CN101119314A

CN101119314A - Multimode terminal service stream control system and device and method

Info

Publication number: CN101119314A
Application number: CNA2007101218403A
Authority: CN
Inventors: 董雯霞; 孙毅; 郑如松; 张玉成; 王忠峰; 邓平; 石晶林
Original assignee: Institute of Computing Technology of CAS
Current assignee: Institute of Computing Technology of CAS
Priority date: 2007-09-14
Filing date: 2007-09-14
Publication date: 2008-02-06
Anticipated expiration: 2027-09-14
Also published as: CN101119314B

Abstract

The present invention relates to a multi module terminal business flow controlling system and method. The system comprises a communication network which comprises a central network and a switch in network and at least a multi module terminal. The multi module terminal is provided with a plurality of wireless network connector which matches with the communication network; the switch in network of the communication network comprises a network context monitoring module; the multi module terminal comprises a context monitoring module, a business discerning module, a strategic engine module and a switch enforcing module. The present invention can realize the lowest expanse and the highest utilization rate of resource.

Description

A kind of module terminal business flow controlling system and device and method

Technical field

The present invention relates to the packet network technologies field, particularly a kind of module terminal business flow controlling system and device and method.

Background technology

(Next Generation Network NGN) is the network based on the all-IP architectural framework that one kind of multiple access waies merge to next generation network.Along with microelectric technique, IPv6 technology and wireless communication process development of technology, following terminal equipment will be the multi-mode communication terminal that is equipped with multiple wireless transmitter, this terminal can insert multiple network simultaneously, thereby can bring bigger property easy to use to people.

As shown in Figure 1, be the application scenarios figure of a future network.Wherein, multimode terminal both can be directly and GPRS (General Packet Radio Service, GPRS) and universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS) network links to each other, also can be by infrared interface and personal digital assistant (Personal Digital Assistant, PDA) link to each other, utilize interconnecting of PDA realization and internet.If 3 sessions in parallel running on this multimode terminal, be respectively that speech, Email and file are downloaded, because these 3 kinds of sessions have different service features and QoS requirement, transmission plan is generally, for voice service, should select the best UMTS network of service quality to transmit, Email can use GPRS network to transmit, (Wireless LAN, WLAN) network transmits then to insert the WLAN (wireless local area network) that charge is the cheapest, bandwidth is maximum by the PDA in the same local area network (LAN) for the bigger file downloading service of data volume.In addition, because moving of user may cause wlan network no longer available, the PDA of this moment should notify this multimode terminal, proceeds on the GPRS network to download so that allow this multimode terminal can be in time the file download session of this locality be switched to.

That is to say that following network is the network that multiple wireless access way merges, following terminal is the terminal that is equipped with multiple wireless transmitter.Therefore, the universal of multimode terminal is a kind of inexorable trend, and multi-mode mobile communication all can have important use and be worth in scenes such as military, commercial, civilian, medical treatment.

But, in various application scenarioss, when multimode terminal moves or network condition when changing, may cause redistributing or switching of Business Stream on the multimode terminal (also being business data flow), and traditional mobile IP be can't satisfy the demand (see D.Johnson, C.Perkins, J.Arkko, " MobilitySupport in IPv6 ", IETF RFC3775), at this moment, in the complex environment of multiple wireless network convergence, optimum access network can't dynamically be selected for the multimode terminal user by operator; When network condition and traffic conditions change, do not restarting, do not interrupting under the prerequisite of upper-layer service, Business Stream can't be redirected on the network interface of new optimum, can't guarantee quality of services for users.

Application number is that 200610088980.0 Chinese invention patent discloses a kind of vertical handover control system and control method based on fuzzy logic, it comprises: obfuscation module, fuzzy logic inference module, ambiguity solution module, knowledge base and 5 parts of Configuration Manager are carried out comprehensive evaluation by fuzzy decision algorithm to many-sided factors such as network link quality, bandwidth, price, battery electric quantity, translational speed and user preference of mobile node (MN), select optimum network and switch.The method that this invention provided has solved the mobile device trade-off decision problem of optimal network in the vertical handover procedure in the network environment of the overlapping covering of isomery that possesses the multiple network access technology.

But, though mentioned multimode terminal in this invention, there is not realization multimode terminal truly, in communication process, have only a wireless receiving and dispatching interface to use, its handoff procedure still is traditional vertical switching.How this invention does not provide the switching that realizes single Business Stream on available wave point of a plurality of whiles of multimode terminal yet, though also taken all factors into consideration multifactor judgement, but handoff procedure still is traditional switching, thereby can't dynamically select optimum access network for the multimode terminal user, Business Stream be redirected on the network interface of new optimum.

Summary of the invention

The objective of the invention is to, at the mobile multimode device in the following broadband wireless mobile communication network, and the co-operating application scenarios of many equipment, a kind of module terminal business flow controlling system and device and method are provided, realize minimum cost expense and maximum resource utilization to help terminal.

To achieve these goals, the invention provides a kind of module terminal business flow controlling system, comprise a plurality of communication networks of forming by core net and Access Network, and at least one multimode terminal, described multimode terminal is equipped with a plurality of radio network interfaces that are complementary with communication network, in the Access Network of described communication network, comprise the network context monitoring modular; Described multimode terminal comprises device context monitoring submodule, service identification module, decision engine module, switching executing module, wherein:

Described network context monitoring modular is used for the network context parameter of monitoring Access Network in period of time T, and after the result that will the monitor process statistical average processing, passes to the decision engine module;

Described device context monitoring modular is used for the device context parameter of monitoring multi-module mobile terminal in period of time T, and after the result that will the monitor process statistical average processing, passes to the decision engine module;

Described service identification module is used for perception service stream characteristic parameter, and the Business Stream characteristic parameter that obtains is fed back to the decision engine module;

Described decision engine module is used for network context parameter, device context parameter and Business Stream characteristic parameter, and Business Stream is analyzed, and sets up the mapping relations between Business Stream and the interface, for Business Stream is selected radio network interface;

Described multimode terminal also comprises switching executing module, and being used for according to the decision engine module is that the wave point that single Business Stream is selected starts the hand off signaling flow process, traffic flow assignment or switch on the wireless receiving and dispatching interface.

Described multimode terminal also further comprises the execution result feedback module, is used for feeding back to the decision engine module the implementation status of the former result of decision with to the sensitivity of parameter, is made a strategic decision according to feedback modifiers by the decision engine module next time.

Described service identification module also is used to adopt the history feature of machine learning method statistical analysis record traffic stream, and at dissimilar Business Streams, sets up classification mechanism, improves the efficient of machine learning.

Described network context parameter comprises available bandwidth parameter, network delay parameter and the link signal mass parameter of Access Network.

Described network context monitoring module monitors network availability bandwidth and network delay parameter are by the active type measure mode, and improved bag is monitored algorithm.

Described device context parameter comprises wave point utilance parameter, battery electric quantity parameter and radio network interface transmitting-receiving power parameter.

Described Business Stream characteristic parameter comprises feature, Business Stream kind and the Business Stream of the Business Stream desirability parameter to service quality;

The history feature of described Business Stream is the history feature of the Business Stream of packet size, Mean Speed parameter.

The mapping relations that described decision engine module is set up between Business Stream and the interface are to use Fuzzy Multi-Attribute Decision Making to carry out.

Described decision engine module is to adopt the pattern of input, output, feedback to carry out work;

Wherein, input variable is network context parameter, device context parameter, Business Stream characteristic parameter;

Output variable is the mapping relations of Business Stream and radio network interface;

Feedback quantity is to obtain from the execution result feedback module, is used for the auxiliary decision-making next time of revising.

The foundation that described decision engine module is made a strategic decision is the network cost function, and described network cost function is by the network context parameter, and parameters such as device context parameter and Business Stream feature are set up and formed, and are expressed as follows:

fun _Net＝W _netpara _net+W _equippara _equip+W _flowpara _flow

Wherein, para _NetExpression network context parameter, W _NetThe weight of expression network context parameter, para _EquipThe indication equipment context parameters, W _EquipThe weight of indication equipment context parameters, para _FlowExpression Business Stream characteristic parameter, W _FlowThe weight of expression Business Stream characteristic parameter;

Described weight sum is 1, i.e. W _Net+ W _Equip+ W _Flow=1, the size of weight obtains according to posterior infromation before, and finely tunes according to the parameter of execution result feedback module feedback.

Described multi-module mobile terminal is equipped with a plurality of Care-of Address, i.e. a main Care-of Address and a plurality of sub-Care-of Address, a plurality of sub-Care-of Address and main Care-of Address have corresponding relation, according to binding update messages result relatively, the Business Stream of coupling are directed on the new radio network interface.

Described a plurality of communication network is the GPRS communication network, UMTS communication network, the combination of two or more in infrared network, wlan network, WiMAX communication network, the bluetooth communication network;

Described multimode terminal comprises a plurality of corresponding radio network interfaces, is respectively two or more the combination in GPRS interface, UMTS interface and infrared interface, wlan network interface, WiMAX communications network interface, the bluetooth communication network interface;

Described multimode terminal comprises two kinds or the combination of two or more Business Streams in electronic mail service stream, file downloading service stream, voice service stream and the multimedia service stream.

For realizing that the object of the invention also provides a kind of communication network of multimode terminal service stream control, form by core net and Access Network, in the described Access Network, comprise the network context monitoring modular, described network context monitoring modular, the network context parameter that is used for monitoring Access Network in period of time T, and the result that will monitor passes to multimode terminal through after the statistical average processing.

Described communication network is for being GPRS communication network, UMTS communication network, the combination of two or more in infrared network, wlan network, WiMAX communication network, the bluetooth communication network.

For realizing that the object of the invention more provides a kind of multimode terminal of Business Stream control, comprise device context monitoring submodule, service identification module, decision engine module, switching executing module, wherein:

The multimode terminal of described Business Stream control, also further comprise the execution result feedback module, be used for feeding back to the decision engine module, make a strategic decision according to feedback modifiers next time by the decision engine module the implementation status of the former result of decision with to the sensitivity of parameter.

For realizing that the object of the invention further provides a kind of module terminal business flow controlling method, may further comprise the steps:

Steps A, in period of time T, Access Network is monitored its network context parameter, passes to multimode terminal; Multimode terminal is monitored its device context parameter, then network context parameter, the device context parameter of monitoring is carried out statistical average and handles; Simultaneously, multimode terminal perception service stream characteristic parameter, the Business Stream characteristic parameter of acquisition;

Step B, multimode terminal is analyzed Business Stream according to network context parameter, device context parameter and a plurality of parameters of Business Stream feature, sets up the mapping relations between Business Stream and the interface, for Business Stream is selected radio network interface;

Step C is that the wave point that single Business Stream is selected starts the hand off signaling flow process according to multimode terminal, a traffic flow assignment or switch on the wireless receiving and dispatching interface.

Described module terminal business flow controlling method also comprises the following steps:

Step D, multimode terminal is revised decision-making next time according to the implementation status of the former result of decision with to the sensitivity of parameter.

Described steps A comprises the following steps:

Steps A 1, in period of time T, the Access Network of communication network is monitored a plurality of network context parameters of its available bandwidth, network delay and link signal quality, and the result that will monitor passes to the decision engine module of multimode terminal through after the statistical average processing;

Steps A 2, in period of time T, the device context detection module of multimode terminal is monitored its wave point utilance, battery electric quantity and a plurality of device context parameters of radio network interface transmitting-receiving power, and the result that will monitor passes to the decision engine module of multimode terminal through after the statistical average processing;

Steps A 3, feature, Business Stream kind and the Business Stream of the service identification module perception new service flow of multimode terminal is to a plurality of Business Stream characteristic parameters such as desirability of service quality, adopt the history feature of machine learning method statistical analysis record traffic stream, and at dissimilar Business Streams, set up classification mechanism, the Business Stream characteristic parameter that obtains is fed back to the decision engine module of multimode terminal.

In steps A 1, network context monitoring module monitors network monitor available bandwidth and network delay parameter are by the active type measure mode, and improved bag monitors algorithm, comprise the following steps:

Steps A 11, structural exploration packet on the transmitting terminal multimode terminal, this probe data packet is divided into big bag and parcel;

Steps A 12, the transmission of transmitting terminal multimode terminal is how right to probe data packet, and the right order of transmission detection packet is that bag is all stamped timestamp and numbered with sending replacing mutual with parcel when these detection datas wrap in the transmitting terminal transmission greatly;

Steps A 13, the receiving terminal multimode terminal receives probe data packet, whenever receives a probe data packet and all it is stamped timestamp;

Steps A 14, receiving terminal multimode terminal are checked the detection data packet number that receives, and judge whether check the probe data packet order that receives conforms to transmitting terminal multimode terminal sending order; If do not conform to, probe data packet is abandoned, forward steps A 11 to, restart; If out of order phenomenon do not occur, then enter steps A 15;

Steps A 15, according to the timestamp of the probe data packet that receives, calculate respectively bag to the time interval, promptly the every pair of probe data packet arrives the time difference of receiving terminal respectively;

Steps A 16 is judged and is checked that whether the right time interval of parcel is greater than the big right time interval of bag; If parcel between interval greater than big bag between the time interval, then this measurement is invalid, returns steps A 11, restarts; Otherwise enter steps A 17;

Steps A 17 checks whether the right time interval of big bag is identical, if it is identical to wrap the right time interval greatly, then this measurement is invalid, returns steps A 11, restarts; Otherwise enter steps A 18 computing network effective bandwidths, and steps A 110 computing network time delays;

Steps A 18, the size in the time interval that bigger bag is right is taken out the less time interval;

Steps A 19, computing network effective bandwidth B=S/T _Min, wherein S is the packet size of big detection packet, T _MinBe to wrap that less time interval of centering greatly;

Steps A 110, relatively at interval just the time of reception of each packet stabs the difference of stabbing with transmitting time the delivery time of the packet of Fa Songing, finds out delivery time minimal data bag at interval, and the transmitting time of taking out this packet is stabbed and the time of reception stamp;

Steps A 111 is stabbed and the time of reception stamp according to the transmitting time of taking out, and utilizes linear programming method to reduce owing to send main frame and receive the asynchronous computing network time delay error that brings of host clock, calculates network delay relatively accurately.

Describedly after steps A 111, also comprise the following steps:

Steps A 112 on access network, by the function interface that calling system provides, is gathered the link signal quality in real time;

Steps A 113 in the time cycle, is handled the monitoring result of the network effective bandwidth that calculates, network delay and link signal mass parameter respectively by the statistical average method, pass to multimode terminal.

In the described steps A 2, a plurality of device context parameters of device context monitoring module monitors multi-module mobile terminal, and the result that will monitor comprises the following steps: through the statistical average processing

Steps A 21 on portable terminal, by the function interface that device context monitoring modular calling system provides, is gathered equipment interface utilance, battery electric quantity and the radio network interface transmitting-receiving power parameter of portable terminal in real time;

Steps A 22 in period of time T, is handled parameters such as the equipment interface utilance of collecting, battery electric quantity and radio network interface transmitting-receiving power respectively by the statistical average method.

In step B, the history feature of described statistical analysis record traffic stream specifically comprises the following steps

Service identification module adopts the method for machine learning, and analytic record Business Stream kind, Business Stream feature and Business Stream be to the demand of QoS parameter, the history feature of the Business Stream of statistical analysis record data bag size, Mean Speed parameter.

Described big bag is that the IP head adds request of ICMP timestamp and response message, and the packet of additional data;

Described parcel is that the IP head adds request of ICMP timestamp and response message, without any the packet of additional data.

Among the described step C, the described mapping relations of setting up between Business Stream and the interface comprise the following steps:

Use Fuzzy Multi-Attribute Decision Making to set up rational mapping relations between Business Stream and the interface, wherein,

The foundation of described decision-making technique is the network cost function, and described network cost function is by the network context parameter, and parameters such as device context parameter and Business Stream feature are set up and formed, and can be expressed as follows:

fun _Net＝W _netpara _net+W _equippara _equip+W _flowpara _flow

Among the described step D, described switching comprises the following steps:

The invention has the beneficial effects as follows: module terminal business flow controlling system of the present invention and device and method, can be according to the various traffic streams feature, Business Stream is to the demand of service matter parameter, the present load of different access networks, factors such as equipment interface utilance and battery electric quantity, reasonably distribution service flows between a plurality of network interfaces of same portable terminal, to obtain minimum cost expense and maximum resource utilization, simultaneously, can also guarantee when network condition and Business Stream feature change, these change perception in time, and realize the quick switching of single Business Stream between distinct interface.

Description of drawings

Fig. 1 is the application scenarios figure of a kind of typical multi-mode terminal service system;

Fig. 2 is the schematic diagram of module terminal business flow controlling system of the present invention;

Fig. 3 is a module terminal business flow controlling method flow diagram of the present invention;

Fig. 4 is a parameter monitoring process flow diagram of the present invention;

Fig. 5 is available bandwidth of the present invention and network delay monitoring implementation flow chart.

Embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer,, a kind of module terminal business flow controlling system of the present invention and device and method are further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.

Be based on the network of all-IP system based on the next generation network of IPv6 agreement, the structure of whole network is to be made of core net and Access Network, core net is carried out data forwarding by router, the entity title of using in whole network can change flexibly, for example WLAN (Wireless Local Area Network, WLAN) in, the mobile subscriber is called portable terminal or mobile node, (AccessPoint AP) is linked into router to portable terminal by access point; And in cdma network, portable terminal is to be linked in the network by the base station.

In the present invention, a kind of module terminal business flow controlling system and device and method are provided, it is by the method for expansion mobile IP protocol (IPv6 agreement), thereby be implemented in the separation of Business Stream on the same multimode terminal (business data flow), single Business Stream from a wave point to the seamless switching another wave point, data forwarding between a plurality of equipment and stream switch, can also be implemented on the multimode terminal according to the Business Stream feature, Business Stream is to the demand of QoS parameter, factors such as access network situation and utilization rate of equipment and installations, and by the mutual cooperation relation between the multimode terminal, for Business Stream is selected optimum wireless receiving and dispatching interface, to obtain minimum cost expense and maximum resource utilization, simultaneously, can guarantee when network condition and Business Stream feature change, these change perception in time, realize the quick switching of single Business Stream between distinct interface.

Wherein, mobile IP protocol (IPv6 agreement, the RFC3775 standard) is three layers of international agreement of next generation network, it is by home address (Home of Address, HoA) indicate mobile node (Mobile Node, MN) identity is with Care-of Address (Care of Adrress, CoA) position of sign mobile node.When mobile node during at home network, (Corresponding Node CN) communicates by home address with communication node.Mobile IPv 6 protocol has solved roaming and the switching problem of mobile node in network.

Multimode terminal service stream control system among the present invention comprises a plurality of communication networks of being made up of core net and Access Network, and a plurality of multimode terminal 1.

As shown in Figure 1, communication network of the present invention can be GPRS (Gerneral PackerRadio Service, GPRS) network 2, or universal mobile telecommunications system (Universal MobileTelecommunication System, UMTS) network 3, or infrared network 4, or micro-wave access global inter communication network (Worldwide Interoperability for Microwave Access, WiMAX) (not shown), or WLAN (Wireless Local Area Network, WLAN) combination of two or more of (not shown) etc.

As a kind of embodiment, the embodiment of the invention illustrates multimode terminal service stream control system of the present invention with the system of GPRS network 2, UMTS network 3 and infrared network 4 compositions.But, should be noted that system of the present invention is not limited in above-mentioned communication network composition, it also can be by existing, and perhaps following other communication networks that can be combined in the multi-mode communication network are formed.

Described multimode terminal 1 comprises transmitting terminal multimode terminal and receiving terminal multimode terminal, and described multimode terminal 1 is equipped with a plurality of radio network interfaces that are complementary with communication network.

As a kind of embodiment, as shown in Figure 2, the described multimode terminal 1 of the embodiment of the invention is equipped with 3 radio network interfaces, is respectively GPRS interface 27, UMTS interface 28 and infrared interface 29.Concurrent running 4 kinds of Business Streams on the multimode terminal 1, is respectively that Email (Email) Business Stream 210, file are downloaded (FTP) Business Stream 220, speech (VoIP) Business Stream 230 and multimedia service stream 240.

Be to be understood that, GPRS interface 27 in the present embodiment, UMTS interface 28 and infrared interface 29 and Email (Email) Business Stream 210, file are downloaded (FTP) Business Stream 220, speech (VoIP) Business Stream 230 and multimedia service stream 240 and only be used for example, and be not as a limitation of the invention.Corresponding with WiMAX network (not shown), wlan network (not shown), described radio network interface can also be WiMAX interface (not shown), WLAN interface (not shown) etc., and described Business Stream also can also be the Business Stream of other corresponding kinds.

As shown in Figure 2, module terminal business flow controlling system of the present invention in Access Network, comprises network context monitoring modular 21; Described multimode terminal 1 comprises device context monitoring modular 22, service identification module 23, decision engine module 24, switching executing module 25, execution result feedback module 26.

Described network context monitoring modular 21, the a plurality of network context parameters such as available bandwidth, network delay and link signal quality that are used for monitoring Access Network in period of time T, and the result that will monitor passes to the decision engine module 24 of multimode terminal 1 through after the statistical average processing.

Wherein, preferably, network context parameters such as described available bandwidth, network delay are by the active type measure mode, and utilize improved bag that algorithm is monitored to obtain.

Described device context monitoring modular 22, the a plurality of device context parameters such as wave point utilance, battery electric quantity and radio network interface transmitting-receiving power that are used for monitoring multi-module mobile terminal in period of time T, and the result that will monitor passes to decision engine module 24 through after the statistical average processing.

Described service identification module 23, be used for feature, Business Stream kind and the Business Stream of perception new service flow a plurality of Business Stream characteristic parameters such as desirability to service quality, adopt the history feature of machine learning method statistical analysis record traffic stream, and at dissimilar Business Streams, set up classification mechanism, improve the efficient of machine learning, the Business Stream characteristic parameter that obtains is fed back to decision engine module 24.

The history feature of described Business Stream is the history feature of the Business Stream of a plurality of parameters such as packet size, Mean Speed.

Described decision engine module 24, be used for according to network context monitoring modular 21, a plurality of parameters such as the network context parameter that device context monitoring modular 22 and Business Stream identification module 23 feed back, device context parameter and Business Stream feature, Business Stream is analyzed, the use Fuzzy Multi-Attribute Decision Making is set up the mapping relations between Business Stream and the interface, is that Business Stream is selected radio network interface.

Decision engine module 24 adopts the pattern of input, output, feedback to carry out work.Wherein, input variable is network context parameter, device context parameter, Business Stream characteristic parameter; Output variable is the mapping relations of Business Stream and radio network interface; Feedback quantity then is to obtain from execution result feedback module 26, is used for the auxiliary decision-making next time of revising.

Switching executing module 25 is used for starting the hand off signaling flow process according to the wave point that decision engine module 24 is selected for single Business Stream, traffic flow assignment or switch on the wireless receiving and dispatching interface.

Execution result feedback module 26 is used for feeding back to decision engine module 24 the implementation status of the former result of decision with to the sensitivity of parameter, is made a strategic decision according to feedback modifiers by decision engine module 24 next time.

Module terminal business flow controlling system of the present invention, network context monitoring modular 21 and device context monitoring modular 22 pass to decision engine module 24 to network context that monitors in the cycle at certain hour and device context parameter afterwards through the statistical average processing.Service identification module 23 utilizes the method for machine learning respectively these several Business Streams to be learnt, the feature of difference perception service stream, Business Stream kind and Business Stream are to the desirability of service quality, the history feature of analytic record Business Stream, and Business Stream set up rational classification mechanism, then the analysis result to Business Stream is passed to decision engine module 24, simultaneously, execution result feedback module 26 also feeds back to decision engine module 24 to the previous result of decision, this decision engine module 24 is taken all factors into consideration the various parameters that monitoring modular and service identification module 23 transmit, and the information of transmitting with reference to execution result feedback module 26, the method for utilizing Fuzzy Multiple Attribute Decision Making is that every Business Stream is selected the most rational radio network interface.

Describe the multimode terminal service stream control system course of work of the present invention below in detail, promptly the invention provides a kind of control method of multimode terminal service stream, as shown in Figure 3, this method comprises the following steps:

Step S100, in period of time T, network context monitoring modular 21 a plurality of network context parameters such as monitoring its available bandwidth, network delay and link signal quality of the Access Network of communication network pass to multimode terminal 1; A plurality of device context parameters such as multimode terminal 1 its wave point utilance of monitoring, battery electric quantity and radio network interface transmitting-receiving power carry out statistical average with network context parameter, the device context parameter of monitoring to handle then; Simultaneously, the feature of multimode terminal 1 perception new service flow, Business Stream kind and Business Stream are to a plurality of Business Stream characteristic parameters such as desirability of service quality, adopt the history feature of machine learning method statistical analysis record traffic stream, and at dissimilar Business Streams, set up classification mechanism, the Business Stream characteristic parameter that obtains is fed back to the decision engine module 24 of multimode terminal 1.

Network context observation process of the present invention as shown in Figure 4, concrete steps are as follows:

Step S110, in period of time T, network context monitoring modular 21 a plurality of network context parameters such as monitoring its available bandwidth, network delay and link signal quality of the Access Network of communication network, and the result that will monitor passes to the decision engine module 24 of multimode terminal 1 through after the statistical average processing.

As a kind of enforceable mode, a plurality of network context parameters such as the available bandwidth of the Access Network monitoring network of communication network and network delay obtain by active monitoring mode monitoring.

Wherein, active monitoring mode is a kind of in the common two class IP network performance monitoring methods, it utilizes monitoring tool on purpose initiatively to produce the monitoring flow on selected monitoring point, injects network, and comes the performance of phase-split network according to the transmission situation of monitoring Business Stream.

As a kind of enforceable mode, in the embodiment of the invention, the monitoring of the available bandwidth of the Access Network of communication network can be undertaken by Cprobe method, Pathload method, TOPP algorithm.

Preferably, in the present invention, be by active monitoring, utilize improved bag that algorithm monitors is obtained available bandwidth and network delay.

Described improved bag is to algorithm, is that (Access Point sends detection packet between AP), and this detection packet sends to access point after structure on the multimode terminal 1 is finished, with the available bandwidth and the network delay of monitoring final jump at multimode terminal 1 and Network Access Point.

This algorithm has overcome classical bag some shortcomings to algorithm, and this algorithm computation amount is little, and complexity is low, and the accuracy of the network bandwidth that obtains can satisfy the requirement of system.

As shown in Figure 5, the step of monitoring available bandwidth and network delay is as described below in the embodiment of the invention:

Step S111, structural exploration packet on the transmitting terminal multimode terminal, this probe data packet is divided into big bag and parcel;

Wherein, big bag is meant that the IP head is added with network control message agreement (Internet Control MessageProtocol, ICMP) timestamp request and response message, and added the packet of certain Bit data.

In embodiments of the present invention, the additional data of big bag can be unfixed, carry out suitable adjustment according to actual conditions, and its data are common data, and just the head in data adds the network control message agreement;

Parcel is meant that the IP head is added with request of ICMP timestamp and response message, but without any the packet of additional data.Preferably, the size of parcel is 40bytes.

Step S112, the transmission of transmitting terminal multimode terminal is how right to probe data packet, and the right order of transmission detection packet is that bag is all stamped timestamp and numbered with sending replacing mutual with parcel when these detection datas wrap in the transmitting terminal transmission greatly;

Step S113, the receiving terminal multimode terminal receives probe data packet, whenever receives a probe data packet and all it is stamped timestamp;

Step S114, receiving terminal multimode terminal check the detection data packet number that receives, and judge whether check the probe data packet order that receives conforms to transmitting terminal multimode terminal sending order; If do not conform to, then out of order phenomenon has appearred in explanation, and this measurement is invalid, and probe data packet is abandoned, and forwards step S111 to, restarts; If out of order phenomenon do not occur, then enter step S115;

Step S115, the network context monitoring modular of Access Network be according to the timestamp of the probe data packet that receives, calculate respectively bag to the time interval, promptly the every pair of probe data packet arrives the time difference of receiving terminal respectively;

Step S116, the network context monitoring modular of Access Network judge that whether the right time interval of inspection parcel is greater than the big right time interval of bag; If parcel between interval greater than big bag between the time interval, then this measurement is invalid, returns step S111, restarts; Otherwise enter step S117;

Because packet is through same path, the time of big bag transmission should be longer than the time that parcel needs, so parcel between the time interval should less than big bag between the time interval, therefore, if parcel between interval greater than big bag between the time interval, illustrate to exist and disturb that then this measurement is invalid.

Step S117, whether right time interval of the big bag of network context monitoring modular inspection of Access Network is identical, if it is identical to wrap the right time interval greatly, then this measurement is invalid, returns step S111, restarts; Otherwise enter step S118 computing network effective bandwidth B, and step S1110 computing network time delay D;

Because when carrying out data packet transmission, be a kind of perfect condition without any interference on the channel, and this perfect condition is non-existent, so the used time must be different when the big bag of transmission, just big bag between the time interval should difference be arranged slightly, therefore, whether right time interval of the big bag of network context monitoring modular inspection of Access Network is identical, if it is identical to wrap the right time interval greatly, then certainly exist problem, this measurement is invalid.

Step S118, the size in the time interval that the bigger bag of network context monitoring modular of Access Network is right is taken out less time interval T _Min

Step S119, the network context monitoring modular computing network effective bandwidth of Access Network, B=S/T _Min, wherein S is the packet size of big detection packet, T _MinBe to wrap that less time interval of centering greatly;

Step S1110, the delivery time of the packet that the network context monitoring modular of Access Network relatively sends at interval, just the time of reception of each packet stabs the difference of stabbing with transmitting time, find out delivery time interval minimal data bag, and take out the transmitting time stamp T1 and the time of reception stamp T2 of this packet;

Step S1111, the network context monitoring modular of Access Network stabs T1 according to the transmitting time of taking out among the step S1110 and time of reception stabs T2, utilize linear programming method to reduce owing to send main frame and receive the asynchronous computing network time delay error that brings of host clock, calculate relatively accurate network delay D;

Time delay error mainly contains two source of errors: one is influences such as resolution, skew and the shake measurement accuracy of timekeeping of monitoring host computer system clock and the error that produces is called clocking error here; The 2nd, because the transmitting-receiving bag timestamp of monitoring record is not the monitoring error that real transmitting-receiving bag produces constantly, be called site error here.

In embodiments of the present invention, calculate forward direction time delay, reverse time delay, utilize the method for linear programming to reduce error then by sending the active probe packet.

Wherein, described linear programming method is a kind of prior art, it is the method for eliminating error, the method of similarly eliminating error also has figure planing method, linear regression method etc., using linear programming method to eliminate error in the specific embodiments of the invention and only be used for example, is not limitation of the invention.

For the link signal mass parameter, be that the mode of the function interface that provides by calling system is gathered in real time.

Wherein, the link signal mass parameter comprises signal strength signal intensity, parameters such as the signal to noise ratio of link, these parameters can the calling system function interface, for example in the WLAN agreement, two layers of all frame that receives all corresponding a state information states structure, comprised parameters such as received signal intensity, signal to noise ratio in this structure, obtain current demand signal intensity, signal to noise ratio therefore can driving from two layers network interface card.

In addition, in the certain hour period T, network context monitoring modular 21 in the Access Network of communication network passes to these parameters the decision engine module 24 of multimode terminal 1 then to the network availability bandwidth, the network delays that calculate and the link signal quality that the collects average treatment that takes statistics respectively.

Step S120, in period of time T, the device context detection module of multimode terminal 1 is monitored a plurality of device context parameters such as its wave point utilance, battery electric quantity and radio network interface transmitting-receiving power, and the result that will monitor passes to the decision engine module 24 of multimode terminal 1 through after the statistical average processing.

Mode by the calling system function interface, collecting device interface utilance, battery electric quantity and radio network interface are received and dispatched power in real time, then, in period of time T, the equipment interface utilance that obtains, battery electric quantity, the radio network interface transmitting-receiving power average treatment that takes statistics respectively.

Wherein, these parameters obtain respectively corresponding different system function interface, obtaining of equipment interface utilance for example, at wlan network, the Hook Function mechanism that can utilize Netfilter to provide, statistics wireless device interface utilance.

Step S130, feature, Business Stream kind and the Business Stream of the service identification module 23 perception new service flow of multimode terminal 1 is to a plurality of Business Stream characteristic parameters such as desirability of service quality, adopt the history feature of machine learning method statistical analysis record traffic stream, and at dissimilar Business Streams, set up classification mechanism, the Business Stream characteristic parameter that obtains is fed back to the decision engine module 24 of multimode terminal 1.

Multimode terminal 1 is when multimode terminal is linked into Access Network or after being linked into Access Network, the feature of perception new service flow, Business Stream kind and Business Stream are to a plurality of Business Stream characteristic parameters such as desirability of service quality, adopt the history feature of machine learning method statistical analysis record traffic stream, and at dissimilar Business Streams, set up classification mechanism, improve the efficient of machine learning, the Business Stream characteristic parameter that obtains is fed back to the decision engine module 24 of multimode terminal 1.

The service identification module 23 of this multimode terminal 1 is taked machine learning method, for example Bayes classifier carries out discriminator to Business Stream, the feature of perception new service flow, wherein, Bayes classifier is summarized grader by training set (classified example collection) training (study), and utilizes grader that the data that do not have classification are classified.

Step S200, the decision engine module 24 of multimode terminal 1 is according to a plurality of parameters such as network context parameter, device context parameter and Business Stream feature that feed back, Business Stream is analyzed, using Fuzzy Multi-Attribute Decision Making to set up rational mapping relations between Business Stream and the interface, is that Business Stream is selected optimum radio network interface.

Wherein, Fuzzy Multi-Attribute Decision Making is to utilize existing decision information by certain mode to one group of alternative scheme ordering according to qualifications.

Comprise the steps:

Step S210 obtains decision information.Decision information comprises the content of two aspects: attribute weight and property value.In the embodiment of the invention, decision engine module 24 used property values are to obtain from network context monitoring modular 21, device context monitoring modular 22 and service identification module 23.And attribute weight is to obtain from the previous result of decision, promptly obtains from posterior infromation.

Step S220 carries out integrated and various schemes is sorted decision information.

The decision engine module 24 of multimode terminal 1 adopts the pattern of input, output, feedback to carry out work.Wherein, input variable is network context parameter, device context parameter, Business Stream characteristic parameter; Output variable is the mapping relations of Business Stream and radio network interface; Feedback quantity then is to obtain from execution result feedback module 26, is used for the auxiliary decision-making next time of revising.

Preferably, as a kind of enforceable mode, in the embodiment of the invention, the foundation that the decision engine module 24 of multimode terminal 1 is made a strategic decision is the network cost function.Described network cost function is by the network context parameter, and parameters such as device context parameter and Business Stream feature are set up and formed, and can be expressed as follows:

fun _Net＝W _netpara _net+W _equippara _equip+W _flowpara _flow (1)

Wherein, para _NetExpression network context parameter, W _NetThe weight of expression network context parameter, para _EquipThe indication equipment context parameters, W _EquipThe weight of indication equipment context parameters, para _FlowExpression Business Stream characteristic parameter, W _FlowThe weight of expression Business Stream characteristic parameter.

Described weight sum is 1, i.e. W _Net+ W _Equip+ W _Flow=1, the size of weight obtains according to posterior infromation before, and finely tunes according to the parameter of execution result feedback module 26 feedbacks.

The network cost function value that the decision engine module 24 of this multimode terminal 1 relatively calculates, with the pairing wireless receiving and dispatching interface of the network cost function value transmitting business stream of minimum, then the decision engine module 24 of this multimode terminal 1 feeds back to the result of decision-making the switching executing module 25 of multimode terminal 1.

Step S300 is that the wave point that single Business Stream is selected starts the hand off signaling flow process according to the decision engine module 24 of multimode terminal 1, a traffic flow assignment or switch on the wireless receiving and dispatching interface.

The mobile IP scenario of prior art is that all Business Streams all are directed on a kind of wireless access technology, and it is not to meet very much the Business Stream dynamic assignment of different qualities transmission requirements to the different Radio Links.

Therefore, preferably, the present invention makes amendment to existing mobile IP scenario, the granularity of switching is segmented to single Business Stream from individual equipment, thereby realized that efficiently Business Stream is redirected fast.

Multi-module mobile terminal of the present invention is equipped with a plurality of Care-of Address, and promptly (mainCoA, mCoA) (subsidiary CoA, sCoA), a plurality of sub-Care-of Address and main Care-of Address have corresponding relation to a main Care-of Address with a plurality of sub-Care-of Address.In the whole service flow control process, the main Care-of Address of multimode terminal 1 is constant, and the core net in each communication network can be stored the information through all streams of itself, i.e. source address, destination address and stream label.

Among the present invention, also at traditional Binding Update (Binding Update, BU) increase an address object in the message, this object comprises the old sub-Care-of Address of multimode terminal 1, the main Care-of Address of multimode terminal 1, the communication node of communicating by letter (Correspondence Node, address CN) with multimode terminal 1.

When binding update messages arrived the core net of communication network, the core net of communication network compared the Business Stream information of storage and the address object in the binding update messages, then the Business Stream that is complementary is directed on the new radio network interface.

Step S400, the execution result feedback module 26 of multimode terminal 1 feeds back to decision engine module 24 the implementation status of the former result of decision with to the sensitivity of parameter, is made a strategic decision according to feedback modifiers by decision engine module 24 next time.

Execution result feedback module 26 will before once or repeatedly according to the result of decision of decision engine module 24, the implementation status of the result of decision of the mapping relations between Business Stream and the interface, feed back to decision engine module 24, simultaneously also this class Business Stream is fed back to decision engine module 24 together to the network bandwidth, the isoparametric sensitivity of network delay, so that decision engine module 24 can be with reference to these feedback informations when carrying out decision-making, weight to each parameter is finely tuned, for Business Stream is selected more excellent radio network interface.

Module terminal business flow controlling method of the present invention, by according to the various traffic streams feature, the Business Stream kind, Business Stream is to the demand of QoS parameter, the available bandwidth of network, network delay, parameters such as equipment interface utilance and battery electric quantity, reasonably distribution service flows between a plurality of network interfaces of same portable terminal, to obtain minimum cost expense and maximum resource utilization, guarantee simultaneously when network condition and Business Stream feature change, these change perception in time, and realize the quick switching of single Business Stream between distinct interface.

Experiment shows, the result of decision-making is: Email (Email) Business Stream 210 is assigned on the wireless network GPRS interface 27, speech (VoIP) Business Stream 230 and multimedia service stream 240 are assigned with on the wireless network UMTS interface 28, and file is downloaded (FTP) Business Stream 220 and is assigned on the wireless network infrared interface 29.Then, the wireless receiving and dispatching interface that switching executing module 25 is selected for each Business Stream according to decision engine module 24 starts relevant signaling process, carry out handover operation, a traffic flow assignment or switch on the wireless receiving and dispatching interface, the distribution and the handoff procedure of Business Stream have been finished, this process is to finish under the situation that does not need the user to participate in, thereby can make the user enjoy minimum cost expense and maximum resource utilization.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims

1. module terminal business flow controlling system, comprise a plurality of communication networks of forming by core net and Access Network, and at least one multimode terminal, described multimode terminal is equipped with a plurality of radio network interfaces that are complementary with communication network, it is characterized in that, in the Access Network of described communication network, comprise the network context monitoring modular; Described multimode terminal comprises device context monitoring modular, service identification module, decision engine module, switching executing module, wherein:

2. module terminal business flow controlling system according to claim 1, it is characterized in that, described multimode terminal also further comprises the execution result feedback module, be used for the implementation status of the former result of decision with to the sensitivity of parameter, feed back to the decision engine module, make a strategic decision according to feedback modifiers next time by the decision engine module.

3. module terminal business flow controlling system according to claim 1 and 2, it is characterized in that, described service identification module, also be used to adopt the history feature of machine learning method statistical analysis record traffic stream, and at dissimilar Business Streams, set up classification mechanism, improve the efficient of machine learning.

4. module terminal business flow controlling system according to claim 1 and 2 is characterized in that, described network context parameter comprises available bandwidth parameter, network delay parameter and the link signal mass parameter of Access Network.

5. module terminal business flow controlling system according to claim 4 is characterized in that, described network context monitoring module monitors network availability bandwidth and network delay parameter are by the active type measure mode, and improved bag is monitored algorithm.

6. module terminal business flow controlling system according to claim 1 and 2 is characterized in that, described device context parameter comprises wave point utilance parameter, battery electric quantity parameter and radio network interface transmitting-receiving power parameter.

7. module terminal business flow controlling system according to claim 3 is characterized in that, described Business Stream characteristic parameter comprises feature, Business Stream kind and the Business Stream of the Business Stream desirability parameter to service quality;

8. module terminal business flow controlling system according to claim 2 is characterized in that, the mapping relations that described decision engine module is set up between Business Stream and the interface are to use Fuzzy Multi-Attribute Decision Making to carry out.

9. module terminal business flow controlling system according to claim 8 is characterized in that, described decision engine module is to adopt the pattern of input, output, feedback to carry out work;

10. module terminal business flow controlling system according to claim 9, it is characterized in that, the foundation that described decision engine module is made a strategic decision is the network cost function, described network cost function is by the network context parameter, parameters such as device context parameter and Business Stream feature are set up and are formed, and are expressed as follows:

fun _Net＝W _netpara _net+W _equippara _equip+W _flowpara _flow

11. module terminal business flow controlling system according to claim 1, it is characterized in that, described multi-module mobile terminal is equipped with a plurality of Care-of Address, i.e. a main Care-of Address and a plurality of sub-Care-of Address, a plurality of sub-Care-of Address and main Care-of Address have corresponding relation, according to binding update messages result relatively, the Business Stream of coupling is directed on the new radio network interface.

12. module terminal business flow controlling system according to claim 1, it is characterized in that, described a plurality of communication network is the GPRS communication network, UMTS communication network, the combination of two or more in infrared network, wlan network, WiMAX communication network, the bluetooth communication network;

13. the communication network of a multimode terminal service stream control, form by core net and Access Network, it is characterized in that, in the described Access Network, comprise the network context monitoring modular, described network context monitoring modular is used in period of time T the network context parameter of monitoring Access Network, and the result that will monitor passes to multimode terminal through after the statistical average processing.

14. the communication network of multimode terminal service stream control according to claim 13, it is characterized in that, described communication network is for being the GPRS communication network, the UMTS communication network, the combination of two or more in infrared network, wlan network, WiMAX communication network, the bluetooth communication network.

15. the multimode terminal of a Business Stream control is characterized in that, comprises device context monitoring submodule, service identification module, decision engine module, switching executing module, wherein:

16. the multimode terminal of Business Stream control according to claim 15, it is characterized in that, also further comprise the execution result feedback module, be used for the implementation status of the former result of decision with to the sensitivity of parameter, feed back to the decision engine module, make a strategic decision according to feedback modifiers next time by the decision engine module.

17. multimode terminal according to claim 15 or 16 described Business Stream controls, it is characterized in that, described service identification module, also be used to adopt the history feature of machine learning method statistical analysis record traffic stream, and at dissimilar Business Streams, set up classification mechanism, improve the efficient of machine learning.

18. the multimode terminal of Business Stream control according to claim 17, it is characterized in that, described multimode terminal comprises a plurality of corresponding radio network interfaces, is respectively two or more the combination in GPRS interface, UMTS interface and infrared interface, wlan network interface, WiMAX communications network interface, the bluetooth communication network interface;

19. a module terminal business flow controlling method is characterized in that, may further comprise the steps:

20. module terminal business flow controlling method according to claim 19 is characterized in that, also comprises the following steps:

21., it is characterized in that described steps A comprises the following steps: according to claim 19 or 20 described module terminal business flow controlling methods

22. module terminal business flow controlling method according to claim 21, it is characterized in that, in steps A 1, network context monitoring module monitors network monitor available bandwidth and network delay parameter are by the active type measure mode, and improved bag monitors algorithm, comprises the following steps:

23, module terminal business flow controlling method according to claim 22 is characterized in that, describedly also comprises the following steps: after steps A 111

24. module terminal business flow controlling method according to claim 21, it is characterized in that, in the described steps A 2, a plurality of device context parameters of device context monitoring module monitors multi-module mobile terminal, and the result that will monitor comprises the following steps: through the statistical average processing

25. module terminal business flow controlling method as claimed in claim 21 is characterized in that, in step B, the history feature of described statistical analysis record traffic stream specifically comprises the following steps

26. multimode terminal service stream control method according to claim 22 is characterized in that:

27., it is characterized in that among the described step C, the described mapping relations of setting up between Business Stream and the interface comprise the following steps: according to claim 19 or 20 described module terminal business flow controlling methods

fun _Net＝W _netpara _net+W _equippara _equip+W _flowpara _flow

28. module terminal business flow controlling method according to claim 20 is characterized in that, among the described step D, described switching comprises the following steps: