WO2017004988A1

WO2017004988A1 - Method and device for determining radio remote unit, and storage medium

Info

Publication number: WO2017004988A1
Application number: PCT/CN2016/073474
Authority: WO
Inventors: 张新
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-07-07
Filing date: 2016-02-04
Publication date: 2017-01-12
Also published as: CN106341871A

Abstract

Disclosed is a method for determining a radio remote unit. The method comprises: during uplink time slot, shifting data output by all radio remote units to obtain shifted data corresponding to all the radio remote units, all the radio remote units being connected to a first user equipment; merging all the shifted data to generate merged data; sending the merged data to a baseband processing unit, and performing time offset estimation on the merged data by the baseband processing unit to obtain a time offset estimation value; and determining the radio remote unit with maximum signal strength from all the radio remote units to be a target radio remote unit according to the time offset estimation value. Also disclosed are a device for determining a radio remote unit, and a storage medium.

Description

Method and device for determining radio remote unit and storage medium

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and device for determining a radio remote unit, and a storage medium.

Background technique

In an existing wireless communication system, a base station (eNB) of an access network is usually composed of an indoor baseband processing unit (BBU) and a radio remote unit (RRU), a baseband processing unit and a radio frequency. The remote units are connected by optical fibers or cables, and the data is exchanged by using a common public radio interface (CPRI) or an open radio interface (ORI). In a communication system, a distributed antenna needs to be applied, for example, in a cell (CELL), a baseband processing unit is required to implement data transmission between a base station and a user equipment (UE) through multiple radio remote units, each radio pull The far unit achieves different extensions of the coverage of the cell.

For Long Term Evolution (LTE) and Advanced Long Term Evolution (LTE-Advanced) systems, the uplink uses single carrier frequency division multiple access (SC-FDMA) with cyclic prefix (CP); there are 14 subframes per normal CP. The symbols, the 4th and 11th symbols are Pilot symbols; each sub-frame has 12 symbols under the extended CP, and the 3rd and 10th symbols are pilot symbols. The Physical Uplink Shared CHannel (PUSCH) is an uplink data link used to complete uplink data service transmission from the UE to the eNB.

In the prior art, for a PUSCH of a baseband processing unit and a plurality of radio remote units, the antenna data received by the plurality of radio remote units is directly combined and sent to the baseband processing unit for demodulation; The transmission bandwidth between the remote unit and the baseband processing unit. However, since the prior art directly combines the data output from each radio remote unit, The baseband processing unit cannot distinguish which of the RF remote units has the strongest signal.

The above content is only used to assist in understanding the technical solutions of the present invention, and does not constitute an admission that the above is prior art.

Summary of the invention

The main purpose of the embodiments of the present invention is to provide a method and a device for determining a radio remote unit, and a storage medium. In the prior art, one of the plurality of radio remote units connected to the first user equipment cannot be selected. The most powerful RF remote unit.

To achieve the above objective, the technical solution of the embodiment of the present invention is as follows:

In a first aspect, an embodiment of the present invention provides a method for determining a radio remote unit, where the method includes:

Performing a shift operation on the data outputted by each radio remote unit in the uplink time slot, and obtaining the shifted data corresponding to each radio remote unit, wherein each radio remote unit is connected to the first user equipment;

Combining all the shifted data to generate combined data; and transmitting the combined data to the baseband processing unit, where the baseband processing unit performs time-bias estimation on the combined data to obtain a time-offset estimation value;

The baseband processing unit performs time-bias estimation on the combined data to obtain a time-biased estimation value;

And determining, according to the time-offset estimation value, a radio remote unit that has the highest signal strength from each radio remote unit as a target radio remote unit.

In an embodiment of the present invention, before the step of performing a shift operation on the data outputted by each radio remote unit in the uplink time slot to obtain the shifted data corresponding to each radio remote unit, the method The method further includes: assigning a shift factor to each of the radio remote units;

The step of performing a shift operation on the data output by each radio remote unit in the uplink time slot to obtain the shifted data corresponding to each radio remote unit includes:

In the uplink time slot, respectively according to the shift factor assigned to each radio remote unit The data outputted by the frequency remote unit is subjected to a shift operation, and the shifted data corresponding to each radio remote unit is obtained.

In an embodiment of the present invention, in the uplink time slot, the data output by each radio remote unit is shifted according to the shift factor allocated by each radio remote unit, and each radio remote unit is obtained. Steps corresponding to the shifted data:

In the uplink time slot, the pilot symbol data in the data output by each radio remote unit is shifted according to the shift factor allocated by each radio remote unit, and the shifted corresponding to each radio remote unit is obtained. data.

In an embodiment of the present invention, the step of determining, by using the time-offset estimation value, the radio-radiation unit that has the highest signal strength from each radio remote unit as the target radio-radiation unit comprises:

Obtaining a time offset range value corresponding to each radio remote unit;

And determining, according to the time offset range value of the time offset estimation value, the radio remote unit corresponding to the falling time offset range value as the target radio remote unit.

In an embodiment of the present invention, the step of respectively assigning a shift factor to each radio remote unit is:

The respective radio remote units are sequentially numbered, and each radio remote unit is assigned a number;

A shift factor is assigned to each radio remote unit according to the number of each radio remote unit.

In a second aspect, the embodiment of the present invention further provides a determining device for a radio remote unit, the device comprising:

The shifting module is configured to perform a shift operation on the data outputted by each radio remote unit in the uplink time slot, and obtain the shifted data corresponding to each radio remote unit, wherein each radio remote unit and the first user Device connection

The merging module is configured to combine all the shifted data to generate combined data, and send the combined data to the baseband processing unit, where the baseband processing unit performs time-bias estimation on the combined data to obtain Time-biased estimate;

And a determining module, configured to determine, according to the time offset estimation value, a remote radio unit that has the highest signal strength from each radio remote unit as the target radio remote unit.

In an embodiment of the present invention, the device further includes an allocating module configured to respectively allocate a shift factor for each radio remote unit;

The shifting module is further configured to perform a shift operation on the data output by each radio remote unit according to the shift factor assigned by each radio remote unit in the uplink time slot, to obtain a shift corresponding to each radio remote unit The data after the bit.

In an embodiment of the invention, the shifting module comprises:

The shifting unit is configured to perform shifting operation on the pilot symbol data in the data output by each radio remote unit according to the shift factor allocated by each radio remote unit in the uplink time slot, to obtain each radio remote unit Corresponding shifted data.

In an embodiment of the invention, the determining module comprises:

Obtaining a unit, configured to obtain a time offset range value corresponding to each radio remote unit;

The determining unit is configured to determine, according to the time offset range value that the time offset estimation value falls, the radio remote unit that corresponds to the falling time offset range value as the target radio remote unit.

In an embodiment of the invention, the allocating module comprises:

The first allocating unit is configured to sequentially number the respective radio remote units, and assign a number to each radio remote unit;

The second allocating unit is configured to allocate a shift factor to each radio remote unit according to the number of each radio remote unit.

In a third aspect, an embodiment of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, where the computer executable instructions are used to execute the present invention. A method for determining a radio remote unit provided by an embodiment.

The method and device for determining the radio remote unit of the embodiment of the present invention, and the storage medium, by shifting the data outputted by each radio remote unit in the uplink time slot, and obtaining the shifted corresponding to each radio remote unit Data, the respective radio remote units are connected to the first user equipment; all the shifted data are combined to generate combined data; and the combined data is sent to the baseband processing unit for baseband processing unit to merge After the data is subjected to time-bias estimation, a time-biased estimation value is obtained; according to the time-offset estimation value, the remote-radio-radio unit with the largest signal strength is determined from each radio remote unit as the target radio remote unit; that is, each radio frequency is pulled Before the data outputted by the remote unit is sent to the baseband processing unit, the data outputted by each of the remote radio unit is first shifted, so that the data output by each radio remote unit has its own characteristics; and each radio after the shift operation is pulled. The data output from the far unit is combined, and the baseband processing unit performs time-bias estimation on the combined data to obtain a time-bias estimation. According to the time-offset estimation value, the radio-radiation unit with the highest intensity is determined as the target radio-radiation unit, that is, the radio-radio unit with the strongest signal can be selected from the plurality of radio-radio units connected to the first user equipment. The unit acts as a target radio remote unit.

DRAWINGS

1 is a schematic flow chart of a first embodiment of a method for determining a radio remote unit according to the present invention;

2 is a schematic flow chart of a second embodiment of a method for determining a radio remote unit according to the present invention;

3 is a schematic structural view of a first embodiment of a determining device for a radio remote unit according to the present invention;

4 is a schematic structural view of a second embodiment of a determining device for a radio remote unit according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of the present invention. It is not intended to limit the scope of the invention.

1 is a schematic flowchart of a first embodiment of a method for determining a radio remote unit according to the present invention. The method includes:

S10, in the uplink time slot, perform a shift operation on the data output by each radio remote unit, and obtain the shifted data corresponding to each radio remote unit, and the respective radio remote units are connected to the first user equipment.

The radio remote unit is a radio remote unit capable of receiving an uplink signal of the first user equipment. The respective radio remote unit establishes a communication connection with the first user equipment.

The radio remote unit receives the uplink signal sent by the first user equipment, and performs related processing on the received uplink signal to output data. For example, each radio remote unit samples the received uplink time domain baseband signal to obtain a sampled signal sequence, and uses the obtained signal sequence as output data.

In this step, the data outputted by each radio remote unit is separately subjected to a shift operation, and the shifted data corresponding to each radio remote unit is obtained.

The data output by each of the radio remote units includes pilot symbol data and non-pilot symbol data. In this step, the pilot symbol data in the data output by each radio remote unit is shifted, and each radio frequency is pulled. The non-pilot symbol data in the data output from the far unit is not subjected to the shift operation, and the order of the non-pilot symbol data in the data of the output in each radio remote unit is kept unchanged. That is, the shifted data corresponding to the respective radio remote units includes the pilot symbol data after shifting and the non-pilot symbol data that is not shifted.

In this embodiment, the total number of radio remote units is M.

S20: Combine all the shifted data to generate combined data, and send the combined data to a baseband processing unit, where the baseband processing unit performs time-bias estimation on the combined data to obtain a time-offset estimation value. .

In the step, all the shifted data are combined to generate the combined data, The subsequent data is written as Y(k), then Y(k)=[X(0,k)+X(1,k)+...+X(i,k)+.... ..+X(M-1,k)]/M, where K represents the Kth sampling point, i represents the number of the remote unit, M is an integer, M represents the number of remote units, X(i, k) represents the kth sample point data of the remote unit of the radio number i; if Y(k) is not an integer, the Y(k) will need to be rounded, preferably by rounding off whole.

The baseband processing unit performs time-bias estimation on the combined data, and performs time-bias estimation according to the prior art. For example, the method performs time-offset estimation based on the pilot signal, because the pilot signal is known by the base station, and the received signal is used. The pilot signal is compared with the known pilot signal to estimate the time offset of the first user equipment sending signal to the base station; the other way is: adopting a closed-loop time offset estimation method, which is to first receive the signal. Demodulation is performed, and the original signal sent by the first user equipment is restored according to the demodulation result, and then compared with the signal received by the base station to obtain a time offset estimation result.

S30. Determine, according to the time offset estimation value, a radio remote unit that has the highest signal strength from each radio remote unit as a target radio remote unit.

In this step, the target radio remote unit is determined according to the time offset estimation value, and the target radio remote unit is the radio remote unit with the highest signal strength relative to the first user equipment, and can be extended by the determined target radio frequency. The unit communicates with the first user equipment, such as sending downlink data to the first user equipment by using the target radio remote unit, and receiving uplink data from the first user equipment by using the target radio remote unit; The remote radio unit is configured to know the location of the first user equipment, and the target radio remote unit has a specific signal coverage range. When the target radio remote unit is the radio remote unit with the highest signal strength of the first user equipment, The first user equipment is in the coverage of the target radio remote unit.

In an embodiment, the step of determining, according to the time offset estimation value, the radio remote unit that has the highest signal strength from each radio remote unit is the target radio remote unit comprises: acquiring a time offset range corresponding to each radio remote unit And determining, according to the time offset range value of the time offset estimation value, the radio remote unit corresponding to the falling time offset range value as the target radio remote unit. For example, the time offset range value of the first remote radio unit is (TA ₁₁ , TA ₁₂ ], the time offset range value of the second remote radio unit is (TA ₂₁ , TA ₂₂ ], and the time of the third radio remote unit The offset range value is (TA ₃₁ , TA ₃₂ ], ..., the time offset range value of the i-th radio remote unit is (TA _i1 , TA _i2 ] ..., the Mth radio frequency The time offset range value of the remote unit is (TA _M1 , TA _M2 ). If the time offset estimate falls within the time offset range (TA ₃₁ , TA ₃₂ ], it can be determined that the third RF remote unit is the target RF remote. The time offset range value of each radio remote unit can be calculated according to the offset factor of each radio remote unit; when the unit of the estimated value is Ts (1Ts=1/30720ms), the time of each radio remote unit The offset range value (TA _i1 , TA _i2 ) may be (F(i)-1024/M, F(i)+1024/M], where F(i) represents the shift factor of the radio remote unit with the number i M indicates the number of radio remote units. When i is 1, F(i) indicates the shift factor of the first radio remote unit. When i is 2, F(i) indicates the second radio pull. The shift factor of the far unit, and so on, when i is M, Then F(i) represents the shift factor of the Mth radio remote unit.

According to the above embodiment, by shifting the data outputted by each radio remote unit in the uplink time slot, the shifted data corresponding to each radio remote unit is obtained; all the shifted data are combined to generate The combined data is sent to the baseband processing unit, and the baseband processing unit performs time-bias estimation on the combined data to obtain a time-offset estimation value; and the remote-radio unit is extracted from each radio frequency according to the time-offset estimation value. The radio remote unit that determines the maximum signal strength is the target radio remote unit; that is, before the data output from each radio remote unit is sent to the baseband processing unit, the data outputted by each radio remote unit is shifted. The data outputted by each radio remote unit has characteristics; and the data output by each radio remote unit after the shift operation is combined, and the baseband processing unit performs time-bias estimation on the combined data to obtain a time offset estimation value. Then, according to the estimated value of the time offset, the RF remote unit with the highest intensity is determined as the target radio remote unit, that is, He said unit can be used as a target radio remote unit from a selected strongest radio signal with the first plurality of remote user devices connected radio remote unit.

Further, as shown in FIG. 2, before the step S10, the method further includes: S40, respectively assigning a shift factor to each radio remote unit;

Step S10 includes: S11, in the uplink time slot, respectively, shifting data outputted by each radio remote unit according to a shift factor allocated by each radio remote unit, and obtaining shifted corresponding to each radio remote unit data.

In step S40, a shift factor is allocated for each radio remote unit, the shift factors of each radio remote unit are different, the shift factor is represented by F(i), and i represents the radio frequency drawing unit radio remote unit Number, the shift factor F(i) is an integer. In an embodiment, the step of assigning a shift factor to each radio remote unit is: sequentially numbering each radio remote unit, and assigning a number to each radio remote unit; The far unit number is assigned a shift factor for each radio remote unit. For example, each of the radio remote units is assigned numbers 1, 2, 3, 4, ..., i, ..., M, where number 1 indicates the first radio remote unit, and number i indicates The i-th radio remote unit, the number M represents the Mth radio remote unit, and a shift factor is assigned to each radio remote unit according to the number of each radio remote unit, which can be used for each radio remote unit by the following formula Assign a shift factor, F(i)=N*i/M+Q, where N is the FFT (Fast Fourier Transformation) point corresponding to the system bandwidth, and L is the pilot symbol CP (Cyclic Prefix). The number of points, M is the number of remote units of the radio, Q is a constant, usually, Q can be set to 0; if the calculated F(i) is a decimal, then F(i) needs to be rounded, if Rounding is performed in a rounded manner; a shift factor can also be assigned to each remote radio unit by the following formula, F(i)=N*i/H+Q, where N is the number of FFT points corresponding to the system bandwidth, L is the guide pilot symbol points CP, H is ^{2 j (1 <= j <} = M, M is the number of remote radio units), j values as small as possible, but must The obtained 2 ^j> M, Q is a constant, generally, the Q may be set to zero.

In step S11, the data output by each radio remote unit is shifted according to the shift factor assigned by each radio remote unit, and the shift required is determined according to the shift factor. Then, the data output from the remote radio unit is shifted forward from the back to the front. In an embodiment, in the uplink time slot, the data output by each radio remote unit is shifted according to the shift factor assigned by each radio remote unit, and the shift corresponding to each radio remote unit is obtained. The step of data is: in the uplink time slot, respectively, the pilot symbol data in the data output by each radio remote unit is shifted according to the shift factor assigned by each radio remote unit, and each radio remote unit is obtained. Corresponding shifted data. For a pilot symbol data, denoted as D=[d(0), d(1), ..., d(N+L-1)], and the shift factor is F(i), then shift The pilot symbol data after bit operation is denoted as D1=[d(N+LF(i)), d(N+LF(i)+1), ..., d(N+L-1) ), d(0), d(1), ..., d(N+L-1-F(i))].

Referring to FIG. 3, FIG. 3 is a schematic structural diagram of a first embodiment of a determining apparatus for a radio remote unit according to the present invention. The apparatus includes:

The shifting module 10 is configured to perform a shift operation on the data output by each radio remote unit in the uplink time slot, and obtain the shifted data corresponding to each radio remote unit, and the radio remote unit and the first user Device connection

The merging module 20 is configured to combine all the shifted data to generate combined data, and send the combined data to the baseband processing unit, so that the baseband processing unit performs time-bias estimation on the combined data. Partial estimate

The determining module 30 is configured to determine, according to the time offset estimation value, a radio remote unit that has the highest signal strength from each radio remote unit as the target radio remote unit.

The radio remote unit is a radio remote unit capable of receiving an uplink signal of the first user equipment. The respective radio remote units establish a communication connection with the first user equipment. The total number of the remote radio units is M.

The radio remote unit receives the uplink signal sent by the first user equipment, and performs related processing on the received uplink signal to output data. For example, each radio remote unit samples the received uplink time domain baseband signal to obtain a sampled signal sequence, and uses the obtained signal sequence as an input. Out of the data.

The shifting module 10 performs a shift operation on the data outputted by each of the remote radio unit, and obtains the shifted data corresponding to each radio remote unit.

The data output by each of the remote radio unit includes pilot symbol data and non-pilot symbol data, and the shifting module 10 performs a shift operation on the pilot symbol data in the data output by each radio remote unit, and pulls each radio frequency The non-pilot symbol data in the data output from the far unit is not subjected to the shift operation, and the order of the non-pilot symbol data in the data of the output in each radio remote unit is kept unchanged. That is, the shifted data corresponding to the respective radio remote units includes the pilot symbol data after shifting and the non-pilot symbol data that is not shifted.

The merging module 20 combines all the shifted data to generate combined data, and the combined data is recorded as Y(k), then Y(k)=[X(0,k)+X(1,k ) +...+X(i,k)+...+X(M-1,k)]/M, where K represents the Kth sample point and i represents the RF remote unit Number, M is an integer, M represents the number of radio remote units, X(i,k) represents the kth sample point data of the radio remote unit numbered i; if Y(k) is not an integer, then The Y(k) needs to be rounded, preferably rounded off.

The baseband processing unit performs time-bias estimation on the combined data, and performs time-bias estimation according to the prior art. For example, the method performs time-offset estimation based on the pilot signal, because the pilot signal is known by the base station, and the received signal is used. The pilot signal is compared with the known pilot signal to estimate the time offset of the first user equipment sending signal to the base station; the other way is: adopting a closed-loop time offset estimation method, which is to first receive the signal. Demodulation is performed, and the original signal sent by the first user equipment is restored according to the demodulation result, and then compared with the signal received by the base station to obtain a time offset estimation result. The baseband processing unit returns the resulting time offset estimate to the determination module 30.

The determining module 30 determines a target radio remote unit according to the time offset estimation value, where the target radio remote unit is the radio remote unit with the highest signal strength relative to the first user equipment, and the determined target radio remote unit Communicating with the first user equipment, such as by the target The frequency remote unit sends the downlink data to the first user equipment, and receives the uplink data from the first user equipment by using the target radio remote unit; and the target remote radio unit can also learn that the first user equipment is located. The target remote radio unit has a specific signal coverage range. When the target radio remote unit is the radio remote unit with the highest signal strength of the first user equipment, the first user equipment is in the target radio remote unit. Coverage.

In an embodiment, the determining module includes: an acquiring unit configured to acquire a time offset range value corresponding to each radio remote unit; and a determining unit configured to: according to the time offset range value of the time offset estimated value, The radio remote unit corresponding to the falling time range value is determined as the target radio remote unit. For example, the time offset range value of the first remote radio unit is (TA ₁₁ , TA ₁₂ ], the time offset range value of the second remote radio unit is (TA ₂₁ , TA ₂₂ ], and the time of the third radio remote unit The offset range value is (TA ₃₁ , TA ₃₂ ], ..., the time offset range value of the i-th radio remote unit is (TA _i1 , TA _i2 ] ..., the Mth radio frequency The time offset range value of the remote unit is (TA _M1 , TA _M2 ). If the time offset estimate falls within the time offset range (TA ₃₁ , TA ₃₂ ], it can be determined that the third RF remote unit is the target RF remote. The time offset range value of each radio remote unit can be calculated according to the offset factor of each radio remote unit; when the unit of the estimated value is Ts (1Ts=1/30720ms), the time of each radio remote unit The offset range value (TA _i1 , TA _i2 ) may be (F(i)-1024/M, F(i)+1024/M], where F(i) represents the shift factor of the radio remote unit with the number i M indicates the number of radio remote units. When i is 1, F(i) indicates the shift factor of the first radio remote unit. When i is 2, F(i) indicates the second radio pull. The shift factor of the far unit, and so on, when i is M, Then F(i) represents the shift factor of the Mth radio remote unit.

Further, as shown in FIG. 4, the apparatus further includes a distribution module 40 configured to respectively allocate a shift factor for each radio remote unit;

The shifting module 10 is further configured to perform a shift operation on the data output by each radio remote unit according to the shift factor assigned by each radio remote unit in the uplink time slot, to obtain a shift corresponding to each radio remote unit The data after the bit.

The allocation module 40 allocates a shift factor for each radio remote unit, the shift factors of the radio remote units are different, the shift factor is represented by F(i), and i represents the number of the radio unit of the radio frequency drawing unit. The shift factor F(i) is an integer. In an embodiment, the allocating module 40 includes: a first allocating unit configured to sequentially number the respective radio remote units, and assign a number to each radio remote unit; the second assigning unit is configured to The number of each remote radio unit is assigned a shift factor for each radio remote unit. For example, the first allocation unit assigns numbers 1, 2, 3, 4, ..., i, ..., M to the respective remote radio units, wherein the number 1 indicates the first radio remote unit The number i indicates the ith radio remote unit, and the number M indicates the Mth radio remote unit. A shift factor is assigned to each radio remote unit according to the number of each radio remote unit, which can be The radio remote unit allocates a shift factor, F(i)=N*i/M+Q, where N is the FFT (Fast Fourier Transformation) point corresponding to the system bandwidth, and L is the pilot symbol CP (Cyclic Prefix) , cyclic prefix) points, M is the number of remote units, Q is a constant, usually, Q can be set to 0; if the calculated F(i) is a decimal, then F(i) needs to be taken For example, rounding is performed by rounding off; a shift factor can be assigned to each remote radio unit by the following formula, F(i)=N*i/H+Q, where N is the number of FFT points corresponding to the system bandwidth. , L is a pilot symbol points CP, H is ^{2 j (1 <= j <} = M, M is the number of remote radio units), j possible values , But it must be such that the 2 ^j> M, Q is a constant, generally, the Q may be set to zero.

The shifting module 10 performs a shift operation on the data output by each radio remote unit according to the shift factor assigned by each radio remote unit, determines the number of shifts according to the shift factor, and then goes from the back to the front. The data output from the remote radio unit is shifted forward. In an embodiment, the shifting module 10 includes: a shifting unit, configured to, in an uplink time slot, pilots in data output by each radio remote unit according to a shift factor allocated by each radio remote unit The symbol data is subjected to a shift operation to obtain shifted data corresponding to each radio remote unit. For a pilot symbol data, denote D=[d(0), d(1),...,d(N+L-1)], and the shift factor is F (i), the pilot symbol data after the shift operation is recorded as D1=[d(N+LF(i)), d(N+LF(i)+1), ..., d (N+L-1), d(0), d(1), ..., d(N+L-1-F(i))].

The modules included in the determining apparatus of the radio remote unit and the units included in each module may be implemented by a processor in the base station; of course, it may also be implemented by a logic circuit, in a specific embodiment. In the process, the processor can be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field programmable gate array (FPGA).

It should be noted that, in the embodiment of the present invention, if the method for determining the radio remote unit is implemented in the form of a software function module, and is sold or used as an independent product, it may also be stored in a computer readable storage medium. in. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to perform a method for determining a remote radio unit in the embodiment of the present invention.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Industrial applicability

In the embodiment of the present invention, before the data outputted by each radio remote unit is sent to the baseband processing unit, the data outputted by each radio remote unit is shifted, so that the data output by each radio remote unit has characteristics. Then, the data output by each radio remote unit after the shift operation is combined, and the baseband processing unit performs time-bias estimation on the combined data to obtain a time-offset estimation value, and determines the radio frequency pull with the highest intensity according to the time-offset estimation value. The far unit is the target radio remote unit, that is to say, one of the plurality of radio remote units connected to the first user equipment can be selected as the target radio remote unit.

Claims

A method for determining a radio remote unit, the method comprising:

Performing a shift operation on the data outputted by each radio remote unit in the uplink time slot, and obtaining the shifted data corresponding to each radio remote unit, wherein each radio remote unit is connected to the first user equipment;

Combining all the shifted data to generate combined data; and transmitting the combined data to the baseband processing unit, where the baseband processing unit performs time-bias estimation on the combined data to obtain a time-offset estimation value;

And determining, according to the time-offset estimation value, a radio remote unit that has the highest signal strength from each radio remote unit as a target radio remote unit.
The method for determining a radio remote unit according to claim 1, wherein in the uplink time slot, the data outputted by each radio remote unit is subjected to a shift operation, and the shifted corresponding to each radio remote unit is obtained. Before the step of data, the method further comprises: respectively assigning a shift factor to each radio remote unit;

The step of performing a shift operation on the data output by each radio remote unit in the uplink time slot, and obtaining the shifted data corresponding to each radio remote unit includes:

In the uplink time slot, the data output by each radio remote unit is shifted according to the shift factor assigned by each radio remote unit, and the shifted data corresponding to each radio remote unit is obtained.
The method for determining a radio remote unit according to claim 2, wherein in the uplink time slot, the data output by each radio remote unit is respectively shifted according to a shift factor allocated by each radio remote unit , the steps of obtaining the shifted data corresponding to each radio remote unit:

In the uplink time slot, the pilot symbol data in the data output by each radio remote unit is respectively shifted according to the shift factor assigned by each radio remote unit, and each shot is obtained. The frequency-shifted data corresponding to the shifted unit.
The method for determining a radio remote unit according to claim 1, wherein the step of determining a radio remote unit having the highest signal strength from each radio remote unit according to the time offset estimation value is a step of a target radio remote unit include:

Obtaining a time offset range value corresponding to each radio remote unit;

And determining, according to the time offset range value of the time offset estimation value, the radio remote unit corresponding to the falling time offset range value as the target radio remote unit.
The method for determining a radio remote unit according to claim 2, wherein the step of assigning a shift factor to each radio remote unit is:

The respective radio remote units are sequentially numbered, and each radio remote unit is assigned a number;

A shift factor is assigned to each radio remote unit according to the number of each radio remote unit.
A determining device for a radio remote unit, the device comprising:

The shifting module is configured to perform a shift operation on the data outputted by each radio remote unit in the uplink time slot, and obtain the shifted data corresponding to each radio remote unit, wherein each radio remote unit and the first user Device connection

The merging module is configured to combine all the shifted data to generate combined data, and send the combined data to the baseband processing unit, so that the baseband processing unit performs time-bias estimation on the combined data. Partial estimate

And a determining module, configured to determine, according to the time offset estimation value, a remote radio unit that has the highest signal strength from each radio remote unit as the target radio remote unit.
The determining device of the radio remote unit according to claim 6, wherein the device further comprises an allocating module, configured to respectively allocate a shift factor for each radio remote unit;

The shifting module is further configured to be in an uplink time slot, respectively, according to each radio remote unit The assigned shift factor performs a shift operation on the data output by each radio remote unit, and obtains the shifted data corresponding to each radio remote unit.
The determining device of the radio remote unit according to claim 7, wherein the shifting module comprises:

The shifting unit is configured to perform shifting operation on the pilot symbol data in the data output by each radio remote unit according to the shift factor allocated by each radio remote unit in the uplink time slot, to obtain each radio remote unit Corresponding shifted data.
The determining device of the radio remote unit according to claim 6, wherein the determining module comprises:

Obtaining a unit, configured to obtain a time offset range value corresponding to each radio remote unit;

The determining unit is configured to determine, according to the time offset range value that the time offset estimation value falls, the radio remote unit that corresponds to the falling time offset range value as the target radio remote unit.
The determining device of the radio remote unit according to claim 7, wherein the allocating module comprises:

The first allocating unit is configured to sequentially number the respective radio remote units, and assign a number to each radio remote unit;

The second allocating unit is configured to allocate a shift factor to each radio remote unit according to the number of each radio remote unit.
A computer storage medium storing computer executable instructions for performing the method of determining the radio remote unit according to any one of claims 1 to 5.