CN102448136A - Method and device for switching service of multimode terminal - Google Patents
Method and device for switching service of multimode terminal Download PDFInfo
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- CN102448136A CN102448136A CN2012100060130A CN201210006013A CN102448136A CN 102448136 A CN102448136 A CN 102448136A CN 2012100060130 A CN2012100060130 A CN 2012100060130A CN 201210006013 A CN201210006013 A CN 201210006013A CN 102448136 A CN102448136 A CN 102448136A
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Abstract
The invention discloses a method and device for switching service of a multimode terminal. The method comprises the following steps: a PDP (Packet Data Protocol) management layer detects signal qualities of different networks in a current network environment when a PS (Packet Switched) service data requested by a user is transmitted between the multimode terminal and a network side through an activated first PDP link, wherein the PDP management layer is located between a frame layer and a wireless access layer of the multimode terminal; the PDP management layer compares the detected signal qualities of different networks, and requests to activate a second PDP link corresponding to the network with the optimal signal quality; and after the second PDP link is successfully activated, the PDP management layer switches a transmission link between the PDP management layer and the network side to the second PDP link. According to the method provided by the invention, the multimode terminal can be seamlessly switched to a network with the optimal present signal quality in a network convergence environment, and transmission rate of the PS service data is increased.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of multi-mode terminal service changing method and device.
Background technology
The following China of expert assessment and evaluation will form 2G, 3G and 4G in the long duration and deposit the situation of complementary development, rather than simple upgrading is replaced.To Long Term Evolution (Long-Term Evolution; Abbreviate LTE as) (the transition between 3G and the 4G technology; Its improves and has strengthened the air interface technologies of 3G), when 4G etc. carries out technical research, domestic operator is making the best use of time to carry out the covering and the optimization of disparate networks.
In addition, along with the continuous covering of 3G network, the continuous development of smart mobile phone, wireless data traffic exerts heavy pressures on for the mobile ecosystem in sharp increase.The estimation of IHS Screen Digest shows, the data that 2,300,000 TB were arranged in 2010 approximately are through wireless network transmissions, and the annual growth rate of the mobile data flow coming years all will be higher than 80%, will reach 3,000 ten thousand TB by 2014.So huge flow impels cellular carrier to release 4G infrastructure, to improve connection speed and improvement capacity.So far, build up 17 networks that belong to 4G LTE standard, also had 117 tame operators promises to release this 4G network in the coming years.
Therefore, under the network condition that many nets merge, how to adapt to the complex network pattern that many nets merge,, become a major issue for the user provides high-speed packet exchange (Packet Switched abbreviates PS as) business.In the correlation technique, the simple handoff technique of TD and Wireless Fidelity (Wireless Fidelity abbreviates WIFI as) is only arranged, the technical scheme that does not still have many nets to merge.Simultaneously; The simple switching of TD and WIFI is divided into active detecting and two kinds of mechanism of passive switching; These two kinds of mechanism are from structure and theory; Packet data protocol (Packet Data Protocol abbreviates PDP as) link opens circuit in all occurring easily switching, thereby influences the professional user experience of user PS.How to net under the network environment that merges morely, realize the seamless switching of heterogeneous networks, and reach the fastest problem of single channel PDP link transmission, do not propose effective solution at present as yet.
Summary of the invention
Seamless switching to realizing heterogeneous networks under the network environment that merges at many nets reaches the fastest problem of single channel PDP link transmission, the invention provides a kind of multi-mode terminal service changing method and device, to address the above problem at least.
According to an aspect of the present invention; A kind of multi-mode terminal service changing method is provided; Comprise: in the process of the packet switching PS business datum that packet data protocol PDP management level are asked through a PDP link transmission user who has activated between multimode terminal and network side; Detect the signal quality of the heterogeneous networks in the current network environment, wherein, the PDP management level are between the ccf layer and radio access layer of multimode terminal; The signal quality of the more detected heterogeneous networks of PDP management level, the 2nd corresponding PDP link of network that the requesting activation signal quality is optimum; After the success of the 2nd PDP link activation, the PDP management level switch to the 2nd PDP link with the transmission link between PDP management level and the network side.
Preferably; Before the packet data exchanged PS business datum of asking through a PDP link transmission user who has activated between multimode terminal and the network side; Also comprise: in the start process of multimode terminal or during response PS service request, the corresponding PDP link of the preset network of requesting activation; Response user's request is through the PS business datum of PDP link transmission user request.
Preferably; The PDP management level switch to the transmission link between PDP management level and the network side after the 2nd PDP link; Said method also comprises: the upstream data that will send to network side through a PDP link is handled via VPN and is redispatched to the 2nd PDP link, and through the 2nd PDP link with transmitting uplink data to network side; Through the 2nd PDP link the downlink data that network side sends is redispatched to a PDP link via the VPN processing, and passed through a PDP link the upper layer application of downlink data transmission to the multimode terminal.
Preferably, above-mentioned signal quality comprises: the signal strength signal intensity of network, and/or, the signal stabilization degree of network.
Preferably, the signal quality of the more detected heterogeneous networks of PDP management level comprises: the signal strength signal intensity of more detected heterogeneous networks, and/or, the signal stabilization degree of more detected heterogeneous networks.
Preferably, the 2nd corresponding PDP link of network that PDP management level requesting activation signal quality is optimum comprises: best the 2nd corresponding PDP link of network of signal strength signal intensity and/or signal stabilization degree in the detected heterogeneous networks of requesting activation.
Preferably; The said signal quality of the more detected heterogeneous networks of PDP management level; The 2nd corresponding PDP link of network that the requesting activation signal quality is optimum comprises: the professional corresponding relation with network of PDP management level according to the PS that is provided with in advance, judge current detection to network in whether have the corresponding network of PS business with current executed; If, the 2nd corresponding PDP link of this network of requesting activation then.
According to another aspect of the present invention; A kind of multi-mode terminal service switching device shifter is provided; Between the ccf layer and radio access layer of multimode terminal; Comprise: detection module, be used between multimode terminal and network side process through the packet data exchanged PS business datum of the PDP link transmission user request that activated, detect the signal quality of the heterogeneous networks in the current network environment; Evaluation module is used for the signal quality of the detected heterogeneous networks of comparison detection module, the 2nd corresponding PDP link of network that the requesting activation signal quality is optimum; Handover module is used for after the success of the 2nd PDP link activation, the transmission link between PDP management level and the network side being switched to the 2nd PDP link.
Preferably, said apparatus also comprises: first transport module, the upstream data that is used for will sending to network side through a PDP link is handled via VPN and is redispatched to the 2nd PDP link, and through the 2nd PDP link with transmitting uplink data to network side; Second transport module is used for through the 2nd PDP link the downlink data that network side sends being redispatched to a PDP link via the VPN processing, and passes through a PDP link with the upper layer application of transmitting uplink data to the multimode terminal.
Preferably, the signal quality that detection module detected comprises: the signal strength signal intensity of network, and/or, the signal stabilization degree of network.
Preferably, above-mentioned evaluation module comprises: first comparing unit is used for the signal strength signal intensity of the detected heterogeneous networks of comparison detection module; And/or second comparing unit is used for the signal stabilization degree of the detected heterogeneous networks of comparison detection module.
Through the present invention; The PDP management level are carried out in the process in the PS business, detect and assess the signal quality of heterogeneous networks in the multimode terminal network environment of living in, the corresponding PDP link of network that the requesting activation signal quality is optimum; Transmission link between PDP management level and the network side is switched to the PDP link of activation; And PDP management level and upper layer application keep switching PDP link before, have realized the seamless switching under many nets fusions, have improved the stability of PDP link in the network switching process.And carry out the PS business through the best network of signal quality according to the assessment result of signal quality, and make that single channel PDP link transmission is fastest, improved the professional user experience of PS.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structured flowchart according to the multi-mode terminal service switching device shifter of the embodiment of the invention;
Fig. 2 is the structured flowchart according to a kind of preferred multi-mode terminal service switching device shifter of the embodiment of the invention;
Fig. 3 is the structured flowchart according to the preferred evaluation module of the embodiment of the invention;
Fig. 4 is the flow chart according to the multi-mode terminal service changing method of the embodiment of the invention;
Fig. 5 is the structured flowchart according to the multimode terminal of the embodiment of the invention;
Fig. 6 is the structured flowchart according to the PDP management level of the embodiment of the invention;
Fig. 7 is the sketch map according to the multi-mode terminal service handoff procedure of the embodiment of the invention.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
In correlation technique; How to net under the network environment that merges more; Realize PS business seamless switching and make the fastest problem of single channel PDP link transmission between heterogeneous networks, the embodiment of the invention provides a kind of multi-mode terminal service changing method and device.With Android intelligence multimode terminal is example; In the ccf layer of multimode terminal and radio access layer, add the PDP management level; PDP link to heterogeneous networks is managed; Make under the network environment that many nets merge, also can guarantee single channel PS data link speed and the optimum purpose of stability, thereby improve the professional user experience of PS.
Embodiment one
According to the embodiment of the invention; A kind of multi-mode terminal service switching device shifter is provided, between the ccf layer and radio access layer of multimode terminal, has been used to detect and assess the signal quality of heterogeneous networks; The corresponding PDP link of the top-quality network of activation signal; Transmission link between PDP management level and the network side is switched to the PDP link of activation, realize the seamless switchings of many nets under merging, and make that single channel PDP link transmission is fastest.
Fig. 1 is the structured flowchart according to the multi-mode terminal service switching device shifter of the embodiment of the invention, and is as shown in Figure 1, and this device can comprise: detection module 10, evaluation module 20 and handover module 30.Wherein, detection module 10 is used between multimode terminal and network side the process through packet data exchanged (PS) business datum of the PDP link transmission user request that activated, detects the signal quality of the heterogeneous networks in the current network environment.Evaluation module 20; Be coupled with detection module 10; The said signal quality that is used for comparison detection module 10 detected heterogeneous networks; Corresponding the 2nd PDP link (be the corresponding PDP link of the optimum network of signal quality, in embodiments of the present invention, describe for ease and be referred to as the 2nd PDP link) of network that the requesting activation signal quality is optimum.Handover module 30 is coupled with evaluation module 20, is used for after the success of the 2nd PDP link activation, the transmission link between PDP management level and the network side being switched to the 2nd PDP link.
Pass through the embodiment of the invention; Carry out in the process in the PS business, detect and assess the signal quality of heterogeneous networks, and the corresponding PDP link of the top-quality network of activation signal; Transmission link between PDP management level and the network side is switched to the PDP link of activation; And PDP management level and upper layer application keep switching PDP link before, have realized the seamless switching under many nets fusions, have improved the stability of PDP link in the network switching process.And carry out the PS business through the best network of signal quality according to the assessment result of signal quality, make that single channel PDP link transmission is fastest.
In a preferred implementation of the embodiment of the invention, in the time of can or responding the PS service request in the start process of multimode terminal, the corresponding PDP link of the preset network of requesting activation.After the one PDP link activation success, multimode terminal response user's request is through the PS business datum of the PDP link transmission user request that activates.For example; The default network that multimode terminal can be set is the LTE network; In start process or during response PS service request, multimode terminal activates the PDP link (i.e. a PDP link) of LTE network, carries out the PS business of user's request through the PDP link of LTE network so.Through this preferred implementation, multimode terminal can be set carry out the professional default network of PD, strengthened the flexibility that the user selects the PS business network.
Handover module 30 switches to the transmission link between PDP management level and the network side after the 2nd PDP link; The PDP management level can be managed the PS business data transmission of a PDP link and the 2nd PDP link; The PS business datum that the upper layer application of multimode terminal is sent is passed through a PDP link transmission to the PDP management level, and the PDP management level are passed through the 2nd PDP link transmission to network side with above-mentioned PS business datum; Simultaneously, the PS business datum that network side sends is passed through the 2nd PDP link transmission to the PDP management level, the PS business datum that the PDP management level are sent network side is sent to the upper layer application of multimode terminal through a PDP link.
To achieve these goals; In a preferred implementation of the embodiment of the invention; As shown in Figure 2; Said apparatus can also comprise: first transport module 40, the upstream data that is used for will sending to network side through a PDP link is handled via VPN and is redispatched to the 2nd PDP link, and through the 2nd PDP link with above-mentioned transmitting uplink data to network side.Second transport module 50 is used for through the 2nd PDP link the downlink data that network side sends being redispatched to a PDP link via the VPN processing, and passes through a PDP link with the upper layer application of above-mentioned transmitting uplink data to the multimode terminal.Through this preferred embodiment; The upper layer application maintenance is connected with a PDP link that has activated; The PDP management level are accomplished the switching of the 2nd PDP link, carry out transfer of data through the 2nd PDP link and network side, have realized the seamless switching of heterogeneous networks in many nets fusions; Carry out the PS business for multimode terminal provides optimum network, improved the professional user experience of PS.
In a preferred implementation of the embodiment of the invention; In order to assess the signal quality of heterogeneous networks, detection module 10 can detect the signal strength signal intensity of heterogeneous networks, and multimode terminal can carry out the PS business through the optimum network of signal strength signal intensity; At this moment; Evaluation module 20 can compare the signal strength signal intensity of detection module 10 detected heterogeneous networks, the 2nd corresponding PDP link of network that the requesting activation signal strength signal intensity is optimum.Handover module 30 switches to optimum the 2nd corresponding PDP link of network of signal strength signal intensity with PDP management level and transmission link between the network side.Through this preferred embodiment,, realized that choosing the optimum network of signal strength signal intensity for multimode terminal carries out the PS business, has improved PS traffic transmission speed with the parameter that the signal strength signal intensity of network is assessed as network signal quality.
In addition; Detection module 10 also can detect the signal stabilization degree of heterogeneous networks; Multimode terminal can carry out the PS business through the optimum network of signal stabilization degree, at this moment, and evaluation module 20; The signal stabilization degree that can compare detection module 10 detected heterogeneous networks, the 2nd corresponding PDP link of network that requesting activation signal stabilization degree is optimum.Handover module 30 switches to optimum the 2nd corresponding PDP link of network of signal stabilization degree with PDP management level and transmission link between the network side.Whether for example, evaluation module 20 can pass through positioning function, judge that UE is current to be in the high-speed mobile, if then the signal stabilization degree of UE is relatively poor.Through this preferred embodiment,, realized that choosing the optimum network of signal stabilization degree for multimode terminal carries out the PS business, has improved PS traffic transmission speed with the parameter that the signal stabilization degree of network is assessed as network signal quality.
Further; Detection module 10 can also detect the signal strength signal intensity and the signal stabilization degree of heterogeneous networks simultaneously; Multimode terminal can carry out the PS business through signal strength signal intensity and the optimum network of signal stabilization degree, and is at this moment, as shown in Figure 3; Evaluation module 20 can comprise: first comparing unit 202 is used for the said signal strength signal intensity of comparison detection module 10 detected heterogeneous networks; Second comparing unit 204 is used for the signal stabilization degree of comparison detection module 10 detected heterogeneous networks.Evaluation module 20 can be according to comparative result, the 2nd corresponding PDP link of network that requesting activation signal strength signal intensity and signal stabilization degree are optimum.Preferably, can be according to the weight of actual conditions signalization intensity and signal stabilization degree, make the assessment result size of reference signal strength and signal stabilization degree simultaneously.After the signal quality assessment is accomplished; Trigger handover module 30; PDP management level and transmission link between the network side are switched to signal strength signal intensity and optimum the 2nd corresponding PDP link of network of signal stabilization degree, and multimode terminal carries out the PS business through the 2nd PDP link and network side.Through this preferred embodiment, the parameter of assessing as network signal quality with the signal strength signal intensity and the signal stabilization degree of network has simultaneously realized that choosing the optimum network of signal stabilization degree for multimode terminal carries out the PS business, has further improved PS traffic transmission speed.
The said apparatus that provides corresponding to the embodiment of the invention; The embodiment of the invention also provides a kind of multi-mode terminal service changing method, can carry out in the process in the PS business, detects and assess the signal quality of heterogeneous networks; The corresponding PDP link of the top-quality network of activation signal; Transmission link between PDP management level and the network side is switched to the PDP link of activation, realize the seamless switchings of many nets under merging, and make that single channel PDP link transmission is fastest.
Fig. 4 is the flow chart according to the multi-mode terminal service changing method of the embodiment of the invention, and is as shown in Figure 4, and this method can comprise following step (step S402-step S406):
Step S402; In the process of the PS business datum that the PDP management level are asked through a PDP link transmission user who has activated between multimode terminal and network side; Detect the signal quality of the heterogeneous networks in the current network environment; Wherein, the PDP management level are between the ccf layer and radio access layer of multimode terminal.
Step S404, the said signal quality of the more detected heterogeneous networks of PDP management level, the 2nd corresponding PDP link of network that the requesting activation signal quality is optimum.
Step S406, after the success of the 2nd PDP link activation, the PDP management level switch to said the 2nd PDP link with the transmission link between PDP management level and the network side.
Pass through the embodiment of the invention; The PDP management level are carried out in the process in the PS business; Detect and assess the signal quality of heterogeneous networks in the multimode terminal network environment of living in, the corresponding PDP link (that is the 2nd PDP link) of network that the requesting activation signal quality is optimum; Transmission link between PDP management level and the network side is switched to the PDP link of activation; And PDP management level and upper layer application keep switching PDP link before, have realized the seamless switching under many nets fusions, have improved the stability of PDP link in the network switching process.And carry out the PS business through the best network of signal quality according to the assessment result of signal quality, and make that single channel PDP link transmission is fastest, improved the professional user experience of PS.
When multimode terminal can or respond the PS service request in start process, the corresponding PDP link of the preset network of requesting activation.After the one PDP link activation success, multimode terminal response user's request is through the PS business datum of the PDP link transmission user request that activates.Therefore; In a preferred implementation of the embodiment of the invention; Before the packet data exchanged PS business datum of the PDP link transmission user request through having activated between multimode terminal and the network side, multimode terminal is in start process or during response PS service request, can the corresponding PDP link of the preset network of requesting activation; The one PDP link activation success back response user's request is through the PS business datum of PDP link transmission user request.For example; The default network that multimode terminal can be set is the LTE network; In start process or during response PS service request, multimode terminal activates the PDP link (i.e. a PDP link) of LTE network, carries out the PS business of user's request through the PDP link of LTE network so.
In a preferred implementation of the embodiment of the invention; In order to assess the signal quality of heterogeneous networks; The PDP management level can detect the signal strength signal intensity of heterogeneous networks; Multimode terminal can carry out the PS business through the optimum network of signal strength signal intensity, the signal strength signal intensity that this moment can more detected heterogeneous networks, the 2nd corresponding PDP link of network that the requesting activation signal strength signal intensity is optimum.After the success of the 2nd PDP link activation, the PDP management level switch to PDP management level and the transmission link between the network side the 2nd corresponding PDP link of network of signal strength signal intensity optimum.Through this preferred embodiment,, realized that choosing the optimum network of signal strength signal intensity for multimode terminal carries out the PS business, has improved PS traffic transmission speed with the parameter that the signal strength signal intensity of network is assessed as network signal quality.
In addition; The PDP management level also can detect the signal stabilization degree of heterogeneous networks; Multimode terminal can carry out the PS business through the optimum network of signal stabilization degree; This moment can more detected heterogeneous networks the signal stabilization degree, the 2nd corresponding PDP link of network that requesting activation signal stabilization degree is optimum.After the success of the 2nd PDP link activation, the PDP management level switch to PDP management level and the transmission link between the network side the 2nd corresponding PDP link of network of signal stabilization degree optimum.Whether for example, evaluation module 20 can pass through positioning function, judge that UE is current to be in the high-speed mobile, if then the signal stabilization degree of UE is relatively poor, if not, then the signal stabilization degree of UE is good.Through this preferred embodiment,, realized that choosing the optimum network of signal stabilization degree for multimode terminal carries out the PS business, has improved PS traffic transmission speed with the parameter that the signal stabilization degree of network is assessed as network signal quality.
Further; The PDP management level can also detect the signal strength signal intensity and the signal stabilization degree of heterogeneous networks simultaneously; Multimode terminal can carry out the PS business through signal strength signal intensity and the optimum network of signal stabilization degree; At this moment, the said signal strength signal intensity of more detected heterogeneous networks and signal stabilization degree, and requesting activation signal strength signal intensity and optimum the 2nd corresponding PDP link of network of signal stabilization degree simultaneously.Preferably, can be according to the weight of actual conditions signalization intensity and signal stabilization degree, make the assessment result size of reference signal strength and signal stabilization degree simultaneously.After the signal quality assessment completion, the PDP management level switch to signal strength signal intensity and optimum the 2nd corresponding PDP link of network of signal stabilization degree with PDP management level and the transmission link between the network side, and multimode terminal carries out the PS business through the 2nd PDP link and network side.Through this preferred embodiment, the parameter of assessing as network signal quality with the signal strength signal intensity and the signal stabilization degree of network has simultaneously realized that choosing the optimum network of signal stabilization degree for multimode terminal carries out the PS business, has further improved PS traffic transmission speed.
In a preferred implementation of the embodiment of the invention; The said signal quality of the more detected heterogeneous networks of PDP management level; The 2nd corresponding PDP link of network that the requesting activation signal quality is optimum can comprise: the professional corresponding relation with network of PDP management level according to the PS that is provided with in advance, judge current detection to network in whether have the corresponding network of PS business with current executed; If, the 2nd corresponding PDP link of this network of requesting activation then.For example, professional for the PS of carrier state information, when detecting the professional corresponding network of the PS of the type, activate the PDP link of map network, with the link switchover between PDP management level and the network side to the PDP link that activates.Through this preferred embodiment, can choose optimum network for the PS business of carrier state information and carry out transfer of data, improved the professional user experience of PS.
The PDP management level switch to the transmission link between PDP management level and the network side after the 2nd PDP link; The PDP management level can be managed the PS business data transmission of a PDP link and the 2nd PDP link; The PS business datum that the upper layer application of multimode terminal is sent is passed through a PDP link transmission to the PDP management level, and the PDP management level are passed through the 2nd PDP link transmission to network side with above-mentioned PS business datum; Simultaneously, the PS business datum that network side sends is passed through the 2nd PDP link transmission to the PDP management level, the PS business datum that the PDP management level are sent network side is sent to the upper layer application of multimode terminal through a PDP link.
Therefore; In a preferred implementation of the embodiment of the invention; The PDP management level switch to the transmission link between PDP management level and the network side after the 2nd PDP link; Can handle via VPN through the upstream data that a PDP link will send to network side and redispatch to the 2nd PDP link, and through the 2nd PDP link with transmitting uplink data to network side; Simultaneously, can handle via VPN through the downlink data that the 2nd PDP link sends network side and redispatch, and pass through a PDP link the upper layer application of above-mentioned downlink data transmission to the multimode terminal to a PDP link.Preferably, can make up VPN, will upload data to AP based on VPN through the data that the 2nd PDP link is uploaded in the PDP management level.
Embodiment two
According to the embodiment of the invention; With smart mobile phone Android platform is example; According to the framework of Android platform, the PS business datum is (Framework) from application layer AP to ccf layer, from ccf layer again to radio access layer (Radio interface Layer; Abbreviate RIL as), send to the mechanism of CP at last.In ccf layer and radio access layer, add the PDP management level, manage, reach at EDGE/TD/WIFI/LTE and net under the condition of fusion more, also can guarantee single channel PS data link speed and the optimum state of stability for the PDP link.
In order to adapt to the complex network pattern that many nets merge; And reach the fastest purpose of single channel PDP link speed of download; In multimode terminal as shown in Figure 5, application subsystem (AP) makes up PDP management level between RIL and Framework, and the start acquiescence activates one road PDP.The PDP management level receive the network carrying and switch between need netting; When obtaining optimum PS download state; Issue through the PDP management level when keeping current PDP link and ask, on the current optimal network, activate another road PDP link, transfer of data is switched to this PS link after activating successfully to RIL; With the information reporting PDP management level such as IP gateway of up-to-date activation PS link, but do not report AP.Make up VPN in the PDP management level, the data that up-to-date PS link is uploaded are uploaded data to AP based on VPN.Thereby, can guarantee that single channel PS speed of download is the fastest, realize the seamless switching of PS business between heterogeneous networks, and breaking phenomena can not occur.
Framework module in the Android platform is mainly used in to receive and handles the request message that application program issues, and judges that whether request message is the PS service request, handles the PS data interaction of going forward side by side if request message is sent to the PDP management level; Otherwise, request message directly is sent to RIL handles.
The PDP management level mainly are to handle the acquiescence PDP activating request message that Framework issues in the start process, send the PDP activating request message according to TD, WIFI, the management of LTE network environment simultaneously.Make up a VPN in the PDP management level, be used for data transfer management, can be divided into following two kinds of situation:
1) it is professional to have a PS of state information.The PDP management level receive such PDP and activate request, and the PDP link that different service is corresponding different will be chosen in the optimal network current all available networks and carry out, the PDP link of Framework layer and the corresponding one by one transfer of data of carrying out of the PDP link of bottom.For example; Multimode terminal is given tacit consent to the PDP link that has activated 3G network in start process; The PDP that the PDP management level receive MMS activates when asking; If multimode terminal detects the network (like GPRS) that is fit to MMS, then PDP management level and the PDP link switchover between the network are arrived the PDP link of the corresponding network of MMS.Thereby, can choose optimal network for the PS business of carrier state information and carry out transfer of data, and in handoff procedure, keep upper strata PDP link not break off, realized the seamless switching of network.
2) the PS of carrier state information is not professional; Network measuring mechanism that the PDP management level are integrated; The sense terminals radio circuit receives the TD/WIFI/LTE network signal in real time, so that real-time switching for the PDP link layer in the PS downloading process guarantees that single channel PDP link is optimum.Except first via acquiescence PDP link is initiatively to be issued the request by the start flow process, the activation PDP link request after the PS business carries out detecting available network in the process is independently accomplished by the PDP management level, and network state is carried out real-time servicing.
Fig. 6 is the structured flowchart according to the PDP management level of the embodiment of the invention, and is as shown in Figure 6, and the PDP management level can comprise: network signal detection module 602 and evaluates calculation module 604.Wherein, network signal detection module 602 is used between multimode terminal and network side the process through the PS business datum of the PDP link transmission user request that activated, detects the signal quality of the heterogeneous networks in the current network environment.Evaluates calculation module 604 is used for the said signal quality of comparing cell signal detection module 602 detected heterogeneous networks.Preferably, the signal quality of embodiment of the invention detection and assessment can comprise: signal strength signal intensity and signal stabilization degree.
The RIL layer realizes that mainly the PDP activating request message that the PDP management level are issued converts concrete AT order to and is issued to CP to activate corresponding PDP link.CP mainly realizes the required 3GPP agreement support in carrying out business procedure of 3G terminal, and directly and the network of eating dishes without rice or wine carry out alternately.
Fig. 7 is the sketch map according to the multi-mode terminal service handoff procedure of the embodiment of the invention, and below in conjunction with Fig. 7, downloading with the PS data is example, the embodiment of the invention is done describing in further detail.
Starting up of terminal covers the PDP link based on TD or EDGE activation acquiescence according to 3G network.User's operating application program is initiated the PS download request.The terminal is in the position 1 general network area of coverage only has 3G network, and PS downloads and carries out transfer of data through 3G network.
Multimode terminal moves to position 2, gets into TD and WIFI network coverage area.At this moment; Network measuring module 602 detects current location and has TD and two kinds of networks of WIFI, and carries out COMPREHENSIVE CALCULATING and assessment for signal strength signal intensity and stability, carries out evaluation process for current area information; If a little less than the WIFI signal strength signal intensity; And the user then assesses TD still more by force than stabilization signal in high-speed mobile, then do not switch; If it is very strong in current environment, to detect the signal strength signal intensity of WIFI, and the user is stable at this cell information, then switches after the comprehensive assessment.Keep the link of current TD not discharge, issue the link that activates WIFI in the PDP management level.After activating successfully, switch in the PDP management level once more, if handover success then report application.
Multimode terminal moves to position 3; Network measuring module 602 detects current location and has TD, WIFI, three kinds of networks of LTE; And carry out COMPREHENSIVE CALCULATING and assessment for signal strength signal intensity and stability, and the PDP management level can be assessed handover network type and switching time, and the PDP management initiatively issues the deexcitation request discharges LTE network correspondence to RIL PDP link; Refresh the PDP of maintenance, interrupt transfer of data this PDP link.
Pass through the embodiment of the invention; Multimode terminal carries out PS and downloads in moving; No matter there be one or more in EDGE, TD, WIFI, several kinds of networks of LTE in network environment, and the terminal at utmost utilizes the optimal network in the current location available network through the PDP management level.Adopt and do not break off current PDP link; Newly-increased PDP link is adopted independent link setup, carry out the mechanism of seamless switching then, carry out the input of many networks through the network measuring module; And carry out COMPREHENSIVE CALCULATING and assessment for signal strength signal intensity and stability; And just carry out network after assessing for user's current area information and switch, guarantee to switch back single channel PS downloading rate and be in optimum state always, improved the professional user experience of PS.
From above description; Can find out; The present invention has realized following technique effect: the PDP management level are carried out in the process in the PS business, detect and assess the signal quality of heterogeneous networks in the multimode terminal network environment of living in, the corresponding PDP link of network that the requesting activation signal quality is optimum; Transmission link between PDP management level and the network side is switched to the PDP link of activation; And PDP management level and upper layer application keep switching PDP link before, have realized the seamless switching under many nets fusions, have improved the stability of PDP link in the network switching process.And carry out the PS business through the best network of signal quality according to the assessment result of signal quality, and make that single channel PDP link transmission is fastest, improved the professional user experience of PS.Simultaneously, with the parameter that the signal strength signal intensity and the signal stabilization degree of network are assessed as network signal quality, realized that choosing the optimum network of signal stabilization degree for multimode terminal carries out the PS business, has further improved PS traffic transmission speed.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a multi-mode terminal service changing method is characterized in that, comprising:
In the process of the packet switching PS business datum that packet data protocol PDP management level are asked through a PDP link transmission user who has activated between said multimode terminal and network side; Detect the signal quality of the heterogeneous networks in the current network environment; Wherein, said PDP management level are between the ccf layer and radio access layer of multimode terminal;
The said signal quality of the more detected heterogeneous networks of said PDP management level, the 2nd corresponding PDP link of network that the requesting activation signal quality is optimum;
After said the 2nd PDP link activation success, said PDP management level switch to said the 2nd PDP link with the transmission link between said PDP management level and the network side.
2. method according to claim 1 is characterized in that, before the packet data exchanged PS business datum of asking through a PDP link transmission user who has activated between said multimode terminal and the network side, also comprises:
In the start process of said multimode terminal or during response PS service request, the corresponding said PDP link of the preset network of requesting activation;
Response user's request is through the PS business datum of said PDP link transmission user request.
3. method according to claim 1 is characterized in that, said PDP management level switch to the transmission link between said PDP management level and the network side after said the 2nd PDP link, and said method also comprises:
The upstream data that will send to network side through a said PDP link is handled via VPN and is redispatched to said the 2nd PDP link, and through said the 2nd PDP link with said transmitting uplink data to network side;
Through said the 2nd PDP link the downlink data that said network side sends is redispatched to a said PDP link via the VPN processing, and through the upper layer application of a said PDP link with said downlink data transmission to said multimode terminal.
4. according to each described method in the claim 1 to 3, it is characterized in that said signal quality comprises: the signal strength signal intensity of network, and/or, the signal stabilization degree of network.
5. method according to claim 4 is characterized in that, the said signal quality of the more detected heterogeneous networks of said PDP management level comprises:
The said signal strength signal intensity of more detected said heterogeneous networks, and/or, the said signal stabilization degree of more detected heterogeneous networks.
6. method according to claim 5 is characterized in that, the 2nd corresponding PDP link of network that said PDP management level requesting activation signal quality is optimum comprises:
Corresponding said the 2nd PDP link of network that signal strength signal intensity described in the detected heterogeneous networks of requesting activation and/or said signal stabilization degree are best.
7. according to each described method in the claim 1 to 3, it is characterized in that, the said signal quality of the more detected heterogeneous networks of said PDP management level, the 2nd corresponding PDP link of network that the requesting activation signal quality is optimum comprises:
The professional corresponding relation with network of said PDP management level according to the PS that is provided with in advance, judge current detection to network in whether have professional corresponding network with the PS of current executed, if, the 2nd PDP link of this network correspondence of requesting activation then.
8. a multi-mode terminal service switching device shifter between the ccf layer and radio access layer of multimode terminal, is characterized in that,
Comprise:
Detection module is used between said multimode terminal and network side the process through the packet data exchanged PS business datum of the PDP link transmission user request that activated, detects the signal quality of the heterogeneous networks in the current network environment;
Evaluation module is used for the said signal quality of the detected heterogeneous networks of more said detection module, the 2nd corresponding PDP link of network that the requesting activation signal quality is optimum;
Handover module is used for after said the 2nd PDP link activation success, the transmission link between said PDP management level and the network side being switched to said the 2nd PDP link.
9. device according to claim 8 is characterized in that, said device also comprises:
First transport module, the upstream data that is used for will sending to network side through a said PDP link is handled via VPN and is redispatched to said the 2nd PDP link, and through said the 2nd PDP link with said transmitting uplink data to network side;
Second transport module; Be used for the downlink data that said network side sends being redispatched to a said PDP link via the VPN processing through said the 2nd PDP link, and through the upper layer application of a said PDP link with said transmitting uplink data to said multimode terminal.
10. according to Claim 8 or 9 described devices, it is characterized in that the signal quality that said detection module detected comprises:
The signal strength signal intensity of network, and/or, the signal stabilization degree of network.
11. device according to claim 10 is characterized in that, said evaluation module comprises:
First comparing unit is used for the said signal strength signal intensity of the detected said heterogeneous networks of more said detection module; And/or
Second comparing unit is used for the said signal stabilization degree of the detected heterogeneous networks of more said detection module.
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| CN201210006013.0A CN102448136B (en) | 2012-01-10 | 2012-01-10 | Multi-mode terminal service switching method and device |
| PCT/CN2012/073803 WO2013104152A1 (en) | 2012-01-10 | 2012-04-11 | Service switching method and device for multimode terminal |
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| CN201210006013.0A CN102448136B (en) | 2012-01-10 | 2012-01-10 | Multi-mode terminal service switching method and device |
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| CN102448136B (en) | 2018-09-28 |
| WO2013104152A1 (en) | 2013-07-18 |
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