CN104185135B - Ubiquitous service selecting method and system - Google Patents
Ubiquitous service selecting method and system Download PDFInfo
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- CN104185135B CN104185135B CN201410392252.3A CN201410392252A CN104185135B CN 104185135 B CN104185135 B CN 104185135B CN 201410392252 A CN201410392252 A CN 201410392252A CN 104185135 B CN104185135 B CN 104185135B
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Abstract
The present invention relates to a kind of ubiquitous service selecting methods and system, the above method to include：S1, user terminal trigger multiple ubiquitous business according to the user state information detected；S2, user terminal determine multiple ubiquitous business, judge the business that itself can be performed, calculate the quality of service benefit of corresponding service, quality of service benefit is sent to the user terminal to other-end broadcast data packet in other-end；S3, user update candidate terminal list according to the corresponding terminal of maximum traffic quality and benifit, are loaded into according to updated candidate terminal list and execute terminal list, and the terminal executed in terminal list is performed in unison with corresponding business according to structural relation.Through the above technical solutions, business processing quality can be improved, the concertedness of execution business between heterogeneous nodes is improved, the continuity of business processing is improved.
Description
Technical field
The present invention relates to wireless communication technology fields, general in particular to a kind of ubiquitous service selecting method and one kind
In service selection system.
Background technology
As to diversified development, the related definition of network edge is greatly expanded network constantly high speed, various businesses need
It asks and the features such as diversity of surrounding network equipment more aobvious protrusion, a large amount of heterogeneous terminals is distributed in network edge and user's week
Side is interconnected with heterogeneous access pattern, realizes that person to person, the communication of people and object, object and object form such as smart home, intelligence
The ubiquitous tip environment such as energy medical treatment, Intelligent campus.In these environment, the definition of terminal has obtained great extension, business
Content has obtained greatly enriching, and various terminals (such as sensor, mobile phone, PDA, portable computer, robot etc.) are distributed in
In network, storage capacity, ability to play, computing capability, sensing capability can be combined as a kind of professional ability by group
At ubiquitous business, making user, any place can enjoy personalized high-quality business at any time.
In the ubiquitous tip environment with mobile ad-hoc network characteristic, without fixed infrastructure service facility, each end
End can rely on wireless communication technique Anywhere quickly to form self-organizing network at any time, each terminal tool under the environment
There are following features：Isomerism, ability be limited, dynamic, resource are unbalanced etc. so that network topology structure constantly changes, node
Resource-constrained inefficiency causes user that can not continue to obtain the ubiquitous business of personalization of high quality.Therefore, a kind of terminal is established
In moving process between perception terminal cooperative ability with ensure the user experience in process of service execution have important researching value.
In order to provide the user with the sustainable composite service of high quality, service disconnection number is reduced, reduces and interrupts expense, need to consider
Concertedness of the terminal in moving process, to ensure to provide best user experience to the user.
Some Ubiquitous Network business treatment techniques in the related technology, some are only capable of processing static traffic selection, and cannot
The ubiquitous environment with mobility and frequent change in topology is adapted to, the context of terminal environments is ignored, is lacked to remaining ubiquitous
The selection method of business, adaptivity is poor, or does not account for business dynamic changeability in a network and smart machine
Mobility has ignored the overall performance of synergisticing performance and polymerization terminal as ubiquitous business component part between node.
Invention content
The technical problem to be solved by the present invention is to when handling ubiquitous business, choose has higher business in a network
The terminal processes business of benefit improves business processing quality, and is rapidly cooperateed with by the terminal of selection and complete ubiquitous business, subtracts
Interruption times during few processing business, improve the continuity of business processing.
For this purpose, the present invention proposes a kind of ubiquitous service selecting method, including：S1, user terminal is according to detecting
User state information trigger multiple ubiquitous business, initialize the corresponding execution terminal of each business in the multiple ubiquitous business
List, candidate terminal list, and register the structural relation between the multiple ubiquitous business；S2, the user terminal is according to every
The type of a business generates data packet, described to the other-end broadcast data packet of user terminal institute in a network
Each terminal in other-end determines the multiple ubiquitous business according to the data packet respectively, judges whether itself can hold
Any business in the multiple ubiquitous business of row calculates the quality of service benefit of corresponding service if being able to carry out, will be described
Quality of service benefit is sent to the user terminal；S3, the user terminal judge the corresponding multiple quality of services of each business
Maximum traffic quality and benifit in benefit, if be more than the quality of service for the candidate terminal that business is corresponded in the candidate terminal list
Benefit, if more than then the candidate terminal list being updated according to the corresponding terminal of the maximum traffic quality and benifit, according to update
Candidate terminal list afterwards is loaded into the execution terminal list, and the terminal executed in terminal list is according to the structural relation
It is performed in unison with corresponding business.
Preferably, the step S1 further includes：Each processing is arranged according to pre-set user characteristic information in the user terminal
First weights of the individual capability of the terminal of business, the terminal of each processing business are adjacent between ancestors' business counterpart terminal
Second weights of path quality, the terminal of each processing business are adjacent of synergisticing performance between ancestors' business counterpart terminal
Three weights determine first weights, the second weights and third weights by least square and method and Lagrangian entropy assessment
Initial value.
Preferably, the individual capability is ρIC(di,j), di,jExpression can be able to carry out business S for j-thiTerminal, wherein
Wherein, οk(si) it is business SiDemand to k-th of resource,For terminal di,jCurrent available resource；
The synergisticing performance ρSC(dk1,dk2)=α (dk1,dk2)×σSC(dk1,dk2), wherein
α(dk1,dk2) it is access expense, σSC(dk1,dk2) be terminal room collaboration mobility, | dk1,dk2| it is terminal dk1And terminal
dk2The distance between, CR is the transmission range of two terminals of lie farthest away in the network.
Preferably, the step S2 includes：Whether S21, each terminal in the other-end judge itself respectively
Any business in the multiple ubiquitous business is enough provided, if being capable of providing, judges whether itself Current resource meets institute's energy
The demand of offer business collects the adjoining ancestors' business pair for the business that can be provided according to the structural relation if disclosure satisfy that
Answer the status information of terminal；S22, individual capability is calculated according to itself current processing capabilities, and road is calculated according to the status information
Path quality and synergisticing performance, according to the initial value of the individual capability and first weights, the path quality and described
Quality of service benefit described in the calculation of initial value of the initial value of two weights, the synergisticing performance and the third weights, will be described
Quality of service benefit is sent to the user terminal.
Preferably, the quality of service benefit
Preferably, the step S22 includes：The quality of service benefit is calculated by distributed computing method.
Preferably, the step S1 further includes：Each business is arranged according to pre-set user characteristic information in the user terminal
Corresponding terminal access time and the step S3 further include：Judge the candidate of any business in the multiple ubiquitous business
Terminal chooses whether process time is more than the corresponding terminal selection time, if more than the time of next business of the business is then carried out
Select the selection of terminal.
Preferably, further include：S4, the other-end obtain individual capability, path quality and collaboration according to predetermined period
Performance, calculates new quality of service benefit according to the individual capability, path quality and the synergisticing performance that get, and will be described new
Quality of service benefit is sent to the user terminal, and the user terminal judges the new quality of service benefit relative to original
Whether the down ratio of quality of service benefit more than preset value then re-executes the step S1 if more than the preset value.
Preferably, further include：S5, judges whether the number for re-executing the step S1 is more than preset times, if more than
The preset times then obtain the first new weights, the second weights and third weights according to objective entropy evaluation method, and update institute
State the initial value of the first weights, the second weights and third weights, the other-end according to the first new weights, the second weights and
The new quality of service benefit is sent to the user terminal, held again by the new quality of service benefit of third weight computing
The row step S3.
