CN111371541A - Signal synchronization method, device, equipment and storage medium - Google Patents
Signal synchronization method, device, equipment and storage medium Download PDFInfo
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- CN111371541A CN111371541A CN202010172205.3A CN202010172205A CN111371541A CN 111371541 A CN111371541 A CN 111371541A CN 202010172205 A CN202010172205 A CN 202010172205A CN 111371541 A CN111371541 A CN 111371541A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0079—Receiver details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0079—Receiver details
- H04L7/0087—Preprocessing of received signal for synchronisation, e.g. by code conversion, pulse generation or edge detection
Abstract
The signal synchronization method, device, equipment and storage medium provided by the embodiment of the application comprise the following steps: setting an initial gain value of a user terminal according to a gain value in a pre-acquired database, wherein the database comprises a plurality of gain values obtained by system simulation, receiving data comprising a main synchronization signal according to the initial gain value, performing analog-to-digital conversion on the data, performing sliding correlation operation on the data after the analog-to-digital conversion and a main synchronization signal sequence generated by the user terminal to obtain a correlation peak value, and if the correlation peak value is greater than a preset value, determining that the synchronization of the main synchronization signal is successful. The embodiment of the application has the following beneficial effects: the initial gain value of the user terminal is set according to a plurality of gain values obtained by system simulation, and the synchronization success of the main synchronization signal is determined when the correlation peak value is larger than the preset value, so that the accuracy of the initial gain value is improved, and the synchronization success rate of the main synchronization signal is improved.
Description
Technical Field
The embodiment of the application relates to the technical field of wireless communication, in particular to a signal synchronization method, a signal synchronization device, signal synchronization equipment and a storage medium.
Background
In a New Radio (NR) 5G communication system, before a User Equipment (UE) establishes a communication connection with a base station, the base station may send a synchronization Signal Block (SSB Block) to the UE, where the SSB Block includes a Primary Synchronized Signal (PSS), a Secondary Synchronized Signal (SSS), and a Physical Broadcast Channel (PBCH) Signal, where the UE may obtain an identification number of a cell according to the PSS and the SSS, and then access the cell to establish a communication connection with the base station.
The PSS is a first synchronization signal to be received by the UE, and after the UE receives the PSS through a (Radio Frequency, RF) module, the UE sends the PSS to an analog-to-digital converter (ADC), so that the strength of a signal entering the ADC is within a normal range, and therefore, the RF module is required to perform Radio Frequency gain adjustment on the received PSS. When the signal intensity of the PSS entering the ADC is within the abnormal range, the correlation peak value calculated after the ADC may not meet the preset requirement, and the PSS synchronization fails, so that the identification number of the cell cannot be obtained through analysis. The currently adopted gain adjustment mode is as follows: and counting the signal intensity of other signals received in the previous period, calculating to obtain an analog Gain (Again) according to the signal intensity, and performing Gain adjustment on the received PSS by the RF module according to the calculated analog Gain.
However, since the signal strength of other signals received in the previous period of time has no direct relationship with the signal strength of the received PSS, the Again calculated according to the signal strength of other signals received in the previous period of time adjusts the currently received PSS, which may cause the signal strength of the PSS entering the ADC to be in an abnormal range, thereby causing the failure of PSS synchronization.
Disclosure of Invention
The application provides a signal synchronization method, a signal synchronization device and a signal synchronization storage medium, which are used for improving the synchronization success rate of a main synchronization signal and shortening the synchronization time.
In a first aspect, an embodiment of the present application provides a signal synchronization method, including:
setting an initial gain value of a user terminal according to a gain value in a pre-acquired database, wherein the database comprises a plurality of gain values obtained by system simulation;
receiving data including a primary synchronization signal according to the initial gain value;
performing analog-to-digital conversion on the data, and performing sliding correlation operation on the data after the analog-to-digital conversion and a main synchronization signal sequence generated by the user terminal to obtain a correlation peak value, wherein the correlation peak value is used for representing the similarity between the data after the analog-to-digital conversion and the main synchronization signal sequence;
and if the correlation peak value is larger than a preset value, determining that the synchronization of the primary synchronization signal is successful.
Further, if the correlation peak value is smaller than the preset value, the method further comprises the following steps:
(1) selecting other gain values from the database, and performing gain adjustment on the data according to the selected gain values to obtain gain-adjusted data;
(2) performing analog-to-digital conversion processing on the gain-adjusted data to obtain analog-to-digital converted data;
(3) performing sliding correlation operation on the data after the analog-to-digital conversion and the main synchronization signal sequence to obtain a new correlation peak value;
(4) and if the new correlation peak value is larger than the preset value, determining that the synchronization of the primary synchronization signal is successful.
Further, the method further comprises:
and if the new correlation peak value is smaller than the preset value, determining that the synchronization of the primary synchronization signal fails.
Further, the method further comprises:
and if the new correlation peak value is smaller than the preset value, repeating the steps (1) to (4) until the synchronization of the main synchronization signal is successful, or determining that the synchronization of the main synchronization signal fails after the times of selecting the gain value reach the preset times.
Further, the method further comprises:
presetting a plurality of signal intensity ranges and gain values corresponding to the signal intensity ranges;
for each signal intensity range, acquiring at least two analog data corresponding to the signal intensity range; wherein the at least two analog data are generated by simulating the data including the master synchronization signal, and the signal strengths of the at least two analog data are within the signal strength range;
respectively carrying out gain adjustment on the at least two pieces of analog data according to gain values corresponding to the signal intensity ranges to obtain at least two pieces of gain-adjusted analog data;
for each gain-adjusted analog data, performing sliding correlation operation on the gain-adjusted analog data and the main synchronization signal to obtain a target correlation peak value;
and if the target correlation peak value is larger than the preset value, creating the database according to the gain value, wherein the database comprises the gain value.
Further, if the target correlation peak value is smaller than a preset value, the method further comprises:
adjusting the gain value;
for each analog data in the at least two analog data, performing gain adjustment on the analog data according to the adjusted gain value to obtain a new target correlation peak value;
and if the new target correlation peak value is larger than the preset value, determining the adjusted gain value as the gain value corresponding to the signal intensity range, and creating the database according to the gain value corresponding to the signal intensity range.
Further, the plurality of signal strength ranges comprises a low signal strength range, a medium signal strength range, and a high signal strength range;
then the database includes: a first gain value corresponding to the high signal strength range, a second gain value corresponding to the intermediate signal strength range, and a third gain value corresponding to the low signal strength range; wherein the initial gain value is the second gain value.
In a second aspect, an embodiment of the present application provides a signal synchronization apparatus, including:
the processing module is used for setting an initial gain value of the user terminal according to a gain value in a pre-acquired database, wherein the database comprises a plurality of gain values obtained by system simulation;
a receiving module, configured to receive data including a primary synchronization signal according to the initial gain value;
the processing module is further configured to perform analog-to-digital conversion on the data, and perform sliding correlation operation on the analog-to-digital converted data and a main synchronization signal sequence generated by the user terminal to obtain a correlation peak value, where the correlation peak value is used to indicate a similarity between the analog-to-digital converted data and the main synchronization signal sequence;
and the determining module is used for determining that the synchronization of the primary synchronization signal is successful when the correlation peak value is larger than a preset value.
Further, if the correlation peak is smaller than the preset value, the processing module is further configured to:
(1) selecting other gain values from the database, and performing gain adjustment on the data according to the selected gain values to obtain gain-adjusted data;
(2) performing analog-to-digital conversion processing on the gain-adjusted data to obtain analog-to-digital converted data;
(3) performing sliding correlation operation on the data after the analog-to-digital conversion and the main synchronization signal sequence to obtain a new correlation peak value;
(4) and if the new correlation peak value is larger than the preset value, determining that the synchronization of the primary synchronization signal is successful.
Further, the determining module is further configured to:
and if the new correlation peak value is smaller than the preset value, determining that the synchronization of the primary synchronization signal fails.
Further, the processing module is further configured to:
and if the new correlation peak value is smaller than the preset value, repeating the steps (1) to (4) until the synchronization of the main synchronization signal is successful, or determining that the synchronization of the main synchronization signal fails after the times of selecting the gain value reach the preset times.
Further, the processing module is further configured to:
presetting a plurality of signal intensity ranges and gain values corresponding to the signal intensity ranges;
for each signal intensity range, acquiring at least two analog data corresponding to the signal intensity range; wherein the at least two analog data are generated by simulating the data including the master synchronization signal, and the signal strengths of the at least two analog data are within the signal strength range;
respectively carrying out gain adjustment on the at least two pieces of analog data according to gain values corresponding to the signal intensity ranges to obtain at least two pieces of gain-adjusted analog data;
for each gain-adjusted analog data, performing sliding correlation operation on the gain-adjusted analog data and the main synchronization signal to obtain a target correlation peak value;
and if the target correlation peak value is larger than the preset value, creating the database according to the gain value, wherein the database comprises the gain value.
Further, if the target correlation peak is smaller than the preset value, the processing module is further configured to:
adjusting the gain value;
for each analog data in the at least two analog data, performing gain adjustment on the analog data according to the adjusted gain value to obtain a new target correlation peak value;
and if the new target correlation peak value is larger than the preset value, determining the adjusted gain value as the gain value corresponding to the signal intensity range, and creating the database according to the gain value corresponding to the signal intensity range.
Further, the plurality of signal strength ranges comprises a low signal strength range, a medium signal strength range, and a high signal strength range;
then the database includes: a first gain value corresponding to the high signal strength range, a second gain value corresponding to the intermediate signal strength range, and a third gain value corresponding to the low signal strength range; wherein the initial gain value is the second gain value.
In a third aspect, an embodiment of the present application provides a user equipment, including:
the device comprises a memory, a processor, a transmitter and a receiver, wherein executable instructions of the processor are stored in the memory; wherein the processor is configured to perform the method of the first aspect via execution of the executable instructions.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the method of the first aspect.
The signal synchronization method, device, equipment and storage medium provided by the embodiment of the application comprise: setting an initial gain value of a user terminal according to a gain value in a pre-acquired database, wherein the database comprises a plurality of gain values obtained by system simulation, receiving data comprising a main synchronization signal according to the initial gain value, performing analog-to-digital conversion on the data, and performing sliding correlation operation on the data after the analog-to-digital conversion and a main synchronization signal sequence generated by the user terminal to obtain a correlation peak value, wherein the correlation peak value is used for representing the similarity between the data after the analog-to-digital conversion and the main synchronization signal sequence, and if the correlation peak value is greater than a preset value, determining that the main synchronization signal is successfully synchronized. The embodiment of the application has the following beneficial effects: the initial gain value of the user terminal is set according to a plurality of gain values obtained by system simulation, and the synchronization success of the main synchronization signal is determined when the correlation peak value is larger than the preset value, so that the accuracy of the initial gain value is improved, and the synchronization success rate of the main synchronization signal is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic view of an application scenario of a signal synchronization method according to an embodiment of the present application;
fig. 2 is a first flowchart illustrating a signal synchronization method according to an embodiment of the present application;
FIG. 3 is a diagram illustrating a database creation process provided by an embodiment of the present application;
fig. 4 is a second flowchart illustrating a signal synchronization method according to an embodiment of the present application;
FIG. 5 is a diagram illustrating a specific implementation process of signal synchronization provided herein;
fig. 6 is a schematic structural diagram of a signal synchronization apparatus according to an embodiment of the present application;
fig. 7 is a hardware schematic diagram of a user equipment according to an embodiment of the present application.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
The terms "first," "second," "third," and "fourth," if any, in the description and claims of this application and the above-described figures are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic view of an application scenario of the signal synchronization method provided in this embodiment, and as shown in fig. 1, the signal synchronization method provided in this embodiment may be applied to a 5G New Radio (NR) communication system or a future communication system, where the communication system relates to a base station and a User Equipment (UE).
Before the UE establishes a communication connection with the base station, the base station sends a synchronization information block including a primary synchronization signal to the UE, and in order to make the signal strength entering the ADC within a normal range, in the prior art, a gain value is calculated by using the signal strength of other signals received in a previous period of time, and the signal strength of the currently received primary synchronization signal is adjusted according to the gain value, where the primary synchronization signal is the first synchronization signal in the synchronization information block received by the UE.
It can be seen that the following drawbacks exist in the prior art:
because the signal strength of the primary synchronization signal has no direct relation with the signal strength of other signals received in the previous period, the gain value of the primary synchronization signal is adjusted by calculating the signal strength of other signals received in the previous period, which may cause the signal strength of the primary synchronization signal accessed to the analog-to-digital converter to be within an abnormal range, and thus the correlation peak value calculated after the analog-to-digital converter may not meet the preset requirement, thereby causing the synchronization failure of the primary synchronization signal.
In view of the above problems, in the embodiments of the present application, the initial gain value of the user terminal is set according to a plurality of gain values obtained by system simulation, and it is determined that the synchronization of the primary synchronization signal is successful when the correlation peak value is greater than the preset value.
A UE may refer to a wireless terminal, a device providing voice and/or other traffic data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem, among others. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein.
The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 2 is a first schematic flowchart of a signal synchronization method according to an embodiment of the present disclosure, as shown in fig. 2, the signal synchronization method according to the embodiment includes:
s101, setting an initial gain value of the user terminal according to a gain value in a database acquired in advance.
The user terminal is provided with a radio frequency module and an analog-to-digital converter, the user terminal can receive data through the radio frequency module, the analog-to-digital converter can perform analog-to-digital conversion on the received data, and the initial gain value of the user equipment is the initial gain value of the radio frequency module.
In practical applications, before the ue establishes a communication connection with the base station, the base station sends data including a primary synchronization signal, i.e., the synchronization information block in fig. 1, to the ue. In order to make the signal strength received by the analog-to-digital converter within the normal signal strength range, it is therefore necessary to set the gain value of the user equipment. When the signal strength received by the analog-to-digital converter is within the range of the abnormal signal strength, the correlation peak value obtained by calculating after the ADC may not meet the preset requirement, and the PSS synchronization fails, so that the identification number of the cell cannot be obtained by analysis.
In this embodiment, an initial gain value of the ue is set by using any one of gain values in a pre-obtained database, where the database includes a plurality of gain values obtained by system simulation, and each gain value corresponds to a signal strength range.
And S102, receiving data comprising the main synchronous signal according to the initial gain value.
S103, performing analog-to-digital conversion on the data, and performing sliding correlation operation on the data after the analog-to-digital conversion and a main synchronization signal sequence generated by the user terminal to obtain a correlation peak value.
After the initial gain value of the ue is set, the data including the primary synchronization signal may be received according to the initial gain value, that is, the data including the primary synchronization signal received from the base station is gain-adjusted according to the initial gain value.
Then, the data is subjected to analog-to-digital conversion through an analog-to-digital converter, and sliding correlation operation is performed on the data subjected to the analog-to-digital conversion and a main synchronization signal sequence generated by a user terminal to obtain a correlation peak value, wherein the correlation peak value is used for expressing the similarity between the data subjected to the analog-to-digital conversion and the main synchronization signal sequence. The specific process of the sliding correlation operation is similar to that of the prior art, and is not described herein again.
It should be noted that the primary synchronization signal sequence generated by the user terminal may be the primary synchronization signal sequence specified in the protocol.
It should be noted that, the higher the correlation peak value is, the more similar the data after the analog-to-digital conversion and the main synchronization signal sequence are, wherein, when the data after the analog-to-digital conversion and the main synchronization signal sequence are, the more similar the main synchronization signal in the data and the main synchronization signal sequence are, that is, the more accurate the initial gain value is set; the smaller the correlation peak value is, the more dissimilar the data after analog-to-digital conversion and the main synchronization signal sequence are, which indicates that the main synchronization signal in the data is more dissimilar to the main synchronization signal sequence, i.e. the initial gain value setting is not accurate enough.
Wherein, the inaccurate setting of the initial gain value includes two situations:
one is that the initial gain value is set to be too small, and the primary synchronization signal is weak, the more dissimilar the primary synchronization signal and the primary synchronization signal sequence is, the smaller the correlation peak value is.
One is that the initial gain value is set to be too large, the primary synchronization signal will be saturated, and the more dissimilar the primary synchronization signal is to the primary synchronization signal sequence, so that the smaller the correlation peak value is. For example, 8 bits represent 1 number x, which is normally represented when x < ═ 256, and once x >256 is saturated, it becomes x-256, and the signal strength is greatly reduced.
And S104, if the correlation peak value is larger than a preset value, determining that the synchronization of the primary synchronization signal is successful.
If the calculated correlation peak value is larger than the preset value, the user terminal is indicated to successfully receive the main synchronization signal, and the main synchronization signal is determined to be successfully synchronized. When the primary synchronization signal is successfully synchronized, the ue may also feed back a message that the primary synchronization signal is successfully synchronized to its physical layer, so that the physical layer starts receiving the secondary synchronization signal.
The signal synchronization method provided by the embodiment includes: setting an initial gain value of a user terminal according to a gain value in a pre-acquired database, wherein the database comprises a plurality of gain values obtained by system simulation, receiving data comprising a main synchronization signal according to the initial gain value, performing analog-to-digital conversion on the data, and performing sliding correlation operation on the data after the analog-to-digital conversion and a main synchronization signal sequence generated by the user terminal to obtain a correlation peak value, wherein the correlation peak value is used for representing the similarity between the data after the analog-to-digital conversion and the main synchronization signal sequence, and if the correlation peak value is greater than a preset value, determining that the main synchronization signal is successfully synchronized. The embodiment of the application has the following beneficial effects: the initial gain value of the user terminal is set according to a plurality of gain values obtained by system simulation, and the synchronization success of the main synchronization signal is determined when the correlation peak value is larger than the preset value, so that the accuracy of the initial gain value is improved, and the synchronization success rate of the main synchronization signal is improved.
In one implementation, prior to step S101, a database may also be created, as described in detail below in conjunction with fig. 3. Fig. 3 is a schematic diagram of a database creation process provided in an embodiment of the present application, and as shown in fig. 3, the database creation process specifically includes:
step 1, setting a plurality of signal intensity ranges and gain values corresponding to the signal intensity ranges.
The signal strength range may be a range in which the signal strength received by the ue is, and generally, the ue receives the weakest signal strength at the edge of the cell and receives the strongest signal strength at the middle of the cell.
In this step, a plurality of signal strength ranges and a gain value corresponding to each signal strength range may be set, illustratively, three signal strength ranges are set, including a low signal strength range, a middle signal strength range, and a high signal strength range, which may be, for example, -100 to-80, -80 to 0, 0 to 100.
Of course, the setting manner of the signal strength range includes, but is not limited to, the above illustration, and the setting manner of the signal strength range is not particularly limited in this embodiment.
Then, for each signal strength range, a corresponding gain value may be set, and usually, a smaller gain value may be used when the signal strength is strong, and a larger gain value may be used when the signal strength is weak. Taking the low signal strength range, the middle signal strength range, and the high signal strength range as an example, the gain values respectively corresponding to the low signal strength range, the middle signal strength range, and the high signal strength range may be, for example, a, b, and c, where a is greater than b and greater than c.
And 2, acquiring at least two analog data corresponding to each signal intensity range.
Wherein the at least two analog data are generated by simulating data including the master synchronization signal, and the signal strengths of the at least two analog data are within the signal strength range.
Optionally, there are two analog data with signal strength being a critical signal strength of the signal strength range in the at least two analog data.
In this step, the simulation software is provided with a signal generator, and at least two pieces of simulation data corresponding to the signal intensity range can be generated according to user operation.
And 3, acquiring at least two analog data after gain adjustment.
And aiming at each signal intensity range, respectively carrying out gain adjustment on at least two pieces of analog data according to the gain value corresponding to the signal intensity range to obtain at least two pieces of gain-adjusted analog data.
And 4, acquiring a target correlation peak value aiming at each gain-adjusted analog data.
And performing sliding correlation operation on the gain-adjusted analog data and the main synchronous signal sequence to obtain a target correlation peak value for each gain-adjusted analog data. Wherein the target correlation peak is used to represent the similarity between the gain-adjusted analog data and the primary synchronization signal. The specific process of the sliding correlation operation may refer to step S103.
The larger the target correlation peak value is, the more similar the analog data after gain adjustment and the main synchronous signal are; the smaller the target correlation peak value, the more dissimilar the gain adjusted analog data and the primary synchronization signal sequence. Specifically, reference may be made to the description of the correlation peak in step S102.
And 5, if the target correlation peak value is larger than a preset value, creating a database.
And if the target correlation peak value is larger than a preset value, creating a database according to the gain value, wherein the database comprises the gain value.
And 6, if the target correlation peak value is smaller than a preset value, adjusting the gain value.
And 7, aiming at each analog data in the at least two analog data, carrying out gain adjustment on the analog data according to the adjusted gain value to obtain a new target correlation peak value.
And 8, if the new target correlation peak value is larger than the preset value, determining the adjusted gain value as the gain value corresponding to the signal intensity range, and creating a database according to the gain value corresponding to the signal intensity range.
Specifically, if the target correlation peak value is smaller than the preset value, the gain value is adjusted to obtain an adjusted gain value, and for each analog data in the at least two analog data in step 3, the adjusted gain value is used to perform gain adjustment on the analog data to obtain a new target correlation peak value.
Then, whether the new target correlation peak value is greater than a preset value is judged, when the new correlation peak value is greater than the preset value, the adjusted gain value is determined as the gain value corresponding to the signal intensity range, and a database is created according to the gain value corresponding to the signal intensity range, wherein the database includes the gain value corresponding to the signal intensity range, that is, the gain value corresponding to the signal intensity range is not the gain value set in step 1 any more, but the adjusted gain value.
If the new correlation peak value is smaller than the preset value, repeating the steps 6-8 until a database is created according to the gain value corresponding to the signal intensity range.
In one implementation, the signal strength ranges include a low signal strength range, a medium signal strength range, and a high signal strength range; then the database includes: a first gain value corresponding to a high signal strength range, a second gain value corresponding to a medium signal strength range, and a third gain value corresponding to a low signal strength range.
Optionally, the initial gain value is a second gain value.
The first gain value corresponds to a low signal intensity range, the third gain value corresponds to a high signal intensity range, the low signal intensity range corresponds to a cell edge scene, the high signal intensity range corresponds to a cell middle scene, and the probability that the user terminal is positioned between the cell edge and the cell center is relatively large.
In this embodiment, the gain values corresponding to the plurality of signal strength ranges are obtained through system simulation, a database is created according to the gain values, the database includes the gain values corresponding to the plurality of signal strength ranges, and then the initial gain value of the user equipment is set according to the database.
On the basis of the foregoing embodiment, fig. 4 is a schematic flowchart of a second method for signal synchronization provided in the embodiment of the present application, and as shown in fig. 4, if a correlation peak is smaller than a preset value, the method further includes the following steps:
s201, selecting other gain values from the database, and performing gain adjustment on the data according to the selected gain values to obtain gain-adjusted data.
S202, performing analog-to-digital conversion processing on the gain-adjusted data to obtain the data after analog-to-digital conversion.
And S203, performing sliding correlation operation on the data subjected to analog-to-digital conversion and the main synchronization signal sequence to obtain a new correlation peak value.
And if the relevant peak value is smaller than the preset value, selecting other gain values from the database, performing gain adjustment on the data according to the selected gain value, and performing analog-to-digital conversion processing on the gain-adjusted data to obtain the data after the analog-to-digital conversion.
Then, performing sliding correlation operation on the data after the modulus conversion and the main synchronization signal sequence to obtain a new correlation peak value, and if the new correlation peak value is larger than a preset value, executing the step S204; if the new correlation peak is smaller than the predetermined value, step S205 or S206 is performed.
And S204, determining that the synchronization of the main synchronization signal is successful.
And S205, determining that the synchronization of the primary synchronization signal fails.
And S206, repeating the steps S201 to S204 until the synchronization of the main synchronization signal is successful, or determining that the synchronization of the main synchronization signal is failed when the times of selecting the gain value reaches a preset number.
If the new correlation peak value is larger than the preset value, the synchronization success of the primary synchronization signal is determined, and a message indicating the synchronization success of the primary synchronization signal can be fed back to the upper layer of the user equipment, so that the upper layer can accurately receive the secondary synchronization signal.
If the new correlation peak value is smaller than the preset value, the failure of the primary synchronization signal can be determined, and a message indicating the synchronization failure of the primary synchronization signal can be fed back to an upper layer.
Or, if the new correlation peak value is smaller than the preset value, the steps S201 to S204 may be further repeatedly executed, and other gain values are continuously selected from the database, and gain adjustment, analog-to-digital conversion and sliding correlation operation are performed according to the selected gain value until the finally obtained new correlation peak value is larger than the preset value, that is, the synchronization of the main synchronization signal is successful; or, determining that the primary synchronization signal fails when the number of times the gain value is selected reaches a preset number of times.
The preset number may be selected according to actual conditions, for example, 3 times. And when the preset times are 3 times and the finally obtained new correlation peak value is smaller than the preset value, determining that the synchronization of the main synchronization signal fails.
The signal synchronization method provided by the embodiment includes: if the correlation peak value is smaller than the preset value, selecting other gain values from the database, performing gain adjustment on the data according to the selected gain value to obtain gain-adjusted data, performing analog-to-digital conversion on the gain-adjusted data to obtain analog-to-digital converted data, performing sliding correlation operation on the analog-to-digital converted data and a main synchronization signal sequence to obtain a new correlation peak value, and if the new correlation peak value is larger than the preset value, determining that synchronization of the main synchronization signal is successful; if the new correlation peak value is smaller than the preset value, the synchronization failure of the main synchronization signal is determined, or other gain values are selected from the database repeatedly, and gain adjustment, analog-to-digital conversion and sliding correlation operation are carried out according to the selected gain values until the synchronization of the main synchronization signal is successful, or the synchronization failure of the main synchronization signal is determined when the times of selecting the gain values reach the preset times. The embodiment has the following beneficial effects: and when the correlation peak value obtained according to the initial gain value is smaller than the preset value, selecting other gain values from the database, and increasing the synchronization success rate of the main synchronization signal by trying to select the gain values.
Based on the scheme provided by the above embodiment, the signal synchronization method provided by the present application is illustrated below by specific examples.
In the examples below, the signal strength ranges include a low signal strength range, a medium signal strength range, and a high signal strength range; the database includes: a first gain value corresponding to the high signal strength range, a second gain value corresponding to the intermediate signal strength range, and a third gain value corresponding to the low signal strength range; wherein the initial gain value is the second gain value.
The creating process of the database specifically includes:
step 1, presetting a low signal intensity range, a middle signal intensity range, a high signal intensity range and corresponding gain values respectively.
The signal strength range is a signal strength range covered by a cell, and a gain value corresponding to each signal strength range may be selected empirically, but the selection principle may be: a smaller gain value may be used when the signal strength is stronger, and a larger gain value may be used when the signal strength is weaker. For example, the low signal strength range, the intermediate signal strength range, and the high signal strength range have gain values a, b, and c, respectively, where a is greater than b and greater than c.
And 2, acquiring two analog data corresponding to each signal intensity range.
The simulation data may be generated by simulating data including the master synchronization signal through simulation software.
For each signal strength range, the signal strength of the corresponding two analog data is two critical signal strengths of the signal strength range. For example, the low signal strength range is-100 to-80, the intermediate signal strength range is-80 to 0, the high signal strength range is 0 to 100; the signal intensities of the two analog data corresponding to the low signal intensity range are respectively-100 and-80, the signal intensities of the two analog data corresponding to the intermediate signal intensity range are respectively-80 and 0, and the signal intensities of the two analog data corresponding to the high signal intensity range are respectively 0 and 100.
In the following steps, analog data with a signal intensity of-100 is denoted as a, analog data with a signal intensity of-80 is denoted as B, analog data with a signal intensity of 0 is denoted as C, and analog data with a signal intensity of 100 is denoted as D.
And 3, aiming at each signal intensity range, performing gain adjustment on the two corresponding analog data according to the gain value corresponding to the signal intensity range to obtain two analog data after gain adjustment.
For the low signal strength range, A, B is gain-adjusted according to the gain value a corresponding to the signal strength range, and gain-adjusted a and B are obtained.
And for the central signal strength range, performing gain adjustment on B, C according to the gain value B corresponding to the signal strength range to obtain gain-adjusted B and C.
For the high signal strength range, C, D is gain-adjusted according to the gain value C corresponding to the signal strength range, and gain-adjusted C and D are obtained.
And 4, respectively carrying out sliding correlation operation on the two gain-adjusted analog data and the main synchronous signal sequence aiming at each signal intensity range to obtain two target correlation peak values.
And respectively carrying out sliding correlation operation on the gain-adjusted A and B in the low signal intensity range and the main synchronous signal sequence to obtain a target correlation peak value 1 and a target correlation peak value 2.
And respectively carrying out sliding correlation operation on the gain-adjusted B and C in the intermediate signal intensity range and the main synchronous signal sequence to obtain a target correlation peak value 3 and a target correlation peak value 4.
And respectively carrying out sliding correlation operation on the gain-adjusted C and D in the high signal intensity range and the main synchronous signal sequence to obtain a target correlation peak value 5 and a target correlation peak value 6.
And 5, aiming at each signal intensity range, if each target correlation peak value is larger than a preset value, acquiring a database according to the gain value, wherein the database comprises the gain value.
For the low signal strength range, if the target correlation peak 1 and the target correlation peak 2 are both greater than the preset value, the database includes the gain value a.
For a centered signal strength range, if both target correlation peak 3 and target correlation peak 4 are greater than a preset value, the database includes a gain value b.
For the high signal strength range, if the target correlation peak 5 and the target correlation peak 6 are both greater than the preset value, the database includes the gain value c.
In summary, the first gain value, the second gain value, and the third gain value in the database are a, b, and c, respectively.
And 6, if the target correlation peak value is smaller than the preset value, adjusting the gain value and acquiring a new target correlation peak value.
For the low signal intensity range, if the target correlation peak value 1 and/or the target correlation peak value is smaller than the preset value, the gain value a is adjusted to obtain a1, and steps 3-4 are executed to obtain a new target correlation peak value, if the new target peak values are all larger than the preset value, the gain value corresponding to the low signal intensity range is adjusted from a to a1, and the database is obtained according to the adjusted gain value a 1.
And if the new target correlation peak value is smaller than the preset value, repeating the step 6 until the database is created.
Similarly, for the middle signal strength range and the high signal strength range, the performing steps are similar to the process performed in the low signal strength range, and are not described herein again.
In summary, the first gain value, the second gain value, and the third gain value in the database are a1, b1, and c1, respectively.
Fig. 5 is a schematic diagram of a specific implementation process of signal synchronization provided in the present application, and as shown in fig. 5, the implementation process specifically includes:
step 1, determining a second gain value in the database as an initial gain value.
And 2, determining whether the first correlation peak value is larger than a preset value or not according to the second gain value.
Determining the second gain value as an initial gain value, receiving data which is sent by a base station and comprises a main synchronization signal according to the initial gain value, performing analog-to-digital conversion on the data, performing sliding correlation operation on the data after the analog-to-digital conversion and a locally stored main synchronization signal sequence to obtain a first correlation peak value, determining whether the first correlation peak value is larger than a preset value, and if so, executing the step 3; if not, executing the step 4.
And 3, feeding back a message that the synchronization of the main synchronization signal is successful to the physical layer.
And 4, selecting a first gain value from the database.
And if the first correlation peak value is larger than the preset value, determining that the synchronization of the primary synchronization signal is successful, and feeding back a message of successful synchronization of the primary synchronization signal to the physical layer so that the physical layer starts to receive the secondary synchronization signal.
And if the first correlation peak value is smaller than the preset value, selecting a first gain value from the database.
And 5, determining whether the second correlation peak value is larger than a preset value or not according to the first gain value.
Performing gain adjustment on the data according to the first gain value, performing analog-to-digital conversion on the gain-adjusted data to obtain analog-to-digital converted data, performing sliding correlation operation on the analog-to-digital converted data and a main synchronous signal sequence to obtain a second correlation peak value, determining whether the second correlation peak value is greater than a preset value, and if so, executing the step 3; if not, executing step 6.
And 6, selecting a third gain value from the database.
If the second correlation peak value is larger than the preset value, the synchronization success of the main synchronization signal is determined, a message indicating the synchronization success of the main synchronization signal is fed back to an upper layer, and the upper layer can prepare a synchronous auxiliary synchronization signal;
and if the second correlation peak value is smaller than the preset value, selecting a third gain value from the database.
And 7, determining whether the third determined correlation peak value is larger than a preset value or not according to the third gain value.
Performing gain adjustment on the data according to a third gain value, performing analog-to-digital conversion on the gain-adjusted data to obtain analog-to-digital converted data, performing sliding correlation operation on the analog-to-digital converted data and a main synchronous signal sequence to obtain a third correlation peak value, determining whether the third correlation peak value is greater than a preset value, and if so, executing the step 3; if not, go to step 8.
And 8, feeding back a message of synchronization failure of the primary synchronization signal to the physical layer.
Fig. 6 is a schematic structural diagram of a signal synchronization apparatus according to an embodiment of the present application, and as shown in fig. 6, the signal synchronization apparatus is integrated in a user equipment, and a signal synchronization apparatus 60 according to the embodiment includes:
a processing module 601, configured to set an initial gain value of a user terminal according to a gain value in a pre-obtained database, where the database includes multiple gain values obtained through system simulation;
a receiving module 602, configured to receive data including a primary synchronization signal according to the initial gain value;
the processing module 601 is further configured to perform analog-to-digital conversion on the data, and perform sliding correlation operation on the analog-to-digital converted data and a primary synchronization signal sequence generated by the user terminal to obtain a correlation peak value, where the correlation peak value is used to represent a similarity between the analog-to-digital converted data and the primary synchronization signal sequence;
a determining module 603, configured to determine that the synchronization of the primary synchronization signal is successful when the correlation peak is greater than a preset value.
Further, if the correlation peak is smaller than the preset value, the processing module 601 is further configured to:
(1) selecting other gain values from the database, and performing gain adjustment on the data according to the selected gain values to obtain gain-adjusted data;
(2) performing analog-to-digital conversion processing on the gain-adjusted data to obtain analog-to-digital converted data;
(3) performing sliding correlation operation on the data after the analog-to-digital conversion and the main synchronization signal sequence to obtain a new correlation peak value;
(4) and if the new correlation peak value is larger than the preset value, determining that the synchronization of the primary synchronization signal is successful.
Further, the determining module 603 is further configured to:
and if the new correlation peak value is smaller than the preset value, determining that the synchronization of the primary synchronization signal fails.
Further, the processing module is further configured to:
and if the new correlation peak value is smaller than the preset value, repeating the steps (1) to (4) until the synchronization of the main synchronization signal is successful, or determining that the synchronization of the main synchronization signal fails after the times of selecting the gain value reach the preset times.
Further, the processing module 602 is further configured to:
presetting a plurality of signal intensity ranges and gain values corresponding to the signal intensity ranges;
for each signal intensity range, acquiring at least two analog data corresponding to the signal intensity range; wherein the at least two analog data are generated by simulating the data including the master synchronization signal, and the signal strengths of the at least two analog data are within the signal strength range;
respectively carrying out gain adjustment on the at least two pieces of analog data according to gain values corresponding to the signal intensity ranges to obtain at least two pieces of gain-adjusted analog data;
for each gain-adjusted analog data, performing sliding correlation operation on the gain-adjusted analog data and the main synchronization signal to obtain a target correlation peak value;
and if the target correlation peak value is larger than the preset value, creating the database according to the gain value, wherein the database comprises the gain value.
Further, if the target correlation peak is smaller than the preset value, the processing module 602 is further configured to:
adjusting the gain value;
for each analog data in the at least two analog data, performing gain adjustment on the analog data according to the adjusted gain value to obtain a new target correlation peak value;
and if the new target correlation peak value is larger than the preset value, determining the adjusted gain value as the gain value corresponding to the signal intensity range, and creating the database according to the gain value corresponding to the signal intensity range.
Further, the plurality of signal strength ranges comprises a low signal strength range, a medium signal strength range, and a high signal strength range;
then the database includes: a first gain value corresponding to the high signal strength range, a second gain value corresponding to the intermediate signal strength range, and a third gain value corresponding to the low signal strength range; wherein the initial gain value is the second gain value.
The signal synchronization apparatus of this embodiment may execute the technical solution executed by the user equipment, and for the specific implementation process and technical principle, reference is made to the related description in the method described above, and details are not described here again.
Fig. 7 is a hardware schematic diagram of a user equipment according to an embodiment of the present application, and as shown in fig. 7, the user equipment includes:
a memory, a processor, a transmitter, and a receiver;
the memory stores executable instructions of the processor; wherein the processor is configured to perform the above-mentioned technical solution of the user equipment via executing the executable instructions.
The computer programs, computer instructions, etc. described above may be stored in one or more memories in a partitioned manner. And the computer programs, computer instructions, data, etc. described above may be invoked by a processor.
A processor for executing the computer program stored in the memory to implement the steps of the method according to the above embodiments.
Reference may be made in particular to the description relating to the preceding method embodiment.
The processor, the memory and the transceiver can be in a separate structure or in an integrated structure integrated together. When the processor, the memory, and the transceiver are independent structures, the processor, the memory, and the transceiver may be coupled by a bus.
In addition, an embodiment of the present application further provides a computer-readable storage medium, where a computer-executable instruction is stored in the computer-readable storage medium, and when at least one processor of the user equipment executes the computer-executable instruction, the technical solutions of the first base station and the second base station are executed.
Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in user equipment. Of course, the processor and the storage medium may reside as discrete components in a communication device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A method for signal synchronization, comprising:
setting an initial gain value of a user terminal according to a gain value in a pre-acquired database, wherein the database comprises a plurality of gain values obtained by system simulation;
receiving data including a primary synchronization signal according to the initial gain value;
performing analog-to-digital conversion on the data, and performing sliding correlation operation on the data after the analog-to-digital conversion and a main synchronization signal sequence generated by the user terminal to obtain a correlation peak value, wherein the correlation peak value is used for representing the similarity between the data after the analog-to-digital conversion and the main synchronization signal sequence;
and if the correlation peak value is larger than a preset value, determining that the synchronization of the primary synchronization signal is successful.
2. The method of claim 1, wherein if the correlation peak is less than the predetermined value, the method further comprises:
(1) selecting other gain values from the database, and performing gain adjustment on the data according to the selected gain values to obtain gain-adjusted data;
(2) performing analog-to-digital conversion processing on the gain-adjusted data to obtain analog-to-digital converted data;
(3) performing sliding correlation operation on the data after the analog-to-digital conversion and the main synchronization signal sequence to obtain a new correlation peak value;
(4) and if the new correlation peak value is larger than the preset value, determining that the synchronization of the primary synchronization signal is successful.
3. The method of claim 2, further comprising:
and if the new correlation peak value is smaller than the preset value, determining that the synchronization of the primary synchronization signal fails.
4. The method of claim 2, further comprising:
and if the new correlation peak value is smaller than the preset value, repeating the steps (1) to (4) until the synchronization of the main synchronization signal is successful, or determining that the synchronization of the main synchronization signal fails after the times of selecting the gain value reach the preset times.
5. The method according to any one of claims 1-4, further comprising:
presetting a plurality of signal intensity ranges and gain values corresponding to the signal intensity ranges;
for each signal intensity range, acquiring at least two analog data corresponding to the signal intensity range; wherein the at least two analog data are generated by simulating the data including the master synchronization signal, and the signal strengths of the at least two analog data are within the signal strength range;
respectively carrying out gain adjustment on the at least two pieces of analog data according to gain values corresponding to the signal intensity ranges to obtain at least two pieces of gain-adjusted analog data;
for each gain-adjusted analog data, performing sliding correlation operation on the gain-adjusted analog data and the main synchronization signal to obtain a target correlation peak value;
and if the target correlation peak value is larger than the preset value, creating the database according to the gain value, wherein the database comprises the gain value.
6. The method of claim 5, wherein if the target correlation peak is less than a predetermined value, the method further comprises:
adjusting the gain value;
for each analog data in the at least two analog data, performing gain adjustment on the analog data according to the adjusted gain value to obtain a new target correlation peak value;
and if the new target correlation peak value is larger than the preset value, determining the adjusted gain value as the gain value corresponding to the signal intensity range, and creating the database according to the gain value corresponding to the signal intensity range.
7. The method of claim 6, wherein the plurality of signal strength ranges comprises a low signal strength range, a medium signal strength range, and a high signal strength range;
then the database includes: a first gain value corresponding to the high signal strength range, a second gain value corresponding to the intermediate signal strength range, and a third gain value corresponding to the low signal strength range; wherein the initial gain value is the second gain value.
8. A signal synchronization apparatus, comprising:
the processing module is used for setting an initial gain value of the user terminal according to a gain value in a pre-acquired database, wherein the database comprises a plurality of gain values obtained by system simulation;
a receiving module, configured to receive data including a primary synchronization signal according to the initial gain value;
the processing module is further configured to perform analog-to-digital conversion on the data, and perform sliding correlation operation on the analog-to-digital converted data and a main synchronization signal sequence generated by the user terminal to obtain a correlation peak value, where the correlation peak value is used to indicate a similarity between the analog-to-digital converted data and the main synchronization signal sequence;
and the determining module is used for determining that the synchronization of the primary synchronization signal is successful when the correlation peak value is larger than a preset value.
9. A user device, comprising:
the device comprises a memory, a processor, a transmitter and a receiver, wherein executable instructions of the processor are stored in the memory; wherein the processor is configured to perform the method of any of claims 1 to 7 via execution of the executable instructions.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112235815A (en) * | 2020-10-15 | 2021-01-15 | 展讯通信（上海）有限公司 | Method, device and equipment for determining antenna gain |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013131895A (en) * | 2011-12-21 | 2013-07-04 | Panasonic Corp | Radio communication terminal device and gain setting method |
| CN104038264A (en) * | 2014-04-22 | 2014-09-10 | 中国水产科学研究院渔业工程研究所 | Short wave communication system power automatic control method |
| US10044403B1 (en) * | 2017-05-04 | 2018-08-07 | Samsung Electronics Co., Ltd | Apparatus and method for multi-beam initial synchronization for 5G-NR system |
| US20180234066A1 (en) * | 2017-02-15 | 2018-08-16 | Fci Inc. | Apparatus and method for automatic gain control |
| CN109412991A (en) * | 2018-10-08 | 2019-03-01 | 安徽传矽微电子有限公司 | A kind of narrowband Internet of Things narrowband primary synchronization signal detection method and its detection system |
| CN110365302A (en) * | 2019-06-14 | 2019-10-22 | 中国人民解放军空军工程大学 | A kind of communication system auto gain control method and device |
-
2020
- 2020-03-12 CN CN202010172205.3A patent/CN111371541B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013131895A (en) * | 2011-12-21 | 2013-07-04 | Panasonic Corp | Radio communication terminal device and gain setting method |
| CN104038264A (en) * | 2014-04-22 | 2014-09-10 | 中国水产科学研究院渔业工程研究所 | Short wave communication system power automatic control method |
| US20180234066A1 (en) * | 2017-02-15 | 2018-08-16 | Fci Inc. | Apparatus and method for automatic gain control |
| US10044403B1 (en) * | 2017-05-04 | 2018-08-07 | Samsung Electronics Co., Ltd | Apparatus and method for multi-beam initial synchronization for 5G-NR system |
| CN109412991A (en) * | 2018-10-08 | 2019-03-01 | 安徽传矽微电子有限公司 | A kind of narrowband Internet of Things narrowband primary synchronization signal detection method and its detection system |
| CN110365302A (en) * | 2019-06-14 | 2019-10-22 | 中国人民解放军空军工程大学 | A kind of communication system auto gain control method and device |
Non-Patent Citations (1)
| Title |
|---|
| INTEL CORPORATION: "R1-1904297 "Sidelink synchronization design for NR V2X communication"", 《3GPP TSG_RAN\WG1_RL1》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112235815A (en) * | 2020-10-15 | 2021-01-15 | 展讯通信（上海）有限公司 | Method, device and equipment for determining antenna gain |
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