CN105119675A - Target device synchronization method and synchronization system - Google Patents
Target device synchronization method and synchronization system Download PDFInfo
- Publication number
- CN105119675A CN105119675A CN201510368122.0A CN201510368122A CN105119675A CN 105119675 A CN105119675 A CN 105119675A CN 201510368122 A CN201510368122 A CN 201510368122A CN 105119675 A CN105119675 A CN 105119675A
- Authority
- CN
- China
- Prior art keywords
- target device
- object equipment
- clock synchronous
- out clock
- carry out
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention provides a target device synchronization method and synchronization system. A first target device and a source device clock carry out clock synchronization, wherein the source device is a sender of data packets and the first target device is one of receivers of data packets. After the first target device and the source device carry out clock synchronization, a second target device and the first target device carry out clock synchronization, and the second target device is also a receiver of data packets. Thus, when a plurality of target devices receiving data packets from the source device exist, the target devices receiving data packets can achieve clock synchronization with the source device, namely, clock synchronization of a plurality of target devices can be achieved. In addition, because the plurality of target devices can carry out synchronization automatically and participation of a transmission network is not needed, when the plurality of target devices receive the data packets through a packet transmission network, synchronization of the plurality of target devices can be still achieved.
Description
Technical field
The application relates to the communications field, particularly relates to a kind of synchronous method and synchro system of target device.
Background technology
In modern communications, there is following demand: the source device sending data needs same data to be sent to multiple target device, multiple target device needs synchronous these data of forwarding.
In order to meet the demand of the synchronous forwarding data of multiple target device, need to realize strict clock synchronous between multiple target device.At present, use time multiplexed transmission network, namely can realize the stringent synchronization between multiple target device.
But in order to improve the efficiency of transmission of network, packet transmission networks is disposed on a large scale, because packet transmission networks is different from the transmission principle of time multiplexed transmission network, therefore, how the multiple target devices in packet transmission networks realize synchronously, becoming current problem demanding prompt solution.
Summary of the invention
This application provides a kind of synchronous method and synchro system of target device, object is to solve the synchronous problem of the multiple target devices how realized in packet transmission networks.
To achieve these goals, this application provides following technical scheme:
A synchronous method for target device, comprising:
First object equipment and source device carry out clock synchronous, and described source device is the transmit leg of packet, and described first object equipment is one of recipient of described packet;
Second target device and described first object equipment carry out clock synchronous, and described second target device is the recipient of described packet.
Alternatively, when the quantity of described second target device is multiple, described second target device and described first object equipment carry out clock synchronous and comprise:
Each second target device all carries out clock synchronous with described first object equipment.
Alternatively, when the quantity of described second target device is multiple, described second target device and described first object equipment carry out clock synchronous and comprise:
Target device X and described first object equipment carry out clock synchronous, and described target device X is any one in described second target device;
Miscellaneous equipment in described second target device and described target device X carry out clock synchronous.
Alternatively, described first object equipment and/or described second target device are radio-frequency nodes;
Described source device is the superior node of described radio-frequency nodes.
Alternatively, described radio-frequency nodes is communicated by public general radio frequency interface CPRI interface with the superior node of described radio-frequency nodes.
Alternatively, described source device sends described packet by Ethernet to described first object equipment and/or described second target device.
A kind of synchro system, comprising:
First object equipment, for carrying out clock synchronous with source device, described source device is the transmit leg of packet, and described first object equipment is one of recipient of described packet;
Second target device, for carrying out clock synchronous with described first object equipment, described second target device is the recipient of described packet.
Alternatively, when the quantity of described second target device is multiple, described second target device is used for carrying out clock synchronous with described first object equipment and comprises:
Each second target device is all for carrying out clock synchronous with described first object equipment.
Alternatively, when the quantity of described second target device is multiple, described second target device is used for carrying out clock synchronous with described first object equipment and comprises:
Target device X in second target device is used for, and carries out clock synchronous with described first object equipment, and described target device X is any one in described second target device;
Miscellaneous equipment in described second target device is used for, and carries out clock synchronous with described target device X.
Alternatively, described first object equipment and/or described second target device are radio-frequency nodes;
Described source device is the superior node of described radio-frequency nodes.
Alternatively, described radio-frequency nodes is communicated by CPRI interface with the superior node of described radio-frequency nodes.
Alternatively, described source device sends described packet by Ethernet to described first object equipment and/or described second target device.
The synchronous method of the target device described in the application and synchro system, first object equipment and source device carry out clock synchronous, wherein, source device is the transmit leg of packet, first object equipment is one of recipient of packet, after first object equipment and source device carry out clock synchronous, second target device and first object equipment carry out clock synchronous, second target device is also the recipient of described packet, visible, method described in the present embodiment, when there is multiple target device from source device reception packet, first object equipment and source device carry out clock synchronous, other target device and first object equipment carry out clock synchronous, therefore, the target device receiving described packet all can reach the clock synchronous with source device, namely the clock synchronous between multiple target device can be realized, and, because can independently carry out synchronous between multiple target device, and without the need to the participation of transmission network, therefore, when multiple target device receives described packet by packet transmission networks, what also still can realize between multiple target device is synchronous.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The synchronous method of Fig. 1 target device disclosed in the embodiment of the present application and systematic difference scene schematic diagram;
The flow chart of Fig. 2 a kind of synchronous method of target device disclosed in the embodiment of the present application;
The synchronous method of Fig. 3 target device disclosed in the embodiment of the present application and the another application scenarios schematic diagram of system;
Fig. 4 is the flow chart of the synchronous method of the embodiment of the present application another target device disclosed;
The synchronous method of Fig. 5 target device disclosed in the embodiment of the present application and the another application scenarios schematic diagram of system;
The structural representation of Fig. 6 a kind of synchro system disclosed in the embodiment of the present application.
Embodiment
The embodiment of the present application discloses a kind of synchronous method and synchro system of target device, can be applied in scene as shown in Figure 1: source device is communicated with multiple (namely at least two) target device by transmission system, under this scene (such as MIMO is in single current working pattern in some cases, when many antennas send identical data simultaneously), require that multiple target device is after the identical packet receiving source device transmission, forwards the packet received simultaneously.Method and system described in the embodiment of the present application, object is the clock synchronous between realize target equipment and source device and target device, to meet the demand of the synchronous forwarding data bag of multiple target device.
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
A kind of synchronous method of target device disclosed in the embodiment of the present application, as shown in Figure 2, comprises the following steps:
S201: first object equipment and source device carry out clock synchronous;
Wherein, first object equipment is the transmit leg of packet, sends packet by transmission system to first object equipment and other target device, first object equipment is one of recipient of packet, such as, as shown in fig. 1, first object equipment can be target device 1.
S202: the second target device and first object equipment carry out clock synchronous.
As shown in fig. 1, the second target device can be other target device except first object equipment, such as, and target device 2, target device 3 and target device n.
Particularly, in the present embodiment, the specific implementation that second target device and first object equipment carry out clock synchronous can be: whole second target device (such as target device 2, target device 3 and target device n) all carries out clock synchronous with first object equipment, that is, target device 2 and first object equipment carry out clock synchronous, target device 3 and first object equipment carry out clock synchronous ..., target device n and first object equipment carry out clock synchronous.
It should be noted that, in above step, clock synchronous between first object equipment and source device and the clock synchronous between the second target device and first object equipment, all can adopt but be not limited in following two kinds of modes any one carry out: 1, adopt synchronous ethernet+IEEE1588v2 to complete clock or Frequency Synchronization; 2, clock synchronous line is adopted.
As can be seen from above-mentioned steps, method described in the present embodiment, can realize the clock synchronous between multiple target device, and, initiatively clock synchronous is realized by target device, and without the need to the participation of transmission system, therefore, transmission system does not need to be confined to because of synchronisation requirement time multiplexed transmission system, and can be other transmission system such as packet transmission networks, cable network, therefore, it is possible to reduce under the prerequisite of target device clock synchronous, for the restriction of transmission system.That is, transmission system can adopt the block transmission system that efficiency of transmission is high, and what also can realize between multiple target device is synchronous.
And, further, because clock source synchronous in the present embodiment from source device, so, realize based on clock compensation (clock compensation only for synchronous forwarding, and can not realize target equipment room synchronous) technology that multiple target device synchronously forwards compared to existing, it is synchronous that the method described in the present embodiment has more accurate send-receive clock, thus can clock jitter be reduced, improve the synchronous accuracy forwarded.
The synchronous method of the embodiment of the present application another target device disclosed, in the present embodiment, in multiple target devices shown in Fig. 1, a major heading equipment can be had, other target device is from target device, transmission system between source device and target device can be Ethernet, as shown in Figure 3.
As shown in Figure 4, the method described in the present embodiment comprises the following steps:
S401: major heading equipment and source device carry out clock synchronous;
S402: target device X and major heading equipment carry out clock synchronous;
S403: other target device and target device X carry out clock synchronous.
Such as, target device X be in Fig. 3 from target device 1, namely carry out clock synchronous from target device 1 and major heading equipment, other from target device with carry out clock synchronous from target device 1.
Further, other from target device and the specific implementation of carrying out clock synchronous from target device 1 can be:
Other all with from target device 1 can carry out clock synchronous from target device;
Or, from target device 2 with carry out clock synchronous from target device 1, from target device 3 with carry out clock synchronous from target device 2 ..., from target device n with carry out clock synchronous from target device n-1.
Method described in the present embodiment, when transmission system is Ethernet, can realize the clock synchronous between multiple target device, therefore, it is possible to reduce the synchronisation requirement of Internet Transmission, thus reduces transmission cost.Further, synchronous method is simple, and technical feasibility is high, therefore, has lower stepped cost, and when target device is disposed in a large number, the effect that cost reduces becomes remarkable.
Except above-mentioned application scenarios, the method described in the embodiment of the present application can also be applied in scene as shown in Figure 5:
Target device can be radio-frequency nodes, and source device is the superior node of radio-frequency nodes.
Wherein, communicated by public general radio frequency interface (CommonPublicRadioInterface, CPRI) interface between radio-frequency nodes and superior node.
With said method embodiment accordingly, the embodiment of the present application also discloses a kind of synchro system, as shown in Figure 6, comprising:
First object equipment 601, for carrying out clock synchronous with source device, described source device is the transmit leg of packet, and described first object equipment is one of recipient of described packet;
And the second target device 602, for carrying out clock synchronous with described first object equipment, described second target device is the recipient of described packet.
Wherein, the second target device can be multiple.
Particularly, when the quantity of described second target device is multiple, the specific implementation that the second target device and described first object equipment carry out clock synchronous is: each second target device is all for carrying out clock synchronous with described first object equipment; Or the target device X in the second target device and described first object equipment carry out clock synchronous, other target device and described target device X carry out clock synchronous, and wherein, target device X is any one in described second target device.
Alternatively, in the present embodiment, first object equipment and/or the second target device can be radio-frequency nodes, and source device is can be the superior node of radio-frequency nodes.Further, radio-frequency nodes is communicated by CPRI interface with the superior node of described radio-frequency nodes, and source device sends described packet by Ethernet to described first object equipment and/or described second target device.
Method described in the present embodiment, when transmission system is Ethernet, can realize the clock synchronous between multiple target device, therefore, it is possible to reduce the synchronisation requirement of Internet Transmission, thus reduces transmission cost.Further, synchronous method is simple, and technical feasibility is high, therefore, has lower stepped cost, and when target device is disposed in a large number, the effect that cost reduces becomes remarkable.
If the function described in the embodiment of the present application method using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computing equipment read/write memory medium.Based on such understanding, the part of the part that the embodiment of the present application contributes to prior art or this technical scheme can embody with the form of software product, this software product is stored in a storage medium, comprising some instructions in order to make a computing equipment (can be personal computer, server, mobile computing device or the network equipment etc.) perform all or part of step of method described in each embodiment of the application.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. a synchronous method for target device, is characterized in that, comprising:
First object equipment and source device carry out clock synchronous, and described source device is the transmit leg of packet, and described first object equipment is one of recipient of described packet;
Second target device and described first object equipment carry out clock synchronous, and described second target device is the recipient of described packet.
2. method according to claim 1, is characterized in that, when the quantity of described second target device is multiple, described second target device and described first object equipment carry out clock synchronous and comprises:
Each second target device all carries out clock synchronous with described first object equipment.
3. method according to claim 1, is characterized in that, when the quantity of described second target device is multiple, described second target device and described first object equipment carry out clock synchronous and comprises:
Target device X and described first object equipment carry out clock synchronous, and described target device X is any one in described second target device;
Miscellaneous equipment in described second target device and described target device X carry out clock synchronous.
4. the method according to any one of claims 1 to 3, is characterized in that, described first object equipment and/or described second target device are radio-frequency nodes;
Described source device is the superior node of described radio-frequency nodes.
5. method according to claim 4, is characterized in that, described radio-frequency nodes is communicated by public general radio frequency interface CPRI interface with the superior node of described radio-frequency nodes.
6. method according to claim 4, is characterized in that, described source device sends described packet by Ethernet to described first object equipment and/or described second target device.
7. a synchro system, is characterized in that, comprising:
First object equipment, for carrying out clock synchronous with source device, described source device is the transmit leg of packet, and described first object equipment is one of recipient of described packet;
Second target device, for carrying out clock synchronous with described first object equipment, described second target device is the recipient of described packet.
8. system according to claim 7, is characterized in that, when the quantity of described second target device is multiple, described second target device is used for carrying out clock synchronous with described first object equipment and comprises:
Each second target device is all for carrying out clock synchronous with described first object equipment.
9. system according to claim 7, is characterized in that, when the quantity of described second target device is multiple, described second target device is used for carrying out clock synchronous with described first object equipment and comprises:
Target device X in second target device is used for, and carries out clock synchronous with described first object equipment, and described target device X is any one in described second target device;
Miscellaneous equipment in described second target device is used for, and carries out clock synchronous with described target device X.
10. the system according to any one of claim 7 to 9, is characterized in that, described first object equipment and/or described second target device are radio-frequency nodes;
Described source device is the superior node of described radio-frequency nodes.
11. systems according to claim 10, is characterized in that, described radio-frequency nodes is communicated by CPRI interface with the superior node of described radio-frequency nodes.
12. systems according to claim 10, is characterized in that, described source device sends described packet by Ethernet to described first object equipment and/or described second target device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510368122.0A CN105119675B (en) | 2015-06-29 | 2015-06-29 | A kind of synchronous method and synchronization system of target device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510368122.0A CN105119675B (en) | 2015-06-29 | 2015-06-29 | A kind of synchronous method and synchronization system of target device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105119675A true CN105119675A (en) | 2015-12-02 |
| CN105119675B CN105119675B (en) | 2018-11-06 |
Family
ID=54667583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510368122.0A Active CN105119675B (en) | 2015-06-29 | 2015-06-29 | A kind of synchronous method and synchronization system of target device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105119675B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713487A (en) * | 2017-01-16 | 2017-05-24 | 腾讯科技（深圳）有限公司 | Data synchronization method and device |
| CN111786741A (en) * | 2020-07-20 | 2020-10-16 | 哈尔滨海能达科技有限公司 | Clock synchronization method and related device for CPRI transmission data |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667997A (en) * | 2004-03-10 | 2005-09-14 | 朗迅科技公司 | Method and system for the clock synchronization of network terminals |
| CN101183898A (en) * | 2007-12-27 | 2008-05-21 | 中兴通讯股份有限公司 | System, method and device for implementing synchronization of micromicro honeycomb base station |
| CN101615948A (en) * | 2008-06-25 | 2009-12-30 | 鼎桥通信技术有限公司 | A kind of method and system that realize time synchronized |
| CN101615949A (en) * | 2008-06-27 | 2009-12-30 | 中国移动通信集团上海有限公司 | Realize method, system and the equipment of femtocell clock synchronization |
| US20100118895A1 (en) * | 2008-09-22 | 2010-05-13 | Codrut Radu Radulescu | Network timing synchronization systems |
| CN102769617A (en) * | 2012-07-12 | 2012-11-07 | 华为技术有限公司 | Access equipment and system and data transmission method |
| US20130208735A1 (en) * | 2012-02-09 | 2013-08-15 | Marvell Israel (M.I.S.L) Ltd. | Clock synchronization using multiple network paths |
-
2015
- 2015-06-29 CN CN201510368122.0A patent/CN105119675B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667997A (en) * | 2004-03-10 | 2005-09-14 | 朗迅科技公司 | Method and system for the clock synchronization of network terminals |
| CN101183898A (en) * | 2007-12-27 | 2008-05-21 | 中兴通讯股份有限公司 | System, method and device for implementing synchronization of micromicro honeycomb base station |
| CN101615948A (en) * | 2008-06-25 | 2009-12-30 | 鼎桥通信技术有限公司 | A kind of method and system that realize time synchronized |
| CN101615949A (en) * | 2008-06-27 | 2009-12-30 | 中国移动通信集团上海有限公司 | Realize method, system and the equipment of femtocell clock synchronization |
| US20100118895A1 (en) * | 2008-09-22 | 2010-05-13 | Codrut Radu Radulescu | Network timing synchronization systems |
| US20130208735A1 (en) * | 2012-02-09 | 2013-08-15 | Marvell Israel (M.I.S.L) Ltd. | Clock synchronization using multiple network paths |
| CN102769617A (en) * | 2012-07-12 | 2012-11-07 | 华为技术有限公司 | Access equipment and system and data transmission method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713487A (en) * | 2017-01-16 | 2017-05-24 | 腾讯科技（深圳）有限公司 | Data synchronization method and device |
| CN106713487B (en) * | 2017-01-16 | 2020-10-09 | 腾讯科技（深圳）有限公司 | Data synchronization method and device |
| CN111786741A (en) * | 2020-07-20 | 2020-10-16 | 哈尔滨海能达科技有限公司 | Clock synchronization method and related device for CPRI transmission data |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105119675B (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108029110A (en) | The method and apparatus of on-demand broadcasting system information | |
| CN109672708B (en) | Communication method, device and system | |
| CN105634707A (en) | Information transmission method, base station and terminal | |
| US11509440B2 (en) | Method and apparatus for indicating synchronization signal block group indication information within synchronization signal blocks | |
| CN104426645A (en) | Method for determining Ethernet clock source and device for determining Ethernet clock source | |
| CN106105103A (en) | Clock synchronizing method, equipment and communication system | |
| WO2009045783A1 (en) | Communication scheduling of network nodes using fair access and weighting techniques | |
| CN104243010A (en) | Relay station wireless-connected method and system and relay stations | |
| CN112449420A (en) | Data transmission method and device | |
| JP6579624B2 (en) | Method for transmitting information, base station, and user equipment | |
| CN112702700B (en) | Resource allocation method and device | |
| JP2012124663A (en) | Radio communication system, radio communication method, and radio communication program | |
| CN103595494A (en) | Centerless TDMA (Time Division Multiple Access) synchronization method suitable for Ad hoc Network | |
| CN105119675A (en) | Target device synchronization method and synchronization system | |
| CN104754521A (en) | Message transmitting method, wireless access point, wireless controller and system | |
| US20160173574A1 (en) | Radio access method, apparatus, and system | |
| WO2018154348A8 (en) | Interface for a cloud radio access network | |
| US10742260B2 (en) | Synchronizing unicast traffic | |
| CN104053212A (en) | Transmission method of D2D finding signal and equipment | |
| CN102316576A (en) | Wireless base station clock synchronization method and system thereof, base band frame and exchange frame | |
| CN102752794A (en) | Method, device and transmission system for transmitting and receiving data block | |
| JP2021520702A (en) | Information determination and configuration methods, devices, computer storage media | |
| CN104753658A (en) | Method and device for data transmission in simultaneous same-frequency full duplex system | |
| US10860376B2 (en) | Communication apparatus and base station | |
| CN111416695B (en) | Data transmission method, terminal and network side equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |