CN102448136B - Multi-mode terminal service switching method and device - Google Patents
Multi-mode terminal service switching method and device Download PDFInfo
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- CN102448136B CN102448136B CN201210006013.0A CN201210006013A CN102448136B CN 102448136 B CN102448136 B CN 102448136B CN 201210006013 A CN201210006013 A CN 201210006013A CN 102448136 B CN102448136 B CN 102448136B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
Abstract
The invention discloses a kind of multi-mode terminal service switching method and devices.Wherein, this method includes：During the packet switch PS business datums that packet data protocol PDP management level are asked between multimode terminal and network side by activated first PDP link transmission users, detect the signal quality of the heterogeneous networks in current network conditions, wherein, PDP management level are located between the ccf layer and radio access layer of multimode terminal；The signal quality for the heterogeneous networks that PDP management level relatively detect asks the corresponding 2nd PDP links of network of activation signal optimal quality；After the success of the 2nd PDP link activations, the transmission link between PDP management level and network side is switched to the 2nd PDP links by PDP management level.Through the invention so that multimode terminal can seamlessly switch to the optimal network of current signal quality, improve the transmission speed of PS business datums in net integrated environment.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of multi-mode terminal service switching method and device.
Background technology
Expert assesses following China and will form 2G, 3G and 4G in for quite a long time and deposit the situation of complementary development, without
It is that simple upgrading is replaced.To long term evolution (Long-Term Evolution, referred to as LTE) (between 3G and 4G technologies
Transition, it improves and enhances the air interface technologies of 3G), 4G etc. is while carry out technical research, Domestic Carriers are being grabbed
The tight time carries out the covering and optimization of disparate networks.
In addition, with the continuous covering of 3G network, the continuous development of smart mobile phone, wireless data traffic in sharp increase,
It exerts heavy pressures on to the mobile ecosystem.The estimation of IHS Screen Digest shows that there are about the numbers of 2,300,000 TB in 2010
According to by wireless network transmissions, and the annual growth rate of coming years mobile data flow all will be above 80%, by 2014
It is up to 30,000,000 TB.So huge flow promotes cellular carrier to release 4G infrastructure, to improve connection speed and change
Kind capacity.So far, 17 networks for belonging to 4G LTE standards are completed, also 117 operators promise to undertake releases in the coming years
This 4G networks.
Therefore, under the network condition of multi-internet integration, the complex network pattern of multi-internet integration how is adapted to, is provided to the user
High-speed packet exchanges (Packet Switched, referred to as PS) business, becomes a major issue.In the related technology, only TD
With the simple handoff technique of Wireless Fidelity (Wireless Fidelity, referred to as WIFI), the still not no technical side of multi-internet integration
Case.Meanwhile the simple switching of TD and WIFI is divided into active detecting and passively two kinds of mechanism of switching, both mechanism are from structure and reason
From the point of view of, it is all susceptible to packet data protocol (Packet Data Protocol, referred to as PDP) link open circuit in switching,
To influence the user experience of user's PS business.How under the network environment of multi-internet integration, realize heterogeneous networks without seaming and cutting
It changes, and reaches the fastest problem of single channel PDP link transmissions, currently no effective solution has been proposed.
Invention content
For the seamless switching for realizing heterogeneous networks under the network environment of multi-internet integration, reach single channel PDP link transmissions
Fastest problem, the present invention provides a kind of multi-mode terminal service switching method and devices, at least to solve the above problems.
According to an aspect of the invention, there is provided a kind of multi-mode terminal service switching method, including：Packet data protocol
The packet switch that PDP management level are asked between multimode terminal and network side by activated first PDP link transmission users
During PS business datums, the signal quality of the heterogeneous networks in current network conditions is detected, wherein PDP management level are located at
Between the ccf layer and radio access layer of multimode terminal；The signal quality for the heterogeneous networks that PDP management level relatively detect, request
The corresponding 2nd PDP links of network of activation signal optimal quality；After the success of the 2nd PDP link activations, PDP management level will
Transmission link between PDP management level and network side is switched to the 2nd PDP links.
Preferably, the grouping asked by activated first PDP link transmission users between multimode terminal and network side
Before data exchange PS business datums, further include：In the start process of multimode terminal or when response PS service requests, request swashs
The corresponding first PDP links of default network living；The request for responding user, the PS industry asked by the first PDP link transmission users
Business data.
Preferably, PDP management level by the transmission link between PDP management level and network side be switched to the 2nd PDP links it
Afterwards, the above method further includes：By the first PDP links by the upstream data for being sent to network side via VPN processing retransmit to
2nd PDP links, and by the 2nd PDP links by transmitting uplink data to network side；Network side is sent out by the 2nd PDP links
The downlink data sent is retransmited via VPN processing to the first PDP links, and by the first PDP links by downlink data transmission extremely
The upper layer application of multimode terminal.
Preferably, above-mentioned signal quality includes：The signal strength of network, and/or, the signal stabilization degree of network.
Preferably, the signal quality for the heterogeneous networks that PDP management level relatively detect, including：Compare the difference detected
The signal strength of network, and/or, compare the signal stabilization degree of the heterogeneous networks detected.
Preferably, the corresponding 2nd PDP links of network of PDP management level request activation signal optimal quality, including：Request
Activate signal strength in the heterogeneous networks that detect and/or the best corresponding 2nd PDP links of network of signal stabilization degree.
Preferably, the signal quality for the heterogeneous networks that PDP management level relatively detect, request activation signal quality is most
The corresponding 2nd PDP links of excellent network, including：PDP management level according to the correspondence of pre-set PS business and network,
Judge to whether there is network corresponding with currently performed PS business in currently detected network, if it is, request activation
The corresponding 2nd PDP links of the network.
According to another aspect of the present invention, a kind of multi-mode terminal service switching device is provided, multimode terminal is located at
Between ccf layer and radio access layer, including：Detection module, for passing through activated the between multimode terminal and network side
During the packet data exchanged PS business datums of one PDP link transmission users request, detect in current network conditions not
With the signal quality of network；Evaluation module, the signal quality for comparing the heterogeneous networks that detection module detects, request activation
The corresponding 2nd PDP links of the optimal network of signal quality；Handover module is used for after the success of the 2nd PDP link activations, will
Transmission link between PDP management level and network side is switched to the 2nd PDP links.
Preferably, above-mentioned apparatus further includes：First transmission module will be sent to network side for passing through the first PDP links
Upstream data retransmited to the 2nd PDP links via VPN processing, and by the 2nd PDP links by transmitting uplink data to net
Network side；Second transmission module, for being retransmited the downlink data that network side is sent via VPN processing by the 2nd PDP links
To the first PDP links, and by the first PDP links by the upper layer application of transmitting uplink data to multimode terminal.
Preferably, the signal quality that detection module is detected includes：The signal strength of network, and/or, the signal of network is steady
Fixed degree.
Preferably, above-mentioned evaluation module, including：First comparing unit, the different nets detected for comparing detection module
The signal strength of network；And/or second comparing unit, the signal stabilization degree for comparing the heterogeneous networks that detection module detects.
Through the invention, PDP management level are during PS business carries out, network environment residing for detect and assess multimode terminal
The signal quality of middle heterogeneous networks asks the corresponding PDP links of network of activation signal optimal quality, by PDP management level and net
Transmission link between network side is switched to the PDP links of activation, and PDP management level keep the PDP before switching with upper layer application
Link realizes the seamless switching under multi-internet integration, improves the stability of PDP links in network switching process.And according to letter
The assessment result of number quality passes through the best network of signal quality and carries out PS business so that and single channel PDP link transmissions are fastest,
Improve the user experience of PS business.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structure diagram of multi-mode terminal service switching device according to the ... of the embodiment of the present invention；
Fig. 2 is a kind of structure diagram of preferred multi-mode terminal service switching device according to embodiments of the present invention；
Fig. 3 is the structure diagram of preferred evaluation module according to embodiments of the present invention；
Fig. 4 is the flow chart of multi-mode terminal service switching method according to the ... of the embodiment of the present invention；
Fig. 5 is the structure diagram of multimode terminal according to the ... of the embodiment of the present invention；
Fig. 6 is the structure diagram of PDP management level according to the ... of the embodiment of the present invention；
Fig. 7 is the schematic diagram of multi-mode terminal service handoff procedure according to the ... of the embodiment of the present invention.
Specific implementation mode
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
For in the related technology, how under the network environment of multi-internet integration, realize PS business between the different networks without
The problem that seaming and cutting change and make single channel PDP link transmissions fastest, an embodiment of the present invention provides a kind of multi-mode terminal services
Switching method and device.By taking Android intelligence multimode terminals as an example, it is added in the ccf layer and radio access layer of multimode terminal
PDP management level are managed the PDP links of heterogeneous networks so that under the network environment of multi-internet integration, it is also ensured that single
Road PS data link speed and the optimal purpose of stability, to improve the user experience of PS business.
