WO2017121095A1 - Procédé et dispositif pour réaliser une émission d'un symbole de référence de mesure - Google Patents

Procédé et dispositif pour réaliser une émission d'un symbole de référence de mesure Download PDF

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Publication number
WO2017121095A1
WO2017121095A1 PCT/CN2016/092420 CN2016092420W WO2017121095A1 WO 2017121095 A1 WO2017121095 A1 WO 2017121095A1 CN 2016092420 W CN2016092420 W CN 2016092420W WO 2017121095 A1 WO2017121095 A1 WO 2017121095A1
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Prior art keywords
measurement reference
symbol
symbols
data
ofdm
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PCT/CN2016/092420
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English (en)
Chinese (zh)
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张淑娟
毕峰
刘文豪
苗婷
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中兴通讯股份有限公司
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Publication of WO2017121095A1 publication Critical patent/WO2017121095A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0067—Allocation algorithms which involve graph matching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • 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
    • H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments of the present invention relate to mobile communication technologies, and in particular, to a method and apparatus for transmitting measurement reference symbols based on a high frequency hybrid beam communication method.
  • High-frequency carrier communication has a large available bandwidth and can provide efficient high-speed data communication.
  • a big technical challenge faced by high-frequency carrier communication is that relatively low-frequency signals, the fading of high-frequency signals in space is very large, although the high-frequency signals in the outdoor communication have a spatial fading loss problem, but because of With its wavelength reduction, more antennas can usually be used so that communication can be based on the beam to compensate for fading losses in space.
  • the radio frequency processing is a time domain signal, and the radio frequency beam acts on all subbands and is immutable within an Orthogonal Frequency Division Multiplexing (OFDM) symbol.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the general radio frequency link is limited, that is, the direction of the radio frequency link on one OFDM symbol is relatively limited, and the available bandwidth of the high frequency is large, and the optimal data transmission beam on each sub-band is different, so as to satisfy different sub-bands.
  • Optimal data traffic transmission beams, limited RF beams are far from enough.
  • the limited RF link also needs to extract a part of the RF link for measurement signal transmission, especially when the data beam and measurement The problem is more serious when there is no intersection between the beams.
  • the data beam is based on the user's business needs, it is relatively random, if Sending measurement signals according to the existing LTE system will greatly increase the measurement delay.
  • the data beam is beam 1, beam 2, beam 3, and beam 4 in three subframes (the optimal beam of the user who needs the service is concentrated in beam 1, beam 2, beam 3, and beam 4).
  • the measurement beam needs to be polled and transmitted in beam 1, beam 2, beam 3, beam 4, beam 5, beam 6, beam 7 and beam 8. At this time, the measurement beam is affected by the data beam, thereby affecting the measurement period. Alternatively, the order in which the data beams are transmitted is not the polling mode, and the measurement period is also affected at this time. At the same time, in order to reduce the beam training load, the general data beam is constant on one physical resource block (PRB) resource, but the beam measurement is expected to complete measurement of multiple beams in one subframe. The data beam and the measurement beam necessarily create a direction conflict. If multiple streams are sent to the user, multiple radio links may be required on one sub-band, and the user needs to be beam-trained for each radio link.
  • PRB physical resource block
  • the measurement beam and the data beam compete for the limited radio link. Use is even more prominent. Moreover, since it is desirable to complete the transmission of all measurement beams that need to be transmitted within one beam measurement period in as few transmission units as possible, the direction of the data beams in one transmission unit is generally fixed, which undoubtedly makes the measurement beam and the data beam need to compete. Use a limited RF link.
  • the transmission and reception of reference symbols according to the transmission pattern of the existing measurement pilot (CSI-RS) in LTE may occur.
  • Embodiments of the present invention provide a method and apparatus for implementing measurement reference symbol transmission, which can at least reduce collision problems between measurement beam and data beam transmission and reception.
  • Embodiments of the present invention provide a method for implementing measurement reference symbol transmission, including:
  • the transmitting end determines the multiplexing pattern category of the measurement reference symbol and the data symbol in the transmission unit that needs to transmit the measurement reference symbol;
  • the transmitting end transmits the measurement reference symbols and the data symbols according to the determined multiplexing pattern category.
  • the transmission unit that needs to send the measurement reference symbol is:
  • the transmission unit in which the aperiodic beam measurement reference symbol of the dynamic signaling is located.
  • the determining the multiplexing pattern category of the measurement reference symbol and the data symbol comprises:
  • the transmitting end and the receiving end pre-arranging a multiplexing pattern category
  • the transmitting end invisibly notifying a set of multiplexing pattern categories according to relevant time domain parameters of the transmission unit;
  • the transmitting end notifies the receiving end to multiplex the pattern category by signaling.
  • the multiplexing pattern categories of the measurement reference symbols and the data symbols include:
  • the first type of multiplexing all measurement reference symbols and data symbols are time-division multiplexed;
  • the second type of multiplexing all measurement reference symbols and data symbols are frequency division multiplexed;
  • all measurement reference symbols and data symbols are frequency division multiplexed; and all demodulation reference signal ports occupy resource elements RE on all orthogonal frequency division multiplexed OFDMs having measurement reference symbols, And between different OFDMs that measure reference symbols, or between OFDM with measured reference symbols and OFDM without measured reference symbols, different demodulation reference signal ports can only be in the frequency domain if the code division multiplexing can only be in the time domain code Division multiplexing
  • the fourth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbols use the first signaling to indicate the measurement reference symbol port whose transmission power is 0 or the transmission power corresponding to the measurement reference symbol port.
  • the fifth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; and the second signaling indicates that the data symbol transmission power is 0 OFDM symbol index;
  • a sixth type of multiplexing mode partial measurement reference symbols and data symbols time division multiplexing, partial measurement reference symbols and data symbols frequency division multiplexing; and demodulation reference signals only on frequency division multiplexed OFDM or not Measure the OFDM on the reference signal.
  • the measurement reference signal corresponding to one measurement reference port is only one frequency division multiplexed OFDM symbol. Send on, or only on a time-division multiplexed measurement reference symbol.
  • the frequency division multiplexing is: measuring frequency division multiplexing of reference symbols and data symbols on OFDM with measurement reference symbols; the transmission unit memory There is no OFDM symbol that measures the reference symbol only data symbols.
  • the multiplexing pattern category of the measurement reference symbol and the data symbol is a first type multiplexing mode and/or a sixth type multiplexing mode
  • the sum of the durations of one or more of the time division multiplexed measurement reference symbols is equal to the duration of one data symbol, or the sum of the duration of one or more of the time division multiplexed measurement reference symbols and the duration of one short data symbol is equal to The length of a long data symbol.
  • the transmission unit pattern further satisfies: carrying a beam measurement reference symbol in a frequency division multiplexing manner on a short data symbol in the transmission unit.
  • the multiplexing pattern category of the measurement reference symbol and the data symbol is the sixth type multiplexing mode
  • the number of time division multiplexed OFDM and/or frequency division multiplexed OFDM is fixed or different; the number of measurement reference symbols and the duration of short data symbols in one time division multiplexed OFDM are fixed or different;
  • the time division multiplexed OFDM includes one or more measurement reference symbols in a data OFDM duration, or one or more measurement reference symbols and one short data symbol in a data OFDM duration;
  • the number of time division multiplexed measurement reference symbols and/or the number of frequency division multiplexed OFDM symbols are fixed or different.
  • the notification is performed by the third indication information.
  • the third indication information is notified by one or more of the following manners:
  • Notifying the time division multiplexed OFDM and the frequency division by downlink control information DCI command notification, and/or by higher layer signaling, and/or by notifying the beam ID of the reference symbol and the beam ID of the data symbol The number of multiplexed OFDM, and the number of measured reference symbols and the duration of short data symbols within a time division multiplexed OFDM.
  • the method when the third indication information is notified by notifying the beam ID of the measurement reference symbol and the beam ID of the data symbol, the method includes:
  • the receiving end determines all measurement reference symbols on the OFDM.
  • the data symbols are time division multiplexed, and the number of measurement reference symbols in the time division multiplexed OFDM is the number of corresponding measurement reference symbols on the OFDM, thereby obtaining the duration of the short data symbols;
  • the measurement reference symbol and the data symbol are frequency division multiplexed.
  • the set of beam IDs is notified by signaling, or is pre-agreed by the transmitting end and the receiving end; there is no intersection between different sets of beam IDs;
  • the beam ID of the measurement reference symbol includes a beam ID of all beam measurement reference ports carried on the measurement reference symbol.
  • the beam ID of the data symbol is notified by one or more of the following manners:
  • the transmitting measurement reference symbols and data symbols include:
  • the measurement reference symbol and the data symbol time domain do not overlap; the duration of one measurement reference symbol is less than or equal to the duration of one data symbol, and the subcarrier spacing of the measurement reference symbol is greater than or equal to the subcarrier spacing of the data symbol.
  • the duration of one measurement reference symbol is less than or equal to one data symbol duration, and the reference symbol is measured.
  • the carrier spacing is greater than or equal to the subcarrier spacing of the data symbols:
  • the subcarrier spacing of the measurement reference symbol is a parameter N/L times the data symbol subcarrier spacing, where L and N are both positive integers, and N represents an integer multiple of the number of subcarriers included in the data transmission minimum resource allocation unit. 0 ⁇ L ⁇ N.
  • X represents the number of data subcarriers in the bandwidth corresponding to the minimum CSI feedback unit, and the CSI feedback is obtained based on the measurement reference signal.
  • the parameter I is a positive integer.
  • the parameter where m1, m2 ⁇ ⁇ 0, 1 ⁇ , and m3 are integers.
  • the subcarrier spacing of the measurement reference symbol is less than or equal to a coherence bandwidth of the channel.
  • one or more measurement reference signals corresponding to the measurement reference symbol port are sent on one beam measurement reference OFDM symbol.
  • the ports are sent by frequency division code division multiplexing or frequency division.
  • one of the beam measurement symbol ports corresponds to a different or the same hybrid beam on different resource cells of one beam measurement reference OFDM symbol;
  • the different hybrid beams are different baseband weighted hybrid beams for one fixed beam combination corresponding to the N antenna groups; the beam combination includes the beam direction of each antenna group; the resource lattice indicates that the duration is equal to the beam measurement reference OFDM symbol S-CSI-
  • the duration of OFDM occupancy, and the frequency domain width is the time-frequency resource frame formed by the sub-carrier spacing of S-CSI-OFDM.
  • the measurement reference symbol when the duration of one of the measurement reference symbols is less than one data symbol duration, the measurement reference symbol is a single carrier symbol, and when the data symbol is an OFDM symbol, it satisfies one or more of the following features.
  • the measurement reference symbol when the duration of one of the measurement reference symbols is less than one data symbol duration, the measurement reference symbol is a single carrier symbol, and when the data symbol is an OFDM symbol, it satisfies one or more of the following features.
  • the measurement reference signal sequence on port j is Wherein SL represents the length of the time domain signal sequence of the port j transmitted by the one single carrier measurement reference symbol;
  • the time interval between two signals in the time domain signal sequence is T gap , then,
  • T Data T CP, Data + T 1, Data , where T CP, Data represents the corresponding CP length on a data OFDM symbol; T 1, Data represents the length of time occupied by valid data of a data symbol, when a transmission unit When there are multiple data symbols in the duration, T 1, Data refers to the longest data symbol duration;
  • L and N are both positive integers, and N is an integer multiple of the number of subcarriers included in the data transmission minimum resource allocation unit, and 0 ⁇ L ⁇ N.
  • the parameter I is a positive integer.
  • the parameter where m1, m2 ⁇ ⁇ 0, 1 ⁇ , and m3 are integers.
  • the duration of one of the single carrier measurement reference symbols is less than or equal to the coherence time of the channel.
  • one single carrier measurement reference symbol carries one or more beam measurement ports; one beam measurement port corresponds to one hybrid beam, and the hybrid beam remains unchanged in a system bandwidth occupied by the single carrier symbol.
  • the multiple beam measurement ports correspond to different hybrid beams; different hybrid beams corresponding to different beam measurement ports are different baseband weighted hybrid beams of one fixed beam combination corresponding to N antenna groups; Contains the beam for each antenna group.
  • the measurement reference signal sequences corresponding to the multiple beam measurement ports are orthogonal to each other.
  • the measurement reference signal sent on one of the single carrier measurement reference symbols satisfies the following characteristics:
  • the measurement reference signal sequence corresponding to the beam measurement port j satisfies:
  • the measurement reference signal sequence corresponding to different port j1 and port j2 satisfies:
  • P measurement reference symbols are included, and P measurement reference symbols are in one of the transmission units;
  • the P value is indicated by one or more of the following:
  • all P measurement reference symbols are located in the last bit of one transmission unit in one transmission unit, and there is no data symbol between P measurement reference symbols, and there is no data symbol after P measurement reference symbols in one transmission unit.
  • the method includes:
  • Btotal is a positive integer
  • Btotal represents the total number of beams that need to be sent to complete a beam scanning measurement on a frequency domain resource
  • Q represents a beam that can be simultaneously transmitted on one measurement reference symbol on the one frequency domain resource. Number.
  • the time domain relationship pattern of the P measurement reference symbols and the data symbols in one beam measurement period satisfies one of the following characteristics:
  • the pattern of the subframe time domain structure formed by the measurement reference symbol and the data symbol is fixed; or, there are multiple sets of patterns, and one or more sets are selected by the indication information.
  • the different hybrid beams are different baseband weighted hybrid beams of one fixed beam combination corresponding to the N antenna groups;
  • the beam direction of each antenna group in the beam combination is the beam direction of the antenna group, which is specifically expressed as: among them, Indicates a pattern corresponding to the jth mixed beam; Indicates a beam pattern corresponding to the i-th antenna group, the direction of which is the direction of the beam group; the beam combination of the antenna group represents a beam pattern combination of the N antenna groups, which is a combination of the following:
  • the baseband weighting adjustment scalar corresponding to the i-th antenna group corresponding to the j-th hybrid beam, and the baseband weighting vector corresponding to the j-th hybrid beam is:
  • the AFRF ( ⁇ ) corresponding to different hybrid beams of different baseband weights of corresponding one fixed beam combination of the N antenna groups is the same, different.
  • the determined multiplexing pattern category displays the multiplexing category as the third type multiplexing mode
  • demodulating the reference signal in the data transmission unit that does not measure the reference symbol and the transmission unit that has the measurement reference symbol are different.
  • all measurement reference symbols in one transmission unit have no data between the beam measurement reference symbols in the last bit of the transmission unit, and there is no data symbol after the measurement reference symbols in the transmission unit.
  • the measurement reference signal corresponding to one or more measurement reference ports is transmitted on one OFDM symbol by frequency division multiplexing.
  • An embodiment of the present invention further provides a method for implementing measurement reference symbol transmission, including:
  • the receiving end determines the multiplexing pattern category of the measurement reference symbol and the data symbol in the transmission unit that needs to transmit the measurement reference symbol;
  • the receiving end receives the measurement reference symbols and the data symbols according to the determined multiplexing pattern category.
  • the transmission unit that needs to send the measurement reference symbol is:
  • the transmission unit in which the aperiodic beam measurement reference symbol of the dynamic signaling is located.
  • the determining the multiplexing pattern category of the measurement reference symbol and the data symbol comprises:
  • the receiving end and the transmitting end pre-agreed a multiplexing pattern category;
  • the receiving end invisibly notifying a set of multiplexing pattern categories according to relevant time domain parameters of the transmission unit;
  • the receiving end receives the signaling from the transmitting end to notify the learned multiplexing pattern category.
  • the multiplexing pattern categories of the measurement reference symbols and the data symbols include:
  • the first type of multiplexing mode all measurement reference symbols and data symbols are time division multiplexed; the receiving end performs time domain interpolation on channel estimation values obtained by different demodulation reference signal ports on different OFDM symbols;
  • all measurement reference symbols and data symbols are frequency division multiplexed; the receiving end time-domain interpolates channel estimation values obtained by different demodulation reference signal ports on different OFDM symbols;
  • a third type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; and all demodulation reference signal ports occupy a resource element RE on all OFDMs having measurement reference symbols, and have measurement reference symbols Between different OFDMs, or between OFDM with measured reference symbols and OFDM without measured reference symbols, different demodulation reference signal ports can only be multiplexed in the time domain if the code division multiplexing can only be in the frequency domain;
  • the same demodulation reference signal port at the receiving end may not interpolate the channel estimation value between different OFDMs with measurement reference symbols, and the channel estimation between the same demodulation reference signal port between OFDM with measurement reference symbols and OFDM without measurement reference symbols The value may not be interpolated in the time domain, and the same demodulation reference signal port may perform time domain interpolation on the channel estimation value between OFDM without the reference symbol;
  • the fourth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbols use the first signaling to indicate the measurement reference symbol port whose transmission power is 0 or the transmission power corresponding to the measurement reference symbol port.
  • the fifth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the second signaling indicates that the data symbol transmission power is 0 OFDM symbol index; the receiving end pair is the same demodulation reference signal port Time domain interpolation of channel estimation values obtained on different OFDM symbols;
  • a sixth type of multiplexing mode partial measurement reference symbols and data symbols time division multiplexing, partial measurement reference symbols and data symbols frequency division multiplexing; and demodulation reference signals only on frequency division multiplexed OFDM or not Measuring reference signal on OFDM; measuring reference symbol measurement reference The number receiving end can interpolate the channel estimation values obtained on different OFDM symbols by the same demodulation reference signal port.
  • the measurement reference signal corresponding to one measurement reference port is only one frequency division multiplexed OFDM symbol. Send on, or only on a time-division multiplexed measurement reference symbol.
  • the multiplexing pattern category of the measurement reference symbol and the data symbol is a first type multiplexing mode and/or a sixth type multiplexing mode
  • the sum of the durations of one or more of the time division multiplexed measurement reference symbols is equal to the duration of one data symbol; or the sum of the duration of one or more of the time division multiplexed measurement reference symbols and the duration of one short data symbol is equal to The length of a long data symbol.
  • the transmission unit pattern further satisfies: carrying a beam measurement reference symbol in a frequency division multiplexing manner on a long data symbol in the transmission unit.
  • the multiplexing pattern category of the measurement reference symbol and the data symbol is the sixth type multiplexing mode
  • the number of time division multiplexed OFDM and/or frequency division multiplexed OFDM is fixed or different; the number of measurement reference symbols and the duration of short data symbols in one time division multiplexed OFDM are fixed or different ;
  • the time division multiplexed OFDM includes one or more measurement reference symbols in a data OFDM duration, or one or more measurement reference symbols and one short data symbol in a data OFDM duration;
  • the number of time division multiplexed measurement reference symbols and/or the number of frequency division multiplexed OFDM symbols are fixed or different.
  • the notification is performed by the third indication information.
  • the third indication information is notified by one or more of the following manners:
  • Notifying the time division multiplexed OFDM and the frequency by downlink control information DCI command notification, and/or by higher layer signaling, and/or by notifying the beam ID of the reference symbol and the beam ID of the data symbol The number of multiplexed OFDMs, and the number of measured reference symbols and the duration of short data symbols in a time division multiplexed OFDM.
  • the method when the third indication information is notified by notifying the beam ID of the measurement reference symbol and the beam ID of the data symbol, the method includes:
  • the transmitting end determines all the OFDM Measuring reference symbols and data symbols are time division multiplexed, and the number of measurement reference symbols in the time division multiplexed OFDM is the number of corresponding measurement reference symbols on the OFDM to obtain the duration of the short data symbols;
  • the measurement reference symbol and the data symbol are frequency division multiplexed.
  • the set of beam IDs is notified by signaling, or is pre-agreed by the transmitting end and the receiving end; there is no intersection between different sets of beam IDs;
  • the beam ID of the measurement reference symbol includes a beam ID of all beam measurement reference ports carried on the measurement reference symbol.
  • the beam ID of the data symbol is notified by one or more of the following manners:
  • the receiving measurement reference symbols and data symbols include:
  • the measurement reference symbol and the data symbol time domain do not overlap; the duration of one measurement reference symbol is less than or equal to the duration of one data symbol, and the subcarrier spacing of the measurement reference symbol is greater than or equal to the subcarrier spacing of the data symbol.
  • the duration of one measurement reference symbol is less than or equal to one data symbol duration
  • the subcarrier spacing of the measurement reference symbol is greater than or equal to the subcarrier spacing of the data symbol.
  • the subcarrier spacing of the measurement reference symbol is a parameter N/L times the data symbol subcarrier spacing, where L and N are both positive integers, and N represents an integer multiple of the number of subcarriers included in the data transmission minimum resource allocation unit. 0 ⁇ L ⁇ N.
  • X represents the number of data subcarriers in the bandwidth corresponding to the minimum CSI feedback unit, and the CSI feedback is obtained based on the measurement reference signal.
  • the parameter I is a positive integer.
  • the parameter where m1, m2 ⁇ ⁇ 0, 1 ⁇ , and m3 are integers.
  • the subcarrier spacing of the measurement reference symbol is less than or equal to a coherence bandwidth of the channel.
  • one or more measurement reference signals corresponding to the measurement reference symbol port are sent on one beam measurement reference OFDM symbol.
  • the ports are sent by frequency division code division multiplexing or frequency division.
  • one of the beam measurement symbol ports corresponds to a different or the same hybrid beam on different resource cells of one beam measurement reference OFDM symbol;
  • the different hybrid beams are different baseband-weighted hybrid beams of one fixed beam combination corresponding to the N antenna groups; the beam combination includes the beam direction of each antenna group; the resource cell indicates that the duration is equal to the duration of the S-CSI-OFDM occupation.
  • Subcarriers with frequency domain width S-CSI-OFDM The time-frequency resource grid formed by the interval.
  • the measurement reference symbol is a single carrier symbol
  • the data symbol is an OFDM symbol
  • the measurement reference signal sequence on port j is Wherein SL represents the length of the time domain signal sequence of the port j transmitted by the one single carrier measurement reference symbol;
  • the time interval between two signals in the time domain signal sequence is T gap , then,
  • T Data T CP, Data + T 1, Data , where T CP, Data represents the corresponding CP length on a data OFDM symbol; T 1, Data represents the length of time occupied by valid data of a data symbol, when a transmission unit When there are multiple data symbols in the duration, T 1, Data refers to the longest data symbol duration;
  • T CSI ⁇ T Data Where T CSI ⁇ T Data ; Where L and N are both positive integers, and N is an integer multiple of the number of subcarriers included in the data transmission minimum resource allocation unit, and 0 ⁇ L ⁇ N.
  • the parameter I is a positive integer.
  • the parameter where m1, m2 ⁇ ⁇ 0, 1 ⁇ , and m3 are integers.
  • the duration of one of the single carrier measurement reference symbols is less than or equal to the coherence time of the channel.
  • one single carrier measurement reference symbol carries one or more beam measurement ports; one beam measurement port corresponds to one hybrid beam, and the hybrid beam remains unchanged in a system bandwidth occupied by the single carrier symbol.
  • the multiple beam measurement ports correspond to different hybrid beams; different hybrid beams corresponding to different beam measurement ports are different baseband weighted hybrid beams of one fixed beam combination corresponding to N antenna groups; Contains the beam for each antenna group.
  • the measurement reference signal sequences corresponding to the multiple beam measurement ports are orthogonal to each other.
  • the measurement reference signal sent on one of the single carrier measurement reference symbols satisfies the following characteristics:
  • the measurement reference signal sequence corresponding to the beam measurement port j satisfies:
  • the measurement reference signal sequence corresponding to different port j1 and port j2 satisfies:
  • P measurement reference symbols are included, and P measurement reference symbols are in one of the transmission units;
  • the P value is indicated by one or more of the following:
  • all P measurement reference symbols are located in the last bit of one transmission unit in one transmission unit, and there is no data symbol between P measurement reference symbols, and there is no data symbol after P measurement reference symbols in one transmission unit.
  • the method includes:
  • Btotal is a positive integer
  • Btotal represents the total number of beams that need to be sent to complete a beam scanning measurement on a frequency domain resource
  • Q represents a beam that can be simultaneously transmitted on one measurement reference symbol on the one frequency domain resource. Number.
  • the time domain relationship pattern of the P measurement reference symbols and the data symbols in one beam measurement period satisfies one of the following characteristics:
  • the pattern of the time domain structure of the subframe formed by the measurement reference symbol and the data symbol is fixed; or,
  • the different hybrid beams are different baseband weighted hybrid beams of one fixed beam combination corresponding to the N antenna groups;
  • the beam direction of each antenna group in the beam combination is the beam direction of the antenna group, which is specifically expressed as: among them, Indicates a pattern corresponding to the jth mixed beam; Indicates a beam pattern corresponding to the i-th antenna group, the direction of which is the direction of the beam group; the beam combination of the antenna group represents a beam pattern combination of the N antenna groups, which is a combination of the following:
  • the baseband weighting adjustment scalar corresponding to the i-th antenna group corresponding to the j-th hybrid beam, and the baseband weighting vector corresponding to the j-th hybrid beam is:
  • the AFRF ( ⁇ ) corresponding to different hybrid beams of different baseband weights of corresponding one fixed beam combination of the N antenna groups is the same, different.
  • the determined multiplexing pattern category displays the multiplexing category as the third type multiplexing mode
  • demodulating the reference signal in the data transmission unit that does not measure the reference symbol and the transmission unit that has the measurement reference symbol are different.
  • all beam measurement reference symbols in one transmission unit are at the last bit of the transmission unit, there is no data between the beam measurement reference symbols, and there is no data symbol after the beam measurement reference symbol.
  • the measurement reference signal corresponding to one or more measurement reference ports is transmitted on one OFDM symbol.
  • An embodiment of the present invention further provides an apparatus for implementing measurement reference symbol transmission, including a first determining unit, a first processing unit, where
  • a first determining unit configured to determine, in a transmission unit that has a measurement reference symbol to be transmitted, a multiplexing pattern category of the measurement reference symbol and the data symbol;
  • the first processing unit is configured to transmit the measurement reference symbols and the data symbols according to the determined multiplexing pattern category.
  • the first determining unit is specifically configured to: pre-approve a multiplexing pattern category; or a set of multiplexing pattern categories that are invisibly notified according to relevant time domain parameters of the transmission unit; or, according to current needs
  • a multiplexing pattern category determined by the result of whether the data beam and the measurement beam correspond to the direction of the radio beam direction, and is notified to the receiving end by signaling.
  • the first processing module is specifically configured to: the measurement reference symbol and the data symbol do not overlap in time domain; the duration of one measurement reference symbol is less than or equal to the duration of one data symbol, and the subcarrier spacing of the measurement reference symbol is greater than or equal to Subcarrier spacing of data symbols.
  • the multiplexing pattern categories of the measurement reference symbols and the data symbols include:
  • the first type of multiplexing all measurement reference symbols and data symbols are time-division multiplexed;
  • the second type of multiplexing all measurement reference symbols and data symbols are frequency division multiplexed;
  • a third type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; and all demodulation reference signal ports occupy a resource element RE on all OFDMs having measurement reference symbols, and have measurement reference symbols Between different OFDMs, or between OFDM with measured reference symbols and OFDM without measured reference symbols, different demodulation reference signal ports can only be multiplexed in the time domain if the code division multiplexing can only be in the frequency domain;
  • the fourth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbols use the first signaling to indicate the measurement reference symbol port whose transmission power is 0 or the transmission power corresponding to the measurement reference symbol port.
  • the fifth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; and the second signaling indicates that the data symbol transmission power is 0 OFDM symbol index;
  • a sixth type of multiplexing mode partial measurement reference symbols and data symbols time division multiplexing, partial measurement reference symbols and data symbols frequency division multiplexing; and demodulation reference signals only on frequency division multiplexed OFDM or not Measure the OFDM on the reference signal.
  • the measurement reference signal corresponding to one measurement reference port is only one frequency division multiplexed OFDM symbol. Send on, or only on a time-division multiplexed measurement reference symbol.
  • the frequency division multiplexing is: measuring frequency division multiplexing of reference symbols and data symbols on OFDM with measurement reference symbols; the transmission unit memory There is no OFDM symbol that measures the reference symbol only data symbols.
  • the transmission unit that needs to send the measurement reference symbol includes:
  • the transmission unit is a transmission unit in which the periodic beam measurement reference symbol of the upper layer notification is located;
  • the transmission unit is a transmission unit in which the aperiodic beam measurement reference symbol of the dynamic signaling is located.
  • the transmission unit pattern satisfies the following characteristics:
  • the sum of the durations of one or more time division multiplexed measurement reference symbols is equal to the duration of one data symbol, or the sum of the duration of one or more time division multiplexed measurement reference symbols and the duration of one short data symbol is equal to one long data symbol The length of time.
  • the transmission unit pattern further satisfies: carrying a beam measurement reference symbol in a frequency division multiplexing manner on a long data symbol in the transmission unit.
  • the multiplexing pattern category of the measurement reference symbol and the data symbol is the sixth type multiplexing mode
  • the number of time division multiplexed OFDM and/or frequency division multiplexed OFDM is fixed or different; the number of measurement reference symbols and the duration of short data symbols in one time division multiplexed OFDM are fixed or different ;
  • the time division multiplexed OFDM includes one or more measurement reference symbols in a data OFDM duration, or one or more measurement reference symbols and one short data symbol in one data OFDM duration; or all beams
  • the number of time division multiplexed measurement reference symbols and/or the number of frequency division multiplexed OFDM symbols are fixed or different. When not, the notification can be made by signaling.
  • An embodiment of the present invention further provides an apparatus for implementing measurement reference symbol transmission, including a second Determining unit, second processing unit; wherein
  • a second determining unit configured to determine, in a transmission unit that has a measurement reference symbol to be transmitted, a multiplexing pattern category of the measurement reference symbol and the data symbol;
  • the second processing unit is configured to receive the measurement reference symbols and the data symbols in accordance with the determined multiplexing pattern category.
  • the second determining unit is specifically configured to: pre-agreed a multiplexing pattern category; or a set of multiplexing pattern categories that are invisibly notified according to relevant time domain parameters of the transmission unit; or receive a letter from the sending end The type of reuse pattern that informs the notification.
  • the second processing module is specifically configured to: the measurement reference symbol and the data symbol do not overlap in time domain; the duration of one measurement reference symbol is less than or equal to the duration of one data symbol, and the subcarrier spacing of the measurement reference symbol is greater than or equal to Subcarrier spacing of data symbols.
  • the multiplexing pattern categories of the measurement reference symbols and the data symbols are:
  • the first type of multiplexing mode all measurement reference symbols and data symbols are time division multiplexed; time domain interpolation is performed on channel estimation values obtained by different demodulation reference signal ports on different OFDM symbols;
  • all measurement reference symbols and data symbols are frequency division multiplexed; the receiving end time-domain interpolates channel estimation values obtained by different demodulation reference signal ports on different OFDM symbols;
  • a third type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; and all demodulation reference signal ports occupy a resource element RE on all OFDMs having measurement reference symbols, and have measurement reference symbols Between different OFDMs, or between OFDM with measured reference symbols and OFDM without measured reference symbols, different demodulation reference signal ports can only be multiplexed in the time domain if the code division multiplexing can only be in the frequency domain;
  • the device has the same demodulation reference signal port.
  • the channel estimation value between different OFDMs with measurement reference symbols may not be time domain interpolated, and the same demodulation reference signal port is between the OFDM with the measurement reference symbol and the channel with no measurement reference symbol OFDM.
  • the estimated value may not be time domain interpolated, and the same demodulation reference signal port may perform time domain interpolation on the channel estimation value between OFDM without the reference symbol;
  • the fourth type of multiplexing all measurement reference symbols and data symbols are frequency division multiplexed;
  • the quantity reference symbol uses the first signaling to indicate a measurement reference symbol port whose transmission power is 0 or an OFDM symbol index whose transmission reference power port corresponds to a transmission power of 0; at this time, the apparatus has the same demodulation reference signal port in different OFDM symbols.
  • the channel estimation value on the time domain is interpolated;
  • a fifth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbols use a second signaling to indicate an OFDM symbol index with a data symbol transmission power of 0; Performing time domain interpolation on channel estimation values of demodulation reference signal ports on different OFDM symbols;
  • a sixth type of multiplexing mode partial measurement reference symbols and data symbols time division multiplexing, partial measurement reference symbols and data symbols frequency division multiplexing; and demodulation reference signals only on frequency division multiplexed OFDM or not Measuring the reference signal on the OFDM; measuring the reference symbol measurement reference symbol receiving end can interpolate the channel estimation values obtained on the different OFDM symbols by the same demodulation reference signal port.
  • the measurement reference signal corresponding to one measurement reference port is only one frequency division multiplexed OFDM symbol. Send on, or only on a time-division multiplexed measurement reference symbol.
  • the transmission unit that needs to send the measurement reference symbol includes:
  • the transmission unit is a transmission unit in which the periodic beam measurement reference symbol of the upper layer notification is located;
  • the transmission unit is a transmission unit in which the aperiodic beam measurement reference symbol of the dynamic signaling is located.
  • the transmission unit pattern satisfies the following characteristics:
  • the sum of the durations of one or more time division multiplexed measurement reference symbols is equal to the duration of one data symbol; or the sum of the duration of one or more time division multiplexed measurement reference symbols and the duration of one short data symbol is equal to one long data symbol The length of time.
  • the transmission unit pattern further satisfies: a long data symbol in the transmission unit
  • the beam measurement reference symbols are carried in a frequency division multiplexing manner.
  • the measurement reference signal corresponding to one measurement reference port is only one frequency division multiplexed OFDM symbol. Send on, or only on a time-division multiplexed measurement reference symbol.
  • the embodiment of the present invention further provides a transmitting end, including: a first processor; a first memory configured to store the first processor executable instruction; and configured to perform information transmission and reception according to the control of the first processor a first transmission device for communication;
  • the first processor is configured to perform an operation in the method of implementing the measurement reference symbol transmission by the transmitting end.
  • the embodiment of the present invention further provides a receiving end, including: a second processor; a second memory configured to store the second processor executable instruction; and configured to perform information transmission and reception according to the control of the second processor a second transmission device for communication;
  • the second processor is configured to perform an operation in the method of implementing the measurement reference symbol transmission at the receiving end.
  • Embodiments of the present invention further provide a computer storage medium arranged to store a computer program configured to perform the above-described method of implementing measurement reference symbol transmission.
  • the technical solution of the present application includes: determining, in a transmission unit that needs to transmit a measurement reference symbol, a multiplexing pattern category of the measurement reference symbol and the data symbol; and transmitting and receiving the measurement reference symbol according to the determined multiplexing pattern category.
  • Data symbol the measurement reference symbol and the data symbol are sent and received according to the determined multiplexing reference pattern of the measurement reference symbol and the data symbol, and the RF beam direction requirement of the limited RF link of the measurement beam and the data beam is solved.
  • Conflict issue In particular, when the determined multiplexing reference symbols of the measurement reference symbols and the data symbols are displayed as time division multiplexing, the collision problem between the measurement beam and the data beam for the radio beam direction requirements of the limited radio frequency link is effectively avoided.
  • FIG. 1 is a flowchart of a method for implementing measurement of reference symbol transmission according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a first embodiment of measuring a time domain relationship pattern of reference signals and data symbols according to the present invention
  • FIG. 4 is a schematic diagram of a second embodiment of measuring a time domain relationship pattern of reference signals and data symbols according to the present invention.
  • FIG. 5 is a schematic diagram of a third embodiment of measuring a time domain relationship pattern of reference signals and data symbols according to the present invention.
  • FIG. 6 is a schematic diagram of a fourth embodiment of measuring a time domain relationship pattern of reference signals and data symbols according to the present invention.
  • 25 is a structural diagram of an embodiment of a time domain period in which a measurement reference signal is periodically transmitted according to the present invention.
  • 26 is a schematic diagram of different embodiments of radio frequency beam patterns of respective radio frequency links according to the present invention.
  • 27 is a schematic diagram of an embodiment of a measurement of a reference symbol on a resource frame corresponding to different radio frequency link beam patterns
  • 29 is a schematic diagram of an embodiment of a time domain single carrier symbol structure according to the present invention.
  • FIG. 30 is a schematic diagram of a first embodiment of a subframe structure of a measurement reference signal transmission unit according to the present invention.
  • FIG. 31 is a schematic diagram of a second embodiment of a subframe structure of a measurement reference signal transmission unit according to the present invention.
  • FIG. 32 is a schematic diagram of a third embodiment of a subframe structure of a measurement reference signal transmission unit according to the present invention.
  • FIG. 33 is a schematic diagram of measuring frequency division multiplexing of reference signals and data symbols according to an embodiment of the present invention.
  • FIG. 34 is a schematic diagram of an OFDM pattern for measuring frequency division multiplexing of reference signals and data symbols according to an embodiment of the present invention.
  • Figure 35 (a) is a schematic diagram showing a first embodiment of a pattern of measurement reference symbols and demodulation reference symbols in the third type of multiplexing class of the present invention
  • Figure 35 (b) is a schematic diagram showing a second embodiment of a pattern of measurement reference symbols and demodulation reference symbols in the third type of multiplexing class of the present invention.
  • Figure 35 (c) is a schematic diagram showing a third embodiment of a pattern of measurement reference symbols and demodulation reference symbols in the third type of multiplexing class of the present invention.
  • Figure 35 (d) is a schematic diagram showing a fourth embodiment of a pattern of measurement reference symbols and demodulation reference symbols in the third type of multiplexing class of the present invention.
  • Figure 35 (e) is a schematic diagram showing a fifth embodiment of a pattern of measurement reference symbols and demodulation reference symbols in the third type of multiplexing class of the present invention.
  • Figure 35 (f) is a schematic diagram showing a sixth embodiment of a pattern of measurement reference symbols and demodulation reference symbols in the third type of multiplexing class of the present invention.
  • FIG. 36 is a schematic diagram of an embodiment of a beam measurement reference port transmitting a pattern on only one measurement reference symbol during time division multiplexing.
  • FIG. 37 is a schematic structural diagram of a device for implementing measurement of reference symbol transmission according to an embodiment of the present invention.
  • FIG. 38 is a schematic structural diagram of another component of an apparatus for implementing measurement reference symbol transmission according to an embodiment of the present invention.
  • 39 is a schematic diagram of a first embodiment of measuring a reference symbol at the last bit of a transmission unit according to the present invention.
  • FIG. 40 is a schematic diagram of a second embodiment of measuring a reference symbol at the last bit of a transmission unit according to the present invention.
  • Figure 41 is a schematic illustration of a third embodiment of the measurement reference symbol at the last bit of the transmission unit of the present invention.
  • FIG. 1 is a flowchart of a method for implementing measurement reference symbol transmission according to an embodiment of the present invention. As shown in FIG. 1 , the method includes:
  • Step 100 Determine a multiplexing pattern category of the measurement reference symbol and the data symbol in a transmission unit having a measurement reference symbol to be transmitted.
  • the transmission unit in which the aperiodic beam measurement reference symbol of the dynamic signaling is located.
  • the sender and the receiver pre-agreed a type of multiplexing pattern; or,
  • class_t mod(n f1 *20 +n f , 6)
  • the receiving end receives the signaling from the transmitting end to notify the learned multiplexing pattern category.
  • the multiplexing pattern category of the measurement reference symbol and the data symbol may include:
  • the first type of multiplexing mode all measurement reference symbols and data symbols are time division multiplexed; and the demodulation reference signal can be on the data symbols, and different demodulation reference signal ports can be multiplexed in the time domain code division;
  • the second type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; and the demodulation reference signal and the measurement reference symbol can be frequency division multiplexed on the same OFDM, and different demodulation reference signal ports can be Time division code division multiplexing;
  • a third type of multiplexing all measurement reference symbols and data symbols are frequency division multiplexed; All demodulation reference signal ports occupy between a resource element (RE, Resource element) and a different OFDM with measured reference symbols on all OFDMs with measurement reference symbols, or OFDM with and without measurement reference symbols Between different demodulation reference signal ports, if code division multiplexing can only be in the frequency domain, not in the time domain code division multiplexing;
  • All demodulation reference signal ports occupy between a resource element (RE, Resource element) and a different OFDM with measured reference symbols on all OFDMs with measurement reference symbols, or OFDM with and without measurement reference symbols.
  • the fourth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; and the demodulation reference signal and the measurement reference symbols can be frequency division multiplexed on the same OFDM, and different demodulation reference signal ports can be In the time domain code division multiplexing; the measurement reference symbol may use the first signaling to indicate a measurement reference symbol port with a transmission power of 0 or an OFDM symbol index with a transmission power of 0 corresponding to the measurement reference symbol port;
  • the fifth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; and the demodulation reference signal and the measurement reference symbols can be frequency division multiplexed on the same OFDM, and different demodulation reference signal ports can be In the time domain code division multiplexing; the measurement reference symbol may use an OFDM symbol index indicating that the data symbol transmission power is 0;
  • a sixth type of multiplexing mode partial measurement reference symbols and data symbols time division multiplexing, partial measurement reference symbols and data symbols frequency division multiplexing; and demodulation reference signals only on frequency division multiplexed OFDM or not Measuring OFDM on the reference signal; on the OFDM measuring the reference symbol and the data symbol frequency division multiplexing, the demodulation reference signal and the measurement reference symbol can be frequency division multiplexed on the same OFDM; different demodulation reference signal ports can be in time Domain code division multiplexing.
  • the frequency division multiplexing is: measuring frequency division multiplexing of reference symbols and data symbols on OFDM having measured reference symbols;
  • the multiplexed pattern category of the reference symbol and the data symbol can be:
  • the first type of multiplexing all measurement reference symbols and data symbols are time division multiplexed; and the demodulation reference signal can be on the data symbols.
  • the receiving end may interpolate the channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols in time domain;
  • the second type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the channel estimates values obtained by the receiving end on different OFDM symbols by the same demodulation reference signal port Interpolated in time domain;
  • the third type of administration all measurement reference symbols and data symbols are frequency division multiplexed; and all demodulation reference signal ports occupy REs on OFDM with measurement reference symbols, and measurement reference symbols occupy different OFDM between Or, between OFDM with measured reference symbols and OFDM without measured reference symbols, different demodulation reference signal ports can only be multiplexed in the time domain if the code division multiplexing can only be in the frequency domain.
  • the same demodulation reference signal port on the receiving end may not interpolate the channel estimation value between different OFDMs with measurement reference symbols, and the same demodulation reference signal port is between the OFDM with the measurement reference symbol and the OFDM without the measurement reference symbol.
  • the channel estimation value may not be time domain interpolated, and the same demodulation reference signal port may perform time domain interpolation on the channel estimation value between OFDM without measurement reference symbols;
  • the fourth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbols may use the first signaling to indicate that the measurement reference symbol port with the transmission power is 0 or the measurement reference symbol port transmission power is 0 OFDM symbol index.
  • the receiving end performs time domain interpolation on channel estimation values obtained by different demodulation reference signal ports on different OFDM symbols;
  • the fifth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbols may use an OFDM symbol index indicating that the data symbol transmission power is 0.
  • the receiving end performs time domain interpolation on channel estimation values obtained by different demodulation reference signal ports on different OFDM symbols;
  • a sixth type of multiplexing mode partial measurement reference symbols and data symbols time division multiplexing, partial measurement reference symbols and data symbols frequency division multiplexing; and demodulation reference signals only on frequency division multiplexed OFDM or not Measuring the reference signal on the OFDM; measuring the reference symbol measurement reference symbol receiving end can interpolate the channel estimation values obtained on the different OFDM symbols by the same demodulation reference signal port.
  • Different types of multiplexing patterns are different.
  • the signaling that the transmitting end needs to notify is different.
  • the demodulation reference signal pattern sent by the transmitting end is different, and the multiplexing mode of different demodulation reference signal ports is different.
  • the measurement reference signal corresponding to one measurement reference port is sent only on one frequency division multiplexed OFDM symbol, or only A time division multiplexed measurement reference symbol is sent.
  • Frequency division multiplexing transmits one or more measurement reference signals corresponding to the measurement reference ports on one OFDM symbol, and the plurality of measurement reference ports are transmitted by using frequency domain code division and/or frequency division multiplexing.
  • the transmission unit pattern satisfies the following characteristics:
  • the sum of the durations of one or more time division multiplexed measurement reference symbols is equal to the duration of one data symbol.
  • the time domain occupied by one or more measurement reference symbols is referred to as a time division multiplexed OFDM; or one or more time divisions
  • the sum of the length of the multiplexed measurement reference symbol and the duration of one short data symbol is equal to the length of one long data symbol.
  • the measurement reference signal may also be carried in a frequency division multiplexing manner on the short data symbol.
  • the time domain occupied by one or more measurement reference symbols and one short data symbol is referred to as a time division multiplexed OFDM.
  • the time domain is equal to the time domain length corresponding to the minimum unit of the resource scheduling, and the frequency domain corresponds to all system bandwidths.
  • the transmission unit pattern further satisfies: carrying the beam measurement reference symbols in a frequency division multiplexing manner on the short data symbols in the transmission unit.
  • the multiplexing pattern category of the measurement reference symbol and the data symbol is the sixth type multiplexing mode
  • the number of time division multiplexed OFDM and frequency division multiplexed OFDM may be fixed or different, and the number of measurement reference symbols and the duration of short data symbols in one time division multiplexed OFDM may be fixed, ie, the same or different.
  • the third indication information may be used for notification.
  • the third indication information when it is required to use the third indication information to notify the time division multiplexing OFDM number and the frequency division multiplexing OFDM number, and the number of measurement reference symbols in one time division multiplexing OFDM, the third indication information may be in one of the following manners. Or multiple notifications:
  • Time-division multiplexing OFDM is notified invisibly by downlink control information (DCI, Downlink Control Information) command notification, and/or by higher layer signaling, and/or by notifying the beam ID of the reference symbol and the beam ID of the data symbol.
  • DCI Downlink Control Information
  • higher layer signaling and/or by notifying the beam ID of the reference symbol and the beam ID of the data symbol.
  • the number of time division multiplexed OFDM and frequency division multiplexed OFDM is invisibly notified, and the number of measurement reference symbols and the short data symbol in one time division multiplexed OFDM Duration, including:
  • the transmitting end assumes that all measurement reference signals are transmitted in a frequency division multiplexing manner. If the OFDM on which the reference symbol is measured, at least one beam ID of the measurement reference symbol and the beam ID of the data symbol on the OFDM do not belong to any When a set of the same beam ID is used, the transmitting end determines that all measurement reference symbols and data symbols on the OFDM are transmitted in a time division multiplexing manner, that is, the duration occupied by one long data OFDM symbol is divided into one or more time division multiplexing measurements. The reference symbol is divided into one or more time division multiplexed measurement reference symbols and one short data symbol.
  • the time domain corresponding to the long data symbol occupies is simply referred to as a time division multiplexed OFDM, and time division multiplexed OFDM.
  • the number of measurement reference symbols is the number of corresponding measurement reference symbols on the OFDM, thereby obtaining the duration of the short data symbols.
  • the measurement reference symbol and the data symbol are frequency division multiplexed. among them,
  • the set of beam IDs may be signaled or may be pre-agreed by the sender and the receiver. There is no intersection between different beam ID sets.
  • the beam ID of the measurement reference symbol contains all beam measurements carried on the measurement reference symbol The beam ID of the reference port.
  • the receiving end assumes that all measurement reference signals are transmitted in a frequency division multiplexing manner. If the OFDM on which the reference symbol is measured, at least one beam ID of the measurement reference symbol and the beam ID of the data symbol on the OFDM are not arbitrary. When a set of the same beam ID is used, the receiving end determines that the measurement reference symbol and the data symbol are time division multiplexed, and the number of measurement reference symbols in the time division multiplexed OFDM is the corresponding number of measurement reference symbols on the OFDM. In turn, the duration of the short data symbols is obtained. On the OFDM where the measurement reference symbol is located, when the beam ID of the measurement reference symbol and the beam ID of the data symbol on the OFDM belong to the same beam ID set, the measurement reference symbol and the data symbol are frequency division multiplexed. among them,
  • the set of beam IDs may be signaled or may be pre-agreed by the sender and the receiver. There is no intersection between different beam ID sets.
  • the beam ID of the measurement reference symbol includes the beam ID of all beam measurement reference ports carried on the measurement reference symbol.
  • the beam ID of the reference port is adjusted, and all demodulation reference port beam IDs corresponding to the downlink data channel are beam IDs of the data symbols.
  • Step 101 Transceive measurement reference symbols and data symbols according to the determined multiplexing pattern category.
  • the transmission and reception measurement reference symbols and data symbols in this step include:
  • the time domain of the measurement reference symbol and the data symbol do not overlap, and the frequency domain completely overlaps; the duration of one measurement reference symbol is less than or equal to the duration of one data symbol, and the subcarrier spacing of the measurement reference symbol is greater than or equal to the subcarrier spacing of the data symbol.
  • All beam measurement reference symbols within a transmission unit are at the last bit of the transmission unit, there is no data between the measurement reference symbols, and there is no data symbol after the reference symbol is measured within the transmission unit.
  • the symbol in which the reference symbol is measured is an OFDM symbol
  • the different beam measurement reference ports are code division multiplexed, only the frequency domain code division multiplexing can be performed.
  • the duration of one measurement reference symbol is less than or equal to one data symbol duration
  • the subcarrier spacing of the measurement reference symbol is greater than or equal to the subcarrier spacing of the data symbol:
  • the duration of a measurement reference symbol includes a cyclic shift (CP) length
  • the duration of a data symbol includes the length of the CP, and when there are multiple data OFDM symbols with different durations in one transmission unit, the duration of the data symbol refers to the length of the data symbol with the longest duration in the transmission unit;
  • the subcarrier spacing of the measurement reference symbol is N/L times the data symbol subcarrier spacing, where L and N are both positive integers, and N represents an integer multiple of the number of subcarriers included in the minimum resource allocation unit of the data transmission, 0 ⁇ L ⁇ N.
  • X represents the number of data subcarriers in the bandwidth corresponding to the minimum CSI feedback unit, and the CSI feedback is obtained based on the measurement reference signal.
  • the subcarrier spacing of the measurement reference symbols refers to the data subcarrier spacing with the smallest subcarrier spacing.
  • the subcarrier spacing of the measurement reference symbols is less than or equal to the coherence bandwidth of the channel.
  • one measurement reference signal corresponding to one or more measurement reference symbol ports is transmitted on one beam measurement reference OFDM symbol (hereinafter referred to as S-CSI-OFDM).
  • the ports are transmitted in frequency domain code division multiplexing or frequency division manner;
  • one of the beam measurement symbol ports corresponds to a different or the same hybrid beam on different resource cells of one beam measurement reference OFDM symbol; wherein different hybrid beams are different basebands of one fixed beam combination corresponding to N antenna groups
  • the measurement reference symbol is a single carrier symbol
  • the data symbol is an OFDM symbol
  • the measurement reference signal sequence on port j is Wherein SL represents the length of the time domain signal sequence transmitted by the port j in the one single carrier measurement reference symbol, wherein the time interval between the two signals in the time domain signal sequence is Tgap , then
  • T Data T CP, Data + T 1, Data , where T CP, Data represents the corresponding CP length on a data OFDM symbol; T 1, Data represents the length of time occupied by valid data of a data symbol, when a transmission unit When there are multiple data symbols in the duration, T 1, Data refers to the longest data symbol duration;
  • L and N are both positive integers, and N is an integer multiple of the number of subcarriers included in the data transmission minimum resource allocation unit, and 0 ⁇ L ⁇ N.
  • m1,m2 ⁇ 0,1 ⁇ , and m3 are integers.
  • the duration of a single carrier measurement reference symbol is less than or equal to the coherence time of the channel.
  • One single carrier measurement reference symbol (S-CSI-Time Sequence for short) carries one or more beam measurement ports; one beam measurement port corresponds to one hybrid beam, and the hybrid beam is on the system bandwidth occupied by the single carrier symbol. constant.
  • the plurality of beam measurement ports correspond to different hybrid beams; the different hybrid beams corresponding to different beam measurement ports are different baseband weighted hybrid beams of one fixed beam combination corresponding to the N antenna groups; wherein the beam combination includes each antenna group Beam.
  • the measurement reference signal sequences corresponding to the plurality of beam measurement ports are orthogonal between each other.
  • the measurement reference signal transmitted on a single carrier measurement reference symbol (S-CSI-Time Sequence for short) satisfies the following characteristics:
  • the measurement reference signal sequence corresponding to one beam measurement port j satisfies:
  • the measurement reference signal sequence corresponding to different port j1 and port j2 satisfies:
  • P measurement reference symbols are included, and P measurement reference symbols are in one transmission unit.
  • the P value is indicated by one or more of the following:
  • all P measurement reference symbols in one transmission unit are located at the last bit of one transmission unit, there is no data symbol between P measurement reference symbols, and P measurement in one transmission unit There is no data symbol after the reference symbol.
  • Btotal is a positive integer
  • Btotal represents the total number of beams that need to be sent to complete a beam scanning measurement on a frequency domain resource
  • Q represents a beam that can be simultaneously transmitted on one measurement reference symbol on the one frequency domain resource. Number.
  • the pattern is fixed, that is, the time domain structure of the subframe formed by the measurement reference symbol and the data symbol is fixed; or,
  • the different hybrid beams are different baseband-weighted hybrid beams of one fixed beam combination corresponding to the N antenna groups; wherein, the beam direction of each antenna group in the beam combination is the beam direction of the antenna group, specifically for:
  • the beam combination of the antenna group represents a beam pattern combination of the N antenna groups, which is a combination of the following:
  • the baseband weighting adjustment scalar corresponding to the i-th antenna group corresponding to the j-th hybrid beam, and the baseband weighting vector corresponding to the j-th hybrid beam is:
  • the demodulation reference signal pattern is different in the data transmission unit that does not measure the reference symbol and the transmission unit that has the measurement reference symbol.
  • the measurement reference symbol and the data symbol are sent and received according to the determined multiplexing reference pattern of the reference symbol and the data symbol. Specifically, when the data beam direction and the measurement beam direction of one radio frequency link are different, the measurement reference symbols and the data symbols are time-divisionally transmitted, or the measurement signals are not transmitted, or the data signals are not transmitted, when the data beam of one radio frequency link When the direction and the direction of the measurement beam are the same, the reference symbol and the data symbol are measured for time division transmission or frequency division transmission.
  • the technical solution provided by the embodiment of the present invention solves the problem that the measurement beam and the data beam conflict with the radio beam direction requirement of the limited radio frequency link. In particular, when the determined multiplexing reference symbols of the measurement reference symbols and the data symbols are displayed as time division multiplexing, the collision problem between the measurement beam and the data beam for the radio beam direction requirements of the limited radio frequency link is effectively avoided.
  • the transmitting end has N radio frequency links, each radio frequency link is connected with M transmitting elements, and the nth radio frequency link is for digital baseband.
  • W n [w n1 w n2 ... w nM ] T
  • W n [w n1 w n2 ... w nM ] T
  • W n [w n1 w n2 ... w nM ] T
  • each radio frequency link can only generate one radio frequency beam on one OFDM symbol, and one radio frequency chain is needed in one measurement period. Multiple RF beams of the path are measured, and one or more RF beams need to be transmitted on one or more different measurement reference symbols.
  • One antenna group corresponds to one radio frequency link, or one antenna group corresponds to one baseband transmission port, and one baseband transmission port may correspond to multiple radio frequency links.
  • one measurement reference symbol is an OFDM symbol
  • the multiplexing manner of the measurement reference symbol and the data symbol is a first type of multiplexing manner, that is, in all transmission units having measurement beams to be transmitted, all antenna groups
  • All measurement reference symbols and data symbols are time division multiplexed.
  • the time domain relationship pattern of P measurement reference symbols and data symbols in a measurement period has an L pattern set, and there is no data symbol between P measurement reference symbols in the same pattern; P measurement reference symbol duration or P measurement reference symbol duration And a short data symbol duration equal to one long data symbol duration.
  • D-OFDM long data symbol
  • S-OFDM special OFDM
  • FIG. 5 is a schematic diagram of a third embodiment of measuring a time domain relationship pattern of reference signals and data symbols according to the present invention, wherein the region S is the 10th D-OFDM symbol;
  • FIG. 6 is a schematic diagram of a fourth embodiment of measuring a time domain relationship pattern of reference signals and data symbols according to the present invention, wherein the region S is composed of the ninth to tenth D-OFDM symbols .
  • the area S is divided into a measurement reference area (S-CSI) and a data area (S-Data), wherein the measurement reference area includes P time-division measurement reference symbols; when the measurement reference area and the data area are included
  • the gap (GP) domain or there is a GP domain between the P measurement reference symbols of the S-CSI, and there is a GP domain between the measurement reference area and the data area.
  • the GP domain is a guard interval, and it can be considered that the useful signal is not transmitted during the period, and the GP domain exists to fit a D-OFDM domain under the preferred feature design.
  • these GP domains also provide a change time for changes in the RF weight vector. among them,
  • the P value is obtained by one or more of the following: obtained by higher layer signaling; and/or by dynamic signaling; and/or by other information.
  • the other information obtained includes: Among them, Btotal and Q are positive integers, Btotal indicates the total number of beams that need to be scanned for the current beam scanning measurement, and Q indicates the number of beams transmitted on one measurement symbol.
  • S-CSI-OFDM P measurement reference symbols of region S
  • S-Data-OFDM The data OFDM symbol (which may be simply referred to as S-Data-OFDM) duration, and the sum of the durations of the GP lengths are equal to the duration of one D-OFDM symbol, and the duration of the OFDM includes the CP length.
  • S-OFDM is a term used herein to distinguish a symbol from a special OFDM symbol, that is, a plurality of measurement reference symbols, or a D-OFDM that is different from a plurality of measurement reference symbols and data symbols.
  • T CP MT 1
  • Data in the first instance
  • the measurement reference OFDM of the measurement reference area ensures that the subcarrier spacing is
  • L is a positive integer and satisfies 0 ⁇ L ⁇ N
  • ⁇ f is a subcarrier spacing of the D-OFDM symbol.
  • X is the number of frequency domain data subcarriers corresponding to the minimum CSI feedback unit
  • the CSI feedback is obtained based on the measurement reference signal, preferably Is a positive integer.
  • K is a positive integer satisfying 0 ⁇ K ⁇ N, preferably, Is a positive integer.
  • the CP length of the OFDM symbol based on 1) the S-CSI domain, and the CP length of the S-Data-OFDM domain symbol are equal to the CP length of the D-OFDM domain; 2) Is a positive integer; 3) It is a positive integer; 4)
  • Each of the S-CSI domains measures the same four characteristics of the OFDM duration, and the parameters of the S-OFDM as shown in Table 1 are obtained:
  • the transmitting end and the receiving end can establish the measurement pilot configuration as shown in Table 2, and the blank item in Table 2 indicates that there is no such configuration.
  • the S-OFDM domain can be designed based on the parameters as shown in Table 3.
  • the transmitting end and the receiving end can establish a measurement pilot configuration as shown in Table 4.
  • a GP is inserted between each OFDM symbol in the S-OFDM domain.
  • FIGS. 7 to 11 are respectively changed to FIGS. 12 to 16.
  • one of the GPs in FIG. 7 to FIG. 11 is equally divided into corresponding (p+1) GPs inserted between different OFDM symbols of the S-OFDM region, and these OFDMs include OFDM and S of the S-CSI region.
  • OFDM of the -Data-OFDM region In this case, Table 2 is changed to Table 5, and Table 4 is changed to Table 6.
  • the third, ninth, and tenth OFDMs of the D-OFDM are respectively used as the area S, which is an example of the existing LTE, and other
  • the OFDM which can be used as the D-OFDM domain of the region S can be transmitted without any special signal on the current transmission period.
  • the special signal includes at least one or more of the following signals: a broadcast signal, and/or a demodulation pilot signal, and/or a synchronization signal, and/or other measurement reference signals such as CRS.
  • ⁇ f 15 kHz is assumed, but the subcarrier spacing of the D-OFDM domain is not excluded.
  • one measurement reference symbol is an OFDM symbol
  • the measurement reference symbol and the data symbol are multiplexed in such a manner that all measurement reference symbols and data symbols of all antenna groups are in all transmission units having measurement beams to be transmitted.
  • the region S contains only P measurement reference OFDM symbols and one S-Data-OFDM symbol of the S-CSI region, and no GP domain.
  • the CP length of the OFDM symbol based on 1) the S-CSI domain, and the CP length of the S-Data-OFDM domain symbol are both greater than or equal to the CP length of the D-OFDM domain; 2) Is a positive integer; 3) It is a positive integer; 4)
  • Each of the S-CSI domains measures the same four characteristics of the same OFDM duration, and the parameters of the S-OFDM as shown in Table 7 are established:
  • the CP time length of the first 7 measurement reference symbols S-CSI-OFDM is 146 Ts1
  • the 8th measurement reference symbol S-CSI-OFDM The CP time length is 145Ts1.
  • the transmitting and receiving ends can establish the measurement pilot configuration as shown in Table 8, and the blank entries in Table 8 indicate that there is no such configuration.
  • the transmitting and receiving ends can establish the measurement pilot configuration as shown in Table 10.
  • there is only one pilot pattern that is, P S-CSI-OFDM symbols and one S-Data-OFDM symbol of the region S are inserted between 13 D-OFDM symbols.
  • the sum of the durations of the P S-CSI-OFDM symbols and one S-Data-OFDM symbol is still the duration of one D-OFDM symbol, and at this time, the durations of the various OFDM symbols include their CP lengths.
  • the transmitting and receiving ends can establish measurement pilot configurations as shown in Table 11, and the blank entries in Table 11 indicate that there is no such configuration.
  • the positions at which P S-CSI-OFDM symbols and one S-Data-OFDM symbol are inserted are only an example, and are not used to define the method of insertion.
  • this embodiment does not exclude the division of one region S into P 1 S-CSI-OFDM-Pre symbols, where P 1 is a region S according to the four preferred features 1) to 4) in this embodiment.
  • the first P S-CSI-OFDM-Pres are selected as the S-CSI-OFDM symbols according to the difference of the P values, and the remaining P 1 -P OFDM symbols can be used for data transmission, or the transmission power is assumed. Is 0. In this way, the CSI regions of the respective cells are aligned, and mutual interference between the inter-cell CSI measurement signals and the Data data is controlled.
  • the measurement reference signal is transmitted periodically and/or aperiodically.
  • the first or first to second sub-frames of each period satisfy one of the sub-frame structures shown in FIGS. 3 to 6 in the first embodiment and the second embodiment. There is no measurement of the transmission of the reference signal in other subframes.
  • the subframe structure of the current subframe has the subframe structure of the first embodiment and the second embodiment, and there is no measurement reference in other subframes. Signal transmission.
  • the subframe structure of the first subframe that is, the subframe 0 satisfies any one of the first embodiment or the second embodiment, and there is no measurement signal in other subframe structures. Transmit, the subframe structure is different from subframe 0.
  • the P value remains unchanged and the subframe structure remains unchanged in different measurement periods unless there is a new P value and pattern indication notification.
  • the P measurement reference signals of the S-CSI domain and the time domain pattern relationship with S-Data-OFDM, D-OFDM, and the week of the measurement reference signal are given. Period and acyclic transmission methods. In this embodiment, a specific transmission method of a measurement reference signal will be described.
  • one measurement reference signal is an OFDM symbol, and the total bandwidth of the current system bandwidth is common.
  • a measurement reference signal region that is, a time-frequency resource (RE) (which may be simply referred to as S-CSI-OFDM-RE) on an S-CSI-OFDM symbol, and only one port signal can be transmitted on the same time-frequency resource.
  • a port may correspond to one beam of one radio frequency link, or may correspond to a result of N-baseband beamforming and radio frequency beamforming hybrid beamforming.
  • the generation function of the m sequence is initialized once at the beginning of each OFDM, where It is the virtual cell number of the measurement reference signal, p is an index of P measurement reference signals in an S domain, N CP is a CP length index, and N CP belongs to ⁇ 0, 1 ⁇ .
  • the measured baseband precoding is as shown in the formula (2):
  • the baseband frequency domain signal sequence on the i-th radio link is as shown in equation (3):
  • the equivalent baseband signal obtained by the formula (6) is subjected to radio frequency processing, for example, processing such as load frequency, and then transmitted.
  • the ports of the corresponding measurement reference signals are the same, but the corresponding hybrid beams are different.
  • Different hybrid beams on different S-CSI-OFDM-RE resources corresponding to different components in the same RF link beam combination adjusted by baseband beam weighting, that is, a mixture corresponding to port j on one S-CSI-OFDM-RE resource The beam pattern is shown in equation (7):
  • the frequency domain width occupied by the multiplexed M measurement reference signals should be less than or equal to the frequency domain width of the Precoding Resource Block Group (PRG).
  • PRG Precoding Resource Block Group
  • each S-CSI-OFDM-RE resource is precoded by W j, m, BB baseband.
  • the adjustment of the vector constitutes a hybrid beam, assuming W j, m, BB is a column vector in which only one of the elements is non-zero and the other elements are 0.
  • each S-CSI-OFDM-RE corresponds to one of the four beams in FIG.
  • the 0th to the 3rd S-CSI-OFDM-REs sequentially correspond to the beam [4, 2, 3, 1] in FIG.
  • the channel quality of one of the N radio frequency links to the receiving end can be obtained.
  • the receiving end is based on the received signal on the 0th S-CSI-OFDM-RE and the measurement reference signal on the port j, and the fourth RF link can be obtained when the beam direction indicated by the beam 4 is emitted. Channel quality at the receiving end.
  • each S-CSI-OFDM-RE can correspond to a different narrow beam within the radio wide beam.
  • one measurement reference symbol is transmitted based on a single carrier.
  • the subframe pattern and the structure of each region S are the same as those of the first embodiment and the second embodiment, but only one of the S-CSI-
  • the OFDM is changed to a single carrier signal, called an S-CSI-TimeSequence, and the time domain length of the S-CSI-OFDM is changed to the duration of the S-CSI-TimeSequence in this embodiment.
  • the receiving end obtains a time domain tap by correlating the single carrier reference symbols, and then performs fast Fourier transform (FFT) transform on the time domain tap to obtain a frequency domain channel corresponding.
  • FFT fast Fourier transform
  • the length of an S-CSI-TimeSequence needs to consider the following preferred features:
  • One S-CSI-TimeSequence is divided into two domains, the first domain transmits a time domain measurement reference signal sequence T S-CSI-TimeSequence, and the second domain is a protection domain T S-CSI-TimeSequence, 2 , a protection domain
  • T Delay that is, T S-CSI-TimeSequence, 2 ⁇ T Delay
  • T Delay represents the maximum multipath delay and the signal power in the protection domain is 0.
  • the GP domain in FIG. 12 to FIG. 17 is a T S-CSI-Time Sequence, 2 domain
  • the S-CSI-OFDM domain in this embodiment is T S-CSI-TimeSequence, 1 .
  • N is an integer multiple of the number of subcarriers included in the data transmission minimum resource allocation unit, and 0 ⁇ L ⁇ N.
  • T 1 D-Data is a time domain length of a D-OFDM after removing the CP length;
  • An S-CSI-TimeSequence symbol can simultaneously transmit measurement reference signals corresponding to multiple ports, and different measurement reference signals are different hybrid beams after different baseband beam weight adjustments of beam combinations of the same radio frequency link group, the same The port has the same hybrid beam corresponding to the full system bandwidth occupied by the current S-CSI-TimeSequence symbol.
  • the signal transmission process of an S-CSI-TimeSequence is as follows:
  • the equivalent baseband on the ijth antenna element connected to the i-th radio frequency link is as follows
  • the signal is processed by radio frequency processing, such as load frequency processing.
  • the above preferred feature 2 is protected in this embodiment.
  • the length of the domain is 0, that is, only the first domain, the beam reference signal sequence domain.
  • the multiplexing mode of the reference symbol and the data symbol is a sixth type of multiplexing mode, that is, in all the transmission units that need to transmit the measurement beam, part of the measurement reference symbols and the data symbols are time-division, part of The measurement reference symbols and data symbols are in a frequency division manner. Further, in different transmission units having measurement reference symbols, the multiplex subframe pattern may be varied.
  • FIG. 30 to FIG. 32 there are three types of sub-frame patterns, as shown in FIG. 30 to FIG. 32, in which OFDM in the OFDM indicates that the measurement reference signal and the data signal are transmitted in a time division manner, and the horizontally shaded OFDM is used.
  • the medium measurement reference signal and the data signal are transmitted by frequency division.
  • C0 represents a subcarrier position occupied by a measurement reference symbol
  • its subcarrier position in OFDM is only an example, and is not used to define its position, that is, other subcarrier positions are not excluded.
  • the oblique hatching in FIGS. 30 to 32 indicates that the measurement reference signal and the data signal are transmitted by time division, and the pattern may be one of FIG. 7 to FIG. 10 or one of FIG. 12 to FIG. 15; or FIG. 17 to FIG. One.
  • the sum of the durations of the reference signals is measured, or the sum of the durations of the measured reference signals and the short data is equal to the length of the long data.
  • the receiving end may determine, by one or more of the following methods, a specific subframe pattern in the beam measurement transmission unit:
  • Method 1 Obtained by high-level signaling
  • Manner 3 comparing the beam ID of the reference signal of the PDCCH that has been successfully demodulated and the measurement beam ID to be transmitted in the transmission unit. If the two beam IDs belong to the same beam direction set of one antenna group, the beam direction and the data beam direction are measured.
  • the measurement reference symbols and data symbols of the antenna group with the same beam direction adopt frequency division multiplexing.
  • the measurement reference symbols and data symbols of the antenna group with the same beam direction adopt time division multiplexing, and the measurement reference signals of each antenna group are used.
  • the order of transmission is pre-agreed by both sending and receiving.
  • the receiving end can know the beam ID, and the beam direction set of each antenna group corresponding to each beam ID can be obtained, because the beam is a hybrid beam, and multiple hybrid beams correspond to one beam in one antenna group. direction.
  • the criteria are fixed or notified through high-level signaling.
  • Manner 4 Comparing the beam ID of the reference signal of the demodulated PDSCH of the antenna group and the measurement beam ID of the antenna group.
  • the measurement beam direction and the data beam direction are the same.
  • the receiving end can know the beam ID, and can obtain the beam ID of each antenna group corresponding to the beam ID, or the transmitting end and the receiving end agree on the beam ID set corresponding to different directions of each antenna group, because The beam is a hybrid beam, and multiple hybrid beams correspond to one beam direction in one antenna group.
  • the criteria for determining the subframe pattern according to whether the beam direction is the same or not may include:
  • the measurement reference symbol and the data symbol are transmitted in a frequency division manner, and among the S OFDM symbols having the measurement reference signal, at least one of the OFDM symbols has at least one antenna group, and the measurement beam and the data beam direction are different.
  • the measurement reference symbols and data symbols of all antenna groups in the transmission unit are sent in a time division manner;
  • the measurement reference signal and the data beam direction are different in the S OFDM symbols in which the measurement beam and the data beam direction are different.
  • the beam measurement symbols and data symbols of all antenna groups on the OFDM are transmitted in a time division manner; on the OFDM symbols in which the measurement beam and the data beam are in the same direction, the measurement reference symbols and the data symbols are transmitted by time division or frequency division;
  • the measurement reference signal and the data beam direction are different in the S OFDM symbols in which the measurement beam and the data beam direction are different.
  • the measurement reference symbols and data symbols of the antenna group having different beam and data beam directions on the OFDM symbol are transmitted in a time division manner,
  • the measurement reference symbols and data symbols of the antenna group with the same direction of the measurement beam and the data beam on the OFDM symbol are transmitted in a time division or frequency division manner; on the OFDM symbol with the same direction of the measurement beam and the data beam, all measurement reference symbols and data symbols on the OFDM symbol Send by time division or frequency division.
  • Manner 5 Comparing the beam ID of the common reference symbol of the antenna group and the measurement beam ID of the antenna group. When the two beam IDs belong to the same beam direction set of the antenna group, the measurement beam direction and the data beam direction are the same. It should be noted that, here, it is assumed that the receiving end can know the beam ID, and can obtain the beam ID of each antenna group corresponding to the beam ID, or the transmitting end and the receiving end agree on the beam ID set corresponding to different directions of each antenna group. Since the beam is a hybrid beam, multiple hybrid beams correspond to one beam direction in one antenna group. By comparing whether the beam directions are the same, and determining the multiplexing manner of the measurement reference symbols and the data symbols in the current measurement reference signal transmission subframe according to certain criteria. Wherein, the criterion may be fixed in advance or notified by high layer signaling;
  • the mode three to five is better than the mode one, that is, if one of the transmission modes is available, two of the modes are available, and the mode is three to five.
  • the method shall prevail.
  • the measurement reference symbols and the data symbol multiplexing classes are different, and different multiplexing classes are obtained by signaling or time domain parameters in which the transmission unit is located.
  • the subframe positions occupied by the measurement reference symbols are fixed in different measurement periods, but the multiplexing categories of the measurement reference symbols and the data symbols may be different, and different multiplexing classes need to be notified by signaling.
  • the signaling may be one of the following:
  • the change period of the reuse category can be longer, and it is not notified every measurement period; or,
  • the change of the multiplexing class can be passed through every subframe in which the reference symbol is measured. Know that, in turn, each sub-frame can be different; or,
  • High-level signaling + dynamic signaling the high layer signaling class subset, wherein the category subset belongs to the set of the six categories to dynamically signal the specific category.
  • the multiplexing category is notified according to the time domain parameter of the transmission unit, as shown in FIG. 34. At this time, the multiplexing category is calculated according to the system frame number of the transmission unit and the subframe number where the transmission unit is located, and one implementation manner is that all multiplexing is performed. A subset of the categories or multiplexing classes are used alternately in different measurement periods. Another implementation is that all multiplexing classes or a subset of the multiplexing classes are used in turn within different transmission units with measured reference symbols.
  • the multiplexing manner of the data symbols and the measurement reference symbols in the transmission unit is the third type multiplexing mode, that is, all measurement reference symbols and data symbols are frequency division multiplexed; and all demodulation reference signals
  • the port occupies the RE on the OFDM with the measurement reference, and the measurement reference symbol occupies between different OFDM or between the OFDM with the measurement reference symbol and the OFDM without the measurement reference symbol, and the different demodulation reference signal ports can only be code division multiplexed. Code division multiplexing in the frequency domain.
  • each demodulation reference signal port occupies an RE on all OFDMs with measurement reference symbols and occupies an RE on at least one data OFDM symbol without measurement reference symbols.
  • the subframe structure of the existing LTE is a physical resource block including 14 OFDM symbols, 12 subcarriers, and the first 7 OFDM symbols are called even numbers.
  • the slot, the last 7 OFDM symbols are called odd slots.
  • different beam measurement ports do not perform time division code division multiplexing on CSI1 and CSI2 ports, that is, CSI1 only occupies one RE on the fifth OFDM of even time slots, and CSI2 only occupies even time slots.
  • a demodulation reference signal port occupies an RE on all OFDMs with CSI-RS occupancy, and does not perform time domain spreading between different OFDM symbols RE with CSI-RS.
  • DMRS1 and DMRS2 occupy REs on OFDM occupied by CSI1 to CSI4, and occupy at least one RE on OFDM symbols without measurement reference symbols, such as REs on the 4th OFDM symbols of even and odd slots.
  • the channel estimation result obtained by the DMRS on the same demodulation reference signal port such as DMRS1 or DMRS2 on the 5th and 6th OFDM symbols of the even slot and the odd slot (ie, the OFDM with CSI-RS) can only be obtained.
  • time domain interpolation cannot be used for demodulation of other OFDM
  • channel estimation results obtained by DMRS on the 4th OFDM symbol of the even time slot and the odd time slot can be used for other OFDM symbols, for example
  • FIGS. 35(a) to 35(f) are patterns of different demodulation reference signals satisfying the above constraints.
  • different demodulation reference signal ports adopt frequency division multiplexing.
  • different demodulation reference signal ports are frequency division multiplexed on OFDM symbols with CSI-RS, and time domain code division is performed on different demodulation reference signal ports on OFDM symbols without CSI-RS. use.
  • different demodulation reference signal ports adopt frequency domain code division multiplexing.
  • Fig. 35(d) different demodulation reference signal ports are also frequency-domain code division multiplexed, except that the density of the demodulation reference signal port in the frequency domain is reduced.
  • FIG. 35(a) different demodulation reference signal ports adopt frequency division multiplexing.
  • different demodulation reference signal ports are frequency division multiplexed on OFDM symbols with CSI-RS, and time domain code division is performed on different demodulation reference signal ports on OFDM symbols without CSI-RS. use.
  • Fig. 35(c) different demodulation reference signal ports adopt frequency domain
  • different demodulation reference signal ports adopt frequency division and/or frequency domain code division multiplexing. Only the demodulated signal port occupies adjacent subcarriers in the frequency domain.
  • different demodulation reference signal ports adopt frequency division and/or frequency domain code division multiplexing, except that the density of the demodulation reference signal is increased relative to 35(e).
  • the same demodulation reference signal port such as demodulation reference signal port 1 or demodulation reference signal port 2, in even and odd slots 5th to 6th
  • the time domain interpolation cannot be performed between the channel estimation values obtained by totaling 4 OFDM on OFDM, and the channel estimation value obtained by the 4th OFDM in the even time slot or the odd time slot cannot be the 5th to the even time slot and the odd time slot.
  • the channel estimation values obtained by the sixth total of 4 OFDMs are time-domain interpolated; the channel values on the OFDM without the reference symbols and the demodulation reference signals are not measured, and the estimation values obtained only from the demodulation reference signals without the reference symbols are measured. Time domain interpolation is obtained.
  • one demodulation reference port occupies an RE on an OFDM having a measurement reference symbol, and even if there is no measurement reference symbol on the OFDM on the PRB where the demodulation reference port is located, at least OFDM in the same subframe has There is a measurement reference symbol on one RE. At this time, it is also considered that there is a measurement reference symbol on the OFDM, and the demodulation reference port needs to occupy the RE on the OFDM.
  • the radio frequency beam combining direction on the data symbol is allowed to be different from the radio frequency beam on the OFDM where the measurement reference symbol is located to solve the conflict problem.
  • Different radio frequency beams between different OFDMs in which different measurement reference symbols are allowed can be realized by performing scanning of multiple radio frequency beams in one transmission unit.
  • one measurement reference symbol port is transmitted only on one measurement reference symbol, and different beam measurement ports may be code division multiplexed in the frequency domain on the same measurement reference symbol, or frequency division multiplexed in the frequency domain. Instead of time-domain code division multiplexing.
  • the reference symbols and the data symbols are time-division multiplexed, there are four measurement reference symbols C0 to C3, and one beam measurement reference port such as CSI0 is only transmitted on C0, and does not occupy resources in other measurement reference symbols.
  • different beam measurement reference ports may be frequency-multiplexed on the same measurement reference symbol as C0, or code division multiplexed on C0.
  • different measurement reference ports cannot be multiplexed in the time domain code in different measurement reference symbols, that is, different measurement reference ports cannot be spread in the time domain of different measurement reference symbols, for example, CSI3 and CSI4 cannot be in C0 to C3.
  • Spreading is performed on any two, or any three, or four, and code division multiplexing in the time domain cannot be achieved. In this way, the beam combinations of the RF antenna groups on different measurement reference symbols are allowed to be different.
  • the measurement reference symbol is at the last bit of a transmission unit, and there is no data symbol after the reference symbol is measured in the transmission unit.
  • the time division multiplexed measurement reference symbols C0 to C4 are at the last bit of a transmission unit, and the number of measurement reference symbols included in one subframe (ie, one transmission unit) in the figure is only an example, and in the figure, There is a short data symbol which is only an example and is not intended to limit the protection of the present invention. The range of protection does not include short data symbols in other embodiments of the embodiment, as shown in FIG.
  • all the symbols including the measurement reference symbols are at the last bit of a transmission unit, including time division multiplexing measurement reference symbols and frequency division multiplexed OFDM symbols, as shown in FIG.
  • the number of frequency division multiplexed OFDM symbols and the number of time division multiplexed beam measurement reference symbols in FIG. 41 are also only examples, and are not intended to limit the protection scope of the present invention, and may be frequency division multiplexed OFDM symbols, and may also be There are no short data symbols.
  • the processing is such that the radio frequency beam does not change during the data transmission phase, and the radio frequency beam is changed at the last bit of the subframe.
  • the device is disposed in a transmitting end, and includes at least a first determining unit, a first processing unit, where
  • a first determining unit configured to determine, in a transmission unit that has a measurement reference symbol to be transmitted, a multiplexing pattern category of the measurement reference symbol and the data symbol;
  • the first processing unit is configured to transmit the measurement reference symbols and the data symbols according to the determined multiplexing pattern category.
  • the first determining unit is specifically configured to: pre-agreed a multiplexing pattern category; or a set of multiplexing pattern categories that are invisibly notified according to relevant time domain parameters of the transmission unit; or, according to current data beams and measurements that need to be sent A kind of multiplexing pattern determined by the result of whether the beam direction of the beam corresponds to the collision, and is notified to the receiving end by signaling.
  • the first processing module is specifically configured to: the measurement reference symbol and the data symbol do not overlap in the time domain, and the frequency domain completely overlaps; the duration of one measurement reference symbol is less than or equal to the duration of one data symbol, and the subcarrier spacing of the measurement reference symbol is greater than or equal to the data. The subcarrier spacing of the symbol.
  • the multiplexing pattern categories of the reference symbols and the data symbols may include:
  • the first type of multiplexing mode all measurement reference symbols and data symbols are time division multiplexed; and/or, the second type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed;
  • a third type of multiplexing all measurement reference symbols and data symbols are frequency division multiplexed; All demodulation reference signal ports occupy a resource element (RE, Resource element) on all OFDMs with measurement reference symbols, and between different OFDMs with measurement reference symbols, or in OFDM with measurement reference symbols and no measurement reference symbols Between OFDM, different demodulation reference signal ports can only be multiplexed in the time domain if the code division multiplexing can only be in the frequency domain;
  • RE Resource element
  • the fourth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbols use the first signaling to indicate the measurement reference symbol port whose transmission power is 0 or the transmission power corresponding to the measurement reference symbol port.
  • the fifth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; and the second signaling indicates that the data symbol transmission power is 0 OFDM symbol index;
  • a sixth type of multiplexing mode partial measurement reference symbols and data symbols time division multiplexing, partial measurement reference symbols and data symbols frequency division multiplexing; and demodulation reference signals only on frequency division multiplexed OFDM or not Measure the OFDM on the reference signal.
  • the measurement reference signal corresponding to one measurement reference port is sent only on one frequency division multiplexed OFDM symbol, or only Transmitted on a time-division multiplexed measurement reference symbol.
  • FIG. 38 is a schematic structural diagram of a device for implementing measurement of reference symbol transmission according to an embodiment of the present invention. As shown in FIG. 38, the device is disposed in a receiving end, and includes at least a second determining unit and a second processing unit.
  • a second determining unit configured to determine, in a transmission unit that has a measurement reference symbol to be transmitted, a multiplexing pattern category of the measurement reference symbol and the data symbol;
  • the second processing unit is configured to receive the measurement reference symbols and the data symbols in accordance with the determined multiplexing pattern category.
  • the second determining unit is specifically configured to: pre-agreed a multiplexing pattern category; or a set of multiplexing pattern categories that are invisibly notified according to relevant time domain parameters of the transmission unit; or receive signaling from the transmitting end to learn the learned multiplexing Pattern category.
  • the second processing module is specifically configured to: the measurement reference symbol and the data symbol do not overlap in the time domain, and the frequency domain completely overlaps; the duration of one measurement reference symbol is less than or equal to the duration of one data symbol, and the subcarrier spacing of the measurement reference symbol is greater than or equal to the data. The subcarrier spacing of the symbol.
  • the multiplexed pattern category of the reference symbol and the data symbol can be:
  • the first type of multiplexing mode all measurement reference symbols and data symbols are time division multiplexed; channel estimation values obtained on different OFDM symbols by the same demodulation reference signal port can be time-domain interpolated;
  • all measurement reference symbols and data symbols are frequency division multiplexed; the receiving end time-domain interpolates channel estimation values obtained by different demodulation reference signal ports on different OFDM symbols;
  • the third type of administration all measurement reference symbols and data symbols are frequency division multiplexed; and all demodulation reference signal ports occupy REs on OFDM with measurement reference symbols, and measurement reference symbols occupy different OFDM between Or, between OFDM with measurement reference symbols and OFDM without measurement reference symbols, different demodulation reference signal ports can only be multiplexed in the time domain if the code division multiplexing can only be in the frequency domain.
  • the same demodulation reference signal port on the receiving end may not interpolate the channel estimation value between different OFDMs with measurement reference symbols, and the same demodulation reference signal port is between the OFDM with the measurement reference symbol and the OFDM without the measurement reference symbol.
  • the channel estimation value may not be time domain interpolated, and the same demodulation reference signal port may perform time domain interpolation on the channel estimation value between OFDM without measurement reference symbols;
  • the fourth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbols use the first signaling to indicate that the measurement reference symbol port with the transmission power is 0 or the measurement reference symbol port transmission power is 0. OFDM symbol index.
  • the channel estimation values of the same demodulation reference signal port on the different OFDM symbols at the receiving end may be time-domain interpolated;
  • the fifth type of multiplexing mode all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbols use the second signaling to indicate an OFDM symbol index with a data symbol transmission power of zero.
  • the channel estimation values of the same demodulation reference signal port on the different OFDM symbols at the receiving end may be time-domain interpolated;
  • the sixth type of multiplexing part of the measurement reference symbols and data symbols time division multiplexing, the Ministry Sub-measurement reference symbols and data symbols are frequency division multiplexed; and the demodulation reference signal is only on frequency division multiplexed OFDM or OFDM without measurement reference signals; measurement reference symbol measurement reference symbol reception end pairs are by the same demodulation reference signal
  • the channel estimates obtained by the ports on different OFDM symbols can be time domain interpolated.
  • the measurement reference signal corresponding to one measurement reference port is sent only on one frequency division multiplexed OFDM symbol, or only Transmitted on a time-division multiplexed measurement reference symbol.
  • the transmission unit is a transmission unit in which the periodic measurement beam reference symbol is located at a high layer, and the measurement beam is a periodic measurement beam;
  • the transmission unit is a transmission unit in which the aperiodic measurement beam reference symbol of the dynamic signaling is located, and the measurement beam is a non-periodic measurement beam.
  • the transmission unit pattern satisfies the following characteristics:
  • the sum of the durations of one or more time division multiplexed measurement reference symbols is equal to the duration of one data symbol; or the sum of the duration of one or more time division multiplexed measurement reference symbols and the duration of one short data symbol is equal to one long data symbol Length of time;
  • the multiplexed pattern class is the sixth class
  • the number of time division multiplexed OFDM and/or frequency division multiplexed OFDM is fixed or different in different transmission units having all beam reference symbols, and measurement in one time division multiplexed OFDM
  • the number of reference symbols and the duration of the short data symbols are fixed or different;
  • the time division multiplexed OFDM includes one or more measurement reference symbols in a data OFDM duration, or one or more measurement reference symbols and one short data symbol in one data OFDM duration; or all beams Reference symbol
  • the number of time division multiplexed measurement reference symbols and/or the number of frequency division multiplexed OFDM symbols are fixed or different. When not, the notification can be made by signaling.
  • the transmission unit pattern further satisfies: carrying the beam measurement reference symbols in a frequency division multiplexing manner on the short data symbols in the transmission unit.
  • the time domain is equal to the time domain length corresponding to the minimum unit of the resource scheduling, and the frequency domain corresponds to all system bandwidths.
  • the data symbols refer to all symbols except the measurement reference symbols, including demodulation reference signals.
  • the one symbol is a sequence of one or more signal elements.
  • the measurement reference signal may be a channel measurement reference signal CSI-RS, and/or a beam measurement reference symbol, and/or a beam tracking measurement reference signal, and/or a beam detection measurement reference symbol.
  • the measurement reference symbol may also be an uplink SRS (Sounding Reference Signal).
  • a write end including: a first processor; a first memory configured to store the first processor executable instruction; and configured to perform information transmission and reception according to the control of the first processor a first transmission device of communication; wherein the first processor is configured to perform an operation in a method of implementing measurement of reference symbol transmission at the transmitting end.
  • the embodiment further provides a receiving end, comprising: a second processor; a second memory configured to store the second processor executable instructions; and configured to perform information transceiving communication according to the control of the second processor a second transmission device; wherein the second processor is configured to perform the operations in the method of receiving the measured reference symbol transmission described above.
  • the present embodiment also provides a computer storage medium arranged to store a computer program arranged to perform the method of measuring reference symbol transmission as described above.
  • the method and apparatus for implementing measurement reference symbol transmission provided by the embodiments of the present invention have the following beneficial effects: solving the problem of conflict between the measurement beam and the data beam for the limited RF link direction of the radio frequency link.
  • the determined multiplexing reference symbols of the measurement reference symbols and the data symbols are displayed as time division multiplexing, the collision problem between the measurement beam and the data beam for the radio beam direction requirements of the limited radio frequency link is effectively avoided.

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

Abstract

La présente invention concerne, dans certains modes de réalisation, un procédé et un dispositif destinés à réaliser une émission d'un symbole de référence de mesure. Le procédé comporte les étapes consistant: dans une unité d'émission ayant un symbole de référence de mesure à émettre, à déterminer le type d'un schéma de multiplexage du symbole de référence de mesure et d'un symbole de données; et à recevoir et émettre le symbole de référence de mesure et le symbole de données d'après le type déterminé du schéma de multiplexage. Dans la solution technique décrite dans le mode de réalisation de la présente invention, un symbole de référence de mesure et un symbole de données sont reçus et émis d'après un type déterminé de schéma de multiplexage du symbole de référence de mesure et du symbole de données, résolvant ainsi un conflit entre un faisceau de mesure et un faisceau de données sur leurs besoins relatifs à une direction limitée de faisceau à radiofréquences d'une liaison à radiofréquences. En particulier, lorsqu'un type déterminé d'un schéma de multiplexage d'un symbole de référence de mesure et d'un symbole de données est un multiplexage par répartition en temps, un conflit entre un faisceau de mesure et un faisceau de données sur leurs besoins relatifs à une direction limitée de faisceau à radiofréquences d'une liaison à radiofréquences est efficacement évité.
PCT/CN2016/092420 2016-01-15 2016-07-29 Procédé et dispositif pour réaliser une émission d'un symbole de référence de mesure WO2017121095A1 (fr)

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