CN111552170A

CN111552170A - GPS intelligent synchronous time service system

Info

Publication number: CN111552170A
Application number: CN202010447071.1A
Authority: CN
Inventors: 叶大为; 马雷; 余洪敏; 王天赐; 李国才
Original assignee: Anhui Tianyuan Communication Development Co ltd
Current assignee: Anhui Tianyuan Communication Development Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-08-18

Abstract

The invention discloses a GPS module, a Master clock server, a plurality of Slave clock servers, a plurality of BBU devices and a direct current transfer current power supply module, wherein the Master clock server is connected with the GPS module through a feeder line, the Slave clock server is connected with the Master clock server through a network cable, the BBU devices are connected with the Slave clock servers through network cables, and the direct current transfer current power supply module is used for supplying power to the Master clock servers and the Slave clock servers. The GPS antenna and the feeder line can be reduced by matching the Master clock server and the Slave clock server, the whole system only needs one set of GPS antenna and one feeder line, BBU equipment and GPS equipment do not need to be cascaded by a large number of feeder lines, the deployment is simple, the occupation of sky resources and machine room space can be greatly reduced, the maintenance and the expansion are convenient, the fault rate is effectively reduced, and the stable communication switching performance is ensured.

Description

GPS intelligent synchronous time service system

Technical Field

The invention belongs to the field of communication, and particularly relates to a GPS intelligent synchronous time service system.

Background

With the increase of the number of the stations, the pressure of station construction is increased, the radiation awareness of users to signal stations is high, and therefore the situation that some stations talk about points and enter the field is difficult, owners are hindered, and the site selection work is difficult abnormally. The BBU equipment is placed in a centralized mode, the radio frequency unit is located at a signal coverage point, and the control unit is placed in a centralized mode in a certain machine room, so that the problem of talking points is solved, centralized management of the BBU units is facilitated, and operation is facilitated. BBU equipment is installed in a centralized mode, and a GPS is also installed in a centralized mode, so that the problems that a large number of GPS antennas are needed to be installed in the same BBU pool machine room, a plurality of GPS cables are arranged, the roof resource installation is limited, the capacity expansion is difficult, GPS alarm exists, and switching indexes such as VoLTE are affected are solved. And a large number of BBU equipment GPS cascade, cause the fault point to increase, maintain unusual difficulty. In order to solve the problem of the current pain point of the GPS, a clock system is planned to be deployed for a BBU pool machine room, and a special GPS clock system is provided for equipment in the BBU pool machine room.

Disclosure of Invention

The invention aims to overcome the problems in the prior art, and provides the GPS intelligent synchronous time service system which is simple to deploy, can greatly reduce the occupation of the overhead resources and the machine room space, is convenient to maintain and expand, effectively reduces the fault rate, and ensures the stable communication switching performance.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

a GPS intelligent synchronous time service system comprises a GPS module, a Master clock server, a plurality of Slave clock servers, a plurality of BBU devices and a direct current transfer current power supply module, wherein the Master clock server is connected with the GPS module through a feeder line;

the GPS module comprises a receiver, a processor and a set of antennas, wherein the antennas are used for receiving time information in electric waves returned by the satellite to the receiver, the receiver transmits the received signals to the processor for analysis, and the processor is connected with the Master clock server through a feeder line and sends the processed GPS signals to the Master clock server;

the Master clock server is used for receiving GPS signals sent by the GPS module through a feeder line and transmitting the clock signals to the Slave clock server through a network cable, a plurality of Master ports are arranged on the Master clock server, the Master ports are used for receiving the GPS signals and converting the GPS signals into the clock signals, and finally the clock signals are transmitted to the Slave clock server through the network cable, and the Master ports adopt a full-modular plug-and-play structure and support hot plugging;

the Slave clock server is used for expanding the Master clock server and transmitting a received clock signal to the BBU equipment through network cable synchronous expansion, and a plurality of Slave ports are arranged on the Slave clock server and used for receiving and transmitting the clock signal.

Furthermore, the Master clock server adopts an Ethernet synchronization mode based on IEEE1588V2, adopts an advanced time frequency measurement and control technology and an intelligent discipline algorithm, and adopts a high-precision constant-temperature crystal oscillator for the crystal, so that the output signal of the time keeping circuit and the GPS satellite time reference keep precise synchronization and the influence caused by frequency deviation due to aging of the crystal oscillator is eliminated.

Further, the Master ports include twelve RJ45 ports and two SFP ports.

Further, the Master clock server precision is 0.03 ppm.

Furthermore, at least one Master port and at least one Slave port are reserved for debugging and detecting.

Furthermore, the Master clock server and the Slave clock server are fixedly connected with the direct current to alternating current power supply module through electric wires.

Further, the number of the feeders used is one.

Further, the BBU device is Hua is a BBU device or a Nokia BBU device.

The invention has the beneficial effects that:

the GPS antenna and the feeder line can be reduced by matching the Master clock server and the Slave clock server, the whole system only needs one set of GPS antenna and one feeder line, BBU equipment and GPS equipment do not need to be cascaded by a large number of feeder lines, the deployment is simple, the occupation of sky resources and machine room space can be greatly reduced, the maintenance and the expansion are convenient, the fault rate is effectively reduced, and the stable communication switching performance is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is an architectural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

The GPS intelligent synchronous time service system shown in fig. 1 includes a GPS module, a Master clock server, a plurality of Slave clock servers, a plurality of BBU devices, and a dc-to-ac power supply module, where the Master clock server is connected to the GPS module via a feeder line, the Slave clock server is connected to the Master clock server via a network line, the BBU devices are connected to the Slave clock server via a network line, the Master clock server and the plurality of Slave clock servers are connected to the dc-to-ac power supply module via electric wires, the dc-to-ac power supply module is configured to provide power for the Master clock server and the Slave clock server, and the BBU devices are BBU devices or nokia BBU devices;

the Master clock server is used for receiving GPS signals sent by a GPS module through a feeder line and transmitting the clock signals to the Slave clock server through a network cable, the Master clock server adopts an Ethernet synchronization mode based on IEEE1588V2, adopts accurate frequency measurement and an 'intelligent learning algorithm', adopts an advanced time frequency measurement and control technology and an intelligent discipline algorithm, a crystal adopts a high-precision constant temperature crystal oscillator for keeping the precision synchronization of time keeping circuit output signals and GPS satellite time reference and eliminating the influence caused by frequency deviation due to crystal oscillator aging, a Master port is arranged on the Master clock server and is used for receiving the GPS signals and converting the GPS signals into clock signals, finally the clock signals are transmitted to the Slave clock server through the network cable, the Master port comprises twelve RJ45 ports and two SFP ports, all the Master port adopts a full-modular plug-and play structure and supports hot plug and play, the configuration is flexible, the maintenance is convenient, at least one Master port is reserved for debugging and detecting work, the precision of a Master clock server is 0.03ppm, and the requirement of the clock precision of an FDD base station to be 0.05ppm is met;

the Slave clock server is used for expanding the Master clock server and transmitting a received clock signal to the BBU equipment through network cable synchronous expansion, a plurality of Slave ports are arranged on the Slave clock server and used for receiving and transmitting the clock signal, and at least one Slave port is reserved and used for debugging and detecting.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The utility model provides a synchronous time service system of GPS intelligence which characterized in that: the system comprises a GPS module, a Master clock server, a plurality of Slave clock servers, a plurality of BBU (base band unit) devices and a direct current to alternating current power supply module, wherein the Master clock server is connected with the GPS module through a feeder line;

2. The GPS intelligent synchronous time service system according to claim 1, wherein: the Master clock server adopts an Ethernet synchronization mode based on IEEE1588V2, adopts an advanced time frequency measurement and control technology and an intelligent discipline algorithm, and adopts a high-precision constant-temperature crystal oscillator for the crystal, so that the output signal of the time keeping circuit and the GPS satellite time reference keep precise synchronization and the influence caused by frequency deviation due to aging of the crystal oscillator is eliminated.

3. The GPS intelligent synchronous time service system according to claim 1, wherein: the Master ports include twelve RJ45 ports and two SFP ports.

4. The GPS intelligent synchronous time service system according to claim 1, wherein: the precision of the Master clock server is 0.03 ppm.

5. The GPS intelligent synchronous time service system according to claim 1, wherein: at least one Master port and at least one Slave port are reserved for debugging and detecting.

6. The GPS intelligent synchronous time service system according to claim 1, wherein: the Master clock server and the Slave clock server are fixedly connected with the direct current to alternating current power supply module through electric wires.

7. The GPS intelligent synchronous time service system according to claim 1, wherein: the number of the feeder lines is one.

8. The GPS intelligent synchronous time service system according to claim 1, wherein: the BBU equipment is Hua is BBU equipment or Nokia BBU equipment.