CN101483446A - Method and apparatus for dynamically controlling uncontinuous receiving - Google Patents
Method and apparatus for dynamically controlling uncontinuous receiving Download PDFInfo
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- CN101483446A CN101483446A CNA2008100028656A CN200810002865A CN101483446A CN 101483446 A CN101483446 A CN 101483446A CN A2008100028656 A CNA2008100028656 A CN A2008100028656A CN 200810002865 A CN200810002865 A CN 200810002865A CN 101483446 A CN101483446 A CN 101483446A
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Abstract
The present invention discloses a method for dynamically controlling the non-continuous receiving of user facility with a self-adapting mode. The invention comprises the following steps: allocating resource for the schedulable user facility at the network side in scheduling period, and confirming whether the data to be transmitted to each schedulable user facility exists after present scheduling period; indicating a token indicating whether the data to be transmitted to the user facility exists for the user facility according to the confirmation result, and transmitting the set token and scheduling information together to the user facility; and controlling the receiver to enter into a dormancy stage or continue in the activation period by the user facility according to the received token, wherein when the token shows that the data to be transmitted to the user facility exist at the network side, the user facility controls the receiver in the activation period. When the token shows that data to be transmitted to the user facility do not exist, the user facility controls the receiver to enter the dormancy stage.
Description
Technical field
The present invention relates to dynamically control the method and apparatus of discontinuous reception, particularly, relate to by the prediction next dispatching cycle whether to subscriber equipment (UE, User Equipment) sends data, and in down dispatch information, add flag bit and will predict the outcome and inform subscriber equipment, and then the method and apparatus of the on off state of control subscriber equipment receiver.
Background technology
Along with the development of communication to mobility, broadband direction, the power saving of portable terminal is subjected to extensive concern.A lot of communication standardizations are organized in the consideration that has all added when formulating relevant criterion power saving.Especially, the access network of future mobile communication system all will carry out transfer of data based on the IP technology, and the burst characteristic of IP packet and the transmission channel sharing characteristic between the user makes that the data that arrive subscriber equipment are discontinuous, therefore, the energy consumption of how to save subscriber equipment seems more important.
In fact, in existing mobile communications system, considered power saving.For example, gsm system has and is called as " discontinuous reception " (Discontinuous Receive, power saving scheme DRX).Specifically, in gsm system, travelling carriage is in sleep state always, just wakes up once every several " multiframes " (being about as much as 1/8th seconds time period).System can indicate the travelling carriage per second to wake up and check whether incoming call is arranged for 4 times, or approximately per second wakes up to check whether incoming call is arranged for 1 time.In the DRX operation, processor will cut out receiver and make the sleep pattern that oneself enters low-power consumption.Restarting processor by timer internal through after the suitable length of one's sleep.
At present, typical power-saving mechanism comprises the DRX mechanism in the cellular network in the mobile communication system, for example, referring to 3GPP, " 3rd Generation Partnership Project; TechnicalSpecification Group Radio Access Network; RRC ProtocolSpecification for Release 1999; " Technical Specification 3G TS25.331, version 3.5.0, the 3 kinds of power-saving types (Power Saving Class) among the up-to-date WMAN standard 802.16e of 2000 (lists of references 1) and IEEE.
In addition, under the DRX mechanism in 3G UMTS (3G universal mobile telecommunications system), the subscriber equipment receiver have 3 kinds of active states (referring to S.-R.Yang, S.-Y.Yan and H.-N.Hung, " Modeling UMTS with Bursty Packet Data Traffic ", IEEE Trans.MobileComputing., vol.6, no.12, pp.1398-1409, Dec.2007, list of references 2):
1. active period: in active period, subscriber equipment is opened receiver and is received the packet that is transmitted by network side.
2. deexcitation phase: when not having to mail to the data of subscriber equipment in the network side buffer, subscriber equipment is opened a deexcitation timer, enters the deexcitation phase.If there are data to arrive the data buffer of network side correspondence before timer expired, timer stops, and finishes the deexcitation phase, begins next active period; If there is not packet to arrive the data buffer of network side correspondence before the timer expired all the time, then finish the deexcitation phase, subscriber equipment cuts out receiver, begins to enter rest period.
3. rest period: subscriber equipment enters the DRX pattern in rest period.Rest period comprises at least one DRX circulation.In the ending of each DRX circulation, subscriber equipment can be opened the receiver monitoring seek channel.Beep-page message is used in reference to and is shown in the data buffer whether previous DRX circulation has packet arrival network side correspondence.If have, then stop rest period, and subscriber equipment begins to receive packet from network side; If there is not packet to arrive the data buffer of network side correspondence, subscriber equipment then enters next DRX circulation, continues rest period.
Active period and deexcitation phase belong to the power enable mode, and under this pattern, the subscriber equipment receiver is in open mode, and network side can send packet to subscriber equipment.Rest period belongs to power saving mode, and under this pattern, the subscriber equipment receiver is in closed condition, and network side does not send packet to subscriber equipment.
In being in the 3GPP LTE of normalization period, network side is each user device configuration DRX loop parameter.A DRX circulation was made up of active period and rest period.Active period comprises again to be opened duration and deexcitation phase.For example, referring to 3GPP TS 36.300 V8.2.0 EvolvedUniversal Terrestrial Radio Access (E-UTRA) and Evolved UniversalTerrestrial Radio Access Network (E-UTRAN) Overall description Stage 2Release 8.In this case, the subscriber equipment receiver has following 4 kinds of active states:
1. open the duration: subscriber equipment is waken up to enter from rest period and is opened the duration.Opening in the duration, subscriber equipment receives the information of grouping Dedicated Control Channel (PDCCH).Signaling information networking side direction notification of user equipment, relevant with subscriber equipment is arranged, as the control messages about resource allocation such as affirmation, power control, resource allocation and reallocation on the PDCCH channel.If subscriber equipment can successfully be decoded to the information of PDCCH signal, then open the deexcitation timer, enter the deexcitation phase; Otherwise subscriber equipment enters rest period after opening the duration end.
2. deexcitation phase: after subscriber equipment was successfully decoded the PDCCH channel, subscriber equipment was opened the deexcitation timer, enters the deexcitation phase.In the deexcitation phase, subscriber equipment continues to monitor PDCCH and associated control channel.If subscriber equipment before the deexcitation timer expired, successfully to PDCCH and associated control channel decoding, is then opened the deexcitation timer again, enter the deexcitation phase once more; Otherwise subscriber equipment enters rest period by the deexcitation phase behind the deexcitation timer expired.
3. active period: the time (comprise and opening duration and deexcitation phase) that the subscriber equipment receiver is in opening all belongs to active period.
4. rest period: the subscriber equipment receiver is in closed condition in rest period.
In addition, IEEE has introduced the notion of mobile broadband wireless access (Mobile BWA) in up-to-date WMAN standard 802.16e.Travelling carriage (MS, Mobile Station) can move in service process.The introducing mobility has improved the requirement to the MS energy saving.Therefore, 3 kinds of power-saving types have also been increased among the 802.16e.For example, referring to: IEEE 802.16e, Part 16:Air Interfacefor Fixed and Mobile Broadband Wireless Access Systems-Amendmentfor Physical and Medium Access Control Layers for Combined Fixedand Mobile Operation in Licensed Bands, Nov.2004.
Stipulate in the standard that each MS has activation and two kinds of mode of operations of dormancy.Under park mode, MS carries out the dormancy period that consults with base station BS, in these cycles, does not have data interaction between MS and the serving BS broadcasts, MS can close relevant physical equipment, thereby has reached the purpose that reduces the MS power consumption and save the BS air interface resource.When MS was in resting state, BS can cushion the service data unit (SDU) that sends to MS.When each enable mode finishes, carry out sleep messages between MS and the BS and consult with the initialization park mode.After the two confirmed sleep messages, normal transfer of data stopped at the time point of consulting, and enable mode finishes, and MS enters park mode, with certain interval dormancy, woke up then and confirmed whether to need to receive data.This interim wake-up states is called listening intervals.In listening intervals, MS monitors the message of indicating about business in the BS broadcast message.If have data need mail to MS among this message indication BS, MS then enters enable mode; Otherwise MS keeps park mode, begins next sleep interval.In park mode, each professional connection can be according to the related suitable power-saving type of own characteristic.The power-saving type is defined as one group of connection with same requirements.802.16e in have 3 kinds of power-saving types, each type has different parameter sets, suitable business and implementation.First type (type i) is applicable to and does one's best and non real-time variable Rate business.Second type (Type II) is applicable to UGS and real-time variable Rate business.The third type (type-iii) is applicable to that multicast connects and the operation relevant with management.For example, referring to X.Yang, " Energy Saying Mechanism in the IEEE 802.16e WirelessMAN ", IEEE Communication Letters, vol.9, no.7, pp.595-597, July.2005.
In above-mentioned two kinds of power-saving mechanisms, the major issue of existence is that subscriber equipment can't determine in advance whether buffer memory need mail to the data of self to network side, and then determines whether to enter resting state by state of activation.At this problem, LTE has proposed corresponding solution.For example, after subscriber equipment receives a packet, open the deexcitation timer, this moment, subscriber equipment was in the deexcitation phase.If there are data to arrive before timer expired, then subscriber equipment stays open state, and active period continues; Otherwise subscriber equipment enters rest period.For example, referring to R2-075009, " Open issues on DRX ", Samsung, RAN 2 meeting #60, November 5th-9
Th, 2007, Jeju, Korea.In fact, in the previous deexcitation phase that enters resting state, subscriber equipment is in accepting state and does not but receive any data.This situation can be considered as the cost that subscriber equipment is paid in order to confirm " network side does not have buffer memory need mail to the data of self ".This cost promptly is the energy loss of subscriber equipment.In the power-saving mechanism of UMTS and 802.16e system, by active period/enable mode to rest period/park mode excessively also be that mode by the deexcitation timer realizes, have the phenomenon of above-mentioned subscriber equipment energy loss equally.
At present, some solutions to the problems described above have been proposed.For example, on July 26th, 2007, disclosed PCT patent application WO 2007/082934 A1 proposed the method (Method for dynamically adapting the DRXcycle length in a radio communication system) of dynamic self-adapting DRX cycle length in radio communications system.This method dynamically changes DRX according to information such as data volumes.But this can not carry out the DRX configuration flexibly and fast and effeciently by the mode to combine with resource allocation.On October 4th, 2007, disclosed PCT patent application WO 2007/111480 A1 proposed a kind of method and apparatus (Method and apparatus for discontinuousreception of connected terminal in a mobile communication system) that is used for the discontinuous reception of connecting terminal in mobile communication system.This method proposed to adopt packet incidentally the mode of set bit indicate whether the notebook data bag is last packet, and then whether the indication travelling carriage can enter sleep state.Yet there is following defective in this incidentally mode,, because data packet transmission adopts HARQ mechanism, has the bigger hidden danger of propagation delay time that is, can not finish the real-time control to subscriber equipment DRX state.
Summary of the invention
Finish the present invention in view of the above problems, the purpose of this invention is to provide a kind of method and apparatus of dynamically controlling the discontinuous reception of subscriber equipment adaptively.This method and apparatus is by determining whether still have the data that will send to each schedulable subscriber equipment after this dispatching cycle, and it is expressed as flag bit joins in this cycle schedule information, thereby utilize schedule information to assist ground dynamically to adjust the time of (stopping or prolongation) subscriber equipment receiver open mode, with the energy-saving effect of realizing ideal, and guarantee quality of service QoS.
According to an aspect of the present invention, provide a kind of method of dynamically controlling the discontinuous reception of subscriber equipment adaptively, comprise step:
Schedulable user equipment allocation resource in network side is dispatching cycle, and determine after this dispatching cycle, whether to still have the data that will send to each schedulable subscriber equipment;
According to definite result the sign that indicates whether to still have the data that will send to described subscriber equipment to subscriber equipment is set, and set sign is sent to subscriber equipment with schedule information; With
Described subscriber equipment is according to the sign that receives, and receiver control enters rest period or continues to be in active period.
According to another aspect of the present invention, provide a kind of device of dynamically controlling the discontinuous reception of subscriber equipment adaptively, comprising:
Be arranged in the base station,
The service queue unit is used for the packet that will send to subscriber equipment is ranked;
Scheduling unit is used at least according to the quality requirement of business, and channel condition information is dispatched the business that will send to subscriber equipment, and produces schedule information;
Discontinuous reception predicting unit, be used for according to the information prediction of schedule information and the data buffer relevant data bag resource allocation of next dispatching cycle, and the sign that indicates whether to still have the data that will send to described subscriber equipment to subscriber equipment be set according to predicting the outcome;
Transmitter unit, be used to launch the schedule information of generation and setting sign and
Be arranged in the subscriber equipment,
Receiving element is used to receive control information and business datum and described sign from network side;
Control information and data decode and decision unit are used for the control information that receives and business datum and described sign are decoded; With
Discontinuous reception control unit is used for controlling the state that receiving element enters rest period or continues to be in active period according to described sign.
According to the present invention, in down dispatch information, added flag bit, in next dispatching cycle, whether network side has the data that will send to subscriber equipment to this flag bit, and by the schedule information of this dispatching cycle this flag bit is indicated to subscriber equipment to the subscriber equipment indication.
The present invention is by considering professional service quality (QoS) demand and the state of system data buffer, dynamically adjust DRX mechanism, thereby can adjust the state of subscriber equipment receiver easily, make subscriber equipment can from this mode, obtain energy-conservation gain efficiently.
Description of drawings
By below in conjunction with description of drawings the preferred embodiments of the present invention, will make above-mentioned and other purpose of the present invention, feature and advantage clearer, wherein:
Fig. 1 shows according to the schematic diagram of the embodiment of the invention at the DRX control device at place, network side base station;
Fig. 2 shows according to the schematic diagram of the embodiment of the invention at the DRX of user equipment side control device;
Fig. 3 shows the operational flowchart of dynamically adjusting DRX according to the scheduler of the embodiment of the invention adaptively;
Fig. 4 shows the flow chart that utilizes flag bit control DRX state according to the embodiment of the invention;
Fig. 5 is the operational flowchart that shows according to the DRX prediction module of the embodiment of the invention; With
Fig. 6 is the schematic diagram that shows the opening and closing state that utilizes flag bit control subscriber equipment.
Embodiment
With reference to the accompanying drawings embodiments of the invention are described in detail, having omitted in the description process is unnecessary details and function for the present invention, obscures to prevent that the understanding of the present invention from causing.
Fig. 1 shows according to the present invention (the embodiment of the DRX control device of for example, eNB) locating in the network side base station.As shown in Figure 1, the DRX control device at the place, base station comprises service queue module 11, scheduler module 12, discontinuous reception (DRX) prediction module 13 and transmitter module 14.
For the DRX of dynamic modulation subscriber equipment adaptively, the DRX control device at the place, base station disposes DRX prediction module 12.When the downlink grouped that will send to subscriber equipment arrived network side, packet at first entered in the business module formation 11 of the DRX control device that is arranged in the base station and ranks.When scheduling constantly arrived, scheduler module 12 was according to the qos requirement of business, channel condition information, and information such as formation are dispatched the business that will send to the user.After scheduling was finished, on the one hand, scheduler module 12 sent to transmitter module 14 packet delivery that is dispatched to.On the other hand, scheduler module 12 is notified to DRX prediction module 13 with the information of packet in scheduling result and the data buffer.
Fig. 2 shows according to the present invention at an embodiment of the DRX of user equipment side control device.As shown in Figure 2, the DRX control device of user equipment side comprises receiver module 21, control information and data decode and judging module 22, and DRX control module 23.
Control information such as schedule information and business datum that receiver module 21 in the subscriber equipment receives from network side.Then, receiver module 21 passes to control information and data decode and judging module 22 with control information and business datum.22 pairs of control informations that receive of control information and data decode and judging module and business datum are decoded, and information that decoding is obtained, relevant with DRX control is notified to DRX control module 23.DRX control module 23 is come the state of receiver control module 21 according to this information, thereby realizes dynamically adjusting adaptively the controlled function of discontinuous reception.
Dynamically adjust in the process of DRX in self adaptation, the DRX length of the cycle of each configuration is fixed.Each DRX length of the cycle comprises an active period and a rest period.Initial active period length is fixed.When the flag bit in the schedule information was " 1 ", indication can be with the dynamic prolongation of the active period of subscriber equipment a dispatching cycle (1 or several Transmission Time Interval (TansmissionTime Interval, TTI)).When the flag bit in the schedule information was " 0 ", indication can make the active period of subscriber equipment stop, and enters rest period.
The subscriber equipment that is in active period is after receiving the schedule information that carries " 0 " flag bit, directly enter rest period, and be not required to be affirmation " whether network side is cached with the data that need send to this subscriber equipment self " and unlatching deexcitation timer by active period.Therefore, subscriber equipment determines it is to prolong active period by the distinguishing mark bit, still directly enters rest period by active period, thereby has avoided by entering the power consumption that the deexcitation phase causes.Rest period lasts till this DRX loop ends.After this DRX loop ends, enter the active period of next DRX circulation.
Dynamically adjust in the method for DRX in self adaptation of the present invention, indicate subscriber equipment how DRX dynamically to be adjusted by the flag bit in the schedule information.The state information of the subscriber equipment receiver that is provided in conjunction with the DRX control module by scheduler module is provided with flag bit, and traffic carrying capacity and resource allocation policy in the buffer of flag bit and network side base station (eNB) are relevant.
Fig. 3 shows the operational flowchart that scheduler module is dynamically adjusted DRX adaptively.After beginning dispatching cycle, at step S301, the information that scheduler module 12 provides in conjunction with the DRX control module, but in this dispatching cycle the user equipment allocation resource that is in the dispatched users set.At this, but dispatched users be meant this dispatching cycle inner receiver be in the subscriber equipment of open mode.Schedulable all subscriber equipmenies are formed adjustable degree user set.After resource allocation finishes, but scheduler module 12 judges whether still having after this dispatching cycle in the buffer of metadata cache at eNB that will send to each scheduling user's set (for example user i) at step S302.If the judged result in step S302 is for negating, promptly there are not to send to the data of subscriber equipment i (UE), the scheduler module flag bit is set to " 0 ", does not have to send to the data of subscriber equipment i in next dispatching cycle with notifying user equipment i network side.If judge that at step S302 network side also is cached with the data that will be dealt into subscriber equipment i, flow process then forwards step S303 to.At step S303, the DRX prediction module is predicted in the scheduling result of next dispatching cycle subscriber equipment i.After this, at step S304, whether the DRX prediction module judges in next dispatching cycle scheduling user's set i.Show scheduling user's set i in next dispatching cycle if predict the outcome, flow process forwards step S305 to, and the flag bit that will send to subscriber equipment i is set to " 1 ", will send to the data of subscriber equipment i in addition to subscriber equipment i indication network side.Next, at step S307, scheduler module 12 writes flag bit in the schedule information of this dispatching cycle, and sends to subscriber equipment i by transmitter module 14.On the other hand, when the DRX prediction module when step S304 judges in next dispatching cycle not scheduling user's set i, flow process forwards step S306 to, the flag bit that will send to subscriber equipment i is set to " 0 ", there not to be to send to the data of subscriber equipment i to subscriber equipment i indication network side.After this, flow process forwards step S307 equally to, and scheduler module 12 writes flag bit " 0 " in the schedule information of this dispatching cycle, and sends to subscriber equipment i by transmitter module 14 by correlated channels.So far finish this dispatching cycle.
After subscriber equipment receives flag bit in the schedule information, dynamically control the subscriber equipment receiver state according to the value of this flag bit.Fig. 4 shows the flow chart that subscriber equipment utilizes flag bit control DRX state.As shown in Figure 4, at step S401, can suppose that user's initial condition is rest period.After this, at step S402, judge whether the rest period of subscriber equipment finishes.If the rest period of subscriber equipment does not finish, flow process is then returned step S401, and subscriber equipment continues to be in resting state.If judge that at step S402 subscriber equipment is through with rest period, subscriber equipment then enters active period at step S403 by rest period, or continues to be in active period.After subscriber equipment enters active period, judge at step S404 whether subscriber equipment receives schedule information.If subscriber equipment does not receive relevant schedule information, subscriber equipment then returns step S401 after the set time, enter rest period.If judge that at step S404 subscriber equipment receives relevant schedule information, flow process then proceeds to step S405.At step S405,22 pairs of schedule informations that receive of control information in the subscriber equipment and data decode and judging module are decoded, and with acquisition control information and business datum, and whether judgement is " 1 " with the flag bit that schedule information sends.If at step S405 judgement symbol bit is " 1 ", flow process then turns back to step S403, make subscriber equipment continue to be in active period by DRX control module 23, that is, prolonged the active period of subscriber equipment for the indication of " 1 " according to flag bit in next dispatching cycle.In the LTE system, can realize the prolongation of active period by opening the deexcitation timer.If at step S405 judgement symbol bit is " 0 ", flow process then turns back to step S401, make subscriber equipment enter rest period by DRX control module 23 in next dispatching cycle, promptly, according to flag bit is the active period of the indication termination subscriber equipment of " 0 ", in the LTE system, make the user enter rest period immediately thereby can not open the deexcitation timer.This process circulation is carried out, can make the subscriber equipment receiver predict thus according to schedule information and user's business information, by flag bit is set in schedule information, control the state dormancy and the state of activation of subscriber equipment receiver, reduce power consumption of user equipment effectively.
According to embodiments of the invention, the resource allocation conditions that DRX prediction module 13 is predicted next dispatching cycle by the information of cached data packet the information obtained from scheduler module and the data buffer, and the flag bit that sends to respective user equipment is set in view of the above, then flag bit is added in the schedule information.After subscriber equipment receives the schedule information that carries flag bit, according to flag bit receiver control state.
Below with reference to the operation embodiment of Fig. 5 description according to the DRX prediction module of the embodiment of the invention.Fig. 5 shows the operating process of DRX prediction module.In the DRX forecasting process that the DRX prediction module is carried out, at first, at step S501, the DRX information that DRX prediction module 13 provides in conjunction with service queue module 11, but the S set of renewal scheduling user's set
1Middle user's information and sub-band information.But the state information that scheduler module 12 provides according to DRX prediction module 13 is formed the dispatched users S set with the user that this dispatching cycle, inner receiver was in opening
1But, upgrade the dispatched users S set
1Middle user's information and sub-band information.In the present embodiment, down link can adopt multiple access technique based on OFDMA to the user device transmissions schedule information.Be noted that to the invention is not restricted to this, also can adopt other multiple access technique.After this, at step S502, scheduler module 12 and DRX prediction module 13 all adopt Proportional Fair algorithm pair set S
1The user dispatch, the schedule information of generation can be expressed as V
1Can suppose by User Priority and calculate, produce user's set that can obtain resource in this dispatching cycle and be S
2In other words, the user that scheduling is obtained forms S set
2Relevant Proportional Fair algorithm can reference: Kaneko M, Popovski P, the article that is entitled as " Proportional fairness in multicarrier system:upper bound andapproximation algorithm " that Dahl J delivers is (referring to IEEE CommunicationLetter, 2006,10 (6): 462-464).The function of scheduler module 12 is resource allocation process of finishing in this dispatching cycle.Compare with scheduler module 1, DRX prediction module 13 adopts identical dispatching algorithm and in conjunction with the state information of network side data buffer, the resource allocation result of user in next dispatching cycle is predicted.
Specifically, DRX prediction module 13 can be carried out the prediction of scheduling result next time for the user of S2 to user's set, and forecasting mechanism is to predict at the service buffer device information and the system resource allocation strategy of network side according to the user.
In view of the above, at step S503, judge S set
2In the length of data queue L of user i map network side
iWhether greater than 0.If L
i=0, show that then network side does not have to send to the business datum of subscriber equipment i in next dispatching cycle.In this case, flow process forwards step S507 to, and the flag bit of correspondence is set to " 0 ".If at step S503 judgment data queue length L
i＞0, flow process then proceeds to step S504, and this user is placed S set
3In (S
3={ j|j ∈ S
2∩ L
j0}).In the present embodiment, can upgrade S set according to following formula (1)
3Middle user's Mean Speed, and according to following formula (2) and (3) prediction next dispatching cycle of interior S set
3In all users' dispatching priority.
Wherein
Be that user i is at the Mean Speed of t before the moment, R
i(t) be the Mean Speed that user i upgrades after t dispatches constantly, r
I, n(t) be that the subband n that distributes to user i goes up the data rate of supporting.When the group carrier wave n is distributed to user i, c
I, n=1, otherwise, c
I, n=0, t
cStatistical window for user rate.P
I, n(t+1) be the priority of user i on subband n in the next dispatching cycle of prediction.By pair set S
3In the prediction and the comparison of all User Priorities, judge at step S505 whether user i belongs to user's set that prediction is scheduled in next dispatching cycle.If the judged result in step S505 is for affirming, that is, user i belongs to the user's set that is scheduled in next dispatching cycle, and flow process then proceeds to step S506, and flag bit is established set.After this, at step S508, with flag bit that is provided with and the schedule information V that produces in this dispatching cycle
1In conjunction with generating schedule information V
2
If the judged result in step S505 is for negative, that is, user i does not belong to the dispatched users set of next dispatching cycle, and flow process then forwards step S507 to, and flag bit is set to " 0 ".After this, flow process proceeds to step S508 equally, will be set to the flag bit of " 0 " and the schedule information V that produces in this dispatching cycle
1In conjunction with generating schedule information V
2So far finish this dispatching cycle.
As an alternative, DRX prediction module 13 can adopt another kind of mode of operation, and wherein dispatching algorithm and corresponding DRX prediction algorithm all adopt poll (Round Robin) algorithm.
Specifically, but the state information that scheduler module 12 provides according to DRX prediction module 13 is formed the dispatched users S set with the user that this dispatching cycle, inner receiver was in opening
1, according to polling algorithm pair set S
1The user dispatch the schedule information V of generation
1After can supposing that the order of the user being dispatched by polling algorithm calculates, produce user's set that can obtain resource in this dispatching cycle and be S
213 pairs of user's set of DRX prediction module are S
2The user carry out the prediction of scheduling result next time, as an example, can predict at the service buffer device information and the system resource allocation strategy of network side according to the user.
At first, need to judge S set
2In the length of data queue L of user i map network side
iIf, L
i=0, then the flag bit of this subscriber equipment correspondence is set to " 0 "; If L
i0, then this user is placed S set
3In (S
3={ j|j ∈ S
2∩ L
j0}).According to the poll strategy to user's S set
3Middle user's scheduling sequence carries out sequence arrangement and scheduling.Suppose the available resources according to system, the maximum dispatched users number that can support is N
m, the current number of users of system is N
cIf, N
c≤ N
m, then can estimate next scheduling constantly, each user can be dispatched to, and therefore the flag bit corresponding with the user is set to " 1 "; If N
cN
m, then the strategy according to poll distributes corresponding resource to the user successively, equals N until the number of users that is assigned to resource
m, the flag bit of the unallocated then user's correspondence to resource is set to " 0 ".After this, the flag bit that is provided with is placed the schedule information V of generation
1In, finish all resource allocation information V in this dispatching cycle
2, so far finish this dispatching cycle.
Fig. 6 shows to utilize flag bit to control the schematic diagram of the opening and closing state of subscriber equipment.Scheduler module 12 at first obtains the relevant information of the DRX state of relevant user i, and obtains whether to have the information of the data that will send to subscriber equipment by buffer.Then, when the receiver of user i is in open mode, the data of user i are dispatched and flag bit is set, again flag bit is inserted schedule information and issue user i together according to the information of forecasting of DRX prediction module.As shown in Figure 6, user i is according to the opening and closing state of the dynamic receiver control state of flag bit that receives from eNB (base station).In Fig. 6, represent fixedly active period by the blank box that solid line constitutes, represent the deexcitation phase by the blank box that dotted line constitutes, shaded bar is represented downlink data, arrow is represented schedule information.As can be seen from Figure 6, in first circulates with the 3rd DRX,, show that network side will send to the data of subscriber equipment k in addition because the flag bit of subscriber equipment k is set to " 1 " from the schedule information that eNB receives.Therefore, subscriber equipment k prolongs the active period of its receiver, enters the deexcitation phase, rather than directly enters rest period.And in the DRX circulation of its excess-three, the flag bit that sends with schedule information all is set to " 0 ", shows that network side does not have to send to the data of subscriber equipment k.Therefore, subscriber equipment k only contains a fixing active period.
Compare with the control mode that adopts deexcitation timer (inactive timer), the present invention can control the subscriber equipment receiver state, thereby make subscriber equipment more effectively save energy consumption under the prerequisite that guarantees QoS of survice more accurately.
So far invention has been described in conjunction with the preferred embodiments.Should be appreciated that those skilled in the art can carry out various other change, replacement and interpolations under the situation that does not break away from the spirit and scope of the present invention.Therefore, scope of the present invention is not limited to above-mentioned specific embodiment, and should be limited by claims.
Claims (26)
1. method of dynamically controlling the discontinuous reception of subscriber equipment adaptively comprises step:
Schedulable user equipment allocation resource in network side is dispatching cycle, and determine after this dispatching cycle, whether to still have the data that will send to each schedulable subscriber equipment;
According to definite result the sign that indicates whether to still have the data that will send to described subscriber equipment to subscriber equipment is set, and set sign is sent to subscriber equipment with schedule information;
Described subscriber equipment is according to the sign that receives, and receiver control enters rest period or continues to be in active period.
2. method according to claim 1 comprises that further described subscriber equipment receiver control continues to be in the step of active period when described sign indication network side still has the data that will send to described subscriber equipment.
3. method according to claim 2, thus comprise that further described subscriber equipment receiver control continues to be in the step of active period by unlatching deexcitation timer.
4. method according to claim 1 comprises that further described subscriber equipment receiver control enters the step of rest period when described sign indication network side does not have to send to the data of described subscriber equipment.
5. method according to claim 4 comprises further that described subscriber equipment receiver control is not opened the deexcitation timer and the step that directly enters rest period.
6. method according to claim 1 further comprises when network side still has the data that will send to described subscriber equipment, and the step of described being masked as " 1 " is set.
7. method according to claim 1 further comprises when network side does not have to send to the data of described subscriber equipment, and the step of described being masked as " 0 " is set.
8. whether method according to claim 1 wherein determines to still have after this dispatching cycle the step of the data that will send to schedulable subscriber equipment to comprise that whether the number of judging the packet in the pairing buffer of subscriber equipment is greater than zero step.
9. method according to claim 8, further comprise when the number of the packet in the pairing buffer of respective user equipment greater than zero the time, determine the step whether described subscriber equipment was scheduled in next dispatching cycle.
10. method according to claim 9, further comprise when described subscriber equipment when can be scheduled next dispatching cycle, the step that is masked as " 1 " is set.
11. method according to claim 9, further comprise when described subscriber equipment when can not be scheduled next dispatching cycle, the step that is masked as " 0 " is set.
12. method according to claim 1 comprises that further network side according to the discontinuous reception information that provides, upgrades the step of schedulable subscriber equipment.
13. the state information of network side according to the discontinuous reception that provides further is provided method according to claim 12, the subscriber equipment that this dispatching cycle, inner receiver was in opening formed adjustable degree user's step.
14. method according to claim 12 wherein adopts the Proportional Fair algorithm that schedulable subscriber equipment is dispatched.
15. method according to claim 12 further comprises the state information according to the network side data in buffer, the step that the resource allocation result of subscriber equipment in next dispatching cycle predicted.
16. method according to claim 12 wherein adopts polling algorithm that the order of schedulable subscriber equipment is calculated, and produces the subscriber equipment that can obtain resource in this dispatching cycle, and described subscriber equipment is carried out the prediction of scheduling result next time.
17., comprise that further the method for data that will send to subscriber equipment according to the buffer status after this dispatching cycle and scheduling predicts the step of whether dispatching described subscriber equipment in next dispatching cycle according to claim 15 and 16 described methods.
18. method according to claim 1, wherein the length of the cycle of discontinuous reception is fixed, the length of the cycle of each discontinuous reception comprises an active period and a rest period, and when being masked as " 1 ", indication dynamically prolongs a dispatching cycle with the active period of subscriber equipment.
19. method according to claim 18 further comprises when being masked as " 1 ", indicates described subscriber equipment to open the step of deexcitation timer.
20. method according to claim 1, wherein the length of the cycle of discontinuous reception is fixed, the length of the cycle of each discontinuous reception comprises an active period and a rest period, and when being masked as " 0 ", indication subscriber equipment receiver enters rest period immediately.
21. method according to claim 20 further comprises when being masked as " 0 ", indicates described subscriber equipment to close the step of deexcitation timer.
22. a device of dynamically controlling the discontinuous reception of subscriber equipment adaptively comprises:
Be arranged in the base station,
The service queue unit is used for the packet that will send to subscriber equipment is ranked;
Scheduling unit is used at least according to the quality of service requirement of business, and channel condition information is dispatched the business that will send to subscriber equipment, and produces schedule information;
Discontinuous reception predicting unit, be used for according to the information prediction of schedule information and the data buffer relevant data bag resource allocation of next dispatching cycle, and the sign that indicates whether to still have the data that will send to described subscriber equipment to subscriber equipment be set according to predicting the outcome;
Transmitter unit, be used to launch the schedule information of generation and setting sign and
Be arranged in the subscriber equipment,
Receiving element is used to receive control information and business datum and described sign from network side;
Control information and data decode and decision unit are used for the control information that receives and business datum and described sign are decoded; With
Discontinuous reception control unit is used for controlling the state that receiving element enters rest period or continues to be in active period according to described sign.
23. device according to claim 22, wherein said scheduling unit distributes the resource in this dispatching cycle.
24. device according to claim 22, wherein said scheduling unit is notified to described discontinuous reception predicting unit with scheduling result and information.
25. device according to claim 22, wherein when network side still had the data that will send to described subscriber equipment, described discontinuous reception predicting unit was provided with described being masked as " 1 ", continued to be in active period to indicate described subscriber equipment receiver control.
26. device according to claim 22, wherein when network side did not have to send to the data of described subscriber equipment, described discontinuous reception predicting unit was provided with described being masked as " 0 ", entered rest period to indicate described subscriber equipment receiver control.
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| CN200810002865.6A CN101483446B (en) | 2008-01-08 | 2008-01-08 | Method and apparatus for dynamically controlling uncontinuous receiving |
| JP2009002385A JP5396087B2 (en) | 2008-01-08 | 2009-01-08 | Method and apparatus for dynamically controlling intermittent reception |
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| CN200810002865.6A CN101483446B (en) | 2008-01-08 | 2008-01-08 | Method and apparatus for dynamically controlling uncontinuous receiving |
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Also Published As
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| CN101483446B (en) | 2014-07-30 |
| JP5396087B2 (en) | 2014-01-22 |
| JP2009165131A (en) | 2009-07-23 |
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