CN101895968B - Method for mobile terminal to find network and mobile terminal - Google Patents
Method for mobile terminal to find network and mobile terminal Download PDFInfo
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Abstract
The invention provides a mobile terminal and a method thereof for finding a network. The method comprises the following steps: scanning the signal intensity of each frequency point; and performing network finding treatment according to the frequency points: synchronizing one frequency point, receiving part of system messages of the synchronized frequency point for determining if the network to which the frequency point belongs is a target network, and if the network to which the frequency point belongs is the target network, continuing to receive other system messages of the frequency point for retaining the frequency point. The method also comprises: before the system messages of the synchronized frequency point are received for the first time, judging whether there is enough time for synchronizing at least one more frequency point, and if there is enough time, continuing to synchronize other frequency points; and at the time intervals of the receiving of the system messages of the synchronized frequency point, synchronizing other frequency points and/or receiving system messages to make the time from the startup of the mobile terminal to the startup of a communication service after the mobile terminal is switched to a cell shorter.
Description
Technical field
The present invention relates to field of mobile communication, particularly a kind of portable terminal network searching method and portable terminal.
Background technology
At present, use global system for mobile communications (Global System for Mobile; GSM) user is through Subscriber Identity Module (Subscriber Identifcation Module Card; Hereinafter to be referred as SIM) insert portable terminal after, the user can obtain network services.Through SIM, the user is able to become the registered user of network, and the various services that enjoy network provides.Therefore, portable terminal perhaps all need carry out SIM after the changing district and look for net after start, just searches for frequency, then through the resident sub-district to the network that belongs to this SIM operator of frequency.
Disclose the method that a kind of mobile terminal-opening is looked for net at publication number in " CN101188835A " Chinese patent document, Fig. 1 is the flow chart that a kind of mobile terminal-opening is looked for net in the prior art; After being inserted with the mobile terminal-opening of SIM, comprise the following steps:
Step 11, the signal strength signal intensity of scanning frequency, said frequency is the numbering to fixed frequency;
Step 13; Obtain time synchronization information through decoding SCH (synchronizing channel); Receive the information of correction work frequency through FCCH (frequency correction channel), thereby can judge whether this frequency is BCCH (Broadcast Control Channel, BCCH) frequency; If the frequency of locking is the BCCH frequency, read its system message three;
Step S14 judges according to the system message of reading three whether said frequency belongs to the network of this SIM operator, if then get into step S17, otherwise gets into step S15;
Step S15 judges whether frequency is searched for to finish, if search finishes then gets into step S18, otherwise gets into step S16;
Step S16 locks onto the strongest frequency of signal strength signal intensity in remaining frequency, gets into step 13;
Step S17, sub-district, portable terminal resident this frequency place saidly residently is meant that the system message with this sub-district receives, and begins to receive the paging of this sub-district, just can begin to have made a phone call;
Step S18, portable terminal continue to keep watch on all frequencies, select residently, and interface of mobile terminal shows no network service.
But it is to adopt the method for serial that above-mentioned portable terminal is looked for the method for net, the judgement of a frequency of a frequency, and therefore speed is slow like this.Especially; Development along with wireless mobile applied business; It is also more and more that user has the situation of two above SIMs simultaneously; Like this in multi-card mobile terminal, owing to after a plurality of SIMs are accomplished sub-district resident, could begin Communications service, so the above-mentioned slow problem of net spee of looking for seems more serious.
Summary of the invention
The technical problem that the present invention solves provides a kind of portable terminal network searching method and portable terminal, makes portable terminal shorter to the time of launching Communications service behind start and changing district.
In order to solve the problems of the technologies described above, the present invention provides a kind of portable terminal network searching method, comprises step:
Scan the signal strength signal intensity of each frequency;
Look for net to handle to frequency, up to find belong to objective network can be resident frequency or all frequencies all do not belong to objective network, it is definite according to said signal strength signal intensity to look for net to handle the order of each frequency that is directed against;
The said frequency that is directed against looks for the net processing to comprise: synchronous frequency; Receive the part system message of said synchronous frequency, to confirm whether the network under this frequency is objective network, is the other system message that then continues to receive this frequency, with resident this frequency;
This method also comprises:
Whether judgement has enough time synchronized another frequency at least before the system message that receives for the first time said synchronous frequency, be then to continue other frequencies synchronously; And
The time interval of the system message that receives said synchronous frequency carry out other frequencies synchronously and/or the reception of system message.
Optional, said synchronous frequency comprises:
Obtain the synchronizing channel of frequency and the data of frequency correction channel.
Optional, the part system message of the said synchronous frequency of said reception, to confirm whether the network under this frequency is that objective network comprises:
Obtain the system message of the BCCH of said synchronous frequency;
According to the network under this synchronous frequency of the judgement of first system message in the system message of said BCCH, said first system message comprises the information of the said frequency belonging network that reads.
Optional, the system message three that said first system message is the GSM network.
Optional, said objective network is the affiliated network of client's identification card of mobile phone, the standard of the packets of information includes network of said network and the information of operator thereof.
Optional, before the system message that receives said synchronous frequency for the first time, judged whether enough time synchronized at least another frequency comprise step:
Obtain the type of its system message to be received according to the type of portable terminal;
Obtain the time that its system message of treating type of receipt arrives according to sync channel data, to judge said treating before the system message arrival of type of receipt whether enough time synchronized another frequency at least being arranged.
Optional, said portable terminal is three cards, three standby communication terminals.
Optional, said objective network is the network under arbitrary client's identification card in said three cards, said find belong to can resident frequency being meant of objective network find network under all client's identification cards can be resident frequency.
Optional; Also comprise: after the network under the frequency of confirming to receive system message is objective network; If the system message that continue to receive the frequency that belongs to objective network is when carrying out other frequencies synchronous; Conflict, the then preferential system message that receives the frequency that belongs to objective network appear during with the system message that receives other frequencies in the system message that perhaps continue to receive the frequency that belongs to objective network.
A kind of portable terminal comprises:
Radio-frequency module is used to scan the signal strength signal intensity of each frequency;
Receiving element is used for according to said signal strength signal intensity synchronous frequency, and the system message that receives said synchronous frequency;
The network judging unit is used for confirming whether the network under the frequency is objective network;
Arbitration unit; Be used to control synchronous frequency of said receiving element and the part system message that receives said synchronous frequency; Control said network judging unit and confirm according to said part system message whether the network under this frequency is objective network; Be then to control the other system message that receiving element continues to receive this frequency, with resident this frequency;
Said arbitration unit also is used for before the system message that receives for the first time said synchronous frequency, having judged whether enough time synchronized another frequency at least, is then to control said receiving element to continue other frequencies synchronously; And, control said receiving element and carry out at least another frequency synchronously and/or the reception of system message in the time interval of the system message that receives said synchronous frequency.
Optional, said synchronous frequency comprises:
Obtain the synchronizing channel of frequency and the data of frequency correction channel.
Optional, said arbitration unit comprises:
Processing module; Be used to control synchronous frequency of said receiving element and the part system message that receives said synchronous frequency; Control said network judging unit and confirm according to said part system message whether the network under this frequency is objective network; Be then to control the other system message that receiving element continues to receive this frequency, with resident this frequency;
Type judging module is used for the type according to its system message to be received of type acquisition of portable terminal;
Time judgment module is used for obtaining the time that its system message of treating type of receipt arrives according to sync channel data, to judge said treating before the system message arrival of type of receipt whether enough time synchronized another frequency at least being arranged;
First control unit is used for before the said system message of treating type of receipt arrives, having enough time synchronized at least during another frequency, controls said receiving element and continues other frequencies synchronously; And in the time interval of the system message that receives said synchronous frequency, control said receiving element carry out other frequencies synchronously and/or the reception of system message.
Optional, said portable terminal is three cards, three standby communication terminals.
Optional, said objective network is the network under arbitrary client's identification card in said three cards, said find belong to that can resident frequency being meant of objective network find network under all client's identification cards can resident frequency.
Optional; Said arbitration unit also comprises: second control unit; Be used for after confirming to receive network under the frequency of system message and being objective network; If the system message that the system message that continue to receive the frequency that belongs to objective network when carrying out other frequencies synchronous, perhaps continues to receive the frequency that belongs to objective network conflict occurs during with the system message that receives other frequencies, then control the preferential system message that receives the frequency that belongs to objective network of said receiving element.
Compared with prior art, the present invention mainly has the following advantages:
Be to utilize the mode of serial to look for net in conventional art, just search out earlier and resolve its synchronizing channel and frequency correction channel and this frequency after the frequency and carry out synchronously, and then the system message of reception BCCH; Judge whether it belongs to the network of this SIM operator; After the system information reception fully of the words that are with all BCCHs, resident this sub-district, frequency place, otherwise abandon; Continue the frequency of next intensity of scanning again; But the speed of searching net like this is slow, utilizes the parallel net of searching among the present invention, when resolving BCCH, resolves the synchronizing channel and the frequency correction channel of next intensity frequency; Thereby improved the speed of looking for net so greatly, especially for shortening greatly to the time of launching Communications service behind plurality of SIM cards mobile terminal-opening and the changing district.
Description of drawings
Through the more specifically explanation of the preferred embodiments of the present invention shown in the accompanying drawing, above-mentioned and other purpose, characteristic and advantage of the present invention will be more clear.Reference numeral identical in whole accompanying drawings is indicated identical part.Painstakingly do not draw accompanying drawing, focus on illustrating purport of the present invention by actual size equal proportion convergent-divergent.
Fig. 1 is the flow chart that a kind of mobile terminal-opening is looked for net in the prior art;
Fig. 2 is the frame structure sketch map that the mobile terminal-opening of the embodiment of the invention is looked for the control channel in the network process;
Fig. 3 is the flow chart that mobile terminal-opening of the present invention is looked for net;
Fig. 4 is the structural representation of portable terminal first embodiment of the present invention.
Embodiment
It is to adopt the method for serial that traditional portable terminal is looked for the method for net; The judgement of a frequency of a frequency just searches out earlier after the frequency, and portable terminal and frequency are carried out synchronously; And then receive the system message of this frequency; Judge through system message whether it belongs to objective network, the words that are continue to receive its whole system message, resident then this sub-district, frequency place; Otherwise abandon, continue the frequency of next intensity of scanning again, therefore serial looks for the speed of net slow like this.Especially, along with the development of wireless mobile applied business, it is also more and more that user has the situation of two above SIMs simultaneously, like this in multi-card mobile terminal, looks for the slow problem of net spee can be more serious.
For the ease of understanding the present invention, at first control channel is described, the mobile terminal-opening that Fig. 2 shows the embodiment of the invention is looked for the frame structure sketch map of the control channel (CCH, Control Channel) in the network process.Said control channel is the logic channel in the GSM network standard; As shown in Figure 2; Look in the process of net in start, the data in the control channel are a cycle period with 8 multi-frames (Multiframe), are respectively multi-frame 200 to multi-frame 207; And comprise 51 frames (Frame) in each multi-frame, so the data of the control channel of one-period transmission totally 408 frames.Concrete, the structure of each multi-frame is similarly, comprising: frequency correction channel data F, sync channel data S, BCCH data B, CCCH (CCCH, Common control Channel) data C, idle frame I.Wherein, respectively account for 1 frame, repeat respectively to occur 5 times, be used for transmission frequency correction data and slot synchronization data so that portable terminal carries out the synchronous of frequency and time at a multi-frame medium frequency correction channel data F and sync channel data S; BCCH data B accounts for 4 frames, occurs 1 time, is used to transmit the system message of each type, and its content comprises that the sub-district is represented, channel parameter etc.; Public control channel data C takies 4 frames, occurs repeatedly 9 times, is used for paging and portable terminal application networking etc.; Idle frame I accounts for 1 frame, and the end of each multi-frame occurs 1 time.Look in the process of net in start, if data owner frequency correction channel data F, sync channel data S and the BCCH data B of reception.
In addition; BCCH data B periodically transmits; Specifically be distributed in the 2nd frame to the 5 frames in each multi-frame; Wherein the particular content of transmission is the system message (System information) of a plurality of types of GSM network, and commonly used have system message 1, system message 2, system message 3, a system message 4.Each frame in the said control channel is numbered in regular turn; Its sequence number note is made FN; Then each multi-frame is numbered (FN DIV 51) (being that FN is divided by 51); The numbering note of each multi-frame in the control channel data in corresponding each cycle is made TC, TC=(FN DIV 51) mod (8) (numbering that is multi-frame is to 8 deliverys), and the concrete mapping relations of then all types of system messages are as shown in the table:
| The system message type | |
| System message | |
| 1 | 0 |
| System message 2 | 1 |
| System message 2bis | 5 |
| System message 2ter | 4 or 5 |
| System message 2quater | 4 or 5 |
| System message 3 | 2 or 6 |
| System message 4 | 3 or 7 |
| System message 9 | 4 |
| System message 13 | 4 |
Still with reference to figure 2, the transmission course of control channel can be divided into 3 stages, is respectively: Phase I is used for transmission frequency correction channel data F and sync channel data S; Phase is used to transmit BCCH data B, promptly various types of system messages; Phase I is used to transmit public control channel data C and the frequency correction channel data F and the sync channel data S of a plurality of repetitions.In start process, the data of required reception comprise frequency correction channel data F, sync channel data S and BCCH data B, and its time phase that occupies is Phase I and Phase.
The inventor discovers for GSM network standard process; Look in the network process in start; Synchronous in order to guarantee with frequency, portable terminal needs to receive continuously earlier 13 frames, can guarantee like this in 13 continuous frames; Can receive the sync channel data S of 1 frame and the frequency correction channel data F of 1 frame, thereby make that portable terminal and this frequency are synchronous.Carry out frequency synchronously after, just can obtain all types of system messages arrival times through frequency correction channel data F and sync channel data S.Look in the net at mobile terminal-opening; The system message of the type that has does not need to receive; The system message of the type that has can repeat to send, and for example just need not receive system message 13 for the GPRS network portable terminal, does not support the portable terminal of TD bimodulus just not need receive system message 2quater.Do not support the portable terminal of multiband just not need receive system message 2ter etc.
Therefore after the type of portable terminal is confirmed; Just can know the system message type that needs receive according to the type of portable terminal; If just be the system message arrival of the type that need not receive like this after synchronously; Just do not receive; Like this after synchronously to the system message (hereinafter treating the system message of type of receipt) of the type that needs to receive arrive before may time of occurrence free time, so the inventor utilized should the free time time carry out the reception of the synchronous or system message of other frequencies.
In addition, after the system message of receiving a multi-frame, if the system message of next multi-frame before receiving, or need not receive, also just need not receive; In addition for the Phase I in the transmission course of control channel owing to looking for when net need not; Therefore the time of said Phase I also the free time can occur; Will have the time interval before the system message arrival of treating type of receipt of another multi-frame in the system message of receiving last multi-frame like this, so the inventor has also utilized the time interval of receiving system message to carry out the reception of the synchronous or system message of other frequencies.
Therefore, the inventor proposes to net in the process of handling existing looking at least one frequency, also comprises the steps:
Whether judgement has enough time synchronized another frequency at least before the system message that receives for the first time said synchronous frequency, be then to continue other frequencies synchronously; And
The time interval of the system message that receives said synchronous frequency carry out other frequencies synchronously and/or the reception of system message.
Wherein, the order of looking for net to handle each frequency that is directed against is confirmed according to said signal strength signal intensity; The said frequency that is directed against looks for the net processing to comprise: synchronous frequency; Receive the part system message of said synchronous frequency, to confirm whether the network under this frequency is objective network, is the other system message that then continues to receive this frequency, with resident this frequency.When find belong to objective network can be resident frequency or all frequencies all do not belong to objective network, then no longer continue other frequencies and the system message that receives frequency synchronously.
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing concrete implementation of the present invention done detailed explanation.
Fig. 2 is the flow chart that mobile terminal-opening of the present invention is looked for net.As shown in Figure 2, mobile terminal-opening of the present invention looks for net to comprise the following steps:
S101: the signal strength signal intensity that scans each frequency;
S103: the synchronous frequency of basis signal intensity;
S105: judge before the system message that receives said synchronous frequency for the first time whether enough time synchronized another frequency is at least arranged,, otherwise get into step S107 if then return step S103;
S107: receive the part system message of synchronous frequency, utilize the time interval that receives in the said system message to carry out another frequency perhaps reception of system message synchronously at least;
S109:, judge whether the said synchronous affiliated network of frequency is objective network, is the system message that then continues to receive this frequency, with resident this frequency according to the part system message that receives.
Portable terminal in the present embodiment is for supporting the portable terminal of GSM network standard, and corresponding client's identification card is a SIM, can comprise 1,2,3,4 or multiple SIM card more.
First embodiment
Below in conjunction with Fig. 2 and Fig. 3 the portable terminal network searching method of first embodiment is described.Portable terminal is for supporting the single deck tape-recorder portable terminal of GSM network standard in first embodiment.
At first, execution in step S101, after the mobile terminal-opening energized, the signal strength signal intensity of each frequency of radio-frequency module scanning.Concrete, portable terminal is measured the frequency of all permissions, on each frequency, extracts a plurality of measured values, for example can extract 5 measured values and average, and calculates the average signal strength of each frequency.
Then, execution in step S103, frequency correction channel data F, the sync channel data S of first frequency that the reception signal is the strongest accomplish the synchronous of the portable terminal and first frequency.In the present embodiment, receive the data of 13 frames continuously, just can receive said frequency correction channel data F and sync channel data S, thereby accomplish the Frequency Synchronization and the time synchronized of the portable terminal and first frequency.
Then, execution in step S105 obtains the type of its system message to be received according to the type of portable terminal, obtains the time that its system message of treating type of receipt arrives according to sync channel data S again.In the present embodiment; According to the type of portable terminal, can judge synchronously after, just the broadcast channel data B that arrives of the 3rd frame is not its system message of treating type of receipt; Have 51 frames at least to the time that the broadcast channel data B of next multi-frame arrives so; Enough synchronous 3 frequencies if the broadcast channel data B of next frame neither treat the system message of type of receipt, treat to next that so arrival time of system message of type of receipt is then longer.
Be utilized in the present embodiment to first frequency synchronously after; First system message of treating type of receipt to first frequency arrives before during this period of time; Continue synchronous second frequency; Just after step S105, return execution in step 103; Same synchronous second frequency after, can also continue to judge after second frequency synchronously in the synchronous frequency system message of treating type of receipt the earliest before arriving can satisfy during this period of time at least one frequency synchronously, if satisfy then continue synchronous remaining frequency, the earliest the system message arrival of treating type of receipt in synchronous frequency.
In the present embodiment; For example the system message of treating type of receipt of first frequency arrives the earliest; And first frequency is back idle 51 frames between arriving to the system message of treating type of receipt of first frequency synchronously, then synchronous successively 3 frequencies, i.e. second frequency, the 3rd frequency and the 4th frequency.
Follow execution in step S107; Receive the system message of treating type of receipt of first frequency earlier; The i.e. reception BCCH data B of first multi-frame; After receiving the BCCH data B of a multi-frame,, therefore continue again the residue frequency is carried out synchronously in the interbody spacer at this moment because treat that to next the system message arrival of type of receipt has the time interval before; If perhaps there is the system message of treating type of receipt of synchronous frequency to arrive; For example the system message of treating type of receipt of second frequency arrives, and then receives the system message of treating type of receipt of second frequency, utilizes time interval of the second frequency receiving system message to receive the remaining system message of first frequency more then.
In execution in step S107, can execution in step 109.In the GSM network; System message 3 in the system message has comprised standard and the information of operator of the affiliated network of this frequency; For example " the GSM network that moves " therefore just can judge through the system message in the system message 3 whether this frequency belongs to the objective network of the SIM of portable terminal.In execution in step S107; When receiving the system message 3 of a certain frequency; Just can judge whether this frequency is the objective network of SIM; If then portable terminal continue to receive the remaining system message of this frequency, has accepted resident this frequency of SIM after the system message, finish the synchronous of other frequency and system message reception then.
In addition in other embodiments; Also can be in step S105, only first frequency synchronously and treat that the time interval between the system message of type of receipt carries out only receiving the system message of first frequency at step S107 synchronously to other frequency; When in step 109, judging that first frequency does not belong to objective network; Carry out the judgement of objective network under reception and the frequency of system message of other frequency again, in other words, the reception of the system message of frequency is serial; So also can shorten time to find network greatly, and the step that can simplify the operation.
In addition in other embodiments, also can be in step S107, only the time interval between the system message of treating type of receipt of first frequency carries out synchronously other frequency; When in step 109, judging that first frequency does not belong to objective network; Carry out the judgement of objective network under reception and the frequency of system message of other frequency again, in other words, the reception of the system message of frequency is serial; So also can shorten time to find network greatly, and the step that can simplify the operation.
Second embodiment
Below in conjunction with Fig. 2 and Fig. 3 the portable terminal network searching method of second embodiment is described.Portable terminal is for supporting the single deck tape-recorder portable terminal of GSM network standard in a second embodiment.
At first, execution in step S101, after the mobile terminal-opening energized, the signal strength signal intensity of each frequency of radio-frequency module scanning.Concrete, portable terminal is measured the frequency of all permissions, on each frequency, extracts a plurality of measured values, for example can extract 5 measured values and average, and calculates the average signal strength of each frequency.
Then, execution in step S103, frequency correction channel data F, the sync channel data S of first frequency that the reception signal is the strongest accomplish the synchronous of the mobile phone and first frequency.In the present embodiment, receive the data of 13 frames continuously, just can receive said frequency correction channel data F and sync channel data S, thereby accomplish the Frequency Synchronization and the time synchronized of the portable terminal and first frequency.
Then, execution in step S105 obtains the type of the system message that its needs receive according to the type of portable terminal, obtains to treat the time that the system message of type of receipt arrives according to sync channel data S again.In the present embodiment, according to the type of portable terminal, can judge synchronously after, just the broadcast channel data B that arrives of the 3rd frame is its system message of treating type of receipt.
Then; Execution in step S107, the system message of treating type of receipt of reception first frequency promptly receives BCCH data B earlier; After receiving the BCCH data B of a multi-frame; Because treat that to next the system message arrival of type of receipt has the time interval before, continue again in the interbody spacer at this moment the residue frequency is carried out synchronously, for example carry out the synchronous of second frequency; Continue again synchronously to judge after second frequency synchronously in the synchronous frequency the earliest the system message of treating type of receipt before arriving can satisfy during this period of time at least one frequency synchronously; If satisfy then continue synchronous remaining frequency, the earliest the system message of treating type of receipt arrives in synchronous frequency, then receiving system message.
In the present embodiment; To second frequency synchronously after; Then continue to receive the system message of treating type of receipt of first frequency, after the system message of treating type of receipt of first frequency of receiving a multi-frame, the system message of treating type of receipt of second frequency arrives; Then receive the system message of treating type of receipt of second frequency; After the system message of treating type of receipt of a multi-frame of second frequency receives, proceed the reception of the system message of treating type of receipt of a multi-frame of first frequency again, proceed successively to receive.Thereby the receiving system message that makes different frequent points to walk abreast is perhaps carried out synchronously, has improved the speed that portable terminal is looked for net greatly.
Certainly; In other embodiments of the invention; Can also continue the corresponding operating of nested the 4th frequency; But need to prove that the frequency of " insertion " amounts to the system message of treating type of receipt that time of taking can not surpass an above-mentioned multi-frame to the time interval between the system message of treating type of receipt of another multi-frame, otherwise can cause the losing of system message of first frequency.
In execution in step S107, can execution in step 109.In the GSM network; System message 3 in the system message has comprised standard and the information of operator of the affiliated network of this frequency; For example " the GSM network that moves " therefore just can judge through the system message in the system message 3 whether this frequency belongs to the objective network of the SIM of portable terminal.In execution in step S107; When receiving the system message 3 of a certain frequency; Just can judge whether this frequency is the objective network of SIM; If the words portable terminal continue to receive remaining system message, has accepted resident this frequency of SIM after the system message, finish the synchronous of other frequency and system message reception then.
The 3rd embodiment
Below in conjunction with Fig. 2 and Fig. 3 the portable terminal network searching method of the 3rd embodiment is described.Portable terminal for example is three card tri-standby mobile phones for supporting the multi-card mobile terminal of GSM network standard in the 3rd embodiment.
In the present embodiment; Step S101 is identical with first and second embodiment to step S107, repeats no more, and difference is step 109; When for example receiving the system message 3 of first frequency; Just can judge whether first frequency is any one objective network of three SIM cards of portable terminal,, accept system message resident first frequency of this SIM afterwards if then portable terminal continue to receive the remaining system message of first frequency; Synchronous and the system message that continues other frequency then receives, and perhaps can not find objective network up to all resident frequency of three SIM cards.
System message 3 according to frequency; After judging that a frequency is any one objective network of three SIM cards of portable terminal; When continuing to receive the system message of this frequency; If with the perhaps receiving system message appearance conflict synchronously of other frequencies, the then preferential system message that receives the frequency that belongs to objective network.
Fig. 4 is the example structure sketch map of portable terminal of the present invention.Portable terminal as shown in Figure 4; Comprise: SIM slot 401 is connected in the baseband processing chip 403 of SIM slot, the display 405 that is connected in baseband processing chip, keyboard 407, radio-frequency module 409, power supply 511, exterior storage medium 513 and other peripheral hardwares 515 and is connected in the antenna 517 of radio-frequency module.
Wherein, said radio-frequency module 409 is used to scan the signal strength signal intensity of frequency; Said baseband processing chip comprises:
Receiving element 4031 is used for according to said signal strength signal intensity synchronous frequency, and the system message that receives said synchronous frequency;
Said arbitration unit also is used for before the system message that receives for the first time said synchronous frequency, having judged whether enough time synchronized another frequency at least, is then to control said receiving element to continue other frequencies synchronously; And, control said receiving element and carry out at least another frequency synchronously and/or the reception of system message in the time interval of the system message that receives said synchronous frequency.
In concrete a realization, said arbitration unit 4033 comprises:
In the present embodiment, said portable terminal is three cards, three standby communication terminals.Said objective network is the network under arbitrary client's identification card in said three cards, said find belong to that can resident frequency being meant of objective network find network under all client's identification cards can resident frequency.
Preferably; Said arbitration unit also comprises: second control unit 40335; Be used for after confirming to receive network under the frequency of system message and being objective network; If the system message that the system message that continue to receive the frequency that belongs to objective network when carrying out other frequencies synchronous, perhaps continues to receive the frequency that belongs to objective network conflict occurs during with the system message that receives other frequencies, then control the preferential system message that receives the frequency that belongs to objective network of said receiving element.
Optional, said synchronous frequency comprises:
Obtain the synchronizing channel of frequency and the data of frequency correction channel.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Any those of ordinary skill in the art; Do not breaking away under the technical scheme scope situation of the present invention; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to technical scheme of the present invention, or are revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical scheme of the present invention, all still belongs in the scope of technical scheme protection of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (13)
1. portable terminal network searching method comprises step:
Scan the signal strength signal intensity of each frequency;
Look for net to handle to frequency, up to find belong to objective network can be resident frequency or all frequencies all do not belong to objective network, it is definite according to said signal strength signal intensity to look for net to handle the order of each frequency that is directed against;
The said frequency that is directed against looks for the net processing to comprise: synchronous frequency; Receive the part system message of said synchronous frequency, to confirm whether the network under this frequency is objective network, is the other system message that then continues to receive this frequency, with resident this frequency;
It is characterized in that this method also comprises:
Whether judgement has enough time synchronized another frequency at least before the system message that receives for the first time said synchronous frequency, be then to continue other frequencies synchronously; And
The time interval of the system message that receives said synchronous frequency carry out other frequencies synchronously and/or the reception of system message;
Said before the system message that receives for the first time said synchronous frequency, judged whether enough time synchronized at least another frequency comprise step:
Obtain the type of its system message to be received according to the type of portable terminal;
Obtain the time that its system message of treating type of receipt arrives according to sync channel data, to judge said treating before the system message arrival of type of receipt whether enough time synchronized another frequency at least being arranged.
2. portable terminal network searching method according to claim 1 is characterized in that, said synchronous frequency comprises:
Obtain the synchronizing channel of frequency and the data of frequency correction channel.
3. portable terminal network searching method according to claim 2 is characterized in that, the part system message of the said synchronous frequency of said reception, to confirm whether the network under this frequency is that objective network comprises:
Obtain the system message of the BCCH of said synchronous frequency;
Judge the network under this synchronous frequency according to first system message in the system message of said BCCH, said first system message comprises the information of said synchronous frequency belonging network.
4. portable terminal network searching method according to claim 3 is characterized in that, the system message three that said first system message is the GSM network.
5. portable terminal network searching method according to claim 3 is characterized in that, said objective network is the affiliated network of client's identification card of mobile phone, the standard of the packets of information includes network of said network and the information of operator thereof.
6. portable terminal network searching method according to claim 1 is characterized in that, said portable terminal is three cards, three standby communication terminals.
7. portable terminal network searching method according to claim 6; It is characterized in that; Said objective network is the network under arbitrary client's identification card in said three cards, said find belong to can resident frequency being meant of objective network find network under all client's identification cards can be resident frequency.
8. portable terminal network searching method according to claim 1; It is characterized in that; Also comprise: after the network under the frequency of confirming to receive system message is objective network; If the system message that continue to receive the frequency that belongs to objective network when carrying out the synchronous appearance conflict of other frequencies, perhaps continues to receive the system message of the frequency that belongs to objective network when conflict occurring with the system message that receives other frequencies, the then preferential system message that receives the frequency that belongs to objective network.
9. a portable terminal is characterized in that, comprising:
Radio-frequency module is used to scan the signal strength signal intensity of each frequency;
Receiving element is used for according to said signal strength signal intensity synchronous frequency, and the system message that receives said synchronous frequency;
The network judging unit is used for confirming whether the network under the frequency is objective network;
Arbitration unit comprises: processing module, type judging module, time judgment module and first control unit;
Said processing module; Be used to control synchronous frequency of said receiving element and the part system message that receives said synchronous frequency; Control said network judging unit and confirm according to said part system message whether the network under this frequency is objective network; Be then to control the other system message that receiving element continues to receive this frequency, with resident this frequency;
Said type judging module is used for the type according to its system message to be received of type acquisition of portable terminal;
Said time judgment module is used for obtaining the time that its system message of treating type of receipt arrives according to sync channel data, to judge said treating before the system message arrival of type of receipt whether enough time synchronized another frequency at least being arranged;
Said first control unit is used for before the said system message of treating type of receipt arrives, having enough time synchronized at least during another frequency, controls said receiving element and continues other frequencies synchronously; And in the time interval of the system message that receives said synchronous frequency, control said receiving element carry out other frequencies synchronously and/or the reception of system message.
10. portable terminal according to claim 9 is characterized in that, said synchronous frequency comprises:
Obtain the synchronizing channel of frequency and the data of frequency correction channel.
11. portable terminal according to claim 9 is characterized in that, said portable terminal is three cards, three standby communication terminals.
12. portable terminal according to claim 11 is characterized in that, said objective network is the network under arbitrary client's identification card in said three cards.
13. portable terminal according to claim 9; It is characterized in that; Said arbitration unit also comprises: second control unit; Be used for after confirming to receive network under the frequency of system message and being objective network; If the system message that continue to receive the frequency that belongs to objective network when carrying out the synchronous appearance conflict of other frequencies, perhaps continues to receive the system message of the frequency that belongs to objective network when conflict occurring with the system message that receives other frequencies, then control the preferential system message that receives the frequency that belongs to objective network of said receiving element.
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| CN2010102453258A CN101895968B (en) | 2010-07-30 | 2010-07-30 | Method for mobile terminal to find network and mobile terminal |
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| CN102123430A (en) * | 2011-03-24 | 2011-07-13 | 华为技术有限公司 | Web searching method and terminal |
| CN103068009B (en) * | 2013-01-29 | 2018-05-04 | 中兴通讯股份有限公司 | A kind of method of Quick network finding, system and mobile terminal |
| CN106455003B (en) * | 2015-08-05 | 2020-05-26 | 展讯通信（上海）有限公司 | Method and device for searching network by multi-mode terminal |
| CN106488476B (en) * | 2015-08-31 | 2020-07-31 | 展讯通信（上海）有限公司 | Multimode terminal power scanning method and multimode terminal |
| WO2018126389A1 (en) * | 2017-01-05 | 2018-07-12 | 北京小米移动软件有限公司 | Paging method and apparatus |
| CN114244467A (en) * | 2021-12-09 | 2022-03-25 | 上海星思半导体有限责任公司 | Cell search method and device |
| CN114585057A (en) * | 2022-04-15 | 2022-06-03 | 南京星思半导体有限公司 | Cell search method, device, equipment, storage medium, program product and terminal |
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