CN105101346A - Network selection and cell searching method and device while single-card double-standby terminal is powered on - Google Patents

Network selection and cell searching method and device while single-card double-standby terminal is powered on Download PDF

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Publication number
CN105101346A
CN105101346A CN201410215713.XA CN201410215713A CN105101346A CN 105101346 A CN105101346 A CN 105101346A CN 201410215713 A CN201410215713 A CN 201410215713A CN 105101346 A CN105101346 A CN 105101346A
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China
Prior art keywords
terminal
scdma
community
cell
search
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CN201410215713.XA
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Chinese (zh)
Inventor
梁煜
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ZTE Corp
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ZTE Corp
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Priority to CN201410215713.XA priority Critical patent/CN105101346A/en
Priority to PCT/CN2014/081044 priority patent/WO2015176355A1/en
Publication of CN105101346A publication Critical patent/CN105101346A/en
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention discloses a method and device of network selection and cell searching while a single-card double-standby terminal is powered on, and relates to the technical field of mobile communication. The method of the network selection and the cell searching comprise the following steps: searching a suitable cell of the same network according to a network cell where the terminal resides when the terminal is powered on, performing a type judgment on a terminal type when the suitable cell of the same network is searched, and enabling a circuit domain and a packet domain of the terminal to reside in different network cells according to a type judgment result. Time that the two domains search the network after power-on can be effectively saved, residing of the two domains is accelerated, and a network service is obtained, so a good user business experience is guaranteed.

Description

During the start of a kind of single deck tape-recorder double-standby terminal, network is selected and the method for Cell searching and device
Technical field
The present invention relates to mobile communication technology field, particularly during the start of a kind of single deck tape-recorder double-standby terminal, network is selected and the method for Cell searching and device.
Background technology
Along with mobile communication technology high speed development, the forth generation mobile communication technology aiming to provide high-speed data service is also more and more ripe.Domestic and ternational Mobile Telecommunications operator has started business on probation and the commercialization process of progressively promoting 4G network service.With it simultaneously, mobile communication carrier still remains the second generation and 3 G mobile communication network, thus defines the multiple communication technology simultaneously and the situation of depositing.From market angle, 2/3G network has built up the comparatively ripe network coverage thus provides the speech business of high-quality for mobile subscriber, but data service rests on low-speed range.From technical standpoint, although 4G network has incomparable high-speed data service, the networking is still immature, and inadequate to speech business supporting dynamics.
When this look that fish and bear's paw can not get both, single deck tape-recorder double-standby terminal application and give birth to, 2/3G network and 4G network integration get up by cleverly, learn from other's strong points to offset one's weaknesses, and efficiently solve the problems referred to above.Therefore, single deck tape-recorder double-standby mobile terminal while basic speech business is provided, also for user brings high-speed data service to experience.But, because single deck tape-recorder double-standby terminal needs simultaneously standby under two kinds of different network formats.When this causes starting up of terminal, need to carry out multiple frequency range simultaneously and carry out frequency sweep and Cell searching.The frequency range of 4G network has larger widening relative to the frequency range of 2/3G network, cause the frequency sweep of 4G and cell search time elongated, thus elongate terminal treat motor speed, this can affect the business experience of user.
Summary of the invention
When the object of the present invention is to provide a kind of single deck tape-recorder double-standby terminal to start shooting, network is selected and the method for Cell searching and device, solves the frequency sweep of 4G in prior art and the problem treating motor speed of longer the brought elongation terminal of cell search time.
According to an aspect of the present invention, provide a kind of method of network selection and Cell searching when single deck tape-recorder double-standby terminal is started shooting, comprise the following steps:
During starting up of terminal, according to the network cell that terminal is resident, search the suitable cell of identical network;
When finding the suitable cell of identical network, type judgement is carried out to terminal type;
According to type judged result, the circuit domain of terminal and packet domain are resided in different network cells respectively.
Preferably, described according to type judged result, the circuit domain of terminal and packet domain are resided in different network cells respectively and comprises:
According to the type judged result that terminal is I type, the circuit domain of terminal is resided in described suitable cell, the packet domain of terminal is resided in the community of other networks adjacent with described suitable cell;
According to the type judged result that terminal is II type, the packet domain of terminal is resided in described suitable cell, the circuit domain of terminal is resided in the community of other networks adjacent with described suitable cell.
Preferably, also comprise:
When not finding the suitable cell of identical network, the circuit domain of terminal and packet domain are resided in the community of other adjacent heterogeneous networks of described suitable cell respectively.
Preferably, the resident network cell of described terminal is TD-SCDMA community, and the suitable cell searching identical TD-SCDMA comprises:
During starting up of terminal, judge whether to there is resident TD-SCDMA cell information;
If judge to there is resident TD-SCDMA cell information, then specifying frequency search or specified network community ID to search for by carrying out TD-SCDMA community, searching the suitable cell of identical TD-SCDMA;
If judge there is not resident TD-SCDMA cell information, then by carrying out the frequency sweep under TD-SCDMA standard, search the suitable cell of identical TD-SCDMA.
Preferably, be the type judged result of I type according to terminal, the circuit domain of terminal resided in described suitable TD-SCDMA community, the packet domain of terminal is resided in the LTE community adjacent with described suitable TD-SCDMA community and comprise:
The circuit domain of terminal is resided in described suitable TD-SCDMA community, and obtain the LTE neighboring BS information on described TD-SCDMA Serving cell;
To described LTE adjacent area carry out appointment frequency search or designated cell ID search for, search LTE community;
When finding described LTE community, the packet domain of terminal is resided in the community of described LTE.
Preferably, be the type judged result of II type according to terminal, the packet domain of terminal resided in described suitable TD-SCDMA community, the circuit domain of terminal is resided in the GSM community adjacent with described suitable TD-SCDMA community and comprise:
The packet domain of terminal is resided in described suitable TD-SCDMA community, and obtain the GSM neighboring BS information on described TD-SCDMA Serving cell;
To described GSM adjacent area carry out appointment frequency search or designated cell ID search for, search GSM community;
When finding described GSM community, the circuit domain of terminal is resided in the community of described GSM.
According to a further aspect in the invention, provide the device of network selection and Cell searching when a kind of single deck tape-recorder double-standby terminal is started shooting, comprising:
Search module, during for starting up of terminal, according to the network cell that terminal is resident, search the suitable cell of identical network;
Judge module, for when finding the suitable cell of identical network, carries out type judgement to terminal type;
Resident module, for according to type judged result, resides in different network cells respectively by the circuit domain of terminal and packet domain.
Preferably, described resident module comprises:
First resident element, for being the type judged result of I type according to terminal, resides in the circuit domain of terminal in described suitable cell, the packet domain of terminal is resided in the community of other networks adjacent with described suitable cell;
Second resident element, for being the type judged result of II type according to terminal, residing in the packet domain of terminal in described suitable cell, the circuit domain of terminal being resided in the community of other networks adjacent with described suitable cell.
Preferably, described resident module also comprises:
3rd resident element, for when not finding the suitable cell of identical network, resides in the community of other adjacent heterogeneous networks of described suitable cell respectively by the circuit domain of terminal and packet domain.
Preferably, described module of searching comprises:
Judgment sub-unit, during for starting up of terminal, judges whether to there is resident TD-SCDMA cell information;
Search subelement, for there is resident TD-SCDMA cell information when judgement, then frequency search or specified network community ID is specified to search for by carrying out TD-SCDMA community, search the suitable cell of identical TD-SCDMA, and when judging there is not resident TD-SCDMA cell information, then by carrying out the frequency sweep under TD-SCDMA standard, search the suitable cell of identical TD-SCDMA.
Compared with prior art, beneficial effect of the present invention is:
After the present invention effectively can save start, dual domain looks for the time of net, accelerate two territories resident and obtain network service, thus ensure that better customer service is experienced, especially, under being in the scene of starting shooting for the first time or roam into strange land start in terminal, the resident and Cell searching that neighboring BS information accelerates dual domain can be effectively utilized.
Accompanying drawing explanation
The method flow diagram of network selection and Cell searching when Fig. 1 is a kind of single deck tape-recorder double-standby terminal start provided by the invention;
The device schematic diagram of network selection and Cell searching when Fig. 2 is a kind of single deck tape-recorder double-standby terminal start provided by the invention;
Fig. 3 be first embodiment of the invention provide the start of a kind of single deck tape-recorder double-standby mobile terminal time network select and the method flow diagram of Cell searching;
Fig. 4 be the embodiment of the present invention provide the start of a kind of single deck tape-recorder multi-standby mobile terminal time dual domain resident speed device schematic diagram;
Fig. 5 be second embodiment of the invention provide the start of single deck tape-recorder double-standby mobile terminal time network select and the schematic flow sheet of small region search method.
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Fig. 1 shows the method for network selection and Cell searching when a kind of single deck tape-recorder double-standby terminal provided by the invention is started shooting, and as shown in Figure 1, comprises the following steps:
Step S101: during starting up of terminal, according to the network cell that terminal is resident, searches the suitable cell of identical network;
Step S102: when finding the suitable cell of identical network, carries out type judgement to terminal type;
Step S103: according to type judged result, resides in different network cells respectively by the circuit domain of terminal and packet domain.
Specifically, described according to type judged result, the circuit domain of terminal and packet domain are resided in different network cells respectively comprise: the type judged result according to terminal being I type, the circuit domain of terminal is resided in described suitable cell, the packet domain of terminal is resided in the community of other networks adjacent with described suitable cell; According to the type judged result that terminal is II type, the packet domain of terminal is resided in described suitable cell, the circuit domain of terminal is resided in the community of other networks adjacent with described suitable cell.That is, when the type judged result that terminal is I type, the circuit domain of terminal is resided in described suitable TD-SCDMA community, the packet domain of terminal is resided in the LTE community adjacent with described suitable TD-SCDMA community to comprise: the circuit domain of terminal is resided in described suitable TD-SCDMA community, and obtain the LTE neighboring BS information on described TD-SCDMA Serving cell; To described LTE adjacent area carry out appointment frequency search or designated cell ID search for, search LTE community; When finding described LTE community, the packet domain of terminal is resided in the community of described LTE.When the type judged result that terminal is II type, the packet domain of terminal is resided in described suitable TD-SCDMA community, the circuit domain of terminal is resided in the GSM community adjacent with described suitable TD-SCDMA community to comprise: the packet domain of terminal is resided in described suitable TD-SCDMA community, and obtain the GSM neighboring BS information on described TD-SCDMA Serving cell; To described GSM adjacent area carry out appointment frequency search or designated cell ID search for, search GSM community; When finding described GSM community, the circuit domain of terminal is resided in the community of described GSM.In addition, the present invention also comprises: when not finding the suitable cell of identical network, the circuit domain of terminal and packet domain is resided in respectively in the community of other adjacent heterogeneous networks of described suitable cell.
Specifically, the resident network cell of described terminal is TD-SCDMA community, and the suitable cell searching identical TD-SCDMA comprises: during starting up of terminal, judges whether to there is resident TD-SCDMA cell information; If judge to there is resident TD-SCDMA cell information, then specifying frequency search or specified network community ID to search for by carrying out TD-SCDMA community, searching the suitable cell of identical TD-SCDMA; If judge there is not resident TD-SCDMA cell information, then by carrying out the frequency sweep under TD-SCDMA standard, search the suitable cell of identical TD-SCDMA.
Fig. 2 shows the device of network selection and Cell searching when a kind of single deck tape-recorder double-standby terminal provided by the invention is started shooting, and as shown in Figure 2, comprising: search module 201, during for starting up of terminal, according to the network cell that terminal is resident, searches the suitable cell of identical network; Judge module 202, for when finding the suitable cell of identical network, carries out type judgement to terminal type; Resident module 203, for according to type judged result, resides in different network cells respectively by the circuit domain of terminal and packet domain.Described resident module 203 comprises: the first resident element, for according to terminal being the type judged result of I type, the circuit domain of terminal is resided in described suitable cell, the packet domain of terminal is resided in the community of other networks adjacent with described suitable cell; Second resident element, for being the type judged result of II type according to terminal, resides in the packet domain of terminal in described suitable cell, the circuit domain of terminal is resided in the community of other networks adjacent with described suitable cell; 3rd resident element, for when not finding the suitable cell of identical network, resides in the community of other adjacent heterogeneous networks of described suitable cell respectively by the circuit domain of terminal and packet domain.
Module 201 of searching of the present invention comprises: judgment sub-unit, during for starting up of terminal, judges whether to there is resident TD-SCDMA cell information; Search subelement, for there is resident TD-SCDMA cell information when judgement, then frequency search or specified network community ID is specified to search for by carrying out TD-SCDMA community, search the suitable cell of identical TD-SCDMA, and when judging there is not resident TD-SCDMA cell information, then by carrying out the frequency sweep under TD-SCDMA standard, search the suitable cell of identical TD-SCDMA.
The method flow diagram of network selection and Cell searching when a kind of single deck tape-recorder double-standby mobile terminal that Fig. 3 shows first embodiment of the invention to be provided is started shooting, as shown in Figure 3, comprises the following steps:
Step 1: single deck tape-recorder double-standby mobile terminal is started shooting and entered the area of coverage;
Step 2: judge whether there is resident TD-SCDMA cell information;
If there is resident TD-SCDMA cell information, so carry out TD-SCDMA community and specified frequency search or designated cell ID to search for, and gone to step 4; If there is not resident TD-SCDMA cell information, then go to step 3;
Step 3: terminal carries out the frequency sweep under TD-SCDMA standard;
Step 4: judge whether terminal have found effective frequency and community on TD-SCDMA;
If terminal have found effective frequency and community on TD-SCDMA, if terminal is Class1, then go to step 5; If terminal is type 2, then go to step 6; If terminal does not find effective frequency and community on TD-SCDMA, then go to step 7.
Step 5: for the terminal of Class1, then carry out step below:
Step 51: resident for circuit domain to TD-SDMA community;
Step 52: terminal obtains the LTE neighboring BS information on TD-SCDMA Serving cell;
Step 53: to LTE adjacent area carry out appointment frequency search or designated cell ID search for, after finding LTE community, resident for packet domain arrive LTE community.
Step 6: for the terminal of type 2, then carry out step below:
Step 61: resident for packet domain to TD-SDMA community;
Step 62: terminal obtains the GSM neighboring BS information on TD-SCDMA Serving cell;
Step 63: to GSM adjacent area carry out appointment frequency search or designated cell ID search for, after finding GSM community, resident for circuit domain arrive GSM community.
Step 7: carry out GSM Cell searching in circuit domain, carries out LTE Cell searching in packet domain simultaneously.
Carry out GSM Cell searching in circuit domain, carry out LTE Cell searching in packet domain, reside in GSM community in circuit domain respectively afterwards, packet domain resides in TD-LTE community simultaneously.
The device schematic diagram of dual domain resident speed when a kind of single deck tape-recorder multi-standby mobile terminal that Fig. 4 shows the embodiment of the present invention to be provided is started shooting, as shown in Figure 4, comprise: look for net module: for managing frequency sweep and the Cell searching of all network formats, preferentially carry out frequency sweep and Cell searching under TD-SCDMA standard during start, after resident TD-SCDMA success, go to neighboring BS information memory module and resident module; Resident TD-SCDMA is unsuccessful, directly carries out TD-LTE and GSM network search; Resident module: for the network resident of management circuit territory and packet domain; Neighboring BS information memory module: for storing LTE and GSM neighboring BS information under TD-SCDMA community that is, look for net module to manage and all standards look for net, first first search TD-SCDMA network, after the success of search TDS network, by resident module come respectively by the circuit domain of the terminal of Class1 and type 2 and packet domain resident to TD-SCDMA network, and the LTE adjacent area of TD-SCDMA and GSM adjacent area are stored in adjacent area memory module, be supplied to and look for net module to use.
Below for the single deck tape-recorder double-standby terminal of TD-LTE/TD-SCDMA/GSM tri-mould Class1, as shown in Figure 5, embodiments of the present invention are described, certainly, the present invention is not limited to TD-LTE/TD-SCDMA/GSM tri-mould Class1 pattern.In the embodiment of TD-LTE/TD-SCDMA/GSM tri-mould Class1 single deck tape-recorder double-standby terminal, after starting up of terminal success, TD-LTE and TD-SCDMA/GSM will be simultaneously standby, TD-LTE provides high-speed data service for end packet territory, TD-SCDMA/GSM provides high quality voice service for terminating circuit territory, specifically comprises the following steps:
Step 1: single deck tape-recorder double-standby mobile terminal is started shooting and entered the area of coverage;
Step 2: judge whether terminal has existed resident TD-SCDMA cell information;
If terminal has existed resident TD-SCDMA cell information, then carry out D-SCDMA community and specified frequency search or designated cell ID to search for, and gone to step 4; If terminal exists resident TD-SCDMA cell information, then enter step 3.
Step 3: terminal carries out the frequency range frequency sweep under TD-SCDMA standard;
First the frequency range frequency sweep that terminal is carried out under TD-SCDMA standard can search for A frequency range (2010 ~ 2025MHZ);
Step 4: judge whether to find suitable TD-SCDMA community;
If find suitable TD-SCDMA community, for Class1, then enter step 5; If do not find suitable TD-SCDMA community, then go to step 6;
Step 5: by resident for circuit domain to TD-SCDMA network, in the SIB19 that terminal obtains on TD-SCDMA community after TD-LTE neighboring BS information, utilize TD-LTE neighboring BS information to carry out appointment frequency to TD-LTE or Cell searching is carried out in designated cell, successfully to find behind TD-LTE community and by resident for packet domain to TD-LTE network.
Step 6: carry out GSM Cell searching in circuit domain, carries out LTE Cell searching in packet domain simultaneously.
Carry out GSM Cell searching in circuit domain, carry out LTE Cell searching in packet domain, reside in GSM community in circuit domain respectively after search, packet domain resides in TD-LTE community simultaneously.
In sum, the present invention has following technique effect:
After the present invention effectively can save start, dual domain looks for the time of net, under being especially in the scene of starting shooting for the first time or roam into strange land start in terminal, can effectively utilize the resident and Cell searching that neighboring BS information accelerates dual domain.
Although above to invention has been detailed description, the present invention is not limited thereto, those skilled in the art of the present technique can carry out various amendment according to principle of the present invention.Therefore, all amendments done according to the principle of the invention, all should be understood to fall into protection scope of the present invention.

Claims (10)

1. a method for network selection and Cell searching when single deck tape-recorder double-standby terminal is started shooting, is characterized in that, comprise the following steps:
During starting up of terminal, according to the network cell that terminal is resident, search the suitable cell of identical network;
When finding the suitable cell of identical network, type judgement is carried out to terminal type;
According to type judged result, the circuit domain of terminal and packet domain are resided in different network cells respectively.
2. method according to claim 1, is characterized in that, described according to type judged result, the circuit domain of terminal and packet domain is resided in different network cells respectively and comprises:
According to the type judged result that terminal is I type, the circuit domain of terminal is resided in described suitable cell, the packet domain of terminal is resided in the community of other networks adjacent with described suitable cell;
According to the type judged result that terminal is II type, the packet domain of terminal is resided in described suitable cell, the circuit domain of terminal is resided in the community of other networks adjacent with described suitable cell.
3. method according to claim 1 and 2, is characterized in that, also comprises:
When not finding the suitable cell of identical network, the circuit domain of terminal and packet domain are resided in the community of other adjacent heterogeneous networks of described suitable cell respectively.
4. method according to claim 1, is characterized in that, the resident network cell of described terminal is TD-SCDMA community, and the suitable cell searching identical TD-SCDMA comprises:
During starting up of terminal, judge whether to there is resident TD-SCDMA cell information;
If judge to there is resident TD-SCDMA cell information, then specifying frequency search or specified network community ID to search for by carrying out TD-SCDMA community, searching the suitable cell of identical TD-SCDMA;
If judge there is not resident TD-SCDMA cell information, then by carrying out the frequency sweep under TD-SCDMA standard, search the suitable cell of identical TD-SCDMA.
5. method according to claim 2, it is characterized in that, according to the type judged result that terminal is I type, the circuit domain of terminal is resided in described suitable TD-SCDMA community, the packet domain of terminal is resided in the LTE community adjacent with described suitable TD-SCDMA community and comprise:
The circuit domain of terminal is resided in described suitable TD-SCDMA community, and obtain the LTE neighboring BS information on described TD-SCDMA Serving cell;
To described LTE adjacent area carry out appointment frequency search or designated cell ID search for, search LTE community;
When finding described LTE community, the packet domain of terminal is resided in the community of described LTE.
6. method according to claim 2, it is characterized in that, according to the type judged result that terminal is II type, the packet domain of terminal is resided in described suitable TD-SCDMA community, the circuit domain of terminal is resided in the GSM community adjacent with described suitable TD-SCDMA community and comprise:
The packet domain of terminal is resided in described suitable TD-SCDMA community, and obtain the GSM neighboring BS information on described TD-SCDMA Serving cell;
To described GSM adjacent area carry out appointment frequency search or designated cell ID search for, search GSM community;
When finding described GSM community, the circuit domain of terminal is resided in the community of described GSM.
7. a device for network selection and Cell searching when single deck tape-recorder double-standby terminal is started shooting, is characterized in that, comprising:
Search module, during for starting up of terminal, according to the network cell that terminal is resident, search the suitable cell of identical network;
Judge module, for when finding the suitable cell of identical network, carries out type judgement to terminal type;
Resident module, for according to type judged result, resides in different network cells respectively by the circuit domain of terminal and packet domain.
8. device according to claim 7, is characterized in that, described resident module comprises:
First resident element, for being the type judged result of I type according to terminal, resides in the circuit domain of terminal in described suitable cell, the packet domain of terminal is resided in the community of other networks adjacent with described suitable cell;
Second resident element, for being the type judged result of II type according to terminal, residing in the packet domain of terminal in described suitable cell, the circuit domain of terminal being resided in the community of other networks adjacent with described suitable cell.
9. the device according to claim 7 or 8, is characterized in that, described resident module also comprises:
3rd resident element, for when not finding the suitable cell of identical network, resides in the community of other adjacent heterogeneous networks of described suitable cell respectively by the circuit domain of terminal and packet domain.
10. device according to claim 7, is characterized in that, described module of searching comprises:
Judgment sub-unit, during for starting up of terminal, judges whether to there is resident TD-SCDMA cell information;
Search subelement, for there is resident TD-SCDMA cell information when judgement, then frequency search or specified network community ID is specified to search for by carrying out TD-SCDMA community, search the suitable cell of identical TD-SCDMA, and when judging there is not resident TD-SCDMA cell information, then by carrying out the frequency sweep under TD-SCDMA standard, search the suitable cell of identical TD-SCDMA.
CN201410215713.XA 2014-05-21 2014-05-21 Network selection and cell searching method and device while single-card double-standby terminal is powered on Withdrawn CN105101346A (en)

Priority Applications (2)

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CN201410215713.XA CN105101346A (en) 2014-05-21 2014-05-21 Network selection and cell searching method and device while single-card double-standby terminal is powered on
PCT/CN2014/081044 WO2015176355A1 (en) 2014-05-21 2014-06-27 Method and apparatus for selecting network and searching for cell by single-card dual-standby terminal when terminal is powered on

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