CN110167014B - Method and system for solving downlink channel fault of dual-card dual-pass mobile terminal - Google Patents
Method and system for solving downlink channel fault of dual-card dual-pass mobile terminal Download PDFInfo
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- CN110167014B CN110167014B CN201910446659.2A CN201910446659A CN110167014B CN 110167014 B CN110167014 B CN 110167014B CN 201910446659 A CN201910446659 A CN 201910446659A CN 110167014 B CN110167014 B CN 110167014B
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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
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Abstract
The invention provides a method for solving a downlink channel fault of a dual-card dual-pass mobile terminal, which comprises the following steps: the mobile terminal sends a message to the MME, wherein the message indicates the types and IMSI of the dual-card dual-call terminal, the 4G card and the 3G/2G card; establishing downlink single-side connection through the 3G/2G card, and allocating an IP address for the 3G/2G card by the GGSN and sending the IP address to the 4G card; then the 4G card sends a downlink channel switching request to the PDN GW; after the downlink data reaches the PDN GW, the PDN GW converts the destination address into the IP address of the 3G/2G card, forwards the downlink data to the GGSN, and then sends the downlink data to the 3G/2G card by the GGSN. The invention also provides a corresponding solution system. The solution and the system of the invention solve the problem that the data receiving can not be completed when the downlink channel of the 4G card fails, ensure the continuity of the user accessing the internet service and improve the experience of the user using the mobile terminal.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a system for solving a downlink channel fault of a dual-card dual-pass mobile terminal.
Background
At present, the popular configuration of the mobile terminal is dual-card dual-standby. The dual card refers to a mobile terminal having two card slots, and capable of mounting two USIM (Universal Subscriber Identity Module)/SIM (Subscriber Identity Module) cards, each USIM/SIM card may support one or more network systems, and the two USIM/SIM cards may belong to the same operator or may belong to different operators. The dual standby function means that when two USIM/SIM cards support different network systems, the mobile terminal supports the two USIM/SIM cards to register successfully on two networks respectively, and simultaneously stands by; when the two USIM/SIM cards support the same network system, the mobile terminal supports the two USIM/SIM cards to successfully register on the same network and simultaneously stand by.
The dual-card dual-standby mobile terminal is a dual-card dual-pass mobile terminal, the dual-card dual-pass mobile terminal can simultaneously connect signals from two communication networks, for the dual-card dual-pass mobile terminal, when one card is a 4G card and the other card is a 3G/2G card, the 4G card is generally selected as a main card to bear the dual-card dual-pass mobile terminal to access the internet service, and certainly, the auxiliary card bearing service can be selected manually, but at present, the main card or the auxiliary card bearing service cannot be actively selected according to the current network condition of the main card, the network condition of the auxiliary card and the accessed internet service condition. When a mobile terminal accesses internet services through a main card, if a downlink channel of the main card fails, such as an eNodeB (evolved Node B), the downlink channel is blocked and cannot transmit data, and the uplink channel is good, the situation that the uplink channel is idle and the downlink channel cannot transmit data occurs, so that a user stops accessing the internet services, user experience is poor, and the problem that the prior art cannot well solve the problem.
Disclosure of Invention
The invention is completed in order to at least partially solve the technical problem that the 4G card has downlink channel failure which cannot be solved in the prior art.
The technical scheme adopted for solving the technical problem of the invention is as follows: the invention provides a method for solving a downlink channel fault of a dual-card dual-pass mobile terminal, wherein dual cards of the dual-card dual-pass mobile terminal comprise a 4G card and a 3G/2G card, and the method comprises the following steps:
the method comprises the steps that a Mobile terminal sends a message to an MME (Mobility Management Entity), wherein the message content comprises the type and IMSI (International Mobile Subscriber Identity) of the Mobile terminal which is a dual-card dual-active Mobile terminal and a 4G card, and the type and IMSI of a 3G/2G card;
when a downlink single-side connection is established through a 3G/2G card after a downlink channel of the 4G card has a fault, a GGSN (Gateway General Packet Radio Service Support Node) allocates an IP address for the 3G/2G card, and the 3G/2G card sends the allocated IP address to the 4G card;
the 4G card sends a downlink channel switching request to a PDN GW (Packet data network-Gate Way) through an MME, wherein the request comprises the allocated IP address;
after the downlink data sent to the 4G card reaches the PDN GW, the PDN GW converts the destination address of downlink data transmission into an IP address distributed to the 3G/2G card and forwards the downlink data to the GGSN;
the GGSN sends the downlink data to the 3G/2G card, and the 3G/2G card transmits the downlink data to an application program of the mobile terminal.
Further, before the mobile terminal sends a message to an MME, the method further includes: and attaching the 4G card to the network of the 4G card, and attaching the 3G/2G card to the network of the 3G/2G card.
Further, before the establishing of the downlink single-side connection through the 3G/2G card, the method further includes: the 4G card monitors the data transmission condition of the downlink channel in real time, and when the 4G card monitors that the downlink channel does not receive data within the preset time and the uplink channel can send data, the 4G card judges that the downlink channel breaks down.
Further, the dual-card dual-pass mobile terminal includes a communication module, the establishment of the downlink single-side connection through the 3G/2G card includes:
the 4G card requires the 3G/2G card to start downlink unilateral connection through the communication module;
the 3G/2G card sends a request for activating the PDP context to GGSN, and the connection is specified to be downlink unilateral connection in the request;
after the GGSN distributes IP address for the 3G/2G card, the GGSN informs the 3G/2G card to establish downlink unilateral connection;
the 3G/2G card informs the 4G card of the establishment of the downlink unilateral connection through the communication module, and sends the distributed IP address to the 4G card through the communication module to complete the downlink unilateral connection.
Further, the sending, by the 4G card, the downlink channel switching request to the PDN GW through the MME includes:
the 4G card sends a downlink channel switching request to the MME, wherein the request comprises the IMSI of the 4G card and the switched target IP address which is the IP address allocated to the 3G/2G card;
and the MME sends a downlink channel switching request to the PDN GW, wherein the request comprises the IMSI of the 4G card and the switched target IP address which is the IP address allocated to the 3G/2G card.
Further, the dual-card bi-pass mobile terminal includes a communication module, the GGSN sends the downlink data to the 3G/2G card, and the 3G/2G card further transmits the downlink data to an application program of the mobile terminal, and then includes: the application program sends uplink data for accessing the internet service to the communication module, and the uplink data is forwarded to the 4G card by the communication module; and the 4G card sends the uplink data to the PDN GW, and the PDN GW forwards the uplink data to the Internet.
On the other hand, the invention also provides a system for solving the downlink channel fault of the dual-card dual-pass mobile terminal, which comprises the following steps: the system comprises a dual-card bi-pass mobile terminal, a GGSN, an MME and a PDN GW, wherein the dual cards of the dual-card bi-pass mobile terminal comprise a 4G card and a 3G/2G card;
the mobile terminal is used for sending a message to the MME, and the message content comprises the mobile terminal which is a dual-card dual-call mobile terminal, the type and IMSI of a 4G card, and the type and IMSI of a 3G/2G card;
when the downlink channel of the 4G card has a fault and downlink single-side connection is established through the 3G/2G card, the GGSN is used for distributing an IP address for the 3G/2G card; the 3G/2G card is used for sending the allocated IP address to the 4G card;
the 4G card is used for sending a downlink channel switching request to the MME;
the MME is used for receiving a downlink channel switching request sent by a 4G card and forwarding the downlink channel switching request to a PDN GW, wherein the request comprises the IP address allocated to the 3G/2G card;
after downlink data sent to the 4G card reaches the PDN GW, the PDN GW is used for converting a destination address of downlink data transmission into an IP address distributed to the 3G/2G card and forwarding the downlink data to the GGSN;
the GGSN is also used for sending the downlink data forwarded by the PDN GW to the 3G/2G card; the 3G/2G card is used for transmitting downlink data to an application program of the mobile terminal.
Further, the 4G card is further configured to monitor a data transmission condition of the downlink channel in real time, and when it is monitored that the downlink channel does not receive data within a preset time and the uplink channel can send data, determine that the downlink channel fails.
Further, the dual-card dual-pass mobile terminal comprises a communication module, when the downlink single-side connection is established through the 3G/2G card, the 3G/2G card is also used for sending a request for activating the PDP context to the GGSN, and the connection is specified to be the downlink single-side connection in the request; and the communication module is used for sending the IP address distributed to the 3G/2G card to the 4G card to complete the downlink unilateral connection.
Furthermore, the dual-card bi-pass mobile terminal comprises a communication module, wherein after the GGSN sends downlink data to the 3G/2G card, and the 3G/2G card transmits the downlink data to an application program of the mobile terminal, the communication module is used for forwarding uplink data sent by the application program to access the internet service to the 4G card; and the 4G card is also used for sending uplink data to the PDN GW for uploading to the Internet.
Has the advantages that:
according to the method and the system for solving the downlink channel fault of the dual-card dual-pass mobile terminal, when the downlink channel of the 4G card has the fault, the 3G/2G card is used for establishing downlink single-side connection, the GGSN is allocated to the IP address of the 3G/2G card and is sent to the PDN GW, through downlink channel switching, when the downlink data is sent to the PDN GW, the destination address is changed into the IP address allocated to the 3G/2G card, so that the downlink data is sent to the mobile phone terminal through the GGSN, the problem that data receiving cannot be completed when the downlink channel of the 4G card has the fault is solved, and the experience of a user using the mobile terminal is improved.
Drawings
Fig. 1 is a flowchart of a method for solving a downlink channel fault of a dual-card dual-pass mobile terminal according to a first embodiment of the present invention;
fig. 2 is a flow chart of downlink single-sided connection establishment and downlink channel switching according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a downlink channel failure solution system of a dual-card dual-pass mobile terminal according to a second embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1, the present invention provides a method for solving a downlink channel failure of a dual-card dual-pass mobile terminal, where dual cards of the dual-card dual-pass mobile terminal include a 4G card and a 3G/2G card, and the method includes:
s1: the mobile terminal sends a message to the MME, wherein the message content comprises the mobile terminal which is a dual-card dual-call mobile terminal, the type and IMSI of a 4G card, and the type and IMSI of a 3G/2G card;
s2: when a downlink single-side connection is established through a 3G/2G card after a downlink channel of a 4G card has a fault, a GGSN allocates an IP address for the 3G/2G card, and the 3G/2G card sends the allocated IP address to the 4G card;
s3: the 4G card sends a downlink channel switching request to the PDN GW through the MME, wherein the request comprises the allocated IP address;
s4: after the downlink data sent to the 4G card reaches the PDN GW, the PDN GW converts the destination address of downlink data transmission into an IP address distributed to the 3G/2G card and forwards the downlink data to the GGSN;
s5: the GGSN sends the downlink data to the 3G/2G card, and the 3G/2G card transmits the downlink data to an application program of the mobile terminal.
For a dual-card dual-pass mobile phone containing a 4G card and a 3G/2G card, the 4G card is generally used as a main card, the 3G/2G card is used as an auxiliary card, the 4G card is used for data transmission service, when a mobile terminal accesses internet service, if the uplink channel of the 4G card is good and the downlink channel fails to transmit data, the situation that the data cannot be downloaded occurs, so that the user is stopped accessing the internet service, if the downlink channel of the 4G card can not transmit data, the 3G/2G card is utilized to establish a unilateral downlink channel by associating the IMSI of the 4G card with the IMSI of the 3G/2G card, then the IP address of the 3G/2G card is sent to the PDN GW, and when downlink data need to be transmitted to the mobile terminal, the PDN GW transmits the downlink data to the GGSN and then transmits the downlink data to the 3G/2G card to finish the transmission of the downlink data.
It should be noted that the mobile terminal of the present invention may also be other multi-card multi-pass mobile terminals, the number of 4G cards is not limited to this, and may be 2 or more cards, and when other 5G cards are included, the problem of downlink failure may also be solved by using the present invention to perform simple replacement.
Further, the mobile terminal further comprises a communication module, and the communication module is configured to send a message to the MME and is configured to transmit data between the 4G card and the 3G/2G card.
The mobile terminal sets a special communication module between the application system and the 4G and 3G/2G cards, which is used to distribute the IP packets sent by the application system to the main card and the auxiliary card, and send the IP packets received by the main card and the auxiliary card to the application system.
Further, before the mobile terminal sends a message to an MME, the method further includes: and respectively attaching the 4G card and the 3G/2G card to a network of the 4G card and a network of the 3G/2G card.
In the attaching process, PDN GW and GGSN are respectively used for allocating private network IP addresses for the 4G card and the 3G/2G card.
As shown in fig. 2, further, before the establishing the downlink single-sided connection through the 3G/2G card, the method further includes: step 201: the 4G card monitors the data transmission condition of the downlink channel in real time, and when the 4G card monitors that the downlink channel does not receive data within the preset time and the uplink channel can send data, the 4G card judges that the downlink channel breaks down.
The 4G card can upload data, and after the data is not received within the preset time, the downlink channel is judged to have a fault, and the solution of the downlink fault channel is started.
Further, the dual-card dual-pass mobile terminal comprises a communication module, and establishing downlink single-side connection through the 3G/2G card comprises:
step 202: the 4G card requires the 3G/2G card to start downlink unilateral connection through the communication module;
step 203: the 3G/2G card sends a request for activating the PDP context to GGSN, and the connection is specified to be downlink unilateral connection in the request;
step 204: after the GGSN distributes IP address for the 3G/2G card, the GGSN informs the 3G/2G card to establish downlink unilateral connection;
step 205: the 3G/2G card informs the 4G card of the establishment of the downlink unilateral connection through the communication module, and sends the distributed IP address to the 4G card through the communication module to complete the downlink unilateral connection.
And after the 4G card has a downlink channel fault, establishing a downlink single side through the 3G/2G card to complete the reception of downlink data.
Further, the sending, by the 4G card, the downlink channel switching request to the PDN GW through the MME includes:
step 206: the 4G card sends a downlink channel switching request to the MME, wherein the request comprises the IMSI of the 4G card and the switched target IP address which is the IP address allocated to the 3G/2G card;
and the MME sends a downlink channel switching request to the PDN GW, wherein the request comprises the IMSI of the 4G card and the switched target IP address which is the IP address allocated to the 3G/2G card.
When the downlink data sent to the 4G card reaches the PDN GW, step 207 is executed: PDN GW converts the destination address into an IP address distributed to the 3G/2G card and forwards the downlink data to GGSN; GGSN sends the downlink data to 3G/2G card, and 3G/2G card transmits the downlink data to the application program of mobile terminal
Further, the dual-card bi-pass mobile terminal includes a communication module, the GGSN sends the downlink data to the 3G/2G card, and the 3G/2G card further transmits the downlink data to an application program of the mobile terminal, and then includes: the application program sends uplink data for accessing the internet service to the communication module, and the uplink data is forwarded to the 4G card by the communication module; and the 4G card sends the uplink data to the PDN GW, and the PDN GW forwards the uplink data to the Internet.
Example two
On the other hand, as shown in fig. 3, according to the same concept of the present invention, the present invention further provides a system for solving a downlink channel failure of a dual-card dual-pass mobile terminal, including: the dual-card dual-call mobile terminal comprises a dual-card dual-call mobile terminal 1, an MME2, a GGSN3 and a PDN GW4, wherein the dual cards of the dual-card dual-call mobile terminal comprise a 4G card and a 3G/2G card;
the mobile terminal 1 is configured to send a message to the MME2, where the message content includes that the mobile terminal 1 is a dual-card dual-active mobile terminal, the type and IMSI of a 4G card, and the type and IMSI of a 3G/2G card;
when a downlink single-side connection is established through a 3G/2G card after a downlink channel of a 4G card fails, the GGSN3 is used for allocating an IP address to the 3G/2G card; the 3G/2G card is used for sending the allocated IP address to the 4G card;
the 4G card is used for sending a downlink channel switching request to the MME 2;
the MME2 is used for receiving a downlink channel switching request sent by a 4G card and forwarding the downlink channel switching request to a PDN GW4, wherein the request comprises the IP address allocated to the 3G/2G card;
after the downlink data sent to the 4G card reaches the PDN GW4, the PDN GW4 is configured to convert the destination address of the downlink data transmission into an IP address allocated to the 3G/2G card, and forward the downlink data to the GGSN 3;
the GGSN3 is further configured to send the downlink data forwarded by the PDN GW4 to the 3G/2G card; application program of 3G/2G card for transmitting downlink data to mobile terminal
After a downlink channel fault occurs in the 4G card serving as the dual-card dual-pass main card, the 4G card can only transmit data upwards, but cannot receive and transmit mobile data sent to the 4G card, so that a user cannot realize a data exchange function.
Further, the mobile terminal 1 further includes a communication module, and the communication module is configured to send a message to the MME2, and is configured to transmit data between the 4G card and the 3G/2G card.
Further, the 4G card is further configured to monitor a data transmission condition of the downlink channel in real time, and when it is monitored that the downlink channel does not receive data within a preset time and the uplink channel can send data, it is determined that the downlink channel fails.
Further, the dual-card dual-pass mobile terminal 1 further comprises a communication module, when a downlink single-side connection is established through the 3G/2G card, the 3G/2G card is further configured to send a request for activating a PDP context to the GGSN3, where the connection is specified as the downlink single-side connection in the request; and the communication module is used for sending the IP address distributed to the 3G/2G card to the 4G card to complete the downlink unilateral connection.
Further, the dual-card bi-pass mobile terminal 1 further comprises a communication module, wherein after the GGSN3 sends downlink data to the 3G/2G card, and the 3G/2G card transmits the downlink data to an application program of the mobile terminal, the communication module is configured to forward uplink data sent by the application program to access the internet service to the 4G card; the 4G card is also used for sending uplink data to a PDN GW4 to be uploaded to the Internet
The system for solving the downlink channel fault of the dual-card dual-pass mobile terminal immediately starts the downlink single-side connection of the 3G/2G card after the 4G card monitors that the downlink channel has the fault, and receives and transmits data sent to the mobile terminal through the 3G/2G card, so that the continuity of the user accessing the internet service is ensured, and the user experience is better.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. The utility model provides a solution of two-card bi-pass mobile terminal downstream channel trouble which characterized in that, two cards of two-card bi-pass mobile terminal include 4G card and 3G/2G card, two-card bi-pass mobile terminal contains communication module, the solution includes:
the mobile terminal sends a message to the MME, wherein the message content comprises the mobile terminal which is a dual-card dual-call mobile terminal, the type and IMSI of a 4G card, and the type and IMSI of a 3G/2G card;
after a downlink channel of the 4G card fails, the 4G card requires the 3G/2G card to start downlink single-side connection through the communication module;
the 3G/2G card sends a request for activating the PDP context to GGSN, and the connection is specified to be downlink unilateral connection in the request;
the GGSN allocates an IP address for the 3G/2G card based on the request, and then informs the 3G/2G card of the establishment of downlink unilateral connection;
the 3G/2G card informs the 4G card of the establishment of the downlink unilateral connection through the communication module, and sends the IP address distributed for the 3G/2G card by the GGSN to the 4G card through the communication module to complete the downlink unilateral connection;
the 4G card sends a downlink channel switching request to the PDN GW through the MME, wherein the downlink channel switching request comprises the allocated IP address;
after the downlink data sent to the 4G card reaches the PDN GW, the PDN GW converts the destination address of downlink data transmission into the allocated IP address and forwards the downlink data to the GGSN;
the GGSN sends the downlink data to the 3G/2G card, and the 3G/2G card transmits the downlink data to an application program of the mobile terminal.
2. The method for solving the downlink channel fault of the dual-card dual-pass mobile terminal according to claim 1, further comprising, before the mobile terminal sends the message to the MME: the 4G card is attached to a network of 4G cards, and the 3G/2G card is attached to a network of 3G/2G cards.
3. The method for solving the downlink channel fault of the dual-card dual-pass mobile terminal according to claim 1, wherein before the 4G card requires the 3G/2G card to start the downlink single-side connection through the communication module, the method further comprises: the 4G card monitors the data transmission condition of the downlink channel in real time, and when the 4G card monitors that the downlink channel does not receive data within the preset time and the uplink channel can send data, the 4G card judges that the downlink channel breaks down.
4. The method for solving the downlink channel failure of the dual-card dual-pass mobile terminal according to claim 1, wherein the sending, by the 4G card, the downlink channel switching request to the PDN GW through the MME comprises:
the 4G card sends a downlink channel switching request to the MME, wherein the request comprises the IMSI of the 4G card and the switched target IP address which is the IP address distributed to the 3G/2G card by the GGSN;
and the MME sends a downlink channel switching request to the PDN GW, wherein the request comprises the IMSI of the 4G card and the switched target IP address which is the IP address distributed to the 3G/2G card by the GGSN.
5. The method for solving the downlink channel fault of the dual-card dual-pass mobile terminal according to claim 1, wherein the GGSN sends the downlink data to the 3G/2G card, and the 3G/2G card transmits the downlink data to the application program of the mobile terminal, and further comprising: the application program sends uplink data for accessing the internet service to the communication module, and the uplink data is forwarded to the 4G card by the communication module; and the 4G card sends the uplink data to the PDN GW, and the PDN GW forwards the uplink data to the Internet.
6. The utility model provides a solution system of two calorie of bi-pass mobile terminal downlink channel trouble which characterized in that includes: the system comprises a dual-card bi-pass mobile terminal, a GGSN, an MME and a PDN GW, wherein the dual cards of the dual-card bi-pass mobile terminal comprise a 4G card and a 3G/2G card, and the dual-card bi-pass mobile terminal comprises a communication module;
the mobile terminal is used for sending a message to the MME, and the message content comprises the mobile terminal which is a dual-card dual-call mobile terminal, the type and IMSI of a 4G card, and the type and IMSI of a 3G/2G card;
after a downlink channel of the 4G card fails, the 4G card is used for requiring the 3G/2G card to start downlink single-side connection through the communication module;
the 3G/2G card is used for sending a request for activating the PDP context to the GGSN, and the connection is specified to be downlink unilateral connection in the request;
the GGSN is used for allocating an IP address for the 3G/2G card based on the request and then informing the 3G/2G card of establishing the downlink unilateral connection;
the 3G/2G card is also used for informing the 4G card of the establishment of the downlink unilateral connection through the communication module, and sending the IP address distributed for the 3G/2G card by the GGSN to the 4G card through the communication module to finish the downlink unilateral connection;
the 4G card is also used for sending a downlink channel switching request to the MME;
the MME is used for receiving a downlink channel switching request sent by a 4G card and forwarding the downlink channel switching request to a PDN GW, wherein the request comprises an IP address distributed to a 3G/2G card;
after downlink data sent to the 4G card reaches the PDN GW, the PDN GW is used for converting a destination address of downlink data transmission into an IP address distributed to the 3G/2G card and forwarding the downlink data to the GGSN;
the GGSN is also used for sending the downlink data forwarded by the PDN GW to the 3G/2G card; the 3G/2G card is also used for transmitting the downlink data to an application program of the mobile terminal.
7. The system according to claim 6, wherein the 4G card is further configured to monitor a data transmission condition of the downlink channel in real time, and determine that the downlink channel is faulty when it is monitored that the downlink channel does not receive data within a preset time period and the uplink channel can transmit data.
8. The system for solving downlink channel faults of a dual-card dual-pass mobile terminal according to claim 6, wherein after the GGSN sends downlink data to the 3G/2G card, and the 3G/2G card transmits the downlink data to an application program of the mobile terminal, the communication module is used for forwarding uplink data sent by the application program to access the Internet service to the 4G card;
and the 4G card is also used for sending uplink data to the PDN GW for uploading to the Internet.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110167014A CN110167014A (en) | 2019-08-23 |
| CN110167014B true CN110167014B (en) | 2021-12-10 |
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| US20110143756A1 (en) * | 2002-10-18 | 2011-06-16 | Gallagher Michael D | Method and system for registering an unlicensed mobile access subscriber with a network controller |
| EP2512184B1 (en) * | 2011-04-13 | 2017-07-19 | OCT Circuit Technologies International Limited | Process and apparatus for handling downlink transmission during network switching |
| WO2013163814A1 (en) * | 2012-05-04 | 2013-11-07 | Nokia Corporation | Recovering connection in lte local area network for eps and local services |
| CN102917326B (en) * | 2012-10-15 | 2016-03-30 | 华为终端有限公司 | The communication means of double card bilateral terminal, device and double card bilateral terminal |
| CN103747493B (en) * | 2014-01-27 | 2017-03-08 | 中国联合网络通信集团有限公司 | Data service handling method, terminal, base station and mobile management entity |
| CN106465134B (en) * | 2014-05-28 | 2020-01-21 | 瑞典爱立信有限公司 | Terminal dual SIM-dual access handling |
| CN105375948A (en) * | 2015-12-14 | 2016-03-02 | 北京纳衡仪器仪表有限公司 | Multimode wireless communication device |
| CN109495884A (en) * | 2017-09-12 | 2019-03-19 | 上海产业技术研究院 | A kind of the network switching circuit and switching method of multimode multi-frequency |
| CN108990122B (en) * | 2018-08-30 | 2021-02-02 | 中国联合网络通信集团有限公司 | Call switching method and system |
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