CN103052117A - Multi-stream transmission system and method for realizing flexible QoS (quality of service) in heterogeneous network - Google Patents
Multi-stream transmission system and method for realizing flexible QoS (quality of service) in heterogeneous network Download PDFInfo
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Abstract
The invention discloses a multi-stream transmission system and a method for realizing flexible QoS (quality of service) in a heterogeneous network. The system comprises a network control center, a service distributing and converging center, a main network, auxiliary networks and a mobile terminal, wherein the network control center is responsible for carrying out signaling interaction with the main network, the auxiliary network and the service distributing and converging center and selecting an auxiliary network; the service distributing and converging center is responsible for distributing and converging service of the main network and the auxiliary networks; the main network comprises a main network core network and a main network base station, and the mobile terminal is connected with the main network core network through the main network base station; each auxiliary network comprises an auxiliary network core network and an auxiliary network base station, and the mobile terminal is connected with the auxiliary network core network through the auxiliary network base station; and the mobile terminal supports multi-stream transmission. The invention also discloses a multi-stream transmission method for realizing flexible QoS in the heterogeneous network.
Description
Technical field
The present invention relates to the wireless communication technique field, relate in particular to the multithread transmission system and the method that realize flexible QoS in a kind of heterogeneous network.
Background technology
Current wireless communication technology develop rapidly, various wireless communication systems emerge in an endless stream, comprising GSM, IS-95, WLAN, WCDMA, WiMAX, LTE etc., densification along with wireless network deployment, the situation of the overlapping covering of wireless network is more and more common, and the concept of heterogeneous network is also just arisen at the historic moment.
Heterogeneous network is exactly the collection of network that refers to use different access technologies, different communication protocol, different system framework.Vertical switching aspect between the selection that now research of heterogeneous network is mainly concentrated on optimal network and heterogeneous network.
The research of current heterogeneous network has promoted significantly the user and has experienced and the network overall utility, but still has limitation, and for example portable terminal can only access a kind of network, and can not utilize the multiple network joint transmission.In some cases, as when carrying out video and data service, very high transmission rate request is often arranged, although select optimum network can satisfy professional basic demand, the multiple network parallel transmission can further improve transmission rate, promotes the user and experiences.
Summary of the invention
In order to overcome the deficiency of prior art structure, the invention provides the multithread transmission system and the method that realize flexible QoS in a kind of heterogeneous network, the communication source is divided into a plurality of data flow with business, by different Access Network transmission, then converges at Correspondent Node respectively.
In order to solve the prior art problem, the embodiment of the invention discloses the multithread transmission system that realizes flexible QoS in a kind of heterogeneous network.So-called flexible QoS just refers to that the transmission rate that network can provide is variable.Because portable terminal is when carrying out the multithread transmission, the quantity of auxiliary network, resource distribution, access strategy etc. are all in continuous variation, the transmission rate that a plurality of networks provide jointly also is unfixed, but again because master network can satisfy minimum qos requirement, so the multithread transmission system of the flexible QoS that this patent proposes is discussed under the basic qos requirement prerequisite of assurance.
In addition, this system is mainly for video traffic and data service.For video traffic, be the data encoding that will transmit two parts: basic layer and enhancement layer, wherein basic layer service is carried by master network, the necessary undistorted reliable payment of this partial data; The enhancement layer business can be by master network or the auxiliary network carrying, this partial data Best-Effort.For data service, the data of master network and auxiliary Internet Transmission are of equal importance, all require transmitting.
This system comprises with lower module:
The network control center: be responsible for carrying out the selection of Signalling exchange and auxiliary network with master network, auxiliary network and service distributing and fusion center;
Service distributing and fusion center: be responsible for shunting and the fusion of master network, auxiliary Network;
Master network: comprise master network core net, master network base station, portable terminal is connected with the master network core net by the master network base station;
Auxiliary network: comprise auxiliary network core net, auxiliary network base station, portable terminal by auxiliary network base station be connected the network core net and connect;
Portable terminal: support the multithread transmission.
Further, as preferably, described portable terminal further comprises:
Service distributing and Fusion Module: according to the decision-making of network side, be responsible for Business Stream in master network and auxiliary internetwork shunting and fusion;
Auxiliary network state monitoring modular: the auxiliary network coverage situation of monitoring portable terminal present position, the information of monitoring comprises auxiliary network of network type, signal strength signal intensity, time delay, shake and residential quarter ID, the data that monitor are recorded in auxiliary network list, and this auxiliary network list is sent to the network control center by master network;
Radio frequency transmission module: comprise at least two cover transceivers, transmit in order to multithread.
The invention also discloses the multithread transmission method of realizing flexible QoS in a kind of heterogeneous network, may further comprise the steps:
The service request step: when portable terminal or service distributing and fusion center need to send data, service requesting information is sent to the network control center, solicited message comprises the qos parameter that this business is required;
Master network distributes the available resources step: the network control center is at first to master network application available resources, and master network feeds back to the network control center with the own QoS that can support;
Auxiliary network is selected step: the network control center by master network to the auxiliary network list of mobile terminal request, portable terminal sends auxiliary network list by master network to the network control center, the QoS that the network control center is required according to professional remainder, and the parameter of each auxiliary network in the auxiliary network list, carry out the selection of optimum auxiliary network based on the simple weighted method in the multiattribute mode decision scheme;
Being implemented as follows of auxiliary network selection algorithm:
Auxiliary network selection algorithm is finished in the network control center.Its purpose is, the auxiliary network list of mobile terminal reporting is selected and sorted, and the auxiliary network that filters out is exactly to satisfy the network that QoS of survice requires.
The process that auxiliary network is selected is based on the simple weighted method in the multiattribute mode decision scheme.Its specific implementation can be divided into following a few step:
(1) obtain the QoS of survice requirement: the network control center extracts professional qos requirement, comprises the threshold value of throughput, time delay, shake, the error rate etc.
(2) obtain auxiliary network list parameter:
Auxiliary networking state monitoring module provides the information of auxiliary network list, comprises the parameters such as auxiliary bandwidth of network, time delay, shake, signal strength signal intensity, rate, the error rate.
The numbering difference 1,2 of auxiliary network list ... N, the qos parameter that wherein needs to consider always has M, is expressed as a
i, i=1 ..., M; Wherein stipulate a
1The expression bandwidth, a
2Expression time delay, a
3Expression shake, α
4Expression signal strength signal intensity, a
5The expression rate, a
6The expression error rate and other parameters.
(3) decision parameter normalization:
In this M kind qos parameter, we know that the value of bandwidth, signal strength signal intensity is the bigger the better, and time delay, shake, the error rate, the smaller the better, rate etc. are for more low better, so above-mentioned parameter simply can not be weighted contrast.
At first the parameters such as the time delay of each alternative auxiliary network, shake, the error rate, rate are got inverse, bandwidth and signal strength signal intensity are constant, obtain being g
i, i=1 ..., 6, namely
i=2，3，5，6...；g
i=a
i，i=1，4...；
The g that obtains like this
iAll be positively related value, but imperfection still, if the bandwidth of auxiliary network 1 is 5MHz, time delay is 5ms, the error rate is 1.2 * 10
-4, because the unit of parameters is different, need normalization.
Normalization:
Parameter after the normalization is d
i, i=1 ..., 5, M; The value of each parameter is to be the bigger the better after the normalization.Wherein stipulate d
1The expression bandwidth, d
2Expression time delay, d
3Expression shake, d
4Expression signal strength signal intensity, d
5The expression rate, d
6The expression error rate.
d
K, iThe normalized value that just represents the i parameter of k network.
(4) optimum auxiliary network is selected:
The performance of candidate network is expressed as Q, calculates with following formula:
Th wherein
iThe minimum threshold that just represents i parameter, the first half represents that the performance of this network just is 0, also just this network has been eliminated if any parameter surpasses thresholding in the time delay of network k, shake, rate in the Q value computing formula.
In the computing formula of Q value, w
K, iTo distribute d
K, iWeight.Select the maximum network of Q value as auxiliary network, and draw a table that sorts according to Q value size, during this is shown the Q value must all be on the occasion of.If the maximum network of Q value is refused the access of auxiliary business for a certain reason, then search the network of suboptimum according to this table.
Auxiliary network allocation available resources step: after finishing auxiliary network selection, the network control center sends service request to the auxiliary network of optimum, and auxiliary network is replied, if this auxiliary network can satisfy transmission requirement, then carries out next step; If can not satisfy, the auxiliary network of then selecting suboptimum in the auxiliary network that satisfies condition is initiating business request again, after auxiliary network and portable terminal connect, sends the affirmation instruction to the network control center;
The multithread transmitting step: the network control center sets up instruction to portable terminal and service distributing and fusion center initiation business respectively, the beginning of indication multithread transmission.
Further, as preferably, if be that portable terminal need to send data in the described service request step, then the network control center sets up instruction to portable terminal initiation business in the described multithread transmitting step, portable terminal is by master network and auxiliary network difference the transmission of data, and service distributing and fusion center merge these data.
Further, as preferably, if be that service distributing and fusion center need to send data in the described service request step, then the network control center sets up instruction to service distributing and fusion center initiation business in the described multithread transmitting step, service distributing and fusion center send data transfer command, part data communication device is crossed the master network transmission, and a part of data communication device is crossed auxiliary Internet Transmission.
Further, as preferably, after described multithread transmitting step, also comprise switch step between auxiliary network, specifically may further comprise the steps:
Be lower than certain thresholding if portable terminal monitors auxiliary network signal intensity, then start reporting of auxiliary network list, comprise each auxiliary network signal intensity and QoS information in the current wireless environment in the auxiliary network list;
The network control center carries out switch decision, if presently used auxiliary network can't provide service, then switches to other auxiliary networks, sends handover request to other auxiliary networks;
Auxiliary network is admitted handover request, carries out resource distribution, and returns handover request and reply;
Switching command is assigned to auxiliary network and service distributing and fusion center by the network control center;
After portable terminal is received switching command, return switching to auxiliary network and confirm.
Further, as preferably, comprise also that after described multithread transmitting step master network to auxiliary network switch step, specifically may further comprise the steps:
Master network is initiated handover request to the network control center;
When the network control center initiated handover request to the auxiliary network list of mobile terminal request or master network, to the mobile terminal request auxiliary network list of this moment, the auxiliary network list that portable terminal will real-time monitor reported the network control center;
The network control center carries out switch decision, if this moment auxiliary network conforms qos requirement, then initiate reconfiguration request to auxiliary network, ask auxiliary network allocation to the more resource of portable terminal;
Auxiliary network is finished resource and is distributed, returning reconfiguration request replys, the network control center initiates reconfigure command to master network, and master network is initiated reconfigure command to portable terminal, and indication master network and portable terminal carry out the sending and receiving of data flow according to the scheme of reshuffling;
Auxiliary network sends reconfigure command to service distributing and fusion center, indicates it to shunt by the scheme after reshuffling and merge.
Further, as preferably, after described multithread transmitting step, comprise that also auxiliary network to the master network switch step, specifically may further comprise the steps:
When auxiliary network signal is lower than certain thresholding, portable terminal triggers reporting of auxiliary network list, reports the parameter of current each auxiliary network;
The network control center carries out switch decision, finds currently can use without auxiliary network;
This moment, the network control center initiated the Connection Release order to auxiliary network, and auxiliary network is initiated the Connection Release order to portable terminal; After Connection Release was finished, auxiliary network was handed to shunting and fusion center to the packet sequence number of not success payment through the network control center;
The network control center initiates reconfiguration request, and can the inquiry master network bear auxiliary business, if master network can be born all or part of auxiliary business, returns reconfiguration request and reply, if can not admit this request, then refuses this request;
Middle master network is replied to the situation of bearing of auxiliary business according to reconfiguration request by the network control center, initiates reconfigure command to shunting and fusion center, and the indication shunting is heavily shunted with fusion center; The network control center also initiates reconfigure command, the indication of heavily shunting to master network and portable terminal simultaneously.
The present invention is by the multithread transmission of heterogeneous network, business is merotomized, respectively by different Access Network transmission, then converge at the transmission terminal point, like this, the portable terminal with multi-mode feature just can take full advantage of each Internet resources and carry out joint transmission, not only can improve service quality, promote the user and experience, can also take full advantage of the resource of each wireless network.
Description of drawings
When considered in conjunction with the accompanying drawings, by the following detailed description of reference, can more completely understand better the present invention and learn easily wherein many advantages of following, but accompanying drawing described herein is used to provide a further understanding of the present invention, consist of a part of the present invention, illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of to improper restriction of the present invention, wherein:
Fig. 1 is the multithread transmission system schematic diagram of realizing flexible QoS in a kind of heterogeneous network of the embodiment of the invention.
Fig. 2 is the multithread transmission method flow chart of realizing flexible QoS in a kind of heterogeneous network of the embodiment of the invention.
Fig. 3 is embodiment of the invention portable terminal initiating business request flow chart.
Fig. 4 is embodiment of the invention network side initiating business request flow chart.
Fig. 5 is handoff procedure flow chart between the auxiliary network of the embodiment of the invention.
Fig. 6 is that embodiment of the invention master network is to auxiliary network switching process flow chart.
Fig. 7 is that the auxiliary network of the embodiment of the invention is to master network handoff procedure flow chart.
Embodiment
Describe with reference to Fig. 1-7 pair embodiments of the invention.
For above-mentioned purpose, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, realize the multithread transmission system of flexible QoS in a kind of heterogeneous network, comprise with lower module:
The network control center 6: be responsible for carrying out the selection of Signalling exchange and auxiliary network with master network, auxiliary network and service distributing and fusion center 7;
Service distributing and fusion center 7: be responsible for shunting and the fusion of master network, auxiliary Network;
Master network: comprise master network core net 4, master network base station 1, portable terminal 3 is connected connection by master network base station 1 with the master network core net;
Auxiliary network: comprise auxiliary network core net 5, auxiliary network base station 2, portable terminal 3 by auxiliary network base station 2 be connected network core net 5 and connect;
Portable terminal 3: support the multithread transmission.Described portable terminal 3 further comprises: service distributing and Fusion Module: according to the decision-making of network side, be responsible for Business Stream in master network and auxiliary internetwork shunting and fusion; Auxiliary network state monitoring modular: the auxiliary network coverage situation of monitoring portable terminal present position, the information of monitoring comprises auxiliary network of network type, signal strength signal intensity, time delay, shake and residential quarter ID, the data that monitor are recorded in auxiliary network list, and this auxiliary network list is sent to the network control center by master network; Radio frequency transmission module: comprise at least two cover transceivers, transmit in order to multithread.
Portable terminal 3 can carry out the multithread transmission by master network and auxiliary network, and portable terminal 3 is attached to a master network, and can access simultaneously a plurality of auxiliary networks.Analyze for ease of explanation, in the related network model of the embodiment of the invention, communication process, all suppose only to select in the transmission course an auxiliary network, but situation about communicating with a plurality of auxiliary networks simultaneously is still in protection range of the present invention.
Carrying out multithread when transmission, the business that transmit is divided into two parts, and a part is by the master network transmission, and a part is by auxiliary Internet Transmission, and the concrete distribution of these two parts data is finished by the network control center 6 and service distributing and fusion center 7.
The network architecture that relates in this inventive embodiments and the main distinction of current various wireless communication systems have:
1, portable terminal 3 is multi-modulation scheme intelligent terminals, has the ability that accesses simultaneously a plurality of wireless networks;
2, each portable terminal 3 must be attached on the master network, can also access a plurality of auxiliary networks simultaneously, and wherein master network is changeless, and the available secondary network is determined by portable terminal wireless environment of living in;
3, the network control center 6 and service distributing and fusion center 7 are arranged in the described network side, the network control center 6 is responsible for carrying out Signalling exchange with master network, auxiliary network, and service distributing and fusion center 7 are responsible for professional shunting and fusion.
