CN102821149A - Method and device for selecting service providing entity - Google Patents

Method and device for selecting service providing entity Download PDF

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Publication number
CN102821149A
CN102821149A CN2012102763554A CN201210276355A CN102821149A CN 102821149 A CN102821149 A CN 102821149A CN 2012102763554 A CN2012102763554 A CN 2012102763554A CN 201210276355 A CN201210276355 A CN 201210276355A CN 102821149 A CN102821149 A CN 102821149A
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service
entity
user
provides
path
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李素粉
张云勇
房秉毅
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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Abstract

The invention provides a method and device for selecting a service providing entity. The method comprises the following steps of: receiving a service requirement message sent by a user, wherein the service requirement message comprises the type and the quality of the service required by the user and the position information of the user; determining at least two service providing entities to be selected according to the type of the service required by the user; obtaining the position information of the service providing entities to be selected and the quality of the service provided by the service providing entities to be selected; obtaining the route length from the service providing entities to be selected to the user according to the position information of the service providing entities to be selected and the position information of the user; and if the quality of the service provided by the service providing entities to be selected accords with the quality of the service required by the user, determining the selected service providing entity according to the route length from the service providing entities to be selected to the user, and enabling the selected service providing entity to provide corresponding service to the user.

Description

Service provides entity selection method and device
Technical field
The present invention relates to the service dispatch technology, relate in particular to a kind of service entity selection method and device are provided, belong to communication technical field.
Background technology
Under the cloud network environment, some large enterprises make the transition traditional business one after another to cloud service, set up enterprise's cloud, form the cloud service resource pool.For example, Amazon is set up special data center, to user and developer storage server, bandwidth and cpu resource etc. is provided with the form of cloud service.Along with cloud computing is used at the degree of depth and the range of enterprise, a large amount of cloud services have been expedited the emergence of.With the telecommunications industry is example; Telecom operation enterprise carries out cloud computing correlative study and application one after another both at home and abroad; Form gradually infrastructure promptly serve (Infrastructure as a Service, IaaS), platform promptly serve (Platform as a Service, PaaS) with software promptly serve (Software as a Service; SaaS) the Service Source pond of three levels, Service Source will present scale and commercialization characteristics.In this case, in the face of the huge day by day cloud service resource pool of scale, the effective service system of selection is significant for the validity that improves the services selection result.
In the prior art; Normally from the demand of user to service, based on the service quality of user's request (Quality of Service, QoS); From the cloud service resource pool, select proper service, provide entity selected service to be provided to the user by corresponding service.
Scale gradually along with Service Source; Provide a plurality of services of same type of service to provide entity to disperse to be arranged on different physical locations usually; Therefore select which service to provide entity that service is provided; Provide except that having influence on the QoS of service, also can have influence on resource utilization and performance of cloud network etc.But based on method for service selection of the prior art, only can ensure to the user provides the service that meets its QoS demand, and can't realize the optimization utilization of Internet resources.
Summary of the invention
To the defective that exists in the prior art, the present invention provides a kind of service that entity selection method and device are provided, and when satisfying user QoS demand in order to be implemented in, optimizes and utilizes Internet resources.
According to an aspect of the present invention, provide a kind of service that entity selection method is provided, comprising:
Receive the service request information that the user sends, said service request information comprises the service quality of said user's acquisition request service, and said user position information;
According to the COS of said user's acquisition request service, confirm that at least two services to be selected provide entity;
Obtain the positional information that service said to be selected provides entity, and service said to be selected provides entity that the service quality of service is provided;
According to service said to be selected the positional information and the said user position information of entity are provided, obtain the path that service said to be selected provides the said user of physical distance;
If service said to be selected provides entity that the service quality of service is provided; Satisfy the service quality of said user's acquisition request service; The said user's of physical distance path then is provided according to service said to be selected; Confirm that the service of selecting provides entity, provides entity to said user corresponding service to be provided with the service by said selection.
According to a further aspect in the invention, provide a kind of service that the entity selection device is provided, comprising:
The services request receiver module is used to receive the service request information that the user sends, and said service request information comprises the service quality of said user's acquisition request service, and said user position information;
The type screening module is used for the COS according to said user's acquisition request service, confirms that at least two services to be selected provide entity;
The information on services acquisition module is used to obtain the positional information that service said to be selected provides entity, and service said to be selected provides entity that the service quality of service is provided;
The routing information acquisition module is used for providing according to service said to be selected the positional information and the said user position information of entity, obtains the path that service said to be selected provides the said user of physical distance;
Select module; Be used for if service said to be selected provides entity that the service quality of service is provided; Satisfy the service quality of said user's acquisition request service; The said user's of physical distance path then is provided according to service said to be selected, confirms that the service of selecting provides entity, provides entity to said user corresponding service to be provided with the service by said selection.
Based on service of the present invention entity selection method and device are provided,, confirm that service to be selected provides entity through COS based on the service of user's acquisition request; The positional information and the user position information of entity are provided based on service to be selected; Calculate the path that service respectively to be selected provides the physical distance user; And combine path, respectively service to be selected provides the QoS that entity provides service and the QoS of user's acquisition request service; Comprehensive selection goes out to be used to the user provides the service of respective service that entity is provided, thereby can either satisfy user's QoS demand, also through combining service to provide the distance between entity and the user to carry out selection; The balanced to a certain extent service of being disposed in the network provides the load of entity; And when the short service of preferential selection path provided entity, also having improved service provided efficient, and having reduced to the user provides the required Internet resources that take of service etc.Therefore, realized when satisfying user QoS demand, optimized and utilize Internet resources.
Description of drawings
Fig. 1 provides the schematic flow sheet of entity selection method for the service of one embodiment of the invention.
Fig. 2 provides the schematic flow sheet of entity selection method for the service of another embodiment of the present invention.
Fig. 3 provides the structural representation of entity selection device for the service of one embodiment of the invention.
Embodiment
Embodiment one
The service of present embodiment provides entity selection method for example to provide the entity selection device to carry out by a service; This service provides the entity selection device both can independently be arranged in the network; Also can with the integrated setting of any conventional network equipment, only need to satisfy can receive the information that the user sends and the service that can get access in the network provides the relevant information of entity to get final product.Hereinafter, provide the entity selection device independently to be arranged in the cloud network, be connected, and can conduct interviews to the cloud service resource pool and be example, provide instance method to be elaborated the service of present embodiment with the user with service.
Fig. 1 provides the schematic flow sheet of entity selection method for the service of one embodiment of the invention.As shown in Figure 1, this service provides entity selection method may further comprise the steps:
Step 101 receives the service request information that the user sends, and said service request information comprises the service quality of said user's acquisition request service, and said user position information;
Step 102 according to the COS of said user's acquisition request service, confirms that at least two services to be selected provide entity;
Step 103 is obtained the positional information that service said to be selected provides entity, and service said to be selected provides entity that the service quality of service is provided;
Step 104 provides the positional information and the said user position information of entity according to service said to be selected, and obtains the path that service said to be selected provides the said user of physical distance;
Step 105; If service said to be selected provides entity that the service quality of service is provided; Satisfy the service quality of said user's acquisition request service; The said user's of physical distance path then is provided according to service said to be selected, confirms that the service of selecting provides entity, provides entity to said user corresponding service to be provided with the service by said selection.
For the service of more clearly describing present embodiment provides entity selection method, at first as follows to the explanation of cloud service resource pool:
The cloud service resource pool comprises a plurality of cloud services, and records service function relevant information, the quality relevant information of each cloud service, and with corresponding service the entity relevant information is provided.Wherein, the service function relevant information for example comprises COS; The quality relevant information is a qos parameter for example, comprises the indexs such as time of implementation, expense and reliability of service, and the corresponding QoS index of different services maybe be different; Service provides the entity relevant information for example to comprise, the physical location that provides the service of this cloud service that entity is provided, and the title of the unit of providing of this cloud service etc.
Particularly; During the service of user's acquisition request; Provide the entity selection device to send service request information to service, this service request information comprises the service quality of acquisition request service, and user position information (for example being user's physical location) and ID etc.Wherein, the quantity of user's acquisition request service can not limit among the present invention for one or more.The quantity of serving with user's acquisition request in the present embodiment is that one situation is that example describes, and in the subsequent implementation example, the quantity that user's acquisition request is served is a plurality of situation, describes.
After service provides the entity selection device to receive service request information; The COS that at first carries according to service request information; From the cloud service resource pool, filter out the cloud service of same type; The service that the cloud service that filters out is corresponding provides entity as service to be selected entity to be provided, and writes down physical location and qos parameter (being the qos parameter of cloud service) that service respectively to be selected provides entity, to carry out subsequent treatment.
More particularly, if get access to a service to be selected entity is provided, then can directly it be chosen as and be used for providing the service of service that entity is provided to the user.If get access to J service to be selected entity (J for more than or equal to 2 integer) is provided, then respectively to J service to be selected provide in the entity j (j=1 ..., service J) to be selected provides entity, carries out following operation:
According to j service to be selected the physical location of entity and user's physical location are provided, calculating j service to be selected provides the path between entity and the user (to be designated as D j), for example be 10km; Wherein, the account form of path can adopt any distance function of the prior art to realize, does not limit here;
Calculating j service to be selected provides entity that the QoS difference of service with user's requested service is provided, and judges according to the QoS difference that is obtained j service to be selected provides the QoS of service that entity provides whether can satisfy user's QoS demand; More particularly, the QoS of user's requested service can represent through one or more qos parameters, for example comprises that first qos parameter (is designated as Q 0 1) and second qos parameter (be designated as Q 0 2), wherein: Q 0 1For example for the time of implementation is 5S, Q 0 2Be 0.9 for example for reliability.Service provides the entity selection device to provide the corresponding qos parameter of entity from j service to be selected, and extracts and Q 0 1Corresponding Q 1, and and Q 0 2Corresponding Q 2, Q wherein 1For example for the time of implementation is 6S, Q 2Be 0.8 for example for reliability.Calculate Q 1With Q 0 1Difference (be 1S for example, be designated as 1), and Q 2With Q 0 2Difference (for example being-0.1).Service provides and is provided with a plurality of QoS threshold values that are directed against different qos parameters respectively in the entity selection device in advance; QoS threshold value corresponding to each qos parameter perhaps only is set; Only to be provided with one is example, and this threshold value is 0 or near 0 minimum numerical value (for example being 0.01).With the difference of first qos parameter, and the difference of second qos parameter, compare with preset threshold value respectively, and combine the character of first qos parameter and second qos parameter, judge whether to satisfy the QoS demand.
Wherein, the character of first qos parameter and second qos parameter is meant that the numerical value of qos parameter is to be the bigger the better, should be more little more.For example, when first qos parameter was the time of implementation, numerical value was more little good more, for this type qos parameter, when then satisfying difference smaller or equal to predetermined threshold value, thought and satisfied the QoS demand; When second qos parameter was availability, numerical value was the bigger the better, and for this type qos parameter, when then satisfying difference more than or equal to predetermined threshold value, thought and satisfied the QoS demand.
And when user's QoS demand related to a plurality of qos parameter, standard that can accord with Q oS demand was set to each qos parameter and all satisfies the QoS demand, also can be that wherein the part qos parameter satisfies the QoS demand, does not limit here.
By the way, can filter out the service to be selected that to satisfy user QoS demand entity is provided.Service whole to be selected for filtering out provides entity, get access to each self-corresponding path after, for example will be wherein the service selected of the minimum conduct of path entity is provided, to provide entity service to be provided to the user by selected service.Wherein, service provides the entity selection device both can provide entity corresponding identification (for example being the IP address) to return to the user selected service, directly provides entity to obtain service from service by the user according to this sign; Service provides the entity selection device also can directly notify selected service to provide entity to the user service to be provided; Or user's service request information is sent to selected service provides entity; Provide entity to respond user's service request information by selected service, service is provided to the user.
Service based on present embodiment provides entity selection method, through the COS based on the service of user's acquisition request, confirms that service to be selected provides entity; The positional information and the user position information of entity are provided based on service to be selected; Calculate the path that service respectively to be selected provides the physical distance user; And combine path, respectively service to be selected provides the QoS that entity provides service and the QoS of user's acquisition request service; Comprehensive selection goes out to be used to the user provides the service of respective service that entity is provided, thereby can either satisfy user's QoS demand, also through combining service to provide the distance between entity and the user to carry out selection; The balanced to a certain extent service of being disposed in the network provides the load of entity; And when the short service of preferential selection path provided entity, also having improved service provided efficient, and having reduced to the user provides the required Internet resources that take of service etc.Therefore, realized when satisfying user QoS demand, optimized and utilize Internet resources.
Embodiment two
On the basis of the foregoing description, in the present embodiment, the situation to a plurality of services of user's while acquisition request is elaborated.
Fig. 2 provides the schematic flow sheet of entity selection method for the service of another embodiment of the present invention.As shown in Figure 2, this service provides entity selection method may further comprise the steps:
Step 201; Service provides the entity selection device to receive the service request information that the user sends; This service request information comprises at least two services that the user asks; And COS and the QoS corresponding with each service, also comprise user's requested service flow process, wherein this service procedure comprises the execution order of at least two services that the user asks and respectively whether has information interaction between the service;
Particularly, for example represent user's requested service quantity with I, I is a positive integer, in the present embodiment, describes more than or equal to 2 situation to I.The i that the user asks (i=1 ..., I) service for example is designated as S i, with vectorial Q iThe S of user expectation is described iQoS, Q i=(Q 1, Q 2..., Q k..., Q K), promptly the user describes the QoS of the service of desired acquisition through K QoS index, and K is a positive integer, alternatively, Q 1Be the QoS index that the user is concerned about most, Q 2Take second place, by that analogy.More particularly, these QoS indexs for example comprise time of implementation, expense, availability, reliability and the disposal ability etc. of service.
Step 202, service provides the entity selection device from the cloud service resource pool, to choose, and COS provides entity with the identical service of arbitrary service of user's request, and the service to be selected that generates each service that corresponds respectively to user's request provides entity sets;
Particularly, for example with Site i=(Site I, 1, Site I, 1..., Site I, j..., Site I, J) represent that the service to be selected of i service provides entity sets, wherein J is that service to be selected provides in the entity sets, service to be selected provides the quantity of entity sets, Site I, jBe S set ite iIn j service to be selected entity is provided.
Step 203, service provide the entity selection device to service to be selected entity sets to be provided, according to the path computation rule that presets, and in conjunction with service procedure, calculating path length;
Particularly, the path computation rule that presets for example is:
F = Distf ( Σ j = 1 J Y i , j · Site i , j , UserSite ) , I = 1 1 I Σ i = 1 I Distf ( Σ j = 1 J Y i , j · Site i , j , UserSite ) + Σ i = 1 I - 1 Z i , j · Distf ( Σ j = 1 J Y i , j · Site i , j , Σ j = 1 J Y i , j · Site i + 1 , j ) , I > 1
Wherein, (a, b) for being used to calculate the distance function of the distance between a, b at 2, UserSite is user's position to Distf, Y I, jBe the 0-1 decision variable, as corresponding Site I, jWhen the service that is directed against for this calculating provides entity, Y then I, j=1, otherwise Y I, j=0.Z I, jBe used for expression service S I, jAnd S I+1, jWhether be that series relationship (promptly provides service S I, jService provide entity with provide the service S I+1, jService provide between the entity and to have communication, service S for example is provided I, jService provide entity will serve S I, jOutput be sent to provide the service S I+1, jService entity is provided, with as the service S I+1, jInput), if series relationship, then Z I, j=1, otherwise Z I, j=0.Can find out that through above-mentioned path computation rule when I=1, service to be selected provides the said user's of physical distance path, be that service respectively to be selected provides the distance between entity and the user; As I>1 the time; Obtain the path that service to be selected provides the said user of physical distance; Need obtain service respectively to be selected the distance between entity and the user (being first via electrical path length) is provided; And the difference of adjacent execution in service procedure service corresponding wait to select to serve the distance (i.e. second path) that provides between the entity; The final service to be selected that obtains provides the said user's of physical distance path, and the average of the distance between entity and the user for example is provided for service respectively to be selected, the to be selected service corresponding with the service of adjacent execution provide between the entity apart from sum.
Step 204, service provide the entity selection device based on the preference pattern of constructing in advance, and in conjunction with QoS and path, selecting provides entity with the corresponding service of each service of user's request.
Particularly, for example at first define an object vector Obj.Object vector Obj is an one-dimensional vector that is made up of a plurality of target item, is described below:
Obj=(Obj 1,Obj 2,Obj 3,…,Obj o,…,Obj O)
Wherein: Obj oThe expression target factor, o=1,2,3 ..., O, wherein O is a natural number.
In the technical scheme of present embodiment, comprise the target factor in the object vector simultaneously corresponding to the different QoS index, also comprise the target factor corresponding to path.
In addition; Once the service provide in the entity selection; The user is for the preference degree of different QoS index and maybe be different to the degree that stresses of QoS index and path; For example: user's request " expense is low more good more under the condition that satisfies the service execution time " shows that the priority level of " time of implementation " is higher than " execution cost ".To this situation, go back a target weight vector of definable ObjWeight, with indication consideration weight to the different target factor in selection course.Target weight vector ObjWeight is an one-dimensional vector that is made up of a plurality of weight factors, is described below:
ObjWeight=(α 1,α 2,α 3，...,α w,…,α W)
Wherein: α wThe expression weight factor, w=1,2,3 ..., W, wherein W is a natural number; 0≤α wAnd satisfy Σ w = 1 W α w = 1 .
As target function ObjFun, for same target function, the quantity W of weight factor equates that with the quantity O of target item target function can be described below with the dot product product function of target weight vector and object vector:
Objfun = ObjWeigt · Obj T = Σ 1 W α w Obj w
The service of further setting up provides the preference pattern ObjFunc of entity according to target function.In preference pattern, the related target factor corresponding to the QoS index of target function is divided into two types, and one type is that numerical value is the bigger the better, availability, reliability and disposal ability etc. in the QoS index for example, and it uses symbol d in preference pattern k -Represent, k=1 wherein, 2,3 ..., K, K are the natural number that equates with the quantity of target item.Another kind of is that numerical value is more little good more, and for example the time of implementation of service and expense etc. are used symbol d in model k +Represent.Through the target factor corresponding to the QoS index is as above classified, be example with the preference pattern that comprises four target factors, preference pattern ObjFunc for example is:
ObjFunc=α 1(d 1 +∨0)+α 2(d 2 +∨0)+α 3(d 3 -∨0)+α 4(P×F∨0)
Wherein, F is that step 203 is calculated the path that obtains, and P is a penalty coefficient, satisfies P>0; d k +=Q k-Q 0 k, d k -=Q 0 k-Q k, Q kFor service provides entity actual qos value, Q 0 kQos value for user expectation; " a ∨ 0 " expression when a greater than 0 the time, value is got a, when a smaller or equal to 0 the time, value gets 0.To this preference pattern ObjFunc, can pass through α 1, α 2And α 3What be provided with is enough big, guarantees the QoS demand that selected service provides entity can satisfy the user.For example, with α 1, α 2And α 3Be set to 10000, then when the corresponding target factor is not 0, the desired value that can cause calculating acquisition is very big, thereby can't be selected.Alternatively, work as d 1 +, d 2 +And d 3 -Numerical value not when the same order of magnitude, also can be to d 1 +, d 2 +And d 3 -Carry out normalization and handle, when carrying out selection, can take into full account each target factor.
Service to respectively to be selected provides entity; Through preference pattern is found the solution; All can get access to a desired value, this desired value is more little, and expression is more near user's QoS demand; And can make network resource usage optimum, thus the minimum service of select target value entity is provided is that the user provides service.Wherein, the process that preference pattern is found the solution can adopt any derivation algorithm of the prior art to realize, for example adopts genetic algorithm, finds the solution efficient with raising.
