CN101562889B - Method and base station equipment for dispatching downlink communication resources - Google Patents
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Abstract
The invention discloses a method and base station equipment for dispatching downlink communication resources. The base station equipment comprises a DRX period configuring module, a notice module and a resource allocation module. The method which is executed by the base station equipment comprises the following concrete steps: using the DRX period configuring module to configure DRX periods of DRXusers and configure starting points of the DRX periods of the DRX users on downlink subframes in balance; using the notice module to notice the DRX period and the starting point of the DRX period of each DRX user to a corresponding DRX user to carry out DRX monitoring; and using the resource allocation module to dispatch corresponding downlink communication resources in balance according to the allocated starting point of the DRX period of each DRX user. The method and the base station equipment for dispatching downlink communication resources can be used for improving the balance of the downlink dispatching of the base station and the balance of the utilization ratio of resources in the DRX working mode, and can be used for reducing the defect that part of users are dispatched in delay, but part of downlink resources are not utilized fully.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of method and base station equipment of dispatching downlink communication resources.
Background technology
At present, in the mobile communication system based on shared channel, for example adopt in the LTE mobile communication system of 3GPP Long Term Evolution (LTE) project technology, the transmission of up-downgoing data generally is responsible for control by base station dispatcher.When scheduler is determined certain user of scheduling, will on which kind of communication resource, send or receive data by control channel informing user terminal (UE).The UE monitoring control channel when comprising the schedule information of this UE in detecting control channel, is finished the transmission (up) of data or is received (descending) according to the indication of this schedule information.Under state of activation, because when the uncertain base station of UE dispatch it, therefore a kind of common mode of operation is, the continuous monitoring control channel of UE is all resolved each subframe that comprises its descending scheduling control channel, is scheduled judging whether.This working method is bigger in the UE data volume, can obtain higher efficient under the situation about may frequently be dispatched.Yet professional for some, the arrival frequency of data is lower, and the number of times that causes UE to be scheduled is also less, if the still continuous monitoring control channel of UE can increase its power consumption undoubtedly.In order to solve the power consumption problem, the LTE system has proposed the technical scheme of discontinuous reception mode (DRX, Discontinuous Reception), and in suc scheme, UE periodically monitors control channel, thereby reaches the purpose of economize on electricity.
Simply introduce the course of work of DRX pattern and the collocation method of relevant parameter below.
Fig. 1 is the time-domain diagram of UE monitoring control channel under the DRX pattern.Referring to Fig. 1, the DRX pattern allows UE periodically to monitor Physical Downlink Control Channel (PDCCH) and periodically dormancy.Be introduced into an of short duration continuous accepting state during each DRX cycle (DRX cycle) beginning, be called Onduration, its duration is determined by On duration timer.The duration of On duration timer decision is: from continuous several descending sub frames that DRX cycle starting point (DRX Start Offset) begins to count, UE need monitor PDCCH during this period, to check the resource allocation that whether has at this UE.If UE receives descending scheduling and downlink data during On duration, to start other timers and carry out follow-up scheduling process, if but UE does not receive descending scheduling and downlink data during On duration, will enter dormancy (sleep) state, downlink data receiving again when the On of next DRX cycle duration timer starts.
In DRX cycle, UE has an opportunity to receive down dispatch information for the first time and downlink data is during On duration, if DRX cycle starting point unreasonable allocation, the DRX cycle starting point of a plurality of UE overlaps, then a plurality of UE enter On duration state simultaneously, and the time that On duration continues is limited, and the base station has little time to dispatch all UE probably, thereby causes the data delay of part UE.At other constantly, because all UE are in resting state, the base station can not the dispatching downlink data, thereby cause the waste of downlink resource.
Fig. 2 is for being provided with the unbalanced a kind of schematic diagram of the unreasonable resource utilization that causes owing to the DRX cycle starting point.As shown in Figure 2, the downlink resource that will dispatch in the 200 expression base station buffer memorys (eNB Buffer) of top, the described box indicating base station that indicates different digital 1,2,3,4...... is each downlink resource piece of UE scheduling, for example each DRX cycle will be dispatched four downlink resource pieces herein, first DRX cycle scheduling resource piece 1,2,3,4,5,6,7,8, the three DRX cycle scheduling resource pieces 9,10,11,12 of second DRX cycle scheduling resource piece.The time-frequency domain distribution coordinate diagram of mid portion 210 expression Resource Block, wherein abscissa t represents time domain, ordinate N
RBThe expression frequency domain.Lower part 220 expression four user terminals (UE1, UE2, UE3 and UE4) DRX monitor situation, among this Fig. 2, the DRX cycle starting point of described four user terminals is identical, and the On duration of each UE has only a Transmission Time Interval (TTI, Transmission Time Interval), and the number of users that the base station allows at most to dispatch simultaneously in TTI is conditional (for example a TTI dispatches three users at most simultaneously herein), so the data of certain customers can only be postponed till next DRX cycle and just can be scheduled.As shown in Figure 2, in first DRX cycle, UE1, UE2, UE3 and UE4 start monitoring simultaneously, but because the scheduling of base station restriction, have only the Resource Block 1,2,3 of UE1, UE2 and UE3 to be scheduled, 4 needs of the Resource Block of UE4 are deferred to be dispatched after next DRX cycle begins; In like manner, the base station needs first scheduling resource piece 4 in second DRX cycle, and then scheduling resource piece 5 and 6, dispatches after Resource Block 7 and 8 are deferred to the 3rd DRX cycle.Thus, DRX cycle starting point unreasonable allocation can cause unbalanced and resource utilization unbalanced of base station down scheduling, causes the data delay of part UE, and the waste of downlink resource.
In present LTE Frequency Division Duplexing (FDD) (FDD) communication system, in order to address this problem, the base station is when the DRX cycle of configuration UE, with the subframe be according to each DRX user's DRX cycle starting point in each subframe homogenizing, make each DRX user's DRX cycle starting point be evenly distributed on the subframe of time domain.After homogenizing DRX cycle starting point, utilize following formula to determine a certain DRX user's DRX cycle start position:
[(SFN*10)+subframe?number]modulo(current?DRX)＝DRX?StartOffset
In the above-mentioned formula, SFN is the residing System Frame Number of DRX cycle starting point, and every 10ms (i.e. system-frame) has a numbering; Subframe number is the residing subframe numbers of DRX cycle starting point; Current DRX represents that the base station is the DRX cycle length of UE configuration; DRX Start Offset is that the base station is the DRX cycle start position of UE configuration, is notified to UE by the base station, and span is [0, DRX cycle-1], and unit is a subframe.
By above-mentioned formula,, can realize DRX cycle starting point even distribution on all subframes in DRX cycle of different user on subframe as long as the DRX cycle starting point value of different user evenly distributes.
Fig. 3 is for evenly being provided with a kind of schematic diagram of realizing the resource utilization equilibrium on subframe owing to the DRX cycle starting point.As shown in Figure 3, because the DRX cycle starting point of UE1, UE2, UE3 and UE4 evenly distributes on subframe, so these four UE can start monitoring successively, the base station can be dispatched each user's Resource Block successively, thereby avoided a number of users restriction that TTI is interior, reduce the waste of data delay and resource, improved the harmony of descending scheduling and the harmony of resource utilization.
But, in LTE TDD system, above-mentioned is still perfect inadequately according to the descending scheduling that scheme the was realized harmony and the resource utilization harmony of each DRX user's DRX cycle starting point of uniform distribution with subframe, can not directly reach the purpose of scheduling equilibrium and resource utilization equilibrium in many cases.This be because, LTE TDD is a kind of tdd systems, its frame structure as shown in Figure 4, a system-frame comprises 10 subframes, a system-frame comprises two fields simultaneously, and the frame structure of these two fields is identical, and each field comprises 5 subframes, for example comprise subframe Subframe #0, Subframe # 2, Subframe # 3 and Subframe # 4 in first field, and a special frames.Subframe in the described system-frame is divided into sub-frame of uplink and descending sub frame, lays respectively at different time locations, according to different up/descending (UL/DL) subframe transfer points can have multiple up/descending sub frame configuration.
Fig. 5 is a kind of concrete ascending-descending subframes allocation plan.Referring to Fig. 5, this sub-frame configuration is the 5ms up-downgoing field change-over period, UL: DL=2: 2, comprise descending sub frame Subframe #0, special subframe, sub-frame of uplink Subframe # 2, sub-frame of uplink Subframe # 3 and descending sub frame Subframe # 4 in first field successively.If still according to above-mentioned existing method, the DRX cycle starting point of different user is evenly distributed on each subframe, then can not realize the balance dispatching downlink communication resources.For example work as UE1,2,3,4,5 DRX cycle starting point is evenly to arrive between 5 from the special subframe to the subframe, promptly be special subframe successively, sub-frame of uplink Subframe # 2, sub-frame of uplink Subframe # 3 and descending sub frame Subframe # 4, if On duration regularly is 1 descending sub frame, a descending sub frame can be dispatched 3 users, then UE 1,2,3 just can listen to descending sub frame and downlink data receiving up to descending sub frame Subframe# 4 after the DRX cycle starting point, UE4 also just can listen to descending sub frame and downlink data receiving at descending sub frame Subframe # 4, but because descending sub frame is to the restriction of dispatched users, in described descending sub frame Subframe # 4 can only dispatched users 1～4 three, the another one user data must be deferred to next DRX cycle scheduling, UE5 can listen to descending sub frame Subframe # 5 immediately after the DRX cycle starting point, therefore only need dispatch the downlink data of UE5 at descending sub frame Subframe # 5.
In sum, for the TDD system, above-mentioned prior art only guarantees that the DRX cycle starting point value of different user evenly distributes on subframe, obviously still can not realize the harmony of base station down scheduling and the harmony of resource utilization very effectively, therefore still may cause certain customers to be delayed scheduling, and the defective that the part downlink resource is not fully utilized.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of method of dispatching downlink communication resources, with the harmony of raising base station down scheduling and the harmony of resource utilization.
Another technical problem to be solved by this invention is to provide a kind of base station equipment, with the harmony of raising base station down scheduling and the harmony of resource utilization.
In order to realize the foregoing invention purpose, main technical schemes of the present invention is:
A kind of method of dispatching downlink communication resources comprises:
A, the indirect receiving mode DRX user's of configuration DRX cycle, and DRX user's DRX cycle starting point is disposed in equilibrium on descending sub frame;
B, each DRX user's DRX cycle and DRX cycle starting point thereof are notified to corresponding DRX user carry out DRX and monitor;
C, be downlink communication resources according to the balance dispatching correspondence with each DRX user's of being distributed DRX cycle starting point.
Preferably, steps A specifically comprises:
A1, configuration DRX user's DRX cycle is that unit divides a plurality of intervals with the system-frame in DRX cycle, and the DRX user equilibrium is distributed to each interval;
A2, described each interval in according to the distribution situation division subinterval of descending sub frame, comprise a descending sub frame in each subinterval;
A3, will distribute to the further equilibrium of each interval DRX user and distribute to each subinterval in this interval, in each subinterval, the DRX cycle starting point will be set for the DRX user who distributes to current subinterval.
Preferably, the system-frame unit between steps A 1 described dividing regions is a frame or field.
Preferably, steps A 1 described configuration DRX user's DRX cycle is specially: for all DRX users dispose identical DRX cycle; Perhaps, identical if not all DRX users' DRX cycle, then in configuration during DRX cycle, need satisfy for the DRX cycle of every kind of length: the number of users that disposes this DRX cycle is identical or suitable with the ratio of the system frame number that this DRX cycle comprises.
Preferably, steps A 3 is described will distribute to the further equilibrium of each interval DRX user and distribute to that each subinterval is specially in this interval: for the residing subinterval of each descending sub frame, distribute identical or a considerable amount of DRX users.
Preferably, steps A 3 is described will be distributed to the further equilibrium of each interval DRX user and distribute to that each subinterval is specially in this interval: for the residing subinterval of each descending sub frame, the DRX number of users of distributing to this subinterval is identical or suitable with the ratio of the control channel number of this descending sub frame.
Preferably, steps A 3 is described will be distributed to the further equilibrium of each interval DRX user and distribute to that each subinterval is specially in this interval: for the residing subinterval of each descending sub frame, configuration gives the DRX number of users in this subinterval identical or suitable with the ratio of the free system resources number of this descending sub frame.
Preferably, further comprise in the steps A, write down the DRX number of users that is distributed in each subinterval, add fashionable as new DRX user, this DRX user is distributed to the minimum subinterval of DRX number of users, in this subinterval, dispose the DRX cycle starting point for this DRX user.
Preferably, steps A described on descending sub frame balanced configuration DRX user's DRX cycle starting point specifically comprise:
A1, dynamically the cycle is added up the load condition of each descending sub frame;
A2, according to the load condition and the load balancing principle of each descending sub frame of being added up, balanced configuration DRX user's DRX cycle starting point on each descending sub frame.
Preferably, among the described step a2:
If have new DRX user to add, then select the DRX cycle starting point of the descending sub frame of next measurement period internal loading minimum as this DRX user.
Preferably, among the described step a2:
If the load condition of certain descending sub frame surpasses default thresholding, then reduce with the DRX number of users of this descending sub frame as the DRX cycle starting point, the DRX user's that reduces DRX cycle starting point is set on the minimum descending sub frame of load.
Preferably, described measurement period is that DRX cycle allows the maximum that disposes.
Preferably, the load condition of each descending sub frame of described statistics can be following any or the combination of planting arbitrarily:
The first-class number of users to be scheduled of each descending sub frame;
The ratio of the control channel number of the first-class number of users to be scheduled of each descending sub frame and this descending sub frame;
The ratio of the free system resources number of the first-class number of users to be scheduled of each descending sub frame and this descending sub frame;
First-class all the user's data amount summations to be scheduled of each descending sub frame.
Preferably, the free system resources number of described descending sub frame is the sub-carrier number or the Physical Resource Block number of this descending sub frame.
Preferably, described DRX cycle start position identifies by following formula with System Frame Number and subframe numbers: DRX cycle start position=[(System Frame Number * 10)+subframe numbers] delivery (DRX cycle length).
A kind of base station equipment comprises:
The DRX cycle configuration module is used to dispose DRX user's DRX cycle, and DRX user's DRX cycle starting point is disposed in equilibrium on descending sub frame;
Notification module is used for that each DRX user's DRX cycle and DRX cycle starting point thereof are notified to corresponding DRX user and carries out DRX and monitor;
Resource distribution module is used for DRX cycle starting point with each DRX user of being distributed and is the downlink communication resources according to the balance dispatching correspondence.
Preferably, described DRX cycle configuration module specifically comprises:
The first interval division module is used to dispose DRX user's DRX cycle, is that unit divides a plurality of intervals with the system-frame in DRX cycle, and the DRX user equilibrium is distributed to each interval;
The second interval division module is used for dividing the subinterval according to the distribution situation of descending sub frame in described each interval, comprises a descending sub frame in each subinterval;
The first balanced distribution module is used for distributing to each subinterval in this interval with distributing to the further equilibrium of each interval DRX user, for the DRX user who distributes to current subinterval the DRX cycle starting point is set in each subinterval.
Preferably, described DRX cycle configuration module specifically comprises:
Statistical module, the load condition of each descending sub frame of statistics in measurement period;
The second balanced distribution module is used for load condition and load balancing principle according to each descending sub frame of being added up, balanced configuration DRX user's DRX cycle starting point on each descending sub frame.
Because the distribution of descending sub frame on time domain is unbalanced, cause the method for the simple balanced subframe of prior art can not guarantee the harmony of base station down scheduling and the harmony of resource utilization.With respect to prior art, the present invention is to be foundation with the descending sub frame, balanced configuration DRX user's DRX cycle starting point on descending sub frame, thereby can be so that the communication resource quantity of dispatching on each descending sub frame is identical or suitable, guarantee that each DRX user obtains fair relatively dispatcher meeting, improved the harmony of the base station down scheduling under the DRX mode of operation and the harmony of resource utilization, alleviated certain customers and be delayed scheduling, and the defective that the part downlink resource is not fully utilized.
The present invention can also be further according to each descending sub frame inner control channel number, load factors such as available resources quantity and UE data volume, realize more accurate load balancing control, guarantee that UE obtains fair dispatcher meeting, avoid occurring the situation of being forced to postpone as far as possible.
Description of drawings
Fig. 1 is the time-domain diagram of user terminal monitoring control channel under the DRX pattern;
Fig. 2 is for being provided with the unbalanced a kind of schematic diagram of the unreasonable resource utilization that causes owing to the DRX cycle starting point;
Fig. 3 is for evenly being provided with a kind of schematic diagram of realizing the resource utilization equilibrium on subframe owing to the DRX cycle starting point;
Fig. 4 is the frame structure schematic diagram of LTE TDD system;
Fig. 5 is a kind of concrete ascending-descending subframes allocation plan;
Fig. 6 is the method flow diagram of base station equipment dispatching downlink communication resources of the present invention;
Fig. 7 is the composition schematic diagram of base station equipment of the present invention;
Fig. 8 a is the composition schematic diagram of a kind of embodiment of described DRX cycle configuration module;
Fig. 8 b is the composition schematic diagram of the another kind of execution mode of described DRX cycle configuration module.
Embodiment
Below by specific embodiments and the drawings the present invention is described in further details.
Fig. 6 is the method flow diagram of base station equipment dispatching downlink communication resources of the present invention.Referring to Fig. 6, this method mainly comprises:
Key of the present invention be step 601 described on descending sub frame balanced configuration DRX user's DRX cycle starting point, concrete mode has multiple, below introduces specific embodiment respectively.
Embodiment one, determine the DRX cycle start position according to information such as descending sub frame number and the configurations of time slot transfer point.
For the system-frame of TDD, generally speaking, the descending sub frame number that is comprised in the different fields (perhaps different frame) is all identical with the up-downgoing transfer point, therefore in the present embodiment can with system-frame and descending sub frame be with reference between dividing regions to realize the load balancing of downlink resource.In the present embodiment, described step 601 specifically comprises:
Step 611, configuration DRX user's DRX cycle is that unit divides a plurality of intervals with the system-frame in DRX cycle, and the DRX user equilibrium is distributed to each interval.
, suppose that DRX cycle comprises N system-frame herein, each system-frame comprises 10 subframes.The DRX cycle starting point is divided into N continuous interval, each interval comprises 10 integer values, be followed successively by [0,9], [10,19] ... [(N-1) * 10, N*10-1], when determining each user's DRX cycle starting point, need all DRX user equilibrium are distributed to described each interval, that is to say that to guarantee that the DRX cycle starting point is positioned at above-mentioned each interval number of users suitable, guarantee that promptly the difference that the DRX cycle starting point is positioned at the number of users in any two intervals is not more than 1.In addition, because the descending sub frame number that comprised in the different fields in the TDD system is all identical with the up-downgoing transfer point, so the system-frame unit between dividing regions described in the step 611 also can be half system-frame, i.e. a field.
Step 612, since the scheduling controlling channel only in descending sub frame, exist, described each interval in according to the distribution situation division subinterval of descending sub frame, comprise a descending sub frame in each subinterval.
Step 613, will distribute to the further equilibrium of each interval DRX user and distribute to each subinterval in this interval, in each subinterval, the DRX cycle starting point will be set for the DRX user who distributes to current subinterval.
Herein, suppose and comprise M descending sub frame in the system-frame, its subframe numbering is followed successively by C1 from small to large, C2, ... CM, in determining this system-frame during user's DRX cycle starting point, in order to reach the scheduling load balancing of different descending sub frames, each user's DRX cycle starting point value should guarantee to be positioned at user's DRX cycle starting point and be positioned at interval [0, C1], [C1+1, C2], ... the number of users of [CM-1+1, CM] is suitable, says exactly to guarantee that the difference that the DRX cycle starting point is positioned at the number of users in above-mentioned any two intervals is not more than 1.
In step 613, can also further write down the DRX number of users that is distributed in each subinterval, add fashionablely as new DRX user, this DRX user is distributed to the minimum subinterval of DRX number of users, in this subinterval, dispose the DRX cycle starting point for this DRX user.
After homogenizing DRX cycle starting point, utilize following formula to determine and identify a certain DRX user's DRX cycle start position:
[(SFN*10)+subframe?number]modulo(current?DRX)＝DRX?StartOffset
In the above-mentioned formula, SFN is the residing System Frame Number of DRX cycle starting point, and every 10ms (i.e. system-frame) has a numbering; Subframe number is the residing subframe numbers of DRX cycle starting point; Current DRX represents that the base station is the DRX cycle length of UE configuration; DRX Start Offset is that the base station is the DRX cycle start position of UE configuration, is notified to UE by the base station, and span is [0, DRX cycle-1], and unit is a subframe.UE imports above-mentioned formula with real-time System Frame Number and subframe numbers and calculates, if the DRX Start Offset that the DRX Start Offset that obtains and base station are notified is identical, illustrates that then the DRX cycle starting point arrives, and begins to monitor.When base station side execution in step 603, also determine by above-mentioned formula whether current real-time System Frame Number and subframe numbers are certain DRX user's DRX cycle starting point, and judge whether to dispatch this DRX user's downlink communication resources in view of the above, thereby the harmony of the base station down scheduling under the DRX mode of operation and the harmony of resource utilization have been guaranteed.
In real system, different DRX users' DRX cycle value might be different, and this DRX cycle value is stood good in order to guarantee dispatching method of the present invention by the base station equipment configuration, the present invention can adopt following two kinds of measures when system configuration DRX user's DRX cycle:
Measure one: for all DRX users dispose identical DRX cycle.
Measure two: the DRX cycle if not all DRX users is all identical, the normalization number of users that then guarantees various DRX cycle values equates or quite, normalized method is: the DRX cycle for every kind of length need satisfy: the number of users that disposes this DRX cycle is identical or suitable with the ratio of the system frame number that this DRX cycle comprises.
Embodiment two, determine the start position of DRX cycle according to the dynamic load situation of descending sub frame.Concrete manner of execution may further comprise the steps:
The load condition of step a1, each descending sub frame of dynamic statistics.Specifically can be that measurement period is set, the load condition of each descending sub frame of statistics in each section measurement period, described measurement period is that DRX cycle allows the maximum that disposes.The load condition of the descending sub frame of statistics can be the first-class number of users to be scheduled of each descending sub frame.
Step a2, according to the load condition and the load balancing principle of each descending sub frame of being added up, balanced configuration DRX user's DRX cycle starting point on each descending sub frame.If there is new DRX user to add, then select the DRX cycle starting point of the descending sub frame of next measurement period internal loading minimum herein, as this DRX user; If the load condition of certain descending sub frame surpasses default thresholding, then reduce with the DRX number of users of this descending sub frame as the DRX cycle starting point, the DRX user's that reduces DRX cycle starting point is set on the minimum descending sub frame of load.
In above-mentioned two embodiment, only considered the number of descending sub frame, generally, the resource that control channel number in the different descending sub frames and can be used for transmits data is not quite similar, in order to realize dispatching load balancing control more accurately, the present invention can also do further optimization to the method for above-mentioned two embodiment, and the measure of optimization can comprise following three kinds of modes, when being optimized, can consider one of them mode, or a plurality of mode is considered simultaneously.
Mode one: consider the down channel number that each descending sub frame is supported.
Optimal way for embodiment one is: when step 613 is dispatched load balancing in realizing system-frame, should guarantee the normalization number of users difference minimum that each is interval.Distribute to the method for normalizing in each subinterval in this interval and be specially distributing to the further equilibrium of each interval DRX user: for the residing subinterval of each descending sub frame, the DRX number of users of distributing to this subinterval is identical or suitable with the ratio of the control channel number of this descending sub frame.
Optimal way for embodiment two is: the load condition of each descending sub frame that step a1 added up can be a normalized value, promptly for certain descending sub frame, the load condition of its statistics is the control channel number of the first-class number of users to be scheduled of this descending sub frame/this descending sub frame.
Mode two: consider each descending sub frame available system number of resources.In the LTE system, the system resource number of system user transmission data can use sub-carrier number or Physical Resource Block (PBR, Physical Resource Block) to characterize.
Optimal way for embodiment one is: when step 613 is dispatched load balancing in realizing system-frame, should guarantee the normalization number of users difference minimum that each is interval.Distribute to the method for normalizing in each subinterval in this interval and be specially distributing to the further equilibrium of each interval DRX user: for the residing subinterval of each descending sub frame, configuration gives the DRX number of users in this subinterval identical or suitable with the ratio of the free system resources number (being specifically as follows sub-carrier number or PBR) of this descending sub frame.
Optimal way for embodiment two is: the load condition of each descending sub frame that step a1 added up can be a normalized value, promptly for certain descending sub frame, the load condition of its statistics is: the ratio of the free system resources number of the first-class number of users to be scheduled of this descending sub frame and this descending sub frame (being specifically as follows sub-carrier number or PBR).
Mode three: consider subscriber traffic and qos requirement.Mainly be that embodiment two is optimized, promptly the load condition of each descending sub frame of being added up of step a1 is: first-class all the user's data amount summations to be scheduled of each descending sub frame.In this manner, when the user who newly enters the DRX mode of operation need determine the DRX cycle starting point, select the starting point of the descending sub frame of above-mentioned wait dispatched users logarithmic data amount summation minimum in the next measurement period as this user's DRX cycle.
Fig. 7 is the composition schematic diagram of base station equipment of the present invention.This base station equipment has the repertoire of existing base station equipment, for special character of the present invention briefly clearly is described, omitted among Fig. 7 and the identical module of existing base station equipment function, just to being illustrated with existing base station other part of phase region, referring to Fig. 7, this base station equipment also need comprise the following module of carrying out the method for the invention except the functional module that comprises existing base station:
DRX cycle configuration module 701 is used to dispose DRX user's DRX cycle, and DRX user's DRX cycle starting point is disposed in equilibrium on descending sub frame.
Described DRX cycle configuration module 701 specifically has two kinds of execution modes, Fig. 8 a is the composition schematic diagram of wherein a kind of embodiment, the described DRX cycle configuration module of this Fig. 8 a is mainly carried out among the embodiment one of described method and the embodiment three optimized Measures to embodiment one, referring to Fig. 8 a, described DRX cycle configuration module specifically can comprise:
The first interval division module 811 is used to dispose DRX user's DRX cycle, is that unit divides a plurality of intervals with the system-frame in DRX cycle, and the DRX user equilibrium is distributed to each interval.
The second interval division module 812 is used for dividing the subinterval according to the distribution situation of descending sub frame in described each interval, comprises a descending sub frame in each subinterval.
The first balanced distribution module 813 is used for distributing to each subinterval in this interval with distributing to the further equilibrium of each interval DRX user, for the DRX user who distributes to current subinterval the DRX cycle starting point is set in each subinterval.
Fig. 8 b is the composition schematic diagram of the another kind of execution mode of described DRX cycle configuration module 701, the described DRX cycle configuration module of this Fig. 8 b is mainly carried out among the embodiment two of described method and the embodiment three optimized Measures to embodiment two, referring to Fig. 8 b, described DRX cycle configuration module specifically can comprise:
The second balanced distribution module 822 is used for load condition and load balancing principle according to each descending sub frame of being added up, balanced configuration DRX user's DRX cycle starting point on each descending sub frame.If have new DRX user to add, then select the DRX cycle starting point of the descending sub frame of next measurement period internal loading minimum as this DRX user; If the load condition of certain descending sub frame surpasses default thresholding, then reduce with the DRX number of users of this descending sub frame as the DRX cycle starting point, the DRX user's that reduces DRX cycle starting point is set on the minimum descending sub frame of load.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (14)
1. the method for a dispatching downlink communication resources is characterized in that, comprising:
A, configuration discontinuous reception mode DRX user's DRX cycle, and DRX user's DRX cycle starting point is disposed in equilibrium on descending sub frame;
B, each DRX user's DRX cycle and DRX cycle starting point thereof are notified to corresponding DRX user carry out DRX and monitor;
C, be downlink communication resources according to the balance dispatching correspondence with each DRX user's of being distributed DRX cycle starting point;
Steps A specifically comprises: A1, configuration DRX user's DRX cycle is that unit divides a plurality of intervals with the system-frame in DRX cycle, and the DRX user equilibrium is distributed to each interval; A2, described each interval in according to the distribution situation division subinterval of descending sub frame, comprise a descending sub frame in each subinterval; A3, will distribute to the further equilibrium of each interval DRX user and distribute to each subinterval in this interval, in each subinterval for the DRX user who distributes to current subinterval is provided with the DRX cycle starting point,
Perhaps steps A specifically comprises: a1, dynamically the cycle is added up the load condition of each descending sub frame; A2, according to the load condition and the load balancing principle of each descending sub frame of being added up, balanced configuration DRX user's DRX cycle starting point on each descending sub frame.
2. method according to claim 1 is characterized in that, the system-frame unit between steps A 1 described dividing regions is a frame or field.
3. method according to claim 1 is characterized in that, steps A 1 described configuration DRX user's DRX cycle is specially:
For all DRX users dispose identical DRX cycle;
Perhaps, identical if not all DRX users' DRX cycle, then in configuration during DRX cycle, need satisfy for the DRX cycle of every kind of length: the number of users that disposes this DRX cycle is identical or suitable with the ratio of the system frame number that this DRX cycle comprises.
4. method according to claim 1, it is characterized in that, steps A 3 is described will be distributed to the further equilibrium of each interval DRX user and distribute to that each subinterval is specially in this interval: for the residing subinterval of each descending sub frame, distribute identical or a considerable amount of DRX users.
5. method according to claim 1, it is characterized in that, steps A 3 is described will be distributed to the further equilibrium of each interval DRX user and distribute to that each subinterval is specially in this interval: for the residing subinterval of each descending sub frame, the DRX number of users of distributing to this subinterval is identical or suitable with the ratio of the control channel number of this descending sub frame.
6. method according to claim 1, it is characterized in that, steps A 3 is described will be distributed to the further equilibrium of each interval DRX user and distribute to that each subinterval is specially in this interval: for the residing subinterval of each descending sub frame, configuration gives the DRX number of users in this subinterval identical or suitable with the ratio of the free system resources number of this descending sub frame.
7. method according to claim 1, it is characterized in that, further comprise in the steps A, write down the DRX number of users that is distributed in each subinterval, add fashionable as new DRX user, this DRX user is distributed to the minimum subinterval of DRX number of users, in this subinterval, dispose the DRX cycle starting point for this DRX user.
8. method according to claim 1 is characterized in that, among the described step a2:
If have new DRX user to add, then select the DRX cycle starting point of the descending sub frame of next measurement period internal loading minimum as this DRX user.
9. method according to claim 1 is characterized in that, among the described step a2:
If the load condition of certain descending sub frame surpasses default thresholding, then reduce with the DRX number of users of this descending sub frame as the DRX cycle starting point, the DRX user's that reduces DRX cycle starting point is set on the minimum descending sub frame of load.
10. method according to claim 1 is characterized in that, described measurement period is that DRX cycle allows the maximum that disposes.
11. method according to claim 1 is characterized in that, the load condition of each descending sub frame of described statistics can be following any or the combination of planting arbitrarily:
The first-class number of users to be scheduled of each descending sub frame;
The ratio of the control channel number of the first-class number of users to be scheduled of each descending sub frame and this descending sub frame;
The ratio of the free system resources number of the first-class number of users to be scheduled of each descending sub frame and this descending sub frame;
First-class all the user's data amount summations to be scheduled of each descending sub frame.
12., it is characterized in that the free system resources number of described descending sub frame is the sub-carrier number or the Physical Resource Block number of this descending sub frame according to claim 6 or 11 described methods.
13., it is characterized in that described DRX cycle start position identifies by following formula with System Frame Number and subframe numbers according to each described method of claim 1 to 11:
DRX cycle start position=[(System Frame Number * 10)+subframe numbers] delivery (DRX cycle length).
14. a base station equipment is characterized in that, comprising:
The DRX cycle configuration module is used to dispose DRX user's DRX cycle, and DRX user's DRX cycle starting point is disposed in equilibrium on descending sub frame;
Notification module is used for that each DRX user's DRX cycle and DRX cycle starting point thereof are notified to corresponding DRX user and carries out DRX and monitor;
Resource distribution module is used for DRX cycle starting point with each DRX user of being distributed and is the downlink communication resources according to the balance dispatching correspondence;
Described DRX cycle configuration module specifically comprises: the first interval division module, be used to dispose DRX user's DRX cycle, and in DRX cycle, be that unit divides a plurality of intervals with the system-frame, the DRX user equilibrium is distributed to each interval; The second interval division module is used for dividing the subinterval according to the distribution situation of descending sub frame in described each interval, comprises a descending sub frame in each subinterval; The first balanced distribution module is used for distributing to each subinterval in this interval with distributing to the further equilibrium of each interval DRX user, in each subinterval for the DRX user who distributes to current subinterval is provided with the DRX cycle starting point,
Perhaps described DRX cycle configuration module specifically comprises: statistical module, the load condition of each descending sub frame of statistics in measurement period; The second balanced distribution module is used for load condition and load balancing principle according to each descending sub frame of being added up, balanced configuration DRX user's DRX cycle starting point on each descending sub frame.
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| CN102811192B (en) * | 2011-05-31 | 2015-07-15 | 普天信息技术研究院有限公司 | Method for controlling signaling in orthogonal frequency division multiplexing technology |
| US9693259B2 (en) | 2011-09-08 | 2017-06-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Method in a base station, a base station, computer programs and computer readable means |
| US9622100B2 (en) * | 2013-03-05 | 2017-04-11 | Sharp Kabushiki Kaisha | Base station apparatus, terminal apparatus, integrated circuit, and radio communication method |
| CN104995974B (en) * | 2013-06-21 | 2019-06-11 | 华为技术有限公司 | A kind of method of counting and device based on based on DRX timer under tdd mode |
| CN103457711B (en) * | 2013-07-05 | 2017-04-19 | 大唐移动通信设备有限公司 | Method and device for determining the number of OFDM symbols occupied by control channel |
| CN110999413B (en) * | 2017-08-11 | 2023-06-23 | 5G Ip控股有限责任公司 | Apparatus and method for discontinuous reception in a new radio |
| CN112533281A (en) * | 2019-09-19 | 2021-03-19 | 中兴通讯股份有限公司 | DRX communication synchronization and start control method, device, equipment and storage medium |
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