4, the described network control center 6 and service distributing and fusion center 7 form a control unit, master network and the auxiliary network in a zone of management.Have interface to connect between the control unit of zones of different, a plurality of control unit composition control nets are controlled the multithread transport service of whole master network and auxiliary network.
As shown in Figure 2, the invention also discloses the multithread transmission method of realizing flexible QoS in a kind of heterogeneous network, may further comprise the steps:
S1, service request step: when portable terminal or service distributing and fusion center need to send data, service requesting information is sent to the network control center, solicited message comprises the qos parameter that this business is required;
S2, master network distribute the available resources step: the network control center is at first to master network application available resources, and master network feeds back to the network control center with the own QoS that can support;
S3, auxiliary network select step: the network control center by master network to the auxiliary network list of mobile terminal request, portable terminal sends auxiliary network list by master network to the network control center, the QoS that the network control center is required according to professional remainder, and the parameter of each auxiliary network in the auxiliary network list, carry out the selection of optimum auxiliary network based on the simple weighted method in the multiattribute mode decision scheme;
S4, auxiliary network allocation available resources step: after finishing auxiliary network selection, the network control center sends service request to the auxiliary network of optimum, and auxiliary network is replied, if this auxiliary network can satisfy transmission requirement, then carries out next step; If can not satisfy, the auxiliary network of then selecting suboptimum in the auxiliary network that satisfies condition is initiating business request again, after auxiliary network and portable terminal connect, sends the affirmation instruction to the network control center;
S5, multithread transmitting step: the network control center sets up instruction to portable terminal and service distributing and fusion center initiation business respectively, the beginning of indication multithread transmission.
As shown in Figure 3, if be that portable terminal need to send data among the described service request step S1, then the network control center sets up instruction to portable terminal initiation business among the described multithread transmitting step S5, portable terminal is by master network and auxiliary network difference the transmission of data, and service distributing and fusion center merge these data.The professional start flow of portable terminal caller comprises following step:
1) when portable terminal needs initiating business request, the identity information of oneself, professional qos parameter, purpose user's the information such as address are sent to the nucleus equipment of master network.
2) master network and portable terminal connect, and carry out authentication, then service requesting information are sent to the network control center;
3) network control center is at first to master network application available resources.If data service does not then require the data transfer rate of master network transmission; If video traffic then requires master network that the data transfer rate of basic layer video transmission can be provided at least.
4) master network feeds back to the network control center with the own QoS that can support.
5) network control center by master network to the auxiliary network list of mobile terminal request.
6) portable terminal sends auxiliary network list by master network to the network control center.
7) QoS required according to professional remainder of the network control center selects one of them or individual auxiliary network to carry out service request.
8) auxiliary network is replied, if this auxiliary network can satisfy transmission requirement, then carries out next step; If can not satisfy or refuse, then in auxiliary network list, select again initiating business request of next auxiliary network.
9) after auxiliary network connects, send the affirmation instruction to the network control center.
10) network control center sets up instruction to portable terminal and service distributing and fusion center initiation business respectively, the beginning of indication multithread transmission.
11) portable terminal is by master network and auxiliary network difference the transmission of data, and service distributing and fusion center merge these data.
As shown in Figure 4, if be that service distributing and fusion center need to send data among the described service request step S1, then the network control center sets up instruction to service distributing and fusion center initiation business among the described multithread transmitting step S5, service distributing and fusion center send data transfer command, part data communication device is crossed the master network transmission, and a part of data communication device is crossed auxiliary Internet Transmission.Start flow comprises following step:
When 1) service distributing and fusion center have downlink service data to arrive, at first send this service request to the network control center, request content comprises the qos parameter that this business is required.
2) network control center initiates paging request to master network, and to master network application available resources.
3) master network is admitted this business, and to the own QoS that can support of network control center's feedback.If data service does not then require the data transfer rate of master network transmission; If video traffic then requires master network that the data transfer rate of basic layer video transmission can be provided at least.
4) network control center by master network to the auxiliary network list of mobile terminal request.
5) portable terminal sends auxiliary network list by master network to the network control center, and auxiliary network list comprises the parameters such as the signal strength signal intensity, time delay, the error rate of each auxiliary network that current mobile terminal can utilize.
6) network control center selects one or more auxiliary network to initiate auxiliary Network request according to remaining qos requirement.
7) auxiliary network is replied, if this auxiliary network can satisfy transmission requirement, then carries out next step; If can not satisfy or refuse, then in auxiliary network list, select again initiating business request of next auxiliary network.
8) auxiliary network is set up and being connected of portable terminal, and the auxiliary network foundation of informing network control centre is finished.
9) network control center is to service distributing and fusion center and portable terminal transmission traffic assignments signaling, and service distributing and fusion center and portable terminal return the signaling that main and auxiliary Network has assigned.
10) network control center sends data transfer command to service distributing and fusion center, formally begins the multithread transmission this moment, and a part of data communication device is crossed the master network transmission, and a part of data communication device is crossed auxiliary Internet Transmission.
As shown in Figure 5, handoff procedure specifically may further comprise the steps between auxiliary net:
1) is lower than certain thresholding if portable terminal monitors auxiliary network signal intensity, then will starts reporting of auxiliary network list, comprise each auxiliary network signal intensity in the current wireless environment in the tabulation;
2) network control center carries out switch decision, if presently used auxiliary network can't provide service, then switches to other auxiliary networks, sends handover request to other auxiliary networks;
3) the target secondary network is admitted handover request, carries out resource distribution, and returns handover request and reply;
4) network control center to the source auxiliary network and the shunting fusion center assign switching command.If data service, then the auxiliary network in source is received the transmission that stops the auxiliary business in source behind the switching command, and returns the sequence number of non-delivery successful packet to the network control center.After the shunting fusion center is received sequence of data packet number, will corresponding auxiliary network data hang-up; If video traffic, then non-delivery successful packet can be hung up also and can not hang up re-transmission;
5) after portable terminal is received switching command, return switching to the target secondary network and confirm, switch this moment and finish;
6) auxiliary business rebulids connection;
7) re-start the multithread transmission, the main business data are transmitted by master network, and auxiliary business datum comprises that the packet of hang-up is by the target secondary Internet Transmission.
As shown in Figure 6, if the resource of master network is nervous, need to forward part or all of business to auxiliary Internet Transmission, switching flow is as follows:
1) master network is initiated handover request to the network control center, and the switching of this moment is initiated by master network, rather than signal intensity causes because portable terminal monitors;
When 2) network control center was to the auxiliary network list of mobile terminal request or master network initiation handover request, to the mobile terminal request auxiliary network list of this moment, the auxiliary network list that portable terminal will real-time monitor reported the network control center; (dotted line represents option among the figure)
3) network control center carries out switch decision, if this moment auxiliary network conforms qos requirement, then initiate reconfiguration request to auxiliary network, ask auxiliary network allocation to the more resource of portable terminal;
4) auxiliary network is finished the resource distribution, returning reconfiguration request replys, the network control center initiates reconfigure command to master network, and master network is initiated reconfigure command to portable terminal, and indication master network and portable terminal carry out the sending and receiving of data flow according to the scheme of reshuffling.
5) auxiliary network sends reconfigure command to the shunting fusion center, and the indication shunt centre is shunted by the scheme after reshuffling and merged.
6) reshuffle and finish, re-start the multithread transmission.
As shown in Figure 7, because the mobility of terminal causes auxiliary network unavailable, perhaps because the change of access strategy causes auxiliary network disabled, then original data service in auxiliary transmission over networks need to forward the master network transmission to, and this switching flow may further comprise the steps:
1) be lower than certain thresholding when auxiliary network signal, portable terminal triggers reporting of auxiliary network list, reports the parameter of current each auxiliary network;
2) network control center carries out switch decision, finds currently can use without auxiliary network;
3) this moment, the network control center initiated the Connection Release order to auxiliary network, and auxiliary network is initiated the Connection Release order to portable terminal; After Connection Release was finished, auxiliary network was handed to shunting and fusion center to the packet sequence number of not success payment through the network control center;
4) network control center initiates reconfiguration request, and can the inquiry master network bear auxiliary business, if master network can be born all or part of auxiliary business, returns reconfiguration request and reply, if can not admit this request, then refuses this request;
5) middle master network is replied to the situation of bearing of auxiliary business according to reconfiguration request by the network control center, initiates reconfigure command to the shunting fusion center, and indication shunting fusion center is heavily shunted; The network control center also initiates reconfigure command, the indication of heavily shunting to master network and portable terminal simultaneously;
6) after the network control center receives to reshuffle the message of finishing, at first transmit the not successful packet of paying in the auxiliary business, to realize the transmitting of auxiliary business, then just carry out the transmission of new data flow.
Although more than described the specific embodiment of the present invention, but those skilled in the art is to be understood that, these embodiments only illustrate, those skilled in the art can carry out various omissions, replacement and change to the details of said method and system in the situation that does not break away from principle of the present invention and essence.For example, merge the said method step, then belong to scope of the present invention thereby carry out the identical function of essence according to the identical method of essence to realize the identical result of essence.Therefore, scope of the present invention is only limited by appended claims.
Claims (8)
1. realize the multithread transmission system of flexible QoS in the heterogeneous network, it is characterized in that, comprise with lower module:
The network control center: be responsible for carrying out the selection of Signalling exchange and auxiliary network with master network, auxiliary network and service distributing and fusion center;
Service distributing and fusion center: be responsible for shunting and the fusion of master network, auxiliary Network;
Master network: comprise master network core net, master network base station, portable terminal is connected with the master network core net by the master network base station;
Auxiliary network: comprise auxiliary network core net, auxiliary network base station, portable terminal by auxiliary network base station be connected the network core net and connect;
Portable terminal: support the multithread transmission.
2. realize according to claim 1 the multithread transmission system of flexible QoS in the described heterogeneous network, it is characterized in that described portable terminal further comprises:
Service distributing and Fusion Module: according to the decision-making of network side, be responsible for Business Stream in master network and auxiliary internetwork shunting and fusion;
Auxiliary network state monitoring modular: the auxiliary network coverage situation of monitoring portable terminal present position, the information of monitoring comprises auxiliary network of network type, signal strength signal intensity, time delay, shake and residential quarter ID, the data that monitor are recorded in auxiliary network list, and this auxiliary network list is sent to the network control center by master network;
Radio frequency transmission module: comprise at least two cover transceivers, transmit in order to multithread.
3. realize the multithread transmission method of flexible QoS in the heterogeneous network, it is characterized in that, may further comprise the steps:
The service request step: when portable terminal or service distributing and fusion center need to send data, service requesting information is sent to the network control center, solicited message comprises the qos parameter that this business is required;
Master network distributes the available resources step: the network control center is at first to master network application available resources, and master network feeds back to the network control center with the own QoS that can support;
Auxiliary network is selected step: the network control center by master network to the auxiliary network list of mobile terminal request, portable terminal sends auxiliary network list by master network to the network control center, the QoS that the network control center is required according to professional remainder, and the parameter of each auxiliary network in the auxiliary network list, carry out the selection of optimum auxiliary network based on the simple weighted method in the multiattribute mode decision scheme; Auxiliary network allocation available resources step: after finishing auxiliary network selection, the network control center sends service request to the auxiliary network of optimum, and auxiliary network is replied, if this auxiliary network can satisfy transmission requirement, then carries out next step; If can not satisfy, the auxiliary network of then selecting suboptimum in the auxiliary network that satisfies condition is initiating business request again, after auxiliary network and portable terminal connect, sends the affirmation instruction to the network control center;
The multithread transmitting step: the network control center sets up instruction to portable terminal and service distributing and fusion center initiation business respectively, the beginning of indication multithread transmission.
4. realize according to claim 3 the multithread transmission method of flexible QoS in the described heterogeneous network, it is characterized in that, if be that portable terminal need to send data in the described service request step, then the network control center sets up instruction to portable terminal initiation business in the described multithread transmitting step, portable terminal is by master network and auxiliary network difference the transmission of data, and service distributing and fusion center merge these data.
5. realize according to claim 3 the multithread transmission method of flexible QoS in the described heterogeneous network, it is characterized in that, if be that service distributing and fusion center need to send data in the described service request step, then the network control center sets up instruction to service distributing and fusion center initiation business in the described multithread transmitting step, service distributing and fusion center send data transfer command, part data communication device is crossed the master network transmission, and a part of data communication device is crossed auxiliary Internet Transmission.
6. realize according to claim 3 the multithread transmission method of flexible QoS in the described heterogeneous network, it is characterized in that, after described multithread transmitting step, also comprise switch step between auxiliary network, specifically may further comprise the steps:
Be lower than certain thresholding if portable terminal monitors auxiliary network signal intensity, then start reporting of auxiliary network list, comprise each auxiliary network signal intensity and QoS information in the current wireless environment in the auxiliary network list;
The network control center carries out switch decision, if presently used auxiliary network can't provide service, then switches to other auxiliary networks, sends handover request to other auxiliary networks;
Auxiliary network is admitted handover request, carries out resource distribution, and returns handover request and reply;
Switching command is assigned to auxiliary network and service distributing and fusion center by the network control center;
After portable terminal is received switching command, return switching to auxiliary network and confirm.
7. realize according to claim 3 the multithread transmission method of flexible QoS in the described heterogeneous network, it is characterized in that, after described multithread transmitting step, comprise that also master network to auxiliary network switch step, specifically may further comprise the steps:
Master network is initiated handover request to the network control center;
When the network control center initiated handover request to the auxiliary network list of mobile terminal request or master network, to the mobile terminal request auxiliary network list of this moment, the auxiliary network list that portable terminal will real-time monitor reported the network control center;
The network control center carries out switch decision, if this moment auxiliary network conforms qos requirement, then initiate reconfiguration request to auxiliary network, ask auxiliary network allocation to the more resource of portable terminal;
Auxiliary network is finished resource and is distributed, returning reconfiguration request replys, the network control center initiates reconfigure command to master network, and master network is initiated reconfigure command to portable terminal, and indication master network and portable terminal carry out the sending and receiving of data flow according to the scheme of reshuffling;
Auxiliary network sends reconfigure command to service distributing and fusion center, indicates it to shunt by the scheme after reshuffling and merge.
8. realize according to claim 3 the multithread transmission method of flexible QoS in the described heterogeneous network, it is characterized in that, after described multithread transmitting step, comprise that also auxiliary network to the master network switch step, specifically may further comprise the steps:
When auxiliary network signal is lower than certain thresholding, portable terminal triggers reporting of auxiliary network list, reports the parameter of current each auxiliary network;
The network control center carries out switch decision, finds currently can use without auxiliary network;
This moment, the network control center initiated the Connection Release order to auxiliary network, and auxiliary network is initiated the Connection Release order to portable terminal; After Connection Release was finished, auxiliary network was handed to shunting and fusion center to the packet sequence number of not success payment through the network control center;
The network control center initiates reconfiguration request, and can the inquiry master network bear auxiliary business, if master network can be born all or part of auxiliary business, returns reconfiguration request and reply, if can not admit this request, then refuses this request;
Middle master network is replied to the situation of bearing of auxiliary business according to reconfiguration request by the network control center, initiates reconfigure command to shunting and fusion center, and the indication shunting is heavily shunted with fusion center; The network control center also initiates reconfigure command, the indication of heavily shunting to master network and portable terminal simultaneously.
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