CN105493549B

CN105493549B - Cell center frequency point obtaining and indicating method and device

Info

Publication number: CN105493549B
Application number: CN201380000243.9A
Authority: CN
Inventors: 陈东; 舒兵; 罗春桥
Original assignee: Jiangsu Xingditong Communication Technology Co ltd
Current assignee: Jiangsu Xingditong Communication Technology Co ltd
Priority date: 2013-03-20
Filing date: 2013-03-20
Publication date: 2020-06-23
Anticipated expiration: 2033-03-20
Also published as: CN105493549A

Abstract

The embodiment of the invention provides a method and a device for acquiring and indicating a cell center frequency point. The cell center frequency point acquisition method comprises the following steps: receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point and differential information used for indicating the frequency difference between the first frequency point and a second frequency point, wherein the channel number UARFCN is sent by a base station; the second frequency point is the central frequency point of the cell; and acquiring a second frequency point according to the UARFCN and the difference information. According to the cell center frequency point obtaining and indicating method and device provided by the embodiment of the invention, the information of the second frequency point is transmitted through the existing difference information of the difference between the UARFCN and the first frequency point, which corresponds to the first frequency point, and the frequency difference of the second frequency point, so that the second frequency point can indicate the center frequency point of any cell in each frequency band.

Description

Cell center frequency point obtaining and indicating method and device

Technical Field

The embodiment of the invention relates to a communication technology, in particular to a method and a device for acquiring and indicating a cell center frequency point.

Background

In the Third Generation Partnership Project (3 GPP), an Absolute radio frequency Channel Number (UARFCN) of a cell of a Universal Mobile Telecommunications System is corresponding to a central frequency point of a cell that can be used by a user equipment, and the user equipment can acquire a frequency value of the central frequency point corresponding to the UARFCN through the UARFCN, thereby detecting the cell corresponding to the central frequency point.

Currently, in 3GPP, the frequency value of the central frequency point corresponding to UARFCN is based on 200KHz as a grid (raster), that is, the intervals between the frequency points represented by UARFCN are all integer multiples of 200 KHz. The actual interval of the central frequency points of each cell is not necessarily integral multiple of 200KHz, and the existing UARFCN can not indicate the central frequency points of all cells.

In addition, with the increase of newly allocated frequency bands, currently, 3GPP does not define corresponding UARFCNs for frequency points in the newly allocated frequency bands, so that the newly allocated frequency bands cannot be used in 3 GPP.

Disclosure of Invention

The embodiment of the invention provides a method and a device for acquiring and indicating a cell center frequency point.

In a first aspect, a method for acquiring a cell center frequency provided in an embodiment of the present invention includes:

receiving Universal Telecommunication Radio Access (UTRA) Absolute Radio frequency Channel Number (Absolute Radio frequency Channel Number) UARFCN corresponding to a first frequency point sent by a base station and differential information used for indicating the frequency difference between the first frequency point and a second frequency point; the second frequency point is a central frequency point of the cell; and acquiring the second frequency point according to the UARFCN and the differential information.

In a first possible implementation manner of the first aspect, the difference information is a frequency value or mapping information of the frequency value; correspondingly, acquiring the second frequency point according to the UARFCN and the differential information includes: and acquiring the first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire the second frequency point.

In a second possible implementation manner of the first aspect, the difference information includes multiple information n of frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, acquiring the second frequency point according to the UARFCN and the differential information includes: and acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the following formula, wherein F = Fc + g × n.

In a third possible implementation manner of the first aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the cell is the scalable UMTS cell; the delta information comprises the N; correspondingly, acquiring the second frequency point according to the UARFCN and the differential information includes: and acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the first frequency point Fc, the N and the bandwidth W of the UMTS cell.

According to a third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; correspondingly, acquiring the second frequency point F according to the first frequency point Fc, the N, and the bandwidth W of the UMTS cell includes: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

In a fifth possible implementation manner of the first aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; correspondingly, acquiring the second frequency point according to the UARFCN and the differential information includes: acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

In a second aspect, a method for indicating a center frequency point of a cell provided in an embodiment of the present invention includes:

and sending a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point and differential information used for indicating the frequency difference between the first frequency point and a second frequency point to a terminal device so that the terminal device can obtain the second frequency point according to the UARFCN and the differential information, wherein the second frequency point is a central frequency point of a cell.

In a first possible implementation manner of the second aspect, the difference information is a frequency value or mapping information of the frequency value; correspondingly, the sending the UARFCN and the difference information to the terminal device for the terminal device to obtain the second frequency point according to the UARFCN and the difference information includes: and sending the UARFCN and the differential information to the terminal equipment so that the terminal equipment can acquire the first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire the second frequency point.

In a second possible implementation manner of the second aspect, the difference information includes multiple information n of frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, the sending the UARFCN and the difference information to the terminal device for the terminal device to obtain the second frequency point according to the UARFCN and the difference information includes: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain the first frequency point Fc according to the UARFCN and obtain the second frequency point F according to the following formula, wherein F = Fc + g × n.

In a third possible implementation manner of the second aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the cell is the scalable UMTS cell; the delta information comprises the N; correspondingly, the sending the UARFCN and the difference information to the terminal device for the terminal device to obtain the second frequency point according to the UARFCN and the difference information includes: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire the first frequency point Fc according to the UARFCN and acquire the second frequency point F according to the first frequency point Fc, the N and the bandwidth W of the UMTS cell.

According to a third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; correspondingly, the sending the UARFCN and the difference information to the terminal device for the terminal device to obtain the first frequency point Fc according to the UARFCN and obtain the second frequency point F according to the first frequency point Fc, the N, and the bandwidth W of the UMTS cell includes: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire the first frequency point Fc according to the UARFCN and acquire the second frequency point F according to the following formula, wherein F = Fc + W/(2 x N).

In a fifth possible implementation manner of the second aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell respectively; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; correspondingly, the sending the UARFCN and the difference information to the terminal device for the terminal device to obtain the second frequency point according to the UARFCN and the difference information includes: sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain the first frequency point Fc according to the UARFCN and obtain the second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

In a third aspect, another method for indicating a center frequency point of a cell according to an embodiment of the present invention includes: acquiring a universal telecommunications radio access UTRA absolute radio frequency point channel number UARFCN corresponding to each central frequency point in the frequency range according to the frequency range and a preset grid, wherein the frequency range is a continuous frequency range taking 0 as a starting point and taking a maximum frequency value as an end point; and sending a target UARFCN corresponding to the central frequency point used by the terminal equipment to the terminal equipment, so that the terminal equipment can acquire the central frequency point according to the target UARFCN and the preset grid.

In a first possible implementation manner of the third aspect, the obtaining, according to the frequency range and the preset grid, the UARFCN corresponding to each center frequency point in the frequency range includes: acquiring the number of central frequency points in the frequency range according to the frequency range and the preset grid, wherein the UARFCN corresponding to each central frequency point is consistent with the serial number of each central frequency point; the sending, to a terminal device, a target UARFCN corresponding to a center frequency point used by the terminal device, so that the terminal device obtains the center frequency point according to the target UARFCN and the preset grid, includes: and sending a target UARFCN corresponding to a central frequency point F1 used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point F1 according to the following formula, wherein F1= UARFCN.

In a fourth aspect, another method for acquiring a center frequency point of a cell provided in an embodiment of the present invention includes:

receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a central frequency point sent by a base station and a first indication, wherein the first indication comprises identification information used for identifying a grid corresponding to the UARFCN; and acquiring the central frequency point according to the UARFCN and the identification information.

In a first possible implementation manner of the fourth aspect, the receiving the UARFCN and the first indication corresponding to the center frequency point sent by the base station includes: and receiving an indication message sent by a base station, wherein the indication message comprises the UARFCN and the first indication.

According to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the acquiring the center frequency point according to the UARFCN and the identification information includes: acquiring a corresponding grid S according to the identification information; obtaining the central frequency point F2 according to the following formula, wherein F2= UARFCN S + F_OffsetWherein F is_OffsetAnd the frequency value is the basic frequency value of the frequency band where the central frequency point F2 is located.

In a fifth aspect, another method for indicating a center frequency point of a cell provided in an embodiment of the present invention includes:

and sending a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a central frequency point and a first indication to a terminal device, wherein the first indication comprises identification information used for identifying a grid corresponding to the UARFCN, so that the terminal device acquires the central frequency point according to the UARFCN and the identification information.

In a first possible implementation manner of the fifth aspect, the sending, to the terminal device, the UARFCN corresponding to the center frequency point and the first indication includes: and sending an indication message to the terminal equipment, wherein the indication message comprises the UARFCN and the first indication.

According to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the sending, to the terminal device, a UARFCN corresponding to a center frequency point and a first indication, where the first indication includes identification information used for identifying a grid corresponding to the UARFCN, so that the terminal device obtains the center frequency point according to the UARFCN and the identification information includes: sending a UARFCN and a first indication corresponding to a central frequency point to a terminal device, wherein the first indication comprises identification information for identifying a grid corresponding to the UARFCN, so that the terminal device obtains a corresponding grid S according to the identification information, and obtains the central frequency point F2 according to the following formula, F2= UARFCN S + F_OffsetWherein F is_OffsetAnd the frequency value is the basic frequency value of the frequency band where the central frequency point F2 is located.

In a sixth aspect, an apparatus for acquiring a cell center frequency provided in an embodiment of the present invention includes: the receiving module is used for receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point sent by a base station and differential quantity information used for indicating the frequency difference between the first frequency point and a second frequency point; the second frequency point is a central frequency point of the cell; and the processing module is used for acquiring the second frequency point according to the UARFCN and the differential information.

In a first possible implementation manner of the sixth aspect, the difference information is a frequency value or mapping information of the frequency value; correspondingly, the processing module is specifically configured to: and acquiring the first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire the second frequency point.

In a second possible implementation manner of the sixth aspect, the difference information includes multiple information n of frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, the processing module is specifically configured to: and acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the following formula, wherein F = Fc + g × n.

In a third possible implementation manner of the sixth aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the delta information comprises the N; correspondingly, the processing module is specifically configured to: and acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the first frequency point Fc, the N and the bandwidth W of the UMTS cell.

According to a third possible implementation manner of the sixth aspect, in a fourth possible implementation manner of the sixth aspect, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; correspondingly, the processing module is specifically configured to: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

In a fifth possible implementation manner of the sixth aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell respectively; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; correspondingly, the processing module is specifically configured to: acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

In a seventh aspect, an apparatus for indicating a cell center frequency point provided in an embodiment of the present invention includes:

the terminal equipment comprises a sending module and a receiving module, wherein the sending module is used for sending a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point and differential information used for indicating the frequency difference between the first frequency point and a second frequency point to the terminal equipment so as to obtain the second frequency point according to the UARFCN and the differential information, and the second frequency point is a central frequency point of a cell.

In a first possible implementation manner of the seventh aspect, the difference information is a frequency value or mapping information of the frequency value; correspondingly, the sending module is specifically configured to: and sending the UARFCN and the differential information to the terminal equipment so that the terminal equipment can acquire the first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire the second frequency point.

In a second possible implementation manner of the seventh aspect, the difference information includes multiple information n of frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, the sending module is specifically configured to: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain the first frequency point Fc according to the UARFCN and obtain the second frequency point F according to the following formula, wherein F = Fc + g × n.

In a third possible implementation manner of the seventh aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the delta information comprises the N; correspondingly, the sending module is specifically configured to: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire the first frequency point Fc according to the UARFCN and acquire the second frequency point F according to the first frequency point Fc, the N and the bandwidth W of the UMTS cell.

According to a third possible implementation manner of the seventh aspect, in a fourth possible implementation manner of the seventh aspect, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; correspondingly, the sending module is specifically configured to: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

In a fifth possible implementation manner of the seventh aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; correspondingly, the sending module is specifically configured to: sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain the first frequency point Fc according to the UARFCN and obtain the second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

In an eighth aspect, another apparatus for indicating a center frequency of a cell provided in an embodiment of the present invention includes:

the acquisition module is used for acquiring a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to each central frequency point in a frequency range according to the frequency range and a preset grid, wherein the frequency range is a continuous frequency range taking 0 as a starting point and taking a maximum frequency value as a terminal point; and the sending module is used for sending a target UARFCN corresponding to the central frequency point used by the terminal equipment to the terminal equipment so that the terminal equipment can acquire the central frequency point according to the target UARFCN and the preset grid.

In a first possible implementation manner of the eighth aspect, the obtaining module is specifically configured to: acquiring the number of central frequency points in the frequency range according to the frequency range and the preset grid, wherein the UARFCN corresponding to each central frequency point is consistent with the serial number of each central frequency point; the sending module is specifically configured to: and sending a target UARFCN corresponding to a central frequency point F1 used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point F1 according to the following formula, wherein F1= UARFCN.

In a ninth aspect, another apparatus for acquiring a center frequency point of a cell provided in the embodiment of the present invention includes:

the system comprises a receiving module and a first indicating module, wherein the receiving module is used for receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN which corresponds to a central frequency point and is sent by a base station, and the first indicating module comprises identification information which is used for identifying a grid corresponding to the UARFCN; and the processing module is used for acquiring the central frequency point according to the UARFCN and the identification information.

In a first possible implementation manner of the ninth aspect, the receiving module is specifically configured to: and receiving an indication message sent by a base station, wherein the indication message comprises the UARFCN and the first indication.

According to the ninth aspect or the first possible implementation manner of the ninth aspect, in a second possible implementation manner of the ninth aspect, the processing module is specifically configured to: acquiring a corresponding grid S according to the identification information; obtaining the central frequency point F2 according to the following formula, wherein F2= UARFCN S + F_OffsetWherein F is_OffsetAnd the frequency value is the basic frequency value of the frequency band where the central frequency point F2 is located.

In a tenth aspect, a device for indicating center frequency points of a cell provided in an embodiment of the present invention includes:

the system comprises a sending module and a terminal device, wherein the sending module is used for sending a universal telecommunications radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a central frequency point and a first indication, and the first indication comprises identification information used for identifying a grid corresponding to the UARFCN, so that the terminal device can acquire the central frequency point according to the UARFCN and the identification information.

In a first possible implementation manner of the tenth aspect, the sending module is specifically configured to: and sending an indication message to the terminal equipment, wherein the indication message comprises the UARFCN and the first indication.

According to the tenth aspect or the first possible implementation manner of the tenth aspect, in a second possible implementation manner of the tenth aspect: sending a UARFCN and a first indication corresponding to the central frequency point to a terminal device, wherein the first indication comprises identification information for identifying a grid corresponding to the UARFCN, so that the terminal device obtains the corresponding grid S according to the identification information and according to the following stepsObtaining the central frequency point F2 by a formula, wherein F2= UARFCN S + F_OffsetWherein F is_OffsetAnd the frequency value is the basic frequency value of the frequency band where the central frequency point F2 is located.

In an eleventh aspect, another apparatus for acquiring a cell center frequency provided in the embodiment of the present invention includes:

the system comprises a receiver and a base station, wherein the receiver is used for receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point sent by the base station and differential quantity information used for indicating the frequency difference between the first frequency point and a second frequency point; the second frequency point is a central frequency point of the cell; and the processor is used for acquiring the second frequency point according to the UARFCN and the differential information.

In a first possible implementation manner of the eleventh aspect, the delta information is a frequency value or mapping information of the frequency value; accordingly, the processor is specifically configured to: and acquiring the first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire the second frequency point.

In a second possible implementation manner of the eleventh aspect, the difference information includes multiple information n of frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; accordingly, the processor is specifically configured to: and acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the following formula, wherein F = Fc + g × n.

In a third possible implementation manner of the eleventh aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the delta information comprises the N; accordingly, the processor is specifically configured to: and acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the first frequency point Fc, the N and the bandwidth W of the UMTS cell.

According to a third possible implementation manner of the eleventh aspect, in a fourth possible implementation manner of the eleventh aspect, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; accordingly, the processor is specifically configured to: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

In a fifth possible implementation manner of the eleventh aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell respectively; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; accordingly, the processor is specifically configured to: acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

In a twelfth aspect, an apparatus for indicating a center frequency point of a cell provided in an embodiment of the present invention includes:

the transmitter is used for transmitting a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point and differential information used for indicating the frequency difference between the first frequency point and a second frequency point to a terminal device, so that the terminal device can obtain the second frequency point according to the UARFCN and the differential information, and the second frequency point is a central frequency point of a cell.

In a first possible implementation manner of the twelfth aspect, the delta information is a frequency value or mapping information of the frequency value; accordingly, the transmitter is specifically configured to: and sending the UARFCN and the differential information to the terminal equipment so that the terminal equipment can acquire the first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire the second frequency point.

In a second possible implementation manner of the twelfth aspect, the difference information includes multiple information n of frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; accordingly, the transmitter is specifically configured to: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain the first frequency point Fc according to the UARFCN and obtain the second frequency point F according to the following formula, wherein F = Fc + g × n.

In a third possible implementation manner of the twelfth aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the delta information comprises the N; accordingly, the transmitter is specifically configured to: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire the first frequency point Fc according to the UARFCN and acquire the second frequency point F according to the first frequency point Fc, the N and the bandwidth W of the UMTS cell.

According to a third possible implementation manner of the twelfth aspect, in a fourth possible implementation manner of the twelfth aspect, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; accordingly, the transmitter is specifically configured to: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

In a fifth possible implementation manner of the twelfth aspect, the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell respectively; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; accordingly, the transmitter is specifically configured to: sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain the first frequency point Fc according to the UARFCN and obtain the second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

In a thirteenth aspect, an embodiment of the present invention further provides a device for indicating a center frequency of a cell, where the device includes:

the processor is used for acquiring a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to each central frequency point in the frequency range according to the frequency range and a preset grid, wherein the frequency range is a continuous frequency range taking 0 as a starting point and taking a maximum frequency value as a terminal point; and the transmitter is used for transmitting a target UARFCN corresponding to the central frequency point used by the terminal equipment to the terminal equipment so that the terminal equipment can acquire the central frequency point according to the target UARFCN and the preset grid.

In a first possible implementation manner of the thirteenth aspect, the processor is specifically configured to: acquiring the number of central frequency points in the frequency range according to the frequency range and the preset grid, wherein the UARFCN corresponding to each central frequency point is consistent with the serial number of each central frequency point; the transmitter is specifically configured to: and sending a target UARFCN corresponding to a central frequency point F1 used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point F1 according to the following formula, wherein F1= UARFCN.

In a fourteenth aspect, an embodiment of the present invention further provides a device for acquiring a cell center frequency, where the device includes:

the system comprises a receiver and a base station, wherein the receiver is used for receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN and a first indication which are sent by the base station and correspond to a central frequency point, and the first indication comprises identification information used for identifying a grid corresponding to the UARFCN; and the processor is used for acquiring the central frequency point according to the UARFCN and the identification information.

In a first possible implementation manner of the fourteenth aspect, the receiver is specifically configured to: and receiving an indication message sent by a base station, wherein the indication message comprises the UARFCN and the first indication.

According to the fourteenth aspect or the first possible implementation manner of the fourteenth aspect, in a second possible implementation manner of the fourteenth aspect, the processor is specifically configured to: acquiring a corresponding grid S according to the identification information; obtaining the central frequency point F2 according to the following formula, wherein F2= UARFCN S + F_OffsetWherein F is_OffsetAnd the frequency value is the basic frequency value of the frequency band where the central frequency point F2 is located.

In a fifteenth aspect, an embodiment of the present invention further provides a device for indicating a cell center frequency, where the device includes:

the transmitter is used for transmitting a universal telecommunications radio access UTRA absolute radio frequency point channel number UARFCN and a first indication corresponding to a central frequency point to terminal equipment, wherein the first indication comprises identification information used for identifying a grid corresponding to the UARFCN, so that the terminal equipment can acquire the central frequency point according to the UARFCN and the identification information.

In a first possible implementation manner of the fifteenth aspect, the transmitter is specifically configured to: and sending an indication message to the terminal equipment, wherein the indication message comprises the UARFCN and the first indication.

According to the fifteenth aspect or the first possible implementation manner of the fifteenth aspect, in a second possible implementation manner of the fifteenth aspect, the transmitter is specifically configured to: sending a UARFCN and a first indication corresponding to a central frequency point to a terminal device, wherein the first indication comprises identification information for identifying a grid corresponding to the UARFCN, so that the terminal device obtains a corresponding grid S according to the identification information, and obtains the central frequency point F2 according to the following formula, F2= UARFCN S + F_OffsetWherein F is_OffsetAnd the frequency value is the basic frequency value of the frequency band where the central frequency point F2 is located.

According to the cell center frequency point obtaining and indicating method and device provided by the embodiment of the invention, the information of the second frequency point is transmitted through the existing difference information of the difference between the UARFCN and the first frequency point, which corresponds to the first frequency point, and the frequency difference of the second frequency point, so that the second frequency point can indicate the center frequency point of any cell in each frequency band.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1A is a flowchart of a first embodiment of a method for acquiring a cell center frequency point according to the present invention;

FIG. 1B is a diagram illustrating an embodiment of the FIG. 1A;

FIG. 1C is another exemplary diagram of the embodiment shown in FIG. 1A;

fig. 2 is a schematic diagram of a second embodiment of a method for acquiring a center frequency point of a cell according to the present invention;

fig. 3 is a schematic diagram of a third embodiment of a method for acquiring a center frequency point of a cell according to the present invention;

fig. 4 is a schematic diagram of a fourth embodiment of a method for acquiring a center frequency point of a cell according to the present invention;

fig. 5 is a flowchart of a fifth embodiment of a method for indicating a center frequency point of a cell according to the present invention;

FIG. 6 is an exemplary diagram of the embodiment shown in FIG. 5;

fig. 7 is a flowchart of a sixth embodiment of a method for acquiring a center frequency point of a cell according to the present invention;

fig. 8 is a schematic structural diagram of a first embodiment of a cell center frequency point obtaining apparatus according to the present invention;

fig. 9 is a schematic structural diagram of another embodiment of a cell center frequency point indicating device provided in the present invention;

fig. 10 is a schematic structural diagram of a second embodiment of a cell center frequency point obtaining apparatus provided in the present invention;

fig. 11 is a schematic structural diagram of a third embodiment of a cell center frequency point obtaining apparatus provided in the present invention;

fig. 12 is a schematic structural diagram of a cell center frequency point indicating device according to another embodiment of the present invention;

fig. 13 is a schematic structural diagram of a fourth embodiment of a cell center frequency point obtaining apparatus provided in the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1A is a flowchart of a first embodiment of a method for acquiring a center frequency point of a cell according to the present invention, and as shown in fig. 1A, the method for acquiring a center frequency point of a cell is described in this embodiment by taking a terminal device as an execution subject, and the method may include:

s110, receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point sent by a base station and differential quantity information used for indicating the frequency difference between the first frequency point and a second frequency point; the second frequency point is the central frequency point of the cell.

And S120, acquiring a second frequency point according to the UARFCN and the differential information.

Specifically, fig. 1B is an exemplary diagram of the embodiment shown in fig. 1A, as shown in fig. 1B, the second frequency point F is a central frequency point of a cell, and in 3GPP, there is no UARFCN corresponding to the second frequency point F. Then, the base station may determine a first frequency point Fc having the UARFCN, determine difference information Δ of a frequency difference between the first frequency point Fc and the second frequency point F, and send the UARFCN corresponding to the first frequency point Fc and the difference information Δ to the terminal device. After receiving the UARFCN and the difference information Δ corresponding to the first frequency point Fc, the terminal device may obtain the second frequency point F according to the UARFCN and the difference information Δ corresponding to the first frequency point Fc.

In the embodiment of the present invention, the base station may send the UARFCN and the difference information Δ through measurement control information, for example, send the UARFCN and the difference information Δ through a center frequency bin included in a frequency information cell in the measurement control information. Wherein the delta information Δ may be represented in the measurement control information by mapping information to save overhead of the measurement control information. For example, the difference information Δ of-50 kHz is represented by 0, the difference information Δ of-100 kHz is represented by 1, the difference information Δ of 50kHz is represented by 2, the difference information Δ of 100kHz is represented by 3, and so on.

In the method for acquiring a cell center frequency point provided in this embodiment, the terminal device acquires information of the second frequency point through difference information of a frequency difference between the existing UARFCN corresponding to the first frequency point and the first frequency point, where the difference information is different from the frequency difference between the first frequency point and the second frequency point, so that the center frequency point of any cell in each frequency band can be acquired.

Further, the difference information Δ may be a frequency value or mapping information of a frequency value; correspondingly, the step of acquiring the second frequency point by the terminal device according to the UARFCN and the difference information Δ includes: the terminal equipment acquires a first frequency point according to the UARFCN, and sums the first frequency point and the frequency value to acquire a second frequency point.

For example, fig. 1C is another exemplary diagram of the embodiment shown in fig. 1A, as shown in fig. 1C, the terminal device receives mapping information that UARFCN =3088 corresponding to the first frequency point Fc and the difference information Δ =0.1MHz or the frequency value 0.1MHz of the frequency difference between the first frequency point Fc and the second frequency point F, which is sent by the base station, so that the terminal device may determine that the first frequency point Fc =957.6MHz according to UARFCN =3088, and then,

the second frequency point F = the first frequency point Fc + the difference information Δ =957.6MHz +0.1MHz =957.7 MHz.

Preferably, when the absolute value of the difference information Δ is less than 200KHz or when the absolute value of the difference information Δ is not an integer multiple of 200KHz, the interval between the first frequency point Fc and the second frequency point F is not an integer multiple of 200 KHz. The value of the difference information Δ can be flexibly selected according to different distances from the first frequency point Fc to the second frequency point F, for example, the difference information Δ can be respectively-0.05 MHz, -0.025MHz, 0.75MHz, or 0.15MHz, and the like.

Further, the difference information includes multiple information n of the frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, acquiring the second frequency point according to the UARFCN and the difference information includes: the method comprises the steps of obtaining a first frequency point Fc according to UARFCN, and obtaining a second frequency point F according to the following formula, wherein F = Fc + g × n.

For example, fig. 2 is a schematic diagram of a second embodiment of the cell center frequency point obtaining method provided by the present invention, and as shown in fig. 2, the terminal device receives UARFCN =3088 corresponding to the first frequency point Fc and difference information Δ = frequency granularity information g × multiple information n of the frequency difference between the first frequency point Fc and the second frequency point F, where the frequency granularity information g =0.02MHz and the multiple information n =5, which are sent by the base station. The terminal device may determine, from UARFCN =3088, that the first frequency point Fc =957.6MHz, and, then,

second frequency point F = first frequency point Fc + frequency granularity information g × multiple information n

=957.6MHz+0.02MHz*5=957.7MHz。

In the method for acquiring a cell center frequency point provided in this embodiment, the frequency granularity information g may be fixedly set in the terminal device, or may be acquired from the base station by the terminal device. For example, the terminal device may obtain the frequency granularity information g from the base station through an air interface message, or may obtain the frequency granularity information g while obtaining the multiple information n. The terminal equipment can acquire different second frequency points F by acquiring different times of information n. When the value of the frequency granularity information g is less than 200KHz, the grid of the frequency value of the central frequency point of each cell is less than 200KHz, and the frequency value of the central frequency point of each cell actually takes the frequency granularity information g as the grid. The embodiment of the invention does not limit the value of the frequency granularity information g.

Furthermore, the first frequency point is a central frequency point of the UMTS cell, the bandwidth of the UMTS cell is averagely divided into N equal parts, and the N equal parts correspond to the telescopic UMTS cells respectively; the delta information includes N; correspondingly, acquiring the second frequency point according to the UARFCN and the difference information includes: and acquiring a first frequency point Fc according to the UARFCN, and acquiring a second frequency point F according to the first frequency point Fc, the first frequency point N and the bandwidth W of the UMTS cell. Specifically, the cell is a scalable UMTS cell with a center frequency point greater than the first frequency point and closest to the first frequency point; correspondingly, acquiring the second frequency point F according to the first frequency point Fc, N and the bandwidth W of the UMTS cell includes: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

For example, fig. 3 is a schematic diagram of a third embodiment of the cell center frequency point obtaining method provided by the present invention, as shown in fig. 3, a first frequency point Fc is a center frequency point of a UMTS cell, a bandwidth of the UMTS cell is W, the bandwidth W of the UMTS cell is evenly divided into N equal parts, and each equal part corresponds to a Scalable UMTS (Scalable UMTS, hereinafter referred to as S-UMTS) cell. Then the central frequency point of the S-UMTS cell closest to the central frequency point of the UMTS cell, i.e., the first frequency point Fc, i.e., the second frequency point F, may be obtained through the UARFCN corresponding to the first frequency point Fc, and the bandwidths W and N of the UMTS cell.

Specifically, if the terminal device receives UARFCN =3088 corresponding to the first frequency point Fc sent by the base station, the bandwidth W =5MHz of the UMTS cell, and the UMTS cell is divided into 4 equal parts on average. Then, the terminal device may determine the first frequency point Fc =957.6MHz according to UARFCN = 3088; and the central frequency point of the S-UMTS cell nearest to the first frequency point Fc, namely the second frequency point F, is:

F=Fc+W/(2*N)=957.6MHz+5MHz/（2*4）=958.225MHz。

on the basis of this embodiment, it can also be known that, if the second frequency point F is smaller than the first frequency point Fc, and the second frequency point F is a central frequency point of the S-UMTS cell closest to the first frequency point Fc, then:

F=Fc-W/(2*N)。

furthermore, the first frequency point is a central frequency point of the UMTS cell, the bandwidth of the UMTS cell is averagely divided into N equal parts, and the N equal parts correspond to the telescopic UMTS cells respectively; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information includes N and M; correspondingly, acquiring the second frequency point according to the UARFCN and the difference information includes: acquiring a first frequency point Fc according to UARFCN, and acquiring a second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

For example, fig. 4 is a schematic diagram of a fourth embodiment of the method for acquiring a central frequency point of a cell according to the present invention, as shown in fig. 4, a first frequency point Fc is a central frequency point of a UMTS cell, a bandwidth of the UMTS cell is W, the bandwidth W of the UMTS cell is divided into N equal parts on average, and each equal part corresponds to a scalable UMTS cell. Then, the central frequency point of the mth S-UMTS cell of the N S-UMTS cells, i.e., the second frequency point F, may be obtained through the UARFCN corresponding to the first frequency point Fc, the bandwidth W of the UMTS cell, and N and M.

Specifically, if the terminal device receives UARFCN =3088 corresponding to the first frequency point Fc sent by the base station, the bandwidth W =5MHz of the UMTS cell, and the UMTS cell is divided into 4 equal parts on average. Then, the terminal device may determine the first frequency point Fc =957.6MHz according to UARFCN = 3088; the center frequency point of the 1 st S-UMTS cell, namely the second frequency point F, is:

F=Fc-W/2+W*(2M-1)/2N

=957.6MHz-5MHz/2+5MHz*（2*1-1）/2*4

=953.225MHz。

the cell center frequency point obtaining method provided by the embodiments of fig. 3 and fig. 4 is suitable for obtaining the center frequency point of the S-UMTS cell, and can accurately obtain the center frequency point of the S-UMTS cell.

In the method for acquiring a cell center frequency point provided in this embodiment, a terminal device acquires information of a second frequency point through difference information of a frequency difference between an existing UARFCN corresponding to the first frequency point and the first frequency point by the second frequency point. The delta information may include frequency value, frequency granularity information g and multiple information n, and information of the S-UMTS cell. Therefore, the terminal equipment can acquire the central frequency point of any cell in each frequency band.

The following embodiments describe the cell center frequency point indication method provided by the embodiments of the present invention with a network side device as an execution subject, where the network side device may specifically be a base station to which a terminal device accesses, and the method may include:

and sending a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to the first frequency point and differential information used for indicating the frequency difference between the first frequency point and the second frequency point to the terminal equipment so that the terminal equipment can acquire the second frequency point according to the UARFCN and the differential information, wherein the second frequency point is the central frequency point of the cell.

Specifically, referring to fig. 1B, the second frequency point F is a central frequency point of a cell, and in 3GPP, there is no UARFCN corresponding to the second frequency point F. If the base station needs to indicate the second frequency point F to the terminal device, a first frequency point Fc having the UARFCN may be determined first, difference information Δ of the frequency difference between the first frequency point Fc and the second frequency point F may be determined, and the UARFCN corresponding to the first frequency point Fc and the difference information Δ may be sent to the terminal device.

In the method for indicating a cell center frequency point provided in this embodiment, the network side device indicates the second frequency point to the terminal device through the difference information of the frequency difference between the existing UARFCN corresponding to the first frequency point and the first frequency point, which is apart from the second frequency point, so that the center frequency point of any cell in each frequency band can be indicated to the terminal device.

Further, the difference information is a frequency value or mapping information of the frequency value; correspondingly, sending the UARFCN and the differential information to the terminal device for the terminal device to obtain a second frequency point according to the UARFCN and the differential information, comprising: and sending the UARFCN and the differential information to the terminal equipment so that the terminal equipment can obtain a first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to obtain a second frequency point.

Specifically, referring to fig. 1C, if the second frequency point F =957.7MHz that the base station needs to indicate to the terminal device, and the UARFCN corresponding to the second frequency point F does not exist in the 3GPP, the base station may first determine a first frequency point Fc where the UARFCN exists, where the first frequency point Fc may be a frequency point with a frequency value of 957.6MHz that is closer to the second frequency point F. The base station sends UARFCN corresponding to the first frequency point Fc =957.6MHz, that is, UARFCN =3088, to the terminal device, and also sends mapping information of difference information Δ =0.1MHz or frequency value 0.1MHz of the frequency difference between the first frequency point Fc and the second frequency point F to the terminal device.

The terminal device may determine the first frequency point Fc =957.6MHz according to the UARFCN =3088 corresponding to the received first frequency point Fc. If the mapping information of the frequency value is received, the frequency value of 0.1MHz can be obtained according to the mapping information, and then the second frequency point F = the first frequency point Fc + differential information delta =957.6MHz +0.1MHz =957.7MHz is determined. Preferably, when the absolute value of the difference information Δ is less than 200KHz or the absolute value of the difference information Δ is not an integer multiple of 200KHz, the interval between the first frequency point Fc and the second frequency point F is not an integer multiple of 200 KHz. The value of the difference information Δ can be flexibly selected according to different distances from the first frequency point Fc to the second frequency point F, for example, the difference information Δ can be respectively-0.05 MHz, -0.025MHz, 0.75MHz, or 0.15MHz, and the like.

Further, the difference information includes multiple information n of the frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, sending the UARFCN and the differential information to the terminal device for the terminal device to obtain a second frequency point according to the UARFCN and the differential information, comprising: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain a first frequency point Fc according to the UARFCN and obtain a second frequency point F according to the following formula, wherein F = Fc + g × n.

Specifically, referring to fig. 2, if the second frequency point F =957.7MHz that the base station needs to indicate to the terminal device, and the UARFCN corresponding to the second frequency point F does not exist in the 3GPP, the base station may first determine a first frequency point Fc where the UARFCN exists, where the first frequency point Fc may be a frequency point with a frequency value of 957.6MHz that is closer to the second frequency point F. The base station sends UARFCN corresponding to the first frequency point Fc =957.6MHz, that is, UARFCN =3088, to the terminal device, and simultaneously sends difference information Δ =0.1MHz of the frequency difference between the first frequency point Fc and the second frequency point F to the terminal device through the multiple information n of the frequency granularity information g. Specifically, the frequency granularity information g =0.02MHz may be preset, and when the difference information Δ =0.1MHz needs to be represented by the frequency granularity information g =0.02MHz, the base station should take the multiple information n =5, that is, Δ = g × n, and send the multiple information n =5 to the terminal device.

The frequency granularity information g may be fixedly set in the terminal device, or may be transmitted from the base station to the terminal device. For example, the base station may send the frequency granularity information g to the terminal device through an air interface message, or may send the frequency granularity information g to the terminal device while sending the multiple information n.

The terminal device may determine, according to the UARFCN =3088 corresponding to the received first frequency point Fc, that the first frequency point Fc =957.6MHz, and then determine that the second frequency point F = the first frequency point Fc + the frequency granularity information g × multiple information n =957.6MHz +0.02MHz × 5=957.7 MHz.

In the method for indicating a cell center frequency point provided in this embodiment, the frequency granularity information g may be fixed, and the base station may indicate different second frequency points F to the terminal device by selecting different multiple information n. When the value of the frequency granularity information g is less than 200KHz, the grid of the frequency value of the central frequency point of each cell is less than 200KHz, and the frequency value of the central frequency point of each cell actually takes the frequency granularity information g as the grid. The embodiment of the invention does not limit the value of the frequency granularity information g.

Furthermore, the first frequency point is a central frequency point of the UMTS cell, the bandwidth of the UMTS cell is averagely divided into N equal parts, and the N equal parts correspond to the telescopic UMTS cells respectively; the delta information includes N; correspondingly, sending the UARFCN and the differential information to the terminal device for the terminal device to obtain a second frequency point according to the UARFCN and the differential information, comprising: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire a first frequency point Fc according to the UARFCN and acquire a second frequency point F according to the first frequency point Fc, the first frequency point N and the bandwidth W of the UMTS cell. Specifically, the cell is a scalable UMTS cell with a center frequency point greater than the first frequency point and closest to the first frequency point; correspondingly, sending UARFCN and difference information to the terminal device for the terminal device to obtain a first frequency point Fc according to the UARFCN, and obtain a second frequency point F according to the first frequency point Fc, N and the bandwidth W of the UMTS cell, including: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain a first frequency point Fc according to the UARFCN and obtain a second frequency point F according to the following formula, wherein F = Fc + W/(2 × N).

Specifically, referring to fig. 3, if the second frequency point F that the base station needs to indicate to the terminal device is a central frequency point of the S-UMTS cell, and the S-UMTS cell is the S-UMTS cell in which the UMTS cell with the bandwidth W is divided into N equal parts on average, and the central frequency point of the S-UMTS cell is closest to the central frequency point of the UMTS cell with the bandwidth W, that is, the first frequency point Fc. Then, the base station may indicate the center frequency point of the S-UMTS cell by sending the following parameters to the terminal device: the number N of equally divided cells of UARFCN and UMTS cell bandwidth W, UMTS corresponding to the first frequency point Fc. After the terminal device obtains the parameters, it can know that the second frequency point F = Fc + W/(2 × N).

Specifically, if the second frequency point that the base station needs to indicate to the terminal device is the central frequency point of the S-UMTS cell, and the S-UMTS cell is the S-UMTS cell in which the UMTS cell with the bandwidth of 5MHz is equally divided into 4 equal parts, and the central frequency point of the S-UMTS cell is closest to the central frequency point of the UMTS cell with the bandwidth of 5MHz, that is, the first frequency point Fc =957.6 MHz. Then, the base station may indicate the center frequency point of the S-UMTS cell by sending the following parameters to the terminal device: UARFCN corresponding to the first frequency point Fc =957.6MHz, i.e. UARFCN =3088, the bandwidth W =5MHz of the UMTS cell, and the number of equally divided parts of the UMTS cell N = 4. After the terminal device obtains the parameters, it can know that the second frequency point F = Fc + W/(2 × N) =957.6MHz +5 MHz/(2 × 4) =958.225 MHz. The bandwidth W of the UMTS cell may also be obtained by detection of the terminal device.

F=Fc-W/(2*N)。

furthermore, the first frequency point is a central frequency point of the UMTS cell, the bandwidth of the UMTS cell is averagely divided into N equal parts, and the N equal parts correspond to the telescopic UMTS cells respectively; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information includes N and M; correspondingly, sending the UARFCN and the differential information to the terminal device for the terminal device to obtain a second frequency point according to the UARFCN and the differential information, comprising: sending UARFCN and difference information to terminal equipment to enable the terminal equipment to obtain a first frequency point Fc according to the UARFCN, and obtain a second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

Specifically, referring to fig. 4, if the second frequency point F that the base station needs to indicate to the terminal device is a central frequency point of the S-UMTS cell, and the S-UMTS cell is an mth S-UMTS cell of N S-UMTS cells that are obtained by averagely dividing the UMTS cell with the bandwidth W into N equal parts. Then, the base station may indicate the center frequency point of the S-UMTS cell by sending the following parameters to the terminal equipment: the UARFCN corresponding to the first frequency point Fc, the number N of equally divided cells of the bandwidth W, UMTS of the UMTS cell, and the serial number M of the S-UMTS cell. After the terminal device obtains the parameters, it can know that the second frequency point F = Fc-W/2+ W (2M-1)/2N.

Specifically, if the second frequency point required to be indicated to the terminal device by the base station is the central frequency point of the S-UMTS cell, and the S-UMTS cell is the 1 st S-UMTS cell of 4S-UMTS cells which are obtained by averagely dividing the UMTS cell with the bandwidth of 5MHz into 4 equal parts. Then, the base station may indicate the center frequency point of the S-UMTS cell by sending the following parameters to the terminal equipment: UARFCN corresponding to the first frequency point Fc =957.6MHz, i.e. UARFCN =3088, the bandwidth W =5MHz of the UMTS cell, the number of equally divided parts of the UMTS cell N =4, and the serial number M =1 of the S-UMTS cell. After the terminal device obtains the parameters, it can know that the second frequency point F = Fc-W/2+ W (2M-1)/2N =953.225 MHz. The bandwidth W of the UMTS cell may also be obtained by detection of the terminal device.

In the method for indicating a cell center frequency point provided in this embodiment, a network side device indicates information of a second frequency point to a terminal device through difference information of a frequency difference between an existing UARFCN corresponding to the first frequency point and the first frequency point by the second frequency point. The delta information may include frequency value, frequency granularity information g and multiple information n, and information of the S-UMTS cell. Accordingly, the network side device can indicate the center frequency point of any cell in each frequency band to the terminal device.

Fig. 5 is a flowchart of a fifth embodiment of a method for indicating a center frequency point of a cell according to the present invention, and as shown in fig. 5, the method for indicating a center frequency point of a cell is described in this embodiment by using a network side device as an execution subject. The difference between this embodiment and the above other embodiments is that this embodiment redefines a corresponding UARFCN for a center frequency point of a cell in a 3GPP frequency band, and indicates the cell center frequency point through the redefined UARFCN. The method can comprise the following steps:

s510, acquiring a universal telecommunications radio access UTRA absolute radio frequency point channel number UARFCN corresponding to each central frequency point in a frequency range according to the frequency range and a preset grid, wherein the frequency range is a continuous frequency range taking 0 as a starting point and taking a maximum frequency value as an end point.

The maximum frequency value may be a maximum frequency value included in the existing frequency band, or may be a frequency value greater than the existing frequency band.

S520, sending the target UARFCN corresponding to the central frequency point used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point according to the target UARFCN and the preset grid.

Further, acquiring the UARFCN corresponding to each center frequency point in the frequency range according to the frequency range and the preset grid includes: acquiring the number of central frequency points in the frequency range according to the frequency range and a preset grid, wherein the UARFCN corresponding to each central frequency point is consistent with the serial number of each central frequency point; sending a target UARFCN corresponding to the central frequency point used by the terminal equipment to the terminal equipment so that the terminal equipment can acquire the central frequency point according to the target UARFCN and a preset grid, wherein the method comprises the following steps: and sending a target UARFCN corresponding to the central frequency point F1 used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point F1 according to the following formula, wherein F1= UARFCN.

Specifically, fig. 6 is an exemplary diagram of the embodiment shown in fig. 5, and as shown in fig. 6, assuming that the frequency range currently available in 3GPP includes all frequencies from 0Hz to 4000MHz, the grid may be preset as required, for example, the grid is preset to 50kHz, that is, 0.05 MHz. According to the frequency range of 0Hz to 4000MHz and the preset grid of 0.05MHz, 80001 central frequency points exist in the frequency range of 0Hz to 4000MHz, and the UARFCNs corresponding to the central frequency points can be 0 to 80000 respectively.

If the network side device needs to indicate a center frequency point F1 with a frequency value of 0.5MHz to the terminal device, the UARFCN corresponding to the center frequency point may be sent to the terminal device, where UARFCN = F1/preset grid =0.5MHz/0.05MHz = 10.

After receiving UARFCN =10 corresponding to the central frequency point F1, the terminal device may obtain, according to the preset grid of 0.05MHz, that the central frequency point F1= UARFCN =10 × 0.05MHz =0.5 MHz.

The method for indicating a cell center frequency point provided in this embodiment redefines a corresponding UARFCN for a center frequency point of a cell in a 3GPP frequency band, and indicates the cell center frequency point to a terminal device through the redefined UARFCN. The center frequency point of any cell can be indicated without depending on the existing UARFCN definition mode.

Fig. 7 is a flowchart of a sixth embodiment of a method for acquiring a cell center frequency point according to the present invention, and as shown in fig. 7, this embodiment describes a method for acquiring a cell center frequency point by using a terminal device as an execution subject. The difference between this embodiment and the existing manner of obtaining the center frequency point is that the grid of the UARFCN for defining the center frequency point can be obtained through the first indication, so that the center frequency point is determined according to the UARFCN of the center frequency point and the grid. The method can comprise the following steps:

s710, receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a central frequency point sent by a base station and a first indication, wherein the first indication comprises identification information used for identifying a grid corresponding to the UARFCN.

The base station may send the UARFCN and the first indication to the terminal device through a broadcast or unicast message, where a grid corresponding to the UARFCN is a grid for defining the UARFCN, for example, the grid may be 100KHz, 50KHz, or 10KHz, and then an interval of the corresponding UARFCN is 100KHz, 50KHz, or an integer multiple of 10 KHz. The identification information of the grid is, for example, 0, 1, 2, etc., for identifying different grids.

And S720, acquiring the central frequency point according to the UARFCN and the identification information.

Further, the receiving the UARFCN and the first indication corresponding to the center frequency point sent by the base station includes: and receiving an indication message sent by a base station, wherein the indication message comprises the UARFCN and the first indication.

Specifically, the terminal device may receive the UARFCN and the first indication sent by the base station through an indication message, where the indication message is used to indicate the UARFCN and the first indication. The indication message may be named UARFCN2, UARFCN3, UARFCN4, etc. Taking UARFCN2 as an example, UARFCN2 contains UARFCN and identification information 2 of the grid.

Further, acquiring the center frequency point according to the UARFCN and the identification information includes: acquiring a corresponding grid S according to the identification information; obtaining a central frequency point F2 according to the following formula, wherein F2= UARFCN S + F_OffsetWherein F is_OffsetIs the basic frequency value of the frequency band with the center frequency point F2. That is, the terminal device knows UARFCN and the grid, according to UARFCN = (F2-F)_Offset) and/S, a central frequency point F2 can be determined. When the above calculation is performed, the basic frequency value F of the frequency band where the center frequency point F2 is located_OffsetGrid S and center frequency point F2 are in accordance, e.g., in MHz.

The cell center frequency point obtaining method provided in this embodiment may obtain, through the first indication, a grid for defining the UARFCN, so as to determine the center frequency point according to the grid and the UARFCN of the center frequency point. The embodiment can flexibly adjust the interval of the UARFCN, so that the UARFCN can indicate the central frequency points of more cells.

The embodiment of the invention also provides another cell center frequency point indication method, which takes a base station as an execution main body and can comprise the following steps:

and sending a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN and a first indication corresponding to the central frequency point to the terminal equipment, wherein the first indication comprises identification information used for identifying a grid corresponding to the UARFCN, so that the terminal equipment can acquire the central frequency point according to the UARFCN and the identification information.

Further, sending the UARFCN corresponding to the center frequency point and the first indication to the terminal device includes: and sending an indication message to the terminal equipment, wherein the indication message comprises the UARFCN and the first indication.

Specifically, the base station may send the UARFCN and the first indication to the terminal device at the same time through an indication message, where the indication message is used to indicate the UARFCN and the first indication. The indication message may be named UARFCN2, UARFCN3, UARFCN4, etc. Taking UARFCN2 as an example, UARFCN2 contains UARFCN and identification information 2 of the grid.

Further, sending a UARFCN corresponding to the central frequency point and a first indication to the terminal device, where the first indication includes identification information for identifying a grid corresponding to the UARFCN, so that the terminal device obtains the central frequency point according to the UARFCN and the identification information, including: sending a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN and a first indication corresponding to a central frequency point to a terminal device, wherein the first indication comprises identification information used for identifying a grid corresponding to the UARFCN, so that the terminal device obtains the corresponding grid S according to the identification information, and obtains the central frequency point F2 according to the following formula, wherein F2= UARFCN S + F_OffsetWherein F is_OffsetIs the basic frequency value of the frequency band with the center frequency point F2. When the above calculation is performed, the basic frequency value F of the frequency band where the center frequency point F2 is located_OffsetGrid S and center frequency point F2 are in accordance, e.g., in MHz.

Specific implementation details of this embodiment may refer to the embodiment of the method for acquiring a center frequency point of a cell shown in fig. 7, and are not described herein again.

The cell center frequency point indication method provided in this embodiment may indicate, through the first indication, a grid for defining the UARFCN, so that the terminal device determines the center frequency point according to the grid and the UARFCN of the center frequency point. The embodiment can flexibly adjust the interval of the UARFCN, so that the UARFCN can indicate the central frequency points of more cells.

Fig. 8 is a schematic structural diagram of a first embodiment of a cell center frequency point obtaining apparatus provided in the present invention, and as shown in fig. 8, the cell center frequency point obtaining apparatus 800 provided in this embodiment may be disposed on a terminal device, or may be the terminal device itself, and the center frequency point obtaining apparatus 800 may include:

a receiving module 810, configured to receive a universal telecommunications radio access UTRA absolute radio frequency channel number UARFCN corresponding to a first frequency sent by a base station and differential information indicating a frequency difference between the first frequency and a second frequency; the second frequency point is the central frequency point of the cell;

and the processing module 820 is configured to obtain the second frequency point according to the UARFCN and the difference information.

The cell center frequency point obtaining apparatus 800 provided in this embodiment may be used to implement the technical solution of the method embodiment shown in fig. 1A, and the implementation principle and the technical effect are similar, and are not described herein again.

Optionally, the difference information is a frequency value or mapping information of the frequency value; correspondingly, the processing module 820 is specifically configured to: and acquiring a first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire a second frequency point.

Optionally, the difference information includes multiple information n of the frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, the processing module 820 is specifically configured to: the method comprises the steps of obtaining a first frequency point Fc according to UARFCN, and obtaining a second frequency point F according to the following formula, wherein F = Fc + g × n.

Optionally, the first frequency point is a central frequency point of the UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the delta information includes N; correspondingly, the processing module 820 is specifically configured to: and acquiring a first frequency point Fc according to the UARFCN, and acquiring a second frequency point F according to the first frequency point Fc, the first frequency point N and the bandwidth W of the UMTS cell.

Optionally, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; correspondingly, the processing module 820 is specifically configured to: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

Optionally, the first frequency point is a central frequency point of the UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information includes N and M; correspondingly, the processing module 820 is specifically configured to: acquiring a first frequency point Fc according to UARFCN, and acquiring a second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

The cell center frequency point obtaining apparatus 800 provided in this embodiment may also be configured to execute the technical solutions of the method embodiments shown in fig. 1B to fig. 4, and the implementation principles and technical effects thereof are similar and will not be described herein again.

The cell center frequency point indicating device provided by the embodiment of the invention can comprise:

and the sending module is used for sending a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to the first frequency point and differential information used for indicating the frequency difference between the first frequency point and the second frequency point to the terminal equipment so that the terminal equipment can obtain the second frequency point according to the UARFCN and the differential information, and the second frequency point is a central frequency point of a cell.

Optionally, the difference information is a frequency value or mapping information of the frequency value; correspondingly, the sending module is specifically configured to: and sending the UARFCN and the differential information to the terminal equipment so that the terminal equipment can obtain a first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to obtain a second frequency point.

Optionally, the difference information includes multiple information n of the frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, the sending module is specifically configured to: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain a first frequency point Fc according to the UARFCN and obtain a second frequency point F according to the following formula, wherein F = Fc + g × n.

Optionally, the first frequency point is a central frequency point of the UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the delta information includes N; correspondingly, the sending module is specifically configured to: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire the first frequency point Fc according to the UARFCN and acquire the second frequency point F according to the first frequency point Fc, the first frequency point N and the bandwidth W of the UMTS cell.

Optionally, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; correspondingly, the sending module is specifically configured to: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

Optionally, the first frequency point is a central frequency point of the UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information includes N and M; correspondingly, the sending module is specifically configured to: sending UARFCN and difference information to terminal equipment to enable the terminal equipment to obtain a first frequency point Fc according to the UARFCN, and obtain a second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

The cell center frequency point indicating device provided in this embodiment may be used to implement the technical scheme of the cell center frequency point indicating method embodiment, and the implementation principle and the technical effect thereof are similar, and are not described herein again.

Fig. 9 is a schematic structural diagram of another embodiment of the cell center frequency point indicating device provided in the present invention, as shown in fig. 9, the cell center frequency point indicating device 900 provided in this embodiment may be disposed on a base station, or may be the base station itself, and the cell center frequency point indicating device 900 may include:

an obtaining module 910, configured to obtain, according to a frequency range and a preset grid, a universal telecommunications radio access UTRA absolute radio frequency point channel number UARFCN corresponding to each central frequency point in the frequency range, where the frequency range is a continuous frequency range taking 0 as a starting point and taking a maximum frequency value as an end point;

the sending module 920 is configured to send, to the terminal device, a target UARFCN corresponding to the center frequency point used by the terminal device, so that the terminal device obtains the center frequency point according to the target UARFCN and the preset grid.

Further, the obtaining module 910 is specifically configured to: acquiring the number of central frequency points in the frequency range according to the frequency range and a preset grid, wherein the UARFCN corresponding to each central frequency point is consistent with the serial number of each central frequency point; the sending module 920 is specifically configured to: and sending a target UARFCN corresponding to the central frequency point F1 used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point F1 according to the following formula, wherein F1= UARFCN.

The cell center frequency point indicating apparatus 900 provided in this embodiment may be used to implement the technical solution of the method embodiment shown in fig. 5 or fig. 6, and the implementation principle and the technical effect are similar, and are not described herein again.

Fig. 10 is a schematic structural diagram of a second embodiment of the cell center frequency point obtaining apparatus provided in the present invention, as shown in fig. 10, the cell center frequency point obtaining apparatus 1000 provided in this embodiment may be disposed on a terminal device, or may be the terminal device itself, and the center frequency point obtaining apparatus 1000 may include:

a receiving module 1010, configured to receive a universal telecommunications radio access UTRA absolute radio frequency channel number UARFCN and a first indication, where the UARFCN is a universal telecommunications radio access UTRA absolute radio frequency channel number corresponding to a central frequency point and the first indication includes identification information for identifying a grid corresponding to the UARFCN;

and the processing module 1020 is configured to obtain the center frequency point according to the UARFCN and the identification information.

Optionally, the receiving module 1010 is specifically configured to: and receiving an indication message sent by a base station, wherein the indication message comprises the UARFCN and the first indication.

Optionally, the processing module 1020 is specifically configured to: acquiring a corresponding grid S according to the identification information; obtaining a central frequency point F2 according to the following formula, wherein F2= UARFCN S + F_OffsetWherein F is_OffsetIs the basic frequency value of the frequency band with the center frequency point F2.

The cell center frequency point obtaining apparatus 1000 provided in this embodiment may be used to implement the technical solution of the method embodiment shown in fig. 7, and the implementation principle and the technical effect are similar, which are not described herein again.

Another cell center frequency point indicating device provided by the embodiment of the present invention may include:

the terminal equipment comprises a sending module and a central frequency point obtaining module, wherein the sending module is used for sending a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN and a first indication corresponding to the central frequency point to the terminal equipment, and the first indication comprises identification information used for identifying a grid corresponding to the UARFCN so that the terminal equipment can obtain the central frequency point according to the UARFCN and the identification information.

Optionally, the sending module is specifically configured to: and sending an indication message to the terminal equipment, wherein the indication message comprises the UARFCN and the first indication.

Optionally, the sending module is specifically configured to: sending a UARFCN corresponding to the central frequency point and a first indication to the terminal equipment, wherein the first indication comprises identification information for identifying a grid corresponding to the UARFCN, so that the terminal equipment obtains a corresponding grid S according to the identification information, and obtains the central frequency point F2 according to the following formula, F2= UARFCN S + F_OffsetWherein F is_OffsetIs the basic frequency value of the frequency band with the center frequency point F2.

The cell center frequency point indicating device provided in this embodiment may be used to implement the technical scheme of another embodiment of the cell center frequency point indicating method, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 11 is a schematic structural diagram of a third embodiment of the cell center frequency point obtaining apparatus according to the present invention, as shown in fig. 11, the cell center frequency point obtaining apparatus 1100 provided in this embodiment may be disposed on a terminal device, or may be the terminal device itself, and the cell center frequency point obtaining apparatus 1100 may include at least one receiver 1110, a processor 1120 such as a CPU, a memory 1130, at least one communication bus 1140, and an operating system 1150. The communication bus 1140 is used to enable connection communication between these devices. The memory 1130 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 1130 may optionally include at least one memory device located remotely from the processor 1120. An operating system 1150, containing various programs, is used for implementing various basic services and for processing hardware-based tasks.

A receiver 1110, configured to receive a universal telecommunications radio access UTRA absolute radio frequency channel number UARFCN corresponding to a first frequency sent by a base station and differential information used to indicate a frequency difference between the first frequency and a second frequency; the second frequency point is the central frequency point of the cell;

and the processor 1120 is configured to obtain a second frequency point according to the UARFCN and the difference information.

The cell center frequency point obtaining apparatus 1100 provided in this embodiment may be used to implement the technical solution of the method embodiment shown in fig. 1A, and the implementation principle and the technical effect are similar, which are not described herein again.

Optionally, the difference information is a frequency value or mapping information of the frequency value; accordingly, the processor 1120 is specifically configured to: and acquiring a first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire a second frequency point.

Optionally, the difference information includes multiple information n of the frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; accordingly, the processor 1120 is specifically configured to: the method comprises the steps of obtaining a first frequency point Fc according to UARFCN, and obtaining a second frequency point F according to the following formula, wherein F = Fc + g × n.

Optionally, the first frequency point is a central frequency point of the UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the delta information includes N; accordingly, the processor 1120 is specifically configured to: and acquiring a first frequency point Fc according to the UARFCN, and acquiring a second frequency point F according to the first frequency point Fc, the first frequency point N and the bandwidth W of the UMTS cell.

Optionally, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; accordingly, the processor 1120 is specifically configured to: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

Optionally, the first frequency point is a central frequency point of the UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information includes N and M; accordingly, the processor 1120 is specifically configured to: acquiring a first frequency point Fc according to UARFCN, and acquiring a second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

The cell center frequency point obtaining apparatus 1100 provided in this embodiment may also be used to implement the technical solutions of the method embodiments shown in fig. 1B to fig. 4, and the implementation principles and technical effects thereof are similar and will not be described herein again.

The embodiment of the present invention further provides a cell center frequency point indicating device, which may include:

and the transmitter is used for transmitting a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to the first frequency point and differential information used for indicating the frequency difference between the first frequency point and the second frequency point to the terminal equipment so that the terminal equipment can acquire the second frequency point according to the UARFCN and the differential information, and the second frequency point is a central frequency point of a cell.

Optionally, the difference information is a frequency value or mapping information of the frequency value; accordingly, the transmitter is specifically configured to: and sending the UARFCN and the differential information to the terminal equipment so that the terminal equipment can obtain a first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to obtain a second frequency point.

Optionally, the difference information includes multiple information n of the frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; accordingly, the transmitter is specifically configured to: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain a first frequency point Fc according to the UARFCN and obtain a second frequency point F according to the following formula, wherein F = Fc + g × n.

Optionally, the first frequency point is a central frequency point of the UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the delta information includes N; accordingly, the transmitter is specifically configured to: and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire the first frequency point Fc according to the UARFCN and acquire the second frequency point F according to the first frequency point Fc, the first frequency point N and the bandwidth W of the UMTS cell.

Optionally, the cell is a scalable UMTS cell whose center frequency point is greater than the first frequency point and is closest to the first frequency point; accordingly, the transmitter is specifically configured to: the second frequency bin F, F = Fc + W/(2 × N) is obtained according to the following formula.

Optionally, the first frequency point is a central frequency point of the UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one telescopic UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information includes N and M; accordingly, the transmitter is specifically configured to: sending UARFCN and difference information to terminal equipment to enable the terminal equipment to obtain a first frequency point Fc according to the UARFCN, and obtain a second frequency point F according to the following formula, wherein F = Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

Fig. 12 is a schematic structural diagram of another embodiment of the cell center frequency point indicating device provided in the present invention, as shown in fig. 12, the cell center frequency point indicating device 1200 provided in this embodiment may be disposed on a base station, or may be the base station itself, and the cell center frequency point indicating device 1200 may include at least one processor 1210, for example, a CPU, a transmitter 1220, a memory 1230, at least one communication bus 1240, and an operating system 1250. The communication bus 1240 is used to enable connection communications between these devices. The memory 1230 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. Memory 1230 may optionally include at least one memory device located remotely from the processor 1210. Operating system 1250, which includes various programs for implementing various basic services and for processing hardware-based tasks.

The processor 1210 is configured to obtain, according to a frequency range and a preset grid, a universal telecommunications radio access UTRA absolute radio frequency point channel number UARFCN corresponding to each central frequency point in the frequency range, where the frequency range is a continuous frequency range taking 0 as a starting point and taking a maximum frequency value as an end point;

the transmitter 1220 is configured to send, to the terminal device, a target UARFCN corresponding to the center frequency point used by the terminal device, so that the terminal device obtains the center frequency point according to the target UARFCN and the preset grid.

Further, the processor 1210 is specifically configured to: acquiring the number of central frequency points in the frequency range according to the frequency range and a preset grid, wherein the UARFCN corresponding to each central frequency point is consistent with the serial number of each central frequency point; the transmitter 1220 is specifically configured to: and sending a target UARFCN corresponding to the central frequency point F1 used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point F1 according to the following formula, wherein F1= UARFCN.

The cell center frequency point indication apparatus 1200 provided in this embodiment may be used to implement the technical solution of the method embodiment shown in fig. 5 or fig. 6, and the implementation principle and the technical effect are similar, and are not described herein again.

Fig. 13 is a schematic structural diagram of a fourth embodiment of a cell center frequency point obtaining apparatus according to the present invention, as shown in fig. 13, the cell center frequency point obtaining apparatus 1300 provided in this embodiment may be disposed on a terminal device, or may be the terminal device itself, and the cell center frequency point obtaining apparatus 1300 may include at least one receiver 1310, a processor 1320, for example, a CPU, a memory 1330, at least one communication bus 1340, and an operating system 1350. The communication bus 1340 is used to enable connection communication between these devices. Memory 1330 may comprise high-speed RAM memory and may also include non-volatile memory, such as at least one disk memory. The memory 1330 may optionally include at least one storage device located remotely from the processor 1320. Operating system 1350, which includes various programs for implementing various basic services and for processing hardware-based tasks.

A receiver 1310, configured to receive a universal telecommunications radio access UTRA absolute radio frequency channel number UARFCN and a first indication, where the UARFCN is a channel number corresponding to a central frequency point and the first indication includes identification information for identifying a grid corresponding to the UARFCN;

and the processor 1320 is configured to acquire the center frequency point according to the UARFCN and the identification information.

Optionally, the receiver 1310 is specifically configured to: and receiving an indication message sent by a base station, wherein the indication message comprises the UARFCN and the first indication.

Optionally, the processor 1320 is specifically configured to: acquiring a corresponding grid S according to the identification information; obtaining a central frequency point F2 according to the following formula, wherein F2= UARFCN S + F_OffsetWherein F is_OffsetIs the basic frequency value of the frequency band with the center frequency point F2.

The apparatus 1300 for acquiring a cell center frequency point provided in this embodiment may be used to implement the technical solution of the method embodiment shown in fig. 7, and the implementation principle and the technical effect are similar, which are not described herein again.

and the transmitter is used for transmitting a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN and a first indication corresponding to the central frequency point to the terminal equipment, wherein the first indication comprises identification information used for identifying a grid corresponding to the UARFCN, so that the terminal equipment can acquire the central frequency point according to the UARFCN and the identification information.

Optionally, the transmitter is specifically configured to: and sending an indication message to the terminal equipment, wherein the indication message comprises the UARFCN and the first indication.

Optionally, the transmitter is specifically configured to: sending a UARFCN corresponding to the central frequency point and a first indication to the terminal equipment, wherein the first indication comprises identification information for identifying a grid corresponding to the UARFCN, so that the terminal equipment obtains a corresponding grid S according to the identification information, and obtains the central frequency point F2 according to the following formula, F2= UARFCN S + F_OffsetWherein F is_OffsetIs the basic frequency value of the frequency band with the center frequency point F2.

In summary, in the method and device for acquiring and indicating a cell center frequency point provided in the embodiments of the present invention, the cell center frequency point indicating device indicates information of a second frequency point to the cell center frequency point acquiring device through difference information of a frequency difference between an existing UARFCN corresponding to the first frequency point and the first frequency point, which is a distance between the existing UARFCN and the first frequency point. The delta information may include frequency value, frequency granularity information g and multiple information n, and information of the S-UMTS cell. Accordingly, the center frequency point of any cell in each frequency band can be indicated.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiment, which is not described herein again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for acquiring a cell center frequency point is characterized by comprising the following steps:

receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point and differential information used for indicating the frequency difference between the first frequency point and a second frequency point, wherein the UARFCN is sent by a base station; the second frequency point is an actual central frequency point of the cell;

acquiring the second frequency point according to the UARFCN and the differential information;

wherein an absolute value of a frequency difference between the first frequency point and the second frequency point is less than 200 kHz.

2. The method of claim 1, wherein the delta information is a frequency value or mapping information of frequency values; correspondingly, acquiring the second frequency point according to the UARFCN and the differential information includes:

and acquiring the first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire the second frequency point.

3. The method according to claim 1, wherein the difference information comprises multiple information n of frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts;

correspondingly, acquiring the second frequency point according to the UARFCN and the differential information includes:

and acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the following formula, wherein F is Fc + g n.

4. The method of claim 1, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to a scalable UMTS cell; the cell is the scalable UMTS cell; the delta information comprises the N;

and acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the first frequency point Fc, the N and the bandwidth W of the UMTS cell.

5. The method of claim 4, wherein the cell is a scalable UMTS cell having a center frequency greater than and closest to the first frequency;

correspondingly, acquiring the second frequency point F according to the first frequency point Fc, the N, and the bandwidth W of the UMTS cell includes:

the second frequency point F is obtained according to the following formula, where F is Fc + W/(2 × N).

6. The method of claim 1, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to a scalable UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M;

acquiring the first frequency point Fc according to the UARFCN, and acquiring the second frequency point F according to the following formula, wherein F is Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

7. A method for indicating a cell center frequency point is characterized by comprising the following steps:

sending a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point and differential information used for indicating the frequency difference between the first frequency point and a second frequency point to a terminal device, so that the terminal device can obtain the second frequency point according to the UARFCN and the differential information, wherein the second frequency point is an actual central frequency point of a cell;

8. The method of claim 7, wherein the delta information is a frequency value or mapping information of frequency values;

correspondingly, the sending the UARFCN and the difference information to the terminal device for the terminal device to obtain the second frequency point according to the UARFCN and the difference information includes:

and sending the UARFCN and the differential information to the terminal equipment so that the terminal equipment can acquire the first frequency point according to the UARFCN, and summing the first frequency point and the frequency value to acquire the second frequency point.

9. The method according to claim 7, wherein the difference information comprises multiple information n of frequency granularity information g, and if the first frequency point is smaller than the second frequency point, the multiple information is a positive integer; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts;

and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire the first frequency point Fc according to the UARFCN and acquire the second frequency point F according to the following formula, wherein F is Fc + g n.

10. The method of claim 7, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to a scalable UMTS cell; the cell is the scalable UMTS cell; the delta information comprises the N;

and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire the first frequency point Fc according to the UARFCN and acquire the second frequency point F according to the first frequency point Fc, the N and the bandwidth W of the UMTS cell.

11. The method of claim 10, wherein the cell is a scalable UMTS cell having a center frequency point greater than and closest to the first frequency point;

correspondingly, the sending the UARFCN and the difference information to the terminal device for the terminal device to obtain the first frequency point Fc according to the UARFCN and obtain the second frequency point F according to the first frequency point Fc, the N, and the bandwidth W of the UMTS cell includes:

and sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can acquire the first frequency point Fc according to the UARFCN and acquire the second frequency point F according to the following formula, wherein F is Fc + W/(2N).

12. The method of claim 7, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to a scalable UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M;

sending the UARFCN and the difference information to the terminal equipment so that the terminal equipment can obtain the first frequency point Fc according to the UARFCN and obtain the second frequency point F according to the following formula, wherein F is Fc-W/2+ W (2M-1)/2N; wherein W is the bandwidth of the UMTS cell.

13. A method for indicating a cell center frequency point is characterized by comprising the following steps:

acquiring a universal telecommunications radio access UTRA absolute radio frequency point channel number UARFCN corresponding to each central frequency point in the frequency range according to the frequency range and a preset grid, wherein the frequency range is a continuous frequency range taking 0 as a starting point and taking a maximum frequency value as an end point;

sending a target UARFCN corresponding to a central frequency point used by the terminal equipment to the terminal equipment, so that the terminal equipment can acquire the central frequency point according to the target UARFCN and the preset grid;

the preset grid comprises 100KHz, 50KHz or 10 KHz.

14. The method of claim 13,

the obtaining of the UARFCN corresponding to each center frequency point in the frequency range according to the frequency range and the preset grid includes:

acquiring the number of central frequency points in the frequency range according to the frequency range and the preset grid, wherein the UARFCN corresponding to each central frequency point is consistent with the serial number of each central frequency point;

the sending, to a terminal device, a target UARFCN corresponding to a center frequency point used by the terminal device, so that the terminal device obtains the center frequency point according to the target UARFCN and the preset grid, includes:

and sending a target UARFCN corresponding to a central frequency point F1 used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point F1 according to the following formula, wherein F1 is UARFCN and is a preset grid.

15. A cell center frequency point acquisition device is characterized by comprising:

the receiving module is used for receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point sent by a base station and differential quantity information used for indicating the frequency difference between the first frequency point and a second frequency point; the second frequency point is an actual central frequency point of the cell;

the processing module is used for acquiring the second frequency point according to the UARFCN and the differential information;

16. The apparatus of claim 15, wherein the delta information is a frequency value or mapping information of frequency values; correspondingly, the processing module is specifically configured to:

17. The apparatus according to claim 15, wherein the difference information comprises multiple information n of frequency granularity information g, and the multiple information is a positive integer if the first frequency point is smaller than the second frequency point; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, the processing module is specifically configured to:

18. The apparatus of claim 15, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the delta information comprises the N; correspondingly, the processing module is specifically configured to:

19. The apparatus of claim 18, wherein the cell is a scalable UMTS cell having a center frequency point greater than and closest to the first frequency point;

correspondingly, the processing module is specifically configured to:

20. The apparatus of claim 15, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; correspondingly, the processing module is specifically configured to:

21. A cell center frequency point indicating device is characterized by comprising:

a sending module, configured to send, to a terminal device, a universal telecommunications radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point and difference amount information used to indicate a frequency difference between the first frequency point and a second frequency point, so that the terminal device obtains the second frequency point according to the UARFCN and the difference amount information, where the second frequency point is an actual central frequency point of a cell;

22. The apparatus of claim 21, wherein the delta information is a frequency value or mapping information of frequency values; correspondingly, the sending module is specifically configured to:

23. The apparatus according to claim 21, wherein the difference information comprises multiple information n of frequency granularity information g, and the multiple information is a positive integer if the first frequency point is smaller than the second frequency point; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; correspondingly, the sending module is specifically configured to:

24. The apparatus of claim 23, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the delta information comprises the N; correspondingly, the sending module is specifically configured to:

25. The apparatus of claim 24, wherein the cell is a scalable UMTS cell having a center frequency point greater than and closest to the first frequency point;

correspondingly, the sending module is specifically configured to:

26. The apparatus of claim 21, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; correspondingly, the sending module is specifically configured to:

27. A cell center frequency point indicating device is characterized by comprising:

the acquisition module is used for acquiring a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to each central frequency point in a frequency range according to the frequency range and a preset grid, wherein the frequency range is a continuous frequency range taking 0 as a starting point and taking a maximum frequency value as a terminal point;

the sending module is used for sending a target UARFCN corresponding to the central frequency point used by the terminal equipment to the terminal equipment so that the terminal equipment can obtain the central frequency point according to the target UARFCN and the preset grid;

the preset grid comprises 100KHz, 50KHz or 10 KHz.

28. The apparatus of claim 27,

the acquisition module is specifically configured to: acquiring the number of central frequency points in the frequency range according to the frequency range and the preset grid, wherein the UARFCN corresponding to each central frequency point is consistent with the serial number of each central frequency point;

the sending module is specifically configured to: and sending a target UARFCN corresponding to a central frequency point F1 used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point F1 according to the following formula, wherein F1 is UARFCN and is a preset grid.

29. A cell center frequency point acquisition device is characterized by comprising:

the system comprises a receiver and a base station, wherein the receiver is used for receiving a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point sent by the base station and differential quantity information used for indicating the frequency difference between the first frequency point and a second frequency point; the second frequency point is an actual central frequency point of the cell;

the processor is used for acquiring the second frequency point according to the UARFCN and the differential information;

30. The apparatus of claim 29, wherein the delta information is a frequency value or mapping information of frequency values; accordingly, the processor is specifically configured to:

31. The apparatus according to claim 29, wherein the difference information comprises multiple information n of frequency granularity information g, and the multiple information is a positive integer if the first frequency point is smaller than the second frequency point; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; accordingly, the processor is specifically configured to:

32. The apparatus of claim 29, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the delta information comprises the N; accordingly, the processor is specifically configured to:

33. The apparatus of claim 32, wherein the cell is a scalable UMTS cell having a center frequency point greater than and closest to the first frequency point;

accordingly, the processor is specifically configured to:

34. The apparatus of claim 29, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; accordingly, the processor is specifically configured to:

35. A cell center frequency point indicating device is characterized by comprising:

the transmitter is used for transmitting a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to a first frequency point and differential information used for indicating the frequency difference between the first frequency point and a second frequency point to terminal equipment so that the terminal equipment can acquire the second frequency point according to the UARFCN and the differential information, wherein the second frequency point is an actual central frequency point of a cell;

36. The apparatus of claim 35, wherein the delta information is a frequency value or mapping information of frequency values; accordingly, the transmitter is specifically configured to:

37. The apparatus of claim 35, wherein the difference information comprises multiple information n of frequency granularity information g, and the multiple information is a positive integer if the first frequency point is smaller than the second frequency point; if the first frequency point is larger than the second frequency point, the multiple information is a negative integer; the frequency granularity information is the absolute value of the frequency difference of each part after the bandwidth is averagely divided into a plurality of parts; accordingly, the transmitter is specifically configured to:

38. The apparatus of claim 35, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the delta information comprises the N; accordingly, the transmitter is specifically configured to:

39. The apparatus of claim 38 wherein the cell is a scalable UMTS cell having a center frequency greater than and closest to the first frequency;

accordingly, the transmitter is specifically configured to:

40. The apparatus of claim 35, wherein the first frequency point is a central frequency point of a UMTS cell, and the bandwidth of the UMTS cell is divided into N equal parts on average and corresponds to one scalable UMTS cell; the cell is the Mth telescopic UMTS cell, wherein M is more than 0 and less than or equal to N; the delta information comprises the N and M; accordingly, the transmitter is specifically configured to:

41. A cell center frequency point indicating device is characterized by comprising:

the processor is used for acquiring a universal telecommunication radio access UTRA absolute radio frequency point channel number UARFCN corresponding to each central frequency point in the frequency range according to the frequency range and a preset grid, wherein the frequency range is a continuous frequency range taking 0 as a starting point and taking a maximum frequency value as a terminal point;

the transmitter is used for transmitting a target UARFCN corresponding to the central frequency point used by the terminal equipment to the terminal equipment so that the terminal equipment can acquire the central frequency point according to the target UARFCN and the preset grid;

the preset grid comprises 100KHz, 50KHz or 10 KHz.

42. The apparatus of claim 41,

the processor is specifically configured to: acquiring the number of central frequency points in the frequency range according to the frequency range and the preset grid, wherein the UARFCN corresponding to each central frequency point is consistent with the serial number of each central frequency point;

the transmitter is specifically configured to: and sending a target UARFCN corresponding to a central frequency point F1 used by the terminal equipment to the terminal equipment, so that the terminal equipment can obtain the central frequency point F1 according to the following formula, wherein F1 is UARFCN and is a preset grid.