CN105792319B

CN105792319B - A kind of the access module switching method and relevant device of multimode double-terminal

Info

Publication number: CN105792319B
Application number: CN201410818580.5A
Authority: CN
Inventors: 董文佳
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2014-12-24
Filing date: 2014-12-24
Publication date: 2019-11-05
Anticipated expiration: 2034-12-24
Also published as: CN105792319A

Abstract

The invention discloses a kind of access module switching method of multimode double-terminal and relevant devices, if it is determined that main card can not normal use, vice card is in available mode and vice card supports other at least one access modules in addition to the access module that secondary access is supported, it can then indicate that primary path carries out the web search of setting access module according to the PLMN frequency point list of pre-stored carrier network relevant to vice card, and when determination searches available setting access module cell, instruction primary path is linked into network corresponding to the setting access module cell searched, the setting access module refers to the access module that secondary access is not supported but vice card is supported, i.e., user can carry out corresponding business transmission using one or more wireless access technologys that vice card is supported by primary path, the access module no longer supported by secondary access Limitation improve the flexibility of terminal usage mode to extend the actual access capability of vice card.

Description

Access mode switching method of multimode dual-card terminal and related equipment

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to an access mode switching method for a multimode dual-card terminal and a related device.

Background

LTE (Long Term Evolution ) is a subsequent Evolution technology of 3G (3rd Generation, third Generation mobile communication), and has become a new Generation broadband mobile communication standard mainstream internationally due to its unique technical advantages of high data rate, low delay, optimized network architecture, larger carrier bandwidth, and the like. In the initial development stage of LTE, an LTE network cannot achieve full coverage, and meanwhile, because the LTE network is based on an all-IP (Internet Protocol) architecture and can only provide VoIP (Voice over Internet Protocol, i.e., Voice transmission based on an IP Protocol) services based on a packet switched domain, the LTE terminal generally adopts a multimode form and needs to use 3G and 2G networks to carry corresponding services. Meanwhile, in the current mobile communication market, because more and more users own multiple USIM (Universal Subscriber Identity Module) cards and/or SIM cards (Subscriber Identity Module) of multiple operators to meet the use requirements of different aspects based on the considerations of services, traffic, charges, personal communications, business uses, and the like, the LTE multimode dual-card terminal has become one of the main terminal types in the mobile communication market.

Specifically, the LTE multimode dual-card terminal needs to be provided with two card slots, each of which can support the insertion of a USIM card or a SIM card, and can support multiple same or different radio access technologies to stand by simultaneously and can support multiple same or different radio access technologies to communicate simultaneously or perform communications in a time-sharing manner. Specifically, the Radio Access technology (also referred to as Access mode or Access standard) supported by the LTE multimode dual-card terminal may include TD-LTE (Time Division Long term Evolution)/LTE FDD (frequency Division duplex Long term Evolution)/WCDMA (HSPA) (WCDMA, Wideband Code Division Multiple Access, HSPA, High Speed uplink Packet Access), TD-SCDMA (TD-HSPA) (TD-SCDMA, Time Division-Synchronous Code Division Multiple Access)/GSM (GPRS/EDGE) (GSM, Global System for Mobile communications, GPRS, General Packet Service, General Packet Radio Service, EDGE, Enhanced data for GSM Evolution); the two user cards (USIM card and/or SIM card) used can belong to the same operator, or belong to different operators at home or abroad, and can respectively support one or more access technologies. In addition, in an actual network, the specific accessible network type of the LTE multimode dual-card terminal is generally determined by the terminal capability, the radio access technology supported by the USIM card and/or the SIM card, the local network operation condition, the operation policy, and the like.

Currently, in the mobile communication market, according to the use requirement of the user, the implementation of terminal hardware, the cost, the consideration of the policy customized by the operator, and the like, the most common LTE multimode dual-card terminal distinguishes a main channel and an auxiliary channel, and allocates two user cards as the main card and the auxiliary card (or card 1, card 2, and the like) for distinguishing the access capability and the service function of the two cards, and the like. The main path of the multimode dual-card terminal may generally include necessary devices such as a 4G/3G/2G baseband chip (i.e., a multimode processing module of the main path), a radio frequency chip, and a radio frequency front end, and the supportable radio access technologies may include TD-LTE/LTE FDD/wcdma (HSPA)/TD-SCDMA (TD-HSPA)/GSM (GPRS/EDGE); the secondary path usually only includes necessary devices such as a 2G baseband chip (or a 3G/2G baseband chip) (i.e., a multimode processing module of the secondary path), an rf chip, and an rf front end, and can support one or two access technologies with smaller bandwidth (e.g., GSM or WCDMA/GSM). In addition, the setting of the main card and the auxiliary card of the multimode dual-card terminal can be realized by the multimode dual-card terminal automatically adapting according to the information such as the type of the user card, the operator to which the user card belongs, the current geographic position and the like, or by fixing the corresponding relation between the card slot and the main card and the auxiliary card and the like.

Further, for such a common LTE multimode dual-card terminal, it is generally supported that the primary card accesses the primary channel to implement service communication using multiple access technologies, and the secondary card accesses the network through the secondary channel to implement the most basic communication function, for example, standby in a 2G network or standby in a 3G/2G network. In addition, according to the implementation mode of the terminal, the main channel of the common LTE multimode dual-card terminal may adopt a single standby mode or a multimode dual-standby mode. The single standby mode may be a CSFB (Circuit Switch Fall Back), that is, the main card preferentially resides in an LTE (e.g., TD-LTE/LTE FDD) network, when there is a voice service requirement, the network may drop the terminal Back to a 3G (e.g., TD-SCDMA/WCDMA) or 2G (e.g., GSM) network through a redirection or switching mechanism or the like to provide the voice service, and after the voice service is finished, the terminal may return to the LTE network from the 3G or 2G network based on multiple mechanisms. In addition, the adopted multimode dual standby mode can mean that the main card can simultaneously stand by and work under two networks of LTE and 3G/2G, or simultaneously stand by and work under two networks of LTE/3G and 2G.

Specifically, in the prior art, if one user card of the multimode dual-card terminal is limited in use due to poor signal quality or traffic reaching a preset threshold, the terminal may be switched to another user card for corresponding service transmission. However, for the above common multimode dual-card terminal, since the secondary path is usually designed only to meet the basic communication requirement, and the access mode with smaller bandwidth is supported, and the network can only be accessed through 2G or 3G/2G, when the main card has poor signal quality or is limited in use by traffic, tariff, and other situations, even if the secondary card can support multiple access modes (such as 4G/3G/2G), due to the limitation of the terminal, the user can only use the 2G or 3G/2G access network of the secondary card, which results in lower achievable transmission rate, poorer flexibility of use, and serious influence on the user experience.

In addition, when the main card has poor signal quality or limited use such as flow and charge, if the 2G network signal of the auxiliary card is weak or there is no GSM network signal locally, the multimode dual-card terminal in which the auxiliary channel can only use 2G will not be used, which further reduces the flexibility of use of the terminal and further reduces the user experience.

Disclosure of Invention

The embodiment of the invention provides an access mode switching method of a multimode dual-card terminal and related equipment, which are used for solving the problems that the existing multimode dual-card terminal with an auxiliary channel only supporting access to a network through 2G or 3G/2G has poor use flexibility and the like.

The embodiment of the invention provides an access mode switching method of a multimode dual-card terminal, which comprises the following steps:

if it is determined that a main card of a multi-mode dual-card terminal cannot be normally used and it is determined that a secondary card of the multi-mode dual-card terminal is in an available state and the secondary card supports at least one other access mode except an access mode supported by a secondary access of the multi-mode dual-card terminal, indicating a main access of the multi-mode dual-card terminal to perform Network search for setting an access mode according to a Public Land Mobile Network (PLMN) frequency point list of an operator Network related to the secondary card, which is pre-stored in the secondary card or the multi-mode dual-card terminal; the set access mode refers to an access mode which is not supported by the auxiliary access but supported by the auxiliary card;

and if the main access is determined to search the available set access mode cell, indicating the main access to the network corresponding to the searched set access mode cell.

Further, after determining that the main path searches for an available cell with a set access mode, the method further comprises:

informing the terminal user corresponding to the multimode dual-card terminal of the information of the searched available cell with the set access mode, and receiving the indication information fed back by the terminal user whether the auxiliary card is allowed to be used for accessing the searched network corresponding to the cell with the set access mode;

instructing the main access to the network corresponding to the searched cell with the set access mode, wherein the method comprises the following steps:

and if receiving the indication information fed back by the terminal user and allowing the secondary card to be used for accessing the searched network corresponding to the set access mode cell, indicating the main channel to be accessed to the searched network corresponding to the set access mode cell.

Further, after instructing the main access to the network corresponding to the searched cell with the set access mode, the method further includes:

instructing the secondary path to detach from the network on which it resides.

Further, after the main channel is indicated to perform a search for setting an access mode network according to a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored by the secondary card or the multi-mode dual-card terminal, the method further includes:

if the fact that the main access does not search an available cell with a set access mode is determined, the main access is indicated to conduct network search according to a preset period and a PLMN frequency point list of an operator network stored in advance by a main card, a secondary card or a multi-mode dual-card terminal, wherein when the main access is indicated to conduct network search according to the PLMN frequency point list of the operator network stored in advance by the main card, the secondary card or the multi-mode dual-card terminal, the search priority of the PLMN frequency point list of the operator network related to the main card is higher than the search priority of the PLMN frequency point list of the operator network related to the secondary card; and are

When determining that the main access searches available main card cells and determining that the reason that the main card cannot be normally used before is that the signal quality is lower than a preset threshold, indicating the main access to a network corresponding to the available main card cells; or when determining that the main path does not search an available main card cell but searches an available set access mode cell, indicating the main path to access to a network corresponding to the searched set access mode cell; or, when it is determined that the main path does not search for an available main card cell and does not search for an available set access mode cell, instructing the main path to continue to perform the network search operation according to the PLMN frequency point list of the operator network, which is pre-stored by the main card, the secondary card or the multi-mode dual-card terminal.

and if the main card is determined to recover the available state, indicating the main card to reside in the corresponding main access network again, and simultaneously indicating the auxiliary card to roll back to the corresponding auxiliary access network.

Further, if it is determined that the primary card has recovered the available state, indicating that the primary card re-resides in the corresponding primary access network, and indicating that the secondary card backs to the corresponding secondary access network, includes:

if the auxiliary access is determined to be in an idle state, indicating the auxiliary access to perform network search according to an access mode supported by the auxiliary access according to a PLMN frequency point list of an operator network related to the main card and pre-stored by the main card or the multi-mode dual-card terminal;

if the fact that the available main card cell is searched by the auxiliary access is determined, the auxiliary access is indicated to reside in the corresponding main card cell, and adjacent cell information of the main card cell where the auxiliary access resides is obtained; and the number of the first and second groups,

when the service processing capacity of the main path is lower than a set threshold value or in a non-paging cycle, network search is carried out according to the set network priority and the neighbor information acquired by the auxiliary path; and are

When determining that the main path searches available main card cells, indicating the main path to attach to a network where the auxiliary card resides and accessing to a network corresponding to the available main card cells searched by the main path; and the number of the first and second groups,

and after the main access is successfully accessed to the network corresponding to the available main card cell searched by the main access, indicating the auxiliary access to attach to the network where the main card resides and reside in the available cell corresponding to the access mode supported by the auxiliary access.

when the service processing capacity of the main channel is indicated to be lower than a set threshold value or in a non-paging cycle, network search is carried out according to an access mode supported by the main channel and a set network priority according to a PLMN frequency point list of an operator network related to the main card and pre-stored by the main card or the multi-mode dual-card terminal;

and after the main channel is successfully accessed to the network corresponding to the available main card cell searched by the main channel, indicating the auxiliary channel to search the network and reside in the available cell corresponding to the access mode supported by the auxiliary channel according to the PLMN frequency point of the operator network related to the auxiliary card and pre-stored by the auxiliary card or the multi-mode dual-card terminal.

Further, if it is determined that the main card of the dual-mode terminal cannot be used normally, and it is determined that the auxiliary card of the dual-mode terminal is in an available state and the auxiliary card supports at least one access mode other than the access mode supported by the auxiliary channel of the dual-mode terminal, the method further includes:

upgrading or self-adapting the original auxiliary card to be the current main card, and degrading or self-adapting the original main card to be the current auxiliary card;

after determining that the original master card has recovered the available state, the method further comprises:

and upgrading or self-adapting the current auxiliary card to be a main card, and degrading or self-adapting the current main card to be an auxiliary card.

Further, if it is determined that the main card of the multi-mode dual-card terminal cannot be used normally, before instructing the main channel of the multi-mode dual-card terminal to perform network search for setting an access mode according to the secondary card or a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored in the multi-mode dual-card terminal, the method further includes:

and determining that the time length of the main card of the multi-mode dual-card terminal which cannot be normally used is greater than a preset time length threshold value.

Correspondingly, an embodiment of the present invention further provides an access mode switching device for a multimode dual-card terminal, including:

the determining module is used for determining whether the multimode dual-card terminal meets the following conditions: the main card of the multimode dual-card terminal cannot be normally used, the auxiliary card of the multimode dual-card terminal is in an available state, and the auxiliary card supports at least one other access mode except the access mode supported by the auxiliary access of the multimode dual-card terminal;

the control module is used for indicating the main channel of the multimode dual-card terminal to carry out network search for setting an access mode according to a PLMN frequency point list of an operator network related to the auxiliary card, which is prestored by the auxiliary card or the multimode dual-card terminal, when the determining module determines that the main card of the multimode dual-card terminal cannot be normally used and determines that the auxiliary card of the multimode dual-card terminal is in an available state and the auxiliary card supports at least one other access mode except the access mode supported by the auxiliary channel of the multimode dual-card terminal; the set access mode refers to an access mode which is not supported by the auxiliary access but supported by the auxiliary card;

the determining module is further configured to determine whether the main path searches an available cell in the set access mode after the control module instructs the main path to perform network search in the set access mode according to a PLMN frequency point list of an operator network related to the secondary card and pre-stored in the secondary card or the multi-mode dual-card terminal;

the control module is further configured to instruct the main path to access to a network corresponding to the searched cell with the set access mode when the determination module determines that the main path searches for the available cell with the set access mode.

Further, the access mode switching device further includes a sending module and a receiving module:

the sending module is used for informing the terminal user corresponding to the multimode dual-card terminal of the information of the searched available cell in the set access mode after the main access is determined to search the available cell in the set access mode;

the receiving module is used for receiving the indication information fed back by the terminal user whether to allow the secondary card to access the searched network corresponding to the cell with the set access mode;

the control module is specifically configured to, when the receiving module receives indication information fed back by the terminal user and allowing access to the searched network corresponding to the cell in the set access mode by using the secondary card, indicate the primary access to the searched network corresponding to the cell in the set access mode.

Further, the control module is further configured to instruct the secondary access to detach the network where the secondary access resides after instructing the primary access to the network corresponding to the searched cell with the set access mode.

Further, the control module is further configured to, after instructing the main channel to perform network search for setting an access mode according to a PLMN frequency point list of an operator network related to the secondary card and pre-stored in the secondary card or the multi-mode dual-card terminal, if the main channel does not search the available cell with the set access mode according to the determination result of the determination module, indicating the main channel to perform network search according to a preset period and a PLMN frequency point list of an operator network prestored by the main card, the auxiliary card or the multimode dual-card terminal, wherein, when the main channel is indicated to perform network search according to the PLMN frequency point list of the operator network pre-stored by the main card, the auxiliary card or the multimode dual-card terminal, the search priority of the PLMN frequency point list of the operator network related to the main card is higher than that of the PLMN frequency point list of the operator network related to the auxiliary card; and the number of the first and second groups,

when determining that the main access searches for an available main card cell according to the determination result of the determination module and determining that the reason that the main card cannot be normally used before is that the signal quality is lower than a preset threshold, indicating that the main access is accessed to a network corresponding to the available main card cell; or, when determining that the main path does not search for an available main card cell but searches for an available set access mode cell according to the determination result of the determination module, indicating the main path to access to a network corresponding to the searched set access mode cell; or, when determining that the main channel does not search an available main card cell and does not search an available set access mode cell according to the determination result of the determination module, instructing the main channel to continue to perform the operation of network search according to the PLMN frequency point list of the operator network pre-stored by the main card, the auxiliary card or the multi-mode dual-card terminal;

the determining module is further configured to determine whether the main channel searches an available main card cell and/or a cell in a set access mode after the control module instructs the main channel to perform network search according to a PLMN frequency point list of an operator network pre-stored by the main card, the auxiliary card, or the multi-mode dual-card terminal.

Further, the access mode switching device further includes a status monitoring module:

the state monitoring module is used for monitoring whether the main card recovers the available state in real time;

the control module is further configured to, after instructing the primary access to a network corresponding to the searched cell in the set access mode, if it is determined that the primary card has recovered the available state according to the monitoring result of the state monitoring module, instruct the primary card to camp again on the corresponding primary access network, and instruct the secondary card to back to the corresponding secondary access network.

Further, the control module is specifically configured to, after instructing the main access to a network corresponding to a searched cell in a set access mode, if it is determined that the main card is in a recovered available state according to a monitoring result of the state monitoring module, if it is determined that the secondary access is in an idle state, instruct the secondary access to perform network search according to an access mode supported by the secondary access according to a PLMN frequency point list of an operator network related to the main card and pre-stored by the main card or the multimode dual-card terminal; and are

Further, the control module is specifically configured to, after instructing the main channel to access to a network corresponding to a searched cell in a set access mode, if it is determined that the main card has recovered an available state according to a monitoring result of the state monitoring module, instruct the main channel to perform network search according to a PLMN frequency point list of an operator network related to the main card and pre-stored by the main card or the multimode dual-card terminal, and according to an access mode supported by the main channel and a set network priority, when a traffic processing amount of the main channel is lower than a set threshold or is in a non-paging cycle; and are

Further, the control module is further configured to, if it is determined that the main card of the multimode dual-card terminal cannot be used normally according to the determination result of the determination module, and it is determined that the auxiliary card of the multimode dual-card terminal is in an available state and the auxiliary card supports at least one other access mode except an access mode supported by an auxiliary access of the multimode dual-card terminal, upgrade or adaptively change the original auxiliary card to the current main card, and downgrade or adaptively change the original main card to the current auxiliary card; or,

and after determining that the original main card restores the available state, upgrading or self-adapting the current auxiliary card to be the main card, and degrading or self-adapting the current main card to be the auxiliary card.

Further, the control module is further configured to determine that a duration of the abnormal use of the main card of the multi-mode dual-card terminal is greater than a preset duration threshold before indicating that the main channel of the multi-mode dual-card terminal performs network search in a set access mode according to the secondary card or a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored in the multi-mode dual-card terminal, according to a determination result of the determination module.

Further, an embodiment of the present invention further provides a multimode dual-card terminal, where the multimode dual-card terminal includes the access mode switching device in the embodiment of the present invention.

The invention has the following beneficial effects:

the embodiment of the invention provides an access mode switching method of a multimode dual-card terminal and related equipment, if the main card of the multimode dual-card terminal cannot be normally used, and determining that a secondary card of the multi-mode dual-card terminal is in an available state and that the secondary card supports at least one access mode other than the access mode supported by the secondary access, the main channel of the multimode dual-card terminal can be instructed to perform network search for setting the access mode according to the pre-stored PLMN frequency point list of the operator network related to the secondary card, and when determining that the available set access mode cell is searched, indicating the main access to the network corresponding to the searched set access mode cell, so that the secondary card can be accessed into the corresponding set access mode network through the main access, wherein, the set access mode refers to an access mode which is not supported by the secondary access but supported by the secondary card. That is to say, in the technical solution of the embodiment of the present invention, a user may use one or more wireless access technologies supported by an auxiliary card through a main access to perform corresponding service transmission without being limited by an access mode supported by the auxiliary access, so that the actual access capability of the auxiliary card may be extended without modifying the hardware structure of the existing multimode dual-card terminal, and the flexibility of the terminal usage mode may be improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic flowchart illustrating an access mode switching method of a multimode dual-card terminal according to a first embodiment of the present invention;

fig. 2 is a first flowchart illustrating a process of the primary card re-residing to the corresponding primary access network and the secondary card backing back to the corresponding secondary access network when the primary card recovers the available state according to the first embodiment of the present invention;

fig. 3 is a second flowchart illustrating that, in the first embodiment of the present invention, when the main card recovers the available state, the main card resides in the corresponding main access network again, and the auxiliary card backs to the corresponding auxiliary access network;

fig. 4 is a schematic diagram illustrating state switching of the multimode dual-card terminal according to a first embodiment of the present invention;

fig. 5 is a schematic structural diagram of an access mode switching device of the multimode dual-card terminal according to a second embodiment of the present invention;

fig. 6 is a schematic structural diagram of the multimode dual-card terminal according to the second embodiment of the invention.

Detailed Description

Aiming at the problems in the prior art, the application provides a switching scheme of an access mode of a multimode double-card terminal based on the multimode double-card terminal of which an auxiliary channel can only access a network through 2G or 3G/2G, and the scheme can achieve the following purposes on the basis of not modifying the hardware structure of the conventional multimode double-card terminal:

under the condition that the main card has poor signal quality or cannot be normally used due to problems of expense, flow and the like, the auxiliary card can be used, and the auxiliary card can support one or more access modes except the access mode supported by the auxiliary access, the access capability of the auxiliary card is expanded, so that the auxiliary card is not limited by the access mode supported by the auxiliary access, and other access technologies supported by the auxiliary card can be used for bearing services, thereby greatly expanding the actual access capability of the auxiliary card and improving the flexibility of the use mode of the terminal.

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

an embodiment of the present invention provides an access mode switching method for a multimode dual-card terminal, as shown in fig. 1, which is a schematic flow chart of the access mode switching method for the multimode dual-card terminal according to the embodiment of the present invention, and the method may include the following steps:

step 101: if it is determined that a main card of a multi-mode dual-card terminal cannot be normally used, and it is determined that a secondary card of the multi-mode dual-card terminal is in an available state and the secondary card supports at least one other access mode except an access mode supported by a secondary access of the multi-mode dual-card terminal, indicating the main access of the multi-mode dual-card terminal to perform network search for setting an access mode according to a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored in the secondary card or the multi-mode dual-card terminal, wherein the setting of the access mode refers to an access mode which is not supported by the secondary access but is supported by the secondary card.

Specifically, if it is determined that the main card of the multimode dual-card terminal has the problems that the signal quality is lower than a preset threshold (even no signal coverage) due to the coverage problem, or the cost, the flow rate and the like are limited, the main card of the multimode dual-card terminal can be considered to be incapable of being used normally.

Further, in order to reduce the number of times of performing network search on the main path of the multi-mode dual-card terminal, after determining that the main card of the multi-mode dual-card terminal cannot be used normally, and before instructing the main path of the multi-mode dual-card terminal to perform network search in a set access mode according to the secondary card or a PLMN frequency point list of an operator network related to the secondary card, which is stored in advance by the multi-mode dual-card terminal, the method may further include:

That is, preferably, when it is determined that the signal quality of the primary card is lower than a predetermined threshold due to coverage problems, or cannot be used normally due to problems such as charges and traffic for a predetermined period of time, and it is determined that the secondary card is in an available state and the secondary card (or the type of the secondary card) can support one or more radio access technologies other than the secondary access capability, the multi-mode dual-card terminal enters a corresponding access mode switching state to expand the actual access capability of the secondary card.

It should be noted that, in the embodiment of the present invention, when the actual access capability of the secondary card is expanded, in order to ensure or improve the transmission efficiency of data, preferably, when the primary card cannot be used normally, the expansion of the actual access capability of the secondary card may generally refer to switching the secondary card to an access mode with a larger bandwidth, that is, switching the secondary card to an access mode that is not supported by the secondary channel but is supported by the secondary card and has a higher priority than an access mode supported by the secondary channel.

For example, assuming that the priority of the access mode is 4G, 3G, and 2G from high to low, if the secondary access supports 2G access and the secondary card supports 4G/3G/2G, expanding the actual access capability of the secondary card may generally refer to switching the secondary card to the 4G/3G access mode, that is, instructing the primary access of the multimode dual-card terminal to search for a corresponding 4G/3G available cell according to a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored by the secondary card or the multimode dual-card terminal; if the auxiliary channel supports 2G access and the auxiliary card supports 3G/2G, expanding the actual access capability of the auxiliary card can generally mean switching the auxiliary card to a 3G access mode, that is, indicating the main channel of the multimode dual-card terminal to search a corresponding 3G available cell according to a PLMN frequency point list of an operator network related to the auxiliary card, which is pre-stored by the auxiliary card or the multimode dual-card terminal; or, if the secondary channel supports 3G access and the secondary card supports 4G/3G/2G, expanding the actual access capability of the secondary card may generally refer to switching the secondary card to a 4G access mode, that is, may instruct the primary channel of the dual-mode terminal to search for a corresponding 4G available cell according to the PLMN frequency point list of the secondary card or the PLMN frequency point list of the operator network related to the secondary card, which is stored in advance by the secondary card or the dual-mode terminal.

It should be noted that, if the sub-channel supports 3G access and the sub-card supports 4G/3G/2G, the sub-card may be switched to the 4G or 2G access mode when the actual access capability of the sub-card is expanded, that is, the sub-card may be switched to any access mode that is not supported by the sub-channel but supported by the sub-card.

In addition, it should be noted that, in the embodiment of the present invention, when the main path of the multimode dual-card terminal performs corresponding network search, the network search is usually performed by using a 4G/3G/2G baseband chip (i.e., a multimode processing module) in the main path, which is not described in detail in this embodiment of the present invention.

Step 102: and if the main access is determined to search the available set access mode cell, indicating the main access to the network corresponding to the searched set access mode cell.

Specifically, if an available cell with a set access mode is searched, the primary access may perform a corresponding attach procedure or perform operations such as tracking area update (TAU, 4G network), routing area update (RAU, LAU, 3G network), etc. according to a corresponding instruction, and access the primary access to a corresponding network, so that the secondary card may access to the corresponding network with the set access mode through the primary access.

That is, in the technical solution of the embodiment of the present invention, when it is determined that the primary card cannot be normally used, the secondary card is in an available state, and the secondary card supports at least one access mode other than the access mode supported by the secondary access, the user may perform corresponding service transmission by using one or more wireless access technologies supported by the secondary card through the primary access without being limited by the access mode supported by the secondary access, so as to expand the actual access capability of the secondary card and improve the flexibility of the terminal use mode.

It should be noted that, in practical applications, when the primary card cannot be used normally, the actual access capability of the secondary card may be specifically extended to which access mode or access modes, and may be determined by multiple aspects such as terminal implementation, network environment, operator policy, and the like.

For example, if the main path adopts a single standby mode (e.g., CSFB), when the main card cannot be used normally, and when the actual access capability of the secondary card is expanded in the above manner, the secondary card may reside in any one of the set access modes supported by the secondary card through the main path according to the customized policy of the operator, the network environment, the service requirement, and the like; similarly, if the main channel adopts a multimode dual standby mode, when the main card cannot be used normally, and when the actual access capability of the secondary card is expanded in the above manner, the secondary card may reside in any two set access modes supported by the secondary card through the main channel according to the customized policy of the operator, the network environment, the service requirement, and the like.

Specifically, for example, if the radio access technology that can be supported by the secondary card includes 4G (which may include one or more of TD-LTE, LTE FDD), 3G (which may include one or more of TD-SCDMA, WCDMA, CDMA 2000), and 2G (such as GSM), and the secondary path only includes a 2G module (i.e. only supports GSM), then at this time, the actual access technology of the secondary card is only 2G, and accordingly, when the primary card cannot be used normally, and when the actual access capability of the secondary card is expanded in the above manner, if the primary path adopts a single standby mode (such as CSFB), the secondary card may reside in a network of 4G/3G/2G according to the policy customized by the operator, the network environment, and the service requirement, etc.; if the main access adopts a multi-mode dual-standby mode, the auxiliary card can reside in two networks of 4G/3G/2G according to the customized strategy of an operator, the network environment, the service requirement and the like.

It should be noted that, when the cells in the set access mode searched by the main path are multiple, the cells in the access mode with the higher priority may be preferentially selected for access according to the priority corresponding to each access mode, which is not described in detail in the embodiments of the present invention.

Further, in the embodiment of the present invention, after determining that the primary path searches for an available cell with a set access mode, the method may further include:

and informing the terminal user corresponding to the multimode dual-card terminal of the information of the searched available cell with the set access mode, and receiving the indication information fed back by the terminal user whether the auxiliary card is allowed to be used for accessing the searched network corresponding to the cell with the set access mode. Specifically, the indication information that whether the terminal user allows to use the secondary card to access the searched network corresponding to the cell with the set access mode through a menu, a shortcut, or the like may be received.

Accordingly, instructing the main access to the network corresponding to the searched cell with the set access mode may include:

It should be noted that, if the indication information fed back by the terminal user and indicating that the secondary card is not allowed to access the network corresponding to the searched set access mode cell is received, it is not necessary to indicate the primary access to the network corresponding to the searched set access mode cell, and at this time, the secondary card still uses the secondary access to maintain network access. This is more suitable for the case where the priority of the searched set access mode is lower than the priority of the access mode supported by the secondary path.

Further, in the embodiment of the present invention, after instructing the main access to the network corresponding to the searched cell with the set access mode, the method may further include:

instructing the secondary path to detach from the network on which it resides.

Further, in the embodiment of the present invention, after the main path is instructed to perform network search for setting an access mode according to a PLMN frequency point list of an operator network related to the secondary card and pre-stored in the secondary card or the multi-mode dual-card terminal, the method may further include:

That is to say, after the main channel is instructed to perform network search for setting an access mode according to a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored by the secondary card or the multi-mode dual-card terminal, if it is determined that an available cell of the setting access mode is not searched by the main channel, the multi-mode dual-card terminal may enter a corresponding network search state, and instruct the main channel to perform network search according to a pre-set period and the PLMN frequency point list of the operator network, which is pre-stored by the main card, the secondary card, or the multi-mode dual-card terminal.

Specifically, the main path may perform network search in all access modes of the main card according to a PLMN frequency point list of an operator network related to the main card, which is pre-stored by the main card or the multi-mode dual-card terminal according to a corresponding instruction, and if an available cell corresponding to the main card is not searched, may continue to perform network search in a set access mode according to a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored by the secondary card or the multi-mode dual-card terminal.

Further, when the main path searches for an available main card cell and the reason that the main card cannot be used normally before is that the signal quality is lower than a preset threshold (at this time, it may be determined that the main card has recovered to an available state), the main path may access to a network corresponding to the searched available main card cell according to a corresponding indication, and at this time, the multimode dual-card terminal may return to a normal use state; or, when the main path does not search an available main card cell but searches an available secondary card setting access mode cell, the main path may access to a network corresponding to the searched setting access mode cell according to a corresponding instruction, and at this time, the multi-mode dual-card terminal may enter a corresponding access mode switching state; or, when the main path does not search an available main card cell and does not search an available secondary card setting access mode cell, the multi-mode dual-card terminal may be kept in a network search state, and at this time, the main path may continue to perform the network search operation according to the PLMN frequency point list of the operator network pre-stored in the main card, the secondary card, or the multi-mode dual-card terminal according to the corresponding instruction.

Further, it should be noted that, in the embodiment of the present invention, after the main channel is indicated to perform a search for setting an access mode network according to a PLMN frequency point list of an operator network related to the secondary card and pre-stored in the secondary card or the multi-mode dual-card terminal, if it is determined that an available set access mode cell is not searched in the main channel, the secondary card of the multi-mode dual-card terminal may still use the secondary channel to maintain network access when the multi-mode dual-card terminal is in a network search state, which is not described in detail in the embodiment of the present invention.

That is, after the main channel is instructed to access to the network corresponding to the searched cell with the set access mode (i.e., when the multimode dual-card terminal is in the access mode switching state), if it is determined that the main card has recovered the available state, the terminal may enter the corresponding access mode fallback state, instruct the main card to camp again to the corresponding main channel access network, and instruct the secondary card to fallback to the corresponding secondary channel access network.

Specifically, as shown in fig. 2, after the main access is instructed to access to the network corresponding to the searched cell with the set access mode, if it is determined that the main card has recovered the available state, the main card is instructed to re-camp to the corresponding main access network, and the secondary card is instructed to back to the corresponding secondary access network, which may specifically include the following steps:

step 201: and if the auxiliary access is determined to be in an idle state, indicating the auxiliary access (specifically, a 2G baseband chip or a 2G/3G baseband chip of the auxiliary access) to perform network search according to an access mode supported by the auxiliary access according to a PLMN frequency point list of an operator network related to the main card and pre-stored by the main card or the multimode dual-card terminal.

Specifically, the secondary path may be searched in a periodic trigger manner or a real-time manner.

Step 202: and if the secondary path is determined to search for the available primary card cell, indicating that the secondary path resides in the corresponding primary card cell and acquiring the neighbor cell information of the primary card cell where the secondary path resides, otherwise, continuing to execute the step 201.

Specifically, after the secondary access is camped on the corresponding primary card cell, information such as a cell frequency point, a cell ID, and the like of one or more other access modes except the access mode supported by the secondary access can be obtained. An embodiment is that, if the secondary path only supports the 2G access technology, after the secondary path searches for a 2G cell accessible by the primary card and camps on the cell, the neighboring cell relationship of the cell (which may include information such as frequency points, cell IDs, and the like of neighboring cells in one or more access modes of 4G/3G) may be obtained by reading a broadcast message of the cell. Another embodiment is that, if the secondary path supports the 3G/2G access technology, the secondary path may search for a 3G/2G available cell of the main card according to the priority, and read the broadcast message of the cell after successful camping, to obtain the neighboring cell relationship of the cell (which may include information such as frequency points, cell IDs, and the like of neighboring cells of one or more access modes of 4G/3G).

Step 203: and indicating the main channel to perform network search according to the set network priority according to the adjacent cell information (such as the acquired cell frequency point and other information) acquired by the auxiliary channel when the service processing capacity is lower than a set threshold (such as no service) or in a non-paging cycle.

Specifically, the set network priority may be 4G greater than 3G greater than 2G.

Step 204: and when determining that the main path searches the available main card cell, indicating the main path to attach to the network where the auxiliary card resides, and accessing to the network corresponding to the available main card cell searched by the main path.

Specifically, the main path may reside in a network with a higher priority according to the set network priority.

Step 205: and after the main access is successfully accessed to the network corresponding to the available main card cell searched by the main access, indicating the auxiliary access to attach to the network where the main card resides and reside in the available cell corresponding to the access mode supported by the auxiliary access.

Further, as shown in fig. 3, after the main access is instructed to access to the network corresponding to the searched cell with the set access mode, if it is determined that the main card has recovered the available state, the main card is instructed to re-camp to the corresponding main access network, and the secondary card is instructed to back to the corresponding secondary access network, which may specifically include the following steps:

step 301: and when the service processing capacity of the main channel is indicated to be lower than a set threshold value or in a non-paging cycle, network search is carried out according to an access mode supported by the main channel and a set network priority according to a PLMN frequency point list of an operator network related to the main card and pre-stored by the main card or the multi-mode dual-card terminal.

Specifically, the network priority when performing the network search may be 4G greater than 3G greater than 2G.

Step 302: when determining that the main path searches available main card cells, indicating the main path to attach to a network where the auxiliary card resides and accessing to a network corresponding to the available main card cells searched by the main path; accordingly, upon determining that the primary path does not search for an available primary card cell, then step 301 may continue.

Step 303: and after the main channel is successfully accessed to the network corresponding to the available main card cell searched by the main channel, indicating the auxiliary channel to search the network and reside in the available cell corresponding to the access mode supported by the auxiliary channel according to the PLMN frequency point of the operator network related to the auxiliary card and pre-stored by the auxiliary card or the multi-mode dual-card terminal.

That is, after the secondary card is switched to the primary access, the multimode dual-card terminal may monitor whether the primary card has recovered the available state in real time, and when it is determined that the primary card has recovered the available state, enter an access mode fallback state, instruct the primary card to camp on the corresponding primary access network again, and instruct the secondary card to fallback to the corresponding secondary access network, so that the multimode dual-card terminal can revert to the corresponding normal use state.

Specifically, according to different applicable scenarios, the main card resides in the corresponding main access network again, and the processing flow of the secondary card backing to the corresponding secondary access network may have two schemes shown in fig. 2 and fig. 3, and the terminal may automatically select the corresponding fallback scheme according to the access mode supported by the main card and the PLMN information of the local network, and the like. For example, in an embodiment, if the primary card supports the 4G/3G/2G access mode, and finds that there is no local 2G network environment through the PLMN information in the location, and the secondary path only supports 2G access, the terminal needs to select the fallback scheme shown in fig. 3, which is not described in detail in this embodiment of the present invention.

Further, it should be noted that, in the embodiment of the present invention, the multimode dual-card terminal may perform corresponding switching among the states of the conventional use state, the access mode switching state, the network search state, the access mode fallback state, and the like according to the corresponding switching condition, and a specific terminal state switching diagram may be as shown in fig. 4, which is not described herein in detail in the embodiment of the present invention.

Further, in the embodiment of the present invention, if it is determined that the main card of the dual-mode terminal cannot be used normally, and it is determined that the auxiliary card of the dual-mode terminal is in an available state and the auxiliary card supports at least one access mode other than the access mode supported by the auxiliary channel of the dual-mode terminal, the method may further include:

and upgrading or self-adapting the original auxiliary card to be the current main card, and degrading or self-adapting the original main card to be the current auxiliary card.

Accordingly, after determining that the original master card has recovered the available state, the method may further include:

That is, if it is determined that the main card of the multi-mode dual-card terminal cannot be used normally, and it is determined that the auxiliary card of the multi-mode dual-card terminal is in an available state and the auxiliary card supports at least one access mode other than the access mode supported by the auxiliary channel of the multi-mode dual-card terminal, the relationship between the main card and the auxiliary card may be exchanged. Accordingly, after determining that the original main card has recovered the available state, the main card and the auxiliary card that have been exchanged before may be exchanged again, which is not described in detail in the embodiments of the present invention.

The embodiment of the invention provides an access mode switching method of a multimode dual-card terminal, if the main card of the multimode dual-card terminal cannot be normally used, and determining that a secondary card of the multi-mode dual-card terminal is in an available state and that the secondary card supports at least one access mode other than the access mode supported by the secondary access, the main channel of the multimode dual-card terminal can be instructed to perform network search for setting the access mode according to the pre-stored PLMN frequency point list of the operator network related to the secondary card, and when determining that the available set access mode cell is searched, indicating the main access to the network corresponding to the searched set access mode cell, so that the secondary card can be accessed into the corresponding set access mode network through the main access, wherein, the set access mode refers to an access mode which is not supported by the secondary access but supported by the secondary card. That is to say, in the technical solution of the embodiment of the present invention, a user may use one or more wireless access technologies supported by an auxiliary card through a main channel to perform corresponding service transmission, without being limited by an access mode supported by the auxiliary channel, so that the actual access capability of the auxiliary card may be extended without modifying the hardware structure of the existing multimode dual-card terminal, thereby improving the flexibility of the terminal usage mode and improving the user experience.

Example two:

based on the same inventive concept, a second embodiment of the present invention provides an access mode switching device of a multi-mode dual-card terminal, as shown in fig. 5, which is a schematic structural diagram of the access mode switching device of the multi-mode dual-card terminal in the second embodiment of the present invention, and the access mode switching device specifically includes:

the determining module 51 may be configured to determine whether the multimode dual-card terminal satisfies the following condition: the main card of the multimode dual-card terminal cannot be normally used, the auxiliary card of the multimode dual-card terminal is in an available state, and the auxiliary card supports at least one other access mode except the access mode supported by the auxiliary access of the multimode dual-card terminal; specifically, if it is determined that the main card of the multimode dual-card terminal has the problems that the signal quality is lower than a preset threshold (even no signal coverage) due to the coverage problem, or the cost, the flow rate and the like are limited, the main card of the multimode dual-card terminal can be considered to be incapable of being used normally.

The control module 52 is configured to, when the determining module 51 determines that the primary card of the dual-mode terminal cannot be used normally, and determines that the secondary card of the dual-mode terminal is in an available state and the secondary card supports at least one other access mode other than the access mode supported by the secondary access of the dual-mode terminal, instruct the primary access of the dual-mode terminal to perform network search for setting an access mode according to the secondary card or a PLMN frequency point list of an operator network related to the secondary card, which is stored in advance in the dual-mode terminal, where the setting of the access mode refers to an access mode that is supported by the secondary card but is not supported by the secondary access.

That is, when it is determined that the primary card cannot be used normally, and it is determined that the secondary card is in an available state and the secondary card can support one or more radio access technologies other than the secondary access capability, the multimode dual-card terminal may enter a corresponding access mode switching state to expand the actual access capability of the secondary card. Moreover, in order to ensure or improve the data transmission efficiency, the step of expanding the actual access capability of the secondary card may generally refer to switching the secondary card to an access mode with a larger bandwidth, that is, switching the secondary card to an access mode that is not supported by the secondary channel but is supported by the secondary card and has a higher priority than an access mode supported by the secondary channel, which is not described in detail in the embodiments of the present invention.

The determining module 51 may be further configured to determine whether the main path searches an available cell in the set access mode after the control module 52 instructs the main path to perform network search in the set access mode according to a PLMN frequency point list of an operator network related to the secondary card and pre-stored in the secondary card or the multi-mode dual-card terminal.

The control module 52 may be further configured to, when the determining module 51 determines that the main path searches for an available set access mode cell, instruct the main path to access to a network corresponding to the searched set access mode cell.

Further, the access mode switching device may further include a sending module 53 and a receiving module 54, where:

the sending module 53 is configured to notify the terminal user corresponding to the multimode dual-card terminal of the information of the searched available cell in the set access mode after determining that the main access searches the available cell in the set access mode;

the receiving module 54 may be configured to receive indication information fed back by the terminal user whether to allow access to the searched network corresponding to the cell with the set access mode by using the secondary card.

Accordingly, the control module 52 is specifically configured to instruct the main channel to access to the network corresponding to the searched set access mode cell when the receiving module 54 receives the instruction information that allows the secondary card to access to the network corresponding to the searched set access mode cell and is fed back by the terminal user.

It should be noted that, if receiving the indication information fed back by the terminal user and indicating that the secondary card is not allowed to access the network corresponding to the searched set access mode cell, the control module 52 may not need to indicate the primary access to the network corresponding to the searched set access mode cell, and at this time, the secondary card still uses the secondary access to maintain network access.

Further, the control module 52 may be further configured to instruct the secondary access to attach to the network where the secondary access resides after instructing the primary access to the network corresponding to the searched cell with the set access mode.

Further, the control module 52 may be further configured to, after instructing the main path to perform network search for setting an access mode according to a PLMN frequency point list of an operator network related to the secondary card and pre-stored in the secondary card or the multi-mode dual-card terminal, if it is determined that the main path does not search for an available cell of the set access mode according to the determination result of the determination module 51, instruct the main path to perform network search according to a preset period and the PLMN frequency point list of the operator network and pre-stored in the main card, the secondary card or the multi-mode dual-card terminal; when the main channel is indicated to perform network search according to a PLMN frequency point list of an operator network pre-stored by the main card, the auxiliary card or the multi-mode dual-card terminal, the search priority of the PLMN frequency point list of the operator network related to the main card is higher than the search priority of the PLMN frequency point list of the operator network related to the auxiliary card; and the number of the first and second groups,

when determining that the main access searches for an available main card cell according to the determination result of the determination module 51 and determining that the reason that the main card cannot be normally used before is that the signal quality is lower than a preset threshold, indicating that the main access is accessed to a network corresponding to the available main card cell;

or, when determining that the main path does not search for an available main card cell but searches for an available set access mode cell according to the determination result of the determining module 51, indicating the main path to access to the network corresponding to the searched set access mode cell;

or, when it is determined that the main path does not search an available main card cell and does not search an available cell in the set access mode according to the determination result of the determination module 51, the main path is instructed to continue to perform the network search operation according to the PLMN frequency point list of the operator network pre-stored in the main card, the secondary card, or the multi-mode dual-card terminal.

That is to say, after the main channel is instructed to search for a set access mode network according to a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored by the secondary card or the multi-mode dual-card terminal, if it is determined that an available set access mode cell is not searched by the main channel, the multi-mode dual-card terminal may enter a corresponding network search state, and instruct the main channel to perform network search according to a pre-set period and the PLMN frequency point list of the operator network, which is pre-stored by the main card, the secondary card, or the multi-mode dual-card terminal.

Further, it should be noted that, in the embodiment of the present invention, after the main channel is indicated to perform a search for setting an access mode network according to a PLMN frequency point list of an operator network related to the secondary card and pre-stored in the secondary card or the multi-mode dual-card terminal, if it is determined that an available set access mode cell is not searched in the main channel, the secondary card of the multi-mode dual-card terminal may be indicated to still use the secondary channel to maintain network access when the multi-mode dual-card terminal is in a network search state, which is not described in detail in the embodiment of the present invention.

Correspondingly, the determining module 51 may be further configured to determine whether the main path searches an available main card cell and/or a cell in a set access mode after the control module 52 instructs the main path to perform network search according to a PLMN frequency point list of an operator network pre-stored in the main card, the secondary card, or the multi-mode dual-card terminal.

Further, the access mode switching device may further include a status monitoring module 55:

the status monitoring module 55 may be configured to monitor whether the main card has recovered to an available status in real time;

the control module 52 may be further configured to, after instructing the primary access to the network corresponding to the searched cell in the set access mode, if it is determined that the primary card has recovered the available state according to the monitoring result of the state monitoring module 55, instruct the primary card to camp again on the corresponding primary access network, and instruct the secondary card to roll back to the corresponding secondary access network.

That is to say, after the main access is indicated to access the network corresponding to the searched cell with the set access mode (that is, when the multimode dual-card terminal is in the access mode switching state), if it is determined that the main card has recovered the available state, the multimode dual-card terminal may enter the corresponding access mode fallback state, indicate that the main card re-resides in the corresponding main access network, and indicate that the secondary card backs to the corresponding secondary access network.

Further, the control module 52 is specifically configured to, after instructing the main access to the network corresponding to the searched cell in the set access mode, if it is determined that the main card is in the recovered available state according to the monitoring result of the state monitoring module 55, if it is determined that the auxiliary access is in the idle state, instruct the auxiliary access to perform network search according to the access mode supported by the auxiliary access according to a PLMN frequency point list of an operator network related to the main card and pre-stored by the main card or the multimode dual-card terminal; and are

Further, the control module 52 may be specifically configured to, after instructing the main channel to access to the network corresponding to the searched cell in the set access mode, if it is determined that the main card has recovered the available state according to the monitoring result of the state monitoring module 55, instruct the main channel to perform network search according to a PLMN frequency point list of an operator network related to the main card and pre-stored by the main card or the multi-mode dual-card terminal, and according to the access mode supported by the main channel and the set network priority, when the traffic processing amount of the main channel is lower than a set threshold or in a non-paging cycle; and are

Further, the control module 52 may be further configured to, if it is determined that the main card of the dual-mode terminal cannot be used normally according to the determination result of the determination module 51, and it is determined that the auxiliary card of the dual-mode terminal is in an available state and the auxiliary card supports at least one other access mode except the access mode supported by the auxiliary access of the dual-mode terminal, upgrade or adaptively change the original auxiliary card to the current main card, and downgrade or adaptively change the original main card to the current auxiliary card; or,

Further, the control module 52 may be further configured to determine, if it is determined that the main card of the dual-mode terminal cannot be used normally according to the determination result of the determining module 51, that a duration that the main card of the dual-mode terminal cannot be used normally is greater than a preset duration threshold before instructing the main path of the dual-mode terminal to perform network search in a set access mode according to the secondary card or a PLMN frequency point list of an operator network related to the secondary card, which is stored in advance by the dual-mode terminal.

Further, a multimode dual-card terminal is further provided in the second embodiment of the present invention, as shown in fig. 6, which is a schematic structural diagram of the multimode dual-card terminal in the second embodiment of the present invention, and the multimode dual-card terminal may include the access mode switching device 61 in the second embodiment of the present invention, where specific structures and functions of the access mode switching device 61 may refer to the related description in the second embodiment of the present invention, and are not described herein again.

In addition, the multi-mode dual-card terminal may further include a corresponding main card 62, an auxiliary card 63, a main channel 64, an auxiliary channel 65, and the like, and the main card 62, the auxiliary card 63, the main channel 64, the auxiliary channel 65, and the like may perform corresponding network search, switching operation, and the like according to the control of the access mode switching device 61, which is not described in detail in the embodiment of the present invention.

The second embodiment of the present invention provides an access mode switching device of a multimode dual-card terminal and the multimode dual-card terminal, wherein if it is determined that a main card of the multimode dual-card terminal cannot be normally used, and determining that a secondary card of the multi-mode dual-card terminal is in an available state and that the secondary card supports at least one access mode other than the access mode supported by the secondary access, the main channel of the multimode dual-card terminal can be instructed to perform network search for setting the access mode according to the pre-stored PLMN frequency point list of the operator network related to the secondary card, and when determining that the available set access mode cell is searched, indicating the main access to the network corresponding to the searched set access mode cell, so that the secondary card can be accessed into the corresponding set access mode network through the main access, wherein, the set access mode refers to an access mode which is not supported by the secondary access but supported by the secondary card. That is to say, in the technical solution of the embodiment of the present invention, a user may use one or more wireless access technologies supported by an auxiliary card through a main channel to perform corresponding service transmission, without being limited by an access mode supported by the auxiliary channel, so that the actual access capability of the auxiliary card may be extended without modifying the hardware structure of the existing multimode dual-card terminal, thereby improving the flexibility of the terminal usage mode and improving the user experience.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An access mode switching method for a multimode dual-card terminal is characterized by comprising the following steps:

if it is determined that a main card of a multi-mode dual-card terminal cannot be normally used and it is determined that a secondary card of the multi-mode dual-card terminal is in an available state and the secondary card supports at least one other access mode except an access mode supported by a secondary access of the multi-mode dual-card terminal, indicating the main access of the multi-mode dual-card terminal to perform network search for setting an access mode according to a Public Land Mobile Network (PLMN) frequency point list of an operator network related to the secondary card, which is pre-stored by the secondary card or the multi-mode dual-card terminal; the set access mode refers to an access mode which is not supported by the auxiliary access but supported by the auxiliary card;

if the main access is determined to search the available set access mode cell, indicating the main access to the network corresponding to the searched set access mode cell;

after the main channel is indicated to perform network search for setting an access mode according to a PLMN frequency point list of an operator network related to the secondary card and pre-stored in the secondary card or the multi-mode dual-card terminal, the method further comprises the following steps:

2. The method of access mode switching according to claim 1, wherein after determining that the primary path searches for an available set access mode cell, the method further comprises:

3. The method of claim 1, wherein after instructing the main access to the network corresponding to the searched cell with the set access mode, the method further comprises:

instructing the secondary path to detach from the network on which it resides.

4. The method of claim 1, wherein after instructing the main access to the network corresponding to the searched cell with the set access mode, the method further comprises:

5. The method of claim 4, wherein if it is determined that the primary card has recovered the available state, instructing the primary card to re-camp to the corresponding primary access network and instructing the secondary card to fallback to the corresponding secondary access network comprises:

6. The method of claim 4, wherein if it is determined that the primary card has recovered the available state, instructing the primary card to re-camp to the corresponding primary access network and instructing the secondary card to fallback to the corresponding secondary access network comprises:

7. The method of claim 1, wherein if it is determined that a primary card of a multi-mode dual-card terminal cannot be normally used, and it is determined that a secondary card of the multi-mode dual-card terminal is in an available state and the secondary card supports at least one access mode other than the access mode supported by the secondary path of the multi-mode dual-card terminal, the method further comprises:

8. The method for switching access modes according to claim 1, wherein if it is determined that the main card of the multi-mode dual-card terminal cannot be used normally, before instructing the main channel of the multi-mode dual-card terminal to perform network search for setting an access mode according to the secondary card or a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored in the multi-mode dual-card terminal, the method further comprises:

9. An access mode switching device of a multimode dual-card terminal, comprising:

the control module is used for indicating the main channel of the multimode dual-card terminal to perform network search of a set access mode according to a Public Land Mobile Network (PLMN) frequency point list of an operator network related to the auxiliary card, which is prestored by the auxiliary card or the multimode dual-card terminal, when the determining module determines that the main card of the multimode dual-card terminal cannot be normally used and determines that the auxiliary card of the multimode dual-card terminal is in an available state and the auxiliary card supports at least one other access mode except the access mode supported by the auxiliary channel of the multimode dual-card terminal; the set access mode refers to an access mode which is not supported by the auxiliary access but supported by the auxiliary card;

the control module is further configured to, when the determining module determines that the main path searches for an available cell with a set access mode, instruct the main path to access to a network corresponding to the searched cell with the set access mode;

wherein, the control module is further configured to instruct the main channel to perform network search for setting an access mode according to a PLMN frequency point list of an operator network related to the secondary card and pre-stored in the secondary card or the multi-mode dual-card terminal, if the main channel does not search the available cell with the set access mode according to the determination result of the determination module, indicating the main channel to perform network search according to a preset period and a PLMN frequency point list of an operator network prestored by the main card, the auxiliary card or the multimode dual-card terminal, wherein, when the main channel is indicated to perform network search according to the PLMN frequency point list of the operator network pre-stored by the main card, the auxiliary card or the multimode dual-card terminal, the search priority of the PLMN frequency point list of the operator network related to the main card is higher than that of the PLMN frequency point list of the operator network related to the auxiliary card; and the number of the first and second groups,

when determining that the main access searches for an available main card cell according to the determination result of the determination module and determining that the reason that the main card cannot be normally used before is that the signal quality is lower than a preset threshold, indicating that the main access is accessed to a network corresponding to the available main card cell; or, when determining that the main path does not search for an available main card cell but searches for an available set access mode cell according to the determination result of the determination module, indicating the main path to access to a network corresponding to the searched set access mode cell; or, when it is determined that the main path does not search an available main card cell and does not search an available set access mode cell according to the determination result of the determination module, the main path is instructed to continue to perform the operation of network search according to the PLMN frequency point list of the operator network pre-stored by the main card, the auxiliary card or the multi-mode dual-card terminal.

10. The access mode switching device of claim 9, wherein the access mode switching device further comprises a transmitting module and a receiving module:

11. The access mode switching device of claim 9,

the control module is further configured to instruct the secondary access to attach to a network where the secondary access resides after instructing the primary access to the network corresponding to the searched cell with the set access mode.

12. An access mode switching apparatus according to claim 9,

13. The access mode switching device of claim 9, wherein the access mode switching device further comprises a status monitoring module:

14. The access mode switching device of claim 13,

the control module is specifically configured to, after instructing the primary access to a network corresponding to a searched cell in a set access mode, if it is determined that the primary card is in a recovered available state according to a monitoring result of the state monitoring module, instruct the secondary access to perform network search according to an access mode supported by the secondary access according to a PLMN frequency point list of an operator network related to the primary card, where the PLMN frequency point list is pre-stored by the primary card or the multimode dual-card terminal and is associated with the primary card, if it is determined that the secondary access is in an idle state; and are

15. The access mode switching device of claim 13,

the control module is specifically configured to, after instructing the main channel to access to a network corresponding to a searched cell in a set access mode, if it is determined that the main card has recovered an available state according to a monitoring result of the state monitoring module, instruct the main channel to perform network search according to an access mode supported by the main channel and a set network priority according to a PLMN frequency point list of an operator network related to the main card and pre-stored by the main card or the multimode dual-card terminal when a service processing amount of the main channel is lower than a set threshold or in a non-paging cycle; and are

16. The access mode switching device of claim 9,

the control module is further configured to, if it is determined that the main card of the multimode dual-card terminal cannot be normally used according to the determination result of the determination module, and it is determined that the auxiliary card of the multimode dual-card terminal is in an available state and the auxiliary card supports at least one other access mode except the access mode supported by the auxiliary access of the multimode dual-card terminal, upgrade or adaptively change the original auxiliary card to the current main card, and downgrade or adaptively change the original main card to the current auxiliary card; or,

17. The access mode switching device of claim 9,

the control module is further configured to determine that a duration of the abnormal use of the main card of the multi-mode dual-card terminal is greater than a preset duration threshold before indicating that the main channel of the multi-mode dual-card terminal performs network search in a set access mode according to the secondary card or a PLMN frequency point list of an operator network related to the secondary card, which is pre-stored in the multi-mode dual-card terminal, according to a determination result of the determination module.

18. A multimode dual-card terminal, characterized in that it comprises an access mode switching device according to any one of claims 9 to 17.