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WO2018090342A1 - 一种天线系统、一种虚拟天线端口的映射方法及装置 - Google Patents

一种天线系统、一种虚拟天线端口的映射方法及装置 Download PDF

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Publication number
WO2018090342A1
WO2018090342A1 PCT/CN2016/106456 CN2016106456W WO2018090342A1 WO 2018090342 A1 WO2018090342 A1 WO 2018090342A1 CN 2016106456 W CN2016106456 W CN 2016106456W WO 2018090342 A1 WO2018090342 A1 WO 2018090342A1
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WO
WIPO (PCT)
Prior art keywords
antenna
port
module
physical
virtual
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/106456
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English (en)
French (fr)
Inventor
董伟
谢铂云
张晓天
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to JP2019526509A priority Critical patent/JP2019536368A/ja
Priority to PCT/CN2016/106456 priority patent/WO2018090342A1/zh
Priority to CN201680090955.8A priority patent/CN109964369A/zh
Priority to KR1020197014979A priority patent/KR20190066074A/ko
Priority to EP16921862.5A priority patent/EP3528342A4/en
Publication of WO2018090342A1 publication Critical patent/WO2018090342A1/zh
Priority to US16/414,718 priority patent/US20190273542A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/24Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/24Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/26Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/28Combinations of substantially independent non-interacting antenna units or systems
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/001Crossed polarisation dual antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/02Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an antenna system, a method and a device for mapping a virtual antenna port.
  • the small base station has the characteristics of large capacity and high speed, which can increase the network capacity and increase the user's Internet access rate in the edge coverage area of the macro base station. It can also adapt to various backhaul networks, and the deployment is flexible and fast, which brings a better mobile broadband experience for users. .
  • the small base station implements network coverage through mode 1
  • the macro base station implements network coverage through mode 2.
  • the antenna system of the small base station includes an antenna array, and the antenna array includes six longitudinally arranged antenna elements, each antenna element consisting of one positive 45 degree polarization element and one A negative 45-degree polarization array element.
  • the six positive 45-degree polarization elements correspond to the physical antenna port 0, and the six negative 45-degree polarization array elements correspond to the physical antenna port 1.
  • the Base Band Unit (BBU) in the small base station maps virtual antenna port 0 (Port 0) and virtual antenna port 1 (Port 1) to physical antenna port 0 and physical antenna port by weight [1, 1], respectively. 1. By using the mapping, the antenna system generates a beam of a fixed shape to implement network coverage.
  • BBU Base Band Unit
  • the antenna system of the macro base station includes an antenna array, the antenna array includes two columns of antenna elements, and each column includes six longitudinally arranged antenna elements.
  • Each antenna element consists of a positive 45 degree polarization element and a negative 45 degree polarization element.
  • the six positive 45-degree polarization array elements of the first column antenna element correspond to the physical antenna port 0, and the six negative 45-degree polarization array elements of the first column antenna element correspond to the physical antenna port 1, and the second column antenna
  • the six positive 45 degree polarization elements of the array element correspond to the physical antenna port 2
  • the six negative 45 degree polarization array elements of the second column antenna element correspond to the physical antenna port 3.
  • the BBU in the macro base station maps virtual antenna port 0 (Port 0) to physical antenna port 0 and physical antenna port 1, and virtual antenna port 1 (Port 1) to physical antenna port 2 and physical antenna port 3, through which the antenna is made.
  • the system produces a beam of fixed shape for network coverage.
  • the first method can only be applied to the low-rise residential areas and street coverage scenes.
  • the main installation method is the installation of the street road poles.
  • the second method is applied to a wide coverage scenario where the building is not dense. Because the radio remote unit (Radio Remote Unit, RRU) and the antenna system of the macro base station are large in size and weight, they cannot be applied to low-rise residential areas and street coverage scenarios. .
  • RRU Radio Remote Unit
  • the antenna system of the first mode and the second mode the beam of the vertical dimension generated by the antenna system is fixed as a narrow beam. Therefore, neither mode 1 nor mode 2 can satisfy the mid-high layer coverage scenario.
  • Embodiments of the present invention provide an antenna system, a method and a device for mapping a virtual antenna port, to implement network coverage of a medium-rise building.
  • a first aspect provides an antenna system, including: at least one antenna module, the antenna module includes a first antenna array and a second antenna array that are vertically arranged; and at least one electrical control group that is in one-to-one correspondence with the at least one antenna module, The grouping includes a first electrical tones and a second electrical tones, and the first electrical tones in the corresponding electrical tones of each antenna module are coupled to the first antenna array in the antenna module for adjusting the first antenna in the antenna module The downtilt of the vertical lobe of the beam generated by the array, the second of the electrical tones corresponding to each antenna module The electrical modulation is coupled to the second antenna array in the antenna module for adjusting a downtilt of a vertical lobe of a beam generated by the second antenna array in the antenna module.
  • the antenna system provided by the first aspect includes at least two antenna arrays. Therefore, at least two beams can be generated, and the directions of the two beams can be controlled by electro-tuning, so that the two beams together form a wide beam of a vertical dimension. (or narrow beam) to achieve network coverage of high-rise buildings (or low-rise buildings).
  • the first antenna array in the antenna module includes N1 antenna elements arranged in a longitudinal direction
  • the second antenna array in the antenna module includes N2 antenna elements arranged in a longitudinal direction
  • each antenna element includes a positive 45 degree and a negative 45 degree polarization array element, wherein the positive 45 degree N1 polarization array elements of the first antenna array correspond to the third physical antenna port, and the first antenna array has a negative 45 degree N1 poles
  • the array element corresponds to the fourth physical antenna port
  • the N2 polarization array elements of the positive 45 degree of the second antenna array correspond to the first physical antenna port
  • the N2 polarization array elements of the negative 45 degree of the second antenna array correspond to the second
  • the physical antenna port, N1 and N2 are integers greater than zero.
  • a method for mapping a virtual antenna port comprising: a baseband processing unit BBU acquiring architectural information of an antenna system, the antenna system comprising at least one antenna module, the antenna module comprising a first antenna array and a second antenna arranged longitudinally Array, the downtilt angle of the vertical lobe of the beam generated by the first antenna array is the same as or different from the downtilt angle of the vertical lobe of the beam generated by the second antenna array; the BBU is virtualized according to the architecture information of the antenna system and the virtual antenna port of the BBU The antenna port is mapped to a physical antenna port in the antenna system.
  • the method provided by the second aspect may enable the antenna module to generate a composite beam by mapping the virtual antenna port and the physical antenna port, and the downtilt angle of the vertical lobes of the two beams generated by the two antenna arrays constituting the composite beam may be Different, so that the composite beam can be a wide beam in the vertical dimension, enabling network coverage of high-rise buildings.
  • the first antenna array in the antenna module includes N1 antenna elements arranged in a longitudinal direction
  • the second antenna array in the antenna module includes N2 antenna elements arranged in a longitudinal direction
  • each antenna element includes a positive 45 degree and a negative 45 degree polarization array element, wherein the positive 45 degree N1 polarization array elements of the first antenna array correspond to the third physical antenna port, and the first antenna array has a negative 45 degree N1 poles
  • the array element corresponds to the fourth physical antenna port
  • the N2 polarization array elements of the positive 45 degree of the second antenna array correspond to the first physical antenna port
  • the N2 polarization array elements of the negative 45 degree of the second antenna array correspond to the second
  • the physical antenna port, N1 and N2 are integers greater than zero.
  • the antenna system includes an antenna module, and the downtilt angle of the vertical lobe of the beam generated by the first antenna array in the antenna module is the same as the downtilt angle of the vertical lobe of the beam generated by the second antenna array,
  • the number of the virtual antenna ports is 2.
  • the BBU maps the virtual antenna ports to the physical antenna ports in the antenna system according to the architecture information of the antenna system and the virtual antenna ports of the BBU, including: the BBU will be the virtual antenna ports of the two virtual antenna ports.
  • the virtual antenna port 1 of the two virtual antenna ports is mapped to the antenna by the weight [1, 1] a second physical antenna port and a fourth physical antenna port in the module.
  • the combined beam of the antenna module is a narrow beam in the vertical dimension, which can cover the network of low-rise buildings and streets.
  • the antenna system includes an antenna module, and the downtilt angle of the vertical lobe of the beam generated by the first antenna array in the antenna module is different from the downtilt angle of the vertical lobe of the beam generated by the second antenna array,
  • the number of the virtual antenna ports is 2.
  • the BBU maps the virtual antenna ports to the physical antenna ports in the antenna system according to the architecture information of the antenna system and the virtual antenna ports of the BBU, including: the BBU will be the virtual antenna ports of the two virtual antenna ports.
  • the antenna port 1 is mapped to the second physical antenna port and the third physical antenna port in the antenna module by weights [1, -1].
  • the composite beam of the antenna module is a wide beam in the vertical dimension, which can cover the network of high-rise buildings.
  • the antenna system includes an antenna module, and the number of virtual antenna ports is 4.
  • the BBU maps the virtual antenna port to the physical antenna port in the antenna system according to the architecture information of the antenna system and the virtual antenna port of the BBU.
  • the BBU maps the virtual antenna port 0 of the 4 virtual antenna ports to the first physical antenna port of the antenna module, and maps the virtual antenna port 1 of the 4 virtual antenna ports to the second physical antenna of the antenna module.
  • the port maps the virtual antenna port 2 of the 4 virtual antenna ports to the third physical antenna port of the antenna module, and maps the virtual antenna port 3 of the 4 virtual antenna ports to the fourth physical antenna port of the antenna module.
  • the combined beam of the antenna module is a narrow beam in the vertical dimension, and the narrow beam Network coverage can be applied to low-rise buildings and streets.
  • the combined beam of the antenna module is a wide beam in the vertical dimension. The wide beam can cover the network of high-rise buildings.
  • the antenna system includes two antenna modules, the first antenna array of each antenna module generates a downtilt of the vertical lobe of the beam and a vertical lobe of the beam generated by the second antenna array.
  • the dip angle is the same, and the number of the virtual antenna ports is 2.
  • the BBU maps the virtual antenna port to the physical antenna port in the antenna system according to the architecture information of the antenna system and the virtual antenna port of the BBU, including: the BBU will be in the two virtual antenna ports.
  • the virtual antenna port 0 is mapped to the first physical antenna port of the first antenna module of the two antenna modules, the third physical antenna port of the first antenna module, and the two antenna modules by using the weight [1, 1, 1, 1] First physical antenna port of the second antenna module
  • the virtual antenna port 1 of the two virtual antenna ports is mapped to the first antenna module of the two antenna modules by a weight [1, 1, 1, 1] a second physical antenna port, a fourth physical antenna port of the first antenna module, a second physical antenna port of the second antenna module of the two antenna modules, and a fourth physical antenna port of the second antenna module.
  • the combined beam of the first antenna module and the combined beam of the second antenna module are narrow beams in the vertical dimension, and the two narrow beams can cover the network of different low-rise buildings or streets.
  • the antenna system includes two antenna modules, the first antenna array of each antenna module generates a downtilt of the vertical lobe of the beam and a vertical lobe of the beam generated by the second antenna array.
  • the dip angle is different, and the number of the virtual antenna ports is 2.
  • the BBU maps the virtual antenna port to the physical antenna port in the antenna system according to the architecture information of the antenna system and the virtual antenna port of the BBU, including: the BBU will be in the two virtual antenna ports.
  • the virtual antenna port 0 is mapped to the first physical antenna port of the first antenna module of the two antenna modules, the fourth physical antenna port of the first antenna module, and the two antenna modules by weight [1, 1, 1, 1]
  • the first physical antenna port of the second antenna module and the fourth physical antenna port of the second antenna module pass the virtual antenna port 1 of the two virtual antenna ports by a weight [-1, 1, -1, 1] Mapping to a second physical antenna port of the first antenna module of the two antenna modules, a third physical antenna port of the first antenna module, a second physical antenna port of the second antenna module of the two antenna modules, and Two third physical antenna ports of the antenna module.
  • the composite beam of the first antenna module and the composite beam of the second antenna module are both wide beams in the vertical dimension, and the two wide beams can cover the network of different high-rise buildings.
  • the antenna system includes two antenna modules, and the first antenna array of the first antenna module of the two antenna modules generates a beam under the vertical lobe of the beam.
  • the tilt angle is different from the downtilt angle of the vertical lobe of the beam generated by the second antenna array, and the downtilt angle of the vertical lobe of the beam generated by the first antenna array in the second antenna module of the two antenna modules and the second antenna array are generated.
  • the vertical lobes of the beam have the same downtilt angle, and the number of virtual antenna ports is 2.
  • the BBU maps the virtual antenna port to the physical antenna port in the antenna system according to the architecture information of the antenna system and the virtual antenna port of the BBU, including: BBU Mapping the virtual antenna port 0 of the two virtual antenna ports to the first physical antenna port of the first antenna module of the two antenna modules by the weight [1, 1, 1, 1], and the fourth antenna module of the first antenna module
  • the physical antenna port, the first physical antenna port of the second antenna module of the two antenna modules, and the third physical antenna port of the second antenna module pass the virtual antenna port 1 of the two virtual antenna ports by a weight [-1] 1,1,1] mapping to a second physical antenna port of the first antenna module of the two antenna modules, a third physical antenna port of the first antenna module, and a second antenna module of the two antenna modules Fourth physical antenna ports of a second physical antenna ports and a second antenna module.
  • the composite beam of the first antenna module is a wide beam in a vertical dimension
  • the wide beam can cover the network of the high-rise building
  • the combined beam of the second antenna module is a narrow beam in the vertical dimension.
  • Narrow beams allow network coverage of low-rise buildings and streets.
  • the antenna system includes two antenna modules, and the number of virtual antenna ports is four.
  • the BBU maps the virtual antenna port to the physical antenna in the antenna system according to the architecture information of the antenna system and the virtual antenna port of the BBU.
  • the port includes: the BBU maps the virtual antenna port 0 of the four virtual antenna ports to the first physical antenna port and the two antenna modules of the first antenna module of the two antenna modules by using a weight [1, 1] a first physical antenna port of the second antenna module, the virtual antenna port 1 of the 4 virtual antenna ports is mapped to the second physical antenna port of the first antenna module of the 2 antenna modules by a weight [1, 1] a second physical antenna port of the second antenna module of the two antenna modules, and the virtual antenna port 2 of the four virtual antenna ports passes the weight [1, 1] mapping to a third physical antenna port of the first antenna module of the two antenna modules and a third physical antenna port of the second antenna module of the two antenna modules, and virtual antenna port 3 of the four virtual antenna ports
  • the combined beams generated by the two antenna modules are For narrow beams in the vertical dimension, the two narrow beams can be network covered for different low-rise buildings or streets.
  • the downtilt angles of the vertical lobes of the beams generated by the first antenna array and the second antenna array in each of the two antenna modules are different, the combined beams generated by the two antenna modules are all in the vertical dimension.
  • the wide beam, these two wide beams can cover the network of different high-rise buildings.
  • the combined beam generated by the antenna module is a narrow beam in a vertical dimension.
  • Network coverage may be performed on a low-rise building or a street, and when the first antenna array of the other antenna module of the two antenna modules and the vertical lobe of the beam generated by the second antenna array have different downtilts, the antenna module generates
  • the composite beam is a wide beam in the vertical dimension that allows for network coverage of tall buildings.
  • the method further includes The BBU performs phase difference compensation on the beam generated by the first antenna array in the antenna module and the beam generated by the second antenna array.
  • the beam generated by the first antenna array in the antenna module and the beam generated by the second antenna array are phase-compensated, including: the BBU sets a beam generated by the first antenna array in the antenna module.
  • Phase and second antenna array The phase of the generated beam, wherein the phase of the beam generated by the first antenna array in the antenna module is greater than the phase of the beam generated by the second antenna array in the antenna module by 360*sin((ET-1)*15/ 14.4/180* ⁇ )*330*Frq/300, wherein ET is a downtilt angle of a vertical lobe of a beam generated by the first antenna array and the second antenna array in the antenna module, and Frq is a transmission signal of the physical antenna port Frequency of.
  • a third aspect provides a BBU, including: an acquiring unit, configured to acquire architectural information of an antenna system, where the antenna system includes at least one antenna module, where the antenna module includes a first antenna array and a second antenna array that are vertically arranged, first The downtilt angle of the vertical lobe of the beam generated by the antenna array is the same as or different from the downtilt angle of the vertical lobe of the beam generated by the second antenna array; the processing unit is configured to be virtual according to the architecture information of the antenna system and the virtual antenna port of the BBU The antenna port is mapped to a physical antenna port in the antenna system.
  • the first antenna array in the antenna module includes N1 antenna elements arranged in a longitudinal direction
  • the second antenna array in the antenna module includes N2 antenna elements arranged in a longitudinal direction
  • each antenna element includes a positive 45 degree and a negative 45 degree polarization array element, wherein the positive 45 degree N1 polarization array elements of the first antenna array correspond to the third physical antenna port, and the first antenna array has a negative 45 degree N1 poles
  • the array element corresponds to the fourth physical antenna port
  • the N2 polarization array elements of the positive 45 degree of the second antenna array correspond to the first physical antenna port
  • the N2 polarization array elements of the negative 45 degree of the second antenna array correspond to the second
  • the physical antenna port, N1 and N2 are integers greater than zero.
  • the antenna system includes an antenna module, and the downtilt angle of the vertical lobe of the beam generated by the first antenna array in the antenna module is the same as the downtilt angle of the vertical lobe of the beam generated by the second antenna array,
  • the number of the virtual antenna ports is 2, and the processing unit is specifically configured to: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the first physical antenna port and the antenna module by using the weight [1, 1] Three physical antenna ports; pass the virtual antenna port 1 of the two virtual antenna ports through the weight [1, 1] Mapping to a second physical antenna port and a fourth physical antenna port in the antenna module.
  • the antenna system includes an antenna module, and the downtilt angle of the vertical lobe of the beam generated by the first antenna array in the antenna module is different from the downtilt angle of the vertical lobe of the beam generated by the second antenna array,
  • the number of the virtual antenna ports is 2, and the processing unit is specifically configured to: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the first physical antenna port and the antenna module by using the weight [1, 1] Four physical antenna ports; virtual antenna port 1 of the two virtual antenna ports are mapped to the second physical antenna port and the third physical antenna port in the antenna module by weight [1, -1].
  • the antenna system includes an antenna module, and the number of virtual antenna ports is 4, and the processing unit is specifically configured to: the BBU maps the virtual antenna port 0 of the four virtual antenna ports to the antenna module.
  • the first physical antenna port maps the virtual antenna port 1 of the 4 virtual antenna ports to the second physical antenna port of the antenna module, and maps the virtual antenna port 2 of the 4 virtual antenna ports to the third of the antenna modules.
  • the physical antenna port maps the virtual antenna port 3 of the 4 virtual antenna ports to the fourth physical antenna port of the antenna module.
  • the antenna system includes two antenna modules, the first antenna array of each antenna module generates a downtilt of the vertical lobe of the beam and a vertical lobe of the beam generated by the second antenna array.
  • the dip angle is the same
  • the number of virtual antenna ports is 2, and the processing unit is specifically configured to: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the two antenna modules by using the weight [1, 1, 1, 1] a first physical antenna port of the first antenna module, a third physical antenna port of the first antenna module, a first physical antenna port of the second antenna module of the two antenna modules, and a third physical antenna of the second antenna module Port, the virtual antenna port 1 of the two virtual antenna ports is mapped to the second physical antenna port of the first antenna module of the two antenna modules by using the weight [1, 1, 1, 1], and the first antenna module a fourth physical antenna port, a second physical antenna port of the second antenna module of the two antenna modules, and a fourth physical antenna port of the second antenna module.
  • the antenna system includes two antenna modules, the first antenna array of each antenna module generates a downtilt of the vertical lobe of the beam and a vertical lobe of the beam generated by the second antenna array.
  • the dip angle is different
  • the number of virtual antenna ports is 2
  • the processing unit is specifically configured to: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the two antenna modules by using the weight [1, 1, 1, 1] a first physical antenna port of the first antenna module, a fourth physical antenna port of the first antenna module, a first physical antenna port of the second antenna module of the two antenna modules, and a fourth physical antenna of the second antenna module Port, mapping the virtual antenna port 1 of the two virtual antenna ports to the second physical antenna port and the first antenna of the first antenna module of the two antenna modules by using a weight [-1, 1, -1, 1] a third physical antenna port of the module, a second physical antenna port of the second antenna module of the two antenna modules, and a third physical antenna port of the second antenna module.
  • the antenna system includes two antenna modules, a downtilt of a vertical lobe of a beam generated by a first antenna array of the first antenna module of the two antenna modules, and a beam generated by the second antenna array
  • the downtilt angle of the vertical lobe is different, the downtilt angle of the vertical lobe of the beam generated by the first antenna array in the second antenna module of the 2 antenna modules and the downtilt angle of the vertical lobe of the beam generated by the second antenna array
  • the number of virtual antenna ports is 2, and the processing unit is specifically configured to: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the two antenna modules by using the weight [1, 1, 1, 1] a first physical antenna port of the first antenna module, a fourth physical antenna port of the first antenna module, a first physical antenna port of the second antenna module of the two antenna modules, and a third physical antenna port of the second antenna module Mapping the virtual antenna port 1 of the two virtual antenna ports to the second physical antenna port of the first antenna module
  • the antenna system includes two antenna modules, a virtual antenna The number of ports is 4, and the processing unit is specifically configured to: the BBU maps the virtual antenna port 0 of the four virtual antenna ports by the weight [1, 1] to the first of the first antenna modules of the two antenna modules.
  • the physical antenna port and the first physical antenna port of the second antenna module of the two antenna modules, the virtual antenna port 1 of the four virtual antenna ports is mapped to the second of the two antenna modules by the weight [1, 1]
  • the second physical antenna port of one antenna module and the second physical antenna port of the second antenna module of the two antenna modules map virtual antenna port 2 of the four virtual antenna ports by weight [1, 1] to 2
  • the third physical antenna port of the first antenna module and the third physical antenna port of the second antenna module of the two antenna modules pass the virtual antenna port 3 of the four virtual antenna ports through the weight [1] 1] maps to a fourth physical antenna port of the first antenna module of the two antenna modules and a fourth physical antenna port of the second antenna module of the two antenna modules.
  • the processing unit when the downtilt angle of the vertical lobe of the beam generated by the first antenna array in one antenna module is the same as the downtilt angle of the vertical lobe of the beam generated by the second antenna array, the processing unit further And: performing phase difference compensation on a beam generated by the first antenna array in the antenna module and a beam generated by the second antenna array.
  • the processing unit is specifically configured to: set a phase of a beam generated by the first antenna array in the antenna module and a phase of a beam generated by the second antenna array, where the first one of the antenna modules
  • the phase of the beam generated by the antenna array is greater than the phase of the beam generated by the second antenna array in the antenna module by 360*sin((ET-1)*15/14.4/180* ⁇ )*330*Frq/300, where ET is the downtilt angle of the vertical lobe of the beam generated by the first antenna array and the second antenna array in the antenna module, and Frq is the frequency of the transmission signal of the physical antenna port.
  • a BBU including: a processor, a memory, a bus, and a communication interface; the memory is configured to store a computer to execute an instruction, the processor and the memory are connected by a bus, and the processor executes the instruction by a computer executing the memory storage, Implement any of the methods provided in the first aspect.
  • a computer storage medium for storing computer software instructions for use by the BBU, comprising a program designed to perform any of the methods provided by the first aspect above.
  • 1 is a schematic diagram of the composition of an antenna system in the prior art
  • FIG. 2 is a schematic diagram showing the composition of another antenna system in the prior art
  • FIG. 3 is a schematic structural diagram of a distributed base station according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a BBU according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an antenna system according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of still another antenna system according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a beam-covered low-rise building generated by an antenna module according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of a beam-covered high-rise building generated by an antenna module according to an embodiment of the present disclosure
  • FIG. 9 is a flowchart of a method for mapping a virtual antenna port according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of mapping between a virtual antenna port and a physical antenna port according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of mapping between a virtual antenna port and a physical antenna port according to an embodiment of the present disclosure
  • FIG. 12 is a schematic diagram of mapping between a virtual antenna port and a physical antenna port according to an embodiment of the present disclosure
  • FIG. 13 is a schematic diagram of mapping between a virtual antenna port and a physical antenna port according to an embodiment of the present disclosure
  • FIG. 14 is a schematic diagram of network coverage of different low-rise buildings by two antenna modules according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram of mapping between a virtual antenna port and a physical antenna port according to an embodiment of the present disclosure
  • FIG. 16 is a schematic diagram of network coverage of different high-rise buildings by two antenna modules according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of mapping between a virtual antenna port and a physical antenna port according to an embodiment of the present disclosure
  • FIG. 18 is a schematic diagram of network coverage of two high-rise buildings and low-rise buildings by two antenna modules according to an embodiment of the present invention.
  • FIG. 19 is a schematic diagram of mapping between a virtual antenna port and a physical antenna port according to an embodiment of the present disclosure
  • FIG. 20 is a schematic structural diagram of a BBU according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic structural diagram of still another BBU according to an embodiment of the present invention.
  • the "first” and “second” in the first antenna module and the second antenna module in the following description may be any antenna module, which is not specifically referred to herein, only to distinguish the difference between the two antenna modules. . Similarly, the “first” and “second” in the first antenna array and the second antenna array are also merely to distinguish the difference between the two antenna arrays. The “first”, “second”, “third” and “fourth” in the other descriptions are similar.
  • the distributed base station includes a BBU and an RRU connected to the BBU through an optical fiber.
  • the RRU is connected to the antenna system through a feeder, and the antenna system transmits (or receives) through the antenna.
  • Electromagnetic waves to send (or receive) information the BBU is used to complete the functions of baseband signal processing, transmission, main control and clock; the RRU is used to complete the filtering, signal amplification and up-conversion processing of the RF signal, and the digital intermediate frequency technology is used to realize the analog signal from the intermediate frequency to the baseband digital signal. Conversion.
  • the RRU can be integrated with the antenna system to form an Active Antenna Unit (AAU) to meet the basic requirements of the base station site, which is available anywhere, and is environmentally friendly and easy to deploy.
  • AAU Active Antenna Unit
  • the BBU generally includes a control system, a power supply and an environmental monitoring system connected to the control system, a transmission system and a baseband system connected to the control system, the power supply, and the environmental monitoring system, wherein the control system is used for Centralized management of the entire distributed base station, including operation and maintenance and signaling processing, and provides the system clock; power and environmental monitoring systems for power conversion and external monitoring interface; transmission system for transmission control system and power and environmental monitoring The information exchanged between the systems; the baseband system is used to complete the uplink and downlink data baseband processing functions.
  • an antenna system including:
  • At least one antenna module 50 includes a first antenna array 501 and a second antenna array 502 arranged in a longitudinal direction;
  • At least one electrical group 50' corresponding to the at least one antenna module 50 includes a first electrical modulo 501' and a second electrical modulo 502', and each antenna module 50 corresponds to
  • the first electrical modulo 501 ′ in the electrical modulation group 50 ′ is connected to the first antenna array 501 in the antenna module 50 for adjusting the vertical lobes of the beam generated by the first antenna array 501 in the antenna module 50 .
  • the second electrical modulo 502' in the corresponding electrical modulation group 50' of each antenna module 50 is connected to the second antenna array 502 in the antenna module 50 Connected to adjust the downtilt of the vertical lobe of the beam generated by the second antenna array 502 in the antenna module 50.
  • the ESC in the ESC group corresponding to one antenna module can adjust the downtilt angle of the vertical lobe of the beam generated by the two antenna arrays in the antenna module, and the downtilt angle of the vertical lobe of the beam refers to the direction of the beam.
  • the angle with the horizontal line so that the directions of the beams generated by the two antenna arrays can be adjusted, so that the beams generated by the two antenna arrays together form a wide beam of a vertical dimension or a narrow beam of a vertical dimension.
  • a beam formed by two beams generated by two antenna arrays in one antenna module is hereinafter referred to as a "composite beam" of the antenna module.
  • the combined beam of the antenna module is a narrow beam of a vertical dimension
  • the combined beam of the antenna module is a wide beam of vertical dimension, wherein the difference between the downtilt angles of the vertical lobes of the beams generated by the two antenna arrays The larger the value, the wider the width of the composite beam in the vertical dimension.
  • the first antenna array in the antenna module includes N1 antenna elements arranged in a longitudinal direction
  • the second antenna array in the antenna module includes N2 antenna elements arranged in a longitudinal direction
  • each antenna array The element includes a positive 45 degree and a negative 45 degree polarization element, wherein the positive 45 degree N1 polarization elements of the first antenna array correspond to the third physical antenna port, and the first antenna array has a negative 45 degree N1
  • the polarized array elements correspond to the fourth physical antenna port
  • the N2 polarized array elements of the positive 45 degrees of the second antenna array correspond to the first physical antenna port
  • the N2 polarized array elements of the negative 45 degrees of the second antenna array correspond to
  • the second physical antenna port, N1 and N2 are integers greater than zero.
  • N1 and N2 are generally an even number greater than zero.
  • each antenna module in the antenna system is connected to the RRU in the base station,
  • the number of antenna modules in the line system is generally set to one or two.
  • the antenna system includes four physical antenna ports, which is higher than the physical system in the antenna system shown in FIG. 1 (that is, the antenna system provided in the first mode in the prior art).
  • the number of antenna ports is large.
  • the antenna system provided by the embodiment of the present invention can meet the higher capacity requirements of the network system than the antenna system shown in FIG.
  • the antenna system includes eight physical antenna ports, which are different from the antenna system shown in FIG. 1 and the antenna system shown in FIG. 2 (ie, the second method in the prior art).
  • the number of physical antenna ports in the provided antenna system is large. In this case, the antenna system provided by the embodiment of the present invention can satisfy the network system higher than the antenna system shown in FIG. 1 and the antenna system shown in FIG. Capacity requirements.
  • the antenna module When an antenna module is included in the antenna system, for example, as shown in FIGS. 7 and 8, the antenna module is supported by a rod (eg, a pole), and beam 1 represents a beam generated by the first antenna array in the antenna module.
  • is the downtilt angle of the vertical lobe of beam 1
  • beam 2 represents the beam generated by the second antenna array in the antenna module
  • is the downtilt angle of the vertical lobe of beam 2 as shown in Fig. 7, when ⁇ and When ⁇ is the same, the combined beam of the antenna module is a narrow beam of vertical dimension, and the narrow beam can be used for network coverage of low-rise buildings and streets, as shown in FIG. 8 , when ⁇ and ⁇ are different, the antenna module
  • the composite beam is a wide beam of vertical dimension that can be used for network coverage of tall buildings.
  • the antenna system provided by the embodiment of the present invention includes at least two antenna arrays. Therefore, at least two beams can be generated, and the directions of the two beams can be controlled by ESC, so that the two beams form a vertical dimension. Beam (or narrow beam) for network coverage of tall buildings (or low-rise buildings).
  • the embodiment of the present invention further provides a mapping method of a virtual antenna port, as shown in FIG. 9, including:
  • the BBU obtains architecture information of the antenna system.
  • the antenna system comprises at least one antenna module
  • the antenna module comprises a first antenna array and a second antenna array arranged longitudinally, the downtilt angle of the vertical lobe of the beam generated by the first antenna array is perpendicular to the beam generated by the second antenna array
  • the downtilt angles of the lobes are the same or different.
  • the method provided by this embodiment can be specifically performed by a baseband system in the BBU.
  • the architecture information of the antenna system may include any information related to the antenna system, for example, the number of antenna modules included in the antenna system, the number and arrangement of the antenna arrays included in the antenna module, and the antenna included in the antenna array.
  • the number of array elements and the arrangement, the number of physical antenna ports, and the correspondence between physical antenna ports and polarization elements may include any information related to the antenna system, for example, the number of antenna modules included in the antenna system, the number and arrangement of the antenna arrays included in the antenna module, and the antenna included in the antenna array.
  • the architecture information of the antenna system can be directly reported to the BBU by the AAU.
  • the architecture information of the antenna system can be reported by the antenna system to the RRU. Report to the BBU.
  • the antenna system may include at least one electrical tuning group corresponding to the at least one antenna module, where the electrical tuning group includes a first electrical tones and a second electrical tones, and the first electrical power in each of the corresponding electrical tones of the antenna modules And a first antenna array connected to the antenna module, configured to adjust a downtilt angle of a vertical lobe of a beam generated by the first antenna array in the antenna module, and a second electric power in the corresponding electrical control group of each antenna module
  • the second antenna array is coupled to the antenna module for adjusting a downtilt angle of a vertical lobe of a beam generated by the second antenna array in the antenna module. Therefore, the downtilt angle of the vertical lobe of the beam generated by the first antenna array and the beam generated by the second antenna array can be made by electrical adjustment
  • the downtilt angles of the lobes are the same or different.
  • the BBU maps the virtual antenna port to the physical antenna port in the antenna system according to the architecture information of the antenna system and the virtual antenna port of the BBU.
  • the BBU can map the virtual antenna port to the physical antenna port by using a virtual antenna mapping (VAM) algorithm.
  • VAM virtual antenna mapping
  • each antenna module in the antenna system is made by mapping the virtual antenna port to the physical antenna port
  • a composite beam having a certain shape, a certain beam width, and a certain antenna gain can be generated to meet the application requirements of different scenarios.
  • the downtilt angle of the vertical lobe of the beam generated by the antenna array can be adjusted by adjusting the electrical tone corresponding to the antenna array.
  • the method provided by the embodiment of the present invention may enable the antenna module to generate a composite beam by mapping the virtual antenna port and the physical antenna port, and the downtilt angle of the vertical lobes of the two beams generated by the two antenna arrays constituting the composite beam.
  • the difference can be such that the composite beam can be a wide beam in the vertical dimension, enabling network coverage of tall buildings.
  • the first antenna array in the antenna module comprises N1 antenna elements arranged in a longitudinal direction
  • the second antenna array in the antenna module comprises N2 antenna elements arranged in a longitudinal direction, each antenna element comprising a positive 45 degree And a negative 45 degree polarization element, wherein a positive 45 degree N1 polarization element of the first antenna array corresponds to a third physical antenna port, and a negative 45 degree N1 polarization element of the first antenna array corresponds to a fourth physical antenna port
  • the N2 polarization array elements of the positive 45 degree of the second antenna array correspond to the first physical antenna port
  • the N2 polarization array elements of the negative 45 degree of the second antenna array correspond to the second physical antenna port
  • Both N1 and N2 are integers greater than zero.
  • step 902 Different ways, the following describes different cases separately.
  • the antenna system includes an antenna module.
  • the first antenna array in the antenna module and the second antenna array generate the same vertical lobe of the beam, and the number of virtual antenna ports is 2.
  • the step 902 may be: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the first physical antenna port and the third physical antenna port in the antenna module by using a weight [1, 1]; The virtual antenna port 1 of the 2 virtual antenna ports is mapped to the second physical antenna port and the fourth physical antenna port in the antenna module by a weight [1, 1].
  • the first physical antenna port is denoted as T/R0
  • the second physical antenna port is denoted as T/R1
  • the third physical antenna port is denoted as T/R2
  • the fourth physical antenna port is recorded. Recorded as T/R3, virtual antenna port 0 is Port0, virtual antenna port 1 is Port1, virtual antenna port 2 mentioned below is Port2, and virtual antenna port 3 is Port3.
  • FIG. 10 shows a schematic diagram of mapping between a virtual antenna port and a physical antenna port in the case where the BBU maps Port 0 to T/R0 and T by weight [1, 1]. /R2, Port1 maps to T/R1 and T/R3 by weight [1,1].
  • the combined beam of the antenna module is a narrow beam similar to that shown in Figure 7 in the vertical dimension, which can cover the network of low-rise buildings and streets.
  • the antenna system includes an antenna module.
  • the first antenna array and the second antenna array have different vertical lobes of the beam generated by the second antenna array, and the number of virtual antenna ports is 2.
  • the step 902 may be: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the first physical antenna port and the fourth physical antenna port in the antenna module by using a weight [1, 1]; The virtual antenna port 1 of the 2 virtual antenna ports is mapped to the second physical antenna port and the third physical antenna port in the antenna module by a weight [1, -1].
  • FIG. 11 shows a schematic diagram of mapping between a virtual antenna port and a physical antenna port in case 2, wherein the BBU maps Port0 through the weight [1, 1] to T/R0 and T/R3, Port1 is mapped to T/R1 and T/R2 by weight [1, -1].
  • the composite beam of the antenna module is a wide beam similar to that shown in FIG. 8 in the vertical dimension, which can cover the network of high-rise buildings.
  • Case 3 The antenna system includes an antenna module, and the number of virtual antenna ports is 4.
  • the step 902 may be: the BBU maps the virtual antenna port 0 of the 4 virtual antenna ports to the first physical antenna port of the antenna module, and maps the virtual antenna port 1 of the 4 virtual antenna ports to the specific implementation. a second physical antenna port of the antenna module, mapping virtual antenna port 2 of the 4 virtual antenna ports to a third physical antenna port of the antenna module, and virtual antenna port 3 of the 4 virtual antenna ports Mapping to a fourth physical antenna port in the antenna module.
  • FIG. 12 shows a schematic diagram of mapping between a virtual antenna port and a physical antenna port in case three, wherein the BBU maps Port0 to T/R0 and Port2 to T/R1. Map Port1 to T/R2 and Port3 to T/R3.
  • the combined beam of the antenna module is a narrow beam similar to that shown in FIG. 7 in the vertical dimension.
  • the narrow beam can cover the low-rise buildings and the streets, when the first antenna array and the second antenna array in the antenna module are produced
  • the combined beam of the antenna module is a wide beam similar to that shown in FIG. 8 in the vertical dimension, which can cover the network of the high-rise building.
  • the antenna system includes two antenna modules, and the first antenna array and the second antenna array in each antenna module generate the same vertical lobes of the beams, and the number of virtual antenna ports is 2.
  • the BBU may: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the first antenna module of the two antenna modules by using a weight [1, 1, 1, 1] a physical antenna port, a third physical antenna port of the first antenna module, a first physical antenna port of a second antenna module of the two antenna modules, and a third physical antenna port of the second antenna module, Mapping the virtual antenna port 1 of the two virtual antenna ports to the second physical antenna port of the first antenna module of the two antenna modules by using a weight [1, 1, 1, 1], the first antenna a fourth physical antenna port of the module, a second physical antenna port of the second antenna module of the two antenna modules, and a fourth physical antenna port of the second antenna module.
  • FIG. 13 shows a schematic diagram of mapping between a virtual antenna port and a physical antenna port in case four, wherein the BBU maps Port0 through a weight [1, 1, 1, 1] to T/R0 and T/R2 of the first antenna module and T/R0 and T/R2 of the second antenna module map Port1 to the T/R1 of the first antenna module by weight [1, 1, 1, 1] And T/R3 and T/R1 and T/R3 of the second antenna module.
  • the combined beam of the first antenna module and the combined beam of the second antenna module are narrow beams in a vertical dimension, and the two narrow beams can be networked on different low-rise buildings or streets. cover.
  • the antenna system includes two antenna modules, and the vertical lobes of the beams generated by the first antenna array and the second antenna array in each antenna module have different downtilt angles, and the number of virtual antenna ports is 2.
  • the BBU may: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the first antenna module of the two antenna modules by using a weight [1, 1, 1, 1] a physical antenna port, a fourth physical antenna port of the first antenna module, a first physical antenna port of a second antenna module of the two antenna modules, and a fourth physical antenna port of the second antenna module, Mapping the virtual antenna port 1 of the two virtual antenna ports to the second physical antenna port of the first antenna module of the two antenna modules by using a weight [-1, 1, -1, 1], the first a third physical antenna port of an antenna module, a second physical antenna port of the second antenna module of the two antenna modules, and a third physical antenna port of the second antenna module.
  • FIG. 15 shows a schematic diagram of mapping between a virtual antenna port and a physical antenna port in case 5, wherein the BBU maps Port0 through a weight [1, 1, 1, 1] to T/R0 and T/R3 of the first antenna module and T/R0 and T/R3 of the second antenna module map Port1 through the weight [-1, 1, -1, 1] to the T of the first antenna module /R1 and T/R2 and T/R1 and T/R2 of the second antenna module.
  • the composite beam of the first antenna module and the composite beam of the second antenna module are both wide beams in the vertical dimension, and the two wide beams can cover the network of different high-rise buildings.
  • the antenna system includes two antenna modules, and the first antenna array of the first antenna module and the second antenna array of the second antenna module have different downtilts of vertical lobes of the beam, and are in the two antenna modules.
  • the vertical lobes of the beams generated by the first antenna array and the second antenna array in the second antenna module have the same downtilt angle, and the number of virtual antenna ports is 2.
  • the BBU may: the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the first antenna module of the two antenna modules by using a weight [1, 1, 1, 1] a physical antenna port, a fourth physical antenna port of the first antenna module, and a first physical antenna end of a second antenna module of the two antenna modules Port and the third physical antenna port of the second antenna module, mapping the virtual antenna port 1 of the two virtual antenna ports to the two antenna modules by using a weight [-1, 1, 1, 1] a second physical antenna port of the first antenna module, a third physical antenna port of the first antenna module, a second physical antenna port of the second antenna module of the two antenna modules, and the second antenna module The fourth physical antenna port.
  • FIG. 17 shows a schematic diagram of mapping between a virtual antenna port and a physical antenna port in case 6, wherein the BBU maps Port0 through a weight [1, 1, 1, 1] to T/R0 and T/R3 of the first antenna module and T/R0 and T/R2 of the second antenna module map Port1 to the T/ of the first antenna module by weight [-1, 1, 1, 1] R1 and T/R2 and T/R1 and T/R3 of the second antenna module.
  • the composite beam of the first antenna module is a wide beam in a vertical dimension
  • the wide beam can cover the network of the high-rise building
  • the combined beam of the second antenna module is in the vertical dimension.
  • Case 7 The antenna system includes 2 antenna modules, and the number of virtual antenna ports is 4.
  • the BBU may: the BBU maps the virtual antenna port 0 of the four virtual antenna ports to the first physical antenna port of the first antenna module of the two antenna modules by using a weight [1, 1]. Mapping the virtual antenna port 1 of the four virtual antenna ports to the two antenna modules by using a weight [1, 1] and a first physical antenna port of the second antenna module of the two antenna modules The second physical antenna port of the first antenna module and the second physical antenna port of the second antenna module of the two antenna modules pass the virtual antenna port 2 of the four virtual antenna ports by a weight [1, 1] Mapping a third physical antenna port of the first antenna module of the two antenna modules and a third physical antenna port of the second antenna module of the two antenna modules, and virtual antennas of the four virtual antenna ports The port 3 is mapped to the fourth physical antenna port of the first antenna module and the second of the two antenna modules by using a weight [1, 1] The fourth physical antenna port of the two antenna modules.
  • FIG. 19 shows a schematic diagram of mapping between a virtual antenna port and a physical antenna port in case 7, wherein the BBU maps Port0 through the weight [1, 1] to the first antenna module.
  • T/R0 and T/R0 of the second antenna module Port1 is mapped to the T/R2 of the first antenna module and the T/R2 of the second antenna module by the weight [1, 1], and the Port2 passes the weight [ 1,1] mapping to T/R1 of the first antenna module and T/R1 of the second antenna module, mapping Port3 to the T/R3 of the first antenna module and the second antenna module by the weight [1, 1] T/R3.
  • the combined beams generated by the two antenna modules are all A narrow beam in the vertical dimension, which can cover the network of different low-rise buildings or streets. See Figure 14 for details.
  • the combined beams generated by the two antenna modules are all in the vertical dimension.
  • the wide beam, these two wide beams can cover the network of different high-rise buildings, as shown in Figure 16.
  • the combined beam generated by the antenna module is a narrow beam in a vertical dimension.
  • Network coverage may be performed on a low-rise building or a street, and when the first antenna array of the other antenna module of the two antenna modules and the vertical lobe of the beam generated by the second antenna array have different downtilts, the antenna module generates
  • the composite beam is a wide beam in the vertical dimension, which can cover the network of high-rise buildings. See Figure 18 for details.
  • the beams generated by the first antenna array and the second antenna array in one antenna module do not generate coherent superposition, thereby causing the antenna module to generate Synthetic beam Has a better coverage.
  • the method further The method includes: the BBU performs phase difference compensation on the beam generated by the first antenna array in the antenna module and the beam generated by the second antenna array. By compensating for the phase difference, the synthesis effect of the beams generated by the two antenna arrays in the antenna module can be improved.
  • the specific compensation method may be: setting a phase of a beam generated by the first antenna array in the antenna module and a phase of a beam generated by the second antenna array, wherein a phase of a beam generated by the first antenna array in the antenna module is The phase of the beam generated by the second antenna array in the antenna module is 360*sin((ET-1)*15/14.4/180* ⁇ )*330*Frq/300, where ET is the first in the antenna module The downtilt angle of the vertical lobe of the beam generated by the antenna array and the second antenna array, and Frq is the frequency of the transmitted signal of the physical antenna port, where "*" means "multiplication".
  • the beam 1 generated by the first antenna array and The beams 2 generated by the second antenna array together form a narrow beam of vertical dimension, and there is a phase difference between beam 1 and beam 2.
  • the BBU needs to be between beam 1 and beam 2.
  • the phase difference is compensated.
  • the phase of the beam generated by the first antenna array is greater than the phase of the beam generated by the second antenna array by 360*sin((ET-1)*15/14.4/180* ⁇ )* 330*Frq/300 implementation.
  • the downtilt angle of the vertical lobe of the beam generated by the first antenna array and the vertical lobe of the beam generated by the second antenna array are 15 degrees, and the frequency of the transmitted signal of the physical antenna port is 2.2 GHz.
  • the phase of the beam generated by the first antenna array may be set to 0, and the phase of the beam generated by the second antenna array may be set to -219.3576 degrees.
  • two beams generated by one antenna module may cover one 4-channel cell, or may cover two inter-frequency 2-channel cells.
  • the network coverage in different scenarios can be effectively improved by using the narrow-beam and wide-beam beams of the vertical dimension generated by the antenna system in the embodiment of the present invention.
  • Table 1 shows that the AAU obtained by simulation is EM1.0 (EasyMacro1). .0) and EM2.0 (EasyMacro2.0) increase in network throughput in different scenarios.
  • the EM1.0 adopts the first method in the prior art to implement network coverage.
  • the AAU obtained by the integrated configuration of the RRU and the antenna system in the present invention is denoted as EM2.0.
  • EM2.0-SU indicates a single-user scenario
  • EM2.0-MU indicates a multi-user scenario
  • DL indicates downlink
  • UL indicates uplink
  • scenario 1 is a coverage scene of a street and a 1-2-story building along the street. 200 meters in the street, 4-8 floors covering the scene
  • scene 3 is the middle and high-rise buildings (60 meters high) covering the scene, as can be seen from Table 1, the street station scene (including scene 1 and scene 2), EM2. 0
  • the average downlink throughput increased by 8%-12%
  • the downlink edge throughput increased by 16%-24%
  • the uplink average throughput increased by 40%-45%
  • the uplink edge throughput increased by 60%-82%.
  • the BBU includes corresponding hardware structures and/or software elements for performing the various steps in the method.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein.
  • the specific implementation of hardware or computer software to drive hardware depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • the embodiment of the present invention may perform the division of functional units on the BBU according to the foregoing method embodiment.
  • each functional unit may be divided corresponding to each method step, or two or more functional units may be integrated into one processing unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 20 shows a schematic diagram of a composition of a BBU 20, including:
  • the acquiring unit 2001 is configured to acquire architecture information of the antenna system, where the antenna system includes at least one antenna module, where the antenna module includes a first antenna array and a second antenna array that are vertically arranged, and the first antenna array generates a beam under the vertical lobes
  • the tilt angle is the same as or different from the downtilt angle of the vertical lobe of the beam generated by the second antenna array;
  • the processing unit 2002 is configured to map the virtual antenna port to the physical antenna port in the antenna system according to the architecture information of the antenna system and the virtual antenna port of the BBU.
  • the first antenna array in the antenna module comprises N1 antenna elements arranged in a longitudinal direction
  • the second antenna array in the antenna module comprises N2 antenna elements arranged in a longitudinal direction, each antenna element comprising a positive 45 degree And a negative 45 degree polarization element, wherein a positive 45 degree N1 polarization element of the first antenna array corresponds to a third physical antenna port, and a negative 45 degree N1 polarization element of the first antenna array corresponds to a fourth physical antenna port
  • the N2 polarization array elements of the positive 45 degree of the second antenna array correspond to the first physical antenna port
  • the N2 polarization array elements of the negative 45 degree of the second antenna array correspond to the second physical antenna port
  • Both N1 and N2 are integers greater than zero.
  • the antenna system includes an antenna module.
  • the downtilt angle of the vertical lobe of the beam generated by the first antenna array in the antenna module is the same as the downtilt angle of the vertical lobe of the beam generated by the second antenna array, and the virtual antenna port is The number is 2, and the processing unit 2002 is specifically used to:
  • the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the first physical antenna port and the third physical antenna port in the antenna module by the weight [1, 1]; the virtual antenna port of the two virtual antenna ports 1 is mapped to the second physical antenna port and the fourth physical antenna port in the antenna module by a weight [1, 1].
  • the antenna system includes an antenna module, wherein a downtilt angle of a vertical lobe of the beam generated by the first antenna array in the antenna module is different from a downtilt angle of a vertical lobe of the beam generated by the second antenna array, and the virtual antenna port is different
  • the number is 2, and the processing unit 2002 is specifically used to:
  • the BBU maps the virtual antenna port 0 of the two virtual antenna ports to the first physical antenna port and the fourth physical antenna port in the antenna module by the weight [1, 1]; the virtual antenna port of the two virtual antenna ports 1 is mapped to the second physical antenna port and the third physical antenna port in the antenna module by a weight [1, -1].
  • the antenna system includes an antenna module, and the number of the virtual antenna ports is 4.
  • the processing unit 2002 is specifically configured to:
  • the BBU maps the virtual antenna port 0 of the 4 virtual antenna ports to the first physical antenna port of the antenna module, and maps the virtual antenna port 1 of the 4 virtual antenna ports to the second physical antenna port of the antenna module, The virtual antenna port 2 of the 4 virtual antenna ports is mapped to the third physical antenna port of the antenna module, and the virtual antenna port 3 of the 4 virtual antenna ports is mapped to the fourth physical antenna port of the antenna module.
  • the antenna system includes two antenna modules, and a downtilt angle of a vertical lobe of a beam generated by the first antenna array in each antenna module is the same as a downtilt angle of a vertical lobe of a beam generated by the second antenna array, and is virtual
  • the number of antenna ports is 2, and the processing unit 2002 is specifically configured to:
  • the BBU maps the virtual antenna port 0 of the two virtual antenna ports by the weight [1, 1, 1, 1] to the first physical antenna port of the first antenna module of the two antenna modules, and the first antenna module.
  • the third physical antenna port, the first physical antenna port of the second antenna module of the two antenna modules, and the third physical antenna port of the second antenna module pass the virtual antenna port 1 of the two virtual antenna ports by a weight [1] ,1,1,1] mapping to a second physical antenna port of the first antenna module of the two antenna modules, a fourth physical antenna port of the first antenna module, and a second of the second antenna module of the two antenna modules a physical antenna port and a fourth physical antenna port of the second antenna module.
  • the antenna system includes two antenna modules, wherein a downtilt angle of a vertical lobe of a beam generated by the first antenna array in each antenna module is different from a downtilt angle of a vertical lobe of a beam generated by the second antenna array, and virtual The number of antenna ports is 2, and the processing unit 2002 is specifically configured to:
  • the BBU maps the virtual antenna port 0 of the two virtual antenna ports by the weight [1, 1, 1, 1] to the first physical antenna port of the first antenna module of the two antenna modules, and the first antenna module.
  • the virtual antenna port 1 in the virtual antenna port is mapped to the second physical antenna port of the first antenna module of the two antenna modules by the weight [-1, 1, -1, 1], and the third physical of the first antenna module
  • the antenna system includes two antenna modules, a downtilt angle of a vertical lobe of a beam generated by the first antenna array in the first antenna module of the two antenna modules, and a vertical lobe of a beam generated by the second antenna array
  • the downtilt angle is different, the downtilt angle of the vertical lobe of the beam generated by the first antenna array in the second antenna module of the two antenna modules is the same as the downtilt angle of the vertical lobe of the beam generated by the second antenna array, and the virtual antenna
  • the number of ports is 2, and the processing unit 2002 is specifically configured to:
  • the BBU maps the virtual antenna port 0 of the two virtual antenna ports by the weight [1, 1, 1, 1] to the first physical antenna port of the first antenna module of the two antenna modules, and the first antenna module.
  • Four physical antenna ports, a first physical antenna port of the second antenna module of the two antenna modules, and a third physical antenna port of the second antenna module, and the virtual antenna port 1 of the two virtual antenna ports passes the weight [- 1,1,1,1] mapping to a second physical antenna port of the first antenna module of the two antenna modules, a third physical antenna port of the first antenna module, and a second antenna module of the two antenna modules
  • the antenna system includes two antenna modules, and the number of virtual antenna ports is four, and the processing unit 2002 is specifically configured to:
  • the BBU maps the virtual antenna port 0 of the four virtual antenna ports to the first physical antenna port of the first antenna module and the second antenna module of the two antenna modules by using the weight [1, 1]
  • the first physical antenna port, the virtual antenna port 1 of the 4 virtual antenna ports is mapped to the second physical antenna port and the 2 antenna modules of the first antenna module of the 2 antenna modules by the weight [1, 1] a second physical antenna port of the second antenna module, connecting the virtual antenna port 2 of the four virtual antenna ports
  • the weighted value [1,1] is mapped to the third physical antenna port of the first antenna module of the two antenna modules and the third physical antenna port of the second antenna module of the two antenna modules, and the four virtual antenna ports are
  • the virtual antenna port 3 in the middle is mapped to the fourth physical antenna port of the first antenna module of the two antenna modules and the fourth physical antenna port of the second antenna module of the two antenna modules by the weight [1, 1].
  • the processing unit 2002 is further configured to:
  • Phase difference compensation is performed on the beam generated by the first antenna array in the antenna module and the beam generated by the second antenna array.
  • processing unit 2002 is specifically configured to:
  • phase of a beam generated by the first antenna array in the antenna module and a phase of a beam generated by the second antenna array, wherein a phase of a beam generated by the first antenna array in the antenna module is greater than a second phase in the antenna module
  • the phase of the beam generated by the antenna array is 360*sin((ET-1)*15/14.4/180* ⁇ )*330*Frq/300, where ET is the first antenna array and the second antenna in the antenna module.
  • the downtilt of the vertical lobe of the beam produced by the array, and Frq is the frequency of the transmitted signal of the physical antenna port.
  • Each unit in the BBU 20 is used to perform the foregoing method. Therefore, the beneficial effects of the BBU 20 can be seen in the beneficial effects of the foregoing method, and details are not described herein again.
  • Each of the above units may refer to an application-specific integrated circuit (ASIC) circuit, a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the above functionality.
  • ASIC application-specific integrated circuit
  • the obtaining unit 2001 can be executed through a communication interface or a receiver, and the processing unit 2002 can be executed by a processor.
  • the above method can be implemented by using the BBU 21 as shown in FIG. 21, and the BBU 21 includes a processor 2101, a memory 2102, a bus 2103, and a communication interface 2104.
  • the processor 2101 can be a general processing unit (CPU), a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the present invention.
  • CPU general processing unit
  • ASIC application specific integrated circuit
  • the memory 2102 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or a device that can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • Other types of dynamic storage devices may also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical discs.
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • Storage optical storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures And any other medium that can be accessed by a computer, but is not limited thereto.
  • Communication interface 2104 can be a device such as a transceiver for communicating with other devices.
  • the processor 2101, the memory 2102, and the communication interface 2104 are connected by a bus 2103, which may include a path for transferring information between the processor 2101, the memory 2102, and the communication interface 2104.
  • the memory 2102 can exist independently and is coupled to the processor 2101 via a bus 2103.
  • the memory 2102 can also be integrated with the processor 2101.
  • the bus 2103 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 21, but it does not mean that there is only one bus or one type of bus.
  • the memory 2102 is configured to store computer execution instructions, and the processor 2101 executes instructions by executing a computer stored in the memory 2102 to perform the following actions:
  • the antenna system includes at least one antenna module, the antenna module includes a first antenna array and a second antenna array arranged longitudinally, a downtilt angle of a vertical lobe of the beam generated by the first antenna array, and a second antenna array
  • the downward lobes of the vertical lobes of the resulting beam are the same or different;
  • the virtual antenna port is mapped to the physical antenna port in the antenna system according to the architectural information of the antenna system and the virtual antenna port of the BBU.
  • the processor 2101 can also perform other steps in the above methods by executing computer executed instructions stored in the memory 2102. For details, refer to the above method, and details are not described herein again.
  • Each device in the BBU 21 is used to perform the above method. Therefore, the beneficial effects of the BBU 21 can be seen in the beneficial effects of the foregoing method, and details are not described herein again.
  • the embodiment of the present invention further provides a computer storage medium for storing computer software instructions used by the BBU, which includes a program designed to execute the foregoing method embodiments.
  • the mapping method of the virtual antenna port can be realized by executing the stored program.
  • embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program is stored/distributed in a suitable medium, provided with other hardware or as part of the hardware, or in other distributed forms, such as over the Internet or other wired or wireless telecommunication systems.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明实施例公开了一种天线系统、一种虚拟天线端口的映射方法及装置,涉及通信技术领域,用以实现对中高层建筑进行网络覆盖。该天线系统包括:至少一个天线模块,天线模块包括纵向排列的第一天线阵列和第二天线阵列;与至少一个天线模块一一对应的至少一个电调组,电调组包括第一电调和第二电调,每个天线模块对应的电调组中的第一电调与该天线模块中的第一天线阵列连接,用于调整该天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角,每个天线模块对应的电调组中的第二电调与该天线模块中的第二天线阵列连接,用于调整该天线模块中的第二天线阵列产生的波束的垂直波瓣的下倾角。

Description

一种天线系统、一种虚拟天线端口的映射方法及装置 技术领域
本发明涉及通信技术领域,尤其涉及一种天线系统、一种虚拟天线端口的映射方法及装置。
背景技术
随着智能手机和移动互联网业务的快速发展,运营商网络将面临越来越大的容量压力。因此,如何提高网络容量,满足用户日益旺盛的数据需求,同时降低网络建设和运营成本,是所有运营商面临的问题。小基站具有容量大、速率高的特点,可以增加网络容量,提高宏基站边缘覆盖区域的用户上网速率;也能适应各种回传网络,部署灵活快捷,为用户带来更好的移动宽带体验。
目前,小基站通过方式一实现网络覆盖,宏基站通过方式二实现网络覆盖。
方式一、如图1所示,小基站的天线系统包括一个天线阵列,该天线阵列包括6个纵向排列的天线阵元,每个天线阵元由1个正45度的极化阵元和1个负45度的极化阵元组成。6个正45度的极化阵元对应物理天线端口0,6个负45度的极化阵元对应物理天线端口1。小基站中的基带处理单元(Base Band Unit,简称BBU)通过权值[1,1]将虚拟天线端口0(Port0)和虚拟天线端口1(Port1)分别映射到物理天线端口0和物理天线端口1,通过该映射使得天线系统产生固定形状的一个波束,从而实现网络覆盖。
方式二、如图2所示,宏基站的天线系统包括一个天线阵列,该天线阵列包括2列天线阵元,每列包括6个纵向排列的天线阵元, 每个天线阵元由1个正45度的极化阵元和1个负45度的极化阵元组成。第一列天线阵元的6个正45度的极化阵元对应物理天线端口0,第一列天线阵元的6个负45度的极化阵元对应物理天线端口1,第二列天线阵元的6个正45度的极化阵元对应物理天线端口2,第二列天线阵元的6个负45度的极化阵元对应物理天线端口3。宏基站中的BBU将虚拟天线端口0(Port0)映射到物理天线端口0和物理天线端口1,将虚拟天线端口1(Port1)映射到物理天线端口2和物理天线端口3,通过该映射使得天线系统产生固定形状的一个波束,从而实现网络覆盖。
其中,方式一仅仅可以应用在低层居民区和街道覆盖场景,主要安装方式为街边道路杆体抱杆安装。方式二应用在建筑物不密集的广覆盖场景,由于宏基站的射频拉远单元(Radio Remote Unit,简称RRU)和天线系统体积和重量较大,因此,无法应用在低层居民区和街道覆盖场景。方式一和方式二中的天线系统中,天线系统产生的垂直维度的波束固定为窄波束,因此,方式一和方式二均无法满足中高层覆盖场景。
发明内容
本发明的实施例提供了一种天线系统、一种虚拟天线端口的映射方法及装置,用以实现对中高层建筑进行网络覆盖。
为达到上述目的,本发明的实施例采用如下技术方案:
第一方面,提供了一种天线系统,包括:至少一个天线模块,天线模块包括纵向排列的第一天线阵列和第二天线阵列;与至少一个天线模块一一对应的至少一个电调组,电调组包括第一电调和第二电调,每个天线模块对应的电调组中的第一电调与该天线模块中的第一天线阵列连接,用于调整该天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角,每个天线模块对应的电调组中的第二 电调与该天线模块中的第二天线阵列连接,用于调整该天线模块中的第二天线阵列产生的波束的垂直波瓣的下倾角。
第一方面提供的天线系统,至少包括两个天线阵列,因此,至少可以产生2个波束,可以通过电调对这两个波束的方向进行控制,使得这两个波束共同形成垂直维度的宽波束(或窄波束),实现对高层建筑(或低层建筑)的网络覆盖。
在一种可能的设计中,天线模块中的第一天线阵列包括纵向排列的N1个天线阵元,天线模块中的第二天线阵列包括纵向排列的N2个天线阵元,每个天线阵元包括一个正45度和一个负45度极化阵元,其中,第一天线阵列的正45度的N1个极化阵元对应第三物理天线端口,第一天线阵列的负45度的N1个极化阵元对应第四物理天线端口,第二天线阵列的正45度的N2个极化阵元对应第一物理天线端口,第二天线阵列的负45度的N2个极化阵元对应第二物理天线端口,N1、N2均为大于0的整数。
第二方面,提供了一种虚拟天线端口的映射方法,包括:基带处理单元BBU获取天线系统的架构信息,天线系统包括至少一个天线模块,天线模块包括纵向排列的第一天线阵列和第二天线阵列,第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同或不同;BBU根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口。
第二方面提供的方法,可以通过对虚拟天线端口和物理天线端口的映射使得天线模块可以产生合成波束,由于构成该合成波束的2个天线阵列产生的2个波束的垂直波瓣的下倾角可以不同,从而使得该合成波束可以为在垂直维度上的宽波束,实现对高层建筑的网络覆盖。
在一种可能的设计中,天线模块中的第一天线阵列包括纵向排列的N1个天线阵元,天线模块中的第二天线阵列包括纵向排列的N2个天线阵元,每个天线阵元包括一个正45度和一个负45度极化阵元,其中,第一天线阵列的正45度的N1个极化阵元对应第三物理天线端口,第一天线阵列的负45度的N1个极化阵元对应第四物理天线端口,第二天线阵列的正45度的N2个极化阵元对应第一物理天线端口,第二天线阵列的负45度的N2个极化阵元对应第二物理天线端口,N1、N2均为大于0的整数。
在一种可能的设计中,天线系统包括一个天线模块,天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2,BBU根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口,包括:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到天线模块中的第一物理天线端口和第三物理天线端口;将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1]映射到天线模块中的第二物理天线端口和第四物理天线端口。
该种可能的设计,天线模块的合成波束为在垂直维度上的窄波束,该窄波束可以对低层建筑以及街道进行网络覆盖。
在一种可能的设计中,天线系统包括一个天线模块,天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,虚拟天线端口的个数为2,BBU根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口,包括:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到天线模块中的第一物理天线端口和第四物理天线端口;将2个虚拟天线端口中的虚拟 天线端口1通过权值[1,-1]映射到天线模块中的第二物理天线端口和第三物理天线端口。
该种可能的设计,天线模块的合成波束为在垂直维度上的宽波束,该宽波束可以对高层建筑进行网络覆盖。
在一种可能的设计中,天线系统包括一个天线模块,虚拟天线端口的个数为4,BBU根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口,包括:BBU将4个虚拟天线端口中的虚拟天线端口0映射到天线模块中的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1映射到天线模块中的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2映射到天线模块中的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3映射到天线模块中的第四物理天线端口。
该种可能的设计,当天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角相同时,天线模块的合成波束为在垂直维度上的窄波束,该窄波束可以对低层建筑以及街道进行网络覆盖,当天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角不同时,天线模块的合成波束为在垂直维度上的宽波束,该宽波束可以对高层建筑进行网络覆盖。
在一种可能的设计中,天线系统包括2个天线模块,每个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2,BBU根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口,包括:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口、第一天线模块的第三物理天线端口、2个天线模块中的第二天线模块的第一物理天线端口 和第二天线模块的第三物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口、第一天线模块的第四物理天线端口、2个天线模块中的第二天线模块的第二物理天线端口和第二天线模块的第四物理天线端口。
该种可能的设计,第一天线模块的合成波束与第二天线模块的合成波束均为在垂直维度上的窄波束,这两个窄波束可以对不同的低层建筑或街道进行网络覆盖。
在一种可能的设计中,天线系统包括2个天线模块,每个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,虚拟天线端口的个数为2,BBU根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口,包括:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口、第一天线模块的第四物理天线端口、2个天线模块中的第二天线模块的第一物理天线端口和第二天线模块的第四物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[-1,1,-1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口、第一天线模块的第三物理天线端口、2个天线模块中的第二天线模块的第二物理天线端口和第二天线模块的第三物理天线端口。
该种可能的设计,第一天线模块的合成波束与第二天线模块的合成波束均为在垂直维度上的宽波束,这两个宽波束可以对不同的高层建筑进行网络覆盖。
在一种可能的设计中,天线系统包括2个天线模块,2个天线模块中的第一天线模块中的第一天线阵列产生的波束的垂直波瓣的下 倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,2个天线模块中的第二天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2,BBU根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口,包括:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口、第一天线模块的第四物理天线端口、2个天线模块中的第二天线模块的第一物理天线端口和第二天线模块的第三物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[-1,1,1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口、第一天线模块的第三物理天线端口、2个天线模块中的第二天线模块的第二物理天线端口和第二天线模块的第四物理天线端口。
该种可能的设计,第一天线模块的合成波束为在垂直维度上的宽波束,该宽波束可以对高层建筑进行网络覆盖,第二天线模块的合成波束为在垂直维度上的窄波束,该窄波束可以对低层建筑和街道进行网络覆盖。
在一种可能的设计中,天线系统包括2个天线模块,虚拟天线端口的个数为4,BBU根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口,包括:BBU将4个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口和2个天线模块中的第二天线模块的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1通过权值[1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口和2个天线模块中的第二天线模块的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2通过权值[1, 1]映射到2个天线模块中的第一天线模块的第三物理天线端口和2个天线模块中的第二天线模块的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3通过权值[1,1]映射到2个天线模块中的第一天线模块的第四物理天线端口和2个天线模块中的第二天线模块的第四物理天线端口。
该种可能的设计,当2个天线模块中的每个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角相同时,2个天线模块产生的合成波束均为在垂直维度上的窄波束,这两个窄波束可以对不同的低层建筑或街道进行网络覆盖。当2个天线模块中的每个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角均不同时,2个天线模块产生的合成波束均为在垂直维度上的宽波束,这两个宽波束可以对不同的高层建筑进行网络覆盖。当2个天线模块中的一个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角相同时,该天线模块产生的合成波束为在垂直维度上的窄波束,可以对低层建筑或街道进行网络覆盖,当2个天线模块中的另一个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角不同时,该天线模块产生的合成波束为在垂直维度上的宽波束,可以对高层建筑进行网络覆盖。
在一种可能的设计中,当一个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同时,该方法还包括:BBU对该天线模块中的第一天线阵列产生的波束和第二天线阵列产生的波束进行相位差补偿。
在一种可能的设计中,对该天线模块中的第一天线阵列产生的波束和第二天线阵列产生的波束进行相位差补偿,包括:BBU设置该天线模块中的第一天线阵列产生的波束的相位和第二天线阵列产 生的波束的相位,其中,该天线模块中的第一天线阵列产生的波束的相位比该天线模块中的第二天线阵列产生的波束的相位大360*sin((ET-1)*15/14.4/180*π)*330*Frq/300,其中,ET为该天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角,Frq为物理天线端口的发射信号的频率。
第三方面,提供了一种BBU,包括:获取单元,用于获取天线系统的架构信息,天线系统包括至少一个天线模块,天线模块包括纵向排列的第一天线阵列和第二天线阵列,第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同或不同;处理单元,用于根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口。
在一种可能的设计中,天线模块中的第一天线阵列包括纵向排列的N1个天线阵元,天线模块中的第二天线阵列包括纵向排列的N2个天线阵元,每个天线阵元包括一个正45度和一个负45度极化阵元,其中,第一天线阵列的正45度的N1个极化阵元对应第三物理天线端口,第一天线阵列的负45度的N1个极化阵元对应第四物理天线端口,第二天线阵列的正45度的N2个极化阵元对应第一物理天线端口,第二天线阵列的负45度的N2个极化阵元对应第二物理天线端口,N1、N2均为大于0的整数。
在一种可能的设计中,天线系统包括一个天线模块,天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2,处理单元,具体用于:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到天线模块中的第一物理天线端口和第三物理天线端口;将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1] 映射到天线模块中的第二物理天线端口和第四物理天线端口。
在一种可能的设计中,天线系统包括一个天线模块,天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,虚拟天线端口的个数为2,处理单元,具体用于:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到天线模块中的第一物理天线端口和第四物理天线端口;将2个虚拟天线端口中的虚拟天线端口1通过权值[1,-1]映射到天线模块中的第二物理天线端口和第三物理天线端口。
在一种可能的设计中,天线系统包括一个天线模块,虚拟天线端口的个数为4,处理单元,具体用于:BBU将4个虚拟天线端口中的虚拟天线端口0映射到天线模块中的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1映射到天线模块中的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2映射到天线模块中的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3映射到天线模块中的第四物理天线端口。
在一种可能的设计中,天线系统包括2个天线模块,每个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2,处理单元,具体用于:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口、第一天线模块的第三物理天线端口、2个天线模块中的第二天线模块的第一物理天线端口和第二天线模块的第三物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口、第一天线模块的第四物理天线端口、2个天线模块中的第二天线模块的第二物理天线端口和第二天线模块的第四物理天线端口。
在一种可能的设计中,天线系统包括2个天线模块,每个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,虚拟天线端口的个数为2,处理单元,具体用于:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口、第一天线模块的第四物理天线端口、2个天线模块中的第二天线模块的第一物理天线端口和第二天线模块的第四物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[-1,1,-1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口、第一天线模块的第三物理天线端口、2个天线模块中的第二天线模块的第二物理天线端口和第二天线模块的第三物理天线端口。
在一种可能的设计中,天线系统包括2个天线模块,2个天线模块中的第一天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,2个天线模块中的第二天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2,处理单元,具体用于:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口、第一天线模块的第四物理天线端口、2个天线模块中的第二天线模块的第一物理天线端口和第二天线模块的第三物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[-1,1,1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口、第一天线模块的第三物理天线端口、2个天线模块中的第二天线模块的第二物理天线端口和第二天线模块的第四物理天线端口。
在一种可能的设计中,天线系统包括2个天线模块,虚拟天线 端口的个数为4,处理单元,具体用于:BBU将4个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口和2个天线模块中的第二天线模块的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1通过权值[1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口和2个天线模块中的第二天线模块的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2通过权值[1,1]映射到2个天线模块中的第一天线模块的第三物理天线端口和2个天线模块中的第二天线模块的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3通过权值[1,1]映射到2个天线模块中的第一天线模块的第四物理天线端口和2个天线模块中的第二天线模块的第四物理天线端口。
在一种可能的设计中,当一个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同时,处理单元,还用于:对该天线模块中的第一天线阵列产生的波束和第二天线阵列产生的波束进行相位差补偿。
在一种可能的设计中,处理单元,具体用于:设置该天线模块中的第一天线阵列产生的波束的相位和第二天线阵列产生的波束的相位,其中,该天线模块中的第一天线阵列产生的波束的相位比该天线模块中的第二天线阵列产生的波束的相位大360*sin((ET-1)*15/14.4/180*π)*330*Frq/300,其中,ET为该天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角,Frq为物理天线端口的发射信号的频率。
第四方面,提供了一种BBU,包括:处理器、存储器、总线和通信接口;存储器用于存储计算机执行指令,处理器与存储器通过总线连接,处理器通过执行存储器存储的计算机执行指令,以实现第一方面提供的任意一种方法。
第三方面和第四方面中任一种设计方式所带来的技术效果可参见第一方面中不同设计方式所带来的技术效果,此处不再赘述。
第五方面,提供了一种计算机存储介质,用于储存为上述BBU所用的计算机软件指令,其包含用于执行上述第一方面提供的任意一种方法所设计的程序。
附图说明
图1为现有技术中的一种天线系统的组成示意图;
图2为现有技术中的又一种天线系统的组成示意图;
图3为本发明实施例提供的一种分布式基站的组成示意图;
图4为本发明实施例提供的一种BBU的组成示意图;
图5为本发明实施例提供的一种天线系统的组成示意图;
图6为本发明实施例提供的又一种天线系统的组成示意图;
图7为本发明实施例提供的一种天线模块产生的波束覆盖低层建筑的示意图;
图8为本发明实施例提供的一种天线模块产生的波束覆盖高层建筑的示意图;
图9为本发明实施例提供的一种虚拟天线端口的映射方法的流程图;
图10为本发明实施例提供的一种虚拟天线端口与物理天线端口的映射示意图;
图11为本发明实施例提供的又一种虚拟天线端口与物理天线端口的映射示意图;
图12为本发明实施例提供的又一种虚拟天线端口与物理天线端口的映射示意图;
图13为本发明实施例提供的又一种虚拟天线端口与物理天线端口的映射示意图;
图14为本发明实施例提供的两个天线模块对不同的低层建筑进行网络覆盖的示意图;
图15为本发明实施例提供的又一种虚拟天线端口与物理天线端口的映射示意图;
图16为本发明实施例提供的两个天线模块对不同的高层建筑进行网络覆盖的示意图;
图17为本发明实施例提供的又一种虚拟天线端口与物理天线端口的映射示意图;
图18为本发明实施例提供的两个天线模块分别对高层建筑和低层建筑进行网络覆盖的示意图;
图19为本发明实施例提供的又一种虚拟天线端口与物理天线端口的映射示意图;
图20为本发明实施例提供的一种BBU的组成示意图;
图21为本发明实施例提供的又一种BBU的组成示意图。
具体实施方式
下面通过具体的实施例,对本发明实施例提供的方案进行详细说明。
本发明实施例下文描述中的第一天线模块和第二天线模块中的“第一”和“第二”可以为任一天线模块,此处并非特指,仅仅为了区分两个天线模块的不同。同理,第一天线阵列和第二天线阵列中的“第一”和“第二”也仅仅为了区分两个天线阵列的不同。其他描述中的“第一”、“第二”、“第三”和“第四”同理。
本发明实施例提供的方法可以应用于分布式基站中,如图3所示,分布式基站包括BBU和通过光纤与BBU连接的RRU,RRU通过馈线与天线系统连接,天线系统通过发射(或接收)电磁波来发送(或接收)信息。其中,BBU用于完成基带信号处理、传输、主控以及时钟等功能;RRU用于完成对射频信号的滤波、信号放大和上下变频处理,并采用数字中频技术实现从中频模拟信号到基带数字信号的转换。具体的,RRU还可以与天线系统一体化配置形成有源天线单元(Active Antenna Unit,简称AAU),以满足基站站址随时随处可得,环境友好易部署的基本要求。
其中,如图4所示,BBU一般包括控制系统、与控制系统连接的电源和环境监控系统、与控制系统、电源和环境监控系统均连接的传输系统和基带系统等,其中,控制系统用于集中管理整个分布式基站,包括操作维护和信令处理,并提供系统时钟;电源和环境监控系统用于对电源进行转换,并提供外部监控接口;传输系统用于传输控制系统与电源和环境监控系统之间交互的信息;基带系统用于完成上下行数据基带处理功能。
基于现有技术中存在的问题,本发明实施例提供了一种天线系统,包括:
至少一个天线模块50,如图5所示,天线模块50包括纵向排列的第一天线阵列501和第二天线阵列502;
与至少一个天线模块50一一对应的至少一个电调组50',如图5所示,电调组50'包括第一电调501'和第二电调502',每个天线模块50对应的电调组50'中的第一电调501'与该天线模块50中的第一天线阵列501连接,用于调整该天线模块50中的第一天线阵列501产生的波束的垂直波瓣的下倾角,每个天线模块50对应的电调组50'中的第二电调502'与该天线模块50中的第二天线阵列502连 接,用于调整该天线模块50中的第二天线阵列502产生的波束的垂直波瓣的下倾角。
其中,一个天线模块对应的电调组中的电调可以调整该天线模块中的两个天线阵列产生的波束的垂直波瓣的下倾角,波束的垂直波瓣的下倾角是指该波束的方向与水平线的夹角,从而可以调整这两个天线阵列产生的波束的方向,使得这两个天线阵列产生的波束共同形成垂直维度的宽波束或垂直维度的窄波束。为了方便描述,在下文中将一个天线模块中的两个天线阵列产生的两个波束共同形成的波束称为该天线模块的“合成波束”。
具体的,当一个天线模块中的两个天线阵列产生的两个波束的垂直波瓣的下倾角相同时,该天线模块的合成波束为垂直维度的窄波束,当一个天线模块中的两个天线阵列产生的两个波束的垂直波瓣的下倾角不同时,该天线模块的合成波束为垂直维度的宽波束,其中,当两个天线阵列产生的波束的垂直波瓣的下倾角之间的差值越大时,合成波束在垂直维度的宽度越宽。
可选的,如图6所示,天线模块中的第一天线阵列包括纵向排列的N1个天线阵元,天线模块中的第二天线阵列包括纵向排列的N2个天线阵元,每个天线阵元包括一个正45度和一个负45度极化阵元,其中,第一天线阵列的正45度的N1个极化阵元对应第三物理天线端口,第一天线阵列的负45度的N1个极化阵元对应第四物理天线端口,第二天线阵列的正45度的N2个极化阵元对应第一物理天线端口,第二天线阵列的负45度的N2个极化阵元对应第二物理天线端口,N1、N2均为大于0的整数。一般情况下,N1=N2,示例性的,图6中以N1=N2=3为例进行绘制。
另外,N1与N2的和一般为大于0的偶数。
其中,天线系统中的每个天线模块均与基站中的RRU连接,天 线系统中的天线模块的个数一般设置为1个或2个。当天线系统中的天线模块的个数为1个时,天线系统中包括4个物理天线端口,比图1所示的天线系统(即现有技术中的方式一提供的天线系统)中的物理天线端口数量多,该情况下,本发明实施例提供的天线系统相比图1所示的天线系统能够满足网络系统的更高容量需求。当天线系统中的天线模块的个数为2个时,天线系统中包括8个物理天线端口,比图1所示的天线系统和图2所示的天线系统(即现有技术中的方式二提供的天线系统)中的物理天线端口数量都多,该情况下,本发明实施例提供的天线系统相比图1所示的天线系统和图2所示的天线系统能够满足网络系统的更高容量需求。
当天线系统中包括一个天线模块时,示例性的,如图7和图8所示,天线模块通过杆(例如,电杆)支撑,波束1表示该天线模块中的第一天线阵列产生的波束,α为波束1的垂直波瓣的下倾角,波束2表示该天线模块中的第二天线阵列产生的波束,β为波束2的垂直波瓣的下倾角,如图7所示,当α与β相同时,该天线模块的合成波束为一个垂直维度的窄波束,该窄波束可以用于对低层建筑和街道进行网络覆盖,如图8所示,当α与β不同时,该天线模块的合成波束为一个垂直维度的宽波束,该宽波束可以用于对高层建筑进行网络覆盖。
需要说明的是,当两个波束的方向位于水平线的上下两侧时,α和β一个为正值一个为负值。
本发明实施例提供的天线系统,至少包括两个天线阵列,因此,至少可以产生2个波束,可以通过电调对这两个波束的方向进行控制,使得这两个波束共同形成垂直维度的宽波束(或窄波束),实现对高层建筑(或低层建筑)的网络覆盖。
本发明实施例还提供了一种虚拟天线端口的映射方法,如图9所示,包括:
901、BBU获取天线系统的架构信息。
其中,天线系统包括至少一个天线模块,天线模块包括纵向排列的第一天线阵列和第二天线阵列,第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同或不同。
该实施例提供的方法具体可以由BBU中的基带系统执行。
其中,天线系统的架构信息可以包括任一与天线系统相关的信息,例如,天线系统中包括的天线模块的个数、天线模块包括的天线阵列的个数以及排列方式、天线阵列中包括的天线阵元的个数以及排列方式、物理天线端口的数量以及物理天线端口与极化阵元的对应关系等。
当天线系统与RRU一体化配置形成AAU时,天线系统的架构信息可以由AAU直接上报BBU,当天线系统与RRU非一体化配置时,天线系统的架构信息可以由天线系统向RRU上报,RRU再向BBU上报。
具体的,天线系统中可以包括与至少一个天线模块一一对应的至少一个电调组,电调组包括第一电调和第二电调,每个天线模块对应的电调组中的第一电调与该天线模块中的第一天线阵列连接,用于调整该天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角,每个天线模块对应的电调组中的第二电调与该天线模块中的第二天线阵列连接,用于调整该天线模块中的第二天线阵列产生的波束的垂直波瓣的下倾角。因此,可以通过电调使得第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直 波瓣的下倾角相同或不同。
902、BBU根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口。
具体的,BBU可以采用虚拟天线映射(Virtual Antenna Mapping,简称VAM)算法将虚拟天线端口映射到物理天线端口。
在一个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角固定的情况下,通过将虚拟天线端口映射到物理天线端口,使得天线系统中的每个天线模块可以产生一个具有一定形状、一定波束宽度和一定天线增益的合成波束,从而满足不同的场景的应用需求,具体可参见关于图7和图8的描述。具体的,可以通过调节天线阵列对应的电调调整该天线阵列产生的波束的垂直波瓣的下倾角。
本发明实施例提供的方法,可以通过对虚拟天线端口和物理天线端口的映射使得天线模块可以产生合成波束,由于构成该合成波束的2个天线阵列产生的2个波束的垂直波瓣的下倾角可以不同,从而使得该合成波束可以为在垂直维度上的宽波束,实现对高层建筑的网络覆盖。
可选的,天线模块中的第一天线阵列包括纵向排列的N1个天线阵元,天线模块中的第二天线阵列包括纵向排列的N2个天线阵元,每个天线阵元包括一个正45度和一个负45度极化阵元,其中,第一天线阵列的正45度的N1个极化阵元对应第三物理天线端口,第一天线阵列的负45度的N1个极化阵元对应第四物理天线端口,第二天线阵列的正45度的N2个极化阵元对应第一物理天线端口,第二天线阵列的负45度的N2个极化阵元对应第二物理天线端口,N1、N2均为大于0的整数。
当天线系统中包括的天线模块的个数、天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角以及虚拟天线端口的个数不同时,步骤902的具体实现方式不同,以下对不同的情况分别进行示例性说明。
情况一、天线系统包括一个天线模块,天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2。
步骤902在具体实现时可以为:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到所述天线模块中的第一物理天线端口和第三物理天线端口;将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1]映射到所述天线模块中的第二物理天线端口和第四物理天线端口。
在本发明实施例中,为了方便描述,将第一物理天线端口记为T/R0,第二物理天线端口记为T/R1,第三物理天线端口记为T/R2,第四物理天线端口记为T/R3,虚拟天线端口0即Port0,虚拟天线端口1即Port1,下文中提到的虚拟天线端口2即Port2,虚拟天线端口3即Port3。
示例性的,如图10所示,图10示出了在情况一下,虚拟天线端口与物理天线端口的映射示意图,其中,BBU将Port0通过权值[1,1]映射到T/R0和T/R2,Port1通过权值[1,1]映射到T/R1和T/R3。
该情况下,天线模块的合成波束为在垂直维度上的类似图7所示的窄波束,该窄波束可以对低层建筑以及街道进行网络覆盖。
情况二、天线系统包括一个天线模块,天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角不同,虚拟天线端口的个数为2。
步骤902在具体实现时可以为:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到所述天线模块中的第一物理天线端口和第四物理天线端口;将2个虚拟天线端口中的虚拟天线端口1通过权值[1,-1]映射到所述天线模块中的第二物理天线端口和第三物理天线端口。
示例性的,如图11所示,图11示出了在情况二下,虚拟天线端口与物理天线端口的映射示意图,其中,BBU将Port0通过权值[1,1]映射到T/R0和T/R3,Port1通过权值[1,-1]映射到T/R1和T/R2。
该情况下,天线模块的合成波束为在垂直维度上的类似图8所示的宽波束,该宽波束可以对高层建筑进行网络覆盖。
情况三、天线系统包括一个天线模块,虚拟天线端口的个数为4。
步骤902在具体实现时可以为:BBU将4个虚拟天线端口中的虚拟天线端口0映射到所述天线模块中的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1映射到所述天线模块中的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2映射到所述天线模块中的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3映射到所述天线模块中的第四物理天线端口。
示例性的,如图12所示,图12示出了在情况三下,虚拟天线端口与物理天线端口的映射示意图,其中,BBU将Port0映射到T/R0,将Port2映射到T/R1,将Port1映射到T/R2,将Port3映射到T/R3。
该情况下,当天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角相同时,天线模块的合成波束为在垂直维度上的类似图7所示的窄波束,该窄波束可以对低层建筑以及街道进行网络覆盖,当天线模块中的第一天线阵列和第二天线阵列产 生的波束的垂直波瓣的下倾角不同时,天线模块的合成波束为在垂直维度上的类似图8所示的宽波束,该宽波束可以对高层建筑进行网络覆盖。
情况四、天线系统包括2个天线模块,每个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2。
步骤902在具体实现时可以为:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到所述2个天线模块中的第一天线模块的第一物理天线端口、所述第一天线模块的第三物理天线端口、所述2个天线模块中的第二天线模块的第一物理天线端口和所述第二天线模块的第三物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1,1,1]映射到所述2个天线模块中的第一天线模块的第二物理天线端口、所述第一天线模块的第四物理天线端口、所述2个天线模块中的第二天线模块的第二物理天线端口和所述第二天线模块的第四物理天线端口。
示例性的,如图13所示,图13示出了在情况四下,虚拟天线端口与物理天线端口的映射示意图,其中,BBU将Port0通过权值[1,1,1,1]映射到第一天线模块的T/R0和T/R2以及第二天线模块的T/R0和T/R2,将Port1通过权值[1,1,1,1]映射到第一天线模块的T/R1和T/R3以及第二天线模块的T/R1和T/R3。
该情况下,如图14所示,第一天线模块的合成波束与第二天线模块的合成波束均为在垂直维度上的窄波束,这两个窄波束可以对不同的低层建筑或街道进行网络覆盖。
情况五、天线系统包括2个天线模块,每个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角不同,虚拟天线端口的个数为2。
步骤902在具体实现时可以为:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到所述2个天线模块中的第一天线模块的第一物理天线端口、所述第一天线模块的第四物理天线端口、所述2个天线模块中的第二天线模块的第一物理天线端口和所述第二天线模块的第四物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[-1,1,-1,1]映射到所述2个天线模块中的第一天线模块的第二物理天线端口、所述第一天线模块的第三物理天线端口、所述2个天线模块中的第二天线模块的第二物理天线端口和所述第二天线模块的第三物理天线端口。
示例性的,如图15所示,图15示出了在情况五下,虚拟天线端口与物理天线端口的映射示意图,其中,BBU将Port0通过权值[1,1,1,1]映射到第一天线模块的T/R0和T/R3以及第二天线模块的T/R0和T/R3,将Port1通过权值[-1,1,-1,1]映射到第一天线模块的T/R1和T/R2以及第二天线模块的T/R1和T/R2。
该情况下,如图16所示,第一天线模块的合成波束与第二天线模块的合成波束均为在垂直维度上的宽波束,这两个宽波束可以对不同的高层建筑进行网络覆盖。
情况六、天线系统包括2个天线模块,2个天线模块中的第一天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角不同,2个天线模块中的第二天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2。
步骤902在具体实现时可以为:BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到所述2个天线模块中的第一天线模块的第一物理天线端口、所述第一天线模块的第四物理天线端口、所述2个天线模块中的第二天线模块的第一物理天线端 口和所述第二天线模块的第三物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[-1,1,1,1]映射到所述2个天线模块中的第一天线模块的第二物理天线端口、所述第一天线模块的第三物理天线端口、所述2个天线模块中的第二天线模块的第二物理天线端口和所述第二天线模块的第四物理天线端口。
示例性的,如图17所示,图17示出了在情况六下,虚拟天线端口与物理天线端口的映射示意图,其中,BBU将Port0通过权值[1,1,1,1]映射到第一天线模块的T/R0和T/R3以及第二天线模块的T/R0和T/R2,将Port1通过权值[-1,1,1,1]映射到第一天线模块的T/R1和T/R2以及第二天线模块的T/R1和T/R3。
该情况下,如图18所示,第一天线模块的合成波束为在垂直维度上的宽波束,该宽波束可以对高层建筑进行网络覆盖,第二天线模块的合成波束为在垂直维度上的窄波束,该窄波束可以对低层建筑和街道进行网络覆盖。
情况七、天线系统包括2个天线模块,虚拟天线端口的个数为4。
步骤902在具体实现时可以为:BBU将4个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到所述2个天线模块中的第一天线模块的第一物理天线端口和所述2个天线模块中的第二天线模块的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1通过权值[1,1]映射到所述2个天线模块中的第一天线模块的第二物理天线端口和所述2个天线模块中的第二天线模块的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2通过权值[1,1]映射到所述2个天线模块中的第一天线模块的第三物理天线端口和所述2个天线模块中的第二天线模块的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3通过权值[1,1]映射到所述2个天线模块中的第一天线模块的第四物理天线端口和所述2个天线模块中的第 二天线模块的第四物理天线端口。
示例性的,如图19所示,图19示出了在情况七下,虚拟天线端口与物理天线端口的映射示意图,其中,BBU将Port0通过权值[1,1]映射到第一天线模块的T/R0和第二天线模块的T/R0,将Port1通过权值[1,1]映射到第一天线模块的T/R2和第二天线模块的T/R2,将Port2通过权值[1,1]映射到第一天线模块的T/R1和第二天线模块的T/R1,将Port3通过权值[1,1]映射到第一天线模块的T/R3和第二天线模块的T/R3。
该情况下,当2个天线模块中的每个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角相同时,2个天线模块产生的合成波束均为在垂直维度上的窄波束,这两个窄波束可以对不同的低层建筑或街道进行网络覆盖,具体可参见图14。
当2个天线模块中的每个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角均不同时,2个天线模块产生的合成波束均为在垂直维度上的宽波束,这两个宽波束可以对不同的高层建筑进行网络覆盖,具体可参见图16。
当2个天线模块中的一个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角相同时,该天线模块产生的合成波束为在垂直维度上的窄波束,可以对低层建筑或街道进行网络覆盖,当2个天线模块中的另一个天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角不同时,该天线模块产生的合成波束为在垂直维度上的宽波束,可以对高层建筑进行网络覆盖,具体可参见图18。
本发明实施例中提供的上述方法对虚拟天线端口和物理天线端口进行映射时,一个天线模块中的第一天线阵列和第二天线阵列产生的波束不会产生相干叠加,从而使得该天线模块产生的合成波束 具有更好的覆盖效果。
在上述情况中,可选的,当一个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同时,该方法还包括:BBU对该天线模块中的第一天线阵列产生的波束和第二天线阵列产生的波束进行相位差补偿。通过对相位差进行补偿,可以提高天线模块中的两个天线阵列产生的波束的合成效果。
具体补偿方法可以为:设置该天线模块中的第一天线阵列产生的波束的相位和第二天线阵列产生的波束的相位,其中,该天线模块中的第一天线阵列产生的波束的相位比该天线模块中的第二天线阵列产生的波束的相位大360*sin((ET-1)*15/14.4/180*π)*330*Frq/300,其中,ET为该天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角,Frq为物理天线端口的发射信号的频率,其中,“*”表示“相乘”。
具体的,参见图7,第一天线阵列产生的波束的垂直波瓣的下倾角α与第二天线阵列产生的波束的垂直波瓣的下倾角β相同时,第一天线阵列产生的波束1和第二天线阵列产生的波束2共同形成一个垂直维度的窄波束,波束1和波束2之间存在相位差,为了保证波束1和波束2的合成效果,BBU需要对波束1和波束2之间的相位差进行补偿,具体的,可以通过使得第一天线阵列产生的波束的相位比第二天线阵列产生的波束的相位大360*sin((ET-1)*15/14.4/180*π)*330*Frq/300实现。
示例性的,当第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角为15度、且物理天线端口的发射信号的频率为2.2GHz时,第一天线阵列产生的波束的相位可以设置为0,第二天线阵列产生的波束的相位可以设置为 -219.3576度。
另外,在上述方法中,一个天线模块产生的两个波束可以覆盖一个4通道的小区,也可以覆盖2个异频的2通道的小区。
通过采用本发明实施例中的天线系统产生的垂直维度的窄波束和宽波束实现不同场景下的网络覆盖可以有效的提高网络吞吐量,表1为通过仿真得出的AAU为EM1.0(EasyMacro1.0)和EM2.0(EasyMacro2.0)在不同的场景下网络吞吐量的增加量。其中,EM1.0采用现有技术中的方式一实现网络覆盖,本发明中的RRU和天线系统的一体化配置后得到的AAU记为EM2.0。
表1
Figure PCTCN2016106456-appb-000001
其中,EM2.0-SU表示单用户场景,EM2.0-MU表示多用户场景,DL表示下行,UL表示上行,场景1为街道和沿街道1-2层建筑的覆盖场景,场景2为沿街道200米,4-8层建筑的覆盖场景,场景3为中高层楼宇(楼高60米)覆盖场景,从表1可以看出,街道站场景(包括场景1和场景2)下,EM2.0相对EM1.0下行平均吞吐量提升8%-12%,下行边缘吞吐量提升16%-24%;上行平均吞吐量提升40%-45%,上行边缘吞吐量提升60%-82%。中高层楼宇场景(场景3)下,EM2.0相对EM1.0下行平均吞吐量提升10%-50%,下行边缘吞吐量提升33%-35%;上行平均吞吐量提升22%-45%,上行边 缘吞吐量提升65%。
上述实施例主要从方法的各个步骤的执行过程对本发明实施例提供的方案进行了介绍。可以理解的是,BBU为了实现上述方法,其包含了执行方法中的各个步骤的相应的硬件结构和/或软件单元。本领域技术人员应该很容易意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,本发明能够以硬件或硬件和计算机软件的结合形式来实现。具体究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
本发明实施例可以根据上述方法实施例对BBU进行功能单元的划分。例如,可以对应各个方法步骤划分各个功能单元,也可以将两个或两个以上的功能单元集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。需要说明的是,本发明实施例中对单元的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。
示例性的,如图20所示,图20示出了一种BBU20的组成示意图,包括:
获取单元2001,用于获取天线系统的架构信息,天线系统包括至少一个天线模块,天线模块包括纵向排列的第一天线阵列和第二天线阵列,第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同或不同;
处理单元2002,用于根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口。
可选的,天线模块中的第一天线阵列包括纵向排列的N1个天线阵元,天线模块中的第二天线阵列包括纵向排列的N2个天线阵元,每个天线阵元包括一个正45度和一个负45度极化阵元,其中,第一天线阵列的正45度的N1个极化阵元对应第三物理天线端口,第一天线阵列的负45度的N1个极化阵元对应第四物理天线端口,第二天线阵列的正45度的N2个极化阵元对应第一物理天线端口,第二天线阵列的负45度的N2个极化阵元对应第二物理天线端口,N1、N2均为大于0的整数。
可选的,天线系统包括一个天线模块,天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2,处理单元2002,具体用于:
BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到天线模块中的第一物理天线端口和第三物理天线端口;将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1]映射到天线模块中的第二物理天线端口和第四物理天线端口。
可选的,天线系统包括一个天线模块,天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,虚拟天线端口的个数为2,处理单元2002,具体用于:
BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到天线模块中的第一物理天线端口和第四物理天线端口;将2个虚拟天线端口中的虚拟天线端口1通过权值[1,-1]映射到天线模块中的第二物理天线端口和第三物理天线端口。
可选的,天线系统包括一个天线模块,虚拟天线端口的个数为4,处理单元2002,具体用于:
BBU将4个虚拟天线端口中的虚拟天线端口0映射到天线模块中的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1映射到天线模块中的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2映射到天线模块中的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3映射到天线模块中的第四物理天线端口。
可选的,天线系统包括2个天线模块,每个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2,处理单元2002,具体用于:
BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口、第一天线模块的第三物理天线端口、2个天线模块中的第二天线模块的第一物理天线端口和第二天线模块的第三物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口、第一天线模块的第四物理天线端口、2个天线模块中的第二天线模块的第二物理天线端口和第二天线模块的第四物理天线端口。
可选的,天线系统包括2个天线模块,每个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,虚拟天线端口的个数为2,处理单元2002,具体用于:
BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口、第一天线模块的第四物理天线端口、2个天线模块中的第二天线模块的第一物理天线端口和第二天线模块的第四物理天线端口,将2个 虚拟天线端口中的虚拟天线端口1通过权值[-1,1,-1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口、第一天线模块的第三物理天线端口、2个天线模块中的第二天线模块的第二物理天线端口和第二天线模块的第三物理天线端口。
可选的,天线系统包括2个天线模块,2个天线模块中的第一天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,2个天线模块中的第二天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,虚拟天线端口的个数为2,处理单元2002,具体用于:
BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口、第一天线模块的第四物理天线端口、2个天线模块中的第二天线模块的第一物理天线端口和第二天线模块的第三物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[-1,1,1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口、第一天线模块的第三物理天线端口、2个天线模块中的第二天线模块的第二物理天线端口和第二天线模块的第四物理天线端口。
可选的,天线系统包括2个天线模块,虚拟天线端口的个数为4,处理单元2002,具体用于:
BBU将4个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到2个天线模块中的第一天线模块的第一物理天线端口和2个天线模块中的第二天线模块的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1通过权值[1,1]映射到2个天线模块中的第一天线模块的第二物理天线端口和2个天线模块中的第二天线模块的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2通 过权值[1,1]映射到2个天线模块中的第一天线模块的第三物理天线端口和2个天线模块中的第二天线模块的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3通过权值[1,1]映射到2个天线模块中的第一天线模块的第四物理天线端口和2个天线模块中的第二天线模块的第四物理天线端口。
可选的,当一个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同时,处理单元2002,还用于:
对该天线模块中的第一天线阵列产生的波束和第二天线阵列产生的波束进行相位差补偿。
可选的,处理单元2002,具体用于:
设置该天线模块中的第一天线阵列产生的波束的相位和第二天线阵列产生的波束的相位,其中,该天线模块中的第一天线阵列产生的波束的相位比该天线模块中的第二天线阵列产生的波束的相位大360*sin((ET-1)*15/14.4/180*π)*330*Frq/300,其中,ET为该天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角,Frq为物理天线端口的发射信号的频率。
BBU20中的各个单元用于执行上述方法,因此,BBU20的有益效果可以参见上述方法的有益效果,在此不再赘述。
上述各个单元可以指特定应用集成电路(application-specific integrated circuit,简称ASIC)电路,执行一个或多个软件或固件程序的处理器和存储器,集成逻辑电路,和/或其他可以提供上述功能的器件。具体的,获取单元2001可以通过通信接口或接收器执行,处理单元2002可以由处理器执行。
一种情况下,可以采用如图21所示的BBU21实现上述方法,BBU21包括:处理器2101、存储器2102、总线2103和通信接口2104。
处理器2101可以是一个通用中央处理器(central processing unit,简称CPU),微处理器,ASIC,或一个或多个用于控制本发明方案程序执行的集成电路。
存储器2102可以是只读存储器(read-only memory,简称ROM)或可存储静态信息和指令的其他类型的静态存储设备,随机存取存储器(random access memory,简称RAM)或者可存储信息和指令的其他类型的动态存储设备,也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory,简称EEPROM)、只读光盘(compact disc read-only memory,简称CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此。
通信接口2104可以为收发器一类的装置,用于与其他设备通信。
处理器2101、存储器2102和通信接口2104通过总线2103连接,总线2103可包括一通路,在处理器2101、存储器2102和通信接口2104之间传送信息。存储器2102可以是独立存在,通过总线2103与处理器2101相连接。存储器2102也可以和处理器2101集成在一起。
其中,总线2103可以是外设部件互连标准(peripheral component interconnect,简称PCI)总线或扩展工业标准结构(extended industry standard architecture,简称EISA)总线等。该总线可以分为地址总线、数据总线、控制总线等。为便于表示,图21中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。
存储器2102用于存储计算机执行指令,处理器2101通过执行存储器2102存储的计算机执行指令,以执行以下动作:
获取天线系统的架构信息,天线系统包括至少一个天线模块,天线模块包括纵向排列的第一天线阵列和第二天线阵列,第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同或不同;
根据天线系统的架构信息和BBU的虚拟天线端口将虚拟天线端口映射到天线系统中的物理天线端口。
处理器2101通过执行存储器2102存储的计算机执行指令,还可以执行上述方法中的其他步骤。具体可参见上述方法,在此不再赘述。
BBU21中的各个器件用于执行上述方法,因此,BBU21的有益效果可以参见上述方法的有益效果,在此不再赘述。
本发明实施例还提供了一种计算机存储介质,用于储存为上述BBU所用的计算机软件指令,其包含用于执行上述方法实施例所设计的程序。通过执行存储的程序,可以实现虚拟天线端口的映射方法。
尽管在此结合各实施例对本发明进行了描述,然而,在实施所要求保护的本发明过程中,本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书,可理解并实现所述公开实施例的其他变化。在权利要求中,“包括”(comprising)一词不排除其他组成部分或步骤,“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施,但这并不表示这些措施不能组合起来产生良好的效果。
本领域技术人员应明白,本发明的实施例可提供为方法、装置(设备)、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。计算机程序存储/分布在合适的介质中,与其它硬件一起提供或作为硬件的一部分,也可以采用其他分布形式,如通过Internet或其它有线或无线电信系统。
本发明是参照本发明实施例的方法、装置(设备)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管结合具体特征及其实施例对本发明进行了描述,显而易见的,在不脱离本发明的精神和范围的情况下,可对其进行各种修改和组合。相应地,本说明书和附图仅仅是所附权利要求所界定的本发明的示例性说明,且视为已覆盖本发明范围内的任意和所有修改、变化、组合或等同物。显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (14)

  1. 一种天线系统,其特征在于,包括:
    至少一个天线模块,所述天线模块包括纵向排列的第一天线阵列和第二天线阵列;
    与所述至少一个天线模块一一对应的至少一个电调组,所述电调组包括第一电调和第二电调,每个所述天线模块对应的所述电调组中的第一电调与该天线模块中的第一天线阵列连接,用于调整该天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角,每个所述天线模块对应的所述电调组中的第二电调与该天线模块中的第二天线阵列连接,用于调整该天线模块中的第二天线阵列产生的波束的垂直波瓣的下倾角。
  2. 根据权利要求1所述的天线系统,其特征在于,所述天线模块中的第一天线阵列包括纵向排列的N1个天线阵元,所述天线模块中的第二天线阵列包括纵向排列的N2个天线阵元,每个天线阵元包括一个正45度和一个负45度极化阵元,其中,所述第一天线阵列的正45度的N1个极化阵元对应第三物理天线端口,所述第一天线阵列的负45度的N1个极化阵元对应第四物理天线端口,所述第二天线阵列的正45度的N2个极化阵元对应第一物理天线端口,所述第二天线阵列的负45度的N2个极化阵元对应第二物理天线端口,N1、N2均为大于0的整数。
  3. 一种虚拟天线端口的映射方法,其特征在于,包括:
    基带处理单元BBU获取天线系统的架构信息,所述天线系统包括至少一个天线模块,所述天线模块包括纵向排列的第一天线阵列和第二天线阵列,所述第一天线阵列产生的波束的垂直波瓣的下倾角与所述第二天线阵列产生的波束的垂直波瓣的下倾角相同或不同;
    所述BBU根据所述天线系统的架构信息和BBU的虚拟天线端口将所述虚拟天线端口映射到所述天线系统中的物理天线端口。
  4. 根据权利要求3所述的方法,其特征在于,所述天线模块中的第一天线阵列包括纵向排列的N1个天线阵元,所述天线模块中的第二天线阵列包括纵向排列的N2个天线阵元,每个天线阵元包括一个正45度和一个负45度极化阵元,其中,所述第一天线阵列的正45度的N1个极化阵元对应第三物理天线端口,所述第一天线阵列的负45度的N1个极化阵元对应第四物理天线端口,所述第二天线阵列的正45度的N2个极化阵元对应第一物理天线端口,所述第二天线阵列的负45度的N2个极化阵元对应第二物理天线端口,N1、N2均为大于0的整数。
  5. 根据权利要求4所述的方法,其特征在于,所述天线系统包括一个天线模块,所述天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,所述虚拟天线端口的个数为2,所述BBU根据所述天线系统的架构信息和BBU的虚拟天线端口将所述虚拟天线端口映射到所述天线系统中的物理天线端口,包括:
    所述BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到所述天线模块中的第一物理天线端口和第三物理天线端口;将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1]映射到所述天线模块中的第二物理天线端口和第四物理天线端口。
  6. 根据权利要求4所述的方法,其特征在于,所述天线系统包括一个天线模块,所述天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,所述虚拟天线端口的个数为2,所述BBU根据所述天线系统的架构信息和BBU的虚拟天线端口将所述虚拟天线端口映射到所述天线系统中的物理天线端口,包括:
    所述BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到所述天线模块中的第一物理天线端口和第四物理天线端口; 将2个虚拟天线端口中的虚拟天线端口1通过权值[1,-1]映射到所述天线模块中的第二物理天线端口和第三物理天线端口。
  7. 根据权利要求4所述的方法,其特征在于,所述天线系统包括一个天线模块,所述虚拟天线端口的个数为4,所述BBU根据所述天线系统的架构信息和BBU的虚拟天线端口将所述虚拟天线端口映射到所述天线系统中的物理天线端口,包括:
    所述BBU将4个虚拟天线端口中的虚拟天线端口0映射到所述天线模块中的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1映射到所述天线模块中的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2映射到所述天线模块中的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3映射到所述天线模块中的第四物理天线端口。
  8. 根据权利要求4所述的方法,其特征在于,所述天线系统包括2个天线模块,每个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,所述虚拟天线端口的个数为2,所述BBU根据所述天线系统的架构信息和BBU的虚拟天线端口将所述虚拟天线端口映射到所述天线系统中的物理天线端口,包括:
    所述BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到所述2个天线模块中的第一天线模块的第一物理天线端口、所述第一天线模块的第三物理天线端口、所述2个天线模块中的第二天线模块的第一物理天线端口和所述第二天线模块的第三物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[1,1,1,1]映射到所述2个天线模块中的第一天线模块的第二物理天线端口、所述第一天线模块的第四物理天线端口、所述2个天线模块中的第二天线模块的第二物理天线端口和所述第二天线模块的第四物理天线端口。
  9. 根据权利要求4所述的方法,其特征在于,所述天线系统包括2个天线模块,每个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,所述虚拟天线端口的个数为2,所述BBU根据所述天线系统的架构信息和BBU的虚拟天线端口将所述虚拟天线端口映射到所述天线系统中的物理天线端口,包括:
    所述BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到所述2个天线模块中的第一天线模块的第一物理天线端口、所述第一天线模块的第四物理天线端口、所述2个天线模块中的第二天线模块的第一物理天线端口和所述第二天线模块的第四物理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[-1,1,-1,1]映射到所述2个天线模块中的第一天线模块的第二物理天线端口、所述第一天线模块的第三物理天线端口、所述2个天线模块中的第二天线模块的第二物理天线端口和所述第二天线模块的第三物理天线端口。
  10. 根据权利要求4所述的方法,其特征在于,所述天线系统包括2个天线模块,所述2个天线模块中的第一天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角不同,所述2个天线模块中的第二天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角和第二天线阵列产生的波束的垂直波瓣的下倾角相同,所述虚拟天线端口的个数为2,所述BBU根据所述天线系统的架构信息和BBU的虚拟天线端口将所述虚拟天线端口映射到所述天线系统中的物理天线端口,包括:
    所述BBU将2个虚拟天线端口中的虚拟天线端口0通过权值[1,1,1,1]映射到所述2个天线模块中的第一天线模块的第一物理天线端口、所述第一天线模块的第四物理天线端口、所述2个天线模块中的第二天线模块的第一物理天线端口和所述第二天线模块的第三物 理天线端口,将2个虚拟天线端口中的虚拟天线端口1通过权值[-1,1,1,1]映射到所述2个天线模块中的第一天线模块的第二物理天线端口、所述第一天线模块的第三物理天线端口、所述2个天线模块中的第二天线模块的第二物理天线端口和所述第二天线模块的第四物理天线端口。
  11. 根据权利要求4所述的方法,其特征在于,所述天线系统包括2个天线模块,所述虚拟天线端口的个数为4,所述BBU根据所述天线系统的架构信息和BBU的虚拟天线端口将所述虚拟天线端口映射到所述天线系统中的物理天线端口,包括:
    所述BBU将4个虚拟天线端口中的虚拟天线端口0通过权值[1,1]映射到所述2个天线模块中的第一天线模块的第一物理天线端口和所述2个天线模块中的第二天线模块的第一物理天线端口,将4个虚拟天线端口中的虚拟天线端口1通过权值[1,1]映射到所述2个天线模块中的第一天线模块的第二物理天线端口和所述2个天线模块中的第二天线模块的第二物理天线端口,将4个虚拟天线端口中的虚拟天线端口2通过权值[1,1]映射到所述2个天线模块中的第一天线模块的第三物理天线端口和所述2个天线模块中的第二天线模块的第三物理天线端口,将4个虚拟天线端口中的虚拟天线端口3通过权值[1,1]映射到所述2个天线模块中的第一天线模块的第四物理天线端口和所述2个天线模块中的第二天线模块的第四物理天线端口。
  12. 根据权利要求3-5、7-8、10-11中的任一项所述的方法,其特征在于,当一个天线模块中的第一天线阵列产生的波束的垂直波瓣的下倾角与第二天线阵列产生的波束的垂直波瓣的下倾角相同时,所述方法还包括:
    所述BBU对该天线模块中的第一天线阵列产生的波束和第二天线阵列产生的波束进行相位差补偿。
  13. 根据权利要求12所述的方法,其特征在于,对该天线模块 中的第一天线阵列产生的波束和第二天线阵列产生的波束进行相位差补偿,包括:
    所述BBU设置该天线模块中的第一天线阵列产生的波束的相位和第二天线阵列产生的波束的相位,其中,该天线模块中的第一天线阵列产生的波束的相位比该天线模块中的第二天线阵列产生的波束的相位大360*sin((ET-1)*15/14.4/180*π)*330*Frq/300,其中,ET为该天线模块中的第一天线阵列和第二天线阵列产生的波束的垂直波瓣的下倾角,Frq为物理天线端口的发射信号的频率。
  14. 一种基带处理单元BBU,其特征在于,包括:处理器、存储器、总线和通信接口;
    所述存储器用于存储计算机执行指令,所述处理器与所述存储器通过所述总线连接,所述处理器通过执行所述存储器存储的所述计算机执行指令,以实现如权利要求3-13中任一项所述的方法。
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