WO2022083561A1

WO2022083561A1 - Remote unit and time synchronization method therefor, systems, near-end unit, and storage medium

Info

Publication number: WO2022083561A1
Application number: PCT/CN2021/124542
Authority: WO
Inventors: 林衡华; 吴锦莲; 黄庆涛; 熊尚坤; 杜刚; 余兵才; 董哲; 魏垚
Original assignee: 中国电信股份有限公司
Priority date: 2020-10-22
Filing date: 2021-10-19
Publication date: 2022-04-28
Also published as: CN112261716A; CN112261716B

Abstract

The present invention relates to a remote unit and a time synchronization method therefor, systems, a near-end unit, and a storage medium. The time synchronization method for the remote unit comprises: the near-end unit obtains 5G frame synchronization information and 4G frame synchronization information; the near-end unit determines a mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information according to the 5G frame synchronization information and the 4G frame synchronization information; the near-end unit sends the mapping relationship to the remote unit; the remote unit obtains the 4G frame synchronization information; and the remote unit recovers the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship. According to the present invention, the remote unit and the near-end unit can use the 4G frame synchronization information as an anchor point for synchronization, so that the 5G switch control time is consistent with the synchronization precision of 4G signals, and the synchronization precision is high.

Description

Remote unit and time synchronization method and system thereof, near end unit and storage medium

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is based on the CN application number 202011139762.1 and the filing date is October 22, 2020, and claims its priority. The disclosure of the CN application is hereby incorporated into the present application as a whole.

technical field

The present disclosure relates to the field of mobile communications, and in particular, to a frequency synchronization method and system, a near-end computer, a remote computer and a storage medium.

Background technique

In the TDD (Time Division Duplexing) repeater distribution system, the remote unit needs time synchronization to control the switching time of the uplink and downlink switches. The existing solution is: one way is to detect the uplink and downlink switching time locally. ; Another way is to extract the synchronization information in the near-end machine, and transmit the signal to the far-end machine through the feeder cable.

SUMMARY OF THE INVENTION

According to an aspect of the present disclosure, there is provided a time synchronization method for a remote machine, comprising:

The near-end machine obtains 5G frame synchronization information and 4G frame synchronization information;

The near-end computer determines the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information according to the 5G frame synchronization information and the 4G frame synchronization information;

The near-end computer sends the mapping relationship to the far-end computer;

The remote machine obtains 4G frame synchronization information;

The remote machine restores the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship.

In some embodiments of the present disclosure, the 4G frame synchronization information is 4G network time synchronization information, and the 4G frame synchronization information includes 4G frame structure information.

In some embodiments of the present disclosure, the obtaining of the 4G frame synchronization information by the near-end machine includes: the near-end machine obtains the 4G frame synchronization information through a 4G terminal module of the near-end machine.

In some embodiments of the present disclosure, the obtaining of the 4G frame synchronization information by the remote machine includes: the remote machine obtains the 4G frame synchronization information through a 4G terminal module of the remote machine.

In some embodiments of the present disclosure, the 5G frame synchronization information includes 5G frame structure information, and the 5G frame synchronization information includes 5G uplink and downlink switching time point information of the near-end device.

In some embodiments of the present disclosure, obtaining the 5G frame synchronization information by the near-end machine includes:

Through the 5G terminal module, search for 5G signals in the network to obtain 5G frame synchronization information.

Remotely configure the 5G frame synchronization information of the current network through the device monitoring system.

In some embodiments of the present disclosure, the mapping relationship includes the frame header time difference between the 5G signal and the 4G signal, and the time point information of the 5G uplink and downlink switching of the near-end device.

In some embodiments of the present disclosure, the near-end computer determining the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information according to the 5G frame synchronization information and the 4G frame synchronization information includes: the near-end computer maps the 5G frame structure information to On the 4G frame structure information, the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information is determined.

In some embodiments of the present disclosure, restoring the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship includes:

The remote machine determines the frame header time of the 4G signal according to the 4G frame synchronization information;

The remote terminal determines the time point information of the 5G uplink and downlink switching of the remote terminal according to the frame header time of the 4G signal, the frame header time difference between the 5G signal and the 4G signal, and the 5G uplink and downlink switching time point information of the near terminal terminal.

In some embodiments of the present disclosure, the 5G uplink and downlink switching time point information includes the time point when the 5G uplink signal is turned on, the time point when the 5G uplink signal is turned off, the time point when the 5G downlink signal is turned on, and the time point when the 5G uplink signal is turned off.

In some embodiments of the present disclosure, the near-end machine maps 5G frame structure information to 4G frame structure information, and determining the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information includes:

Through the 4G terminal module and the 5G terminal module, the 5G signal and 4G signal in the network are searched, and the frame header time difference between the 5G signal and the 4G signal is determined.

According to the prior information of the network, the signal strength information of the network signal in different frequency bands is searched through the 4G terminal module, and the frame header time difference between the 5G signal and the 4G signal is inferred.

Through the device monitoring system, remotely configure and modify the frame header time difference between the 5G signal and the 4G signal.

According to another aspect of the present disclosure, there is provided a proximal machine, comprising:

5G signal acquisition module, used to obtain 5G frame synchronization information;

The near-end 4G terminal module is used to obtain 4G frame synchronization information;

The mapping relationship determination module is used to determine the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information according to the 5G frame synchronization information and the 4G frame synchronization information;

The mapping relationship sending module is used for sending the mapping relationship to the remote machine, instructing the remote machine to obtain the 4G frame synchronization information, and restoring the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship.

In some embodiments of the present disclosure, the 4G terminal module of the near-end machine is used to obtain 4G network time synchronization information, wherein the 4G frame synchronization information is 4G network time synchronization information, and the 4G frame synchronization information includes 4G frame structure information.

In some embodiments of the present disclosure, the 5G signal acquisition module is a 5G terminal module; the 5G terminal module is used to search for 5G signals in the network to obtain 5G frame synchronization information.

In some embodiments of the present disclosure, the 5G signal acquisition module is configured to receive 5G frame synchronization information of the current network remotely configured by the device monitoring system.

In some embodiments of the present disclosure, the mapping relationship determining module is configured to map the 5G frame structure information to the 4G frame structure information, and determine the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information.

In some embodiments of the present disclosure, the mapping relationship determination module is configured to search the 5G signal and the 4G signal in the network through the 4G terminal module and the 5G terminal module, and determine the frame header time difference between the 5G signal and the 4G signal.

In some embodiments of the present disclosure, the mapping relationship determination module is configured to search the signal strength information of the network signal in different frequency bands through the 4G terminal module according to the network prior information, and infer the frame header time difference between the 5G signal and the 4G signal.

In some embodiments of the present disclosure, the mapping relationship determination module is configured to receive the frame header time difference between the 5G signal and the 4G signal remotely configured and modified by the device monitoring system.

According to another aspect of the present disclosure, a remote machine is provided, comprising:

The mapping relationship receiving module is used to receive the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information sent by the near-end machine, wherein the mapping relationship is determined by the near-end machine according to the acquired 5G frame synchronization information and 4G frame synchronization information ;

The 4G terminal module of the remote machine is used to obtain 4G frame synchronization information;

The 5G synchronization information determination module is configured to restore the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship.

In some embodiments of the present disclosure, the 5G synchronization information determination module is configured to determine the frame header time of the 4G signal according to the 4G frame synchronization information; the frame header time of the 4G signal, the frame header time difference between the 5G signal and the 4G signal, the 5G uplink and downlink switching time point information, determine the 5G uplink and downlink switching time point information of the remote machine.

According to another aspect of the present disclosure, an indoor distribution system is provided, including the near-end machine according to any of the above embodiments and the remote machine according to any of the above-mentioned embodiments.

According to another aspect of the present disclosure, a 5G repeater system is provided, including the near-end unit as described in any of the foregoing embodiments and the remote unit as described in any of the foregoing embodiments.

According to another aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, implement the remote control according to any of the foregoing embodiments. Terminal time synchronization method.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present disclosure or related technologies more clearly, the following briefly introduces the accompanying drawings required in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only the For some of the disclosed embodiments, for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic diagram of some embodiments of a remote computer time synchronization method of the present disclosure.

FIG. 2 is a schematic diagram of other embodiments of the time synchronization method for a remote computer disclosed in FIG. 2 .

FIG. 3 is a schematic diagram of a mapping relationship between 5G frame synchronization information and 4G frame synchronization information in some embodiments of the present disclosure.

FIG. 4 is a schematic diagram of some embodiments of the disclosed proximal device.

FIG. 5 is a schematic diagram of some embodiments of the disclosed remote machine.

6 is a schematic diagram of some embodiments of the disclosed indoor distribution system.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses in any way. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

Meanwhile, it should be understood that, for the convenience of description, the dimensions of various parts shown in the drawings are not drawn according to the actual proportional relationship.

Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the authorized description.

In all examples shown and discussed herein, any specific value should be construed as illustrative only and not as limiting. Accordingly, other examples of exemplary embodiments may have different values.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

The inventor found through research that: the method of locally detecting the uplink and downlink switching time in the related technology has a delay in the detection time and the accuracy is difficult to guarantee; the related technology extracts the synchronization information in the near-end machine, and transmits the signal to the remote-end machine through the feeder cable. In this way, additional feeders are required and are easily distorted or interfered during transmission.

In view of at least one of the above technical problems, the present disclosure provides a remote machine and a time synchronization method and system thereof, a near-end machine and a storage medium. The remote and near-end machines can use 4G frame synchronization information as an anchor for synchronization, and 5G The switching control time is consistent with the synchronization accuracy of the 4G signal, and the synchronization accuracy is high.

FIG. 1 is a schematic diagram of some embodiments of a remote computer time synchronization method of the present disclosure. Preferably, this embodiment can be implemented by the near-end machine and the far-end machine of the present disclosure. The method includes the following steps 11-15, wherein:

Step 11, the near-end machine obtains the 5G frame synchronization information and the 4G frame synchronization information.

In some embodiments of the present disclosure, the obtaining of the 4G frame synchronization information by the near-end machine may include: the near-end machine obtains the 4G frame synchronization information through a 4G terminal module of the near-end machine.

In some embodiments of the present disclosure, the 5G frame synchronization information may include 5G frame structure information.

In some embodiments of the present disclosure, the 5G frame synchronization information may include 5G uplink and downlink switching time point information of the near-end device.

In some embodiments of the present disclosure, in step 11, the step of obtaining the 5G frame synchronization information by the near-end machine may include: searching for 5G signals in the network through a 5G terminal module to obtain the 5G frame synchronization information.

In some embodiments of the present disclosure, the 5G terminal module may be an external 5G module.

In some embodiments of the present disclosure, the 5G terminal module may be a 4G and 5G terminal chip module.

In other embodiments of the present disclosure, in step 11, the step of obtaining the 5G frame synchronization information by the near-end machine may include: remotely configuring the 5G frame synchronization information of the current network through a device monitoring system.

Step 12, the near-end computer determines the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information according to the 5G frame synchronization information and the 4G frame synchronization information.

In some embodiments of the present disclosure, step 12 may include: the near-end computer maps the 5G frame structure information to the 4G frame structure information, and determines the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information.

In some embodiments of the present disclosure, the mapping relationship may include an offset value between 5G frame synchronization information and 4G frame synchronization information, and 5G uplink and downlink switching time point information of the near-end device.

In some embodiments of the present disclosure, the offset value of the 5G frame synchronization information and the 4G frame synchronization information may be the frame header time difference between the 5G signal and the 4G signal.

In some embodiments of the present disclosure, the near-end machine maps the 5G frame structure information to the 4G frame structure information, and the step of determining the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information may include: using a 4G terminal The module and the 5G terminal module search for the 5G signal and 4G signal in the network, and determine the frame header time difference between the 5G signal and the 4G signal.

In other embodiments of the present disclosure, the near-end machine maps the 5G frame structure information to the 4G frame structure information, and the step of determining the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information may include: according to the network Prior information, the 4G terminal module searches for the signal strength information of the network signal in different frequency bands, and infers the frame header time difference between the 5G signal and the 4G signal.

In still other embodiments of the present disclosure, the near-end machine maps the 5G frame structure information to the 4G frame structure information, and the step of determining the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information may include: Monitor the system, remotely configure and modify the frame header time difference between 5G and 4G signals.

Step 13, the near-end machine sends the mapping relationship to the far-end machine.

Step 14, the remote terminal acquires 4G frame synchronization information.

Step 15, the remote terminal restores the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship.

In some embodiments of the present disclosure, step 15 may include step 151 and step 152, wherein:

Step 151, the remote terminal determines the frame header time of the 4G signal according to the 4G frame synchronization information.

Step 152, the remote terminal determines the 5G uplink and downlink switching time point information of the remote terminal according to the frame header time of the 4G signal, the frame header time difference between the 5G signal and the 4G signal, and the 5G uplink and downlink switching time point information of the near terminal terminal.

In some embodiments of the present disclosure, the 5G uplink and downlink switching time point information may include a 5G uplink signal turn-on time point, a 5G uplink signal turn-off time point, a 5G downlink signal turn-on time point, and a 5G uplink signal turn-off time point.

Based on the remote machine time synchronization method provided by the above embodiments of the present disclosure, 4G signals can be used, and the terminal chip module can be used at the far and near end machines to control the synchronization of the uplink and downlink switches of the 5G radio frequency unit.

The remote and near-end units in the above embodiments of the present disclosure use 4G frame synchronization information as the anchor point for synchronization, and the 5G switch control time is consistent with the synchronization accuracy of the 4G signal, and the synchronization accuracy is high.

FIG. 2 is a schematic diagram of other embodiments of the time synchronization method for a remote computer disclosed in FIG. 2 . Preferably, this embodiment can be implemented by the near-end machine and the far-end machine of the present disclosure. The near-end machine in the embodiment of FIG. 2 includes a 4G/5G terminal chip module of the near-end machine, and the remote machine includes a 4G terminal chip module of the far-end machine. The method includes the following steps S21-S23, wherein:

Step S21, the near-end machine 4G/5G terminal chip module obtains 5G frame synchronization information and 4G network time synchronization information.

Step S22, the near-end machine maps the 5G frame structure information to the 4G frame structure, and determines the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information; the near-end machine sends the mapping relationship to the far-end machine.

In some embodiments of the present disclosure, the mapping relationship may include the frame header time difference t1 of the 5G signal and the 4G signal, and the 5G uplink and downlink switching time point information t2 of the near-end device.

Step S23, the remote terminal obtains network time synchronization information through the remote terminal 4G terminal chip module, and determines the time point information of the 5G uplink and downlink switching of the remote terminal based on the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information.

In some embodiments of the present disclosure, step S23 may include: the remote machine 4G terminal chip module locally extracts the 4G signal frame header time T0; the remote machine terminal chip module extracts the 4G signal frame header time T0, the 5G signal and the The frame header time difference t1 of the 4G signal and the 5G uplink and downlink switching time point information t2 of the near-end machine determine the time point information T1 of the 5G uplink and downlink switching of the far-end machine.

In some embodiments of the present disclosure, step S23 may include: determining the 5G uplink and downlink switching time point information T1 of the remote terminal according to formula (1).

T1=T0+t1+t2 (1)

In the above embodiments of the present disclosure, the remote terminal only needs to use the 4G terminal module to parse the 4G frame header, and the remote terminal does not need to add an external 5G module, thereby reducing the cost.

In the above-mentioned embodiments of the present disclosure, the near-end computer simultaneously extracts the synchronization information of 5G and 4G, and calculates the offset value of the two; the remote end recovers the frame synchronization information of 5G according to the offset value and the 4G synchronization information.

The remote and near-end machines in the above embodiments of the present disclosure use the 4G frame synchronization information as the anchor point of synchronization, and digitize the synchronization time mapping information (the information can be packaged and transmitted in the remote management information if the real-time requirements are not high), and the remote-end recovery , thereby reducing the jitter and distortion caused by the direct transmission of the synchronization signal.

FIG. 3 is a schematic diagram of a mapping relationship between 5G frame synchronization information and 4G frame synchronization information in some embodiments of the present disclosure. Step S22 in the embodiment of FIG. 2 and step 12 in the embodiment of FIG. 1 may include: mapping the 5G frame structure timing to the 4G frame structure timing according to the obtained 5G frame structure information and the frame header difference between the 4G signal and the 5G signal, As shown in Figure 3.

As shown in Figure 3, the 5G frame structure in the system is: the uplink and downlink ratio is: DDDSUDDSUU; the special subframe ratio: 10:2:2; in the system, the 5G/4G signal frame header difference is: 4G frame header ratio 5G The frame header is advanced by deta_t nanoseconds, and the frame header is defined as a radio frame with a length of 10 milliseconds.

The frame header of the 4G signal is the starting position of subframe 0, and the frame header of the 5G signal is the starting position of time slot 0. The length of the radio frame in the 4G and 5G frame structures is 10 milliseconds, and the length of one subframe in the 4G frame structure is 10 milliseconds. is 1 millisecond, and the length of a time slot in the 5G frame structure is 0.5 milliseconds.

In the embodiment of FIG. 3 , the frame header of the 4G signal is deta_t nanoseconds before the frame header of the 5G signal.

In order to facilitate the control of the 5G radio frequency unit, the above embodiments of the present disclosure subdivide the 5G signal frame structure timing into 5G signal frame structure timing-uplink and 5G signal frame structure timing-downlink. The corresponding base station sends the wireless signal direction to the terminal.

According to the uplink and downlink ratio of 5G signals in the embodiment of FIG. 3 of the present disclosure, if the uplink and downlink ratio is DDDSUDDSUU within 5 milliseconds, then there are 4 segments of uplink transmission and 4 segments of downlink transmission in one wireless frame; 4 uplink signals need to be turned on Time points UO0~UO3, 4 uplink signal turn-off time points UC0~UC3; 4 downlink signal turn-on time points DO0~DO3, 4 uplink signal turn-off time points DC0~DC3; the above signal turn-on and turn-off time points are all mappings to the time point on the 4G timing.

FIG. 4 is a schematic diagram of some embodiments of the disclosed proximal device. As shown in FIG. 4 , the near-end machine may include a 5G signal acquisition module 41, a near-end machine 4G terminal module 42, a mapping relationship determination module 43 and a mapping relationship sending module 44, wherein:

The 5G signal acquisition module 41 is used to acquire 5G frame synchronization information.

In some embodiments of the present disclosure, the 5G signal acquisition module 41 may be a 5G terminal module; the 5G terminal module may be used to search for 5G signals in the network to obtain 5G frame synchronization information.

In some embodiments of the present disclosure, the 5G signal acquisition module 41 may be configured to receive 5G frame synchronization information of the current network remotely configured by the device monitoring system.

The 4G terminal module 42 of the near-end machine is used for acquiring 4G frame synchronization information.

In some embodiments of the present disclosure, the 4G terminal module of the near-end machine may be used to obtain 4G network time synchronization information.

In some embodiments of the present disclosure, the 4G terminal module 42 of the near-end machine may include a frame header acquisition module of a 4G signal, wherein the 4G terminal module 42 of the near-end machine may be used to perform a 4G network search through the 4G terminal module to obtain the network The frame header of the 4G signal.

The mapping relationship determining module 43 is configured to determine the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information according to the 5G frame synchronization information and the 4G frame synchronization information.

In some embodiments of the present disclosure, the mapping relationship determining module 43 may be configured to map the 5G frame structure information to the 4G frame structure information, and determine the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information.

In some embodiments of the present disclosure, the mapping relationship determination module 43 may be configured to search the 5G signal and the 4G signal in the network through the 4G terminal module and the 5G terminal module, and determine the frame header time difference between the 5G signal and the 4G signal.

In some embodiments of the present disclosure, the mapping relationship determination module 43 may be configured to search the signal strength information of the network signal in different frequency bands through the 4G terminal module according to the network prior information, and infer the frame header time difference between the 5G signal and the 4G signal.

In some embodiments of the present disclosure, the mapping relationship determination module 43 may be configured to receive the frame header time difference between the 5G signal and the 4G signal remotely configured and modified by the device monitoring system.

In some embodiments of the present disclosure, the mapping relationship determination module 43 may be a 4G/5G frame structure timing mapping module, wherein: a 4G/5G frame structure timing mapping module is used to obtain 5G frame structure information according to the relationship between 4G signals and 5G The frame header difference of the signal maps the 5G frame structure timing to the 4G frame structure timing.

The mapping relationship sending module 44 is configured to send the mapping relationship to the remote machine, instructing the remote machine to obtain the 4G frame synchronization information, and restore the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship.

In some embodiments of the present disclosure, as shown in FIG. 2 , the 5G signal acquisition module 41 , the near-end machine 4G terminal module 42 , the mapping relationship determination module 43 and the mapping relationship sending module 44 of the present disclosure may be implemented as near-end machine 4G/ 5G terminal chip module.

In some embodiments of the present disclosure, the 5G signal acquisition module 41 in the embodiment of FIG. 4 may be implemented as a 5G frame structure identification module. The 5G frame structure identification module is used to obtain 5G frame structure information. According to different application scenarios, the external 5G communication module can be used or set remotely through the monitoring system of the device.

In the scenarios of some embodiments of the present disclosure, for the 5G transformation of the indoor distribution system, a 5G module is attached to the near-end machine, and the 5G module obtains the 5G frame structure by searching for 5G signals in the network; The communication interface notifies the obtained 5G frame structure information to the remote machine, so that the remote machine also obtains the correct 5G frame structure information.

In the scenarios of other embodiments of the present disclosure, the 5G repeater system uses an external 5G module, and the 5G module obtains the 5G frame structure by searching for 5G signals in the network.

In the scenarios of other embodiments of the present disclosure, the 5G transformation of the indoor distribution system or the equipment such as the 5G repeater can remotely configure the 5G frame structure information of the current network through the monitoring system of the equipment; The communication interface between the near end and the far end notifies the far end of the obtained 5G frame structure information, so that the far end also obtains the correct 5G frame structure information.

In some embodiments of the present disclosure, the mapping relationship determination module 43 in the embodiment of FIG. 4 may include a 5G/4G signal frame header difference measurement module, wherein: a 5G/4G signal frame header difference measurement module is used for different application scenarios. , you can use an external 5G communication module, or be identified by the 4G module through the configured prior information, or you can directly configure it remotely through the device's monitoring system.

In the scenarios of some embodiments of the present disclosure, in the 5G transformation of the indoor distribution system, a 5G module is attached to the near-end machine, and the 5G module obtains the frame between the 5G signal and the 4G signal in the network by searching for the 5G signal and the 4G signal in the network. Header deviation; at the same time, the obtained frame header deviation information is notified to the far-end machine through the communication interface between the near-end machine and the far-end machine, so that the far-end machine also obtains the correct frame header deviation information.

In the scenarios of other embodiments of the present disclosure, the 5G repeater system uses an external 5G module, and the 5G module obtains the frame header deviation between the 5G signal and the 4G signal in the network by searching for the 5G signal and the 4G signal in the network. .

In the scenarios of still other embodiments of the present disclosure, the 5G transformation of the indoor distribution system or the equipment such as 5G repeater, according to the prior information of the network, use the 4G module to infer the network signal by searching for information such as the signal strength of the network signal in different frequency bands, etc. The frame header deviation between the 5G signal and the 4G signal in the medium; this first verification information can be remotely configured and modified through the device's monitoring system.

In the scenarios of still other embodiments of the present disclosure, the 5G transformation of the indoor distribution system or the equipment such as the 5G repeater directly configures and modifies the frame header deviation between the 5G signal and the 4G signal in the network through the monitoring system of the equipment.

Based on the near-end machine provided by the above embodiments of the present disclosure, the 4G frame synchronization information can be used as the anchor point for synchronization with the far-end machine, the 5G switch control time is consistent with the synchronization precision of the 4G signal, and the synchronization precision is high.

The above-mentioned embodiments of the present disclosure can utilize 4G signals, and use terminal chip modules to control the synchronization of uplink and downlink switches of 5G radio frequency units at the far and near end devices at the same time.

FIG. 5 is a schematic diagram of some embodiments of the disclosed remote machine. As shown in FIG. 5 , the remote terminal may include a mapping relationship receiving module 51, a remote terminal 4G terminal module 52 and a 5G synchronization information determining module 53, wherein:

The mapping relationship receiving module 51 is used to receive the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information sent by the near-end machine, wherein the mapping relationship is determined by the near-end machine according to the acquired 5G frame synchronization information and 4G frame synchronization information of.

The 4G terminal module 52 of the remote machine is used to obtain 4G frame synchronization information.

The 5G synchronization information determination module 53 is configured to restore the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship.

In some embodiments of the present disclosure, the 5G synchronization information determining module 53 may be configured to determine the frame header time of the 4G signal according to the 4G frame synchronization information; The 5G uplink and downlink switching time point information of the remote machine is determined, and the 5G uplink and downlink switching time point information of the remote machine is determined.

In some embodiments of the present disclosure, the 5G synchronization information determination module 53 can be used to locally extract the frame header time T0 of the 4G signal; the remote terminal chip module can extract the frame header time T0 of the 4G signal, the 5G signal and the frame of the 4G signal according to the frame header time T0 of the 4G signal. The head time difference t1 and the 5G uplink and downlink switching time point information t2 of the near-end machine determine the 5G uplink and downlink switching time point information T1 of the remote machine.

In some embodiments of the present disclosure, the 5G synchronization information determination module 53 may be configured to determine the 5G uplink and downlink switching time point information T1 of the remote terminal according to formula (1).

In some embodiments of the present disclosure, as shown in FIG. 2 , the mapping relationship receiving module 51 , the remote 4G terminal module 52 and the 5G synchronization information determining module 53 of the present disclosure may be implemented as remote 4G terminal chip modules.

Based on the above-mentioned embodiments of the present disclosure, the remote terminal only needs to use the 4G terminal module to parse the 4G frame header, and the remote terminal does not need to add an external 5G module, thereby reducing the cost.

The remote and near-end machines in the above-mentioned embodiments of the present disclosure use the 4G frame synchronization information as the synchronization anchor point, and digitize the synchronization time mapping information (the information can be packaged and transmitted in the remote management information if the real-time requirements are not high), and the remote-end recovery , thereby reducing the jitter and distortion caused by the direct transmission of the synchronization signal.

6 is a schematic diagram of some embodiments of the disclosed indoor distribution system. As shown in FIG. 6, the indoor distribution system may include a near-end machine 61 and a far-end machine 62, wherein:

The near-end machine 61 may be the near-end machine described in any of the foregoing embodiments (for example, the embodiment in FIG. 4 ).

The remote machine 62 may be the remote machine described in any of the foregoing embodiments (for example, the embodiment in FIG. 5 ).

In some embodiments of the present disclosure, as shown in FIG. 6 , in the near-end unit 61 and the far-end unit 62 , LO1 and LO2 are intrinsic frequencies, IF1 and IF2 are intermediate frequencies, and M1 and M2 are mixers.

In some embodiments of the present disclosure, as shown in FIG. 6 , the 5G Modem in the near-end machine 61 is an external 5G terminal module.

The near-end unit 61 may be connected to the far-end unit 62 through a passive distribution system 63 .

In some embodiments of the present disclosure, as shown in Figure 6, the indoor distribution system of the present disclosure may also include a device monitoring system 64, wherein:

The device monitoring system 64 is used to remotely configure the 5G frame structure information of the current network to the near-end machine 61; remotely configure and modify the frame header deviation between the 5G signal and the 4G signal in the near-end machine 61 in the network.

In some embodiments of the present disclosure, the device monitoring system 64 may be implemented as a cloud server.

Based on the indoor distribution system provided by the above embodiments of the present disclosure, the remote terminal only needs to use the 4G terminal module to parse the 4G frame header, and the remote terminal does not need to add an external 5G module, thereby reducing costs.

According to another aspect of the present disclosure, a 5G repeater system is provided, including the near-end machine described in any of the foregoing embodiments (eg, the embodiment of FIG. 4 ) and the near-end unit described in any of the foregoing embodiments (eg, the embodiment of FIG. 5 ) ) described in the remote unit.

In some embodiments of the present disclosure, the 5G repeater system of the present disclosure may further include a device monitoring system, wherein: the device monitoring system is used to remotely configure the 5G frame structure information of the current network to the near-end machine; remotely configure and modify the network The frame header deviation between the 5G signal and the 4G signal in the near-end machine.

In some embodiments of the present disclosure, the device monitoring system may be implemented as a cloud server.

Based on the 5G repeater system provided by the above embodiments of the present disclosure, the near-end machine and the far-end machine can use the 4G frame synchronization information as the synchronization anchor point, the 5G switch control time is consistent with the synchronization precision of the 4G signal, and the synchronization precision is high.

According to another aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions that, when executed by a processor, implement any of the foregoing embodiments (eg, FIG. 1 ). or the remote machine time synchronization method described in the embodiment of FIG. 2).

Based on the computer-readable storage medium provided by the above embodiments of the present disclosure, 4G signals can be used, and the terminal chip module can be used at the far and near end devices to control the synchronization of the uplink and downlink switches of the 5G radio frequency unit.

The near-end machine and the far-end machine in the above embodiments of the present disclosure can use the 4G frame synchronization information as the synchronization anchor point, the 5G switch control time is consistent with the synchronization precision of the 4G signal, and the synchronization precision is high.

The far and near units described above may be implemented as general purpose processors, programmable logic controllers (PLCs), digital signal processors (DSPs), application specific integrated circuits (ASICs) for performing the functions described in this application ), field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof.

So far, the present disclosure has been described in detail. Some details that are well known in the art are not described in order to avoid obscuring the concept of the present disclosure. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, etc.

The description of the present disclosure has been presented for purposes of example and description, and is not intended to be exhaustive or to limit the disclosure to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use.

Claims

A remote machine time synchronization method, comprising:

The near-end machine obtains 5G frame synchronization information and 4G frame synchronization information;

The near-end computer determines the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information according to the 5G frame synchronization information and the 4G frame synchronization information;

The near-end computer sends the mapping relationship to the far-end computer;

The remote machine obtains 4G frame synchronization information;

The remote machine restores the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship.
The remote machine time synchronization method according to claim 1, wherein the 4G frame synchronization information is 4G network time synchronization information, and the 4G frame synchronization information includes 4G frame structure information;

The obtaining of the 4G frame synchronization information by the near-end machine includes: the near-end machine obtains the 4G frame synchronization information through the 4G terminal module of the near-end machine;

The obtaining of the 4G frame synchronization information by the remote machine includes: the remote machine obtains the 4G frame synchronization information through the 4G terminal module of the remote machine.
The remote device time synchronization method according to claim 1 or 2, wherein the 5G frame synchronization information includes 5G frame structure information, and the 5G frame synchronization information includes 5G uplink and downlink switching time point information of the near-end device.
The remote device time synchronization method according to claim 1 or 2, wherein obtaining the 5G frame synchronization information by the near-end device comprises:

Through the 5G terminal module, search for 5G signals in the network to obtain 5G frame synchronization information;

or,

Remotely configure the 5G frame synchronization information of the current network through the device monitoring system.
The remote device time synchronization method according to claim 1 or 2, wherein the mapping relationship includes the frame header time difference between the 5G signal and the 4G signal, and the 5G uplink and downlink switching time point information of the near-end device;

The near-end computer determines the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information according to the 5G frame synchronization information and the 4G frame synchronization information. The mapping relationship between frame synchronization information and 4G frame synchronization information.
The remote machine time synchronization method according to claim 5, wherein the restoring the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship comprises:

The remote machine determines the frame header time of the 4G signal according to the 4G frame synchronization information;

The remote terminal determines the time point information of the 5G uplink and downlink switching of the remote terminal according to the frame header time of the 4G signal, the frame header time difference between the 5G signal and the 4G signal, and the 5G uplink and downlink switching time point information of the near terminal terminal.
The remote device time synchronization method according to claim 6, wherein the 5G uplink and downlink switching time point information includes the time point when the 5G uplink signal is turned on, the time point when the 5G uplink signal is turned off, the time point when the 5G downlink signal is turned on, and the time point when the 5G uplink signal is turned on. Closing time point.
The remote machine time synchronization method according to claim 5, wherein the near-end machine maps the 5G frame structure information to the 4G frame structure information, and determining the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information comprises:

Through the 4G terminal module and the 5G terminal module, search the 5G signal and 4G signal in the network, and determine the frame header time difference between the 5G signal and the 4G signal;

or,

According to the prior information of the network, the signal strength information of the network signal in different frequency bands is searched through the 4G terminal module, and the frame header time difference between the 5G signal and the 4G signal is inferred;

or,

Through the device monitoring system, remotely configure and modify the frame header time difference between the 5G signal and the 4G signal.
A near-end machine, comprising:

5G signal acquisition module, used to obtain 5G frame synchronization information;

The near-end 4G terminal module is used to obtain 4G frame synchronization information;

The mapping relationship determination module is used to determine the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information according to the 5G frame synchronization information and the 4G frame synchronization information;

The mapping relationship sending module is used for sending the mapping relationship to the remote machine, instructing the remote machine to obtain the 4G frame synchronization information, and restoring the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship.
The proximal unit of claim 9, wherein,

The 4G terminal module of the near-end machine is used to obtain 4G network time synchronization information, wherein the 4G frame synchronization information is 4G network time synchronization information, and the 4G frame synchronization information includes 4G frame structure information.
Proximal machine according to claim 9 or 10, wherein,

The 5G signal acquisition module is a 5G terminal module; the 5G terminal module is used to search for 5G signals in the network and obtain 5G frame synchronization information;

or,

The 5G signal acquisition module is used to receive the 5G frame synchronization information of the current network remotely configured by the device monitoring system.
The near-end device according to claim 9 or 10, wherein the mapping relationship includes the frame header time difference between the 5G signal and the 4G signal, and the 5G uplink and downlink switching time point information of the near-end device;

The mapping relationship determination module is used to map the 5G frame structure information to the 4G frame structure information, and determine the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information.
The proximal unit of claim 12, wherein,

The mapping relationship determination module is used to search the 5G signal and 4G signal in the network through the 4G terminal module and the 5G terminal module, and determine the frame header time difference between the 5G signal and the 4G signal;

or,

The mapping relationship determination module is used to search the signal strength information of the network signal in different frequency bands through the 4G terminal module according to the prior information of the network, and infer the frame header time difference between the 5G signal and the 4G signal;

or,

The mapping relationship determination module is used to receive the frame header time difference between the 5G signal and the 4G signal remotely configured and modified by the device monitoring system.
A remote machine, including:

The mapping relationship receiving module is used to receive the mapping relationship between the 5G frame synchronization information and the 4G frame synchronization information sent by the near-end machine, wherein the mapping relationship is determined by the near-end machine according to the acquired 5G frame synchronization information and 4G frame synchronization information ;

The 4G terminal module of the remote machine is used to obtain 4G frame synchronization information;

The 5G synchronization information determination module is configured to restore the 5G frame synchronization information according to the 4G frame synchronization information and the mapping relationship.
The remote unit according to claim 14, wherein,

The 5G synchronization information determination module is used to determine the 4G signal frame header time according to the 4G frame synchronization information; according to the 4G signal frame header time, the frame header time difference between the 5G signal and the 4G signal, and the 5G uplink and downlink switching time point information of the near-end machine, determine 5G uplink and downlink switching time point information of the remote machine.
An indoor distribution system, comprising a near-end unit as claimed in any one of claims 9-13 and a remote unit as claimed in claim 14 or 15.
A 5G repeater system, comprising the near-end unit as claimed in any one of claims 9-13 and the far-end unit as claimed in claim 14 or 15.
A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the remote computer time synchronization method according to any one of claims 1-8 is realized .