CN102547823A - Method and system for determining scheduling users during network simulation - Google Patents

Abstract

The invention discloses a method and a system for determining scheduling users during network simulation. The method comprises the following steps of: acquiring position information of users of finished simulation snapshots; determining users who are adjacent to all the users of the simulation snapshots from the users of the finished simulation snapshots respectively in allusion to all the users of the simulation snapshots according to the acquired position information; estimating historical transmission rates of all the users of the simulation snapshots based on the transmission rates of the determined users with adjacent positions; and determining the scheduling users of the simulation snapshots by using a proportional fairness scheduling strategy based on the channel quality indexes and the estimated historical transmission rates of all the users of the simulation snapshots. Due to the adoption of the scheme provided by the embodiment of the invention, the rationality of equalization consideration for throughput and fairness during simulation of a static system level is improved.

Description

Definite method and system of dispatched users in a kind of network simulation

Technical field

The present invention relates to the network simulation technical field in the wireless communication technology field, relate in particular to definite method and system of dispatched users in a kind of network simulation.

Background technology

Network simulation is the conventional means of carrying out the algorithm research and the network planning in the 3G system, is network configuration or the physical layer key technology that simulates simplification with computer means, and then investigates the performance of virtual network.Network simulation is the sand table rehearsal of a kind of network performance and efficiency of algorithm in itself.

Network simulation generally is divided into two types of link level (Link Level) emulation and system-level (System Level) emulation again: link level simulation mainly be to physical layer Radio Transmission Technology (as encode, interweave, modulation and spread spectrum etc.) carry out emulation; System-level emulation then mainly is to carry out emulation to the wireless access system that has network topology structure.

System-level emulation generally is divided into two kinds of STATIC SIMULATION and dynamic simulations again.Its difference is the notion that the time that incorporates usually in the dynamic simulation flows, and information such as so, the user moves in former and later two positions constantly, velocity variations, throughput up-down just can be noted exactly; Grade simulated then more so-called Monte Carlo (Monte Carlo) emulation of adopting of static system more; Monte-Carlo Simulation is the operation action of whole GSM to be regarded as the statistical average of the behavior sample that is showed in a plurality of time segments; Each time segment is called a snapshot, and it has embodied the metastable in a short time behavior of system.

For for the STATIC SIMULATION of Monte Carlo technique, each emulation is separate, that is the user distribution between twice emulation snapshot does not have related.Therefore on this meaning, it is generally acknowledged that STATIC SIMULATION does not have Memorability, dynamic simulation then is that Memorability is arranged.Normally, dynamic simulation is more complicated, and required simulation time is also longer.

Traditionally; Hardware resource and emulation required time from emulation is shared are considered; The planning software that uses in the engineering is often simulated fairly large network; The general STATIC SIMULATION mechanism that adopts, dynamic simulation mechanism then is mainly used in RRM (RRM) algorithm research, only simulates less network topology structure of scale even single website.

Insert in HSPA (High-Speed Packet Access), worldwide interoperability for microwave access WiMax (Worldwide Interoperability for Microwave Access), ultra three generations B3G (yondThird Generation), UMB, Long Term Evolution LTE (the Long Term Evolution) GSM in high-speed packet, Packet data service is mainly by the shared data channel bearing; With respect to traditional speech business, in the Packet data service on the shared channel, the channel resource of each CU is not pre-assigned, but system is shared between a plurality of users by certain scheduling strategy.

When weighing the performance of scheduling strategy, adopt two indexs usually, i.e. throughput and fairness.Dispatching algorithm is a characteristic of data service system, and purpose is the time-varying characteristics that make full use of channel, obtains multi-user diversity gain, to improve the throughput of system.Throughput is generally represented with the total amount of data of every sub-district transmission per unit of time.Fairness then is the user who considers all these request transmission, and whether everybody all enjoys certain service opportunity.Good dispatching algorithm should be taken into account the fairness that takies Internet resources between the whole throughput that can reach in sub-district and all users, obtains reasonable trading off.Briefly introduce several frequently seen scheduling strategy below.

Maximum signal interference ratio C/I scheduling strategy: if when channel condition is good, transmit data, just can improve transmission rate, reduce the redundancy of coding.Maximum C/I algorithm is exactly when selecting the dispatched users of transmission data; Only select the maximum user of C/I, good user is passing always promptly to let channel condition, when waiting its channel variation; The user who lets other channel improve again passes, and has so just made full use of the effect of multi-user diversity.

The polling dispatching strategy: when considering fairness, generally all the repeating query algorithm as standards of measurement.Each user occupies assignable time slot and power with identical probability.Therefore, from occupying the angle of these two kinds of resources, this dispatching algorithm is the most fair.During each the scheduling, identical with maximum C/I algorithm character, do not consider the situation that each user was scheduled in the past yet, we can say that these two kinds of dispatching algorithms all are memoryless.

Direct ratio equity dispatching strategy:, proposed a kind of fair dispatching algorithm of direct ratio that is called in order to carry out the compromise of throughput and fairness.At moment t, the historical average transmission rate of travelling carriage k is used R _k(t) (k=1, Λ, K) expression, the speed of its request transmission is used DRC _k(t) expression, then adopt following formula to confirm selected dispatched users:

$k=\arg \underset{j=1,\mathrm{\Λ},K}{\max }\left\{\frac{\mathrm{DR}{C}_j\left(t\right)}{R_j\left(t\right)}\right\};$

Can find out; Direct ratio equity dispatching strategy needs user's historical throughput information as input; On the other hand; Can find out that from top the description the memoryless property of the grade simulated technology of static system is difficult to carry out direct ratio equity dispatching strategy from having determined it in essence about the grade simulated background technology of static system.

The grade simulated technology of a kind of static system of available technology adopting direct ratio equity dispatching strategy does at present; System sorts each HSDPA user's of same sub-district pilot signal quality index from big to small, selects the HSDPA user who sets quantity in this sub-district to carry out transfer of data as the scheduling HSDPA user in certain proportion according to ranking results then.

This scheme has been ignored the consideration of direct ratio fair algorithm for historical throughput in fact; The index of a dimension of pilot channel quality that only is based in the STATIC SIMULATION to be easy to obtain is selected the user that is scheduled; In fact remain maximum C/I dispatching algorithm; Really do not embody the characteristics of direct ratio fair algorithm, just can't realize the reasonable balanced consideration of throughput and fairness yet.

Summary of the invention

The embodiment of the invention provides definite method and system of dispatched users in a kind of network simulation, in order to solve the reasonable balanced problem of considering that can't be implemented in grade simulated middle throughput of static system and fairness that exists in the prior art.

The embodiment of the invention provides definite method of dispatched users in a kind of network simulation, comprising:

Obtain the user position information of completed emulation snapshot;

According to the positional information of obtaining, from the user of completed emulation snapshot, determine the user approaching respectively with each customer location of this emulation snapshot;

Based on the approaching user's in the position of determining transmission rate, estimate each user's of this emulation snapshot historical transmission rate;

Based on each user's of this emulation snapshot the cqi and the historical transmission rate of estimation, use direct ratio equity dispatching strategy, confirm the dispatched users of this emulation snapshot.

The embodiment of the invention also provides in a kind of network simulation dispatched users fixed system really, comprising:

Acquisition module is used to obtain the user position information of completed emulation snapshot;

First determination module is used for from the user of completed emulation snapshot, determining the user approaching with each customer location of this emulation snapshot according to the positional information of obtaining respectively;

Estimation module is used for the transmission rate based on the approaching user in the position of determining, and estimates each user's of this emulation snapshot historical transmission rate;

Second determination module is used for based on each user's of this emulation snapshot the cqi and the historical transmission rate of estimation, uses direct ratio equity dispatching strategy, confirms the dispatched users of this emulation snapshot.

In the method that the embodiment of the invention provides, when carrying out network simulation, for completed emulation snapshot; The user position information and the transmission rate of each emulation snapshot have been stored; And when carrying out this emulation snapshot, according to the user position information of completed emulation snapshot, to each user of this emulation snapshot; Determine the user approaching respectively with each customer location of this emulation snapshot; And, estimate each user's of this emulation snapshot historical transmission rate, and based on each user's of this emulation snapshot the cqi and the historical transmission rate of estimation based on the approaching user's in the position of determining transmission rate; Use direct ratio equity dispatching strategy, confirm the dispatched users of this emulation snapshot.Because user's transmission rate is relevant with channel quality; And channel quality is relevant with the user position; So based on the approaching user's of the customer location of this emulation snapshot transmission rate; Can estimate this user's historical transmission rate more exactly, thereby can realize, use direct ratio equity dispatching strategy based on each user's of this emulation snapshot the cqi and the historical transmission rate of estimation; Confirm the dispatched users of this emulation snapshot, and then improve in static system is grade simulated throughput and the balanced reasonability of considering of fairness.

Description of drawings

One of flow chart of definite method of dispatched users in the network simulation that Fig. 1 provides for the embodiment of the invention;

In the network simulation that Fig. 2 provides for the embodiment of the invention two of the flow chart of definite method of dispatched users;

The dispatched users structural representation of fixed system really in the network simulation that Fig. 3 provides for the embodiment of the invention.

Embodiment

In order to provide raising rational implementation to throughput and the balanced consideration of fairness in static system is grade simulated; The embodiment of the invention provides definite method and system of dispatched users in a kind of network simulation; Below in conjunction with Figure of description the preferred embodiments of the present invention are described; Should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.And under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.

The embodiment of the invention provides definite method of dispatched users in a kind of network simulation, and is as shown in Figure 1, comprising:

Step S101, obtain the user position information of completed emulation snapshot.

The positional information that step S102, basis are obtained from the user of completed emulation snapshot, is determined the user approaching with each customer location of this emulation snapshot respectively.

Step S103, based on the approaching user's in the position of determining transmission rate, estimate each user's of this emulation snapshot historical transmission rate.

Step S104, based on each user's of this emulation snapshot the cqi and the historical transmission rate of estimation, use direct ratio equity dispatching strategy, confirm the dispatched users of this emulation snapshot.

Below in conjunction with accompanying drawing, method and system provided by the invention are described in detail with specific embodiment.

In the method that the embodiment of the invention provides,, all preserve the user position information and the transmission rate (transmission rate also promptly is equivalent to throughput in STATIC SIMULATION) of each emulation snapshot for completed each emulation snapshot, as shown in table 1:

Table 1:

Be the user position information and the transmission rate of completed n-1 emulation snapshot in the above-mentioned table 1, wherein, positional information is represented with the mode of coordinate, L _iThe number of users of representing the i time emulation snapshot.

Based on the user position information and the transmission rate of completed n-1 the emulation snapshot shown in the above-mentioned table 1, adopt definite method of the dispatched users that the embodiment of the invention provides, confirm the dispatched users of the n time emulation snapshot, as shown in Figure 2, detailed description as follows:

Step S201, obtain the user position information of completed n-1 emulation snapshot, promptly can from the above-mentioned table 1 of storage, obtain.

The positional information that step S202, basis are obtained to each user of the n time emulation snapshot, from the user of the n-1 time emulation snapshot, is determined the user approaching with each customer location of the n time emulation snapshot respectively.

Wherein, each number of users and each user position information for the n time emulation snapshot can adopt existing network simulation technology to confirm, no longer are described in detail at this.

In the embodiment of the invention,, following several kinds of concrete modes are proposed for this step:

First kind of mode: for each user of the n time emulation snapshot, from the user of each emulation snapshot of completed n-1 emulation snapshot, determine and the immediate user of this customer location, specifically adopt following formula to confirm:

$U_{i,j}=\arg \underset{l=1,\mathrm{\Λ},L_i}{\min }\left(\sqrt{{(x_{n,j}-x_{i,l})}^2+{(y_{n,j}-y_{i,l})}^2}\right);$

Wherein, U _{I, j}For in the user of the i time emulation snapshot, that determine and j the immediate user of customer location the n time emulation snapshot; (x _{N, j}, y _{N, j}) be j user's of the n time emulation snapshot coordinate; (x _{I, l}, y _{I, l}) be l user's of the i time emulation snapshot coordinate.

Promptly for each user of the n time emulation snapshot, the each emulation snapshot in corresponding n-1 the emulation snapshot is determined one and the immediate user of this customer location respectively, determines n-1 and the immediate user of this customer location altogether.

The second way:, from the user of completed n-1 emulation snapshot, determine user with the approaching preceding setting quantity of this customer location for each user of the n time emulation snapshot; Be about to whole users of completed the n-1 time emulation snapshot, put in order from small to large, determine the user of the preceding setting quantity of this order according to position distance with this user of the n time emulation snapshot.

Wherein, setting quantity can be provided with experience according to actual needs, for example, can also can be 1 for n-1, and being 1 with setting quantity is example, specifically adopts following formula to confirm:

$U_{n,j}=\arg \underset{i=1,\mathrm{\Λ},n-1_i}{\min }\underset{l=1,\mathrm{\Λ},L_i}{\min }\left(\sqrt{{(x_{n,j}-x_{i,l})}^2+{(y_{n,j}-y_{i,l})}^2}\right);$

Wherein, U _{N, j}For in the user of the n-1 time emulation snapshot, that determine and j the immediate user of customer location the n time emulation snapshot; (x _{N, j}, y _{N, j}) be j user's of the n time emulation snapshot coordinate; (x _{I, l}, y _{I, l}) be l user's of the i time emulation snapshot coordinate.

Promptly for each user of the n time emulation snapshot, determine user with the approaching setting quantity of this customer location.

The third mode:, among the user of an emulation snapshot from completed n-1 emulation snapshot, determine the immediate user of this customer location with the n time emulation snapshot for each user of the n time emulation snapshot; Promptly earlier from n-1 emulation snapshot, select an emulation snapshot, and from the user of the emulation snapshot of selection, determine the immediate user of this customer location with the n time emulation snapshot.

Emulation snapshot of selection that specifically can be at random also can be selected an emulation snapshot of appointment, like a preceding emulation snapshot, is that the i time emulation snapshot is example with selection result, specifically adopts following formula to confirm:

$U_{i,j}=\arg \underset{l=1,\mathrm{\Λ},L_i}{\min }\left(\sqrt{{(x_{n,j}-x_{i,l})}^2+{(y_{n,j}-y_{i,l})}^2}\right);$

Wherein, U _{I, j}For in the user of the i time emulation snapshot, that determine and j the immediate user of customer location the n time emulation snapshot; (x _{N, j}, y _{N, j}) be j user's of the n time emulation snapshot coordinate; (x _{I, l}, y _{I, l}) be l user's of the i time emulation snapshot coordinate.

Promptly, from the user of a selected emulation snapshot, determine and immediate 1 user of this customer location of the n time emulation snapshot for each user of the n time emulation snapshot.

Step S203, obtain the approaching user's in the position determined among the above-mentioned steps S202 transmission rate, promptly can from the above-mentioned table 1 of storage, obtain.

Step S204, based on the approaching user's in the position that obtains transmission rate; Estimate each user's of the n time emulation snapshot historical transmission rate; Corresponding with three kinds of modes confirming the user that the position is approaching among the above-mentioned steps S202, the estimation mode of the following three kinds of historical transmission rates of proposition in this step:

First kind of mode: corresponding with the approaching user's in above-mentioned first kind of definite position mode; Each user for the n time emulation snapshot; Confirm in completed n-1 the emulation snapshot Mean Speed with the immediate user's of this customer location transmission rate; And, specifically adopt following formula to confirm with the historical transmission rate of this Mean Speed as this user's estimation:

$R_{n,j}=\underset{i=1,\mathrm{\Λ},n-1}{\mathrm{\Σ}}{R}_{i,j}/(n-1);$

Wherein, R _{N, j}It is j user's of the n time emulation snapshot the historical transmission rate of estimation; R _{I, j}Be user U _{I, j}Transmission rate.

The second way: corresponding with the approaching user's in above-mentioned second kind of definite position mode; Each user for the n time emulation snapshot; Confirm the user's of this setting quantity the Mean Speed of transmission rate; And, specifically adopt following formula to confirm with the historical transmission rate of this Mean Speed as this user's estimation:

$R_{n,j}=\underset{i=1,\mathrm{\Λ},m}{\mathrm{\Σ}}{R}_i/m;$

Wherein, R _{N, j}It is j user's of the n time emulation snapshot the historical transmission rate of estimation; M is for setting quantity; R _iTransmission rate for i user among the approaching user in m the position of determining.

If this setting quantity is 1, then R _{N, j}Be user U _{N, j}Transmission rate.

The third mode: corresponding with the above-mentioned mode that the third confirms the user that the position is approaching; Each user for the n time emulation snapshot; With that determine and the historical transmission rate of the transmission rate immediate user of this customer location, specific as follows as this user's estimation:

R _n，j＝R _i，j；

Wherein, R _{N, j}It is j user's of the n time emulation snapshot the historical transmission rate of estimation; R _{I, j}Be user U _{I, j}Transmission rate.

Step S205, confirm each user's of the n time emulation snapshot cqi; In the heterogeneous networks analogue system of the real network that is directed against different systems; This cqi has different expression modes; For example, for the HSPA of 3GPP standard, the network (WSN) emulation system of LTE system, cqi can be signal interference ratio C/I; For the network (WSN) emulation system (EV-DO analogue system, UMB analogue system) of 3GPP2 standard, cqi can be the request transmission rate.

The concrete of cqi confirms that method can adopt the whole bag of tricks in the existing network emulation technology, no longer is described in detail at this.

