CN102318205A - Signal demodulation method and receiving device - Google Patents
Signal demodulation method and receiving device Download PDFInfo
- Publication number
- CN102318205A CN102318205A CN2011800010652A CN201180001065A CN102318205A CN 102318205 A CN102318205 A CN 102318205A CN 2011800010652 A CN2011800010652 A CN 2011800010652A CN 201180001065 A CN201180001065 A CN 201180001065A CN 102318205 A CN102318205 A CN 102318205A
- Authority
- CN
- China
- Prior art keywords
- sampling point
- point data
- carrier
- sync bit
- interface ratio
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
The invention provides a signal demodulation method and receiving device, involving the area of communication, to solve the low resolution, inaccuracy of synchronization position, the poverty of demodulation performance of the existing receiver. The methods include, outputing at least two data samples in one symbol period after automatic gain control processing; conducting synchronization position calculation, channel estimating, and carrier to interference ratio calculation respectively with the said at least two data samples;selecting the sample data with the largest carrier to interference ratio as data to be demodulated, then, choosing the results of the channel estimation and synchronization position calculation of the said sample data to demodulate. The invention is employed for signal demodulation.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of signal demodulating method and receiving system
Background technology
A key character of radio communication is to have multipath transmisstion, and the signal of same emission source arrives same receiver through different propagation paths, often has the small time difference.These signals that successively reach are interfered each other, form multipath fading.There is intersymbol interference in this signal that will cause arriving receiver, reduces the signal to noise ratio of signal.
In 3GPP (3rd Generation Partnership Project, third generation partner program) agreement, according to different multipath fading types; Defined GSM (global system for mobile communications; Global system for mobile communications) multiple representative channel scene, comprising Static (static state), TU (typical city); RA (grass roots), HT (mountain region environment) etc.The difference of these channel circumstances is that the delay of multipath is different with amplitude.Along with the receiver rate travel is different, the delay of multipath and decline also change.
In above-mentioned each representative channel scene, a distinguishing feature of HT (mountain region environment) channel is to have 2 amplitudes to equate the most powerful path that the position is adjacent.And traditional G SM receiver sync bit precision is lower, and resolution can only reach 1 symbol, therefore under HT (mountain region environment) channel; 2 most powerful paths for adjacent existence; The synchronous computing module of existing receiver is difficult to distinguish, thereby causes sync bit inaccurate, and demodulation performance descends.
Summary of the invention
Embodiments of the invention provide a kind of signal demodulating method and receiving system, and existing receiving system resolution is low, sync bit inaccurate, the not good problem of demodulation performance to solve.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, a kind of signal demodulating method is provided, comprises:
At least 2 sampling point data after the automatic gain control and treatment in 1 symbol period of output;
To said at least 2 sampling point data, carry out sync bit calculating, channel estimating and carrier/interface ratio respectively and calculate;
Select the maximum sampling point data of carrier/interface ratio value as data to be demodulated, select said sampling point data corresponding channel estimation results, sync bit result of calculation, carry out demodulation.
On the one hand, a kind of receiving system is provided, comprises:
The automatic gain controlled processing unit is used to carry out the automatic gain control and treatment, handles at least 2 sampling point data in 1 symbol period of back output;
Computing unit is used for to said 2 sampling point data at least, carries out sync bit calculating, channel estimating and carrier/interface ratio respectively and calculates;
Selected cell; Be used to select the maximum sampling point data of carrier/interface ratio value as data to be demodulated; Select said sampling point data corresponding channel estimation results, sync bit result of calculation, and the data said to be demodulated that will select, channel estimation results, sync bit result of calculation send to said demodulating unit;
Demodulating unit is used for the data of selecting according to said selected cell said to be demodulated, said channel estimation results, sync bit result of calculation and carries out demodulation.
Signal demodulating method that the embodiment of the invention provides and receiving system, at least 2 sampling point data after the automatic gain control and treatment in 1 symbol period of output; To at least 2 sampling point data, carry out sync bit calculating, channel estimating and carrier/interface ratio respectively and calculate; Select the maximum sampling point data of carrier/interface ratio value as data to be demodulated, select these sampling point data corresponding channel estimation results, sync bit result of calculation, carry out demodulation.So, sampling number increase, sampling interval shorten in the identical time, after the automatic gain control and treatment, no longer export 1 sampling point data in 1 symbol period; But at least 2 sampling point data of output; And calculate the carrier/interface ratio of each sampling point data, therefore can in a plurality of sampling point data, select, through selecting best carrier/interface ratio to confirm best sampling point data and synchronizing information according to carrier/interface ratio; Thereby improved the selection precision of sync bit widely, improved demodulation performance.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The schematic flow sheet of the signal demodulating method that Fig. 1 provides for the embodiment of the invention;
The structural representation of the receiving system that Fig. 2 provides for the embodiment of the invention;
The structural representation of the receiving system that Fig. 3 provides for another embodiment of the present invention;
The structural representation of the receiving system that Fig. 4 provides for further embodiment of this invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The signal demodulating method that the embodiment of the invention provides, as shown in Figure 1, comprising:
S101, receiving system are exported at least 2 sampling point data in 1 symbol period after the automatic gain control and treatment.
Exemplary, can export 2 sampling point data in 1 symbol period after the automatic gain control and treatment; Perhaps, 3 sampling point data in 1 symbol period of output; Perhaps, at least 4 sampling point data in 1 symbol period of output.In practical application, complexity is not high when generally exporting 4 sampling point data in 1 symbol period, and effect is better.
S102, receiving system carry out sync bit calculating, channel estimating and carrier/interface ratio respectively and calculate at least 2 sampling point data.
Carrier/interface ratio is also claimed interference protection ratio, is meant the useful signal level that receives and the ratio of all non-useful signal level.Carrier/interface ratio be the signal of reflection telecommunications in the process of spatial transmission, receiving terminal receives the ratio of signal quality, C/I representes with English alphabet.
S103, receiving system select the maximum sampling point data of carrier/interface ratio value as data to be demodulated, select these sampling point data corresponding channel estimation results, sync bit result of calculation, carry out demodulation.
The signal demodulating method that the embodiment of the invention provides, at least 2 sampling point data after the automatic gain control and treatment in 1 symbol period of output; To at least 2 sampling point data, carry out sync bit calculating, channel estimating and carrier/interface ratio respectively and calculate; Select the maximum sampling point data of carrier/interface ratio value as data to be demodulated, select these sampling point data corresponding channel estimation results, sync bit result of calculation, carry out demodulation.So, sampling number increase, sampling interval shorten in the identical time, after the automatic gain control and treatment, no longer export 1 sampling point data in 1 symbol period; But at least 2 sampling point data of output; And calculate the carrier/interface ratio of each sampling point data, therefore can in a plurality of sampling point data, select, through selecting best carrier/interface ratio to confirm best sampling point data and synchronizing information according to carrier/interface ratio; Thereby improved the selection precision of sync bit widely, improved demodulation performance.
Especially, for HT (mountain region environment) channel scene, the beneficial effect that the embodiment of the invention produced is especially remarkable.A distinguishing feature of HT (mountain region environment) channel is to have 2 amplitudes to equate the most powerful path that the position is adjacent.Traditional G SM receiver sync bit precision is lower; Resolution can only reach 1 symbol, therefore under HT (mountain region environment) channel, for 2 most powerful paths of adjacent existence; The synchronous computing module of existing receiver is difficult to distinguish; The signal demodulating method that the embodiment of the invention provides, sampling number increase, sampling interval shorten in the identical time, after the automatic gain control and treatment, no longer export 1 sampling point data in 1 symbol period; But at least 2 sampling point data of output; And calculate the carrier/interface ratio of each sampling point data, therefore can in a plurality of sampling point data, select, through selecting best carrier/interface ratio to confirm best sampling point data and synchronizing information according to carrier/interface ratio; The resolution of receiving system is greatly improved, and has overcome the problem that traditional GSM receiver resolution is low under HT (mountain region environment) the channel scene, sync bit inaccurate, demodulation performance descends.
The receiving system 20 that the embodiment of the invention provides, as shown in Figure 2, comprising:
Automatic gain controlled processing unit 201 is used to carry out the automatic gain control and treatment, handles at least 2 sampling point data in 1 symbol period of back output.
Selected cell 203; Be used to select the maximum sampling point data of carrier/interface ratio value as data to be demodulated; Select this sampling point data corresponding channel estimation results, sync bit result of calculation, and the data to be demodulated that will select, channel estimation results, sync bit result of calculation send to demodulating unit 204.
Demodulating unit 204, the data to be demodulated, channel estimation results, the sync bit result of calculation that are used for selecting according to selected cell 203 are carried out demodulation.
The receiving system that the embodiment of the invention provides, at least 2 sampling point data after the automatic gain control and treatment in 1 symbol period of output; To at least 2 sampling point data, carry out sync bit calculating, channel estimating and carrier/interface ratio respectively and calculate; Select the maximum sampling point data of carrier/interface ratio value as data to be demodulated, select these sampling point data corresponding channel estimation results, sync bit result of calculation, carry out demodulation.So, sampling number increase, sampling interval shorten in the identical time, after the automatic gain control and treatment, no longer export 1 sampling point data in 1 symbol period; But at least 2 sampling point data of output; And calculate the carrier/interface ratio of each sampling point data, therefore can in a plurality of sampling point data, select, through selecting best carrier/interface ratio to confirm best sampling point data and synchronizing information according to carrier/interface ratio; Thereby improved the selection precision of sync bit widely, improved demodulation performance.
Further, as shown in Figure 3, computing unit 202 comprises:
Sync bit computing module 2021 is used to calculate the sync bit of sampling point data, and sync bit result of calculation is sent to channel estimation module 2022.
Carrier/interface ratio computing module 2023 is used for that this parameter Estimation result is carried out carrier/interface ratio and calculates.
Selected cell 203 comprises:
The 3rd gate 2034 is used for the sampling point data message according to comparator 2031 transmissions, from the output result of channel estimation module 2022, selects the corresponding channel estimation results of this sampling point data message.
Followingly the receiving system 40 that the embodiment of the invention provides is described with reference to Fig. 4.In the present embodiment, suppose to export 4 sampling point data in 1 symbol period after the automatic gain control and treatment.
Automatic gain controlled processing unit 401 is connected with 4 sync bit computing modules 402 respectively.The signal that receiving system 40 receives is exported 4 sampling point data in 1 symbol period after automatic gain controlled processing unit 401 is handled, these 4 sampling point data are transported to respectively in each sync bit computing module 402.On the other hand, 4 sampling point data of automatic gain controlled processing unit 401 outputs are connected with first gate 408 respectively again.
Four sync bit computing modules 402 are connected with four channel estimation modules 403 respectively, and four channel estimation module 403 other ends are connected with four carrier/interface ratio computing modules 404 respectively, and four carrier/interface ratio computing module 404 other ends are connected with comparator 405.
In addition, four sync bit computing modules 402 also are connected with second gate 407 respectively, and four channel estimation modules 403 are connected with the 3rd gate 406 respectively.First gate 408, second gate 407 and the 3rd gate 406 are connected with demodulating unit 409.
The signal that receiving system 40 receives is exported 4 sampling point data in 1 symbol period after automatic gain controlled processing unit 401 is handled, these 4 sampling point data are transported to respectively in each sync bit computing module 402 and first gate 408.Afterwards, four sync bit computing modules 402 carry out sync bit respectively and calculate, and result of calculation is sent to respectively in four channel estimation modules 403 and second gate 407.Then, four channel estimation modules 403 carry out channel estimating, and the result who obtains is sent in four carrier/interface ratio computing modules 404 and the 3rd gate 406.Afterwards, four carrier/interface ratio computing modules 404 calculate the carrier/interface ratio of each circuit-switched data respectively, and result of calculation is sent in the comparator 405.
At this moment, first gate 408 is selected the corresponding sampling point data of this sampling point data message, as data to be demodulated according to the sampling point data message that comparator 405 sends from the dateout of automatic gain controlled processing unit 401.Second gate 407 is selected the corresponding sync bit result of calculation of this sampling point data message according to this sampling point data message that comparator 405 sends from the output result of each sync bit computing module 402.The 3rd gate 406 is selected the corresponding channel estimation results of this sampling point data message according to this sampling point data message that comparator 405 sends from the output result of each channel estimation module 403.
At last, first gate 408, second gate 407 and the 3rd gate 406 are sent to demodulating unit 409 with the data of selecting and carry out demodulation.
In the present embodiment, the information of the sampling point data of comparator 405 transmissions can be the circuit number at a certain sampling point data place or the like.
The receiving system that the embodiment of the invention provides, 4 sampling point data after the automatic gain control and treatment in 1 symbol period of output; To 4 sampling point data, carry out sync bit calculating, channel estimating and carrier/interface ratio respectively and calculate; Select the maximum sampling point data of carrier/interface ratio value as data to be demodulated, select these sampling point data corresponding channel estimation results, sync bit result of calculation, carry out demodulation.So, sampling number increase, sampling interval shorten in the identical time, after the automatic gain control and treatment, no longer export 1 sampling point data in 1 symbol period; But export 4 sampling point data; And calculate the carrier/interface ratio of each sampling point data, therefore can in a plurality of sampling point data, select, through selecting best carrier/interface ratio to confirm best sampling point data and synchronizing information according to carrier/interface ratio; Thereby improved the selection precision of sync bit widely, improved demodulation performance.
In addition, export 4 sampling point data in 1 symbol period, in practical application, complexity is not high, realizes simple.
Especially, the receiving system that the invention described above embodiment provides, for HT (mountain region environment) channel scene, the beneficial effect that is produced is especially remarkable.A distinguishing feature of HT (mountain region environment) channel is to have 2 amplitudes to equate the most powerful path that the position is adjacent.Traditional G SM receiver sync bit precision is lower; Resolution can only reach 1 symbol, therefore under HT (mountain region environment) channel, for 2 most powerful paths of adjacent existence; The synchronous computing module of existing receiver is difficult to distinguish; The receiving system that the embodiment of the invention provides, sampling number increase, sampling interval shorten in the identical time, and through selecting best carrier/interface ratio to confirm best sampling point data and synchronizing information; The resolution of receiving system is greatly improved, and has overcome the problem that traditional GSM receiver resolution is low under HT (mountain region environment) the channel scene, sync bit inaccurate, demodulation performance descends.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.Concrete, the embodiment of the invention can adopt these two kinds of schemes of application-specific integrated circuit (ASIC) or FPGA (Field-Programmable Gate Array, field programmable gate array) to realize needed signal demodulation in the middle of actual implementation process.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of said claim.
Claims (5)
1. a signal demodulating method is characterized in that, comprising:
At least 2 sampling point data after the automatic gain control and treatment in 1 symbol period of output;
To said at least 2 sampling point data, carry out sync bit calculating, channel estimating and carrier/interface ratio respectively and calculate;
Select the maximum sampling point data of carrier/interface ratio value as data to be demodulated, select said sampling point data corresponding channel estimation results, sync bit result of calculation, carry out demodulation.
2. method according to claim 1 is characterized in that, at least 2 sampling point data in 1 symbol period of said output comprise:
Export 2 sampling point data in 1 symbol period; Perhaps, 3 sampling point data in 1 symbol period of output; Perhaps, 4 sampling point data in 1 symbol period of output.
3. a receiving system is characterized in that, comprising:
The automatic gain controlled processing unit is used to carry out the automatic gain control and treatment, handles at least 2 sampling point data in 1 symbol period of back output;
Computing unit is used for to said 2 sampling point data at least, carries out sync bit calculating, channel estimating and carrier/interface ratio respectively and calculates;
Selected cell; Be used to select the maximum sampling point data of carrier/interface ratio value as data to be demodulated; Select said sampling point data corresponding channel estimation results, sync bit result of calculation, and the data said to be demodulated that will select, channel estimation results, sync bit result of calculation send to said demodulating unit;
Demodulating unit is used for the data of selecting according to said selected cell said to be demodulated, said channel estimation results, sync bit result of calculation and carries out demodulation.
4. receiving system according to claim 3 is characterized in that, said computing unit comprises:
The sync bit computing module is used to calculate the sync bit of said sampling point data, and sync bit result of calculation is sent to channel estimation module;
Channel estimation module is used for said sync bit result of calculation is carried out parameter Estimation, and the parameter Estimation result is sent to the carrier/interface ratio computing module;
The carrier/interface ratio computing module is used for that said parameter Estimation result is carried out carrier/interface ratio and calculates.
5. receiving system according to claim 4 is characterized in that, said selected cell comprises:
Comparator is used for selecting the maximum of the carrier/interface ratio value of the various points of data that the carrier/interface ratio computing module obtains, and the sampling point data message that said maximum is corresponding sends to said first gate, second gate and the 3rd gate;
First gate is used for the said sampling point data message according to said comparator transmission, selects the corresponding sampling point data of said sampling point data message;
Second gate is used for the said sampling point data message according to said comparator transmission, selects the corresponding sync bit result of calculation of said sampling point data message;
The 3rd gate is used for the said sampling point data message according to said comparator transmission, from the output result of said channel estimation module, selects the corresponding channel estimation results of said sampling point data message.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/076860 WO2012106866A1 (en) | 2011-07-05 | 2011-07-05 | Signal demodulation method and receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102318205A true CN102318205A (en) | 2012-01-11 |
Family
ID=45429424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800010652A Pending CN102318205A (en) | 2011-07-05 | 2011-07-05 | Signal demodulation method and receiving device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102318205A (en) |
| WO (1) | WO2012106866A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207961A (en) * | 2015-10-10 | 2015-12-30 | 北京中科汉天下电子技术有限公司 | Signal carrier-to-interference ratio and signal gain estimation method and circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1602004A (en) * | 2004-10-18 | 2005-03-30 | 威盛电子股份有限公司 | Device and method for predicting channel pulse corresponding in global mobile communication system |
| JP2008154285A (en) * | 2006-04-19 | 2008-07-03 | Hitachi Kokusai Electric Inc | Symbol timing detector, and wireless terminal |
| CN101841410A (en) * | 2010-04-28 | 2010-09-22 | 华为技术有限公司 | Sampling point signal selection method and receiving end |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361423C (en) * | 2004-05-12 | 2008-01-09 | 北京信威通信技术股份有限公司 | Method for synchronizing down going service code channel in CDMA system of using intelligent antenna |
-
2011
- 2011-07-05 CN CN2011800010652A patent/CN102318205A/en active Pending
- 2011-07-05 WO PCT/CN2011/076860 patent/WO2012106866A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1602004A (en) * | 2004-10-18 | 2005-03-30 | 威盛电子股份有限公司 | Device and method for predicting channel pulse corresponding in global mobile communication system |
| JP2008154285A (en) * | 2006-04-19 | 2008-07-03 | Hitachi Kokusai Electric Inc | Symbol timing detector, and wireless terminal |
| CN101841410A (en) * | 2010-04-28 | 2010-09-22 | 华为技术有限公司 | Sampling point signal selection method and receiving end |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207961A (en) * | 2015-10-10 | 2015-12-30 | 北京中科汉天下电子技术有限公司 | Signal carrier-to-interference ratio and signal gain estimation method and circuit |
| CN105207961B (en) * | 2015-10-10 | 2018-05-22 | 北京中科汉天下电子技术有限公司 | The method of estimation and circuit of a kind of signal carrier/interface ratio and signal gain |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012106866A1 (en) | 2012-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103312637B (en) | Method and apparatus for estimating offset value, receiving apparatus, and method of processing signal in receiving apparatus | |
| TWI504184B (en) | Mobile device searching using multiple antennas | |
| CN103945447A (en) | Method for measuring downlink channel characteristic parameters, and user equipment | |
| CN1392698A (en) | Sampling phase synchronous device and two-way maximum likelihood frequency evaluation mode used thereof | |
| CN102388645A (en) | Resource distribution method and device of multiple remote radio unit common community | |
| Lottici et al. | Multiple symbol differential detection for UWB communications | |
| KR20130062979A (en) | Communication unit and pilot method for time varying channels | |
| CN107026805B (en) | The method of reseptance and device of non-orthogonal multiple access Transmission system | |
| CN102301785A (en) | Coordinated multi-point transmission/reception method, device and system | |
| CN101547036B (en) | Reference signal transmission method, equipment and system after transmitting antenna extending | |
| CN101841410B (en) | Sampling point signal selection method and receiving end | |
| CN102318205A (en) | Signal demodulation method and receiving device | |
| CN103595682A (en) | Frame synchronization method, device and receiver for OFDM | |
| WO2001006695A1 (en) | Method and apparatus for channel estimation with transmit diversity | |
| CN103875292A (en) | Collaborative scheduling method and network equipment | |
| CN103379073B (en) | uplink noise estimation method | |
| KR20210141736A (en) | Preamble Generation for Random Access in Wireless Networks | |
| CN101958856B (en) | Method and device for carrying out channel estimation by using cyclic prefix code | |
| CN109560844A (en) | A kind of multi-user's relay transmission method based on non-orthogonal multiple access technology | |
| JP4054032B2 (en) | Frame synchronization detection method | |
| CN102647376B (en) | Signal processing method and device as well as terminal | |
| CN108462977A (en) | A kind of auto gain control method and device | |
| CN104025672B (en) | Device, method, mobile station and digital storage media | |
| CN101645724A (en) | Method, device and mobile terminal for optimizing decoding performance | |
| CN105007097A (en) | Self-adaptive multipath management method of CDMA system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120111 |