CN102137426B - Method and device for measuring power of time division-synchronous code division multiple access (TD-SCDMA) system in heterogeneous system - Google Patents

Method and device for measuring power of time division-synchronous code division multiple access (TD-SCDMA) system in heterogeneous system Download PDF

Info

Publication number
CN102137426B
CN102137426B CN2011101095132A CN201110109513A CN102137426B CN 102137426 B CN102137426 B CN 102137426B CN 2011101095132 A CN2011101095132 A CN 2011101095132A CN 201110109513 A CN201110109513 A CN 201110109513A CN 102137426 B CN102137426 B CN 102137426B
Authority
CN
China
Prior art keywords
power measurement
data
terminal
synchronizing information
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011101095132A
Other languages
Chinese (zh)
Other versions
CN102137426A (en
Inventor
刘俊英
黄珍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ST Ericsson Semiconductor Beijing Co Ltd
Original Assignee
ST Ericsson Semiconductor Beijing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ST Ericsson Semiconductor Beijing Co Ltd filed Critical ST Ericsson Semiconductor Beijing Co Ltd
Priority to CN2011101095132A priority Critical patent/CN102137426B/en
Publication of CN102137426A publication Critical patent/CN102137426A/en
Application granted granted Critical
Publication of CN102137426B publication Critical patent/CN102137426B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a method and a device for measuring a power of a time division-synchronous code division multiple access (TD-SCDMA) system in a heterogeneous system so as to solve the problem that in the prior art, power consumption is high when a terminal performs a TD-SCDMA measurement in the heterogeneous system. By taking synchronous information of a TD-SCDMA system subframe, which is measured and stored in advance, as coarse synchronous information and based on the coarse synchronous information, power measurement can be realized by receiving fewer wireless port data (less than a subframe), so power consumption is reduced.

