CN111107621A - Synchronization method and device - Google Patents
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- CN111107621A CN111107621A CN201811267784.9A CN201811267784A CN111107621A CN 111107621 A CN111107621 A CN 111107621A CN 201811267784 A CN201811267784 A CN 201811267784A CN 111107621 A CN111107621 A CN 111107621A
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Abstract
The invention provides a synchronization method and a synchronization device, which relate to the technical field of communication, and the method comprises the following steps: the active antenna unit receives a frame synchronization message sent by the baseband unit; the active antenna unit acquires absolute time in the frame synchronization message when determining that the frame number in the frame synchronization message is different from the frame number generated by the active antenna unit; the active antenna unit carries out time calibration on the active antenna unit according to the absolute time; and the active antenna unit completes the frame number configuration process according to the calibrated time, thereby realizing the frame synchronization with the baseband unit. In the embodiment of the invention, the active antenna unit is internally provided with the frame number, so that the reliability is higher, the service resources are saved, and the active antenna unit is decoupled with the baseband unit, so that the active antenna is more stable, the dependence of the active antenna unit on the baseband unit is reduced, and the expandability and the portability are better.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a synchronization method and apparatus.
Background
The development of mobile communication technology does not leave the support of synchronization technology, and the stability of carrier frequency, the alignment of uplink and downlink time slots, reliable high-quality transmission, the switching between base stations, roaming and the like all need precise synchronization control.
In a fifth generation mobile communication network, a base station device is a distributed wireless access device, and is composed of a baseband unit and an active antenna array. Due to the characteristics of the time-division system, the active antenna array needs to be aligned with the baseband unit to realize frame number synchronization and realize local time slot number and frame number counting.
However, in the existing synchronization technology, only the active antenna array side has a synchronization signal, and the whole alignment process completely depends on the baseband unit side. And the active antenna array side only has synchronous signals, and lacks precise time information synchronous with the baseband unit side, so that the information is not easy to be correspondingly associated with events at the baseband unit side in the problem positioning of the base station, and the problem positioning is not facilitated.
In summary, the prior art fails to provide a synchronization method suitable for the fifth generation mobile communication network.
Disclosure of Invention
The invention provides a synchronization method and a synchronization device, which are used for solving the problem that the prior art cannot provide a synchronization method suitable for a fifth generation mobile communication network.
The embodiment of the invention provides a synchronization method, which comprises the following steps:
the active antenna unit receives a frame synchronization message sent by the baseband unit;
the active antenna unit acquires absolute time in the frame synchronization message when determining that the frame number in the frame synchronization message is different from the frame number generated by the active antenna unit; the active antenna unit carries out time calibration on the active antenna unit according to the absolute time;
and the active antenna unit completes the frame number configuration process according to the calibrated time, thereby realizing the frame synchronization with the baseband unit.
In the embodiment of the invention, after the active antenna unit receives the frame synchronization message sent by the baseband unit, whether the frame number in the frame synchronization message is consistent with the local frame number of the active antenna unit is determined, and if the frame number in the frame synchronization message is determined to be inconsistent with the local frame number of the active antenna unit, frame synchronization is carried out; in the embodiment of the invention, the absolute time is carried in the frame synchronization message, the active antenna unit firstly carries out the time calibration of the active antenna unit through the absolute time, and the active antenna unit completes the frame number configuration process through the time after the calibration meeting, thereby realizing the frame synchronization with the baseband unit. In the embodiment of the invention, the active antenna unit is internally provided with the frame number, so that the reliability is higher, the service resources are saved, and the active antenna unit is decoupled with the baseband unit, so that the active antenna is more stable, the dependence of the active antenna unit on the baseband unit is reduced, and the expandability and the portability are better.
Further, the time-calibrating the active antenna unit according to the absolute time by the active antenna unit includes:
and the active antenna unit carries out time calibration according to the second pulse of the absolute time and the interrupt generated by the active antenna unit.
In the embodiment of the invention, the active antenna unit acquires the high-precision second pulse, and the time calibration is carried out through the high-precision second pulse, so that the reliability of the time calibration is higher.
Further, the active antenna unit completes a frame number configuration process according to the calibrated time, including:
the active antenna unit determines a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number, wherein the synchronous frame number is the corresponding frame number when the next frame number configuration period arrives;
and the active antenna unit completes frame number configuration according to the synchronous frame number.
In the embodiment of the invention, the active antenna determines the frame number according to the calibrated time, namely the absolute time by utilizing the corresponding relation between the time and the frame number, and the frame number is required to have effective time after the frame number configuration, and the frame number configured according to the calibrated time and calculated by the active antenna when the next frame number configuration period arrives is calculated.
Further, the active antenna unit comprises a first processing module and a second processing module;
the active antenna unit time-calibrating the active antenna unit according to the absolute time, including:
the first processing module performs time calibration on the active antenna unit according to the absolute time;
the active antenna unit determines a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number, and the method comprises the following steps:
the second processing module determines a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number;
the active antenna unit completes the frame number configuration of the active antenna unit according to the synchronous frame number, and the method comprises the following steps:
the second processing module determines a notification message according to the frame number configuration cycle, wherein the notification message is used for indicating the first processing module to send a response message to the second processing module when the set time is reached;
the first processing module sends the response message to the second processing module when the set time is up according to the notification message;
after receiving the response message, the second processing module sends the synchronous frame number determined by the second processing module to the first processing module;
and the first processing module completes frame number configuration according to the synchronous frame number.
In the embodiment of the invention, the active antenna unit comprises a first processing module and a second processing module, the first processing module carries out time calibration according to absolute time, the second processing module determines a synchronous frame number according to the time calibrated by the first processing module, a frame number configuration period and the corresponding relation between the time and the frame number, the first processing module informs the second processing module when the set time is reached, and the second processing module sends the synchronous frame number to the first processing module so that the first processing module completes frame number configuration.
Further, after receiving the response message, the second processing module further includes:
and the second processing module sends the synchronous frame number to the slave equipment of the active antenna unit so as to enable the slave equipment to complete frame number synchronization.
In the embodiment of the present invention, the slave device of the active antenna also needs to perform frame number synchronization, so in the embodiment of the present invention, the second processing module also needs to send the synchronization frame number to the slave device of the active antenna.
An embodiment of the present invention further provides a synchronization apparatus, including:
a receiving unit, configured to receive a frame synchronization message sent by a baseband unit;
an obtaining unit, configured to obtain an absolute time in the frame synchronization message when it is determined that a frame number in the frame synchronization message is different from a frame number generated by the active antenna unit;
the time calibration unit is used for carrying out time calibration on the active antenna unit according to the absolute time;
and the frame synchronization unit is used for completing a frame number configuration process according to the calibrated time so as to realize frame synchronization with the baseband unit.
In the embodiment of the invention, after receiving the frame synchronization message sent by the baseband unit, whether the frame number in the frame synchronization message is consistent with the local frame number of the active antenna unit is determined, and if the frame number in the frame synchronization message is determined to be inconsistent with the local frame number of the active antenna unit, frame synchronization is carried out; in the embodiment of the invention, the absolute time is carried in the frame synchronization message, the time calibration of the active antenna unit is firstly carried out through the absolute time, and the frame number configuration process is completed through the time after the calibration meeting, so that the frame synchronization with the baseband unit is realized. In the embodiment of the invention, the synchronization device is internally provided with the frame number, has higher reliability, saves service resources, is decoupled with the baseband unit, reduces the dependence on the baseband unit, and has better expandability and portability.
Further, the time calibration unit is specifically configured to:
and performing time calibration according to the second pulse of the absolute time and the interrupt generated by the active antenna unit.
Further, the frame synchronization unit is specifically configured to:
determining a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number, wherein the synchronous frame number is the corresponding frame number when the next frame number configuration period arrives;
and completing frame number configuration according to the synchronous frame number.
Further, the time calibration unit is specifically configured to:
time calibration is carried out on the active antenna unit according to the absolute time;
the frame synchronization unit is specifically configured to:
determining a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number;
determining a notification message according to the frame number configuration period, wherein the notification message is used for indicating the time calibration unit to send a response message to the frame synchronization unit when the set time arrives;
the time calibration unit is specifically configured to:
according to the notification message, sending the response message to the frame synchronization unit when the set time is up;
the frame synchronization unit is specifically configured to:
after receiving the response message, sending the synchronization frame number determined by the frame synchronization unit to the time calibration unit;
the time calibration unit is specifically configured to:
and completing frame number configuration according to the synchronous frame number.
Further, the frame synchronization unit is further configured to:
and sending the synchronous frame number to the slave equipment of the active antenna unit so that the slave equipment completes frame number synchronization.
An embodiment of the present invention further provides an electronic device, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of the above embodiments.
Embodiments of the present invention also provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the method of any one of the above embodiments.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a synchronization method according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a synchronization method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a synchronization apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention provides a synchronization method, as shown in fig. 1, including:
103, the active antenna unit performs time calibration on the active antenna unit according to the absolute time;
and 104, completing a frame number configuration process by the active antenna unit according to the calibrated time, thereby realizing frame synchronization with the baseband unit.
In this embodiment of the present invention, the Active antenna Unit may be an AAU (Active antenna Unit) in the fifth generation communication technology, or may also be a radio Remote Unit rru (radio Remote Unit), and the Baseband Unit may be a BBU (Building base band Unit), or may also be a generic name of a CU (Centralized Unit) and a DU (Distributed Unit) in the fifth generation communication technology, which is not limited herein.
In the embodiment of the present invention, the frame number refers to a half frame number, that is, the frame number is counted according to a half frame.
In step 101, the active antenna unit receives a frame synchronization message sent by the baseband unit, and in the embodiment of the present invention, the active antenna unit and the baseband unit perform message transmission through a service channel IQ; optionally, in this embodiment of the present invention, the active antenna unit acquires the frame synchronization message sent by the baseband unit through the IR interface.
Optionally, in step 101, the frame synchronization information sent by the baseband unit is sent to the active antenna unit when the baseband unit performs even-second frame number configuration.
In step 102, the active antenna unit first determines whether a frame number in the frame synchronization message is the same as a frame number generated by the active antenna unit body, and determines a frame number determined by the baseband unit when the frame number in the frame synchronization message is different from the frame number determined by the active antenna unit body.
In the embodiment of the invention, the frame number determined by the baseband unit is converted through the absolute second time of the baseband unit, and the baseband unit is subjected to time calibration, so in the embodiment of the invention, the default frame number of the baseband unit is the correct frame number, when the frame number generated by the active antenna unit body is inconsistent with the frame number generated by the baseband unit, the active antenna unit is considered to need to reconfigure the frame number, and if the frame number generated by the active antenna unit body is consistent with the frame number generated by the baseband unit, the active antenna is determined not to need to carry out frame synchronization, and the frame number generated by the active antenna unit can be continuously delayed.
In step 102, the active antenna unit determines an absolute time in the acquired frame synchronization message, where in the embodiment of the present invention, the absolute time is a time after the baseband unit and the clock are calibrated, and may be a GPS absolute time, or an absolute time of a 1588 master clock, or an absolute time of another time reference.
In step 103, after the active antenna unit obtains the absolute time sent by the baseband unit, the active antenna unit performs time calibration on the body according to the absolute time.
Optionally, in this embodiment of the present invention, the active antenna unit performs time calibration according to the pulse per second of the absolute time and the interrupt generated by the active antenna unit.
Optionally, in the embodiment of the present invention, the active antenna unit aligns the pulse per second of the absolute time and the rising edges of the timeslot interrupt, the 5ms interrupt, and the 80ms interrupt generated by the active antenna unit body, so as to implement the time calibration of the active antenna unit.
In step 104, after the active antenna unit performs time calibration, the active antenna unit determines a new frame number according to the calibrated time, so as to implement frame synchronization with the baseband unit.
Optionally, in the embodiment of the present invention, the active antenna unit determines the sync frame number according to the calibrated time, the frame number configuration period, and the correspondence between the time and the frame number, where the sync frame number is a frame number corresponding to the arrival of the next frame number configuration period; and the active antenna unit completes frame number configuration according to the synchronous frame number.
That is to say, in the embodiment of the present invention, since the frame number configuration requires time to be written into the register, the active antenna element determines the synchronization frame number according to the calibrated time and the frame number configuration period and the corresponding relationship between the time and the frame number, for example, the frame number configuration period is 85ms, the current time is T1, and the active antenna element determines the frame number corresponding to the arrival of the next frame number configuration period according to the corresponding relationship between the time of T1+85ms and the synchronization frame number.
Optionally, in the embodiment of the present invention, the active antenna unit converts a half frame number from 0 to 2048 according to the absolute time and the frame number configuration period, where the half frame number is a new sync frame number, and the sync frame number is consistent with the sync frame number generated by the baseband unit.
Optionally, in step 103, the active antenna unit includes a first processing module and a second processing module, after the active antenna unit determines that frame synchronization is required, the first processing module performs time calibration on the active antenna unit according to absolute time, and the second processing module determines a synchronization frame number according to a calibrated time, a frame number configuration period, and a correspondence between the time and the frame number.
In addition, in the embodiment of the present invention, the first processing module sends a response message to the second processing module when the set time arrives, and notifies the second processing module that the set time arrives, and the second processing module sends the determined synchronization frame number to the first processing module after receiving the response message, thereby implementing frame number configuration of the active antenna unit.
Optionally, in an embodiment of the present invention, the active antenna unit includes a master processor and a slave processor, and the master processor includes the first processing module and the second processing module.
In the embodiment of the invention, when the second processing module sends the synchronous frame number to the first processing module, the synchronous frame number is also sent to the slave processor, so that the slave processor of the active antenna unit completes frame number synchronization.
Optionally, in this embodiment of the present invention, the first processing module is a driver of the main processor, and the second processing module is an SFN module of the main processor.
Optionally, in the embodiment of the present invention, after the active antenna unit determines that frame synchronization is required, the second processing module calls the driver function to apply for notification of a time edge of a next frame number configuration period.
Optionally, in the embodiment of the present invention, since 80ms is required for calculating the frame number, and 5ms is required for writing the frame number into the register, the frame number configuration period is 85 ms.
In order to better explain the embodiment of the present invention, a synchronization method provided by the embodiment of the present invention is described below through a specific implementation scenario.
In the embodiment of the present invention, the first processing module of the active antenna unit is driven by a main processor of the active antenna unit, and the second processing module is a main processor SFN module, and the specific process is as shown in fig. 2:
step 201, a baseband unit sends a frame synchronization message to an active antenna unit through an IR data interface;
step 202, a main processor of the active antenna unit drives to acquire a half frame number and a second pulse of absolute time carried in a frame synchronization message;
step 203, the main processor of the active antenna unit drives and determines whether the field number generated by the active antenna unit body is inconsistent with the field number carried in the frame synchronization message;
step 204, the SFN module of the main processor applies for a notification of a time edge of a next frame number configuration period of 85ms by calling a driver function;
step 205, the main processor drives the time for calibrating the active antenna unit according to the second pulse of the absolute time and the 80ms, 5ms and 500 mus generated by the body;
step 206, after the main processor driver arrives at 85ms, sending a time edge notification to the main processor SFN module;
step 207, the main processor SFN module determines a half frame number that takes effect after 85ms according to the current time and 85ms time;
step 208, the SFN module of the main processor sends the determined half frame number to the main processor driver;
the master processor SFN module sends the determined field number to the slave processor, step 209.
In the above embodiment, the main processor SFN module and the main processor driver are parallel processing processes, the above steps are only identifiers describing the processes, and the step identifiers between the main processor SFN module and the main processor driver are not used as the standards of the sequence of steps.
Based on the same concept, an embodiment of the present invention further provides a synchronization apparatus, as shown in fig. 3, including:
a receiving unit 301, configured to receive a frame synchronization message sent by a baseband unit;
an obtaining unit 302, configured to obtain an absolute time in the frame synchronization message when it is determined that a frame number in the frame synchronization message is different from a frame number generated by the active antenna unit;
a time calibration unit 303, configured to perform time calibration on the active antenna unit according to the absolute time;
a frame synchronization unit 304, configured to complete a frame number configuration process according to the calibrated time, so as to implement frame synchronization with the baseband unit.
Further, the time calibration unit 303 is specifically configured to:
and performing time calibration according to the second pulse of the absolute time and the interrupt generated by the active antenna unit.
Further, the frame synchronization unit 304 is specifically configured to:
determining a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number, wherein the synchronous frame number is the corresponding frame number when the next frame number configuration period arrives;
and completing frame number configuration according to the synchronous frame number.
Further, the time calibration unit 303 is specifically configured to:
time calibration is carried out on the active antenna unit according to the absolute time;
the frame synchronization unit 304 is specifically configured to:
determining a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number;
determining a notification message according to the frame number configuration period, wherein the notification message is used for indicating the time calibration unit to send a response message to the frame synchronization unit when the set time arrives;
the time calibration unit 303 is specifically configured to:
according to the notification message, sending the response message to the frame synchronization unit when the set time is up;
the frame synchronization unit 304 is specifically configured to:
after receiving the response message, sending the synchronization frame number determined by the frame synchronization unit to the time calibration unit;
the time calibration unit 303 is specifically configured to:
and completing frame number configuration according to the synchronous frame number.
Further, the frame synchronization unit 304 is further configured to:
and sending the synchronous frame number to the slave equipment of the active antenna unit so that the slave equipment completes frame number synchronization.
Based on the same principle, the present invention also provides an electronic device, as shown in fig. 4, including:
the system comprises a processor 401, a memory 402, a transceiver 403 and a bus interface 404, wherein the processor 401, the memory 402 and the transceiver 403 are connected through the bus interface 404;
the processor 401 is configured to read the program in the memory 402, and execute the following method:
receiving, by the transceiver 403, a frame synchronization message transmitted by the baseband unit;
determining that a frame number in the frame synchronization message is different from a frame number generated by the active antenna unit, and acquiring absolute time in the frame synchronization message;
time calibration is carried out on the active antenna unit according to the absolute time;
and completing a frame number configuration process according to the calibrated time, thereby realizing the frame synchronization with the baseband unit.
Further, the processor 401 is specifically configured to:
and performing time calibration according to the second pulse of the absolute time and the interrupt generated by the active antenna unit.
Further, the processor 401 is specifically configured to:
determining a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number, wherein the synchronous frame number is the corresponding frame number when the next frame number configuration period arrives;
and completing frame number configuration according to the synchronous frame number.
Further, the processor 401 is specifically configured to:
time calibration is carried out on the active antenna unit according to the absolute time;
determining a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number;
determining a notification message according to the frame number configuration period, wherein the notification message is used for indicating the time calibration unit to send a response message to the frame synchronization unit when the set time arrives;
according to the notification message, sending the response message to the frame synchronization unit when the set time is up;
after receiving the response message, sending the synchronization frame number determined by the frame synchronization unit to the time calibration unit;
and completing frame number configuration according to the synchronous frame number.
The present application provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform any of the synchronization methods described above.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A method of synchronization, comprising:
the active antenna unit receives a frame synchronization message sent by the baseband unit;
the active antenna unit acquires absolute time in the frame synchronization message when determining that the frame number in the frame synchronization message is different from the frame number generated by the active antenna unit;
the active antenna unit carries out time calibration on the active antenna unit according to the absolute time;
and the active antenna unit completes the frame number configuration process according to the calibrated time, thereby realizing the frame synchronization with the baseband unit.
2. The method of claim 1, wherein the active antenna unit time-calibrating the active antenna unit based on the absolute time comprises:
and the active antenna unit carries out time calibration according to the second pulse of the absolute time and the interrupt generated by the active antenna unit.
3. The method of claim 2, wherein the performing, by the active antenna element, a frame number configuration procedure according to the calibrated time comprises:
the active antenna unit determines a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number, wherein the synchronous frame number is the corresponding frame number when the next frame number configuration period arrives;
and the active antenna unit completes frame number configuration according to the synchronous frame number.
4. The method of claim 3, wherein the active antenna unit comprises a first processing module and a second processing module;
the active antenna unit time-calibrating the active antenna unit according to the absolute time, including:
the first processing module performs time calibration on the active antenna unit according to the absolute time;
the active antenna unit determines a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number, and the method comprises the following steps:
the second processing module determines a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number;
the active antenna unit completes the frame number configuration of the active antenna unit according to the synchronous frame number, and the method comprises the following steps:
the second processing module determines a notification message according to the frame number configuration cycle, wherein the notification message is used for indicating the first processing module to send a response message to the second processing module when the set time is reached;
the first processing module sends the response message to the second processing module when the set time is up according to the notification message;
after receiving the response message, the second processing module sends the synchronous frame number determined by the second processing module to the first processing module;
and the first processing module completes frame number configuration according to the synchronous frame number.
5. The method of claim 4, wherein the second processing module, after receiving the response message, further comprises:
and the second processing module sends the synchronous frame number to the slave equipment of the active antenna unit so as to enable the slave equipment to complete frame number synchronization.
6. A synchronization apparatus, comprising:
a receiving unit, configured to receive a frame synchronization message sent by a baseband unit;
an obtaining unit, configured to obtain an absolute time in the frame synchronization message when it is determined that a frame number in the frame synchronization message is different from a frame number generated by the active antenna unit;
the time calibration unit is used for carrying out time calibration on the active antenna unit according to the absolute time;
and the frame synchronization unit is used for completing a frame number configuration process according to the calibrated time so as to realize frame synchronization with the baseband unit.
7. The apparatus according to claim 6, wherein the time calibration unit is specifically configured to:
and performing time calibration according to the second pulse of the absolute time and the interrupt generated by the active antenna unit.
8. The apparatus of claim 7, wherein the frame synchronization unit is specifically configured to:
determining a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number, wherein the synchronous frame number is the corresponding frame number when the next frame number configuration period arrives;
and completing frame number configuration according to the synchronous frame number.
9. The apparatus according to claim 8, wherein the time calibration unit is specifically configured to:
time calibration is carried out on the active antenna unit according to the absolute time;
the frame synchronization unit is specifically configured to:
determining a synchronous frame number according to the calibrated time, the frame number configuration period and the corresponding relation between the time and the frame number;
determining a notification message according to the frame number configuration period, wherein the notification message is used for indicating the time calibration unit to send a response message to the frame synchronization unit when the set time arrives;
the time calibration unit is specifically configured to:
according to the notification message, sending the response message to the frame synchronization unit when the set time is up;
the frame synchronization unit is specifically configured to:
after receiving the response message, sending the synchronization frame number determined by the frame synchronization unit to the time calibration unit;
the time calibration unit is specifically configured to:
and completing frame number configuration according to the synchronous frame number.
10. The apparatus of claim 9, wherein the frame synchronization unit is further configured to:
and sending the synchronous frame number to the slave equipment of the active antenna unit so that the slave equipment completes frame number synchronization.
11. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-5.
12. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 5.
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