, corresponding SDU just can delete from transmit buffer; For send data with affirmation mode for, after the PDU side of being received confirmed to receive, corresponding SDU just can delete from transmit buffer.The corresponding SDU here is meant the complete SDU that comprises among the PDU; For example, be cascaded at several SDU under the situation of a PDU, if this PDU sends after (for transparent mode and Unacknowledged Mode)/recipient confirms to receive (for affirmation mode), several SDU of above-mentioned participation cascade delete from transmit buffer; Again for example, be segmented under the situation of several PDU at a SDU, all send at above-mentioned several PDU/after the recipient confirmed to receive, above-mentioned SDU by segmentation deleted from transmit buffer.

In some cases, the SDU that receives of rlc layer can not all send immediately; For example, when the transmission rate of RLCSDU is far longer than the transmission rate of eating dishes without rice or wine, can a large amount of SDU that do not send of storage in the transmit buffer of rlc layer.Because the size of transmit buffer is limited, therefore, spillover can appear in transmit buffer.For avoiding the influence of spillover, need in time abandon the SDU in the transmit buffer to follow-up air interface data transmission.After transmit leg abandoned SDU, corresponding PDU also can abandon.For AM, the recipient does not need the PDU that waits for that transmit leg has abandoned, and the recipient needs movably receiving window.

At present, the method for recipient's movably receiving window is:

The SDU information that transmit leg abandons needs is loaded into the control PDU of MRW SUFI (the super field of movably receiving window), and sends to the recipient.The recipient determines the shift position of receive window according to the SDU information that abandons, and movably receiving window, then, return the control PDU of MRW_ACK SUFI (movably receiving window responds super field), to confirm correct reception to the control PDU of MRW SUFI to transmit leg.

In the method for above-mentioned movably receiving window, the control PDU of MRW SUFI, the control PDU of MRW_ACK SUFI mainly contain following two kinds of forms:

The control PDU of form one, MRW SUFI is as shown in table 1, and the control PDU of MRW_ACK SUFI is as shown in table 2:

Table 1

Type＝MRW
Type＝MRW	LENGTH
SN_MRW ₁(optional)	LENGTH
SN_MRW ₁(optional)	SN_MRW ₂(optional)
... (optional)	SN_MRW ₂(optional)
... (optional)	SN_MRW _LENGTH
N_LENGTH	SN_MRW _LENGTH

Wherein: TYPE (type) represents movably receiving window; LENGTH (length) represents the number of the SN_MRW that comprises in this territory; The sequence number of AM PDU under the SDU ending that SN_MRW represents to abandon, and when transmit leg disposes " Send MRW ", then SN_MRW indicates the sequence number of the affiliated AM PDU of each SDU that abandons ending, when transmit leg did not dispose " Send MRW ", then SN_MRW indicated the sequence number of the affiliated AM PDU of last SDU that abandons ending; The SDU that N_LENGTH indicates last to abandon is positioned at SN_MRW _LENGTHIn which LI (Length Indication).

Table 2

Type＝MRW_ACK
Type＝MRW_ACK	N
SN_ACK	N

Wherein: TYPE (type) represents the affirmation of movably receiving window for MRW_ACK; N equals the N_LENGTH in the table 1; SN_ACK indication recipient receives the receive window position of upgrading behind the control PDU of MRW SUFI.

The control PDU of form two, MRW SUFI is as shown in table 3, and the control PDU of MRW_ACK SUFI is as shown in table 4:

Table 3

Type＝MRW
Type＝MRW	SN_MRW
N_LENGTH	SN_MRW

Wherein: the implication of TYPE, N_LENGTH in TYPE, N_LENGTH and the table 1 is identical; SN_MRW indicates the sequence number of the AMPDU under last SDU that abandons ending.

Table 4

Type＝MRW_ACK
Type＝MRW_ACK	SN?ACK

Wherein: the implication of TYPE, SN_ACK in TYPE, SN_ACK and the table 2 is identical.

In realizing process of the present invention, the inventor finds: there is the space of further simplifying in the information of carrying among the control PDU of the MRW SUFI that transmit leg sends; In addition, communication system such as LTE (Long TermEvolution, Long Term Evolution) PDU in the system can weigh dividing processing, i.e. the data of rlc layer transmission comprise PDU and PDU segmentation, and transmit leg is not considered the PDU segmentation when sending out the control PDU of MRW SUFI at present.

Summary of the invention

Embodiment of the present invention provides a kind of movably receiving window mthods, systems and devices, has simplified the information of notifying recipient's movably receiving window, has saved the transfer resource of eating dishes without rice or wine.

A kind of movably receiving window method that embodiment of the present invention provides comprises:

Transmit leg is determined the mobile location information of recipient's receive window according to the position of service data unit ending in protocol Data Unit of last deletion;

The described recipient of sending direction sends movably receiving window indication and described mobile location information;

The recipient determines the needs movably receiving window according to the described movably receiving window indication that receives, and according to the lower boundary of the described mobile location information movably receiving window that receives.

Embodiment of the present invention also provides a kind of movably receiving window system, comprising: transmit leg and recipient;

Described transmit leg comprises:

First module is used for recipient's receive window is determined in according to the service data unit of last deletion ending in the position of protocol Data Unit mobile location information;

Second module: be used for sending movably receiving window indication and the described mobile location information that first module is determined to described recipient;

Described recipient comprises:

Three module, the needs movably receiving window is determined in the described movably receiving window indication that is used for receiving according to the recipient, and the lower boundary of the mobile location information movably receiving window that receives according to the recipient.

Embodiment of the present invention also provides a kind of dispensing device, and described dispensing device comprises:

Second module: be used for sending movably receiving window indication and the described mobile location information that first module is determined, the lower boundary of receive window moved to described mobile location information place to indicate the recipient to the recipient.

Embodiment of the present invention also provides a kind of receiving system, and described receiving system comprises:

Three module, the needs movably receiving window is determined in the movably receiving window indication that is used for receiving according to receiving system, and the lower boundary of receive window is moved to the mobile location information place that the recipient receives.

Description by technique scheme as can be known, transmit leg is by sending movably receiving window indication and described mobile location information to the recipient, under the situation that the lower boundary that makes the recipient can directly carry out receive window moves, simplify the information of notifying recipient's movably receiving window, saved the transfer resource of eating dishes without rice or wine.

Description of drawings

Fig. 1 is the movably receiving window method schematic diagram of embodiment of the present invention;

Fig. 2 is the application scenarios schematic diagram one of embodiment of the present invention;

Fig. 3 is the application scenarios schematic diagram two of embodiment of the present invention;

Fig. 4 is the application scenarios schematic diagram three of embodiment of the present invention;

Fig. 5 is the application scenarios schematic diagram four of embodiment of the present invention;

Fig. 6 is the application scenarios schematic diagram five of embodiment of the present invention;

Fig. 7 is the application scenarios schematic diagram six of embodiment of the present invention;

Fig. 8 is the application scenarios schematic diagram seven of embodiment of the present invention;

Fig. 9 is the application scenarios schematic diagram eight of embodiment of the present invention.

Embodiment

The movably receiving window method that at first in conjunction with the accompanying drawings embodiment of the present invention is provided describes below.

The movably receiving window method flow of embodiment of the present invention as shown in Figure 1.

Among Fig. 1, step 1, for preventing phenomenons such as transmit buffer overflows, transmit leg abandons the SDU in the transmit buffer, i.e. SDU in the transmit leg deletion transmit buffer.Transmit leg can adopt time-based SDU discarding method or wait to determine to need SDU in the transmit buffer of deletion based on the SDU discarding method that restriction sends number of times, and deletion.Embodiment of the present invention does not limit the trigger condition of transmit leg deletion SDU, does not limit the specific implementation process of transmit leg deletion SDU yet.

Step 2, transmit leg are determined the mobile location information of recipient's receive window according to the position of SDU ending in PDU of last deletion.

To determine that the method for the mobile location information of recipient's receive window has multiple for transmit leg in the step 2, for example, when the SDU of last deletion ending when PDU ends up, transmit leg can be defined as the next PDU sequence number of this PDU the mobile location information of receive window; Under the situation that PDU is heavily cut apart, above-mentioned PDU ending can be the ending of last segmentation of PDU; Again for example, when the SDU of last deletion ended up not in PDU ending place, transmit leg can be defined as the sequence number of the PDU under the SDU ending of last deletion the mobile location information of receive window; Again for example, under the situation that PDU is heavily cut apart, when the SDU of last deletion ends up not in PDU ending place, and when belonging to segmentation of PDU, the mobile location information that transmit leg can be defined as receive window with sequence number and the deviation post information of SDU ending in original PDU of the PDU under this PDU segmentation is perhaps with the sequence number of the PDU under this PDU segmentation and SDU ending deviation post information and 1 the deviation post unit's sum mobile location information that is defined as receive window in original PDU; The original PDU here for carry out PDU heavily cut apart before PDU under the SDU ending.The above-mentioned concrete manifestation form that has only exemplified the mobile location information method of the receive window that several transmit legs determine and exemplified the mobile location information of the receive window that transmit leg determines, the mobile location information of the receive window in the embodiment of the present invention can also adopt other form of expression, and the transmit leg in the embodiment of the present invention also can adopt other method to determine the mobile location information of receive window.Embodiment of the present invention does not limit the concrete manifestation form of mobile location information, does not limit the method that transmit leg is determined the mobile location information of receive window yet.

Step 3, sending direction recipient send the mobile location information of movably receiving window indication and its receive window of determining.The mobile location information of movably receiving window indication and receive window can be generically and collectively referred to as: the information of notifying recipient's movably receiving window.

Transmit leg can send the mobile location information of movably receiving window indication and the receive window control PDU by MRW SUFI in the step 3 to the recipient.Certainly, embodiment of the present invention is not got rid of the possibility of the mobile location information of movably receiving window indication and receive window being passed through other control PDU transmission yet.

The control PDU that utilizes MRW SUFI when transmit leg can have multiple different implementation when the recipient sends the mobile location information of movably receiving window indication and receive window; For example, type among the control PDU of transmit leg MRWSUFI is set to MRW, with expression movably receiving window indication, the SN_MRW among the control PDU of MRWSUFI is set to the sequence number of the next PDU of the sequence number of PDU under the SDU ending of last deletion or this PDU; Again for example, the type of the control PDU of transmit leg MRW SUFI is set to MRW, with the indication of expression movably receiving window, SN_MRW is set to the PDU sequence number of the affiliated PDU segmentation of SDU ending of last deletion, and SO_MRW is set to SDU ending deviation post information among the original PDU under it of last deletion; Again for example, the type of the control PDU of transmit leg MRW SUFI is set to MRW_SN, utilize the PDU sequence number to come the movably receiving window indication of movably receiving window with expression, SN_MRW is set to the sequence number of the next PDU of the sequence number of PDU under the SDU ending of last deletion or this PDU; Again for example, the type of the control PDU of transmit leg MRW SUFI is set to MRW_SO, utilize deviation post information to come the movably receiving window indication of movably receiving window with expression, SN_MRW is set to the PDU sequence number of the affiliated PDU segmentation of SDU ending of last deletion, and SO_MRW is set to SDU ending deviation post information among the original PDU under it of last deletion; Again for example, configuration information continues indication between above-mentioned SN_MRW and SO_MRW, so that the recipient can obtain SN_MRW and SO_MRW easily, certainly, when not having SO_MRW, can so that can knowing among this control PDU, the recipient not carry deviation post information in configuration information after the SN_MRW by indication yet.Above-mentioned SO_MRW also can be set to SDU ending deviation post information among PDU and 1 skew statistical unit sum under it of last deletion.Specifically being applied in of the concrete manifestation form of the control PDU of MRW SUFI and different expression form hereinafter also has detailed introduction.

Step 4, recipient receive movably receiving window indication and above-mentioned mobile location information, after the recipient determined the needs movably receiving window according to movably receiving window indication, the recipient moved to the above-mentioned mobile location information place that receives with the lower boundary of receive window.

Because introduced the multiple form of expression of mobile location information in above-mentioned steps 2, step 3, therefore, the recipient should carry out corresponding receive window lower boundary move operation according to the different expression form of mobile location information.For example, when mobile location information was the sequence number of PDU, the recipient can be directly moves to this PDU sequence number place with the lower boundary of receive window; Again for example, when mobile location information is the sequence number of PDU and deviation post information, the recipient can be directly moves to this PDU sequence number place with the lower boundary of receive window, when recipient's receive window support advances based on the PDU segmentation, the recipient also can be directly the lower boundary of receive window is moved to PDU sequence number and deviation post information place or directly the lower boundary of receive window is moved to the PDU sequence number, deviation post information is offset statistical unit sum place with 1.In addition, recipient's method of obtaining mobile location information from the information that receives also has multiple; For example, the recipient is under the situation of the control PDU size that can learn MRWSUFI, and the recipient can accurately obtain PDU sequence number or PDU sequence number and deviation post information from the control PDU of MRW SUFI; Again for example, the recipient is under the situation of the control PDU size that can not learn MRW SUFI, and the recipient can continue to indicate PDU sequence number or PDU sequence number and the deviation post information of accurately obtaining by indication or information according to the information of PDU sequence number back; Also have, the recipient is under the situation of the control PDU size that can not know MRW SUFI, the recipient can accurately obtain the PDU sequence number according to MRW_SN from the control PDU of MRW SUFI, the recipient also can accurately obtain PDU sequence number and deviation post information according to MRW_SO from the control PDU of MRW SUFI.

Only exemplified several recipients in the above-mentioned steps 4 and obtained the mobile location information of receive window and recipient the lower boundary of receive window is moved to the method at mobile location information place, the recipient in the embodiment of the present invention also can adopt other method to obtain mobile location information and adopt other method to come the lower boundary of movably receiving window.Embodiment of the present invention does not limit the specific implementation process that the recipient obtains the mobile location information of receive window, does not limit the specific implementation process that the recipient moves to the lower boundary of receive window at the mobile location information place yet.

In addition, can also comprise step 5 among Fig. 1, promptly the recipient can also return the movably receiving window confirmation to transmit leg, and to notify transmit leg: the recipient successfully receives " information of notifying recipient's movably receiving window "; For example, the recipient returns to transmit leg that movably receiving window is replied indication, the lower boundary information of receive window after moving after the lower boundary with receive window moves to the mobile location information place; Certainly, the recipient also can be before receiving " information of notifying recipient's movably receiving window " and the lower boundary at movably receiving window, return to transmit leg that movably receiving window is replied indication, the lower boundary information of receive window after moving, at this moment, the lower boundary information of the receive window after the moving here is meant the lower boundary information of the receive window after the moving of expection.The mobile location information that the value of the lower boundary information of the receive window that the recipient returns after moving can receive for the recipient.

The particular content that the movably receiving window confirmation comprises can be and notify recipient's movably receiving window confirmation information corresponding, for example, comprises that movably receiving window replys indication and PDU sequence number; Again for example, comprise that movably receiving window replys indication, PDU sequence number and deviation post information; Again for example, comprise movably receiving window reply indication, PDU sequence number and information by the indication; Again for example, comprise that movably receiving window replys indication, PDU sequence number, information and continue indication and deviation post information; Can also comprise and utilize PDU sequence number movably receiving window to reply indication, PDU sequence number, perhaps comprise and utilize deviation post information movably receiving window to reply indication, PDU sequence number and deviation post information or the like.Embodiment of the present invention can adopt the control PDU of MRW_ACK SUFI to send the movably receiving window confirmation, and certainly, embodiment of the present invention is not got rid of the possibility that adopts other control PDU to send the movably receiving window confirmation yet.

Also have, in step 4 or step 5, the PDU that the recipient can also carry out successfully receiving is reassembled as SDU and is submitted to the operation on upper strata; For example, after receiving movably receiving window indication information and mobile location information and before the movably receiving window lower boundary, the current lower boundary of receive window is carried out the SDU reorganization to the PDU that successfully receives between the mobile location information, and the complete SDU after will recombinating is submitted to the upper strata.The PDU that success described herein receives can comprise PDU and PDU segmentation.The recipient of embodiment of the present invention can adopt existing the whole bag of tricks to carry out the operation that PDU is reassembled as SDU, and embodiment of the present invention does not limit the specific implementation process that the recipient is reassembled as PDU SDU.

Of particular note, in above-mentioned execution mode at Fig. 1 was described, the data cell that the upper strata is transferred to rlc layer and needs rlc layer to send was referred to as SDU, rlc layer is referred to as PDU to the data cell that low layer sends.The data cell that the upper strata is transferred to rlc layer and need rlc layer to send wins with other title; and/or the data cell that rlc layer is sent to low layer is titled with other title; so long as transmit leg transfers to the recipient with the mobile location information of movably receiving window indication and receive window, the method that the recipient moves to its mobile location information place that receives according to the movably receiving window indication with the lower boundary of receive window all belongs to the scope that the application's claim and specification are protected.

From the description of above-mentioned execution mode as can be known, embodiment of the present invention can utilize the control PDU of MRW SUFI transmit movably receiving window indication and mobile location information, can utilize the control PDU of MRW_ACK SUFI transmit movably receiving window reply indication and move after the lower boundary information of receive window.Below in conjunction with table, with four kinds of concrete example explanations utilize the control PDU of MRW SUFI transmit movably receiving window indication and mobile location information, utilize the control PDU of MRW_ACK SUFI transmit movably receiving window reply indication and move after the specific implementation of lower boundary information of receive window.

Example 1, as shown in table 5 based on the form of the control PDU of the MRW SUFI of PDU sequence number, as shown in table 5 based on the form of the control PDU of the MRW_ACK SUFI of PDU sequence number.

Table 5 is based on the control PDU of the MRW SUFI of PDU sequence number

TYPE＝MRW
TYPE＝MRW	SN_MRW

Wherein: TYPE (SUFI type) is set to MRW, the expression movably receiving window; After SN_MRW represents that the transmit leg execution abandons the SDU operation, wish the sequence number of the PDU that recipient's next one receives, i.e. the shift position of recipient's receive window lower boundary is wished in expression.

The value of SN_MRW can depend on that last SDU that abandons ending is positioned at the position of PDU in the table 5, that is: when last SDU that abandons ending just in time be a PDU ending, then SN_MRW equals the sequence number of the next PDU of order of the PDU under last SDU that abandons ending; When last SDU that abandons ends up is not a PDU ending, and then SN_MRW equals the sequence number of the affiliated PDU of last SDU that abandons ending.Here said PDU ending can comprise two kinds of situations, situation one, does not carry out the ending of the initial p DU that PDU heavily cuts apart, and initial p DU is former PDU; Situation two, carrying out under the situation that PDU heavily cuts apart the ending of last the PDU segmentation among the PDU.

Table 6 is based on the control PDU of the MRW_ACK SUFI of PDU sequence number

TYPE＝MRW_ACK
TYPE＝MRW_ACK	SN_ACK

Wherein, TYPE (SUFI type) is set to MRW_ACK, and the expression movably receiving window is replied indication; After SN_ACK represents that the recipient receives the control PDU of MRW SUFI, the mobile location information of receive window lower boundary.

Example 2, as shown in table 7 based on the form of the control PDU of the MRW SUFI of PDU skew, as shown in table 8 based on the form of the control PDU of the MRW_ACK SUFI of PDU skew.

Table 7 is based on the control PDU of the MRW SUFI of PDU skew

TYPE＝MRW
TYPE＝MRW	SN_MRW
SO_MRW	SN_MRW

Wherein, TYPE (SUFI type) is set to MRW, the expression movably receiving window; After SN_MRW represented that the transmit leg execution abandons the SDU operation, in the end a SDU ending that abandons was not under the situation of PDU ending, the PDU sequence number of the PDU segmentation under the ending of the SDU that last abandons; Situation about describing in PDU ending here as the above-mentioned execution mode.After SO_MRW represents that the transmit leg execution abandons the operation of SDU, the deviation post information among last SDU that abandons ending initial p DU under it.

Table 8 is based on the control PDU of the MRW_ACK SUFI of PDU skew

TYPE＝MRW_ACK
TYPE＝MRW_ACK	SN_ACK
SO_ACK	SN_ACK

Wherein, TYPE (SUFI type) is set to MRW_ACK, and the expression movably receiving window is replied indication; SN_ACK represents the SN of the PDU segmentation that recipient's next one begins to receive; The SN_ACK here is identical with SN_MRW in the table 7; SO_ACK represents that the PDU segmentation that recipient's next one begins to receive begins to set up SDU from skew for the position of SO_ACK; The value of the SO_ACK here is: the SO_MRW in the table 7 and 1 PDU skew statistical unit sum.1 PDU skew statistical unit is as 1 byte etc.SN_ACK and SO_ACK can be expressed as altogether: the mobile location information of receive window lower boundary.

When the recipient can be known the length of control PDU of control PDU, MRW_ACK SUFI of MRW SUFI, transmit leg can adopt any one mode in above-mentioned example 1, the example 2 to send the control PDU of MRW SUFI, the control PDU of MRW_ACK SUFI, and the recipient can accurately obtain movably receiving window indication, movably receiving window positional information from the control PDU that it receives.

Example 3, based on the form of the control PDU of the MRW SUFI of PDU skew shown in table 9, table 10, table 11, based on the form of the control PDU of the MRW_ACK SUFI of PDU skew shown in table 12, table 13, table 14.

Table 9 is based on the control PDU of the MRW SUFI of PDU skew

TYPE＝MRW
TYPE＝MRW	SN_MRW
E	SN_MRW
E	SO_MRW (optional)

Wherein: the implication of TYPE (SUFI type), SN_MRW, SO_MRW is identical with the implication of corresponding entry in the table 8; Whether E has carried SO_MRW after being used to indicate SN_MRW; The E value not simultaneously, the information that can be expressed as respectively continues indication by indication or information.Information does not have SO_MRW after indication can be expressed SN_MRW, information continuation indication also carries SO_MRW after can expressing SN_MRW.Promptly in the control PDU of MRW SUFI, SO_MRW is an option.

For example, when the E value was 0, expression information was by indication, and promptly the control PDU of MRW SUFI does not comprise SO_MRW, and at this moment, the form of the control PDU of MRW SUFI is as shown in table 10.

Table 10

TYPE＝MRW
TYPE＝MRW	SN_MRW
E＝0	SN_MRW

Again for example, when the E value was 1, expression information continued indication, and promptly the control PDU of MRW SUFI includes SO_MRW, and at this moment, the form of the control PDU of MRW SUFI is as shown in table 11.

Table 11

TYPE＝MRW
TYPE＝MRW	SN_MRW
E＝1	SN_MRW
E＝1	SO_MRW

Table 12 is based on the form of the control PDU of the MRW_ACK SUFI of PDU skew

TYPE＝MRW_ACK
TYPE＝MRW_ACK	SN_ACK
E	SN_ACK
E	SO_ACK (optional)

Wherein: the implication of TYPE, SN_ACK, SO_ACK is identical with the implication of corresponding entry in the table 8, and the implication of E is identical with the implication of corresponding entry in the table 9.

E value in the table 12 is 0 o'clock, can expression information end indication, and promptly the control PDU of MRW_ACK SUFI does not comprise SO_MRW, and at this moment, the form of the control PDU of MRW_ACK SUFI is as shown in table 13.

Table 13

TYPE＝MRW_ACK
TYPE＝MRW_ACK	SN_ACK
E＝0	SN_ACK

E value in the table 12 is 1 o'clock, can expression information continue indication, and promptly the control PDU of MRW_ACK SUFI comprises SO_MRW, and at this moment, the form of the control PDU of MRW_ACK SUFI is as shown in table 14.

Table 14

TYPE＝MRW_ACK
TYPE＝MRW_ACK	SN_ACK
E＝1	SN_ACK
E＝1	SO_ACK

When the recipient cannot be known the length of control PDU of control PDU, MRW_ACK SUFI of MRW SUFI, transmit leg can adopt the mode that exemplifies in the above-mentioned example 3 to send the control PDU of MRW SUFI, the recipient can adopt the mode that exemplifies in the above-mentioned example 4 to return the control PDU of MRW_ACK SUFI, and the recipient can accurately obtain the PDU sequence number or accurately obtain the PDU sequence number and deviation post information according to the E among the control PDU that receives.

Example 4, as shown in Table 15 based on the form of the control PDU of the MRW SUFI of PDU sequence number, form based on the control PDU of the MRW SUFI of PDU skew is shown in table 17, form based on the control PDU of the MRW_ACKSUFI of PDU sequence number is shown in table 16, and is shown in table 18 based on the form of the control PDU of the MRW_ACK SUFI of PDU skew.

Table 15 is based on the control PDU of the MRW SUFI of PDU sequence number

TYPE＝MRW_SN
TYPE＝MRW_SN	SN_MRW

Wherein: TYPE (SUFI type) is set to MRW_SN and still is the movably receiving window indication, but can further be expressed as the movably receiving window indication that utilizes the PDU sequence number to move; The implication of the corresponding entry in SN_MRW and the table 5 is identical.

The control PDU that table 16 is corresponding with table 15 based on the MRW_ACK SUFI of PDU sequence number

TYPE＝MRW_SN_ACK
TYPE＝MRW_SN_ACK	SN_ACK

Wherein: TYPE (SUFI type) is set to MRW_SN_ACK and still replys indication for movably receiving window, but can further be expressed as the movably receiving window that utilizes the PDU sequence number to move replys indication; The implication of the corresponding entry in SN_ACK and the table 6 is identical.

Table 17 is based on the control PDU of the MRW SUFI of PDU skew

TYPE＝MRW_SO
TYPE＝MRW_SO	SN_MRW
SO_MRW	SN_MRW

Wherein: TYPE (SUFI type) is set to MRW_SO and still is the movably receiving window indication, but can further be expressed as the movably receiving window indication that utilizes deviation post information to move; The implication of the corresponding entry in SN_MRW and the table 5 is identical, and the implication of the corresponding entry in SO_MRW and the table 7 is identical.

The control PDU that table 18 is corresponding with table 17 based on the MRW_ACK SUFI of PDU skew

TYPE＝MRW_SO_ACK
TYPE＝MRW_SO_ACK	SN_ACK
SO_ACK	SN_ACK

Wherein: TYPE (SUFI type) is set to MRW_SN_ACK and still replys indication for movably receiving window, but can further be expressed as the movably receiving window that utilizes deviation post information to move replys indication; The implication of the corresponding entry in SN_ACK and the table 6 is identical, and the implication of the corresponding entry in SO_ACK and the table 8 is identical.

When the recipient cannot know that the type definition of SUFI of the length of control PDU of control PDU, MRW_ACK SUFI of MRW SUFI and control PDU has unnecessary reserved field, transmit leg can adopt the mode that exemplifies in the above-mentioned example 4 to send the control PDU of MRW SUFI, the recipient can adopt the mode that exemplifies in the above-mentioned example 4 to send the control PDU of MRW_ACK SUFI, and the recipient can accurately obtain the PDU sequence number or accurately obtain the PDU sequence number and deviation post information according to MRW_SN, the MRW_SO among the control PDU that receives.Because example 4 can make the recipient accurately obtain PDU sequence number and deviation post information under the situation that does not increase control PDU extra field, therefore, the control PDU that exemplifies in the example 4 can not increase empty overhead.

Below in conjunction with accompanying drawing, and concrete application scenarios the movably receiving window method of embodiment of the present invention is described.

Execution mode one, based on the control PDU of the MRW SUFI of PDU sequence number, based on the control PDU of the MRW_ACK SUFI of PDU sequence number and the application scenarios that the recipient can be known control PDU length.

Setting SDU2 is the SDU of last deletion of recipient.SDU2 exists as accompanying drawing 2 to the multiple situation shown in the accompanying drawing 7 in the position among the PDU.

Among Fig. 2, SDU2 does not promptly exist cuts apart that also not have cascade, the ending of SDU2 be the ending of PDU2.

Among Fig. 3, there is cascade in SDU2, and promptly the part of SDU1 and SDU2 level are associated among the PDU2, and the ending of SDU2 is the ending of PDU2.

Among Fig. 4, SDU2 exists and cuts apart, and promptly the part of SDU2 is associated among the PDU1 with the SDU1 level, and another part of SDU2 is in PDU2, and the ending of SDU2 is the ending of PDU2.

Among Fig. 5, SDU2 exists and cuts apart, and promptly the part of SDU2 is associated among the PDU1 with the SDU1 level, and another part of SDU2 is in PDU2, and the ending of SDU2 is not the ending of PDU2.

Among Fig. 6, there is cascade in SDU2, and promptly the part level of the part of SDU1, SDU2 and SDU3 is associated among the PDU2, and the ending of SDU2 is not the ending of PDU2.

Among Fig. 7, SDU2 exists heavily to be cut apart, as SDU1, SDU2 at first level be associated among the PDU1, PDU1 heavily is divided into PDU1.seg1 and PDU1.seg2 again, the ending of SDU2 is the ending of last the PDU segmentation among the PDU.

Transmit leg is in the operation of having carried out deletion SDU2, when the recipient sends control PDU based on the MRWSUFI of PDU sequence number, and transmit leg is at first judged the position of SDU2 ending in PDU.

If it just in time is the ending of a PDU or the ending of last the PDU segmentation among PDU that transmit leg is determined SDU2 ending, i.e. position shown in Fig. 2,3,4,7, then transmit leg SN_MRW is set to the sequence number of the next PDU of order of the PDU under the SDU2 ending; As at Fig. 2,3,4, transmit leg SN_MRW is set to 3, and at Fig. 7, transmit leg SN_MRW is set to 2.

If it is not the ending of a PDU that transmit leg is determined SDU2 ending, i.e. position shown in Fig. 5,6, then transmit leg SN_MRW is set to the sequence number of the PDU under the SDU2 ending, and as at Fig. 5, Fig. 6, transmit leg SN_MRW is set to 2.

Transmit leg is set to MRW based on the TYPE among the MRW SUFI of PDU sequence number.

Need to prove, if transmit leg is before the control PDU of transmission based on the MRW SUFI of PDU sequence number, what receive that the recipient returns is that all of (comprising SN_MRW-1) are positioned at the affirmation information of the PDU of send window before the SN_MRW-1 to sequence number, be the position that the recipient has moved to the lower boundary of receive window SN_MRW, then transmit leg can not send the control PDU based on the MRW SUFI of PDU sequence number.

Transmit leg be provided with based on the TYPE among the control PDU of the MRW SUFI of PDU sequence number, and SN_MRW after, sending to the recipient will be based on the control PDU of the MRW SUFI of PDU sequence number.

The recipient judges the needs movably receiving window according to the TYPE among the control PDU behind the control PDU that receives based on the MRW SUFI of PDU sequence number.The recipient reads SN_MRW from control PDU then, finishes because the recipient after reading SN_MRW, has read control PDU, then can determine the control PDU that this control PDU is based on the MRW SUFI of PDU sequence number.

The recipient judges whether receive window lags behind the SN_MRW among the control PDU, and whether the lower boundary of promptly judging receive window is less than SN_MRW after having read SN_MRW.

If the lower boundary of judging receive window is less than SN_MRW, then the recipient carries out following operation:

1, the lower boundary with receive window carries out the SDU reorganization to all PDU that successfully receive between the SN_MRW, and complete SDU is submitted to the upper strata.

2, the lower boundary with receive window moves to the SN_MRW place.

3, set up control PDU, and return transmit leg based on the MRW_ACK SUFI of PDU sequence number.Wherein, based on the SN_ACK=SN_MRW among the control PDU of the MRW_ACK SUFI of PDU sequence number.

Afterwards, the recipient judges receiving sequence number when being the PDU of SN_MRW whether first byte of this PDU is first byte of a SDU, if, the then SDU reorganization operation after first byte of this PDU begins to carry out; If first byte of this PDU is not first byte of SDU, but last PDU segmentation of a last SDU, the SDU reorganization operation after then second SDU from this PDU or PDU segmentation begin to carry out.

If the recipient judges receive window and do not lag behind, promptly the lower boundary of receive window is more than or equal to the SN_MRW among the control PDU, and then the recipient is set up the control PDU based on the MRW_ACK SUFI of PDU sequence number, and returns transmit leg.Wherein, based on the SN_ACK=SN_MRW among the control PDU of the MRW_ACK SUFI of PDU sequence number.

Execution mode two, based on the control PDU of the MRW SUFI of PDU skew, can know that based on control PDU, the recipient of the MRW_ACK SUFI of PDU skew control PDU length and recipient do not support the application scenarios based on deviation post information movably receiving window.

Setting SDU2 is the SDU of last deletion of recipient.There is the situation shown in accompanying drawing 8, accompanying drawing 9 in SDU2 in the position among the PDU.

Among Fig. 8, SDU2 exists heavily to be cut apart, as SDU1, SDU2, SDU3 at first level be associated among the PDU1, PDU1 heavily is divided into PDU1.seg1 and PDU1.seg2 again, the ending of SDU2 is the ending of PDU1.seg1, but is not the ending of last the PDU segmentation among the PDU.

Among Fig. 9, SDU2 exists and heavily cuts apart, as the part of SDU1, SDU2, SDU3, SDU4 at first level be associated among the PDU1, PDU1 heavily is divided into PDU1.seg1, PDU1.seg2 and PDU1.seg3 again, the ending of SDU2 is not the ending of any one the PDU segmentation among the PDU.

Transmit leg is in the operation of having carried out deletion SDU2, when the recipient sends the control PDU of the MRWSUFI that is offset based on PDU, and transmit leg is at first judged the position of SDU2 ending in PDU.

Because position such as Fig. 8, shown in Figure 9 of SDU2 ending, the ending that is SDU2 is not the ending of PDU (comprising not being the ending of last PDU segmentation among the PDU), therefore, transmit leg SN_MRW is set to the PDU sequence number of the PDU segmentation under the SDU2 ending, promptly is set to 1.

Transmit leg is set to MRW, SO_MRW based on the TYPE among the MRW SUFI of PDU skew and is set to deviation post information among the initial p DU of SDU2 before heavily cutting apart.

Need to prove, if transmit leg is before the control PDU that sends the MRW SUFI that is offset based on PDU, receive sequence number that the recipient returns and be SN_MRW, skew and be positioned at the PDU of send window, the confirmation of receipt information of PDU segmentation for before the SO_MRW all, be the position that the recipient has moved to the lower boundary of receive window SN_MRW, then transmit leg can not send the control PDU based on the MRW SUFI of PDU skew.

Transmit leg be provided with based on TYPE, SN_MRW among the control PDU of the MRW SUFI of PDU skew, and SO_MRW after, sending to the recipient will be based on the control PDU of the MRW SUFI of PDU skew.

The recipient judges the needs movably receiving window according to the TYPE among the control PDU behind the control PDU that receives the MRW SUFI that is offset based on PDU.The recipient reads SN_MRW from control PDU then, because the recipient is after reading SN_MRW, do not read control PDU ending, be that SN_MRW also has data afterwards, then the recipient can determine the control PDU that this control PDU is based on the MRW SUFI of PDU skew, therefore, the recipient continues to read SO_MRW.

The recipient judges whether receive window lags behind the SN_MRW among the control PDU, and whether the lower boundary of promptly judging receive window is less than SN_MRW after having read SN_MRW, SO_MRW.

2, the lower boundary with receive window moves to the SN_MRW place.

3, set up the control PDU of the MRW_ACK SUFI that is offset based on PDU, and return transmit leg.Wherein, based on the SN_ACK=SN_MRW among the control PDU of the MRW_ACK SUFI of PDU skew, SO_ACK=SO_MRW+1 skew statistical unit (being offset statistical unit such as byte).

If it is SN_MRW, the PDU segmentation of skew before SO_MRW that the recipient does not receive the PDU sequence number, then the recipient can no longer require transmit leg to retransmit the PDU segmentation.

If receive sequence number after the recipient when being the PDU of SN_MRW, then the recipient begins to carry out the SDU reorganization and operates from SO_ACK after.

If the recipient judges receive window and do not lag behind, promptly the lower boundary of receive window is more than or equal to the SN_MRW among the control PDU, and then the recipient is set up the control PDU based on the MRW_ACK SUFI of PDU skew, and returns transmit leg.Wherein, based on the SN_ACK=SN_MRW among the control PDU of the MRW_ACK SUFI of PDU skew, SO_ACK=SO_MRW+1 skew statistical unit (being offset statistical unit such as byte).And, be SN_MRW, the PDU segmentation of skew before SO_MRW if the recipient does not receive the PDU sequence number, then the recipient can no longer require transmit leg to retransmit the PDU segmentation.

Execution mode three, based on the control PDU of the MRW SUFI of PDU skew, can know that based on control PDU, the recipient of the MRW_ACK SUFI of PDU skew control PDU length and recipient support the application scenarios based on deviation post information movably receiving window.The support is here promptly supported to advance receive window based on PDU and PDU segmentation based on deviation post information movably receiving window.

The operation that transmit leg in operation that transmit leg in the execution mode three carries out and the execution mode two carries out is basic identical, in this no longer repeat specification.

The recipient judges whether receive window lags behind SN_MRW and the SO_MRW among the control PDU, and whether the lower boundary of promptly judging receive window is less than SN_MRW after having read SN_MRW, SO_MRW.

If the lower boundary of judging receive window is less than SN_MRW, perhaps the lower boundary of receive window equal SN_MRW but the skew of receive window less than SO_MRW, then the recipient carries out following operation:

1, the lower boundary with receive window is that SN_MRW, skew are carried out the SDU reorganization for all PDU that successfully receive between the SO_MRW position, and complete SDU is submitted to the upper strata to the PDU sequence number.

2, the lower boundary with receive window moves to SN_MRW, skew is SO_MRW+1 PDU skew statistical unit place.

If receive the PDU segmentation that sequence number is SN_MRW after the recipient, then the recipient begins to carry out SDU reorganization operation after SO_ACK.

If the recipient judges receive window and does not lag behind, the lower boundary that is receive window equals the skew of SN_MRW and receive window more than or equal to SO_MRW greater than the SN_MRW among the control PDU or the lower boundary of receive window, then the recipient is set up the control PDU based on the MRW_ACK SUFI of PDU skew, and returns transmit leg.Wherein, based on the SN_ACK=SN_MRW among the control PDU of the MRW_ACK SUFI of PDU skew, SO_ACK=SO_MRW+1 is offset statistical unit.

From the description of said method execution mode as can be seen, transmit leg can send " information of notifying recipient's movably receiving window " in several ways, and, by making " information of notifying recipient's movably receiving window " comprise movably receiving window indication and receive window mobile location information, simplified the information that the sending direction recipient sends, simultaneously, the receive window mobile location information has made things convenient for the operation of recipient's movably receiving window.In addition, the several different methods execution mode can be applied in the different application scenarioss, for example, receive window support/do not support to advance or the like based on the PDU segmentation, implementation is flexible, and satisfied the demand of the movably receiving window of heavily cutting apart application scenarios that includes but not limited to LTE system etc., improved the adaptability of movably receiving window.

The movably receiving window system that embodiment of the present invention is provided describes below.

The movably receiving window system that embodiment of the present invention provides comprises: transmit leg and recipient, and transmit leg comprises first module and second module; The recipient comprises three module.First module and second module can all be positioned at rlc layer.

