CN101959198B - Method for searching GSM (Global System for Mobile Communications) adjacent zone by dual-mode terminal and dual-mode terminal - Google Patents
Method for searching GSM (Global System for Mobile Communications) adjacent zone by dual-mode terminal and dual-mode terminal Download PDFInfo
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Abstract
The invention discloses a method for searching a GSM (Global System for Mobile Communications) adjacent zone by a dual-mode terminal and a dual-mode terminal, belonging to the field of communications. The method comprises the following steps of: receiving an FCCH (Frequency Correction Channel) signal of GSM by using an idle time slot of a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) subframe, calculating the position of an SCH (Synchronization Channel) signal sent by a network side for the second time in the TD-SCDMA subframe after the FCCH signal is received according to a possible frame number difference N between SCH signals sent in adjacent two times by the network side, and receiving by using the idle time slot of the TD-SCDMA subframe. The time slot resource is fully utilized under the premise of ensuring the functions of TD-SCDMA service. Because one RF (Radio Frequency) chip is used for receiving TD-SCDMA and GSM RF in time division, the mutual interference between two RF is avoided, and moreover, the quantity of used chips can be greatly reduced. A significant cost is saved, and power consumption is lower.
Description
Technical field
The present invention relates to the communications field, particularly the GSM adjacent area search technique in the communications field.
Background technology
Continuous development along with the communication technology, various types of wireless communication systems have appearred, 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 "), bluetooth, China Mobile multimedia broadcasting (China MobileMultimedia Broadcasting is called for short " CMMB ") etc.
At present, many terminals (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..
Because the whole network is synchronous in TD-SCDMA, all TD-SCDMA residential quarter frame boundaries alignment, and frame number the whole network is unified, TD-SCDMA only needs synchronously a last residential quarter can the whole network synchronous; And each residential quarter of GSM is asynchronous, and frame boundaries does not overlap, and needs frame synchronization is carried out in each GSM residential quarter.Therefore just need do synchronously frequency correction channel (FrequencyCorrection Channel just to each GSM adjacent area when under TD-SCDMA, GSM being BSIC VERIFY (identification of base stations code check), be called for short " FCCH ") testing process, after detecting FCCH, need further to receive synchronizing channel (SynchronizationChannel is called for short " SCH ").More frequent to the use of RF resource like this.The simplest general method is exactly with two cover radio frequencies (Radio Frequency is called for short " RF ") antenna, TD-SCDMA, GSM is respectively with a path, be independent of each other, data receive the back by digital signal processor (Digital Signal Processor is called for short " DSP ") Coordination Treatment.As shown in Figure 1, Layer1 (layer 1) physical layer scheduling TD-SCDMA and GSM RF parallel receive, and will receive the data buffer memory, and take full advantage of Layer1 physical layer free time processing bimodulus part, carry out the adjacent area search of GSM.In actual applications, both can select a DSP to realize the processing of TD-SCDMA/GSM bimodulus, and also can divide open with two DSP and handle TD-SCDMA path and GSM path.
Yet, the present inventor finds, adopts the scheme of two RF to carry out the adjacent area search of GSM, namely BSIC VERIFY (identification of base stations code check) is carried out in the GSM adjacent area, do not influence the TD-SCDMA business though can guarantee dual mode capability, can introduce many other technical problems.Such as, no matter be to select a DSP to realize that the TD-SCDMA/GSM bimodulus handles, still adopt two DSP to divide to open and handle TD-SCDMA path and GSM path, all can increase the chip number, all need eliminate the interference that exists between two RF, problem that power consumption is bigger etc.And, if select a DSP to realize the processing of TD-SCDMA/GSM bimodulus, also can increase RF, Memory (internal memory) dispatches difficulty; Open processing TD-SCDMA path and GSM path if adopt two DSP to divide, cost then can be higher.
Summary of the invention
The object of the present invention is to provide method and the dual-mode terminal of a kind of dual-mode terminal search GSM adjacent area, make that the GSM adjacent area search under the TD-SCDMA pattern can realize by single RF chip, avoid the phase mutual interference between two RF, save cost, reduce power consumption.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of dual-mode terminal search GSM the method for adjacent area, comprise following steps:
Dual-mode terminal is being in TD SDMA TD-SCDMA pattern following time, utilizes the idle time slot of TD-SCDMA subframe to receive the frequency correction channel FCCH signal of global system for mobile communications GSM;
After receiving the FCCH signal, dual-mode terminal sends the frame number N that may differ between the synchronous channel SCH signal adjacent 2 times according to network side, and the calculating SCH signal that network side sends for the second time after receiving the FCCH signal is in the position of TD-SCDMA subframe;
If the position of the TD-SCDMA subframe of calculating is in the idle time slot of TD-SCDMA subframe, then dual-mode terminal receives the SCH signal that network side sends for the second time according to the position of the TD-SCDMA subframe of calculating.
Embodiments of the present invention also provide a kind of dual-mode terminal, comprise:
The FCCH signal receiving module is used for being in TD SDMA TD-SCDMA pattern following time, utilizes the idle time slot of TD-SCDMA subframe to receive the frequency correction channel FCCH signal of global system for mobile communications GSM;
Computing module is used for after receiving the FCCH signal, sends the frame number N that may differ between the synchronous channel SCH signal adjacent 2 times according to network side, and the calculating SCH signal that network side sends for the second time after receiving the FCCH signal is in the position of TD-SCDMA subframe;
First judge module is used for judging that the position of TD-SCDMA subframe of computing module calculating is whether at the idle time slot of TD-SCDMA subframe;
The SCH signal receiving module when being used in position that first judge module is judged the TD-SCDMA subframe of calculating the idle time slot in the TD-SCDMA subframe, according to the position of the TD-SCDMA subframe of calculating, receives the SCH signal that network side sends.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:
Utilize the FCCH signal of the idle time slot reception GSM of TD-SCDMA subframe, after correctly receiving the FCCH signal, send the frame number N that may differ between the SCH signal adjacent 2 times according to network side, the calculating SCH signal that network side sends for the second time after receiving the FCCH signal is in the position of TD-SCDMA subframe; Utilize the idle time slot of TD-SCDMA subframe, the SCH signal that sends for the second time according to the network side that calculates receives the SCH signal that network side sends for the second time in the position of TD-SCDMA subframe.Owing to be to utilize the idle time slot of TD-SCDMA subframe to receive the FCCH signal of GSM and follow-up SCH signal, so the adjacent area of GSM searches net and do not take the TD-SCDMA business time-slot fully, only needs the idle time slot of TD-SCDMA arranged to receive to GSM to get final product.Under the prerequisite of guaranteeing the TD-SCDMA business function, guarantee BSICVERIFY in time is in the GSM adjacent area.Owing to utilize the timesharing of a RF chip to carry out TD-SCDMA and GSM RF reception, therefore not only avoided the phase mutual interference between two RF, can also reduce chip significantly and use number, save great amount of cost, power consumption is also lower.
Further, after receiving the SCH Signal Fail, send other frame number M that may differ between the synchronous channel SCH signal adjacent 2 times according to network side, calculate the SCH signal of network side transmission next time in the position of TD-SCDMA subframe, the idle time slot of recycling TD-SCDMA subframe, the SCH signal that sends according to the network side next time that calculates carries out the reception of SCH signal in the position of TD-SCDMA subframe.Because according to existing standard, may differ 10 frames or 11 frames between next SCH and the last SCH, therefore after serving as to seek the SCH failure at interval with 10 frames (or 11 frames), serve as to seek at interval next SCH with 11 frames (or 10 frames) again, can correctly receive the SCH signal further to guarantee to search in the network process at this GSM.
Further, N is that 10, M is 11.That is to say, when for the first time receiving the SCH signal with 10 frames be interval calculation SCH signal in the position of TD-SCDMA subframe, after taking defeat, again with 11 frames be interval calculation SCH signal in the position of TD-SCDMA subframe, carry out the reception of SCH signal.Owing to it will be appreciated by those skilled in the art that, the possibility that may differ 10 frames between next SCH and the last SCH is bigger, therefore earlier with 10 frames be interval calculation SCH signal in the position of TD-SCDMA subframe, can make dual-mode terminal receive the SCH signal rapidly as much as possible.
Further, if the SCH signal that the network side that calculates sends is in the position of TD-SCDMA subframe, not in the idle time slot of TD-SCDMA subframe, then calculate the SCH signal of network side transmission next time in the position of TD-SCDMA subframe, the SCH signal that sends according to the network side next time that calculates receives the SCH signal in the position of TD-SCDMA subframe again.Because in some cases, may conflict with the TD-SCDMA business time-slot in the SCH position, this moment, the TD-SCDMA service priority should be higher, not disposing GSM receives, therefore by the request that receives the GSM signal is postponed, further guaranteed to utilize the idle time slot of TD-SCDMA subframe to receive the feasibility of SCH signal.
Further, the TD-SCDMA subframe is the subframe under the speech business of TD-SCDMA.Because TD-SCDMA has only used on 1 totally 2 time slots 1 time under speech business, other time slot all is in the free time, therefore can have the more idle time slot to be used for the adjacent area search of GSM.Verified in theory, if have continuous 3 GSM slot lengths in the constant and idle time slot of TD-SCDMA business time-slot configuration, GSM must search net or BSIC VERIFY success within a certain period of time so, therefore, when dual-mode terminal is in the speech business of TD-SCDMA, carry out the adjacent area search of GSM, guaranteed that further GSM searches the net possibility of success.
Description of drawings
Fig. 1 is the dual-mode terminal schematic diagram according to the two RF of employing of the prior art;
Fig. 2 is the dual-mode terminal schematic diagram according to first embodiment of the invention;
Fig. 3 is the method flow diagram according to the dual-mode terminal search GSM adjacent area of first embodiment of the invention;
Fig. 4 is when clashing according to SCH position in the second embodiment of the invention and TD-SCDMA business time-slot, calculates the schematic diagram of SCH position next time;
Fig. 5 is when clashing according to SCH position in the second embodiment of the invention and TD-SCDMA business time-slot, calculates the schematic diagram of SCH position next time again;
Fig. 6 is the dual-mode terminal structural representation according to third 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 the method for a kind of dual-mode terminal search GSM adjacent area.In the present embodiment, adopt the scheme of single RF, single DSP to realize the GSM adjacent area search of dual-mode terminal under the TD-SCDMA pattern.By the scheduling to RF, arrange GSM to receive the idle time slot of TD-SCDMA, make GSM measure and do not take the TD-SCDMA business time-slot fully, as shown in Figure 2.
The idiographic flow of present embodiment as shown in Figure 3, in step 310, dual-mode terminal is determined the time slot configuration under the TD-SCDMA business, gives GSM with the idle timeslot scheduling of each TD-SCDMA subframe, receives the gsm system signal.In the present embodiment, the TD-SCDMA business is the TD-SCDMA speech business, that is to say, the TD-SCDMA subframe is the subframe under the speech business of TD-SCDMA.
Then, in step 320, utilize the more idle time slot of TD-SCDMA to carry out FCCH and detect, namely utilize the FCCH signal of the idle time slot reception GSM of TD-SCDMA subframe.Because TD-SCDMA has only used on 1 totally 2 time slots 1 time under speech business, other time slot all is in the free time, and the idle time slot of theoretical validation must detect one time FCCH more for a long time in a certain number of TD-SCDMA subframe.
Then, in step 330, after receiving the FCCH signal, dual-mode terminal sends the frame number N that may differ between the synchronous channel SCH signal adjacent 2 times according to network side, the calculating SCH signal that network side sends for the second time after receiving the FCCH signal is in the position of TD-SCDMA subframe, and utilize the idle time slot of TD-SCDMA subframe, on the position of the TD-SCDMA subframe of calculating, receive the SCH signal that network side sends for the second time.
Specifically, after finding FCCH, the SCH signal of frame under RF has little time to dispose and receives, therefore need to calculate the 2nd SCH (being the SCH signal that network side sends for the second time) behind the FCCH position, and owing to finding behind the FCCH and not knowing frame number, therefore have two kinds of situations when calculating the SCH position, two SCH may be 10 frames at interval, also may be 11 frames.The frame number N that may differ in this step, is taken as 10.That is to say, with 10 frames be the interval calculation SCH signal that network side sends for the second time after receiving the FCCH signal in the position of TD-SCDMA subframe, and utilize the idle time slot of TD-SCDMA subframe to receive.
Then, in step 340, judge the whether success of reception of SCH signal, if receives successfully then illustrate that the adjacent area of having finished GSM searches for.If take defeat, then enter step 350.
In step 350, send other frame number M that may differ between the synchronous channel SCH signal adjacent 2 times according to network side, calculate the SCH signal of network side transmission next time in the position of TD-SCDMA subframe, and utilize the idle time slot of TD-SCDMA subframe, on the position of the TD-SCDMA subframe of calculating, receive the SCH signal that network side sends next time, so far finish whole GSM and search net (namely finishing this GSM adjacent area search).
That is to say that if in step 330, the SCH signal takes defeat, then more in this step, serve as to seek next SCH at interval with 11 frames, and utilize the idle time slot of TD-SCDMA subframe to receive.If this SCH signal receives successfully, then explanation has completed successfully this GSM adjacent area search, if this SCH signal takes defeat, finishes this GSM adjacent area search too.
In the present embodiment, owing to be to utilize the idle time slot of TD-SCDMA subframe to receive the FCCH signal of GSM and follow-up SCH signal, therefore GSM measures and does not take the TD-SCDMA business time-slot fully, only needs the idle time slot of TD-SCDMA arranged to receive to GSM to get final product.Under the prerequisite of guaranteeing the TD-SCDMA business function, taken full advantage of time interval resource.Owing to utilize the timesharing of a RF chip to carry out TD-SCDMA and GSM RF reception, therefore not only avoided the phase mutual interference between two RF, can also reduce chip significantly and use number, save great amount of cost, power consumption is also lower.
In addition, after serving as to seek at interval the SCH failure with 10 frames, serve as to seek next SCH at interval with 11 frames again, can correctly receive the SCH signal further to guarantee to search in the network process at this GSM.And, it will be appreciated by those skilled in the art that, the possibility that may differ 10 frames between next SCH and the last SCH is bigger, therefore earlier with 10 frames be interval calculation SCH signal in the position of TD-SCDMA subframe, can make dual-mode terminal receive the SCH signal rapidly as much as possible.
In addition, be appreciated that certainly, in actual applications, also can N be set to 11, M and be set to 10.That is to say, when for the first time receiving the SCH signal with 11 frames be interval calculation SCH signal in the position of TD-SCDMA subframe, after taking defeat, again with 10 frames be interval calculation SCH signal in the position of TD-SCDMA subframe, carry out the reception of SCH signal.
Second embodiment of the invention relates to the method for a kind of dual-mode terminal search GSM adjacent area.Second execution mode improves on the basis of first execution mode, main improvements are: in the first embodiment, be defaulted as SCH signal that the network side of calculating sends in the position of TD-SCDMA subframe, in the idle time slot of TD-SCDMA subframe, therefore calculate the SCH signal behind the position of TD-SCDMA subframe, just can directly utilize the idle time slot of TD-SCDMA subframe to receive the SCH signal.And in the present embodiment, further provided the SCH signal of the network side transmission of working as calculating in the position of TD-SCDMA subframe, and in the time of not in the idle time slot of TD-SCDMA subframe, the processing scheme when namely SCH position and TD-SCDMA business time-slot clash.
Specifically, if the SCH signal that the network side that calculates sends is in the position of TD-SCDMA subframe, not in the idle time slot of TD-SCDMA subframe, then the SCH signal that dual-mode terminal adopts and last computing network side sends is in the same procedure of the position of TD-SCDMA subframe, calculate the SCH signal of network side transmission next time in the position of TD-SCDMA subframe, and arrange corresponding the reception.Such as, if in step 330, the SCH signal that network side sends for the second time after receiving the FCCH signal that calculates is in the position of TD-SCDMA subframe, not in the idle time slot of TD-SCDMA subframe, be the interval with 10 frames again then, calculate next time or more next time SCH signal and arrange corresponding reception in the position of TD-SCDMA subframe.If in step 350, the SCH signal that calculates not in the idle time slot of TD-SCDMA subframe, is the interval with 11 frames in the position of TD-SCDMA subframe then again, calculate next time or more next time SCH signal and arrange corresponding reception in the position of TD-SCDMA subframe.That is to say, as long as the SCH position and the TD-SCDMA business time-slot that calculate clash, just the request that receives the GSM signal is postponed, as Fig. 4 or shown in Figure 5.
