CN101932084B - Network selection method for double-mode terminal and double-mode terminal - Google Patents
Network selection method for double-mode terminal and double-mode terminal Download PDFInfo
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Abstract
The invention relates to the field of communication, and discloses a network selection method for a double-mode terminal and a double-mode terminal. In the invention, in the network selection process of the double-mode terminal, the access technologies of two network systems supported by the double-mode terminal are completely separated, and the network selection process is concurrently initiated in the first network system and the second network system, thereby respectively completing network selection under the condition of a single access technology. The two access technologies are separated, so that the network selection process can be conducted under the condition of a single access technology all the time, thereby effectively shortening the network selection time and residing in the cell capable of providing normal services as quickly as possible. Meanwhile, the access technologies of the two network systems are completely separated, thereby preventing continuous alternation between two access technologies in the network selection process of the double-mode terminal and enhancing the stability of the device.
Description
Technical field
The present invention relates to the communications field, particularly the dual-mode terminal technology in the communications field.
Background technology
Development along with the communication technology, various types of wireless communication systems have appearred, such as global system for mobile communications (Global System for Mobile communication, be called for short " GSM "), Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, be called for short " WCDMA "), TD SDMA (Time Division Synchronous Code Division MultipleAccess, be called for short " TD-SCDMA "), micro-wave access to global intercommunication (WorldwideInteroperability for Microwave Access, be called for short " WiMAX "), Long Term Evolution (LongTerm Evolution is called for short " LTE ") etc.
At present, many terminals (such as mobile phone) all can be supported two kinds of wireless systems (or wireless standard), as not only supporting GSM but also support TD-SCDMA.The terminal of two kinds of wireless systems of this support is commonly referred to dual-mode terminal.Support that about portable terminal the technical scheme of multiple wireless system can be 11136547 United States Patent (USP) referring to the patent No..
The network selection of GSM/TD-SCDMA dual-mode terminal can be divided into the network selection under the automatic network selection mode, and the network selection under the manual network preference pattern.In China's existing communication industry standard " China Mobile's company standard terminal network selection specification requirement ", 2 kinds of network selection patterns to the GSM/TD-SCDMA dual-mode terminal have provided respectively basic implementation procedure.
Wherein, basic realization flow is as follows under the automatic network selection mode:
(1) dual-mode terminal is initiated network selection with the PLMN (Public LandsMobile Network is called for short " PLMN ") of the limit priority of record and the combination (being the PLMN/ access technology) of access technology;
(2) under this PLMN/ access technology the residential quarter that regular traffic can be provided is arranged, then resident;
(3) cover without such residential quarter, all PLMN tabulations that exist the residential quarter to cover under the current access technology are listed in then network selection failure, sort by priority rear preservation;
(4) continue to select the PLMN/ access technology combination of next time priority to carry out network selection;
(5) if the access technology in this combination is identical with access technology in the step (1), and find can be normally resident residential quarter, then network selection is successfully got back to step (2), otherwise, the step of repeating step (3)
(6) if different in the access technology in access technology and the step (1) in this combination, then switch to all residential quarters of searching under another access technology under this PLMN, repeating step (1).
Realization flow basic under the manual network preference pattern is as follows:
After the full range search, list all and have PLMN corresponding to residential quarter under (1) access technology;
(2) switch to again full range search under another access technology, list PLMN corresponding to all residential quarters under another access technology;
(3) be listed as to the user selective with searching all PLMN that net obtains for twice.
Yet, the present inventor finds, in existing technology, after the GSM/TD-SCDMA dual-mode terminal need to sequence order to all network No.s according to priority, some network No.s of all supporting for two kinds of access technologies of GSM and TD-SCDMA wherein, whether a kind of access technology under can normally resident, if attempt unsuccessfully, reattempt once with same network No. under another access technology again if needing to attempt first wherein; When searching net, dual-mode terminal needs serial to travel through one by one the access technology of all supports at present.Namely for automatic network selection mode, if network environment is complicated, need to switch at least under TD-SCDMA and two kinds of access technologies of GSM once could be normally resident; And for the manual network preference pattern, then all need to travel through respectively at every turn and just can report the PLMN tabulation after two access technologies.Although such network selection mode meets the network selection standard, the alternately network selection under two kinds of access technologies has increased the duration of network selection, and the user loses called probability and strengthens.
Summary of the invention
The object of the present invention is to provide a kind of dual-mode terminal network selection method and dual-mode terminal, to shorten the network selection time, the performance of dual-mode terminal is improved in resident residential quarter to regular traffic can be provided as early as possible.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of dual-mode terminal network selection method, comprise following steps:
Dual-mode terminal is when the needs network selection, if network selection is the network selection under the automatic network selection mode, then dual-mode terminal is in the initiation network selection process that walks abreast under the first network system and under the second network system;
If network selection is the network selection under the manual network preference pattern, then dual-mode terminal is searched network process in the initiation that walks abreast under the first network system and under the second network system, find containing the PLMN that the residential quarter covers under the first network system and under the second network system, containing the PLMN that the residential quarter covers, for user selection PLMN to be accessed;
Wherein, first network system and second network system are two kinds of network systems that dual-mode terminal is supported.
Embodiments of the present invention also provide a kind of dual-mode terminal, comprise the first network selection module, the second network selection module and judge module;
The first network selection module is used for the network selection under the first network system, and the second network selection module is used for the network selection under the second network system, and wherein, first network system and second network system are two kinds of network systems that dual-mode terminal is supported;
Judge module is used for when dual-mode terminal needs network selection, judge that whether current be network selection under the automatic network selection mode, if be the network selection under the automatic network selection mode, then indicate the first network selection module and the second network selection module parallel network selection process of initiating under each self-corresponding network system; If judge module judges that current is not network selection under the automatic network selection mode, then indicate the parallel initiation under each self-corresponding network system of the first network selection module and the second network selection module to search network process, find containing the PLMN that the residential quarter covers under the first network system and under the second network system, containing the PLMN that the residential quarter covers, for user selection PLMN to be accessed.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:
Dual-mode terminal is when network selection, and the access technology of two kinds of network systems that dual-mode terminal is supported is separated fully, initiating concurrently the network selection process under the first network system He under the second network system, finishes separately the network selection under the single access technology.By two kinds of access technologies are separated, so that the network selection flow process can be carried out under a single access technology all the time, the network configuration of complexity so no matter, under every kind of access technology, general twice network selection of maximum needs just can find suitable residential quarter resident, shortened the network selection time, as early as possible resident residential quarter to regular traffic can be provided.Simultaneously, because the access technology of two kinds of network systems is separated fully, between two access technologies, ceaselessly replace when having avoided the dual-mode terminal network selection, thereby increased the stability of equipment.
Further, in parallel each network selection process of initiating, search under the corresponding network system of network selection process, the PLMN that priority is the highest, and the PLMN the highest according to this priority initiate network selection; If the network selection success then finishes the network selection process; If network selection is unsuccessful, then obtain under the corresponding network system of network selection process, contain the PLMN that the residential quarter covers, according to the highest PLMN of PLMN medium priority that gets access to, initiate network selection.Since roughly the same with existing network selection process, therefore can be so that the present invention can be compatible better with prior art.
Further, in the situation of automatic network selection, dual-mode terminal is the PLMN of network selection success under the PLMN of resident network selection success under the first network system and the second network system respectively; In the situation of manual network selection, the resident PLMN to user selection of dual-mode terminal, if the PLMN of user selection belongs to the first network system, then dual-mode terminal maintains the resident state under the second network system, if the PLMN of user selection belongs to the second network system, then dual-mode terminal maintains the resident state under the first network system.So that dual-mode terminal can be fully independent at resident under the first network system and under the second network system, real realize two treating.
Description of drawings
Fig. 1 is the dual-mode terminal network selection method flow chart according to first embodiment of the invention;
Fig. 2 is according to the network selection flow chart under the parallel GSM that initiates in the first embodiment of the invention;
Fig. 3 is according to the flow chart of searching network process in the first embodiment of the invention in the initiation that walks abreast under the GSM and under the TD-SCDMA;
Fig. 4 is the structural representation according to the dual-mode terminal of second embodiment of the invention.
Embodiment
In the following description, in order to make the reader understand the application better many ins and outs have been proposed.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on many variations and the modification of following each execution mode, also can realize each claim of the application technical scheme required for protection.
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing embodiments of the present invention are described in further detail.
First embodiment of the invention relates to a kind of dual-mode terminal network selection method.Fig. 1 is the schematic flow sheet of this dual-mode terminal network selection method.In the present embodiment, two kinds of network systems that dual-mode terminal is supported are respectively GSM and TD-SCDMA, and the first network system is GSM, and the second network system is TD-SCDMA.
In step 110, dual-mode terminal judges that whether current network selection is the network selection under the automatic network selection mode, if the network selection under the automatic network selection mode then enters step 120 when the needs network selection; If current network selection is not the network selection under the automatic network selection mode, namely current network selection is the network selection under the manual network preference pattern, then enters step 130.
In step 120, dual-mode terminal is in the parallel network selection process of initiating under the first network system and under the second network system, and with the PLMN of preferential network selection success, as PLMN to be accessed.Parallel 2 network selection processes initiating are basic identical, and difference only is that corresponding network system is different, in the present embodiment, take the network selection process of corresponding GSM network system as example, the parallel network selection process of initiating are elaborated.
The network selection process of corresponding GSM network system in step 210, is searched under the corresponding network system of network selection process (being GSM) as shown in Figure 2, and the PLMN that priority is the highest, and the PLMN the highest according to this priority initiate network selection.The precedence information that it will be understood by those skilled in the art that PLMN sets in advance in dual-mode terminal, and therefore, the obtain manner of PLMN precedence information belongs to existing known technology, repeats no more in the present embodiment.
Then, in step 220, judge whether the network selection under the GSM is successful, if network selection is unsuccessful, then enter step 230; If the network selection success then enters step 250.
In step 230, because the network selection under the GSM is not yet successful, that is to say, under the priority topnotch PLMN without any residential quarter, therefore in this step, search the PLMN tabulation (PLMN that finds can represent by the mode of tabulation) that contains the residential quarter under the GSM and cover, and with the PLMN tabulation that the finds preservation of according to priority sorting.
Then, in step 240, in the PLMN tabulation that obtains in step 230, the PLMN that the PLMN medium priority is the highest initiates network selection, and gets back to step 220, judges whether the network selection under the GSM is successful.
Because each PLMN in the PLMN tabulation contains the PLMN that the residential quarter covers under the GSM that finds, therefore under normal circumstances, this step can guarantee the network selection success under the GSM, namely enters into step 250 through step 220; If in this step when initiating network selection this PLMN cover and lose suddenly, then will cause the network selection failure under the GSM, namely continue to get back to step 230 through step 220.
In step 250, after the network selection success, resident in the PLMN of network selection success.
Because parallel 2 network selection processes initiating are basic identical, difference only is that corresponding network system is different, and is therefore identical corresponding to network selection process and Fig. 2 of TD-SCDMA, do not repeat them here.Need to prove, owing to after just starting shooting, losing covering, heavily advance in the situations such as service, registration failure, all can cause automatic network selection, therefore all can trigger in these cases dual-mode terminal in the initiation network selection process that walks abreast under the first network system and under the second network system.If under normal holding state, the network selection of the automatic network selection mode that is triggered by the user, then dual-mode terminal is searched network process in the initiation that walks abreast under the first network system and under the second network system, find and containing the PLMN tabulation that the residential quarter covers under the first network system and under the second network system, containing the PLMN tabulation that the residential quarter covers, according to the priority of the PLMN that sets in advance and the priority of network system, the combination of the highest PLMN of priority and network system will be searched after two PLMN tabulation merging that find, if the PLMN in this combination is PLMN under the first network system, then under the first network system, initiate network selection, if the PLMN in this combination is PLMN under the second network system, then under the second network system, initiate network selection.
If judge that in step 110 current network selection is not the network selection under the automatic network selection mode, namely current network selection is the network selection under the manual network preference pattern, then enters step 130.In step 130, dual-mode terminal is searched network process in the initiation that walks abreast under the first network system and under the second network system, find containing the PLMN that the residential quarter covers under the first network system and under the second network system, containing the PLMN that the residential quarter covers, for user selection PLMN to be accessed.
Specifically, at first, the GSM/TD-SCDMA dual-mode terminal carries out respectively the full range search under GSM and under the TD-SCDMA, find the PLMN (can represent by the form of tabulation) that contains the residential quarter under all GSM and cover, and contain the PLMN (can represent by the form of tabulation) that the residential quarter covers under all TD-SCDMA.Full range search under the GSM and the full range search under the TD-SCDMA can be carried out simultaneously.
When the PLMN Search Results under GSM and the TD-SCDMA all out after, with the priority orders of two PLMN tabulations according to PLMN and network system, the ordering that is combined into the row major level to PLMN and network system, PLMN after the ordering and the combination of network system are shown to the user, for user selection PLMN to be accessed, as shown in Figure 3.Wherein, the priority of PLMN and the precedence information of network system set in advance in dual-mode terminal or SIM card (usim card), precedence information according to priority and the network system of PLMN, concrete mode to the ordering that is combined into the row major level of PLMN and network system, also belong to the common practise of this area, repeat no more in this step.
Need to prove that behind user selection PLMN to be accessed, if the PLMN of user selection is the PLMN under the GSM, then dual-mode terminal resident PLMN to user selection under GSM maintains the resident state under the TD-SCDMA; If the PLMN of user selection is the PLMN under the TD-SCDMA, then dual-mode terminal resident PLMN to user selection under TD-SCDMA maintains the resident state under the GSM.
Be not difficult to find, in the present embodiment, access technology by two kinds of network systems that dual-mode terminal is supported is separated fully, finishes separately the network selection under the single access technology, so that the network selection flow process can be all the time single, carry out under the access technology, the network configuration of complexity so no matter, under every kind of access technology, general twice network selection of maximum needs just can find suitable residential quarter resident, shortened the network selection time, as early as possible resident residential quarter to regular traffic can be provided.Simultaneously, because the access technology of two kinds of network systems is separated fully, between two access technologies, ceaselessly replace when having avoided the dual-mode terminal network selection, thereby increased the stability of equipment.And dual-mode terminal can be fully independent at resident under the first network system and under the second network system, real realizes two treating.
Need to prove that present embodiment is take dual-mode terminal as the GSM/TD-SCDMA dual-mode terminal, the first network system is GSM, and the second network system is that TD-SCDMA is that example describes.In actual applications, the first network system also can be TD-SCDMA, and the second network system also can be GSM, and perhaps, dual-mode terminal is for supporting the dual-mode terminal of other two kinds of standards.
The said method execution mode all can be realized in modes such as software, hardware, firmwares.No matter the present invention realizes with software, hardware or firmware mode, instruction code can be stored in the memory of computer-accessible of any type (for example permanent or revisable, volatibility or non-volatile, solid-state or non-solid-state, fixing or removable medium etc.).Equally, memory can for example be programmable logic array (Programmable Array Logic, be called for short " PAL "), random access memory (Random Access Memory, be called for short " RAM "), programmable read only memory (Programmable Read Only Memory, be called for short " PROM "), read-only memory (Read-Only Memory, be called for short " ROM "), Electrically Erasable Read Only Memory (Electrically Erasable Programmable ROM, be called for short " EEPROM "), disk, CD, digital versatile disc (Digital Versatile Disc is called for short " DVD ") etc.
Second embodiment of the invention relates to a kind of dual-mode terminal.Fig. 4 is the structural representation of this dual-mode terminal.This dual-mode terminal comprises the first network selection module, the second network selection module, judge module.
The first network selection module is used for the network selection under the first network system, and the second network selection module is used for the network selection under the second network system, and wherein, first network system and second network system are two kinds of network systems that dual-mode terminal is supported.
Judge module is used for when dual-mode terminal needs network selection, judge that whether current be network selection under the automatic network selection mode, if be the network selection under the automatic network selection mode, then indicate the first network selection module and the second network selection module parallel network selection process of initiating under each self-corresponding network system.If judge module judges that current is not network selection (being the network selection under the manual network preference pattern) under the automatic network selection mode, then indicate the parallel initiation under each self-corresponding network system of the first network selection module and the second network selection module to search network process, find containing the PLMN that the residential quarter covers under the first network system and under the second network system, containing the PLMN that the residential quarter covers, for user selection PLMN to be accessed.
Wherein, the first network selection module comprises following submodule:
First searches submodule, is used for searching under the first network system PLMN that priority is the highest.
The first network selection is initiated submodule, is used for searching the highest PLMN of priority that submodule finds, the initiation network selection according to first.
The first network selection is successfully judged submodule, is used for judging whether the network selection of the first network selection initiation submodule initiation is successful, if success then finishes the network selection process.If unsuccessful then indicate first to search submodule and obtain under the first network system, contain the PLMN that the residential quarter covers, and indicate the first network selection to initiate submodule and search the highest PLMN of PLMN medium priority that submodule gets access to according to first, initiate network selection.
The first resident submodule is used for the resident PLMN that initiates the success of submodule network selection to the first network selection.
The second network selection module comprises following submodule:
Second searches submodule, is used for searching under the second network system PLMN that priority is the highest.
The second network selection is initiated submodule, is used for searching the highest PLMN of priority that submodule finds, the initiation network selection according to second.
The second network selection is successfully judged submodule, is used for judging whether the network selection of the second network selection initiation submodule initiation is successful, if success then finishes the network selection process.If unsuccessful then indicate second to search submodule and obtain under the second network system, contain the PLMN that the residential quarter covers, and indicate the second network selection to initiate submodule and search the highest PLMN of PLMN medium priority that submodule gets access to according to second, initiate network selection.
The second resident submodule is used for the resident PLMN that initiates the success of submodule network selection to the second network selection.
In addition, dual-mode terminal can also comprise order module, the 3rd resident module and the 4th resident module.
Order module is used for according to the priority of the PLMN that sets in advance and the priority of network system, to the first network selection module and the second network selection module searches to PLMN and the ordering that is combined into the row major level of network system, PLMN after the ordering and the combination of network system are shown to the user, select for the user.This order module can be an independently module, also can be integrated in the first network selection module or the second network selection module.
The 3rd resident module is used for when the PLMN of user selection is PLMN under the first network system, and resident PLMN to user selection when the PLMN of user selection is PLMN under the second network system, maintains the resident state under the first network system.
The 4th resident module is used for when the PLMN of user selection is PLMN under the second network system, and resident PLMN to user selection when the PLMN of user selection is PLMN under the first network system, maintains the resident state under the second network system.
The 3rd resident module can be integrated in the first resident submodule, is namely realized the function of the 3rd resident module by the first resident submodule; The 4th resident module can be integrated in the second resident submodule, is namely realized the function of the 4th resident module by the second resident submodule.
In the present embodiment, the first network system is GSM, and the second network system is TD-SCDMA.Perhaps, the first network system is TD-SCDMA, and the second network system is GSM.
Be not difficult to find that the first execution mode is the method execution mode corresponding with present embodiment, present embodiment can with the enforcement of working in coordination of the first execution mode.The correlation technique details of mentioning in the first execution mode is still effective in the present embodiment, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in the present embodiment also can be applicable in the first execution mode.
Need to prove, each unit of mentioning in the said equipment execution mode all is logical block, physically, a logical block can be a physical location, it also can be the part of a physical location, can also realize that the physics realization mode of these logical blocks itself is not most important with the combination of a plurality of physical locations, the combination of the function that these logical blocks realize is the key that just solves technical problem proposed by the invention.In addition, for outstanding innovation part of the present invention, above-mentioned each the equipment execution mode of the present invention will not introduced not too close unit with solving technical problem relation proposed by the invention, and this does not show that there is not other unit in the said equipment execution mode.
Although pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (11)
1. a dual-mode terminal network selection method is characterized in that, comprises following steps:
Dual-mode terminal is when the needs network selection, if described network selection is the network selection under the automatic network selection mode, then described dual-mode terminal is in the initiation network selection process that walks abreast under the first network system and under the second network system;
If described network selection is the network selection under the manual network preference pattern, then described dual-mode terminal is searched network process in the initiation that walks abreast under the first network system and under the second network system, find containing PLMN PLMN that the residential quarter covers under the described first network system and under described second network system, containing the PLMN that the residential quarter covers, for user selection PLMN to be accessed;
Wherein, described first network system and second network system are two kinds of network systems that described dual-mode terminal is supported;
Each network selection process in the network selection process of described parallel initiation comprises following substep:
Search under the corresponding network system of network selection process, the PLMN that priority is the highest, and the PLMN the highest according to this priority initiate network selection;
If the network selection success then finishes the network selection process; If network selection is unsuccessful, then obtain under the corresponding network system of network selection process, contain the PLMN that the residential quarter covers, according to the highest PLMN of PLMN medium priority that gets access to, initiate network selection.
2. dual-mode terminal network selection method according to claim 1 is characterized in that, described each network selection process also comprises following substep:
Resident in the PLMN of network selection success.
3. dual-mode terminal network selection method according to claim 1 is characterized in that, under the described first network system and under the second network system parallel initiate the network selection process before, also comprise following steps:
Whether, be under normal holding state, the network selection of the automatic network selection mode that is triggered by the user if judging the network selection of described automatic network selection mode;
If the network selection of the automatic network selection mode that is triggered by the user, then described dual-mode terminal initiates to search network process parallel under the described first network system and under the described second network system, find and containing PLMN tabulation that the residential quarter covers under the described first network system and under described second network system, containing the PLMN tabulation that the residential quarter covers, according to the priority of the PLMN that sets in advance and the priority of network system, the combination of the highest PLMN of priority and network system will be searched after two PLMN tabulation merging that find, if the PLMN in this combination is PLMN under the first network system, then under the first network system, initiate network selection, if the PLMN in this combination is PLMN under the second network system, then under the second network system, initiate network selection;
If not the network selection of the automatic network selection mode that is triggered by the user, then enter again described step in the initiation network selection process that walks abreast under the first network system and under the second network system.
4. dual-mode terminal network selection method according to claim 1 is characterized in that, described find containing PLMN that the residential quarter covers under the first network system and under described second network system, containing the PLMN that the residential quarter covers after, also comprise following steps:
According to the priority of the PLMN that sets in advance and the priority of network system, to the PLMN that finds and the ordering that is combined into the row major level of network system, the PLMN after the ordering and the combination of network system are shown to the user, carry out described selection for the user.
5. dual-mode terminal network selection method according to claim 4 is characterized in that, behind user selection PLMN to be accessed, also comprises following steps:
If the PLMN of described user selection is the PLMN under the described first network system, described dual-mode terminal resident PLMN to described user selection under described first network system then, the resident state under the second network system remains unchanged;
If the PLMN of described user selection is the PLMN under the described second network system, described dual-mode terminal resident PLMN to described user selection under described second network system then, the resident state under the first network system remains unchanged.
6. each described dual-mode terminal network selection method in 5 according to claim 1 is characterized in that, described first network system is global system for mobile communications GSM, and described second network system is TD SDMA TD-SCDMA; Perhaps,
Described first network system is TD-SCDMA, and described second network system is GSM.
7. a dual-mode terminal is characterized in that, comprises the first network selection module, the second network selection module and judge module;
Described the first network selection module is used for the network selection under the first network system, and described the second network selection module is used for the network selection under the second network system, and wherein, described first network system and second network system are two kinds of network systems that described dual-mode terminal is supported;
Described judge module is used for when dual-mode terminal needs network selection, judge that whether current be network selection under the automatic network selection mode, if be the network selection under the automatic network selection mode, then indicate described the first network selection module and described the second network selection module parallel network selection process of initiating under each self-corresponding network system; If described judge module judges that current is not network selection under the automatic network selection mode, then indicate the parallel initiation under each self-corresponding network system of described the first network selection module and described the second network selection module to search network process, find containing PLMN that the residential quarter covers under the described first network system and under described second network system, containing the PLMN that the residential quarter covers, for user selection PLMN to be accessed;
Described the first network selection module comprises following submodule:
First searches submodule, is used for searching under described first network system the PLMN that priority is the highest;
The first network selection is initiated submodule, is used for searching the highest PLMN of priority that submodule finds, the initiation network selection according to described first;
The first network selection is successfully judged submodule, is used for judging whether the network selection of described the first network selection initiation submodule initiation is successful, if success then finishes the network selection process; If unsuccessful then indicate described first to search submodule and obtain under the described first network system, contain the PLMN that the residential quarter covers, and indicate described the first network selection to initiate submodule and search the highest PLMN of PLMN medium priority that submodule gets access to according to described first, initiate network selection;
Described the second network selection module comprises following submodule:
Second searches submodule, is used for searching under described second network system the PLMN that priority is the highest;
The second network selection is initiated submodule, is used for searching the highest PLMN of priority that submodule finds, the initiation network selection according to described second;
The second network selection is successfully judged submodule, is used for judging whether the network selection of described the second network selection initiation submodule initiation is successful, if success then finishes the network selection process; If unsuccessful then indicate described second to search submodule and obtain under the described second network system, contain the PLMN that the residential quarter covers, and indicate described the second network selection to initiate submodule and search the highest PLMN of PLMN medium priority that submodule gets access to according to described second, initiate network selection.
8. dual-mode terminal according to claim 7 is characterized in that, described the first network selection module also comprises:
The first resident submodule is used for the resident PLMN that initiates the success of submodule network selection to described the first network selection;
Described the second network selection module also comprises:
The second resident submodule is used for the resident PLMN that initiates the success of submodule network selection to described the second network selection.
9. dual-mode terminal according to claim 7, it is characterized in that, described dual-mode terminal also comprises order module, be used for according to the priority of the PLMN that sets in advance and the priority of network system, to described the first network selection module and described the second network selection module searches to PLMN and the ordering that is combined into the row major level of network system, PLMN after the ordering and the combination of network system are shown to the user, carry out described selection for the user.
10. dual-mode terminal according to claim 9 is characterized in that, described dual-mode terminal also comprises:
The 3rd resident module, be used for when the PLMN of described user selection is PLMN under the described first network system, resident PLMN to described user selection when the PLMN of described user selection is PLMN under the described second network system, maintains the resident state under the described first network system;
The 4th resident module, be used for when the PLMN of described user selection is PLMN under the described second network system, resident PLMN to described user selection when the PLMN of described user selection is PLMN under the described first network system, maintains the resident state under the described second network system.
11. each described dual-mode terminal in 10 is characterized in that according to claim 7, described first network system is global system for mobile communications GSM, and described second network system is TD SDMA TD-SCDMA; Perhaps,
Described first network system is TD-SCDMA, and described second network system is GSM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010253425 CN101932084B (en) | 2010-08-16 | 2010-08-16 | Network selection method for double-mode terminal and double-mode terminal |
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| CN102421129B (en) * | 2011-05-27 | 2014-05-07 | 展讯通信（上海）有限公司 | Adjacent cell measurement method of multimode multi-card multi-standby mobile terminal |
| CN102271386A (en) * | 2011-08-24 | 2011-12-07 | 中兴通讯股份有限公司 | Method and device of network selection for multi-mode terminal |
| CN102724735A (en) * | 2012-05-28 | 2012-10-10 | 中兴通讯股份有限公司 | Method, device and terminal for selecting public land mobile network (PLMN) |
| CN102869071B (en) * | 2012-09-12 | 2015-02-18 | 青岛海信移动通信技术股份有限公司 | Method and device for supporting global system for mobile communications (GSM) terminal to search long term evolution (LTE) network |
| US9525995B2 (en) * | 2015-05-05 | 2016-12-20 | Apple Inc. | Mobile device with improved network selection while roaming |
| US9820122B2 (en) * | 2015-05-22 | 2017-11-14 | Acer Incorporated | Method of performing automatic PLMN selection in IOPS-capable wireless communication system |
| CN106332227B (en) * | 2015-06-16 | 2019-07-26 | 辰芯科技有限公司 | Method for searching network and device |
| CN105828414A (en) * | 2015-06-25 | 2016-08-03 | 维沃移动通信有限公司 | Method for searching network by terminal and terminal |
| CN108668333B (en) * | 2018-07-09 | 2021-05-28 | 深圳市优克联新技术有限公司 | Switching method and system of mobile network |
| CN109104718A (en) * | 2018-09-04 | 2018-12-28 | 深圳市优克联新技术有限公司 | A kind of switching method and system of mobile network |
| CN114698058A (en) * | 2020-12-30 | 2022-07-01 | 维沃移动通信有限公司 | Network access method, device and terminal |
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