CN112615706B

CN112615706B - Signal sending method, signal receiving method and device

Info

Publication number: CN112615706B
Application number: CN202011554105.3A
Authority: CN
Inventors: 张淑娟; 毕峰; 刘文豪; 苗婷
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-01-15
Filing date: 2016-01-15
Publication date: 2022-08-19
Anticipated expiration: 2036-01-15
Also published as: CN106982184B; CN112615706A; WO2017121095A1; CN106982184A

Abstract

The invention discloses a method and a device for realizing measurement reference symbol transmission, which comprises the steps of determining the multiplexing pattern types 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.

Description

Signal sending method and device and signal receiving method and device

The application is a divisional application of a patent application with the filing date of 2016, 1, 15 and the filing number of 201610027927.3, entitled "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 transmitting and receiving a signal based on a high-frequency hybrid beam communication manner.

Background

With the development of communication technology, the demand of data services is increasing, and available low-frequency carriers are 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 and can provide 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 transmitting end determines a multiplexing pattern type according to the result of whether the directions of the data wave beam required to be transmitted currently and the radio frequency wave beam corresponding to the measuring wave beam conflict or not, and informs the receiving end 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 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 measurement reference symbol port with the transmission power of 0 indicated by a first signaling 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 type to the sixth multiplexing type, the srs corresponding to one srs port is only sent on one OFDM symbol of frequency division multiplexing, or only sent 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:

no data symbols between one or more time-division multiplexed measurement reference symbols within the time-division multiplexed OFDM; 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 and the duration of the short data symbol in one time division multiplexing OFDM 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 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 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 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 demodulation reference port beam IDs 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 N/L is less than or equal to X, where X represents the number of data subcarriers in the frequency bandwidth corresponding to the minimum CSI feedback unit, and CSI feedback is obtained based on the measurement reference signal.

Optionally, the parameter N/L is a positive integer.

Optionally, the parameter N/L ═ 3 ^m1 *5 ^m2 *2 ^m3 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

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 T _gap Then, the first and second images are combined,

the duration of one single carrier measurement reference symbol is:

T _CSI ＝T _1,CSI +T _GP ,T _1,CSI ＝T _gap *SL，T _GP 0 or T _GP ≥T _Delay Wherein, T _Delay Represents the maximum multipath delay; t is _GP Representing the time length of a protection domain, wherein the power of a transmitted signal on the time length is 0;

the duration of one data symbol is:

T _Data ＝T _CP,Data +T _1,Data wherein, T _CP,Data Indicating the corresponding CP length on one data OFDM symbol; t is a unit of _1,Data Indicating the length of time occupied by valid data of a data symbol, T when there are multiple data symbols in a transmission unit _1Data Refers to the longest data symbol duration;

wherein, T _GSI ≤T _Data ；

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 N/L is a positive integer.

Optionally, the parameter N/L ═ 3 ^m1 *5 ^m2 *2 ^m3 Wherein 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 symbol.

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:

wherein M is T _gap ≤T _Delay And | a | represents the absolute value of a, (a) ^* Represents the conjugation of a;

the sequences of the sounding reference signals corresponding to the different ports j1 and j2 satisfy:

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:

wherein Btotal, 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,q represents the number of beams that can be simultaneously transmitted on one sounding 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 baseband 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:

wherein,

representing a directional diagram corresponding to the jth mixed beam;

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:

wherein,

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:

optionally, the pairAF for different mixed beams of different baseband weights of corresponding one fixed beam combination of N antenna groups _RF (phi) are the same as each other,

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 category 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.

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.

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 the 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 can not 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, the fifth type 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.

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,

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.

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.

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;

sending a beam ID of a demodulation reference signal port corresponding to the demodulation downlink control signaling, wherein all the demodulation reference port beam IDs corresponding to the downlink control signaling are the beam IDs of the 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:

Optionally, when the sounding reference symbol and the data transmission symbol are both OFDM symbols, a duration of one sounding reference symbol is less than or equal to a duration of one data symbol, and a subcarrier spacing of the sounding reference symbol is greater than or equal to a subcarrier spacing of the data symbol:

Optionally, the parameter N/L is not greater than X, where 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 N/L is a positive integer.

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:

on port jThe measured reference signal sequence is

the duration of one single carrier measurement reference symbol is:

T _CSI ＝T _1,CSI +T _GP ,T _1,CSI ＝T _gap *SL，T _GP 0 or T _GP ≥T _Delay Wherein, T _Delay Represents the maximum multipath delay; t is a unit of _GP Representing the duration of a protection domain, wherein the power of a transmitted signal is 0;

the duration of one data symbol is:

T _Data ＝T _CP,Data +T _1,Data wherein, T _CP,Data Indicating the length of a corresponding CP on one data OFDM symbol; t is _1,Data Indicating the length of time occupied by valid data of a data symbol, T when there are multiple data symbols in a transmission unit _1,Data Refers to the longest data symbol duration;

wherein, T _CSI ≤T _Data ；

Optionally, the parameter N/L is a positive integer.

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.

the measured reference signal sequences corresponding to the different ports j1 and j2 satisfy:

the P value is indicated by one or more of the following:

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, which is specifically expressed as:

wherein,

representing a directional diagram corresponding to the jth mixed beam;

wherein,

optionally, the AF corresponding to different mixed beams weighted by different base bands of corresponding one fixed beam combination of the N antenna groups _RF (phi) are the same as each other,

different.

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 are invisibly informed according to 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.

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 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 can not 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;

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 data symbols are frequency division multiplexed; 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 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, 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 (c) a second step of,

Optionally, when the multiplexing pattern of the measurement reference symbols and the data symbols is of a sixth multiplexing type,

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 a multiplexing pattern type obtained by signaling from a 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 (orthogonal frequency division multiplexing) with the sounding reference symbol, the channel estimation value of the same demodulation reference signal port between OFDM with the sounding reference symbol and OFDM without the sounding reference symbol cannot be subjected to time domain interpolation, and the channel estimation value of the same demodulation reference signal port between the OFDM without the sounding 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;

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 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:

the sum of the durations of one or more time-division multiplexed measurement reference symbols is equal to the duration of one data symbol; or the sum of the duration of one or more time-division multiplexed measurement reference symbols and the duration of one short data symbol is equal to 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.

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 of the measurement beams and the data beams on the direction requirements of the radio frequency beams of the limited radio frequency link 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 hybrid beamforming communication model;

FIG. 3 is a schematic diagram of a first embodiment of a pattern for measuring a time-domain relationship between a 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 diagram of a third embodiment of the S domain of the present invention when P is 2;

fig. 19 is a schematic 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 of the present invention when P is 8;

fig. 22 is a structural diagram of an embodiment of a transmission unit when P ═ 1 according to the present invention;

fig. 23 is a structural diagram 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 the first embodiment of patterns of Measure reference symbols and demodulation reference symbols for the multiplexing category III 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 of Measure reference symbols and demodulation reference symbols for a multiplexing category three in accordance with 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 sounding reference symbols according to 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 of a second embodiment of a sounding reference symbol at the last bit of a transmission cell according to the 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 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 from enough 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. Moreover, since it is desirable to complete the transmission of all the measurement beams that need to be transmitted in one beam measurement period in fewer transmission units as much as possible, the direction of the data beam in one transmission unit is generally fixed, which undoubtedly causes the measurement beam and the data beam to compete for using a limited radio frequency link.

That is, since the number of radio frequency links is limited, 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 in a transmission unit to which the measurement reference symbols need to be transmitted, determining the multiplexing pattern type of the measurement reference symbols and the data symbols.

The transmission unit in this step, which has the measurement reference symbol to send, is:

Determining the multiplexing pattern types of the measurement reference symbols and the data symbols in the step comprises the following steps:

a transmitting end and a receiving end agree on a multiplexing pattern type in advance; or,

one embodiment is to obtain the multiplexing type according to the timeslot number and subframe number, such as class _ t ═ mod (n) according to a group of multiplexing pattern types implicitly notified by the relevant time domain parameters of the transmission unit by the transmitting end and the receiving end, respectively _f1 *20+n _f 6) in which n _f1 Is the system frame number, n _f The 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, the 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 in which the sounding reference symbol and the data symbol are frequency division multiplexed, 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.

Wherein, when the multiplexing mode is frequency division multiplexing, the frequency division multiplexing is: on OFDM with measurement reference symbols, the measurement reference symbols and data symbols are frequency division multiplexed;

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 sounding 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, the 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, the fifth type 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 the OFDM of frequency division multiplexing or the OFDM without the 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, the signaling to be notified by the sending end is different, the demodulation reference signal patterns correspondingly sent by the sending end are different, and the 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 frequency division multiplexing OFDM symbol, or only transmitted on one time division multiplexing sounding reference symbol.

And sending a measurement reference signal corresponding to one or more measurement reference ports on one OFDM symbol by frequency division multiplexing, wherein the measurement reference ports are sent 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:

there are no data symbols between one or more time-multiplexed measurement reference symbols within time-multiplexed OFDM; and (c) a second step of,

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, and at this time, 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 may also carry the sounding reference signal 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, its time domain is equal to the time domain length corresponding to the minimum unit of resource scheduling, and its 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 multiplexing type,

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, a transmitting end assumes that all the measurement reference signals are transmitted 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 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 sounding 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 time division multiplexing OFDM is the number of the corresponding measurement reference symbols on the OFDM, so that the time length of the short data symbol is obtained. 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 demodulation reference port beam IDs 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 may be 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 a 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 demodulation downlink data channel, wherein all the demodulation reference port beam IDs 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 interval of the measurement reference symbols is N/L times of the subcarrier interval 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 L is more than 0 and less than or equal to N.

Further, N/L is less than or equal to X, wherein X represents the number of data subcarriers in the frequency bandwidth corresponding to the minimum CSI feedback unit, and CSI feedback is obtained based on the measurement reference signal.

Preferably, N/L is a positive integer. Youyou (an instant noodle)Optionally, N/L is 3 ^m1 *5 ^m2 *2 ^m3 Wherein 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 lattices 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

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 T _gap Then, the process of the present invention,

the duration of a single carrier measurement reference symbol is:

T _CSI ＝T _1,CSI +T _GP ,T _1,CSI ＝T _gap *SL，T _GP 0 or T _GP ≥T _Delay Wherein, T _Delay Represents the maximum multipath delay; t is _GP Representing the duration of a protection domain, wherein the power of a transmitted signal is 0;

the duration of one data symbol is:

wherein, T _CSI ≤T _Data ；

Preferably, the first and second electrodes are formed of a metal,

is a positive integer. Further preferably, N/L ═ 3 ^m1 *5 ^m2 *2 ^m3 Wherein 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 beam measurement ports are orthogonal.

Further, the air conditioner is characterized in that,

the sounding reference signal transmitted on one single carrier sounding reference symbol (S-CSI-Time Sequence for short) satisfies the following characteristics:

the sequence of the measurement reference signal corresponding to one beam measurement port j satisfies the following conditions:

wherein M is T _gap ≤T _Delay And | a | represents the absolute value of a, (a) ^* Represents the conjugation of a.

wherein,

in a 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 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:

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.

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 there is a mixed beam, the different mixed beams are mixed beams weighted for different baseband of one fixed beam combination corresponding to the N antenna groups; the beam direction of each antenna group in the beam combination is the beam direction of the antenna group, and is specifically represented as:

wherein,

representing a directional diagram corresponding to the jth mixed beam;

wherein,

further, AF for different mixed beams weighted differently for different baseband of corresponding one fixed beam combination of N antenna groups _RF (phi) are the same as each other,

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 of the measurement beam and the data beam on the requirements of the limited radio frequency link radio frequency beam direction 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 of which is connected to M transmittersThe n-th radio frequency link performs radio frequency beamforming, i.e. multiplying by W, on signals from a digital baseband _n ＝[w _n1 w _n2 … w _nM ] ^T And then, the M antenna elements connected with the nth radio frequency link are transmitted. In the embodiment of the present invention, it is assumed that signals from a digital baseband signal to each radio frequency link at a transmitting end are time domain signals, that is, sequences S1, S2, and … SN in fig. 2 are time domain signals, at this time, each radio frequency beam forming is applied to the time domain signals, which is equivalent to that the radio frequency beam forming is performed on full bandwidth signals, that is, only one radio frequency beam can be generated on one OFDM symbol by one radio frequency link, in one measurement period, multiple radio frequency beams of one radio frequency link need to be measured, and one or multiple radio frequency 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 a plurality of radio frequency links.

Example 1

In embodiment 1, one sounding reference symbol is an OFDM symbol, and the multiplexing mode of the sounding reference symbol and the data symbol is a first type of multiplexing mode, that is, in all transmission units having a sounding beam to be transmitted, all the sounding reference symbols and the 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 L _pattern A set, having no data symbols between the P measurement reference symbols in the same pattern; the P sounding reference symbol durations or the P sounding reference symbol durations and a short data symbol duration are equal to a long data symbol duration.

As shown in fig. 3 to fig. 6, a transmission time unit forms a long data symbol (D-OFDM), that is, a data symbol aligned with multiple sounding reference symbols, by 14 OFDM symbols with the same duration, where the duration of each OFDM symbol is: t is _Data ＝T _CP,Data + T _1,Data Only 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 shows a measured reference signal anda first embodiment of a time domain relation pattern of data symbols is illustrated, wherein region S is the 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 diagram illustrating a third embodiment of the present invention for measuring the time domain relationship pattern of the reference signal and the data symbol, wherein the region S is the 10 th D-OFDM symbol; FIG. 6 is a diagram illustrating a fourth embodiment of a time domain relationship pattern of a sounding reference signal and a data symbol according to the 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) field is included between the measurement reference region and the data region, or the GP field exists between P measurement reference symbols of the S-CSI and the GP field 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: and P is Btotal/Q, wherein Btotal and Q are positive integers, Btotal represents the total number of beams required 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 (which may be abbreviated as S-CSI-OFDM) of the region S and the duration of Data OFDM symbols (which may be abbreviated as S-Data-OFDM) of one region S, and the duration of GP length, including CP length, is equal to the duration of one D-OFDM symbol.

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 T _CP,Data ＝MT _1,Data In example 1

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

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,

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

Is a positive integer. At the same time, it is necessary to satisfy that the S-Data region constitutes an S-Data-OFDM symbol, and

wherein K is a positive integer satisfying 0<K.ltoreq.N, preferably,

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, the subcarrier spacing in the S-CSI region is equal to that in the S-CSI regionFrequency-domain wideband on one PRB resource of the D-OFDM region. That is, compatible with existing LTE, there is one sounding reference resource corresponding to one PRB resource, then: based on 1) the CP length of the OFDM symbol of the S-CSI domain and the CP length of the symbol of the S-Data-OFDM domain are equal to the CP length of the D-OFDM domain; 2)

is a positive integer; is a positive integer; 4) the four preferable characteristics that the time length of each measured OFDM in the S-CSI domain is the same are obtained, and the parameters of the S-OFDM shown in the table 1 are obtained:

TABLE 1

At this time, the transmitting end and the receiving end may establish the measurement pilot configuration as shown in table 2, and a blank entry in table 2 indicates that there is no such configuration.

TABLE 2

In another implementation of example 1, the S-OFDM domain may be designed based on the parameters shown in Table 3.

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
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 to be inserted between the respective different OFDM symbols of the S-OFDM region, which include the OFDM of the S-CSI region and the 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.

TABLE 5

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 by 12MHz or 30.72 by 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, which is an example of the existing LTE, and in other system designs, such as high frequency system designs, 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 the present embodiment, N is 2 ^m ＝M2 ^m1 In which 2 is ^m1 The number of subcarriers included in the minimum unit of the corresponding resource scheduling of the D-OFDM region is shown, taking the current LTE as an example 2 ^m1 I.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 1,2 ^m1 16, 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)

is a positive integer; 3)

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:

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.

TABLE 8

In another implementation of example 2, assume 2 ^m1 16, N-2 × 16-32, so that the parameters of the region S domain as shown in table 9 can be obtained based on the preferred features of the above 1) to 4).

TABLE 9

As shown in table 9, in P ═ 4, the CP length of the first 2S-CSI-OFDM symbols of 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.

TABLE 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 time durations of P S-CSI-OFDM symbols and one S-Data-OFDM symbol is still satisfied as the time duration of one D-OFDM symbol, in which case, the various OFDM symbol time durations include the CP length thereof. 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.

TABLE 11

The positions where P S-CSI-OFDM symbols and one S-Data-OFDM symbol are inserted at various values of P in embodiment 2 are merely an example, and are not intended to limit the method of insertion. Also, this embodiment does not exclude equally dividing a region S into P ₁ A number of S-CSI-OFDM-Pre symbolsNumber III, wherein, P ₁ Obtaining the maximum number of S-CSI-OFDM-Pre symbols which can be evenly divided in one area S according to the four preferred characteristics of 1) to 4) in the embodiment, and then adding P ₁ The 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 P ₁ The P OFDM symbols may be used for transmission of data or assume a transmission power of 0. Therefore, the CSI areas of all cells are aligned, and the mutual interference between the CSI measurement signals and Data among the cells is controlled.

Example 3

In embodiment 3, the sounding reference signal is transmitted periodically and/or aperiodically.

When the sounding reference signal is periodically transmitted, the 1 st or 1 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 the other subframe structures have no measurement signal transmission, and the subframe structure is 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 notified by a new P value and pattern indication.

If there is no subframe of periodic sounding reference signal in a sounding period and 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, time domain pattern relationships between P measurement reference signals in the S-CSI domain and S-Data-OFDM, D-OFDM, and 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

The measurement reference signal regions, that is, time-frequency resource lattices (REs) (may be abbreviated as S-CSI-OFDM-REs) on one S-CSI-OFDM symbol, may only send one port signal on the same time-frequency resource, and the port may correspond to one beam of one radio frequency link, or may correspond 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:

in formula (1), a constant l represents an OFDM symbol index in one subframe; n is a radical of an alkyl radical _s Representing a subframe index; c (m) is a sequence of m with initialization values generated as a function of:

the generation function of the m-sequence is initialized once at each OFDM start, where

Is the virtual cell number of the SRS, P is the index of P SRS in an S domain, N _CP Is the CP Length index, N _CP Belonging 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):

in the formula (2), the first and second groups of the chemical reaction are represented by the following formula,

and representing the base band 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):

then, for y ⁱ (m) the time domain Fy sequence obtained by performing IFFT on the sequence is as shown in formula (4):

adding CP to form the i-th rf link baseband output Si sequence shown in fig. 2 is shown in equation (5):

finally, the equivalent baseband signal transmitted by the ijth antenna element shown in fig. 2 connected to the ith rf link is shown in equation (6):

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):

however, on one S-CSI-OFDM-RE resource, only the srs of one port can be transmitted, except for the code division multiplexing of the srs on multiple S-CSI-OFDM-RE resources, and the srs corresponding to at most M ports is transmitted on 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 W _j,m,BB Adjustment of the baseband precoding vectors into a hybrid beam, assuming W _j,m,BB Is 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 may obtain the channel quality of the receiving end when the 4 th radio frequency link sends out the beam direction shown as beam 4 based on the received signal on the 0 th S-CSI-OFDM-RE and the measurement reference signal on the port j.

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, a subframe pattern and a 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 length of the S-CSI-OFDM 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)T _{S-CSI-TimeSequence} ≤T _D-Data ；

2) one S-CSI-TimeSequence is divided into two domains, wherein the first domain transmits a time domain measurement reference signal sequence T _{S-CSI-TimeSequence,1} The second domain is a protection domain T _{S-CSI-TimeSequence,2} The duration of the guard field is greater than or equal to T _Delay I.e. T _{S-CSI-TimeSequence,2} ≥T _Delay Wherein, T _Delay Representing the maximum multipath delay, the signal power in the guard domain is 0. In particular, the GP domain in fig. 12 to 17 is T _{S-CSI-TimeSequence,2} The domain, and the S-CSI-OFDM domain in this embodiment is T _{S-CSI-TimeSequence,1} 。

3)

Wherein L, N are all positive integers. Further, N is an integer multiple of the number of subcarriers included in the minimum resource allocation unit for data transmission, 0<L≤And N is added. Wherein, T _1,D-Data A time domain length of one D-OFDM after removing the CP length;

4) measurement reference signals corresponding to a plurality of ports can be simultaneously transmitted on one S-CSI-TimeSequence symbol, different measurement reference signals are different mixed beams obtained after weighting adjustment is performed on different baseband beams of a beam combination of the same radio frequency link group, and the mixed beams corresponding to the same port on the whole 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:

wherein,

is the measurement reference signal sequence of the jth port.

The sounding reference signal sequence corresponding to the same port needs to satisfy the following characteristics:

wherein M is 1, … M,

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:

wherein,

and indicating that the second porti measurement port corresponds to the baseband precoding weight of the ith radio frequency link.

Then, after the baseband signal on each radio frequency link is multiplied by the radio frequency adjustment quantity of the M antenna elements connected with the radio frequency link, the equivalent baseband transmission signal on the ijth antenna array connected with the ith radio frequency link is as follows: y1 ^ij (m)＝w ^ij Si (m), m ═ 0,1, … SL-1, where w ^ij Indicating 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, by applying a carrier frequency, and then 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, that is, 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 of each beam ID corresponding to 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. Where the criteria is 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 a pattern sent by the measurement reference symbols and the data symbols in a frequency division mode, at least one OFDM symbol has a measurement beam with at least one antenna group in a direction different from that of the data beam, 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. The criterion can be preset fixed 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 this time, the change period of the multiplexing category can be longer, and notification is not needed in each measurement period; or,

and (4) 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 OFDM symbols with sounding reference symbols, and occupies REs on at least one data OFDM symbol without sounding reference symbols.

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 and 12 subcarriers, where 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

DMRSs

1 and 2 occupy REs on OFDM occupied by CSI1 to CSI4, and occupy at least one RE on OFDM symbols 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 patterns of different demodulation reference signals satisfying the above constraint. In fig. 35(a), different demodulation reference signal ports adopt a frequency division multiplexing scheme. 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 adopt frequency division and/or frequency domain code division multiplexing, but the density of the demodulation reference signals is increased relative to 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 from 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 may be achieved by performing 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 only transmitted on C0, and does not occupy resources in other sounding reference symbols, for example, signals without CSI0 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.

The processing in the embodiment of the invention ensures that the radio frequency wave beam is not changed in the data transmission stage and 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,

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 the result of whether the data beam required to be transmitted currently and the radio frequency beam direction corresponding to the measuring beam conflict or not, 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.

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 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, the fifth type 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;

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,

Wherein,

the second determining unit is specifically configured to: appointing a multiplexing pattern type in advance; or, a group of multiplexing pattern classes are invisibly informed according to 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 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 transmission power of 0 indicated by the first signaling or an OFDM symbol index with transmission power of 0 at the measurement reference symbol port. 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 of the receiving end can be subjected to time domain interpolation;

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.

Particularly, for the first multiplexing mode and the sixth multiplexing mode, the transmission unit patterns thereof satisfy the following characteristics:

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 sounding 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.

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 without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. A method for transmitting a signal, comprising:

a sending end sends at least one of a measurement reference signal and a data signal;

wherein, when the sounding reference signal and the data signal are in the same time domain symbol, the beams of the sounding reference signal and the data signal are the same, or the beams of the sounding reference signal and the data signal belong to the same beam set.

2. The method of claim 1, wherein the relationship between the measurement reference signal and the data signal comprises at least one of:

the measuring reference signal and the data signal are time division multiplexed under the condition that the beam number of the measuring reference signal and the beam number of the data signal do not belong to the same beam number set;

under the condition that the beam direction of the measurement reference signal is different from the beam direction of the data signal, time division multiplexing is carried out on the measurement reference signal and the data signal;

when the beam direction of the sounding reference signal is different from that of the data signal and the sounding reference signal and the data signal are in the same time domain symbol, not transmitting one of the sounding reference signal and the data signal;

and under the condition that the beam direction of the measurement reference signal is the same as that of the data signal, the measurement reference signal and the data signal are subjected to time division multiplexing or frequency division multiplexing.

3. The method of claim 2, wherein said not transmitting one of the sounding reference signal and the data signal comprises:

the OFDM symbol index where data is not transmitted is informed through signaling information.

4. The method of claim 1, wherein the sounding reference signal corresponding to one beam sounding reference port is transmitted on only one OFDM symbol.

5. The method according to claim 1 or 2, characterized in that the measurement reference signal and the data signal satisfy the following characteristics:

the measurement reference signal and the data signal are associated with the same antenna group.

6. The method of claim 1, further comprising:

and a time interval of a preset time exists between the orthogonal frequency division multiplexing OFDM symbols in which the different measurement reference signals are positioned.

7. The method according to any of claims 1-4 or 6, wherein the relationship between the beams of the measurement reference signals and the beams of the data signals comprises at least one of:

the beam of the measurement reference signal is the same as that 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 beam sets.

8. The method of any of claims 1-4 or 6, further comprising:

one antenna index corresponds to only 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.

9. The method according to any one of claims 1-4 or 6, wherein in the case of time division multiplexing of the sounding reference signal and the data signal, the transmitting at least one of the sounding reference signal and the data signal comprises:

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.

10. The method of claim 9, 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.

11. A method of receiving a signal, comprising:

a receiving end receives at least one of a measurement reference signal and a data signal;

12. The method of claim 11, wherein the relationship between the measurement reference signal and the data signal comprises at least one of:

under the condition that the beam number of the measurement reference signal and the beam number of the data signal do not belong to the same beam number set, the measurement reference signal and the data signal are time division multiplexed;

if the beam direction of the sounding reference signal is different from the beam direction of the data signal and the sounding reference signal and the data signal are in the same time domain symbol, not receiving one of the sounding reference signal and the data signal;

13. The method of claim 12, wherein said not receiving one of the sounding reference signal and the data signal comprises:

and receiving signaling information, wherein the signaling information comprises an OFDM symbol index without sending data.

14. The method of claim 11, wherein the sounding reference signal corresponding to one beam sounding reference port is transmitted on only one OFDM symbol.

15. The method according to claim 11 or 12, characterized in that the measurement reference signal and the data signal satisfy the following characteristics:

16. The method of claim 11, further comprising:

17. The method according to any of claims 11-14 or 16, wherein the relationship between the beams of the measurement reference signals and the beams of the data signals comprises at least one of:

the beam of the measurement reference signal is the same as the beam of the data signal;

the beams of the measurement reference signals and the beams of the data signals belong to different sets of beams.

18. The method of any of claims 11-14 or 16, further comprising:

one antenna index corresponds to only one beam on one OFDM symbol;

19. The method according to any one of claims 11-14 or 16, wherein in case of time division multiplexing of the sounding reference signal and the data signal, the receiving at least one of the sounding reference signal and the data signal comprises:

20. The method of claim 19, wherein the sequence generation function of the sounding reference signal comprises a short OFDM symbol index where the sounding reference signal is located, wherein the short OFDM symbol index comprises an index of a short OFDM symbol in a plurality of short OFDM symbols included in one long OFDM symbol.

21. An apparatus for transmitting a signal, comprising:

a first processing unit; wherein,

a first processing unit for transmitting at least one of a measurement reference signal and a data signal;

22. The apparatus of claim 21, wherein the relationship between the measurement reference signal and the data signal comprises at least one of:

under the condition that the beam direction of the measurement reference signal is different from that of the data signal, time division multiplexing is carried out on the measurement reference signal and the data signal;

the beam direction of the measurement reference signal is different from that of the data signal, and one of the measurement reference signal and the data signal is not transmitted under the condition that the measurement reference signal and the data signal are in the same time domain symbol;

23. The apparatus of claim 22, wherein the not transmitting one of the sounding reference signal and the data signal comprises:

the OFDM symbol index for which data is not transmitted is notified through signaling information.

24. The apparatus of claim 21, wherein a sounding reference signal corresponding to one beam sounding reference port is transmitted on only one OFDM symbol.

25. The apparatus of claim 21 or 22, wherein the measurement reference signal and the data signal satisfy the following characteristics:

26. The apparatus of claim 21, further comprising:

and a time interval of a preset time exists between the orthogonal frequency division multiplexing OFDM symbols in which different measurement reference signals are positioned.

27. The apparatus according to any of claims 21-24 or 26, wherein the relationship between the beams of the measurement reference signals and the beams of the data signals comprises at least one of:

28. The apparatus of any one of claims 21-24 or 26, further comprising:

one antenna index corresponds to only one beam on one OFDM symbol;

29. The apparatus according to any of claims 21-24 or 26, wherein in case of time division multiplexing of the sounding reference signal and the data signal, the transmitting at least one of the sounding reference signal and the data signal comprises:

30. The apparatus of claim 29, wherein the sequence generation function of the sounding reference signal comprises a short OFDM symbol index where the sounding reference signal 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.

31. An apparatus for receiving a signal, comprising:

a second processing unit; wherein,

a second processing unit for receiving at least one of a measurement reference signal and a data signal;

32. The apparatus of claim 31, wherein the relationship between the measurement reference signal and the data signal comprises at least one of:

the beam direction of the measurement reference signal is different from the beam direction of the data signal, and one of the measurement reference signal and the data signal is not received under the condition that the measurement reference signal and the data signal are in the same time domain symbol;

and under the condition that the beam direction of the measurement reference signal is the same as that of the data signal, time division multiplexing or frequency division multiplexing is carried out on the measurement reference signal and the data signal.

33. The apparatus of claim 32, wherein the not receiving one of the sounding reference signal and the data signal comprises:

34. The apparatus of claim 31, wherein a sounding reference signal corresponding to one beam sounding reference port is transmitted on only one OFDM symbol.

35. The apparatus of claim 31 or 32, wherein the measurement reference signal and the data signal satisfy the following characteristics:

36. The apparatus of claim 31, further comprising:

37. The apparatus according to any of claims 31-24 or 36, wherein the relationship between the beams of measurement reference signals and the beams of data signals comprises at least one of:

38. The apparatus of any one of claims 31-34 or 36, further comprising:

one antenna index corresponds to only one beam on one OFDM symbol;

39. The apparatus according to any of claims 31-34 or 36, wherein in case of time division multiplexing of the sounding reference signal and the data signal, the receiving at least one of the sounding reference signal and the data signal comprises:

the length of one time domain symbol including the measurement reference signal is smaller than or equal to the length of one time domain symbol including the data signal, and the subcarrier spacing of the measurement reference signal is greater than or equal to the subcarrier spacing of the data signal.

40. The apparatus of claim 39, 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.