CN104768217A - Synchronization method, terminal and base station - Google Patents
Synchronization method, terminal and base station Download PDFInfo
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- CN104768217A CN104768217A CN201410001309.2A CN201410001309A CN104768217A CN 104768217 A CN104768217 A CN 104768217A CN 201410001309 A CN201410001309 A CN 201410001309A CN 104768217 A CN104768217 A CN 104768217A
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Abstract
The invention relates to the field of communication technologies and discloses a synchronization method, a terminal and a base station for solving the technical problem that the time of the terminal in the prior art is not precise enough. The synchronization method is applied to the terminal and comprises the following steps of receiving a first synchronous message, which is transmitted by a positioning device, wherein the first synchronous message includes first position information of the positioning device; receiving a second synchronous message, which is periodically transmitted by a synchronizer, wherein the second synchronous message includes current time of the synchronizer and second position information of the synchronizer, and the synchronizer is pseudo satellite equipment or the base station; and synchronizing the current time of the terminal according to the first position information, the second position information and the current time of the synchronizer.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of synchronous method, terminal and base station.
Background technology
Base station refers in certain area of radio coverage, by carrying out the transceiving radio station of information transmission between mobile switching center and terminal.The construction of base station is the pith of mobile communication carrier of China investment, and the construction of base station is all generally carry out around coverage rate, speech quality, returns of investment, construction difficulty or ease, the key element such as easy to maintenance.Along with mobile communications network business is to datumization, packetizing future development, the development trend of base station also necessarily broadband, large coverage rate construction and IPization.
In prior art, terminal can from base station acquisition time, and then realizes time synchronous of terminal and base station.
Present inventor finds at least there is following technical problem in prior art:
Owing to there is certain distance between terminal and base station, thus certain time delay can be there is signal is sent to terminal during from base station, so the technical problem that the time that there is terminal in prior art is not accurate enough.
Summary of the invention
The embodiment of the present invention provides a kind of synchronous method, terminal and base station, to solve the technical problem that in prior art, the time of terminal is not accurate enough.
First aspect, the embodiment of the present invention provides a kind of synchronous method, is applied to terminal, comprising: the first synchronization message that receiving positioner sends, and comprises the primary importance information of described positioner in described first synchronization message; Receive the second synchronization message of synchronizer cycle transmission, comprise the current time of described synchronizer and the second place information of described synchronizer in described second synchronization message, described synchronizer is pseudo satellite, pseudolite equipment or base station; Current time according to described primary importance information, described second place information and described synchronizer is carried out synchronously the current time of described terminal.
From such scheme, the primary importance information that sends according to positioner in embodiments of the present invention, the current time of synchronizer and the second place positional information of synchronizer are carried out synchronous to the current time of terminal, due to the second place information of the primary importance information and synchronizer that with reference to positioner when synchronous, so slow down the time delay that the distance between terminal and synchronizer is brought, reach the technique effect of the time precision improving terminal.
Preferably, the described current time according to described primary importance information, described second place information and described synchronizer is carried out synchronously to the current time of described terminal, specifically comprise: using described primary importance as the current position of described terminal, determine the distance between described terminal and described synchronizer according to described primary importance information and described second place information; According to the transmission rate of the distance between described terminal and described synchronizer and the second synchronization message, calculate described second synchronization message from described synchronizer to the transmission time length of described terminal; The time of terminal according to the current time of described synchronizer and described transmission time length adjustment.Because calculated transmission time length is exactly the propagation delay time of synchronizer to terminal, so by the current time of synchronizer and the time of transmission time length adjustment terminal, just can prevent because exist accurate not apart from the time of the terminal caused between synchronizer and terminal.
Preferably, after the described current time according to described primary importance information, described second place information and described synchronizer is carried out synchronously to the current time of described terminal, described method also comprises: receive the current time of at least three pseudo satellite, pseudolite equipment and the positional information of described at least three pseudo satellite, pseudolite equipment; The current location information of described terminal is determined according to the current time of described at least three pseudo satellite, pseudolite equipment and the positional information of described at least three pseudo satellite, pseudolite equipment.Due to pseudo satellite, pseudolite equipment positioning precision very high and time, comparatively base station is more accurate, so positioned terminal by three pseudo satellite, pseudolite base stations, can improve the precision of terminal positioning.
Second aspect, the embodiment of the present invention provides a kind of synchronous method, is applied to base station, comprising: the current time receiving the described pseudo satellite, pseudolite equipment that pseudo satellite, pseudolite equipment sends; The current time of described base station is set according to the current time of described pseudo satellite, pseudolite equipment.
Due in such scheme, using the current time of the current time of pseudo satellite, pseudolite equipment as base station, and the time precision of pseudo satellite, pseudolite equipment is higher than the time precision of base station, so in this case, reaches the technique effect of the time precision improving base station.
Preferably, described method also comprises: periodically the second synchronization message is sent to terminal, comprise the current time of described base station and the second place information of described base station in described second synchronization message, the second place information of the primary importance information of described positioner comprised in the first synchronization message sent according to positioner to make described terminal, the current time of described base station and described base station is carried out synchronously the current time of described terminal.Due to when carrying out synchronous to the current time of terminal, with reference to the primary importance information of positioner and the second place information of base station, so slow down the time delay that the distance between terminal and base station brings, reaching the technique effect of the time precision improving terminal.
Preferably, the distance of described base station and described pseudo satellite, pseudolite equipment is less than predeterminable range.The distance of base station and pseudo satellite, pseudolite equipment is less than predeterminable range, and the current time that can reduce pseudo satellite, pseudolite equipment transfers to the time delay of base station, and then further improves the time precision of base station.
The third aspect, the embodiment of the present invention provides a kind of terminal, comprising: the first receiver module, for the first synchronization message that receiving positioner sends, comprises the primary importance information of described positioner in described first synchronization message; Second receiver module, for receiving the second synchronization message of synchronizer cycle transmission, comprise the current time of described synchronizer and the second place information of described synchronizer in described second synchronization message, described synchronizer is pseudo satellite, pseudolite equipment or base station; Synchronization module, for carrying out synchronously the current time of described terminal according to the current time of described primary importance information, described second place information and described synchronizer.
From such scheme, the primary importance information that sends according to positioner in embodiments of the present invention, the current time of synchronizer and the second place positional information of synchronizer are carried out synchronous to the current time of terminal, due to the second place information of the primary importance information and synchronizer that with reference to positioner when synchronous, so slow down the time delay that the distance between terminal and synchronizer is brought, reach the technique effect of the time precision improving terminal.
Preferably, described synchronization module, specifically comprises: determining unit, for using described primary importance as the current position of described terminal, determine the distance between described terminal and described synchronizer according to described primary importance information and described second place information; Computing unit, for the transmission rate according to the distance between described terminal and described synchronizer and the second synchronization message, calculates described second synchronization message from described synchronizer to the transmission time length of described terminal; Adjustment unit, for the time of terminal according to the current time of described synchronizer and described transmission time length adjustment.Because calculated transmission time length is exactly the propagation delay time of synchronizer to terminal, so by the current time of synchronizer and the time of transmission time length adjustment terminal, just can prevent because exist accurate not apart from the time of the terminal caused between synchronizer and terminal.
Preferably, described device also comprises: the 3rd receiver module, for according to the current time of described primary importance information, described second place information and described pseudo satellite, pseudolite equipment or described base station, the current time of described terminal is carried out synchronous after, receive the current time of at least three pseudo satellite, pseudolite equipment and the positional information of described at least three pseudo satellite, pseudolite equipment; Determination module, for determining the current location information of described terminal according to the current time of described at least three pseudo satellite, pseudolite equipment and the positional information of described at least three pseudo satellite, pseudolite equipment.Due to pseudo satellite, pseudolite equipment positioning precision very high and time, comparatively base station is more accurate, so positioned terminal by three pseudo satellite, pseudolite base stations, can improve the precision of terminal positioning.
Fourth aspect, the embodiment of the present invention provides a kind of base station, comprising: receiver module, for receiving the current time of the described pseudo satellite, pseudolite equipment that pseudo satellite, pseudolite equipment sends; Setting module, for setting the current time of described base station according to the current time of described pseudo satellite, pseudolite equipment.
Due in such scheme, using the current time of the current time of pseudo satellite, pseudolite equipment as base station, and the time precision of pseudo satellite, pseudolite equipment is higher than the time precision of base station, so in this case, reaches the technique effect of the time precision improving base station.
Preferably, described base station also comprises: sending module, for periodically the second synchronization message being sent to terminal, comprise the current time of described base station and the second place information of described base station in described second synchronization message, the second place information of the primary importance information of described positioner comprised in the first synchronization message sent according to positioner to make described terminal, the current time of described base station and described base station is carried out synchronously the current time of described terminal.Due to when carrying out synchronous to the current time of terminal, with reference to the primary importance information of positioner and the second place information of base station, so slow down the time delay that the distance between terminal and base station brings, reaching the technique effect of the time precision improving terminal.
Preferably, the distance of described base station and described pseudo satellite, pseudolite equipment is less than predeterminable range.The distance of base station and pseudo satellite, pseudolite equipment is less than predeterminable range, and the current time that can reduce pseudo satellite, pseudolite equipment transfers to the time delay of base station, and then further improves the time precision of base station.
Accompanying drawing explanation
Fig. 1 is the flow chart of the synchronous method of embodiment of the present invention first aspect;
Fig. 2 is the position relationship schematic diagram of middle positioner, terminal, synchronizer in the synchronous method of embodiment of the present invention second aspect;
Fig. 3 carries out synchronous flow chart to the current time of terminal in the synchronous method of embodiment of the present invention first aspect;
The flow chart in the synchronous method that Fig. 4 is embodiment of the present invention first aspect, terminal positioned;
Fig. 5 is the flow chart of the synchronous method of embodiment of the present invention second aspect;
Fig. 6 is the flow chart of time synchronized between pseudo satellite, pseudolite device A and pseudo satellite, pseudolite equipment B in the synchronous method of embodiment of the present invention second aspect;
Fig. 7 is the structure chart of embodiment of the present invention terminal;
Fig. 8 is the structure chart of embodiment of the present invention base station.
Embodiment
Owing to there is certain distance between terminal and base station, thus certain time delay can be there is signal is sent to terminal during from base station, so the technical problem that the time that there is terminal in prior art is not accurate enough.A kind of synchronous method being applied to terminal is proposed to this embodiment of the present invention, comprising: the first synchronization message that receiving positioner sends, in the first synchronization message, comprise the primary importance information of positioner; Receive the second synchronization message of synchronizer cycle transmission, comprise the current time of synchronizer and the second place information of synchronizer in the second synchronization message, synchronizer is pseudo satellite, pseudolite equipment or base station; Current time according to primary importance information, second place information and synchronizer is carried out synchronously the current time of terminal.Owing to reference to the primary importance information of positioner and the second place information of synchronizer when synchronous to the current time of terminal, so slow down the time delay that the distance between terminal and synchronizer is brought, reach the technique effect of the time precision improving terminal.
Below by accompanying drawing and specific embodiment, technical solution of the present invention is described in detail, the specific features being to be understood that in the embodiment of the present invention and embodiment is the detailed description to technical solution of the present invention, instead of the restriction to technical solution of the present invention, when not conflicting, the technical characteristic in the embodiment of the present invention and embodiment can combine mutually.
First aspect, the embodiment of the present invention provides a kind of synchronous method, is applied to terminal, and this terminal is such as: mobile phone, panel computer etc., please refer to Fig. 1, and the method comprises:
Step S101: the first synchronization message that receiving positioner sends, comprises the primary importance information of positioner in the first synchronization message;
For example, positioner is such as: GPS position indicator, pseudo satellite, pseudolite device, base station etc.
For example, primary importance information is such as: the latitude and longitude information of positioner.
For example, positioner is when launching primary importance information, its transmitting power is less than preset value, only have like this and be less than predeterminable range with the distance of positioner, such as: the terminal of 1m, 2m can receive primary importance information, in this case, due to the close together of positioner and terminal, so can be similar to the current location of the position of positioner as terminal.
As shown in Figure 2, be the position relationship schematic diagram of terminal, positioner, synchronizer (base station or pseudo satellite, pseudolite equipment), the close together of terminal and positioner can be found out, and distant with synchronizer.
Step S102: the second synchronization message receiving the transmission of synchronizer cycle, comprise the current time of synchronizer and the second place information of synchronizer in the second synchronization message, synchronizer is pseudo satellite, pseudolite equipment or base station;
For example, the cycle that synchronizer sends the second synchronization message can be arbitrary value, and such as: 1min, 5min etc., the embodiment of the present invention is not restricted.
For example, the current time of synchronizer is the time that synchronizer sends the second synchronization message, is assumed to be: 10:00, and can certainly be other value, such as: 11:00,12:00 etc., the embodiment of the present invention be restricted.
For example, second place information is such as: the latitude and longitude information of synchronizer.
For example, base station can with base station after the time synchronized of pseudo satellite, pseudolite equipment, in this case, because the time of base station is more accurate, so the current time of the terminal determined is more accurate, for how realizing the synchronous of pseudo satellite, pseudolite equipment and base station, will be introduced follow-up.
Step S103: the current time according to primary importance information, second place information and synchronizer is carried out synchronously the current time of terminal.
Preferably, in step S103, please refer to Fig. 3, can carry out synchronously to the current time of terminal in the following ways:
Step S301: using primary importance as the current position of terminal, according to primary importance information and the distance between second place information determination terminal and synchronizer; When terminal and positioner close together, can be similar to the position of positioner as the current position of terminal.
Step S302: according to the transmission rate of the distance between terminal and synchronizer and the second synchronization message, calculate the transmission time length of the second synchronization message from synchronizer to terminal;
For example, synchronizer can in several ways by the second synchronizing message transmissions to terminal, such as: by electromagnetic wave, by light wave etc., wherein different transmission meanss, transmission rate is also different, for the second synchronization message by light wave transmissions to terminal, so its transmission rate is: 2.98*10
8m/s, and suppose that the distance between terminal and synchronizer is 2.980km, so can calculate transmission time length is: 10
-5s, certain above-mentioned data are only a citing, not as restriction.
Step S303: according to the current time of synchronizer and the time of transmission time length adjustment terminal.
For example, the current time of synchronizer can be added the time of transmission time length as terminal, when reality adjusts, can first determine the current time of synchronizer and transmission time length add and, then the real time of terminal is determined, finally add by the current time of synchronizer and transmission time length and deduct the real time of terminal, be the time delay of terminal, then the time delay of terminal is added with the real time of terminal, just can by the time synchronized of the time of terminal and synchronizer.
Such as: suppose that the real time of terminal is 09:59, so the time delay of terminal is: 1min+10
-5s, namely adds 1min+10 on the basis of the real time 09:59 of terminal
-5s, just can by the time synchronized of the time of terminal and synchronizer.
Preferably, after carrying out synchronously according to the current time of primary importance information, second place information and synchronizer to the current time of terminal, please refer to Fig. 4, method also comprises:
Step S401: receive the current time of at least three pseudo satellite, pseudolite equipment and the positional information of at least three pseudo satellite, pseudolite equipment;
Step S402: according to the current location information of the current time of at least three pseudo satellite, pseudolite equipment and the positional information determination terminal of at least three pseudo satellite, pseudolite equipment.
For example, owing to achieving time synchronized between terminal and pseudo satellite, pseudolite equipment, so can based on the current time of the current time of pseudo satellite, pseudolite equipment and terminal, determine the distance between terminal and pseudo satellite, pseudolite equipment, and after the distance of the positional information and each pseudo satellite, pseudolite equipment and terminal of determining at least three pseudo satellite, pseudolite equipment, just can be determined the current location information of terminal by three-point fox method.
Second aspect, the embodiment of the present invention provides a kind of synchronous method, and be applied to base station, please refer to Fig. 5, method specifically comprises:
Step S501: the current time receiving the pseudo satellite, pseudolite equipment that pseudo satellite, pseudolite equipment sends;
Step S502: according to the current time of the current time setting base station of pseudo satellite, pseudolite equipment.
For example, pseudo satellite, pseudolite equipment extracts current time from the time system of self, then the current time of pseudo satellite, pseudolite equipment is sent to base station.
Base station is after the current time receiving pseudo satellite, pseudolite equipment, determine the time difference of the current time of pseudo satellite, pseudolite equipment and the current time of base station, then on the basis of the current time of base station, the time difference is added, just can using the current time of the current time of pseudo satellite, pseudolite equipment as base station, thus the time of time base station and pseudo satellite, pseudolite equipment is synchronous.
In specific implementation process, realizing pseudo satellite, pseudolite equipment with before synchronous between base station, can also first realize the synchronous of pseudo satellite, pseudolite device interior time, please refer to Fig. 6, be the flow chart of time synchronized between pseudo satellite, pseudolite device A and pseudo satellite, pseudolite equipment B, specifically comprise:
Step S601: pseudo satellite, pseudolite device A generates and launches broadcast singal to B.
Step S602: after the reception antenna of pseudo satellite, pseudolite equipment B captures the broadcast singal that A launches, starts to follow the tracks of and the broadcast singal of observation A.
Step S603: pseudo satellite, pseudolite equipment B generates oneself exclusive broadcast singal (by random code and carrier wave).
Step S604: pseudo satellite, pseudolite equipment B calculates the difference of the time of time of carrying and oneself this locality in the signal of the A received, if ignore propagated error, this difference to be between A, B pseudo satellite, pseudolite equipment caused by clock jitter joint effect.
Step S605: pseudo satellite, pseudolite equipment B utilizes DDS(Direct Digital Synthesis) technological adjustment local clock crystal oscillator, the difference of the time of it and A is down to and is always 0, now can think that the clock of B is synchronous with A.
Step S606: last, the time difference that the spacing revising A, B causes, namely adds on the basis of the time of pseudo satellite, pseudolite equipment B that signal transfers to the time of pseudo satellite, pseudolite equipment B from pseudo satellite, pseudolite device A.
Optionally, the distance of base station and pseudo satellite, pseudolite equipment equipment is less than predeterminable range.Predeterminable range, be such as: 1m, 2m etc., such as shown in Figure 2, base station and pseudo satellite, pseudolite equipment equipment are built location altogether, in this case, the propagation delay time of base station and pseudo satellite, pseudolite equipment is close to 0, so the current time of set base station is more accurate, higher with the synchronism of pseudo satellite, pseudolite equipment equipment.
Optionally, method also comprises:
Periodically the second synchronization message is sent to terminal, comprise the current time of base station and the second place information of base station in second synchronization message, the second place information of the primary importance information of positioner comprised in the first synchronization message sent according to positioner to make terminal, the current time of base station and base station is carried out synchronously the current time of terminal.
Because the current time of the current time and terminal that specifically how to realize base station is carried out synchronously, before be described, so do not repeat them here.
The third aspect, the embodiment of the present invention provides a kind of terminal, please refer to Fig. 7, specifically comprises:
First receiver module 70, for the first synchronization message that receiving positioner sends, comprises the primary importance information of positioner in the first synchronization message;
Second receiver module 71, for receiving the second synchronization message of synchronizer cycle transmission, comprise the current time of synchronizer and the second place information of synchronizer in the second synchronization message, synchronizer is pseudo satellite, pseudolite equipment or base station;
Synchronization module 72, for carrying out synchronously the current time of terminal according to the current time of primary importance information, second place information and synchronizer.
Optionally, synchronization module 72, specifically comprises:
Determining unit, for using primary importance as the current position of terminal, according to primary importance information and the distance between second place information determination terminal and synchronizer;
Computing unit, for the transmission rate according to the distance between terminal and synchronizer and the second synchronization message, calculates the transmission time length of the second synchronization message from synchronizer to terminal;
Adjustment unit, for according to the current time of synchronizer and the time of transmission time length adjustment terminal.
Optionally, terminal also comprises:
3rd receiver module, for according to the current time of primary importance information, second place information and pseudo satellite, pseudolite equipment or base station, the current time of terminal is carried out synchronous after, receive the current time of at least three pseudo satellite, pseudolite equipment and the positional information of at least three pseudo satellite, pseudolite equipment;
Determination module, for the current location information according to the current time of at least three pseudo satellite, pseudolite equipment and the positional information determination terminal of at least three pseudo satellite, pseudolite equipment.
Fourth aspect, the embodiment of the present invention provides a kind of base station, please refer to Fig. 8, comprising:
Receiver module 80, for receiving the current time of the pseudo satellite, pseudolite equipment that pseudo satellite, pseudolite equipment sends;
Setting module 81, for the current time of the current time setting base station according to pseudo satellite, pseudolite equipment.
Optionally, base station also comprises:
Sending module, for periodically the second synchronization message being sent to terminal, comprise the current time of base station and the second place information of base station in second synchronization message, the second place information of the primary importance information of positioner comprised in the first synchronization message sent according to positioner to make terminal, the current time of base station and base station is carried out synchronously the current time of terminal.
Optionally, the distance of base station and pseudo satellite, pseudolite equipment is less than predeterminable range.
One or more embodiment of the present invention at least has following beneficial effect:
Due in embodiments of the present invention, the primary importance information that sends according to positioner, the current time of synchronizer and the second place positional information of synchronizer are carried out synchronous to the current time of terminal, due to the second place information of the primary importance information and synchronizer that with reference to positioner when synchronous, so slow down the time delay that the distance between terminal and synchronizer is brought, reach the technique effect of the time precision improving terminal.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (12)
1. a synchronous method, is applied to terminal, it is characterized in that, comprising:
The first synchronization message that receiving positioner sends, comprises the primary importance information of described positioner in described first synchronization message;
Receive the second synchronization message of synchronizer cycle transmission, comprise the current time of described synchronizer and the second place information of described synchronizer in described second synchronization message, described synchronizer is pseudo satellite, pseudolite equipment or base station;
Current time according to described primary importance information, described second place information and described synchronizer is carried out synchronously the current time of described terminal.
2. the method for claim 1, is characterized in that, the described current time according to described primary importance information, described second place information and described synchronizer carries out synchronously, specifically comprising to the current time of described terminal:
Using described primary importance as the current position of described terminal, determine the distance between described terminal and described synchronizer according to described primary importance information and described second place information;
According to the transmission rate of the distance between described terminal and described synchronizer and the second synchronization message, calculate described second synchronization message from described synchronizer to the transmission time length of described terminal;
The time of terminal according to the current time of described synchronizer and described transmission time length adjustment.
3. the method for claim 1, is characterized in that, after the described current time according to described primary importance information, described second place information and described synchronizer is carried out synchronously to the current time of described terminal, described method also comprises:
Receive the current time of at least three pseudo satellite, pseudolite equipment and the positional information of described at least three pseudo satellite, pseudolite equipment;
The current location information of described terminal is determined according to the current time of described at least three pseudo satellite, pseudolite equipment and the positional information of described at least three pseudo satellite, pseudolite equipment.
4. a synchronous method, is applied to base station, it is characterized in that, comprising:
Receive the current time of the described pseudo satellite, pseudolite equipment that pseudo satellite, pseudolite equipment sends;
The current time of described base station is set according to the current time of described pseudo satellite, pseudolite equipment.
5. method as claimed in claim 4, it is characterized in that, described method also comprises:
Periodically the second synchronization message is sent to terminal, comprise the current time of described base station and the second place information of described base station in described second synchronization message, the second place information of the primary importance information of described positioner comprised in the first synchronization message sent according to positioner to make described terminal, the current time of described base station and described base station is carried out synchronously the current time of described terminal.
6. the method as described in claim 4 or 5, is characterized in that, the distance of described base station and described pseudo satellite, pseudolite equipment is less than predeterminable range.
7. a terminal, is characterized in that, comprising:
First receiver module, for the first synchronization message that receiving positioner sends, comprises the primary importance information of described positioner in described first synchronization message;
Second receiver module, for receiving the second synchronization message of synchronizer cycle transmission, comprise the current time of described synchronizer and the second place information of described synchronizer in described second synchronization message, described synchronizer is pseudo satellite, pseudolite equipment or base station;
Synchronization module, for carrying out synchronously the current time of described terminal according to the current time of described primary importance information, described second place information and described synchronizer.
8. terminal as claimed in claim 7, it is characterized in that, described synchronization module, specifically comprises:
Determining unit, for using described primary importance as the current position of described terminal, determine the distance between described terminal and described synchronizer according to described primary importance information and described second place information;
Computing unit, for the transmission rate according to the distance between described terminal and described synchronizer and the second synchronization message, calculates described second synchronization message from described synchronizer to the transmission time length of described terminal;
Adjustment unit, for the time of terminal according to the current time of described synchronizer and described transmission time length adjustment.
9. terminal as claimed in claim 7, it is characterized in that, described device also comprises:
3rd receiver module, for according to the current time of described primary importance information, described second place information and described pseudo satellite, pseudolite equipment or described base station, the current time of described terminal is carried out synchronous after, receive the current time of at least three pseudo satellite, pseudolite equipment and the positional information of described at least three pseudo satellite, pseudolite equipment;
Determination module, for determining the current location information of described terminal according to the current time of described at least three pseudo satellite, pseudolite equipment and the positional information of described at least three pseudo satellite, pseudolite equipment.
10. a base station, is characterized in that, comprising:
Receiver module, for receiving the current time of the described pseudo satellite, pseudolite equipment that pseudo satellite, pseudolite equipment sends;
Setting module, for setting the current time of described base station according to the current time of described pseudo satellite, pseudolite equipment.
11. base stations as claimed in claim 10, it is characterized in that, described base station also comprises:
Sending module, for periodically the second synchronization message being sent to terminal, comprise the current time of described base station and the second place information of described base station in described second synchronization message, the second place information of the primary importance information of described positioner comprised in the first synchronization message sent according to positioner to make described terminal, the current time of described base station and described base station is carried out synchronously the current time of described terminal.
12. base stations as described in claim 10 or 11, it is characterized in that, the distance of described base station and described pseudo satellite, pseudolite equipment is less than predeterminable range.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105262976A (en) * | 2015-09-22 | 2016-01-20 | 武汉钢铁(集团)公司 | Method for controlling third-party recording and broadcasting source and multipoint controller (MCU) |
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| CN105262976A (en) * | 2015-09-22 | 2016-01-20 | 武汉钢铁(集团)公司 | Method for controlling third-party recording and broadcasting source and multipoint controller (MCU) |
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| WO2017193333A1 (en) * | 2016-05-12 | 2017-11-16 | 广东欧珀移动通信有限公司 | Synchronisation method, terminal and network device |
| CN108702206A (en) * | 2016-05-12 | 2018-10-23 | Oppo广东移动通信有限公司 | Synchronous method, terminal and the network equipment |
| US11076373B2 (en) | 2016-05-12 | 2021-07-27 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Synchronisation method, terminal and network device |
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