CN102781073B - The uplink synchronisation method received based on noncontinuity and system, base station - Google Patents
The uplink synchronisation method received based on noncontinuity and system, base station Download PDFInfo
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- CN102781073B CN102781073B CN201110120910.XA CN201110120910A CN102781073B CN 102781073 B CN102781073 B CN 102781073B CN 201110120910 A CN201110120910 A CN 201110120910A CN 102781073 B CN102781073 B CN 102781073B
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Abstract
The invention discloses a kind of uplink synchronisation method received based on noncontinuity and system, base station, wherein, the method includes: after the DRX of mobile terminal enables, and base station determines that the duration of the TA intervalometer arranged for mobile terminal in advance is not more than the duration of the DRX cycle distributed in advance for mobile terminal；After mobile terminal enters DRX cycle, base station determines that the number of times that accesses of mobile terminal is more than the number of times thresholding pre-set；During DRX cycle, base station issues up timing controlled order to safeguard the uplink synchronous of mobile terminal at predetermined time to mobile terminal.By the present invention, base station sends time unifying control command with maintaining uplink synchronization state to mobile terminal, and then can effectively reduce traffic packets time delay, reduce mobile terminal and consume electricity and improve systematic function.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of uplink synchronisation method received based on noncontinuity and system, base station.
Background technology
Along with the development of mobile communication technology, the disposal ability of mobile terminal the most constantly strengthens, it is provided that function increase rapidly.Following mobile communication system, while providing the higher availability of frequency spectrum, higher data rate and more rich multimedia service, it is also proposed higher requirement to the power problems of mobile terminal.
LTE (LongTermEvolution, Long Term Evolution) power problems to mobile terminal is considered in system, micro-sleep function (that is: mobile terminal can be made to be in unactivated state) is provided, to reduce power consumption for mobile terminal.DRX (DiscontinuousReception in LTE, discontinuous reception) represent that mobile terminal is not to PDCCH (PhysicalDownlinkControlChannel in given subframe, Physical Downlink Control Channel) detect, battery saving mode can be directly entered.Owing to the schedule information of up-link is to obtain in descending PDCCH, therefore, the setting of DRX parameter all can produce impact for the performance of uplink downlink.
DRX function is mobile terminal when setting up radio bearer (acquiescence or special), and requirement is activated, by realize the configuration of multiple DRX parameters and intervalometer according to traffic performance and the uplink downlink of mobile terminal in base station.Main DRX parameter includes: DRX cycle (the longest DRX cycle), duration timer (OnDurationTimer), DRX inactivity timer (DRXInactivityTimer), DRX retransmission timer (DRXRetransmissionTimer), short DRX cycle and short DRX cycle intervalometer, the configuration of its short-and-medium DRX cycle is optional, and the configuration of long DRX cycle is essential.
Additionally, in LTE system, in order to avoid intra-cell interference, need to ensure that UE different in community maintains up orthogonality in the time calibration of base station receiver side, the time change of upward signal arrival base station can be offset in base station by constantly updating Timing Advance, now, base station and mobile terminal can safeguard a TA (TimeAlignment, time unifying) intervalometer, in intervalometer range of operation, mobile terminal is up with base station keeps Tong Bu, if TA timer expiry, then mobile terminal uplink loss.
In actual applications, may be improper because of DRX parameter configuration, thus cause increasing service delay.Such as, as it is shown in figure 1, the DRX of this mobile terminal configuration is long period (assuming that long DRX cycle is 1280ms), TA timer length is 500ms.Then when meeting DRX cycle, after entering OnDuration, if the most supreme downlink business, terminal is put into resting state after OnDurationTimer time-out, during this state, after TA timer expiry, there is uplink loss, if now there being base station to have downlink business, then, after needing terminal by the time to enter the activation phase and need first to notify that terminal performs Stochastic accessing acquisition uplink synchronous, just can issue downlink service data.As in figure 2 it is shown, t1 is from there being downlink business to produce the waiting time that terminal activates, t2 is to obtain the access procedure required for uplink synchronous, and is to synchronize if up state, then the time of t2 can save.For uplink service, also same problem is had to occur, if terminal has uplink service to send, due to DRX cycle longer (relative TA timer duration), so being easy to uplink loss, the most first to carry out Stochastic accessing just can carry out data transmission after obtaining synchronization, too increase service delay.
As mentioned above, in the related, if when DRX cycle and TA intervalometer unreasonable allocation, after entering DRX cycle every time, mobile terminal all can be easy to uplink loss, so when carrying out up-downgoing business, it is required for first re-accessing network and obtains uplink synchronous, in extreme circumstances, after possible each up-downgoing business packet first will experience random access procedure, just can be transmitted, thus increase service delay and the interacting message due to access procedure also can increase network overhead, waste interface-free resources.
Summary of the invention
Present invention is primarily targeted at and a kind of uplink synchronisation method received based on noncontinuity and system, base station are provided, at least to solve one of the problems referred to above.
According to an aspect of the present invention, provide a kind of uplink synchronisation method received based on noncontinuity, including: after the DRX of mobile terminal enables, base station determines that the duration of the TA intervalometer arranged for mobile terminal in advance is not more than the duration of the DRX cycle distributed in advance for mobile terminal；After mobile terminal enters DRX cycle, base station determines that the number of times that accesses of mobile terminal is more than the number of times thresholding pre-set；During DRX cycle, base station issues up timing controlled order to safeguard the uplink synchronous of mobile terminal at predetermined time to mobile terminal.
Above-mentioned base station determines that the access number of times of mobile terminal includes more than the number of times thresholding pre-set: the number of times that Statistical Physics down control channel instruction instruction mobile terminal in base station accesses, it is thus achieved that first number that mobile terminal accesses because receiving downlink data；Base station obtains, by the uplink sync status of synchronous maintenance mobile terminal, second number that mobile terminal accesses because sending upstream data；First number and second number sum as accessing number of times, are determined that access number of times is more than number of times thresholding by base station.
Wherein, above-mentioned number of times thresholding is arranged according to the packet delay budget parameters of the service quality QoS of the radio bearer of mobile terminal.
Above-mentioned base station includes by issuing up timing controlled order at predetermined time to mobile terminal: the base station duration T by DRX cycleLongDrxCycle, the duration T of TA intervalometerTA, obtain the frequency n needing to issue up timing controlled orderTA:Base station calculates according to below equation needs to issue the predetermined instant t of up timing controlled order:
Base station issues up timing controlled order at the predetermined instant t determined to mobile terminal.
Before the DRX of mobile terminal enables, said method also includes: this mobile terminal, when carrying out radio resource control RRC and connecting, obtains the duration that base station is the TA intervalometer that mobile terminal is arranged from the RRC connection establishment message that base station sends；When setting up radio bearer, mobile terminal is from the duration obtaining the DRX cycle that base station is mobile terminal distribution from the RRC reallocation message of base station.
After the DRX of mobile terminal enables, said method also includes: mobile terminal judges that the duration of TA intervalometer is not more than the duration of DRX cycle；Mobile terminal, according to setting in advance, obtains base station in DRX cycle and issues the predetermined time of up timing controlled order；When predetermined instant arrives, mobile terminal judges to be presently at resting state or state of activation, if resting state, then wakes up up at predetermined instant, to receive up timing controlled order.
According to a further aspect in the invention, provide a kind of base station, including: first determines module, is used for, after the noncontinuity of mobile terminal receives DRX enable, determining that the duration of the time unifying TA intervalometer arranged for mobile terminal in advance is not more than the duration of the DRX cycle distributed the most in advance for mobile terminal；Second determines module, and after mobile terminal enters DRX cycle, determine mobile terminal accesses number of times more than the number of times thresholding pre-set；Sending module, for during DRX cycle, issues up timing controlled order to safeguard the uplink synchronous of mobile terminal at predetermined time to mobile terminal.
Described sending module includes: the first calculating sub module, for by the duration T of described DRX cycleLongDrxCycle, the duration T of described TA intervalometerTA, obtain the frequency n needing to issue described up timing controlled orderTA:Second calculating sub module, needs to issue the described predetermined instant t of described up timing controlled order for calculating according to below equation:
Send submodule, issue described up timing controlled order for the described predetermined instant t determined in described second calculating sub module to described mobile terminal.
According to a further aspect in the invention, provide a kind of uplink synchronous system received based on noncontinuity, this system includes mobile terminal and above-mentioned base station, wherein, mobile terminal includes: the first acquisition module, for obtaining the duration that base station is the TA intervalometer that mobile terminal is arranged and the duration of the DRX cycle that base station is mobile terminal distribution；Judge module, for judging whether the duration of TA intervalometer is not more than the duration of DRX cycle, if it is, trigger the second acquisition module；Second acquisition module, for according to setting in advance, obtains base station in DRX cycle and sends the predetermined time of up timing controlled order；Perform module, for when predetermined instant arrives, it is judged that be presently at resting state or state of activation, if resting state, then wake up mobile terminal up in the scheduled time, to receive up timing controlled order.
Pass through the present invention, base station is after mobile terminal carries out DRX cycle, when mobile terminal needs to carry out the number of times of Stochastic accessing, when exceeding certain thresholding, base station issues up timing controlled order to safeguard the uplink synchronous of mobile terminal in particular moment to mobile terminal, thus solve mobile terminal and the problem of uplink loss the most frequently occurs after enabling DRX function, and then reach to effectively reduce traffic packets time delay, reduce terminal power consumption amount and then improve system performance effectiveness.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of time-out in DRX cycle of the TA intervalometer according to prior art；
Fig. 2 is that the front mobile terminal of downlink data arrival that has according to prior art first carries out the schematic diagram of Stochastic accessing；
Fig. 3 is the flow chart of the uplink synchronisation method received based on noncontinuity according to embodiments of the present invention；
Fig. 4 is the schematic flow sheet that the uplink synchronous received based on noncontinuity according to the preferred embodiment of the invention processes；
Fig. 5 is the structural representation of base station according to embodiments of the present invention；
Fig. 6 is the structural representation that the second of base station according to the preferred embodiment of the invention determines module；
Fig. 7 is the structural representation of the sending module of base station according to the preferred embodiment of the invention；
Fig. 8 is the structural representation of the uplink synchronous system received based on noncontinuity according to embodiments of the present invention.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Fig. 3 is the uplink synchronisation method flow chart received based on noncontinuity of the embodiment of the present invention, and the method mainly includes the following steps that (step S302-step S306):
Step S302, after the DRX of mobile terminal enables, base station determines that the duration of the TA intervalometer arranged for mobile terminal in advance is not more than the duration of the DRX cycle distributed in advance for mobile terminal；
In embodiments of the present invention, before the DRX of mobile terminal enables, mobile terminal, when carrying out RRC (RadioResourceControl, wireless heterogeneous networks) connection, obtains the duration that base station is the TA intervalometer that mobile terminal is arranged from the RRC connection establishment message that base station sends；When setting up radio bearer, mobile terminal is from the duration obtaining the DRX cycle that base station is mobile terminal distribution from the RRC reallocation message of base station.
In actual applications, when mobile terminal is when carrying out RRC connection establishment, base station can configure special TA intervalometer to each terminal by RRC connection establishment message, and timer duration can use TTARepresent；When setting up radio bearer, base station also can carry out the configuration of DRX parameter, the cycle T of the longest DRX in RRC reallocation messageLongDrxCycleRepresent.After DRX function enables, compare the size of TA intervalometer and DRX cycle, in embodiments of the present invention, assume that terminal is configured without short DRX cycle, if the duration of TA intervalometer is more than DRX cycle, then need not carry out follow-up step, otherwise, follow-up step is proceeded.
Step S304, after mobile terminal enters DRX cycle, base station determines that the number of times that accesses of mobile terminal is more than the number of times thresholding pre-set；
Wherein, the mobile terminal number of times that accesses after entering DRX cycle includes access number of times and the access number of times of mobile terminal when producing downlink business of mobile terminal during generation uplink service.Therefore, in embodiments of the present invention, the number of times that base station can be accessed with Statistical Physics down control channel instruction instruction mobile terminal, obtain first number that mobile terminal accesses because receiving downlink data, and obtain, by the uplink sync status of synchronous maintenance mobile terminal, second number that mobile terminal accesses because sending upstream data, then compare the size between first number and second number sum and default number of times thresholding.
In embodiments of the present invention, after once mobile terminal enters DRX cycle, if business is less, the TA intervalometer of mobile terminal is easy to time-out, cause uplink loss, therefore, base station can record the number of times that during owing to there being business to occur, mobile terminal accesses, and exceedes number of times thresholding (that is: n when accessing number of timesthreshold) time, continue subsequent step.
Wherein, number of times thresholding can be configured according to the packet delay budget parameters of the service quality (QoS) of the radio bearer of mobile terminal, and such as, if packet delay budget is little, it is a little bit smaller that this threshold value just can be arranged.
Step S306, during DRX cycle, base station issues up timing controlled order to safeguard the uplink synchronous of mobile terminal at predetermined time to mobile terminal.
Such as, in embodiments of the present invention, base station can be by the duration T of DRX cycleLongDrxCycle, the duration T of TA intervalometerTA, obtain the frequency n needing to issue up timing controlled orderTA:
Then, base station calculates according to below equation needs to issue the predetermined instant t of up timing controlled order every time:
Such as, during DRX cycle, base station can be fixed increase and issue the number of times of up timing controlled order (TACMD), and mobile terminal is after DRX enables, judge whether the duration of TA intervalometer is not more than the duration of DRX cycle, if it is, mobile terminal can obtain base station in DRX cycle and send the predetermined time of up timing controlled order in the way of employing is identical with base station.When predetermined instant arrives, mobile terminal judges to be presently at resting state or state of activation, if resting state, then wakes up up at predetermined instant, to receive up timing controlled order.
Such as, in actual applications, in order to prevent in DRX cycle because TA intervalometer cannot safeguard the uplink loss caused, base station and mobile terminal are according to configuration parameter, when meeting certain condition, carry out one or many TA intervalometer in particular moment and safeguard, wherein it is possible to by TLongDrxCycle/TTAAs the number of times needing maintenance, and issue the moment of up Timing Synchronization control command according to above formula calculation base station every time, i.e. mobile terminal may receive the moment of TACMD, when this moment arrives, judge that current time is in sleep (sleep) state or active (activation) state, if sleep state, wake up up in this moment and receive up timing controlled order, if can not be correctly decoded, the most no longer open retransmission timer, it is no longer waiting for retransmitting packet, though TA timer expiry, confirmation (ACK/NAK) Normal Feedback of TACMD.
In embodiments of the present invention, base station and mobile terminal can make an appointment particular moment wake up up 1ms receive base station up timing controlled order, with maintaining uplink synchronization.Such that it is able to by the least expense, get reducing of service delay in return.Wherein, the number of times that when base station record has business to occur, mobile terminal accesses, the data service Han uplink and downlink of business packet here.
Certainly, if mobile terminal does not receive TACMD or downstream transmission blocks (TB) does not has correct decoding in particular moment (that is: base station calculate need to issue up timing controlled order when), the most do not restart RTT intervalometer and retransmission timer, wait and retransmit data.
The said method provided by the embodiment of the present invention, base station is after mobile terminal carries out DRX cycle, when mobile terminal needs to carry out the number of times of Stochastic accessing, when exceeding certain thresholding, base station issues up timing controlled order to safeguard the uplink synchronous of mobile terminal in particular moment to mobile terminal, thus solve mobile terminal and the problem of uplink loss the most frequently occurs after enabling DRX function, and then reach to effectively reduce traffic packets time delay, reduce terminal power consumption amount and then improve system performance effectiveness.
Fig. 4 is the uplink synchronous handling process schematic diagram received based on noncontinuity according to the preferred embodiment of the invention, and as shown in Figure 4, this handling process may comprise steps of (step S401-S405):
Step S401, mobile terminal completes RRC connection establishment and receives the DRX configuration parameter of reallocation message；
Step S402, base station judges whether the duration of TA intervalometer is not more than long DRX cycle, if it is, perform step S403, otherwise, performs step S406；
Step S403, the access number of times of mobile terminal when base station statistical service occurs, wherein, this business includes upstream data service and downstream data traffic；
Such as, base station can arrange an enumerator, for calculating the access number of times of mobile terminal, when this mobile terminal enters DRX cycle, the value of this enumerator is initial value, in this DRX cycle, often there is a random access operation in mobile terminal, this enumerator is added 1 by base station.Such as, for downstream data traffic, when base station gets, from PDCCHOrder, the signaling that instruction terminal accesses, this enumerator adds 1；For upstream data service, due to base station also at the uplink sync status of synchronous maintenance mobile terminal, therefore, base station can also get mobile terminal, owing to needing to carry out upstream data service, the information of Stochastic accessing occur, thus adds 1 by this enumerator.
Step S404, base station judges that the access number of times of mobile terminal, whether more than number of times thresholding, if it is, perform step S405, otherwise, performs step S406；
Step S405, base station calculates according to the duration of TA intervalometer and DRX cycle needs the TACMD's increased to issue the moment, and mobile terminal wakes up up to receive TACMD issuing the moment；
Step S406, terminates.
In the preferred implementation of the present embodiment, have attached to network at mobile terminal, by obtaining the duration T of special TA intervalometer during RRC connection establishmentTA, and obtain DRX configuration parameter T by reallocation messageLongDrxCycleAfterwards, mobile terminal to judge whether to meet the condition of DRX of entering, and the state of active/sleep repeatedly at each Transmission Time Interval (TransmissionTimeInterval, referred to as TTI).Such as, TA intervalometer is configured to 500ms, and long DRX cycle is configured to 1280ms, when mobile terminal is after entering the persistent period (OnDuration), have received a bag downstream transmission blocks (TB), wherein contain TACMD, now, base station and terminal restart TA intervalometer.Subsequently, after terminal experienced by persistent period (OnDuration) and inactivity timer (InactivityTimer), enter sleep (sleep) state, and in the process, uplink loss occurs.Now, first the cycle size of TA intervalometer and DRX is compared, in the case of the length of TA intervalometer is not more than DRX cycle, base station begins to add up the access number of times of mobile terminal when every time having business to occur, if generation downlink business, then base station can be obtained by the number of times that PDCCH instruction (Order) instruction mobile terminal accesses, if there is uplink service, base station can be by getting access number of times when the uplink sync status of synchronous maintenance mobile terminal.
After access number of times exceedes thresholding, base station calculates the moment issuing TACMD according to TA intervalometer and DRX cycle, specifically determines the method issuing the moment: first calculate the frequency n issuing TACMDTA:Be equivalent in this exampleCalculate needs the moment t issuing TACMD to be every time again:
Such as, the moment that issues in this preferred embodiment is { 427ms, 854ms}, skew is with duration timer Startup time as standard, because this moment of base station and mobile terminal is consistent, so issuing TACMD with identical standard in the identical skew moment, can align in both sides, be properly received.
It should be noted that, after access number of times exceedes thresholding, whether issue TACMD to be determined by base station, mobile terminal simply judges TA intervalometer and the relation of DRX intervalometer, certainly, base station can also judge TA intervalometer and the relation of DRX intervalometer, if base station determines to issue TACMD, then mobile terminal needs to wake up from sleep state to return to state of activation, and at the reception TACMD of several activation.
In correlation technique, for under the RRC_CONNNECTED state in LTE system, if DRX cycle and TA intervalometer unreasonable allocation, then after entering DRX cycle, mobile terminal all can be easy to uplink loss occur, so when carrying out up-downgoing business every time, it is required for first re-accessing network and obtains uplink synchronous again, so, the most just increase service delay, and add network overhead (interacting message of access procedure).
The said method that the embodiment of the present invention provides is when mobile terminal is due to the situation of generation uplink loss frequent after enabling DRX function, base station record needs the number of times carrying out Stochastic accessing, when exceeding certain thresholding, in the specific moment, allowing base station issue TA order makes base station and terminal carry out the maintenance of TA intervalometer, therefore can be according to the configuration feature of the traffic performance of terminal and TA intervalometer and DRX parameter, adaptive wake up terminal up to carry out the maintenance of uplink sync status in the specific moment, traffic packets time delay can be effectively reduced, reduce terminal power consumption amount and then improve systematic function.
The embodiment of the present invention additionally provides a kind of base station, and this base station may be used for realizing the said method that the embodiment of the present invention provides.Fig. 5 is the structural representation of base station according to embodiments of the present invention, as it is shown in figure 5, this base station includes: first determines module 10, second determine module 20 and sending module 30.Wherein, first determines module 10, after enabling at the DRX of mobile terminal, determines that the duration of the TA intervalometer arranged for mobile terminal in advance is not more than the duration of the DRX cycle distributed in advance for mobile terminal；Second determines module 20, is connected to first and determines module 10, and after entering DRX cycle at mobile terminal, determine mobile terminal accesses number of times more than the number of times thresholding pre-set；Sending module 30, is connected to second and determines module 20, for during DRX cycle, issues up timing controlled order to safeguard the uplink synchronous of mobile terminal at predetermined time to mobile terminal.
In a preferred implementation of the embodiment of the present invention, as shown in Figure 6, second determines that module 20 may include that the first statistics submodule 22, second is added up submodule 24 and judges submodule 26.Wherein, the first statistics submodule 22, the number of times accessed for Statistical Physics down control channel instruction instruction mobile terminal, it is thus achieved that first number that mobile terminal accesses because receiving downlink data；Second statistics submodule 24, for by obtaining, at the uplink sync status of synchronous maintenance mobile terminal, second number that mobile terminal accesses because sending upstream data；Judge submodule 26, be connected to the second statistics submodule 24 and the first statistics submodule 22, for judging that whether first number and second number sum are more than number of times thresholding.
In another preferred implementation of the embodiment of the present invention, as it is shown in fig. 7, sending module 30 may include that first calculating sub module the 32, second calculating sub module 34 and sends submodule 36.Wherein, the first calculating sub module 32, for by the duration T of DRX cycleLongDrxCycle, the duration T of TA intervalometerTA, obtain the frequency n needing to issue up timing controlled orderTA:Second calculating sub module 34, is connected to the first calculating sub module 32, needs to issue the predetermined instant t of up timing controlled order for calculating according to below equation:
Send submodule 36, be connected to the second calculating sub module 34, issue up timing controlled order for the predetermined instant t determined in the second calculating sub module 34 to mobile terminal.
The above-mentioned base station provided by the embodiment of the present invention, after mobile terminal carries out DRX cycle, when mobile terminal needs to carry out the number of times of Stochastic accessing, when exceeding certain thresholding, the sending module 30 of base station issues up timing controlled order to safeguard the uplink synchronous of mobile terminal in particular moment to mobile terminal, thus solve mobile terminal and the problem of uplink loss the most frequently occurs after enabling DRX function, and then reach to effectively reduce traffic packets time delay, reduce terminal power consumption amount and then improve system performance effectiveness.
Fig. 8 is the structural representation of the uplink synchronous system received based on noncontinuity according to embodiments of the present invention, as shown in Figure 8, this system includes: mobile terminal 4 and base station 5, wherein, base station 5 can be for base station shown in any one figure in above-mentioned Fig. 5-7, mobile terminal 4 includes: the first acquisition module 42, for obtaining the duration that base station 5 is the TA intervalometer that mobile terminal 4 is arranged and the duration of the DRX cycle that base station 5 is mobile terminal 4 distribution；Judge module 44, is connected to the first acquisition module 42, for judging whether the duration of TA intervalometer is not more than the duration of DRX cycle, if it is, trigger the second acquisition module；Second acquisition module 46, is connected to judge module 44, for according to setting in advance, obtains base station 5 in DRX cycle and sends the predetermined time of up timing controlled order；Perform module 48, be connected to the second acquisition module 46, for when predetermined instant arrives, judge to be presently at resting state or state of activation, if resting state, then wake up mobile terminal 4 up in the scheduled time, to receive the up timing controlled order that base station 5 issues.
As can be seen from the above description, in embodiments of the present invention, in order to prevent in DRX cycle, because TA intervalometer cannot safeguard that the uplink loss caused, base station and terminal are according to configuration parameter, when meeting certain condition, carry out one or many TA intervalometer in particular moment and safeguard.A small amount of electric energy is only consumed owing to waking up terminal up at specific several TTI, and have business to occur all to carry out Stochastic accessing every time, the time that receiver is held open state is much longer, and therefore, the technical scheme using the embodiment of the present invention to provide can more save final energy.It addition, in embodiments of the present invention, it is not necessary to change TA timer length, needs when, only change TA adjust mode, thus reduce re-accessing network and obtain the expense and time delay synchronized.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned present invention or each step can realize with general calculating device, they can concentrate on single calculating device, or it is distributed on the network that multiple calculating device is formed, alternatively, they can realize with calculating the executable program code of device, thus, can be stored in storing in device and be performed by calculating device, and in some cases, can be to be different from the step shown or described by order execution herein, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single integrated circuit module realize.So, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (10)
1. the uplink synchronisation method received based on noncontinuity, it is characterised in that including:
After the noncontinuity of mobile terminal receives DRX enable, base station determines that the duration of the time unifying TA intervalometer arranged for described mobile terminal in advance is not more than the duration of the DRX cycle distributed the most in advance for described mobile terminal；
After described mobile terminal enters described DRX cycle, described base station determines that the number of times that accesses of described mobile terminal is more than the number of times thresholding pre-set；
During described DRX cycle, described base station issues up timing controlled order to safeguard the uplink synchronous of described mobile terminal at predetermined time to described mobile terminal.
Method the most according to claim 1, it is characterised in that described base station determines that the access number of times of described mobile terminal includes more than the number of times thresholding pre-set:
The Statistical Physics down control channel instruction of described base station indicates the number of times that described mobile terminal accesses, it is thus achieved that first number that described mobile terminal accesses because receiving downlink data；
Described base station obtains, by the uplink sync status of mobile terminal described in synchronous maintenance, second number that described mobile terminal accesses because sending upstream data；
Described first number and described second number sum as described access number of times, are determined that described access number of times is more than described number of times thresholding by described base station.
Method the most according to claim 1, it is characterised in that described number of times thresholding is arranged according to the packet delay budget parameters of the service quality QoS of the radio bearer of described mobile terminal.
Method the most according to claim 1, it is characterised in that described base station includes by issuing up timing controlled order at predetermined time to described mobile terminal:
The described base station duration T by described DRX cycleLongDrxCycle, the duration T of described TA intervalometerTA, obtain the frequency n needing to issue described up timing controlled orderTA:
Described base station calculates according to below equation needs to issue the described predetermined time t of described up timing controlled order:
Described base station issues described up timing controlled order at the described predetermined time t determined to described mobile terminal.
Method the most as claimed in any of claims 1 to 4, it is characterised in that before the DRX of described mobile terminal enables, described method also includes:
Described mobile terminal, when carrying out radio resource control RRC and connecting, obtains the duration that described base station is the TA intervalometer that described mobile terminal is arranged from the RRC connection establishment message that described base station sends；
When setting up radio bearer, described mobile terminal is from the duration obtaining the described DRX cycle that described base station is the distribution of described mobile terminal from the RRC reallocation message of described base station.
Method the most according to claim 5, it is characterised in that after the DRX of described mobile terminal enables, described method also includes:
Described mobile terminal judges that the duration of described TA intervalometer is not more than the duration of described DRX cycle；
Described mobile terminal, according to setting in advance, obtains described base station in described DRX cycle and issues the described predetermined time of described up timing controlled order；
When described predetermined time arrives, described mobile terminal judges to be presently at resting state or state of activation, if resting state, then wakes up up at described predetermined time, to receive described up timing controlled order.
7. a base station, it is characterised in that including:
First determines module, after receiving DRX enable in the noncontinuity of mobile terminal, determines that the duration of the time unifying TA intervalometer arranged for described mobile terminal in advance is not more than the duration of the DRX cycle distributed in advance for described mobile terminal；
Second determines module, and after described mobile terminal enters described DRX cycle, determine described mobile terminal accesses number of times more than the number of times thresholding pre-set；
Sending module, for during described DRX cycle, issues up timing controlled order to safeguard the uplink synchronous of described mobile terminal at predetermined time to described mobile terminal.
Base station the most according to claim 7, it is characterised in that described second determines that module includes:
First statistics submodule, indicates the number of times of described mobile terminal access, it is thus achieved that first number that described mobile terminal accesses because receiving downlink data for the instruction of Statistical Physics down control channel；
Second statistics submodule, for obtaining, by the uplink sync status of mobile terminal described in synchronous maintenance, second number that described mobile terminal accesses because sending upstream data；
Judge submodule, be used for judging that whether described first number and described second number sum are more than described number of times thresholding.
Base station the most according to claim 7, it is characterised in that described sending module includes:
First calculating sub module, for by the duration T of described DRX cycleLongDrxCycle, the duration T of described TA intervalometerTA, obtain the frequency n needing to issue described up timing controlled orderTA:
Second calculating sub module, needs to issue the described predetermined time t of described up timing controlled order for calculating according to below equation:
Send submodule, issue described up timing controlled order for the described predetermined time t determined in described second calculating sub module to described mobile terminal.
10. the uplink synchronous system received based on noncontinuity, it is characterised in that including: the base station according to any one of mobile terminal and claim 7 to 9, wherein, described mobile terminal includes:
First acquisition module, for obtaining the duration that described base station is the TA intervalometer that described mobile terminal is arranged and the duration of the DRX cycle that described base station is the distribution of described mobile terminal；
Judge module, for judging whether the duration of described TA intervalometer is not more than the duration of described DRX cycle, if it is, trigger the second acquisition module；
Described second acquisition module, for according to setting in advance, obtains described base station in described DRX cycle and sends the described predetermined time of described up timing controlled order；
Perform module, for when described predetermined time arrives, it is judged that be presently at resting state or state of activation, if resting state, then wake up described mobile terminal up at described predetermined time, to receive described up timing controlled order.
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| WO2014101229A1 (en) * | 2012-12-31 | 2014-07-03 | 华为技术有限公司 | Data transmission method and base station |
| CN103402245B (en) * | 2013-07-24 | 2016-12-28 | 中国联合网络通信集团有限公司 | The collocation method of a kind of discontinuous reception DRX period, equipment and system |
| CN106464403B (en) * | 2014-05-09 | 2019-07-09 | 三星电子株式会社 | Device and method for avoiding the interference in device-to-device wireless communication system |
| WO2016061786A1 (en) * | 2014-10-23 | 2016-04-28 | 华为技术有限公司 | Data re-synchronization method and apparatus |
| US9629090B2 (en) * | 2015-05-22 | 2017-04-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Ready timer period splitting for extended coverage global system for mobile communications (EC-GSM) |
| US11082933B2 (en) | 2015-11-30 | 2021-08-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for redefining a time alignment timer of a wireless communication network, corresponding user equipment and network node |
| EP3944682A1 (en) * | 2015-11-30 | 2022-01-26 | Telefonaktiebolaget LM Ericsson (publ) | Method for redefining a time alignment timer of a wireless communication network, corresponding network node. |
| CN108307495B (en) | 2016-08-11 | 2020-12-04 | 华为技术有限公司 | Tracking processing method and device for UE in low power consumption mode |
| US10432378B2 (en) * | 2016-09-30 | 2019-10-01 | Qualcomm Incorporated | Use of reference signals to improve user equipment (UE) warm-up before transitioning from an OFF duration of the UE to an on duration of the UE with respect to a radio frequency spectrum band |
| CN108809537B (en) * | 2017-05-04 | 2019-11-05 | 维沃移动通信有限公司 | A kind of timer configuration method, user terminal, network side equipment and system |
| CN109548054B (en) * | 2017-09-21 | 2022-08-19 | 珠海市魅族科技有限公司 | Method and device for keeping downlink synchronization |
| WO2019174025A1 (en) | 2018-03-16 | 2019-09-19 | 华为技术有限公司 | Wake-up management method, timer management method, and terminal device |
| CN110691399B (en) * | 2018-07-06 | 2021-09-14 | 展讯通信（上海）有限公司 | Internet of things terminal, awakening method and device thereof and storage medium |
| CN112911718A (en) * | 2019-12-03 | 2021-06-04 | 普天信息技术有限公司 | DRX (discontinuous reception) resource adjusting method, base station and user terminal |
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