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WO2016155571A1 - 用于无线通信的装置和方法 - Google Patents

用于无线通信的装置和方法 Download PDF

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Publication number
WO2016155571A1
WO2016155571A1 PCT/CN2016/077360 CN2016077360W WO2016155571A1 WO 2016155571 A1 WO2016155571 A1 WO 2016155571A1 CN 2016077360 W CN2016077360 W CN 2016077360W WO 2016155571 A1 WO2016155571 A1 WO 2016155571A1
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Prior art keywords
reference signal
base station
feedback
spatial
spatial dimensions
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PCT/CN2016/077360
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English (en)
French (fr)
Inventor
李南希
陈晋辉
韦再雪
张欣
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Sony Corp
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Sony Corp
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Priority to EP16771326.2A priority Critical patent/EP3280071A4/en
Priority to US15/561,557 priority patent/US10911119B2/en
Priority to JP2017545625A priority patent/JP6939558B2/ja
Publication of WO2016155571A1 publication Critical patent/WO2016155571A1/zh
Anticipated expiration legal-status Critical
Priority to US17/141,234 priority patent/US20210159959A1/en
Ceased legal-status Critical Current

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    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • Embodiments of the present invention generally relate to the field of wireless communications, and in particular, to an apparatus and method for wireless communication at a base station side and a user equipment side, and more particularly, embodiments of the present invention relate to large scale multiple input multiple output (MIMO). Antenna technology in communication systems.
  • MIMO large scale multiple input multiple output
  • an apparatus for wireless communication comprising: one or more processors configured to separately perform downlink reference signals of a base station in a plurality of spatial dimensions based on an antenna configuration of a base station And configuring a control message including an indication that the base station transmits the downlink reference signal in a plurality of spatial dimensions, respectively, for the communication device served by the base station.
  • an apparatus for wireless communication comprising: one or more processors configured to: determine, based on a control message from a base station, that a base station transmits downlinks separately in a plurality of spatial dimensions a reference signal; and a phase response in response to the measurement indication by the base station The downlink reference signal in the spatial dimension is measured and the measurement feedback information in the corresponding spatial dimension is generated.
  • a method for wireless communication including: configuring, according to an antenna configuration of a base station, a downlink reference signal of a base station in multiple spatial dimensions; and generating a base station in multiple spaces A control message indicating an indication of the downlink reference signal is separately transmitted in dimension for the communication device served by the base station.
  • an apparatus for wireless communication comprising: determining, based on a control message from a base station, a base station transmitting a downlink reference signal in a plurality of spatial dimensions; and responsive to a measurement indication of the base station And measuring the downlink reference signal in the corresponding spatial dimension and generating measurement feedback information in the corresponding spatial dimension.
  • the apparatus and method for wireless communication according to the present application may implement independent configuration and measurement feedback of downlink reference signals of a plurality of spatial dimensions, thereby obtaining at least one of the following effects: having lower signaling overhead and complexity;
  • the measurement feedback scheme is flexible to further reduce the overhead of the system; the channel information of multiple spatial dimensions can be effectively obtained, so that the spatial resources can be fully utilized and the system performance is improved.
  • FIG. 1 is a block diagram showing the structure of an apparatus for wireless communication according to an embodiment of the present application
  • FIG. 2 is a diagram showing an apparatus for wireless communication in accordance with one embodiment of the present application.
  • FIG. 3 shows a signaling flow diagram for CSI-RS transmission and CSI feedback and a 3GPP standard in which each process is associated;
  • FIG. 4 shows an example of a subframe configuration of an H-CSI-RS and a V-CSI-RS
  • FIG. 5 shows a specific example of a subframe position when the H-CSI-RS and the V-CSI-RS have the same transmission period
  • FIG. 7 is a diagram showing an example of a mapping relationship between I CQI/PMI and a feedback period N pd and a feedback subframe offset N OFFSET, CQI in an FDD system according to an embodiment of the present application;
  • FIG. 8 is a diagram showing an example of a mapping relationship between I CQI/PMI and a feedback period N pd and a feedback subframe offset N OFFSET, CQI in a TDD system according to an embodiment of the present application;
  • FIG. 9 is a diagram showing an example of definition of a CSI request field according to an embodiment of the present application.
  • FIG. 10 is a diagram showing another example of definition of a CSI request field according to an embodiment of the present application.
  • FIG. 11 is a block diagram showing the structure of an apparatus for wireless communication according to an embodiment of the present application.
  • FIG. 12 is a structural block diagram showing a specific implementation of an apparatus for wireless communication according to an embodiment of the present application.
  • FIG. 13 is a flowchart showing a method for wireless communication in accordance with one embodiment of the present application.
  • FIG. 14 is a flow chart showing a method for wireless communication in accordance with one embodiment of the present application.
  • FIG. 15 is a block diagram showing a first example of a schematic configuration of an evolved Node B (eNB);
  • eNB evolved Node B
  • 16 is a block diagram showing a second example of a schematic configuration of an eNB
  • 17 is a block diagram showing an example of a schematic configuration of a first application example of a user equipment
  • FIG. 18 is a block diagram showing an example of a schematic configuration of a second application example of a user equipment
  • FIG. 19 is a block diagram of an exemplary structure of a general purpose personal computer in which methods and/or apparatus and/or systems in accordance with embodiments of the present invention may be implemented.
  • FIG. 1 shows a block diagram of a structure of an apparatus 100 for wireless communication, the apparatus 100 including: one or more processors 101 configured to: downlink to a base station based on an antenna configuration of a base station, in accordance with an embodiment of the present application
  • the reference signals are separately configured in a plurality of spatial dimensions; and a control message is generated that includes an indication that the base station transmits downlink reference signals in a plurality of spatial dimensions, respectively, for the communication device served by the base station.
  • the base station has a plurality of antenna arrays of spatial dimensions, such as a two-dimensional antenna array having horizontal and vertical directions. Since the existing downlink reference signals are only designed for a one-dimensional antenna array, for example, only in the horizontal dimension in a MIMO system, additional configuration is required in order to obtain channel information in other dimensions. And, for example, considering that the horizontal dimension and the vertical dimension have different transmission environments, in the horizontal dimension, the channel tends to scatter the channel, and in the vertical dimension, the channel tends to look directly at the channel, so the horizontal dimension and the vertical dimension are defined.
  • the codebook is likely to be different.
  • the downlink reference signals are to be transmitted in which spatial dimensions are determined based on the antenna configuration of the base station, for example, the spatial dimension of the antenna array, and are respectively configured for each spatial dimension, for example, can be used and targeted. Dimension Configuration compatible configuration.
  • a control message is generated indicating that the downlink reference signals are respectively transmitted in a plurality of spatial dimensions, so that the user equipment served by the base station can know this and correctly parse the received reference signals.
  • the apparatus 100 may be implemented as a base station, which may be implemented as any type of evolved Node B (eNB), such as a macro eNB and a small eNB.
  • eNB evolved Node B
  • the small eNB may be an eNB covering a cell smaller than the macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB.
  • the base station can be implemented as any other type of base station, such as a NodeB and a base transceiver station (BTS).
  • BTS base transceiver station
  • the base station can include: a body (also referred to as a base station device) configured to control wireless communication; and one or more remote wireless headends (RRHs) disposed at a different location than the body.
  • a body also referred to as a base station device
  • RRHs remote wireless headends
  • various types of terminal devices can operate as base stations by performing base station functions temporarily or semi-persistently.
  • device 100 can also be implemented as any type of server, such as a tower server, a rack server, and a blade server.
  • Device 100 may be a control module mounted on a server (such as an integrated circuit module including a single wafer, and a card or blade inserted into a slot of the blade server).
  • the communication system in which the device 100 is located applies the C-RAN technology
  • the device 100 can be implemented as a server in the core network or in the baseband cloud, and the device 100 configures the downlink reference signal in multiple spaces based on the antenna configuration of the RRH within its management range.
  • the dimensions are separately configured, and a control message for transmitting an indication of the downlink reference signal in multiple spatial dimensions is generated to be transmitted through the RRH.
  • the description is mainly made by taking the device 100 as a base station as an example, and it is understood that the scope of the disclosure of the present application is not limited thereto.
  • the communication device served by the base station may be implemented as a user equipment such as a mobile terminal served by a base station (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/encrypted dog type mobile router, and The digital camera device) or an in-vehicle terminal (such as a car navigation device) or the like, the user device may also be implemented as a terminal (also referred to as a machine type communication (MTC) terminal) that performs machine-to-machine (M2M) communication.
  • the user equipment may be a wireless communication module (such as an integrated circuit module including a single wafer) installed on each of the above terminals.
  • the communication device served/managed by the base station can be implemented as an infrastructure such as a relay base station, a small eNB, etc. that needs to communicate with the base station over a wireless interface and perform channel detection.
  • the user equipment is mainly taken as an example, and it is understood that the scope of the disclosure is not limited thereto.
  • the processor 101 may be, for example, a central processing unit (CPU) having data processing capabilities, a microprocessor, an integrated circuit module, or the like.
  • CPU central processing unit
  • microprocessor microprocessor
  • integrated circuit module or the like.
  • the device 100 when the device 100 is a base station, the device 100 may further include a transceiver unit 102 configured to target each of a plurality of spatial dimensions And transmitting a downlink reference signal in the spatial dimension to the user equipment, and receiving reference signal measurement feedback for each spatial dimension from the user equipment.
  • a transceiver unit 102 configured to target each of a plurality of spatial dimensions And transmitting a downlink reference signal in the spatial dimension to the user equipment, and receiving reference signal measurement feedback for each spatial dimension from the user equipment.
  • FIG. 2 shows a block diagram of a specific implementation of device 100 (identified as device 200 in FIG. 2), and the function and structure of device 200 will be described in detail below with reference to the block diagram.
  • the apparatus 200 includes: a reference signal configuration module 201 configured to separately configure downlink reference signals of a base station in a plurality of spatial dimensions based on an antenna configuration of a base station; and a control message generating module 202 configured to A control message is generated that includes an indication that the base station separately transmits the downlink reference signal in multiple spatial dimensions for the user equipment served by the base station.
  • the reference signal configuration module 201 configures downlink reference signals of different spatial dimensions to be transmitted through different antenna ports.
  • the reference signal configuration module 201 may map the downlink reference signals of different spatial dimensions to different transmission resources in the same pattern, where the transmission resource corresponds to the subframe or time. At least one of the gaps.
  • the downlink reference signals in different spatial dimensions are transmitted on different subframes or time slots, so that the user equipment can determine the spatial dimension corresponding to the downlink reference signal according to the position of the subframe or the time slot.
  • control message generation module 202 includes an indication that the base station separately transmits the downlink reference signal in multiple spatial dimensions in the control message, for example, by defining a new transmission mode to reflect the indication.
  • This new transmission mode will be described later in conjunction with specific application examples.
  • control message generation module 202 is further configured to include the base station's transmission parameters for the downlink reference signal in a particular spatial dimension and/or the user equipment's measurement feedback parameters for the downlink reference signal in a particular spatial dimension in the control message. in.
  • the sending parameters and the measurement feedback parameters included in the control message may be used by the user equipment to perform various operations, such as correctly parsing the received downlink reference signal.
  • the sending parameter includes at least one of a reference signal port configuration parameter, a period configuration parameter, and a subframe offset information corresponding to the specific spatial dimension
  • the feedback parameter includes a measurement feedback period configured to the user equipment to perform a reference signal corresponding to the specific spatial dimension.
  • the reference signal port configuration parameter may include assigning to the phase The number of antenna ports and/or the antenna port number of the reference signal of the spatial dimension
  • the period configuration parameter includes a transmission period of the downlink reference signal, and the like
  • the subframe offset information includes an offset of the downlink reference signal on the subframe, and the like.
  • the measurement feedback period configuration parameter and the subframe offset information may, for example, respectively include a transmission period of the measurement feedback of the reference signal in the corresponding spatial dimension and an offset on the subframe.
  • the transmission parameters and feedback parameters may include related parameters in all spatial dimensions, or may only include related parameters in certain spatial dimensions.
  • the existing transmission parameters and feedback parameters can be used, so that only the transmission parameters and the feedback parameters in the vertical dimension can be transmitted.
  • the base station side and the user equipment side pre-arrange the transmission parameters and feedback parameters of each dimension, so that it is not necessary to transmit these parameters for any one dimension.
  • the transmission period of the reference signal corresponding to each spatial dimension may be set to be different. Of course, you can set it to the same as needed. Similarly, the measurement feedback periods of the reference signals corresponding to the respective spatial dimensions may be set to be different, and may be set to be the same as needed.
  • the measurement feedback can also be aperiodic, for example by triggering feedback from the user equipment.
  • the base station indicates, by using the CSI request field included in the DCI information carried by the PDCCH, that the user equipment performs or does not perform aperiodic measurement feedback.
  • periodic measurement feedback can be configured for all spatial dimensions, and the feedback period is the same;
  • the spatial dimension can be configured for periodic measurement feedback, but the feedback period is not completely the same or completely different; only some spatial dimensions can be configured for periodic measurement feedback, and the remaining spatial dimensions are only for aperiodic measurement feedback, and feedback of periodic feedback
  • the periods can be the same or different; aperiodic measurement feedback is performed for all spatial dimensions.
  • the setting of the reference signal measurement feedback mode of the user equipment of the device 200 is very flexible.
  • the apparatus 200 can be a base station, as shown by the dashed box in FIG. 2, the apparatus 200 can further include a transceiver module 203 configured to target each of a plurality of spatial dimensions, The downlink reference signals on the spatial dimension are respectively transmitted to the user equipment, and the reference signal measurement feedback for each spatial dimension is received from the user equipment.
  • a transceiver module 203 configured to target each of a plurality of spatial dimensions, The downlink reference signals on the spatial dimension are respectively transmitted to the user equipment, and the reference signal measurement feedback for each spatial dimension is received from the user equipment.
  • the transceiver module 203 is configured to transmit individual spaces on different subframes
  • the reference signal corresponding to the dimension, and the measurement feedback corresponding to each spatial dimension is received on different subframes.
  • the base station side can distinguish the spatial dimension corresponding to the received subframe of the received measurement feedback
  • the user equipment side can distinguish the corresponding spatial dimension according to the position of the subframe of the received downlink reference signal.
  • the user equipment After receiving the downlink reference signals in multiple spatial dimensions, the user equipment corresponds the downlink reference signal to the spatial dimension according to the position of the subframe, and performs corresponding measurement, and then follows the feedback parameters in the control message in different subframes. The feedback results of the corresponding spatial dimensions are fed back.
  • the reference signal measurement feedback includes channel estimation information obtained based on the reference signal, including but not limited to channel quality indication (CQI), precoding matrix indication (PMI), rank indication (RI), reference signal received power (RSRP) ) measure the intensity value.
  • CQI channel quality indication
  • PMI precoding matrix indication
  • RI rank indication
  • RSRP reference signal received power
  • the measurement feedback can be periodic or aperiodic, and the feedback mode can be set differently for different spatial dimensions.
  • the transceiver module 203 can receive periodic measurement feedback results through a physical uplink control channel (PUCCH) or a physical uplink data channel (PUSCH). Moreover, in one example, the transceiver module 203 receives measurement feedback of reference signals corresponding to partial spatial dimensions of the plurality of spatial dimensions only through a physical uplink data channel (PUSCH). For example, when the measurement feedback is aperiodic feedback, the transceiver module 203 receives the measurement feedback result only through the PUSCH.
  • PUSCH physical uplink control channel
  • PUSCH physical uplink data channel
  • the control message generating module 202 is further configured to include the aperiodic measurement feedback request of the reference signal corresponding to the specific spatial dimension in the downlink control information (DCI) or when the aperiodic feedback mode is configured on the at least part of the spatial dimension.
