CN102781073A - Uplink synchronization method and system and base station based on non-continuous reception - Google Patents
Uplink synchronization method and system and base station based on non-continuous reception Download PDFInfo
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- CN102781073A CN102781073A CN201110120910XA CN201110120910A CN102781073A CN 102781073 A CN102781073 A CN 102781073A CN 201110120910X A CN201110120910X A CN 201110120910XA CN 201110120910 A CN201110120910 A CN 201110120910A CN 102781073 A CN102781073 A CN 102781073A
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Abstract
The invention discloses an uplink synchronization method and system and a base station based on non-continuous reception. The method comprises the following steps that after DRX (discontinuous reception) of a mobile terminal is enabled, the base station determines that the duration of a TA timer which is preset for the mobile terminal is no more than the duration of the DRX period which is pre-distributed for the mobile terminal; after the mobile terminal enters the DRX period, the base station determines that the access time of the mobile terminal is larger than the preset time threshold; during the DRX period, the base station issues an uplink timing control command to the mobile terminal at the preset time so as to maintain the uplink synchronization of the mobile terminal. With the adoption of the method, the system and the base station provided by the invention, the base station sends time aligning control command to the mobile terminal to maintain the uplink synchronization state, thereby effectively reducing the business package delay, reducing power consumption of the mobile terminal and improving the performance of the system.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of uplink synchronisation method that receives based on noncontinuity and system, base station.
Background technology
Along with the development of mobile communication technology, the disposal ability of portable terminal also constantly strengthens, and the function that provides increases rapidly.Following GSM is also had higher requirement to the power consumption of mobile terminals problem when the higher availability of frequency spectrum, higher data rate and abundanter multimedia service are provided.
In LTE (Long Term Evolution, the Long Term Evolution) system power consumption of mobile terminals problem is considered, for portable terminal provides microsleep dormancy function (that is: can make portable terminal be in unactivated state), to reduce power consumption.DRX among the LTE (Discontinuous Reception; Discontinuous reception) is illustrated in the given subframe portable terminal not to PDCCH (Physical Downlink Control Channel; Physical Downlink Control Channel) detects, can directly get into battery saving mode.Because the schedule information of up link is in descending PDCCH, to obtain, therefore, the setting of DRX parameter all can exert an influence for the performance of uplink downlink.
The DRX function is a portable terminal when setting up radio bearer (acquiescence or special-purpose), and requirement is activated according to the traffic performance and the uplink downlink of portable terminal in the base station, realizes through the configuration to a plurality of DRX parameters and timer.Main DRX parameter comprises: DRX cycle (being also referred to as long DRX cycle), duration timer (On Duration Timer), the non-Active Timer of DRX (DRX Inactivity Timer), DRX retransmission timer (DRX Retransmission Timer), short DRX cycle and short DRX cycle timer; Its short-and-medium DRX cycle configuration is optional, and long DRX cycle configuration is essential.
In addition, in the LTE system, in the sub-district, disturb; Need to guarantee that different UE keeps up orthogonality in the sub-district in the time calibration of base station receiver side, the time variation that upward signal arrives the base station can be offset through continuous renewal Timing Advance in the base station, at this moment; Base station and portable terminal can be safeguarded a TA (Time Alignment; Time unifying) timer, in the timer range of operation, the up maintenance in portable terminal and base station is synchronous; If TA timer expiry, then portable terminal uplink loss.
In practical application, may be improper because of the DRX parameter configuration, thus cause increasing service delay.For example, as shown in Figure 1, the DRX of this mobile terminal configuration is long period (supposing that long DRX cycle is 1280ms), and TA timer length is 500ms.Then ought satisfy DRX cycle, get into On Duration after, if this moment supreme downlink business; The terminal just gets into resting state after On Duration Timer is overtime, during this state, behind the TA timer expiry; Uplink loss takes place; If have the base station that downlink business is arranged this moment, after then need waiting the terminal to get into active period and needing earlier the notice terminal to carry out to insert at random to obtain uplink synchronous, just can issue downlink service data.As shown in Figure 2, t1 is for from there being downlink business to produce the stand-by period that the terminal is activated, and t2 is for obtaining the needed access procedure of uplink synchronous, and if uplink state is synchronous, then the time of t2 can save.For uplink service; Also there is same problem to take place; If the terminal has uplink service to send, because DRX cycle long (TA timer duration relatively), so be easy to take place uplink loss; Also to insert at random earlier this moment and just can carry out transfer of data after obtaining synchronously, also increase service delay.
As stated, in correlation technique, if when DRX cycle and TA timer unreasonable allocation; Behind each entering DRX cycle, portable terminal all can be easy to take place uplink loss, like this when carrying out the up-downgoing business; All need first re-accessing network to obtain uplink synchronous; Under extreme case, possible each up-downgoing business packet just can be sent after all will experiencing random access procedure earlier; Thereby increased service delay and, wasted interface-free resources because the interacting message of access procedure also can increase network overhead.
Summary of the invention
Main purpose of the present invention is to provide a kind of uplink synchronisation method that receives based on noncontinuity and system, base station, one of to address the above problem at least.
According to an aspect of the present invention; A kind of uplink synchronisation method that receives based on noncontinuity is provided; Comprise: after the DRX of portable terminal enabled, the base station was confirmed in advance to be not more than in advance the duration for the DRX cycle of portable terminal distribution for the TA length of timer of portable terminal setting; After portable terminal got into DRX cycle, the base station confirmed that the access number of times of portable terminal is greater than the number of times thresholding that is provided with in advance; During DRX cycle, the base station issues up timing controlled order to safeguard the uplink synchronous of portable terminal to portable terminal constantly preset.
Above-mentioned base station confirms that the access number of times of portable terminal comprises greater than the number of times thresholding that is provided with in advance: the number of times that base station Statistical Physics down control channel instruction indicating mobile terminal inserts obtains first number that portable terminal inserts because of the need downlink data receiving; The base station obtains second number that portable terminal inserts because of need transmission upstream data through the uplink synchronous state of synchronous maintenance portable terminal; Number of times as inserting number of times, is confirmed to insert greater than the number of times thresholding with first number and second number sum in the base station.
Wherein, above-mentioned number of times thresholding is provided with according to the packet delay budget parameters of the service quality QoS of the radio bearer of portable terminal.
Above-mentioned base station comprises through issuing up timing controlled order in the preset moment to portable terminal: the base station is through the duration T of DRX cycle
LongDrxCycle, TA length of timer T
TA, obtain to issue the frequency n that up timing controlled is ordered
TA:
The base station need issue the predetermined instant t of up timing controlled order according to following formula calculating:
Before the DRX of portable terminal enabled, said method also comprised: this portable terminal is when carrying out the radio resource control RRC connection, and the RRC connection of sending from the base station is set up and obtained the base station the message is the TA length of timer that portable terminal is provided with; When setting up radio bearer, portable terminal obtains the duration that the base station is the DRX cycle of portable terminal distribution from the RRC reallocation message from the base station.
After the DRX of portable terminal enabled, said method also comprised: portable terminal judges that the TA length of timer is not more than the duration of DRX cycle; Portable terminal is according in advance setting, obtains the preset moment that in DRX cycle base station issues up timing controlled order; When predetermined instant arrived, portable terminal judged and currently to be in resting state or state of activation, if resting state then wakes up at predetermined instant, to receive up timing controlled order.
According to a further aspect in the invention; A kind of base station is provided; Comprise: first determination module; Be used for after the noncontinuity of portable terminal receives DRX and enables, confirm in advance to be not more than in advance duration for the DRX cycle of portable terminal distribution for the time unifying TA length of timer of portable terminal setting; Second determination module, after portable terminal got into DRX cycle, the access number of times of confirming portable terminal was greater than the number of times thresholding that is provided with in advance; Sending module is used for during DRX cycle, issues up timing controlled order to safeguard the uplink synchronous of portable terminal to portable terminal constantly preset.
Said sending module comprises: first calculating sub module is used for the duration T through said DRX cycle
LongDrxCycle, said TA length of timer T
TA, obtain to issue the frequency n that said up timing controlled is ordered
TA:
Second calculating sub module is used for need issuing the said predetermined instant t that said up timing controlled is ordered according to following formula calculating:
According to a further aspect in the invention; A kind of uplink synchronous system that receives based on noncontinuity is provided; This system comprises portable terminal and above-mentioned base station; Wherein, portable terminal comprises: first acquisition module, and being used to obtain TA length of timer and the base station that the base station is the portable terminal setting is the duration of the DRX cycle of portable terminal distribution; Judge module is used to judge whether the TA length of timer is not more than the duration of DRX cycle, if then trigger second acquisition module; Second acquisition module is used for the setting according in advance, obtains the preset moment that up timing controlled order is sent in DRX cycle base station; Executive Module is used for when predetermined instant arrives, and judges currently to be in resting state or state of activation, if resting state is then waken portable terminal at the fixed time up, to receive up timing controlled order.
Through the present invention; The base station is after portable terminal carries out DRX cycle; When the number of times that portable terminal need insert at random, when surpassing certain thresholding, the base station issues up timing controlled order to safeguard the uplink synchronous of portable terminal in particular moment to portable terminal; Thereby solved portable terminal frequent easily problem that uplink loss takes place after enabling the DRX function, and then reached and effectively reduce the traffic packets time delay, reduce terminal power consumption and then improve the systematic function effect.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is TA timer according to a prior art overtime sketch map in DRX cycle;
Fig. 2 is the sketch map that has the preceding portable terminal of downlink data arrival to insert at random earlier according to prior art;
Fig. 3 is the flow chart according to the uplink synchronisation method that receives based on noncontinuity of the embodiment of the invention;
Fig. 4 is the schematic flow sheet of handling based on the uplink synchronous of noncontinuity reception according to the preferred embodiment of the invention;
Fig. 5 is the structural representation according to the base station of the embodiment of the invention;
Fig. 6 is the structural representation of second determination module of base station according to the preferred embodiment of the invention;
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 according to the uplink synchronous system that receives based on noncontinuity of the embodiment of the invention.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Fig. 3 is the uplink synchronisation method flow chart based on the noncontinuity reception of the embodiment of the invention, and this method mainly may further comprise the steps (step S302-step S306):
Step S302, after the DRX of portable terminal enabled, the base station was confirmed in advance to be not more than in advance the duration for the DRX cycle of portable terminal distribution for the TA length of timer of portable terminal setting;
In embodiments of the present invention; Before the DRX of portable terminal enables; Portable terminal is carrying out RRC (Radio Resource Control, Radio Resource control) when connecting, and the RRC connection of sending from the base station is set up and obtained the base station the message is the TA length of timer that portable terminal is provided with; When setting up radio bearer, portable terminal obtains the duration that the base station is the DRX cycle of portable terminal distribution from the RRC reallocation message from the base station.
In practical application, when portable terminal connects when setting up carrying out RRC, the base station can connect through RRC set up message and give each terminal configuration special-purpose TA timer, and timer duration can be used T
TAExpression; When setting up radio bearer, the configuration of DRX parameter also can be carried out in the base station in the RRC reallocation message, and wherein the cycle of long DRX is used T
LongDrxCycleExpression.After the DRX function enables, compare the size of TA timer and DRX cycle, in embodiments of the present invention; Suppose that the terminal does not dispose short DRX cycle, if the TA length of timer greater than DRX cycle, then needn't be carried out follow-up step; Otherwise, proceed follow-up step.
Step S304, after portable terminal got into DRX cycle, the base station confirmed that the access number of times of portable terminal is greater than the number of times thresholding that is provided with in advance;
The access number of times of portable terminal when wherein, the access number of times of portable terminal after getting into DRX cycle comprises the access number of times of portable terminal when producing uplink service and produce downlink business.Therefore; In embodiments of the present invention; The base station can the Statistical Physics down control channel number of times that inserts of instruction indicating mobile terminal; Obtain first number that portable terminal inserts because of the need downlink data receiving, and the uplink synchronous state through the synchronous maintenance portable terminal obtains portable terminal and sends second number that upstream data inserts because of need, then the size between first number and second number sum and the number of times thresholding preset relatively.
In embodiments of the present invention; In case after portable terminal got into DRX cycle, if business more after a little while, the TA timer of portable terminal was easy to overtime; Cause taking place uplink loss; Therefore, the base station can be write down because the number of times that portable terminal inserts when professional the generation arranged, and surpasses number of times thresholding (that is: n when inserting number of times
Threshold) time, continue subsequent step.
Wherein, the number of times thresholding can be provided with according to the packet delay budget parameters of the service quality (QoS) of the radio bearer of portable terminal, such as, if the packet delay budget is little, it is a little bit smaller that this threshold value just can be provided with.
