CN104518842B - A kind of method of adaptive adjustment modulation coding scheme - Google Patents

A kind of method of adaptive adjustment modulation coding scheme Download PDF

Info

Publication number
CN104518842B
CN104518842B CN201310449682.XA CN201310449682A CN104518842B CN 104518842 B CN104518842 B CN 104518842B CN 201310449682 A CN201310449682 A CN 201310449682A CN 104518842 B CN104518842 B CN 104518842B
Authority
CN
China
Prior art keywords
sinr
length
eff
nack
ack
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
CN201310449682.XA
Other languages
Chinese (zh)
Other versions
CN104518842A (en
Inventor
解芳
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.)
Potevio Institute of Technology Co Ltd
Original Assignee
Potevio Institute of Technology 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 Potevio Institute of Technology Co Ltd filed Critical Potevio Institute of Technology Co Ltd
Priority to CN201310449682.XA priority Critical patent/CN104518842B/en
Publication of CN104518842A publication Critical patent/CN104518842A/en
Application granted granted Critical
Publication of CN104518842B publication Critical patent/CN104518842B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

This application discloses it is a kind of it is adaptive adjustment modulation coding scheme method, including：A, the channel quality indicator (CQI) of user equipment to report is converted to equivalent Signal to Interference plus Noise Ratio SINR by base stationeff；B, counting user equipment current feedback ACK/NACK situations and the number of continuous feedback ACK/NACK if current feedback is ACK, adjusts Signal to Interference plus Noise Ratio change step according to the number of continuous feedback ACK and raise SINR with this step-lengtheff；If current feedback is NACK, adjusts Signal to Interference plus Noise Ratio change step according to the number of continuous feedback NACK and SINR is lowered with this step-lengtheff；C, by SINReffRespectively compared with the demodulation SINR thresholdings of different MCS grades, SINR is foundeffHigher than the MCS grades alternately MCS class sets of demodulation threshold, the highest MCS grades of an efficiency of transmission is selected to distribute to the user equipment from alternative MCS class sets.Application scheme can more fast and effective track channel change, maximize terminal throughput.

Description

A kind of method of adaptive adjustment modulation coding scheme
Technical field
This application involves mobile communication technology field more particularly to a kind of methods of adaptive adjustment modulation coding scheme.
Background technology
One critically important characteristic of wireless channel is exactly to have very strong time variation, and more than ten can be reached very by declining in the short time To tens dB, adaptive modulation and coding (Adaptive Modulation and Coding, AMC) technology is aiming at channel Time variation is dynamically selected appropriate modulation and coding mode (MCS, Modulation and Coding Scheme), can be with The efficiency of transmission of communication system is made to be greatly improved.Its basic principle is exactly the characteristic of channel to data transmission in receiving terminal Estimated, and feed back to transmitting terminal, the characteristic of channel that transmitting terminal is fed back according to receiving terminal selects the corresponding MCS to carry out data Transmission improves the handling capacity and efficiency of transmission of system entirety.
In long term evolution project (LTE) system, user equipment (UE) is configured feedback week in downlink transmission Phase channel quality indicates (CQI, Channel Quality Indicator), and base station is suitble to using the CQI that UE is reported as UE selections Modulation coding scheme maximizes user throughput.
Due in CQI time variations not corresponding and actual wireless channel one by one non-with MCS grades and user's CQI information Situations such as reporting not in time influences base station and the MCS of user equipment is selected, thus also affects user throughput.
Invention content
This application provides a kind of methods of adaptive adjustment modulation coding scheme, more can quickly and effectively track channel Variation maximizes terminal throughput.
A kind of method of adaptive adjustment modulation coding scheme provided by the embodiments of the present application, including：
A, the channel quality indicator (CQI) of user equipment to report is converted to equivalent Signal to Interference plus Noise Ratio SINR by base stationeff；
B, counting user equipment current feedback ACK/NACK situations and the number of continuous feedback ACK/NACK, if currently ACK is fed back to, then adjust Signal to Interference plus Noise Ratio change step according to the number of continuous feedback ACK and SINR is raised with this step-lengtheff；Such as Fruit current feedback is NACK, then adjusts Signal to Interference plus Noise Ratio change step according to the number of continuous feedback NACK and lowered with this step-length SINReff；
C, by SINReffRespectively compared with the demodulation SINR thresholdings of different MCS grades, SINR is foundeffHigher than demodulation SINR The MCS grades of thresholding alternately MCS class sets select a highest MCS of efficiency of transmission from alternative MCS class sets Grade distributes to the user equipment.
Preferably, step A includes：
Initialize the equivalent Signal to Interference plus Noise Ratio SINR of new access user equipmenteffTo transmit the demodulation SINR threshold values using MCS SINRMCS_TH；
According to the CQI that user equipment is fed back, SINR is updated as followseff, SINReff=SINReff*(1-a)+a* SINRCQI_TH, wherein a be filtering factor, SINRCQI_THThe demodulation SINR threshold values of CQI for user equipment to report.
Preferably, if the current feedback is ACK, according to the number adjustment Signal to Interference plus Noise Ratio variation of continuous feedback ACK Step-length simultaneously raises SINR with this step-lengtheffFor：
Judge whether continuous feedback ACK numbers are more than first threshold, if so, being raised soon according to channel variation normalized set Step-length；Otherwise, step-length is raised according to channel variation normalized set slowly；Wherein, up-regulation step-length is more than slow up-regulation step-length soon；Then According to the obtained fast up-regulation step-length or slow up-regulation step-length up-regulation SINReff；
If the current feedback is NACK, Signal to Interference plus Noise Ratio change step is adjusted simultaneously according to the number of continuous feedback NACK SINR is lowered with this step-lengtheffFor：
Judge continuous feedback NACK numbers whether be more than second threshold, if so, according to channel variation normalized set it is fast under Pacing is long；Otherwise, step-length is lowered according to channel variation normalized set slowly；Wherein, step-length is lowered soon is more than slow downward step-length；So SINR is lowered according to the obtained fast downward step-length or slow step-length of lowering afterwardseff。
Step-length/fast step-length of lowering is raised according to channel variation normalized set soon include preferably, described：
Statistical channel variation statistic lvi_Mn=lvi_Mn-1* (1-b)+1*b or lvi_Mn=lvi_Mn-1*(1-b)+(- 1) * b, wherein n represent that n-th receives user feedback ACK/NACK information, lvi_M-1=0, b are filtering factor；
Up-regulation step-length is soon for setting：ΔSINR_up=max (α, α+lvi_Mn*β)dB；
Step-length is lowered in setting soon：ΔSINR_down=max (α, α+abs (lvi_Mn)*β)dB。
Step-length/slow step-length of lowering is raised according to channel variation normalized set slowly include preferably, described：
Statistical channel variation statistic lvi_Mn=lvi_Mn-1*(1-b)+0*b；It is anti-that wherein n represents that n-th receives user Present the number of ACK/NACK information, lvi_M-1=0, b are filtering factor；
Step-length is lowered in setting slowly：ΔSINR_down=max (α, abs (lvi_Mn)*β)dB；
Slowly up-regulation step-length is for setting：Wherein, bler is required by link layer Bit error rate.
Preferably, the value range of the adjustable factors α is (0,1).
Preferably, the adjustable factors β is related to the rate travel of user equipment, and the rate travel of user equipment is got over It is high then adjustable factors β values are bigger.
Preferably, the value range of the adjustable factors β is (0.5,2).
As can be seen from the above technical solutions, the CQI of user equipment to report is converted to equivalent SINR by base station；According to user The ACK/NACK information of equipment feedback adjusts equivalent SINR, with timely track channel change；Finally according to equivalent after adjustment SINR selects for MCS.Application scheme has avoided CQI and the non-one-to-one situation of MCS grades, more fast and effeciently with Track channel variation improves user equipment handling capacity.
Description of the drawings
Fig. 1 is the method flow diagram of adaptive adjustment modulation coding scheme provided by the embodiments of the present application.
Specific embodiment
A kind of method of adaptive adjustment modulation coding scheme provided by the embodiments of the present application, is used uniformly equivalent SINR tables Show channel quality, MCS is selected according to equivalent SINR.Specifically, on the one hand, base station is converted to the CQI of user equipment to report Equivalent SINR；On the other hand, failing promptly and accurately to obtain user equipment to report CQI, fed back according to user equipment ACK/NACK information adjusts equivalent SINR, with timely track channel change；Finally selected according to the equivalent SINR after adjustment for MCS It selects.
The ACK/NACK information fed back according to user equipment adjusts equivalent SINR specific steps and includes：
A, the channel quality indicator (CQI) of user equipment to report is converted to equivalent Signal to Interference plus Noise Ratio SINR by base stationeff；
B, ACK/NACK number of counting user equipment current feedback ACK/NACK situations and continuous feedback, if currently ACK is fed back to, then adjust Signal to Interference plus Noise Ratio change step according to the number of continuous feedback ACK and SINR is raised with this step-lengtheff；Such as Fruit current feedback is NACK, then adjusts Signal to Interference plus Noise Ratio change step according to the number of continuous feedback NACK and lowered with this step-length SINReff；
C, by SINReffRespectively compared with the demodulation SINR thresholdings of different MCS grades, SINR is foundeffHigher than demodulation SINR The MCS grades of thresholding alternately MCS class sets select a highest MCS of efficiency of transmission from alternative MCS class sets Grade distributes to the user equipment.
Preferably, continuous feedback ACK and NACK number are counted to judge the channel status residing for user equipment --- it is quick Variation still changes at a slow speed, if continuous feedback ACK numbers are more than first threshold or continuous feedback NACK numbers are more than second Threshold value, then channel status is quick variation, and big step-length tracking mode is used for fast change of channel scene, and slow for channel Fast scene change uses small step-length tracking mode.Application scheme has avoided CQI and the non-one-to-one situation of MCS grades, more For fast and effeciently track channel change, user equipment handling capacity is improved.
Technical principle, feature and technique effect to make technical scheme is clearer, below in conjunction with specific reality Example is applied technical scheme is described in detail.
The method flow of adaptive adjustment modulation coding scheme provided by the embodiments of the present application is as shown in Figure 1, including as follows Step：
Step 101：Initialize the equivalent Signal to Interference plus Noise Ratio SINR of new access user equipmenteffTo transmit the demodulation using MCS SINR threshold values SINRMCS_TH, i.e. SINReff=SINRMCS_TH。
Step 102：Judge user equipment whether feeds back CQI information, if yes then enter step 103, otherwise enter step 104；
Step 103：CQI is fed back according to user equipment, updates its equivalent signal-to-noise ratio SINReff。
Report the demodulation SINR threshold values SINR of CQICQI_THIt updates as follows, SINReff=SINReff*(1-a)+a* SINRCQI_TH, wherein a be filtering factor, SINRCQI_THThe demodulation SINR threshold values of CQI for user equipment to report.
Step 104：Judge user equipment whether feeding back ACK/nack message, if feedback if enter step 105, otherwise into Enter step 113；
Step 105：Judge user equipment whether feeding back ACK information, if yes then enter step 106, otherwise enter step 110；
Step 106：Count the ACK number continuously received, NACK=NACK+ 1, and N is zeroed out to continuous NACK numberNACK =0.
Step 107：Compare and continuously receive ACK number and ACK number thresholding N of maximumup_TH, then enter if greater than the value and walk Rapid 108, otherwise enter step 109；
Step 108：Judgement user is in fast state, statistical channel variation statistic lvi_Mn=lvi_Mn-1*(1-b)+ 1*b, wherein n receive user feedback ACK/NACK information, lvi_M for n-th-1=0, b are filtering factor (similarly hereinafter).Setting up-regulation SINR step deltasSINR_up=max (α, α+lvi_Mn* β) dB, cumulative SINR is carried out to equivalent SINReff=SINReff+ΔSINR_up, N is set simultaneouslyACK=Nup_TH+ 1, then perform step 113.
Wherein, α, β are adjustable factors, and the adjustable factors β is related to the rate travel of user equipment, and user equipment The more high then adjustable factors β values of rate travel it is bigger.In the embodiment of the present application, the optional value ranges of adjustable factors α For (0,1), the optional value ranges of adjustable factors β are (0.5,2).
Step 109：Judgement user is in slow state, statistical channel variation statistic lvi_Mn=lvi_Mn-1*(1-b)+ 0*b, setting up-regulation SINR step-lengths and downward SINR step-lengths, respectively ΔSINR_down=max (α, abs (lvi_Mn) * β) and(bler is the bit error rate required by link layer).If receive user equipment feedback letter It ceases and equivalent SINR, SINR is then updated for ACKeff=SINReff+ΔSINR_up, if user equipment feedback information is received as NACK more New equivalent SINR, SINReff=SINReff-ΔSINR_down.Then step 113 is performed.
Step 110：Count the NACK number continuously received, NNACK=NNACK+ 1, and N is zeroed out to continuous ACK numberACK =0.
Step 111：Compare and continuously receive NACK number and NACK number thresholding N of maximumdown_TH, if greater than the value then into Enter step 112, otherwise enter step 109；
Step 112：Judgement user is in fast state, statistical channel variation statistic lvi_Mn=lvi_Mn-1*(1-b)+ (- 1) * b (wherein lvi_M-1=0), SINR step deltas are lowered in settingSINR_down=max (α, α+abs (lvi_Mn)*β)dB.Equity Effect SINR carries out cumulative SINReff=SINReff-ΔSINR_down, while N is setNACK=Ndown_TH+1。
Step 113：According to equivalent SINReffRespectively compared with the demodulation SINR thresholdings of different MCS grades, find equivalent SINReffHigher than the MCS grades of demodulation threshold, the highest MCS grades of efficiency of transmission are selected for user equipment.
The foregoing is merely the preferred embodiment of the application, not to limit the protection domain of the application, it is all The spirit of technical scheme and any modification, equivalent substitution, improvement and etc. within principle, done, should be included in this Shen Within the scope of please protecting.

Claims (7)

  1. A kind of 1. method of adaptive adjustment modulation coding scheme, which is characterized in that including：
    A, the channel quality indicator (CQI) of user equipment to report is converted to equivalent Signal to Interference plus Noise Ratio SINR by base stationeff；
    B, ACK/NACK number of counting user equipment current feedback ACK/NACK situations and continuous feedback, if current feedback For ACK, then adjust Signal to Interference plus Noise Ratio change step according to the number of continuous feedback ACK and SINR is raised with this step-lengtheff；If work as Before be fed back to NACK, then according to the number of continuous feedback NACK adjust Signal to Interference plus Noise Ratio change step and with this step-length lower SINReff；
    C, by SINReffRespectively compared with the demodulation SINR thresholdings of different modulating and coding mode MCS grades, SINR is foundeffIt is high In the MCS grades alternately MCS class sets of demodulation SINR thresholdings, a transmission effect is selected from alternative MCS class sets The highest MCS grades of rate distribute to the user equipment；
    Step A includes：
    Initialize the equivalent Signal to Interference plus Noise Ratio SINR of new access user equipmenteffTo transmit the demodulation SINR threshold values using MCS SINRMCS_TH；
    According to the CQI that user equipment is fed back, SINR is updated as followseff, SINReff=SINReff*(1-a)+a* SINRCQI_TH, wherein a be filtering factor, SINRCQI_THThe demodulation SINR threshold values of CQI for user equipment to report.
  2. 2. according to the method described in claim 1, it is characterized in that, if the current feedback is ACK, according to continuous feedback The number adjustment Signal to Interference plus Noise Ratio change step of ACK simultaneously raises SINR with this step-lengtheffFor：
    Judge whether continuous feedback ACK numbers are more than first threshold, if so, according to the upper pacing soon of channel variation normalized set It is long；Otherwise, step-length is raised according to channel variation normalized set slowly；Wherein, up-regulation step-length is more than slow up-regulation step-length soon；Then root According to the obtained fast up-regulation step-length or slow up-regulation step-length up-regulation SINReff；
    If the current feedback is NACK, Signal to Interference plus Noise Ratio change step is adjusted and with this according to the number of continuous feedback NACK Step-length lowers SINReffFor：
    Judge whether continuous feedback NACK numbers are more than second threshold, if so, descending pacing soon according to channel variation normalized set It is long；Otherwise, step-length is lowered according to channel variation normalized set slowly；Wherein, step-length is lowered soon is more than slow downward step-length；Then root SINR is lowered according to the obtained fast downward step-length or slow step-length of loweringeff。
  3. 3. according to the method described in claim 2, it is characterized in that, described raise step-length soon according to channel variation normalized set Including：
    Statistical channel variation statistic lvi_Mn=lvi_Mn-1* (1-b)+1*b, wherein n represent that n-th receives user feedback ACK/ Nack message, lvi_M-1=0, b are filtering factor；
    Up-regulation step-length is soon for setting：ΔSINR_up=max (α, α+lvi_Mn*β)dB；
    α, β are adjustable factors；
    It is described step-length is lowered according to channel variation normalized set soon to include：
    Statistical channel variation statistic lvi_Mn=lvi_Mn-1* (1-b)+(- 1) * b, wherein n represent that n-th receives user feedback ACK/NACK information, lvi_M-1=0, b are filtering factor；
    Step-length is lowered in setting soon：ΔSINR_down=max (α, α+abs (lvi_Mn)*β)dB；
    α, β are adjustable factors.
  4. It is 4. according to the method described in claim 2, it is characterized in that, described according to the upper pacing slowly of channel variation normalized set Long/slow downward step-length includes：
    Statistical channel variation statistic lvi_Mn=lvi_Mn-1*(1-b)+0*b；Wherein n represents that n-th receives user feedback ACK/ Nack message, lvi_M-1=0, b are filtering factor；
    Step-length is lowered in setting slowly：ΔSINR_down=max (α, abs (lvi_Mn)*β)dB；
    Slowly up-regulation step-length is for setting：Wherein, bler is the errored bit required by link layer Rate.
  5. 5. method according to claim 3 or 4, which is characterized in that the value range of the adjustable factors α is (0,1).
  6. 6. method according to claim 3 or 4, which is characterized in that the rate travel of the adjustable factors β and user equipment Correlation, and the more high then adjustable factors β values of the rate travel of user equipment are bigger.
  7. 7. according to the method described in claim 6, it is characterized in that, the value range of the adjustable factors β is (0.5,2).
CN201310449682.XA 2013-09-27 2013-09-27 A kind of method of adaptive adjustment modulation coding scheme Expired - Fee Related CN104518842B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310449682.XA CN104518842B (en) 2013-09-27 2013-09-27 A kind of method of adaptive adjustment modulation coding scheme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310449682.XA CN104518842B (en) 2013-09-27 2013-09-27 A kind of method of adaptive adjustment modulation coding scheme

Publications (2)

Publication Number Publication Date
CN104518842A CN104518842A (en) 2015-04-15
CN104518842B true CN104518842B (en) 2018-06-22

Family

ID=52793637

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310449682.XA Expired - Fee Related CN104518842B (en) 2013-09-27 2013-09-27 A kind of method of adaptive adjustment modulation coding scheme

Country Status (1)

Country Link
CN (1) CN104518842B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107634816B (en) * 2016-07-18 2021-05-11 深圳市中兴微电子技术有限公司 Unmanned aerial vehicle image transmission method, device and system based on long term evolution
CN107801236B (en) * 2016-09-06 2022-02-08 联发科技股份有限公司 Data transmission method and device
CN107332645B (en) * 2017-06-29 2020-03-27 湖南基石通信技术有限公司 Wireless communication equipment rate modulation method and device based on self-adaptive learning mechanism
CN111082892A (en) * 2018-10-19 2020-04-28 普天信息技术有限公司 Method and device for correcting SINR
CN111277369A (en) * 2020-01-20 2020-06-12 大连市共进科技有限公司 Downlink scheduling strategy adjusting method, device and server
CN112640343A (en) * 2020-04-27 2021-04-09 深圳市大疆创新科技有限公司 MCS (modulation and coding scheme) adjusting method and device for sending end, unmanned aerial vehicle and storage medium
CN112600648B (en) * 2020-12-11 2021-12-14 深圳金信诺高新技术股份有限公司 Downlink adaptive modulation and coding method and system based on 5G standard NR
CN115242348A (en) * 2021-04-23 2022-10-25 富华科精密工业（深圳）有限公司 Adaptive link modulation coding method, system and base station
CN113922925B (en) * 2021-10-09 2023-05-12 中国联合网络通信集团有限公司 Data transmission modulation class processing method, base station and storage medium
CN114222328A (en) * 2021-12-30 2022-03-22 赛特斯信息科技股份有限公司 Wireless link self-adaption method
CN114978422B (en) * 2022-05-06 2024-03-19 Oppo广东移动通信有限公司 Channel quality indication CQI adjustment method, electronic device and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101132227A (en) * 2006-08-23 2008-02-27 大唐移动通信设备有限公司 Monitoring method and system for wireless communication signal channel quality
CN101711058A (en) * 2009-12-15 2010-05-19 中兴通讯股份有限公司 Resource allocation method and resource allocation system
CN102340385A (en) * 2010-07-19 2012-02-01 中兴通讯股份有限公司 Hybrid automatic repeat request (HARQ) processing method and apparatus thereof
CN102611666A (en) * 2011-01-25 2012-07-25 中国移动通信集团公司 Outer loop link adaptive implementation method and device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101132227A (en) * 2006-08-23 2008-02-27 大唐移动通信设备有限公司 Monitoring method and system for wireless communication signal channel quality
CN101711058A (en) * 2009-12-15 2010-05-19 中兴通讯股份有限公司 Resource allocation method and resource allocation system
CN102340385A (en) * 2010-07-19 2012-02-01 中兴通讯股份有限公司 Hybrid automatic repeat request (HARQ) processing method and apparatus thereof
CN102611666A (en) * 2011-01-25 2012-07-25 中国移动通信集团公司 Outer loop link adaptive implementation method and device

Also Published As

Publication number Publication date
CN104518842A (en) 2015-04-15

Similar Documents

Publication Publication Date Title
CN104518842B (en) A kind of method of adaptive adjustment modulation coding scheme
EP2020110B1 (en) Generation, deployment and use of tailored channel quality indicator tables
EP2996413B1 (en) Methods for power headroom reporting, resource allocation, and power control
EP2501189B1 (en) Base station for implementing inter-cell interference coordination and method for inter-cell interference coordination
CN1192647C (en) Self-adapting method for mobile communication transmitting signals
US20070141995A1 (en) Method for controlling interference in a wireless mobile communication system
KR20200013041A (en) Channel quality feedback method and apparatus
CN103457691B (en) Down self-adapting modulation coding method
CN101621829B (en) Method and device for reporting channel quality indicator
CN111726181B (en) Method and device for acquiring channel state information
EP2887572B1 (en) Open-loop link adaption adjusting method and device
CN102892186B (en) Method and device for determining physical downlink control channel resource
CN101127540B (en) A power control method and device
CN104734812A (en) Method for confirming modulation scheme and facility
CN101674654A (en) PDCCH channel encoding rate regulation method and evolution base station
CN103166746B (en) A kind of high energy efficiency chain circuit self-adaptive method for long term evolution downlink
CN103581959B (en) It is a kind of to improve the method, apparatus and system of cell downlink covering
CN102118870B (en) Method and device for dispatching terminal
CN102246567B (en) Method, apparatus and radio network controller for outer loop power control processing
CN102368868B (en) Method for optimizing physical uplink control channel power control
CN105024785B (en) Determine the method and system of downlink MCS
WO2017107495A1 (en) Schedule processing method and device
CN104426628A (en) Threshold adjusting method and system of modulation coding mode
CN103905173B (en) Method and device for PDCCH self-adaptive transmission based on DTX and SINR
CN101388700B (en) Method and apparatus for adaptively selecting compression mode of channel quality indication information

Legal Events

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

Granted publication date: 20180622

Termination date: 20210927