CN101635977A - Method for completing time division neighbor measurement based on idle frame - Google Patents
Method for completing time division neighbor measurement based on idle frame Download PDFInfo
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Abstract
The invention discloses a method for completing TD neighbor measurement based on a GSM idle frame, comprising the following steps: A. searching TD system timing with the GSM idle frame; B. according to the TD system timing, computing the observation time difference OTD of a subdistrict to be measured; and C. receiving the midamble correlative data of the subdistrict with the idle frame, and computing the receiving signal code power of the subdistrict under a frequency point. Based on the measurement request of a protocol, the method analyzes GSM multiframe structure, gives a specific realizing method for measuring the TD neighbor under a GSM/GPRS connection state based on an Idle frame with the idle frame appointed by the protocol, and effectively meets a real-time requirement, namely, the TD measurement is completed within 3s.
Description
Technical field
The present invention relates to GSM (Global System For Mobile Communications, global system for mobile telecommunications)/GPRS (Gerneral Packer Radio Service, GPRS) finishes TD (Time Division based on Idle frame (idle frame) under the connected state, time-division) technical field of nearby region measurement, the present invention is specifically related to a kind of method of finishing the TD nearby region measurement based on idle frame.
Background technology
Single antenna is to want time-multiplexed same radio-frequency channel between TD-SCDMA (Time Division-Synchronous Code DivisionMultiple Access, Time Division-Synchronous Code Division Multiple Access inserts) and the GSM pattern; In addition, realize that the key of bimodulus is, when terminal resides in arbitrary pattern, all need the adjacent sub-district relevant parameter of another pattern of periodic measurement, and optionally carry out sub-district gravity treatment and switching.Realize that bimodulus is two and cut that GSM/TD-SCDMA system measurements is exactly to need key subjects solving.Relatively easy for the realization TD nearby region measurement under the GSM IDLE attitude (Idle state), the GSM radio frequency is idle a lot, and it is very abundant to carry out the TD Measuring Time.But for GSM/GPRS (GerneralPacker Radio Service, GPRS) can only utilize GSM Idle frame (idle frame) to carry out the anomalous mode formula under the connected state and measure (comprising that TD measures), promptly in 3s, realize maximum 3 frequency 64TD adjacent area RSCP (Received Signal Code Power, received signal code power) measurement does not still have clear and definite codes and standards to use for reference at present.
In addition, terminal needs to finish many work of self pattern under the GSM/GPRS connected state, and what its logic channel composite type adopted is the multi-frame structure of 104 frames.From multi-frame structure as can be seen, agreement is specified " idle frame " can be used to carry out GSM/TD-SCDMA system measurements and few.The agreement regulation is preferentially carried out GSM adjacent area Bsic (base station identity code) and is confirmed on idle frame, the RSCP that carries out TD-SCDMA on 25 idle frames not doing the Bsic affirmation measures, and promptly agreement has clear and definite requirement to the real-time of system's measurements, promptly finishes in the 3s.
As seen, also do not have in the prior art only to realize the concrete grammar and strategy that TD-SCDMA measures under the GSM/GPRS system connected state based on 25 Idle frames, the Chinese patent publication number is that " method and the device of gsm system and TD-SCDMA system initial synchronisation " patent application of CN101110633 has been analyzed theoretically and cannot be detected TD with idle frame regularly (TD is a synchro system in addition, search out the frame head of a TD sub-district, promptly obtain the TD system regularly), detect with n idle time slot, may in the cycle of 13 frames, can repeated detection arrive DwPTS (descending pilot frequency time slot).This technical scheme has only been analyzed and can't have been detected TD on 1 idle frame (4.615ms) regularly, and does not analyze gsm protocol, does not recognize the idle window that centers on the Idle frame much larger than 5ms, can satisfy TD and measure needs.In the middle of the reality, utilizing idle time slot method is method outside a kind of agreement, implements more complicated; And, do not utilize the Idle frame, and only utilize this a kind ofly to carry out TD based on the Idle time slot method and regularly seek, detect DwPTS (descending pilot frequency time slot) and expend time in longlyer, can't satisfy the system real time requirement.
As seen there is certain problem in the prior art, need asks the TD nearby region measurement method under the further research GSM/GPRS connected state.
Summary of the invention
The object of the present invention is to provide and a kind ofly finish the method for time division neighbor measurement based on idle frame, it is mainly used in the TD-SCDMA/GSM dual mode system, and has provided based on Idle frame (idle frame) and finish the specific implementation method that TD measures.
For achieving the above object, the present invention adopts following technical scheme:
The invention provides and a kind ofly finish the method for time division neighbor measurement, said method comprising the steps of based on idle frame:
A, utilize idle frame (Idie frame) to seek the TD system regularly;
B, according to the TD system regularly measures the relative TD in all sub-districts system observed time difference (OTD) regularly under the frequency to be measured;
C, utilize idle frame to receive the data of this frequency, calculate the received signal code power (RSCP) of all sub-districts under this frequency.
Described method wherein, comprises a thick synchronizing process in the described steps A, this thick synchronizing process may further comprise the steps:
A1, automatic gain control (AGC) coefficient is set is first threshold, receives data and storage from described frequency to be measured, judges according to the data of storage whether the TD system regularly searches successfully, if the position of TD system timing is then determined in success.
Described method, wherein, described thick synchronizing process is further comprising the steps of:
A2, when the judged result of described steps A 1 for not the time, adjusting automatic gain control (AGC) coefficient is second threshold value, reception judges according to the data of storage whether the TD system regularly searches successfully from the data and the storage of described frequency to be measured, if TD system position is regularly then determined in success; If unsuccessful, then switch to next frequency to be measured, and be back to steps A.
Described method wherein, also comprises a smart synchronizing process in the described steps A, after thick synchronizing process judges to search successfully, change this essence synchronizing process over to, and this essence synchronizing process may further comprise the steps:
The data computation that receives according to thick synchronizing process obtains revised automatic gain control coefrficient, and reset automatic gain according to result of calculation and control (AGC) coefficient, reception is from the descending synchronous code SYNC_DL data of described frequency to be measured and store, and determines TD system position regularly according to these data.
Described method, wherein, in the described smart synchronizing process, the position of correlation peak maximum of getting the down-going synchronous code data of frequency to be measured and local down-going synchronous code data is as TD system position regularly.
Described method wherein, in the described steps A 1, repeats the process of at least twice reception data.
Described method, wherein, the data that described step C receives are the sub-district basic training sequences under the frequency to be measured.
Described method, wherein, after described steps A obtained the timing of TD system, described step B generated the relative TD in all sub-districts system observed time difference regularly in other frequencies to be measured with described step C by synchronous tracking technology, and calculates the received signal code power (RSCP) of all sub-districts.
Beneficial effect: the present invention is from the measurement requirement of agreement, analyzed the GSM multi-frame structure, utilized the idle frame of agreement appointment, provided based on the Idle frame and realize the GSM/GPRS connected state specific implementation strategy of measurement TD down, effectively satisfy the requirement of real-time, promptly in 3s, finish TD and measure.
Description of drawings
Fig. 1 is the flow chart of the inventive method;
Fig. 2 is under the GSM/GPRS connected state, does not obtain regularly RSCP computational process schematic diagram of TD;
Fig. 3 is a RSCP computational process schematic diagram under the GSM/GPRS connected state, after the acquisition TD timing;
Fig. 4 measures the TD time based on the Idle frame under the GSM/GPRS connected state to distribute schematic diagram.
Embodiment
Describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
Based on the requirement of the system's measurements under the connection status of agreement regulation, promptly (1) utilizes and does not do frame (Search Frame) that BSIC confirms and carry out the TD measurement GSM/GPRS connection mode under.That is, if network issues parameter ' 3G_SEARCH_PRIO ', then require to carry out 3G and measure, the TD that UE can utilize 25 idle frames among the 13s to carry out under the GSM/GPRS connection mode measures; (2) measurement of 64 inter-RAT sub-districts of support, maximum 3 TDD (time division duplex) frequency, maximum 32 sub-districts on the TDD frequency." idle frame " under the GSM/GPRS connection mode and " idle time slot " are according to analyzing as can be known: per 26 frames have 1 idle frame to occur; Idle window around idle frame is 10 time slots.
The flow process that the present invention realizes under the GSM/GPRS connected state measuring TD as shown in Figure 1,
A, utilize idle frame (Idie frame) to seek the TD system regularly;
B, according to the TD system regularly measures the relative TD in all sub-districts system observed time difference (CBCH (P-CCPCH/Dw-PTS) arrives the time difference of UE for OTD, Observed Time Difference) regularly under the TDD frequency to be measured;
C, utilize idle frame to receive the data of this TDD frequency, calculate the received signal code power (RSCP) of all sub-districts under this frequency.
Relate to following two kinds of situations in the said process:
(1) no TD system regularly, then successively through thick synchronously, smart synchronously, calculate these three subprocess of RSCP, carry out TD system determining and the calculating of RSCP regularly;
When (2) having the TD system regularly, then pass through DST (Data SynchronizationTechnology, data synchronization technology) successively, calculate these two subprocess of RSCP, calculate the RSCP of frequency to be measured.
Describe the implementation process that the present invention realizes that TD measures in detail below in conjunction with Fig. 2 to Fig. 4.Need search corresponding TD during at first TDD frequency regularly, carry out the calculating of RSCP after the realization data sync again.
As shown in Figure 2, search the TD system regularly and the RSCP computational process of first frequency as follows:
Attempt slightly synchronously at first frequency, it is first threshold that the AGC coefficient is set, and receives data and storage from TDD frequency to be measured, judge whether to search successfully according to the data of storing, if TD system position is regularly then determined in success, and execution in step 250; If execution in step 240 then.Whether whether this step can adopt repetition strategies, promptly repeats the reception of at least two secondary data, carries out correlation ratio according to the data of twice reception then, regularly search successfully in order to judge the TD system, promptly judge slightly successful synchronously.
280, change TD flow process regularly over to, calculate the RSCP of other two frequencies of residue.
290, reporting the RSCP of high-rise all sub-districts is minimum value.
300, prepare to attempt next frequency, and return step 210.
As shown in Figure 3, if there is TD regularly, then directly obtain to calculate the OTD of RSCP sub-district with following the tracks of DST (DataSynchronization Technology, data synchronization technology) module synchronously, RSCP calculates as RSCP input carrying out, and its process is as follows:
Step 400, first will calculate the frequency of RSCP.
Step 410, radio frequency switch to this frequency, and utilize an idle frame that AGC is adjusted, and start the AGC module.
Step 420 is with following the tracks of the timing information that the DST module generates 4 sub-districts synchronously.Then, DST and RSCP computing module can walk abreast and carry out, and promptly the RSCP computing module calculates last one group of RSCP that has obtained 4 sub-districts of OTD, and DST calculates the OTD of new one group of 4 sub-district simultaneously.
Step 430, the OTD that judges whether all sub-districts under this frequency has calculated and has finished; If then execution in step 440, then return step 420 if not.
Step 440 is calculated the RSCP of 4 sub-districts.
Step 450, the RSCP that judges whether all sub-districts under this frequency has calculated and has finished, if execution in step 460 is then then returned step 440 if not.
Step 460 judges whether enough 3 times, if execution in step 470 is then then returned step 440 if not.
Step 470 judges whether that the RSCP of other frequencies does not do in addition.If then execution in step 480, execution in step 490 then if not.
Step 480 is prepared to attempt next frequency, returns step 410.
Step 490 reports high level with the result.
As shown in Figure 4, thick synchro measure strategy can be slightly synchronous at each frequency trial carrying out TD successively, and the configuration order of measuring each time is f1 f1 f1 f1 f2 f2 f2 f2 f3 f3 f3 f3, and wherein 1,2,3 at three frequencies, repeats the number statement receives data from frequency number of repetition.Thick synchronizing process shown in Figure 2 needs 12 idle frames at most.Wherein, attempt search on 1 frequency, 2 grades of AGC duplicate measurementss are 2, need 4 idle frames to receive data at most, and maximum 3 frequencies in TD adjacent area under the GSM pattern need 12 Idle frames at most, i.e. 12 * 26GSM frame.Time, reception 1 frame+128chipTD data that stabilization time, the AGC radio frequency that each idle window length that receives will be considered radio frequency is stable.In the smart synchronizing process shown in Figure 2, need 2 idle frames, receiving data length is the relevant 128chip of sync_dl; The calculating of finishing RSCP under this frequency needs 3 times, and receiving data length is TS0midamble sign indicating number and sync_dl related data.Method of the present invention can receive buffer memory earlier with data, and then carries out modularization and handle, in view of current disposal ability, and the processing time of each module, all be far smaller than 26 frames, can satisfy the demand.
As shown in Figure 4, following labor is when having TD regularly, the time of process shown in Figure 3 distributes: when having TD regularly, the repetition strategies that adopts is f1 f1 f1 f1 f2 f2 f2 f2 f3 f3 f3 f3, the data that certain frequency first frame repeats are in order to adjust the AGC factor, be not DST and RSCP and measure, repeat for 3 times the back is for the RSCP value of certain frequency being measured 3 times, being needed 12 subframes altogether.Finishing TD adjacent area RSCP and calculate, is at most 12 idle frames, i.e. 12 * 26GSM frame; Finish all adjacent area RSCP calculating on 1 frequency, idle window size needs to consider stable time, TDmidamble and the sync_dl related data of stabilization time, AGC radio frequency of radio frequency.On 1 Idle frame, receive 1 secondary data buffer memory, carry out DST, RSCP computing afterwards, in view of current disposal ability, above-mentioned 1 reception, the processing time of each module, all be far smaller than 26 frames, can satisfy the demand.
In sum, the thought of on the Idle frame that can utilize Bsic not take under the GSM/GPRS connected state, carrying out the TD measurement that the present invention points out according to gsm protocol, the present invention has provided based on the Idle frame and has carried out the specific implementation method that TD measures.As shown in Figure 4, require to finish in the 3s measurement under the GSM/GPRS connected state between system, no TD system regularly the time spended time the longest, each subprocess holding time is as shown in the figure.If no TD system timing, can on the Idle frame, receive data and carry out thick synchronous, smart synchronous, these three subprocess of RSCP successively, need 25 idle frames to receive data altogether, and and then buffer memory handle by each algoritic module, can finish measurement at 3s fully to the TD adjacent area.Wherein, utilize idle frame in the thick synchronizing process, carry out search procedure that AGC is set to second threshold value once, the search procedure that AGC is set to first threshold repeats 2 times, needs 12 26 multi-frames to finish at most.Utilize idle frame in the smart synchronizing process, the search procedure that AGC resets repeats 2 times, needs 2 26 multi-frames to finish at most.If there is the TD system regularly, can on the Idle frame, receive data and carry out these 2 subprocess of DST, RSCP successively, need 12 idle frames reception data altogether, and and then buffer memory handle by each algoritic module, can in 3s, finish measurement to the TD adjacent area.Wherein, the computational process of RSCP utilizes idle frame can receive 1 frequency TS0midamble+SYNC_DL related data for 1 time, all co-frequency cell RSCP of this frequency can be calculated 1 time.Protocol requirement RSCP calculates 3 times at least, and maximum 3 frequencies need 9 26 reframing times, considers frequency change-over time simultaneously, and 11 GSM 26 multi-frames can be finished.
Carry out the method that TD measures based on the Idle frame under the given GSM/GPRS connected state of the present invention, can utilize existing algorithm module under the TD pattern first, second can satisfy the requirement of agreement real-time fully, realize under the GSM pattern measurement to the TD adjacent area, can realize the switching of GSM/GPRS on this basis, have very high practical value to the TD adjacent area.Illustrating of above-mentioned each concrete steps is comparatively concrete, can not therefore think the restriction to scope of patent protection of the present invention, and scope of patent protection of the present invention should be as the criterion with claims.
Claims (8)
1, a kind ofly finish the method for time division neighbor measurement, it is characterized in that, said method comprising the steps of based on idle frame:
A, utilize idle frame to seek the TD system regularly;
B, according to the TD system regularly measures the relative TD in all sub-districts system observed time difference regularly under the frequency to be measured;
C, utilize idle frame to receive the data of this frequency, calculate the received signal code power of all sub-districts under this frequency.
2, method according to claim 1 is characterized in that, comprises a thick synchronizing process in the described steps A, and this thick synchronizing process may further comprise the steps:
A1, the automatic gain control coefrficient is set is first threshold, receives data and storage from described frequency to be measured, judges according to the data of storage whether the TD system regularly searches successfully, if the position of TD system timing is then determined in success.
3, method according to claim 2 is characterized in that, described thick synchronizing process is further comprising the steps of:
A2, when the judged result of described steps A 1 for not the time, adjusting the automatic gain control coefrficient is second threshold value, reception judges according to the data of storage whether the TD system regularly searches successfully from the data and the storage of described frequency to be measured, if TD system position is regularly then determined in success; If unsuccessful, then switch to next frequency to be measured, and be back to steps A.
4, according to claim 2 or 3 described methods, it is characterized in that, also comprise a smart synchronizing process in the described steps A, after thick synchronizing process judges to search successfully, change this essence synchronizing process over to, this essence synchronizing process may further comprise the steps:
The data computation that receives according to thick synchronizing process obtains revised automatic gain control coefrficient, and reset the automatic gain control coefrficient according to result of calculation, reception is determined TD system position regularly from the down-going synchronous code data and the storage of described frequency to be measured according to these data.
5, method according to claim 4 is characterized in that, in the described smart synchronizing process, the position of correlation peak maximum of getting the down-going synchronous code data of frequency to be measured and local down-going synchronous code data is as TD system position regularly.
6, method according to claim 2 is characterized in that, in the described steps A 1, repeats the process of at least twice reception data.
7, method according to claim 1 is characterized in that, the data that described step C receives are the sub-district basic training sequences under the frequency to be measured.
8, method according to claim 4, it is characterized in that, after described steps A obtains the timing of TD system, described step B generates the relative TD in all sub-districts system observed time difference regularly in other frequencies to be measured with described step C by synchronous tracking technology, and calculates the received signal code power of all sub-districts.
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| CN101964989A (en) * | 2010-04-20 | 2011-02-02 | 展讯通信（上海）有限公司 | Cell measurement method and system thereof |
| CN102137426A (en) * | 2011-04-28 | 2011-07-27 | 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 |
| CN102892139A (en) * | 2011-07-21 | 2013-01-23 | 普天信息技术研究院有限公司 | Method for measuring neighbourhood of multi-channel wireless communication system |
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| CN103686829A (en) * | 2012-09-25 | 2014-03-26 | 中兴通讯股份有限公司 | A method and an apparatus for measuring a multi-mode terminal in an auxiliary mode |
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| CN101964989A (en) * | 2010-04-20 | 2011-02-02 | 展讯通信（上海）有限公司 | Cell measurement method and system thereof |
| 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 |
| CN102137426A (en) * | 2011-04-28 | 2011-07-27 | 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 |
| CN102892139B (en) * | 2011-07-21 | 2015-05-27 | 中国普天信息产业股份有限公司 | Method for measuring neighbourhood of multi-channel wireless communication system |
| CN102892139A (en) * | 2011-07-21 | 2013-01-23 | 普天信息技术研究院有限公司 | Method for measuring neighbourhood of multi-channel wireless communication system |
| CN103582180A (en) * | 2012-07-23 | 2014-02-12 | 联发科技股份有限公司 | Communication equipment and scheduling method for radio activities |
| CN103582180B (en) * | 2012-07-23 | 2018-05-01 | 联发科技股份有限公司 | The scheduling method of communication apparatus and radio activity |
| CN103686829A (en) * | 2012-09-25 | 2014-03-26 | 中兴通讯股份有限公司 | A method and an apparatus for measuring a multi-mode terminal in an auxiliary mode |
| CN103686829B (en) * | 2012-09-25 | 2017-06-30 | 深圳市中兴微电子技术有限公司 | Measuring method and device of a kind of multimode terminal under auxiliary mode |
| WO2019184761A1 (en) * | 2018-03-28 | 2019-10-03 | 维沃移动通信有限公司 | Indication method for measurement result, terminal, and base station |
| CN110324834A (en) * | 2018-03-28 | 2019-10-11 | 维沃移动通信有限公司 | Indicating means, terminal and the base station of measurement result |
| CN110324834B (en) * | 2018-03-28 | 2021-06-04 | 维沃移动通信有限公司 | Indication method of measurement result, terminal and base station |
| US11445399B2 (en) | 2018-03-28 | 2022-09-13 | Vivo Mobile Communication Co., Ltd. | Indication method for measurement result, terminal, and base station |
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Effective date of registration: 20160304 Address after: Dameisha Yantian District of Shenzhen City, Guangdong province 518085 Building No. 1 Patentee after: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Corporation |
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Application publication date: 20100127 Assignee: Xi'an Chris Semiconductor Technology Co. Ltd. Assignor: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Contract record no.: 2019440020036 Denomination of invention: Method for completing time division neighbor measurement based on idle frame Granted publication date: 20120704 License type: Common License Record date: 20190619 |