The invention also provides a kind of ubiquitous service selection system, including a user terminal and with the user terminal institute
Multiple other-ends in a network, wherein the user terminal includes：Initialization unit, for according to the user detected
Status information triggers multiple ubiquitous business, initialize the corresponding execution terminal list of each business in the multiple ubiquitous business,
Candidate terminal list, and register the structural relation between the multiple ubiquitous business；Radio unit, for according to each business
Type generates data packet, and the data packet is broadcasted to the multiple other-end；Updating unit, the business for judging to receive
Quality and benifit, if be more than the quality of service benefit for the candidate terminal that business is corresponded in the candidate terminal list, if more than then
The candidate terminal list is updated according to the corresponding terminal of the quality of service benefit received；Execution unit, for according to update
Candidate terminal list afterwards is loaded into the execution terminal list, and the terminal in the execution terminal list is made to be closed according to the structure
System is performed in unison with corresponding business；And the other-end includes：Judging unit, described in being determined according to the data packet
Multiple ubiquitous business judge that any business itself whether being able to carry out in the multiple ubiquitous business is counted if being able to carry out
The quality of service benefit for calculating corresponding service, the user terminal is sent to by the quality of service benefit.
Through the above technical solutions, phase can be executed according to the quality of service benefit selection optimum terminal for executing service terminal
Business is answered, to ensure the execution quality of ubiquitous business, weights can be set according to the characteristic information of user to determine quality of service
Benefit so that service executing result more meets needed for user, can be according to parameters such as individual capability, path quality and synergisticing performances
Determine quality of service benefit so that the concertedness for improving execution business between heterogeneous nodes, it can be according to service executing result
Initial weight is automatically updated, maintains business to execute quality, and reduce the interruption times in process of service execution, business is improved and executes
Continuity.
Description of the drawings
The features and advantages of the present invention can be more clearly understood by reference to attached drawing, attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings：
Fig. 1 shows the schematic flow diagram of ubiquitous service selecting method according to an embodiment of the invention；
Fig. 2 shows ubiquitous service environment schematic diagrames according to an embodiment of the invention；
Fig. 3 shows the schematic diagram of the operation layer and mechanical floor of ubiquitous business according to an embodiment of the invention；
Fig. 4 shows the schematic diagram of the ubiquitous business of multiple terminal processes according to an embodiment of the invention；
Fig. 5 shows the schematic block diagram of ubiquitous service selection system according to an embodiment of the invention.
Specific implementation mode
It can be more clearly understood that the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific implementation
The present invention is further described in detail in mode.It should be noted that in the absence of conflict, embodiments herein
And the feature in embodiment can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 1 shows the schematic flow diagram of ubiquitous service selecting method according to an embodiment of the invention.
As shown in Figure 1, ubiquitous service selecting method according to an embodiment of the invention includes：S1, user terminal according to
The user state information that detects triggers multiple ubiquitous business, initializes that each in multiple ubiquitous business business is corresponding executes end
List, candidate terminal list are held, and registers the structural relation between multiple ubiquitous business；S2, user terminal is according to each business
Type generate data packet, to user terminal other-end broadcast data packet in a network, each end in other-end
End determines multiple ubiquitous business according to data packet respectively, judges any industry itself whether being able to carry out in multiple ubiquitous business
Business, if being able to carry out, calculates the quality of service benefit of corresponding service, quality of service benefit is sent to the user terminal；S3 is used
Family terminal judges maximum traffic quality and benifit in the corresponding multiple quality of service benefits of each business, if is more than candidate terminal and arranges
The quality of service benefit that the candidate terminal of business is corresponded in table, if more than then according to the corresponding terminal of maximum traffic quality and benifit
Candidate terminal list is updated, is loaded into according to updated candidate terminal list and executes terminal list, executes the end in terminal list
End is performed in unison with corresponding business according to structural relation.
Ubiquitous business can be detected user state information triggering automatically by user terminal, can also pass through user's end by user
It formulates manually at end.For a ubiquitous business, there may be multiple terminals to be capable of providing the business in a network, but due to every
A terminal all has different individual factors and different context factors so that each terminal executes the quality of service of the business
Benefit is different, therefore is directed to some business, can first be determined to execute its several terminals, then by these terminals
The quality of service benefit for itself executing the business is calculated separately, user terminal can choose wherein maximum traffic quality and benifit and time
The quality of service benefit for the terminal for executing the business in terminal list is selected to be compared, if more than the business is executed in candidate list
Terminal quality of service benefit, then the corresponding terminal of maximum traffic quality and benifit can be selected to execute the business, to ensure
The business is completed in current network with best quality, and then ensures the higher execution quality of multiple ubiquitous business.
The data packet of user terminal broadcast, the domains Qi Bao may include：Packet type, type of service, terminal (node) ID, movement
Property parameter etc..
Preferably, step S1 further includes：The end of each processing business is arranged according to pre-set user characteristic information for user terminal
First weights of the individual capability at end, the terminal of each processing business are adjacent path quality between ancestors' business counterpart terminal
The second weights, each processing business terminal be adjacent the third weights of synergisticing performance between ancestors' business counterpart terminal,
The initial value of the first weights, the second weights and third weights is determined by least square and method and Lagrangian entropy assessment.
Preferably, individual capability ρIC(di,j), di,jExpression can be able to carry out business S for j-thiTerminal, wherein
Wherein, οk(si) it is business SiDemand to k-th of resource,For terminal di,jCurrent available resource；
Synergisticing performance ρSC(dk1,dk2)=α (dk1,dk2)×σSC(dk1,dk2), wherein
α(dk1,dk2) it is access expense, σSC(dk1,dk2) be terminal room collaboration mobility, | dk1,dk2| it is terminal dk1And terminal
dk2The distance between, CR be network in two terminals of lie farthest away transmission range (but in practical calculating process, use
Value is 4 times of the transmission range).
Preferably, step S2 includes：S21, it is more that each terminal in other-end judges whether itself is capable of providing respectively
Any business in a ubiquitous business judges whether itself Current resource meets the need for the business of can be provided if being capable of providing
It asks, if disclosure satisfy that, the status information of the adjoining ancestors' business counterpart terminal for the business that can be provided is collected according to structural relation；
S22, individual capability is calculated according to itself current processing capabilities, and path quality and synergisticing performance are calculated according to status information, according to
At the beginning of the initial value of individual capability and the first weights, the initial value of path quality and the second weights, synergisticing performance and third weights
Initial value calculates quality of service benefit, and quality of service benefit is sent to the user terminal.
Subscriber data (UP) can be prestored in the user terminal, wherein the customs such as own characteristic, preference comprising user
Characteristic information the weights for calculating quality of service benefit is arranged according to the characteristic information of user, it is ensured that the execution of related service
As a result the needs that can more meet particular user, to improve user experience.
For some ubiquitous business, such as business S5, business S is able to carry out in network5Terminal, quality of service benefit
On the one hand related with self-characteristic, can be calculated by obtaining real-time individual capability, on the other hand with its context-sensitive,
It is specific to be adjacent ancestor node (terminal) correlation, since the execution of multiple ubiquitous business there are precedence relationship or executes suitable
Sequence, such as business S5Execution terminal d5,3, in business S4It executes later, business S4Execution terminal be d4,2, then terminal
d4,2It is exactly terminal d5,3Adjoining ancestor node, terminal d5,3Contextual information may include itself and terminal d4,2Path quality
And synergisticing performance.Since network link quality can be influenced by factors such as transmission range and channel noises, and channel is made an uproar
Sound is also related to transmission range, and because transmission time may be used representing transmission range, weighs so as to use transmission to see
Measure the path quality of communication link so that calculating process is simpler, quick.It is deposited since the terminal in heterogeneous network executes business
It, can by calculating the synergisticing performance between two terminals, and in this, as one of the parameter for calculating quality of service benefit in difference
To ensure that a terminal is adjacent ancestor node when doing business, there is comparable concertedness, improve whole business and hold
Row quality.
Preferably, quality of service benefit
WhereinIt can be calculated by Lagrangian entropy assessment, especially by following formula
It obtainsWherein λ is Lagrange multiplier.
Preferably, step S22 includes：Quality of service benefit is calculated by distributed computing method.
By using distributed computing method, the terminal for being each able to carry out corresponding service in network can be made respectively to receive
Collect the information of itself surroundings nodes and calculating, reduces the computation complexity of multiple nodes in ubiquitous tip environment.Wherein Lk,iWith
Lt,iIt is equivalent, the synergisticing performance item in quality of service benefit, load positive correlation is transmitted with expected, meets in expected transmission
In the case of bigger, synergisticing performance proportion in quality of service benefit is bigger, by fully considering that terminal room executes business
Synergisticing performance, more accurate quality of service benefit can be obtained, it is more excellent, more to be provided for the selection of business execution terminal
Accurate foundation.
Preferably, step S1 further includes：Each business corresponding end is arranged according to pre-set user characteristic information in user terminal
End access time and step S3 further include：Judge that the candidate terminal of any business in multiple ubiquitous business chooses process time
Whether it is more than corresponding terminal and selects the time, if more than the selection of the candidate terminal of next business of the business is then carried out.
Since ubiquitous business is there are multiple, for some business, one can be not necessarily found in one network
Terminal, quality of service benefit is more than the quality of service benefit of the business counterpart terminal in candidate list, if for an industry
It is engaged in and wastes the suitable business of excessive selection of time and execute terminal, may be such that entire ubiquitous service selection process is delayed, because
This passes through setting terminal access time, it is ensured that the terminal selection of some business will not expend the excessive time, more to ensure
A ubiquitous business entirety selection course time will not be long, saves user time, improves user experience.
Preferably, further include：S4, other-end obtain individual capability, path quality and synergisticing performance according to predetermined period,
Calculate new quality of service benefit according to the individual capability, path quality and the synergisticing performance that get, and by new quality of service
Benefit is sent to the user terminal, and user terminal judges suppression ratio of the new quality of service benefit relative to original service quality and benifit
Whether example more than preset value then re-executes step S1 if more than preset value.
Due to the terminal chosen in a network, state is also changing, such as own processing capabilities and change in location,
So corresponding quality of service benefit can also change, by periodically comparing the terminal of execution business its quality of service benefit,
And when its quality of service benefit reduces more (such as more than 10%), business is re-initiated, to select more suitable terminal
Each ubiquitous business is executed, to ensureing that each business is executed with better quality, improves user experience.
Preferably, further include：S5, judges whether the number for re-executing step S1 is more than preset times, if more than default
Number then obtains the first new weights, the second weights and third weights according to objective entropy evaluation method, and update the first weights,
The initial value of second weights and third weights, other-end are new according to the first new weights, the second weights and third weight computing
Quality of service benefit, new quality of service benefit is sent to the user terminal, step S3 is re-executed.
If re-initiate business number be more than certain number (number can be specifically arranged as needed by user,
Could be provided as under normal circumstances 2 times or 3 times), illustrate under current network conditions, preset weights have been difficult to full
The state of the terminal of business is each executed in sufficient network, therefore can update initial weight according to entropy evaluation methodIt is specific as follows
Wherein M is decision matrix.Ej is m and executes lumped parameter to attribute ρj(i.e. individual capability, path quality, collaboration
Performance) overall contribution.Based on formulaIn conjunction with the ω acquired in above formulajTo correct initial weightObtain new weights.Then each terminal recalculates quality of service benefit according to new weights.
Specifically, the above method is specifically described so that the user terminal in Intelligent campus initiates ubiquitous business as an example.
As shown in Fig. 2, when service request terminal (i.e. user terminal) initiates business, Intellisense device (can be located at user
Among terminal) can be with contextual informations such as automatic sensing user preferences, positions, and it is transmitted to light perception device and environment adjuster,
Certain setting is carried out to light and environment, relevant information is sent to file selection system, file selection system is according to user's
Information and ambient enviroment selection suitably introduce content or relevant video content, are finally carried out mutually inside the Pass by suitable screen
The broadcasting of appearance.
As shown in figure 3, operation layer therein is the corresponding structure of ubiquitous business in Fig. 2, there are 15 terminals in mechanical floor,
A miniature ubiquitous tip network is constituted, and does not have other infrastructure in the network, terminal has following in network
Characteristic：Radiation coverage is limited；Terminal has the function of receiving and forwards data packet, and the data packet in network can be in
It is forwarded after node；Terminal is capable of providing a certain business.di,jExpression can be able to carry out business S for j-thiTerminal, for figure
For 2, S therein1Indicate user information perception service, S2Indicate light perception business, S3Indicate that environment adjusts business, S4It indicates
File selects business, S5Indicate display business.
When the state of user or emotion change, business initiating terminal d1It is certain ubiquitous to perceive user demand triggering
When business, terminal itself registers ubiquitous business structure, initialization executes terminal list and candidate terminal list, foundation user provides
The timer of presupposed information setting business in material, sets the weights of three individual capability, network characteristic and cooperative ability factors,
Assuming that the initial weight for obtaining three factors is
The data packet set is subjected to broadcast request business, business S is searched in ubiquitous tip environment2To S5Candidate
Service node.
As terminal d2,1、d2,2、d2,3、d3,1、d4,1、d4,2、d5,1、d5,2、d5,3Receive business S2Request data package after, sentence
It is disconnected itself whether to match business and whether can meet resource requirement, wherein d2,1、d2,2And d2,3Business S can be matched2, other
Terminal will abandon this data packet.
d2,1、d2,2And d2,3Node into tip environment sends the information with timestamp and adjacent type of service and collects
Data packet, according to business structure, S2Adjoining ancestors' business be S1, d2,1、d2,2And d2,3It will be to S can be provided1Terminal send
Data packet, terminal d1,1The mobility information of oneself is attached to (for calculating path quality and synergisticing performance) after receiving data packet
It is fed back into row information in data packet with timestamp.
The terminal for having collected adjacent ancestors' end message combines the individual capability of itself to calculate quality of service benefit value, and will
Termination ID, adjacent ancestors' Termination ID, the parameters such as quality of service benefit value are loaded into data packet and are sent to business initiating terminal.
Business initiating terminal receives the feedback packet of each terminal, updates candidate node list.If current business S2Business meter
When device then, then carry out the list update of next business.
Business S3To S5The selection course and S of counterpart terminal2It is substantially similar, wherein S can be provided4Device node receive industry
When request bag of being engaged in, the network performance and concertedness parameter information that are collected simultaneously the node that type of service is 2 and 3, and foundation are needed
Ubiquitous business structure calculates quality of service benefit.
As shown in figure 4, will be provided optimal according to candidate terminal list after completing the terminal to all business and choosing
The terminal combinations of quality of service, which are loaded into, to be executed in terminal list.Such as d in final selection network1,1、d2,2、d3,1、d4,2、d5,3For
The execution terminal of ubiquitous business, final provide that cooperate most preferably play business.
Terminal is executed during the maintenance of business to execute terminal transmission monitoring to adjacent business according to some cycles
Information.Such as detect d3,1Because certain reason causes quality of service decline in benefits (to drop to and be more than to original 89%
10%), then feeder alert information, carries out the selection again of service node.After every generation is chosen again three times, then more new individual
Ability, three factors of network characteristic and cooperative ability weights after, new weighted value is loaded into the choosing that data packet carries out business again
It selects.
Fig. 5 shows the schematic block diagram of ubiquitous service selection system according to an embodiment of the invention.
As shown in figure 5, ubiquitous service selection system 10 according to an embodiment of the invention includes a user terminal
With with user terminal multiple other-ends in a network, wherein user terminal 20 includes：Initialization unit 202 is used for root
Multiple ubiquitous business are triggered according to the user state information detected, initialize the corresponding execution of each business in multiple ubiquitous business
Terminal list, candidate terminal list, and register the structural relation between multiple ubiquitous business；Radio unit 204, for according to every
The type of a business generates data packet, to multiple other-end broadcast data packets；Updating unit 206, for judge to receive
Quality of service benefit, if be more than the quality of service benefit for the candidate terminal that business is corresponded in candidate terminal list, if more than then
Candidate terminal list is updated according to the corresponding terminal of the quality of service benefit received；Execution unit 208, after according to update
Candidate terminal list be loaded into execute terminal list, so that the terminal in execution terminal list is performed in unison with accordingly according to structural relation
Business；And other-end 30 includes：Judging unit 302 judges itself for determining multiple ubiquitous business according to data packet
Any business whether being able to carry out in multiple ubiquitous business calculates the quality of service benefit of corresponding service if being able to carry out,
Quality of service benefit is sent to the user terminal.
In the present invention, term " first ", " second ", " third " are used for description purposes only, and should not be understood as instruction or
Imply relative importance.Term " multiple " refers to two or more, unless otherwise restricted clearly.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of ubiquitous service selecting method, which is characterized in that including：
S1, user terminal trigger multiple ubiquitous business according to the user state information detected, initialize the multiple ubiquitous industry
The corresponding execution terminal list of each business, candidate terminal list in business, and register the structure between the multiple ubiquitous business
Relationship；
S2, the user terminal generate data packet according to the type of each business, to the user terminal in a network its
Data packet described in his terminal broadcast, each terminal in the other-end determine according to the data packet the multiple general respectively
In business, any business itself whether being able to carry out in the multiple ubiquitous business is judged, if being able to carry out, calculate corresponding
The quality of service benefit is sent to the user terminal by the quality of service benefit of business；
S3, the user terminal judge maximum traffic quality and benifit in the corresponding multiple quality of service benefits of each business, if
More than the quality of service benefit for the candidate terminal for corresponding to business in the candidate terminal list, if more than then according to the maximum
The corresponding terminal of quality of service benefit updates the candidate terminal list, is held according to described in updated candidate terminal list loading
Row terminal list, the terminal executed in terminal list are performed in unison with corresponding business according to the structural relation.
2. ubiquitous service selecting method according to claim 1, which is characterized in that the step S1 further includes：
The first power of the individual capability of the terminal of each processing business is arranged according to pre-set user characteristic information for the user terminal
Value, the terminal of each processing business are adjacent the second weights of path quality between ancestors' business counterpart terminal, each processing
The terminal of business is adjacent the third weights of synergisticing performance between ancestors' business counterpart terminal, by least square and method and
Lagrangian entropy assessment determines the initial value of first weights, the second weights and third weights.
3. ubiquitous service selecting method according to claim 2, which is characterized in that the individual capability is ρIC(di,j), di,j
It indicates to be able to carry out business S j-thiTerminal, wherein
Wherein, ok(si) it is business SiDemand to k-th of resource,For terminal di,jCurrent available resource；
The path qualityWherein, P (ihjh,ih+ 1jh+1) it is terminal dk1With terminal dk2Between network link quality, PreqFor the maximum transmission distance in the other-end, hop
Refer to from terminal dk1To terminal dk2Needed in transmission path by number of terminals；
The synergisticing performance ρSC(dk1,dk2)=α (dk1,dk2)×σSC(dk1,dk2), wherein
α(dk1,dk2) it is access expense, σSC(dk1,dk2) be terminal room collaboration mobility, | dk1,dk2| it is terminal dk1And terminal
dk2The distance between, CR is the transmission range of two terminals of lie farthest away in the network, υk1It is terminal dk1Mobile speed
Degree, υk2It is terminal dk2Movement speed, vmaxIt is the maximum movement speed of terminal, dk1-dk2Refer to terminal dk1With terminal dk2Speed
The angle in direction.
4. ubiquitous service selecting method according to claim 3, which is characterized in that the step S2 includes：
S21, each terminal in the other-end judge itself whether be capable of providing in the multiple ubiquitous business respectively
Any business judges whether itself Current resource meets the needs of can be provided business if being capable of providing, if disclosure satisfy that,
The status information of the adjoining ancestors' business counterpart terminal for the business that can be provided then is collected according to the structural relation；
S22, individual capability is calculated according to itself current processing capabilities, and path quality and concertedness are calculated according to the status information
Can, according to the initial value of the individual capability and first weights, the initial value of the path quality and second weights,
Quality of service benefit described in the calculation of initial value of the synergisticing performance and the third weights sends the quality of service benefit
To the user terminal.
5. ubiquitous service selecting method according to claim 4, which is characterized in that the quality of service benefit
Wherein,The initial value of respectively described first weights, the second weights and third weights,
SAiFor business SiAdjoining ancestors' business set, saiFor the number of element in set, SAi[k] is business SiK-th
Adjacent ancestors' business, SAi[1] it is business SiThe 1st adjacent ancestors' business, SAi[sai] it is business SiThe last one adjoining ancestral
First business, Lt, i are business SiAncestors' business S is abutted to ittTransmission load, Li be business SiTo its all of its neighbor ancestors' business
Total expected transmission load.
6. ubiquitous service selecting method according to claim 4, which is characterized in that the step S22 includes：
The quality of service benefit is calculated by distributed computing method.
7. ubiquitous service selecting method according to claim 3, which is characterized in that the step S1 further includes：
Each business corresponding terminal access time is arranged according to pre-set user characteristic information in the user terminal, and
The step S3 further includes：Judge whether the candidate terminal of any business in the multiple ubiquitous business chooses process time
The time is selected more than corresponding terminal, if more than the selection of the candidate terminal of next business of the business is then carried out.
8. ubiquitous service selecting method according to claim 3, which is characterized in that further include：
S4, the other-end obtain individual capability, path quality and synergisticing performance according to predetermined period, according to got
Ability of immigrants, path quality and synergisticing performance calculate new quality of service benefit, and the new quality of service benefit is sent to
The user terminal, the user terminal judge decline of the new quality of service benefit relative to original service quality and benifit
Whether ratio more than preset value then re-executes the step S1 if more than the preset value.
9. ubiquitous service selecting method according to claim 5, which is characterized in that further include：
S5, judges whether the number for re-executing the step S1 is more than preset times, if more than the preset times, then basis
Objective entropy evaluation method obtains the first new weights, the second weights and third weights, and updates first weights, the second weights
With the initial value of third weights, the other-end is according to the first new weights, the second weights and the new industry of third weight computing
Business quality and benifit, is sent to the user terminal by the new quality of service benefit, re-executes the step S3.
10. a kind of ubiquitous service selection system, which is characterized in that including a user terminal and with the user terminal where net
Multiple other-ends in network, wherein
The user terminal includes：
Initialization unit, for triggering multiple ubiquitous business according to the user state information detected, initialization is the multiple general
The corresponding execution terminal list of each business, candidate terminal list in business, and register between the multiple ubiquitous business
Structural relation；
Radio unit broadcasts the data for generating data packet according to the type of each business to the multiple other-end
Packet；
Updating unit, the quality of service benefit for judging to receive, if be more than in the candidate terminal list and correspond to business
Candidate terminal quality of service benefit, if more than then according to described in the corresponding terminal update of the quality of service benefit that receives
Candidate terminal list；
Execution unit makes the execution terminal for being loaded into the execution terminal list according to updated candidate terminal list
Terminal in list is performed in unison with corresponding business according to the structural relation；And
The other-end includes：
Whether judging unit judges itself to be able to carry out described for determining the multiple ubiquitous business according to the data packet
Any business in multiple ubiquitous business calculates the quality of service benefit of corresponding service if being able to carry out, by the business matter
Dose-effect benefit is sent to the user terminal.
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