  • Random access response (RAR) for user equipment. After the user equipment receives the aperiodic measurement feedback request, the reference signal of the specific spatial dimension included in the request is subjected to aperiodic measurement feedback.
  • the transceiver module 203 is configured to receive the reference signal measurement feedback corresponding to the second spatial dimension on the first available uplink subframe after the uplink subframe corresponding to the reference signal measurement feedback corresponding to the first spatial dimension.
  • the measurement feedback is not limited to this, and the measurement feedback may be received on the second, third, and other available uplink subframes.
  • the devices 100 and 200 can separately configure downlink reference signals and their measurement feedbacks of multiple spatial dimensions, thereby acquiring channel information in multiple spatial dimensions and improving system performance.
  • the downlink reference signal is a channel state information reference signal (CSI-RS)
  • the control message is radio resource control (RRC) signaling.
  • CSI-RS channel state information reference signal
  • RRC radio resource control
  • multiple spatial dimensions include horizontal and vertical directions.
  • the CSI-RS is configured only in the horizontal direction in the prior art
  • the corresponding RRC signaling is also defined only for the horizontal direction. In the case where there are two spatial dimensions in the horizontal direction and the vertical direction, it is necessary to redefine CSI-RS and RRC signaling.
  • the reference signal configuration module 201 is configured to configure a first antenna port group for a horizontal CSI-RS (H-CSI-RS) and a second antenna port group for a vertical CSI-RS (V-CSI-RS), where Each of the second port groups includes eight different antenna ports. For example, the transmit antenna port of the horizontal CSI-RS is unchanged compared to the prior art, but eight antenna ports are newly added for the transmission of the vertical CSI-RS.
  • H-CSI-RS horizontal CSI-RS
  • V-CSI-RS vertical CSI-RS
  • control message generation module 202 is configured to include an indication that the base station transmits the CSI-RS in the horizontal and vertical spatial dimensions in the form of a transmission mode information element in the RRC signaling.
  • the present invention designs a new transmission mode 11 supporting 16 CSI-RS antenna ports, wherein 8 antenna ports are used to transmit H-
  • the CSI-RS (for example, can be the same as the 8 antenna ports of the existing transmission mode), and the other 8 antenna ports are used to transmit the V-CSI-RS.
  • FIG. 3 shows an example of a signaling flow diagram for CSI-RS transmission and CSI feedback to which the present invention is applied.
  • the user equipment side first sends an RRC connection request to the base station side, and then the base station side sends an RRC connection establishment command to the user equipment side, and the user equipment side confirms the RRC connection establishment completion instruction to the base station side.
  • the base station side periodically sends a two-dimensional CSI-RS to the user equipment side, and the user equipment side calculates the two-dimensional CSI according to the CSI-RS and feeds it back to the base station side.
  • the specific signaling information related to the present invention is generated on the base station side, for example, the base station side
  • the transmission mode tm11 is included in the parameter transmissionMode-r10 in the AntennaInfoDedicated-r10;
  • the antenna port numbers for transmitting V-CSI-RS in this application are denoted by p 1 , p 2 , . . . , p 8 .
  • the reference signal corresponding to port p Need to map to complex modulation symbols above, the mapping rule is as follows (1):
  • antenna ports p 1 , p 2 , . . . , p 8 are added to the mapping relationship, for example, as shown in the following equation (2):
  • the vertical dimension CSI-RS (corresponding to ports p 1 , p 2 , . . . , p 8 ) and the horizontal dimension CSI-RS (corresponding to ports 15 , . . . , 22 ) are mapped to different patterns in the same pattern
  • the transmission resource is such that the user equipment can distinguish, wherein the transmission resource corresponds to at least one of a subframe or a time slot.
  • the mapping pattern of the CSI-RS of the vertical dimension on the resource block diagram is the same as that of the horizontal dimension, but the two are transmitted on different subframes or time slots, so that confusion can be avoided.
  • the control message generating module 202 uses the SubframeConfig parameter (I CSI-RS ) in the CSI-RS-Config of the RRC signaling to indicate that the reference signal transmission time of different dimensions is configured, and the SubframeConfig parameter of the reference signal of different dimensions is configured.
  • the range of values is different.
  • FIG. 4 shows an example of a subframe configuration of an H-CSI-RS and a V-CSI-RS.
  • the correspondence relationship between the I CSI-RS and the CSI-RS period and the CSI-RS subframe offset is shown, wherein the portion regarding the H-CSI-RS is defined by the existing standard, regarding The part of V-CSI-RS is newly added. It can be seen that the present application extends the scope of the I CSI-RS compared to existing standards.
  • This table is stored, for example, in advance at both the base station side and the user equipment side.
  • the table is used to perform the table lookup to obtain the corresponding CSI-RS period and the CSI-RS sub- Frame offset. Since the range of values of the I CSI-RS of the horizontal dimension and the vertical dimension is different, it is possible to distinguish whether it corresponds to a horizontal dimension or a vertical dimension according to a specific numerical value.
  • the transmission periods of the H-CSI-RS and the V-CSI-RS may be the same or different, but the two are required to be transmitted in different subframes, which can be set by setting the appropriate I CSI-RS, H and I CSI. -RS, V to achieve.
  • the H-CSI-RS is transmitted on subframes 0, 5, 10...
  • the V-CSI-RS is transmitted on subframes 1, 6, and 11, as shown in FIG.
  • their respective subframe offsets ⁇ CSI-RS, H and ⁇ CSI-RS, V need to satisfy:
  • Equation (3) guarantees that the subframe positions of the H-CSI-RS and the V-CSI-RS are different.
  • the above is only an example, and other subframe configurations may be performed for the H-CSI-RS and the V-CSI-RS.
  • the user equipment side can determine whether it is an H-CSI-RS or a V-CSI-RS according to the location of the subframe carrying the CSI-RS. Additional indications are needed to reduce signaling overhead.
  • the base station side also needs to set relevant parameters of the user equipment for CSI feedback and provide the relevant parameters to the user equipment.
  • the control message generation module 202 can utilize the cqi-pmi-ConfigIndex parameter (I CQI/PMI ) of the RRC signaling to indicate the configuration of the channel state information feedback for the user equipment for the horizontal and vertical spatial dimensions, where, and The configuration of the channel state information feedback of the spatial dimension corresponds to the difference between the value of the cqi-pmi-ConfigIndex parameter and the horizontal space dimension.
  • the table in Fig. 7 or Fig. 8 is simultaneously stored on the base station side and the user equipment side.
  • the user equipment side receives the RRC signaling and parses the cqi-pmi-ConfigIndex parameter therefrom, the corresponding N pd and N OFFSET, CQI are obtained by looking up the table, and the corresponding spatial dimension is fed back with the obtained period and subframe offset. CSI on.
  • the feedback periods of the H-CSI and the V-CSI may be the same or different, but feedback must be performed on different uplink subframes.
  • the case where H-CSI and V-CSI are fed back in the same subframe can be avoided by selecting an appropriate I CQI/PMI, H and I CQI/PMI, V.
  • the base station side can transmit a request for aperiodic CSI feedback through downlink control information (DCI) or random access response (RAR).
  • DCI downlink control information
  • RAR random access response
  • whether or not to trigger aperiodic CSI feedback can be indicated by a CSI request field in DCI format 0/4.
  • the CSI request field is 1 to 2 bits, wherein the 2-bit CSI request field is only applicable to configuring more than one downlink cell and the corresponding DCI format is mapped to the UE-specific search given by the C-RNTI The case of a receiver in space, so only one bit can be used to indicate aperiodic CSI feedback.
  • the existing standard CSI request field can only indicate two states (0 or 1), so it is specified to correspond to: horizontal dimension and vertical dimension respectively trigger aperiodic feedback; neither horizontal nor vertical dimension triggers Aperiodic feedback.
  • the two states respectively correspond to: the vertical dimension triggers the aperiodic feedback; the horizontal dimension triggers the aperiodic feedback (or vice versa).
  • the advantage of this approach is that there is no need to additionally set the CSI request field.
  • the CSI request field may also be set to various combinations of feedback modes such as adding 1 bit to indicate horizontal direction and vertical direction, and FIG. 9 and FIG. 10 respectively show the added 2-bit CSI request field and 3-bit request. The corresponding status of the fields. Since 2 bits are used to describe whether the horizontal and vertical directions respectively perform periodic CSI feedback, the solution covers all possibilities, so that the base station side can configure the trigger of the aperiodic feedback more flexibly.
  • the V-CSI may be transmitted on the first available uplink subframe after the horizontal CSI feedback.
  • the horizontal direction may be aperiodic CSI feedback or periodic CSI feedback. If it is periodic CSI feedback, the horizontal direction may follow the feedback subframe configuration specified by the existing 3GPP standard.
  • the apparatus 100 (or 200) according to the embodiment implements configuration of CSI-RS and its feedback for horizontal and vertical dimensions on the basis of existing standards, and implements horizontal channel information with low overhead and complexity. Estimation and feedback of vertical channel information.
  • the apparatus 300 includes: one or more processors 301 configured to determine that a base station is based on a control message from a base station.
  • the downlink reference signals are respectively sent in the spatial dimension; and the downlink reference signals in the corresponding spatial dimensions are measured and the measurement feedback information in the corresponding spatial dimension is generated in response to the measurement indication of the base station.
  • the device 300 may be a user equipment, such as a mobile terminal served by a base station (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/encrypted dog type mobile router, and a digital camera device).
  • a base station such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/encrypted dog type mobile router, and a digital camera device.
  • the user device may also be implemented as a terminal (also referred to as a machine type communication (MTC) terminal) that performs machine-to-machine (M2M) communication.
  • MTC machine type communication
  • M2M machine-to-machine
  • the user equipment may be a wireless communication module (such as including a single wafer) installed on each of the above terminals Integrated circuit module).
  • the description about the base station is as described in the first embodiment and will not be repeated here.
  • the processor 301 may be, for example, a central processing unit (CPU) having data processing capabilities, a microprocessor, an integrated circuit module, or the like.
  • CPU central processing unit
  • microprocessor microprocessor
  • integrated circuit module or the like.
  • the apparatus 300 can further include a transceiving unit 302 configured to receive the spatial dimension from the base station for each of the plurality of spatial dimensions The downlink reference signal, and the reference signal measurement feedback for each spatial dimension is sent to the base station.
  • FIG. 12 shows a structural block diagram of one specific example of the device 300 (identified as the device 400 in FIG. 12), and the function and structure of the device 400 will be described in detail hereinafter with reference to the block diagram.
  • the apparatus 400 includes: a determining module 401 configured to determine, according to a control message from a base station, a base station to respectively transmit downlink reference signals in multiple spatial dimensions; and a feedback generating module 402 configured to respond to the base station The measurement indication measures the downlink reference signal in the corresponding spatial dimension and generates measurement feedback information in the corresponding spatial dimension.
  • the control message includes information indicating that the user equipment base station will send downlink reference signals in multiple spatial dimensions, so that the user equipment can correctly parse the measurement indication of the base station to perform correct measurement and feedback.
  • the control message includes a base station's transmit parameters for the downlink reference signal in a particular spatial dimension and/or a device's measured feedback parameter for the downlink reference signal in a particular spatial dimension.
  • the sending parameter may include at least one of a reference signal port configuration parameter, a periodic configuration parameter, and a subframe offset information corresponding to the specific spatial dimension
  • the feedback parameter may include a measurement feedback period configured to the device to perform a reference signal corresponding to the specific spatial dimension. At least one of configuration parameters and subframe offset information.
  • the reference signal port configuration parameter may include the number of antenna ports and/or the antenna port number of the reference signal allocated to the corresponding spatial dimension, and the periodic configuration parameter includes a transmission period of the downlink reference signal, etc.
  • the subframe offset information includes an offset of the downlink reference signal on the subframe, and the like.
  • the measurement feedback period configuration parameter and the subframe offset information may, for example, respectively include a transmission period of the measurement feedback of the reference signal in the corresponding spatial dimension and an offset on the subframe.
  • the transmit parameters and feedback parameters may include related parameters in all spatial dimensions, or may only include related parameters in certain spatial dimensions, which may be selected depending on the requirements and conditions of the actual application.
  • the transmission period of the reference signal corresponding to each spatial dimension may be set to be different. Of course, you can set it to the same as needed. Similarly, the measurement feedback periods of the reference signals corresponding to the respective spatial dimensions may be set to be different, and may be set to be the same as needed.
  • the measurement feedback can also be aperiodic, for example by triggering feedback from the user equipment.
  • the user equipment may determine whether to perform aperiodic measurement feedback according to a CSI request field included in the DCI information carried by the base station through the PDCCH. It can be understood that since the feedback mode and the feedback period of the periodic feedback are separately set for each spatial dimension, any combination of all the settings in each spatial dimension can be obtained for all spatial dimensions. That is, the apparatus 400 of the present embodiment can support a flexible and diverse reference signal measurement feedback manner.
  • the user equipment can obtain the correspondence between the downlink reference signal and the spatial dimension according to the sending parameter and the feedback parameter, and the subframe configuration scheme that should be adopted in different spatial dimensions when transmitting the feedback. In this way, the user equipment can correctly parse and perform measurement feedback after receiving the downlink reference signal.
  • the determining module 401 is configured to determine a spatial dimension corresponding to the downlink reference signal according to a difference in transmission resources carrying the downlink reference signal having the same pattern, where the transmission resource corresponds to at least one of a subframe or a time slot.
  • the downlink reference signals of different spatial dimensions correspond to different transmission resources, and the correspondence may be known, for example, by the user equipment and the base station in advance, and the base station sends the downlink reference signal according to the corresponding relationship, and the determining module of the user equipment side 401 determines, according to the correspondence, a spatial dimension corresponding to each downlink reference signal.
  • the determining module 401 can determine the spatial dimension corresponding to the downlink reference signal according to the location of the subframe that carries the downlink reference signal.
  • device 400 can be a user device, as shown by the dashed box in FIG. 12, device 400 can also include a transceiver module 403 configured to target each of a plurality of spatial dimensions Receiving downlink reference signals in the spatial dimension from the base station, respectively, and transmitting reference signal measurement feedback for each spatial dimension to the base station.
  • a transceiver module 403 configured to target each of a plurality of spatial dimensions Receiving downlink reference signals in the spatial dimension from the base station, respectively, and transmitting reference signal measurement feedback for each spatial dimension to the base station.
  • the transceiver module 403 is configured to receive reference signals corresponding to respective spatial dimensions on different subframes, and to transmit measurement feedback corresponding to each spatial dimension on different subframes.
  • the reference signal measurement feedback includes channel estimation information obtained based on the reference signal, including but not limited to channel quality indication (CQI), precoding matrix indication (PMI), rank indication (RI), reference signal received power (RSRP) and the like measure the intensity value.
  • Measurement feedback can be Periodically, it can also be aperiodic, and the feedback mode for different spatial dimensions can be set differently.
  • the feedback mode is set by the base station and then notified to the user equipment, for example by a control message.
  • the determining module 401 determines the measurement feedback configuration of each spatial dimension according to the control message, and the feedback generating module 402 and the transceiver module 403 perform the generation and transmission of the measurement feedback information according to the configuration.
  • the transceiver module 403 can send periodic measurement feedback results through a physical uplink control channel (PUCCH) or a physical uplink data channel (PUSCH). Moreover, in one example, the transceiver module 403 transmits measurement feedback of the reference signals corresponding to the partial spatial dimensions of the plurality of spatial dimensions only through the physical uplink data channel (PUSCH). For example, when the measurement feedback is aperiodic feedback, the transceiver module 403 transmits the measurement feedback result only through the PUSCH.
  • PUSCH physical uplink control channel
  • PUSCH physical uplink data channel
  • the transceiver module 403 also receives downlink control information (DCI) or random access response (RAR) that includes an aperiodic measurement feedback request for a reference signal corresponding to a particular spatial dimension.
  • DCI downlink control information
  • RAR random access response
  • the transceiver module 403 may be configured to send reference signal measurement feedback corresponding to the second spatial dimension on the first available uplink subframe after the uplink subframe corresponding to the reference signal measurement feedback corresponding to the first spatial dimension.
  • the measurement feedback is not limited to this, and the foregoing measurement feedback may also be sent on the second, third, and other available uplink subframes.
  • the devices 300 and 400 can support measurement feedback of downlink reference signals in multiple spatial dimensions, thereby achieving channel information acquisition in multiple spatial dimensions, and improving system performance.
  • the downlink reference signal is a Channel State Information Reference Signal (CSI-RS) and the control message is Radio Resource Control (RRC) signaling.
  • CSI-RS Channel State Information Reference Signal
  • RRC Radio Resource Control
  • multiple spatial dimensions include horizontal and vertical directions.
  • the CSI-RS is configured only in the horizontal direction in the prior art, the corresponding RRC signaling is also defined only for the horizontal direction. In the case where there are two spatial dimensions in the horizontal direction and the vertical direction, it is necessary to redefine CSI-RS and RRC signaling.
  • the RRC signaling includes an indication that the base station in the form of a transmission mode information unit transmits the CSI-RS in the horizontal and vertical spatial dimensions.
  • the cqi-pmi-ConfigIndex parameter in RRC signaling indicates a configuration of channel state information feedback for device 400 for horizontal and vertical spatial dimensions, wherein cqi- corresponds to the configuration of channel state information feedback for the vertical spatial dimension.
  • the value range of the pmi-ConfigIndex parameter is different from the horizontal space dimension.
  • the SubframeConfig parameter in the CSI-RS-Config in the RRC signaling indicates the configuration of the reference signal transmission time of different dimensions, and the value of the SubframeConfig parameter of the reference signal of different dimensions is different.
  • the configuration of the CSI-RS, the configuration of the CSI feedback, and the setting of the RRC signaling are described in detail in the second embodiment, and are not repeated here.
  • FIG. 13 shows a flowchart of a method for wireless communication according to an embodiment of the present application, the method comprising: configuring downlink reference signals of a base station in a plurality of spatial dimensions respectively based on an antenna configuration of a base station (S11) And generating a control message including an indication that the base station separately transmits the downlink reference signal in a plurality of spatial dimensions for the communication device of the base station service (S12).
  • downlink reference signals of different spatial dimensions may be configured to be transmitted through different antenna ports.
  • the downlink reference signals of different spatial dimensions may also be mapped to different transmission resources in the same pattern, so that the communication device distinguishes the downlink reference signals of the corresponding spatial dimensions, wherein the transmission resources correspond to at least one of the subframes or the time slots.
  • the communication device can distinguish downlink reference signals corresponding to different spatial dimensions.
  • the base station may also include the transmission parameter of the downlink reference signal in a specific spatial dimension and/or the measurement feedback parameter of the downlink reference signal of the communication device in a specific spatial dimension in the control message.
  • the sending parameters may include a specific spatial dimension corresponding to At least one of a reference signal port configuration parameter, a periodic configuration parameter, and a subframe offset information
  • the feedback parameter may include a measurement feedback period configuration parameter configured to the communication device to perform a reference signal corresponding to the specific spatial dimension, and a subframe offset information At least one of them.
  • the transmission period of the reference signal corresponding to each spatial dimension may be set to be different.
  • the measurement feedback periods of the reference signals corresponding to the respective spatial dimensions may be set to be different. Of course, the transmission period and/or the feedback period can also be set to be the same.
  • the above method is performed at a base station, as shown by the dashed box in FIG. 13, and the method may further include the step of: respectively, for each of the plurality of spatial dimensions, to the communication device A downlink reference signal on the spatial dimension is transmitted (S13), and reference signal measurement feedback for each spatial dimension is received from the communication device (S14).
  • the reference signals corresponding to the respective spatial dimensions are transmitted on different subframes in step S13, and the measurement feedback corresponding to each spatial dimension is received on different subframes in step S14.
  • the measurement feedback of the reference signal corresponding to the partial spatial dimension of the plurality of spatial dimensions is received only through the physical uplink data channel (PUSCH) in step S14.
  • the aperiodic measurement feedback request of the reference signal corresponding to the specific spatial dimension is further included in the downlink control information or the random access response for use in the communication device in step S12.
  • the measurement feedback result can be received through PUCCH or PUSCH.
  • the reference signal measurement feedback corresponding to the second spatial dimension may be received on the first available uplink subframe after the uplink subframe that is referenced by the reference signal measurement corresponding to the first spatial dimension.
  • the downlink reference signal may be a channel state information reference signal (CSI-RS) and the control message is radio resource control (RRC) signaling.
  • CSI-RS channel state information reference signal
  • RRC radio resource control
  • Multiple spatial dimensions include horizontal and vertical directions.
  • a first antenna port group is configured for the horizontal channel state information reference signal and a second antenna port group is configured for the vertical channel state information reference signal, wherein the first and second antenna port groups are respectively configured Contains 8 different antenna ports.
  • step S12 the indication of the CSI-RS of the base station in the horizontal and vertical spatial dimensions is included in the RRC signaling in the form of a transmission mode information element.
  • the cqi-pmi-ConfigIndex parameter of the RRC signaling may be used to indicate the channel state information feedback for the communication device for the horizontal and vertical spatial dimensions in step S12.
  • the value of the cqi-pmi-ConfigIndex parameter corresponding to the configuration of the channel state information feedback of the vertical space dimension is different from the horizontal space dimension.
  • SubframeConfig parameter in the CSI-RS-Config of the RRC signaling indicates that the reference signal transmission time of different dimensions is configured in step S12, and the value of the SubframeConfig parameter of the reference signal of different dimensions is different.
  • FIG. 14 shows a flowchart of a method for wireless communication according to another embodiment of the present application, including the steps of: determining, based on a control message from a base station, a base station to separately transmit downlink reference signals in multiple spatial dimensions (S21) And measuring the downlink reference signal in the corresponding spatial dimension and generating measurement feedback information in the corresponding spatial dimension in response to the measurement indication of the base station (S23).
  • the control message may include a sending parameter of the downlink reference signal of the base station to the specific spatial dimension and/or a measurement feedback parameter of the downlink reference signal of the user equipment to the specific spatial dimension.
  • the sending parameter includes at least one of a reference signal port configuration parameter, a period configuration parameter, and a subframe offset information corresponding to the specific spatial dimension
  • the feedback parameter includes a measurement feedback period configured to the user equipment to perform a reference signal corresponding to the specific spatial dimension. At least one of configuration parameters and subframe offset information.
  • the transmission period of the reference signal corresponding to each spatial dimension may be set to be different.
  • the measurement feedback periods of the reference signals corresponding to the respective spatial dimensions may be set to be different. Of course, the transmission period and/or the feedback period can also be set to be the same.
  • the spatial dimension corresponding to the downlink reference signal may also be determined according to the difference of the transmission resources carrying the downlink reference signal having the same pattern in step S21, where the transmission resource corresponds to at least one of the subframe or the time slot.
  • the spatial dimension corresponding to the downlink reference signal may be determined according to the location of the subframe carrying the downlink reference signal.
  • the above method may be performed by a user device, as shown by the dashed box in FIG. 14, in which case the method may further comprise the step of: for each of the plurality of spatial dimensions, respectively
  • the base station receives the downlink reference signal in the spatial dimension (S22), and transmits reference signal measurement feedback for each spatial dimension to the base station (S24).
  • the reference signals corresponding to the respective spatial dimensions are received in different subframes in step S22, and the measurement feedback corresponding to each spatial dimension is transmitted in different subframes in step S24.
  • the measurement feedback of the reference signal corresponding to the partial spatial dimension of the plurality of spatial dimensions may be transmitted only through the physical uplink data channel. Also received in step S22 The aperiodic measurement of the reference signal corresponding to the specific spatial dimension feeds back the requested downlink control information or the random access response. As described above, for periodic measurement feedback, the measurement feedback result can be transmitted through PUCCH or PUSCH.
  • the reference signal measurement feedback corresponding to the second spatial dimension may be sent on the first available uplink subframe after the uplink subframe that is referenced by the reference signal measurement corresponding to the first spatial dimension.
  • the downlink reference signal is a channel state information reference signal (CSI-RS), and the control message is radio resource control (RRC) signaling.
  • CSI-RS channel state information reference signal
  • RRC radio resource control
  • Multiple spatial dimensions include horizontal and vertical directions.
  • the RRC signaling includes an indication that the base station in the form of a transmission mode information unit transmits the channel state information reference signal in the horizontal and vertical spatial dimensions. Furthermore, the cqi-pmi-ConfigIndex parameter in the RRC signaling indicates a configuration of channel state information feedback for the user equipment for the horizontal and vertical spatial dimensions, wherein the cqi-pmi- corresponding to the configuration of the channel state information feedback of the vertical spatial dimension The value range of the ConfigIndex parameter is different from the horizontal space dimension.
  • the SubframeConfig parameter in the CSI-RS-Config in the RRC signaling indicates the configuration of the reference signal transmission time of different dimensions, and the value of the SubframeConfig parameter of the reference signal of different dimensions is different.
  • the eNB 800 includes one or more antennas 810 and a base station device 820.
  • the base station device 820 and each antenna 810 may be connected to each other via an RF cable.
  • Each of the antennas 810 includes a single or multiple antenna elements, such as multiple antenna elements included in a multiple input multiple output (MIMO) antenna, and is used by the base station apparatus 820 to transmit and receive wireless signals.
  • eNB 800 can include multiple antennas 810.
  • multiple antennas 810 can be compatible with multiple frequency bands used by eNB 800.
  • FIG. 15 illustrates an example in which the eNB 800 includes multiple antennas 810, the eNB 800 may also include a single antenna. 810.
  • the base station device 820 includes a controller 821, a memory 822, a network interface 823, and a wireless communication interface 825.
  • the controller 821 can be, for example, a CPU or a DSP, and operates various functions of higher layers of the base station device 820. For example, controller 821 generates data packets based on data in signals processed by wireless communication interface 825 and communicates the generated packets via network interface 823. Controller 821 can bundle data from multiple baseband processors to generate bundled packets and pass the generated bundled packets. The controller 821 can have logic functions that perform control such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. This control can be performed in conjunction with nearby eNBs or core network nodes.
  • the memory 822 includes a RAM and a ROM, and stores programs executed by the controller 821 and various types of control data such as a terminal list, transmission power data, and scheduling data.
  • Network interface 823 is a communication interface for connecting base station device 820 to core network 824. Controller 821 can communicate with a core network node or another eNB via network interface 823. In this case, the eNB 800 and the core network node or other eNBs may be connected to each other through a logical interface such as an S1 interface and an X2 interface. Network interface 823 can also be a wired communication interface or a wireless communication interface for wireless backhaul lines. If network interface 823 is a wireless communication interface, network interface 823 can use a higher frequency band for wireless communication than the frequency band used by wireless communication interface 825.
  • the wireless communication interface 825 supports any cellular communication scheme, such as Long Term Evolution (LTE) and LTE-Advanced, and provides a wireless connection to terminals located in cells of the eNB 800 via the antenna 810.
  • Wireless communication interface 825 may typically include, for example, a baseband (BB) processor 826 and RF circuitry 827.
  • the BB processor 826 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs layers (eg, L1, Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP)) Various types of signal processing.
  • BB processor 826 may have some or all of the above described logic functions.
  • the BB processor 826 can be a memory that stores a communication control program, or a module that includes a processor and associated circuitry configured to execute the program.
  • the update program can cause the function of the BB processor 826 to change.
  • the module can be a card or blade that is inserted into a slot of the base station device 820. Alternatively, the module can also be a chip mounted on a card or blade.
  • the RF circuit 827 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 810.
  • the wireless communication interface 825 can include a plurality of BB processors 826. E.g, Multiple BB processors 826 may be compatible with multiple frequency bands used by eNB 800. As shown in FIG. 15, the wireless communication interface 825 can include a plurality of RF circuits 827. For example, multiple RF circuits 827 can be compatible with multiple antenna elements. Although FIG. 15 illustrates an example in which the wireless communication interface 825 includes a plurality of BB processors 826 and a plurality of RF circuits 827, the wireless communication interface 825 may also include a single BB processor 826 or a single RF circuit 827.
  • the eNB 830 includes one or more antennas 840, a base station device 850, and an RRH 860.
  • the RRH 860 and each antenna 840 may be connected to each other via an RF cable.
  • the base station device 850 and the RRH 860 can be connected to each other via a high speed line such as a fiber optic cable.
  • Each of the antennas 840 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the RRH 860 to transmit and receive wireless signals.
  • the eNB 830 can include multiple antennas 840.
  • multiple antennas 840 may be compatible with multiple frequency bands used by eNB 830.
  • FIG. 16 illustrates an example in which the eNB 830 includes multiple antennas 840, the eNB 830 may also include a single antenna 840.
  • the base station device 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855, and a connection interface 857.
  • the controller 851, the memory 852, and the network interface 853 are the same as the controller 821, the memory 822, and the network interface 823 described with reference to FIG.
  • the wireless communication interface 855 supports any cellular communication scheme (such as LTE and LTE-Advanced) and provides wireless communication to terminals located in sectors corresponding to the RRH 860 via the RRH 860 and the antenna 840.
  • Wireless communication interface 855 can generally include, for example, BB processor 856.
  • the BB processor 856 is identical to the BB processor 826 described with reference to FIG. 15 except that the BB processor 856 is connected to the RF circuit 864 of the RRH 860 via the connection interface 857.
  • the wireless communication interface 855 can include a plurality of BB processors 856.
  • multiple BB processors 856 can be compatible with multiple frequency bands used by eNB 830.
  • FIG. 16 illustrates an example in which the wireless communication interface 855 includes a plurality of BB processors 856, the wireless communication interface 855 can also include a single BB processor 856.
  • connection interface 857 is an interface for connecting the base station device 850 (wireless communication interface 855) to the RRH 860.
  • the connection interface 857 may also be a communication module for communicating the base station device 850 (wireless communication interface 855) to the above-described high speed line of the RRH 860.
  • the RRH 860 includes a connection interface 861 and a wireless communication interface 863.
  • connection interface 861 is for connecting the RRH 860 (wireless communication interface 863) to the base station The interface of the 850.
  • the connection interface 861 can also be a communication module for communication in the above high speed line.
  • the wireless communication interface 863 transmits and receives wireless signals via the antenna 840.
  • Wireless communication interface 863 can typically include, for example, RF circuitry 864.
  • the RF circuit 864 can include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals via the antenna 840.
  • the wireless communication interface 863 can include a plurality of RF circuits 864.
  • multiple RF circuits 864 can support multiple antenna elements.
  • FIG. 16 illustrates an example in which the wireless communication interface 863 includes a plurality of RF circuits 864, the wireless communication interface 863 may also include a single RF circuit 864.
  • the transceiver unit, transceiver module can be implemented by the wireless communication interface 825 and the wireless communication interface 855 and/or the wireless communication interface 863. At least a portion of the functionality can also be implemented by controller 821 and controller 851.
  • the controller 821 and the controller 851 can perform configuration of downlink reference signals for a plurality of spatial dimensions and generation of control messages, respectively, by performing functions of the reference signal configuration module 201 and the control message generation module 202.
