CN101841856A - Transmitting method and receiving terminal for state report of protocol data unit receiving situation - Google Patents
Transmitting method and receiving terminal for state report of protocol data unit receiving situation Download PDFInfo
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- CN101841856A CN101841856A CN 201010145009 CN201010145009A CN101841856A CN 101841856 A CN101841856 A CN 101841856A CN 201010145009 CN201010145009 CN 201010145009 CN 201010145009 A CN201010145009 A CN 201010145009A CN 101841856 A CN101841856 A CN 101841856A
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Abstract
The invention discloses a transmitting method and a receiving terminal for the state report of protocol data unit receiving situation, belonging to the communication field. In the invention, a timer (self-adaptive timer) is self-determined, and after a protocol data unit (PDU) is received, if the time is in a state of not running, the timer is started. The receiving terminal packs the received PDUs, if all PDUs are successfully packed, the timer is terminated, and otherwise, whether package leakage exists or not is detected, if not, the timer is re-started. When the timer times out, the state report of the PDU receiving situation is transmitted. Thereby, a transmitting terminal can rapidly re-transmit the PDUs which are not correctly received by the receiving terminal.
Description
Technical field
The present invention relates to the communications field, particularly the status report transmission technology of PDU reception condition in the communications field.
Background technology
So-called protocol Data Unit (Protocol Data Unit is called for short " PDU ") is exactly between each layer peer-entities of different websites, is the information unit of realizing that this layer protocol exchanges.After transmitting terminal sends PDU, need know whether receiving terminal correctly receives, and re-transmission is not received the proper PDU that really receives.
At present, Radio Link control (Radio Link Control, be called for short " RLC ") mainly by polling (poll) mechanism under the affirmation mode (Acknowledged Mode is called for short " AM "), realize that peer layer retransmits those not by the PDU that correctly receives or those are not received.Can participate in the United States Patent (USP) of the patent No. about the technology of poll for " 6654957 ".
The Timer_Poll timer that mainly contain transmit leg and the Timer_Poll_Periodic timer relevant in the polling of RLC mechanism, and recipient's Timer_Status_Periodic timer with timer.
Wherein, the Timer_Poll timer represents that transmit leg initiatively retransmits the PDU (Protocol Data Unit) of the band P position (poll bit) that does not obtain recipient's response later at the duration of appointment;
The Timer_Poll_Periodic timer represents that transmit leg every specifying duration in the PDU that is sent (Protocol Data Unit) mid-P position, is used to notify the recipient to send the status report of PDU reception condition;
The Timer_Status_Periodic timer represents that the recipient is every specifying duration to transmit leg active status report.
Yet, the present inventor finds, in concrete the application, RLC is in order to maximally utilise the upstream and downstream bandwidth secured transmission of payload data, generally do not dispose periodic status report (the Timer_Status_Periodic timer promptly is not set) for polling mechanism, the re-transmission duration (being the Timer_Poll length of timer) that configuration simultaneously is long.And when RLC recipient did not know that transmit leg has sent the PDU that has the P position, it can not make any accepting state explanation to this data PDU, and promptly the recipient can not send the status report of PDU reception condition to transmit leg.And transmit leg can't retransmit this PDU under the recipient is to the status report situation of this PDU fast not receiving, at this moment transmit leg and recipient will be in a stalemate of waiting for the other side's information mutually, be not received the upright PDU that really receives thereby caused transmit leg can not retransmit fast, influenced the transmission of data.And, send with the recipient and also all will safeguard present comparatively complicated polling mechanism.
Summary of the invention
The object of the present invention is to provide a kind of status report sending method and receiving terminal of protocol Data Unit reception condition, avoid transmit leg and recipient to be in the stalemate waiting for the other side's information mutually and do not send the PDU receiving state report, be not received the proper PDU that really receives thereby can make transmitting terminal to retransmit fast.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of status report sending method of protocol Data Unit reception condition, comprise following steps:
Receiving terminal is after whenever receiving a protocol Data Unit PDU, if be not activated self-defining self adaptation timer then start the self adaptation timer;
Receiving terminal packages to the PDU that receives;
If all PDU successfully organize bag, then stop the self adaptation timer; If also there is the PDU that does not successfully organize bag, then detect whether there is bottom pour ladle, if there is no bottom pour ladle is then restarted the self adaptation timer;
When the self adaptation timer expiry, send the status report of PDU reception condition.
Embodiments of the present invention also provide a kind of receiving terminal, comprise:
Self-defining self adaptation timer;
Receive and judge module, be used to receive protocol Data Unit PDU, and after whenever receiving a protocol Data Unit PDU, judge whether the self adaptation timer starts;
Start module, be used for starting the self adaptation timer receiving and judge module when judging that the self adaptation timer does not start;
Group bag module is used for the PDU that receives and judge module is received is packaged, and judges whether that all PDU successfully organize bag;
Timer stops module, is used for stopping the self adaptation timer when group bag module judges that all PDU successfully organize bag;
The bottom pour ladle detection module is used for detecting whether there is bottom pour ladle when group bag module judges that also existence is not successfully organized the PDU of bag;
The timer restart module is used for detecting when not having bottom pour ladle at the bottom pour ladle detection module, restarts the self adaptation timer;
Sending module is used for when the self adaptation timer expiry, sends the status report of PDU reception condition.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:
A self-defined timer (self adaptation timer) after receiving a protocol Data Unit PDU, if this timer is in the off-duty state, then starts this timer.Receiving terminal packages to the PDU that receives, if all PDU successfully organize bag, then stops this timer, otherwise detects whether there is bottom pour ladle, and if there is no bottom pour ladle is then restarted this timer.When this timer expiry, send the status report of PDU reception condition.Because receiving terminal does not need the PDU that has the P position according to the transmit leg transmission, carry out the feedback of the status report of PDU reception condition, but whether overtime according to the self adaptation timer, judge whether that needs send the status report of PDU reception condition.Therefore avoided because the recipient does not know that transmit leg has sent the PDU that has the P position, and transmission that causes and recipient are in a stalemate of waiting for the other side's information mutually, can make transmitting terminal to retransmit fast and not be received and rectify the PDU that really receives.And, no longer need Timer_Poll_Periodic relevant and Timer_Status_Periodic timer with polling, also simplified existing polling mechanism simultaneously.
Further, the self adaptation length of timer can be disposed by radio resource control RRC, and is notified to receiving terminal.Owing to can count the transmission quality of each channel and the reception condition of a plurality of user terminals etc. at network side, therefore by network side configuration self adaptation length of timer, and this duration is notified to receiving terminal, can make that set self adaptation length of timer is more reasonable, can be applicable to a plurality of terminal equipments.
Further, the configuration messages by RRC is notified to receiving terminal.Because in existing protocol, each length of timer relevant with polling substantially all is to be specified by configuration messages by RRC, so the self adaptation length of timer also specified by configuration messages by RRC, can with prior art compatibility preferably.
Further, the self adaptation length of timer also can be set in advance by receiving terminal.By receiving terminal the self adaptation length of timer is set voluntarily, can makes realization of the present invention need not existing protocol is made any change, simple, the convenient realization.
Further, before the status report that sends the PDU reception condition, need judge also whether receiving terminal allows status report,, then send the status report of PDU reception condition again if allow.Because poor in network quality, when packet drop is serious, the situation of self adaptation timer expiry may take place too continually, therefore before the status report that sends the PDU reception condition, judge earlier whether receiving terminal is in the state that allows status report, can effectively avoid receiving terminal to send the status report of PDU reception condition too continually to network side.And transmitting terminal judged earlier whether receiving terminal is in the state that allows status report, also is existing mechanism in the prior art before the status report that sends the PDU reception condition, therefore also can be compatible better with prior art.
