CN103095446A - Switch-over method of multimode clock and corresponding multimode clock - Google Patents
Switch-over method of multimode clock and corresponding multimode clock Download PDFInfo
- Publication number
- CN103095446A CN103095446A CN 201110334696 CN201110334696A CN103095446A CN 103095446 A CN103095446 A CN 103095446A CN 201110334696 CN201110334696 CN 201110334696 CN 201110334696 A CN201110334696 A CN 201110334696A CN 103095446 A CN103095446 A CN 103095446A
- Authority
- CN
- China
- Prior art keywords
- clock
- gps
- mode
- time
- pattern
- 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.)
- Granted
Links
Images
Landscapes
- Synchronisation In Digital Transmission Systems (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a switch-over method of a multimode clock. Multiple modes comprise a global position system (GPS) clock mode and a 1588 clock mode which is based on a 1588 protocol. The method includes the steps: respectively receiving time information from a GPS time server and a 1588 time server; in a GPS clock mode, executing frequency synchronization and phase position synchronization with the GPS time server based on the time information from the GPS time server; generating a synchronization time signal; in a 1588 clock mode, starting a 1588 protocol stack; detecting whether the frequency synchronization in the GPS clock mode is completed; if detecting completion of the frequency synchronization in the GPS clock mode, executing the phase position synchronization with the 1599 time server based on the time information from the 1588 time server; monitoring whether the GPS clock mode breaks down; and when the GPS clock mode breaks down, switching over to the 1588 clock mode. The switch-over method can reduce mode switch-over time of the multimode clock, and achieve quick and smooth mode switch-over. The invention further discloses the corresponding multimode clock.
Description
Technical field
The present invention relates to comprise the gps clock pattern and based on the handoff technique of the multi-mode clock of 1588 clock modules of 1588 agreements, particularly, relate to changing method and the corresponding multi-mode clock that switches to 1588 clock modules in multi-mode clock from the gps clock pattern.
Background technology
In communication network, time synchronized is one of important technology of realizing the transmission such as voice, data.Along with the conversion of communication network from circuit-switched technology to packet-switch technology, for the also raising gradually of requirement of time synchronized.
The full name of IEEE 1588 standards is " the precision interval clock synchronous protocol standard of network measure and control system (IEEE1588 Precision Clock Synchronization Protocol) " (hereinafter referred to as " 1588 agreement "), it is the standard of the Timing Synchronization ability of general lifting network system, can make distributed communication network have strict Timing Synchronization.Basic conception is by hardware and software, the internal clock of the network equipment (client computer) to be realized synchronizeing with the master clock of main control computer (server).
Usually, the internal clock of the network equipment can adopt the multi-mode redundancy structure with master/backup clock.If active clock breaks down, switch to standby clock and carry out work.(for example adopt circuit clock for existing active clock, gps clock) and standby clock adopts the multi-mode clock based on 1588 clocks of 1588 agreements, when switching from gps clock to 1588 clocks, 1588 clocks are transformed into from forbidding (Disable) state (Enable) state of enabling, namely 1588 clocks are activated, and carry out and the synchronizeing of master clock, generate synchronizing clock signals.
Yet, in this technical scheme, just begin when switching due to 1588 clocks to start, therefore, needed to spend certain hour and carry out synchronously waiting operation before generating synchronizing clock signals, thereby cause taking a long time to be transformed into 1588 clocks from circuit clock, this will destroy the accuracy of the internal clock of the network equipment, and affect the transmission of voice or data.
Summary of the invention
The present invention proposes in view of above-mentioned technical problem just, and purpose is to provide a kind of changing method and corresponding multi-mode clock of multi-mode clock, and it can fast and carry out the switching of clock module smoothly, strengthens the stability of multi-mode clock.
According to an aspect of the present invention, a kind of changing method of multi-mode clock is provided, wherein, described multi-mode comprises that described method comprises: receive respectively the temporal information from gps time server and 1588 time servers as the gps clock pattern of active clock with as 1588 clock modules based on 1588 agreements of standby clock; Under described gps clock pattern: based on the temporal information from described gps time server, carry out Frequency Synchronization and Phase synchronization with described gps time server; Generate synchronizing clock signals; Under described 1588 clock modules: start 1588 protocol stacks; Whether the described Frequency Synchronization that detects under described gps clock pattern is completed; Complete if detect as the described Frequency Synchronization under described gps clock pattern, based on the temporal information from described 1588 time servers, carry out the Phase synchronization with described 1588 time servers; Whether monitor described gps clock pattern breaks down; And when described gps clock pattern breaks down, switch to described 1588 clock modules.
According to another aspect of the present invention, a kind of multi-mode clock is provided, wherein said multi-mode comprises as the gps clock pattern of active clock with as 1588 clock modules based on 1588 agreements of standby clock, described multi-mode clock comprises: receiving system is used for receiving respectively the temporal information from gps time server and 1588 time servers; Frequency synchronization device is used under described gps clock pattern, based on the temporal information from described gps time server, carries out the Frequency Synchronization with described gps time server; The first-phase bit synchronizer is used under described gps clock pattern, based on the temporal information from described gps time server, carries out the Phase synchronization with described gps time server; Clock forming device is used for generating synchronizing clock signals; The protocol stack starting drive is used for starting 1588 protocol stacks under described 1588 clock modules; Checkout gear is used under described 1588 clock modules, and whether the described Frequency Synchronization that detects under described gps clock pattern is completed; The second-phase bit synchronizer, be used under described 1588 clock modules, complete if detect as the described Frequency Synchronization under described gps clock pattern, based on the temporal information from described 1588 time servers, carry out the Phase synchronization with described 1588 time servers; Whether supervising device is used for monitoring described gps clock pattern and breaks down; And switching device shifter, be used for switching to described 1588 clock modules when described gps clock pattern breaks down.
Description of drawings
Fig. 1 is the flow chart of the changing method of multi-mode clock according to an embodiment of the invention;
Fig. 2 is the schematic block diagram of multi-mode clock according to an embodiment of the invention.
Fig. 3 means the schematic diagram of the state conversion under 1588 clock modules of multi-mode clock shown in Figure 2.
Embodiment
To the detailed description of specific embodiments of the invention, above and other objects of the present invention, feature and advantage will become more obvious below by by reference to the accompanying drawings.
Fig. 1 is the flow chart of the changing method of multi-mode clock according to an embodiment of the invention.Below in conjunction with accompanying drawing, the present embodiment is described in detail.
In the present embodiment, the multi-mode of multi-mode clock comprises as the gps clock pattern of active clock with as 1588 clock modules based on 1588 agreements of standby clock.Although describe as example as active clock take gps clock in the present embodiment, those of ordinary skill in the art easily understands, and also can adopt other circuit clock as active clock.
As shown in Figure 1, at step S101, receive respectively the temporal information from gps time server and 1588 time servers.In the present embodiment, the gps time server obtains standard from gps satellite time signal is providing master clock, and 1588 time servers are master clocks of supporting 1588 agreements, can use GPS as reference clock.For example, in mobile communication system, 1588 time servers can be arranged in core net.The temporal information that gps time server and 1588 time servers provide comprises that separately master clock is about the information of frequency and phase place.
Then, at step S105, under the gps clock pattern, based on the temporal information from the gps time server that receives, carry out Frequency Synchronization and Phase synchronization with the gps time server.For Frequency Synchronization and the Phase synchronization of gps clock, can adopt existing any one to be used for Frequency Synchronization and phase locked method.Existing frequency and phase locked method are known for the person of ordinary skill of the art, omit corresponding explanation herein.
After the Frequency Synchronization and Phase synchronization completed with the gps time server, at step S110, generate synchronizing clock signals.Like this, multi-mode clock provides synchronizing clock signals under the gps clock pattern, and multi-mode clock is operated in the GSP clock module.
With operation under the gps clock pattern concurrently, at step S115, under 1588 clock modules, start 1588 protocol stacks, to synchronize with 1588 time servers.
Then, at step S120, whether the Frequency Synchronization that detects under the gps clock pattern is completed.In the present embodiment, can indicate the state of Frequency Synchronization by Status Flag is set, for example, show that with " 1 " frequency is synchronous, show that with " 0 " frequency is not synchronous.In this case, check the Status Flag that is used to indicate Frequency Synchronization, if Status Flag is set to indicate frequency synchronous, for example " 1 " shows that the Frequency Synchronization under the gps clock pattern is completed.If Status Flag is set to indicate frequency not synchronous, for example " 0 " is continued to wait for, and is periodically checked this Status Flag.Certainly, for the person of ordinary skill of the art, except the method for above-mentioned detection Frequency Synchronization, can also expect easily that other can be used in the method whether Frequency Synchronization is completed that detects.
Then, at step S125, when detection is completed for the Frequency Synchronization under the gps clock pattern, under 1588 clock modules, based on the temporal information from 1588 time servers that receives, carry out the Phase synchronization with 1588 time servers.
According to 1588 agreements, synchronous basic principle comprises that master clock sends temporal information and from the record of clock receiving time information, and each temporal information is added timestamp, then, according to the timestamp of temporal information, can measure from master clock to the transmission delay from clock.In the present embodiment, at first, measure the transmission delay between 1588 time servers (master clock) and multi-mode clock (from clock).Particularly, 1588 time servers send sync message (Sync) and follow message (Follow_up) to multi-mode clock, wherein sync message and follow message and comprise respectively the expectation transmitting time of describing sync message and true transmitting time.Multi-mode clock receives sync message and records the true time of reception of this sync message.Multi-mode clock to 1588 time server transmission lag request messages (Delay_Req), and records the true transmitting time of this delay request message after receiving sync message.1588 time servers postpone request message in response to this, transmission lag response message (Delay_Resp), and it comprises the true time of reception that postpones request message.Like this, by relatively true transmitting time and the true time of reception of sync message and true transmitting time and the true time of reception that postpones request message, can measure the transmission delay from 1588 time servers to multi-mode clock.Then, according to measured transmission delay, revise the time of multi-mode clock, thereby realize the Phase synchronization of multi-mode clock and 1588 time servers.
Synchronous by above protocol stack, detect Frequency Synchronization and phase locked operation, 1588 clocks are resumed, and prepare to provide synchronizing clock signals.
When multi-mode clock is in the gps clock pattern, under 1588 clock modules, carry out termly above-mentioned protocol stack synchronous, detect Frequency Synchronization and phase locked operation.
After multi-mode clock was started working under the gps clock pattern, at step S130, whether the monitoring GPS clock module broke down.If monitoring the gps clock pattern breaks down, at step S135, the mode of operation of multi-mode clock is switched to 1588 clock modules from the gps clock pattern, thereby make multi-mode clock work under 1588 clock modules, generate synchronizing clock signals (as the arrow that dots in figure).
Can find out by above description, in the changing method of the multi-mode clock of the present embodiment, due to the gps clock pattern under operation carry out concurrently synchronizeing of protocol stack, frequency and phase place under 1588 clock modules, therefore, when multi-mode clock switches from the gps clock pattern to 1588 clock modules, synchronizing clock signals can be provided under 1588 clock modules at once, thereby reduced the switching time of pattern, realize quick and level and smooth pattern switching, increased the stability of multi-mode clock, reduced clock and wrong risk occurred.
Under same inventive concept, Fig. 2 shows the schematic block diagram of multi-mode clock 200 according to an embodiment of the invention.Below in conjunction with accompanying drawing, the present embodiment is described in detail, wherein for the part identical with the embodiment of front, suitably the description thereof will be omitted.
In the present embodiment, the multi-mode of multi-mode clock 200 comprises as the gps clock pattern of active clock with as 1588 clock modules based on 1588 agreements of standby clock.
As shown in Figure 2, the multi-mode clock 200 of the present embodiment comprises: receiving system 201, and it receives respectively the temporal information from gps time server and 1588 time servers; Frequency synchronization device 202, it based on the temporal information from the gps time server that receives, carries out the Frequency Synchronization with the gps time server under the gps clock pattern; First-phase bit synchronizer 203, it based on the temporal information from the gps time server that receives, carries out the Phase synchronization with the gps time server under the gps clock pattern; Clock forming device 204, it generates synchronizing clock signals; Protocol stack starting drive 205, it starts 1588 protocol stacks under 1588 clock modules; Checkout gear 206, they are under 1588 clock modules, and whether the Frequency Synchronization that detects under the gps clock pattern is completed; Second-phase bit synchronizer 207, they are under 1588 clock modules, if checkout gear 206 detects as the Frequency Synchronization under the gps clock pattern and completes, based on the temporal information from 1588 time servers that receives, carry out the Phase synchronization with 1588 time servers; Supervising device 208, whether its monitoring GPS clock module breaks down; And switching device shifter 209, when it breaks down in the gps clock pattern, switch to 1588 clock modules.
In the multi-mode clock 200 of the present embodiment, receiving system 201 receives respectively the temporal information that gps time server and 1588 time servers send.As previously mentioned, temporal information comprises the information of master clock aspect frequency and phase place.In the present embodiment, receiving system 201 can comprise for the first receiving element that receives the temporal information that the gps time server sends and be used for receiving the second receiving element of the temporal information that 1588 time servers send.
After receiving system 201 has received temporal information from gps time server and 1588 time servers, under the gps clock pattern, frequency synchronization device 202 begins to carry out the Frequency Synchronization with the gps time server, and first-phase bit synchronizer 203 begins to carry out the Phase synchronization with the gps time server.After Frequency Synchronization and Phase synchronization were completed, clock forming device 204 generated synchronizing clock signals.At this moment, multi-mode clock 200 is operated under the gps clock pattern.In the present embodiment, clock forming device 204 can comprise crystal oscillator, phase-locked loop and configurable counter.
Therewith concurrently, under 1588 clock modules, protocol stack starting drive 205 starts 1588 protocol stacks, and synchronizeing with 1588 time servers, and whether the Frequency Synchronization that checkout gear 206 detects under the gps clock pattern is completed.In the present embodiment, can indicate by Status Flag is set the state of Frequency Synchronization.In this case, in checkout gear 206, sign inspection unit 2061 checks the Status Flag that is used to indicate Frequency Synchronization, if Status Flag is set to indicate frequency synchronous, shows that the Frequency Synchronization under the gps clock pattern is completed.When checkout gear 206 detects after the Frequency Synchronization under the gps clock pattern has been completed, 207 beginnings of second-phase bit synchronizer are carried out under 1588 clock modules and the synchronizeing of 1588 time servers.In second-phase bit synchronizer 207, the transmission delay that measuring unit 2071 is measured between 1588 time servers and multi-mode clock 200, and by amending unit 2072 according to measured transmission delay, revise the time of multi-mode clock 200, to realize Phase synchronization.
After multi-mode clock 200 was worked under the gps clock pattern, whether supervising device 208 monitoring GPS clock modules broke down.When supervising device 208 monitored the gps clock pattern and breaks down, switching device shifter 209 switched to 1588 clock modules (as shown in phantom in FIG.) with the mode of operation of multi-mode clock 200 from the gps clock pattern.
The multi-mode clock 200 of the present embodiment can be used as the clock system of the base station of mobile communication system.
The multi-mode clock 200 that should be pointed out that the present embodiment can be realized the changing method of the multi-mode clock of embodiment shown in Figure 1 in operation.
Should be understood that, the multi-mode clock of above-described embodiment and part thereof can be by such as very lagre scale integrated circuit (VLSIC) or gate array, realize such as the semiconductor of logic chip, transistor etc. or such as the hardware circuit of the programmable hardware device of field programmable gate array, programmable logic device etc., also can use the software of being carried out by various types of processors to realize, also can be realized by the combination of above-mentioned hardware circuit and software.
Fig. 3 shows the schematic diagram of the state conversion under 1588 clock modules that represent multi-mode clock shown in Figure 2.As shown in Figure 3, under 1588 clock modules, at first enter starting state, under this state, execution 1588 protocol stacks are synchronizeed with 1588 time servers.Then, enter the Frequency Synchronization detected state, under this state, whether the frequency that detects under the gps clock pattern is synchronous, if it is not synchronous frequency to be detected, keeps this state, if it is synchronous frequency to be detected, enters NextState, i.e. phase synchronization state.Under phase synchronization state, the Phase synchronization of execution and 1588 time servers, and after completing Phase synchronization, 1588 clocks are resumed, and enter listening state.Under listening state, wait for switching command, and after receiving switching command, enter operating state so that synchronizing clock signals to be provided.In addition, under listening state, periodically return to starting state when not receiving switching command, synchronous to upgrade.
Although above changing method and the corresponding multi-mode clock of describing multi-mode clock of the present invention by exemplary embodiment in detail, but above these embodiment are not exhaustive, and those skilled in the art can realize variations and modifications within the spirit and scope of the present invention.Therefore, the present invention is not limited to these embodiment, and scope of the present invention is only defined by the appended claims.
Claims (6)
1. the changing method of a multi-mode clock, wherein, described multi-mode comprises that described method comprises as the gps clock pattern of active clock with as 1588 clock modules based on 1588 agreements of standby clock:
Receive respectively the temporal information from gps time server and 1588 time servers;
Under described gps clock pattern:
Based on the temporal information from described gps time server, carry out Frequency Synchronization and Phase synchronization with described gps time server;
Generate synchronizing clock signals;
Under described 1588 clock modules:
Start 1588 protocol stacks;
Whether the described Frequency Synchronization that detects under described gps clock pattern is completed;
Complete if detect as the described Frequency Synchronization under described gps clock pattern, based on the temporal information from described 1588 time servers, carry out the Phase synchronization with described 1588 time servers;
Whether monitor described gps clock pattern breaks down; And
When described gps clock pattern breaks down, switch to described 1588 clock modules.
2. changing method according to claim 1, wherein, detect the step whether described Frequency Synchronization under described gps clock pattern complete and comprise:
Inspection is used to indicate the Status Flag of Frequency Synchronization; And
If described Status Flag is set to indicate frequency synchronous, show that the described Frequency Synchronization under described gps clock pattern is completed.
3. changing method according to claim 1, wherein, under described 1588 clock modules, the phase locked step of carrying out with described 1588 time servers comprises:
Measure the transmission delay between described 1588 time servers and described multi-mode clock; And
According to described transmission delay, revise the time of described multi-mode clock.
4. multi-mode clock, wherein said multi-mode comprise that described multi-mode clock comprises as the gps clock pattern of active clock with as 1588 clock modules based on 1588 agreements of standby clock:
Receiving system is used for receiving respectively the temporal information from gps time server and 1588 time servers;
Frequency synchronization device is used under described gps clock pattern, based on the temporal information from described gps time server, carries out the Frequency Synchronization with described gps time server;
The first-phase bit synchronizer is used under described gps clock pattern, based on described temporal information, carries out the Phase synchronization with described gps time server;
Clock forming device is used for generating synchronizing clock signals;
The protocol stack starting drive is used for starting 1588 protocol stacks under described 1588 clock modules;
Checkout gear is used under described 1588 clock modules, and whether the described Frequency Synchronization that detects under described gps clock pattern is completed;
The second-phase bit synchronizer, be used under described 1588 clock modules, complete if detect as the described Frequency Synchronization under described gps clock pattern, based on the temporal information from described 1588 time servers, carry out the Phase synchronization with described 1588 time servers;
Whether supervising device is used for monitoring described gps clock pattern and breaks down; And
Switching device shifter is used for switching to described 1588 clock modules when described gps clock pattern breaks down.
5. multi-mode clock according to claim 4, wherein, described checkout gear comprises:
The sign inspection unit is used for checking the Status Flag that is used to indicate Frequency Synchronization, if described Status Flag is set to indicate frequency synchronous, shows that the described Frequency Synchronization under described gps clock pattern is completed.
6. multi-mode clock according to claim 4, wherein, described second-phase bit synchronizer comprises:
Measuring unit is used for measuring the transmission delay between described 1588 time servers and described multi-mode clock; And
Amending unit is used for according to described transmission delay, revises the time of described multi-mode clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110334696.8A CN103095446B (en) | 2011-10-28 | 2011-10-28 | The changing method of multi-mode clock and corresponding multi-mode clock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110334696.8A CN103095446B (en) | 2011-10-28 | 2011-10-28 | The changing method of multi-mode clock and corresponding multi-mode clock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103095446A true CN103095446A (en) | 2013-05-08 |
| CN103095446B CN103095446B (en) | 2015-09-02 |
Family
ID=48207612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110334696.8A Active CN103095446B (en) | 2011-10-28 | 2011-10-28 | The changing method of multi-mode clock and corresponding multi-mode clock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103095446B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111598727A (en) * | 2020-07-23 | 2020-08-28 | 国网江西省电力有限公司电力科学研究院 | Method for improving metering clock synchronization of intelligent substation based on code phase counting method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459500B (en) * | 2007-12-14 | 2011-11-16 | 华为技术有限公司 | Method for implementing time master-slave protection and time master-slave protection device |
| CN102013920A (en) * | 2010-12-03 | 2011-04-13 | 中兴通讯股份有限公司 | Clock backup method and system for time division duplex base station |
| CN102056285A (en) * | 2011-01-18 | 2011-05-11 | 大唐移动通信设备有限公司 | Clock synchronization method, system and equipment |
-
2011
- 2011-10-28 CN CN201110334696.8A patent/CN103095446B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111598727A (en) * | 2020-07-23 | 2020-08-28 | 国网江西省电力有限公司电力科学研究院 | Method for improving metering clock synchronization of intelligent substation based on code phase counting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103095446B (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110493744B (en) | Data synchronous acquisition method and system of master-slave wireless sensor | |
| US8689035B2 (en) | Communication system, communication interface, and synchronization method | |
| CN102752065B (en) | A kind of method for synchronizing time and system | |
| JP2013505653A (en) | Method and system for realizing time synchronization in a local area network | |
| EP3531610B1 (en) | Frequency synchronization method and slave clock | |
| CN102013967B (en) | 1588 protocol-based beidou time synchronization device and application thereof | |
| CN101765198B (en) | Clock synchronization method, clock synchronization device and clock synchronization system | |
| CN109996325B (en) | Clock synchronization system and method of wireless sensor network | |
| WO2021136149A1 (en) | Clock synchronization method and apparatus, computer device, and storage medium | |
| JP2011193457A (en) | System and method for performing time synchronization | |
| EP3893427A1 (en) | Clock synchronization method and apparatus and storage medium | |
| JP2015119257A (en) | Time synchronization system, slave device, and time synchronization method | |
| CN111385051A (en) | Clock synchronization method, device and storage medium | |
| CN103095446B (en) | The changing method of multi-mode clock and corresponding multi-mode clock | |
| CN101692632B (en) | Method and device for supporting transmission clock | |
| CN106647228B (en) | Converter station master clock fault judgment system | |
| CN117320144A (en) | Primary and secondary clock time synchronization method and system based on wireless communication | |
| CN110620630B (en) | Time synchronization method, device, network equipment and computer readable storage medium | |
| CN111506156A (en) | Time service method and system of processor array | |
| WO2013091202A1 (en) | Synchronization method, device and system | |
| CN104993920A (en) | SNTP-based synchronization time method and SNTP client | |
| CN112654082A (en) | Timing device, base station, positioning system, calibration method and positioning method | |
| US20240204896A1 (en) | Method for monitoring time synchronization | |
| US9703315B2 (en) | Transmission device and time synchronization method | |
| US20230275679A1 (en) | Method and apparatus for synchronizing signals of signal measuring devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201206 Pudong Jinqiao Ning Road, Shanghai, No. 388 Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong Jinqiao Ning Road, Shanghai, No. 388 Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |