CN101420723A - System measurement method and apparatus - Google Patents
System measurement method and apparatus Download PDFInfo
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- CN101420723A CN101420723A CNA2008101812203A CN200810181220A CN101420723A CN 101420723 A CN101420723 A CN 101420723A CN A2008101812203 A CNA2008101812203 A CN A2008101812203A CN 200810181220 A CN200810181220 A CN 200810181220A CN 101420723 A CN101420723 A CN 101420723A
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Abstract
The invention provides a system measurement method and a device thereof. The method comprises the following steps: in a measurement period, successively scheduling the following processes in various idle time periods according to one or a plurality of idle time periods reported by a physical layer: a BSIC re-verification process for re-verifying cells in need of BSIC re-verification; a measurement process of a carrier RSSI for measuring the carrier RSSI of the cells; a BSIC demodulation process for initially synchronizing the cells. The measurement method and the measurement device shorten the system measurement time, and further shorten the reselection time among systems so as to improve the performance of the systems.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of system measurement method and device.
Background technology
Than second generation mobile communication system, 3-G (Generation Three mobile communication system), for example, TD SDMA inserts (Time Division-Synchronous Code DivisionMultiple Access, abbreviate TD-SCDMA as) system, owing to adopted smart antenna and multi-user association detection technique, the higher availability of frequency spectrum can be provided.But, because global mobile communication (Global system forMobile Communication as the representative of second generation mobile communication technology, abbreviating GSM as) network has been quite ripe, for the needs of network evolution and business development, GSM network and 3G network are in the quite a long time existence that can walk abreast.
The dual-mode terminal of TD-SCDMA system need be measured the target side gsm system, so that understand signal level, signal quality and the synchronizing information of target side gsm system, and then judges whether to carry out gravity treatment between system.Measurement to the target side gsm system can independently be initiated by dual-mode terminal, also can be initiated by TD-SCDMA system sending measuring order notice dual-mode terminal.
Reuse adoption process can occur in the Idle state of physical layer between system, the complexity when judgment rule of this moment is attached to the GSM sub-district than terminal.Terminal, is determined by discontinuous reception (Discontinuous Reception the abbreviates DRX as) cycle according to the measuring process of different thresholding triggerings to the GSM adjacent area whether to use layered cell structure this measuring period.Terminal is supported 32 sub-districts on 32 GSM frequencies at most, requirement in 30 seconds to Broadcast Control Channel (the Broadcast Control Channel of 4 GSM the strongest, abbreviate BCCH as) obtain its base station district identification code (Base transceiver Station Indentity Code abbreviates BSIC as).If measured sub-district is better than current area in the sub-district gravity treatment cycle always, then dual-mode terminal is initiated reuse adoption process.
Measure for the cross-mode of 2G system and mainly to be divided into three processes: one, to the measurement of GSM carrier wave received signal code power (Received Signal Strength Indicator abbreviates RSSI as); Two, demodulation BSIC; Three, the re-examination of BSIC card.Above-mentioned three processes are interspersed carries out, the priority on having no time.Below these three processes are described in detail:
One, to the measurement of GSM carrier wave RSSI.Level value measurement requirement to carrier wave RSSI is carried out sample mean 4 times in each measuring period, and sampling need be evenly distributed in the cycle.Determine that according to the number of DRX the value in general measure cycle is as shown in table 1 the measuring period here.
Table 1
| The DRX number | 32 | 16 | 16 | 8 | 5 | 3 | 2 |
| DRX cycle length (second) | 0.08 | 0.16 | 0.32 | 0.64 | 1.28 | 2.56 | 5.14 |
Two, demodulation BSIC.When the BSIC of demodulation sub-district, size according to the carrier wave RSSI of up-to-date measurement, to 4 the strongest sub-district decoding BSIC, the BSIC if the bcch carrier of certain GSM was not successfully decoded in 5 seconds, then dual-mode terminal is abandoned it is continued decoding, and continue to attempt the BSIC of strong sub-district of other 4 of decodings by the size of the carrier wave RSSI that measures, after these sub-districts decodings were finished, attempted again the sub-district that dual-mode terminal just can be selected to continue the decoding failure.
Three, BSIC re-examination card.The sub-district of success decoding BSIC will enter BSIC re-examination card process, and this re-examination card process is initiated instruction by protocol stack, and physical layer is finished after receiving instruction, and the re-examination card cycle is 30 seconds.If in 30 seconds, the re-examination card is not carried out in a sub-district, think that then this sub-district do not carry out the BSIC demodulation, change this sub-district over to demodulation BSIC process; If the re-examination card number of times to this sub-district surpasses twice, then this sub-district changes the measuring process of carrier wave RSSI over to.
For the TD-SCDMA system, the free time of physical layer, (GAP) was longer, but protocol stack is not reasonably dispatched above-mentioned three processes according to Idle state, has caused the systematic survey overlong time, and then has caused the gravity treatment overlong time between system and make the decreased performance of system.
Summary of the invention
Above-mentioned three processes are not reasonably dispatched the systematic survey excessive cycle that causes at above-mentioned because protocol stack according to free time, and then between the system that causes the gravity treatment excessive cycle and make system decreased performance problem and the present invention is proposed, the present invention aims to provide a kind of system measurement method and device, to address the above problem.
According to an aspect of the present invention, a kind of system measurement method is provided, comprise: in measuring period, the one or more free times that report according to physical layer, in each free time, successively dispatch following process: BSIC re-examination card process, the re-examination card is carried out in the sub-district that is used for needs are carried out BSIC re-examination card; The measuring process of carrier wave RSSI is used for the carrier wave RSSI of sub-district is measured; Demodulation BSIC process is used for initial synchronisation is carried out in the sub-district.
According to another aspect of the invention, provide a kind of imitation-system measuring apparatus, having comprised: receiver module is used to receive the free time that physical layer reports; Re-examination card module is used to carry out BSIC re-examination card process; Measurement module is used for the carrier wave RSSI of sub-district is measured; Demodulation module, the BSIC that is used for the demodulation sub-district is to realize the initial synchronisation of sub-district; Scheduler module is used for dispatching successively according to free time counterweight authentication module, measurement module, demodulation module that receiver module receives.
By means of technique scheme one of at least, the present invention reports free time by physical layer, make protocol stack reasonably to dispatch above-mentioned three processes according to free time, compared with prior art, shortened the systematic survey time, and then shortened the gravity treatment time between system and improved the performance of system.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the system measurement method of the inventive method embodiment;
Fig. 2 is the block diagram according to the imitation-system measuring apparatus of apparatus of the present invention embodiment;
Fig. 3 is the detailed diagram according to the imitation-system measuring apparatus of apparatus of the present invention embodiment.
Embodiment
Functional overview
As mentioned above, at present, the free time of physical layer is longer, and protocol stack is not reasonably dispatched three processes of measuring system according to free time, caused the systematic survey overlong time, in the technical scheme that the embodiment of the invention provides, report free time by physical layer, make protocol stack in the measuring period of system, reasonably to dispatch three processes measuring according to free time, compared with prior art, shortened the systematic survey time, and then shortened the gravity treatment time between system and improved the performance of system.
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.Need to prove that if do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
Method embodiment
In an embodiment of the present invention, provide a kind of system measurement method.Fig. 1 is the flow chart according to the system measurement method of the embodiment of the invention.
The length of a tdma frame of 3GPP definition is 10 milliseconds, and 10 milliseconds of frames can be divided into two identical in structure subframes, and each subframe is made up of 3 special time slots and 7 conventional time slots.When Idle state, the free time that is used for the GSM measurement that physical layer reports can be greater than a frame, physical layer reports protocol stack with this free time, begin measuring period in the free time that protocol stack reports according to physical layer, in one or more free times, dispatch measuring process and the demodulation BSIC process of BSIC re-examination card process, carrier wave RSSI successively.Preferably, can be the integral multiple of DRX measuring period.Need to prove, in a free time, preferably carry out the scheduling of a process in measuring period,, then stop scheduling, proceed next process this process if in a free time, do not finish scheduling to certain process.
Particularly, as shown in Figure 1, comprise step S102-step S108, below each step is described in detail.
Step S102, according to one or more free times that physical layer reports, in each free time successively three processes of scheduling measurement, that is, successively execution in step S104 is to step S108 in measuring period.
Step S104, BSIC re-examination card process.
This process is used for the re-examination card is carried out in the sub-district.Particularly, protocol stack is dispatched after this process in a free time, at first judge whether to exist the sub-district that to carry out BSIC re-examination card, if the sub-district that need carry out BSIC re-examination card is arranged, then protocol stack sends the instruction of re-examination card to physical layer, and physical layer is carried out re-examination to the BSIC of sub-district and demonstrate,proved receiving re-examination card instruction back in first scheduled time (can be understood as the maximum time that can carry out the operation of re-examination card).The scheduled time here preferably needs to carry out the product of the length (length of a GSM frame is 4.61ms) of the number of sub-district of BSIC re-examination card and 12 GSM frames.If protocol stack is judged the sub-district that does not have to carry out BSIC re-examination card, then protocol stack directly carries out step to S106, the measuring process of scheduling carrier wave RSSI.
In specific implementation process, preferably, in measuring period, need the QED one-tenth of sub-district re-examination of BSIC re-examination card, or reach re-examination card maximum time up to all, just proceed to step S106, this re-examination is demonstrate,proved maximum time and is less than or equal to free time.If will need the number of cells of re-detection to be converted into the length of GSM frame, then average each sub-district approximately needs the verifying of time of 12 GSM frames.
Need to prove, characteristics according to the GSM network, if re-examination card process is not finished in the time of 12 GSM frames in a sub-district, the re-examination of this sub-district card probability of successful can be very little so, and continue in measuring period its re-examination to be demonstrate,proved is nonsensical, in this case, preferably selection is abandoned the re-examination of this sub-district is demonstrate,proved.
In addition, in specific implementation process, after protocol stack receives the free time that physical layer reports, can judge at first whether physical layer is to report free time for the first time.If report free time for the first time, then when scheduling BSIC re-examination card process, can there be the sub-district that needs the re-examination card, then directly carry out the measuring process of scheduling carrier wave RSSI.That is to say, be to report free time for the first time if judge physical layer, then the direct measuring process of scheduling carrier wave RSSI.
Step S106, the measuring process of carrier wave RSSI.
This process is used for the carrier wave RSSI of sub-district is measured.Particularly, after having finished above-mentioned steps S104, the measuring process of protocol stack scheduling carrier wave RSSI in a free time, physical layer is finished the measurement to the carrier wave RSSI of all sub-districts in second scheduled time, and according to the size of measured value is sorted in the sub-district.Second scheduled time here is the maximum time of the measurement of carrying out carrier wave RSSI, can be called the maximum measuring time window, can be the product of the quantity of 1 GSM time slot (length of 1 GSM time slot is about 0.58ms) and the sub-district that need measure carrier wave RSSI, preferably be less than or equal to free time.
In specific implementation process, the carrier wave RSSI of each sub-district is measured, after the carrier wave rssi measurement of all sub-districts is finished or reached the maximum measuring time window, sorted in the sub-district by the size of carrier wave rssi measurement value.
Step S108, demodulation BSIC process.
This process is used for initial synchronisation is carried out in the sub-district.Particularly, after having finished above-mentioned steps S106, protocol stack is dispatched demodulation BSIC process in a free time, in the 3rd scheduled time predetermined cell of arranging among the step S106 is carried out demodulation, wherein, the predetermined cell of mentioning here is preceding 4 sub-districts of measured value maximum.The 3rd scheduled time here, that is, carry out the maximum time of demodulation BSIC process, can be called initial synchronisation maximum time window, it preferably equals first scheduled time among the above-mentioned steps S104, carries out the product of the length of the number of sub-district of BSIC re-examination card and 12 GSM frames for needs.
In specific implementation process, after descending or ascending ordering is carried out in the sub-district of measuring carrier wave RSSI, initial synchronisation (promptly carrying out demodulation) is carried out in preceding 4 sub-districts to the carrier wave rssi measurement value maximum of sub-district, in initial synchronisation maximum time window, if the initial synchronisation of these preceding 4 sub-districts is finished or reached initial synchronisation maximum time window, then this time measure and finish.Similar with demodulation RSSI of the prior art, if above-mentioned preceding 4 sub-districts are carried out whether have in the process of initial synchronisation the sub-district of initial synchronisation success, then according to the result of ordering, the sub-district of the corresponding strong carrier wave RSSI of other times of replenishing (after replenishing or 4 sub-districts) carry out initial synchronisation.
In addition, should also there be remaining free time in measuring period, then can cancels these free times if in a measuring period, finished above-mentioned three processes (step S104 is to step S108); For the said process of in a measuring period, not finishing, can dispatch once more and carry out in next measuring period, after all processes of finishing this measurement, begin the measurement arrangement of a new round again.
For example, physical layer reports 5 free times of protocol stack, then preferably when the 1st free time arrives, perhaps in the 1st free time, begin measuring period, and scheduling BSIC re-examination is demonstrate,proved process in the 1st free time, the measuring process of scheduling carrier wave RSSI in the 2nd free time, scheduling demodulation BSIC process in the 3rd free time.
If the termination that is carved into the 5th free time during from the 1st free time initial constantly institute's elapsed time less than measuring period, then finish after these three processes, the measuring system process just is through with, and can cancel remaining 2 free times, in order to avoid cause the waste of resource; If the termination that is carved into the 5th free time during from the 1st free time initial constantly institute's elapsed time greater than measuring period, suppose that the 1st and the 2nd free time are in measuring period, then begin second measuring period the 3rd free time, and scheduling demodulation BSIC process.
As seen from the above description, the free time rational management that protocol stack reports according to physical layer is measured three processes of sub-district, compared with prior art, has shortened the systematic survey time, and then has shortened the gravity treatment time between system and improved the performance of system.
Device embodiment
In an embodiment of the present invention, provide a kind of imitation-system measuring apparatus, be preferably used for realizing the method among the said method embodiment.Fig. 2 is the block diagram according to the imitation-system measuring apparatus of apparatus of the present invention embodiment, as shown in Figure 2, comprising: receiver module 20, re-examination card module 22, measurement module 24, demodulation module 26 and scheduler module 28 below are described in detail each module.
Particularly, Fig. 3 is the detailed diagram according to the imitation-system measuring apparatus of apparatus of the present invention embodiment, and as shown in Figure 3, this re-examination card module 22 comprises: judge submodule 220, re-examination card submodule 222, first timer 224, below each module is elaborated.
Judge submodule 220, be used to judge whether to exist the sub-district that to carry out BSIC re-examination card.
Re-examination card submodule 222 is connected to and judges submodule 220, and being used in the judged result of judging submodule 220 is under the situation that is, needs is carried out the sub-district of BSIC re-examination card and carries out the re-examination card.
First timer 224 is connected to and judges submodule 220 and re-examination card submodule 222, and the implementation that is used for counterweight authentication module 22 is carried out timing.The threshold value of first timer 224 can be the scheduled time among the above-mentioned steps S104, carries out the product of the length of the number of sub-district of BSIC re-examination card and 12 GSM frames for needs.
Re-examination card module 22 realizes that the process of BSIC re-examination card has had detailed description at above-mentioned steps S104, repeats no more here particularly.
Particularly, as shown in Figure 3, measurement module 24 comprises: measure submodule 240, ordering submodule 242, second timer 244, below each module is described in detail.
Measure submodule 240, be used for the carrier wave RSSI of sub-district is measured; Ordering submodule 242 is connected to and measures submodule 240, is used for according to the measured value of the carrier wave RSSI that measures submodule 240 measurement sub-districts being sorted in the sub-district.
Second timer 244 is connected to and measures submodule 240 and ordering submodule 242, and the implementation that is used for measurement module 24 is carried out timing.The threshold value of second timer 244 can be the scheduled time among the above-mentioned steps S106, is the product of the quantity of 1 GSM time slot and the sub-district that need measure carrier wave RSSI.
Particularly, as shown in Figure 3, demodulation module 26 comprises:
Demodulation submodule 260 is used for the BSIC of preceding 4 sub-districts of the measured value maximum after the ordering of ordering submodule 242 is carried out demodulation, realizes the initial synchronisation of these 4 sub-districts.
The 3rd timer 2 62 is connected to demodulation submodule 260, carries out timing when being used for 260 execution of demodulation submodule.The threshold value of the 3rd timer 2 62 can be the scheduled time among the above-mentioned steps S108, carries out the product of the length of the number of sub-district of BSIC re-examination card and 12 GSM frames for needs.
In specific implementation process, above-mentioned first timer 224, second timer 244, the 3rd timer 2 62 can be unified and be set to a timer with three threshold values, and these three threshold values are the threshold value of corresponding first timers 224, second timer 244, the 3rd timer 2 62 respectively.
In sum, the free time rational management that reports according to physical layer by protocol stack is measured three processes of sub-district, compared with prior art, has shortened the systematic survey time, and then has shortened the gravity treatment time between system and improved the performance of system.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a system measurement method is characterized in that, comprising: in measuring period, according to one or more free times that physical layer reports, successively dispatch following process in each free time:
BSIC re-examination card process, the re-examination card is carried out in the sub-district that is used for needs are carried out BSIC re-examination card;
The measuring process of carrier wave RSSI is used for the carrier wave RSSI of sub-district is measured;
Demodulation BSIC process is used for initial synchronisation is carried out in the sub-district.
2. method according to claim 1 is characterized in that, described BSIC re-examination card process comprises:
Judge whether to exist the sub-district that to carry out BSIC re-examination card;
If there is the sub-district that to carry out BSIC re-examination card, then described physical layer receives the instruction of re-examination card, and the sub-district of in the given time needs being carried out BSIC re-examination card carries out BSIC re-examination card, if there is no needs to carry out the sub-district of BSIC re-examination card, then withdraws from described BSIC re-examination card process.
3. method according to claim 2 is characterized in that, the described scheduled time is the number of the described needs sub-district of carrying out BSIC re-examination card and the product of 12 GSM frames.
4. method according to claim 1 is characterized in that, the measuring process of described carrier wave RSSI comprises:
Finish measurement in the given time, and the sub-district is arranged according to the size of measured value to the carrier wave RSSI of sub-district.
5. method according to claim 4 is characterized in that, the described scheduled time is the product of the quantity of 1 GSM time slot and the sub-district that need measure carrier wave RSSI.
6. method according to claim 4 is characterized in that, described demodulation BSIC process comprises:
BSIC to the predetermined cell in the described arrangement carries out demodulation in the given time, wherein, described predetermined cell is preceding 4 sub-districts of measured value maximum, and the described scheduled time is the product of the length of the number of the described needs sub-district of carrying out BSIC re-examination card and 12 GSM frames.
7. an imitation-system measuring apparatus is characterized in that, comprising:
Receiver module is used to receive the free time that physical layer reports;
Re-examination card module is used to carry out BSIC re-examination card process;
Measurement module is used for the carrier wave RSSI of sub-district is measured;
Demodulation module, the BSIC that is used for the described sub-district of demodulation is to realize the initial synchronisation of described sub-district;
Scheduler module, the described free time that is used for receiving according to described receiver module dispatches successively to described re-examination card module, described measurement module, described demodulation module.
8. device according to claim 7 is characterized in that, described re-examination card module comprises:
Judge submodule, be used to judge whether to exist the sub-district that to carry out BSIC re-examination card;
First timer is used to carry out timing;
Re-examination card submodule, the judged result that is used at described judgement submodule is under the situation that is, the re-examination card is carried out in the sub-district of in the timing cycle of described first timer described needs being carried out BSIC re-examination card.
9. device according to claim 7 is characterized in that, described measurement module comprises:
Second timer is used to carry out timing;
Measure submodule, be used for that the carrier wave RSSI to the sub-district measures in the timing cycle of described second timer;
The ordering submodule, the value that is used for the carrier wave RSSI that measures according to described measurement submodule sorts to described sub-district.
10. device according to claim 9 is characterized in that, described demodulation module comprises:
The 3rd timer is used to carry out timing;
The demodulation submodule is used in the timing cycle of described the 3rd timer the BSIC of the sub-district of preceding 4 carrier wave RSSI of the measured value maximum after the described ordering submodule ordering is carried out demodulation.
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| CN103024792A (en) * | 2011-09-23 | 2013-04-03 | 南京熊猫汉达科技有限公司 | Online-statistics and optimal-selection communication method for 3G (the 3rd generation telecommunication) network broadband |
| CN103686802A (en) * | 2012-09-19 | 2014-03-26 | 联芯科技有限公司 | GSM adjacent region measurement method and device in LTE/TD-SCDMA business state |
| US8774792B2 (en) | 2010-02-03 | 2014-07-08 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for measuring aggregated carrier cell |
| 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 |
| CN105075332A (en) * | 2013-02-26 | 2015-11-18 | 高通股份有限公司 | Early termination of a base station identity code procedure in td-sdcma |
| WO2019047542A1 (en) * | 2017-09-08 | 2019-03-14 | 华为技术有限公司 | Method for rssi measurement, network device, and terminal device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8774792B2 (en) | 2010-02-03 | 2014-07-08 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for measuring aggregated carrier cell |
| US9020494B2 (en) | 2010-02-03 | 2015-04-28 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for measuring aggregated carrier cell |
| US9301190B2 (en) | 2010-02-03 | 2016-03-29 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for measuring aggregated carrier cell |
| CN103024792A (en) * | 2011-09-23 | 2013-04-03 | 南京熊猫汉达科技有限公司 | Online-statistics and optimal-selection communication method for 3G (the 3rd generation telecommunication) network broadband |
| CN103024792B (en) * | 2011-09-23 | 2017-05-17 | 南京熊猫汉达科技有限公司 | Online-statistics and optimal-selection communication method for 3G (the 3rd generation telecommunication) network broadband |
| CN103686802A (en) * | 2012-09-19 | 2014-03-26 | 联芯科技有限公司 | GSM adjacent region measurement method and device in LTE/TD-SCDMA business state |
| CN105075332A (en) * | 2013-02-26 | 2015-11-18 | 高通股份有限公司 | Early termination of a base station identity code procedure in td-sdcma |
| 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 |
| WO2019047542A1 (en) * | 2017-09-08 | 2019-03-14 | 华为技术有限公司 | Method for rssi measurement, network device, and terminal device |
| US10972199B2 (en) | 2017-09-08 | 2021-04-06 | Huawei Technologies Co., Ltd. | RSSI measurement method, network device, and terminal device |
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Application publication date: 20090429 |