Description

Measure method and the device of TD-SCDMA system power under the different system
Technical field
The present invention relates to communication technical field, relate to method and the device of measuring the TD-SCDMA system power under a kind of different system especially.
Background technology
From the TD-SCDMA networking begin to network quality relatively stablely, be a continuous perfecting process.This not only needs the regular hour, and at network not by before whole construction are finished in planning in advance, for guaranteeing stable operation and the client perception of network, must need to carry out interoperability between TD and different system such as GSM/GPRS network, utilize the integrity of GSM/GPRS network to remedy the covering cavity of TD-SCDMA network, network edge, weak overlay area, under automatic multimode, terminal need detect the performance number of multimode system constantly, for gravity treatment and switching in multimode system provide reliable performance number.Therefore work as terminal and reside under the different system, need to measure the TD-SCDMA system power.When terminal resides in when carrying out the TD-SCDMA systematic survey under the different system, need utilize idle time slot or the idle frame of current system to measure.Consider the movement of measuring period and terminal to the influence of TD-SCDMA system synchronous information, when terminal is measured under each different system of TD-SCDMA, need the synchronizing information of the accurate TD-SCDMA of detection system subframe to guarantee the precision of measuring.TD-SCDMA system subframe structure as shown in Figure 1; comprise that 3 special time slots (descending pilot frequency time slot DwPTS, up access slot UpPTS and protection time slot GP) and 7 conventional time slots are time slot 0~time slot 6(TS0~TS6); wherein DwPTS and UpPTS are used separately as uplink synchronous and down-going synchronous; carrying user data not; GP is used for the protection of downstream-to-upstream conversion, and TS0~TS6 is used for carrying user data or control information.The TS0 time slot has been divided into 4 territories, 2 data fields, 1 training sequence territory (Midamble) and 1 GP territory.The DwPTS structure of time slot comprises sending descending synchronous code (SYNC_DL) that its slot length is 96chip as shown in Figure 2, and wherein SYNC_DL is long is 64chips, and the front has 32chips to be used as the hangover protection of TS0 time slot.Base station node B must send descending synchronous code at the DwPTS of each residential quarter time slot.Different descending synchronous codes has identified different residential quarters, and its transmitted power must guarantee that omnirange covers whole residential quarter.The position of the SYNC_DL of TS0 time slot in each subframe determine, and every 5ms sends once in down link data, and UE will finish synchronous with Node B by correctly demodulating this SYNC_DL, detects the synchronizing information of TD-SCDMA system subframe.
When terminal is carried out the TD-SCDMA measurement in the prior art under different system, each wireless mouthful of data that all will collect a subframe 5ms of TD-SCDMA system, detect synchronously then, if synchronization failure, then receive wireless mouthful of data of 5ms again and carry out synchronously, if all fail, then jump to next frequency and carry out synchro measure, this implementation method all receives the wireless mouthful of data of 5ms at every turn as far as possible, and power consumption is bigger.
Summary of the invention
The objective of the invention is to carry out TD-SCDMA bigger problem of power consumption when measuring at terminal in the prior art under different system, the method for measuring the TD-SCDMA system power under a kind of different system is provided, this method comprises:
Terminal is at current measurement frequency, the synchronizing information of the TD-SCDMA system subframe of measuring before utilizing and preserving, receive wireless mouthful of required data of this power measurement, the number of chips of the wireless mouthful of data that this power measurement is required is less than the number of chips of a subframe, and wireless mouthful of required data of this power measurement comprise training sequence territory midamble data and the descending pilot frequency DwPTS time slot data of time slot 0;
The descending pilot frequency time slot data that the terminal utilization receives detect synchronously wireless mouthful of required data of this power measurement and to obtain this power measurement synchronizing information, and then obtain the required training sequence of this power measurement territory sign indicating number;
Terminal is according to this power measurement synchronizing information, extract the training sequence numeric field data of time slot 0 in the wireless mouthful of required data of this power measurement, adopt the training sequence numeric field data of the required training sequence of this power measurement territory sign indicating number and extraction to carry out correlation computations, obtain current measurement frequency Primary Common Control Physical Channel power.
Further, terminal obtains the required training sequence of this power measurement territory sign indicating number and is specially:
Terminal is utilized this power measurement synchronizing information, obtains the effective descending synchronous code in the wireless mouthful of required data of this measurement;
Terminal is if preserve the corresponding relation of this effective descending synchronous code that measures and training sequence territory sign indicating number, then directly obtain the required training sequence of this power measurement territory sign indicating number, detect otherwise carry out training sequence territory sign indicating number according to the effective descending synchronous code that obtains, obtain the required training sequence of this power measurement territory sign indicating number.
Further, also comprise: terminal is when measuring current measurement frequency first, received quantity is that wireless mouthful of data of N chip detect synchronously, if detect failure synchronously, then repeat the wireless mouthful of data that received quantity is N ' chip at this frequency, N and N ' are all less than the chip number of a subframe.
Further, terminal is determined the number of times that repeats to receive according to gain of received signal.
Further, when terminal is measured first at current measurement frequency, according to the size of gain of received signal and N, determine the number of times that repeats to receive.
Further, the synchronizing information of the TD-SCDMA system subframe of measuring before the terminal utilization and preserving receives wireless mouthful of required data of this power measurement and is specially:
The synchronizing information of the TD-SCDMA system subframe of measuring and preserving at current measurement frequency before the terminal utilization receives wireless mouthful of required data of this power measurement.
Further, terminal also comprises after detecting success synchronously:
Terminal is preserved the synchronizing information Pos that detection obtains under the current measurement frequency Current, and measure the strongest signal to noise ratio snr on the current measurement frequency Current(dB), if current measurement frequency is measured the frequency of measuring at first in the frequency for all, then set TDDtiming=Pos Current, SNR History(dB)=SNR Current(dB), wherein TDDtiming is the TD-SCDMA system synchronous information, SNR History(dB) be historical signal to noise ratio, otherwise utilize with the renewal TDDtiming that judges:
If SNR Current(dB)-SNR History(dB)>δ dB, wherein the adjusting parameter of δ for setting.
TDDtiming=Pos then CurrentAnd SNR History(dB)=SNR CurrentOtherwise TDDtiming and SNR (dB), History(dB) remain unchanged;
Also comprise:
If the synchronizing information of the TD-SCDMA system subframe of measuring and preserving at current measurement frequency before the terminal utilization, after receiving wireless mouthful of required data of this power measurement, detect failure synchronously, then terminal utilizes TD-SCDMA system synchronous information TDDtiming to receive wireless mouthful of required data of this power measurement again.
Further, regulate parameter δ and be set at 5.
Further, the synchronizing information of the TD-SCDMA system subframe of measuring and preserving at current measurement frequency before the terminal is, the synchronizing information that once measures at current measurement frequency before the terminal, or repeatedly measure at current measurement frequency before the terminal, and the synchronizing information that repeatedly measures carried out the synchronizing information that obtains after the smoothing processing.
The present invention also provides the device of measuring the TD-SCDMA system power under a kind of different system, comprising:
Receiver module, be used at current measurement frequency, the synchronizing information of the TD-SCDMA system subframe of measuring before utilizing and preserving, receive wireless mouthful of required data of this power measurement, the number of chips of the wireless mouthful of data that this power measurement is required is less than the number of chips of a subframe, and wireless mouthful of required data of this power measurement comprise training sequence territory midamble data and the descending pilot frequency DwPTS time slot data of time slot 0;
Synchronization module is used for utilizing the descending pilot frequency time slot data that receive, and wireless mouthful of required data of this power measurement is detected synchronously obtain this power measurement synchronizing information, and then obtain the required training sequence of this power measurement territory sign indicating number;
Computing module, be used for according to this power measurement synchronizing information, extract the training sequence numeric field data of time slot 0 in the wireless mouthful of required data of this power measurement, adopt the training sequence numeric field data of the required training sequence of this power measurement territory sign indicating number and extraction to carry out correlation computations, obtain current measurement frequency Primary Common Control Physical Channel power measurement.
Because the synchronizing information of the TD-SCDMA system subframe that terminal will be measured before and preserve as thick synchronizing information, can be finished power measurement by the less wireless mouthful of data (less than a subframe) of reception based on this thick synchronizing information, has reduced energy consumption.
Description of drawings
Fig. 1 represents TD-SCDMA system subframe structure schematic diagram in the prior art;
Fig. 2 represents TD-SCDMA system subframe descending pilot frequency time slot structural representation in the prior art;
Fig. 3 represents the first embodiment method flow diagram provided by the invention;
Fig. 4 represents the second embodiment device structure chart provided by the invention.
Embodiment
Below in conjunction with Figure of description the preferred embodiment of the present invention is described, first embodiment of the invention provides the method for measuring the TD-SCDMA system power under a kind of different system, safeguard thick synchronizing information by terminal, wireless mouthful of data that receive smaller length (less than a subframe) are measured, the bigger problem of power consumption when carrying out the TD-SCDMA measurement to solve terminal under different system.Particularly terminal is at current measurement frequency f1, the synchronizing information T0 of the TD-SCDMA system subframe of measuring before utilizing and preserving, receive wireless mouthful of required data D1 of this power measurement, the number of chips of D1 is less than the number of chips of a subframe, and D1 comprises training sequence territory midamble data and the descending pilot frequency DwPTS time slot data of time slot 0.The DwPTS data that the terminal utilization receives detect synchronously D1 and to obtain this power measurement synchronizing information T1, and then obtain the required midamble sign indicating number of this power measurement.Terminal is according to T1, extract the midamble data of time slot 0 in the wireless mouthful of required data of this power measurement, adopt the midamble data of the required midamble sign indicating number of this power measurement and extraction to carry out correlation computations, obtain current measurement frequency Primary Common Control Physical Channel P-CCPCH power.This thick synchronizing information can be public synchronizing information of each frequency of TD-SCDMA system or each frequency of TD-SCDMA system effective synchronizing information separately.
With the TD-SCDMA system 2 frequency f1, f2 to be measured are arranged below, the current frequency of measurement is f1, and the length of subframe is that 6400chips+128chips is that example describes.
This method comprises as shown in Figure 3:
Whether step 101, terminal judges are measured at f1 first, if execution in step 102 then, otherwise execution in step 103.
The wireless mouthful of data that step 102, terminal receive 4000chips detect synchronously, obtain this power measurement synchronizing information T1 execution in step 104 afterwards.
Step 103, terminal according to before the synchronizing information T0 of the TD-SCDMA system subframe of measuring and preserving, receive midamble data and the DwPTS time slot data of the required time slot of this power measurement 0, detect synchronously and obtain this power measurement synchronizing information T1.
Whether step 104, terminal judges have new SYNC_DL, if execution in step 105 then, otherwise execution in step 106.
The midamble that step 105, terminal are carried out new SYNC_DL correspondence detects, and obtains the required midamble sign indicating number of this power measurement.
Step 106, terminal are according to this power measurement synchronizing information T1, extract the required TS0midamble data of this power measurement, adopt the TS0midamble data of the required midamble sign indicating number of this power measurement and extraction to carry out correlation computations, obtain f1P-CCPCH power.
Wherein in the step 101, whether the current measurement frequency of terminal judges f1 is that terminal is measured it for the first time.When measuring frequency f2, also carry out similar step.
Wherein in the step 102, it is that this length of 4000chips(is relevant with the radio frequency hardware performance of each terminal that terminal directly receives length, but should be less than the length of subframe) wireless mouthful of data of TD-SCDMA, detect all effective descending synchronous codes (SYNC-DL) on the sync bit of detection TD-SCDMA and this frequency synchronously.If it is example here with M=2 that synchronization failure or can not find effective descending synchronous code, terminal then repeat M(at this measurement frequency) the wireless mouthful of data of inferior reception equal length 4000chips carry out synchronously (the wireless mouth data that also can receive different length 3000chips are certainly for the second time carried out synchronously).In the present embodiment when f1 measures first, number of repetition M can and receive length according to gain of received signal and determine, for example under a gain situation preferably, reception length is 4000chips, then number of repetition M can be defined as twice, under the situation of a relatively poor gain, same reception length is 4000chips, then number of repetition M can be defined as three times, certainly under the situation of the variation that receives length to number of repetition M also influential same gain, reception length is 4000chips, number of repetition M can be defined as twice, reception length is 3000chips, and number of repetition M may be defined as three times, and principle is to be that wireless mouthful of data of the TD-SCDMA of 6400+128chips all receive and are as the criterion with length.If not measure first at f1, number of repetition M directly determines according to gain of received signal.The wireless mouthful of data of TD-SCDMA that receive 4000chips in this step are in order to consider the characteristic of the different system of GSM itself, and for example the different system of GSM can provide the empty slot of 5ms to make the data of a subframe of terminal reception.Therefore adopt repeatedly a small amount of strategy that receives, increasing can be received the probability of DwPTS time slot, if after repeatedly receiving, still do not have to finish synchronous detection at f1, then jumps to f2 and measures certainly.Certainly measure first at f1 in this step and also can directly receive wireless mouthful of data of TD-SCDMA that 5ms length is 6400+128chips.Terminal will f1 first the synchronizing information that obtains of synchro measure preserve, next time when f1 carries out synchro measure, just can utilize the synchronizing information T01 that obtains of synchro measure first at f1, receive wireless mouthful of required data of (for the second time) power measurement next time, by that analogy, can utilize the synchronizing information T02 that the second time, synchro measure obtained at f1, receive wireless mouthful of required data of (for the third time) power measurement next time.
Wherein in the step 103, then utilize the synchronizing information of preserving (if the historical synchronizing information of this frequency is effective value, then utilize this sync bit, otherwise the TD-SCDMA synchronizing information TDDtiming that utilizes terminal to safeguard) receive wireless mouthful of required data of this power measurement, wireless mouthful of required data of this power measurement comprise the Mid-amble data of time slot 0 and the data of DwPTS.Receive wireless mouthful of required data of this power measurement herein; the error that the synchronizing information that needs consideration to preserve exists; be respectively to consider suitable protection length about the Mid-amble of 144chips in length; and be respectively to consider suitable protection length about the SYNC-DL of 64chips in length; certainly be that the number of chips of the wireless mouthful of data that this power measurement is required is less than the number of chips of a subframe as principle.The synchronizing information and the frequency f1 that utilize the DwPTS that receives to detect TD-SCDMA go up all effective SYNC-DL sign indicating numbers.If synchronization failure or can not find effective SYNC-DL sign indicating number, terminal then carry out at Mid-amble data and the DwPTS that frequency f1 repeats the synchronizing information receiving slot 0 that the inferior utilization of M ' (being example with M=2) preserves here synchronously.
Wherein in the step 104, need judge that effective SYNC-DL sign indicating number whether in the cell list that terminal is preserved, preserves the Mid-amble sign indicating number of SYNC-DL sign indicating number and correspondence in the cell list, as shown in table 1:
SYNC-DL sign indicating number label Mid-amble sign indicating number label
1 1
2 5
Table 1
If detecting the effective SYNC-DL sign indicating number label that obtains in the step so before is 1, can determine directly that then the required Mid-amble sign indicating number of this power measurement label is 1.
In the step 105, if detecting the effective SYNC-DL sign indicating number label that obtains in the step is 3 before, then needing to carry out Mid-amble according to this SYNC-DL sign indicating number detects, the Mid-amble sign indicating number that detects final correspondence from SYNC-DL sign indicating number 3 possibilities corresponding Mid-amble sign indicating number 9, Mid-amble sign indicating number 10, Mid-amble sign indicating number 11 and Mid-amble sign indicating number 12 is Mid-amble sign indicating number 9, and Mid-amble sign indicating number 9 is exactly the required Mid-amble sign indicating number of this power measurement.
In the step 106, terminal goes up the power measurement that P-CCPCH is carried out in all residential quarters to frequency f1, comprises the historical residential quarter of preservation and the new residential quarter that step 105 detects SYNC-DL sign indicating number 3 correspondences that obtain.Terminal is utilized the co-channel interference algorithm that disappears mutually, obtains the channel impulse response of each residential quarter, and calculates the power of each first window of residential quarter as the power of this residential quarter P-CCPCH.Terminal is preserved efficient cell and the corresponding P-CCPCH performance number on the frequency f1.
Certainly adopt frequency f1 upward to detect the synchronizing information that obtains and carry out synchro measure, be in order to obtain wireless mouthful of required data of power measurement comparatively accurately, and finish synchro measure, but in order to guarantee that the situation of utilizing this sync bit not have to finish synchro measure takes place, terminal need be safeguarded a TD-SCDMA synchronizing information TDDtiming.
After execution of step 106, terminal is preserved and is detected the synchronizing information Pos that obtains under the frequency f1 Current, and the strongest signal to noise ratio snr on the measurement frequency f1 Current(dB), if frequency f1 measures the frequency of measuring at first in the frequency (f1, f2) for all, then set TDDtiming=Pos Current, SNR History(dB)=SNR Current(dB), wherein TDDtiming is the TD-SCDMA system synchronous information, SNR History(dB) be historical signal to noise ratio, otherwise utilize with the renewal TDDtiming that judges:
If SNR Current(dB)-SNR History(dB)>δ dB, wherein the adjusting parameter of δ for setting.
TDDtiming=Pos then CurrentAnd SNR History(dB)=SNR CurrentOtherwise TDDtiming and SNR (dB), History(dB) remain unchanged.
The effect of TD-SCDMA system synchronous information TDDtiming is, after when detecting synchronously again, if terminal is utilized this (for example the 5th time) power measurement synchronizing information T1, after receiving again wireless mouthful of required data of (the 6th time) power measurement, detect failure synchronously, then terminal utilizes TD-SCDMA system synchronous information TDDtiming to receive wireless mouthful of required data of this time (the 6th time) power measurement again, and detects synchronously.Wherein δ is adjustable parameter, and relevant with certainty of measurement and synchronous detection algorithm, recommendation is 5dB.
Synchronizing information T0 among " the synchronizing information T0 of the TD-SCDMA system subframe of measuring before and preserving " that in step 103, mentions, can be (as first) synchronizing information T01 of measuring at frequency f1 once before the terminal, or before the terminal in twice measurement of frequency f1, and the synchronizing information that the synchronizing information T01 that measures for twice and synchronizing information T02 are carried out obtaining after the smoothing processing.Said smoothing processing can be that T01 and T02 summation are got average more herein.
First embodiment of the invention provides the device of measuring the TD-SCDMA system power under a kind of different system, as shown in Figure 4, comprising:
Receiver module 201, be used at current measurement frequency, the synchronizing information of the TD-SCDMA system subframe of measuring before utilizing and preserving, receive wireless mouthful of required data of this power measurement, the number of chips of the wireless mouthful of data that this power measurement is required is less than the number of chips of a subframe, and wireless mouthful of required data of this power measurement comprise training sequence territory midamble data and the descending pilot frequency DwPTS time slot data of time slot 0;
Synchronization module 202 is used for utilizing the descending pilot frequency time slot data that receive, and wireless mouthful of required data of this power measurement is detected synchronously obtain this power measurement synchronizing information, and then obtain the required training sequence of this power measurement territory sign indicating number;
Computing module 203, be used for according to this power measurement synchronizing information, extract the training sequence numeric field data of time slot 0 in the wireless mouthful of required data of this power measurement, adopt the training sequence numeric field data of the required training sequence of this power measurement territory sign indicating number and extraction to carry out correlation computations, obtain current measurement frequency Primary Common Control Physical Channel power measurement.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.

Claims (10)

1. measure the method for TD SDMA TD-SCDMA system power under the different system, it is characterized in that, comprising:
Terminal is at current measurement frequency, the synchronizing information of the TD-SCDMA system subframe of measuring before utilizing and preserving, receive wireless mouthful of required data of this power measurement, the number of chips of the wireless mouthful of data that this power measurement is required is less than the number of chips of a subframe, and wireless mouthful of required data of this power measurement comprise training sequence numeric field data and the descending pilot frequency time slot data of time slot 0;
The descending pilot frequency time slot data that the terminal utilization receives detect synchronously wireless mouthful of required data of this power measurement and to obtain this power measurement synchronizing information, and then obtain the required training sequence of this power measurement territory sign indicating number;
Terminal is according to this power measurement synchronizing information, extract the training sequence numeric field data of time slot 0 in the wireless mouthful of required data of this power measurement, adopt the training sequence numeric field data of the required training sequence of this power measurement territory sign indicating number and extraction to carry out correlation computations, obtain current measurement frequency Primary Common Control Physical Channel power.
2. the method for claim 1 is characterized in that, terminal obtains the required training sequence of this power measurement territory sign indicating number and is specially:
Terminal is utilized this power measurement synchronizing information, obtains the effective descending synchronous code in the wireless mouthful of required data of this measurement;
Terminal is if preserve the corresponding relation of this effective descending synchronous code that measures and training sequence territory sign indicating number, then directly obtain the required training sequence of this power measurement territory sign indicating number, detect otherwise carry out training sequence territory sign indicating number according to the effective descending synchronous code that obtains, obtain the required training sequence of this power measurement territory sign indicating number.
3. the method for claim 1, it is characterized in that, also comprise: terminal is when measuring current measurement frequency first, received quantity is that wireless mouthful of data of N chip detect synchronously, if detect failure synchronously, then repeat the wireless mouthful of data that received quantity is N ' chip at this frequency, N and N ' are all less than the chip number of a subframe.
4. method as claimed in claim 3 is characterized in that, terminal is determined the number of times that repeats to receive according to gain of received signal.
5. method as claimed in claim 4 is characterized in that, when terminal is measured first at current measurement frequency, according to the size of gain of received signal and N, determines the number of times that repeats to receive.
6. the method for claim 1 is characterized in that, the synchronizing information of the TD-SCDMA system subframe of measuring before the terminal utilization and preserving receives wireless mouthful of required data of this power measurement and is specially:
The synchronizing information of the TD-SCDMA system subframe of measuring and preserving at current measurement frequency before the terminal utilization receives wireless mouthful of required data of this power measurement.
7. method as claimed in claim 6 is characterized in that, terminal also comprises after detecting success synchronously:
Terminal is preserved the synchronizing information Pos that detection obtains under the current measurement frequency Current, and measure the strongest signal to noise ratio snr on the current measurement frequency Current(dB), if current measurement frequency is measured the frequency of measuring at first in the frequency for all, then set TDDtiming=Pos Current, SNR History(dB)=SNR Current(dB), wherein TDDtiming is the TD-SCDMA system synchronous information, SNR History(dB) be historical signal to noise ratio, upgrade TDDtiming otherwise utilize to judge: if SNR Current(dB)-SNR History(dB)>δ dB, wherein the adjusting parameter of δ for setting, then TDDtiming=Pos CurrentAnd SNR History(dB)=SNR CurrentOtherwise TDDtiming and SNR (dB), History(dB) remain unchanged;
When if terminal detects again synchronously, utilize this in the synchronizing information of the TD-SCDMA system subframe of current measurement frequency measurement and preservation, after receiving wireless mouthful of required data of this power measurement, detect failure synchronously, after then terminal utilizes TD-SCDMA system synchronous information TDDtiming to receive wireless mouthful of required data of this power measurement again, detect synchronously.
8. method as claimed in claim 7 is characterized in that, regulates parameter δ and is set at 5.
9. method as claimed in claim 7, it is characterized in that, the synchronizing information of the TD-SCDMA system subframe of measuring and preserving at current measurement frequency before the terminal is, the synchronizing information that once measures at current measurement frequency before the terminal, or repeatedly measure at current measurement frequency before the terminal, and the synchronizing information that repeatedly measures carried out the synchronizing information that obtains after the smoothing processing.
10. measure the device of TD SDMA TD-SCDMA system power under the different system, it is characterized in that, comprising:
Receiver module, be used at current measurement frequency, the synchronizing information of the TD-SCDMA system subframe of measuring before utilizing and preserving, receive wireless mouthful of required data of this power measurement, the number of chips of the wireless mouthful of data that this power measurement is required is less than the number of chips of a subframe, and wireless mouthful of required data of this power measurement comprise training sequence numeric field data and the descending pilot frequency time slot data of time slot 0;
Synchronization module is used for utilizing the descending pilot frequency time slot data that receive, and wireless mouthful of required data of this power measurement is detected synchronously obtain this power measurement synchronizing information, and then obtain the required training sequence of this power measurement territory sign indicating number;
Computing module, be used for according to this power measurement synchronizing information, extract the training sequence numeric field data of time slot 0 in the wireless mouthful of required data of this power measurement, adopt the training sequence numeric field data of the required training sequence of this power measurement territory sign indicating number and extraction to carry out correlation computations, obtain current measurement frequency Primary Common Control Physical Channel power measurement.
CN2011101095132A 2011-04-28 2011-04-28 Method and device for measuring power of time division-synchronous code division multiple access (TD-SCDMA) system in heterogeneous system Expired - Fee Related CN102137426B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101095132A CN102137426B (en) 2011-04-28 2011-04-28 Method and device for measuring power of time division-synchronous code division multiple access (TD-SCDMA) system in heterogeneous system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101095132A CN102137426B (en) 2011-04-28 2011-04-28 Method and device for measuring power of time division-synchronous code division multiple access (TD-SCDMA) system in heterogeneous system

Publications (2)

Publication Number Publication Date
CN102137426A CN102137426A (en) 2011-07-27
CN102137426B true CN102137426B (en) 2013-07-17

Family

ID=44297061

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011101095132A Expired - Fee Related CN102137426B (en) 2011-04-28 2011-04-28 Method and device for measuring power of time division-synchronous code division multiple access (TD-SCDMA) system in heterogeneous system

Country Status (1)

Country Link
CN (1) CN102137426B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101635977A (en) * 2008-07-22 2010-01-27 中兴通讯股份有限公司 Method for completing time division neighbor measurement based on idle frame
CN101651976A (en) * 2008-07-18 2010-02-17 俊茂微电子(上海)有限公司 Method and device for detection and synchronization of broadcast channel propagation time interval
CN101820637A (en) * 2010-03-23 2010-09-01 展讯通信(上海)有限公司 Measurement method of time division-synchronous code division multiple access system and dual mode terminal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050238060A1 (en) * 2004-04-23 2005-10-27 Kuntz Thomas L Synchronizing to GSM RF downlink signal frame timing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101651976A (en) * 2008-07-18 2010-02-17 俊茂微电子(上海)有限公司 Method and device for detection and synchronization of broadcast channel propagation time interval
CN101635977A (en) * 2008-07-22 2010-01-27 中兴通讯股份有限公司 Method for completing time division neighbor measurement based on idle frame
CN101820637A (en) * 2010-03-23 2010-09-01 展讯通信(上海)有限公司 Measurement method of time division-synchronous code division multiple access system and dual mode terminal

Also Published As

Publication number Publication date
CN102137426A (en) 2011-07-27

Similar Documents

Publication Publication Date Title
CN105828349A (en) Far-end interference detection method and far-end interference detection device based on TD-LTE system
CN101026408B (en) Frequency fine correction method and device for time division-synchronous CDMA system
US20110228711A1 (en) Method of and apparatuses for recognizing an out-of-sync base station
CN101043248A (en) Method for repeater to obtain switch point in TD-SCDMA system
CN101820321A (en) Detection method for LTE downlink subsidiary synchronizing channel
US9247491B2 (en) Receiver and a method therein
EP2779761B1 (en) Method and apparatus for acquiring synchronization in code division multiple access system
TW201130270A (en) An up-link SDMA receiver for WiMAX
CN101577576B (en) TD-SCDMA terminal initial downlink synchronization method
CN104754623B (en) The small region search method and system eliminated based on LTE system interference
CN101635977B (en) Method for completing time division neighbor measurement based on idle frame
CN105634542B (en) A kind of TD-SCDMA multi-cell searchs method
CN107079410A (en) It is synchronous with movement station to assist
CN100591063C (en) Method and apparatus for acquiring circulating prefix-length information
CN103052137B (en) Cell searching method
CN102137426B (en) Method and device for measuring power of time division-synchronous code division multiple access (TD-SCDMA) system in heterogeneous system
CN104980184B (en) Small region search method and equipment for TD-SCDMA system
CN102271384B (en) Primary cell searching method for long term evolution (LTE) system
CN101394650A (en) Control apparatus and method for accelerating cell searching when coverage loss
US9055525B2 (en) Method and apparatus for acquiring synchronization in code division multiple access system
CN101854704B (en) TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) cell search method and terminal equipment
CN105391473A (en) Cell searching system and method based on TD-LTE downlink reference signal
CN101394221A (en) Synchronization method, device and UE when measuring TD-SCDMA cell
CN103024770A (en) Dual-mode terminal and measuring method thereof
CN102421121B (en) Measurement method and measurement device for TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) neighbourhood by virtue of mobile terminal

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130717

Termination date: 20180428

CF01 Termination of patent right due to non-payment of annual fee