  • FIG. 17 is a block diagram showing an example of a schematic configuration of a smartphone 900 to which the technology of the present disclosure can be applied.
  • the smart phone 900 includes a processor 901, a memory 902, a storage device 903, an external connection interface 904, an imaging device 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 912, one or more An antenna switch 915, one or more antennas 916, a bus 917, a battery 918, and an auxiliary controller 919.
  • the processor 901 can be, for example, a CPU or a system on chip (SoC), and controls the functions of the application layer and the other layers of the smart phone 900.
  • the memory 902 includes a RAM and a ROM, and stores data and programs executed by the processor 901.
  • the storage device 903 may include a storage medium such as a semiconductor memory and a hard disk.
  • the external connection interface 904 is an interface for connecting an external device such as a memory card and a universal serial bus (USB) device to the smartphone 900.
  • USB universal serial bus
  • the camera 906 includes an image sensor such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image.
  • Sensor 907 can include A set of sensors, such as measurement sensors, gyro sensors, geomagnetic sensors, and acceleration sensors.
  • the microphone 908 converts the sound input to the smartphone 900 into an audio signal.
  • the input device 909 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 910, and receives an operation or information input from a user.
  • the display device 910 includes screens such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays an output image of the smartphone 900.
  • the speaker 911 converts the audio signal output from the smartphone 900 into sound.
  • the wireless communication interface 912 supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication.
  • Wireless communication interface 912 may generally include, for example, BB processor 913 and RF circuitry 914.
  • the BB processor 913 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs various types of signal processing for wireless communication.
  • RF circuitry 914 may include, for example, mixers, filters, and amplifiers, and transmit and receive wireless signals via antenna 916.
  • the wireless communication interface 912 can be a chip module on which the BB processor 913 and the RF circuit 914 are integrated. As shown in FIG.
  • the wireless communication interface 912 can include a plurality of BB processors 913 and a plurality of RF circuits 914.
  • FIG. 17 illustrates an example in which the wireless communication interface 912 includes a plurality of BB processors 913 and a plurality of RF circuits 914, the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914.
  • wireless communication interface 912 can support additional types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless local area network (LAN) schemes.
  • the wireless communication interface 912 can include a BB processor 913 and RF circuitry 914 for each wireless communication scheme.
  • Each of the antenna switches 915 switches the connection destination of the antenna 916 between a plurality of circuits included in the wireless communication interface 912, such as circuits for different wireless communication schemes.
  • Each of the antennas 916 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the wireless communication interface 912 to transmit and receive wireless signals.
  • smart phone 900 can include multiple antennas 916.
  • FIG. 17 shows an example in which the smartphone 900 includes a plurality of antennas 916, the smartphone 900 may also include a single antenna 916.
  • smart phone 900 can include an antenna 916 for each wireless communication scheme.
  • the antenna switch 915 can be omitted from the configuration of the smartphone 900.
  • the bus 917 will be the processor 901, the memory 902, the storage device 903, and the external connection interface. 904.
  • the imaging device 906, the sensor 907, the microphone 908, the input device 909, the display device 910, the speaker 911, the wireless communication interface 912, and the auxiliary controller 919 are connected to each other.
  • Battery 918 provides power to various blocks of smart phone 900 shown in FIG. 17 via a feeder, which is partially shown as a dashed line in the figure.
  • the auxiliary controller 919 operates the minimum necessary function of the smartphone 900, for example, in a sleep mode.
  • the transceiver unit, transceiver module, such as described in FIGS. 11 and 12, can be implemented by the wireless communication interface 912.
  • the wireless communication interface 912 can be implemented by processor 901 or auxiliary controller 919.
  • the processor 901 or the auxiliary controller 919 can implement measurement feedback of the downlink reference signals for each spatial dimension of the multi-space dimension, respectively, by performing the functions of the determination module 401 and the feedback generation module 402.
  • FIG. 18 is a block diagram showing an example of a schematic configuration of a car navigation device 920 to which the technology of the present disclosure can be applied.
  • the car navigation device 920 includes a processor 921, a memory 922, a global positioning system (GPS) module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, and a wireless device.
  • the processor 921 can be, for example, a CPU or SoC and controls the navigation functions and additional functions of the car navigation device 920.
  • the memory 922 includes a RAM and a ROM, and stores data and programs executed by the processor 921.
  • the GPS module 924 measures the position of the car navigation device 920 (such as latitude, longitude, and altitude) using GPS signals received from GPS satellites.
  • Sensor 925 can include a set of sensors, such as a gyro sensor, a geomagnetic sensor, and an air pressure sensor.
  • the data interface 926 is connected to, for example, the in-vehicle network 941 via a terminal not shown, and acquires data (such as vehicle speed data) generated by the vehicle.
  • the content player 927 reproduces content stored in a storage medium such as a CD and a DVD, which is inserted into the storage medium interface 928.
  • the input device 929 includes, for example, a touch sensor, a button or a switch configured to detect a touch on the screen of the display device 930, and receives an operation or information input from a user.
  • the display device 930 includes a screen such as an LCD or OLED display, and displays an image of the navigation function or reproduced content.
  • the speaker 931 outputs the sound of the navigation function or the reproduced content.
  • the wireless communication interface 933 supports any cellular communication scheme (such as LTE and LTE-Advanced), And perform wireless communication.
  • Wireless communication interface 933 may typically include, for example, BB processor 934 and RF circuitry 935.
  • the BB processor 934 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and performs various types of signal processing for wireless communication.
  • the RF circuit 935 may include, for example, a mixer, a filter, and an amplifier, and transmits and receives a wireless signal via the antenna 937.
  • the wireless communication interface 933 can also be a chip module on which the BB processor 934 and the RF circuit 935 are integrated. As shown in FIG.
  • the wireless communication interface 933 may include a plurality of BB processors 934 and a plurality of RF circuits 935.
  • FIG. 18 illustrates an example in which the wireless communication interface 933 includes a plurality of BB processors 934 and a plurality of RF circuits 935, the wireless communication interface 933 may also include a single BB processor 934 or a single RF circuit 935.
  • the wireless communication interface 933 can support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near-field communication scheme, and a wireless LAN scheme.
  • the wireless communication interface 933 may include a BB processor 934 and an RF circuit 935 for each wireless communication scheme.
  • Each of the antenna switches 936 switches the connection destination of the antenna 937 between a plurality of circuits included in the wireless communication interface 933, such as circuits for different wireless communication schemes.
  • Each of the antennas 937 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the wireless communication interface 933 to transmit and receive wireless signals.
  • car navigation device 920 can include a plurality of antennas 937.
  • FIG. 18 shows an example in which the car navigation device 920 includes a plurality of antennas 937, the car navigation device 920 may also include a single antenna 937.
  • car navigation device 920 can include an antenna 937 for each wireless communication scheme.
  • the antenna switch 936 can be omitted from the configuration of the car navigation device 920.
  • Battery 938 provides power to various blocks of car navigation device 920 shown in FIG. 18 via feeders, which are partially shown as dashed lines in the figures. Battery 938 accumulates power supplied from the vehicle.
  • the transceiving unit and the transceiving module such as those described in FIGS. 11 and 12 can be implemented by the wireless communication interface 933. At least a portion of the functionality can also be implemented by processor 921.
  • processor 921 may implement measurement feedback for downlink reference signals for each spatial dimension of multiple spatial dimensions, respectively, by performing functions of determination module 401 and feedback generation module 402.
  • the technology of the present disclosure may also be implemented as an onboard system (or vehicle) 940 that includes one or more of the car navigation device 920, the in-vehicle network 941, and the vehicle module 942.
  • Car The vehicle module 942 generates vehicle data such as vehicle speed, engine speed, and fault information, and outputs the generated data to the in-vehicle network 941.
  • the present invention also proposes a program product for storing an instruction code readable by a machine.
  • the instruction code is read and executed by a machine, the above-described method according to an embodiment of the present invention can be performed.
  • a storage medium for carrying a program product storing the above-described storage machine readable instruction code is also included in the disclosure of the present invention.
  • the storage medium includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and the like.
  • a program constituting the software is installed from a storage medium or a network to a computer having a dedicated hardware structure (for example, the general-purpose computer 1900 shown in FIG. 19), which is installed with various programs. At the time, it is possible to perform various functions and the like.
  • a central processing unit (CPU) 1901 executes various processes in accordance with a program stored in a read only memory (ROM) 1902 or a program loaded from a storage portion 1908 to a random access memory (RAM) 1903.
  • ROM read only memory
  • RAM random access memory
  • data required when the CPU 1901 executes various processes and the like is also stored as needed.
  • the CPU 1901, the ROM 1902, and the RAM 1903 are connected to one another via a bus 1904.
  • Input/output interface 1905 is also coupled to bus 1904.
  • the following components are connected to the input/output interface 1905: an input portion 1906 (including a keyboard, a mouse, etc.), an output portion 1907 (including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.),
  • the storage portion 1908 (including a hard disk or the like), the communication portion 1909 (including a network interface card such as a LAN card, a modem, etc.).
  • the communication section 1909 performs communication processing via a network such as the Internet.
  • the drive 1910 can also be connected to the input/output interface 1905 as needed.
  • a removable medium 1911 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory or the like is mounted on the drive 1910 as needed, so that a computer program read therefrom is installed into the storage portion 1908 as needed.
  • such a storage medium is not limited to the removable medium 1911 shown in FIG. 19 in which a program is stored and distributed separately from the device to provide a program to the user.
  • the removable medium 1911 include a magnetic disk (including a floppy disk (registered trademark)), an optical disk (including a compact disk read only memory (CD-ROM) and a digital versatile disk (DVD)), and a magneto-optical disk (including a mini disk (MD) (registered) Trademark)) and semiconductor memory.
  • the storage medium may be the ROM 1902, the hard disk included in the storage portion 1908, and the like, in which programs are stored, and distributed to the user together with the device containing them.

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Abstract

本发明提供了一种用于基站侧和用户设备侧的无线通信的装置和方法，用于基站侧的无线通信的装置包括：一个或多个处理器，被配置为：基于基站的天线配置对基站的下行参考信号在多个空间维度上分别进行配置；以及生成包含基站在多个空间维度上分别发送下行参考信号的指示的控制消息，以用于基站服务的用户设备。

Description

用于无线通信的装置和方法 技术领域
本发明的实施例总体上涉及无线通信领域，具体地涉及用于基站侧和用户设备侧的无线通信的装置和方法，更具体地，本发明的实施例涉及大规模多输入多输出(MIMO)通信系统中的天线技术。
背景技术
目前，使用2维有源天线阵列可能带来的对通信系统的潜在性能提升受到关注。例如，开始了关于垂直波束赋形/全维度MIMO的研究。在MIMO系统中，2维有源天线阵列的引入带来了机遇与挑战。一方面，它使得MIMO系统对垂直维度的利用成为可能；另一方面，随着垂直维度的引入，可能需要定义更多的天线端口，还可能需要重新设计相关信令和例如信道状态信息参考信号等信号以解决新引入的垂直维度带来的开销问题。
发明内容
在下文中给出了关于本发明的简要概述，以便提供关于本发明的某些方面的基本理解。应当理解，这个概述并不是关于本发明的穷举性概述。它并不是意图确定本发明的关键或重要部分，也不是意图限定本发明的范围。其目的仅仅是以简化的形式给出某些概念，以此作为稍后论述的更详细描述的前序。
根据本申请的一个方面，提供了一种用于无线通信的装置，包括：一个或多个处理器，被配置为：基于基站的天线配置对基站的下行参考信号在多个空间维度上分别进行配置；以及生成包含基站在多个空间维度上分别发送下行参考信号的指示的控制消息，以用于基站服务的通信设备。
根据本申请的另一个方面，提供了一种用于无线通信的装置，包括：一个或多个处理器，被配置为：基于来自基站的控制消息，确定基站在多个空间维度上分别发送下行参考信号；以及响应于基站的测量指示，对相 应空间维度上的下行参考信号进行测量并生成相应空间维度上的测量反馈信息。
根据本申请的一个方面，还提供了一种用于无线通信的方法，包括：基于基站的天线配置对基站的下行参考信号在多个空间维度上分别进行配置；以及生成包含基站在多个空间维度上分别发送下行参考信号的指示的控制消息，以用于基站服务的通信设备。
根据本申请的另一个方面，还提供了一种用于无线通信的装置，包括：基于来自基站的控制消息，确定基站在多个空间维度上分别发送下行参考信号；以及响应于基站的测量指示，对相应空间维度上的下行参考信号进行测量并生成相应空间维度上的测量反馈信息。
依据本发明的其它方面，还提供了用于实现上述用于无线通信的方法的计算机程序代码和计算机程序产品以及其上记录有该用于实现上述用于基站侧和用户设备侧的无线通信的方法的计算机程序代码的计算机可读存储介质。
根据本申请的用于无线通信的装置和方法可以实现对多个空间维度的下行参考信号的独立配置和测量反馈，从而获得以下效果中的至少一个：具有较低的信令开销和复杂度；测量反馈方案灵活从而进一步降低了系统的开销；能够有效地获得多个空间维度的信道信息使得能够充分地利用空间资源，提升了系统性能。
通过以下结合附图对本发明的优选实施例的详细说明，本发明的上述以及其他优点将更加明显。
附图说明
为了进一步阐述本发明的以上和其它优点和特征，下面结合附图对本发明的具体实施方式作进一步详细的说明。所述附图连同下面的详细说明一起包含在本说明书中并且形成本说明书的一部分。具有相同的功能和结构的元件用相同的参考标号表示。应当理解，这些附图仅描述本发明的典型示例，而不应看作是对本发明的范围的限定。在附图中：
图1是示出了根据本申请的一个实施例的用于无线通信的装置的结构框图；
图2是示出了根据本申请的一个实施例的用于无线通信的装置的一 种具体实现方式的结构框图；
图3示出了关于CSI-RS传输以及CSI反馈的信令流程图以及其中各个过程相关联的3GPP标准；
图4示出了H-CSI-RS和V-CSI-RS的子帧配置的一个示例；
图5示出了H-CSI-RS与V-CSI-RS具有相同传输周期时的子帧位置的一个具体示例；
图6示出了现有标准中ICQI/PMI与反馈周期Npd和反馈子帧偏移NOFFSET,CQI的映射关系；
图7示出了根据本申请的实施例的FDD系统中ICQI/PMI与反馈周期Npd和反馈子帧偏移NOFFSET,CQI的映射关系的示例的图；
图8示出了根据本申请的实施例的TDD系统中ICQI/PMI与反馈周期Npd和反馈子帧偏移NOFFSET,CQI的映射关系的示例的图；
图9是示出了根据本申请的实施例的CSI请求字段的定义的示例的图；
图10是示出了根据本申请的实施例的CSI请求字段的定义的另一个示例的图；
图11是示出了根据本申请的一个实施例的用于无线通信的装置的结构框图；
图12是示出了根据本申请的一个实施例的用于无线通信的装置的一种具体实现方式的结构框图；
图13是示出了根据本申请的一个实施例的用于无线通信的方法的流程图；
图14是示出了根据本申请的一个实施例的用于无线通信的方法的流程图；
图15是示出演进型节点B(eNB)的示意性配置的第一示例的框图；
图16是示出eNB的示意性配置的第二示例的框图；
图17是示出用户设备的第一应用示例的示意性配置的示例的框图；
图18是示出用户设备的第二应用示例的示意性配置的示例的框图；以及
图19是其中可以实现根据本发明的实施例的方法和/或装置和/或系统的通用个人计算机的示例性结构的框图。
具体实施方式
在下文中将结合附图对本发明的示范性实施例进行描述。为了清楚和简明起见，在说明书中并未描述实际实施方式的所有特征。然而，应该了解，在开发任何这种实际实施例的过程中必须做出很多特定于实施方式的决定，以便实现开发人员的具体目标，例如，符合与系统及业务相关的那些限制条件，并且这些限制条件可能会随着实施方式的不同而有所改变。此外，还应该了解，虽然开发工作有可能是非常复杂和费时的，但对得益于本公开内容的本领域技术人员来说，这种开发工作仅仅是例行的任务。
在此，还需要说明的一点是，为了避免因不必要的细节而模糊了本发明，在附图中仅仅示出了与根据本发明的方案密切相关的设备结构和/或处理步骤，而省略了与本发明关系不大的其他细节。
<第一实施例>
图1示出了根据本申请的一个实施例的用于无线通信的装置100的结构框图，该装置100包括：一个或多个处理器101，被配置为：基于基站的天线配置对基站的下行参考信号在多个空间维度上分别进行配置；以及生成包含基站在多个空间维度上分别发送下行参考信号的指示的控制消息，以用于基站服务的通信设备。
在装置100所在的无线通信系统中，基站具有多个空间维度的天线阵列，例如具有水平方向和垂直方向的二维天线阵列。由于现有的下行参考信号仅针对一维天线阵列、例如在MIMO系统中仅针对水平维度设计，因此为了获取其他维度上的信道信息，需要进行另外的配置。并且，例如，考虑到水平维度和垂直维度有着不同的传输环境，在水平维度上，信道更趋于散射信道，而在垂直维度上，信道更趋于直视信道，因此水平维度和垂直维度定义的码本很可能不同。所以，需要进行下行信道测量、估计或者解调的通信设备例如用户设备需要知道当前的下行参考信号是水平维度的还是垂直维度的。在本实施例的装置100中，基于基站的天线配置例如天线阵列的空间维度的分布来决定要在哪些空间维度上发送下行参考信号，并针对各个空间维度分别进行配置，例如可以使用与针对水平维度 的配置兼容的配置。相应地，生成指示在多个空间维度上分别发送下行参考信号的控制消息，以便基站服务的用户设备能够知悉这一点并正确解析所接收到的参考信号。
在本实施例以及以下的实施例中，装置100可以被实现为基站，基站可以被实现为任何类型的演进型节点B(eNB)，诸如宏eNB和小eNB。小eNB可以为覆盖比宏小区小的小区的eNB，诸如微微eNB、微eNB和家庭(毫微微)eNB。代替地，基站可以被实现为任何其他类型的基站，诸如NodeB和基站收发台(BTS)。基站可以包括：被配置为控制无线通信的主体(也称为基站设备)；以及设置在与主体不同的地方的一个或多个远程无线头端(RRH)。另外，各种类型的终端设备均可以通过暂时地或半持久性地执行基站功能而作为基站工作。此外，装置100也可以被实现为任何类型的服务器，诸如塔式服务器、机架式服务器以及刀片式服务器。装置100可以为安装在服务器上的控制模块(诸如包括单个晶片的集成电路模块，以及插入到刀片式服务器的槽中的卡或刀片(blade))。例如，装置100所在的通信系统应用C-RAN技术，装置100可以被实现为核心网中或基带云端设置的服务器，装置100基于其管理范围内的RRH的天线配置对下行参考信号在多个空间维度上分别进行配置，并生成在多个空间维度上分别发送下行参考信号的指示的控制消息以通过RRH进行发送。在以下的描述中，主要以装置100被实现为基站为例进行说明，可以理解，本申请公开的范围不限于此。
基站所服务的通信设备可以被实现为用户设备，用户设备例如是基站服务的移动终端(诸如智能电话、平板个人计算机(PC)、笔记本式PC、便携式游戏终端、便携式/加密狗型移动路由器和数字摄像装置)或者车载终端(诸如汽车导航设备)等，用户设备还可以被实现为执行机器对机器(M2M)通信的终端(也称为机器类型通信(MTC)终端)。此外，用户设备可以为安装在上述终端中的每个终端上的无线通信模块(诸如包括单个晶片的集成电路模块)。
此外，在一些可选的例子中，基站所服务/管理的通信设备可以被实现为例如中继基站、小eNB等需要通过无线接口与基站通信并进行信道检测的基础设施。在以下的描述中，主要以用户设备为例进行说明，可以理解，本申请公开的范围不限于此。
处理器101例如可以为具有数据处理能力的中央处理单元(CPU)、微处理器、集成电路模块等。
此外，如图1中的虚线框所示，在装置100的一个示例中，当装置100为基站时，装置100还可以包括收发单元102，被配置为针对多个空间维度中的每一个空间维度，分别向用户设备发送该空间维度上的下行参考信号，以及从用户设备接收针对每一个空间维度的参考信号测量反馈。
相应地，图2示出了装置100(在图2中标识为装置200)的一种具体实现方式的结构框图，并且在下文中将参照该框图对装置200的功能和结构进行详细描述。如图2所示，装置200包括：参考信号配置模块201，被配置为基于基站的天线配置对基站的下行参考信号在多个空间维度上分别进行配置；以及控制消息生成模块202，被配置为生成包含基站在多个空间维度上分别发送下行参考信号的指示的控制消息，以用于基站服务的用户设备。
在一个示例中，参考信号配置模块201将不同空间维度的下行参考信号配置为通过不同的天线端口来发送。
为了使得用户设备能够区分相应空间维度的下行参考信号，参考信号配置模块201可以将不同空间维度的下行参考信号以相同的式样映射至不同的传输资源上，其中，传输资源对应于子帧或时隙中至少之一。换言之，不同空间维度上的下行参考信号在不同的子帧或时隙上传输，从而使得用户设备可以根据子帧或时隙的位置来判断下行参考信号所对应的空间维度。
接下来，控制消息生成模块202将基站在多个空间维度上分别发送下行参考信号的指示包含在控制消息中，例如可以通过定义新的传输模式来反映该指示。在后文中将结合具体的应用示例来描述这种新的传输模式的定义。
在一个示例中，控制消息生成模块202还被配置为将基站对特定空间维度上的下行参考信号的发送参数以及/或者用户设备对特定空间维度上的下行参考信号的测量反馈参数包含于控制消息中。该控制消息中包含的发送参数和测量反馈参数可以供用户设备用于进行各种操作，例如正确解析所收到的下行参考信号。
例如，发送参数包括特定空间维度对应的参考信号端口配置参数、周期配置参数和子帧偏移信息中至少之一，以及反馈参数包括配置给用户设备进行相应于特定空间维度的参考信号的测量反馈周期配置参数以及子帧偏移信息中至少之一。其中，参考信号端口配置参数可以包括分配给相 应空间维度的参考信号的天线端口数目以及/或者天线端口号，周期配置参数包括下行参考信号的发送周期等，子帧偏移信息包括下行参考信号在子帧上的偏移量等。测量反馈周期配置参数以及子帧偏移信息例如可以分别包括相应空间维度上的参考信号的测量反馈的发送周期以及在子帧上的偏移量。
应该注意，发送参数和反馈参数可以包括全部空间维度上的相关参数，也可以仅包括某些空间维度上的相关参数。例如，在考虑水平维度和垂直维度的情况下，对于水平维度，可以沿用已有的发送参数和反馈参数，从而可以仅发送垂直维度上的发送参数和反馈参数。当然，这仅是一个示例，可以采用其他方式，例如由基站侧和用户设备侧预先约定好每一个维度的发送参数和反馈参数，从而对于任何一个维度都不必进行这些参数的发送。
其中，各个空间维度对应的参考信号的发送周期可以被设置为不同。当然，根据需要，也可以将其设置为相同。类似地，各个空间维度对应的参考信号的测量反馈周期可以被设置为不同，根据需要，也可以将其设置为相同。
此外，测量反馈还可以是非周期的，例如通过触发用户设备进行反馈的方式来进行。例如，基站通过PDCCH承载的DCI信息中包含的CSI请求域来指示用户设备进行或不进行非周期测量反馈。可以理解，由于反馈方式针对每一个空间维度单独设定，因此对于所有的空间维度可以获得如下各种设置：对于所有的空间维度均可配置进行周期性测量反馈，且反馈周期相同；对于所有的空间维度均可配置进行周期性测量反馈，但反馈周期不完全相同或完全不同；仅对部分空间维度可配置进行周期性测量反馈，其余空间维度仅进行非周期测量反馈，其中周期性反馈的反馈周期可以相同或不同；对于所有的空间维度均进行非周期性测量反馈。
可以看出，本实施例的装置200对于用户设备的参考信号测量反馈方式的设置是非常灵活的。
如前所述，在一个示例中，装置200可以为基站，如图2中的虚线框所示，装置200还可以包括收发模块203，被配置为针对多个空间维度中的每一个空间维度，分别向用户设备发送该空间维度上的下行参考信号，以及从用户设备接收针对每一个空间维度的参考信号测量反馈。
在一个示例中，收发模块203被配置为在不同的子帧上发送各个空间 维度对应的参考信号，以及在不同的子帧上接收各个空间维度对应的测量反馈。这样可以使得基站侧能够根据接收的测量反馈的子帧的位置来区分其所对应的空间维度，并且用户设备侧能够根据所接收的下行参考信号的子帧的位置来区分其对应的空间维度。
用户设备在接收到多个空间维度上的下行参考信号之后，根据子帧的位置将下行参考信号与空间维度相对应，并进行相应的测量，然后按照控制消息中的反馈参数来在不同子帧上反馈相应空间维度的测量结果。
示例性地，参考信号测量反馈包括基于参考信号所获得的信道估计信息，包括但不限于信道质量指示(CQI)、预编码矩阵指示(PMI)、秩指示(RI)、参考信号接收功率(RSRP)等测量强度值。如前所述，测量反馈可以是周期性的，也可以是非周期的，并且对于不同的空间维度反馈方式可以不同地设置。
其中，收发模块203可以通过物理上行控制信道(PUCCH)或物理上行数据信道(PUSCH)来接收周期性的测量反馈结果。此外，在一个示例中，收发模块203仅通过物理上行数据信道(PUSCH)接收多个空间维度中的部分空间维度对应的参考信号的测量反馈。例如，在测量反馈为非周期反馈时，收发模块203仅通过PUSCH来接收测量反馈结果。
其中，在对至少部分空间维度配置非周期反馈方式时，控制消息生成模块202还被配置为将对特定空间维度对应的参考信号的非周期测量反馈请求包含于下行链路控制信息(DCI)或者随机接入响应(RAR)中以用于用户设备。当用户设备接收到该非周期测量反馈请求之后，将对请求中所包括的特定空间维度的参考信号进行非周期测量反馈。
示例性地，收发模块203被配置为在第一空间维度对应的参考信号测量反馈的上行子帧之后的第一个可用上行子帧上接收第二空间维度对应的参考信号测量反馈。当然，并不限于此，也可以在第二个、第三个等可用上行子帧上接收上述测量反馈。但是，应该理解，反馈的子帧越接近，实时性越好，反馈信息越准确。
综上所述，装置100和200可以对多个空间维度的下行参考信号及其测量反馈分别进行配置，从而实现多个空间维度上的信道信息的获取，提高了系统性能。
<第二实施例>
在该实施例中，下行参考信号为信道状态信息参考信号(CSI-RS)，控制消息为无线资源控制(RRC)信令。例如，多个空间维度包括水平方向和垂直方向。
由于现有技术中仅对水平方向配置CSI-RS，相应的RRC信令中也仅针对水平方向定义。在存在水平方向和垂直方向两个空间维度的情况下，需要重新定义CSI-RS和RRC信令。
参考信号配置模块201被配置为为水平CSI-RS(H-CSI-RS)配置第一天线端口组和为垂直CSI-RS(V-CSI-RS)配置第二天线端口组，其中，第一与第二端口组各自包括8个不同的天线端口。例如，与现有技术相比，水平CSI-RS的发送天线端口不变，但是新增加了8个天线端口用于垂直CSI-RS的发送。
在一个示例中，控制消息生成模块202被配置为将基站在水平和垂直空间维度上发送CSI-RS的指示以传输模式信息单元的形式包含于RRC信令中。
由于现有的传输模式1至10最多仅支持8个CSI-RS天线端口，因此本发明中设计支持16个CSI-RS天线端口的新传输模式11，其中，8个天线端口用于发送H-CSI-RS(例如可以与已有传输模式的8个天线端口相同)，另外8个天线端口用于发送V-CSI-RS。
图3示出了应用本发明的关于CSI-RS传输以及CSI反馈的信令流程图的示例。如图3所示，用户设备侧首先向基站侧发出RRC连接请求，接着，基站侧向用户设备侧发出RRC连接建立指令，用户设备侧确认之后向基站侧发出RRC连接建立完成的指令。完成RRC连接之后，基站侧周期性地向用户设备侧发出两维度的CSI-RS，用户设备侧根据该CSI-RS来计算两维度的CSI并将其反馈回基站侧。
关于基站侧生成本发明涉及的具体的信令信息，例如，基站侧
①将传输模式tm11包含在AntennaInfoDedicated-r10中的参数transmissionMode-r10里；
②将枚举类型an16(表示使用了16个CSI-RS天线端口)包含在CSI-RS config-r13中的antennaPortsCount-r13参数中；
③生成H-CSI-RS和V-CSI-RS的子帧配置信息；
④生成H-CSI和V-CSI的反馈配置信息。
其中，现有的CSI-RS只在1个、2个、4个或8个天线端口上传输，使用的端口号分别为p＝15；p＝15,16；p＝15,…,18和p＝15,…,22。本申请中传输V-CSI-RS的天线端口号表示为p1，p2，…，p8。例如，根据现有3GPP的LTE标准，端口p对应的参考信号
Figure PCTCN2016077360-appb-000001
需要映射到复调制符号
Figure PCTCN2016077360-appb-000002
上，映射法则如下式(1)：
Figure PCTCN2016077360-appb-000003
其中，式(1)中的其他参数与现有标准的定义保持一致。在本申请中，天线端口p1，p2，…，p8被添加到映射关系中，例如如下式(2)所示：
Figure PCTCN2016077360-appb-000004
Figure PCTCN2016077360-appb-000005
其中，垂直维度的CSI-RS(对应于端口p1，p2，…，p8)与水平维度的CSI-RS(对应于端口15,…,22)以相同的式样(pattern)映射至不同的传输资源上，以便用户设备能够进行区分，其中，传输资源对应于子帧或时隙中至少之一。具体地，垂直维度的CSI-RS在资源块图上的映射图样与水平维度的相同，但是二者在不同的子帧或时隙上发送，从而可以避免混淆。
此外，用户设备侧需要获知各个维度的CSI-RS的发送时间比如子帧位置从而正确获得相应维度的CSI-RS进而进行CSI反馈。在一个示例中，控制消息生成模块202利用RRC信令的CSI-RS-Config中的 SubframeConfig参数(ICSI-RS)指示对不同维度的参考信号发送时间进行配置，不同维度的参考信号的SubframeConfig参数的取值范围不同。
图4示出了H-CSI-RS和V-CSI-RS的子帧配置的一个示例。在图4所示的表中，示出了ICSI-RS与CSI-RS周期和CSI-RS子帧偏移的对应关系，其中关于H-CSI-RS的部分为现有标准定义的，关于V-CSI-RS的部分是新添加的。可以看出，与现有标准相比，本申请扩大了ICSI-RS的范围。
该表例如预先同时保存在基站侧和用户设备侧。当用户设备侧接收到RRC信令并从中解析出CSI-RS-Config中的SubframeConfig参数、即ICSI-RS时，利用该值进行查表，从而获知相应的CSI-RS周期和CSI-RS子帧偏移。由于水平维度和垂直维度的ICSI-RS的取值范围不同，因此可以根据具体数值区分对应于水平维度还是垂直维度。
其中，H-CSI-RS和V-CSI-RS的传输周期可以相同，也可以不同，但是要求二者在不同的子帧上传输，这可以通过设置适当的ICSI-RS,H和ICSI-RS,V来实现。
例如，如果为H-CSI-RS与V-CSI-RS配置相同的传输周期，以周期为TCSI-RS＝5ms为例，ICSI-RS,H设置为0，ICSI-RS,V设置为156，则H-CSI-RS在子帧0、5、10...上传输，V-CSI-RS在子帧1、6、11上传输，如图5所示。更为一般地，在H-CSI-RS与V-CSI-RS配置相同的传输周期下，它们各自的子帧偏移ΔCSI-RS,H与ΔCSI-RS,V需要满足：
ΔCSI-RS,H+a·TCSI-RS≠ΔCSI-RS,V+b·TCSI-RS    (3)
其中，a与b是两个正整数。换言之，式(3)保证了H-CSI-RS和V-CSI-RS的子帧位置不同。
另一方面，如果H-CSI-RS与V-CSI-RS配置不同的传输周期，例如，H-CSI-RS的传输周期TCSI-RS,H＝5ms，V-CSI-RS的传输周期TCSI-RS,V＝20ms，ICSI-RS,H设置为1，则V-CSI-RS的子帧偏移ΔCSI-RS,V需要满足：
ΔCSI-RS,H+c·TCSI-RS,H≠ΔCSI-RS,V+d·TCSI-RS,V    (4)
其中，c与d是两个正整数。上述不等式(4)可以化简为以下不等式(5)：
1+5c≠ΔCSI-RS,V+20d    (5)
因此，ΔCSI-RS,V≠1+5c-20d，又因为(1+5c-20d)mod 5＝1，因此ΔCSI-RS,V需要满足以下不等式(6)：
ΔCSI-RS,Vmod5≠1    (6)
应该理解，以上仅为示例，也可以对H-CSI-RS和V-CSI-RS进行其他的子帧配置。通过在不同的子帧上传输H-CSI-RS和V-CSI-RS，用户设备侧能够根据承载CSI-RS的子帧的位置来判断是H-CSI-RS还是V-CSI-RS而不需要额外的指示，从而减小了信令开销。
此外，在基站侧还需要设定用户设备进行CSI反馈的相关参数并提供给用户设备。在一个示例中，控制消息生成模块202可以利用RRC信令的cqi-pmi-ConfigIndex参数(ICQI/PMI)指示对用户设备针对水平和垂直空间维度的信道状态信息反馈的配置，其中，与垂直空间维度的信道状态信息反馈的配置对应的cqi-pmi-ConfigIndex参数的取值与水平空间维度的不同。
在现有标准中，定义了周期性CSI反馈，以FDD系统为例，ICQI/PMI与反馈周期Npd和反馈子帧偏移NOFFSET,CQI的映射关系如图6所示，从图6中可以看出，542≤ICQI/PMI≤1023的部分并没有被使用，因此，本发明使用这些预留值来指示垂直维度的ICQI/PMI以及其对Npd和NOFFSET,CQI的映射关系，例如如图7和8所示，分别对应FDD系统与TDD系统。
图7或图8中的表同时保存在基站侧和用户设备侧。当用户设备侧接收到RRC信令并从中解析出cqi-pmi-ConfigIndex参数时，通过查表获得对应的Npd和NOFFSET,CQI，并以所获得的周期和子帧偏移来反馈相应空间维度上的CSI。
其中，H-CSI与V-CSI的反馈周期可以相同或者不同，但是必须在不同的上行子帧上进行反馈。可以通过选择适当的ICQI/PMI,H与ICQI/PMI,V来避免H-CSI与V-CSI在相同的子帧上反馈的情况。
此外，还可以设置CSI的非周期反馈。例如，在DCI中的CSI请求域中包含相应的比特信息时，用户设备应对该维度进行CSI的非周期反馈。
相应地，基站侧可以通过下行链路控制信息(DCI)或随机接入响应(RAR)来发送非周期CSI反馈的请求。例如，可以通过DCI格式0/4中的CSI请求字段来指示是否触发非周期CSI反馈。在现有标准中，CSI请求字段为1至2个比特，其中2比特的CSI请求字段仅适用于配置有多于一个下行小区并且相应DCI格式被映射到由C-RNTI给出的UE特定搜索空间中的接收机的情形，因此仅有一个比特可以用于指示非周期 CSI反馈。换言之，现有标准的CSI请求字段仅可以指示两种状态(0或1)，因此，将其规定为分别对应于：水平维度和垂直维度都触发非周期反馈；水平维度和垂直维度都不触发非周期反馈。当然，并不限于此，例如还可以规定为两种状态分别对应于：垂直维度触发非周期反馈；水平维度触发非周期反馈(或者反之)。这种方式的优点在于不需要额外设置CSI请求字段。
此外，还可以将CSI请求字段设置为比如增加1比特来表示水平方向和垂直方向的反馈方式的各种组合，图9和图10分别示出了增加后的2比特CSI请求字段和3比特请求字段分别对应的状态。由于采用了2比特来描述水平方向和垂直方向分别是否进行周期性CSI反馈，因此该方案涵盖了所有的可能，使得基站侧可以更加灵活地配置非周期反馈的触发。
如果垂直方向被配置为进行非周期CSI反馈，则可以在水平方向的CSI反馈之后的第一个可用上行子帧上传输该V-CSI。注意，水平方向可以为非周期CSI反馈，也可以为周期CSI反馈，如果为周期CSI反馈，则水平方向可以沿用现有3GPP标准规定的反馈子帧配置。
根据该实施例的装置100(或200)在现有标准的基础上实现了对水平维度和垂直维度的CSI-RS及其反馈的配置，以较低的开销和复杂度实现了水平信道信息和垂直信道信息的估计与反馈。
<第三实施例>
图11示出了根据本申请的一个实施例的用于无线通信的装置300的结构框图，装置300包括：一个或多个处理器301，被配置为基于来自基站的控制消息，确定基站在多个空间维度上分别发送下行参考信号；以及响应于基站的测量指示，对相应空间维度上的下行参考信号进行测量并生成相应空间维度上的测量反馈信息。
其中，装置300可以为用户设备，用户设备例如是基站服务的移动终端(诸如智能电话、平板个人计算机(PC)、笔记本式PC、便携式游戏终端、便携式/加密狗型移动路由器和数字摄像装置)或者车载终端(诸如汽车导航设备)等，用户设备还可以被实现为执行机器对机器(M2M)通信的终端(也称为机器类型通信(MTC)终端)。此外，用户设备可以为安装在上述终端中的每个终端上的无线通信模块(诸如包括单个晶片的 集成电路模块)。关于基站的描述如第一实施例中所述，在此不再重复。
此外，当其他通信设备比如中继基站或小基站等需要获知其到上述基站的信道信息的情况下，也可以视为这里所述的用户设备。
处理器301例如可以为具有数据处理能力的中央处理单元(CPU)、微处理器、集成电路模块等。
此外，在一个示例中，如图11中的虚线框所示，装置300还可以包括收发单元302：被配置为针对多个空间维度中的每一个空间维度，分别从基站接收该空间维度上的下行参考信号，以及向基站发送针对每一个空间维度的参考信号测量反馈。
相应地，图12示出了装置300(在图12中标识为装置400)的一个具体示例的结构框图，并且在下文中将参照该框图对装置400的功能和结构进行详细描述。如图12所示，装置400包括：确定模块401，被配置为基于来自基站的控制消息，确定基站在多个空间维度上分别发送下行参考信号；以及反馈生成模块402，被配置为响应于基站的测量指示，对相应空间维度上的下行参考信号进行测量并生成相应空间维度上的测量反馈信息。
其中，控制消息中包含指示用户设备基站将发送多个空间维度上的下行参考信号的信息，以便用户设备能够正确地解析基站的测量指示以进行正确的测量和反馈。
在一个示例中，控制消息包括基站对特定空间维度上的下行参考信号的发送参数以及/或者装置对特定空间维度上的下行参考信号的测量反馈参数。例如，发送参数可以包括特定空间维度对应的参考信号端口配置参数、周期配置参数和子帧偏移信息中至少之一，反馈参数可以包括配置给装置进行相应于特定空间维度的参考信号的测量反馈周期配置参数以及子帧偏移信息中至少之一。其中，如在第一实施例中所述，参考信号端口配置参数可以包括分配给相应空间维度的参考信号的天线端口数目以及/或者天线端口号，周期配置参数包括下行参考信号的发送周期等，子帧偏移信息包括下行参考信号在子帧上的偏移量等。测量反馈周期配置参数以及子帧偏移信息例如可以分别包括相应空间维度上的参考信号的测量反馈的发送周期以及在子帧上的偏移量。类似地，发送参数和反馈参数可以包括全部空间维度上的相关参数，也可以仅包括某些空间维度上的相关参数，这可以取决于实际应用的要求和条件来选择。
其中，各个空间维度对应的参考信号的发送周期可以被设置为不同。当然，根据需要，也可以将其设置为相同。类似地，各个空间维度对应的参考信号的测量反馈周期可以被设置为不同，根据需要，也可以将其设置为相同。
此外，测量反馈还可以是非周期的，例如通过触发用户设备进行反馈的方式来进行。例如，用户设备可以根据基站通过PDCCH承载的DCI信息中包含的CSI请求域来确定进行或不进行非周期测量反馈。可以理解，由于反馈方式以及周期性反馈的反馈周期针对每一个空间维度单独设定，因此对于所有的空间维度可以获得各个空间维度上所有设置的任意组合。即，本实施例的装置400可以支持灵活多样的参考信号测量反馈方式。
可以看出，用户设备根据发送参数和反馈参数可以获得下行参考信号与空间维度的对应关系，以及发送反馈时不同空间维度应该采用的子帧配置方案。这样，用户设备在接收到下行参考信号之后可以正确地解析并进行测量反馈。
在一个示例中，确定模块401被配置为根据承载具有相同式样的下行参考信号的传输资源的不同来确定下行参考信号所对应的空间维度，其中，传输资源对应于子帧或时隙中至少之一。如前所述，不同空间维度的下行参考信号对应于不同的传输资源，该对应关系可以例如预先由用户设备和基站知道，基站按照该对应关系来发送下行参考信号，而用户设备侧的确定模块401根据该对应关系来确定各个下行参考信号所对应的空间维度。例如，确定模块401可以根据承载下行参考信号的子帧的位置来确定下行参考信号所对应的空间维度。
如前所述，在一个示例中，装置400可以为用户设备，如图12中的虚线框所示，装置400还可以包括收发模块403，被配置为针对多个空间维度中的每一个空间维度，分别从基站接收该空间维度上的下行参考信号，以及向基站发送针对每一个空间维度的参考信号测量反馈。
在一个示例中，收发模块403被配置为在不同的子帧上接收各个空间维度对应的参考信号，以及在不同的子帧上发送各个空间维度对应的测量反馈。
如前所述，参考信号测量反馈包括基于参考信号所获得的信道估计信息，包括但不限于信道质量指示(CQI)、预编码矩阵指示(PMI)、秩指示(RI)、参考信号接收功率(RSRP)等测量强度值。测量反馈可以是 周期性的，也可以是非周期的，并且对于不同的空间维度反馈方式可以不同地设置。反馈方式是由基站设定，然后例如通过控制消息通知给用户设备的。换言之，确定模块401根据控制消息来确定各个空间维度的测量反馈配置，并且反馈生成模块402和收发模块403按照该配置来进行测量反馈信息的生成和发送。
其中，收发模块403可以通过物理上行控制信道(PUCCH)或物理上行数据信道(PUSCH)来发送周期性的测量反馈结果。此外，在一个示例中，收发模块403仅通过物理上行数据信道(PUSCH)发送多个空间维度中的部分空间维度对应的参考信号的测量反馈。例如，在测量反馈为非周期反馈时，收发模块403仅通过PUSCH来发送测量反馈结果。
在一个示例中，收发模块403还接收包含对特定空间维度对应的参考信号的非周期测量反馈请求的下行链路控制信息(DCI)或者随机接入响应(RAR)。当接收到该非周期测量反馈请求之后，用户设备将对请求中所包括的特定空间维度的参考信号进行非周期测量反馈。
其中，收发模块403可以被配置为在第一空间维度对应的参考信号测量反馈的上行子帧之后的第一个可用上行子帧上发送第二空间维度对应的参考信号测量反馈。当然，并不限于此，也可以在第二个、第三个等可用上行子帧上发送上述测量反馈。但是，应该理解，反馈的子帧越接近，实时性越好，反馈信息越准确。
综上所述，装置300和400可以支持对多个空间维度的下行参考信号的测量反馈，从而实现多个空间维度上的信道信息的获取，提高了系统性能。
在一个示例中，下行参考信号为信道状态信息参考信号(CSI-RS)，控制消息为无线资源控制(RRC)信令。例如，多个空间维度包括水平方向和垂直方向。如前所述，由于现有技术中仅对水平方向配置CSI-RS，相应的RRC信令中也仅针对水平方向定义。在存在水平方向和垂直方向两个空间维度的情况下，需要重新定义CSI-RS和RRC信令。
其中，RRC信令中包含具有传输模式信息单元形式的基站在水平和垂直空间维度上发送CSI-RS的指示。示例性地，RRC信令中的cqi-pmi-ConfigIndex参数指示对装置400针对水平和垂直空间维度的信道状态信息反馈的配置，其中，与垂直空间维度的信道状态信息反馈的配置对应的cqi-pmi-ConfigIndex参数的取值范围与水平空间维度的不同。 此外，RRC信令中的CSI-RS-Config中的SubframeConfig参数指示对不同维度的参考信号发送时间的配置，不同维度的参考信号的SubframeConfig参数的取值范围不同。
其中，关于CSI-RS的配置、CSI反馈的配置以及RRC信令的设置在第二实施例中进行了详细的描述，在此不再重复。
注意，在本申请中主要以LTE系统作为示例描述了本发明应用到LTE系统中的具体信令、流程等的实施例，但是，应该理解，本发明还可以应用于比如wimax等各种其他可应用MIMO技术的通信系统中，从而实现多维度的参考信号配置、信道信息反馈等。
<第四实施例>
在上文的实施方式中描述用于无线通信的装置的过程中，显然还公开了一些处理或方法。下文中，在不重复上文中已经讨论的一些细节的情况下给出这些方法的概要，但是应当注意，虽然这些方法在描述用于无线通信的装置的过程中公开，但是这些方法不一定采用所描述的那些部件或不一定由那些部件执行。例如，用于无线通信的装置的实施方式可以部分地或完全地使用硬件和/或固件来实现，而下面讨论的用于无线通信的方法可以完全由计算机可执行的程序来实现，尽管这些方法也可以采用用于无线通信的装置的硬件和/或固件。
图13示出了根据本申请的一个实施例的用于无线通信的方法的流程图，该方法包括：基于基站的天线配置对基站的下行参考信号在多个空间维度上分别进行配置(S11)；以及生成包含基站在多个空间维度上分别发送下行参考信号的指示的控制消息，以用于基站服务的通信设备(S12)。
在步骤S11中，可以将不同空间维度的下行参考信号配置为通过不同的天线端口来发送。还可以将不同空间维度的下行参考信号以相同的式样映射至不同的传输资源上，以便通信设备区分相应空间维度的下行参考信号，其中，传输资源对应于子帧或时隙中至少之一。通过使用不同的传输资源传输不同空间维度的下行参考信号，使得通信设备可以区分不同空间维度对应的下行参考信号。
在步骤S12中，还可以将基站对特定空间维度上的下行参考信号的发送参数以及/或者通信设备对特定空间维度上的下行参考信号的测量反馈参数包含于控制消息中。示例性地，发送参数可以包括特定空间维度对应 的参考信号端口配置参数、周期配置参数和子帧偏移信息中至少之一，以及反馈参数可以包括配置给通信设备进行相应于特定空间维度的参考信号的测量反馈周期配置参数以及子帧偏移信息中至少之一。其中，各个空间维度对应的参考信号的发送周期可以被设置为不同。各个空间维度对应的参考信号的测量反馈周期可以被设置为不同。当然，该发送周期和/或反馈周期也可以被设置为相同。
在一个示例中，上述方法在基站处执行，如图13中的虚线框所示，此时该方法还可以包括如下步骤：针对所述多个空间维度中的每一个空间维度，分别向通信设备发送该空间维度上的下行参考信号(S13)，以及从通信设备接收针对每一个空间维度的参考信号测量反馈(S14)。
其中，在步骤S13中在不同的子帧上发送各个空间维度对应的参考信号，并且在步骤S14中在不同的子帧上接收各个空间维度对应的测量反馈。
在一个示例中，在步骤S14中仅通过物理上行数据信道(PUSCH)接收多个空间维度中的部分空间维度对应的参考信号的测量反馈。其中，在步骤S12中还将对特定空间维度对应的参考信号的非周期测量反馈请求包含于下行链路控制信息或者随机接入响应中以用于所述通信设备。如前所述，对于周期性的测量反馈，可以通过PUCCH或PUSCH来接收测量反馈结果。
在步骤S14中，可以在第一空间维度对应的参考信号测量反馈的上行子帧之后的第一个可用上行子帧上接收第二空间维度对应的参考信号测量反馈。
作为一个示例，下行参考信号可以为信道状态信息参考信号(CSI-RS)，控制消息为无线资源控制(RRC)信令。多个空间维度包括水平方向和垂直方向。
在这种情况下，在步骤S11中，为水平信道状态信息参考信号配置第一天线端口组和为垂直信道状态信息参考信号配置第二天线端口组，其中，第一与第二天线端口组各自包含8个不同的天线端口。
在步骤S12中，将基站在水平和垂直空间维度上CSI-RS的指示以传输模式信息单元的形式包含于RRC信令中。
此外，还可以在步骤S12中利用RRC信令的cqi-pmi-ConfigIndex参数指示对通信设备针对水平和垂直空间维度的信道状态信息反馈的配 置，其中，与垂直空间维度的信道状态信息反馈的配置对应的cqi-pmi-ConfigIndex参数的取值与水平空间维度的不同。
还可以在步骤S12中利用RRC信令的CSI-RS-Config中的SubframeConfig参数指示对不同维度的参考信号发送时间进行配置，不同维度的参考信号的SubframeConfig参数的取值范围不同。
图14示出了根据本申请的另一个实施例的用于无线通信的方法的流程图，包括如下步骤：基于来自基站的控制消息，确定基站在多个空间维度上分别发送下行参考信号(S21)；以及响应于基站的测量指示，对相应空间维度上的下行参考信号进行测量并生成相应空间维度上的测量反馈信息(S23)。
其中，控制消息可以包括基站对特定空间维度上的下行参考信号的发送参数以及/或者用户设备对特定空间维度上的所述下行参考信号的测量反馈参数。例如，发送参数包括特定空间维度对应的参考信号端口配置参数、周期配置参数和子帧偏移信息中至少之一，以及反馈参数包括配置给用户设备进行相应于特定空间维度的参考信号的测量反馈周期配置参数以及子帧偏移信息中至少之一。其中，各个空间维度对应的参考信号的发送周期可以被设置为不同。各个空间维度对应的参考信号的测量反馈周期可以被设置为不同。当然，该发送周期和/或反馈周期也可以被设置为相同。
在步骤S21中还可以根据承载具有相同式样的下行参考信号的传输资源的不同来确定下行参考信号所对应的空间维度，其中，传输资源对应于子帧或时隙中至少之一。例如，可以根据承载下行参考信号的子帧的位置来确定下行参考信号所对应的空间维度。
在一个示例中，上述方法可以由用户设备执行，如图14中的虚线框所示，在这种情况下该方法还可以包括如下步骤：针对多个空间维度中的每一个空间维度，分别从基站接收该空间维度上的下行参考信号(S22)，以及向基站发送针对每一个空间维度的参考信号测量反馈(S24)。
其中，在步骤S22中在不同的子帧上接收各个空间维度对应的参考信号，以及在步骤S24中在不同的子帧上发送各个空间维度对应的测量反馈。
例如，在步骤S24中可以仅通过物理上行数据信道发送多个空间维度中的部分空间维度对应的参考信号的测量反馈。在步骤S22中还接收包含 对特定空间维度对应的参考信号的非周期测量反馈请求的下行链路控制信息或者随机接入响应。如前所述，对于周期性的测量反馈，可以通过PUCCH或PUSCH来发送测量反馈结果。
在步骤S24中可以在第一空间维度对应的参考信号测量反馈的上行子帧之后的第一个可用上行子帧上发送第二空间维度对应的参考信号测量反馈。
作为一个示例，下行参考信号为信道状态信息参考信号(CSI-RS)，控制消息为无线资源控制(RRC)信令。多个空间维度包括水平方向和垂直方向。
其中，RRC信令中包含具有传输模式信息单元形式的基站在水平和垂直空间维度上发送信道状态信息参考信号的指示。此外，RRC信令中的cqi-pmi-ConfigIndex参数指示对用户设备针对水平和垂直空间维度的信道状态信息反馈的配置，其中，与垂直空间维度的信道状态信息反馈的配置对应的cqi-pmi-ConfigIndex参数的取值范围与水平空间维度的不同。RRC信令中的CSI-RS-Config中的SubframeConfig参数指示对不同维度的参考信号发送时间的配置，不同维度的参考信号的SubframeConfig参数的取值范围不同。
注意，上述各个方法可以结合或单独使用，其细节在第一至第三实施例中已经进行了详细描述，在此不再重复。
<第五实施例>
在该实施例中将给出应用本公开的技术的eNB的示例。
(第一应用示例)
图15是示出可以应用本公开内容的技术的eNB的示意性配置的第一示例的框图。eNB 800包括一个或多个天线810以及基站设备820。基站设备820和每个天线810可以经由RF线缆彼此连接。
天线810中的每一个均包括单个或多个天线元件(诸如包括在多输入多输出(MIMO)天线中的多个天线元件)，并且用于基站设备820发送和接收无线信号。如图15所示，eNB 800可以包括多个天线810。例如，多个天线810可以与eNB 800使用的多个频带兼容。虽然图15示出其中eNB 800包括多个天线810的示例，但是eNB 800也可以包括单个天线 810。
基站设备820包括控制器821、存储器822、网络接口823以及无线通信接口825。
控制器821可以为例如CPU或DSP，并且操作基站设备820的较高层的各种功能。例如，控制器821根据由无线通信接口825处理的信号中的数据来生成数据分组，并经由网络接口823来传递所生成的分组。控制器821可以对来自多个基带处理器的数据进行捆绑以生成捆绑分组，并传递所生成的捆绑分组。控制器821可以具有执行如下控制的逻辑功能：该控制诸如为无线资源控制、无线承载控制、移动性管理、接纳控制和调度。该控制可以结合附近的eNB或核心网节点来执行。存储器822包括RAM和ROM，并且存储由控制器821执行的程序和各种类型的控制数据(诸如终端列表、传输功率数据以及调度数据)。
网络接口823为用于将基站设备820连接至核心网824的通信接口。控制器821可以经由网络接口823而与核心网节点或另外的eNB进行通信。在此情况下，eNB 800与核心网节点或其他eNB可以通过逻辑接口(诸如S1接口和X2接口)而彼此连接。网络接口823还可以为有线通信接口或用于无线回程线路的无线通信接口。如果网络接口823为无线通信接口，则与由无线通信接口825使用的频带相比，网络接口823可以使用较高频带用于无线通信。
无线通信接口825支持任何蜂窝通信方案(诸如长期演进(LTE)和LTE-先进)，并且经由天线810来提供到位于eNB 800的小区中的终端的无线连接。无线通信接口825通常可以包括例如基带(BB)处理器826和RF电路827。BB处理器826可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行层(例如L1、介质访问控制(MAC)、无线链路控制(RLC)和分组数据汇聚协议(PDCP))的各种类型的信号处理。代替控制器821，BB处理器826可以具有上述逻辑功能的一部分或全部。BB处理器826可以为存储通信控制程序的存储器，或者为包括被配置为执行程序的处理器和相关电路的模块。更新程序可以使BB处理器826的功能改变。该模块可以为插入到基站设备820的槽中的卡或刀片。可替代地，该模块也可以为安装在卡或刀片上的芯片。同时，RF电路827可以包括例如混频器、滤波器和放大器，并且经由天线810来传送和接收无线信号。
如图15所示，无线通信接口825可以包括多个BB处理器826。例如， 多个BB处理器826可以与eNB 800使用的多个频带兼容。如图15所示，无线通信接口825可以包括多个RF电路827。例如，多个RF电路827可以与多个天线元件兼容。虽然图15示出其中无线通信接口825包括多个BB处理器826和多个RF电路827的示例，但是无线通信接口825也可以包括单个BB处理器826或单个RF电路827。
(第二应用示例)
图16是示出可以应用本公开内容的技术的eNB的示意性配置的第二示例的框图。eNB 830包括一个或多个天线840、基站设备850和RRH860。RRH 860和每个天线840可以经由RF线缆而彼此连接。基站设备850和RRH 860可以经由诸如光纤线缆的高速线路而彼此连接。
天线840中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)并且用于RRH 860发送和接收无线信号。如图16所示，eNB 830可以包括多个天线840。例如，多个天线840可以与eNB830使用的多个频带兼容。虽然图16示出其中eNB 830包括多个天线840的示例，但是eNB 830也可以包括单个天线840。
基站设备850包括控制器851、存储器852、网络接口853、无线通信接口855以及连接接口857。控制器851、存储器852和网络接口853与参照图15描述的控制器821、存储器822和网络接口823相同。
无线通信接口855支持任何蜂窝通信方案(诸如LTE和LTE-先进)，并且经由RRH 860和天线840来提供到位于与RRH 860对应的扇区中的终端的无线通信。无线通信接口855通常可以包括例如BB处理器856。除了BB处理器856经由连接接口857连接到RRH 860的RF电路864之外，BB处理器856与参照图15描述的BB处理器826相同。如图16所示，无线通信接口855可以包括多个BB处理器856。例如，多个BB处理器856可以与eNB 830使用的多个频带兼容。虽然图16 示出其中无线通信接口855包括多个BB处理器856的示例，但是无线通信接口855也可以包括单个BB处理器856。
连接接口857为用于将基站设备850(无线通信接口855)连接至RRH860的接口。连接接口857还可以为用于将基站设备850(无线通信接口855)连接至RRH 860的上述高速线路中的通信的通信模块。
RRH 860包括连接接口861和无线通信接口863。
连接接口861为用于将RRH 860(无线通信接口863)连接至基站设 备850的接口。连接接口861还可以为用于上述高速线路中的通信的通信模块。
无线通信接口863经由天线840来传送和接收无线信号。无线通信接口863通常可以包括例如RF电路864。RF电路864可以包括例如混频器、滤波器和放大器，并且经由天线840来传送和接收无线信号。如图16所示，无线通信接口863可以包括多个RF电路864。例如，多个RF电路864可以支持多个天线元件。虽然图16示出其中无线通信接口863包括多个RF电路864的示例，但是无线通信接口863也可以包括单个RF电路864。
在图15和图16所示的eNB 800和eNB 830中，例如图1和2所描述的收发单元、收发模块可以由无线通信接口825以及无线通信接口855和/或无线通信接口863实现。功能的至少一部分也可以由控制器821和控制器851实现。例如，控制器821和控制器851可以通过执行参考信号配置模块201和控制消息生成模块202的功能来执行分别对多个空间维度的下行参考信号的配置以及控制消息的生成。
<第六实施例>
在该实施例中将给出应用本公开的技术的用户设备的示例。
(第一应用示例)
图17是示出可以应用本公开内容的技术的智能电话900的示意性配置的示例的框图。智能电话900包括处理器901、存储器902、存储装置903、外部连接接口904、摄像装置906、传感器907、麦克风908、输入装置909、显示装置910、扬声器911、无线通信接口912、一个或多个天线开关915、一个或多个天线916、总线917、电池918以及辅助控制器919。
处理器901可以为例如CPU或片上系统(SoC)，并且控制智能电话900的应用层和另外层的功能。存储器902包括RAM和ROM，并且存储数据和由处理器901执行的程序。存储装置903可以包括存储介质，诸如半导体存储器和硬盘。外部连接接口904为用于将外部装置(诸如存储卡和通用串行总线(USB)装置)连接至智能电话900的接口。
摄像装置906包括图像传感器(诸如电荷耦合器件(CCD)和互补金属氧化物半导体(CMOS))，并且生成捕获图像。传感器907可以包括 一组传感器，诸如测量传感器、陀螺仪传感器、地磁传感器和加速度传感器。麦克风908将输入到智能电话900的声音转换为音频信号。输入装置909包括例如被配置为检测显示装置910的屏幕上的触摸的触摸传感器、小键盘、键盘、按钮或开关，并且接收从用户输入的操作或信息。显示装置910包括屏幕(诸如液晶显示器(LCD)和有机发光二极管(OLED)显示器)，并且显示智能电话900的输出图像。扬声器911将从智能电话900输出的音频信号转换为声音。
无线通信接口912支持任何蜂窝通信方案(诸如LTE和LTE-先进)，并且执行无线通信。无线通信接口912通常可以包括例如BB处理器913和RF电路914。BB处理器913可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行用于无线通信的各种类型的信号处理。同时，RF电路914可以包括例如混频器、滤波器和放大器，并且经由天线916来传送和接收无线信号。无线通信接口912可以为其上集成有BB处理器913和RF电路914的一个芯片模块。如图17所示，无线通信接口912可以包括多个BB处理器913和多个RF电路914。虽然图17示出其中无线通信接口912包括多个BB处理器913和多个RF电路914的示例，但是无线通信接口912也可以包括单个BB处理器913或单个RF电路914。
此外，除了蜂窝通信方案之外，无线通信接口912可以支持另外类型的无线通信方案，诸如短距离无线通信方案、近场通信方案和无线局域网(LAN)方案。在此情况下，无线通信接口912可以包括针对每种无线通信方案的BB处理器913和RF电路914。
天线开关915中的每一个在包括在无线通信接口912中的多个电路(例如用于不同的无线通信方案的电路)之间切换天线916的连接目的地。
天线916中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)，并且用于无线通信接口912传送和接收无线信号。如图17所示，智能电话900可以包括多个天线916。虽然图17示出其中智能电话900包括多个天线916的示例，但是智能电话900也可以包括单个天线916。
此外，智能电话900可以包括针对每种无线通信方案的天线916。在此情况下，天线开关915可以从智能电话900的配置中省略。
总线917将处理器901、存储器902、存储装置903、外部连接接口 904、摄像装置906、传感器907、麦克风908、输入装置909、显示装置910、扬声器911、无线通信接口912以及辅助控制器919彼此连接。电池918经由馈线向图17所示的智能电话900的各个块提供电力，馈线在图中被部分地示为虚线。辅助控制器919例如在睡眠模式下操作智能电话900的最小必需功能。
在图17所示的智能电话900中，例如图11和12所描述的收发单元、收发模块可以由无线通信接口912实现。功能的至少一部分也可以由处理器901或辅助控制器919实现。例如，处理器901或辅助控制器919可以通过执行确定模块401和反馈生成模块402的功能而分别实现对多空间维度的每一个空间维度的下行参考信号的测量反馈。
(第二应用示例)
图18是示出可以应用本公开内容的技术的汽车导航设备920的示意性配置的示例的框图。汽车导航设备920包括处理器921、存储器922、全球定位系统(GPS)模块924、传感器925、数据接口926、内容播放器927、存储介质接口928、输入装置929、显示装置930、扬声器931、无线通信接口933、一个或多个天线开关936、一个或多个天线937以及电池938。
处理器921可以为例如CPU或SoC，并且控制汽车导航设备920的导航功能和另外的功能。存储器922包括RAM和ROM，并且存储数据和由处理器921执行的程序。
GPS模块924使用从GPS卫星接收的GPS信号来测量汽车导航设备920的位置(诸如纬度、经度和高度)。传感器925可以包括一组传感器，诸如陀螺仪传感器、地磁传感器和空气压力传感器。数据接口926经由未示出的终端而连接到例如车载网络941，并且获取由车辆生成的数据(诸如车速数据)。
内容播放器927再现存储在存储介质(诸如CD和DVD)中的内容，该存储介质被插入到存储介质接口928中。输入装置929包括例如被配置为检测显示装置930的屏幕上的触摸的触摸传感器、按钮或开关，并且接收从用户输入的操作或信息。显示装置930包括诸如LCD或OLED显示器的屏幕，并且显示导航功能的图像或再现的内容。扬声器931输出导航功能的声音或再现的内容。
无线通信接口933支持任何蜂窝通信方案(诸如LTE和LTE-先进)， 并且执行无线通信。无线通信接口933通常可以包括例如BB处理器934和RF电路935。BB处理器934可以执行例如编码/解码、调制/解调以及复用/解复用，并且执行用于无线通信的各种类型的信号处理。同时，RF电路935可以包括例如混频器、滤波器和放大器，并且经由天线937来传送和接收无线信号。无线通信接口933还可以为其上集成有BB处理器934和RF电路935的一个芯片模块。如图18所示，无线通信接口933可以包括多个BB处理器934和多个RF电路935。虽然图18示出其中无线通信接口933包括多个BB处理器934和多个RF电路935的示例，但是无线通信接口933也可以包括单个BB处理器934或单个RF电路935。
此外，除了蜂窝通信方案之外，无线通信接口933可以支持另外类型的无线通信方案，诸如短距离无线通信方案、近场通信方案和无线LAN方案。在此情况下，针对每种无线通信方案，无线通信接口933可以包括BB处理器934和RF电路935。
天线开关936中的每一个在包括在无线通信接口933中的多个电路(诸如用于不同的无线通信方案的电路)之间切换天线937的连接目的地。
天线937中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)，并且用于无线通信接口933传送和接收无线信号。如图18所示，汽车导航设备920可以包括多个天线937。虽然图18示出其中汽车导航设备920包括多个天线937的示例，但是汽车导航设备920也可以包括单个天线937。
此外，汽车导航设备920可以包括针对每种无线通信方案的天线937。在此情况下，天线开关936可以从汽车导航设备920的配置中省略。
电池938经由馈线向图18所示的汽车导航设备920的各个块提供电力，馈线在图中被部分地示为虚线。电池938累积从车辆提供的电力。
在图18示出的汽车导航设备920中，例如图11和12所描述的收发单元和收发模块可以由无线通信接口933实现。功能的至少一部分也可以由处理器921实现。例如，例如，处理器921可以通过执行确定模块401和反馈生成模块402的功能而分别实现对多空间维度的每一个空间维度的下行参考信号的测量反馈。
本公开内容的技术也可以被实现为包括汽车导航设备920、车载网络941以及车辆模块942中的一个或多个块的车载系统(或车辆)940。车 辆模块942生成车辆数据(诸如车速、发动机速度和故障信息)，并且将所生成的数据输出至车载网络941。
以上结合具体实施例描述了本发明的基本原理，但是，需要指出的是，对本领域的技术人员而言，能够理解本发明的方法和装置的全部或者任何步骤或部件，可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中，以硬件、固件、软件或者其组合的形式实现，这是本领域的技术人员在阅读了本发明的描述的情况下利用其基本电路设计知识或者基本编程技能就能实现的。
而且，本发明还提出了一种存储有机器可读取的指令代码的程序产品。所述指令代码由机器读取并执行时，可执行上述根据本发明实施例的方法。
相应地，用于承载上述存储有机器可读取的指令代码的程序产品的存储介质也包括在本发明的公开中。所述存储介质包括但不限于软盘、光盘、磁光盘、存储卡、存储棒等等。
在通过软件或固件实现本发明的情况下，从存储介质或网络向具有专用硬件结构的计算机(例如图19所示的通用计算机1900)安装构成该软件的程序，该计算机在安装有各种程序时，能够执行各种功能等。
在图19中，中央处理单元(CPU)1901根据只读存储器(ROM)1902中存储的程序或从存储部分1908加载到随机存取存储器(RAM)1903的程序执行各种处理。在RAM 1903中，也根据需要存储当CPU 1901执行各种处理等等时所需的数据。CPU 1901、ROM 1902和RAM 1903经由总线1904彼此连接。输入/输出接口1905也连接到总线1904。
下述部件连接到输入/输出接口1905：输入部分1906(包括键盘、鼠标等等)、输出部分1907(包括显示器，比如阴极射线管(CRT)、液晶显示器(LCD)等，和扬声器等)、存储部分1908(包括硬盘等)、通信部分1909(包括网络接口卡比如LAN卡、调制解调器等)。通信部分1909经由网络比如因特网执行通信处理。根据需要，驱动器1910也可连接到输入/输出接口1905。可移除介质1911比如磁盘、光盘、磁光盘、半导体存储器等等根据需要被安装在驱动器1910上，使得从中读出的计算机程序根据需要被安装到存储部分1908中。
在通过软件实现上述系列处理的情况下，从网络比如因特网或存储介 质比如可移除介质1911安装构成软件的程序。
本领域的技术人员应当理解，这种存储介质不局限于图19所示的其中存储有程序、与设备相分离地分发以向用户提供程序的可移除介质1911。可移除介质1911的例子包含磁盘(包含软盘(注册商标))、光盘(包含光盘只读存储器(CD-ROM)和数字通用盘(DVD))、磁光盘(包含迷你盘(MD)(注册商标))和半导体存储器。或者，存储介质可以是ROM 1902、存储部分1908中包含的硬盘等等，其中存有程序，并且与包含它们的设备一起被分发给用户。
还需要指出的是，在本发明的装置、方法和系统中，各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应该视为本发明的等效方案。并且，执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行，但是并不需要一定按时间顺序执行。某些步骤可以并行或彼此独立地执行。
最后，还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。此外，在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上虽然结合附图详细描述了本发明的实施例，但是应当明白，上面所描述的实施方式只是用于说明本发明，而并不构成对本发明的限制。对于本领域的技术人员来说，可以对上述实施方式作出各种修改和变更而没有背离本发明的实质和范围。因此，本发明的范围仅由所附的权利要求及其等效含义来限定。

Claims (37)

  1. 一种用于无线通信的装置，包括：
    一个或多个处理器，被配置为
    基于基站的天线配置对所述基站的下行参考信号在多个空间维度上分别进行配置；以及
    生成包含所述基站在多个空间维度上分别发送所述下行参考信号的指示的控制消息，以用于所述基站服务的通信设备。
  2. 根据权利要求1所述的装置，其中，所述一个或多个处理器被配置为将不同空间维度的下行参考信号配置为通过不同的天线端口来发送。
  3. 根据权利要求2所述的装置，其中，所述一个或多个处理器还被配置为将不同空间维度的下行参考信号以相同的式样映射至不同的传输资源上，以便所述通信设备区分相应空间维度的下行参考信号，其中，所述传输资源对应于子帧或时隙中至少之一。
  4. 根据权利要求1所述的装置，其中，所述一个或多个处理器还被配置为将所述基站对特定空间维度上的所述下行参考信号的发送参数以及/或者通信设备对特定空间维度上的所述下行参考信号的测量反馈参数包含于所述控制消息中。
  5. 根据权利要求4所述的装置，其中，所述发送参数包括特定空间维度对应的参考信号端口配置参数、周期配置参数和子帧偏移信息中至少之一，以及所述反馈参数包括配置给通信设备进行相应于特定空间维度的参考信号的测量反馈周期配置参数以及子帧偏移信息中至少之一。
  6. 根据权利要求5所述的装置，其中，各个空间维度对应的参考信号的发送周期被设置为不同。
  7. 根据权利要求5所述的装置，其中，各个空间维度对应的参考信号的测量反馈周期被设置为不同。
  8. 根据权利要求1至7中的任意一项所述的装置，其中，所述装置为所述基站，还包括收发单元，被配置为针对所述多个空间维度中的每一个空间维度，分别向所述通信设备发送该空间维度上的下行参考信号，以 及从所述通信设备接收针对每一个空间维度的参考信号测量反馈。
  9. 根据权利要求8所述的装置，其中，所述收发单元被配置为在不同的子帧上发送各个空间维度对应的参考信号，以及在不同的子帧上接收各个空间维度对应的测量反馈。
  10. 根据权利要求8所述的装置，其中，所述收发单元仅通过物理上行数据信道接收所述多个空间维度中的部分空间维度对应的参考信号的测量反馈。
  11. 根据权利要求10所述的装置，其中，所述一个或多个处理器还被配置为将对特定空间维度对应的参考信号的非周期测量反馈请求包含于下行链路控制信息或者随机接入响应中以用于所述通信设备。
  12. 根据权利要求11所述的装置，其中，所述收发单元被配置为在第一空间维度对应的参考信号测量反馈的上行子帧之后的第一个可用上行子帧上接收第二空间维度对应的参考信号测量反馈。
  13. 根据权利要求1至7中的任意一项所述的装置，其中，所述下行参考信号为信道状态信息参考信号，所述控制消息为无线资源控制信令。
  14. 根据权利要求13所述的装置，其中，所述多个空间维度包括水平方向和垂直方向。
  15. 根据权利要求14所述的装置，其中，所述一个或多个处理器被配置为为水平信道状态信息参考信号配置第一天线端口组和为垂直信道状态信息参考信号配置第二天线端口组，其中，第一与第二天线端口组各自包含8个不同的天线端口。
  16. 根据权利要求14所述的装置，其中，所述一个或多个处理器将所述基站在水平和垂直空间维度上发送所述信道状态信息参考信号的指示以传输模式信息单元的形式包含于所述无线资源控制信令中。
  17. 根据权利要求14所述的装置，其中，所述一个或多个处理器利用所述无线资源控制信令的cqi-pmi-ConfigIndex参数指示对通信设备针对水平和垂直空间维度的信道状态信息反馈的配置，其中，与垂直空间维度的信道状态信息反馈的配置对应的cqi-pmi-ConfigIndex参数的取值与水平空间维度的不同。
  18. 根据权利要求13所述的装置，其中，所述一个或多个处理器利用所述无线资源控制信令的CSI-RS-Config中的SubframeConfig参数指 示对不同维度的参考信号发送时间进行配置，不同维度的参考信号的SubframeConfig参数的取值范围不同。
  19. 一种用于无线通信的装置，包括：
    一个或多个处理器，被配置为
    基于来自基站的控制消息，确定所述基站在多个空间维度上分别发送下行参考信号；以及
    响应于所述基站的测量指示，对相应空间维度上的下行参考信号进行测量并生成相应空间维度上的测量反馈信息。
  20. 根据权利要求19所述的装置，其中，所述控制消息包括所述基站对特定空间维度上的下行参考信号的发送参数以及/或者所述装置对特定空间维度上的所述下行参考信号的测量反馈参数。
  21. 根据权利要求20所述的装置，其中，所述发送参数包括特定空间维度对应的参考信号端口配置参数、周期配置参数和子帧偏移信息中至少之一，以及所述反馈参数包括配置给所述装置进行相应于特定空间维度的参考信号的测量反馈周期配置参数以及子帧偏移信息中至少之一。
  22. 根据权利要求21所述的装置，其中，各个空间维度对应的参考信号的发送周期被设置为不同。
  23. 根据权利要求21所述的装置，其中，各个空间维度对应的参考信号的测量反馈周期被设置为不同。
  24. 根据权利要求19所述的装置，其中，所述一个或多个处理器还被配置为根据承载具有相同式样的下行参考信号的传输资源的不同来确定下行参考信号所对应的空间维度，其中，所述传输资源对应于子帧或时隙中至少之一。
  25. 根据权利要求24所述的位置，其中，所述一个或多个处理器被配置为根据承载下行参考信号的子帧的位置来确定下行参考信号所对应的空间维度。
  26. 根据权利要求19至25中任意一项所述的装置，其中，所述装置为用户设备，还包括收发单元，被配置为针对所述多个空间维度中的每一个空间维度，分别从所述基站接收该空间维度上的下行参考信号，以及向所述基站发送针对每一个空间维度的参考信号测量反馈。
  27. 根据权利要求26所述的装置，其中，所述收发单元被配置为在 不同的子帧上接收各个空间维度对应的参考信号，以及在不同的子帧上发送各个空间维度对应的测量反馈。
  28. 根据权利要求26所述的装置，其中，所述收发单元仅通过物理上行数据信道发送所述多个空间维度中的部分空间维度对应的参考信号的测量反馈。
  29. 根据权利要求28所述的装置，其中，所述收发单元还被配置为接收包含对特定空间维度对应的参考信号的非周期测量反馈请求的下行链路控制信息或者随机接入响应。
  30. 根据权利要求29所述的装置，其中，所述收发单元被配置为在第一空间维度对应的参考信号测量反馈的上行子帧之后的第一个可用上行子帧上发送第二空间维度对应的参考信号测量反馈。
  31. 根据权利要求19至25中任意一项所述的装置，其中，所述下行参考信号为信道状态信息参考信号，所述控制消息为无线资源控制信令。
  32. 根据权利要求31所述的装置，其中，所述多个空间维度包括水平方向和垂直方向。
  33. 根据权利要求32所述的装置，其中，所述无线资源控制信令中包含具有传输模式信息单元形式的所述基站在水平和垂直空间维度上发送所述信道状态信息参考信号的指示。
  34. 根据权利要求32所述的装置，其中，所述无线资源控制信令中的cqi-pmi-ConfigIndex参数指示对所述装置针对水平和垂直空间维度的信道状态信息反馈的配置，其中，与垂直空间维度的信道状态信息反馈的配置对应的cqi-pmi-ConfigIndex参数的取值范围与水平空间维度的不同。
  35. 根据权利要求31所述的装置，其中，所述无线资源控制信令中的CSI-RS-Config中的SubframeConfig参数指示对不同维度的参考信号发送时间的配置，不同维度的参考信号的SubframeConfig参数的取值范围不同。
  36. 一种用于无线通信的方法，包括：
    基于基站的天线配置对所述基站的下行参考信号在多个空间维度上分别进行配置；以及
    生成包含所述基站在多个空间维度上分别发送所述下行参考信号的 指示的控制消息，以用于所述基站服务的通信设备。
  37. 一种用于无线通信的方法，包括：
    基于来自基站的控制消息，确定所述基站在多个空间维度上分别发送下行参考信号；以及
    响应于所述基站的测量指示，对相应空间维度上的下行参考信号进行测量并生成相应空间维度上的测量反馈信息。
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