CN102065483A - Flow controlling method and device - Google Patents
Flow controlling method and device Download PDFInfo
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- CN102065483A CN102065483A CN2009102233772A CN200910223377A CN102065483A CN 102065483 A CN102065483 A CN 102065483A CN 2009102233772 A CN2009102233772 A CN 2009102233772A CN 200910223377 A CN200910223377 A CN 200910223377A CN 102065483 A CN102065483 A CN 102065483A
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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 that the LTE-A system covers functions such as enhancing, capacity increase, group's mobility and casual network deployment, introduced via node (Relay Node, RN), make that (User Equipment UE) has been 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 to original subscriber equipment.Sub-district under the described RN be called the main plot (Denor eNB, DeNB), RN communicates with DeNB by wireless backhaul links, the data traffic scheduling of DeNB and RN is separate.When UE was attached to RN and be positioned at the edge of RN covering, RN was very low to the Uu downlink rate of UE.
In realizing process of the present invention, the inventor finds, because the scheduling of the data traffic of DeNB and RN is separate, be easy to occur the situation that RN buffer (buffer) overflows, as, very low at RN to the Uu downlink rate of UE, and DeNB gets under the situation to the downlink quality of RN is fine, can cause the accumulation of downlink data, make the descending buffer of RN overflow at RN.
Summary of the invention
Embodiments of the invention provide a kind of flow control methods, device, to solve in the prior art, behind the introducing via node, are easy to occur the problem that the via node buffer overflows in the LTE-A system.
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 the 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 the scheduling of data traffic.
Volume control device is applied in the via node, comprising:
Acquiring unit is used to obtain the subscriber equipment buffer status information;
First generation unit is used to generate the via node buffer status information;
Second generation unit is used for the via node buffer status information that the subscriber equipment buffer status information obtained according to described acquiring unit and described first generation unit generate and generates comprehensive buffer status information;
Report the unit, be used for the comprehensive buffer status information that described second generation unit generates is reported the main plot.
The base station comprises:
Receiving element is used to receive the described comprehensive buffer status information that via node reports;
Scheduling unit is used for described via node being carried out the scheduling of data traffic according to described comprehensive buffer status information.
The flow control methods that the embodiment of the invention provides, device, the described comprehensive buffer status information that reports according to RN, DeNB can know that RN and UE get buffer status, thereby carry out the scheduling of data traffic, this has solved because RN and the scheduling of DeNB data traffic are separate, RN buffer may occur and overflow situation, cause the problem of Un mouth or the used transmission resource waste of Uu mouth.The technical scheme that the embodiment of the invention provides can make the scheduling of DeNB and RN be associated, and described DeNB carries out the scheduling of data traffic according to the comprehensive buffer status information that RN reports to described RN, reduces the probability that RN buffer overflows.
Description of drawings
The flow control methods flow chart that Fig. 1 provides for the embodiment of the 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 Figure 4;
The volume control device structural representation one that Fig. 6 provides for the embodiment of the invention;
The volume control device structural representation two that Fig. 7 provides for the embodiment of the invention;
The volume control device structural representation three that Fig. 8 provides for the embodiment of the invention;
The structural representation of second generation unit in the volume control device that Fig. 9 provides for inventive embodiments shown in Figure 8;
The architecture of base station schematic diagram that Figure 10 provides for the embodiment of the invention.
Embodiment
, RN buffer may to occur and overflow situation because RN and the scheduling of DeNB data traffic are separate in order solving, cause the problem of Un or the used transmission resource waste of Uu interface, the embodiment of the 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 invention provides comprises:
In the described step 101, described UE buffer status information is represented the buffer status of UE buffer, comprises up buffer status information of UE and/or UE down buffer storage state information.
In the described step 102, described RN buffer status information is represented 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 that according to the flow control methods that present embodiment provides, when not considering the problem of signaling consumption, directly skips steps 103, and UE buffer status information and RN buffer status information are reported DeNB respectively.
The flow control methods that the embodiment of the invention provides, the described comprehensive buffer status information that reports according to RN, DeNB can know that RN and UE get buffer status, thereby carry out the scheduling of data traffic, this has solved because RN and the scheduling of DeNB data traffic are separate, RN buffer may occur and overflow situation, cause the problem of Un mouth or the used transmission resource waste of Uu mouth.The technical scheme that the embodiment of the invention provides can make the scheduling of DeNB and RN be associated, and described DeNB carries out the scheduling of data traffic according to the comprehensive buffer status information that RN reports 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 the described step 202, after the main plot receives described comprehensive buffer status information,, the up-downgoing data of RN are dispatched in conjunction with the operating position of current wireless resource and the parameters such as priority of the UE business of dispatching.Because this scheduling is according to the up-downgoing cache information of UE and RN, therefore, reduction greatly is continuously introduced to the data volume of UE and the buffer of RN place, reduced the spill-out of data among the buffer.
What deserves to be explained is that 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 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 invention provides, described DeNB is after receiving the comprehensive buffer status information that described RN reports, with its basis as scheduling, solved because RN and the scheduling of DeNB data traffic are separate, be easy to occur RN buffer and overflow situation, cause the problem of Un mouth/used transmission resource waste of Uu mouth.The method that the embodiment of the 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 that receives, make DeNB be associated with the data traffic scheduling of RN, alleviate the metadata cache pressure of RN buffer, reduced the overflow probability of RN buffer.
In order to make those skilled in the art can more be expressly understood the technical scheme that the embodiment of the invention provides, below by specific embodiment, the flow control methods that the embodiment of the 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 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 that sets in advance.When timer reached described UE report cycle, RN obtained the UE buffer status information from UE.For example, described in the present embodiment UE report cycle is 5ms, and promptly RN obtains UE buffer status information from UE every 5ms.
In the present embodiment, described UE buffer status information is to represent to obtain by the percentage that data with existing capacity among the UE buffer accounts for UE buffer whole volume.This sentences UE down buffer storage state information is example, and after once RN obtained described UE down buffer storage state information 5ms on the distance, described RN obtained 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 represented in several ways, does not give unnecessary details one by one herein.
In order to reflect the buffer status of described UE more in time, before described step 301, the described flow control methods of the embodiment of the 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), a default threshold values is 8M in the descending buffer of described UE, in the data capacity among the descending buffer of described UE exceeds the descending buffer of described UE during default threshold values (being 8M), described UE down buffer storage state is for closing on overflow status, and UE initiatively reports UE down buffer storage state information to give RN.The default of certain described threshold values can be provided with in several ways, do not give unnecessary details one by one herein.
In sum, in the present embodiment, when the described UE down buffer storage state information that obtains as described RN is 80%, it may be that described RN periodically obtains the UE down buffer storage state information from described UE, also may be RN also not execution cycle property obtain but UE down buffer storage state has reached or when exceeding described threshold values (8M), the described UE down buffer storage state information that described UE initiatively reports.
In described step 302, described RN buffer status information comprises 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 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 when 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, though 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 the cycle setting of described RN generation RN buffer status information and described RN obtain described UE buffer status information is set also can be inequality, is the configurable amount of system.
In the present embodiment, described RN buffer status information is to represent to obtain by the percentage that data with existing capacity among the RN buffer accounts for RN buffer whole volume.This sentences RN down buffer storage state information is example, and described RN can generate this RN down buffer storage state information under following three kinds of situations: when RN obtained the UE down buffer storage state information of the descending buffer of described UE, RN generated RN down buffer storage state information, as 40%; After once RN periodically generated RN down buffer storage state information 5ms on the distance, RN generated this RN down buffer storage state information, as 60%; When RN closed on overflow status, RN generated this RN down buffer storage state information, as 90%.Certainly, described RN buffer status information can be represented to obtain in several ways, does not give unnecessary details one by one herein.
When closing on overflow status at described RN, RN generates this RN down buffer storage state information, and the flow control methods that the embodiment of the invention provides also comprises:
In described step 307, described threshold values can be preset in the described RN buffer, judge whether described RN buffer status is whether the described overflow status of closing on can surpass the threshold values that is preset in the described RN buffer by judging described RN buffer capacity, as, the whole volume of the descending buffer of described RN is 10M, a default threshold values is 8M in the descending buffer of described RN, in the data capacity among the descending buffer of described RN exceeds the descending buffer of described RN during default threshold values (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 provided with in several ways, do not give unnecessary details one by one herein.
In described step 303, described UE buffer status information and RN buffer status information are reported DeNB respectively, 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 DeNB adopt the radio resource control RRC means of signaling to 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, described RRC means of signaling reliability height, but the time delay of eating dishes without rice or wine is bigger; The mode time delay of described MAC control PDU is little, and signaling consumption is little, but reliability is low.
In the present embodiment, with descending buffer of UE and the descending buffer of RN is 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 the described step 304, the comprehensive buffer status information that generates 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, be example with descending buffer of UE and the descending buffer of RN, 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 the main plot receives described UE buffer status information and described RN buffer status information,, the up-downgoing data of RN are dispatched in conjunction with the operating position of current wireless resource and the parameters such as priority of the UE business of dispatching.Because this scheduling is according to the up-downgoing cache information of UE and RN, therefore, reduction greatly is continuously introduced to the data volume of UE and the buffer of RN place, reduced the spill-out of data among the buffer.
In the present embodiment, be example with descending buffer of UE and the descending buffer of RN, the described UE down buffer storage state information that reports according to described RN: 80% and RN down buffer storage state information: 40%, described DeNB dispatching downlink data traffic.Described DeNB not only according to described RN down buffer storage state information, also dispatches according to described UE down buffer storage state information when descending scheduling.When described UE down buffer storage state information is 80%, then illustrate UE descending buffer buffer memory mass data, though this moment, described RN down buffer storage state information only was 40%, DeNB is when carrying out descending scheduling, can reduce and give this UE allocation of downlink resource, promptly 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 makes the descending buffer of RN overflow to the accumulation of the fine downlink data that causes of the downlink quality of RN at RN.Reduced the probability that data exceed the descending buffer capacity of RN, greatly reduced owing to exceed the descending buffer capacity of RN and cause data to be abandoned, the defeated resource of waste Un oral instructions, the situation that reduces LTE-A system spectrum utilance takes place.
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 give unnecessary details one by one herein.
Flow control methods provided by the invention, by described UE buffer status information and RN buffer status information are reported described DeNB respectively, DeNB carries out the scheduling of data traffic according to described UE buffer status information and RN buffer status information, solved because RN and the scheduling of DeNB data traffic are separate, RN buffer may occur and overflow situation, cause the problem of the used transmission resource waste of Un mouth.Flow control methods provided by the invention, by described UE buffer status information and RN buffer status information are reported described DeNB respectively, 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, thereby reduced the probability that RNbuffer overflows with the scheduling of DeNB data traffic.
In the probability that reduction RN buffer overflows, the signaling consumption when reporting described UE buffer status information and RN buffer status information to give DeNB in order to reduce.
The flow control methods that another embodiment of the present invention provides as shown in Figure 4, after described step 302, also comprises step 308, generates comprehensive buffer status information according to described subscriber equipment buffer status information and via node buffer status information.
In the present embodiment, in the described step 303, described UE buffer status information and RN buffer status information are reported DeNB for described buffer status information is reported DeNB
Described comprehensive buffer status information can obtain by following function:
DL?BS*＝function(B1，B2)
Wherein, DL BS* is comprehensive buffer status information; B1 is a RN buffer status information value; B2 is a 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.Under the situation of known B1 and B2, obtain DL BS* by table 1.
Table 1 (the low load of 0 expression, 1 expression high capacity):
| B1 | 0 | 0 | 1 | 1 |
| B2 | 0 | 1 | 0 | 1 |
| DLBS* | 0 | 1 | 1 | 1 |
As shown in Table 1, when at least one was 1 among described B1 and the described B2, described DL BS* was 1, otherwise described DL BS* is 0.Method shown in the use table 1 only needs 1 bit information can reflect comprehensive buffer status information.
In order to reflect the descending and descending buffer status of RN of UE more accurately, present embodiment is represented 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 that also introduces 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.Under the situation of known B1 and B2, obtain DL BS* by table 2.
Table 2 (the low load of 1 expression, load in 0 expression, 1 expression 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, at this moment, in the present embodiment, the low load of-1 expression, load in 0 expression, 1 expression high capacity.When at least one was 1 among described B1 and the described B2, described DL BS* was 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* is 0; Otherwise described DL BS* is-1.Method shown in the use table 2 needs 2 bit informations to reflect comprehensive buffer status information, this method is than the method shown in the 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, 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*=function (B1, B2) realization also is not limited in the described two kinds of methods of the foregoing description, every kind of method is not given unnecessary details one by one herein.
In the present embodiment, with descending buffer of described UE and the descending buffer of described RN is example, described DeNB only need 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 exceed the descending buffer capacity of RN causes data to be abandoned, the defeated resource of waste Un and/or Uu oral instructions, the situation that reduces LTE-A system spectrum utilance takes place.Simultaneously, owing to introduce comprehensive buffer status information, when guaranteeing to prevent that RN from overflowing, reduced that described UE buffer status information and described RN buffer status information are reported 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 the 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 give unnecessary details one by one herein.
The flow control methods that the embodiment of the invention provides, by described comprehensive buffer status information is reported DeNB, DeNB carries out the scheduling of data traffic according to described comprehensive buffer status information, solved because RN and the scheduling of DeNB data traffic are separate, RN buffer may occur and overflow situation, cause the problem of the used transmission resource waste of Un mouth.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 signaling consumption in the described DeNB process, and make the scheduling of described RN and DeNB data traffic be associated, thereby reduced the probability that RN buffer overflows by described comprehensive buffer status information.
Further,, reduce the scheduling times of DeNB for when reducing RN buffer overflow probability, the flow control methods that yet another embodiment of the invention provides, as shown in Figure 5, above-mentioned steps 308 comprises:
Step 3081 according to described subscriber equipment buffer status information, is obtained through the UE buffer status information of forecasting behind the t1+t2;
Step 3082 according to described via node buffer status information, is obtained through the RN buffer status information of forecasting behind the t1;
Step 3083 generates comprehensive buffer status information according to described UE buffer status information of forecasting and described RN buffer status information of forecasting.
Herein, t1 is scheduling and the signaling process time delay of Un; T2 is scheduling and the signaling process time delay of Uu.
In the present embodiment, use function:
(t1 t2) obtains described comprehensive buffer status information in the described step 303 to DL BS*=function for b1, b2.Wherein, DL BS* is comprehensive buffer status information; B1 is a RN down buffer storage state information value; B2 is a UE down buffer storage state information value;
Described in the present embodiment function DL BS*=function (t1 t2) can be evolved to the function described in the foregoing description for b1, b2:
(B1 B2) obtains DL BS*=function.
What deserves to be explained is that described in the present embodiment DL BS* is comprehensive buffer status information; Described B1 is a RN down buffer storage state information value behind the t1; Described B2 is (t1+t2) back UE down buffer storage state information value.
(B1, (B1, implementation method B2) is identical, does not give unnecessary details one by one herein for the BS*=function of function DL described in implementation method B2) and the foregoing description for described function DL BS*=function in the present embodiment.
The scheduling of Un and scheduling and the signaling process time delay t2 of signaling process time delay t1 and Uu have been introduced on the basis that is created on above embodiment of described comprehensive buffer status information.Be example with descending buffer of described UE and the descending buffer of RN herein, after introducing t1 and t2 in the present embodiment, prediction after described B 1 delays time through t1 according to described RN down buffer storage state information obtains, and described B2 obtains through (t1+t2) time-delay back prediction according to described UE buffer status information.Described B1 obtains by historical data, current business speed, the offered load status predication of described b1, RN buffer at least; Described B2 obtains by historical data, current business speed, the offered load status predication of described b2, UEbuffer at least.
In the present embodiment, the purpose of introducing t1 and t2 is to consider when described DeNB receives the descending buffer state of described UE that RN reports and RN, the scheduling and the signaling process time 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 an example, and when the down buffer storage state information of RN is high capacity, RN needs this buffer status information is reported DeNB.After DeNB is known this information,, alleviate the overflow status of the descending buffer of RN by for example reducing modes such as downlink data transmission speed.But, if the descending transmission speed of RN much larger than the data of RN from the descending reception data of Un mouth, then RN is very fast oneself can realize the alleviation of overflowing, and need not handle scheduling by DeNB.Therefore, RN is before reporting described RN buffer status information, should be by the buffer state behind the transmitting-receiving of the historical data for example velocity estimation t1, if this overflow status can be resolved, then 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 with the UE down buffer storage state information that gets access to carry out (t1+t2) time-delay after prediction, thereby obtain information B2; And the described RN down buffer storage state information that RN generates carried out 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 give unnecessary details one by one herein.
The flow control methods that the embodiment of the invention provides, in conjunction with the RN buffer status information after the prediction t1 time-delay and (t1+t2) the UE buffer status information after the time-delay obtain comprehensive buffer status information, described comprehensive buffer status information is reported DeNB, DeNB carries out the scheduling of data traffic according to described comprehensive buffer status information, solved because RN and the scheduling of DeNB data traffic are separate, RN buffer may occur and overflow situation, cause the problem of the used transmission resource waste of Un mouth, and solved DeNB and RN, the nonsynchronous problem of scheduling that causes owing to time delay between the 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 the prediction time-delay, avoided the unnecessary scheduling times of DeNB, and make the scheduling of described RN and DeNB data traffic be associated, thereby reduced the probability that RN buffer overflows by described comprehensive buffer status information.
With said method accordingly, as shown in Figure 6, the embodiment of the invention also provides a kind of volume control device, is applied in the via node, comprising:
Acquiring unit 401 is used to obtain the UE buffer status information, and described UE buffer status information is temporary in the described acquiring unit, and its concrete implementation method can be described referring to step 301 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 invention provides also comprises:
Receive retransmission unit 407, be used to receive the UE buffer status information that UE initiatively reports, and sending the UE buffer status information that described UE initiatively reports 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 invention provides also comprises:
Second generation unit 404 is used for the via node buffer status information that the subscriber equipment buffer status information obtained according to described acquiring unit and described first generation unit generate and generates comprehensive buffer status information;
In the present embodiment, described second generation unit, comprise, as shown in Figure 9, receive subelement 4041, be used to receive the via node buffer status information that subscriber equipment buffer status information that described acquiring unit obtains and described first generation unit generate: generate subelement, 4042 described subscriber equipment buffer status information and described via node buffer status information according to described receiving element reception, 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 invention provides, described generation subelement also comprises:
The first predictor unit 4043, be used for subscriber equipment buffer status information according to described reception subelement reception, the subscriber equipment buffer status information of forecasting that prediction is delayed during through the scheduling of wave point and signaling process and delayed when the scheduling of air interface and signaling process, 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, be used for via node buffer status information according to described reception subelement reception, the via node buffer status information of forecasting of delaying when the scheduling of prediction process wave point and signaling process, 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 with described UE buffer status information and RN buffer status information, has 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 invention provides can report the buffer status information that obtains according to RN buffer status information and described UE buffer status information, make described DeNB when carrying out the data traffic scheduling, consider the buffer state of described RN and described UE simultaneously, thereby make DeNB be associated with the scheduling of RN, solved in the prior art because the problem that DeNB and the separate RN buffer that causes of RN scheduling overflow has reduced the probability that described RN buffer overflows.
As shown in figure 10, the embodiment of the invention also provides a kind of base station, comprising:
Receiving element 501 is used to receive the described comprehensive buffer status information that via node reports, and 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 invention provides, report described UE buffer status information and RN buffer status information to give DeNB by RN, 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 invention provides can be dispatched under 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 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 that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer-readable recording medium, as ROM/RAM, magnetic disc or CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within 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 (15)
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 the main plot.
2. method according to claim 1 is characterized in that, generates comprehensive buffer status information according to described subscriber equipment buffer status information and via node buffer status information, specifically comprises:
According to described subscriber equipment buffer status information, the subscriber equipment buffer status information of forecasting of delaying when obtaining, delaying when the scheduling of air interface and signaling process through the scheduling of wave point and signaling process;
According to described via node buffer status information, the via node buffer status information of forecasting of delaying when obtaining through the scheduling of wave point and signaling process;
Generate comprehensive buffer status information according to described subscriber equipment buffer status information of forecasting and described via node buffer status information of forecasting.
3. method according to claim 1 is characterized in that, describedly described comprehensive buffer status information is reported the main plot comprises:
Adopt the radio resource control RRC means of 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.
4. method according to claim 1 and 2 is characterized in that, described obtaining before the subscriber equipment buffer status information also comprises:
When the subscriber equipment buffer status when closing on overflow status, receive the subscriber equipment buffer status information that subscriber equipment initiatively reports.
5. method according to claim 4 is characterized in that, described when the subscriber equipment buffer status when closing on overflow status, receive the subscriber equipment buffer status information that subscriber equipment initiatively reports and comprise:
By judging whether described subscriber equipment capacity register surpasses default threshold values and judge that whether described subscriber equipment buffer status is for closing on overflow status.
6. method according to claim 1 and 2 is characterized in that, described generation via node buffer status information also specifically comprises:
Pre-set threshold value judges that by described threshold values whether the via node buffer status is for closing on overflow status;
When relaying nodal cache state when closing on overflow status, generate the via node cache information.
7. a flow control methods is characterized in that, comprising:
Receive the comprehensive buffer status information that via node reports;
According to described comprehensive buffer status information, described via node is carried out the scheduling of data traffic.
8. the method for a flow control is characterized in that, describedly according to described comprehensive buffer status information described via node is carried out the scheduling of data traffic, specifically comprises:
According to the operating position of described comprehensive buffer status information, current wireless resource and the user apparatus service priority of being dispatched, described via node is carried out the scheduling of data traffic.
