CN101483508B - Flow control method and system for data transmission in acknowledgement mode - Google Patents
Flow control method and system for data transmission in acknowledgement mode Download PDFInfo
- Publication number
- CN101483508B CN101483508B CN2008100558737A CN200810055873A CN101483508B CN 101483508 B CN101483508 B CN 101483508B CN 2008100558737 A CN2008100558737 A CN 2008100558737A CN 200810055873 A CN200810055873 A CN 200810055873A CN 101483508 B CN101483508 B CN 101483508B
- Authority
- CN
- China
- Prior art keywords
- module
- upthres
- dnthres
- numdn
- numup
- 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.)
- Active
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention discloses a flow control method of data transmission with a confirmed mode. An up storing threshold Upthres and a down storing threshold Dnthres are set in the invention. When the storing space taken by the back module is larger than Upthres, the back module enters a suspension state. The back module returns to the normal state along with the receiving of confirmation information from the network side by the back module and causing the taken storing space is smaller than Dnthres. In the invention, the back module dynamically adjusts the Upthres and Dnthres according to the time number of entering into the suspension state and the time number of entering the normal state of the back module. Furthermore the back module dynamically adjusts the Upthres and Dnthres according to the time from entering into the suspension state to returning to the normal state of the back module. The invention also discloses a flow control system of data transmission. The method and the system according to the invention can save system resource and increase the data transmission efficiency.
Description
Technical field
The present invention relates to flow control technique, be specifically related to a kind of flow control methods and system of affirmation mode data transmission.
Background technology
In GSM, terminals such as mobile phone are to be made up of a plurality of characteristics different module, in order to realize the transfer of data of terminals such as mobile phone and network side, need use the front-end module and the rear module at terminal.Specifically; When confirming the transfer of data of mode; At first by front-end module to the back-end module submit the packet that will send, rear module is preserved packet and to network side transfer data packets, after the successful transfer data packets; Rear module can be received the affirmation from the network side, and then according to confirming the related data packets deletion of preserving.Concerning the portable terminal of the second generation (2G) GSM; Front-end module is an application layer; Rear module is subnet convergence protocol layer (SNDCP) and logical link control layer (LLC); And concerning the portable terminal of the third generation (3G) GSM, front-end module is an application layer, and rear module is packet data convergence protocol layer (PDCP).
Carry out upstream data with the 2G system and mobile terminal and be transmitted as example, it is as shown in Figure 1 that the upstream data of 2G system and mobile terminal transmits flow process, after SNDCP receives the data from other layers; Elder generation's judgment data type if SNDCP receives is the packet from application layer, is then preserved packet; And under the situation that LLC and network side link have been set up, send packet and give LLC, by LLC packet is uploaded network side again; And under LLC and the still unfounded situation of network side link, retention data bag then; If what SNDCP received is the affirmation information from LLC, then according to confirmation deletion related data packets; If what SNDCP received is LLC and network side link re-establishment success message, then retransmit the packet of not receiving affirmation and give LLC, by LLC packet is uploaded network side again; If what SNDCP received is other message, then system carries out error handling processing.Here; If the packet that SNDCP preserved is not received confirmation in a period of time of setting; Then think LLC and network side link failure, by network side initiation request and LLC link re-establishment, after the link setup success; SNDCP sends the packet of not receiving confirmation to LLC again, so that once more with the data upload network side.
But; Application layer is not changeless to the frequency of SNDCP transfer data packets; And the memory space that packet takies is also equal not to the utmost, if application layer transfer data packets frequency is too high or packet to take memory space excessive, be easy to cause the SNDCP memory space to exhaust because of the mass data bag is deposited in the SNDCP wait acknowledge; So, need guarantee that the memory space of SNDCP is unlikely to account for too greatly through flow control.
Fig. 2 is a prior art flow control methods flow chart; As shown in Figure 2, the basic thought of prior art flow control is: according to the situation of hardware resource and software resource storage cap (Upthres) and storage lower limit (Dnthres) are set, when the occupied memory space of SNDCP during greater than Upthres; SNDCP sends a hang-up (Suspend) message to application layer; Get into suspended state, application layer is suspended to SNDCP transmission packet after receiving Suspend message, discharges memory space along with SNDCP receives the affirmation information from LLC; When making occupied memory space less than Dnthres; SNDCP sends recoverys (Resume) message to application layer again, and recovery normal condition, application layer receive that Resume message continued sends packet to SNDCP.
Though; Existing flow control methods; Can solve the problem that memory space is prone to exhaust to a certain extent, but the selection of Upthres and Dnthres is difficult, too high if Upthres is provided with; Then memory space need take the SNDCP more resources, can waste not rich in natural resources of SNDCP itself like this; If Upthres was provided with low, can make SNDCP when normal condition, frequently reach Upthres again, thereby can sending Suspend message continually, SNDCP gives application layer, waste system resource; If Dnthres is provided with too high, can make SNDCP when keeping suspended state, frequently reach Dnthres, waste system resource; And the Dnthres setting is too low, can make SNDCP keep the time of suspended state oversize, influences data transmission efficiency.And a pair of fixing Upthres and Dnthres can't adapt to all situations in the data transmission procedure, very flexible.
Summary of the invention
In view of this, flow control methods and system that main purpose of the present invention is to provide a kind of affirmation mode data transmission can adjust Upthres and Dnthres flexibly, thereby conserve system resources improves data transmission efficiency.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of flow control methods of affirmation mode data transmission, comprising: storage cap Upthres and storage lower limit Dnthres that the front-end module packet takies the rear module memory space are set; This method also comprises: in data transmission procedure, get into the times N umup and the times N umdn that recovers normal condition of suspended state according to rear module, dynamically adjust Upthres or Dnthres, change storage size.
This method further comprises: the threshold value of absolute value that the difference of Upthres and Dnthres is set; Said according to Numup with Numdn dynamically adjusts Upthres or Dnthres is: as Numup and Numdn initial value to be set to equate, if, then increase Upthres because Numup increases the absolute value of the difference that makes Numup and Numdn greater than threshold value; If, then reduce Dnthres because Numdn increases the absolute value of the difference that makes Numup and Numdn greater than threshold value.
In the such scheme, this method further comprises: at every turn according to behind Numup and Numdn adjustment Upthres or the Dnthres, with Numup and Numdn zero clearing.
In the such scheme, this method further comprises timer is set, when rear module gets into suspended state at every turn; Timer picks up counting, if timer then, rear module is not also recovered normal condition; Then adjust Upthres and/or Dnthres, reduce the poor of Upthres and Dnthres; If rear module has been recovered normal condition, timer is not also not then then adjusted Upthres and/or Dnthres, increases the poor of Upthres and Dnthres.
Wherein, said adjustment Upthres and/or Dnthres, the difference that reduces Upthres and Dnthres is: reduce Upthres and/or increase Dnthres; Said adjustment Upthres and/or Dnthres, the difference that increases Upthres and Dnthres is: increase Upthres and/or reduce Dnthres.
This method further comprises: at every turn according to behind timer adjustment Upthres and/or the Dnthres, with the timer zero clearing.
This method further comprises: the Upthres maximum is set; Upthres no longer increases after reaching maximum.
The present invention also provides a kind of flow control system of transfer of data; Front-end module and rear module that this system comprises network side and is positioned at end side; Wherein, front-end module is sent to rear module with packet, and rear module is preserved the packet that front-end module transmits; And packet is sent to network side, the storage of the affirmation information adjustment packet that returns according to network side; Key is that said rear module further comprises storage bound adjusting module, counting module, message transmission module, judge module and control module,
Wherein, counting module is used to write down the times N umup of rear module entering suspended state and the times N umdn that recovers normal condition; Judge module is used to judge that whether the absolute value of difference of Numup and Numdn is greater than threshold value; Message transmission module is used for the forward end module sends message on hold or recovers message, and to counting module and storage bound adjusting module the state of rear module is provided; Storage bound adjusting module is used for rear module state adjustment Upthres and the Dnthres that judged result and message transmission module according to judge module provide; Control module is used for behind the judged result adjustment Upthres and Dnthres of storage bound adjusting module according to judge module, with Numup and Numdn zero clearing.
Wherein, said rear module further comprises time block, is used for when rear module gets into suspended state, picking up counting; The rear module state that said storage bound adjusting module is further used for providing according to message transmission module and the timing situation of time block adjustment Upthres and Dnthres; Said message transmission module is further used for providing to time block the state of rear module; Said control module is further used for behind the timing situation adjustment Upthres and Dnthres of storage bound adjusting module according to time block, with counter O reset.
The flow control methods and the system of affirmation mode data transmission of the present invention; In data transmission procedure; Get into the number of times and the number of times that recovers normal condition of suspended state according to rear module, dynamically adjust Upthres or Dnthres, thus conserve system resources, the data transmission efficiency that improves.
Further, the present invention can also be according to rear module from suspended state to recovering dynamically adjustment Upthres and/or Dnthres of time that normal condition experienced, thereby flexible allocation system resource, effectively utilize system resource.
Description of drawings
Fig. 1 is that the upstream data of 2G system and mobile terminal transmits flow chart;
Fig. 2 is a prior art flow control methods flow chart;
Fig. 3 is the flow control methods flow chart of transfer of data of the present invention;
Fig. 4 is a data transmission stream amount control system structure chart of the present invention.
Embodiment
Basic thought of the present invention is: the initial value of Upthres and Dnthres rule of thumb is set, in data transmission procedure, gets into the number of times and the number of times that recovers normal condition of suspended state according to rear module, dynamically adjust Upthres or Dnthres.
Further, the present invention can also dynamically adjust Upthres and/or Dnthres from suspended state to recovering the time that normal condition experienced according to rear module.
Carrying out transmitting uplink data with the 2G system and mobile terminal below is example, in conjunction with accompanying drawing the present invention is done further explain.
The present invention gets into suspended state according to SNDCP times N umup dynamically adjusts Upthres or Dnthres with the times N umdn that recovers normal condition, and Numup and Numdn initial value equate.
Among the present invention, Numup and Numdn initial value get 0, if owing to the increase of Numup makes | Numup-Numdn|＞n, explain that then Upthres is less than normal, reach easily, need to increase Upthres; If because the increase of Numdn makes | Numup-Numdn|＞n, explain that then Numdn is bigger than normal, reach easily, need reduce Dnthres.Here, n is a natural number, and its size is given according to actual needs, gets n=1 in the present embodiment.In addition, at every turn according to behind Numup and Numdn adjustment Upthres or the Dnthres, need be to Numup and Numdn zero clearing.
In order to prevent that Upthres from becoming excessive, a maximum can be set control, in case reach maximum, even if actual transmissions need increase Upthres, Upthres also remains unchanged.
And; Because what need dynamically adjustment is Upthres and these two thresholdings of Dnthres, (Upthres-Dnthres) i.e. reflection be SNDCP from getting into suspended state to recovering the memory space that normal condition need discharge, the present invention is provided with a timer T1 and weighs SNDCP from getting into suspended state to the recovery needed time of normal condition; T1 picked up counting when SNDCP got into suspended state; If SNDCP does not also recover normal condition, T1 just then explains that then (Upthres-Dnthres) is too big; Be that distance is oversize between Upthres and the Dnthres, need be through reducing Upthres and/or increase Dnthres to reduce (Upthres-Dnthres).
If SNDCP has recovered normal condition, T1 does not also not then explain that then (Upthres-Dnthres) is too little, and promptly distance is too short between Upthres and the Dnthres, need increase (Upthres-Dnthres) through increasing Upthres and/or reducing Dnthres.Here, the timing of T1 is according to the practical experience setting.In addition, at every turn according to behind T1 adjustment Upthres and/or the Dnthres, need be to the T1 zero clearing.
Fig. 3 is the flow control methods flow chart of transfer of data of the present invention, and as shown in Figure 3, the flow control methods of transfer of data of the present invention may further comprise the steps:
After step 301～step 308:SNDCP receives the data from other layers, carry out data type and judge, if the data that receive are then preserved packet for the packet from application layer, and execution in step 309; If the data that receive are the affirmation information from the LLC layer, the then SNDCP related data packets that deletion is stored according to confirmation, and execution in step 315; If the data that receive are the link re-establishment successful information from LLC, then SNDCP resends the packet of not receiving confirmation and gives LLC, by LLC packet is uploaded network side again; If the data of receiving are not above-mentioned three kinds of data, system carries out error handling processing.
Step 309～step 310: judge whether SNDCP is in normal condition, if, then packet is sent to LLC, by LLC packet is uploaded network side again after, execution in step 311; Otherwise, return step 301.
Step 311～step 312: judge whether the occupied storage space S of SNDCP surpasses Upthres, if then SNDCP sends Suspend message to application layer; Get into suspended state; Simultaneously, adjustment gets into suspended state times N umup=Numup+1, execution in step 313; Otherwise, return step 301.
Step 313～step 314: whether the absolute value of the hang-up number of times of judging SNDCP and the difference of recovering number of times greater than predetermined value, if, Upthres is increased a unit, and with Numup and Numdn zero clearing, and behind the startup timer T1, return step 301; Otherwise, directly return step 301.Here, each unit comprises certain byte number, and the byte number that a concrete unit comprises is set according to actual needs.
Step 315: judge whether SNDCP is in suspended state, if, execution in step 316; Otherwise return step 301.
Step 316～step 317: whether judge the occupied storage space S of SNDCP less than Dnthres, if then SNDCP sends to application layer and recovers message, get into normal condition, and adjustment recovers normal condition times N umdn=Numdn+1, execution in step 318; Otherwise, execution in step 322;
Step 318～step 319: whether the absolute value of the hang-up number of times of judging SNDCP and the difference of recovering number of times greater than predetermined value, if, Dnthres is reduced a unit, and with after Numup and the Numdn zero clearing, execution in step 320; Otherwise return step 301.
Step 320～step 321: whether judge timer T1 just in timing, if adjustment Upthres and Dnthres make both differences increase a unit, and with returning step 301 after the T1 zero clearing; Otherwise, directly return step 301.
Step 322～step 323: whether then to judge timer T1, if adjustment Upthres and Dnthres make both differences reduce a unit, and with returning step 301 after the T1 zero clearing; Otherwise, directly return step 301.
Give an example; If Upthres=30kbytes; Dnthres=4500bytes; Application layer is 1Mbytes/s to the maximum rate that SNDCP sends packet, and application layer is 20kbytes/s to the minimum-rate that SNDCP sends packet, and SNDCP is 10kbytes/s according to the speed that confirmation discharges memory space.
When adopting prior art data transmission stream amount control method; Upthres=30kbytes and Dnthres=4500bytes immobilize; Send file in application layer with maximum rate like this and give in the process of SNDCP, if transmit words smoothly, because 30000bytes/ (1000000 bytes/s-10000bytes/s)=0.03s; The data of the every transmission of the application layer of on average getting off 30ms, SNDCP will send Suspend message one time to application layer; Give in the process of SNDCP and send file with minimum-rate in application layer; If transmission is words smoothly, since 30000bytes/ (20000bytes/s-10000bytes/s)=3s, the data of the every transmission of the application layer of on average getting off 3s; SNDCP just can send Suspend message one time to application layer; In fact the DeGrain that makes flow control, and SNDCP has kept sizable memory space, waste system resource.
If adopt method provided by the present invention; Sending file in application layer with maximum rate gives in the process of SNDCP; Upthres can surpass 30kbytes in the scope that system allows, for example be changed to about 150kbytes, has reduced the frequency of pass-along message between application and the SNDCP effectively; Give in the process of SNDCP and send file with minimum-rate in application layer; Upthres can be lower than 30kbytes; For example be changed to about 7.5kbytes, make the memory space that is used for transfer of data reduce again, thereby can have more memory space to be used for other purpose.
Fig. 4 is a data transmission stream amount control system structure chart of the present invention, and is as shown in Figure 4, front-end module and rear module that the flow control system of transfer of data of the present invention comprises network side and is positioned at end side, wherein,
Front-end module is used for packet is sent to rear module;
Rear module is used to preserve the packet that front-end module transmits; Packet is sent to network side; And the affirmation information deletion that returns according to the network side related data packets of preserving, and send packet or stop to send packet according to the memory space control front-end module that the Upthres, Dnthres and the packet that are provided with take;
Network side is used to receive data, and module is sent confirmation to the back-end,
Wherein, said rear module further comprises storage bound adjusting module, counting module, message transmission module, judge module and control module, wherein,
Counting module is used to write down rear module and gets into the times N umup of suspended state and the times N umdn that recovers normal condition;
Judge module is used to judge that whether the absolute value of difference of Numup and Numdn is greater than threshold value;
Message transmission module is used for the forward end module sends message on hold or recovers message, and to counting module and storage bound adjusting module the state of rear module is provided;
Storage bound adjusting module is used for rear module state adjustment Upthres and the Dnthres that judged result and message transmission module according to judge module provide;
Control module is used for behind the judged result adjustment Upthres and Dnthres of storage bound adjusting module according to judge module, with Numup and Numdn zero clearing.
Said rear module can further include time block, is used for when rear module gets into suspended state, picking up counting;
The rear module state that said storage bound adjusting module can also be further used for providing according to message transmission module and the timing situation of time block adjustment Upthres and Dnthres;
Said message transmission module can also be further used for providing to time block the state of rear module;
Said control module can also be further used for behind the timing situation adjustment Upthres and Dnthres of storage bound adjusting module according to time block, with counter O reset.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (8)
1. the flow control methods of affirmation mode data transmission comprises: storage cap Upthres and storage lower limit Dnthres that the front-end module packet takies the rear module memory space are set, the threshold value of absolute value of the difference of Upthres and Dnthres is set; It is characterized in that; This method also comprises: in data transmission procedure, get into the times N umup and the times N umdn that recovers normal condition of suspended state according to rear module, dynamically adjust Upthres or Dnthres; Change storage size; Wherein said according to Numup with Numdn dynamically adjusts Upthres or Dnthres is: as Numup and Numdn initial value to be set to equate, if, then increase Upthres because Numup increases the absolute value of the difference that makes Numup and Numdn greater than threshold value; If, then reduce Dnthres because Numdn increases the absolute value of the difference that makes Numup and Numdn greater than threshold value.
2. method according to claim 1 is characterized in that, this method further comprises: at every turn according to behind Numup and Numdn adjustment Upthres or the Dnthres, with Numup and Numdn zero clearing.
3. method according to claim 1 is characterized in that, this method further comprises timer is set; When rear module gets into suspended state at every turn; Timer picks up counting, if timer then, rear module is not also recovered normal condition; Then adjust Upthres and/or Dnthres, reduce the poor of Upthres and Dnthres; If rear module has been recovered normal condition, timer is not also not then then adjusted Upthres and/or Dnthres, increases the poor of Upthres and Dnthres.
4. method according to claim 3 is characterized in that, said adjustment Upthres and/or Dnthres, and the difference that reduces Upthres and Dnthres is: reduce Upthres and/or increase Dnthres;
Said adjustment Upthres and/or Dnthres, the difference that increases Upthres and Dnthres is: increase Upthres and/or reduce Dnthres.
5. method according to claim 3 is characterized in that, this method further comprises: at every turn according to behind timer adjustment Upthres and/or the Dnthres, with the timer zero clearing.
6. according to claim 1 or 4 described methods, it is characterized in that this method further comprises: the Upthres maximum is set; Upthres no longer increases after reaching maximum.
7. the flow control system of a transfer of data; Front-end module and rear module that this system comprises network side and is positioned at end side; Wherein, front-end module is sent to rear module with packet, and rear module is preserved the packet that front-end module transmits; And packet is sent to network side, the storage of the affirmation information adjustment packet that returns according to network side;
It is characterized in that said rear module further comprises storage bound adjusting module, counting module, message transmission module, judge module and control module, wherein,
Counting module is used to write down rear module and gets into the times N umup of suspended state and the times N umdn that recovers normal condition;
Judge module is used to judge that whether the absolute value of difference of Numup and Numdn is greater than threshold value;
Message transmission module is used for the forward end module sends message on hold or recovers message, and to counting module and storage bound adjusting module the state of rear module is provided;
Storage bound adjusting module is used for rear module state adjustment Upthres and the Dnthres that judged result and message transmission module according to judge module provide;
Control module is used for behind the judged result adjustment Upthres and Dnthres of storage bound adjusting module according to judge module, with Numup and Numdn zero clearing.
8. control system according to claim 7 is characterized in that said rear module further comprises time block, is used for when rear module gets into suspended state, picking up counting;
The rear module state that said storage bound adjusting module is further used for providing according to message transmission module and the timing situation of time block adjustment Upthres and Dnthres;
Said message transmission module is further used for providing to time block the state of rear module;
Said control module is further used for behind the timing situation adjustment Upthres and Dnthres of storage bound adjusting module according to time block, with counter O reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100558737A CN101483508B (en) | 2008-01-10 | 2008-01-10 | Flow control method and system for data transmission in acknowledgement mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100558737A CN101483508B (en) | 2008-01-10 | 2008-01-10 | Flow control method and system for data transmission in acknowledgement mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101483508A CN101483508A (en) | 2009-07-15 |
| CN101483508B true CN101483508B (en) | 2012-04-18 |
Family
ID=40880455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100558737A Active CN101483508B (en) | 2008-01-10 | 2008-01-10 | Flow control method and system for data transmission in acknowledgement mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101483508B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1972284A (en) * | 2005-11-24 | 2007-05-30 | 大唐移动通信设备有限公司 | Control method of wireless link layer flow |
-
2008
- 2008-01-10 CN CN2008100558737A patent/CN101483508B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1972284A (en) * | 2005-11-24 | 2007-05-30 | 大唐移动通信设备有限公司 | Control method of wireless link layer flow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101483508A (en) | 2009-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8817806B2 (en) | Method and apparatus for flow control between RLC and PDCP in a communication | |
| CN103036904B (en) | A kind of udp protocol that uses in a communication network carries out the method for reliable data transmission | |
| CN102006283B (en) | Data transmission method and device | |
| CA2674655C (en) | Improved data transfer method, system and protocol | |
| CN101877604B (en) | Method and system for transmitting files | |
| CN101924620B (en) | Message retransmission method and device | |
| CN102148662B (en) | Adjusting method and device for data transmitting speed | |
| WO2013053304A1 (en) | Method and device for implementing tcp transmission | |
| CN100461770C (en) | Data processing method for the packet service transfer link of the wireless communication system of the terminal | |
| CN101179393A (en) | Method and system for implementing document breakpoint transmission | |
| CN102007812A (en) | Method and arrangement for tcp flow control | |
| US9825863B2 (en) | Buffer control for multi-transport architectures | |
| CN101594308B (en) | Method and system for transmitting message | |
| CN104093170A (en) | TCP-based data transmission method and TCP agent apparatus | |
| CN103141050B (en) | Data packet retransmission method and node in quick path interconnect system | |
| CN101212401B (en) | Grid-oriented configurable data transmission method and system | |
| CN103945282A (en) | File reading method and device | |
| CN100574274C (en) | The transmission system of radio link protocol and method | |
| CN101854735A (en) | Method for processing data of RLC layer and PDCP layer when RRC connection is released under LTE system | |
| CN101483508B (en) | Flow control method and system for data transmission in acknowledgement mode | |
| CN102457986A (en) | Method for transmitting uplink data of terminal, and terminal | |
| CN102201901A (en) | Data retransmission method and device | |
| CN101702813B (en) | Memory operating managing method and memory operating managing device | |
| CN106302426A (en) | A kind of udp protocol stack implementation method of band retransmission mechanism based on FPGA | |
| JP5405870B2 (en) | Communication equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: DATANG MOBILE COMMUNICATION EQUIPMENT CO., LTD. DATANG MOBILE COMMUNICATION EQUIPMENTCO., LTD., SHANGHAI Effective date: 20120217 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120217 Address after: 201206 Pudong New Area Mingyue Road, Shanghai, No. 1258 Applicant after: Leadcore Technology Co., Ltd. Address before: 201206 Pudong New Area Mingyue Road, Shanghai, No. 1258 Applicant before: Leadcore Technology Co., Ltd. Co-applicant before: Datang Mobile Communication Equipment Co., Ltd. Co-applicant before: Datang Mobile Communication Equipment Co., Ltd., Shanghai |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |