CN103166728A - Method and device of lock synchronization - Google Patents
Method and device of lock synchronization Download PDFInfo
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- CN103166728A CN103166728A CN 201110411295 CN201110411295A CN103166728A CN 103166728 A CN103166728 A CN 103166728A CN 201110411295 CN201110411295 CN 201110411295 CN 201110411295 A CN201110411295 A CN 201110411295A CN 103166728 A CN103166728 A CN 103166728A
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Abstract
The invention discloses a method and a device of lock synchronization. The method comprises the following steps: receiving clock synchronization message sent by a clock synchronization server, and judging whether to use the clock synchronization message to carry out the lock synchronization according to antenna feeder open circuit status carried in the clock synchronization message and locked satellite numbers of a receiver of the clock synchronization server. According to the method and the device of clock synchronization, the clock synchronization can be carried out accurately, and reliability of the clock synchronization is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method and device of clock synchronous.
Background technology
Digital communication network need to be realized the clock synchronous of each node, can realize by the 1PPS+TOD agreement.Time synchronized server (transmit leg) sends pulse per second (PPS) (1PPS) and time on date (Time Of Date, be called for short TOD) message (comprising time state message and temporal information message), the recipient receives and carries out respective handling after message and realize clock synchronous.
The TOD message has comprised the descriptor to 1PPS, comprises the information such as its fiducial time, a reference source.When a reference source is the satellite time transfer receivers such as GPS or the Big Dipper, also comprise GPS or the Beidou receiver antenna feeder information such as whether open a way.After receiving terminal receives the TOD message, whether be that open circuit judges whether the TOD message can be used for clock synchronous by the antenna feeder state information.When the antenna feeder state information was open circuit, the TOD message was not useable for clock synchronous.
In order to save installing space, by power splitter, a GPS or Beidou antenna are divided into two-way or multichannel sometimes, for a plurality of satellite receiver, as shown in Figure 1.Like this under the condition of power splitter isolated DC poor signal, can cause receiver to think the antenna feeder open circuit by mistake, and it is write the TOD message send to receiving terminal.Receiving terminal can think that this message is unavailable after receiving message and being resolved to the open circuit information of satellite receiver, thereby causes the clock synchronous failure, but in fact this message can be used for carrying out clock synchronous.
For making receiver think antenna feeder open circuit by mistake by by power splitter, a reference source reception antennas such as GPS or the Big Dipper being carried out shunt in correlation technique, and cause the problem of clock synchronous failure, not yet propose at present effective solution.
Summary of the invention
For power splitter, a reference source reception antenna is carried out shunt and make receiver think the antenna feeder open circuit by mistake, and cause the problem of clock synchronous failure, the invention provides a kind of clock synchronous scheme, to address the above problem at least.
According to an aspect of the present invention, provide a kind of method of clock synchronous, having comprised: the clock synchronous message that the time of reception synchronization server sends; Locking satellite number according to the receiver of the antenna feeder open-circuit condition that carries in the clock synchronous message and time synchronized server judges whether to utilize above-mentioned clock synchronous message to carry out clock synchronous.
Preferably, locking satellite number according to the receiver of the antenna feeder open-circuit condition that carries in above-mentioned clock synchronous message and time synchronized server, judge whether to utilize above-mentioned clock synchronous message to carry out clock synchronous, comprise: above-mentioned antenna feeder state for the open circuit and above-mentioned locking satellite number greater than 0, utilize above-mentioned clock synchronous message to carry out clock synchronous; Perhaps, above-mentioned antenna feeder state is that open circuit and above-mentioned locking satellite number equal 0, and the above-mentioned clock synchronous message of unfavorable use carries out clock synchronous.
Preferably, above-mentioned clock synchronous message comprises: date time T OD message.
According to a further aspect in the invention, provide a kind of time service method of clock synchronous, having comprised: received the clock synchronization information that a reference source sends; Transmission comprises the clock synchronous message of above-mentioned clock synchronization information, and wherein, the information of carrying in above-mentioned clock synchronous message comprises: the locking satellite number of the receiver of antenna feeder open-circuit condition and time synchronized server.
Preferably, above-mentioned clock synchronous message comprises: date time T OD message.
Preferably, above-mentioned locking satellite number is described by reserved field in above-mentioned TOD message.
In accordance with a further aspect of the present invention, provide a kind of device of clock synchronous, having comprised: receiver module is used for the clock synchronous message that the time of reception synchronization server sends; Judge module is used for the locking satellite number of the receiver of the antenna feeder open-circuit condition that carries according to above-mentioned clock synchronous message and time synchronized server, judges whether to utilize above-mentioned clock synchronous message to carry out clock synchronous.
Preferably, above-mentioned judge module is according to the locking satellite number of the receiver of the antenna feeder open-circuit condition that carries in above-mentioned clock synchronous message and time synchronized server, judge whether to utilize described clock synchronous message to carry out clock synchronous, comprise: above-mentioned antenna feeder state for the open circuit and above-mentioned locking satellite number greater than 0, utilize above-mentioned clock synchronous message to carry out clock synchronous; Perhaps above-mentioned antenna feeder state is that open circuit and above-mentioned locking satellite number equal 0, and the above-mentioned clock synchronous message of unfavorable use carries out clock synchronous.
In accordance with a further aspect of the present invention, provide a kind of time service device of clock synchronous, having comprised: receiver module is used for receiving the clock synchronization information that a reference source sends; Sending module is used for sending the clock synchronous message that comprises above-mentioned clock synchronization information, and wherein, the information of carrying in above-mentioned clock synchronous message comprises: the locking satellite number of the receiver of antenna feeder open-circuit condition and time synchronized server.
Preferably, above-mentioned clock synchronous message comprises: date time T OD message, above-mentioned locking satellite number is described by reserved field in above-mentioned TOD message.
By the present invention, utilize the locking satellite number of the receiver of the open-circuit condition of the antenna feeder that carries in the clock synchronous message and time synchronized server, judge whether to utilize this clock synchronous message to carry out clock synchronous, when having avoided an a reference source reception antenna to be divided into two-way or multichannel for a plurality of satellite receiver, because thinking that the antenna feeder open circuit causes the problem of clock synchronous failure by mistake, according to the more fully operating state of carrying in the clock synchronous message, can judge more accurately the availability of message, and then carry out accurately clock synchronous.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the clock synchronization system of correlation technique;
Fig. 2 is the flow chart according to the method for the clock synchronous of the embodiment of the present invention;
Fig. 3 is the structured flowchart according to the device of the clock synchronous of the embodiment of the present invention;
Fig. 4 is the flow chart according to the time service method of the clock synchronous of the embodiment of the present invention;
Fig. 5 is the structured flowchart according to the time service device of the clock synchronous of the embodiment of the present invention.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
Fig. 2 is the flow chart according to the method for the clock synchronous of the embodiment of the present invention, and as shown in Figure 2, the method comprises following step (step S202-step S204):
Step S202, the clock synchronous message that the time of reception synchronization server sends.
The clock synchronous server can be to the node tranmitting data register sync message in network, and node is resolved the clock synchronous message that receives, and completes clock synchronous according to resolving the information of carrying in gained clock synchronous message.For example, in system as shown in Figure 1, time synchronized server 106 can to digital communication network node 108 tranmitting data register sync messages, after digital communication network node 108 receives the clock synchronous message, carry out corresponding the processing and realize clock synchronous.In a preferred implementation of the embodiment of the present invention, the clock synchronous message that receives can be the TOD message.Preferably, the clock synchronous message can comprise: the locking satellite number of the receiver of antenna feeder open-circuit condition and time synchronized server.Wherein, the TOD message comprises temporal information message packet and time state message packet, because the antenna feeder open-circuit condition is carried in the time state message packet, therefore, in one of the embodiment of the present invention more excellent execution mode, above-mentioned clock synchronous message can be the time state message packet.
Step S204 judges whether to utilize this clock synchronous message to carry out clock synchronous according to the locking satellite number of the receiver of the antenna feeder open-circuit condition that carries in the clock synchronous message and time synchronized server.
In actual applications, a reference source reception antenna can be divided into two-way or multichannel, for a plurality of satellite receiver.For example, in system as shown in Figure 1, a reference source can be GPS or Beidou receiver, a GPS or Beidou antenna can be divided into two-way or multichannel by power splitter 104, for a plurality of time synchronized servers (comprising satellite receiver) 106.In the situation that this, when judging whether to utilize the clock synchronous message that receives to carry out clock synchronous, can judge according to the locking satellite number of the receiver of the open-circuit condition of satellite receiver antenna feeder and time synchronized server.For example, if in the TOD message, the antenna feeder mode field is shown as open circuit, but the satellite number of locking thinks that greater than 0 the satellite receiver antenna feeder do not open a way, and this message can be used to carry out clock synchronous; If in the TOD message, the antenna feeder mode field is shown as open circuit, and the satellite number of locking is 0, thinks that open circuit appears in the satellite receiver antenna feeder, and this message is not useable for clock synchronous.
In a preferred implementation of the embodiment of the present invention, judge whether to utilize this clock synchronous message to carry out clock synchronous according to the locking satellite number of the receiver of the antenna feeder open-circuit condition that carries in the clock synchronous message and time synchronized server, can comprise: the antenna feeder state for the open circuit and the locking satellite number greater than 0, utilize described clock synchronous message to carry out clock synchronous; Perhaps, the antenna feeder state equals 0 for open circuit and locking satellite number, unfavorablely carries out clock synchronous with the clock sync message.By this preferred implementation, the node in network can correctly effectively judge whether to utilize the clock synchronous message that receives to carry out clock synchronous.
pass through the embodiment of the present invention, utilize the locking satellite number of the receiver of the open-circuit condition of the antenna feeder that carries in the clock synchronous message and time synchronized server, judge whether to utilize this clock synchronous message to carry out clock synchronous, when having avoided an a reference source reception antenna (as GPS or Big Dipper reception antenna) to be divided into two-way or multichannel for a plurality of satellite receiver, because thinking that the antenna feeder open circuit causes the problem of clock synchronous failure by mistake, according to the more fully operating state of carrying in the clock synchronous message, can judge more accurately the availability of message, and then carry out accurately clock synchronous.
According to the embodiment of the present invention, a kind of device of clock synchronous also is provided, this device can but the method for the clock synchronous that is not limited to realize that the above embodiment of the present invention provides.
Fig. 3 is the structured flowchart according to the device of the clock synchronous of the embodiment of the present invention, and as shown in Figure 3, this device comprises: receiver module 302 and judge module 304.Wherein, receiver module 302 is used for the clock synchronous message that the time of reception synchronization server sends; Judge module 304 is coupled with receiver module 302, and the locking satellite number that is used for the receiver of the antenna feeder open-circuit condition that carries according to the clock synchronous message and time synchronized server judges whether to utilize this clock synchronous message to carry out clock synchronous.
Pass through the embodiment of the present invention, the clock synchronous message that receiver module 302 time of reception synchronization servers send, the locking satellite number of the antenna feeder open-circuit condition that carries in the clock synchronous message that judge module 304 receives according to receiver module 302 and the receiver of time synchronized server, judge whether to utilize this clock synchronous message to carry out clock synchronous, can judge more accurately the availability of message, and then carry out accurately clock synchronous.
In a preferred implementation of the embodiment of the present invention, judge module 304 is according to the locking satellite number of the receiver of the antenna feeder open-circuit condition that carries in the clock synchronous message and time synchronized server, judge whether to utilize described clock synchronous message to carry out clock synchronous, can comprise: the antenna feeder state for the open circuit and described locking satellite number greater than 0, utilize described clock synchronous message to carry out clock synchronous; And the antenna feeder state is that open circuit and locking satellite number equal 0, does not utilize described clock synchronous message to carry out clock synchronous.By this preferred implementation, the node in network can correctly effectively judge whether to utilize the clock synchronous message that receives to carry out clock synchronous.
The device of the clock synchronous of the embodiment of the present invention, can but be not limited to be arranged in the clock synchronous server as logical functional entity.In actual applications, also can be with this device as the functional entity individualism.
According to the embodiment of the present invention, a kind of time service method of clock synchronous also is provided, the method can but be not limited to for to the time service of clock synchronous server.
Fig. 4 is the flow chart according to the time service method of the clock synchronous of the embodiment of the present invention, and as shown in Figure 4, the method comprises following step (step S402-step S404):
Step S402 receives the clock synchronization information that a reference source sends.
In above-mentioned steps S402, different systems can utilize different a reference source, and for example, in system as shown in Figure 1, a reference source can be the satellite time service systems such as GPS or the Big Dipper.
Step S404 sends the clock synchronous message that comprises above-mentioned clock synchronization information, and wherein, the information of carrying in this clock synchronous message comprises: the locking satellite number of the receiver of antenna feeder open-circuit condition and time synchronized server.
In a preferred implementation of the embodiment of the present invention, comprise the clock synchronous message of clock synchronization information, can but to be not limited to be the TOD message.For example, the TOD message can comprise the descriptor to 1PPS, with and the information such as fiducial time, a reference source; When a reference source is the satellite time service systems such as GPS or the Big Dipper, can also comprise GPS or the Beidou receiver antenna feeder information such as whether open a way.
In actual applications, a GPS or Big Dipper reception antenna can be divided into two-way or multichannel, for a plurality of satellite receiver.For example, in system as shown in Figure 1, can a GPS or Beidou antenna be divided into two-way or multichannel by power splitter 104, for a plurality of time synchronized servers (comprising satellite receiver) 106.For can with time dissemination system more fully work state information feed back to receiving terminal (being the node in network), in a preferred implementation of the embodiment of the present invention, a reservation (reserved) field that can choose in the time state message (type of message is numbered 0x010x03) of TOD message is described above-mentioned locking satellite number, preferably, the reserved field in also can informational message access time (type of message is numbered 0x010x020) is described the locking satellite number.By this preferred implementation, in the node time service, can be for more fully operating state of time dissemination system be provided.
According to the embodiment of the present invention, a kind of time service device of clock synchronous also is provided, this device can but be not limited to time service method be used to the clock synchronous of realizing the above embodiment of the present invention.
Fig. 5 is the structured flowchart according to the time service device of the clock synchronous of the embodiment of the present invention, and as shown in Figure 5, this device comprises: receiver module 502 and sending module 504.Wherein, receiver module 502 is used for receiving the clock synchronization information that a reference source sends, and a reference source can be GPS or big-dipper satellite, so receiver module 502 also can be called GPS/ big-dipper satellite receiver module; Sending module 504 is coupled with receiver module 502, is used for sending the clock synchronous message that comprises clock synchronization information, and wherein, the information of carrying in this clock synchronous message comprises: the locking satellite number of the receiver of antenna feeder open-circuit condition and time synchronized server.
Pass through the embodiment of the present invention, the information of carrying in the clock synchronous message that sending module 504 sends comprises: the locking satellite number of the receiver of antenna feeder open-circuit condition and time synchronized server, thereby in the node time service in network, can be for more fully operating state of time dissemination system be provided, node can judge whether to utilize the clock synchronous message to carry out clock synchronous more accurately.
In a preferred implementation of the embodiment of the present invention, the clock synchronous message can but to be not limited to be the TOD message, wherein, the TOD message comprises temporal information message packet and time state message packet, because the antenna feeder open-circuit condition is carried in the time state message packet, therefore, in one of the embodiment of the present invention more excellent execution mode, above-mentioned clock synchronous message can be the time state message packet.For the ease of the locking satellite number is described, above-mentioned locking satellite number can be described by reserved field in the time state message packet.By this preferred implementation, make the description of locking satellite number realize simple.
The time service device of the clock synchronous of the embodiment of the present invention, can but be not limited to be present in the time synchronized server as logical functional entity, also can be used as the functional entity individualism.
Be described below by specific embodiment.
Embodiment one
In system as shown in Figure 1, pulse per second (PPS) 1PPS and TOD message that the node 108 time of reception synchronization servers 106 of digital communication network send, use the information of carrying in the time state message in the TOD message to judge whether that available this TOD message carries out clock synchronous, wherein, the primitive frame form of time state message packet is as shown in table 1.
Table 1 time state message primitive frame form
In embodiments of the present invention, can access time in status message TOD (type of message numbering 0x01 0x03) reserved field the locking satellite number of time synchronized server satellite receiver is described, the node 108 of digital communication network judges whether that according to the locking satellite number of antenna feeder open-circuit condition and time synchronized server satellite receiver available this TOD message carries out clock synchronous.
For example, can describe for an initial byte (as shown in table 2) with load side-play amount 5.
Table 1 time state message is improved frame format one
Perhaps, in embodiments of the present invention, also can describe for an initial byte (as shown in table 3) with load side-play amount 6.
Table 2 time state message is improved frame format two
from above description, can find out, the present invention has realized following technique effect: the locking satellite number that utilizes the receiver of the open-circuit condition of the antenna feeder that carries in the clock synchronous message and time synchronized server, judge whether to utilize this clock synchronous message to carry out clock synchronous, when having avoided an a reference source reception antenna to be divided into two-way or multichannel for a plurality of satellite receiver, because thinking that the antenna feeder open circuit causes the problem of clock synchronous failure by mistake, according to the more fully operating state of carrying in the clock synchronous message, can judge more accurately the availability of message, and then carry out accurately clock synchronous, improved the reliability of clock synchronous.Simultaneously, utilize a reserved field to describe the locking satellite number in the TOD message, make the present invention realize simply having very strong practicality.
obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step being made into the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the method for a clock synchronous, is characterized in that, comprising:
The clock synchronous message that the time of reception synchronization server sends;
Locking satellite number according to the receiver of the antenna feeder open-circuit condition that carries in described clock synchronous message and described time synchronized server judges whether to utilize described clock synchronous message to carry out clock synchronous.
2. method according to claim 1, it is characterized in that, locking satellite number according to the receiver of the antenna feeder open-circuit condition that carries in described clock synchronous message and described time synchronized server judges whether to utilize described clock synchronous message to carry out clock synchronous, comprising:
Described antenna feeder state for the open circuit and described locking satellite number greater than 0, utilize described clock synchronous message to carry out clock synchronous; Perhaps
Described antenna feeder state is that open circuit and described locking satellite number equal 0, does not utilize described clock synchronous message to carry out clock synchronous.
3. method according to claim 1 and 2, is characterized in that, described clock synchronous message comprises: date time T OD message.
4. the time service method of a clock synchronous, is characterized in that, comprising:
Receive the clock synchronization information that a reference source sends;
Transmission comprises the clock synchronous message of described clock synchronization information, and wherein, the information of carrying in described clock synchronous message comprises: the locking satellite number of the receiver of antenna feeder open-circuit condition and time synchronized server.
5. method according to claim 4, is characterized in that, described clock synchronous message comprises: date time T OD message.
6. method according to claim 5, is characterized in that, described locking satellite number is described by reserved field in described TOD message.
7. the device of a clock synchronous, is characterized in that, comprising:
Receiver module is used for the clock synchronous message that the time of reception synchronization server sends;
Judge module is used for the locking satellite number of the receiver of the antenna feeder open-circuit condition that carries according to described clock synchronous message and described time synchronized server, judges whether to utilize described clock synchronous message to carry out clock synchronous.
8. device according to claim 7, it is characterized in that, described judge module judges whether to utilize described clock synchronous message to carry out clock synchronous according to the locking satellite number of the receiver of the antenna feeder open-circuit condition that carries in described clock synchronous message and described time synchronized server, comprising:
Described antenna feeder state for the open circuit and described locking satellite number greater than 0, utilize described clock synchronous message to carry out clock synchronous; Perhaps
Described antenna feeder state is that open circuit and described locking satellite number equal 0, does not utilize described clock synchronous message to carry out clock synchronous.
9. the time service device of a clock synchronous, is characterized in that, comprising:
Receiver module is used for receiving the clock synchronization information that a reference source sends;
Sending module is used for sending the clock synchronous message that comprises described clock synchronization information, and wherein, the information of carrying in described clock synchronous message comprises: the locking satellite number of the receiver of antenna feeder open-circuit condition and time synchronized server.
10. device according to claim 9, is characterized in that, described clock synchronous message comprises: date time T OD message, described locking satellite number is described by reserved field in described TOD message.
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| CN 201110411295 CN103166728A (en) | 2011-12-12 | 2011-12-12 | Method and device of lock synchronization |
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| CN 201110411295 CN103166728A (en) | 2011-12-12 | 2011-12-12 | Method and device of lock synchronization |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017045474A1 (en) * | 2015-09-16 | 2017-03-23 | 中兴通讯股份有限公司 | Message parsing method and apparatus |
| CN114114891A (en) * | 2021-11-30 | 2022-03-01 | 国网辽宁省电力有限公司葫芦岛供电公司 | double-Beidou satellite synchronous clock system and method |
| CN115047938A (en) * | 2022-08-12 | 2022-09-13 | 浙江大学 | Clock synchronization method, system, electronic device and computer readable storage medium |
-
2011
- 2011-12-12 CN CN 201110411295 patent/CN103166728A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017045474A1 (en) * | 2015-09-16 | 2017-03-23 | 中兴通讯股份有限公司 | Message parsing method and apparatus |
| CN106549904A (en) * | 2015-09-16 | 2017-03-29 | 中兴通讯股份有限公司 | The method and device of packet parsing |
| CN106549904B (en) * | 2015-09-16 | 2020-12-29 | 中兴通讯股份有限公司 | Message parsing method and device |
| CN114114891A (en) * | 2021-11-30 | 2022-03-01 | 国网辽宁省电力有限公司葫芦岛供电公司 | double-Beidou satellite synchronous clock system and method |
| CN114114891B (en) * | 2021-11-30 | 2023-09-08 | 国网辽宁省电力有限公司葫芦岛供电公司 | Double Beidou satellite synchronous clock system and method |
| CN115047938A (en) * | 2022-08-12 | 2022-09-13 | 浙江大学 | Clock synchronization method, system, electronic device and computer readable storage medium |
| CN115047938B (en) * | 2022-08-12 | 2022-11-04 | 浙江大学 | Clock synchronization method, system, electronic device and computer readable storage medium |
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Application publication date: 20130619 |