CN101742532B - Control method for mobile communication terminal to receive downlink data and mobile communication terminal - Google Patents
Control method for mobile communication terminal to receive downlink data and mobile communication terminal Download PDFInfo
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- CN101742532B CN101742532B CN2008102265815A CN200810226581A CN101742532B CN 101742532 B CN101742532 B CN 101742532B CN 2008102265815 A CN2008102265815 A CN 2008102265815A CN 200810226581 A CN200810226581 A CN 200810226581A CN 101742532 B CN101742532 B CN 101742532B
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- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 abstract description 6
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 description 42
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- 238000012545 processing Methods 0.000 description 21
- 230000000284 resting effect Effects 0.000 description 16
- 230000005059 dormancy Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000013468 resource allocation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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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
- H04L1/1829—Arrangements specially adapted for the receiver end
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention relates to a mobile communication technology, in particular to a technology for receiving downlink data by a mobile terminal with discontinuous reception, and provides a downlink data receiving control method and a mobile communication terminal, which are used for improving the success rate of receiving retransmission data. In the downlink data reception control method and the mobile communication terminal provided in the embodiments of the present invention, the third timer is used to monitor a time difference between an earliest arrival time of retransmitted data and a latest arrival time of retransmitted data, and when the third timer expires, the receiver is turned on to wait for receiving retransmitted data, and the fourth timer is simultaneously started to monitor a difference between the earliest arrival time and the latest arrival time of retransmitted data, so that it can be determined whether to turn off the receiver in time when the fourth timer expires. The method and the device ensure that the receiver keeps an open state in the time period when the retransmitted data possibly arrives, and improve the success rate of receiving the retransmitted data.
Description
Technical field
The present invention relates to mobile communication technology, particularly a kind of technology of portable terminal downlink data receiving of discontinuous reception.
Background technology
Discontinuous reception (Discontinuous Reception:DRX) function allows subscriber equipment (UserEquipment:UE) to close receiver under certain conditions; And needn't intercept Physical Downlink Control Channel (Physical Downlink Control Channel:PDCCH), thereby reach the purpose of saving the UE electric weight always.
The basic principle of DRX is illustrated in fig. 1 shown below; DRX cycle intercepts the stage (OnDuration) by the PDCCH that continues and the possible dormant stage (Opportunity for DRX) constitutes, and the unit of On Duration stage and Opportunity for DRX stage length is number of sub frames.In the On Duration stage; UE must continue to intercept the subframe that each comprises PDCCH; Resource allocation so that the uplink and downlink that obtain each subframe transmit is indicated; Frequency resource when confirming that according to the resource allocation of each subframe indication base station assigns is given oneself up-downgoing, and in the enterprising line data processing of the running time-frequency resource that is distributed etc.UE maybe not need continue to intercept PDCCH in the Opportunity for DRX stage.
At E-UTRAN (Evolved Universal Terrestrial Radio Access Network; The universal land radio access web of evolution) in the system; In order when not having data to receive and dispatch, to save the battery consumption of UE, UE can carry out DRX operation, i.e. temporary close receiver; With the time of the base station agreement corresponding PDCCH of monitoring that wakes up whether have data need send to UE so that be informed in the dormancy base stations during.The DRX operation includes the parameter of some settings and the timer that some are controlled; The parameter that for example comprises has DRX cycle (DRX Cycle), and the timer that comprises has duration section timer (OnDuration Timer), the nonactive timer of DRX (DRX Inactivity Timer) etc.UE monitors PDCCH in the On Duration period, do not send to own data when indicating if monitor the base station, to after date, promptly carries out resting state at On Duration Timer timer.If monitoring PDCCH in the On Duration period, UE knows when the data indication that sends to oneself is arranged; Then start DRX InactivityTimer; If before DRX Inactivity Timer timer expires; PDCCH has indicated transfer of data to give this user once more, and DRX Inactivity Timer will restart; Have only the DRX Inactivity Timer timer of working as and On Duration timer all to expire, this UE could get into the dormant stage.Therefore, the On Duration of UE in DRX cycle keeps activating (Active) state always, then possibly be in state of activation in the Opportunity forDRX stage, also possibly be in resting state.
At E-UTRAN (Evolved Universal Terrestrial Radio Access Network; The universal land radio access web of evolution) regulation DRX control and mixing retransmit (HybridAutomatic Repeat Request:HARQ) independent operating separately automatically in the system; Also just say; In the time of in HARQ, need carrying out the downlink data re-transmission; Evolution subscriber equipment (eUE) in the LTE system will necessarily start receiver according to HARQ RTT (the Round Trip Time) Timer that sets and intercept PDCCH regardless of the state of current DRX operation, to prepare to receive downlink retransmitted data.In addition, HARQ retransmits can further not influence normal DRX operation.And because the asynchronous HARQ of the descending employing of LTE; So also defined the DRX Retransmission Timer timer relevant among the existing LTER8 with descending HARQ Data Transmission Controlling; So that eUE can return to resting state when not receiving data retransmission within a certain period of time, close receiver.
Below with eUE in a sub-frame in On Duration stage; Confirm that through the resource allocation indication of intercepting PDCCH evolution base station (eNB) in the LTE system is an example for eUE has distributed the downlink data transmission resource in this subframe, specify the control flow that cooperates of eUE execution DRX and descending HARQ among LTE version 8 (Release8).
Referring to shown in Figure 2, be example with a DRX cycle, establishing DRX cycle is 20 sub-frame, and wherein: establishing On Duration stage length is two sub-frame, and DRX Inactivity Timer length is two sub-frame, the existing standard regulation, the length of a sub-frame is 1ms.If in first subframe in On Duration stage, eUE listens to the downlink data of issuing oneself, then the reception control procedure of downlink data specifically comprises the steps:
S201, eUE are that corresponding HARQ process starts first timer in first subframe of current DRX cycle, HARQ RTT (Round Trip Time) Timer timer, and handle downlink data; Simultaneously, eUE starts DRX Inactivity Timer;
Whether S202, eUE judgment data correctly receive, if correct the reception, then eUE is to eNB feeding back ACK (Acknowledgement); Do not receive if downlink data is correct, eUE feeds back NACK (Negative Acknowledgement) to eNB;
The purpose of HARQ RTT Timer timer is to confirm the minimum interval before possible data retransmission arrives; The length of HARQ RTT Timer timer can only be in open mode to guarantee UE receiver when retransmitting arrival smaller or equal to this minimum interval.In the prior art, eUE receives and handle downlink data generally needs 4ms, and promptly the 4th sub-frame after first subframe of current DRX cycle maybe be to eNB feeding back ACK or NACK; ACK or NACK arrive the propagation delay time of eNB and the temporal summation of eNB demodulation ACK or NACK is generally 4ms, like this, even eNB demodulates NACK and dispatches data retransmission at once; Then data retransmission can the 8th sub-frame after first subframe be handed down to eUE the soonest; Therefore, when setting the length of HARQ RTT Time timer, minimum interval generally is set at 8ms; Thereby guarantee at data retransmission arrival front opening receiver, to guarantee that data retransmission can be received.
S203, when HARQ RTT Timer expire and downlink data not by correct reception; Be eUE when eNB feedback NACK, eUE opens receiver, finishes resting state; Get into accepting state, start another timer DRX Retransmission Timer timer simultaneously.
The startup of DRX Retransmission Timer timer is the stand-by period that receives data retransmission in order to monitor; Prevent that eNB mistake is demodulated into NACK when no longer carrying out data re-transmission behind the ACK; EUE waits for unlimitedly; Its length maximum wait duration is as required confirmed, is disposed to eUE through Radio Resource control (Radio Resource Control:RRC) flow process by eNB.At DRX Retransmission Timer run duration,, then after the reception data finish, close receiver and enter into resting state if eUE correctly receives data retransmission; When the arrival of DRX Retransmission Timer setting duration did not all receive data retransmission, eUE then no longer waited for, closes receiver, is transferred to resting state.
If eUE listened in the On Duration stage downlink data indication of issuing oneself is not arranged on the PDCCH, UE just closed receiver after On Duration finished so, got into the dormant stage; If monitoring PDCCH in the On Duration period, UE knows when the data indication that sends to oneself is arranged; Then start DRXInactivityTimer; If before DRX Inactivity Timer timer expires; PDCCH has indicated transfer of data to give this user once more, and DRX InactivityTimer will restart; Have only the DRXInactivity Timer timer of working as and On Duration timer all to expire, this UE could get into the dormant stage.When eUE failed correct downlink data receiving, eUE also need open receiver to after date at HARQ RTT Timer, and the maximum duration of opening equals the duration of DRX Retransmission Timer.
But; If because the PDCCH of indicating downlink data retransmission transmission loses; Caused DRXRetransmission Timer to set duration arrival and all do not received data retransmission, can't receive the once more re-transmission of eNB for this eUE scheduling if eUE gets into resting state.
As shown in Figure 3, T
0When constantly listening to the downlink data indication, HARQ RTT Timer is activated, and HARQ RTT Timer is activated to after date DRX Retransmission Timer, if downlink data not by correct reception, then eUE is at T
1Constantly to eNB feedback NACK.ENB establishes the PDCCH that retransmits indication first and appears at T the earliest according to the data retransmission of NACK scheduling eUE
2Constantly, appear at T the latest
4Constantly, if this PDCCH that retransmits indication first loses, then eUE can be to the correct ACK that receives downlink retransmitted data of eNB feedback; If this fashion do not reach maximum retransmission, eNB then can be once more after the time span of the HARQ RTT Timer after last time PDCCH, dispatch data retransmission to eUE once more.Corresponding to possibly being T the earliest
2The PDCCH of re-transmission first that occurs constantly, it retransmits once more and appears at T the earliest
3Constantly: T
3=T
2+ HARQ RTT Timer appears at T at the latest
5Constantly, T
5=T
2+ HARQ RTTTimer+DRX Retransmission Timer=T
3+ DRX Retransmission Timer.Corresponding to possibly being T at the latest
4The PDCCH of re-transmission first that occurs constantly, it retransmits once more and appears at T the earliest
5Constantly, T
5=T
4+ HARQ RTT Timer appears at T at the latest
6Constantly, T
6=T
4+ HARQ RTT Timer+DRXRetransmission Timer=T
5+ DRX Retransmission Timer.In fact, data retransmission once more maybe be at T
3～T
6Any time all arrive.If eUE is according to DRX Retransmission Timer, from T
4Get into resting state after finishing, will miss T
4～T
6The data retransmission that occurs.
Summary of the invention
The embodiment of the invention provides a kind of downlink data acceptance control method and mobile communication terminal, in order to improve the success rate that receives data retransmission.
The control method of first kind of mobile communication terminal downlink data receiving that the embodiment of the invention provides comprises:
When the first timer of the data retransmission first time of advent that is used to monitor downlink data expires; If being in closed condition, receiver opens receiver; And starting the second timer be used to monitor the data retransmission stand-by period, the length of said first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first;
, said second timer do not receive data retransmission when expiring; And when confirming that said first timer length is greater than second timer length; Close receiver and start the 3rd timer, the length of said the 3rd timer deducts the difference of second timer length for first timer length;
When said the 3rd timer expires, open receiver and wait for to receive the data that retransmit once more, and start and be used for the 4th timer that monitoring receiver continues to open duration, the length of said the 4th timer is the twice of second timer length.
Further;, said second timer do not receive data retransmission when expiring; And when confirming that further said first timer length is not more than second timer length; Start the 5th timer and wait for to receive the data that retransmit once more, the length of said the 5th timer for first timer length add second timer length with.
Preferable, said first timer: be when the stage of intercepting of discontinuous reception receives the downlink data transmission indication, to start.
Perhaps, said first timer: be when correct downlink data receiving, confirm to send and start after downlink data does not correctly receive indication information to the base station.
And; When the start-up time of said first timer is identical with the transmitting time that does not correctly receive indication information; Said minimum interval is: saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station, add base station processes said correctly do not receive obtain behind the indication information required time with;
When start-up time of said first timer when correctly not receiving the transmitting time of indication information; Said minimum interval is: saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station; Add base station processes said correctly do not receive obtain behind the indication information required time with, obtain after adding the start-up time of first timer and correctly not receiving the time difference between the indication information transmitting time with;
When be later than the transmitting time that does not correctly receive indication information the start-up time of said first timer; Said minimum interval is: saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station; Add base station processes said that do not receive correctly that the indication information required time obtains with, deduct the start-up time of first timer again and correctly do not receive the value that obtains after the time difference between the indication information transmitting time.
Preferable, described control method also comprises: when confirming that downlink data is correctly received, return correct reception indication information to the base station.
The control method of second kind of mobile communication terminal downlink data receiving that the embodiment of the invention provides comprises:
When the first timer of the data retransmission first time of advent that is used to monitor downlink data expires; If being in closed condition, receiver opens receiver; And startup is used to monitor the second timer of data retransmission stand-by period; The length of said first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first, and said first timer length is greater than second timer length;
When said second timer expires, do not receive data retransmission and close receiver and start the 3rd timer, the length of said the 3rd timer deducts the difference of second timer length for first timer length;
When said the 3rd timer expires, open receiver and wait for to receive the data that retransmit once more, and start and be used for the 4th timer that monitoring receiver continues to open duration, the length of said the 4th timer is the twice of second timer length.
First kind of mobile communication terminal that the embodiment of the invention provides comprises:
Be used for when the first timer of data retransmission first time of advent of monitoring downlink data expires; If being in closed condition, receiver opens receiver; And starting the unit of the second timer be used to monitor the data retransmission stand-by period, the length of said first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first;
Be used for when said second timer expires, not receiving data retransmission; And when confirming that said first timer length is greater than second timer length; Close receiver and start the unit of the 3rd timer, the length of said the 3rd timer deducts the difference of second timer length for first timer length;
Be used for when said the 3rd timer expires, opening receiver and wait for and receive the data that retransmit once more, and start and be used for the unit that monitoring receiver continues to open the 4th timer of duration, the length of said the 4th timer is the twice of second timer length.
Further, mobile communication terminal also comprises:
Be used for when said second timer expires, not receiving data retransmission; And when confirming that further said first timer length is not more than second timer length; Start the unit that the 5th timer wait for to receive the data that retransmit once more, the length of said the 5th timer for first timer length add second timer length with.
Wherein, said first timer: be when the stage of intercepting of discontinuous reception receives the downlink data transmission indication, to start; Or when the correct downlink data receiving, confirm to send and start after downlink data does not correctly receive indication information to the base station.
Second kind of mobile communication terminal that the embodiment of the invention provides comprises:
Be used for when the first timer of data retransmission first time of advent of monitoring downlink data expires; If being in closed condition, receiver opens receiver; And start the unit of the second timer be used to monitor the data retransmission stand-by period; The length of said first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first, and said first timer length is greater than second timer length;
Be used for when said second timer expires, not receiving the unit that data retransmission is closed receiver and started the 3rd timer, the length of said the 3rd timer deducts the difference of second timer length for first timer length;
Be used for when said the 3rd timer expires, opening receiver and wait for and receive the data that retransmit once more, and start and be used for the unit that monitoring receiver continues to open the 4th timer of duration, the length of said the 4th timer is the twice of second timer length.
In sum; Downlink data acceptance control method and mobile communication terminal that the embodiment of the invention provides; Utilize the 3rd timer to monitor once more the earliest arrival time of data retransmission and data retransmission time difference between the time of advent the latest first; And when the 3rd timer expires, open the data that receiver waits for that reception retransmits once more, and start the 4th timer simultaneously; With the earliest arrival time of monitoring once more data retransmission and the difference between the time of advent the latest, thereby can, the 4th timer determine whether in time close receiver when expiring.Guaranteed that receiver stays open state in the time period that data retransmission once more possibly arrive, and has improved the success rate that receives data retransmission.
Description of drawings
Fig. 1 is the DRX controlling mechanism principle schematic of existing mobile communication terminal;
The downlink data that Fig. 2 and Fig. 3 are respectively existing mobile communication terminal receives the control principle sketch map;
The mobile communication terminal downlink data that Fig. 4, Fig. 5, Fig. 6 are respectively the embodiment of the invention to be provided receives the control principle sketch map.
Embodiment
As shown in Figure 4, the embodiment of the invention is for improve receiving the success rate of data retransmission, as the length of the DRXRetransmission Timer length less than HARQ RTT Timer, i.e. T
3Constantly appear at T
4In the time of constantly, following technical scheme is provided:
Step S401, eUE are at T
0When constantly listening to the downlink data indication, start first timer HARQ RTT Timer;
HARQ RTT Timer timer is used to monitor the time of advent of data retransmission first of downlink data, and HARQ RTT Timer timer length should be smaller or equal to the minimum interval between the start-up time of timer and the data retransmission arrival first.
Step S402, HARQ RTT Timer timer are at T
2Constantly expire, if eUE when HARQ RTTTimer timer expires in dormancy, receiver is in closed condition and then opens receiver, and starts second timer: DRX Retransmission Timer timer; If receiver had been in open mode when eUE expired at HARQ RTT Timer timer, then to keep receiver be open mode and start DRX Retransmission Timer timer;
DRX Retransmission Timer timer is used to monitor the data retransmission stand-by period, and length should be the data retransmission first difference between the time of advent and the earliest arrival time, i.e. T the latest
4Deduct T
2
Step S403, DRX Retransmission Timer timer are at T
4Constantly expire, when eUE expires at Retransmission Timer timer, do not get into resting state and start the 3rd timer, Timer X if receive data retransmission then close receiver;
Timer X timer is used to monitor once more the earliest arrival time of data retransmission and data retransmission time difference between the time of advent the latest first, and length is T
3Deduct T
4, the length that promptly equals HARQ RTT Timer timer deducts the length of DRX Retransmission Timer timer.
Step S404, when Timer X timer expires, eUE must open receiver and wait for receive the data that retransmit once more, and starts the 4th timer Timer Y simultaneously;
Timer Y timer be used for monitoring receiver be receive once more data retransmission continue to open duration, it should be once more the earliest arrival time of data retransmission and the difference between the time of advent the latest that the continuing of receiver opened duration, length is T
6Deduct T
3, promptly equal the twice of DRX Retransmission Timer timer length.
Like this; When Timer Y timer run duration receives once more data retransmission; EUE can not close receiver when having other relevant timer to move; When perhaps when Timer Y timer expires, still not receiving once more data retransmission, eUE also can close receiver when not having other relevant timer to move.Thereby, guaranteed at T
4～T
6Receiver is in open mode during this time, can receive the data retransmission once more that possibly occur, and make receiver at T
4～T
3Do not have once more the stage of data retransmission to be in closed condition during this time, saved the electric weight of eUE.
In the above-described embodiments; If limit the length of the length of DRX Retransmission Timer less than HARQRTT Timer, then in step S403, eUE can directly start the 3rd timer TimerX; If the length of unqualified DRX Retransmission Timer must be less than the length of HARQ RTT Timer; After then needing to confirm the length of length of DRX Retransmission Timer earlier, restart the 3rd timer Timer X, otherwise do not start the 3rd timer less than HARQ RTT Timer; But starting the 5th timer, concrete technical scheme is following.
As shown in Figure 5, when the length of DRX Retransmission Timer is not less than the length of HARQ RTT Timer, i.e. T
4Constantly appear at T
3In the time of constantly; EUE keeps receiver to be open mode and to start the 5th timer, NEW Timer timer after DRX Retransmission Timer expires; Its length is HARQ RTT Timer and DRX Retransmission Timer sum, and the receiver of eUE just can be at T like this
4～T
6Stage is in open mode, waits for receiving the data retransmission once more that possibly occur.
Fig. 4 and embodiment illustrated in fig. 5 in; The minimum interval of setting HARQ RTTTimer timer length comprises that following three part-time sum: eUE receive and handles the propagation delay time that downlink data required time, eUE send to ACK or the NACK of eNB, and eNB demodulation and handle ACK or the NACK required time.General, eUE receives and handle downlink data generally needs 4ms, i.e. the 4th sub-frame after first subframe of current DRX cycle, T
1Constantly maybe be to eNB feeding back ACK or NACK; ACK or NACK arrive the propagation delay time of eNB and the temporal summation of eNB demodulation ACK or NACK is generally 4ms, like this, even eNB demodulates NACK and dispatches data retransmission at once; Then data retransmission can the 8th sub-frame after first subframe be handed down to eUE the soonest; Therefore, when setting the length of HARQ RTTTime timer, minimum interval generally is set at 8ms.
Consider the correct downlink data receiving of eUE and when the eNB feeding back ACK; Do not have downlink retransmitted data to arrive, so the embodiment of the invention be the further electric energy loss of minimizing eUE, following improvement project also is provided; EUE is only after eNB feedback NACK; Restart the HARQ RTTTimer timer that the control data retransmission receives, avoided the timer behind the correct downlink data receiving to start, thereby saved the power consumption of eUE.As shown in Figure 6, comprise the steps:
Step S601, eUE are at T
0Receive constantly and handle downlink data, whether judgment data correctly receives;
Step S602, if correct the reception, then eUE is at T
1Constantly to the eNB feeding back ACK; Do not receive if downlink data is correct, eUE is at T
1Feed back NACK to eNB constantly, and be that corresponding HARQ process starts timer, the embodiment of the invention is referred to as eNB processing delay timer (eNB Processing Timer);
Step S603, when eNB Processing Timer timer expires; If eUE is in dormancy, receiver is in closed condition, and eUE opens receiver and finishes resting state; Get into the accepting state of data retransmission, start DRX Retransmission Timer timer simultaneously.
Step S604, DRX Retransmission Timer timer are at T
4Constantly expire, when eUE expires at DRXRetransmission Timer timer, do not get into resting state and start the 3rd timer, Timer X if receive data retransmission then close receiver;
Timer X timer is used to monitor once more the earliest arrival time of data retransmission and data retransmission time difference between the time of advent the latest first, and length is T
3Deduct T
4, the length that promptly equals HARQ RTT Timer timer deducts the length of DRX Retransmission Timer timer.
Step S605, when Timer X timer expires, eUE must open receiver and wait for receive the data that retransmit once more, and starts the 4th timer Timer Y simultaneously.
Timer Y timer be used for monitoring receiver be receive once more data retransmission continue to open duration, it should be once more the earliest arrival time of data retransmission and the difference between the time of advent the latest that the continuing of receiver opened the duration maximum, length is T
6Deduct T
3, promptly equal the twice of DRX Retransmission Timer timer.
Wherein: the effect of eNB Processing Timer timer is still the minimum interval before the monitoring data retransmission arrives; The length of eNB processing delay timer must be less than or equal to this minimum interval; Guaranteeing arriving the front opening receiver, when the expiring of eNB processing delay timer, if eUE is in resting state at data retransmission; EUE need open the receiver machine and finish resting state, receives data retransmission by the time.
EUE starts eNB Processing Timer timer can be identical with the time of sending NACK with the time; For example same subframe or same millisecond (ms); Also can be different, as long as the length of this timer is smaller or equal to time interval that the start-up time of eNB Processing Timer timer and the data retransmission of this downlink data the earliest maybe be between the times of advent.Data retransmission the earliest maybe the time of advent and start-up time of eNB ProcessingTimer timer between the time interval for retransmitting the minimum interval before the data arrives; ENB Processing Timer timer expires in the time of must or just in time reaching before data retransmission arrives, and opens receiver thereby trigger eUE.
When the transmitting time of start-up time of eNB Processing Timer timer and NACK is identical; Minimum interval is just: correctly do not receive the propagation delay time that indication information NACK transmits between mobile communication terminal and base station, add obtain behind the base station processes NACK required time with.When start-up time of eNBProcessing Timer timer during early than the transmitting time of NACK; Should correspondingly add the time difference between eNB Processing Timer timer start-up time and the NACK transmitting time between minimum time; Otherwise when be later than the transmitting time of NACK the start-up time of eNB Processing Timer timer, should the value that obtain after the time difference that deduct again between eNB Processing Timer timer start-up time and the NACK transmitting time between minimum time.
Below be all preferred embodiment mutually with the transmitting time of start-up time of eNB Processing Timer timer and NACK and be elaborated.
EUE receives data retransmission when DRX Retransmission Timer timer run duration; Then after receiving data retransmission, close receiver and get into resting state once more; Perhaps do not receive data retransmission, then after DRXRetransmission Timer timer is set duration arrival, close receiver and get into resting state once more at DRXRetransmission Timer timer run duration.Certainly, if when DRX Retransmission Timer timer expires, DRX Inactivity Timer is also not yet due, and then eUE need close receiver and gets into resting state once more at the DRX Inactivity Timer timer Shi Caineng that expires.
Like this, after eUE downlink data receiving and the correct reception of judgment data quilt,, therefore do not start eNB processing delay timer, thereby reduced the number of starts of timer, avoided additional electric energy consumption because the data re-transmission in later stage can not take place.Particularly in the good environment of communication condition, the data re-transmission odds is very low, has saved the power consumption of eUE especially greatly.
Visible referring to Fig. 4; The minimum interval of setting the length of HARQ RTT Timer timer comprises that following three part-time sum: eUE receive and handles the propagation delay time that downlink data required time, eUE send to ACK or the NACK of eNB, and eNB demodulation and handle ACK or the NACK required time.And referring to shown in Figure 6; The minimum interval of setting the length of corresponding eNB Processing Timer timer in the embodiment of the invention only need consider that eUE sends to propagation delay time and the eNB demodulation NACK required time of the NACK of eNB; Common; This two parts time sum equals eUE basically and receive to handle the downlink data required time, so when setting eNB processing delay timer maximum duration according to the propagation delay time of ACK or NACK and eNB demodulation ACK or NACK required time sum, 4ms for example; Thereby further reduced the running time of first timer, also just further saved the electric energy loss of eUE.Certainly, also can eNB Processing Timer length of timer be set at 3ms or 2ms etc.
The basis of above-mentioned analysis is that eUE is not after judgement has correct downlink data receiving; Can obtain to send the ascending resource of ACK or NACK feedback information, thereby successfully send ACK or NACK feedback information, according to the duplex mode of FDD system to eNB; In the FDD system, has no problem; But in the TDD system, owing to there are 7 kinds of different uplink and downlink timeslot proportionings, after the eUE judgement does not have correct downlink data receiving; Might not have uplink resources available at once; Be used for feeding back ACK or NACK, this has just caused the long enough that must the duration of DRX Retransmission Timer be set, could guarantee that eNB dispatches the data retransmission of eUE in DRX Retransmission Timer run duration.Therefore prior art is for the TDD system, must consider eUE in the some time after opening receiver all possibility do not receive data retransmission, this has just caused meaningless power consumption.Simultaneously, this means that also eNB must dispatch the downlink retransmitted data that sends to this eUE in the remaining time at DRXRetransmission Timer, and this will reduce the flexibility of eNB scheduling; And cause eUE can not use less DRX RetransmissionTimer, and like 1ms, 2ms etc.; And must adopt like 16ms; 24ms, the numerical value that 33ms etc. are bigger, thus further cause the electricity-saving function of DRX mechanism to be had a greatly reduced quality.And after the technical scheme that the employing embodiment of the invention provides; In the TDD system; Because the start-up time of eNB Processing Timer timer is for sending the time of NACK; When therefore setting eNB Processing Timer timer maximum duration; Needn't consider because time delay different between the downlink transfer that difference caused of TDD uplink and downlink timeslot proportioning and employed descending sub frame and corresponding uplink ACK or the NACK feedback information; Only need to consider that eUE sends to propagation delay time and the eNB demodulation NACK required time of the NACK of eNB, thereby in the TDD system, further reduced the running time of first timer, and improved the flexibility of eNB scheduling data retransmission.
Need to prove; Among above-mentioned all embodiment; After the correct reception of eUE judgment data, can not feed back any information yet, only when correctly not receiving, do not feed back NACK to eNB to eNB; Default data was by correct reception when eNB did not receive any feedback information of eUE like this, data retransmission when receiving NACK.
The embodiment of the invention is controlled to be example with the reception of a downlink data and has specified technical scheme, and in fact, the reception control procedure of each downlink data is identical.
The embodiment of the invention also provides first kind of mobile communication terminal, comprising:
Be used for when the first timer of data retransmission first time of advent of monitoring downlink data expires; If being in receiver is in closed condition then opens receiver; And starting the unit of the second timer be used to monitor the data retransmission stand-by period, the length of first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first;
Be used for when second timer expires, not receiving data retransmission; And definite first timer length is during greater than second timer length; Close receiver and start the unit of the 3rd timer, the length of the 3rd timer deducts the difference of second timer length for first timer length;
Be used for when the 3rd timer expires, opening receiver and wait for and receive the data that retransmit once more, and start and be used for the unit that monitoring receiver continues to open the 4th timer of duration, the length of the 4th timer is the twice of second timer length.
Further, first kind of mobile communication terminal that the embodiment of the invention provides also comprises:
Be used for when second timer expires, not receiving data retransmission; And when confirming that further first timer length is not more than second timer length; Start the unit that the 5th timer wait for to receive the data that retransmit once more, the length of the 5th timer for first timer length add second timer length with.
The embodiment of the invention also provides second kind of mobile communication terminal, comprising:
Be used for when the first timer of data retransmission first time of advent of monitoring downlink data expires; If being in closed condition, receiver opens receiver; And start the unit of the second timer be used to monitor the data retransmission stand-by period; The length of first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first, and first timer length is greater than second timer length;
Be used for when second timer expires, not receiving the unit that data retransmission is closed receiver and started the 3rd timer, the length of the 3rd timer deducts the difference of second timer length for first timer length;
Be used for when the 3rd timer expires, opening receiver and wait for and receive the data that retransmit once more, and start and be used for the unit that monitoring receiver continues to open the 4th timer of duration, the length of the 4th timer is the twice of second timer length.
Wherein, first timer: be when the stage of intercepting of discontinuous reception receives the downlink data transmission indication, to start; Perhaps
Be when correct downlink data receiving, confirm to send and start after downlink data does not correctly receive indication information to the base station.
In sum; Downlink data acceptance control method and mobile communication terminal that the embodiment of the invention provides; Utilize Timer X timer to monitor once more the earliest arrival time of data retransmission and data retransmission time difference between the time of advent the latest first; And when Timer X timer expires, open the data that receiver waits for that reception retransmits once more, and start timer Timer Y simultaneously; With the earliest arrival time of monitoring once more data retransmission and the difference between the time of advent the latest, thereby can, Timer Y determine whether in time close receiver when expiring.Thereby guaranteed that receiver stays open state in the time period that data retransmission once more possibly arrive, and has improved the reception success rate of data retransmission.
Further; The embodiment of the invention is not only being received the timer that the back startup is used to monitor the data retransmission time of reception by correct when downlink data receiving and judgment data; Start this timer under the situation of having avoided data correctly to receive; Thereby significantly reduced the number of starts of timer, avoided additional electric energy consumption.Further, also just further saved the electric energy loss of eUE owing to for sending the time of NACK, therefore can reduce the setting duration of timer, thereby further reduce the running time of first timer the start-up time of timer.And in the TDD system, avoid UE to open receiver in advance and wait for the reception data retransmission, improved the flexibility of eNB scheduling data retransmission simultaneously.
Obviously, those skilled in the art can carry out various changes and modification to the embodiment of the invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (18)
1. the control method of a mobile communication terminal downlink data receiving is characterized in that, comprising:
When the first timer of the data retransmission first time of advent that is used to monitor downlink data expires; If being in closed condition, receiver opens receiver; And starting the second timer be used to monitor the data retransmission stand-by period, the length of said first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first;
, said second timer do not receive data retransmission when expiring; And when confirming that said first timer length is greater than second timer length; Close receiver and start the 3rd timer, the length of said the 3rd timer deducts the difference of second timer length for first timer length;
When said the 3rd timer expires, open receiver and wait for to receive the data that retransmit once more, and start and be used for the 4th timer that monitoring receiver continues to open duration, the length of said the 4th timer is the twice of second timer length.
2. control method as claimed in claim 1 is characterized in that, also comprises:
, said second timer do not receive data retransmission when expiring; And when confirming that further said first timer length is not more than second timer length; Start the 5th timer and wait for to receive the data that retransmit once more, the length of said the 5th timer for first timer length add second timer length with.
3. according to claim 1 or claim 2 control method is characterized in that said first timer: be when the stage of intercepting of discontinuous reception receives the downlink data transmission indication, to start.
4. according to claim 1 or claim 2 control method is characterized in that said first timer: be when correct downlink data receiving, confirm to send to the base station and start after downlink data does not correctly receive indication information.
5. control method as claimed in claim 4; It is characterized in that; When the start-up time of said first timer is identical with the transmitting time that does not correctly receive indication information; Said minimum interval is: saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station, add base station processes said correctly do not receive obtain behind the indication information required time with;
When start-up time of said first timer when correctly not receiving the transmitting time of indication information; Said minimum interval is: saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station; Add base station processes said correctly do not receive obtain behind the indication information required time with, obtain after adding the start-up time of first timer and correctly not receiving the time difference between the indication information transmitting time with;
When be later than the transmitting time that does not correctly receive indication information the start-up time of said first timer; Said minimum interval is: saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station; Add base station processes said that do not receive correctly that the indication information required time obtains with, deduct the start-up time of first timer again and correctly do not receive the value that obtains after the time difference between the indication information transmitting time.
6. control method as claimed in claim 5; It is characterized in that; Saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station, add base station processes said correctly do not receive obtain behind the indication information required time and be: 4 milliseconds.
7. according to claim 1 or claim 2 control method is characterized in that, also comprises: when confirming that downlink data is correctly received, return correct reception indication information to the base station.
8. the control method of a mobile communication terminal downlink data receiving is characterized in that, comprising:
When the first timer of the data retransmission first time of advent that is used to monitor downlink data expires; If being in closed condition, receiver opens receiver; And startup is used to monitor the second timer of data retransmission stand-by period; The length of said first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first, and said first timer length is greater than second timer length;
When said second timer expires, do not receive data retransmission and close receiver and start the 3rd timer, the length of said the 3rd timer deducts the difference of second timer length for first timer length;
When said the 3rd timer expires, open receiver and wait for to receive the data that retransmit once more, and start and be used for the 4th timer that monitoring receiver continues to open duration, the length of said the 4th timer is the twice of second timer length.
9. control method as claimed in claim 8 is characterized in that, said first timer: be when the stage of intercepting of discontinuous reception receives the downlink data transmission indication, to start.
10. control method as claimed in claim 8 is characterized in that, said first timer: be when correct downlink data receiving, confirm to send to the base station and start after downlink data does not correctly receive indication information.
11. control method as claimed in claim 10; It is characterized in that; When the start-up time of said first timer is identical with the transmitting time that does not correctly receive indication information; Said minimum interval is: saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station, add base station processes said correctly do not receive obtain behind the indication information required time with;
When start-up time of said first timer when correctly not receiving the transmitting time of indication information; Said minimum interval is: saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station; Add base station processes said correctly do not receive obtain behind the indication information required time with, obtain after adding the start-up time of first timer and correctly not receiving the time difference between the indication information transmitting time with;
When be later than the transmitting time that does not correctly receive indication information the start-up time of said first timer; Said minimum interval is: saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station; Add base station processes said that do not receive correctly that the indication information required time obtains with, deduct the start-up time of first timer again and correctly do not receive the value that obtains after the time difference between the indication information transmitting time.
12. control method as claimed in claim 8; It is characterized in that; Saidly correctly do not receive the propagation delay time that indication information transmits between mobile communication terminal and base station, add base station processes said correctly do not receive obtain behind the indication information required time and be: 4 milliseconds.
13. like the arbitrary described control method of claim 8～12, it is characterized in that, also comprise: when confirming that downlink data is correctly received, return correct reception indication information to the base station.
14. a mobile communication terminal is characterized in that, comprising:
Be used for when the first timer of data retransmission first time of advent of monitoring downlink data expires; If being in closed condition, receiver opens receiver; And starting the unit of the second timer be used to monitor the data retransmission stand-by period, the length of said first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first;
Be used for when said second timer expires, not receiving data retransmission; And when confirming that said first timer length is greater than second timer length; Close receiver and start the unit of the 3rd timer, the length of said the 3rd timer deducts the difference of second timer length for first timer length;
Be used for when said the 3rd timer expires, opening receiver and wait for and receive the data that retransmit once more, and start and be used for the unit that monitoring receiver continues to open the 4th timer of duration, the length of said the 4th timer is the twice of second timer length.
15. mobile communication terminal as claimed in claim 14 is characterized in that, also comprises:
Be used for when said second timer expires, not receiving data retransmission; And when confirming that further said first timer length is not more than second timer length; Start the unit that the 5th timer wait for to receive the data that retransmit once more, the length of said the 5th timer for first timer length add second timer length with.
16., it is characterized in that said first timer: be when the stage of intercepting of discontinuous reception receives the downlink data transmission indication, to start like claim 14 or 15 described mobile communication terminals; Perhaps
Be when correct downlink data receiving, confirm to send and start after downlink data does not correctly receive indication information to the base station.
17. a mobile communication terminal is characterized in that, comprising:
Be used for when the first timer of data retransmission first time of advent of monitoring downlink data expires; If being in closed condition, receiver opens receiver; And start the unit of the second timer be used to monitor the data retransmission stand-by period; The length of said first timer is smaller or equal to first timer start-up time and the minimum interval of data retransmission between the time of advent first, and said first timer length is greater than second timer length;
Be used for when said second timer expires, not receiving the unit that data retransmission is closed receiver and started the 3rd timer, the length of said the 3rd timer deducts the difference of second timer length for first timer length;
Be used for when said the 3rd timer expires, opening receiver and wait for and receive the data that retransmit once more, and start and be used for the unit that monitoring receiver continues to open the 4th timer of duration, the length of said the 4th timer is the twice of second timer length.
18. mobile communication terminal as claimed in claim 17 is characterized in that, said first timer:
Be when the stage of intercepting of discontinuous reception receives the downlink data transmission indication, to start; Perhaps
Be when correct downlink data receiving, confirm to send and start after downlink data does not correctly receive indication information to the base station.
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| CN2008102265815A CN101742532B (en) | 2008-11-14 | 2008-11-14 | Control method for mobile communication terminal to receive downlink data and mobile communication terminal |
| PCT/CN2009/001260 WO2010054535A1 (en) | 2008-11-14 | 2009-11-13 | Control method for receiving downlink data in the mobile communication terminal and mobile communication terminal |
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| CN2008102265815A CN101742532B (en) | 2008-11-14 | 2008-11-14 | Control method for mobile communication terminal to receive downlink data and mobile communication terminal |
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| CN102761942B (en) * | 2011-04-29 | 2015-01-21 | 华为技术有限公司 | State switching method, inactive timer starting method and user equipment |
| CN111181708B (en) | 2012-04-12 | 2022-09-02 | 北京三星通信技术研究有限公司 | Data processing method and device |
| CN103546892B (en) * | 2012-09-26 | 2016-12-21 | 深圳友讯达科技股份有限公司 | A kind of data transmission method, Apparatus and system |
| WO2016165070A1 (en) | 2015-04-14 | 2016-10-20 | 华为技术有限公司 | Methods and devices for transmitting uplink information, transmitting and receiving downlink information, and system scheduling |
| CN109511157B (en) * | 2017-09-15 | 2022-02-11 | 珠海市魅族科技有限公司 | Data discontinuous receiving method and data discontinuous receiving device |
| AU2017439568A1 (en) * | 2017-11-17 | 2020-04-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for listening to PDCCH, and terminal device |
| CN109982416B (en) * | 2017-12-27 | 2022-04-12 | 珠海市魅族科技有限公司 | Method and device for receiving and sending data |
| CN112205045B (en) * | 2018-05-21 | 2023-11-10 | 上海诺基亚贝尔股份有限公司 | Hybrid automatic repeat request in non-terrestrial networks |
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| CN1949697A (en) * | 2005-10-14 | 2007-04-18 | 大唐移动通信设备有限公司 | Data transmission method for ensuring receiver and transmitter data identification |
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| CN101170725A (en) * | 2006-10-24 | 2008-04-30 | 华为技术有限公司 | Data receiving, transmitting method and device |
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| CN101411095B (en) * | 2006-03-28 | 2013-06-19 | 三星电子株式会社 | Method and apparatus for discontinuous reception of connected terminal in a mobile communication system |
| CN101222479B (en) * | 2007-01-09 | 2011-04-20 | 中兴通讯股份有限公司 | Method for implementing wireless links control layer with active retransmission and period answer |
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| CN1949697A (en) * | 2005-10-14 | 2007-04-18 | 大唐移动通信设备有限公司 | Data transmission method for ensuring receiver and transmitter data identification |
| CN101170725A (en) * | 2006-10-24 | 2008-04-30 | 华为技术有限公司 | Data receiving, transmitting method and device |
| CN101127587A (en) * | 2007-09-25 | 2008-02-20 | 中兴通讯股份有限公司 | A method for triggering automatic retransfer request status report |
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