CN101217350B - A detection and reporting method, system and receiving end of PDU - Google Patents
A detection and reporting method, system and receiving end of PDU Download PDFInfo
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- CN101217350B CN101217350B CN2007100632571A CN200710063257A CN101217350B CN 101217350 B CN101217350 B CN 101217350B CN 2007100632571 A CN2007100632571 A CN 2007100632571A CN 200710063257 A CN200710063257 A CN 200710063257A CN 101217350 B CN101217350 B CN 101217350B
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Abstract
The invention discloses a method which is used for checking and reporting a protocol data unit in the control of wireless link. The receiving terminal checks whether a PDU losses packages by applying an HARQ flutter timer. When the PDU losses packages, and a timer with one period is adopted, the report of losing packages state is sent to the sending terminal. The invention also discloses a check and report system and a receiving terminal of the protocol data unit that is lost in the control of wireless link. The invention can start one HARQ flutter timer to a plurality of receiver sequence gaps when loss lists are checked. Or else the invention sends loss state report by a period timer until the loss list is empty. By applying the invention, the cost of the timer in the system can be reduced, meanwhile, times of sending loss state report can be reduced, thus lowering the occupancy factor of wireless resource used by loss state report, and the effective thuoughput of the system is correspondingly improved.
Description
Technical field
The present invention relates to communication technical field, concrete the detection report method, system and the receiving terminal that are particularly related to protocol Data Unit in a kind of Radio Link control.
Background technology
RLC (Radio Link control) layer is positioned on MAC (medium access control) layer, for the user provides segmentation and the business of retransmitting with control data.The RLC entity is divided into three kinds of pattern: TM (transparent mode) according to type of service, UM (Unacknowledged Mode), AM (affirmation mode).Wherein for AM, the RLC entity is two-way, and promptly this entity is divided into receiver side and transmitter side is accomplished the transmission receiving function to data, and they can be communicated with each other each other.In the AM of rlc layer pattern, after receiving terminal detects the PDU (protocol Data Unit) that loses, trigger ARQ (repeat requests automatically) mechanism of transmitting terminal through status report and carry out wrong detection and recovery.
In the version before the R6, the PDU that the MAC layer sends submits in order, so rlc layer can be confirmed losing of PDU through simple detection receiving sequence breach.In existing LTE (3GPP Long Term Evolution project); Because HARQ (mixing automatic repeat requests) transmission delay difference and MAC layer no longer carry out the ordering of receiving sequence; Therefore will there be the situation of out of order reception in the PDU of rlc layer; For the PDU that loses is detected, introduced following solution among the LTE: when receiving terminal detects the breach of a receiving sequence, start HARQ shake timer; Prevent the wrong detection that causes because of the long transmission delay of HARQ, the length of HARQ shake timer is relevant with the maximum transmitting time delay of HARQ.Behind this timer expiry, the PDU of indentation, there is not received termination yet and receives, and thinks that then this PDU loses, and this moment, receiving terminal was organized the packet loss status report, and this report is sent to transmitting terminal, was retransmitted by transmitting terminal; Simultaneously in order to prevent that status report and re-transmission from makeing mistakes; Receiving terminal is when sending status report; The start-up period timer is not still received the correct retransmission packet of losing PDU when this timer receiving terminal after overtime, and then receiving terminal repeats to send the packet loss status report; Be received proper really reception up to this PDU, perhaps receiving terminal or transmitting terminal stop transmission and wait to this PDU by other mechanism.
Have RLC PDU detection now and report exemplary plot as shown in Figure 1, the figure shows the process that independent HARQ shake timer of application and independent cycle timer are lost the PDU detection and reported:
In the moment 1, it is the receiving sequence breach that receiving terminal detects PDU2, and this moment, the HARQ shake timer of PDU2 started as yet, so receiving terminal is at the HARQ shake timer of the moment 1 startup PDU2;
In the moment 2, it is the receiving sequence breach that receiving terminal detects PDU4, and this moment, the HARQ shake timer of PDU4 started as yet, so receiving terminal is at the HARQ shake timer of the moment 2 startup PDU4;
In the moment 3; The HARQ shake timer expiry of PDU2, receiving terminal is confirmed the PDU2 packet loss, this moment, receiving terminal was to the transmitting terminal status report; The request transmitting terminal retransmits this PDU2, and whether the cycle timer of the PDU2 of receiving terminal startup simultaneously successfully retransmits PDU2 to keep watch on transmitting terminal;
In the moment 4, it is the receiving sequence breach that receiving terminal detects PDU6, and this moment, the HARQ shake timer of PDU6 started as yet, so receiving terminal is at the HARQ shake timer of the moment 4 startup PDU6;
In the moment 5; The HARQ shake timer expiry of PDU4, receiving terminal is confirmed the PDU4 packet loss, this moment, receiving terminal was to the transmitting terminal status report; The request transmitting terminal retransmits this PDU4, and whether the cycle timer of the PDU4 of receiving terminal startup simultaneously successfully retransmits PDU4 to keep watch on transmitting terminal;
In the moment 6; The HARQ shake timer expiry of PDU6, receiving terminal is confirmed the PDU6 packet loss, this moment, receiving terminal was to the transmitting terminal status report; The request transmitting terminal retransmits this PDU6, and whether the cycle timer of the PDU6 of receiving terminal startup simultaneously successfully retransmits PDU6 to keep watch on transmitting terminal;
In the moment 7, receiving terminal successfully receives the PDU4 that transmitting terminal retransmits, and this moment, receiving terminal stopped the cycle timer of PDU4;
In the moment 8, the cycle timer of the PDU2 of receiving terminal request retransmission is overtime, and receiving terminal is once more to the transmitting terminal status report at this moment, and the request transmitting terminal retransmits this PDU2;
In the moment 9, receiving terminal successfully receives the PDU6 that transmitting terminal retransmits, and this moment, receiving terminal stopped the cycle timer of PDU6;
Constantly 10, receiving terminal successfully receives the PDU2 that transmitting terminal retransmits, and this moment, receiving terminal stopped the cycle timer of PDU2, in the system to the detection of PDU packet loss, report with Recovery Process and finish.
Can know by above example; When system detects three sequence gap PDU2 that occur continuously; When PDU4 and PDU6, just need be for these three breach are provided with three HARQ shake timers and three cycle timers respectively, in order to respectively these three sequence gaps detected and to report.And when the receiving sequence breach quantity that detects continuous appearance in the system is far longer than three; Receiving terminal starts HARQ shake timer one by one to these breach; And the packet loss after overtime sent the status report of request retransmission respectively, so receiving terminal need be safeguarded corresponding a plurality of cycle timer simultaneously to these receiving sequence breach that occur continuously.So existing method will be safeguarded a plurality of HARQ shake timers and cycle timer simultaneously; Will make intrasystem expense and increase because safeguard a plurality of timers; Owing to will repeatedly send the status report of request retransmission, cause the also corresponding increase of occupancy of resource in the system simultaneously.
Summary of the invention
In view of this; The object of the present invention is to provide the detection report method of the protocol Data Unit of losing in a kind of Radio Link control; Need to safeguard a plurality of HARQ shake timers and cycle timer in the process to solve in the prior art detecting to report; Cause the expense of system to increase the problem that resources occupation rate improves.
Another object of the present invention is to provide the detection reporting system of the protocol Data Unit of losing in a kind of Radio Link control, need in the process to safeguard a plurality of cycle timers to solve to have now to detect to report, and the problem that causes the system resource occupancy to increase.
Another purpose of the present invention is to provide the detection of the protocol Data Unit of losing in the Radio Link control to report receiving terminal, need safeguard the problem of a plurality of cycle timers with receiving terminal in the solution prior art.
For solving the problems of the technologies described above, the present invention provides following technical scheme:
A kind of detection report method of protocol Data Unit is characterized in that, receiving terminal is used HARQ shake timer and detected whether packet loss of PDU, when said PDU packet loss, adopts the timing of one-period timer, and sends the packet loss status report to transmitting terminal; Wherein,
When said receiving terminal primary detection arrives the PDU packet loss; Send packet loss status report request transmitting terminal and retransmit this PDU; Start said one-period timer simultaneously, during said one-period timer expiry, receiving terminal sends the PDU packet loss that unified packet loss status report request transmitting terminal retransmits new detected PDU packet loss in the packet loss tabulation and/or retransmits failure; Restart this cycle timer simultaneously, repeat this step and before said one-period timer expiry, receive all PDU packet losses until receiving terminal.Said receiving terminal detects whether packet loss of PDU through following steps:
Receiving terminal detects in the PDU sequence of reception when jagged, uses a HARQ shake timer to each breach PDU timing; Receiving terminal is confirmed said PDU packet loss when said HARQ shakes timer expiry; Or
Receiving terminal detects in the PDU sequence of reception when jagged, uses HARQ shake timer respectively to each breach PDU timing; Receiving terminal is confirmed said PDU packet loss when said HARQ shakes timer expiry.
HARQ shake timer expiry then adds said PDU packet loss in the packet loss tabulation in said one-period timer timing course.
A kind of detection reporting system of protocol Data Unit comprises the transmitting terminal and the receiving terminal of wireless link control protocol data cell it is characterized in that said receiving terminal comprises:
Detect the PDU unit, be used to use HARQ shake timer the PDU packet loss is detected;
The timing of one-period timer is used in request retransmission PDU unit when being used to detect the PDU packet loss, and sends the status report of request retransmission PDU packet loss to transmitting terminal; Wherein,
Described request retransmits the PDU unit and comprises:
The status report unit when being used for receiving terminal and detecting the PDU packet loss, sends the PDU packet loss in the tabulation of packet loss status report request retransmission packet loss to transmitting terminal;
Whether the cycle timer timing unit is used for when request retransmission PDU unit sends the packet loss status report, starting the one-period timer and confirms to retransmit successful.Said detection PDU unit comprises:
HARQ shake timer timing unit is used for receiving terminal and detects the PDU sequence of reception when jagged, starts HARQ shake timer breach PDU is carried out timing;
Add list cell, be used for when said HARQ shakes timer expiry, said detected PDU packet loss is added in the packet loss tabulation.
A kind of detection of protocol Data Unit reports receiving terminal, comprising:
Detect the PDU unit, be used to use a HARQ shake timer PDU packet loss is detected;
The timing of one-period timer is used in request retransmission PDU unit when being used to detect the PDU packet loss, and sends the status report of request retransmission PDU packet loss to transmitting terminal; Wherein,
Described request retransmits the PDU unit and comprises:
The status report unit when being used for receiving terminal and detecting the PDU packet loss, sends the PDU packet loss in the tabulation of packet loss status report request retransmission packet loss to transmitting terminal;
Whether the cycle timer timing unit is used for when request retransmission PDU unit sends the packet loss status report, starting the one-period timer and confirms to retransmit successful.
Said detection PDU unit comprises:
Same HARQ shake timer timing unit is used for detecting the PDU sequence of reception when jagged, starts a HARQ and shakes timer each breach PDU is carried out timing;
Add list cell, be used for when a said HARQ shakes timer expiry, said detected PDU packet loss being added in the packet loss tabulation.
A kind of detection of protocol Data Unit reports receiving terminal, comprising:
Detect the PDU unit, be used for using respectively HARQ shake timer each PDU packet loss is detected;
The timing of one-period timer is used in request retransmission PDU unit when being used to detect the PDU packet loss, and sends the status report of request retransmission PDU packet loss to transmitting terminal; Wherein,
Described request retransmits the PDU unit and comprises:
The status report unit when being used to detect the PDU packet loss, sends the PDU packet loss in the tabulation of packet loss status report request retransmission packet loss to transmitting terminal;
Whether the cycle timer timing unit is used for when request retransmission PDU unit sends the packet loss status report, starting the one-period timer and confirms to retransmit successful.Said detection PDU unit comprises:
HARQ shake timer timing unit is used for detecting the PDU sequence of reception when jagged, starts HARQ shake timer respectively each breach PDU is carried out timing;
Add list cell, be used for when said HARQ shakes timer expiry, said detected PDU packet loss is added in the packet loss tabulation.
The present invention only safeguards a HARQ shake timer when receiving terminal detects the receiving sequence breach, when detecting the receiving sequence breach, under the situation that HARQ shake timer is not activated, then normally start this timer; And under the situation that HARQ shake timer has started, after then treating this timer expiry or stopping, again all new breach are started this HARQ shake timer and carry out the PDU packet loss detection; The present invention sends PDU packet loss status report through the one-period timer after receiving terminal detects the PDU packet loss; When new PDU packet loss adds the packet loss tabulation because of corresponding HARQ shake timer expiry; Under the situation that cycle timer is not activated; Then status report is to this packet loss of transmitting terminal request retransmission PDU while start-up period timer; Under the situation that cycle timer has started, after treating that cycle timer is overtime or stopping, resending PDU in the tabulation of packet loss status report request packet loss again and retransmit and restart this cycle timer.
Can know that by above analysis the present invention can start a HARQ shake timer to a plurality of receiving sequence breach when detecting the packet loss tabulation; Perhaps detected packet loss is sent the packet loss status report through the one-period timer, empty up to the packet loss tabulation.This mode helps the expense of timer in the minimizing system, has also reduced the number of times of receiving terminal transmission packet loss status report simultaneously, has reduced the occupancy of packet loss status report to Radio Resource, the corresponding effective throughput that improves system.
Description of drawings
Fig. 1 reports exemplary plot for existing PDU detects;
Fig. 2 detects the first embodiment flow chart of report method for PDU of the present invention;
Fig. 3 detects the second embodiment flow chart of report method for PDU of the present invention;
Fig. 4 reports exemplary plot for the detection of PDU in the second embodiment of the invention;
Fig. 5 detects the 3rd embodiment flow chart of report method for PDU of the present invention;
Fig. 6 reports exemplary plot for the detection of PDU in the third embodiment of the invention;
Fig. 7 detects the embodiment block diagram of reporting system for PDU of the present invention;
Fig. 8 detects the embodiment block diagram that reports receiving terminal for first kind of PDU of the present invention;
Fig. 9 detects the embodiment block diagram that reports receiving terminal for second kind of PDU of the present invention.
Embodiment
Core of the present invention provides the detection report method of a kind of RLC PDU; This method is mainly used under the RLC AM pattern; The RLC entity is two-way under the AM pattern; Though promptly have only an entity, this entity is divided into transmitting terminal and brings in the transmission receiving function of accomplishing data with receiving, and transmitting terminal and receiving terminal can intercommunications.The receiving terminal of RLC AM entity receives RLC PDU and out of Memory through logic channel from transmitting terminal; Because the RLC entity has the ARQ function; When the RLC receiving terminal receives wrong RLC PDU or PDU packet loss, will notify transmitting terminal to retransmit this RLC PDU wrong or packet loss.Owing to comprise serial number information among the RLC PDU, therefore can support order or out of order submit of data again according to serial number information to high level.
When the present invention detects the receiving sequence breach at the receiving terminal of RLC AM pattern; Can only safeguard a HARQ shake timer; Under the situation that HARQ shake timer is not activated, then normally start this timer, and under the situation that HARQ shake timer has started; After treating that then this timer expiry perhaps stops, again all new breach are started this HARQ shake timer and carry out packet loss detection; Satisfying trigger condition at the receiving terminal of RLC AM pattern carries out giving the correct time on the PDU packet loss; Report through the one-period timer, when the packet loss tabulation is not sky, send the packet loss status report to transmitting terminal according to being provided with periodically of this cycle timer; The request transmitting terminal retransmits corresponding PDU packet loss; To retransmitting the then removal from the packet loss tabulation of PDU packet loss that success or other reasons are abandoned transmitting, when the packet loss tabulation is sky, stop the cycle timer of receiving terminal.
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
The flow process of first embodiment of the invention is as shown in Figure 2:
Step 201: receiving terminal detects the PDU packet loss that receives in the PDU sequence.
RLC AM receiving terminal detects in the PDU sequence of reception when jagged, can use a HARQ shake timer to each breach PDU timing, when this HARQ shake timer expiry, confirms this breach PDU packet loss;
Receiving terminal detects in the PDU sequence of reception when jagged, can start HARQ shake timer respectively to each breach PDU and carry out timing, when HARQ shake timer expiry, confirms to shake the corresponding breach PDU packet loss of timer with this HARQ;
Wherein, The length of HARQ shake timer is not less than the maximum transmitting time delay of HARQ; But situation or HARQ at asynchronous HARQ have under the configuration of error detection restore funcitons; The maximum transmitting time delay of HARQ can't be estimated, and then takes all factors into consideration the length of the HARQ shake timer that requirement and the status report of professional QoS time delay, bit error rate and influence that re-transmission takies system resource confirm.
Step 202: receiving terminal adopts the timing of one-period timer, and sends packet loss status report request retransmission PDU to transmitting terminal.
When the receiving terminal primary detection arrives the PDU packet loss, send packet loss status report request transmitting terminal and retransmit this PDU, start the timing of one-period timer simultaneously; When this cycle timer was overtime, the PDU packet loss of new detected PDU packet loss and/or re-transmission failure restarted this cycle timer simultaneously in the tabulation of the unified packet loss status report of receiving terminal transmission request retransmission packet loss.
Wherein, The timing length of this cycle timer is not less than the maximum transmitting time delay sum of HARQ on the twocouese; But when the maximum transmitting time delay of HARQ can't be estimated, then need take all factors into consideration the length that this cycle timer is confirmed in requirement and the status report of professional QoS time delay, bit error rate and influence that re-transmission takies system resource.
Step 203: receiving terminal judges whether this cycle timer successfully receives the PDU of all re-transmissions before overtime, if, process ends then; Otherwise, return step 202.
The second embodiment of the invention flow process is as shown in Figure 3; This embodiment shows under RLC AM pattern; Receiving terminal receives RLC PDU that transmitting terminal sends when jagged, packet loss PDU is detected the process that reports through a HARQ shake timer and one-period timer:
Step 301: during RLC PDU that the receiving terminal receiving end/sending end sends, detect a PDU as the receiving sequence breach.
Step 302: receiving terminal starts a HARQ shake timer detected packet loss PDU is carried out timing.
Step 303: receiving terminal judges whether this HARQ shake timer is overtime, if then execution in step 304; Otherwise, return step 303.
Step 304: receiving terminal sends the status report of request retransmission PDU and starts the one-period timer to transmitting terminal.
Step 305: receiving terminal judges whether this cycle timer is overtime, if then execution in step 310; Otherwise, execution in step 306.
Step 306: receiving terminal judges whether newly to detect the PDU as the receiving sequence breach, if then execution in step 307; Otherwise, return step 305.
Step 307: receiving terminal restarts this HARQ shake timer.
Step 308: receiving terminal judges whether the HARQ shake timer after restarting is overtime, if then execution in step 309; Otherwise, return step 305.
Step 309: receiving terminal adds new detected packet loss PDU in the packet loss tabulation.
Step 310: receiving terminal judges whether that success receives the packet loss PDU of request retransmission, if, process ends then; Otherwise, return step 304.
Based on second embodiment shown in Figure 3, the exemplary plot of the detection report method of the RLC PDU that HARQ shake timer of application and one-period timer are lost among the present invention is as shown in Figure 4:
In the moment 1, receiving terminal detects the breach that PDU2 is a receiving sequence, and this moment, the HARQ shake timer of receiving terminal started as yet, so receiving terminal is at the timer of a HARQ shake of 1 startup constantly;
In the moment 2, this HARQ shake timer expiry, receiving terminal affirmation PDU2 packet loss, receiving terminal is asked this PDU2 of transmitting terminal re-transmission to the transmitting terminal status report at this moment, and whether the one-period of receiving terminal startup simultaneously timer successfully retransmits PDU2 with the supervision transmitting terminal; This moment, receiving terminal detected new sequence gap PDU4 and PDU6 again, and receiving terminal restarts this HARQ shake timer, and PDU4 and PDU6 are detected;
In the moment 3; This HARQ shake timer is overtime once more, confirms PDU4 and PDU6 packet loss, and they are charged in the packet loss tabulation; Therefore this moment, the one-period timer of receiving terminal did not also have overtimely, delayed the re-transmission to receiving terminal status report request PDU 4 and PDU6;
In the moment 4, the one-period timer expiry of receiving terminal, have PDU2 in the packet loss tabulation this moment; PDU4 and PDU6, receiving terminal status report, the request transmitting terminal PDU2 that retransfers; PDU4 and PDU6; Restart this cycle timer once more, whether successfully retransmit PDU2, PDU4 and PDU6 to keep watch on transmitting terminal;
Constantly 5, receiving terminal successfully receives the PDU2 that transmitting terminal retransmits, PDU4 and PDU6, this moment, receiving terminal stopped this cycle timer, in the system to the detection of PDU packet loss, report with recovery process and finish.
The flow process of third embodiment of the invention is as shown in Figure 5; This embodiment shows under the RLCAM pattern; Receiving terminal receives RLC PDU that transmitting terminal sends when jagged, uses HARQ shake timer respectively each packet loss PDU is detected and use the process that the one-period timer reports packet loss PDU:
Step 501: during RLC PDU that the receiving terminal receiving end/sending end sends, detect a PDU as the receiving sequence breach.
Step 502: receiving terminal starts the HARQ shake timer of this packet loss PDU.
Step 503: receiving terminal judges whether the HARQ shake timer of this packet loss PDU is overtime, if then execution in step 508; Otherwise, execution in step 504.
Step 504: receiving terminal judges whether to detect the new packet loss PDU as the receiving sequence breach, if then execution in step 505; Otherwise, return step 504.
Step 505: receiving terminal starts HARQ shake timer respectively new detected packet loss PDU is carried out timing.
Step 506: receiving terminal judges whether the HARQ shake timer of new detected packet loss PDU is overtime, if then execution in step 507; Otherwise, return step 506.
Step 507: will add in the packet loss tabulation with the corresponding PDU of this overtime HARQ shake timer, execution in step 509 then.
Step 508: receiving terminal sends the status report of this packet loss of request retransmission PDU and starts the one-period timer.
Step 509: receiving terminal judges whether this cycle timer is overtime, if then execution in step 510; Otherwise, return step 504.
Step 510: receiving terminal judges whether that success receives the packet loss PDU of request retransmission, if, process ends then; Otherwise, return step 508.
Based on the 3rd embodiment shown in Figure 5, the exemplary plot that the PDU that RLC PDU detects and application one-period timer is lost that the independent HARQ shake of application timer is lost among the present invention reports is as shown in Figure 6:
In the moment 1, receiving terminal detects the breach that PDU2 is a receiving sequence, and HARQ shake this moment timer starts as yet, so receiving terminal is at the HARQ shake timer of the moment 1 startup PDU2;
In the moment 2, receiving terminal detects the breach that PDU4 is a receiving sequence, so receiving terminal starts the HARQ shake timer of PDU4 in the moment 2;
In the moment 3; The HARQ shake timer expiry of PDU2, receiving terminal is confirmed the PDU2 packet loss, this moment, receiving terminal was to the transmitting terminal status report; The request transmitting terminal retransmits this PDU2, and whether the one-period of receiving terminal startup simultaneously timer successfully retransmits PDU2 to keep watch on transmitting terminal;
In the moment 4, receiving terminal detects the breach that PDU6 is a receiving sequence, so receiving terminal starts the HARQ shake timer of PDU6 in the moment 4;
Constantly 5, the HARQ shake timer expiry of PDU4, receiving terminal is confirmed the PDU4 packet loss and since this moment receiving terminal cycle timer start, then receiving terminal is charged to PDU4 in the packet loss tabulation, waits for that this cycle timer is overtime or stops;
Constantly 6, the HARQ shake timer expiry of PDU6, receiving terminal is confirmed the PDU6 packet loss and since this moment receiving terminal cycle timer start, then receiving terminal is charged to PDU6 in the packet loss tabulation, waits for that this cycle timer is overtime or stops;
In the moment 7, the cycle timer of receiving terminal is overtime, and have PDU2 in the packet loss tabulation this moment; PDU4 and PDU6, receiving terminal status report, the request transmitting terminal PDU2 that retransfers; PDU4 and PDU6; Restart this cycle timer once more, whether successfully retransmit PDU2, PDU4 and PDU6 to keep watch on transmitting terminal;
Constantly 8, receiving terminal successfully receives the PDU2 that transmitting terminal retransmits, PDU4 and PDU6, this moment, receiving terminal stopped this cycle timer, in the system to the detection of PDU packet loss, report with Recovery Process and finish.
The embodiment block diagram of RLC PDU detection reporting system of the present invention is as shown in Figure 7:
This system applies is under RLC AM pattern; The transmitting terminal 710 and receiving terminal 720 that comprise the interworking protocol data cell; Transmitting terminal 710 is used for sending RLC PDU through logic channel; Receiving terminal 720 is used to receive RLC PDU and uses HARQ shake timer and detect whether packet loss of PDU, when the PDU packet loss, adopts the timing of one-period timer, and sends the packet loss status report to transmitting terminal.
Transmitting terminal 720 comprises detection PDU unit 721, is used to use HARQ shake timer the PDU packet loss is detected; And request retransmission PDU unit 724, use the timing of one-period timer when being used to detect the PDU packet loss, and send the status report of request retransmission PDU packet loss to transmitting terminal.
Wherein, detect PDU unit 721 and comprise HARQ shake timer timing unit 722, be used for receiving terminal and detect the PDU sequence of reception when jagged, start HARQ shake timer breach PDU is carried out timing; And add list cell 723, be used for when HARQ shake timer expiry, detected PDU packet loss being added in the packet loss tabulation.
Wherein, request retransmission PDU unit 724 comprises status report unit 725, when being used for receiving terminal and detecting the PDU packet loss, sends the PDU packet loss in the tabulation of packet loss status report request retransmission packet loss to transmitting terminal; And cycle timer timing unit 726, be used for when request retransmission PDU unit sends the packet loss status report, starting the one-period timer and whether successfully confirm to retransmit.
First kind of RLC PDU of the present invention detects and reports the embodiment block diagram of receiving terminal as shown in Figure 8:
This RLC PDU receiving terminal comprises: detect PDU unit 810, be used to use a HARQ shake timer PDU packet loss is detected; The timing of one-period timer is used in request retransmission PDU unit 820 when being used to detect the PDU packet loss, and sends the status report of request retransmission PDU packet loss to transmitting terminal.
Wherein, detect PDU unit 810 and comprise same HARQ shake timer timing unit 811, be used for detecting the PDU sequence of reception when jagged, starts a HARQ and shake timer each breach PDU timing; Add list cell 812, be used for when same HARQ shakes timer expiry, detected PDU packet loss is added in the packet loss tabulation.
Wherein, request retransmission PDU unit 820 comprises status report unit 821, when being used to detect the PDU packet loss, sends the PDU packet loss in the tabulation of packet loss status report request retransmission packet loss to transmitting terminal; And cycle timer timing unit 822, be used for when request retransmission PDU unit sends the packet loss status report, starting the one-period timer and whether successfully confirm to retransmit.
Second kind of RLC PDU of the present invention detects and reports the embodiment block diagram of receiving terminal as shown in Figure 9:
This RLC PDU receiving terminal comprises: detect PDU unit 910, be used for using respectively HARQ shake timer each PDU packet loss is detected; The timing of one-period timer is used in request retransmission PDU unit 920 when being used to detect the PDU packet loss, and sends the status report of request retransmission PDU packet loss to transmitting terminal.
Wherein, detect the PDU unit and comprise HARQ shake timer timing unit 911, be used for detecting the PDU sequence of reception when jagged, start HARQ shake timer respectively each breach PDU timing; And add list cell 912, be used for when HARQ shake timer expiry, detected PDU packet loss being added in the packet loss tabulation.
Wherein, request retransmission PDU unit 920 comprises: status report unit 921, when being used to detect the PDU packet loss, send the PDU packet loss in the tabulation of packet loss status report request retransmission packet loss to transmitting terminal; Whether cycle timer timing unit 922 is used for when request retransmission PDU unit sends the packet loss status report, starting the one-period timer and confirms to retransmit successful.
Though described the present invention through 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, hope that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (9)
1. the detection report method of a protocol Data Unit; It is characterized in that; Receiving terminal is used whether packet loss of HARQ shake timer detection protocol data cell PDU, when said PDU packet loss, adopts the timing of one-period timer, and sends the packet loss status report to transmitting terminal; Wherein,
When said receiving terminal primary detection arrives the PDU packet loss; Send packet loss status report request transmitting terminal and retransmit this PDU; Start said one-period timer simultaneously; And execution following steps: during said one-period timer expiry, receiving terminal sends the PDU packet loss that unified packet loss status report request transmitting terminal retransmits new detected PDU packet loss in the packet loss tabulation and/or retransmits failure, restarts this cycle timer simultaneously; Repeat this step and before said one-period timer expiry, receive all PDU packet losses until receiving terminal.
2. method according to claim 1 is characterized in that, said receiving terminal detects whether packet loss of PDU through following steps:
Receiving terminal detects in the PDU sequence of reception when jagged, uses a HARQ shake timer to each breach PDU timing; Receiving terminal is confirmed said PDU packet loss when said HARQ shakes timer expiry; Or
Receiving terminal detects in the PDU sequence of reception when jagged, uses HARQ shake timer respectively to each breach PDU timing; Receiving terminal is confirmed said PDU packet loss when said HARQ shakes timer expiry.
3. method according to claim 1 is characterized in that,
HARQ shake timer expiry then adds said PDU packet loss in the packet loss tabulation in said one-period timer timing course.
4. the detection reporting system of a protocol Data Unit PDU comprises the transmitting terminal and the receiving terminal of wireless link control protocol data cell it is characterized in that said receiving terminal comprises:
Detect the PDU unit, be used to use HARQ shake timer the PDU packet loss is detected;
The timing of one-period timer is used in request retransmission PDU unit when being used to detect the PDU packet loss, and sends the status report of request retransmission PDU packet loss to transmitting terminal;
Described request retransmits the PDU unit and comprises:
The status report unit when being used for receiving terminal and detecting the PDU packet loss, sends the PDU packet loss in the tabulation of packet loss status report request retransmission packet loss to transmitting terminal;
Whether the cycle timer timing unit is used for when the status report unit sends the packet loss status report, starting the one-period timer and confirms to retransmit successful;
Wherein, When said receiving terminal primary detection arrives the PDU packet loss; Send packet loss status report request transmitting terminal and retransmit this PDU, start said one-period timer simultaneously, and carry out following steps: during said one-period timer expiry; The PDU packet loss that new detected PDU packet loss and/or re-transmission are failed in the tabulation of the unified packet loss status report of receiving terminal transmission request transmitting terminal re-transmission packet loss restarts this cycle timer simultaneously; Repeat this step and before said one-period timer expiry, receive all PDU packet losses until receiving terminal.
5. system according to claim 4 is characterized in that, said detection PDU unit comprises:
HARQ shake timer timing unit is used for receiving terminal and detects the PDU sequence of reception when jagged, starts HARQ shake timer breach PDU is carried out timing;
Add list cell, be used for when said HARQ shakes timer expiry, said detected PDU packet loss is added in the packet loss tabulation.
6. the detection of a protocol Data Unit PDU reports receiving terminal, it is characterized in that, comprising:
Detect the PDU unit, be used to use a HARQ shake timer PDU packet loss is detected;
The timing of one-period timer is used in request retransmission PDU unit when being used to detect the PDU packet loss, and sends the status report of request retransmission PDU packet loss to transmitting terminal;
Described request retransmits the PDU unit and comprises:
The status report unit when being used to detect the PDU packet loss, sends the PDU packet loss in the tabulation of packet loss status report request retransmission packet loss to transmitting terminal;
Whether the cycle timer timing unit is used for when the status report unit sends the packet loss status report, starting the one-period timer and confirms to retransmit successful;
Wherein, When said receiving terminal primary detection arrives the PDU packet loss; Send packet loss status report request transmitting terminal and retransmit this PDU, start said one-period timer simultaneously, and carry out following steps: during said one-period timer expiry; The PDU packet loss that new detected PDU packet loss and/or re-transmission are failed in the tabulation of the unified packet loss status report of receiving terminal transmission request transmitting terminal re-transmission packet loss restarts this cycle timer simultaneously; Repeat this step and before said one-period timer expiry, receive all PDU packet losses until receiving terminal.
7. receiving terminal according to claim 6 is characterized in that, said detection PDU unit comprises:
Same HARQ shake timer timing unit is used for detecting the PDU sequence of reception when jagged, starts a HARQ and shakes timer each breach PDU is carried out timing;
Add list cell, be used for when a said HARQ shakes timer expiry, said detected PDU packet loss being added in the packet loss tabulation.
8. the detection of a protocol Data Unit PDU reports receiving terminal, it is characterized in that, comprising:
Detect the PDU unit, be used for using respectively HARQ shake timer each PDU packet loss is detected;
The timing of one-period timer is used in request retransmission PDU unit when being used to detect the PDU packet loss, and sends the status report of request retransmission PDU packet loss to transmitting terminal;
Described request retransmits the PDU unit and comprises:
The status report unit when being used to detect the PDU packet loss, sends the PDU packet loss in the tabulation of packet loss status report request retransmission packet loss to transmitting terminal;
Whether the cycle timer timing unit is used for when the status report unit sends the packet loss status report, starting the one-period timer and confirms to retransmit successful;
Wherein, When said receiving terminal primary detection arrives the PDU packet loss; Send packet loss status report request transmitting terminal and retransmit this PDU, start said one-period timer simultaneously, and carry out following steps: during said one-period timer expiry; The PDU packet loss that new detected PDU packet loss and/or re-transmission are failed in the tabulation of the unified packet loss status report of receiving terminal transmission request transmitting terminal re-transmission packet loss restarts this cycle timer simultaneously; Repeat this step and before said one-period timer expiry, receive all PDU packet losses until receiving terminal.
9. receiving terminal according to claim 8 is characterized in that, said detection PDU unit comprises:
HARQ shake timer timing unit is used for detecting the PDU sequence of reception when jagged, starts HARQ shake timer respectively each breach PDU is carried out timing;
Add list cell, be used for when said HARQ shakes timer expiry, said detected PDU packet loss is added in the packet loss tabulation.
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| CN2007100632571A CN101217350B (en) | 2007-01-05 | 2007-01-05 | A detection and reporting method, system and receiving end of PDU |
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| CN101771518B (en) * | 2008-12-29 | 2013-06-12 | 电信科学技术研究院 | Method, device and system for sending status report |
| US8638773B2 (en) * | 2009-01-29 | 2014-01-28 | Qualcomm Incorporated | RLC for multi-carrier LTE systems |
| CN101902314B (en) * | 2009-06-01 | 2013-11-20 | 鼎桥通信技术有限公司 | Method for transmitting data |
| CN101714915B (en) * | 2009-11-02 | 2013-03-27 | 清华大学 | Data retransmission method and system |
| CN101741863A (en) * | 2010-01-12 | 2010-06-16 | 中兴通讯股份有限公司 | Realization method and device of rearrangement release timer in high speed downlink packet access |
| US9838089B2 (en) | 2011-10-07 | 2017-12-05 | Futurewei Technologies, Inc. | System and method for multiple point transmission in a communications system |
| US20130088960A1 (en) * | 2011-10-07 | 2013-04-11 | Futurewei Technologies, Inc. | System and Method for Information Delivery with Multiple Point Transmission |
| CN103763073B (en) * | 2014-01-09 | 2018-08-07 | 深圳市迪威迅股份有限公司 | A kind of method and terminal that packet loss retransmits |
| CN108668320B (en) * | 2017-03-31 | 2020-11-03 | 维沃移动通信有限公司 | Segment packing method and receiving end |
| CN110351029B (en) | 2019-07-16 | 2021-11-02 | 中磊电子（苏州）有限公司 | Base station and automatic retransmission scheduling method thereof |
| CN112968817B (en) * | 2021-03-25 | 2022-12-06 | 深圳金三立视频科技股份有限公司 | Packet loss data statistical method and terminal in digital information transmission |
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