CN101651486B - Mobile communication system and method for acquiring broadcast information by user equipment of mobile communication system - Google Patents
Mobile communication system and method for acquiring broadcast information by user equipment of mobile communication system Download PDFInfo
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- CN101651486B CN101651486B CN2008100416280A CN200810041628A CN101651486B CN 101651486 B CN101651486 B CN 101651486B CN 2008100416280 A CN2008100416280 A CN 2008100416280A CN 200810041628 A CN200810041628 A CN 200810041628A CN 101651486 B CN101651486 B CN 101651486B
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Abstract
The invention discloses a mobile communication system and a method for acquiring broadcast information by user equipment of the mobile communication system. The method comprises the following steps of: not detecting a S1/S2 sequence, directly taking information on time slot 0 (TSO) in the current four sub-frames as BCH information for demodulation, performing CRC verification on demodulated code words, if the CRC verification is right, judging the current four sub-frames contain a broadcast information block; and if the CRC verification is not right, buffering the TSO demodulated results of the later three frames of the current four frames, receiving the next frame, taking the information in the TSO of the next frame as a BCH for demodulation, combining the result with the TSO demodulated results of the buffered three frames into a BCH information block, performing the CRC verification on the BCH information block, if the CRC verification is right, indicating that the TSO in the newly combined four frames is BCH, and if CRC verification is not right, continuing trying in the next frame until the CRC verification is right. The method greatly improves the BCH information acquiring speed, reduces the error detection probability and shortens the detection time.
Description
Technical field
The present invention relates to Cell searching technology in the GSM, especially relate to subscriber equipment in the GSM (UE) obtains broadcast message in cell search process method.
Background technology
For a kind of communication system, particularly GSM, reading of system information is the key point of receiving terminal connecting system.And in the middle of time division duplex (TDD) GSM, the position of the broadcast channel of bearing system information place frame (subframe) is generally reflected by one group of specific relative phase modulation intelligence.
In TD SDMA (TD-SCDMA) GSM; A radio frames is divided into the subframe of two continuous 5ms; Each subframe comprises seven business time-slots and three special time slots again, and is as shown in Figure 1, and time slot 0 (TSO) is fixed as descending time slot; And three special time slots, be respectively descending pilot frequency time slot (DwPTS), protection time slot (GP) and uplink pilot time slot (UpPTS).Each DwPTS is used for sending descending pilot frequency sequence (SYNC-DL), and subscriber equipment will be set up down-going synchronous through obtaining SYNC-DL.
In the TD-SCDMA system, each time slot all is a burst structure, and so-called burst structure is meant structure as shown in Figure 2, and the center fixed position of the burst structure of each time slot is training sequence (midamble) sign indicating number.
The position of broadcast channel (BCH) place frame by in downlink synchronous sequence (SYNC-DL) and the TSO time slot between training sequence code (midamble) relative modulation phase sequence provide.The Cell Broadcast CB that subscriber equipment read is to send periodically continuously, takies preceding two sign indicating numbers of each subframe TSO, and a complete broadcast message need be sent in continuous a plurality of frames and finished, and these continuous a plurality of frames are called the control multi-frame.
The modulation phase sequence of the SYNC-DL that control possibly occur in the multi-frame has two kinds, i.e. S1 and S2, and S1 representes that promptly relative phase is (135; 45,225,135) modulation phase sequence of degree; S2 representes that promptly relative phase is (315,225,315; 45) modulation phase sequence of degree, next control multi-frame will be reused identical modulation phase sequence.
For the TD communication system,, then show in the TSO time slot of next frame and contain broadcast channel (BCH) if the relative modulation phase sequence of the SYNC-DL of continuous 4 sub-frame is S1.
It is thus clear that relatively modulation phase sequence information is that UE obtains system information position and the synchronous key point of control multi-frame, China's invention application number is that 03150877.4 application for a patent for invention and application number are that 200610028852.7 application for a patent for invention all is that this relative modulation phase sequence comparison method that adopts is confirmed the BCH position.
In cell search process, search time, detection probability and probability of false detection etc. all have great importance, and therefore, the position that how to obtain the S1/S2 sequence quickly and accurately just becomes key.Method commonly used at present is that the data of collecting a large amount of frames are continuously carried out disposable judgement; This method need wait for that the time of length just can be judged; Thereby make the time loss of whole search procedure maintain higher level all the time; If disposable judgement failure, judgement so next time need be waited for identical time and frame number again, and this will can not put up with for the cellphone subscriber.