Step S206, based on each user's of the n time emulation snapshot the cqi and the historical transmission rate of estimation, use direct ratio equity dispatching strategy, confirm the dispatched users of this emulation snapshot.

To determine 1 dispatched users is example, specifically adopts following formula to confirm:

$k_n=\mathrm{Arg}\underset{j=1,\mathrm{\Λ},L_n}{\mathrm{Max}}\left(\frac{{\mathrm{CIR}}_{n,j}}{R_{n,j}}\right);$ Perhaps

$k_n=\arg \underset{j=1,\mathrm{\Λ},L_n}{\max }\left(\frac{{\mathrm{DRC}}_{n,j}}{R_{n,j}}\right);$

Wherein, k _nDispatched users for the n time emulation snapshot determining; CIR _{N, j}Be j user's of the n time emulation snapshot C/I; DRC _{N, j}It is j user's of the n time emulation snapshot request transmission rate; R _{N, j}It is j user's of the n time emulation snapshot the historical transmission rate of estimation; L _nIt is the number of users of the n time emulation snapshot.

Step S207, after determining the dispatched users of the n time emulation snapshot through above-mentioned steps S201-step S206, then carry out follow-up simulation process according to the dispatched users of confirming, no longer be described in detail at this; And after the n time emulation snapshot accomplished, each user position information and the transmission rate of storing the n time emulation snapshot.

Based on same inventive concept; Definite method of dispatched users in the network simulation that provides according to the above embodiment of the present invention, correspondingly, another embodiment of the present invention also provides in a kind of network simulation dispatched users fixed system really; Its structural representation is as shown in Figure 3, specifically comprises:

Acquisition module 301 is used to obtain the user position information of completed emulation snapshot;

First determination module 302 is used for from the user of completed emulation snapshot, determining the user approaching with each customer location of this emulation snapshot according to the positional information of obtaining respectively;

Estimation module 303 is used for the transmission rate based on the approaching user in the position of determining, and estimates each user's of this emulation snapshot historical transmission rate;

Second determination module 304 is used for based on each user's of this emulation snapshot the cqi and the historical transmission rate of estimation, uses direct ratio equity dispatching strategy, confirms the dispatched users of this emulation snapshot.

Preferable, first determination module 302 specifically is used for each user for this emulation snapshot, from the user of completed each emulation snapshot, determines and the immediate user of this customer location;

Estimation module 303; Specifically be used for each user for this emulation snapshot; Confirm in completed each time emulation snapshot the Mean Speed with the immediate user's of this customer location transmission rate, and with the historical transmission rate of this Mean Speed as this user's estimation.

Preferable, first determination module 302 specifically is used for each user for this emulation snapshot, from the user of completed emulation snapshot, determines the user with the approaching preceding setting quantity of this customer location;

Estimation module 303 specifically is used for each user for this emulation snapshot, confirms the user's of this setting quantity the Mean Speed of transmission rate, and with the historical transmission rate of this Mean Speed as this user's estimation.

Preferable, first determination module 302 specifically is used for each user for this emulation snapshot, from the user of a completed emulation snapshot, determines and the immediate user of this customer location;

Estimation module 303 specifically is used for each user for this emulation snapshot, with that determine and the historical transmission rate of the transmission rate immediate user of this customer location as this user's estimation.

Preferable, second determination module 304 specifically is used for using direct ratio equity dispatching strategy based on each user's of this emulation snapshot the signal interference ratio C/I and the historical transmission rate of estimation, confirms the dispatched users of this emulation snapshot; Perhaps

Based on each user's of this emulation snapshot the request transmission rate and the historical transmission rate of estimation, use direct ratio equity dispatching strategy, confirm the dispatched users of this emulation snapshot.

In sum, the scheme that the embodiment of the invention provides comprises: the user position information of obtaining completed emulation snapshot; And,, from the user of completed emulation snapshot, determine the user approaching respectively with each customer location of this emulation snapshot to each user of this emulation snapshot according to the positional information of obtaining; And, estimate each user's of this emulation snapshot historical transmission rate based on the approaching user's in the position of determining transmission rate; And, use direct ratio equity dispatching strategy based on each user's of this emulation snapshot the cqi and the historical transmission rate of estimation, confirm the dispatched users of this emulation snapshot.The scheme that adopts the embodiment of the invention to provide has improved in static system is grade simulated throughput and the balanced reasonability of considering of fairness.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims (10)

1. definite method of dispatched users in the network simulation is characterized in that, comprising:

Obtain the user position information of completed emulation snapshot;

According to the positional information of obtaining, from the user of completed emulation snapshot, determine the user approaching respectively with each customer location of this emulation snapshot;

Based on the approaching user's in the position of determining transmission rate, estimate each user's of this emulation snapshot historical transmission rate;

Based on each user's of this emulation snapshot the cqi and the historical transmission rate of estimation, use direct ratio equity dispatching strategy, confirm the dispatched users of this emulation snapshot.

2. the method for claim 1 is characterized in that, to each user of this emulation snapshot, from the user of completed emulation snapshot, determines the user approaching with each customer location of this emulation snapshot respectively, is specially:

For each user of this emulation snapshot, from the user of completed each emulation snapshot, determine and the immediate user of this customer location;

Estimate each user's of this emulation snapshot historical transmission rate, specifically comprise:

For each user of this emulation snapshot, confirm in completed each time emulation snapshot the Mean Speed with the immediate user's of this customer location transmission rate, and with the historical transmission rate of said Mean Speed as this user's estimation.

3. the method for claim 1 is characterized in that, to each user of this emulation snapshot, from the user of completed emulation snapshot, determines the user approaching with each customer location of this emulation snapshot respectively, is specially:

For each user of this emulation snapshot, from the user of completed emulation snapshot, determine user with the approaching preceding setting quantity of this customer location;

Estimate each user's of this emulation snapshot historical transmission rate, specifically comprise:

For each user of this emulation snapshot, confirm the user's of said setting quantity the Mean Speed of transmission rate, and with the historical transmission rate of said Mean Speed as this user's estimation.

4. the method for claim 1 is characterized in that, to each user of this emulation snapshot, from the user of completed emulation snapshot, determines the user approaching with each customer location of this emulation snapshot respectively, is specially:

For each user of this emulation snapshot, from the user of a completed emulation snapshot, determine and the immediate user of this customer location;

Estimate each user's of this emulation snapshot historical transmission rate, specifically comprise:

For each user of this emulation snapshot, with that determine and the historical transmission rate of the transmission rate immediate user of this customer location as this user's estimation.

5. like the arbitrary described method of claim 1-4, it is characterized in that said cqi is signal interference ratio C/I or asks transmission rate.

6. dispatched users fixed system really in the network simulation is characterized in that, comprising:

Acquisition module is used to obtain the user position information of completed emulation snapshot;

First determination module is used for from the user of completed emulation snapshot, determining the user approaching with each customer location of this emulation snapshot according to the positional information of obtaining respectively;

Estimation module is used for the transmission rate based on the approaching user in the position of determining, and estimates each user's of this emulation snapshot historical transmission rate;

Second determination module is used for based on each user's of this emulation snapshot the cqi and the historical transmission rate of estimation, uses direct ratio equity dispatching strategy, confirms the dispatched users of this emulation snapshot.

7. system as claimed in claim 6 is characterized in that, said first determination module specifically is used for each user for this emulation snapshot, from the user of completed each emulation snapshot, determines and the immediate user of this customer location;

Said estimation module; Specifically be used for each user for this emulation snapshot; Confirm in completed each time emulation snapshot the Mean Speed with the immediate user's of this customer location transmission rate, and with the historical transmission rate of said Mean Speed as this user's estimation.

8. system as claimed in claim 6 is characterized in that, said first determination module specifically is used for each user for this emulation snapshot, from the user of completed emulation snapshot, determines the user with the approaching preceding setting quantity of this customer location;

Said estimation module specifically is used for each user for this emulation snapshot, confirms the user's of said setting quantity the Mean Speed of transmission rate, and with the historical transmission rate of said Mean Speed as this user's estimation.

9. system as claimed in claim 6 is characterized in that, said first determination module specifically is used for each user for this emulation snapshot, from the user of a completed emulation snapshot, determines and the immediate user of this customer location;

Said estimation module specifically is used for each user for this emulation snapshot, with that determine and the historical transmission rate of the transmission rate immediate user of this customer location as this user's estimation.

10. system as claimed in claim 6; It is characterized in that said second determination module specifically is used for based on each user's of this emulation snapshot the signal interference ratio C/I and the historical transmission rate of estimation; Use direct ratio equity dispatching strategy, confirm the dispatched users of this emulation snapshot; Perhaps

Based on each user's of this emulation snapshot the request transmission rate and the historical transmission rate of estimation, use direct ratio equity dispatching strategy, confirm the dispatched users of this emulation snapshot.

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