CN117439692A - Clock synchronization device for private network deployment IMS system - Google Patents
Clock synchronization device for private network deployment IMS system Download PDFInfo
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- CN117439692A CN117439692A CN202311763388.6A CN202311763388A CN117439692A CN 117439692 A CN117439692 A CN 117439692A CN 202311763388 A CN202311763388 A CN 202311763388A CN 117439692 A CN117439692 A CN 117439692A
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- ims system
- private network
- ims
- external clock
- clock module
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- 238000004891 communication Methods 0.000 claims abstract description 17
- 230000003993 interaction Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0644—External master-clock
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
A clock synchronization device of a private network deployment IMS system belongs to the field of communication technology clock synchronization, and is characterized in that: the system comprises an IMS system and an external clock module; the IMS system is connected with an external clock module; the external clock module is based on the connected IMS system, and takes a hardware serial port corresponding to the bearing X86 platform as a clock acquisition reference. Through the improvement of the existing IMS system, the problem of asynchronous intercommunication clocks among IMS systems deployed by the proprietary private network can be effectively solved by setting an external clock module with a unified time reference as a clock source, the popularization and the realization under the proprietary private network of the IMS system can be greatly promoted, the deployment cost is low, and the operation is reliable.
Description
Technical Field
The invention belongs to the field of communication technology clock synchronization, and particularly relates to a clock synchronization device for a private network deployment IMS system.
Background
Clock synchronization is important in information and communication systems, and if the clocks of the information or communication systems are not synchronized, the information interaction is difficult to realize and the control is disordered, so that clock synchronization between the systems can be ensured by constructing a clock synchronization system alone in the construction of the information and communication systems.
IMS (IP Multimedia Subsystem; IP multimedia system), which is a new generation communication exchange technical standard established internationally, is mainly applied to communication operators to provide the exchange capability of voice, video and data communication between mobile phones and fixed phones, if the communication operators are privately deployed based on the enterprise private network environment, the clock synchronization problem of the intercommunication among IMS systems is involved, if the clock synchronization system is independently built, the cost is huge and the safety problem of the interconnection and intercommunication across networks is difficult to solve, if the clocks of the intercommunication among IMS systems deployed by the privately deployed private networks are not synchronous, the time of the ticket of the interconnection and intercommunication among IMS systems is inconsistent; especially, the system main and standby architecture and the ultra-long distance are used for realizing the interconnection and intercommunication between IMS systems, if clocks are not synchronized, normal communication between IMS systems can be influenced, and at present, no good solution is provided for the problem of clock asynchronization of the interconnection and intercommunication between IMS systems deployed by an enterprise private network.
Disclosure of Invention
The invention aims to solve the problems and provides a clock synchronization device for a private network deployment IMS system, which solves the problem of asynchronous intercommunication clocks among subsystems.
The invention relates to a clock synchronization device of a private network deployment IMS system, which comprises an IMS system and an external clock module; the IMS system is connected with an external clock module;
the external clock module is based on the connected IMS system, and takes a hardware RS232 serial port corresponding to the bearing X86 platform as a clock acquisition reference.
The private network deploys the clock synchronization device of the IMS system, and the communication delay range between the IMS system and the external clock module is 200-500 nanoseconds.
The invention discloses a clock synchronization device for an IMS (IP multimedia subsystem) system deployed by a private network, wherein a heartbeat interaction time is established between the IMS system and an external clock module by setting up an encryption protocol. The IMS system can identify the ID and the specific link identifier of the external connection clock module through the private encryption protocol, and the external clock module defaulted by the non-IMS system can not realize access through verification.
The private network deploys the clock synchronization device of the IMS system, and the external clock module is developed based on STM32 series MCU (Microcontroller Unit; micro control unit).
The clock synchronization device of the private network deployment IMS system of the invention, through improving the existing IMS system, through setting an external clock module with a unified time reference as a clock source, the method can effectively solve the problem of asynchronous intercommunication clocks among IMS systems deployed by the privately owned private network, can greatly promote popularization and realization under the private network of the IMS system, and has low deployment cost and reliable operation.
Drawings
Fig. 1 is a schematic diagram of a clock synchronization device of an IMS system deployed by a private network according to the present invention;
fig. 2 is a schematic diagram of an external clock module according to the present invention.
Detailed Description
The following describes the clock synchronization device of the private network deployment IMS system in detail through the accompanying drawings and the embodiments.
At present, the clock synchronization of a core software system is mostly realized by adopting external time service modes such as satellites, and the like, the construction, operation and use costs of the mode are high, if the mode is applied to the IMS system deployment under a private network, the deployment of the IMS system clock synchronization under the private network cannot be realized, but the clock synchronization of the IMS system is affected by normal communication, charging and call ticket.
The clock synchronization device of the private network deployment IMS system in this embodiment, as shown in FIG. 1, includes two IMS systems and an external clock module; the IMS system is connected with an external clock module; the external clock module replaces the original IMS system with an internal clock by an external clock acquisition mode through secondary development based on the connected IMS system, and takes a hardware serial port corresponding to the X86 platform as a clock acquisition interface reference.
In the embodiment of the disclosure, as shown in fig. 2, the external clock module includes clock chips DS1302 and 8051 single-chip microcomputer, and the external clock module is connected with a hardware RS232 serial port of the IMS system through an RS232 serial port. The external clock module and the IMS system communicate by setting up a private encryption protocol, and the external clock module which does not accord with the private encryption protocol cannot access the IMS system. After the IMS system is accessed to the external clock module, the clock synchronization of the IMS system deployed under the private network can be realized.
In the embodiment of the disclosure, the communication delay between the IMS system and the external clock module ranges from 200 nanoseconds to 500 nanoseconds. Meanwhile, in view of fault tolerance between the IMS system and the external clock, a heartbeat interaction time is established for communication between the IMS system and the clock module through a private protocol, so that when the communication between the IMS system and the external clock module through a serial port is abnormal, the time within 200-500 nanoseconds of the external clock module is still used as the reference.
The clock synchronization device of the IMS system is deployed by the private network, adopts HEX format, baud rate 4800, heartbeat packet is once per second, the communication delay range between the external clock module and the IMS system is 200-500 nanoseconds to realize time service to the IMS system, the satellite time service obtained when the IMS system is cooperated with other systems is used for correcting errors, so that the intercommunication clock synchronization among IMS systems under the private network is realized uniformly by an external clock module developed based on the IMS system under the condition that the satellite time service is not available; if the third party system has satellite time service when cooperating with the third party system, the IMS system under the private network can be subjected to unified clock synchronous verification; if the third party system is cooperated with the third party system and the third party system does not have satellite time service, clock synchronization can also be provided for the third party system through the scheme in the embodiment.
Claims (4)
1. The clock synchronization device of the IMS system is deployed by a private network, which is characterized in that: the system comprises an IMS system and an external clock module; the IMS system is connected with an external clock module;
the external clock module is based on the connected IMS system, and takes a hardware serial port corresponding to the bearing X86 platform as a clock acquisition reference.
2. The clock synchronization apparatus for a private network deployment IMS system of claim 1, wherein: the communication delay between the IMS system and the external clock module ranges from 200 nanoseconds to 500 nanoseconds.
3. The clock synchronization apparatus for a private network deployment IMS system of claim 2, wherein: and establishing a heartbeat interaction time between the IMS system and the external clock module by setting up an encryption protocol.
4. A clock synchronization apparatus for a private network deployment IMS system according to claim 3, wherein: the external clock module is developed based on STM32 series MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311763388.6A CN117439692A (en) | 2023-12-21 | 2023-12-21 | Clock synchronization device for private network deployment IMS system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311763388.6A CN117439692A (en) | 2023-12-21 | 2023-12-21 | Clock synchronization device for private network deployment IMS system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117439692A true CN117439692A (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311763388.6A Pending CN117439692A (en) | 2023-12-21 | 2023-12-21 | Clock synchronization device for private network deployment IMS system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5475717A (en) * | 1990-12-11 | 1995-12-12 | Alcatel Business Systems | Method of ensuring that each node of a private telecommunication network is synchronized to the best available clock at all times |
| CN101364998A (en) * | 2008-09-18 | 2009-02-11 | 深圳华为通信技术有限公司 | IMS implementing method, apparatus and system |
| CN101569134A (en) * | 2006-12-29 | 2009-10-28 | 朗讯科技公司 | User equipment timestamps for offline charging in IMS networks |
| CN105656590A (en) * | 2015-12-30 | 2016-06-08 | 天维尔信息科技股份有限公司 | Time synchronization method, device and system |
| CN106209082A (en) * | 2016-07-08 | 2016-12-07 | 四川和芯微电子股份有限公司 | Phase-locked loop circuit |
| CN115694698A (en) * | 2021-07-28 | 2023-02-03 | 中国电信股份有限公司 | Extended small base station system and clock synchronization method thereof |
-
2023
- 2023-12-21 CN CN202311763388.6A patent/CN117439692A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5475717A (en) * | 1990-12-11 | 1995-12-12 | Alcatel Business Systems | Method of ensuring that each node of a private telecommunication network is synchronized to the best available clock at all times |
| CN101569134A (en) * | 2006-12-29 | 2009-10-28 | 朗讯科技公司 | User equipment timestamps for offline charging in IMS networks |
| CN101364998A (en) * | 2008-09-18 | 2009-02-11 | 深圳华为通信技术有限公司 | IMS implementing method, apparatus and system |
| CN105656590A (en) * | 2015-12-30 | 2016-06-08 | 天维尔信息科技股份有限公司 | Time synchronization method, device and system |
| CN106209082A (en) * | 2016-07-08 | 2016-12-07 | 四川和芯微电子股份有限公司 | Phase-locked loop circuit |
| CN115694698A (en) * | 2021-07-28 | 2023-02-03 | 中国电信股份有限公司 | Extended small base station system and clock synchronization method thereof |
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