CN104065608B - The data processing method and communication equipment of a kind of communication equipment - Google Patents
The data processing method and communication equipment of a kind of communication equipment Download PDFInfo
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Abstract
The embodiment of the present application gives the data processing method and communication equipment of a kind of communication equipment, and method therein specifically includes：According to the first sample frequency corresponding to the reference channel bandwidth of setting and the reference channel bandwidth, the second sampling clock corresponding to the actual bandwidth of communication equipment is produced；Wherein, the ratio of the frequency of second sampling clock and first sample frequency is equal or close to the actual bandwidth and the ratio of the reference channel bandwidth；According to the frequency of the actual bandwidth and its corresponding second sampling clock, the data processing of communication data in communication process is carried out using data processing module in communication equipment corresponding to the reference channel bandwidth.The embodiment of the present application can improve the utilization rate and transmission rate of band resource.
Description
Technical field
The application is related to Long Term Evolution (LTE, Long Term Evolution) technical field, logical more particularly to one kind
Believe the data processing method and communication equipment of equipment.
Background technology
LTE system is by third generation partner program (3GPP, The3rd Generation Partnership
Project UMTS (UMTS, Universal the Mobile Telecommunications) organized to set up
System) the Long Term Evolution of technical standard.
LTE system introduces OFDM (OFDM, Orthogonal Frequency Division
Multiplexing) etc. one of critical transmissions technology, OFDM key technology be modulation and demodulation, pass through inverse quick Fu respectively
In leaf transformation (IFFT) realized with Fast Fourier Transform (FFT) (FFT).In actual applications to reduce computational complexity, generally
The length N for seeking FFT is 2n(n is positive integer), the relation between system sampling frequency Fs and FFT length N are：Fs=N*f, its
In, △ f represent the frequency interval (hereinafter referred to as subcarrier spacing) between two adjacent sub-carriers.Existing LTE protocol defines
15KHz subcarrier spacing, so, as N=2048, Fs=30.72MHz.
Existing LTE protocol defines 6 kinds of different protocol channels bandwidth, respectively 1.4MHz, 3MHz, 5MHz,
10MHz, 15MHz and 20MHz, namely in addition to above-mentioned 6 kinds of protocol channels bandwidth, existing LTE system does not support other channels
Bandwidth.
When actual available bandwidth (hereinafter referred to as actual bandwidth) W is not above-mentioned 6 kinds of protocol channels bandwidth in LTE system
One of when, according to LTE protocol, currently existing scheme can only use above-mentioned 6 kinds of protocol channels bandwidth in be less than W one kind.For example,
Actual bandwidth W is 8MHz, then currently existing scheme can only select 5MHz as channel width, it is contemplated that the width of guard band, this
The transmission bandwidth of system is less than 5MHz in the case of kind, and it is far smaller than actual bandwidth W, and this undoubtedly wastes band resource.
The content of the invention
The embodiment of the present application technical problem to be solved is to provide data processing method and the communication of a kind of communication equipment
Equipment, it is possible to increase the utilization rate and transmission rate of band resource.
In order to solve the above problems, this application discloses a kind of data processing method of communication equipment, including：
According to the first sample frequency corresponding to the reference channel bandwidth of setting and the reference channel bandwidth, produce communication and set
Second sampling clock corresponding to standby actual bandwidth；Wherein, the frequency of second sampling clock and first sample frequency
Ratio equal or close to the actual bandwidth and the reference channel bandwidth ratio；
According to the frequency of the actual bandwidth and its corresponding second sampling clock, using the reference channel bandwidth
Data processing module carries out the data processing of communication data in communication process in corresponding communication equipment.
Disclosed herein as well is a kind of communication equipment, including：
Clock-generating device, adopted for corresponding to the reference channel bandwidth according to setting and the reference channel bandwidth first
Sample frequency, produce the second sampling clock corresponding to the actual bandwidth of communication equipment；Wherein, the frequency of second sampling clock with
The ratio of first sample frequency is equal or close to the actual bandwidth and the ratio of the reference channel bandwidth；And
Data processing equipment, for the frequency according to the actual bandwidth and its corresponding second sampling clock, adopt
Data processing module is carried out in communication process at the data of communication data in the communication equipment corresponding to the reference channel bandwidth
Reason.
Compared with prior art, the embodiment of the present application includes advantages below：
The embodiment of the present application first sample frequency according to corresponding to the reference channel bandwidth and the reference channel bandwidth of setting,
The second sampling clock corresponding to the actual bandwidth of communication equipment is produced, wherein, the frequency of second sampling clock and described the
The ratio of one sample frequency is equal or close to the actual bandwidth and the ratio of the reference channel bandwidth；And above-mentioned second is adopted
Sample clock is applied to the data processing of communication data in communication process, it is possible to by information source data processing to meet the actual bandwidth
It is required that result data；
First, the one kind for being less than actual bandwidth W in above-mentioned 6 kinds of protocol channels bandwidth can only be used relative to currently existing scheme
As channel width, the second sampling clock caused by the embodiment of the present application enable communication devices to support include actual bandwidth with
The ability of various bandwidth including protocol channels bandwidth, such as above-mentioned 8M, 10M and various bandwidth, so as to which communication equipment being capable of spirit
It is living to utilize currently available actual bandwidth, the utilization rate of band resource can be greatly improved；Also, provided according to Shannon's theorems
Message transmission rate and transmission bandwidth proportional relation, the embodiment of the present application can also improve transmission rate；
Second, for communication equipment, it can be entered using data processing module corresponding to the reference channel bandwidth
Data processing in row communication process is to realize above-mentioned actual bandwidth, due to data processing mould corresponding to the reference channel bandwidth
Block is the existing module in communication equipment, therefore the embodiment of the present application need not carry out excessive hardware modifications to communication equipment, therefore
With the advantages of exploitation design is simple, the construction cycle is short；
3rd, because CP is used to fill the space between OFDM symbol, therefore CP length should be the integral multiple in sampling period, and
During stating actual bandwidth in realization, the change of sampling clock causes the change in sampling period, therefore small in actual bandwidth
In the case of reference channel bandwidth, the embodiment of the present application can also increase CP length, so as to increase can cover it is small
Area's scope.
Brief description of the drawings
Fig. 1 is the flow chart of the data processing method for the communication equipment that the embodiment of the present application provides；
Fig. 2 is the structural representation of the data processing module of downlink in the LTE base station that the embodiment of the present application provides；
Fig. 3 is the schematic diagram of bandwidth shared by the useful signal of actual bandwidth that the embodiment of the present application provides when being 8M；
Fig. 4 is the structural representation of the data processing module of up-link in the LTE terminal that the embodiment of the present application provides；
Fig. 5 is the flow chart of the data processing method for the base station that the embodiment of the present application provides；
Fig. 6 is the flow chart of the data processing method for the terminal that the embodiment of the present application provides；
Fig. 7 is the structure chart for the communication equipment that the embodiment of the present application provides；
Fig. 8 is the structure chart for the base station that the embodiment of the present application provides；
Fig. 9 is the structure chart for the terminal that the embodiment of the present application provides.
Embodiment
It is below in conjunction with the accompanying drawings and specific real to enable the above-mentioned purpose of the application, feature and advantage more obvious understandable
Mode is applied to be described in further detail the application.
Communications device embodiments
Reference picture 1, give the flow chart of the data processing method of the communication equipment of the embodiment of the present application offer, this method
It can specifically include：
Step 101, the first sample frequency according to corresponding to the reference channel bandwidth and said reference channel width of setting, production
Second sampling clock corresponding to the actual bandwidth of raw communication equipment；Wherein, the frequency of above-mentioned second sampling clock and above-mentioned first
The ratio of sample frequency is equal or close to above-mentioned actual bandwidth and the ratio of said reference channel width；
At present, the subcarrier spacing selection in the OFDM modulated process of LTE system depends on spectrum efficiency and anti-frequency deviation energy
The compromise of power.Under certain channel width, subcarrier spacing is smaller, and system spectral efficiency is higher.But meanwhile too small son load
Wave spacing is excessively sensitive to Doppler frequency shift and phase noise, can influence systematic function.Therefore, discounting for FFT
Complexity, the selection principle of subcarrier spacing, it should be using as small as possible under conditions of enough anti-deviation capabilities are kept
Subcarrier spacing.In the case of high-speed mobile (350km/h), as long as subcarrier spacing is more than 11kHz, Doppler frequency shift is just not
Serious hydraulic performance decline can be caused.
And because 15kHz can make UMTS lands face wireless access (UTRA, Universal Terrestrial Radio
Access) system and the UTRA systems of evolution (E-UTRA, Evolved UTRA) system have identical spreading rate, so that from
Development cost is reduced in a way, therefore existing LTE protocol finally determines to use 15kHz subcarrier in unicast system
Interval, the length of corresponding OFDM symbol is 66.67 μ s (not including CP).That is, 15kHz is the selection of existing LTE protocol
Optimal subcarrier spacing, and those skilled in the art are then to strictly observe LTE protocol regulation, the subcarrier spacing according to 15kHz
Sample frequency is determined with N, for example, as N=2048, sample frequency Fs=30.72MHz.Even in face of said system
When transmission bandwidth is far smaller than the problem of band resource caused by actual bandwidth W wastes, those skilled in the art be also according to
Above-mentioned routine techniques determines sample frequency.
And this patent inventors noted that Shannon's sampling theorem is pointed out, as long as the nyquist frequency of discrete system is high
In the highest frequency or bandwidth of sampled signal, it is possible to avoid aliasing, above-mentioned Shannon's sampling theorem is applied to communicating
Journey, then there may be proportional relation between channel width and sample frequency, generally, sample frequency is higher, then channel width is bigger,
Conversely, sample frequency is lower, then channel width is smaller.
One of core idea of the embodiment of the present application is, is changed using the proportional relation between transmission bandwidth and sample frequency
Become existing protocol channels bandwidth, specifically, according to corresponding to the reference channel bandwidth and said reference channel width of setting
First sample frequency, produce actual bandwidth corresponding to the second sampling clock, wherein, the frequency of above-mentioned second sampling clock with it is above-mentioned
The ratio of first sample frequency is equal or close to above-mentioned actual bandwidth and the ratio of said reference channel width；And by above-mentioned second
Sampling clock is applied to the data processing in communication process, it is possible to by information source data processing is to meet the actual bandwidth requirement
Result data.
The embodiment of the present application goes for the communication equipments such as base station, terminal, to cause the communication equipments such as base station and terminal
The ability of the various bandwidth including actual bandwidth and protocol channels bandwidth can be supported.The embodiment of the present application goes for
The communication process of any communication systems such as LTE, CDMA (CDMA, Code Division Multiple Access), this Shen
Please embodiment mainly illustrated by taking LTE communication process as an example, the communication process of other communication systems is cross-referenced.
In the embodiment of the present application, actual bandwidth can be used for representing available system bandwidth, and the actual bandwidth can specifically wrap
Upstream bandwidth and downlink bandwidth are included, is available for base station and terminal to be used in conjunction with, upstream bandwidth therein can be consistent with downlink bandwidth,
Can also be inconsistent, it can be determined by those skilled in the art according to actual conditions.
The embodiment of the present application goes for any actual bandwidth, is only said below by taking 8M actual bandwidth as an example
Bright, other actual bandwidths are cross-referenced.
For 8M actual bandwidth, any using in 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz base can be used as
Quasi- channel width.In a kind of alternative embodiment of the application, said reference channel width can be closest with actual bandwidth
Protocol channels bandwidth.For example, with the immediate a width of 10M of protocol channels band of 8M.
According to existing LTE protocol, the first sample frequency corresponding to 10M is 30.72MHz, in such cases, above-mentioned reality
The ratio of bandwidth and said reference channel width is 0.8, then, the frequency of above-mentioned second sampling clock can be equal or close to
30.72M×0.8.In actual applications, due to the limitation of hardware, can not necessarily produce complete with above-mentioned 30.72M × 0.8
The sampling clock of identical second, therefore the embodiment of the present application is also applied for the second sampling clock close to 30.72M × 0.8.
The embodiment of the present application can provide following according to said reference channel width and its corresponding first sample frequency, production
The technical scheme of second sampling clock corresponding to raw actual bandwidth：
Technical scheme one,
Technical scheme one can be by configuring the ginseng of register in the first clock module corresponding to said reference channel width
Number, frequency multiplication and/or frequency dividing are carried out to the first sampling clock caused by oscillator in above-mentioned first clock module, to produce above-mentioned the
Two sampling clocks.
In the embodiment of the present application, sampling clock can be understood as the alternating signal with certain frequency, and clock module can
To be interpreted as the circuit of the alternating signal for producing certain frequency, in the specific implementation, clock module can pass through oscillator
To realize its function, vibration implement body therein can include crystal oscillator and clock oscillator etc..
First clock module corresponding to said reference channel width is the existing module in communication equipment, and technical scheme one
Above-mentioned second sampling clock is produced using with first clock module, without carrying out hardware modifications to communication equipment, need to only be passed through
Above-mentioned second sampling clock can be produced by configuring the parameter of register in above-mentioned first clock module.
Also, technical scheme one by configure register in above-mentioned first clock module parameter produce sampling clock when
Clock producing method, existing first clock module in communication equipment is enabled to produce various required sampling clocks, so that
Communication equipment can support the abilities of various bandwidth including actual bandwidth and protocol channels bandwidth, such as above-mentioned 8M,
10M and various bandwidth, thus communication equipment can the currently available actual bandwidth of flexible utilization, can greatly improve frequency band money
The utilization rate in source.
Technical scheme two,
Technical scheme two can by from said reference channel width corresponding to the different second clock of the first clock module
Module, produce above-mentioned second sampling clock.
In actual applications, can redesign above-mentioned second clock module, and by existing communication equipment first when
Clock module replacing is above-mentioned second clock module, or, can also be to the whole communication including above-mentioned second clock module
Equipment is redesigned so that communication equipment can support it is various including actual bandwidth and protocol channels bandwidth
The ability of bandwidth, such as above-mentioned 8M, 10M and various bandwidth, therefore communication equipment being capable of the currently available reality of flexible utilization
Bandwidth, the utilization rate of band resource can be greatly improved.The embodiment of the present application is not added with to the embodiment of technical scheme two
With limitation.
Step 102, the frequency according to above-mentioned actual bandwidth and its corresponding above-mentioned second sampling clock, using said reference
Data processing module carries out the data processing of communication data in communication process in communication equipment corresponding to channel width.
For communication equipment, it is required to carry out corresponding data processing during LTE uplink and downlink communications, and originally
Apply for that embodiment can use data processing module corresponding to said reference channel width to carry out the data processing in communication process
To realize above-mentioned actual bandwidth, because data processing module corresponding to said reference channel width is the existing mould in communication equipment
Block, therefore the embodiment of the present application designs simple, exploitation week without carrying out excessive hardware modifications to communication equipment, therefore with exploitation
The advantages of phase is short；In addition, in the embodiment of the present application in multiplexed communications equipment data with existing processing module mode, enable to lead to
Information source data processing is to meet including actual bandwidth and protocol channels bandwidth by existing data processing module in letter equipment
Various bandwidth requirements result data so that communication equipment can support various bandwidth abilities.
Reference picture 2, show the structure of the data processing module of downlink in the LTE base station that the embodiment of the present application provides
Schematic diagram, it uses OFDMA access way, and corresponding structure can specifically include：Add check code module 201, coding module
202nd, interleaving block 203, scrambling module 204, modulation module 205, sub-carrier mapping module 206, IFFT modules 207 plus circulation
Prefix module 208 and filter module 209；
Wherein, check code module 201, coding module 202, interleaving block 203 is added to be used to carry out bit-level to information source data
Processing, scrambling module 204, modulation module 205, sub-carrier mapping module 206, IFFT modules 207 plus cyclic prefix module 208
It is used to carry out symbol level processing to information source data with filter module 209；
Also, the data that sub-carrier mapping module 206 exports occupy above-mentioned actual bandwidth on frequency domain, and these meet reality
The frequency domain data of bandwidth requirement is transformed to time domain data through IFFT modules 207, and these time domain datas add through cyclic prefix module 208
Upper cyclic prefix adds protection interval, and filtered device module 209 filters out spuious letter of the OFDM symbol outside actual band
Number.
Assuming that reference channel band a width of 10M, actual bandwidth 8M, the frequency CLK of the second sampling clock caused by step 101
For 24.48MHz, then subcarrier spacing used in sub-carrier mapping module 206 is represented by △ f=1/ ((1/CLK) * N),
Assuming that N=2048, then, △ f are then 11.953k, it is clear that the embodiment of the present application breaches descending chain as defined in existing LTE protocol
The 15k on road limitation；
Assuming that resource block (RB, Resource Block) quantity is 50, sub-carrier number 12, then sub-carrier mapping module
The bandwidth that useful signal takes in the data of 206 outputs is about △ f* sub-carrier number * RB numbers=7.1MHz bandwidth, (8-7.1)
Other frequency ranges corresponding to MHz are protection band, and reference picture 3 shows showing for bandwidth shared by useful signal when actual bandwidth is 8M
It is intended to, the wherein 7.1MHz that useful signal takes bandwidth is far longer than the transmission bandwidth for being less than 5MHz in existing scheme, therefore,
The embodiment of the present application can greatly improve the utilization rate of band resource.
In addition, according to current LTE protocol, LTE system up-link, downlink all employ standard cyclic prefix
(Normal CP) and two kinds of cyclic prefix schemes of extended cyclic prefix (Extended CP), wherein, the length of standard cyclic prefix
Spend for 4.69 μm.The length of cyclic prefix determines the ability of anti-multipath of ofdm system and covering power standard cyclic prefix is base
This option, extended cyclic prefix is due to that can endure bigger wireless transmission delay, and the cell range of covering is bigger, available for big
Range cell or multiple cell broadcast；
Because CP is used to fill the space between OFDM symbol, therefore CP length should be the integral multiple in sampling period, and in reality
During existing above-mentioned actual bandwidth, the change of sampling clock causes the change in sampling period, therefore the embodiment of the present application can also
Enough change CP length；For example, being changed into 8M example from 10M for above-mentioned channel width, sampling clock is changed into from 30.72MHz
24.48MHz, it is assumed that 10M corresponds to CP length as 4.69 μm, then CP length corresponding to 8M is 4.69*30.72/24.48=5.89
μm, it is clear that the embodiment of the present application can increase CP length, so as to increase the cell range that can be covered.
Further, since the sampling number included in each subframe is fixed, therefore the change in sampling period can also draw
Play the change of subframe lengths；For example, being changed into 8M example from 10M for above-mentioned channel width, sampling clock becomes from 30.72MHz
For 24.48MHz, it is assumed that it is 1ms as defined in LTE protocol that 10M, which corresponds to subframe lengths, therefore subframe lengths corresponding to 8M are 1*30.72/
24.48=1.25ms.
With reference to table 1, show that the contrast of systematic parameter corresponding to a kind of the embodiment of the present application 10M and 8M channel widths is shown
Example.
Table 1
It should be noted that the scheme of the above-mentioned actual bandwidth that 8M is realized using 10M as reference channel bandwidth is intended only as
Example, in fact, those skilled in the art can according to actual conditions using 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and
It is any in 20MHz to be used as reference channel bandwidth, and 8M actual bandwidth, the application reality are realized on the basis of reference channel bandwidth
Example is applied not to be any limitation as specific reference channel bandwidth.
In addition, the data processing module of downlink is also intended only as the application of the application in LTE base station shown in above-mentioned Fig. 2
Example, those skilled in the art can use various data processing modules, the embodiment of the present application pair according to the actual requirements
The data processing module of downlink is not any limitation as in specific LTE base station.
Reference picture 3, show the structure of the data processing module of up-link in the LTE terminal that the embodiment of the present application provides
Schematic diagram, it uses single-carrier frequency division multiple access (SC-FDMA, Single-carrier Frequency-Division
Multiple Access) access way, corresponding structure can specifically include：Serioparallel exchange module 401, constellation mapping block
402nd, M points DFT block 403, sub-carrier mapping module 404, N point IFFT modules 405, cyclic prefix module 406 and parallel-serial conversion
Module 407；
Wherein, LTE terminal serial data waiting for transmission flows through the symbol stream that serioparallel exchange module 401 is changed into parallel, these
Parallel symbol flows through constellation mapping block 402 using QPSK (QPSK, Quadrature Phase Shift
Keying), the mode such as quadrature amplitude modulation (QAM, Quadrature Amplitude Modulation) is mapped as symbol stream,
These symbols, which are flowed through after M points DFT block 403 expands to frequency domain data, enters sub-carrier mapping module 404, sub-carrier mapping module
The data of 404 outputs occupy above-mentioned actual bandwidth on frequency domain, and these meet the frequency domain data of actual bandwidth requirement through N points IFFT
Module 405 is transformed to time domain data, these time domain datas through cyclic prefix module 406 add cyclic prefix protection interval after, then
It is parallel to serial conversion module 407 to be converted to serially, final serial time domain data are transmitted to base station by wireless channel.
Assuming that reference channel band a width of 20M, actual bandwidth 8M, the frequency CLK of the second sampling clock caused by step 501
For 12.24MHz, then subcarrier spacing used in sub-carrier mapping module 404 is represented by △ f=1/ ((1/CLK) * N),
Assuming that N=2048, then, △ f are then 5.977k, it is clear that it breaches the limitation of 15k as defined in existing LTE protocol；
Assuming that RB numbers are 100, sub-carrier number 12, then useful signal in the data that sub-carrier mapping module 404 exports
The bandwidth of occupancy is about △ f* sub-carrier number * RB numbers=7.1MHz bandwidth, and the bandwidth for the 7.1MHz that the useful signal takes is remote
Much larger than the transmission bandwidth for being less than 5MHz in existing scheme, therefore, the embodiment of the present application can greatly improve the profit of band resource
With rate.
Further, since CP is used to fill the space between OFDM symbol, therefore CP length should be the integral multiple in sampling period, and
During stating actual bandwidth in realization, the change of sampling clock causes the change in sampling period, therefore the embodiment of the present application
CP length can also be changed；For example, being changed into 8M example from 20M for above-mentioned channel width, sampling clock becomes from 30.72MHz
For 12.24MHz, it is assumed that 20M corresponds to CP length as 4.69 μm, then CP length corresponding to 8M is 4.69*30.72/12.24=
11.77 μm, it is clear that the embodiment of the present application can increase CP length, so as to increase the cell range that can be covered.
Further, since the sampling number included in each subframe is fixed, therefore the change in sampling period can also draw
Play the change of subframe lengths；For example, being changed into 8M example from 20M for above-mentioned channel width, sampling clock becomes from 30.72MHz
For 12.24MHz, it is assumed that it is 1ms as defined in LTE protocol that 20M, which corresponds to subframe lengths, therefore subframe lengths corresponding to 8M are 1*30.72/
12.24=2.5ms.
With reference to table 2, show that the contrast of systematic parameter corresponding to a kind of the embodiment of the present application 20M and 8M channel widths is shown
Example.
Table 1
It should be noted that the scheme of the above-mentioned actual bandwidth that 8M is realized using 20M as reference channel bandwidth is intended only as
Example, in fact, those skilled in the art can according to actual conditions using 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and
It is any in 20MHz to be used as reference channel bandwidth, and 8M actual bandwidth, the application reality are realized on the basis of reference channel bandwidth
Example is applied not to be any limitation as specific reference channel bandwidth.
In addition, the data processing module of up-link is also intended only as the application of the application in LTE terminal shown in above-mentioned Fig. 4
Example, those skilled in the art can use various data processing modules, the embodiment of the present application pair according to the actual requirements
The data processing module of up-link is not any limitation as in specific LTE terminal.
Further, since downlink is transmitted across in LTE base station in the receive process of downlink and Fig. 2 in LTE terminal
Journey is corresponding, therefore therefore not to repeat here for the data processing module of downlink in LTE terminal, cross-referenced.Due to LTE bases
The receive process for up-link of standing are corresponding with the transmission process of up-link in LTE terminal in Fig. 4, thus in LTE base station on
Therefore not to repeat here for the data processing module of line link, cross-referenced.
To sum up, the embodiment of the present application first is adopted according to corresponding to the reference channel bandwidth and said reference channel width of setting
Sample frequency, the second sampling clock corresponding to actual bandwidth is produced, wherein, the frequency of above-mentioned second sampling clock is adopted with above-mentioned first
The ratio of sample frequency is equal or close to above-mentioned actual bandwidth and the ratio of said reference channel width；And during by the above-mentioned second sampling
Clock is applied to the data processing in communication process, it is possible to by information source data processing is to meet the number of results of the actual bandwidth requirement
According to；
The embodiment of the present application has the following advantages that：
First, the one kind for being less than actual bandwidth W in above-mentioned 6 kinds of protocol channels bandwidth can only be used relative to currently existing scheme
As channel width, the second sampling clock caused by the embodiment of the present application enable communication devices to support include actual bandwidth with
The ability of various bandwidth including protocol channels bandwidth, such as above-mentioned 8M, 10M and various bandwidth, so as to which communication equipment being capable of spirit
It is living to utilize currently available actual bandwidth, the utilization rate of band resource can be greatly improved；Also, provided according to Shannon's theorems
Message transmission rate and transmission bandwidth proportional relation, the embodiment of the present application can also improve transmission rate；
Second, for communication equipment, it can be entered using data processing module corresponding to said reference channel width
Data processing in row communication process is to realize above-mentioned actual bandwidth, due to data processing mould corresponding to said reference channel width
Block is the existing module in communication equipment, therefore the embodiment of the present application need not carry out excessive hardware modifications to communication equipment, therefore
With the advantages of exploitation design is simple, the construction cycle is short；
3rd, because CP is used to fill the space between OFDM symbol, therefore CP length should be the integral multiple in sampling period, and
During stating actual bandwidth in realization, the change of sampling clock causes the change in sampling period, therefore small in actual bandwidth
In the case of reference channel bandwidth, the embodiment of the present application can also increase CP length, so as to increase can cover it is small
Area's scope.
Base station embodiment
Reference picture 5, the flow chart of the data processing method of the base station of the embodiment of the present application offer is provided, can specifically be wrapped
Include：
Step 501, the first sample frequency according to corresponding to the reference channel bandwidth and said reference channel width of setting, production
Second sampling clock corresponding to the actual bandwidth of raw base station；Wherein, the frequency of above-mentioned second sampling clock and the above-mentioned first sampling
The ratio of frequency is equal or close to above-mentioned actual bandwidth and the ratio of said reference channel width；
Step 502, the frequency according to above-mentioned actual bandwidth and its corresponding above-mentioned second sampling clock, using said reference
Data processing module carries out the data processing of communication data in communication process in base station corresponding to channel width；
Step 503, in cell search process to terminal send base station cell channel width parameter, above-mentioned channel width
Present channel bandwidth is carried in parameter.
In actual applications, base station, can be according to the current actual bandwidth when finding currently available actual bandwidth
Base station cell is established, and is carried in the system messages such as BCCH (BCCH, Broadcast Control Channel)
Above-mentioned channel width parameter, the present embodiment are not any limitation as to specific logic channel corresponding to channel width parameter.In practice,
Master Information Block (MIB, the Master that can be broadcasted in Physical Broadcast Channel (PBCH, Physical Broadcast Channel)
Indication Block) in carry above-mentioned channel width parameter.
Cell search process is that terminal (UE, UserEquipment) and base station cell obtain time and Frequency Synchronization, and is examined
Survey cell ID process, cell search process can be realized by some down channels, can specifically include synchronizing channel (SCH,
Synchronization Channel), broadcast channel (BCH, broadcasting infomation channel) and descending
Reference signal (RS, reference signals)；SCH is divided into Physical Synchronisation Channel (PSCH, Physical again
Synchronisation Channel) and auxiliary synchronization channel (SSCH, Secondary Synchronisation Channel),
BCH is divided into PBCH and Dynamic Broadcast Channel (DBCH, Dynamic Broadcast Channel) again；
A kind of signal of cell search process of the embodiment of the present application is provided herein, specifically may include steps of：
Step S1, UE starts shooting, reception signal (PSS) in the several center frequency points for there may be LTE cells, to receive letter
Number intensity judges whether there may be cell around this frequency, if frequency and operator when UE saves last time shutdown
Information, then first it can be attempted after starting shooting in the cell that last time is resident；If not provided, the frequency band model of LTE system will be allocated to
Enclose and do full band scan, it is found that the stronger frequency of signal goes to attempt；
Step S2, UE detects PSCH (be used to obtain 5ms clocks, and obtain the specific cell ID in cell ID groups)；
Step S3, SSCH (being used to obtain radio frames clock, cell ID groups, BCH antenna configurations) is detected；
Step S4, downlink reference signal (be used to obtain BCH antenna configurations, and whether use displacement pilot tone) is detected
Step S5, BCH (being used for the other information for obtaining the cells such as system bandwidth) is read, so far, UE is realized and base station
Timing Synchronization.
Due to previously obtained downlink reference signal structure, by demodulated reference signal can further accurate time slot with
Frequency Synchronization, while can be that demodulation PBCH does channel estimation.PBCH is sent on subframe #0 slot#1, be exactly against PSS,
By demodulating PBCH, System Frame Number and bandwidth information, and PHICH configuration and antenna configuration, band here can be obtained
Can includes above-mentioned channel width parameter in wide information.
To sum up, the present embodiment sends the channel width parameter of base station cell in cell search process to terminal, can make
Obtain terminal and realize that own channel bandwidth is synchronous with the channel width of base station cell according to above-mentioned channel width parameter, so that
The currently available actual bandwidth of terminal experience.
Terminal embodiment
Reference picture 6, the flow chart of the data processing method of the terminal of the embodiment of the present application offer is provided, can specifically be wrapped
Include：
Step 601, in cell search process receive the base station cell from base station channel width parameter；Above-mentioned channel
Present channel bandwidth is carried in bandwidth parameter；
Step 602, judge whether above-mentioned present channel bandwidth and the channel width that terminal is currently supported are consistent；
Step 603, when the channel width that above-mentioned present channel bandwidth and terminal are currently supported is inconsistent, it is current with terminal
The channel width of support using above-mentioned present channel bandwidth as actual bandwidth, and uses and above-mentioned base as reference channel bandwidth
First clock module corresponding to quasi- channel width, produce above-mentioned second sampling clock；Wherein, above-mentioned first clock module specifically may be used
Including oscillator and register, by configuring the parameter of register in above-mentioned first clock module, to be produced to above-mentioned oscillator
The first sampling clock carry out frequency multiplication and/or frequency dividing, to produce above-mentioned second sampling clock；Wherein, above-mentioned second sampling clock
Frequency and above-mentioned first sample frequency ratio equal or close to above-mentioned actual bandwidth and the ratio of said reference channel width；
Step 604, the frequency according to above-mentioned actual bandwidth and its corresponding above-mentioned second sampling clock, using said reference
Data in terminal processing module corresponding to channel width carries out the data processing in communication process.
The exploitation design phase that the present embodiment both can apply to terminal can also be applied to after the completion of terminal development design
User's service stage, the hardware of terminal can not be changed after the completion of being designed due to terminal development, thus the present embodiment can by with
The parameter of register in the first clock module corresponding to said reference channel width is put, to oscillator in above-mentioned first clock module
Caused first sampling clock carries out frequency multiplication and/or frequency dividing, to produce above-mentioned second sampling clock.In actual applications, terminal
The channel width currently supported can constantly change with the present channel bandwidth carried in above-mentioned channel width parameter.
It is appreciated that when above-mentioned present channel bandwidth is consistent with the channel width that terminal is currently supported, adopted without changing
Sample clock, the channel width and its frequency of corresponding sampling clock that can be currently supported with the above-mentioned terminal of direct basis, in use
State the data processing in data in terminal processing module progress communication process corresponding to reference channel bandwidth.
To sum up, the channel width parameter that the present embodiment is sent in cell search process according to base station realizes own channel band
It is wide synchronous with the channel width of base station cell, so that the currently available actual bandwidth of terminal experience.
It should be noted that for embodiment of the method, in order to be briefly described, therefore it is all expressed as to a series of action group
Close, but those skilled in the art should know, the embodiment of the present application is not limited by described sequence of movement, because according to
According to the embodiment of the present application, some steps can use other orders or carry out simultaneously.Secondly, those skilled in the art also should
Know, embodiment described in this description belongs to preferred embodiment, and involved action not necessarily the application is implemented
Necessary to example.
Reference picture 7, the structure chart of the communication equipment of the embodiment of the present application offer is provided, can specifically be included：Clock produces
Generating apparatus 701 and data processing equipment 702；
Wherein, above-mentioned clock-generating device 701, for the reference channel bandwidth and said reference channel width according to setting
Corresponding first sample frequency, produces the second sampling clock corresponding to the actual bandwidth of communication equipment；Wherein, above-mentioned second sampling
The ratio of the frequency of clock and above-mentioned first sample frequency is equal or close to above-mentioned actual bandwidth and said reference channel width
Ratio；And
Above-mentioned data processing equipment 702, for according to above-mentioned actual bandwidth and its corresponding above-mentioned second sampling clock
Frequency, communication data in communication process is carried out using data processing module in communication equipment corresponding to said reference channel width
Data processing.
In the embodiment of the present application, above-mentioned communication terminal can be base station or terminal.And said reference channel width
Can be and the immediate protocol channels bandwidth of actual bandwidth.
In a kind of embodiment of the application, above-mentioned clock-generating device 702 can specifically include：
First clock generation module, for being deposited by configuring in the first clock module corresponding to said reference channel width
The parameter of device, frequency multiplication and/or frequency dividing are carried out to the first sampling clock caused by oscillator in above-mentioned first clock module, to produce
Above-mentioned second sampling clock；Or
Second clock generation module, for by from said reference channel width corresponding to the first clock module it is different
Two clock modules, produce above-mentioned second sampling clock.
Reference picture 8, the structure chart of the base station of the embodiment of the present application offer is provided, can specifically be included：Clock produces dress
Put 801, data processing equipment 802 and dispensing device 803；
Wherein, above-mentioned clock-generating device 801, for the reference channel bandwidth and said reference channel width according to setting
Corresponding first sample frequency, produces the second sampling clock corresponding to the actual bandwidth of base station；Wherein, above-mentioned second sampling clock
Frequency and above-mentioned first sample frequency ratio equal or close to above-mentioned actual bandwidth and the ratio of said reference channel width；
Above-mentioned data processing equipment 802, for according to above-mentioned actual bandwidth and its corresponding above-mentioned second sampling clock
Frequency, the data of communication data in communication process are carried out using data processing module in base station corresponding to said reference channel width
Processing；And
Above-mentioned dispensing device 803, for the channel width parameter of base station cell to be sent to terminal in cell search process,
Present channel bandwidth is carried in above-mentioned channel width parameter.
The channel width that the dispensing device 803 of the present embodiment sends base station cell in cell search process to terminal is joined
Number, terminal is enabled to realize the same of own channel bandwidth and the channel width of base station cell according to above-mentioned channel width parameter
Step, so that the currently available actual bandwidth of terminal experience.
Reference picture 9, the structure chart of the terminal of the embodiment of the present application offer is provided, can specifically be included：Reception device
901st, judgment means 902, clock-generating device 903 and data processing equipment 904；
Wherein, above-mentioned reception device 901, for receiving the channel of the base station cell from base station in cell search process
Bandwidth parameter；Present channel bandwidth is carried in above-mentioned channel width parameter；
Above-mentioned judgment means 902 are connected with above-mentioned reception device, for judging that above-mentioned present channel bandwidth and terminal are current
Whether the channel width of support is consistent；
Above-mentioned clock-generating device 903, for the channel width currently supported in above-mentioned present channel bandwidth and terminal not
When consistent, using the channel width that terminal is currently supported as reference channel bandwidth, actual band is used as using above-mentioned present channel bandwidth
Width, and by configuring the parameter of register in the first clock module corresponding to said reference channel width, to above-mentioned first clock
The first sampling clock caused by oscillator carries out frequency multiplication and/or frequency dividing in module, to produce above-mentioned second sampling clock；
Above-mentioned data processing equipment 904 is connected with above-mentioned clock-generating device 903, available for according to above-mentioned actual bandwidth and
Frequency of above-mentioned second sampling clock, is entered using data in terminal processing module corresponding to said reference channel width corresponding to it
Data processing in row communication process.
The present embodiment in cell search process according to base station send channel width parameter realize own channel bandwidth with
The synchronization of the channel width of base station cell, so that the currently available actual bandwidth of terminal experience.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present application can be provided as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present application can use complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present application can use one or more wherein include computer can
With in the computer-usable storage medium (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present application is with reference to according to the method for the embodiment of the present application, terminal device (system) and computer program
The flow chart and/or block diagram of product describes.It should be understood that can be by computer program instructions implementation process figure and/or block diagram
In each flow and/or square frame and the flow in flow chart and/or block diagram and/or the combination of square frame.These can be provided
Computer program instructions are set to all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to produce a machine so that is held by the processor of computer or other programmable data processing terminal equipments
Capable instruction is produced for realizing in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames
The device for the function of specifying.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing terminal equipments
In the computer-readable memory to work in a specific way so that the instruction being stored in the computer-readable memory produces bag
The manufacture of command device is included, the command device is realized in one flow of flow chart or multiple flows and/or one side of block diagram
The function of being specified in frame or multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing terminal equipments so that
Series of operation steps is performed on computer or other programmable terminal equipments to produce computer implemented processing, so that
The instruction performed on computer or other programmable terminal equipments is provided for realizing in one flow of flow chart or multiple flows
And/or specified in one square frame of block diagram or multiple square frames function the step of.
Although having been described for the preferred embodiment of the embodiment of the present application, those skilled in the art once know base
This creative concept, then other change and modification can be made to these embodiments.So appended claims are intended to be construed to
Including preferred embodiment and fall into having altered and changing for the embodiment of the present application scope.
Finally, it is to be noted that, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or terminal device including a series of elements are not only wrapped
Those key elements, but also the other element including being not expressly set out are included, or is also included for this process, method, article
Or the key element that terminal device is intrinsic.In the absence of more restrictions, wanted by what sentence "including a ..." limited
Element, it is not excluded that other identical element in the process including the key element, method, article or terminal device also be present.
Detailed Jie has been carried out to the data processing method and communication equipment of a kind of communication equipment provided herein above
Continue, specific case used herein is set forth to the principle and embodiment of the application, and the explanation of above example is only
It is to be used to help understand the present processes and its core concept；Meanwhile for those of ordinary skill in the art, according to this Shen
Thought please, there will be changes in specific embodiments and applications, in summary, this specification content should not manage
Solve as the limitation to the application.
Claims (6)
- A kind of 1. data processing method of communication equipment, it is characterised in that including：According to the first sample frequency corresponding to the reference channel bandwidth of setting and the reference channel bandwidth, communication equipment is produced Second sampling clock corresponding to actual bandwidth；Wherein, the ratio of the frequency of second sampling clock and first sample frequency Value is equal or close to the actual bandwidth and the ratio of the reference channel bandwidth；It is corresponding using the reference channel bandwidth according to the frequency of the actual bandwidth and its corresponding second sampling clock Communication equipment in data processing module carry out communication process in communication data data processing；The communication equipment is terminal, described according to the reference channel bandwidth and its corresponding first sample frequency, is produced Corresponding to actual bandwidth the step of the second sampling clock before, methods described also includes：The channel width parameter of the base station cell from base station is received in cell search process；Taken in the channel width parameter With present channel bandwidth；Judge whether the present channel bandwidth and the channel width that terminal is currently supported are consistent；Then first sample frequency according to corresponding to the reference channel bandwidth of setting and the reference channel bandwidth, produce communication Corresponding to the actual bandwidth of equipment the step of the second sampling clock, including：Currently supported with terminal in the present channel bandwidth Channel width it is inconsistent when, using the channel width that terminal is currently supported as reference channel bandwidth, with the present channel band Width is used as actual bandwidth, and by configuring the parameter of register in the first clock module corresponding to the reference channel bandwidth, it is right The first sampling clock caused by oscillator carries out frequency multiplication and/or frequency dividing in first clock module, is adopted with producing described second Sample clock.
- 2. according to the method for claim 1, it is characterised in that described according to the reference channel bandwidth and its corresponding the One sample frequency, corresponding to generation actual bandwidth the step of the second sampling clock, including：By configuring the parameter of register in the first clock module corresponding to the reference channel bandwidth, to the first clock mould The first sampling clock caused by oscillator carries out frequency multiplication and/or frequency dividing in block, to produce second sampling clock；OrBy from the reference channel bandwidth corresponding to the different second clock module of the first clock module, produce described second and adopt Sample clock.
- 3. method according to claim 1 or 2, the reference channel band of the setting is a width of closest with the actual bandwidth Protocol channels bandwidth.
- A kind of 4. communication equipment, it is characterised in that including：Clock-generating device, for the first sampling frequency corresponding to the reference channel bandwidth according to setting and the reference channel bandwidth Rate, produce the second sampling clock corresponding to the actual bandwidth of communication equipment；Wherein, the frequency of second sampling clock with it is described The ratio of first sample frequency is equal or close to the actual bandwidth and the ratio of the reference channel bandwidth；AndData processing equipment, for the frequency according to the actual bandwidth and its corresponding second sampling clock, using institute State the data processing that data processing module in communication equipment corresponding to reference channel bandwidth carries out communication data in communication process；The communication equipment is terminal, and the communication equipment also includes：Reception device, for receiving the channel width parameter of the base station cell from base station in cell search process；The letter Present channel bandwidth is carried in road bandwidth parameter；Judgment means, for judging whether the channel width that the present channel bandwidth and terminal are currently supported is consistent；The then clock-generating device, differ specifically for the channel width currently supported with terminal in the present channel bandwidth During cause, using the channel width that terminal is currently supported as reference channel bandwidth, using the present channel bandwidth as actual bandwidth, And by configuring the parameter of register in the first clock module corresponding to the reference channel bandwidth, to first clock module First sampling clock caused by middle oscillator carries out frequency multiplication and/or frequency dividing, to produce second sampling clock.
- 5. communication equipment according to claim 4, it is characterised in that the clock-generating device includes：First clock generation module, for by configuring register in the first clock module corresponding to the reference channel bandwidth Parameter, frequency multiplication and/or frequency dividing are carried out to the first sampling clock caused by oscillator in first clock module, with described in generation Second sampling clock；OrSecond clock generation module, for by from the reference channel bandwidth corresponding to the first clock module it is different second when Clock module, produce second sampling clock.
- 6. the communication equipment according to claim 4 or 5, it is characterised in that the reference channel band is a width of and actual bandwidth Immediate protocol channels bandwidth.
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| US20220052899A1 (en) * | 2018-12-20 | 2022-02-17 | Beijing Xiaomi Mobile Software Co., Ltd. | Data transmission method and apparatus |
| CN114167113B (en) * | 2021-12-31 | 2024-05-17 | 上海市计量测试技术研究院 | Sampling method and system for accurately determining bandwidth of integral digital multimeter |
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