The SDU ending that first module is used for determining last deletion then, is determined the mobile location information of the lower boundary of recipient's receive window in the position of PDU according to the position of SDU ending in PDU of last deletion.Position, the mobile location information of SDU ending in PDU here can be diversified, and determine that according to the SDU ending position in PDU the specific implementation process of the mobile location information of receive window also can be diversified, the description in the concrete as above-mentioned method execution mode.

Second module is used to receive movably receiving window indication and the mobile location information that first module is determined, and sends its movably receiving window that receives indication and mobile location information to the recipient.The mobile location information of movably receiving window indication and receive window can be generically and collectively referred to as: the information of notifying recipient's movably receiving window.Second module can be sent to low layer with the mobile location information of movably receiving window indication and the receive window control PDU by MRWSUFI, is sent to the recipient by low layer.Certainly, embodiment of the present invention is not got rid of the possibility that second module is passed through the mobile location information of movably receiving window indication and receive window other control PDU transmission yet.The control PDU that utilizes MRW SUFI when second module can have multiple different implementation, specifically as the description in the above-mentioned method execution mode when the recipient sends the mobile location information of movably receiving window indication and receive window.

Three module is used for after judging the recipient and receiving movably receiving window indication, and determining needs movably receiving window, then, and the lower boundary of the mobile location information movably receiving window that three module receives according to the recipient.Because second module can adopt different ways to send the mobile location information of movably receiving window indication and receive window, therefore, the recipient is when receiving the information that transmit leg sends, can adopt multiple diverse ways to obtain mobile location information, concrete as the description in the above-mentioned method execution mode.

First module in the system implementation mode of the present invention can comprise judges submodule and definite submodule.

Judge that submodule is used to judge that the SDU of last deletion ends up in the position of PDU, and the output judged result; Judge submodule output judged result can for: the SDU ending of last deletion is in the end position of PDU, and the ending of the PDU here has two kinds of different situations, the description in the concrete as above-mentioned method execution mode; Judged result also can for the SDU ending of: last deletion not in the end position of PDU, judged result can also for: the SDU ending of last deletion in the non-end position of PDU and be arranged in the protocol Data Unit segmentation.The judgement submodule judges that the SDU ending of last deletion is in the object lesson of the position of PDU such as the description in the above-mentioned method execution mode.

The judged result of judging submodule output is that the SDU of last deletion ends up when the end position of PDU, determines that submodule is defined as mobile location information with the sequence number of the next protocol Data Unit of protocol Data Unit under the ending of this SDU.

The judged result of judging submodule output is that the SDU of last deletion ends up not when the end position of PDU, determines that submodule is defined as mobile location information with the sequence number of PDU under this SDU ending.

The judged result of judging submodule output for the SDU ending of last deletion in the non-end position of PDU and when being arranged in the PDU segmentation, determine that submodule is defined as mobile location information with sequence number and the SDU ending of the PDU under this PDU segmentation in the deviation post information of initial p DU.Certainly, the deviation post information here also can replace with deviation post information and a skew statistical unit sum.

Determine that submodule determines the multiple implementation of mobile location information such as the description in the above-mentioned method execution mode.In this no longer repeat specification.

The difference of the specific implementation of the information of notifying recipient's movably receiving window that sends according to second module, above-mentioned second module can comprise that first sends submodule, second and send submodule, the 3rd and send submodule and the 4th and send one or more in the submodule.

First sends submodule is used for sending the PDU sequence number of utilizing the movably receiving window indication that the PDU sequence number moves and first module to be defined as mobile location information to the recipient.First content that sends the submodule transmission can be shown in table 5, table 15.

Second sends submodule is used for sending movably receiving window indication that deviation post information moves and protocol Data Unit sequence number and the deviation post information that is defined as mobile location information utilized to the recipient.Second content that sends the submodule transmission can be shown in table 7,17.

The 3rd transmission submodule is used for sending PDU sequence number and the information that movably receiving window is indicated, first module is defined as mobile location information to the recipient and ends indication.The 3rd content that sends the submodule transmission can be as shown in table 10.

The 4th send submodule be used for to the recipient send the protocol Data Unit sequence number of the mobile location information that movably receiving window indication, first module determine, deviation post information and the information in the mobile location information continues indication.The 4th content that sends the submodule transmission can be shown in table 11,14.

The difference of the specific implementation of the information of notifying recipient's movably receiving window that receives according to three module, above-mentioned three module can comprise that first adjusts submodule, second and adjust submodule, the 3rd and adjust submodule and the 4th and adjust one or more in the submodule.

First adjusts submodule is used for the movably receiving window indication that utilizes the PDU sequence number to move that receives according to the recipient, and the lower boundary of receive window is moved to the PDU sequence number place that the recipient receives.First adjusts submodule can also carry out the PDU reorganization, and to the operation of transmit leg echo reply information.Concrete PDU regrouping process, the content of echo reply information are like the description in the said method execution mode.

Second adjusts submodule is used for indicating according to the movably receiving window that utilizes deviation post information to move that the recipient receives, under the situation of not supporting to advance at receive window, the lower boundary of receive window is moved to PDU sequence number and the deviation post information place that the recipient receives based on the PDU segmentation; Perhaps under the situation that the receive window support advances based on the PDU segmentation, the second adjustment submodule moves to PDU sequence number, deviation post information and a skew statistical unit sum place with the lower boundary of receive window.Second adjusts submodule can also carry out the PDU reorganization, and to the operation of transmit leg echo reply information.Concrete PDU regrouping process, the content of echo reply information are like the description in the said method execution mode.

The information that the movably receiving window that the 3rd adjustment submodule is used for receiving according to the recipient indicates and end indication to receive from the recipient is obtained the protocol Data Unit sequence number as mobile location information, and the lower boundary of receive window is moved to described protocol Data Unit sequence number place.The 3rd adjusts submodule can also carry out the PDU reorganization, and to the operation of transmit leg echo reply information.Concrete PDU regrouping process, the content of echo reply information are like the description in the said method execution mode.

The information that the movably receiving window that the 4th adjustment submodule is used for receiving according to the recipient is indicated, information continuation indication receives from the recipient is obtained protocol Data Unit sequence number and the deviation post information as mobile location information, under the situation of not supporting to advance based on the PDU segmentation at receive window, the 4th adjusts submodule can move to the lower boundary of receive window PDU sequence number place; Under the situation that the receive window support advances based on the PDU segmentation, the 4th adjusts submodule can move to the lower boundary of receive window PDU sequence number, deviation post information and a skew statistical unit sum place.The 4th adjusts submodule can also carry out the PDU reorganization, and to the operation of transmit leg echo reply information.Concrete PDU regrouping process, the content of echo reply information are like the description in the said method execution mode.

Description in receiving system that embodiment of the present invention provides and dispensing device such as the above-mentioned system implementation mode is in this no longer repeat specification.

Though described the present invention by embodiment, one skilled in the art will appreciate that the present invention has many distortion and variation and do not break away from spirit of the present invention, the claim of application documents of the present invention comprises these distortion and variation.

Claims

1, a kind of movably receiving window method is characterized in that, described method comprises:

2, the method for claim 1 is characterized in that, described transmit leg determines that the step of the mobile location information of receive window comprises:

Transmit leg is according to the definite protocol Data Unit sequence number as mobile location information in the position of service data unit ending in protocol Data Unit of last deletion; Or

Transmit leg is according to the position of service data unit ending in protocol Data Unit definite the protocol Data Unit sequence number and the deviation post information as mobile location information of last deletion.

3, method as claimed in claim 2 is characterized in that, described transmit leg is determined to comprise as the step of the protocol Data Unit sequence number of mobile location information according to the position of the service data unit of last deletion ending in protocol Data Unit:

When the end position of the service data unit of last deletion ending at protocol Data Unit, then transmit leg with the sequence number of the next protocol Data Unit of protocol Data Unit under this service data unit ending as mobile location information; Or

When the ending of the service data unit of last deletion not in the end position of protocol Data Unit, then transmit leg with the sequence number of protocol Data Unit under this service data unit ending as mobile location information.

4, method as claimed in claim 2, it is characterized in that described transmit leg is determined to comprise as the protocol Data Unit sequence number of mobile location information and the step of deviation post information according to the position of service data unit ending in protocol Data Unit of last deletion:

When the ending of the service data unit of last deletion in the non-end position of protocol Data Unit and be arranged in the protocol Data Unit segmentation, then transmit leg with the deviation post information of the sequence number of the protocol Data Unit under this protocol Data Unit segmentation and the ending of described service data unit as mobile location information.

5, method as claimed in claim 2 is characterized in that, the step that the described recipient of described sending direction sends movably receiving window indication and described mobile location information comprises:

The described recipient of sending direction sends movably receiving window indication and the described protocol Data Unit sequence number as mobile location information of utilizing the protocol Data Unit sequence number to move; Or

The described recipient of sending direction sends and utilizes movably receiving window indication that deviation post information moves and as the protocol Data Unit sequence number and the deviation post information of mobile location information; Or

The described recipient of sending direction sends the movably receiving window indication, described protocol Data Unit sequence number and information as mobile location information is ended indication; Or

Protocol Data Unit sequence number, information that the described recipient of sending direction sends in movably receiving window indication, the described mobile location information continue the deviation post information in indication and the described mobile location information.

6, method as claimed in claim 2 is characterized in that, the step that described lower boundary with receive window moves to the described mobile location information place that receives comprises:

When recipient's receive window support advanced based on the PDU segmentation, the recipient moved to the described protocol Data Unit sequence number that receives and deviation post information and a skew statistical unit sum place with the lower boundary of receive window; Or

When recipient's receive window was not supported to advance based on the PDU segmentation, the recipient moved to the described protocol Data Unit sequence number place that receives with the lower boundary of receive window.

7, method as claimed in claim 2 is characterized in that, described method also comprises:

The receive direction transmit leg return movably receiving window reply indication and move after the lower boundary information of receive window;

The lower boundary information of the receive window after described the moving comprises: the protocol Data Unit sequence number; Or protocol Data Unit sequence number, deviation post information and a skew statistical unit sum; Or protocol Data Unit sequence number and information are by indication; Or protocol Data Unit sequence number, information continuation indication, deviation post information and a skew statistical unit sum.

8, a kind of movably receiving window system, comprising: transmit leg and recipient is characterized in that:

Described transmit leg comprises:

Described recipient comprises:

9, a kind of dispensing device is characterized in that, described dispensing device comprises:

Second module: be used for sending movably receiving window indication and the described mobile location information that first module is determined, the lower boundary of receive window moved to described mobile location information place to indicate the recipient to described recipient.

10, device as claimed in claim 9 is characterized in that, described first module comprises:

Judge submodule, the service data unit ending that is used to judge last deletion is in the position of protocol Data Unit, and the output judged result;

Determine submodule, be used in the judged result of judging submodule output during, the sequence number of the next protocol Data Unit of protocol Data Unit under the ending of this service data unit is defined as mobile location information for the service data unit ending of last deletion end position at protocol Data Unit; Or

In the judged result of judging submodule output be the service data unit ending of last deletion not during the end position at protocol Data Unit, and the sequence number of the affiliated protocol Data Unit of this service data unit ending is defined as mobile location information; Or

The judged result of judging submodule output for the service data unit ending of last deletion in the non-end position of protocol Data Unit and when being arranged in the protocol Data Unit segmentation, the sequence number of the protocol Data Unit under this protocol Data Unit segmentation and the deviation post information of described service data unit ending are defined as mobile location information.

As claim 9 or 10 described dispensing devices, it is characterized in that 11, described second module comprises following one or more:

First sends submodule, is used for sending movably receiving window indication and the described protocol Data Unit sequence number that is defined as mobile location information of utilizing the protocol Data Unit sequence number to move to described recipient;

Second sends submodule, is used for the protocol Data Unit sequence number and the deviation post information of indicating and being defined as mobile location information to the movably receiving window that described recipient's transmission utilizes deviation post information to move;

The 3rd sends submodule, is used for sending movably receiving window indication, the described protocol Data Unit sequence number that is defined as mobile location information and information by indication to described recipient;

The 4th sends submodule, and the protocol Data Unit sequence number, the information that are used for sending to described recipient movably receiving window indication, described mobile location information continue the deviation post information in indication and the mobile location information.

12, a kind of receiving system is characterized in that, described receiving system comprises:

13, device as claimed in claim 12 is characterized in that, described three module comprises following one or more:

First adjusts submodule, is used for the movably receiving window indication that utilizes the protocol Data Unit sequence number to move that receives according to the recipient, and the lower boundary of receive window is moved to the protocol Data Unit sequence number place that the recipient receives;

Second adjusts submodule, is used for the movably receiving window indication that utilizes deviation post information to move that receives according to the recipient, and the lower boundary of receive window is moved to protocol Data Unit sequence number and the deviation post information place that the recipient receives;

The 3rd adjusts submodule, the information that the movably receiving window that is used for receiving according to the recipient indicates and end indication to receive from the recipient is obtained the protocol Data Unit sequence number as mobile location information, and the lower boundary of receive window is moved to described protocol Data Unit sequence number place;

The 4th adjusts submodule, the information that the movably receiving window that is used for receiving according to the recipient is indicated, information continuation indication receives from the recipient is obtained protocol Data Unit sequence number and the deviation post information as mobile location information, and the lower boundary of receive window is moved to described protocol Data Unit sequence number place or moves to described protocol Data Unit sequence number and deviation post information place.