Solution and system for downlink channel failure of dual-card dual-pass mobile terminal
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A mobile terminal, dual-card dual-pass technology, applied in the field of communication, can solve the problem of 4G card downlink channel failure, inability to solve and other problems, to achieve the effect of improving experience
Active Publication Date: 2021-12-10
CHINA UNITED NETWORK COMM GRP CO LTD
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[0004] The present invention has been completed in order to at least partially solve the technical problems that cannot be solved in the downlink channel failure of the 4G card existing in the prior art
Method used
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Embodiment 1
[0039] like figure 1 As shown, the present invention provides a solution to the downlink channel failure of a dual-card dual-pass mobile terminal. The dual-card of the dual-card dual-pass mobile terminal includes a 4G card and a 3G / 2G card. The solution includes:
[0040] S1: The mobile terminal sends a message to the MME, and the content of the message includes that the mobile terminal is a dual-card dual-pass mobile terminal, the type and IMSI of the 4G card, and the type and IMSI of the 3G / 2G card;
[0041]S2: After the downlink channel of the 4G card fails, when a downlink unilateral connection is established through the 3G / 2G card, the GGSN assigns an IP address to the 3G / 2G card, and the 3G / 2G card sends the assigned IP address to the 4G card;
[0042] S3: The 4G card sends a downlink channel switching request to the PDN GW through the MME, and the request includes the allocated IP address;
[0043] S4: After the downlink data sent to the 4G card reaches the PDN GW, the...
Embodiment 2
[0065] On the other hand, if image 3 As shown, according to the same idea of the present invention, the present invention also provides a dual-card dual-pass mobile terminal downlink failure solution system, including: dual-card dual-pass mobile terminal 1, MME2, GGSN3 and PDN GW4, wherein dual-card dual-pass The dual cards of the mobile terminal include 4G card and 3G / 2G card;
[0066] The mobile terminal 1 is used to send a message to the MME2, and the message content includes that the mobile terminal 1 is a dual-card dual-pass mobile terminal, the type and IMSI of the 4G card, and the type and IMSI of the 3G / 2G card;
[0067] After the downlink channel of the 4G card fails, when a downlink unilateral connection is established through the 3G / 2G card, the GGSN3 is used to assign an IP address to the 3G / 2G card; the 3G / 2G card is used to send the assigned IP address to the 4G Card;
[0068] The 4G card is used to send a downlink channel switching request to MME2;
[0069...
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Abstract
The present invention provides a method for solving downlink channel failure of a dual-card dual-pass mobile terminal. The solution includes: the mobile terminal sends a message to the MME indicating that it is a dual-card dual-pass terminal, the type of the 4G card and the 3G / 2G card, and the IMSI; Then establish a downlink unilateral connection through the 3G / 2G card, and the GGSN assigns an IP address to the 3G / 2G card and sends it to the 4G card; then the 4G card sends a downlink channel switching request to the PDN GW; when the downlink data arrives at the PDN GW, the PDN GW Convert the destination address to the IP address of the 3G / 2G card, and forward the downlink data to the GGSN, and then the GGSN sends it to the 3G / 2G card. The invention also provides a corresponding solution system. The solution method and system described in the present invention solve the problem that the data reception cannot be completed when the downlink channel of the 4G card fails, ensures the continuity of the user's access to Internet services, and improves the user's experience of using the mobile terminal.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a method for solving downlink channel failures of a dual-card dual-pass mobile terminal, and a system for solving downlink channel failures of a dual-card dual-pass mobile terminal. Background technique [0002] At present, a relatively popular configuration of mobile terminals is dual-card dual-standby. Dual card means that there are two card slots on the mobile terminal, which can install two USIM (Universal Subscriber Identity Module, Global Subscriber Identity Module) / SIM (Subscriber Identity Module, Subscriber Identity Module) cards, each USIM / SIM card It can support one or more network standards, and two USIM / SIM cards can belong to the same operator, or they can belong to different operators. The dual standby function means that when the two USIM / SIM cards support different network standards, the mobile terminal supports two USIM / SIM cards that are successfully reg...
Claims
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Application Information
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