CN110149656A - Wireless signal coverage test method and device - Google Patents
Wireless signal coverage test method and device Download PDFInfo
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- CN110149656A CN110149656A CN201910517068.XA CN201910517068A CN110149656A CN 110149656 A CN110149656 A CN 110149656A CN 201910517068 A CN201910517068 A CN 201910517068A CN 110149656 A CN110149656 A CN 110149656A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of wireless signal coverage test method and devices to carry out 32 times of down-sampled processing to it after the raw baseband data for receiving the 20ms 5G NR network that sample rate is 122.88M, generates the first data that sample rate is 3.84M；The index and sync bit that the fast correlation of PSS time domain detects determining PSS are carried out to the first data；The compensated SSB of first time frequency deviation is obtained according to the sync bit of PSS；SSS to be checked is determined from the compensated SSB of first time frequency deviation according to the sync bit of PSS；The coherent detection of SSS frequency domain is carried out to SSS to be checked and determines the SSS index received and cell PCI testing result；The sync bit of SSB is determined according to the SSS of detection；The compensated SSB of second of frequency deviation is obtained according to the time domain initial position of the SSS of detection；The SSS of detection is measured based on second of frequency deviation compensated SSB, obtains measurement result；Finally, cell PCI testing result, the sync bit of SSB and measurement result are reported.The above method and device are suitable for the wireless signal coverage test of 5G network.
Description
Technical field
The present invention relates to fields of communication technology, and more specifically, it relates to a kind of wireless signal coverage test method and dresses
It sets.
Background technique
5G (the 5th Generation mobile communication technology, the 5th third-generation mobile communication
Technology), it is in order to meet the needs of future mobile communications, i.e., by the next generation wireless communication technology of release.Relative to using biography
4G (the 4th Generation mobile of LTE (Long Term Evolution, long term evolution) technology of system
Communication technology, fourth generation mobile communication technology) network, 5G network is using (the New that newly eats dishes without rice or wine
Radio, abbreviation NR) technology, to meet eMBB (enhanced Mobile Broadband, the mobile width of enhancing of 5G net definitions
Band), URLLC (Ultra Reliable&Low Latency Communication, the communication of superelevation reliable ultralow time delay), mMTC
The application such as (massive Machine Type of Communication, magnanimity machine type communication, also referred to as extensive Internet of Things)
The business demand of scene.
At this stage, 5G network has just emerged, and is in construction and maintenance phase, needs to carry out wireless signal coverage test, with
5G network is optimized according to test result, the covering performance for being optimal 5G network.But due to NR technology and tradition
LTE technology it is different, the wireless signal that the wireless signal coverage test method applied to 4G network is not particularly suited for 5G network covers
Lid test.
Therefore, how to propose that a kind of wireless signal coverage test method suitable for 5G network becomes those skilled in the art
Technical problem urgently to be resolved.
Summary of the invention
In view of the above problems, it proposes on the present invention overcomes the above problem or at least be partially solved in order to provide one kind
State the wireless signal coverage test method and device of problem.Concrete scheme is as follows:
A kind of wireless signal coverage test method, which comprises
The raw baseband data for the 5G NR network that length is 20ms is received, the sample rate of the raw baseband data is
122.88M；
32 times of down-sampled processing are carried out to the raw baseband data, generate the first data that sample rate is 3.84M；
The index and sync bit that primary synchronization signal PSS time domain fast correlation detects determining PSS are carried out to first data
It sets；
Offset estimation is carried out according to the sync bit of the PSS, obtains the first frequency offset estimation result, and frequently with described first
Estimated result synchronization signal block SSB corresponding to the sync bit of the PSS partially carries out the compensation of first time frequency deviation, obtains for the first time
The compensated SSB of frequency deviation；
Secondary synchronization signal to be checked is determined from the compensated SSB of first time frequency deviation according to the sync bit of the PSS
SSS；
The coherent detection of SSS frequency domain is carried out to the SSS to be checked, determines the received SSS and cell Physical Cell Identifier PCI of institute
Testing result；
The sync bit of the synchronization signal block SSB is determined according to the secondary synchronization signal SSS of the detection；
Offset estimation is carried out according to the time domain initial position of the SSS of the detection, the second frequency offset estimation result is obtained, is used in combination
Second frequency offset estimation result carries out second of frequency deviation compensation to the synchronization signal block SSB, obtains second of frequency deviation compensation
SSB afterwards；
The SSS of the detection is measured based on second of frequency deviation compensated SSB, obtains measurement result；
The cell PCI testing result, the sync bit of the SSB and the measurement result are reported.
Optionally, described that first data are carried out with the rope that primary synchronization signal PSS time domain fast correlation detects determining PSS
Draw and sync bit, comprising:
Extract from first data at 76800 o'clock as the second data；
Second data are segmented, 600 sections of third data are generated, the length of every section of third data is 256 points；
Three sequence of correlation values of every section of third data and the peak-to-average force ratio PMR of three sequence of correlation values are calculated separately, it is described
600 sections of third data correspond to 1800 sequence of correlation values and 1800 PMR in total；
The index and sync bit of PSS are determined according to 1800 sequence of correlation values and 1800 PMR.
Optionally, calculate in 600 sections of third data corresponding three sequence of correlation values of any one section of third data and
The PMR of three sequence of correlation values, comprising:
Obtain preset three local PSS frequency domains conjugation reference sequences refPssFdConj (m) (n)；
According to formula
Corr (m) (n)=ifft (fft (rcv (n))/sqrt (256) .*refPssFdConj (m) (n)) * sqrt (256)
Related operation based on FFT is carried out to current third data, obtains three correlations of the current third data
Sequence corr (m) (n)；
Each sequence of correlation values is handled as follows respectively, obtains the PMR of three sequence of correlation values；
From preceding 128 points of currently associated value sequence determine maximum power value max (| corr (m) (l) |2)；
Calculate 256 points of currently associated value sequence power mean value mean (| corr (m) (n) |2)；
According to formulaCalculate the PMR of currently associated value sequence；
Wherein, m=0,1,2；N=0,1,2 ..., 255；L=0,1 ..., 125,126,127.
Optionally, the sync bit that PSS is determined according to 1800 sequence of correlation values and 1800 PMR, packet
It includes:
It determines the maximum PMR in 1800 PMR, and determines the m value of the corresponding sequence of correlation values of maximum PMR, which is
For the index pssId of PSS；
It determines in 1800 PMR, m value is that the PMR of the m value of the corresponding sequence of correlation values of the maximum PMR is target
PMR；
The target PMR is compared with preset PSS detection threshold one by one, determines to be more than the PSS detection threshold
K PMR, and determine the corresponding sync bit pssPos (k) of each PMR in the K PMR；
It determines and meets the corresponding sync bit of the maximum PMR of pssPos (k)≤(76800-539+1) in the K PMR
Sync bit of the pssPos0 as PSS；
Wherein, K is the integer more than or equal to 1, k=0,1 ..., K-1.
Optionally, the sync bit according to PSS determination from the compensated SSB of first time frequency deviation is to be checked
Secondary synchronization signal SSS, comprising:
According to the sync bit of the PSS, the time domain of SSS to be checked is obtained from the compensated SSB of first time frequency deviation
Data；
The time domain data of the SSS to be checked is subjected to FFT transform to frequency domain, SSS frequency domain sequence to be checked is obtained, is denoted as
RcvSssFd (l), l=0,1 ..., 125,126.
Optionally, the coherent detection of SSS frequency domain is carried out to the SSS to be checked and determines that the SSS index received and cell PCI are examined
Survey result, comprising:
Obtain preset local SSS frequency domain sequence d (m) (l)；Wherein, m=0,1,2 ..., 1007；L=0,1 ..., 125,
126；
The local is calculated separately according to formula corr (m)=abs (sum (real (rcvSssFd (l)) .*d (m) (l)))
The correlation of SSS frequency domain sequence obtains the correlation of 1008 local SSS frequency domain sequences, wherein the rcvSssFd (l) is
The frequency domain sequence of SSS to be checked；
Maximum related value maxCorr is determined from the correlation of 1008 locals SSS frequency domain sequence；
1008 locals SSS frequency domain sequence is calculated according to formula meanCorr=(sum (corr)-maxCorr)/1007
The power mean value meanCorr of the correlation of column；
The PMR of the local SSS frequency domain sequence is calculated according to formula PMR=maxCorr/meanCorr；
When the PMR of the local SSS frequency domain sequence is more than preset SSS detection threshold, it is determined that cell PCI detection knot
Fruit is that the PMR corresponding m, the m of the correlation of the local SSS frequency domain sequence are the PCI of the cell detected, the m value
Corresponding SSS is the SSS detected.
Optionally, the secondary synchronization signal SSS according to the detection determines the sync bit of the synchronization signal block SSB
It sets, comprising:
Calculate the synchronous position offset of essence；
Smart synchronization process is carried out to the secondary synchronization signal SSS of the detection according to the synchronous position offset of the essence, really
Determine the time domain initial position of the SSS of the detection after essence synchronizes；
The time domain initial position of the SSS of the detection after being synchronized according to essence determines the synchronization of the synchronization signal block SSB
Position.
A kind of wireless signal coverage test device, described device include:
Receiving unit, for receiving the raw baseband data for the 5G NR network that length is 20ms, the raw baseband data
Sample rate be 122.88M；
Down-sampled unit, for carrying out 32 times of down-sampled processing to the raw baseband data, generation sample rate is 3.84M
The first data；
PSS time domain fast correlation detection unit, for carrying out the quick phase of primary synchronization signal PSS time domain to first data
Close the index and sync bit for detecting and determining PSS；
First offset estimation and compensating unit obtain first for carrying out offset estimation according to the sync bit of the PSS
Frequency offset estimation result, and with first frequency offset estimation result synchronization signal block SSB corresponding to the sync bit of the PSS into
The compensation of row first time frequency deviation, obtains the compensated SSB of first time frequency deviation；
SSS determination unit to be checked, for according to the sync bit of the PSS from the compensated SSB of first time frequency deviation
Middle determination secondary synchronization signal SSS to be checked；
SSS frequency domain associated detection cell, for carrying out what SSS frequency domain coherent detection determination received to the SSS to be checked
The index and cell PCI testing result of SSS；
The sync bit determination unit of SSB, for determining the synchronization signal according to the secondary synchronization signal SSS of the detection
The sync bit of block SSB；
Second offset estimation and compensating unit, the time domain initial position progress frequency deviation for the SSS according to the detection are estimated
Meter obtains the second frequency offset estimation result, and is carried out second with second frequency offset estimation result to the synchronization signal block SSB
Frequency deviation compensation, obtains the compensated SSB of second of frequency deviation；
SSS measuring unit, for being measured based on the compensated SSB of second of frequency deviation to the SSS of the detection,
Obtain measurement result；
Reporting unit, for by the sync bit of the cell PCI testing result, the SSB and the measurement result
It is reported.
A kind of storage medium, is stored thereon with program, which realizes wireless communication as described above when being executed by processor
Number coverage test method.
A kind of electronic equipment, the electronic equipment include memory and processor, and the memory is for storing program, institute
Processor is stated for running program, wherein described program executes wireless signal coverage test method as described above when running.
By above-mentioned technical proposal, wireless signal coverage test method and device provided by the invention are receiving sampling
After raw baseband data of the rate for the 20ms 5G NR network of 122.88M, 32 times of down-sampled processing are carried out to it, generate sampling
Rate is the first data of 3.84M；The index and sync bit that the fast correlation of PSS time domain detects determining PSS are carried out to the first data；
The compensated SSB of first time frequency deviation is obtained according to the sync bit of PSS；It is compensated according to the sync bit of PSS from first time frequency deviation
SSS to be checked is determined in SSB afterwards；The coherent detection of SSS frequency domain is carried out to SSS to be checked and determines the SSS index and cell PCI received
Testing result；The sync bit of SSB is determined according to the SSS of detection；It is obtained second according to the time domain initial position of the SSS of detection
The compensated SSB of frequency deviation；The SSS of detection is measured based on second of frequency deviation compensated SSB, obtains measurement result；Most
Afterwards, cell PCI testing result, the sync bit of SSB and measurement result are reported.The above method and device are suitable for 5G
The wireless signal coverage test of network.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram of SSB provided in an embodiment of the present invention；
Fig. 2 is a kind of flow diagram of wireless signal coverage test method provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of wireless signal coverage test device provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Firstly the need of explanation, in order to adapt to the business demand of different application scenarios, 5G NR defines 5 seeds load
Wave spacing is 15kHz, 30kHz, 60kHz, 120kHz and 240kHz respectively, wherein 15kHz and 30kHz be mainly used for 6GHz with
Lower frequency range, 120kHz and 240kHz are mainly used for 6GHz with super band, and 60kHz both can be used for 6GHz or less frequency range, can also be with
For 6GHz with super band.At this stage, 5G NR network is arranged net carries out mainly for 6GHz or less frequency range.
Present inventor has found during realizing the application, mainly logical when to wireless signal coverage test
It crosses frequency-sweeping apparatus and carries out cell searching, in 5G NR network, cell searching passes through SSB (Synchronization Signal
Block, synchronization signal block) Lai Shixian.
Specific implementation provided by the embodiments of the present application in order to facilitate understanding below simply introduces SSB.
As shown in Figure 1, a SSB includes PSS (Primary Synchronization Signal, main synchronous letter
Number), SSS (Secondary Synchronization Signal, secondary synchronization signal), 2 PBCH (Physical
Broadcast Channel, Physical Broadcast Channel) signal.One SSB occupies continuous 20 RB (Resource in frequency domain
Block, resource block), amount to 240 subcarriers, occupies continuous 4 OFDM symbols in time domain.Wherein, the length of PSS is 127
Point, each pair of point are answered a RE (Resource Element, resource particle), and PSS is id information in the group of a carrying cell
M sequence；The length of SSS is also 127 points, is the M sequence of id information in the group id information of a carrying cell and the group of cell,
Wherein, the group id information of cell is(range of group ID is 0 to 335), id information is in the group of cell(ID in organizing
Range is 0 to 2).One or more SSB constitutes SSB burst (that is, SS Burst), and a SSB burst occupies a radio frames
Field, SSB number is L in SSB burst, for 3GHz or less frequency range, L=4, for 3GHz to 6GHz frequency range, L=8.
In 5G NR network, it includes 10 subframes in one radio frames, the length of each subframe is that the length of a radio frames, which is 10ms,
1ms, each radio frames are divided into two fields, and preceding 5ms is field 0, and rear 5ms is field 1.The time domain of one SSB originates OFDM
Character position is codetermined by subcarrier spacing, locating frequency range.For example, for 30kHz subcarrier spacing, 3GHz to 6GHz frequency
Section, first OFDM symbol of each SSB, which indexes, meets { 2,8 }+14*n, n=0,1, and 2,3.
In 5G NR network, frequency-sweeping apparatus then starts to carry out cell after receiving wireless signal coverage test instruction
Search to identify different cell ID, and measures each cell by the PSS and SSS of detection different community,
Obtain SS-RP (Synchronization Signal-Receiving Power, synchronous signal receiver power), SS-SINR
(Synchronization Signal-Signal to Interference plus Noise Ratio, synchronization signal letter are dry
Make an uproar ratio) etc. relevant parameters.
It describes in detail below to specific implementation provided by the embodiments of the present application.
Embodiment one
The wireless signal coverage test method that the embodiment one provides is mainly for subcarrier spacing 30kHZ, in SSB burst
The situation that SSB several L are 8.The embodiment of SSB number, similar with embodiment one in other subcarrier spacings and SSB burst,
Also within the scope of protection of this application.
Firstly, angle of the embodiment one from frequency-sweeping apparatus, provides a kind of wireless signal coverage test method.Specifically
, referring to fig. 2, this method can specifically include:
S21: the raw baseband data for the 5G NR network that length is 20ms, the sample rate of the raw baseband data are received
For 122.88M；
Frequency-sweeping apparatus can start to receive 5G NR network after opening to the wireless signal coverage test of 5G NR network
Raw baseband data.
S22: carrying out 32 times of down-sampled processing to the raw baseband data, generates the first data that sample rate is 3.84M；
Since the baseband data samples rate of the received 5G NR network of frequency-sweeping apparatus is often very high, generally 122.88M/s,
Therefore, 20ms raw baseband data size is 2457600 points.And PSS and SSS are typically distributed across the frequency domain center of SSB, account for
According to 127 subcarriers, therefore, frequency-sweeping apparatus carries out down-sampled processing to raw baseband data, and raw baseband data is down-sampled
For the first data, as an embodiment, in the present invention, frequency-sweeping apparatus carries out 32 times of down-sampled places to raw baseband data
Reason, generates the first data that size is at 76800 points, and 76800 points of the first data include that 128 sons near centre frequency carry
Wave, and the complete signal of PSS and SSS are covered, significantly reduce calculation amount when subsequent detection.
S23: the index and sync bit that the fast correlation of PSS time domain detects determining PSS are carried out to first data；
The step specifically includes:
S231: extract from first data at 76800 points as the second data；
The case where SSB several L are 8 in subcarrier spacing 30kHZ, SSB burst, SSB burst exists only in 10ms radio frames
Preceding field, when due to blind examination default SSB sending cycle be 20ms, at least need to carry out in the data of 20ms small
Therefore area searching in the application, takes 20ms data as the second data, second number in the data that sample rate is 3.84M
According to length be 76800 points.
S232: being segmented second data, generates 600 sections of third data, and the length of every section of third data is 256
A point；
According to step=128, overlap=128 is segmented the second data, segments Nstep=76800/128=
600 sections, every segment data is denoted as rcv (n), n=0,1 ..., 255；It should be noted that guarantee that sliding related data is complete
Property, the 600th segment data further includes 128 points that the second data additionally take later.
S233: three sequence of correlation values of every section of third data and the PMR (Peak of three sequence of correlation values are calculated separately
To Mean Ratio, peak-to-average force ratio), 600 sections of third data correspond to 1800 sequence of correlation values and 1800 PMR in total；
Wherein, corresponding three sequence of correlation values of any one section of third data and three in 600 sections of third data are calculated
The method of the PMR of a sequence of correlation values specifically includes:
S2331: preset three local PSS frequency domains conjugation reference sequences refPssFdConj (m) (n) is obtained, wherein m
It is the index of three local PSS frequency domains conjugation reference sequences, m=0,1,2；N is in single local PSS frequency domain conjugation reference sequences
Index, n=0,1,2 ..., 255；
Specifically, generating 3 kinds of local PSS frequency domain sequences according to id information in the group of cell, it may be assumed that dPSS(m) (l), wherein m
It is the index of three local PSS frequency domain sequences, m=0,1,2, l is the index in the PSS frequency domain sequence of single local, l=0,
1 ..., 125,126,127；To each local PSS frequency domain sequence, one 0 is filled, makes its length to 128 points, passes through later
128 point IFFT transform to time domain, generate 3 local PSS time domain sequences, mend 128 0 to each local PSS time domain sequences, it
Frequency domain is returned by 256 FFT transform afterwards, and takes conjugation, generates three local PSS frequency domain conjugation reference sequences refPssFdConj
(m) (n), wherein m=0,1,2；N=0,1,2 ..., 255；
S2332: according to formula
Corr (m) (n)=ifft (fft (rcv (n))/sqrt (256) .*refPssFdConj (m) (n)) * sqrt (256)
Related operation based on FFT is carried out to this section of third data, obtains the sequence of correlation values corr of this section of third data
(m) (n), m are the indexes of the sequence of correlation values of this section of third data, m=0,1,2；N is the index in each sequence of correlation values, n
=0,1 ..., 255；That is there are three the corresponding sequence of correlation values of this section of third data, includes 256 points in each sequence of correlation values；
S2333: being handled as follows each sequence of correlation values, obtains the PMR of the sequence of correlation values；
From preceding 128 points of the sequence of correlation values determine maximum power value max (| corr (m) (l) |2), l=0,
1,...,127；
Calculate 256 points of the sequence of correlation values power mean value mean (| corr (m) (n) |2), n=0,1 ...,
255；
According to formulaCalculate the PMR of the sequence of correlation values.
It should be noted that after being calculated based on 2331 to 2333 mode whole 600 sections of third data, a symbiosis
At 3*600=1800 sequence of correlation values and 1800 PMR；
S234: the index and sync bit of PSS are determined according to 1800 sequence of correlation values and 1800 PMR.
In embodiments of the present invention, it may be determined that the maximum PMR in 1800 PMR, and determine the corresponding correlation of maximum PMR
The m value of value sequence, the m value are the index pssId of PSS；It determines in 1800 PMR, m value is corresponding for the maximum PMR
The PMR of m value of sequence of correlation values be target PMR, the target PMR total 600；By the target PMR one by one with it is default
PSS detection threshold be compared, determine be more than the PSS detection threshold K PMR, and determine each in the K PMR
The corresponding sync bit pssPos (k) of PMR；It determines and meets pssPos (k)≤(76800-539+1) maximum in the K PMR
Sync bit of the corresponding sync bit pssPos0 of PMR as PSS；Wherein, K is integer more than or equal to 1, k=0,1 ...,
K-1。
Specifically, the K PMR can be carried out descending arrangement successively determines each PMR pairs by descending sequence
Whether the position pssPos (k) answered is less than or equal to (76800-539+1), and determines the head of pssPos (k)≤(76800-539+1)
Sync bit of the corresponding sync bit pssPos0 of a PMR as PSS, can reduce calculation amount in this way.As a kind of implementable
Mode, preset PSS detection threshold generally take the numerical value between 15 to 20.
S24: offset estimation is carried out according to the sync bit of the PSS, obtains the first frequency offset estimation result
FreqOffset1, and with the first frequency offset estimation result freqOffset1 SSB corresponding to the sync bit of the PSS into
The compensation of row first time frequency deviation, obtains the compensated SSB of first time frequency deviation.
In the present embodiment, can using based on CP (Cyclic Prefix, cyclic prefix) frequency deviation estimating method according to
The most strong PSS carries out offset estimation, obtains the first frequency offset estimation result freqOffset1.In the present embodiment, in order to reduce
Calculation amount, while guaranteeing the effect of compensation, only the previous OFDM symbol of SSB corresponding to the PSS starts, corresponding to the PSS
SSB after 6.5 OFDM symbols terminating of 1.5 OFDM symbols carry out frequency deviation compensation.
S25: SSS to be checked is determined from the compensated SSB of first time frequency deviation according to the sync bit of the PSS.
The step specifically includes:
S251: according to the sync bit of the PSS, the time domain number of SSS is obtained from the compensated SSB data of the frequency deviation
According to.
In 3.84M sampled data, the length of an OFDM is that the length of 128, CP is 9, since SSS and PSS is separated by 2
OFDM symbol, therefore, the initial position sssSyncPos of SSS time domain data are the sync bits of the PSS plus (128+9) *
2 namely 274.
S252: the time domain data of the SSS is subjected to FFT transform to frequency domain, SSS frequency domain sequence is obtained, is denoted as
RcvSssFd (l), l are the index in the SSS frequency domain sequence, l=0,1 ..., 126；That is, the frequency domain sequence of a SSS is long
Degree is 127 points.
S26: the coherent detection of SSS frequency domain is carried out to the SSS to be checked and determines the SSS index and cell PCI received
(Physical Cell ID, Physical Cell Identifier) testing result,
The step specifically includes:
S261: preset local SSS frequency domain sequence d (m) (l) is obtained；Wherein, m=0,1,2 ..., 1007；L=0,
1 ..., 125,126,127；
Specifically, producing 1008 kinds of local SSS frequency domain sequences according to id information in the group of the group id information of cell and cell
Column, it may be assumed that dSSS(m) (l), wherein m is the index of local SSS frequency domain sequence, m=0,1,2 ..., 1007；L is single local SSS
Index in frequency domain sequence, l=0,1 ..., 125,126,127；
S262: institute is calculated separately according to formula corr (m)=abs (sum (real (rcvSssFd (l)) .*d (m) (l)))
The correlation for stating local SSS frequency domain sequence obtains the correlation of 1008 local SSS frequency domain sequences, wherein the rcvSssFd
(l) frequency domain sequence for being SSS to be checked；
S263: maximum related value maxCorr is determined from the correlation of 1008 locals SSS frequency domain sequence；
S264: 1008 locals SSS is calculated according to formula meanCorr=(sum (corr)-maxCorr)/1007
The power mean value meanCorr of the correlation of frequency domain sequence；
S265: the PMR of the local SSS frequency domain sequence is calculated according to formula PMR=maxCorr/meanCorr；
S267: when the PMR of the local SSS frequency domain sequence is more than preset SSS detection threshold, it is determined that cell PCI
Testing result is that the PMR corresponding m, the m of the correlation of the local SSS frequency domain sequence are the PCI of the cell detected.
It should be noted that then being said when the PMR of the local SSS frequency domain sequence is less than preset SSS detection threshold
It is bright that cell is not detected.
S27: the sync bit of the SSB is determined according to the secondary synchronization signal SSS of the detection；
The step specifically includes:
S271: the synchronous position offset time_offset of essence is calculated；
The S271 is specifically included:
S2711: obtaining the SSS frequency domain sequence rcvSssFd (l), l=0,1 ... of detection, and 125,126；
S2712: the frequency domain correlation sssCorrInFd (l) of the SSS frequency domain sequence rcvSssFd (l) is calculated, wherein l
=0,1 ..., 126；
Specifically, the SSS frequency domain sequence rcvSssFd (l) of detection and local SSS frequency domain sequence d (m) (l) are conjugated
It is multiplied, the frequency domain correlation sssCorrInFd (l) of the SSS frequency domain sequence rcvSssFd (l) of the detection can be obtained.
S2713: the frequency domain correlation sssCorrInFd (l) of the SSS frequency domain sequence rcvSssFd (l) of the detection is become
Time domain is changed to, time-domain power delay profile PDP is obtained；
Specifically, time-domain power delay profile PDP:pdpInTd=ifft ([sssCorrInFd can be calculated according to the following formula
(fft_sz/2+1:end), 0, sssCorrInFd (1:fft_sz/2)]) * sqrt (fft_sz) PDP=abs (pdpInTd) .^
2, wherein fft_sz=128；
S2714: the first half of the time-domain power delay profile PDP and latter half place-exchange are obtained into new PDP:
PDP=[PDP (fft_sz-fft_sz/2+1:fft_sz), PDP (1:fft_sz/2)]；
S2715: the peak position max_idx of the new PDP is found；
S2716: subtracting (fft_sz/2+1) with the peak position max_idx of the new PDP, is calculated what essence synchronized
Position offset time_offset.
That is: time_offset=max_idx- (fft_sz/2+1)；
S272: it is calculated after the essence synchronizes according to formula sssFineSyncPos=sssSyncPos+time_offset
The time domain initial position sssFineSyncPos of the SSS of the detection, wherein the sssSyncPos is SSS time domain before essence synchronizes
The initial position of data.
S273: the synchronization signal block SSB is calculated according to formula ssbSyncPos=sssFineSyncPos- (274+9)
Sync bit ssbSyncPos.
S28: offset estimation is carried out according to the time domain initial position of the SSS of the detection, obtains the second frequency offset estimation result
FreqOffset2, and second of frequency deviation compensation is carried out to the SSB with the second frequency offset estimation result freqOffset2, it obtains
To the compensated SSB of second of frequency deviation.
Specifically, the time domain initial position of the SSS of the detection after being synchronized according to the essence carries out offset estimation, obtain
To the second frequency offset estimation result freqOffset2.
S29: measuring the SSS of the detection based on the compensated SSB of second of frequency deviation, obtains measurement knot
Fruit；
Specifically, measuring the channel estimation that can first carry out SSS to the SSS of detection to the SSS of detection, H_sss is obtained,
Then SS-RP and SS-SINR are further obtained.
S30: the cell PCI testing result, the sync bit of the SSB and the measurement result are reported.
Wireless signal coverage test method provided in this embodiment receives the original base for the 5G NR network that length is 20ms
Band data, the sample rate of the raw baseband data are 122.88M；32 times of down-sampled places are carried out to the raw baseband data
Reason generates the first data that sample rate is 3.84M；Primary synchronization signal PSS time domain fast correlation inspection is carried out to first data
Survey the index and sync bit for determining PSS；Offset estimation is carried out according to the sync bit of the PSS, obtains the first offset estimation
As a result, and being carried out for the first time with first frequency offset estimation result synchronization signal block SSB corresponding to the sync bit of the PSS
Frequency deviation compensation, obtains the compensated SSB of first time frequency deviation；It is compensated according to the sync bit of the PSS from the first time frequency deviation
Secondary synchronization signal SSS to be checked is determined in SSB afterwards；What SSS frequency domain coherent detection determination received is carried out to the SSS to be checked
SSS index and cell PCI testing result；Determine that the synchronization signal block SSB's is same according to the secondary synchronization signal SSS of the detection
Step is set；Offset estimation is carried out according to the time domain initial position of the SSS of the detection, the second frequency offset estimation result is obtained, is used in combination
Second frequency offset estimation result carries out second of frequency deviation compensation to the synchronization signal block SSB, obtains second of frequency deviation compensation
SSB afterwards；The SSS of the detection is measured based on second of frequency deviation compensated SSB, obtains measurement result；It will
The cell PCI testing result, the sync bit of the SSB and the measurement result are reported.The above method is suitable for
The wireless signal coverage test of 5G network.
Embodiment two
The embodiment two is corresponding with embodiment one, from the angle of frequency-sweeping apparatus, provides a kind of wireless signal covering survey
Trial assembly is set, specifically, the device can specifically include referring to Fig. 3:
Receiving unit 31, for receiving the raw baseband data of 5G NR network, the sample rate of the raw baseband data is
122.88M；
Down-sampled unit 32, for carrying out 32 times of down-sampled processing to the raw baseband data, generating sample rate is
The first data of 3.84M；
PSS time domain fast correlation detection unit 33, it is quick for carrying out primary synchronization signal PSS time domain to first data
Coherent detection determines the sync bit of PSS；
First offset estimation and compensating unit 34 obtain for carrying out offset estimation according to the sync bit of the PSS
One frequency offset estimation result freqOffset1, and the synchronization with the first frequency offset estimation result freqOffset1 to the PSS
The corresponding synchronization signal block SSB in position carries out the compensation of first time frequency deviation, obtains the compensated SSB of first time frequency deviation；
SSS determination unit 35 to be checked, it is compensated from the first time frequency deviation for the sync bit according to the PSS
Secondary synchronization signal SSS to be checked is determined in SSB；
SSS frequency domain associated detection cell 36 is received for carrying out SSS frequency domain coherent detection determination to the SSS to be checked
SSS index and cell PCI testing result；
The sync bit determination unit 37 of SSB determines the synchronous letter for the secondary synchronization signal SSS according to the detection
The sync bit of number block SSB；
Second offset estimation and compensating unit 38, the time domain initial position for the SSS according to the detection carry out frequency deviation
Estimation, obtains the second frequency offset estimation result freqOffset2, and with the second frequency offset estimation result freqOffset2 to institute
It states synchronization signal block SSB and carries out second of frequency deviation compensation, obtain the compensated SSB of second of frequency deviation；
SSS measuring unit 39, for being surveyed based on the compensated SSB of second of frequency deviation to the SSS of the detection
Amount, obtains measurement result；
Reporting unit 40, for tying the sync bit of the cell PCI testing result, the SSB and the measurement
Fruit is reported.
It should be noted that the specific implementation of above-mentioned each unit is described in detail in embodiment of the method, please specifically join
See the related content in embodiment of the method, this embodiment is not repeated.
The wireless signal coverage test device includes processor and memory, and above-mentioned each unit is used as program unit
Storage in memory, executes above procedure unit stored in memory by processor to realize corresponding function.
Include kernel in processor, is gone in memory to transfer corresponding program unit by kernel.Kernel can be set one
Or more, it realizes by adjusting kernel parameter to wireless signal coverage test.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, if read-only memory (ROM) or flash memory (flash RAM), memory include that at least one is deposited
Store up chip.
The embodiment of the present application provides a kind of storage medium, is stored thereon with program, real when which is executed by processor
The existing wireless signal coverage test method.
The embodiment of the present application provides a kind of processor, and the processor is for running program, wherein described program operation
Wireless signal coverage test method described in Shi Zhihang.
The embodiment of the present application provides a kind of electronic equipment, and electronic equipment includes processor, memory and is stored in storage
On device and the program that can run on a processor, processor are realized each in wireless signal coverage test method when executing program
Step.Electronic equipment herein can be server, PC, PAD, mobile phone etc..
Present invention also provides a kind of computer program products, when executing on data processing equipment, are adapted for carrying out just
Beginningization has the program of each step in wireless signal coverage test method.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable Jie
The example of matter.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including element
There is also other identical elements in process, method, commodity or equipment.
It will be understood by those skilled in the art that embodiments herein can provide as method, system or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It is deposited moreover, the application can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The above is only embodiments herein, are not intended to limit this application.To those skilled in the art,
Various changes and changes are possible in this application.It is all within the spirit and principles of the present application made by any modification, equivalent replacement,
Improve etc., it should be included within the scope of the claims of this application.
Claims (10)
1. a kind of wireless signal coverage test method, which is characterized in that the described method includes:
The raw baseband data for the 5G NR network that length is 20ms is received, the sample rate of the raw baseband data is
122.88M；
32 times of down-sampled processing are carried out to the raw baseband data, generate the first data that sample rate is 3.84M；
The index and sync bit that primary synchronization signal PSS time domain fast correlation detects determining PSS are carried out to first data；
Offset estimation is carried out according to the sync bit of the PSS, obtains the first frequency offset estimation result, and estimated with first frequency deviation
It counts result synchronization signal block SSB corresponding to the sync bit of the PSS and carries out the compensation of first time frequency deviation, obtain first time frequency deviation
Compensated SSB；
Secondary synchronization signal SSS to be checked is determined from the compensated SSB of first time frequency deviation according to the sync bit of the PSS；
The coherent detection of SSS frequency domain is carried out to the SSS to be checked and determines the SSS index and cell Physical Cell Identifier PCI received
Testing result；
The sync bit of the SSB is determined according to the secondary synchronization signal SSS of the detection；
Offset estimation is carried out according to the time domain initial position of the SSS of the detection, obtains the second frequency offset estimation result, and described in use
Second frequency offset estimation result carries out second of frequency deviation compensation to the SSB, obtains the compensated SSB of second of frequency deviation；
The SSS of the detection is measured based on second of frequency deviation compensated SSB, obtains measurement result；
The cell PCI testing result, the sync bit of the SSB and the measurement result are reported.
2. the method according to claim 1, wherein described carry out the quick phase of PSS time domain to first data
Close the index and sync bit for detecting and determining PSS, comprising:
Extract from first data at 76800 o'clock as the second data；
Second data are segmented, 600 sections of third data are generated, the length of every section of third data is 256 points；
Calculate separately three sequence of correlation values of every section of third data and the peak-to-average force ratio PMR of three sequence of correlation values, described 600 sections
Third data correspond to 1800 sequence of correlation values and 1800 PMR in total；
The index and sync bit of PSS are determined according to 1800 sequence of correlation values and 1800 PMR.
3. according to the method described in claim 2, it is characterized in that, calculating any one section of third in 600 sections of third data
The PMR of corresponding three sequence of correlation values of data and three sequence of correlation values, comprising:
Obtain preset three local PSS frequency domains conjugation reference sequences refPssFdConj (m) (n)；
According to formula
Corr (m) (n)=ifft (fft (rcv (n))/sqrt (256) .*refPssFdConj (m) (n)) * sqrt (256)
Related operation based on FFT is carried out to current third data, obtains three sequence of correlation values of the current third data
corr(m)(n)；
Each sequence of correlation values is handled as follows respectively, obtains the PMR of three sequence of correlation values；
From preceding 128 points of currently associated value sequence determine maximum power value max (| corr (m) (l) |2)；
Calculate 256 points of currently associated value sequence power mean value mean (| corr (m) (n) |2)；
According to formulaCalculate the PMR of currently associated value sequence；
Wherein, m=0,1,2；N=0,1,2 ..., 255；L=0,1 ..., 125,126,127.
4. according to the method described in claim 2, it is characterized in that, described according to 1800 sequence of correlation values and 1800
A PMR determines the index and sync bit of PSS, comprising:
It determines the maximum PMR in 1800 PMR, and determines the m value of the corresponding sequence of correlation values of maximum PMR, which is
The index pssId of PSS；
It determines in 1800 PMR, the PMR of 600 sequence of correlation values corresponding to the corresponding m value of the maximum PMR is mesh
PMR is marked, the target PMR is 600 total；
The target PMR is compared with preset PSS detection threshold one by one, determines K more than the PSS detection threshold
PMR, and determine the corresponding sync bit pssPos (k) of each PMR in the K PMR；
It determines and meets the corresponding sync bit of the maximum PMR of pssPos (k)≤(76800-539+1) in the K PMR
Sync bit of the pssPos0 as PSS；
Wherein, K is the integer more than or equal to 1, k=0,1 ..., K-1.
5. the method according to claim 1, wherein the sync bit according to the PSS is from described first
Secondary synchronization signal SSS to be checked is determined in the secondary compensated SSB of frequency deviation, comprising:
According to the sync bit of the PSS, the time domain data of SSS to be checked is obtained from the compensated SSB of first time frequency deviation；
The time domain data of the SSS to be checked is subjected to FFT transform to frequency domain, SSS frequency domain sequence to be checked is obtained, is denoted as rcvSssFd
(l), l=0,1 ..., 125,126,127.
6. according to the method described in claim 5, being determined it is characterized in that, carrying out the coherent detection of SSS frequency domain to the SSS to be checked
The SSS index and cell PCI testing result received, comprising:
Obtain preset local SSS frequency domain sequence d (m) (l)；Wherein, m=0,1,2 ..., 1007；L=0,1 ..., 125,126,
127；
The local SSS is calculated separately according to formula corr (m)=abs (sum (real (rcvSssFd (l)) .*d (m) (l)))
The correlation of frequency domain sequence obtains the correlation of 1008 local SSS frequency domain sequences, wherein the rcvSssFd (l) is to be checked
The frequency domain sequence of SSS；
Maximum related value maxCorr is determined from the correlation of 1008 locals SSS frequency domain sequence；
1008 locals SSS frequency domain sequence is calculated according to formula meanCorr=(sum (corr)-maxCorr)/1007
The power mean value meanCorr of correlation；
The PMR of the local SSS frequency domain sequence is calculated according to formula PMR=maxCorr/meanCorr；
When the PMR of the local SSS frequency domain sequence is more than preset SSS detection threshold, it is determined that cell PCI testing result is
The PMR corresponding m, the m of the correlation of the local SSS frequency domain sequence are the PCI of the cell detected.
7. according to the method described in claim 5, it is characterized in that, described determine according to the secondary synchronization signal SSS of the detection
The sync bit of the SSB, comprising:
Calculate the synchronous position offset of essence；
Smart synchronization process is carried out to the time domain initial position of the SSS of the detection according to the synchronous position offset of the essence, really
Determine the time domain initial position of the SSS of the detection after essence synchronizes；
The time domain initial position of the SSS of the detection after being synchronized according to essence determines the sync bit of the SSB.
8. a kind of wireless signal coverage test device, which is characterized in that described device includes:
Receiving unit, for receiving the raw baseband data for the 5G NR network that length is 20ms, the raw baseband data is adopted
Sample rate is 122.88M；
Down-sampled unit generates that sample rate is 3.84M for carrying out 32 times of down-sampled processing to the raw baseband data
One data；
PSS time domain fast correlation detection unit, for carrying out primary synchronization signal PSS time domain fast correlation inspection to first data
Survey the index and sync bit for determining PSS；
First offset estimation and compensating unit obtain the first frequency deviation for carrying out offset estimation according to the sync bit of the PSS
Estimated result, and is carried out with first frequency offset estimation result synchronization signal block SSB corresponding to the sync bit of the PSS
Frequency deviation compensation, obtains the compensated SSB of first time frequency deviation；
SSS determination unit to be checked, it is true from the compensated SSB of first time frequency deviation for the sync bit according to the PSS
Fixed secondary synchronization signal SSS to be checked；
SSS frequency domain associated detection cell determines received SSS index for carrying out the coherent detection of SSS frequency domain to the SSS to be checked
With cell PCI testing result；
The sync bit determination unit of SSB, for determining the sync bit of the SSB according to the SSS of the detection；
Second offset estimation and compensating unit, the time domain initial position for the SSS according to the detection carry out offset estimation, obtain
Second of frequency deviation compensation is carried out to the SSB to the second frequency offset estimation result, and with second frequency offset estimation result, obtains
SSB after secondary frequency offset compensation；
SSS measuring unit is obtained for being measured based on the compensated SSB of second of frequency deviation to the SSS of the detection
Measurement result；
Reporting unit, for carrying out the sync bit of the cell PCI testing result, the SSB and the measurement result
It reports.
9. a kind of storage medium, is stored thereon with program, realized when which is executed by processor as appointed in claim 1 to 7
Wireless signal coverage test method described in one.
10. a kind of electronic equipment, the electronic equipment includes memory and processor, and the memory is for storing program, institute
Processor is stated for running program, wherein execute when described program is run wireless as described in any one of claims 1 to 7
Signal coverage test method.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912645A (en) * | 2019-11-29 | 2020-03-24 | 武汉虹信通信技术有限责任公司 | 5G NR downlink synchronization method and system based on SDR platform |
| CN111988840A (en) * | 2020-08-31 | 2020-11-24 | 西安电子科技大学 | Physical cell identification extraction method based on synchronous signal block joint statistics |
| CN113162878A (en) * | 2021-04-10 | 2021-07-23 | 天津德力仪器设备有限公司 | PSS symbol synchronization method applied to negative signal-to-noise ratio 5GNR system |
| CN113438721A (en) * | 2021-06-30 | 2021-09-24 | 展讯通信（上海）有限公司 | Detection method and device for subcarrier spacing, readable storage medium and terminal |
| CN113473520A (en) * | 2021-06-22 | 2021-10-01 | Oppo广东移动通信有限公司 | Cell search method and device, chip, equipment and storage medium |
| CN114466402A (en) * | 2022-03-10 | 2022-05-10 | Oppo广东移动通信有限公司 | Cell detection method, device, equipment and readable storage medium |
| CN115567357A (en) * | 2022-09-09 | 2023-01-03 | 京信网络系统股份有限公司 | Time-frequency synchronization method, device, equipment, storage medium and program product |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231326A (en) * | 2017-05-19 | 2017-10-03 | 大连理工大学 | A kind of cell searching system in NB IoT system down links |
| CN108123774A (en) * | 2017-12-27 | 2018-06-05 | 中山大学花都产业科技研究院 | A kind of narrowband Internet of Things down link synchronisation method and its system |
| CN108282434A (en) * | 2017-01-06 | 2018-07-13 | 上海创远仪器技术股份有限公司 | A kind of detection method of LTE downlinks primary synchronization signal |
| CN108377174A (en) * | 2018-02-27 | 2018-08-07 | 北京北方烽火科技有限公司 | A kind of detection method and device of the co-frequency cells NB-IOT |
| CN108401478A (en) * | 2018-03-13 | 2018-08-14 | 香港应用科技研究院有限公司 | Cell searching in wireless network |
-
2019
- 2019-06-14 CN CN201910517068.XA patent/CN110149656B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282434A (en) * | 2017-01-06 | 2018-07-13 | 上海创远仪器技术股份有限公司 | A kind of detection method of LTE downlinks primary synchronization signal |
| CN107231326A (en) * | 2017-05-19 | 2017-10-03 | 大连理工大学 | A kind of cell searching system in NB IoT system down links |
| CN108123774A (en) * | 2017-12-27 | 2018-06-05 | 中山大学花都产业科技研究院 | A kind of narrowband Internet of Things down link synchronisation method and its system |
| CN108377174A (en) * | 2018-02-27 | 2018-08-07 | 北京北方烽火科技有限公司 | A kind of detection method and device of the co-frequency cells NB-IOT |
| CN108401478A (en) * | 2018-03-13 | 2018-08-14 | 香港应用科技研究院有限公司 | Cell searching in wireless network |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912645A (en) * | 2019-11-29 | 2020-03-24 | 武汉虹信通信技术有限责任公司 | 5G NR downlink synchronization method and system based on SDR platform |
| CN111988840A (en) * | 2020-08-31 | 2020-11-24 | 西安电子科技大学 | Physical cell identification extraction method based on synchronous signal block joint statistics |
| CN111988840B (en) * | 2020-08-31 | 2021-06-01 | 西安电子科技大学 | Physical cell identification extraction method based on synchronous signal block joint statistics |
| CN113162878A (en) * | 2021-04-10 | 2021-07-23 | 天津德力仪器设备有限公司 | PSS symbol synchronization method applied to negative signal-to-noise ratio 5GNR system |
| CN113473520A (en) * | 2021-06-22 | 2021-10-01 | Oppo广东移动通信有限公司 | Cell search method and device, chip, equipment and storage medium |
| CN113438721A (en) * | 2021-06-30 | 2021-09-24 | 展讯通信（上海）有限公司 | Detection method and device for subcarrier spacing, readable storage medium and terminal |
| CN113438721B (en) * | 2021-06-30 | 2022-07-19 | 展讯通信（上海）有限公司 | Method and device for detecting subcarrier interval, readable storage medium and terminal |
| CN114466402A (en) * | 2022-03-10 | 2022-05-10 | Oppo广东移动通信有限公司 | Cell detection method, device, equipment and readable storage medium |
| CN115567357A (en) * | 2022-09-09 | 2023-01-03 | 京信网络系统股份有限公司 | Time-frequency synchronization method, device, equipment, storage medium and program product |
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|---|---|
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