CN116633519A - TDD same-frequency multi-cell processing method, device, equipment and storage medium - Google Patents

TDD same-frequency multi-cell processing method, device, equipment and storage medium Download PDF

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Publication number
CN116633519A
CN116633519A CN202310612965.5A CN202310612965A CN116633519A CN 116633519 A CN116633519 A CN 116633519A CN 202310612965 A CN202310612965 A CN 202310612965A CN 116633519 A CN116633519 A CN 116633519A
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cell
domain data
tdd
frequency domain
frequency
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王飞
吕勇
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Eastlonge Electronics Hk Co ltd
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Eastlonge Electronics Hk Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/01—Reducing phase shift
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application relates to the technical field of communication and discloses a method, a device, equipment and a storage medium for processing a plurality of cells with the same frequency of TDD, wherein the method for processing the plurality of cells with the same frequency of TDD comprises a first time starting point and a second time starting point, and the deviation of a synchronization point is determined; acquiring first time domain data, and acquiring the first frequency domain data through discrete Fourier transform; and determining second frequency domain data based on the synchronization point deviation and the first frequency domain data. By the method, the first time domain data is acquired, the first frequency domain data is obtained after discrete Fourier transform, and the second frequency domain data is obtained through the synchronization point deviation and the first frequency domain data, so that the frequency domain data processing of multiple cells in the same TDD wireless communication system is realized, the process of converting the time domain data of each cell into the frequency domain data for multiple times is avoided, the signal analysis efficiency in the TDD system is improved, and the technical problem of low signal analysis efficiency in the current TDD system is solved.

Description

TDD same-frequency multi-cell processing method, device, equipment and storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and apparatus for TDD co-frequency multi-cell processing, a computer device, and a storage medium.
Background
In a TDD (Time Division Duplexing, time division duplex) system wireless communication system, because uplink and downlink signals of a TDD base station are co-frequency, if uplink and downlink signals are transmitted at the same time, the uplink and downlink signals will interfere with each other, so that in order to avoid the mutual interference of the uplink and downlink signals, all base stations in the sector require strict time synchronization, so as to ensure that the time points of the uplink and downlink signal transmission switching are consistent, thereby ensuring that the signals transmitted between the base stations are single uplink signals or downlink signals at the same time point, and not causing the mutual interference of the uplink and downlink signals. In the whole processing process, the time domain digital signals are required to be stored firstly, then the synchronous points of all cells are followed, the time domain data are respectively processed, the data storage quantity is large, each cell needs to be independently processed by DFT, the calculated quantity is large, and the data processing efficiency is low. Therefore, how to improve the signal analysis efficiency in the TDD system is a technical problem to be solved.
Disclosure of Invention
The application provides a method, a device, a computer device and a storage medium for processing a TDD common-frequency multi-cell so as to improve the efficiency of signal analysis in a TDD system.
In a first aspect, the present application provides a method for TDD co-frequency multi-cell processing, where the method for TDD co-frequency multi-cell processing includes:
determining a preset synchronization point deviation based on a first time starting point of a first cell and a second time starting point of a second cell;
acquiring first time domain data corresponding to the first cell, and acquiring first frequency domain data through discrete Fourier transform;
and determining second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data to realize multi-cell data processing in a Time Division Duplex (TDD) system.
Further, before determining the second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data to implement multi-cell data processing in a time division duplex TDD system, the method includes:
and calculating to obtain a phase compensation value and generating a phase compensation value sequence based on the subcarrier phase rotation characteristic of the preset synchronization point deviation.
Further, based on the subcarrier phase rotation characteristic of the preset synchronization point deviation, calculating a phase compensation value and generating a phase compensation value sequence, including:
calculating the phase compensation value sequence based on the deviation between a first preset formula and the preset synchronous point, wherein the first preset formula is that
Wherein x (k) is the phase compensation value sequence, n TO And K is the subcarrier serial number of the preset synchronization point deviation, K is the number of subcarriers needing compensation, and N is the sampling point number of the discrete Fourier transform.
Further, determining second frequency domain data of a second cell based on a preset synchronization point deviation and the first frequency domain data to implement multi-cell data processing in a time division duplex TDD system, including:
and calculating to obtain the second frequency domain data based on a second preset formula, the phase compensation value sequence, the first frequency domain data and the preset synchronization point deviation.
Further, the second preset formula is: g (r,l) (k)＝G (r-1,l) (k)·x(k),k＝0,1,2,...,K-1；
Wherein the G (r,l) (k) And r is a receiving antenna sequence number, l is a symbol sequence number, x (K) is the phase compensation value sequence, K is the subcarrier sequence number, and K is the number of subcarriers to be compensated.
Further, determining a preset synchronization point deviation based on the first time origin of the first cell and the second time origin of the second cell, comprises:
and taking the first time starting point as a reference, and calculating the difference value between the second time starting point and the first time starting point as the deviation of the preset synchronous point.
Further, the first cell and the second cell belong to the same TDD wireless communication system.
In a second aspect, the present application further provides a TDD co-frequency multi-cell processing apparatus, where the TDD co-frequency multi-cell processing apparatus includes:
the synchronization point deviation determining module is used for determining a preset synchronization point deviation based on the first time starting point of the first cell and the second time starting point of the second cell;
the Fourier transform module is used for acquiring first time domain data corresponding to the first cell and obtaining first frequency domain data through discrete Fourier transform;
and the frequency domain data determining module is used for determining second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data so as to realize multi-cell data processing in a Time Division Duplex (TDD) system.
In a third aspect, the present application also provides a computer device comprising a memory and a processor; the memory is used for storing a computer program; the processor is configured to execute the computer program and implement the TDD co-frequency multi-cell processing method as described above when executing the computer program.
In a fourth aspect, the present application also provides a computer readable storage medium storing a computer program, which when executed by a processor, causes the processor to implement a TDD co-frequency multi-cell processing method as described above.
The application discloses a method, a device, a computer device and a storage medium for TDD same-frequency multi-cell processing, wherein the method for TDD same-frequency multi-cell processing comprises the steps of determining a preset synchronization point deviation based on a first time starting point of a first cell and a second time starting point of a second cell; acquiring first time domain data corresponding to the first cell, and acquiring first frequency domain data through discrete Fourier transform; and determining second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data to realize multi-cell data processing in a Time Division Duplex (TDD) system. By the method, the first time domain data of the first cell belonging to the same TDD communication system is obtained, the first frequency domain data is obtained after discrete Fourier transform, and the second frequency domain data of the second cell is obtained through the synchronization point deviation of the first cell and the second cell and the first frequency domain data, so that the frequency domain data processing of multiple cells in the same TDD wireless communication system is realized, the process of converting the time domain data of each cell into the frequency domain data for multiple times is avoided, the signal analysis efficiency in the TDD system is improved, and the technical problem of low signal analysis efficiency in the current TDD system is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a TDD co-frequency multi-cell processing method according to a first embodiment of the present application;
fig. 2 is a schematic flow chart of a TDD co-frequency multi-cell processing method according to a second embodiment of the present application;
fig. 3 is a schematic flow chart of a TDD co-frequency multi-cell processing method according to a third embodiment of the present application;
fig. 4 is a schematic flow chart of a TDD co-frequency multi-cell processing method according to a fourth embodiment of the present application;
fig. 5 is a specific flowchart of a TDD co-frequency multi-cell processing method according to an embodiment of the present application;
fig. 6 is a schematic block diagram of a TDD co-frequency multi-cell processing apparatus according to an embodiment of the present application;
fig. 7 is a schematic block diagram of a computer device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.
It is to be understood that the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should also be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
The embodiment of the application provides a method, a device, computer equipment and a storage medium for TDD same-frequency multi-cell processing. The method for processing the same frequency and multiple cells of the TDD can be applied to a server, first time domain data of a first cell belonging to the same TDD communication system are obtained through discrete Fourier transform, then second frequency domain data of a second cell are obtained through synchronization point deviation of the first cell and the second cell and the first frequency domain data, frequency domain data processing of multiple cells in the same TDD wireless communication system is realized, the process of converting the time domain data of each cell into the frequency domain data for multiple times is avoided, the signal analysis efficiency in the TDD system is improved, and the technical problem of low signal analysis efficiency in the current TDD system is solved. The server may be an independent server or a server cluster.
Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic flow chart of a TDD co-frequency multi-cell processing method according to a first embodiment of the present application. The method for processing the same frequency and multiple cells of the TDD can be applied to a server, and is used for obtaining first frequency domain data through obtaining first time domain data of a first cell belonging to the same TDD communication system and through discrete Fourier transform, obtaining second frequency domain data of a second cell through synchronization point deviation of the first cell and the second cell and the first frequency domain data, so that frequency domain data processing of multiple cells in the same TDD wireless communication system is realized, the process of converting the time domain data of each cell into the frequency domain data for multiple times is avoided, the signal analysis efficiency in the TDD system is improved, and the technical problem of low signal analysis efficiency in the current TDD system is solved.
As shown in fig. 1, the TDD common-frequency multi-cell processing method specifically includes steps S10 to S30.
Step S10, determining a preset synchronization point deviation based on a first time starting point of a first cell and a second time starting point of a second cell;
step S20, acquiring first time domain data corresponding to the first cell, and obtaining first frequency domain data through discrete Fourier transform;
and step S30, determining second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data so as to realize multi-cell data processing in a Time Division Duplex (TDD) system.
In a specific embodiment, the TDD technology refers to uplink and downlink transmission in the same frequency band, that is, the uplink and downlink channels have reciprocity, that is, the propagation characteristics of the uplink and downlink channels are consistent, so that channel parameters estimated by the uplink channel can be utilized, so that the smart antenna technology and the joint detection technology are easier to implement. The uplink channel estimation parameters are used for downlink beam shaping, so that the realization of the intelligent antenna technology is facilitated. And obtaining a system matrix through channel estimation, and using the system matrix for jointly detecting and distinguishing interference of different users.
Under the TDD system, assuming that 2 same-frequency cells which can be analyzed by the same site equipment exist, each cell synchronization point is respectively T0 and T1 (the synchronization points T0 and T1 are frame starting points in corresponding cell time, the units are the number of sampling points), because strict time synchronization exists among the cells in the TDD system, the synchronization point deviation among the 2 cells is not very large, T0 is selected as a reference, and the synchronization point difference value (T1-T0) of the two cells is calculated and recorded as nTO. When the device receives the time domain data, DFT processing is carried out by using the synchronization point T0, and the frequency domain data G of the T0 cell is obtained and stored. The subsequent processing procedure of the T0 cell is unchanged, the time offset compensation is carried out on the basis of the frequency domain data of the T0 cell by the T1 cell, and the processing mode after the compensation is kept unchanged. According to the characteristic that symbol timing deviation (i.e. synchronization point deviation) can cause phase rotation of the sub-carrier, according to the synchronization point difference, calculating a phase compensation value to be compensated, and performing phase compensation (multiplying frequency domain data by the compensation value) on a frequency domain to achieve the effect of time offset compensation.
The function of the discrete fourier transform is to transform a time domain digital signal into a frequency domain digital signal. The DFT processing is performed on the time domain data corresponding to a certain cell, so as to obtain the frequency domain signal of the corresponding cell, and in this embodiment, the discrete fourier transform processing is performed on the time domain data of the T0 cell by using the synchronization point T0.
The embodiment discloses a method, a device, a computer device and a storage medium for processing a plurality of cells with the same frequency for TDD, wherein the method for processing the plurality of cells with the same frequency for TDD comprises the steps of determining a preset synchronization point deviation based on a first time starting point of a first cell and a second time starting point of a second cell; acquiring first time domain data corresponding to the first cell, and acquiring first frequency domain data through discrete Fourier transform; and determining second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data to realize multi-cell data processing in a Time Division Duplex (TDD) system. By the method, the first time domain data of the first cell belonging to the same TDD communication system is obtained, the first frequency domain data is obtained after discrete Fourier transform, and the second frequency domain data of the second cell is obtained through the synchronization point deviation of the first cell and the second cell and the first frequency domain data, so that the frequency domain data processing of multiple cells in the same TDD wireless communication system is realized, the process of converting the time domain data of each cell into the frequency domain data for multiple times is avoided, the signal analysis efficiency in the TDD system is improved, and the technical problem of low signal analysis efficiency in the current TDD system is solved.
Referring to fig. 2, fig. 2 is a schematic flow chart of a TDD co-frequency multi-cell processing method according to a second embodiment of the present application. The method for processing the same frequency and multiple cells of the TDD can be applied to a server, and is used for obtaining first frequency domain data through obtaining first time domain data of a first cell belonging to the same TDD communication system and through discrete Fourier transform, obtaining second frequency domain data of a second cell through synchronization point deviation of the first cell and the second cell and the first frequency domain data, so that frequency domain data processing of multiple cells in the same TDD wireless communication system is realized, the process of converting the time domain data of each cell into the frequency domain data for multiple times is avoided, the signal analysis efficiency in the TDD system is improved, and the technical problem of low signal analysis efficiency in the current TDD system is solved.
Based on the embodiment shown in fig. 1, in this embodiment, as shown in fig. 2, step S21 is included before step S30.
And S21, calculating to obtain a phase compensation value and generating a phase compensation value sequence based on the subcarrier phase rotation characteristic of the preset synchronization point deviation.
Based on the embodiment shown in fig. 2, in this embodiment, step S21 includes:
calculating the phase compensation value sequence based on the deviation between a first preset formula and the preset synchronous point, wherein the first preset formula is that
Wherein x (k) is the phase compensation value sequence, n TO And K is the subcarrier serial number of the preset synchronization point deviation, K is the number of subcarriers needing compensation, and N is the sampling point number of the discrete Fourier transform.
In a specific embodiment, according to the characteristic that symbol timing deviation (i.e. synchronization point deviation) can cause phase rotation of the sub-carriers, according to the synchronization point difference, a phase compensation value to be compensated is calculated, and phase compensation (multiplication of frequency domain data and compensation value) is performed on a frequency domain, so as to achieve the effect of time offset compensation.
The application discloses a method, a device, a computer device and a storage medium for TDD same-frequency multi-cell processing, wherein the method for TDD same-frequency multi-cell processing comprises the steps of determining a preset synchronization point deviation based on a first time starting point of a first cell and a second time starting point of a second cell; acquiring first time domain data corresponding to the first cell, and acquiring first frequency domain data through discrete Fourier transform; calculating a phase compensation value and generating a phase compensation value sequence based on the subcarrier phase rotation characteristic of the preset synchronization point deviation; and determining second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data to realize multi-cell data processing in a Time Division Duplex (TDD) system. By the method, the first time domain data of the first cell belonging to the same TDD communication system is obtained, the first frequency domain data is obtained after discrete Fourier transform, and the second frequency domain data of the second cell is obtained through the synchronization point deviation of the first cell and the second cell and the first frequency domain data, so that the frequency domain data processing of multiple cells in the same TDD wireless communication system is realized, the process of converting the time domain data of each cell into the frequency domain data for multiple times is avoided, the signal analysis efficiency in the TDD system is improved, and the technical problem of low signal analysis efficiency in the current TDD system is solved.
Referring to fig. 3, fig. 3 is a schematic flow chart of a TDD co-frequency multi-cell processing method according to a third embodiment of the present application. The method for processing the same frequency and multiple cells of the TDD can be applied to a server, and is used for obtaining first frequency domain data through obtaining first time domain data of a first cell belonging to the same TDD communication system and through discrete Fourier transform, obtaining second frequency domain data of a second cell through synchronization point deviation of the first cell and the second cell and the first frequency domain data, so that frequency domain data processing of multiple cells in the same TDD wireless communication system is realized, the process of converting the time domain data of each cell into the frequency domain data for multiple times is avoided, the signal analysis efficiency in the TDD system is improved, and the technical problem of low signal analysis efficiency in the current TDD system is solved.
Based on the embodiment shown in fig. 2, in this embodiment, as shown in fig. 3, the step S30 includes:
step S301, calculating to obtain the second frequency domain data based on a second preset formula, the phase compensation value sequence, the first frequency domain data and the preset synchronization point deviation.
Based on the embodiment shown in fig. 3, in this embodiment, the second preset formula is: g (r,l) (k)＝G (r-1,l) (k)·x(k),k＝0,1,2,...,K-1；
Wherein the G (r,l) (k) And r is a receiving antenna sequence number, l is a symbol sequence number, x (K) is the phase compensation value sequence, K is the subcarrier sequence number, and K is the number of subcarriers to be compensated.
Referring to fig. 4, fig. 4 is a schematic flow chart of a TDD co-frequency multi-cell processing method according to a fourth embodiment of the present application. The method for processing the same frequency and multiple cells of the TDD can be applied to a server, and is used for obtaining first frequency domain data through obtaining first time domain data of a first cell belonging to the same TDD communication system and through discrete Fourier transform, obtaining second frequency domain data of a second cell through synchronization point deviation of the first cell and the second cell and the first frequency domain data, so that frequency domain data processing of multiple cells in the same TDD wireless communication system is realized, the process of converting the time domain data of each cell into the frequency domain data for multiple times is avoided, the signal analysis efficiency in the TDD system is improved, and the technical problem of low signal analysis efficiency in the current TDD system is solved.
Based on the embodiment shown in fig. 1, in this embodiment, as shown in fig. 4, the step S10 includes:
step S101, calculating a difference value between the second time starting point and the first time starting point as the preset synchronization point deviation by taking the first time starting point as a reference.
In a specific embodiment, the synchronization points T0 and T1 are frame start points in time of the corresponding cells, the unit is the number of sampling points, and the difference between the two is equal to how many sampling points are different from the frame start points of the two cells.
Based on all the above embodiments, in this embodiment, the first cell and the second cell belong to the same TDD wireless communication system.
As shown in fig. 5, fig. 5 is a specific flowchart of a TDD co-frequency multi-cell processing method according to an embodiment of the present application.
The first cell in this embodiment corresponds to cell 1 in fig. 5, and the second cell corresponds to cell 2 in fig. 5. When cell 1 is used as a reference, the first time domain data of cell 1 is converted into first frequency domain data through DFT processing. And determining the frequency domain data corresponding to the cell 2 by combining the first frequency domain data and the pre-calculated preset synchronization value deviation (namely time offset compensation in fig. 5), so as to realize multi-cell data processing under the Time Division Duplex (TDD) system. The method comprises the following specific steps:
1. after receiving real-time domain data, synchronously tracking the cell 1 to ensure that the synchronization point of the cell 1 is normal;
2. performing DFT processing on the real-time domain data according to the synchronization point of the cell 1, converting the real-time domain data into frequency domain data, and storing the frequency domain data;
3. carrying out subsequent processing of the cell 1, including analysis of layers such as a physical layer, a layer 2 and a layer 3;
4. the cell 2 performs time offset compensation on the stored frequency domain data;
5. and carrying out subsequent processing of the cell 2, including analysis of each layer such as a physical layer, a layer 2 and a layer 3, and if other cells exist, carrying out processing according to steps 4 and 5.
Referring to fig. 6, fig. 6 is a schematic block diagram of a TDD co-frequency multi-cell processing apparatus according to an embodiment of the present application, where the TDD co-frequency multi-cell processing apparatus is configured to perform the above-described TDD co-frequency multi-cell processing method. The TDD common-frequency multi-cell processing apparatus may be configured in a server.
As shown in fig. 6, the TDD co-frequency multi-cell processing apparatus 400 includes:
a synchronization point deviation determining module 10, configured to determine a preset synchronization point deviation based on a first time starting point of a first cell and a second time starting point of a second cell;
the fourier transform module 20 is configured to obtain first time domain data corresponding to the first cell, and obtain first frequency domain data through discrete fourier transform;
the frequency domain data determining module 30 is configured to determine second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data, so as to implement multi-cell data processing in a time division duplex TDD system.
Further, the TDD co-frequency multi-cell processing apparatus further includes:
and the phase compensation value sequence module is used for calculating a phase compensation value and generating a phase compensation value sequence based on the subcarrier phase rotation characteristic of the preset synchronization point deviation.
Further, the phase compensation value sequence module includes:
a first preset formula unit for calculating the phase compensation value sequence based on the deviation between a first preset formula and the preset synchronization point, wherein the first preset formula is that
Wherein x (k) is the phase compensation value sequence, n TO And K is the subcarrier serial number of the preset synchronization point deviation, K is the number of subcarriers needing compensation, and N is the sampling point number of the discrete Fourier transform.
Further, the frequency domain data determining module 30 includes:
and the second frequency domain data calculation unit is used for calculating the second frequency domain data based on a second preset formula, the phase compensation value sequence, the first frequency domain data and the preset synchronization point deviation.
Further, the synchronization point deviation determination module 10 includes:
and the synchronization point deviation calculation unit is used for calculating the difference value between the second time starting point and the first time starting point by taking the first time starting point as a reference as the preset synchronization point deviation.
It should be noted that, for convenience and brevity of description, the specific working process of the apparatus and each module described above may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
The apparatus described above may be implemented in the form of a computer program which is executable on a computer device as shown in fig. 7.
Referring to fig. 7, fig. 7 is a schematic block diagram of a computer device according to an embodiment of the present application. The computer device may be a server.
With reference to FIG. 7, the computer device includes a processor, memory, and a network interface connected by a system bus, where the memory may include a non-volatile storage medium and an internal memory.
The non-volatile storage medium may store an operating system and a computer program. The computer program comprises program instructions that, when executed, cause a processor to perform any one of a TDD co-frequency multi-cell processing method.
The processor is used to provide computing and control capabilities to support the operation of the entire computer device.
The internal memory provides an environment for the execution of a computer program in a non-volatile storage medium that, when executed by a processor, causes the processor to perform any one of the TDD co-frequency multi-cell processing methods.
The network interface is used for network communication such as transmitting assigned tasks and the like. It will be appreciated by those skilled in the art that the structure shown in FIG. 7 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
It should be appreciated that the processor may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. Wherein the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Wherein in one embodiment the processor is configured to run a computer program stored in the memory to implement the steps of:
determining a preset synchronization point deviation based on a first time starting point of a first cell and a second time starting point of a second cell;
acquiring first time domain data corresponding to the first cell, and acquiring first frequency domain data through discrete Fourier transform;
and determining second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data to realize multi-cell data processing in a Time Division Duplex (TDD) system.
In one embodiment, before determining the second frequency domain data of the second cell to implement multi-cell data processing in a time division duplex TDD system based on the preset synchronization point deviation and the first frequency domain data, the method is used for implementing:
and calculating to obtain a phase compensation value and generating a phase compensation value sequence based on the subcarrier phase rotation characteristic of the preset synchronization point deviation.
In one embodiment, based on the subcarrier phase rotation characteristic of the preset synchronization point deviation, a phase compensation value is calculated and a phase compensation value sequence is generated, so as to realize:
calculating the phase compensation value sequence based on the deviation between a first preset formula and the preset synchronous point, wherein the first preset formula is that
Wherein x (k) is the phase compensation value sequence, n TO K is the subcarrier serial number of the preset synchronization point deviation, K is the number of subcarriers needing compensation,and N is the sampling point number of the discrete Fourier transform.
In one embodiment, based on the preset synchronization point deviation and the first frequency domain data, determining second frequency domain data of a second cell to implement multi-cell data processing in a time division duplex TDD system, where the second frequency domain data is used for implementing:
and calculating to obtain the second frequency domain data based on a second preset formula, the phase compensation value sequence, the first frequency domain data and the preset synchronization point deviation.
In one embodiment, a preset synchronization point offset is determined based on a first time start point of a first cell and a second time start point of a second cell for implementing:
and taking the first time starting point as a reference, and calculating the difference value between the second time starting point and the first time starting point as the deviation of the preset synchronous point.
The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, the computer program comprises program instructions, and the processor executes the program instructions to realize any one of the TDD same-frequency multi-cell processing methods provided by the embodiment of the application.
The computer readable storage medium may be an internal storage unit of the computer device according to the foregoing embodiment, for example, a hard disk or a memory of the computer device. The computer readable storage medium may also be an external storage device of the computer device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like, which are provided on the computer device.
While the application has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (10)

1. The method for processing the same frequency and multiple cells of the TDD is characterized by comprising the following steps of:
determining a preset synchronization point deviation based on a first time starting point of a first cell and a second time starting point of a second cell;
acquiring first time domain data corresponding to the first cell, and acquiring first frequency domain data through discrete Fourier transform;
and determining second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data to realize multi-cell data processing in a Time Division Duplex (TDD) system.
2. The TDD co-frequency multi-cell processing method according to claim 1, wherein before determining the second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data to implement multi-cell data processing in a time division duplex TDD system, the method comprises:
and calculating to obtain a phase compensation value and generating a phase compensation value sequence based on the subcarrier phase rotation characteristic of the preset synchronization point deviation.
3. The TDD co-frequency multi-cell processing method according to claim 2, wherein the calculating the phase compensation value and generating the phase compensation value sequence based on the subcarrier phase rotation characteristic of the preset synchronization point deviation includes:
calculating the phase compensation value sequence based on the deviation between a first preset formula and the preset synchronous point, wherein the first preset formula is that
Wherein x (k) is the phase compensation value sequence, n TO And K is the subcarrier serial number of the preset synchronization point deviation, K is the number of subcarriers needing compensation, and N is the sampling point number of the discrete Fourier transform.
4. The method for TDD co-frequency multi-cell processing according to claim 3, wherein determining the second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data to implement multi-cell data processing in a time division duplex TDD system comprises:
and calculating to obtain the second frequency domain data based on a second preset formula, the phase compensation value sequence, the first frequency domain data and the preset synchronization point deviation.
5. The TDD co-frequency multi-cell processing method of claim 4, wherein the second preset formula is: g (r,l) (k)＝G (r-1,l) (k)·x(k),k＝0,1,2,...,K-1；
Wherein the G (r,l) (k) And r is a receiving antenna sequence number, l is a symbol sequence number, x (K) is the phase compensation value sequence, K is the subcarrier sequence number, and K is the number of subcarriers to be compensated.
6. The TDD co-frequency multi-cell processing method of claim 1, wherein determining the preset synchronization point offset based on the first time start point of the first cell and the second time start point of the second cell comprises:
and taking the first time starting point as a reference, and calculating the difference value between the second time starting point and the first time starting point as the deviation of the preset synchronous point.
7. The TDD co-frequency multi-cell processing method according to claims 1 to 6, wherein the first cell and the second cell belong to the same TDD wireless communication system.
8. A TDD co-frequency multi-cell processing apparatus, wherein the TDD co-frequency multi-cell processing apparatus comprises:
the synchronization point deviation determining module is used for determining a preset synchronization point deviation based on the first time starting point of the first cell and the second time starting point of the second cell;
the Fourier transform module is used for acquiring first time domain data corresponding to the first cell and obtaining first frequency domain data through discrete Fourier transform;
and the frequency domain data determining module is used for determining second frequency domain data of the second cell based on the preset synchronization point deviation and the first frequency domain data so as to realize multi-cell data processing in a Time Division Duplex (TDD) system.
9. A computer device, the computer device comprising a memory and a processor;
the memory is used for storing a computer program;
the processor is configured to execute the computer program and implement the TDD co-frequency multi-cell processing method according to any one of claims 1 to 7 when the computer program is executed.
10. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, which when executed by a processor causes the processor to implement the TDD co-frequency multi-cell processing method according to any one of claims 1 to 7.
CN202310612965.5A 2023-05-26 2023-05-26 TDD same-frequency multi-cell processing method, device, equipment and storage medium Pending CN116633519A (en)

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