WO2018028309A1 - 传输方案指示方法、数据传输方法、装置及系统 - Google Patents

传输方案指示方法、数据传输方法、装置及系统 Download PDF

Info

Publication number
WO2018028309A1
WO2018028309A1 PCT/CN2017/089022 CN2017089022W WO2018028309A1 WO 2018028309 A1 WO2018028309 A1 WO 2018028309A1 CN 2017089022 W CN2017089022 W CN 2017089022W WO 2018028309 A1 WO2018028309 A1 WO 2018028309A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
transmission scheme
initial spatial
transmit diversity
streams
Prior art date
Application number
PCT/CN2017/089022
Other languages
English (en)
French (fr)
Inventor
吴晔
刘永
毕晓艳
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP17838440.0A priority Critical patent/EP3480992A4/en
Publication of WO2018028309A1 publication Critical patent/WO2018028309A1/zh
Priority to US16/271,367 priority patent/US10735080B2/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a transmission scheme indication method, a data transmission method, apparatus, and system.
  • the base station may indicate that the UE uses the corresponding TM for data transmission by using Radio Resource Control (RRC) signaling, and each of the multiple TMs includes two transmission schemes, the base station
  • RRC Radio Resource Control
  • the transmission scheme indication information may be sent to the user equipment (English: User equipment; abbreviated as: UE) according to the channel quality, where the transmission scheme indication information may indicate one of the TMs currently adopted by the UE, and the UE may indicate according to the transmission scheme.
  • the information is transmitted using the corresponding transmission scheme.
  • the channel quality can be characterized by channel state information (CSI).
  • each of TM3 to TM10 includes a non-transmission diversity multiple-input and multiple-output (MIMO) transmission scheme and a non-beamforming transmit diversity (English: Non-beamforming) Transmission diversity; abbreviated as: NBTD) transmission schemes
  • TM5 includes a multi-user MIMO transmission scheme and a transmission diversity transmission scheme transmission scheme, wherein the non-transmission diversity MIMO transmission scheme can enable different UEs to perform time-frequency resources.
  • Space-division multiplexing can also enable the same UE to simultaneously transmit multiple spatial streams (or symbol layer and spatial layer) to improve spectrum efficiency. It is suitable for scenarios with better channel quality.
  • the NBTD transmission scheme can effectively combat channel fading and improve.
  • the signal-to-noise ratio at the receiving end ensures the reliability of the data transmitted by the UE, and is suitable for scenarios with poor channel quality.
  • the UE may report the CSI to the base station, and the base station instructs the UE to use the corresponding transmission scheme for data transmission according to the CSI reported by the UE through downlink control information (English: Downlink control information; DCI for short).
  • downlink control information English: Downlink control information; DCI for short.
  • the TM in the related art includes a non-transmission diversity MIMO transmission scheme and an NBTD transmission scheme, and the UE can only use the non-transmission diversity MIMO transmission scheme or the NBTD transmission scheme for data transmission according to the indication of the base station, and therefore, the flexibility of the UE to transmit data is more flexible. low.
  • the embodiment of the present invention provides a transmission scheme indication method, a data transmission method, an apparatus, and a system.
  • the technical solution is as follows:
  • a transmission scheme indication method comprising:
  • the transmission scheme indication information is used to indicate one of at least two transmission schemes included in the current transmission mode, where the at least two transmission schemes include a beamforming transmit diversity transmission scheme;
  • the embodiment of the present invention is used in a system consisting of a base station and a UE.
  • the UE may have multiple transmission modes, and each transmission mode may include at least two transmission schemes, and the UE may adopt any one of the transmission modes.
  • the current transmission mode refers to a transmission mode adopted by the UE for data transmission, the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme.
  • the base station may generate transmission scheme indication information and send transmission scheme indication information to the UE, where the transmission scheme indication information is used to indicate one of the at least two transmission schemes included in the current transmission mode.
  • the transmission scheme indication information is used for Indicates a beamforming transmit diversity transmission scheme in the current transmission mode.
  • the UE may report the CSI to the base station, and the base station may generate the transmission scheme indication information according to the CSI reported by the UE.
  • the base station may determine the channel quality according to the CSI reported by the UE, and then generate the transmission scheme indication information according to the channel quality.
  • the UE may report the CSI to the base station when the CSI changes, and may also report the CSI to the base station periodically, or may report the CSI to the base station at a preset time interval.
  • the specific implementation manner of the CSI reported by the UE to the base station may refer to the LTE, The embodiments of the invention are not described herein again.
  • the at least two transmission schemes further comprise an open-loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the beamforming transmit diversity transmission scheme and the open loop transmit diversity transmission scheme may be two independent transmission schemes, or may be a unified transmission scheme, and the unified transmission scheme may be unified transmit diversity (English: Unified transmit diversity;
  • the UTM transmission scheme includes two sub-schemes: a beamforming transmit diversity transmission scheme and an open loop transmit diversity transmission scheme, which are not limited in this embodiment of the present invention.
  • generating the transmission scheme indication information including: generating downlink control information, where the format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information of the at least two transmission schemes included in the current transmission mode;
  • Transmitting the transmission scheme indication information includes: transmitting the downlink control information.
  • the transmission scheme indication information may be a format of the downlink control information that is sent by the base station to the UE, and each of the at least two transmission schemes in the current transmission mode may correspond to a format of the downlink control information. Therefore, the base station generates the transmission scheme indication information, which may specifically generate the downlink control information for the base station.
  • the downlink control information may be the DCI in the LTE.
  • the base station may generate downlink control information in the format 1A, which may indicate a beamforming transmit diversity transmission scheme in the current transmission mode.
  • the base station may send the downlink control information to the UE.
  • the transmission scheme indication information may be in the format of the downlink control information. Therefore, the base station may send the transmission scheme indication information to the UE, where the base station may send the downlink control information to the UE, where the downlink control information may be the DCI in the LTE, and the base station may pass the physical downlink.
  • the first time-frequency resource in the control channel (English: Physical downlink control channel; PDCCH for short) transmits downlink control information to the UE, and the first time-frequency resource may be a time-frequency resource in the UE search space, and is searched in the space through the UE.
  • the downlink control information sent by the time-frequency resource to the UE is usually scrambled by using the radio network temporary identifier (English: Radio Network Temporary Identity; RNTI).
  • RNTI Radio Network Temporary Identity
  • the base station sends the downlink control information in the format 1A to the UE by using the first time-frequency resource, where the downlink control information in the format 1A is scrambled by the RNTI of the UE.
  • a data transmission method comprising:
  • the transmission scheme indication information is used to indicate one of at least two transmission schemes included in a current transmission mode, where the at least two transmission schemes comprise a beamforming transmit diversity transmission scheme;
  • Data transmission is performed according to the transmission scheme indicated by the transmission scheme indication information.
  • the UE may receive the transmission scheme indication information sent by the base station, and then perform data transmission according to the transmission scheme indicated by the transmission scheme indication information.
  • the transmission scheme indicated by the transmission scheme indication information may be a beamforming transmit diversity transmission scheme in the current transmission mode, and therefore, the UE may perform data transmission according to the beamforming transmit diversity transmission scheme.
  • the at least two transmission schemes further comprise an open-loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the beamforming transmit diversity transmission scheme and the open loop transmit diversity transmission scheme may be two independent transmission schemes, or may be a unified transmission scheme, where the unified transmission scheme may be a UTD transmission scheme, where the UTD transmission scheme includes
  • the two sub-schemes of the beamforming and transmitting diversity transmission scheme and the open-loop transmit diversity transmission scheme are not limited in this embodiment of the present invention.
  • receiving the transmission scheme indication information including: receiving downlink control information, where the format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information of the at least two transmission schemes included in the current transmission mode;
  • the method further includes:
  • the transmission scheme corresponding to the format of the downlink control information is determined as the transmission scheme indicated by the transmission scheme indication information.
  • the transmission scheme indication information may be in the format of the downlink control information. Therefore, the UE may receive the downlink control information sent by the base station, where the downlink control information may be the DCI in the LTE. For example, the UE receives the downlink control information in the format 1A sent by the base station.
  • the UE may perform blind detection on the UE search space in the PDCCH according to the RNTI of the UE to implement the reception of the indication information of the transmission scheme. Specifically, the UE sequentially attempts to use multiple downlink control information in the format of the UE according to its own RNTI. The search space is parsed and then verified. If the check is successful, the blind detection succeeds, and the UE can determine the format of the downlink control information.
  • the UE determines the downlink control information and downlink control information related to itself by means of blind detection.
  • the specific implementation process of the format is clearly described in the related art. Therefore, the specific implementation process may refer to related technologies, and details are not described herein again.
  • the UE After receiving the downlink control information sent by the base station, the UE may perform data transmission according to the transmission scheme indicated by the transmission scheme indication information sent by the base station.
  • the transmission scheme indication information may be the format of the downlink control information, and the UE The downlink control information is received by using a blind detection manner. Therefore, after receiving the downlink control information, the UE may obtain the format of the downlink control information, and then determine the at least two transmission schemes included in the current transmission mode. a transmission scheme corresponding to the format of the downlink control information, the transmission scheme corresponding to the format of the downlink control information is determined as a transmission scheme indicated by the transmission scheme indication information, and then the UE may according to the transmission scheme indicated by the transmission scheme indication information Data transfer.
  • the UE may obtain To the format of the downlink control information, the format of the downlink control information is format 1A, and then the UE determines a transmission scheme corresponding to the format 1A in the at least two transmission schemes included in the current transmission mode, and the transmission scheme corresponding to the format 1A
  • the beamforming transmit diversity transmission scheme may be performed. Therefore, the UE determines the beamforming transmit diversity transmission scheme as the transmission scheme indicated by the transmission scheme indication information, and performs data transmission according to the beamforming transmit diversity transmission scheme.
  • a base station comprising:
  • a generating module configured to generate transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in the current transmission mode, where the at least two transmission schemes include beamforming transmit diversity transmission Program;
  • a sending module configured to send the transmission scheme indication information.
  • the at least two transmission schemes further comprise an open-loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the generating module is configured to generate downlink control information, where the format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information among the at least two transmission schemes included in the current transmission mode;
  • a sending module configured to send the downlink control information.
  • a fourth aspect provides a user equipment UE, where the UE includes:
  • a receiving module configured to receive transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in a current transmission mode, where the at least two transmission schemes include beamforming transmit diversity transmission Program;
  • a transmission module configured to perform data transmission according to the transmission scheme indicated by the transmission scheme indication information.
  • the at least two transmission schemes further comprise an open-loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the receiving module is configured to receive downlink control information, where the format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information of the at least two transmission schemes included in the current transmission mode;
  • the UE further includes: a first determining module, configured to determine, in the at least two transmission schemes included in the current transmission mode, a transmission scheme corresponding to a format of the downlink control information;
  • a second determining module configured to determine, by the transmission scheme corresponding to the format of the downlink control information, a transmission scheme indicated by the transmission scheme indication information.
  • a base station in a fifth aspect, includes: a processor and a transmitter, the processor being coupled to the transmitter,
  • a processor configured to generate transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in a current transmission mode, where the at least two transmission schemes include beamforming transmit diversity transmission Program;
  • a transmitter configured to send the transmission scheme indication information.
  • the at least two transmission schemes further comprise an open-loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the processor is configured to generate downlink control information, where the format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information among the at least two transmission schemes included in the current transmission mode;
  • a transmitter configured to send the downlink control information.
  • a user equipment UE includes: a receiver and a processor, the receiver being coupled to the processor,
  • a receiver configured to receive transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in a current transmission mode, where the at least two transmission schemes include beamforming transmit diversity transmission Program;
  • a processor configured to perform data transmission according to the transmission scheme indicated by the transmission scheme indication information.
  • the at least two transmission schemes further comprise an open-loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the receiver is configured to receive downlink control information, where the format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information of the at least two transmission schemes included in the current transmission mode;
  • the processor is further configured to: determine, according to at least two transmission schemes included in the current transmission mode, a transmission scheme corresponding to a format of the downlink control information; and determine, as the transmission scheme indication information, a transmission scheme corresponding to a format of the downlink control information The indicated transmission scheme.
  • a data transmission system includes: a base station and a user equipment UE;
  • the base station is the base station according to the third aspect or the fifth aspect; the UE is the UE of the fourth aspect or the sixth aspect.
  • a data sending method comprising:
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the method further includes:
  • Precoding the demodulation reference signals of the plurality of initial spatial streams to obtain a plurality of precoding demodulation reference signals, each of the plurality of initial spatial streams corresponding to one demodulation reference signal, and each initial spatial stream is used
  • the precoding vector is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • a data receiving method comprising:
  • a raw spatial stream is recovered from at least two initial spatial streams.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the method further includes: receiving, by the plurality of precoding demodulation reference signals, precoding the demodulation reference signals of the plurality of initial spatial streams, the multiple initial spatial streams.
  • Each of the initial spatial streams corresponds to a demodulation reference signal, and each of the initial spatial streams uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • Recovering at least two initial spatial streams from the plurality of precoded data streams includes recovering at least two initial spatial streams from the plurality of precoded data streams based on the precoded demodulation reference signals of the at least two initial spatial streams.
  • a tenth aspect provides a data sending method, the method comprising:
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the method further includes:
  • the precoding vector used by the stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • a data receiving method comprising:
  • Receiving a plurality of precoded data streams obtained by precoding at least two initial spatial streams, and at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream;
  • a raw spatial stream is recovered from at least two initial spatial streams.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the method further includes: receiving a plurality of precoding demodulation reference signals, wherein the plurality of precoding demodulation reference signals are precoded by demodulating reference signals of the at least two initial spatial streams, at least two initial Each initial spatial stream in the spatial stream corresponds to a demodulation reference signal, and each preamble stream uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • Recovering at least two initial spatial streams from the plurality of precoded data streams includes recovering at least two initial spatial streams from the plurality of precoded data streams based on the precoded demodulation reference signals of the at least two initial spatial streams.
  • a transmitter device where the device includes:
  • a first precoding module configured to precode a plurality of initial spatial streams to obtain a plurality of precoded data streams, and at least two initial spatial streams of the plurality of initial spatial streams are subjected to transmit diversity processing on a raw spatial stream.
  • a transmitting module for transmitting a plurality of precoded data streams.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the transmitting device further includes:
  • a second precoding module configured to precode the demodulation reference signals of the plurality of initial spatial streams to obtain a plurality of precoding demodulation reference signals, where each initial spatial stream in the plurality of initial spatial streams corresponds to a demodulation reference a signal, the precoding vector used by each initial spatial stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • a sending module configured to send multiple precoding demodulation reference signals.
  • a thirteenth aspect provides a receiving end device, where the receiving end device includes:
  • a first receiving module configured to receive a plurality of pre-encoded data streams, where the plurality of pre-encoded data streams are pre-coded by the plurality of initial spatial streams, and at least two initial spatial streams of the plurality of initial spatial streams are passed through An original spatial stream is obtained by performing transmit diversity processing;
  • a first recovery module configured to recover at least two initial spatial streams from the plurality of precoded data streams
  • the second recovery module is configured to recover an original spatial stream according to the at least two initial spatial streams.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the receiving device further includes:
  • a second receiving module configured to receive a plurality of precoding demodulation reference signals, where the plurality of precoding demodulation reference signals are precoded by demodulating reference signals of multiple initial spatial streams, in multiple initial spatial streams
  • Each initial spatial stream corresponds to one demodulation reference signal, and each preamble stream uses a precoding vector that is the same as a precoding vector used by the demodulation reference signal of each initial spatial stream;
  • a first recovery module configured to recover at least two initial spatial streams from the plurality of precoded data streams according to the precoded demodulation reference signals of the at least two initial spatial streams.
  • a transmitting device includes:
  • a first precoding module configured to precode at least two initial spatial streams to obtain a plurality of precoded data streams, where at least two initial spatial streams are obtained by performing transmit diversity processing on an original spatial stream;
  • a transmitting module for transmitting a plurality of precoded data streams.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the transmitting device further includes:
  • a second precoding module configured to precode the demodulation reference signals of the at least two initial spatial streams to obtain a plurality of precoding demodulation reference signals, where each initial spatial stream in the at least two initial spatial streams corresponds to a solution
  • each preamble stream uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • a sending module configured to send multiple precoding demodulation reference signals.
  • a receiving end device includes:
  • a first receiving module configured to receive a plurality of precoded data streams, where the plurality of precoded data streams are precoded by at least two initial spatial streams, and at least two initial spatial streams are transmitted by using an original spatial stream Obtained by diversity processing;
  • a first recovery module configured to recover at least two initial spatial streams from the plurality of precoded data streams
  • the second recovery module is configured to recover an original spatial stream according to the at least two initial spatial streams.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the receiving device further includes:
  • a second receiving module configured to receive multiple precoding demodulation reference signals, where the plurality of precoding demodulation reference signals are precoded by demodulating reference signals of at least two initial spatial streams, at least two initial spatial streams
  • Each initial spatial stream in the picture corresponds to a demodulation reference signal, and the precoding vector used by each initial spatial stream and the solution of each initial spatial stream
  • the precoding vector used by the reference signal is the same;
  • a first recovery module configured to recover at least two initial spatial streams from the plurality of precoded data streams according to the precoded demodulation reference signals of the at least two initial spatial streams.
  • a transmitter device in a sixteenth aspect, includes: a processor and a transmitter, and the processor is coupled to the transmitter,
  • a processor configured to pre-code a plurality of initial spatial streams to obtain a plurality of pre-coded data streams, where at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream;
  • a transmitter for transmitting a plurality of precoded data streams.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the processor is further configured to perform precoding on the demodulation reference signals of the multiple initial spatial streams to obtain multiple precoding demodulation reference signals, and each initial spatial stream in the multiple initial spatial streams corresponds to a solution.
  • each preamble stream uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the transmitter is also configured to transmit a plurality of precoded demodulation reference signals.
  • a receiving end device comprising: a receiver and a processor, the receiver being coupled to the processor,
  • a receiver configured to receive a plurality of precoded data streams, wherein the plurality of precoded data streams are precoded by the plurality of initial spatial streams, and at least two of the plurality of initial spatial streams are passed through a pair of original spatial streams
  • the spatial stream is obtained by transmitting diversity processing
  • a processor configured to recover at least two initial spatial streams from the plurality of precoded data streams
  • a processor configured to recover an original spatial stream according to the at least two initial spatial streams.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the receiver is further configured to receive multiple precoding demodulation reference signals, where the plurality of precoding demodulation reference signals are precoded by using demodulation reference signals of multiple initial spatial streams, and multiple initial spaces.
  • Each initial spatial stream in the stream corresponds to a demodulation reference signal, and each preamble stream uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the processor is further configured to recover at least two initial spatial streams from the plurality of precoded data streams according to the precoded demodulation reference signals of the at least two initial spatial streams.
  • a transmitter device in an eighteenth aspect, includes: a processor and a transmitter, and the processor is coupled to the transmitter,
  • a processor configured to precode at least two initial spatial streams to obtain a plurality of precoded data streams, where at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream;
  • a transmitter for transmitting a plurality of precoded data streams.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the processor is configured to perform precoding on the demodulation reference signals of the at least two initial spatial streams to obtain a plurality of precoding demodulation reference signals, where each initial spatial stream of the at least two initial spatial streams corresponds to a demodulation reference signal, the precoding vector used by each initial spatial stream being the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • a transmitter for transmitting a plurality of precoded demodulation reference signals.
  • a receiving end device comprising: a receiver and a processor, the receiver being coupled to the processor,
  • a receiver configured to receive a plurality of precoded data streams, wherein the plurality of precoded data streams are precoded by at least two initial spatial streams, and at least two initial spatial streams are subjected to transmit diversity processing on an original spatial stream.
  • a processor configured to recover at least two initial spatial streams from the plurality of precoded data streams
  • a processor configured to recover an original spatial stream according to the at least two initial spatial streams.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the receiver is further configured to receive a plurality of precoding demodulation reference signals, where the plurality of precoding demodulation reference signals are precoded by demodulating reference signals of the at least two initial spatial streams, at least two Each initial spatial stream in the initial spatial stream corresponds to a demodulation reference signal, and each pre-spatial stream uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the processor is further configured to recover at least two initial spatial streams from the plurality of precoded data streams according to the precoded demodulation reference signals of the at least two initial spatial streams.
  • the base station generates the transmission scheme indication information and sends the transmission scheme indication information to the UE, where the transmission scheme indication information is used to indicate at least two included in the current transmission mode.
  • One of the transmission schemes, at least two transmission schemes include a beamforming transmit diversity transmission scheme, and the UE performs data transmission according to the transmission scheme indicated by the transmission scheme indication information. Due to current transmission mode
  • the method includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme. Therefore, the UE may use a beamforming transmit diversity transmission scheme to perform data transmission according to the indication of the base station, and solve the related art UE transmitting data.
  • the problem of lower flexibility has the effect of increasing the flexibility of the UE to transmit data.
  • FIG. 1 is a schematic diagram of an implementation environment involved in various embodiments of the present application.
  • FIG. 2 is a flowchart of a method for indicating a transmission scheme according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for data transmission according to an embodiment of the present invention.
  • 4-1 is a flowchart of a method for another data transmission method according to an embodiment of the present invention.
  • 4-2 is a schematic diagram of data transmission performed by a UE according to two transmission schemes in the same transmission mode according to the related art
  • 4-3 is a schematic diagram of data transmission performed by a UE according to at least two transmission schemes in a current transmission mode according to an embodiment of the present invention
  • 4-4 is a schematic diagram of another UE performing data transmission according to at least two transmission schemes in a current transmission mode according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for sending data according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a method for receiving data according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a method for another data transmission method according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of another method for sending data according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of a method for receiving another data according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of a method for further data transmission according to an embodiment of the present invention.
  • FIG. 11 is a block diagram of a base station according to an embodiment of the present invention.
  • FIG. 12-1 is a block diagram of a UE according to an embodiment of the present invention.
  • 12-2 is a block diagram of another UE according to an embodiment of the present invention.
  • FIG. 13 is a block diagram of another base station according to an embodiment of the present invention.
  • FIG. 14 is a block diagram of another UE according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.
  • 16-1 is a block diagram of a transmitting end device according to an embodiment of the present invention.
  • 16 is a block diagram of another transmitting device according to an embodiment of the present invention.
  • FIG. 17-1 is a block diagram of a receiving end device according to an embodiment of the present invention.
  • 17-2 is a block diagram of another receiving end device according to an embodiment of the present invention.
  • FIG. 18-1 is a block diagram of a transmitting end device according to an embodiment of the present invention.
  • 18-2 is a block diagram of another transmitting device according to an embodiment of the present invention.
  • FIG. 19-1 is a block diagram of a receiving end device according to an embodiment of the present invention.
  • 19-2 is a block diagram of another receiving device according to an embodiment of the present invention.
  • FIG. 20 is a block diagram of a transmitting end device according to an embodiment of the present invention.
  • FIG. 21 is a block diagram of a receiving end device according to an embodiment of the present invention.
  • FIG. 22 is a block diagram of a transmitting end device according to an embodiment of the present invention.
  • FIG. 23 is a block diagram of a receiving end device according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of an implementation environment according to various embodiments of the present application.
  • the implementation environment provides a wireless communication system, which may be a MIMO system.
  • the implementation environment may include: 01 and multiple UEs.
  • the implementation environment is described by taking multiple UEs including UE-02, UE-03, and UE-04 as an example.
  • Each of the multiple UEs has multiple TMs (such as TM1 to TM10), and each TM may include at least two transmission schemes, and each UE may use any one of the TM transmission schemes for data transmission.
  • the UE-02 is taken as an example for description.
  • the implementation process of other UEs may refer to UE-02, specifically:
  • UE-02 may have multiple TMs (such as TM1 to TM10), each TM may include at least two transmission schemes, and UE-02 may use any one of the TM transmission schemes for data transmission.
  • TMs such as TM1 to TM10
  • the UE-02 may report the CSI to the base station 01, and the base station 01 may generate the transmission scheme indication information according to the CSI reported by the UE-02, and then send the transmission scheme indication information to the UE-02, where the transmission scheme indication information may indicate the current transmission mode of the UE-02.
  • the UE-02 may perform data transmission according to the transmission scheme indication information sent by the base station 01 by using the transmission scheme indicated by the transmission scheme indication information in the current transmission mode.
  • the transmission scheme indication information may be carried in the downlink control information, which may be specifically indicated by the format of the downlink control information, where the format of the downlink control information may be compared with at least two transmission schemes included in the current transmission mode.
  • the transmission scheme indicates that the transmission scheme indicated by the information corresponds to the transmission scheme. Therefore, the base station 01 can generate downlink control information, and then send downlink control information to the UE-02, and the UE-02 can determine the at least two transmission schemes included in the current transmission mode.
  • the program carries out data transmission.
  • the current transmission mode of the UE-02 includes at least two transmission schemes, where the at least two transmission schemes include a beamforming transmit diversity transmission scheme, and the at least two transmission schemes may further include an open loop air separation Multiplex transmission schemes, or the at least two transmission schemes may further include a closed-loop space division multiplexing transmission scheme, or the at least two transmission schemes may further include a multi-user multiple-input multiple-output transmission scheme, or the at least two
  • the transmission scheme may also include an open-loop transmit diversity transmission scheme, which is not limited in this implementation environment.
  • the current TM of the UE-02 includes only two transmission schemes of a non-transmission diversity MIMO transmission scheme and an NBTD transmission scheme (for example, when the current TM is TM4, the current TM includes transmission diversity.
  • the NBTD transmission scheme may be referred to as a transmit diversity transmission scheme, such as open loop transmit diversity, and the UE-02 may only adopt a non-transmit diversity MIMO transmission scheme and an NBTD transmission scheme according to the indication of the base station 01.
  • a transmission scheme for data transmission, and a non-transmission diversity MIMO transmission scheme can enable different UEs to perform space division multiplexing of time-frequency resources, thereby improving spectrum efficiency, and is generally applicable to a scenario with better channel quality, and an NBTD transmission scheme. It can effectively combat channel fading, improve the signal-to-noise ratio at the receiving end, and ensure the reliability of the data transmitted by the UE. It is usually applicable to scenarios with poor channel quality. If the UE-02 current transmission MIMO transmission scheme diversity for data transmission based on non-, when a change in channel quality occurs, and the base station 01 may instruct the UE-02 for data transmission based NBTD transmission scheme, so that it will present the following problems:
  • the UE-02 can only perform data transmission according to one of the non-transmission diversity MIMO transmission scheme and the NBTD transmission scheme, and the data transmission flexibility is low;
  • UE-02 when UE-02 performs data transmission according to the non-transmission diversity MIMO transmission scheme, different UEs in the cell served by the base station 01 can perform space division multiplexing of time-frequency resources, and the UE-02 is in accordance with the NBTD transmission scheme.
  • different UEs in the cell served by the base station 01 cannot perform space division multiplexing of time-frequency resources, resulting in low utilization of time-frequency resources and low spectrum efficiency;
  • the indication of the base station 01 to the UE-02 may be extreme.
  • the method for indicating a transmission scheme may be performed by a base station 01 in the implementation environment shown in FIG.
  • the transmission scheme indication method may include:
  • Step 201 Generate transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in the current transmission mode, and the at least two transmission schemes include a beamforming transmit diversity transmission scheme.
  • Step 202 Send transmission scheme indication information.
  • the base station generates and transmits the transmission scheme indication information to the UE, where the transmission scheme indication information is used to indicate one of the at least two transmission schemes included in the current transmission mode.
  • the transmission scheme at least two transmission schemes, includes a beamforming transmit diversity transmission scheme. Since the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme, the UE may use a beamforming transmit diversity transmission scheme to perform data transmission according to the indication of the base station, and solve the related technology.
  • the problem that the UE has low flexibility in transmitting data achieves the effect of improving the flexibility of the UE to transmit data.
  • the at least two transmission schemes further comprise an open loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop spatial division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the step 201 may include: generating downlink control information, where the format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information in the at least two transmission schemes included in the current transmission mode;
  • Step 202 can include transmitting downlink control information.
  • the base station generates and transmits the transmission scheme indication information to the UE, where the transmission scheme indication information is used to indicate one of the at least two transmission schemes included in the current transmission mode.
  • the transmission scheme at least two transmission schemes, includes a beamforming transmit diversity transmission scheme. Since the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme, the UE may use a beamforming transmit diversity transmission scheme to perform data transmission according to the indication of the base station, and solve the related technology.
  • the problem that the UE has low flexibility in transmitting data achieves the effect of improving the flexibility of the UE to transmit data.
  • FIG. 3 is a flowchart of a method for data transmission according to an embodiment of the present invention.
  • the data transmission method may be performed by UE-02 in the implementation environment shown in FIG. 1.
  • the data is The transmission method can include:
  • Step 301 Receive transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in the current transmission mode, where the at least two transmission schemes include a beamforming transmit diversity transmission scheme.
  • Step 302 Perform data transmission according to a transmission scheme indicated by the transmission scheme indication information.
  • the UE receives the transmission scheme indication information and performs data transmission according to the transmission scheme indicated by the transmission scheme indication information, where the transmission scheme indication information is used to indicate the current transmission mode.
  • One of at least two transmission schemes, the at least two transmission schemes comprising a beamforming transmit diversity transmission scheme. Since the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme, the UE may adopt a beamforming transmit diversity transmission scheme for data transmission, and solve the related art UE transmitting data.
  • the problem of lower flexibility has the effect of increasing the flexibility of the UE to transmit data.
  • the at least two transmission schemes further comprise an open loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop spatial division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the step 301 may include: receiving downlink control information, where a format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information in the at least two transmission schemes included in the current transmission mode;
  • the data transmission method may further include:
  • the transmission scheme corresponding to the format of the downlink control information is determined as the transmission scheme indicated by the transmission scheme indication information.
  • the UE receives the transmission scheme indication information and performs data transmission according to the transmission scheme indicated by the transmission scheme indication information, where the transmission scheme indication information is used to indicate the current transmission mode.
  • One of at least two transmission schemes, the at least two transmission schemes comprising a beamforming transmit diversity transmission scheme. Since the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme, the UE may adopt a beamforming transmit diversity transmission scheme for data transmission, and solve the related art UE transmitting data.
  • the problem of lower flexibility has the effect of increasing the flexibility of the UE to transmit data.
  • FIG. 4-1 is a flowchart of another method for data transmission according to an embodiment of the present invention.
  • the data transmission method is applied to the implementation environment shown in FIG. Referring to FIG. 4-1, the data transmission method may include:
  • Step 401 The base station generates transmission scheme indication information, where the transmission scheme indication information is used to indicate one of the at least two transmission schemes included in the current transmission mode, and the at least two transmission schemes include a beamforming transmit diversity transmission scheme.
  • the data transmission method provided by the embodiment of the present invention may be used in a system consisting of a base station and a UE, where the UE may have multiple transmission modes, and each transmission mode may include at least two transmission schemes, and the UE may adopt any one of the transmission schemes. Any of the transmission schemes in the mode for data transmission.
  • the current transmission mode refers to a transmission mode used by the UE for data transmission.
  • the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include beamforming transmit diversity (English: Beamformed transmit) Diversity; abbreviated as: BTD) transmission scheme, optionally, at least two transmission schemes may further include an open-loop space division multiplexing transmission scheme, or at least two transmission schemes may further include a closed-loop space division multiplexing transmission scheme, or At least two transmission schemes may further include a multi-user multiple input multiple output transmission scheme, or at least two transmission schemes may further include an open loop transmit diversity transmission scheme, wherein the beamforming transmit diversity transmission scheme and the open loop transmit diversity transmission scheme
  • the two transmission schemes may be independent of each other, or may be a unified transmission scheme, and the unified transmission scheme may be a UTD transmission scheme, where the UTD transmission scheme includes two components: a beamforming transmit diversity transmission scheme and an open loop transmit diversity transmission scheme. Program. According to the above description, in the embodiment of the present invention, the current transmission schemes include
  • TM-1 may correspond to TM2 in LTE
  • any TM of TM-2 to TM-10 may correspond to any TM other than TM2 in the TM in LTE
  • TMTM, TM-9 and TM-10 are mutually exclusive with TMTM, TM-6 and TM-7, that is, TM-5 exists in the standard.
  • TM-5, TM-6 and TM-7 there will be no TM-8 when there are transmission schemes corresponding to TM-5, TM-6 and TM-7 in the standard.
  • TM-9 and TM-10 corresponding transmission scheme.
  • TM-2 corresponds to TM3 in LTE
  • TM-3 corresponds to TM4 in LTE
  • TM-4 corresponds to TM5 in LTE
  • TM-5 corresponds to TM6 in LTE
  • TM-6 and LTE TM7 corresponds
  • TM-7 corresponds to TM8 in LTE
  • TM-2 corresponds to TM3 in LTE
  • TM-3 corresponds to TM4 in LTE
  • TM-4 corresponds to TM5 in LTE
  • the TM6 corresponds to the TM-6 in the LTE
  • the TM-9 corresponds to the TM7 in the LTE
  • the TM-10 corresponds to the TM8 in the LTE, which is not limited in the embodiment of the present invention.
  • the open-loop transmit diversity transmission scheme is an open loop transmit diversity (English: Open Loop transmit diversity; abbreviation: OLTD) transmission scheme in LTE, and the OLTD transmission scheme refers to the transmit diversity in the LTE standard.
  • the open-loop space division multiplexing transmission scheme may be an open-loop spatial multiplexing (English: Open-loop spatial multiplexing; OLSM) transmission scheme in LTE, and the closed-loop space division multiplexing transmission scheme may be a closed loop space in LTE.
  • Multiplexed multiple input multiple output transmission scheme can be multi-user multiple input multiple output in LTE (English: Multi-user Multiple-input and multiple-) Output; abbreviation: MU-MIMO transmission scheme.
  • the current transmission mode may be any one of the foregoing TM-1 to TM-10 transmission modes.
  • the current transmission mode is TM-2.
  • each of the TM-1 to TM-10 includes a beam assignment.
  • a transmit diversity transmission scheme and each of the TMs may include a transmission scheme that is neither a beamforming transmit diversity transmission scheme nor an open loop transmit diversity transmission scheme, except for the beamforming transmit diversity transmission scheme.
  • the beamforming transmit diversity transmission scheme and the non-open loop transmit diversity transmission scheme may include, but are not limited to, the above-described open loop space division multiplexing transmission scheme, closed loop space division multiplexing transmission scheme, and multi-user multiple input multiple output transmission scheme, and each In at least two transmission schemes in the TM, in addition to the beamforming transmit diversity transmission scheme, any combination of the foregoing other transmission schemes may be included, and the open loop space division multiplexing transmission scheme and the closed loop air separation complex in the embodiment of the present invention
  • the transmission scheme and the multi-user multiple-input multiple-output transmission scheme are merely exemplary. In an actual application, other transmission schemes may also be included, which are not limited in this embodiment of the present invention.
  • the base station may generate transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in the current transmission mode. For example, the transmission scheme indication information is used to indicate the TM shown in Table 1.
  • the UE may report the CSI to the base station, and the base station may generate the transmission scheme indication information according to the CSI reported by the UE. Specifically, the base station may determine the channel quality according to the CSI reported by the UE, and then generate the transmission scheme indication information according to the channel quality.
  • the UE may report the CSI to the base station when the CSI changes, and may also report the CSI to the base station periodically, or may report the CSI to the base station at a preset time interval.
  • the specific implementation manner of the CSI reported by the UE to the base station may refer to the LTE, The embodiments of the invention are not described herein again.
  • the transmission scheme indication information may be a format of downlink control information that is sent by the base station to the UE,
  • Each of the at least two transmission schemes in the current transmission mode may correspond to a format of the downlink control information. Therefore, the base station generates the transmission scheme indication information, where the base station may generate downlink control information, for example, the downlink control information. It can be DCI in LTE.
  • the current transmission mode, the at least two transmission schemes included in the current transmission mode, and the format of the downlink control information corresponding to each of the at least two transmission schemes included in the current transmission mode may be as shown in Table 2 below:
  • the base station may generate transmission scheme indication information.
  • the transmission scheme indication information indicates the beamforming transmit diversity transmission scheme in TM-2 shown in Table 1
  • the transmission scheme indication information may be format 1A, and therefore,
  • the base station generates the transmission scheme indication information, and the base station generates the downlink control information of the format 1A, where the downlink control information of the format 1A is used to indicate the beamforming transmit diversity transmission scheme in the TM-2, where the embodiment of the present invention is This is not limited.
  • the embodiment of the present invention is described by taking the format of the transmission scheme indication information as the downlink control information.
  • the transmission scheme indication information may also be the content of the downlink control information, which is used by the embodiment of the present invention. Not limited.
  • Step 402 The base station sends the transmission plan indication information to the UE.
  • the base station may send the transmission scheme indication information to the UE.
  • the transmission scheme indication information may be in the format of the downlink control information. Therefore, the base station may send the transmission scheme indication information to the UE, where the base station may send the downlink control information to the UE, where the downlink control information may be the DCI in the LTE, and the base station may pass the physical downlink.
  • the first time-frequency resource in the control channel (English: Physical downlink control channel; PDCCH for short) transmits downlink control information to the UE, and the first time-frequency resource may be a time-frequency resource in the UE search space, and is searched in the space through the UE.
  • the downlink control information sent by the time-frequency resource to the UE is usually scrambled by using the radio network temporary identifier (English: Radio Network Temporary Identity; RNTI).
  • RNTI Radio Network Temporary Identity
  • the base station sends the downlink control information in the format 1A to the UE by using the first time-frequency resource, where the downlink control information in the format 1A is scrambled by the RNTI of the UE.
  • Step 403 The UE receives the transmission plan indication information sent by the base station.
  • the UE may receive the transmission scheme indication information sent by the base station.
  • the transmission scheme indication information may be the format of the downlink control information. Therefore, the UE may receive the downlink control information that is sent by the base station, and the downlink control information may be the DCI in the LTE.
  • the UE receives the downlink control information of the format 1A sent by the base station, where the UE can perform blind detection on the UE search space in the PDCCH according to the RNTI of the eNB, to implement the reception of the transmission scheme indication information, specifically, the UE.
  • the RNTI attempts to parse the search space in the UE according to the format of the multiple downlink control information, and then performs verification.
  • the UE can determine the format of the downlink control information, where the UE.
  • the specific implementation process of determining the format of the downlink control information and the downlink control information in the manner of the blind detection is clearly described in the related art. Therefore, the specific implementation process may refer to the related technology, and the embodiment of the present invention is no longer used herein. Narration.
  • Step 404 The UE performs data transmission according to the transmission scheme indicated by the transmission scheme indication information.
  • the UE After receiving the transmission scheme indication information sent by the base station, the UE may perform data transmission according to the transmission scheme indicated by the transmission scheme indication information sent by the base station.
  • the transmission scheme indication information may be in the format of the downlink control information, and the UE receives the downlink control information by using the blind detection manner. Therefore, after receiving the downlink control information, the UE may obtain the downlink control information.
  • the UE determines a transmission scheme corresponding to the format of the downlink control information in the at least two transmission schemes included in the current transmission mode, and determines a transmission scheme corresponding to the format of the downlink control information as the transmission scheme Indicate the transmission scheme indicated by the information, after which the UE can follow the transmission scheme
  • the transmission scheme indicated by the indication information is used for data transmission.
  • the format of the downlink control information is obtained.
  • the format of the downlink control information is format 1A, and then the UE is in the current transmission mode of the UE.
  • the transmission scheme corresponding to the format 1A is determined in at least two transmission schemes included in the TM-2, see Table 2, in the TM-2, the transmission scheme corresponding to the format 1A is a beamforming transmit diversity transmission scheme, and therefore, the UE
  • the beamforming transmit diversity transmission scheme is determined as the transmission scheme indicated by the transmission scheme indication information, and the data transmission is performed according to the beamforming transmit diversity transmission scheme.
  • the two sub schemes are transparent to the UE. That is, when the beamforming transmit diversity transmission scheme and the open loop transmit diversity transmission scheme are two sub-schemes in the UTD transmission scheme, the base station only needs to indicate the unified transmit diversity scheme to the UE without indicating the unified transmit diversity scheme to the UE.
  • the sub-program in the middle For example, when the current transmission mode of the UE is TM-8, the base station only needs to generate downlink control information in the format 2C. After receiving the downlink control information, the UE can determine and format 2C in the TM-8.
  • the transmission scheme corresponding to the format 2C is a unified transmit diversity scheme. Therefore, the UE can perform data transmission according to the unified transmit diversity scheme, specifically adopting beamforming transmit diversity in the unified transmit diversity scheme.
  • the transmission scheme performs the data transmission, and the data transmission is performed by using the open-loop transmit diversity transmission scheme in the unified transmit diversity scheme, and the UE may determine according to the CSI, which is not limited by the embodiment of the present invention.
  • the base station generates and transmits the transmission scheme indication information to the UE, and the UE performs data transmission according to the transmission scheme indicated by the transmission scheme indication information, where the transmission scheme indication information is used to indicate the current One of at least two transmission schemes included in the transmission mode, and at least two transmission schemes include a beamforming transmit diversity transmission scheme.
  • the UE may use a beamforming transmit diversity transmission scheme to perform data transmission according to the indication of the base station, and solve the related technology.
  • the problem that the UE has low flexibility in transmitting data achieves the effect of improving the flexibility of the UE to transmit data.
  • the base station may instruct the UE to perform an open-loop space division multiplexing transmission scheme (or a closed-loop space division multiplexing transmission scheme or a multi-user multiple input multiple output transmission scheme).
  • an open-loop space division multiplexing transmission scheme or a closed-loop space division multiplexing transmission scheme or a multi-user multiple input multiple output transmission scheme.
  • the base station may instruct the UE to perform data transmission according to the beamforming transmit diversity transmission scheme.
  • the base station may instruct the UE to transmit according to the open loop transmit diversity.
  • the scheme performs data transmission, that is, the base station can indicate, according to the channel quality, the UE in an open-loop space division multiplexing transmission scheme (or a closed-loop space division multiplexing transmission scheme, or a multi-user multiple-input multiple-output transmission scheme), and beamforming transmission.
  • the handover between the diversity transmission scheme and the open-loop transmit diversity transmission scheme is performed. Therefore, the indication of the UE by the base station is flexible, and the problem that the base station indicates the UE to the UE in the related art may be solved.
  • the transmission diversity scheme can be called a fallback transmission scheme (English: fallback transmission scheme), the fallback The transmission scheme can be an OLTD transmission scheme.
  • the base station can enable the UE to fall back to the fallback transmission scheme for data transmission without switching the TM.
  • each TM also includes a default transmission scheme (English: transmission Scheme, the default transmission scheme may be a non-transmission diversity MIMO transmission scheme, such as a closed-loop space division multiplexing transmission scheme, a multi-user MIMO transmission scheme, etc., when the channel quality is good,
  • the base station can enable the UE to switch to the default transmission scheme for data transmission without switching the TM.
  • the TM2 itself is a transmission diversity scheme, and does not require an additional fallback transmission scheme.
  • the UE needs to completely change the beamforming mode when the UE switches from the default transmission scheme to the fallback transmission scheme, and the UE adopting the fallback transmission scheme transmission scheme can only monopolize the time-frequency resources and cannot cooperate with other UEs.
  • the space division multiplexing of time-frequency resources is carried out, which has a great influence on the spectrum efficiency of the system.
  • at least two transmission schemes included in the current transmission mode include a beamforming transmit diversity transmission scheme, and the UE may cooperate with other UEs when performing data transmission according to the beamforming transmit diversity transmission scheme.
  • the space division resource is spatially multiplexed. Therefore, the data transmission method provided by the embodiment of the present invention has higher utilization rate of time-frequency resources and higher spectrum efficiency.
  • FIG. 4-2 to FIG. 4-2 is a schematic diagram of data transmission performed by a UE according to two transmission schemes in the same transmission mode
  • FIG. 4-3 is a schematic diagram of two UEs according to an embodiment of the present invention. Schematic diagram of data transmission for at least two transmission schemes in the transmission mode.
  • the base station 011, the base station 012, and the base station 013 are the same base station.
  • different base stations are used to identify the base stations in different transmission schemes.
  • UE-02 is any one of the UEs served by the base station.
  • the beam of the base station 011 is occupied.
  • the UEs other than the UE-02 in the UE served by the base station 011 perform data transmission occupying the beam b3, the beam b4, the beam b5, the beam b6 and the beam b7 of the base station 011 due to
  • UE-02 performs data transmission using a non-transmission diversity MIMO transmission scheme
  • different UEs served by the base station 011 can share time-frequency resources.
  • the base station 011 when the UE-02 uses a non-transmission diversity MIMO transmission scheme for data transmission, the base station 011
  • the different UEs served can perform space division multiplexing of time-frequency resources, and the utilization of time-frequency resources is high, and the spectrum efficiency is high.
  • the base station may instruct the UE-02 to perform data transmission according to the NBTD transmission scheme in the current transmission mode.
  • the UE-02 monopolizes the beam b of the base station 012, causing the base station 012 to The UEs other than the UE-02 cannot use the beam b in the serving UE. Therefore, when the UE-02 uses the NBTD transmission scheme for data transmission, different UEs served by the base station 012 cannot perform space division multiplexing of time-frequency resources. The utilization of time-frequency resources is low and the spectrum efficiency is low.
  • the transmission mode in the related art only includes two transmission schemes, and the base station 011 (or the base station 012) can only instruct the UE-02 to perform data transmission using one of the two transmission schemes, resulting in the base station 011 (or base station). 012)
  • the flexibility indicated to the UE is low.
  • Figure 4-3 illustrates a beamforming transmit diversity transmission scheme and an open loop transmit diversity transmission scheme as two independent transmission schemes.
  • UE-02 among the UEs served by the base station 011, UE-02 (FIG. 4-3) The UE-02 occupies the base station 011 when the data transmission is performed by using any one of the open-loop space division multiplexing transmission scheme, the closed-loop space division multiplexing transmission scheme, and the multi-user multiple-input multiple-output transmission scheme.
  • the beam b1 and the beam b2 are transmitted by the UEs other than the UE-02 in the UE served by the base station 011, and the beam b3, the beam b4, the beam b5, the beam b6 and the beam b7 of the base station 011 are occupied by the UE-02.
  • data transmission is performed by using any one of an open-loop space division multiplexing transmission scheme, a closed-loop space division multiplexing transmission scheme, and a multi-user multiple-input multiple-output transmission scheme, different UEs served by the base station 011 can share the base station 011.
  • Time-frequency resources therefore, UE-02 uses the open-loop space division multiplexing transmission scheme, the closed-loop space division multiplexing transmission scheme, and the multi-user multiple-input multiple-output transmission scheme to transmit data, and the base station 011
  • the different UEs served can perform space division multiplexing of time-frequency resources, and the utilization of time-frequency resources is high, and the spectrum efficiency is high.
  • the base station may instruct the UE-02 to perform data transmission according to the beamforming transmit diversity transmission scheme in the current transmission mode.
  • the UE-02 occupies the beam b1 and the beam b2 of the base station 013, and the base station 013
  • the UEs of the served UEs except the UE-02 perform data transmission occupying the beam b3, the beam b4, the beam b5, the beam b6 and the beam b7 of the base station 013, because the UE-02 performs the beamforming transmit diversity transmission scheme.
  • different UEs served by the base station 013 can share the time-frequency resources of the base station 013. Therefore, when the UE-02 uses the beamforming transmit diversity transmission scheme for data transmission, different UEs served by the base station 013 can perform time-frequency resources.
  • the space division multiplexing, the utilization of time-frequency resources is higher, and the spectrum efficiency is higher.
  • the base station may instruct the UE-02 to perform data transmission according to the open-loop transmit diversity transmission scheme in the current transmission mode.
  • the UE-02 monopolizes the beam b of the base station 012, causing the base station 012 to serve.
  • the UE in the UE except the UE-02 cannot use the beam b. Therefore, when the UE-02 uses the open-loop transmit diversity transmission scheme for data transmission, different UEs served by the base station 012 cannot perform space-time resource division and space division.
  • the utilization of time-frequency resources is low and the spectrum efficiency is low.
  • Figure 4-4 illustrates a beamforming transmit diversity transmission scheme and an open loop transmit diversity transmission scheme as two sub-transmission schemes in a unified transmit diversity scheme.
  • the UE-02 (not shown in FIG. 4-4) adopts an open-loop space division multiplexing transmission scheme and a closed-loop space division multiplexing transmission.
  • the UE-02 occupies the beam b1 and the beam b2 of the base station 011, and the UE served by the base station 011 except the UE-02
  • the external UE performs data transmission and occupies the beam b3, the beam b4, the beam b5, the beam b6, and the beam b7 of the base station 011, because the UE-02 adopts an open-loop space division multiplexing transmission scheme, a closed-loop space division multiplexing transmission scheme, and multiple users.
  • any one of the multiple input and multiple output transmission schemes performs data transmission, different UEs served by the base station 011 can share the time-frequency resources of the base station 011.
  • the UE-02 adopts an open-loop space division multiplexing transmission scheme and a closed loop.
  • data transmission is performed by any one of the space division multiplexing transmission scheme and the multi-user multiple input multiple output transmission scheme
  • different UEs served by the base station 011 can perform space division multiplexing of time-frequency resources and use of time-frequency resources. Higher rate and higher spectral efficiency
  • the base station may instruct the UE-02 to perform data transmission according to the unified transmit diversity scheme in the current transmission mode.
  • the beamforming transmit diversity transmission scheme and the open loop transmit diversity transmission in the unified transmit diversity scheme The scheme is transparent to UE-02. Therefore, UE-02 can perform data transmission according to the beamforming transmit diversity transmission scheme in the unified transmit diversity scheme, or according to the open loop transmit diversity transmission scheme in the unified transmit diversity scheme.
  • UE-02 occupies beam b1 and beam b2 of base station 013, except for UEs served by base station 013.
  • the UE outside the UE-02 uses the transmit diversity transmission scheme for data transmission to occupy the beam b3 and the beam b4 of the base station 013.
  • the beam b5, the beam b6, and the beam b7 when the UE-02 performs data transmission using the beamforming transmit diversity transmission scheme in the unified transmit diversity scheme, the different UEs served by the base station 013 can share the time-frequency resources of the base station 013,
  • the UE-02 uses the beamforming transmit diversity transmission scheme in the unified transmit diversity scheme to perform data transmission, different UEs served by the base station 013 can perform space division multiplexing of time-frequency resources, and the utilization rate of the time-frequency resources is high.
  • the spectrum efficiency is high.
  • the UE-02 may perform data transmission according to the open-loop transmit diversity transmission scheme in the unified transmit diversity scheme.
  • the UE-02 monopolizes the beam b of the base station 012, causing the UE served by the base station 012.
  • the UE other than the UE-02 cannot use the beam b. Therefore, when the UE-02 performs data transmission according to the open-loop transmit diversity transmission scheme in the unified transmit diversity scheme, different UEs served by the base station 012 cannot perform time-frequency.
  • the space division multiplexing of resources, the utilization of time-frequency resources is low, and the spectrum efficiency is low.
  • the utilization rate of the time-frequency resources of the UE -02 according to the open-loop transmit diversity transmission scheme is low, the spectrum efficiency is low, but the beamforming transmit diversity transmission provided by the embodiment of the present invention
  • the solution may provide a transition transmission scheme for the UE's transmission scheme switching process.
  • the base station may instruct the UE to perform data transmission according to the beamforming transmit diversity transmission scheme, without having to rely on the open loop transmit diversity transmission scheme.
  • the UE performs data transmission according to the beamforming transmit diversity transmission scheme different UEs served by the base station can perform space division multiplexing of time-frequency resources, and therefore, the flexibility of the UE to transmit data is high.
  • the beamforming transmit diversity transmission scheme in the embodiment of the present invention will be described in detail below.
  • a data shaping method and a data receiving method are taken as an example to describe a beamforming transmit diversity transmission scheme in detail.
  • the embodiment of the present invention further provides a data sending method and a data receiving method, and the data sending method and the data receiving method are also applicable to the implementation environment shown in FIG. 1 .
  • FIG. 5 is a flowchart of a method for sending data according to an embodiment of the present invention.
  • the data sending method may be performed by a transmitting device, where the transmitting device may be in the implementation environment shown in FIG. Base station 01, see FIG. 5, the data sending method may include:
  • Step 501 Perform precoding on a plurality of initial spatial streams to obtain a plurality of precoded data streams, where at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • Step 502 Transmit a plurality of precoded data streams.
  • the transmitting end device obtains multiple precoded data streams by precoding a plurality of initial spatial streams, and then transmits multiple precoded data streams, and multiple initial spatial streams.
  • At least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the data transmission method can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • the at least one initial spatial stream may be obtained through a transmit diversity process, or may not be subjected to transmit diversity processing.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity processing is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity. deal with.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to a Demodulation Reference Signal (DMRS) port, and different precoding vectors correspond to The DMRS port is different.
  • DMRS Demodulation Reference Signal
  • the method further includes: performing precoding on the demodulation reference signals of the plurality of initial spatial streams to obtain a plurality of precoding demodulation reference signals, and each initial spatial stream in the plurality of initial spatial streams is corresponding to one demodulation a reference signal, the precoding vector used by each initial spatial stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the transmitting end device obtains multiple precoded data streams by precoding a plurality of initial spatial streams, and then transmits multiple precoded data streams, and multiple initial spatial streams.
  • At least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the data transmission method can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • FIG. 6 is a flowchart of a method for receiving data according to an embodiment of the present invention.
  • the data receiving method may be performed by a receiving device, where the receiving device may be in the implementation environment shown in FIG. 1 .
  • the data receiving method may include:
  • Step 601 Receive a plurality of precoded data streams, where the plurality of precoded data streams are precoded by using multiple initial spatial streams, and at least two initial spatial streams of the plurality of initial spatial streams are through a pair of original spatial streams. Performed by transmit diversity processing.
  • Step 602 recover at least two initial spatial streams from the plurality of precoded data streams.
  • Step 603 Restore an original spatial stream according to at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from the plurality of pre-coded data streams by receiving the plurality of pre-coded data streams, according to at least two initial spaces.
  • the stream recovers a raw spatial stream, wherein the plurality of pre-encoded data streams are pre-coded for the plurality of initial spatial streams, and at least two of the plurality of initial spatial streams are obtained by performing an original spatial stream Transmitted diversity processing.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the data receiving method can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, each pre-edited
  • the code vector corresponds to one demodulation reference signal DMRS port, and the DMRS ports corresponding to different precoding vectors are different.
  • the method further includes: receiving, by the plurality of precoding demodulation reference signals, precoding the demodulation reference signals of the plurality of initial spatial streams, the multiple initial spatial streams.
  • Each of the initial spatial streams corresponds to a demodulation reference signal, and each of the initial spatial streams uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • Step 602 can include recovering at least two initial spatial streams from the plurality of precoded data streams based on the precoded demodulation reference signals of the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from the plurality of pre-coded data streams by receiving the plurality of pre-coded data streams, according to at least two initial spaces.
  • the stream recovers a raw spatial stream, wherein the plurality of pre-encoded data streams are pre-coded for the plurality of initial spatial streams, and at least two of the plurality of initial spatial streams are obtained by performing an original spatial stream Transmitted diversity processing.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the data receiving method can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • the data transmission method and data reception method described above with reference to FIGS. 5 and 6, and the data transmission method described below with reference to FIG. 7, the data transmission method and data reception method described in FIGS. 8 and 9, and the data transmission method described in FIG. Both can be named as a beamforming transmit diversity transmission scheme, or a beamforming based transmit diversity transmission scheme.
  • the beamforming transmit diversity transmission scheme will be described below with specific embodiments.
  • FIG. 7 is a flowchart of a method for transmitting data according to another embodiment of the present invention.
  • the data transmission method may be applied to a system consisting of a transmitting device and a receiving device.
  • the base station in the implementation environment shown in FIG. 1 may be any UE in the implementation environment shown in FIG. 1, and the system may be a MIMO system in the implementation environment shown in FIG.
  • the data transmission method may include:
  • Step 701 The transmitting end device pre-codes a plurality of initial spatial streams to obtain a plurality of pre-encoded data streams, where at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream. .
  • the transmitting end device may be the base station 01 in the implementation environment shown in FIG. 1, and the original spatial stream may correspond to the first receiving end device, and the transmitting end device is the base station in the implementation environment shown in FIG. 01:
  • the first receiving end device may be UE-02 in the implementation environment shown in FIG. 1.
  • a process of a physical channel usually includes scrambling, modulation mapping, layer mapping, precoding, resource granular mapping, and orthogonal frequency division multiplexing (English: Orthogonal) Frequency Division Multiplexing; abbreviated as: OFDM) signal generation.
  • the processing object of the physical channel is usually a codeword.
  • the codeword is usually a bit stream subjected to encoding processing (including at least channel coding processing), and the codeword is scrambled to obtain a scrambled bit stream.
  • the scrambled bit stream is subjected to modulation mapping to obtain a modulation symbol stream, and the modulation symbol stream is mapped to a plurality of symbol layers (the symbol layer is also called a spatial stream, a spatial layer), and the symbol layer is precoded to obtain a plurality of precodings.
  • the symbol stream, the pre-coded symbol stream is mapped by a resource element (English: Resource Element; abbreviation: RE), and is mapped to a plurality of resource particles, and then the resource particles are then subjected to an OFDM signal generation stage to obtain an OFDM symbol stream, and the OFDM symbol stream is subsequently passed. Antenna end The mouth is launched.
  • an OFDM symbol stream can be obtained by using an Inverse Fast Fourier Transform (IFFT).
  • IFFT Inverse Fast Fourier Transform
  • the original spatial stream may be a spatial stream obtained through layer mapping, and the spatial stream may also be referred to as a data stream, a symbol stream or a symbol layer.
  • an increase is added between layer mapping and precoding.
  • the transmit diversity processing operation is performed.
  • the transmitting end device sends data to the receiving end device
  • the partial original spatial stream after the layer mapping may be subjected to transmit diversity processing, and the partial original spatial stream after the layer mapping is not subjected to transmit diversity processing.
  • the plurality of initial spatial streams may include an initial spatial stream obtained through a transmit diversity process, and may also include an initial spatial stream that has not undergone transmit diversity processing.
  • the transmit diversity process may include, but is not limited to, space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • a precoding vector corresponding to a spatial stream may be designed to be orthogonal to a channel of a receiving device other than the target receiving device of the spatial stream to eliminate interference, obtained by precoding.
  • the precoded data stream is also referred to as a precoded symbol stream.
  • the precoding mentioned in this application can refer to various precoding schemes used by the LTE standard in the related art, such as a codebook based precoding scheme and a non-codebook based precoding scheme.
  • the number of ports used to transmit the precoded data stream is different when the processing is performed by using different transmit diversity processing methods. For example, when the transmit diversity processing mode is SFBC, the number of ports can be 2. When the transmit diversity processing mode is FSTD, The number of ports can be 4.
  • part of the initial spatial streams in the plurality of initial spatial streams may be initial spatial streams obtained through transmit diversity processing, and some of the initial spatial streams may be initial spatial streams that are not processed by transmit diversity, that is, portions.
  • the initial spatial stream is subjected to a transmit diversity process and a pre-coding process, and a part of the initial spatial stream is subjected to a pre-coding process without performing a transmit diversity process.
  • the initial spatial stream is simultaneously subjected to transmit diversity processing and pre-coding processing.
  • the transmission scheme may be referred to as a beamforming transmit diversity transmission scheme (English: Beamformed transmit diversity; abbreviated as: BTD) transmission scheme
  • an original spatial stream in the embodiment of the present invention may correspond to the first receiving end device, and multiple initial spaces At least one initial spatial stream in the stream corresponds to the second receiving end device, and at least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and another original The spatial stream corresponds to the third receiving device.
  • the transmitting end device is the base station 01 in the implementation environment shown in FIG. 1
  • an original spatial stream may correspond to the first receiving end device, where the first receiving end device may be in the implementation environment shown in FIG.
  • the UE-02 may use a BTD transmission scheme for data transmission, and at least one initial spatial stream of the plurality of initial spatial streams corresponds to the second receiving end device, and the second receiving end device may be the one shown in FIG.
  • the UE-03 in the implementation environment the UE-02 may use a non-BTD transmission scheme for data transmission, and the non-BTD transmission scheme includes but is not limited to: an open loop space division multiplexing transmission scheme, a closed loop space division multiplexing transmission scheme, a multi-user multiple input multiple output transmission scheme, etc., at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and another original spatial stream is compared with the third receiving end device
  • the third receiving end device may be UE-04 in the implementation environment shown in FIG. 1.
  • one original spatial stream is original spatial stream 1, and another original spatial stream is original spatial stream 2, and original spatial stream 1 is subjected to transmit diversity processing to obtain initial spatial stream 11, initial spatial stream 12, and original spatial stream 1 Also including a spatial stream that is not subjected to transmit diversity processing, after the original spatial stream passes through the transmit diversity process, the original spatial stream undergoes transmit diversity.
  • the processed portion and the portion that has not undergone the transmit diversity processing may be referred to as an initial spatial stream. Therefore, the original spatial stream 1 may also include an initial spatial stream 13 that is not subjected to transmit diversity processing, and the original spatial stream 2 is subjected to transmit diversity processing to obtain an initial space.
  • Flow 21 and initial spatial stream 22 then original spatial stream 1 may correspond to UE-02, initial spatial stream 13 may correspond to UE-03, and original spatial stream 2 may correspond to UE-04.
  • the data transmission method provided by the embodiment of the present invention can be applied to a single-user MIMO (Single-user MIMO; SU-MIMO for short) scenario, and can also be applied to multi-user MIMO (English: Multi-user MIMO).
  • Abbreviation: MU-MIMO) scenario part of the spatial streams in the initial spatial streams may be obtained by transmit diversity of the original spatial streams, and another part of the spatial streams may be processed by untransmitted diversity, original spatial streams and untransmitted diversity.
  • the number of spatial streams to be processed may be more than one.
  • multiple initial spatial streams may be obtained after the transmit diversity process, and the initial spatial streams may be performed on one or more original spatial streams.
  • the plurality of initial spatial streams that are precoded are obtained by performing transmit diversity on one or more original spatial streams, and the one or more original spatial streams may correspond to the same UE.
  • the multiple initial spatial streams correspond to multiple receiving end devices.
  • at least two initial spatial streams of the multiple initial spatial streams are through a single original.
  • the spatial stream is obtained by performing transmit diversity processing, and the original spatial stream corresponds to the first receiving end device, and at least one of the plurality of spatial streams is not subjected to transmit diversity processing, and the initial space that has not undergone transmit diversity processing
  • the stream corresponds to the second receiving end device, so that the same time-frequency resource is simultaneously subjected to transmit diversity and space division multiplexing, thereby improving the utilization of the time-frequency resource.
  • the transmitting end device is the base station 01
  • the first receiving end device is the UE-02
  • the second receiving end device is the UE-03
  • the base station 01 shares the port x, x+1, ..., y
  • the UE-02 transmits according to the BTD transmission scheme.
  • Data and the ports used by UE-02 are ports x+1 and x+2.
  • the transmit diversity processing mode used by UE-02 is SFBC, and the remaining ports except ports x+1 and x+2 are allocated to UE-03.
  • UE-03 uses the CLSM transmission scheme to transmit data. Therefore, in the MU-MIMO scenario, for a plurality of UEs that are simultaneously scheduled by the base station, at least one UE uses a BTD transmission scheme for data transmission.
  • the original spatial stream of the UE may further include a spatial stream that is not subjected to the transmit diversity processing, and therefore, for one or more UEs of the foregoing multiple UEs,
  • the corresponding original spatial stream may include an initial spatial stream obtained by the transmit diversity process, an initial spatial stream obtained by the untransmitted diversity process, or any combination of the two initial spatial streams, and the initial spatial stream that is not subjected to the transmit diversity process
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on an original spatial stream, and at least two of the plurality of initial spatial streams are passed to another original
  • the spatial stream is subjected to transmit diversity processing, that is, the plurality of initial spatial streams are obtained by performing transmit diversity processing on at least two different original spatial streams.
  • the original spatial stream corresponds to the first receiving end device, and the other original spatial stream corresponds to the third receiving end device, so that the same time-frequency resource is simultaneously used for transmitting diversity and spatial multiplexing, thereby improving Utilization of time-frequency resources.
  • the transmitting device is the base station 01
  • the first receiving device is the UE-02
  • the second receiving device is the UE-03
  • the third receiving device is the UE-04
  • the base station 01 has the port x, x+1, ..., y
  • UE-02 and UE-04 both use BTD transmission scheme for data transmission
  • UE-03 uses CLSM transmission scheme to transmit data
  • UE-02 uses port x+1 and x+2 to transmit data according to BTD transmission scheme
  • UE -03 uses ports x+3,...,y-2 to transmit data according to the CLSM transmission scheme
  • UE-04 uses ports y-1 and y to transmit data according to the BTD transmission scheme.
  • UE-02 and/or UE-04 can also use some ports to transmit data according to the CLSM transmission scheme, that is, in the initial spatial stream corresponding to the same UE, part of the initial spatial stream is the initial spatial stream obtained through the transmit diversity process, and the remaining The initial spatial stream is the initial for untransmitted diversity processing Spatial stream (this initial spatial stream can also be referred to as the original spatial stream).
  • multiple initial spatial streams may be pre-coded by multiple precoding vectors, and different initial spatial streams in multiple initial spatial streams correspond to different precoding vectors, and each initial spatial stream and one demodulation
  • the reference signal (English: Demodulation Reference Signal; DMRS for short) is associated with the initial spatial stream and can be precoded by the same precoding vector, and the receiving end device (such as the UE) can use the DMRS to perform the initial spatial stream. Demodulation is performed and the DMRS is identified by its DMRS port.
  • step 701 the specific implementation process of the transmitting end device performing transmit diversity on the original spatial stream and precoding the multiple initial spatial streams is clearly described in the related art, and the implementation process may refer to related The embodiments of the present invention are not described herein again.
  • Step 702 The transmitting end device transmits multiple precoded data streams to the receiving end device.
  • the transmitting device may send the multiple pre-coded data streams to the receiving device, where the receiving device may include the first receiving device, the second receiving device, and the third receiving device.
  • the first receiving end device may be the UE-02 in the implementation environment shown in FIG. 1
  • the second receiving end device may be the one shown in FIG. 1
  • the transmitting end device is the base station 01 in the implementation environment shown in FIG. 1 .
  • the UE-03 in the implementation environment is shown
  • the third receiving end device may be UE-04 in the implementation environment shown in FIG.
  • the transmitting end device transmits, to the first receiving end device, a plurality of precoded data streams corresponding to at least two initial spatial streams obtained by performing transmit diversity processing on a raw spatial stream and precoding the plurality of precoded data streams. Transmitting, to the second receiving end device, a plurality of precoded data streams corresponding to at least one of the plurality of initial spatial streams in the plurality of precoded data streams, and transmitting the plurality of initial spatial streams to the third receiving end device A plurality of precoded data streams corresponding to at least two initial spatial streams obtained by performing transmit diversity processing on another original spatial stream and precoding.
  • one original spatial stream is original spatial stream 1
  • another original spatial stream is original spatial stream 2
  • original spatial stream 1 is subjected to transmit diversity processing to obtain initial spatial stream 11, initial spatial stream 12, and original spatial stream 1
  • a spatial stream that is not subjected to transmit diversity processing.
  • the original spatial stream 1 may also include an initial spatial stream 13 that is not subjected to transmit diversity processing.
  • the original spatial stream 2 is subjected to transmit diversity processing to obtain an initial spatial stream 21 and an initial spatial stream 22, and the initial spatial stream 11 is precoded to obtain a precoded data stream 110.
  • the initial spatial stream 12 is precoded to obtain a precoded data stream 120.
  • the initial spatial stream 13 is precoded to obtain a precoded data stream 130.
  • the initial spatial stream 21 is precoded to obtain a precoded data stream 210, and the initial spatial stream 22 is precoded.
  • the precoded data stream 220 is obtained. Therefore, the transmitting device transmits the precoded data stream 110 and the precoding number to the first receiving end device.
  • Step 703 The transmitting end device pre-codes the demodulation reference signals of the multiple initial spatial streams to obtain multiple pre-coding demodulation reference signals, and each initial spatial stream in the multiple initial spatial streams corresponds to one demodulation reference signal.
  • the precoding vector used by each initial spatial stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream.
  • each initial spatial stream of the plurality of initial spatial streams corresponds to one demodulation reference signal
  • the transmitting end device may pre-code the demodulation reference signals of the multiple initial spatial streams to obtain multiple precodings.
  • the reference signal is demodulated.
  • the transmitting device can precode the corresponding demodulation reference signal using the same precoding vector as the precoding of the initial spatial stream.
  • the transmitting device may pre-code multiple initial spatial streams by using multiple precoding vectors, and different initial spatial streams correspond to different precoding vectors, each initial spatial stream is associated with a DMRS, and the DMRS is circulated with the initial space.
  • the same precoding vector is used for precoding, and the UE demodulates the initial spatial stream by using the DMRS, and the DMRS is identified by its DMRS port. It can be seen that each precoding vector corresponds to one DMRS port, and the DMRS ports corresponding to different precoding vectors are different.
  • the DMRS is used for channel demodulation, and the transmitting end device pre-codes the DMRSs of the plurality of initial spatial streams to obtain a plurality of pre-coded DMRSs, and transmits the plurality of pre-coded DMRSs.
  • each initial spatial stream corresponds to one DMRS
  • the precoded data stream obtained by precoding each initial spatial stream can be demodulated by the DMRS corresponding to the initial spatial stream, because precoding used by each initial spatial stream is used.
  • the vector is the same as the precoding vector used by the DMRS of the initial spatial stream, but the DMRS of the initial spatial stream does not need to perform transmit diversity processing.
  • the original spatial stream after the original spatial stream has obtained at least two initial spatial streams through transmit diversity, these initial spatial streams are associated with respective DMRSs, which may be different from each other.
  • the receiving end device demodulates the received precoded data stream according to the DMRS corresponding to the port of the DMRS to obtain an initial spatial stream. If at least two initial spatial streams are obtained by performing transmit diversity on the original spatial stream, after the initial spatial stream is obtained by demodulation, the transmit diversity mode used when the initial spatial stream is generated by the transmitting device is further required.
  • the original spatial stream is recovered from the at least two initial spatial streams described above.
  • Step 704 The transmitting end device sends multiple precoding demodulation reference signals to the receiving end device.
  • the transmitting end device After the transmitting end device obtains multiple precoding demodulation reference signals, it may send multiple precoding demodulation reference signals to the receiving end device. Since each initial spatial stream corresponds to one demodulation reference signal, the transmitting end device can transmit a corresponding demodulation reference signal to the corresponding receiving end device corresponding to the initial spatial stream.
  • the demodulation reference signal corresponding to the initial spatial stream 11 is S11
  • the demodulation reference signal corresponding to the initial spatial stream S12 is S12
  • the demodulation reference signal corresponding to the initial spatial stream 13 is S13
  • the demodulation corresponding to the initial spatial stream 21 is demodulated.
  • the reference signal is S21
  • the demodulation reference signal corresponding to the initial spatial stream 22 is S22
  • the precoding demodulation reference signal obtained by precoding the demodulation reference signal S11 by the transmitting end device is S110
  • the demodulation reference signal S12 is pre-processed.
  • the coded precoding demodulation reference signal is S120
  • the precoding demodulation reference signal obtained by precoding the demodulation reference signal S13 is S130
  • the precoding demodulation reference signal obtained by precoding the demodulation reference signal S21 is S210
  • the precoding demodulation reference signal obtained by precoding the demodulation reference signal S22 is S220
  • the transmitting end device sends the precoding demodulation reference signal S110 and the precoding demodulation reference signal S120 to the first receiving end device
  • the second receiving end device transmits the precoding demodulation reference signal S130, and transmits the precoding demodulation reference signal S210 and the precoding demodulation reference signal S220 to the third receiving end device.
  • the transmitting end device since the transmitting end device performs the transmit diversity processing on the initial spatial stream, the receiving end device not only needs to know the port number of the DMRS but also needs to know the transmitting end device during data demodulation.
  • the transmit diversity processing mode adopted by the transmitting device includes, but is not limited to, space-time transmit diversity processing and space-frequency transmit diversity processing. Or space time-frequency transmit diversity processing. The following describes the case where the transmitting end device is the base station and the receiving end device is the UE. When the transmitting end device is the UE and the receiving end device is the base station, the following description can be referred to.
  • the transmitting end device may send the port information of the DMRS corresponding to each initial spatial stream (such as a port identifier) and/or the information of the transmit diversity processing mode used by the initial spatial stream to the receiving end device through the downlink signaling, and receive
  • the terminal device may perform data demodulation according to the port information of the DMRS corresponding to each initial spatial stream and/or the transmit diversity processing mode used by the initial spatial stream, where the transmitting device may send the initial space to the receiving device in the following manners.
  • the port information of the DMRS corresponding to the flow and/or the information of the transmit diversity processing method used by the initial spatial stream :
  • Manner 1 The transmitting end device sends, by using downlink signaling, the port identifier of the DMRS corresponding to each initial spatial stream and the information of the transmit diversity processing mode corresponding to each initial spatial stream.
  • the information about the processing method of the transmit diversity corresponding to each initial spatial stream is that the transmitting end device performs the transmit diversity processing on the original spatial stream to obtain the corresponding initial spatial stream. Transmit information about the diversity processing method.
  • the base station indicates, by using downlink signaling, that the UE-02 base station sends the port identifier of the DMRS to x+1 and x+2, and indicates that the diversity transmission processing mode adopted by the UE-02 base station is space-time transmit diversity processing; for example, the base station passes the downlink.
  • the signaling indicates that the port identifier of the MME station transmitted by the UE-02 base station is x, x+1, x+2, and x+3, and indicates that the transmit diversity processing mode adopted by the UE-02 base station is space-frequency transmit diversity processing.
  • a fixed number of bits (Chinese: bits) can be allocated to specify the transmit diversity processing mode.
  • a 2-bit indication transmit diversity processing mode can be used, and 2 bits can indicate four types of transmit diversity.
  • the processing mode for example, 00 represents space-time transmit diversity processing, and 01 represents space-frequency transmit diversity processing.
  • other methods may be used to indicate the transmit diversity processing manner.
  • the base station needs to indicate which initial spatial streams pass the transmit diversity processing and the transmit diversity. Processing mode, which initial spatial streams are not processed by transmit diversity.
  • Manner 2 The transmitting end device sends the port identifier of the DMRS corresponding to each initial spatial stream by using downlink signaling, where the number of ports or ports of the DMRS corresponding to each initial spatial stream uniquely corresponds to one type of transmitting diversity processing.
  • the port identifier or the number of ports of the DMRS corresponding to the initial spatial stream may indicate a transmit diversity processing mode, and the port identifier or the number of ports has a mapping relationship with the transmit diversity processing mode, where the DMRS corresponding to each initial spatial stream
  • the number of ports or ports uniquely corresponds to one type of transmit diversity processing.
  • the receiving end device can determine the transmit diversity processing mode according to the port identifier of the DMRS or the number of ports and the mapping relationship. For example, the mapping relationship is that ports x+1 and x+2 must use space-time transmit diversity processing, or that two ports must use space-time transmit diversity processing.
  • the receiving end device obtains the port identifier of the DMRS corresponding to the initial spatial stream by using the downlink signaling to be x+1 and x+2, determining, according to the mapping relationship, the transmit diversity processing mode used by the transmitting end device is space-time transmit diversity processing. .
  • Manner 3 The transmitting end device sends the information of the transmit diversity processing mode corresponding to each initial spatial stream by using downlink signaling, where the transmit diversity processing mode corresponding to each initial spatial stream uniquely corresponds to a port of a group of DMRSs.
  • the information of the transmit diversity processing mode may be an identifier of the transmit diversity processing mode, or the transmitting end device may indicate the transmit diversity processing mode by using one or more bits.
  • the transmit diversity processing mode corresponding to the initial spatial stream may indicate a mapping between the DMRS port, the transmit diversity processing mode, and the port identifier, where the transmit diversity processing mode used by each initial spatial stream is uniquely corresponding to a group.
  • the port of the DMRS, the receiving end device can determine the port of the DMRS according to the transmit diversity processing mode and the mapping relationship.
  • the base station indicates, by using downlink signaling, that the UE-2 base station adopts a transmit diversity processing mode that is a space-time transmit diversity process, and the mapping relationship is: using space-time transmit diversity processing for transmitting diversity processing, ports x+1 and x+2 must be used. Then, according to the transmit diversity processing mode indicated by the base station and the mapping relationship, the UE-02 can know that the port numbers of the DMRS are x+1 and x+2.
  • Manner 4 The transmitting device sends the number of ports of the DMRS corresponding to each initial spatial stream by using downlink signaling, where the number of ports corresponding to each initial spatial stream corresponds to only one type of transmitting diversity processing and one group of DMRS ports. .
  • the number of ports of the DMRS through the initial spatial stream indicates the transmit diversity processing mode used by the initial spatial stream and the port of the DMRS, and the mapping between the transmit diversity processing mode, the number of ports of the DMRS, and the port of the DMRS, each having a mapping relationship
  • the number of ports of the DMRS corresponding to the initial spatial stream uniquely corresponds to one type of transmit diversity processing and one set of DMRS ports.
  • the receiving end device can determine the transmit diversity processing mode and the port of the DMRS according to the number of ports of the DMRS and the mapping relationship.
  • the base station indicates, by using the downlink signaling, that the number of ports of the DMRS of the initial spatial stream of the UE-02 is 2, and the mapping relationship is: the number of ports used is 2, and the space diversity transmit processing is used to perform the transmit diversity processing and the spatial stream.
  • the DMRS must use port numbers x+1 and x+2.
  • the UE-02 may determine, according to the number of DMRS ports of the initial spatial stream indicated by the base station, and the mapping relationship, that the diversity transmission processing mode used by the initial spatial stream is space-time transmit diversity processing, and the port number of the DMRS of the initial spatial stream is x+1. With x+2.
  • the transmitting end device sends, by using downlink signaling, the number of ports of the DMRS corresponding to each initial spatial stream and the information of the processing method of the transmit diversity corresponding to each initial spatial stream, where the number of ports of the DMRS corresponding to each initial spatial stream
  • the transmit diversity processing method corresponding to each initial spatial stream uniquely corresponds to a group of DMRS ports.
  • the number of ports of the DMRS corresponding to the initial spatial stream and the transmit diversity processing manner corresponding to the initial spatial stream indicate the port of the DMRS corresponding to the initial spatial stream, the diversity of the transmission processing mode, the number of ports of the DMRS, and the port of the DMRS.
  • There is a mapping relationship wherein the number of ports of the DMRS corresponding to each initial spatial stream and the transmission diversity processing manner corresponding to each initial spatial stream uniquely correspond to a group of DMRS ports.
  • the receiving end device may determine the port of the DMRS according to the number of ports of the DMRS indicated by the transmitting end device and the transmit diversity processing manner corresponding to the initial spatial stream and the mapping relationship.
  • the base station indicates, by using the downlink signaling, that the diversity transmission processing method corresponding to the initial spatial stream of the UE-02 is an idle-time transmit diversity process, and the number of ports of the DMRS is two, and the mapping relationship is: the transmit diversity processing mode is an idle-time transmit diversity process and The initial spatial stream with DMRS port number 2 must use ports with DMRS port numbers x+1 and x+2.
  • the spatial stream obtained by layer mapping in the existing LTE standard is used to represent the original spatial stream mentioned in the embodiment of the present invention or not transmitted.
  • the spatial stream of diversity processing can be generally referred to as any coded and modulated process, and needs to be precoded, in addition to the spatial stream obtained after layer mapping in the LTE standard.
  • the transmitted data stream (for example, a stream of modulation symbols) will not be described here.
  • Step 705 The receiving end device receives a plurality of pre-encoded data streams, where the plurality of pre-encoded data streams are pre-coded by the plurality of initial spatial streams, and at least two initial spatial streams of the plurality of initial spatial streams are through one
  • the original spatial stream is obtained by transmit diversity processing.
  • the receiving end device may receive multiple pre-coded data streams sent by the transmitting end device, and the receiving end device may be the first receiving end device, the second receiving end device, or the third receiving end device.
  • the first receiving end device may be the UE-02 in the implementation environment shown in FIG. 1
  • the second receiving end device may be the one shown in FIG. 1 , where the transmitting end device is the base station 01 in the implementation environment shown in FIG. 1 .
  • the UE-03 in the implementation environment is shown
  • the third receiving end device may be UE-04 in the implementation environment shown in FIG.
  • the receiving end device when the receiving end device is the first receiving end device, the receiving end device receives at least two of the plurality of precoded data streams transmitted by the transmitting end device by performing transmit diversity processing on a raw spatial stream and precoding.
  • the pre-coded data stream corresponding to the initial spatial stream when the receiving end device is the second receiving end device, the receiving end device receives at least one of the plurality of pre-coded data streams transmitted by the transmitting end device and the plurality of initial spatial streams.
  • the pre-coded data stream corresponding to the spatial stream when the receiving end device is the third receiving end device, the receiving end device receives the transmit diversity processing of the other original spatial stream in the plurality of initial spatial streams transmitted by the transmitting end device and pre-processes Encoding the precoded data stream corresponding to at least two initial spatial streams.
  • the receiving device when referring to step 702, when the receiving device is the first receiving device, the receiving device receives the precoded data stream 110 and the precoded data stream 120 transmitted by the transmitting device, and when the receiving device is the second receiving device. When the device is in the end, the receiving device receives the precoded data stream 130 transmitted by the transmitting device, and when the receiving device is the third receiving device, the receiving device receives the precoded data stream 210 and the precoded data stream transmitted by the transmitting device. 220.
  • Step 706 Receive multiple precoding demodulation reference signals, and multiple precoding demodulation reference signals are used for multiple initial spaces.
  • the demodulation reference signal of the stream is precoded, and each initial spatial stream in the plurality of initial spatial streams corresponds to one demodulation reference signal, and the precoding vector used in each initial spatial stream is demodulated with each initial spatial stream.
  • the precoding vector used by the reference signal is the same.
  • the receiving end device may receive multiple precoding demodulation reference signals sent by the transmitting end device, and the multiple precoding demodulation reference signals are obtained by precoding the demodulation reference signals of the multiple initial spatial streams, and multiple initial spatial streams are obtained.
  • Each of the initial spatial streams corresponds to a demodulation reference signal, and each of the initial spatial streams uses a precoding vector that is the same as a precoding vector used by the demodulation reference signal of each initial spatial stream, and the receiving device may be the first The receiving end device, the second receiving end device or the third receiving end device.
  • the first receiving end device may be the UE-02 in the implementation environment shown in FIG. 1
  • the second receiving end device may be the one shown in FIG. 1 , where the transmitting end device is the base station 01 in the implementation environment shown in FIG. 1 .
  • the UE-03 in the implementation environment is shown
  • the third receiving end device may be UE-04 in the implementation environment shown in FIG.
  • the receiving end device when referring to step 704, when the receiving end device is the first receiving end device, the receiving end device receives the precoding demodulation reference signal S110 and the precoding demodulation reference signal S120 sent by the transmitting end device, when the receiving end device When the second receiving end device is the second receiving end device, the receiving end device receives the precoding demodulation reference signal S130 sent by the transmitting end device, and when the receiving end device is the third receiving end device, the receiving end device receives the precoding demodulation sent by the transmitting end device.
  • the reference signal S210 and the precoding demodulation reference signal S220 when the receiving end device is the first receiving end device, the receiving end device receives the precoding demodulation reference signal S110 and the precoding demodulation reference signal S120 sent by the transmitting end device, when the receiving end device When the second receiving end device is the second receiving end device, the receiving end device receives the precoding demodulation reference signal S130 sent by the transmitting end device, and when the receiving end device is the third receiving end device,
  • Step 707 The receiving end device recovers at least two initial spatial streams from the plurality of precoded data streams.
  • the receiving end device may recover at least two initial spatial streams from the plurality of precoded data streams.
  • the receiving end device may perform precoding demodulation according to the at least two initial spatial streams.
  • the reference signal recovers at least two initial spatial streams from the plurality of precoded data streams.
  • each precoding vector may correspond to one DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the DMRS is used for channel demodulation, and the transmitting end device pre-codes the DMRSs of the plurality of initial spatial streams to obtain a plurality of pre-coded DMRSs, and transmits the plurality of pre-coded DMRSs.
  • each initial spatial stream corresponds to one DMRS
  • the precoded data stream obtained by precoding each initial spatial stream can be demodulated by the DMRS corresponding to the initial spatial stream, because precoding used by each initial spatial stream is used.
  • the vector is the same as the precoding vector used by the DMRS of the initial spatial stream, but the DMRS of the initial spatial stream does not need to perform transmit diversity processing.
  • these initial spatial streams are associated with respective DMRSs, which may be different from each other.
  • the receiving device can demodulate the received precoded data stream according to the DMRS corresponding to the port of the DMRS to obtain an initial spatial stream.
  • the receiving end device needs to recover the at least two initial spatial streams from the plurality of pre-coded data streams, and obtain the pre-coded DMRSs of the at least two initial spatial streams and the DMRSs corresponding to the at least two initial spatial streams. port. Therefore, the receiving end device further receives a plurality of precoding DMRSs, wherein the plurality of precoding DMRSs are precoded by demodulating reference signals of the plurality of initial spatial streams, wherein each initial spatial stream corresponds to one DMRS, the precoding vector used by each initial spatial stream is the same as the precoding vector used by the DMRS of each initial spatial stream.
  • each preamble stream uses a precoding vector that is the same as a precoding vector used by each DMRS of the initial spatial stream
  • the at least two may be demodulated according to the precoding DMRS and DMRS ports of the at least two initial spatial streams.
  • the receiving end device when the receiving end device is the first receiving end device, the receiving end device recovers the initial spatial stream 11 and the initial spatial stream 12 according to the precoding demodulation reference signal S110 and the precoding demodulation reference signal S120; When the device is the second receiving end device, the receiving end device recovers the initial spatial stream 13 according to the precoding demodulation reference signal S130; When the terminating device is the third receiving device, the receiving device recovers the initial spatial stream S220 according to the precoding demodulation reference signal S210 and the precoding demodulation reference signal S210.
  • the process for the receiver device to recover the initial spatial stream from the pre-coded data stream according to the pre-coded demodulation reference signal of the initial spatial stream is clearly described in the related art, and the specific implementation process may refer to related technologies. The examples are not described here.
  • Step 708 The receiving end device recovers an original spatial stream according to the at least two initial spatial streams.
  • the receiving end device After the receiving end device recovers at least two initial spatial streams, if at least two initial spatial streams are obtained by transmitting and diversitying a raw spatial stream, the receiving end device may recover a original space according to at least two initial spatial streams. flow. Specifically, the receiving end device may determine, according to the related description in step 704, a transmit diversity processing manner corresponding to the at least two initial spatial streams, and further recover an original spatial stream according to the at least two initial spatial streams and the corresponding transmit diversity processing manner.
  • the receiving end device may determine that the initial spatial stream 11 and the initial spatial stream 12 correspond to each other.
  • the transmit diversity processing mode, the transmit diversity processing method corresponding to the initial spatial stream 11 and the initial spatial stream 12 may be space-time transmit diversity processing, after which the receiving end device according to the initial spatial stream 11, the initial spatial stream 12, and the space-time transmit diversity Processing, recovering the original spatial stream 1.
  • the receiving end device when the receiving end device is the second receiving end device, since the initial spatial stream 13 has not undergone transmit diversity processing, the receiving end device does not need to perform this step 708.
  • the receiving end device may determine that the initial spatial stream 21 and the initial spatial stream 22 correspond to each other.
  • the transmit diversity processing mode, the transmit diversity processing mode corresponding to the initial spatial stream 21 and the initial spatial stream 22 may be a space frequency transmit diversity process, and then, the receiving end device according to the initial spatial stream 21, the initial spatial stream 22, and the space-frequency transmit diversity. Processing, restore the original spatial stream 2.
  • the transmitting end device obtains multiple precoded data streams by precoding a plurality of initial spatial streams, and then transmits multiple precoded data streams to the receiving end device, and more At least two initial spatial streams in the initial spatial stream are obtained by performing transmit diversity processing on a raw spatial stream, and the receiving end device recovers at least two initial spatial streams from the plurality of precoded data streams, and then according to at least two The initial spatial stream recovers a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the data transmission method can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • FIG. 8 is a flowchart of a method for sending data according to another embodiment of the present invention.
  • the data sending method may be performed by a transmitting device, where the transmitting device may be the implementation environment shown in FIG. 1 .
  • the data sending method may include:
  • Step 801 Perform precoding on at least two initial spatial streams to obtain multiple precoded data streams, at least two initials.
  • the spatial stream is obtained by performing transmit diversity processing on a raw spatial stream.
  • Step 802 Transmit a plurality of precoded data streams.
  • the transmitting end device obtains a plurality of precoded data streams by precoding at least two initial spatial streams, and then transmits a plurality of precoded data streams, at least two initials.
  • the spatial stream is obtained by performing transmit diversity processing on a raw spatial stream.
  • the data transmission method provided by the embodiment of the present invention can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, because at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream. Utilization of time-frequency resources.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the method further includes: precoding the demodulation reference signals of the at least two initial spatial streams to obtain a plurality of precoding demodulation reference signals, and each initial spatial stream of the at least two initial spatial streams corresponds to one Demodulating the reference signal, the precoding vector used by each initial spatial stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the transmitting end device obtains a plurality of precoded data streams by precoding at least two initial spatial streams, and then transmits a plurality of precoded data streams, at least two initials.
  • the spatial stream is obtained by performing transmit diversity processing on a raw spatial stream.
  • the data transmission method provided by the embodiment of the present invention can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, because at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream. Utilization of time-frequency resources.
  • FIG. 9 is a flowchart of a method for receiving another data according to an embodiment of the present invention.
  • the data receiving method may be performed by a receiving device, where the receiving device may be the implementation environment shown in FIG. 1 .
  • the data receiving method may include:
  • Step 901 Receive a plurality of precoded data streams, where the plurality of precoded data streams are precoded by at least two initial spatial streams, where at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream. .
  • Step 902 recover at least two initial spatial streams from the plurality of precoded data streams.
  • Step 903 Restore an original spatial stream according to at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from the plurality of pre-coded data streams by receiving the plurality of pre-coded data streams, according to at least two initial spaces.
  • the stream recovers a raw spatial stream, wherein the plurality of precoded data streams are obtained by precoding at least two initial spatial streams, and at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the data receiving method provided by the embodiment of the present invention can simultaneously transmit and diversity the same time-frequency resource, because at least two initial spatial streams in the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream. Space division multiplexing improves the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the method further includes: receiving a plurality of precoding demodulation reference signals, wherein the plurality of precoding demodulation reference signals are precoded by demodulating reference signals of the at least two initial spatial streams, at least two initial Each initial spatial stream in the spatial stream corresponds to a demodulation reference signal, and each preamble stream uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • Step 902 can include recovering at least two initial spatial streams from the plurality of precoded data streams based on the precoded demodulation reference signals of the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from the plurality of pre-coded data streams by receiving the plurality of pre-coded data streams, according to at least two initial spaces.
  • the stream recovers a raw spatial stream, wherein the plurality of precoded data streams are obtained by precoding at least two initial spatial streams, and at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the data receiving method provided by the embodiment of the present invention can simultaneously transmit and diversity the same time-frequency resource, because at least two initial spatial streams in the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream. Space division multiplexing improves the utilization of time-frequency resources.
  • FIG. 10 is a flowchart of a method for transmitting data according to another embodiment of the present invention.
  • the data transmission method can be applied to a system consisting of a transmitting device and a receiving device.
  • the UE can be any of the UEs in the implementation environment shown in FIG. 1.
  • the receiver device can be the base station 01 in the implementation environment shown in FIG. 1, and the system can be the MIMO system in the implementation environment shown in FIG.
  • the data transmission method may include:
  • Step 1001 The transmitting end device pre-codes at least two initial spatial streams to obtain a plurality of pre-encoded data streams, where at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the transmitting end device may be a UE, and the receiving end device may be a base station.
  • the transmitting end device is any UE in the implementation environment shown in FIG. 1, for example, UE-02, and the receiving end device may
  • the base station 01 in the implementation environment shown in FIG. 1 an original spatial stream may correspond to the first transmitting end device, which is also UE-02.
  • the embodiment of the present invention is described by taking an LTE system as an example.
  • a process of a physical channel usually includes scrambling, modulation mapping, layer mapping, transform precoding, precoding, resource granular mapping, OFDM signal generation, and physical channel.
  • the processing object is usually a codeword
  • the codeword is usually a bit stream subjected to encoding processing (including at least channel encoding processing)
  • the codeword is scrambled to obtain a scrambled bit stream
  • the scrambled bit stream is subjected to modulation mapping to obtain a modulation symbol stream, and the modulation is performed.
  • the symbol stream is mapped by the layer, it is mapped to multiple symbol layers (the symbol layer is also called spatial stream, spatial layer), and the symbol layer is subjected to transform precoding and precoding precoding to obtain a plurality of precoded symbol streams, precoding symbols.
  • the flow passes through the resource particle mapping and is mapped onto a plurality of resource particles, which then pass through the OFDM signal generation stage to obtain an OFDM symbol stream, which is then transmitted through the antenna port.
  • the original spatial stream may be a spatial stream obtained through layer mapping, and the spatial stream may also be The data stream, the symbol stream or the symbol layer is called.
  • a transmit diversity processing operation is added between the layer mapping and the transform precoding.
  • the transmitting end device sends data to the receiving end device, the layer may be mapped to the original.
  • the spatial stream is subjected to transmit diversity processing to obtain an initial spatial stream.
  • the transmit diversity process may include, but is not limited to, space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • the method in this embodiment is equivalent to performing two-level precoding on the initial spatial stream after the layer mapping, which can be represented.
  • Y F1(F2(S)), where F2 denotes precoding corresponding to transmit diversity (ie, transmit diversity processing), and F1 denotes beamforming precoding (ie, precoding in the conventional sense, which can be defined in the LTE standard) Precoding), S represents the original spatial stream.
  • the number of ports used to transmit the precoded data stream is different when the processing is performed by using different transmit diversity processing methods. For example, when the transmit diversity processing mode is SFBC, the number of ports can be 2. When the transmit diversity processing mode is FSTD, The number of ports can be 4.
  • At least two initial spatial streams may be initial spatial streams obtained through transmit diversity processing, and a transmission scheme for simultaneously performing transmit diversity processing and precoding processing on the initial spatial streams may be referred to as a BTD transmission scheme, and the present invention
  • An original spatial stream in an embodiment may correspond to a first transmitting end device.
  • the first transmitting end device is also the transmitting end device in this embodiment.
  • an original spatial stream may be associated with the UE- Corresponding to 02, the UE-02 can use the BTD transmission scheme for data transmission.
  • the original spatial stream is the original spatial stream 1
  • the initial spatial stream can be obtained after the original spatial stream passes the transmit diversity processing. Therefore, the original spatial stream 1 can correspond to the UE-02.
  • At least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream, where the original spatial stream corresponds to the first transmitting end device, and the transmitting end device is UE-02, and the receiving end device is a base station.
  • 01 UE-02 has a common port x, x+1, ..., y, UE-02 can use port x+1 and x+2 to transmit data according to the BTD transmission scheme.
  • At least two initial spatial streams may be precoded by at least two precoding vectors, and different initial spatial streams in at least two initial spatial streams correspond to different precoding vectors, and each initial spatial stream is Associated with the DMRS, the DMRS and the initial spatial stream may be precoded by the same precoding vector, and the receiving end device (such as a base station) may demodulate the initial spatial stream by using the DMRS, and the DMRS is identified by its DMRS port.
  • step 1001 the specific implementation process of transmitting and collecting the original spatial stream by the transmitting end device and precoding the at least two initial spatial streams is clearly described in the related art, and the implementation process can refer to the implementation process. Related embodiments of the present invention are not described herein again.
  • Step 1002 The transmitting end device transmits multiple precoded data streams to the receiving end device.
  • the device may send the multiple pre-coded data streams to the receiving device, where the transmitting device may be the first transmitting device, which may be the UE in the implementation environment shown in FIG. -02, the receiving end device may be the base station 01 in the implementation environment shown in FIG. 1.
  • the transmitting end device transmits, to the receiving end device, a plurality of precoded data streams corresponding to at least two initial spatial streams obtained by performing transmit diversity processing on a raw spatial stream and precoding.
  • the original spatial stream is the original spatial stream 1
  • the original spatial stream 1 is subjected to transmit diversity processing to obtain an initial spatial stream 11 and an initial spatial stream 12, and the initial spatial stream 11 is precoded to obtain a precoded data stream 110, and the initial spatial stream 12 is preprocessed.
  • the coded precoded data stream 120 is transmitted, and the transmitting device transmits the precoded data stream 110 and the precoded data stream 120 to the receiving end device.
  • Step 1003 The transmitting end device performs precoding on the demodulation reference signals of the at least two initial spatial streams to obtain multiple precoding demodulation reference signals, and each initial spatial stream in the at least two initial spatial streams corresponds to one demodulation reference.
  • the precoding vector used by each initial spatial stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream.
  • each of the at least two initial spatial streams corresponds to one demodulation reference signal
  • the transmitting device can pre-code the demodulation reference signals of the at least two initial spatial streams to obtain multiple The precoding demodulation reference signal
  • the transmitting end device may precode the corresponding demodulation reference signal using the same precoding vector as the precoding of the initial spatial stream.
  • the transmitting device may pre-code at least two initial spatial streams by using at least two precoding vectors, the different initial spatial streams corresponding to different precoding vectors, each initial spatial stream being associated with a DMRS, the DMRS and the initial
  • the spatial stream is precoded by the same precoding vector, and the base station can demodulate the initial spatial stream by means of the DMRS, and the DMRS is identified by its DMRS port. It can be seen that each precoding vector corresponds to one DMRS port, and the DMRS ports corresponding to different precoding vectors are different.
  • the DMRS is used for channel demodulation, and the transmitting end device pre-codes the DMRSs of the at least two initial spatial streams to obtain a plurality of pre-coded DMRSs, and transmits the plurality of pre-coded DMRSs.
  • each initial spatial stream corresponds to one DMRS
  • the precoded data stream obtained by precoding each initial spatial stream can be demodulated by the DMRS corresponding to the initial spatial stream, because precoding used by each initial spatial stream is used.
  • the vector is the same as the precoding vector used by the DMRS of the initial spatial stream, but the DMRS of the initial spatial stream does not need to perform transmit diversity processing.
  • the original spatial stream after the original spatial stream has obtained at least two initial spatial streams through transmit diversity, these initial spatial streams are associated with respective DMRSs, which may be different from each other.
  • the receiving end device demodulates the received precoded data stream according to the DMRS corresponding to the port of the DMRS to obtain an initial spatial stream. If at least two initial spatial streams are obtained by performing transmit diversity on the original spatial stream, after the initial spatial stream is obtained by demodulation, the transmit diversity mode used when the initial spatial stream is generated by the transmitting device is further required.
  • the original spatial stream is recovered from the at least two initial spatial streams described above.
  • Step 1004 The transmitting end device sends multiple precoding demodulation reference signals to the receiving end device.
  • the transmitting end device After the transmitting end device obtains multiple precoding demodulation reference signals, it may send multiple precoding demodulation reference signals to the receiving end device.
  • the demodulation reference signal corresponding to the initial spatial stream 11 is S11
  • the demodulation reference signal corresponding to the initial spatial stream S12 is S12
  • the precoding demodulation reference signal obtained by precoding the demodulation reference signal S11 by the transmitting end device is used.
  • the precoding demodulation reference signal obtained by precoding the demodulation reference signal S12 is S120
  • the transmitting end device sends the precoding demodulation reference signal S110 and the precoding demodulation reference signal S120 to the receiving end device.
  • the transmitting end device since the transmitting end device performs the transmit diversity processing on the initial spatial stream, the receiving end device not only needs to know the port number of the DMRS but also needs to know the transmitting end device during data demodulation.
  • the transmit diversity processing mode adopted by the transmitting device includes, but is not limited to, space-time transmit diversity processing and space-frequency transmit diversity processing. Or space time-frequency transmit diversity processing. The following takes the case where the transmitting end device is the UE and the receiving end device is the base station as an example.
  • the transmitting end device may send the port information (such as the port identifier) of the DMRS corresponding to each initial spatial stream and/or the information of the transmit diversity processing mode used by the initial spatial stream to the receiving end device through the uplink signaling, and receive
  • the terminal device may perform data demodulation according to the port information of the DMRS corresponding to each initial spatial stream and/or the transmit diversity processing mode used by the initial spatial stream, where the transmitting device may send the initial space to the receiving device in the following manners.
  • the port information of the DMRS corresponding to the flow and/or the information of the transmit diversity processing method used by the initial spatial stream :
  • Manner 1 The transmitting device sends, by using uplink signaling, the port identifier of the DMRS corresponding to each initial spatial stream and the information of the transmit diversity processing mode corresponding to each initial spatial stream.
  • each of the initial spatial streams corresponds to a transmit diversity process
  • the information of the mode is information of the transmit diversity processing mode of the corresponding initial spatial stream obtained by the transmitting end device in performing transmit diversity processing on the original spatial stream.
  • the UE-02 indicates that the port identifier of the DMRS sent by the base station UE-02 is x+1 and x+2 through the uplink signaling, and indicates that the diversity transmission processing mode adopted by the base station UE-02 is space-time transmit diversity processing; -02 indicates that the port identifier of the DMRS sent by the base station UE-02 is x, x+1, x+2, and x+3 through the uplink signaling, and indicates that the transmit diversity processing mode adopted by the base station UE-02 is the space frequency transmit diversity process.
  • the UE instructs the base station to transmit the diversity processing mode by using the uplink signaling, the UE can allocate a fixed number of bits to specify the transmit diversity processing mode.
  • the 2 bit indicates the transmit diversity processing mode
  • the 2 bits can indicate the four transmit diversity processing modes.
  • 00 indicates space-time transmit diversity processing
  • 01 indicates space-frequency transmit diversity processing.
  • other methods may be used to indicate the transmit diversity processing mode.
  • Manner 2 The transmitting end device sends the port identifier of the DMRS corresponding to each initial spatial stream by using the uplink signaling, where the number of ports or ports of the DMRS corresponding to each initial spatial stream uniquely corresponds to one type of transmitting diversity processing.
  • the port identifier or the number of ports of the DMRS corresponding to the initial spatial stream may indicate a transmit diversity processing mode, and the port identifier or the number of ports has a mapping relationship with the transmit diversity processing mode, where the DMRS corresponding to each initial spatial stream
  • the number of ports or ports uniquely corresponds to one type of transmit diversity processing.
  • the receiving end device can determine the transmit diversity processing mode according to the port identifier of the DMRS or the number of ports and the mapping relationship. For example, the mapping relationship is that ports x+1 and x+2 must use space-time transmit diversity processing, or that two ports must use space-time transmit diversity processing.
  • the receiving end device obtains the port identifier of the DMRS corresponding to the initial spatial stream by using the uplink signaling to be x+1 and x+2, determining, according to the mapping relationship, the transmit diversity processing mode used by the transmitting end device is space-time transmit diversity processing. .
  • the transmitting device sends the information of the transmit diversity processing mode corresponding to each initial spatial stream by using the uplink signaling, where the transmit diversity processing mode corresponding to each initial spatial stream uniquely corresponds to a group of DMRS ports.
  • the information of the transmit diversity processing mode may be an identifier of the transmit diversity processing mode, or the transmitting end device may indicate the transmit diversity processing mode by using one or more bits.
  • the transmit diversity processing mode corresponding to the initial spatial stream may indicate a mapping between the DMRS port, the transmit diversity processing mode, and the port identifier, where the transmit diversity processing mode used by each initial spatial stream is uniquely corresponding to a group.
  • the port of the DMRS, the receiving end device can determine the port of the DMRS according to the transmit diversity processing mode and the mapping relationship.
  • the UE-02 indicates, by using the uplink signaling, that the transmit diversity processing mode adopted by the base station UE-02 is space-time transmit diversity processing, and the mapping relationship is: the use of space-time transmit diversity processing for transmit diversity processing must use ports x+1 and x. +2, then according to the transmit diversity processing mode indicated by the UE-02 and the mapping relationship, the base station can know that the port numbers of the DMRS are x+1 and x+2.
  • Manner 4 The number of ports of the DMRS corresponding to each initial spatial stream is sent by the transmitting device by using the uplink signaling, where the number of ports corresponding to the DMRS corresponding to each initial spatial stream uniquely corresponds to one type of transmitting diversity processing and one group of DMRS ports. .
  • the number of ports of the DMRS through the initial spatial stream indicates the transmit diversity processing mode used by the initial spatial stream and the port of the DMRS, and the mapping between the transmit diversity processing mode, the number of ports of the DMRS, and the port of the DMRS, each having a mapping relationship
  • the number of ports of the DMRS corresponding to the initial spatial stream uniquely corresponds to one type of transmit diversity processing and one set of DMRS ports.
  • the receiving end device can determine the transmit diversity processing mode and the port of the DMRS according to the number of ports of the DMRS and the mapping relationship.
  • the number of ports of the DMRS indicating the initial spatial stream of the base station by the UE-02 is 2, and the mapping relationship is: the number of ports used is 2, and the transmit diversity processing must be performed using space-time transmit diversity processing, and the DMRS of the spatial stream must be used.
  • the base station may determine, according to the number of DMRS ports of the initial spatial stream indicated by the UE-02, and the mapping relationship, that the diversity transmission processing mode used by the initial spatial stream is space-time transmit diversity processing, and the initial null
  • the port number of the interflow DMRS is x+1 and x+2.
  • the transmitting end device sends, by using uplink signaling, the number of ports of the DMRS corresponding to each initial spatial stream and the information of the processing method of the transmit diversity corresponding to each initial spatial stream, where the number of ports of the DMRS corresponding to each initial spatial stream
  • the transmit diversity processing method corresponding to each initial spatial stream uniquely corresponds to a group of DMRS ports.
  • the number of ports of the DMRS corresponding to the initial spatial stream and the transmit diversity processing manner corresponding to the initial spatial stream indicate the port of the DMRS corresponding to the initial spatial stream, the diversity of the transmission processing mode, the number of ports of the DMRS, and the port of the DMRS.
  • There is a mapping relationship wherein the number of ports of the DMRS corresponding to each initial spatial stream and the transmission diversity processing manner corresponding to each initial spatial stream uniquely correspond to a group of DMRS ports.
  • the receiving end device may determine the port of the DMRS according to the number of ports of the DMRS indicated by the transmitting end device and the transmit diversity processing manner corresponding to the initial spatial stream and the mapping relationship.
  • the UE-02 indicates that the diversity transmission processing method corresponding to the initial spatial stream of the base station is the space-time transmit diversity processing and the number of the DMRS ports is 2, and the mapping relationship is: the transmit diversity processing mode is the space-time transmit diversity processing and The initial spatial stream with DMRS port number 2 must use ports with DMRS port numbers x+1 and x+2.
  • the original spatial stream mentioned in the embodiment of the present invention is represented by the spatial stream obtained by layer mapping in the existing LTE standard.
  • the spatial stream mentioned in the embodiment of the present invention can be generally referred to as any coded and modulated process, and needs to be precoded, in addition to the spatial stream obtained after layer mapping in the LTE standard.
  • the transmitted data stream (for example, a stream of modulation symbols) will not be described here.
  • Step 1005 The receiving end device receives multiple precoded data streams, where the plurality of precoded data streams are precoded by at least two initial spatial streams, and at least two initial spatial streams are transmitted and diversity by using an original spatial stream. Processed.
  • This step 1005 can correspond to the above step 1002.
  • the receiving device may receive the plurality of pre-coded data streams sent by the transmitting device, where the transmitting device may be the first transmitting device, and the first transmitting device may be the UE-02 in the implementation environment shown in FIG.
  • the end device is the base station 01 in the implementation environment shown in FIG.
  • the receiving end device receives a plurality of precoded data streams transmitted by the transmitting end device, where the plurality of precoded data streams are corresponding to at least two initial spatial streams obtained by performing transmit diversity processing on a raw spatial stream and precoding. Precoded data streams.
  • the receiving device receives the precoded data stream 110 and the precoded data stream 120 transmitted by the transmitting device.
  • Step 1006 Receive a plurality of precoding demodulation reference signals, where the plurality of precoding demodulation reference signals are precoded by demodulating reference signals of at least two initial spatial streams, each of at least two initial spatial streams.
  • the initial spatial stream corresponds to a demodulation reference signal, and the precoding vector used by each initial spatial stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream.
  • the receiving end device may receive multiple precoding demodulation reference signals sent by the transmitting end device, and the plurality of precoding demodulation reference signals are obtained by precoding the demodulation reference signals of the at least two initial spatial streams, at least two initial Each initial spatial stream in the spatial stream corresponds to a demodulation reference signal, and each preamble stream uses a precoding vector that is the same as a precoding vector used by the demodulation reference signal of each initial spatial stream, and the receiving device may be In the implementation environment shown in FIG. 1, the base station 01, the transmitting end device (the first receiving end device) may be the UE-02 in the implementation environment shown in FIG. 1. For example, referring to step 1004, the receiving end device receives the precoding demodulation reference signal S110 and the precoding demodulation reference signal S120 sent by the transmitting end device.
  • Step 1007 The receiving end device recovers at least two initial spatial streams from the plurality of precoded data streams.
  • the receiving end device may recover at least two initial spatial streams from the plurality of precoded data streams.
  • the receiving end device may perform precoding demodulation according to the at least two initial spatial streams.
  • the reference signal recovers at least two initial spatial streams from the plurality of precoded data streams.
  • each precoding vector may correspond to one DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the DMRS is used for channel demodulation, and the transmitting end device pre-codes the DMRSs of the plurality of initial spatial streams to obtain a plurality of pre-coded DMRSs, and transmits the plurality of pre-coded DMRSs.
  • each initial spatial stream corresponds to one DMRS
  • the precoded data stream obtained by precoding each initial spatial stream can be demodulated by the DMRS corresponding to the initial spatial stream, because precoding used by each initial spatial stream is used.
  • the vector is the same as the precoding vector used by the DMRS of the initial spatial stream, but the DMRS of the initial spatial stream does not need to perform transmit diversity processing.
  • these initial spatial streams are associated with respective DMRSs, which may be different from each other.
  • the receiving device can demodulate the received precoded data stream according to the DMRS corresponding to the port of the DMRS to obtain an initial spatial stream.
  • the receiving end device needs to recover the at least two initial spatial streams from the plurality of pre-coded data streams, and obtain the pre-coded DMRSs of the at least two initial spatial streams and the DMRSs corresponding to the at least two initial spatial streams. port. Therefore, the receiving end device further receives a plurality of precoding DMRSs, wherein the plurality of precoding DMRSs are precoded by demodulating reference signals of the plurality of initial spatial streams, wherein each initial spatial stream corresponds to one DMRS, the precoding vector used by each initial spatial stream is the same as the precoding vector used by the DMRS of each initial spatial stream.
  • each preamble stream uses a precoding vector that is the same as a precoding vector used by each DMRS of the initial spatial stream
  • the at least two may be demodulated according to the precoding DMRS and DMRS ports of the at least two initial spatial streams.
  • Initial spatial stream By way of example, the receiving end device recovers the initial spatial stream 11 and the initial spatial stream 12 according to the precoded demodulation reference signal S110 and the precoded demodulation reference signal S120.
  • the process for the receiver device to recover the initial spatial stream from the pre-coded data stream according to the pre-coded demodulation reference signal of the initial spatial stream is clearly described in the related art, and the specific implementation process may refer to related technologies. The examples are not described here.
  • Step 1008 The receiving end device recovers an original spatial stream according to the at least two initial spatial streams.
  • the receiving end device After the receiving end device recovers at least two initial spatial streams, if at least two initial spatial streams are obtained by transmitting and diversitying a raw spatial stream, the receiving end device may recover a original space according to at least two initial spatial streams. flow. Specifically, the receiving end device may determine, according to the related description in step 1004, a transmit diversity processing manner corresponding to the at least two initial spatial streams, and further recover an original spatial flow according to the at least two initial spatial streams and the corresponding transmit diversity processing manner.
  • the receiving end device determines a transmit diversity processing manner corresponding to the initial spatial stream 11 and the initial spatial stream 12, and the transmit diversity processing manner corresponding to the initial spatial stream 11 and the initial spatial stream 12 may be space-time transmit diversity processing, and then receive The end device recovers the original spatial stream 1 according to the initial spatial stream 11, the initial spatial stream 12, and the space-time transmit diversity processing.
  • the transmitting end device may directly transmit the initial spatial stream after performing the transmit diversity processing on the original spatial stream to obtain the initial spatial stream, without performing precoding.
  • the receiving end device in this embodiment is a base station, and when receiving the precoded data stream transmitted by the first transmitting end device, the base station may also receive the data stream transmitted by other transmitting end devices on the same time-frequency resource.
  • the data stream transmitted by the other transmitting end device may be a pre-encoded data stream obtained by performing transmit diversity processing and pre-coding, or may be pre-coded without undergoing transmit diversity processing.
  • the processed pre-encoded data stream may also be a data stream that has not undergone pre-coding processing only through transmit diversity processing, or may be part of the The over-transmission diversity processing and the pre-encoding processing, the partial non-transmission diversity processing, only the pre-encoding processing, and the partial-transmission diversity processing without the pre-encoding processing.
  • the receiving end device may further receive the precoded data stream 130 transmitted by the second transmitting end device, where the precoded data stream 130 may be a precoded data stream obtained by precoding the initial spatial stream 13 and the initial spatial stream. 13 is not subjected to transmit diversity processing, that is, the precoded data stream 130 is a data stream that has undergone only precoding processing without undergoing transmit diversity processing.
  • the precoded data stream 210 can be transmit diversity processing and precoding processing on the initial spatial stream 21.
  • the obtained precoded data stream 220 may be a precoded data stream obtained by performing transmit diversity processing and precoding processing on the initial spatial stream 22, that is, the precoded data stream 210 and the precoded data stream.
  • 220 is a data stream that has undergone both transmit diversity processing and pre-encoding processing.
  • the transmitting end device obtains multiple precoded data streams by precoding a plurality of initial spatial streams, and then transmits multiple precoded data streams to the receiving end device, and more At least two initial spatial streams in the initial spatial stream are obtained by performing transmit diversity processing on a raw spatial stream, and the receiving end device recovers at least two initial spatial streams from the plurality of precoded data streams, and then according to at least two The initial spatial stream recovers a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the data transmission method can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • the base station 1100 can be the base station 01 in the implementation environment shown in FIG. 1 for performing the partial methods provided by the embodiment shown in FIG. 4-1 and all the methods provided by the embodiment shown in FIG. Referring to FIG. 11, the base station 1100 may include:
  • the generating module 1110 is configured to generate transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in the current transmission mode, where the at least two transmission schemes include a beamforming transmit diversity transmission scheme .
  • the sending module 1120 is configured to send transmission scheme indication information.
  • the at least two transmission schemes further comprise an open loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop spatial division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the generating module 1110 is configured to generate downlink control information, where the format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information in the at least two transmission schemes included in the current transmission mode.
  • the sending module 1120 is configured to send downlink control information.
  • the base station provided by the embodiment of the present invention generates and transmits a transmission scheme indication information to the UE, and transmits the information.
  • the scheme indication information is used to indicate one of at least two transmission schemes included in the current transmission mode, and the at least two transmission schemes include a beamforming transmit diversity transmission scheme. Since the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme, the UE may use a beamforming transmit diversity transmission scheme to perform data transmission according to the indication of the base station, and solve the related technology.
  • the problem that the UE has low flexibility in transmitting data achieves the effect of improving the flexibility of the UE to transmit data.
  • FIG. 12-1 is a block diagram of a UE-1200 according to an embodiment of the present invention.
  • the UE-1200 may be the UE-02 in the implementation environment shown in FIG. 1 for performing some of the methods provided by the embodiment shown in FIG. 4-1 and all the methods provided by the embodiment shown in FIG. Referring to FIG. 12-1, the UE-1200 may include:
  • the receiving module 1210 is configured to receive transmission scheme indication information, where the transmission scheme indication information is used to indicate one of the at least two transmission schemes included in the current transmission mode, where the at least two transmission schemes include a beamforming transmit diversity transmission scheme. ;
  • the transmission module 1220 is configured to perform data transmission according to the transmission scheme indicated by the transmission scheme indication information.
  • the at least two transmission schemes further comprise an open loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop spatial division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the receiving module 1210 is configured to receive downlink control information, where a format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information in the at least two transmission schemes included in the current transmission mode.
  • FIG. 12-2 is a block diagram of another UE-1200 according to an embodiment of the present invention.
  • the UE-1200 further includes:
  • the first determining module 1230 is configured to determine, in the at least two transmission schemes included in the current transmission mode, a transmission scheme corresponding to a format of the downlink control information;
  • the second determining module 1240 is configured to determine, as the transmission scheme indicated by the transmission scheme indication information, a transmission scheme corresponding to the format of the downlink control information.
  • the UE receives the transmission scheme indication information and performs data transmission according to the transmission scheme indicated by the transmission scheme indication information, where the transmission scheme indication information is used to indicate at least two types included in the current transmission mode.
  • One of the transmission schemes at least two of which include a beamforming transmit diversity transmission scheme. Since the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme, the UE may adopt a beamforming transmit diversity transmission scheme for data transmission, and solve the related art UE transmitting data.
  • the problem of lower flexibility has the effect of increasing the flexibility of the UE to transmit data.
  • the base station and the UE provided by the foregoing embodiments only use the division of the foregoing functional modules when transmitting data. In actual applications, the function allocation may be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above.
  • the embodiments of the base station, the UE, and the data transmission method provided by the foregoing embodiments are in the same concept, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.
  • the base station 1300 can The base station 01 in the implementation environment shown in FIG. 1 is used to execute some of the methods provided in the embodiment shown in FIG. 4-1 and all the methods provided in the embodiment shown in FIG. 2.
  • the base station 1300 can include a processor 1310 and a transmitter 1320 coupled to the transmitter 1320.
  • the processor 1310 is configured to generate transmission scheme indication information, where the transmission scheme indication information is used to indicate one of at least two transmission schemes included in the current transmission mode, where the at least two transmission schemes include a beamforming transmit diversity transmission scheme. ;
  • the transmitter 1320 is configured to send transmission scheme indication information.
  • the at least two transmission schemes further comprise an open loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop spatial division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the processor 1310 is configured to generate downlink control information, where a format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information in the at least two transmission schemes included in the current transmission mode.
  • the transmitter 1320 is configured to send downlink control information.
  • the base station provided by the embodiment of the present invention generates and transmits the transmission scheme indication information to the UE, where the transmission scheme indication information is used to indicate one of the at least two transmission schemes included in the current transmission mode, at least one of the transmission schemes included in the current transmission mode.
  • Both transmission schemes include a beamforming transmit diversity transmission scheme. Since the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme, the UE may use a beamforming transmit diversity transmission scheme to perform data transmission according to the indication of the base station, and solve the related technology. The problem that the UE has low flexibility in transmitting data achieves the effect of improving the flexibility of the UE to transmit data.
  • FIG. 14 is a block diagram of a UE-1400 according to an embodiment of the present invention.
  • the UE-1400 may be the UE-02 in the implementation environment shown in FIG. 1 for performing some of the methods provided by the embodiment shown in FIG. 4-1 and all the methods provided by the embodiment shown in FIG.
  • the UE-1400 can include a receiver 1410 and a processor 1420 coupled to the processor 1420.
  • the receiver 1410 is configured to receive transmission scheme indication information, where the transmission scheme indication information is used to indicate one of the at least two transmission schemes included in the current transmission mode, where the at least two transmission schemes include a beamforming transmit diversity transmission scheme. ;
  • the processor 1420 is configured to perform data transmission according to the transmission scheme indicated by the transmission scheme indication information.
  • the at least two transmission schemes further comprise an open loop space division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a closed loop spatial division multiplexing transmission scheme.
  • the at least two transmission schemes further comprise a multi-user multiple input multiple output transmission scheme.
  • the at least two transmission schemes further comprise an open loop transmit diversity transmission scheme.
  • the receiver 1410 is configured to receive downlink control information, where a format of the downlink control information corresponds to a transmission scheme indicated by the transmission scheme indication information of the at least two transmission schemes included in the current transmission mode.
  • the processor 1420 is further configured to:
  • the UE receives the transmission scheme indication information and performs data transmission according to the transmission scheme indicated by the transmission scheme indication information, where the transmission scheme indication information is used to indicate at least two types included in the current transmission mode.
  • One of the transmission schemes at least two of which include a beamforming transmit diversity transmission scheme. Since the current transmission mode includes at least two transmission schemes, and at least two transmission schemes include a beamforming transmit diversity transmission scheme, the UE may adopt a beamforming transmit diversity transmission scheme for data transmission, and solve the related art UE transmitting data.
  • the problem of lower flexibility has the effect of increasing the flexibility of the UE to transmit data.
  • the data transmission system 1500 can include: a base station 1510 and a UE-1520.
  • the base station 1510 is the base station 1100 shown in FIG. 11; the UE-1520 is the UE-1200 shown in FIG. 12-1 or FIG. 12-2;
  • the base station 1510 is the base station 1300 shown in FIG. 13; the UE-1520 is the UE-1400 shown in FIG. 14.
  • the base station generates and transmits the transmission scheme indication information to the UE, and the UE performs data transmission according to the transmission scheme indicated by the transmission scheme indication information, where the transmission scheme indication information is used to indicate the current One of at least two transmission schemes included in the transmission mode, and at least two transmission schemes include a beamforming transmit diversity transmission scheme.
  • the UE may use a beamforming transmit diversity transmission scheme to perform data transmission according to the indication of the base station, and solve the related technology.
  • the problem that the UE has low flexibility in transmitting data achieves the effect of improving the flexibility of the UE to transmit data.
  • FIG. 16-1 is a block diagram of a transmitting end device 1600 according to an embodiment of the present invention.
  • the transmitting end device 1600 may be the base station 01 in the implementation environment shown in FIG. Some of the methods provided by the embodiments and all of the methods provided by the embodiment shown in FIG. 5 are shown. Referring to FIG. 16-1, the transmitting device 1600 can include:
  • the first pre-encoding module 1610 is configured to pre-code a plurality of initial spatial streams to obtain a plurality of pre-encoded data streams, and at least two initial spatial streams of the plurality of initial spatial streams are transmitted and diversity by using an original spatial stream. Processed
  • the transmitting module 1620 is configured to transmit a plurality of precoded data streams.
  • the transmitting end device obtained by the embodiment of the present invention obtains a plurality of precoded data streams by precoding a plurality of initial spatial streams, and then transmits a plurality of precoded data streams, and at least one of the plurality of initial spatial streams.
  • the two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the transmitting end device can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the transmitting device 1600 further includes:
  • the second pre-coding module 1630 is configured to pre-code the demodulation reference signals of the plurality of initial spatial streams to obtain a plurality of pre-coded demodulation reference signals, and each of the plurality of initial spatial streams corresponds to one demodulation a reference signal, the precoding vector used by each initial spatial stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the sending module 1640 is configured to send multiple precoding demodulation reference signals.
  • the transmitting end device obtained by the embodiment of the present invention obtains a plurality of precoded data streams by precoding a plurality of initial spatial streams, and then transmits a plurality of precoded data streams, and at least one of the plurality of initial spatial streams.
  • the two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the transmitting end device can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • FIG. 17-1 is a block diagram of a receiving end device 1700 according to an embodiment of the present invention.
  • the receiving end device 1700 may be any UE in the implementation environment shown in FIG. Some of the methods provided by the illustrated embodiment and all of the methods provided by the embodiment shown in FIG. Referring to FIG. 17-1, the receiving end device 1700 can include:
  • the first receiving module 1710 is configured to receive a plurality of precoded data streams, where the plurality of precoded data streams are precoded by the plurality of initial spatial streams, and at least two initial spatial streams of the plurality of initial spatial streams are passed Obtaining a raw spatial stream by transmit diversity processing;
  • the first recovery module 1720 is configured to recover at least two initial spatial streams from the plurality of precoded data streams
  • the second recovery module 1730 is configured to recover an original spatial stream according to the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from a plurality of precoded data streams by receiving a plurality of precoded data streams, and recovers according to at least two initial spatial streams.
  • An original spatial stream wherein the plurality of precoded data streams are obtained by precoding a plurality of initial spatial streams, and at least two of the plurality of initial spatial streams are subjected to transmit diversity processing by using a raw spatial stream. owned.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the receiving end device can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the receiving end device 1700 further includes:
  • the second receiving module 1740 is configured to receive multiple precoding demodulation reference signals, where the plurality of precoding demodulation reference signals are precoded by using demodulation reference signals of multiple initial spatial streams, in multiple initial spatial streams.
  • Each initial spatial stream corresponds to a demodulation reference signal, and each preamble stream uses a precoding vector that is the same as a precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the first recovery module 1720 is configured to recover at least two initial spatial streams from the plurality of precoded data streams according to the precoded demodulation reference signals of the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from a plurality of precoded data streams by receiving a plurality of precoded data streams, and recovers according to at least two initial spatial streams.
  • An original spatial stream wherein the plurality of precoded data streams are obtained by precoding a plurality of initial spatial streams, and at least two of the plurality of initial spatial streams are subjected to transmit diversity processing by using a raw spatial stream. owned.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the receiving end device can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • FIG. 18-1 is a block diagram of a transmitting end device 1800 according to an embodiment of the present invention.
  • the transmitting end device 1800 may be any UE in the implementation environment shown in FIG. Some of the methods provided by the illustrated embodiment and all of the methods provided by the embodiment shown in FIG. Referring to FIG. 18-1, the transmitting device 1800 can include:
  • a first precoding module 1810 configured to precode at least two initial spatial streams to obtain a plurality of precoded data streams, where at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream;
  • the transmitting module 1820 is configured to transmit a plurality of precoded data streams.
  • the transmitting end device provided by the embodiment of the present invention obtains a plurality of precoded data streams by precoding at least two initial spatial streams, and then transmits a plurality of precoded data streams, and at least two initial spatial streams are Obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams are obtained by performing transmit diversity processing on an original spatial stream. Therefore, the transmitting end device provided by the embodiment of the present invention can enable the receiving end device to perform transmit diversity and space division multiplexing simultaneously with the same time-frequency resource. Increase the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the transmitting device 1800 further includes:
  • the second precoding module 1830 is configured to precode the demodulation reference signals of the at least two initial spatial streams to obtain a plurality of precoding demodulation reference signals, where each initial spatial stream of the at least two initial spatial streams corresponds to one Demodulating the reference signal, the precoding vector used by each initial spatial stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the sending module 1840 is configured to send multiple precoding demodulation reference signals.
  • the transmitting end device provided by the embodiment of the present invention obtains a plurality of precoded data streams by precoding at least two initial spatial streams, and then transmits a plurality of precoded data streams, and at least two initial spatial streams are Through the original
  • the initial spatial stream is obtained by transmit diversity processing.
  • the at least two initial spatial streams are obtained by performing transmit diversity processing on an original spatial stream. Therefore, the transmitting end device provided by the embodiment of the present invention can enable the receiving end device to perform transmit diversity and space division multiplexing simultaneously with the same time-frequency resource. Increase the utilization of time-frequency resources.
  • FIG. 19-1 is a block diagram of a receiving end device 1900 according to an embodiment of the present invention.
  • the receiving end device 1900 may be a base station 01 in the implementation environment shown in FIG. Some of the methods provided by the embodiments and all of the methods provided by the embodiment shown in FIG. 9 are shown. Referring to FIG. 19-1, the receiving device 1900 can include:
  • the first receiving module 1910 is configured to receive multiple precoded data streams, where the plurality of precoded data streams are precoded by at least two initial spatial streams, and at least two initial spatial streams are obtained by performing an original spatial stream. Received by diversity processing;
  • a first recovery module 1920 configured to recover at least two initial spatial streams from the plurality of precoded data streams
  • the second recovery module 1930 is configured to recover an original spatial stream according to the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from a plurality of precoded data streams by receiving a plurality of precoded data streams, and recovers according to at least two initial spatial streams.
  • An original spatial stream wherein a plurality of precoded data streams are obtained by precoding at least two initial spatial streams, and at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream. Therefore, the receiving end device provided by the embodiment of the present invention can simultaneously transmit and diversity the same time-frequency resource. Space division multiplexing improves the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the receiving device 1900 further includes:
  • the second receiving module 1940 is configured to receive multiple precoding demodulation reference signals, where the plurality of precoding demodulation reference signals are precoded by demodulating reference signals of at least two initial spatial streams, at least two initial spaces.
  • Each initial spatial stream in the stream corresponds to a demodulation reference signal, and each preamble stream uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the first recovery module 1920 is configured to recover at least two initial spatial streams from the plurality of precoded data streams according to the precoded demodulation reference signals of the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from a plurality of precoded data streams by receiving a plurality of precoded data streams, and recovers according to at least two initial spatial streams.
  • An original spatial stream wherein a plurality of precoded data streams are obtained by precoding at least two initial spatial streams, and at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream. Therefore, the receiving end device provided by the embodiment of the present invention can simultaneously transmit and diversity the same time-frequency resource. Space division multiplexing improves the utilization of time-frequency resources.
  • FIG. 20 is a block diagram of a transmitting end device 2000 according to an embodiment of the present invention.
  • the transmitting end device 2000 may be a base station 01 in the implementation environment shown in FIG. 1 for performing the implementation shown in FIG. Some of the methods provided by the example and All of the methods provided by the embodiment shown in Figure 5.
  • the transmitting device 2000 may include a processor 2010 and a transmitter 2020, and the processor 2010 is coupled to the transmitter 2020.
  • the processor 2010 is configured to pre-code a plurality of initial spatial streams to obtain a plurality of pre-coded data streams, where at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing transmit diversity processing on an original spatial stream. ;
  • the transmitter 2020 is configured to transmit a plurality of precoded data streams.
  • the transmitting end device obtained by the embodiment of the present invention obtains a plurality of precoded data streams by precoding a plurality of initial spatial streams, and then transmits a plurality of precoded data streams, and at least one of the plurality of initial spatial streams.
  • the two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the transmitting end device can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the processor 2010 is further configured to perform precoding on the demodulation reference signals of the multiple initial spatial streams to obtain multiple precoding demodulation reference signals, where each initial spatial stream in the multiple initial spatial streams corresponds to one Demodulating the reference signal, the precoding vector used by each initial spatial stream is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the transmitter 2020 is further configured to send a plurality of precoding demodulation reference signals.
  • the transmitting end device obtained by the embodiment of the present invention obtains a plurality of precoded data streams by precoding a plurality of initial spatial streams, and then transmits a plurality of precoded data streams, and at least one of the plurality of initial spatial streams.
  • the two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the transmitting end device can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • FIG. 21 is a block diagram of a receiving end device 2100 according to an embodiment of the present invention.
  • the receiving end device 2100 may be any UE in the implementation environment shown in FIG. Some of the methods provided by the embodiments and all of the methods provided by the embodiment shown in FIG. Referring to FIG. 21, the receiving device 2100 may include a receiver 2110 and a processor 2120, and the receiver 2110 is coupled to the processor 2120.
  • the receiver 2110 is configured to receive a plurality of precoded data streams, where the plurality of precoded data streams are precoded by the plurality of initial spatial streams, and at least two initial spatial streams of the plurality of initial spatial streams are through one
  • the original spatial stream is obtained by transmitting diversity processing
  • the processor 2120 is configured to recover at least two initial spatial streams from the plurality of precoded data streams
  • the processor 2120 is configured to recover an original spatial stream according to the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from a plurality of precoded data streams by receiving a plurality of precoded data streams, and recovers according to at least two initial spatial streams.
  • An original spatial stream wherein the plurality of precoded data streams are obtained by precoding a plurality of initial spatial streams, and at least two of the plurality of initial spatial streams are subjected to transmit diversity processing by using a raw spatial stream. owned.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the receiving end device can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first receiving end device.
  • At least one of the plurality of initial spatial streams corresponds to the second receiving end device.
  • At least two of the plurality of initial spatial streams are obtained by performing transmit diversity processing on another original spatial stream, and the other original spatial stream corresponds to the third receiving end device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the receiver 2110 is further configured to receive multiple precoding demodulation reference signals, where the plurality of precoding demodulation reference signals are precoded by using demodulation reference signals of multiple initial spatial streams, and multiple initial Each initial spatial stream in the spatial stream corresponds to a demodulation reference signal, and each preamble stream uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the processor 2120 is further configured to recover at least two initial spatial streams from the plurality of precoded data streams according to the precoded demodulation reference signals of the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from a plurality of precoded data streams by receiving a plurality of precoded data streams, and recovers according to at least two initial spatial streams.
  • An original spatial stream wherein the plurality of precoded data streams are obtained by precoding a plurality of initial spatial streams, and at least two of the plurality of initial spatial streams are subjected to transmit diversity processing by using a raw spatial stream. owned.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing a transmit diversity process on the original spatial stream, and the other initial spatial streams may be obtained by the non-transmission diversity process.
  • the receiving end device can simultaneously perform transmit diversity and space division multiplexing on the same time-frequency resource, thereby improving the utilization of time-frequency resources.
  • FIG. 22 it is a block diagram of a transmitting end device 2200 according to an embodiment of the present invention.
  • the transmitting end device 2200 may be any UE in the implementation environment shown in FIG. Some of the methods provided by the embodiments and all of the methods provided by the embodiment shown in FIG. Referring to FIG. 22, the transmitting device 2200 can include a processor 2210 and a transmitter 2220, and the processor 2210 is coupled to the transmitter 2220.
  • the processor 2210 is configured to pre-code at least two initial spatial streams to obtain a plurality of pre-coded data streams, where at least two initial spatial streams are obtained by performing transmit diversity processing on an original spatial stream.
  • the transmitter 2220 is configured to transmit a plurality of precoded data streams.
  • the transmitting end device provided by the embodiment of the present invention obtains a plurality of precoded data streams by precoding at least two initial spatial streams, and then transmits a plurality of precoded data streams, and at least two initial spatial streams are Through the original
  • the initial spatial stream is obtained by transmit diversity processing.
  • the at least two initial spatial streams are obtained by performing transmit diversity processing on an original spatial stream. Therefore, the transmitting end device provided by the embodiment of the present invention can enable the receiving end device to perform transmit diversity and space division multiplexing simultaneously with the same time-frequency resource. Increase the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different precoding vectors correspond to different DMRS ports.
  • the processor 2210 is configured to perform precoding on the demodulation reference signals of the at least two initial spatial streams to obtain multiple precoding demodulation reference signals, and each initial spatial stream in the at least two initial spatial streams.
  • each preamble stream uses a precoding vector identical to the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the transmitter 2220 is configured to send a plurality of precoding demodulation reference signals.
  • the transmitting end device provided by the embodiment of the present invention obtains a plurality of precoded data streams by precoding at least two initial spatial streams, and then transmits a plurality of precoded data streams, and at least two initial spatial streams are Obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams are obtained by performing transmit diversity processing on an original spatial stream. Therefore, the transmitting end device provided by the embodiment of the present invention can enable the receiving end device to perform transmit diversity and space division multiplexing simultaneously with the same time-frequency resource. Increase the utilization of time-frequency resources.
  • FIG. 23 is a block diagram of a receiving end device 2300 according to an embodiment of the present invention.
  • the receiving end device 2300 may be a base station 01 in the implementation environment shown in FIG. 1 for performing the implementation shown in FIG. Some of the methods provided by the examples and all of the methods provided by the embodiment shown in FIG. Referring to FIG. 23, the receiving device 23 may include a receiver 2310 and a processor 2320, and the receiver 2310 is coupled to the processor 2320.
  • the receiver 2310 is configured to receive a plurality of precoded data streams, where the plurality of precoded data streams are precoded by at least two initial spatial streams, and at least two initial spatial streams are transmitted and diversity by using an original spatial stream. Processed
  • the processor 2320 is configured to recover at least two initial spatial streams from the plurality of precoded data streams
  • the processor 2320 is configured to recover an original spatial stream according to the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from a plurality of precoded data streams by receiving a plurality of precoded data streams, and recovers according to at least two initial spatial streams.
  • An original spatial stream wherein a plurality of precoded data streams are obtained by precoding at least two initial spatial streams, and at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream. Therefore, the receiving end device provided by the embodiment of the present invention can simultaneously transmit and diversity the same time-frequency resource. Space division multiplexing improves the utilization of time-frequency resources.
  • an original spatial stream corresponds to the first transmitting device.
  • the transmit diversity process is space-time transmit diversity processing, space-frequency transmit diversity processing, or space-time-frequency transmit diversity processing.
  • different initial spatial streams in the at least two initial spatial streams correspond to different precoding vectors, and each precoding vector corresponds to one demodulation reference signal DMRS port, and different DMRS ports corresponding to different precoding vectors are different.
  • the receiver 2310 is further configured to receive multiple precoding demodulation reference signals, where the plurality of precoding demodulation reference signals are precoded by demodulating reference signals of at least two initial spatial streams, at least two Each of the initial spatial streams corresponds to a demodulation reference signal, and each of the initial spatial streams uses a precoding vector that is the same as the precoding vector used by the demodulation reference signal of each initial spatial stream;
  • the processor 2320 is further configured to recover at least two initial spatial streams from the plurality of precoded data streams according to the precoded demodulation reference signals of the at least two initial spatial streams.
  • the receiving end device recovers at least two initial spatial streams from a plurality of precoded data streams by receiving a plurality of precoded data streams, and recovers according to at least two initial spatial streams.
  • An original spatial stream wherein a plurality of precoded data streams are obtained by precoding at least two initial spatial streams, and at least two initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream.
  • the at least two initial spatial streams of the plurality of initial spatial streams are obtained by performing transmit diversity processing on a raw spatial stream. Therefore, the receiving end device provided by the embodiment of the present invention can simultaneously transmit and diversity the same time-frequency resource. Space division multiplexing improves the utilization of time-frequency resources.
  • the term “and/or” is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B, there are three cases of B alone.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请公开一种传输方案指示方法、数据传输方法、装置及系统，属于通信技术领域。该传输方案指示方法包括：生成传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案；发送传输方案指示信息。本申请解决了UE传输数据的灵活性较低的问题；达到了提高UE传输数据的灵活性的效果。本申请用于数据传输。

Description

传输方案指示方法、数据传输方法、装置及系统
本申请要求于2016年8月10日提交中国专利局、申请号为201610652382.5、发明名称为“传输方案指示方法、数据传输方法、装置及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，特别涉及一种传输方案指示方法、数据传输方法、装置及系统。
背景技术
在长期演进(英文：Long Term Evolution；简称：LTE)或者后续长期演进(英文：Long term evolution-advanced；简称：LTE-A)系统中，存在多种传输模式(英文：Transmission mode；简称：TM)，比如TM1～TM10，基站可以通过无线资源控制(Radio Resource Control；简称：RRC)信令指示UE采用相应的TM进行数据传输，该多种TM中的每种TM包含两种传输方案，基站可以根据信道质量向用户设备(英文：User equipment；简称：UE)下发传输方案指示信息，该传输方案指示信息可以指示UE当前所采用的TM中的一种传输方案，UE可以根据传输方案指示信息采用相应的传输方案进行数据传输。其中，信道质量可以采用信道状态信息(英文：Channel state information；简称：CSI)来表征。
相关技术中，TM3至TM10中的每种TM包含非发射分集的多输入多输出(英文：Multiple-input andmultiple-output；简称：MIMO)传输方案和非波束赋形发射分集(英文：Non-beamforming transmit diversity；简称：NBTD)传输方案两种传输方案，比如，TM5包括多用户MIMO传输方案和发射分集传输方案传输方案，其中，非发射分集的MIMO传输方案可以使不同的UE进行时频资源的空分复用，也可以使同一UE同时传输多个空间流(或者说是符号层，空间层)，提高频谱效率，适用于信道质量较好的场景，NBTD传输方案可以有效对抗信道衰落，提高接收端的信噪比，保证UE传输数据的可靠性，适用于信道质量较差的场景。UE可以向基站上报CSI，基站根据UE上报的CSI，通过下行控制信息(英文：Downlink control information；简称：DCI)指示UE采用相应的传输方案进行数据传输。
在实现本申请的过程中，发明人发现相关技术至少存在以下问题：
相关技术中的TM包含非发射分集的MIMO传输方案和NBTD传输方案，UE只能根据基站的指示采用非发射分集的MIMO传输方案或NBTD传输方案进行数据传输，因此，UE传输数据的灵活性较低。
发明内容
为了解决UE传输数据的灵活性较低的问题，本发明实施例提供了一种传输方案指示方法、数据传输方法、装置及系统。所述技术方案如下：
第一方面，提供了一种传输方案指示方法，该方法包括：
生成传输方案指示信息，该传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，该至少两种传输方案包含波束赋形发射分集传输方案；
发送该传输方案指示信息。
本发明实施例用于由基站和UE组成的系统，UE可以具有多种传输模式，每种传输模式可以包含至少两种传输方案，UE可以采用任意一种传输模式中的任意一种传输方案进行数据传输。当前传输模式指的是UE当前进行数据传输所采用的传输模式，当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案。
基站可以生成传输方案指示信息并向UE发送传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，示例地，传输方案指示信息用于指示当前传输模式中的波束赋形发射分集传输方案。在本发明实施例中，UE可以向基站上报CSI，基站可以根据UE上报的CSI生成传输方案指示信息，具体地，基站可以根据UE上报的CSI确定信道质量，然后根据信道质量生成传输方案指示信息，其中，UE可以在CSI发生变化时向基站上报CSI，还可以定时向基站上报CSI，也可以每隔预设时间间隔向基站上报CSI，UE向基站上报CSI的具体实现方式可以参考LTE，本发明实施例在此不再赘述。
可选地，该至少两种传输方案还包含开环空分复用传输方案。
可选地，该至少两种传输方案还包含闭环空分复用传输方案。
可选地，该至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，该至少两种传输方案还包含开环发射分集传输方案。
其中，波束赋形发射分集传输方案和开环发射分集传输方案可以为相互独立的两个传输方案，也可以为一个统一传输方案，该统一传输方案可以为统一发射分集(英文：Unified transmit diversity；简称：UTD)传输方案，该UTD传输方案中包含波束赋形发射分集传输方案和开环发射分集传输方案两个子方案，本发明实施例对此不作限定。
可选地，生成传输方案指示信息，包括：生成下行控制信息，该下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由传输方案指示信息所指示的传输方案相对应；
发送传输方案指示信息，包括：发送该下行控制信息。
在本发明实施例中，传输方案指示信息可以为基站向UE发送的下行控制信息的格式，当前传输模式中的至少两种传输方案中的每种传输方案可以对应一种下行控制信息的格式，因此，基站生成传输方案指示信息具体可以为基站生成下行控制信息，示例地，该下行控制信息可以为LTE中的DCI。基站可以生成格式为格式1A的下行控制信息，该格式1A可以指示当前传输模式中的波束赋形发射分集传输方案。
基站生成该格式为格式1A的下行控制信息后，可以向UE发送该下行控制信息。由于传输方案指示信息可以为下行控制信息的格式，因此，基站向UE发送传输方案指示信息具体可以为基站向UE发送下行控制信息，该下行控制信息可以为LTE中的DCI，基站可以通过物理下行控制信道(英文：Physical downlink control channel；简称：PDCCH)中的第一时频资源向UE发送下行控制信息，该第一时频资源可以为UE搜索空间中的时频资源，通过UE搜索空间中的时频资源向UE发送的下行控制信息通常采用UE的无线网络临时标识(英文：Radio Network Temporary Identity；简称：RNTI)加扰。示例地，基站通过第一时频资源向UE发送格式为格式1A的下行控制信息，该格式为格式1A的下行控制信息采用UE的RNTI加扰。
第二方面，提供一种数据传输方法，该方法包括：
接收传输方案指示信息，该传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，该至少两种传输方案包含波束赋形发射分集传输方案；
依据传输方案指示信息所指示的传输方案进行数据传输。
UE可以接收基站发送的传输方案指示信息，然后依据传输方案指示信息所指示的传输方案进行数据传输。示例地，传输方案指示信息指示的传输方案可以为当前传输模式中的波束赋形发射分集传输方案，因此，UE可以依据波束赋形发射分集传输方案进行数据传输。
可选地，该至少两种传输方案还包含开环空分复用传输方案。
可选地，该至少两种传输方案还包含闭环空分复用传输方案。
可选地，该至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，该至少两种传输方案还包含开环发射分集传输方案。
其中，波束赋形发射分集传输方案和开环发射分集传输方案可以为相互独立的两个传输方案，也可以为一个统一传输方案，该统一传输方案可以为UTD传输方案，该UTD传输方案中包含波束赋形发射分集传输方案和开环发射分集传输方案两个子方案，本发明实施例对此不作限定。
可选地，接收传输方案指示信息，包括：接收下行控制信息，该下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由传输方案指示信息所指示的传输方案相对应；
在依据传输方案指示信息所指示的传输方案进行数据传输之前，该方法还包括：
在当前传输模式所包含的至少两种传输方案中确定与下行控制信息的格式对应的传输方案；
将与下行控制信息的格式对应的传输方案，确定为传输方案指示信息所指示的传输方案。
在本发明实施例中，传输方案指示信息可以为下行控制信息的格式，因此，UE可以接收基站发送的下行控制信息，该下行控制信息可以为LTE中的DCI。示例地，UE接收基站发送的格式为格式1A的下行控制信息。其中，UE可以根据自身的RNTI对PDCCH中的UE搜索空间进行盲检测，来实现对传输方案指示信息的接收，具体地，UE根据自身的RNTI依次尝试采用多种下行控制信息的格式对位于UE搜索空间进行解析，然后进行校验，若校验成功，则盲检测成功，UE便可以确定下行控制信息的格式，其中，UE通过盲检测的方式确定与自身相关的下行控制信息以及下行控制信息的格式的具体实现过程在相关技术中已清楚描述，因此，其具体实现过程可以参考相关技术，本发明实施例在此不再赘述。
UE接收到基站发送的下行控制信息后，可以依据基站发送的传输方案指示信息所指示的传输方案进行数据传输，在本发明实施例中，传输方案指示信息可以为下行控制信息的格式，而UE是通过盲检测的方式对下行控制信息进行接收的，因此，当UE接收到下行控制信息后，就可以得到该下行控制信息的格式，然后在当前传输模式所包含的至少两种传输方案中确定与该下行控制信息的格式对应的传输方案，将与下行控制信息的格式对应的传输方案，确定为传输方案指示信息所指示的传输方案，之后，UE可以依据传输方案指示信息所指示的传输方案进行数据传输。
示例地，UE在UE搜索空间中盲检测到格式为格式1A的下行控制信息后，就可以得 到该下行控制信息的格式，该下行控制信息的格式为格式1A，然后UE在当前传输模式所包含的至少两种传输方案中确定与格式1A对应的传输方案，该与格式1A对应的传输方案可以为波束赋形发射分集传输方案，因此，UE将波束赋形发射分集传输方案确定为传输方案指示信息所指示的传输方案，并依据波束赋形发射分集传输方案进行数据传输。
第三方面，提供一种基站，该基站包括：
生成模块，用于生成传输方案指示信息，该传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，该至少两种传输方案包含波束赋形发射分集传输方案；
发送模块，用于发送该传输方案指示信息。
可选地，该至少两种传输方案还包含开环空分复用传输方案。
可选地，该至少两种传输方案还包含闭环空分复用传输方案。
可选地，该至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，该至少两种传输方案还包含开环发射分集传输方案。
可选地，生成模块，用于生成下行控制信息，该下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由该传输方案指示信息所指示的传输方案相对应；
发送模块，用于发送该下行控制信息。
第四方面，提供一种用户设备UE，该UE包括：
接收模块，用于接收传输方案指示信息，该传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，该至少两种传输方案包含波束赋形发射分集传输方案；
传输模块，用于依据该传输方案指示信息所指示的传输方案进行数据传输。
可选地，该至少两种传输方案还包含开环空分复用传输方案。
可选地，该至少两种传输方案还包含闭环空分复用传输方案。
可选地，该至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，该至少两种传输方案还包含开环发射分集传输方案。
可选地，接收模块，用于接收下行控制信息，该下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由该传输方案指示信息所指示的传输方案相对应；
该UE还包括：第一确定模块，用于在当前传输模式所包含的至少两种传输方案中确定与下行控制信息的格式对应的传输方案；
第二确定模块，用于将与下行控制信息的格式对应的传输方案，确定为传输方案指示信息所指示的传输方案。
第五方面，提供一种基站，该基站包括：处理器和发射机，该处理器与该发射机耦合，
处理器，用于生成传输方案指示信息，该传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，该至少两种传输方案包含波束赋形发射分集传输方案；
发射机，用于发送该传输方案指示信息。
可选地，该至少两种传输方案还包含开环空分复用传输方案。
可选地，该至少两种传输方案还包含闭环空分复用传输方案。
可选地，该至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，该至少两种传输方案还包含开环发射分集传输方案。
可选地，处理器，用于生成下行控制信息，该下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由该传输方案指示信息所指示的传输方案相对应；
发射机，用于发送该下行控制信息。
第六方面，提供一种用户设备UE，该UE包括：接收机和处理器，该接收机与该处理器耦合，
接收机，用于接收传输方案指示信息，该传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，该至少两种传输方案包含波束赋形发射分集传输方案；
处理器，用于依据该传输方案指示信息所指示的传输方案进行数据传输。
可选地，该至少两种传输方案还包含开环空分复用传输方案。
可选地，该至少两种传输方案还包含闭环空分复用传输方案。
可选地，该至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，该至少两种传输方案还包含开环发射分集传输方案。
可选地，接收机，用于接收下行控制信息，该下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由该传输方案指示信息所指示的传输方案相对应；
处理器，还用于：在当前传输模式所包含的至少两种传输方案中确定与下行控制信息的格式对应的传输方案；将与下行控制信息的格式对应的传输方案，确定为传输方案指示信息所指示的传输方案。
第七方面，提供一种数据传输系统，该数据传输系统包括：基站和用户设备UE；
该基站如第三方面或第五方面所述的基站；该UE如第四方面或第六方面的UE。
第八方面，提供一种数据发送方法，该方法包括：
对多个初始空间流进行预编码，得到多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射多个预编码数据流。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，该方法还包括：
对多个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发送多个预编码解调参考信号。
第九方面，提供一种数据接收方法，该方法包括：
接收多个预编码数据流，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
从多个预编码数据流中恢复出至少两个初始空间流；
根据至少两个初始空间流恢复出一原始空间流。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，该方法还包括：接收多个预编码解调参考信号，多个预编码解调参考信号是对多个初始空间流的解调参考信号进行预编码得到的，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
从多个预编码数据流中恢复出至少两个初始空间流，包括：根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
第十方面，提供一种数据发送方法，该方法包括：
对至少两个初始空间流进行预编码，得到多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射多个预编码数据流。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，该方法还包括：
对至少两个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发送多个预编码解调参考信号。
第十一方面，提供一种数据接收方法，该方法包括：
接收多个预编码数据流，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
从多个预编码数据流中恢复出至少两个初始空间流；
根据至少两个初始空间流恢复出一原始空间流。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，该方法还包括：接收多个预编码解调参考信号，多个预编码解调参考信号是对至少两个初始空间流的解调参考信号进行预编码得到的，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
从多个预编码数据流中恢复出至少两个初始空间流，包括：根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
第十二方面，提供一种发射端设备，该发射端设备包括：
第一预编码模块，用于对多个初始空间流进行预编码，得到多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射模块，用于发射多个预编码数据流。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，该发射端设备还包括：
第二预编码模块，用于对多个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发送模块，用于发送多个预编码解调参考信号。
第十三方面，提供一种接收端设备，该接收端设备包括：
第一接收模块，用于接收多个预编码数据流，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
第一恢复模块，用于从多个预编码数据流中恢复出至少两个初始空间流；
第二恢复模块，用于根据至少两个初始空间流恢复出一原始空间流。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，该接收端设备还包括：
第二接收模块，用于接收多个预编码解调参考信号，多个预编码解调参考信号是对多个初始空间流的解调参考信号进行预编码得到的，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
第一恢复模块，用于根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
第十四方面，提供一种发射端设备，该发射端设备包括：
第一预编码模块，用于对至少两个初始空间流进行预编码，得到多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射模块，用于发射多个预编码数据流。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，该发射端设备还包括：
第二预编码模块，用于对至少两个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发送模块，用于发送多个预编码解调参考信号。
第十五方面，提供一种接收端设备，该接收端设备包括：
第一接收模块，用于接收多个预编码数据流，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
第一恢复模块，用于从多个预编码数据流中恢复出至少两个初始空间流；
第二恢复模块，用于根据至少两个初始空间流恢复出一原始空间流。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，该接收端设备还包括：
第二接收模块，用于接收多个预编码解调参考信号，多个预编码解调参考信号是对至少两个初始空间流的解调参考信号进行预编码得到的，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解 调参考信号使用的预编码向量相同；
第一恢复模块，用于根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
第十六方面，提供一种发射端设备，该发射端设备包括：处理器和发射机，处理器与发射机耦合，
处理器，用于对多个初始空间流进行预编码，得到多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射机，用于发射多个预编码数据流。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，处理器，还用于对多个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发射机，还用于发送多个预编码解调参考信号。
第十七方面，提供一种接收端设备，该接收端设备包括：接收机和处理器，接收机与处理器耦合，
接收机，用于接收多个预编码数据流，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
处理器，用于从多个预编码数据流中恢复出至少两个初始空间流；
处理器，用于根据至少两个初始空间流恢复出一原始空间流。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，接收机，还用于接收多个预编码解调参考信号，多个预编码解调参考信号是对多个初始空间流的解调参考信号进行预编码得到的，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
处理器，还用于根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
第十八方面，提供一种发射端设备，该发射端设备包括：处理器和发射机，处理器与发射机耦合，
处理器，用于对至少两个初始空间流进行预编码，得到多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射机，用于发射多个预编码数据流。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，该处理器，用于对至少两个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发射机，用于发送多个预编码解调参考信号。
第十九方面，提供一种接收端设备，该接收端设备包括：接收机和处理器，接收机与处理器耦合，
接收机，用于接收多个预编码数据流，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
处理器，用于从多个预编码数据流中恢复出至少两个初始空间流；
处理器，用于根据至少两个初始空间流恢复出一原始空间流。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，接收机，还用于接收多个预编码解调参考信号，多个预编码解调参考信号是对至少两个初始空间流的解调参考信号进行预编码得到的，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
处理器，还用于根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
本发明实施例提供的技术方案带来的有益效果是：
本发明实施例提供的传输方案指示方法、数据传输方法、装置及系统，基站通过生成传输方案指示信息并向UE发送传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案，UE根据传输方案指示信息所指示的传输方案进行数据传输。由于当前传输模式 包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以根据基站的指示采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
附图说明
图1是本申请各个实施例所涉及的一种实施环境的示意图；
图2是本发明实施例提供的一种传输方案指示方法的方法流程图；
图3是本发明实施例提供的一种数据传输方法的方法流程图；
图4-1是本发明实施例提供的另一种数据传输方法的方法流程图；
图4-2是相关技术中提供的UE依据同一传输模式下的两种传输方案进行数据传输的示意图；
图4-3是本发明实施例提供的一种UE依据当前传输模式中的至少两种传输方案进行数据传输的示意图；
图4-4是本发明实施例提供的另一种UE依据当前传输模式中的至少两种传输方案进行数据传输的示意图；
图5是本发明实施例提供的一种数据发送方法的方法流程图；
图6是本发明实施例提供的一种数据接收方法的方法流程图；
图7是本发明实施例提供的另一种数据传输方法的方法流程图；
图8是本发明实施例提供的另一种数据发送方法的方法流程图；
图9是本发明实施例提供的另一种数据接收方法的方法流程图；
图10是本发明实施例提供的再一种数据传输方法的方法流程图；
图11是本发明实施例提供的一种基站的框图；
图12-1是本发明实施例提供的一种UE的框图；
图12-2是本发明实施例提供的另一种UE的框图；
图13是本发明实施例提供的另一种基站的框图；
图14是本发明实施例提供的另一种UE的框图；
图15是本发明实施例提供的一种数据传输系统的结构示意图；
图16-1是本发明实施例提供的一种发射端设备的框图；
图16-2是本发明实施例提供的另一种发射端设备的框图；
图17-1是本发明实施例提供的一种接收端设备的框图；
图17-2是本发明实施例提供的另一种接收端设备的框图；
图18-1是本发明实施例提供的一种发射端设备的框图；
图18-2是本发明实施例提供的另一种发射端设备的框图；
图19-1是本发明实施例提供的一种接收端设备的框图；
图19-2是本发明实施例提供的另一种接收端设备的框图；
图20是本发明实施例提供的一种发射端设备的框图；
图21是本发明实施例提供的一种接收端设备的框图
图22是本发明实施例提供的一种发射端设备的框图；
图23是本发明实施例提供的一种接收端设备的框图。
具体实施方式
请参考图1，其示出了本申请各个实施例所涉及一种实施环境的示意图，该实施环境提供一种无线通信系统，具体可以为MIMO系统，参见图1，该实施环境可以包括：基站01和多个UE。示例地，如图1所示，本实施环境以多个UE包括UE-02、UE-03和UE-04为例进行说明。
多个UE中的每个UE具有多种TM(比如TM1～TM10)，每种TM可以包含至少两种传输方案，每个UE可以采用任意一种TM中的任意一种传输方案进行数据传输。以UE-02为例进行说明，其他UE的实现过程可以参考UE-02，具体地：
UE-02可以具有多种TM(比如TM1～TM10)，每种TM可以包含至少两种传输方案，UE-02可以采用任意一种TM中的任意一种传输方案进行数据传输。
UE-02可以向基站01上报CSI，基站01可以根据UE-02上报的CSI生成传输方案指示信息，然后向UE-02发送传输方案指示信息，传输方案指示信息可以指示UE-02的当前传输模式中的一种传输方案，UE-02可以根据基站01下发的传输方案指示信息，采用当前传输模式中的由传输方案指示信息所指示的传输方案进行数据传输。
在本实施环境中，传输方案指示信息可以携带在下行控制信息中，其具体可以通过下行控制信息的格式来指示，下行控制信息的格式可以与当前传输模式所包含的至少两种传输方案中由传输方案指示信息所指示的传输方案相对应，因此，基站01可以生成下行控制信息，然后向UE-02发送下行控制信息，UE-02可以在当前传输模式所包含的至少两种传输方案中确定与下行控制信息的格式对应的传输方案，并将下行控制信息的格式对应的传输方案确定为传输方案指示信息所指示的传输方案，然后采用当前传输模式中的由传输方案指示信息所指示的传输方案进行数据传输。
在本实施环境中，UE-02的当前传输模式中包含至少两种传输方案，该至少两种传输方案包含波束赋形发射分集传输方案，且该至少两种传输方案还可以包含开环空分复用传输方案，或者，该至少两种传输方案还可以包含闭环空分复用传输方案，或者，该至少两种传输方案还可以包含多用户多输入多输出传输方案，或者，该至少两种传输方案还可以包含开环发射分集传输方案，本实施环境对此不作限定。
需要说明的是，相关技术中，UE-02的当前TM中仅包含非发射分集的MIMO传输方案和NBTD传输方案两种传输方案，(比如，在当前TM为TM4时，当前TM中包含发射分集传输方案和闭环空分复用传输方案，在当前TM为TM5时，当前TM中包含发射分集传输方案和多用户MIMO传输方案，该闭环空分复用传输方案和多用户MIMO传输方案都可以称为非发射分集的MIMO传输方案，该NBTD传输方案可以称为发射分集传输方案，例如开环发射分集)，UE-02只能依据基站01的指示采用非发射分集的MIMO传输方案和NBTD传输方案中的一种传输方案进行数据传输，而非发射分集的MIMO传输方案可以使不同的UE进行时频资源的空分复用，提高频谱效率，通常适用于信道质量较好的场景，NBTD传输方案可以有效对抗信道衰落，提高接收端的信噪比，保证UE传输数据的可靠性，通常适用于信道质量较差的场景，若UE-02当前依据非发射分集的MIMO传输方案进行数据传输，当信道质量发生变化时，而基站01可以指示UE-02依据NBTD传输方案进行数据传输，这样一来就会存在以下问题：
首先，UE-02只能依据非发射分集的MIMO传输方案和NBTD传输方案中的一种传输方案进行数据传输，数据传输的灵活性较低；
其次，UE-02在依据非发射分集的MIMO传输方案进行数据传输时，由基站01所服务的小区内的不同UE可以进行时频资源的空分复用，而UE-02在依据NBTD传输方案进行数据传输时，由基站01所服务的小区内的不同UE无法进行时频资源的空分复用，导致时频资源的利用率较低，频谱效率较低；
再次，当信道质量变化较小时，若基站01指示UE-02依据NBTD传输方案进行数据传输，会导致基站01对UE-02的指示较为极端。
请参考图2，其示出了本发明实施例提供的一种传输方案指示方法的方法流程图，该传输方案指示方法可以由图1所示实施环境中的基站01执行，参见图2，该传输方案指示方法可以包括：
步骤201、生成传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。
步骤202、发送传输方案指示信息。
综上所述，本发明实施例提供的传输方案指示方法，基站通过生成并向UE发送传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以根据基站的指示采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
可选地，至少两种传输方案还包含开环空分复用传输方案。
可选地，至少两种传输方案还包含闭环空分复用传输方案。
可选地，至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，至少两种传输方案还包含开环发射分集传输方案。
可选地，步骤201可以包括：生成下行控制信息，下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由传输方案指示信息所指示的传输方案相对应；
步骤202可以包括：发送下行控制信息。
上述所有可选技术方案，可以采用任意结合形成本申请的可选实施例，在此不再一一赘述。
综上所述，本发明实施例提供的传输方案指示方法，基站通过生成并向UE发送传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以根据基站的指示采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
请参考图3，其示出了本发明实施例提供的一种数据传输方法的方法流程图，该数据传输方法可以由图1所示实施环境中的UE-02执行，参见图3，该数据传输方法可以包括：
步骤301、接收传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。
步骤302、依据传输方案指示信息所指示的传输方案进行数据传输。
综上所述，本发明实施例提供的数据传输方法，UE通过接收传输方案指示信息并依据传输方案指示信息所指示的传输方案进行数据传输，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
可选地，至少两种传输方案还包含开环空分复用传输方案。
可选地，至少两种传输方案还包含闭环空分复用传输方案。
可选地，至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，至少两种传输方案还包含开环发射分集传输方案。
可选地，步骤301可以包括：接收下行控制信息，下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由传输方案指示信息所指示的传输方案相对应；
在步骤302之前，该数据传输方法还可以包括：
在当前传输模式所包含的至少两种传输方案中确定与下行控制信息的格式对应的传输方案；
将与下行控制信息的格式对应的传输方案，确定为传输方案指示信息所指示的传输方案。
上述所有可选技术方案，可以采用任意结合形成本申请的可选实施例，在此不再一一赘述。
综上所述，本发明实施例提供的数据传输方法，UE通过接收传输方案指示信息并依据传输方案指示信息所指示的传输方案进行数据传输，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
请参考图4-1，其示出了本发明实施例提供的另一种数据传输方法的方法流程图，本实施例以该数据传输方法应用于图1所示实施环境中来进行举例说明，参见图4-1，该数据传输方法可以包括：
步骤401、基站生成传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。
本发明实施例提供的数据传输方法可以用于由基站和UE组成的系统，其中，UE可以具有多种传输模式，每种传输模式可以包含至少两种传输方案，UE可以采用任意一种传输 模式中的任意一种传输方案进行数据传输。
当前传输模式指的是UE当前进行数据传输所采用的传输模式，在本发明实施例中，当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集(英文：Beamformedtransmit diversity；简称：BTD)传输方案，可选地，至少两种传输方案还可以包含开环空分复用传输方案，或者，至少两种传输方案还可以包含闭环空分复用传输方案，或者，至少两种传输方案还可以包含多用户多输入多输出传输方案，或者，至少两种传输方案还可以包含开环发射分集传输方案，其中，波束赋形发射分集传输方案和开环发射分集传输方案可以为相互独立的两个传输方案，也可以为一个统一传输方案，该统一传输方案可以为UTD传输方案，该UTD传输方案中包含波束赋形发射分集传输方案和开环发射分集传输方案两个子方案。根据上述描述，在本发明实施例中，当前传输模式以及当前传输模式所包含的至少两种传输方案可以为下表1所示的任意一种可能的实现方式：
表1
Figure PCTCN2017089022-appb-000001
Figure PCTCN2017089022-appb-000002
其中，在上述表1中，TM-1可以与LTE中的TM2对应，TM-2至TM-10中的任一TM可以与LTE中的TM中的除TM2之外的任一TM对应，且上述表1中，TM-8、TM-9和TM-10这三种TM与TM-5、TM-6和TM-7这三种TM互斥，也即是，标准中存在TM-5、TM-6和TM-7对应的传输方案或者TM-8、TM-9和TM-10对应的传输方案，示例地，当标准中存在TM-8、TM-9和TM-10对应的传输方案时，就不会存在TM-5、TM-6和TM-7对应的传输方案，当标准中存在TM-5、TM-6和TM-7对应的传输方案时，就不会存在TM-8、TM-9和TM-10对应的传输方案。示例地，TM-2与LTE中的TM3对应，TM-3与LTE中的TM4对应，TM-4与LTE中的TM5对应，TM-5与LTE中的TM6对应，TM-6与LTE中的TM7对应，TM-7与LTE中的TM8对应，或者，TM-2与LTE中的TM3对应，TM-3与LTE中的TM4对应，TM-4与LTE中的TM5对应，TM-8与LTE中的TM6对应，TM-9与LTE中的TM7对应，TM-10与LTE中的TM8对应，本发明实施例对此不作限定。在上述表1中，开环发射分集传输方案为可以为LTE中的开环发射分集(英文：Open loop transmit diversity；简称：OLTD)传输方案，该OLTD传输方案指的是LTE标准中的transmit diversity，开环空分复用传输方案可以为LTE中的开环空分复用(英文：Open-loop spatial multiplexing；简称：OLSM)传输方案，闭环空分复用传输方案可以为LTE中的闭环空分复用(英文：Closed-loop spatial multiplexing；简称：CLSM)传输方案，多用户多输入多输出传输方案可以为LTE中的多用户多输入多输出(英文：Multi-user Multiple-input and multiple-output；简称：MU-MIMO)传输方案。在本发明实施例中，当前传输模式可以为上述TM-1至TM-10中的任意一种传输模式，示例地，当前传输模式为TM-2。
需要说明的是，本发明实施例中，上述TM-1至TM-10中的传输方案仅是示例性的，实际应用中，TM-1至TM-10中的每个TM中均包含波束赋形发射分集传输方案，且每个TM中除该波束赋形发射分集传输方案之外，还可以包括既非波束赋形发射分集传输方案也非开环发射分集传输方案的传输方案，该既非波束赋形发射分集传输方案也非开环发射分集传输方案可以包括但不限于上述开环空分复用传输方案、闭环空分复用传输方案和多用户多输入多输出传输方案，且每个TM中的至少两个传输方案中，除波束赋形发射分集传输方案外，还可以包含上述其他传输方案的任意组合，本发明实施例中的开环空分复用传输方案、闭环空分复用传输方案和多用户多输入多输出传输方案仅仅是示例性的，实际应用中，还可以包含其他的传输方案，本发明实施例对此不做限定。
基站可以生成传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，示例地，传输方案指示信息用于指示表1所示的TM-2中的波束赋形发射分集传输方案。在本发明实施例中，UE可以向基站上报CSI，基站可以根据UE上报的CSI生成传输方案指示信息，具体地，基站可以根据UE上报的CSI确定信道质量，然后根据信道质量生成传输方案指示信息，其中，UE可以在CSI发生变化时向基站上报CSI，还可以定时向基站上报CSI，也可以每隔预设时间间隔向基站上报CSI，UE向基站上报CSI的具体实现方式可以参考LTE，本发明实施例在此不再赘述。
在本发明实施例中，传输方案指示信息可以为基站向UE发送的下行控制信息的格式， 当前传输模式中的至少两种传输方案中的每种传输方案可以对应一种下行控制信息的格式，因此，基站生成传输方案指示信息具体可以为基站生成下行控制信息，示例地，该下行控制信息可以为LTE中的DCI。当前传输模式、当前传输模式所包含的至少两种传输方案以及当前传输模式所包含的至少两种传输方案中的每种传输方案对应的下行控制信息的格式可以如下表2所示：
表2
Figure PCTCN2017089022-appb-000003
Figure PCTCN2017089022-appb-000004
参见上述表2，基站可以生成传输方案指示信息，当传输方案指示信息指示表1所示的TM-2中的波束赋形发射分集传输方案时，该传输方案指示信息可以为格式1A，因此，基站生成传输方案指示信息具体可以为基站生成格式为格式1A的下行控制信息，该格式为格式1A的下行控制信息用于指示TM-2中的波束赋形发射分集传输方案，本发明实施例对此不作限定。
需要说明的是，本发明实施例是以传输方案指示信息为下行控制信息的格式为例进行说明的，实际应用中，传输方案指示信息还可以为下行控制信息的内容，本发明实施例对此不作限定。
步骤402、基站向UE发送传输方案指示信息。
基站生成传输方案指示信息后，可以向UE发送传输方案指示信息。由于传输方案指示信息可以为下行控制信息的格式，因此，基站向UE发送传输方案指示信息具体可以为基站向UE发送下行控制信息，该下行控制信息可以为LTE中的DCI，基站可以通过物理下行控制信道(英文：Physical downlink control channel；简称：PDCCH)中的第一时频资源向UE发送下行控制信息，该第一时频资源可以为UE搜索空间中的时频资源，通过UE搜索空间中的时频资源向UE发送的下行控制信息通常采用UE的无线网络临时标识(英文：Radio Network Temporary Identity；简称：RNTI)加扰。示例地，基站通过第一时频资源向UE发送格式为格式1A的下行控制信息，该格式为格式1A的下行控制信息采用UE的RNTI加扰。
步骤403、UE接收基站发送的传输方案指示信息。
基站向UE发送传输方案指示信息时，UE可以接收基站发送的传输方案指示信息。由于传输方案指示信息可以为下行控制信息的格式，因此，UE接收基站发送的传输方案指示信息具体可以为UE接收基站发送的下行控制信息，该下行控制信息可以为LTE中的DCI。示例地，UE接收基站发送的格式为格式1A的下行控制信息，其中，UE可以根据自身的RNTI对PDCCH中的UE搜索空间进行盲检测，来实现对传输方案指示信息的接收，具体地，UE根据自身的RNTI依次尝试采用多种下行控制信息的格式对位于UE搜索空间进行解析，然后进行校验，若校验成功，则盲检测成功，UE便可以确定下行控制信息的格式，其中，UE通过盲检测的方式确定与自身相关的下行控制信息以及下行控制信息的格式的具体实现过程在相关技术中已清楚描述，因此，其具体实现过程可以参考相关技术，本发明实施例在此不再赘述。
步骤404、UE依据传输方案指示信息所指示的传输方案进行数据传输。
UE接收基站发送的传输方案指示信息后，可以依据基站发送的传输方案指示信息所指示的传输方案进行数据传输。在本发明实施例中，传输方案指示信息可以为下行控制信息的格式，而UE是通过盲检测的方式对下行控制信息进行接收的，因此，当UE接收到下行控制信息后，就可以得到该下行控制信息的格式，然后UE在当前传输模式所包含的至少两种传输方案中确定与该下行控制信息的格式对应的传输方案，将与下行控制信息的格式对应的传输方案，确定为传输方案指示信息所指示的传输方案，之后，UE可以依据传输方案 指示信息所指示的传输方案进行数据传输。
示例地，UE在UE搜索空间中盲检测到格式为格式1A的下行控制信息后，就可以得到该下行控制信息的格式，该下行控制信息的格式为格式1A，然后UE在UE的当前传输模式TM-2所包含的至少两种传输方案中确定与格式1A对应的传输方案，参见表2，在TM-2中，与格式1A对应的传输方案为波束赋形发射分集传输方案，因此，UE将波束赋形发射分集传输方案确定为传输方案指示信息所指示的传输方案，并依据波束赋形发射分集传输方案进行数据传输。
需要说明的是，在本发明实施例中，当波束赋形发射分集传输方案和开环发射分集传输方案为UTD传输方案中的两个子方案时，该两个子方案对于UE来说是透明的，也即是，当波束赋形发射分集传输方案和开环发射分集传输方案为UTD传输方案中的两个子方案时，基站只需要向UE指示统一发射分集方案，而无需向UE指示统一发射分集方案中的子方案。比如，当UE的当前传输模式为TM-8时，基站只需要生成格式为格式2C的下行控制信息即可，UE在接收到该下行控制信息后，就可以在TM-8中确定与格式2C对应的传输方案，参见表2，该与格式2C对应的传输方案为统一发射分集方案，因此，UE可以依据该统一发射分集方案进行数据传输，具体采用统一发射分集方案中的波束赋形发射分集传输方案进行数据传输，还是采用统一发射分集方案中的开环发射分集传输方案进行数据传输，UE可以根据CSI确定，本发明实施例对此不作限定。
需要补充说明的是，本发明实施例提供的数据传输方法步骤的先后顺序可以进行适当调整，步骤也可以根据情况进行相应增减，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本申请的保护范围之内，因此不再赘述。
综上所述，本发明实施例提供的数据传输方法，基站通过生成并向UE发送传输方案指示信息，UE依据传输方案指示信息所指示的传输方案进行数据传输，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以根据基站的指示采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
本发明实施例提供的数据传输方法，当信道质量较好时，基站可以指示UE依据开环空分复用传输方案(或者闭环空分复用传输方案，或者多用户多输入多输出传输方案)进行数据传输，当信道质量变差但变化的幅度较小时，基站可以指示UE依据波束赋形发射分集传输方案进行数据传输，当信道质量继续变差时，基站可以指示UE依据开环发射分集传输方案进行数据传输，也即是，基站可以依据信道质量指示UE在开环空分复用传输方案(或者闭环空分复用传输方案，或者多用户多输入多输出传输方案)、波束赋形发射分集传输方案和开环发射分集传输方案之间进行切换，因此，基站对UE的指示较为灵活，可以解决相关技术中基站对UE的指示较为极端的问题。
在现有的LTE或LTE-A系统中，针对不同的UE信道质量设计了不同的TM，但是为了UE传输的可靠性，LTE或LTE-A为不同的TM设计了相同的传输分集方案，该传输分集方案可以称为回退传输方案(英文：fallback transmission scheme)，该fallback  transmission scheme可以为OLTD传输方案，在信道质量变差时，基站可以使UE无需切换TM就回退到fallback transmission scheme进行数据传输，同时，每个TM还包含一个缺省的传输方案(英文：transmission scheme)，该缺省的传输方案可以为非发射分集的MIMO传输方案，该非发射分集的MIMO传输方案如闭环空分复用传输方案、多用户MIMO传输方案等，在信道质量较好时，基站可以使UE在不切换TM的情况下切换至缺省的传输方案进行数据传输，在现有的LTE或LTE-A系统中，TM2本身就是传输分集方案，不需要额外的fallback transmission scheme。
现有的LTE或LTE-A系统，UE从缺省的传输方案切换至fallback transmission scheme需要完全改变波束形成的方式，且采用fallback transmission scheme传输方案的UE只能独占时频资源，无法与其它UE进行时频资源的空分复用，这对系统的频谱效率的影响较大。本发明实施例提供的数据传输方法，当前传输模式所包含的至少两种传输方案中包含波束赋形发射分集传输方案，UE在依据波束赋形发射分集传输方案进行数据传输时，可以与其他UE进行时频资源的空分复用，因此，本发明实施例提供的数据传输方法的时频资源的利用率较高，频谱效率较高。
以下结合图4-2至图4-4对本发明实施例提供的数据传输方法与相关技术中提供的数据传输方法中，UE依据同一传输模式中的传输方案进行数据传输的区别进行简单说明。其中，图4-2是相关技术中提供的UE依据同一传输模式下的两种传输方案进行数据传输的示意图，图4-3和图4-4是本发明实施例提供的两种UE依据当前传输模式中的至少两种传输方案进行数据传输的示意图。需要说明的是，在图4-2至图4-4中，基站011、基站012和基站013为同一基站，本发明实施例为了描述方便采用不同的标号对不同传输方案下的基站进行标识，UE-02为该基站所服务的UE中的任意一个UE。
参见图4-2，相关技术中，基站011所服务的UE中，UE-02(图4-2中未示出)采用非发射分集的MIMO传输方案进行数据传输时，占用了基站011的波束(英文：beam)b1和波束b2，由基站011所服务的UE中除该UE-02之外的UE进行数据传输占用基站011的波束b3、波束b4、波束b5、波束b6和波束b7，由于UE-02在采用非发射分集的MIMO传输方案进行数据传输时，基站011所服务的不同UE可以共享时频资源，因此，UE-02采用非发射分集的MIMO传输方案进行数据传输时，基站011所服务的不同UE可以进行时频资源的空分复用，时频资源的利用率较高，频谱效率较高。
当信道质量变差时，基站可以指示UE-02依据当前传输模式中的NBTD传输方案进行数据传输，参见图4-2，此时，UE-02独占了基站012的波束b，导致基站012所服务的UE中除该UE-02之外的UE无法使用该波束b，因此，UE-02采用NBTD传输方案进行数据传输时，基站012所服务的不同UE无法进行时频资源的空分复用，时频资源的利用率较低，频谱效率较低。
此外，相关技术中的传输模式仅包括两种传输方案，基站011(或基站012)只能指示UE-02采用该两种传输方案中的一种传输方案进行数据传输，导致基站011(或基站012)对UE指示的灵活性较低。
图4-3以波束赋形发射分集传输方案和开环发射分集传输方案为两个独立的传输方案为例进行说明。参见图4-3，在本发明实施例中，基站011所服务的UE中，UE-02(图4-3 中未示出)采用开环空分复用传输方案、闭环空分复用传输方案和多用户多输入多输出传输方案中的任意一种传输方案进行数据传输时，UE-02占用了基站011的波束b1和波束b2，由基站011所服务的UE中除该UE-02之外的UE进行数据传输占用基站011的波束b3、波束b4、波束b5、波束b6和波束b7，由于UE-02在采用开环空分复用传输方案、闭环空分复用传输方案和多用户多输入多输出传输方案中的任意一种传输方案进行数据传输时，基站011所服务的不同UE可以共享基站011的时频资源，因此，UE-02采用开环空分复用传输方案、闭环空分复用传输方案和多用户多输入多输出传输方案中的任意一种传输方案进行数据传输时，基站011所服务的不同UE可以进行时频资源的空分复用，时频资源的利用率较高，频谱效率较高。
当信道质量变差时，基站可以指示UE-02依据当前传输模式中的波束赋形发射分集传输方案进行数据传输，此时，UE-02占用了基站013的波束b1和波束b2，由基站013所服务的UE中除该UE-02之外的UE进行数据传输占用基站013的波束b3、波束b4、波束b5、波束b6和波束b7，由于UE-02在采用波束赋形发射分集传输方案进行数据传输时，基站013所服务的不同UE可以共享基站013的时频资源，因此，UE-02采用波束赋形发射分集传输方案进行数据传输时，基站013所服务的不同UE可以进行时频资源的空分复用，时频资源的利用率较高，频谱效率较高。
当信道质量继续变差时，基站可以指示UE-02依据当前传输模式中的开环发射分集传输方案进行数据传输，此时，UE-02独占了基站012的波束b，导致基站012所服务的UE中除该UE-02之外的UE无法使用该波束b，因此，UE-02采用开环发射分集传输方案进行数据传输时，基站012所服务的不同UE无法进行时频资源的空分复用，时频资源的利用率较低，频谱效率较低。
图4-4以波束赋形发射分集传输方案与开环发射分集传输方案为统一发射分集方案中的两个子传输方案为例进行说明。参见图4-4，在本发明实施例中，基站011所服务的UE中，UE-02(图4-4中未示出)采用开环空分复用传输方案、闭环空分复用传输方案和多用户多输入多输出传输方案中的任意一种传输方案进行数据传输时，UE-02占用了基站011的波束b1和波束b2，由基站011所服务的UE中除该UE-02之外的UE进行数据传输占用基站011的波束b3、波束b4、波束b5、波束b6和波束b7，由于UE-02在采用开环空分复用传输方案、闭环空分复用传输方案和多用户多输入多输出传输方案中的任意一种传输方案进行数据传输时，基站011所服务的不同UE可以共享基站011的时频资源，因此，UE-02采用开环空分复用传输方案、闭环空分复用传输方案和多用户多输入多输出传输方案中的任意一种传输方案进行数据传输时，基站011所服务的不同UE可以进行时频资源的空分复用，时频资源的利用率较高，频谱效率较高。
当信道质量变差时，基站可以指示UE-02依据当前传输模式中的统一发射分集方案进行数据传输，此时，由于统一发射分集方案中的波束赋形发射分集传输方案和开环发射分集传输方案对UE-02来说是透明的，因此，UE-02可以依据统一发射分集方案中的波束赋形发射分集传输方案进行数据传输，也可以依据统一发射分集方案中的开环发射分集传输方案进行数据传输，当UE-02依据统一发射分集方案中的波束赋形发射分集传输方案进行数据传输时，UE-02占用了基站013的波束b1和波束b2，由基站013所服务的UE中除该UE-02之外的UE采用发射分集传输方案进行数据传输占用基站013的波束b3、波束b4、 波束b5、波束b6和波束b7，由于UE-02在采用统一发射分集方案中的波束赋形发射分集传输方案进行数据传输时，基站013所服务的不同UE可以共享基站013的时频资源，因此，UE-02采用统一发射分集方案中的波束赋形发射分集传输方案进行数据传输时，基站013所服务的不同UE可以进行时频资源的空分复用，时频资源的利用率较高，频谱效率较高。
当信道质量继续变差时，UE-02可以依据统一发射分集方案中的开环发射分集传输方案进行数据传输，此时，UE-02独占了基站012的波束b，导致基站012所服务的UE中除该UE-02之外的UE无法使用该波束b，因此，UE-02依据统一发射分集方案中的开环发射分集传输方案进行数据传输时，基站012所服务的不同UE无法进行时频资源的空分复用，时频资源的利用率较低，频谱效率较低。
在本发明实施例中，虽然当UE-02依据开环发射分集传输方案进行数据传输的时频资源的利用率较低，频谱效率较低，但是本发明实施例提供的波束赋形发射分集传输方案可以为UE的传输方案切换过程提供过渡传输方案，当信道质量变差但变化幅度较小时，基站可以指示UE依据波束赋形发射分集传输方案进行数据传输，而不必依据开环发射分集传输方案，由于UE依据波束赋形发射分集传输方案进行数据传输时，基站所服务的不同UE可以进行时频资源的空分复用，因此，UE传输数据的灵活性较高。
下文将对本发明实施例中的波束赋形发射分集传输方案进行详细描述。本发明实施例以数据发送方法和数据接收方法为例来对波束赋形发射分集传输方案进行详细描述。具体地，本发明实施例还提供了一种数据发送方法和一种数据接收方法，该数据发送方法和数据接收方法同样适用于图1所示实施环境。
请参考图5，其示出了本发明实施例提供的一种数据发送方法的方法流程图，该数据发送方法可以由发射端设备来执行，该发射端设备可以为图1所示实施环境中的基站01，参见图5，该数据发送方法可以包括：
步骤501、对多个初始空间流进行预编码，得到多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。
步骤502、发射多个预编码数据流。
综上所述，本发明实施例提供的数据发送方法，发射端设备通过对多个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的数据发送方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。其中，该至少一个初始空间流可以是经过发射分集处理得到的，也可以是未经过发射分集处理的。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集 处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号(Demodulation Reference Signal，DMRS)端口，不同的预编码向量对应的DMRS端口不同。
可选地，该方法还包括：对多个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发送多个预编码解调参考信号。
上述所有可选技术方案，可以采用任意结合形成本申请的可选实施例，在此不再一一赘述。
综上所述，本发明实施例提供的数据发送方法，发射端设备通过对多个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的数据发送方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图6，其示出了本发明实施例提供的一种数据接收方法的方法流程图，该数据接收方法可以由接收端设备来执行，该接收端设备可以为图1所示实施环境中的任一UE，参见图6，该数据接收方法可以包括：
步骤601、接收多个预编码数据流，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。
步骤602、从多个预编码数据流中恢复出至少两个初始空间流。
步骤603、根据至少两个初始空间流恢复出一原始空间流。
综上所述，本发明实施例提供的数据接收方法，接收端设备通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的数据接收方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编 码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，该方法还包括：接收多个预编码解调参考信号，多个预编码解调参考信号是对多个初始空间流的解调参考信号进行预编码得到的，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
步骤602可以包括：根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
上述所有可选技术方案，可以采用任意结合形成本申请的可选实施例，在此不再一一赘述。
综上所述，本发明实施例提供的数据接收方法，接收端设备通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的数据接收方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
上述图5和图6描述的数据发送方法和数据接收方法、以及下述图7所描述的数据传输方法，图8和图9描述的数据发送方法和数据接收方法，图10描述的数据传输方法都可以命名为波束赋形发射分集传输方案，或者基于波束赋形的发射分集传输方案，下述以具体实施例对该波束赋形发射分集传输方案进行说明。
请参考图7，其示出了本发明实施例提供的另一种数据传输方法的方法流程图，该数据传输方法可以应用于由发射端设备和接收端设备组成的系统中，该发射端设备可以为图1所示实施环境中的基站，该接收端设备可以为图1所示实施环境中的任一UE，该系统可以为图1所示实施环境中的MIMO系统。参见图7，该数据传输方法可以包括：
步骤701、发射端设备对多个初始空间流进行预编码，得到多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。
在本发明实施例中，发射端设备可以为图1所示实施环境中的基站01，原始空间流可以与第一接收端设备相对应，当发射端设备为图1所示实施环境中的基站01时，该第一接收端设备可以为图1所示实施环境中的UE-02。
本发明实施例以LTE系统为例进行说明，在LTE系统中，物理信道的处理过程通常包括加扰、调制映射、层映射、预编码、资源粒映射、正交频分复用(英文：Orthogonal Frequency Division Multiplexing；简称：OFDM)信号生成，物理信道的处理对象通常为码字，码字通常为经过编码处理(至少包括信道编码处理)的比特流，码字经过加扰得到加扰比特流，加扰比特流经过调制映射得到调制符号流，调制符号流经过层映射后，被映射到多个符号层(符号层也称为空间流，空间层)，符号层经过预编码得到多个预编码符号流，预编码符号流经过资源粒(英文：Resource Element；简称：RE)映射，被映射到多个资源粒上，这些资源粒随后经过OFDM信号生成阶段得到OFDM符号流，OFDM符号流随后通过天线端 口进行发射。其中，OFDM信号生成阶段可以采用快速傅里叶逆变换(英文：Inverse Fast Fourier Transform；简称：IFFT)得到OFDM符号流，具体过程可以参考相关技术，本发明实施例在此不再赘述。
在本发明实施例中，原始空间流可以是经过层映射后得到的空间流，该空间流也可以称为数据流、符号流或符号层，本发明实施例在层映射和预编码之间增加了发射分集处理操作，当发射端设备向接收端设备发送数据时，可以对层映射后的部分原始空间流进行发射分集处理，对层映射后的部分原始空间流不进行发射分集处理，因此，该多个初始空间流可以包括经过发射分集处理得到的初始空间流，也可以包括未经过发射分集处理的初始空间流。其中，发射分集处理可以包括但不限于空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
在MU-MIMO传输中，空间流所对应的预编码向量可以被设计成与除该空间流的目标接收端设备之外的其他接收设备的信道相正交，以消除干扰，通过预编码得到的预编码数据流也称为预编码符号流。本申请提到的预编码可以参考相关技术中LTE标准所使用的各种预编码方案，例如基于码本的预编码方案和非基于码本的预编码方案。
如果将对原始空间流进行发射分集处理也视为一种预编码，则本实施例的方法相当于对层映射后的初始空间流进行了两级预编码，可以表示为Y＝F1(F2(S))，其中，F2表示发射分集对应的预编码(即发射分集处理)，F1表示波束赋形预编码(即传统意义上的预编码，可参考LTE标准中定义的预编码)，S表示原始空间流。采用不同的发射分集处理方式进行处理时，最终用于发送预编码数据流的端口数量不同，例如，当发射分集处理方式为SFBC时，端口数量可以为2，当发射分集处理方式为FSTD时，端口数量可以为4。
在本发明实施例中，多个初始空间流中的部分初始空间流可能是经过发射分集处理得到的初始空间流，部分初始空间流可能是未经过发射分集处理的初始空间流，也就是说部分初始空间流经过发射分集处理和预编码处理，部分初始空间流只经过了预编码处理而未进行发射分集处理，在本发明实施例中，对初始空间流同时进行发射分集处理和预编码处理的传输方案可以称为波束赋形发射分集传输方案(英文：Beamformed transmit diversity；简称：BTD)传输方案，本发明实施例中的一原始空间流可以与第一接收端设备相对应，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应，且该多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。可选地，当发射端设备为图1所示实施环境中的基站01时，一原始空间流可以与第一接收端设备相对应，该第一接收端设备可以为图1所示实施环境中的UE-02，该UE-02可以采用BTD传输方案进行数据传输，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应，该第二接收端设备可以为图1所示实施环境中的UE-03，该UE-02可以采用非BTD传输方案进行数据传输，该非BTD传输方案包括但不限于：开环空分复用传输方案、闭环空分复用传输方案、多用户多输入多输出传输方案等，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应，该第三接收端设备可以为图1所示实施环境中的UE-04。
示例地，假设一原始空间流为原始空间流1，另一原始空间流为原始空间流2，原始空间流1经发射分集处理得到初始空间流11、初始空间流12，且原始空间流1中还包括未经发射分集处理的空间流，当原始空间流经过发射分集处理后，该原始空间流中经过发射分集 处理的部分和未经过发射分集处理的部分都可以称为初始空间流，因此，原始空间流1还可以包含未经发射分集处理的初始空间流13，原始空间流2经发射分集处理得到初始空间流21和初始空间流22，则原始空间流1可以与UE-02相对应，初始空间流13可以与UE-03相对应，原始空间流2可以与UE-04相对应。
需要说明的是，本发明实施例提供的数据传输方法可以应用于单用户MIMO(英文：Single-user MIMO；简称：SU-MIMO)场景，也可以应用于多用户MIMO(英文：Multi-user MIMO；简称：MU-MIMO)场景。在SU-MIMO场景下，多个初始空间流中的部分空间流可以是对原始空间流进行发射分集得到的，另外一部分空间流可以是未经发射分集处理的，原始空间流和未经发射分集处理的空间流的数量均可以不止一个，当然，SU-MIMO场景下，多个初始空间流可以全部是经过发射分集处理后得到的，这些初始空间流可以是对一个或者多个原始空间流进行发射分集处理得到的，在该步骤701中，进行预编码的多个初始空间流是对一个或者多个原始空间流进行发射分集得到的，该一个或者多个原始空间流可以对应同一UE。在MU-MIMO场景下，该多个初始空间流与多个接收端设备相对应，在一种可能的实现方式中，该多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，且该原始空间流与第一接收端设备相对应，该多个空间流中的至少一个空间流未经过发射分集处理，且该未经过发射分集处理的初始空间流与第二接收端设备相对应，从而实现将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。假设发射端设备为基站01，第一接收端设备为UE-02，第二接收端设备为UE-03，基站01共有端口x,x+1,…,y，UE-02依据BTD传输方案传输数据，且UE-02使用的端口为端口x+1与x+2，UE-02使用的发射分集处理方式为SFBC，除端口x+1与x+2外的剩余端口分配给UE-03使用，UE-03使用CLSM传输方案传输数据。因此，在MU-MIMO场景下，对于基站同时调度的多个UE，至少一个UE使用BTD传输方案进行数据传输。同时，对于使用BTD传输方案进行数据传输的UE，该UE的原始空间流中还可以包含未经发射分集处理的空间流，因此，对于上述多个UE中的一个或者多个UE而言，其所对应的原始空间流可以包括经过发射分集处理得到的初始空间流、未经发射分集处理得到的初始空间流或者上述两种初始空间流的任意组合，且未经发射分集处理的初始空间流的数量可以不止一个，经过发射分集处理得到的初始空间流所对应的原始空间流可以是一个或者多个。
例如，该多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，该多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，即该多个初始空间流是通过对至少两个不同的原始空间流进行发射分集处理得到的。其中，该一原始空间流与第一接收端设备相对应，该另一原始空间流与第三接收端设备相对应，从而实现将同一时频资源同时用于发射分集和空间复用，提高了时频资源的利用率。假设发射端设备为基站01，第一接收端设备为UE-02，第二接收端设备为UE-03，第三接收端设备为UE-04，基站01共有端口x,x+1,…,y，UE-02和UE-04都采用BTD传输方案进行数据传输，UE-03采用CLSM传输方案传输数据，其中，UE-02使用端口x+1与x+2依据BTD传输方案传输数据，UE-03使用端口x+3,…,y-2依据CLSM传输方案传输数据，UE-04使用端口y-1与y依据BTD传输方案传输数据。此外，UE-02和/或UE-04同时还可以使用一些端口依据CLSM传输方案传输数据，即同一UE对应的初始空间流中，部分初始空间流为经过发射分集处理得到的初始空间流，剩下的初始空间流为未经发射分集处理的初始 空间流(该初始空间流也可以称为原始空间流)。
本发明实施例中，可以通过多个预编码向量对多个初始空间流进行预编码，多个初始空间流中不同的初始空间流对应不同的预编码向量，每个初始空间流与一个解调参考信号(英文：Demodulation reference signal；简称：DMRS)相关联，该DMRS与该初始空间流可以通过相同的预编码向量进行预编码，接收端设备(比如UE)可以借助该DMRS对该初始空间流进行解调，且该DMRS由其DMRS端口标识。
需要说明的是，该步骤701中，发射端设备对原始空间流进行发射分集以及对多个初始空间流进行预编码的具体实现过程在相关技术中均已清楚描述，其实现过程都可以参考相关技术，本发明实施例在此不再赘述。
步骤702、发射端设备向接收端设备发射多个预编码数据流。
发射端设备得到多个预编码数据流后，可以向接收端设备发送该多个预编码数据流，该接收端设备可以包括第一接收端设备、第二接收端设备和第三接收端设备。其中，当发射端设备为图1所示实施环境中的基站01时，该第一接收端设备可以为图1所示实施环境中的UE-02，该第二接收端设备可以为图1所示实施环境中的UE-03，该第三接收端设备可以为图1所示实施环境中的UE-04。
示例地，发射端设备向第一接收端设备发射多个预编码数据流中的通过对一原始空间流进行发射分集处理并预编码得到的至少两个初始空间流对应的多个预编码数据流，向第二接收端设备发射多个预编码数据流中的与多个初始空间流中的至少一个初始空间流对应的多个预编码数据流，向第三接收端设备发射多个初始空间流中的通过对另一原始空间流进行发射分集处理并预编码得到的至少两个初始空间流对应的多个预编码数据流。
示例地，假设一原始空间流为原始空间流1，另一原始空间流为原始空间流2，原始空间流1经发射分集处理得到初始空间流11、初始空间流12，且原始空间流1中还包括未经发射分集处理的空间流，当原始空间流经过发射分集处理后，该原始空间流中经过发射分集处理的部分和未经过发射分集处理的部分都可以称为初始空间流，因此，原始空间流1还可以包含未经发射分集处理的初始空间流13，原始空间流2经发射分集处理得到初始空间流21和初始空间流22，初始空间流11经过预编码得到预编码数据流110，初始空间流12经过预编码得到预编码数据流120，初始空间流13经过预编码得到预编码数据流130，初始空间流21经过预编码得到预编码数据流210，初始空间流22经过预编码得到预编码数据流220，因此，发射端设备向第一接收端设备发射预编码数据流110和预编码数据流120，向第二接收端设备发射预编码数据流130，向第三接收端设备发射预编码数据流210和预编码数据流220。
步骤703、发射端设备对多个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同。
在本发明实施例中，多个初始空间流中的每个初始空间流对应一个解调参考信号，发射端设备可以对多个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，可选地，发射端设备可以使用与对初始空间流进行预编码相同的预编码向量来对相应的解调参考信号进行预编码。
发射端设备可以通过多个预编码向量对多个初始空间流进行预编码，不同的初始空间流对应不同的预编码向量，每个初始空间流与一DMRS相关联，该DMRS与该初始空间流通 过相同的预编码向量进行预编码，UE借助该DMRS对该初始空间流进行解调，且该DMRS由其DMRS端口标识。由此可知，每个预编码向量对应一个DMRS端口，不同的预编码向量对应的DMRS端口不同。DMRS用于信道解调，发射端设备对多个初始空间流的DMRS进行预编码，得到多个预编码DMRS，并发送该多个预编码DMRS。其中，每个初始空间流对应一个DMRS，每个初始空间流通过预编码得到的预编码数据流可以通过该初始空间流对应的DMRS进行解调，这是因为每个初始空间流使用的预编码向量和该初始空间流的DMRS使用的预编码向量相同，但是初始空间流的DMRS不需要进行发射分集处理。换句话说，原始空间流在经过发射分集得到至少两个初始空间流后，这些初始空间流与各自的DMRS相关联，这些DMRS彼此可以不同。接收端设备根据DMRS的端口对应的DMRS对接收到的预编码数据流进行解调，得到初始空间流。如果至少两个初始空间流是通过对原始空间流进行发射分集得到的，则在经过解调获得上述初始空间流之后，还需要根据发射端设备生成上述初始空间流时所采用的发射分集方式，由上述至少两个初始空间流恢复出原始空间流。
步骤704、发射端设备向接收端设备发送多个预编码解调参考信号。
发射端设备得到多个预编码解调参考信号后，可以向接收端设备发送多个预编码解调参考信号。由于每个初始空间流对应一个解调参考信号，因此，发射端设备可以向相应的初始空间流对应的接收端设备发射相应的解调参考信号。
示例地，初始空间流11对应的解调参考信号为S11，初始空间流S12对应的解调参考信号为S12，初始空间流13对应的解调参考信号为S13，初始空间流21对应的解调参考信号为S21，初始空间流22对应的解调参考信号为S22，而发射端设备对解调参考信号S11进行预编码得到的预编码解调参考信号为S110，对解调参考信号S12进行预编码得到的预编码解调参考信号为S120，对解调参考信号S13进行预编码得到的预编码解调参考信号为S130，对解调参考信号S21进行预编码得到的预编码解调参考信号为S210，对解调参考信号S22进行预编码得到的预编码解调参考信号为S220，则发射端设备向第一接收端设备发送预编码解调参考信号S110和预编码解调参考信号S120，向第二接收端设备发送预编码解调参考信号S130，向第三接收端设备发送预编码解调参考信号S210和预编码解调参考信号S220。
需要说明的是，本发明实施例中，由于发射端设备对初始空间流进行了发射分集处理，因此，接收端设备在数据解调时，不仅需要获知DMRS的端口号，还需要获知发射端设备对原始空间流进行发射分集处理时所采用的发射分集处理方式，在本发明实施例中，发射端设备所采用的发射分集处理方式包括但不限于：空时发射分集处理、空频发射分集处理或者空时频发射分集处理。以下以发射端设备为基站，接收端设备为UE为例进行说明，当发射端设备为UE，接收端设备为基站时可以参考下述描述。具体地，发射端设备可以将每个初始空间流对应的DMRS的端口信息(比如端口标识)和/或初始空间流使用的发射分集处理方式的信息一起通过下行信令发送给接收端设备，接收端设备可以根据每个初始空间流对应的DMRS的端口信息和/或初始空间流使用的发射分集处理方式进行数据解调，其中，发射端设备可以通过如下几种方式向接收端设备发送初始空间流对应的DMRS的端口信息和/或初始空间流使用的发射分集处理方式的信息：
方式一、发射端设备通过下行信令发送每个初始空间流对应的DMRS的端口标识和每个初始空间流对应的发射分集处理方式的信息。其中，每个初始空间流对应的发射分集处理方式的信息也即是发射端设备在对原始空间流进行发射分集处理得到相应的初始空间流的 发射分集处理方式的信息。
例如，基站通过下行信令指示UE-02基站发送DMRS的端口标识为x+1与x+2，同时指示UE-02基站采用的分集发射处理方式为空时发射分集处理；又例如基站通过下行信令指示UE-02基站发送DMRS的端口标识为x，x+1，x+2与x+3，同时指示UE-02基站采用的发射分集处理方式为空频发射分集处理。基站通过下行信令指示UE发射分集处理方式时，可以固定分配几个bit(中文：比特)用于指定发射分集处理方式，例如，采用2bit指示发射分集处理方式，2bit共可以指示4种发射分集处理方式，例如，00表示空时发射分集处理，01表示空频发射分集处理，当然也可以采用其他方式指示发射分集处理方式。当同一UE的初始空间流既包含经过发射分集处理得到的初始空间流，又包含未经发射分集处理的初始空间流时，此时，基站还需要指示哪些初始空间流经过发射分集处理以及发射分集处理方式，哪些初始空间流未经发射分集处理。
方式二、发射端设备通过下行信令发送每个初始空间流对应的DMRS的端口标识，其中，每个初始空间流对应的DMRS的端口或端口数量唯一对应一种发射分集处理方式。
该方式二中，初始空间流对应的DMRS的端口标识或端口数量可以指示发射分集处理方式，端口标识或端口数量与发射分集处理方式之间具有映射关系，其中，每个初始空间流对应的DMRS的端口或端口数量唯一对应一种发射分集处理方式，接收端设备可以根据DMRS的端口标识或端口数量和该映射关系确定发射分集处理方式。例如，该映射关系为：端口x+1与x+2必须使用空时发射分集处理，或者，使用两个端口必须使用空时发射分集处理。那么当接收端设备通过下行信令获取到初始空间流对应的DMRS的端口标识为x+1与x+2时，根据该映射关系确定发射端设备使用的发射分集处理方式为空时发射分集处理。
方式三、发射端设备通过下行信令发送每个初始空间流对应的发射分集处理方式的信息，其中，每个初始空间流对应的发射分集处理方式唯一对应一组DMRS的端口。
其中，发射分集处理方式的信息可以为发射分集处理方式的标识，或者，发射端设备可以通过一个或多个bit来指示发射分集处理方式。该方式三中，初始空间流对应的发射分集处理方式可以指示DMRS的端口，发射分集处理方式和端口标识之间具有映射关系，其中，每个初始空间流使用的发射分集处理方式唯一对应一组DMRS的端口，接收端设备可以根据发射分集处理方式和该映射关系确定DMRS的端口。例如，基站通过下行信令指示UE-02基站采用的发射分集处理方式为空时发射分集处理，该映射关系为：使用空时发射分集处理进行发射分集处理必须使用端口x+1与x+2，那么根据基站指示的发射分集处理方式和该映射关系，UE-02可以获知DMRS的端口号为x+1与x+2。
方式四、发射端设备通过下行信令发送每个初始空间流对应的DMRS的端口数量，其中，每个初始空间流对应的DMRS的端口数量唯一对应一种发射分集处理方式和一组DMRS的端口。
该方式四中，通过初始空间流的DMRS的端口数量指示初始空间流使用的发射分集处理方式和DMRS的端口，发射分集处理方式、DMRS的端口数量和DMRS的端口之间具有映射关系，每个初始空间流对应的DMRS的端口数量唯一对应一种发射分集处理方式和一组DMRS的端口，接收端设备可以根据DMRS的端口数量和该映射关系确定发射分集处理方式和DMRS的端口。例如，基站通过下行信令指示UE-02初始空间流的DMRS的端口数量为2，该映射关系为：使用端口数为2必须使用空时发射分集处理进行发射分集处理以及空间流的 DMRS必须使用端口号x+1与x+2。UE-02可以根据基站指示的初始空间流的DMRS端口数量和该映射关系，确定初始空间流使用的分集发射处理方式为空时发射分集处理，且初始空间流的DMRS的端口号为x+1与x+2。
方式五、发射端设备通过下行信令发送每个初始空间流对应的DMRS的端口数量和每个初始空间流对应的发射分集处理方式的信息，其中，每个初始空间流对应的DMRS的端口数量和每个初始空间流对应的发射分集处理方式唯一对应一组DMRS的端口。
该方式五中，通过初始空间流对应的DMRS的端口数量和初始空间流对应的发射分集处理方式指示初始空间流对应的DMRS的端口，发射分集处理方式、DMRS的端口数量和DMRS的端口之间具有映射关系，其中，每个初始空间流对应的DMRS的端口数量和每个初始空间流对应的发射分集处理方式唯一对应一组DMRS的端口。接收端设备可以根据发射端设备指示的DMRS的端口数量和初始空间流对应的发射分集处理方式以及该映射关系，确定DMRS的端口。例如，基站通过下行信令指示UE-02初始空间流对应的分集发射处理方式为空时发射分集处理且DMRS的端口数为2，该映射关系为：发射分集处理方式为空时发射分集处理且DMRS的端口数为2的初始空间流必须使用DMRS端口号为x+1与x+2的端口。
需要注意的是，为了更加清晰的描述本发明实施例提供的技术方案，上文借助现有LTE标准中层映射后获得的空间流来表示本发明实施例中提及的原始空间流或者未经发射分集处理的空间流。然而，本领域技术人员应当明白，除LTE标准中层映射后获得的空间流之外，本发明实施例提及的空间流还可以泛指任何经过编码和调制等处理后获得的、需要经过预编码发射的数据流(例如调制符号流)，在此不再赘述。
步骤705、接收端设备接收多个预编码数据流，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。
该步骤705可以与上述步骤702对应。接收端设备可以接收发射端设备发送的多个预编码数据流，该接收端设备可以为第一接收端设备、第二接收端设备或者第三接收端设备。其中，当发射端设备为图1所示实施环境中的基站01时，该第一接收端设备可以为图1所示实施环境中的UE-02，该第二接收端设备可以为图1所示实施环境中的UE-03，该第三接收端设备可以为图1所示实施环境中的UE-04。
示例地，当接收端设备为第一接收端设备时，接收端设备接收发射端设备发射的多个预编码数据流中的通过对一原始空间流进行发射分集处理并预编码得到的至少两个初始空间流对应的预编码数据流，当接收端设备为第二接收端设备时，接收端设备接收发射端设备发射的多个预编码数据流中的与多个初始空间流中的至少一个初始空间流对应的预编码数据流，当接收端设备为第三接收端设备时，接收端设备接收发射端设备发射的多个初始空间流中的通过对另一原始空间流进行发射分集处理并预编码得到的至少两个初始空间流对应的预编码数据流。
示例地，请同时参考步骤702，当接收端设备为第一接收端设备时，接收端设备接收发射端设备发射的预编码数据流110和预编码数据流120，当接收端设备为第二接收端设备时，接收端设备接收发射端设备发射的预编码数据流130，当接收端设备为第三接收端设备时，接收端设备接收发射端设备发射的预编码数据流210和预编码数据流220。
步骤706、接收多个预编码解调参考信号，多个预编码解调参考信号是对多个初始空间 流的解调参考信号进行预编码得到的，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同。
该步骤706可以与上述步骤704对应。接收端设备可以接收发射端设备发送的多个预编码解调参考信号，多个预编码解调参考信号是对多个初始空间流的解调参考信号进行预编码得到的，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同，该接收端设备可以为第一接收端设备、第二接收端设备或者第三接收端设备。其中，当发射端设备为图1所示实施环境中的基站01时，该第一接收端设备可以为图1所示实施环境中的UE-02，该第二接收端设备可以为图1所示实施环境中的UE-03，该第三接收端设备可以为图1所示实施环境中的UE-04。
示例地，请同时参考步骤704，当接收端设备为第一接收端设备时，接收端设备接收发射端设备发送的预编码解调参考信号S110和预编码解调参考信号S120，当接收端设备为第二接收端设备时，接收端设备接收发射端设备发送的预编码解调参考信号S130，当接收端设备为第三接收端设备时，接收端设备接收发射端设备发送的预编码解调参考信号S210和预编码解调参考信号S220。
步骤707、接收端设备从多个预编码数据流中恢复出至少两个初始空间流。
接收端设备接收多个预编码数据流后，可以从多个预编码数据流中恢复出至少两个初始空间流，可选地，接收端设备可以根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
在本发明实施例中，每个预编码向量可以对应一个DMRS端口，不同的预编码向量对应的DMRS端口不同。DMRS用于信道解调，发射端设备对多个初始空间流的DMRS进行预编码，得到多个预编码DMRS，并发送该多个预编码DMRS。其中，每个初始空间流对应一个DMRS，每个初始空间流通过预编码得到的预编码数据流可以通过该初始空间流对应的DMRS进行解调，这是因为每个初始空间流使用的预编码向量和该初始空间流的DMRS使用的预编码向量相同，但是初始空间流的DMRS不需要进行发射分集处理。换句话说，原始空间流在经过发射分集得到至少两个初始空间流后，这些初始空间流与各自的DMRS相关联，这些DMRS彼此可以不同。接收端设备可以根据DMRS的端口对应的DMRS对接收到的预编码数据流进行解调，得到初始空间流。
由以上可知，接收端设备要从多个预编码数据流中恢复出该至少两个初始空间流，需要获取该至少两个初始空间流的预编码DMRS和该至少两个初始空间流对应的DMRS端口。因此，接收端设备还会接收多个预编码DMRS，其中，该多个预编码DMRS是对该多个初始空间流的解调参考信号进行预编码得到的，其中，每个初始空间流对应一个DMRS，该每个初始空间流使用的预编码向量与每个初始空间流的DMRS使用的预编码向量相同。由于每个初始空间流使用的预编码向量与每个初始空间流的DMRS使用的预编码向量相同，根据该至少两个初始空间流的预编码DMRS和DMRS端口，可以解调出该至少两个初始空间流。
示例地，当接收端设备为第一接收端设备时，该接收端设备根据预编码解调参考信号S110和预编码解调参考信号S120恢复出初始空间流11和初始空间流12；当接收端设备为第二接收端设备时，该接收端设备根据预编码解调参考信号S130恢复出初始空间流13；当接 收端设备为第三接收端设备时，该接收端设备根据预编码解调参考信号S210和预编码解调参考信号S210恢复出初始空间流S220。其中，接收端设备根据初始空间流的预编码解调参考信号从预编码数据流中恢复出初始空间流的过程在相关技术中已有清楚描述，其具体实现过程可以参考相关技术，本发明实施例在此不再赘述。
步骤708、接收端设备根据至少两个初始空间流恢复出一原始空间流。
接收端设备恢复出至少两个初始空间流后，如果至少两个初始空间流是通过对一原始空间流进行发射分集得到的，则接收端设备可以根据至少两个初始空间流恢复出一原始空间流。具体地，接收端设备可以根据步骤704中相关的描述确定至少两个初始空间流对应的发射分集处理方式，进而根据至少两个初始空间流和相应的发射分集处理方式恢复出一原始空间流。
示例地，当接收端设备为第一接收端设备时，由于初始空间流11和初始空间流12是经过发射分集处理得到的，因此接收端设备可以确定该初始空间流11和初始空间流12对应的发射分集处理方式，该初始空间流11和初始空间流12对应的发射分集处理方式可以为空时发射分集处理，之后，接收端设备根据初始空间流11、初始空间流12和空时发射分集处理，恢复出原始空间流1。
示例地，当接收端设备为第二接收端设备时，由于初始空间流13未经过发射分集处理，因此接收端设备无需执行该步骤708。
示例地，当接收端设备为第三接收端设备时，由于初始空间流21和初始空间流22是经过发射分集处理得到的，因此接收端设备可以确定该初始空间流21和初始空间流22对应的发射分集处理方式，该初始空间流21和初始空间流22对应的发射分集处理方式可以为空频发射分集处理，之后，接收端设备根据初始空间流21、初始空间流22和空频发射分集处理，恢复出原始空间流2。
需要补充说明的是，本发明实施例提供的数据传输方法步骤的先后顺序可以进行适当调整，步骤也可以根据情况进行相应增减，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本申请的保护范围之内，因此不再赘述。
综上所述，本发明实施例提供的数据传输方法，发射端设备通过对多个初始空间流进行预编码得到多个预编码数据流，然后向接收端设备发射多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，接收端设备从多个预编码数据流中恢复出至少两个初始空间流，然后根据至少两个初始空间流恢复出一原始空间流。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的数据发送方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图8，其示出了本发明实施例提供的另一种数据发送方法的方法流程图，该数据发送方法可以由发射端设备来执行，该发射端设备可以为图1所示实施环境中的任一UE，参见图8，该数据发送方法可以包括：
步骤801、对至少两个初始空间流进行预编码，得到多个预编码数据流，至少两个初始 空间流是通过对一原始空间流进行发射分集处理得到的。
步骤802、发射多个预编码数据流。
综上所述，本发明实施例提供的数据发送方法，发射端设备通过对至少两个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的数据发送方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，该方法还包括：对至少两个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发送多个预编码解调参考信号。
上述所有可选技术方案，可以采用任意结合形成本申请的可选实施例，在此不再一一赘述。
综上所述，本发明实施例提供的数据发送方法，发射端设备通过对至少两个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的数据发送方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图9，其示出了本发明实施例提供的另一种数据接收方法的方法流程图，该数据接收方法可以由接收端设备来执行，该接收端设备可以为图1所示实施环境中的基站01，参见图9，该数据接收方法可以包括：
步骤901、接收多个预编码数据流，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。
步骤902、从多个预编码数据流中恢复出至少两个初始空间流。
步骤903、根据至少两个初始空间流恢复出一原始空间流。
综上所述，本发明实施例提供的数据接收方法，接收端设备通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的数据接收方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，该方法还包括：接收多个预编码解调参考信号，多个预编码解调参考信号是对至少两个初始空间流的解调参考信号进行预编码得到的，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
步骤902可以包括：根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
上述所有可选技术方案，可以采用任意结合形成本申请的可选实施例，在此不再一一赘述。
综上所述，本发明实施例提供的数据接收方法，接收端设备通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的数据接收方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图10，其示出了本发明实施例提供的再一种数据传输方法的方法流程图，该数据传输方法可以应用于由发射端设备和接收端设备组成的系统中，该发射端设备可以为图1所示实施环境中的任一UE，该接收端设备可以为图1所示实施环境中的基站01，该系统可以为图1所示实施环境中的MIMO系统。参见图10，该数据传输方法可以包括：
步骤1001、发射端设备对至少两个初始空间流进行预编码，得到多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。
在本发明实施例中，发射端设备可以为UE，接收端设备可以为基站，示例地，发射端设备为图1所示实施环境中的任一UE，比如，UE-02，接收端设备可以为图1所示实施环境中的基站01，一原始空间流可以与第一发射端设备相对应，该第一发射端设备也即是UE-02。本发明实施例以LTE系统为例进行说明，在LTE系统中，物理信道的处理过程通常包括加扰、调制映射、层映射、变换预编码、预编码、资源粒映射、OFDM信号生成，物理信道的处理对象通常为码字，码字通常为经过编码处理(至少包括信道编码处理)的比特流，码字经过加扰得到加扰比特流，加扰比特流经过调制映射得到调制符号流，调制符号流经过层映射后，被映射到多个符号层(符号层也称为空间流，空间层)，符号层依次经过变换预编码和预编码预编码得到多个预编码符号流，预编码符号流经过资源粒映射，被映射到多个资源粒上，这些资源粒随后经过OFDM信号生成阶段得到OFDM符号流，OFDM符号流随后通过天线端口进行发射。
在本发明实施例中，原始空间流可以是经过层映射后得到的空间流，该空间流也可以 称为数据流、符号流或符号层，本发明实施例在层映射和变换预编码之间增加了发射分集处理操作，当发射端设备向接收端设备发送数据时，可以对层映射后的原始空间流进行发射分集处理得到初始空间流。其中，发射分集处理可以包括但不限于空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
在本发明实施例中，如果将对原始空间流进行发射分集处理也视为一种预编码，则本实施例的方法相当于对层映射后的初始空间流进行了两级预编码，可以表示为Y＝F1(F2(S))，其中，F2表示发射分集对应的预编码(即发射分集处理)，F1表示波束赋形预编码(即传统意义上的预编码，可参考LTE标准中定义的预编码)，S表示原始空间流。采用不同的发射分集处理方式进行处理时，最终用于发送预编码数据流的端口数量不同，例如，当发射分集处理方式为SFBC时，端口数量可以为2，当发射分集处理方式为FSTD时，端口数量可以为4。
在本发明实施例中，至少两个初始空间流可以是经过发射分集处理得到的初始空间流，对初始空间流同时进行发射分集处理和预编码处理的传输方案可以称为BTD传输方案，本发明实施例中的一原始空间流可以与第一发射端设备相对应。其中，该第一发射端设备也即是本实施例中的发射端设备，可选地，当发射端设备为图1所示实施环境中的UE-02时，一原始空间流可以与UE-02相对应，该UE-02可以采用BTD传输方案进行数据传输。示例地，假设一原始空间流为原始空间流1，当原始空间流经过发射分集处理后可以得到初始空间流，因此，原始空间流1可以与UE-02相对应。
例如，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，该一原始空间流与第一发射端设备相对应，假设发射端设备为UE-02，接收端设备为基站01，UE-02共有端口x,x+1,…,y，UE-02可以使用端口x+1与x+2依据BTD传输方案传输数据。
本发明实施例中，可以通过至少两个预编码向量对至少两个初始空间流进行预编码，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个初始空间流与DMRS相关联，该DMRS与该初始空间流可以通过相同的预编码向量进行预编码，接收端设备(比如基站)可以借助该DMRS对该初始空间流进行解调，且该DMRS由其DMRS端口标识。
需要说明的是，该步骤1001中，发射端设备对原始空间流进行发射分集以及对至少两个初始空间流进行预编码的具体实现过程在相关技术中均已清楚描述，其实现过程都可以参考相关技术，本发明实施例在此不再赘述。
步骤1002、发射端设备向接收端设备发射多个预编码数据流。
发射端设备得到多个预编码数据流后，可以向接收端设备发送该多个预编码数据流，该发射端设备可以为第一发射端设备，具体可以为图1所示实施环境中的UE-02，该接收端设备可以为图1所示实施环境中的基站01。示例地，发射端设备向接收端设备发射通过对一原始空间流进行发射分集处理并预编码得到的至少两个初始空间流对应的多个预编码数据流。假设一原始空间流为原始空间流1，原始空间流1经发射分集处理得到初始空间流11和初始空间流12，初始空间流11经过预编码得到预编码数据流110，初始空间流12经过预编码得到预编码数据流120，则发射端设备向接收端设备发射预编码数据流110和预编码数据流120。
步骤1003、发射端设备对至少两个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，至少两个初始空间流中的每个初始空间流对应一个解调参考信号， 每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同。
在本发明实施例中，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，发射端设备可以对至少两个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，可选地，发射端设备可以使用与对初始空间流进行预编码相同的预编码向量来对相应的解调参考信号进行预编码。
发射端设备可以通过至少两个预编码向量对至少两个初始空间流进行预编码，不同的初始空间流对应不同的预编码向量，每个初始空间流与一DMRS相关联，该DMRS与该初始空间流通过相同的预编码向量进行预编码，基站可以借助该DMRS对该初始空间流进行解调，且该DMRS由其DMRS端口标识。由此可知，每个预编码向量对应一个DMRS端口，不同的预编码向量对应的DMRS端口不同。DMRS用于信道解调，发射端设备对至少两个初始空间流的DMRS进行预编码，得到多个预编码DMRS，并发送该多个预编码DMRS。其中，每个初始空间流对应一个DMRS，每个初始空间流通过预编码得到的预编码数据流可以通过该初始空间流对应的DMRS进行解调，这是因为每个初始空间流使用的预编码向量和该初始空间流的DMRS使用的预编码向量相同，但是初始空间流的DMRS不需要进行发射分集处理。换句话说，原始空间流在经过发射分集得到至少两个初始空间流后，这些初始空间流与各自的DMRS相关联，这些DMRS彼此可以不同。接收端设备根据DMRS的端口对应的DMRS对接收到的预编码数据流进行解调，得到初始空间流。如果至少两个初始空间流是通过对原始空间流进行发射分集得到的，则在经过解调获得上述初始空间流之后，还需要根据发射端设备生成上述初始空间流时所采用的发射分集方式，由上述至少两个初始空间流恢复出原始空间流。
步骤1004、发射端设备向接收端设备发送多个预编码解调参考信号。
发射端设备得到多个预编码解调参考信号后，可以向接收端设备发送多个预编码解调参考信号。示例地，初始空间流11对应的解调参考信号为S11，初始空间流S12对应的解调参考信号为S12，而发射端设备对解调参考信号S11进行预编码得到的预编码解调参考信号为S110，对解调参考信号S12进行预编码得到的预编码解调参考信号为S120，则发射端设备向接收端设备发送预编码解调参考信号S110和预编码解调参考信号S120。
需要说明的是，本发明实施例中，由于发射端设备对初始空间流进行了发射分集处理，因此，接收端设备在数据解调时，不仅需要获知DMRS的端口号，还需要获知发射端设备对原始空间流进行发射分集处理时所采用的发射分集处理方式，在本发明实施例中，发射端设备所采用的发射分集处理方式包括但不限于：空时发射分集处理、空频发射分集处理或者空时频发射分集处理。以下以发射端设备为UE，接收端设备为基站为例进行说明。具体地，发射端设备可以将每个初始空间流对应的DMRS的端口信息(比如端口标识)和/或初始空间流使用的发射分集处理方式的信息一起通过上行信令发送给接收端设备，接收端设备可以根据每个初始空间流对应的DMRS的端口信息和/或初始空间流使用的发射分集处理方式进行数据解调，其中，发射端设备可以通过如下几种方式向接收端设备发送初始空间流对应的DMRS的端口信息和/或初始空间流使用的发射分集处理方式的信息：
方式一、发射端设备通过上行信令发送每个初始空间流对应的DMRS的端口标识和每个初始空间流对应的发射分集处理方式的信息。其中，每个初始空间流对应的发射分集处理 方式的信息也即是发射端设备在对原始空间流进行发射分集处理得到相应的初始空间流的发射分集处理方式的信息。
例如，UE-02通过上行信令指示基站UE-02发送DMRS的端口标识为x+1与x+2，同时指示基站UE-02采用的分集发射处理方式为空时发射分集处理；又例如UE-02通过上行信令指示基站UE-02发送DMRS的端口标识为x，x+1，x+2与x+3，同时指示基站UE-02采用的发射分集处理方式为空频发射分集处理。UE通过上行信令指示基站发射分集处理方式时，可以固定分配几个bit用于指定发射分集处理方式，例如，采用2bit指示发射分集处理方式，2bit共可以指示4种发射分集处理方式，例如，00表示空时发射分集处理，01表示空频发射分集处理，当然也可以采用其他方式指示发射分集处理方式。
方式二、发射端设备通过上行信令发送每个初始空间流对应的DMRS的端口标识，其中，每个初始空间流对应的DMRS的端口或端口数量唯一对应一种发射分集处理方式。
该方式二中，初始空间流对应的DMRS的端口标识或端口数量可以指示发射分集处理方式，端口标识或端口数量与发射分集处理方式之间具有映射关系，其中，每个初始空间流对应的DMRS的端口或端口数量唯一对应一种发射分集处理方式，接收端设备可以根据DMRS的端口标识或端口数量和该映射关系确定发射分集处理方式。例如，该映射关系为：端口x+1与x+2必须使用空时发射分集处理，或者，使用两个端口必须使用空时发射分集处理。那么当接收端设备通过上行信令获取到初始空间流对应的DMRS的端口标识为x+1与x+2时，根据该映射关系确定发射端设备使用的发射分集处理方式为空时发射分集处理。
方式三、发射端设备通过上行信令发送每个初始空间流对应的发射分集处理方式的信息，其中，每个初始空间流对应的发射分集处理方式唯一对应一组DMRS的端口。
其中，发射分集处理方式的信息可以为发射分集处理方式的标识，或者，发射端设备可以通过一个或多个bit来指示发射分集处理方式。该方式三中，初始空间流对应的发射分集处理方式可以指示DMRS的端口，发射分集处理方式和端口标识之间具有映射关系，其中，每个初始空间流使用的发射分集处理方式唯一对应一组DMRS的端口，接收端设备可以根据发射分集处理方式和该映射关系确定DMRS的端口。例如，UE-02通过上行信令指示基站UE-02采用的发射分集处理方式为空时发射分集处理，该映射关系为：使用空时发射分集处理进行发射分集处理必须使用端口x+1与x+2，那么根据UE-02指示的发射分集处理方式和该映射关系，基站可以获知DMRS的端口号为x+1与x+2。
方式四、发射端设备通过上行信令发送每个初始空间流对应的DMRS的端口数量，其中，每个初始空间流对应的DMRS的端口数量唯一对应一种发射分集处理方式和一组DMRS的端口。
该方式四中，通过初始空间流的DMRS的端口数量指示初始空间流使用的发射分集处理方式和DMRS的端口，发射分集处理方式、DMRS的端口数量和DMRS的端口之间具有映射关系，每个初始空间流对应的DMRS的端口数量唯一对应一种发射分集处理方式和一组DMRS的端口，接收端设备可以根据DMRS的端口数量和该映射关系确定发射分集处理方式和DMRS的端口。例如，UE-02通过上行信令指示基站初始空间流的DMRS的端口数量为2，该映射关系为：使用端口数为2必须使用空时发射分集处理进行发射分集处理以及空间流的DMRS必须使用端口号x+1与x+2。基站可以根据UE-02指示的初始空间流的DMRS端口数量和该映射关系，确定初始空间流使用的分集发射处理方式为空时发射分集处理，且初始空 间流的DMRS的端口号为x+1与x+2。
方式五、发射端设备通过上行信令发送每个初始空间流对应的DMRS的端口数量和每个初始空间流对应的发射分集处理方式的信息，其中，每个初始空间流对应的DMRS的端口数量和每个初始空间流对应的发射分集处理方式唯一对应一组DMRS的端口。
该方式五中，通过初始空间流对应的DMRS的端口数量和初始空间流对应的发射分集处理方式指示初始空间流对应的DMRS的端口，发射分集处理方式、DMRS的端口数量和DMRS的端口之间具有映射关系，其中，每个初始空间流对应的DMRS的端口数量和每个初始空间流对应的发射分集处理方式唯一对应一组DMRS的端口。接收端设备可以根据发射端设备指示的DMRS的端口数量和初始空间流对应的发射分集处理方式以及该映射关系，确定DMRS的端口。例如，UE-02通过上行信令指示基站初始空间流对应的分集发射处理方式为空时发射分集处理且DMRS的端口数为2，该映射关系为：发射分集处理方式为空时发射分集处理且DMRS的端口数为2的初始空间流必须使用DMRS端口号为x+1与x+2的端口。
需要注意的是，为了更加清晰的描述本发明实施例提供的技术方案，上文借助现有LTE标准中层映射后获得的空间流来表示本发明实施例中提及的原始空间流。然而，本领域技术人员应当明白，除LTE标准中层映射后获得的空间流之外，本发明实施例提及的空间流还可以泛指任何经过编码和调制等处理后获得的、需要经过预编码发射的数据流(例如调制符号流)，在此不再赘述。
步骤1005、接收端设备接收多个预编码数据流，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。
该步骤1005可以与上述步骤1002对应。接收端设备可以接收发射端设备发送的多个预编码数据流，该发射端设备可以为第一发射端设备，该第一发射端设备可以为图1所示实施环境中的UE-02，接收端设备为图1所示实施环境中的基站01。
示例地，接收端设备接收发射端设备发射的多个预编码数据流，该多个预编码数据流是通过对一原始空间流进行发射分集处理并预编码得到的至少两个初始空间流对应的预编码数据流。请同时参考步骤1002，接收端设备接收发射端设备发射的预编码数据流110和预编码数据流120。
步骤1006、接收多个预编码解调参考信号，多个预编码解调参考信号是对至少两个初始空间流的解调参考信号进行预编码得到的，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同。
该步骤1006可以与上述步骤1004对应。接收端设备可以接收发射端设备发送的多个预编码解调参考信号，多个预编码解调参考信号是对至少两个初始空间流的解调参考信号进行预编码得到的，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同，该接收端设备可以为图1所示实施环境中的基站01，该发射端设备(第一接收端设备)可以为图1所示实施环境中的UE-02。示例地，请同时参考步骤1004，接收端设备接收发射端设备发送的预编码解调参考信号S110和预编码解调参考信号S120。
步骤1007、接收端设备从多个预编码数据流中恢复出至少两个初始空间流。
接收端设备接收多个预编码数据流后，可以从多个预编码数据流中恢复出至少两个初始空间流，可选地，接收端设备可以根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
在本发明实施例中，每个预编码向量可以对应一个DMRS端口，不同的预编码向量对应的DMRS端口不同。DMRS用于信道解调，发射端设备对多个初始空间流的DMRS进行预编码，得到多个预编码DMRS，并发送该多个预编码DMRS。其中，每个初始空间流对应一个DMRS，每个初始空间流通过预编码得到的预编码数据流可以通过该初始空间流对应的DMRS进行解调，这是因为每个初始空间流使用的预编码向量和该初始空间流的DMRS使用的预编码向量相同，但是初始空间流的DMRS不需要进行发射分集处理。换句话说，原始空间流在经过发射分集得到至少两个初始空间流后，这些初始空间流与各自的DMRS相关联，这些DMRS彼此可以不同。接收端设备可以根据DMRS的端口对应的DMRS对接收到的预编码数据流进行解调，得到初始空间流。
由以上可知，接收端设备要从多个预编码数据流中恢复出该至少两个初始空间流，需要获取该至少两个初始空间流的预编码DMRS和该至少两个初始空间流对应的DMRS端口。因此，接收端设备还会接收多个预编码DMRS，其中，该多个预编码DMRS是对该多个初始空间流的解调参考信号进行预编码得到的，其中，每个初始空间流对应一个DMRS，该每个初始空间流使用的预编码向量与每个初始空间流的DMRS使用的预编码向量相同。由于每个初始空间流使用的预编码向量与每个初始空间流的DMRS使用的预编码向量相同，根据该至少两个初始空间流的预编码DMRS和DMRS端口，可以解调出该至少两个初始空间流。示例地，接收端设备根据预编码解调参考信号S110和预编码解调参考信号S120恢复出初始空间流11和初始空间流12。其中，接收端设备根据初始空间流的预编码解调参考信号从预编码数据流中恢复出初始空间流的过程在相关技术中已有清楚描述，其具体实现过程可以参考相关技术，本发明实施例在此不再赘述。
步骤1008、接收端设备根据至少两个初始空间流恢复出一原始空间流。
接收端设备恢复出至少两个初始空间流后，如果至少两个初始空间流是通过对一原始空间流进行发射分集得到的，则接收端设备可以根据至少两个初始空间流恢复出一原始空间流。具体地，接收端设备可以根据步骤1004中相关的描述确定至少两个初始空间流对应的发射分集处理方式，进而根据至少两个初始空间流和相应的发射分集处理方式恢复出一原始空间流。
示例地，接收端设备确定初始空间流11和初始空间流12对应的发射分集处理方式，该初始空间流11和初始空间流12对应的发射分集处理方式可以为空时发射分集处理，之后，接收端设备根据初始空间流11、初始空间流12和空时发射分集处理，恢复出原始空间流1。
需要说明的是，当发射端设备是UE时，发射端设备可以在对原始空间流进行发射分集处理得到初始空间流后，直接对初始空间流进行发射，而无需再进行预编码。
还需要说明的是，本实施例中的接收端设备为基站，基站在接收第一发射端设备发射的预编码数据流时，还可以在同一时频资源上接收其他发射端设备发射的数据流，以实现时频资源的空分复用，该其他发射端设备发射的数据流可以是经过发射分集处理并进行预编码得到的预编码数据流，也可以是未经过发射分集处理仅经过预编码处理的预编码数据流，还可以是仅经过发射分集处理而未经过预编码处理的数据流，或者，还可以是部分经 过发射分集处理和预编码处理、部分未经过发射分集处理仅经过预编码处理，部分经过发射分集处理而未经过预编码处理的数据流。示例地，接收端设备还可以接收第二发射端设备发射的预编码数据流130，该预编码数据流130可以是对初始空间流13进行预编码得到的预编码数据流，且该初始空间流13未经过发射分集处理，也即是，该预编码数据流130是仅经过预编码处理而未经过发射分集处理的数据流。再示例地，当接收端设备可以接收第三发送端设备发射的预编码数据流210和预编码数据流220，该预编码数据流210可以是对初始空间流21进行发射分集处理和预编码处理得到的预编码数据流，该预编码数据流220可以是对初始空间流22进行发射分集处理和预编码处理得到的预编码数据流，也即是，该预编码数据流210和预编码数据流220是既经过经过发射分集处理又经过预编码处理的数据流。
需要补充说明的是，本发明实施例提供的数据传输方法步骤的先后顺序可以进行适当调整，步骤也可以根据情况进行相应增减，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本申请的保护范围之内，因此不再赘述。
综上所述，本发明实施例提供的数据传输方法，发射端设备通过对多个初始空间流进行预编码得到多个预编码数据流，然后向接收端设备发射多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，接收端设备从多个预编码数据流中恢复出至少两个初始空间流，然后根据至少两个初始空间流恢复出一原始空间流。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的数据发送方法可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
下述为本申请的装置实施例，可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节，请参照本申请方法实施例。
请参考图11，其示出了本发明实施例提供的一种基站1100的框图。该基站1100可以为图1所示实施环境中的基站01，用于执行图4-1所示实施例提供的部分方法以及图2所示实施例提供的全部方法。参见图11，该基站1100可以包括：
生成模块1110，用于生成传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。
发送模块1120，用于发送传输方案指示信息。
可选地，至少两种传输方案还包含开环空分复用传输方案。
可选地，至少两种传输方案还包含闭环空分复用传输方案。
可选地，至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，至少两种传输方案还包含开环发射分集传输方案。
可选地，生成模块1110，用于生成下行控制信息，下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由传输方案指示信息所指示的传输方案相对应；
发送模块1120，用于发送下行控制信息。
综上所述，本发明实施例提供的基站，通过生成并向UE发送传输方案指示信息，传输 方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以根据基站的指示采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
请参考图12-1，其示出了本发明实施例提供的一种UE-1200的框图。该UE-1200可以为图1所示实施环境中的UE-02，用于执行图4-1所示实施例提供的部分方法以及图3所示实施例提供的全部方法。参见图12-1，该UE-1200可以包括：
接收模块1210，用于接收传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案；
传输模块1220，用于依据传输方案指示信息所指示的传输方案进行数据传输。
可选地，至少两种传输方案还包含开环空分复用传输方案。
可选地，至少两种传输方案还包含闭环空分复用传输方案。
可选地，至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，至少两种传输方案还包含开环发射分集传输方案。
可选地，接收模块1210，用于接收下行控制信息，下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由传输方案指示信息所指示的传输方案相对应；
请参考图12-2，其示出了本发明实施例提供的另一种UE-1200的框图，在图12-1的基础上，该UE-1200还包括：
第一确定模块1230，用于在当前传输模式所包含的至少两种传输方案中确定与下行控制信息的格式对应的传输方案；
第二确定模块1240，用于将与下行控制信息的格式对应的传输方案，确定为传输方案指示信息所指示的传输方案。
综上所述，本发明实施例提供的UE，通过接收传输方案指示信息并依据传输方案指示信息所指示的传输方案进行数据传输，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
需要说明的是：上述实施例提供的基站和UE在传输数据时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的基站、UE和数据传输方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
请参考图13，其示出了本发明实施例提供的一种基站1300的框图。该基站1300可以 为图1所示实施环境中的基站01，用于执行图4-1所示实施例提供的部分方法以及图2所示实施例提供的全部方法。参见图13，该基站1300可以包括：处理器1310和发射机1320，处理器1310与发射机1320耦合。
处理器1310，用于生成传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案；
发射机1320，用于发送传输方案指示信息。
可选地，至少两种传输方案还包含开环空分复用传输方案。
可选地，至少两种传输方案还包含闭环空分复用传输方案。
可选地，至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，至少两种传输方案还包含开环发射分集传输方案。
可选地，处理器1310，用于生成下行控制信息，下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由传输方案指示信息所指示的传输方案相对应；
发射机1320，用于发送下行控制信息。
综上所述，本发明实施例提供的基站，通过生成并向UE发送传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以根据基站的指示采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
请参考图14，其示出了本发明实施例提供的一种UE-1400的框图。该UE-1400可以为图1所示实施环境中的UE-02，用于执行图4-1所示实施例提供的部分方法以及图3所示实施例提供的全部方法。参见图14，该UE-1400可以包括：接收机1410和处理器1420，接收机1410与处理器1420耦合。
接收机1410，用于接收传输方案指示信息，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案；
处理器1420，用于依据传输方案指示信息所指示的传输方案进行数据传输。
可选地，至少两种传输方案还包含开环空分复用传输方案。
可选地，至少两种传输方案还包含闭环空分复用传输方案。
可选地，至少两种传输方案还包含多用户多输入多输出传输方案。
可选地，至少两种传输方案还包含开环发射分集传输方案。
可选地，接收机1410，用于接收下行控制信息，下行控制信息的格式与当前传输模式所包含的至少两种传输方案中由传输方案指示信息所指示的传输方案相对应；
处理器1420，还用于：
在当前传输模式所包含的至少两种传输方案中确定与下行控制信息的格式对应的传输方案；
将与下行控制信息的格式对应的传输方案，确定为传输方案指示信息所指示的传输方 案。
综上所述，本发明实施例提供的UE，通过接收传输方案指示信息并依据传输方案指示信息所指示的传输方案进行数据传输，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
请参考图15，其示出了本发明实施例提供的一种数据传输系统1500结构示意图。参见图15，该数据传输系统1500可以包括：基站1510和UE-1520。
在一种可能的实现方式中，基站1510为图11所示的基站1100；UE-1520为图12-1或图12-2所示的UE-1200；
在另一种可能的实现方式中，基站1510为13所示的基站1300；UE-1520为图14所示的UE-1400。
综上所述，本发明实施例提供的数据传输系统，基站通过生成并向UE发送传输方案指示信息，UE依据传输方案指示信息所指示的传输方案进行数据传输，传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，至少两种传输方案包含波束赋形发射分集传输方案。由于当前传输模式包含至少两种传输方案，且至少两种传输方案包含波束赋形发射分集传输方案，因此，UE可以根据基站的指示采用波束赋形发射分集传输方案进行数据传输，解决了相关技术中UE传输数据的灵活性较低的问题，达到了提高UE传输数据的灵活性的效果。
请参考图16-1，其示出了本发明实施例提供的一种发射端设备1600的框图，该发射端设备1600可以为图1所示实施环境中的基站01，用于执行图7所示实施例提供的部分方法以及图5所示实施例提供的全部方法。参见图16-1，该发射端设备1600可以包括：
第一预编码模块1610，用于对多个初始空间流进行预编码，得到多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射模块1620，用于发射多个预编码数据流。
综上所述，本发明实施例提供的发射端设备，通过对多个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的发射端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，请参考图16-2，在图16-1的基础上，该发射端设备1600还包括：
第二预编码模块1630，用于对多个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发送模块1640，用于发送多个预编码解调参考信号。
综上所述，本发明实施例提供的发射端设备，通过对多个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的发射端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图17-1，其示出了本发明实施例提供的一种接收端设备1700的框图，该接收端设备1700可以为图1所示实施环境中的任一UE，用于执行图7所示实施例提供的部分方法以及图6所示实施例提供的全部方法。参见图17-1，该接收端设备1700可以包括：
第一接收模块1710，用于接收多个预编码数据流，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
第一恢复模块1720，用于从多个预编码数据流中恢复出至少两个初始空间流；
第二恢复模块1730，用于根据至少两个初始空间流恢复出一原始空间流。
综上所述，本发明实施例提供的接收端设备，通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的接收端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，请参考图17-2，在图17-1的基础上，该接收端设备1700还包括：
第二接收模块1740，用于接收多个预编码解调参考信号，多个预编码解调参考信号是对多个初始空间流的解调参考信号进行预编码得到的，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
第一恢复模块1720，用于根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
综上所述，本发明实施例提供的接收端设备，通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的接收端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图18-1，其示出了本发明实施例提供的一种发射端设备1800的框图，该发射端设备1800可以为图1所示实施环境中的任一UE，用于执行图10所示实施例提供的部分方法以及图8所示实施例提供的全部方法。参见图18-1，该发射端设备1800可以包括：
第一预编码模块1810，用于对至少两个初始空间流进行预编码，得到多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射模块1820，用于发射多个预编码数据流。
综上所述，本发明实施例提供的发射端设备，通过对至少两个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的发射端设备可以使接收端设备同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，请参考图18-2，在图18-1的基础上，该发射端设备1800还包括：
第二预编码模块1830，用于对至少两个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发送模块1840，用于发送多个预编码解调参考信号。
综上所述，本发明实施例提供的发射端设备，通过对至少两个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，至少两个初始空间流是通过对一原 始空间流进行发射分集处理得到的。由于至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的发射端设备可以使接收端设备同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图19-1，其示出了本发明实施例提供的一种接收端设备1900的框图，该接收端设备1900可以为图1所示实施环境中的基站01，用于执行图10所示实施例提供的部分方法以及图9所示实施例提供的全部方法。参见图19-1，该接收端设备1900可以包括：
第一接收模块1910，用于接收多个预编码数据流，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
第一恢复模块1920，用于从多个预编码数据流中恢复出至少两个初始空间流；
第二恢复模块1930，用于根据至少两个初始空间流恢复出一原始空间流。
综上所述，本发明实施例提供的接收端设备，通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的接收端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，请参考图19-2，在图19-1的基础上，该接收端设备1900还包括：
第二接收模块1940，用于接收多个预编码解调参考信号，多个预编码解调参考信号是对至少两个初始空间流的解调参考信号进行预编码得到的，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
第一恢复模块1920，用于根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
综上所述，本发明实施例提供的接收端设备，通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的接收端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图20，其示出了本发明实施例提供的一种发射端设备2000的框图，该发射端设备2000可以为图1所示实施环境中的基站01，用于执行图7所示实施例提供的部分方法以及 图5所示实施例提供的全部方法。参见图20，该发射端设备2000可以包括：处理器2010和发射机2020，处理器2010与发射机2020耦合，
处理器2010，用于对多个初始空间流进行预编码，得到多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射机2020，用于发射多个预编码数据流。
综上所述，本发明实施例提供的发射端设备，通过对多个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的发射端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，处理器2010，还用于对多个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发射机2020，还用于发送多个预编码解调参考信号。
综上所述，本发明实施例提供的发射端设备，通过对多个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的发射端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图21，其示出了本发明实施例提供的一种接收端设备2100的框图，该接收端设备2100可以为图1所示实施环境中的任一UE，用于执行图7所示实施例提供的部分方法以及图6所示实施例提供的全部方法。参见图21，该接收端设备2100可以包括：接收机2110和处理器2120，接收机2110与处理器2120耦合，
接收机2110，用于接收多个预编码数据流，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
处理器2120，用于从多个预编码数据流中恢复出至少两个初始空间流；
处理器2120，用于根据至少两个初始空间流恢复出一原始空间流。
综上所述，本发明实施例提供的接收端设备，通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的接收端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一接收端设备相对应。
可选地，多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
可选地，多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，另一原始空间流与第三接收端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，接收机2110，还用于接收多个预编码解调参考信号，多个预编码解调参考信号是对多个初始空间流的解调参考信号进行预编码得到的，多个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
处理器2120，还用于根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
综上所述，本发明实施例提供的接收端设备，通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对多个初始空间流进行预编码得到的，多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，其他初始空间流可以是未经过发射分集处理得到的，因此，本发明实施例提供的接收端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图22，其示出了本发明实施例提供的一种发射端设备2200的框图，该发射端设备2200可以为图1所示实施环境中的任一UE，用于执行图10所示实施例提供的部分方法以及图8所示实施例提供的全部方法。参见图22，该发射端设备2200可以包括：处理器2210和发射机2220，处理器2210与发射机2220耦合。
处理器2210，用于对至少两个初始空间流进行预编码，得到多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
发射机2220，用于发射多个预编码数据流。
综上所述，本发明实施例提供的发射端设备，通过对至少两个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，至少两个初始空间流是通过对一原 始空间流进行发射分集处理得到的。由于至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的发射端设备可以使接收端设备同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同的预编码向量对应的DMRS端口不同。
可选地，该处理器2210，用于对至少两个初始空间流的解调参考信号进行预编码，得到多个预编码解调参考信号，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
发射机2220，用于发送多个预编码解调参考信号。
综上所述，本发明实施例提供的发射端设备，通过对至少两个初始空间流进行预编码得到多个预编码数据流，然后发射多个预编码数据流，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的发射端设备可以使接收端设备同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
请参考图23，其示出了本发明实施例提供的一种接收端设备2300的框图，该接收端设备2300可以为图1所示实施环境中的基站01，用于执行图10所示实施例提供的部分方法以及图9所示实施例提供的全部方法。参见图23，该接收端设备23可以包括：接收机2310和处理器2320，接收机2310与处理器2320耦合，
接收机2310，用于接收多个预编码数据流，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
处理器2320，用于从多个预编码数据流中恢复出至少两个初始空间流；
处理器2320，用于根据至少两个初始空间流恢复出一原始空间流。
综上所述，本发明实施例提供的接收端设备，通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的接收端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
可选地，一原始空间流与第一发射端设备相对应。
可选地，发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
可选地，至少两个初始空间流中不同的初始空间流对应不同的预编码向量，每个预编码向量对应一个解调参考信号DMRS端口，不同预编码向量对应的DMRS端口不同。
可选地，接收机2310，还用于接收多个预编码解调参考信号，多个预编码解调参考信号是对至少两个初始空间流的解调参考信号进行预编码得到的，至少两个初始空间流中的每个初始空间流对应一个解调参考信号，每个初始空间流使用的预编码向量与每个初始空间流的解调参考信号使用的预编码向量相同；
处理器2320，还用于根据至少两个初始空间流的预编码解调参考信号从多个预编码数据流中恢复出至少两个初始空间流。
综上所述，本发明实施例提供的接收端设备，通过接收多个预编码数据流，从多个预编码数据流中恢复出至少两个初始空间流，根据至少两个初始空间流恢复出一原始空间流，其中，多个预编码数据流是对至少两个初始空间流进行预编码得到的，至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的。由于多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的，因此，本发明实施例提供的接收端设备可以将同一时频资源同时进行发射分集和空分复用，提高了时频资源的利用率。
本发明实施例中，术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (55)

  1. 一种传输方案指示方法，其特征在于，所述方法包括：
    生成传输方案指示信息，所述传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，所述至少两种传输方案包含波束赋形发射分集传输方案；
    发送所述传输方案指示信息。
  2. 如权利要求1所述的方法，其特征在于，所述至少两种传输方案还包含开环空分复用传输方案。
  3. 如权利要求1所述的方法，其特征在于，所述至少两种传输方案还包含闭环空分复用传输方案。
  4. 如权利要求1所述的方法，其特征在于，所述至少两种传输方案还包含多用户多输入多输出传输方案。
  5. 如权利要求1至4任一所述的方法，其特征在于，所述至少两种传输方案还包含开环发射分集传输方案。
  6. 如权利要求1至5任一所述的方法，其特征在于，所述生成传输方案指示信息，包括：
    生成下行控制信息，所述下行控制信息的格式与所述当前传输模式所包含的至少两种传输方案中由所述传输方案指示信息所指示的传输方案相对应；
    所述发送所述传输方案指示信息，包括：发送所述下行控制信息。
  7. 一种数据传输方法，其特征在于，所述方法包括：
    接收传输方案指示信息，所述传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，所述至少两种传输方案包含波束赋形发射分集传输方案；
    依据所述传输方案指示信息所指示的传输方案进行数据传输。
  8. 如权利要求7所述的方法，其特征在于，所述至少两种传输方案还包含开环空分复用传输方案。
  9. 如权利要求7所述的方法，其特征在于，所述至少两种传输方案还包含闭环空分复用传输方案。
  10. 如权利要求7所述的方法，其特征在于，所述至少两种传输方案还包含多用户多输入多输出传输方案。
  11. 如权利要求7至10任一所述的方法，其特征在于，所述至少两种传输方案还包含开环发射分集传输方案。
  12. 如权利要求7至11任一所述的方法，其特征在于，所述接收传输方案指示信息，包括：接收下行控制信息，所述下行控制信息的格式与所述当前传输模式所包含的至少两种传输方案中由所述传输方案指示信息所指示的传输方案相对应；
    在所述依据所述传输方案指示信息所指示的传输方案进行数据传输之前，所述方法还包括：
    在所述当前传输模式所包含的至少两种传输方案中确定与所述下行控制信息的格式对应的传输方案；
    将所述与所述下行控制信息的格式对应的传输方案，确定为所述传输方案指示信息所指 示的传输方案。
  13. 一种基站，其特征在于，所述基站包括：
    生成模块，用于生成传输方案指示信息，所述传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，所述至少两种传输方案包含波束赋形发射分集传输方案；
    发送模块，用于发送所述传输方案指示信息。
  14. 如权利要求13所述的基站，其特征在于，所述至少两种传输方案还包含开环空分复用传输方案。
  15. 如权利要求13所述的基站，其特征在于，所述至少两种传输方案还包含闭环空分复用传输方案。
  16. 如权利要求13所述的基站，其特征在于，所述至少两种传输方案还包含多用户多输入多输出传输方案。
  17. 如权利要求13至16任一所述的基站，其特征在于，所述至少两种传输方案还包含开环发射分集传输方案。
  18. 如权利要求13至17任一所述的基站，其特征在于，
    所述生成模块，用于生成下行控制信息，所述下行控制信息的格式与所述当前传输模式所包含的至少两种传输方案中由所述传输方案指示信息所指示的传输方案相对应；
    所述发送模块，用于发送所述下行控制信息。
  19. 一种用户设备UE，其特征在于，所述UE包括：
    接收模块，用于接收传输方案指示信息，所述传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，所述至少两种传输方案包含波束赋形发射分集传输方案；
    传输模块，用于依据所述传输方案指示信息所指示的传输方案进行数据传输。
  20. 如权利要求19所述的UE，其特征在于，所述至少两种传输方案还包含开环空分复用传输方案。
  21. 如权利要求19所述的UE，其特征在于，所述至少两种传输方案还包含闭环空分复用传输方案。
  22. 如权利要求19所述的UE，其特征在于，所述至少两种传输方案还包含多用户多输入多输出传输方案。
  23. 如权利要求19至22任一所述的UE，其特征在于，所述至少两种传输方案还包含开环发射分集传输方案。
  24. 如权利要求19至23任一所述的UE，其特征在于，
    所述接收模块，用于接收下行控制信息，所述下行控制信息的格式与所述当前传输模式所包含的至少两种传输方案中由所述传输方案指示信息所指示的传输方案相对应；
    所述UE还包括：
    第一确定模块，用于在所述当前传输模式所包含的至少两种传输方案中确定与所述下行控制信息的格式对应的传输方案；
    第二确定模块，用于将所述与所述下行控制信息的格式对应的传输方案，确定为所述传输方案指示信息所指示的传输方案。
  25. 一种基站，其特征在于，所述基站包括：处理器和发射机，所述处理器与所述发射机耦合，
    所述处理器，用于生成传输方案指示信息，所述传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，所述至少两种传输方案包含波束赋形发射分集传输方案；
    所述发射机，用于发送所述传输方案指示信息。
  26. 如权利要求25所述的基站，其特征在于，所述至少两种传输方案还包含开环空分复用传输方案。
  27. 如权利要求25所述的基站，其特征在于，所述至少两种传输方案还包含闭环空分复用传输方案。
  28. 如权利要求25所述的基站，其特征在于，所述至少两种传输方案还包含多用户多输入多输出传输方案。
  29. 如权利要求25至28任一所述的基站，其特征在于，所述至少两种传输方案还包含开环发射分集传输方案。
  30. 如权利要求25至29任一所述的基站，其特征在于，
    所述处理器，用于生成下行控制信息，所述下行控制信息的格式与所述当前传输模式所包含的至少两种传输方案中由所述传输方案指示信息所指示的传输方案相对应；
    所述发射机，用于发送所述下行控制信息。
  31. 一种用户设备UE，其特征在于，所述UE包括：接收机和处理器，所述接收机与所述处理器耦合，
    所述接收机，用于接收传输方案指示信息，所述传输方案指示信息用于指示当前传输模式所包含的至少两种传输方案中的一种传输方案，所述至少两种传输方案包含波束赋形发射分集传输方案；
    所述处理器，用于依据所述传输方案指示信息所指示的传输方案进行数据传输。
  32. 如权利要求31所述的UE，其特征在于，所述至少两种传输方案还包含开环空分复用传输方案。
  33. 如权利要求31所述的UE，其特征在于，所述至少两种传输方案还包含闭环空分复用传输方案。
  34. 如权利要求31所述的UE，其特征在于，所述至少两种传输方案还包含多用户多输入多输出传输方案。
  35. 如权利要求31至34任一所述的UE，其特征在于，所述至少两种传输方案还包含开环发射分集传输方案。
  36. 如权利要求31至35任一所述的UE，其特征在于，
    所述接收机，用于接收下行控制信息，所述下行控制信息的格式与所述当前传输模式所包含的至少两种传输方案中由所述传输方案指示信息所指示的传输方案相对应；
    所述处理器，还用于：
    在所述当前传输模式所包含的至少两种传输方案中确定与所述下行控制信息的格式对应的传输方案；
    将所述与所述下行控制信息的格式对应的传输方案，确定为所述传输方案指示信息所指示的传输方案。
  37. 一种数据传输系统，其特征在于，所述数据传输系统包括：
    权利要求13至18任一所述的基站，和，权利要求19至24任一所述的用户设备UE；
    或者，
    权利要求25至30任一所述的基站，和，权利要求31至36任一所述的用户设备UE。
  38. 一种数据发送方法，其特征在于，所述方法包括：
    对多个初始空间流进行预编码，得到多个预编码数据流，所述多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    发射所述多个预编码数据流。
  39. 一种数据接收方法，其特征在于，所述方法包括：
    接收多个预编码数据流，所述多个预编码数据流是对多个初始空间流进行预编码得到的，所述多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    从所述多个预编码数据流中恢复出所述至少两个初始空间流；
    根据所述至少两个初始空间流恢复出所述一原始空间流。
  40. 一种发射端设备，其特征在于，所述发射端设备包括：
    第一预编码模块，用于对多个初始空间流进行预编码，得到多个预编码数据流，所述多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    发射模块，用于发射所述多个预编码数据流。
  41. 一种接收端设备，其特征在于，所述接收端设备包括：
    第一接收模块，用于接收多个预编码数据流，所述多个预编码数据流是对多个初始空间流进行预编码得到的，所述多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    第一恢复模块，用于从所述多个预编码数据流中恢复出所述至少两个初始空间流；
    第二恢复模块，用于根据所述至少两个初始空间流恢复出所述一原始空间流。
  42. 一种发射端设备，其特征在于，所述发射端设备包括：处理器和发射机，所述处理器与所述发射机耦合，
    所述处理器，用于对多个初始空间流进行预编码，得到多个预编码数据流，所述多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    所述发射机，用于发射所述多个预编码数据流。
  43. 一种接收端设备，其特征在于，所述发射端设备包括：接收机和处理器，所述接收机与所述处理器耦合，
    所述接收机，用于接收多个预编码数据流，所述多个预编码数据流是对多个初始空间流进行预编码得到的，所述多个初始空间流中的至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    所述处理器，用于从所述多个预编码数据流中恢复出所述至少两个初始空间流；
    所述处理器，用于根据所述至少两个初始空间流恢复出所述一原始空间流。
  44. 如权利要求38至43任一所述的方法或设备，其特征在于，
    所述一原始空间流与第一接收端设备相对应。
  45. 如权利要求38至44任一所述的方法或设备，其特征在于，
    所述多个初始空间流中的至少一个初始空间流与第二接收端设备相对应。
  46. 如权利要求38至45任一所述的方法或设备，其特征在于，
    所述多个初始空间流中的至少两个初始空间流是通过对另一原始空间流进行发射分集处理得到的，所述另一原始空间流与第三接收端设备相对应。
  47. 如权利要求38至48任一所述的方法或设备，其特征在于，
    所述发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
  48. 一种数据发送方法，其特征在于，所述方法包括：
    对至少两个初始空间流进行预编码，得到多个预编码数据流，所述至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    发射所述多个预编码数据流。
  49. 一种数据接收方法，其特征在于，所述方法包括：
    接收多个预编码数据流，所述多个预编码数据流是对至少两个初始空间流进行预编码得到的，所述至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    从所述多个预编码数据流中恢复出所述至少两个初始空间流；
    根据所述至少两个初始空间流恢复出所述一原始空间流。
  50. 一种发射端设备，其特征在于，所述发射端设备包括：
    第一预编码模块，用于对至少两个初始空间流进行预编码，得到多个预编码数据流，所述至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    发射模块，用于发射所述多个预编码数据流。
  51. 一种接收端设备，其特征在于，所述接收端设备包括：
    第一接收模块，用于接收多个预编码数据流，所述多个预编码数据流是对至少两个初始空间流进行预编码得到的，所述至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    第一恢复模块，用于从所述多个预编码数据流中恢复出所述至少两个初始空间流；
    第二恢复模块，用于根据所述至少两个初始空间流恢复出所述一原始空间流。
  52. 一种发射端设备，其特征在于，所述发射端设备包括：处理器和发射机，所述处理器与所述发射机耦合，
    所述处理器，用于对至少两个初始空间流进行预编码，得到多个预编码数据流，所述至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    所述发射机，用于发射所述多个预编码数据流。
  53. 一种接收端设备，其特征在于，所述接收端设备包括：接收机和处理器，所述接收机与所述处理器耦合，
    所述接收机，用于接收多个预编码数据流，所述多个预编码数据流是对至少两个初始空间流进行预编码得到的，所述至少两个初始空间流是通过对一原始空间流进行发射分集处理得到的；
    所述处理器，用于从所述多个预编码数据流中恢复出所述至少两个初始空间流；
    所述处理器，用于根据所述至少两个初始空间流恢复出所述一原始空间流。
  54. 如权利要求48至53任一所述的方法或设备，其特征在于，
    所述一原始空间流与第一发射端设备相对应。
  55. 如权利要求48至54任一所述的方法或设备，其特征在于，所述发射分集处理为空时发射分集处理、空频发射分集处理或者空时频发射分集处理。
PCT/CN2017/089022 2016-08-10 2017-06-19 传输方案指示方法、数据传输方法、装置及系统 WO2018028309A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17838440.0A EP3480992A4 (en) 2016-08-10 2017-06-19 METHOD FOR DISPLAYING A TRANSMISSION SCHEME AND DATA TRANSMISSION PROCESS, DEVICE AND SYSTEM
US16/271,367 US10735080B2 (en) 2016-08-10 2019-02-08 Transmission scheme indication method, and data transmission method, apparatus, and system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610652382.5A CN107733592B (zh) 2016-08-10 2016-08-10 传输方案指示方法、数据传输方法、装置及系统
CN201610652382.5 2016-08-10

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/271,367 Continuation US10735080B2 (en) 2016-08-10 2019-02-08 Transmission scheme indication method, and data transmission method, apparatus, and system

Publications (1)

Publication Number Publication Date
WO2018028309A1 true WO2018028309A1 (zh) 2018-02-15

Family

ID=61162652

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/089022 WO2018028309A1 (zh) 2016-08-10 2017-06-19 传输方案指示方法、数据传输方法、装置及系统

Country Status (4)

Country Link
US (1) US10735080B2 (zh)
EP (1) EP3480992A4 (zh)
CN (1) CN107733592B (zh)
WO (1) WO2018028309A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020063563A1 (en) 2018-09-27 2020-04-02 Huawei Technologies Co., Ltd. System and method for control and data channel reliability enhancement using multiple diversity domains
US10742283B2 (en) 2017-07-28 2020-08-11 Qualcomm Incorporated Transmit diversity schemes for uplink sequence transmissions

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10778316B2 (en) * 2018-04-05 2020-09-15 Qualcomm Incorporated Hybrid closed-loop and open-loop multiple-input multiple-output scheme in new radio
WO2019213928A1 (zh) * 2018-05-11 2019-11-14 华为技术有限公司 一种传输方案指示方法和装置
CN110557348B (zh) * 2018-06-01 2020-12-08 成都华为技术有限公司 用于解调数据的方法和通信装置
CN113632406B (zh) * 2019-09-26 2023-07-25 Oppo广东移动通信有限公司 数据传输方式的确定方法、装置、设备及存储介质
WO2021161476A1 (ja) * 2020-02-13 2021-08-19 株式会社Ｎｔｔドコモ 端末及び通信方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011015098A1 (zh) * 2009-08-05 2011-02-10 中兴通讯股份有限公司 一种下行传输方式的指示方法及装置
CN102939786A (zh) * 2010-05-12 2013-02-20 高通股份有限公司 用于无线通信系统中的控制信道配置的系统、装置和方法
CN102957491A (zh) * 2011-08-18 2013-03-06 中兴通讯股份有限公司 一种指示开环传输参数的方法及装置
CN103095350A (zh) * 2011-11-08 2013-05-08 普天信息技术研究院有限公司 一种lte系统中自适应切换传输模式的方法
CN103427885A (zh) * 2012-05-15 2013-12-04 中兴通讯股份有限公司 传输模式的选择方法及装置
EP2892169A2 (en) * 2012-08-31 2015-07-08 LG Electronics Inc. Method and device for receiving downlink signal in wireless communication system

Family Cites Families (145)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7042956B2 (en) 2000-11-06 2006-05-09 Hesham El-Gamal Method and system for utilizing space-time codes for block fading channels
GB0130687D0 (en) * 2001-12-21 2002-02-06 Nokia Corp Parameter estimation for adaptive antenna system
US6862271B2 (en) 2002-02-26 2005-03-01 Qualcomm Incorporated Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
US6850741B2 (en) 2002-04-04 2005-02-01 Agency For Science, Technology And Research Method for selecting switched orthogonal beams for downlink diversity transmission
AU2003289055A1 (en) * 2003-01-24 2004-08-13 Matsushita Electric Industrial Co., Ltd. Line quality report accuracy measurement device and accuracy measurement method
US7336746B2 (en) 2004-12-09 2008-02-26 Qualcomm Incorporated Data transmission with spatial spreading in a MIMO communication system
EP1608099B1 (en) 2004-06-14 2012-08-15 Samsung Electronics Co., Ltd. Adaptive Modulation and Coding (AMC) in a MIMO system
KR100754795B1 (ko) 2004-06-18 2007-09-03 삼성전자주식회사 직교주파수분할다중 시스템에서 주파수 공간 블록 부호의부호화/복호화 장치 및 방법
EP1766806B1 (en) 2004-06-22 2017-11-01 Apple Inc. Closed loop mimo systems and methods
US7894548B2 (en) 2004-09-03 2011-02-22 Qualcomm Incorporated Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system
CN101057417B (zh) 2004-09-03 2013-05-08 高通股份有限公司 用于使用发射分集方案进行空间扩展的设备和方法
US20060093062A1 (en) 2004-11-04 2006-05-04 Samsung Electronics Co., Ltd. Apparatus and method for transmitting and receiving data using space-time block coding
US7627051B2 (en) 2004-11-08 2009-12-01 Samsung Electronics Co., Ltd. Method of maximizing MIMO system performance by joint optimization of diversity and spatial multiplexing
KR100909539B1 (ko) 2004-11-09 2009-07-27 삼성전자주식회사 다중 안테나를 사용하는 광대역 무선 접속 시스템에서 다양한 다중안테나 기술을 지원하기 위한 장치 및 방법
EP1829262B1 (en) 2004-11-16 2018-03-14 QUALCOMM Incorporated Closed-loop rate control for a mimo communication system
KR20060089804A (ko) 2005-02-04 2006-08-09 삼성전자주식회사 다중입출력 시스템을 위한 전송방법
US20060198460A1 (en) 2005-03-03 2006-09-07 Texas Instruments Incorporated Link adaptation for high throughput multiple antenna WLAN systems
US8345732B2 (en) 2005-06-28 2013-01-01 Broadcom Corporation Feedback of channel information in a closed loop beamforming wireless communication system
CN100392998C (zh) 2005-07-06 2008-06-04 哈尔滨工业大学 结合空时分组编码的智能天线下行波束形成方法
US7664194B2 (en) 2005-12-20 2010-02-16 Samsung Electronics Co., Ltd. Combining space time block code (STBC) with spatial multiplexing for MIMO transmission
CN1996785B (zh) 2006-01-06 2012-05-09 华为技术有限公司 宽带无线接入的中转系统及其方法
WO2007084681A1 (en) 2006-01-20 2007-07-26 Atc Technologies, Llc Systems and methods for satellite forward link transmit diversity using orthogonal space coding
US7680206B2 (en) 2006-01-31 2010-03-16 Beceem Communications Inc. Selecting modulation and coding level and spatial rate for orthogonal frequency domain modulation systems
CN100547945C (zh) 2006-03-27 2009-10-07 普天信息技术研究院 一种下行波束赋形的方法及装置
WO2007123376A2 (en) 2006-04-25 2007-11-01 Lg Electronics Inc. A method of transmitting data by utilizing resources in hybrid automatic request operations
US9806785B2 (en) 2006-04-28 2017-10-31 Apple Inc. Rank adaptive transmission methods and apparatuses
CN101115045B (zh) 2006-07-28 2010-05-19 华为技术有限公司 一种多天线发射方法及装置
US7944985B2 (en) 2006-08-24 2011-05-17 Interdigital Technology Corporation MIMO transmitter and receiver for supporting downlink communication of single channel codewords
KR100869070B1 (ko) * 2006-10-16 2008-11-17 삼성전자주식회사 다중 입력 다중 출력 시스템의 빔 형성 장치 및 방법
JP2008118650A (ja) 2006-10-31 2008-05-22 Ntt Docomo Inc 循環遅延ダイバーシティ遅延値の確定方法、システム、基地局及びｕｅ
EP1928115A1 (en) 2006-11-30 2008-06-04 Nokia Siemens Networks Gmbh & Co. Kg Adaptive modulation and coding in a SC-FDMA system
US8040959B2 (en) 2006-12-11 2011-10-18 Texas Instruments Incorporated Dynamic resource allocation to improve MIMO detection performance
CN101563861A (zh) 2006-12-19 2009-10-21 高通股份有限公司 波束空时编码和发送分集
CN101232478A (zh) 2007-01-25 2008-07-30 华为技术有限公司 选择配对数据流及对应预编码向量的方法及设备
US8379738B2 (en) 2007-03-16 2013-02-19 Samsung Electronics Co., Ltd. Methods and apparatus to improve performance and enable fast decoding of transmissions with multiple code blocks
US20080232493A1 (en) 2007-03-19 2008-09-25 Interdigital Technology Corporation Combined precoding vector switch and frequency switch transmit diversity for secondary synchronization channel in evolved utra
EP1973238B1 (en) 2007-03-21 2011-03-02 Alcatel Lucent Method for determining MIMO transmission techniques, base station and mobile terminal
CN101291164B (zh) 2007-04-17 2013-06-26 大唐移动通信设备有限公司 智能天线的波束赋形方法及基带信号处理器
KR100913090B1 (ko) 2007-06-13 2009-08-21 엘지전자 주식회사 통신 시스템에서 확산 신호를 송신하는 방법
US8009758B2 (en) 2007-06-20 2011-08-30 Samsung Electronics Co., Ltd Apparatus and method for channel-interleaving and channel-deinterleaving data in a wireless communication system
US8160177B2 (en) 2007-06-25 2012-04-17 Samsung Electronics Co., Ltd. Transmit methods with delay diversity and space-frequency diversity
CN101378299B (zh) 2007-08-28 2012-05-09 中兴通讯股份有限公司 一种基于空频编码的发射分集方法
US8320486B2 (en) 2007-09-28 2012-11-27 Apple Inc. Retransmission method for HARQ in MIMO systems
US8553624B2 (en) 2007-10-10 2013-10-08 Samsung Electronics Co., Ltd. Asynchronous hybrid ARQ process indication in a MIMO wireless communication system
US8031175B2 (en) 2008-04-21 2011-10-04 Panasonic Corporation Touch sensitive remote control system that detects hand size characteristics of user and adapts mapping to screen display
KR100969147B1 (ko) * 2007-11-29 2010-07-08 한국전자통신연구원 협력 수신 다이버시티 동작 방법, 선택적 협력 통신 방법및 시스템
RU2452129C2 (ru) 2008-01-14 2012-05-27 Телефонактиеболагет Лм Эрикссон (Пабл) Разомкнутый прекодирующий цикл в mimo-связи
CN101505205A (zh) 2008-02-05 2009-08-12 夏普株式会社 基于波达方向的开环mimo方法、基站及用户设备
US8144797B2 (en) 2008-03-25 2012-03-27 Intel Mobile Communications GmbH CQI table for wireless MIMO networks
KR101507835B1 (ko) 2008-05-08 2015-04-06 엘지전자 주식회사 다중 안테나 시스템에서 전송 다이버시티 방법
KR101527009B1 (ko) 2008-07-11 2015-06-18 엘지전자 주식회사 다중 셀 기반에서 멀티-셀 ｍｉｍｏ 적용 방법
WO2010015127A1 (en) 2008-08-07 2010-02-11 Huawei Technologies Co., Ltd. Method for transmit diversity encoding
WO2010018690A1 (ja) 2008-08-12 2010-02-18 パナソニック株式会社 基地局装置および端末装置
CN101771648B (zh) 2009-01-06 2018-03-23 中兴通讯股份有限公司 一种多天线信号处理系统及方法
US9071310B2 (en) * 2009-01-12 2015-06-30 Qualcomm Incorporated Method and apparatus for enabling multiple transmission modes in a wireless communication system
US8451932B2 (en) 2009-02-23 2013-05-28 Texas Instruments Incorporated Precoding codebook design for single user MIMO
US20100232535A1 (en) 2009-03-04 2010-09-16 Nec Laboratories America, Inc. Apparatus and Method for Multilayer Space-Time-Frequency Precoding for a MIMO-OFDM Wireless Transmission System
JP5583115B2 (ja) 2009-03-10 2014-09-03 シャープ株式会社 無線通信システム、無線送信装置および無線送信装置の制御プログラム
CN101860948B (zh) 2009-04-13 2014-07-30 华为技术有限公司 功耗调节的方法、设备及系统
US9178658B2 (en) 2009-05-06 2015-11-03 Futurewei Technologies, Inc. System and method for channel interleaver and layer mapping in a communications system
WO2010137866A2 (ko) 2009-05-26 2010-12-02 엘지전자 주식회사 무선 통신 시스템에서 안테나 정보를 획득하는 방법 및 장치
US8260356B2 (en) * 2009-06-18 2012-09-04 Samsung Electronics Co., Ltd. Method and system for indicating method used to scramble dedicated reference signals
JP2011004161A (ja) 2009-06-18 2011-01-06 Sharp Corp 通信システム、通信装置および通信方法
US8923143B2 (en) 2009-06-29 2014-12-30 Qualcomm Incorporated Open loop channel reporting in a wireless communication system
WO2011011566A2 (en) * 2009-07-24 2011-01-27 Interdigital Patent Holdings, Inc. Method and apparatus for obtaining demodulation reference signal port index information
US20110194504A1 (en) * 2009-08-12 2011-08-11 Qualcomm Incorporated Method and apparatus for supporting single-user multiple-input multiple-output (su-mimo) and multi-user mimo (mu-mimo)
CN101997655A (zh) 2009-08-20 2011-03-30 富士通株式会社 用于实现下行多输入多输出传输的方法和装置
CN101997649B (zh) 2009-08-21 2014-12-10 中兴通讯股份有限公司 一种基于正交分集的mu-mimo处理方法和装置
US20120202545A1 (en) 2009-10-09 2012-08-09 Kyocera Corporation Communication system, radio base station, and communication control method
US8675794B1 (en) 2009-10-13 2014-03-18 Marvell International Ltd. Efficient estimation of feedback for modulation and coding scheme (MCS) selection
US8917796B1 (en) 2009-10-19 2014-12-23 Marvell International Ltd. Transmission-mode-aware rate matching in MIMO signal generation
KR101627393B1 (ko) 2009-11-02 2016-06-03 주식회사 팬택자산관리 무선 통신 시스템에서의 신호를 전송하기 위한 방법 및 그 송신부, 그 수신부
KR20110073932A (ko) * 2009-12-24 2011-06-30 주식회사 하이닉스반도체 Ｅｃｃ 회로를 포함하는 반도체 스토리지 시스템 및 그 제어 방법
EP2528244B1 (en) 2010-01-22 2018-03-07 LG Electronics Inc. Method and apparatus for providing downlink control information in an mimo wireless communication system
CN102763358B (zh) 2010-01-22 2015-04-01 夏普株式会社 发送装置、接收装置、通信系统以及通信方法
KR101782647B1 (ko) 2010-01-28 2017-09-28 엘지전자 주식회사 무선 통신 시스템에서 상향링크 제어 정보 인코딩 방법 및 장치
KR101053635B1 (ko) 2010-01-28 2011-08-03 엘지전자 주식회사 다중 안테나 무선 통신 시스템에서 기지국이 릴레이 노드로 제어 신호를 송신하는 방법 및 이를 위한 장치
KR101606799B1 (ko) 2010-02-22 2016-04-11 엘지전자 주식회사 분산 안테나 시스템에서의 신호 전송 방법
CN102195697B (zh) 2010-03-19 2015-01-28 中兴通讯股份有限公司 多输入多输出波束赋形系统及其数据发送方法
US8213873B2 (en) 2010-04-09 2012-07-03 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for channel quality reporting in a wireless communication system
KR101606803B1 (ko) 2010-04-29 2016-03-28 엘지전자 주식회사 제어정보의 전송방법 및 기지국과, 제어정보의 수신방법 및 사용자기기
JP5291664B2 (ja) 2010-04-30 2013-09-18 株式会社エヌ・ティ・ティ・ドコモ データ送信方法、基地局装置及び移動局装置
US8891387B2 (en) * 2010-05-03 2014-11-18 Qualcomm Incorporated UE based conditional enabling of ULTD
JP2011254171A (ja) 2010-05-31 2011-12-15 Sharp Corp 通信システム、送信装置、送信制御方法、送信制御プログラム、及びプロセッサ
CN101895990B (zh) 2010-06-13 2013-04-24 华为技术有限公司 无线接入方法、设备和系统
CN102291726B (zh) 2010-06-17 2015-01-14 重庆无线绿洲通信技术有限公司 一种无线网络干扰消除方法
US9124325B2 (en) 2010-06-21 2015-09-01 Panasonic Intellectual Property Corporation Of America Terminal apparatus, base station apparatus, retransmission method and resource allocation method
JP2012010205A (ja) 2010-06-25 2012-01-12 Sharp Corp 通信システム、通信装置および通信方法
US8411784B2 (en) 2010-07-19 2013-04-02 King Fahd University Of Petroleum And Minerals Multi-configuration adaptive layered steered space-time coded system and method
KR101835326B1 (ko) 2010-09-26 2018-03-07 엘지전자 주식회사 다중 안테나 지원 무선 통신 시스템에서 효율적인 피드백 방법 및 장치
KR101752824B1 (ko) 2010-09-29 2017-06-30 삼성전자주식회사 다중 입출력 통신 시스템에서의 피드백 방법 및 장치
JP5690850B2 (ja) 2010-11-26 2015-03-25 エルジー エレクトロニクス インコーポレイティド 無線ｌａｎシステムではリンク適応に基づいて、チャネル情報を報告する方法とそれをサポートするデバイス
US9236925B2 (en) * 2010-12-22 2016-01-12 Lg Electronics Inc. Method and apparatus of link adaptation in a wireless local area network system
CN102064870A (zh) 2010-12-30 2011-05-18 中兴通讯股份有限公司 数据发送方法及装置
US8675558B2 (en) 2011-01-07 2014-03-18 Intel Corporation CQI definition for transmission mode 9 in LTE-advanced
CN102595469B (zh) 2011-01-12 2016-11-16 中兴通讯股份有限公司 一种信道质量指示信息的确定方法
WO2012129798A1 (en) 2011-03-30 2012-10-04 Huawei Technologies Co., Ltd. Method and apparatus for open loop transmission in a multiple antenna wireless communication system
EP2509364B1 (en) * 2011-04-08 2013-12-11 Alcatel Lucent Transmission method and mobile station to carry out the method
TW201705698A (zh) 2011-04-29 2017-02-01 內數位專利控股公司 開茴路空間處理
US8830815B2 (en) 2011-05-19 2014-09-09 Qualcomm Incorporated Preamble design for television white space transmissions
CN102843209B (zh) 2011-06-22 2015-09-30 华为技术有限公司 传输控制信令的方法和装置
CN102857458B (zh) 2011-06-30 2018-01-02 中兴通讯股份有限公司 导频符号确定方法及装置
US9232529B2 (en) 2011-07-01 2016-01-05 Telefonaktiebolaget L M Ericsson (Publ) Node and method for transmission mode switching for downlink transmission in downlink channel
US20130177115A1 (en) 2011-07-05 2013-07-11 Qualcomm Incorporated Systems and methods for addressing doppler effect in wireless communications systems
ES2425468B1 (es) 2011-07-13 2014-04-30 Telefónica, S.A. Método para optimizar la asignación de potencia de flujos de usuario transmitidos desde estaciones base en sistemas de transmisión de estación base coordinada
US9374203B2 (en) * 2011-07-14 2016-06-21 Lg Electronics Inc. Method and device for allocating multi transmission timing to at least one timing advance group in a wireless access system for supporting carrier aggregation
CN102892083B (zh) * 2011-07-18 2016-01-20 普天信息技术有限公司 一种集群组呼中数据的传输方法
JP2013038666A (ja) 2011-08-10 2013-02-21 Sharp Corp 端末装置、基地局装置、プログラムおよび集積回路
US20130083681A1 (en) * 2011-09-30 2013-04-04 Research In Motion Limited Methods of Channel State Information Feedback and Transmission in Coordinated Multi-Point Wireless Communications System
CN102299769B (zh) 2011-09-01 2014-06-25 电信科学技术研究院 一种下行控制信息传输方法及装置
US20130064216A1 (en) 2011-09-12 2013-03-14 Research In Motion Limited DMRS Association and Signaling for Enhanced PDCCH in LTE Systems
CN103718491B (zh) 2011-09-19 2016-09-21 富士通株式会社 数据传输方法、系统、发射机和接收机
US8654816B2 (en) 2011-10-18 2014-02-18 Telefonaktiebolaget L M Ericsson (Publ) Methods and devices for determining a transmission rank
WO2013058569A2 (ko) 2011-10-18 2013-04-25 엘지전자 주식회사 프리앰블을 이용한 프레임 타입 지시 방법 및 장치
US9723496B2 (en) 2011-11-04 2017-08-01 Qualcomm Incorporated Method and apparatus for interference cancellation by a user equipment using blind detection
AU2012337546B2 (en) 2011-11-16 2017-01-05 Samsung Electronics Co., Ltd. Method and apparatus for transmitting control information in wireless communication systems
CN102412885B (zh) 2011-11-25 2015-05-06 西安电子科技大学 Lte中的三维波束赋形方法
CN103166688B (zh) 2011-12-14 2015-08-26 深圳信息职业技术学院 一种预编码的实现方法、装置及mimo系统
JP5926402B2 (ja) 2012-01-17 2016-05-25 エルジー エレクトロニクス インコーポレイティド 無線通信システムにおけるアップリンク制御情報転送方法及び装置
US8908784B2 (en) 2012-01-30 2014-12-09 Telefonaktiebolaget L M Ericsson (Publ) Methods of communicating data including symbol mapping/demapping and related devices
US9526091B2 (en) 2012-03-16 2016-12-20 Intel Corporation Method and apparatus for coordination of self-optimization functions in a wireless network
US10027391B2 (en) 2012-04-12 2018-07-17 Nokia Technologies Oy Transmit diversity on a control channel without additional reference signals
CN103384161B (zh) 2012-05-02 2018-02-06 华为技术有限公司 Mimo无线通信系统、传输方法和装置
WO2013168958A1 (ko) 2012-05-07 2013-11-14 엘지전자 주식회사 하향링크 데이터 수신 방법 및 사용자기기와 하향링크 데이터 전송 방법 및 기지국
JP6190889B2 (ja) 2012-11-09 2017-08-30 インターデイジタル パテント ホールディングス インコーポレイテッド ビーム形成方法およびビームを使用するための方法
CN103973409A (zh) 2013-01-31 2014-08-06 富士通株式会社 预编码装置和包含该预编码装置的发射机
US9143212B2 (en) 2013-02-25 2015-09-22 Texas Instruments Incorporated Codebook sub-sampling for CSI feedback on PUCCH for 4Tx MIMO
CN104079384B (zh) 2013-03-27 2017-10-17 华为技术有限公司 多天线系统的数据传输方法和设备
KR102201755B1 (ko) 2013-06-25 2021-01-12 엘지전자 주식회사 무선 통신 시스템에서 적응적 안테나 스케일링을 위한 프리코딩 방법 및 이를 위한 장치
EP3029868B1 (en) 2013-09-04 2019-12-04 Huawei Technologies Co., Ltd. Channel measurement terminal device
EP3062452B1 (en) * 2013-10-22 2019-12-04 LG Electronics Inc. Method and apparatus for transmitting physical downlink control channel in wireless access system supporting machine-type communication
US9806926B2 (en) 2013-11-04 2017-10-31 Samsung Electronics Co., Ltd. Multistage beamforming of multiple-antenna communication system
CN105850171A (zh) 2014-04-18 2016-08-10 华为技术有限公司 一种自适应多天线数据传输方法、装置及系统
CN106575989A (zh) 2014-07-31 2017-04-19 华为技术有限公司 数据传输的方法和装置
US9648631B1 (en) * 2014-08-06 2017-05-09 Sprint Spectrum L.P. Systems and methods for determining a transmission scheme for a broadcast
US9882623B2 (en) 2014-09-18 2018-01-30 Qualcomm Incorporated Dual thread feedback design for non-orthogonal channels
WO2016041196A1 (zh) 2014-09-19 2016-03-24 华为技术有限公司 一种多用户的复用方法和基站以及用户终端
US9923666B2 (en) 2014-10-01 2018-03-20 Qualcomm, Incorporated Encoding in uplink multi-user MIMO and OFDMA transmissions
KR102381442B1 (ko) 2015-01-23 2022-04-01 삼성전자주식회사 간섭 제거를 위한 전송모드 블라인드 검출 기법
US20160295426A1 (en) 2015-03-30 2016-10-06 Nokia Solutions And Networks Oy Method and system for communication networks
CN104959503B (zh) * 2015-05-23 2016-08-24 锦州捷通铁路机械制造有限公司 现代轨道低地板动车大型整体锻造轴桥的制备工艺
US10200999B2 (en) 2016-02-18 2019-02-05 Samsung Electronics Co., Ltd. Method and apparatus for blind detection of interference parameters in LTE system
CN108781100B (zh) 2016-03-10 2021-06-22 华为技术有限公司 一种传输分集方法、设备及系统
CN107733492B (zh) 2016-08-10 2020-09-04 华为技术有限公司 数据发送、接收方法和装置
CN110224727A (zh) 2016-08-12 2019-09-10 华为技术有限公司 数据发送方法、信令发送方法、装置及系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011015098A1 (zh) * 2009-08-05 2011-02-10 中兴通讯股份有限公司 一种下行传输方式的指示方法及装置
CN102939786A (zh) * 2010-05-12 2013-02-20 高通股份有限公司 用于无线通信系统中的控制信道配置的系统、装置和方法
CN102957491A (zh) * 2011-08-18 2013-03-06 中兴通讯股份有限公司 一种指示开环传输参数的方法及装置
CN103095350A (zh) * 2011-11-08 2013-05-08 普天信息技术研究院有限公司 一种lte系统中自适应切换传输模式的方法
CN103427885A (zh) * 2012-05-15 2013-12-04 中兴通讯股份有限公司 传输模式的选择方法及装置
EP2892169A2 (en) * 2012-08-31 2015-07-08 LG Electronics Inc. Method and device for receiving downlink signal in wireless communication system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3480992A4

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10742283B2 (en) 2017-07-28 2020-08-11 Qualcomm Incorporated Transmit diversity schemes for uplink sequence transmissions
WO2020063563A1 (en) 2018-09-27 2020-04-02 Huawei Technologies Co., Ltd. System and method for control and data channel reliability enhancement using multiple diversity domains
CN112715011A (zh) * 2018-09-27 2021-04-27 华为技术有限公司 使用多个分集域增强控制和数据信道可靠性的系统和方法
EP3847773A4 (en) * 2018-09-27 2021-10-27 Huawei Technologies Co., Ltd. SYSTEM AND METHOD FOR CONTROLLING AND IMPROVING DATA CHANNEL RELIABILITY USING MULTIPLE FIELDS OF DIVERSITY
CN112715011B (zh) * 2018-09-27 2022-10-18 华为技术有限公司 用于数据重复的设备和方法

Also Published As

Publication number Publication date
EP3480992A1 (en) 2019-05-08
US20190173559A1 (en) 2019-06-06
CN107733592A (zh) 2018-02-23
US10735080B2 (en) 2020-08-04
EP3480992A4 (en) 2019-07-03
CN107733592B (zh) 2020-11-27

Similar Documents

Publication Publication Date Title
WO2018028309A1 (zh) 传输方案指示方法、数据传输方法、装置及系统
US10027391B2 (en) Transmit diversity on a control channel without additional reference signals
EP3365984B1 (en) Dynamic precoding of shared reference signals
US20140153488A1 (en) Interference cancellation
EP2813021A2 (en) Shared ack/nack messages
AU2011235027A1 (en) System and methods for HSDPA multi-user MIMO operation
WO2009023379A9 (en) Techniques for reducing precoding overhead in a multiple-input multiple-output wireless communication system
CN107733492B (zh) 数据发送、接收方法和装置
WO2021143639A2 (en) Method and device in a node used for wireless communication
US11128364B2 (en) Method and device for wireless communication in UE and base station
WO2018196589A1 (zh) 数据发送方法、数据接收方法、网络设备和终端设备
CN114513289B (zh) 一种被用于无线通信的节点中的方法和装置
WO2018054188A1 (zh) 数据发送方法、数据接收方法、设备及系统、存储介质
CN114465699A (zh) 一种被用于无线通信的用户设备、基站中的方法和装置
CN115412220A (zh) 一种被用于无线通信的节点中的方法和装置
WO2018036246A1 (zh) 数据发送方法、数据接收方法、设备及系统
CN113541891B (zh) 一种被用于无线通信的节点中的方法和装置
CN113133121B (zh) 一种被用于无线通信的节点中的方法和装置
Kadhem et al. Performance Evaluation of Channel Equalizer Techniques in LTE-Advanced under Vehicular Environments
WO2011072553A1 (zh) 一种多用户复用方法及发射装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17838440

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017838440

Country of ref document: EP

Effective date: 20190130

NENP Non-entry into the national phase

Ref country code: DE