CN218301654U - Optical module and 1588 time synchronization 5G communication network - Google Patents
Optical module and 1588 time synchronization 5G communication network Download PDFInfo
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- CN218301654U CN218301654U CN202222211734.7U CN202222211734U CN218301654U CN 218301654 U CN218301654 U CN 218301654U CN 202222211734 U CN202222211734 U CN 202222211734U CN 218301654 U CN218301654 U CN 218301654U
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Abstract
The utility model relates to an optical module and 1588 time synchronization's 5G communication network, wherein the optical module includes receiver unit and optical module unit; the receiver unit is provided with a signal input interface which is used for connecting an antenna; the receiver unit is connected with the optical module unit and used for recovering the time of a source satellite by using a satellite signal and generating a 1PPS pulse signal to be sent to the optical module unit when the recovered time is the whole second; the protocol conversion module is used for converting the current time second value of the receiver unit into a TOD protocol format signal and transmitting the TOD protocol format signal to the optical module unit when the recovery time of the receiver unit is the whole second; and the signal output interface of the optical module unit is used for connecting transmission equipment. The utility model discloses an optical module has small, with low costs advantage, can connect and be used as sinking source or 1588 probe on transmission equipment's GE interface.
Description
Technical Field
The utility model belongs to the technical field of 5G communication network's time synchronization, concretely relates to optical module, the utility model discloses still relate to a 1588 time synchronization's 5G communication network.
Background
In the current 5G communication network, 1588 time synchronization has become a mandatory feature for satisfying the 5G basic service of the base station, and the principle of the existing 1588 time synchronization 5G communication network is as follows: two BITS devices (communication building integrated timing supply systems) are deployed at a core layer to serve as 1588 servers, and accurate time is obtained by receiving aerial satellite signals (such as GPS or Beidou); then the BITS device transmits the adjusted time to the core device (such as PTN device) through 1588 message; the core equipment transmits the time to downstream equipment through 1588 messages, and the downstream equipment transmits the time to the downstream equipment step by step; and finally, the access equipment connected with the base station transmits the time to the 5G base station through a 1588 message, so that the time of each base station is synchronized to the time of the source satellite at last.
Therefore, 1588 time of all devices in the current network is synchronized to the two BITS devices, so that the requirement on the reliability of the BITS devices is high. Such as: in some large cities in China, 3 thousands of devices may exist in a network, and both the devices will be tracked. Moreover, when a certain device or a certain optical fiber in the network fails, it may affect switching of other very many devices 1588 paths, which is not favorable for network stability and fault location.
Therefore, in order to improve the reliability and the operation and maintenance of the network, it may be considered that 1588 time server devices for tracking the satellite sources are deployed in a plurality of places of the network, a 1588 time server (called as a sink source) is also deployed on the aggregation device, devices below the sink source preferentially track the sink source, and a core layer BITS is backed up and tracked; in addition, 1588 probe equipment can be deployed at some key nodes of the network and used for detecting 1588 performance indexes of the network in real time. The main function of the sink source device and the 1588 probe device is to track the satellite signals in the air and then provide accurate time performance to the transmission device. Therefore, the device forms of the sink source device and the 1588 probe device need to be comprehensively considered according to the network situation. The existing equipment usually directly deploys BITS equipment as a sinking source or 1588 probe equipment, but the BITS equipment has large volume, multiple functions and high cost, so that the equipment is not suitable for mass deployment.
SUMMERY OF THE UTILITY MODEL
In order to solve all or part of the above problems, an object of the present invention is to provide an optical module and 1588 time synchronization 5G communication network, wherein the optical module has advantages of small volume and low cost, and can be directly inserted into a transmission device, and used as a sinking source or 1588 probe of 1588 time synchronization 5G communication network.
According to an aspect of the present invention, there is provided an optical module, comprising a receiver unit, an optical module unit, and a protocol conversion module; wherein:
the receiver unit is provided with a signal input interface which is used for connecting an antenna;
the receiver unit is connected with the optical module unit and is used for acquiring satellite signals sent by the antenna, recovering the time of a source satellite according to the satellite time synchronization principle, and generating 1PPS pulse signals to send to the optical module unit when the recovered time is the whole second;
the receiver unit is connected with the optical module unit through the protocol conversion module, and the protocol conversion module is used for acquiring the recovery time of the receiver unit, converting the current time second value of the receiver unit into a TOD protocol format signal when the recovery time of the receiver unit is the whole second, and transmitting the TOD protocol format signal to the optical module unit;
the optical module unit is provided with a signal output interface, the signal output interface is used for connecting transmission equipment, and the optical module unit transmits the 1PPS pulse signal and the TOD protocol format signal to the transmission equipment through the signal output interface.
Further, the receiver unit is a GNSS receiver unit, and a signal input interface of the GNSS receiver unit is used for connecting to a GNSS antenna.
Further, the signal input interface of the GNSS receiver unit is an SMA interface.
Further, the optical module unit is an SFP optical module unit, the signal output interface is an SFP interface of the SFP optical module unit, and the SFP interface is used for connecting with a GE interface of the transmission device.
Further, a PIN4 and a PIN5 of the SFP interface are used for connecting with corresponding PINs of the GE interface of the transmission device;
the SFP optical module unit transmits a data signal of a TOD protocol format signal to the transmission equipment through a PIN4 PIN of the SFP interface;
and through a PIN5 PIN of the SFP interface, the SFP optical module unit transmits a clock signal of the TOD protocol format signal to the transmission equipment.
Further, a PIN8 of the SFP optical module unit is used to connect with a corresponding PIN of a GE interface of the transmission device, and the SFP optical module unit is used to transmit a time signal of a 1PPS pulse signal to the transmission device through the PIN8 of the SFP interface.
Further, the SFP interface of the SFP optical module unit is used for being connected with the GE interface of the transmission device in an inserting manner.
Further, the optical module includes an optical module body, and the optical module unit and the receiver unit are both disposed in the optical module body;
and one side of the optical module body is provided with a matching hole for the signal output interface of the optical module unit to extend out, and the other side of the optical module body is provided with a matching hole for the signal input interface of the receiver unit to extend out.
Further, the optical module unit is an eSFP optical module unit or an XFP optical module unit.
According to another aspect of the present invention, there is provided a 1588 time-synchronized 5G communication network, including any one of the above optical modules, wherein a signal output interface of the optical module unit is connected to a transmission device;
the optical module is used as a sinking source or a 1588 probe, tracks a satellite signal in the air, and transmits the time of the satellite signal to the transmission equipment.
According to the above technical scheme, the utility model provides a pair of 5G communication network of optical module and 1588 time synchronization has following beneficial effect:
the optical module of the utility model can obtain satellite time service, and transmit the satellite time service to the transmission equipment through the time signal of 1PPS pulse signal and the TOD protocol format signal;
the utility model discloses an optical module has small, with low costs advantage, can be used as the source of sinking or 1588 probe use on the GE interface of transmission equipment by the lug connection.
The utility model discloses 1588 time synchronization's 5G communication network can suit a large amount of deployments through using the optical module as sinking source or 1588 probe.
Drawings
Fig. 1 is a block diagram of an optical module according to an embodiment of the present invention;
the reference numbers in the figures are: the device comprises an antenna 1, a signal input interface 2, a receiver unit 3, a protocol conversion module 4, an optical module unit 5, a signal output interface 6, an optical module body 7, a GE interface 8 and transmission equipment 9.
Detailed Description
For better understanding of the purpose, structure and function of the present invention, the following description will be made in detail with reference to the accompanying drawings for a 5G communication network with optical module and 1588 time synchronization according to the present invention.
In order to facilitate understanding of the embodiments of the present invention, the following explains the acronyms appearing in the embodiments of the present invention as follows:
the TOD protocol is a serial time interface protocol, and generally, the TOD protocol can be called as long as the communication protocol comprises time information such as time, month, day, hour, minute and second; the 1PPS pulse signal is a pulse per second signal, namely, one pulse per second; the GNSS receiver refers to a receiver with a global navigation satellite system (global navigation satellite system is abbreviated as GNSS); the optical module is an optoelectronic device, the SFP optical module is an SFP packaged optoelectronic device, the eSFP optical module is a kilomega multi-mode optical module supporting DOM/DDM function, and the XFP optical module is a hot-pluggable optical transceiver independent of a communication protocol.
As shown in fig. 1, it illustrates an optical module according to an embodiment of the present invention, which includes a receiver unit 3, an optical module unit 5, and a protocol conversion module 4; wherein: the receiver unit 3 is provided with a signal input interface 2, the signal input interface 2 is used for connecting an antenna 1, so that satellite signals are received through the antenna 1, and the satellite signals received by the antenna 1 are sent to the receiver unit 3 through the signal input interface 2; the receiver unit 3 is connected to the optical module unit 5, and after the receiver unit 3 obtains the satellite signals transmitted through the antenna 1 and the signal input interface 2, the accurate time of the source satellite is restored according to the existing satellite time synchronization principle, and in addition, when the time after restoration is a whole second, the receiver unit 3 generates a 1PPS pulse signal and transmits the 1PPS pulse signal to the optical module unit 5; in addition to direct connection between the receiver unit 3 and the optical module unit 5, the receiver unit 3 is also connected to the optical module unit 5 through the protocol conversion module 4, it can be known that the receiver unit 3 can recover the accurate time of a source satellite, the protocol conversion module 4 is used for receiving the time recovered by the receiver unit 3, and when the time recovered by the receiver unit 3 is a whole second, the current time second value of the receiver unit 3 is converted into a TOD protocol format signal and transmitted to the optical module unit 5; therefore, the optical module unit 5 receives the 1PPS pulse signal and the TOD protocol format signal, the optical module unit 5 has a signal output interface 6, the signal output interface 6 of the optical module unit 5 is used for connecting a transmission device 9, and the optical module unit 5 transmits the 1PPS pulse signal and the TOD protocol format signal to the transmission device 9 through the signal output interface 6.
On the basis of the previous embodiment, in this embodiment, the receiver unit 3 is a GNSS receiver unit, and the signal input interface 2 of the GNSS receiver unit is used for connecting a GNSS antenna.
On the basis of the previous embodiment, in this embodiment, the optical module unit 5 is an SFP optical module unit, the signal output interface 6 is an SFP interface of the SFP optical module unit, and the SFP interface is used for being connected with the GE interface 8 of the transmission device 9. It is specific the SFP interface with for the convenient plug connection of plug between the GE interface 8 of transmission equipment 9, also will when needing the utility model discloses the SFP interface of optical module directly peg graft can on the GE interface 8 of transmission equipment 9, have convenient to use's advantage.
On the basis of the last embodiment, in this embodiment, the SFP interface of standard SFP optical module unit has 20 PIN feet, the embodiment of the present invention utilizes PIN4 foot and PIN5 foot among them to transmit TOD protocol format signals, utilizes PIN8 foot among them to transmit 1PPS pulse signals, wherein the standard definition of 20 PIN feet of the SFP interface of SFP optical module unit and the definition of the embodiment of the present invention are as shown in the following table one:
table one: standard definition of 20 PIN PINs of SFP interface and definition of the embodiment of the invention
Specifically, as shown in table one, PIN4 and PIN5 of the SFP interface are used to connect to corresponding PINs of the GE interface 8 of the transmission device 9, and through PIN4 of the SFP interface, the SFP optical module unit transmits a data signal of a TOD protocol format signal to the transmission device 9, and through PIN5 of the SFP interface, the SFP optical module unit transmits a clock signal of the TOD protocol format signal to the transmission device 9; the PIN8 of the SFP optical module unit is configured to be connected to a corresponding PIN of the GE interface 8 of the transmission device 9, and the SFP optical module unit is configured to transmit a time signal of a 1PPS pulse signal to the transmission device 9 through the PIN8 of the SFP interface.
In the foregoing embodiment, the 1PPS pulse signal and the TOD protocol format signal are transmitted to the transmission device 9 by the optical module unit 5, and the optical module unit 5 is specifically an SFP optical module unit, in this embodiment, the optical module unit 5 may also be another optical module unit, for example, the optical module unit 5 is an eSFP optical module unit or an XFP optical module unit.
On the basis of the previous embodiment, in this embodiment, the optical module includes an optical module body 7, and the optical module unit 5 and the receiver unit 3 are both disposed in the optical module body 7;
one side of the optical module body 7 is provided with a matching hole for extending the signal output interface 6 of the optical module unit 5, and the other side of the optical module body 7 is provided with a matching hole for extending the signal input interface 2 of the receiver unit 3.
On the basis of the previous embodiment, in this embodiment, the signal input interface 2 of the receiver unit is an SMA interface.
In addition, the embodiment of the utility model provides a 1588 time synchronization's 5G communication network is still provided, including above arbitrary optical module, optical module unit 5's signal output interface 6 is connected with transmission equipment 9;
the optical module is used as a sinking source or a 1588 probe to track a satellite signal in the air and transmit the time of the satellite signal to the transmission equipment 9.
In this embodiment, by using the optical module as the sinking source or the 1588 probe, compared with the existing case of using the 1588 time server as the sinking source or the 1588 probe, the optical module of this embodiment has the advantages of small volume and low cost, so that a large amount of deployment can be realized.
Secondly, the utility model discloses optical module is as sinking source and 1588 probe, can trail aerial satellite signal through signal input interface 2 and receiver unit 3 equally to signal output interface 6 through optical module unit 5 is connected with transmission equipment 9, provides accurate time performance for transmission equipment 9.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
Furthermore, the terms "a", "an", "two", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not intended to be limited to the particular embodiments disclosed herein, but rather to include all embodiments falling within the scope of the appended claims.
Claims (10)
1. An optical module, characterized by comprising a receiver unit, an optical module unit and a protocol conversion module; wherein:
the receiver unit is provided with a signal input interface which is used for connecting an antenna;
the receiver unit is connected with the optical module unit and used for acquiring satellite signals sent by the antenna, recovering the time of a source satellite according to the satellite time synchronization principle, and generating 1PPS pulse signals to send to the optical module unit when the recovered time is the whole second;
the receiver unit is connected with the optical module unit through the protocol conversion module, and the protocol conversion module is used for acquiring the recovery time of the receiver unit, converting the current time second value of the receiver unit into a TOD protocol format signal when the recovery time of the receiver unit is a whole second, and transmitting the TOD protocol format signal to the optical module unit;
the optical module unit is provided with a signal output interface, the signal output interface is used for connecting transmission equipment, and the optical module unit transmits the 1PPS pulse signal and the TOD protocol format signal to the transmission equipment through the signal output interface.
2. The optical module of claim 1, wherein the receiver unit is a GNSS receiver unit, and the signal input interface of the GNSS receiver unit is configured to connect to a GNSS antenna.
3. The optical module of claim 1, wherein the optical module unit is an SFP optical module unit, and the signal output interface is an SFP interface of the SFP optical module unit, and the SFP interface is configured to connect to a GE interface of the transmission device.
4. The optical module of claim 3, wherein PIN4 and PIN5 PINs of the SFP interface are used for connecting with corresponding PINs of a GE interface of the transmission device;
the SFP optical module unit transmits a data signal of a TOD protocol format signal to the transmission equipment through a PIN4 PIN of the SFP interface;
and the SFP optical module unit transmits the clock signal of the TOD protocol format signal to the transmission equipment through a PIN5 PIN of the SFP interface.
5. The optical module as claimed in claim 3, wherein PIN8 of the SFP optical module unit is configured to connect with a corresponding PIN of a GE interface of the transmission device, and the SFP optical module unit is configured to transmit a time signal of a 1PPS pulse signal to the transmission device through the PIN8 of the SFP interface.
6. The optical module of claim 3, wherein the SFP interface of the SFP optical module unit is configured to be plugged with a GE interface of the transmission device.
7. The optical module of claim 1, wherein the optical module comprises an optical module body, and the optical module unit and the receiver unit are both disposed within the optical module body;
and a matching hole for the signal output interface of the optical module unit to extend out is formed in one side of the optical module body, and a matching hole for the signal input interface of the receiver unit to extend out is formed in the other side of the optical module body.
8. The optical module of claim 1, wherein the signal input interface of the receiver unit is an SMA interface.
9. The optical module according to claim 1, characterized in that the optical module unit is an eSFP optical module unit or an XFP optical module unit.
10. A 1588 time-synchronized 5G communication network, comprising the optical module of any one of claims 1 to 9, wherein a signal output interface of the optical module unit is connected with a transmission device;
the optical module is used as a sinking source or a 1588 probe, tracks a satellite signal in the air and transmits the time of the satellite signal to the transmission equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222211734.7U CN218301654U (en) | 2022-08-22 | 2022-08-22 | Optical module and 1588 time synchronization 5G communication network |
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| CN202222211734.7U CN218301654U (en) | 2022-08-22 | 2022-08-22 | Optical module and 1588 time synchronization 5G communication network |
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| CN218301654U true CN218301654U (en) | 2023-01-13 |
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