Service according to present embodiment provides entity selection method, has realized that more flexible services provides entity selection method, can realize selecting service that entity is provided according to the service procedure that comprises a plurality of services.
Embodiment three
Fig. 3 provides the structural representation of entity selection device for the service of one embodiment of the invention.As shown in Figure 3, this service provides the entity selection device to comprise:
Services request receiver module 31 is used to receive the service request information that the user sends, and said service request information comprises the service quality of said user's acquisition request service, and said user position information;
Type screening module 32 is used for the COS according to said user's acquisition request service, confirms that at least two services to be selected provide entity;
Information on services acquisition module 33 is used to obtain the positional information that service said to be selected provides entity, and service said to be selected provides entity that the service quality of service is provided;
Routing information acquisition module 34 is used for providing according to service said to be selected the positional information and the said user position information of entity, obtains the path that service said to be selected provides the said user of physical distance;
Select module 35; Be used for if service said to be selected provides entity that the service quality of service is provided; Satisfy the service quality of said user's acquisition request service; The said user's of physical distance path then is provided according to service said to be selected, confirms that the service of selecting provides entity, provides entity to said user corresponding service to be provided with the service by said selection.
The service of present embodiment provides the entity selection device to select service to provide the flow process of entity to provide entity selection method identical with the service of the foregoing description, so locate to repeat no more.
Service based on present embodiment provides the entity selection device through the COS based on the service of user's acquisition request, confirms that service to be selected provides entity; The positional information and the user position information of entity are provided based on service to be selected; Calculate the path that service respectively to be selected provides the physical distance user; And combine path, respectively service to be selected provides the QoS that entity provides service and the QoS of user's acquisition request service; Comprehensive selection goes out to be used to the user provides the service of respective service that entity is provided, thereby can either satisfy user's QoS demand, also through combining service to provide the distance between entity and the user to carry out selection; The balanced to a certain extent service of being disposed in the network provides the load of entity; And when the short service of preferential selection path provided entity, also having improved service provided efficient, and having reduced to the user provides the required Internet resources that take of service etc.Therefore, realized when satisfying user QoS demand, optimized and utilize Internet resources.
Further, provide in the entity selection device in the service of the foregoing description, the quantity of said user's acquisition request service be at least two, and correspondingly, said service request information comprises the service quality that each acquisition request is served.
Further, provide in the entity selection device in the service of the foregoing description, said service request information also comprises the service procedure of said at least two acquisition request service;
Correspondingly, said routing information acquisition module specifically is used for:
If know according to said service procedure judgement; Provide with the corresponding service of said at least two acquisition request service respectively and have communication between the entity; The positional information and the said user position information of entity then are provided according to service respectively to be selected; Obtain said service respectively to be selected the first via electrical path length between entity and the said user is provided, and correspond respectively in the said service procedure the different COSs that have communication, service provides second path between the entity;
According to said first via electrical path length and said second path, obtain the path that service said to be selected provides the said user of physical distance.
Further; Service at the foregoing description provides in the entity selection device; Said selection module specifically is used for: obtain the service quality that service respectively to be selected provides entity that service is provided, with the service quality difference of the service quality of said user's acquisition request service; Filter out said service quality difference and entity is provided less than the service to be selected of predetermined threshold value; Calculating the said service respectively to be selected that filters out provides entity corresponding, the weighted sum of said path and said service quality difference; To have minimum weight and service to be selected entity is provided, the service of confirming as said selection provides entity.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.

Claims (8)

1. a service provides entity selection method, it is characterized in that, comprising:
Receive the service request information that the user sends, said service request information comprises the service quality of said user's acquisition request service, and said user position information;
According to the COS of said user's acquisition request service, confirm that at least two services to be selected provide entity;
Obtain the positional information that service said to be selected provides entity, and service said to be selected provides entity that the service quality of service is provided;
According to service said to be selected the positional information and the said user position information of entity are provided, obtain the path that service said to be selected provides the said user of physical distance;
If service said to be selected provides entity that the service quality of service is provided; Satisfy the service quality of said user's acquisition request service; The said user's of physical distance path then is provided according to service said to be selected; Confirm that the service of selecting provides entity, provides entity to said user corresponding service to be provided with the service by said selection.
2. service according to claim 1 provides entity selection method, it is characterized in that, the quantity of said user's acquisition request service is at least two, and correspondingly, said service request information comprises the service quality of each acquisition request service.
3. said service provides entity selection method according to claim 2, it is characterized in that, said service request information also comprises the service procedure of said at least two acquisition request service;
Correspondingly, saidly the positional information and the said user position information of entity are provided, obtain the path that service said to be selected provides the said user of physical distance, specifically comprise according to service said to be selected:
If know according to said service procedure judgement; Provide with the corresponding service of said at least two acquisition request service respectively and have communication between the entity; The positional information and the said user position information of entity then are provided according to service respectively to be selected; Obtain said service respectively to be selected the first via electrical path length between entity and the said user is provided, and correspond respectively in the said service procedure the different COSs that have communication, service provides second path between the entity;
According to said first via electrical path length and said second path, obtain the path that service said to be selected provides the said user of physical distance.
4. arbitrary described service provides entity selection method according to claim 1-3; It is characterized in that; Said if the service quality that service said to be selected provides entity that service is provided satisfies the service quality that said user's acquisition request is served, the said user's of physical distance path then is provided according to service said to be selected; Confirm that the service of selecting provides entity, specifically comprises:
Obtain the service quality that service respectively to be selected provides entity that service is provided, with the service quality difference of the service quality of said user's acquisition request service;
Filter out said service quality difference and entity is provided less than the service to be selected of predetermined threshold value;
Calculating the said service respectively to be selected that filters out provides entity corresponding, the weighted sum of said path and said service quality difference;
To have minimum weight and service to be selected entity is provided, the service of confirming as said selection provides entity.
5. a service provides the entity selection device, it is characterized in that, comprising:
The services request receiver module is used to receive the service request information that the user sends, and said service request information comprises the service quality of said user's acquisition request service, and said user position information;
The type screening module is used for the COS according to said user's acquisition request service, confirms that at least two services to be selected provide entity;
The information on services acquisition module is used to obtain the positional information that service said to be selected provides entity, and service said to be selected provides entity that the service quality of service is provided;
The routing information acquisition module is used for providing according to service said to be selected the positional information and the said user position information of entity, obtains the path that service said to be selected provides the said user of physical distance;
Select module; Be used for if service said to be selected provides entity that the service quality of service is provided; Satisfy the service quality of said user's acquisition request service; The said user's of physical distance path then is provided according to service said to be selected, confirms that the service of selecting provides entity, provides entity to said user corresponding service to be provided with the service by said selection.
6. service according to claim 5 provides the entity selection device, it is characterized in that, the quantity of said user's acquisition request service is at least two, and correspondingly, said service request information comprises the service quality of each acquisition request service.
7. service according to claim 6 provides the entity selection device, it is characterized in that, said service request information also comprises the service procedure of said at least two acquisition request service;
Correspondingly, said routing information acquisition module specifically is used for:
If know according to said service procedure judgement; Provide with the corresponding service of said at least two acquisition request service respectively and have communication between the entity; The positional information and the said user position information of entity then are provided according to service respectively to be selected; Obtain said service respectively to be selected the first via electrical path length between entity and the said user is provided, and correspond respectively in the said service procedure the different COSs that have communication, service provides second path between the entity;
According to said first via electrical path length and said second path, obtain the path that service said to be selected provides the said user of physical distance.
8. arbitrary described service provides the entity selection device according to claim 5-7; It is characterized in that; Said selection module specifically is used for: obtain the service quality that service respectively to be selected provides entity that service is provided, with the service quality difference of the service quality of said user's acquisition request service; Filter out said service quality difference and entity is provided less than the service to be selected of predetermined threshold value; Calculating the said service respectively to be selected that filters out provides entity corresponding, the weighted sum of said path and said service quality difference; To have minimum weight and service to be selected entity is provided, the service of confirming as said selection provides entity.
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