CN114727368B - Rapid frequency sweeping method, device and medium - Google Patents
Rapid frequency sweeping method, device and medium Download PDFInfo
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- CN114727368B CN114727368B CN202210649388.2A CN202210649388A CN114727368B CN 114727368 B CN114727368 B CN 114727368B CN 202210649388 A CN202210649388 A CN 202210649388A CN 114727368 B CN114727368 B CN 114727368B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
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- H04B17/30—Monitoring; Testing of propagation channels
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present disclosure is directed to a method, apparatus, and medium for fast frequency sweeping. The frequency sweeping method relates to the technical field of communication, and comprises the following steps: adjusting automatic gain control AGC to a fixed value V agc (ii) a Acquiring the signal strength RSSI of each frequency point in a bandwidth to be scanned, and sequencing the frequency points according to the sequence from large to small of the signal strength RSSI to obtain a first sequence; determining frequency points of a first round of frequency sweeping based on the first sequence; carrying out target frequency point screening processing on the frequency points of the first round of frequency sweeping; if a target frequency point is determined in the frequency points of the first round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the first round of frequency sweeping, carrying out a second round of frequency sweeping. By adopting the method, the terminal can quickly determine the target frequency point, the power consumption of the user terminal is saved, and the user experience is improved.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, and a medium for fast frequency sweeping.
Background
The method includes that after a narrowband Band Ineternr of Things (NB-IoT) terminal is started initially or frequency points are not available for reuse, frequency sweeping needs to be carried out to find a target frequency point access network, in the existing frequency sweeping technology, frequency sweeping is carried out on each frequency point in a frequency Band (Band) corresponding to a user terminal, but the frequency sweeping is carried out on the target frequency point available to the user terminal, so that a large amount of time is spent, the user terminal cannot be enabled to be accessed to the network quickly, power consumption of the user terminal is wasted, and the service life of a battery can be shortened due to long starting state time.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a fast frequency sweeping method, apparatus, and medium.
According to a first aspect of the embodiments of the present disclosure, a fast frequency sweeping method is provided, which is applied to a terminal, and the fast frequency sweeping method includes:
adjusting automatic gain control AGC to a fixed value V agc ；
Acquiring the signal strength RSSI of each frequency point in a bandwidth to be scanned, and sequencing the frequency points according to the sequence of the signal strength RSSI from large to small to obtain a first sequence;
determining frequency points of a first round of frequency sweeping based on the first sequence;
carrying out target frequency point screening processing on the frequency points of the first round of frequency sweeping;
if a target frequency point is determined in the frequency points of the first round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the first round of frequency sweeping, carrying out a second round of frequency sweeping.
In some embodiments, the determining frequency points for a first round of frequency sweeps based on the first sequence includes:
determining the first N1 frequency points in the first sequence as the frequency points of the first round of frequency sweeping, wherein N1 is smaller than N2, and N2 is the number of all frequency points contained in the first sequence;
wherein the first round of frequency sweeping further comprises: and determining that the fixed combination times is C1, and the threshold of the related parameter of the narrowband primary synchronization signal corresponding to the first round of frequency sweeping is ThrNpss1 and the threshold of the related parameter of the narrowband secondary synchronization signal is ThrNsss 1.
In some embodiments, the target frequency point screening process includes:
taking a first frequency point of a plurality of frequency points to be scanned as a current frequency point;
the following is performed in a loop:
adjusting the current frequency point to automatic gain control AGC; acquiring related parameters of a narrow-band main synchronizing signal and related parameters of a narrow-band auxiliary synchronizing signal of the current frequency point; and determining whether the current frequency point is a target frequency point or not based on the narrowband main synchronizing signal parameter and the narrowband auxiliary synchronizing signal related parameter of the current frequency point, and taking the next frequency point in the plurality of frequency points to be scanned as the current frequency point when the current frequency point is not the target frequency point.
In some embodiments, the determining whether the current frequency point is a target frequency point based on the narrowband primary synchronization signal parameter and the narrowband secondary synchronization signal related parameter of the current frequency point includes:
judging whether the related parameter of the narrow-band main synchronizing signal of the current frequency point is larger than the related parameter threshold of the narrow-band main synchronizing signal corresponding to the current round of frequency sweep, and obtaining a first judgment result;
if the first judgment result is negative, determining that the current frequency point is not the target frequency point;
if the first judgment result is yes, continuously judging whether the related parameter of the narrowband auxiliary synchronizing signal of the current frequency point is larger than the related parameter threshold of the narrowband auxiliary synchronizing signal corresponding to the current round of sweep frequency, and obtaining a second judgment result;
if the second judgment result is yes, determining the current frequency point as the target frequency point;
and if the second judgment result is negative, determining that the current frequency point is not the target frequency point.
In some embodiments, the second round of sweeping comprises:
acquiring all frequency points in the sequence as frequency points of the second round of frequency sweeping;
determining a fixed combination frequency C2, and a narrowband primary synchronization signal related parameter threshold ThrNpss2 and a narrowband secondary synchronization signal related parameter threshold ThrNsss2 corresponding to the second round of frequency sweeping;
all the frequency points in the sequence are sequentially divided into S2 groups, and each group of frequency points is sequentially subjected to the target frequency point screening treatment;
if the target frequency point is determined in the second round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the second round of frequency sweeping, carrying out a third round of frequency sweeping.
In some embodiments, the second round frequency sweep further comprises:
and storing the related parameters of the narrow-band main synchronizing signal of each frequency point in each group in the screening process of the target frequency point.
In some embodiments, the third round of frequency sweeping comprises:
sequencing all frequency points of the stored related parameter values of the narrow-band main synchronizing signal according to the sequence of the related parameter values of the narrow-band main synchronizing signal from large to small to obtain a second sequence;
determining the first N3 frequency points in the second sequence, determining that the fixed merging time is C3, and a narrowband primary synchronization signal related parameter threshold ThrNpss3 and a narrowband secondary synchronization signal related parameter threshold ThrNsss3 which correspond to the third round of frequency sweep;
dividing the N3 frequency points into S3 groups, and sequentially screening the target frequency points for each group of frequency points;
if the target frequency point is determined in the third round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the third round of frequency sweeping, carrying out fourth round of frequency sweeping.
In some embodiments, the fourth sweep comprises:
acquiring all N4 frequency points in the second sequence, wherein N4 is the frequency point of all the stored related parameter values of the narrowband master synchronization signal;
determining a fixed combination frequency as C4, and a narrowband primary synchronization signal related parameter threshold ThrNpss4 and a narrowband secondary synchronization signal related parameter threshold ThrNsss4 corresponding to the fourth round of frequency sweep;
dividing the N4 frequency points into S4 groups, and sequentially screening the target frequency points for each group of frequency points;
if the target frequency point is determined in the fourth frequency sweep, ending the frequency sweep; and reporting that the frequency sweeping fails if the target frequency point is not determined in the fourth frequency sweeping.
According to a second aspect of the embodiments of the present disclosure, there is provided a fast frequency sweeping apparatus, including:
an adjustment module configured to adjust the automatic gain control AGC to a fixed value V agc ；
The acquisition module is configured to acquire the signal strength RSSI of each frequency point in the bandwidth to be scanned, and sequence the frequency points according to the sequence of the signal strength RSSI from large to small to obtain a first sequence;
a determination module configured to determine frequency points for a first round of frequency sweeps based on the first sequence;
the processing module is used for carrying out target frequency point screening processing on the frequency points of the first round of frequency sweeping; if the target frequency point is determined in the frequency points of the first round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the first round of frequency sweeping, carrying out a second round of frequency sweeping.
According to a third aspect of the embodiments of the present disclosure, there is provided a fast frequency sweeping apparatus, including:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the fast frequency sweep method as defined in any of the above.
According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having instructions which, when executed by a processor of a communication device, enable the communication device to perform the fast frequency sweep method as defined in any one of the above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
according to the method, the frequency points are sequenced from large to small according to the signal strength RSSI of the frequency points to obtain a first sequence, and the frequency points of the first round of frequency sweeping are determined based on the signal strength RSSI, so that the frequency points can be found out quickly. The terminal can quickly determine the target frequency point, the power consumption of the user terminal is saved, and the user experience is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flow diagram illustrating a fast frequency sweep method in accordance with an exemplary embodiment.
Fig. 2 is a flow diagram illustrating a fast frequency sweep method in accordance with an exemplary embodiment.
Fig. 3 is a schematic diagram of a fast frequency sweeping apparatus according to an exemplary embodiment.
Fig. 4 is a block diagram illustrating a fast frequency sweep apparatus according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
With regard to the apparatus in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be described in detail here.
The NB-IOT is one of the mainstream technologies of the 5G Internet of things and has the characteristics of wide coverage, low power consumption and wide connection. When the terminal equipment starts to communicate after being awakened by dormancy, the power consumption reaches a peak value, so that the power consumption of the user terminal can be reduced by quickly finding out the target frequency point and completing data transmission after the terminal equipment is awakened, and the longer the time in the power-on state is, the greater the damage to a battery is. Therefore, when the network is initially started and the memory frequency point is not available any more, the quick frequency sweeping plays an important role in finding the available frequency point near the user terminal and quickly accessing the core network.
The number of available frequency points near a general user terminal is not too many, and is generally several to ten or more, for example, the number of frequency points of Band5 is about 250, and the number of frequency points of Band8 is about 350, but the available frequency points only occupy a very small part, and only 2-4 frequency points are arranged in most local frequency points in actual measurement.
The existing frequency sweeping technology basically tries for each frequency point, and tries for a Narrowband Primary Synchronization Signal (NPSS) and a Narrowband Secondary Synchronization Signal (NSSS) in correlation, which is completely unnecessary and wastes a lot of time, and the rssi (received Signal strength indicator) of a frequency point with a Signal and a frequency point without a Signal are different from each other, and the peak-to-average ratio related to the Synchronization Signal is also greatly different.
In order to solve the problems in the related art, an embodiment of the present disclosure provides a fast frequency sweeping method, which is applied to a terminal, and as shown in fig. 1, the method includes:
102, acquiring the signal strength RSSI of each frequency point in a bandwidth to be scanned, and sequencing the frequency points according to the sequence of the signal strength RSSI from large to small to obtain a first sequence;
103, determining the frequency point of the first round of frequency sweeping based on the first sequence;
104, performing target frequency point screening processing on the frequency points of the first round of frequency sweeping;
105, if a target frequency point is determined in the frequency points of the first round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the first round of frequency sweeping, carrying out a second round of frequency sweeping.
In step 101, the automatic gain control AGC is adjusted to a fixed value V agc In which V is agc May be the maximum value used or may be defined according to the particular signal strength situation.
In step 102, it is known from past experience that the greater the strength RSSI of a frequency point, the greater the probability that the frequency point is a target frequency point, and therefore the frequency points in the bandwidth to be scanned are sorted in the order of the signal strength RSSI of the frequency point from large to small.
In step 103, the frequency point of the first frequency sweep is determined based on the number of the first sequences or the signal strength RSSI value of the frequency point.
In step 104, the screening process of the target frequency point includes determining the related parameters of the narrowband primary synchronization signal and the related parameters of the narrowband secondary synchronization signal for the current frequency point, and determining the current frequency point as the target frequency point when the related parameters meet the requirements.
By adopting the method, the frequency point of the first frequency sweep is determined based on the signal strength RSSI of the frequency point, so that the determination time of the target frequency point is accelerated.
In an exemplary embodiment, the determining frequency points of a first round of frequency sweeping based on the first sequence includes:
determining the first N1 frequency points in the first sequence as the frequency points of the first round of frequency sweeping, wherein N1 is smaller than N2, and N2 is the number of all frequency points contained in the first sequence;
wherein, the first round frequency sweep further comprises: and determining that the fixed combination times is C1, and the threshold of the related parameter of the narrowband primary synchronization signal corresponding to the first round of frequency sweeping is ThrNpss1 and the threshold of the related parameter of the narrowband secondary synchronization signal is ThrNsss 1.
In this embodiment, the relationship between N1 and N2 may be N1/N2=1/5, and of course, the relationship between N1 and N2 may also be determined according to the actual situation of local network frequency point arrangement, or the first N1 frequency points in the first sequence may be determined according to the signal strength RSSI value, for example, a signal strength RSSI threshold is set, and the frequency point in the first sequence corresponding to the signal strength RSSI value greater than or equal to the signal strength RSSI threshold is the frequency point of the first round of frequency sweeping.
The fixed combining times are used for NPSS related use, the combining times are doubled for different combining gains corresponding to different fixed combining times, and the corresponding combining gain is increased by 3dB, for example, the fixed combining times are adjusted from 2 to 4, and at this time, the combining gain corresponding to the fixed combining times 4 is increased by 3dB for the gain corresponding to the fixed combining times 2. In addition, the merging times can be determined according to the signal intensity conditions of the frequency points to be swept, for a plurality of frequency points to be swept, when the signal intensity RSSI of the frequency points is good, the value of the fixed merging times can be correspondingly small, the value of the fixed merging times is small, and the process of screening and processing the target frequency points is accelerated, so that the purpose of quickly sweeping the frequency is achieved. For example, the frequency point of the first round of frequency sweeping determined based on the signal strength RSSI has good signal strength, the value of the corresponding fixed combination times can be small, and the fixed combination times can be selected to be 1, 2 or 4, and at this time, the time of the first round of frequency sweeping is also fast, so that the purpose of fast frequency sweeping is achieved.
In addition, the threshold of the related parameters of the synchronization signal can be determined according to the specific conditions of a plurality of frequency points to be scanned currently.
The N1 determined based on the actual situation also determines the frequency point of the first round of frequency sweeping, instead of directly sweeping all the frequency points in the frequency band, and the RSSI of the first round of frequency sweeping is better, the fixed merging times are smaller in value, and the speed of determining the target frequency point is accelerated.
In an exemplary embodiment, the target frequency point screening process includes:
taking a first frequency point of a plurality of frequency points to be scanned as a current frequency point;
the following is performed in a loop:
adjusting the current frequency point to automatic gain control AGC; acquiring related parameters of a narrow-band main synchronizing signal and related parameters of a narrow-band auxiliary synchronizing signal of the current frequency point; and determining whether the current frequency point is a target frequency point or not based on the narrowband main synchronizing signal parameter and the narrowband auxiliary synchronizing signal related parameter of the current frequency point, and taking the next frequency point in the plurality of frequency points to be scanned as the current frequency point when the current frequency point is not the target frequency point.
In this embodiment, the automatic gain control AGC for adjusting the appropriate current frequency point is to set the optimal target power for decoding the signal. Namely, the automatic gain control AGC is adjusted according to the signal strength RSSI of the current frequency point, so that the AGC corresponds to the optimal target power of the signal. For example, when the RSSI is less than the target power, the value of the AGC is increased, and when the RSSI is greater than the target power, the value of the AGC is decreased.
The obtained related parameters of the narrowband primary synchronization signal are related peak-to-average ratios, the related parameters of the narrowband secondary synchronization signal are related peak-to-average ratios, of course, other parameters of the synchronization signal can be selected as related parameters, the obtained related parameters are used for determining whether the current frequency point can be a target frequency point, and if the current frequency point can be the target frequency point, the frequency sweeping is finished. And if the frequency point is not the target frequency point, executing the content by taking the next frequency point in the multiple frequency points to be scanned as the current frequency point, namely, sequentially determining whether the frequency point in the multiple frequency points to be scanned can be taken as the target frequency point before determining the target frequency point.
By adopting the method, the determined target frequency point is more accurate and has high applicability based on the adjusted automatic gain control and the relevant parameters of the synchronous signals.
In an exemplary embodiment, the determining whether the current frequency point is a target frequency point based on the narrowband primary synchronization signal parameter and the narrowband secondary synchronization signal related parameter of the current frequency point includes:
judging whether the related parameter of the narrow-band main synchronizing signal of the current frequency point is larger than the related parameter threshold of the narrow-band main synchronizing signal corresponding to the current round of frequency sweep, and obtaining a first judgment result;
if the first judgment result is negative, determining that the current frequency point is not the target frequency point;
if the first judgment result is yes, continuously judging whether the related parameter of the narrowband auxiliary synchronizing signal of the current frequency point is larger than the related parameter threshold of the narrowband auxiliary synchronizing signal corresponding to the current round of sweep frequency, and obtaining a second judgment result;
if the second judgment result is yes, determining the current frequency point as the target frequency point;
and if the second judgment result is negative, determining that the current frequency point is not the target frequency point.
In the embodiment, firstly, the related parameters of the narrowband primary synchronization signal are judged, and under the condition that the related parameters of the narrowband primary synchronization signal meet the requirements, whether the related parameters of the narrowband secondary synchronization signal meet the requirements or not is further judged, so that the target frequency point is determined.
In the embodiment, whether the relevant parameters of the synchronization signals meet the requirements or not is judged in sequence, if the narrow-band main synchronization signals do not meet the requirements, whether the narrow-band main synchronization signals are the target frequency points or not can be directly determined, the judgment of the narrow-band auxiliary synchronization signals is not needed, and the time for determining the target frequency points is shortened.
In an exemplary embodiment, the second round of frequency sweeping, as shown in fig. 2, includes:
And in the second round of frequency sweeping, acquiring all frequency points of the first sequence as the frequency points of the second round of frequency sweeping, and determining the fixed merging times C2 and the related parameter threshold of the narrow-band synchronous signal according to the specific signal intensity conditions of the frequency points of the second round of frequency sweeping, wherein the fixed merging times C2 and the related parameter threshold of the narrow-band synchronous signal are different from the fixed merging times of the first round and the related parameter threshold of the narrow-band synchronous signal.
And (3) the frequency points of the second round of frequency sweeping are sequentially and averagely grouped, and the grouping number S2 can be determined according to the number of the frequency points to be scanned in the second round or the signal strength RSSI. And sequentially screening the target frequency points of each group, if the target frequency points are determined in the current group, reporting in advance, and not screening the target frequency points of the subsequent groups.
And in the second round of frequency sweeping, all frequency points are subjected to grouping frequency sweeping, so that the speed of determining the target frequency point is increased.
In an exemplary embodiment, the second round frequency sweeping further includes:
and storing the related parameters of the narrow-band main synchronizing signal of each frequency point in each group in the target frequency point screening process.
And the frequency points in the second round of frequency sweeping are all frequency points in the bandwidth to be scanned, and if the target frequency point is not determined, the strength of the frequency point signal can be better represented by storing the related parameter values of the narrow-band signal corresponding to the frequency points, so that the frequency points can be determined later.
In an exemplary embodiment, the third round of frequency sweeping includes:
sequencing all frequency points of the stored narrowband main synchronous signal related parameter values according to the sequence of the narrowband main synchronous signal related parameter values from large to small to obtain a second sequence;
determining the first N3 frequency points in the second sequence, determining that the fixed merging time is C3, and a narrowband primary synchronization signal related parameter threshold ThrNpss3 and a narrowband secondary synchronization signal related parameter threshold ThrNsss3 which correspond to the third round of frequency sweep;
equally dividing the N3 frequency points into S3 groups, and sequentially screening the target frequency points for each group of frequency points;
if the target frequency point is determined in the third round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the third round of frequency sweeping, carrying out a fourth round of frequency sweeping.
In this embodiment, N3 may be 4/5 of the number of the second sequence frequency points, and the fixed combining times C3 and the narrowband synchronization signal related parameter threshold are determined according to the narrowband main synchronization signal related parameter values of the frequency points of the third round of frequency sweep, and are different from the first round, the second round and the narrowband synchronization signal related parameter thresholds.
And the frequency points of the third round of frequency sweeping are sequentially and averagely grouped, and the grouping number S3 can be determined according to the number of the frequency points to be scanned of the third round, and also can be determined according to the stored related parameter values of the narrow-band master synchronization signal. And sequentially screening the target frequency points of each group, if the target frequency points are determined in the current group, reporting in advance, and not screening the target frequency points of the subsequent groups.
And in the third round of frequency sweeping, the frequency points to be scanned are subjected to grouping frequency sweeping, so that the speed of determining the target frequency points is increased.
In an exemplary embodiment, the fourth sweep comprises:
acquiring all N4 frequency points in the second sequence, wherein N4 is the frequency point of all the stored related parameter values of the narrowband master synchronization signal;
determining a fixed combination frequency C4, and a narrowband primary synchronization signal related parameter threshold ThrNpss4 and a narrowband secondary synchronization signal related parameter threshold ThrNsss4 corresponding to the fourth round of frequency sweep;
dividing the N4 frequency points into S4 groups, and sequentially screening the target frequency points for each group of frequency points;
if the target frequency point is determined in the fourth frequency sweep, ending the frequency sweep; and reporting that the frequency sweeping fails if the target frequency point is not determined in the fourth frequency sweeping.
And in the fourth round of frequency sweep, acquiring all frequency points of the second sequence as the frequency points of the fourth round of frequency sweep, and determining the fixed merging times C4 and the related parameter threshold of the narrow-band synchronous signal according to the corresponding related parameter values of the narrow-band main synchronous signal of the frequency points of the fourth round of frequency sweep, wherein the fixed merging times C4 and the related parameter threshold of the narrow-band synchronous signal are different from the fixed merging times and the related parameter threshold of the narrow-band synchronous signal of the first round, the second round and the third round.
And the frequency points of the fourth round of frequency sweep are sequentially and averagely grouped, and the grouping number S4 can be determined according to the number of the frequency points to be scanned of the second round, and also can be determined according to the stored related parameter values of the narrow-band master synchronization signal. And sequentially screening the target frequency points of each group, if the target frequency points are determined in the current group, reporting in advance, and not screening the target frequency points of the subsequent groups.
And in the fourth frequency sweep, all frequency points are subjected to grouping frequency sweep, so that the speed of determining the target frequency point is increased.
By integrating the above embodiments, it can be known that the target frequency point can be determined by performing the above four frequency sweeps at most, and target frequency point screening processing needs not to be performed on all frequency points for each frequency sweep, where the frequency points for the first frequency sweep and the second frequency sweep are determined based on the signal strength RSSI, and the frequency points for the third frequency sweep and the fourth frequency sweep are determined based on the narrowband master synchronization signal stored in the second frequency sweep process, where the signal strength RSSI and the narrowband master synchronization signal correspond to the strength of the frequency point signal, and the frequency point signal strengths of different frequency sweeps are different, and the corresponding fixed merging times are also different. Therefore, the speed of determining the target frequency point is increased.
The present disclosure also provides a fast frequency sweeping apparatus, as shown in fig. 3, the fast frequency sweeping apparatus includes:
an adjustment module 301 configured to adjust the automatic gain control AGC to a fixed value V agc ；
An obtaining module 302, configured to obtain a signal strength RSSI of each frequency point in a bandwidth to be scanned, and sequence the frequency points according to a sequence of the signal strength RSSI from large to small to obtain a first sequence;
a determining module 303 configured to determine frequency points of a first round of frequency sweep based on the first sequence;
the processing module 304 is used for performing target frequency point screening processing on the frequency points of the first round of frequency sweeping; if a target frequency point is determined in the frequency points of the first round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the first round of frequency sweeping, carrying out a second round of frequency sweeping.
In some embodiments, the determining module 303 is further configured to:
determining the first N1 frequency points in the first sequence as the frequency points of the first round of frequency sweeping, wherein N1 is smaller than N2, and N2 is the number of all frequency points contained in the first sequence;
and determining that the fixed combination times is C1, and the threshold of the related parameter of the narrowband primary synchronization signal corresponding to the first round of frequency sweeping is ThrNpss1 and the threshold of the related parameter of the narrowband secondary synchronization signal is ThrNsss 1.
In some embodiments, the processing module 304 is further configured to:
taking a first frequency point of a plurality of frequency points to be scanned as a current frequency point;
the following is performed in a loop:
automatically controlling the gain of the adjustment of the current frequency point to AGC; acquiring related parameters of a narrow-band main synchronizing signal and related parameters of a narrow-band auxiliary synchronizing signal of the current frequency point; and determining whether the current frequency point is a target frequency point or not based on the narrowband main synchronizing signal parameter and the narrowband auxiliary synchronizing signal related parameter of the current frequency point, and taking the next frequency point in the plurality of frequency points to be scanned as the current frequency point when the current frequency point is not the target frequency point.
In some embodiments, the processing module 304 is further configured to:
judging whether the related parameter of the narrow-band main synchronizing signal of the current frequency point is larger than the related parameter threshold of the narrow-band main synchronizing signal corresponding to the current round of frequency sweep, and obtaining a first judgment result;
if the first judgment result is negative, determining that the current frequency point is not the target frequency point;
if the first judgment result is yes, continuously judging whether the related parameter of the narrowband auxiliary synchronizing signal of the current frequency point is larger than the related parameter threshold of the narrowband auxiliary synchronizing signal corresponding to the current round of sweep frequency, and obtaining a second judgment result;
if the second judgment result is yes, determining the current frequency point as the target frequency point;
and if the second judgment result is negative, determining that the current frequency point is not the target frequency point.
In some embodiments, the obtaining module 302 is further configured to obtain all the frequency points in the sequence as the frequency points of the second round of frequency sweeping;
the determining module 303 is further configured to determine that the fixed combining time is C2, and a narrowband primary synchronization signal related parameter threshold ThrNpss2 and a narrowband secondary synchronization signal related parameter threshold ThrNsss2 corresponding to the second round of frequency sweeping;
the processing module 304 is further configured to divide all the frequency points in the sequence into S2 groups in sequence, and perform the target frequency point screening processing on each group of frequency points in sequence; if the target frequency point is determined in the second round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the second round of frequency sweeping, carrying out a third round of frequency sweeping.
In some embodiments, the apparatus further comprises:
a saving module 305 configured to save the parameters related to the narrowband primary synchronization signal of each frequency point in each group in the target frequency point screening process.
In some embodiments, the obtaining module 302 is further configured to obtain a second sequence by sorting the frequency points of the stored narrowband primary synchronization signal related parameter values in an order from large to small;
the determining module 303 is further configured to determine the first N3 frequency points in the second sequence, and determine that the fixed combining time is C3, and a narrowband primary synchronization signal related parameter threshold ThrNpss3 and a narrowband secondary synchronization signal related parameter threshold ThrNsss3 corresponding to the third round of frequency sweep;
the processing module 304 is further configured to divide the N3 frequency points into S3 groups, and sequentially perform the target frequency point screening processing on each group of frequency points; if the target frequency point is determined in the third round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the third round of frequency sweeping, carrying out a fourth round of frequency sweeping.
In some embodiments, the obtaining module 302 is further configured to obtain all N4 frequency points in the second sequence, where N4 is the frequency point of all the stored narrowband primary synchronization signal related parameter values;
the determining module 303 is further configured to determine that the fixed combining time is C4, and a narrowband primary synchronization signal related parameter threshold ThrNpss4 and a narrowband secondary synchronization signal related parameter threshold ThrNsss4 corresponding to the fourth round of frequency sweep;
the processing module 304 is further configured to divide the N4 frequency points into S4 groups, and sequentially perform the target frequency point screening processing on each group of frequency points; if the target frequency point is determined in the fourth frequency sweep, ending the frequency sweep; and if the target frequency point is not determined in the fourth frequency sweep, reporting that the frequency sweep fails.
The present disclosure also provides a fast frequency sweeping device, including:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the fast frequency sweep method described above.
The present disclosure also provides a non-transitory computer readable storage medium having instructions that, when executed by a processor of a communication device, enable the communication device to perform the above-described fast frequency sweep method.
Fig. 4 is a block diagram illustrating a fast frequency sweep apparatus 400 according to an exemplary embodiment.
Referring to fig. 4, the apparatus 400 may include one or more of the following components: processing components 402, memory 404, power components 406, multimedia components 408, audio components 410, input/output (I/O) interfaces 412, sensor components 414, and communication components 416.
The processing component 402 generally controls overall operation of the apparatus 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module to facilitate interaction between the multimedia component 408 and the processing component 402.
The memory 404 is configured to store various types of data to support operations at the apparatus 400. Examples of such data include instructions for any application or method operating on the device 400, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 404 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power supply component 406 provides power to the various components of the device 400. The power components 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 400.
The multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 400 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 410 is configured to output and/or input audio signals. For example, audio component 410 includes a Microphone (MIC) configured to receive external audio signals when apparatus 400 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 404 or transmitted via the communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.
The I/O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 414 includes one or more sensors for providing various aspects of status assessment for the apparatus 400. For example, the sensor component 414 may detect the open/closed state of the apparatus 400, the relative positioning of components, such as a display and keypad of the apparatus 400, the sensor component 414 may also detect a change in the position of the apparatus 400 or a component of the apparatus 400, the presence or absence of user contact with the apparatus 400, orientation or acceleration/deceleration of the apparatus 400, and a change in the temperature of the apparatus 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 416 is configured to facilitate wired or wireless communication between the apparatus 400 and other devices. The apparatus 400 may access a wireless network based on a communication standard, such as WiFi, 4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 404 comprising instructions, executable by the processor 420 of the apparatus 400 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A quick frequency sweeping method is applied to a terminal and is characterized by comprising the following steps:
adjusting automatic gain control AGC to a fixed value V agc ；
Acquiring the signal strength RSSI of each frequency point in a bandwidth to be scanned, and sequencing the frequency points according to the sequence of the signal strength RSSI from large to small to obtain a first sequence;
determining frequency points of a first round of frequency sweeping based on the first sequence; determining the first N1 frequency points in the first sequence as the frequency points of the first round of frequency sweeping, wherein N1 is smaller than N2, and N2 is the number of all the frequency points contained in the first sequence;
carrying out target frequency point screening processing on the frequency points of the first round of frequency sweeping; the target frequency point screening processing comprises the steps of judging related parameters of a narrow-band main synchronizing signal and related parameters of a narrow-band auxiliary synchronizing signal of the frequency point and determining a target frequency point;
if the target frequency point is determined in the frequency points of the first round of frequency sweeping, ending the frequency sweeping; if the target frequency point is not determined in the first round of frequency sweeping, performing a second round of frequency sweeping;
the second round of sweeping comprises:
acquiring all frequency points in the sequence as frequency points of the second round of frequency sweeping;
determining a fixed combination frequency C2, and a narrowband primary synchronization signal related parameter threshold ThrNpss2 and a narrowband secondary synchronization signal related parameter threshold ThrNsss2 corresponding to the second round of frequency sweeping;
all the frequency points in the sequence are sequentially divided into S2 groups, and each group of frequency points is sequentially subjected to the target frequency point screening treatment;
if the target frequency point is determined in the second round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the second round of frequency sweeping, carrying out a third round of frequency sweeping.
2. A fast frequency sweep method as claimed in claim 1, wherein the first round of frequency sweeping further comprises: and determining that the fixed combination times is C1, and the threshold of the related parameter of the narrowband primary synchronization signal corresponding to the first round of frequency sweeping is ThrNpss1 and the threshold of the related parameter of the narrowband secondary synchronization signal is ThrNsss 1.
3. A fast frequency sweeping method as claimed in claim 1, wherein the target frequency point screening process includes:
taking a first frequency point of a plurality of frequency points to be scanned as a current frequency point;
the following is performed in a loop:
adjusting the current frequency point to automatic gain control AGC; acquiring related parameters of a narrow-band main synchronizing signal and related parameters of a narrow-band auxiliary synchronizing signal of the current frequency point; and determining whether the current frequency point is a target frequency point or not based on the narrowband main synchronizing signal parameter and the narrowband auxiliary synchronizing signal related parameter of the current frequency point, and taking the next frequency point in the multiple frequency points to be scanned as the current frequency point when the current frequency point is not the target frequency point.
4. A fast frequency sweeping method as claimed in claim 3, wherein the determining whether the current frequency point is a target frequency point based on the narrowband primary synchronization signal parameter and the narrowband secondary synchronization signal related parameter of the current frequency point comprises:
judging whether the related parameter of the narrow-band main synchronizing signal of the current frequency point is larger than the related parameter threshold of the narrow-band main synchronizing signal corresponding to the current round of frequency sweep, and obtaining a first judgment result;
if the first judgment result is negative, determining that the current frequency point is not the target frequency point;
if the first judgment result is yes, continuously judging whether the related parameter of the narrowband auxiliary synchronizing signal of the current frequency point is larger than the related parameter threshold of the narrowband auxiliary synchronizing signal corresponding to the current round of sweep frequency, and obtaining a second judgment result;
if the second judgment result is yes, determining the current frequency point as the target frequency point;
and if the second judgment result is negative, determining that the current frequency point is not the target frequency point.
5. A fast frequency sweeping method as claimed in claim 1, wherein said second round of frequency sweeping further comprises:
and storing the related parameters of the narrow-band main synchronizing signal of each frequency point in each group in the target frequency point screening process.
6. A fast frequency sweeping method as claimed in claim 1, characterized in that said third round of frequency sweeping comprises:
sequencing all frequency points of the stored related parameter values of the narrow-band main synchronizing signal according to the sequence of the related parameter values of the narrow-band main synchronizing signal from large to small to obtain a second sequence;
determining the first N3 frequency points in the second sequence, determining that the fixed merging time is C3, and a narrowband primary synchronization signal related parameter threshold ThrNpss3 and a narrowband secondary synchronization signal related parameter threshold ThrNsss3 which correspond to the third round of frequency sweep;
equally dividing the N3 frequency points into S3 groups, and sequentially screening the target frequency points for each group of frequency points;
if the target frequency point is determined in the third round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the third round of frequency sweeping, carrying out a fourth round of frequency sweeping.
7. A fast frequency sweeping method as claimed in claim 6, wherein said fourth frequency sweep comprises:
acquiring all N4 frequency points in the second sequence, wherein N4 is the frequency point of all the stored narrowband master synchronization signal related parameter values;
determining a fixed combination frequency as C4, and a narrowband primary synchronization signal related parameter threshold ThrNpss4 and a narrowband secondary synchronization signal related parameter threshold ThrNsss4 corresponding to the fourth round of frequency sweep;
dividing the N4 frequency points into S4 groups, and sequentially screening the target frequency points for each group of frequency points;
if the target frequency point is determined in the fourth frequency sweep, ending the frequency sweep; and if the target frequency point is not determined in the fourth frequency sweep, reporting that the frequency sweep fails.
8. A fast frequency sweeping apparatus, comprising:
an adjustment module configured to adjust the automatic gain control AGC to a fixed value V agc ；
The acquisition module is configured to acquire the signal strength RSSI of each frequency point in the bandwidth to be scanned, and sequence the frequency points according to the sequence of the signal strength RSSI from large to small to obtain a first sequence;
a determination module configured to determine frequency points for a first round of frequency sweeps based on the first sequence; determining the first N1 frequency points in the first sequence as the frequency points of the first round of frequency sweeping, wherein N1 is smaller than N2, and N2 is the number of all frequency points contained in the first sequence;
the processing module is configured to perform target frequency point screening processing on the frequency points of the first round of frequency sweeping; the target frequency point screening processing comprises the steps of judging related parameters of a narrow-band main synchronizing signal and related parameters of a narrow-band auxiliary synchronizing signal of the frequency point and determining a target frequency point; if the target frequency point is determined in the frequency points of the first round of frequency sweeping, ending the frequency sweeping; if the target frequency point is not determined in the first round of frequency sweeping, performing a second round of frequency sweeping;
the second round of sweeping comprises:
acquiring all frequency points in the sequence as frequency points of the second round of frequency sweeping;
determining a fixed combination frequency C2, and a narrowband primary synchronization signal related parameter threshold ThrNpss2 and a narrowband secondary synchronization signal related parameter threshold ThrNsss2 corresponding to the second round of frequency sweeping;
all the frequency points in the sequence are sequentially divided into S2 groups, and each group of frequency points is sequentially subjected to the target frequency point screening treatment;
if the target frequency point is determined in the second round of frequency sweeping, ending the frequency sweeping; and if the target frequency point is not determined in the second round of frequency sweeping, performing a third round of frequency sweeping.
9. A fast frequency sweeping apparatus, comprising:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the fast frequency sweep method of any of claims 1 to 7.
10. A non-transitory computer readable storage medium having instructions stored thereon that, when executed by a processor of a communication device, enable the communication device to perform the fast frequency sweep method of any one of claims 1 to 7.
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| CN117081628A (en) * | 2023-08-31 | 2023-11-17 | 厦门汉印电子技术有限公司 | Frequency point determining method and device, printing equipment and storage medium |
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