CN104683089A - A Time-Frequency Synchronization Fusion Network Architecture - Google Patents

Abstract

The invention provides a time frequency synchronization fusion network architecture, which comprises backbone network first-stage and second-stage time frequency synchronization nodes, a backbone network timing link, inter-provincial transmission networks, provincial transmission networks, prefecture and county transmission networks, intra-provincial network first-stage and second-stage time-frequency synchronization nodes and an intra-provincial network timing link, wherein all of the inter-provincial transmission networks realize the one-way connection through the backbone network timing link and the backbone network first-stage time frequency synchronization nodes or the backbone network second-stage time frequency synchronization nodes; the provincial transmission networks realize one-way connection through the intra-provincial network timing link and the intra-provincial network first-stage time-frequency synchronization nodes; the provincial transmission networks and the prefecture and county transmission networks realize one-way connection through the intra-provincial network timing link and the intra-provincial network first-stage time-frequency synchronization nodes or the intra-provincial second-stage time-frequency synchronization nodes; the prefecture and county transmission networks realize one-way connection through the intra-provincial network timing link and the intra-provincial network second-stage time-frequency synchronization nodes; the inter-provincial transmission networks are connected with the provincial transmission networks through the backbone network timing link, at least two intra-provincial network first-stage time-frequency synchronization nodes and the intra-provincial network timing link.

Description

A Time-Frequency Synchronization Fusion Network Architecture

technical field

The present invention relates to power communication technology, in particular to a time-frequency synchronization fusion network architecture.

Background technique

For power companies, whether it is the power grid itself or the power communication network as the basic support network, in order to ensure its safe and reliable operation, precise and stable frequency synchronization and time synchronization are required. Among them, the power communication network requires nE-12 magnitude Frequency accuracy and frequency synchronization of end-to-end 5μs level drift noise. Power grid protection, security control, automation and other systems require high-precision time synchronization up to μs level. Various network management systems, computer information systems and some communication equipment need Ordinary precision time synchronization on the order of ms.

The existing power network has established an independent frequency synchronization network to meet the requirements of frequency synchronization. For the requirements of time synchronization, satellite receivers are only deployed in substations to meet the requirements of time synchronization, and a unified ground timing synchronization network has not been formed. . In order to meet the requirements of frequency synchronization and time synchronization, the networking methods used are different, and the two are not considered uniformly, which will bring a series of problems, including repeated network construction, increased network operation and maintenance costs, and reduced network reliability. .

Contents of the invention

The main purpose of the embodiments of the present invention is to provide a time-frequency synchronization fusion network architecture, so as to realize the synchronization network network architecture of time synchronization and frequency synchronization fusion networking.

In order to achieve the above purpose, an embodiment of the present invention provides a time-frequency synchronization fusion network architecture, characterized in that, the time-frequency synchronization fusion network architecture includes: a backbone synchronization network and a plurality of provincial synchronization networks, the backbone synchronization network Connect to the multiple provincial synchronization networks respectively, wherein the backbone synchronization network includes: multiple backbone network primary time-frequency synchronization nodes, multiple backbone network secondary time-frequency synchronization nodes, multiple backbone network timing links and a plurality of inter-provincial transmission networks; each of the inter-provincial transmission networks is unidirectionally connected through the backbone network timing link and the first-level time-frequency synchronization node of the backbone network, or through the backbone network timing link and the backbone network Two-level time-frequency synchronization nodes are connected in one direction; the provincial synchronization network includes: provincial transmission network, multiple prefecture/county transmission networks, multiple provincial intranet first-level time-frequency synchronization nodes, multiple provincial intranet secondary A time-frequency synchronization node and a plurality of provincial intranet timing links; multiple provincial transmission networks are unidirectionally connected through the provincial intranet timing link and the first-level time-frequency synchronization node of the provincial intranet; the provincial One-way connection between the provincial transmission network and the prefecture/county transmission network through the timing link of the provincial intranet and the first-level time-frequency synchronization node of the provincial intranet, or through the timing link of the provincial intranet and the The secondary time-frequency synchronization node is unidirectionally connected; each of the prefecture/county transmission networks is connected through the provincial intranet timing link and the provincial intranet secondary time-frequency synchronous node unidirectionally; the inter-provincial transmission network is connected via The timing link of the backbone network is connected to at least two first-level time-frequency synchronization nodes of the provincial intranet, and the at least two first-level time-frequency synchronization nodes of the provincial intranet communicate with each other through the timing link of the provincial intranet. The provincial transmission network is connected; the first-level time-frequency synchronization node of the backbone network and the first-level time-frequency synchronization node of the provincial intranet are all provided with a reference time-frequency clock PRTC or a regional reference time-frequency clock LPRTC, and the reference The time-frequency clock PRTC produces a reference time-frequency clock signal, and the regional reference time-frequency clock LPRTC produces a regional reference time-frequency clock signal; Both are provided with a slave time-frequency clock STC, the slave time-frequency clock STC is used to receive the reference time-frequency clock signal or the regional reference time-frequency clock signal, and according to the reference time-frequency clock signal or the regional reference time-frequency clock signal The clock signal is generated from the time-frequency clock signal.

In one embodiment, the above-mentioned inter-provincial transmission network and provincial transmission network pass at least one first-level time-frequency synchronization node in the provincial intranet provided with the reference time-frequency clock PRTC and/or at least one with the regional reference The time-frequency clock LPRTC is connected to the first-level time-frequency synchronization node of the provincial intranet.

In one embodiment, the above-mentioned reference time-frequency clock PRTC includes two satellite receivers, a double rubidium clock time-frequency unit and a single or multiple cesium clocks, and the double rubidium clock time-frequency unit receives the output of the satellite receiver The first time-frequency signal and the first reference signal output by the cesium clock, generate and output the reference time-frequency including the first time signal and the first frequency signal according to the first time-frequency signal and the first reference signal clock signal.

In one embodiment, the above-mentioned regional reference time-frequency clock LPRTC includes two satellite receivers and a dual rubidium clock time-frequency unit, and the dual rubidium clock time-frequency unit receives the second time-frequency signal output by the satellite receiver , generating and outputting the regional reference time-frequency clock signal including a second time signal and a second frequency signal according to the second time-frequency signal.

In one embodiment, the first-level time-frequency synchronization node of the backbone network and the first-level time-frequency synchronization node of the provincial intranet provided with the regional reference time-frequency clock LPRTC both include a two-level cascade structure: LPRTC1 time-frequency synchronization node And the LPRTC2 time-frequency synchronization node, the LPRTC1 time-frequency synchronization node directly obtains the reference time-frequency clock signal from the reference time-frequency clock PRTC for synchronization; the LPRTC2 time-frequency synchronization node passes through the LPRTC1 time-frequency synchronization node The reference time-frequency clock signal is obtained from the reference time-frequency clock PRTC for synchronization.

In one embodiment, the above-mentioned slave time-frequency clock STC is provided with a rubidium clock or a crystal oscillator, and the slave time-frequency clock STC obtains the reference time-frequency clock signal from the reference time-frequency clock PRTC, and according to The reference time-frequency clock signal outputs the slave time-frequency clock signal including the third time signal and the third frequency signal, or, the slave time-frequency clock STC obtains the region from the regional reference time-frequency clock LPRTC a reference time-frequency clock signal, and output the slave time-frequency clock signal according to the regional reference time-frequency clock signal.

In one embodiment, the secondary time-frequency synchronization node of the backbone network and the secondary time-frequency synchronization node of the provincial intranet provided with the slave time-frequency clock STC both include a three-level cascade structure: STC1 time-frequency synchronization node, STC2 time-frequency synchronization node A frequency synchronization node and an STC3 time-frequency synchronization node, the STC1 time-frequency synchronization node directly obtains the reference time-frequency clock signal from the reference time-frequency clock PRTC for synchronization, or obtains it directly from the LPRTC1 time-frequency synchronization node The regional reference time-frequency clock signal is synchronized; the STC2 time-frequency synchronization node acquires the reference time-frequency clock signal from the reference time-frequency clock PRTC through the STC1 time-frequency synchronization node for synchronization, or the The STC1 time-frequency synchronization node acquires the regional reference time-frequency clock signal from the LPRTC1 time-frequency synchronization node for synchronization; the STC3 time-frequency synchronization node obtains the reference time-frequency clock PRTC from the STC2 time-frequency synchronization node Obtain the reference time-frequency clock signal for synchronization, or obtain the regional reference time-frequency clock signal from the LPRTC1 time-frequency synchronization node through the STC2 time-frequency synchronization node for synchronization.

In one embodiment, the reference time-frequency clock signal generated by the above-mentioned reference time-frequency clock PRTC is transmitted between the LPRTC1 time-frequency synchronization node, LPRTC2 time-frequency synchronization node, STC1 time-frequency synchronization node, STC2 time-frequency synchronization node and STC3 Time-frequency synchronization nodes are transmitted in one direction in the order of PRTC->LPRTC1->LPRTC2->STC1->STC2->STC3.

In an embodiment, the regional reference time-frequency clock signal generated by the above-mentioned regional reference time-frequency clock LPRTC is at the LPRTC1 time-frequency synchronization node, LPRTC2 time-frequency synchronization node, STC1 time-frequency synchronization node, and STC2 time-frequency synchronization node and STC3 time-frequency synchronization nodes are transmitted in one direction in the order of LPRTC1->LPRTC2->STC1->STC2->STC3.

The beneficial effect of the embodiments of the present invention is that, through the present invention, the unified transmission and distribution of time signals and frequency signals can be realized, safe, reliable, high-quality synchronous transmission of time and frequency can be provided, and the comprehensive construction cost of the entire network can be greatly saved. It facilitates unified operation and maintenance management, improves operation and maintenance management efficiency, and saves operation, maintenance and management costs.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

FIG. 1 is a schematic structural diagram of a time-frequency synchronization fusion network architecture according to an embodiment of the present invention;

2 is a schematic structural diagram of a reference time-frequency clock PRTC according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a regional reference time-frequency clock LPRTC according to an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

An embodiment of the present invention provides a time-frequency synchronization fusion network architecture. The present invention will be described in detail below in conjunction with the accompanying drawings.

The embodiment of the present invention provides a time-frequency synchronization fusion network architecture. As shown in Figure 1, the time-frequency synchronization fusion network architecture includes: a backbone synchronization network 1 and a plurality of intra-province synchronization networks 2, a backbone synchronization network 1 and a plurality of provincial synchronization networks The intrasynchronous nets 2 are connected separately.

The aforementioned backbone synchronization network 1 includes: multiple primary time-frequency synchronization nodes 11 of the backbone network, multiple secondary time-frequency synchronization nodes 12 of the backbone network, multiple backbone network timing links 13 and multiple inter-provincial transmission networks 14 . Wherein, as shown in Figure 1, among them a part of inter-provincial transmission network 14 is to be connected through above-mentioned backbone network timing link 13 and backbone network first-level time-frequency synchronization node 11 one-way connection; It is a one-way connection through the above-mentioned backbone network timing link 13 and the backbone network secondary time-frequency synchronization node 12.

Each primary time-frequency synchronization node 11 of the backbone network is provided with a reference time-frequency clock PRTC or a regional reference time-frequency clock LPRTC. Wherein, as shown in Figure 2, this reference time-frequency clock PRTC comprises two reference time-frequency satellite receivers, reference time-frequency double rubidium clock time-frequency units and single or multiple cesium clocks (shown in the figure is only a cesium clock clock, but in practical applications, a plurality of cesium clocks can also be set as required, the present invention is not limited to this), the reference time-frequency dual rubidium clock time-frequency unit receives the first time-frequency output from the above-mentioned reference time-frequency satellite receiver signal and the first reference signal output by the above-mentioned cesium clock, and generate a reference time-frequency clock signal comprising the first time signal and the first frequency signal according to the first time-frequency signal and the first reference signal, and the reference time-frequency clock signal The signal is output to the inter-provincial transmission network 14 connected to the primary time-frequency synchronization node 11 of the backbone network, and the reference time-frequency clock signal is transmitted to the backbone network connected to the inter-provincial transmission network 14 through the inter-provincial transmission network 14 The secondary time-frequency synchronization node 12 or the primary time-frequency synchronization node 11 of another backbone network.

As shown in Figure 3, the regional reference time-frequency clock LPRTC includes two regional reference time-frequency clock satellite receivers and a regional reference time-frequency dual rubidium clock time-frequency unit, and the regional reference time-frequency dual rubidium clock time-frequency unit receives the above-mentioned regional reference The second time-frequency signal output by the time-frequency clock satellite receiver generates a regional reference time-frequency clock signal including the second time signal and the second frequency signal according to the second time-frequency signal, and outputs the regional reference time-frequency clock signal to The inter-provincial transmission network 14 connected to the first-level time-frequency synchronization node 11 of the backbone network, and transmits the regional reference time-frequency clock signal to the second-level backbone network connected to the inter-provincial transmission network 14 through the inter-provincial transmission network 14 The time-frequency synchronization node 12 or another primary time-frequency synchronization node 11 of the backbone network.

Each backbone network secondary time-frequency synchronization node 12 is provided with a slave time-frequency clock STC, which is provided with a rubidium clock or a crystal oscillator, and the slave time-frequency clock STC obtains the reference time from the reference time-frequency clock PRTC frequency clock signal, the rubidium clock or crystal oscillator can generate a slave time-frequency clock signal including a third time signal and a third frequency signal according to the reference time-frequency clock signal, and output the slave time-frequency clock signal to the backbone network The inter-provincial transmission network 14 connected to the secondary time-frequency synchronization node 12, and the slave time-frequency clock signal is transmitted to another backbone network secondary time-frequency connected to the inter-provincial transmission network 14 through the inter-provincial transmission network 14 Synchronization node 12; Or, obtain regional reference time-frequency clock signal from regional reference time-frequency clock LPRTC from time-frequency clock STC, this rubidium clock or crystal oscillator can generate from time-frequency clock signal according to this regional reference time-frequency clock signal, and Output the slave time-frequency clock signal to the inter-provincial transmission network 14 connected to the backbone network secondary time-frequency synchronization node 12, and transmit the slave time-frequency clock signal to the inter-provincial transmission network through the inter-provincial transmission network 14 14 is connected to another secondary time-frequency synchronization node 12 of the backbone network.

The above-mentioned intra-provincial synchronization network 2 includes: a provincial transmission network 21, a plurality of ground/county transmission networks 22, a plurality of first-level time-frequency synchronization nodes 23 of a plurality of intra-provincial networks, a plurality of second-level time-frequency synchronization nodes 24 of a plurality of intra-provincial networks and Multiple timing links 25 in the provincial intranet.

As shown in Figure 1, between this provincial transmission network 21 and place/county transmission network 22, connect through this province intranet timing link 25 and provincial intranet first-level time-frequency synchronization node 23 one-way connection; The synchronization network 2 can also be unidirectionally connected through the timing link 25 of the provincial intranet and the secondary time-frequency synchronization node 24 of the provincial intranet.

When a plurality of provincial-level transmission networks 21 are set in the provincial synchronization network 2, the plurality of provincial-level transmission networks 21 are unidirectionally connected through the timing link 25 of the provincial intranet and the first-level time-frequency synchronization node 23 of the provincial intranet . And one part of the provincial transmission network 21 and the above-mentioned ground/county transmission network 22 are unidirectionally connected through the timing link 25 of the provincial intranet and the first-level time-frequency synchronization node 23 of the provincial intranet; A one-way connection is made through the timing link 25 of the provincial intranet and the secondary time-frequency synchronization node 24 of the provincial intranet.

In the intra-provincial synchronization network 2, the above-mentioned various prefecture/county transmission networks 22 are unidirectionally connected through the timing link 25 of the provincial intranet and the secondary time-frequency synchronization node 24 of the provincial intranet.

A reference time-frequency clock PRTC or a regional reference time-frequency clock LPRTC is set in each first-level time-frequency synchronization node 23 of the provincial intranet. Wherein, as shown in Figure 2, this reference time-frequency clock PRTC comprises two reference time-frequency satellite receivers, reference time-frequency double rubidium clock time-frequency units and single or multiple cesium clocks (shown in the figure is only a cesium clock clock, but in practical applications, a plurality of cesium clocks can also be set as required, the present invention is not limited to this), the reference time-frequency dual rubidium clock time-frequency unit receives the first time-frequency output from the above-mentioned reference time-frequency satellite receiver signal and the first reference signal output by the above-mentioned cesium clock, and generate a reference time-frequency clock signal comprising the first time signal and the first frequency signal according to the first time-frequency signal and the first reference signal, and the reference time-frequency clock signal The signal is output to the provincial transmission network 21 or the ground/county transmission network 22 connected with the first-level time-frequency synchronization node 23 of the provincial intranet, and the reference time-frequency clock is passed through the provincial transmission network 21 or the ground/county transmission network 22 The signal is transmitted to the provincial intranet secondary time-frequency synchronization node 24 or another provincial intranet primary time-frequency synchronization node 23 connected to the provincial transmission network 21 or prefectural/county transmission network 22 .

As shown in Figure 3, the above-mentioned regional reference time-frequency clock LPRTC includes two regional reference time-frequency clock satellite receivers and a regional reference time-frequency dual rubidium clock time-frequency unit, and the regional reference time-frequency dual rubidium clock time-frequency unit receives the above-mentioned regional The second time-frequency signal output by the reference time-frequency clock satellite receiver generates a regional reference time-frequency clock signal including the second time signal and the second frequency signal according to the second time-frequency signal, and outputs the regional reference time-frequency clock signal To the provincial transmission network 21 or the ground/county transmission network 22 connected with the first-level time-frequency synchronization node 23 of the provincial intranet, and the regional reference time-frequency clock signal by the provincial transmission network 21 or the ground/county transmission network 22 It is transmitted to the second-level time-frequency synchronization node 24 of the provincial intranet or the first-level time-frequency synchronization node 23 of another provincial intranet connected to the provincial transmission network 21 or the prefecture/county transmission network 22.

Secondary time-frequency synchronization node 24 of each provincial intranet is provided with a slave time-frequency clock STC, which is provided with a rubidium clock or a crystal oscillator in the slave time-frequency clock STC, and obtains a reference from the reference time-frequency clock PRTC from the time-frequency clock STC Time-frequency clock signal, the rubidium clock or crystal oscillator can generate a slave time-frequency clock signal including a third time signal and a third frequency signal according to the reference time-frequency clock signal, and output the slave time-frequency clock signal to the provincial The provincial transmission network 21 or the ground/county transmission network 22 that the intranet secondary time-frequency synchronization node 24 is connected to, and by this provincial transmission network 21 or the ground/county transmission network 22 will be transmitted from the time-frequency clock signal to the Another provincial intranet secondary time-frequency synchronization node 24 connected to the provincial transmission network 21 or the ground/county transmission network 22; or, obtain the regional reference time-frequency clock signal from the regional reference time-frequency clock LPRTC from the time-frequency clock STC, The rubidium clock or crystal oscillator can generate a slave time-frequency clock signal according to the regional reference time-frequency clock signal, and output the slave time-frequency clock signal to the provincial transmission network connected to the secondary time-frequency synchronization node 24 of the provincial intranet. Network 21 or place/county transmission network 22, and through this provincial transmission network 21 or place/county transmission network 22, the time-frequency clock signal will be transmitted to the time-frequency clock signal connected with this provincial transmission network 21 or place/county transmission network 22 Another secondary time-frequency synchronization node 24 in the intra-provincial network.

In order to ensure the safety and reliability of the entire time-frequency synchronization fusion network architecture, at least two first-level time-frequency synchronization nodes 23 of the provincial intranet are set in each provincial synchronization network 2. In this embodiment, two provincial synchronization nodes 23 are set. The network-level time-frequency synchronization node 23 is taken as an example, but the present invention is not limited thereto, and more than two provincial network-level time-frequency synchronization nodes 23 may also be set according to actual needs. One of the first-level time-frequency synchronization nodes 23 of the provincial intranet is provided with a reference time-frequency clock PRTC, and the other first-level time-frequency synchronization node 23 of the provincial intranet is provided with a regional reference time-frequency clock LPRTC1. The time-frequency clock PRTC should be set at the most important service site and transmission site in the province, and the regional reference time-frequency clock LPRTC1 should be set at the less important service site and transmission site. As shown in Figure 1, as the common reference time-frequency signal source of the backbone synchronization network 1 and the provincial synchronization network 2, the two levels of the backbone synchronization network 1 and the provincial synchronization network 2 will pass through the two levels in the provincial synchronization network 2. The first-level time-frequency synchronization nodes 23 of the provincial intranet are connected. Therefore, in essence, the backbone synchronization network 1 and the intra-provincial synchronization network 2 jointly contain the above-mentioned two first-level time-frequency synchronization nodes 23 of the provincial intranet. In addition, the synchronization networks 2 in each province remain relatively independent. Specifically, the inter-provincial transmission network 14 in the backbone synchronization network 1 is connected to the above-mentioned two first-level time-frequency synchronization nodes 23 of the provincial intranet through the backbone network timing link 13, and the above-mentioned two first-level time-frequency synchronization nodes of the provincial intranet The node 23 is connected to the provincial transmission network 22 through the regular link 25 of the provincial intranet.

Through the time-frequency synchronization fusion network architecture of the embodiment of the present invention, the unified transmission and distribution of time signals and frequency signals can be realized, safe, reliable, high-quality time and frequency synchronization transmission can be provided, and the comprehensive construction cost of the entire network can be greatly saved. It facilitates unified operation and maintenance management, improves operation and maintenance management efficiency, and saves operation, maintenance and management costs.

In practical applications, the above-mentioned first-level time-frequency synchronization node 11 of the backbone network provided with the regional reference time-frequency clock LPRTC and the first-level time-frequency synchronization node 23 of the provincial intranet can include a two-level cascade structure: LPRTC1 time-frequency synchronization node and LPRTC2 time-frequency synchronization node, wherein, the LPRTC1 time-frequency synchronization node directly obtains the reference time-frequency clock signal from the above-mentioned reference time-frequency clock PRTC for synchronization; The frequency clock PRTC obtains the reference time-frequency clock signal for synchronization.

And the above-mentioned secondary time-frequency synchronization node 12 of the backbone network with the secondary time-frequency clock STC and the secondary time-frequency synchronization node 24 of the provincial intranet can include a three-level cascade structure: STC1 time-frequency synchronization node, STC2 time-frequency Synchronization node and STC3 time-frequency synchronization node, wherein, the STC1 time-frequency synchronization node directly obtains the reference time-frequency clock signal from the reference time-frequency clock PRTC for synchronization, or directly obtains the regional reference time-frequency clock signal from the LPRTC1 time-frequency synchronization node for synchronization ; The STC2 time-frequency synchronization node obtains the reference time-frequency clock signal from the reference time-frequency clock PRTC through the STC1 time-frequency synchronization node for synchronization, or obtains the regional reference time-frequency clock signal from the LPRTC1 time-frequency synchronization node through the STC1 time-frequency synchronization node for synchronization ; The STC3 time-frequency synchronization node obtains the reference time-frequency clock signal from the reference time-frequency clock PRTC through the STC2 time-frequency synchronization node for synchronization, or obtains the regional reference time-frequency clock signal from the LPRTC1 time-frequency synchronization node through the STC2 time-frequency synchronization node for synchronization .

In the time-frequency synchronization fusion network architecture of the embodiment of the present invention, the transmitted time-frequency reference signal can only be transmitted in one direction from the top to the bottom, specifically, the reference time-frequency clock signal generated by the reference time-frequency clock PRTC in the LPRTC1 time-frequency One-way transmission between synchronization nodes, LPRTC2 time-frequency synchronization nodes, STC1 time-frequency synchronization nodes, STC2 time-frequency synchronization nodes and STC3 time-frequency synchronization nodes in the order of PRTC->LPRTC1->LPRTC2->STC1->STC2->STC3 . The STC1 time-frequency synchronization node can also directly obtain the reference time-frequency clock signal from the reference time-frequency clock PRTC, or directly obtain the regional reference time-frequency clock signal from the LPRTC1 time-frequency synchronization node.

During specific implementation, the transmission signal output by the upstream time-frequency synchronization device (the reference time-frequency clock PRTC that outputs the above-mentioned reference time-frequency clock signal or the regional reference time-frequency clock LPRTC that outputs the regional reference time-frequency clock signal) can be integrated with accurate The time-stamped 1588 message is called a time-frequency fusion signal. After the time-frequency fusion signal is carried and transmitted through the above-mentioned backbone network timing link 13 or provincial intranet timing link 25 using 1588 technology, the downstream time-frequency Synchronization equipment (regional reference time-frequency clock LPRTC or slave time-frequency clock STC receiving the time-frequency fusion signal) adopts UTI or 1588 technology. According to the time-frequency fusion signal, the time and frequency signals can be recovered at the same time to realize the upstream time-frequency Time-frequency synchronization between the synchronization device and the downstream time-frequency synchronization device.

The time-frequency synchronization fusion network architecture of the embodiment of the present invention adopts a two-layer architecture and a two-level hierarchical structure, wherein the two-layer architecture refers to two layers of "backbone time-frequency synchronization network and provincial time-frequency synchronization network", and the two-level hierarchical structure refers to, Whether it is the backbone time-frequency synchronization network or the provincial time-frequency synchronization network, it includes "first-level time-frequency synchronization nodes and second-level time-frequency synchronization nodes". Compared with the original three-layer architecture and three-level hierarchical structure, the advantages of adopting a two-layer architecture and a two-level hierarchical structure are: on the one hand, it is conducive to the planning of synchronization links, which can effectively shorten the length of extremely long timing links, and realize full synchronization. control of network drift indicators; on the other hand, it can reduce network layers, make the network interface clearer, and facilitate maintenance and management.

Those of ordinary skill in the art can understand that all or part of the steps in the methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM/RAM, disk , CD, etc.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (9)

1. a Time and Frequency Synchronization UNE framework, is characterized in that, described Time and Frequency Synchronization UNE framework comprises: key Synchronization Network and multiple Synchronization Network inside the province, and described key Synchronization Network is connected respectively with described multiple Synchronization Network inside the province, wherein,

Described key Synchronization Network comprises: multiple backbone network one-level Time and Frequency Synchronization node, multiple backbone network secondary Time and Frequency Synchronization node, many backbone network time links and multiple inter-provincial transmission network;

By described backbone network time link and the unidirectional connection of backbone network one-level Time and Frequency Synchronization node between each described inter-provincial transmission network, or by described backbone network time link and the unidirectional connection of backbone network secondary Time and Frequency Synchronization node;

Described Synchronization Network inside the province comprises: provincial transmission network, multiple/county's transmission network, multiple provinces Intranet one-level Time and Frequency Synchronization node, multiple provinces Intranet secondary Time and Frequency Synchronization node and Duo Tiao province Intranet time link;

By described province Intranet time link and the unidirectional connection of province's Intranet one-level Time and Frequency Synchronization node between multiple described provincial transmission network;

By described province Intranet time link and province's Intranet one-level Time and Frequency Synchronization node is unidirectional is connected between described provincial transmission network with described/county's transmission network, or by described province Intranet time link and economize the unidirectional connection of Intranet secondary Time and Frequency Synchronization node;

Each describedly/county's transmission network between by described province Intranet time link and the unidirectional connection of province's Intranet secondary Time and Frequency Synchronization node;

Described inter-provincial transmission network is connected with at least two described province Intranet one-level Time and Frequency Synchronization nodes by described backbone network time link, and described at least two described province Intranet one-level Time and Frequency Synchronization nodes are connected with described provincial transmission network by described province Intranet time link;

Reference time frequency clock PRTC or zonal basis time-frequency clock LPRTC is provided with in described backbone network one-level Time and Frequency Synchronization node and described province Intranet one-level Time and Frequency Synchronization node, described reference time frequency clock PRTC produces reference time frequency clock signal, and described zonal basis time-frequency clock LPRTC produces zonal basis time-frequency clock signal;

Be provided with from time-frequency clock STC in described backbone network secondary Time and Frequency Synchronization node and described province Intranet secondary Time and Frequency Synchronization node, described from time-frequency clock STC in order to receive described reference time frequency clock signal or zonal basis time-frequency clock signal, and to produce from time-frequency clock signal according to described reference time frequency clock signal or zonal basis time-frequency clock signal.

2. Time and Frequency Synchronization UNE framework according to claim 1, it is characterized in that, described inter-provincial transmission network and provincial transmission network are provided with province's Intranet one-level Time and Frequency Synchronization node of described reference time frequency clock PRTC and/or at least one province's Intranet one-level Time and Frequency Synchronization node connection being provided with described zonal basis time-frequency clock LPRTC by least one.

3. Time and Frequency Synchronization UNE framework according to claim 2, it is characterized in that, described reference time frequency clock PRTC comprises two the first satellite receiver, first pair of rubidium clock time frequency unit and single or multiple caesium clock, the first time frequency signal that first pair of described described first satellite receiver of rubidium clock time frequency unit reception exports and the first reference signal that described caesium clock exports, generate also output packet according to described first time frequency signal and the first reference signal and contain the described reference time frequency clock signal of very first time signal and first frequency signal.

4. Time and Frequency Synchronization UNE framework according to claim 3, it is characterized in that, described zonal basis time-frequency clock LPRTC comprises two the second satellite receiver and second pair of rubidium clock time frequency unit, second pair of described rubidium clock time frequency unit receives the second time frequency signal that described second satellite receiver exports, and generates also output packet contain the described zonal basis time-frequency clock signal of the second time signal and second frequency signal according to described second time frequency signal.

5. Time and Frequency Synchronization UNE framework according to claim 4, it is characterized in that, the described backbone network one-level Time and Frequency Synchronization node and the province's Intranet one-level Time and Frequency Synchronization node that are provided with described zonal basis time-frequency clock LPRTC all comprise two-stage cascade structure: LPRTC1 Time and Frequency Synchronization node and LPRTC2 Time and Frequency Synchronization node

Reference time frequency clock signal described in described LPRTC1 Time and Frequency Synchronization node directly obtains from described reference time frequency clock PRTC is carried out synchronously;

Described LPRTC2 Time and Frequency Synchronization node is carried out synchronously from the reference time frequency clock signal described in described reference time frequency clock PRTC acquisition by described LPRTC1 Time and Frequency Synchronization node.

6. Time and Frequency Synchronization UNE framework according to claim 5, it is characterized in that, described is provided with rubidium clock or crystal oscillator in time-frequency clock STC, described obtains described reference time frequency clock signal from time-frequency clock STC from described reference time frequency clock PRTC, and contain described in the 3rd time signal and the 3rd frequency signal from time-frequency clock signal according to described reference time frequency clock signal output packet, or, described obtains described zonal basis time-frequency clock signal from time-frequency clock STC from described zonal basis time-frequency clock LPRTC, and export described from time-frequency clock signal according to described zonal basis time-frequency clock signal.

7. Time and Frequency Synchronization UNE framework according to claim 6, it is characterized in that, be provided with the described backbone network secondary Time and Frequency Synchronization node from time-frequency clock STC and economize Intranet secondary Time and Frequency Synchronization node and all comprise three-stage cascade structure: STC1 Time and Frequency Synchronization node, STC2 Time and Frequency Synchronization node and STC3 Time and Frequency Synchronization node

Reference time frequency clock signal described in described STC1 Time and Frequency Synchronization node directly obtains from described reference time frequency clock PRTC is carried out synchronously, or the zonal basis time-frequency clock signal described in directly obtaining from described LPRTC1 Time and Frequency Synchronization node is carried out synchronously;

Described STC2 Time and Frequency Synchronization node is carried out synchronously from the reference time frequency clock signal described in described reference time frequency clock PRTC acquisition by described STC1 Time and Frequency Synchronization node, or carries out synchronously by described STC1 Time and Frequency Synchronization node from the zonal basis time-frequency clock signal described in described LPRTC1 Time and Frequency Synchronization node acquisition;

Described STC3 Time and Frequency Synchronization node is carried out synchronously from the reference time frequency clock signal described in described reference time frequency clock PRTC acquisition by described STC2 Time and Frequency Synchronization node, or is carried out synchronously from the zonal basis time-frequency clock signal described in described LPRTC1 Time and Frequency Synchronization node acquisition by described STC2 Time and Frequency Synchronization node.

8. Time and Frequency Synchronization UNE framework according to claim 7, it is characterized in that, the described reference time frequency clock signal that described reference time frequency clock PRTC produces presses the order one-way transmission of PRTC->LPRTC1->LPRTC2-GreatT. GreaT.GTSTC1->STC2->STC3 between described LPRTC1 Time and Frequency Synchronization node, LPRTC2 Time and Frequency Synchronization node, STC1 Time and Frequency Synchronization node, STC2 Time and Frequency Synchronization node and STC3 Time and Frequency Synchronization node.

9. Time and Frequency Synchronization UNE framework according to claim 7, it is characterized in that, the described zonal basis time-frequency clock signal that described zonal basis time-frequency clock LPRTC produces presses the order one-way transmission of LPRTC1->LPRTC2->STC1-GreatT. GreaT.GTSTC2->STC3 between described LPRTC1 Time and Frequency Synchronization node, LPRTC2 Time and Frequency Synchronization node, STC1 Time and Frequency Synchronization node, STC2 Time and Frequency Synchronization node and STC3 Time and Frequency Synchronization node.