CN101944984B - Transmission method of protocol data unit and system thereof - Google Patents
Transmission method of protocol data unit and system thereof Download PDFInfo
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- CN101944984B CN101944984B CN201010282504.9A CN201010282504A CN101944984B CN 101944984 B CN101944984 B CN 101944984B CN 201010282504 A CN201010282504 A CN 201010282504A CN 101944984 B CN101944984 B CN 101944984B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/187—Details of sliding window management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/188—Time-out mechanisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
Abstract
The invention discloses a transmission method of a protocol data unit (PDU) and a system thereof. The transmission method comprises the following steps: taking maximum send state variable VT (MS) as a top of a sending window for a radio link control (RLC) layer entity, starting a polling retransmission timer after sending the acknowledged mode data (AMD) PDU carrying poll, then judging whether the send state variable VT (S) of the sending window is equal to VT (MS) in the event that the polling retransmission timer is overtime, and if yes, informing a radio resource control layer of initiating link reconstruction. In the invention, when the polling retransmission timer is overtime, the RLC layer entity judges whether VT (S) is equal to VT (MS), and if yes, the PLC layer entity informs the radio resource control layer of initiating link reconstruction. Therefore, bandwidth is effectively utilized to a greater extent, delay for the reconstruction initiation process is reduced and severe transmission environment is improved timely without affecting the ARQ process.
Description
Technical field
The present invention relates to radio digital communication technical field, relate in particular to a kind of transmission method and system of protocol Data Unit.
Background technology
Universal mobile telecommunications system (the Universal Mobile Telecommunications System of evolution, UMTS) terrestrial radio Access Network (Evolved UMTS Terrestrial Radio Access Network, E-UTRAN) wireless link control (Radio Link Control, RLC) layer comprises the RLC entity of three types: transparent mode (Transparent Mode, TM), Unacknowledged Mode (UnacknowledgedMode, and affirmation mode (Acknowledged Mode, AM) UM).Wherein, AM RLC entity utilizes HARQ (Automatic Retransmission Request, ARQ) mechanism that reliable data transmission service is provided.
Under AM pattern, RLC entity transmitter side safeguards that according to state variable VT (A) and VT (MS) sends a window, and the absolute offset values between VT (A) and VT (MS) is 512.As MAC (the Media Access Control that submits to a new acknowledged mode data protocol Data Unit (AMD PDU) to its lower floor, media access control) when layer, AM RLC entity (transmitter side) is VT (S) by the sequence number (SN) of putting AMD PDU, add 1, VT (S) variation in the scope of VT (A) and VT (MS) then to VT (S).ARQ mechanism makes reciprocity RLC entity can send status protocol data cell (STATUS PDU), wherein, if comprised, SN is dropped on to [VT (A), VT (S)) AMD PDU in scope or the negative confirmation of its part, AM RLC entity thinks that peer-entities receiver side does not receive this AMD PDU or its part, thereby needs to retransmit.If being the AMD PDU of VT (A), SN obtains positive confirmation, it is [VT (A) that AMRLC entity transmitter side will upgrade VT (A), VT (S)) be not identified the minimum SN of reception in scope, upgrade VT (MS) simultaneously.
The situation that triggers AM RLC entity transmission STATUS PDU has two kinds, be that state variable VR (H) in receiver window is greater than VR (R) and causes t_Reordering (timer a reorders) timer expiry of opening, can trigger transmitter side and send STATUS PDU; Another kind is to receive the AMD PDU that poll flag bit (poll) is 1, and now t_StatusProhibit (Status Disable timer) does not start, and triggers transmitter side and sends STATUS PDU.
In ARQ mechanism in rlc layer, after transmitter side has sent the AMD PDU or AMD PDU segment of rlc layer, it is all empty sending buffering area and retransmission buffer (do not comprise and sent the also RLC data PDU of wait acknowledge), or send cannot send new rlc layer AMD PDU after AMD PDU time owing to sending the restriction of window, to in the AMD PDU of the rlc layer finally sending, comprise a poll, and after sending this PDU, start a poll retransmission timer, if after poll retransmission timer is overtime, and while meeting one of situation of the PDU that above two kinds of transmissions comprise poll, will think that the AMD PDU that SN equals VT (S)-1 needs to retransmit, or think that any AMD PDU that does not obtain positive confirmation needs to retransmit, and retransmit this AMD PDU, comprise a poll simultaneously.
When uplink packet containing AMD PDU mono-straight hair of poll less than reciprocity RLC entity or descending while can not receive the STATUS PDU that peers include both RLC entity sends always, VT (A) at the bottom of transmission window window just can not upgrade always, if there is new AMD PDU to send always, VT (S) just arrives window top VT (MS) very soon, makes to send new AMD PDU.
But the status transmission that above-mentioned upstream or downstream are severe, must wait until that sending reconstruction message to RRC just can be improved.After last AMD PDU that can send of transmission window (containing poll) sends, can only wait until that poll retransmission timer is overtime causes that last AMD PDU retransmits (containing poll), and again start poll retransmission timer, then again cause because poll retransmission timer is overtime again and retransmit this AMD PDU, in the time that this bag number of retransmissions reaches re-transmission thresholding (maxRetxThreshold), will initiate to retransmit failed message to RRC, cause that RRC initiates process of reconstruction.Can, because of the restriction of the duration of poll retransmission timer and re-transmission thresholding, cause the severe status transmission of upstream or downstream that the longer time occurs like this.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of transmission method and system of protocol Data Unit, solves the restriction because of timing length and the re-transmission thresholding of poll retransmission timer, causes severe status transmission to continue the problem of long period.
For solving the problems of the technologies described above, the transmission method of a kind of protocol Data Unit of the present invention, comprising:
Wireless link control rlc layer entity is using maximum send state variable VT (MS) as the window top that sends window, carry in transmission after the acknowledged mode data AMD protocol Data Unit PDU of poll flag bit, start poll retransmission timer, in the situation that this poll retransmission timer is overtime, judge whether the send state variable VT (S) that sends window equals VT (MS), if so, notify radio resource control layer to initiate link re-establishment.
Further, rlc layer entity is to send window definition to start the original position variable V T (P) of transmission poll continuously, the value of this VT (P) is VT (MS)-NP, and this NP is the maximum quantity that allows the AMD PDU that carries poll flag bit sending continuously;
The step that transmission carries the AMD PDU of poll flag bit comprises:
Judge VT (S) whether [VT (P), VT (MS)) in, if so, in AMD PDU, carry poll flag bit, send this and carry the AMD PDU of poll flag bit.
Further, rlc layer entity is using acknowledgement state variable V T (A) as at the bottom of sending the window of window;
The step that transmission carries the AMD PDU of poll flag bit also comprises:
At VT (S) not at [VT (P), VT (MS)) when interior, judge that whether this VT (S) is at [VT (A), VT (P)) in, if, upgrade containing individual counter of the protocol Data Unit of poll and do not contain the byte counter of data field in the protocol Data Unit of poll, whether the count value that judges these two counters is greater than corresponding counting thresholding, in the time that one of them count value of these two counters is greater than corresponding counting thresholding, in AMD PDU, carry poll flag bit, send this and carry the AMD PDU of poll flag bit.
Further, the value of NP is that the re-transmission thresholding of AMD PDU adds 1.
Further, the method also comprises:
VT (S) not [VT (A), VT (P)) when interior, rlc layer entity notice radio resource control layer is initiated link re-establishment.
Further, a kind of transmission system of protocol Data Unit, this system comprises: send window maintenance module, data transmission blocks, judge module and reconstruction initiation module, wherein:
Send window maintenance module, for pushing up as the window that sends window using maximum send state variable VT (MS);
Data transmission blocks, for sending the confirmation module data AMD protocol Data Unit PDU that carries poll flag bit;
Judge module, for sending after AMD PDU in data transmission blocks, starts poll retransmission timer, in the situation that this poll retransmission timer is overtime, judges whether the send state variable VT (S) that sends window equals VT (MS);
Rebuild initiation module, while equaling VT (MS) for send the VT (S) of window in judge module judgement, notice radio resource control layer is initiated link re-establishment.
Further, send window maintenance module, also be used to and send the window definition beginning original position variable V T (P) of transmission poll continuously, the value of this VT (P) is VT (MS)-NP, and this NP is the maximum quantity that allows the AMD PDU that carries poll flag bit sending continuously;
When data transmission blocks sends AMD PDU, judge VT (S) whether [VT (P), VT (MS)) in, if so, in AMD PDU, carry poll flag bit, send this and carry the AMD PDU of poll flag bit.
Further, send window maintenance module, also at the bottom of the window as transmission window using acknowledgement state variable V T (A);
Data transmission blocks, also at VT (S) not at [VT (P), VT (MS)) when interior, judge that whether this VT (S) is at [VT (A), VT (P)) in, if, upgrade containing individual counter of the protocol Data Unit of poll and do not contain the byte counter of data field in the protocol Data Unit of poll, whether the count value that judges these two counters is greater than corresponding counting thresholding, in the time that one of them count value of these two counters is greater than corresponding counting thresholding, in AMD PDU, carry poll flag bit, send the AMD PDU that this carries poll flag bit.
Further, the value of NP is that the re-transmission thresholding of AMD PDU adds 1.
Further, data transmission blocks, also for VT (S) not [VT (A), VT (P)) when interior, notice radio resource control layer is initiated link re-establishment.
In sum, the present invention is in the time that poll retransmission timer is overtime, judge whether VT (S) equals VT (MS), if, notify radio resource control layer to initiate link re-establishment, in the situation that not affecting ARQ process, effectively utilize to a greater extent bandwidth, reduce the delay of initiating process of reconstruction, improve in time severe transmission environment, and, can be set to identical with current method in the number of initiating RLC entity before process of reconstruction and send continuously the AMD PDU that comprises poll, do not affect the probability that ARQ obtains STATUS PDU, and the poll that retransmits thresholding number is distributed in new AMD PDU, do not waste any possible bandwidth.
Accompanying drawing explanation
Fig. 1 is the flow chart of the transmission method of the protocol Data Unit of present embodiment;
Fig. 2 is the flow chart that sends retransmission data in the transmission method of protocol Data Unit of present embodiment;
Fig. 3 is the flow chart of poll retransmission timer timeout treatment method in the transmission method of protocol Data Unit of present embodiment;
Fig. 4 is the Organization Chart of the transmission system of the protocol Data Unit of present embodiment.
Embodiment
Transmit in the prior art in the process of AMD PDU, after poll retransmission timer is overtime, if sent when window is limited can not be sent new AMD PDU and carry poll, can retransmit an AMD PDU who does not obtain positive confirmation and carry poll, this does not obtain the positive AMD PDU confirming and may be received by reciprocity RLC entity, again retransmit this AMD PDU, just in order to send a poll to reciprocity RLC entity, if do not receive the STATUS PDU that reciprocity RLC entity is sent always, to repeatedly retransmit so this AMD PDU, this mode has greatly been wasted bandwidth, and reach VT (MS) after a period of time ((maxRetxThreshold+1) * poll retransmission timer duration) from VT (S), could initiate process of reconstruction, therefore existing needs the long period could improve the defect of transmitting procedure.
Present embodiment is carried in transmission after the AMD PDU of poll, in the situation that poll retransmission timer is overtime, judge whether the VT (S) that sends window equals VT (MS), if VT (S) equals VT (MS), AM RLC entity notice RRC initiates link re-establishment process.
And, send in window and define a new state variable VT (P) at AM RLC entity, its value is VT (MS)-NP, and NP is the maximum quantity that allows the AMD PDU that carries poll sending continuously, and preferably value is maxRetxThreshold+1.When VT (S) [VT (P), VT (MS)) in scope time, the SN that AM RLC entity sends is that the AMD PDU of VT (S) will comprise poll.
RLC entity is in the time receiving the STATUS PDU that reciprocity RLC entity is sent, be the front confirmation of the AMD PDU of VT (A) if wherein comprised SN, RLC entity will upgrade VT (A), and VT (MS) and VT (P) also can correspondingly upgrade simultaneously.
Present embodiment is by increasing a RLC and RRC (Radio Resource Control, Radio Resource control) interface message, notice RRC initiates link re-establishment process, and interface message is defined as ZPS_EURLC_EURRC_WINDOWSTALLED (AM RLC sends window and stagnates message).When RLC entity transmitter side is in the time that the AMD PDU that sends continuously the individual poll of containing of NP reaches transmission window window top, if still do not receive STATUS PDU, determine it is that upstream or downstream data transmission procedure has gone out serious problem, need to adopt interface message defined above to notify RRC to initiate process of reconstruction.
Below in conjunction with accompanying drawing, present embodiment is elaborated.
Fig. 1 is the transmission method of the protocol Data Unit of present embodiment, comprising:
Step 101:AM RLC entity transmitter side is using VT (A) (acknowledgement state variable) as at the bottom of sending the window of window, VT (MS) (maximum send state variable) is as the window top that sends window, by VT (MS)-NP assignment to VT (P) (starting to send continuously the original position variable of poll), the value that the initial value of VT (S) (send state variable) and VT (A) is 0, NP is maxRetxThreshold+1;
Step 102: in the time that transmission opportunity arrives, the group bag function of MAC readjustment AM RLC entity, total size of the AMD PDU that notice AM RLC entity can send;
Step 103:AM RLC entity enters AM modal sets packet procedures according to logic channel pattern, has judged whether that STATUS PDU needs to send, if had, performs step 104; If no, perform step 105;
AM RLC entity sends packet priority order from high to low: the data that need transmission in STATUS PDU, retransmission data and transmission buffering area.
Step 104:AM RLC entity is set up STATUS PDU and is sent, and completes after transmission, finishes;
Step 105: judge whether retransmission buffer is empty, whether has retransmission data to need to send, if had, carry out retransmission steps (with reference to 201～203); Otherwise, execution step 106;
Step 106: judge whether be empty, if so, explanation does not need the data that send, and finishes if sending buffering area; Otherwise, illustrate that data need to send, perform step 107;
Step 107: judge VT (S) whether [VT (A), VT (P)) in, if so, perform step 108; Otherwise, execution step 111;
Step 108: upgrade PDU_WITHOUT_POLL (not containing the individual counter of the protocol Data Unit of poll) and two counters of BYTE_WITHOUT_POLL (not containing the byte counter of data field in the protocol Data Unit of poll), execution step 109;
PDU_WITHOUT_POLL counter records does not contain the number of the PDU of poll; BYTE_WITHOUT_POLL record does not contain the byte number of the data field of the PDU of poll.When refresh counter, counter PDU_THOUT_POLL is increased to 1, counter BYTE_WITHOUT_POLL is increased by byte.
Step 109: judge whether one of them count value of two counters is greater than corresponding counting thresholding, if so, comprise a poll in the AMD PDU that will newly set up, execution step 113; If the count value of two counters is all less than corresponding counts thresholding, perform step 110;
Whether the count value that judges counter is greater than while calculating thresholding, whether the count value that judges PDU_WITHOUT_POLL is greater than pollPDU (polling protocol data cell thresholding), and whether the count value of BYTE_WITHOUT_POLL is greater than pollByte (poll byte thresholding).When one of them count value of two counters is greater than corresponding counts thresholding, also these two counters are carried out respectively to zero clearing.
Step 110: judge and send buffer memory and retransmit buffer memory whether be sky, if be sky, perform step 115; Be empty if retransmit buffer memory, it is not empty sending buffer memory, performs step 114;
Step 111: judge VT (S) whether [VT (P), VT (MS)) in scope, if so, perform step 113; Otherwise, execution step 112;
Step 112: notice RRC initiates link re-establishment process, finishes;
Present embodiment not to VT (S) at [VT (A), VT (P)) or at [VT (P), VT (MS)) judgement in scope limits sequencing, also can first judge that whether VT (S) is at [VT (P), VT (MS)) in scope, judge again SN whether [VT (A), VT (P)) in scope.
Step 113: send the AMD PDU (SN is VT (S)) that comprises poll to MAC layer, start poll retransmission timer, and the SN of the AMD PDU that comprises poll that record sends, be designated as POLL_SN, VT (S) is added to 1, by clear 0 to PDU_WITHOUT_POLL and BYTE_WITHOUT_POLL counter, finish;
Step 114: send the AMD PDU (SN is VT (S)) that does not comprise poll to MAC layer, VT (S) is added to 1, finish;
Step 115: the AMD PDU that is VT (S)-1 by SN carries poll, and put into retransmission queue and wait for repeating transmission, finish.
Fig. 2 is to be not sky in retransmission buffer, and the retransmission steps while having retransmission data to send, comprising:
Step 201: when just upgrading the retransmission counter of this AMD PDU after AMD PDU of complete repeating transmission, judge whether sending times exceedes re-transmission thresholding, if exceeded, perform step 202; Otherwise, execution step 203;
Step 202: send and retransmit failed message to RRC, cause RRC and initiate process of reconstruction;
Step 203: according to total size of the AMD PDU sending of MAC notice, AMD PDU or AMD PDU Segment (segmentation) are retransmitted in judgement, and complete the process of transmitting of retransmission data.
Fig. 3 is the overtime treatment step of poll retransmission timer, namely in the timing of poll retransmission timer, does not receive the treatment step in the situation of the STATUS PDU that peer-entities sends, comprising:
Step 301: judge whether VT (S) equals VT (MS), if so, notice RRC initiates link re-establishment process; Otherwise, execution step 302;
In poll retransmission timer timing, if receive the STATUSPDU that reciprocity RRC entity sends, and comprise the positive or negative confirmation that SN is the AMD PDU of POLL_SN, stop poll retransmission timer, finish.
In poll retransmission timer timing, in the time receiving the STATUSPDU that reciprocity RRC entity is sent, if being the AMD PDU of VT (A), SN obtains positive confirmation, upgrading VT (A) is [VT (A), VT (S)) in also do not obtain the positive minimum SN confirming, upgrade VT (MS) is VT (A)+AM_Window_Size (affirmation mode _ window _ size) simultaneously, and upgrading VT (P) is VT (MS)-NP.
VT (S) equals VT (MS) and illustrates that sending AMD PDU and the window that window sends multiple poll of carrying continuously can not slide again.
Step 302: judge and send buffer memory and retransmit buffer memory whether be sky, if be sky, perform step 303; Otherwise execution step 304;
Step 303: the AMD PDU that is VT (S)-1 by SN carries poll, and put into retransmission queue and wait for repeating transmission;
Step 304: will put poll triggering and be masked as very, and carry poll in the PDU of wait transmission next time re-transmission or the PDU newly organizing.
Be sky if send buffer memory and retransmit buffer memory, explanation is carried poll without the AMD PDU that can send, now thinks that the AMD PDU that SN equals VT (S)-1 needs re-transmission, carries poll.
Fig. 4 is the transmission system of the protocol Data Unit of present embodiment, comprising: send window maintenance module, data transmission blocks, data reception module, judge module and reconstruction initiation module, wherein:
Send window maintenance module, for pushing up as the window that sends window using VT (MS), for sending window definition VT (P), the value of this VT (P) is VT (MS)-NP, this NP is the maximum quantity that allows the AMD PDU that carries poll flag bit sending continuously, at the bottom of using VT (A) as the window of transmission window, the value of NP is that the re-transmission thresholding of described AMD PDU adds 1.
Data transmission blocks, for sending the AMD PDU that carries poll flag bit, data transmission blocks is in the time that establishment sequence number is the AMD PDU of VT (S), judge VT (S) whether [VT (P), VT (MS)) in, if, in AMD PDU, carry poll flag bit, send this and carry the AMDPDU of poll flag bit, otherwise judge that whether this VT (S) is at [VT (A), VT (P)) in, if, refresh counter PDU_WITHOUT_POLL and BYTE_WITHOUT_POLL, whether the count value that then judges counter is greater than counting thresholding, in the time that one of them count value of two counters is greater than corresponding counts thresholding, in set up AMD PDU, carry poll flag bit, send the AMDPDU that this carries poll flag bit, at VT (S) not at [VT (A), VT (P)) and [VT (P), VT (MS)) in scope time, notice radio resource control layer is initiated link re-establishment.
Data reception module, the STATUS PDU sending for receiving peer-entities;
Judge module, for sending after window module transmission AMD PDU, start poll retransmission timer, in the situation that this poll retransmission timer is overtime, the STATUS PDU that does not namely receive peer-entities transmission at data reception module in the timing of poll retransmission timer, judge whether the VT (S) that sends window equals VT (MS);
Rebuild initiation module, while equaling VT (MS) for send the VT (S) of window in judge module judgement, notice radio resource control layer is initiated link re-establishment.
One of ordinary skill in the art will appreciate that all or part of step in said method can carry out instruction related hardware by program and complete, program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, the each module in above-described embodiment can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have numerous embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes or variation; in every case any modification of doing within the spirit and principles in the present invention, be equal to replacements, improvement, within protection scope of the present invention all should be included in.
Claims (10)
1. a transmission method for protocol Data Unit, comprising:
Wireless link control rlc layer entity is using maximum send state variable VT (MS) as the window top that sends window, carry in transmission after the acknowledged mode data AMD protocol Data Unit PDU of poll flag bit, start poll retransmission timer, in the situation that this poll retransmission timer is overtime, whether the send state variable VT (S) that judges described transmission window equals described VT (MS), if so, notify radio resource control layer to initiate link re-establishment.
2. the method for claim 1, is characterized in that:
Described rlc layer entity is the original position variable V T (P) that described transmission window definition starts to send continuously poll, the value of this VT (P) is VT (MS)-NP, and this NP is the maximum quantity that allows the AMD PDU that carries described poll flag bit sending continuously;
The step that described transmission carries the AMD PDU of poll flag bit comprises:
Judge described VT (S) whether [VT (P), VT (MS)) in, if so, in described AMD PDU, carry described poll flag bit, send this and carry the AMD PDU of described poll flag bit.
3. method as claimed in claim 2, is characterized in that:
Described rlc layer entity using acknowledgement state variable V T (A) as the window of described transmission window at the bottom of;
The step that described transmission carries the AMD PDU of poll flag bit also comprises:
At described VT (S) not at [VT (P), VT (MS)) when interior, judge that whether this VT (S) is at [VT (A), VT (P)) in, if, upgrade containing individual counter of the protocol Data Unit of poll and do not contain the byte counter of data field in the protocol Data Unit of poll, whether the count value that judges these two counters is greater than corresponding counting thresholding, in the time that one of them count value of these two counters is greater than corresponding counting thresholding, in described AMD PDU, carry described poll flag bit, send the AMD PDU that this carries described poll flag bit.
4. method as claimed in claim 2, is characterized in that: the value of described NP is that the re-transmission thresholding of described AMD PDU adds 1.
5. method as claimed in claim 3, is characterized in that, the method also comprises:
Described VT (S) not [VT (A), VT (P)) when interior, described rlc layer entity notice radio resource control layer is initiated link re-establishment.
6. a transmission system for protocol Data Unit, this system comprises: send window maintenance module, data transmission blocks, judge module and reconstruction initiation module, wherein:
Described transmission window maintenance module, for pushing up as the window that sends window using maximum send state variable VT (MS);
Described data transmission blocks, for sending the confirmation module data AMD protocol Data Unit PDU that carries poll flag bit;
Described judge module, for sending after described AMD PDU in described data transmission blocks, start poll retransmission timer, in the situation that this poll retransmission timer is overtime, judge whether the send state variable VT (S) of described transmission window equals described VT (MS);
Described reconstruction initiation module, when judging that at described judge module the VT (S) of described transmission window equals described VT (MS), notice radio resource control layer is initiated link re-establishment.
7. system as claimed in claim 6, is characterized in that:
Described transmission window maintenance module, also be used to described transmission window definition to start to send continuously the original position variable V T (P) of poll, the value of this VT (P) is VT (MS)-NP, and this NP is the maximum quantity that allows the AMD PDU that carries described poll flag bit sending continuously;
When described data transmission blocks sends described AMD PDU, judge described VT (S) whether [VT (P), VT (MS)) in, if, in described AMD PDU, carry described poll flag bit, send this and carry the AMD PDU of described poll flag bit.
8. system as claimed in claim 7, is characterized in that:
Described transmission window maintenance module, also at the bottom of using acknowledgement state variable V T (A) as the window of described transmission window;
Described data transmission blocks, also at described VT (S) not at [VT (P), VT (MS)) when interior, judge that whether this VT (S) is at [VT (A), VT (P)) in, if, upgrade containing individual counter of the protocol Data Unit of poll and do not contain the byte counter of data field in the protocol Data Unit of poll, whether the count value that judges these two counters is greater than corresponding counting thresholding, in the time that one of them count value of these two counters is greater than corresponding counting thresholding, in described AMD PDU, carry described poll flag bit, send the AMD PDU that this carries described poll flag bit.
9. system as claimed in claim 7, is characterized in that: the value of described NP is that the re-transmission thresholding of described AMD PDU adds 1.
10. system as claimed in claim 8, is characterized in that:
Described data transmission blocks, also for described VT (S) not [VT (A), VT (P)) when interior, notice radio resource control layer is initiated link re-establishment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010282504.9A CN101944984B (en) | 2010-09-14 | 2010-09-14 | Transmission method of protocol data unit and system thereof |
| PCT/CN2011/078185 WO2012034463A1 (en) | 2010-09-14 | 2011-08-10 | Method and system for transmitting protocol data unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010282504.9A CN101944984B (en) | 2010-09-14 | 2010-09-14 | Transmission method of protocol data unit and system thereof |
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| Publication Number | Publication Date |
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| CN101944984A CN101944984A (en) | 2011-01-12 |
| CN101944984B true CN101944984B (en) | 2014-06-11 |
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| CN101944984B (en) * | 2010-09-14 | 2014-06-11 | 中兴通讯股份有限公司 | Transmission method of protocol data unit and system thereof |
| CN104836646B (en) * | 2014-02-12 | 2018-03-23 | 普天信息技术研究院有限公司 | A kind of RLC AM patterns transmission reliability Enhancement Method |
| CN107995653B (en) * | 2016-10-26 | 2021-03-23 | 普天信息技术有限公司 | Resource management method |
| CN109905206A (en) * | 2017-12-07 | 2019-06-18 | 夏普株式会社 | Wireless communications method and equipment |
| EP3669477B1 (en) | 2018-01-07 | 2022-09-14 | LG Electronics Inc. | Communication device, processing device and method for transmitting data unit |
| WO2019178854A1 (en) | 2018-03-23 | 2019-09-26 | Oppo广东移动通信有限公司 | Method and apparatus for retransmission processing |
| CN111526599B (en) * | 2019-02-01 | 2022-05-31 | 华为技术有限公司 | Method and device for sending Radio Resource Control (RRC) message |
| CN111698726B (en) * | 2019-03-13 | 2023-07-25 | 中国移动通信有限公司研究院 | Data transmission method, device, related equipment and storage medium |
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| CN201378833Y (en) * | 2007-12-11 | 2010-01-06 | 交互数字专利控股公司 | Wireless transmitting and receiving unit (WTRU) |
| CN201398240Y (en) * | 2007-12-10 | 2010-02-03 | 交互数字专利控股公司 | Device for triggering control re-establishment of radio link |
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| KR100339342B1 (en) * | 2000-07-01 | 2002-06-03 | 서평원 | Method for confirming receiving of Protocol data |
| CN101944984B (en) * | 2010-09-14 | 2014-06-11 | 中兴通讯股份有限公司 | Transmission method of protocol data unit and system thereof |
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| CN201398240Y (en) * | 2007-12-10 | 2010-02-03 | 交互数字专利控股公司 | Device for triggering control re-establishment of radio link |
| CN201378833Y (en) * | 2007-12-11 | 2010-01-06 | 交互数字专利控股公司 | Wireless transmitting and receiving unit (WTRU) |
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| Evolved Universal Terrestrial Radio Access(E-UTRA) Radio Link Control(RLC) Protocol Specification,3rd;Technical Specification Group Radio Access Network;《3GPP Specification》;20071231;第5.2节 * |
| TechnicalSpecificationGroupRadioAccessNetwork.EvolvedUniversalTerrestrialRadioAccess(E-UTRA)RadioLinkControl(RLC)ProtocolSpecification 3rd.《3GPP Specification》.2007 |
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| WO2012034463A1 (en) | 2012-03-22 |
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