WO2016015282A1 - 数据传输的方法和装置 - Google Patents

数据传输的方法和装置 Download PDF

Info

Publication number
WO2016015282A1
WO2016015282A1 PCT/CN2014/083421 CN2014083421W WO2016015282A1 WO 2016015282 A1 WO2016015282 A1 WO 2016015282A1 CN 2014083421 W CN2014083421 W CN 2014083421W WO 2016015282 A1 WO2016015282 A1 WO 2016015282A1
Authority
WO
WIPO (PCT)
Prior art keywords
precoding
data
beam feature
feature information
user equipment
Prior art date
Application number
PCT/CN2014/083421
Other languages
English (en)
French (fr)
Inventor
乔德礼
吴晔
王磊
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 PCT/CN2014/083421 priority Critical patent/WO2016015282A1/zh
Priority to EP14898368.7A priority patent/EP3197067A4/en
Priority to JP2017505091A priority patent/JP2017528960A/ja
Priority to BR112017001923A priority patent/BR112017001923A2/pt
Priority to KR1020177004648A priority patent/KR20170032444A/ko
Priority to CN201480080884.4A priority patent/CN106575989A/zh
Publication of WO2016015282A1 publication Critical patent/WO2016015282A1/zh
Priority to US15/419,595 priority patent/US20170141829A1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/068Diversity 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 using space frequency diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0891Space-time diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/02Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618Space-time coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/16Threshold monitoring
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal

Definitions

  • Embodiments of the present invention relate to communication technologies, and in particular, to a data transmission method and apparatus. Background technique
  • MMIMO Massive Multiple-Input Multiple-Output
  • the prior art adopts a multi-antenna transmission scheme of Space-Time Block Code (STBC), and combines channel statistics and channel characteristic information to perform antennas. Select and perform STBC data transmission on the selected antenna.
  • STBC Space-Time Block Code
  • Embodiments of the present invention provide a data transmission method and apparatus, to implement adaptive adjustment of a precoding method, to make data transmission of an MMIMO antenna system more robust, and improve system performance and antenna gain.
  • the data transmission in the embodiment of the present invention includes transmitting data and receiving data.
  • an embodiment of the present invention provides a method for sending data, including:
  • the precoding includes a space-time precoding method or a space frequency based precoding method;
  • the pre-coded data to be transmitted is sent to the user equipment.
  • the method further includes: sending the beam feature information to the user equipment, so that the user equipment determines a data recovery method according to the beam feature information, where The method of data recovery corresponds to the precoding method.
  • the performing beam feature design according to the uplink data or pilot, and generating beam feature information including:
  • the determining, by the diagonal matrix, the beam characteristic information that meets a preset energy threshold includes:
  • the method further includes:
  • the performing the beam feature design according to the uplink data or the pilot, and generating a precoding parameter combination vector including:
  • the performing pre-coding processing according to the determining the pre-coding manner including :
  • an embodiment of the present invention provides a method for receiving data, including:
  • an apparatus for sending data including:
  • a receiving module configured to receive uplink data or a pilot that is sent by the user equipment by using an uplink subframe
  • a precoding parameter combination generating module configured to perform beam feature design according to the uplink data or a pilot, to generate beam feature information
  • a precoding processing module configured to determine a precoding manner according to the beam feature information, and perform precoding processing on the data to be sent according to the determined precoding manner, where the precoding method includes a space time based precoding method or based on Space-frequency precoding method;
  • a sending module configured to send the pre-coded data to be sent to the user equipment.
  • the sending module is further configured to send the beam feature information to the user equipment, so that the user equipment is configured according to the beam feature
  • the information determines a method of data recovery, and the method of data recovery corresponds to the precoding method.
  • the pre-coding parameter combination generating module is specifically configured to use the uplink data or the Estimating the location of the user equipment; constructing an antenna steering vector matrix according to the location of the user equipment; performing singular value decomposition on the antenna steering vector matrix to obtain a diagonal matrix; determining according to the diagonal matrix The beam characteristic information that satisfies a preset energy threshold.
  • the precoding parameter combination generating module is specifically configured to calculate a main diagonal of the diagonal matrix The ratio of the sum of the largest n elements on the sum of all the elements on the main diagonal; when the ratio is greater than the preset energy threshold, determining that the corresponding n is the beam characteristic information, n For natural numbers.
  • the pre-coding parameter combination generating module is further configured to perform, according to the uplink data or The beam feature design is performed at a frequency to generate a precoding parameter combination vector.
  • the pre-coding parameter combination generating module is specifically configured to perform, according to the beam feature information and the antenna guiding The vector matrix obtains the precoding parameter combination vector.
  • the pre-coding processing module is specifically configured to use the determined pre-coding method and The precoding parameter combination vector performs precoding processing on the to-be-sent data.
  • an apparatus for receiving data including:
  • a receiving module configured to receive beam feature information sent by the base station, where the beam feature information is generated by the base station to perform beam feature design according to uplink data or pilot;
  • a data recovery method determining module configured to determine a data recovery method according to a correspondence between the beam feature information and a data recovery method
  • the receiving module is further configured to receive pre-coded data sent by the base station;
  • a data processing module configured to perform data recovery processing on the pre-encoded data according to the data recovery method.
  • the method for recovering the data determined by the data recovery method determining module corresponds to a precoding manner determined by the base station according to the beam feature information.
  • the beam feature design is performed according to the real-time channel condition, the beam feature information is obtained, and the pre-coding mode based on space-time or space-frequency is determined, and the data to be sent after the pre-coding is processed and sent
  • adaptive adjustment of the precoding method is implemented, which makes the data transmission of the MMIMO antenna system more robust, and improves system performance and antenna gain.
  • 1 is a flow chart of an embodiment of a method for transmitting data according to the present invention
  • 2 is a schematic diagram of data transmission
  • FIG. 3 is a flow chart of an embodiment of a method for receiving data according to the present invention.
  • Embodiment 4 is a schematic structural diagram of Embodiment 1 of an apparatus for transmitting data according to the present invention
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of an apparatus for receiving data according to the present invention.
  • Embodiment 2 is a schematic structural diagram of Embodiment 2 of an apparatus for transmitting data according to the present invention
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of an apparatus for receiving data according to the present invention. detailed description
  • the STBC multi-antenna transmission scheme combines channel statistics and channel characteristic information for antenna selection and STBC data transmission on selected antennas.
  • the beam width formed by this method will be narrow, because there is no beam feature design, in the direction of arrival
  • DOA Direction Of Arrival
  • FIG. 1 is a flowchart of an embodiment of a method for transmitting data according to the present invention. As shown in FIG. 1, the method in this embodiment may include:
  • Step 101 Receive uplink data or a pilot that is sent by the user equipment by using an uplink subframe.
  • the executor of this embodiment may be a base station that supports an MMIMO antenna system.
  • UE User Equipment
  • UE can be a mobile phone, a cordless phone, a computer device, a fax device, or other device that can communicate with a base station.
  • Step 102 Perform beam feature design according to the uplink data or pilot to generate a beam feature.
  • the base station performs beam feature design in real time according to the uplink data or the pilot to generate beam feature information, where the beam feature information reflects the number of virtual antennas used to transmit data to the UE in the current channel, and the number of virtual antennas has the highest or Higher energy ensures antenna gain in multi-antenna systems.
  • Step 103 Determine a precoding manner according to the beam feature information, and perform precoding processing on the data to be sent according to the determined precoding manner, where the precoding method includes a space-time precoding method or a space frequency based method. Precoding method;
  • the base station can store the correspondence between the beam feature information and the precoding mode.
  • the beam characteristic information is 2, and the determined number of virtual antennas for transmitting data to the UE is 2.
  • the base station determines the precoding corresponding to the beam feature information when the beam feature information is 2 according to the correspondence between the beam feature information and the precoding mode.
  • the mode is STBC (such as Alamouti code), and then the base station performs precoding processing on the data to be transmitted according to the Alamouti code.
  • Step 104 Send pre-coded data to be sent to the user equipment.
  • the base station sends the pre-coded data to be sent to the UE, so that the UE performs recovery processing on the received data according to the data recovery method.
  • the data recovery method here corresponds to the precoding mode of the base station, for example, the base station passes the Alamouti code.
  • the precoding of the data to be transmitted, the UE also recovers the data by a method corresponding to the Alamouti code.
  • the beam feature information used to determine the precoding mode in this embodiment is designed according to the channel condition.
  • the precoding mode can be flexibly adjusted according to the actual situation of the channel, which makes the data transmission of the MMIMO antenna system more robust.
  • the performance of the communication system and the gain of the antenna are improved.
  • the method further includes: sending the beam feature information to the user equipment, so that the user equipment determines a data recovery method according to the beam feature information, The method of data recovery corresponds to the precoding method.
  • the base station may pass the physical downlink control channel.
  • PDCCH Physical Downlink Control Channel
  • RE Resource Element
  • the step 102 of the foregoing method embodiment performs the beam feature design according to the uplink data or the pilot to generate the beam feature information
  • the specific implementation method may be: estimating the user equipment according to the uplink data or the pilot. Positioning the antenna steering vector matrix according to the location of the user equipment; performing singular value decomposition on the antenna steering vector matrix to obtain a diagonal matrix; determining, according to the diagonal matrix, that the preset energy threshold is met The beam characteristic information.
  • the determining, by the diagonal matrix, the beam characteristic information that meets the preset energy threshold the specific implementation method may be: calculating a sum of the largest n elements on the main diagonal of the diagonal matrix. Description a ratio of sums of all elements on the main diagonal; when the ratio is greater than the preset energy threshold, determining that the corresponding n is the beam characteristic information, and n is a natural number.
  • the base station performs beam feature design according to the uplink data or the pilot to generate the beam feature information, and may have multiple implementation manners, as long as the virtual antenna with the largest energy relative to the UE can be found from the multiple virtual antennas, and Data transmission on the virtual antenna can increase the antenna gain.
  • the base station performs beam feature design according to the uplink data or pilot.
  • the precoding parameter combination vector may also be generated.
  • the specific implementation method may be: And acquiring the precoding parameter combination vector according to the beam feature information and the antenna steering vector matrix.
  • the estimating, by the base station, the location of the user equipment according to the uplink data or the pilot may be implemented in the following manner: For example, the base station estimates the position angle of the UE by using the DOA according to the uplink data or the pilot, and determines an angle range according to the position angle.
  • may be - or may be, ⁇ may be + ⁇ 0, which is a preset value.
  • the angle range can be obtained by any known method, which is not specifically limited herein.
  • Performing singular value decomposition on the antenna steering vector matrix, and obtaining the diagonal matrix can be implemented as follows: For example, performing singular value decomposition on the antenna steering vector matrix C (Singular Value o,
  • Determining, according to the diagonal matrix, the beam characteristic information that meets the preset energy threshold may be implemented as follows: For example, determining beam characteristic information that meets a preset energy threshold according to the diagonal matrix ,, that is, calculating a diagonal matrix ⁇ The sum of the largest m elements on the main diagonal and the main diagonal The ratio of the sum of all the elements, when the ratio is greater than the preset energy threshold, determines that the corresponding m value is beam characteristic information.
  • the sum of all the elements on the main diagonal of the diagonal matrix ⁇ is calculated, and the elements are sorted from large to small, and the sum of m elements is sequentially obtained, m is incremented from 2, and each time is sought And the result is compared with the sum of all the elements, and the ratio is compared with the preset energy threshold until the ratio is greater than the preset energy threshold, and the corresponding m value is the beam characteristic information.
  • the energy of the virtual antenna corresponding to the m elements from large to small can satisfy the data transmission requirement, and the space-time or space-frequency precoding method is determined according to the m value. For example, when the m value is 2, the STBC is determined to be adopted.
  • Precoding such as Alamouti code
  • the matrix performs singular value decomposition, and the diagonal matrix is obtained as follows:
  • determining the beam characteristic information that meets the preset energy threshold is specifically: determining beam characteristic information that meets a preset energy threshold according to the diagonal matrix ,, that is, calculating a maximum m on a main diagonal of the diagonal matrix ⁇
  • the ratio of the sum of the elements to the sum of all the elements on the main diagonal determines that the corresponding m is the beam characteristic information.
  • k is an odd conjugate vector.
  • the base station can generate the beam characteristic information m and the precoding parameter combination vector W by using the above two examples, and then determine the precoding method based on the space time or the space frequency according to the m value. For example, when the m value is 2, the precoding mode is determined as STBC. (e.g. Alamouti code), then (Wl, w 2) data to be sent according to the STBC precoding (e.g. Alamouti code) mode and a pre-encoding parameter combining vector.
  • the base station performs space-time or space-frequency based precoding processing on the data to be transmitted according to the beam characteristic information m and the precoding parameter combination vector, and each precoding vector is equivalent to one virtual antenna.
  • the pre-coded data is transmitted through all physical antennas.
  • H the channel response direction
  • the data to be transmitted is sent to the UE, and the beam feature information is sent to the UE through the PDCCH.
  • the UE In order to enable the UE to receive data and recover data, the UE needs to know the corresponding corresponding to the virtual antenna.
  • the base station needs to transmit the corresponding demodulation reference signal (Demodulation Reference Signal, DMRS) pilot for the space-time or space-frequency precoding method and the precoding parameter combination vector.
  • DMRS Demodulation Reference Signal
  • FIG. 3 is a flowchart of a method for receiving data according to the present invention. As shown in FIG. 3, the method in this embodiment may include:
  • Step 201 Receive beam characteristic information sent by a base station.
  • the execution body of this embodiment may be a UE supporting an MMIMO antenna system.
  • the UE receives the beam feature information sent by the base station, and the beam feature information is generated by the base station performing beam feature design according to the uplink data or the pilot.
  • Step 202 Determine a method for data recovery according to the beam feature information.
  • the method of data recovery corresponds to a precoding manner determined by the base station based on the beam characteristic information.
  • the correspondence between the beam feature information and the precoding mode may be saved in the UE, so that the precoding mode adopted by the data received from the base station may be determined according to the beam feature information, and further determined and determined.
  • the method for data recovery corresponding to the precoding method for example, the decoding mode
  • the subsequent UE will use the data recovery method to recover the received data (the data pre-coded by the base station).
  • the UE may directly save the correspondence between the beam feature information and the data recovery method (eg, the decoding mode). After receiving the beam characteristic information, the UE may obtain corresponding data recovery according to the corresponding relationship. Methods.
  • Step 203 Receive pre-coded data sent by the base station, and perform data recovery processing on the pre-coded data according to the data recovery method.
  • the UE After receiving the beam feature information sent by the base station, the UE combines the corresponding multiple
  • the RE receives the data, and the number of the specific combined RE and the beam characteristic information are equal.
  • the RE includes two dimensions, the time domain and the frequency domain. If the wireless system is pre-configured with space-time coding, it indicates that the base station is pre-coded. The data is respectively carried on multiple consecutive REs (for example, as shown in FIG. 2). If the wireless system is pre-configured with space-frequency coding, it indicates that the base station carries the pre-encoded data in multiple REs of consecutive frequency bands.
  • the value of m will affect the demodulation performance of the final UE.
  • the value of the change in the beam width of the multi-antenna transmission device may vary, and when the number of antennas changes, The value of m is also different.
  • the change of the m value brings about a change in the precoding method, and the manner in which the combined RE performs data transmission will also change accordingly.
  • Multi-antenna transmission device based on real-time channel conditions The beam feature design is carried out, and according to the beam feature design, which precoding method is used to transmit data to the UE, thereby realizing the adaptive adjustment of the precoding method, making the data transmission of the MMIMO antenna system more robust and improving the communication. System performance and antenna gain.
  • the apparatus in this embodiment may include: a receiving module 11, a precoding parameter combination generating module 12, a precoding processing module 13, and a sending module.
  • the receiving module 11 is configured to receive uplink data or a pilot that is sent by the user equipment by using an uplink subframe.
  • the precoding parameter combination generating module 12 is configured to perform beam feature design according to the uplink data or pilot to generate a beam.
  • the precoding processing module 13 is configured to determine a precoding manner according to the beam feature information, and perform precoding processing on the data to be sent according to the determined precoding manner, where the precoding method includes a pre-algorithm based on space-time The coding mode or the space-frequency-based pre-coding method; the sending module 14 is configured to send the pre-coded data to be sent to the user equipment.
  • the device in this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 1.
  • the principle and the technical effect are similar, and details are not described herein again.
  • the sending module 14 is further configured to send the beam feature information to the user equipment, so that the user equipment determines a data recovery method according to the beam feature information, and the data recovery method and method
  • the precoding method corresponds to the above.
  • the foregoing precoding parameter combination generating module 12 is specifically configured to estimate a location where the user equipment is located according to the uplink data or a pilot; and construct an antenna steering vector matrix according to a location where the user equipment is located; The antenna steering vector matrix performs singular value decomposition to obtain a diagonal matrix; and determining, according to the diagonal matrix, the beam characteristic information that meets a preset energy threshold.
  • the precoding parameter combination generating module 12 is specifically configured to calculate a sum of a maximum of n elements on a main diagonal of the diagonal matrix and a sum of all elements on the main diagonal. a ratio; when the ratio is greater than the preset energy threshold, determining that the corresponding n is the beam characteristic information, where n is a natural number.
  • the precoding parameter combination generating module 12 is further configured to perform beam feature design according to the uplink data or pilot to generate a precoding parameter combination vector.
  • the precoding parameter combination generating module 12 is configured to obtain the precoding parameter combination vector according to the beam feature information and the antenna steering vector matrix.
  • the precoding parameter combination generating module 12 performs beam feature setting according to the uplink data or pilot.
  • the precoding parameter combination generating module 12 performs beam feature setting according to the uplink data or pilot.
  • the precoding processing module 13 is specifically configured to perform precoding processing on the to-be-sent data according to the determined precoding mode and the precoding parameter combination vector.
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of an apparatus for receiving data according to the present invention.
  • the apparatus in this embodiment may include: a receiving module 21, a data recovery method determining module 22, and a data processing module 23, wherein the receiving module 21, configured to receive beam feature information sent by a base station, where the beam feature information is generated by the base station performing beam feature design according to uplink data or a pilot; and the data recovery method determining module 22 is configured to perform, according to the beam feature The information determining data recovery method, the data recovery method corresponding to the precoding method determined by the base station according to the beam feature information; the receiving module 21 is further configured to receive the precoded signal sent by the base station The data processing module 23 is configured to perform data recovery processing on the pre-encoded data according to the data recovery method.
  • the device in this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 3, and the principle and the technical effect are similar, and details are not described herein again.
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of an apparatus for transmitting data according to the present invention.
  • the apparatus of this embodiment may include: a receiving circuit 31, a processing circuit 32, and a transmitting circuit 33, where the receiving circuit 31 is configured to The receiving user equipment sends the uplink data or the pilot through the uplink subframe; the processing circuit 32 is configured to perform beam feature design according to the uplink data or the pilot, and generate beam feature information; and determine a precoding manner according to the beam feature information, And performing precoding processing on the data to be sent according to the determined precoding manner, where the precoding method includes a space-time precoding method or a space frequency based precoding method; and the sending circuit 33 is configured to perform precoding.
  • the data to be sent is sent to the user equipment.
  • the device in this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 1.
  • the principle and the technical effect are similar, and details are not described herein again.
  • the foregoing sending circuit 33 is further configured to send the beam feature information to the user equipment, so that the user equipment determines a data recovery method according to the beam feature information, and the data recovery method and method
  • the precoding method corresponds to the above.
  • the processing circuit 32 is configured to estimate a location where the user equipment is located according to the uplink data or a pilot, and construct an antenna steering vector moment according to a location where the user equipment is located. Performing singular value decomposition on the antenna steering vector matrix to obtain a diagonal matrix; and determining the beam characteristic information that meets a preset energy threshold according to the diagonal matrix.
  • the processing circuit 32 is specifically configured to calculate a ratio of a sum of a maximum of n elements on a main diagonal of the diagonal matrix to a sum of all elements on the main diagonal; When the ratio is greater than the preset energy threshold, it is determined that the corresponding n is the beam characteristic information, and n is a natural number.
  • processing circuit 32 is further configured to perform beam feature design according to the uplink data or pilot to generate a precoding parameter combination vector.
  • processing circuit 32 is specifically configured to obtain the precoding parameter combination vector according to the beam characteristic information and the antenna steering vector matrix.
  • processing circuit 32 is specifically configured to perform precoding processing on the to-be-sent data according to the determined precoding manner and the precoding parameter combination vector.
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of the apparatus for receiving data according to the present invention.
  • the apparatus of this embodiment may include: a receiving circuit 41, a processing circuit 42, and a transmitting circuit 43, wherein the receiving circuit 41 is configured to And receiving, by the base station, beam feature information, where the beam feature information is generated by the base station according to the uplink data or the pilot, and the processing circuit 42 is configured to determine a data recovery method according to the beam feature information.
  • the data recovery method is corresponding to the precoding method determined by the base station according to the beam feature information; the receiving circuit 41 is further configured to receive the precoded data sent by the base station; and the processing circuit 42 is configured to: Performing data recovery processing on the pre-encoded data according to the method of data recovery.
  • the device in this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 3, and the principle and the technical effect are similar, and details are not described herein again.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interface, indirect coupling or communication of the device or unit. It can be electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. . Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the method of various embodiments of the present invention.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

Abstract

本发明实施例提供一种数据传输的方法和装置。本发明发送数据的方法,包括:接收用户设备通过上行子帧发送的上行数据或导频;根据所述上行数据或导频进行波束特征设计,生成波束特征信息;根据所述波束特征信息确定预编码方式,并根据所述确定的预编码方式对待发送数据进行预编码处理,所述预编码方式包括基于空时的预编码方式或基于空频的预编码方式;将预编码后的待发送数据发送给所述用户设备。本发明实施例可以根据用户设备发送的上行数据或导频来灵活选择预编码方式。

Description

数据传输的方法和装置
技术领域
本发明实施例涉及通信技术, 尤其涉及一种数据传输的方法和装置。 背景技术
大规模的多输入多输出 ( Massive Multiple-Input Multiple-Output, 简称: MMIMO ) 天线系统被广泛认为是未来 5G通信系统中的一种必要的解决方 案。
为了挖掘出 MMIMO天线系统的阵列增益, 现有技术采用了一种空时分 组码(Space-Time Block Code, 简称: STBC) 的多天线传输方案, 通过结合 信道统计信息和信道特征信息, 进行天线选择, 并在选择的天线上进行 STBC的数据传输。
但是这种方案在应用于 MMIMO天线系统时, 不能实现预编码方式的自 适应调整。 而且由于天线数目很多, 形成的波束宽度还是很窄, 使得性能的 损失会很严重, 造成天线阵列增益的减少。 发明内容 本发明实施例提供一种数据传输的方法和装置, 以实现预编码方式的自 适应调整, 使 MMIMO天线系统的数据传输更鲁棒, 提高系统性能和天线增 益。 本发明实施例中的数据传输包括发送数据和接收数据。
第一方面, 本发明实施例提供一种发送数据的方法, 包括:
接收用户设备通过上行子帧发送的上行数据或导频;
根据所述上行数据或导频进行波束特征设计, 生成波束特征信息; 根据所述波束特征信息确定预编码方式, 并根据所述确定的预编码方式 对待发送数据进行预编码处理, 所述预编码方式包括基于空时的预编码方式 或基于空频的预编码方式;
将预编码后的待发送数据发送给所述用户设备。
结合第一方面, 在第一方面的第一种可能的实现方式中, 所述根据所述 上行数据或导频进行波束特征设计, 生成波束特征信息之后, 还包括: 向所述用户设备发送所述波束特征信息, 以使所述用户设备根据所述波 束特征信息确定数据恢复的方法, 所述数据恢复的方法与所述预编码方式相 对应。
结合第一方面或第一方面的第一种可能的实现方式, 在第一方面的第二 种可能的实现方式中, 所述根据所述上行数据或导频进行波束特征设计, 生 成波束特征信息, 包括:
根据所述上行数据或导频估算所述用户设备所处的位置;
根据所述用户设备所处的位置构建天线导向矢量矩阵;
对所述天线导向矢量矩阵进行奇异值分解, 获取对角矩阵;
根据所述对角矩阵确定满足预设能量阈值的所述波束特征信息。
结合第一方面的第二种可能的实现方式, 在第一方面的第三种可能的实 现方式中, 所述根据所述对角矩阵确定满足预设能量阈值的所述波束特征信 息, 包括:
计算所述对角矩阵的主对角线上的最大的 n个元素之和与所述主对角线 上的所有元素之和的比值;
当所述比值大于所述预设能量阈值时, 确定对应的 n为所述波束特征信 息, n为自然数。
结合第一方面的第二种或第三种可能的实现方式, 在第一方面的第四种 可能的实现方式中, 所述方法还包括:
根据所述上行数据或导频进行波束特征设计,生成预编码参数组合向量。 结合第一方面的第四种可能的实现方式, 在第一方面的第五种可能的实 现方式中, 所述根据所述上行数据或导频进行波束特征设计, 生成预编码参 数组合向量, 包括:
根据所述波束特征信息以及所述天线导向矢量矩阵获取所述预编码参数 组合向量。
结合第一方面的第四种或第五种可能的实现方式, 在第一方面的第六种 可能的实现方式中, 所述根据所述确定的预编码方式对待发送数据进行预编 码处理, 包括:
根据所述确定的预编码方式和所述预编码参数组合向量对所述待发送数 据进行预编码处理。
第二方面, 本发明实施例提供一种接收数据的方法, 包括:
接收基站发送的波束特征信息, 所述波束特征信息是由所述基站根据上 行数据或导频进行波束特征设计而生成的;
根据所述波束特征信息确定数据恢复的方法, 所述数据恢复的方法与所 述基站根据所述波束特征信息确定的预编码方式相对应;
接收所述基站发送的预编码后的数据, 并根据所述数据恢复的方法对所 述预编码后的数据进行数据恢复处理。
第三方面, 本发明实施例提供一种发送数据的装置, 包括:
接收模块, 用于接收用户设备通过上行子帧发送的上行数据或导频; 预编码参数组合产生模块, 用于根据所述上行数据或导频进行波束特征 设计, 生成波束特征信息;
预编码处理模块, 用于根据所述波束特征信息确定预编码方式, 并根据 所述确定的预编码方式对待发送数据进行预编码处理, 所述预编码方式包括 基于空时的预编码方式或基于空频的预编码方式;
发送模块, 用于将预编码后的待发送数据发送给所述用户设备。
结合第三方面, 在第三方面的第一种可能的实现方式中, 所述发送模块, 还用于向所述用户设备发送所述波束特征信息, 以使所述用户设备根据所述 波束特征信息确定数据恢复的方法, 所述数据恢复的方法与所述预编码方式 相对应。
结合第三方面或第三方面的第一种可能的实现方式, 在第三方面的第二 种可能的实现方式中, 所述预编码参数组合产生模块, 具体用于根据所述上 行数据或导频估算所述用户设备所处的位置; 根据所述用户设备所处的位置 构建天线导向矢量矩阵; 对所述天线导向矢量矩阵进行奇异值分解, 获取对 角矩阵; 根据所述对角矩阵确定满足预设能量阈值的所述波束特征信息。
结合第三方面的第二种可能的实现方式, 在第三方面的第三种可能的实 现方式中, 所述预编码参数组合产生模块, 具体用于计算所述对角矩阵的主 对角线上的最大的 n个元素之和与所述主对角线上的所有元素之和的比值; 当所述比值大于所述预设能量阈值时, 确定对应的 n为所述波束特征信息, n 为自然数。 结合第三方面的第二种或第三种可能的实现方式, 在第三方面的第四种 可能的实现方式中, 所述预编码参数组合产生模块, 还用于根据所述上行数 据或导频进行波束特征设计, 生成预编码参数组合向量。
结合第三方面的第四种可能的实现方式, 在第三方面的第五种可能的实 现方式中, 所述预编码参数组合产生模块, 具体用于根据所述波束特征信息 以及所述天线导向矢量矩阵获取所述预编码参数组合向量。
结合第三方面的第四种或第五种可能的实现方式, 在第三方面的第六种 可能的实现方式中, 所述预编码处理模块, 具体用于根据所述确定的预编码 方式和所述预编码参数组合向量对所述待发送数据进行预编码处理。
第四方面, 本发明实施例提供一种接收数据的装置, 包括:
接收模块, 用于接收基站发送的波束特征信息, 所述波束特征信息是由 所述基站根据上行数据或导频进行波束特征设计而生成的;
数据恢复方法确定模块, 用于根据所述波束特征信息与数据恢复的方法 之间的对应关系确定数据恢复的方法;
所述接收模块, 还用于接收所述基站发送的预编码后的数据;
数据处理模块, 用于根据所述数据恢复的方法对所述预编码后的数据进 行数据恢复处理。
上述数据恢复方法确定模块确定的所述数据恢复的方法与所述基站根据 所述波束特征信息确定的预编码方式相对应。
本发明实施例数据传输的方法和装置, 通过根据实时的信道情况进行波 束特征设计, 获得波束特征信息并确定基于空时或空频的预编码方式, 通过 该预编码方式对待发送数据处理后发送给 UE, 实现预编码方式的自适应调 整, 使 MMIMO天线系统的数据传输更鲁棒, 提高系统性能和天线增益。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作一简单地介绍, 显而易见地, 下 面描述中的附图是本发明的一些实施例, 对于本领域普通技术人员来讲, 在 不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明发送数据的方法实施例的流程图; 图 2为数据发射示意图;
图 3为本发明接收数据的方法实施例的流程图;
图 4为本发明发送数据的装置实施例一的结构示意图;
图 5为本发明接收数据的装置实施例一的结构示意图;
图 6为本发明发送数据的装置实施例二的结构示意图;
图 7为本发明接收数据的装置实施例二的结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发 明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于 本发明中的实施例, 本领域普通技术人员在没有作出创造性劳动前提下所获 得的所有其他实施例, 都属于本发明保护的范围。
STBC 多天线传输方案通过结合信道统计信息和信道特征信息, 进行天 线选择, 并在选择的天线上进行 STBC的数据传输。但是在天线数目很多时, 通过该方法形成的波束宽度会很窄, 由于没有波束特征的设计, 在波达方向
(Direction Of Arrival, 简称: DOA)估计位置有误差的情况下性能的损失会 很严重。 另一方面, STBC预编码的设计是固定的, 不能实现自适应的调整。
图 1为本发明发送数据的方法实施例的流程图, 如图 1所示, 本实施例 的方法可以包括:
歩骤 101、 接收用户设备通过上行子帧发送的上行数据或导频; 本实施例的执行主体可以是支持 MMIMO 天线系统的基站。 用户设备
(User Equipment, 简称 UE) 可以是手机、 无绳电话、 计算机设备、 传真设 备或者是其它可以与基站进行通信的设备。
歩骤 102、 根据所述上行数据或导频进行波束特征设计, 生成波束特征
I Ή自、 .,
基站根据这些上行数据或导频实时地进行波束特征设计, 生成波束特征 信息, 波束特征信息反映了当前信道情况下用于向 UE发射数据的虚拟天线 的数目, 该数目的虚拟天线具备了最高或较高的能量, 确保多天线系统中的 天线增益。 歩骤 103、 根据所述波束特征信息确定预编码方式, 并根据所述确定的 预编码方式对待发送数据进行预编码处理, 所述预编码方式包括基于空时的 预编码方式或基于空频的预编码方式;
基站可以保存波束特征信息与预编码方式之间的对应关系。 例如, 波束 特征信息为 2, 表示确定出的用于向 UE发射数据的虚拟天线数目为 2, 基站 根据波束特征信息与预编码方式之间的对应关系确定波束特征信息为 2时对 应的预编码方式为 STBC (如 Alamouti码) , 然后基站根据 Alamouti码对待 发送数据进行预编码处理。
歩骤 104、 将预编码后的待发送数据发送给所述用户设备。
基站将预编码后的待发送数据发送给 UE, 以使得 UE根据数据恢复的方 法对接收到的数据进行恢复处理, 这里的数据恢复的方法与基站的预编码方 式相对应, 例如基站通过 Alamouti码对待发送数据进行预编码, 则 UE也用 与 Alamouti码相应的方法对数据进行恢复。
本实施例中用于确定预编码方式的波束特征信息是根据信道情况进行设 计的, 预编码方式由此可以根据信道的实际情况进行灵活调整, 这样会使 MMIMO天线系统的数据传输更鲁棒,提高了通信系统的性能和天线的增益。
进一歩的, 在上述方法实施例的歩骤 102之后, 还包括: 向所述用户设 备发送所述波束特征信息, 以使所述用户设备根据所述波束特征信息确定数 据恢复的方法, 所述数据恢复的方法与所述预编码方式相对应。
具体来讲, 基站在生成波束特征信息后, 可以通过物理下行控制信道
(Physical Downlink Control Channel, 简称: PDCCH) 将波束特征信息发送 给 UE, 这样 UE即可获知需要在哪几个资源元素 (Resource Element, 简称: RE)上接收数据,并根据波束特征信息对应的数据恢复的方法进行恢复处理。
进一歩的, 上述方法实施例的歩骤 102根据所述上行数据或导频进行波 束特征设计, 生成波束特征信息, 具体的实现方法可以是: 根据所述上行数 据或导频估算所述用户设备所处的位置; 根据所述用户设备所处的位置构建 天线导向矢量矩阵; 对所述天线导向矢量矩阵进行奇异值分解, 获取对角矩 阵; 根据所述对角矩阵确定满足预设能量阈值的所述波束特征信息。 其中, 根据所述对角矩阵确定满足预设能量阈值的所述波束特征信息, 具体的实现 方法可以是: 计算所述对角矩阵的主对角线上的最大的 n个元素之和与所述 主对角线上的所有元素之和的比值; 当所述比值大于所述预设能量阈值时, 确定对应的 n为所述波束特征信息, n为自然数。
具体来讲, 基站根据上行数据或导频进行波束特征设计, 生成波束特征 信息, 可以有多种实现方式, 只要可以从多个虚拟天线中找出相对于 UE能 量最大的虚拟天线, 并在这些虚拟天线上进行数据传输即可提高天线增益。
进一歩的, 在上述方法实施例的歩骤 102, 基站根据所述上行数据或导 频进行波束特征设计, 除了生成波束特征信息, 还可以生成预编码参数组合 向量, 具体的实现方法可以是: 根据所述波束特征信息以及所述天线导向矢 量矩阵获取所述预编码参数组合向量。
下面采用两个具体的实施例, 对上述方法实施例的技术方案进行详细说 明。
示例一:
基站根据所述上行数据或导频估算所述用户设备所处的位置可以采用如 下方式实现: 例如, 基站根据上行数据或导频通过 DOA来估算 UE的位置角 度 , 根据该位置角度 确定一个角度范围 Θ = 可以是 - 也可以是 , ^可以是 + Δ0, 为预设歩进值, 对于本领域技术人员获取 角度范围 Θ可以通过任意已知的方法, 此处不做具体限定。
根据所述用户设备所处的位置构建天线导向矢量矩阵可以采用如下方式 实现: 例如, 基站在上述角度范围 Θ内等间隔采样, 一共获取到 Ν个采样点 θ1、 θ2、 ΘΝ , 基于每个采样点构建天线导向矢量矩阵 c = A (Θ B (Θ 其中, a ) a ft
Figure imgf000008_0001
b ) b ft , 其中, d
aW„)为角度 i l < n < N )对应的天线导向矢: h(0n ) = ^ a(^) 0„为 角度范围 Θ内的任意一个采样角度;
对所述天线导向矢量矩阵进行奇异值分解, 获取对角矩阵可以采用如下 方式实现: 例如, 对天线导向矢量矩阵 C进行奇异值分解 (Singular Value o、
Decomposition,简称: SVD) ,即 = U∑V",从而获取对角矩阵∑ = ··.
0 a 根据所述对角矩阵确定满足预设能量阈值的所述波束特征信息可以采用 如下方式实现: 例如, 根据对角矩阵∑确定满足预设能量阈值的波束特征信 息, 即计算对角矩阵∑的主对角线上且最大的 m个元素之和与主对角线上的 所有元素之和的比值, 当比值大于预设能量阈值时, 确定对应的 m值为波束 特征信息。具体地, 计算对角矩阵∑的主对角线上的所有元素之和, 将元素 至 从大到小的排序, 按顺序求 m个元素之和, m从 2开始逐一递增, 将每 次求和结果与所有元素之和求比值, 并将该比值与预设能量阈值进行比较, 直到比值大于预设能量阈值, 此时对应的 m值即为波束特征信息。 这表示从 大到小的 m个元素对应的虚拟天线的能量已经可以满足数据的发送需求, 根 据 m值确定基于空时或空频的预编码方式,例如, m值为 2时,确定采用 STBC 预编码方式(如 Alamouti码)对数据进行预编码; 根据 m值计算获取预编码
Figure imgf000009_0001
示例二:
基站根据所述上行数据或导频估算所述用户设备所处的位置可以采用如 下方式实现: 例如, 基站通过 DOA估计获取到 UE的位置角度 后, 根据该 角度确定一个角度范围 Θ = [θ θΝ ~] , 角度范围 Θ的确定方法与示例一描述的 方法相同, 此处不再赘述。
与前一示例不同的是, 基站根据所述用户设备所处的位置构建天线导向 矢量矩阵可以采用如下方式实现: 例如, 基站取 ^ = max ( _ , 构 建天线导向矢量矩阵 C, 该天线导向矢量矩阵 C中 p 行 q 列的元素为 cpq = S ln (2^ B (P" q) ) , p和 q均小于天线数。 之后, 基站对所述天线导向矢量 π< - q)
矩阵进行奇异值分解, 获取对角矩阵具体为: 对天线导向矢量矩阵 C进行
¾ 0
SVD分解, gp c = U∑V;, 对角矩阵∑ 基站根据所述对角矩阵
0 an 确定满足预设能量阈值的所述波束特征信息具体为: 根据对角矩阵∑确定满 足预设能量阈值的波束特征信息, 即计算对角矩阵∑的主对角线上的最大的 m个元素之和与主对角线上的所有元素之和的比值, 当比值大于预设能量阈 值时, 确定对应的 m为波束特征信息。 计算对角矩阵∑的主对角线上的所有 元素之和, 元素 至 从大到小的排序, 按顺序求 m个元素之和, m从 2开 始逐一递增, 将每次求和结果与所有元素之和求比值, 并将该比值与预设能
Figure imgf000010_0001
= sk x U( :,k) x a*( ) 其 征信息; 根据 m值计算获取预编码参数组合向:
1, A是偶数
中, 1 ≤ A ≤ m e k = 为位置角度 对应的天线导向矢:
-J, k是奇数 的共轭向量。
基站通过以上两个示例可以生成波束特征信息 m和预编码参数组合向量 W , 然后根据 m值确定基于空时或空频的预编码方式, 例如, m值为 2时, 确定预编码方式为 STBC (如 Alamouti码) , 然后根据 STBC (如 Alamouti 码) 模式和预编码参数组合向量 (Wl,w2 )对待发送数据进行预编码。 基站根据 波束特征信息 m和预编码参数组合向量 W对待发送数据进行基于空时或空频 的预编码处理, 此时每个预编码向量 等效于一根虚拟天线。 预编码处理后 的数据通过所有的物理天线发送, 图 2数据发射示意图, 如图 2所示, 波束 特征信息 m=2, 可设计为 Alamouti码, 已知预编码参数组合向量 , w2 ), 根
Figure imgf000010_0004
Figure imgf000010_0002
两个连续 RE上基站预编码后发送出去的数据, 表示 Alamouti
-H*w * H*w, 码的预编码向量, H为信道响应向:
Figure imgf000010_0003
后的待发送数据发送给 UE, 波束特征信息已经通过 PDCCH发送给 UE。 为 了使得 UE能够进行数据接收并恢复出数据, UE需要知道虚拟天线对应的等
¾的信道 , 因此基站需针对基于空时或空频的预编码方式和预编码参数组 合向量发送相应的解调参考数据 (Demodulation Reference Signal , 简称: DMRS ) 导频。
图 3为本发明接收数据的方法实施例的流程图, 如图 3所示, 本实施例 的方法可以包括:
歩骤 201、 接收基站发送的波束特征信息;
本实施例的执行主体可以是支持 MMIMO天线系统的 UE。 UE接收基站 发送的波束特征信息, 该波束特征信息是由所述基站根据上行数据或导频进 行波束特征设计而生成的。 歩骤 202、 根据所述波束特征信息确定数据恢复的方法;
该数据恢复的方法与所述基站根据所述波束特征信息确定的预编码方式 相对应。
具体地, UE 中可以保存所述波束特征信息与预编码方式之间的对应关 系, 由此可以根据所述波束特征信息确定从基站接收到的数据所采用的预编 码方式, 并进一歩确定与所述预编码方式相对应的数据恢复的方法 (如, 解 码方式) , 后续 UE将采用该数据恢复的方法来对接收到的数据 (经过基站 预编码后的数据) 进行恢复。
或者, UE中也可以直接保存所述波束特征信息与数据恢复的方法 (如, 解码方式)之间的对应关系, UE收到上述波束特性信息后, 就可以根据该对 应关系获取相应的数据恢复的方法。
歩骤 203、 接收所述基站发送的预编码后的数据, 并根据所述数据恢复 的方法对所述预编码后的数据进行数据恢复处理。
具体来讲, UE在接收到基站发送的波束特征信息后, 联合相应的多个
RE来接收数据, 具体联合的 RE的个数和波束特征信息的值相等, RE包括 时域和频域两个维度, 如果无线系统预先配置的是空时编码, 则表示基站是 将预编码后的数据分别承载在时间连续的多个 RE上 (例如图 2所示) , 如 果无线系统预先配置的是空频编码, 则表示基站是将预编码后的数据分别承 载在频段连续的多个 RE上, UE根据无线系统的预先配置, 根据波束特征信 息即可在相应的 RE上接收数据, 并且进行数据恢复。 假设信道矩阵 H已知, 以 m=2 为 例 , UE 在 时 间 连 续 的 两 个 RE 上 接 收 数 据
Figure imgf000011_0001
本实施例, m的取值将影响最终 UE的解调性能, 以 DOA估计结果为基 础, 随着多天线传输装置的波束宽度的变化 m的取值会有所不同, 天线数的 变化时, m 的取值也有不同。 m值的改变带来预编码方式的改变, 联合 RE 进行数据发送的方式也将相应改变。 多天线传输装置通过根据实时的信道情 况进行波束特征设计,并根据波束特征设计来确定采用哪种预编码方式向 UE 发送数据, 由此实现了预编码方式的自适应调整, 使 MMIMO天线系统的数 据传输更鲁棒, 提高了通信系统的性能和天线的增益。
图 4为本发明发送数据的装置实施例一的结构示意图, 如图 4所示, 本 实施例的装置可以包括: 接收模块 11、 预编码参数组合产生模块 12、 预编码 处理模块 13以及发送模块 14, 其中, 接收模块 11, 用于接收用户设备通过 上行子帧发送的上行数据或导频; 预编码参数组合产生模块 12, 用于根据所 述上行数据或导频进行波束特征设计, 生成波束特征信息; 预编码处理模块 13, 用于根据所述波束特征信息确定预编码方式, 并根据所述确定的预编码 方式对待发送数据进行预编码处理, 所述预编码方式包括基于空时的预编码 方式或基于空频的预编码方式; 发送模块 14, 用于将预编码后的待发送数据 发送给所述用户设备。
本实施例的装置, 可以用于执行图 1所示方法实施例的技术方案, 其实 现原理和技术效果类似, 此处不再赘述。
进一歩的, 上述发送模块 14, 还用于向所述用户设备发送所述波束特征 信息, 以使所述用户设备根据所述波束特征信息确定数据恢复的方法, 所述 数据恢复的方法与所述预编码方式相对应。
进一歩的, 上述预编码参数组合产生模块 12, 具体用于根据所述上行数 据或导频估算所述用户设备所处的位置; 根据所述用户设备所处的位置构建 天线导向矢量矩阵; 对所述天线导向矢量矩阵进行奇异值分解, 获取对角矩 阵; 根据所述对角矩阵确定满足预设能量阈值的所述波束特征信息。
进一歩的, 上述预编码参数组合产生模块 12, 具体用于计算所述对角矩 阵的主对角线上的最大的 n个元素之和与所述主对角线上的所有元素之和的 比值; 当所述比值大于所述预设能量阈值时, 确定对应的 n为所述波束特征 信息, n为自然数。
进一歩的, 上述预编码参数组合产生模块 12, 还用于根据所述上行数据 或导频进行波束特征设计, 生成预编码参数组合向量。
进一歩的, 上述预编码参数组合产生模块 12, 具体用于根据所述波束特 征信息以及所述天线导向矢量矩阵获取所述预编码参数组合向量。
预编码参数组合产生模块 12 根据所述上行数据或导频进行波束特征设 计, 并生成波束特征信息的具体方式可以参见上述方法实施例部分的相关描 述, 此处不再赘述。
进一歩的, 上述预编码处理模块 13, 具体用于根据所述确定的预编码方 式和所述预编码参数组合向量对所述待发送数据进行预编码处理。
图 5为本发明接收数据的装置实施例一的结构示意图, 如图 5所示, 本 实施例的装置可以包括: 接收模块 21、 数据恢复方法确定模块 22 以及数据 处理模块 23, 其中, 接收模块 21, 用于接收基站发送的波束特征信息, 所述 波束特征信息是由所述基站根据上行数据或导频进行波束特征设计而生成 的; 数据恢复方法确定模块 22, 用于根据所述波束特征信息确定数据恢复的 方法, 所述数据恢复的方法与所述基站根据所述波束特征信息确定的预编码 方式相对应;所述接收模块 21,还用于接收所述基站发送的预编码后的数据; 数据处理模块 23, 用于根据所述数据恢复的方法对所述预编码后的数据进行 数据恢复处理。
本实施例的装置, 可以用于执行图 3所示方法实施例的技术方案, 其实 现原理和技术效果类似, 此处不再赘述。
图 6为本发明发送数据的装置实施例二的结构示意图, 如图 6所示, 本 实施例的装置可以包括: 接收电路 31、 处理电路 32以及发送电路 33, 其中, 接收电路 31, 用于接收用户设备通过上行子帧上发送上行数据或导频; 处理 电路 32, 用于根据所述上行数据或导频进行波束特征设计, 生成波束特征信 息; 根据所述波束特征信息确定预编码方式, 并根据所述确定的预编码方式 对待发送数据进行预编码处理, 所述预编码方式包括基于空时的预编码方式 或基于空频的预编码方式; 发送电路 33, 用于将预编码后的待发送数据发送 给所述用户设备。
本实施例的装置, 可以用于执行图 1所示方法实施例的技术方案, 其实 现原理和技术效果类似, 此处不再赘述。
进一歩的, 上述发送电路 33, 还用于向所述用户设备发送所述波束特征 信息, 以使所述用户设备根据所述波束特征信息确定数据恢复的方法, 所述 数据恢复的方法与所述预编码方式相对应。
进一歩的, 上述处理电路 32, 具体用于根据所述上行数据或导频估算所 述用户设备所处的位置; 根据所述用户设备所处的位置构建天线导向矢量矩 阵; 对所述天线导向矢量矩阵进行奇异值分解, 获取对角矩阵; 根据所述对 角矩阵确定满足预设能量阈值的所述波束特征信息。
进一歩的, 上述处理电路 32, 具体用于计算所述对角矩阵的主对角线上 的最大的 n个元素之和与所述主对角线上的所有元素之和的比值; 当所述比 值大于所述预设能量阈值时, 确定对应的 n为所述波束特征信息, n为自然 数。
处理电路 32根据所述上行数据或导频进行波束特征设计,并生成波束特 征信息的具体方式可以参见上述方法实施例部分的相关描述,此处不再赘述。
进一歩的, 上述处理电路 32, 还用于根据所述上行数据或导频进行波束 特征设计, 生成预编码参数组合向量。
进一歩的, 上述处理电路 32, 具体用于根据所述波束特征信息以及所述 天线导向矢量矩阵获取所述预编码参数组合向量。
进一歩的, 上述处理电路 32, 具体用于根据所述确定的预编码方式和所 述预编码参数组合向量对所述待发送数据进行预编码处理。
图 7为本发明接收数据的装置实施例二的结构示意图, 如图 7所示, 本 实施例的装置可以包括: 接收电路 41、 处理电路 42以及发送电路 43, 其中, 接收电路 41, 用于接收基站发送的波束特征信息, 所述波束特征信息是由所 述基站根据上行数据或导频进行波束特征设计而生成的; 处理电路 42, 用于 根据所述波束特征信息确定数据恢复的方法, 所述数据恢复的方法与所述基 站根据所述波束特征信息确定的预编码方式相对应; 上述接收电路 41, 还用 于接收所述基站发送的预编码后的数据; 处理电路 42, 用于根据所述数据恢 复的方法对所述预编码后的数据进行数据恢复处理。
本实施例的装置, 可以用于执行图 3所示方法实施例的技术方案, 其实 现原理和技术效果类似, 此处不再赘述。
在本发明所提供的几个实施例中, 应该理解到, 所揭露的装置和方法, 可以通过其它的方式实现。例如, 以上所描述的装置实施例仅仅是示意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外 的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个系统, 或 一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间的耦合或 直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合或通信连 接, 可以是电性, 机械或其它的形式。
所述该作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单 元中。 上述集成的单元既可以采用硬件的形式实现, 也可以采用硬件加软件 功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元, 可以存储在一个计算机 可读取存储介质中。 上述软件功能单元存储在一个存储介质中, 包括若干指 令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等) 或处理器 (processor) 执行本发明各个实施例所述方法的部分歩骤。 而前述 的存储介质包括: U盘、移动硬盘、只读存储器(Read-Only Memory, ROM)、 随机存取存储器(Random Access Memory, RAM) 、 磁碟或者光盘等各种可 以存储程序代码的介质。
本领域技术人员可以清楚地了解到, 为描述的方便和简洁, 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, 即将装置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。 上述描述的装置的具体工作过程, 可以 参考前述方法实施例中的对应过程, 在此不再赘述。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种发送数据的方法, 其特征在于, 包括:
接收用户设备通过上行子帧发送的上行数据或导频;
根据所述上行数据或导频进行波束特征设计, 生成波束特征信息; 根据所述波束特征信息确定预编码方式, 并根据所述确定的预编码方式 对待发送数据进行预编码处理, 所述预编码方式包括基于空时的预编码方式 或基于空频的预编码方式;
将预编码后的待发送数据发送给所述用户设备。
2、 根据权利要求 1 所述的方法, 其特征在于, 所述根据所述上行数据 或导频进行波束特征设计, 生成波束特征信息之后, 还包括:
向所述用户设备发送所述波束特征信息, 以使所述用户设备根据所述波 束特征信息确定数据恢复的方法, 所述数据恢复的方法与所述预编码方式相 对应。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述根据所述上行数 据或导频进行波束特征设计, 生成波束特征信息, 包括:
根据所述上行数据或导频估算所述用户设备所处的位置;
根据所述用户设备所处的位置构建天线导向矢量矩阵;
对所述天线导向矢量矩阵进行奇异值分解, 获取对角矩阵;
根据所述对角矩阵确定满足预设能量阈值的所述波束特征信息。
4、 根据权利要求 3 所述的方法, 其特征在于, 所述根据所述对角矩阵 确定满足预设能量阈值的所述波束特征信息, 包括:
计算所述对角矩阵的主对角线上的最大的 n个元素之和与所述主对角线 上的所有元素之和的比值;
当所述比值大于所述预设能量阈值时, 确定对应的 n为所述波束特征信 息, n为自然数。
5、 根据权利要求 3或 4所述的方法, 其特征在于, 所述方法还包括: 根据所述上行数据或导频进行波束特征设计, 生成预编码参数组合向
6、 根据权利要求 5 所述的方法, 其特征在于, 所述根据所述上行数据 或导频进行波束特征设计, 生成预编码参数组合向量, 包括: 根据所述波束特征信息以及所述天线导向矢量矩阵获取所述预编码参数 组合向量。
7、 根据权利要求 5或 6所述的方法, 其特征在于, 所述根据所述确定的 预编码方式对待发送数据进行预编码处理, 包括:
根据所述确定的预编码方式和所述预编码参数组合向量对所述待发送数 据进行预编码处理。
8、 一种接收数据的方法, 其特征在于, 包括:
接收基站发送的波束特征信息, 所述波束特征信息是由所述基站根据上 行数据或导频进行波束特征设计而生成的;
根据所述波束特征信息确定数据恢复的方法, 所述数据恢复的方法与所 述基站根据所述波束特征信息确定的预编码方式相对应;
接收所述基站发送的预编码后的数据, 并根据所述数据恢复的方法对所 述预编码后的数据进行数据恢复处理。
9、 一种发送数据的装置, 其特征在于, 包括:
接收模块, 用于接收用户设备通过上行子帧发送的上行数据或导频; 预编码参数组合产生模块, 用于根据所述上行数据或导频进行波束特征 设计, 生成波束特征信息;
预编码处理模块, 用于根据所述波束特征信息确定预编码方式, 并根据 所述确定的预编码方式对待发送数据进行预编码处理, 所述预编码方式包括 基于空时的预编码方式或基于空频的预编码方式;
发送模块, 用于将预编码后的待发送数据发送给所述用户设备。
10、 根据权利要求 9所述的装置, 其特征在于, 所述发送模块, 还用于 向所述用户设备发送所述波束特征信息, 以使所述用户设备根据所述波束特 征信息确定数据恢复的方法, 所述数据恢复的方法与所述预编码方式相对 应。
11、 根据权利要求 9或 10所述的装置, 其特征在于, 所述预编码参数组 合产生模块, 具体用于根据所述上行数据或导频估算所述用户设备所处的位 置; 根据所述用户设备所处的位置构建天线导向矢量矩阵; 对所述天线导向 矢量矩阵进行奇异值分解, 获取对角矩阵; 根据所述对角矩阵确定满足预设 能量阈值的所述波束特征信息。
12、 根据权利要求 11 所述的装置, 其特征在于, 所述预编码参数组合 产生模块, 具体用于计算所述对角矩阵的主对角线上的最大的 n个元素之和 与所述主对角线上的所有元素之和的比值; 当所述比值大于所述预设能量阈 值时, 确定对应的 n为所述波束特征信息, n为自然数。
13、 根据权利要求 11或 12所述的装置, 其特征在于, 所述预编码参数 组合产生模块, 还用于根据所述上行数据或导频进行波束特征设计, 生成预 编码参数组合向量。
14、 根据权利要求 13 所述的装置, 其特征在于, 所述预编码参数组合 产生模块, 具体用于根据所述波束特征信息以及所述天线导向矢量矩阵获取 所述预编码参数组合向量。
15、 根据权利要求 13或 14所述的装置, 其特征在于, 所述预编码处理 模块, 具体用于根据所述确定的预编码方式和所述预编码参数组合向量对所 述待发送数据进行预编码处理。
16、 一种接收数据的装置, 其特征在于, 包括:
接收模块, 用于接收基站发送的波束特征信息, 所述波束特征信息是由 所述基站根据上行数据或导频进行波束特征设计而生成的;
数据恢复方法确定模块, 用于根据所述波束特征信息确定数据恢复的方 法, 所述数据恢复的方法与所述基站根据所述波束特征信息确定的预编码方 式相对应;
所述接收模块, 还用于接收所述基站发送的预编码后的数据;
数据处理模块, 用于根据所述数据恢复的方法对所述预编码后的数据进 行数据恢复处理。
PCT/CN2014/083421 2014-07-31 2014-07-31 数据传输的方法和装置 WO2016015282A1 (zh)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PCT/CN2014/083421 WO2016015282A1 (zh) 2014-07-31 2014-07-31 数据传输的方法和装置
EP14898368.7A EP3197067A4 (en) 2014-07-31 2014-07-31 Data transmission method and apparatus
JP2017505091A JP2017528960A (ja) 2014-07-31 2014-07-31 データ送信方法及び装置
BR112017001923A BR112017001923A2 (pt) 2014-07-31 2014-07-31 método e aparelho de transmissão de dados
KR1020177004648A KR20170032444A (ko) 2014-07-31 2014-07-31 데이터 전송 방법 및 장치
CN201480080884.4A CN106575989A (zh) 2014-07-31 2014-07-31 数据传输的方法和装置
US15/419,595 US20170141829A1 (en) 2014-07-31 2017-01-30 Data Transmission Method and Apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/083421 WO2016015282A1 (zh) 2014-07-31 2014-07-31 数据传输的方法和装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/419,595 Continuation US20170141829A1 (en) 2014-07-31 2017-01-30 Data Transmission Method and Apparatus

Publications (1)

Publication Number Publication Date
WO2016015282A1 true WO2016015282A1 (zh) 2016-02-04

Family

ID=55216638

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/083421 WO2016015282A1 (zh) 2014-07-31 2014-07-31 数据传输的方法和装置

Country Status (7)

Country Link
US (1) US20170141829A1 (zh)
EP (1) EP3197067A4 (zh)
JP (1) JP2017528960A (zh)
KR (1) KR20170032444A (zh)
CN (1) CN106575989A (zh)
BR (1) BR112017001923A2 (zh)
WO (1) WO2016015282A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10735080B2 (en) 2016-08-10 2020-08-04 Huawei Technologies Co., Ltd. Transmission scheme indication method, and data transmission method, apparatus, and system
US11469940B2 (en) 2016-10-03 2022-10-11 Qualcomm Incorporated Fast beam recovery using beam information in the measurement report

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111357356A (zh) * 2017-11-24 2020-06-30 鸿颖创新有限公司 无线通信系统中用于波束故障恢复的装置及方法
CN115225125A (zh) * 2018-10-27 2022-10-21 华为技术有限公司 指示和确定预编码向量的方法以及通信装置
US11079465B2 (en) * 2018-10-30 2021-08-03 Electronics And Telecommunications Research Institute Method and apparatus for estimating location of signal source
CN111193533B (zh) * 2019-12-05 2021-08-10 东南大学 大规模mimo波束域鲁棒预编码传输方法与系统
CN112688866B (zh) * 2020-12-22 2023-03-21 上海金卓科技有限公司 一种数据发送、数据接收方法、电子设备及存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
CN103166688A (zh) * 2011-12-14 2013-06-19 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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6850741B2 (en) * 2002-04-04 2005-02-01 Agency For Science, Technology And Research Method for selecting switched orthogonal beams for downlink diversity transmission
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
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
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
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
CN103166688A (zh) * 2011-12-14 2013-06-19 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10735080B2 (en) 2016-08-10 2020-08-04 Huawei Technologies Co., Ltd. Transmission scheme indication method, and data transmission method, apparatus, and system
US11469940B2 (en) 2016-10-03 2022-10-11 Qualcomm Incorporated Fast beam recovery using beam information in the measurement report

Also Published As

Publication number Publication date
US20170141829A1 (en) 2017-05-18
CN106575989A (zh) 2017-04-19
EP3197067A1 (en) 2017-07-26
BR112017001923A2 (pt) 2018-07-17
EP3197067A4 (en) 2017-07-26
KR20170032444A (ko) 2017-03-22
JP2017528960A (ja) 2017-09-28

Similar Documents

Publication Publication Date Title
WO2016015282A1 (zh) 数据传输的方法和装置
US8098755B2 (en) Method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook
JP5550200B2 (ja) 多入力多出力システムにおけるダウンリンク伝送方法及び基地局
JP5661120B2 (ja) 無線ネットワークにおけるダウンリンク・マルチユーザーmimo送信のための方法および装置
WO2012100533A1 (zh) 预编码处理方法、基站和通信系统
WO2019041470A1 (zh) 大规模mimo鲁棒预编码传输方法
WO2015070502A1 (zh) 基于导频复用的大规模mimo无线通信方法
TW201249129A (en) Model-based channel estimator for correlated fading channels and channel estimation method thereof
WO2012075834A1 (zh) 一种预编码的方法及装置
WO2010105400A1 (zh) 一种数据传输方法、通讯系统以及相关设备
WO2011137829A1 (zh) 干扰对齐方法和设备及多信道通信系统
WO2013033919A1 (zh) 数据传输方法、系统、发射机和接收机
WO2015168940A1 (zh) 解调参考信号配置方法、装置、基站及用户设备
JP2009153139A (ja) Mimo下りリンクにおけるプリコーディング処理方法、装置及び基地局
WO2011050543A1 (zh) 获取下行信道状态信息的方法及装置
WO2018059002A1 (zh) 一种波束选择方法及相关设备
WO2011110123A2 (zh) 数据传输方法和装置
WO2014071737A1 (zh) 阵列天线及发射接收信号方法、装置
WO2006114030A1 (fr) Procede permettant d’augmenter la capacite dans le sens montant d’un systeme a entrees multiples et a sorties multiples du type wcdma et son appareil
GB2447675A (en) Incremental signal processing for subcarriers in a channel of a communication system
US11496188B2 (en) Electronic device, communication method and medium
WO2013078743A1 (zh) 协作多点多用户mimo系统的预编码方法及矩阵生成装置
WO2013135020A1 (zh) 一种上行协作多点方法及系统
WO2018050088A1 (zh) 提高数据赋形增益方法及装置、基站、通信系统
WO2012113258A1 (zh) 一种下行信号预处理发送方法及装置

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: 14898368

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017505091

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2014898368

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2014898368

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 20177004648

Country of ref document: KR

Kind code of ref document: A

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112017001923

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112017001923

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20170130