CN112929116A

CN112929116A - Method, device and system for transmitting time synchronization signal

Info

Publication number: CN112929116A
Application number: CN202110067619.4A
Authority: CN
Inventors: 刘雁斌; 赖柏辉; 陈烈强; 符慧迪; 刘璐; 罗洪江; 林淇帆; 王宝俊; 袁鹏; 陈平聂
Original assignee: China United Network Communications Group Co Ltd; China Information Technology Designing and Consulting Institute Co Ltd
Current assignee: China United Network Communications Group Co Ltd; China Information Technology Designing and Consulting Institute Co Ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-06-08

Abstract

The application provides a method, a device and a system for transmitting a time synchronization signal, relates to the technical field of communication, and can realize that the time synchronization signal is transmitted through an IPRAN + OTN network. The transmission method can be applied to Optical Transport Network (OTN) equipment, wherein the OTN equipment is connected with a time server and is connected with Internet Protocol Radio Access Network (IPRAN) equipment; the transmission method may include: receiving a time synchronization signal sent by a time server; the time synchronization signal comprises a time signal and a frequency signal; and sending a time synchronization signal to the IPRAN equipment.

Description

Method, device and system for transmitting time synchronization signal

Technical Field

Embodiments of the present application relate to the field of communications technologies, and in particular, to a method, an apparatus, and a system for transmitting a time synchronization signal.

Background

In the wireless network technology, a base station needs to acquire a time synchronization signal generated by a time server and then update its own time according to the time synchronization signal. In the fifth generation mobile communication technology (5G) 5G, the 5G base station has a higher requirement for the accuracy of time synchronization, and needs to update its own time based on the time signal and the frequency signal generated by the high-accuracy time server.

Specifically, the high-precision time server may transmit the time signal and the frequency signal to the base station through a radio bearer. However, in the prior art, there is no method for carrying the transmission time synchronization signal through an Interconnection Protocol Radio Access Network (IPRAN) + Optical Transport Network (OTN) network.

Disclosure of Invention

The application provides a method, a device and a system for transmitting a time synchronization signal, which can realize the purpose of transmitting the time synchronization signal through an IPRAN + OTN network.

The technical scheme is as follows:

in a first aspect, the present application provides a method for transmitting a time synchronization signal, where the method is applied to an optical transport network OTN device, the OTN device is connected to a time server, and the OTN device is connected to an internet protocol radio access network IPRAN device; the transmission method may include: receiving a time synchronization signal sent by a time server; the time synchronization signal comprises a time signal and a frequency signal; and sending a time synchronization signal to the IPR AN equipment.

According to the transmission method of the time synchronization signal, when the time synchronization signal is transmitted, the OTN equipment is connected with the time server, so that the OTN equipment can receive the time synchronization signal which is sent by the time server and contains the time signal and the frequency signal; connecting the OTN equipment with the IPRAN equipment so that the OTN equipment can send the time synchronization signal to the IPRAN equipment; therefore, the transmission time synchronization signal is borne through the IPRAN + OTN network.

With reference to the first aspect, in a possible implementation manner, the connecting, by the OTN device, the time server through the specific service board, and receiving the time synchronization signal sent by the time server may include: the time synchronization signal is received by the service specific board. In the possible implementation mode, the time synchronization signal is received through the specific service board, and the compatibility is strong.

With reference to the first aspect or one of the foregoing possible implementation manners, in another possible implementation manner, the connecting, by the OTN device, the time server through the master clock board, and receiving the time synchronization signal sent by the time server may include: and receiving the time synchronization signal through the master control clock board. In the possible implementation mode, the time synchronization signal is received through the master control clock board, and the implementation is simple and convenient.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner, the sending, by the OTN device, the time synchronization signal to the IPRAN device by connecting the OTN device to the IPRAN device through a specific service board may include: and sending a time synchronization signal to the IPRAN equipment through the service specific board. In the possible implementation mode, the time synchronization signal is received through the specific service board, and the compatibility is strong.

With reference to the first aspect or any one of the foregoing possible implementation manners, in another possible implementation manner, the sending, by the OTN device, the time synchronization signal to the IPRAN device by connecting the OTN device to the IPRAN device through the master control clock board may include: and sending a time synchronization signal to the IPRAN equipment through the master control clock board. In the possible implementation mode, the time synchronization signal is received through the master control clock board, and the implementation is simple and convenient.

In a second aspect, the present application further provides a device for transmitting a time synchronization signal, where the device may be an OTN device in the first aspect or any one of the possible implementation manners of the first aspect, or the device may be deployed in the OTN device. The OTN equipment is connected with the time server and the Internet protocol radio access network IPRAN equipment; the transmission device includes a receiving unit and a transmitting unit. Wherein:

the receiving unit is used for receiving the time synchronization signal sent by the time server; the time synchronization signal includes a time signal and a frequency signal.

And the sending unit is used for sending the time synchronization signal to the IPRAN equipment.

It should be noted that, the transmission apparatus provided in the second aspect is configured to execute the method for transmitting the time synchronization signal provided in the first aspect or any one of the possible implementation manners of the first aspect, and specific implementation of the first aspect may refer to the specific implementation of the first aspect, and details are not described here again.

In a third aspect, the present application provides an OTN device. The apparatus may comprise a processor configured to implement the method for transmitting a time synchronization signal described in the first aspect above. The device may further include a memory coupled to the processor, and when the processor executes the instructions stored in the memory, the method for transmitting the time synchronization signal described in the first aspect or any one of the possible implementations of the first aspect may be implemented. The device may also include a communication interface for the apparatus to communicate with other devices, which may be, for example, a transceiver, circuit, bus, module, or other type of communication interface. In one possible implementation, the apparatus may include:

a memory may be used to store instructions.

And the processor can be used for calling the storage instruction and realizing the following through the communication interface: receiving a time synchronization signal sent by a time server; the time synchronization signal comprises a time signal and a frequency signal; and sending a time synchronization signal to the IPRAN equipment.

In the present application, the instructions in the memory may be stored in advance, or may be downloaded from the internet and stored when the apparatus is used. The coupling in the embodiments of the present application is an indirect coupling or connection between devices, units or modules, which may be in an electrical, mechanical or other form, and is used for information interaction between the devices, units or modules.

In a fourth aspect, a transmission system of a time synchronization signal is provided, where the transmission system may include a transmission apparatus of the time synchronization signal, and the transmission apparatus may be the apparatus in the second aspect or any possible implementation manner of the second aspect.

In a fifth aspect, a transmission system of a time synchronization signal is provided, where the system may include an OTN device, and the OTN device may be a device in the third aspect or any possible implementation manner of the third aspect.

In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, which includes instructions, when executed on a computer, for causing the computer to perform the method for transmitting a time synchronization signal according to any one of the above aspects or any one of the possible implementations.

In a seventh aspect, an embodiment of the present application further provides a computer program product, which when run on a computer, causes the computer to execute the method for transmitting a time synchronization signal according to any one of the above aspects or any one of the possible implementations.

In an eighth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor and may further include a memory, and is configured to execute the method for transmitting a time synchronization signal according to any one of the foregoing aspects or any one of the foregoing possible implementation manners. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

The solutions provided in the second aspect to the eighth aspect are used to implement the method for transmitting the time synchronization signal provided in the first aspect or any one of the possible implementation manners of the first aspect, and therefore, the same beneficial effects as the first aspect may be achieved, and details are not repeated here.

It should be noted that, on the premise of not contradicting the scheme, various possible implementation manners of any one of the above aspects may be combined.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Wherein the connecting lines in the figures only indicate that communication is possible between two devices. The specific communication mode may be wireless communication or wired communication; can be determined according to actual conditions.

Fig. 1 is a schematic structural diagram of a network architecture according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an OTN device provided in an embodiment of the present application;

fig. 3 is a flowchart illustrating a method for transmitting a time synchronization signal according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a connection relationship between an OTN core layer device and a time server according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of another connection relationship between an OTN core layer device and a time server according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a connection relationship between one OTN convergence layer device and another OTN convergence layer device provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a connection relationship between an OTN convergence layer device and an ip ran device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of another connection relationship between an OTN convergence layer device and an ip ran device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a transmission apparatus for a time synchronization signal according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another OTN device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the embodiments of the present application, for convenience of clearly describing the technical solutions of the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items with substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance. The technical features described in the first and second descriptions have no sequence or magnitude order.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion for ease of understanding.

In the description of the present application, a "/" indicates a relationship in which the objects associated before and after are an "or", for example, a/B may indicate a or B; in the present application, "and/or" is only an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. Also, in the description of the present application, "a plurality" means two or more than two unless otherwise specified. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

In the embodiments of the present application, at least one may also be described as one or more, and a plurality may be two, three, four or more, which is not limited in the present application.

As can be seen from the above description, there is no method for carrying a transmission time synchronization signal through an IPRAN + OTN network in the prior art. Based on this, the application provides a method for transmitting a time synchronization signal, wherein when the time synchronization signal is transmitted, an OTN device is connected to a time server, so that the OTN device can receive the time synchronization signal including a time signal and a frequency signal sent by the time server; connecting the OTN equipment with the IPRAN equipment so that the OTN equipment can send the time synchronization signal to the IPRAN equipment; therefore, the transmission time synchronization signal is borne through the IPRAN + OTN network.

In order to facilitate understanding of the implementation process of the scheme in the embodiment of the present application, a network architecture in the embodiment of the present application is first described.

It should be noted that the network architecture or may also be referred to as an application scenario to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation to the technical solution provided by the embodiment of the present application, and as a person having ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided by the embodiment of the present application is also applicable to similar architectures and scenarios.

As shown in fig. 1, a schematic structural diagram of a network architecture is provided. As shown in fig. 1, the transmission system 10 may include a timeserver 101, an OTN device 102, and an IPRAN device 103. Wherein, the time server 101 may communicate with the OTN device 102, and the OTN device 102 may communicate with the IPRAN device 103.

Wherein the time server 101 may be configured to generate a time synchronization signal; the time server 101 may also be configured to send the generated time synchronization signal to the OTN device 102. Specifically, the time server 101 may be a high-precision time server or the like that can generate a time synchronization signal. For example, the timeserver 101 may comprise a 1588V2 timeserver.

The OTN device 102 may be configured to receive a time synchronization signal sent by the time server 101; the OTN device 102 may also be used to send a time synchronization signal to the IPRAN device 103. The OTN device 102 may include an OTN core layer device 1021 and an OTN convergence layer device 1022; the OTN core layer device 1021 may communicate with the OTN convergence layer device 1022.

The IPRAN device 103 may be configured to receive a time synchronization signal sent by the OTN device 102; the I PRAN device 103 may also be used to transmit the received time synchronization signal to the base station. For example, the IP RAN equipment 103 may also be configured to send a received time synchronization signal to the 5G base station, so that the 5G base station synchronizes its time according to the time communication signal. The IPRAN device 103 may include a switch, a router, and other devices that implement transmission through an Internet Protocol (IP).

It will be appreciated that in one possible implementation, the network architecture may further include a backup transmission system 10A, wherein the backup transmission system 10A is used in the event of an anomaly in the transmission system 10 for performing a function associated with the transmission system 10. The standby transmission system 10A may have a similar structure to the transmission system 10, and reference may be made to the transmission system 10 specifically, which is not described herein again.

It should be noted that, in the embodiment of the present application, the number, the connection mode, and the like of each device included in the network architecture are not specifically limited; the network architecture shown in fig. 1 is only an exemplary architecture diagram.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In one aspect, an embodiment of the present application provides a transmission apparatus, configured to execute the transmission method of the time synchronization signal provided in the present application. The transmission device may be the OTN device 102 of fig. 1; alternatively, the transmission apparatus may be deployed in the OTN device 102 of fig. 1; alternatively, the transmission device may be another device that can exchange information with the OTN device 102 of fig. 1.

Fig. 2 is a schematic structural component diagram of an OTN device provided in an embodiment of the present application, and as shown in fig. 2, the OTN device 20 may include at least one processor 21, a memory 22, a communication interface 23, and a communication bus 24. The following describes each component of the OTN device 20 in detail with reference to fig. 2:

the processor 21 may be a single processor or may be a general term for a plurality of processing elements. For example, the processor 21 is a Central Processing Unit (CPU), and may be an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, such as: one or more microprocessors (digital signal processors, DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

The processor 21 may perform various functions by running or executing software programs stored in the memory 22, and calling data stored in the memory 22, among other things. In particular implementations, processor 21 may include one or more CPUs such as CPU0 and CPU1 shown in fig. 2 as one example.

In particular implementations, the OTN device 20 may include a plurality of processors, such as the processor 21 and the processor 25 shown in fig. 2, as one embodiment. Each of these processors may be a single-Core Processor (CPU) or a multi-Core Processor (CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

The memory 22 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 22 may be self-contained and coupled to the processor 21 via a communication bus 24. The memory 22 may also be integrated with the processor 21. The memory 22 is used for storing software programs for executing the scheme of the application, and is controlled by the processor 21 to execute.

The communication interface 23 is any device, such as a transceiver, for communicating with other devices or communication networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc.

The communication bus 24 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 2, but it is not intended that there be only one bus or one type of bus.

It should be noted that the components shown in fig. 2 do not constitute a limitation of the OTN device, and the OTN device may include more or less components than those shown, or some components in combination, or a different arrangement of components than those shown in fig. 2.

Specifically, the OTN equipment is connected with a time server, and the OTN equipment is connected with an internet protocol radio access network IPRAN equipment; the processor 21 performs the following functions through the communication interface 23 by running or executing software programs and/or modules stored in the memory 22 and calling data stored in the memory 22:

receiving a time synchronization signal sent by a time server; the time synchronization signal comprises a time signal and a frequency signal; and sending a time synchronization signal to the IPRAN equipment.

On the other hand, the embodiment of the present application provides a method for transmitting a time synchronization signal, which can be applied to the OTN device 20 shown in fig. 2. Specifically, the method for transmitting a time synchronization signal provided in the embodiment of the present application may be used for transmitting the time synchronization signal in an IPRAN + OTN network.

The OTN equipment is connected with the time server, and the OTN equipment is connected with the IPRAN equipment of the wireless access network of the interconnection protocol.

As shown in fig. 3, the method may include:

s301, the time server generates a time synchronization signal.

The time synchronization signal may include a time signal and a frequency signal.

The time signal may also be referred to as a phase synchronization signal. Illustratively, the time signal may comprise a Precision Time Protocol (PTP) signal. The frequency signal may be referred to as a frequency synchronization signal, and illustratively, the frequency signal may include a sync e signal.

Specifically, S301 may be implemented as: the time server generates time information, converts the time information into a time signal and acquires a frequency signal configured by the time transmission system; thereby obtaining a time synchronization signal.

S302, the time server sends a time synchronization signal to the OTN equipment.

Specifically, the time server sends a time synchronization signal to the OTN device through its internal time synchronization board.

And S303, the OTN equipment receives the time synchronization signal sent by the time server.

The OTN device may include an OTN core layer device and an OTN convergence layer device.

In S303, the OTN core layer device first receives the time synchronization signal sent by the time server, and then sends the time synchronization signal to the OTN convergence layer device.

For implementation of receiving the time synchronization signal sent by the time server by the OTN core layer device, the following mode 1 or mode 2 may be included, but not limited.

In the mode 1, the OTN core layer device receives a time synchronization signal sent by a time server through a service specific board.

The specific board may be configured according to actual requirements, which is not limited in this embodiment of the present application.

For example, a particular board may be some customized board on an OTN core layer device for receiving and sending time communication information; alternatively, the specific board may be a board that can receive and send time communication information after a certain board on the OTN core layer device is upgraded.

As shown in fig. 4, in the method 1, the connection relationship between the OTN core layer device and the time server may include: the OTN core layer device comprises an electric layer and an optical layer, wherein the electric layer comprises an electronic shelf and a specific plate; the optical layer comprises a master control clock board and an optical fiber interface board; the specific board is connected with the time synchronization board of the time server through an optical fiber, and the electronic frame of the electric layer is connected with the main control clock board of the optical layer through two network cables.

Specifically, the procedure of transferring the time synchronization signal in the mode 1 may include: a specific plate of an electric layer in OTN core layer equipment receives a time signal and a frequency signal output by a time synchronization plate in a time server through a Gigabit Ethernet (GE) optical path; and sending the time signal and the frequency signal to an electronic frame of the electric layer through a clock module; after receiving the time signal and the frequency signal, the electronic shelf of the electrical layer sends the time signal to the main control clock board of the optical layer through one network cable, and sends the frequency signal to the main control clock board of the optical layer through the other network cable; and after receiving the time signal and the frequency signal, the master control clock board of the optical layer sends the time signal and the frequency signal to the optical fiber interface board of the optical layer through the optical path monitoring board.

In mode 2, the OTN core layer device receives a time synchronization signal sent by the time server through the master clock board.

As shown in fig. 5, in the method 2, the connection relationship between the OTN core layer device and the time server may include: the OTN core layer device comprises an electric layer and an optical layer, wherein the optical layer comprises a master clock board and an optical fiber interface board; the master control clock board is connected with the time synchronization board of the time server through two network cables.

Specifically, the procedure of transferring the time synchronization signal in the mode 2 may include: a master control clock board of an optical layer in OTN core layer equipment receives a time signal output by a time synchronization board of a time synchronization server through a network cable; a master control clock board of an optical layer in OTN core layer equipment receives a frequency signal output by a time synchronization board of a time synchronization server through another network cable; then the master clock board of the optical layer sends time signals and frequency signals to the optical fiber interface board of the optical layer through the optical path monitoring board.

The connection relationship between the OTN core layer device and the OTN convergence layer device may include: and the optical fiber interface board of the optical layer of the OTN core layer equipment is connected with the optical fiber interface board of the optical layer of the OTN convergence layer equipment. For example, the optical fiber interface board of the optical layer of the OTN core layer device and the optical fiber interface board of the optical layer of the OTN convergence layer device are connected by a GE optical path.

The implementation of sending the time synchronization signal from the OTN core layer device to the OTN convergence layer device may include: and the optical fiber interface board of the optical layer of the OTN core layer equipment sends time signals and frequency signals to the optical fiber interface board of the optical layer of the OTN convergence layer equipment through the GE optical path.

Optionally, the OTN convergence layer device may further send a time signal and a frequency signal to another OTN convergence layer device.

For example, as shown in fig. 6, the connection relationship between one OTN convergence layer device and another OTN convergence layer device may include: the OTN convergence layer device may include an optical layer and an electrical layer; the optical layer can comprise one or more optical fiber interface boards and a master clock board; and the optical fiber interface board of the optical layer of one OTN convergence layer device is connected with the optical fiber interface board of the optical layer of another OTN convergence layer device.

Specifically, the optical fiber interface board of the optical layer of one OTN convergence layer device sends a time signal and a frequency signal to another optical fiber interface board of the optical layer of the OTN convergence layer device through the master control clock board, and then sends the time signal and the frequency signal to the optical fiber interface board of the optical layer of another OTN convergence layer device through the GE optical path.

And S304, the OTN equipment sends a time synchronization signal to the IPRAN equipment.

In particular, S304 may be implemented to include, but is not limited to, mode a or mode B described below.

The mode A, OTN device sends a time synchronization signal to the IPRAN device through the service specific board.

For example, a particular board may be some customized board on the OTN convergence layer device for receiving and sending time communication information; alternatively, the specific board may be a board that can receive and send time communication information after a certain board on the OTN convergence layer device is upgraded.

As shown in fig. 7, in the method a, the connection relationship between the OTN convergence layer device and the ip ran device may include: the OTN convergence layer device comprises an electric layer and an optical layer, wherein the electric layer comprises an electronic frame and a specific plate; the optical layer comprises a master control clock board and an optical fiber interface board; the specific board is connected with the IPRAN equipment through optical fibers, and the electronic frame of the electric layer is connected with the main control clock board of the optical layer through two network cables.

Specifically, the procedure of transferring the time synchronization signal in the mode a may include: the method comprises the steps that a main control clock board of an optical layer in the OTN convergence layer device sends a time signal to an electronic frame of an electric layer through a network cable, the main control clock board of the optical layer in the OTN convergence layer device sends a frequency signal to the electronic frame of the electric layer through another network cable, the electronic frame of the electric layer sends the time signal and the frequency signal to a specific board through a clock module after receiving the time signal and the frequency signal, and the specific board sends the time signal and the frequency signal to the IPRAN device through a GE light path after receiving the time signal and the frequency signal.

The mode B, OTN device sends a time synchronization signal to the IPRAN device through the master clock board.

As shown in fig. 8, in the method B, the connection relationship between the OTN convergence layer device and the ip ran device may include: the OTN convergence layer device comprises an electric layer and an optical layer; the optical layer comprises a master control clock board and an optical fiber interface board; the master control clock board is connected with the IPRAN equipment through two network cables.

Specifically, the procedure of transferring the time synchronization signal in the mode B may include: a master control clock board of an optical layer in the OTN convergence layer equipment sends a time signal to the IPRAN equipment through a network cable; and a master control clock board of an optical layer in the OTN convergence layer equipment sends a frequency signal to the IPRAN equipment through another network cable.

Further, the transmission method of the time synchronization signal provided in this embodiment of the present application may further include that the IPRAN device sends a time signal and a frequency signal to the base station, and the base station receives the time signal and the frequency signal and synchronizes its own time according to the time signal and the frequency signal.

The above-mentioned scheme provided by the embodiment of the present invention is introduced mainly from the perspective of the implementation principle of the transmission process of the time synchronization signal by the OTN device in the network. It is understood that, in order to implement the above functions, the OTN device includes a corresponding hardware structure and/or software module for performing each function. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present invention, the OTN device and the like may be divided into the functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module corresponding to each function, fig. 9 shows a transmission apparatus 90 for time synchronization signals provided in this embodiment of the application, which is used to implement the function of the OTN device in the foregoing embodiment. The transmission device 90 of the time synchronization signal may be an OTN device; alternatively, the transmission device 90 of the time synchronization signal may be deployed in an OTN device. As shown in fig. 9, the transmission device 90 of the time synchronization signal may include: a receiving unit 901 and a transmitting unit 902.

The receiving unit 901 may be configured to receive a time synchronization signal sent by a time server; the time synchronization signal includes a time signal and a frequency signal. For example, in conjunction with fig. 3, the receiving unit 901 is configured to execute S303 in fig. 3.

In a possible implementation manner, the receiving unit 901 may be specifically configured to receive the time synchronization signal through a service specific board.

In another possible implementation manner, the receiving unit 901 may be specifically configured to receive a time synchronization signal through a master clock board. For example, in conjunction with fig. 3, the sending unit 902 is configured to execute S304 in fig. 3.

The sending unit 902 may be configured to send a time synchronization signal to the IPRAN device.

In a possible implementation, the sending unit 902 may be specifically configured to send a time synchronization signal to the IPRAN device through a service specific board.

In another possible implementation manner, the sending unit 902 may be specifically configured to send a time synchronization signal to the IPRAN device through the master clock board.

In the case of using an integrated unit, as shown in fig. 10, an OTN device 100 provided in this embodiment of the present application is used to implement the functions of the OTN device in the above method. The OTN device 100 may include at least one processing module 1001 for implementing the functions of the OTN device in the embodiment of the present application.

The OTN device 100 may also include at least one memory module 1002 for storing program instructions and/or data. The storage module 1002 is coupled with the processing module 1001. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. The processing module 1001 may cooperate with the storage module 1002. The processing module 1001 may execute program instructions stored in the storage module 1002. At least one of the at least one memory module may be included in the processing module.

The OTN device 100 may further include a communication module 1003, configured to communicate with other devices through a transmission medium, so as to determine that the OTN device 100 may communicate with other devices. The communication module 1003 is used for the device to communicate with other devices. Illustratively, the processing module 1001 may perform S303 and S304 in fig. 3 using the communication module 1003.

In practical implementation, the receiving unit 901 and the sending unit 902 may be implemented by the processor 21 shown in fig. 2 calling the program code in the memory 22 and controlling the communication interface 23, and the specific implementation process may refer to the description of the transmission method portion of the time synchronization signal shown in fig. 3, and will not be described herein again.

As described above, the transmission apparatus 90 or the OTN device 100 of the time synchronization signal provided in the embodiment of the present application may be used to implement the function of the OTN device in the method implemented in the embodiments of the present application, and for convenience of description, only the portion related to the embodiment of the present application is shown, and details of the specific technology are not disclosed, please refer to the embodiments of the present application.

Another embodiment of the present application provides a transmission system of a time synchronization signal, where the transmission system may include a transmission device of the time synchronization signal, and the transmission device may implement the functions of the OTN device in the foregoing embodiments, for example, the transmission device of the time synchronization signal may be the OTN device described in the embodiment of the present application; alternatively, the transmission apparatus of the time synchronization signal may be deployed in the OTN device described in the embodiment of the present application.

Other embodiments of the present application provide a chip system, where the chip system includes a processor and may further include a memory, and is configured to implement the functions of the OTN device in the embodiment shown in fig. 3. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

Further embodiments of the present application also provide a computer-readable storage medium, which may include a computer program, when the computer program runs on a computer, the computer is caused to execute the steps performed by the OTN device in the embodiment shown in fig. 3.

Further embodiments of the present application also provide a computer program product, which contains a computer program, when the computer program product runs on a computer, the computer is caused to execute the steps executed by the OTN device in the embodiment shown in fig. 3.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A transmission method of time synchronization signals is characterized in that the transmission method is applied to Optical Transport Network (OTN) equipment, the OTN equipment is connected with a time server, and the OTN equipment is connected with Internet Protocol Radio Access Network (IPRAN) equipment; the transmission method comprises the following steps:

receiving a time synchronization signal sent by the time server; the time synchronization signal comprises a time signal and a frequency signal;

sending the time synchronization signal to the IPRAN device.

2. The transmission method according to claim 1, wherein the OTN device is connected to the time server through a specific service board, and the receiving the time synchronization signal sent by the time server includes:

receiving the time synchronization signal through the service specific board.

3. The transmission method according to claim 1, wherein the OTN device is connected to the time server through a master clock board, and the receiving the time synchronization signal sent by the time server includes:

and receiving the time synchronization signal through the master control clock board.

4. The transmission method according to any one of claims 1 to 3, wherein the OTN device is connected to the IPRAN device through a specific service board, and the sending the time synchronization signal to the IPRAN device comprises:

and sending the time synchronization signal to the IPRAN equipment through the service specific board.

5. The transmission method according to any one of claims 1 to 3, wherein the OTN device is connected to the IPRAN device through a master clock board, and the sending the time synchronization signal to the IPRAN device includes:

and sending the time synchronization signal to the IPRAN equipment through the master control clock board.

6. A transmission device of a time synchronization signal is characterized in that the transmission device is deployed in an Optical Transport Network (OTN) device, the OTN device is connected with a time server, and the OTN device is connected with an Internet Protocol Radio Access Network (IPRAN) device; the transmission device includes:

the receiving unit is used for receiving the time synchronization signal sent by the time server; the time synchronization signal comprises a time signal and a frequency signal;

a sending unit, configured to send the time synchronization signal to the IPRAN device.

7. The transmission apparatus according to claim 6, wherein the OTN device is connected to the time server through a specific service board, and the receiving unit is specifically configured to:

receiving the time synchronization signal through the service specific board.

8. The transmission apparatus according to claim 6, wherein the OTN device is connected to the time server through a master clock board, and the receiving unit is specifically configured to:

9. The transmission apparatus according to any one of claims 6 to 8, wherein the OTN device is connected to the IPRAN device through a specific service board, and the sending unit is specifically configured to:

10. The transmission apparatus according to any one of claims 6 to 8, wherein the OTN device is connected to the IPRAN device through a master clock board, and the sending unit is specifically configured to:

11. An optical transport network, OTN, device, comprising: a processor, a memory; the processor and the memory coupled for storing computer program code comprising computer instructions which, when executed by the OTN device, cause the OTN device to perform the method of transmission of time synchronization signals according to any of claims 1-5.

12. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of transmitting a time synchronization signal according to any one of claims 1 to 5.

13. A transmission system of time synchronization signals is characterized in that the transmission system comprises an Optical Transport Network (OTN) device; wherein, the OTN device is configured to perform the transmission method of the time synchronization signal according to any one of the above claims 1 to 5.