Embodiment one
According to embodiments of the present invention, a kind of multi-mode terminal service switching device is provided, the ccf layer of multimode terminal is located at
Between radio access layer, it is used for the signal quality of detect and assess heterogeneous networks, the top-quality network of activation signal to correspond to
PDP links, the transmission link between PDP management level and network side is switched to the PDP links of activation, realizes under multi-internet integration
Seamless switching, and make single channel PDP link transmissions it is fastest.
Fig. 1 is the structure diagram of multi-mode terminal service switching device according to the ... of the embodiment of the present invention, as shown in Figure 1, the dress
It sets and may include：Detection module 10, evaluation module 20 and handover module 30.Wherein, detection module 10, for multimode terminal with
The process of packet data exchanged (PS) business datum asked by activated first PDP link transmission users between network side
In, detect the signal quality of the heterogeneous networks in current network conditions.Evaluation module 20 is coupled with detection module 10, is used for
Compare the signal quality for the heterogeneous networks that detection module 10 detects, asks the network of activation signal optimal quality corresponding
(i.e. the corresponding PDP links of the optimal network of signal quality, in embodiments of the present invention, description for convenience will for 2nd PDP links
It is known as the 2nd PDP links).Handover module 30 is coupled with evaluation module 20, is used for after the success of the 2nd PDP link activations,
Transmission link between PDP management level and network side is switched to the 2nd PDP links.
Through the embodiment of the present invention, during PS business carries out, the signal quality of detect and assess heterogeneous networks, and swash
The best corresponding PDP links of network of signal quality living, activation is switched to by the transmission link between PDP management level and network side
PDP links, and PDP management level and upper layer application keep the PDP links before switching, realize under multi-internet integration without seaming and cutting
It changes, improves the stability of PDP links in network switching process.And according to the assessment result of signal quality by signal quality most
Good network carries out PS business so that single channel PDP link transmissions are fastest.
In a preferred embodiment of the embodiment of the present invention, can in the start process of multimode terminal or response PS
When service request, the corresponding first PDP links of network are preset in request activation.After the success of first PDP link activations, multimode terminal is rung
Using the request at family, the PS business datums asked by the first PDP link transmission users of activation.For example, multimode can be arranged
The default network of terminal is LTE network, then in start process or when response PS service requests, multimode terminal activates LTE nets
The PDP links (i.e. the first PDP links) of network carry out the PS business of user's request by the PDP links of LTE network.It is excellent by this
Embodiment is selected, the default network that multimode terminal carries out PD business can be set, enhance what user selected PS business networks
Flexibility.
After transmission link between PDP management level and network side is switched to the 2nd PDP links by handover module 30, PDP
Management level can manage the PS business data transmissions of the first PDP links and the 2nd PDP links, and the upper layer application of multimode terminal is sent out
Above-mentioned PS business datums are passed through by the PS business datums sent by the first PDP link transmissions to PDP management level, PDP management level
Two PDP link transmissions are to network side；Meanwhile the PS business datums for sending network side are managed by the 2nd PDP link transmissions to PDP
Layer is managed, the upper layer that PS business datums that network side is sent are sent to multimode terminal by PDP management level by the first PDP links is answered
With.
To achieve the goals above, in a preferred embodiment of the embodiment of the present invention, as shown in Fig. 2, above-mentioned dress
Setting to include：First transmission module 40, for by the first PDP links will be sent to the upstream data of network side via
VPN processing is retransmited to the 2nd PDP links, and by the 2nd PDP links by above-mentioned transmitting uplink data to network side.Second passes
Defeated module 50, for being retransmited the downlink data that network side is sent to the first PDP via VPN processing by the 2nd PDP links
Link, and by the first PDP links by the upper layer application of above-mentioned transmitting uplink data to multimode terminal.By this preferred implementation
Example, upper layer application keep the connection with activated first PDP links, PDP management level to complete the switching of the 2nd PDP links, lead to
It crosses the 2nd PDP links with network side to carry out data transmission, realizes the seamless switching of heterogeneous networks in multi-internet integration, be that multimode is whole
End provides optimal network and carries out PS business, improves the user experience of PS business.
In a preferred embodiment of the embodiment of the present invention, in order to assess the signal quality of heterogeneous networks, mould is detected
Block 10 can detect the signal strength of heterogeneous networks, and multimode terminal can carry out PS business by the optimal network of signal strength,
At this point, evaluation module 20, can compare the signal strength for the heterogeneous networks that detection module 10 detects, activation signal intensity is asked
The corresponding 2nd PDP links of optimal network.Handover module 30 switches the transmission link between PDP management level and network side
The corresponding 2nd PDP links of the network optimal to signal strength.By this preferred embodiment, using the signal strength of network as net
The parameter of network Signal quality assessment realizes and chooses the optimal network progress PS business of signal strength for multimode terminal, improves
The transmission speed of PS business.
In addition, detection module 10 can also detect the signal stabilization degree of heterogeneous networks, multimode terminal can be steady by signal
Surely it spends optimal network and carries out PS business, at this point, evaluation module 20, can compare the heterogeneous networks that detection module 10 detects
Signal stabilization degree, the optimal corresponding 2nd PDP links of network of request activation signal stability.Handover module 30, PDP is managed
Layer is switched to the corresponding 2nd PDP links of the optimal network of signal stabilization degree with the transmission link between network side.For example, assessment
Module 20 can judge UE currently whether in the high-speed mobile by positioning function, if it is, the signal stabilization degree of UE compared with
Difference.By this preferred embodiment, the parameter assessed using the signal stabilization degree of network as network signal quality realizes as multimode
Terminal chooses the optimal network of signal stabilization degree and carries out PS business, improves the transmission speed of PS business.
Further, detection module 10 can also detect the signal strength and signal stabilization degree of heterogeneous networks, multimode simultaneously
Terminal can carry out PS business by the optimal network of signal strength and signal stabilization degree, at this point, as shown in figure 3, evaluation module
20 may include：First comparing unit 202, the signal strength for comparing the heterogeneous networks that detection module 10 detects；
Second comparing unit 204, the signal stabilization degree for comparing the heterogeneous networks that detection module 10 detects.Evaluation module 20 can be with
According to comparison result, activation signal intensity and the optimal corresponding 2nd PDP links of network of signal stabilization degree are asked.Preferably,
It can be according to the weight of actual conditions setting signal intensity and signal stabilization degree so that assessment result can be strong with reference to signal
The size of degree and signal stabilization degree.After the completion of Signal quality assessment, trigger handover module 30, by PDP management level and network side it
Between transmission link be switched to signal strength and the optimal corresponding 2nd PDP links of network of signal stabilization degree, multimode terminal is logical
It crosses the 2nd PDP links and carries out PS business with network side.By this preferred embodiment, at the same it is steady with the signal strength of network and signal
The parameter assessed as network signal quality is spent calmly, is realized and is chosen the optimal network progress PS of signal stabilization degree for multimode terminal
Business further improves the transmission speed of PS business.
Corresponding to above-mentioned apparatus provided in an embodiment of the present invention, the embodiment of the present invention additionally provides a kind of multi-mode terminal service
Switching method, can be during PS business carries out, the signal quality of detect and assess heterogeneous networks, and activation signal is best in quality
The corresponding PDP links of network, the transmission link between PDP management level and network side is switched to the PDP links of activation, realize
Seamless switching under multi-internet integration, and make single channel PDP link transmissions fastest.
Fig. 4 is the flow chart of multi-mode terminal service switching method according to the ... of the embodiment of the present invention, as shown in figure 4, this method
May include following steps (step S402- step S406)：
Step S402, PDP management level are used between multimode terminal and network side by activated first PDP link transmissions
During the PS business datums of family request, the signal quality of the heterogeneous networks in current network conditions is detected, wherein PDP is managed
Reason layer is located between the ccf layer and radio access layer of multimode terminal.
The signal quality for the heterogeneous networks that step S404, PDP management level relatively detect asks activation signal quality
The corresponding 2nd PDP links of optimal network.
Step S406, after the success of the 2nd PDP link activations, PDP management level are by the biography between PDP management level and network side
Transmission link is switched to the 2nd PDP links.
Through the embodiment of the present invention, PDP management level are during PS business carries out, net residing for detect and assess multimode terminal
The signal quality of heterogeneous networks in network environment asks the corresponding PDP links of network of activation signal optimal quality (that is, the 2nd PDP
Link), the transmission link between PDP management level and network side is switched to the PDP links of activation, and PDP management level and upper layer
Using the PDP links kept before switching, the seamless switching under multi-internet integration is realized, PDP in network switching process is improved
The stability of link.And PS business is carried out by the best network of signal quality according to the assessment result of signal quality so that single
Road PDP link transmissions are fastest, improve the user experience of PS business.
Multimode terminal can be in start process or when response PS service requests, and network corresponding first is preset in request activation
PDP links.After the success of first PDP link activations, multimode terminal responds the request of user, is passed by the first PDP links of activation
The PS business datums of defeated user's request.Therefore, in a preferred embodiment of the embodiment of the present invention, multimode terminal and network
Before the packet data exchanged PS business datums asked by activated first PDP link transmission users between side, multimode is whole
End is in start process or when response PS service requests, can ask to activate the corresponding first PDP links of default network, and first
The request of user, the PS business datums asked by the first PDP link transmission users are responded after the success of PDP link activations.For example,
The default network that multimode terminal can be arranged is LTE network, then in start process or when response PS service requests, multimode is whole
The PDP links (i.e. the first PDP links) of end activation LTE network, the PS industry of user's request is carried out by the PDP links of LTE network
Business.
In a preferred embodiment of the embodiment of the present invention, in order to assess the signal quality of heterogeneous networks, PDP management
Layer can detect the signal strength of heterogeneous networks, and multimode terminal can carry out PS business by the optimal network of signal strength, this
When can compare the signal strengths of the heterogeneous networks detected, optimal corresponding 2nd PDP of network of request activation signal intensity
Link.After the success of the 2nd PDP link activations, the transmission link between PDP management level and network side is switched to by PDP management level
The corresponding 2nd PDP links of the optimal network of signal strength.By this preferred embodiment, using the signal strength of network as network
The parameter of Signal quality assessment realizes and chooses the optimal network progress PS business of signal strength for multimode terminal, improves PS
The transmission speed of business.
In addition, PDP management level can also detect the signal stabilization degree of heterogeneous networks, multimode terminal can pass through signal stabilization
It spends optimal network and carries out PS business, the signal stabilization degree of the heterogeneous networks detected can be compared at this time, ask activation signal
The corresponding 2nd PDP links of the optimal network of stability.After the success of 2nd PDP link activations, PDP management level are by PDP management level
Transmission link between network side is switched to the corresponding 2nd PDP links of the optimal network of signal stabilization degree.For example, assessment mould
Block 20 can judge UE currently whether in the high-speed mobile by positioning function, if it is, the signal stabilization degree of UE compared with
Difference, if it is not, then the signal stabilization degree of UE is good.By this preferred embodiment, using the signal stabilization degree of network as network signal
The parameter of quality evaluation realizes and chooses the optimal network progress PS business of signal stabilization degree for multimode terminal, improves PS industry
The transmission speed of business.
Further, PDP management level can also detect the signal strength and signal stabilization degree of heterogeneous networks simultaneously, and multimode is whole
End can carry out PS business by the optimal network of signal strength and signal stabilization degree, be detected at this point it is possible to compare simultaneously
The signal strength and signal stabilization degree of heterogeneous networks, and ask activation signal intensity and the optimal network pair of signal stabilization degree
The 2nd PDP links answered.It preferably, can be according to the weight of actual conditions setting signal intensity and signal stabilization degree so that comment
Estimating result can be with reference to the size of signal strength and signal stabilization degree.After the completion of Signal quality assessment, PDP management level will
Transmission link between PDP management level and network side is switched to signal strength and the optimal network corresponding second of signal stabilization degree
PDP links, multimode terminal carry out PS business by the 2nd PDP links and network side.By this preferred embodiment, while with network
Signal strength and the parameter assessed as network signal quality of signal stabilization degree, realize and choose signal stabilization for multimode terminal
It spends optimal network and carries out PS business, further improve the transmission speed of PS business.
In a preferred embodiment of the embodiment of the present invention, the institute for the heterogeneous networks that PDP management level relatively detect
Signal quality is stated, the corresponding 2nd PDP links of network of activation signal optimal quality is asked, may include：PDP management level according to
The correspondence of pre-set PS business and network judges to whether there is and currently performed PS in currently detected network
The corresponding network of business, if it is, request activates the corresponding 2nd PDP links of the network.For example, for carrier state information
PS business activates the PDP links of corresponding network, by PDP management level and net when detecting the corresponding network of the PS business of the type
The PDP links of link switching extremely activation between network side.Can be that the PS business of carrier state information is selected by this preferred embodiment
It takes optimal network to carry out data transmission, improves the user experience of PS business.
After transmission link between PDP management level and network side is switched to the 2nd PDP links by PDP management level, PDP pipes
Reason layer can manage the PS business data transmissions of the first PDP links and the 2nd PDP links, and the upper layer application of multimode terminal is sent
PS business datums by the first PDP link transmissions to PDP management level, above-mentioned PS business datums are passed through second by PDP management level
PDP link transmissions are to network side；Meanwhile the PS business datums for sending network side are managed by the 2nd PDP link transmissions to PDP
PS business datums that network side is sent are sent to the upper layer application of multimode terminal by layer, PDP management level by the first PDP links.
Therefore, in a preferred embodiment of the embodiment of the present invention, PDP management level are by PDP management level and network side
Between transmission link be switched to after the 2nd PDP links, the upper line number of network side can will be sent to by the first PDP links
It is retransmited to the 2nd PDP links according to via VPN processing, and by the 2nd PDP links by transmitting uplink data to network side；Together
When, the downlink data that network side is sent can be retransmited via VPN processing to the first PDP links by the 2nd PDP links, and
By the first PDP links by the upper layer application of above-mentioned downlink data transmission to multimode terminal.It preferably, can be in PDP management level
VPN is built, the data uploaded by the 2nd PDP links, which are based on VPN, uploads data to AP.
Embodiment two
According to embodiments of the present invention, by taking smart mobile phone Android platform as an example, according to the framework of Android platform, PS industry
Data of being engaged in (Framework) from application layer AP to ccf layer, from ccf layer again to radio access layer (Radio interface
Layer, referred to as RIL), it is last transmitted to the mechanism of CP.PDP management level are added in ccf layer and radio access layer, for
PDP links are managed, and are reached under conditions of EDGE/TD/WIFI/LTE multi-internet integrations, it is also ensured that single channel PS data-links
Road speed and the optimal state of stability.
In order to adapt to the complex network pattern of multi-internet integration, and achieve the purpose that single channel PDP link speeds of download are most fast,
In multimode terminal as shown in Figure 5, application subsystem (AP) builds a PDP management level between RIL and Framework,
Be switched on default activation PDP all the way.PDP management level receive the network carrying and need to carry out inter-network handover, are downloaded with obtaining optimal PS
When state, maintains to issue request to RIL by PDP management level while current PDP links, be activated on current optimal network another
Data transmission is switched to the PS links by PDP links all the way after activating successfully, by information such as the IP gateways of newest activation PS links
PDP management level are reported, but are not reported to AP.Layer building VPN is managed in PDP, the data that newest PS links are uploaded are based on VPN
Data are passed to AP.It is thus possible to ensure that single channel PS speeds of download are most fast, realize PS business between the different networks without seaming and cutting
It changes, without breaking phenomena.
Framework modules in Android platform are mainly used for the request message that receiving area's reason application program issues,
And judge whether request message is PS service requests, it is handled if it is request message is sent to PDP management level, go forward side by side PS
Data interaction；Otherwise, request message is sent directly to RIL processing.
PDP management level handle the acquiescence PDP activation request message that Framework is issued, simultaneously mainly in start process
PDP activation request message is sent according to TD, WIFI, LTE network environmental management.One VPN of layer building is managed in PDP, for counting
According to transfer management, following two situations can be divided into：
1) the PS business of status information is carried.PDP management level receive the request of such PDP activation, and different business corresponds to
Different PDP links will choose in optimal network current all available networks and carry out, Framework layers of PDP links and bottom
The PDP links one-to-one correspondence of layer carries out data transmission.For example, multimode terminal default activation 3G network in start process
PDP links, when PDP management level receive the PDP activation request of MMS business, if multimode terminal detects suitable MMS business
Network (such as GPRS), then by the PDP link switchings between PDP management level and network to the PDP of the corresponding network of MMS business
Link.To choose most suitable network for the PS business of carrier state information and carry out data transmission, and in handoff procedure
Middle holding upper layer PDP links do not turn off, and realize the seamless switching of network.
2) without the PS business of status information, PDP management level are integrated with network testing mechanism, real-time detection terminal radio frequency electrical
Road receives TD/WIFI/LTE network signals, to be switched in real time for PDP link layers in PS downloading process, protects
It is optimal to demonstrate,prove single channel PDP links.In addition to the first via acquiescence PDP links be by starting procedure actively issue request other than, PS business into
The activation PDP link requests after available network are detected during row by PDP management level complete independentlies, and network state carries out
Real-time servicing.
Fig. 6 is the structure diagram of PDP management level according to the ... of the embodiment of the present invention, as shown in fig. 6, PDP management level can wrap
It includes：Network signal detection module 602 and assessment computing module 604.Wherein, network signal detection module 602, at multimode end
Hold network side between by activated PDP link transmissions user ask PS business datums during, detect current net
The signal quality of heterogeneous networks in network environment.Computing module 604 is assessed, is detected for comparing cell signal detection module 602
The signal quality of the heterogeneous networks arrived.Preferably, the signal quality of detect and assess of the embodiment of the present invention may include：Letter
Number intensity and signal stabilization degree.
RIL layers of main realization are converted into specific AT orders to the PDP activation request message that PDP management level issue and are issued to
CP is to activate corresponding PDP links.CP mainly realizes that the 3GPP agreements needed for progress business procedure of 3G terminal are supported, and
Directly interacted with network of eating dishes without rice or wine.
Fig. 7 is the schematic diagram of multi-mode terminal service handoff procedure according to the ... of the embodiment of the present invention, with reference to Fig. 7, with PS
For data are downloaded, the embodiment of the present invention is described in further detail.
Starting up of terminal, according to PDP link of the 3G network covering based on TD or EDGE activation acquiescences.User's operation application journey
Sequence initiates PS and downloads request.Terminal is in the 1 general network area of coverage of position and only has 3G network, and PS, which is downloaded, passes through 3G network into line number
According to transmission.
Multimode terminal is moved to position 2, into TD and the WIFI network area of coverage.At this point, network detection module 602 detects
There are two kinds of networks of TD and WIFI for current location, and carry out COMPREHENSIVE CALCULATING and assessment for signal strength and stability, for working as
Preceding cell information carries out assessment processing, if WIFI signal intensity is weak, and user is in high-speed mobile, then assess TD still compared with
By force compared with stabilization signal, then without switching；If detecting that the signal strength of WIFI is very strong in current environment, and user exists
The cell information is stablized, then is switched over after comprehensive assessment.It keeps the link of current TD not discharge, is issued in PDP management level sharp
The link of WIFI living.It after activating successfully, is switched over again in PDP management level, application is reported to if switching successfully.
Multimode terminal is moved to position 3, and network detection module 602 detects that there are tri- kinds of TD, WIFI, LTE for current location
Network, and COMPREHENSIVE CALCULATING and assessment are carried out for signal strength and stability, PDP management level can carry out assessment handover network type
And switching time, PDP management actively issue deactivation request to the corresponding PDP links of RIL releases LTE network, refresh maintenance
PDP interrupts the data transmission to the PDP links.
Through the embodiment of the present invention, multimode terminal carries out PS downloads on the move, no matter network environment there are EDGE, TD,
One or more in several networks of WIFI, LTE, terminal utmostly can use net by PDP management level using current location
Optimal network in network.Using current PDP links are not turned off, independent link setup is used to newly-increased PDP links, then carries out no seaming and cutting
The mechanism changed, the signal detection of Multi net voting is carried out by network detection module, and signal strength and stability are integrated
It calculates and assesses, and just carry out network switching after being assessed for user's current cell information, ensure single channel PS after switching
Downloading rate is constantly in optimal state, improves the user experience of PS business.
It can be seen from the above description that the present invention realizes following technique effect：PDP management level PS business into
During row, the signal quality of heterogeneous networks in network environment residing for detect and assess multimode terminal asks activation signal quality
Transmission link between PDP management level and network side, is switched to the PDP links of activation by the corresponding PDP links of optimal network,
And PDP management level keep the PDP links before switching with upper layer application, realize the seamless switching under multi-internet integration, improve
The stability of PDP links in network switching process.And the best network of signal quality is passed through according to the assessment result of signal quality
Carry out PS business so that single channel PDP link transmissions are fastest, improve the user experience of PS business.Meanwhile with the letter of network
The parameter that number intensity and signal stabilization degree are assessed as network signal quality realizes and chooses signal stabilization degree most for multimode terminal
Excellent network carries out PS business, further improves the transmission speed of PS business.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein
The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of multi-mode terminal service switching method, which is characterized in that including：
Packet data protocol PDP management level are passed between the multimode terminal and network side by activated first PDP links
During the packet switch PS business datums of defeated user's request, the signal matter of the heterogeneous networks in current network conditions is detected
Amount, wherein the PDP management level are located between the ccf layer and radio access layer of multimode terminal；
The signal quality for the heterogeneous networks that the PDP management level relatively detect asks the net of activation signal optimal quality
The corresponding 2nd PDP links of network；
After the 2nd PDP link activations success, the PDP management level are by the biography between the PDP management level and network side
Transmission link is switched to the 2nd PDP links.
2. according to the method described in claim 1, it is characterized in that, by activated between the multimode terminal and network side
Before the packet data exchanged PS business datums of first PDP link transmission users request, further include：
In the start process of the multimode terminal or when response PS service requests, network corresponding described the is preset in request activation
One PDP links；
The request for responding user, the PS business datums asked by the first PDP link transmission users.
3. according to the method described in claim 1, it is characterized in that, the PDP management level are by the PDP management level and network side
Between transmission link be switched to after the 2nd PDP links, the method further includes：
The upstream data for being sent to network side is retransmited via VPN processing to the 2nd PDP by the first PDP links
Link, and by the 2nd PDP links by the transmitting uplink data to network side；
The downlink data that the network side is sent is retransmited via VPN processing to described first by the 2nd PDP links
PDP links, and by the first PDP links by the downlink data transmission to the upper layer application of the multimode terminal.
4. according to the method in any one of claims 1 to 3, which is characterized in that the signal quality includes：The letter of network
Number intensity, and/or, the signal stabilization degree of network.
5. according to the method described in claim 4, it is characterized in that, heterogeneous networks that the PDP management level relatively detect
The signal quality, including：
Compare the signal strength of the heterogeneous networks detected, and/or, compare the letter of the heterogeneous networks detected
Number stability.
6. according to the method described in claim 5, it is characterized in that, the PDP management level ask activation signal optimal quality
The corresponding 2nd PDP links of network, including：
Signal strength described in the heterogeneous networks that detect of request activation and/or the signal stabilization degree it is best network it is corresponding
The 2nd PDP links.
7. according to the method in any one of claims 1 to 3, which is characterized in that the PDP management level relatively detected
The signal quality of heterogeneous networks asks the corresponding 2nd PDP links of network of activation signal optimal quality, including：
The PDP management level judge according to the correspondence of pre-set PS business and network in currently detected network
With the presence or absence of network corresponding with currently performed PS business, if it is, request activates the corresponding 2nd PDP chains of the network
Road.
8. a kind of multi-mode terminal service switching device is located between the ccf layer and radio access layer of multimode terminal, feature exists
In,
Including：
Detection module, for being asked by activated first PDP link transmission users between the multimode terminal and network side
During the packet data exchanged PS business datums asked, the signal quality of the heterogeneous networks in current network conditions is detected；
Evaluation module asks activation signal for the signal quality for the heterogeneous networks that the detection module detects
The corresponding 2nd PDP links of network of optimal quality；
Handover module is used for after the 2nd PDP link activations success, by the biography between the PDP management level and network side
Transmission link is switched to the 2nd PDP links.
9. device according to claim 8, which is characterized in that described device further includes：
First transmission module, for being handled the upstream data for being sent to network side again via VPN by the first PDP links
It is sent to the 2nd PDP links, and by the 2nd PDP links by the transmitting uplink data to network side；
Second transmission module, the downlink data for being sent the network side by the 2nd PDP links is via VPN processing
It retransmits to the first PDP links, and by the first PDP links by the transmitting uplink data to the multimode terminal
Upper layer application.
10. device according to claim 8 or claim 9, which is characterized in that the signal quality packet that the detection module is detected
It includes：
The signal strength of network, and/or, the signal stabilization degree of network.
11. device according to claim 10, which is characterized in that the evaluation module, including：
First comparing unit, the signal strength for the heterogeneous networks that the detection module detects；And/or
Second comparing unit, the signal stabilization degree for the heterogeneous networks that the detection module detects.
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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 true CN102448136B (en) | 2018-09-28 |
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| CN102707997B (en) * | 2012-06-12 | 2014-06-11 | 中兴通讯股份有限公司 | Device and method for driving multi-PDP data communication of mobile broadband equipment |
| CN103220615B (en) * | 2013-03-29 | 2015-12-23 | 北京智谷睿拓技术服务有限公司 | Realize the method for mobile communication business, mobile communication network device and mobile terminal |
| WO2016154921A1 (en) * | 2015-03-31 | 2016-10-06 | 华为技术有限公司 | Data transmission method and device for data service |
| CN105101316B (en) * | 2015-07-10 | 2020-02-11 | 山东聚盛联创信息科技有限公司 | Data transmission method and device for multiple data channels |
| CN105407512B (en) * | 2015-10-23 | 2018-07-13 | 广东欧珀移动通信有限公司 | A kind of method for switching network of mobile terminal, device and mobile terminal |
| CN110519858B (en) * | 2019-08-16 | 2021-06-08 | 浙江大华技术股份有限公司 | Channel access method, device, computer equipment and storage medium |
| CN110545566B (en) * | 2019-09-11 | 2021-04-27 | 腾讯科技（深圳）有限公司 | Link switching method, device, equipment and storage medium |
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| WO2013104152A1 (en) | 2013-07-18 |
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