The present invention proposes the method for a kind of definite BCH position, thereby be convenient to read broadcast message, need not compare S1 or S2 sequence,, reduce probability of false detection, shorten detection time accelerating the speed that BCH information is obtained greatly.
Summary of the invention
Technical problem to be solved by this invention provides the method that detects broadcast message (BCH) among a kind of TD-SCDMA, need not compare relative modulation phase sequence, with accelerating the speed that BCH information is obtained greatly, reduces probability of false detection, shortens detection time.
The present invention has disclosed the method that a kind of mobile communication subscriber equipment obtains broadcast message; Do not go to detect the S1/S2 sequence; Directly the information of TSO in current 4 sub-frame is used as the BCH demodulates information; And the code word after the demodulation carried out CRC check, if CRC check is correct, then judge just to comprise a broadcast message piece in current 4 frames.If CRC check is incorrect; Then cushion the TSO demodulation result of back 3 frames in current 4 frames; Receive next frame, and information among its TSO is used as the BCH demodulation, merge into a BCH block of information with 3 frame TSO demodulation result of buffering and carry out CRC check; If CRC just-really, be exactly BCH among the TSO in new 4 frames of forming of expression then.
If CRC is incorrect, then continue to attempt at next frame, correct up to CRC.
Step 1: after the subscriber equipment start, at first search downlink synchronous sequence, and set up down-going synchronous according to downlink synchronous sequence and a sub-district;
Step 2:, obtain scrambler and basic training sequences sign indicating number according to the downlink synchronous sequence that searches;
Step 3: the TSO in current 4 sub-frame is used as the BCH channel, demodulation BCH information wherein;
Step 4: the BCH block of information to after the demodulation is carried out CRC check, if the CRC check result correctly then carry out step 6, if erroneous results then carry out step 5;
Step 5: the demodulation result of buffering back 3 frames, and receive next frame, its TSO is used as the BCH channel carries out demodulation, form new BCH block of information with the demodulation result of 3 frames of aforementioned buffering, return step 4;
Step 6: read broadcast message, select the sub-district to carry out resident.
If above-mentioned CRC check number of times is greater than N, still check errors then is judged as the initialization failure, finishes cell search process, returns initial condition.
The present invention helps simplifying the location of broadcast information position, accelerates the speed that BCH information is obtained greatly, shortens detection time.
Description of drawings
Fig. 1 is subframe structure figure;
Fig. 2 is structure of time slot figure;
Fig. 3 is the flow chart that the present invention realizes;
Fig. 4 is that the present invention increases the flow chart that counting judges that the back is realized.
Embodiment
The present invention proposes a kind of new method of in time division duplex mobile communication system, confirming broadcast channel; This paper is that example is described with TD-SCDMA; No matter it is be TSM communication system (TD-CDMA overGSM) or LCR (low spreading rate) communication system, all suitable equally.
In search of initial zone, UE searches a sub-district, and detects the DwPTS of its emission, sets up down-going synchronous, obtains cell scrambling and basic training sequences midamble sign indicating number, and the control multi-frame is synchronous, reads BCH information then.Search of initial zone carries out according to the following steps:
1, search DwPTS:UE utilizes the SYNC-DL sequence to obtain the DWPTS of a certain sub-district, sets up down-going synchronous.Here, some among 32 of must identify that this sub-district uses of UE, the SYNC-DL.
2, identification scrambler and basic midamble sign indicating number: UE need confirm the midamble sign indicating number of this sub-district, and this is to realize through the midamble sign indicating number that detects the TSO beacon channel.In the TD-SCDMA system, have 128 basic midamble sign indicating numbers, and non-overlapping copies, corresponding one group 4 the different basic midamble sign indicating numbers of each SYNC-DL sequence.
3, the position of the multi-frame Master Information Block of UE search BCH.
4, read BCH information: UE and read (entirely) broadcast message on the one or more BCH that search the sub-district, according to its result, whether decision accomplishes search of initial zone.
Wherein the 3rd step, adopt relative modulation phase sequence and S1/S2 sequence between SYNC-DL and the midamble to compare usually, confirm the position of BCH then, therefrom read BCH information again.
Block of information of BCH broadcast message of acquiescence is sent by 4 sub-frame, and complete broadcast message needs a plurality of block of informations to transmit.
The present invention is through directly operating current 4 sub-frame; Suppose that 4 current sub-frame are exactly the position of the multi-frame Master Information Block of BCH; With among its TSO 0; Whether the information of 1 code word is used as BCH information and is carried out demodulation, and correct through CRC check (CRC) detection, judges whether original hypothesis is correct.Idiographic flow is as shown in Figure 3:
301: the TSO in current 4 sub-frame is used as the BCH channel, demodulation BCH information wherein earlier;
302: the BCH block of information to after the demodulation is carried out CRC check;
303: if the CRC check result correctly then carry out step 305, if erroneous results then carry out step 304;
304: the demodulation result of buffering back three frames, and receive next frame, its TSO is used as the BCH channel carries out demodulation, form new BCH block of information with the demodulation result of 3 frames of aforementioned buffering and carry out CRC check, and get back to step 303;
305: read broadcast message, select the sub-district to carry out resident.
Certainly, if through repeatedly separate the mediation CRC check, all can't obtain correct CRC result, then can not separate the mediation CRC check for a long time always; Therefore in the present invention, set a counter, carry out a CRC and judge; Then counter adds 1, and after counter accumulative total reached N, CRC check was still incorrect; Then judge this Cell searching failure, return initial condition, unison counter rule zero.
Here mention N time, can rule of thumb be worth setting, in the scope of tolerance, confirm a numerical value.
Equally when CRC check is correct, also counter is advised zero, use during with convenient Cell searching next time.
Under the situation of setting counter, following like each step of Fig. 4:
401: make n=0, the TSO in current 4 sub-frame is used as the BCH channel, demodulation BCH information wherein earlier;
402: the BCH block of information to after the demodulation is carried out CRC check;
403: if the CRC check result correctly then carry out step 405, if erroneous results then carry out step 404;
404:n=n+1, if n is smaller or equal to N, the demodulation result of buffering back three frames, and receive next frame is used as its TSO as the BCH channel and is carried out demodulation, forms new BCH block of information with the demodulation result of 3 frames of aforementioned buffering and carries out CRC check, and get back to step 403; If n greater than N, then finishes Cell searching, return initial condition;
405: read broadcast message, select the sub-district to carry out resident.
Need not relative phase modulation is measured calculating through said method, need not compare S1 or S2 sequence,, reduce probability of false detection, shorten detection time accelerating the speed that BCH information is obtained greatly.
Claims (9)
1. a mobile communication subscriber equipment obtains the method for broadcast message, in time division duplex mobile communication system, carries out fast the broadcast channel position and confirms, reads broadcast message BCH, it is characterized in that comprising the steps:
Step 1: after the subscriber equipment start, at first search downlink synchronous sequence, and set up down-going synchronous according to downlink synchronous sequence and a sub-district;
Step 2:, obtain scrambler and basic training sequences sign indicating number according to the downlink synchronous sequence that searches;
Step 3: the TS0 of current 4 sub-frame is used as the BCH channel, demodulation BCH information wherein;
Step 4: the BCH block of information to after the demodulation is carried out CRC check, if the CRC check result correctly then carry out step 6, if erroneous results then carry out step 5;
Step 5: the demodulation result of buffering back 3 frames, and receive next frame, its TS0 is used as the BCH channel carries out demodulation, form new BCH block of information with the demodulation result of 3 frames of aforementioned buffering, return step 4.
Step 6: read broadcast message, select the sub-district to carry out resident.
2. a kind of mobile communication subscriber equipment as claimed in claim 1 obtains the method for broadcast message, it is characterized in that: described tdd communication systems is the TD-SCDMA system.
3. a kind of mobile communication subscriber equipment as claimed in claim 1 obtains the method for broadcast message; It is characterized in that: described a kind of mobile communication subscriber equipment obtains the method for broadcast message, is set with a counter, is used for calculating the number of times of CRC check; When N CRC check of process; Still in the time of wrong, interrupt cell search process, show the initialization failure; Wherein N is more than or equal to 1.
4. a kind of mobile communication subscriber equipment as claimed in claim 3 obtains the method for broadcast message, it is characterized in that: in described step 3 counter is made zero.
5. a kind of mobile communication subscriber equipment as claimed in claim 3 obtains the method for broadcast message, it is characterized in that: after described step 4 was carried out CRC check, described counter added 1.
6. a kind of mobile communication subscriber equipment as claimed in claim 3 obtains the method for broadcast message, it is characterized in that: judge at the beginning in described step 5, when counter during greater than N, finish cell search process; Otherwise proceed.
7. a mobile communication subscriber equipment obtains the system of broadcast message, in time division duplex mobile communication system, carries out fast broadcast information position and confirms, reads broadcast message BCH, it is characterized in that, comprising:
Be used for after subscriber equipment start, at first searching downlink synchronous sequence, and set up the module of down-going synchronous according to downlink synchronous sequence and sub-district;
Be used for obtaining the module of scrambler and basic training sequences sign indicating number according to the downlink synchronous sequence that searches;
Be used for the TS0 of current 4 sub-frame is used as the BCH channel module of demodulation BCH information wherein;
Be used for the BCH block of information after the demodulation is carried out the module of CRC check;
Be used for when the CRC check erroneous results; The demodulation result of buffering back 3 frames; And reception next frame; Its TS0 is used as the BCH channel carries out demodulation, form the module of new BCH block of information with the demodulation result of 3 frames of aforementioned buffering, said new BCH block of information offers the module that is used for the BCH block of information after the demodulation is carried out CRC check;
Be used for when the CRC check result is correct, reading broadcast message, select the sub-district to carry out resident module.
8. a kind of mobile communication subscriber equipment as claimed in claim 7 obtains the system of broadcast message, it is characterized in that: the system that described mobile communication subscriber equipment obtains broadcast message is the TD-SCDMA system.
9. a kind of mobile communication subscriber equipment as claimed in claim 7 obtains the system of broadcast message, it is characterized in that: also comprise: the counter that is used for calculating the number of times that carries out CRC check; Be used in the time of still wrong, interrupting cell search process, show the module of initialization failure when through N CRC check; Wherein N is more than or equal to 1.
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| CN101795155B (en) * | 2010-03-02 | 2013-01-02 | 大唐联诚信息系统技术有限公司 | Method and device for synchronizing wireless communication system |
| CN102075952A (en) * | 2011-02-14 | 2011-05-25 | 电信科学技术研究院 | Method and equipment for eliminating and processing interference |
| US8787262B2 (en) * | 2011-07-15 | 2014-07-22 | Qualcomm Incorporated | Receiving cell broadcast (CB) messages |
| CN111372298B (en) * | 2020-02-27 | 2022-03-25 | 上海金卓科技有限公司 | Wireless access method, device, equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595856A (en) * | 2003-09-10 | 2005-03-16 | 凯明信息科技股份有限公司 | Method and apparatus for mobile communication system terminal to acquire broadcasting information device |
| CN1627835A (en) * | 2003-12-12 | 2005-06-15 | 西门子（中国）有限公司 | Method for testing modulated phase cluster of sync code in time division synchronization CDMA access system |
| CN1783752A (en) * | 2004-12-02 | 2006-06-07 | 凯明信息科技股份有限公司 | Method for obtaining broadcast information position in time-division duplex mobile communication system |
| CN1893344A (en) * | 2005-07-04 | 2007-01-10 | 上海原动力通信科技有限公司 | Multi-carrier-wave communication system TSO time-slot resource distribution method and grouped data transmission method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595856A (en) * | 2003-09-10 | 2005-03-16 | 凯明信息科技股份有限公司 | Method and apparatus for mobile communication system terminal to acquire broadcasting information device |
| CN1627835A (en) * | 2003-12-12 | 2005-06-15 | 西门子（中国）有限公司 | Method for testing modulated phase cluster of sync code in time division synchronization CDMA access system |
| CN1783752A (en) * | 2004-12-02 | 2006-06-07 | 凯明信息科技股份有限公司 | Method for obtaining broadcast information position in time-division duplex mobile communication system |
| CN1893344A (en) * | 2005-07-04 | 2007-01-10 | 上海原动力通信科技有限公司 | Multi-carrier-wave communication system TSO time-slot resource distribution method and grouped data transmission method |
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