CN101282173A - Method, system and apparatus for adjusting data package transmission velocity - Google Patents
Method, system and apparatus for adjusting data package transmission velocity Download PDFInfo
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- CN101282173A CN101282173A CNA2008100976140A CN200810097614A CN101282173A CN 101282173 A CN101282173 A CN 101282173A CN A2008100976140 A CNA2008100976140 A CN A2008100976140A CN 200810097614 A CN200810097614 A CN 200810097614A CN 101282173 A CN101282173 A CN 101282173A
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Abstract
An embodiment of the invention discloses a method for regulating the transmitting speed of data package, a system and a device thereof. The method for regulating the transmitting speed of the data package comprises the following steps: calculating the shaking statistic of the data in the transmission link according to the received backward reporting BR package; determining whether the shaking statistic exceeds the prearranged first speed reduction threshold; and if the shaking statistic exceeds the first speed reduction threshold, executing speed reduction procession to the transmission speed of the data package. Through the embodiment of the invention, the base station controller self-adaptively regulates the data package transmission speed of the base station controller according to the shaking statistic calculated by the base station controller thereby effectively controlling the discharging flow rate of the base station controller, increasing the stability of the system under the state of heavy load, reducing the package loss and time delay of the transmission link and increasing the usage factor of the band width.
Description
Technical field
The embodiment of the invention relates to communication technical field, particularly a kind of method of adjustment of data package transmission velocity, system and device.
Background technology
In the communications field, the transmission link between base station and the base station controller often needs to take the very big cost of operator, and the mode that the employing of therefore a lot of operators is shared connects the transmission link between base station and the base station controller, to save cost.The problem of bringing like this is the transmission rate instability of transmission link, bandwidth fluctuation is very big, need 3G (3rd Generation, the 3G (Third Generation) Moblie technology) equipment can detect the rate fluctuation and the available bandwidth of transmission link automatically, and then transmission link bandwidth controlled, to guarantee the peak use rate of transmission link bandwidth.
Existing system is according to BTS (Base Transceiver Station, base transceiver station) the Flow Control message that reports, by the transmission link bandwidth of BSC (Base Station Controller, base station controller), send data to BTS according to Flow Control window size and distribution.The a small amount of buffer memory that has only chip internal on the BTS channel plate, data traffic transmission adopts request mechanism, the data volume of controlling transmit leg transmission does not fast exceed recipient's at a slow speed receiving ability, be just to issue data after BSC receives the transmission data transfer request of BTS, thereby guaranteed that data volume that BSC issues can not surpass the reception buffer size of BTS to BTS.
In closed-loop control system, when the frequency of input signal is higher than certain thresholding, be that the pace of change of transmission link bandwidth is when being higher than certain thresholding, because the restriction of system hardware performance for example: FM (ForwardMonitoring, forward monitor) Bao the transmission cycle can not be infinitely small, can cause closed-loop control system can't follow the tracks of the variation of input signal, thereby can't accurately detect the variation of transmission link bandwidth.
Therefore, the inventor finds that there is following problem at least in prior art: prior art is to closed-loop control system, the scene that transmission link bandwidth changes, can't correctly adjust transmission rate, the transmission link bandwidth of estimating when closed-loop control system is during greater than actual value, can cause on the transmission link a large amount of packet losses, the transmission link bandwidth of estimating when closed-loop control system then can cause the transmission link bandwidth utilance to reduce during less than actual value.
Summary of the invention
The embodiment of the invention provides a kind of method of adjustment, system and device of data package transmission velocity, to realize the shake statistic dynamic adjusting data packet sending speed according to transmission link.
For achieving the above object, the embodiment of the invention provides a kind of method of adjustment of data package transmission velocity on the one hand, comprising: the shake statistic of calculating data on the transmission link according to the backward supervision BR bag that receives; Judge whether described shake statistic surpasses the first default reduction of speed thresholding; If described shake statistic surpasses the described first reduction of speed thresholding, then the data packet sending speed is carried out reduction of speed and handle.
On the other hand, the embodiment of the invention also provides a kind of Adjustment System of data package transmission velocity, comprise: base station controller, be used for creating and send forward monitor FM and wrap, calculate the shake statistic of data on the transmission link according to the backward supervision BR bag that receives, judge that whether described shake statistic surpasses the first default reduction of speed thresholding, when described shake statistic surpasses the described first reduction of speed thresholding, described data package transmission velocity is carried out reduction of speed handle; The base station is used to receive the FM bag that described base station controller sends, and creates Back Report BR bag, and described BR bag is fed back to described base station controller.
On the one hand, the embodiment of the invention also provides a kind of base station controller, comprising again: computing module is used for the shake statistic according to data on the backward supervision BR bag calculating transmission link that receives; Judge module is used to judge whether the shake statistic of data on the transmission link that described computing module calculates surpasses the first default reduction of speed thresholding; The reduction of speed module is used for described data package transmission velocity being carried out reduction of speed handling when described judge module judges that the shake statistic of data on the described transmission link surpasses the described first default reduction of speed thresholding.
On the one hand, the embodiment of the invention also provides a kind of base station, comprising again: receiver module is used to receive the FM bag that base station controller sends; Back Report BR creation module is used to create Back Report BR bag; Feedback module, the BR bag that is used for described BR creation module is created feeds back to described base station controller.
Compared with prior art, the embodiment of the invention has the following advantages: the embodiment of the invention is wrapped the shake statistic of calculating data on the transmission link according to the BR that receives, and according to the shake statistic dynamic adjusting data packet sending speed that calculates.Thereby realized reducing the packet loss of transmission link, reduced transmission link time-delay, improved the utilance of transmission link bandwidth, improved data package transmission velocity, promoted user's impression.
Description of drawings
Fig. 1 is the flow chart of the method for adjustment of embodiment of the invention data package transmission velocity;
Fig. 2 is the flow chart of the method for adjustment embodiment one of data package transmission velocity of the present invention;
Fig. 3 is the structure chart of the Adjustment System of embodiment of the invention data package transmission velocity;
Fig. 4 is the structure chart of embodiment of the invention base station controller;
Fig. 5 is the structure chart of embodiment of the invention base station.
Embodiment
The embodiment of the invention provides a kind of method of adjustment of data package transmission velocity, calculate the shake statistic of data on the transmission link according to the BR bag that receives, and it is congested to judge according to the shake statistic of calculating whether transmission link has produced, if produce the congested flow that then reduces the base station controller port of export, and then the data traffic of control transmission link, avoid a large amount of packet losses.Thereby realized reducing the packet loss of transmission link, reduced transmission link time-delay, improved the utilance of transmission link bandwidth, improved data package transmission velocity, promoted user's impression.
The embodiment of the invention adopts IPPM (IP link Performance Monitor, the IP link performance monitors) detection method, by FM bag and BR (Backward Reporting, Back Report) packet drop of bag detected transmission link, base station controller periodically sends FM bag, the bag number that the indication base station controller sends, and wherein the transmission cycle of FM bag can be fixing duration, also can be n bag of every transmission, base station controller sends a FM bag.The base station receives that FM bag back answer BR wraps the bag number that report receives, and the BR that is replied according to the base station by base station controller wraps calculating shake statistic.In the embodiment of the invention, it is congested that base station controller judges according to the shake statistic whether transmission link has produced, if produce the congested data package transmission velocity that then reduces base station controller, and then the data traffic of control transmission link is avoided a large amount of packet losses.In addition, it is congested that base station controller can also judge whether transmission link has produced according to packet loss, congestedly then the data package transmission velocity of base station controller carried out reduction of speed and handle if produce.
As shown in Figure 1, the flow chart for the method for adjustment of embodiment of the invention data package transmission velocity specifically may further comprise the steps:
Step S101 is according to the shake statistic of data on the BR bag calculating transmission link that receives.
Be specifically as follows:
Base station controller is after receiving a BR bag, according to the delivery time of the FM bag corresponding with this BR bag and the time delay of calculating this transmission BR bag the time of reception that this BR wraps.Then, according to the time delay instantaneous value of this transmission BR bag with transmit the jitter value of this transmission of mean value calculation of the time delay of BR bag before this, with the jitter value of this transmission shake statistic, perhaps with the average of the jitter value of this transmission shake statistic as transmission link as transmission link.
Step S102 judges whether the shake statistic of calculating surpasses the first default reduction of speed thresholding.When the shake statistic surpasses this first reduction of speed thresholding, execution in step S103; When the shake statistic is lower than the first default reduction of speed thresholding, execution in step S104.
Step S103 carries out reduction of speed to the data package transmission velocity of base station controller and handles.When base station controller need carry out reduction of speed to the data package transmission velocity of this base station controller when handling, base station controller judges that at first what this base station controller last time the data packet sending speed is carried out is that raising speed is handled, still reduction of speed processing.If base station controller carried out the reduction of speed processing to the data packet sending speed last time, then need sluggish certain number of times, again the data packet sending speed being carried out reduction of speed handles, be need between double reduction of speed is handled between at regular intervals, embodiment of the invention utilization detects system and characterizes this time interval for the number of times of congestion state, be N continuous when time all detecting system and being congestion state, base station controller just carries out reduction of speed to the data packet sending speed to be handled.If what base station controller last time carried out the data packet sending speed is that raising speed is handled, then carries out reduction of speed immediately and handle.
Step S104 carries out raising speed to the data package transmission velocity of base station controller and handles.When base station controller need carry out raising speed when handling to the data packet sending speed, base station controller judges that at first what this base station controller last time the data packet sending speed is carried out is that raising speed is handled, still reduction of speed processing.If base station controller carried out the raising speed processing to the data packet sending speed last time, then need sluggish certain number of times, again the data packet sending speed being carried out raising speed handles, be need between double raising speed is handled between at regular intervals, embodiment of the invention utilization detects the number of times that system is not in congestion state and characterizes this time interval, be N continuous when time all detecting system and not being in congestion state, base station controller just carries out raising speed to the data packet sending speed to be handled.If what base station controller last time carried out the data packet sending speed is that reduction of speed is handled, then carries out raising speed immediately and handle.
In addition, the also further accounting base-station controller of the embodiment of the invention sends number-of-packet, and the base station receives number-of-packet.Then, send number-of-packet according to the base station controller of statistics and receive number-of-packet with the base station and calculate number of dropped packets, and according to the packet loss of data on the number of dropped packets of calculating and the base station controller transmission number-of-packet calculating transmission link.When the packet loss of data on the transmission link surpassed the second default reduction of speed thresholding, it is congested that base station controller can judge that also transmission link has produced, and the data package transmission velocity of described base station controller is carried out the reduction of speed processing.
The method of adjustment of above-mentioned data package transmission velocity, base station controller calculates the shake statistic of data on the transmission link according to the BR bag that receives, and dynamically adjusts the data package transmission velocity of base station controller according to the shake statistic of calculating.Thereby realized reducing losing of packet on the transmission link, reduced transmission link time-delay, improved the utilance of transmission link bandwidth, improved data package transmission velocity, promoted user's impression.
As shown in Figure 2, the flow chart for the method for adjustment embodiment one of data package transmission velocity of the present invention specifically may further comprise the steps:
Step S201 is according to the time delay and the time delay average of data on the BR bag calculating transmission link that receives.
Base station controller whenever receives a BR bag, all calculates the time delay of this BR bag.Be specifically as follows:
A) calculate time delay instantaneous value for the first time, after receiving a BR bag, the delivery time of the FM bag that the base station controller basis is corresponding with this BR bag calculates this with the time of reception of this BR bag and transmits the time delay that this BR wraps, be Delay=(T2-T1), wherein, T1 is the FM delivery time, and T2 is the FM time of reception or BR delivery time;
B) making the initial value of time delay average DelayAverage is Delay, and delay statistics is only carried out an initialization when algorithm starts.Owing to do not have enough data computation mean value during system initialization, so the initial value of embodiment of the invention agreement DelayAverage is the instantaneous value of the time delay first time.
Step S202, base station controller is according to the time delay and the time delay mean value computation shake statistic of data on the transmission link.
After system finished initialization, base station controller calculated the shake statistic according to following steps.
A) calculate the jitter value of this transmission, base station controller is according to the time delay instantaneous value of this transmission BR bag and transmit the jitter value of this transmission of mean value calculation of the time delay of BR bag before this, shake Jitter=(Delay-DelayAverage), promptly this jitter value that calculate to obtain equals this and calculates the time delay instantaneous value that obtains and history average poor of time delay in the past.
When this jitter value that calculate to obtain greater than a half of the history average of time delay in the past, this jitter value that calculate to obtain and the difference of the history average of time delay are in the past calculated the jitter value that obtains, i.e. Jitter=Jitter-DelayAverage as this.
B) calculate shake statistic JitterMean.
JitterMean=Jitter, promptly with the jitter value of this transmission shake statistic as transmission link,
Perhaps,
Accumulated value/JitterCnt of JitterMean=Jitter, wherein JitterCnt is the statistic of the number of times of calculation delay, promptly with the average of the jitter value of this transmission shake statistic as transmission link.
The embodiment of the invention provides two kinds of methods of calculating shake statistic JitterMean, the former adopts the shake instantaneous value as shake statistic JitterMean, can increase the speed of closed-loop control like this, change under the fast scene in transmission link bandwidth, adopt this method can obtain better to control effect.
The latter adopts the shake mean value of long-time statistical as shake statistic JitterMean, can obtain higher data confidence level like this, changes under the slow scene in transmission link bandwidth, adopts this method can obtain better to control effect.
Step S203, the statistics number of dropped packets is calculated packet loss according to the number of dropped packets of statistics.
Because base station controller whenever receives N BR bag and just carries out the calculating of a packet loss, so the base station controller transmission number-of-packet that also will further add up, and base station reception number-of-packet, for the calculating of packet loss lays the foundation.
Each FM bag the inside that sends at base station controller all has a field to be responsible for writing down the accumulated value of the current transmission number-of-packet of this base station controller, and the field that the embodiment of the invention claims to write down current transmission number-of-packet is FwdTxPkt.The same BR that sends to base station controller in base station bag the inside also has a field accordingly and is responsible for writing down base station reception number-of-packet.The field that the embodiment of the invention claims to write down current reception number-of-packet is FwdRxPkt.
Suppose that the sequence number of BR that the current base station controller is received bag is x, through after a while, after base station controller was received N BR bag, the sequence number that last BR that suppose to receive wraps was y, and then base station controller is added up packet loss and is specially:
(1) number of dropped packets in calculating during this period of time, Nei number of dropped packets is the difference that base station controller sends number-of-packet and base station reception number-of-packet during this period of time, promptly number of dropped packets=base station controller sends number-of-packet-base station and receives number-of-packet.
Wherein, base station controller sends number-of-packet=FwdTxPkt (y)-FwdTxPkt (x), and FwdTxPkt (y) is the FwdTxPkt field of the FM bag of y for sequence number; FwdTxPkt (x) is the FwdTxPkt field of the FM bag of x for sequence number.
The base station receives number-of-packet=FwdRxPkt (y)-FwdRxPkt (x), and FwdRxPkt (x) is the FwdRxPkt field of the BR bag of x for sequence number; FwdRxPkt (y) is the FwdRxPkt field of the BR bag of y for sequence number.
(2) packet loss in calculating during this period of time according to interior during this period of time number of dropped packets, Nei packet loss is the ratio that number of dropped packets and base station controller send number-of-packet during this period of time, promptly packet loss=number of dropped packets/base station controller sends number-of-packet.
Step S204 according to the shake statistic and the packet loss that calculate, adjusts the data package transmission velocity of base station controller.
When the shake statistic surpassed the first default reduction of speed thresholding, the triggering base station controller carried out the reduction of speed processing to the data package transmission velocity of this base station controller, reduces the data package transmission velocity of base station controller.If the shake statistic surpasses the reduction of speed thresholding, then the data package transmission velocity to this base station controller carries out the raising speed processing, promptly improves the data package transmission velocity of base station controller.
When packet loss surpassed the second default reduction of speed thresholding, then the data package transmission velocity to this base station controller carried out the reduction of speed processing, reduces the data package transmission velocity of base station controller; If packet loss does not surpass the reduction of speed thresholding, then do not carry out any processing.
When if the result that shake statistic and two kinds of testing mechanisms of packet loss obtain is inconsistent, as long as there is a kind of testing result to require reduction of speed, then immediately the data package transmission velocity of this base station controller is carried out reduction of speed and handle, reduce the data package transmission velocity of base station controller.
When the time delay average surpasses the reduction of speed thresholding, can not handle by the Event triggered reduction of speed, but system mode can be changed to congestedly, extended meeting judges whether voluntarily that according to the congestion state of system needs carry out reduction of speed and handle behind the base station controller.
In embodiments of the present invention, statistic and the packet loss data package transmission velocity to this base station controller carries out the processing of variable step raising speed to base station controller or the variable step reduction of speed is handled according to shaking, carry out the adjustment of quick and less step-length according to the shake statistic, carry out at a slow speed and the adjustment of big step-length according to packet loss.
Wherein, when base station controller need carry out reduction of speed when handling to the data packet sending speed, base station controller judges that at first what this base station controller last time the data packet sending speed is carried out is that raising speed is handled, still reduction of speed processing.If base station controller carried out the reduction of speed processing to the data packet sending speed last time, then need sluggish certain number of times, again the data packet sending speed being carried out reduction of speed handles, be need between double reduction of speed is handled between at regular intervals, embodiment of the invention utilization detects system and characterizes this time interval for the number of times of congestion state, be N continuous when time all detecting system and being congestion state, base station controller just carries out reduction of speed to the data packet sending speed to be handled.If what base station controller last time carried out the data packet sending speed is that raising speed is handled, then carries out reduction of speed immediately and handle.
Base station controller carries out the reduction of speed processing to the data packet sending speed and is specially:
Cause packet loss if packet loss surpasses the reduction of speed thresholding, then reduce the data package transmission velocity of base station controller according to pre-defined rule.For example: the data package transmission velocity of the current data package transmission velocity=last time * reduction of speed factor, wherein, the reduction of speed factor is the positive number less than 1.
If the shake statistic surpasses the reduction of speed that the reduction of speed thresholding triggers, then reduce the data package transmission velocity of base station controller according to another kind of pre-defined rule.For example: data package transmission velocity * step size increments of current data package transmission velocity=last time, wherein, step size increments can be a single order oblique line model, slope is 1/5.
Simultaneously for the reliability of algorithm, after must guaranteeing the data packet sending speed carried out the reduction of speed processing, the logic port bandwidth can not be lower than predetermined minimum value, and this minimum value can be set according to actual needs.
In addition, be that raising speed is handled or reduction of speed is handled for what base station controller can be known last time the data packet sending speed is carried out, need also to safeguard that following variable is specially:
Because what this base station controller was carried out is that reduction of speed is handled, therefore with continuous raising speed counter (UpRateCounter) zero setting, continuous reduction of speed counter (DwnRateCounter) is added 1, and base station controller is that raising speed is handled or reduction of speed has been handled with regard to what can determine to carry out last time in the time need adjusting data package transmission velocity next time like this.
Wherein, when base station controller need carry out raising speed when handling to the data packet sending speed, base station controller judges that at first what this base station controller last time the data packet sending speed is carried out is that raising speed is handled, still reduction of speed processing.If base station controller carried out the raising speed processing to the data packet sending speed last time, then need sluggish certain number of times, again the data packet sending speed being carried out raising speed handles, be need between double raising speed is handled between at regular intervals, embodiment of the invention utilization detects the number of times that system is not in congestion state and characterizes this time interval, be N continuous when time all detecting system and not being in congestion state, base station controller just carries out raising speed to the data packet sending speed to be handled.If what base station controller last time carried out the data packet sending speed is that reduction of speed is handled, then carries out raising speed immediately and handle.
Base station controller carries out the raising speed processing to the data packet sending speed and is specially:
Base station controller will carry out raising speed to the data packet sending speed according to predetermined rule to be handled, for example, speed+rate increment of current speed=last time, wherein rate increment is according to the number of times exponential increase of carrying out the raising speed operation continuously, to improve the speed of algorithmic statement.But the data package transmission velocity of base station controller can not ad infinitum rise, and it must be less than the maximum of base station controller transmission rate, and this maximum can be provided with according to the greatest physical bandwidth of transmission link.
In addition, be that raising speed is handled or reduction of speed is handled for what base station controller can be known last time the data packet sending speed is carried out, need to safeguard following variable, be specially:
Because what this base station controller was carried out is that raising speed is handled, therefore system is with continuous reduction of speed counter (DwnRateCounter) zero setting, continuous raising speed counter (UpRateCounter) is added 1, and base station controller is that raising speed is handled or reduction of speed has been handled with regard to what can determine to carry out last time in the time need adjusting data package transmission velocity next time like this.
In addition, the embodiment of the invention with shake statistic and/or packet loss as the basis for estimation that whether needs the data package transmission velocity of base station controller is adjusted, according to the difference of application scenarios, also can shake statistic and/or lose byte rate as the basis for estimation that whether needs the data package transmission velocity of base station controller is adjusted.The computational methods of losing the packet loss of introducing among the computational methods of byte rate and the step S203 are just the same, and the field difference that only is to use does not repeat them here.To send byte number be 0 or to receive byte number be 0 o'clock detecting, and base station controller determines to take place packet loss, and to determine directly that then transmission link produces congested if this situation of several times takes place, and need carry out reduction of speed equally to the data package transmission velocity of base station controller and handle.
The method of adjustment of above-mentioned data package transmission velocity, base station controller calculates the shake statistic and the packet loss of data on the transmission link according to the BR bag that receives, and the data package transmission velocity of dynamically adjusting base station controller according to the shake statistic of calculating and/or packet loss.Thereby realized reducing losing of packet on the transmission link, reduced transmission link time-delay, improved the utilance of transmission link bandwidth, improved data package transmission velocity, promoted user's impression.
As shown in Figure 3, the structure chart for the Adjustment System of embodiment of the invention data package transmission velocity comprises:
The Adjustment System of above-mentioned data package transmission velocity, base station controller 31 calculates the shake statistic of data on the transmission link according to the BR bag of base station 32 feedbacks, when the shake statistic surpasses the first default reduction of speed thresholding, data package transmission velocity to base station controller 31 carries out the reduction of speed processing, realize reducing losing of packet on the transmission link, reduced transmission link time-delay, improved the utilance of transmission link bandwidth, improve data package transmission velocity, promote user's impression.
As shown in Figure 4, the structure chart for embodiment of the invention base station controller comprises:
Reduction of speed module 313 is used for when judge module 312 judges that the shake statistic of data on the transmission links surpasses the first reduction of speed thresholding, the data package transmission velocity of base station controller 31 is carried out reduction of speed handle.
Sending module 316 is used to send the FM bag that FM bag creation module 315 is created.
Wherein, computing module 311 can comprise:
This time-delay calculation submodule 3111 is used for after receiving a BR bag, according to the delivery time of the FM bag corresponding with this BR bag and the time delay of calculating this transmission BR bag the time of reception that this BR wraps;
Shake statistic calculating sub module 3112, the jitter value that is used for this transmission of mean value calculation of time delay of calculating according to this time-delay calculation submodule 3111 and the time delay of transmitting the BR bag before this, with the jitter value of this transmission shake statistic, perhaps with the average of the jitter value of this transmission shake statistic as this transmission link as transmission link.
Packet loss computing module 318, be used for sending number-of-packet and base station 32 reception number-of-packet calculating number of dropped packets according to the base station controller 31 of statistical module 317 statistics, and send the packet loss that number-of-packet are calculated data on the transmission links according to number of dropped packets and base station controller 31, when the packet loss of data on the transmission link surpassed the second default reduction of speed thresholding, the data package transmission velocity of 313 pairs of base station controllers 31 of notice reduction of speed module carries out reduction of speed to be handled.
Above-mentioned base station controller 31, computing module 311 calculates the shake statistic of data on the transmission link according to the BR bag of base station 32 feedbacks, when judge module 312 judges that the shake statistic surpasses the first default reduction of speed thresholding, the data package transmission velocity of 313 pairs of base station controllers 31 of reduction of speed module carries out reduction of speed to be handled, controlled the rate of discharge of base station controller 31 effectively, improve the stability of system under the heavy load situation, reduced the packet loss and the time delay of transmission link, improved bandwidth availability ratio.
As shown in Figure 5, the structure chart for embodiment of the invention base station comprises:
Receiver module 321 is used to receive the FM bag that base station controller 31 sends;
BR creation module 322 is used for creating Back Report BR bag after receiver module 321 receives the FM bag;
Feedback module 323, the BR bag that is used for BR creation module 322 is created feeds back to base station controller 31.
Above-mentioned base station 32, after receiver module 321 receives the FM bag, BR creation module 322 is created the BR bag, by feedback module 323 this BR bag is fed back to base station controller 31, thereby can make base station controller 31 calculate the shake statistic, and then adjust the data package transmission velocity of base station controller 31 adaptively according to this BR bag.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize based on such understanding by the mode that software adds necessary general hardware platform, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (12)
1, a kind of method of adjustment of data package transmission velocity is characterized in that, comprising:
Calculate the shake statistic of data on the transmission link according to the backward supervision BR bag that receives;
Judge whether described shake statistic surpasses the first default reduction of speed thresholding;
If described shake statistic surpasses the described first reduction of speed thresholding, then the data packet sending speed is carried out reduction of speed and handle.
2, the method for adjustment of data package transmission velocity according to claim 1 is characterized in that, also comprises:
When described shake statistic is lower than the described first reduction of speed thresholding, described data package transmission velocity is carried out raising speed handle.
3, the method for adjustment of data package transmission velocity according to claim 1 is characterized in that, the described shake statistic of calculating data on the transmission link according to the BR bag that receives specifically comprises:
After receiving BR bag, transmit the time delay that described BR wraps according to calculating this time of reception of the delivery time of the forward monitor FM bag corresponding and described BR bag with described BR bag;
According to this jitter value of described this transmission of mean value calculation that transmits the time delay instantaneous value of described BR bag and transmit the time delay of BR bag before this, with the jitter value of described this transmission shake statistic, perhaps with the average of the jitter value of described this transmission shake statistic as described transmission link as described transmission link.
4, as the method for adjustment of data package transmission velocity as described in the claim 3, it is characterized in that, further comprise:
The accounting base-station controller sends number-of-packet, and the base station receives number-of-packet;
Base station controller according to described statistics sends number-of-packet and described base station reception number-of-packet calculating number of dropped packets;
Send the packet loss that number-of-packet is calculated data on the described transmission link according to described number of dropped packets and base station controller.
5, as the method for adjustment of data package transmission velocity as described in the claim 4, it is characterized in that, when the packet loss of data on the described transmission link surpasses the second default reduction of speed thresholding, described data package transmission velocity is carried out reduction of speed handle.
6, a kind of Adjustment System of data package transmission velocity is characterized in that, comprising:
Base station controller, be used for creating and send forward monitor FM and wrap, calculate the shake statistic of data on the transmission link according to the backward supervision BR bag that receives, judge whether described shake statistic surpasses the first default reduction of speed thresholding, when described shake statistic surpasses the described first reduction of speed thresholding, described data package transmission velocity is carried out reduction of speed handle;
The base station is used to receive the FM bag that described base station controller sends, and creates Back Report BR bag, and described BR bag is fed back to described base station controller.
7, a kind of base station controller is characterized in that, comprising:
Computing module is used for the shake statistic according to data on the backward supervision BR bag calculating transmission link that receives;
Judge module is used to judge whether the shake statistic of data on the transmission link that described computing module calculates surpasses the first default reduction of speed thresholding;
The reduction of speed module is used for described data package transmission velocity being carried out reduction of speed handling when described judge module judges that the shake statistic of data on the described transmission link surpasses the described first reduction of speed thresholding.
8, as base station controller as described in the claim 7, it is characterized in that, also comprise:
The raising speed module is used for described data package transmission velocity being carried out raising speed handling when described judge module judges that the shake statistic of data on the described transmission link is lower than the described first reduction of speed thresholding.
9, as base station controller as described in the claim 7, it is characterized in that, also comprise:
FM wraps creation module, is used to create forward monitor FM bag;
Sending module is used to send the FM bag that described FM bag creation module is created.
10, as base station controller as described in the claim 7, it is characterized in that described computing module comprises:
This time-delay calculation submodule is used for after receiving backward supervision BR bag, transmits the time delay that described BR wraps according to calculating this time of reception of the delivery time of the FM bag corresponding with described BR bag and described BR bag;
Shake statistic calculating sub module, the jitter value that is used for described this transmission of mean value calculation of time delay of calculating according to described this time-delay calculation submodule and the time delay of transmitting the BR bag before this, with the jitter value of described this transmission shake statistic, perhaps with the average of the jitter value of described this transmission shake statistic as described transmission link as described transmission link.
11, as base station controller as described in the claim 10, it is characterized in that, also comprise:
Statistical module is used for the accounting base-station controller and sends number-of-packet, and the base station receives number-of-packet;
The packet loss computing module, be used for sending number-of-packet and described base station reception number-of-packet calculating number of dropped packets according to the base station controller of described statistical module counts, and send the packet loss that number-of-packet is calculated data on the described transmission link according to described number of dropped packets and base station controller, when the packet loss of data on the described transmission link surpasses the second default reduction of speed thresholding, notify described reduction of speed module that described data package transmission velocity is carried out reduction of speed and handle.
12, a kind of base station is characterized in that, comprising:
Receiver module is used to receive the forward monitor FM bag that base station controller sends;
The BR creation module is used for creating Back Report BR bag after described receiver module receives the FM bag;
Feedback module, the BR bag that is used for described BR creation module is created feeds back to described base station controller.
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