Because in some cases, may conflict with the TD-SCDMA business time-slot in the SCH position, this moment, the TD-SCDMA service priority should be higher, do not dispose GSM and receive (be among Fig. 4, Fig. 5 GSM request by Discard (abandoning) branch), therefore by the request that receives the GSM signal is postponed, further guaranteed to utilize the idle time slot of TD-SCDMA subframe to receive the feasibility of SCH signal.
What deserves to be mentioned is, if the SCH signal that calculates is in the position of TD-SCDMA subframe, after the number of times in the idle time slot of TD-SCDMA subframe does not reach pre-determined number (as 2 times), can directly finish the search of this GSM adjacent area, to avoid the overlong time of a GSM adjacent area search.
Each method execution mode of the present invention all can be realized in modes such as software, hardware, firmwares.No matter the present invention be with software, hardware, or the firmware mode realize, instruction code can be stored in the memory of computer-accessible of any kind (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.
Third embodiment of the invention relates to a kind of dual-mode terminal.As shown in Figure 6, this dual-mode terminal comprises:
The FCCH signal receiving module is used for being in TD-SCDMA pattern following time, utilizes the idle time slot of TD-SCDMA subframe to receive the frequency correction channel FCCH signal of GSM.
Computing module is used for after receiving the FCCH signal, sends the frame number N (as 10 frames) that may differ between the SCH signal adjacent 2 times according to network side, and the calculating SCH signal that network side sends for the second time after receiving the FCCH signal is in the position of TD-SCDMA subframe.
First judge module is used for judging that the position of TD-SCDMA subframe of computing module calculating is whether at the idle time slot of TD-SCDMA subframe.In the present embodiment, be defaulted as the SCH signal of calculating in the position of TD-SCDMA subframe, in the idle time slot of TD-SCDMA subframe.
The SCH signal receiving module when being used in position that first judge module is judged the TD-SCDMA subframe of calculating the idle time slot in the TD-SCDMA subframe, according to the position of the TD-SCDMA subframe of calculating, receives the SCH signal that network side sends.
Second judge module is used for judging whether the SCH signal that SCH signal receiving module reception network side sends for the second time fails.
Computing module also is used for when second judge module judges that the SCH signal receiving module receives the SCH Signal Fail that network side sends for the second time, send other frame number M that may differ (as 11 frames) between the synchronous channel SCH signal adjacent 2 times according to network side, calculate the SCH signal of network side transmission next time in the position of TD-SCDMA subframe, and trigger first judge module and judge that the position of the TD-SCDMA subframe that computing module calculates is whether in the idle time slot of TD-SCDMA subframe, if the position of the TD-SCDMA subframe that first judge module judge to calculate is in the idle time slot of TD-SCDMA subframe the time, then trigger SCH signal that the SCH signal receiving module sends according to the network side next time that calculates in the position of TD-SCDMA subframe, receive the SCH signal that network side sends next time.
In the present embodiment, the TD-SCDMA subframe is the subframe under the speech business of TD-SCDMA.
Be not difficult to find that first execution mode is the method execution mode corresponding with present embodiment, present embodiment can with the enforcement of working in coordination of first execution mode.The correlation technique details of mentioning in 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 first execution mode.
Four embodiment of the invention relates to a kind of dual-mode terminal.The 4th execution mode improves on the basis of the 3rd execution mode, main improvements are: in the 3rd execution mode, be defaulted as SCH signal that the network side of calculating sends in the position of TD-SCDMA subframe, in the idle time slot of TD-SCDMA subframe, therefore calculate the SCH signal behind the position of TD-SCDMA subframe, just can directly utilize the idle time slot of TD-SCDMA subframe to receive the SCH signal.And in the present embodiment, further provided the SCH signal of the network side transmission of working as calculating in the position of TD-SCDMA subframe, and in the time of not in the idle time slot of TD-SCDMA subframe, the processing scheme when namely SCH position and TD-SCDMA business time-slot clash.
Specifically, dual-mode terminal in the present embodiment also comprises: Postponement module, be used for judging that at first judge module position of calculating is not during the idle time slot in the TD-SCDMA subframe, the SCH signal that the indication computing module adopts and last computing network side sends is in the same procedure of the position of TD-SCDMA subframe, calculate the SCH signal of network side transmission next time in the position of TD-SCDMA subframe, and trigger first judge module, SCH signal receiving module successively.That is to say, as long as the SCH position and the TD-SCDMA business time-slot that calculate clash, just the request that receives the GSM signal is postponed.
In addition, dual-mode terminal can also comprise: stop module, be used at the SCH signal that calculates in the position of TD-SCDMA subframe, after the number of times in the idle time slot of TD-SCDMA subframe does not reach pre-determined number, finish the search of this GSM adjacent area, to avoid the overlong time of a GSM adjacent area search.
Be not difficult to find that second execution mode is the method execution mode corresponding with present embodiment, present embodiment can with the enforcement of working in coordination of second execution mode.The correlation technique details of mentioning in second 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 second execution mode.
Need to prove, each unit of mentioning in each equipment execution mode of the present invention 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.
Though 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 (10)
1. the method for a dual-mode terminal search GSM adjacent area is characterized in that, comprises following steps:
Dual-mode terminal is being in TD SDMA TD-SCDMA pattern following time, utilizes the idle time slot of TD-SCDMA subframe to receive the frequency correction channel FCCH signal of global system for mobile communications GSM;
After receiving described FCCH signal, described dual-mode terminal sends the frame number N that may differ between the synchronous channel SCH signal adjacent 2 times according to network side, and the calculating SCH signal that network side sends for the second time after receiving described FCCH signal is in the position of TD-SCDMA subframe;
If the position of the described TD-SCDMA subframe of calculating is in the idle time slot of TD-SCDMA subframe, then described dual-mode terminal receives the SCH signal that described network side sends for the second time according to the position of the described TD-SCDMA subframe of calculating;
If described dual-mode terminal receives the SCH Signal Fail that described network side sends for the second time, then described dual-mode terminal sends other frame number M that may differ between the synchronous channel SCH signal adjacent 2 times according to network side, calculates the SCH signal of network side transmission next time in the position of TD-SCDMA subframe;
If the SCH signal that the described network side next time that calculates sends is in the position of TD-SCDMA subframe, in the idle time slot of TD-SCDMA subframe, then described dual-mode terminal receives the SCH signal that described network side sends next time according to the position of the described TD-SCDMA subframe of calculating.
2. dual-mode terminal according to claim 1 is searched for the method for GSM adjacent area, it is characterized in that described N is 10, and described M is 11.
3. dual-mode terminal according to claim 1 is searched for the method for GSM adjacent area, it is characterized in that, also comprises following steps:
If the SCH signal that the network side that calculates sends is in the position of TD-SCDMA subframe, not in the idle time slot of TD-SCDMA subframe, then the SCH signal that described dual-mode terminal adopts and last computing network side sends calculates the SCH signal of network side transmission next time in the position of TD-SCDMA subframe in the same procedure of the position of TD-SCDMA subframe;
If the SCH signal that the described network side next time that calculates sends is in the position of TD-SCDMA subframe, in the idle time slot of TD-SCDMA subframe, then described dual-mode terminal receives the SCH signal that described network side sends next time according to the position of the described TD-SCDMA subframe of calculating.
4. dual-mode terminal according to claim 3 is searched for the method for GSM adjacent area, it is characterized in that, also comprises following steps:
Described dual-mode terminal in the position of TD-SCDMA subframe, after the number of times in the idle time slot of TD-SCDMA subframe does not reach pre-determined number, finishes the search of this GSM adjacent area at the SCH signal that calculates.
5. according to the method for each described dual-mode terminal search GSM adjacent area in the claim 1 to 4, it is characterized in that the subframe under the speech business that described TD-SCDMA subframe is TD-SCDMA.
6. a dual-mode terminal is characterized in that, comprises:
The FCCH signal receiving module is used for being in TD SDMA TD-SCDMA pattern following time, utilizes the idle time slot of TD-SCDMA subframe to receive the frequency correction channel FCCH signal of global system for mobile communications GSM;
Computing module, be used for after receiving described FCCH signal, send the frame number N that may differ between the synchronous channel SCH signal adjacent 2 times according to network side, the calculating SCH signal that network side sends for the second time after receiving described FCCH signal is in the position of TD-SCDMA subframe;
First judge module is used for judging that the position of described TD-SCDMA subframe of described computing module calculating is whether at the idle time slot of TD-SCDMA subframe;
The SCH signal receiving module, when being used in position that described first judge module is judged the described TD-SCDMA subframe of calculating the idle time slot in the TD-SCDMA subframe, according to the position of the described TD-SCDMA subframe of calculating, receive the SCH signal that described network side sends;
Described dual-mode terminal also comprises: second judge module is used for judging that described SCH signal receiving module receives the SCH signal that described network side sends for the second time and whether fails;
Described computing module also is used for when described second judge module judges that described SCH signal receiving module receives the SCH Signal Fail that described network side sends for the second time, send other frame number M that may differ between the synchronous channel SCH signal adjacent 2 times according to network side, calculate the SCH signal of network side transmission next time in the position of TD-SCDMA subframe, and trigger described first judge module and judge that the position of the described TD-SCDMA subframe that described computing module calculates is whether in the idle time slot of TD-SCDMA subframe, if the position that described first judge module is judged the described TD-SCDMA subframe of calculating is in the idle time slot of TD-SCDMA subframe the time, then trigger SCH signal that described SCH signal receiving module sends according to the network side next time that calculates in the position of TD-SCDMA subframe, receive the SCH signal that described network side sends next time.
7. dual-mode terminal according to claim 6 is characterized in that, described N is 10, and described M is 11.
8. dual-mode terminal according to claim 6, it is characterized in that, described dual-mode terminal also comprises: Postponement module, when being used in position that described first judge module is judged the described TD-SCDMA subframe of calculating not the idle time slot in the TD-SCDMA subframe, indicate the SCH signal of described computing module employing and the transmission of last computing network side in the same procedure of the position of TD-SCDMA subframe, calculate the SCH signal of network side transmission next time in the position of TD-SCDMA subframe, and trigger described first judge module, SCH signal receiving module successively.
9. dual-mode terminal according to claim 8, it is characterized in that, described dual-mode terminal also comprises: stop module, be used in the position of the SCH signal that calculates in the TD-SCDMA subframe, after the number of times in the idle time slot of TD-SCDMA subframe does not reach pre-determined number, finish the search of this GSM adjacent area.
10. according to each described dual-mode terminal in the claim 6 to 9, it is characterized in that the subframe under the speech business that described TD-SCDMA subframe is TD-SCDMA.
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| CN102510270A (en) * | 2011-11-04 | 2012-06-20 | 中兴通讯股份有限公司 | Duplexer, radio-frequency front module, multi-mode terminal and filtering method of duplexer |
| CN102799910A (en) * | 2011-12-20 | 2012-11-28 | 深圳中科讯联科技有限公司 | Time-sharing working method of double frequency read-write card |
| CN107404629A (en) * | 2016-08-31 | 2017-11-28 | 杭州威力克通信系统有限公司 | A kind of method that video monitoring information is transmitted using TD LTE digital optical fiber direct stations |
| CN110806994B (en) * | 2019-09-29 | 2021-09-07 | 华为终端有限公司 | Signal transmission method and device |
| CN111435844B (en) * | 2019-11-06 | 2021-11-23 | 珠海市杰理科技股份有限公司 | Method, device, equipment and system for correcting audio data in dual-wireless Bluetooth communication |
| CN111278070B (en) * | 2020-02-21 | 2021-09-17 | 展讯通信（上海）有限公司 | Method and system for measuring adjacent cell, electronic device and storage medium |
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