CN102065483B - Flow controlling method and device - Google Patents
Flow controlling method and device Download PDFInfo
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- CN102065483B CN102065483B CN2009102233772A CN200910223377A CN102065483B CN 102065483 B CN102065483 B CN 102065483B CN 2009102233772 A CN2009102233772 A CN 2009102233772A CN 200910223377 A CN200910223377 A CN 200910223377A CN 102065483 B CN102065483 B CN 102065483B
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Abstract
The embodiment of the invention discloses a flow controlling method and a flow controlling device, which relates to the field of communication to solve the problems that a relay node register easily overflows because scheduling of a main cell and the relay node are independent in the prior art. The technical scheme of the method comprises the following steps: acquiring caching status information of user equipment; generating caching status information of a relay node; generating comprehensive caching status information according to the caching status information of the user equipment and the caching status information of the relay node; and reporting the comprehensive status information to the main cell. The technical scheme provided by the embodiment of the invention can be applied to a Long Term Evolution-Advanced (LTE-A) system and other systems using the relay node.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of flow control methods, device.
Background technology
In order to realize the functions such as LTE-A system coverage enhancement, capacity increase, group mobility and casual network deployment, introduced via node (Relay Node, RN), make original subscriber equipment (User Equipment, UE) be divided into eNB Uu mouth two parts to the air interface (Un mouth) of RN and RN to UE to the wave point (Uu mouth) of eNB.Community under described RN is called main plot (Denor eNB, DeNB), and RN communicates with DeNB by wireless backhaul links, and the data traffic scheduling of DeNB and RN is separate.When UE is attached to RN and be positioned at the edge of RN covering, RN is very low to the Uu downlink rate of UE.
In realizing process of the present invention, the inventor finds, it is separate due to the data traffic of DeNB and RN, dispatching, be easy to the situation that occurs that RN buffer (buffer) overflows, as, very low to the Uu downlink rate of UE at RN, and DeNB obtains in situation to the downlink quality of RN is fine, can cause the accumulation of downlink data at RN, make the descending buffer of RN overflow.
Summary of the invention
Embodiments of the invention provide a kind of flow control methods, device, to solve in prior art, after introducing via node in the LTE-A system, are easy to the problem that occurs that the via node buffer overflows.
For achieving the above object, embodiments of the invention adopt following technical scheme:
Flow control methods comprises: obtain the subscriber equipment buffer status information; Generate the via node buffer status information; Generate comprehensive buffer status information according to described subscriber equipment buffer status information and via node buffer status information; Described comprehensive buffer status information is reported to main plot.
Flow control methods comprises: receive the comprehensive buffer status information that via node reports; According to described comprehensive buffer status information, described via node is carried out to the scheduling of data traffic.
Volume control device, be applied in via node, comprising:
Acquiring unit, for obtaining the subscriber equipment buffer status information;
The first generation unit, for generating the via node buffer status information;
The second generation unit, the via node buffer status information generated for the subscriber equipment buffer status information obtained according to described acquiring unit and described the first generation unit generates comprehensive buffer status information;
Report unit, for the comprehensive buffer status information that described the second generation unit is generated, report main plot.
Base station comprises:
Receiving element, the described comprehensive buffer status information reported for receiving via node;
Scheduling unit, for according to described comprehensive buffer status information, carry out the scheduling of data traffic to described via node.
The flow control methods that the embodiment of the present invention provides, device, the described comprehensive buffer status information reported according to RN, DeNB can know that RN and UE obtain buffer status, thereby carry out the scheduling of data traffic, this has solved because the scheduling of RN and DeNB data traffic is separate, may occur that RN buffer overflows situation, cause the problem of Un mouth or Uu mouth transmission resource waste used.The technical scheme that the embodiment of the present invention provides can make the scheduling of DeNB and RN be associated, and the comprehensive buffer status information that described DeNB reports according to RN is carried out the scheduling of data traffic to described RN, reduces the probability that RN buffer overflows.
The accompanying drawing explanation
The flow control methods flow chart that Fig. 1 provides for the embodiment of the present invention;
The flow control methods flow chart that Fig. 2 provides for another embodiment of the present invention;
The flow control methods flow chart that Fig. 3 provides for further embodiment of this invention;
The flow control methods flow chart that Fig. 4 provides for yet another embodiment of the invention;
The flow chart of step 308 in the flow control methods that Fig. 5 provides for inventive embodiments shown in Fig. 4;
The volume control device structural representation one that Fig. 6 provides for the embodiment of the present invention;
The volume control device structural representation two that Fig. 7 provides for the embodiment of the present invention;
The volume control device structural representation three that Fig. 8 provides for the embodiment of the present invention;
The structural representation of the second generation unit in the volume control device that Fig. 9 provides for inventive embodiments shown in Fig. 8;
The architecture of base station schematic diagram that Figure 10 provides for the embodiment of the present invention.
Embodiment
In order to solve because the scheduling of RN and DeNB data traffic is separate, may occur that RN buffer overflows situation, cause the problem of Un or Uu interface transmission resource waste used, the embodiment of the present invention provides the methods, devices and systems of a kind of relaying and node Flow Control.
As shown in Figure 1, the flow control methods that the embodiment of the present invention provides comprises:
In described step 101, described UE buffer status information means the buffer status of UE buffer, comprises the up buffer status information of UE and/or UE down buffer storage state information.
In described step 102, described RN buffer status information means the buffer status of RN buffer, comprises that RN is to up buffer status information that should UE and/or to RN down buffer storage state information that should UE.
What deserves to be explained is, the flow control methods provided according to the present embodiment, when not considering the problem of signaling consumption, directly skips steps 103, and UE buffer status information and RN buffer status information are reported respectively to DeNB.
The flow control methods that the embodiment of the present invention provides, the described comprehensive buffer status information reported according to RN, DeNB can know that RN and UE obtain buffer status, thereby carry out the scheduling of data traffic, this has solved because the scheduling of RN and DeNB data traffic is separate, may occur that RN buffer overflows situation, cause the problem of Un mouth or Uu mouth transmission resource waste used.The technical scheme that the embodiment of the present invention provides can make the scheduling of DeNB and RN be associated, and the comprehensive buffer status information that described DeNB reports according to RN is carried out the scheduling of data traffic to described RN, reduces the probability that RN buffer overflows.
As shown in Figure 2, another embodiment of the present invention also provides a kind of flow control methods, comprising:
In described step 202, after main plot receives described comprehensive buffer status information, in conjunction with the service condition of current wireless resource and the parameters such as priority of the UE business of dispatching, the up-downgoing data of RN are dispatched.According to the up-downgoing cache information of UE and RN, therefore, by greatly reducing the data volume that is continuously introduced to UE and the buffer of RN place, reduced the spill-out of data in buffer due to this scheduling.
What deserves to be explained is, when not considering signaling consumption, step 201, can be to receive UE buffer status information and RN buffer status information that RN reports respectively; Step 202 can be described RN to be carried out to the scheduling of data traffic according to UE buffer status information and RN buffer status information.
The flow control methods that the embodiment of the present invention provides, described DeNB is after receiving the comprehensive buffer status information that described RN reports, basis using it as scheduling, solved because the scheduling of RN and DeNB data traffic is separate, be easy to occur that RN buffer overflows situation, cause the problem of Un mouth/Uu mouth transmission resource waste used.The method that the embodiment of the present invention provides receives comprehensive buffer status information by described DeNB, carry out the scheduling of data traffic according to the described comprehensive buffer status information received, make DeNB be associated with the data traffic scheduling of RN, alleviate the data buffer storage pressure of RN buffer, reduced the overflow probability of RN buffer.
In order to make those skilled in the art can more clearly understand the technical scheme that the embodiment of the present invention provides, below by specific embodiment, the flow control methods that the embodiment of the present invention is provided is elaborated.
As shown in Figure 3, the flow control methods that another embodiment of the present invention provides comprises:
In described step 301, described UE buffer status information comprises the up buffer status information of UE and/or UE down buffer storage state information.Described RN periodically obtains the UE buffer status information from described UE, by the UE report cycle set in advance.When timer reaches described UE report cycle, RN obtains the UE buffer status information from UE.For example, described UE report cycle is 5ms in the present embodiment, and RN obtains the UE buffer status information from UE every 5ms.
In the present embodiment, described UE buffer status information is that the percentage that accounts for UE buffer whole volume by data with existing capacity in UE buffer means to obtain.This sentences UE down buffer storage state information is example, and after on distance, once RN obtains described UE down buffer storage state information 5ms, described RN obtains described UE down buffer storage state information again, obtains the UE down buffer storage state information from UE, for example, and 80%.Certainly, described UE buffer status information can be meaned in several ways, does not repeat one by one herein.
In order to reflect more in time the buffer status of described UE, before described step 301, the described flow control methods of the embodiment of the present invention also comprises:
In described step 306, judge whether described UE buffer status is whether the described overflow status of closing on can surpass default threshold values by judging described UE buffer capacity, as, the whole volume of the descending buffer of described UE is that (unit is byte Bytes to 10M, as follows), in the descending buffer of described UE, a default threshold values is 8M, when the data capacity in the descending buffer of described UE exceeds threshold values default in the descending buffer of described UE (being 8M), described UE down buffer storage state is for closing on overflow status, and UE active reporting UE down buffer storage state information is to RN.The default of certain described threshold values can be arranged in several ways, do not repeat one by one herein.
In sum, in the present embodiment, when the described UE down buffer storage state information obtained as described RN is 80%, it may be that described RN periodically obtains the UE down buffer storage state information from described UE, may be also RN also not execution cycle property obtain but UE down buffer storage state has reached or while exceeding described threshold values (8M), the described UE down buffer storage state information of described UE active reporting.
In described step 302, described RN buffer status information comprises the up buffer status information of RN and/or RN down buffer storage state information.Described RN generates this RN buffer status information and comprises when RN obtains the UE buffer status information from UE, RN generates this RN buffer status information and/or RN periodically generates this RN buffer status information, and/or RN initiatively generates the RN buffer status information while closing on overflow status.In the present embodiment, periodically to generate the cycle of this RN buffer status information be configurable amount, for example 5ms to described RN.
What deserves to be explained is, although in the present embodiment, it is identical with the cycle that described RN obtains described UE buffer status information that described RN generates the cycle of RN buffer status information, when concrete the use, the cycle that described RN generates the RN buffer status information set obtain the cycle setting of described UE buffer status information with described RN can be not identical yet, be the configurable amount of system.
In the present embodiment, described RN buffer status information is that the percentage that accounts for RN buffer whole volume by data with existing capacity in RN buffer means to obtain.This sentences RN down buffer storage state information is example, and described RN can generate this RN down buffer storage state information in following three kinds of situations: when RN obtains the UE down buffer storage state information of the descending buffer of described UE, RN generates RN down buffer storage state information, as 40%; After on distance, once RN periodically generates RN down buffer storage state information 5ms, RN generates this RN down buffer storage state information, as 60%; When RN closes on overflow status, RN generates this RN down buffer storage state information, as 90%.Certainly, described RN buffer status information can mean to obtain in several ways, does not repeat one by one herein.
While for described RN, closing on overflow status, RN generates this RN down buffer storage state information, and the flow control methods that the embodiment of the present invention provides also comprises:
In described step 307, described threshold values can be preset in described RN buffer, judge whether described RN buffer status is that the described overflow status of closing on can be preset in the threshold values in described RN buffer by judging whether described RN buffer capacity surpasses, as, the whole volume of the descending buffer of described RN is 10M, in the descending buffer of described RN, a default threshold values is 8M, when the data capacity in the descending buffer of described RN exceeds threshold values default in the descending buffer of described RN (being 8M), described RN down buffer storage state is for closing on overflow status, RN initiatively generates RN down buffer storage state information, as 90%.The default of certain described threshold values can be arranged in several ways, do not repeat one by one herein.
In described step 303, described UE buffer status information and RN buffer status information are reported respectively to DeNB, make DeNB can accurately know the state of UE buffer and RN buffer.Describedly described UE buffer status information and RN buffer status information are reported to the mode that DeNB adopts the radio resource control RRC signaling report described UE buffer status information and RN buffer status information and/or adopt the mode of MAC layer MAC control protocol data cell PDU to report described UE buffer status information and RN buffer status information.Wherein, the mode reliability of described RRC signaling is high, but the time delay of eating dishes without rice or wine is larger; The mode time delay that described MAC controls PDU is little, and signaling consumption is little, but reliability is low.
In the present embodiment, the descending buffer of the UE of take and the descending buffer of RN are example, described UE down buffer storage state information (80%) and RN down buffer storage information (40%) are reported, and described information 80% and 40% mode by described MAC control PDU report DeNB.
