CN101448236B - Service model-based network charging system - Google Patents

Abstract

The invention discloses a service model-based network charging system. The network charging system is characterized in that a charging preprocessing subsystem formed by a monolithic processor externally connected with an erasable and programmable read-only memory and random access memory is additionally arranged in a charging system for a mobile switching center, and the working parameters of the charging preprocessing subsystem come form the unit charge rate of a charging management subsystem, the total bandwidth of a system and the maximum packet loss ratio and the service model of an access point controller; and the calculated charge rate is output to a charging processing subsystem, so that the communication network charging is changed into floating rate from the flat rate. The charging system can not only urge the network operators to ceaselessly perform network optimization and technology upgrading, but also can guide the users to spontaneously adjust the service model to realize the minimized charge, is a charging method for encouraging the operators to promote the network capacity as well as encouraging the users to save the bandwidth and the incentive compatibility for highly effective data transmission, is beneficial for long-term good interaction between the users and the operators and realizes the maximized social benefits of the network.

Description

A kind of network charge system based on business model

Technical field

The invention belongs to digital information transmission technical field, particularly in the packet network based on the network charging method of business model.

Background technology

At present,, obtained application more and more widely based on the network technology of transmitted in packets in the digital information transmission field, Virtual network operator how to the user carry out effectively and reasonably, the charging of science become a more and more important problem.

In existing charge system, the network user's charging is had based on charging ways such as duration, flow or flat rate systems.Charging way based on duration is to charge to the user according to user's surf time length; Charging way based on flow is how much to charge to the user according to user's online flow; No matter the mode of flat rate system then is to collect fixing expense and what of user's surf time and flow to the user in every month.Existing these charging ways all belong to more extensive charging way, and its common drawback is to implement different charging policy with communication quality according to different types of service.

The disclosed a kind of floating rate charging method that quantizes based on communication quality of Chinese patent CN1431842, in existing base station system, increased communication quality testing system, and quantization parameter that at first set to weigh communication quality in this quality test system is the error rate, with the desired reference value of the error rate as the communication quality normative reference; By communication quality testing system travelling carriage in the communication process is added up to the error rate that the base station periodically sends again, obtain the assembly average of the error rate; Comparative result according to the assembly average and the desired reference value of the error rate draws this calling quality grade and pairing Freight Basis parameter thereof; At last the Freight Basis of this conversation and two parameters of communication time being inputed to charge system simultaneously charges.The shortcoming of this method is that it is a kind of posterior charging way, before sign off, can't obtain assembly average and corresponding credit rating thereof, and then charge system can't be determined this pairing Freight Basis parameter of conversing before sign off as the error rate of this communication quality metric.And the concrete setting value as the desired reference value of the error rate of communication quality normative reference in this method lacks the unified standard with general convincingness, often according to each one sensory evaluation as according to setting numerical value, have subjective random.

Summary of the invention

The objective of the invention is to propose a kind of network charge system, to overcome the above-mentioned defective of the nontraffic sensitive charging way in the existing communication net based on business model.

The present invention is based on the network charge system of business model, utilize global system for mobile communications (GSM, Global System forMobile Communications) (the MSC of mobile switching centre of network, Mobile Switching Center) holds consultation and service is provided with user terminal, the cost information that the charge system of mobile switching centre should be collected the each communication of user terminal is to authentication, authorize and meter account (AAA, Authentication, Authorization and Accounting) server is reported, at last by authentication, mandate and meter account server are responsible for collecting the charges to the user;

Charge system is carried out following steps successively:

The first step, user terminal initiates to insert request to the access point controller of mobile switching centre, and submits the business model of requested service and the maximum packet loss that can tolerate to;

Second step, the charging preprocessing subsystem at first obtains business model and maximum packet loss from access point controller, from accounting management subsystem acquiring unit rate and overall system bandwidth, calculate rate then simultaneously, at last rate is passed to the charging processing subsystem as output;

In the 3rd step, charging processing subsystem and user terminal carry out rate to be consulted: the charging processing subsystem sends to user terminal with rate information; Whether user terminal accepts the judgement of rate, if do not accept this rate, then stops inserting request, if accept this rate, then feeds back rate and receives information to the charging processing subsystem; After the charging processing subsystem receives that rate is received information, activate the bandwidth Resource Scheduler immediately and distribute bandwidth for this service request, then bandwidth allocation information is fed back to user terminal, the timer that starts the charging processing subsystem simultaneously picks up counting;

In the 4th step, user terminal begins communication after receiving the bandwidth allocation information of charging processing subsystem feedback, if certain time slot user service flow amount is greater than the bandwidth of distributing, then to the dynamic extra bandwidth resources of application of bandwidth resources scheduler; If system also has remaining bandwidth, then the bandwidth resources scheduler is extra bandwidth application Resources allocation; Otherwise then user terminal abandons the grouping bag that exceeds in this time slot; Up to sign off, user terminal sends sign off information to the charging processing subsystem;

The 5th step, after the charging processing subsystem is received the sign off information of user terminal, at first stop timing, and concluding time of timer is deducted the time started obtain total call duration time, pass to the accounting management subsystem then according to rate and call duration time computational costs, and with the cost information that calculates;

In the 6th step, the cost information that the accounting management subsystem should be collected this service communication of this user passes to authentication, mandate and meter account server; Authentication, mandate and meter account server were posted a bill by every month to the user, and the mode of being paid the fees to bank by user oneself is finally finished the charge to the user then;

It is characterized in that:

In the charge system (12-2) of mobile switching centre (12), increase a charging preprocessing subsystem (12-2-2); This charging preprocessing subsystem (12-2-2) is made of an external Erasable Programmable Read Only Memory EPROM of single-chip microcomputer (21) (EPROM) (22) and a random-access memory (ram) (23); 4 required input parameters of its work are respectively: come from the unit rate (24) and the overall system bandwidth (25) of accounting management subsystem (12-2-3), and the business model (26) and the maximum packet loss (27) that come from access point controller (12-1); Its rate (28) of calculating gained outputs to charging processing subsystem (12-2-1);

Business model in the described first step (26) comprises parameter P _MaxAnd two information: parameter P of function f (p) _MaxNeed in the time slot to represent the maximum quantity of the grouping bag that transmits, be called peak rate; Needing the quantity of the grouping bag that transmits in time slot of function f (p) expression is the probability of p, is called speed distribution function;

Charging preprocessing subsystem (12-2-2) in described second step adopts following computing formula:

Computation rate average μ promptly needs the par of the grouping bag that transmits in time slot:

$\mathrm{\μ}=\underset{p=0}{\overset{P_{\max }}{\mathrm{\Σ}}}p\·f\left(p\right)---\left(1\right)$

The computation rate variances sigma ², promptly need the variance of the grouping bag quantity transmitted in time slot:

${\mathrm{\σ}}^2=\underset{p=1}{\overset{P_{\max }}{\mathrm{\Σ}}}{(p-\mathrm{\μ})}^2\·f\left(p\right)---\left(2\right)$

Calculate minimum number of users N, promptly system according to peak rate distribute bandwidth resources the number of users that can support simultaneously:

$N=\frac{C}{P_{\max }}---\left(3\right)$

C in the formula (3) is an overall system bandwidth, P _MaxBe peak rate;

Computing system packet loss L (n), grouping bag quantity promptly to be passed surpasses the grouping bag drop probability that overall system bandwidth caused:

$L\left(n\right)=\underset{x=C+1}{\overset{2C+1}{\mathrm{\Σ}}}\left(\frac{x-C}{x}\right)\·\mathrm{normpdf}(x,\mathrm{n\μ},n{\mathrm{\σ}}^2),n=N,N+1,...,C---\left(4\right)$

Normpdf (x, n μ, n σ in the formula (4) ²) expression average n μ, variance n σ ²Normal distribution get the probability density of x value;

Calculate thresholding number of users K, promptly meet the maximum of the number of users of maximum packet loss requirement:

$K=\underset{n}{\mathrm{Max}\arg }\{L\left(n\right)\&le;L_{\max }<L(n+1),n=N,N+1,...,C\}---\left(5\right)$

L in the formula (5) _MaxBe maximum packet loss;

Calculate rate V, promptly at this business model and tolerable maximum packet loss thereof the rate that should collect:

V in the formula (6) _UnitBe unit rate, operator The smallest positive integral more than or equal to x is got in expression;

Bandwidth resources scheduler (12-3) in described the 3rd step adopts the size of following formula dispensed bandwidth:

C is an overall system bandwidth in the formula (7), and K is the thresholding number of users, and D is for distributing bandwidth, operator

The maximum integer that is less than or equal to x is got in expression.

Charging processing subsystem (12-2-1) in described the 5th step according to the formula that rate and call duration time calculate the expense that these service communication needs of this user collect is:

F＝VT (8)

V is a rate in the formula (8), and T is a call duration time, and F is an expense.

The present invention has increased a charging preprocessing subsystem in the charge system of existing communication network, by changing the computational methods of rate, use floating rate to replace the existing fixed rate, has obtained a lot of good effects.Owing to the present invention is based on business model, the floating rate computational methods of employing formula (1)～(6) make that the setting of rate is a foundation with the Network Transmission cost; Owing to the bandwidth allocation methods of employing formula (7), taken into account the demand and the maximized demand of network bandwidth resources utilance of professional communication quality; Because the expense computational methods of employing formula (8) encourage the user to shorten the time that takies Internet resources according to the rate and the traffic of own service as far as possible.

Compare with the charging way based on duration of prior art, the present invention has considered actual bandwidth resources size and the communication quality that takies of user; Compare with the charging way based on flow, the present invention has considered the type of service in the practical communication process and the difference of communication quality; Compare with the bulk billing mode, the present invention's situation of having avoided network resources waste clearly helps the maximization of network resource utilization.

The present invention compares with the disclosed a kind of floating rate charging method that quantizes based on communication quality of Chinese patent CN1431842, the latter's shortcoming is that it is a kind of posterior charging way, before sign off, can't obtain assembly average and corresponding credit rating thereof, thereby charge system can't be determined this pairing rate of conversing before sign off as the error rate of this communication quality metric.And the present invention can calculate the user terminal of rate and announcement before the communication beginning.In addition, the latter often sets numerical value according to each one sensory evaluation, thereby has subjective random owing to lack the unified standard with general convincingness as the concrete setting value of the desired reference value of the error rate of communication quality normative reference.Rate of the present invention is calculated formula (1)～(6) of institute's foundation then fully based on the mathematical derivation of business model and statistic multiplexing theory, do not introduce any subjective factor, thereby result of calculation is objective unique.This is two important feature of the present invention and improvements.

Description of drawings

Fig. 1 is the network charge system block diagram that the present invention is based on business model;

Fig. 2 is the structure chart of charging preprocessing subsystem;

Fig. 3 is the charging flow figure of service communication;

Fig. 4 is the packet loss curve L of system;

Fig. 5 is the partial enlarged drawing of the packet loss curve L of system;

Embodiment

Introduce technical scheme of the present invention in detail below in conjunction with embodiment and accompanying drawing.

Embodiment 1:

The present invention is based on the network charge system of business model, utilize existing global system for mobile communications (GSM, GlobalSystem for Mobile Communications) (the MSC of mobile switching centre of network, Mobile Switching Center), in the charge system (12-2) of mobile switching centre (12), increase a charging preprocessing subsystem (12-2-2); Described charging preprocessing subsystem (12-2-2) is made of an external Erasable Programmable Read Only Memory EPROM of single-chip microcomputer (21) (EPROM) (22) and a random-access memory (ram) (23); 4 required input parameters of its work are respectively: come from the unit rate (24) and the overall system bandwidth (25) of accounting management subsystem (12-2-3), and the business model (26) and the maximum packet loss (27) that come from access point controller (12-1); Its 1 output result who calculates gained is rate (28), outputs to charging processing subsystem (12-2-1).

Fig. 1 is the network charge system block diagram that the present invention is based on business model; User terminal (11) inserts core network (13) by mobile switching centre (12); Mobile switching centre (12) charges to the communication process each time of user terminal (11), and the cost information that should collect is reported to aaa server (14).The access point controller (12-1) of mobile switching centre (12) is transmitted to the business datum of user terminal (11) and core network (13), the bandwidth allocation information of bandwidth resources scheduler (12-3) is transmitted to user terminal (11), the maximum packet loss information and the business model information of user terminal (11) are transmitted to charging preprocessing subsystem (12-2-2), and transmit the mutual control information between user terminal (11) and the charging processing subsystem (12-2-1).In charge system (12-2), the cost information that charging processing subsystem (12-2-1) should be collected the user to accounting management subsystem (12-2-3) output is to the instruction of bandwidth resources scheduler (12-3) output Resources allocation; Charging preprocessing subsystem (12-2-2) is to charging processing subsystem (12-2-1) output rate information; Accounting management subsystem (12-2-3) is exported the cost information that should collect the user to charging preprocessing subsystem (12-2-2) output unit rate information and overall system bandwidth information to aaa server (14).

Fig. 2 is the structure chart of charging preprocessing subsystem: charging preprocessing subsystem (12-2-2) is made of an external Erasable Programmable Read Only Memory EPROM of single-chip microcomputer (21) (EPROM) (22) and a random-access memory (ram) (23); The source of 4 input parameters that its work is required has two: come from the unit rate (24) and the overall system bandwidth (25) of accounting management subsystem (12-2-3), come from business model (26) and the maximum packet loss (27) of access point controller (12-1); Its 1 output result who calculates gained is rate (28), outputs to charging processing subsystem (12-2-1).

Fig. 3 is the charging flow figure of service communication: user terminal (11) initiates to insert request (30), and business model information and maximum packet loss information are sent to mobile switching centre (12); Rate (31) is calculated by mobile switching centre (12), then the rate that calculates is fed back to user terminal (11); User terminal (11) is accepted the judgement of rate (32), if do not accept this rate, then stops inserting request (33), if accept, then feeds back rate and receives information to mobile switching centre (12); Mobile switching centre (12) distributes bandwidth (34) for the user, and gives user terminal (11) with the feedback information of allocated bandwidth, starts charging timer pick up counting (35) simultaneously; After receiving bandwidth allocation information, user terminal (11) begins communication (36); When finishing communication (37), sends user terminal (11) sign off information; After sign off information is received by mobile switching centre (12), stop timing (38) immediately, and computational costs (39).

Consider the packet network of a discrete time model, might as well establish unit rate (24) V _Unit=1, the equal and opposite in direction of all grouping bags that transmit in the network.This packet network can carry 1000 grouping bags, i.e. overall system bandwidth (25) C=1000 in each time slot.Existing 1 user terminal (11) has moved a business, and in each time slot, this business can produce 0～10 grouping bag, establishes this numeral and is the stochastic variable B of independent binomial distribution (10,0.2), and promptly business model (26) is peak rate P _Max=10, speed distribution function f (p)=B (10,0.2).If this user terminal (11) has 100 grouping bags to need transmission and maximum packet loss (27) L that can tolerate _Max=1.0 * 10 ^-5

Charge system is carried out following concrete steps successively:

The first step, user terminal (11) initiates to insert request (30) to the access point controller (12-1) of mobile switching centre (12), and submits the business model (26) of requested service and the maximum packet loss (27) that can tolerate to;

Second step, charging preprocessing subsystem (12-2-2) at first obtains business model (26) and maximum packet loss (27) from access point controller (12-1), simultaneously from accounting management subsystem (12-2-3) acquiring unit rate (24) and overall system bandwidth (25), calculate rate (28) then, at last rate (28) is passed to charging processing subsystem (12-2-1) as output;

Wherein, to carry out the implication of needed 4 input parameters of work respectively as follows for charging preprocessing subsystem (12-2-2):

Unit rate (24) V _Unit, reflection be that mobile switching centre (12) uses the cost of being paid in the process of 1 grouping bag of 1 time slot bandwidth resources transmission, its formation comprises equipment depreciation cost, electricity power cost, personnel's emolument cost.

Overall system bandwidth (25) C is the grouping bag quantity that this packet network can transmit at most in a time slot simultaneously.

Business model (26) comprises parameter P _MaxAnd two information: parameter P of function f (p) _MaxNeed in the time slot to represent the maximum quantity of the grouping bag that transmits, be called peak rate; Needing the quantity of the grouping bag that transmits in time slot of function f (p) expression is the probability of p, is called speed distribution function.

Maximum packet loss (27) L _Max, refer to the maximum losing probability of the grouping bag that this business can be tolerated in transmission course.

Charging preprocessing subsystem (12-2-2) is carried out following operation successively after obtaining above-mentioned 4 input parameters:

Computation rate average μ promptly needs the par of the grouping bag that transmits in time slot:

$\mathrm{\&mu;}=\underset{p=0}{\overset{P_{\max }}{\mathrm{\&Sigma;}}}p\&CenterDot;f\left(p\right)=10\&times;0.2=2---\left(1\right)$

The computation rate variances sigma ², promptly need the variance of the grouping bag quantity transmitted in time slot:

${\mathrm{\&sigma;}}^2=\underset{p=1}{\overset{P_{\max }}{\mathrm{\&Sigma;}}}{(p-\mathrm{\&mu;})}^2\&CenterDot;f\left(p\right)=10\&times;0.2\&times;0.8=1.6---\left(2\right)$

Calculate minimum number of users N, promptly system according to peak rate distribute bandwidth resources the number of users that can support simultaneously:

$N=\frac{C}{P_{\max }}=\frac{1000}{10}=100---\left(3\right)$

C in the formula (3) is an overall system bandwidth, P _MaxBe peak rate;

Computing system packet loss L (n), grouping bag quantity promptly to be passed surpasses the grouping bag drop probability that overall system bandwidth caused:

$L\left(n\right)=\underset{x=C+1}{\overset{2C+1}{\mathrm{\&Sigma;}}}\left(\frac{x-C}{x}\right)\&times;\mathrm{normpdf}(x,\mathrm{n\&mu;},n{\mathrm{\&sigma;}}^2),n=N,N+1,...,C$

$=\underset{x=1000+1}{\overset{2\&times;1000+1}{\mathrm{\&Sigma;}}}\left(\frac{x-1000}{1000}\right)\&times;\mathrm{normpdf}(x,n\&times;2,n\&times;1.6),n=\mathrm{100,101},...,1000---\left(4\right)$

Normpdf (x, n μ, n σ in the formula (4) ²) expression average n μ, variance n σ ²Normal distribution get the probability density of x value.The variation tendency of the packet loss L of system (n) that calculates as shown in Figure 4.

Fig. 4 is the packet loss curve L of system: the number of users n of abscissa for inserting, ordinate is the packet loss L of system (n).When abscissa n when 100 change to 486, the packet loss curve L of system from 0 lentamente monotonic increase be 6.648 * 10 ^-5When abscissa n when 486 change to 1000, packet loss curve L is from 6.648 * 10 in system ^-5Promptly monotonic increase is 0.5.

Fig. 5 is the partial enlarged drawing of the packet loss curve L of system: the number of users n of abscissa for inserting, ordinate is the packet loss L of system (n).The packet loss curve L of system is slow monotonic increase, since 486 to 505 rapid monotonic increases then in 463～486 scopes earlier.Wherein, when n=482, L (482)=8.924 * 10 ^-6When n=483, L (483)=1.505 * 10 ^-5

Calculate thresholding number of users K, promptly meet the maximum of the number of users of maximum packet loss requirement:

$K=\underset{n}{\mathrm{Max}\arg }\{L\left(n\right)\&le;L_{\max }<L(n+1),n=N,N+1,...,C\}$

$=\mathrm{Max}\arg \{L\left(482\right)\&le;1\&times;{10}^{-5}<L\left(483\right),n=\mathrm{100,101},...,1000\}---\left(5\right)$

$=482$

L in the formula (5) _MaxBe maximum packet loss;

Calculate rate V, promptly at this business model and tolerable maximum packet loss thereof the rate that should collect

V in the formula (6) _UnitBe unit rate, operator

The smallest positive integral more than or equal to x is got in expression.

By the central-limit theorem in the probability theory as can be known: if stochastic variable is decided by the summation of a large amount of enchancement factors, wherein the independent effect of each enchancement factor is all very little to overall influence, and even relatively, this stochastic variable submits to normal distribution so.In the present invention, establish single certain professional peak rate P _MaxWith respect to overall system bandwidth C all is very little; And should the speed p of business in the practical communication process at 0～P _MaxBetween change according to speed distribution function f (p).Therefore, the grouping bag quantity sum of n independent identically distributed business is obeyed average n μ, variance n σ ²Normal distribution.

Charging preprocessing subsystem (12-2-2) outputs to charging processing subsystem (12-2-1) with rate (27) V that calculates.

The present invention compares with the disclosed a kind of floating rate charging method that quantizes based on communication quality of Chinese patent CN1431842, the latter's the concrete setting value as the desired reference value of the error rate of communication quality normative reference lacks the unified standard with general convincingness, often set numerical value as foundation, thereby have subjective random according to each one sensory evaluation.The formula of rate basis of the present invention (1)～(6) then are complete mathematical derivations based on business model and statistic multiplexing theory, and result of calculation is objective unique.Because the present invention does not need to provide according to each one sensory evaluation the normative reference of communication quality, so do not introduce any subjective factor.This is an important feature of the present invention and improvements.

In the 3rd step, charging processing subsystem (12-2-1) carries out rate with user terminal (11) to be consulted: charging processing subsystem (12-2-1) sends to user terminal (11) with rate information; Whether user terminal accepts the judgement of rate (32), if do not accept this rate, then stops inserting request (33), if accept this rate, then feeds back rate and receives information to the charging processing subsystem; After charging processing subsystem (12-2-1) receives that rate is received information, activate bandwidth Resource Scheduler (12-3) immediately and distribute bandwidth (34) for this service request, then bandwidth allocation information is fed back to user terminal (11), the timer that starts charging processing subsystem (12-2-1) simultaneously pick up counting (35).

So far, before this communication formally begins, because the charge system of network adopts formula (1)～(6) to calculate the rate that will collect and fed back to user terminal.The user can pre-estimate the expense that oneself will pay according to rate in this communication, and whether carries out this communication based on this decision.The present invention compares with the disclosed a kind of floating rate charging method that quantizes based on communication quality of Chinese patent CN1431842, the latter's shortcoming is that it is a kind of posterior charging way, before sign off, can't obtain assembly average and corresponding credit rating thereof, and then charge system can't be determined this pairing rate of conversing before sign off as the error rate of this communication quality metric.Can calculate the user terminal of rate and announcement before the communication beginning, this is another important feature of the present invention and improvements.

The 4th step, user terminal (11) begins communication (36) after receiving the bandwidth allocation information of charging processing subsystem (12-2-1) feedback, if certain time slot user service flow amount is then dynamically applied for extra bandwidth resources to bandwidth resources scheduler (12-3) greater than the bandwidth of distributing; If system also has remaining bandwidth, then bandwidth resources scheduler (12-3) is extra bandwidth application Resources allocation; Otherwise then user terminal (11) abandons the grouping bag that exceeds in this time slot; Up to sign off (37), user terminal (11) sends sign off information to charging processing subsystem (12-2-1).

Wherein, bandwidth resources scheduler (12-3) adopts following formula to calculate for the bandwidth resources of this service request distribution:

C is an overall system bandwidth in the formula (7), and K is the thresholding number of users, and D is for distributing bandwidth, operator

The maximum integer that is less than or equal to x is got in expression.

Need to prove that distributing bandwidth D=2 is that mobile switching centre is the special bandwidth resources of reserving of this business of user terminal, no longer distributes to other business before sign off.And in communication process, if some time slots, the number of packet that this service needed sends has surpassed distribution bandwidth D, then can be dynamically to the new bandwidth resources of mobile switching centre's provisional application; After the grouping bag of this time slot sends and finishes, discharge the interim bandwidth resources that increase immediately.Mobile switching centre as long as also have the remaining bandwidth resource in the system, should be this application Resources allocation all when the dynamic resource application of receiving user terminal as possible; If there has not been allowable resource in the system, the grouping bag that exceeds that then should this time slot of business can only abandon.

The 5th step, after charging processing subsystem (12-2-1) is received the sign off information of user terminal (11), at first stop timing (38), and concluding time of timer is deducted the time started obtain total call duration time, pass to accounting management subsystem (12-2-3) then according to rate and call duration time computational costs (39), and with the cost information that calculates.

Wherein, known users has 100 grouping bags to need to send, speed average μ=2 grouping bag/time slots, so generally speaking, its communication duration is 50 time slots, i.e. call duration time T=50.The formula of charging processing subsystem (12-2-1) computational costs is:

F＝VT＝2×50＝100 (8)

V is a rate in the formula (8), and T is a call duration time, and F is an expense.

After user terminal began communication, the computational methods of expense F=VT will encourage the user to avoid the waste of idle time slot as far as possible, make full use of bandwidth resources end of transmission as early as possible, as early as possible the bandwidth resource of release busy.Consider call duration time length calculation formula, do not send any data and but occupy the situation that Internet resources do not discharge significantly reducing the user.

In the 6th step, the cost information that accounting management subsystem (12-2-3) should be collected this service communication of this user passes to authentication, mandate and meter account server (14); Authentication, mandate and meter account server (14) were posted a bill by every month to the user, and the mode of being paid the fees to bank by user oneself is finally finished the charge to the user then.

In sum, the present invention is based on the network charge system of business model owing to taken all factors into consideration the factor of QoS parameter and bandwidth availability ratio, the charging that makes packet network becomes floating rate based on business model by the existing fixed rate, and the system of therefore chargeing will more become reasonable; Simultaneously,, not only can impel the continuous network optimization of Virtual network operator and technology upgrading, and can guide its business model of the spontaneous adjustment of user to realize cost minimization owing in the charging system, introduced the social estate system and the statistical multiplexing gain of packet loss.The present invention is one and had both encouraged operator to promote network capacity, encourages the user to save the compatible charge system of excitation of utilized bandwidth efficient transfer data again, helps good interaction long-term between user and the operator, realizes the maximization of network benefit.

Excitation to network has: impel network to improve constantly overall system bandwidth and transmittability, promptly promote the transmission supply capacity of network, help to augment social welfare.Because overall system bandwidth is big more, the gain of statistic multiplexing is just big more, and the number of users that network can insert simultaneously is just many more, and the total income that obtains is just big more.

Excitation to user terminal has: require suitable communication quality, rather than the highest communication quality of requirement simply, because the corresponding higher rate of higher communication quality; Reduce the sudden of transmission rate, send the data that finish as early as possible with even constant speed as far as possible, because help reducing user's expense expenditure itself like this.Meanwhile, user terminal is spontaneous reduces the sudden of service transmission rate, in fact is exactly traffic shaping, and this helps the dispatching management of network and the raising of resource utilization.

Claims (1)

1. network charge system based on business model, utilize the mobile switching centre of global system for mobile communications network and user terminal to hold consultation and service is provided, the cost information that the charge system of mobile switching centre should be collected the each communication of user terminal is reported to authentication, mandate and meter account server, is responsible for collecting the charges to the user by authentication, mandate and meter account server at last; Charge system is carried out following steps successively:

The first step, user terminal initiates to insert request to the access point controller of mobile switching centre, and submits the business model of requested service and the maximum packet loss that can tolerate to;

Second step, the charging preprocessing subsystem at first obtains business model and maximum packet loss from access point controller, from accounting management subsystem acquiring unit rate and overall system bandwidth, calculate rate then simultaneously, at last rate is passed to the charging processing subsystem as output;

In the 3rd step, charging processing subsystem and user terminal carry out rate to be consulted: the charging processing subsystem sends to user terminal with rate information; Whether user terminal accepts the judgement of rate, if do not accept this rate, then stops inserting request, if accept this rate, then feeds back rate and receives information to the charging processing subsystem; After the charging processing subsystem receives that rate is received information, activate the bandwidth Resource Scheduler immediately and distribute bandwidth for this service request, then bandwidth allocation information is fed back to user terminal, the timer that starts the charging processing subsystem simultaneously picks up counting;

In the 4th step, user terminal begins communication after receiving the bandwidth allocation information of charging processing subsystem feedback, if certain time slot user service flow amount is greater than the bandwidth of distributing, then to the dynamic extra bandwidth resources of application of bandwidth resources scheduler; If system also has remaining bandwidth, then the bandwidth resources scheduler is extra bandwidth application Resources allocation; Otherwise then user terminal abandons the grouping bag that exceeds in this time slot; Up to sign off, user terminal sends sign off information to the charging processing subsystem;

The 5th step, after the charging processing subsystem is received the sign off information of user terminal, at first stop timing, and concluding time of timer is deducted the time started obtain total call duration time, pass to the accounting management subsystem then according to rate and call duration time computational costs, and with the cost information that calculates;

In the 6th step, the cost information that the accounting management subsystem should be collected this service communication of this user passes to authentication, mandate and meter account server; Authentication, mandate and meter account server were posted a bill by every month to the user, and the mode of being paid the fees to bank by user oneself is finally finished the charge to the user then;

It is characterized in that:

In the charge system of mobile switching centre, increase by one by the external Erasable Programmable Read Only Memory EPROM of single-chip microcomputer and the charging preprocessing subsystem that random access memory constitutes; 4 required input parameters of this charging preprocessing subsystem work are respectively: come from the unit rate and the overall system bandwidth of accounting management subsystem, and the business model and the maximum packet loss that come from access point controller; Its rate of calculating gained outputs to the charging processing subsystem;

Business model in the described first step comprises two parameters: promptly needing the maximum quantity of the grouping bag that transmits in time slot is peak rate P _MaxWith the quantity of the grouping bag of needs transmission be that the probability of p is speed distribution function f (p);

Charging preprocessing subsystem in described second step adopts following computing formula:

Calculate that to need the par of the grouping bag that transmits in the time slot be the speed average:

$\mathrm{\&mu;}=\underset{p=0}{\overset{P\max }{\mathrm{\&Sigma;}}}p\&CenterDot;f\left(p\right)$

Calculate that to need the variance speed of the grouping bag quantity transmitted in the time slot be variance:

${\mathrm{\&sigma;}}^2=\underset{p=1}{\overset{P\max }{\mathrm{\&Sigma;}}}{(p-\mathrm{\&mu;})}^2\&CenterDot;f\left(p\right)$

Computing system according to peak rate distribute bandwidth resources the number of users that can support simultaneously be minimum number of users:

$N=\frac{C}{P_{\max }}$

C in the formula is an overall system bandwidth;

It is system's packet loss that computing system grouping bag quantity to be passed surpasses the grouping bag drop probability that overall system bandwidth caused:

$L\left(n\right)=\underset{x=C+1}{\overset{2C+1}{\mathrm{\&Sigma;}}}\left(\frac{x-C}{x}\right)\&CenterDot;\mathrm{normpdf}(x,\mathrm{n\&mu;},n{\mathrm{\&sigma;}}^2),$ n＝N，N+1，…，C

Normpdf in the formula (x, n μ, n σ ²) expression average n μ, variance n σ ²Normal distribution get the probability density of x value;

Calculate thresholding number of users K, promptly meet the maximum of the number of users of maximum packet loss requirement:

$K=\underset{n}{\mathrm{Max}\arg }\{L\left(n\right)\&le;L_{\max }<L(n+1),n=N,N+1,...,C\}$

L in the formula _MaxBe maximum packet loss;

Calculating at this business model and tolerable maximum packet loss thereof the rate that should collect:

V in the formula _UnitBe unit rate, operator

The smallest positive integral more than or equal to x is got in expression;

Bandwidth resources scheduler in described the 3rd step adopts the size of following formula dispensed bandwidth:

Charging processing subsystem in described the 5th step calculates the expense that these service communication needs of this user collect according to rate V and call duration time T:

F＝VT。

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