Description of drawings
Fig. 1 is according to the process chart on the receive direction in the status report sending method of the PDU reception condition of first embodiment of the invention;
Fig. 2 is according to the process chart on the sending direction in the status report sending method of the PDU reception condition of first embodiment of the invention;
Fig. 3 is the receiving terminal structural representation according to third embodiment of the invention.
Embodiment
In the following description, in order to make the reader understand the application better many ins and outs have been proposed.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on the many variations and the modification of following each execution mode, also can realize each claim of the application technical scheme required for protection.
For making the purpose, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below in conjunction with accompanying drawing.
First embodiment of the invention relates to a kind of status report sending method of protocol Data Unit reception condition, is applied in the polling mechanism under AM (affirmation) pattern of RLC.In the present embodiment, do not need to use Timer_Poll_Periodic relevant and Timer_Status_Periodic timer with polling, therefore can delete this Timer_Poll_Periodic and Timer_Status_Periodic timer, but need reset a timer, should be called self adaptation timer (Timer_Autonomic) by self-defining timer.Idiographic flow as depicted in figs. 1 and 2, Fig. 1 for receiving terminal after whenever receiving a legal PDU, the process chart on receive direction; Fig. 2 is the process chart of receiving terminal on sending direction.
Specifically, receiving terminal enters step 110 after whenever receiving a legal PDU, judges whether the self adaptation timer moves.If operation does not then enter step 120,, then directly enter step 130 if be in running status.
In step 120, receiving terminal starts self-defining self adaptation timer.In the present embodiment, the self adaptation length of timer is disposed by radio resource control RRC, and is notified to receiving terminal, as being notified to receiving terminal by the configuration messages from RRC.Owing to can count the transmission quality of each channel and the reception condition of a plurality of user terminals etc. at network side, therefore by network side configuration self adaptation length of timer, and this duration is notified to receiving terminal, can make that set self adaptation length of timer is more reasonable, can be applicable to a plurality of terminal equipments.And because in existing protocol, each length of timer relevant with polling substantially all is to be specified by configuration messages by RRC, so the self adaptation length of timer also specified by configuration messages by RRC, can with prior art compatibility preferably.
In step 130, receiving terminal packages to the PDU that receives.
That is to say, after the rlc layer of receiving terminal is received the legal PDU of a slice, check that immediately whether self adaptation timer (Timer_Autonomic) is in operation, if this timer is operation not, then open this timer, subsequently the PDU that receives is given the group packet procedures of RLC, promptly start the Service Data Unit group packet procedures of (Service Data Unit is called for short " SDU ").
Then, in step 140, receiving terminal judges whether that all PDU successfully organize bag, that is to say, after the group packet procedures of RLC finishes, judge again whether the PDU bag of being received has all been organized, then illustrate without any substitute if all form merit, enter step 150, stop the self adaptation timer, finish this flow process, after receiving next legal PDU, restart this flow process.If it not is that all PDU successfully organize bag that receiving terminal is judged, then explanation also has bag not organize, and enters step 160.
In step 160, detect whether there is bottom pour ladle.If after bottom pour ladle is checked, judge not have bottom pour ladle, then enter step 170, restart the self adaptation timer.If owing to find not have bottom pour ladle, then the remaining PDU (Protocol Data Unit) of explanation is the part of last SDU (Service Data Unit), therefore do not need institute to the self adaptation timer to add up between clocking, directly restart the self adaptation timer and get final product.
If in step 160, judge and also have bottom pour ladle, then explanation also has a PDU bag that does not belong to last SDU not receive at least, therefore allow self adaptation timer (Timer_Autonomic) continue timing, finish this flow process, after receiving next legal PDU, restart this flow process.
The handling process of receiving terminal on sending direction in step 210, judges whether current self adaptation timer is overtime as shown in Figure 2, if the self adaptation timer is not overtime, then explanation does not have PDU not receive in official hour, does not therefore need status report, finishes this flow process.If the self adaptation timer expiry, then explanation has at least a PDU to receive in official hour, should start the mechanism to reciprocity RLC status report, to the status report of its transmission to the PDU reception condition.
But in the present embodiment, before the status report that sends the PDU reception condition, be introduced into step 220, receiving terminal is judged the current situation that allows status report that whether is in, if allow status report, then enters step 230, receiving terminal sends the status report of PDU reception condition to reciprocity rlc layer, so that reciprocity rlc layer starts retransmission processes fast, break the stalemate that both sides are in mutual information such as the other side of grade, guarantee the normal operation of RLC.
If in step 220, judge not allow status report, then do not send the status report of PDU reception condition, but enter step 240 to reciprocity rlc layer, show the needs that status report is arranged.
Be not difficult to find, because in the present embodiment, receiving terminal does not need the PDU that has the P position according to the transmit leg transmission, carries out the feedback of the status report of PDU reception condition, but whether overtime according to the self adaptation timer, judge whether that needs send the status report of PDU reception condition.Therefore avoided because the recipient does not know that transmit leg has sent the PDU that has the P position, and transmit leg that causes and recipient are in a stalemate of waiting for the other side's information mutually, can make transmitting terminal to retransmit fast and not be received to rectify the PDU that really receives.That is to say, adopt the self adaptation polling mechanism of present embodiment, can prevent effectively that transmission and receiving terminal from entering stalemate, guarantees the normal transmission of RLC.
And, no longer need Timer_Poll_Periodic relevant and Timer_Status_Periodic timer with polling, also simplified existing polling mechanism simultaneously.
In addition, receiving terminal need judge also whether receiving terminal allows status report before the status report that sends the PDU reception condition, if allow, then sent the status report of PDU reception condition again.Because poor in network quality, when packet drop is serious, the situation of self adaptation timer expiry may take place too continually, therefore before the status report that is sending the PDU reception condition, judge earlier whether receiving terminal is in the state that allows status report, can effectively avoid receiving terminal to send the status report of PDU reception condition too continually to network side.And transmitting terminal judged earlier whether receiving terminal is in the state that allows status report, also is existing mechanism in the prior art before the status report that sends the PDU reception condition, therefore also can be compatible better with prior art.In addition, be appreciated that in actual applications also whether not allow the judgement of status report.
Second embodiment of the invention relates to a kind of status report sending method of protocol Data Unit reception condition.Second execution mode and first execution mode are basic identical, and difference mainly is:
In the first embodiment, the self adaptation length of timer is disposed by RRC, and is notified to receiving terminal, as being notified to receiving terminal by the configuration messages from RRC.Yet in second execution mode, the self adaptation length of timer is set in advance by receiving terminal, knows but not gone forward side by side to work by network side configuration.
By receiving terminal the self adaptation length of timer is set voluntarily, can makes realization of the present invention need not existing protocol is changed, simple, the convenient realization.In addition, be appreciated that in actual applications also can the self adaptation length of timer be set by other modes, the self adaptation length of timer specifically by which kind of mode is provided with, and there is no substantial influence with the present invention.
Each method execution mode of the present invention all can be realized in modes such as software, hardware, firmwares.No matter the present invention be with software, hardware, or the firmware mode realize, instruction code can be stored in the memory of computer-accessible of any kind (for example permanent or revisable, volatibility or non-volatile, solid-state or non-solid-state, fixing or removable medium or the like).Equally, memory can for example be programmable logic array (Programmable Array Logic, be called for short " PAL "), random access memory (Random Access Memory, be called for short " RAM "), programmable read only memory (Programmable Read Only Memory, be called for short " PROM "), read-only memory (Read-Only Memory, be called for short " ROM "), Electrically Erasable Read Only Memory (Electrically Erasable Programmable ROM, be called for short " EEPROM "), disk, CD, digital versatile disc (Digital Versatile Disc is called for short " DVD ") or the like.
Third embodiment of the invention relates to a kind of receiving terminal.Specifically as shown in Figure 3, this receiving terminal comprises:
Self-defining self adaptation timer, the self adaptation length of timer is disposed by radio resource control RRC, and is notified to receiving terminal, as being notified to receiving terminal by the configuration messages from RRC.
Receive and judge module, be used to receive protocol Data Unit PDU, and after whenever receiving a protocol Data Unit PDU, judge whether the self adaptation timer starts.
Start module, be used for starting the self adaptation timer receiving and judge module when judging that the self adaptation timer does not start.
Group bag module is used for the PDU that receives and judge module is received is packaged, and judges whether that all PDU successfully organize bag.
Timer stops module, is used for stopping the self adaptation timer when group bag module judges that all PDU successfully organize bag.
The bottom pour ladle detection module is used for detecting whether there is bottom pour ladle when group bag module judges that also existence is not successfully organized the PDU of bag.
The timer restart module is used for detecting when not having bottom pour ladle at the bottom pour ladle detection module, restarts the self adaptation timer.
Sending module is used for when the self adaptation timer expiry, sends the status report of PDU reception condition.
In addition, the receiving terminal of present embodiment can also comprise condition judgment module, be used for before sending module sends the status report of PDU reception condition, judge whether receiving terminal is in the situation that allows status report, if receiving terminal is in the situation that allows status report, then indicate sending module to send the status report of PDU reception condition again.In addition, be appreciated that in actual applications also whether not allow the judgement of status report.
Be not difficult to find that first execution mode is and the corresponding method execution mode of present embodiment, present embodiment can with the enforcement of working in coordination of first execution mode.The correlation technique details of mentioning in first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in the present embodiment also can be applicable in first execution mode.
Four embodiment of the invention relates to a kind of receiving terminal.The 4th execution mode and the 3rd execution mode are basic identical, and difference mainly is:
In the 3rd execution mode, the self adaptation length of timer is disposed by RRC, and is notified to receiving terminal.Yet in the 4th execution mode, the self adaptation length of timer is set in advance by receiving terminal.
Be not difficult to find that second execution mode is and the corresponding method execution mode of present embodiment, present embodiment can with the enforcement of working in coordination of second execution mode.The correlation technique details of mentioning in second execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in the present embodiment also can be applicable in second execution mode.
Need to prove, each unit of mentioning in each equipment execution mode of the present invention all is a logical block, physically, a logical block can be a physical location, it also can be the part of a physical location, can also realize that the physics realization mode of these logical blocks itself is not most important with the combination of a plurality of physical locations, the combination of the function that these logical blocks realized is the key that just solves technical problem proposed by the invention.In addition, for outstanding innovation part of the present invention, above-mentioned each the equipment execution mode of the present invention will not introduced not too close unit with solving technical problem relation proposed by the invention, and this does not show that there is not other unit in the said equipment execution mode.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (11)
1. the status report sending method of a protocol Data Unit reception condition is characterized in that, comprises following steps:
Receiving terminal is after whenever receiving a protocol Data Unit PDU, if be not activated self-defining self adaptation timer then start described self adaptation timer;
Described receiving terminal packages to the PDU that receives;
If all PDU successfully organize bag, then stop described self adaptation timer; If also there is the PDU that does not successfully organize bag, then detect whether there is bottom pour ladle, if there is no bottom pour ladle is then restarted described self adaptation timer;
When described self adaptation timer expiry, send the status report of PDU reception condition.
2. the status report sending method of protocol Data Unit reception condition according to claim 1 is characterized in that, described self adaptation length of timer is disposed by radio resource control RRC, and is notified to described receiving terminal.
3. the status report sending method of protocol Data Unit reception condition according to claim 2 is characterized in that, described self adaptation length of timer is notified to described receiving terminal by the configuration messages from described RRC.
4. the status report sending method of protocol Data Unit reception condition according to claim 1 is characterized in that, described self adaptation length of timer is set in advance by described receiving terminal.
5. according to the status report sending method of each described protocol Data Unit reception condition in the claim 1 to 4, it is characterized in that described receiving terminal also comprised following steps before the status report that sends described PDU reception condition:
Judge whether described receiving terminal is in the situation that allows status report,, then send the status report of described PDU reception condition again if described receiving terminal is in the situation that allows status report.
6. the status report sending method of protocol Data Unit reception condition according to claim 5 is characterized in that, the status report sending method of described protocol Data Unit reception condition is applied in the polling mechanism under the affirmation mode.
7. a receiving terminal is characterized in that, comprises:
Self-defining self adaptation timer;
Receive and judge module, be used to receive protocol Data Unit PDU, and after whenever receiving a protocol Data Unit PDU, judge whether the self adaptation timer starts;
Start module, be used for when described reception and judge module judge that described self adaptation timer does not start, starting described self adaptation timer;
Group bag module is used for the PDU that described reception and judge module are received is packaged, and judges whether all successful group bags of all PDU;
Timer stops module, is used for stopping described self adaptation timer when described group of bag module judges that all PDU successfully organize bag;
The bottom pour ladle detection module is used for detecting whether there is bottom pour ladle when described group of bag module judges that also existence is not successfully organized the PDU of bag;
The timer restart module is used for detecting when not having bottom pour ladle at described bottom pour ladle detection module, restarts described self adaptation timer;
Sending module is used for sending the status report of PDU reception condition when described self adaptation timer expiry.
8. receiving terminal according to claim 7 is characterized in that, described self adaptation length of timer is disposed by radio resource control RRC, and is notified to described receiving terminal.
9. receiving terminal according to claim 8 is characterized in that, described self adaptation length of timer is notified to described receiving terminal by the configuration messages from described RRC.
10. receiving terminal according to claim 7 is characterized in that, described self adaptation length of timer is set in advance by described receiving terminal.
11. receiving terminal according to claim 7 is characterized in that, described receiving terminal also comprises:
Condition judgment module, be used for before described sending module sends the status report of described PDU reception condition, judge whether described receiving terminal is in the situation that allows status report, if described receiving terminal is in the situation that allows status report, then indicate described sending module to send the status report of described PDU reception condition again.
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| CN 201010145009 CN101841856A (en) | 2010-04-12 | 2010-04-12 | Transmitting method and receiving terminal for state report of protocol data unit receiving situation |
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| CN106464543A (en) * | 2014-05-01 | 2017-02-22 | 诺基亚通信公司 | Method and apparatus for radio resource control in mobile network |
| CN107925665A (en) * | 2015-08-31 | 2018-04-17 | 高通股份有限公司 | Unnecessary protocol Data Unit (PDU) is avoided to transmit |
| CN108650258A (en) * | 2018-05-09 | 2018-10-12 | 东南大学 | Narrowband Internet of Things radio link protocol sub layer AM solid data adaptation transmitter methods |
| CN108668320A (en) * | 2017-03-31 | 2018-10-16 | 维沃移动通信有限公司 | A kind of segmentation group packet method and receiving terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106464543A (en) * | 2014-05-01 | 2017-02-22 | 诺基亚通信公司 | Method and apparatus for radio resource control in mobile network |
| CN107925665A (en) * | 2015-08-31 | 2018-04-17 | 高通股份有限公司 | Unnecessary protocol Data Unit (PDU) is avoided to transmit |
| CN107925665B (en) * | 2015-08-31 | 2019-05-14 | 高通股份有限公司 | Unnecessary protocol Data Unit (PDU) is avoided to transmit |
| CN108668320A (en) * | 2017-03-31 | 2018-10-16 | 维沃移动通信有限公司 | A kind of segmentation group packet method and receiving terminal |
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| CN108650258B (en) * | 2018-05-09 | 2021-03-02 | 东南大学 | Self-adaptive method for AM entity data transmission of narrow-band Internet of things wireless link protocol sublayer |
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Application publication date: 20100922 |