9. a volume control device is applied in the via node, it is characterized in that, comprising:
Acquiring unit is used to obtain the subscriber equipment buffer status information;
First generation unit is used to generate the via node buffer status information;
Second generation unit is used for the via node buffer status information that the subscriber equipment buffer status information obtained according to described acquiring unit and described first generation unit generate and generates comprehensive buffer status information;
Report the unit, be used for the comprehensive buffer status information that described second generation unit generates is reported the main plot.
10. device according to claim 9 is characterized in that, described second generation unit comprises:
Receive subelement, be used to receive the via node buffer status information that subscriber equipment buffer status information that described acquiring unit obtains and described first generation unit generate:
Generate subelement, described subscriber equipment buffer status information and described via node buffer status information according to described receiving element receives generate comprehensive buffer status information.
11. device according to claim 10 is characterized in that, described second generation unit also specifically comprises:
Receive subelement, be used to receive the via node buffer status information that subscriber equipment buffer status information that described acquiring unit obtains and described first generation unit generate;
The first predictor unit, be used for the subscriber equipment buffer status information that receives according to described reception subelement, the subscriber equipment buffer status information of forecasting that prediction is delayed during through the scheduling of wave point and signaling process, delay when the scheduling of air interface and signaling process;
The second predictor unit is used for the via node buffer status information according to described reception subelement reception, the via node buffer status information of forecasting of delaying when the scheduling of prediction process wave point and signaling process;
Generate subelement, the via node buffer status information of forecasting that obtains is predicted in the subscriber equipment buffer status information of forecasting and the described second predictor unit that are used for obtaining according to the prediction of the described first predictor unit, generates comprehensive buffer status information.
12. device according to claim 9 is characterized in that, also comprises:
Receive retransmission unit, be used to receive the subscriber equipment buffer status information that described subscriber equipment initiatively reports, and this subscriber equipment buffer status information is transmitted to described acquiring unit.
13. device according to claim 9 is characterized in that, also comprises:
Default unit is used for pre-set threshold value;
Judge performance element, judge the via node buffer status whether for closing on overflow status by the threshold values in the described default unit, when relaying nodal cache state for closing on overflow status, notify described first generation unit generation via node buffer status information.
14. a base station is characterized in that, comprising:
Receiving element is used to receive the described comprehensive buffer status information that via node reports;
Scheduling unit is used for the comprehensive buffer status information according to described receiving element reception, described via node is carried out the scheduling of data traffic.
15. base station according to claim 14, it is characterized in that, described scheduling unit specifically is used for described via node being carried out the scheduling of data traffic according to the operating position of described comprehensive buffer status information, current wireless resource and the user apparatus service priority of being dispatched.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| 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 |
| WO2017032246A1 (en) * | 2015-08-21 | 2017-03-02 | 华为技术有限公司 | Method for processing relay node, base station, and relay node |
| CN111107010A (en) * | 2018-10-25 | 2020-05-05 | 华为技术有限公司 | Transmission control method and device |
| CN112218339A (en) * | 2020-09-30 | 2021-01-12 | 三维通信股份有限公司 | Relay transmission scheduling method and device, storage medium and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101123622B (en) * | 2006-08-09 | 2011-12-28 | 大唐移动通信设备有限公司 | A method and device for Iub interface traffic control |
| EP1916808A1 (en) * | 2006-10-27 | 2008-04-30 | Nokia Siemens Networks Gmbh & Co. Kg | Method of connection based scheduling with differentiated service support for multi-hop wireless networks |
| CN101453745B (en) * | 2007-11-29 | 2012-09-19 | 电信科学技术研究院 | Measurement method, transparent relay and base station in cell switching process |
| CN101494598B (en) * | 2008-01-25 | 2013-06-05 | 华为技术有限公司 | Flow control method, device and system |
| CN101547347B (en) * | 2009-04-30 | 2011-08-10 | 上海大学 | Overlay network layered multicast resource optimum allocation method for scalable video stream |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| WO2017032246A1 (en) * | 2015-08-21 | 2017-03-02 | 华为技术有限公司 | Method for processing 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 |
| CN111107010A (en) * | 2018-10-25 | 2020-05-05 | 华为技术有限公司 | Transmission 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 |
| CN112218339A (en) * | 2020-09-30 | 2021-01-12 | 三维通信股份有限公司 | Relay transmission scheduling method and device, storage medium and electronic equipment |
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| CN102065483B (en) | 2013-12-04 |
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