WO2019134666A1 - Procédé et dispositif de multiplexage par répartition en fréquence souple, système à antennes multiples à grande échelle, et support de stockage - Google Patents

Procédé et dispositif de multiplexage par répartition en fréquence souple, système à antennes multiples à grande échelle, et support de stockage Download PDF

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Publication number
WO2019134666A1
WO2019134666A1 PCT/CN2019/070280 CN2019070280W WO2019134666A1 WO 2019134666 A1 WO2019134666 A1 WO 2019134666A1 CN 2019070280 W CN2019070280 W CN 2019070280W WO 2019134666 A1 WO2019134666 A1 WO 2019134666A1
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Prior art keywords
terminal
bandwidth
edge
antenna system
allocated
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PCT/CN2019/070280
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English (en)
Chinese (zh)
Inventor
王锐
张泽中
李洋
周泽华
李风从
郝祁
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南方科技大学
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Publication of WO2019134666A1 publication Critical patent/WO2019134666A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a soft frequency division multiplexing method and apparatus, a large-scale multi-antenna system, and a computer readable storage medium.
  • pilot- Contamination Large-scale multi-antenna systems need to acquire channel information of the terminal before data transmission to make full use of spatial degrees of freedom to suppress interference.
  • the length of the pilot used to measure the terminal channel is limited, thus limiting the number of orthogonal pilots (the maximum number of orthogonal pilots is equal to the length of the pilot)
  • the pilots are multiplexed, so that the base station can not accurately obtain the channel information of the terminal due to the interference of the same pilot when using the pilot for channel estimation, thereby affecting the data transmission performance of the terminal and causing pilot pollution (pilot- Contamination).
  • the related art has proposed a frequency division multiplexing technique to divide the bandwidth of a large-scale multi-antenna system, and each adjacent cell uses a different frequency band for transmission. Due to the staggered frequency band, the interference outside the cell affected by the data transmission of each cell terminal will be greatly reduced, the pilot pollution problem is suppressed, and the data transmission performance is also improved accordingly.
  • the frequency resources available to the large-scale multi-antenna system are limited. After different frequency bands are allocated to different cells, the frequency resources available to each cell are more limited, which reduces the spectrum utilization rate and greatly increases the probability of co-channel interference.
  • Embodiments of the present application provide a soft frequency division multiplexing method and apparatus, a large-scale multi-antenna system, and a computer readable storage medium.
  • a soft frequency division multiplexing method is for controlling a large-scale multi-antenna system, where the large-scale multi-antenna system includes a plurality of base stations, each of which covers a cell for a terminal in the cell to pass.
  • the large-scale multi-antenna system performs communication
  • the soft frequency division multiplexing method includes the following steps: dividing the terminal of each of the cells according to a distance between each of the terminals and a corresponding base station a central terminal and an edge terminal; allocating a total bandwidth of the large-scale multi-antenna system to each of the cells and allocating a first partial bandwidth of the total bandwidth to the edge terminal of the cell and to a neighboring cell
  • the edge terminal allocates a second portion of the total bandwidth, the first portion of the bandwidth has no overlap with the second portion of the bandwidth; and assigns different lengths of pilot sequences to the edge terminal and the central terminal
  • the length of the pilot sequence allocated by the edge terminal is greater than the length of the pilot sequence to which the central terminal is allocated.
  • the step of dividing the terminal of each of the cells into a central terminal and an edge terminal according to a distance between each of the terminals and a corresponding base station includes the following steps: determining Determining whether the distance between the terminal and the corresponding base station is greater than or equal to a predetermined distance; determining that the terminal is the edge terminal when the distance is greater than or equal to the predetermined distance; and when the distance is less than the predetermined distance Determining that the terminal is the central terminal.
  • the central terminal is allocated a greater bandwidth than the edge terminal is allocated.
  • the soft frequency division multiplexing method further includes the step of determining, according to the first partial bandwidth or the second partial bandwidth, the bandwidth allocated by the corresponding central terminal of the cell .
  • no data exchange takes place between the plurality of base stations.
  • the soft frequency division multiplexing device of the embodiment of the present application is configured to control a large-scale multi-antenna system, where the large-scale multi-antenna system includes multiple base stations, and the area served by the base station is one cell, and the soft frequency division multiplexing
  • the device includes a partitioning module, a first distribution module, and a second distribution module.
  • the first dividing module is configured to divide the terminal of each of the cells into a central terminal and an edge terminal according to a distance between each of the terminals and a corresponding base station; Allocating a total bandwidth of the large-scale multi-antenna system to each of the cells and allocating a first partial bandwidth of the total bandwidth to the edge terminal of the cell and allocating the edge terminal to an adjacent one of the cells a second partial bandwidth of the total bandwidth, the first partial bandwidth being different from the second partial bandwidth; the second allocation module assigning a pilot sequence of different lengths to the edge terminal and the central terminal, The length of the pilot sequence allocated by the edge terminal is greater than the length of the pilot sequence allocated by the central terminal.
  • the dividing module includes: a determining unit, configured to determine whether a distance between the terminal and the corresponding base station is greater than or equal to a predetermined distance; and a first determining unit, the first determining unit Determining that the terminal is the edge terminal when the distance is greater than or equal to the predetermined distance; and a second determining unit, configured to determine, when the distance is less than the predetermined distance The terminal is the central terminal.
  • the central terminal is allocated a greater bandwidth than the edge terminal is allocated.
  • the soft frequency division multiplexing device further includes: a determining module, configured to determine, according to the first partial bandwidth or the second partial bandwidth, the corresponding center of the cell The bandwidth of the terminal.
  • no data exchange takes place between the plurality of base stations.
  • the large-scale multi-antenna system includes a plurality of base stations, a plurality of terminals, one or more processors, a memory, and one or more programs, wherein the one or more A program is stored in the memory and configured to be executed by the one or more processors, the program including instructions for performing the soft frequency division multiplexing method.
  • a computer readable storage medium of an embodiment of the present application includes a computer program for use in conjunction with a large scale multi-antenna system, the computer program being executable by a processor to perform the soft frequency division multiplexing method.
  • the soft frequency division multiplexing method and apparatus, the large-scale multi-antenna system and the computer-readable storage medium of the embodiments of the present application divide the terminal into a central terminal and an edge terminal by using a distance from the terminal to the corresponding base station, and then the large-scale multi-antenna system
  • the total bandwidth is allocated to each cell, and the central terminal and the edge terminal of each cell are allocated different parts of the total bandwidth and different parts of the total bandwidth are allocated to the edge terminals of the neighboring cells according to the location of the cell, and in addition, the edge terminal is also A longer pilot sequence is assigned.
  • the frequency resources of the large-scale multi-antenna system can be fully utilized and the frequency bands between the edge terminals of the neighboring cells are different, and the edge terminals have longer pilot sequences, which further suppresses pilot pollution and improves the spectrum.
  • the utilization rate greatly reduces the probability of co-channel interference and improves the data transmission performance of the cell.
  • FIG. 1 is a schematic flowchart of a soft frequency division multiplexing method according to an embodiment of the present application
  • FIG. 2 is a schematic block diagram of a soft frequency division multiplexing device according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of an application scenario of a soft frequency division multiplexing method according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of an application scenario of a soft frequency division multiplexing method according to another embodiment of the present application.
  • FIG. 5 is a schematic diagram of total bandwidth division of a large-scale multi-antenna system according to an embodiment of the present application
  • FIG. 6 is a schematic structural diagram of a frame according to an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a soft frequency division multiplexing method according to another embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a partitioning module according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of an application scenario of a soft frequency division multiplexing method according to still another embodiment of the present application.
  • FIG. 10 is a schematic diagram of an application scenario of a soft frequency division multiplexing method according to still another embodiment of the present application.
  • FIG. 11 is a schematic flowchart of a soft frequency division multiplexing method according to still another embodiment of the present application.
  • FIG. 12 is a block diagram of a soft frequency division multiplexing apparatus according to another embodiment of the present application.
  • FIG. 13 is a block diagram of a large-scale multi-antenna system according to an embodiment of the present application.
  • FIG. 14 is a schematic diagram of the connection of a large-scale multi-antenna system and a computer readable storage medium according to an embodiment of the present application.
  • a soft frequency division multiplexing method is used to control a large-scale multi-antenna system 1000.
  • the large-scale multi-antenna system 1000 includes a plurality of base stations 100, each of which covers a cell 800.
  • the terminal 200 in the cell 800 communicates through the large-scale multi-antenna system 1000, and the area covered by the cell 800 is an effective coverage area of the signal of the base station 100.
  • the soft frequency division multiplexing method includes the following steps:
  • the terminal 200 of each cell 800 is divided into a central terminal and an edge terminal according to the distance between each terminal 200 and the corresponding base station 100;
  • S14 allocate a total bandwidth of the large-scale multi-antenna system 1000 to each cell 800 and allocate a first partial bandwidth of the total bandwidth to the edge terminal of the cell 800 and a second partial bandwidth of the total bandwidth to the edge terminal of the adjacent cell 800, The first part of the bandwidth has no overlap with the second part of the bandwidth;
  • S16 Allocating pilot sequences of different lengths to the edge terminal and the central terminal, the length of the pilot sequence allocated by the edge terminal is greater than the length of the pilot sequence allocated by the central terminal.
  • a soft frequency division multiplexing apparatus 10 is configured to control a large-scale multi-antenna system 1000.
  • the large-scale multi-antenna system 1000 includes a plurality of base stations 100, and each base station 100 covers one cell. 800 for the terminal 200 in the cell 800 to communicate through the large-scale multi-antenna system 1000, the area covered by the cell 800 is the effective coverage area of the signal of the base station 100, and the soft-frequency division multiplexing device 10 includes the dividing module 12, the first allocation Module 14 and second distribution module 16.
  • the dividing module 12 is configured to divide the terminal 200 of each cell 800 into a central terminal and an edge terminal according to the distance between each terminal 200 and the corresponding base station 100.
  • the first allocation module 14 is configured to allocate a total bandwidth of the large-scale multi-antenna system 1000 to each cell 800 and allocate a first partial bandwidth of the total bandwidth to the edge terminals of the cell 800 and allocate a total bandwidth to the edge terminals of the adjacent cells 800.
  • the second part of the bandwidth, the first part of the bandwidth is different from the second part of the bandwidth.
  • the second allocation module 16 allocates pilot sequences of different lengths to the edge terminal and the central terminal, and the length of the pilot sequence allocated by the edge terminal is greater than the length of the pilot sequence allocated by the central terminal.
  • the soft frequency division multiplexing method of the embodiment of the present application can be implemented by the soft frequency division multiplexing device 10 of the embodiment of the present application, wherein the step S12 can be implemented by the dividing module 12.
  • Step S14 can be implemented by the first distribution module 14.
  • Step S16 can be implemented by the second allocation module 16.
  • the soft frequency division multiplexing method, the soft frequency division multiplexing device 10, and the large-scale multi-antenna system 1000 of the embodiments of the present application divide the terminal 200 into a central terminal and an edge terminal based on the distance from the terminal 200 to the corresponding base station 100, and then the large-scale
  • the total bandwidth of the multi-antenna system 1000 is allocated to each cell 800, and the central terminal and the edge terminal of each cell 800 are allocated different portions of the total bandwidth and the total bandwidth is allocated to the edge terminals of the neighboring cell 800 according to the location of the cell 800.
  • a longer pilot sequence is allocated for the edge terminal.
  • the frequency resources of the large-scale multi-antenna system 1000 can be fully utilized and the frequency bands between the edge terminals of the neighboring cells 800 are different from each other, and the edge terminals have longer pilot sequences, thereby further suppressing pilot pollution.
  • the spectrum utilization rate is improved and the probability of co-channel interference is greatly reduced, and the data transmission performance of the cell 800 is improved.
  • the terminal 200 of the embodiment of the present application includes, but is not limited to, a smart phone, a personal computer (PC), a tablet computer (PAD), a personal digital assistant (PDA), and a mobile internet device (MID). Wait.
  • PC personal computer
  • PAD tablet computer
  • PDA personal digital assistant
  • MID mobile internet device
  • the base station 100 (ie, the public mobile communication base station) is a form of a radio station, and refers to a radio transmission and reception of information transmission between a mobile communication switching center and a mobile telephone terminal in a certain radio signal coverage area.
  • Cell 800 is the area covered by the radio signal of base station 100.
  • the frequency interval of the wireless signal may be 200 KHz, and the total bandwidth may be from 890 MHz, 890.2 MHz, 890.4 MHz, 890.6 MHz, 890.8 MHz, 891 MHz, ..., 915 MHz according to the frequency interval of 200 KHz.
  • each frequency band is numbered, from 1, 2, 3, 4, ..., 125, these fixed frequency numbers are the frequency points. That is to say, different frequency points can represent different frequencies.
  • the large-scale multi-antenna system 1000 has seven base stations 100, that is, seven cells 800, the base station 100 is located at the center of the cell 800, and the cell 800 has a radius of R meters, each The cell 800 has K terminals 200.
  • the K terminals 200 are divided into edge terminals and central terminals according to the distance between the K terminals 200 and the base station 100. Then, as shown in FIG.
  • each of the bandwidths includes a plurality of frequency bands, and different frequency bands are allocated between the edge terminals of the adjacent cells 800 and between the edge terminals and the central terminals of each of the cells 800, and each frequency band corresponds to a fixed frequency band.
  • the terminal 200 can communicate with the base station 100 through a fixed frequency of one of the allocated bandwidths.
  • the edge terminals of the neighboring cell 800 can communicate using different frequency bands, thereby reducing the probability of pilot pollution, and fully utilizing the total bandwidth reduces co-channel interference and improves data transmission performance.
  • the central terminal can also utilize more bandwidth to improve the data transmission performance of the central terminal.
  • the frame structure of data transmission between the edge terminal and the central terminal is shown in FIG. 6. It can be seen that one frame of data is composed of pilot and uplink and downlink data, and the edge terminal is designed with a longer pilot sequence (ie, allocated within one frame). More time is spent on pilot transmission). In this way, more orthogonal pilots can be added, and pilot multiplexing can be reduced to further suppress pilot pollution. Since the total time of one frame of data is fixed and the transmission time of pilots becomes longer, corresponding data transmission is sacrificed accordingly. Time, but this ensures that the edge terminal performs channel estimation more accurately.
  • the error in channel estimation is reduced, so that the interference of data transmission is reduced, so that the speed of data transmission becomes faster, and the total amount of data transmission per unit time is instead increased. It is verified by simulation that the signal gain of the edge terminal of the cell 800 can reach 8-10 Db and the signal gain of the central terminal of the cell 800 can reach 2 Db.
  • step S12 includes the following steps:
  • S122 Determine whether the distance between the terminal and the corresponding base station 100 is greater than or equal to a predetermined distance.
  • S126 Determine that the terminal 200 is the central terminal when the distance is less than the predetermined distance.
  • the partitioning module 12 includes a determining unit 122 , a first determining unit 124 , and a second determining unit 126 .
  • the determining unit 122 is configured to determine whether the distance between the terminal 200 and the corresponding base station 100 is greater than a predetermined distance.
  • the first determining unit 124 is configured to determine that the terminal 200 is an edge terminal when the distance is greater than or equal to a predetermined distance.
  • the second determining unit 126 is configured to determine that the terminal 200 is the central terminal when the distance is less than the predetermined distance.
  • step S122 can be implemented by the dividing unit 122.
  • Step S124 can be implemented by the first determining unit 124.
  • Step S126 can be implemented by the second determining unit 126.
  • the distance between the terminal 200 and the corresponding base station 100 can quickly determine whether the terminal 200 is an edge terminal or a center terminal.
  • the base station 100 when communicating with the terminal 200, the base station 100 first determines whether the distance between the terminal 200 and itself is greater than or equal to a predetermined distance (eg, the predetermined distance is 0.8 times the radius R of the cell 800), and the distance is greater than or It is determined that the terminal 200 is an edge terminal when it is equal to a predetermined distance (for example, 0.8R). The terminal 200 is determined to be the center terminal when the distance is less than a predetermined distance (for example, 0.8R).
  • a predetermined distance eg, the predetermined distance is 0.8 times the radius R of the cell 800
  • the division of the terminal 200 can be quickly performed, and the corresponding frequency band can be quickly allocated to the corresponding terminal 200.
  • the terminal 200 may be divided according to at least one of a distance between the terminal 200 and the corresponding base station 100, a difference between the received power of the terminal 200 and a transmit power of the base station 100, and a signal to noise ratio of the terminal 200.
  • a distance between the terminal 200 and the corresponding base station 100 a difference between the received power of the terminal 200 and a transmit power of the base station 100, and a signal to noise ratio of the terminal 200.
  • the terminal 200 is divided into an edge terminal and a center terminal according to the difference between the received power of the terminal 200 and the transmission power of the base station 100 (i.e., path loss).
  • the base station 100 first passes the RSRP (reference signal received power) reported by the terminal 200, and then determines whether the difference between the received power and the downlink transmit power is greater than or equal to a predetermined difference, and the difference is greater than or equal to a predetermined value.
  • the terminal 200 is an edge terminal, and when the difference is less than the predetermined difference, the terminal 200 is determined to be the center terminal. In this way, the category of the terminal 200 can be determined quickly and more accurately.
  • the class of the terminal 200 is divided by the signal to noise ratio of the terminal 200.
  • the signal-to-noise ratio can be obtained by CQI (Channel Quality Indicator) information reported by the terminal 200, or can be obtained by the ratio of the strength of the Sounding signal (probe reference signal) received by the base station 100 to the noise power.
  • the base station 100 determines whether the signal to noise ratio is greater than a predetermined threshold, determines that the terminal 200 is an edge terminal when the signal to noise ratio is less than a predetermined threshold, and determines that the terminal 200 is the central terminal when the signal to noise ratio is greater than or equal to a predetermined threshold.
  • the terminal 200 can be divided into an edge terminal and a center terminal by a combination of distance and path loss, for example, by combining weights different distances and path losses; or by a combination of distance and signal to noise ratio, for example, by giving distance and The signal-to-noise ratio is different from the weighted value judgment to divide the terminal 200 into an edge terminal and a center terminal; or the terminal 200 is integrated by a combination of path loss and signal-to-noise ratio, for example, weights that are different for path loss and signal-to-noise ratio.
  • the terminal 200 can be divided into edge terminals by a combination of distance, path loss, and signal-to-noise ratio, for example, weights, distance, path loss, and signal-to-noise ratio are different.
  • Central terminal preferably, the terminal 200 can be divided into edge terminals by a combination of distance, path loss, and signal-to-noise ratio, for example, weights, distance, path loss, and signal-to-noise ratio are different.
  • the terminal 200 can be accurately divided into an edge terminal and a center terminal.
  • the central terminal is allocated a greater bandwidth than the edge terminal is allocated.
  • the edge terminal only occupies a small portion of all the terminals 200 of the cell 800, and the central terminal occupies most of all the terminals 200 of the cell 800, so the bandwidth allocated to the central terminal may be greater than that allocated to the edge terminal.
  • the bandwidth for example, the bandwidth allocated to the central terminal may be three times the bandwidth allocated by the edge terminal, that is, the total bandwidth is divided into four, one for the edge terminal and three for the central terminal. In this way, the central terminal and the edge terminal can ensure sufficient bandwidth, fully utilize the total bandwidth to reduce co-channel interference, and improve data transmission performance of the central terminal and the edge terminal.
  • the ratio of the bandwidth allocated by the edge terminal and the central terminal to the total bandwidth of the corresponding cell 800 may be determined according to the number ratio of the edge terminal and the central terminal. For example, in general, when the number of edge terminals accounts for less than 20% of all terminals 200, the bandwidth ratio of the allocated edge terminal to the central terminal is 1:3, and the number of edge terminals of the cell 800 is 500, and the number of central terminals 1000, the edge terminal accounts for one-third of all the terminals 200. At this time, the proportion of the bandwidth allocated by the edge terminal can be appropriately increased, for example, the total bandwidth is divided into 5 shares, and the edge terminal accounts for 2 copies, and the central terminal corresponds to 3 of them, the ratio becomes 2:3. In this way, when the number of edge terminals of the cell 800 is relatively large and the number of central terminals is small, more bandwidth is allocated to the edge terminal to ensure data transmission performance of the edge terminal.
  • the soft frequency division multiplexing method further includes the following steps:
  • S18 Determine, according to the first part of the bandwidth or the second part of the bandwidth, a bandwidth allocated by the central terminal of the corresponding cell 800.
  • the soft frequency division multiplexing device 10 includes a determination module 18.
  • the determining module 18 is configured to determine a bandwidth of the central terminal of the corresponding cell 800 according to the first partial bandwidth or the second partial bandwidth.
  • step S18 can be implemented by the determination module 18.
  • the bandwidth allocated by the central terminal of the cell 800 corresponding to the first partial bandwidth and the bandwidth allocated by the central terminal of the cell 800 corresponding to the second partial bandwidth are determined by the first partial bandwidth or the second partial bandwidth, and the large-scale is utilized.
  • the frequency resources of the multi-antenna system simultaneously reduce the co-channel interference of the central terminal and the edge terminal, thereby improving the data transmission performance of the cell 800.
  • the bandwidth of the edge terminal of one cell 800 is regarded as the first part of bandwidth
  • the bandwidth of the neighboring cell 800 of the cell 800 can be regarded as the second part of the bandwidth, for example, the edge terminal of the cell 1 is used.
  • the bandwidth of the edge terminal of the cell 2 is the bandwidth of the second part.
  • the bandwidth of the edge terminal of the cell 2 is regarded as the bandwidth of the first part
  • the cell 3 adjacent to the cell 2 is regarded as the second.
  • Part of the bandwidth that is, the bandwidth of the edge terminals of two neighboring cells is regarded as the first part of the bandwidth and the second part of the bandwidth, respectively, and the bandwidth of the edge terminals of the two adjacent cells is different.
  • the bandwidth occupied by the central terminal of the corresponding cell 800 is determined according to the allocated bandwidth of the edge terminal of the cell 1-7. If the bandwidth allocated by the edge terminal of the cell 1 is the bandwidth 1, the bandwidth allocated by the central terminal of the cell 1 is the bandwidth 2 -4, the bandwidth allocated by the edge terminal of the cell 2 is the bandwidth 3, and the bandwidth allocated by the central terminal of the cell 2 is the bandwidths 1, 2 and 4, and the bandwidth allocated by the central terminal of the other cell 800 can be similarly obtained. This can ensure that the edge terminals of the neighboring cell 800 can be allocated to different frequency bands, thereby suppressing pilot pollution between different cells 800 and improving the data transmission speed of the edge terminals.
  • no data exchange takes place between the plurality of base stations 100.
  • the base station 100 does not need to perform data exchange and cooperation to adjust the bandwidth of the edge terminal, but needs to determine whether the terminal 200 is a central terminal or an edge terminal, thereby being fixed as an edge terminal and a center.
  • the terminal provides the allocated bandwidth so that the data processing load of the base station 100 can be alleviated.
  • a large-scale multi-antenna system 1000 of an embodiment of the present application includes a plurality of base stations 100, a plurality of terminals 200, one or more processors 300, a memory 400, and one or more programs.
  • One or more of the programs are stored in memory 400 and are configured to be executed by one or more processors 300, the program including instructions for performing the soft frequency division multiplexing method of any of the above-described embodiments.
  • the program includes instructions for performing the following soft frequency division multiplexing method:
  • the terminal 200 of each cell 800 is divided into a central terminal and an edge terminal according to the distance between each terminal 200 and the corresponding base station 100;
  • S14 allocate a total bandwidth of the large-scale multi-antenna system to each cell 800 and allocate a first partial bandwidth of the total bandwidth to the edge terminal of the cell 800 and a second partial bandwidth of the total bandwidth to the edge terminal of the adjacent cell 800, Part of the bandwidth does not overlap with the bandwidth of the second part;
  • S16 Allocating pilot sequences of different lengths to the edge terminal and the central terminal, the length of the pilot sequence allocated by the edge terminal is greater than the length of the pilot sequence allocated by the central terminal.
  • a computer readable storage medium 8000 of an embodiment of the present application includes a computer program for use in conjunction with a massive multi-antenna system 1000.
  • the computer program can be executed by the processor 300 to perform the soft frequency division multiplexing method of any of the above embodiments.
  • a computer program can be executed by processor 300 to perform the following soft frequency division multiplexing method:
  • the terminal 200 of each cell 800 is divided into a central terminal and an edge terminal according to the distance between each terminal 200 and the corresponding base station 100;
  • S14 allocate a total bandwidth of the large-scale multi-antenna system to each cell 800 and allocate a first partial bandwidth of the total bandwidth to the edge terminal of the cell 800 and a second partial bandwidth of the total bandwidth to the edge terminal of the adjacent cell 800, Part of the bandwidth does not overlap with the bandwidth of the second part;
  • S16 Allocating pilot sequences of different lengths to the edge terminal and the central terminal, the length of the pilot sequence allocated by the edge terminal is greater than the length of the pilot sequence allocated by the central terminal.
  • the soft frequency division multiplexing method, the soft frequency division multiplexing device 10, the large-scale multi-antenna system 1000, and the computer-readable storage medium 8000 of the embodiments of the present application divide the terminal 200 into a central terminal based on the distance from the terminal 200 to the corresponding base station 100.
  • the edge terminal then allocates the total bandwidth of the large-scale multi-antenna system 1000 to each cell 800, allocates different portions of the total bandwidth for the central terminal and the edge terminal of each cell 800, and is the neighboring cell 800 according to the location of the cell 800.
  • the edge terminal allocates different parts of the total bandwidth and, in addition, allocates a longer pilot sequence for the edge terminal.
  • the frequency resources of the large-scale multi-antenna system 1000 can be fully utilized and the frequency bands between the edge terminals of the neighboring cells 800 are different from each other, and the edge terminals have longer pilot sequences, thereby further suppressing pilot pollution.
  • the spectrum utilization rate is improved and the probability of co-channel interference is greatly reduced, and the data transmission performance of the cell 800 is improved.

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Abstract

L'invention concerne un procédé de multiplexage par répartition en fréquence souple, un dispositif de multiplexage par répartition en fréquence souple (10), un système à antennes multiples à grande échelle (1000) et un support de stockage lisible par ordinateur (8000). Le procédé de multiplexage par répartition en fréquence souple est utilisé pour commander le système à antennes multiples à grande échelle (1000), et le système à antennes multiples à grande échelle (1000) comprend de multiples stations de base (100). Le procédé de multiplexage par répartition en fréquence souple consiste à : diviser des terminaux (200) de chaque cellule en un terminal central et un terminal de périphérie en fonction de la distance entre chaque terminal (200) et une station de base (100) correspondante (S12) ; attribuer une bande passante complètement différente au terminal de périphérie d'une cellule voisine (S14) ; et attribuer une séquence pilote plus longue au terminal de périphérie (S16).
PCT/CN2019/070280 2018-01-04 2019-01-03 Procédé et dispositif de multiplexage par répartition en fréquence souple, système à antennes multiples à grande échelle, et support de stockage WO2019134666A1 (fr)

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CN201810008985.0A CN108322240B (zh) 2018-01-04 2018-01-04 软频分复用方法及装置、大规模多天线系统和存储介质

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108322240B (zh) * 2018-01-04 2021-10-01 南方科技大学 软频分复用方法及装置、大规模多天线系统和存储介质
CN109150259B (zh) * 2018-09-06 2021-04-27 华北电力大学（保定） 一种基于Massive MIMO系统的动态迁移导频分配方法
CN111246573B (zh) * 2018-11-28 2023-04-25 中国移动通信集团浙江有限公司 一种减少大规模阵列天线基站小区间干扰的方法及装置
CN113630888A (zh) * 2021-09-18 2021-11-09 江苏亨鑫众联通信技术有限公司 一种bwp切换方法及相关设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1783861A (zh) * 2004-12-01 2006-06-07 华为技术有限公司 一种在无线通信系统中实现频率软复用的方法
CN106549884A (zh) * 2015-12-31 2017-03-29 南方科技大学 信道估计方法和系统
US20170230836A1 (en) * 2012-05-18 2017-08-10 Dali Systems Co. Ltd. Method and system for soft frequency reuse in a distributed antenna system
CN107197464A (zh) * 2017-07-31 2017-09-22 广东工业大学 消除相邻小区对边缘用户干扰的频率资源分配方法及系统
CN108322240A (zh) * 2018-01-04 2018-07-24 南方科技大学 软频分复用方法及装置、大规模多天线系统和存储介质

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101801091B (zh) * 2010-01-28 2012-11-14 北京邮电大学 一种ofdm/mimo系统中资源分配的方法和装置
CN102790969B (zh) * 2011-05-16 2015-02-04 普天信息技术研究院有限公司 一种上行干扰中配置边缘频带的方法
CN105472745B (zh) * 2014-09-04 2020-09-08 北京三星通信技术研究有限公司 一种探测导频信号资源的分配方法及设备
CN105049098B (zh) * 2015-06-15 2018-07-17 西安交通大学 大规模mimo系统中克服导频污染的部分导频复用方法
CN105049166B (zh) * 2015-08-17 2017-11-28 清华大学 大规模天线小区中基于用户地理位置信息的导频分配方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1783861A (zh) * 2004-12-01 2006-06-07 华为技术有限公司 一种在无线通信系统中实现频率软复用的方法
US20170230836A1 (en) * 2012-05-18 2017-08-10 Dali Systems Co. Ltd. Method and system for soft frequency reuse in a distributed antenna system
CN106549884A (zh) * 2015-12-31 2017-03-29 南方科技大学 信道估计方法和系统
CN107197464A (zh) * 2017-07-31 2017-09-22 广东工业大学 消除相邻小区对边缘用户干扰的频率资源分配方法及系统
CN108322240A (zh) * 2018-01-04 2018-07-24 南方科技大学 软频分复用方法及装置、大规模多天线系统和存储介质

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI: "Soft Frequency Reuse Scheme for UTRAN LTE", 3GPP TSG RAN WG1 MEETING #41 (DOC. NO. R1-050507), vol. 9-13, 5 May 2005 (2005-05-05), Athens, Greece, pages 1 - 6, XP050100202 *

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