CN104994487A - Mobile terminal and call switching method for multi-card multi-standby mobile terminal - Google Patents
Mobile terminal and call switching method for multi-card multi-standby mobile terminal Download PDFInfo
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- CN104994487A CN104994487A CN201510416951.1A CN201510416951A CN104994487A CN 104994487 A CN104994487 A CN 104994487A CN 201510416951 A CN201510416951 A CN 201510416951A CN 104994487 A CN104994487 A CN 104994487A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to the field of communication technologies, and discloses a mobile terminal and a call switching method for a multi-card multi-standby mobile terminal. At least two SIM cards operating at different frequency bands are inserted in the multi-card multi-standby mobile terminal, and the call switching method comprises the steps of detecting received signal strength of all SIM cards when the mobile terminal receives a call request for the first SIM card; and switching the call request for the first SIM card to the second SIM card when the received signal strength of the first SIM card is less than that of other SIM cards, wherein the second SIM card is one of the other SIM cards with received signal strength greater than that of the first SIM card. Compared with the prior art, the call switching method for the multi-card multi-standby mobile terminal allows the request for the SIM card with weak received signal strength to be switched to the SIM card with high received signal strength in real time, thereby reducing radiation to human body; in addition, the mobile terminal can set call transfer without monitoring the received signal strength of all SIM cards in real time, thereby reducing work tasks of the mobile terminal and saving power consumption of the mobile terminal.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of call handover method of multi-card multi-standby mobile terminal and mobile terminal.
Background technology
Generally speaking, when two users converse, need to establish call connection between the SIM card (Subscriber Identity Module, subscriber identification card) inserted in its respective mobile terminal.Call connection Establishing process comprises caller SIM card access phase and called SIM card access phase.Caller sends call request, the base station of being registered by caller is to base station control center, mobile switching centre's request access, until caller access, then, mobile calls center, can be same mobile calls center or different mobile calls center, pass through base station control center, the base station calling of called registration is called, successfully accesses until called.
But, the technology adopted due to domestic mobile communication carrier is different, the Base communication facility (such as base station) of each operator is different and be limited to the impact of natural conditions etc., the phenomenon ubiquity that in zones of different, the quorum sensing inhibitor of different operators is strong and weak different.When user converses when signal strength signal intensity is poor, not only larger radiation is produced to human body, and have a strong impact on speech quality, very easily call drop, bring great inconvenience to user.
Based on the needs of business contact, the use of multi-card multi-standby mobile terminal is very general.Different from the harmful effect brought of conversing in order to overcome network signal intensity, also there is technical scheme SIM card lower for signal strength signal intensity being switched to the higher SIM card of signal strength signal intensity.Such as, the Chinese invention patent of notification number: 102118718A discloses a kind of mobile terminal automatic call transferring method and mobile terminal.The automatic call transferring method of mobile terminal comprises the following steps: step a, opens automatic call forwarding function; Step b, reads and stores card number information and the telephone number information of two Subscriber Identity Modules; Step c, the network signal intensity of monitoring two Subscriber Identity Modules; Steps d, when the network signal intensity of two Subscriber Identity Modules presets low valve valve lower than one, arranges the call of the Subscriber Identity Module of low for network signal intensity correspondence and transfers to the high corresponding Subscriber Identity Module of network signal intensity.As can be seen here, the network signal receiving intensity that this kind of technical scheme needs Real-Time Monitoring respectively to block, and call forwarding is set further, to realize the switching blocked, and real time monitoring network signal strength signal intensity adds the task of mobile terminal undoubtedly, further, setting also adds unnecessary burden to network with cancellation call forwarding frequently.
Summary of the invention
The object of the present invention is to provide a kind of call handover method and mobile terminal of multi-card multi-standby mobile terminal, make to switch to signal receiving strength preferably SIM card in real time to the calling of the poor SIM card of signal receiving strength, thus, reduce the radiation to human body, improve speech quality; Further, mobile terminal to arrange call forwarding, and then can reduce the task of mobile terminal without the need to the signal receiving strength that respectively blocked by Real-Time Monitoring, saves mobile terminal electric quantity consumption.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of call handover method of multi-card multi-standby mobile terminal, are inserted with the SIM card that at least two are operated in different frequency range in described multi-card multi-standby mobile terminal; Described call handover method comprises following steps: when mobile terminal receives the call request of the first SIM card, detect the received signal strength of all SIM card; If the received signal strength of the first SIM card is less than the received signal strength of other SIM card, be then switched to the second SIM card by the call request of the first SIM card; Wherein, the second SIM card is one that received signal strength is greater than in other SIM card of the first SIM card.
Embodiments of the present invention additionally provide a kind of mobile terminal, comprising: at least two SIM card being operated in different frequency range, receiver module, signal detection module, judge module and access module; Receiver module is for receiving the call request of the first SIM card; Signal detection module, for when described first SIM card receives call request, detects the signal receiving strength of described each SIM card; Judge module, for judging whether the signal receiving strength of described first SIM card is less than the signal receiving strength of other SIM card; Access module is used for when the signal receiving strength of described first SIM card is less than the signal receiving strength of other SIM card, is switched to the second SIM card by the call request of a described SIM; Wherein, described second SIM card is one that received signal strength is greater than in other SIM card of the first SIM card.
Embodiment of the present invention in terms of existing technologies, when receiving the call request to the first SIM card, detect the signal receiving strength of each SIM card, and when the signal receiving strength of the first SIM card is less than other SIM card, switch to the second SIM card by the calling of the first SIM card, thus, the radiation to human body can be reduced, improve speech quality; Further, present embodiment to arrange call forwarding, is conducive to the power consumption saving mobile terminal without the need to the signal receiving strength of each SIM card of Real-Time Monitoring.
Preferably, after the step of received signal strength detecting all SIM card, before judging whether the received signal strength of the first SIM card is less than the step of the received signal strength of other SIM card, also comprise following steps: judge that whether the received signal strength of described first SIM card is lower than a predetermined threshold value, if so, then judge whether the received signal strength of the first SIM card is less than the received signal strength of other SIM card further.Thus, only when the signal receiving strength of the first SIM card is poor, just switch, both ensure that speech quality, the number of times that calling switches can be reduced again.
Preferably, described second SIM card is the SIM card that in other SIM card except the first SIM card, received signal strength is maximum.Thus, farthest ensure speech quality, reduce the radiation to human body.
Preferably, the call request of described first SIM card is that the first SIM card is as called call request; Be switched to the call request of the first SIM card in the step of the second SIM card, comprising following sub-step: returning calling handover information to call center; After call center receives described calling handover information, the call request of the first SIM card will be switched to the call request to the second SIM card.Thus, calling can be completed switch within the extremely short time.
Preferably, described call center comprises first call center corresponding with the first SIM card and second call center corresponding with the second SIM card; In the step returning calling handover information to call center, return calling handover information to described first call center; Switching to the call request of the first SIM card in the step to the call request of the second SIM card, comprising following sub-step: the first call center is resolving described calling handover information, obtaining the second call center that the second SIM card is corresponding; Call request continues to the second call center by the first call center.Thus, ensure that calling switching can complete smoothly.
Preferably, the information of the second SIM card is carried in described calling handover information.Thus, be conducive in real time calling being switched to the best SIM card of signal receiving strength.
Preferably, the SIM card that 2 are operated in different frequency range is inserted with in described multi-card multi-standby mobile terminal; The targeted SIM card information of heart stored calls switching in a call in advance; In the step returning calling handover information to call center, described calling handover information only comprises calling switching command.Thus, the size of calling out switching command can be reduced, ensure the timeliness of calling switching command transmission.
Accompanying drawing explanation
Fig. 1 is the flow chart of the call handover method of multi-card multi-standby mobile terminal according to first embodiment of the invention;
Fig. 2 is the structural representation of the mobile terminal according to second embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the embodiments of the present invention are explained in detail.But, persons of ordinary skill in the art may appreciate that in each execution mode of the present invention, proposing many ins and outs to make reader understand the application better.But, even without these ins and outs with based on the many variations of following execution mode and amendment, each claim of the application technical scheme required for protection also can be realized.
First execution mode of the present invention relates to a kind of call handover method of multi-card multi-standby mobile terminal, is inserted with the SIM card that at least two are operated in different frequency range in multi-card multi-standby mobile terminal.Mobile terminal in present embodiment can be the smart mobile phone being inserted with multiple SIM card, and the operator of each SIM card can be China Mobile, CHINAUNICOM, China Telecom or virtual operator etc.Now be inserted with three SIM cards for mobile terminal to be described, three SIM cards are such as respectively the telecommunications SIM card of the mobile SIM card of China Mobile, UNICOM's SIM card of CHINAUNICOM and China Telecom, wherein moving SIM card is the first SIM card in present embodiment, and UNICOM's SIM card or telecommunications SIM card are the second SIM card.Should be appreciated that it is only illustrate multi-card multi-standby mobile terminal herein, the quantity of present embodiment to the SIM card inserted in mobile terminal does not impose any restrictions.The idiographic flow of this call handover method as shown in Figure 1, comprises following steps:
Step 10, judges whether mobile terminal receives the call request of the first SIM card, if so, then performs step 11; If not, then step 10 is returned.
Generally speaking, in call connection process of establishing, call request is sent by calling party, after caller access, call center MSC (Mobile Switching Center, mobile handoff center, be called for short MSC) continue the called SIM card of paging, namely the first SIM card in present embodiment, first SIM card register via it base station, communicate between base station controller with MSC, consult in the process accessed in the first SIM card and MSC, the base station that mobile terminal is registered in response to it, and ask base station to be that it distributes call resource.Therefore, can from mobile terminal request base station for its distribute call resource, enter step 11.
Step 11, detects the received signal strength of all SIM card.
The signal receiving strength of each SIM card in mobile terminal, can be obtained by reading RSSI value (ReceivedSignal Strength Indication is called for short RSSI), such as, can be read the RSSI value of each SIM card by software.
Step 12, judges that whether the received signal strength of the first SIM card is lower than a predetermined threshold value.If so, then step 14 is entered; If not, then step 13 is entered.
When the RSSI value of the first SIM card, when received signal strength is better, such as, current RSSI value is 90% of RSSI value maximum, and the pre-set threshold value of RSSI value is 70% of RSSI value maximum, then the signal receiving strength of the first SIM card is higher than pre-set threshold value, enter step 14, otherwise, if current RSSI value is 30% of RSSI value maximum, lower than pre-set threshold value, then enter step 14.
Step 13, the first SIM card call accepted request also continues to establish call connection.
Step 14, judges whether the received signal strength of the first SIM card is less than the received signal strength of other SIM card.If so, then step 15 is entered; If not, then step 13 is entered.
Compare by the RSSI value of the first SIM card and the RSSI value of other two SIM cards.Then comparative result may be the one in following three kinds of situations:
1, suppose the RSSI value of the RSSI value of mobile SIM card (the first SIM card) higher than UNICOM's SIM card and telecommunications SIM card, be then judged as that the received signal strength of the first SIM card is greater than the received signal strength of other SIM card, now, enter step 13.
2, the RSSI value of the RSSI value of mobile SIM card higher than UNICOM's SIM card is supposed, and lower than the RSSI value of telecommunications SIM card, be then judged as that the RSSI value of the first SIM card is less than the received signal strength of other SIM card, wherein, namely telecommunications SIM card as the second SIM card in present embodiment, enters step 15.
3, suppose the RSSI value of the RSSI value of mobile SIM card lower than UNICOM and telecommunications SIM card, then judge that the received signal strength of the first SIM card is less than the received signal strength of other SIM card, and using UNICOM or telecommunications SIM card as the second SIM card, enter step 15.Wherein, the second SIM card is the SIM card that in other SIM card except the first SIM card, received signal strength is maximum, such as, when the RSSI value of UNICOM's SIM card is greater than the RSSI value of telecommunications SIM card, adopts UNICOM's SIM card as the second SIM card; Otherwise, adopt telecommunications SIM card as the second SIM card.
It should be noted that, when the RSSI value of the first SIM card and the RSSI value of other SIM card are compared, difference between the two and the difference threshold preset can be compared simultaneously, this difference threshold can be such as the 10-20% of RSSI value maximum, namely be, when the received signal strength difference of the first SIM card and other SIM card is little, comparative result is done and is not more than or is not less than process, such as, the received signal strength of the first SIM card is 5% of RSSI value maximum lower than the difference of in other SIM card, can think that the received signal strength of the first SIM card is not less than this SIM card.Thus can reduce reducing radiation, improving the number of times of unconspicuous calling switching such as the raising effect of speech quality etc., it is intelligent that raising calling switches.
Step 15, is switched to the second SIM card by the call request of the first SIM card.Specifically, step 15 comprises sub-step 151-sub-step 152:
Sub-step 151, returns calling handover information to call center, carry the information of the second SIM card in calling handover information.The information of such as the second SIM card can be user identity identification number, is exactly common 13xxxxxxxxx.
Sub-step 152, call center will switch to the call request to the second SIM card after receiving calling handover information to the call request of the first SIM card.
The second SIM card in present embodiment may belong to different MSC respectively from the first SIM card.Such as, call center comprises first call center corresponding with the first SIM card and second call center corresponding with the second SIM card, in the step returning calling handover information to call center, namely in sub-step 151, return calling handover information to the first call center.Switching in the step to the call request of the second SIM card by the call request of the first SIM card, namely in sub-step 152, comprising following sub-step:
First call center resolves calling handover information, obtains the second call center that the second SIM card is corresponding.Call request continues to the second call center by the first call center.Namely continue paging second SIM card by the second call center, and second its own base station of SIM card request, base station controller and the second call center distribute for it resource of conversing, and access this call connection, thus set up the call between caller SIM card.It should be noted that, MSC in the broadest sense, refers to the virtual unit carrying out Call Transfer, Call-Control1 between the terminals, narrow sense, such as, can refer to, the call center of each Self management of operator.
Step 16: the second SIM card call accepted request also continues to establish call connection.The second SIM card by mobile terminal accesses in this call connection as called SIM card, and complete call connection and to go forward side by side the words that work, its call connection process similarly to the prior art, does not repeat them here.
The process set up due to whole call connection generally about the several seconds time can complete, and the mobile terminal of present embodiment is after receiving the call request to the first SIM card, before conversing resource for its distribution to base station requests, first perform the flow process of present embodiment, judge that whether the signal strength signal intensity of current called SIM card belonging network is enough strong, if strong not, then do not distribute call resource to base station requests, but the information of another card is switched to base station feedback, make call center continue calling another card.It is switching time from receiving the call request of the first SIM card to sending calling switching command, this switching time is Millisecond, therefore the time effects set up whole call connection is very little, namely, in user's situation inconspicuous, mobile terminal can realize being established call connection conversed by the second SIM card after switching.
Present embodiment in terms of existing technologies, when receiving the call request to the first SIM card, by detecting the signal receiving strength of each SIM card, and when the signal receiving strength of the first SIM card is less than other SIM card, switch to the second SIM card by the calling of the first SIM card, stronger the sticking into of signal can be selected to work words, thus radiation to human body can be reduced, improve speech quality; Further, present embodiment to arrange call forwarding, is conducive to the power consumption saving mobile terminal without the need to the signal receiving strength of each SIM card of Real-Time Monitoring.
It should be noted that, judge whether mobile terminal receives the call request of the first SIM card in step 10, this call request can also be the situation using mobile SIM card (the first SIM card) as caller.Such as, when mobile terminal detects and uses mobile SIM card to dial, obtain called customer identification number immediately, and perform step 11-step 14, namely the received signal strength of mobile SIM card is detected, and when the received signal strength of the mobile SIM card determined is lower than the threshold value preset, continue the received signal strength and the UNICOM that relatively move SIM card, the received signal strength of telecommunications SIM card, and when the received signal strength determining mobile SIM card is less than the received signal strength of UNICOM or telecommunications SIM card, the call request of the first SIM card (mobile SIM card) is switched to the second SIM card, by UNICOM or telecommunications SIM card as the request of making a call of the second SIM card, so far, complete call request switch step.Then, the second SIM card continues calling called subscriber identifier, until call connection has been set up, conversed etc., has established call connection as prior art, repeat no more with the second SIM card for caller.Extremely short owing to completing call request request switching required time, so the call request of the first SIM card can be cancelled within the extremely short time, the calling procedure that the second SIM card is follow-up can not be affected.And, if the received signal strength of the first SIM card is greater than predetermined threshold value or higher than other two SIM cards, the call request of the first SIM card can continue, therefore, whole process can not have influence on the fluency of calling, further, user can be made always to use the good network of signal to converse.
It is worth mentioning that, the SIM card that two work in different frequency range only can also be inserted with in mobile terminal in present embodiment, and can in advance in a call heart stored calls switch targeted SIM card information, namely when needs carry out calling switching, when the heart is preset in and receives switching command in a call, first SIM card switches to the second SIM card, and the second SIM card switches to the first SIM card.Correspondingly, in the step returning calling handover information to call center, namely in sub-step 151, calling handover information only comprises calling switching command.Thus, the size of calling out switching command can be reduced, ensure the ageing of calling switching command transmission.
The step of various method divides above, just in order to be described clearly, can merge into a step or splitting some step, being decomposed into multiple step, when realizing as long as comprise identical logical relation, all in the protection range of this patent; To adding inessential amendment in algorithm or in flow process or introducing inessential design, but the core design not changing its algorithm and flow process is all in the protection range of this patent.
Second embodiment of the invention relates to a kind of mobile terminal, as shown in Figure 2, comprises at least two SIM card being operated in different frequency range, receiver module, signal detection module, judge module and handover modules.
Specifically, each SIM card, such as the first SIM card, the second SIM card are connected to receiver module, and receiver module is for receiving the call request of the first SIM card.Receiver module is connected to signal detection module, and when receiving the call request of the first SIM card, triggering signal detection module.
Signal detection module, during for receiving the call request of the first SIM card at receiver module, detects the signal receiving strength of each SIM card.And export the signal receiving strength of each SIM card detected to judge module.
Judge module comprises threshold value comparison sub-module and signal comparison sub-module.Threshold value comparison sub-module judges that whether the received signal strength of the first SIM card is lower than a predetermined threshold value, and when the received signal strength of judgement first SIM card is lower than a predetermined threshold value, triggering signal comparison sub-module judges whether the received signal strength of the first SIM card is less than the received signal strength of other SIM card.Signal comparison sub-module, when the received signal strength of the first SIM card is less than the received signal strength of other SIM card, triggers handover module.
Handover module is used for the call request of a SIM to be switched to the second SIM card.Wherein, the second SIM card is one that received signal strength is greater than in other SIM card of the first SIM card, and such as, the second SIM card is the SIM card that in other SIM card except the first SIM card, received signal strength is maximum.
Present embodiment compared with prior art, when receiving the call request of the first SIM card, signal detection module detects the received signal strength of each SIM card, and when received signal strength lower than other SIM card of the received signal strength of the first SIM card, the second SIM card is switched to by the calling of the first SIM card, stronger the sticking into of signal can be selected to work words, thus, the radiation of mobile terminal to human body can be reduced, and, without the need to the received signal strength of each SIM card of Real-Time Monitoring, decrease the task of mobile terminal, be conducive to the electric quantity consumption saving mobile terminal.
Be not difficult to find, present embodiment is the terminal embodiment corresponding with the first execution mode, and present embodiment can be worked in coordination with the first execution mode and be implemented.The relevant technical details mentioned in first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the relevant technical details mentioned in present embodiment also can be applicable in the first execution mode.
It is worth mentioning that, each module involved in present embodiment is logic module, and in actual applications, a logical block can be a physical location, also can be a part for a physical location, can also realize with the combination of multiple physical location.In addition, in order to outstanding innovative part of the present invention, the unit not too close with solving technical problem relation proposed by the invention is not introduced in present embodiment, but this does not show the unit that there is not other in present embodiment.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above realize specific embodiments of the invention, and in actual applications, various change can be done to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. a call handover method for multi-card multi-standby mobile terminal, is characterized in that, is inserted with the SIM card that at least two are operated in different frequency range in described multi-card multi-standby mobile terminal;
Described call handover method comprises following steps:
When mobile terminal receives the call request of the first SIM card, detect the received signal strength of all SIM card;
If the received signal strength of the first SIM card is less than the received signal strength of other SIM card, then the call request of the first SIM card is switched to the second SIM card; Wherein, the second SIM card is one that received signal strength is greater than in other SIM card of the first SIM card.
2. call handover method according to claim 1, it is characterized in that, after the step of received signal strength detecting all SIM card, before judging whether the received signal strength of the first SIM card is less than the step of the received signal strength of other SIM card, also comprise following steps:
Judge that whether the received signal strength of described first SIM card is lower than a predetermined threshold value, if so, then judges whether the received signal strength of the first SIM card is less than the received signal strength of other SIM card further.
3. call handover method according to claim 1, is characterized in that, described second SIM card is the SIM card that in other SIM card except the first SIM card, received signal strength is maximum.
4. call handover method according to claim 1, is characterized in that, the call request of described first SIM card is that the first SIM card is as called call request;
The call request of the first SIM card is being switched in the step of the second SIM card, is comprising following sub-step:
Calling handover information is returned to call center;
After call center receives described calling handover information, the call request of the first SIM card will be switched to the call request to the second SIM card.
5. call handover method according to claim 4, is characterized in that, described call center comprises first call center corresponding with the first SIM card and second call center corresponding with the second SIM card;
In the step returning calling handover information to call center, return calling handover information to described first call center;
Switching to the call request of the first SIM card in the step to the call request of the second SIM card, comprising following sub-step:
First call center resolves described calling handover information, obtains the second call center that the second SIM card is corresponding;
Call request continues to the second call center by the first call center.
6. the call handover method according to claim 4 or 5, is characterized in that, carries the information of the second SIM card in described calling handover information.
7. the call handover method according to claim 4 or 5, is characterized in that, is inserted with the SIM card that 2 are operated in different frequency range in described multi-card multi-standby mobile terminal;
The targeted SIM card information of heart stored calls switching in a call in advance;
In the step returning calling handover information to call center, described calling handover information only comprises calling switching command.
8. a mobile terminal, is characterized in that, comprising: at least two SIM card being operated in different frequency range, receiver module, signal detection module, judge module and handover module;
Receiver module is for receiving the call request of the first SIM card;
Signal detection module, for when described receiver module receives the call request of the first SIM card, detects the signal receiving strength of described each SIM card;
Judge module, for the signal receiving strength detected according to described signal detection module, judges whether the signal receiving strength of described first SIM card is less than the signal receiving strength of other SIM card;
Handover module, for when described judge module judges that the signal receiving strength of described first SIM card is less than the signal receiving strength of other SIM card, is switched to the second SIM card by the call request of a described SIM; Wherein, described second SIM card is one that received signal strength is greater than in other SIM card of the first SIM card.
9. mobile terminal according to claim 8, is characterized in that, described judge module comprises threshold value comparison sub-module and signal comparison sub-module;
Described threshold value comparison sub-module is used for the signal receiving strength detected according to described signal detection module, judge that whether the received signal strength of described first SIM card is lower than a predetermined threshold value, and when the received signal strength of judgement first SIM card is lower than a predetermined threshold value, triggers described signal comparison sub-module and judge whether the received signal strength of described first SIM card is less than the received signal strength of other SIM card.
10. mobile terminal according to claim 8, is characterized in that, described second SIM card is the SIM card that in other SIM card except the first SIM card, received signal strength is maximum.
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| WO2017113527A1 (en) * | 2015-12-31 | 2017-07-06 | 宇龙计算机通信科技(深圳)有限公司 | Method and device for switching virtual sim card, and terminal |
| CN107396415A (en) * | 2017-09-01 | 2017-11-24 | 北京小米移动软件有限公司 | The communication means and terminal of dual-card intelligent terminal |
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| CN112073999A (en) * | 2020-08-24 | 2020-12-11 | 浙江大华技术股份有限公司 | Communication terminal, vehicle-mounted terminal and network switching method thereof |
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| CN113438611A (en) * | 2021-06-11 | 2021-09-24 | 深圳市修远文化创意有限公司 | Network automatic switching method of multiple SIM cards and related device |
| CN113678524A (en) * | 2021-07-09 | 2021-11-19 | 北京小米移动软件有限公司 | Information transmission method, paging limitation method, information transmission apparatus, paging limitation apparatus, communication apparatus, and storage medium |
| CN113678524B (en) * | 2021-07-09 | 2023-09-19 | 北京小米移动软件有限公司 | Information transmission, paging limiting method and device, communication device and storage medium |
| CN115278648A (en) * | 2021-09-14 | 2022-11-01 | 中国联合网络通信集团有限公司 | Service bearer switching method and device |
| CN115278648B (en) * | 2021-09-14 | 2024-03-29 | 中国联合网络通信集团有限公司 | Service carrier switching method and device |
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