CN101820637B - Measurement method of time division-synchronous code division multiple access system and dual mode terminal - Google Patents
Measurement method of time division-synchronous code division multiple access system and dual mode terminal Download PDFInfo
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Abstract
The invention relates to the communication field, disclosing a measurement method of a time division-synchronous code division multiple access system and a dual mode terminal. In the invention, the dual mode terminal firstly measures the RSSI of each TD-SCDMA frequency point, and compares the RSSI values of the TD-SCDMA frequency points with a threshold value to select the RSSI value of one TD-SCDMA frequency point which is higher than the threshold value when initiating measurement on the TD-SCDMA system periodically. The selected frequency point is detected by a training sequence code and measured by RSCP, and synchronous maintenance is carried out on a TD-SCDMA subdistrict according to the RSCP measurement result, thus saving power consumption and effectively ensuring accuracy of the TD-SCDMA system measurement at the same time.
Description
Technical field
The present invention relates to the communications field, particularly the technology of the isosystem measurement in the communications field.
Background technology
Various types of wireless communication systems have appearred in the continuous development along with the communication technology, like global system for mobile communications (Global System for Mobile communication; Be called for short " GSM "), WCDMA (Wideband Code Division Multiple Access is called for short " WCDMA "); TD SDMA (Time Division Synchronous Code Division Multiple Access is called for short " TD-SCDMA "), micro-wave access to global intercommunication (Worldwide Interoperability for Microwave Access; Be called for short " WiMAX "); Long Term Evolution (Long Term Evolution is called for short " LTE "), bluetooth; China Mobile multimedia broadcasting (China Mobile Multimedia Broadcasting is called for short " CMMB ") or the like.
Wherein, The subframe structure of TD-SCDMA is as shown in Figure 1; The TD-SCDMA frame of 1 10ms can be divided into the subframe of 2 5ms, and the subframe of each 5ms comprises 7 time slots (time slot 0 to time slot 6) and descending pilot frequency time slot DwPTS, protects GP, uplink pilot time slot UpPTS at interval.
At present, many terminals (like 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..In order to support the mode switch of two kinds of systems, must support the measurement of different system.
Owing at present be in GSM pattern following time when the GSM/TD-SCDMA dual-mode terminal; The GSM network is only broadcasted the TD-SCDMA frequency; And do not broadcast the mode of TD-SCDMA sub-district, so dual-mode terminal is mainly initiated the measurement to the TD-SCDMA system through following two kinds of schemes in the GSM network:
Mode one: the blind affirmation of searching midamble (training sequence code) under i.e. this frequency of carrying out the sub-district according to the TD-SCDMA frequency; And to periodically confirm; Carry out the received signal code power measurement of (Received Signal Code Power is called for short " RSCP ") according to the training sequence code of confirming;
Mode two: the TD-SCDMA frequency is received measurement but not the measurement of RSCP of signal strength indication (Receiving SignalStrength Indicator is called for short " RSSI "), therefore need not to confirm the training sequence code of each frequency.
Yet; Inventor of the present invention finds, for mode one, because according to the requirement of China Mobile at present; The TD-SCDMA system frequency points of configuration is 9 at most under gsm system; The midamble sign indicating number that carries out all frequencies detects, and the affirmation of periodic midamble sign indicating number, and therefore the power consumption increase to the terminal is huge.For scheme two; Can bring and realize advantages such as simple, low in energy consumption though measure the TD-SCDMA system through the mode that adopts RSSI; Measurement so that the mode of RSSI realizes is not accurate enough; When the mode switch that takes place between different system,, and can not satisfy testing requirement in the test of all kinds of certainties of measurement because the inaccuracy of measuring causes handoff failure easily.
Summary of the invention
The object of the present invention is to provide a kind of method of measurement and dual-mode terminal of TDS-CDMA system, make dual-mode terminal when saving power consumption, effectively guarantee the accuracy of TD-SCDMA systematic survey.
For solving the problems of the technologies described above, execution mode of the present invention provides a kind of method of measurement of TDS-CDMA system, comprises following steps:
The A dual-mode terminal receives the measurement of signal strength indication RSSI respectively to each TD SDMA TD-SCDMA frequency of broadcasting;
The RSSI value of each TD-SCDMA frequency that B will measure compares with first threshold value respectively; Choose the TD-SCDMA frequency of RSSI value greater than first threshold value; Wherein, first threshold value is to be used to judge whether the pairing cell signal of TD-SCDMA frequency satisfies different system and switch the threshold value that requires;
C carries out the detection of training sequence code respectively to each TD-SCDMA frequency of choosing; According to detected training sequence code the measurement of received signal code power RSCP is carried out in the sub-district under the pairing TD-SCDMA frequency of this training sequence code, and carry out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP;
Periodically execution in step A, if there be not the TD-SCDMA frequency of RSSI value greater than first threshold value, then waits for to next cycle entering steps A in step B to step C.
Execution mode of the present invention also provides a kind of dual-mode terminal, comprises:
The rssi measurement module is used for periodically each TD SDMA TD-SCDMA frequency of broadcasting being received respectively the measurement of signal strength indication RSSI;
Choose module; The RSSI value of each the TD-SCDMA frequency that is used for the rssi measurement module is measured compares with first threshold value respectively; Choose the TD-SCDMA frequency of RSSI value greater than first threshold value; If there be not the TD-SCDMA frequency of RSSI value greater than first threshold value; Then choose module and wait for the RSSI value that receives each TD-SCDMA frequency that the rssi measurement module measures in the next cycle, wherein, first threshold value is to be used to judge whether the pairing cell signal of TD-SCDMA frequency satisfies different system and switch the threshold value that requires;
The training sequence code detection module is used for carrying out the detection of training sequence code respectively to choosing each TD-SCDMA frequency that module chooses;
The RSCP measurement module is used for according to the detected training sequence code of training sequence code detection module the measurement of received signal code power RSCP being carried out in the sub-district under the pairing TD-SCDMA frequency of this training sequence code;
Synchronization module is used for carrying out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:
Dual-mode terminal is when the measurement of periodically initiating the TD-SCDMA system; Measure the RSSI of all TD-SCDMA frequencies earlier; Through the RSSI value of each TD-SCDMA frequency and one being used to judge whether cell signal satisfies different system and switch first threshold value that requires and do comparison, selects the TD-SCDMA frequency that the RSSI value is higher than first threshold value.Because in the TD-SCDMA system; The measurement result of RSSI (is meant here the training sequence place time slot of TD-SCDMA is measured more than or equal to the measurement result of RSCP; Promptly time slot 0 is measured; As follows), therefore carrying out TD-SCDMA frequency sub-district down that RSCP measures at needs should be that signal satisfies and switches under the situation that requires (promptly greater than first threshold value), signal satisfies the RSSI of the TD-SCDMA frequency that switches requirement also must be greater than first threshold value.Selected frequency is carried out the detection of training sequence code, the measurement of RSCP, and carry out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP.Owing to be not to be that all TD-SCDMA frequencies are carried out the search of training sequence code, the measurement of RSCP; But the TD-SCDMA frequency after filtering is carried out the detection of training sequence code, the measurement of RSCP; Therefore can reduce the number of search TD frequency greatly, thus the power consumption of effectively having saved the terminal.Through will measuring classification, will uprise above the measurement priority of the TD-SCDMA frequency of thresholding, the frequency of high priority is carried out RSCP measure.Since gravity treatment or to switch different system (referring to TD-SCDMA) most important parts be exactly to guarantee that the strongest sub-district can be frequent and measured exactly; Therefore measure through detection, the RSCP that the high frequency of priority is carried out training sequence code; Can when saving power consumption, effectively guarantee the accuracy of TD-SCDMA systematic survey.In addition, owing to, can guarantee that the co-frequency cell of TD-SCDMA can be by timely discovery through periodically the TD-SCDMA system being measured.
Further, first threshold value is the gravity treatment threshold value of broadcasting in the system message.Because the measurement purpose of different system mainly is exactly to guarantee that the switching between different system can carry out smoothly; Therefore with the gravity treatment threshold value (the gravity treatment threshold value of broadcasting among the system message 2quater like GSM) broadcasted in the system message as first threshold value, can guarantee that it is that signal satisfies and switches the sub-district that requires that selected needs carry out sub-district that RSCP measures.
Further; Each TD-SCDMA frequency of not choosing is carried out the measurement of RSSI respectively; If the RSSI value that measures greater than second threshold value, then to greater than the pairing TD-SCDMA frequency of the RSSI value of second threshold value, is carried out the detection of training sequence code; According to detected training sequence code the measurement of RSCP is carried out in the sub-district under this TD-SCDMA frequency, and carry out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP.The frequency of measure R SSI is still had an opportunity to transfer to RSCP and is measured, the omission of the TD-SCDMA frequency that can effectively avoid searching for.
Wherein, second threshold value more than or equal to the cell measurement under each TD-SCDMA frequency of choosing to the RSCP value in maximum, and more than or equal to first threshold value.Because in the TD-SCDMA system; The measurement result of RSSI is more than or equal to the measurement result of RSCP; That is to say; If the RSSI of TD-SCDMA frequency A is less than the RSCP of certain sub-district of TD-SCDMA frequency B, then the RSCP of all TD sub-districts must be less than the RSCP of this sub-district under the frequency B under the A frequency.Therefore the frequency of measure R SSI converts RSCP into and measures, the condition that needs to satisfy be the RSSI value measured greater than the maximum in the RSCP value that measures, and greater than first threshold value, thereby effectively controlled the power consumption that the terminal is used to measure the TD-SCDMA system.
Further, need carry out M time the detection of the descending synchronous code of TD-SCDMA frequency, M is the integer more than or equal to 1; According to detected descending synchronous code, also need carry out P time the detection of corresponding training sequence code, for more than or equal to 1 integer.Can effectively guarantee the accuracy measured.
Description of drawings
Fig. 1 is the subframe structure sketch map according to TD-SCDMA in the prior art;
Fig. 2 is the method for measurement flow chart according to the TDS-CDMA system of first embodiment of the invention;
Fig. 3 is the method for measurement flow chart according to the TDS-CDMA system of second embodiment of the invention;
Fig. 4 is the dual-mode terminal structural representation according to third embodiment of the invention.
Embodiment
In following narration, many ins and outs have been proposed in order to make the reader understand the application better.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on the 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 object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that execution mode of the present invention is done to describe in detail further below.
First embodiment of the invention relates to a kind of method of measurement of TDS-CDMA system, and idiographic flow is as shown in Figure 2.
In step 201, dual-mode terminal utilizes the mode of energy window to obtain the position of TD-SCDMA downlink frame.
Then; In step 202; Dual-mode terminal is utilized in the position of the TD-SCDMA downlink frame that obtains in the step 201, all frequencies is carried out primary energy detect, and promptly the TD-SCDMA frequency of all broadcasting is carried out the RSSI energy measuring of the midamble position of TS0 (time slot 0).The measurement of RSSI can realize in the prior art, repeat no more at this.
Then, in step 203, the RSSI value of each the TD-SCDMA frequency that measures is compared with first threshold value respectively, choose the TD-SCDMA frequency of RSSI value greater than first threshold value.Wherein, first threshold value is to be used to judge whether the pairing cell signal of TD-SCDMA frequency satisfies different system and switch the threshold value that requires, and is the gravity treatment threshold value of broadcasting among the gsm system message 2quater (being the threshold value of TDD_OFFSET) like first threshold value.If there is not to surpass the TD-SCDMA frequency (frequency points of promptly choosing is 0) of first threshold value, then after wait for a period of time (like step 203 '), get back to step 202, wait for that promptly one-period carries out the rssi measurement of all frequencies again.If the frequency points of choosing greater than 0, then gets into step 204.
Then, in step 204, utilize relevant method that selected frequency (the TD-SCDMA frequency that promptly surpasses thresholding) is carried out the detection of 32 SYNC_DL (descending synchronous code) one by one, for guaranteeing accuracy, this step is M time, M＞=1.The detection of the TD-SCDMA frequency being carried out SYNC_DL belongs to prior art, repeats no more at this.
Then, in step 205, surpass the TD-SCDMA frequency of first threshold value for each; If find corresponding SYNC_DL (being made as N), then confirm N corresponding N midamble sign indicating number, for guaranteeing accuracy through N SYNC_DL; This step is P time, P＞=1.
Then, in step 206, according to detected training sequence code the pairing TD-SCDMA frequency of this training sequence code is carried out the measurement of received signal code power RSCP, and carry out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP.That is to say, the TD-SCDMA frequency of confirming midamble is carried out RSCP measure, and carry out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP simultaneously.Identical to keeping synchronously of TD-SCDMA sub-district with prior art, as repeating no more at this through receiving the synchronous of descending pilot frequency time slot realization and TD-SCDMA sub-district.
Periodically repeat above-mentioned steps 202 to 206, can carry out upgrading in time of midamble sign indicating number to guarantee the TD frequency that surpasses the gravity treatment threshold value.Because regulation measures the TD-SCDMA sub-district at the latest in 30s in existing protocol, therefore in this execution mode, the cycle is set to 30 seconds, can be compatible mutually with prior art better.
Because it is exactly to guarantee that the strongest sub-district can be frequent and measured exactly that gravity treatment is perhaps switched different system (referring to TD-SCDMA) most important parts.Under numerous frequencies, just need to divide the strategy of priority so.Because according to the requirement of China Mobile at present; The TD-SCDMA system frequency points of configuration is 9 at most under gsm system; Therefore must cause numerous frequencies by turns, just become the major issue that measurement is controlled because of the TD-SCDMA that causes by turns extends measuring period.Therefore, branch priority just seems very necessary.In this execution mode,, greatly reduce the number of search TD-SCDMA frequency owing to added TD gravity treatment thresholding.Owing to need not search for the midamble sign indicating number of all TD-SCDMA frequencies; Therefore (this mainly is because the expense of measure R SCP is more a lot of greatly than the expense of measure R SSI can effectively to save power consumption; Effectively the TD frequency of restriction measure R SCP then can effectively control power consumption, and the measuring frequency of strong frequency).And; Because in the TD-SCDMA system; The measurement result of RSSI is more than or equal to the measurement result of RSCP; Therefore carrying out TD-SCDMA frequency that RSCP measures at needs should be that signal satisfies and switches under the situation that requires (promptly greater than the gravity treatment threshold value), and signal satisfies the RSSI that switches the TD-SCDMA frequency that requires also must be greater than the gravity treatment threshold value.Therefore through measuring classification, the measurement priority that surpasses the TD-SCDMA frequency of gravity treatment thresholding uprises, and it is carried out RSCP measure, thereby improved accuracy of measurement.In addition, because therefore the frequency of only broadcasting TD-SCDMA under the present GSM, need periodically be searched for the TD-SCDMA frequency of having broadcasted, can come to light with the co-frequency cell of guaranteeing TD-SCDMA.
This execution mode can be applicable to the GSM/TD-SCDMA dual-mode terminal and is in GSM pattern following time, the measurement to TD-SCDMA of initiation.But, be appreciated that this execution mode is not only effective to the GSM/TD-SCDMA dual-mode terminal, and also effective need measure the TD-SCDMA sub-district to the terminal under other any non-TD-SCDMA patterns the time.
In addition, what deserves to be mentioned is that in this execution mode, first threshold value is the gravity treatment threshold value of broadcasting in the system message.Because the measurement purpose of different system mainly is exactly to guarantee that the switching between different system can carry out smoothly; Therefore with the gravity treatment threshold value broadcasted in the system message as first threshold value, can guarantee that it is that signal satisfies the frequency that switches the sub-district that requires that selected needs carry out the TD-SCDMA frequency that RSCP measures.
In addition, be appreciated that first threshold value and nonessential be the gravity treatment threshold value of broadcasting in the system message, also can be the value in next preset range on this gravity treatment threshold value, as than high 3db of this gravity treatment threshold value or low 3db etc.That is to say that first threshold value can be a threshold value that is obtained according to according to the gravity treatment threshold value of broadcasting in the system message, also can be other threshold values that are provided with.
Second embodiment of the invention relates to a kind of method of measurement of TDS-CDMA system.
Second execution mode improves on the basis of first execution mode; Main improvements are: when each TD-SCDMA frequency of choosing is carried out the measurement of RSCP, simultaneously all the other each TD-SCDMA frequencies (being the TD-SCDMA frequency that RSSI is less than or equal to the gravity treatment threshold value) of not choosing are carried out the measurement of RSSI respectively.If the RSSI value that each TD-SCDMA frequency of not choosing is measured is greater than second threshold value; Then to greater than the pairing TD-SCDMA frequency of the RSSI value of second threshold value; Carry out the detection of training sequence code; According to detected training sequence code this TD-SCDMA frequency is carried out the measurement of RSCP, and carry out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP, as shown in Figure 3.Wherein, second threshold value is more than or equal to the maximum in the RSCP value of each TD-SCDMA frequency of choosing, and more than or equal to first threshold value.Such as, if the maximum in the RSCP value of each TD-SCDMA frequency of choosing more than or equal to first threshold value, then second threshold value is the maximum in the RSCP value of each TD-SCDMA frequency of choosing; If the maximum in the RSCP value of each TD-SCDMA frequency of choosing is less than first threshold value, then second threshold value is first threshold value.
In this execution mode, the frequency of each the TD-SCDMA frequency that is not selected still has an opportunity to carry out the measurement of RSCP, the omission of the TD-SCDMA frequency that can effectively avoid searching for.
In addition; Because in the TD-SCDMA system; The measurement result of RSSI is more than or equal to the measurement result of RSCP; That is to say, if the RSSI of TD-SCDMA frequency A less than the RSCP of certain sub-district of TD-SCDMA frequency B, the inevitable RSCP of the RSCP of all TD sub-districts under the A frequency then less than this sub-district under the frequency B.Therefore; Maximum in the RSCP value of each TD-SCDMA frequency that second threshold value is set to choose; That is to say that the frequency of measure R SSI converts RSCP into and measures, the condition that needs to satisfy is that the RSSI value measured is greater than the maximum in the RSCP value that measures; And, thereby effectively controlled the power consumption that the terminal is used to measure the TD-SCDMA system greater than first threshold value.
Each method execution mode of the present invention all can be realized with 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 perhaps removable medium or the like).Equally; Memory can for example be programmable logic array (Programmable Array Logic; Abbreviation " PAL "), random access memory (Random Access Memory; Abbreviation " RAM "), programmable read only memory (Programmable Read Only Memory is called for short " PROM "), read-only memory (Read-Only Memory is called for short " ROM "), Electrically Erasable Read Only Memory (Electrically Erasable Programmable ROM; Abbreviation " EEPROM "), disk, CD, digital versatile disc (Digital Versatile Disc is called for short " DVD ") or the like.
Third embodiment of the invention relates to a kind of dual-mode terminal.As shown in Figure 4, this dual-mode terminal comprises:
The rssi measurement module is used for periodically each TD SDMA TD-SCDMA frequency of broadcasting being received respectively the measurement of signal strength indication RSSI.
Choose module; The RSSI value of each the TD-SCDMA frequency that is used for the rssi measurement module is measured compares with first threshold value respectively; Choose the TD-SCDMA frequency of RSSI value greater than first threshold value; If there be not the TD-SCDMA frequency of RSSI value, then choose module and wait for the RSSI value that receives each TD-SCDMA frequency that the rssi measurement module measures in the next cycle greater than first threshold value.Wherein, first threshold value is to be used to judge whether the pairing cell signal of TD-SCDMA frequency satisfies different system and switch the threshold value that requires, such as first threshold value is the gravity treatment threshold value of broadcasting in the system message.
The training sequence code detection module is used for carrying out the detection of training sequence code respectively to choosing each TD-SCDMA frequency that module chooses.
The RSCP measurement module is used for according to the detected training sequence code of training sequence code detection module the measurement of received signal code power RSCP being carried out in the sub-district under the pairing TD-SCDMA frequency of this training sequence code.
Synchronization module is used for carrying out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP.
Wherein, the training sequence code detection module comprises following submodule:
First detection sub-module is used for carrying out the detection of descending synchronous code respectively to choosing each TD-SCDMA frequency that module chooses, and the detection of descending synchronous code is carried out M time, and M is the integer more than or equal to 1.
Second detection sub-module is used for detecting corresponding training sequence code according to the detected descending synchronous code of first detection sub-module, and the detection of training sequence code is carried out P time, and P is the integer more than or equal to 1.
Be not difficult to find that first execution mode is and the corresponding method execution mode of this execution mode, this execution mode 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 this execution mode, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in this execution mode 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: the rssi measurement module also is used for carrying out the measurement of RSSI respectively to choosing all the other each TD-SCDMA frequencies that module do not choose; If the RSSI value that measures greater than second threshold value, then indicates the training sequence code detection module to greater than the pairing TD-SCDMA frequency of the RSSI value of second threshold value, carry out the detection of training sequence code; After detecting training sequence code, trigger the RSCP measurement module.
Wherein, second threshold value more than or equal to the cell measurement under each TD-SCDMA frequency of choosing to the RSCP value in maximum, and more than or equal to first threshold value.Such as, if the maximum in the RSCP value that measures more than or equal to first threshold value, then second threshold value is the maximum in the RSCP value that measures; If the maximum in the RSCP value that measures is less than first threshold value, then second threshold value is first threshold value.
Be not difficult to find that second execution mode is and the corresponding method execution mode of this execution mode, this execution mode 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 this execution mode, in order to reduce repetition, repeats no more here.Correspondingly, the correlation technique details of mentioning in this execution mode 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 a logical block, and 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 realized 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 with solving the not too close unit of 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 through reference some preferred implementation of the present 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 form with on the details, and without departing from the spirit and scope of the present invention.
Claims (11)
1. the method for measurement of a TDS-CDMA system is characterized in that, comprises following steps:
The A dual-mode terminal receives the measurement of signal strength indication RSSI respectively to each TD SDMA TD-SCDMA frequency of broadcasting;
The RSSI value of each TD-SCDMA frequency that B will measure compares with first threshold value respectively; Choose the TD-SCDMA frequency of RSSI value greater than said first threshold value; Wherein, said first threshold value is to be used to judge whether the pairing cell signal of TD-SCDMA frequency satisfies different system and switch the threshold value that requires;
C carries out the detection of training sequence code respectively to said each TD-SCDMA frequency of choosing; According to detected training sequence code the measurement of received signal code power RSCP is carried out in the sub-district under the pairing TD-SCDMA frequency of this training sequence code, and carry out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP;
Periodically carry out said steps A, in said step B,, then wait for to next cycle getting into said steps A if there be not the TD-SCDMA frequency of RSSI value greater than said first threshold value to step C.
2. the method for measurement of TDS-CDMA system according to claim 1 is characterized in that, said first threshold value is the gravity treatment threshold value of broadcasting in the system message.
3. the method for measurement of TDS-CDMA system according to claim 1 is characterized in that, also comprises following steps among the said step C:
Each TD-SCDMA frequency of not choosing is carried out the measurement of RSSI respectively; If the RSSI value that measures is greater than second threshold value; Then to greater than the pairing TD-SCDMA frequency of the RSSI value of said second threshold value; Carry out the detection of training sequence code, the measurement of RSCP is carried out in the sub-district under this TD-SCDMA frequency, and carry out keeping synchronously of TD-SCDMA sub-district according to the measurement result of RSCP according to detected training sequence code;
Wherein, said second threshold value more than or equal to the cell measurement under said each TD-SCDMA frequency of choosing to the RSCP value in maximum, and more than or equal to said first threshold value.
4. the method for measurement of TDS-CDMA system according to claim 3 is characterized in that,
If the maximum in the said RSCP value is more than or equal to said first threshold value, then said second threshold value is the maximum in the said RSCP value;
If the maximum in the said RSCP value is less than said first threshold value, then said second threshold value is said first threshold value.
5. according to the method for measurement of each described TDS-CDMA system in the claim 1 to 4, it is characterized in that, in the step of the said detection of each TD-SCDMA frequency of choosing being carried out training sequence code respectively, comprise following substep:
Each TD-SCDMA frequency of choosing is carried out the detection of descending synchronous code respectively, and the detection of said descending synchronous code is carried out M time, and said M is the integer more than or equal to 1;
Detect corresponding training sequence code according to detected descending synchronous code, the detection of said training sequence code is carried out P time, and said P is the integer more than or equal to 1.
6. according to the method for measurement of each described TDS-CDMA system in the claim 1 to 4, it is characterized in that the said cycle is 30 seconds.
7. a dual-mode terminal is characterized in that, comprises:
The rssi measurement module is used for periodically each TD SDMA TD-SCDMA frequency of broadcasting being received respectively the measurement of signal strength indication RSSI;
Choose module; The RSSI value of each the TD-SCDMA frequency that is used for said rssi measurement module is measured compares with first threshold value respectively; Choose the TD-SCDMA frequency of RSSI value greater than said first threshold value; If there be not the TD-SCDMA frequency of RSSI value greater than said first threshold value; The then said module of choosing is waited for the RSSI value that receives each TD-SCDMA frequency that said rssi measurement module measures in the next cycle, and wherein, said first threshold value is to be used to judge whether the pairing cell signal of TD-SCDMA frequency satisfies different system and switch the threshold value that requires;
The training sequence code detection module is used for choosing each TD-SCDMA frequency that module chooses and carrying out the detection of training sequence code respectively said;
The RSCP measurement module is used for according to the detected training sequence code of said training sequence code detection module the measurement of received signal code power RSCP being carried out in the sub-district under the pairing TD-SCDMA frequency of this training sequence code;
Synchronization module is used for carrying out keeping synchronously of TD-SCDMA sub-district according to the measurement result of said RSCP.
8. dual-mode terminal according to claim 7 is characterized in that, said first threshold value is the gravity treatment threshold value of broadcasting in the system message.
9. dual-mode terminal according to claim 7; It is characterized in that said rssi measurement module also is used for choosing all the other each TD-SCDMA frequencies that module do not choose and carrying out the measurement of RSSI respectively said, if the RSSI value that measures is greater than second threshold value; Then indicate said training sequence code detection module to greater than the pairing TD-SCDMA frequency of the RSSI value of said second threshold value; Carry out the detection of training sequence code, after detecting training sequence code, trigger said RSCP measurement module; Wherein, said second threshold value more than or equal to the cell measurement under said each TD-SCDMA frequency of choosing to the RSCP value in maximum, and more than or equal to said first threshold value.
10. dual-mode terminal according to claim 9 is characterized in that,
If the maximum in the said RSCP value is more than or equal to said first threshold value, then said second threshold value is the maximum in the said RSCP value;
If the maximum in the said RSCP value is less than said first threshold value, then said second threshold value is said first threshold value.
11. dual-mode terminal according to claim 7 is characterized in that, said training sequence code detection module comprises following submodule:
First detection sub-module is used for choosing each TD-SCDMA frequency that module chooses and carrying out the detection of descending synchronous code respectively said, and the detection of said descending synchronous code is carried out M time, and said M is the integer more than or equal to 1;
Second detection sub-module is used for detecting corresponding training sequence code according to the detected descending synchronous code of said first detection sub-module, and the detection of said training sequence code is carried out P time, and said P is the integer more than or equal to 1.
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| CN102448134B (en) * | 2010-10-12 | 2015-09-16 | 中国移动通信集团广西有限公司 | A kind of method and system being switched to TD-SCDMA network fast |
| CN102137426B (en) * | 2011-04-28 | 2013-07-17 | 意法·爱立信半导体（北京）有限公司 | Method and device for measuring power of time division-synchronous code division multiple access (TD-SCDMA) system in heterogeneous system |
| CN102421121B (en) * | 2011-07-29 | 2014-09-17 | 展讯通信（上海）有限公司 | Measurement method and measurement device for TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) neighbourhood by virtue of mobile terminal |
| CN103096434B (en) * | 2011-11-08 | 2016-06-15 | 联芯科技有限公司 | The method of terminal cell search |
| US8886208B2 (en) * | 2012-03-19 | 2014-11-11 | Qualcomm Incorporated | Method and apparatus of simultaneously monitoring GSM channels |
| CN103533605B (en) * | 2012-07-04 | 2017-08-08 | 中国移动通信集团公司 | The frequency sweeping method and device of a kind of user terminal |
| WO2015077974A1 (en) * | 2013-11-29 | 2015-06-04 | Qualcomm Incorporated | Methods and apparatus for interference mitigation in wireless communication system |
| WO2015109435A1 (en) * | 2014-01-21 | 2015-07-30 | 华为技术有限公司 | Frequency channel number measurement control method, base station, and user equipment |
| CN107105461A (en) * | 2017-05-09 | 2017-08-29 | 深圳市万普拉斯科技有限公司 | Different grid reselecting method, device and mobile terminal |
| CN109391952A (en) * | 2017-08-07 | 2019-02-26 | 大唐移动通信设备有限公司 | Method, apparatus, electronic equipment and the storage medium of measuring configuration |
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