WO2018064986A1 - Procédé de mesure de canal dans un système à multiples antennes, dispositif et support d'informations - Google Patents

Procédé de mesure de canal dans un système à multiples antennes, dispositif et support d'informations Download PDF

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Publication number
WO2018064986A1
WO2018064986A1 PCT/CN2017/105404 CN2017105404W WO2018064986A1 WO 2018064986 A1 WO2018064986 A1 WO 2018064986A1 CN 2017105404 W CN2017105404 W CN 2017105404W WO 2018064986 A1 WO2018064986 A1 WO 2018064986A1
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WO
WIPO (PCT)
Prior art keywords
frequency
terminal
measurement
measurement result
frequency group
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PCT/CN2017/105404
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English (en)
Chinese (zh)
Inventor
李楠
张冬英
黄河
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中兴通讯股份有限公司
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Publication of WO2018064986A1 publication Critical patent/WO2018064986A1/fr

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    • 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
    • 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
    • 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
    • H04B7/0617—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 for beam forming

Definitions

  • the present invention relates to wireless communication technologies, and more particularly to a method, apparatus and storage medium for implementing channel measurement in a multi-antenna system.
  • a millimeter wave (milimeter-wave, mmW) with a high frequency band and a large bandwidth will be used as a wireless carrier for wireless propagation, compared with the existing low frequency band, due to the millimeter.
  • the wavelength of the wave is very short, so the millimeter wave penetration ability and diffraction ability are relatively poor.
  • Beamforming is the ability of the network to “energy concentrate” in a specific direction by weighting each antenna port to enhance the coverage and capability of millimeter waves.
  • the network side device (for example, the base station) needs to accurately weight the beamforming weight for each antenna port, so it is required
  • the user terminal measures the channel characteristics of each antenna port, and reports the measurement result to the network side, so that the network side performs accurate beamforming weight calculation.
  • the channel characteristics of the same antenna port in different frequency intervals of the entire bandwidth are different, so the user terminal needs to measure and report the channel characteristics of different antenna ports on different frequency resources.
  • the user terminal can measure all antennas on the entire bandwidth in one measurement cycle.
  • the number of antennas and the system bandwidth are multiplied, limited by the complexity of the user terminal and the capability of the user terminal, the user terminal cannot measure all the antennas in the entire bandwidth in one measurement period. After completion, the network side cannot accurately beamform the user terminal.
  • Embodiments of the present invention are directed to a method and apparatus for implementing channel measurement in a multi-antenna system, which can improve the accuracy of beamforming and improve resource utilization of the system.
  • the embodiment of the invention provides a method for implementing channel measurement in a multi-antenna system, which is applied to a device on the network side, and includes:
  • the embodiment of the invention provides a method for implementing channel measurement in a multi-antenna system, which is applied to a terminal, and includes:
  • the measurement result is reported to the device on the network side, and the measurement result includes corresponding frequency group information.
  • An embodiment of the present invention provides a device for implementing channel measurement in a multi-antenna system, which is applied to a device on the network side, and includes:
  • a frequency grouping module configured to divide a system bandwidth into a plurality of frequency packets, and send frequency group information to the terminal
  • An information receiving and processing module configured to receive one or more frequency packets reported by the terminal After the channel characteristic measurement results on the respective antenna ports in the range, corresponding beamforming is performed for each frequency group.
  • An embodiment of the present invention provides a device for implementing channel measurement in a multi-antenna system, which is applied to a terminal, and includes:
  • An information receiving and processing module configured to receive frequency group information sent by a device on the network side
  • a measurement module configured to measure channel characteristics on each antenna port within one or more frequency groupings within one measurement period
  • the reporting module is configured to report the measurement result to the device on the network side, where the measurement result includes corresponding frequency group information.
  • Embodiments of the present invention provide a computer storage medium, where the computer storage medium stores computer executable instructions for performing any of the foregoing methods for implementing channel measurement in a multi-antenna system.
  • the present invention provides a method for implementing channel measurement in a multi-antenna system, where devices on the network side group system bandwidth, and frequency positions measured by each terminal are spread over the entire system bandwidth, so that The terminal completes the measurement of the corresponding frequency group in one measurement period and reports the channel characteristic information on all the antenna ports, thereby ensuring scheduling flexibility and beamforming accuracy, and improving system resource utilization and system throughput. Volume and spectral efficiency.
  • the terminal completes measurement of the corresponding frequency group in one measurement period and reports channel characteristic information on all antenna ports, and completes collection and reporting of channel characteristic information on all antenna ports on part or all of the system bandwidth through multiple measurement periods. Therefore, the flexibility of scheduling and the accuracy of beamforming are ensured, and the resource utilization of the system can be improved, and the system throughput and spectrum efficiency are improved.
  • FIG. 1 is a flowchart of a method (network side) for implementing channel measurement in a multi-antenna system according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method (terminal side) for implementing channel measurement in a multi-antenna system according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a device (terminal side) for implementing channel measurement in a multi-antenna system according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of information interaction of a method for measuring a channel in a multi-antenna system according to Example 1 of the present invention.
  • the embodiment of the present invention proposes a solution for measuring a channel in a terminal in a multi-antenna system.
  • an embodiment of the present invention provides a method for measuring a channel in a multi-antenna system, which is applied to a network side, and includes:
  • the system bandwidth is divided into multiple frequency groups, and the frequency group information is sent to the terminal.
  • the network side may be a device on the network side, for example, the network side device may include: a base station, a mobility management entity (MME), and the like, and an access network and a core network formed by the terminal for transmitting and receiving data. And/or network devices that transmit networks.
  • MME mobility management entity
  • the frequency grouping information may be information describing the frequency grouping.
  • the frequency group information can be used by a communication device such as a terminal to learn information such as frequency points included in the frequency group based on the frequency group information.
  • the method may also include the following features:
  • the network side refers to: a base station side.
  • the base station side here may be a device on the base station side, and may be a device on the access network.
  • the access network may be a device for the terminal to connect to the network, and usually has a macro base station, a small base station, a home base station, or a network that can perform wireless signal interaction with the terminal.
  • sending the frequency group information to the terminal includes:
  • each frequency group includes at least one of the following: an identifier of the frequency group; wherein the identifier of the frequency group may be a number of the frequency group; for example, an identifier of the frequency group and each frequency Corresponding frequency points of the group have a corresponding relationship, and the relationship may be notified to the terminal in advance by the device on the network side, or may be written into the terminal in advance;
  • Each frequency group may include n frequency points in addition to the start frequency point and the end frequency point; n is greater than or equal to 1; the number of frequency points included in different frequency groups may be different;
  • the sending the frequency group information to the terminal further includes:
  • the frequency component of the initial measurement corresponding to the terminal is also determined, and the initially measured frequency group information corresponding to the terminal is sent to the terminal.
  • the sending the frequency group information to the terminal further includes:
  • the frequency component of the initial measurement corresponding to the terminal is also determined, and the initially measured frequency group information corresponding to the terminal is sent to the terminal.
  • the determining the frequency group of the initial measurement corresponding to the terminal includes:
  • performing corresponding beamforming on each frequency group including:
  • the effective measurement result refers to: the time when the network side receives the measurement report from the current time is less than or equal to the predetermined correlation time threshold;
  • the measurement result reported by the terminal includes: an identifier of the frequency packet and a channel measurement result corresponding to the frequency packet; wherein the identifier of the frequency packet may be a number of the frequency packet;
  • an embodiment of the present invention provides a method for measuring a channel in a multi-antenna system, which is applied to a terminal, including:
  • S210 Receive frequency group information sent by the network side.
  • the method may also include the following features:
  • the network side refers to: a base station side.
  • the frequency group information includes information of each frequency group on a system bandwidth
  • the information of each frequency group includes: an identifier of the frequency group, a starting frequency point of the frequency group, and an ending frequency point of the frequency group; wherein the identifier of the frequency group may be the frequency grouping Number
  • the measurement result reported by the terminal includes: a measurement result of each frequency group measured by the terminal in the current measurement period, and an identifier of the frequency group corresponding to the measurement result;
  • the method further includes:
  • the terminal determines a frequency grouping of the initial measurement
  • the method further includes:
  • an embodiment of the present invention provides a device for measuring a channel in a multi-antenna system, which is applied to a network side, and includes:
  • the frequency grouping module 301 is configured to divide the system bandwidth into multiple frequency groups, and send frequency group information to the terminal;
  • the information receiving and processing module 302 is configured to perform corresponding beamforming on each frequency group after receiving channel characteristic measurement results on each antenna port in the range of one or more frequency packets reported by the terminal.
  • the frequency grouping module 301 can correspond to a processor of a device on the network side.
  • the processor may be a central processing unit, a microprocessor, a digital signal processor, an application processor, an application specific integrated circuit or a programmable array, etc., and may perform frequency grouping by a computer program or the like and form the frequency grouping information.
  • the information receiving and processing module 302 can correspond to an antenna or an antenna array of a device on the network side, and can be used for transmitting and receiving wireless signals, and the wireless signals carry signal characteristic measurement results and/or other information.
  • the network side refers to: a base station side.
  • the frequency grouping module 301 is configured to send frequency group information to the terminal, including:
  • the information of each frequency group includes: an identifier of the frequency packet, a starting frequency point of the frequency packet, and an ending frequency point of the frequency packet.
  • the frequency grouping module 301 is further configured to determine a frequency packet of the initial measurement corresponding to the terminal, and send, to the terminal, frequency group information of the initial measurement corresponding to the terminal.
  • the frequency grouping module 301 is configured to: after transmitting the frequency group information to the terminal, determine a frequency packet of the initial measurement corresponding to the terminal, and send the initially measured frequency group information corresponding to the terminal to the terminal.
  • the frequency grouping module 301 is configured to determine a frequency group of the initial measurement corresponding to the terminal, including:
  • the information receiving and processing module 302 is configured to: after receiving the channel feature measurement result on each antenna port in the range of one or more frequency packets reported by the terminal, perform corresponding beamforming on each frequency group, including :
  • the effective measurement result refers to: the time when the network side receives the measurement report from the current time is less than or equal to the predetermined correlation time threshold.
  • the measurement result reported by the terminal includes: an identifier of the frequency packet and a channel measurement result corresponding to the frequency packet.
  • an embodiment of the present invention provides a device for measuring a channel in a multi-antenna system, which is applied to a terminal, and includes:
  • the information receiving and processing module 401 is configured to receive frequency group information sent by the network side;
  • the measuring module 402 is configured to measure channel characteristics on each antenna port within one or more frequency groupings in one measurement period;
  • the reporting module 403 is configured to report the measurement result to the network side, where the measurement result includes corresponding frequency group information.
  • the terminal may be a mobile device such as a mobile phone, or an in-vehicle device carried by a vehicle such as an automobile, or a communication device of the Internet of Things.
  • the information receiving and processing module 401 and the reporting module 403 can correspond to the antenna of the terminal, and can perform information interaction with the device on the network side.
  • the measurement module 402 can be a processor or the like connected to the antenna, and can perform channel measurement based on parameters such as signal strength received by the antenna, and generate measurement results of the channel characteristics.
  • the network side refers to: a base station side.
  • the frequency group information includes information of each frequency group on a system bandwidth
  • the information of each frequency group includes: an identifier of the frequency packet, a starting frequency point of the frequency packet, and an ending frequency point of the frequency packet.
  • the measurement result reported by the terminal includes: a measurement result of each frequency group measured by the terminal in the current measurement period, and an identifier of the frequency group corresponding to the measurement result.
  • the information receiving and processing module 401 is further configured to receive the initially measured frequency group information corresponding to the terminal sent by the network side, or determine the frequency component of the initial measurement.
  • the information receiving and processing module 401 is further configured to: after receiving the frequency group information sent by the network side, receive the initially measured frequency group information corresponding to the terminal sent by the network side, or determine the initial measurement. Frequency grouping.
  • the information receiving and processing module 401 is further configured to: after reporting the measurement result to the network side, select one or more frequency packets from all frequency groups on the system bandwidth as the frequency group corresponding to the next measurement period.
  • the present invention provides a method for measuring a channel in a terminal in a multi-antenna system. As shown in FIG. 5, the method includes:
  • the network side (base station side) groups the system bandwidth, and can be divided into K frequency packets;
  • the terminal can measure the channel characteristics on all antenna ports in one measurement time;
  • the frequency points of the respective frequency packets may be orthogonal or may have partial frequency overlap.
  • the division of each frequency group is as follows:
  • W 1 [f w1_start , f w1_end ), W 2 :[f w2_start , f w2_end ),..., W K :[f wK_start ,f wK_end );
  • f wi_start is the starting frequency of the frequency packet
  • f wi_end is the ending frequency of the frequency packet
  • f w1_start is the minimum frequency of the entire system bandwidth
  • f wK_end is the entire system bandwidth Maximum frequency point
  • the network side sends the frequency group information to the terminal.
  • the network side can transmit the frequency group information to the terminal by measuring the control information.
  • the frequency group information includes information of each frequency group, and the information of any one of the frequency groups includes: a frequency group number, a starting frequency point and a ending frequency point corresponding to the frequency group.
  • the format of the frequency packet information is as shown in Table 1 below.
  • the network side selects, for each terminal, a frequency packet that is initially measured.
  • the terminal can perform channel characteristic measurement on different frequency packets in different measurement times. Therefore, the network side may allocate a frequency packet to the terminal as the frequency component of the initial measurement, or the terminal may select one frequency packet as the frequency packet of the initial measurement.
  • the frequency packets of the initial measurement of different terminals are different as much as possible. Then, for any terminal, the network side or the terminal may be in the range of 1 to K. A frequency packet is randomly selected as the frequency component of the initial measurement of the terminal, or a frequency packet of the initial measurement of the terminal may be hashed according to the UE_id (user terminal identifier).
  • the network side sends the initially measured frequency group information to the terminal.
  • the frequency group of the initial measurement may be recorded as W init , and if the network side selects the frequency packet W init for the initial measurement for the terminal, the network side needs to notify the terminal of the frequency packet W init of the initial measurement by the measurement control message.
  • the terminal measures all antenna ports in a frequency range of the frequency group.
  • the terminal After the terminal obtains the frequency component W init of the initial measurement, the terminal performs channel feature measurement on all antenna ports in the frequency group W init range;
  • S106 The terminal reports the measurement result to the network side.
  • the terminal After each measurement, the terminal needs to report the measurement result to the network side.
  • the terminal can report the measurement result to the network side in the latest reporting opportunity.
  • the terminal may determine the next set of measured frequency packets according to the frequency ascending or descending order, and complete measurement of each frequency group on part or all of the system bandwidth by multiple measurements;
  • the network side After receiving the measurement result reported by the terminal side, the network side processes the measurement result reported by the terminal by using a sliding window. That is, a correlation time T cor is set on the network side, the current time is recorded as T now , and all measurement results received in the time range [T now -T cor , T now ] are valid if the measurement result is T now -T cor received before, then the network side will remove these received measurements. All measurements received within the time range [T now -T cor ,T now ] can be referred to as valid measurements.
  • the network side performs scheduling and resource allocation on the terminal within a frequency range of valid measurement results.
  • the network side schedules the terminal at the current time T now, the network allocates resources to the terminal within the frequency range corresponding to the effective measurement result. Moreover, the network side uses different beamforming weights on different frequency groups according to the channel characteristic information reported by the terminal in different frequency groups.
  • the network side sends the downlink scheduling information and the downlink data block to the terminal.
  • An embodiment of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions for performing channel measurement performed in a multi-antenna system provided by a device applied to a network side.
  • the computer storage medium provided by the embodiment of the invention includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. Medium.
  • the computer storage medium can be a non-transitory storage medium.
  • the non-transitory storage medium herein may also be referred to as a non-volatile storage medium.
  • the embodiment of the present invention further provides a communication device, which may be the network side device or the terminal.
  • the communication device can include:
  • the processor 320 is coupled to the memory 310 and the transceiver 330, respectively, for performing a method for implementing channel measurement in a multi-antenna system provided by any one or more of the above technical solutions by executing the computer program.
  • the transceiver 330 in this embodiment may correspond to a transceiver antenna, and the transceiver antenna may be information interaction between the base station and the UE.
  • the memory 310 can include various types of storage media that can be used for data storage.
  • the storage medium included in the memory 310 is at least partially a non-volatile storage medium, and can be used to store computer-executable instructions such as the computer program.
  • the processor 320 can include a central processing unit, a microprocessor, a digital signal processor, an application processor, an application specific integrated circuit, or a programmable array, etc., which can be used by a computer program. The determination of the quality of the cell signal is performed.
  • the processor 320 can be connected to the transceiver 330 and the memory 310 via an in-device bus such as an integrated circuit bus.
  • the system bandwidth is divided into multiple frequency packets, and the frequency group information is sent to the terminal by the network side device, and the terminal can perform channel measurement based on the information of the frequency grouping of the entire system bandwidth, so that the channel can be made.
  • the terminal completes the measurement of the corresponding frequency group in one measurement period and reports the channel characteristic information on all the antenna ports, and the terminal completes the measurement of the corresponding frequency group in one measurement period and reports the channel characteristic information on all the antenna ports, through multiple
  • the measurement cycle completes the collection and reporting of channel characteristic information on all antenna ports on part or all of the system bandwidth; thus, it has a positive industrial effect; and has the characteristics of simple implementation, industrial achievability and easy promotion.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de mesure de canal dans un système à multiples antennes, à utiliser dans un équipement côté réseau et comprenant : la division d'une largeur de bande système en de multiples groupes de fréquences et l'envoi des informations de groupes de fréquences à un terminal ; après la réception de résultats de mesures de caractéristiques de canal pour tous les ports d'antenne à l'intérieur de la plage d'un groupe de fréquences ou d'une pluralité de groupes de fréquences, selon le rapport par un terminal, la réalisation d'une formation de faisceau correspondante pour chaque groupe de fréquences. La présente invention concerne également un procédé d'application à des terminaux pour une mesure de canal dans un système à multiples antennes, comprenant : la réception d'informations de groupes de fréquences envoyées par un équipement côté réseau ; durant un cycle de mesures, la mesure des caractéristiques de canal de tous les ports d'antenne à l'intérieur de la plage d'un groupe de fréquences ou d'une pluralité de groupes de fréquences ; le rapport des résultats de mesures à l'équipement côté réseau, lesdits résultats de mesures comprenant des informations correspondantes de groupes de fréquences. La présente invention concerne en outre un ordinateur et un support d'informations.
PCT/CN2017/105404 2016-10-09 2017-10-09 Procédé de mesure de canal dans un système à multiples antennes, dispositif et support d'informations WO2018064986A1 (fr)

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