CN102869093B - Frequency range notification method and device - Google Patents
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Abstract
This application provides a kind of frequency range notification method and device, wherein, frequency range notification method comprises: obtain up absolute channel number calculating parameter and/or descending absolute channel number calculating parameter, wherein, up absolute channel number calculating parameter comprises ascending physical signal frequency reference, up center physics frequency, up absolute channel number reference value and the first frequency conversion coefficient, and descending absolute channel number calculating parameter comprises downlink physical frequency reference, downlink center physics frequency, descending absolute channel number reference value and the second frequency conversion coefficient; According to up absolute channel number calculating parameter and/or descending absolute channel number calculating parameter, obtain corresponding up absolute channel number and/or descending absolute channel number; Air-interface information is used to carry the information of up absolute channel number or the information of descending absolute channel number, to notify the communications band of current use.By the application, achieve flexible use and the dynamic conditioning of frequency range, effectively meet frequency usage demand.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a frequency band notification method and apparatus for an LTE system.
Background
In the LTE mobile communication system, the terminal and the eNodeB network element use Frequency resources, which need to refer to the Frequency Band (E-UTRA Operating Band), the physical Frequency (Carrier Frequency) and the Absolute channel Number (E-UTRA Absolute Radio Frequency channel Number, EARFCN for short) specified in the 3GPP36.101 protocol, and a interconversion formula between the physical Frequency and the Absolute channel Number. For eNodeB, the handover function needs to be used in scenarios of organizing cell system information, organizing RRC reconfiguration measurement configuration information, and switching to select a target cell; for the terminal, this conversion function needs to be used in the scenarios of cell search, initial attachment resolution measurement configuration information, and the like.
Taking eNodeB as an example, the software code of eNodeB refers to the formula and table in section 5.7.3 of the 36.101 protocol, and can calculate the central physical frequency point F corresponding to EARFCN.
The calculation formulas of EARFCN to F in the protocol are as follows:
downlink frequency point conversion formula: fDL=FDL_low+0.1(NDL-NOffs-DL)
The conversion formula of the uplink frequency point is as follows: fUL=FUL_low+0.1(NUL-NOffs-UL)
In addition, in the initial data configuration file of the eNodeB, the standard BAND specified by the 36.101 protocol and the corresponding physical center frequency point F may be set. Then, from these two parameters and the formula above, the inverse calculation formula can be derived as:
downlink absolute channel number conversion formula: n is a radical ofDL=NOffs-DL+10×(FDLFDL_low)
Conversion formula of uplink absolute channel number: n is a radical ofUL=NOffs-UL+10×(FULFUL_low)
In the above formula, FDLIndicating a downlink central physical frequency point, FULRepresenting an uplink central physical frequency point, FDL_lowRepresents the lowest value, F, of the downlink physical frequency range corresponding to the frequency bandUL_lowRepresents the lowest value, N, of the physical uplink frequency range corresponding to the frequency bandDLIndicating the absolute channel number, N, of the downlinkULIndicating the absolute channel number, N, of the uplinkOffs-DLIndicates the lowest value, N, of the range of absolute channel numbers for the downlink corresponding to that frequency bandOffs-ULIndicating the lowest value of the range of absolute channel numbers of the uplink corresponding to the frequency band.
For the terminal, similar to the eNodeB, the above tables and formulas in the 36.101 protocol are referred to for the calculation of frequency usage and frequency point conversion.
However, the existing technology only supporting the frequency band and the frequency value specified in the 36.101 protocol cannot fully satisfy the requirement of the system manufacturer and the terminal manufacturer for frequency use. In many application scenarios, device developers often use their own defined frequency bands (i.e., non-standard frequency bands), physical frequencies and absolute channel numbers, and a physical frequency-to-absolute channel number interconversion formula (i.e., non-standard conversion formula) different from the protocol. By using the nonstandard frequency band and the nonstandard conversion formula, on one hand, for an eNodeB manufacturer, once a terminal device is replaced, the software of the eNodeB manufacturer may need to be modified again for a new nonstandard frequency band, and for the terminal manufacturer, the same problem may exist as long as the used eNodeB device is replaced; on the other hand, mismatching and use confusion phenomena are easy to occur among different manufacturers, so that the terminal cannot access the network or cannot communicate.
Therefore, the existing implementation scheme is obviously inconvenient to use flexibly and dynamically adjust the frequency band, lacks standardization and cannot meet the frequency use requirement.
Disclosure of Invention
The application provides a frequency band notification method and a frequency band notification device, which are used for solving the problems that the prior art is inconvenient to flexibly use and dynamically adjust the frequency band, lacks standardization and cannot meet the frequency use requirement.
In order to solve the above problem, the present application discloses a frequency band notification method, including: acquiring an uplink absolute channel number calculation parameter and/or a downlink absolute channel number calculation parameter, wherein the uplink absolute channel number calculation parameter comprises an uplink physical frequency reference value, an uplink central physical frequency point, an uplink absolute channel number reference value and a first frequency point conversion coefficient, and the downlink absolute channel number calculation parameter comprises a downlink physical frequency reference value, a downlink central physical frequency point, a downlink absolute channel number reference value and a second frequency point conversion coefficient; acquiring corresponding uplink absolute channel number and/or downlink absolute channel number according to the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter; and using an air interface message to carry the information of the uplink absolute channel number or the information of the downlink absolute channel number so as to inform the currently used communication frequency band.
Preferably, the step of obtaining the corresponding uplink absolute channel number according to the uplink absolute channel number calculation parameter includes: calculating parameters according to the uplink absolute channel number, and according to an uplink absolute channel number conversion formula: n is a radical ofUL=NUL-ref+（FUL–FUL-ref）/a1Acquiring the corresponding uplink absolute channel number, wherein NULIndicating the absolute channel number, N, of the uplinkUL-refIndicating an absolute channel number reference value, F, of the uplinkULRepresenting an uplink central physical frequency point, FUL-refRepresents an uplink physical frequency reference value, a1Representing a first frequency point conversion coefficient; the step of obtaining the corresponding downlink absolute channel number according to the downlink absolute channel number calculation parameter includes: calculating parameters according to the downlink absolute channel number, and according to a downlink absolute channel number conversion formula: n is a radical ofDL=NDL-ref+（FDL–FDL-ref）/a2Obtaining corresponding downlink absoluteNumber of channels, wherein NDLIndicating the absolute channel number, N, of the downlinkDL-refIndicating a reference value, F, of the absolute channel number in the downlinkDLIndicating a downlink central physical frequency point, FDL-refDenotes a reference value of a downlink physical frequency, a2Representing the second bin conversion coefficients.
Preferably, the frequency band notification method further includes: acquiring the uplink central physical frequency point according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value and the first frequency point conversion coefficient; and/or acquiring the downlink central physical frequency point according to the reference value of the downlink absolute channel number, the reference value of the downlink physical frequency and the second frequency point conversion coefficient.
Preferably, the step of obtaining the uplink central physical frequency point according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value, and the first frequency point conversion coefficient includes: according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value and the first frequency point conversion coefficient, according to an uplink frequency point conversion formula: fUL=FUL-ref+a1（NUL–NUL-ref) Acquiring the physical frequency point of the uplink center; the step of obtaining the downlink central physical frequency point according to the reference value of the downlink absolute channel number, the reference value of the downlink physical frequency and the second frequency point conversion coefficient comprises: according to the reference value of the downlink absolute channel number, the reference value of the downlink physical frequency and the second frequency point conversion coefficient, according to a downlink frequency point conversion formula: fDL=FDL-ref+a2（NDL-NDL-ref) And acquiring the physical frequency point of the downlink center.
Preferably, the step of obtaining the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter includes: receiving the input uplink absolute channel number calculation parameters and/or downlink absolute channel number calculation parameters through a parameter input interface; or, obtaining the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter from an initial data configuration file of a base station or a terminal.
In order to solve the above problem, the present application further discloses a frequency band notification apparatus, including: a first obtaining module, configured to obtain an uplink absolute channel number calculation parameter and/or a downlink absolute channel number calculation parameter, where the uplink absolute channel number calculation parameter includes an uplink physical frequency reference value, an uplink central physical frequency point, an uplink absolute channel number reference value, and a first frequency point conversion coefficient, and the downlink absolute channel number calculation parameter includes a downlink physical frequency reference value, a downlink central physical frequency point, a downlink absolute channel number reference value, and a second frequency point conversion coefficient; a second obtaining module, configured to obtain a corresponding uplink absolute channel number and/or downlink absolute channel number according to the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter; and the notification module is used for using an air interface message to carry the information of the uplink absolute channel number or the information of the downlink absolute channel number so as to notify the currently used communication frequency band.
Preferably, the second obtaining module is configured to calculate a parameter according to the uplink absolute channel number, and according to an uplink absolute channel number conversion formula: n is a radical ofUL=NUL-ref+（FUL–FUL-ref）/a1Acquiring the corresponding uplink absolute channel number, wherein NULIndicating the absolute channel number, N, of the uplinkUL-refIndicating an absolute channel number reference value, F, of the uplinkULRepresenting an uplink central physical frequency point, FUL-refRepresents an uplink physical frequency reference value, a1Representing a first frequency point conversion coefficient; and/or, configured to calculate a parameter according to the downlink absolute channel number, and according to a downlink absolute channel number conversion formula: n is a radical ofDL=NDL-ref+（FDL–FDL-ref）/a2Acquiring the corresponding downlink absolute channel number, wherein NDLIndicating absolute downlinkNumber of channels, NDL-refIndicating a reference value, F, of the absolute channel number in the downlinkDLIndicating a downlink central physical frequency point, FDL-refDenotes a reference value of a downlink physical frequency, a2Representing the second bin conversion coefficients.
Preferably, the frequency band notification apparatus further includes: a third obtaining module, configured to obtain the uplink central physical frequency point according to the uplink absolute channel number reference value, the absolute channel number, the uplink physical frequency reference value, and the first frequency point conversion coefficient; and/or acquiring the downlink central physical frequency point according to the reference value of the downlink absolute channel number, the reference value of the downlink physical frequency and the second frequency point conversion coefficient.
Preferably, the third obtaining module is configured to, according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value, and the first frequency point conversion coefficient, according to an uplink frequency point conversion formula: fUL=FUL-ref+a1（NUL-NUL-ref) Acquiring the physical frequency point of the uplink center; and/or, configured to, according to the downlink absolute channel number reference value, the downlink absolute channel number, the downlink physical frequency reference value, and the second frequency point conversion coefficient, according to a downlink frequency point conversion formula: fDL=FDL-ref+a2（NDL–NDL-ref) And acquiring the physical frequency point of the downlink center.
Preferably, the first obtaining module is configured to receive the input uplink absolute channel number calculation parameter and/or the input downlink absolute channel number calculation parameter through a parameter input interface; or, obtaining the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter from an initial data configuration file of a base station or a terminal.
Compared with the prior art, the method has the following advantages:
the method and the device calculate the corresponding uplink absolute channel number and/or downlink absolute channel number through the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter, and further perform frequency band notification through an air interface message, such as notifying the corresponding communication frequency band currently used by a base station or a terminal. The uplink absolute channel number calculation parameters comprise an uplink absolute channel number reference value, an uplink central physical frequency point, an uplink physical frequency reference value and a first frequency point conversion coefficient; the downlink absolute channel number calculation parameters comprise a downlink absolute channel number reference value, a downlink central physical frequency point, a downlink physical frequency reference value and a second frequency point conversion coefficient. In actual use, the first and second frequency point conversion coefficients can be set according to actual frequency bands, and other uplink and downlink absolute channel number calculation parameters are determined, so that uplink and downlink absolute channel numbers are determined. By the scheme, the standard frequency band specified by the protocol and the non-standard frequency band outside the protocol can be simultaneously supported, and the calculation of the absolute channel number can be conveniently and quickly completed; the absolute channel number conversion formula is unified between a standard and a non-standard, and all parameters of the conversion formula are supported to be matched; supporting frequency point conversion coefficients outside the protocol specification so as to meet the requirements of different manufacturers on frequency point conversion; the unification of the implementation scheme is achieved for both eNodeB and the terminal, and a set of software can be used for dealing with special applications of different manufacturers, so that the flexible use and the dynamic adjustment of frequency bands are realized, and the frequency use requirement is effectively met.
Drawings
Fig. 1 is a flowchart illustrating steps of a frequency band notification method according to a first embodiment of the present application;
fig. 2 is a flowchart illustrating steps of a frequency band notification method according to a second embodiment of the present application;
fig. 3 is a block diagram of a frequency band notification apparatus according to a third embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
Example one
Referring to fig. 1, a flowchart illustrating steps of a frequency band notification method according to a first embodiment of the present application is shown.
The frequency band notification method of the embodiment includes the following steps:
step S102: and acquiring an uplink absolute channel number calculation parameter and/or a downlink absolute channel number calculation parameter.
The uplink absolute channel number calculation parameters comprise an uplink absolute channel number reference value, an uplink central physical frequency point, an uplink physical frequency reference value and a first frequency point conversion coefficient; the downlink frequency point calculation parameters comprise a downlink absolute channel number reference value, a downlink central physical frequency point, a downlink physical frequency reference value and a second frequency point conversion coefficient.
It should be noted that, when the absolute channel numbers of the uplink and the downlink in the same frequency band are calculated, and the physical frequency ranges of the uplink and the downlink corresponding to the frequency band are completely the same, the first frequency point conversion coefficient and the second frequency point conversion coefficient take the same value.
Step S104: and acquiring the corresponding uplink absolute channel number and/or downlink absolute channel number according to the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter.
Step S106: and using the air interface message to carry the information of the uplink absolute channel number or the information of the downlink absolute channel number so as to inform the currently used communication frequency band.
For example, the base station or the terminal notifies the communication frequency band currently used by the corresponding base station or the terminal through the air interface message, and then the base station or the terminal acquires the communication frequency band currently used by the network through the air interface message, and further performs subsequent operations, for example, the eNodeB organizes cell system information, organizes RRC reconfiguration measurement configuration information, switches and selects a target cell, and the like according to the information of the communication frequency band; and the terminal performs cell search, initial attachment analysis measurement configuration information and the like according to the information of the communication frequency band.
In the present application, the air interface message may be of any type, such as a cell system message, an RRC reconfiguration message, a handover request message, and the like.
According to the embodiment, the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter are/is used for calculating the corresponding uplink absolute channel number and/or downlink absolute channel number, and then the frequency band notification is performed through an air interface message, for example, the communication frequency band currently used by the corresponding base station or terminal is notified. The uplink absolute channel number calculation parameters comprise an uplink absolute channel number reference value, an uplink central physical frequency point, an uplink physical frequency reference value and a first frequency point conversion coefficient; the downlink absolute channel number calculation parameters comprise a downlink absolute channel number reference value, a downlink central physical frequency point, a downlink physical frequency reference value and a second frequency point conversion coefficient. In actual use, the first and second frequency point conversion coefficients can be set according to actual frequency bands, and other uplink and downlink absolute channel number calculation parameters are determined, so that uplink and downlink absolute channel numbers are determined. By the scheme of the embodiment, the standard frequency band specified by the protocol and the non-standard frequency band outside the protocol can be simultaneously supported, and the calculation of the absolute channel number can be conveniently and quickly completed; the absolute channel number conversion formula is unified between a standard and a non-standard, and all parameters of the conversion formula are supported to be matched; supporting frequency point conversion coefficients outside the protocol specification so as to meet the requirements of different manufacturers on frequency point conversion; the unification of the implementation scheme is achieved for both eNodeB and the terminal, and a set of software can be used for dealing with special applications of different manufacturers, so that the flexible use and the dynamic adjustment of frequency bands are realized, and the frequency use requirement is effectively met.
Example two
Referring to fig. 2, a flowchart illustrating steps of a frequency band notification method according to a second embodiment of the present application is shown.
In this embodiment, the frequency band notification method of the present application is described by taking an example of obtaining the uplink and downlink absolute channel numbers of the same non-standard frequency band and using an air interface message to carry information of the uplink and downlink absolute channel numbers of the non-standard frequency band to perform frequency band notification.
Step S202: and acquiring an uplink absolute channel number calculation parameter and a downlink absolute channel number calculation parameter.
The uplink absolute channel number calculation parameter and the downlink absolute channel number calculation parameter can be obtained by the following method:
(1) and receiving the input uplink absolute channel number calculation parameters and downlink absolute channel number calculation parameters through a parameter input interface.
The corresponding equipment is provided with a parameter input interface for a user to input the uplink absolute channel number calculation parameters and the downlink absolute channel number calculation parameters, and the user inputs the parameters through the parameter input interface for the uplink and downlink absolute channel number calculation.
(2) And acquiring an uplink absolute channel number calculation parameter and a downlink absolute channel number calculation parameter from an initial data configuration file of the base station or the terminal.
One way is that the uplink absolute channel number calculation parameter and the downlink absolute channel number calculation parameter are used for replacing the original uplink and downlink absolute channel number calculation parameters in the initial data configuration file of the base station or the terminal; in another mode, corresponding uplink absolute channel number calculation parameters and downlink absolute channel number calculation parameters are added in an initial data configuration file of the existing base station or terminal. And then, when calculating, obtaining corresponding parameters from the initial data configuration file of the base station or the terminal.
The latter mode is adopted in this embodiment. Taking the eNodeB as an example, in an initial data configuration file of the eNodeB, in addition to the existing standard BAND and the central physical frequency point F, the first and second frequency point conversion coefficients, the physical frequency reference value, and the absolute channel number reference value mentioned in the above formula are added, so that a unified frequency point conversion formula is equivalently introduced. Therefore, the eNodeB has no difference in the standard and non-standard frequency bands, and can be implemented by only one software code. The parameters used for calculation may be standard values defined in the 36.101 protocol, or may be non-standard values defined by the terminal manufacturer. When terminals of different manufacturers are used, the configuration files can be modified according to different requirements to deal with various special application scenes, and the existing protocol standards and implementation schemes can be compatible, so that the unification, the normalization and the dynamic configurability are realized.
Similarly, for the terminal implementation scheme, similar strategies can be adopted, all configurable parameters are put into an initial data configuration file of the terminal, and a uniform frequency point conversion formula is implemented in a software code, so that the application requirements of different eNodeBs can be completely met.
Of course, in practical applications, a person skilled in the art may also set an obtaining manner of the uplink and downlink absolute channel number calculation parameters according to practical situations to determine the uplink and downlink absolute channel numbers, which is not limited in this application.
Step S204: and according to the calculation parameters of the downlink absolute channel number, the corresponding downlink absolute channel number is obtained according to the downlink absolute channel number conversion formula.
Wherein,
the conversion formula of the uplink absolute channel number is as follows: n is a radical ofUL=NUL-ref+(FUL-FUL--ref)/a1；
The conversion formula of the downlink absolute channel number is as follows: n is a radical ofDL=NDL-ref+(FDL-FDL-ref)/a2；
In the above formula, FULRepresenting an uplink central physical frequency point, FUL-refRepresents an uplink physical frequency reference value, a1Representing the first frequency point conversion factor, NULIndicating the absolute channel number, N, of the uplinkUL-refIndicating an uplink absolute channel number reference value; fDLIndicating a downlink central physical frequency point, FDL-refDenotes a reference value of a downlink physical frequency, a2Representing the second frequency conversion factor, NDLIndicating the absolute channel number, N, of the downlinkDL-refIndicating the downlink absolute channel number reference value.
The physical frequency reference value refers to a value that can be selected as a reference value in a physical frequency range of the frequency band, for example, the aforementioned lowest value of the physical frequency range corresponding to the frequency band, and the uplink/downlink physical frequency reference value of the frequency band is the default lowest value of the uplink/downlink physical frequency range of the frequency band; the absolute channel number reference value refers to a value that can be selected as a reference value in the absolute channel number range of the frequency band, such as the aforementioned lowest value of the absolute channel number range corresponding to the frequency band, and the uplink/downlink absolute channel number reference value of the frequency band is the lowest value of the uplink/downlink absolute channel number range of the frequency band by default.
In this embodiment, the uplink and downlink absolute channel numbers of the same frequency band are calculated, and the uplink and downlink physical frequency ranges corresponding to the frequency band are completely the same, so in the above formula, a1＝a2If a is used to represent the frequency point conversion system, the above formula can be simplified as follows:
the conversion formula of the uplink absolute channel number is as follows: n is a radical ofUL=NUL-ref+(FUL–FUL-ref)/a；
The conversion formula of the downlink absolute channel number is as follows: n is a radical ofDL=NDL-ref+(FDL–FDL-ref)/a。
The frequency point conversion coefficient a/a1/a2, also called step value, needs to be set to 0.1 for the standard frequency band, and can be set according to the actual requirement for the non-standard frequency band.
When frequency point conversion coefficient a (or a)1Or a2) If =0.1, the frequency point calculation parameters of the existing standard frequency band can be used, and the above formula is equivalent to the standard frequency point conversion formula defined in the 36.101 protocol, and the frequency point conversion coefficient a (or a) can be obtained1Or a2) When the value is not 0.1, the formula can flexibly meet various conversion requirements. Therefore, the conversion formula of the uplink and downlink frequency points can meet the conversion requirements of various manufacturers on the non-standard frequency points, allows the manufacturers to specify the non-standard BAND, F and EARFCN outside the protocol, also keeps the support of the standard formula, can be compatible with the existing implementation scheme completely, meets more requirements of the actual LTE system on the frequency point conversion, unifies the calculation formula, and avoids introducing divergence.
Of course, when the unidirectional absolute channel number is calculated and the frequency band is changed, for example, the frequency band is changed from 1.6GHz to 2.5GHz, the frequency point conversion coefficient used for calculating the uplink absolute channel number of 1.6GHz is different from the frequency point conversion coefficient used for calculating the downlink absolute channel number of 2.5GHz, and at this time, a is different1Is not equal to a2. When the absolute channel numbers of the uplink and the downlink of 1.6GHz are calculated and the physical frequency ranges of the uplink and the downlink of 1.6GHz are completely the same, the used frequency point conversion coefficients are the same; the frequency point conversion coefficients used when the absolute channel numbers of the uplink and the downlink of 2.5GHz are calculated and the physical frequency ranges of the uplink and the downlink of 2.5GHz are completely the same are also the same.
Step S206: using the information of the uplink absolute channel number carried by the air interface message to inform the communication frequency band currently used by the base station; and/or using the information of the obtained downlink absolute channel number carried by the air interface message to inform the terminal of the currently used communication frequency band.
Step S208: acquiring an uplink central physical frequency point according to the uplink physical frequency reference value, the uplink absolute channel number reference value and the frequency point conversion coefficient; and acquiring the downlink central physical frequency point according to the downlink physical frequency reference value, the downlink absolute channel number reference value and the frequency point conversion coefficient.
This step is an optional step for the case where the central physical frequency point is calculated from the absolute channel number.
Since the first frequency point conversion coefficient is the same as the second frequency point conversion coefficient in this embodiment, the first frequency point conversion coefficient is collectively referred to as a frequency point conversion coefficient in this step.
Preferably, the uplink frequency point conversion formula may be further configured according to the uplink physical frequency reference value, the uplink absolute channel number reference value, and the first frequency point conversion coefficient: fUL=FUL-ref+a1(NUL–NUL-ref) Acquiring an uplink central physical frequency point; according to the reference value of the downlink physical frequency, the number of the downlink absolute channels, the reference value of the number of the downlink absolute channels and the second frequency point conversion coefficient, according to a downlink frequency point conversion formula: fDL=FDL-ref+a2(NDL–NDL-ref) And acquiring the physical frequency point of the downlink center. The meaning of each parameter in the up and down frequency point conversion formula is the same as that in the up and down absolute channel number conversion formula.
In this example, the factor a1＝a2And a is used as a, the formula is simplified as follows:
the conversion formula of the uplink frequency point is as follows: fUL=FUL-ref+a(NUL–NUL-ref)；
Downlink frequency point conversion formula: fDL=FDL-ref+a(NDL-NDL-ref)。
The center physical frequency point is a parameter that is used by a physical layer more in the internal implementation of an eNodeB and a terminal, for example, a cell is searched according to a certain physical center frequency during cell search. While the absolute channel number is a parameter used for communication in air interface messages and is a parameter used by higher layers.
It should be noted that, in this embodiment, the uplink absolute channel number and the downlink absolute channel number are taken as an example, but in practical applications, there may be a case where only the absolute channel number needs to be acquired, or only the downlink absolute channel number needs to be acquired, and those skilled in the art may perform the above operations with reference to the corresponding parts in this embodiment.
By the scheme of the embodiment, frequency bands outside the 36.101 protocol regulation can be supported, the configurable information in the initial data configuration file is relaxed, and the application requirements of various manufacturers on non-standard frequency bands can be met; the frequency point conversion coefficient outside the protocol specification is supported, the strain capacity is stronger, and more frequency bands and frequency point conversion schemes can be supported; meanwhile, the method supports the mutual conversion linear calculation formula of F and EARFCN of standard and non-standard frequency bands, and unifies standard and non-standard.
EXAMPLE III
Referring to fig. 3, a block diagram of a frequency band notification apparatus according to a third embodiment of the present application is shown.
The frequency band notification apparatus of the present embodiment includes: a first obtaining module 302, configured to obtain an uplink absolute channel number calculation parameter and/or a downlink absolute channel number calculation parameter, where the uplink absolute channel number calculation parameter includes an uplink physical frequency reference value, an uplink central physical frequency point, an uplink absolute channel number reference value, and a first frequency point conversion coefficient, and the downlink absolute channel number calculation parameter includes a downlink physical frequency reference value, a downlink central physical frequency point, a downlink absolute channel number reference value, and a second frequency point conversion coefficient; a second obtaining module 304, configured to obtain a corresponding uplink absolute channel number and/or downlink absolute channel number according to the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter; the notifying module 306 is configured to use the air interface message to carry the information of the uplink absolute channel number or the information of the downlink absolute channel number to notify the currently used communication frequency band.
Preferably, the second acquiring moldA block 304, configured to calculate a parameter according to the uplink absolute channel number conversion formula: n is a radical ofUL=NUL-ref+（FUL–FUL-ref）/a1Acquiring the corresponding uplink absolute channel number, wherein FULRepresenting an uplink central physical frequency point, FUL-refRepresents an uplink physical frequency reference value, a1Representing the first frequency point conversion factor, NULIndicating the absolute channel number, N, of the uplinkUL-refIndicating an uplink absolute channel number reference value; and/or, the downlink absolute channel number conversion formula is used for calculating parameters according to the downlink absolute channel number: n is a radical ofDL=NDL-ref+（FDL-FDL-ref）/a2Acquiring the corresponding downlink absolute channel number, wherein FDLIndicating a downlink central physical frequency point, FDL-refDenotes a reference value of a downlink physical frequency, a2Representing the second frequency conversion factor, NDLIndicating the absolute channel number, N, of the downlinkDL-refIndicating the downlink absolute channel number reference value.
Preferably, the frequency band notification apparatus of this embodiment further includes: a third obtaining module 308, configured to obtain an uplink central physical frequency point according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value, and the first frequency point conversion coefficient; and/or acquiring the downlink central physical frequency point according to the downlink absolute channel number reference value, the downlink absolute channel number, the downlink physical frequency reference value and the second frequency point conversion coefficient.
Preferably, the third obtaining module 308 is configured to, according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value, and the first frequency point conversion coefficient, according to an uplink frequency point conversion formula: fUL=FUL-ref+a1（NUL–NUL-ref) Acquiring an uplink central physical frequency point; and/or, according to the downlink absolute channel number reference value, the downlink absolute channel number, the downlink physical frequency reference value and the second frequency point conversion coefficient, according to a downlink frequency point conversion formula: fDL=FDL-ref+a2（NDL–NDL-ref) And acquiring the physical frequency point of the downlink center.
Preferably, the first obtaining module 302 is configured to receive an input uplink absolute channel number calculation parameter and/or a downlink absolute channel number calculation parameter through a parameter input interface; or, obtaining the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter from the initial data configuration file of the base station or the terminal.
It should be noted that, when the absolute channel numbers of the uplink and the downlink in the same frequency band are calculated, and the physical frequency ranges of the uplink and the downlink corresponding to the frequency band are completely the same, the first frequency point conversion coefficient and the second frequency point conversion coefficient take the same value.
The frequency band notification apparatus of this embodiment is used to implement the corresponding frequency band notification method in the foregoing multiple method embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described herein again.
The application provides a frequency band notification scheme, which comprises a normative scheme of applying a nonstandard frequency band and a nonstandard frequency point conversion formula so as to meet the special requirements of different manufacturers on frequency band use. For the frequency point conversion formula of the present application, F (central physical frequency point) and EARFCN (absolute channel number) in the formula allow for using values outside the 36.101 protocol specification, i.e. non-standard frequency point values. Moreover, the fixed conversion coefficient in the original formula is expanded into a variable coefficient a (namely, a frequency point conversion coefficient), so that the conversion formula has more universality, the conversion requirements of standard frequency bands and non-standard frequency bands are met, and convenience is provided for practical application. The scheme of the application can simultaneously support the standard frequency band specified by the protocol and the non-standard frequency band outside the protocol, and conveniently and quickly complete the conversion calculation of the physical frequency point and the absolute channel number; the frequency point conversion formula is unified between a standard and a non-standard, and all parameters of the conversion formula can be supported; supporting frequency point conversion coefficients outside the protocol specification so as to meet the requirements of different manufacturers on frequency point conversion; the unification of the implementation scheme is realized for both eNodeB and the terminal, and a set of software can be used for coping with special applications of different manufacturers.
In addition, it should be noted that the scheme of the present application can be applied not only to actual communication equipment, such as an eNodeB or a terminal, but also to other suitable applications, such as application in a TD-LTE radio frequency conformance test instrument. On the operation interface of the instrument, a user is allowed to configure a nonstandard frequency band value, a physical frequency reference value, an absolute channel number reference value, a frequency point conversion coefficient and the like, and the use requirements of a terminal manufacturer on the nonstandard frequency band are met.
In addition, the scheme of the present application is not limited to the LTE system, and those skilled in the art can refer to the embodiment of the present application to apply the non-standard frequency band and non-standard frequency point conversion scheme in the present application to other systems in similar situations.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The frequency band notification method and device provided by the present application are introduced in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (6)
1. A frequency band notification method is characterized by comprising the following steps:
acquiring an uplink absolute channel number calculation parameter and/or a downlink absolute channel number calculation parameter, wherein the uplink absolute channel number calculation parameter comprises an uplink physical frequency reference value, an uplink central physical frequency point, an uplink absolute channel number reference value and a first frequency point conversion coefficient, and the downlink absolute channel number calculation parameter comprises a downlink physical frequency reference value, a downlink central physical frequency point, a downlink absolute channel number reference value and a second frequency point conversion coefficient;
acquiring corresponding uplink absolute channel number and/or downlink absolute channel number according to the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter;
using an air interface message to carry the information of the uplink absolute channel number or the information of the downlink absolute channel number to inform a currently used communication frequency band;
the step of obtaining the corresponding uplink absolute channel number according to the uplink absolute channel number calculation parameter includes: calculating parameters according to the uplink absolute channel number, and according to an uplink absolute channel number conversion formula: n is a radical ofUL＝NUL-ref+(FUL–FUL-ref)/a1Acquiring the corresponding uplink absolute channel number, wherein NULIndicating the absolute channel number, N, of the uplinkUL-refIndicating an absolute channel number reference value, F, of the uplinkULRepresenting an uplink central physical frequency point, FUL-refRepresents an uplink physical frequency reference value, a1Representing a first frequency point conversion coefficient;
the step of obtaining the corresponding downlink absolute channel number according to the downlink absolute channel number calculation parameter includes: calculating parameters according to the downlink absolute channel number, and according to a downlink absolute channel number conversion formula: n is a radical ofDL＝NDL-ref+(FDL–FDL-ref)/a2Acquiring the corresponding downlink absolute channel number, wherein NDLIndicating the absolute channel number, N, of the downlinkDL-refIndicating a reference value, F, of the absolute channel number in the downlinkDLIndicating a downlink central physical frequency point, FDL-refDenotes a reference value of a downlink physical frequency, a2Representing a second frequency point conversion coefficient;
wherein the step of obtaining the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter comprises:
receiving the input uplink absolute channel number calculation parameters and/or downlink absolute channel number calculation parameters through a parameter input interface; or, obtaining the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter from an initial data configuration file of a base station or a terminal.
2. The method of claim 1, further comprising:
acquiring the uplink central physical frequency point according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value and the first frequency point conversion coefficient;
and/or the presence of a gas in the gas,
and acquiring the downlink central physical frequency point according to the reference value of the downlink absolute channel number, the reference value of the downlink physical frequency and the second frequency point conversion coefficient.
3. The method of claim 2,
the step of obtaining the uplink central physical frequency point according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value and the first frequency point conversion coefficient comprises: according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value and the first frequency point conversion coefficient, according to an uplink frequency point conversion formula: fUL＝FUL-ref+a1(NUL–NUL-ref) Acquiring the physical frequency point of the uplink center;
the step of obtaining the downlink central physical frequency point according to the reference value of the downlink absolute channel number, the reference value of the downlink physical frequency and the second frequency point conversion coefficient comprises: according to the reference value of the downlink absolute channel number, the reference value of the downlink physical frequency and the second frequency point conversion coefficient, according to a downlink frequency point conversion formula: fDL＝FDL-ref+a2(NDL–NDL-ref) And acquiring the physical frequency point of the downlink center.
4. A frequency band notification apparatus, comprising:
a first obtaining module, configured to obtain an uplink absolute channel number calculation parameter and/or a downlink absolute channel number calculation parameter, where the uplink absolute channel number calculation parameter includes an uplink physical frequency reference value, an uplink central physical frequency point, an uplink absolute channel number reference value, and a first frequency point conversion coefficient, and the downlink absolute channel number calculation parameter includes a downlink physical frequency reference value, a downlink central physical frequency point, a downlink absolute channel number reference value, and a second frequency point conversion coefficient;
a second obtaining module, configured to obtain a corresponding uplink absolute channel number and/or downlink absolute channel number according to the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter;
a notification module, configured to use an air interface message to carry the information of the uplink absolute channel number or the information of the downlink absolute channel number to notify a currently used communication frequency band;
the second obtaining module is specifically configured to calculate a parameter according to the uplink absolute channel number, and according to an uplink absolute channel number conversion formula: n is a radical ofUL＝NUL-ref+(FUL–FUL-ref)/a1Acquiring the corresponding uplink absolute channel number, wherein NULIndicating the absolute channel number, N, of the uplinkUL-refIndicating an absolute channel number reference value, F, of the uplinkULRepresenting an uplink central physical frequency point, FUL-refRepresents an uplink physical frequency reference value, a1Representing a first frequency point conversion coefficient; and/or, configured to calculate a parameter according to the downlink absolute channel number, and according to a downlink absolute channel number conversion formula: n is a radical ofDL＝NDL-ref+(FDL–FDL-ref)/a2Acquiring the corresponding downlink absolute channel number, wherein NDLIndicating the absolute channel number, N, of the downlinkDL-refIndicating a reference value, F, of the absolute channel number in the downlinkDLIndicating a downlink central physical frequency point, FDL-refDenotes a reference value of a downlink physical frequency, a2Representing a second frequency point conversion coefficient;
the first obtaining module is configured to receive, through a parameter input interface, the input uplink absolute channel number calculation parameter and/or the input downlink absolute channel number calculation parameter; or, obtaining the uplink absolute channel number calculation parameter and/or the downlink absolute channel number calculation parameter from an initial data configuration file of a base station or a terminal.
5. The apparatus of claim 4, further comprising:
a third obtaining module, configured to obtain the uplink central physical frequency point according to the uplink absolute channel number reference value, the absolute channel number, the uplink physical frequency reference value, and the first frequency point conversion coefficient; and/or acquiring the downlink central physical frequency point according to the reference value of the downlink absolute channel number, the reference value of the downlink physical frequency and the second frequency point conversion coefficient.
6. The apparatus according to claim 5, wherein the third obtaining module is configured to, according to the uplink absolute channel number reference value, the uplink absolute channel number, the uplink physical frequency reference value, and the first frequency point conversion coefficient, according to an uplink frequency point conversion formula: fUL＝FUL-ref+a1(NUL–NUL-ref) Acquiring the physical frequency point of the uplink center; and/or, configured to, according to the downlink absolute channel number reference value, the downlink absolute channel number, the downlink physical frequency reference value, and the second frequency point conversion coefficient, according to a downlink frequency point conversion formula: fDL＝FDL-ref+a2(NDL–NDL-ref) And acquiring the physical frequency point of the downlink center.
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| CN104968022A (en) * | 2015-05-28 | 2015-10-07 | 大唐移动通信设备有限公司 | User equipment network redirecting method and system |
| CN106454972B (en) * | 2015-08-10 | 2020-04-10 | 中国移动通信集团公司 | Method and device for switching signals between same physical frequency points and different frequency point numbers |
| CN117294372B (en) * | 2023-11-23 | 2024-02-09 | 上海芯袖微电子科技有限公司 | Frequency conversion control method, device and system |
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