CN101997567A - Method and device for identifying base station identify code - Google Patents
Method and device for identifying base station identify code Download PDFInfo
- Publication number
- CN101997567A CN101997567A CN2009101945322A CN200910194532A CN101997567A CN 101997567 A CN101997567 A CN 101997567A CN 2009101945322 A CN2009101945322 A CN 2009101945322A CN 200910194532 A CN200910194532 A CN 200910194532A CN 101997567 A CN101997567 A CN 101997567A
- Authority
- CN
- China
- Prior art keywords
- time
- next cycle
- synchronizing sequence
- occurrence
- bsic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The embodiment of the invention discloses a method and a device for identifying a BSIC (Base Station Identify Code). The method comprises the following steps of: receiving a GSM (Global System for Mobile Communication) signal in an idle time window; demodulating SB (Synchronous Burst) to realize identification of BSIC when the SB is searched in the received GSM signal; searching a synchronizing sequence of the SB in the GSM signal when the SB is not searched in the received GSM signal, obtaining the occurrence time of the SB of the next period according to the synchronizing sequence of the SB; and extracting the SB of the next period from the occurrence time of the next period, and demodulating the SB of the next period to realize identification of the BSIC. By adopting the embodiment of the invention, the service quality of high-speed data services can be improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of recognition methods and device of base station identity code.
Background technology
For GSM (Global System for Mobile Communications, global system for mobile communications) multimode terminal, under continuous mode, need periodically the adjacent area of all configurations to be measured according to agreement, the measurement between system is just switched so that realize the business of the minizone of different districts or different access technologies.In GSM, measurement between this system mainly comprises: RSSI (Received Signal Strength Indication, the indication of received signal intensity) identification and BSIC (Base Station Identity Code, base station identity code) identification, the identification of RSSI makes TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, the code division multiple access that time-division is synchronous) terminal can measure the carrier power of GSM, and the identification of BSIC can make whether the stronger several sub-districts of TD-SCDMA terminal check power are effective GSM sub-district.
Wherein, when carrying out BSIC identification, need terminal parses SCH (Synchronization Channel, synchronizing channel), and SB (the Synchronization Burst of carrying SCH, synchronization burst) length is 15/26us=577us, structural relation by TD-SCDMA frame and GSM frame can obtain, under the TD-SCDMA service condition, when the free time of GSM frame, window was greater than 15/26+5/13=962us, the success rate of finishing BSIC identification was 100%, when free time, window was greater than 15/26=577us and less than 962us, the success rate of finishing BSIC identification has certain probability, when free time, window was less than 577us, then can not finish BSIC identification.
On the other hand because TD-SCDMA belongs to time-division multiple address system, its free time the size of window depend on networking side scheduling, have a lot of scenes and make terminal not have the continuous free time window can be greater than 962us.For example, terminal is being done the TD-SCDMA high speed business, HSDPA (High Speed Downlink Packet Access as 2.8Mbps, high speed downlink packet inserts) during business or UL384kbps/DL384kbps professional, have only T0S0, DwPTS, GAP and UpPTS time slot to can be used as the free time window, but these 4 time slots are 0 o'clock at the emission lead TA of the first time slot TS1, have only 950us altogether, can't guarantee that 100% ground finishes the identification of the BSIC of network requirement.In addition, also have a lot of application scenarioss to make terminal have only a business time-slot free time, promptly the time slot of a 675us between the first time slot TS1 to the, the six time slot TS6 at this moment, can't guarantee that also 100% finishes the BSIC identification of network requirement.
At present, the way of this class multimode terminal generally has two kinds: a kind of way is the measurement of not carrying out between system, that is, do not report the different nearby region measurement result of system or report minimum measured value; Another kind of way is only to finish RSSI identification when the measurement of carrying out between system, and does not carry out sub-district BSIC identification.Yet, when the TD-SCDMA/GSM dual-mode terminal can't carry out the BSIC identification of the adjacent sub-district of GSM under high speed business, will cause can't realizing switching between professional system, this covers under the also incomplete situation at current 3G network, has influenced the service quality of high-speed data service largely.
Summary of the invention
In order to solve the problems of the technologies described above, the embodiment of the invention provides recognition methods and the device of a kind of BSIC, to improve the service quality of high-speed data service.
The embodiment of the invention discloses following technical scheme:
The recognition methods of a kind of base station identity code BSIC comprises: receive global system for mobile communications GSM signal at one's leisure in the window; When searching synchronization burst SB in the GSM signal that is receiving, described SB is carried out demodulation, realize the identification of BSIC; When not searching SB in the GSM signal that is receiving, in described GSM signal, search for the synchronizing sequence of SB, and obtain the time of occurrence of SB at next cycle according to the synchronizing sequence of described SB; Extract the SB of next cycle at the time of occurrence of described next cycle, the SB of described next cycle is carried out demodulation, realize the identification of BSIC.
Preferably, the described synchronizing sequence of searching for SB in the GSM signal comprises: the synchronizing sequence of searching for SB according to sliding correlation method in described GSM signal.
Preferably, described synchronizing sequence according to SB obtains SB and at the time of occurrence of next cycle is: according to formula T=T1+51 * GSM frame period-42 * bit period, wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.
The recognition methods of a kind of BSIC comprises: receive the GSM signal at one's leisure in the window; In described GSM signal, search for the synchronizing sequence of SB, and obtain the time of occurrence of SB at next cycle according to the synchronizing sequence of described SB; Extract the SB of next cycle at the time of occurrence of described next cycle, the SB of described next cycle is carried out demodulation, realize the identification of BSIC.
Preferably, the described synchronizing sequence of searching for SB in the GSM signal comprises: the synchronizing sequence of searching for SB according to sliding correlation method in described GSM signal.
Preferably, described synchronizing sequence according to SB obtains SB and at the time of occurrence of next cycle is: according to formula T=T1+51 * GSM frame period-42 * bit period, wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.
The recognition device of a kind of BSIC comprises: receiving element receives the GSM signal in the window between being used at one's leisure; First demodulating unit is used for when when the GSM signal that receives searches SB described SB being carried out demodulation, realizes the identification of BSIC; SB sync-sequence search unit is used for when the GSM signal that receives does not search SB, searches for the synchronizing sequence of SB in described GSM signal, and obtains the time of occurrence of the one-period of SB according to the synchronizing sequence of described SB; Second demodulating unit is used for extracting at the time of occurrence of described next cycle the SB of next cycle, and the SB of described next cycle is carried out demodulation, realizes the identification of BSIC.
Preferably, described SB sync-sequence search unit comprises: slip relevant search unit is used for according to the synchronizing sequence of sliding correlation method at described GSM signal search SB; Time calculating unit is used for according to formula T=T1+51 * GSM frame period-42 * bit period, and wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.
The recognition device of a kind of BSIC comprises: receiving element receives the GSM signal in the window between being used at one's leisure; SB sync-sequence search unit is used for the synchronizing sequence at described GSM signal search SB, and obtains the time of occurrence of SB at next cycle according to the synchronizing sequence of described SB; Demodulating unit is used for extracting at the time of occurrence of described next cycle the SB of next cycle, and the SB of described next cycle is carried out demodulation, realizes the identification of BSIC.
Preferably, described SB sync-sequence search unit comprises: slip relevant search unit is used for according to the synchronizing sequence of sliding correlation method at described GSM signal search SB; Time calculating unit is used for according to formula T=T1+51 * GSM frame period-42 * bit period, and wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.
As can be seen from the above-described embodiment, when free time window be not enough to search SB and separate timing, can further search for the synchronizing sequence of SB, utilize the periodicity of SB, synchronizing sequence according to SB calculates the time of occurrence of SB at next cycle, in the time of next cycle SB is extracted and demodulation then, guarantee the realization of BSIC.
In addition, also can directly search the synchronizing sequence of SB, utilize the periodicity of SB, calculate the time of occurrence of SB, in the time of next cycle SB be extracted and demodulation then, guarantee the realization of BSIC at next cycle according to the synchronizing sequence of SB.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of the recognition methods of a kind of BSIC of the present invention;
Fig. 2 is the flow chart of another embodiment of the recognition methods of a kind of BSIC of the present invention;
Fig. 3 is the flow chart of another embodiment of the recognition methods of a kind of BSIC of the present invention;
Fig. 4 is the structural representation of SB in the GSM frame;
Fig. 5 is the structure chart of an embodiment of the recognition device of a kind of BCIS of the present invention;
Fig. 6 is the flow chart of another embodiment of the recognition device of a kind of BSIC of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the embodiment of the invention is described in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1, it is the flow chart of an embodiment of the recognition methods of a kind of BSIC of the present invention, and this method may further comprise the steps:
Step 101: receive the GSM signal at one's leisure in the window;
Step 102: when searching SB in the GSM signal that is receiving, described SB is carried out demodulation, realize the identification of BSIC;
Step 103: when not searching SB in the GSM signal that is receiving, in described GSM signal, search for the synchronizing sequence of SB, and obtain the time of occurrence of SB at next cycle according to the synchronizing sequence of described SB;
Wherein, the described synchronizing sequence of searching for SB in the GSM signal comprises: the synchronizing sequence of searching for SB according to sliding correlation method in described GSM signal.
Need to prove that the embodiment of the invention is not limited in the GSM signal method of the synchronizing sequence of search SB, also can adopt to well known to a person skilled in the art that additive method searches for the synchronizing sequence of SB.
Step 104: extract the SB of next cycle at the time of occurrence of described next cycle, the SB of described next cycle is carried out demodulation, realize the identification of BSIC.
As can be seen from the above-described embodiment, when free time window be not enough to search SB and separate timing, can further search for the synchronizing sequence of SB, utilize the periodicity of SB, synchronizing sequence according to SB calculates the time of occurrence of SB at next cycle, in the time of next cycle SB is extracted and demodulation then, guarantee the realization of BSIC.
Embodiment two
See also Fig. 2, it is the flow chart of another embodiment of the recognition methods of a kind of BSIC of the present invention, the difference of present embodiment and embodiment one is to directly search the synchronizing sequence of SB, and carries out the identification of BSIC according to the synchronizing sequence of SB, and then this method may further comprise the steps:
Step 201: receive the GSM signal at one's leisure in the window;
Step 202: in described GSM signal, search for the synchronizing sequence of SB, and obtain the time of occurrence of SB at next cycle according to the synchronizing sequence of described SB;
Wherein, the described synchronizing sequence of searching for SB in the GSM signal comprises: the synchronizing sequence of searching for SB according to sliding correlation method in described GSM signal.
Need to prove that the embodiment of the invention is not limited in the GSM signal method of the synchronizing sequence of search SB, also can adopt to well known to a person skilled in the art that additive method searches for the synchronizing sequence of SB.
Step 203: extract the SB of next cycle at the time of occurrence of described next cycle, the SB of described next cycle is extracted and demodulation, realize the identification of BSIC.
As can be seen from the above-described embodiment, the synchronizing sequence of direct search SB utilizes the periodicity of SB, calculates the time of occurrence of SB at next cycle according to the synchronizing sequence of SB, in the time of next cycle SB is extracted and demodulation then, guarantee the realization of BSIC.
Embodiment three
At the scheme of embodiment one, detailed description TD-SCDMA/GSM dual-mode terminal to the identification of BSIC, sees also Fig. 3 under high speed business below, and it is the flow chart of another embodiment of a kind of BSIC recognition methods of the present invention, may further comprise the steps:
Step 301: terminal at one's leisure between window receive the GSM signal;
Step 302: terminal is searched for SB in the GSM signal that receives, and judges whether to search SB, if, enter step 303, if not, enter step 304;
Wherein, according to the description in the background technology, for the TD-SCDMA system, free time, the size of window depended on network side scheduling, for example the scene window of following free time at high speed business does not reach 962us, at this moment, the GSM signal that receives in the window between at one's leisure can not be finished the identification of BSIC less than SB because of search.
Step 303: terminal utilizes the free time window that SB is carried out demodulation, obtains the information bit among the SB, obtains BSIC, process ends according to the information bit among the SB;
Step 304: terminal is searched for the synchronizing sequence of SB in the GSM signal, and judges whether to search the synchronizing sequence of SB, if, enter step 305, if not, enter step 307;
Wherein, see also Fig. 4, it is the structural representation of SB in the GSM frame.In gsm system, though the SB of GSM takies a time slot, 577us altogether, according to the structure of SB in the GSM frame as can be seen, synchronizing sequence among the SB (Synchroniazation sequence) but has only 64bit=236.31us, and this flexible processing for terminal provides condition.Can obtain, can guarantee that the needed time window of synchronizing sequence of catching SB only is 621us, under the TD business model, obtaining this time window is easily.Therefore, it is bigger than the success rate that searches SB to search the success rate of the synchronizing sequence among the SB between at one's leisure in the window.
Wherein, can in described GSM signal, search for the synchronizing sequence of SB according to sliding correlation method.
But need to prove that the embodiment of the invention is not limited in the GSM signal method of the synchronizing sequence of search SB, also can adopt to well known to a person skilled in the art that additive method searches for the synchronizing sequence of SB.
Step 305: terminal obtains the time of occurrence of SB at next cycle according to the synchronizing sequence of SB;
Wherein, according to the GSM standard, FCCH (Frequency Correction Channel, frequency correction channel) and SCH be the cycle with 51 GSM frames, in one-period, FCCH issues at the 0th, 10,20,30 and 40 frames respectively, and SCH issues at the 1st, 11,21,31 and 41 frames respectively, and 51 GSM frames repeat once.Therefore, when in this cycle since free time window very little and can't search SB the time, but be easy to search the synchronizing sequence of SB, when the synchronizing sequence that utilizes SB calculates the time of occurrence of SB at next cycle, just can accurately extract and demodulation SB.
Simultaneously, can learn according to GSM frame structure shown in Figure 4, in order to obtain the time of occurrence T of SB at next cycle, at first need to obtain the time of SB in the current period appearance, calculate the time of occurrence of SB according to formula T=T1+51 * GSM frame period-42 * bit period then at next cycle, wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.Can obtain the time of the synchronizing sequence of SB in the next cycle appearance according to T1+51 * GSM frame period, according to Fig. 4 as can be seen, the synchronizing sequence of SB is arranged in the 45th bit of SB, therefore, whole SB will deduct 42 times that bit is shared at the time of occurrence of next cycle on T1+51 * GSM frame period basis, therefore, T=T1+51 * GSM frame period-42 * bit period.
Step 306: extract the SB of next cycle at the time of occurrence of next cycle, the SB of described next cycle is carried out demodulation, obtain the information bit among the SB, obtain BSIC, process ends according to the information bit among the SB.
Wherein, when arriving the time of occurrence of next cycle, the interim interruption may ongoing TD business accurately be extracted and demodulation SB with the window that sets apart.
Step 307: confirm the BSIC recognition failures, process ends.
As can be seen from the above-described embodiment, when free time window be not enough to search SB and separate timing, can further search for the synchronizing sequence of SB, utilize the periodicity of SB, synchronizing sequence according to SB calculates the time of occurrence of SB at next cycle, in the time of next cycle SB is extracted and demodulation then, guarantee the realization of BSIC.
In addition,, all TD and GSM receiver are designed to independently local vibration source generally speaking for the less worry of available free time window under the TD-SCDMA business, that is, two local vibration sources, promptly local oscillator is generally frequency mixer local oscillation signal is provided in transceiver.Because, an if shared local vibration source, when the frequency switching time of local vibration source is delta, (delta is generally about 200us), then the available free time window will further reduce 2*delta, promptly reduce the time of 400us approximately, original just nervous BSIC identification has more strengthened difficulty to the free time window for this.Therefore, at present, industry generally all adopts the mode of independent local vibration source, and this is a cost to have sacrificed cost and power consumption etc. undoubtedly.In the present embodiment, only need search for the synchronizing sequence of SB owing to realize the identifying of BSIC, the free time window that needs is few, and then make TD and the shared local vibration source of GSM receiver become possibility, reduced cost and power consumption, this has important directive significance and significant practical value to terminal and RFIC design.
Embodiment four
Corresponding with the recognition methods of above-mentioned a kind of BSIC, the embodiment of the invention also provides the recognition device of a kind of BSIC.See also Fig. 5, it is the structure chart of an embodiment of the recognition device of a kind of BSIC of the present invention, and this device comprises unit receiving element 501, first demodulating unit 502, SB sync-sequence search unit 503 and second demodulating unit 504.Operation principle below in conjunction with this device is further introduced its internal structure and annexation.
Receiving element 501 receives the GSM signal in the window between being used at one's leisure;
First demodulating unit 502 is used for when when the GSM signal that receives searches SB described SB being carried out demodulation, realizes the identification of BSIC;
SB sync-sequence search unit 503 is used for when the GSM signal that receives does not search SB, searches for the synchronizing sequence of SB in described GSM signal, and obtains the time of occurrence of the one-period of SB according to the synchronizing sequence of described SB;
Second demodulating unit 504 is used for extracting at the time of occurrence of described next cycle the SB of next cycle, and the SB of described next cycle is carried out demodulation, realizes the identification of BSIC.
Wherein, SB sync-sequence search unit 503 comprises: slip relevant search unit 5031 and time calculating unit 5032,
Slip relevant search unit 5031 is used for according to the synchronizing sequence of sliding correlation method at described GSM signal search SB;
Time calculating unit 5032 is used for according to formula T=T1+51 * GSM frame period-42 * bit period, and wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.
As can be seen from the above-described embodiment, when free time window be not enough to search SB and separate timing, can further search for the synchronizing sequence of SB, utilize the periodicity of SB, synchronizing sequence according to SB calculates the time of occurrence of SB at next cycle, in the time of next cycle SB is extracted and demodulation then, guarantee the realization of BSIC.
Embodiment five
The embodiment of the invention also provides the recognition device of a kind of BSIC.See also Fig. 6, it is the structure chart of another embodiment of the recognition device of a kind of BSIC of the present invention, and the difference of present embodiment and embodiment four is to directly search the synchronizing sequence of SB, and carries out the identification of BSIC according to the synchronizing sequence of SB.This device comprises receiving element 601, SB sync-sequence search unit 602 and demodulating unit 603.Operation principle below in conjunction with this device is further introduced its internal structure and annexation.
Receiving element 601 receives the GSM signal in the window between being used at one's leisure;
SB sync-sequence search unit 602 is used for the synchronizing sequence at described GSM signal search SB, and obtains the time of occurrence of SB at next cycle according to the synchronizing sequence of described SB;
Demodulating unit 603 is used for extracting at the time of occurrence of described next cycle the SB of next cycle, and the SB of described next cycle is carried out demodulation, realizes the identification of BSIC.
Wherein, SB sync-sequence search unit 602 comprises: slip relevant search unit 6021 and time calculating unit 6022,
Slip relevant search unit 6021 is used for according to the synchronizing sequence of sliding correlation method at described GSM signal search SB;
Time calculating unit 6022 is used for according to formula T=T1+51 * GSM frame period-42 * bit period, and wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.
As can be seen from the above-described embodiment, the synchronizing sequence of direct search SB utilizes the periodicity of SB, calculates the time of occurrence of SB at next cycle according to the synchronizing sequence of SB, in the time of next cycle SB is extracted and demodulation then, guarantee the realization of BSIC.
Need to prove, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
More than recognition methods and the device of a kind of BSIC provided by the present invention is described in detail, used specific embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the recognition methods of a base station identity code BSIC is characterized in that, comprising:
Receive global system for mobile communications GSM signal at one's leisure in the window;
When searching synchronization burst SB in the GSM signal that is receiving, described SB is carried out demodulation, realize the identification of BSIC;
When not searching SB in the GSM signal that is receiving, in described GSM signal, search for the synchronizing sequence of SB, and obtain the time of occurrence of SB at next cycle according to the synchronizing sequence of described SB;
Extract the SB of next cycle at the time of occurrence of described next cycle, the SB of described next cycle is carried out demodulation, realize the identification of BSIC.
2. method according to claim 1 is characterized in that, the described synchronizing sequence of searching for SB in the GSM signal comprises: the synchronizing sequence of searching for SB according to sliding correlation method in described GSM signal.
3. method according to claim 1 is characterized in that, described synchronizing sequence according to SB obtains SB and at the time of occurrence of next cycle is:
According to formula T=T1+51 * GSM frame period-42 * bit period, wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.
4. the recognition methods of a BSIC is characterized in that, comprising:
Receive the GSM signal at one's leisure in the window;
In described GSM signal, search for the synchronizing sequence of SB, and obtain the time of occurrence of SB at next cycle according to the synchronizing sequence of described SB;
Extract the SB of next cycle at the time of occurrence of described next cycle, the SB of described next cycle is carried out demodulation, realize the identification of BSIC.
5. method according to claim 4 is characterized in that, the described synchronizing sequence of searching for SB in the GSM signal comprises: the synchronizing sequence of searching for SB according to sliding correlation method in described GSM signal.
6. method according to claim 4 is characterized in that, described synchronizing sequence according to SB obtains SB and at the time of occurrence of next cycle is:
According to formula T=T1+51 * GSM frame period-42 * bit period, wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.
7. the recognition device of a BSIC is characterized in that, comprising:
Receiving element receives the GSM signal in the window between being used at one's leisure;
First demodulating unit is used for when when the GSM signal that receives searches SB described SB being carried out demodulation, realizes the identification of BSIC;
SB sync-sequence search unit is used for when the GSM signal that receives does not search SB, searches for the synchronizing sequence of SB in described GSM signal, and obtains the time of occurrence of the one-period of SB according to the synchronizing sequence of described SB;
Second demodulating unit is used for extracting at the time of occurrence of described next cycle the SB of next cycle, and the SB of described next cycle is carried out demodulation, realizes the identification of BSIC.
8. device according to claim 7 is characterized in that, described SB sync-sequence search unit comprises:
Slip relevant search unit is used for according to the synchronizing sequence of sliding correlation method at described GSM signal search SB;
Time calculating unit is used for according to formula T1+51 * GSM frame period-42 * bit period, and wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB.
9. the recognition device of a BSIC is characterized in that, comprising:
Receiving element receives the GSM signal in the window between being used at one's leisure;
SB sync-sequence search unit is used for the synchronizing sequence at described GSM signal search SB, and obtains the time of occurrence of SB at next cycle according to the synchronizing sequence of described SB;
Demodulating unit is used for extracting at the time of occurrence of described next cycle the SB of next cycle, and the SB of described next cycle is carried out demodulation, realizes the identification of BSIC.
10. device according to claim 9 is characterized in that, described SB sync-sequence search unit comprises:
Slip relevant search unit is used for according to the synchronizing sequence of sliding correlation method at described GSM signal search SB;
Time calculating unit is used for according to formula T=T1+51 * GSM frame period-42 * bit period, and wherein, T1 is the time of occurrence of the synchronizing sequence original position of SB, and T is the time of occurrence of SB at next cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910194532 CN101997567B (en) | 2009-08-21 | 2009-08-21 | Method and device for identifying base station identify code |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910194532 CN101997567B (en) | 2009-08-21 | 2009-08-21 | Method and device for identifying base station identify code |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101997567A true CN101997567A (en) | 2011-03-30 |
| CN101997567B CN101997567B (en) | 2013-03-06 |
Family
ID=43787258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910194532 Active CN101997567B (en) | 2009-08-21 | 2009-08-21 | Method and device for identifying base station identify code |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101997567B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014137934A1 (en) * | 2013-03-06 | 2014-09-12 | Qualcomm Incorporated | Gsm tone detection |
| CN104684065A (en) * | 2013-11-26 | 2015-06-03 | 联芯科技有限公司 | Method and device for synchronizing and measuring GSM neighboring regions in GSM exclusive-OR mode |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100761696B1 (en) * | 2006-06-13 | 2007-09-28 | 삼성전자주식회사 | Apparatus and method for transmission and reception of time information in mobile communication system |
| CN101365227B (en) * | 2007-08-10 | 2011-11-02 | 联芯科技有限公司 | Method, apparatus and mobile terminal acquiring synchronous timing of GSM adjacent cells |
| CN101415202B (en) * | 2007-10-15 | 2011-04-13 | 联芯科技有限公司 | Method and apparatus for implementing high speed business measurement between systems |
| CN101437242B (en) * | 2007-11-13 | 2010-12-15 | 联芯科技有限公司 | Method and apparatus for confirming base station district identification code of communications terminal |
-
2009
- 2009-08-21 CN CN 200910194532 patent/CN101997567B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014137934A1 (en) * | 2013-03-06 | 2014-09-12 | Qualcomm Incorporated | Gsm tone detection |
| CN104684065A (en) * | 2013-11-26 | 2015-06-03 | 联芯科技有限公司 | Method and device for synchronizing and measuring GSM neighboring regions in GSM exclusive-OR mode |
| CN104684065B (en) * | 2013-11-26 | 2018-03-30 | 联芯科技有限公司 | GSM neighbor synchronizations and measuring method and device in GSM or anomalous mode formula |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101997567B (en) | 2013-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103004267B (en) | Determine method and the device thereof of position in a wireless communication system | |
| JP7073457B2 (en) | System scan and capture | |
| US9137797B2 (en) | Techniques to manage heterogenous carrier types | |
| CN103582074B (en) | Multi-module mobile terminal and small region search method, device | |
| CN101651988B (en) | System information acquiring method, communication system and mobile terminal | |
| JP6847986B2 (en) | Signal detection method and equipment | |
| EP4161182A1 (en) | Wireless communication method and terminal | |
| CN102421156A (en) | Multi-card multi-standby mobile terminal and communication method thereof | |
| CN109565314A (en) | The receiving time combined with mark is utilized in a wireless communication system | |
| CN106792837B (en) | Uplink and downlink switching method of TD-LTE system | |
| CN105745979B (en) | The resource allocation synchronous to equipment for distributed apparatus | |
| CN101965033B (en) | Global system for mobile communication (GSM) neighbor cell searching method for dual-module terminal and dual-module terminal | |
| CN101959198B (en) | Method for searching GSM (Global System for Mobile Communications) adjacent zone by dual-mode terminal and dual-mode terminal | |
| JP2006524468A (en) | Multimode terminal time and frequency synchronization method | |
| CN101997567B (en) | Method and device for identifying base station identify code | |
| CN116846426A (en) | Clock synchronization method and device | |
| CN108471614A (en) | A kind of method for sending information and device | |
| CN101895969B (en) | Mobile terminal and network searching method thereof | |
| CN105634542A (en) | TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) multi-cell searching method | |
| CN103796341B (en) | Mobile terminal, mobile-terminal frame position determining method and device, and mobile-terminal frame reception method | |
| CN103313276B (en) | The method and apparatus of cell blind Detecting | |
| CN102761858A (en) | Dual-mode single-antenna terminal and radio sharing control method thereof | |
| CN110493761A (en) | A kind of Bluetooth communication method, mobile terminal and storage medium | |
| CN101534151B (en) | Time sequence synchronicity control method and mobile device | |
| CN107872841B (en) | GSM cell synchronization method and device under LTE + WCDMA dual-card LTE packet switching and mobile terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |