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WO2016015579A1 - Mimo系统中的导频发送方法、测量方法及装置 - Google Patents

Mimo系统中的导频发送方法、测量方法及装置 Download PDF

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Publication number
WO2016015579A1
WO2016015579A1 PCT/CN2015/084753 CN2015084753W WO2016015579A1 WO 2016015579 A1 WO2016015579 A1 WO 2016015579A1 CN 2015084753 W CN2015084753 W CN 2015084753W WO 2016015579 A1 WO2016015579 A1 WO 2016015579A1
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WIPO (PCT)
Prior art keywords
pilot
reference signal
measurement
port
beamforming
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PCT/CN2015/084753
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English (en)
French (fr)
Inventor
陈润华
高秋彬
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0426—Power distribution
    • H04B7/043—Power distribution using best eigenmode, e.g. beam forming or beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present disclosure relates to the field of wireless communication technologies, and in particular, to a pilot transmission method, a measurement method, and an apparatus in a multiple input multiple output system.
  • base station antenna arrays are generally horizontally aligned. Each antenna actually includes a set of antenna elements, each set of antenna elements is jointly controlled by one radio frequency unit, and different sets of antenna elements are controlled by different radio frequency units.
  • the base station transmitter beam can only be adjusted in the horizontal direction, while the vertical direction is a fixed downtilt angle. Therefore, various beamforming/precoding techniques are performed based on the horizontal channel information. In fact, since the wireless signal is three-dimensionally propagated in space, the method of fixing the downtilt angle does not optimize the performance of the system. Vertical beam adjustment is very important for reducing inter-cell interference and improving system performance.
  • the antenna array will be enhanced from the current two-dimensional horizontal arrangement to three-dimensional horizontal and vertical alignment, that is, three-dimensional (3D) multiple-input multiple-output (MIMO) antenna technology.
  • 3D three-dimensional multiple-input multiple-output
  • This way of the antenna array makes it possible to dynamically adjust the beam in the vertical direction. Since each antenna element can be individually controlled, this antenna technique is also referred to as Full-Dimension (FD) MIMO.
  • FD Full-Dimension
  • the channel state information (CSI) reported by the user equipment User Equipment, UE
  • the existing scheme actually combines the feedback of the vertical beamforming vector with the channel feedback of the horizontal dimension.
  • the main technical issues that exist in the program include:
  • the overhead of the pilot resource that the eNB needs to configure is large
  • the UE In order for the eNB to obtain the best vertical beamforming vector information, the UE needs to feed back all the measurement results measured each time, resulting in a large uplink feedback overhead.
  • the purpose of the present disclosure is to provide a pilot transmission method, a pilot measurement method, and a device in a MIMO system to solve the problem of large CSI-RS resource overhead.
  • a pilot transmission method in a MIMO system comprising:
  • a beamformed pilot signal is transmitted on the at least one P port first pilot resource.
  • the existing solution is to combine the feedback of the beamforming vector of the vertical dimension with the channel feedback of the horizontal dimension. Therefore, the eNB needs to configure the pilot resources. The cost is large.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming vector of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only
  • beamforming is performed on different ports of the first pilot resource of the P port by using different beamforming matrices to implement feedback of the beamforming matrix, thereby implementing the beam (in the vertical direction or horizontally) Dynamic adjustment of the direction) greatly reduces the overhead of pilot resources compared to the prior art.
  • the eNB configures pilot resources of one P port to the UE, and the eNB uses different beamforming matrices for different ports to perform shaping.
  • the UE performs channel measurement on the configured P ports, selects n ports with the best measurement result, n is an integer greater than or equal to 1, and n can also be equal to P, and then notifies the eNB of the selected port information.
  • the eNB performs channel shaping according to the obtained n ports selected by the UE.
  • the channel measurement on the P ports may be reference symbol received power (RSRP), or reference symbol received quality (RSRQ), or may be a letter. Channel state information.
  • RSRP reference symbol received power
  • RSRQ reference symbol received quality
  • the UE complexity is reduced compared to measuring pilot resources of P multi-ports.
  • the method further includes:
  • the information reported by the user equipment is generated by the user equipment according to the measurement result of the all or part of the port of the first pilot resource of the at least one P port.
  • the measurement result is reference signal received power and/or reference signal received quality and/or channel state information measured value; the measurement reporting information includes:
  • Reference signal reception power and/or reference signal reception quality and/or channel state information measurement value of the all or part of ports of the P-port first pilot resource are reference signal reception power and/or reference signal reception quality and/or channel state information measurement value of the all or part of ports of the P-port first pilot resource.
  • the base station is further configured with at least one second pilot resource, and the method further includes:
  • At least one second pilot configured for the base station using the selected at least one beamforming matrix a pilot signal on the resource for beamforming
  • a beamformed pilot signal is transmitted on at least one second pilot resource configured by the base station.
  • a pilot transmission method in a MIMO system comprising:
  • a beamformed pilot signal is transmitted on the P first pilot resources, respectively.
  • the existing solution combines the feedback of the beamforming vector of the vertical dimension with the channel feedback of the horizontal dimension. Therefore, the overhead of the pilot resource to be configured by the eNB is large.
  • the technical solution provided by the embodiment of the present invention does not combine the feedback of the beamforming vector of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resources are only used.
  • the feedback of the beamforming matrix is performed to reduce the overhead of pilot resources. When P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the eNB configures P multi-port pilot resources to the UE, and the eN adopts different beamforming on different pilot resources.
  • the UE performs channel measurement on the configured P pilot resources, selects n pilot resources with the best measurement result, and n is an integer greater than or equal to 1, and then feeds back the information of the selected pilot resources to the eNB.
  • the eNB responds to the channel shaping according to the obtained information of the n pilot resources selected by the UE.
  • the channel measurement on the pilot resource may be reference symbol received power (RSRP), or reference symbol received quality (RSRQ), or channel state information (Channel state). Information).
  • RSRP reference symbol received power
  • RSRQ reference symbol received quality
  • Channel state Channel state information
  • the method further includes:
  • At least one beamforming matrix is selected in the beam shaping matrix to beamform the downlink signal sent to the user equipment by using the selected at least one beam shaping matrix.
  • the information reported by the user equipment is generated by the user equipment according to the measurement result on the P first pilot resources.
  • the measurement result is reference signal received power and/or reference signal received quality and/or channel state information measured value; the measurement reporting information includes:
  • Reference signal received power and/or reference signal received quality and/or channel state information measured values on the P first pilot resources are used.
  • the base station is further configured with at least one second pilot resource, and the method further includes:
  • a beamformed pilot signal is transmitted on at least one second pilot resource configured by the base station.
  • the embodiment of the present disclosure provides a pilot transmitting apparatus in a MIMO system, where the apparatus includes:
  • a first beamforming module configured to perform beamforming on a pilot signal on the first pilot resource of the at least one P port configured by the base station, and adopt different beamforming matrices on different ports of the same first pilot resource , P is an integer not less than 2;
  • a first pilot signal sending module configured to send the beamformed pilot signal on the at least one P port first pilot resource.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only used.
  • different beamforming matrices are used to perform beamforming on different ports of the first pilot resource of the P port to implement feedback of the beamforming matrix.
  • the dynamic adjustment of the beam in the vertical direction or the horizontal direction
  • the overhead of the pilot resources is greatly reduced compared with the prior art.
  • the device further includes:
  • the first measurement reporting information receiving module is configured to receive information reported by the user equipment after all or part of the ports of the at least one P port first pilot resource are measured;
  • a first beamforming matrix selecting module configured to select at least one beamforming matrix from a beamforming matrix used on each port of the P port first pilot resource according to the information reported by the user equipment,
  • the downlink signal transmitted to the user equipment is beamformed using the selected at least one beam shaping matrix.
  • the information reported by the user equipment is generated by the user equipment according to a measurement result on all or part of ports of the at least one P port first pilot signal.
  • the measurement result is reference signal received power and/or reference signal received quality and/or channel state information measured value; the measurement reporting information includes:
  • the identification information of the reference signal receiving power and/or the reference signal receiving quality and/or the channel state information having the highest measured value or
  • Reference signal reception power and/or reference signal reception quality and/or channel state information measurement value of the all or part of ports of the P-port first pilot resource are reference signal reception power and/or reference signal reception quality and/or channel state information measurement value of the all or part of ports of the P-port first pilot resource.
  • the base station is further configured with at least one second pilot resource
  • the device further includes:
  • a second beamforming module configured to perform beamforming on a pilot signal on the at least one second pilot resource configured by the base station by using the selected at least one beamforming matrix
  • a second pilot signal sending module configured to send the beamformed pilot signal on the at least one second pilot resource configured by the base station.
  • the embodiment of the present disclosure further provides a base station, in a multiple input multiple output system, the base station is configured with at least one P port first pilot resource, and P is an integer not less than 2, the base station Includes:
  • a processor configured to execute code having the following computer program: beamforming a pilot signal on a first pilot resource of at least one P port configured by a base station, different ports of the same first pilot resource Applying different beamforming matrices, P being an integer not less than 2; transmitting a beamformed pilot signal on the at least one P port first pilot resource;
  • a memory configured to hold code of the above computer program.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only used.
  • different beamforming matrices are used to perform beamforming on different ports of the first pilot resource of the P port to implement feedback of the beamforming matrix, thereby implementing the beam (in the vertical or horizontal direction)
  • the dynamic adjustment of the pilot resource greatly reduces the overhead of pilot resources compared to the prior art.
  • the embodiment of the present invention further provides a pilot transmitting apparatus in a MIMO system, where the apparatus includes:
  • the third beamforming module is configured to perform beamforming on the pilot signals on the P first pilot resources configured by the base station, and different beamforming matrices are used on different first pilot resources, where P is not less than An integer of 2;
  • a third pilot signal sending module configured to respectively send the beamformed pilot signals on the P first pilot resources.
  • the device provided by the embodiment of the present invention does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only used for performing The feedback of the vertical or horizontal beamforming matrix reduces the overhead of pilot resources. When P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the device further includes:
  • a second measurement reporting information receiving module configured to receive information reported by the user equipment after the P first pilot resources are measured
  • a second beamforming matrix selecting module configured to select at least one beamforming matrix from the beamforming matrix used on the P first pilot resources according to the information reported by the user equipment, to adopt the selection At least one beamforming matrix beamforms the downlink signal sent to the user equipment.
  • the information reported by the user equipment is generated by the user equipment according to the measurement result on the P first pilot resources.
  • the measurement result is reference signal received power and/or reference signal received quality and/or channel state information measured value; the measurement reporting information includes:
  • Reference signal received power and/or reference signal received quality and/or channel state information measured values on the P first pilot resources are used.
  • the base station is further configured with at least one second pilot resource
  • the device further includes:
  • a fourth beamforming module configured to perform beamforming on a pilot signal on the at least one second pilot resource configured by the base station by using the selected at least one beamforming matrix
  • a fourth pilot signal sending module configured to send the beamformed pilot signal on the at least one second pilot resource configured by the base station.
  • the embodiment of the present disclosure provides a base station, in a multiple input multiple output system, the base station is configured with P first pilot resources, and P is an integer not less than 2.
  • the base station includes:
  • a processor configured to perform a computer program for performing beamforming on pilot signals on P first pilot resources configured by the base station, different from different first pilot resources a beamforming matrix; transmitting a beamformed pilot signal on the P first pilot resources;
  • a memory configured to hold code of the above computer program.
  • the base station provided by the embodiment of the present invention does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is used only for performing The feedback of the vertical or horizontal beamforming matrix reduces the overhead of pilot resources. When P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • a pilot measurement method in a MIMO system comprising:
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only used.
  • the feedback of the beamforming matrix is implemented to realize the feedback of the beamforming matrix, thereby realizing the dynamic adjustment of the beam (in the vertical direction or the horizontal direction), which greatly reduces the overhead of the pilot resources compared with the prior art.
  • the reporting is performed after the measurement is performed on the all or part of the ports of the at least one P-port first pilot resource, including:
  • the technical solution provided by the embodiment of the present disclosure does not need to feed back the measured measurement result, and only needs to feed back the measurement report information generated according to the measurement result on the first pilot resource of the at least one P port, thereby reducing the uplink feedback overhead. .
  • the measurement result is reference signal received power and/or reference signal received quality and/or channel state information measured value; the measurement reporting information includes:
  • the identification information of the reference signal receiving power and/or the reference signal receiving quality and/or the channel state information having the highest measured value or
  • the reference signal received power and/or the reference signal received quality measurement value of the all or part of the ports of the P-port first pilot resource are used to estimate the reference signal received power and/or the reference signal received quality measurement value of the all or part of the ports of the P-port first pilot resource.
  • a pilot measurement method in a MIMO system comprising:
  • the measurement is performed on the P first pilot resources and then reported.
  • the technical solution provided by the embodiment of the present invention does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only used for Feedback of the vertical or horizontal beamforming matrix is performed, thereby reducing the overhead of pilot resources.
  • P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the method includes:
  • the technical solution provided by the embodiment of the present disclosure does not need to feed back the measurement result measured each time, and only needs to feed back the measurement report information generated according to the measurement result on all or part of the ports of the first pilot resource, thereby reducing the uplink. Feedback overhead.
  • the measurement result is reference signal received power and/or reference signal received quality and/or channel state information measured value; the measurement reporting information includes:
  • Reference signal received power and/or reference signal received quality and/or channel state information measured values on the P first pilot resources are used.
  • the embodiment of the present disclosure further provides a pilot measurement apparatus in a MIMO system, including:
  • a first pilot measurement module configured to perform measurement on all or part of ports of the first pilot resource of the at least one P port configured by the base station, where P is an integer not less than 2;
  • the first measurement reporting module is configured to perform measurement on the all or part of the port of the at least one P port first pilot resource, and then report the result.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only used.
  • the feedback of the beamforming matrix is performed to realize the feedback of the beamforming matrix, thereby realizing the dynamic adjustment of the beam (in the vertical direction or the horizontal direction), which is greatly reduced compared with the prior art. Less overhead for pilot resources.
  • the first measurement reporting module is specifically configured to:
  • the measurement result is a reference signal received power and/or a reference signal received quality and/or a channel state information measurement value; and the measurement report information includes:
  • the identification information of the reference signal receiving power and/or the reference signal receiving quality and/or the channel state information having the highest measured value or
  • Reference signal reception power and/or reference signal reception quality and/or channel state information measurement value of the all or part of ports of the P-port first pilot resource are reference signal reception power and/or reference signal reception quality and/or channel state information measurement value of the all or part of ports of the P-port first pilot resource.
  • the embodiment of the present disclosure further provides a user equipment, including:
  • a processor configured to perform a computer program for performing measurements on all or a portion of ports of at least one P-port first pilot resource configured by the base station, P being an integer not less than 2; Reporting on all or part of the ports of the at least one P-port first pilot resource;
  • a memory configured to hold code of the above computer program.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only used.
  • the feedback of the beamforming matrix is implemented to realize the feedback of the beamforming matrix, thereby realizing the dynamic adjustment of the beam (in the vertical direction or the horizontal direction), which greatly reduces the overhead of the pilot resources compared with the prior art.
  • the embodiment of the present invention further provides a pilot measurement device in a MIMO system, where the device includes:
  • a second pilot measurement module configured to perform measurement on the P first pilot resources configured by the base station, where P is an integer not less than 2;
  • the second measurement reporting module is configured to perform measurement on the P first pilot resources and report the result.
  • the technical solution provided by the embodiment of the present invention does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only used for Feedback of the beamforming matrix is performed, thereby reducing the overhead of pilot resources.
  • P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the second measurement reporting module is specifically configured to:
  • the measurement result is reference signal received power and/or reference signal received quality and/or channel state information measured value; the measurement reporting information includes:
  • Reference signal received power and/or reference signal received quality and/or channel state information measured values on the P first pilot resources are used.
  • the embodiment of the present invention further provides a user equipment, including:
  • a processor configured to execute a computer program having the following functions: performing measurements on P first pilot resources configured by the base station, P being an integer not less than 2; and the first pilots in the P Reported on the resource and reported; and
  • a memory configured to hold code of the above computer program.
  • the technical solution provided by the embodiment of the present invention does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only used for Feedback of the beamforming matrix is performed, thereby reducing the overhead of pilot resources.
  • P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • FIG. 1 is a flowchart of a first method for transmitting a pilot according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a second method for transmitting a pilot according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a first pilot measurement method provided by an embodiment of the present disclosure
  • 5a-5h are schematic diagrams of a single-port first pilot resource in a conventional cyclic prefix according to an embodiment of the present disclosure
  • 6a-6h are schematic diagrams of a single-port first pilot resource in an extended cyclic prefix according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a first pilot transmitting apparatus according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a second pilot transmitting apparatus according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a first pilot measurement apparatus provided by an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a second pilot measurement apparatus according to an embodiment of the present disclosure.
  • the base station is configured with P K ports first pilot resources, P is an integer not less than 2, and K is an integer smaller than the number of rows or columns of the two-dimensional antenna array of the base station.
  • P is an integer not less than 2
  • K is an integer smaller than the number of rows or columns of the two-dimensional antenna array of the base station.
  • the value of K is not limited to an integer smaller than the number of rows or columns of the two-dimensional antenna array of the base station, and other suitable values may be selected as needed.
  • the first pilot resource of a K port refers to a set of time-frequency resources.
  • the value of P is related to the number of beamforming matrices configured for the user equipment.
  • the value of P is the same as the number of beamforming matrices configured for the user equipment. If the beamforming matrix is used for beamforming in the vertical dimension, then K is smaller than the number of columns of the two-dimensional antenna array of the base station, and if the beamforming matrix is used for beamforming in the horizontal dimension, then K is smaller than the base station The number of rows in the two-dimensional antenna array.
  • the value of K is not limited to the number of rows of the two-dimensional antenna array smaller than the base station, and other suitable values may be selected as needed.
  • the MIMO system in this application scenario may be, but is not limited to, a 3D/FD MIMO system, or other MIMO systems in which antennas are disposed in a vertical dimension.
  • the method for transmitting a pilot in a MIMO system is as shown in FIG. 1 , and specifically includes the following operations:
  • Step 100 Perform beamforming on the pilot signals on the first pilot resources of the P K ports configured by the base station, and adopt different beamforming matrices on different first pilot resources.
  • the value of K is a positive integer greater than or equal to 1.
  • different beamforming matrices are used for beamforming on different K-port first pilot resources.
  • Step 110 Send a beamformed pilot signal to the UE on the Pth K port first pilot resources.
  • the pilot signal may be, but is not limited to, a CSI-RS, a Cell-specific Reference Signal (CRS), and the like.
  • the above process may be, but is not limited to, implemented by a base station.
  • the above process is suitable for the dynamic adjustment of the beamforming in the vertical direction, and of course also for the dynamic adjustment of the beamforming in the horizontal direction.
  • a special case of beamforming is beamforming matrix.
  • the existing solution is to combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension. Therefore, the eNB needs to configure P M ports. Pilot resources, where P is the number of vertical dimension shaping matrices, and M is the number of columns of the two-dimensional antenna array.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only For performing feedback of the (vertical or horizontal) beamforming matrix, the number of ports of the configured first pilot resource may be smaller than the number of rows or columns of the two-dimensional antenna array, thereby reducing the overhead of pilot resources.
  • P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the selection of the vertical beamforming matrix is taken as an example.
  • the method of the present disclosure can also be used for the selection of the horizontal beamforming matrix. The method is the same and will not be described again.
  • the method further includes: receiving information that is reported by the UE after performing measurement on the first pilot resources of the P K ports; and first, from the P K ports according to the information reported by the UE At least one beamforming matrix is selected from the beamforming matrix used on the pilot resources to beamform the downlink signals transmitted to the UE using the selected at least one beamforming matrix.
  • the information reported by the UE may be, but is not limited to, generated by the UE according to the measurement result on the first pilot resources of the P K ports.
  • the information reported by the UE may also be the measurement result on the first pilot resources of the P K ports.
  • the measurement result may be, but is not limited to, Reference Signal Receiving Power (RSRP) and/or Reference Signal Receiving Quality (RSRQ) and/or channel state information measurement.
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • channel state information measurement Taking the RSRP and/or RSRQ measurement values as an example, the measurement report information may be, but is not limited to, one of the following:
  • the identifier information of the first pilot resource of the first L K ports which is in descending order of the RSRP and/or the RSRQ measurement value, L is an integer smaller than P, wherein the identifier information of the first K pilot resources of the feedback L ports is corresponding RSRP and/or RSRQ in ascending or descending order;
  • the RSR Q and/or RSRQ measurements on the first P pilot ports of the feedback are sorted in ascending or descending order.
  • the identifier information of the first pilot resource of the K port may be, but is not limited to, an index of the first pilot resource of the K port.
  • the vertical beamforming matrix used on the K-port first pilot resource corresponding to the identifier information is selected.
  • the vertical direction used on the K port first pilot resource corresponding to the identifier information may be used. Select at least one of the beamforming matrices.
  • the measurement reporting information includes RSRP and/or RSRQ measurements on the P pilot ports of the K ports, sorting according to RSRP and/or RSRQ measurements, the vertical used from the corresponding K port first pilot resources Select at least one of the beamforming matrices.
  • the base station is configured with at least one second pilot resource by using at least one vertical beamforming matrix to perform 3D/FD MIMO beamforming.
  • the corresponding implementation manner may be: using at least one selected vertical beam assignment.
  • the shape matrix performs vertical beamforming on the pilot signal on the at least one second pilot resource configured by the base station (ie, performing vertical beamforming on the downlink signal sent to the UE by using the selected at least one vertical beamforming matrix);
  • a pilot signal that is shaped by a vertical beam is transmitted on at least one second pilot resource configured by the base station.
  • the pilot signal on all of the second pilot resources is vertically beamformed using the selected vertical beamforming matrix.
  • the UE performs measurement on the second pilot resource and feeds back the measurement result.
  • the beamforming is performed on the 3D/FD MIMO antenna array according to the measurement result fed back by the UE, and the beamforming of the 3D/FD MIMO antenna array does not need to be further processed.
  • the base station uses different vertical beamforming matrices to perform vertical beams on pilot signals on different second pilot resources. Forming.
  • the UE performs measurements on the two second pilot resources and feeds back the measurement results measured on the two second pilot resources.
  • the beamforming scheme of the 3D/FD MIMO antenna array is selected according to the feedback result of the UE measuring the two second pilot resources respectively.
  • a base station is configured with at least one P-port first pilot resource, and P is an integer not less than 2.
  • the first pilot resource of the P port refers to a set of time-frequency resources.
  • the value of P is related to the number of beamforming matrices configured for the user equipment.
  • the value of P is the same as the number of beamforming matrices configured for the user equipment.
  • the number of configured first pilot resources of the P port is smaller than the number of rows or columns of the two-dimensional antenna matrix.
  • the MIMO system in this application scenario may be, but is not limited to, a 3D/FD MIMO system, or other MIMO systems in which antennas are disposed in a vertical dimension.
  • the following is a description of the configuration of a P-port first pilot resource.
  • the implementation of the first pilot resource of two or more P-ports can be referred to the following description, and details are not described herein.
  • the method for transmitting a pilot in another MIMO system is as shown in FIG. 2, and specifically includes the following operations:
  • Step 200 Perform beamforming on the pilot signal on the first pilot resource of the at least one P port configured by the base station, and configure the number of the first pilot resources to be smaller than the number of rows or columns of the two-dimensional antenna array of the base station.
  • Different beamforming matrices are used on different ports of a first pilot resource, and P is an integer not less than 2.
  • Step 210 Send a beamformed pilot signal on the P-port first pilot resource.
  • the above process may be, but is not limited to, implemented by a base station.
  • the above process is suitable for dynamic adjustment of beamforming in the vertical direction, and of course also for waves.
  • the beam shape is dynamically adjusted in the horizontal direction.
  • the existing solution is to combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension. Therefore, the eNB needs to configure P M ports. Pilot resources.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only
  • beamforming is performed on different ports of the first pilot resource of the P port by using different beamforming matrices to implement feedback of the beamforming matrix, thereby implementing the beam (in the vertical direction or horizontally) Dynamic adjustment of the direction) greatly reduces the overhead of pilot resources compared to the prior art.
  • the technical solution provided by the embodiment of the present disclosure further includes:
  • the information reported by the UE may be, but is not limited to, generated by the UE according to the measurement result on all or part of the ports of the P-port first pilot resource.
  • the information reported by the UE may also be the measurement result on the first pilot resource of the P port.
  • the measurement results may be, but are not limited to, RSRP and/or RSRQ measurements.
  • the measurement report information may be, but is not limited to, one of the following:
  • the identification information of the first L' ports arranged in descending order of the RSRP and/or RSRQ measurement values, L' is an integer smaller than the number of all or part of the ports, wherein the identifier information of the L' ports fed back according to the corresponding RSRP and / Or ascending or descending order of RSRQ;
  • the RSRP and/or RSRQ measurements of all or part of the ports of the P-port first pilot resource are arranged in ascending or descending order.
  • the identifier information of the port of the first pilot resource of the P port may be, but is not limited to, an index of the port.
  • the vertical beam shaping matrix used on the port corresponding to the identification information is selected.
  • the measurement report information includes identification information of the first L' ports arranged in descending order of RSRP and/or RSRQ measurement values, at least one of the vertical beam shaping matrices used on the ports corresponding to the identification information may be selected.
  • the measurement report information includes RSRP and/or RSRQ measurements of all or part of the ports of the P-port first pilot resource, sorting according to RSRP and/or RSRQ measurements, forming a vertical beam from the corresponding port Select at least one of the matrices.
  • the downlink signal sent to the UE is vertically beamformed by using at least one selected vertical beamforming matrix, combined with the above description, those skilled in the art can obtain other selection methods without any creative labor.
  • the selected vertical beamforming matrix can be used to solve other problems, such as beamforming, precoding, etc. of 3D/FD MIMO. Wait.
  • problems such as beamforming, precoding, etc. of 3D/FD MIMO.
  • the embodiment of the present disclosure provides a pilot measurement method in a MIMO system. As shown in FIG. 3, the method specifically includes the following operations:
  • Step 300 Perform measurement on the first pilot resources of the P K ports configured by the base station, and use different beamforming matrices on different first pilot resources to perform beamforming, where P is an integer not less than 2, and K is smaller than An integer of the number of rows or columns of the base station two-dimensional antenna array.
  • P is an integer not less than 2
  • K is smaller than An integer of the number of rows or columns of the base station two-dimensional antenna array.
  • the value of K is not limited to an integer smaller than the number of rows or columns of the two-dimensional antenna array of the base station, and other suitable values may be selected as needed.
  • the number of ports of different first pilot resources may be the same or different.
  • the first pilot resource of the P K ports configured by the base station may be obtained according to a predetermined agreement, and the first pilot resources of the P K ports configured by the base station may be obtained by means of high layer signaling, etc., and the disclosure text is known to P.
  • the specific manner of the K-port first pilot resources is not limited.
  • Step 310 Perform measurement on the first pilot resources of the P K ports and report the result.
  • the measurement result may be at least one of the following: an RSRP measurement, an RSRQ measurement, a CSI, and the like.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only used.
  • the feedback of the vertical or horizontal beamforming matrix is performed, so that the configured number of ports of the first pilot resource can be smaller than the number of rows or columns of the two-dimensional antenna array, thereby reducing the overhead of pilot resources.
  • P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the method includes:
  • the technical solution provided by the embodiment of the present disclosure does not need to feed back the measurement result of each measurement, and only needs to feed back the measurement report information generated according to the measurement result on the first pilot resource of the P K ports, thereby reducing the uplink feedback overhead. .
  • the above pilot measurement feedback method is applicable to the first application scenario described above, and is implemented in conjunction with the method shown in FIG. It should be noted that the above pilot measurement feedback method is not limited to the first application scenario described above.
  • a preferred implementation of the foregoing step 310 is to generate measurement report information according to the measurement result on the first pilot resources of the P K ports in a predetermined time period.
  • the measurement result is the RSRP and/or the RSRQ measurement value
  • the content of the measurement report information may be referred to the description of the foregoing embodiment, and details are not described herein again.
  • Another pilot measurement method in a MIMO system provided by the embodiment of the present disclosure, as shown in FIG. 4, the method specifically includes the following operations:
  • Step 400 Perform measurement on all or part of ports of the first pilot resource of at least one P port configured by the base station, and use different beamforming matrices on different ports of the same first pilot resource to perform beamforming.
  • the number of the first pilot resources is smaller than the number of rows or columns of the two-dimensional antenna array of the base station, and P is an integer not less than 2.
  • the first pilot resource of the P port configured by the base station may be obtained according to a predetermined agreement, and the first pilot resource of the P port configured by the base station may be obtained by means of high-level signaling, etc.
  • the specific method of frequency resources is not limited.
  • the identifier information of the first pilot resource of the P port, the subframe offset, the period, and the like need to be known.
  • Step 410 Perform measurement on the all or part of the ports of the first pilot resource of the at least one P port and report the result.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only used.
  • different beamforming matrices are used to perform beamforming on different ports of the first pilot resource of the P port to implement feedback of the beamforming matrix, thereby implementing the beam (in the vertical or horizontal direction)
  • the dynamic adjustment of the pilot resource greatly reduces the overhead of pilot resources compared to the prior art.
  • the reporting is performed after the measurement is performed on the all or part of the ports of the at least one P-port first pilot resource, including:
  • the technical solution provided by the embodiment of the present disclosure does not need to feed back the measurement result measured each time, and only needs to feed back the measurement report information generated according to the measurement result on all or part of the ports of the first pilot resource, thereby reducing the uplink. Feedback overhead.
  • the UE does not need to have the capability of processing multiple pilot resources.
  • a preferred implementation of the foregoing step 410 is to generate measurement report information according to measurement results on all or part of ports of the P-port first pilot resource in a predetermined time period.
  • the measurement result is the RSRP and/or the RSRQ measurement value
  • the content of the measurement report information may be referred to the description of the foregoing embodiment, and details are not described herein again.
  • the base station has a set of vertical beamforming matrices, such as ⁇ V1, V2, ... VP ⁇ , and the base station configures P single-port or multi-port first pilot resources.
  • the base station performs vertical beamforming using different vertical beamforming matrices on different first pilot resources. For example, vertical beamforming is performed using the vertical beamforming matrix Vi at the ith first pilot resource.
  • the base station sends the CSI-RS to the UE after the first pilot resource after the vertical beamforming.
  • the UE measures each first pilot resource to obtain an RSRP measurement value on the first pilot resource.
  • the UE then generates measurement report information according to the RSRP measurement value on each of the first pilot resources and sends the measurement report information to the base station.
  • the base station may obtain the information of the optimal vertical dimension beamforming matrix according to the received measurement report information, which may be an optimal vertical beamforming matrix (for example, V1) or A set of preferred vertical beamforming matrices (such as ⁇ V1, V2 ⁇ ).
  • an optimal vertical beamforming matrix for example, V1
  • a set of preferred vertical beamforming matrices such as ⁇ V1, V2 ⁇ .
  • the single-port first pilot resource is a single-port first pilot resource configured by the base station, as shown in FIG. 5a to FIG. 5h.
  • the first pilot resource is configured on the port R15, and the first pilot resource is configured on the port R16, and the first pilot resource is configured on the port R17, as shown in FIG. 5b.
  • Figure 5d shows the configuration of the first pilot resource on port R18
  • Figure 5e shows the configuration of the first pilot resource on port R19
  • Figure 5f shows the configuration of the first pilot resource on port R20.
  • Figure 5g The first pilot resource is configured on port R21, and the first pilot resource is configured on port R22 in FIG. 5h.
  • the extended pilot prefix extended cyclic prefix
  • the first pilot resource is configured on the port R15
  • the first pilot resource is configured on the port R16
  • the first pilot resource is configured on the port R17, as shown in FIG. 6b.
  • Figure 6d shows the configuration of the first pilot resource on port R18
  • Figure 6e shows the configuration of the first pilot resource on port R19
  • Figure 6f shows the configuration of the first pilot resource on port R20
  • Figure 6g The first pilot resource is configured on port R21, and the first pilot resource is configured on port R22 in FIG. 6h.
  • the base station is configured with a first pilot resource of a P port.
  • the UE is configured to perform RSRP measurement on L ports of the first pilot resource.
  • the base station is configured with a set of vertical beamforming matrices, such as ⁇ V1, V2, ... VP ⁇ .
  • the base station performs vertical beamforming on each port in the first pilot resource of the P port by using different vertical beamforming matrices. For example, the i-th port uses vertical beam assignment
  • the shape matrix Vi performs vertical beamforming.
  • the base station sends the CSI-RS to the UE after the first pilot resource after the vertical beamforming.
  • the UE measures each port of the first pilot resource to obtain an RSRP measurement value on the port.
  • the UE generates measurement report information according to the RSRP measurement value on each port and sends the measurement report information to the base station.
  • the base station may obtain the information of the optimal vertical beamforming matrix according to the received measurement report information, which may be an optimal vertical beamforming matrix (for example, V1) or a A group of better vertical beamforming matrices (such as ⁇ V1, V2 ⁇ ).
  • the implementation manner corresponding to the second application scenario further reduces the pilot overhead.
  • the pilot resources in LTE are designed in the CDM/FDM mode, and each pilot port occupies two resource blocks.
  • the first pilot resource overhead is 2P resource fragments; if the N pilot resources of the first multi-port are configured Then, the overhead of the first pilot resource will be even larger.
  • the implementation manner of application scenario 2 only P resource granules are needed, and at least half of the first pilot resource overhead is reduced.
  • the implementation manner corresponding to the second application scenario further reduces the pilot signaling overhead.
  • the P first pilot resources need P high-level signaling, but the implementation manner of the second application scenario only needs one high-level signaling.
  • the embodiment of the present disclosure provides a pilot transmitting apparatus in a MIMO system.
  • the apparatus includes:
  • the third beamforming module 701 is configured to perform beamforming on the pilot signals on the first pilot resources of the P K ports configured by the base station, and adopt different beamforming matrices on different first pilot resources, For an integer not less than 2, K is an integer smaller than the number of rows or columns of the two-dimensional antenna array of the base station;
  • the third pilot signal sending module 702 is configured to send a beamformed pilot signal to the user equipment on the P first K port first pilot resources.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only used.
  • the feedback of the vertical or horizontal beamforming matrix is performed, so that the configured number of ports of the first pilot resource can be smaller than the number of rows or columns of the two-dimensional antenna array, thereby reducing the overhead of pilot resources.
  • P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the device further includes:
  • a second measurement reporting information receiving module configured to receive information reported by the user equipment after the first pilot resource of the P K ports is measured
  • a second beamforming matrix selecting module configured to select at least one beamforming matrix from a beamforming matrix used on the first pilot resources of the P K ports according to the information reported by the user equipment, to The downlink signal transmitted to the user equipment is beamformed using the selected at least one beamforming matrix.
  • the information reported by the user equipment may be, but is not limited to, generated by the UE according to the measurement result on the first pilot resources of the P K ports.
  • the information reported by the UE may also be the measurement result on the first pilot resources of the P K ports.
  • the measurement result is a reference signal received power and/or a reference signal received quality measurement value; and the measurement report information includes:
  • the reference signal received power and/or the reference signal receives the identification information of the K-port first pilot resource with the highest quality measurement value
  • the reference signal received power and/or the reference signal received quality measurement value on the P K port first pilot resources are used.
  • the base station is further configured with at least one second pilot resource
  • the device further includes:
  • a fourth beamforming module configured to perform beamforming on a pilot signal on the at least one second pilot resource configured by the base station by using the selected at least one beamforming matrix
  • a fourth pilot signal sending module configured to send the beamformed pilot signal on the at least one second pilot resource configured by the base station.
  • the embodiment of the present disclosure provides a base station.
  • the base station is configured with P K ports first pilot resources, P is an integer not less than 2, and K is smaller than An integer of the number of rows or columns of the two-dimensional antenna array of the base station, the base station includes:
  • a processor configured to execute a computer program having the following functions: beamforming the pilot signals on the first K pilot resources of the P K ports configured by the base station, respectively Applying different beamforming matrices to a pilot resource; respectively transmitting a beamformed pilot signal to the user equipment on the P pilot ports of the P ports;
  • a memory configured to hold code of the above computer program.
  • the base station provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only used for The feedback of the vertical or horizontal beamforming matrix is performed, so the number of ports of the configured first pilot resource can be smaller than the number of rows or columns of the two-dimensional antenna array, thereby reducing the overhead of pilot resources.
  • P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the embodiment of the present disclosure further provides a pilot transmitting apparatus in a MIMO system.
  • the apparatus includes:
  • the first beamforming module 801 is configured to perform beamforming on a pilot signal on the first pilot resource of the at least one P port configured by the base station, where the number of configured first pilot resources is smaller than that of the base station
  • the number of rows or columns, different beamforming matrices on different ports of the same first pilot resource, P is an integer not less than 2;
  • the first pilot signal sending module 802 is configured to send a beamformed pilot signal to the user equipment on the at least one P port first pilot resource.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only used.
  • different beamforming matrices are used to perform beamforming on different ports of the first pilot resource of the P port, thereby realizing feedback of the beamforming matrix of the vertical dimension or the horizontal dimension, and further Realizing the dynamic adjustment of the beam in the vertical or horizontal direction greatly reduces the overhead of the pilot resources compared to the prior art.
  • the device further includes:
  • a first measurement reporting information receiving module configured to report information after the measurement is performed on all or a part of the ports of the at least one P port first pilot resource
  • a first beamforming matrix selecting module configured to select at least one beamforming matrix from a beamforming matrix used on each port of the P port first pilot resource according to the information reported by the user equipment,
  • the downlink signal transmitted to the user equipment is beamformed using the selected at least one beam shaping matrix.
  • the information reported by the user equipment is generated by the user equipment according to the measurement result on the first pilot resources of the P K ports.
  • the measurement result is a reference signal received power and/or a reference signal received quality measurement value; and the measurement report information includes:
  • the reference signal receiving power and/or the reference signal receiving the identification information of the port with the highest quality measurement value are examples of the reference signal receiving power and/or the reference signal receiving the identification information of the port with the highest quality measurement value.
  • the reference signal received power and/or the reference signal received quality measurement value of the all or part of the ports of the P-port first pilot resource are used to estimate the reference signal received power and/or the reference signal received quality measurement value of the all or part of the ports of the P-port first pilot resource.
  • the base station is further configured with at least one second pilot resource
  • the device further includes:
  • a second beamforming module configured to perform beamforming on a pilot signal on the at least one second pilot resource configured by the base station by using the selected at least one beamforming matrix
  • a second pilot signal sending module configured to send the beamformed pilot signal on the at least one second pilot resource configured by the base station.
  • the embodiment of the present disclosure further provides a base station, in a multiple input multiple output system, the base station is configured with at least one P port first pilot resource, and P is an integer not less than 2, the base station include:
  • a processor configured to execute code having a computer program for beamforming a pilot signal on a first pilot resource of at least one P port configured by a base station, the number of configured first pilot resources being less than The number of rows or columns of the two-dimensional antenna array of the base station, different beamforming matrices are used on different ports of the same first pilot resource, P is an integer not less than 2; first guide at the at least one P port Transmitting a beamformed pilot signal to a user equipment on a frequency resource;
  • a memory configured to hold code of the above computer program.
  • the base station provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P port first pilot resource, and the first pilot resource is only used for Perform feedback on vertical or horizontal beamforming matrices using different beamforming moments
  • the beam is shaped on the different ports of the first pilot resource of the P port to realize the feedback of the beamforming matrix of the vertical dimension or the horizontal dimension, thereby realizing the dynamic adjustment of the beam in the vertical direction or the horizontal direction, compared with the prior art.
  • the overhead of pilot resources is greatly reduced.
  • the embodiment of the present disclosure further provides a pilot measurement device in a MIMO system, as shown in FIG. 9, including:
  • the second pilot measurement module 901 is configured to perform measurement on the first pilot resources of the P K ports configured by the base station, and different beamforming matrices are used to perform beamforming on different first pilot resources, where P is An integer not less than 2, where K is an integer smaller than the number of rows or columns of the two-dimensional antenna array of the base station;
  • the second measurement reporting module 902 is configured to perform measurement on the P-ports of the first pilot resources of the P-ports.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only used.
  • the feedback of the beamforming matrix is performed, so that the configured number of ports of the first pilot resource may be smaller than the number of rows or columns of the two-dimensional antenna array, thereby reducing the overhead of pilot resources.
  • P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the second measurement reporting module 902 is specifically configured to:
  • the technical solution provided by the embodiment of the present disclosure does not need to feed back the measurement result of each measurement, and only needs to feed back the measurement report information generated according to the measurement result on the first pilot resource of the P K ports, thereby reducing the uplink feedback overhead. .
  • the measurement result is a reference signal received power and/or a reference signal received quality measurement value; and the measurement report information includes:
  • the reference signal received power and/or the reference signal receives the identification information of the K-port first pilot resource with the highest quality measurement value
  • the reference signal received power and/or the reference signal received quality measurement value on the P K port first pilot resources are used.
  • the embodiment of the present disclosure further provides a user equipment, including:
  • a processor configured to execute a computer program having the following functions: performing measurement on the first pilot resources of the P K ports configured by the base station, and using different beamforming matrices on different first pilot resources Beamforming, P is an integer not less than 2, and K is an integer smaller than the number of rows or columns of the two-dimensional antenna array of the base station; and is reported after being measured on the first pilot resources of the P K ports ;as well as
  • a memory configured to hold code of the above computer program.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures P first pilot resources, and the first pilot resource is only used.
  • the feedback of the beamforming matrix is performed. Therefore, the number of ports of the configured first pilot resource may be smaller than the number of rows or columns of the two-dimensional antenna array, thereby reducing the overhead of the pilot resources.
  • P single-port first pilot resources are configured, the overhead of pilot resources will be greatly reduced.
  • the embodiment of the present disclosure further provides a pilot measurement reporting device in a MIMO system.
  • the device includes:
  • the first pilot measurement module 1001 is configured to perform measurement on all or part of the ports of the first pilot resource of the at least one P port configured by the base station, where the number of configured first pilot resources is smaller than the row of the two-dimensional antenna array of the base station. Number or number of columns, different beamforming matrices on different ports of the same first pilot resource for beamforming, P being an integer not less than 2;
  • the first measurement reporting module 1002 is configured to perform measurement on the all or part of the port of the at least one P port first pilot resource, and then report the result.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only used.
  • different beamforming matrices are used to perform beamforming on different ports of the first pilot resource of the P port to implement feedback of the beamforming matrix, thereby implementing the beam (in the vertical or horizontal direction)
  • the dynamic adjustment of the pilot resource greatly reduces the overhead of pilot resources compared to the prior art.
  • the first measurement reporting module 1002 is specifically configured to:
  • the technical solution provided by the embodiment of the present disclosure does not need to feed back the measurement result measured each time, and only needs to feed back the measurement report information generated according to the measurement result on all or part of the ports of the first pilot resource of the P port, thus reducing Uplink feedback overhead.
  • the measurement result is a reference signal received power and/or a reference signal received quality measurement value; and the measurement report information includes:
  • the reference signal receiving power and/or the reference signal receiving the identification information of the port with the highest quality measurement value are examples of the reference signal receiving power and/or the reference signal receiving the identification information of the port with the highest quality measurement value.
  • the reference signal received power and/or the reference signal received quality measurement value of the all or a portion of the ports of the at least one P-port first pilot resource are used to measure the reference signal received quality measurement value of the all or a portion of the ports of the at least one P-port first pilot resource.
  • the embodiment of the present disclosure further provides a user equipment, including:
  • a processor configured to perform a computer program that performs measurement on all or a portion of ports of at least one P-port first pilot resource configured by the base station, the number of configured first pilot resources being less than the base station
  • the number of rows or columns of the two-dimensional antenna array, beamforming is performed by using different beamforming matrices on different ports of the same first pilot resource, P is an integer not less than 2; at the at least one P port Reporting is performed on all or part of the ports of the first pilot resource;
  • a memory configured to hold code of the above computer program.
  • the technical solution provided by the embodiment of the present disclosure does not combine the feedback of the beamforming matrix of the vertical dimension with the channel feedback of the horizontal dimension, but configures the P-port first pilot resource, and the first pilot resource is only used.
  • different beamforming matrices are used to perform beamforming on different ports of the first pilot resource of the P port to implement feedback of the beamforming matrix, thereby implementing the beam (in the vertical or horizontal direction)
  • the dynamic adjustment of the pilot resource greatly reduces the overhead of pilot resources compared to the prior art.
  • embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • 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

本公开文本公开了一种MIMO系统中导频发送、测量方法及装置。对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，相同第一导频资源的不同端口上采用不同的波束赋形矩阵，P为不小于2的整数；以及在所述至少一个P端口第一导频资源上发送经过波束赋形的导频信号。

Description

MIMO系统中的导频发送方法、测量方法及装置
相关申请的交叉参考
本申请主张在2014年7月30日在中国提交的中国专利申请号No.201410370321.0和在2015年7月17日在中国提交的中国专利申请号No.201510424642.9的优先权，其全部内容通过引用包含于此。
技术领域
本公开文本涉及无线通信技术领域，尤其涉及一种多输入多输出系统中的导频发送方法、测量方法及装置。
背景技术
在现有的蜂窝系统中，基站天线阵列一般呈水平排列。每个天线实际上包括一组天线阵子，每组天线阵子由一个射频单元共同控制，不同组天线阵子用不同射频单元控制。基站发射端波束仅能在水平方向进行调整，而垂直方向是固定的下倾角，因此各种波束赋形/预编码技术等均是基于水平方向信道信息进行的。事实上，由于无线信号在空间中是三维传播的，因此固定下倾角的方法不能使系统的性能达到最优。垂直方向的波束调整对于降低小区间干扰，提高系统性能有着很重要的意义。
随着天线技术的发展，业界已出现能够对每个天线阵子独立控制的有源天线。采用这种设计，天线阵列会由现在的两维水平排列增强到三维水平和垂直排列，即三维(3D)多输入多输出(Multiple-Input Multiple-Output，MIMO)天线技术。这种天线阵列的方式，使得波束在垂直方向的动态调整成为可能。因为每个天线阵子可以单独控制，因此这种天线技术也被称为全维度(Full-Dimension，FD)MIMO。
要实现波束在垂直方向上的动态调整，进而实现三维的波束赋形/预编码，需要依靠用户设备(User Equipment，UE)上报的信道状态信息(Channel State Information，CSI)。然而，现有的方案实际上是把垂直波束赋形向量的反馈和水平维度的信道反馈结合在一起。该方案存在的主要技术问题包括：
将垂直维度的波束赋形向量的反馈与水平维度的信道反馈结合在一起，eNB需要配置的导频资源的开销大；以及
为了使得eNB得到最好的垂直波束赋形向量的信息，UE需要反馈每次测量到的全部测量结果，导致上行反馈开销大。
发明内容
本公开文本的目的是提供一种MIMO系统中的导频发送方法、导频测量方法及装置，以解决CSI-RS资源开销大的问题。
本公开文本的目的是通过以下技术方案实现的：
一种MIMO系统中的导频发送方法，该方法包括：
对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵，P为不小于2的整数；以及
在所述至少一个P端口第一导频资源上发送经过波束赋形的导频信号。
基于上述应用场景，为实现波束在垂直方向的动态调整，现有的方案是将垂直维度的波束赋形向量的反馈与水平维度的信道反馈结合在一起，因此，eNB需要配置的导频资源的开销大。而本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形向量的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，采用不同波束赋形矩阵在P端口第一导频资源的不同端口上进行波束赋形，实现波束赋形矩阵的反馈，进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减少了导频资源的开销。
作为一个非限制性的实施例，eNB配置一个P端口的导频资源给UE，eNB在不同的端口采用不同的波束赋形矩阵进行赋形。UE在配置的P个端口上进行信道测量，选取其中测量结果最佳的n个端口，n为大于等于1的整数，n也可以等于P，然后将选取的端口信息通知给eNB。eNB根据得到的UE选取的n个端口来相应进行信道赋形。其中，P个端口上的信道测量可以是参考信号接收功率(reference symbol received power，简称RSRP)，或者是参考信号接收质量(reference symbol received quality，简称RSRQ)，也可以是信 道状态信息(Channel state information)。UE在选取n个端口时候，较佳的，可以选取n＞＝1个测量结果最佳的端口。UE反馈的n的端口可以有多种实现方式，比如选取最佳的n＝1端口并上报其端口索引(index)，或者选取n＜P个端口并上报选取端口索引，这样UE不需要上报P个端口上的所有的信道测量，而是只上报n＜P个选取的端口资源的索引，减小了上行反馈开销。另外因为UE对P个端口进行测量，相比于测量P个多端口的导频资源，UE复杂度降低。或者，UE也可以不进行端口选取，而上报所有n＝P个端口上的测量量。因为UE对P个端口进行测量，相比于测量P个多端口的导频资源，UE复杂度降低。
可选地，该方法还包括：
接收用户设备在所述至少一个P端口第一导频资源的全部或部分端口进行测量后上报的信息；以及
根据所述用户设备上报的信息，从所述至少一个P端口第一导频资源的各端口上所采用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
可选地，所述用户设备上报的信息是所述用户设备根据在所述至少一个P端口第一导频资源的所述全部或部分端口的测量结果生成的。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量测量值和/或信道状态信息测量值最高的端口的标识信息；或者
按参考信号接收功率和/或参考信号接收质量测量值和/或信道状态信息测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
所述P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
基于上述任意方法实施例，可选地，所述基站还配置有至少一个第二导频资源，该方法还包括：
采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频 资源上的导频信号进行波束赋形；以及
在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
一种MIMO系统中的导频发送方法，该方法包括：
分别对基站配置的P个第一导频资源上的导频信号进行波束赋形，不同第一导频资源上采用不同的波束赋形矩阵，P为不小于2的整数；以及
分别在所述P个第一导频资源上发送经过波束赋形的导频信号。
为实现波束在垂直方向的动态调整，现有的方案是将垂直维度的波束赋形向量的反馈与水平维度的信道反馈结合在一起，因此，eNB需要配置的导频资源的开销大。而本发明实施例提供的技术方案，不是将垂直维度的波束赋形向量的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，这些第一导频资源仅用于进行波束赋形矩阵的反馈从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
作为一个非限制性的实施例，eNB配置P个多端口的导频资源给UE，eN在不同的导频资源上采用不同的波束赋形。UE在配置的P个导频资源上进行信道测量，选取其中测量结果最佳的n个导频资源，n为大于等于1的整数，然后将选取的导频资源的信息反馈给eNB。eNB根据得到的UE选取的n个导频资源的信息来响应进行信道赋形。其中，导频资源上的信道测量可以是参考信号接收功率(reference symbol received power，简称RSRP)，或者是参考信号接收质量(reference symbol received quality，简称RSRQ)，也可以是信道状态信息(Channel state information)。UE在选取n个导频资源时候，较佳的，可以选取n个测量结果最佳的导频资源。UE反馈的n个导频资源的信息可以有多种实现方式，比如选取最佳的n＝1导频资源并上报其资源索引，或者选取n＜P个导频资源并上报选取资源的索引，或者同时反馈n＜P个导频资源上的测量结果。这样UE不需要上报P个导频资源上的信道测量，而是只上报n＜P个选取的导频资源的索引，减小了上行反馈开销。
可选地，该方法还包括：
接收用户设备在所述P个第一导频资源上进行测量后上报的信息；以及
根据所述用户设备上报的信息，从所述P个第一导频资源上所使用的波 束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
可选地，所述用户设备上报的信息是所述用户设备根据在所述P个第一导频资源上的测量结果生成的。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的第一导频资源的标识信息；或者
按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L个第一导频资源的标识信息，L为小于P的整数；或者
所述P个第一导频资源上的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
基于上述任意方法实施例，可选地，所述基站还配置有至少一个第二导频资源，该方法还包括：
采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频资源上的导频信号进行波束赋形；以及
在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
基于与方法同样的发明构思，本公开文本实施例提供一种MIMO系统中的导频发送装置，所述装置包括：
第一波束赋形模块，用于对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵，P为不小于2的整数；以及
第一导频信号发送模块，用于在所述至少一个P端口第一导频资源上发送经过波束赋形的导频信号。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，采用不同波束赋形矩阵在P端口第一导频资源的不同端口上进行波束赋形，实现波束赋形矩阵的反馈， 进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减少了导频资源的开销。
可选地，所述装置还包括：
第一测量上报信息接收模块，用于接收用户设备在所述至少一个P端口第一导频资源的全部或部分端口进行测量后上报的信息；以及
第一波束赋形矩阵选择模块，用于根据所述用户设备上报的信息，从所述P端口第一导频资源的各端口上所采用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
可选地，所述用户设备上报的信息是所述用户设备根据在所述至少一个P端口第一导频信号的全部或部分端口上的测量结果生成的。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的端口的标识信息；或者
按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
所述P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
基于上述任意装置实施例，可选地，所述基站还配置有至少一个第二导频资源，所述装置还包括：
第二波束赋形模块，用于采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频资源上的导频信号进行波束赋形；以及
第二导频信号发送模块，用于在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
基于与方法同样的发明构思，本公开文本实施例还提供一种基站，多输入多输出系统中，该基站配置有至少一个P端口第一导频资源，P为不小于2的整数，该基站包括：
处理器，该处理器被配置为执行具备下列计算机程序的代码：对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵，P为不小于2的整数；在所述至少一个P端口第一导频资源上发送经过波束赋形的导频信号；以及
存储器，该存储器被配置为保存上述计算机程序的代码。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，采用不同波束赋形矩阵在P端口第一导频资源的不同端口上进行波束赋形，实现波束赋形矩阵的反馈，进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减少了导频资源的开销。
基于与方法同样的发明构思，本发明实施例还提供一种MIMO系统中的导频发送装置，所述装置包括：
第三波束赋形模块，用于分别对基站配置的P个第一导频资源上的导频信号进行波束赋形，不同第一导频资源上采用不同的波束赋形矩阵，P为不小于2的整数；
第三导频信号发送模块，用于分别在所述P个第一导频资源上发送经过波束赋形的导频信号。
本发明实施例提供的装置，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行垂直或水平波束赋形矩阵的反馈，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
可选地，所述装置还包括：
第二测量上报信息接收模块，用于接收用户设备在所述P个第一导频资源进行测量后上报的信息；以及
第二波束赋形矩阵选择模块，用于根据所述用户设备上报的信息，从所述P个第一导频资源上所使用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
可选地，所述用户设备上报的信息是所述用户设备根据在所述P个第一导频资源上的测量结果生成的。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的第一导频资源的标识信息；或者
按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L个第一导频资源的标识信息，L为小于P的整数；或者
所述P个第一导频资源上的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
基于上述任意装置实施例，可选地，所述基站还配置有至少一个第二导频资源，所述装置还包括：
第四波束赋形模块，用于采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频资源上的导频信号进行波束赋形；
第四导频信号发送模块，用于在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
基于与方法同样的发明构思，本公开文本实施例提供一种基站，多输入多输出系统中，该基站配置有P个第一导频资源，P为不小于2的整数，该基站包括：
处理器，该处理器被配置为执行具备下列功能的计算机程序：分别对所述基站配置的P个第一导频资源上的导频信号进行波束赋形，不同第一导频资源上采用不同的波束赋形矩阵；分别在所述P个第一导频资源上发送经过波束赋形的导频信号；
存储器，该存储器被配置为保存上述计算机程序的代码。
本发明实施例提供的基站，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行垂直或水平波束赋形矩阵的反馈，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
一种MIMO系统中的导频测量方法，包括：
在基站配置的至少一个P端口第一导频资源的全部或部分端口上进行测量，P为不小于2的整数；以及
在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，实现波束赋形矩阵的反馈，进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减少了导频资源的开销。
可选地，在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报，包括：
根据在所述至少一个P端口第一导频资源的所述全部或部分端口上的测量结果，生成测量上报信息；以及
向所述基站发送所述测量上报信息。
本公开文本实施例提供的技术方案，不需要反馈每次测量到的测量结果，只需要反馈根据至少一个P端口第一导频资源上的测量结果生成的测量上报信息，因此降低了上行反馈开销。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的端口的标识信息；或者
按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
所述P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量测量值。
一种MIMO系统中的导频测量方法，包括：
在基站配置的P个第一导频资源上分别进行测量P为不小于2的整数；以及
在所述P个第一导频资源上进行测量后上报。
本发明实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行垂直或水平波束赋形矩阵的反馈，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
可选地，在所述P个第一导频资源上进行测量后上报，包括：
根据在所述P个第一导频资源上的测量结果，生成测量上报信息；以及
向所述基站发送所述测量上报信息。
本公开文本实施例提供的技术方案，不需要反馈每次测量到的测量结果，只需要反馈根据在第一导频资源的全部或部分端口上的测量结果生成的测量上报信息，因此降低了上行反馈开销。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的第一导频资源的标识信息；或者
按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L个第一导频资源的标识信息，L为小于P的整数；或者
所述P个第一导频资源上的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
基于与方法同样的发明构思，本公开文本实施例还提供一种MIMO系统中的导频测量装置，包括：
第一导频测量模块，用于在基站配置的至少一个P端口第一导频资源的全部或部分端口上进行测量，P为不小于2的整数；以及
第一测量上报模块，用于在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，实现波束赋形矩阵的反馈，进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减 少了导频资源的开销。
可选地，所述第一测量上报模块具体用于：
根据在所述至少一个P端口第一导频资源的所述全部或部分端口上的测量结果，生成测量上报信息；向所述基站发送所述测量上报信息。
基于上述任意装置实施例，可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的端口的标识信息；或者
按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
所述P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
基于与方法同样的发明构思，本公开文本实施例还提供一种用户设备，包括：
处理器，该处理器被配置为执行具备下列功能的计算机程序：在基站配置的至少一个P端口第一导频资源的全部或部分端口上进行测量，P为不小于2的整数；在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报；以及
存储器，该存储器被配置为保存上述计算机程序的代码。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，实现波束赋形矩阵的反馈，进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减少了导频资源的开销。
基于与方法同样的发明构思，本发明实施例还提供一种MIMO系统中的导频测量装置，该装置包括：
第二导频测量模块，用于在基站配置的P个第一导频资源上分别进行测量，P为不小于2的整数；以及 第二测量上报模块，用于在所述P个第一导频资源上进行测量后上报。
本发明实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
可选地，第二测量上报模块具体用于：
根据在所述P个第一导频资源上的测量结果，生成测量上报信息；以及
向所述基站发送所述测量上报信息。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的第一导频资源的标识信息；或者
按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L个第一导频资源的标识信息，L为小于P的整数；或者
所述P个第一导频资源上的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
基于与方法同样的发明构思，本发明实施例还提供一种用户设备，包括：
处理器，该处理器被配置为执行具备下列功能的计算机程序：在基站配置的P个第一导频资源上分别进行测量，P为不小于2的整数；在所述P个第一导频资源上进行测量后上报；以及
存储器，该存储器被配置为保存上述计算机程序的代码。
本发明实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
附图说明
图1为本公开文本实施例提供的第一种导频发送方法的流程图；
图2为本公开文本实施例提供的第二种导频发送方法的流程图；
图3为本公开文本实施例提供的第一种导频测量方法的流程图；
图4为本公开文本实施例提供的第二种导频测量方法的流程图；
图5a～图5h为本公开文本实施例提供的常规循环前缀下的单端口第一导频资源的示意图；
图6a～图6h为本公开文本实施例提供的扩展循环前缀下的单端口第一导频资源的示意图；
图7为本公开文本实施例提供的第一种导频发送装置的示意图；
图8为本公开文本实施例提供的第二种导频发送装置的示意图；
图9为本公开文本实施例提供的第一种导频测量装置的示意图；以及
图10为本公开文本实施例提供的第二种导频测量装置的示意图。
具体实施方式
下面结合附图和实施例，对本公开文本的具体实施方式做进一步描述。以下实施例仅用于说明本公开文本，但不用来限制本公开文本的范围。
为使本公开文本实施例的目的、技术方案和优点更加清楚，下面将结合本公开文本实施例的附图，对本公开文本实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开文本的一部分实施例，而不是全部的实施例。基于所描述的本公开文本的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开文本保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开文本所属领域内具有一般技能的人士所理解的通常意义。本公开文本专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也相应地改变。
下面将结合附图，对本公开文本实施例提供的技术方案进行详细说明， 所举实例只用于解释本公开文本，并非用于限定本公开文本的范围。
MIMO系统中，基站配置有P个K端口第一导频资源，P为不小于2的整数，K为小于基站的二维天线阵列的行数或列数的整数。当然，如本领域技术人员可以理解的，K的取值并不局限于小于基站的二维天线阵列的行数或列数的整数，也可以根据需要选取其他合适的取值。不排除的，不同第一导频资源的端口数量可以相同也可以不同。其中，一个K端口第一导频资源，是指一组时频资源。P的取值与配置给用户设备的波束赋形矩阵的数量有关。可选地，P的取值与配置给用户设备的波束赋形矩阵的数量相同。如果波束赋形矩阵用于在垂直维度进行波束赋形，那么，K小于基站的二维天线阵列的列数，如果波束赋形矩阵用于在水平维度进行波束赋形，那么，K小于基站的二维天线阵列的行数。当然，如本领域技术人员可以理解的，K的取值并不局限于小于基站的二维天线阵列的行数，也可以根据需要选取其他合适的取值。应当指出的是，该应用场景中的MIMO系统可以但不仅限于是3D/FD MIMO系统，也可以是其他在垂直维度设置有天线的MIMO系统。
基于这样的场景，本公开文本实施例提供的一种MIMO系统中的导频发送方法如图1所示，具体包括如下操作：
步骤100、分别对上述基站配置的P个K端口第一导频资源上的导频信号进行波束赋形，不同第一导频资源上采用不同的波束赋形矩阵。这里，K的取值为大于等于1的正整数。
即，不同K端口第一导频资源上，采用不同的波束赋形矩阵进行波束赋形。
步骤110、分别在上述P个K端口第一导频资源上向UE发送经过波束赋形的导频信号。
本公开文本各个实施例中，导频信号可以但不仅限于是CSI-RS、小区专属参考信号(Cell-specific Reference Signal，CRS)等等。
上述处理过程可以但不仅限于由基站实现。
上述处理过程适用于波束赋形在垂直方向的动态调整，当然也适用于波束赋形在水平方向的动态调整。
本公开文本的各个实施例中，波束赋形的一个特殊情况为采用波束赋形 矩阵。
基于上述应用场景，为实现波束在垂直方向的动态调整，现有的方案是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，因此，eNB需要配置P个M端口的导频资源，其中，P为垂直维度赋形矩阵的数量，M为二维天线阵列的列数。而本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行(垂直或水平)波束赋形矩阵的反馈，因此所配置的第一导频资源的端口数可以小于二维天线阵列的行数或列数，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
本公开文本下列各实施例中以垂直波束赋形矩阵的选择为例进行说明，本公开文本的方法同样可以用于水平波束赋形矩阵的选择，方法相同，不再赘述。
本公开文本实施例中，可选地，还包括：接收UE在上述P个K端口第一导频资源上进行测量后上报的信息；根据该UE上报的信息，从上述P个K端口第一导频资源上所使用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给该UE的下行信号进行波束赋形。
本公开文本实施例中，UE上报的信息可以但不仅限于是该UE根据在上述P个K端口第一导频资源上的测量结果生成的。当然，UE上报的信息也可以就是在P个K端口第一导频资源上的测量结果。
其中，测量结果可以但不仅限于是参考信号接收功率(Reference Signal Receiving Power，RSRP)和/或参考信号接收质量(Reference Signal Receiving Quality，RSRQ)和/或信道状态信息测量值。以RSRP和/或RSRQ测量值为例，测量上报信息可以但不仅限于以下任一种：
RSRP和/或RSRQ测量值最高的K端口第一导频资源的标识信息；
按RSRP和/或RSRQ测量值降序排列的前L个K端口第一导频资源的标识信息，L为小于P的整数，其中，反馈的L个K端口第一导频资源的标识信息按照对应的RSRP和/或RSRQ的升序或降序排列；
P个K端口第一导频资源上的RSRP和/或RSRQ测量值。可选地，反馈的P个K端口第一导频资源上的RSRQ和/或RSRQ测量值升序或降序排列。
其中，K端口第一导频资源的标识信息可以但不仅限于是K端口第一导频资源的索引。
本公开文本实施例中，从上述P个垂直波束赋形矩阵中选择至少一个的方式有多种，下面例举其中几种。
如果测量上报信息包括RSRP和/或RSRQ测量值最高的K端口第一导频资源的标识信息，则选择该标识信息对应的K端口第一导频资源上所使用的垂直波束赋形矩阵。
如果测量上报信息包括按RSRP和/或RSRQ测量值降序排列的前L个K端口第一导频资源的标识信息，则可以从这些标识信息对应的K端口第一导频资源上所使用的垂直波束赋形矩阵中选择至少一个。
如果测量上报信息包括P个K端口第一导频资源上的RSRP和/或RSRQ测量值，则按照RSRP和/或RSRQ测量值排序，从对应的K端口第一导频资源上所使用的垂直波束赋形矩阵中选择至少一个。
在明确利用选择的至少一个垂直波束赋形矩阵对发送给该UE的下行信号进行垂直波束赋形的前提下，结合上述举例说明，本领域技术人员无需付出创造性劳动，即可获得其他选择方式。
基于上述任意方法实施例，在选择出至少一个垂直波束赋形矩阵后，可以用选择出的垂直波束赋形矩阵解决其他问题，例如进行3D/FD MIMO的波束赋形、预编码等等。
以利用选择出至少一个垂直波束赋形矩阵进行3D/FD MIMO的波束赋形为例，基站还配置有至少一个第二导频资源，相应的实现方式可以是：采用选择的至少一个垂直波束赋形矩阵对基站配置的至少一个第二导频资源上的导频信号进行垂直波束赋形(即采用选择的至少一个垂直波束赋形矩阵对发送给上述UE的下行信号进行垂直波束赋形)；在基站配置的至少一个第二导频资源上发送经过垂直波束赋形的导频信号。
采用选择的垂直波束赋形矩阵在第二导频资源上进行垂直波束赋形的实现方式有多种，本公开文本无法一一例举，仅以几个优选实施例进行举例说 明。
假设基站选择了一个垂直波束赋形矩阵，则采用选择的这个垂直波束赋形矩阵对所有第二导频资源上的导频信号进行垂直波束赋形。UE在第二导频资源上进行测量，并反馈测量结果。根据UE反馈的测量结果在3D/FD MIMO天线阵列上进行波束赋形，不需要为3D/FD MIMO天线阵列的波束赋形进行进一步的处理。
假设基站配置了两个第二导频资源，且基站选择了两个垂直波束赋形矩阵，则基站分别采用不同的垂直波束赋形矩阵对不同第二导频资源上的导频信号进行垂直波束赋形。UE分别在这两个第二导频资源上进行测量，并反馈在这两个第二导频资源上测量的测量结果。根据UE分别对这两个第二导频资源进行测量的反馈结果，选择3D/FD MIMO天线阵列的波束赋形方案。
MIMO系统中，基站配置有至少一个P端口第一导频资源，P为不小于2的整数。其中，P端口第一导频资源，是指一组时频资源。P的取值与配置给用户设备的波束赋形矩阵的数量有关。可选地，P的取值与配置给用户设备的波束赋形矩阵的数量相同。配置的P端口第一导频资源的数量小于二维天线矩阵的行数或者列数。应当指出的是，该应用场景中的MIMO系统可以但不仅限于是3D/FD MIMO系统，也可以是其他在垂直维度设置有天线的MIMO系统。
下面以配置一个P端口第一导频资源为例进行说明，配置两个或两个以上P端口第一导频资源的实现方式可以参照下面的描述，不再赘述。
基于这样的场景，本公开文本实施例提供的另一种MIMO系统中的导频发送方法如图2所示，具体包括如下操作：
步骤200、对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，配置的第一导频资源的数量小于基站的二维天线阵列的行数或列数，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵，P为不小于2的整数。
步骤210、在上述P端口第一导频资源上发送经过波束赋形的导频信号。
上述处理过程可以但不仅限于由基站实现。
上述处理过程适用于波束赋形在垂直方向的动态调整，当然也适用于波 束赋形在水平方向的动态调整。
基于上述应用场景，为实现波束在垂直方向的动态调整，现有的方案是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，因此，eNB需要配置P个M端口的导频资源。而本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，采用不同波束赋形矩阵在P端口第一导频资源的不同端口上进行波束赋形，实现波束赋形矩阵的反馈，进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减少了导频资源的开销。
可选地，本公开文本实施例提供的技术方案还包括：
接收用户设备在所述至少一个P端口第一导频资源的全部或部分端口进行测量后上报的信息；以及
根据所述用户设备上报的信息，从所述至少一个P端口第一导频资源的各端口上所采用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
本公开文本实施例中，UE上报的信息可以但不仅限于是该UE根据在上述P端口第一导频资源的全部或部分端口上的测量结果生成的。当然，UE上报的信息也可以就是在P端口第一导频资源上的测量结果。
其中，测量结果可以但不仅限于是RSRP和/或RSRQ测量值。以RSRP和/或RSRQ测量值为例，测量上报信息可以但不仅限于以下任一种：
RSRP和/或RSRQ测量值最高的端口的标识信息；
按RSRP和/或RSRQ测量值降序排列的前L’个端口的标识信息，L’为小于上述全部或部分端口数的整数，其中，反馈的L’个端口的标识信息按照对应的RSRP和/或RSRQ的升序或降序排列；
P端口第一导频资源的上述全部或部分端口的RSRP和/或RSRQ测量值。可选地，反馈的P端口第一导频资源的上述全部或部分端口的RSRP和/或RSRQ测量值升序或降序排列。
其中，P端口第一导频资源的端口的标识信息可以但不仅限于是端口的索引。
本公开文本实施例中，从上述P个垂直波束赋形矩阵中选择至少一个的方式有多种，下面例举其中几种。
如果测量上报信息包括RSRP和/或RSRQ测量值最高的端口的标识信息，则选择该标识信息对应的端口上所使用的垂直波束赋形矩阵。
如果测量上报信息包括按RSRP和/或RSRQ测量值降序排列的前L’个端口的标识信息，则可以从这些标识信息对应的端口上所使用的垂直波束赋形矩阵中选择至少一个。
如果测量上报信息包括P端口第一导频资源的上述全部或部分端口的RSRP和/或RSRQ测量值，则按照RSRP和/或RSRQ测量值排序，从对应的端口上所使用的垂直波束赋形矩阵中选择至少一个。在明确利用选择的至少一个垂直波束赋形矩阵对发送给该UE的下行信号进行垂直波束赋形的前提下，结合上述举例说明，本领域技术人员无需付出创造性劳动，即可获得其他选择方式。
基于图2的上述任意方法实施例，在选择出至少一个垂直波束赋形矩阵后，可以用选择出的垂直波束赋形矩阵解决其他问题，例如进行3D/FD MIMO的波束赋形、预编码等等。其具体实现方式可以参照上述实施例的描述，此处不再赘述。
本公开文本实施例提供一种MIMO系统中的导频测量方法，如图3所示，该方法具体包括如下操作：
步骤300、在基站配置的P个K端口第一导频资源上分别进行测量，不同第一导频资源上采用不同波束赋形矩阵进行波束赋形，P为不小于2的整数，K为小于基站二维天线阵列的行数或列数的整数。当然，如本领域技术人员可以理解的，K的取值并不局限于小于基站的二维天线阵列的行数或列数的整数，也可以根据需要选取其他合适的取值。不同第一导频资源的端口数量可以相同，也可以不同。
其中，可以根据预先的约定获知基站配置的P个K端口第一导频资源，也可以通过高层信令等方式获知额基站配置的P个K端口第一导频资源，本公开文本对获知P个K端口第一导频资源的具体方式不作限定。
其中，需要获知各个K端口第一导频资源的标识信息，子帧偏移量，周 期等等。
步骤310、在上述P个K端口第一导频资源上进行测量后上报。
本公开文本的各个实施例中，测量结果可以是以下至少一项：RSRP测量值、RSRQ测量值、CSI等等。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行垂直或水平波束赋形矩阵的反馈，因此所配置的第一导频资源的端口数可以小于二维天线阵列的行数或列数，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
可选地，在所述P个K端口第一导频资源上进行测量后上报，包括：
根据在所述P个K端口第一导频资源上的测量结果，生成测量上报信息；以及
向所述基站发送所述测量上报信息。
本公开文本实施例提供的技术方案，不需要反馈每次测量到的测量结果，只需要反馈根据P个K端口第一导频资源上的测量结果生成的测量上报信息，因此降低了上行反馈开销。
上述导频测量反馈方法适用与上述第一种应用场景，与图1所示的方法配合实施。应当指出的是，上述导频测量反馈方法不仅限于上述第一种应用场景。
上述步骤310的一种优选实现方式为：根据预定时间段内在上述P个K端口第一导频资源上的测量结果，生成测量上报信息。
如果测量结果为RSRP和/或RSRQ测量值，测量上报信息具体包括的内容可以参照上述实施例的描述，此处不再赘述。
本公开文本实施例提供的另一种MIMO系统中的导频测量方法，如图4所示，该方法具体包括如下操作：
步骤400、在基站配置的至少一个P端口第一导频资源的全部或部分端口上进行测量，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵进行波束赋形，配置的第一导频资源的数量小于基站的二维天线阵列的行数或列数，P为不小于2的整数。
其中，可以根据预先的约定获知基站配置的P端口第一导频资源，也可以通过高层信令等方式获知额基站配置的P端口第一导频资源，本公开文本对获知P端口第一导频资源的具体方式不作限定。
其中，需要获知P端口第一导频资源的标识信息，子帧偏移量，周期等等。
步骤410、在上述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，采用不同波束赋形矩阵在P端口第一导频资源的不同端口上进行波束赋形，实现波束赋形矩阵的反馈，进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减少了导频资源的开销。
可选地，在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报，包括：
根据在所述至少一个P端口第一导频资源的所述全部或部分端口上的测量结果，生成测量上报信息；以及
向所述基站发送所述测量上报信息。
本公开文本实施例提供的技术方案，不需要反馈每次测量到的测量结果，只需要反馈根据在第一导频资源的全部或部分端口上的测量结果生成的测量上报信息，因此降低了上行反馈开销。
另外，如果基站仅配置了一个P端口第一导频信道，那么，UE不需要具备处理多个导频资源的能力。
上述步骤410的一种优选实现方式为：根据预定时间段内在上述P端口第一导频资源的全部或部分端口上的测量结果，生成测量上报信息。
如果测量结果为RSRP和/或RSRQ测量值，测量上报信息具体包括的内容可以参照上述实施例的描述，此处不再赘述。
仍以上述第一种场景为例，对基站和UE配合实施本公开文本实施例的实现方式进行说明。
假设基站有一组垂直波束赋形矩阵，比如可以写为{V1，V2，…VP}，且基站配置P个单端口或者多端口的第一导频资源。基站在不同的第一导频资源上使用不同的垂直波束赋形矩阵进行垂直波束赋形。例如，在第i个第一导频资源采用垂直波束赋形矩阵Vi进行垂直波束赋形。基站在经过垂直波束赋形后的第一导频资源向UE发送CSI-RS。UE测量每个第一导频资源，得到该第一导频资源上的RSRP测量值。然后UE根据各个第一导频资源上的RSRP测量值生成测量上报信息并发送给基站。基站接收到UE发送的测量上报信息之后，则可以根据收到的测量上报信息得到最优的垂直维度波束赋形矩阵的信息，可以是一个最优垂直波束赋形矩阵(比如，V1)或者是一组较优垂直波束赋形矩阵(比如{V1，V2})。
以单端口第一导频资源为例，常规循环前缀(normal cyclic prefix)下，基站配置的单端口第一导频资源如图5a～5h所示。其中，图5a所示的是在端口R15配置第一导频资源，图5b所示的是在端口R16配置第一导频资源，图5c所示的是在端口R17配置第一导频资源，图5d所示的是在端口R18配置第一导频资源，图5e所示的是在端口R19配置第一导频资源，图5f所示的是在端口R20配置第一导频资源，图5g所示的是在端口R21配置第一导频资源，图5h所示的是在端口R22配置第一导频资源。扩展循环前缀(extended cyclic prefix)下，基站配置的第一导频资源如图6a～6h所示。其中，图6a所示的是在端口R15配置第一导频资源，图6b所示的是在端口R16配置第一导频资源，图6c所示的是在端口R17配置第一导频资源，图6d所示的是在端口R18配置第一导频资源，图6e所示的是在端口R19配置第一导频资源，图6f所示的是在端口R20配置第一导频资源，图6g所示的是在端口R21配置第一导频资源，图6h所示的是在端口R22配置第一导频资源。
仍以上述第二种场景为例，对基站和UE配合实施本公开文本实施例的实现方式进行说明。
基站配置有一个P端口的第一导频资源。UE被配置在第一导频资源的L个端口进行RSRP测量。基站配置有一组垂直波束赋形矩阵，比如可以写为{V1，V2，…VP}。基站在该P端口第一导频资源内的每一个端口上采用不同的垂直波束赋形矩阵进行垂直波束赋形。例如，第i个端口采用垂直波束赋 形矩阵Vi进行垂直波束赋形。基站在经过垂直波束赋形后的第一导频资源向UE发送CSI-RS。UE测量第一导频资源的每个端口，得到该端口上的RSRP测量值。然后UE根据各个端口上的RSRP测量值生成测量上报信息并发送给基站。基站接收到UE发送的测量上报信息之后，则可以根据收到的测量上报信息得到最优的垂直波束赋形矩阵的信息，可以是一个最优垂直波束赋形矩阵(比如，V1)或者是一组较优垂直波束赋形矩阵(比如{V1，V2})。
相对于上一应用场景，第二种应用场景对应的实现方式进一步降低了导频开销。这是因为：LTE中的导频资源采用的是CDM/FDM的设计方式，每个导频端口都占据两个资源粒。在上述应用场景一的实现方式中，如果配置了P个单端口的第一导频资源，那么第一导频资源开销是2P个资源粒；如果配置了N个多端口的第一导频资源，那么第一导频资源的开销会更加大。相比起来，应用场景二的实现方式中，只需要P个资源粒，减少了至少一半的第一导频资源开销。
相对于上一应用场景，第二种应用场景对应的实现方式进一步降低了导频信令开销。上述应用场景一的实现方式中，P个第一导频资源需要P个高层信令，但是第二种应用场景的实现方式中只需要一个高层信令。
基于与方法同样的发明构思，本公开文本实施例提供一种MIMO系统中的导频发送装置，如图7所示，该装置包括：
第三波束赋形模块701，用于分别对基站配置的P个K端口第一导频资源上的导频信号进行波束赋形，不同第一导频资源上采用不同的波束赋形矩阵，P为不小于2的整数，K为小于所述基站的二维天线阵列的行数或列数的整数；以及
第三导频信号发送模块702，用于分别在所述P个K端口第一导频资源上向用户设备发送经过波束赋形的导频信号。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行垂直或水平波束赋形矩阵的反馈，因此所配置的第一导频资源的端口数可以小于二维天线阵列的行数或列数，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
可选地，该装置还包括：
第二测量上报信息接收模块，用于接收用户设备在所述P个K端口第一导频资源进行测量后上报的信息；以及
第二波束赋形矩阵选择模块，用于根据所述用户设备上报的信息，从所述P个K端口第一导频资源上所使用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
可选地，用户设备上报的信息可以但不仅限于是该UE根据在上述P个K端口第一导频资源上的测量结果生成的。当然，UE上报的信息也可以就是在P个K端口第一导频资源上的测量结果。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量测量值最高的K端口第一导频资源的标识信息；或者
按参考信号接收功率和/或参考信号接收质量测量值降序排列的前L个K端口第一导频资源的标识信息，L为小于P的整数；或者
所述P个K端口第一导频资源上的参考信号接收功率和/或参考信号接收质量测量值。
基于上述任意装置实施例，可选地，所述基站还配置有至少一个第二导频资源，所述装置还包括：
第四波束赋形模块，用于采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频资源上的导频信号进行波束赋形；以及
第四导频信号发送模块，用于在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
基于与方法同样的发明构思，本公开文本实施例提供一种基站，多输入多输出系统中，该基站配置有P个K端口第一导频资源，P为不小于2的整数，K为小于所述基站的二维天线阵列的行数或列数的整数，该基站包括：
处理器，该处理器被配置为执行具备下列功能的计算机程序：分别对所述基站配置的P个K端口第一导频资源上的导频信号进行波束赋形，不同第 一导频资源上采用不同的波束赋形矩阵；分别在所述P个K端口第一导频资源上向用户设备发送经过波束赋形的导频信号；以及
存储器，该存储器被配置为保存上述计算机程序的代码。
本公开文本实施例提供的基站，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行垂直或水平波束赋形矩阵的反馈，因此所配置的第一导频资源的端口数可以小于二维天线阵列的行数或列数，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
基于与方法同样的发明构思，本公开文本实施例还提供一种MIMO系统中的导频发送装置，如图8所示，该装置包括：
第一波束赋形模块801，用于对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，配置的第一导频资源的数量小于基站的二维天线阵列的行数或列数，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵，P为不小于2的整数；以及
第一导频信号发送模块802，用于在所述至少一个P端口第一导频资源上向用户设备发送经过波束赋形的导频信号。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行垂直或水平波束赋形矩阵的反馈，采用不同波束赋形矩阵在P端口第一导频资源的不同端口上进行波束赋形，实现垂直维度或水平维度的波束赋形矩阵的反馈，进而实现波束在垂直方向或水平方向的动态调整，较之现有技术大大减少了导频资源的开销。
可选地，该装置还包括：
第一测量上报信息接收模块，用于在所述至少一个P端口第一导频资源的全部或部分端口进行测量后上报的信息；以及
第一波束赋形矩阵选择模块，用于根据所述用户设备上报的信息，从所述P端口第一导频资源的各端口上所采用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
可选地，所述用户设备上报的信息是所述用户设备根据在所述P个K端口第一导频资源上的测量结果生成的。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量测量值最高的端口的标识信息；或者
按参考信号接收功率和/或参考信号接收质量测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
所述P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量测量值。
基于上述任意装置实施例，可选地，所述基站还配置有至少一个第二导频资源，所述装置还包括：
第二波束赋形模块，用于采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频资源上的导频信号进行波束赋形；以及
第二导频信号发送模块，用于在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
基于与方法同样的发明构思，本公开文本实施例还提供一种基站，多输入多输出系统中，该基站配置有至少一个P端口第一导频资源，P为不小于2的整数，该基站包括：
处理器，该处理器被配置为执行具备下列计算机程序的代码：对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，配置的第一导频资源的数量小于基站的二维天线阵列的行数或列数，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵，P为不小于2的整数；在所述至少一个P端口第一导频资源上向用户设备发送经过波束赋形的导频信号；以及
存储器，该存储器被配置为保存上述计算机程序的代码。
本公开文本实施例提供的基站，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行垂直或水平波束赋形矩阵的反馈，采用不同波束赋形矩 阵在P端口第一导频资源的不同端口上进行波束赋形，实现垂直维度或水平维度的波束赋形矩阵的反馈，进而实现波束在垂直方向或水平方向的动态调整，较之现有技术大大减少了导频资源的开销。
基于与方法同样的发明构思，本公开文本实施例还提供一种MIMO系统中的导频测量装置，如图9所示，包括：
第二导频测量模块901，用于在基站配置的P个K端口第一导频资源上分别进行测量，不同第一导频资源上分别采用不同的波束赋形矩阵进行波束赋形，P为不小于2的整数，K为小于所述基站的二维天线阵列的行数或列数的整数；以及
第二测量上报模块902，用于在所述P个K端口第一导频资源上进行测量后上报。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，因此所配置的第一导频资源的端口数可以小于二维天线阵列的行数或列数，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
可选地，第二测量上报模块902具体用于：
根据在所述P个K端口第一导频资源上的测量结果，生成测量上报信息；以及
向所述基站发送所述测量上报信息。
本公开文本实施例提供的技术方案，不需要反馈每次测量到的测量结果，只需要反馈根据P个K端口第一导频资源上的测量结果生成的测量上报信息，因此降低了上行反馈开销。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量测量值最高的K端口第一导频资源的标识信息；或者
按参考信号接收功率和/或参考信号接收质量测量值降序排列的前L个K端口第一导频资源的标识信息，L为小于P的整数；或者
所述P个K端口第一导频资源上的参考信号接收功率和/或参考信号接收质量测量值。
基于与方法同样的发明构思，本公开文本实施例还提供一种用户设备，包括：
处理器，该处理器被配置为执行具备下列功能的计算机程序：在基站配置的P个K端口第一导频资源上分别进行测量，不同第一导频资源上分别采用不同的波束赋形矩阵进行波束赋形，P为不小于2的整数，K为小于所述基站的二维天线阵列的行数或列数的整数；在所述P个K端口第一导频资源上进行测量后上报；以及
存储器，该存储器被配置为保存上述计算机程序的代码。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P个第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，因此，配置的第一导频资源的端口数可以小于二维天线阵列的行数或列数，从而减少了导频资源的开销。当配置P个单端口第一导频资源时，导频资源的开销将大大降低。
基于与方法同样的发明构思，本公开文本实施例还提供一种MIMO系统中的导频测量上报装置，如图10所示，该装置包括：
第一导频测量模块1001，用于在基站配置的至少一个P端口第一导频资源的全部或部分端口上进行测量，配置的第一导频资源的数量小于基站的二维天线阵列的行数或列数，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵进行波束赋形，P为不小于2的整数；以及
第一测量上报模块1002，用于在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，采用不同波束赋形矩阵在P端口第一导频资源的不同端口上进行波束赋形，实现波束赋形矩阵的反馈，进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减少了导频资源的开销。
可选地，所述第一测量上报模块1002具体用于：
根据在所述至少一个P端口第一导频资源的所述全部或部分端口上的测量结果，生成测量上报信息；向所述基站发送所述测量上报信息。
本公开文本实施例提供的技术方案，不需要反馈每次测量到的测量结果，只需要反馈根据在P端口第一导频资源的全部或部分端口上的测量结果生成的测量上报信息，因此降低了上行反馈开销。
可选地，所述测量结果为参考信号接收功率和/或参考信号接收质量测量值；所述测量上报信息包括：
参考信号接收功率和/或参考信号接收质量测量值最高的端口的标识信息；或者
按参考信号接收功率和/或参考信号接收质量测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
所述至少一个P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量测量值。
基于与方法同样的发明构思，本公开文本实施例还提供一种用户设备，包括：
处理器，该处理器被配置为执行具备下列功能的计算机程序：在基站配置的至少一个P端口第一导频资源的全部或部分端口上进行测量，配置的第一导频资源的数量小于基站的二维天线阵列的行数或列数，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵进行波束赋形，P为不小于2的整数；在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报；以及
存储器，该存储器被配置为保存上述计算机程序的代码。
本公开文本实施例提供的技术方案，不是将垂直维度的波束赋形矩阵的反馈与水平维度的信道反馈结合在一起，而是配置P端口第一导频资源，该第一导频资源仅用于进行波束赋形矩阵的反馈，采用不同波束赋形矩阵在P端口第一导频资源的不同端口上进行波束赋形，实现波束赋形矩阵的反馈，进而实现波束(在垂直方向或水平方向)的动态调整，较之现有技术大大减少了导频资源的开销。
本领域内的技术人员应明白，本公开文本的实施例可提供为方法、系统、或计算机程序产品。因此，本公开文本可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开文本可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开文本是参照根据本公开文本实施例的方法、设备(系统)、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。
尽管已描述了本公开文本的优选实施例，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公开文本范围的所有变更和修改。
显然，本领域的技术人员可以对本公开文本进行各种改动和变型而不脱离本公开文本的精神和范围。这样，倘若本公开文本的这些修改和变型属于本公开文本权利要求及其等同技术的范围之内，则本公开文本也意图包含这 些改动和变型在内。

Claims (36)

  1. 一种多输入多输出系统中的导频发送方法，包括：
    对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵，P为不小于2的整数；以及
    在所述至少一个P端口第一导频资源上发送经过波束赋形的导频信号。
  2. 根据权利要求1所述的方法，还包括：
    接收用户设备在所述至少一个P端口第一导频资源的全部或部分端口进行测量后上报的信息；以及
    根据所述用户设备上报的信息，从所述至少一个P端口第一导频资源的各端口上所采用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形向量对发送给所述用户设备的下行信号进行波束赋形。
  3. 根据权利要求2所述的方法，其中，所述用户设备上报的信息是所述用户设备根据在所述至少一个P端口第一导频资源的所述全部或部分端口的测量结果生成的。
  4. 根据权利要求3所述的方法，其中，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；
    其中，所述测量上报信息包括：
    参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的端口的标识信息；或者
    按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
    所述P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
  5. 根据权利要求2～4任一项所述的方法，其中，所述基站还配置有至少一个第二导频资源，
    其中，该方法还包括：
    采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频资源上的导频信号进行波束赋形；以及
    在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
  6. 一种多输入多输出系统中的导频发送方法，包括：
    分别对基站配置的P个第一导频资源上的导频信号进行波束赋形，不同第一导频资源上采用不同的波束赋形矩阵，P为不小于2的整数；以及
    分别在所述P个第一导频资源上发送经过波束赋形的导频信号。
  7. 根据权利要求6所述的方法，还包括：
    接收用户设备在所述P个第一导频资源上进行测量后上报的信息；以及
    根据所述用户设备上报的信息，从所述P个第一导频资源上所使用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
  8. 根据权利要求7所述的方法，其中，所述用户设备上报的信息是所述用户设备根据在所述P个第一导频资源上的测量结果生成的。
  9. 根据权利要求8所述的方法，其中，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；
    其中，所述测量上报信息包括：
    参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的第一导频资源的标识信息；或者
    按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L个第一导频资源的标识信息，L为小于P的整数；或者
    所述P个第一导频资源上的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
  10. 根据权利要求7～9任一项所述的方法，其中，所述基站还配置有至少一个第二导频资源，
    其中，该方法还包括：
    采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频资源上的导频信号进行波束赋形；以及
    在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
  11. 一种多输入多输出系统中的导频测量方法，包括：
    在基站配置的至少一个P端口第一导频资源的全部或部分端口上进行测量，P为不小于2的整数；以及
    在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报。
  12. 根据权利要求11所述的方法，其中，在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报，包括：
    根据在所述至少一个P端口第一导频资源的所述全部或部分端口上的测量结果，生成测量上报信息；以及
    向所述基站发送所述测量上报信息。
  13. 根据权利要求12所述的方法，其中，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；
    其中，所述测量上报信息包括：
    参考信号接收功率和/或参考信号接收质量测量值和/或信道状态信息最高的端口的标识信息；或者
    按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
    所述P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
  14. 一种多输入多输出系统中的导频测量方法，包括：
    在基站配置的P个第一导频资源上分别进行测量，P为不小于2的整数；以及
    在所述P个第一导频资源上进行测量后上报。
  15. 根据权利要求14所述的方法，其中，在所述P个第一导频资源上进行测量后上报，包括：
    根据在所述P个第一导频资源上的测量结果，生成测量上报信息；以及
    向所述基站发送所述测量上报信息。
  16. 根据权利要求15所述的方法，其中，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；
    其中，所述测量上报信息包括：
    参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的第一导频资源的标识信息；或者
    按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L个第一导频资源的标识信息，L为小于P的整数；或者
    所述P个第一导频资源上的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
  17. 一种多输入多输出系统中的导频发送装置，包括：
    第一波束赋形模块，用于对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，同一个第一导频资源的不同端口上采用不同的波束赋形矩阵，P为不小于2的整数；以及
    第一导频信号发送模块，用于在所述至少一个P端口第一导频资源上发送经过波束赋形的导频信号。
  18. 根据权利要求17所述的装置，还包括：
    第一测量上报信息接收模块，用于接收用户设备在所述至少一个P端口第一导频资源的全部或部分端口进行测量后上报的信息；以及
    第一波束赋形矩阵选择模块，用于根据所述用户设备上报的信息，从所述P端口第一导频资源的各端口上所采用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
  19. 根据权利要求18所述的装置，其中，所述用户设备上报的信息是所述用户设备根据在所述至少一个P端口第一导频信号的全部或部分端口上的测量结果生成的。
  20. 根据权利要求19所述的装置，其中，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；
    其中，所述测量上报信息包括：
    参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的端口的标识信息；或者
    按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
    所述P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
  21. 根据权利要求18～20任一项所述的装置，其中，所述基站还配置有至少一个第二导频资源，
    其中，所述装置还包括：
    第二波束赋形模块，用于采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频资源上的导频信号进行波束赋形；以及
    第二导频信号发送模块，用于在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
  22. 一种多输入多输出系统中的导频发送装置，包括：
    第三波束赋形模块，用于分别对基站配置的P个第一导频资源上的导频信号进行波束赋形，不同第一导频资源上采用不同的波束赋形矩阵，P为不小于2的整数；以及
    第三导频信号发送模块，用于分别在所述P个第一导频资源上发送经过波束赋形的导频信号。
  23. 根据权利要求22所述的装置，还包括：
    第二测量上报信息接收模块，用于接收用户设备在所述P个第一导频资源进行测量后上报的信息；以及
    第二波束赋形矩阵选择模块，用于根据所述用户设备上报的信息，从所述P个第一导频资源上所使用的波束赋形矩阵中选择至少一个波束赋形矩阵，以采用选择的至少一个波束赋形矩阵对发送给所述用户设备的下行信号进行波束赋形。
  24. 根据权利要求23所述的装置，其中，所述用户设备上报的信息是所述用户设备根据在所述P个第一导频资源上的测量结果生成的。
  25. 根据权利要求24所述的装置，其中，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；
    其中，所述测量上报信息包括：
    参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的第一导频资源的标识信息；或者
    按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L个第一导频资源的标识信息，L为小于P的整数；或者
    所述P个第一导频资源上的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
  26. 根据权利要求23～25任一项所述的装置，其中，所述基站还配置有至少一个第二导频资源，
    其中，所述装置还包括：
    第四波束赋形模块，用于采用选择的至少一个波束赋形矩阵对所述基站配置的至少一个第二导频资源上的导频信号进行波束赋形；
    第四导频信号发送模块，用于在所述基站配置的至少一个第二导频资源上发送经过波束赋形的导频信号。
  27. 一种多输入多输出系统中的导频测量装置，包括：
    第一导频测量模块，用于在基站配置的至少一个P端口第一导频资源的全部或部分端口上进行测量，P为不小于2的整数；以及
    第一测量上报模块，用于在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报。
  28. 根据权利要求27所述的装置，其中，所述第一测量上报模块根据在所述至少一个P端口第一导频资源的所述全部或部分端口上的测量结果，生成测量上报信息；向所述基站发送所述测量上报信息。
  29. 根据权利要求28所述的装置，其中，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；
    其中，所述测量上报信息包括：
    参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的端口的标识信息；或者
    按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L’个端口的标识信息，L’为小于所述全部或部分端口数的整数；或者
    所述P端口第一导频资源的所述全部或部分端口的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
  30. 一种多输入多输出系统中的导频测量装置，包括：
    第二导频测量模块，用于在基站配置的P个第一导频资源上分别进行测量，P为不小于2的整数；以及
    第二测量上报模块，用于在所述P个第一导频资源上进行测量后上报。
  31. 根据权利要求30所述的装置，其中，所述第二测量上报模块根据在所述P个第一导频资源上的测量结果，生成测量上报信息，并向所述基站发送所述测量上报信息。
  32. 根据权利要求31所述的装置，其中，所述测量结果为参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值；
    其中，所述测量上报信息包括：
    参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值最高的第一导频资源的标识信息；或者
    按参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值降序排列的前L个第一导频资源的标识信息，L为小于P的整数；或者
    所述P个第一导频资源上的参考信号接收功率和/或参考信号接收质量和/或信道状态信息测量值。
  33. 一种基站，包括：
    处理器；以及
    存储器，通过总线接口与所述处理器相连接，并且用于存储所述处理器在执行操作时所使用的程序和数据，
    当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的功能模块：
    第一波束赋形模块，用于对基站配置的至少一个P端口第一导频资源上的导频信号进行波束赋形，同一个第一导频资源的不同端口上采用不同 的波束赋形矩阵，P为不小于2的整数；以及
    第一导频信号发送模块，用于在所述至少一个P端口第一导频资源上发送经过波束赋形的导频信号。
  34. 一种基站，包括：
    处理器；以及
    存储器，通过总线接口与所述处理器相连接，并且用于存储所述处理器在执行操作时所使用的程序和数据，
    当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的功能模块：
    第一波束赋形模块，用于分别对基站配置的P个第一导频资源上的导频信号进行波束赋形，不同第一导频资源上分别采用不同的波束赋形矩阵，P为不小于2的整数；以及
    第一导频信号发送模块，用于分别在所述P个第一导频资源上发送经过波束赋形的导频信号。
  35. 一种用户设备，包括：
    处理器；以及
    存储器，通过总线接口与所述处理器相连接，并且用于存储所述处理器在执行操作时所使用的程序和数据，
    当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的功能模块：
    第一导频测量模块，用于在基站配置的至少一个P端口第一导频资源的全部或部分端口上进行测量，P为不小于2的整数；以及
    第一测量上报模块，用于在所述至少一个P端口第一导频资源的所述全部或部分端口上进行测量后上报。
  36. 一种用户设备，包括：
    处理器；以及
    存储器，通过总线接口与所述处理器相连接，并且用于存储所述处理器在执行操作时所使用的程序和数据，
    当处理器调用并执行所述存储器中所存储的程序和数据时，实现如下的 功能模块：
    第一导频测量模块，用于在基站配置的P个第一导频资源上分别进行测量，P为不小于2的整数；以及
    第一测量上报模块，用于在所述P个第一导频资源上进行测量后上报。
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CN112243246B (zh) * 2019-07-17 2022-04-29 成都华为技术有限公司 用于信道测量的接收参数的确定方法和装置

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