Step S306, during DRX cycle, the base station issues up timing controlled order to safeguard the uplink synchronous of portable terminal to portable terminal constantly preset.
For example, in embodiments of the present invention, the base station can be through the duration T of DRX cycle
LongDrxCycle, TA length of timer T
TA, obtain to issue the frequency n that up timing controlled is ordered
TA:
Then, the base station need issue the predetermined instant t of up timing controlled order at every turn according to following formula calculating:
For example; During DRX cycle, the base station can be fixed increases the number of times that issues up timing controlled order (TACMD), and portable terminal is after DRX enables; Judge whether the TA length of timer is not more than the duration of DRX cycle; If portable terminal can adopt the mode identical with the base station, obtain the preset moment that up timing controlled order is sent in DRX cycle base station.When predetermined instant arrived, portable terminal judged and currently to be in resting state or state of activation, if resting state then wakes up at predetermined instant, to receive up timing controlled order.
For example, in practical application, in order to prevent in DRX cycle because the TA timer can't be safeguarded the uplink loss that causes; Base station and portable terminal, carry out one or many TA timer in particular moment and safeguard when satisfying certain condition according to configuration parameter; Wherein, can be with T
LongDrxCycle/ T
TAThe number of times of safeguarding as needs, and issue moment of up timing synchronous control command according to the following formula calculation base station at every turn, promptly portable terminal may be received the moment of TA CMD; When this arrives constantly, judge that current time is in sleep (sleep) state or active (activation) state, if the sleep state; Wake up constantly at this and to receive the order of up timing controlled; If can not correctly decode, also no longer open retransmission timer, no longer wait for retransmission packet; Even the TA timer expiry, the normal feedback of the affirmation information (ACK/NAK) of TA CMD.
In embodiments of the present invention, base station and portable terminal can be made an appointment and waken the up timing controlled order that 1ms receives the base station up in particular moment, and be synchronous with maintaining uplink.Thereby can use very little expense, get dwindling of service delay in return.Wherein, the number of times that portable terminal inserted when the base station recorded professional the generation, the business here comprises the uplink and downlink data service.
Certainly; If portable terminal does not receive that in particular moment (that is: base station calculating need issue the moment of up timing controlled order) TA CMD or downstream transmission blocks (TB) do not have correct decoding; Just do not restart RTT timer and retransmission timer, wait for data retransmission.
The said method that provides through the embodiment of the invention; The base station is after portable terminal carries out DRX cycle; The number of times that need insert at random when portable terminal; When surpassing certain thresholding; The base station issues the order of up timing controlled safeguarding the uplink synchronous of portable terminal in particular moment to portable terminal, thereby has solved portable terminal frequent easily problem that uplink loss takes place after enabling the DRX function, and then has reached and effectively reduce the traffic packets time delay, reduce terminal power consumption and then improve the systematic function effect.
Fig. 4 is the uplink synchronous handling process sketch map that receives based on noncontinuity according to the preferred embodiment of the invention, and as shown in Figure 4, this handling process can may further comprise the steps (step S401-S405):
Step S401, portable terminal accomplish RRC and connect the DRX configuration parameter of setting up and receiving reallocation message;
Step S402, whether base station judges TA length of timer is not more than long DRX cycle, if, execution in step S403, otherwise, execution in step S406;
Step S403, the access number of times of portable terminal when the base station statistical service takes place, wherein, this business comprises upstream data service and downstream data traffic;
For example, the base station can be provided with a counter, is used to calculate the access number of times of portable terminal; When this portable terminal got into DRX cycle, the value of this counter was an initial value, in this DRX cycle; Once access operation at random of the every generation of portable terminal, the base station adds 1 with this counter.For example, for downstream data traffic, whenever the base station when PDCCH Order gets access to the signaling that indicating terminal inserts, this counter adds 1; For upstream data service, because the base station is also at the uplink synchronous state of synchronous maintenance portable terminal, therefore, the base station also can get access to portable terminal owing to need carrying out the information that upstream data service takes place to insert at random, thereby this counter is added 1.
Whether step S404, the access number of times of base station judges portable terminal greater than the number of times thresholding, if, execution in step S405, otherwise, execution in step S406;
Step S405, the TA CMD that the base station increases according to TA length of timer and DRX cycle calculating needs issues constantly, and portable terminal wakes up to receive TA CMD issuing constantly;
Step S406 finishes.
In the preferred implementation of present embodiment, be attached to network at portable terminal, set up through the RRC connection and obtained special-purpose TA length of timer T in the process
TA, and obtained DRX configuration parameter T through reallocation message
LongDrxCycleAfterwards, portable terminal will judge whether satisfy to get into the condition of DRX each Transmission Time Interval (Transmission Time Interval abbreviates TTI as), and the state of active/sleep repeatedly.For example, the TA timer is configured to 500ms, and long DRX cycle is configured to 1280ms, after portable terminal is getting into the duration (On Duration), has received a bag downstream transmission blocks (TB), wherein contains TA CMD, and at this moment, the TA timer is restarted at base station and terminal.Subsequently, the terminal has experienced the duration (On Duration) and non-Active Timer (Inactivity Timer) got into sleep (sleep) state, and in this process, uplink loss taken place afterwards.At this moment; The cycle size of TA timer and DRX at first relatively is not more than under the situation of DRX cycle in the length of TA timer, and the base station just begins to add up the access number of times of portable terminal when professional generation is arranged at every turn; If generation downlink business; Then the base station can obtain through the number of times that PDCCH instruction (Order) indicating mobile terminal inserts, if uplink service takes place, the base station can be through getting access to the access number of times when the uplink synchronous state of synchronous maintenance portable terminal.
When inserting number of times above behind the thresholding, the moment that issues TA CMD is calculated according to TA timer and DRX cycle in the base station, specifically confirms to issue method constantly: calculate the frequency n that issues TA CMD earlier
TA:
Be equivalent in this example
Calculating the moment t that at every turn need issue TACMD again is:
For example; Issuing in this preferred embodiment constantly for { it is standard that skew starts constantly with duration timer for 427ms, 854ms}; Because this is consistent constantly for base station and portable terminal; So issue TACMD with identical standard constantly in identical skew, can align in both sides, the correct reception.
Need to prove, whether issue TA CMD and determine by the base station when inserting number of times above behind the thresholding; Portable terminal is just judged the relation of TA timer and DRX timer; Certainly, the relation of TA timer and DRX timer also can be judged in the base station, if the base station decision issues TA CMD; Then portable terminal need be waken up from sleep state and returned to state of activation, and receives TA CMD in the moment of several activation.
In the correlation technique, under the RRC_CONNNECTED state in the LTE system, if DRX cycle and TA timer unreasonable allocation; Then behind each entering DRX cycle, portable terminal all can be easy to take place uplink loss, like this when carrying out the up-downgoing business; All need first re-accessing network to obtain uplink synchronous again; Like this, just increase service delay virtually, and increased network overhead (interacting message of access procedure).
The said method that the embodiment of the invention provides at portable terminal because after enabling the DRX function during the frequent situation that uplink loss takes place; The number of times that the base station record need insert at random; When surpassing certain thresholding; In the specific moment, let the base station issue the TA order and make base station and terminal carry out the maintenance of TA timer, therefore can be according to the traffic performance at terminal and the configuration characteristics of TA timer and DRX parameter; Adaptively wake the maintenance that the uplink synchronous state is carried out at the terminal up, can effectively reduce the traffic packets time delay, reduce terminal power consumption and then improve systematic function in the specific moment.
The embodiment of the invention also provides a kind of base station, and this base station can be used to the said method of realizing that the embodiment of the invention provides.Fig. 5 is the structural representation according to the base station of the embodiment of the invention, and is as shown in Figure 5, and this base station comprises: first determination module 10, second determination module 20 and sending module 30.Wherein, first determination module 10 is used for after the DRX of portable terminal enables, and confirms in advance to be not more than in advance the duration for the DRX cycle of portable terminal distribution for the TA length of timer of portable terminal setting; Second determination module 20 is connected to first determination module 10, is used for after portable terminal gets into DRX cycle, and the access number of times of confirming portable terminal is greater than the number of times thresholding that is provided with in advance; Sending module 30 is connected to second determination module 20, is used for during DRX cycle, issues up timing controlled order to safeguard the uplink synchronous of portable terminal to portable terminal constantly preset.
In a preferred implementation of the embodiment of the invention, as shown in Figure 6, second determination module 20 can comprise: the first statistics submodule 22, second is added up submodule 24 and is judged submodule 26.Wherein, the first statistics submodule 22 is used for the number of times that Statistical Physics down control channel instruction indicating mobile terminal inserts, and obtains first number that portable terminal inserts because of the need downlink data receiving; The second statistics submodule 24 is used for obtaining portable terminal through the uplink synchronous state at the synchronous maintenance portable terminal and sends second number that upstream data inserts because of need; Judge submodule 26, be connected to the second statistics submodule 24 and the first statistics submodule 22, be used to judge that whether first number and second number sum are greater than the number of times thresholding.
In another preferred implementation of the embodiment of the invention, as shown in Figure 7, sending module 30 can comprise: first calculating sub module 32, second calculating sub module 34 and send submodule 36.Wherein, first calculating sub module 32 is used for the duration T through DRX cycle
LongDrxCycle, TA length of timer T
TA, obtain to issue the frequency n that up timing controlled is ordered
TA:
Second calculating sub module 34 is connected to first calculating sub module 32, is used for need issuing according to following formula calculating the predetermined instant t of up timing controlled order:
sends submodule 36; Be connected to second calculating sub module 34, the predetermined instant t that is used for confirming in second calculating sub module 34 issues up timing controlled order to portable terminal.
The above-mentioned base station that provides through the embodiment of the invention; After portable terminal carries out DRX cycle; The number of times that need insert at random when portable terminal; When surpassing certain thresholding; The sending module 30 of base station issues the order of up timing controlled safeguarding the uplink synchronous of portable terminal in particular moment to portable terminal, thereby has solved portable terminal frequent easily problem that uplink loss takes place after enabling the DRX function, and then has reached and effectively reduce the traffic packets time delay, reduce terminal power consumption and then improve the systematic function effect.
Fig. 8 is the structural representation according to the uplink synchronous system that receives based on noncontinuity of the embodiment of the invention; As shown in Figure 8; This system comprises: portable terminal 4 and base station 5, and wherein, base station 5 can be base station shown in any figure among above-mentioned Fig. 5-7; Portable terminal 4 comprises: first acquisition module 42, and being used to obtain base station 5 is the duration of the DRX cycle of portable terminal 4 distribution for TA length of timer and the base station 5 that portable terminal 4 is provided with; Judge module 44 is connected to first acquisition module 42, is used to judge whether the TA length of timer is not more than the duration of DRX cycle, if then trigger second acquisition module; Second acquisition module 46 is connected to judge module 44, is used for basis setting in advance, obtains the preset moment of the up timing controlled order of base station 5 transmissions in DRX cycle; Executive Module 48 is connected to second acquisition module 46, is used for when predetermined instant arrives; Judge current resting state or the state of activation of being in; If resting state is then waken portable terminal 4 at the fixed time up, to receive the up timing controlled order that base station 5 issues.
From above description, can find out, in embodiments of the present invention; In order to prevent that in DRX cycle because the TA timer can't be safeguarded the uplink loss that causes, base station and terminal are according to configuration parameter; When satisfying certain condition, carry out one or many TA timer in particular moment and safeguard.Owing to wake the terminal up at specific several TTI and only expended small amount of electrical energy; And have professional the generation all to insert at random at every turn; It is much longer that receiver is held open time of state, and therefore, the technical scheme that adopts the embodiment of the invention to provide can more be practiced thrift the terminal energy.In addition, in embodiments of the present invention, need not change TA timer length, only in needs, change TA adjustment mode, obtain synchronous expense and time delay thereby reduced re-accessing network.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a uplink synchronisation method that receives based on noncontinuity is characterized in that, comprising:
After the noncontinuity reception DRX of portable terminal enabled, the duration of the DRX cycle that is said portable terminal distribution was in advance confirmed to be not more than for the time unifying TA length of timer of said portable terminal setting in advance in the base station;
After said portable terminal got into said DRX cycle, said base station confirmed that the access number of times of said portable terminal is greater than the number of times thresholding that is provided with in advance;
During said DRX cycle, said base station issues up timing controlled order to safeguard the uplink synchronous of said portable terminal to said portable terminal constantly preset.
2. method according to claim 1 is characterized in that, said base station confirms that the access number of times of said portable terminal comprises greater than the number of times thresholding that is provided with in advance:
The number of times that the said base station said portable terminal of Statistical Physics down control channel instruction indication inserts obtains first number that said portable terminal inserts because of the need downlink data receiving;
Said base station obtains second number that said portable terminal inserts because of need transmission upstream data through the uplink synchronous state of the said portable terminal of synchronous maintenance;
Said base station as said access number of times, confirms that said access number of times is greater than said number of times thresholding with said first number and said second number sum.
3. method according to claim 1 is characterized in that, said number of times thresholding is provided with according to the packet delay budget parameters of the service quality QoS of the radio bearer of said portable terminal.
4. method according to claim 1 is characterized in that, said base station comprises through issuing up timing controlled order in the preset moment to said portable terminal:
Said base station is through the duration T of said DRX cycle
LongDrxCycle, said TA length of timer T
TA, obtain to issue the frequency n that said up timing controlled is ordered
TA:
Said base station need issue the said predetermined instant t of said up timing controlled order according to following formula calculating:
Said base station issues said up timing controlled order at the said predetermined instant t that confirms to said portable terminal.
5. according to any described method in the claim 1 to 4, it is characterized in that before the DRX of said portable terminal enabled, said method also comprised:
Said portable terminal is when carrying out the radio resource control RRC connection, and the RRC connection of sending from said base station is set up and obtained said base station the message is the TA length of timer that said portable terminal is provided with;
When setting up radio bearer, said portable terminal obtains the duration that said base station is the said DRX cycle of said portable terminal distribution from the RRC reallocation message from said base station.
6. method according to claim 5 is characterized in that, after the DRX of said portable terminal enabled, said method also comprised:
Said portable terminal judges that said TA length of timer is not more than the duration of said DRX cycle;
Said portable terminal is according in advance setting, obtains the said preset moment that in said DRX cycle said base station issues said up timing controlled order;
When said predetermined instant arrived, said portable terminal judgement is current to be in resting state or state of activation, if resting state is then waken up at said predetermined instant, ordered to receive said up timing controlled.
7. a base station is characterized in that, comprising:
First determination module is used for after the noncontinuity reception DRX of portable terminal enables, confirming to be not more than for the time unifying TA length of timer of said portable terminal setting in advance the duration of the DRX cycle that is said portable terminal distribution in advance;
Second determination module, after said portable terminal got into said DRX cycle, the access number of times of confirming said portable terminal was greater than the number of times thresholding that is provided with in advance;
Sending module is used for during said DRX cycle, issues up timing controlled order to safeguard the uplink synchronous of said portable terminal to said portable terminal constantly preset.
8. base station according to claim 7 is characterized in that, said second determination module comprises:
The first statistics submodule is used for the number of times that the said portable terminal of Statistical Physics down control channel instruction indication inserts, and obtains first number that said portable terminal inserts because of the need downlink data receiving;
The second statistics submodule is used for obtaining second number that said portable terminal inserts because of need transmission upstream data through the uplink synchronous state of the said portable terminal of synchronous maintenance;
Judge submodule, be used to judge that whether said first number and said second number sum are greater than said number of times thresholding.
9. base station according to claim 7 is characterized in that, said sending module comprises:
First calculating sub module is used for the duration T through said DRX cycle
LongDrxCycle, said TA length of timer T
TA, obtain to issue the frequency n that said up timing controlled is ordered
TA:
Second calculating sub module is used for need issuing the said predetermined instant t that said up timing controlled is ordered according to following formula calculating:
Send submodule, the said predetermined instant t that is used for confirming in said second calculating sub module issues said up timing controlled order to said portable terminal.
10. a uplink synchronous system that receives based on noncontinuity is characterized in that, comprising: each described base station in portable terminal and the claim 7 to 9, and wherein, said portable terminal comprises:
First acquisition module, being used to obtain TA length of timer and the said base station that said base station is said portable terminal setting is the duration of the DRX cycle of said portable terminal distribution;
Judge module is used to judge whether said TA length of timer is not more than the duration of said DRX cycle, if then trigger second acquisition module;
Said second acquisition module is used for the setting according in advance, obtains the said preset moment that said up timing controlled order is sent in said DRX cycle said base station;
Executive Module is used for when said predetermined instant arrives, and judges currently to be in resting state or state of activation, if resting state is then waken said portable terminal up in the said scheduled time, orders to receive said up timing controlled.
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