CN110167014A - The solution and system of double card bilateral mobile terminal down going channel failure - Google Patents
The solution and system of double card bilateral mobile terminal down going channel failure Download PDFInfo
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- CN110167014A CN110167014A CN201910446659.2A CN201910446659A CN110167014A CN 110167014 A CN110167014 A CN 110167014A CN 201910446659 A CN201910446659 A CN 201910446659A CN 110167014 A CN110167014 A CN 110167014A
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- Prior art keywords
- card
- mobile terminal
- going channel
- down going
- downlink
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
The present invention provides a kind of solution of double card bilateral mobile terminal down going channel failure, and the solution includes: the type and IMSI that mobile terminal is shown to be double card bilateral terminal, 4G card and 3G/2G card to MME transmission message；The unilateral connection of downlink is established by 3G/2G card again, GGSN is that 3G/2G card distributes IP address, and is sent to 4G card；Subsequent 4G card issues down going channel switching request to PDN GW；After downlink data reaches PDN GW, destination address is converted to the IP address of 3G/2G card by PDN GW, and downlink data is transmitted to GGSN, then be sent to 3G/2G card by GGSN.System is solved the present invention also provides corresponding.Solution and system of the present invention solve the problems, such as to be unable to complete data receiver when the down going channel of 4G card breaks down, have ensured that user accesses the continuity of Internet service, improved the experience that user uses mobile terminal.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of solution of double card bilateral mobile terminal down going channel failure
Method and a kind of solution system of double card bilateral mobile terminal down going channel failure.
Background technique
Currently, the more universal configuration of mobile terminal is double-card dual-standby.Double card refers to that there are two card slot, energy on mobile terminal
Two USIM (Universal Subscriber Identity Module, universal subscriber identity identification module)/SIM are enough installed
(Subscriber Identity Module, user identification module) card, each USIM/SIM card can support one or
The multiple network formats of person, two USIM/SIM cards may belong to the same operator, can also adhere to different operators separately.Double standby function
It can refer to that mobile terminal supports two USIM/SIM cards respectively at two when two USIM/SIM cards support different network formats
It succeeds in registration on network, while standby；When two USIM/SIM cards support the same network formats, mobile terminal supports two
USIM/SIM is stuck on the same network and succeeds in registration, while standby.
Than double-card dual-standby more further be double card bilateral mobile terminal, double card bilateral mobile terminal, which can be also turned on, to be come from
The signal of two communication networks, for double card bilateral mobile terminal, when wherein a card is 4G card, when a card is 3G/2G card,
It is general to select 4G card as main card, to carry double card bilateral mobile terminal accessing Internet service, naturally it is also possible to by manual
Mode selects vice card bearer service, but at present can't be actively according to current main card network condition and vice card network condition and access
Internet service situation carry out specific aim selection main card or vice card bearer service.When mobile terminal accesses internet by main card
When business, if the down going channel of main card breaks down, such as eNodeB (evolved Node B, the node B of evolution), then downlink
Channel occur blocking can not transmit data and when good data feedback channel, cause to occur data feedback channel is idle and down going channel can not pass
The case where sending data makes user access Internet service and pauses, and user experience is bad, and the prior art can not also be good
Solve the problems, such as this.
Summary of the invention
There is the insurmountable technology of down going channel failure at least partly solve 4G card existing in the prior art to ask
It inscribes and completes the present invention.
Solving technical solution used by present invention problem is: the present invention is provided under a kind of double card bilateral mobile terminal
The solution of row of channels failure, the double card of the double card bilateral mobile terminal include 4G card and 3G/2G card, the solution
Include:
Mobile terminal sends message, message to MME (mobility management entity, Mobility Management Entity)
Content include the mobile terminal be double card bilateral mobile terminal, the type of 4G card and IMSI (international mobile subscriber identity,
International Mobile Subscriber Identity) and 3G/2G card type and IMSI；
After the down going channel of 4G card breaks down, when establishing the unilateral connection of downlink by 3G/2G card, (gateway leads to GGSN
It is 3G/ with grouping wireless business supporting node Gateway General Packet Radio Service Support Node)
2G card distributes IP address, and the IP address of distribution is sent to 4G card by 3G/2G card；
Under 4G card is issued by MME to PDN GW (packet data network gateway Packet data network-Gate Way)
Row of channels switching request, the request include the IP address of the distribution；
After being sent to the downlink data arrival PDN GW of 4G card, PDN GW is converted to the destination address of downlink data transmission
To the IP address that 3G/2G card distributes, and downlink data is transmitted to GGSN；
Downlink data is sent to 3G/2G card by GGSN, and 3G/2G card is by the application journey of downlink data transmission to mobile terminal
Sequence.
Further, before the mobile terminal sends message to MME further include: 4G card is attached to the network of 4G card
On, 3G/2G card is attached on the network of 3G/2G card.
Further, it is described the unilateral connection of downlink is established by 3G/2G card before further include: under the 4G card real-time monitoring
Row of channels data transmission situation, when 4G card monitors that down going channel does not receive data, while data feedback channel within a preset time
When can send data, judge that down going channel breaks down.
Further, double card bilateral mobile terminal includes communication module, described to establish the unilateral connection of downlink by 3G/2G card
Include:
4G card requires the unilateral connection of 3G/2G card start-up downlink by communication module；
3G/2G card issues activation PDP Context request to GGSN, and it is the unilateral connection of downlink that connection is specified in request；
GGSN is after 3G/2G card distributes IP address, and the unilateral connection of notice 3G/2G card downlink is established；
3G/2G card knows that the unilateral connection of downlink is established to 4G cartoon by communication module, and passes through communication module for distribution
IP address, which is sent to, gives 4G card, completes the unilateral connection of downlink.
Further, the 4G card includes: to PDN GW sending down going channel switching request by MME
4G card sends down going channel switching request to MME, the IMSI in request comprising 4G card and the destination IP after switching
Location is the IP address distributed to 3G/2G card；
MME issues down going channel switching request, the IMSI comprising 4G card and the destination IP after switching in request to PDN GW
Address is the IP address distributed to 3G/2G card.
Further, double card bilateral mobile terminal includes communication module, and downlink data is sent to 3G/2G by the GGSN
Card, 3G/2G card will be after the application program of downlink data transmission to mobile terminal further include: application program sends access internet industry
The upstream data of business is transmitted to 4G card to communication module, by communication module；Upstream data is sent to PDN GW by 4G card, by PDN
GW is transmitted to internet.
On the other hand, the present invention also provides a kind of solution systems of double card bilateral mobile terminal down going channel failure, comprising:
Double card bilateral mobile terminal, GGSN, MME and PDN GW, wherein the double card of double card bilateral mobile terminal includes 4G card and 3G/2G
Card；
The mobile terminal is used to send message to MME, and message content includes that the mobile terminal is mobile for double card bilateral
The type and IMSI of terminal, the type of 4G card and IMSI and 3G/2G card；
After the down going channel of 4G card breaks down, when establishing the unilateral connection of downlink by 3G/2G card, the GGSN is used for
IP address is distributed for 3G/2G card；3G/2G card is used to the IP address of distribution being sent to 4G card；
The 4G card is for sending down going channel switching request to MME；
The MME is used to receive the down going channel switching request of 4G card sending and is transmitted to PDN GW, and the request includes
The IP address distributed to 3G/2G card；
After the downlink data for being sent to 4G card reaches PDN GW, the PDN GW is used for the purpose of downlink data transmission
Address conversion is the IP address distributed to 3G/2G card, and downlink data is transmitted to GGSN；
The GGSN is also used to the downlink data that PDN GW is forwarded being sent to 3G/2G card；3G/2G card is used for lower line number
According to the application program for being transferred to mobile terminal.
Further, the 4G card is also used to real-time monitoring down going channel data transmission situation, when monitoring down going channel
Data are not received within a preset time, while when data feedback channel can send data, judge that down going channel breaks down.
Further, double card bilateral mobile terminal includes communication module, when establishing the unilateral connection of downlink by 3G/2G card,
The 3G/2G card is also used to issue activation PDP Context request to GGSN, and it is the unilateral connection of downlink that connection is specified in request；Institute
Communication module is stated for sending 4G card for the IP address distributed to 3G/2G card, completes the unilateral connection of downlink.
Further, double card bilateral mobile terminal includes communication module, and downlink data is sent to 3G/2G in the GGSN
Card, 3G/2G card is by after the application program of downlink data transmission to mobile terminal, and the communication module is for sending application program
The upstream data of access Internet service is transmitted to 4G card；The 4G card is also used to for upstream data being sent to PDN GW, above
It passes on internet.
The utility model has the advantages that
The solution and system of double card bilateral mobile terminal down going channel failure of the present invention, when the downlink of 4G card is logical
When road breaks down, the unilateral connection of downlink is established by 3G/2G card, and send the GGSN IP address for distributing to 3G/2G card to
PDN GW, is switched by down going channel, when there is downlink data to be sent to PDN GW, destination address is changed to give 3G/2G card
The IP address of distribution, makes downlink data be sent to mobile phone terminal by GGSN, when the down going channel for solving 4G card breaks down
The problem of being unable to complete data receiver, and then improve the experience that user uses mobile terminal.
Detailed description of the invention
Fig. 1 is the solution process for the double card bilateral mobile terminal down going channel failure that first embodiment of the invention provides
Figure；
Fig. 2 is the unilateral connection foundation of downlink and down going channel switching flow figure that first embodiment of the invention provides；
Fig. 3 is the structure that the double card bilateral mobile terminal down going channel failure that second embodiment of the invention provides solves system
Schematic diagram.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawings and examples to this
Invention is described in further detail.
Embodiment one
As shown in Figure 1, the present invention provides a kind of solution of double card bilateral mobile terminal down going channel failure, it is described double
The double card of card bilateral mobile terminal includes 4G card and 3G/2G card, and the solution includes:
S1: mobile terminal to MME send message, message content include the mobile terminal be double card bilateral mobile terminal,
The type of 4G card and the type and IMSI of IMSI and 3G/2G card；
S2: after the down going channel of 4G card breaks down, when establishing the unilateral connection of downlink by 3G/2G card, GGSN 3G/
2G card distributes IP address, and the IP address of distribution is sent to 4G card by 3G/2G card；
S3:4G card issues down going channel switching request, the IP of the request comprising the distribution to PDN GW by MME
Location；
S4: after being sent to the downlink data arrival PDN GW of 4G card, PDN GW turns the destination address of downlink data transmission
It is changed to the IP address distributed to 3G/2G card, and downlink data is transmitted to GGSN；
Downlink data is sent to 3G/2G card by S5:GGSN, and 3G/2G card is by the application of downlink data transmission to mobile terminal
Program.
For the double card bilateral mobile phone comprising 4G card and 3G/2G card, generally using 4G card as main card, 3G/2G card is as secondary
Card carries out data transmission service using 4G card, when mobile terminal accessing Internet service, if the data feedback channel of 4G card is good
It is good, and when down going channel failure can not transmit data, it may appear that can not downloading data the case where, so that user is accessed internet
Business is paused, if the down going channel of 4G card can not transmit data, by closing the IMSI of the IMSI and 3G/2G card of 4G card
Connection, establishes unilateral down going channel using 3G/2G card, then send PDN GW for the IP address of 3G/2G, is there is downlink data needs
When being transmitted to mobile terminal, downlink data transmission to GGSN, then is transferred to 3G/2G card by PDN GW, completes downlink data transmission.
It should be noted that mobile terminal of the invention may be the mobile terminal of other more card multi-pass, to 4G card
Quantity is without limitation, can be 2 or more, when certainly including others 5G, the present invention also can be used and carry out letter
Single replacement solves the problems, such as downlink failure to realize.
Further, the mobile terminal further includes communication module, and the communication module is used to send message to MME, and
For the data transmission between 4G card and 3G/2G card.
A special communication module is arranged in mobile terminal between application system and 4G, 3G/2G card, for being application
The IP packet that system is sent is assigned on main card and vice card, and main card and the received IP packet of vice card are sent to application system.
Further, before the mobile terminal sends message to MME further include: adhere to 4G card and 3G/2G card respectively
To 4G card network and 3G/2G card network on.
It for 4G card and 3G/2G card distribution private network IP address is PDN GW and GGSN respectively in attaching process.
As shown in Fig. 2, further, it is described the unilateral connection of downlink is established by 3G/2G card before further include: step 201:
The 4G card real-time monitoring down going channel data transmission situation, when 4G card monitors that down going channel does not receive within a preset time
Data, while when data feedback channel can send data, judge that down going channel breaks down.
4G card can upload data, and after not receiving data within a preset time, judge that failure occurs in down going channel,
Start the solution of starting downlink faulty channel.
Further, double card bilateral mobile terminal includes communication module, establishes the unilateral connection packet of downlink by 3G/2G card
It includes:
Step 202:4G card requires the unilateral connection of 3G/2G card start-up downlink by communication module；
Step 203:3G/2G card issues activation PDP Context request to GGSN, and it is the unilateral company of downlink that connection is specified in request
It connects；
Step 204:GGSN is after 3G/2G card distributes IP address, and the unilateral connection of notice 3G/2G card downlink is established；
Step 205:3G/2G card knows that the unilateral connection of downlink is established to 4G cartoon by communication module, and passes through communication module
The IP address of distribution is sent to and gives 4G card, completes the unilateral connection of downlink.
After down going channel failure occurs in 4G card, the unilateral reception to complete downlink data of downlink is established by 3G/2G card.
Further, the 4G card includes: to PDN GW sending down going channel switching request by MME
Step 206:4G card sends down going channel switching request to MME, after the IMSI and switching in request comprising 4G card
Purpose IP address is the IP address distributed to 3G/2G card；
MME issues down going channel switching request, the IMSI comprising 4G card and the destination IP after switching in request to PDN GW
Address is the IP address distributed to 3G/2G card.
After having the downlink data for being sent to 4G card to reach PDN GW, steps performed 207:PDN GW converts destination address
For the IP address distributed to 3G/2G card, and downlink data is transmitted to GGSN；Downlink data is sent to 3G/2G card by GGSN,
3G/2G card is by the application program of downlink data transmission to mobile terminal
Further, double card bilateral mobile terminal includes communication module, and downlink data is sent to 3G/2G by the GGSN
Card, 3G/2G card will be after the application program of downlink data transmission to mobile terminal further include: application program sends access internet industry
The upstream data of business is transmitted to 4G card to communication module, by communication module；Upstream data is sent to PDN GW by 4G card, by PDN
GW is transmitted to internet.
Embodiment two
On the other hand, as shown in figure 3, same design according to the present invention, it is mobile that the present invention also provides a kind of double card bilaterals
The solution system of user equipment downlink channel failure, comprising: double card bilateral mobile terminal 1, MME2, GGSN3 and PDN GW4, wherein double
The double card of card bilateral mobile terminal includes 4G card and 3G/2G card；
The mobile terminal 1 is used to send message to MME2, and message content includes that the mobile terminal 1 moves for double card bilateral
Dynamic terminal, the type and IMSI of the type of 4G card and IMSI and 3G/2G card；
After the down going channel of 4G card breaks down, when establishing the unilateral connection of downlink by 3G/2G card, the GGSN3 use
In for 3G/2G card distribute IP address；3G/2G card is used to the IP address of distribution being sent to 4G card；
The 4G card is for sending down going channel switching request to MME2；
The MME2 is used to receive the down going channel switching request of 4G card sending and is transmitted to PDN GW4, the request packet
Containing the IP address distributed to 3G/2G card；
After the downlink data for being sent to 4G card reaches PDN GW4, the PDN GW4 is used for the mesh of downlink data transmission
Address conversion be the IP address distributed to 3G/2G card, and downlink data is transmitted to GGSN3；
The GGSN3 is also used to the downlink data that PDN GW4 is forwarded being sent to 3G/2G card；3G/2G card is for by downlink
Data are transferred to the application program of mobile terminal
After there is down going channel failure as the 4G card of double card bilateral main card, 4G card can only be to transmitting data, and nothing
Method receives the mobile data for being sent to 4G card, causes user to cannot achieve data exchanging function, solution system through this embodiment
System, sends 3G/2G card for the data of down going channel, then be transferred to the application program of mobile terminal, the access for completing user is mutual
Networking service.
Further, the mobile terminal 1 further includes communication module, and the communication module is used to send message to MME2,
And for the data transmission between 4G card and 3G/2G card.
Further, 4G card is also used to real-time monitoring down going channel data transmission situation, when monitoring down going channel pre-
If not receiving data in the time, while when data feedback channel can send data, judge that down going channel breaks down.
Further, double card bilateral mobile terminal 1 includes also communication module, establishes the unilateral connection of downlink by 3G/2G card
When, the 3G/2G card is also used to issue activation PDP Context request to GGSN3, and it is the unilateral company of downlink that connection is specified in request
It connects；The communication module is used to send the IP address distributed to 3G/2G card on 4G card, completes the unilateral connection of downlink.
Further, double card bilateral mobile terminal 1 includes also communication module, is sent to downlink data in the GGSN3
3G/2G card, 3G/2G card is by after the application program of downlink data transmission to mobile terminal, and the communication module will be for that will apply journey
The upstream data that sequence sends access Internet service is transmitted to 4G card；The 4G card is also used to upstream data being sent to PDN
GW4, to upload on internet
The solution system of double card bilateral mobile terminal down going channel failure of the invention monitors that down going channel goes out in 4G card
After existing failure, start the unilateral connection of downlink of 3G/2G card immediately, the data of mobile terminal are given by 3G/2G clamping transmitting-receiving, are protected
The continuity that user accesses Internet service is hindered, has kept customer experience more preferable.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of solution of double card bilateral mobile terminal down going channel failure, which is characterized in that the double card bilateral is mobile
The double card of terminal includes 4G card and 3G/2G card, and the solution includes:
Mobile terminal sends message to MME, and message content includes the class that the mobile terminal is double card bilateral mobile terminal, 4G card
The type and IMSI of type and IMSI and 3G/2G card；
After the down going channel of 4G card breaks down, when establishing the unilateral connection of downlink by 3G/2G card, GGSN is that 3G/2G card divides
With IP address, the IP address of distribution is sent to 4G card by 3G/2G card；
4G card issues down going channel switching request to PDNGW by MME, and the request includes the IP address of the distribution；
After being sent to the downlink data arrival PDNGW of 4G card, PDNGW is converted to the destination address of downlink data transmission to 3G/
The IP address of 2G card distribution, and downlink data is transmitted to GGSN；
Downlink data is sent to 3G/2G card by GGSN, and 3G/2G card is by the application program of downlink data transmission to mobile terminal.
2. the solution of double card bilateral mobile terminal down going channel failure according to claim 1, which is characterized in that
Before the mobile terminal sends message to MME further include: be attached to 4G card on the network of 4G card, 3G/2G card is attached to 3G/
On the network of 2G card.
3. the solution of double card bilateral mobile terminal down going channel failure according to claim 1, which is characterized in that
It is described the unilateral connection of downlink is established by 3G/2G card before further include: the 4G card real-time monitoring down going channel data transmission situation,
When 4G card monitors that down going channel does not receive data within a preset time, while data feedback channel can send data, judgement
Down going channel breaks down.
4. the solution of double card bilateral mobile terminal down going channel failure according to claim 1, which is characterized in that double
Card bilateral mobile terminal includes communication module, described to establish the unilateral connection of downlink by 3G/2G card and include:
4G card requires the unilateral connection of 3G/2G card start-up downlink by communication module；
3G/2G card issues activation PDP Context request to GGSN, and it is the unilateral connection of downlink that connection is specified in request；
GGSN is after 3G/2G card distributes IP address, and the unilateral connection of notice 3G/2G card downlink is established；
3G/2G card knows that the unilateral connection of downlink is established to 4G cartoon by communication module, and by the IP of distribution by communication module
Location, which is sent to, gives 4G card, completes the unilateral connection of downlink.
5. the solution of double card bilateral mobile terminal down going channel failure according to claim 1, which is characterized in that institute
4G card is stated by MME includes: to PDNGW sending down going channel switching request
4G card sends down going channel switching request to MME, and the IMSI comprising 4G card and the purpose IP address after switching are in request
The IP address distributed to 3G/2G card；
MME issues down going channel switching request to PDNGW, and the IMSI comprising 4G card and the purpose IP address after switching are in request
The IP address distributed to 3G/2G card.
6. the solution of double card bilateral mobile terminal down going channel failure according to claim 1, which is characterized in that double
Card bilateral mobile terminal includes communication module, and downlink data is sent to 3G/2G card by the GGSN, and 3G/2G card is by downlink data
After being transferred to the application program of mobile terminal further include: the upstream data that application program sends access Internet service gives communication mould
Block is transmitted to 4G card by communication module；Upstream data is sent to PDNGW by 4G card, is transmitted to internet by PDNGW.
7. a kind of solution system of double card bilateral mobile terminal down going channel failure characterized by comprising double card bilateral is mobile
Terminal, GGSN, MME and PDNGW, wherein the double card of double card bilateral mobile terminal includes 4G card and 3G/2G card；
The mobile terminal be used for MME send message, message content include the mobile terminal be double card bilateral mobile terminal,
The type of 4G card and the type and IMSI of IMSI and 3G/2G card；
After the down going channel of 4G card breaks down, when establishing the unilateral connection of downlink by 3G/2G card, the GGSN be used for be
3G/2G card distributes IP address；3G/2G card is used to the IP address of distribution being sent to 4G card；
The 4G card is for sending down going channel switching request to MME；
The MME is used to receive the down going channel switching request of 4G card sending and is transmitted to PDNGW, and the request is given comprising described
The IP address of 3G/2G card distribution；
After the downlink data for being sent to 4G card reaches PDNGW, the PDNGW is used to turn the destination address of downlink data transmission
It is changed to the IP address distributed to 3G/2G card, and downlink data is transmitted to GGSN；
The GGSN is also used to the downlink data that PDNGW is forwarded being sent to 3G/2G card；3G/2G card is for passing downlink data
The defeated application program to mobile terminal.
8. the solution system of double card bilateral mobile terminal down going channel failure according to claim 7, which is characterized in that institute
It states 4G card and is also used to real-time monitoring down going channel data transmission situation, when monitoring that down going channel do not receive within a preset time
Data, while when data feedback channel can send data, judge that down going channel breaks down.
9. the solution system of double card bilateral mobile terminal down going channel failure according to claim 7, which is characterized in that double
Card bilateral mobile terminal also includes communication module, and when establishing the unilateral connection of downlink by 3G/2G card, the 3G/2G card is also used to
Activation PDP Context request is issued to GGSN, it is the unilateral connection of downlink that connection is specified in request；The communication module will be for that will give
The IP address of 3G/2G card distribution is sent to 4G card, completes the unilateral connection of downlink.
10. the solution system of double card bilateral mobile terminal down going channel failure according to claim 7, which is characterized in that
Double card bilateral mobile terminal also includes communication module, and downlink data is sent to 3G/2G card in the GGSN, 3G/2G card will under
After row data are transferred to the application program of mobile terminal, the communication module is used to sending application program into access Internet service
Upstream data be transmitted to 4G card；The 4G card is also used to upstream data being sent to PDNGW, to upload on internet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910446659.2A CN110167014B (en) | 2019-05-27 | 2019-05-27 | Method and system for solving downlink channel fault of dual-card dual-pass mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910446659.2A CN110167014B (en) | 2019-05-27 | 2019-05-27 | Method and system for solving downlink channel fault of dual-card dual-pass mobile terminal |
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| CN110167014A true CN110167014A (en) | 2019-08-23 |
| CN110167014B CN110167014B (en) | 2021-12-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112995986A (en) * | 2021-02-23 | 2021-06-18 | 中国联合网络通信集团有限公司 | Access method of internet service, double-card bi-pass mobile terminal and firewall |
| CN113766484A (en) * | 2021-09-07 | 2021-12-07 | 北京小米移动软件有限公司 | Communication method, communication apparatus, storage medium, and electronic device |
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