CN106982184B - Method and device for realizing transmission of measurement reference symbols - Google Patents

Method and device for realizing transmission of measurement reference symbols Download PDF

Info

Publication number
CN106982184B
CN106982184B CN201610027927.3A CN201610027927A CN106982184B CN 106982184 B CN106982184 B CN 106982184B CN 201610027927 A CN201610027927 A CN 201610027927A CN 106982184 B CN106982184 B CN 106982184B
Authority
CN
China
Prior art keywords
measurement reference
reference signal
data
signals
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610027927.3A
Other languages
Chinese (zh)
Other versions
CN106982184A (en
Inventor
张淑娟
毕峰
刘文豪
苗婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN201610027927.3A priority Critical patent/CN106982184B/en
Priority to CN202011554105.3A priority patent/CN112615706B/en
Priority to PCT/CN2016/092420 priority patent/WO2017121095A1/en
Publication of CN106982184A publication Critical patent/CN106982184A/en
Application granted granted Critical
Publication of CN106982184B publication Critical patent/CN106982184B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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

Landscapes

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

Abstract

The invention discloses a method and a device for realizing the transmission of a measurement reference symbol, which comprises the steps of determining the multiplexing pattern type of the measurement reference symbol and a data symbol in a transmission unit which needs to send the measurement reference symbol; and transmitting and receiving the measurement reference symbols and the data symbols according to the determined multiplexing pattern type. According to the technical scheme provided by the invention, the measurement reference symbols and the data symbols are received and transmitted according to the determined multiplexing pattern types of the measurement reference symbols and the data symbols, so that the problem of conflict between the measurement wave beams and the data wave beams on the requirements of limited radio frequency link radio frequency wave beam directions is solved. Particularly, when the determined multiplexing pattern types of the measurement reference symbols and the data symbols are displayed as time division multiplexing, the problem of conflict between the measurement beams and the data beams to the requirement of the limited radio frequency link radio frequency beam direction is effectively avoided.

Description

Method and device for realizing transmission of measurement reference symbols
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a method and an apparatus for implementing transmission of measurement reference symbols based on a high-frequency hybrid beam communication scheme.
Background
With the development of communication technology, the demand of data services is increasing, and available low-frequency carriers are also very scarce, so that communication based on high-frequency (30-300 GHz) carriers which are not fully utilized becomes one of important communication means for solving future high-speed data communication. The available bandwidth for high frequency carrier communication is large, providing efficient high speed data communication. However, one of the great technical challenges facing high frequency carrier communication is: compared with low-frequency signals, high-frequency signals have very large fading in space, and although the problem of spatial fading loss occurs in outdoor communication of the high-frequency signals, more antennas can be generally used due to the reduction of the wavelength of the high-frequency signals, so that the communication can be performed based on beams to compensate the fading loss in space.
However, when the number of antennas increases, the problem of increased cost and power consumption is also caused by the digital beam forming because each antenna needs to have one radio frequency link. Therefore, the current research tends to mix beam forming, i.e. the rf beam and the digital beam together form the final beam.
Disclosure of Invention
The invention provides a method and a device for realizing measurement reference symbol transmission, which can reduce the conflict problem of receiving and transmitting measurement beams and data beams.
In order to achieve the object of the present invention, the present invention provides a method for implementing measurement reference symbol transmission, including:
the method comprises the steps that a sending end determines the multiplexing pattern types of a measurement reference symbol and a data symbol in a transmission unit needing to be sent by the measurement reference symbol;
and the sending end sends the measurement reference symbols and the data symbols according to the determined multiplexing pattern type.
Optionally, the transmission unit that has the measurement reference symbol to send is:
a transmission unit where a periodic beam measurement reference symbol notified by a higher layer is located; or,
and the aperiodic beam notified by the dynamic signaling measures the transmission unit where the reference symbol is located.
Optionally, the determining the multiplexing pattern type of the measurement reference symbol and the data symbol includes:
the transmitting end and the receiving end predetermine a multiplexing pattern type; or,
the sending end invisibly informs a group of multiplexing pattern categories according to the relevant time domain parameters of the transmission unit; or,
the sending end determines a multiplexing pattern type according to the result that whether the directions of the data wave beam required to be sent currently and the radio frequency wave beam corresponding to the measuring wave beam conflict or not, and informs the receiving end of the multiplexing pattern type through signaling.
Optionally, 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;
and/or, the second type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed;
and/or, the third type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; all demodulation reference signal ports occupy resource elements RE on all orthogonal frequency division multiplexing OFDM with measurement reference symbols, and among different OFDM with the measurement reference symbols, or among the OFDM with the measurement reference symbols and the OFDM without the measurement reference symbols, if code division multiplexing is carried out on the different demodulation reference signal ports, the different demodulation reference signal ports can only be in a frequency domain, and cannot be in time domain code division multiplexing;
and/or, a fourth type multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbol adopts a first signaling to indicate a measurement reference symbol port with the transmission power of 0 or an OFDM symbol index with the transmission power of 0 corresponding to the measurement reference symbol port;
and/or, a fifth multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; indicating the OFDM symbol index with the data symbol transmitting power of 0 by adopting a second signaling;
and/or, the sixth multiplexing mode: time division multiplexing of part of the measurement reference symbols and the data symbols, and frequency division multiplexing of part of the measurement reference symbols and the data symbols; and the demodulation reference signal is only on the OFDM of frequency division multiplexing or the OFDM without the measurement reference signal.
Optionally, when the multiplexing pattern type is any one of the first multiplexing manner to the sixth multiplexing manner, the srs corresponding to one srs port is only transmitted on one OFDM symbol of frequency division multiplexing, or only transmitted on one srs symbol of time division multiplexing.
Optionally, when the multiplexing mode is frequency division multiplexing, the frequency division multiplexing is: on OFDM with measurement reference symbols, the measurement reference symbols and the data symbols are subjected to frequency division multiplexing; there are OFDM symbols within the transmission unit that have no measurement reference symbols and only data symbols.
Optionally, the multiplexing pattern type of the measurement reference symbol and the data symbol is a first type multiplexing mode and/or a sixth type multiplexing mode;
the transmission unit pattern satisfies the following characteristics:
one or more time-division multiplexed measurement reference symbols within the time-division multiplexed OFDM have no data symbols therebetween; and the number of the first and second groups,
the sum of the time lengths of one or more time division multiplexed measurement reference symbols is equal to the time length of one data symbol, or the sum of the time lengths of one or more time division multiplexed measurement reference symbols and the time length of one short data symbol is equal to the time length of one long data symbol;
for one transmission unit, the time domain is equal to the time domain length corresponding to the minimum unit of resource scheduling, and the frequency domain corresponds to all system bandwidths.
Optionally, the transmission unit pattern further satisfies: and carrying a beam measurement reference symbol on the short data symbol in the transmission unit in a frequency division multiplexing mode.
Optionally, when the multiplexing pattern category of the measurement reference symbols and the data symbols is a sixth type of multiplexing mode,
in all different transmission units with beam reference symbols, the number of the time division multiplexing OFDM and the frequency division multiplexing OFDM is fixed or different; the number of measurement reference symbols and the duration of short data symbols within one time division multiplexing OFDM are fixed or different.
Optionally, when the numbers of the time division multiplexing OFDM and the frequency division multiplexing OFDM are different, or the number of the measurement reference symbols in one time division multiplexing OFDM and the duration of the short data symbol are different, the notification is performed through third indication information.
Optionally, the third indication information is notified by one or more of the following manners:
the number of the time division multiplexing OFDM and the frequency division multiplexing OFDM, the number of the measurement reference symbols in one time division multiplexing OFDM and the duration of the short data symbols are informed invisibly through downlink control information DCI command notification, and/or through higher layer signaling notification, and/or through informing the beam ID of the measurement reference symbols and the beam ID of the data symbols.
Optionally, when the third indication information is notified by notifying a beam ID of a measurement reference symbol and a beam ID of a data symbol, the method includes:
if at least one beam ID of a measurement reference symbol and at least one beam ID of a data symbol on the OFDM do not belong to any same beam ID set on the OFDM, the receiving end determines that all the measurement reference symbols and the data symbols on the OFDM adopt time division multiplexing, and the number of the measurement reference symbols in the OFDM of the time division multiplexing is the number of the corresponding measurement reference symbols on the OFDM, so as to obtain the duration of a short data symbol;
and 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 subjected to frequency division multiplexing.
Optionally, the beam ID set is notified through signaling, or is pre-agreed by the transmitting end and the receiving end; there is no intersection between different beam ID sets;
the beam ID of the sounding reference symbol includes the beam IDs of all beam sounding reference ports carried on the sounding reference symbol.
Optionally, the beam ID of the data symbol is notified by one or more of the following:
sending a beam ID of a demodulation reference signal port corresponding to a demodulation downlink control signaling, wherein the beam IDs of all the demodulation reference ports corresponding to the downlink control signaling are the beam IDs of data symbols;
and/or sending the beam ID of the demodulation reference signal port corresponding to the demodulation downlink data channel, wherein all the beam IDs of the demodulation reference ports corresponding to the downlink data channel are the beam IDs of the data symbols.
Optionally, when the determined multiplexing pattern class includes a measurement reference symbol and a data symbol, the sending the measurement reference symbol and the data symbol includes:
the measurement reference symbol and the data symbol are not overlapped 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 the subcarrier spacing of the data symbol.
Optionally, when the sounding reference symbol and the data transmission symbol are both OFDM symbols, the duration of one sounding reference symbol is less than or equal to the duration of one data symbol, and the subcarrier spacing of the sounding reference symbol is greater than or equal to the subcarrier spacing of the data symbol:
the subcarrier spacing of the measurement reference symbols is N/L times of the parameter of the subcarrier spacing of the data symbols, wherein L, N are positive integers, N represents the integral multiple of the number of subcarriers contained in the minimum resource allocation unit for data transmission, and L is more than 0 and less than or equal to N.
Optionally, the parameter
Figure GDA0001966889090000051
Wherein, X represents the number of data subcarriers in the frequency bandwidth corresponding to the minimum CSI feedback unit, and the CSI feedback is obtained based on the measurement reference signal.
Optionally, the parameter
Figure GDA0001966889090000052
Is a positive integer.
Optionally, the parameter
Figure GDA0001966889090000053
Where m1, m2 ∈ {0,1}, and m3 is an integer.
Optionally, the subcarrier spacing of the measurement reference symbols is less than or equal to the coherence bandwidth of the channel.
Optionally, the sounding reference signal corresponding to one or more sounding reference symbol ports is sent on one beam sounding reference OFDM symbol.
Optionally, when there are multiple ports of the sounding reference symbol on one sounding reference symbol, the ports transmit in a frequency domain code division multiplexing or frequency division manner.
Optionally, one of the beam measurement symbol ports corresponds to different or the same mixed beam on different resource grids of one beam measurement OFDM symbol;
wherein the different mixed beams are mixed beams weighted differently for a fixed beam combination corresponding to the N antenna groups; the beam combination contains the beam direction of each antenna group; the resource grid represents a time-frequency resource grid which has the duration equal to the duration occupied by the beam measurement reference OFDM symbol S-CSI-OFDM and the frequency domain width which is formed by the subcarrier intervals of the S-CSI-OFDM.
Optionally, when the duration of one of the sounding reference symbols is less than a duration of one data symbol, the sounding reference symbol is a single carrier symbol, and the data symbol is an OFDM symbol, it satisfies one or more of the following characteristics:
the sequence of the measurement reference signal on port j is
Figure GDA0001966889090000054
Wherein, SL represents the length of a time domain signal sequence sent by the port j at the single-carrier measurement reference symbol;
the time interval between two signals in the time domain signal sequence is TgapThen, the process of the present invention,
the duration of one single carrier measurement reference symbol is:
TCSI＝T1,CSI+TGP,T1,CSI＝Tgap*SL，T GP0 or TGP≥TDelayWherein, TDelayRepresents the maximum multipath delay; t isGPRepresenting the duration of a protection domain, wherein the power of a transmitted signal is 0;
the duration of one data symbol is:
TData＝TCP,Data+T1,Datawherein, TCP,DataIndicating the corresponding CP length on one data OFDM symbol; t is1,DataIndicating the length of time occupied by valid data of a data symbol, T when there are multiple data symbols in a transmission unit1,DataRefers to the longest data symbol duration;
wherein, TCSI≤TData；
Figure GDA0001966889090000061
L, N are all positive integers, N is an integer multiple of the number of sub-carriers contained in the minimum resource allocation unit for data transmission, 0<L≤N。
Optionally, the parameter
Figure GDA0001966889090000062
Is a positive integer.
Optionally, the parameter
Figure GDA0001966889090000063
Where m1, m2 ∈ {0,1}, and m3 is an integer.
Optionally, a duration of one single-carrier measurement reference symbol is less than or equal to a coherence time of a channel.
Optionally, one single-carrier measurement reference symbol carries one or more beam measurement ports; one beam measurement port corresponds to one mixed beam, and the mixed beam is kept unchanged on the system bandwidth occupied by the single-carrier symbols.
Optionally, a plurality of the beam measurement ports correspond to different mixed beams; different mixed beams corresponding to different beam measurement ports are mixed beams weighted by different base bands of a fixed beam combination corresponding to the N antenna groups; wherein the beam combinations comprise the beams of each antenna group.
Optionally, the measurement reference signal sequences corresponding to the multiple beam measurement ports are orthogonal to each other.
Optionally, the sounding reference signal transmitted on one single-carrier sounding reference symbol satisfies the following characteristics:
the measurement reference signal sequence corresponding to the beam measurement port j satisfies the following conditions:
Figure GDA0001966889090000064
Figure GDA0001966889090000065
wherein M is Tgap≤TDelayAnd | a | represents the absolute value of a, (a)*Represents the conjugation of a;
the measured reference signal sequences corresponding to the different ports j1 and j2 satisfy:
Figure GDA0001966889090000071
optionally, in a beam measurement period, P sounding reference symbols are included, and the P sounding reference symbols are in one transmission unit;
the P value is indicated by one or more of the following:
the information is obtained through high-level signaling notification, and/or through dynamic signaling notification, and/or through other information calculation; and/or is a fixed value.
Optionally, all P sounding reference symbols obtained in one transmission unit are located at the last bit of the transmission unit, no data symbol exists between the P sounding reference symbols, and no data symbol exists after the P sounding reference symbols in the transmission unit.
Optionally, when the P value is calculated by other information, the method includes:
Figure GDA0001966889090000072
btotal, Q are positive integers, Btotal represents the total number of beams that need to be transmitted for completing one beam scanning measurement on one frequency domain resource, and Q represents the number of beams that can be simultaneously transmitted on one measurement reference symbol on the one frequency domain resource.
Optionally, the time domain relation 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 a subframe time domain structure formed by the measurement reference symbols and the data symbols is fixed; alternatively, there are multiple sets of patterns, and one or more sets are selected through the indication information.
Optionally, when there are mixed beams, the different mixed beams are mixed beams weighted for different base bands 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, and is specifically expressed as:
Figure GDA0001966889090000073
wherein,
Figure GDA0001966889090000074
representing a directional diagram corresponding to the jth mixed beam;
Figure GDA0001966889090000075
representing a beam pattern corresponding to the ith antenna group, wherein the direction of the beam pattern is the direction of the beam group; the beam combination of the antenna groups represents the beam pattern combination of the N antenna groups as a combination of:
Figure GDA0001966889090000076
wherein,
Figure GDA0001966889090000077
a baseband weight adjustment scalar representing that the jth mixed beam corresponds to the ith antenna group, and a baseband weight vector corresponding to the jth mixed beam is:
Figure GDA0001966889090000078
optionally, the AF corresponding to different mixed beams weighted differently by the different baseband of the corresponding one fixed beam combination of the N antenna groupsRF(phi) are the same as each other,
Figure GDA0001966889090000079
different.
Optionally, when the determined multiplexing pattern type indicates that the multiplexing type is the third type of multiplexing manner, demodulation reference signal patterns are different in a data transmission unit without a measurement reference symbol and a transmission unit with the measurement reference symbol.
Optionally, all the sounding reference symbols in one transmission unit have no data between the last-bit beam sounding reference symbols in the transmission unit, and no data symbol is present after the sounding reference symbols in the transmission unit.
Optionally, the sounding reference signals corresponding to one or more sounding reference ports are sent on one OFDM symbol in frequency division multiplexing.
The invention also provides a method for realizing the transmission of the measurement reference symbol, which comprises the following steps:
the receiving end determines the multiplexing pattern type of the measurement reference symbol and the data symbol in a transmission unit which has the measurement reference symbol to be received;
and the receiving end receives the measurement reference symbols and/or the data symbols according to the determined multiplexing pattern type.
Optionally, the determining the multiplexing pattern type of the measurement reference symbol and the data symbol includes:
the receiving end and the transmitting end predetermine a multiplexing pattern type; or,
the receiving end invisibly notifies a group of multiplexing pattern categories according to the related time domain parameters of the transmission unit; or,
and the receiving end receives the multiplexing pattern type acquired by the signaling notification from the transmitting end.
Optionally, the determining the multiplexing pattern type of the measurement reference symbol and the data symbol includes:
and determining the multiplexing mode of the data symbols and the measurement reference signals according to whether the beams of the data symbols and the measurement reference signals collide.
Optionally, the determining a multiplexing manner of the data symbol and the sounding reference signal includes:
and determining whether the data symbols and the measurement reference signals are frequency division multiplexed according to whether the beams of the data symbols and the measurement reference signals are the same.
Optionally, the determining whether the data symbol and the sounding reference signal are frequency division multiplexed according to whether the beams of the data symbol and the sounding reference signal are the same includes at least one of:
the data symbols and the measurement reference signals are frequency division multiplexed when the beams of the data symbols and the measurement reference signals are the same;
when the beams of the data symbol and the measurement reference signal are different, the data symbol and the measurement reference signal are not on the same time domain symbol;
and when the beams of the data symbol and the measuring reference signal are different, the data symbol and the measuring reference signal are time division multiplexed.
Optionally, the determining whether the data symbol and the sounding reference signal are frequency division multiplexed according to whether the beams of the data symbol and the sounding reference signal are the same includes at least one of:
in one transmission unit, determining that the measurement beam and the data beam of at least one antenna group exist in at least one OFDM symbol in S OFDM symbols of the measurement reference symbol and the data symbol according to signaling information, wherein the measurement beam and the data beam of at least one antenna group exist in at least one OFDM symbol in different directions, and the measurement reference symbols and the data symbols of all antenna groups in the transmission unit are sent in a time division manner;
in one transmission unit, determining, according to signaling information, that the measurement reference symbol and the data symbol are received in a time division manner only on OFDM symbols in which the measurement beam and the data beam of at least one antenna group are different in direction, where the measurement beam and the data symbol of all antenna groups on the OFDM are received in a time division manner, and the measurement reference symbol and the data symbol are received in a time division manner or a frequency division manner on OFDM symbols in which the measurement beam and the data beam are the same in direction;
in one transmission unit, in S OFDM symbols multiplexed by a measurement reference symbol and a data symbol in a frequency division manner, only on an OFDM symbol in which a measurement beam of at least one antenna group and a data beam of the antenna group have different directions, the measurement reference symbol and the data symbol of the antenna group in which the measurement beam and the data beam of the antenna group have different directions are received in a time division manner, and the measurement reference symbol and the data symbol of the antenna group in which the measurement beam and the data beam of the antenna group have the same direction are received in a time division manner or a frequency division manner; and on the OFDM symbols with the same measuring beam and data beam directions, all the measuring reference symbols and data symbols on the OFDM symbols are transmitted in a time division or frequency division mode.
Optionally, the beams being identical comprises: the beams of the symbol belong to a set of beams.
Optionally, the beams being identical comprises: the symbol satisfies at least one of the following characteristics:
the symbols are associated with the same antenna group;
the symbols include at least one of: measurement reference signals, data channel signals, control channel signals, reference signals, synchronization signals.
Optionally, 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 carries out time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, the second type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the receiving end performs time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, the third type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; all demodulation reference signal ports occupy resource elements RE on all OFDM with measurement reference symbols, and among different OFDM with the measurement reference symbols, or among the OFDM with the measurement reference symbols and the OFDM without the measurement reference symbols, if code division multiplexing is carried out on the different demodulation reference signal ports, the different demodulation reference signal ports can only be in a frequency domain, and cannot be in time domain code division multiplexing; at this time, the channel estimation value of the same demodulation reference signal port at the receiving end between different OFDM with the measurement reference symbol cannot be subjected to time domain interpolation, the channel estimation value of the same demodulation reference signal port between OFDM with the measurement reference symbol and OFDM without the measurement reference symbol cannot be subjected to time domain interpolation, and the channel estimation value of the same demodulation reference signal port between OFDM without the measurement reference symbol can be subjected to time domain interpolation;
and/or, a fourth type multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbol adopts a first signaling to indicate a measurement reference symbol port with the transmission power of 0 or an OFDM symbol index with the transmission power of 0 corresponding to the measurement reference symbol port; the receiving end carries out time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, a fifth multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; indicating the OFDM symbol index with the data symbol transmitting power of 0 by adopting a second signaling; the receiving end carries out time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, the sixth multiplexing mode: time division multiplexing of part of the measurement reference symbols and the data symbols, and frequency division multiplexing of part of the measurement reference symbols and the data symbols; and the demodulation reference signal is only on OFDM of frequency division multiplexing or OFDM without measurement reference signal; the receiving end of the measurement reference symbol can perform time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols.
Optionally, when the multiplexing pattern type is any one of the first multiplexing manner to the sixth multiplexing manner, the srs corresponding to one srs port is only transmitted on one OFDM symbol of frequency division multiplexing, or only transmitted on one srs symbol of time division multiplexing.
Optionally, the multiplexing pattern type of the measurement reference symbol and the data symbol is a first type multiplexing mode and/or a sixth type multiplexing mode;
the transmission unit pattern satisfies the following characteristics:
one or more time-division multiplexed measurement reference symbols within the time-division multiplexed OFDM have no data symbols therebetween; and the number of the first and second groups,
the sum of the time durations of one or more of the time-division multiplexed measurement reference symbols is equal to the time 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 duration of one long data symbol; or,
for one transmission unit, the time domain is equal to the time domain length corresponding to the minimum unit of resource scheduling, and the frequency domain corresponds to all system bandwidths.
Optionally, the transmission unit pattern further satisfies: and carrying a beam measurement reference symbol on the long data symbol in the transmission unit in a frequency division multiplexing mode.
Optionally, when the multiplexing pattern category of the measurement reference symbols and the data symbols is a sixth type of multiplexing mode,
in different transmission units of all the beam reference symbols, the number of the time division multiplexing OFDM and the frequency division multiplexing OFDM is fixed or different; the number of measurement reference symbols and the duration of short data symbols within one time division multiplexing OFDM are fixed or different.
Optionally, the third indication information is notified by one or more of the following manners:
the number of the time division multiplexing OFDM and the frequency division multiplexing OFDM, the number of the measurement reference symbols in one time division multiplexing OFDM and the duration of the short data symbols are informed invisibly by downlink control information DCI command informing, and/or by higher layer signaling informing, and/or by informing the beam ID of the measurement reference symbols and the beam ID of the data symbols.
Optionally, when the third indication information is notified by notifying a beam ID of a measurement reference symbol and a beam ID of a data symbol, the method includes:
if at least one beam ID of the measurement reference symbol and at least one beam ID of a data symbol on the OFDM do not belong to any same beam ID set on the OFDM where the measurement reference symbol is located, the sending end determines that all the measurement reference symbols and the data symbol on the OFDM adopt time division multiplexing, and the number of the measurement reference symbols in the time division multiplexing OFDM is the number of the corresponding measurement reference symbols on the OFDM, so as to obtain the duration of the short data symbol;
and 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 subjected to frequency division multiplexing.
Optionally, the beam ID set is notified through signaling, or is pre-agreed by the transmitting end and the receiving end; there is no intersection between different beam ID sets;
the beam ID of the sounding reference symbol includes the beam IDs of all beam sounding reference ports carried on the sounding reference symbol.
Optionally, the beam ID of the data symbol is notified by one or more of the following:
sending a beam ID of a demodulation reference signal port corresponding to a demodulation downlink control signaling, wherein the beam IDs of all the demodulation reference ports corresponding to the downlink control signaling are the beam IDs of data symbols;
and/or sending the beam ID of the demodulation reference signal port corresponding to the demodulation downlink data channel, wherein all the beam IDs of the demodulation reference ports corresponding to the downlink data channel are the beam IDs of the data symbols.
Optionally, when the determined multiplexing pattern type shows time division multiplexing of measurement reference symbols and data symbols, the receiving the measurement reference symbols and the data symbols includes:
the measurement reference symbol and the data symbol are not overlapped 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 the subcarrier spacing of the data symbol.
Optionally, when the sounding reference symbol and the data transmission symbol are both OFDM symbols, the duration of one sounding reference symbol is less than or equal to the duration of one data symbol, and the subcarrier spacing of the sounding reference symbol is greater than or equal to the subcarrier spacing of the data symbol:
the subcarrier spacing of the measurement reference symbols is N/L times of the parameter of the subcarrier spacing of the data symbols, wherein L, N are positive integers, N represents the integral multiple of the number of subcarriers contained in the minimum resource allocation unit for data transmission, and L is more than 0 and less than or equal to N.
Optionally, the parameter
Figure GDA0001966889090000131
Wherein, X represents the number of data subcarriers in the frequency bandwidth corresponding to the minimum CSI feedback unit, and the CSI feedback is obtained based on the measurement reference signal.
Optionally, the parameter
Figure GDA0001966889090000132
Is a positive integer.
Optionally, the parameter
Figure GDA0001966889090000133
Where m1, m2 ∈ {0,1}, and m3 is an integer.
Optionally, when there are multiple ports of the sounding reference symbol on one sounding reference symbol, the ports transmit in a frequency domain code division multiplexing or frequency division manner.
Optionally, when the duration of one of the sounding reference symbols is less than the duration of one data symbol, the sounding reference symbol is a single carrier symbol, and the data symbol is an OFDM symbol, one or more of the following characteristics are satisfied:
the sequence of the measurement reference signal on port j is
Figure GDA0001966889090000134
Wherein, SL represents the length of a time domain signal sequence sent by the port j at the single-carrier measurement reference symbol;
the time interval between two signals in the time domain signal sequence is TgapThen, the process of the present invention,
the duration of one single carrier measurement reference symbol is:
TCSI＝T1,CSI+TGP,T1,CSI＝Tgap*SL，T GP0 or TGP≥TDelayWherein, TDelayRepresents the maximum multipath delay; t isGPRepresenting the duration of a protection domain, wherein the power of a transmitted signal is 0;
the duration of one data symbol is:
TData＝TCP,Data+T1,Datawherein, TCP,DataIndicating the corresponding CP length on one data OFDM symbol; t is1,DataIndicating the length of time occupied by valid data of a data symbol, T when there are multiple data symbols in a transmission unit1,DataRefers to the longest data symbol duration;
wherein, TCSI≤TData；
Figure GDA0001966889090000135
L, N are all positive integers, N is an integer multiple of the number of sub-carriers contained in the minimum resource allocation unit for data transmission, 0<L≤N。
Optionally, the parameter
Figure GDA0001966889090000136
Is a positive integer.
Optionally, the parameter
Figure GDA0001966889090000137
Where m1, m2 ∈ {0,1}, and m3 is an integer.
Optionally, a duration of one single-carrier measurement reference symbol is less than or equal to a coherence time of a channel.
Optionally, one single-carrier measurement reference symbol carries one or more beam measurement ports; one beam measurement port corresponds to one mixed beam, and the mixed beam is kept unchanged on the system bandwidth occupied by the single-carrier symbols.
Optionally, a plurality of the beam measurement ports correspond to different mixed beams; different mixed beams corresponding to different beam measurement ports are mixed beams weighted by different base bands of a fixed beam combination corresponding to the N antenna groups; wherein the beam combinations comprise the beams of each antenna group.
Optionally, the sounding reference signal transmitted on one single-carrier sounding reference symbol satisfies the following characteristics:
the measurement reference signal sequence corresponding to the beam measurement port j satisfies the following conditions:
Figure GDA0001966889090000141
Figure GDA0001966889090000142
wherein M is Tgap≤TDelayAnd | a | represents the absolute value of a, (a)*Represents the conjugation of a;
the measured reference signal sequences corresponding to the different ports j1 and j2 satisfy:
Figure GDA0001966889090000143
optionally, in a beam measurement period, P sounding reference symbols are included, and the P sounding reference symbols are in one transmission unit;
the P value is indicated by one or more of the following:
the information is obtained through high-level signaling notification, and/or through dynamic signaling notification, and/or through other information calculation; and/or is a fixed value.
Optionally, when there are mixed beams, the different mixed beams are mixed beams weighted for different base bands 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, and is specifically expressed as:
Figure GDA0001966889090000144
wherein,
Figure GDA0001966889090000145
representing a directional diagram corresponding to the jth mixed beam;
Figure GDA0001966889090000146
representing a beam pattern corresponding to the ith antenna group, wherein the direction of the beam pattern is the direction of the beam group; the beam combination of the antenna groups represents the beam pattern combination of the N antenna groups as a combination of:
Figure GDA0001966889090000147
wherein,
Figure GDA0001966889090000148
a baseband weight adjustment scalar representing that the jth mixed beam corresponds to the ith antenna group, and a baseband weight vector corresponding to the jth mixed beam is:
Figure GDA0001966889090000151
optionally, the AF corresponding to different mixed beams weighted differently by the different baseband of the corresponding one fixed beam combination of the N antenna groupsRF(phi) are the same as each other,
Figure GDA0001966889090000152
different.
Optionally, when the determined multiplexing pattern type indicates that the multiplexing type is the third type of multiplexing manner, demodulation reference signal patterns are different in a data transmission unit without a measurement reference symbol and a transmission unit with the measurement reference symbol.
Optionally, the receiving end receives the measurement reference symbol and/or the data symbol according to the determined multiplexing pattern type, where the receiving end includes at least one of the following:
the beams of the data symbols and the measurement reference signals which are frequency-division multiplexed on the same time domain symbol are the same;
the data symbols comprise signals except the measurement reference signals, and comprise data channel symbols, control channel symbols and reference signal symbols.
Optionally, when the frequency division manner is adopted, the sounding reference signals corresponding to one or more sounding reference ports are transmitted on one OFDM symbol in frequency division multiplexing.
The invention further provides a device for realizing the transmission of the measurement reference symbol, which comprises a first determining unit and a first processing unit; wherein,
a first determining unit, configured to determine, in a transmission unit where a sounding reference symbol needs to be sent, a multiplexing pattern type of the sounding reference symbol and a data symbol;
and the first processing unit is used for sending the measurement reference symbols and the data symbols according to the determined multiplexing pattern type.
Optionally, the first determining unit is specifically configured to: appointing a multiplexing pattern type in advance; or, a group of multiplexing pattern classes which are invisibly informed according to the relevant time domain parameters of the transmission unit; or, determining a multiplexing pattern type according to a result of whether the directions of the data beam to be transmitted and the radio frequency beam corresponding to the measuring beam conflict with each other, and notifying the multiplexing pattern type to the receiving end through signaling.
Optionally, the first processing module is specifically configured to: the measurement reference symbol and the data symbol are not overlapped 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 the subcarrier spacing of the data symbol.
Optionally, 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;
and/or, the second type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed;
and/or, the third type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; all demodulation reference signal ports occupy resource elements RE on all OFDM with measurement reference symbols, and among different OFDM with the measurement reference symbols, or among the OFDM with the measurement reference symbols and the OFDM without the measurement reference symbols, if code division multiplexing is carried out on the different demodulation reference signal ports, the different demodulation reference signal ports can only be in a frequency domain, and cannot be in time domain code division multiplexing;
and/or, a fourth type multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbol adopts a first signaling to indicate a measurement reference symbol port with the transmission power of 0 or an OFDM symbol index with the transmission power of 0 corresponding to the measurement reference symbol port;
and/or, a fifth multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; indicating the OFDM symbol index with the data symbol transmitting power of 0 by adopting a second signaling;
and/or, the sixth multiplexing mode: time division multiplexing of part of the measurement reference symbols and the data symbols, and frequency division multiplexing of part of the measurement reference symbols and the data symbols; and the demodulation reference signal is only on the OFDM of frequency division multiplexing or the OFDM without the measurement reference signal.
Optionally, when the multiplexing pattern type is any one of the first multiplexing manner to the sixth multiplexing manner, the srs corresponding to one srs port is only transmitted on one OFDM symbol of frequency division multiplexing, or only transmitted on one srs symbol of time division multiplexing.
Optionally, when the multiplexing mode is frequency division multiplexing, the frequency division multiplexing is: on OFDM with measurement reference symbols, the measurement reference symbols and the data symbols are subjected to frequency division multiplexing; there are OFDM symbols within the transmission unit that have no measurement reference symbols and only data symbols.
Optionally, the transmission unit that has the measurement reference symbol to send includes:
the transmission unit is a transmission unit where a periodic beam measurement reference symbol notified by a higher layer is located; or, the transmission unit is a transmission unit in which the aperiodic beam measurement reference symbol notified by the dynamic signaling is located.
Optionally, when the multiplexing pattern type of the measurement reference symbol and the data symbol is a first multiplexing mode and/or a sixth multiplexing mode, the transmission unit pattern satisfies the following characteristics:
one or more time-division multiplexed measurement reference symbols within the time-division multiplexed OFDM have no data symbols therebetween; and the number of the first and second groups,
the sum of the time lengths of one or more time division multiplexed measurement reference symbols is equal to the time length of one data symbol, or the sum of the time lengths of one or more time division multiplexed measurement reference symbols and the time length of one short data symbol is equal to the time length of one long data symbol;
for one transmission unit, the time domain is equal to the time domain length corresponding to the minimum unit of resource scheduling, and the frequency domain corresponds to all system bandwidths.
Optionally, the transmission unit pattern further satisfies: and carrying a beam measurement reference symbol on the long data symbol in the transmission unit in a frequency division multiplexing mode.
Optionally, when the multiplexing pattern category of the measurement reference symbols and the data symbols is a sixth type of multiplexing mode,
in different transmission units of all the beam reference symbols, the number of the time division multiplexing OFDM and the frequency division multiplexing OFDM is fixed or different; the number of measurement reference symbols and the duration of short data symbols within one time division multiplexing OFDM are fixed or different.
The invention also provides a device for realizing the transmission of the measurement reference symbol, which comprises a second determining unit and a second processing unit; wherein,
a second determining unit, configured to determine, in a transmission unit where a sounding reference symbol needs to be sent, a multiplexing pattern type of the sounding reference symbol and a data symbol;
and the second processing unit is used for receiving the measurement reference symbols and the data symbols according to the determined multiplexing pattern type.
Optionally, the second determining unit is specifically configured to: appointing a multiplexing pattern type in advance; or, a group of multiplexing pattern classes which are invisibly informed according to the relevant time domain parameters of the transmission unit; or receiving the multiplexing pattern type known by signaling from the transmitting end.
Optionally, the second processing module is specifically configured to: the measurement reference symbol and the data symbol are not overlapped 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 the subcarrier spacing of the data symbol.
Optionally, 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; performing time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, the second type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the receiving end performs time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, the third type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; all demodulation reference signal ports occupy resource elements RE on all OFDM with measurement reference symbols, and among different OFDM with the measurement reference symbols, or among the OFDM with the measurement reference symbols and the OFDM without the measurement reference symbols, if code division multiplexing is carried out on the different demodulation reference signal ports, the different demodulation reference signal ports can only be in a frequency domain, and cannot be in time domain code division multiplexing; at this time, the channel estimation value of the same demodulation reference signal port of the device cannot be subjected to time domain interpolation between different OFDM with the measurement reference symbol, the channel estimation value of the same demodulation reference signal port between OFDM with the measurement reference symbol and OFDM without the measurement reference symbol cannot be subjected to time domain interpolation, and the channel estimation value of the same demodulation reference signal port between OFDM without the measurement reference symbol can be subjected to time domain interpolation;
and/or, a fourth type multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbol adopts a first signaling to indicate a measurement reference symbol port with the transmission power of 0 or an OFDM symbol index with the transmission power of 0 corresponding to the measurement reference symbol port; at the moment, the channel estimation values of the same demodulation reference signal port of the device on different OFDM symbols are subjected to time domain interpolation;
and/or, a fifth multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbol adopts an OFDM symbol index of which the second signaling indicates that the data symbol transmission power is 0; at the moment, the channel estimation values of the same demodulation reference signal port of the device on different OFDM symbols are subjected to time domain interpolation;
and/or, the sixth multiplexing mode: time division multiplexing of part of the measurement reference symbols and the data symbols, and frequency division multiplexing of part of the measurement reference symbols and the data symbols; and the demodulation reference signal is only on OFDM of frequency division multiplexing or OFDM without measurement reference signal; the receiving end of the measurement reference symbol can perform time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols.
Optionally, when the multiplexing pattern type is any one of the first multiplexing manner to the sixth multiplexing manner, the srs corresponding to one srs port is only transmitted on one OFDM symbol of frequency division multiplexing, or only transmitted on one srs symbol of time division multiplexing.
Optionally, the transmission unit that has the measurement reference symbol to send includes:
the transmission unit is a transmission unit where a periodic beam measurement reference symbol notified by a higher layer is located; or,
the transmission unit is the transmission unit where the aperiodic beam measurement reference symbol notified by the dynamic signaling is located.
Optionally, when the multiplexing pattern type of the measurement reference symbol and the data symbol is a first multiplexing mode and/or a sixth multiplexing mode, a transmission unit pattern thereof satisfies the following characteristics:
one or more time-division multiplexed measurement reference symbols within the time-division multiplexed OFDM have no data symbols therebetween; and the number of the first and second groups,
the sum of the time durations of one or more time-division multiplexed measurement reference symbols is equal to the time 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 the duration of one long data symbol;
for a transmission unit, the time domain is equal to the time domain length corresponding to the minimum unit of resource scheduling, and the frequency domain corresponds to all system bandwidths.
Optionally, the transmission unit pattern further satisfies: and carrying a beam measurement reference symbol on the long data symbol in the transmission unit in a frequency division multiplexing mode.
Optionally, when the multiplexing pattern type is any one of the first multiplexing manner to the sixth multiplexing manner, the srs corresponding to one srs port is only transmitted on one OFDM symbol of frequency division multiplexing, or only transmitted on one srs symbol of time division multiplexing.
The application also provides a signal transmission method, which comprises the following steps:
there is a relationship between the beam relationship of the N signals and the multiplexing manner of the N signals, where N is a positive integer greater than or equal to 2.
Optionally, the association between the beam relationship of the N signals and the multiplexing manner of the N signals includes at least one of:
determining a multiplexing mode of the N signals according to the beam relationship of the N signals;
under the condition that N signals are in the same time domain symbol, the wave beams of the N signals are the same;
optionally, the determining the multiplexing mode of the N signals according to the beam relationship of the N signals includes at least one of:
the N signals can be frequency division multiplexed when the beams of the N signals are the same;
when the wave beams of the N signals are different, the N signals cannot be subjected to frequency division multiplexing;
when the wave beams of the N signals are different, the N signals are time division multiplexed;
when the beams of the N signals are different, one or more signals in the N signals are not transmitted.
Optionally, the beams of the N signals being the same include: the beams of the N signals belong to one beam set.
Optionally, the N signals satisfy at least one of the following characteristics:
the N signals are associated with the same antenna group;
the signal comprises at least one of: measurement reference signals, data channel signals, control channel signals, reference signals, synchronization signals.
The application further provides a signal transmission device, which comprises a processing module: and the method is used for associating the beam relationship of the N signals with the multiplexing mode of the N signals, wherein N is a positive integer greater than or equal to 2.
Optionally, the association between the beam relationship of the N signals and the multiplexing manner of the N signals includes at least one of:
determining a multiplexing mode of the N signals according to the beam relationship of the N signals;
in the case of N signals in the same time domain symbol, the beams of the N signals are the same.
Optionally, the determining the multiplexing mode of the N signals according to the beam relationship of the N signals includes at least one of:
the N signals can be frequency division multiplexed when the beams of the N signals are the same;
when the wave beams of the N signals are different, the N signals cannot be subjected to frequency division multiplexing;
when the wave beams of the N signals are different, the N signals are time division multiplexed;
when the beams of the N signals are different, one or more signals in the N signals are not transmitted.
Optionally, the beams of the N signals being the same include: the beams of the N signals belong to one beam set.
Optionally, the N signals satisfy at least one of the following characteristics:
the N signals are associated with the same antenna group;
the signal comprises at least one of: measurement reference signals, data channel signals, control channel signals, reference signals, synchronization signals.
Compared with the prior art, the technical scheme of the application comprises the following steps: determining the multiplexing pattern type of a measurement reference symbol and a data symbol in a transmission unit which needs to send the measurement reference symbol; and transmitting and receiving the measurement reference symbols and the data symbols according to the determined multiplexing pattern type. According to the technical scheme provided by the invention, the measurement reference symbols and the data symbols are received and transmitted according to the determined multiplexing pattern types of the measurement reference symbols and the data symbols, so that the problem of conflict between the measurement wave beams and the data wave beams on the requirements of limited radio frequency link radio frequency wave beam directions is solved. Particularly, when the determined multiplexing pattern types of the measurement reference symbols and the data symbols are displayed as time division multiplexing, the problem of conflict between the measurement beams and the data beams to the requirement of the limited radio frequency link radio frequency beam direction is effectively avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a method for implementing transmission of sounding reference symbols according to the present invention;
FIG. 2 is a diagram of a communication model with hybrid beamforming;
FIG. 3 is a schematic diagram of a first embodiment of a time domain relationship pattern of a measurement reference signal and a data symbol according to the present invention;
FIG. 4 is a diagram illustrating a second embodiment of measuring a time domain relationship pattern of a reference signal and a data symbol according to the present invention;
FIG. 5 is a diagram illustrating a third embodiment of measuring a time domain relationship pattern of a reference signal and a data symbol according to the present invention;
FIG. 6 is a diagram illustrating a fourth embodiment of measuring a time domain relationship pattern of a reference signal and a data symbol according to the present invention;
fig. 7 is a schematic structural diagram of a first embodiment of the S domain when P is 1 according to the present invention;
fig. 8 is a schematic structural diagram of a first embodiment of the S domain when P is 2 according to the present invention;
fig. 9 is a schematic structural diagram of a first embodiment of the S domain when P is 4 according to the present invention;
fig. 10 is a schematic structural diagram of a first embodiment of the S domain when P is 8 according to the present invention;
fig. 11 is a schematic structural diagram of a second embodiment of the S domain when P is 8 according to the present invention;
fig. 12 is a schematic structural diagram of a second embodiment of the S domain when P is 1 according to the present invention;
fig. 13 is a schematic structural diagram of a second embodiment of the S domain when P is 2 according to the present invention;
fig. 14 is a schematic structural diagram of a second embodiment of the S domain when P is 4 according to the present invention;
fig. 15 is a schematic structural diagram of a third embodiment of the S domain when P is 8 according to the present invention;
fig. 16 is a schematic structural diagram of a fourth embodiment of the S domain when P is 8 according to the present invention;
fig. 17 is a schematic structural diagram of a third embodiment of the S domain when P is 1 according to the present invention;
fig. 18 is a schematic structural diagram of a third embodiment of the S domain when P is 2 according to the present invention;
fig. 19 is a schematic structural diagram of a third embodiment of the S domain when P is 4 according to the present invention;
fig. 20 is a schematic structural diagram of a fifth embodiment of the S domain when P is 8 according to the present invention;
fig. 21 is a schematic structural diagram of a sixth embodiment of the S domain when P is 8 according to the present invention;
fig. 22 is a structural pattern of an embodiment of a transmission unit when P is 1 according to the present invention;
fig. 23 is a structural pattern of an embodiment of a transmission unit when P is 2 according to the present invention;
fig. 24 is a structural pattern of an embodiment of a transmission unit when P is 4 according to the present invention;
FIG. 25 is a structural diagram of an embodiment of a time domain period for periodically transmitting a sounding reference signal according to the present invention;
FIG. 26 is a schematic diagram of an embodiment of the present invention in which the RF beam patterns of the RF links are different;
FIG. 27 is a diagram illustrating an embodiment of different RF link beam patterns corresponding to each resource bin on a measurement reference symbol according to the invention;
FIG. 28 is a schematic diagram of an embodiment of the present invention in which the RF beam patterns of the RF links are the same;
fig. 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 diagram illustrating a subframe structure of a SRS Transmission unit according to a first embodiment of the present invention;
FIG. 31 is a diagram illustrating a subframe structure of a SRS transmitting unit according to a second embodiment of the present invention;
FIG. 32 is a diagram illustrating a subframe structure of a SRS transmitting unit according to a third embodiment of the present invention;
FIG. 33 is a diagram illustrating frequency division multiplexing of a sounding reference signal and data symbols in accordance with the present invention;
FIG. 34 is a diagram of an OFDM pattern for frequency division multiplexing of measurement reference signals and data symbols in accordance with the present invention;
FIG. 35(a) is a diagram of a first embodiment of patterns for measuring reference symbols and demodulating reference symbols in a third multiplexing category according to the present invention;
FIG. 35(b) is a diagram of a second embodiment of patterns for measuring reference symbols and demodulating reference symbols in a third multiplexing category according to the present invention;
FIG. 35(c) is a diagram of a third embodiment of patterns for measuring reference symbols and demodulating reference symbols in a third multiplexing category according to the invention;
FIG. 35(d) is a diagram of a fourth embodiment of patterns for measuring reference symbols and demodulating reference symbols in accordance with the third multiplexing category of the present invention;
FIG. 35(e) is a diagram of a fifth embodiment of patterns for measuring reference symbols and demodulating reference symbols in the third multiplexing category of the present invention;
FIG. 35(f) is a diagram of a sixth embodiment of patterns for measuring reference symbols and demodulating reference symbols in a third multiplexing category according to the invention;
fig. 36 is a diagram of an embodiment of transmitting a pattern on only one sounding reference symbol by one beam sounding reference port in time division multiplexing according to the present invention.
FIG. 37 is a schematic diagram of a structure of an apparatus for implementing transmission of SRS in accordance with the present invention;
FIG. 38 is a schematic diagram of another exemplary embodiment of an apparatus for implementing SRS transmission according to the present invention;
FIG. 39 is a diagram illustrating a first embodiment of a SRS at the last bit of a transmitting unit in accordance with the present invention;
FIG. 40 is a diagram illustrating a second embodiment of a SRS measurement unit at the last bit of a transmitting unit according to the present invention;
FIG. 41 is a diagram illustrating a third embodiment of a SRS device according to the present invention at the last transmission unit bit;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The rf processing is a time domain signal, and the rf beam acts on all subbands and is not variable within one Orthogonal Frequency Division Multiplexing (OFDM) symbol. However, a general radio frequency link is limited, that is, the direction of the radio frequency link on one OFDM symbol is relatively limited, meanwhile, the available bandwidth of a high frequency is very large, and the optimal data transmission beams on each sub-band are different, so that the limited radio frequency beams are far insufficient to satisfy the optimal data service transmission beams on different sub-bands. If the measurement reference signal is multiplexed in the OFDM structure of the LTE according to the existing Long Term Evolution (LTE) system, a limited radio frequency link also needs to extract a part of the radio frequency link for transmitting the measurement signal, and the problem is serious especially when there is no intersection between the data beam and the measurement beam. Moreover, because the data beam is relatively random based on the service requirement of the user, if the measurement signal is transmitted according to the existing LTE system, the measurement time delay is greatly increased. Such as: the data beams are all beam 1, beam 2, beam 3 and beam 4 in 3 subframes (the optimal beams of the users with service needs are concentrated in beam 1, beam 2, beam 3 and beam 4 at this time), while the measurement beams need to poll for transmission in beam 1, beam 2, beam 3, beam 4, beam 5, beam 6, beam 7 and beam 8, at this time, the measurement beams are affected by the data beams, thereby affecting the measurement period. Alternatively, the order of transmission of the data beams is not a polling scheme, and the measurement period may be affected. Meanwhile, in order to reduce the beam training load, a data beam is generally not changed on one Physical Resource Block (PRB) Resource, but beam measurement is to complete measurement of multiple beams in one subframe, and at this time, the data beam and the measurement beam inevitably generate directional collision. If multiple streams are sent to a user, multiple radio frequency links may need to be used on one subband, and beam training needs to be performed on the user for each radio frequency link, so that competitive use of the limited radio frequency links by the measurement beam and the data beam is more prominent. Furthermore, since it is desirable to transmit all the measurement beams that need to be transmitted in one beam measurement period in as few transmission units as possible, the direction of the data beam in one transmission unit is generally fixed, which undoubtedly makes the measurement beam and the data beam contend for using a limited radio frequency link.
That is, due to the limited number of radio links, when the measurement beam and the data beam are different, collision may occur in transmitting and receiving the reference symbol according to the transmission pattern of the measurement pilot (CSI-RS) in the existing LTE.
Fig. 1 is a flowchart of a method for implementing measurement reference symbol transmission according to the present invention, as shown in fig. 1, including:
step 100: and determining the multiplexing pattern type of the measurement reference symbols and the data symbols in a transmission unit to be transmitted by the measurement reference symbols.
The transmission unit in this step, which has the measurement reference symbol to send, is:
a transmission unit where a periodic beam measurement reference symbol notified by a higher layer is located; or,
and the aperiodic beam notified by the dynamic signaling measures the transmission unit where the reference symbol is located.
Determining the multiplexing pattern type of the measurement reference symbol and the data symbol in the step comprises:
a transmitting end and a receiving end agree a multiplexing pattern type in advance; or,
the transmitting end and the receiving end respectively obtain a group of multiplexing pattern categories according to a group of invisible notifications of relevant time domain parameters of the transmission unit, and one implementation mode is that the multiplexing categories are obtained according to a time slot number and a subframe number, such as class _ t ═ mod (n)f1*20+nf6) in which n isf1Is the system frame number, nfThe subframe number is the subframe number, so that the advantages and the disadvantages of various multiplexing modes can be fully utilized, the frequency spectrum utilization rate is improved, and meanwhile, the signaling overhead is reduced; or,
the method comprises the steps that a sending end determines a multiplexing pattern type according to the result that whether the requirements of a data beam corresponding to data needing to be sent and a measuring beam corresponding to a measuring reference symbol on a radio frequency link beam conflict or not, and informs a receiving end through signaling, and correspondingly, the receiving end receives the multiplexing pattern type obtained through signaling notification from the sending end.
Wherein,
for the transmitting end, the multiplexing pattern categories of the sounding 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; different demodulation reference signal ports can be subjected to time domain code division multiplexing;
and/or, the second type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the demodulation reference signal and the measurement reference symbol can be subjected to frequency division multiplexing on the same OFDM, and different demodulation reference signal ports can be subjected to code division multiplexing in a time domain;
and/or, the third type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; all demodulation reference signal ports occupy Resource Elements (REs) between all OFDM with the measurement reference symbols and different OFDM with the measurement reference symbols, or between OFDM with the measurement reference symbols and OFDM without the measurement reference symbols; if code division multiplexing of different demodulation reference signal ports can only be carried out in a frequency domain, code division multiplexing can not be carried out in a time domain;
and/or, a fourth type multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the demodulation reference signal and the measurement reference symbol can be subjected to frequency division multiplexing on the same OFDM, and different demodulation reference signal ports can be subjected to code division multiplexing in a time domain; the measurement reference symbol may use a first signaling to indicate a measurement reference symbol port with transmission power of 0 or an OFDM symbol index with transmission power of 0 corresponding to the measurement reference symbol port;
and/or, a fifth multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the demodulation reference signal and the measurement reference symbol can be subjected to frequency division multiplexing on the same OFDM, and different demodulation reference signal ports can be subjected to code division multiplexing in a time domain; the measurement reference symbol may use an OFDM symbol index where the second signaling indicates that the data symbol transmission power is 0;
and/or, the sixth multiplexing mode: time division multiplexing of part of the measurement reference symbols and the data symbols, and frequency division multiplexing of part of the measurement reference symbols and the data symbols; and the demodulation reference signal is only on OFDM of frequency division multiplexing or OFDM without measurement reference signal; on OFDM with frequency division multiplexing of the sounding reference symbol and the data symbol, the demodulation reference signal and the sounding reference symbol may be frequency division multiplexed on the same OFDM; the different demodulation reference signal ports may be code division multiplexed in the time domain.
When the multiplexing mode is frequency division multiplexing, the frequency division multiplexing is as follows: on OFDM with measurement reference symbols, the measurement reference symbols and the data symbols are subjected to frequency division multiplexing;
there are OFDM symbols within the transmission unit that have no measurement reference symbols and only data symbols.
For the receiving end, the multiplexing pattern categories of the measurement reference symbols and the data symbols may be:
the first type of multiplexing mode: all measurement reference symbols and data symbols are time division multiplexed. At this time, the receiving end can perform time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, the second type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the receiving end can perform time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, the third type of administration: all measurement reference symbols and data symbols are frequency division multiplexed; and all demodulation reference signal ports occupy RE on OFDM with the measurement reference symbols, and the different OFDM occupied by the measurement reference symbols or between OFDM with the measurement reference symbols and OFDM without the measurement reference symbols, the different demodulation reference signal ports can only be in the frequency domain if code division multiplexing, and can not be in the time domain. At this time, the channel estimation value of the same demodulation reference signal port at the receiving end between different OFDM with the measurement reference symbol cannot be subjected to time domain interpolation, the channel estimation value of the same demodulation reference signal port between OFDM with the measurement reference symbol and OFDM without the measurement reference symbol cannot be subjected to time domain interpolation, and the channel estimation value of the same demodulation reference signal port between OFDM without the measurement reference symbol can be subjected to time domain interpolation;
and/or, a fourth type multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the sounding reference symbol may use a sounding reference symbol port with a first signaling indication transmission power of 0 or an OFDM symbol index with a sounding reference symbol port transmission power of 0. At the moment, the receiving end carries out time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, a fifth multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the sounding reference symbol may use an OFDM symbol index indicating that data symbol transmission power is 0 by the second signaling. At the moment, the receiving end carries out time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, the sixth multiplexing mode: time division multiplexing of part of the measurement reference symbols and the data symbols, and frequency division multiplexing of part of the measurement reference symbols and the data symbols; and the demodulation reference signal is only on OFDM of frequency division multiplexing or OFDM without measurement reference signal; the receiving end of the measurement reference symbol can perform time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols.
Wherein,
the multiplexing patterns are different in types, signaling to be notified by a sending end is different, demodulation reference signal patterns correspondingly sent by the sending end are different, and multiplexing modes of different demodulation reference signal ports are different.
When the multiplexing pattern type is any one of the first multiplexing mode to the sixth multiplexing mode, the sounding reference signal corresponding to one sounding reference port is only transmitted on one OFDM symbol of frequency division multiplexing or only transmitted on one sounding reference symbol of time division multiplexing.
And transmitting the measurement reference signals corresponding to one or more measurement reference ports on one OFDM symbol by frequency division multiplexing, wherein the measurement reference ports are transmitted by adopting a frequency domain code division and/or frequency division multiplexing mode.
Specifically, for the first type multiplexing mode and/or the sixth type multiplexing mode, the transmission unit pattern thereof satisfies the following characteristics:
one or more time-division multiplexed measurement reference symbols within the time-division multiplexed OFDM have no data symbols therebetween; and the number of the first and second groups,
the sum of the time lengths of one or more time division multiplexing measurement reference symbols is equal to the time length of one data symbol, and at the moment, the time domain occupied by one or more measurement reference symbols is called time division multiplexing OFDM; or the sum of the duration of one or more time-division multiplexed sounding reference symbols and the duration of one short data symbol is equal to the duration of one long data symbol. Preferably, the short data symbols can also carry the sounding reference signals in a frequency division multiplexing manner. At this time, a time domain occupied by one or more sounding reference symbols and one short data symbol is referred to as one time division multiplexing OFDM.
For a transmission unit, the time domain is equal to the time domain length corresponding to the minimum unit of resource scheduling, and the frequency domain corresponds to all system bandwidths.
In addition, the transmission unit pattern also satisfies: and carrying a beam measurement reference symbol on the short data symbol in the transmission unit in a frequency division multiplexing mode.
When the multiplexing pattern type of the measurement reference symbols and the data symbols is the sixth type of multiplexing mode,
in different transmission units of all beam reference symbols, the number of the time division multiplexing OFDM and the frequency division multiplexing OFDM can be fixed or different, and the number of the measurement reference symbols and the duration of the short data symbols in one time division multiplexing OFDM can be fixed, namely the same or different. When the number of the time division multiplexing OFDM and the frequency division multiplexing OFDM is different, or the number of the measurement reference symbols and the duration of the short data symbol in one time division multiplexing OFDM are different, the notification may be performed through the third indication information.
When the number of the time division multiplexing OFDM symbols and the number of the frequency division multiplexing OFDM symbols and the number of the measurement reference symbols in one time division multiplexing OFDM symbol need to be notified by using the third indication information, the third indication information may be notified in one or more of the following manners:
the number of time division multiplexing OFDM and frequency division multiplexing OFDM, and the number of measurement reference symbols and the duration of a short data symbol within one time division multiplexing OFDM are implicitly notified by a Downlink Control Information (DCI) command notification, and/or by higher layer signaling, and/or by notifying a beam ID of a measurement reference symbol and a beam ID of a data symbol.
The method for invisibly notifying the numbers of the time division multiplexing OFDM and the frequency division multiplexing OFDM, the number of the measurement reference symbols in one time division multiplexing OFDM and the duration of the short data symbols by notifying the beam ID of the measurement reference symbol and the beam ID of the data symbol specifically includes:
for the sending end:
firstly, the transmitting end assumes that all the measurement reference signals are transmitted in a frequency division multiplexing mode, if at least one beam ID of one measurement reference symbol and at least one beam ID of a data symbol on the OFDM do not belong to any same beam ID set on the OFDM where the measurement reference symbol is located, the sending end determines that all the measurement reference symbols and data symbols on the OFDM are sent in a time division multiplexing mode, i.e. the time duration occupied by one long data OFDM symbol is divided into one or more time-division multiplexed measurement reference symbols, or into one or more time-division multiplexed measurement reference symbols and a short data symbol, in which case the time domain occupied by the corresponding long data symbol is referred to as a time-division multiplexed OFDM for short, and the number of the measurement reference symbols in the OFDM of the time division multiplexing is the number of the corresponding measurement reference symbols on the OFDM, so as to obtain the duration of the short data symbols. And on the OFDM where the measurement reference symbol is positioned, 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 subjected to frequency division multiplexing. Wherein,
the beam ID set may be signaled or pre-agreed by the transmitting end and the receiving end. There is no intersection between the different sets of beam IDs.
The beam ID of the sounding reference symbol contains the beam IDs of all beam sounding reference ports carried on the sounding reference symbol.
The transmitting end may notify the beam ID of the data symbol by one or more of the following ways:
sending a beam ID of a demodulation reference signal port corresponding to a demodulation downlink control signaling, wherein the beam IDs of all the demodulation reference ports corresponding to the downlink control signaling are the beam IDs of data symbols; and/or sending the beam ID of the demodulation reference signal port corresponding to the demodulation downlink data channel, wherein all the beam IDs of the demodulation reference ports corresponding to the downlink data channel are the beam IDs of the data symbols.
For the receiving end:
firstly, a receiving end assumes that all measurement reference signals are sent in a frequency division multiplexing mode, if at least one beam ID of a measurement reference symbol and a beam ID of a data symbol on the OFDM do not belong to any same beam ID set on the OFDM where the measurement reference symbol is located, the receiving end determines that the measurement reference symbol and the data symbol adopt time division multiplexing, and the number of the measurement reference symbols in the OFDM of the time division multiplexing is the number of the corresponding measurement reference symbols on the OFDM, so as to obtain the duration of the short data symbol. And on the OFDM where the measurement reference symbol is positioned, 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 subjected to frequency division multiplexing. Wherein,
the beam ID set may be signaled or pre-agreed by the transmitting end and the receiving end. There is no intersection between the different sets of beam IDs.
The beam ID of the sounding reference symbol contains the beam IDs of all beam sounding reference ports carried on the sounding reference symbol.
The receiving end may obtain the beam ID of the data symbol by one or more of the following manners:
obtaining a beam ID of a demodulation reference port corresponding to a downlink control signaling, wherein the beam IDs of all the demodulation reference ports corresponding to the downlink control signaling are the beam IDs of data symbols; and/or obtaining the beam ID of the demodulation reference port corresponding to the sending and demodulating downlink data channel, wherein all the beam IDs of the demodulation reference ports corresponding to the downlink data channel are the beam IDs of the data symbols.
Step 101: and transmitting and receiving the measurement reference symbols and the data symbols according to the determined multiplexing pattern type.
When the determined multiplexing pattern type includes the measurement reference symbol and the data symbol in time division multiplexing (which includes a first multiplexing mode that all uses time division multiplexing and a sixth multiplexing mode that partially uses time division multiplexing), the transceiving of the measurement reference symbol and the data symbol in this step includes:
the time domains of the measurement reference symbol and the data symbol are not overlapped, and the frequency domains are completely overlapped; 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 sounding reference symbols within a transmission unit are at the last bit of the transmission unit, there is no data between the sounding reference symbols, and there is no data symbol after the sounding reference symbols within the transmission unit.
If the symbol where the sounding reference symbol is located is an OFDM symbol, if different beam sounding reference ports are code-division multiplexed, the sounding reference symbols can only be code-division multiplexed in the frequency domain.
Wherein,
when the measurement reference symbol and the data transmission symbol are both OFDM symbols, 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:
a duration of one measurement reference symbol includes a cyclic shift (CP) length;
the duration of one data symbol comprises the CP length, and when a plurality of data OFDM symbols with different durations exist in one transmission unit, the duration of the data symbol refers to the duration of the data symbol with the longest duration in the transmission unit;
the subcarrier spacing of the measurement reference symbols is N/L times of the subcarrier spacing of the data symbols, wherein L, N are positive integers, N represents the integral multiple of the number of subcarriers contained in the data transmission minimum resource allocation unit, and 0< L is less than or equal to N.
Further, the air conditioner is provided with a fan,
Figure GDA0001966889090000311
wherein, X represents the number of data subcarriers in the frequency bandwidth corresponding to the minimum CSI feedback unit, and the CSI feedback is obtained based on the measurement reference signal.
Preferably, the first and second electrodes are formed of a metal,
Figure GDA0001966889090000312
is a positive integer. Preferably, the first and second electrodes are formed of a metal,
Figure GDA0001966889090000313
where m1, m2 ∈ {0,1}, and m3 is an integer. When there are a plurality of data subcarrier spacings in one transmission unit, the subcarrier spacing of the measurement reference symbol refers to the data subcarrier spacing having the smallest subcarrier spacing.
Further, the subcarrier spacing of the measurement reference symbols is less than or equal to the coherence bandwidth of the channel.
Wherein, on one beam measurement reference OFDM symbol (hereinafter, abbreviated as S-CSI-OFDM), the measurement reference signal corresponding to one or more measurement reference symbol ports is transmitted.
Further, when a plurality of beam measurement ports are arranged on one measurement reference symbol, the ports are transmitted in a frequency domain code division multiplexing or frequency division mode;
furthermore, one of the beam measurement symbol ports corresponds to different or the same mixed beam on different resource grids of one beam measurement OFDM symbol; wherein the different mixed beams are mixed beams weighted differently for a fixed beam combination corresponding to the N antenna groups; the beam combination contains the beam direction of each antenna group; the resource grid represents a time-frequency resource grid formed by subcarrier intervals with the time length equal to the occupied time length of the S-CSI-OFDM and the frequency domain width of the S-CSI-OFDM.
Wherein,
when the duration of a measurement reference symbol is less than the duration of a data symbol, the measurement reference symbol is a single-carrier symbol, and the data symbol is an OFDM symbol, one or more of the following characteristics are satisfied:
the sequence of the measurement reference signal on port j is
Figure GDA0001966889090000321
Wherein, SL represents the length of the time domain signal sequence transmitted by the port j at the single-carrier measurement reference symbol, wherein the time interval between two signals in the time domain signal sequence is TgapThen, the process of the present invention,
the duration of one single carrier measurement reference symbol is:
TCSI＝T1,CSI+TGP,T1,CSI＝Tgap*SL，T GP0 or TGP≥TDelayWherein, TDelayRepresents the maximum multipath delay; t isGPRepresenting the duration of a protection domain, wherein the power of a transmitted signal is 0;
the duration of one data symbol is:
TData＝TCP,Data+T1,Datawherein, TCP,DataIndicating the corresponding CP length on one data OFDM symbol; t is1,DataIndicating the length of time occupied by valid data of a data symbol, T when there are multiple data symbols in a transmission unit1,DataRefers to the longest data symbol duration;
wherein, TCSI≤TData；
Figure GDA0001966889090000322
L, N are all positive integers, N is an integer multiple of the number of sub-carriers contained in the minimum resource allocation unit for data transmission, 0<L≤N。
Preferably, the first and second electrodes are formed of a metal,
Figure GDA0001966889090000323
is a positive integer. It is further preferred that the first and second liquid crystal compositions,
Figure GDA0001966889090000324
where m1, m2 ∈ {0,1}, and m3 is an integer.
The duration of one single-carrier measurement reference symbol is less than or equal to the coherence time of the channel.
Further, the air conditioner is provided with a fan,
one or more beam measurement ports are carried on one single carrier measurement reference symbol (S-CSI-Time Sequence for short); one beam measurement port corresponds to one mixed beam, and the mixed beam is kept unchanged on the system bandwidth occupied by the single-carrier symbols.
The plurality of beam measurement ports correspond to different mixed beams; different mixed beams corresponding to different beam measurement ports are mixed beams weighted by different base bands of a fixed beam combination corresponding to the N antenna groups; wherein the beam combinations comprise the beams of each antenna group.
The corresponding measurement reference signal sequences of the plurality of beam measurement ports are orthogonal.
Further, the air conditioner is provided with a fan,
the sounding reference signal transmitted on one single carrier sounding 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 following conditions:
Figure GDA0001966889090000331
Figure GDA0001966889090000332
wherein M is Tgap≤TDelayAnd | a | represents the absolute value of a, (a)*Represents the conjugation of a.
The measured reference signal sequences corresponding to the different ports j1 and j2 satisfy:
Figure GDA0001966889090000333
wherein,
in one beam measurement period, P measurement reference symbols are contained, and the P measurement reference symbols are in one transmission unit. The P value is indicated by one or more of the following:
the information is obtained through high-level signaling notification, and/or through dynamic signaling notification, and/or through other information calculation; and/or is a fixed value.
The P sounding reference symbols obtained in one transmission unit are located at the last bit of the transmission unit, no data symbol exists between the P sounding reference symbols, and no data symbol exists after the P sounding reference symbols in the transmission unit.
When the P value is calculated by other information, the method includes:
Figure GDA0001966889090000334
wherein Btotal and Q are positive integers, Btotal represents the total number of beams required to be transmitted for completing one beam scanning measurement on one frequency domain resource, and Q represents the number of beams required to be transmitted on the frequency domain resourceAnd measuring the number of beams which can be simultaneously transmitted on the reference symbol.
Wherein,
the time domain relation pattern of the P measurement reference symbols and the data symbols in one beam measurement period satisfies one of the following characteristics:
the pattern is fixed, namely a subframe time domain structure formed by the measurement reference symbols and the data symbols is fixed; or,
there are several sets of patterns, and one or several sets are selected by the indication information.
Wherein,
when a mixed beam exists, the different mixed beams are mixed beams weighted for different base bands 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, which is specifically expressed as:
Figure GDA0001966889090000341
wherein,
Figure GDA0001966889090000342
representing a directional diagram corresponding to the jth mixed beam;
Figure GDA0001966889090000343
representing a beam pattern corresponding to the ith antenna group, wherein the direction of the beam pattern is the direction of the beam group; the beam combination of the antenna groups represents the beam pattern combination of the N antenna groups as a combination of:
Figure GDA0001966889090000344
wherein,
Figure GDA0001966889090000345
a baseband weight adjustment scalar representing that the jth mixed beam corresponds to the ith antenna group, and a baseband weight vector corresponding to the jth mixed beam is:
Figure GDA0001966889090000346
further, AF for different mixed beams weighted differently for different baseband of corresponding one fixed beam combination of N antenna groupsRF(phi) are the same as each other,
Figure GDA0001966889090000347
different.
And when the determined multiplexing pattern type shows that the multiplexing type is the third type of multiplexing mode, the demodulation reference signal patterns are different in a data transmission unit without the measurement reference symbol and a transmission unit with the measurement reference symbol.
According to the technical scheme provided by the invention, the measurement reference symbols and the data symbols are transmitted and received according to the determined multiplexing pattern types of the measurement reference symbols and the data symbols. Specifically, when the data beam direction and the measurement beam direction of one radio frequency link are different, the measurement reference symbol and the data symbol are sent in a time-division manner, or the measurement signal is not sent, or the data signal is not sent, and when the data beam direction and the measurement beam direction of one radio frequency link are the same, the measurement reference symbol and the data symbol are sent in a time-division manner or in a frequency-division manner. By the technical scheme provided by the invention, the problem of conflict between the measurement beam and the data beam on the requirements of limited radio frequency link radio frequency beam directions is solved. Particularly, when the determined multiplexing pattern types of the measurement reference symbols and the data symbols are displayed as time division multiplexing, the problem of conflict between the measurement beams and the data beams to the requirement of the limited radio frequency link radio frequency beam direction is effectively avoided.
The process of the present invention is described in detail below with reference to specific examples.
Fig. 2 is a diagram of a mixed beamforming communication model, as shown in fig. 2, a transmitting end has N rf links, each rf link is connected to M transmitting arrays, and an nth rf link performs rf beamforming on a signal from a digital baseband, i.e., multiplying the signal by Wn＝[wn1 wn2 … wnM]TAnd then, the M antenna elements connected with the nth radio frequency link are transmitted. In the embodiment of the invention, the sending end is assumed to be from the digital baseband signal to each transmitterThe signals of the frequency link are time domain signals, that is, the sequences S1, S2, … SN in fig. 2 are time domain signals, and at this time, each rf beam is shaped to the time domain signals, which is equivalent to the full bandwidth signal having the rf beam shaped, that is, only one rf beam can be generated on one OFDM symbol by one rf link, in one measurement period, multiple rf beams of one rf link need to be measured, and one or multiple rf beams need to be transmitted on one or multiple 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.
Example 1
In embodiment 1, one sounding reference symbol is an OFDM symbol, and the multiplexing scheme of the sounding reference symbol and the data symbol is a first type of multiplexing scheme, that is, in all transmission units having a sounding beam to transmit, all the sounding reference symbols and data symbols of all antenna groups are time division multiplexed. The time domain relation pattern of P measurement reference symbols and data symbols in one measurement period has LpatternA set, in which there is no data symbol between P measurement reference symbols in the same pattern; the duration of the P sounding reference symbols or the duration of the P sounding reference symbols and the duration of one short data symbol is equal to the duration of one long data symbol.
As shown in fig. 3 to 6, a transmission time unit forms a long data symbol (D-OFDM), i.e. a data symbol aligned with a plurality of sounding reference symbols, by 14 OFDM symbols with the same duration, where the duration of each OFDM symbol is: t isData＝TCP,Data+T1,DataOnly one or 2 OFDM symbols are referred to as special OFDM, which is called region S, and hereinafter referred to as S-OFDM for short. FIG. 3 is a schematic diagram of a first embodiment of a time domain relationship pattern of a sounding reference signal and a data symbol according to the present invention, wherein a region S is a 3 rd D-OFDM symbol; FIG. 4 is a diagram illustrating a second embodiment of a time domain relationship pattern for a sounding reference signal and a data symbol according to the present invention, wherein the region S is the 9 th D-OFDM symbol; FIG. 5 is a third embodiment of the present invention for measuring the time domain relationship pattern of the reference signal and the data symbolThe example is shown in the figure, wherein, the region S is the 10 th D-OFDM symbol; FIG. 6 is a diagram illustrating a fourth embodiment of measuring a time domain relationship pattern of a reference signal and a data symbol according to the present invention, wherein the region S is formed by two D-OFDM symbols from 9 th to 10 th.
Further, the area S is divided into a measurement reference area (S-CSI) and a Data area (S-Data), wherein the measurement reference area comprises P time-division measurement reference symbols; a slot (GP) region is included between the measurement reference region and the data region, or the GP region exists between P measurement reference symbols of the S-CSI and the GP region exists between the measurement reference region and the data region. The GP field is a guard interval, during which no useful signal is supposed to be transmitted, and the presence of the GP field is intended to complete a D-OFDM field under a preferred characteristic design. At the same time, these GP fields also provide change times for the changes in the rf weighting vectors. Wherein,
the P value is derived in one or more of the following ways: obtained through high-level signaling; and/or by dynamic signaling; and/or by other information.
Here, obtaining by other information includes:
Figure GDA0001966889090000361
wherein Btotal, Q are all positive integers, Btotal represents the total number of beams that need to be transmitted and scanned for currently completing one beam scanning measurement, and Q represents the number of beams transmitted on one measurement symbol.
The sum of the duration of P measurement reference symbols (S-CSI-OFDM for region S) and the duration of Data OFDM symbols (S-Data-OFDM for region S) and the duration of GP length equals the duration of one D-OFDM symbol, the duration of OFDM including CP length.
In the patterns shown in fig. 3 to 6, the constitution of P S-CSI-OFDM symbols and one S-Data-OFDM, and the GP domain constitution are shown in fig. 7 to 11. Fig. 7 corresponds to the S-OFDM configuration when P is 1, fig. 8 corresponds to the S-OFDM configuration when P is 2, fig. 9 corresponds to the S-OFDM configuration when P is 4, and fig. 10 and fig. 11 correspond to the two configurations of S-OFDM when P is 8, respectively. Wherein S-OFDM is a term used herein to distinguish symbols from a special OFDM symbol, i.e., a plurality of sounding reference symbols, or from D-OFDM occupied by a plurality of sounding reference symbols and data symbols.
In example 1, assume TCP,Data＝MT1,DataIn example 1
Figure GDA0001966889090000362
For example simplicity only, reference is also made to existing LTE design rules, and other values of M are not excluded. Assuming that the number of frequency domain subcarriers corresponding to the minimum unit of resource allocation is N, the measurement reference OFDM of the measurement reference region ensures that the subcarrier interval is
Figure GDA0001966889090000371
Wherein L is a positive integer satisfying 0<L is less than or equal to N, and delta f is the subcarrier interval of the D-OFDM symbol. Further, the air conditioner is provided with a fan,
Figure GDA0001966889090000372
wherein X is the number of frequency domain data subcarriers corresponding to the minimum CSI feedback unit, and CSI feedback is obtained based on the measurement reference signal, preferably
Figure GDA0001966889090000373
Is a positive integer. At the same time, it is necessary to satisfy that the S-Data region constitutes one S-Data-OFDM symbol, and
Figure GDA0001966889090000374
wherein K is a positive integer satisfying 0<K.ltoreq.N, preferably,
Figure GDA0001966889090000375
is a positive integer.
In embodiment 1, for simplicity of description, in the existing LTE, it is assumed that Δ f is 15kHz, N is 12, L is 1, and X is 12, that is, a frequency-domain wideband on one PRB resource in which a subcarrier interval of an S-CSI region is equal to a D-OFDM region. That is, compatible with existing LTE, there is one sounding reference resource corresponding to one PRB resource, so:
c of OFDM symbol based on 1) S-CSI domainThe length of P and the length of CP of the symbol in the S-Data-OFDM domain are equal to the length of CP in the D-OFDM domain; 2)
Figure GDA0001966889090000376
is a positive integer; 3)
Figure GDA0001966889090000377
is a positive integer; 4) the four preferable characteristics that the OFDM time length of each measurement in the S-CSI domain is the same are obtained, and the parameters of the S-OFDM shown in the table 1 are obtained:
Figure GDA0001966889090000378
Figure GDA0001966889090000381
TABLE 1
At this time, the transmitting end and the receiving end may establish the measurement pilot configuration as shown in table 2, and the blank entries in table 2 indicate that there is no such configuration.
Figure GDA0001966889090000382
TABLE 2
In another implementation of example 1, the S-OFDM domain may be designed based on the parameters shown in Table 3.
Figure GDA0001966889090000383
Figure GDA0001966889090000391
TABLE 3
At this time, the transmitting end and the receiving end can establish a measurement pilot configuration as shown in table 4,
pilot pattern index P＝1 P＝2 P＝4 P＝8
0 (as in fig. 3) FIG. 7 FIG. 8 FIG. 9 FIG. 10 shows a schematic view of a
1 (as in figure 4) FIG. 7 FIG. 8 FIG. 9 FIG. 10 shows a schematic view of a
2 (as in fig. 5) FIG. 7 FIG. 8 FIG. 9 FIG. 10 shows a schematic view of a
TABLE 4
In another embodiment of embodiment 1, GP is inserted between each OFDM symbol in S-OFDM domain, and fig. 7 to 11 are respectively changed to fig. 12 to 16. At this time, one GP in FIGS. 7 to 11 is equally divided into corresponding (p +1) GPs inserted between the respective different OFDM symbols of the S-OFDM region, which include OFDM of the S-CSI region and OFDM of the S-Data-OFDM region. In this case, table 2 is changed to table 5, and table 4 is changed to table 6.
Figure GDA0001966889090000392
TABLE 5
Figure GDA0001966889090000393
TABLE 6
In the above practical implementation, since N is 12, there is the same problem as that of the non-integer sampling point existing in the existing sampling point, which is not favorable for system implementation. Therefore, there is a need to increase the sampling rate, such as 30.72 x 12MHz, or 30.72 x 24 MHz.
It should be noted that, in the first embodiment, in fig. 3 to 5, the 3 rd, 9 th and 10 th OFDM of D-OFDM are respectively used as the region S, taking the existing LTE as an example, in other system designs, such as a high frequency system design, the OFDM in the D-OFDM domain that can be used as the region S may be used as long as it satisfies that no special signal is transmitted in the current transmission cycle. Wherein the special signal at least comprises one or more of the following signals: broadcast signals, and/or demodulation pilot signals, and/or synchronization signals, and/or other measurement reference signals such as CRS, etc. In the first embodiment, Δ f is assumed to be 15kHz for convenience of description, but the subcarrier spacing of the D-OFDM domain is not excluded.
Example 2
In embodiment 2, one sounding reference symbol is an OFDM symbol, and the sounding reference symbol and the data symbol are multiplexed in such a way that all the sounding reference symbols and the data symbols of all antenna groups are time division multiplexed in all transmission units having a sounding beam to transmit. In this embodiment, assume that N is 2m＝M2m1Wherein 2 ism1Sub-carriers contained in a minimum unit representing corresponding resource scheduling of a D-OFDM regionNumber, taking the current LTE as example 2m1I.e. the number of subcarriers contained in one PRB.
At this time, the region S contains only P measurement reference OFDM symbols and one S-Data-OFDM symbol of the S-CSI region, without the GP region. For simplicity of description, the second embodiment assumes that M is 1,2m116, then:
based on 1) the CP length of the OFDM symbols of the S-CSI domain and the CP length of the symbols of the S-Data-OFDM domain are both larger than or equal to the CP length of the D-OFDM domain; 2)
Figure GDA0001966889090000401
is a positive integer; 3)
Figure GDA0001966889090000402
is a positive integer; 4) the four preferable characteristics that the measured OFDM time length of the S-CSI domain is the same are established, and the parameters of the S-OFDM shown in the table 7 are as follows:
Figure GDA0001966889090000403
Figure GDA0001966889090000411
TABLE 7
In the CP length of the S-CSI field corresponding to the option of P-8 shown in table 7, the CP time length of the first 7 measurement reference symbols S-CSI-OFDM is 146Ts1, and the CP time length of the 8 th measurement reference symbol S-CSI-OFDM is 145Ts 1. At this time, the transmitting end and the receiving end may establish a measurement pilot configuration as shown in table 8, and the blank entries in table 8 indicate that there is no such configuration.
Figure GDA0001966889090000412
TABLE 8
In another implementation of example 2, assume 2m116, N-2 x 16-32, which may be based on the preferred features of 1) to 4) aboveThe parameters of the region S domain shown in table 9 are obtained.
Figure GDA0001966889090000413
Figure GDA0001966889090000421
TABLE 9
As shown in table 9, in P ═ 4, the CP length of the first 2S-CSI-OFDM symbols in the S-CSI region is 183Ts1, and the CP length of the remaining 2S-CSI-OFDM symbols is 182Ts 1; in P-8, the CP length of the first 2S-CSI-OFDM symbols of the S-CSI region is 159Ts1, and the CP length of the remaining 2S-CSI-OFDM symbols is 158Ts 1. At this time, the transmitting end and the receiving end may establish a measurement pilot configuration as shown in table 10.
Figure GDA0001966889090000422
Watch 10
In yet another implementation of embodiment 2, there is only one pilot pattern, i.e., P S-CSI-OFDM symbols and one S-Data-OFDM symbol of region S are inserted between 13D-OFDM symbols, as shown in fig. 22-24. Preferably, the sum of the durations of P S-CSI-OFDM symbols and one S-Data-OFDM symbol is still satisfied as the duration of one D-OFDM symbol, in which case the various OFDM symbol durations include their CP lengths. The transmitting end and the receiving end may establish a measurement pilot configuration as shown in table 11, and a blank entry in table 11 indicates that there is no such configuration.
Figure GDA0001966889090000431
TABLE 11
The positions where P S-CSI-OFDM symbols and one S-Data-OFDM symbol are inserted at various P values in embodiment 2 are only an example and are not intended to limit the insertionThe method of (1). Also, this embodiment does not exclude equally dividing a region S into P1One S-CSI-OFDM-Pre symbol, wherein P1Obtaining the maximum number of S-CSI-OFDM-Pre symbols which can be equally divided in one area S according to the four preferred characteristics of 1) to 4) in the embodiment, and then adding P1The S-CSI-OFDM-Pre symbols are evenly inserted between the D-OFDM. Thus, when in actual calling, the first P S-CSI-OFDM-Pres are selected as the measured S-CSI-OFDM symbols according to different P values, and the rest P1The P OFDM symbols may be used for transmission of data or assume a transmission power of 0. Therefore, the CSI areas of the cells are aligned, and the mutual interference between the inter-cell CSI measurement signals and the Data is controlled.
Example 3
In embodiment 3, the sounding reference signal is transmitted periodically and/or aperiodically.
When the sounding reference signal is transmitted periodically, the 1 st or 1 st to 2 nd subframes in each period satisfy one of the subframe structures shown in fig. 3 to 6 in embodiment 1 and embodiment 2, and no sounding reference signal is transmitted in other subframes.
When the aperiodic indication signaling indicates that the current subframe has the transmission of the sounding reference signal, the subframe structures of the embodiment 1 and the embodiment 2 exist in the subframe structure of the current subframe, and no sounding reference signal is transmitted in other subframes.
As shown in fig. 25, in this case, in one measurement period, only the frame structure of the 1 st subframe, i.e., subframe 0, satisfies any one of embodiment 1 or embodiment 2, and no measurement signal is transmitted in other subframe structures, which are different from subframe 0. As shown in fig. 25, in D-OFDM3 in a subframe with a sounding reference signal, the P value remains unchanged and the subframe structure remains unchanged in different sounding periods unless a new P value and pattern indication is notified.
If there is no subframe with periodic sounding reference signal in a sounding period, there is signaling indicating that aperiodic sounding reference signal needs to be transmitted, then its subframe structure needs to send aperiodic sounding reference signal on subframe based on configured pattern.
Example 4
In embodiments 1 to 3, the time domain pattern relationship between P measurement reference signals in the S-CSI domain and S-Data-OFDM, D-OFDM, and the periodic and aperiodic transmission modes of the measurement reference signals are given. In this embodiment, a specific transmission method of one measurement reference signal will be described.
In embodiment 4, one sounding reference signal is one OFDM symbol, and the full bandwidth is shared under the current system bandwidth
Figure GDA0001966889090000441
The measurement reference signal regions, that is, time-frequency resource grids (REs) (may be abbreviated as S-CSI-OFDM-REs) on one S-CSI-OFDM symbol, may send only one port signal on the same time-frequency resource, where the port may correspond to one beam of one radio frequency link or to a result of N baseband beam forming and radio frequency beam forming hybrid beam forming.
The signal of the port j is sent as follows:
first, a random sequence as shown in formula (1) is randomly generated:
Figure GDA0001966889090000442
in formula (1), a constant l represents an OFDM symbol index in one subframe; n issRepresenting a subframe index; c (m) is a sequence of m with initialization values generated as a function of:
Figure GDA0001966889090000443
the generation function of the m-sequence is initialized once at each OFDM start, where
Figure GDA0001966889090000444
Is the virtual cell number of the SRS, P is the index of P SRS in an S domain, NCPIs the CP Length index, NCPBelonging to {0,1 }.
Then, on port j corresponding to the mth S-CSI-OFDM-RE, the measurement baseband precoding is as shown in formula (2):
Figure GDA0001966889090000445
in the formula (2), the first and second groups,
Figure GDA0001966889090000446
and indicating the baseband precoding weight value of the port j corresponding to the ith radio frequency link on the mth S-CSI-OFDM-RE. In this embodiment, it is assumed that each S-CSI-OFDM-RE has only one port for signaling, but the weighting values of equation (2) may be different on different S-CSI-OFDM-REs.
If the weighted values are different, the same port corresponds to different mixed beam results at different S-CSI-OFDM-REs. Thus, the baseband frequency domain signal sequence on the ith radio frequency link is as shown in equation (3):
Figure GDA0001966889090000451
then, for yi(m) the time domain Fy sequence obtained by performing IFFT on the sequence is as shown in formula (4):
Figure GDA0001966889090000452
adding CP to form the i-th rf link baseband output Si sequence shown in fig. 2 is shown in equation (5):
Figure GDA0001966889090000453
finally, the equivalent baseband signal transmitted by the ij antenna element shown in fig. 2 connected to the ith rf link is shown in equation (6):
Figure GDA0001966889090000454
and (3) performing radio frequency processing on the equivalent baseband signal obtained by the formula (6), for example, processing such as adding carrier frequency, and then sending out.
At this time, on different S-CSI-OFDM-RE resources, the corresponding ports for measuring reference signals are the same, but the corresponding mixed beams are different. Different mixed beams corresponding to different components in the same radio frequency link beam combination on different S-CSI-OFDM-RE resources after being subjected to baseband beam weighting adjustment, namely, a mixed beam pattern corresponding to a port j on one S-CSI-OFDM-RE resource is shown as a formula (7):
Figure GDA0001966889090000455
however, on one S-CSI-OFDM-RE resource, only the sounding reference signal of one port can be transmitted, except that the port reference signals on the plurality of S-CSI-OFDM-RE resources are not code division multiplexed at this time, and the sounding reference signals corresponding to the M ports are transmitted at most on the M S-CSI-OFDM-RE resources subjected to code division multiplexing. Furthermore, the frequency domain width occupied by the multiplexed M measurement reference signals should be less than or equal to the frequency domain width of a Precoding Resource block group (PRG).
In an implementation manner of embodiment 4, assuming that the target directions of the radio frequency beams corresponding to the radio frequency links are different, as shown in fig. 26, the S-CSI-OFDM-RE resources pass through Wj，m，BBAdjustment of the baseband precoding vectors into a hybrid beam, assuming Wj，m，BBIs a column vector with only one element being not 0 and the other elements being 0, and each S-CSI-OFDM-RE corresponds to one of the 4 beams in fig. 26, as shown in fig. 27, and the 0 rd to 3 rd S-CSI-OFDM-REs correspond to the beams [4, 2, 3, 1 ] in fig. 26 in sequence, as an example]. That is, based on the measurement reference signal on one transmission port j on the S-CSI-OFDM-RE, the channel quality from one radio frequency beam to the receiving end in one of the N radio frequency links can be obtained. Such as: in fig. 27, the receiving end can obtain the 4 th transmission based on the received signal on the 0 th S-CSI-OFDM-RE and the sounding reference signal on the port jThe channel quality at the receiving end when the frequency link transmits the beam direction as shown by beam 4.
In another implementation manner of embodiment 4, assuming that the target directions of the rf beams corresponding to the rf links are the same, at this time, different narrow beams in the rf wide beam direction may be formed through precoding adjustment of the baseband, as shown in fig. 27, at this time, through beam adjustment of the rf links, each S-CSI-OFDM-RE may correspond to different narrow beams in the rf wide beam.
Example 5
In embodiment 5, a sounding reference symbol is transmitted based on a single carrier, and at this time, the subframe pattern and the structure of each region S are the same as those in the first and second embodiments, except that one S-CSI-OFDM is changed to a single carrier signal, which is called an S-CSI-time sequence, and the time-domain length and the time duration of the S-CSI-time sequence in this embodiment are changed. The receiving end obtains a time domain tap by correlating the single carrier reference symbol, and then Fast Fourier Transform (FFT) is carried out on the time domain tap to obtain the frequency domain channel correspondence.
In this embodiment, the length of one S-CSI-TimeSequence needs to consider the following preferred characteristics:
1)TS-CSI-TimeSeauence≤TD-Data；
2) one S-CSI-TimeSequence is divided into two domains, wherein the first domain transmits a time domain measurement reference signal sequence TS-CSI-TimeSequence，1The second domain is a protection domain TS-CSI-TimeSequence，2The duration of the protection field is greater than or equal to TDelayI.e. TS-CsI-TimeSequence，2≥TDelayWherein, TDelayRepresenting the maximum multipath delay, the signal power in the guard domain is 0. In particular, the GP domain in fig. 12 to 17 is TS-CSI-TimeSequence，2The domain, and the S-CSI-OFDM domain in this embodiment is TS-CSI-TimeSequence，1。
3)
Figure GDA0001966889090000471
Wherein L, N are all positive integers. IntoIn one step, N is an integer multiple of the number of subcarriers contained in the minimum resource allocation unit for data transmission, 0<L is less than or equal to N. Wherein, T1,D-DataA time domain length of one D-OFDM after removing the CP length;
4) the measurement reference signals corresponding to a plurality of ports can be simultaneously sent on one S-CSI-TimeSequence symbol, different measurement reference signals are different mixed beams after weighting adjustment is carried out on different baseband beams of a beam combination of the same radio frequency link group, and the corresponding mixed beams of the same port on the full system bandwidth occupied by the current S-CSI-TimeSequence symbol are the same.
The orthogonality characteristics need to be satisfied between the sounding reference signal sequences corresponding to multiple ports simultaneously transmitted on the same S-CSI-TimeSequence symbol:
Figure GDA0001966889090000472
wherein,
Figure GDA0001966889090000473
is the measurement reference signal sequence of the jth port.
The measurement reference signal sequence corresponding to the same port needs to satisfy the following characteristics:
Figure GDA0001966889090000474
wherein M is 1, … M,
Figure GDA0001966889090000475
under the above conditions shown in this embodiment, the signaling procedure of an S-CSI-TimeSequence is as follows:
firstly, forming a baseband signal of each radio frequency link corresponding to a time domain:
Figure GDA0001966889090000476
wherein,
Figure GDA0001966889090000477
and indicating the baseband precoding weight of the ith radio frequency link corresponding to the first porti measurement port.
Then, after the baseband signal on each rf link is multiplied by the rf adjustment amount of the M antenna elements connected to the rf link, the equivalent baseband transmission signal on the ijth antenna array connected to the ith rf link is as follows: y1ij(m)＝wijSi (m), m ═ 0,1, … SL-1, where wijIndicating the rf beam adjustment scalar corresponding to the ijth antenna element connected to the ith rf link. The signal is processed by radio frequency, for example, a carrier frequency is added, and then the processed signal is transmitted.
In another implementation manner of the embodiment 5, in this embodiment, the length of the guard field in the above-mentioned preferred feature 2) is 0, that is, only the first field, i.e., the beam reference signal sequence field.
Example 6
In embodiment 6, the multiplexing scheme of the measurement reference symbols and the data symbols is a sixth multiplexing scheme, that is, in all transmission units having measurement beams to be transmitted, a time division scheme is used for part of the measurement reference symbols and the data symbols, and a frequency division scheme is used for part of the measurement reference symbols and the data symbols. Further, the multiplex subframe pattern may vary in different transmission units with sounding reference symbols.
In embodiment 6, it is assumed that there are three subframe patterns, as shown in fig. 30 to 32, in which measurement reference signals and data signals in OFDM indicated by hatching with oblique lines are transmitted by a time division method, and measurement reference signals and data signals in OFDM indicated by hatching with horizontal bars are transmitted by a frequency division method. As shown in fig. 33, where C0 represents the sub-carrier position occupied by one measurement reference symbol, the sub-carrier position in OFDM is only an example and is not used to limit the position, that is, other sub-carrier positions are not excluded. In fig. 30 to 32, hatching indicates that the measurement reference signal and the data signal are transmitted in a time division manner, and the pattern thereof may be one of fig. 7 to 10, or one of fig. 12 to 15; or one of fig. 17 to 20. At this time, the sum of the durations of the measurement reference signals, or the sum of the durations of the measurement reference signals and the short data is equal to the duration of the long data.
The receiving end may determine the specific subframe pattern in the beam measurement transmission unit by one or more of the following manners:
the first method is as follows: obtained from high level signaling;
the second method comprises the following steps: obtained by DCI signaling;
the third method comprises the following steps: comparing the beam ID of the reference signal of the PDCCH which is successfully demodulated with the measuring beam ID which needs to be sent in the transmission unit, wherein if the two beam IDs belong to the same beam direction set of one antenna group, the measuring beam direction is the same as the data beam direction; the measurement reference symbols and the data symbols of the antenna groups with the same beam direction adopt a frequency division multiplexing mode, the measurement reference symbols and the data symbols of the antenna groups with the same beam direction adopt a time division multiplexing mode, and the sending sequence of the measurement reference signals of each antenna group is pre-agreed by sending and receiving double-sending. It should be noted that, it is assumed here that the receiving end is able to know the beam ID and can obtain the beam direction set corresponding to each antenna group for each beam ID, because the beam is a mixed beam, and multiple mixed beams correspond to one beam direction in one antenna group.
And judging the multiplexing mode of the measurement reference symbols and the data symbols in the current measurement reference signal transmission subframe according to a certain criterion by comparing whether the beam directions are the same or not. Where the criteria are fixed or signaled through higher layer signaling.
The method is as follows: and comparing the beam ID of the reference signal of the demodulated PDSCH of the antenna group with the measurement beam ID of the antenna group, wherein when the two beam IDs belong to the same beam direction set of the antenna group, the measurement beam direction is the same as the data beam direction. It should be noted that, it is assumed here 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 a set of beam IDs corresponding to different directions of each antenna group, because the beam is a mixed beam, and multiple mixed beams correspond to one beam direction in one antenna group. And judging the multiplexing mode of the measurement reference symbols and the data symbols in the current measurement reference signal transmission subframe according to a certain criterion by comparing whether the beam directions are the same or not. Wherein, the criterion is fixed or notified by high-level signaling;
in the third and fourth modes, the criterion for determining the subframe pattern according to whether the beam directions are the same may include:
in the transmission unit, in S OFDM symbols with measurement reference signals in patterns sent by the measurement reference symbols and the data symbols in a frequency division mode, at least one OFDM symbol has at least one measurement beam with different directions from the data beam of an antenna group, and then the measurement reference symbols and the data symbols of all the antenna groups in the transmission unit are sent in a time division mode;
in a transmission unit, in S OFDM symbols with measurement reference signals in a pattern sent by a measurement reference symbol and a data symbol in a frequency division mode, only on OFDM symbols with at least one antenna group and different measurement beam and data beam directions, and sending the beam measurement symbols and the data symbols of all the antenna groups on the OFDM in a time division mode; on the OFDM symbol with the same measuring beam and data beam directions, a measuring reference symbol and a data symbol are sent in a time division or frequency division mode;
in a transmission unit, in S OFDM symbols with measurement reference signals in a pattern transmitted by a measurement reference symbol and a data symbol in a frequency division mode, the measurement reference symbol and the data symbol of an antenna group with different measurement beam and data beam directions on the OFDM symbol are transmitted in a time division mode only on the OFDM symbol with at least one antenna group with different measurement beam and data beam directions, and the measurement reference symbol and the data symbol of the antenna group with the same measurement beam and data beam directions on the OFDM symbol are transmitted in a time division or frequency division mode; and on the OFDM symbols with the same measuring beam and data beam directions, all the measuring reference symbols and data symbols on the OFDM symbols are transmitted in a time division or frequency division mode.
The fifth mode is as follows: and comparing the beam ID of the common reference symbol of the antenna group with the measurement beam ID of the antenna group, wherein when the two beam IDs belong to the same beam direction set of the antenna group, the measurement beam direction is the same as the data beam direction. It should be noted that, it is assumed here 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 a set of beam IDs corresponding to different directions of each antenna group, because the beams are mixed beams, and multiple mixed beams correspond to one beam direction in one antenna group. And judging the multiplexing mode of the measurement reference symbols and the data symbols in the current measurement reference signal transmission subframe according to a certain criterion by comparing whether the beam directions are the same or not. Wherein, the criterion can be fixed preset or informed by high-layer signaling;
when any one of the three-mode and the five-mode is adopted and the first mode is combined for notification, the three-mode and the five-mode are superior to the first mode, namely if one transmission unit is provided, two modes can be used, and the mode of the three-mode and the five-mode is taken as the standard.
Example 7
In embodiment 7, in different transmission units with sounding reference symbols, the sounding reference symbols and the data symbols have different multiplexing categories, and the different multiplexing categories are obtained through signaling or time domain parameters where the transmission units are located.
As shown in fig. 34, the subframe occupied by the sounding reference symbol is fixed in position in different sounding periods, except that the multiplexing categories of the sounding reference symbol and the data symbol may be different, and the different multiplexing categories need to be signaled.
In embodiment 7, the signaling may be one of:
and (4) high-layer signaling. At the moment, the change period of the multiplexing type can be longer, and notification is not needed in each measurement period; or,
and dynamic signaling. At this time, the change of the multiplexing type can be notified by each subframe of the measurement reference symbol, and further each subframe can be different; or,
high layer signaling + dynamic signaling. At this time, the higher layer signals the category subset, wherein the category subset belongs to the specific category of the set dynamic signaling formed by the six categories.
The multiplexing categories are notified according to the time domain parameters of the transmission units, as shown in fig. 34, and at this time, the multiplexing categories are calculated according to the system frame numbers of the transmission units, where one embodiment is that all multiplexing categories or a subset of the multiplexing categories are used in turn in different measurement periods, and another embodiment is that all multiplexing categories or a subset of the multiplexing categories are used in different intra-wheel flows of the transmission units with different measurement reference symbols.
It should be noted that this embodiment also does not exclude implementations in which the subframe indexes occupied by the measurement reference symbols are different in different measurement periods.
Example 8
In embodiment 8, when the multiplexing mode of the data symbols and the sounding reference symbols in the transmission unit is the third type of multiplexing mode, that is, all the sounding reference symbols and the data symbols are frequency division multiplexed; and all demodulation reference signal ports occupy RE on OFDM with measurement reference symbols, different OFDM occupied by the measurement reference symbols or OFDM with the measurement reference symbols and OFDM without the measurement reference symbols, and different demodulation reference signal ports can only be subjected to code division multiplexing in a frequency domain if code division multiplexing is carried out.
In this embodiment, each demodulation reference signal port occupies REs on all the OFDM symbols with the sounding reference symbol, and occupies REs on at least one data OFDM symbol without the sounding reference symbol.
Taking the subframe structure of the conventional LTE as an example, as shown in fig. 35(a) to 35(f), the subframe structure is a physical resource block, and includes 14 OFDM symbols, 12 subcarriers, the first 7 OFDM symbols are referred to as even slots, and the last 7 OFDM symbols are referred to as odd slots. On different OFDM symbols, different beam measurement ports such as CSI1 and CSI2 ports in the figure do not perform time-domain code division multiplexing, that is, CSI1 only occupies one RE on the 5 th OFDM of the even slot, and CSI2 only occupies one RE on the 6 th OFDM of the even slot; time-domain code division multiplexing is not performed between the CSI3 and the CSI4, that is, the CSI3 occupies only one RE on the 5 th OFDM of the odd slot, and the CSI4 occupies only one RE on the 6 th OFDM of the odd slot. One demodulation reference signal port occupies REs on all OFDM occupied by CSI-RS, which does not perform time domain spreading between different OFDM symbols REs occupied by CSI-RS. Such as: the DMRS1 and the DMRS2 occupy REs on OFDM occupied by CSI1 to CSI4, and occupy at least one RE on an OFDM symbol without a measurement reference symbol, such as the 4 th OFDM symbol of even and odd slots. At this time, the channel estimation result obtained by the DMRS on the 5 th and 6 th OFDM symbols (i.e., OFDM with CSI-RS) of the even slot and the odd slot of the same demodulation reference signal port, such as DMRS1 or DMRS2, can only be used for demodulation of the OFDM symbol where the same demodulation reference signal port is located, and cannot be used for demodulation of other OFDM through time domain interpolation, and the channel estimation result obtained by the DMRS on the 4 th OFDM symbol of the even slot and the odd slot can be used for data demodulation of other OFDM symbols, such as OFDM symbols without PDCCH in the 0 th to 3 th OFDM of the even slot and the 0 th to 3 rd OFDM symbols of the odd slot.
Specifically, fig. 35(a) to 35(f) are diagrams of different demodulation reference signals satisfying the above constraint. In fig. 35(a), different demodulation reference signal ports are frequency division multiplexed. In fig. 35(b), different demodulation reference signal ports are frequency division multiplexed on OFDM symbols with CSI-RS, and time division multiplexed on OFDM symbols without CSI-RS. In fig. 35(c), different demodulation reference signal ports are frequency domain code division multiplexed. In fig. 35(d), frequency domain code division multiplexing is also used for different demodulation reference signal ports, only to reduce the density of demodulation reference signal ports in the frequency domain. In fig. 35(e), different demodulation reference signal ports are frequency division and/or frequency domain code division multiplexed. Except that the demodulated signal ports occupy adjacent subcarriers in the frequency domain. In fig. 35(f), different demodulation reference signal ports are frequency division and/or frequency domain code division multiplexed, but the demodulation reference signal density is increased relative to that in fig. 35 (e).
In summary, as shown in fig. 35(a) to 35(f), for example, in the same demodulation reference signal port, such as the demodulation reference signal port 1 or the demodulation reference signal port 2, time-domain interpolation cannot be performed between channel estimation values obtained by 4 total OFDM on even slots and 5 th to 6 th OFDM in odd slots, and time-domain interpolation cannot be performed between a channel estimation value obtained by 4 th OFDM in even slots or 4 th OFDM in odd slots and channel estimation values obtained by 4 total OFDM in 5 th to 6 th OFDM in even slots and odd slots; the channel value on OFDM without the sounding reference symbol and without the demodulation reference signal can only be obtained by performing time domain interpolation on the estimated value obtained by the demodulation reference signal without the sounding reference symbol.
In this embodiment, one demodulation reference port occupies REs in OFDM with sounding reference symbols, and even if there is no sounding reference symbol in OFDM on the PRB in which the demodulation reference port is located, there is at least one sounding reference symbol in OFDM in the same subframe, and at this time, it is considered that there is a sounding reference symbol in OFDM, and the demodulation reference port needs to occupy REs in OFDM.
Thus, the radio frequency beam combination 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, so as to solve the collision problem. Allowing the rf beams to be different between different OFDM symbols where different sounding reference symbols are located can be achieved by completing scanning of multiple rf beams within one transmission unit.
Example 9
In the 9 th embodiment, one measurement reference symbol port is transmitted on only 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, but not in the time domain.
As shown in fig. 36, when the sounding reference symbols and the data symbols are time division multiplexed, that is, there are four sounding reference symbols C0-C3, and one beam sounding reference port, for example, CSI0, is transmitted only on C0, and does not occupy resources in other sounding reference symbols, for example, no CSI0 signal transmission on C1-C3, different beam sounding reference ports may be frequency division multiplexed on the same sounding reference symbol, for example, on C0, or code division multiplexed on C0. At this time, different mrfs cannot be code-multiplexed in the time domain at different mrfs, that is, different mrfs cannot be spread in the time domain of different mrfs, for example, CSI3 and CSI4 cannot be spread in any two, or any three, or four of C0 to C3, and cannot achieve code-division multiplexing in the time domain. This allows the beam combinations of the radio antenna groups on different measurement reference symbols to be different.
10 th embodiment
In this embodiment, the sounding reference symbol is at the last bit of a transmission cell in which there are no data symbols after the sounding reference symbol.
As shown in fig. 39, the time-division multiplexed sounding reference symbols C0-C4 are at the end of a transmission unit, the number of sounding reference symbols included in a subframe (i.e. a transmission unit) in the diagram is only an example, and a short data symbol in the diagram is also an example and is not used to limit the protection scope of the present invention, and the short data symbol is not included in other embodiments of the present embodiment, as shown in fig. 40.
In another implementation manner of this embodiment, all symbols including the sounding reference symbol are at the last bit of one transmission unit, and include time division multiplexing sounding reference symbols and frequency division multiplexing OFDM symbols, as shown in fig. 41, the number of frequency division multiplexing OFDM symbols and the number of time division multiplexing beam sounding reference symbols in fig. 41 are also only examples, and are not used to limit the protection scope of the present invention, and may all be frequency division multiplexing OFDM symbols, or may not have short data symbols.
By means of the processing in the embodiment of the invention, the radio frequency beam is not changed in the data transmission phase, and the radio frequency beam is changed at the end of the subframe.
Fig. 37 is a schematic diagram of a structure of an apparatus for implementing measurement reference symbol transmission according to the present invention, and as shown in fig. 37, the apparatus is disposed in a transmitting end, and includes at least a first determining unit and a first processing unit; wherein,
a first determining unit, configured to determine, in a transmission unit where a sounding reference symbol needs to be sent, a multiplexing pattern type of the sounding reference symbol and a data symbol;
and the first processing unit is used for sending the measurement reference symbols and the data symbols according to the determined multiplexing pattern type.
The first determining unit is specifically configured to: appointing a multiplexing pattern type in advance; or, a group of multiplexing pattern classes which are invisibly informed according to the relevant time domain parameters of the transmission unit; or, determining a multiplexing pattern type according to a result of whether the directions of the data beam to be transmitted and the radio frequency beam corresponding to the measuring beam conflict with each other, and notifying the multiplexing pattern type to the receiving end through signaling.
The first processing module is specifically configured to: the time domains of the measurement reference symbol and the data symbol are not overlapped, and the frequency domains are completely overlapped; 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.
For the transmitting end, the multiplexing pattern categories of the sounding 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 the demodulation reference signal is only on the data symbols;
and/or, the second type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed;
and/or, the third type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; all demodulation reference signal ports occupy Resource Elements (RE) on all OFDM with the measurement reference symbols, and between the demodulation reference signal ports and different OFDM with the measurement reference symbols, or between the OFDM with the measurement reference symbols and OFDM without the measurement reference symbols, if code division multiplexing is carried out on the different demodulation reference signal ports, the different demodulation reference signal ports can only be in a frequency domain, and cannot be in time domain code division multiplexing;
and/or, a fourth type multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbol adopts a first signaling to indicate a measurement reference symbol port with the transmission power of 0 or an OFDM symbol index with the transmission power of 0 corresponding to the measurement reference symbol port;
and/or, a fifth multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; indicating the OFDM symbol index with the data symbol transmitting power of 0 by adopting a second signaling;
and/or, the sixth multiplexing mode: time division multiplexing of part of the measurement reference symbols and the data symbols, and frequency division multiplexing of part of the measurement reference symbols and the data symbols; and the demodulation reference signal is only on the OFDM of frequency division multiplexing or the OFDM without the measurement reference signal.
When the multiplexing pattern type is any one of the first multiplexing mode to the sixth multiplexing mode, the sounding reference signal corresponding to one sounding reference port is only transmitted on one frequency division multiplexing OFDM symbol, or only transmitted on one time division multiplexing sounding reference symbol.
Fig. 38 is a schematic structural diagram illustrating a component of an apparatus for implementing measurement reference symbol transmission according to the present invention, as shown in fig. 38, the apparatus is disposed in a receiving end, and at least includes a second determining unit and a second processing unit; wherein,
a second determining unit, configured to determine, in a transmission unit where a sounding reference symbol needs to be sent, a multiplexing pattern type of the sounding reference symbol and a data symbol;
and the second processing unit is used for receiving the measurement reference symbols and the data symbols according to the determined multiplexing pattern type.
Wherein,
the second determining unit is specifically configured to: appointing a multiplexing pattern type in advance; or, a group of multiplexing pattern classes which are invisibly informed according to the relevant time domain parameters of the transmission unit; or receiving the multiplexing pattern type known by signaling from the transmitting end.
The second processing module is specifically configured to: the time domains of the measurement reference symbol and the data symbol are not overlapped, and the frequency domains are completely overlapped; 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.
For the receiving end, the multiplexing pattern categories of the measurement reference symbols and the data symbols may be:
the first type of multiplexing mode: all measurement reference symbols and data symbols are time division multiplexed; the demodulation reference signal can perform time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols only on data symbols;
and/or, the second type of multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the receiving end performs time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols;
and/or, the third type of administration: all measurement reference symbols and data symbols are frequency division multiplexed; and all demodulation reference signal ports occupy RE on OFDM with the measurement reference symbols, and the different OFDM occupied by the measurement reference symbols, or between OFDM with the measurement reference symbols and OFDM without the measurement reference symbols, the different demodulation reference signal ports can only be in the frequency domain if code division multiplexing, and can not be in the time domain. At this time, the channel estimation value of the same demodulation reference signal port at the receiving end between different OFDM with the measurement reference symbol cannot be subjected to time domain interpolation, the channel estimation value of the same demodulation reference signal port between OFDM with the measurement reference symbol and OFDM without the measurement reference symbol cannot be subjected to time domain interpolation, and the channel estimation value of the same demodulation reference signal port between OFDM without the measurement reference symbol can be subjected to time domain interpolation;
and/or, a fourth type multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; the measurement reference symbol adopts a measurement reference symbol port with the first signaling indication transmission power of 0 or an OFDM symbol index with the measurement reference symbol port transmission power of 0. At this time, the channel estimation values of the same demodulation reference signal port on different OFDM symbols at the receiving end can be subjected to time domain interpolation;
and/or, a fifth multiplexing mode: all measurement reference symbols and data symbols are frequency division multiplexed; and the measurement reference symbol adopts an OFDM symbol index of which the second signaling indicates that the data symbol transmission power is 0. At this time, the channel estimation values of the same demodulation reference signal port on different OFDM symbols at the receiving end can be subjected to time domain interpolation;
and/or, the sixth multiplexing mode: time division multiplexing of part of the measurement reference symbols and the data symbols, and frequency division multiplexing of part of the measurement reference symbols and the data symbols; and the demodulation reference signal is only on OFDM of frequency division multiplexing or OFDM without measurement reference signal; the receiving end of the measurement reference symbol can perform time domain interpolation on channel estimation values obtained by the same demodulation reference signal port on different OFDM symbols.
When the multiplexing pattern type is any one of the first multiplexing mode to the sixth multiplexing mode, the sounding reference signal corresponding to one sounding reference port is only transmitted on one frequency division multiplexing OFDM symbol, or only transmitted on one time division multiplexing sounding reference symbol.
Either the transmitting side shown in fig. 37 or the receiving side shown in fig. 38:
the transmission unit which has the measurement reference symbol to be sent comprises:
the transmission unit is a transmission unit where a periodic measurement beam reference symbol notified by a high layer is located, and the measurement beam is a periodic measurement beam; or,
the transmission unit is the transmission unit where the reference symbol of the aperiodic measurement beam notified by the dynamic signaling is located, and the measurement beam is the aperiodic measurement beam.
In particular, for the first type multiplexing mode and the sixth type multiplexing mode, the transmission unit patterns satisfy the following characteristics:
one or more time-division multiplexed measurement reference symbols within the time-division multiplexed OFDM have no data symbols therebetween; and the number of the first and second groups,
the sum of the time durations of one or more time-division multiplexed measurement reference symbols is equal to the time 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 the duration of one long data symbol;
when the multiplexing pattern type is the sixth type, the numbers of the time division multiplexing OFDM and the frequency division multiplexing OFDM are fixed or different in different transmission units with the beam reference symbols, and the number of the measurement reference symbols in one time division multiplexing OFDM and the duration of the short data symbols are fixed or different;
further, the transmission unit pattern also satisfies: and carrying a beam measurement reference symbol on the short data symbol in the transmission unit in a frequency division multiplexing mode.
For a transmission unit, the time domain is equal to the time domain length corresponding to the minimum unit of resource scheduling, and the frequency domain corresponds to all system bandwidths.
In the above embodiments, the data symbols refer to all symbols except the measurement reference symbols, including the demodulation reference signal. The one symbol is a sequence of one or more signal elements.
The above description is only a preferred example of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (85)

1. A method for implementing measurement reference signal transmission, comprising:
the method comprises the steps that a sending end determines the multiplexing pattern types of a measurement reference signal and a data signal according to the relation between the wave beam of the measurement reference signal and the wave beam of the data signal;
the sending end sends at least one of a measurement reference signal and a data signal according to the determined multiplexing pattern type;
wherein the data signal comprises a signal other than the measurement reference signal.
2. The method of claim 1, the determining a multiplexing pattern class of the sounding reference signal and the data signal according to a relationship between a beam of the sounding reference signal and a beam of the data signal comprising: in case that the beam of the measurement reference signal and the beam of the data signal are identical or belong to the same beam set, the measurement reference signal and the data signal are frequency division multiplexed or time division multiplexed.
3. The method of claim 1, the determining a multiplexing pattern class of the sounding reference signal and the data signal according to a relationship between a beam of the sounding reference signal and a beam of the data signal comprising:
in the case that the beam of the measurement reference signal and the beam of the data signal are different or belong to different beam sets, the multiplexing pattern of the measurement reference signal and the data signal includes one of: the measurement reference signal and the data signal are time division multiplexed; not transmitting the measurement reference signal on the OFDM symbol where the data signal is located; and not transmitting the data signal on the OFDM symbol where the measurement reference signal is located.
4. The method of claim 3, wherein not transmitting the data signal on the OFDM symbol on which the sounding reference signal is located, comprises: and informing the measurement reference signal port with the transmission power of 0 or the OFDM symbol index with the transmission power of 0 corresponding to the measurement reference signal port through signaling information.
5. The method of claim 1, further characterized in that a sounding reference signal for one sounding reference port is transmitted on only one OFDM symbol.
6. The method of claim 1, wherein when the type of the multiplexing pattern of the sounding reference signal and the data signal is time division multiplexing, the multiplexing pattern satisfies the following characteristics:
one or more time-division multiplexed measurement reference signals have no data signal between them; and the number of the first and second groups,
the sum of the time lengths of one or more of the time-division multiplexed sounding reference signals is equal to the time length of a data signal, or the sum of the time lengths of one or more of the time-division multiplexed sounding reference signals and the time length of a short data signal is equal to the time length of a long data signal.
7. The method of claim 1, further characterized by determining the first information according to signaling information or a predetermined rule, wherein the first information comprises at least one of:
the number of OFDM symbols in which the measurement reference signal and the data signal are frequency division multiplexed in one time unit;
the number of OFDM symbols time-division multiplexed by the measurement reference signal and the data signal in one time unit;
a number of measurement reference signal OFDM symbols included within one time division multiplexing OFDM;
the duration of a short data signal included within one time division multiplexed OFDM.
8. The method of claim 7, wherein determining the first information according to a predetermined rule comprises:
notifying a beam ID of the measurement reference signal and a beam ID of the data signal;
determining the first information according to a relationship between a beam ID of the measurement reference signal and a beam ID of a data signal.
9. The method according to claim 8, wherein when the first information is notified by notifying a beam ID of a measurement reference signal and a beam ID of a data signal, the method comprises:
if at least one beam ID of a measurement reference signal and at least one beam ID of a data signal on the OFDM do not belong to any same beam ID set on the OFDM, the sending end determines that all the measurement reference signals and the data signals on the OFDM adopt time division multiplexing, and the number of the measurement reference signals in the OFDM of the time division multiplexing is the number of the corresponding measurement reference signals on the OFDM, so as to obtain the duration of the short data signal;
and on the OFDM where the measurement reference signal is located, when the beam ID of the measurement reference signal and the beam ID of the data signal on the OFDM belong to the same beam ID set, the measurement reference signal and the data signal are subjected to frequency division multiplexing.
10. The method of claim 9, wherein the beam ID set is signaled or pre-agreed by a transmitting end and a receiving end; there is no intersection between different beam ID sets;
the beam ID of the sounding reference signal includes the beam IDs of all beam sounding reference ports carried on the sounding reference signal.
11. The method of claim 9, wherein the beam ID of the data signal is signaled by one or more of:
sending a beam ID of a demodulation reference signal port corresponding to a demodulation downlink control signaling, wherein the beam IDs of all the demodulation reference ports corresponding to the downlink control signaling are the beam IDs of the data signals;
and/or sending the beam ID of the demodulation reference signal port corresponding to the demodulation downlink data channel, wherein all the beam IDs of the demodulation reference ports corresponding to the downlink data channel are the beam IDs of the data signals.
12. The method according to any one of claims 1 to 11, wherein, when the determined multiplexing pattern type includes a measurement reference signal and a data signal, the transmitting at least one of the measurement reference signal and the data signal comprises:
the time domain resources occupied by the measurement reference signal and the data signal are not overlapped; the length of a time domain symbol including a measurement reference signal is less than or equal to the length of a time domain symbol including a data signal, and the subcarrier spacing of the measurement reference signal is greater than or equal to the subcarrier spacing of the data signal.
13. The method of claim 12, wherein when the sounding reference signal and the data transmission symbol are both OFDM symbols, a sounding reference signal duration is less than or equal to a data signal duration, and a sounding reference signal subcarrier spacing is greater than or equal to a data signal subcarrier spacing:
the subcarrier spacing of the measurement reference signal is N/L times of the parameter of the subcarrier spacing of the data signal, wherein L, N are positive integers, N represents the integral multiple of the number of subcarriers contained in the minimum resource allocation unit for data transmission, and L is more than 0 and less than or equal to N.
14. The method of claim 13, wherein the parameter is a parameter of the wireless communication system
Figure FDA0002635377560000031
Wherein X representsAnd the number of data subcarriers in the frequency bandwidth corresponding to the minimum CSI feedback unit is obtained based on the measurement reference signal.
15. The method of claim 13, wherein the parameter is a parameter of the wireless communication system
Figure FDA0002635377560000032
Is a positive integer.
16. The method of claim 15, wherein the parameter is a parameter of the wireless communication system
Figure FDA0002635377560000033
Figure FDA0002635377560000034
Where m1, m2 ∈ {0,1}, and m3 is an integer.
17. The method of claim 13, wherein when there are multiple measurement reference signal ports on one OFDM symbol, the ports are transmitted by code division multiplexing or frequency division in frequency domain.
18. The method of claim 12, wherein when a duration of one of the sounding reference signals is less than a duration of a data signal, the sounding reference signal is a single-carrier symbol, and the data signal is an OFDM symbol, one or more of the following characteristics are satisfied:
the sequence of the measurement reference signal on port j is
Figure FDA0002635377560000041
Wherein, SL represents the length of a time domain signal sequence transmitted by the port j in the single carrier measurement reference signal;
the time interval between two signals in the time domain signal sequence is TgapThen, the process of the present invention,
the duration of a single carrier measurement reference signal is:
TCSI＝T1,CSI+TGP,T1,CSI＝Tgap*SL，TGP0 or TGP≥TDelayWherein, TDelayRepresents the maximum multipath delay; t isGPRepresenting the duration of a protection domain, wherein the power of a transmitted signal is 0;
the duration of a data signal is:
TData＝TCP,Data+T1,Datawherein, TCP,DataIndicating the corresponding CP length on one data OFDM symbol; t is1,DataIndicating the length of time that a data signal occupies valid data, when there are multiple data signals in a transmission unit, T1,DataRefers to the longest data signal duration;
wherein, TCSI≤TData；
Figure FDA0002635377560000042
L, N are all positive integers, N is an integer multiple of the number of sub-carriers contained in the minimum resource allocation unit for data transmission, 0<L≤N。
19. The method of claim 18, wherein a duration of one single carrier measurement reference signal is less than or equal to a coherence time of a channel.
20. The method according to claim 18, wherein one or more beam measurement ports are carried on one single carrier measurement reference signal; one beam measurement port corresponds to one mixed beam, and the mixed beam is kept unchanged on the system bandwidth occupied by the single-carrier symbols.
21. The method of claim 20, wherein a plurality of the beam measurement ports correspond to different hybrid beams; different mixed beams corresponding to different beam measurement ports are mixed beams weighted by different base bands of a fixed beam combination corresponding to the N antenna groups; wherein the beam combinations comprise the beams of each antenna group.
22. The method according to claim 18, wherein the sounding reference signal transmitted on one single carrier sounding reference signal satisfies the following characteristics:
the measurement reference signal sequence corresponding to the beam measurement port j satisfies the following conditions:
Figure FDA0002635377560000051
Figure FDA0002635377560000052
wherein M is Tgap≤TDelayAnd | a | represents the absolute value of a, (a)*Represents the conjugation of a;
the measured reference signal sequences corresponding to the different ports j1 and j2 satisfy:
Figure FDA0002635377560000053
23. the method of claim 12, wherein in one beam measurement period, P OFDM symbols including sounding reference signals are included, and P OFDM symbols including sounding reference signals are in one transmission unit;
the P value is indicated by one or more of the following:
the information is obtained through high-level signaling notification, and/or through dynamic signaling notification, and/or through other information calculation; and/or is a fixed value.
24. The method of claim 1, the measuring a relationship between beams of reference signals and beams of data signals comprising at least one of:
the beam of the measurement reference signal is the same as the beam of the data signal;
the beam of the measurement reference signal is different from the beam of the data signal;
the beams of the measurement reference signals and the beams of the data signals belong to the same beam set;
the beams of the measurement reference signals and the beams of the data signals belong to different sets of beams.
25. The method of claim 1, the relationship between the beams of the measurement reference signals and the beams of the data signals comprising one of:
a relationship between the measurement reference signal and a beam of a demodulation reference signal of a data channel;
the relation between the beams of the demodulation reference signal of the measurement reference signal and the control channel.
26. The method of claim 1, the data signal comprising at least one of: data channel signals, control channel signals, reference signals.
27. The method of claim 1, further characterized by:
one antenna group only corresponds to one beam on one OFDM symbol;
the total number of beams of the signal on one OFDM symbol is less than or equal to a predetermined value.
28. The method of claim 12, wherein the sequence generation function of the SRS comprises a short OFDM symbol index where the SRS is located, wherein the short OFDM symbol index comprises an index of the short OFDM symbol in a plurality of short OFDM symbols included in one long OFDM symbol.
29. The method of claim 1, further characterized in that one beam measurement reference signal port is transmitted on only one OFMD, different beam measurement reference ports are frequency domain code division multiplexed, or frequency division multiplexed in the frequency domain and not time domain code division multiplexed.
30. The method of claim 1, further characterized by:
there is a relationship between the beam relationship of the N signals and the multiplexing manner of the N signals, where N is a positive integer greater than or equal to 2.
31. The method of claim 30, wherein the association between the beam relationship of the N signals and the multiplexing of the N signals comprises at least one of:
determining a multiplexing mode of the N signals according to the beam relationship of the N signals;
in the case of N signals in the same time domain symbol, the beams of the N signals are the same or the beams of the N signals belong to the same set of beams.
32. The method according to claim 31, wherein the determining the multiplexing of the N signals according to the beam relationship of the N signals comprises at least one of:
when the beams of the N signals are the same or belong to the same beam set, the N signals may be frequency division multiplexed;
when the wave beams of the N signals are different or belong to different wave beam sets, the N signals cannot be subjected to frequency division multiplexing;
when the wave beams of the N signals are different or belong to different wave beam sets, the N signals are time division multiplexed;
when the beams of the N signals are different or belong to different beam sets, one or more signals in the N signals are not transmitted.
33. The method according to claim 31 or 32, wherein the N signals satisfy at least one of the following characteristics:
the N signals are associated with the same antenna group;
the signal comprises at least one of: measurement reference signals, data channel signals, control channel signals, reference signals, synchronization signals.
34. A method for implementing measurement reference signal transmission, comprising:
the receiving end determines the multiplexing pattern type of the measurement reference signal and the data signal according to the relation between the wave beam of the measurement reference signal and the wave beam of the data signal;
the receiving end receives at least one of the measurement reference signal and the data signal according to the determined multiplexing pattern type;
wherein the data signal comprises a signal other than the measurement reference signal.
35. The method of claim 34, wherein determining the type of multiplexing pattern for the sounding reference signal and the data signal according to the relationship between the beam for the sounding reference signal and the beam for the data signal comprises:
in case that the beam of the measurement reference signal and the beam of the data signal are identical or belong to the same beam set, the measurement reference signal and the data signal are frequency division multiplexed or time division multiplexed.
36. The method of claim 34, wherein determining the type of multiplexing pattern for the sounding reference signal and the data signal according to the relationship between the beam for the sounding reference signal and the beam for the data signal comprises:
in the case that the beam of the measurement reference signal and the beam of the data signal are different or belong to different beam sets, the multiplexing pattern of the measurement reference signal and the data signal includes one of:
the measurement reference signal and the data signal are time division multiplexed;
not receiving the measurement reference signal on the OFDM symbol where the data signal is located;
and not receiving the data signal on the OFDM symbol where the measurement reference signal is located.
37. The method of claim 36, the data signal not being received on an OFDM symbol on which the sounding reference signal is located, comprising
And informing the measurement reference signal port with the reception power of 0 or the OFDM symbol index with the reception power of 0 corresponding to the measurement reference signal port through signaling information.
38. The method of claim 34, further characterized in that a sounding reference signal for one sounding reference port is received on only one OFDM symbol.
39. The method of claim 34, wherein when the type of the multiplexing pattern of the sounding reference signal and the data signal is time division multiplexing, the multiplexing pattern satisfies the following characteristics:
one or more time-division multiplexed measurement reference signals have no data signal between them; and the number of the first and second groups,
the sum of the time lengths of one or more of the time-division multiplexed sounding reference signals is equal to the time length of a data signal, or the sum of the time lengths of one or more of the time-division multiplexed sounding reference signals and the time length of a short data signal is equal to the time length of a long data signal.
40. The method of claim 34, further characterized by determining the first information according to signaling information or a predetermined rule, wherein the first information comprises at least one of:
the number of OFDM symbols in which the measurement reference signal and the data signal are frequency division multiplexed in one time unit;
the number of OFDM symbols time-division multiplexed by the measurement reference signal and the data signal in one time unit;
a number of measurement reference signal OFDM symbols included within one time division multiplexing OFDM;
the duration of a short data signal included within one time division multiplexed OFDM.
41. The method of claim 40, wherein determining the first information according to a predetermined rule comprises
Notifying a beam ID of the measurement reference signal and a beam ID of the data signal;
determining the first information according to a relationship between a beam ID of the measurement reference signal and a beam ID of a data signal.
42. The method of claim 41, wherein when the first information is notified by notifying a beam ID of a measurement reference signal and a beam ID of a data signal, the method comprises:
if at least one beam ID of a measurement reference signal and at least one beam ID of a data signal on the OFDM do not belong to any same beam ID set on the OFDM, the receiving end determines that all the measurement reference signals and the data signals on the OFDM adopt time division multiplexing, and the number of the measurement reference signals in the OFDM of the time division multiplexing is the number of the corresponding measurement reference signals on the OFDM, so as to obtain the duration of the short data signal;
and on the OFDM where the measurement reference signal is located, when the beam ID of the measurement reference signal and the beam ID of the data signal on the OFDM belong to the same beam ID set, the measurement reference signal and the data signal are subjected to frequency division multiplexing.
43. The method of claim 42, wherein the beam ID set is signaled or pre-agreed by a transmitting end and a receiving end; there is no intersection between different beam ID sets;
the beam ID of the sounding reference signal includes the beam IDs of all beam sounding reference ports carried on the sounding reference signal.
44. The method of claim 42, wherein the beam ID of the data signal is signaled by one or more of:
receiving the beam ID of a demodulation reference signal port corresponding to a demodulation downlink control signaling, wherein the beam ID of all the demodulation reference ports corresponding to the downlink control signaling is the beam ID of a data signal;
and/or receiving the beam ID of the demodulation reference signal port corresponding to the demodulation downlink data channel, wherein all the beam IDs of the demodulation reference ports corresponding to the downlink data channel are the beam IDs of the data signals.
45. The method according to any one of claims 34 to 44, wherein, in the case that the determined multiplexing pattern type includes a measurement reference signal and a data signal, the receiving at least one of the measurement reference signal and the data signal comprises:
the time domain resources occupied by the measurement reference signal and the data signal are not overlapped; the length of a time domain symbol including a measurement reference signal is less than or equal to the length of a time domain symbol including a data signal, and the subcarrier spacing of the measurement reference signal is greater than or equal to the subcarrier spacing of the data signal.
46. The method of claim 45, wherein when the SRS and the data-receiving symbol are OFDM symbols, a SRS duration is less than or equal to a data signal duration, and a SRS subcarrier spacing is greater than or equal to a data signal subcarrier spacing:
the subcarrier spacing of the measurement reference signal is N/L times of the parameter of the subcarrier spacing of the data signal, wherein L, N are positive integers, N represents the integral multiple of the number of subcarriers contained in the minimum resource allocation unit for data transmission, and L is more than 0 and less than or equal to N.
47. The method of claim 46, wherein the parameter is a parameter of a signal received from a receiver
Figure FDA0002635377560000101
Wherein X represents the number of data subcarriers in the frequency bandwidth corresponding to the minimum CSI feedback unitThe CSI feedback is derived based on the measurement reference signal.
48. The method of claim 46, wherein the parameter is a parameter of a signal received from a receiver
Figure FDA0002635377560000102
Is a positive integer.
49. The method of claim 48, wherein the parameter is a parameter of a signal received from a receiver
Figure FDA0002635377560000103
Figure FDA0002635377560000104
Where m1, m2 ∈ {0,1}, and m3 is an integer.
50. The method of claim 46, wherein when there are multiple SRS ports on an OFDM symbol, the receiving is performed in frequency domain by code division multiplexing or frequency division.
51. The method of claim 45, wherein when a duration of one of the SRS is less than a duration of a data signal, the SRS is a single-carrier symbol, and the data signal is an OFDM symbol, one or more of the following characteristics are satisfied:
the sequence of the measurement reference signal on port j is
Figure FDA0002635377560000105
Wherein SL represents the length of a time domain signal sequence received by the port j at the single carrier measurement reference signal;
the time interval between two signals in the time domain signal sequence is TgapThen, the process of the present invention,
the duration of a single carrier measurement reference signal is:
TCSI＝T1,CSI+TGP,T1,CSI＝Tgap*SL，TGP0 or TGP≥TDelayWherein, TDelayRepresents the maximum multipath delay; t isGPRepresenting the duration of a guard domain, on which the received signal power is 0;
the duration of a data signal is:
TData＝TCP,Data+T1,Datawherein, TCP,DataIndicating the corresponding CP length on one data OFDM symbol; t is1,DataIndicating the length of time that a data signal occupies valid data, when there are multiple data signals in a transmission unit, T1,DataRefers to the longest data signal duration;
wherein, TCSI≤TData；
Figure FDA0002635377560000106
L, N are all positive integers, N is an integer multiple of the number of sub-carriers contained in the minimum resource allocation unit for data transmission, 0<L≤N。
52. The method according to claim 51, wherein a duration of one of said single-carrier sounding reference signals is less than or equal to a coherence time of a channel.
53. The method according to claim 51, wherein one or more beam measurement ports are carried on one said single carrier measurement reference signal; one beam measurement port corresponds to one mixed beam, and the mixed beam is kept unchanged on the system bandwidth occupied by the single-carrier symbols.
54. The method of claim 53, wherein a plurality of said beam measurement ports correspond to different hybrid beams; different mixed beams corresponding to different beam measurement ports are mixed beams weighted by different base bands of a fixed beam combination corresponding to the N antenna groups; wherein the beam combinations comprise the beams of each antenna group.
55. The method according to claim 51, wherein a received sounding reference signal on one of said Single-Carrier sounding reference signals satisfies the following characteristics:
the measurement reference signal sequence corresponding to the beam measurement port j satisfies the following conditions:
Figure FDA0002635377560000111
Figure FDA0002635377560000112
wherein M is Tgap≤TDelayAnd | a | represents the absolute value of a, (a)*Represents the conjugation of a;
the measured reference signal sequences corresponding to the different ports j1 and j2 satisfy:
Figure FDA0002635377560000113
56. the method according to claim 45, wherein in a beam measurement period, P OFDM symbols including sounding reference signals are included, and P OFDM symbols including sounding reference signals are in one transmission unit;
the P value is indicated by one or more of the following:
the information is obtained through high-level signaling notification, and/or through dynamic signaling notification, and/or through other information calculation; and/or is a fixed value.
57. The method of claim 34, the measuring a relationship between beams of reference signals and beams of data signals comprising at least one of:
the beam of the measurement reference signal is the same as the beam of the data signal;
the beam of the measurement reference signal is different from the beam of the data signal;
the beams of the measurement reference signals and the beams of the data signals belong to the same beam set;
the beams of the measurement reference signals and the beams of the data signals belong to different sets of beams.
58. The method of claim 34, the relationship between the beams of the measurement reference signals and the beams of the data signals comprising one of:
a relationship between the measurement reference signal and a beam of a demodulation reference signal of a data channel;
the relation between the beams of the demodulation reference signal of the measurement reference signal and the control channel.
59. The method of claim 34, the data signal comprising at least one of: data channel signals, control channel signals, reference signals.
60. The method of claim 34, further characterized by:
one antenna group only corresponds to one beam on one OFDM symbol;
the total number of beams of the signal on one OFDM symbol is less than or equal to a predetermined value.
61. The method of claim 45, wherein the sequence generation function of the SRS comprises a short OFDM symbol index at which the SRS is located, wherein the short OFDM symbol index comprises an index of the short OFDM symbol in a plurality of short OFDM symbols included in one long OFDM symbol.
62. The method of claim 34, further characterized in that one beam measurement reference signal port is received on only one OFMD, different beam measurement reference ports are frequency domain code division multiplexed, or frequency division multiplexed in the frequency domain and not time domain code division multiplexed.
63. The method of claim 34, further characterized by:
there is a relationship between the beam relationship of the N signals and the multiplexing manner of the N signals, where N is a positive integer greater than or equal to 2.
64. The method of claim 63, wherein the association between the beam relationship of the N signals and the multiplexing of the N signals comprises at least one of:
determining a multiplexing mode of the N signals according to the beam relationship of the N signals;
in the case of N signals in the same time domain symbol, the beams of the N signals are the same or the beams of the N signals belong to the same set of beams.
65. The method according to claim 64, wherein the determining the multiplexing of the N signals according to the beam relationship of the N signals comprises at least one of:
when the beams of the N signals are the same or belong to the same beam set, the N signals may be frequency division multiplexed;
when the wave beams of the N signals are different or belong to different wave beam sets, the N signals cannot be subjected to frequency division multiplexing;
when the wave beams of the N signals are different or belong to different wave beam sets, the N signals are time division multiplexed;
when the beams of the N signals are different or belong to different beam sets, one or more signals in the N signals are not transmitted.
66. The method of claim 64 or 65, wherein the N signals satisfy at least one of the following characteristics:
the N signals are associated with the same antenna group;
the signal comprises at least one of: measurement reference signals, data channel signals, control channel signals, reference signals, synchronization signals.
67. An apparatus for implementing measurement reference signal transmission is characterized by comprising a first determining unit, a first processing unit; wherein,
a first determination unit configured to determine a multiplexing pattern type of the sounding reference signal and the data signal according to a relationship between a beam of the sounding reference signal and a beam of the data signal;
a first processing unit, configured to transmit at least one of a measurement reference signal and a data signal according to the determined multiplexing pattern type;
wherein the data signal comprises a signal other than the measurement reference signal.
68. The apparatus according to claim 67, wherein the first determining unit is specifically configured to: in case that the beam of the measurement reference signal and the beam of the data signal are identical or belong to the same beam set, the measurement reference signal and the data signal are frequency division multiplexed or time division multiplexed.
69. The apparatus of claim 67, the determining of the multiplexing pattern classes for the sounding reference signal and the data signal according to the relationship between the beams for the sounding reference signal and the beams for the data signal comprising:
in the case that the beam of the measurement reference signal and the beam of the data signal are different or belong to different beam sets, the multiplexing pattern of the measurement reference signal and the data signal includes one of:
the measurement reference signal and the data signal are time division multiplexed;
not transmitting the measurement reference signal on the OFDM symbol where the data signal is located;
and not transmitting the data signal on the OFDM symbol where the measurement reference signal is located.
70. The apparatus of claim 69, the not transmitting the data signal on the OFDM symbol where the sounding reference signal is located, comprising:
and informing the measurement reference signal port with the transmission power of 0 or the OFDM symbol index with the transmission power of 0 corresponding to the measurement reference signal port through signaling information.
71. The apparatus of claim 67, further characterized in that a SRS corresponding to one SRS port is transmitted on only one OFDM symbol.
72. The apparatus of claim 67, wherein when the type of the multiplexing pattern of the sounding reference signal and the data signal is time division multiplexing, the multiplexing pattern satisfies the following characteristics:
one or more time-division multiplexed measurement reference signals have no data signal between them; and the number of the first and second groups,
the sum of the time lengths of one or more of the time-division multiplexed sounding reference signals is equal to the time length of a data signal, or the sum of the time lengths of one or more of the time-division multiplexed sounding reference signals and the time length of a short data signal is equal to the time length of a long data signal.
73. The apparatus of claim 67, further characterized in that the first information is determined according to signaling information or a predetermined rule, wherein the first information comprises at least one of:
the number of OFDM symbols in which the measurement reference signal and the data signal are frequency division multiplexed in one time unit;
the number of OFDM symbols time-division multiplexed by the measurement reference signal and the data signal in one time unit;
a number of measurement reference signal OFDM symbols included within one time division multiplexing OFDM;
the duration of a short data signal included within one time division multiplexed OFDM.
74. The apparatus of claim 73, wherein the determining the first information according to a predetermined rule comprises
Notifying a beam ID of the measurement reference signal and a beam ID of the data signal;
determining the first information according to a relationship between a beam ID of the measurement reference signal and a beam ID of a data signal.
75. The apparatus of claim 74, wherein when the first information is notified by notifying a beam ID of a measurement reference signal and a beam ID of a data signal, the apparatus comprises:
if at least one beam ID of a measurement reference signal and at least one beam ID of a data signal on the OFDM do not belong to any same beam ID set on the OFDM, the sending end determines that all the measurement reference signals and the data signals on the OFDM adopt time division multiplexing, and the number of the measurement reference signals in the OFDM of the time division multiplexing is the number of the corresponding measurement reference signals on the OFDM, so as to obtain the duration of the short data signal;
and on the OFDM where the measurement reference signal is located, when the beam ID of the measurement reference signal and the beam ID of the data signal on the OFDM belong to the same beam ID set, the measurement reference signal and the data signal are subjected to frequency division multiplexing.
76. The apparatus of claim 75, wherein the set of beam IDs is signaled or pre-agreed by a transmitting end and a receiving end; there is no intersection between different beam ID sets;
the beam ID of the sounding reference signal includes the beam IDs of all beam sounding reference ports carried on the sounding reference signal.
77. An apparatus for implementing transmission of a sounding reference symbol sounding reference signal includes a second determining unit, a second processing unit; wherein,
a second determination unit configured to determine a multiplexing pattern type of the sounding reference signal and the data signal according to a relationship between a beam of the sounding reference signal and a beam of the data signal;
a second processing unit, configured to receive at least one of a measurement reference signal and a data signal according to the determined multiplexing pattern type;
wherein the data signal comprises a signal other than the measurement reference signal.
78. The apparatus according to claim 77, wherein the second determining unit is specifically configured to: in case that the beam of the measurement reference signal and the beam of the data signal are identical or belong to the same beam set, the measurement reference signal and the data signal are frequency division multiplexed or time division multiplexed.
79. The apparatus of claim 77, wherein determining the type of multiplexing pattern for the SRS and the data signal based on the relationship between the beam for the SRS and the beam for the data signal comprises:
in the case that the beam of the measurement reference signal and the beam of the data signal are different or belong to different beam sets, the multiplexing pattern of the measurement reference signal and the data signal includes one of:
the measurement reference signal and the data signal are time division multiplexed;
not receiving the measurement reference signal on the OFDM symbol where the data signal is located;
and not receiving the data signal on the OFDM symbol where the measurement reference signal is located.
80. The apparatus of claim 79, wherein the data signal is not received on an OFDM symbol on which the sounding reference signal is located, comprising
And informing the measurement reference signal port with the reception power of 0 or the OFDM symbol index with the reception power of 0 corresponding to the measurement reference signal port through signaling information.
81. The apparatus of claim 79, wherein a SRS corresponding to one SRS port is received on only one OFDM symbol.
82. The apparatus of claim 77, wherein the multiplexing pattern satisfies the following characteristics if the type of the multiplexing pattern of the sounding reference signal and the data signal is time division multiplexing:
one or more time-division multiplexed measurement reference signals have no data signal between them; and the number of the first and second groups,
the sum of the time lengths of one or more of the time-division multiplexed sounding reference signals is equal to the time length of a data signal, or the sum of the time lengths of one or more of the time-division multiplexed sounding reference signals and the time length of a short data signal is equal to the time length of a long data signal.
83. The apparatus of claim 77, wherein the first information is determined according to the signaling information or a predetermined rule, wherein the first information comprises at least one of:
the number of OFDM symbols in which the measurement reference signal and the data signal are frequency division multiplexed in one time unit;
the number of OFDM symbols time-division multiplexed by the measurement reference signal and the data signal in one time unit;
a number of measurement reference signal OFDM symbols included within one time division multiplexing OFDM;
the duration of a short data signal included within one time division multiplexed OFDM.
84. The apparatus of claim 83, wherein the determining the first information according to a predetermined rule comprises
Notifying a beam ID of the measurement reference signal and a beam ID of the data signal;
determining the first information according to a relationship between a beam ID of the measurement reference signal and a beam ID of a data signal.
85. The apparatus of claim 84, wherein when the first information is notified by notifying a beam ID of a measurement reference signal and a beam ID of a data signal, the apparatus comprises:
if at least one beam ID of a measurement reference signal and at least one beam ID of a data signal on the OFDM do not belong to any same beam ID set on the OFDM, the receiving end determines that all the measurement reference signals and the data signals on the OFDM adopt time division multiplexing, and the number of the measurement reference signals in the OFDM of the time division multiplexing is the number of the corresponding measurement reference signals on the OFDM, so as to obtain the duration of the short data signal;
and on the OFDM where the measurement reference signal is located, when the beam ID of the measurement reference signal and the beam ID of the data signal on the OFDM belong to the same beam ID set, the measurement reference signal and the data signal are subjected to frequency division multiplexing.
CN201610027927.3A 2016-01-15 2016-01-15 Method and device for realizing transmission of measurement reference symbols Active CN106982184B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201610027927.3A CN106982184B (en) 2016-01-15 2016-01-15 Method and device for realizing transmission of measurement reference symbols
CN202011554105.3A CN112615706B (en) 2016-01-15 2016-01-15 Signal sending method, signal receiving method and device
PCT/CN2016/092420 WO2017121095A1 (en) 2016-01-15 2016-07-29 Method and device for realizing transmission of measurement reference symbol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610027927.3A CN106982184B (en) 2016-01-15 2016-01-15 Method and device for realizing transmission of measurement reference symbols

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN202011554105.3A Division CN112615706B (en) 2016-01-15 2016-01-15 Signal sending method, signal receiving method and device

Publications (2)

Publication Number Publication Date
CN106982184A CN106982184A (en) 2017-07-25
CN106982184B true CN106982184B (en) 2020-11-10

Family

ID=59310769

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201610027927.3A Active CN106982184B (en) 2016-01-15 2016-01-15 Method and device for realizing transmission of measurement reference symbols
CN202011554105.3A Active CN112615706B (en) 2016-01-15 2016-01-15 Signal sending method, signal receiving method and device

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202011554105.3A Active CN112615706B (en) 2016-01-15 2016-01-15 Signal sending method, signal receiving method and device

Country Status (2)

Country Link
CN (2) CN106982184B (en)
WO (1) WO2017121095A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109412764B (en) * 2017-08-17 2022-07-29 华为技术有限公司 Synchronization method and device
EP3605935B1 (en) 2017-11-17 2022-06-22 Huawei Technologies Co., Ltd. Communication method and apparatus
CN110401470B (en) * 2017-11-17 2020-07-07 华为技术有限公司 Communication method and device, computer readable storage medium
CN110505698B (en) 2018-05-18 2023-06-23 中兴通讯股份有限公司 Channel configuration method, terminal, storage medium and electronic device
CN110798292B (en) * 2018-08-02 2021-01-08 维沃移动通信有限公司 Method and device for mapping feedback information
CN110831219B (en) * 2018-08-10 2021-08-24 北京紫光展锐通信技术有限公司 Service conflict processing method, user terminal and computer readable storage medium
CN113037403B (en) * 2019-12-24 2023-08-15 维沃移动通信有限公司 Method and device for measuring received power of side link reference signal and communication equipment
CN116112046A (en) * 2021-11-10 2023-05-12 华为技术有限公司 Reference signal transmission method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873625A (en) * 2009-04-27 2010-10-27 大唐移动通信设备有限公司 Relay link channel estimation method, system and equipment
CN102158292A (en) * 2010-02-12 2011-08-17 中兴通讯股份有限公司 Method for transmitting channel measurement pilot frequency and base station
CN102195741A (en) * 2010-03-10 2011-09-21 华为技术有限公司 Method and device for transmitting channel state information reference signal (CSI-RS)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7826471B2 (en) * 2003-03-11 2010-11-02 Nortel Networks Limited Multi-beam cellular communication system
JP4099118B2 (en) * 2003-08-08 2008-06-11 株式会社エヌ・ティ・ティ・ドコモ Signal transmission apparatus and signal transmission method
US7742533B2 (en) * 2004-03-12 2010-06-22 Kabushiki Kaisha Toshiba OFDM signal transmission method and apparatus
WO2007113923A1 (en) * 2006-04-06 2007-10-11 Hitachi Communication Technologies, Ltd. Wireless communication system, radio base station apparatus and radio terminal apparatus
CN101394213B (en) * 2007-09-19 2013-05-08 中兴通讯股份有限公司 Multi-antenna communication method for time division duplexing mode frequency division multiplexing system
CN101447815B (en) * 2007-11-27 2013-02-13 电信科学技术研究院 Shaped-beam transmission method and shaped-beam transmission device
CN101552757B (en) * 2008-04-04 2013-01-16 中兴通讯股份有限公司 Mapping method of pilot frequency and physical resource block special for downstream and transmitting device thereof
US9077415B2 (en) * 2011-12-19 2015-07-07 Samsung Electronics Co., Ltd. Apparatus and method for reference symbol transmission in an OFDM system
CN102916735B (en) * 2012-10-17 2016-06-08 东南大学 Utilize the wireless communications method of large-scale antenna array
CN103944847B (en) * 2013-01-18 2019-06-18 中兴通讯股份有限公司 Frequency pilot sign carrying and processing method, device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873625A (en) * 2009-04-27 2010-10-27 大唐移动通信设备有限公司 Relay link channel estimation method, system and equipment
CN102158292A (en) * 2010-02-12 2011-08-17 中兴通讯股份有限公司 Method for transmitting channel measurement pilot frequency and base station
CN102195741A (en) * 2010-03-10 2011-09-21 华为技术有限公司 Method and device for transmitting channel state information reference signal (CSI-RS)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Evaluations on CSI-RS Patterns;CATT;《3GPP TSG RAN WG1 meeting #59bis Valencia， Spain， 18th – 22nd January 2010》;20100122;第1-7页 *

Also Published As

Publication number Publication date
CN112615706B (en) 2022-08-19
WO2017121095A1 (en) 2017-07-20
CN112615706A (en) 2021-04-06
CN106982184A (en) 2017-07-25

Similar Documents

Publication Publication Date Title
CN106982184B (en) Method and device for realizing transmission of measurement reference symbols
CN107040345B (en) Method and apparatus for transmitting pilot signal
CN101635950B (en) Method and device for determining positions of cell reference signals
US8380215B2 (en) Method and apparatus of scheduling in multi-cell cooperative wireless communication system
US9780901B2 (en) Method and apparatus for reference signaling allocation and channel estimation in distributed antenna systems
US20130229992A1 (en) Coordinated Multiple Point Transmission and Reception
CN102088309B (en) Method and device for generating reference signal used for estimating channel quality
US20060146948A1 (en) Adaptive pilot allocation method and apparatus for use in a communication system
US10958396B2 (en) Method and device for sending reference signal
CN107733828B (en) Method and equipment for determining baseband parameters
WO2005018186A1 (en) Sub-carrier allocation method for reducing inter-cell interference in ofdm cellular environment
WO2018059112A1 (en) Antenna beam management method and related device
CN103281768B (en) A kind of CRS power determining method and equipment
CN108337688B (en) Wave beam distribution method and device of millimeter wave communication system
WO2010068029A2 (en) Reference signal transmission method for downlink multiple input multiple output system
US10805137B2 (en) Reference signal having flexible structure
CN103843382A (en) Method, base station and user equipment for transmitting broadcast message
CN101610104B (en) Method and device for distributing power of user dedicated reference symbols
CN110024342B (en) Transmission method, apparatus and computer readable storage medium based on parameter set selection
US20100159914A1 (en) Radio communication system
KR20140107956A (en) Method and apparatus for measuring downlink interference in new carrier type based on ofdm mobile communication system
US8571589B2 (en) Wireless communication system, wireless communication method, and base station
KR101974016B1 (en) Data transmitting method using ofdm and noma
JP2019519970A (en) Reference signal transmission method and apparatus
KR20080079497A (en) Method for constructing subchannel in communication system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant