WO2016106575A1 - 信道空间特征信息获取方法及基站 - Google Patents

信道空间特征信息获取方法及基站 Download PDF

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Publication number
WO2016106575A1
WO2016106575A1 PCT/CN2014/095620 CN2014095620W WO2016106575A1 WO 2016106575 A1 WO2016106575 A1 WO 2016106575A1 CN 2014095620 W CN2014095620 W CN 2014095620W WO 2016106575 A1 WO2016106575 A1 WO 2016106575A1
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WIPO (PCT)
Prior art keywords
base station
information
channel space
measured
space feature
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PCT/CN2014/095620
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English (en)
French (fr)
Inventor
毕晓艳
陈大庚
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020177021408A priority Critical patent/KR101907053B1/ko
Priority to JP2017535390A priority patent/JP6542370B2/ja
Priority to PCT/CN2014/095620 priority patent/WO2016106575A1/zh
Priority to BR112017014279-1A priority patent/BR112017014279B1/pt
Priority to CN201480084318.0A priority patent/CN107113646B/zh
Priority to EP14909386.6A priority patent/EP3232707B1/en
Priority to ES14909386T priority patent/ES2726150T3/es
Publication of WO2016106575A1 publication Critical patent/WO2016106575A1/zh
Priority to US15/637,398 priority patent/US10505611B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/391—Modelling the propagation channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity 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
    • H04B7/0615—Diversity 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
    • H04B7/0619—Diversity 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 using feedback from receiving side
    • H04B7/0621—Feedback content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0625—Transmitter arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas

Definitions

  • the embodiments of the present invention relate to communications technologies, and in particular, to a channel space feature information acquiring method and a base station.
  • Massive Multiple Input Multiple Output Massive MIMO
  • the number of base station antennas will increase dramatically in the future, making the base station have stronger multipath resolution and finer and narrower beam transmission. .
  • the Massive MIMO technology can be introduced into the mobile communication system, and the base station can better distinguish the advantages of multipath at different angles for efficient data transmission.
  • the embodiment of the invention provides a method for acquiring channel space feature information and a base station, which are used to solve the technical problem that the channel space feature cannot be known in the prior art.
  • a first aspect of the embodiments of the present invention provides a method for acquiring channel space feature information, including:
  • the first base station sends a channel space feature request and an identifier of the user equipment UE to be measured to the second base station, where the channel space feature request is used to indicate that the second base station performs channel space feature information on the UE to be measured. measuring;
  • the first base station receives channel space feature indication information that is sent by the multiple second base stations, where the channel space feature indication information carries channel space feature information of the UE to be measured, where the channel space feature information includes :
  • the beam of the second base station reaches the angle information and the spatial strength information of the UE to be measured.
  • the method further includes:
  • the first base station determines, according to the channel space feature indication information and the spatial channel quality information sent by each of the second base stations, that when the second base station needs to perform data transmission on the UE to be measured, the first base station according to the channel space The feature indication information and the spatial channel quality information, and selecting at least one second base station from the plurality of second base stations as the data transmission base station.
  • the first base station according to the channel space feature indication information and the spatial channel quality information, Selecting at least one second base station as the data transmission base station among the second base stations includes:
  • the first base station selects, in the plurality of second base stations, the second base station whose channel space feature indication information is a direct path and whose spatial channel quality parameter is greater than a preset threshold as a data transmission base station.
  • the channel space feature indication information is channel space main path feature indication information .
  • the information about the angle of the beam of the second base station to the UE to be measured includes: the second And obtaining, by the beam of the base station, the horizontal angle information of the UE to be measured and the vertical angle information of the beam of the second base station to the UE to be measured.
  • the spatial strength information includes: spatial strength level information, or whether the spatial strength is greater than a preset threshold. information.
  • a second aspect of the embodiments of the present invention provides a method for acquiring channel space feature information, including:
  • the second base station performs measurement on the to-be-measured UE according to the channel space feature request, and acquires channel space feature information;
  • the second base station sends channel space feature indication information to the first base station, where the channel space feature indication information carries channel space feature information of the UE to be measured;
  • the channel spatial feature information includes: angle information and spatial strength information of the second base station's beam reaching the UE to be measured.
  • the channel space feature indication information is channel space main path feature indication information.
  • the information that the beam of the second base station reaches the UE to be measured includes: the second And obtaining, by the beam of the base station, the horizontal angle information of the UE to be measured and the vertical angle information of the beam of the second base station to the UE to be measured.
  • the spatial strength information includes: spatial strength level information, or whether the spatial strength is greater than a preset threshold. information.
  • a third aspect of the embodiments of the present invention provides a base station, where the base station is a first base station, including:
  • a sending module configured to send a channel space feature request and an identifier of the user equipment UE to be measured to the second base station, where the channel space feature request is used to indicate that the second base station performs channel space on the UE to be measured Feature information measurement;
  • a receiving module configured to receive channel space feature indication information that is sent by the multiple second base stations, where the channel space feature indication information carries channel space feature information of the UE to be measured, where the channel space feature information includes : The beam of the second base station reaches the angle information and the spatial strength information of the UE to be measured.
  • the base station further includes:
  • a determining module configured to determine, according to the channel space feature indication information and the spatial channel quality information sent by each of the second base stations, when the second base station needs to perform data transmission on the UE to be measured, according to the channel space feature indication information and space Channel quality information, selecting at least one second base station from the plurality of second base stations as a data transmission base station.
  • the determining module is specifically configured to select the channel space feature in the multiple second base stations
  • the second base station whose indication information is a direct path and whose spatial channel quality parameter is greater than a preset threshold is used as a data transmission base station.
  • the channel space feature indication information is channel space main path feature indication information.
  • the beam information of the second base station that arrives at the UE to be measured includes: The horizontal angle information of the beam of the second base station reaching the UE to be measured and the vertical angle information of the beam of the second base station reaching the UE to be measured.
  • the spatial strength information includes: spatial strength level information, or whether the spatial strength is greater than a preset threshold. information.
  • a fourth aspect of the embodiments of the present invention provides a base station, where the base station is a second base station, including:
  • a receiving module configured to receive a channel space feature request sent by the first base station and an identifier of the user equipment UE to be measured
  • a measurement module configured to perform measurement on the UE to be measured according to the channel space feature request, and acquire channel space feature information
  • a sending module configured to send channel space feature indication information to the first base station, where the channel space feature indication information carries channel space feature information of the UE to be measured;
  • the channel spatial feature information includes: angle information and spatial strength information of the second base station's beam reaching the UE to be measured.
  • the channel space feature indication information is channel space main path feature indication information.
  • the information about the angle of the second base station that arrives at the UE to be measured includes: the second And obtaining, by the beam of the base station, the horizontal angle information of the UE to be measured and the vertical angle information of the beam of the second base station to the UE to be measured.
  • the spatial strength information includes: spatial strength level information, or whether the spatial strength is greater than a preset threshold. information.
  • a fifth aspect of the embodiments of the present invention provides a base station, where the base station is a first base station, including:
  • a transmitter configured to send a channel space feature request and an identifier of the user equipment UE to be measured to the second base station, where the channel space feature request is used to indicate that the second base station performs channel space on the UE to be measured Feature information measurement;
  • a receiver configured to receive channel space feature indication information that is sent by the multiple second base stations, where the channel space feature indication information carries channel space feature information of the UE to be measured, where the channel space feature information includes : the beam of the second base station reaches the corner of the UE to be measured Degree information and space intensity information.
  • the base station further includes:
  • a processor configured to determine, according to the channel space feature indication information and the spatial channel quality information sent by each of the second base stations, when the second base station needs to perform data transmission on the UE to be measured, according to the channel space feature indication information and space Channel quality information, selecting at least one second base station from the plurality of second base stations as a data transmission base station.
  • the processor is configured to select the channel space feature in the multiple second base stations
  • the second base station whose indication information is a direct path and whose spatial channel quality parameter is greater than a preset threshold is used as a data transmission base station.
  • the channel space feature indication information is channel space main path feature indication information .
  • the information that the beam of the second base station reaches the UE to be measured includes: the second And obtaining, by the beam of the base station, the horizontal angle information of the UE to be measured and the vertical angle information of the beam of the second base station to the UE to be measured.
  • the spatial strength information includes: spatial strength level information, or whether the spatial strength is greater than a preset threshold. information.
  • a sixth aspect of the embodiments of the present invention provides a base station, where the base station is a second base station, including:
  • a receiver configured to receive a channel space feature request sent by the first base station and an identifier of the user equipment UE to be measured
  • a processor configured to perform measurement on the UE to be measured according to the channel space feature request, and acquire channel space feature information
  • a transmitter configured to send channel space feature indication information to the first base station, where the channel space feature indication information carries channel space feature information of the UE to be measured;
  • the channel spatial feature information includes: angle information and spatial strength information of the second base station's beam reaching the UE to be measured.
  • the channel space feature indication information is channel space main path feature indication information.
  • the information that the beam of the second base station reaches the UE to be measured includes: the second And obtaining, by the beam of the base station, the horizontal angle information of the UE to be measured and the vertical angle information of the beam of the second base station to the UE to be measured.
  • the spatial strength information includes: spatial strength level information, or whether the spatial strength is greater than a preset threshold. information.
  • the first base station sends a channel space feature request and an identifier of the UE to be measured to the second base station to indicate that the second base station measures the spatial characteristics of the UE to be measured.
  • the second base station returns the channel spatial feature indication information including the channel spatial feature information of the UE to be measured
  • the channel that the first base station and the second base station communicate with the UE can obtain the channel space feature information, and can It is good to distinguish multipaths of different angles or directions, so as to utilize this advantage for data transmission, which also achieves better avoidance of interference between multiple users during data transmission, and applies Massive MIMO technology to many applications.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for acquiring channel space feature information provided by the present invention
  • Embodiment 2 is a schematic flowchart of Embodiment 2 of a method for acquiring channel space feature information provided by the present invention
  • FIG. 3 is a schematic structural diagram of a homogeneous system in a multi-base station cooperation scenario according to Embodiment 3 of the method for acquiring channel space feature information provided by the present invention
  • FIG. 4 is a schematic structural diagram of a heterogeneous system in a multi-base station cooperation scenario according to Embodiment 4 of the method for acquiring channel space feature information provided by the present invention
  • FIG. 5 is a schematic flowchart of Embodiment 5 of a method for acquiring channel space feature information according to the present invention
  • FIG. 6 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
  • FIG. 8 is a schematic structural diagram of Embodiment 3 of a base station according to the present invention.
  • FIG. 9 is a schematic structural diagram of Embodiment 4 of a base station according to the present invention.
  • FIG. 10 is a schematic structural diagram of Embodiment 5 of a base station according to the present invention.
  • FIG. 1 is a schematic flowchart of Embodiment 1 of a method for acquiring channel space feature information according to the present invention. As shown in FIG. 1 , the method includes:
  • the first base station sends a channel space feature request and an identifier of the UE to be measured to the multiple second base stations, respectively.
  • the channel space feature request is used to instruct the second base station to perform channel space feature information measurement on the UE to be measured. That is, after receiving the channel space feature request, each second base station starts to measure channel space feature information of the UE to be measured.
  • the second base station can measure the UE by monitoring an uplink sounding signal sent by the UE.
  • Channel space characteristic information For example, in a Frequency Division Duplexing (FDD) or Time Division Duplexing (TDD) system, the second base station can measure the UE by monitoring an uplink sounding signal sent by the UE.
  • FDD Frequency Division Duplexing
  • TDD Time Division Duplexing
  • the first base station receives the channel space feature indication information that is sent by the multiple second base stations, where the channel space feature indication information carries the channel space feature information of the UE to be measured.
  • the foregoing channel space feature information includes: angle information and spatial strength information of a beam of the second base station reaching the UE to be measured.
  • the second base station acquires the angle information of the second base station to the UE to be measured, and may be that the second base station directly measures the angle at which the acquiring beam reaches the UE to be measured, or may be a measurement acquisition spatial angle spectrum. It is estimated that the spatial angle spectrum estimation includes more information. Good, the specific beam arrival angle information can be further obtained according to the spatial angle spectrum estimation.
  • the channel space feature indication information may be a channel space main path (Dominate Path) feature indication information, of course, not limited thereto, and may also be a high-intensity diameter feature indication information.
  • Dominate Path Channel Path
  • the space strength information is spatial main path strength information.
  • the embodiment of the present invention is mainly directed to a specific implementation manner after the Massive MIMO technology is introduced into a multi-base station cooperation solution.
  • Massive MIMO technology introduces a system of multi-base station cooperation and UE communication
  • the base station can better distinguish multipaths of different angles or directions, especially when the channel between the base station and some UEs exhibits at certain angles or directions.
  • this feature can be utilized to perform data transmission very efficiently.
  • the beamforming based on some strong multipath energy directions has the following advantages in the implementation process: (1) the channel acquisition mode is simple, specifically, as long as the base station estimates the angle with the Dominate Path channel Or the direction, beamforming can be performed; in particular, the channel acquisition method is generally obtained based on the long-term response of the channel, and therefore, does not require high-density transient signal acquisition pilot, and has such a Dominate Path channel.
  • the feature can also be obtained by the UE's uplink and downlink channel reciprocity to the base station, and the pilot overhead is small.
  • the beamforming scheme based on the above channel acquisition method can well control the beam direction and beamwidth of the base station, thereby well controlling transmission interference between multiple users, that is, avoiding multiple base stations to Interference between the downlink signals of the UE.
  • the multi-base station cooperative transmission mode is most suitable.
  • the first base station and the second base station can obtain the channel space feature information from the channel that the UE communicates with, wherein the first base station obtains the angle information of the beam of each second base station after reaching the UE to be measured, Better control during subsequent data transmission to avoid interference between multiple downlink signals from multiple base stations to the UE.
  • the first base station sends the channel space feature request and the identifier of the UE to be measured to the second base station to indicate that the second base station measures the spatial feature information measurement of the UE to be measured, and the second base station sends the second base station to the first base station.
  • the channel communicated by the first base station and the second base station and the UE can acquire the channel space feature information, so that the angles or directions can be better distinguished.
  • the first base station may determine, according to the channel space feature indication information and the spatial channel quality information sent by each second base station, When the second base station needs to select data transmission for the UE to be measured, the first base station selects at least one second base station from the plurality of second base stations as the data transmission base station according to the channel space feature indication information and the spatial channel quality information. Thereafter, the first base station and the second base station as the data transmission base station cooperate to perform data transmission.
  • the first base station determines whether the second base station needs to select the data transmission of the UE to be measured, and is determined according to the spatial strength information in the channel space feature indication information sent by the second base station, for example, if the multiple second base stations are used. If the received spatial strength information meets the preset condition, the first base station selects a data transmission base station from the plurality of second base stations, and if the spatial strength information sent by the multiple second base stations does not satisfy the preset condition, then Select the data transmission base station.
  • the second base station is a cooperative base station of the first base station, and the first base station and each second base station transmit information through a communication interface. It should be noted that the channel interface feature indication information is configured on the communication interface.
  • the first base station is a base station capable of determining a data transmission base station
  • the second base station is an alternate base station of the data transmission base station.
  • the second base station that meets the preset condition may be selected as the data transmission base station according to the channel space feature indication and the channel quality information sent by the second base station, but is not limited thereto.
  • the first base station selects at least one second base station from the plurality of second base stations as the data transmission base station according to the channel space feature indication information and the spatial channel quality information, specifically: the first base station is in the foregoing
  • the second base station selects the channel base feature indication information as a line of sight (LOS), and the second base station whose spatial channel quality parameter is greater than a preset threshold is used as the data transmission base station.
  • LOS line of sight
  • the spatial channel quality parameter may be Reference Signal Receiving Quality (RSRQ).
  • RSRQ Reference Signal Receiving Quality
  • the angle information of the second base station that reaches the UE to be measured includes: the horizontal angle information of the second base station's beam reaching the UE to be measured, and the second base station's beam reaching the vertical of the UE to be measured. Angle information.
  • the spatial strength information includes: spatial strength level information, or comparison information of whether the spatial strength is greater than a preset threshold. In the specific implementation process, you can pre-configure the information about whether the space strength is greater than the preset threshold. If the space strength level information is used, the parameters of the different levels are preset in advance. For the comparison information of the preset threshold, the preset threshold is configured in advance, and the preset threshold is used to determine whether the spatial strength is strong or weak.
  • the space strength information may specifically include: space main path strength level information, or whether the spatial main path strength is greater than a preset threshold comparison information.
  • the above communication interface is an X2 interface.
  • the channel space feature is a slow change feature, and the millisecond (ms) level or even longer is more suitable for transmission by using the X2 interface. Of course, it is not limited thereto.
  • FIG. 2 is a schematic flowchart of Embodiment 2 of a method for acquiring channel space feature information provided by the present invention.
  • FIG. 3 is a schematic structural diagram of a homogeneous system in a multi-base station cooperation scenario according to Embodiment 3 of the method for acquiring channel space feature information provided by the present invention
  • the circles in Figures 3 and 4 represent the coverage of the base station.
  • the first base station is a serving base station (Serving eNodeB) 01
  • the second base station is a base station (Neighboring eNodeB) 02 adjacent to the first base station.
  • Both the serving base station 01 and the base station 02 adjacent to the base station can exchange information with the UE 03.
  • the "adjacent base station" in FIG. 2 represents one of a plurality of neighboring base stations, and the X2 interface is taken as an example.
  • the method includes:
  • the serving base station sends a channel space feature request and an identifier of the UE to be measured to multiple neighboring base stations through an X2 interface.
  • the plurality of neighboring base stations are cooperative base stations of the serving base station.
  • the multiple neighboring base stations After receiving the foregoing channel space feature request and the identifier of the UE to be measured, the multiple neighboring base stations start to perform channel space feature information measurement on the UE to be measured. Specifically, the channel spatial feature information of the UE may be measured by monitoring uplink sounding information sent by the UE.
  • the multiple neighboring base stations carry the channel space feature information of the UE to be tested in the channel space.
  • the indication information is sent to the serving base station through the X2 interface.
  • the neighboring base station sends the channel space feature information of the UE to be tested on the X2 interface according to the format of the “channel space feature indication” information.
  • the serving base station determines, according to the channel space feature indication information and the spatial channel quality information sent by the neighboring base station, whether the neighboring base station needs to select the base station to perform data transmission on the measured UE. If yes, execute S205, and if not, end.
  • the serving base station selects at least one of the plurality of neighboring base stations as the data transmission base station according to the channel space feature indication information and the other spatial channel quality information sent by the multiple neighboring base stations.
  • the serving base station is generally a base station (eNodeB) when the UE accesses, and the serving base station is responsible for control information transmission, broadcast information transmission, and handover of the UE.
  • eNodeB base station
  • the first base station is a macro eNodeB 04
  • the second base station is a pico base station (Pico eNodeB) 05 under the coverage of the first base station, and both the macro base station 04 and the pico base station 05 can Interact with UE03.
  • the serving base station in the embodiment shown in FIG. 2 is replaced with a Macro eNodeB, and the neighbor base station is replaced with a Pico eNodeB.
  • a macro base station is generally a base station (eNodeB) when the UE accesses, and the serving base station is responsible for control information transmission, broadcast information transmission, and handover of the UE.
  • FIG. 5 is a schematic flowchart of Embodiment 5 of a method for acquiring channel space feature information according to the present invention. The method is performed by the second base station, and the method includes:
  • the second base station receives the channel space feature request sent by the first base station and the identifier of the UE to be measured.
  • the second base station performs measurement according to the channel space feature request, and acquires channel space feature information.
  • the second base station sends, to the first base station, channel space feature indication information, where the channel space feature indication information carries channel space feature information of the UE to be measured.
  • the channel space feature information includes: angle information and spatial strength information of a beam of the second base station reaching the UE to be measured.
  • the first base station considers that it is necessary to select the second base station as
  • the data transmission base station selects the data transmission base station from the plurality of second base stations according to the channel space characteristic indication information and in combination with other spatial channel quality information.
  • the second base station is a cooperative base station of the first base station.
  • the first base station and the second base station transmit information through a communication interface, and the channel interface is configured with channel space feature indication information.
  • the second base station performs measurement on the spatial feature information of the UE to be measured according to the channel space feature request sent by the first base station and the identifier of the UE to be measured, and returns channel space feature information including the UE to be measured to the first base station.
  • Channel space feature indication information At this time, the channel communicated by the first base station and the second base station and the UE can acquire channel space feature information, and can better distinguish multipaths of different angles or directions, thereby utilizing the advantage to perform data. Transmission, which also achieves better avoidance of interference between multiple users during data transmission, and applies Massive MIMO technology to a system of multi-base station cooperation and UE communication.
  • the channel space feature indication information may be a channel space main path (Dominate Path) feature indication information, of course, not limited thereto, and may also be a high-intensity diameter feature indication information.
  • Dominate Path Channel Path
  • the space strength information is spatial main path strength information.
  • the angle information of the second base station that reaches the UE to be measured includes: the horizontal angle information of the second base station's beam reaching the UE to be measured, and the second base station's beam reaching the vertical of the UE to be measured. Angle information.
  • the spatial strength information includes: spatial strength level information, or comparison information of whether the spatial strength is greater than a preset threshold. In the specific implementation process, you can pre-configure the information about whether the space strength is greater than the preset threshold. If the space strength level information is used, the parameters of the different levels are preset in advance. For the comparison information of the preset threshold, the preset threshold is configured in advance, and the preset threshold is used to determine whether the spatial strength is strong or weak.
  • the above communication interface is an X2 interface.
  • the first base station is a serving base station (Serving eNodeB)
  • the second base station is a base station (Neighboring eNodeB) adjacent to the first base station.
  • the first base station is a macro base station (Macro eNodeB), and the second base station is a pico base station (Pico eNodeB) under the coverage of the first base station.
  • Mocro eNodeB macro base station
  • Pico eNodeB pico base station
  • FIG. 6 is a schematic structural diagram of Embodiment 1 of a base station according to the present disclosure.
  • the base station is the foregoing first base station, and specifically includes: a sending module 601 and a receiving module 602, where:
  • the sending module 601 is configured to send a channel space feature request and an identifier of the user equipment UE to be measured to the second base station, where the channel space feature request is used to indicate that the second base station performs channel on the UE to be measured. Spatial feature information measurement.
  • the receiving module 602 is configured to receive channel space feature indication information that is sent by the multiple second base stations, where the channel space feature indication information carries channel space feature information of the UE to be measured, where the channel space feature information
  • the method includes: the angle information of the second base station arrives at the UE to be measured, and the spatial strength information.
  • the first base station sends the channel space feature request and the identifier of the UE to be measured to the second base station to indicate that the second base station measures the spatial feature information measurement of the UE to be measured, and the second base station sends the second base station to the first base station.
  • the channel communicated by the first base station and the second base station and the UE can acquire the channel space feature information, so that the angles or directions can be better distinguished.
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
  • the base station further includes: a determining module 603, configured to: according to the channel space feature indication information sent by each second base station, And determining, by the spatial channel quality information, when the second base station needs to perform data transmission on the UE to be measured, selecting at least one second base station from the plurality of second base stations as the data transmission according to the channel space feature indication information and the spatial channel quality information.
  • a determining module 603 configured to: according to the channel space feature indication information sent by each second base station, And determining, by the spatial channel quality information, when the second base station needs to perform data transmission on the UE to be measured, selecting at least one second base station from the plurality of second base stations as the data transmission according to the channel space feature indication information and the spatial channel quality information.
  • the determining module 603 selects, as the data transmission base station, the second base station whose channel space feature indication information is a direct path and the spatial channel quality parameter is greater than a preset threshold.
  • the channel space feature indication information is channel space main path feature indication information.
  • the angle information of the second base station that arrives at the UE to be measured includes: the horizontal angle information of the second base station's beam reaching the to-be-measured UE and the second base station's beam reaching the to-be-measured UE Vertical angle information.
  • the spatial strength information includes: spatial strength level information, or comparison information of whether the spatial strength is greater than a preset threshold.
  • FIG. 8 is a schematic structural diagram of Embodiment 3 of a base station according to the present invention.
  • the base station in this embodiment is the foregoing second base station, and specifically includes: a receiving module 801, a measuring module 802, and a sending module 803, where:
  • the receiving module 801 is configured to receive a channel space feature request sent by the first base station and an identifier of the user equipment UE to be measured.
  • the measurement module 802 is configured to perform measurement on the UE to be measured according to the channel space feature request, and acquire channel space feature information.
  • the sending module 803 is configured to send channel space feature indication information to the first base station, where the channel space feature indication information carries channel space feature information of the UE to be measured.
  • the channel spatial feature information includes: angle information and spatial strength information of the second base station's beam reaching the UE to be measured.
  • the second base station performs measurement on the spatial feature information of the UE to be measured according to the channel space feature request sent by the first base station and the identifier of the UE to be measured, and returns channel space feature information including the UE to be measured to the first base station.
  • Channel space feature indication information At this time, the channel communicated by the first base station and the second base station and the UE can acquire channel space feature information, and can better distinguish multipaths of different angles or directions, thereby utilizing the advantage to perform data. Transmission, which also achieves better avoidance of interference between multiple users during data transmission, and applies Massive MIMO technology to a system of multi-base station cooperation and UE communication.
  • channel space feature indication information is channel space main path feature indication information.
  • the angle information of the second base station that arrives at the UE to be measured includes: the horizontal angle information of the second base station's beam reaching the to-be-measured UE and the second base station's beam reaching the to-be-measured UE Vertical angle information.
  • the spatial strength information includes: spatial strength level information, or comparison information of whether the spatial strength is greater than a preset threshold.
  • FIG. 9 is a schematic structural diagram of Embodiment 4 of a base station according to the present invention.
  • the base station in this embodiment is the foregoing first base station, and specifically includes: a transmitter 901 and a receiver 902, where:
  • the transmitter 901 is configured to send a channel space feature request and an identifier of the user equipment UE to be measured to the second base station, where the channel space feature request is used to indicate that the second base station performs channel on the UE to be measured. Spatial feature information measurement.
  • the receiver 902 is configured to receive channel space feature indication information sent by the multiple second base stations, where
  • the channel space feature indication information carries the channel space feature information of the UE to be measured, where the channel space feature information includes: angle information and spatial strength information of the second base station beam reaching the UE to be measured .
  • the first base station sends the channel space feature request and the identifier of the UE to be measured to the second base station to indicate that the second base station measures the spatial feature information measurement of the UE to be measured, and the second base station sends the second base station to the first base station.
  • the channel communicated by the first base station and the second base station and the UE can acquire the channel space feature information, so that the angles or directions can be better distinguished.
  • the base station further includes: a processor 903, configured to determine, according to the channel space feature indication information and the spatial channel quality information sent by each second base station, when the second base station needs to perform measurement data transmission by the UE, And selecting at least one second base station from the plurality of second base stations as the data transmission base station according to the channel space feature indication information and the spatial channel quality information.
  • a processor 903 configured to determine, according to the channel space feature indication information and the spatial channel quality information sent by each second base station, when the second base station needs to perform measurement data transmission by the UE, And selecting at least one second base station from the plurality of second base stations as the data transmission base station according to the channel space feature indication information and the spatial channel quality information.
  • the processor 903 is specifically configured to select, as the data transmission base station, the second base station that selects the channel space feature indication information as a direct path and the spatial channel quality parameter is greater than a preset threshold.
  • the channel space feature indication information may be channel space main path feature indication information.
  • the angle information of the second base station that arrives at the UE to be measured includes: the horizontal angle information of the second base station's beam reaching the to-be-measured UE and the second base station's beam reaching the to-be-measured UE Vertical angle information.
  • the spatial strength information includes: spatial strength level information, or comparison information of whether the spatial strength is greater than a preset threshold.
  • the base station is used to perform the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
  • Embodiment 5 of a base station is the foregoing second base station, and specifically includes: a receiver 110, a processor 111, and a transmitter 112, where:
  • the receiver 110 is configured to receive a channel space feature request sent by the first base station and an identifier of the user equipment UE to be measured.
  • the processor 111 is configured to perform measurement on the UE to be measured according to the channel space feature request Quantity, obtain channel space feature information.
  • the transmitter 112 is configured to send channel space feature indication information to the first base station, where the channel space feature indication information carries channel space feature information of the UE to be measured.
  • the channel spatial feature information includes: angle information and spatial strength information of the second base station's beam reaching the UE to be measured.
  • the base station is used to perform the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the channel space feature indication information may be channel space main path feature indication information.
  • the angle information of the second base station that arrives at the UE to be measured includes: the horizontal angle information of the second base station's beam reaching the to-be-measured UE and the second base station's beam reaching the to-be-measured UE Vertical angle information.
  • the spatial strength information includes: spatial strength level information, or comparison information of whether the spatial strength is greater than a preset threshold.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明实施例提供一种信道空间特征信息获取方法及基站，该方法包括：第一基站分别向多个第二基站发送信道空间特征请求和待测量用户设备UE的标识，其中所述信道空间特征请求用于指示所述第二基站对所述待测量UE进行信道空间特征信息测量；第一基站接收所述多个第二基站发送的信道空间特征指示信息，信道空间特征指示信息中携带待测量UE的信道空间特征信息。本发明实施例中，第一基站、第二基站与UE通信的信道都可以获取信道空间特征信息，能够更好地分辨不同角度或方向的多径，从而利用这种优势进行数据传输，这样也实现了在数据传输过程中更好地避免多用户之间的干扰，很好地将Massive MIMO技术应用到多基站协作与UE通信的***中。

Description

信道空间特征信息获取方法及基站 技术领域
本发明实施例涉及通信技术，尤其涉及一种信道空间特征信息获取方法及基站。
背景技术
随着大规模多输入多输出(Massive Multiple Input Multiple Output，简称Massive MIMO)技术的引入，未来基站天线数目会急剧增加，使得基站具有更强的多径分辨能力和更精细，更窄的波束传输。
经过研究发现，可以将Massive MIMO技术引入移动通信***，利用基站能够更好分辨不同角度的多径的优势进行有效的数据传输。
但是，将Massive MIMO技术应用到多基站协作与用户设备(User Equipment，简称UE)通信的***中，需要获知精度较高地信道空间特征，但是采用现有技术无法获知信道空间特征。
发明内容
本发明实施例提供一种信道空间特征信息获取方法及基站，用于解决现有技术无法获知信道空间特征的技术问题。
本发明实施例第一方面提供一种信道空间特征信息获取方法，包括：
第一基站分别向多个第二基站发送信道空间特征请求和待测量用户设备UE的标识，其中所述信道空间特征请求用于指示所述第二基站对所述待测量UE进行信道空间特征信息测量；
所述第一基站接收所述多个第二基站发送的信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息，其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
结合第一方面，在第一方面的第一种可能的实施方式中，所述第一基站接收所述多个第二基站发送的信道空间特征指示信息之后，还包括：
所述第一基站根据各所述第二基站发送的所述信道空间特征指示信息和空间信道质量信息，确定需要第二基站对待测量UE进行数据传输时，所述第一基站根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站。
结合第一方面的第一种可能的实施方式，在第一方面的第二种可能的实施方式中，所述第一基站根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站，包括：
所述第一基站在所述多个第二基站中选择所述信道空间特征指示信息为直射径、且空间信道质量参数大于预设门限值的第二基站作为数据传输基站。
结合第一方面至第一方面的第二种可能的实施方式中任一项，在第一方面的第三种可能的实施方式中，所述信道空间特征指示信息为信道空间主径特征指示信息。
结合第一方面的第三种可能的实施方式，在第一方面的第四种可能的实施方式中，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
结合第一方面的第三种可能的实施方式，在第一方面的第五种可能的实施方式中，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
本发明实施例第二方面提供一种信道空间特征信息获取方法，包括：
第二基站接收第一基站发送的信道空间特征请求和待测量用户设备UE的标识；
所述第二基站根据所述信道空间特征请求，对所述待测量UE进行测量，获取信道空间特征信息；
所述第二基站向所述第一基站发送信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息；
其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
结合第二方面，在第二方面的第一种可能的实施方式中，所述信道空间特征指示信息为信道空间主径特征指示信息。
结合第二方面的第一种可能的实施方式，在第二方面的第二种可能的实施方式中，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
结合第二方面的第一种可能的实施方式，在第二方面的第三种可能的实施方式中，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
本发明实施例第三方面提供一种基站，所述基站为第一基站，包括：
发送模块，用于分别向多个第二基站发送信道空间特征请求和待测量用户设备UE的标识，其中所述信道空间特征请求用于指示所述第二基站对所述待测量UE进行信道空间特征信息测量；
接收模块，用于接收所述多个第二基站发送的信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息，其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
结合第三方面，在第三方面的第一种可能的实施方式中，所述基站还包括：
确定模块，用于根据各所述第二基站发送的所述信道空间特征指示信息和空间信道质量信息，确定需要第二基站对待测量UE进行数据传输时，根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站。
结合第三方面的第一种可能的实施方式，在第三方面的第二种可能的实施方式中，所述确定模块，具体用于在所述多个第二基站中选择所述信道空间特征指示信息为直射径、且空间信道质量参数大于预设门限值的第二基站作为数据传输基站。
结合第三方面至第三方面的第二种可能的实施方式，在第三方面的第三种可能的实施方式中，所述信道空间特征指示信息为信道空间主径特征指示信息。
结合第三方面的第三种可能的实施方式，在第三方面的第四种可能的实施方式中，所述第二基站的波束到达所述待测量UE的角度信息，包括：所 述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
结合第三方面的第三种可能的实施方式，在第三方面的第五种可能的实施方式中，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
本发明实施例第四方面提供一种基站，所述基站为第二基站，包括：
接收模块，用于接收第一基站发送的信道空间特征请求和待测量用户设备UE的标识；
测量模块，用于根据所述信道空间特征请求，对所述待测量UE进行测量，获取信道空间特征信息；
发送模块，用于向所述第一基站发送信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息；
其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
结合第四方面，在第四方面的第一种可能的实施方式中，所述信道空间特征指示信息为信道空间主径特征指示信息。
结合第四方面的第一种可能的实施方式，在第四方面的第二种可能的实施方式中，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
结合第四方面的第一种可能的实施方式，在第四方面的第三种可能的实施方式中，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
本发明实施例第五方面提供一种基站，所述基站为第一基站，包括：
发送器，用于分别向多个第二基站发送信道空间特征请求和待测量用户设备UE的标识，其中所述信道空间特征请求用于指示所述第二基站对所述待测量UE进行信道空间特征信息测量；
接收器，用于接收所述多个第二基站发送的信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息，其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角 度信息及空间强度信息。
结合第五方面，在第五方面的第一种可能的实施方式中，所述基站还包括：
处理器，用于根据各所述第二基站发送的所述信道空间特征指示信息和空间信道质量信息，确定需要第二基站对待测量UE进行数据传输时，根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站。
结合第五方面的第一种可能的实施方式，在第五方面的第二种可能的实施方式中，所述处理器，具体用于在所述多个第二基站中选择所述信道空间特征指示信息为直射径、且空间信道质量参数大于预设门限值的第二基站作为数据传输基站。
结合第五方面至第五方面的第二种可能的实施方式中任一项，在第五方面的第三种可能的实施方式中，所述信道空间特征指示信息为信道空间主径特征指示信息。
结合第五方面的第三种可能的实施方式，在第五方面的第四种可能的实施方式中，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
结合第五方面的第三种可能的实施方式，在第五方面的第五种可能的实施方式中，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
本发明实施例第六方面提供一种基站，所述基站为第二基站，包括：
接收器，用于接收第一基站发送的信道空间特征请求和待测量用户设备UE的标识；
处理器，用于根据所述信道空间特征请求，对所述待测量UE进行测量，获取信道空间特征信息；
发送器，用于向所述第一基站发送信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息；
其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
结合第六方面，在第六方面的第一种可能的实施方式中，所述信道空间特征指示信息为信道空间主径特征指示信息。
结合第六方面的第一种可能的实施方式，在第六方面的第二种可能的实施方式中，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
结合第六方面的第一种可能的实施方式，在第六方面的第三种可能的实施方式中，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
本发明实施例提供的信道空间特征信息获取方法及基站中，第一基站分别向多个第二基站发送信道空间特征请求和待测量UE的标识，以指示第二基站测量待测量UE的空间特征信息测量，第二基站向第一基站返回包含待测量UE的信道空间特征信息的信道空间特征指示信息后，第一基站、第二基站与UE通信的信道都可以获取信道空间特征信息，能够更好地分辨不同角度或方向的多径，从而利用这种优势进行数据传输，这样也实现了在数据传输过程中更好地避免多用户之间的干扰，很好地将Massive MIMO技术应用到多基站协作与UE通信的***中。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明提供的信道空间特征信息获取方法实施例一的流程示意图；
图2为本发明提供的信道空间特征信息获取方法实施例二的流程示意图；
图3本发明提供的信道空间特征信息获取方法实施例三的为多基站协作场景下同构***结构示意图；
图4为本发明提供的信道空间特征信息获取方法实施例四的多基站协作场景下异构***结构示意图；
图5为本发明提供的信道空间特征信息获取方法实施例五的流程示意图；
图6为本发明提供的基站实施例一的结构示意图；
图7为本发明提供的基站实施例二的结构示意图；
图8为本发明提供的基站实施例三的结构示意图；
图9为本发明提供的基站实施例四的结构示意图；
图10为本发明提供的基站实施例五的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1为本发明提供的信道空间特征信息获取方法实施例一的流程示意图，如图1所示，该方法包括：
S101、第一基站分别向多个第二基站发送信道空间特征请求和待测量UE的标识。
该信道空间特征请求用于指示第二基站对上述待测量UE进行信道空间特征信息测量。即每个第二基站在接收到信道空间特征请求后，开始测量待测量UE的信道空间特征信息。
举例说明，在频分双工(Frequency Division Duplexing，简称FDD)或时分双工(Time Division Duplexing，简称TDD)***中，第二基站都可以通过监测UE发送的上行监听(sounding)信号来测量UE的信道空间特征信息。
S102、第一基站接收上述多个第二基站发送的信道空间特征指示信息，上述信道空间特征指示信息中携带上述待测量UE的信道空间特征信息。
具体地，上述信道空间特征信息中包括：第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
具体实现过程中，上述第二基站获取上述第二基站的波束到达所述待测量UE的角度信息，可以是第二基站直接测量获取波束到达待测量UE的角度，也可以是测量获取空间角度谱估计，其中空间角度谱估计包括的信息更为完 善，可以进一步根据空间角度谱估计获取具体地波束到达角度信息。
上述信道空间特征指示信息可以为信道空间主径(Dominate Path)特征指示信息，当然，并不以此为限，还可以是强度较高的直径特征指示信息等。
在信道空间特征指示信息为信道空间主径特征指示信息时，上述空间强度信息为空间主径强度信息。
需要说明的是，本发明实施例主要针对将Massive MIMO技术引入多基站协作方案后的具体实施方式。Massive MIMO技术引入多基站协作与UE通信的***后，基站能够更好地分辨不同角度或方向的多径，尤其是当基站与某些UE间的信道表现出在某几个角度或方向上具有较强的多径能量时，可以利用这种特性，十分有效地进行数据传输。
其中，这种基于某些较强多径能量方向的波束赋形(beamforming)在实施过程中具有下述优点：(1)信道获取方式简单，具体地，只要基站估计出具有Dominate Path信道的角度或方向，就可以进行波束赋形；具体地，这种信道获取方式一般是基于信道的长期响应获得的，因此，不需要高密度的瞬时信号获取的导频，另外，具有这种Dominate Path信道特征也可以通过UE到基站的上下行信道互易来获取，导频开销很小。(2)多用户干扰可控，基于上述信道获取方式的波束赋形方案能够很好地控制基站的波束方向及波束宽度，从而很好地控制多用户间的传输干扰，即避免多个基站到UE的各下行信号之间的干扰。
因此，当基站与UE间的信道特征表现为具有Dominate Path信道特征时最适合上述多基站协作地传输方式。
完成上述步骤后，第一基站、第二基站与UE通信的信道都可以获取到信道空间特征信息，其中，第一基站获得各第二基站的波束到达待测量UE的角度信息后，也可以在后续数据传输过程中更好地控制，以避免多个基站到UE的各下行信号之间的干扰。
本实施例中，第一基站分别向多个第二基站发送信道空间特征请求和待测量UE的标识，以指示第二基站测量获取待测量UE的空间特征信息测量，第二基站向第一基站返回包含待测量UE的信道空间特征信息的信道空间特征指示信息后，第一基站、第二基站与UE通信的信道都可以获取信道空间特征信息，因此能够更好地分辨不同角度或方向的多径，从而利用这种优势 进行数据传输，这样也实现了在数据传输过程中更好地避免多用户之间的干扰，很好地将Massive MIMO技术应用到多基站协作与UE通信的***中。
在上述实施例的基础上，第一基站接收上述多个第二基站发送的信道空间特征指示信息之后，第一基站可以根据各第二基站发送的信道空间特征指示信息和空间信道质量信息，确定需要选择第二基站对待测量UE进行数据传输时，第一基站根据上述信道空间特征指示信息和空间信道质量信息，从上述多个第二基站中选择至少一个第二基站作为数据传输基站。之后，第一基站和作为数据传输基站的第二基站协作进行数据传输。
具体地，第一基站确定是否需要选择第二基站对待测量UE进行数据传输，主要根据第二基站发送的信道空间特征指示信息中的空间强度信息来确定，例如，若上述多个第二基站中发送的空间强度信息中有满足预设条件的，则第一基站会从多个第二基站中选择数据传输基站，如果多个第二基站发送的空间强度信息都不满足预设条件，则不选择数据传输基站。
其中，第二基站为第一基站的协作基站，该第一基站与各第二基站之间通过通信接口传输信息，需要说明的是，该通信接口上配置有信道空间特征指示信息。
具体地，本实施例中，第一基站是能够决定数据传输基站的基站，第二基站作为数据传输基站的备选基站。
进一步地，可以根据第二基站发送的信道空间特征指示和信道质量信息，选择满足预设条件的第二基站作为数据传输基站，但并不以此为限。具体实现过程中，上述第一基站根据上述信道空间特征指示信息和空间信道质量信息，从上述多个第二基站中选择至少一个第二基站作为数据传输基站，具体为：第一基站在上述多个第二基站中选择上述信道空间特征指示信息为直射径(line of sight，简称LOS)、且空间信道质量参数大于预设门限值的第二基站作为数据传输基站。
其中，空间信道质量参数可以为参考信号接收质量(Reference Signal Receiving Quality，简称RSRQ)。
具体地，上述第二基站的波束到达上述待测量UE的角度信息，包括：上述第二基站的波束到达上述待测量UE的水平角度信息和上述第二基站的波束到达上述待测量UE的竖直角度信息。
上述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。具体实现过程中，可以预先配置携带空间强度级别信息，还是携带空间强度是否大于预设门限的比较信息，若是携带空间强度级别信息，则提前预设好不同级别的参数，若携带空间强度是否大于预设门限的比较信息，则提前配置好预设门限，该预设门限用于判别空间强度到底为强还是弱。
在上述信道空间特征指示信息为信道空间主径特征指示信息时，上述空间强度信息可以具体包括：空间主径强度级别信息，或者，空间主径强度是否大于预设门限的比较信息。
较为优选地，上述通信接口为X2接口。需要说明的是，信道空间特征是慢变特征，百毫秒(ms)级甚至更长，较适合采用X2接口传输，当然，并不以此为限。
另外，上述实施例可以应用于不同的***，例如同构***、异构***等。
图2为本发明提供的信道空间特征信息获取方法实施例二的流程示意图，图3本发明提供的信道空间特征信息获取方法实施例三的为多基站协作场景下同构***结构示意图，图4为本发明提供的信道空间特征信息获取方法实施例四的多基站协作场景下异构***结构示意图。图3、图4中的圈表示基站的覆盖范围。
参照图3，在同构(Homogeneous)***中，上述第一基站为服务基站(Serving eNodeB)01，第二基站为与上述第一基站相邻的基站(Neighboring eNodeB)02。服务基站01和该基站相邻的基站02都可以与UE03交互信息。
如图2所示，图2中“相邻基站”表示多个相邻基站中的一个，以X2接口为例，该方法包括：
S201、在多小区协作发起阶段，服务基站通过X2接口向多个相邻基站发送信道空间特征请求和待测量UE的标识。
其中，上述多个相邻基站为服务基站的协作基站。
S202、多个相邻基站接收到上述信道空间特征请求和待测量UE的标识之后，开始对上述待测量UE进行信道空间特征信息测量。具体地，可以通过监测UE发送的上行sounding信息来测量UE的信道空间特征信息。
S203、多个相邻基站将待测UE的信道空间特征信息携带在信道空间特 征指示信息上，通过X2接口发送给上述服务基站。
具体地，相邻基站按照“信道空间特征指示”信息的格式在X2接口上发送待测UE的信道空间特征信息。
S204、服务基站根据相邻基站发送的信道空间特征指示信息和空间信道质量信息，确定是否需要选择相邻基站对带测量UE进行数据传输，若是，则执行S205，若否，则结束。
S205、服务基站根据上述多个相邻基站发送的信道空间特征指示信息和其它空间信道质量信息，在上述多个相邻基站中选择至少一个作为数据传输基站。
在同构***中，服务基站一般是UE接入时的基站(eNodeB)，该服务基站负责上述UE的控制信息传输、广播信息传输以及切换等工作。
参照图4，异构***中，上述第一基站为宏基站(Macro eNodeB)04，第二基站为第一基站覆盖范围下的微微基站(Pico eNodeB)05，宏基站04和微微基站05都可以与UE03交互信息。
对于异构***，将图2所示实施例中的服务基站替换为Macro eNodeB，将相邻基站替换为Pico eNodeB。同理，在异构***中，宏基站一般是UE接入时的基站(eNodeB)，该服务基站负责上述UE的控制信息传输、广播信息传输以及切换等工作。
图5为本发明提供的信道空间特征信息获取方法实施例五的流程示意图，该方法的执行主体为上述第二基站，与前述实施例相对应地，该方法包括：
S501、第二基站接收第一基站发送的信道空间特征请求和待测量UE的标识。
S502、第二基站根据上述信道空间特征请求，对待测量UE进行测量，获取信道空间特征信息。
S503、第二基站向上述第一基站发送信道空间特征指示信息，该信道空间特征指示信息中携带待测量UE的信道空间特征信息。
其中，上述信道空间特征信息中包括：第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
具体地，如前述实施例所述，第一基站如果认为需要选择第二基站作为 数据传输基站，就会根据信道空间特征指示信息以及结合其他空间信道质量信息，从多个第二基站中选择数据传输基站。
上述实施例中，第二基站为第一基站的协作基站。第一基站与第二基站之间通过通信接口传输信息，该通信接口上配置有信道空间特征指示信息。
本实施例中，第二基站根据第一基站发送的信道空间特征请求和待测量UE的标识，对待测量UE的空间特征信息进行测量，并向第一基站返回包含待测量UE的信道空间特征信息的信道空间特征指示信息，此时，第一基站、第二基站与UE通信的信道都可以获取信道空间特征信息，能够更好地分辨不同角度或方向的多径，从而利用这种优势进行数据传输，这样也实现了在数据传输过程中更好地避免多用户之间的干扰，很好地将Massive MIMO技术应用到多基站协作与UE通信的***中。
上述信道空间特征指示信息可以为信道空间主径(Dominate Path)特征指示信息，当然，并不以此为限，还可以是强度较高的直径特征指示信息等。
在信道空间特征指示信息为信道空间主径特征指示信息时，上述空间强度信息为空间主径强度信息。
具体地，上述第二基站的波束到达上述待测量UE的角度信息，包括：上述第二基站的波束到达上述待测量UE的水平角度信息和上述第二基站的波束到达上述待测量UE的竖直角度信息。
上述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。具体实现过程中，可以预先配置携带空间强度级别信息，还是携带空间强度是否大于预设门限的比较信息，若是携带空间强度级别信息，则提前预设好不同级别的参数，若携带空间强度是否大于预设门限的比较信息，则提前配置好预设门限，该预设门限用于判别空间强度到底为强还是弱。
较为优选地，上述通信接口为X2接口。
另一实施例中，在同构***中，上述第一基站为服务基站(Serving eNodeB)，第二基站为与上述第一基站相邻的基站(Neighboring eNodeB)。
异构***中，上述第一基站为宏基站(Macro eNodeB)，第二基站为第一基站覆盖范围下的微微基站(Pico eNodeB)。
具体实现过程可以参照前述实施例，在此不再赘述。
图6为本发明提供的基站实施例一的结构示意图，该基站为前述第一基站，具体地，包括：发送模块601和接收模块602，其中：
发送模块601，用于分别向多个第二基站发送信道空间特征请求和待测量用户设备UE的标识，其中所述信道空间特征请求用于指示所述第二基站对所述待测量UE进行信道空间特征信息测量。
接收模块602，用于接收所述多个第二基站发送的信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息，其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
本实施例中，第一基站分别向多个第二基站发送信道空间特征请求和待测量UE的标识，以指示第二基站测量获取待测量UE的空间特征信息测量，第二基站向第一基站返回包含待测量UE的信道空间特征信息的信道空间特征指示信息后，第一基站、第二基站与UE通信的信道都可以获取信道空间特征信息，因此能够更好地分辨不同角度或方向的多径，从而利用这种优势进行数据传输，这样也实现了在数据传输过程中更好地避免多用户之间的干扰，很好地将Massive MIMO技术应用到多基站协作与UE通信的***中。
图7为本发明提供的基站实施例二的结构示意图，在图6的基础上，该基站还包括：确定模块603，用于根据各所述第二基站发送的所述信道空间特征指示信息和空间信道质量信息，确定需要第二基站对待测量UE进行数据传输时，根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站。
更具体地，确定模块603，在所述多个第二基站中选择所述信道空间特征指示信息为直射径、且空间信道质量参数大于预设门限值的第二基站作为数据传输基站。
可选地，所述信道空间特征指示信息为信道空间主径特征指示信息。
所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
图8为本发明提供的基站实施例三的结构示意图，本实施例中的基站为前述第二基站，具体包括：接收模块801、测量模块802和发送模块803，其中：
接收模块801，用于接收第一基站发送的信道空间特征请求和待测量用户设备UE的标识。
测量模块802，用于根据所述信道空间特征请求，对所述待测量UE进行测量，获取信道空间特征信息。
发送模块803，用于向所述第一基站发送信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息。
其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
本实施例中，第二基站根据第一基站发送的信道空间特征请求和待测量UE的标识，对待测量UE的空间特征信息进行测量，并向第一基站返回包含待测量UE的信道空间特征信息的信道空间特征指示信息，此时，第一基站、第二基站与UE通信的信道都可以获取信道空间特征信息，能够更好地分辨不同角度或方向的多径，从而利用这种优势进行数据传输，这样也实现了在数据传输过程中更好地避免多用户之间的干扰，很好地将Massive MIMO技术应用到多基站协作与UE通信的***中。
进一步地，所述信道空间特征指示信息为信道空间主径特征指示信息。
所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
图9为本发明提供的基站实施例四的结构示意图，本实施例中的基站为前述第一基站，具体包括：发送器901和接收器902，其中：
发送器901，用于分别向多个第二基站发送信道空间特征请求和待测量用户设备UE的标识，其中所述信道空间特征请求用于指示所述第二基站对所述待测量UE进行信道空间特征信息测量。
接收器902，用于接收所述多个第二基站发送的信道空间特征指示信息， 所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息，其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
本实施例中，第一基站分别向多个第二基站发送信道空间特征请求和待测量UE的标识，以指示第二基站测量获取待测量UE的空间特征信息测量，第二基站向第一基站返回包含待测量UE的信道空间特征信息的信道空间特征指示信息后，第一基站、第二基站与UE通信的信道都可以获取信道空间特征信息，因此能够更好地分辨不同角度或方向的多径，从而利用这种优势进行数据传输，这样也实现了在数据传输过程中更好地避免多用户之间的干扰，很好地将Massive MIMO技术应用到多基站协作与UE通信的***中。
参照图9，该基站还包括：处理器903，用于根据各所述第二基站发送的所述信道空间特征指示信息和空间信道质量信息，确定需要第二基站对待测量UE进行数据传输时，根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站。
处理器903，具体用于在所述多个第二基站中选择所述信道空间特征指示信息为直射径、且空间信道质量参数大于预设门限值的第二基站作为数据传输基站。
所述信道空间特征指示信息可以为信道空间主径特征指示信息。
所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
该基站用于执行前述方法实施例，其实现原理和技术效果类似，在此不再赘述。
图10为本发明提供的基站实施例五的结构示意图，本实施例中的基站为前述第二基站，具体包括：接收器110、处理器111和发送器112，其中：
接收器110，用于接收第一基站发送的信道空间特征请求和待测量用户设备UE的标识。
处理器111，用于根据所述信道空间特征请求，对所述待测量UE进行测 量，获取信道空间特征信息。
发送器112，用于向所述第一基站发送信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息。
其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
该基站用于执行前述方法实施例，其实现原理和技术效果类似，在此不再赘述。
所述信道空间特征指示信息可以为信道空间主径特征指示信息。
所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (30)

  1. 一种信道空间特征信息获取方法，其特征在于，包括：
    第一基站分别向多个第二基站发送信道空间特征请求和待测量用户设备UE的标识，其中所述信道空间特征请求用于指示所述第二基站对所述待测量UE进行信道空间特征信息测量；
    所述第一基站接收所述多个第二基站发送的信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息，其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一基站接收所述多个第二基站发送的信道空间特征指示信息之后，还包括：
    所述第一基站根据各所述第二基站发送的所述信道空间特征指示信息和空间信道质量信息，确定需要第二基站对待测量UE进行数据传输时，所述第一基站根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站。
  3. 根据权利要求2所述的方法，其特征在于，所述第一基站根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站，包括：
    所述第一基站在所述多个第二基站中选择所述信道空间特征指示信息为直射径、且空间信道质量参数大于预设门限值的第二基站作为数据传输基站。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述信道空间特征指示信息为信道空间主径特征指示信息。
  5. 根据权利要求4所述的方法，其特征在于，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
  6. 根据权利要求4所述的方法，其特征在于，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
  7. 一种信道空间特征信息获取方法，其特征在于，包括：
    第二基站接收第一基站发送的信道空间特征请求和待测量用户设备UE的标识；
    所述第二基站根据所述信道空间特征请求，对所述待测量UE进行测量，获取信道空间特征信息；
    所述第二基站向所述第一基站发送信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息；
    其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
  8. 根据权利要求7所述的方法，其特征在于，所述信道空间特征指示信息为信道空间主径特征指示信息。
  9. 根据权利要求8所述的方法，其特征在于，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
  10. 根据权利要求8所述的方法，其特征在于，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
  11. 一种基站，所述基站为第一基站，其特征在于，包括：
    发送模块，用于分别向多个第二基站发送信道空间特征请求和待测量用户设备UE的标识，其中所述信道空间特征请求用于指示所述第二基站对所述待测量UE进行信道空间特征信息测量；
    接收模块，用于接收所述多个第二基站发送的信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息，其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
  12. 根据权利要求11所述的基站，其特征在于，还包括：
    确定模块，用于根据各所述第二基站发送的所述信道空间特征指示信息和空间信道质量信息，确定需要第二基站对待测量UE进行数据传输时，根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站。
  13. 根据权利要求12所述的基站，其特征在于，所述确定模块，具体用于在所述多个第二基站中选择所述信道空间特征指示信息为直射径、且空间信道质量参数大于预设门限值的第二基站作为数据传输基站。
  14. 根据权利要求11-13任一项所述的基站，其特征在于，所述信道空 间特征指示信息为信道空间主径特征指示信息。
  15. 根据权利要求14所述的基站，其特征在于，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
  16. 根据权利要求14所述的基站，其特征在于，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
  17. 一种基站，所述基站为第二基站，其特征在于，包括：
    接收模块，用于接收第一基站发送的信道空间特征请求和待测量用户设备UE的标识；
    测量模块，用于根据所述信道空间特征请求，对所述待测量UE进行测量，获取信道空间特征信息；
    发送模块，用于向所述第一基站发送信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息；
    其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
  18. 根据权利要求17所述的基站，其特征在于，所述信道空间特征指示信息为信道空间主径特征指示信息。
  19. 根据权利要求18所述的基站，其特征在于，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
  20. 根据权利要求18所述的基站，其特征在于，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
  21. 一种基站，所述基站为第一基站，其特征在于，包括：
    发送器，用于分别向多个第二基站发送信道空间特征请求和待测量用户设备UE的标识，其中所述信道空间特征请求用于指示所述第二基站对所述待测量UE进行信道空间特征信息测量；
    接收器，用于接收所述多个第二基站发送的信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息，其中， 所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
  22. 根据权利要求21所述的基站，其特征在于，还包括：
    处理器，用于根据各所述第二基站发送的所述信道空间特征指示信息和空间信道质量信息，确定需要第二基站对待测量UE进行数据传输时，根据所述信道空间特征指示信息和空间信道质量信息，从所述多个第二基站中选择至少一个第二基站作为数据传输基站。
  23. 根据权利要求22所述的基站，其特征在于，所述处理器，具体用于在所述多个第二基站中选择所述信道空间特征指示信息为直射径、且空间信道质量参数大于预设门限值的第二基站作为数据传输基站。
  24. 根据权利要求21-23任一项所述的基站，其特征在于，所述信道空间特征指示信息为信道空间主径特征指示信息。
  25. 根据权利要求24所述的基站，其特征在于，所述第二基站的波束到达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
  26. 根据权利要求24所述的基站，其特征在于，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
  27. 一种基站，所述基站为第二基站，其特征在于，包括：
    接收器，用于接收第一基站发送的信道空间特征请求和待测量用户设备UE的标识；
    处理器，用于根据所述信道空间特征请求，对所述待测量UE进行测量，获取信道空间特征信息；
    发送器，用于向所述第一基站发送信道空间特征指示信息，所述信道空间特征指示信息中携带所述待测量UE的信道空间特征信息；
    其中，所述信道空间特征信息包括：所述第二基站的波束到达所述待测量UE的角度信息及空间强度信息。
  28. 根据权利要求27所述的基站，其特征在于，所述信道空间特征指示信息为信道空间主径特征指示信息。
  29. 根据权利要求28所述的基站，其特征在于，所述第二基站的波束到 达所述待测量UE的角度信息，包括：所述第二基站的波束到达所述待测量UE的水平角度信息和所述第二基站的波束到达所述待测量UE的竖直角度信息。
  30. 根据权利要求28所述的基站，其特征在于，所述空间强度信息包括：空间强度级别信息，或者，空间强度是否大于预设门限的比较信息。
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KR101907053B1 (ko) 2018-10-11
KR20170101977A (ko) 2017-09-06
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US20170302351A1 (en) 2017-10-19
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