WO2015024204A1 - 通信方法及装置 - Google Patents

通信方法及装置 Download PDF

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Publication number
WO2015024204A1
WO2015024204A1 PCT/CN2013/081898 CN2013081898W WO2015024204A1 WO 2015024204 A1 WO2015024204 A1 WO 2015024204A1 CN 2013081898 W CN2013081898 W CN 2013081898W WO 2015024204 A1 WO2015024204 A1 WO 2015024204A1
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WO
WIPO (PCT)
Prior art keywords
terminals
channel
narrow beam
narrow
wide beam
Prior art date
Application number
PCT/CN2013/081898
Other languages
English (en)
French (fr)
Inventor
彭炎
周宏睿
杨敬
马霓
赵建平
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2016535289A priority Critical patent/JP6257769B2/ja
Priority to EP13891858.6A priority patent/EP3018927B1/en
Priority to PCT/CN2013/081898 priority patent/WO2015024204A1/zh
Priority to CN201910795757.7A priority patent/CN110602721B/zh
Priority to CN201380035540.7A priority patent/CN104412638B/zh
Publication of WO2015024204A1 publication Critical patent/WO2015024204A1/zh
Priority to US15/047,826 priority patent/US9992688B2/en
Priority to US15/979,844 priority patent/US10743195B2/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/28Cell structures using beam steering
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0408Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/32Hierarchical cell structures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity 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
    • H04B7/0621Feedback content
    • H04B7/0626Channel coefficients, e.g. channel state information [CSI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/046Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a communication method and apparatus. Background technique
  • OFDM Orthogonal Frequency Division Multipelexing
  • MIMO Multiple Antenna Multiple Input Multiple Output
  • CA Carrier Aggregation
  • CoMP Coordinated Multi-Point
  • the core of improving the spectrum efficiency of mobile communication networks is to improve the signal-to-noise ratio.
  • interference coordination or power control techniques can be used to achieve this goal.
  • a relatively intuitive method is to increase the available resources of the mobile communication network, for example, by increasing the available bandwidth of the mobile communication network, it can directly increase its capacity.
  • Multi-antenna technology is widely favored because it can improve transmission efficiency without increasing bandwidth.
  • the principle of the technology is to increase the number of transmitting antennas in a unit physical area, thereby making full use of channel characteristics and increasing the degree of multiplexing of time-frequency resources without increasing the bandwidth, thereby greatly improving spectrum efficiency. .
  • HetNet Heterogeneous Network
  • DAS Distributed Antenna System
  • MIMO Mobility Management Entity
  • the embodiment of the invention provides a communication method and a base station, which can improve spectrum efficiency without requiring additional site backhaul resources or affecting coverage relationship between sectors.
  • a communication method including: determining, by a base station, that at least two narrow beams transmit data for at least two terminals, wherein the base station transmits a wide beam and at least two narrow beams; the base station is at the same time frequency Resource, using the determined narrow beam to transmit data for the at least two terminals; wherein the wide beam covers one sector of the base station, and the coverage area of the narrow beam is completely in the coverage of the wide beam
  • the wide beam and the narrow beam have the same physical cell identifier PCI.
  • the method further includes: the base station transmitting data for the other terminal by using the wide beam.
  • the base station uses the determined narrow beam to transmit data for the at least two terminals on the same time-frequency resource.
  • the method includes: the base station transmitting data for the at least two terminals by using the determined narrow beam on the first time-frequency resource.
  • the base station uses the wide beam to transmit data for the other terminal, including: the base station transmitting, by using the wide beam, the other terminal, on a second time-frequency resource different from the first time-frequency resource. data.
  • the base station determines that the wide beam is the other terminal And transmitting, by the base station, the first channel sounding reference signal SRS sent by each terminal of the other terminals by transmitting the wide beam and the antenna of the narrow beam, respectively, according to transmitting the wide beam and And determining, by the narrow-beam antennas, the signal strength values of the first SRS sent by each of the other terminals, respectively, determining that the antennas from the wide beam and the narrow beam are respectively sent to the Channel quality of a channel of each of the other terminals; comparing the channel quality of the channel from each of the antennas transmitting the narrow beam to the other of the other terminals, from transmitting the wide beam When the channel quality of the channel of each antenna to each of the other terminals is the best, the wide beam is determined to transmit data for each of the other terminals.
  • the base station is received by the other terminal according to the antenna that transmits the wide beam and the narrow beam respectively a signal strength value of the first SRS sent by each terminal, determining a channel quality of a channel from each of the antennas transmitting the wide beam and the narrow beam to each of the other terminals, including: And the base station separately receives, according to a signal strength value correction value set for the antenna that transmits the wide beam and the narrow beam, respectively, the antenna that is sent by the wide beam and the narrow beam is received by the other terminal Correcting a signal strength value of the first SRS sent by each terminal to obtain a signal strength value of each of the modified first SRSs; determining, according to the corrected signal strength values of the first SRSs Channel quality from a channel transmitting the wide beam and the narrow beam to a channel of each of the other terminals, respectively.
  • the base station determines that the at least two narrow beams are at least two And transmitting, by the terminal, the second SRS sent by each of the at least two terminals by transmitting, by the base station, the antenna of the wide beam and the narrow beam; Transmitting, by the antenna of the wide beam and the narrow beam, a signal strength value of the second SRS transmitted by each of the at least two terminals, determining to transmit the wide beam and the Channel quality of a narrow beam antenna to a channel of each of the at least two terminals; comparing compared to each of the at least two terminals from an antenna transmitting the wide beam The channel quality of the channel, when the channel quality of the channel transmitting the narrow beam to the channel of each of the at least two terminals is the best, determining the narrow beam as each of the at least two terminals The terminal transmits data.
  • the base station is received by the at least two terminals according to the antennas that transmit the wide beam and the narrow beam respectively a signal strength value of the second SRS transmitted by each of the terminals, determining a channel quality from a channel transmitting the wide beam and the narrow beam to a channel of each of the at least two terminals,
  • the method includes: the base station separately receiving, according to a signal strength value preset value set for an antenna that transmits the wide beam and the narrow beam, respectively, the antenna that transmits the wide beam and the narrow beam is received by the Correcting a signal strength value of the second SRS sent by each terminal of the at least two terminals to obtain a signal strength value of each of the modified second SRSs; and according to each of the modified second SRSs
  • the signal strength value determines a channel quality from a channel transmitting the wide beam and the narrow beam to a channel of each of the at least two terminals, respectively.
  • comparing the antenna from the transmitting the wide beam to each of the at least two terminals The channel quality of the channel, when the channel quality of the channel transmitting the narrow beam to the channel of each of the at least two terminals is the best, determining the narrow beam as each of the at least two terminals Transmitting data by the terminal, including: the base station selecting, from a channel transmitting the narrow beam to a channel of each of the at least two terminals, a channel with the best channel quality; and determining a narrow beam for transmitting the selected channel Transmitting data for each of the at least two terminals.
  • the method further includes:
  • the base station Transmitting, by the base station, the cell-specific reference signal CRS by using the wide beam;
  • the base station separately transmits a channel state information reference signal CSI-RS according to a channel state information reference signal CSI-RS respectively set for each narrow beam transmitted by the base station, and respectively, using different narrow beams transmitted by the base station;
  • the CSI-RSs in which the narrow beams are set are different from each other.
  • the base station uses the determined narrow beam to transmit data to the at least two terminals on the first time-frequency resource
  • the method includes: performing, by the base station, each terminal of the at least two terminals: notifying a terminal of a resource configuration index of a CSI-RS configured to transmit a narrow beam for the terminal; and obtaining the terminal Determining, by the CSI-RS, a corresponding channel state report that is measured by the CSI-RS; determining, according to the channel state report that the at least two terminals respectively feed back to the base station, the first time-frequency resource; And transmitting data to the at least two terminals by using the determined narrow beam.
  • the base station uses the wide beam to transmit data to the other terminal on the second time-frequency resource
  • the method includes: the base station obtaining, by the other terminal, a channel status report that is fed back to the base station by using the CRS that is received by the other terminal; determining, according to the channel status report, the second time-frequency resource; On the second time-frequency resource, the determined wide beam is used to transmit data to the other terminal.
  • a communication device transmits a wide beam and at least two narrow beams; the device includes: a narrow beam determining module, configured to determine that at least two narrow beams transmit data for at least two terminals; a data transmission module, configured to cover, by using a narrow beam, a sector of the communication device on a same time-frequency resource, where a coverage area of the narrow beam is completely within the coverage of the wide beam, and The wide beam and the narrow beam have the same physical cell identity PCI.
  • the apparatus further includes: a wide beam determining module, configured to determine that the wide beam transmits data to another terminal different from the at least two terminals;
  • the data transmission module is further configured to transmit data for the other terminal by using the wide beam.
  • the data transmission module is specifically configured to use the determined narrow beam as the at least two on the first time-frequency resource Terminals transmit data.
  • the data transmission module is specifically configured to use the second time-frequency resource different from the first time-frequency resource.
  • the wide beam transmits data for the other terminal.
  • the wide beam determining module specifically includes: a signal receiving submodule, configured to pass Transmitting the wide beam and the narrow beam antenna, respectively receiving a first channel sounding reference signal SRS sent by each terminal of the other terminal; a channel quality determining submodule, configured to transmit the wide beam and the And determining, by the narrow-beam antennas, the signal strength values of the first SRS sent by each of the other terminals, respectively, determining that the antennas that transmit the wide beam and the narrow beam respectively go to the other Channel quality of a channel of each terminal in the terminal; a wide beam determining sub-module for comparing channel quality of a channel from each of the antennas transmitting the narrow beam to each of the other terminals, Determining that the wide beam is in the other terminal when the channel quality of the channel transmitting the wide beam to the channel of each of the other terminals is the best Each terminal transmits data.
  • a signal receiving submodule configured to pass Transmitting the wide beam and the narrow beam antenna, respectively receiving a first channel sounding reference signal SRS
  • the channel quality determining sub-module is specifically configured to: according to an antenna for transmitting the wide beam and the narrow beam in advance a signal strength value correction value respectively set, and correcting, by the antenna transmitting the wide beam and the narrow beam respectively, a signal strength value of the first SRS sent by each terminal of the other terminal, Obtaining, respectively, a signal strength value of each of the modified first SRSs; determining, according to the signal strength values of the respective modified first SRSs, an antenna from transmitting the wide beam and the narrow beam to the Channel quality of the channel of each terminal in other terminals.
  • the narrow beam determining module specifically includes: a signal receiving submodule, configured to pass Transmitting the wide beam and the narrow beam antenna, respectively receiving a second SRS sent by each of the at least two terminals; a channel quality determining submodule, configured to transmit the wide beam and the narrow a signal strength value of the second SRS transmitted by each of the at least two terminals received by the antenna of the beam, determining a day from transmitting the wide beam and the narrow beam a line to a channel quality of a channel of each of the at least two terminals; a narrow beam determining submodule, configured to compare the antenna from the transmitting the wide beam to the at least two terminals Determining the narrow beam as the at least two when the channel quality of the channel of each terminal is the best from the antenna transmitting the narrow beam to the channel of each of the at least two terminals Each terminal in the terminal transmits data.
  • a signal receiving submodule configured to pass Transmitting the wide beam and the narrow beam antenna, respectively receiving a second SRS sent by each of the at least
  • the channel quality determining sub-module is specifically configured to: according to an antenna for transmitting the wide beam and the narrow beam in advance a separately set signal strength value correction value, respectively received by the antenna transmitting the wide beam and the narrow beam, respectively, by the terminal of each of the at least two terminals
  • the narrow beam determining submodule is specifically configured to: compare the antenna from the transmitting the wide beam to the at least The channel quality of the channel of each of the two terminals, from the antenna transmitting the narrow beam to the channel quality of the channel of each of the at least two terminals, from the antenna transmitting the narrow beam to the antenna Selecting, among the channels of each of the at least two terminals, a channel with the best channel quality; and determining to transmit a narrow beam of the selected channel to transmit data for each of the at least two terminals.
  • the apparatus further includes:
  • a reference signal sending module configured to: send the cell-specific reference signal CRS by using the wide beam; and use the channel state information reference signal CSI-RS respectively set for each narrow beam that is transmitted in advance, and use the narrow beams respectively The channel state information reference signal CSI-RS is transmitted; wherein the CSI-RSs of different narrow beams are different from each other.
  • the data transmission module is specifically configured to: perform, for each terminal of the at least two terminals, a resource configuration index of a CSI-RS configured to be a narrow beam configured to transmit data for the terminal Notifying the terminal; and obtaining a corresponding channel state report fed back by the terminal to measure the CSI-RS; determining the first time-frequency according to a channel status report that is sent back to the device by the at least two terminals respectively Resource: transmitting, on the first time-frequency resource, data for the at least two terminals by using the determined narrow beam.
  • the data transmission module is specifically configured to: obtain, by the other terminal, the measurement of the CRS received by the other terminal And a channel status report that is fed back to the device; determining, according to the channel status report, the second time-frequency resource; and using the determined wide beam to transmit data to the other terminal on the second time-frequency resource; .
  • the foregoing solution provided by the embodiments of the present invention simultaneously transmits a wide beam covering one sector of the base station and a narrow beam covering the coverage of the wide beam by the base station, thereby realizing coverage of the sector of the base station by using the wide beam.
  • the enhanced coverage of the sector is further achieved by narrow beams to improve spectral efficiency.
  • This scheme does not affect the coverage relationship between sectors because it still maintains the wide beam-to-sector coverage of the base station without changing.
  • the solution does not require additional site backhaul resources and does not require additional standardization support.
  • FIG. 1 is a schematic flowchart of a specific implementation of a communication method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a wide beam and a narrow beam deployed in different sectors according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of coverage of a wide beam and a narrow beam transmitted by a base station in Embodiment 1;
  • FIG. 4a is a CRS of a base station using a wide beam transmitted on an antenna port Port 0 at an RB granularity in Embodiment 1. The pattern of the occupied RE;
  • the base station utilizes a wide beam at the antenna port Port The pattern of the RE occupied by the CRS sent on 1;
  • Figure 5a is a diagram showing the RE occupied by the first CSI-RS at an RB granularity in Embodiment 1;
  • Figure 5b is a diagram showing the RE occupied by the second CSI-RS at an RB granularity in Embodiment 1;
  • 5c is a pattern of REs occupied by a third CSI-RS at an RB granularity in Embodiment 1;
  • Figure 5d is a diagram showing the RE occupied by the fourth CSI-RS in an RB granularity in Embodiment 1;
  • FIG. 6 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another communication device according to an embodiment of the present invention. detailed description
  • FIG. 1 The embodiments of the present invention are described in the following with reference to the accompanying drawings. It is to be understood that the embodiments described herein are intended to illustrate and explain the invention. And the present invention provides a communication method as shown in FIG. 1, which mainly includes the following steps:
  • Step 11 The base station determines that at least two narrow beams transmitted by the base station transmit data for at least two terminals.
  • the base station may transmit a wide beam and at least two narrow beams, and the foregoing “at least two terminals” are terminals within the coverage of each narrow beam determined by the base station to transmit data for the terminals.
  • the narrow beams currently transmitted by the base station are narrow beam 1, narrow beam 2, and narrow beam 3, respectively, and are: the terminal 1 is in the coverage of the narrow beam 1, and the terminal 2 is in the coverage of the narrow beam 2, and the terminal 3 It is both in the coverage of the narrow beam 2 and in the coverage of the narrow beam 3.
  • the base station may determine the narrow beam 1 as a beam for transmitting data for the terminal 1 according to a certain determination rule, determine the narrow beam 2 as a beam for transmitting data for the terminal 2, and combine the narrow beam 2 and The narrow beams 3 are collectively determined as beams for transmitting data for the terminal 3.
  • the determination rule described herein it may be related to the signal strength value of the channel sounding reference signal SRS transmitted by the terminal 1, the terminal 2 and the terminal 3 respectively received by the base station.
  • the specific determination rules will be described later, and will not be described here.
  • the wide beam and the narrow beam transmitted by the base station may satisfy: a wide beam covers one sector of the base station; a coverage area of the narrow beam is smaller than a coverage area of the wide beam; and a coverage area of the narrow beam is completely in a wide beam The coverage is within the coverage; and the wide beam and the narrow beam have the same Physical Cell Identifier (PCI). Since the wide beam and the narrow beam have the same PCI, it is possible to avoid that the wide and narrow beams respectively use different PCIs, and the interference between the wide and narrow beams is too large, so that the terminal cannot receive the wide beam or the narrow beam normally.
  • PCI Physical Cell Identifier
  • the macro base station is used as an example, and a plurality of narrow beams with a narrow horizontal beamwidth (horizontal bandwidth) may be additionally formed to keep the macro base station unchanged while maintaining the antenna deployment of the existing macro base station unchanged. Covering a specific area within the area, thereby realizing the capacity enhancement of the coverage area of the macro base station.
  • the range outlined by the thick solid line indicates the coverage of the three wide beams transmitted by the macro base station; the range outlined by the thin solid line indicates that the macro base station transmits while transmitting the three wide beams.
  • the coverage of multiple narrow beams; the range outlined by the dashed lines indicates the sector of the macro base station.
  • the single closed area outlined by the thin solid line represents the coverage of a single narrow beam.
  • the number of narrow beams deployed in different sectors as shown in Figure 2 can vary. In general, the number of narrow beams deployed in any sector is related to the distribution of terminals within the sector and the capacity requirements of the sector.
  • the antenna configurations of different narrow beams may also be different from each other.
  • the antenna configuration referred to herein may include configurations of indicators such as the horizontal orientation of the antenna, the beam width of the transmission, the downtilt angle, the transmission power, and/or the number of ports.
  • the antenna configuration of each narrow beam can be static or semi-static.
  • the static configuration refers to configuring the antennas such as the above-mentioned indicators based on the network plan, and the indicators are generally not adjusted after being configured
  • the semi-static configuration refers to configuring the antennas based on the network planning.
  • the base station counts some time (the time mentioned here can be one hour, can be one day, etc.)
  • the indicator configured for the antenna is configured according to the information.
  • the narrow beam A serves more terminals
  • the narrow beam B serves fewer terminals
  • the narrow beam can be transmitted.
  • the beamwidth of the transmission of the antenna of A is reduced, and the beamwidth of the transmission of the antenna transmitting the narrow beam B is increased, and the transmission power of the antenna transmitting the narrow beam B can also be adjusted.
  • Step 12 The base station transmits data to the at least two terminals by using the determined narrow beam on the same time-frequency resource.
  • the method provided by the embodiment of the present invention can simultaneously transmit a wide beam covering one sector of a base station by using a base station, and a narrow beam whose coverage is completely within the coverage of the wide beam, so that coverage of a sector of the base station can be realized by using a wide beam.
  • the narrow beam is further used to transmit data for the terminal, thereby achieving the purpose of enhancing coverage of the sector and increasing system capacity.
  • the mode in which the base station uses the determined narrow beam to transmit data for at least two terminals on the same time-frequency resource may be, but not limited to, the following types and combinations thereof:
  • the base station transmits data to at least two terminals by using the determined narrow beam on the same time-frequency resource according to different narrow beams to respectively transmit data for different terminals;
  • the base station transmits data to at least two terminals by using the determined narrow beam on the same time-frequency resource according to the method of using at least two narrow beams to transmit data for the same terminal.
  • the narrow beams transmitted by the base station are narrow beam A, narrow beam B, narrow beam C, and narrow beam D, respectively, and the sector wide beam coverage exists in terminal a, terminal b, terminal c, and terminal d, And the scope of each terminal is as follows:
  • Terminal a is within the coverage of narrow beam A;
  • Terminal b is within the common coverage of narrow beam A and narrow beam B;
  • Terminal c is within the coverage of narrow beam C;
  • Terminal d is within the common coverage of narrow beam C and narrow beam D.
  • the base station can transmit data for the terminal a using the narrow beam A on the same time-frequency resource, and transmit the number for the terminal c by using the narrow beam C.
  • the base station can use the narrow beam A and the narrow beam B to jointly transmit data for the terminal b and the narrow beam C and the narrow beam D for the terminal d to transmit data on the same time-frequency resource.
  • the foregoing method provided by the embodiment of the present invention may further include the following steps: using the wide beam to transmit data for the other terminal.
  • the sequence of execution of the step and the above steps 11 and 12 is not specified, that is, the step may be performed after the step 12, or may be performed in parallel with the step 11, and so on.
  • the foregoing method provided by the embodiment of the present invention further includes the foregoing steps, and the base station can use the wide beam and the narrow beams transmitted by the base station to separately transmit data for different terminals, thereby improving system capacity.
  • the specific implementation manner of the foregoing step 12 may include: the base station uses the determined narrow beam on the first time-frequency resource. At least two terminals as described above transmit data.
  • the specific implementation manner in which the base station uses the wide beam to transmit data to other terminals may include: the base station transmitting data for the other terminal by using the wide beam on the second time-frequency resource different from the first time-frequency resource.
  • the base station determines whether the wide beam is the terminal transmission data or the narrow beam is the terminal transmission data, and the determination basis may be the channel sounding reference signal (SRS) sent by the terminal.
  • SRS channel sounding reference signal
  • the base station may not use the SRS sent by the terminal as the basis, but once the terminal is detected to be within the coverage of a certain beam, the beam is selected as the The beam of the terminal service, that is, the beam is selected to transmit data for the terminal.
  • the process in which the base station determines that the wide beam transmits data to other terminals may include: The base station respectively receives the first SRS sent by each of the other terminals by transmitting the antennas of the wide beam and the narrow beam; and respectively received by each of the other terminals according to the antennas that transmit the wide beam and the narrow beam respectively a signal strength value of the first SRS transmitted by the terminal, determining a channel quality from a channel transmitting the wide beam and the narrow beam to a channel of each of the other terminals; comparing the antennas compared to the narrow beam from the transmitting Determining the wide beam into the other terminal when the channel quality of the channel to each of the other terminals is the best from the antenna transmitting the wide beam to the channel of each of the other terminals Each terminal transmits data.
  • the narrow beams transmitted by the base station are narrow beam, narrow beam B, and narrow beam C, respectively, and it is assumed that the "other terminals" mentioned above include the terminal a and the terminal 1) within the wide beam coverage of the base station.
  • the signal strength value of the first SRS transmitted by the terminal a transmitted by the antenna transmitting the wide beam A is -70 dBm
  • the signal strength value of the first SRS transmitted by the terminal b received by the antenna transmitting the wide beam A is -74dBm
  • the signal strength value of the first SRS transmitted by the terminal a received by the antenna transmitting the narrow beam B is -76dBm
  • the signal strength value of the first SRS transmitted by the terminal b received by the antenna transmitting the narrow beam B is -78 dBm
  • the signal strength value of the first SRS transmitted by the terminal transmitting a received by the antenna of the narrow beam C is -78 dBm
  • the signal strength value of the first SRS transmitted by the terminal a received by the antenna transmitting the wide beam A is -70 dBm, which is not only the terminal received by the antenna transmitting the narrow beam B.
  • the signal strength value of the first SRS transmitted by a is -76 dBm, which is also larger than the signal strength value of the first SRS transmitted by the antenna transmitting the narrow beam C by -78 dBm, so that the antenna from the wide beam A is transmitted.
  • the channel quality to the channel to terminal a is high, so wide beam A can be determined as the beam for transmitting data for terminal a.
  • the signal strength value of the first SRS transmitted by the terminal b received by the antenna transmitting the wide beam A is -74 dBm, which is not only transmitted by the terminal b than the antenna transmitting the narrow beam B.
  • the signal strength value of the first SRS is -78dBm larger than the day of transmitting the narrow beam C
  • the signal strength value of the first SRS transmitted by the terminal b received by the line is -79 dBm, so that the channel quality from the antenna transmitting the wide beam A to the channel of the terminal b is high, so that the wide beam A can be determined to be transmitted for the terminal b.
  • the beam of data is -74 dBm, which is not only transmitted by the terminal b than the antenna transmitting the narrow beam B.
  • the signal strength value of the first SRS is -78dBm larger than the day of transmitting the narrow beam C
  • the signal strength value of the first SRS transmitted by the terminal b received by the line is -79 dBm, so that the channel
  • the base station determines, according to the signal strength values of the first SRS sent by each of the other terminals, the antennas that transmit the wide beam and the narrow beam respectively, and determine the antennas from the transmitting wide beam and the narrow beam respectively.
  • the process of channel quality of the channel of each of the other terminals may specifically include the following steps:
  • the base station determines, according to the corrected signal strength value of the first SRS, the antenna from the transmitting wide beam and the narrow beam to the other terminal respectively The channel quality of the channel in each terminal.
  • An example of correcting the signal strength value of the first SRS received by the antenna according to the signal strength value correction value is as follows: Suppose the base station transmits a beam including a wide beam and two narrow beams, and transmits a wide and narrow beam.
  • the signal strength values of the first SRS received by the antennas are -70 dBm, -72 dBm, and -77 dBm, respectively, and the signal strength correction values set for the antennas transmitting the wide and narrow beams are 3 dB, 6 dB, and 6 dB, respectively.
  • the corrected first SRS signal strength values obtained by correcting the signal strength values of -70 dBm, -72 dBm, and -77 dBm are -67 dBm, -66 dBm, -71 dBm, respectively.
  • the signal strength value correction value respectively set for the antenna for transmitting the wide beam and the narrow beam may be the antenna gain of the antenna transmitting the wide beam and the narrow beam, the number of the antennas transmitting the narrow beam, the number of terminals respectively serving different beams, The transmit power of different beams is related to other factors.
  • the process of the base station determining that at least two narrow beams transmitted by the base station transmit data for at least two terminals may include:
  • the base station receives the second SRS sent by each of the at least two terminals by transmitting the antennas of the wide beam and the narrow beam respectively; Determining, from the antennas transmitting the wide beam and the narrow beam, to the at least the antenna strength values of the second SRS transmitted by each of the at least two terminals respectively received according to the antennas transmitting the wide beam and the narrow beam Channel quality of the channel of each of the two terminals;
  • the narrow beam is determined to transmit data for each of the at least two terminals.
  • the narrow beams transmitted by the base station are narrow beam A, narrow beam B, narrow beam C, respectively, and it is assumed that the above "at least two terminals" include the terminal terminal d in the wide beam coverage of the base station sector.
  • the signal strength value of the second SRS transmitted by the terminal c received by the antenna transmitting the wide beam A is -79 dBm
  • the signal strength value of the second SRS transmitted by the terminal d received by the antenna transmitting the wide beam A is -78 dBm
  • the signal strength value of the second SRS transmitted by the terminal c received by the antenna transmitting the narrow beam B is -76 dBm
  • the signal strength value of the second SRS transmitted by the terminal d received by the antenna transmitting the narrow beam B is -76dBm
  • the signal strength value of the second SRS transmitted by the terminal c transmitted by the antenna transmitting the narrow beam C is -75dBm
  • the signal strength value of the second SRS transmitted by the terminal c received by the antenna transmitting the wide beam A is -79 dBm, which is not only the terminal received by the antenna transmitting the narrow beam B.
  • the signal strength value of the second SRS transmitted by c is smaller than -76 dBm, and is also smaller than the signal strength value of the second SRS transmitted by the antenna of the narrow beam C, which is transmitted by the terminal c, by -75 dBm, so that the narrow beam can be determined from transmitting the narrow beam.
  • the channel quality of the channel from the antenna to the terminal c is high, and in particular, the channel quality of the channel transmitting the narrow beam C to the channel of the terminal c is high, so that the narrow beam C can be determined as the beam for transmitting data for the terminal c.
  • the signal strength value of the second SRS transmitted by the terminal d received by the antenna transmitting the wide beam A is -78 dBm, which is not only received by the antenna transmitting the narrow beam B.
  • the signal strength value of the second SRS transmitted by the terminal d is -76 dBm, which is smaller than the signal strength value of the second SRS transmitted by the antenna of the narrow beam C, which is transmitted by the antenna d, is -75 dBm, so that the narrow beam can be determined to be transmitted from the narrow beam.
  • the channel quality of the channel from the antenna to the terminal d is high, especially the channel quality of the channel transmitting the narrow beam C to the channel of the terminal d is high, so that the narrow beam C can be determined as the beam for transmitting data for the terminal d.
  • the base station determines, according to the signal strength value of the second SRS sent by each of the at least two terminals, the antenna that transmits the wide beam and the narrow beam, respectively, to determine the antenna from the transmitting wide beam and the narrow beam.
  • the process of separately determining the channel quality of the channel of each of the at least two terminals may specifically include:
  • the base station sends, according to a signal strength value correction value respectively set for the antenna that transmits the wide beam and the narrow beam, to each of the at least two terminals that are respectively received by the antenna that transmits the wide beam and the narrow beam.
  • the signal strength value of the second SRS is corrected to obtain a signal strength value of each of the corrected second SRSs.
  • the manner of correcting the signal strength value of the second SRS according to the signal strength value correction value is similar to the foregoing, and details are not described herein again.
  • the base station determines, according to the signal strength values of the respective corrected second SRSs, channel qualities from the antennas transmitting the wide beam and the narrow beam to the channels of each of the at least two terminals, respectively.
  • the base station compares the channel quality of the channel from the antenna that transmits the wide beam to each of the at least two terminals, from the antenna that transmits the narrow beam to the at least two
  • the specific implementation process of determining that the narrow beam transmits data for each of the at least two terminals may include: the base station transmits the antenna from the narrow beam to Selecting, among the channels of each of the at least two terminals, a channel with the best channel quality; and determining to transmit a narrow beam of the selected channel to transmit data for each of the at least two terminals.
  • the base station may further determine, according to the corrected signal strength value of the second SRS, whether there is at least two channel qualities of the channel to the terminal in each of the antennas that respectively transmit different narrow beams.
  • the antenna having better channel quality from the antenna transmitting the wide beam to the channel of the terminal; if the determination result is yes, it may be from the signal strength values of the respective corrected second SRS, Determining the maximum and second largest corrected second SRS signal strength values; further, determining the maximum corrected second SRS signal strength value and the second largest corrected second SRS signal strength value If the difference is less than the predetermined threshold, the narrow beam of the channel corresponding to the signal strength value of the maximum corrected second SRS may be selected, and the signal for transmitting the second modified second SRS may be selected.
  • a narrow beam of the channel of intensity values transmits data for the terminal. In this manner, two narrow beams with small difference in channel quality between the transmitted channels can be selected to jointly transmit data for the terminal, thereby obtaining gain of space division multiplexing.
  • the wide beam is used to transmit data for other terminals different from the at least two terminals.
  • the base station may transmit a cell-specific reference signal (CRS) using a wide beam; and a channel state information reference signal (CSI-) respectively set according to each narrow beam transmitted in advance for the base station.
  • CRS cell-specific reference signal
  • CSI- channel state information reference signal
  • RS channel state information reference signal
  • the channel state information reference signal CSI-RS is respectively transmitted by each narrow beam transmitted by the base station; wherein the CSI-RSs of different narrow beams are different from each other.
  • the CRS transmitted by the base station through the wide beam and the CSI-RS transmitted by each narrow beam will be further explained in Embodiment 1.
  • the base station may subsequently select a time-frequency resource for transmitting data for the terminal based on the channel status report fed back by the terminal to the reference signal received by the terminal.
  • the specific implementation process of the base station transmitting data for the at least two terminals by using the determined narrow beam on the first time-frequency resource may include: sub-step 1: the base station is configured for each terminal of the at least two terminals Execution: notifying the terminal of a resource configuration index of a CSI-RS configured for a narrow beam that transmits data for the terminal; and obtaining a corresponding channel state report fed back by the terminal to measure the CSI-RS; wherein, the narrow The CSI-RSs of the beams are different from each other.
  • the resource configuration indexes of different CSI-RSs are different from each other.
  • the CSI-RS matching the index may be measured to obtain the corresponding channel state. Report and feed back to the base station;
  • the base station determines the first time-frequency resource according to the channel status report that the at least two terminals respectively feed back to the base station;
  • the terminal feeds back the channel state of each subband on the full frequency band to the base station.
  • the base station can select a resource block with a better channel state, that is, a channel with a higher channel quality as a resource block for subsequent transmission of data for the terminal.
  • the resource block selected by the base station is the first time-frequency resource mentioned here.
  • the manner in which the base station determines the time-frequency resource for the subsequent transmission of the data according to the channel state report fed back by the terminal may be in a similar manner in the prior art, and therefore is not described herein again.
  • Sub-step 3 The base station transmits data to the at least two terminals by using the determined narrow beam on the first time-frequency resource.
  • the specific implementation process of the base station using the wide beam to transmit data different from the at least two terminals on the second time-frequency resource may include the following sub-steps:
  • Sub-step 1 the base station obtains a channel status report that is sent back to the base station by the other terminal by measuring the CRS received by the terminal;
  • Sub-step 2 The base station determines the second time-frequency resource according to the channel status report
  • the base station determines, according to the channel status report, that the second time-frequency resource is similar to the manner in which the base station described above determines the first time-frequency resource according to the channel status, and therefore is not described again.
  • Sub-step 3 The base station transmits data for the other terminal by using the wide beam on the second time-frequency resource.
  • the foregoing solution provided by the embodiment of the present invention simultaneously transmits a wide beam covering a coverage area of a sector not less than a preset base station by a base station, and a narrow beam whose coverage is completely within the coverage of the wide beam, thereby realizing utilization.
  • the wide beam further achieves the enhanced coverage of the sector and the system capacity by narrow beams.
  • This scheme does not affect the coverage relationship between sectors because it still maintains the wide beam-to-sector coverage of the base station without changing.
  • the solution does not require additional site backhaul resources and does not require additional standardization support.
  • the terminal uses a user equipment (UE) such as a mobile phone as an example, in order to avoid the narrow beam from being in the prior art.
  • UE user equipment
  • the impact of the UE attach procedure allows the base station to still utilize the wide beam, transmitting the CRS in full frequency bands over all subframes of the wide beam.
  • the base station transmits three wide beams while transmitting a wide beam, and the antenna for transmitting the wide beam has two ports, and the antenna for transmitting a single narrow beam is also two ports, the base station
  • the transmitted wide beam and narrow beam can form a coverage as shown in FIG.
  • FIG. 3 please refer to the explanation of the meanings of the various lines in Fig. 2, and will not be repeated here.
  • the base station can transmit CRS on all Resource Blocks (RBs) on the full band of the wide beam.
  • RBs Resource Blocks
  • FIG. 4a and FIG. 4b show the pattern of the RE occupied by the CRS transmitted by the base station on the antenna port Port 0 and the antenna port Port 1 at a RB granularity under the above-mentioned assumptions.
  • R0 and R1 are REs for mapping CRS on antenna port Port 0 and antenna port Port 1, respectively, / represents the number of OFDM symbols included in a single slot, and RE filled with lattice shadow is not available.
  • the RE of the antenna port ie, the antenna port Port O and the antenna port Port 1 described above
  • candidate REs (Candidate RE for PDSCH) for transmitting PDSCH are also marked in Figs. 4a and 4b, that is, REs that are not filled with any color.
  • the CRS is transmitted only by the wide beam, it can be ensured that when the base station transmits the wide beam and the narrow beam, the narrow beam transmitted by the base station does not affect the sector and the adjacent interval covered by the wide beam. Coverage relationship.
  • all channels based on CRS demodulation such as PDCCH, Physical Broadcast Channel (PBCH), etc., may also be transmitted by a wide beam.
  • each narrow beam can transmit different CSI-RS, and in addition, the narrow beam can transmit the CRS transmitted with the wide beam. The same CRS; or, the narrow beam may not transmit the CRS. It should be noted that, regardless of whether the narrow beam transmits the CRS, the wide and narrow beams in the embodiment 1 are the same in order to avoid the interference of the control channel transmitted on different beams and the possible handover of the user moving between different beams. PCI.
  • the CSI-RS can be transmitted without using a narrow beam to transmit the CRS signal.
  • the CSI-RS is a downlink pilot signal defined in the Rel-9 version of the LTE.
  • the minimum transmission period is 5 ms, and the occupied RE position can have 20 configurations. If the hypothetical base station transmits four narrow-wave beams simultaneously, and each narrow beam is transmitted on two antenna ports, four narrow beams can be sent to four different CSI-RSs respectively.
  • the pattern of the REs occupied by the four different CSI-RSs is shown in Figure 5a to Figure 5d.
  • FIG. 5a to FIG. 5d also indicate candidate REs for transmitting PDSCH, that is, REs that are not filled with any color, and even time slots ( Even slot ) and odd time slots ( Odd slots ) are indicated, due to the information. There is no need to improve the prior art, so it will not be described again.
  • the base station may notify the UE of the narrow beam that the CSI-RS pilot configuration (such as the resource configuration index of the CSI-RS) to use the narrow beam for data transmission, thereby indicating
  • the CSI-RS pilot configuration such as the resource configuration index of the CSI-RS
  • the CSI-RS is measured, and the channel status report is reported. Therefore, after receiving the channel state report, the base station can determine the quality of the channel transmitting the narrow beam antenna to the UE, and determine the quality of the channel according to the determined quality, and determine the downlink data to be used when transmitting the downlink data. Appropriate time-frequency resources.
  • the base station can utilize wide waves by using a wide beam.
  • the UE that bundles the data transmission transmits the CRS.
  • the base station can determine the quality of the channel of the antenna transmitting the wide beam to the UE, and according to the determined The quality of the channel determines the appropriate time-frequency resources needed to transmit downlink data using the wide beam.
  • Embodiment 3 the specific implementation manner of the base station selecting the time-frequency resource occupied by the downlink data transmitted by using different beams is shown in Embodiment 3 below.
  • the UE may be configured with a corresponding multiple CSI-RS resource configuration index, so that the UE may perform channel status report based on the multiple CSI-RSs.
  • the manner in which data is transmitted by multiple narrow beams for the same UE is shown in Embodiment 2 below.
  • the base station simultaneously transmits a wide beam and at least two narrow beams. Therefore, before transmitting data and indicating a CSI-RS configuration index for a specific UE, the specific The UE selects the appropriate one or more service beams.
  • the service beam when the service beam is selected for the UE, it may be selected based on the uplink signal or may be selected based on the downlink signal.
  • the base station selects a beam for which the UE transmits data based on the signal strength value of the SRS received by the antenna transmitting the wide beam and the antenna transmitting each narrow beam.
  • the UE may periodically send the SRS according to the configuration of the base station, so that the base station determines the uplink channel of the UE to the base station.
  • the SRS signals sent by different UEs can be distinguished by TDM/FDM/CDM.
  • an antenna for transmitting different beams in the base station records the signal strength value of the SRS transmitted by the UE, so that the base station is based on each antenna.
  • the signal strength value of the SRS transmitted by the UE recorded in the secondary time may respectively calculate an average value of the signal strength values of the SRSs transmitted by the UE recorded by each antenna.
  • the base station may correct each average value of the signal strength value of the SRS sent by the UE according to the preset correction value of the signal strength value.
  • the average value of the signal strength values of the SRS corresponding to the antenna can be corrected based on the first correction value set in advance for the antenna.
  • the specific correction method may be: subtracting the first correction value from the average value of the signal strength values of the SRS corresponding to the antenna, thereby corresponding to changing the average value of the signal strength values of the SRS corresponding to the antenna small.
  • different correction values can be configured for antennas transmitting different beams.
  • the number of beams transmitted by the base station, the transmit power of the beam, and/or the number of UEs that can be served for different beams, etc. may be used as a basis for configuring the above-mentioned correction value. For example, if the number of UEs that can be served for a wide beam is greater than the number of UEs served by any narrow beam, and the transmit power value of the wide beam is greater than the transmit power value of any narrow beam, it may be for transmitting a wide beam.
  • the antenna configuration has a smaller correction value, and a larger correction value is configured for the antenna transmitting the narrow beam, so that the probability that the wide beam is selected as the service beam for transmitting data to the UE is relatively large.
  • a larger correction value may be configured for the antenna transmitting the wide beam, and a smaller correction value may be configured for the antenna transmitting the narrow beam, thereby The probability that the narrow beam is selected as the service beam for transmitting data to the UE is relatively large.
  • a smaller correction value may be configured for the antenna transmitting the narrow beam, and an antenna configuration for transmitting other narrow beams may be configured.
  • a large correction value such that the probability that the narrow beam is selected as the serving beam of the UE is larger than other narrow beams.
  • Embodiment 2 after the correction of the average value of the signal strength values of the SRS of the UE received by the antenna transmitting the different beams is completed, based on the corrected signal strength value, according to a certain criterion, The UE of the SRS selects the service beam for which data is transmitted. For example, only the beam transmitted by the antenna corresponding to the maximum value of the corrected signal strength values may be selected as the beam for transmitting data for the UE.
  • the beams are narrow beams, and the difference between the maximum value and the second largest value is smaller than the specified difference. For the value, the narrow beam transmitted by the antenna corresponding to the maximum value and the second largest value may be selected as the beam for transmitting data of the UE.
  • Example 3
  • Embodiment 3 proposes a corresponding resource allocation mechanism to avoid strong interference between the two.
  • a resource allocation mechanism is provided, and the mechanism mainly includes:
  • the narrow beam does not transmit downlink data; while the time-frequency resources occupied by the downlink data transmitted by the narrow beam, the wide beam does not transmit downlink data. . That is, the time-frequency resources occupied by the downlink data transmitted by the wide beam and the narrow beam are staggered from each other.
  • the time-frequency resources occupied by the downlink data transmitted by the wide beam and the narrow beam respectively may be staggered by time division multiplexing (TDM) or frequency division multiplexing (FDM).
  • TDM time division multiplexing
  • FDM frequency division multiplexing
  • the downlink data transmission is performed by using space division multiplexing between the narrow beams, and different narrow beams can use the same time-frequency resources to transmit data for the respective served UEs.
  • the wide beam BeamO transmitted by the base station transmits data for UE0
  • the narrow beam Beam1 transmitted by the base station transmits data for UE1
  • the narrow beam Beam2 transmits data for UE2.
  • the RB occupied by the downlink data transmitted by the wide beam may be determined according to the channel state reported by the UE0 after measuring the CRS transmitted by the wide beam; similarly, the downlink data transmitted by the narrow beam Beaml is used.
  • the occupied RB may be determined according to a channel state report that is measured by UE1 after the measurement of the first CSI-RS sent by the narrow beam Beaml;
  • the RB occupied by the downlink data transmitted by the narrow beam Beam2 may be determined according to the channel state report fed back by the UE 2 to the second CSI-RS transmitted by the narrow beam Beam2.
  • the downlink data transmitted on the wide and narrow beams can be uniformly modulated and transmitted by the centralized baseband system.
  • the manner in which the time-frequency resources occupied by the downlink data transmitted by the wide beam and the narrow beam are mutually staggered can be dynamically adjusted. Specifically, whether the TDM method or the FDM method is used to offset the time-frequency resources occupied by the downlink data transmitted by the wide beam and the narrow beam respectively, the RBs occupied by the downlink data transmitted by the wide beam and the narrow beam respectively can be used. Dynamic Adjustment.
  • Embodiment 4 is mainly for the case where there are multiple narrow beams for transmitting data for the same UE, and how to make a plurality of narrow beam cooperative transmissions for transmitting data for the UE, thereby reducing mutual interference between the narrow beams.
  • each narrow beam that transmits data for the UE may send the same downlink data for the UE on the same RB.
  • the channel state report obtained by measuring the CSI-RS received by the UE may be selected from all narrow beams that transmit data for the UE, and the antenna with the best downlink channel quality of the UE is selected.
  • the narrow beam transmits downlink data for the UE.
  • the other narrow beams that are not selected in the narrow beam for transmitting data of the UE may not perform any downlink data transmission on the RB for transmitting the downlink data.
  • the narrow beam can be implemented without any adjustment to the existing antenna of the base station.
  • the sector is covered with the wide beam, so that the system capacity can be increased without affecting the coverage relationship between the sectors, and no additional standardization process is required, and the UE is not required to be upgraded.
  • the embodiment of the present invention further provides a communication device for the same inventive concept as the communication method provided by the embodiment of the present invention.
  • the communication device can transmit a wide beam and at least two narrow beams.
  • the schematic structural diagram of the device is as shown in FIG. 6, and mainly includes:
  • the data transmission module 62 is configured to transmit data for the at least two terminals by using the narrow beam determined by the narrow beam determining module 61 on the same time-frequency resource.
  • the wide beam covers one sector of the communication device, the coverage area of the narrow beam is completely within the coverage of the wide beam, and the wide beam and the narrow beam have the same PCI.
  • the communications apparatus may further include: a wide beam determining module, configured to determine that the wide beam transmits data to other terminals different from the at least two terminals, in order to implement the terminal service by using the wide beam;
  • the data transmission module 62 is further configured to utilize the wide beam to transmit data for the other terminal.
  • the data transmission module 62 is specifically configured to use the determined narrow beam to transmit data to the at least two terminals on the first time-frequency resource.
  • the data transmission module 62 is specifically configured to use the wide beam to transmit data for the other terminal on the second time-frequency resource different from the first time-frequency resource.
  • the wide beam determining module may be specifically divided into the following submodules: a signal receiving submodule, Receiving, by the antenna transmitting the wide beam and the narrow beam, respectively, the first channel sounding reference signal SRS sent by each terminal of the other terminals;
  • a channel quality determining submodule configured to determine, according to a signal strength value of the first SRS sent by each of the other terminals, respectively, received by the antenna that transmits the wide beam and the narrow beam, and determines that the wide beam and the narrow beam are transmitted from The channel quality of the channel of each antenna to each of the other terminals;
  • a wide beam determining submodule for comparing channel quality from a channel transmitting a wide beam to each of the other terminals compared to a channel quality from a channel transmitting the narrow beam to each of the other terminals
  • the wide beam is determined to transmit data for each of the other terminals.
  • the channel quality determining sub-module may be specifically configured to: Correction value of the signal strength value set by the narrow beam antenna, respectively Transmitting, by the antennas that transmit the wide beam and the narrow beam, respectively, the signal strength values of the first SRSs sent by each of the other terminals are corrected, and the signal strength values of the first modified SRSs are obtained;
  • the channel quality of the channel from each of the antennas transmitting the wide beam and the narrow beam to each of the other terminals is determined according to the signal strength value of each of the modified first SRSs.
  • the narrow beam determining module 61 may specifically include:
  • a signal receiving submodule configured to receive a second SRS sent by each of the at least two terminals by transmitting a wide beam and a narrow beam antenna
  • a channel quality determining submodule configured to determine, according to a signal strength value of the second SRS sent by each of the at least two terminals, respectively, according to the antenna that transmits the wide beam and the narrow beam, to determine the wide beam and the narrow beam from the transmission a channel quality of a channel of the beam to a channel of each of the at least two terminals;
  • a narrow beam determining submodule configured to compare channel quality from a channel transmitting the wide beam to each of the at least two terminals, from an antenna transmitting the narrow beam to the at least two When the channel quality of the channel of each terminal in the terminal is the best, it is determined that the narrow beam transmits data for each of the at least two terminals.
  • the channel quality determining sub-module may be specifically configured to: a signal strength value correction value respectively set by the beam and the narrow beam antenna, and a signal strength value of the second SRS transmitted by each of the at least two terminals respectively received by the antenna transmitting the wide beam and the narrow beam Performing a correction to obtain signal strength values of the respective corrected second SRSs;
  • the narrow beam determining submodule can be specifically used to:
  • the communication device further includes:
  • a reference signal sending module configured to send a cell-specific reference signal CRS by using a wide beam; and transmitting, according to a channel state information reference signal CSI-RS respectively set for each narrow beam transmitted by the communication device in advance, using the communication device
  • Each of the narrow beams respectively transmits a channel state information reference signal CSI-RS; wherein the CSI-RSs of different narrow beams are different from each other.
  • the data transmission module 62 is specifically configured to:
  • the data transmission module 62 is specifically configured to:
  • the determined wide beam is used to transmit data to the other terminal.
  • the above communication device provided by the embodiment of the invention can simultaneously transmit a wide beam covering one sector of the communication device, and a narrow beam covering the coverage completely within the coverage of the wide beam, thereby realizing the sector of the communication device by using the wide beam
  • the step is to achieve enhanced coverage of the sector by narrow beams to improve spectral efficiency.
  • This scheme does not affect the coverage relationship between sectors because it still maintains the wide beam-to-sector coverage of the communication device without changing.
  • the solution does not require additional site backhaul resources and does not require additional standardization support.
  • the present invention further provides another communication device for the same inventive concept as the communication method provided by the embodiment of the present invention.
  • the communication device can transmit a wide beam and at least two narrow beams.
  • the structure of the device is as shown in FIG. 7 , and mainly includes: a transceiver 72, configured to transmit, by using the narrow beam determined by the processor 71, the data to the at least two terminals on the same time-frequency resource;
  • the wide beam covers one sector of the communication device, the coverage area of the narrow beam is completely within the coverage of the wide beam, and the wide beam and the narrow beam have the same PCI.
  • the processor 71 is further configured to determine that the wide beam transmits data for other terminals different from the at least two terminals.
  • the transceiver 72 can also be used to utilize the wide beam to transmit data to the other terminals.
  • the transceiver 72 is specifically configured to transmit data to the at least two terminals by using the determined narrow wave bundle on the first time-frequency resource.
  • the transceiver 72 is specifically configured to use a wide beam to transmit data for the other terminal on a second time-frequency resource different from the first time-frequency resource.
  • the processor 71 is specifically configured to: determine, according to the first channel sounding reference signal SRS sent by each terminal of the other terminal that is received by the transceiver 72 by transmitting the wide beam and the narrow beam, respectively. a wide beam and a narrow beam antenna respectively to a channel quality of a channel of each of the other terminals; and comparing the channel from each of the antennas transmitting the narrow beam to each of the other terminals Channel quality, when the channel quality from the antenna transmitting the wide beam to the channel of each of the other terminals is the best, determining that the wide beam transmits data for each of the other terminals.
  • the processor 71 is specifically configured to: according to the foregoing, for transmitting the wide beam and the narrow beam a signal strength value correction value respectively set by the antenna, and correcting a signal strength value of the first SRS sent by each of the other terminals received by the antenna for transmitting the wide beam and the narrow beam, respectively, and obtaining each modified a signal strength value of the first SRS; determining a channel quality from a channel transmitting the wide beam and the narrow beam to a channel of each of the other terminals, respectively, according to the signal strength value of each of the modified first SRSs.
  • the processor 71 is specifically configured to: receive, according to the transceiver 72, the signal strength value of the second SRS sent by each of the at least two terminals by using the antenna that transmits the wide beam and the narrow beam respectively Determining a channel quality from a channel transmitting the wide beam and the narrow beam to a channel of each of the at least two terminals; comparing the antenna from the transmitting the wide beam to the at least two terminals The channel quality of the channel of each terminal, when the channel quality of the channel transmitting the narrow beam to the channel of each of the at least two terminals is the best, determining that the narrow beam is each of the at least two terminals Terminals transmit data.
  • the processor 71 is specifically configured to: receive, according to the signal strength value correction values respectively set for the antennas that transmit the wide beam and the narrow beam, respectively, the at least the antennas that transmit the wide beam and the narrow beam are received by the at least Correcting a signal strength value of the second SRS sent by each terminal of the two terminals to obtain a signal strength value of each modified second SRS; determining a slave transmission width according to the signal strength value of each corrected second SRS
  • the channel and the narrow beam antenna respectively correspond to the channel quality of the channel of each of the at least two terminals.
  • the processor 71 is specifically configured to: select, from a channel that transmits the narrow beam to a channel of each of the at least two terminals, a channel with the best channel quality; and determine that the channel selected by the transmission is narrow.
  • a beam transmits data for each of the at least two terminals.
  • the transceiver 72 is further configured to: send the cell-specific reference signal CRS by using a wide beam; and use the channel state information reference signal CSI-RS separately set for each narrow beam transmitted by the communication device in advance.
  • Each of the narrow beams transmitted by the communication device respectively transmits a channel state information reference signal CSI-RS; wherein the CSI-RSs of different narrow beams are different from each other.
  • the transceiver 72 is specifically configured to: separately perform, for each of the at least two terminals, a resource configuration index of a CSI-RS configured to be a narrow beam configured to transmit data for the terminal. Notifying the terminal; and obtaining a corresponding channel state report fed back by the terminal to measure the CSI-RS; and after the at least two terminals respectively feed back the channel state report to the communication device, the first time frequency resource may be It is determined by the processor 71 based on the above channel status report.
  • the transceiver 72 is specifically configured to: obtain, by the other terminal, a channel state report that is fed back to the communication device by measuring the received CRS; and send the communication device to the communication device at the other terminal After the feedback channel status report, the determined wide beam is used to transmit data to the other terminal on the second time-frequency resource.
  • the second time-frequency resource may be determined by the processor 71 according to the channel status report that the other terminal feeds back to the communication device by measuring the CRS received by the terminal.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the application can be in the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • the application can be in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明实施例提供一种通信方法及基站,通过基站发射覆盖基站的一个扇区的宽波束,以及覆盖范围完全处于该宽波束的覆盖范围内的窄波束,实现在利用宽波束使得基站的扇区的覆盖范围不发生变化的前提下,进一步通过窄波束来达到对扇区的增强覆盖从而提高频谱效率。该方案由于仍然会维持基站发射的宽波束对扇区的覆盖范围不发生变化,因此不会影响扇区之间的覆盖关系。并且,该方案不需要额外的站址回传资源,也不需要额外的标准化支持。

Description

通信方法及装置 技术领域
本发明涉及通信技术领域, 尤其涉及一种通信方法及装置。 背景技术
随着移动互联网的飞速发展, ***性的业务量增长对移动通信网络不断 提出新的需求, 从而使得各种新技术层出不穷。 例如正交频分多路复用
( Orthogonal Frequency Division Multipelexing, OFDM )技术、 多天线多输入 多输出 (Multiple Input Multiple Output, MIMO )技术、 中继技术、 载波聚合 ( Carrier Aggregation, CA )技术、协作多点( Coordinated Multi-Point, CoMP ) 传输技术等, 它们的共同点在于, 不断追求对移动通信网络的频谱效率和容 量的提升。
从理论上分析, 提升移动通信网络的频谱效率的核心就是提高信干噪比, 例如可以釆用干扰协调或功率控制等技术来达到这一目的。 而针对提升移动 通信网络的容量而言, 比较直观的方法就是增加移动通信网络的可用资源, 例如通过增加移动通信网络的可用带宽, 就可以实现直接提升其容量。 虽然 随着技术的发展, 移动通信网络的***带宽也不断提升, 但由于无线频谱资 源的稀缺性, 频谱资源的严重不足已经日益成为无线通信事业发展的瓶颈。
基于上述现状, 在频谱资源严重不足的现有状况下, 如何充分开发利用 有限的频谱资源, 提高频谱效率, 成为了当前通信界研究的热点课题之一。 而多天线技术, 因其能在不需要增加带宽的情况下提高传输效率而获得广泛 的青睐。 该技术的原理在于在单位物理区域内增加发射天线的数量, 从而能 够在不需要增加带宽的条件下, 更充分的利用信道特征, 提高时频资源的复 用程度, 从而极大地提高了频谱效率。 具体而言, 在釆用多天线技术后, 如 果能够保证发射端与接收端的天线阵列之间构成的空域子信道足够不同, 则 能够实现在不同的子信道上传输不同的数据流, 从而在时域和频域之外额外 提供空域的维度, 使得多个用户可共享相同的时间、 频率或码域资源, 从而 有效提高频谱效率和容量。 现有技术中, 异构网络(Heterogeneous Network, HetNet )、 分布式天线***( Distributed Antenna System, DAS )、 虚拟多扇区 和 MIMO技术等均可以被认为是基于上述原理的技术。
目前, 上述通过增加单位区域内的天线数量以提高频谱效率的各种现有 技术或多或少存在着诸如需要额外的站址回传资源、 影响扇区之间的覆盖关 系, 以及需要额外的标准化支持的缺陷。 发明内容
本发明实施例提供一种通信方法及基站, 用以在不需要额外的站址回传 资源、 也不会影响扇区之间的覆盖关系的前提下, 可以提高频谱效率。
本发明实施例釆用以下技术方案:
第一方面, 提供一种通信方法, 包括: 基站确定至少两个窄波束为至少 两个终端传输数据, 其中, 所述基站发射宽波束和至少两个窄波束; 所述基 站在相同的时频资源上, 利用确定出的窄波束为所述至少两个终端传输数据; 其中, 所述宽波束覆盖所述基站的一个扇区, 所述窄波束的覆盖区域完全处 于所述宽波束的覆盖范围之内, 且所述宽波束和所述窄波束具备相同的物理 小区标识 PCI。
结合第一方面, 在第一种可能的实现方式中, 所述方法还包括: 所述基 站利用所述宽波束为所述其他终端传输数据。
结合第一方面的第一种可能的实现方式, 在第二种可能的实现方式中, 所述基站在相同的时频资源上, 利用确定出的窄波束为所述至少两个终端传 输数据, 包括: 所述基站在第一时频资源上, 利用确定出的窄波束为所述至 少两个终端传输数据。
结合第一方面的第二种可能的实现方式, 在第三种可能的实现方式中, 所述基站利用所述宽波束为所述其他终端传输数据, 包括: 所述基站在不同 于所述第一时频资源的第二时频资源上, 利用所述宽波束为所述其他终端传 输数据。
结合第一方面的第一种可能的实现方式至第三种可能的实现方式中的任 一实现方式, 在第四种可能的实现方式中, 所述基站确定所述宽波束为所述 其他终端传输数据, 包括: 所述基站通过发射所述宽波束和所述窄波束的天 线, 分别接收所述其他终端中的每个终端发送的第一信道探测参考信号 SRS; 根据发射所述宽波束和所述窄波束的天线分别接收到的由所述其他终端中的 每个终端发送的所述第一 SRS的信号强度值, 确定从发射所述宽波束和所述 窄波束的天线分别到所述其他终端中的每个终端的信道的信道质量; 在比较 出相比于从发射所述窄波束的天线到所述其他终端中的每个终端的信道的信 道质量, 从发射所述宽波束的天线到所述其他终端中的每个终端的信道的信 道质量最好时, 确定所述宽波束为所述其他终端中的每个终端传输数据。
结合第一方面的第四种可能的实现方式, 在第五种可能的实现方式中, 所述基站根据发射所述宽波束和所述窄波束的天线分别接收到的由所述其他 终端中的每个终端发送的所述第一 SRS的信号强度值, 确定从发射所述宽波 束和所述窄波束的天线分别到所述其他终端中的每个终端的信道的信道质 量, 包括: 所述基站根据预先针对发射所述宽波束和所述窄波束的天线所分 别设置的信号强度值修正值, 对发射所述宽波束和所述窄波束的天线分别接 收到的由所述其他终端中的每个终端发送的所述第一 SRS的信号强度值进行 修正, 得到各个修正后的所述第一 SRS的信号强度值; 根据所述各个修正后 的所述第一 SRS的信号强度值, 确定从发射所述宽波束和所述窄波束的天线 分别到所述其他终端中的每个终端的信道的信道质量。
结合第一方面的第一种可能的实现方式至第五种可能的实现方式中的任 一实现方式, 在第六种可能的实现方式中, 所述基站确定至少两个窄波束为 至少两个终端传输数据, 包括: 所述基站通过发射所述宽波束和所述窄波束 的天线, 分别接收所述至少两个终端中的每个终端发送的第二 SRS; 根据发 射所述宽波束和所述窄波束的天线分别接收到的由所述至少两个终端中的每 个终端发送的所述第二 SRS的信号强度值, 确定从发射所述宽波束和所述窄 波束的天线分别到所述至少两个终端中的每个终端的信道的信道质量; 在比 较出相比于从发射所述宽波束的天线到所述至少两个终端中的每个终端的信 道的信道质量, 从发射所述窄波束的天线到所述至少两个终端中的每个终端 的信道的信道质量最好时, 确定所述窄波束为所述至少两个终端中的每个终 端传输数据。
结合第一方面的第六种可能的实现方式, 在第七种可能的实现方式中, 所述基站根据发射所述宽波束和所述窄波束的天线分别接收到的由所述至少 两个终端中的每个终端发送的所述第二 SRS的信号强度值, 确定从发射所述 宽波束和所述窄波束的天线分别到所述至少两个终端中的每个终端的信道的 信道质量, 包括: 所述基站根据预先针对发射所述宽波束和所述窄波束的天 线所分别设置的信号强度值修正值, 对发射所述宽波束和所述窄波束的天线 分别接收到的由所述至少两个终端中的每个终端发送的所述第二 SRS的信号 强度值进行修正, 得到各个修正后的所述第二 SRS的信号强度值; 根据所述 各个修正后的所述第二 SRS的信号强度值, 确定从发射所述宽波束和所述窄 波束的天线分别到所述至少两个终端中的每个终端的信道的信道质量。
结合第一方面的第七种可能的实现方式, 在第八种可能的实现方式中, 在比较出相比于从发射所述宽波束的天线到所述至少两个终端中的每个终端 的信道的信道质量, 从发射所述窄波束的天线到所述至少两个终端中的每个 终端的信道的信道质量最好时, 确定所述窄波束为所述至少两个终端中的每 个终端传输数据, 包括: 所述基站从发射所述窄波束的天线到所述至少两个 终端中的每个终端的信道中, 选取信道质量最好的信道; 并确定发送选取的 信道的窄波束为所述至少两个终端中的每个终端传输数据。
结合第一方面的第三种可能的实现方式, 在第九种可能的实现方式中, 所述方法还包括:
所述基站釆用所述宽波束发送小区专用参考信号 CRS; 以及 所述基站根据预先针对所述基站发射的各窄波束所分别设置的信道状态 信息参考信号 CSI-RS, 釆用该基站发射的各窄波束分别发送信道状态信息参 考信号 CSI-RS; 其中, 不同窄波束被设置的 CSI-RS互不相同。
结合第一方面的第九种可能的实现方式, 在第十种可能的实现方式中, 所述基站在第一时频资源上, 利用确定出的窄波束为所述至少两个终端传输 数据, 包括: 所述基站对于所述至少两个终端中的每个终端分别执行: 将为 为该终端传输数据的窄波束被配置的 CSI-RS的资源配置索引通知该终端; 并 获得该终端对所述 CSI-RS进行测量而反馈的相应的信道状态报告; 根据所述 至少两个终端分别向所述基站反馈的信道状态报告, 确定所述第一时频资源; 在所述第一时频资源上, 利用确定出的窄波束为所述至少两个终端传输数据。
结合第一方面的第九种可能的实现方式, 在第十一种可能的实现方式中, 所述基站在所述第二时频资源上, 利用所述宽波束为所述其他终端传输数据, 包括: 所述基站获得所述其他终端通过对其接收到的所述 CRS的测量而向所 述基站反馈的信道状态报告; 根据所述信道状态报告, 确定所述第二时频资 源; 在所述第二时频资源上, 利用确定出的宽波束为所述其他终端传输数据。
第二方面, 提供一种通信装置, 所述通信装置发射宽波束和至少两个窄 波束; 所述装置包括: 窄波束确定模块, 用于确定至少两个窄波束为至少两 个终端传输数据; 数据传输模块, 用于在相同的时频资源上, 利用窄波束确 盖所述通信装置的一个扇区, 所述窄波束的覆盖区域完全处于所述宽波束的 覆盖范围之内, 且所述宽波束和所述窄波束具备相同的物理小区标识 PCI。
结合第二方面, 在第一种可能的实现方式中, 所述装置还包括: 宽波束 确定模块, 用于确定所述宽波束为不同于所述至少两个终端的其他终端传输 数据; 所述数据传输模块还用于利用所述宽波束为所述其他终端传输数据。
结合第二方面的第一种可能的实现方式, 在第二种可能的实现方式中, 所述数据传输模块具体用于在第一时频资源上, 利用确定出的窄波束为所述 至少两个终端传输数据。 结合第二方面的第二种可能的实现方式, 在第三种可能的实现方式中, 所述数据传输模块具体用于在不同于所述第一时频资源的第二时频资源上, 利用所述宽波束为所述其他终端传输数据。
结合第二方面的第一种至第三种可能的实现方式中的任一实现方式, 在 第四种可能的实现方式中, 所述宽波束确定模块具体包括: 信号接收子模块, 用于通过发射所述宽波束和所述窄波束的天线, 分别接收所述其他终端中的 每个终端发送的第一信道探测参考信号 SRS; 信道质量确定子模块, 用于根 据发射所述宽波束和所述窄波束的天线分别接收到的由所述其他终端中的每 个终端发送的所述第一 SRS的信号强度值, 确定从发射所述宽波束和所述窄 波束的天线分别到所述其他终端中的每个终端的信道的信道质量; 宽波束确 定子模块, 用于在比较出相比于从发射所述窄波束的天线到所述其他终端中 的每个终端的信道的信道质量, 从发射所述宽波束的天线到所述其他终端中 的每个终端的信道的信道质量最好时, 确定所述宽波束为所述其他终端中的 每个终端传输数据。
结合第二方面的第四种可能的实现方式, 在第五种可能的实现方式中, 所述信道质量确定子模块具体用于: 根据预先针对发射所述宽波束和所述窄 波束的天线所分别设置的信号强度值修正值, 对发射所述宽波束和所述窄波 束的天线分别接收到的由所述其他终端中的每个终端发送的所述第一 SRS的 信号强度值进行修正, 得到各个修正后的所述第一 SRS的信号强度值; 根据 所述各个修正后的所述第一 SRS的信号强度值, 确定从发射所述宽波束和所 述窄波束的天线分别到所述其他终端中的每个终端的信道的信道质量。
结合第二方面的第一种至第五种可能的实现方式中的任一实现方式, 在 第六种可能的实现方式中, 所述窄波束确定模块具体包括: 信号接收子模块, 用于通过发射所述宽波束和所述窄波束的天线, 分别接收所述至少两个终端 中的每个终端发送的第二 SRS; 信道质量确定子模块, 用于根据发射所述宽 波束和所述窄波束的天线分别接收到的由所述至少两个终端中的每个终端发 送的所述第二 SRS的信号强度值, 确定从发射所述宽波束和所述窄波束的天 线分别到所述至少两个终端中的每个终端的信道的信道质量; 窄波束确定子 模块, 用于在比较出相比于从发射所述宽波束的天线到所述至少两个终端中 的每个终端的信道的信道质量, 从发射所述窄波束的天线到所述至少两个终 端中的每个终端的信道的信道质量最好时, 确定所述窄波束为所述至少两个 终端中的每个终端传输数据。
结合第二方面的第六种可能的实现方式, 在第七种可能的实现方式中, 所述信道质量确定子模块具体用于: 根据预先针对发射所述宽波束和所述窄 波束的天线所分别设置的信号强度值修正值, 对发射所述宽波束和所述窄波 束的天线分别接收到的由所述至少两个终端中的每个终端发送的所述第二
SRS的信号强度值进行修正,得到各个修正后的所述第二 SRS的信号强度值; 根据所述各个修正后的所述第二 SRS的信号强度值, 确定从发射所述宽波束 和所述窄波束的天线分别到所述至少两个终端中的每个终端的信道的信道质 量。
结合第二方面的第七种可能的实现方式, 在第八种可能的实现方式中, 所述窄波束确定子模块具体用于: 在比较出相比于从发射宽波束的天线到所 述至少两个终端中的每个终端的信道的信道质量, 从发射窄波束的天线到所 述至少两个终端中的每个终端的信道的信道质量最好时, 从发射所述窄波束 的天线到所述至少两个终端中的每个终端的信道中, 选取信道质量最好的信 道; 并确定发送选取的信道的窄波束为所述至少两个终端中的每个终端传输 数据。
结合第二方面的第三种可能的实现方式, 在第九种可能的实现方式中, 所述装置还包括:
参考信号发送模块, 用于釆用所述宽波束发送小区专用参考信号 CRS; 并根据预先针对发射的各窄波束所分别设置的信道状态信息参考信号 CSI-RS, 釆用所述各窄波束分别发送信道状态信息参考信号 CSI-RS; 其中, 不同窄波束被设置的 CSI-RS互不相同。
结合第二方面的第九种可能的实现方式中的任一实现方式, 在第十种可 能的实现方式中, 所述数据传输模块具体用于: 对于所述至少两个终端中的 每个终端分别执行: 将为为该终端传输数据的窄波束被配置的 CSI-RS的资源 配置索引通知该终端; 并获得该终端对所述 CSI-RS进行测量而反馈的相应的 信道状态报告; 根据所述至少两个终端分别向所述装置反馈的信道状态报告, 确定所述第一时频资源; 在所述第一时频资源上, 利用确定出的窄波束为所 述至少两个终端传输数据。
结合第二方面的第九种可能的实现方式中, 在第十一种可能的实现方式 中, 所述数据传输模块具体用于: 获得所述其他终端通过对其接收到的所述 CRS 的测量而向所述装置反馈的信道状态报告; 根据所述信道状态报告, 确 定所述第二时频资源; 在所述第二时频资源上, 利用确定出的宽波束为所述 其他终端传输数据。
本发明实施例提供的上述方案的技术效果如下:
发明实施例提供的上述方案通过基站同时发射覆盖基站的一个扇区的宽 波束, 以及覆盖范围完全处于该宽波束的覆盖范围内的窄波束, 实现在利用 宽波束使得基站的扇区的覆盖范围不发生变化的前提下, 进一步通过窄波束 来达到对扇区的增强覆盖从而提高频谱效率。 该方案由于仍然会维持基站发 射的宽波束对扇区的覆盖范围不发生变化, 因此不会影响扇区之间的覆盖关 系。 并且, 该方案不需要额外的站址回传资源, 也不需要额外的标准化支持。 附图说明
图 1为本发明实施例提供的一种通信方法的具体实现流程示意图; 图 2 为按照本发明实施例提供的方案, 在不同扇区中部署的宽波束和窄 波束的示意图;
图 3为实施例 1中的基站所发射的宽波束和窄波束的覆盖范围示意图; 图 4a为实施例 1中,在一个 RB粒度上,基站利用宽波束在天线端口 Port 0上发送的 CRS所占用的 RE的图样;
图 4b为实施例 1中,在一个 RB粒度上,基站利用宽波束在天线端口 Port 1上发送的 CRS所占用的 RE的图样;
图 5a为实施例 1中, 在一个 RB粒度上, 第一种 CSI-RS所占用的 RE的 图样;
图 5b为实施例 1中, 在一个 RB粒度上, 第二种 CSI-RS所占用的 RE的 图样;
图 5c为实施例 1中, 在一个 RB粒度上, 第三种 CSI-RS所占用的 RE的 图样;
图 5d为实施例 1中, 在一个 RB粒度上, 第四种 CSI-RS所占用的 RE的 图样;
图 6为本发明实施例提供的一种通信装置的具体结构示意图;
图 7为本发明实施例提供的另一种通信装置的具体结构示意图。 具体实施方式
以下结合说明书附图对本发明的实施例进行说明, 应当理解, 此处所描 述的实施例仅用于说明和解释本发明, 并不用于限制本发明。 并且在不冲突 本发明实施例提供一种如图 1 所示的通信方法, 该方法主要包括下述步 骤:
步骤 11 ,基站确定至少两个由该基站发射的窄波束为至少两个终端传输 数据;
其中, 该基站可以发射宽波束和至少两个窄波束, 而上述的 "至少两个 终端" 为处于该基站所确定出的、 将要为该些终端传输数据的各窄波束的覆 盖范围内的终端。 具体地, 假设基站当前发射的窄波束分别窄波束 1、 窄波束 2和窄波束 3 , 且有: 终端 1处于窄波束 1的覆盖范围内、 终端 2处于窄波束 2的覆盖范围内,终端 3既处于窄波束 2的覆盖范围又处于窄波束 3的覆盖范 围内。 那么, 基站可以依据某种确定规则, 将窄波束 1确定为为终端 1传输 数据的波束、 将窄波束 2确定为为终端 2传输数据的波束, 并将窄波束 2和 窄波束 3共同确定为为终端 3传输数据的波束。 针对这里所述的确定规则, 其可以与基站所接收到的终端 1、终端 2和终端 3所分别发送的信道探测参考 信号 SRS的信号强度值有关。 具体的确定规则将在后文进行说明, 此处不再 赘述。
本发明实施例中, 该基站所发射的宽波束和窄波束可以满足: 宽波束覆 盖该基站的一个扇区; 窄波束的覆盖区域小于宽波束的覆盖区域; 窄波束的 覆盖区域完全处于宽波束的覆盖范围之内; 且宽波束和窄波束具备相同的物 理小区标识( Physical Cell Identifier, PCI )。 由于宽波束和窄波束具备相同的 PCI, 因此可以避免宽、 窄波束分别釆用不同的 PCI而导致宽、 窄波束之间干 扰过大, 从而使得终端无法正常接收宽波束或窄波束的问题。
在本发明实施例中, 以宏基站为例, 可以在保持现有宏基站的天线部署 不变的情况下, 通过额外形成若干个水平波束宽度(Horizontal Bandwidth ) 较窄的窄波束, 指向宏基站覆盖区域内的特定区域, 从而实现该宏基站覆盖 区域的容量增强。 如图 2 所示, 粗实线所勾勒的范围表示宏基站所发射的三 个宽波束的覆盖范围; 细实线所勾勒的范围则表示宏基站在发射所述三个宽 波束的同时所发射的多个窄波束的覆盖范围; 虚线所勾勒的范围表示宏基站 的扇区。 其中, 细实线所勾勒的单个封闭区域表示单个窄波束的覆盖范围。
值得说明的是, 图 2所示的不同扇区中部署的窄波束的数量可以不同。 一般说来, 任意扇区中部署的窄波束的数量与该扇区内的终端的分布情况以 及该扇区的容量需求等有关。 此外, 不同窄波束的天线配置也可以互不相同。 具体而言, 这里所说的天线配置可以包括天线的水平指向、 发射的波束宽度、 下倾角、 发射功率和 /或端口 (Port )数等指标的配置。
各窄波束的天线配置可以为静态配置, 也可以为半静态配置。 其中, 静 态配置是指基于网络规划来为天线配置诸如上述的指标, 且该些指标一旦被 配置完成, 后续一般不会进行调整; 而半静态配置则是指可以先基于网络规 划来为天线配置诸如上述的指标, 但后续当基站统计出一段时间内 (这里所 说的一段时间可以是一个小时, 也可以是一天, 等等) 所产生的一些与天线 发射的波束相关的信息 (如天线所服务的终端的数量等等信息)后, 再根据 该信息, 对为天线配置的指标进行配置。 比如, 若基站统计出在一个小时内, 具有相邻覆盖范围的两个窄波束 A和 B中, 窄波束 A服务的终端较多, 窄波 束 B服务的终端较少,则可以将发射窄波束 A的天线的发射的波束宽度调小, 而将发射窄波束 B的天线的发射的波束宽度调大, 并且还可以将发射窄波束 B的天线的发射功率调大。
步骤 12, 该基站在相同的时频资源上, 利用确定出的窄波束为上述至少 两个终端传输数据。
本发明实施例提供的方法通过基站同时发射覆盖基站的一个扇区的宽波 束, 以及覆盖范围完全处于该宽波束的覆盖范围内的窄波束, 可以实现在利 用宽波束使得基站的扇区的覆盖范围不发生变化的前提下, 进一步通过窄波 束来为终端传输数据, 从而达到对扇区的增强覆盖以及提高***容量的目的。
本发明实施例中, 基站在相同的时频资源上, 利用确定出的窄波束为至 少两个终端传输数据的模式可以但不限于包括下述几种及其组合:
1、 基站按照利用不同窄波束分别为不同终端传输数据的方式, 在相同的 时频资源上, 利用确定出的窄波束为至少两个终端传输数据;
2、 基站按照利用至少两个窄波束为同一终端传输数据的方式, 在相同的 时频资源上, 利用确定出的窄波束为至少两个终端传输数据。
具体而言, 若假设: 基站发射的窄波束分别为窄波束 A、 窄波束 B、 窄波 束 C和窄波束 D, 扇区宽波束覆盖范围内存在终端 a、 终端 b、 终端 c和终端 d, 且各终端所处范围如下:
终端 a处于窄波束 A的覆盖范围之内;
终端 b处于窄波束 A和窄波束 B的共同覆盖范围之内;
终端 c处于窄波束 C的覆盖范围之内;
终端 d处于窄波束 C和窄波束 D的共同覆盖范围之内。
那么, 基于这样的假设, 按照上述第 1 种模式, 基站可以在相同的时频 资源上, 利用窄波束 A为终端 a传输数据, 并利用窄波束 C为终端 c传输数 据。 而按照上述第 2种模式,基站则可以在相同的时频资源上, 利用窄波束 A 和窄波束 B共同为终端 b传输数据、 利用窄波束 C和窄波束 D共同为终端 d 传输数据。
可选的, 本发明实施例提供的上述方法还可以进一步包括下述步骤: 用该宽波束为上述其他终端传输数据。
本发明实施例中, 对该步骤与上述步骤 11和步骤 12的先后执行顺序不 做规定, 即该步骤可以是在步骤 12之后再执行, 也可以是与步骤 11并行执 行, 等等。
通过本发明实施例提供的上述方法进一步包括上述步骤, 可以实现基站 利用该基站发射的宽波束和各窄波束分别为不同终端传输数据, 从而可以提 高***容量。
可选的, 当基站分别利用该基站发射的宽波束和窄波束为不同终端传输 数据时, 上述步骤 12的具体实现方式可以包括: 基站在第一时频资源上, 利 用确定出的窄波束为前文所述的至少两个终端传输数据。 类似地, 基站利用 宽波束为其他终端传输数据的具体实现方式则可以包括: 基站在不同于第一 时频资源的第二时频资源上, 利用宽波束为所述其他终端传输数据。 按照这 样的实现方式, 可以使得宽波束和窄波束在分别为不同的终端传输数据时, 釆用的是相互错开的时频资源, 从而避免宽波束和窄波束在分别为不同的终 端传输数据时的相互干扰。
本发明实施例中, 基站无论是确定宽波束为终端传输数据, 还是确定窄 波束为终端传输数据, 其确定依据都可以是终端发送的信道探测参考信号 ( Sounding Reference Signals, SRS )。 或者, 若不考虑波束为终端提供的服务 质量的高低, 基站也可以不以终端发送的 SRS为依据, 而是一旦检测到某终 端移动到某波束的覆盖范围内, 就选取该波束为为该终端服务的波束, 即选 取该波束为该终端传输数据。
具体而言, 基站确定宽波束为其他终端传输数据的过程可以包括: 基站通过发射宽波束和窄波束的天线, 分别接收所述其他终端中的每个 终端发送的第一 SRS; 根据发射宽波束和窄波束的天线分别接收到的由所述 其他终端中的每个终端发送的第一 SRS的信号强度值, 确定从发射宽波束和 窄波束的天线分别到所述其他终端中的每个终端的信道的信道质量; 在比较 出相比于从发射窄波束的天线到所述其他终端中的每个终端的信道的信道质 量, 从发射宽波束的天线到所述其他终端中的每个终端的信道的信道质量最 好时, 确定宽波束为所述其他终端中的每个终端传输数据。
比如, 4艮设基站发射的窄波束分别为窄波束 、 窄波束 B、 窄波束 C, 且 假设上述的 "其他终端" 包括处于该基站扇区宽波束覆盖范围内的终端 a、 终 端1)。 此外, 假设发射宽波束 A的天线接收到的由终端 a发送的第一 SRS的 信号强度值为 -70dBm、发射宽波束 A的天线接收到的由终端 b发射的第一 SRS 的信号强度值为 -74dBm; 发射窄波束 B的天线接收到的由终端 a发送的第一 SRS的信号强度值为 -76dBm、 发射窄波束 B的天线接收到的由终端 b发送的 第一 SRS的信号强度值为 -78dBm;发射窄波束 C的天线接收到的由终端 a发 送的第一 SRS的信号强度值为 -78 dBm、 发射窄波束 C的天线接收到的由终 端 b发送的第一 SRS的信号强度值为 -79dBm。 由于天线所接收到的来自终端 的第一 SRS 的信号强度值可以直接体现从天线到终端的信道的信道质量高 低, 且信号强度值越高, 说明相应的信道的信道质量越好。
基于上述描述可知, 针对终端 a而言, 发射宽波束 A的天线接收到的由 终端 a发送的第一 SRS的信号强度值为 -70dBm,其不仅比发射窄波束 B的天 线接收到的由终端 a发送的第一 SRS的信号强度值 -76dBm大,也比发射窄波 束 C的天线接收到的由终端 a发送的第一 SRS的信号强度值 -78 dBm大, 从 而从发射宽波束 A的天线到终端 a的信道的信道质量较高, 因此可以确定宽 波束 A作为为终端 a传输数据的波束。
类似地, 针对终端 b而言, 发射宽波束 A的天线接收到的由终端 b发送 的第一 SRS的信号强度值为 -74dBm,其不仅比发射窄波束 B的天线接收到的 由终端 b发送的第一 SRS的信号强度值 -78dBm大, 也比发射窄波束 C的天 线接收到的由终端 b发送的第一 SRS的信号强度值 -79dBm大,从而从发射宽 波束 A的天线到终端 b的信道的信道质量较高, 因此可以确定宽波束 A作为 为终端 b传输数据的波束。
可选的, 基站根据发射宽波束和窄波束的天线分别接收到的由所述其他 终端中的每个终端发送的第一 SRS的信号强度值, 确定从发射宽波束和窄波 束的天线分别到所述其他终端中的每个终端的信道的信道质量的过程具体可 以包括下述步骤:
基站根据预先针对发射宽波束和窄波束的天线所分别设置的信号强度值 修正值, 对发射宽波束和窄波束的天线分别接收到的由所述其他终端中的每 个终端发送的第一 SRS的信号强度值进行修正, 得到各个修正后的第一 SRS 的信号强度值; 基站根据各个修正后的第一 SRS的信号强度值, 确定从发射 宽波束和窄波束的天线分别到所述其他终端中的每个终端的信道的信道质 量。
其中, 一个具体的根据信号强度值修正值对天线接收到的第一 SRS的信 号强度值进行修正的例子为: 假设基站发射的波束包括一个宽波束和两个窄 波束, 且发射宽、 窄波束的天线分别接收到的第一 SRS的信号强度值分别为 -70dBm、 -72dBm和 -77dBm, 且分别针对发射宽、 窄波束的天线所设置的信 号强度修正值为 3dB、 6dB和 6dB。 那么, 对 -70dBm、 -72dBm和 -77dBm这 几个信号强度值进行修正后得到的各个修正后的第一 SRS信号强度值分别为 -67 dBm, -66dBm, -71dBm。 其中, 针对发射宽波束和窄波束的天线所分别 设置的信号强度值修正值可以与发射宽波束和窄波束的天线的天线增益、 发 射窄波束的天线数量、 不同波束所分别服务的终端数量、 不同波束的发射功 率等因素有关。
类似地, 基站确定至少两个该基站发射的窄波束为至少两个终端传输数 据的过程可以包括:
基站通过发射宽波束和窄波束的天线, 分别接收所述至少两个终端中的 每个终端发送的第二 SRS; 根据发射宽波束和窄波束的天线分别接收到的由所述至少两个终端中的 每个终端发送的第二 SRS的信号强度值, 确定从发射宽波束和窄波束的天线 分别到所述至少两个终端中的每个终端的信道的信道质量;
在比较出相比于从发射宽波束的天线到所述至少两个终端中的每个终端 的信道的信道质量, 从发射窄波束的天线到所述至少两个终端中的每个终端 的信道的信道质量最好时, 确定窄波束为所述至少两个终端中的每个终端传 输数据。
比如,仍然假设基站发射的窄波束分别为窄波束 A、窄波束 B、窄波束 C, 且假设上述的 "至少两个终端" 包括处于该基站扇区宽波束覆盖范围内的终 端^ 终端 d。 此外, 假设发射宽波束 A的天线接收到的由终端 c发送的第二 SRS的信号强度值为 -79dBm、 发射宽波束 A的天线接收到的由终端 d发射的 第二 SRS的信号强度值为 -78dBm;发射窄波束 B的天线接收到的由终端 c发 送的第二 SRS的信号强度值为 -76dBm、发射窄波束 B的天线接收到的由终端 d发送的第二 SRS的信号强度值为 -76dBm; 发射窄波束 C的天线接收到的由 终端 c发送的第二 SRS的信号强度值为 -75dBm、发射窄波束 C的天线接收到 的由终端 d发送的第二 SRS的信号强度值为 -73dBm。 由于天线所接收到的来 自终端的第二 SRS的信号强度值可以直接体现从天线到终端的信道的信道质 量高低, 且信号强度值越高, 说明相应的信道的信道质量越好。
基于上述描述可知, 针对终端 c而言, 发射宽波束 A的天线接收到的由 终端 c发送的第二 SRS的信号强度值为 -79dBm,其不仅比发射窄波束 B的天 线接收到的由终端 c发送的第二 SRS的信号强度值 -76dBm小,也比发射窄波 束 C的天线接收到的由终端 c发送的第二 SRS的信号强度值 -75 dBm小, 从 而可以确定从发射窄波束的天线到终端 c 的信道的信道质量较高, 尤其是发 送窄波束 C的天线到终端 c的信道的信道质量较高, 因此可以确定窄波束 C 作为为终端 c传输数据的波束。
类似地, 针对终端 d而言, 发射宽波束 A的天线接收到的由终端 d发送 的第二 SRS的信号强度值为 -78dBm,其不仅比发射窄波束 B的天线接收到的 由终端 d发送的第二 SRS的信号强度值 -76dBm小, 也比发射窄波束 C的天 线接收到的由终端 d发送的第二 SRS的信号强度值 -75dBm小,从而可以确定 从发射窄波束的天线到终端 d的信道的信道质量较高, 尤其是发送窄波束 C 的天线到终端 d的信道的信道质量较高, 因此可以确定窄波束 C作为为终端 d传输数据的波束。
可选的, 基站根据发射宽波束和窄波束的天线分别接收到的由所述至少 两个终端中的每个终端发送的第二 SRS的信号强度值, 确定从发射宽波束和 窄波束的天线分别到所述至少两个终端中的每个终端的信道的信道质量的过 程具体可以包括:
首先, 基站根据预先针对发射宽波束和窄波束的天线所分别设置的信号 强度值修正值, 对发射宽波束和窄波束的天线分别接收到的由所述至少两个 终端中的每个终端发送的第二 SRS的信号强度值进行修正, 得到各个修正后 的第二 SRS的信号强度值。 其中, 根据信号强度值修正值对第二 SRS的信号 强度值进行修正的方式与前文类似, 在此不再赘述。 然后, 基站根据各个修 正后的第二 SRS的信号强度值, 确定从发射宽波束和窄波束的天线分别到所 述至少两个终端中的每个终端的信道的信道质量。
可选的, 基站在比较出相比于从发射所述宽波束的天线到所述至少两个 终端中的每个终端的信道的信道质量, 从发射所述窄波束的天线到所述至少 两个终端中的每个终端的信道的信道质量最好时, 确定所述窄波束为所述至 少两个终端中的每个终端传输数据的具体实现过程可以包括: 基站从发射窄 波束的天线到所述至少两个终端中的每个终端的信道中, 选取信道质量最好 的信道; 并确定发送选取的信道的窄波束为所述至少两个终端中的每个终端 传输数据。
本发明实施例中,基站还可以根据各个修正后的第二 SRS的信号强度值, 先判断在分别发射不同窄波束的各天线中, 是否存在至少两个到该终端的信 道的信道质量相比于从发射宽波束的天线到该终端的信道的信道质量更好的 天线; 若判断结果为是, 则可以从各个修正后的第二 SRS的信号强度值中, 确定最大和次大的修正后的第二 SRS的信号强度值; 进一步地, 若判断出该 最大的修正后的第二 SRS的信号强度值与次大的修正后的第二 SRS的信号强 度值之差小于预定阔值, 则可以选取用于发送该最大的修正后的第二 SRS的 信号强度值所对应的信道的窄波束,以及用于发送该次大的修正后的第二 SRS 的信号强度值的信道的窄波束为该终端传输数据。 按照这样的方式, 可以选 取发送的信道之间的信道质量差异较小的两个窄波束联合为该终端传输数 据, 从而获得空分复用的增益。
以下进一步说明, 基站在完成对为终端传输数据的波束的确定之后, 如 以及如何在第二时频资源上, 利用宽波束为不同于所述至少两个终端的其他 终端传输数据。
基站可以釆用宽波束发送小区专用参考信号 (Cell-specific reference signals, CRS ); 以及根据预先针对该基站发射的各窄波束所分别设置的信道 状态信息参考信号 ( Channel State Indication Reference Signals, CSI-RS ), 釆 用该基站发射的各窄波束分别发送信道状态信息参考信号 CSI-RS; 其中, 不 同窄波束被设置的 CSI-RS 互不相同。 具体的, 基站通过宽波束发送的 CRS 及各窄波束发送的 CSI-RS将在实施例一中进一步解释。
基站后续可以基于终端对其接收到的参考信号反馈的信道状态报告, 选 取用于为终端传输数据的时频资源。 具体地, 基站在第一时频资源上, 利用 确定出的窄波束为所述至少两个终端传输数据的具体实现过程可以包括: 子步骤一: 基站对于所述至少两个终端的每个终端执行: 将为为该终端 传输数据的窄波束被配置的 CSI-RS的资源配置索引通知该终端; 并获得该终 端对该 CSI-RS进行测量而反馈的相应的信道状态报告; 其中, 不同窄波束被 配置的 CSI-RS互不相同, 不同的 CSI-RS的资源配置索引也互不相同;
对于该终端而言, 其根据基站通知的、 为该终端传输数据的窄波束被配 置的 CSI-RS的资源配置索引, 可以对与该索引相匹配的 CSI-RS进行测量而 得到相应的信道状态报告并反馈给基站; 子步骤二: 基站根据所述至少两个终端分别向基站反馈的信道状态报告, 确定第一时频资源;
一般来说, 终端会向基站反馈全频带上每一个子带的的信道状态。 这样, 基站就可以选取信道状态较好, 即信道质量较高的信道的资源块作为后续用 于为终端传输数据的资源块。 基站所选取的资源块即此处所说的第一时频资 源。 本发明实施例中, 由于基站根据终端反馈的信道状态报告确定后续用于 传输数据的时频资源的方式可以按照按现有技术中的类似方式, 因此此处不 再赘述。
子步骤三: 基站在第一时频资源上, 利用确定出的窄波束为所述至少两 个终端传输数据。
类似地, 基站在第二时频资源上, 利用宽波束为不同于所述至少两个终 端传输数据的具体实现过程可以包括下述子步骤:
子步骤一: 基站获得所述其他终端通过对其接收到的所述 CRS的测量而 向所述基站反馈的信道状态报告;
子步骤二: 基站根据该信道状态报告确定第二时频资源;
其中, 基站根据该信道状态报告确定第二时频资源与前文描述的基站根 据信道状态 告确定第一时频资源的方式类似, 因此不再赘述。
子步骤三: 基站在第二时频资源上, 利用宽波束为所述其他终端传输数 据。
本发明实施例提供的上述方案通过基站同时发射覆盖范围不小于预先设 置的基站的一个扇区的覆盖范围的宽波束, 以及覆盖范围完全处于该宽波束 的覆盖范围内的窄波束, 实现在利用宽波束使得基站的扇区的覆盖范围不发 生变化的前提下, 进一步通过窄波束来达到对扇区的增强覆盖以及提高*** 容量的目的。 该方案由于仍然会维持基站发射的宽波束对扇区的覆盖范围不 发生变化, 因此不会影响扇区之间的覆盖关系。 并且, 该方案不需要额外的 站址回传资源, 也不需要额外的标准化支持。
以下以多个实施例为例, 详细说明本发明实施例提供的方案在实际中的 应用。
实施例 1
在实施例 1 中, 基站在发射上述宽波束的同时还发射窄波束的情况下, 以终端为诸如手机等用户设备 ( User Equipment , UE )为例, 为了避免窄波束 对现有技术中原有的 UE附着过程的影响,可以让基站仍然利用宽波束,在该 宽波束的所有子帧上全频带发送 CRS。 比如, 4艮设基站在发射一个宽波束的 同时还发射三个窄波束, 且用于发射宽波束的天线有两个端口, 用于发射单 个窄波束的天线也是两个端口, 则该基站所发射的宽波束和窄波束可以形成 如图 3所示的覆盖范围。 其中, 图 3中各种线条的含义请参见前文对图 2中 各种线条的含义的解释, 在此不再赘述。
基于如图 3 所示的假设条件, 基站可以在宽波束的全频带上所有的资源 块( Resource Block, RB )上发送 CRS。
具体地, 图 4a和图 4b中展示了在上述假设条件下, 在一个 RB粒度上, 基站利用宽波束分别在天线端口 Port 0和天线端口 Port 1上发送的 CRS所占 用的 RE的图样。 该图样中, R0和 R1分别为在天线端口 Port 0和天线端口 Port 1上用于映射 CRS的 RE, /表示单个时隙所包含的 OFDM符号的编号, 填充有格状阴影的 RE为不能在该天线端口(即上述的天线端口 Port O和天线 端口 Port 1 )上进行数据传输 ( Not used for transmission on this antenna port ) 的 RE。 此外, 图 4a和图 4b中还标示出了发送 PDSCH的候选 RE ( Candidate RE for PDSCH ), 即没有填充任何颜色的 RE。
由于在实施例 1 中, 仅由宽波束来发送 CRS, 因此可以保证在基站发射 该宽波束和窄波束的情况下, 基站发射的窄波束不会影响该宽波束所覆盖的 扇区与邻区间的覆盖关系。 此外, 所有基于 CRS解调的信道, 例如 PDCCH、 物理广播信道( PBCH, Physical Broadcast Channel )等, 也可以都由宽波束来 进行发送。
针对窄波束而言, 由于在利用窄波束为 UE传输数据之前, 可以基于将要 为 UE传输数据的窄波束天线到 UE的信道的情况, 来正确调度为该 UE调度 时频资源,因此, UE可以向基站正确反馈为其传输数据的窄波束的信道情况。 为了使得将要利用窄波束进行数据传输的 UE 能正确地反馈窄波束的信 道情况, 实施例 1中, 各窄波束可以发送不同的 CSI-RS, 此外, 窄波束可以 发送与宽波束所发送的 CRS相同的 CRS; 或者, 窄波束也可以不发送 CRS。 需要说明的是, 无论窄波束是否发送 CRS, 为了达到避免不同波束上发送的 控制信道的干扰, 及用户在不同波束间移动而可能产生的切换, 实施例 1 中 的宽、 窄波束均使用相同的 PCI。
实施例 1 中, 可以釆用窄波束发送 CSI-RS不而发送 CRS信号。 其中, CSI-RS是 LTE的 Rel-9版本中定义的一种下行导频信号, 其最小发送周期为 5ms, 所占用的 RE位置可以有 20种配置。 若假设的基站同时发送 4个窄波 束, 且每个窄波束均在两个天线端口上进行发射, 则可以让 4个窄波束分别 发送 4种不同的 CSI-RS。按照 LTE-Advanced R10版本中对于 RE的配置方式 的规定可知, 在一个 RB粒度上, 这 4种不同的 CSI-RS所占用的 RE的图样 如图 5a〜图 5d所示。 该图样中: 填充有黑色阴影的两个 RE分别为用于发送 CSI-RS的两个天线端口所分别发送的 CSI-RS占用的 RE; 填充有格状阴影的 RE 为不能在该天线端口上进行数据传输(Not used for transmission on this antenna port )的 RE。此外,图 5a〜图 5d中还标示出了发送 PDSCH的候选 RE, 即没有填充任何颜色的 RE , 以及标示出了偶数时隙 ( Even slot )和奇数时隙 ( Odd slot ), 由于该些信息不需要对于现有技术进行改进, 因此不再赘述。 实施例 1中, 针对任意窄波束而言, 基站可以将该窄波束的 CSI-RS导频配置 (如 CSI-RS的资源配置索引)通知给将要利用该窄波束进行数据传输的 UE, 从而指示相应的 UE 在接收到与为为其传输数据的该窄波束所配置的该 CSI-RS资源配置索引相匹配的 CSI-RS时, 对该 CSI-RS进行测量, 并上报信 道状态报告。 从而基站在接收到该信道状态报告后, 就可以确定发射该窄波 束的天线到 UE的信道的质量, 并才艮据确定出的信道的质量,确定利用该窄波 束发送下行数据时所需的适当的时频资源。
类似地, 针对宽波束而言, 基站通过利用宽波束, 可以向将要利用宽波 束进行数据传输的 UE发送 CRS。 进一步地, 基站在接收到将要利用宽波束 进行数据传输的 UE对该 CRS进行测量而反馈的信道状态报告后, 就可以确 定发射该宽波束的天线到 UE的信道的质量, 并根据确定出的信道的质量,确 定利用该宽波束发送下行数据时所需的适当的时频资源。
具体地, 基站选择利用不同的波束所传输的下行数据所占用的时频资源 的具体实现方式请见后文的实施例 3。
需要说明的是, 如果有多个窄波束为同一 UE传输数据, 则该 UE可能被 配置相应的多个 CSI-RS资源配置索引, 这样, UE可以基于这多个 CSI-RS进 行信道状态报告。具体地,如何确定由多个窄波束为同一 UE传输数据的实施 方式请见下述实施例 2。
实施例 2
由于按照本发明实施例提供的通信方法, 基站同时会发射宽波束和至少 两个窄波束, 因此, 在为某个特定的 UE传输数据和指示 CSI-RS配置索引之 前, 可以先为该特定的 UE选择适当的一个或多个服务波束。
由于路损的互易性,为 UE选择服务波束时,可以基于上行信号进行选择, 也可以基于下行信号进行选择。 实施例 2 中, 假设基站基于发射宽波束的天 线及发射各窄波束的天线所接收到的 SRS的信号强度值,为 UE选择为该 UE 传输数据的波束。
在 LTE***中, UE可以根据基站配置, 周期性的发送 SRS , 以便于基站 确定 UE 到基站的上行信道。 不同 UE 所发送的 SRS 信号可以通过 TDM/FDM/CDM进行区分。
实施例 2中, 每次收到任意 UE发送的 SRS信号, 基站中用于发射不同 波束的天线都会记录下其接收到的由该 UE所发送的 SRS的信号强度值, 从 而基站基于各天线多次记录的由该 UE所发送的 SRS的信号强度值, 可以分 别计算各天线记录的由该 UE所发送的 SRS的信号强度值的平均值。
然后, 可选的, 基站可以根据预先设置的信号强度值的修正值, 对计算 得到该 UE所发送的 SRS的信号强度值的各平均值进行修正。 例如针对发射 宽波束的天线而言, 可以根据预先针对该天线而设置的第一修正值, 对该天 线所对应的 SRS的信号强度值的平均值进行修正。 具体的修正方法可以为: 在该天线所对应的 SRS的信号强度值的平均值的基础上, 减去第一修正值, 从而相当于将该天线所对应的 SRS的信号强度值的平均值变小。
实施例 2中, 对于发射不同波束的天线可以配置不同的修正值。 具体地, 可以以基站所发射的波束的数量、 波束的发射功率和 /或针对不同波束而预计 的其可以服务的 UE的数量等, 作为配置上述修正值的依据。 比如, 若针对宽 波束而预计的其可以服务的 UE的数量大于任意窄波束所服务的 UE的数量, 且宽波束的发射功率值大于任意窄波束的发射功率值, 则可以针对发射宽波 束的天线配置较小的修正值, 而针对发射窄波束的天线配置较大的修正值, 从而使得宽波束被选取作为为 UE传输数据的服务波束的几率相对较大。
又比如, 若基站所发射的窄波束数量大于一个规定的数量阔值, 那么, 可以针对发射宽波束的天线配置较大的修正值, 而针对发射窄波束的天线配 置较小的修正值,从而使得窄波束被选取作为为 UE传输数据的服务波束的几 率相对较大。
又比如, 若基站所发射的某个窄波束的发射功率大于其他窄波束的发射 功率, 那么, 可以针对发射该窄波束的天线配置较小的修正值, 而针对发射 其它窄波束的天线配置较大的修正值,从而使得该窄波束被选取作为 UE的服 务波束的几率相对其它窄波束较大。
实施例 2中, 当完成对发射不同波束的天线所接收到的该 UE的 SRS的 信号强度值的平均值的修正后, 基于修正后的信号强度值, 就可以实现根据 一定准则, 为发送该 SRS的 UE选择为其传输数据的服务波束。 例如, 可以 仅选择修正后的信号强度值中的最大值所对应的天线发射的波束作为为该 UE传输数据的波束。 可选的, 如果修正后的信号强度值中的最大和次大值所 对应的天线分别发射的波束均为窄波束, 且该最大值与次大值之间的差值小 于规定的差量阔值, 则可以选择该最大值与次大值所分别对应的天线所发射 的窄波束作为该 UE传输数据的波束。 实施例 3
在实际应用中, 由于任意窄波束的覆盖范围完全在宽波束的覆盖范围之 两者之间会产生严重干扰。 从而实施例 3提出一种相应的资源分配机制, 以 避免两者之间强干扰的产生。
实施例 3中, 提供了一种资源分配机制, 该机制主要包括:
1、 宽波束所传输的下行数据所占用的时频资源上, 窄波束不进行下行数 据的传输; 而窄波束所传输的下行数据所占用的时频资源上, 宽波束不进行 下行数据的传输。 即宽波束和窄波束分别传输的下行数据所占用的时频资源 相互错开。
2、 可以通过时分复用 (TDM )或者频分复用 (FDM )的方式, 使得宽波 束和窄波束分别传输的下行数据所占用的时频资源相互错开。
3、 窄波束之间釆用空分复用的方式进行下行数据传输, 不同的窄波束可 以釆用相同的时频资源为各自服务的 UE进行数据传输。
按照上述机制, 假设基站发射的宽波束 BeamO为 UE0传输数据, 同时, 该基站发射的窄波束 Beaml为 UE1传输数据、 窄波束 Beam2为 UE2传输数 据。 那么, 当釆用 FDM的方式使得宽波束和窄波束分别传输的下行数据所占 用的时频资源相互错开时, 一方面, 可以在同一个子帧中的若干个资源块 RB ( Resource Block )上, 仅由宽波束为 UE0传输下行数据, 而在这些 RB上, 所有的窄波束都不进行下行数据的传输; 另一方面, 在该子帧中的不同于上 述若干个 RB的其他若干 RB上, 则仅由窄波束进行下行数据的传输, 即由窄 波束 Beaml和窄波束 Beam2分别为 UE1和 UE2传输数据, 而宽波束 BeamO 在这些 RB上不进行下行数据传输。
需要说明的是,利用宽波束传输的下行数据所占用的 RB可以是根据 UE0 对宽波束发送的 CRS进行测量后反馈的信道状态 告来确定的; 类似地, 利 用窄波束 Beaml 传输的下行数据所占用的 RB 可以是根据 UE1 对窄波束 Beaml发送的第一 CSI-RS进行测量后反馈的信道状态报告来确定的; 而利用 窄波束 Beam2传输的下行数据所占用的 RB可以是根据 UE2对窄波束 Beam2 发送的第二 CSI-RS进行测量后反馈的信道状态报告来确定的。
实施例 3 中, 宽、 窄波束上传输的下行数据可以统一由集中式的基带系 统进行调制与发射。 并且, 宽波束和窄波束分别传输的下行数据所占用的时 频资源相互错开的方式可以动态调整。 具体而言, 无论是釆用 TDM的方式还 是 FDM 的方式来错开宽波束和窄波束分别传输的下行数据所占用的时频资 源, 宽波束和窄波束分别传输的下行数据所占用的 RB都可以动态调整。
实施例 4
实施例 4主要是针对为同一 UE传输数据的窄波束有多个的情况,提出了 如何使得为该 UE传输数据的多个窄波束协作传输,从而降低该些窄波束之间 的相互干扰。
具体地, 为该 UE传输数据的各窄波束可以在相同的 RB上, 为该 UE发 送相同的下行数据。
或者, 也可以根据该 UE对其接收到的 CSI-RS进行测量而得到的信道状 态报告, 从为该 UE传输数据的所有窄波束中, 选取到该 UE的下行信道质量 最好的天线所发射的窄波束, 为该 UE进行下行数据的传输。 而为该 UE传输 数据的窄波束中未被选取到的其他窄波束则可以不再在用于发送该下行数据 的 RB上进行任何下行数据的传输。
通过本发明实施例提供的方案在实际中的上述 4种具体实施方式可知, 釆用本发明实施例提供的方案, 可以在不对基站的已有天线进行任何调整的 基础上, 实现釆用窄波束与宽波束共同覆盖扇区, 从而可以在不影响扇区之 间的覆盖关系的前提下提升***容量, 且还不需要额外的标准化过程, 也不 需要对 UE进行升级。
出于与本发明实施例提供的通信方法相同的发明构思, 本发明实施例还 提供一种通信装置。 该通信装置可以发射宽波束和至少两个窄波束。 具体地, 该装置的结构示意图如图 6所示, 主要包括: 数据传输模块 62, 用于在相同的时频资源上, 利用窄波束确定模块 61确 定出的窄波束为所述至少两个终端传输数据。
其中, 宽波束覆盖通信装置的一个扇区, 窄波束的覆盖区域完全处于所 述宽波束的覆盖范围之内, 且宽波束和窄波束具备相同的 PCI。
可选的, 为了实现利用宽波束为终端服务, 该通信装置还可以包括: 宽波束确定模块, 用于确定宽波束为不同于所述至少两个终端的其他终 端传输数据;
数据传输模块 62还用于利用该宽波束为所述其他终端传输数据。
可选的, 数据传输模块 62具体可以用于在第一时频资源上, 利用确定出 的窄波束为所述至少两个终端传输数据。
可选的, 数据传输模块 62具体可以用于在不同于第一时频资源的第二时 频资源上, 利用该宽波束为所述其他终端传输数据。
为了保证确定出的为所述其他终端中的每个终端传输数据的宽波束所发 送的信道的信道质量, 可选的, 宽波束确定模块具体可以划分为以下子模块: 信号接收子模块, 用于通过发射宽波束和窄波束的天线, 分别接收所述 其他终端中的每个终端发送的第一信道探测参考信号 SRS;
信道质量确定子模块, 用于根据发射宽波束和窄波束的天线分别接收到 的由所述其他终端中的每个终端发送的第一 SRS的信号强度值, 确定从发射 宽波束和窄波束的天线分别到所述其他终端中的每个终端的信道的信道质 量;
宽波束确定子模块, 用于在比较出相比于从发射窄波束的天线到所述其 他终端中的每个终端的信道的信道质量, 从发射宽波束的天线到所述其他终 端中的每个终端的信道的信道质量最好时, 确定宽波束为所述其他终端中的 每个终端传输数据。
为了准确确定从发射宽波束和窄波束的天线分别到所述其他终端中的每 个终端的信道的信道质量, 可选的, 信道质量确定子模块具体可以用于: 根 据预先针对发射宽波束和窄波束的天线所分别设置的信号强度值修正值, 对 发射宽波束和窄波束的天线分别接收到的由所述其他终端中的每个终端发送 的第一 SRS的信号强度值进行修正, 得到各个修正后的第一 SRS的信号强度 值;
根据各个修正后的第一 SRS的信号强度值, 确定从发射宽波束和窄波束 的天线分别到所述其他终端中的每个终端的信道的信道质量。
可选的, 为了保证确定出的为所述至少两个终端中的每个终端传输数据 的窄波束所发送的信道的信道质量, 窄波束确定模块 61具体可以包括:
信号接收子模块, 用于通过发射宽波束和窄波束的天线, 分别接收所述 至少两个终端中的每个终端发送的第二 SRS;
信道质量确定子模块, 用于根据发射宽波束和窄波束的天线分别接收到 的由所述至少两个终端中的每个终端发送的第二 SRS的信号强度值, 确定从 发射宽波束和窄波束的天线分别到所述至少两个终端中的每个终端的信道的 信道质量;
窄波束确定子模块, 用于在比较出相比于从发射宽波束的天线到所述至 少两个终端中的每个终端的信道的信道质量, 从发射窄波束的天线到所述至 少两个终端中的每个终端的信道的信道质量最好时, 确定窄波束为所述至少 两个终端中的每个终端传输数据。
为了准确确定从发射宽波束和窄波束的天线分别到所述至少两个终端中 的每个终端的信道的信道质量, 可选的, 信道质量确定子模块具体可以用于: 根据预先针对发射宽波束和窄波束的天线所分别设置的信号强度值修正 值, 对发射宽波束和窄波束的天线分别接收到的由所述至少两个终端中的每 个终端发送的第二 SRS的信号强度值进行修正, 得到各个修正后的第二 SRS 的信号强度值;
根据各个修正后的第二 SRS的信号强度值, 确定从发射宽波束和窄波束 的天线分别到所述至少两个终端中的每个终端的信道的信道质量。
可选的, 窄波束确定子模块具体可以用于:
在比较出相比于从发射宽波束的天线到所述至少两个终端中的每个终端 的信道的信道质量, 从发射窄波束的天线到所述至少两个终端中的每个终端 的信道的信道质量最好时, 从发射窄波束的天线到所述至少两个终端中的每 个终端的信道中, 选取信道质量最好的信道; 并确定发送选取的信道的窄波 束为所述至少两个终端中的每个终端传输数据。
为了触发终端进行信道状态的测试和信道状态报告的反馈, 可选的, 该 通信装置还包括:
参考信号发送模块, 用于釆用宽波束发送小区专用参考信号 CRS; 并根 据预先针对该通信装置发射的各窄波束所分别设置的信道状态信息参考信号 CSI-RS , 釆用该通信装置发射的各窄波束分别发送信道状态信息参考信号 CSI-RS; 其中, 不同窄波束被设置的 CSI-RS互不相同。
可选的, 数据传输模块 62具体可以用于:
对于所述至少两个终端中的每个终端分别执行: 将为为该终端传输数据 的窄波束被配置的 CSI-RS 的资源配置索引通知该终端; 并获得该终端对 CSI-RS进行测量而反馈的相应的信道状态报告;
根据所述至少两个终端分别向该通信装置反馈的信道状态报告, 确定第 一时频资源;
在第一时频资源上, 利用确定出的窄波束为所述至少两个终端传输数据。 可选的, 数据传输模块 62具体可以用于:
获得所述其他终端通过对其接收到的 CRS的测量而向该通信装置反馈的 信道状态报告;
根据信道状态报告, 确定第二时频资源;
在第二时频资源上, 利用确定出的宽波束为所述其他终端传输数据。 可以理解的是, 本发明实施例中的各个模块的实现以及交互方式可以进 一步参考方法实施例中的相关描述。
发明实施例提供的上述通信装置可以同时发射覆盖通信装置的一个扇区 的宽波束, 以及覆盖范围完全处于该宽波束的覆盖范围内的窄波束, 从而实 现在利用宽波束使得通信装置的扇区的覆盖范围不发生变化的前提下, 进一 步通过窄波束来达到对扇区的增强覆盖从而提高频谱效率。 该方案由于仍然 会维持通信装置发射的宽波束对扇区的覆盖范围不发生变化, 因此不会影响 扇区之间的覆盖关系。 并且, 该方案不需要额外的站址回传资源, 也不需要 额外的标准化支持。
出于与本发明实施例提供的通信方法相同的发明构思, 本发明实施例还 提供另一种通信装置。 该通信装置可以发射宽波束和至少两个窄波束。 具体 地, 该装置的结构示意图如图 7所示, 主要包括: 收发器 72, 用于在相同的时频资源上, 利用处理器 71确定出的窄波束为 所述至少两个终端传输数据;
其中, 宽波束覆盖通信装置的一个扇区, 窄波束的覆盖区域完全处于所 述宽波束的覆盖范围之内, 且宽波束和窄波束具备相同的 PCI。
可选的, 处理器 71还可以用于确定宽波束为不同于所述至少两个终端的 其他终端传输数据。 则收发器 72还可以用于利用该宽波束为所述其他终端传 输数据。
可选的, 收发器 72具体可以用于在第一时频资源上, 利用确定出的窄波 束为所述至少两个终端传输数据。
可选的, 收发器 72具体可以用于在不同于第一时频资源的第二时频资源 上, 利用宽波束为所述其他终端传输数据。
可选的, 处理器 71具体可以用于: 根据收发器 72通过发射宽波束和窄 波束的天线分别接收的所述其他终端中的每个终端发送的第一信道探测参考 信号 SRS , 确定从发射宽波束和窄波束的天线分别到所述其他终端中的每个 终端的信道的信道质量; 并在比较出相比于从发射窄波束的天线到所述其他 终端中的每个终端的信道的信道质量, 从发射宽波束的天线到所述其他终端 中的每个终端的信道的信道质量最好时, 确定宽波束为所述其他终端中的每 个终端传输数据。
可选的, 处理器 71具体可以用于: 根据预先针对发射宽波束和窄波束的 天线所分别设置的信号强度值修正值, 对发射宽波束和窄波束的天线分别接 收到的由所述其他终端中的每个终端发送的第一 SRS 的信号强度值进行修 正, 得到各个修正后的第一 SRS的信号强度值; 根据各个修正后的第一 SRS 的信号强度值, 确定从发射宽波束和窄波束的天线分别到所述其他终端中的 每个终端的信道的信道质量。
可选的, 处理器 71具体可以用于: 根据收发器 72通过发射宽波束和窄 波束的天线分别接收到的由所述至少两个终端中的每个终端发送的第二 SRS 的信号强度值, 确定从发射宽波束和窄波束的天线分别到所述至少两个终端 中的每个终端的信道的信道质量; 在比较出相比于从发射宽波束的天线到所 述至少两个终端中的每个终端的信道的信道质量, 从发射窄波束的天线到所 述至少两个终端中的每个终端的信道的信道质量最好时, 确定窄波束为所述 至少两个终端中的每个终端传输数据。
可选的, 处理器 71具体可以用于: 根据预先针对发射宽波束和窄波束的 天线所分别设置的信号强度值修正值, 对发射宽波束和窄波束的天线分别接 收到的由所述至少两个终端中的每个终端发送的第二 SRS的信号强度值进行 修正,得到各个修正后的第二 SRS的信号强度值;根据各个修正后的第二 SRS 的信号强度值, 确定从发射宽波束和窄波束的天线分别到所述至少两个终端 中的每个终端的信道的信道质量。
可选的, 处理器 71具体可以用于: 从发射窄波束的天线到所述至少两个 终端中的每个终端的信道中, 选取信道质量最好的信道; 并确定发送选取的 信道的窄波束为所述至少两个终端中的每个终端传输数据。
可选的,收发器 72还可以用于:釆用宽波束发送小区专用参考信号 CRS; 并根据预先针对该通信装置发射的各窄波束所分别设置的信道状态信息参考 信号 CSI-RS, 釆用该通信装置发射的各窄波束分别发送信道状态信息参考信 号 CSI-RS; 其中, 不同窄波束被设置的 CSI-RS互不相同。
可选的, 收发器 72具体可以用于: 对于所述至少两个终端中的每个终端 分别执行: 将为为该终端传输数据的窄波束被配置的 CSI-RS的资源配置索引 通知该终端;并获得该终端对 CSI-RS进行测量而反馈的相应的信道状态报告; 并在所述至少两个终端分别向该通信装置反馈信道状态报告后, 在第一时频 频资源可以是由处理器 71根据上述信道状态报告而确定的。
可选的, 收发器 72具体可以用于: 获得所述其他终端通过对其接收到的 CRS的测量而向该通信装置反馈的信道状态 4艮告;并在所述其他终端分别向该 通信装置反馈信道状态报告后, 在第二时频资源上, 利用确定出的宽波束为 所述其他终端传输数据。 其中, 第二时频资源可以是由处理器 71根据所述其 他终端通过对其接收到的 CRS的测量而向该通信装置反馈的信道状态报告而 确定的。
本领域内的技术人员应明白, 本申请的实施例可提供为方法、 ***、 或 计算机程序产品。 因此, 本申请可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实施例的形式。 而且, 本申请可釆用在一个或多个 其中包含有计算机可用程序代码的计算机可用存储介质 (包括但不限于磁盘 存储器、 CD-ROM、 光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、 设备(***)、 和计算机程序产 品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图 和 /或方框图中的每一流程和 /或方框、 以及流程图和 /或方框图中的流程 和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器, 使得通 过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流 程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设 备以特定方式工作的计算机可读存储器中, 使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品, 该指令装置实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中指定的功能。 这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理, 从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图 一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步 骤。
尽管已描述了本申请的优选实施例, 但本领域内的技术人员一旦得知了 基本创造性概念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权 利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然, 本领域的技术人员可以对本申请实施例进行各种改动和变型而不 脱离本申请实施例的精神和范围。 这样, 倘若本申请实施例的这些修改和变 型属于本申请权利要求及其等同技术的范围之内, 则本申请也意图包含这些 改动和变型在内。

Claims

权 利 要 求
1、 一种通信方法, 其特征在于, 包括: 射宽波束和至少两个窄波束;
所述基站在相同的时频资源上, 利用确定出的窄波束为所述至少两个终 端传输数据;
其中, 所述宽波束覆盖所述基站的一个扇区, 所述窄波束的覆盖区域完 全处于所述宽波束的覆盖范围之内, 且所述宽波束和所述窄波束具备相同的 物理小区标识 PCI。
2、 如权利要求 1所述的方法, 其特征在于, 所述方法还包括: 据;
所述基站利用所述宽波束为所述其他终端传输数据。
3、 如权利要求 2所述的方法, 其特征在于, 所述基站在相同的时频资源 上, 利用确定出的窄波束为所述至少两个终端传输数据, 包括:
所述基站在第一时频资源上, 利用确定出的窄波束为所述至少两个终端 传输数据。
4、 如权利要求 3所述的方法, 所述基站利用所述宽波束为所述其他终端 传输数据, 包括:
所述基站在不同于所述第一时频资源的第二时频资源上, 利用所述宽波 束为所述其他终端传输数据。
5、 如权利要求 2~4任一所述的方法, 其特征在于, 所述基站确定所述宽 波束为所述其他终端传输数据, 包括:
所述基站通过发射所述宽波束和所述窄波束的天线, 分别接收所述其他 终端中的每个终端发送的第一信道探测参考信号 SRS;
根据发射所述宽波束和所述窄波束的天线分别接收到的由所述其他终端 中的每个终端发送的所述第一 SRS的信号强度值, 确定从发射所述宽波束和 所述窄波束的天线分别到所述其他终端中的每个终端的信道的信道质量; 在比较出相比于从发射所述窄波束的天线到所述其他终端中的每个终端 的信道的信道质量, 从发射所述宽波束的天线到所述其他终端中的每个终端 的信道的信道质量最好时, 确定所述宽波束为所述其他终端中的每个终端传 输数据。
6、 如权利要求 5所述的方法, 其特征在于, 所述基站根据发射所述宽波 束和所述窄波束的天线分别接收到的由所述其他终端中的每个终端发送的所 述第一 SRS的信号强度值, 确定从发射所述宽波束和所述窄波束的天线分别 到所述其他终端中的每个终端的信道的信道质量, 包括:
所述基站根据预先针对发射所述宽波束和所述窄波束的天线所分别设置 的信号强度值修正值, 对发射所述宽波束和所述窄波束的天线分别接收到的 由所述其他终端中的每个终端发送的所述第一 SRS的信号强度值进行修正, 得到各个修正后的所述第一 SRS的信号强度值;
根据所述各个修正后的所述第一 SRS的信号强度值, 确定从发射所述宽 波束和所述窄波束的天线分别到所述其他终端中的每个终端的信道的信道质 量。
7、 如权利要求 2~6任一所述的方法, 其特征在于, 所述基站确定至少两 个窄波束为至少两个终端传输数据, 包括:
所述基站通过发射所述宽波束和所述窄波束的天线, 分别接收所述至少 两个终端中的每个终端发送的第二 SRS;
根据发射所述宽波束和所述窄波束的天线分别接收到的由所述至少两个 终端中的每个终端发送的所述第二 SRS的信号强度值, 确定从发射所述宽波 束和所述窄波束的天线分别到所述至少两个终端中的每个终端的信道的信道 质量;
在比较出相比于从发射所述宽波束的天线到所述至少两个终端中的每个 终端的信道的信道质量, 从发射所述窄波束的天线到所述至少两个终端中的 每个终端的信道的信道质量最好时, 确定所述窄波束为所述至少两个终端中 的每个终端传输数据。
8、 如权利要求 7所述的方法, 其特征在于, 所述基站根据发射所述宽波 束和所述窄波束的天线分别接收到的由所述至少两个终端中的每个终端发送 的所述第二 SRS的信号强度值, 确定从发射所述宽波束和所述窄波束的天线 分别到所述至少两个终端中的每个终端的信道的信道质量, 包括:
所述基站根据预先针对发射所述宽波束和所述窄波束的天线所分别设置 的信号强度值修正值, 对发射所述宽波束和所述窄波束的天线分别接收到的 由所述至少两个终端中的每个终端发送的所述第二 SRS的信号强度值进行修 正, 得到各个修正后的所述第二 SRS的信号强度值;
根据所述各个修正后的所述第二 SRS的信号强度值, 确定从发射所述宽 波束和所述窄波束的天线分别到所述至少两个终端中的每个终端的信道的信 道质量。
9、 如权利要求 8所述的方法, 其特征在于, 在比较出相比于从发射所述 宽波束的天线到所述至少两个终端中的每个终端的信道的信道质量, 从发射 所述窄波束的天线到所述至少两个终端中的每个终端的信道的信道质量最好 时, 确定所述窄波束为所述至少两个终端中的每个终端传输数据, 包括: 所述基站从发射所述窄波束的天线到所述至少两个终端中的每个终端的 信道中, 选取信道质量最好的信道; 并确定发送选取的信道的窄波束为所述 至少两个终端中的每个终端传输数据。
10、 如权利要求 4所述的方法, 其特征在于, 所述方法还包括: 所述基站釆用所述宽波束发送小区专用参考信号 CRS; 以及
所述基站根据预先针对所述基站发射的各窄波束所分别设置的信道状态 信息参考信号 CSI-RS, 釆用该基站发射的各窄波束分别发送信道状态信息参 考信号 CSI-RS; 其中, 不同窄波束被设置的 CSI-RS互不相同。
11、 如权利要求 10所述的方法, 其特征在于, 所述基站在第一时频资源 上, 利用确定出的窄波束为所述至少两个终端传输数据, 包括: 所述基站对于所述至少两个终端中的每个终端分别执行: 将为为该终端 传输数据的窄波束被配置的 CSI-RS的资源配置索引通知该终端; 并获得该终 端对所述 CSI-RS进行测量而反馈的相应的信道状态报告;
根据所述至少两个终端分别向所述基站反馈的信道状态报告, 确定所述 第一时频资源;
在所述第一时频资源上, 利用确定出的窄波束为所述至少两个终端传输 数据。
12、 如权利要求 10所述的方法, 其特征在于, 所述基站在所述第二时频 资源上, 利用所述宽波束为所述其他终端传输数据, 包括:
所述基站获得所述其他终端通过对其接收到的所述 CRS的测量而向所述 基站反馈的信道状态报告;
根据所述信道状态报告, 确定所述第二时频资源;
在所述第二时频资源上, 利用确定出的宽波束为所述其他终端传输数据。
13、 一种通信装置, 其特征在于, 所述通信装置发射宽波束和至少两个 窄波束; 所述装置包括: 数据传输模块, 用于在相同的时频资源上, 利用窄波束确定模块确定出 的窄波束为所述至少两个终端传输数据;
其中, 所述宽波束覆盖所述通信装置的一个扇区, 所述窄波束的覆盖区 域完全处于所述宽波束的覆盖范围之内, 且所述宽波束和所述窄波束具备相 同的物理小区标识 PCI。
14、 如权利要求 1所述的装置, 其特征在于, 所述装置还包括: 宽波束确定模块, 用于确定所述宽波束为不同于所述至少两个终端的其 他终端传输数据;
所述数据传输模块还用于利用所述宽波束为所述其他终端传输数据。
15、 如权利要求 14所述的装置, 其特征在于, 所述数据传输模块具体用 于在第一时频资源上, 利用确定出的窄波束为所述至少两个终端传输数据。
16、 如权利要求 15所述的装置, 所述数据传输模块具体用于在不同于所 述第一时频资源的第二时频资源上, 利用所述宽波束为所述其他终端传输数 据。
17、 如权利要求 14~16任一所述的装置, 其特征在于, 所述宽波束确定 模块具体包括:
信号接收子模块, 用于通过发射所述宽波束和所述窄波束的天线, 分别 接收所述其他终端中的每个终端发送的第一信道探测参考信号 SRS;
信道质量确定子模块, 用于根据发射所述宽波束和所述窄波束的天线分 别接收到的由所述其他终端中的每个终端发送的所述第一 SRS 的信号强度 值, 确定从发射所述宽波束和所述窄波束的天线分别到所述其他终端中的每 个终端的信道的信道质量; 述其他终端中的每个终端的信道的信道质量, 从发射所述宽波束的天线到所 述其他终端中的每个终端的信道的信道质量最好时, 确定所述宽波束为所述 其他终端中的每个终端传输数据。
18、 如权利要求 17所述的装置, 其特征在于, 所述信道质量确定子模块 具体用于:
根据预先针对发射所述宽波束和所述窄波束的天线所分别设置的信号强 度值修正值, 对发射所述宽波束和所述窄波束的天线分别接收到的由所述其 他终端中的每个终端发送的所述第一 SRS的信号强度值进行修正, 得到各个 修正后的所述第一 SRS的信号强度值;
根据所述各个修正后的所述第一 SRS的信号强度值, 确定从发射所述宽 波束和所述窄波束的天线分别到所述其他终端中的每个终端的信道的信道质 量。
19、 如权利要求 14~18任一所述的装置, 其特征在于, 所述窄波束确定 模块具体包括:
信号接收子模块, 用于通过发射所述宽波束和所述窄波束的天线, 分别 接收所述至少两个终端中的每个终端发送的第二 SRS;
信道质量确定子模块, 用于根据发射所述宽波束和所述窄波束的天线分 别接收到的由所述至少两个终端中的每个终端发送的所述第二 SRS的信号强 度值, 确定从发射所述宽波束和所述窄波束的天线分别到所述至少两个终端 中的每个终端的信道的信道质量;
窄波束确定子模块, 用于在比较出相比于从发射所述宽波束的天线到所 述至少两个终端中的每个终端的信道的信道质量, 从发射所述窄波束的天线 到所述至少两个终端中的每个终端的信道的信道质量最好时, 确定所述窄波 束为所述至少两个终端中的每个终端传输数据。
20、 如权利要求 19所述的装置, 其特征在于, 所述信道质量确定子模块 具体用于:
根据预先针对发射所述宽波束和所述窄波束的天线所分别设置的信号强 度值修正值, 对发射所述宽波束和所述窄波束的天线分别接收到的由所述至 少两个终端中的每个终端发送的所述第二 SRS的信号强度值进行修正, 得到 各个修正后的所述第二 SRS的信号强度值;
根据所述各个修正后的所述第二 SRS的信号强度值, 确定从发射所述宽 波束和所述窄波束的天线分别到所述至少两个终端中的每个终端的信道的信 道质量。
21、 如权利要求 20所述的装置, 其特征在于, 所述窄波束确定子模块具 体用于:
在比较出相比于从发射所述宽波束的天线到所述至少两个终端中的每个 终端的信道的信道质量, 从发射所述窄波束的天线到所述至少两个终端中的 每个终端的信道的信道质量最好时, 从发射所述窄波束的天线到所述至少两 个终端中的每个终端的信道中, 选取信道质量最好的信道; 并确定发送选取 的信道的窄波束为所述至少两个终端中的每个终端传输数据。
22、 如权利要求 16所述的装置, 其特征在于, 所述装置还包括: 参考信号发送模块, 用于釆用所述宽波束发送小区专用参考信号 CRS; 并根据预先针对发射的各窄波束所分别设置的信道状态信息参考信号
CSI-RS, 釆用所述各窄波束分别发送信道状态信息参考信号 CSI-RS; 其中, 不同窄波束被设置的 CSI-RS互不相同。
23、 如权利要求 22所述的装置, 其特征在于, 所述数据传输模块具体用 于:
对于所述至少两个终端中的每个终端分别执行: 将为为该终端传输数据 的窄波束被配置的 CSI-RS的资源配置索引通知该终端; 并获得该终端对所述 CSI-RS进行测量而反馈的相应的信道状态报告;
根据所述至少两个终端分别向所述装置反馈的信道状态报告, 确定所述 第一时频资源;
在所述第一时频资源上, 利用确定出的窄波束为所述至少两个终端传输 数据。
24、 如权利要求 22所述的装置, 其特征在于, 所述数据传输模块具体用 于:
获得所述其他终端通过对其接收到的所述 CRS的测量而反馈的信道状态 报告;
根据所述信道状态报告, 确定所述第二时频资源;
在所述第二时频资源上, 利用确定出的宽波束为所述其他终端传输数据。
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