In described step 304, the comprehensive buffer status information generated according to described UE buffer status information and RN buffer status information that described DeNB receives described UE buffer status information and the RN buffer status information that described RN reports respectively and/or receives that described RN reports.
In the present embodiment, the descending buffer of the UE of take and the descending buffer of RN are example, and the buffer status information that DeNB reception RN reports is UE down buffer storage state information (80%) and RN down buffer storage information (40%).
In the present embodiment, after main plot receives described UE buffer status information and described RN buffer status information, in conjunction with the service condition of current wireless resource and the parameters such as priority of the UE business of dispatching, the up-downgoing data of RN are dispatched.According to the up-downgoing cache information of UE and RN, therefore, by greatly reducing the data volume that is continuously introduced to UE and the buffer of RN place, reduced the spill-out of data in buffer due to this scheduling.
In the present embodiment, the descending buffer of the UE of take and the descending buffer of RN are example, the described UE down buffer storage state information reported according to described RN: 80% and RN down buffer storage state information: 40%, and described DeNB dispatching downlink data traffic.Described DeNB, when descending scheduling, not only according to described RN down buffer storage state information, is also dispatched according to described UE down buffer storage state information.When described UE down buffer storage state information is 80%, illustrate UE descending buffer buffer memory mass data, although now described RN down buffer storage state information is only 40%, DeNB is when carrying out descending scheduling, can reduce to this UE allocation of downlink resource, reduce from DeNB to RN to data traffic that should UE, thereby alleviate the descending buffer pressure of this UE at RN, avoided because RN is very low to the Uu downlink rate of UE, and DeNB accumulation at RN to the fine downlink data caused of the downlink quality of RN makes the descending buffer of RN overflow.Reduced the probability that data exceed the descending buffer capacity of RN, greatly reduced owing to exceeding the descending buffer capacity of RN and cause data to be abandoned, waste Un port transmission resource, the situation that reduces LTE-A system spectrum utilance occurs.
Same, for fear of overflowing of the up buffer of described RN or overflowing of described RN up-downgoing buffer, can adopt the method for same principle to carry out the flow control of RN upstream data or RN up-downgoing data, do not repeat one by one herein.
Flow control methods provided by the invention, by described UE buffer status information and RN buffer status information are reported respectively to described DeNB, DeNB carries out the scheduling of data traffic according to described UE buffer status information and RN buffer status information, solved because the scheduling of RN and DeNB data traffic is separate, may occur that RN buffer overflows situation, causes the problem of Un mouth transmission resource waste used.Flow control methods provided by the invention, by described UE buffer status information and RN buffer status information are reported respectively to described DeNB, DeNB carries out the scheduling of data traffic according to described UE buffer status information and RN buffer status information, make described RN be associated with the scheduling of DeNB data traffic, thereby reduced the probability that RNbuffer overflows.
In the probability overflowed at reduction RN buffer, the signaling consumption while in order to reduce, reporting described UE buffer status information and RN buffer status information to DeNB.
The flow control methods that another embodiment of the present invention provides, as shown in Figure 4, after described step 302, also comprise step 308, according to described subscriber equipment buffer status information and via node buffer status information, generates comprehensive buffer status information.
In the present embodiment, in described step 303, described UE buffer status information and RN buffer status information are reported to DeNB for described buffer status information is reported to DeNB
Described comprehensive buffer status information can obtain by following function:
DL BS
*＝function(B1，B2)
Wherein, DL BS
*For comprehensive buffer status information; B1 is RN buffer status information value; B2 is UE buffer status information value.
In the present embodiment, B1 obtains according to described RN down buffer storage state information, and when described RN down buffer storage state information >=80%, the descending buffer of RN is expressed as high load condition, otherwise the descending buffer of RN is low load condition; B2 obtains according to described UE down buffer storage state information, and when described UE down buffer storage state information >=80%, the descending buffer of UE is expressed as high load condition, otherwise the descending buffer of UE is low load condition; Be that described B1 and B2 have high capacity and two kinds of buffer status of low load.In the situation that known B1 and B2 obtain DL BS by table 1
*.
Table 1 (0 means low load, and 1 means high capacity):
| B1 | 0 | 0 | 1 | 1 |
| B2 | 0 | 1 | 0 | 1 |
| DLBS * | 0 | 1 | 1 | 1 |
As shown in Table 1, when in described B1 and described B2, at least one is 1, described DL BS
*Be 1, otherwise, described DL BS
*Be 0.Method shown in use table 1 only needs 1 bit information can reflect comprehensive buffer status information.
In order to reflect more accurately the descending and descending buffer status of RN of UE, the present embodiment means on the basis of described UE buffer status information and RN buffer status information in described high capacity and described low load, the descending buffer of RN also introduced when 60%≤RN down buffer storage state information<80% is expressed as middle load condition, when 60%≤UE down buffer storage state information<80%, the descending buffer of UE is middle load condition.Be that described B1 and B2 have high capacity, middle load and three kinds of buffer status of low load.In the situation that known B1 and B2 obtain DL BS by table 2
*.
Table 2 (1 means low load, load in 0 expression, 1 means high capacity)
| B1 | 0 | 0 | 0 | 1 | 1 | 1 | -1 | -1 | -1 |
| B2 | 0 | 1 | -1 | 0 | 1 | -1 | 0 | 1 | -1 |
| DLBS * | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | -1 |
As shown in Table 2, on the basis of table 1, introduced a middle load, now, in the present embodiment ,-1 means low load, load in 0 expression, and 1 means high capacity.When in described B1 and described B2, at least one is 1, described DL BS
*Be 1; When described B1 and described B2 be 0 or described B1 and described B2 in one be 0 one for-1 the time, described DL BS
*Be 0; Otherwise, described DL BS
*For-1.Method shown in use table 2 needs 2 bit informations to reflect comprehensive buffer status information, and the method, than the method shown in table 1, has higher accuracy, when described DeNB receives described DL BS
*, it is more accurate to described RN downlink data dispatching, when reducing signaling consumption, has improved the scheduling precision of DeNB.
What deserves to be explained is, obtaining of described comprehensive buffer status information is not limited in described function DLBS
*=function (B1, B2), and described function DL BS
*The realization of=function (B1, B2) also is not limited in the described two kinds of methods of above-described embodiment, every kind of method is not repeated one by one herein.
In the present embodiment, take the descending buffer of described UE and the descending buffer of described RN is example, described DeNB only need to carry out the scheduling of data traffic according to described comprehensive buffer status information, when comprehensive buffer status information is high capacity, it is high capacity that DeNB receives comprehensive buffer status information, DeNB reduces the distribution of downlink resource when descending scheduling, thereby alleviate the descending buffer pressure of this RN and/or UE, reduced the probability that data exceed RN descending buffer capacity, greatly reducing owing to exceeding the descending buffer capacity of RN causes data to be abandoned, waste Un and/or Uu port transmission resource, the situation that reduces LTE-A system spectrum utilance occurs.Simultaneously, owing to introducing comprehensive buffer status information, when guaranteeing to prevent that RN from overflowing, reduced described UE buffer status information and described RN buffer status information have been reported to the needed signaling consumption of described DeNB.
Same, for fear of overflowing of the up buffer of described RN or overflowing of described RN up-downgoing buffer, and further reduce the expense that reports signaling in process, and can adopt the method for same principle to carry out the Flow Control of RN upstream data or RN up-downgoing data, do not repeat one by one herein.
The flow control methods that the embodiment of the present invention provides, by described comprehensive buffer status information is reported to DeNB, DeNB carries out the scheduling of data traffic according to described comprehensive buffer status information, solved because the scheduling of RN and DeNB data traffic is separate, may occur that RN buffer overflows situation, causes the problem of Un mouth transmission resource waste used.Flow control methods provided by the invention, report described comprehensive buffer status information by RN, reduced described UE buffer status information and RN buffer status information have been reported to the signaling consumption in described DeNB process, and make described RN be associated with the scheduling of DeNB data traffic by described comprehensive buffer status information, thereby reduced the probability that RN buffer overflows.
Further, for when reducing RN buffer overflow probability, reduce the scheduling times of DeNB, the flow control methods that yet another embodiment of the invention provides, as shown in Figure 5, above-mentioned steps 308 comprises:
Herein, the scheduling that t1 is Un and signaling processing delay; The scheduling that t2 is Uu and signaling processing delay.
In the present embodiment, use function:
DL BS
*＝function(b1，b2，t1，t2)
Obtain the described comprehensive buffer status information in described step 303.Wherein, DL BS
*For comprehensive buffer status information; B1 is RN down buffer storage state information value; B2 is UE down buffer storage state information value;
Described function DL BS in the present embodiment
*=function (b1, b2, t1, t2) can be evolved to the function described in above-described embodiment:
DL BS
*＝function(B1，B2)
Obtain.
What deserves to be explained is, in the present embodiment described DL BS
*For comprehensive buffer status information; Described B1 is RN down buffer storage state information value after t1; Described B2 is UE down buffer storage state information value after (t1+t2).
Described function DL BS in the present embodiment
*The BS of function DL described in the implementation method of=function (B1, B2) and above-described embodiment
*The implementation method of=function (B1, B2) is identical, does not repeat one by one herein.
The scheduling of Un and scheduling and the signaling processing delay t2 of signaling processing delay t1 and Uu have been introduced on the basis that is created on above embodiment of described comprehensive buffer status information.Take herein the descending buffer of described UE and the descending buffer of RN is example, after introducing in the present embodiment t1 and t2, according to described RN down buffer storage state information, the prediction after the t1 time delay obtains described B1, and described B2 predicts and obtains after (t1+t2) time delay according to described UE buffer status information.Described B1 at least obtains by historical data, current business speed, the offered load status predication of described b1, RN buffer; Described B2 at least obtains by historical data, current business speed, the offered load status predication of described b2, UEbuffer.
In the present embodiment, the purpose of introducing t1 and t2 is to consider when described DeNB receives described UE that RN reports and the descending buffer state of RN, scheduling and the signaling processing delay of Uu mouth and Un mouth have been passed through, the received buffer state information of DeNB is actually the buffer state information before a certain period, has caused the error of DeNB scheduling.This down buffer storage state of sentencing RN is example, and when the down buffer storage state information of RN is high capacity, RN needs this buffer status information is reported to DeNB.After DeNB is known this information, by such as modes such as reduction downlink data transmission speeds, alleviate the overflow status of the descending buffer of RN.But if, the data of descending transmission speed much larger than RN from the descending reception data of Un mouth of RN, RN oneself can realize the alleviation of overflowing very soon, need to not process scheduling by DeNB.Therefore, RN is before reporting described RN buffer status information, should be by the buffer state after the transmitting-receiving of historical data for example velocity estimation t1, if this overflow status can be resolved, DeNB does not need RN is carried out the scheduling of downlink data, thereby reduced the scheduling times of DeNB, alleviated the workload of DeNB, avoided unnecessary scheduling.
In the present embodiment, in described RN, RN carries out the prediction after (t1+t2) time delay by the UE down buffer storage state information got, thereby obtains information B2; And the described RN down buffer storage state information that RN generates is carried out to the prediction after the t1 time delay, thus obtain B1, carry out the scheduling of data traffic according to described B1, B2, alleviated the workload of DeNB, avoided the unnecessary scheduling of DeNB.
Same, for fear of overflowing of the up buffer of described RN or overflowing of described RN up-downgoing buffer, and further reduced the scheduling times of DeNB, alleviated the workload of DeNB, avoided unnecessary scheduling, can adopt the method for same principle to carry out the Flow Control of RN upstream data or RN up-downgoing data, not repeat one by one herein.
The flow control methods that the embodiment of the present invention provides, in conjunction with the RN buffer status information after prediction t1 time delay and (t1+t2) the UE buffer status information after time delay obtain comprehensive buffer status information, described comprehensive buffer status information is reported to DeNB, DeNB carries out the scheduling of data traffic according to described comprehensive buffer status information, solved because the scheduling of RN and DeNB data traffic is separate, may occur that RN buffer overflows situation, cause the problem of Un mouth transmission resource waste used, and DeNB and RN have been solved, the nonsynchronous problem of the scheduling caused due to time delay between UE.Flow control methods provided by the invention, on the one hand by reporting comprehensive buffer status information, reduced the expense that buffer status information reports signaling, on the other hand by described UE buffer status information and described UE buffer status information after prediction time delay, avoided the unnecessary scheduling times of DeNB, and make described RN be associated with the scheduling of DeNB data traffic by described comprehensive buffer status information, thereby reduced the probability that RN buffer overflows.
With said method accordingly, as shown in Figure 6, the embodiment of the present invention also provides a kind of volume control device, is applied in via node, comprising:
Acquiring unit 401, for obtaining the UE buffer status information, and be temporary in described UE buffer status information in described acquiring unit, and its concrete implementation method can be described referring to step 301 as shown in Figure 3, repeats no more herein.
The first generation unit 402, for generating the RN buffer status information, its concrete implementation method can be described referring to step 302 as shown in Figure 3, repeats no more herein.
In addition, as shown in Figure 7, the volume control device that the embodiment of the present invention provides also comprises:
Receive retransmission unit 407, for receiving the UE buffer status information of UE active reporting, and sending the UE buffer status information of described UE active reporting to described acquiring unit, its concrete implementation method can be described referring to step 306 as shown in Figure 3, repeats no more herein.
Further, as shown in Figure 8, in order to reduce the expense that reports signaling, the volume control device that the embodiment of the present invention provides also comprises:
The second generation unit 404, the via node buffer status information generated for the subscriber equipment buffer status information obtained according to described acquiring unit and described the first generation unit generates comprehensive buffer status information;
In the present embodiment, described the second generation unit, comprise, as shown in Figure 9, receive subelement 4041, the via node buffer status information generated for receiving subscriber equipment buffer status information that described acquiring unit obtains and described the first generation unit: generate subelement, 4042 described subscriber equipment buffer status information and the described via node buffer status information that receive according to described receiving element, generate comprehensive buffer status information, its concrete implementation method can be described referring to step 308 as shown in Figure 4, repeats no more herein.
Further, as shown in Figure 9, in order to reduce the scheduling times of DeNB, the volume control device that the embodiment of the present invention provides, described generation subelement also comprises:
The first predictor unit 4043, for the subscriber equipment buffer status information received according to described reception subelement, prediction is after the scheduling of wave point and signaling processing delay and the scheduling of air interface and the subscriber equipment buffer status information of forecasting after the signaling processing delay, its concrete implementation method can be described referring to step 3081 as shown in Figure 5, repeats no more herein
The second predictor unit 4044, for the via node buffer status information received according to described reception subelement, prediction is through the scheduling of wave point and the via node buffer status information of forecasting after the signaling processing delay, its concrete implementation method can be described referring to step 3082 as shown in Figure 5, repeats no more herein.
Volume control device provided by the invention, can report described DeNB in the lump by described UE buffer status information and RN buffer status information, solved prior art because the scheduling of DeNB and RN is separate, the problem that causes RN buffer to overflow; The device that the embodiment of the present invention provides can report the buffer status information obtained according to RN buffer status information and described UE buffer status information, make described DeNB consider the buffer state of described RN and described UE when carrying out the data traffic scheduling simultaneously, thereby make DeNB be associated with the scheduling of RN, solve in the prior art problem of overflowing due to DeNB and the separate RN buffer caused of RN scheduling, reduced the probability that described RN buffer overflows.
As shown in figure 10, the embodiment of the present invention also provides a kind of base station, comprising:
Receiving element 501, the described comprehensive buffer status information reported for receiving via node, its concrete implementation method can be described referring to step 304 as shown in Figure 3, repeats no more herein.
The base station that the embodiment of the present invention provides, by RN, report described UE buffer status information and RN buffer status information to DeNB, according to described UE buffer status information and RN buffer status information, DeNB carries out the scheduling of data traffic, make DeNB be associated with the scheduling of RN, solved in the prior art because the scheduling of DeNB and RN is separate the problem that causes RN buffer to overflow.The technical scheme that the embodiment of the present invention provides can be dispatched in the situation that is mutually related at DeNB and RN, reduces the probability that RN buffer overflows.
The flow control methods that the embodiment of the present invention provides, device, can be applied in LTE-A system etc. and use in the system of Relay node.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is to come the hardware that instruction is relevant to complete by program, described program can be stored in a computer-readable recording medium, as ROM/RAM, magnetic disc or CD etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (8)
1. a flow control methods, is characterized in that, comprising:
Obtain the subscriber equipment buffer status information;
Generate the via node buffer status information;
Generate comprehensive buffer status information according to described subscriber equipment buffer status information and via node buffer status information;
Described comprehensive buffer status information is reported to main plot;
Wherein, according to described subscriber equipment buffer status information and via node buffer status information, generate comprehensive buffer status information, specifically comprise:
According to described subscriber equipment buffer status information, obtain after the scheduling and signaling processing delay of wave point, the scheduling of air interface and the subscriber equipment buffer status information of forecasting after the signaling processing delay;
According to described via node buffer status information, obtain through the scheduling of wave point and the via node buffer status information of forecasting after the signaling processing delay;
Generate comprehensive buffer status information according to described subscriber equipment buffer status information of forecasting and described via node buffer status information of forecasting.
2. method according to claim 1, is characterized in that, describedly described comprehensive buffer status information is reported to main plot comprises:
Adopt the mode of radio resource control RRC signaling to report described comprehensive buffer status information; Or
Adopt the mode of MAC layer MAC control protocol data cell PDU to report described comprehensive buffer status information.
3. method according to claim 2, is characterized in that, described obtain the subscriber equipment buffer status information before, also comprise:
When closing on overflow status, receive the subscriber equipment buffer status information of subscriber equipment active reporting when the subscriber equipment buffer status.
4. method according to claim 3, is characterized in that, described when the subscriber equipment buffer status when closing on overflow status, the subscriber equipment buffer status information that receives the subscriber equipment active reporting comprises:
By judging whether the subscriber equipment capacity register surpasses default threshold values and judge that whether described subscriber equipment buffer status is for closing on overflow status.
5. method according to claim 1, is characterized in that, described generation via node buffer status information also specifically comprises:
Pre-set threshold value, judge that by described threshold values whether the via node buffer status is for closing on overflow status;
When closing on overflow status, generate the via node cache information when relaying nodal cache state.
6. a volume control device, be applied in via node, it is characterized in that, comprising:
Acquiring unit, for obtaining the subscriber equipment buffer status information;
The first generation unit, for generating the via node buffer status information;
The second generation unit, the via node buffer status information generated for the subscriber equipment buffer status information obtained according to described acquiring unit and described the first generation unit generates comprehensive buffer status information;
Report unit, for the comprehensive buffer status information that described the second generation unit is generated, report main plot;
Wherein, described the second generation unit also specifically comprises:
Receive subelement, the via node buffer status information generated for receiving subscriber equipment buffer status information that described acquiring unit obtains and described the first generation unit;
The first predictor unit, for the subscriber equipment buffer status information received according to described reception subelement, prediction after the scheduling and signaling processing delay of wave point, the scheduling of air interface and the subscriber equipment buffer status information of forecasting after the signaling processing delay;
The second predictor unit, for the via node buffer status information received according to described reception subelement, prediction is through the scheduling of wave point and the via node buffer status information of forecasting after the signaling processing delay;
Generate subelement, for the subscriber equipment buffer status information of forecasting and described the second predictor unit that obtain according to described the first predictor unit prediction, predict the via node buffer status information of forecasting obtained, generate comprehensive buffer status information.
7. device according to claim 6, is characterized in that, also comprises:
Receive retransmission unit, for receiving the subscriber equipment buffer status information of described subscriber equipment active reporting, and this subscriber equipment buffer status information is transmitted to described acquiring unit.
8. device according to claim 6, is characterized in that, also comprises:
Default unit, for pre-set threshold value;
The judgement performance element, judge that by the threshold values in described default unit whether the via node buffer status is for closing on overflow status, when relaying nodal cache state, for closing on overflow status, notifies described the first generation unit to generate the via node buffer status information.
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| CN104702535A (en) * | 2013-12-06 | 2015-06-10 | 中国移动通信集团公司 | Data transmission method, data transmission device, data transmission system and related equipment |
| CN106470493B (en) * | 2015-08-21 | 2020-09-04 | 江苏慧丰信息科技有限公司 | Processing method of relay node, base station and relay node |
| CN105591954A (en) * | 2015-10-28 | 2016-05-18 | 杭州华三通信技术有限公司 | Message control method and device |
| CN111107010B (en) * | 2018-10-25 | 2022-11-25 | 华为技术有限公司 | Transmission control method and device |
| CN112218339B (en) * | 2020-09-30 | 2023-03-14 | 三维通信股份有限公司 | Relay transmission scheduling method, device, storage medium and electronic equipment |
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