Summary of the invention
The objective of the invention is in the above-mentioned mobile communication system, independently the adjustment of service bandwidth can bring the concussion that service bandwidth is adjusted, and the existing business bandwidth allocation techniques can not be in the dynamic assignment adjustment that truly realizes service bandwidth, and provide a kind of mobile communication system service bandwidth dynamic control distributing method, this method synthesis is considered service bandwidth demand, professional covering, service power restriction and system loading limiting factor, and service bandwidth is realized dynamic Control Allocation.
For achieving the above object, a kind of mobile communication system service bandwidth dynamic control distributing method that the present invention adopts, this method at first is provided with the initial configuration parameter in system, this initial configuration parameter comprises progression and the pairing distribution bandwidth of each progression that service bandwidth is adjusted; The described progression that the minimum value of described distribution bandwidth is corresponding minimum; The highest described progression of greatest measure correspondence of described distribution bandwidth; Described initial configuration parameter also comprises the data business volume buffer threshold of the first incident power, the second incident power, system loading overload threshold and described first incident, the data business volume buffer threshold of described second incident;
Then, the real-time load of define system is during more than or equal to described system loading overload threshold, and the system loading state is the system loading upper limit; When defining professional realtime power more than or equal to the described first incident power, the service power state is the service power upper limit; When defining professional real-time buffer traffic carrying capacity more than or equal to the data business volume buffer threshold of described first incident, the traffic carrying capacity state is the traffic carrying capacity upper limit, and described professional real-time buffer traffic carrying capacity is when being less than or equal to the data business volume buffer threshold of described second incident, and the traffic carrying capacity state is the traffic carrying capacity lower limit;
Finish described initialization setting and the definition after, when system's polling cycle timer then, by following steps system service bandwidth is carried out dynamic Control Allocation:
Step 1, judge whether described system loading state reaches the described system loading upper limit, if reach, whether then then judges the system loading status timer, and then, then execution in step 5, and not then, then execution in step 2; If described system loading state does not reach the described system loading upper limit, then continue execution in step 2;
Step 2, judge whether described service power state reaches the described service power upper limit, if reach, whether then then judges the service power status timer, and then, then execution in step 5, and not then, then execution in step 3; If described service power state does not reach the described service power upper limit, then continue execution in step 3;
Step 3, judge whether described traffic carrying capacity state reaches described traffic carrying capacity lower limit, if reach, whether then then judges traffic carrying capacity lower limit timer, and then, then execution in step 5, and not then, then execution in step 4; If described traffic carrying capacity state does not reach described traffic carrying capacity lower limit, then continue execution in step 4;
Step 4, judge whether described traffic carrying capacity state reaches the described traffic carrying capacity upper limit, if reach, whether then then judges traffic carrying capacity upper limit timer, and then, then execution in step 6, and not then, then execution in step 8; If described traffic carrying capacity state does not reach the described traffic carrying capacity upper limit, then direct execution in step 8;
Step 5, judge whether the described progression of current described distribution bandwidth correspondence is described minimum, if not, then the described progression with current described distribution bandwidth correspondence reduces one-level, if then execution in step 7;
Step 6, judge whether the described progression of current described distribution bandwidth correspondence is described the highest, if not, then the described progression with current described distribution bandwidth correspondence increases one-level, if then execution in step 7;
Step 7, stop and this described progression is adjusted the relevant timer of reason, the adjustment of end primary system service bandwidth;
Step 8, wait for that described system polling cycle timer then after, carry out the dynamic Control Allocation of described next time system service bandwidth.
In the technique scheme, the adjustment of service bandwidth is divided into a plurality of different ranks, and give a corresponding business bandwidth of each level allocation numerical value, and making the stepped distribution of each other service bandwidth of level, system can be by raising or reducing the adjustment that rank realizes service bandwidth.The initial configuration parameter that sets in advance can be used for calculating define system load condition (SYS), service power state (MSP) and traffic carrying capacity state (MSB).
The first above-mentioned incident and second incident are whether the actual emission power that is used for detecting Radio Link is higher or lower than given threshold value, wherein, the characteristic parameter of the first incident power is the absolute thresholding of the corresponding first incident power, the characteristic parameter of the second incident power is the absolute thresholding of the corresponding second incident power, equally, the data business volume buffer threshold of the data business volume buffer threshold of first incident and second incident then is whether the actual amount of data that detects Radio Link is higher or lower than given data business volume buffer threshold value.The parameter characteristic of above-mentioned two incidents is that the present invention carries out trigger condition and the constraints that service bandwidth is dynamically adjusted.
In above-mentioned the step, the major function of used timer is to judge whether each measurement data all satisfies predefined all kinds of parameter condition in the given time, prevents that the erroneous judgement that the chance shake of system loading is caused from determining.
The dynamic Control Allocation principle of service bandwidth of the present invention is:
A. service bandwidth is reduced principle:
A. the traffic carrying capacity real-time requirement reduces
B. Ye Wu real-time transmitting power is too high
C. the real-time load of system is excessive
B. service bandwidth raises principle:
A. the traffic carrying capacity real-time requirement increases
Need satisfy following two constraintss simultaneously:
A. Ye Wu real-time transmitting power does not surpass predetermined threshold
B. the real-time load of system does not surpass predetermined threshold
System is by measuring SYS, MSP and MSB and according to the dynamic Control Allocation principle of above-mentioned service bandwidth, service bandwidth being carried out dynamic Control Allocation.
By technique scheme as can be seen, traffic needs, Power Limitation factor and the system loading that the present invention combines communication traffic be factor in many ways, service bandwidth is carried out dynamic Control Allocation, thereby can suppress in the traditional bandwidth adjustment technology, owing to consider local bandwidth separately, the Traffic Channel bandwidth concussion that brings by service bandwidth adjustment independently, can effectively utilize the Radio Resource of system, reduce signaling consumption, the peak-to-average force ratio that suppresses signal power is in the dynamic assignment adjustment that truly realizes service bandwidth.
Below, also the present invention is described in further detail in conjunction with the accompanying drawings by embodiment.
Embodiment
The present invention to the dynamic Control Allocation process of system service bandwidth as shown in Figure 1, its operating procedure is as follows:
Step 101, this step are initial state, need carry out initializing set and related definition, be specially, the initial configuration parameter is set, this initial configuration parameter comprises progression and the pairing distribution bandwidth of each progression that service bandwidth is adjusted, for example, the adjustment progression of service bandwidth can be made as the n level, the maximum allocated bandwidth of service bandwidth is made as R[n], once be made as R[n-1 for the pairing distribution bandwidth of the progression n-1 to 1 below the n] to R[1], Ye Wu original allocation bandwidth: Rlive_ini=R[s_ini then], and s_ini belongs to [1, .., n].In the initial configuration parametric procedure is set, also comprise the power (Pa) of first incident that is provided with (or being referred to as the A incident), power (Pb), system loading overload threshold (Lo), system loading recovery thresholding (Lr) and the data business volume buffer threshold (Ba) of A incident of second incident (or being referred to as the B incident), the data business volume buffer threshold (Bb) of B incident.After finishing above-mentioned initialization and being provided with, carry out to give a definition:
Definition SYS, and during the real-time load (Llive) 〉=Lo of the system of setting up departments, SYS is the system loading upper limit (SYSover); Definition service power state MSP, and when establishing professional realtime power (Plive) 〉=Pa, MSP is the service power upper limit (MSPover); When definition MSB, and when establishing professional real-time buffer traffic carrying capacity (Blive) 〉=Ba, MSB is the traffic carrying capacity upper limit (MSBhigh), and described Blive≤Bb, MSB is traffic carrying capacity lower limit (MSBlow).After finishing the setting and definition of initial state, mobile communication system service bandwidth is carried out dynamic Control Allocation by following steps.
The polling cycle timer of step 102, decision system whether then, when polling cycle then, then execution in step 104; When polling cycle not then, then step 102 is waited for and returned to execution in step 103.
Step 104, judge whether SYS reaches SYSover, if reach, then execution in step 105; If do not reach, then execution in step 112.
Step 105, judge that whether system loading status timer (TimerSYS) starts, when TimerSYS does not start, then execution in step 106; When TimerSYS starts, then execution in step 107.
Step 106, startup TimerSYS.
Step 107, whether then to judge TimerSYS, then, then execution in step 108, not then, then change execution in step 114 over to by the A among the figure.
Step 108, judge whether the progression of current distribution bandwidth correspondence is minimum, that is to say, whether the pairing distribution bandwidth of this progression has been minimum, if not, then execution in step 109, if the progression of current distribution bandwidth correspondence is minimum, then execution in step 110.
Step 109, the pairing progression of current distribution bandwidth is reduced one-level, promptly by original R[s] reduce to R[s-1] (s and s-1 belong to two adjacent progression in the progression scope [1 .., n]).
Step 110, stop to adjust the timer that reason is associated with this allocated bandwidth.
The adjustment of step 111, end primary system service bandwidth.Under this situation, wait for that new polling cycle then after, from the adjustment of the system service bandwidth of step 104 a beginning new round.
Step 112, judge whether TimerSYS starts, if start, execution in step 113 back execution in step 114 then, if start, direct execution in step 114 then.
Step 113, stop TimerSYS.
Step 114, judge whether MSP reaches MSPover, if reach, then execution in step 115; If MSP does not reach MSPover, then execution in step 118.
Execution in step 115, judge that whether service power status timer (TimerMSP) starts, when not starting, then execution in step 116; When starting, execution in step 117.
Step 116, startup TimerMSP.
Step 117, whether then to judge TimerMSP, then, then execution in step 108, not then, then change execution in step 120 over to by B among the figure.
Step 118, judge whether TimerMSP starts, if start, then execution in step 120, if start, then execution in step 119.
Step 119, stop TimerMSP.
Step 120, judge whether MSB reaches MSBlow, if reach, then execution in step 121; If do not reach, then execution in step 124.
Step 121, judge that whether traffic carrying capacity lower limit timer (TimerMSB1) starts, when it did not start, then execution in step 122; When it starts, then execution in step 123.
Step 122, startup TimerMSB1 at this moment, if traffic carrying capacity upper limit timer (TimerMSBh) is a starting state, then stop TimerMSBh.
Step 123, whether then to judge TimerMSB1, then, then execution in step 108; Not then, then do not change execution in step 126 over to by C among the figure.
Step 124, judge whether TimerMSB1 starts, if start, then execution in step 126, if start, then execution in step 125.
Step 125, the execution in step 126 again that stops behind the TimerMSB1.
Step 126, judge whether MSB reaches MSBhigh, if reach, then execution in step 127; If no show, then execution in step 111.
Step 127, judge whether TimerMSBh starts, when not starting, then execution in step 128; During startup, then execution in step 129;
Step 128, startup TimerMSBh at this moment, if TimerMSB1 is a starting state, then stop this TimerMSB1.
Step 129, whether then to judge TimerMSBh, then, then execution in step 130; Not not then, execution in step 111 then.
Step 130, judge current distribution bandwidth correspondence progression whether for the highest, that is to say that whether the pairing distribution bandwidth of this progression has been maximum, if not, then execution in step 131; If then change execution in step 110 over to by the D among the figure.
Step 131, the pairing progression of current distribution bandwidth is increased one-level, promptly by original R[s] increase to R[s+1] (s and s+1 belong to two adjacent progression in the progression scope [1 .., n]).
In above-mentioned process of carrying out Control Allocation or adjustment at service bandwidth, communication system is with reference to SYS, these three parameters of MSP and MSB.Because in real-time system, these three parameters are to be at any time among the variation, when reading these three parameters, interference for the unstable numerical value that prevents some moments, cause the deviation of adjustment process, can be by the corresponding mode of setting timer respectively, read stable, parameter accurately.The setting of the polling cycle timer of system makes system can carry out the dynamic assignment control of taking turn formula by pre-set time interval to the service bandwidth of system.
In the present invention, because SYS, MSP and MSB always are in variation, therefore, for the assurance system can obtain the parameter of real-time change, need be to SYS, MSP and MSB upgrade, and this renewal can not rely on system the distribution of bandwidth is controlled process and independently of one another parallel, and concrete renewal process is as follows.
Renewal process to SYS
As shown in Figure 2, beginning is during initialization, and SYS is in the moderate duty state, that is, the Llive that loads in real time of system is between Lo and the Lr.In service in system, the renewal process of SYS comprises following each step.
Step 210, judge whether to receive the real-time load measurement report information of system, if receive, then execution in step 211, if do not receive, then execution in step 213.
Step 211, whether judge current Llive more than or equal to Lo, if judged result is for being, then SYS arrives SYSover, and execution in step 213 then; If judged result is not for being that then execution in step 212;
Step 212, judge whether current Llive is less than or equal to Lr, if judged result is for being, then SYS arrives SYSreover, and execution in step 213 then; If judged result is not for being, the then described SYS state (SYSmid) that mediates, execution in step 213 then;
The operation that step 213, end are once upgraded SYS is waited for next time and being upgraded.
Renewal process to MSP
As shown in Figure 3, during the beginning initialization, MSP is in the mid power state, that is, professional realtime power Plive is between Pa and the Pb.In service in system, the renewal process of MSP comprises following each step.
Step 220, judge whether to receive professional transmitting power measurement report information in real time, if receive, then execution in step 221; If do not receive, then execution in step 223;
Step 221, whether judge current Plive more than or equal to Pa, if judged result is for being, then MSP arrives MSPover, and execution in step 223 then; If judged result is not for being that then execution in step 222;
Step 222, judge whether current Plive is less than or equal to Pb, if judged result is for being, then MSP arrives MSPreover, and execution in step 223 then; If judged result is not for being, the MSP state (MSPmid) that mediates then, execution in step 223 then;
The operation that step 223, end are once upgraded MSP is waited for next time and being upgraded.
Renewal process to MSB
As shown in Figure 4, during the beginning initialization, MSB is in medium traffic carrying capacity state, that is, Blive is between Ba and the Bb.In service in system, the renewal process of MSB comprises following each step.
Step 230, judge whether to receive professional transmitting power measurement report information in real time, if receive, then execution in step 231; If do not receive, then execution in step 233;
Step 231, whether judge current Blive more than or equal to Ba, if judged result is for being, then MSB arrives MSBhigh, and execution in step 233 then; If judged result is not for being that then execution in step 232;
Step 232, judge whether current Blive is less than or equal to Bb, if judged result is for being, then MSB arrives MSBlow, and execution in step 233 then; If judged result is not for being, the MSB state (MSBmid) that mediates then, execution in step 233 then;
The operation that step 233, end are once upgraded MSB is waited for next time and being upgraded.
The renewal process of above-mentioned three parameters walks abreast, and does not have coupled relation each other, and the relevant state of all safeguarding is separately upgraded in the measurement of each parameter, and wherein judged result need all be set up in a period of time, can confirm to set up.
The concise and to the point process of a specific embodiment of the present invention is as follows.
At first, the initial configuration parameter is set
Service bandwidth is adjusted progression N=3;
Professional maximum allocated bandwidth R[3]=384kbps;
Professional inferior little distribution bandwidth R[2]=144kbps;
Professional smallest allocation of bandwidth R[1]=64kbps;
And, professional original allocation bandwidth Rlive_ini=R[2].
If the maximum transmission power Pmax=38dBm of the business of communication system;
If A incident power P a=37dBm, B incident power P b=32dBm.
System traffic overload thresholding: Lo=42dBm sets up departments;
System load restoration thresholding: Lr=40dBm sets up departments.
More than restriction relation between two parameters: Lo>Lr
If traffic carrying capacity A event data traffic carrying capacity buffer threshold: Ba=4K BYTEs;
If traffic carrying capacity B event data traffic carrying capacity buffer threshold: Bb=1K BYTEs.
System obtains the real-time load Llive=39.5dBm of system, professional realtime power Plive=37.5dBm, professional real-time buffer traffic carrying capacity Blive=5K BYTEs in measurement, thereby obtains:
Llive=<Lr,SYS=SYSrecover;
Plive>=Pa,MSP=MSPover;
Blive>=Ba,MSB=MSBhigh。
Go on foot as can be known according to the dynamic Control Allocation process of above-mentioned service bandwidth shown in Figure 1, though the load condition of current system is lower, and traffic needs requires to increase bandwidth, but because service power overload, the speed of final service bandwidth is reduced one-level because of this,, makes Rlive=R[1 that is]=64kbps.
Results of industrial application
The inventive method has considered that simultaneously business datum flow demand, service power configurable limit and three factors of system loading carry out the dynamic assignment of service bandwidth, have and be easy to realize, calculation of complex is low, overhead is little, be convenient in real system exploitation characteristics such as applications, can avoid considering separately that local bandwidth is adjusted demand and the bandwidth control that causes is shaken, can effectively utilize the Radio Resource of system, reduce signaling consumption, suppress the peak-to-average force ratio of signal power.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.