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WO2014161183A1 - 接收和发送参考信号的方法及装置、用户设备和基站 - Google Patents

接收和发送参考信号的方法及装置、用户设备和基站 Download PDF

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Publication number
WO2014161183A1
WO2014161183A1 PCT/CN2013/073727 CN2013073727W WO2014161183A1 WO 2014161183 A1 WO2014161183 A1 WO 2014161183A1 CN 2013073727 W CN2013073727 W CN 2013073727W WO 2014161183 A1 WO2014161183 A1 WO 2014161183A1
Authority
WO
WIPO (PCT)
Prior art keywords
reference signal
antenna port
subframe
configuration
antenna
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/073727
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English (en)
French (fr)
Inventor
王建国
周永行
刘江华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to JP2016505672A priority Critical patent/JP2016515777A/ja
Priority to CN201380004527.5A priority patent/CN104255053B/zh
Priority to KR1020157029954A priority patent/KR101790191B1/ko
Priority to EP17150654.6A priority patent/EP3220679B1/en
Priority to PCT/CN2013/073727 priority patent/WO2014161183A1/zh
Priority to EP13881274.8A priority patent/EP2961215B1/en
Publication of WO2014161183A1 publication Critical patent/WO2014161183A1/zh
Priority to US14/872,427 priority patent/US9979453B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0023Time-frequency-space
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022Site diversity; Macro-diversity
    • H04B7/024Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0452Multi-user MIMO systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0691Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H04L5/0046Determination of the number of bits transmitted on different sub-channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • H04L5/006Quality of the received signal, e.g. BER, SNR, water filling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/20Arrangements for detecting or preventing errors in the information received using signal quality detector
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035Resource allocation in a cooperative multipoint environment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094Indication of how sub-channels of the path are allocated

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for receiving and transmitting a reference signal, a user equipment, and a base station. Background technique
  • Reference signals can generally be classified into two categories: one for channel state measurement or channel quality measurement to achieve scheduling; and the other for coherent demodulation of received signals containing control or data information.
  • a reference signal for coherent demodulation is referred to as a demodulation reference signal (DMRS), which is also referred to as a UE (specific reference signal).
  • DMRS demodulation reference signal
  • UE specific reference signal
  • Channel estimation for demodulation of physical downlink shared channel (PDSCH); reference signal for channel state information measurement is called channel state information reference signal (CSI-RS) ), especially for the case of multi-antenna transmission.
  • the rank indicator, the pre-coding matrix indicator (PMI), the channel quantity indicator (CQI), and other feedback information may be derived based on channel measurements of the CSI-RS.
  • a cell-specific reference signal can be used for UE channel estimation to implement demodulation of a physical downlink control channel (PDCCH) and other common channels. Furthermore, the CRS can also be used for signal quality measurement such as reference signal received power (RSRP), reference signal received quality (RSRQ), and cell selection.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • LTE R8 can support 4 antenna ports
  • LTE R10-R11 can support 8 antenna ports.
  • Each antenna port may correspond to a physical antenna or a virtual antenna, where the virtual antenna is a weighted combination of multiple physical antennas.
  • the communication system can utilize pilot or reference signals to obtain channel estimates associated with the various antenna ports.
  • AAS base station provides further days The design freedom of the vertical direction of the line, so the AAS base station can be realized by its horizontal and vertical two-dimensional antenna array.
  • the antenna array structure may be different even if the number of antenna ports is the same. For example, 16 antenna ports can be implemented either by a 2x8 antenna array or by a 4x4 antenna array. Therefore, even channel probes of the same number may have different channel state measurements in different array configurations.
  • the present invention proposes a method and apparatus for receiving and transmitting a reference signal, a user equipment and a base station, which are directed to solving the problem of transmission and reception of reference signals caused by changes in antenna array structure and increase of antenna ports.
  • a method for receiving a reference signal including: receiving reference signal resource configuration information, where the reference signal resource configuration information includes information of an antenna port configuration and a reference signal subframe configuration, and the antenna port configuration indication An antenna port structure, the reference signal subframe configuration indicating a reference signal subframe for transmitting a reference signal on one or more antenna port groups, each of the antenna port groups including n index consecutive antenna ports, n being an antenna port And the reference signal sent by the base station is received according to the reference signal resource configuration information.
  • the information about the antenna port configuration indication is a total number N of the antenna ports, where N is a multiple of n, and n is a predefined positive integer.
  • the information about the antenna port configuration indication is the antenna port structure parameters m and n; or the information of the antenna port configuration indication is the antenna port Joint coding of structural parameters m and n.
  • the information that is configured in the reference signal subframe configuration includes a subframe period and a subframe offset, where the subframe offset Instructing to transmit one or more subframe positions of the reference signal during the subframe period.
  • the interval between the reference signal subframes is an integer of 5 or 10 or 20 or 40 or 80 subframes. Times.
  • the reference signal resource configuration information further includes information configured by a reference signal, where the reference signal configuration indicates each of the reference signal subframe periods a physical resource used by each of the antenna ports when the reference signal is transmitted on the reference signal subframe.
  • the reference signal configuration is configured to indicate that the index of the reference signal is sent continuously on different reference signal subframes in the reference signal subframe period Different resource units used by the antenna port.
  • a method for transmitting a reference signal including: transmitting reference signal resource configuration information to a UE, where the reference signal resource configuration information includes information of an antenna port configuration and a reference signal subframe configuration, the antenna port Configuring an indication antenna port structure, the reference signal subframe configuration indicating a reference signal subframe for transmitting a reference signal on one or more antenna port groups, each of the antenna port groups including n index consecutive antenna ports, n is
  • the antenna port structure parameter is configured to send the reference signal to the user equipment according to the reference signal resource configuration information.
  • the information about the antenna port configuration indication is the total number N of the antenna ports, where N is a multiple of n, and n is a predefined positive integer.
  • the information of the antenna port configuration indication is the antenna port structure parameters m and n; or the information of the antenna port configuration indication is the antenna port Joint coding of structural parameters m and n.
  • the information of the reference signal subframe configuration indication includes a subframe period and a subframe offset, where the subframe offset indication One or more subframe positions used by the reference signal during the subframe period.
  • the interval between the reference signal subframes is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • the reference signal resource configuration information further includes information configured by a reference signal, where the reference signal configuration indicates each of the reference signal subframe periods a physical resource used by each of the antenna ports when the reference signal is transmitted on the reference signal subframe.
  • the reference signal configuration indication is that the sending is performed on different reference signal subframes in the reference signal subframe period
  • the reference signal is indexed by different resource elements used by consecutive antenna ports.
  • an apparatus for receiving a reference signal including: a first receiving unit, configured to receive reference signal resource configuration information, where the reference signal resource configuration information includes information of an antenna port configuration and a reference signal subframe configuration
  • the antenna port configuration indicates an antenna port structure
  • the reference signal subframe configuration indicates a reference signal subframe for transmitting a reference signal on one or more antenna port groups, each of the antenna port groups including n indexes consecutive An antenna port, where n is an antenna port structure parameter
  • a second receiving unit configured to receive the reference signal sent by the base station according to the reference signal resource configuration information received by the first receiving unit.
  • the information about the antenna port configuration indication is the total number N of the antenna ports, where N is a multiple of n, and n is a predefined positive integer.
  • the information about the antenna port configuration indication is the antenna port structure parameters m and n; or the antenna port configuration indication information is the antenna port Joint coding of structural parameters m and n.
  • the information of the reference signal subframe configuration indication includes a subframe period and a subframe offset, where the subframe offset indication Transmitting one or more subframe positions of the reference signal during the subframe period.
  • the interval between the reference signal subframes is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • the reference signal resource configuration information further includes information configured by a reference signal, where the reference signal configuration indicates each of the reference signal subframe periods a physical resource used by each of the antenna ports when the reference signal is transmitted on the reference signal subframe.
  • the reference signal configuration is configured to indicate that the index of the reference signal is sent continuously on different reference signal subframes in the reference signal subframe period Different resource units used by the antenna port.
  • an apparatus for transmitting a reference signal including: a first sending unit, configured to send reference signal resource configuration information to a user equipment, where the reference signal resource configuration information includes an antenna port configuration and a reference signal subframe The configured information, the antenna port configuration indicates an antenna port structure, the reference signal subframe configuration indicates a reference signal subframe for transmitting a reference signal on one or more antenna port groups, and each of the antenna port groups includes n Index consecutive antenna ports, And n is an antenna port structure parameter, where the second sending unit is configured to send the reference signal to the user equipment according to the reference signal resource configuration information sent by the first sending unit.
  • the information about the antenna port configuration indication is the total number N of the antenna ports, where N is a multiple of n, and n is a predefined positive integer.
  • the information about the antenna port configuration indication is the antenna port structure parameters m and n; or the antenna port configuration indication information is the antenna port Joint coding of structural parameters m and n.
  • the information of the reference signal subframe configuration indication includes a subframe period and a subframe offset, where the subframe offset indication Transmitting one or more subframe positions of the reference signal during the subframe period.
  • the interval between the reference signal subframes is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • the reference signal resource configuration information further includes information configured by a reference signal, where the reference signal configuration indicates each of the reference signal subframe periods a physical resource used by each of the antenna ports when the reference signal is transmitted on the reference signal subframe.
  • the reference signal configuration is configured to indicate that the index of the reference signal is sent continuously on different reference signal subframes in the reference signal subframe period Different resource units used by the antenna port.
  • a user equipment including: a processor and a transceiver, where the transceiver is configured to receive reference signal resource configuration information under control of a processor, where the reference signal resource configuration information includes an antenna port configuration and a reference signal Information of a subframe configuration, the antenna port configuration indicating an antenna port structure, the reference signal subframe configuration indicating a reference signal subframe for transmitting a reference signal on one or more antenna port groups, each of the antenna port groups including And n is an antenna port structure parameter, and the transceiver is further configured to receive the reference signal sent by the base station according to the received reference signal resource configuration information.
  • the reference signal resource configuration information includes an antenna port configuration and a reference signal Information of a subframe configuration, the antenna port configuration indicating an antenna port structure, the reference signal subframe configuration indicating a reference signal subframe for transmitting a reference signal on one or more antenna port groups, each of the antenna port groups including And n is an antenna port structure parameter, and the transceiver is further configured to receive the reference signal sent by the base station according to
  • a base station including: a processor, configured to determine reference signal resource configuration information, where the reference signal resource configuration information includes information of an antenna port configuration and a reference signal subframe configuration, and the antenna port configuration indication antenna a port structure, the reference signal subframe configuration indicating a reference signal subframe for transmitting a reference signal on one or more antenna port groups, each of the antenna ends
  • the port group includes n index consecutive antenna ports, n is an antenna port structure parameter, and the transmitter is configured to send the reference signal resource configuration information and the reference signal to the user equipment.
  • the embodiment of the present invention transmits the reference signal based on the reference signal resource configuration information to implement signal quality or channel state information measurement.
  • the UE measures the channel based on the reference signal acquired from the base station and feeds back signal quality or channel state information, thereby enabling the communication system to adapt the antenna array structure and more antenna port number configurations for cell selection or MCS selection and scheduling, thereby improving The throughput of the system.
  • FIG. 1 is a flow chart of a method of receiving a reference signal in accordance with an embodiment of the present invention.
  • Figure 2 shows a uniform linear array antenna array of an AAS base station.
  • Figure 3 shows a cross-polarized antenna array of an AAS base station.
  • Figure 4 shows a uniform line array of an existing base station.
  • Figure 5 shows a cross-polarized line array of an existing base station.
  • FIG. 6 is a flow chart of a method of transmitting a reference signal in accordance with an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an apparatus for receiving a reference signal according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of an apparatus for transmitting a reference signal according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention. detailed description
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the UE may also be called a mobile terminal (Mobile Terminal), a mobile station (Mobile Station), etc., and may also include a relay, which may be connected to one or more via a radio access network (eg, RAN, Radio Access Network).
  • the core network communicates.
  • the UE exchanges voice and/or data with the radio access network.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (Node B) in WCDMA, or may be an evolved Node B in LTE (eNB or e-NodeB, evolved Node B) ).
  • BTS Base Transceiver Station
  • Node B base station
  • eNB evolved Node B
  • e-NodeB evolved Node B
  • a base station may support/manage one or more cells. When the UE needs to communicate with the network, it will select a cell to initiate network access.
  • Embodiments of the present invention provide a method for transmitting and receiving a reference signal for an antenna configuration of an AAS base station (particularly antenna configurations of antenna ports such as 8, 16, 32, and 64), wherein the reference signal can be used for channel quality or channel Status information measurements, or can be used for coherent demodulation.
  • the UE measures the channel based on the reference signal and feeds back channel quality or channel state information, or performs PDSCH demodulation based on the reference signal, and can adaptively configure the antenna array structure and more antenna port number configurations for cell selection or modulation and coding mode ( MCS, modulation coding scheme) and resource scheduling can improve system throughput.
  • MCS modulation and coding scheme
  • resource scheduling can improve system throughput.
  • backward compatibility is also an important consideration when designing a new LTE R12 system.
  • an LTE R12 system equipped with an AAS base station can ensure that legacy UEs of LTE R8 to R11 can be connected. Incoming and normal communication, especially to avoid interference with existing UEs. Embodiments of the invention may also satisfy the backward compatibility requirements of the system.
  • the method for the UE to receive the reference signal from the base station includes the following steps.
  • the reference signal resource configuration information includes information about an antenna port configuration and a reference signal subframe configuration, where the antenna port configuration indicates an antenna port structure, and the reference signal subframe configuration indication is in a Or transmitting reference signal subframes of the reference signal on the plurality of antenna port groups, wherein each of the antenna port groups includes n antenna ports whose indices are consecutive, and n is an antenna port structure parameter.
  • each antenna port is associated with or corresponds to a reference signal, and each antenna port is uniquely identified by a reference signal.
  • a reference signal subframe refers to a subframe in which a reference signal is transmitted.
  • the UE may receive reference signal resource configuration information from the base station by using high layer signaling or dynamic signaling, or the UE may further receive reference signal resource configuration information from the base station based on the cell identifier.
  • the embodiment of the present invention transmits the reference signal based on the reference signal resource configuration information to implement signal quality or channel state information measurement.
  • the UE measures the channel based on the reference signal acquired from the base station and feeds back signal quality or channel state information, thereby enabling the communication system to adapt the antenna array structure and more antenna port number configurations for cell selection or MCS selection and scheduling, thereby improving The throughput of the system.
  • the information of the antenna port configuration indication may be the total number of antenna ports N, where N is a multiple of n; at this time, the antenna port structure indicated by the antenna port configuration is determined by parameters N/n and n;
  • the antenna port parameter n may be predefined and known to the UE and the base station; in addition, the antenna port parameter n may also be notified to the UE by broadcast or multicast.
  • the antenna port structure parameter n may be UE specific or cell specific.
  • the information indicated by the antenna port configuration is a parameter m and a parameter n.
  • the antenna port structure indicated by the antenna port configuration is determined by the parameter m and the parameter n; for example, the antenna port structure is an antenna array in which the number of rows is m and the number of columns is n.
  • the UE can obtain the antenna port structure through the information of the antenna port configuration.
  • the antenna port structure may be an antenna array structure or correspond to an antenna array structure.
  • the base station only needs to indicate that the total number of UE antenna ports is N through the antenna port configuration, then the UE can determine that there are N/n antenna port groups.
  • the base station directly indicates to the UE the structural parameters m and n of the antenna port array through the antenna port configuration, and the antenna port structure corresponds to an antenna array of m rows and n columns. Therefore, the UE can learn the antenna port structure or the antenna array structure by referring to the signal resource configuration information.
  • the information of the reference signal subframe configuration indication may include a subframe period and a subframe offset, where the subframe offset indicates that one or more subframes of the reference signal are sent in the subframe period. position.
  • the subframe position may be uniformly distributed or equally distributed in one subframe period, and the subframe position may also be configured to be non-uniformly distributed in one subframe period as needed, thereby avoiding interaction with other configurations. interference.
  • the interval between the reference signal sub-frames for transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • each reference signal subframe transmits the reference signal on one or more antenna port groups No., wherein each of the antenna port groups includes n antenna ports whose indexes are consecutive, and n is an antenna port structure parameter.
  • n antenna ports whose indexes are consecutive may correspond to a horizontal row antenna port in an antenna array structure or an antenna port structure
  • an existing LTE R8-R11 system may use an antenna array structure or a horizontal row in an antenna port structure.
  • the antenna port ie the antenna port or reference signal of the existing LTE R8-R11 system, may be a subset of the LTE R12 and future systems configuring the AAS base station.
  • the LTE R8-R11 system is mainly designed for the antenna array deployed in the horizontal direction. Therefore, the above-mentioned n consecutive indexed antenna ports can be compatible with existing systems to ensure that the UEs of the existing system can normally access and communicate.
  • Physical resources occupied by reference signals within each reference signal sub-frame such as each physical resource block
  • a resource unit (RE, resource element) within (PRB, physical resource block) may be predefined and known to UEs and base stations (e.g., eNBs).
  • the reference signal resource configuration information may further include information of a reference signal configuration, wherein the reference signal configuration may indicate a used by each antenna port when the reference signal is transmitted on each reference signal subframe within a reference signal subframe period
  • Physical resources such as the RE used in the reference signal in each PRB, are not limited here.
  • the reference signal configuration of each of the reference signal subframes in the reference signal subframe period may be the same.
  • the n consecutive index antenna ports in one reference signal subframe within the reference signal subframe period and the n index indexes in another reference signal subframe within the reference signal subframe period are consecutive
  • the reference signals used by the antenna ports occupy the same physical resource unit RE location.
  • each reference signal sub-frame indicated by the reference signal configuration may be the same or different from each other in each PRB.
  • the RE position corresponding to the reference signal configuration in each PRB can use the RE location or code resource used by the existing LTE-R10 CSI RS, and will not be described here.
  • the UE may obtain an antenna port configuration, according to the antenna port configuration parameter indicated by the antenna port configuration, such as the total number of antenna ports N or structural parameters m and n; according to the received reference signal
  • the resource configuration the UE may obtain the reference signal subframe configuration, thereby obtaining the subframe period of the reference signal and the subframe offset of the reference signal subframe in the subframe period, and obtaining the position of the reference signal subframe, which may be in the reference signal
  • the frame receives reference signals transmitted on one or more antenna port groups, wherein each antenna port group includes n antenna ports, And each reference signal corresponds to one antenna port.
  • the location of the physical resources occupied by the reference signal in each reference signal sub-frame may be obtained according to predefined physical resources known by the UE and the base station, or may be based on the reference.
  • the physical resources indicated by the reference signal configuration further included in the configuration of the signal resource are obtained. How to obtain the reference signal according to the location or the code resource of the RE is a prior art, and details are not described herein.
  • the UE may receive the reference signal according to the reference signal resource configuration information, and may perform channel estimation based on the received reference signal, for example, using a least squares (LS) method or based on a minimum mean square error (MMSE, Minimum Mean)
  • LS least squares
  • MMSE minimum mean square error
  • the Squared Error criterion obtains a channel estimate corresponding to each antenna port; based on the channel estimation, the UE may determine channel state information and report the channel state information to the base station.
  • the UE may also obtain reference signal reception quality information, such as reference signal received power (RSRP, Reference Signal Received Power) or reference signal reception quality (RSRQ, Reference Signal), within the specified measurement bandwidth based on the received reference signal. Received Quality), etc., how to obtain RSRP or RSRQ based on the received reference signal is prior art, and is not mentioned here.
  • reference signal reception quality information such as reference signal received power (RSRP, Reference Signal Received Power) or reference signal reception quality (RSRQ, Reference Signal)
  • RSSQ Reference Signal reception quality
  • the embodiment of the present invention can obtain an antenna port array structure based on the reference signal resource configuration information, and receive one or more n-port antenna port groups on the reference signal subframe based on the structural parameter.
  • the transmitted reference signal wherein each antenna port group includes an antenna port index continuous, thereby facilitating the UE to implement channel state information measurement or signal reception quality measurement.
  • the scheme enables the transmission of the reference signal to be adaptive to the antenna array structure and more antenna port number configurations for cell selection or MCS selection and scheduling, thereby increasing the throughput of the system.
  • the index of the antenna port can continuously meet the backward compatibility requirements of the system.
  • the UE receives reference signal resource configuration information, wherein the reference signal resource configuration information includes information of an antenna port configuration and a reference signal subframe configuration.
  • the antenna port configuration indicates an antenna port structure
  • the reference signal subframe configuration indicates a reference signal subframe in which the reference signal is transmitted on one or more antenna port groups, where each of the antenna port groups includes n Index consecutive antenna ports. Then, the UE receives the reference signal sent by the base station, where the reference signal is obtained according to the reference signal resource configuration information.
  • the UE can use high-level signaling (such as radio resource control (RRC, Radio Resource).
  • RRC radio resource control
  • Radio Resource a radio resource control
  • the UE may obtain the reference signal resource configuration information based on a cell identifier (Cell ID).
  • Cell ID a cell identifier
  • a reference signal port often corresponds to a physical antenna or a virtual antenna, wherein the virtual antenna can be obtained by a weighted combination of a plurality of physical antennas.
  • the actual antenna configuration may have different antenna numbers, antenna array form (antenna arrangement), and antenna polarization.
  • the information of the antenna port configuration indication may also be the parameter m and the parameter n.
  • the antenna port structure indicated by the antenna port configuration is determined by the parameter m and the parameter n; for example, the antenna port structure is that the number of rows is m, and the number of columns is Antenna array of n.
  • Figures 2 and 3 show a uniform linear array antenna array and a cross-polarized antenna array for an AAS base station, respectively.
  • antenna array A (0, 1, 4, 5) is a 45° polarized co-polarized antenna group; (2, 3, 6, 7) is a -45° polarized co-polarized antenna. group.
  • antenna ports 0, 2, 4, and 6 are in the same column; antenna ports 1, 3, 5, and 7 are in the same column.
  • Antenna arrays B and C can be deduced by analogy.
  • the antenna port configuration parameter indicated by the antenna port configuration may use joint coding.
  • the antenna port number N or the indexes m and n or the number of rows m and the number of columns n of the antenna array are jointly coded, for example, The m, n and corresponding joint coding values shown in Table 1 are taken.
  • the antenna port configuration of the AAS base station should be the antenna of the conventional base station or the existing base station.
  • the array acts as a subset of it.
  • Figures 4 and 5 show different uniform line and cross-polarized line arrays of existing base stations, respectively.
  • antenna array A of Figure 3 contains antenna array B of Figure 5
  • antenna array B of Figure 3 contains antenna array C of Figure 5.
  • the system of the AAS base station ensures that the existing UE can work normally by configuring an appropriate antenna port.
  • the starting point of the number of the antenna port may be a fixed value X, such as the above 0 to 7 or 0 to 15, etc., and the corresponding numbers are sequentially x+0, . . . , ⁇ +7 or x+ 0, ⁇ +15.
  • the information of the reference signal subframe configuration indication may include a subframe period and a subframe offset, where the subframe offset indicates one or more subframe positions used by the reference signal in the subframe period,
  • the subframe positions may be uniformly distributed or equally distributed in one subframe period, and the subframe positions may also be configured to be non-uniformly distributed in one subframe period as needed, thereby avoiding interference with other configurations.
  • the interval between the subframes for transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • a total of 2 subframes are used for transmitting the reference signal, and one of the subframes has an n-port antenna port group of (15, 16, ..., 22); another subframe
  • a total of 2 subframes are used for transmitting the reference signal, and one of the subframes includes two n-port antenna port groups, respectively (15, . . . , 18), (23, ...,26);
  • the interval between subframes for transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • the foregoing sends one or more reference signal port groups in different subframes, and the port index of the transmitted reference signal port group is continuous, which can not only utilize the resource configuration of the reference signal of the existing system to extend to more antenna ports, but also can make After the expansion, the system maintains backward compatibility, so that the UE of the existing system can work normally.
  • the interval between subframes for transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes, so that the UE of the existing system can use the position measurement interference of the zero power reference signal to perform interference suppression. Or rate matching using the location of the zero power reference signal avoids severe interference to existing UEs.
  • the division of the antenna port group is not limited to the antenna port group containing 4 antenna ports, and may also be 2 or 8 antenna ports or other forms of antenna port groups.
  • the number of antenna ports included in each antenna port group is not limited to the above values, and can be flexibly selected according to the actual antenna configuration or deployment.
  • the above predefined antenna port group mapping and mapping indication information can enable the system to adapt to more antenna configurations and antenna array deployment.
  • the UE receives the reference signal sent by the base station based on the reference signal resource configuration information. Specifically, the UE may obtain the information of the antenna port configuration according to the received reference signal resource configuration information, as described above, to obtain the number of antenna ports N or obtain the indexes m and n or obtain the number of rows m and the number of columns of the antenna array. Since the reference signal corresponds to the antenna port, the number of reference signals can be obtained as N or the product of the m and n. The UE may obtain information about the configuration of the reference signal subframe according to the received reference signal resource configuration information, including a subframe period and a subframe offset, where the subframe offset indicates one of the reference signals occupied in the subframe period.
  • the UE can allocate according to the received reference signal resource
  • the information is configured to obtain information of a reference signal configuration, where the reference signal configuration indicates a physical resource used by each antenna port when each reference signal subframe transmits the reference signal in a reference signal subframe period, and thus can be used at the antenna port.
  • a reference signal is obtained on the physical resource.
  • the reference signal configuration may indicate different resource elements used by the index consecutive antenna ports that transmit the reference signals on different reference signal subframes within the reference signal subframe period.
  • the UE may determine and report channel state information or signal reception quality related information, such as RSRP, RSRQ, etc., to the base station based on the received reference signal.
  • channel state information or signal reception quality related information such as RSRP, RSRQ, etc.
  • the present invention proposes a design scheme of a reference signal configuration for an antenna configuration of an AAS base station, the reference signal configured to transmit one or more reference signal port groups in different subframes, and transmit a reference signal port group.
  • the internal port index is continuous, and not only can the resource configuration of the reference signal of the existing system be extended to more antenna ports, but also the system can be backward compatible after the expansion, so that the UE of the existing system can work normally.
  • the interval between subframes for transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes, so that the UE of the existing system can use the position measurement interference of the zero power reference signal to perform interference suppression.
  • the reference signal configured by the reference signal may be used for channel state information measurement. Based on the reference signal, the UE measures the channel and feeds back channel state information, which enables the system to adapt to more antenna configurations and antenna array deployment, for cell selection or MCS selection and scheduling, which in turn increases system throughput.
  • the reference signal and reference signal resource configuration information may come from different base stations, for example, a COMP scenario, where one base station transmits reference signal resource configuration information of all cooperative base stations, and each base station separately transmits an independent reference signal.
  • a method for transmitting a reference signal by a base station including the following steps, will be described in detail below with reference to FIG.
  • a reference signal subframe of the reference signal is transmitted on one or more antenna port groups, wherein each antenna port group includes n index consecutive antenna ports, and n is an antenna port structure parameter.
  • each antenna port is associated with or corresponds to a reference signal, and each antenna port is uniquely identified by a reference signal.
  • a reference signal subframe refers to a subframe in which a reference signal is transmitted.
  • the base station sends reference signal resource configuration information to the UE through high layer signaling or dynamic signaling; or sends reference signal resource configuration information to the UE based on the cell identifier.
  • the information about the antenna port configuration indication may be the total number of antenna ports ⁇ , and ⁇ is a multiple of ⁇ ; at this time, the antenna port structure indicated by the antenna port configuration is determined by parameters ⁇ / ⁇ and ⁇ ; at this time, the antenna port parameter ⁇ may be Predefined, known to the UE and the base station; in addition, the antenna port parameter ⁇ can also be notified to the UE by broadcast or multicast.
  • the antenna port structure parameter n may be UE specific or cell specific.
  • the information indicated by the antenna port configuration is the parameter m and the parameter n.
  • the antenna port structure indicated by the antenna port configuration is determined by the parameter m and the parameter n; for example, the antenna port structure is an antenna array in which the number of rows is m and the number of columns is n.
  • the information of the reference signal subframe configuration indication may include a subframe period and a subframe offset, where the subframe offset indicates transmitting one or more subframe positions of the reference signal in the subframe period,
  • the subframe positions may be hooked or equal-length distributed in one subframe period, and the subframe positions may also be configured to be non-uniformly distributed within one subframe period as needed, thereby avoiding interference with other configurations.
  • the interval between the subframes transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • Each reference signal subframe transmits the reference signal on one or more antenna port groups, wherein each of the antenna port groups includes n antenna ports whose indices are consecutive, and n is an antenna port structure parameter.
  • n antenna ports whose indexes are consecutive may correspond to a horizontal row antenna port in an antenna array structure or an antenna port structure
  • an existing LTE R8-R11 system may use an antenna array structure or a horizontal row in an antenna port structure.
  • the antenna port ie the antenna port or reference signal of the existing LTE R8-R11 system, may be a subset of the LTE R12 and future systems configuring the AAS base station.
  • the LTE R8-R11 system is mainly designed for the antenna array deployed in the horizontal direction. Therefore, the above-mentioned n consecutive indexed antenna ports can be compatible with existing systems to ensure that the UEs of the existing system can normally access and communicate.
  • the location of the physical resources (e.g., RE in each PRB) occupied by the reference signal within each reference signal sub-frame may be predefined and known to the UE and the base station (e.g., eNB).
  • the reference signal resource configuration information may further include information of a reference signal configuration, wherein the reference signal configuration may indicate that each reference signal subframe in the reference signal subframe period transmits the
  • the physical resources used by each antenna port in the reference signal, such as the RE used in the reference signal in each PRB, are not limited here.
  • the reference signal configurations of different reference signal subframes in the reference signal subframe period may be the same or different.
  • the n consecutive index antenna ports in one reference signal subframe within the reference signal subframe period and the n index indexes in another reference signal subframe within the reference signal subframe period are consecutive
  • the reference signals used by the antenna ports occupy the same or different physical resource unit RE locations.
  • each reference signal sub-frame indicated by the reference signal configuration may be the same or different from each other in each PRB.
  • the RE position corresponding to the reference signal configuration in each PRB can use the RE location or code resource used by the existing LTE-R10 CSI RS, and will not be described here.
  • the base station may further include determining, by the base station, the reference signal resource configuration according to the capability of the UE, for example, the capability of the UE to process only eight antenna ports.
  • the base station may also consider different UEs to use different antenna port groups or antenna port subsets according to the number of UEs in the serving cell.
  • the base station sends a reference signal to the UE according to the reference signal resource configuration information. Then, the base station sends a reference signal to the UE according to the reference signal resource configuration information, so that the UE determines channel state information (such as RI/PMI/CQI) or signal reception quality information (such as RSRP or RSRQ, etc.) based on the received reference signal. And receiving channel state information or signal reception quality information transmitted by the UE.
  • channel state information such as RI/PMI/CQI
  • signal reception quality information such as RSRP or RSRQ, etc.
  • the embodiment of the present invention can notify the antenna port array structure based on the reference signal resource configuration information transmission reference signal, and based on the structural parameter, the antenna in the reference signal subframe is in one or more n-ports.
  • a reference signal is sent on the port group, wherein each antenna port group includes an antenna port index continuous, thereby facilitating the UE to perform channel state information measurement or signal reception quality measurement.
  • the scheme enables the transmission of reference signals to be adaptive to the antenna array structure and more antenna port number configurations for cell selection or MCS selection and scheduling, thereby increasing the throughput of the system.
  • the index of the antenna port can continuously meet the backward compatibility requirements of the system.
  • the eNB sends reference signal resource configuration information to the UE, where the reference signal resource configuration information includes information of an antenna port configuration and a reference signal subframe configuration.
  • the antenna port configuration indicates an antenna port structure, and the reference signal subframe configuration is such that the reference signal is transmitted on one or more n-port antenna port groups in each of the reference signal subframes, wherein Each of the antenna port groups includes n index consecutive ports.
  • the eNB sends a reference signal to the UE, where the reference signal is sent according to the reference signal resource configuration information.
  • the eNB may send reference signal resource configuration information to the UE through high layer signaling (such as RRC signaling) or dynamic signaling (such as DCI), or the eNB may send reference signal resource configuration information based on the cell identifier.
  • high layer signaling such as RRC signaling
  • dynamic signaling such as DCI
  • the information of the antenna port configuration indication may also be the parameter m and the parameter n, where the product of m and n is the number of antenna ports N. Further, the indices m and n correspond to the number of rows and columns of the antenna array, respectively.
  • the antenna port configuration parameter indicated by the antenna port configuration may be reference signals transmitted by the eNB
  • the signaling of resource configuration information uses joint coding.
  • the eNB may send reference signal resource configuration information through RRC signaling or DCI, where the included antenna port is configured as a joint encoding of the parameter m and the parameter n or the number of rows m and the number of columns n of the antenna array.
  • the antenna ports of the AAS base station should have the antenna array of the conventional base station or the existing base station as a subset thereof.
  • the starting point of the number of the antenna port may be a fixed value X.
  • X the number of the antenna port
  • the information of the reference signal subframe configuration indication may include a subframe period and a subframe offset, where the subframe offset indicates transmitting one or more subframe positions of the reference signal in the subframe period,
  • the subframe positions may be hooked or equal-length distributed in one subframe period, and the subframe positions may also be configured to be non-uniformly distributed within one subframe period as needed, thereby avoiding interference with other configurations.
  • the interval between subframes for transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • n-port antenna port group 15, 16, ..., 22
  • n 4.
  • a total of 2 subframes are used for transmitting the reference signal, and one of the subframes includes two n-port antenna port groups, respectively (15, . . . , 18), (23, ...,26);
  • the resources used by the reference signal ports in each subframe that includes the reference signal include a resource unit RE or an OFDM symbol or a code resource, which may be a reference signal corresponding to an LTE RIO CSI RS n port configuration.
  • the resource unit RE or the OFDM symbol or the code resource used may be the resource unit RE or the OFDM symbol or the code resource used by the reference signal corresponding to the other n-port configuration, which is not limited herein.
  • different antenna port groups may use the same or different resources between different subframes.
  • the interval between subframes for transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • the foregoing sends one or more reference signal port groups in different subframes, and the port index of the transmitted reference signal port group is continuous, which can not only utilize the resource configuration of the reference signal of the existing system to extend to more antenna ports, but also can make After the expansion, the system maintains backward compatibility, so that the UE of the existing system can work normally.
  • the interval between subframes for transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes, so that the UE of the existing system can use the position measurement interference of the zero power reference signal to perform interference suppression. Or rate matching using the location of the zero power reference signal avoids severe interference to existing UEs.
  • the division of the antenna port group is not limited to an antenna port group having four antenna ports, and may also be two or eight or other constituent antenna port groups.
  • the number of antenna ports included in each antenna port group is not limited to the above values, and can be flexibly selected according to the actual antenna configuration or deployment.
  • the above predefined antenna port group mapping and mapping indication information can enable the system to adapt to more antenna configurations and antenna array deployment.
  • the eNB sends a reference signal to the UE according to the reference signal resource configuration information.
  • the eNB includes an antenna port structure indicated by the antenna port configuration, and a reference signal subframe indicated by the reference signal subframe configuration, where The reference signal is transmitted on one or more n-port antenna port groups.
  • the total number of antenna ports N is determined or the indices m and n are determined or the number of rows m and the number of columns n of the antenna array are obtained. Since the reference signal corresponds to the antenna port, it can be determined that the number of reference signals is N or the product of the m and n. Determining, by the eNB, information of the reference signal subframe configuration according to the reference signal resource configuration information, including a subframe period and a subframe offset, where the subframe offset indicates one or more subframes that transmit the reference signal in the subframe period , thereby determining the subframe position of the reference signal.
  • the eNB may further determine information of the reference signal configuration according to the reference signal resource configuration information, where the reference signal configuration may indicate that each antenna port is used when each reference signal subframe transmits the reference signal in the reference signal subframe period. Physical resources so that reference signals can be sent on the resources used by the reference signal port.
  • the eNB receives channel state information (such as CSI) or signal reception quality information (such as RSRP or RSRQ, etc.) reported by the UE, wherein the channel state information or signal reception quality information is obtained based on the reference signal.
  • channel state information such as CSI
  • signal reception quality information such as RSRP or RSRQ, etc.
  • the embodiment of the present invention provides a scheme for configuring and transmitting a reference signal for an antenna configuration of an AAS base station, where the scheme can configure a reference signal based on an antenna port array structure, and based on the structural parameter, the reference is used therein.
  • a reference signal is transmitted on an antenna port group that transmits one or more n-ports on a signal subframe, wherein each antenna port group includes an antenna port index that is continuous, and can not only utilize the resource configuration of the reference signal of the existing system to expand to more The antenna port, and can make the system maintain backward compatibility after expansion, so that the UE of the existing system can work normally.
  • the interval between the subframes for transmitting the reference signal is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes, so that the UE of the existing system can use the position measurement interference of the zero power reference signal to perform interference suppression. Or rate matching using the location of the zero power reference signal avoids severe interference to existing UEs.
  • the reference signal configured by the above reference signal can be used for channel state information measurement or signal reception quality measurement. The UE measures the channel based on the reference signal and feeds back channel state information or signal reception quality, thereby enabling the system to adapt more antenna configuration and antenna array deployment for cell selection or MCS selection and scheduling, so as to improve system throughput. .
  • the apparatus 70 for receiving a reference signal includes a first receiving unit 71 and a second receiving unit 72.
  • the first receiving unit 71 is configured to receive reference signal resource configuration information, where the reference signal resource configuration information includes information about an antenna port configuration and a reference signal subframe configuration, where the antenna port is Configuring an indication antenna port structure, the reference signal subframe configuration indicating a reference signal subframe for transmitting the reference signal on one or more antenna port groups, wherein each of the antenna port groups includes n antennas whose indices are consecutive Port, n is the antenna port structure parameter.
  • the second receiving unit 72 is configured to receive the reference signal sent by the base station according to the reference signal resource configuration information received by the first receiving unit 71.
  • the first receiving unit 71 may be configured to receive reference signal resource configuration information from the base station by using high layer signaling or dynamic signaling; or receive reference signal resource configuration information from the base station based on the cell identifier.
  • the information indicating the antenna port configuration indication may be the total number of antenna ports N, where N is a multiple of n; at this time, the antenna port structure indicated by the antenna port configuration is determined by parameters N/n and n; at this time, the antenna port parameter n may be It is predefined and known to the UE and the base station; in addition, the antenna port parameter n can also be notified to the UE by broadcast or multicast.
  • the antenna port structure parameter n may be UE specific or cell specific.
  • the information indicated by the antenna port configuration is the parameter m and the parameter n.
  • the antenna port structure indicated by the antenna port configuration is determined by the parameters m and n; for example, at this time, the antenna port structure is an antenna array in which the number of rows is m and the number of columns is n.
  • the information of the reference signal subframe configuration indication may include a subframe period and a subframe offset, where the subframe offset indicates that one or more subframes of the reference signal are sent in the subframe period.
  • the subframe position may be uniformly distributed or equal-length in one subframe period, and the subframe position may also be configured to be non-uniformly distributed in one subframe period as needed, thereby avoiding other configurations. Interference. Further, the interval between reference signal subframes is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • each reference signal subframe transmits the reference signal on one or more antenna port groups, wherein each of the antenna port groups includes n antenna ports whose indices are consecutive, and n is an antenna port structure parameter.
  • n antenna ports whose indexes are consecutive may correspond to a horizontal row antenna port in an antenna array structure or an antenna port structure
  • an existing LTE R8-R11 system may use an antenna array structure or a horizontal row in an antenna port structure.
  • the antenna port ie the antenna port or reference signal of the existing LTE R8-R11 system, may be a subset of the LTE R12 and future systems configuring the AAS base station.
  • the existing LTE R8-R11 system is mainly designed for the antenna array deployed in the horizontal direction. Therefore, the n consecutive antenna ports whose indexes are consecutive can be compatible with the existing system, so that the UE of the existing system can normally access and communicate.
  • the physical resources occupied by the reference signals within each reference signal sub-frame, such as the REs within each PRB, may be predefined, known to the UE and the base station.
  • the reference signal resource configuration information may further include information of a reference signal configuration, wherein the reference signal configuration may indicate a physics used by each antenna port when each reference signal subframe transmits the reference signal within a reference signal subframe period Resources, such as the RE used in the reference signal within each PRB, are not limited here.
  • the reference signal configuration of each of the reference signal subframes in the reference signal subframe period may be the same.
  • the n consecutive index antenna ports in one reference signal subframe within the reference signal subframe period and the n index indexes in another reference signal subframe within the reference signal subframe period are consecutive
  • the reference signals used by the antenna ports occupy the same physical resource unit RE location.
  • each reference signal sub-frame indicated by the reference signal configuration may be the same or different from each other in each PRB.
  • the RE position corresponding to the reference signal configuration in each PRB can use the RE location or code resource used by the existing LTE-R10 CSI RS, and will not be described here.
  • the embodiment of the present invention can obtain an antenna port array structure based on the reference signal resource configuration information, and send the antenna port group that receives one or more n-ports on the reference signal subframe based on the structural parameter.
  • the reference signal wherein each antenna port group contains an antenna port index continuous, thereby facilitating the UE to implement channel state information measurement or signal reception quality measurement.
  • the scheme enables the transmission of the reference signal to be adaptive to the antenna array structure and more antenna port number configurations for cell selection or MCS selection and scheduling, thereby increasing the throughput of the system.
  • the index of the antenna port can continuously meet the backward compatibility requirements of the system.
  • the means 80 for transmitting a reference signal includes a first transmitting unit 81 and a second transmitting unit 82.
  • the first sending unit 81 is configured to send reference signal resource configuration information to the UE, where the reference signal resource configuration information includes information of an antenna port configuration and a reference signal subframe configuration, and the antenna port configuration indicates an antenna port structure, where the reference
  • the signal subframe configuration indicates a reference signal subframe in which the reference signal is transmitted on one or more antenna port groups, wherein each antenna port group includes n index consecutive antenna ports, and n is an antenna port structure parameter.
  • the second sending unit 82 is configured to send a reference signal to the UE according to the reference signal resource configuration information sent by the first sending unit 81. It should be noted that each antenna port is associated with or corresponds to a reference signal, and each antenna port is uniquely identified by a reference signal.
  • a reference signal subframe refers to a subframe in which a reference signal is transmitted.
  • the first sending unit 81 is configured to send reference signal resource configuration information to the UE by using high layer signaling or dynamic signaling, or send reference signal resource configuration information to the UE based on the cell identifier.
  • the information indicating the antenna port configuration indication may be the total number N of the antenna ports, where N is a multiple of n; at this time, the antenna port structure indicated by the antenna port configuration is determined by parameters N/n and n.
  • the antenna port parameter n may be predefined and known to the UE and the base station; in addition, the antenna port parameter n may also be notified to the UE by broadcast or multicast.
  • the antenna port structure parameter n may be UE specific or cell specific.
  • the information indicating the antenna port configuration is the parameter m and the parameter n.
  • the antenna port structure indicated by the antenna port configuration is determined by the parameters m and n; for example, the antenna port structure is an antenna with the number of rows being m and the number of columns being n. Array.
  • the information of the reference signal subframe configuration indication may include a subframe period and a subframe offset, where the subframe offset indicates that one or more subframe positions of the reference signal are transmitted in the subframe period,
  • the subframe positions may be uniformly distributed or equally distributed in one subframe period, and the subframe positions may also be configured to be non-uniformly distributed in one subframe period as needed, thereby avoiding interference with other configurations.
  • the interval between the reference signal subframes is 5 or 10 or 20 or 40 or an integer multiple of 80 subframes.
  • Each of the reference signal subframes transmits the reference signal on one or more antenna port groups, wherein each of the antenna port groups includes n antenna ports whose indices are consecutive, and n is an antenna port configuration parameter.
  • n antenna ports whose indexes are consecutive may correspond to a horizontal row antenna port in an antenna array structure or an antenna port structure
  • an existing LTE R8-R11 system may use an antenna array structure or a horizontal row in an antenna port structure.
  • the antenna port ie the antenna port or reference signal of the existing LTE R8-R11 system, may be a subset of the LTE R12 and future systems configuring the AAS base station.
  • the LTE R8-R11 system is mainly designed for the antenna array deployed in the horizontal direction. Therefore, the above-mentioned n consecutive indexed antenna ports can be compatible with existing systems to ensure that the UEs of the existing system can normally access and communicate.
  • the location of physical resources (e.g., REs in each PRB) occupied by reference signals within each reference signal sub-frame may be predefined and known to the UE and the base station or eNB.
  • the reference signal resource configuration information may further include information configured by a reference signal, where the reference signal configuration may indicate that each antenna port is used when each of the reference signal subframes in the reference signal subframe period transmits the reference signal.
  • the physical resources, such as the RE used in the reference signal in each PRB, are not limited here.
  • the reference signal configuration of each of the reference signal subframes in the reference signal subframe period may be the same.
  • the n consecutive index antenna ports in one reference signal subframe within the reference signal subframe period and the n index indexes in another reference signal subframe within the reference signal subframe period are consecutive
  • the reference signals used by the antenna ports occupy the same physical resource unit RE location.
  • each reference signal sub-frame indicated by the reference signal configuration may be the same or different from each other in each PRB.
  • the RE position corresponding to the reference signal configuration in each PRB can use the RE location or code resource used by the existing LTE-R10 CSI RS, and will not be described here.
  • the base station may further include determining, by the base station, the reference signal resource configuration according to the capability of the UE, for example, the capability of the UE to process only eight antenna ports.
  • the base station may also consider different UEs to use different antenna port groups or antenna port subsets according to the number of UEs in the serving cell.
  • the embodiment of the present invention can notify the antenna port array structure based on the reference signal resource configuration information transmission reference signal, and based on the structural parameter, the antenna in the reference signal subframe is in one or more n-ports.
  • a reference signal is sent on the port group, wherein each antenna port group includes an antenna port index continuous, thereby facilitating the UE to perform channel state information measurement or signal reception quality measurement.
  • the scheme enables the transmission of reference signals to be adaptive to the antenna array structure and more antenna port number configurations for cell selection or MCS selection and scheduling, thereby increasing the throughput of the system.
  • the index of the antenna port can continuously meet the backward compatibility requirements of the system.
  • Figure 9 shows a user equipment 90, including a transceiver 91 and a processor, in accordance with an embodiment of the present invention.
  • the transceiver 91 is configured to receive reference signal resource configuration information from the base station under control of the processor 92, where the reference signal resource configuration information includes information of an antenna port configuration and a reference signal subframe configuration, and the antenna port configuration indication An antenna port structure, the reference signal subframe configuration indicating a reference signal subframe for transmitting the reference signal on one or more antenna port groups, wherein each of the antenna port groups includes n index consecutive antenna ports, n And being used as an antenna port structure parameter; and configured to receive a reference signal from the base station according to the received reference signal resource configuration information.
  • the embodiment of the present invention can obtain an antenna port array structure based on the reference signal resource configuration information, and receive one or more n-port antenna port groups on the reference signal subframe based on the structural parameter.
  • the transmitted reference signal wherein each antenna port group includes an antenna port index continuous, thereby facilitating the UE to implement channel state information measurement or signal reception quality measurement.
  • the solution enables the transmission of the reference signal to adapt to the antenna array structure and more antenna port number configurations for cell selection or MCS selection and scheduling, thereby improving the throughput of the system while meeting the backward compatibility requirements of the system.
  • FIG. 10 shows a base station 100 including a processor 101 and a transmitter 102 in accordance with an embodiment of the present invention.
  • the processor 101 is configured to determine reference signal resource configuration information, where the reference signal resource configuration information includes information of an antenna port configuration and a reference signal subframe configuration, the antenna port configuration indicates an antenna port structure, and the reference signal subframe configuration A reference signal subframe indicating the transmission of the reference signal on one or more antenna port groups, wherein each of the antenna port groups includes n index consecutive antenna ports, and n is an antenna port structure parameter.
  • the transmitter 102 is configured to send reference signal resource configuration information and a reference signal to the UE.
  • the embodiment of the present invention can indicate the antenna port array structure based on the reference signal resource configuration information transmission reference signal, and based on the structural parameter, the antenna port of the one or more n-ports on the reference signal subframe.
  • a reference signal is transmitted on the group, wherein each antenna port group includes an antenna port index continuous, thereby facilitating the UE to implement channel state information measurement or signal reception quality measurement.
  • the scheme enables the transmission of the reference signal to adapt to the antenna array structure and more antenna port number configurations for cell selection or MCS selection and scheduling, thereby increasing the throughput of the system while meeting the backward compatibility requirements of the system.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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Abstract

本发明实施例涉及接收和发送参考信号的方法及装置、用户设备和基站。其中,接收参考信号的方法包括:接收参考信号资源配置信息,其中参考信号资源配置信息包括天线端口配置和参考信号子帧配置的信息,天线端口配置指示天线端口结构,参考信号子帧配置指示在一个或多个天线端口组上发送参考信号的参考信号子帧;依据参考信号资源配置信息,接收参考信号。由此可见,本发明实施例中,UE基于从基站获取的参考信号测量信道并反馈信号质量或者信道状态信息,于是使得通信系统能够自适应天线阵列结构和更多的天线端口数配置,用于小区选择或者MCS选择和调度,进而提高系统的吞吐量。

Description

接收和发送参考信号的方法及装置、 用户设备和基站 技术领域
本发明涉及通信领域, 具体而言, 涉及接收和发送参考信号的方法及装 置、 用户设备和基站。 背景技术
参考信号通常可以分为两类: 一类用于信道状态测量或者信道质量测量 从而实现调度; 另一类则用于对含有控制或者数据信息的接收信号进行相干 解调。 例如, 用于相干解调的参考信号被称为解调参考信号 (DMRS , demodulation reference signals ) , 此参考信号又被称为用户设备 ( UE, user equipment )特定的参考信号 ( UE- specific reference signal ), 用于物理下行共 享信道(PDSCH, physical downlink shared channel )解调时的信道估计; 用 于信道状态信息测量的参考信号被称为信道状态信息参考信号 ( CSI-RS , channel state information reference signal ),特另 ll是针对多天线传输的情况。秩 指示 ( RI, rank indicator )、预编码巨阵指示 ( PMI, pre-coding matrix indicator ) 和信道质量指示(CQI, channel quantity indicator )以及其它反馈信息可以基 于 CSI-RS的信道测量导出。小区特定的参考信号( CRS , cell specific reference signal ) 可以用于 UE信道估计从而实现对物理下行控制信道(PDCCH , physical downlink control channel ) 以及其它公共信道的解调。 此夕卜, CRS还 可以用于参考信号接收功率 ( RSRP, reference signal received power ), 参考 信号接^:质量 ( RSRQ, reference signal received quality )等信号质量测量, 实现小区选择等功能。
现代通信系统广泛使用多天线, 以提高系统的容量和覆盖或者改善用户 的体验。 例如, 长期演进(LTE, Long Term Evolution ) R8系统可以支持 4个 天线端口, LTE R10-R11系统可以支持 8个天线端口。每个天线端口可以与一 个物理天线或者虚拟天线相对应, 其中虚拟天线是多个物理天线的加权组 合。 通信系统可以利用导频或者参考信号, 得到与各个天线端口相关联的信 道估计。
为了进一步提高频谱效率, 将引入更多的天线配置, 例如基于有源天线 系统(AAS, active antenna system ) 的天线配置。 AAS基站进一步提供了天 线垂直向的设计自由度, 因此 AAS基站可以通过其水平向和垂直向的二维天 线阵列实现。 对于 AAS基站而言, 即使天线端口的数量相同, 天线阵列结构 也可能不同。例如, 16个天线端口既可以由 2x8的天线阵列实现,也可以由 4x4 的天线阵列实现。 因此, 即使相同编号的天线端口在不同阵列结构中也可能 得到不同的信道状态测量。
现有技术中提供了多种获取发射天线端口数配置的方案,但是该配置信 息由于实际上针对水平向天线阵列设计, 因此无法自适应 AAS的天线阵列结 构, 此外, 现有系统最多只能支持 8个天线端口的配置。 也就是说, 现有技 术无法实现对 AAS天线阵列结构的自适应配置, 更无法支持多于 8个天线端 口的参考信号配置。 发明内容
本发明提出了接收和发送参考信号的方法及装置、 用户设备和基站, 旨 在解决天线阵列结构变化以及天线端口增加所引起的参考信号的发送和接 收问题。
第一方面, 提出了一种接收参考信号的方法, 包括: 接收参考信号资源 配置信息, 其中所述参考信号资源配置信息包括天线端口配置和参考信号子 帧配置的信息, 所述天线端口配置指示天线端口结构, 所述参考信号子帧配 置指示在一个或多个天线端口组上发送参考信号的参考信号子帧,每个所述 天线端口组包括 n个索引连续的天线端口, n为天线端口结构参数; 依据所 述参考信号资源配置信息, 接收基站发送的所述参考信号。
结合第一方面, 在第一方面的第一实施方式中, 所述天线端口配置指示 的信息为所述天线端口总数 N, 所述 N是 n的倍数, n为预定义的正整数。
结合第一方面, 在第一方面的第二实施方式中, 所述天线端口配置指示 的信息为所述天线端口结构参数 m和 n; 或者, 所述天线端口配置指示的信 息为所述天线端口结构参数 m和 n的联合编码。
结合第一方面或其各个实施方式, 在第一方面的第三实施方式中, 在所 述参考信号子帧配置指示的信息包括子帧周期和子帧偏移量, 其中所述子帧 偏移量指示在所述子帧周期内发送所述参考信号的一个或者多个子帧位置。
结合第一方面或其各个实施方式, 在第一方面的第四实施方式中, 所述 参考信号子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数 倍。
结合第一方面或其各个实施方式, 在第一方面的第五实施方式中, 所述 参考信号资源配置信息还包括参考信号配置的信息, 所述参考信号配置指示 参考信号子帧周期内每个所述参考信号子帧上发送所述参考信号时每个所 述天线端口所使用的物理资源。
结合第一方面的第五实施方式, 在第一方面的第六实施方式中, 所述参 考信号配置指示在所述参考信号子帧周期内不同参考信号子帧上发送所述 参考信号的索引连续的天线端口所使用的不同资源单元。
第二方面, 提出了一种发送参考信号的方法, 包括: 向 UE发送参考信 号资源配置信息, 其中所述参考信号资源配置信息包括天线端口配置和参考 信号子帧配置的信息, 所述天线端口配置指示天线端口结构, 所述参考信号 子帧配置指示在一个或多个天线端口组上发送参考信号的参考信号子帧,每 个所述天线端口组包括 n个索引连续的天线端口, n为天线端口结构参数; 根据所述参考信号资源配置信息, 向所述用户设备发送所述参考信号。
结合第二方面, 在第二方面的第一实施方式中, 所述天线端口配置指示 的信息为所述天线端口总数 N, 所述 N是 n的倍数, n为预定义的正整数。
结合第二方面, 在第二方面的第二实施方式中, 所述天线端口配置指示 的信息为所述天线端口结构参数 m和 n; 或者, 所述天线端口配置指示的信 息为所述天线端口结构参数 m和 n的联合编码。
结合第二方面或其各个实施方式, 在第二方面的第三实施方式中, 所述 参考信号子帧配置指示的信息包括子帧周期和子帧偏移量, 其中所述子帧偏 移量指示在所述子帧周期内所述参考信号使用的一个或者多个子帧位置。
结合第二方面或其各个实施方式, 在第二方面的第四实施方式中, 所述 参考信号子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数 倍。
结合第二方面或其各个实施方式, 在第二方面的第五实施方式中, 所述 参考信号资源配置信息还包括参考信号配置的信息, 所述参考信号配置指示 参考信号子帧周期内每个所述参考信号子帧上发送所述参考信号时每个所 述天线端口所使用的物理资源。
结合第二方面的第五实施方式, 在第二方面的第六实施方式中, 所述参 考信号配置指示在所述参考信号子帧周期内不同参考信号子帧上发送所述 参考信号的索引连续的天线端口所使用的不同资源单元。
第三方面, 提出了一种接收参考信号的装置, 包括: 第一接收单元, 用 于接收参考信号资源配置信息, 其中所述参考信号资源配置信息包括天线端 口配置和参考信号子帧配置的信息, 所述天线端口配置指示天线端口结构, 所述参考信号子帧配置指示在一个或多个天线端口组上发送参考信号的参 考信号子帧, 每个所述天线端口组包括 n个索引连续的天线端口, n为天线 端口结构参数; 第二接收单元, 用于依据由所述第一接收单元接收的所述参 考信号资源配置信息, 接收基站发送的所述参考信号。
结合第三方面, 在第三方面的第一实施方式中, 所述天线端口配置指示 的信息为所述天线端口总数 N, 所述 N是 n的倍数, n为预定义的正整数。
结合第三方面, 在第三方面的第二实施方式中, 所述天线端口配置指示 的信息为所述天线端口结构参数 m和 n; 或者, 所述天线端口配置指示的信 息为所述天线端口结构参数 m和 n的联合编码。
结合第三方面或其各个实施方式, 在第三方面的第三实施方式中, 所述 参考信号子帧配置指示的信息包括子帧周期和子帧偏移量, 其中所述子帧偏 移量指示在所述子帧周期内发送所述参考信号的一个或者多个子帧位置。
结合第三方面或其各个实施方式, 在第三方面的第四实施方式中, 所述 参考信号子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数 倍。
结合第三方面或其各个实施方式, 在第三方面的第五实施方式中, 所述 参考信号资源配置信息还包括参考信号配置的信息, 所述参考信号配置指示 参考信号子帧周期内每个所述参考信号子帧上发送所述参考信号时每个所 述天线端口所使用的物理资源。
结合第三方面的第五实施方式, 在第三方面的第六实施方式中, 所述参 考信号配置指示在所述参考信号子帧周期内不同参考信号子帧上发送所述 参考信号的索引连续的天线端口所使用的不同资源单元。
第四方面, 提出了一种发送参考信号的装置, 包括: 第一发送单元, 用 于向用户设备发送参考信号资源配置信息, 其中所述参考信号资源配置信息 包括天线端口配置和参考信号子帧配置的信息, 所述天线端口配置指示天线 端口结构, 所述参考信号子帧配置指示在一个或多个天线端口组上发送参考 信号的参考信号子帧, 每个所述天线端口组包括 n个索引连续的天线端口, n为天线端口结构参数; 第二发送单元, 用于根据所述第一发送单元发送的 所述参考信号资源配置信息, 向所述用户设备发送所述参考信号。
结合第四方面, 在第四方面的第一实施方式中, 所述天线端口配置指示 的信息为所述天线端口总数 N, 所述 N是 n的倍数, n为预定义的正整数。
结合第四方面, 在第四方面的第二实施方式中, 所述天线端口配置指示 的信息为所述天线端口结构参数 m和 n; 或者, 所述天线端口配置指示的信 息为所述天线端口结构参数 m和 n的联合编码。
结合第四方面或其各个实施方式, 在第四方面的第三实施方式中, 所述 参考信号子帧配置指示的信息包括子帧周期和子帧偏移量, 其中所述子帧偏 移量指示在所述子帧周期内发送所述参考信号的一个或者多个子帧位置。
结合第四方面或其各个实施方式, 在第四方面的第四实施方式中, 所述 参考信号子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数 倍。
结合第四方面或其各个实施方式, 在第四方面的第五实施方式中, 所述 参考信号资源配置信息还包括参考信号配置的信息, 所述参考信号配置指示 参考信号子帧周期内每个所述参考信号子帧上发送所述参考信号时每个所 述天线端口所使用的物理资源。
结合第四方面的第五实施方式, 在第四方面的第六实施方式中, 所述参 考信号配置指示在所述参考信号子帧周期内不同参考信号子帧上发送所述 参考信号的索引连续的天线端口所使用的不同资源单元。
第五方面, 提出了一种用户设备, 包括: 处理器和收发器, 收发器用于 在处理器的控制下接收参考信号资源配置信息, 其中所述参考信号资源配置 信息包括天线端口配置和参考信号子帧配置的信息, 所述天线端口配置指示 天线端口结构,所述参考信号子帧配置指示在一个或多个天线端口组上发送 参考信号的参考信号子帧,每个所述天线端口组包括 n个索引连续的天线端 口, n为天线端口结构参数; 所述收发器, 还用于依据接收到的所述参考信 号资源配置信息, 接收所述基站发送的所述参考信号。
第六方面, 提出了一种基站, 包括: 处理器, 确定参考信号资源配置信 息, 其中所述参考信号资源配置信息包括天线端口配置和参考信号子帧配置 的信息, 所述天线端口配置指示天线端口结构, 所述参考信号子帧配置指示 在一个或多个天线端口组上发送参考信号的参考信号子帧,每个所述天线端 口组包括 n个索引连续的天线端口, n为天线端口结构参数; 发送器, 用于 向用户设备发送所述参考信号资源配置信息和所述参考信号。
由此可见, 本发明实施例基于参考信号资源配置信息传输参考信号, 实 现信号质量或者信道状态信息测量。 UE基于从基站获取的参考信号测量信 道并反馈信号质量或者信道状态信息, 于是使得通信系统能够自适应天线阵 列结构和更多的天线端口数配置, 用于小区选择或者 MCS选择和调度, 进 而提高系统的吞吐量。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对本发明实施例中 所需要使用的附图作筒单地介绍, 显而易见地, 下面所描述的附图仅仅是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的 前提下, 还可以根据这些附图获得其他的附图。
图 1是根据本发明实施例的接收参考信号的方法的流程图。
图 2示出了 AAS基站的均匀线阵天线阵列。
图 3示出了 AAS基站的交叉极化天线阵列。
图 4示出了已有基站的均匀线阵。
图 5示出了已有基站的交叉极化线阵。
图 6是根据本发明实施例的发送参考信号的方法的流程图。
图 7是根据本发明实施例的接收参考信号的装置的结构示意图。
图 8是根据本发明实施例的发送参考信号的装置的结构示意图。
图 9是根据本发明实施例的用户设备的结构示意图。
图 10是根据本发明实施例的基站的结构示意图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例是本发明的一部分实施例, 而不 是全部实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创 造性劳动的前提下所获得的所有其他实施例, 都应属于本发明保护的范围。
本发明的技术方案, 可以应用于各种通信系统, 例如: 全球移动通讯系 统( GSM, Global System of Mobile communication ), 码分多址( CDMA, Code Division Multiple Access ) 系统, 宽带码分多址( WCDMA, Wideband Code Division Multiple Access Wireless ), 通用分组无线月良务技术( GPRS , General Packet Radio Service ), LTE等。
UE也可称之为移动终端 ( Mobile Terminal )、 移动台 ( Mobile Station ) 等,还可以包括中继( Relay ),可以经无线接入网(例如, RAN, Radio Access Network ) 与一个或多个核心网进行通信。 UE 与无线接入网交换语音和 /或 数据。
基站,可以是 GSM或 CDMA中的基站( BTS, Base Transceiver Station ), 也可以是 WCDMA中的基站(Node B ), 还可以是 LTE中的演进型节点 B ( eNB或 e-NodeB , evolved Node B )。 另夕卜, 一个基站可能支持 /管理一个或 多个小区(cell ), UE需要和网络通信时, 它将选择一个小区发起网络接入。
本发明实施例针对 AAS基站的天线配置(特别是 8、 16、 32和 64等天 线端口的天线配置)提出了一种发送和接收参考信号的方法, 其中所述参考 信号可用于信道质量或者信道状态信息测量, 或者可以用于相干解调。 UE 基于该参考信号测量信道并反馈信道质量或者信道状态信息, 或者基于该参 考信号进行 PDSCH解调, 能够自适应天线阵列结构和更多的天线端口数配 置, 以便进行小区选择或者调制编码方式( MCS , modulation coding scheme ) 的选择和资源调度, 可以提高系统的吞吐量。 此外, 需要指出的是, 在设计 新的 LTE R12系统时,后向兼容性也是一个重要的考虑,例如要求配备 AAS 基站的 LTE R12系统能够保证 LTE R8至 R11的已有( legacy ) UE能够接入 并正常通信, 特别是避免对已有 UE造成干扰。 本发明实施例还可以满足系 统的后向兼容性要求。
下面将结合图 1详细描述根据本发明实施例的传输参考信号的方法。对 于 UE而言, UE从基站接收参考信号的方法包括如下步骤。
11 , 接收参考信号资源配置信息, 其中所述参考信号资源配置信息包括 天线端口配置和参考信号子帧配置的信息, 所述天线端口配置指示天线端口 结构, 所述参考信号子帧配置指示在一个或多个天线端口组上发送所述参考 信号的参考信号子帧,其中每个所述天线端口组包括 n个其索引连续的天线 端口, n为天线端口结构参数。
需要指出的是, 每个天线端口与一个参考信号相关联或者相对应, 每个 天线端口由参考信号唯一识别。 参考信号子帧是指发送参考信号的子帧。 例如, UE可以通过高层信令或动态信令从基站接收参考信号资源配置 信息, 或者 UE还可以基于小区标识从基站接收参考信号资源配置信息。
12, 依据所述参考信号资源配置信息, 接收参考信号。
由此可见, 本发明实施例基于参考信号资源配置信息传输参考信号, 实 现信号质量或者信道状态信息测量。 UE基于从基站获取的参考信号测量信 道并反馈信号质量或者信道状态信息, 于是使得通信系统能够自适应天线阵 列结构和更多的天线端口数配置, 用于小区选择或者 MCS选择和调度, 进 而提高系统的吞吐量。
根据本发明的实施例, 天线端口配置指示的信息可以是天线端口总数 N, 其中 N是 n 的倍数; 此时, 天线端口配置指示的天线端口结构由参数 N/n和 n确定; 此时, 天线端口参数 n可以是预定义的, 为 UE和基站所共 知; 另外, 天线端口参数 n也可以通过广播或者组播通知给 UE。 天线端口 结构参数 n可以是 UE特定的, 也可以是小区特定的。
可选地,作为另一实施例,天线端口配置指示的信息是参数 m和参数 n。 此时, 天线端口配置指示的天线端口结构由参数 m和参数 n确定; 例如, 天 线端口结构为行数是 m、 列数是 n的天线阵列。
这样, 通过天线端口配置的信息, UE 可以获得天线端口结构。 其中所 述天线端口结构可以是天线阵列结构或者与天线阵列结构相对应。
具体而言, 若 UE已获知每个天线端口组有 n个天线端口, 那么基站只 要通过天线端口配置指示 UE天线端口总数为 N, 那么 UE就能确定其中有 N/n个天线端口组。 或者, 基站直接通过天线端口配置向 UE指示天线端口 阵列的结构参数 m和 n, 此时天线端口结构对应于一个 m行与 n列的天线 阵列。 于是, UE通过参考信号资源配置信息可以获知天线端口结构或者天 线阵列结构。
此外, 所述参考信号子帧配置指示的信息可以包括子帧周期和子帧偏移 量, 其中所述子帧偏移量指示在所述子帧周期内发送所述参考信号的一个或 者多个子帧位置。所述子帧位置可以在一个子帧周期内均勾分布或者等长分 布, 所述子帧位置也可以根据需要配置成在一个子帧周期内非均勾分布, 从 而避免与其它配置之间的干扰。 进一步地, 发送所述参考信号的参考信号子 帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍。
一般地,每个参考信号子帧在一个或多个天线端口组上发送所述参考信 号, 其中每个所述天线端口组包括 n个其索引连续的天线端口, n为天线端 口结构参数。
其中, n个其索引连续的天线端口可以与天线阵列结构或者天线端口结 构中的水平方向一行天线端口相对应, 已有 LTE R8-R11系统可以使用天线 阵列结构或者天线端口结构中的水平方向一行天线端口,即已有 LTE R8-R11 系统的天线端口或者参考信号可以是配置 AAS基站的 LTE R12以及未来系 统的子集。 已有 LTE R8-R11系统主要针对水平方向部署的天线阵列设计, 因此, 上述 n个其索引连续的天线端口可以与已有系统兼容, 保证已有系统 的 UE能够正常接入并通信。
每个参考信号子帧内参考信号占有的物理资源, 如每个物理资源块
( PRB , physical resource block ) 内的资源单元 ( RE, resource element ), 可 以是预定义的, 为 UE和基站(如 eNB )所公知。
此外, 参考信号资源配置信息还可以包括参考信号配置的信息, 其中所 述参考信号配置可以指示参考信号子帧周期内在每个参考信号子帧上发送 所述参考信号时每个天线端口所使用的物理资源, 如每个 PRB 内参考信号 使用的 RE, 此处不做限定。
所述参考信号子帧周期内每个所述参考信号子帧的参考信号配置可以 相同。 例如, 在参考信号子帧周期内的一个参考信号子帧内的所述 n个其索 引连续的天线端口与参考信号子帧周期内的另一个参考信号子帧内所述 n个 其索引连续的天线端口所使用的参考信号占有相同的物理资源单元 RE位 置。
需要说明的是, 参考信号配置所指示的每个参考信号子帧内不同的物理 资源块 PRB上的 RE相对于每个 PRB内的位置可以相同, 也可以不同。 每 个 PRB内参考信号配置对应的 RE位置可以采用现有 LTE-R10 CSI RS所使 用的 RE位置或者码资源, 此处不赘述。
在 12中,依据所接收的参考信号资源配置,UE可以得到天线端口配置, 根据天线端口配置所指示的天线端口结构参数,例如天线端口总数 N或者结 构参数 m和 n; 依据所接收的参考信号资源配置, UE可以得到参考信号子 帧配置,从而获知参考信号的子帧周期和子帧周期内参考信号子帧的子帧偏 移量, 并获得参考信号子帧的位置, 进而可以在参考信号子帧接收一个或者 多个天线端口组上发送的参考信号,其中每个天线端口组包括 n个天线端口, 且每个参考信号对应于一个天线端口。
此外, 每个参考信号子帧内参考信号占有的物理资源 (如每个 PRB 内 参考信号使用的 RE ) 的位置可以根据 UE和基站所公知的预定义的物理资 源得到,也可以根据所述参考信号资源配置中进一步包含的参考信号配置所 指示的物理资源得到, 如何根据 RE的位置或者码资源得到参考信号为现有 技术, 此处不赘述。
UE可以依据所述参考信号资源配置信息接收到参考信号, 进而可以基 于所接收的参考信号进行信道估计, 例如利用最小二乘(LS , Least Square ) 方法或者基于最小均方误差 (MMSE, Minimum Mean Squared Error ) 准则 得到各个天线端口对应的信道估计; 基于所述信道估计, UE可以确定信道 状态信息并向所述基站报告所述信道状态信息。
此外, UE还可以基于所接收到的参考信号, 在所指定的测量带宽内得 到参考信号接收质量信息, 例如参考信号接收功率(RSRP, Reference Signal Received Power )或者参考信号接收质量(RSRQ, Reference Signal Received Quality )等,如何基于所接收的参考信号得到 RSRP或者 RSRQ为现有技术, 此处不赞述。
由此可见, 本发明实施例基于参考信号资源配置信息, 可以获取天线端 口阵列结构, 并基于所述结构参数在其中所述参考信号子帧上接收一个或者 多个 n-端口的天线端口组上发送的参考信号,其中每个天线端口组包含的天 线端口索引连续, 从而便于 UE实现信道状态信息测量或者信号接收质量测 量。所述方案使得参考信号的发送能够自适应天线阵列结构和更多的天线端 口数配置, 用于小区选择或者 MCS选择和调度, 进而提高系统的吞吐量。 同时, 天线端口的索引连续能够满足系统的后向兼容性要求。
在一个具体实施例中, UE接收参考信号资源配置信息, 其中参考信号 资源配置信息包括天线端口配置和参考信号子帧配置的信息。所述天线端口 配置指示天线端口结构, 所述参考信号子帧配置指示在在一个或者多个天线 端口组上发送所述参考信号的参考信号子帧, 其中每个所述天线端口组包含 n个索引连续的天线端口。 接着, UE接收基站发送的参考信号, 其中参考 信号是根据所述参考信号资源配置信息得到的。
具体地, UE可以通过高层信令(如无线资源控制( RRC, Radio Resource
Control ) 信令) 或动态信令 (如下行控制信息 (DCI , Downlink Control Information ) )接收 eNB通知的参考信号资源配置信息; 或者, UE可以基于 小区标识(Cell ID )得到所述参考信号资源配置信息。
一个参考信号端口往往与一个物理天线或者虚拟天线相对应, 其中虚拟 天线可以通过多个物理天线的加权组合得到。 实际的天线配置可能具有不同 的天线数目、 天线阵列形式(天线排列方式) 以及天线极化等。
天线端口配置指示的信息可以是天线端口总数 N, 其中 N是 n的倍数; 此时, 天线端口配置指示的天线端口结构由参数 N/n和 n确定; 此时, 天线 端口参数 n可以是预定义的, 例如 n =4, 为 UE和基站所共知。
或者, 天线端口配置指示的信息也可以是参数 m和参数 n, 此时, 天线 端口配置指示的天线端口结构由参数 m和参数 n确定; 例如,天线端口结构 为行数是 m、 列数是 n的天线阵列。
图 2和图 3分别示出了 AAS基站的均匀线阵天线阵列以及交叉极化天 线阵列。
以图 2中的各个均匀线性阵列为例, 天线阵列 A、 B、 C对应的索引分 别为 ( m,n ) = (2,4)、 ( m,n ) = (2,8)、 ( m,n ) = (4,4)。
以图 3中的各个交叉极化天线阵列为例, 天线阵列 A、 B、 C对应的索 引分别为 ( m,n ) = (2,4)、 ( m,n ) = (2,8)、 ( m,n ) = (4,4); 其中, 两组不同极 化天线可以位于同一列的位置。 例如, 以天线阵列 A为例, (0, 1 , 4, 5 ) 为 45°极化的同极化天线组; (2, 3 , 6, 7 ) 为 -45°极化的同极化天线组。 0 与 2、 1与 3、 4与 6、 5与 7位于相同的位置, 从而天线端口 0、 2、 4和 6 位于相同的列; 天线端口 1、 3、 5和 7位于相同的列。 天线阵列 B和 C可 以依此类推。
进一步地, 所述天线端口配置指示的天线端口结构参数 (如天线端口总 数数 N或者所述索引 m和 n或者所述天线阵列的行数 m和列数 n )可以使 用联合编码。 例如, 在 UE接收的参考信号资源配置信息的 RRC信令或者 DCI中对天线端口数 N或者所述索引 m和 n或者所述天线阵列的行数 m和 列数 n分别进行一下联合编码, 例如表 1所示的 m、 n以及对应的联合编码 取值。
表 1 索引 m和 n的联合编码
m和 n联合编码的值 索引或者天线阵列行数 索引或者天线阵列列数 m n 0 1 1
1 1 4
2 1 8
3 2 4
4 4 2
5 4 4
6 4 8
7 8 4
8 8 8 需要指出的是, 为了后向兼容常规或者已有( legacy )基站(如 LTE R8- R10系统 eNB )配置的天线端口, AAS基站的天线端口配置应该把常规基站 或者已有基站的天线阵列作为其子集。
图 4和图 5分别示出了已有基站不同的均匀线阵和交叉极化线阵。例如 , 图 3中天线阵列 A含有图 5中天线阵列 B、再如图 3中天线阵列 B含有图 5 中天线阵列 C。 这样可以保证传统系统(例如 LTE R8- R10系统) 的 UE能 够接入配备 AAS基站的系统, AAS基站的系统通过配置合适的天线端口保 证已有 UE能够正常工作。
此外, 需要说明的是, 天线端口的编号的起点可以是一个固定值 X , 例 如上述 0至 7或者 0至 15等,对应的编号依次为 x+0, . . . , χ+7或者 x+0, χ+15。 例如, χ=15 或者其它值, 可以根据实际需要进行调整, 此处不做限 定。具体地,以 16个天线为例,假定对应的参考信号端口依次为 15、 16
30。
所述参考信号子帧配置指示的信息可以包括子帧周期和子帧偏移量, 其 中所述子帧偏移量指示在所述子帧周期内所述参考信号使用的一个或者多 个子帧位置, 所述子帧位置可以在一个子帧周期内均勾分布或者等长分布, 所述子帧位置也可以根据需要配置成在一个子帧周期内非均匀分布,从而避 免与其它配置之间的干扰。 进一步地, 发送所述参考信号的子帧之间的间隔 为 5或者 10或者 20或者 40或者 80个子帧的整数倍。
例如, 在子帧周期内, 共有 2个子帧用于发送所述参考信号, 则其中一 个子帧含有的 η-端口天线端口组为 (15,16, ...,22 ); 另一个子帧含有的 η- 端口天线端口组为 (23,...,30 ), 其中 η = 8。 或者, 在子帧周期内, 共有 4个子帧用于发送所述参考信号, 则其中 4 个不同子帧含有的 n-端口天线端口组分别为 ( 15,...,18 ) , ( 19,...,22 ) , ( 23,...,26 ), ( 27,...,30 ), 其中 n = 4。
或者, 在子帧周期内, 共有 2个子帧用于发送所述参考信号, 则其中一 个子帧含有两个 n-端口天线端口组, 分别为 ( 15,...,18 ), ( 23,...,26 ); 另一 个子帧含有两个 n-端口天线端口组, 分别为 ( 19,...,22 ), ( 27,...,30 ), 其中 n = 4。
利用上述方法, 可以进一步地扩展到更多的天线端口数, 同时, 能够保 证后向兼容已有系统, 如 LTE-R10系统。
进一步地,发送参考信号的子帧之间的间隔为 5或者 10或者 20或者 40 或者 80个子帧的整数倍。
上述在不同子帧内发送一个或者多个参考信号端口组, 并且发送的参考 信号端口组内端口索引连续, 不仅可以利用已有系统的参考信号的资源配置 扩展到更多天线端口, 而且可以使得扩展之后系统保持后向兼容性, 从而使 得已有系统的 UE能够正常工作。 此外, 发送参考信号的子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍,可以使得已有系统的 UE 能够利用零功率参考信号的位置测量干扰从而进行干扰抑制, 或者利用零功 率参考信号的位置进行速率匹配避免对已有 UE产生的严重干扰。 需要进一 步指出的是, 天线端口组的划分不限于含有 4个天线端口的天线端口组, 还 可以是 2个或 8个天线端口或者其他构成形式的天线端口组。 同时, 每个天 线端口组内含有的天线端口数也不限于上述取值,可以根据实际的天线配置 或者部署灵活选择。 上述预定义的天线端口组映射以及映射指示信息, 可以 使得系统能够自适应更多的天线配置和天线阵列部署。
进一步地, UE基于参考信号资源配置信息接收基站发送的参考信号。 具体地, UE可以根据所接收的参考信号资源配置信息得到天线端口配置的 信息, 如上所述为得到天线端口数 N或者得到所述索引 m和 n或者得到天 线阵列的行数 m和列数 n, 由于参考信号与天线端口相对应, 从而可以得到 参考信号的个数为 N或者为所述 m和 n的乘积。 UE可以根据所接收的参考 信号资源配置信息得到参考信号子帧配置的信息, 包括子帧周期和子帧偏移 量, 所述子帧偏移量指示在所述子帧周期内参考信号占有的一个或者多个子 帧, 从而得到参考信号的子帧位置。 UE可以根据所接收的参考信号资源配 置信息得到参考信号配置的信息, 所述参考信号配置指示参考信号子帧周期 内每个参考信号子帧发送所述参考信号时每个天线端口所使用的物理资源, 从而可以在天线端口所使用的物理资源上得到参考信号。 具体地, 参考信号 配置可以指示在参考信号子帧周期内不同参考信号子帧上发送参考信号的 索引连续的天线端口所使用的不同资源单元。
最后, UE 可以基于所接收的参考信号确定并向基站报告信道状态信息 或者信号接收质量相关的信息, 例如 RSRP、 RSRQ等。
综上所述, 本发明针对 AAS基站的天线配置提出了一种参考信号配置 的设计方案, 该参考信号配置在不同子帧内发送一个或者多个参考信号端口 组, 并且发送的参考信号端口组内端口索引连续, 不仅可以利用已有系统的 参考信号的资源配置扩展到更多天线端口, 而且可以使得扩展之后系统保持 后向兼容性, 从而使得已有系统的 UE能够正常工作。 此外, 发送参考信号 的子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍, 可 以使得已有系统的 UE能够利用零功率参考信号的位置测量干扰从而进行干 扰抑制, 或者利用零功率参考信号的位置进行速率匹配避免从而对已有 UE 产生的严重干扰。上述参考信号配置的参考信号,可用于信道状态信息测量, UE基于该参考信号, 测量信道并反馈信道状态信息, 可以使得系统能够自 适应更多的天线配置和天线阵列部署, 用于小区选择或 MCS选择和调度, 进而提高系统的吞吐量。
容易理解, 参考信号和参考信号资源配置信息可能来自不同的基站, 例 如 COMP 场景, 由其中一个基站发送所有协作基站的参考信号资源配置信 息, 各个基站各自发送独立的参考信号。
下面将结合图 6 详细描述根据本发明实施例的基站发送参考信号的方 法, 包括如下步骤。
61 , 向 UE发送参考信号资源配置信息, 其中所述参考信号资源配置信 息包括天线端口配置和参考信号子帧配置的信息, 所述天线端口配置指示天 线端口结构, 所述参考信号子帧配置指示在一个或多个天线端口组上发送所 述参考信号的参考信号子帧, 其中每个天线端口组包括 n个索引连续的天线 端口, n为天线端口结构参数。
需要指出的是, 每个天线端口与一个参考信号相关联或者相对应, 每个 天线端口由参考信号唯一识别。 参考信号子帧是指发送参考信号的子帧。 例如 ,基站通过高层信令或动态信令向 UE发送参考信号资源配置信息; 或者基于小区标识, 向 UE发送参考信号资源配置信息。
其中,天线端口配置指示的信息可以是天线端口总数 Ν, Ν是 η的倍数; 此时, 天线端口配置指示的天线端口结构由参数 Ν/η和 η确定; 此时, 天线 端口参数 η可以是预定义的, 为 UE和基站所共知; 另外, 天线端口参数 η 也可以通过广播或者组播通知给 UE。 天线端口结构参数 n可以是 UE特定 的, 也可以是小区特定的。
或者, 天线端口配置指示的信息是参数 m和参数 n。 此时, 天线端口配 置指示的天线端口结构由参数 m和参数 n确定; 例如,天线端口结构为行数 是 m、 列数是 n的天线阵列。
参考信号子帧配置指示的信息可以包括子帧周期和子帧偏移量, 其中所 述子帧偏移量指示在所述子帧周期内发送所述参考信号的一个或者多个子 帧位置, 所述子帧位置可以在一个子帧周期内均勾分布或者等长分布, 所述 子帧位置也可以根据需要配置成在一个子帧周期内非均匀分布,从而避免与 其它配置之间的干扰。
进一步地,发送所述参考信号的子帧之间的间隔为 5或者 10或者 20或 者 40或者 80个子帧的整数倍。
每个参考信号子帧在一个或多个天线端口组上发送所述参考信号, 其中 每一个所述天线端口组包括 n个其索引连续的天线端口, n为天线端口结构 参数。
其中, n个其索引连续的天线端口可以与天线阵列结构或者天线端口结 构中的水平方向一行天线端口相对应, 已有 LTE R8-R11系统可以使用天线 阵列结构或者天线端口结构中的水平方向一行天线端口,即已有 LTE R8-R11 系统的天线端口或者参考信号可以是配置 AAS基站的 LTE R12以及未来系 统的子集。 已有 LTE R8-R11系统主要针对水平方向部署的天线阵列设计, 因此, 上述 n个其索引连续的天线端口可以与已有系统兼容, 保证已有系统 的 UE能够正常接入并通信。
每个参考信号子帧内参考信号占有的物理资源 (如每个 PRB中的 RE ) 的位置可以是预定义的, 为 UE和基站 (如 eNB )所公知。
此外, 参考信号资源配置信息还可以包括参考信号配置的信息, 其中所 述参考信号配置可以指示参考信号子帧周期内每个参考信号子帧发送所述 参考信号时每个天线端口所使用的物理资源, 如每个 PRB 内参考信号使用 的 RE, 此处不做限定。
所述参考信号子帧周期内不同参考信号子帧的参考信号配置可以相同 或者不同。 例如, 在参考信号子帧周期内的一个参考信号子帧内的所述 n个 其索引连续的天线端口与参考信号子帧周期内的另一个参考信号子帧内所 述 n个其索引连续的天线端口所使用的参考信号占有相同或者不同的物理资 源单元 RE位置。
需要说明的是, 参考信号配置所指示的每个参考信号子帧内不同的物理 资源块 PRB上的 RE相对于每个 PRB内的位置可以相同, 也可以不同。 每 个 PRB内参考信号配置对应的 RE位置可以采用现有 LTE-R10 CSI RS所使 用的 RE位置或者码资源, 此处不赘述。
此外,需要进一步指出的是,在向 UE发送参考信号资源配置信息之前, 还可以包括基站根据 UE的能力为 UE确定参考信号资源配置,例如某些 UE 只能处理 8个天线端口的能力。 此外, 基站还可以根据服务小区内 UE的数 目考虑不同的 UE使用不同的天线端口组或者天线端口子集。
62, 基站根据所述参考信号资源配置信息向所述 UE发送参考信号。 于是, 基站根据所述参考信号资源配置信息向所述 UE发送参考信号, 以便 UE基于所接收的参考信号确定信道状态信息(如 RI/PMI/CQI )或者信 号接收质量信息 (如 RSRP或者 RSRQ等 ), 并接收 UE发送的信道状态信 息或者信号接收质量信息。
由此可见, 本发明实施例基于参考信号资源配置信息传输参考信号, 可 以通知天线端口阵列结构, 并基于所述结构参数在其中所述参考信号子帧上 在一个或者多个 n-端口的天线端口组上发送参考信号,其中每个天线端口组 包含的天线端口索引连续, 从而便于 UE实现进行信道状态信息测量或者信 号接收质量测量。所述方案使得参考信号的发送能够自适应天线阵列结构和 更多的天线端口数配置, 用于小区选择或者 MCS选择和调度, 进而提高系 统的吞吐量。 同时, 天线端口的索引连续能够满足系统的后向兼容性要求。
在一个具体实施例中, eNB向 UE发送参考信号资源配置信息, 其中参 考信号资源配置信息包括天线端口配置和参考信号子帧配置的信息。所述天 线端口配置指示天线端口结构, 所述参考信号子帧配置使得在每个所述参考 信号子帧内在一个或者多个 n-端口的天线端口组上发送所述参考信号,其中 每个所述天线端口组包含 n个索引连续的端口。 然后, eNB向 UE发送参考 信号, 其中所述参考信号根据所述参考信号资源配置信息发送。
具体地, eNB可以通过高层信令(如 RRC信令)或者动态信令(如 DCI ) 向 UE发送参考信号资源配置信息,或者 eNB可以基于小区标识发送参考信 号资源配置信息。
具体地, 天线端口配置指示的信息可以是天线端口数 N, 其中 N为 n 的倍数; 此时, 天线端口配置指示的天线端口结构由参数 N/n和 n确定; 此 时, 天线端口参数 n可以是预定义的, 例如 n =4, 为 UE和基站所共知。
或者, 天线端口配置指示的信息也可以是参数 m和参数 n, 其中 m和 n 的乘积为天线端口数 N。进一步地, 索引 m和 n分别对应于天线阵列的行数 和列数。
进一步地,天线端口配置指示的天线端口结构参数(如天线端口总数 N, 或者所述索引 m和 n,或者所述天线阵列的行数 m和列数 n )可以在所述 eNB 发送的参考信号资源配置信息的信令使用联合编码。 例如, eNB 可以通过 RRC信令或者 DCI发送参考信号资源配置信息, 其中包含的天线端口配置 为参数 m和参数 n或者所述天线阵列的行数 m和列数 n的联合编码。
需要指出的是, 为了后向兼容常规或者已有基站(如 LTE R8至 R10系 统 eNB ) 配置的天线端口, AAS基站的天线端口应该把常规基站或者已有 基站的天线阵列作为其子集。
此外, 需要说明的是, 天线端口的编号的起点可以是一个固定值 X , 例 如 x=15时, 以 16个天线为例, 对应的天线端口依次为 15、 16 30。
参考信号子帧配置指示的信息可以包括子帧周期和子帧偏移量, 其中所 述子帧偏移量指示在所述子帧周期内发送所述参考信号的一个或者多个子 帧位置, 所述子帧位置可以在一个子帧周期内均勾分布或者等长分布, 所述 子帧位置也可以根据需要配置成在一个子帧周期内非均匀分布,从而避免与 其它配置之间的干扰。 进一步地, 发送参考信号的子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍。
例如, 在子帧周期内, 共有 2个子帧用于发送所述参考信号, 则其中一 个子帧含有的 n-端口天线端口组为 (15,16, ...,22 ); 另一个子帧含有的 n- 端口天线端口组为 (23,...,30 ), 其中 n = 8。
或者, 在子帧周期内, 共有 4个子帧用于发送所述参考信号, 则其中 4 个不同子帧含有的 n-端口天线端口组分别为 ( 15,...,18 ) , ( 19,...,22 ) , ( 23,...,26 ), ( 27,...,30 ), 其中 n = 4。
或者, 在子帧周期内, 共有 2个子帧用于发送所述参考信号, 则其中一 个子帧含有两个 n-端口天线端口组, 分别为 ( 15,...,18 ), ( 23,...,26 ); 另一 个子帧含有两个 n-端口天线端口组, 分别为 ( 19,...,22 ), ( 27,...,30 ), 其中 n = 4。
利用上述方法, 可以进一步地扩展到更多的天线端口数, 同时, 能够保 证后向兼容已有系统, 如 LTE-R10系统。
在上述各个实施例中 , 所述每个含有参考信号的子帧内的参考信号端口 所使用的资源包括资源单元 RE或者 OFDM符号或者码资源, 可以是 LTE RIO CSI RS n端口配置对应的参考信号使用的资源单元 RE或者 OFDM符号 或者码资源, 也可以是其它 n端口配置对应的参考信号使用的资源单元 RE 或者 OFDM符号或者码资源, 此处不做限定。
此外, 不同的子帧之间, 不同的天线端口组可以使用相同的或者不同的 资源。 进一步地, 发送参考信号的子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍。
上述在不同子帧内发送一个或者多个参考信号端口组, 并且发送的参考 信号端口组内端口索引连续, 不仅可以利用已有系统的参考信号的资源配置 扩展到更多天线端口, 而且可以使得扩展之后系统保持后向兼容性, 从而使 得已有系统的 UE能够正常工作。 此外, 发送参考信号的子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍,可以使得已有系统的 UE 能够利用零功率参考信号的位置测量干扰从而进行干扰抑制, 或者利用零功 率参考信号的位置进行速率匹配避免对已有 UE产生的严重干扰。 需要进一 步指出的是, 天线端口组的划分不限于含有 4个天线端口的天线端口组, 还 可以是 2个或 8个或者其他构成形式的天线端口组。 同时, 每个天线端口组 内含有的天线端口数不限于上述取值, 可以根据实际的天线配置或者部署灵 活选择。 上述预定义的天线端口组映射以及映射指示信息, 可以使得系统能 够自适应更多的天线配置和天线阵列部署。
eNB根据所述参考信号资源配置信息向 UE发送参考信号。
具体地, eNB根据所发送的参考信号资源配置信息, 包括天线端口配置 所指示的天线端口结构、 参考信号子帧配置所指示的参考信号子帧, 在所述 一个或者多个 n-端口的天线端口组上发送所述参考信号。
如上所述为确定天线端口总数 N或者确定所述索引 m和 n或者得到天 线阵列的行数 m和列数 n。 由于参考信号与天线端口相对应, 从而可以确定 参考信号的个数为 N或者为所述 m和 n的乘积。 eNB根据参考信号资源配 置信息确定参考信号子帧配置的信息, 包括子帧周期和子帧偏移量, 所述子 帧偏移量指示在所述子帧周期内发送参考信号的一个或者多个子帧,从而确 定参考信号的子帧位置。 此外, eNB还可以根据参考信号资源配置信息确定 参考信号配置的信息,所述参考信号配置可以指示参考信号子帧周期内每个 参考信号子帧发送所述参考信号时每个天线端口所使用的物理资源,从而可 以在参考信号端口所使用的资源上发送参考信号。
最后, eNB接收 UE报告的信道状态信息 (如 CSI )或者信号接收质量 信息 (如 RSRP或者 RSRQ等), 其中所述信道状态信息或者信号接收质量 信息基于所述的参考信号得到。
综上所述, 本发明实施例针对 AAS基站的天线配置提出了一种配置并 发送参考信号的方案, 该方案可以基于天线端口阵列结构配置参考信号, 并 基于所述结构参数在其中所述参考信号子帧上发送一个或者多个 n-端口的 天线端口组上发送参考信号, 其中每个天线端口组包含的天线端口索引连 续, 不仅可以利用已有系统的参考信号的资源配置扩展到更多天线端口, 而 且可以使得扩展之后系统保持后向兼容性, 从而使得已有系统的 UE能够正 常工作。此外,发送参考信号的子帧之间的间隔为 5或者 10或者 20或者 40 或者 80个子帧的整数倍, 可以使得已有系统的 UE能够利用零功率参考信 号的位置测量干扰从而进行干扰抑制, 或者利用零功率参考信号的位置进行 速率匹配避免对已有 UE产生的严重干扰。 上述参考信号配置的参考信号可 用于信道状态信息测量或者信号接收质量测量。 UE基于该参考信号测量信 道, 并反馈信道状态信息或者信号接收质量, 从而使得系统能够自适应更多 的天线配置和天线阵列部署, 用于小区选择或者 MCS选择和调度, 以便提 高系统的吞吐量。
以下将结合图 7描述根据本发明实施例的接收参考信号的装置。 如图 7 所示,接收参考信号的装置 70包括第一接收单元 71和第二接收单元 72。其 中, 第一接收单元 71用于接收参考信号资源配置信息, 其中所述参考信号 资源配置信息包括天线端口配置和参考信号子帧配置的信息, 所述天线端口 配置指示天线端口结构, 所述参考信号子帧配置指示在一个或多个天线端口 组上发送所述参考信号的参考信号子帧, 其中每个所述天线端口组包括 n个 其索引连续的天线端口, n为天线端口结构参数。第二接收单元 72用于依据 由所述第一接收单元 71接收的所述参考信号资源配置信息, 接收基站发送 的参考信号。
第一接收单元 71可以用于通过高层信令或动态信令, 从基站接收参考 信号资源配置信息;或者基于小区标识,从基站接收参考信号资源配置信息。
其中, 天线端口配置指示的信息可以是天线端口总数 N, 其中 N是 n 的倍数; 此时, 天线端口配置指示的天线端口结构由参数 N/n和 n确定; 此 时, 天线端口参数 n可以是预定义的, 为 UE和基站所共知; 另外, 天线端 口参数 n也可以通过广播或者组播通知给 UE。 天线端口结构参数 n可以是 UE特定的, 也可以是小区特定的。
或者, 天线端口配置指示的信息是参数 m和参数 n。 此时, 天线端口配 置指示的天线端口结构由参数 m和 n确定; 例如, 此时, 天线端口结构为行 数是 m、 列数是 n的天线阵列。
其中, 所述参考信号子帧配置指示的信息可以包括子帧周期和子帧偏移 量, 其中所述子帧偏移量指示在所述子帧周期内发送所述参考信号的一个或 者多个子帧位置, 所述子帧位置可以在一个子帧周期内均勾分布或者等长分 布, 所述子帧位置也可以根据需要配置成在一个子帧周期内非均勾分布, 从 而避免与其它配置之间的干扰。 进一步地, 参考信号子帧之间的间隔为 5或 者 10或者 20或者 40或者 80个子帧的整数倍。
一般地,每个参考信号子帧在一个或多个天线端口组上发送所述参考信 号, 其中每个所述天线端口组包括 n个其索引连续的天线端口, n为天线端 口结构参数。
其中, n个其索引连续的天线端口可以与天线阵列结构或者天线端口结 构中的水平方向一行天线端口相对应, 已有 LTE R8-R11系统可以使用天线 阵列结构或者天线端口结构中的水平方向一行天线端口,即已有 LTE R8-R11 系统的天线端口或者参考信号可以是配置 AAS基站的 LTE R12以及未来系 统的子集。 已有 LTE R8-R11系统主要针对水平方向部署的天线阵列设计, 因此, 上述 n个其索引连续的天线端口可以与已有系统兼容, 保证已有系统 的 UE能够正常接入并通信。 每个参考信号子帧内参考信号占有的物理资源,如每个 PRB内的 RE可 以是预定义的, 为 UE和基站所公知。
此外, 参考信号资源配置信息还可以包括参考信号配置的信息, 其中所 述参考信号配置可以指示参考信号子帧周期内每个参考信号子帧发送所述 参考信号时每个天线端口所使用的物理资源, 如每个 PRB 内参考信号使用 的 RE, 此处不做限定。
所述参考信号子帧周期内每个所述参考信号子帧的参考信号配置可以 相同。 例如, 在参考信号子帧周期内的一个参考信号子帧内的所述 n个其索 引连续的天线端口与参考信号子帧周期内的另一个参考信号子帧内所述 n个 其索引连续的天线端口所使用的参考信号占有相同的物理资源单元 RE位 置。
需要说明的是, 参考信号配置所指示的每个参考信号子帧内不同的物理 资源块 PRB上的 RE相对于每个 PRB内的位置可以相同, 也可以不同。 每 个 PRB内参考信号配置对应的 RE位置可以采用现有 LTE-R10 CSI RS所使 用的 RE位置或者码资源, 此处不赘述。
由此可见, 本发明实施例基于参考信号资源配置信息可以获取天线端口 阵列结构, 并基于所述结构参数在其中所述参考信号子帧上接收一个或者多 个 n-端口的天线端口组上发送的参考信号,其中每个天线端口组包含的天线 端口索引连续,从而便于 UE实现信道状态信息测量或者信号接收质量测量。 所述方案使得参考信号的发送能够自适应天线阵列结构和更多的天线端口 数配置, 用于小区选择或者 MCS选择和调度, 进而提高系统的吞吐量。 同 时, 天线端口的索引连续能够满足系统的后向兼容性要求。
以下将结合图 8描述根据本发明实施例的发送参考信号的装置。 如图 8 所示,发送参考信号的装置 80包括第一发送单元 81和第二发送单元 82。第 一发送单元 81用于向 UE发送参考信号资源配置信息, 其中所述参考信号 资源配置信息包括天线端口配置和参考信号子帧配置的信息, 所述天线端口 配置指示天线端口结构,所述参考信号子帧配置指示在一个或多个天线端口 组上发送所述参考信号的参考信号子帧, 其中每个天线端口组包括 n个索引 连续的天线端口, n为天线端口结构参数。第二发送单元 82用于根据所述第 一发送单元 81发送的所述参考信号资源配置信息, 向所述 UE发送参考信 号。 需要指出的是, 每个天线端口与一个参考信号相关联或者相对应, 每个 天线端口由参考信号唯一识别。 参考信号子帧是指发送参考信号的子帧。
具体地, 第一发送单元 81用于通过高层信令或动态信令, 向 UE发送 参考信号资源配置信息; 或者基于小区标识, 向 UE发送参考信号资源配置 信息。
其中, 天线端口配置指示的信息可以是所述天线端口总数 N, 所述 N是 n的倍数; 此时, 天线端口配置指示的天线端口结构由参数 N/n和 n确定。 天线端口参数 n可以是预定义的, 为 UE和基站所共知; 另外, 天线端口参 数 n也可以通过广播或者组播通知给 UE。 天线端口结构参数 n可以是 UE 特定的, 也可以是小区特定的。
或者, 天线端口配置指示的信息是参数 m和参数 n, 此时, 天线端口配 置指示的天线端口结构由参数 m和 n确定;例如,天线端口结构为行数是 m、 列数是 n的天线阵列。
所述参考信号子帧配置指示的信息可以包括子帧周期和子帧偏移量, 其 中所述子帧偏移量指示在所述子帧周期内发送所述参考信号的一个或者多 个子帧位置, 所述子帧位置可以在一个子帧周期内均勾分布或者等长分布, 所述子帧位置也可以根据需要配置成在一个子帧周期内非均匀分布,从而避 免与其它配置之间的干扰。 进一步地, 所述参考信号子帧之间的间隔为 5或 者 10或者 20或者 40或者 80个子帧的整数倍。
所述每个参考信号子帧在一个或多个天线端口组上发送所述参考信号, 其中每个所述天线端口组包括 n个其索引连续的天线端口, n为天线端口结 构参数。
其中, n个其索引连续的天线端口可以与天线阵列结构或者天线端口结 构中的水平方向一行天线端口相对应, 已有 LTE R8-R11系统可以使用天线 阵列结构或者天线端口结构中的水平方向一行天线端口,即已有 LTE R8-R11 系统的天线端口或者参考信号可以是配置 AAS基站的 LTE R12以及未来系 统的子集。 已有 LTE R8-R11系统主要针对水平方向部署的天线阵列设计, 因此, 上述 n个其索引连续的天线端口可以与已有系统兼容, 保证已有系统 的 UE能够正常接入并通信。
每个参考信号子帧内参考信号占有的物理资源 (如每个 PRB中的 RE ) 的位置可以是预定义的, 为 UE和基站或者 eNB所公知。 此外, 参考信号资源配置信息还可以包括参考信号配置的信息, 其中所 述参考信号配置可以指示参考信号子帧周期内每个所述参考信号子帧发送 所述参考信号时每个天线端口所使用的物理资源, 如每个 PRB 内参考信号 使用的 RE, 此处不做限定。
所述参考信号子帧周期内每个所述参考信号子帧的参考信号配置可以 相同。 例如, 在参考信号子帧周期内的一个参考信号子帧内的所述 n个其索 引连续的天线端口与参考信号子帧周期内的另一个参考信号子帧内所述 n个 其索引连续的天线端口所使用的参考信号占有相同的物理资源单元 RE位 置。
需要说明的是, 参考信号配置所指示的每个参考信号子帧内不同的物理 资源块 PRB上的 RE相对于每个 PRB内的位置可以相同, 也可以不同。 每 个 PRB内参考信号配置对应的 RE位置可以采用现有 LTE-R10 CSI RS所使 用的 RE位置或者码资源, 此处不赘述。
此外,需要进一步指出的是,在向 UE发送参考信号资源配置信息之前, 还可以包括基站根据 UE的能力为 UE确定参考信号资源配置,例如某些 UE 只能处理 8个天线端口的能力。 此外, 基站还可以根据服务小区内 UE的数 目考虑不同的 UE使用不同的天线端口组或者天线端口子集。
由此可见, 本发明实施例基于参考信号资源配置信息传输参考信号, 可 以通知天线端口阵列结构, 并基于所述结构参数在其中所述参考信号子帧上 在一个或者多个 n-端口的天线端口组上发送参考信号,其中每个天线端口组 包含的天线端口索引连续, 从而便于 UE实现进行信道状态信息测量或者信 号接收质量测量。所述方案使得参考信号的发送能够自适应天线阵列结构和 更多的天线端口数配置, 用于小区选择或者 MCS选择和调度, 进而提高系 统的吞吐量。 同时, 天线端口的索引连续能够满足系统的后向兼容性要求。
图 9示出了根据本发明实施例的用户设备 90, 包括收发器 91和处理器
92,收发器 91用于在处理器 92的控制下从基站接收参考信号资源配置信息, 其中所述参考信号资源配置信息包括天线端口配置和参考信号子帧配置的 信息, 所述天线端口配置指示天线端口结构, 所述参考信号子帧配置指示在 一个或多个天线端口组上发送所述参考信号的参考信号子帧, 其中每个所述 天线端口组包括 n个索引连续的天线端口, n为天线端口结构参数; 还用于 依据由接收的所述参考信号资源配置信息, 从所述基站接收参考信号。 由此可见, 本发明实施例基于参考信号资源配置信息, 可以获取天线端 口阵列结构, 并基于所述结构参数在其中所述参考信号子帧上接收一个或者 多个 n-端口的天线端口组上发送的参考信号,其中每个天线端口组包含的天 线端口索引连续, 从而便于 UE实现信道状态信息测量或者信号接收质量测 量。所述方案使得参考信号的发送能够自适应天线阵列结构和更多的天线端 口数配置, 用于小区选择或者 MCS选择和调度, 进而提高系统的吞吐量, 同时满足系统的后向兼容性要求。
图 10示出了根据本发明实施例的基站 100, 包括处理器 101和发送器 102。 处理器 101用于确定参考信号资源配置信息, 其中所述参考信号资源 配置信息包括天线端口配置和参考信号子帧配置的信息, 所述天线端口配置 指示天线端口结构, 所述参考信号子帧配置指示在一个或多个天线端口组上 发送所述参考信号的参考信号子帧, 其中每个所述天线端口组包括 n个索引 连续的天线端口, n为天线端口结构参数。 发送器 102用于向 UE发送参考 信号资源配置信息和参考信号。
由此可见, 本发明实施例基于参考信号资源配置信息传输参考信号可以 指示天线端口阵列结构, 并基于所述结构参数在其中所述参考信号子帧上在 一个或者多个 n-端口的天线端口组上发送参考信号,其中每个天线端口组包 含的天线端口索引连续, 从而便于 UE实现信道状态信息测量或者信号接收 质量测量。所述方案使得参考信号的发送能够自适应天线阵列结构和更多的 天线端口数配置, 用于小区选择或者 MCS选择和调度, 进而提高系统的吞 吐量, 同时满足系统的后向兼容性要求。
应理解, 本发明的每个权利要求所叙述的方案也应看做是一个实施例, 并且是权利要求中的特征是可以结合的,如本发明中的判断步骤后的执行的 不同分支的步骤可以作为不同的实施例。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 或者计算机软件和电子硬件的结 合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方案的特 定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能, 但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为描述的方便和筒洁, 上述描 述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一 个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使 用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明 的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部 分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。 而前 述的存储介质包括: U盘、移动硬盘、只读存储器( ROM , Read-Only Memory )、 随机存取存储器(RAM, Random Access Memory ), 磁碟或者光盘等各种可 以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应所述以权利要求的保护范围为准。

Claims

权利要求
1、 一种接收参考信号的方法, 其特征在于, 包括:
接收参考信号资源配置信息, 其中所述参考信号资源配置信息包括天线 端口配置和参考信号子帧配置的信息, 所述天线端口配置指示天线端口结 构, 所述参考信号子帧配置指示在一个或多个天线端口组上发送参考信号的 参考信号子帧, 每个所述天线端口组包括 n个索引连续的天线端口, n为天 线端口结构参数;
依据所述参考信号资源配置信息, 接收所述参考信号。
2、 根据权利要求 1所述的方法, 其特征在于, 所述天线端口配置指示 的信息为所述天线端口总数 N, 所述 N是 n的倍数, n为预定义的正整数。
3、 根据权利要求 1所述的方法, 其特征在于,
所述天线端口配置指示的信息为所述天线端口结构参数 m和 n; 或者 所述天线端口配置指示的信息为所述天线端口结构参数 m和 n的联合编 码。
4、 根据权利要求 1至 3中任一项所述的方法, 其特征在于, 所述参考 信号子帧配置指示的信息包括子帧周期和子帧偏移量, 其中所述子帧偏移量 指示在所述子帧周期内发送所述参考信号的一个或者多个子帧位置。
5、 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 所述参考 信号子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍。
6、 根据权利要求 1至 5中任一项所述的方法, 其特征在于, 所述参考 信号资源配置信息还包括参考信号配置的信息, 所述参考信号配置指示参考 信号子帧周期内每个所述参考信号子帧上发送所述参考信号时每个所述天 线端口所使用的物理资源。
7、 根据权利要求 6所述的方法, 其特征在于, 所述参考信号配置指示 在所述参考信号子帧周期内不同参考信号子帧上发送所述参考信号的索引 连续的天线端口所使用的不同资源单元。
8、 一种发送参考信号的方法, 其特征在于, 包括:
向用户设备发送参考信号资源配置信息, 其中所述参考信号资源配置信 息包括天线端口配置和参考信号子帧配置的信息, 所述天线端口配置指示天 线端口结构, 所述参考信号子帧配置指示在一个或多个天线端口组上发送参 考信号的参考信号子帧,每个所述天线端口组包括 n个索引连续的天线端口, n为天线端口结构参数;
根据所述参考信号资源配置信息, 向所述用户设备发送所述参考信号。
9、 根据权利要求 8所述的方法, 其特征在于, 所述天线端口配置指示 的信息为所述天线端口总数 N, 所述 N是 n的倍数, n为预定义的正整数。
10、 根据权利要求 8所述的方法, 其特征在于,
所述天线端口配置指示的信息为所述天线端口结构参数 m和 n; 或者 所述天线端口配置指示的信息为所述天线端口结构参数 m和 n的联合编 码。
11、 根据权利要求 8至 10中任一项所述的方法, 其特征在于, 所述参 考信号子帧配置指示的信息包括子帧周期和子帧偏移量,其中所述子帧偏移 量指示在所述子帧周期内所述参考信号使用的一个或者多个子帧位置。
12、 根据权利要求 8至 11 中任一项所述的方法, 其特征在于, 所述参 考信号子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍。
13、 根据权利要求 8至 12中任一项所述的方法, 其特征在于, 所述参 考信号资源配置信息还包括参考信号配置的信息,所述参考信号配置指示参 考信号子帧周期内每个所述参考信号子帧上发送所述参考信号时每个所述 天线端口所使用的物理资源。
14、 根据权利要求 13所述的方法, 其特征在于, 所述参考信号配置指 示在所述参考信号子帧周期内不同参考信号子帧上发送所述参考信号的索 引连续的天线端口所使用的不同资源单元。
15、 一种接收参考信号的装置, 其特征在于, 包括:
第一接收单元, 用于接收参考信号资源配置信息, 其中所述参考信号资 源配置信息包括天线端口配置和参考信号子帧配置的信息, 所述天线端口配 置指示天线端口结构,所述参考信号子帧配置指示在一个或多个天线端口组 上发送参考信号的参考信号子帧,每个所述天线端口组包括 n个索引连续的 天线端口, n为天线端口结构参数;
第二接收单元, 用于依据由所述第一接收单元接收的所述参考信号资源 配置信息, 接收基站发送的所述参考信号。
16、 根据权利要求 15所述的装置, 其特征在于, 所述天线端口配置指 示的信息为所述天线端口总数 N,所述 N是 n的倍数, n为预定义的正整数。
17、 根据权利要求 15所述的装置, 其特征在于,
所述天线端口配置指示的信息为所述天线端口结构参数 m和 n; 或者 所述天线端口配置指示的信息为所述天线端口结构参数 m和 n的联合编 码。
18、 根据权利要求 15至 17中任一项所述的装置, 其特征在于, 所述参 考信号子帧配置指示的信息包括子帧周期和子帧偏移量, 其中所述子帧偏移 量指示在所述子帧周期内所述参考信号使用的一个或者多个子帧位置。
19、 根据权利要求 15至 18中任一项所述的装置, 其特征在于, 所述参 考信号子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍。
20、 根据权利要求 15至 19中任一项所述的装置, 其特征在于, 所述参 考信号资源配置信息还包括参考信号配置的信息, 所述参考信号配置指示参 考信号子帧周期内每个所述参考信号子帧上发送所述参考信号时每个所述 天线端口所使用的物理资源。
21、 根据权利要求 20 中任一项所述的装置, 其特征在于, 所述参考信 号配置指示在所述参考信号子帧周期内不同参考信号子帧上发送所述参考 信号的索引连续的天线端口所使用的不同资源单元。
22、 一种发送参考信号的装置, 其特征在于, 包括:
第一发送单元, 用于向用户设备发送参考信号资源配置信息, 其中所述 参考信号资源配置信息包括天线端口配置和参考信号子帧配置的信息, 所述 天线端口配置指示天线端口结构, 所述参考信号子帧配置指示在一个或多个 天线端口组上发送参考信号的参考信号子帧,每个所述天线端口组包括 n个 索引连续的天线端口, n为天线端口结构参数;
第二发送单元, 用于根据所述第一发送单元发送的所述参考信号资源配 置信息, 向所述用户设备发送所述参考信号。
23、 根据权利要求 22所述的装置, 其特征在于, 所述天线端口配置指 示的信息为所述天线端口总数 N,所述 N是 n的倍数, n为预定义的正整数。
24、 根据权利要求 22所述的装置, 其特征在于,
所述天线端口配置指示的信息为所述天线端口结构参数 m和 n; 或者 所述天线端口配置指示的信息为所述天线端口结构参数 m和 n的联合编 码。
25、 根据权利要求 22至 24中任一项所述的装置, 其特征在于, 所述参 考信号子帧配置指示的信息包括子帧周期和子帧偏移量, 其中所述子帧偏移 量指示在所述子帧周期内所述参考信号使用的一个或者多个子帧位置。
26、 根据权利要求 22至 25中任一项所述的装置, 其特征在于, 所述参 考信号子帧之间的间隔为 5或者 10或者 20或者 40或者 80个子帧的整数倍。
27、 根据权利要求 22至 26中任一项所述的装置, 其特征在于, 所述参 考信号资源配置信息还包括参考信号配置的信息, 所述参考信号配置指示参 考信号子帧周期内每个所述参考信号子帧上发送所述参考信号时每个所述 天线端口所使用的物理资源。
28、 根据权利要求 27所述的装置, 其特征在于, 所述参考信号配置指 示在所述参考信号子帧周期内不同参考信号子帧上发送所述参考信号的索 引连续的天线端口所使用的不同资源单元。
29、 一种用户设备, 其特征在于, 包括:
处理器和接收器,
其中所述处理器控制所述收发器接收参考信号资源配置信息, 其中所述 参考信号资源配置信息包括天线端口配置和参考信号子帧配置的信息, 所述 天线端口配置指示天线端口结构, 所述参考信号子帧配置指示在一个或多个 天线端口组上发送参考信号的参考信号子帧,每个所述天线端口组包括 n个 索引连续的天线端口, n为天线端口结构参数;
所述收发器, 还用于依据接收到的所述参考信号资源配置信息, 接收所 述基站发送的所述参考信号。
30、 一种基站, 其特征在于, 包括:
处理器, 确定参考信号资源配置信息, 其中所述参考信号资源配置信息 包括天线端口配置和参考信号子帧配置的信息, 所述天线端口配置指示天线 端口结构, 所述参考信号子帧配置指示在一个或多个天线端口组上发送参考 信号的参考信号子帧, 每个所述天线端口组包括 n个索引连续的天线端口, n为天线端口结构参数;
发送器, 用于向用户设备发送所述参考信号资源配置信息和所述参考信 号。
PCT/CN2013/073727 2013-04-03 2013-04-03 接收和发送参考信号的方法及装置、用户设备和基站 Ceased WO2014161183A1 (zh)

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