WO2018059458A1 - Indication method and device for quasi-co-location indication information - Google Patents

Abstract

Disclosed are an indication method and device for quasi co-location (QCL) indication information, for realising the diversity of reference signal types and reference signal configuration information of QCL indication. The method comprises: a base station generating reference signal configuration information; according to the reference signal configuration information, the base station performing quasi co-location (QCL) assumption on reference signals, respectively corresponding to at least two antenna ports, among reference signals, so as to generate QCL indication information; and the base station sending the QCL indication information to a terminal.

Description

Quasi-co-location indication information indication method and device

This application claims the priority of the Chinese Patent Application filed on January 5, 2017, the Chinese Patent Office, the application number is 201710008426.5, and the invention is entitled "a method and device for indicating the information of the quasi-co-location indication information", the entire contents of which are incorporated by reference. In this application.

This application claims the priority of the Chinese Patent Application filed on Sep. 30, 2016, the Chinese Patent Application No. 201610872801.6, entitled "A Method and Apparatus for Directing Quasi-Co-location Information", the entire contents of which are incorporated by reference. In this application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and a device for indicating quasi co-location indication information.

Background technique

The Quasi Co-Loacted (QCL) antenna in LTE is a state hypothesis between antenna ports. If one antenna port is quasi-co-located with another antenna port, it means that the terminal can assume that the large-scale characteristics of the signal received from one of the antenna ports (or the radio channel corresponding to the antenna port) are in whole or in part with the other antenna. The large-scale characteristics of the signals received by the ports (or the radio channels corresponding to the antenna ports) are the same.

However, in the prior art, the type of reference signal indicated by the QCL and the configuration information of the reference signal are small, and it is difficult to support the demand for multiple scenarios in the new radio technology (New Radio, NR).

Summary of the invention

It is an object of the present invention to provide a quasi co-location indication information indication method and apparatus to implement diversity of reference signal types and reference signal configuration information indicated by QCL.

The object of the invention is achieved by the following technical solutions:

In a first aspect, the embodiment of the present invention provides a method for indicating a quasi-co-location indication information, including: generating, by a base station, reference signal configuration information, and corresponding to at least two antenna ports of the reference signal according to the reference signal configuration information. The reference signal performs a quasi-co-located QCL hypothesis, generates QCL indication information, and transmits the QCL indication information to the terminal. Wherein, the QCL is a relationship between the ports, and the at least two ports include at least one of the following: at least two ports include a case where the two port numbers are the same, that is, a QCL hypothesis between the day ports having the same port number, or have Antenna ports with different antenna port numbers, or antenna ports with the same antenna port number for transmitting or receiving information at different times, and/or different frequencies, and/or different code domain resources, or with different antenna port numbers at different times Antenna ports for transmitting or receiving information within, and/or between different frequency, and/or different code domain resources. Each reference signal configuration information corresponds to one reference signal, and each reference signal corresponds to at least one antenna port. Therefore, the method provided by the embodiment of the present invention can implement QCL hypothesis for multiple reference signals based on the diversity of reference signal configuration information, and generate QCL indication information, which satisfies the requirements of multiple scenarios in the NR.

In an optional implementation manner, the QCL indication information includes information of the at least two antenna ports. Therefore, the method provided by the embodiment of the present invention can support the QCL hypothesis of the reference signals corresponding to two or more antenna ports, and improve the range of the QCL.

In an optional implementation manner, the QCL indication information further includes that the at least two antenna ports are respectively paired The same parameter in the reference signal, and/or the parameter association between at least two antenna ports, for example, a parameter of one antenna port may be inferred by a parameter of another antenna port, or an parameter of an antenna port The difference from the other antenna port parameter is less than a certain threshold, wherein the parameters are delay spread, Doppler spread, Doppler shift, average delay, average gain, angle of arrival AOA, average AOA, AOA extension The departure angle AOD, the average departure angle AOD, the AOD extension, the correlation parameter of the reception antenna space, the beam parameter for the transmission beam, and the beam parameter of the reception beam, at least one of the resource identifiers.

The AOA, the average AOA, the AOA extension, the AOD, the average AOD, and the AOD extension refer to a decomposition value of different dimensions, or a combination of different dimensional decomposition values; the beam parameters include at least the following: One, precoding matrix, weight number, beam number. The resource identifier includes a channel state information reference signal (CSI-RS) resource identifier, or a channel sounding reference signal (SRS) resource identifier, which is used to indicate a beam on the resource;

The CSI-RS resource identifier is used to indicate that the transmit beam used by the CSI-RS is sent on the corresponding time-frequency resource, and/or the receive beam used by the CSI-RS is received on the corresponding time-frequency resource, where the SRS resource identifier is used for And indicating that the transmit beam used by the SRS is sent on the corresponding time-frequency resource, and/or the receive beam used by the SRS is received on the corresponding time-frequency resource.

Therefore, the embodiment of the present invention realizes multi-dimensional description of characteristics of two quasi-co-located reference signals by extending QCL parameters.

It should be understood that the same parameters herein may be predefined or dynamically adjusted.

In an optional implementation manner, each reference signal configuration information includes an antenna port corresponding to the reference signal, a time domain resource occupied by the reference signal, a frequency domain resource occupied by the reference signal, a scrambling flag of the reference signal, and a reference signal. At least one of the carrier indices. Therefore, the reference signal configuration information in the embodiment of the present invention may include a plurality of different forms, and the reference signal can be defined by using various parameters.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively have different reference signal types; or the reference signals corresponding to the at least two antenna ports respectively have the same reference a signal type and a different reference signal mode; or the reference signals corresponding to the at least two antenna ports respectively have the same reference signal type and the same reference signal mode; wherein the reference signal mode refers to a preset time frequency The time-frequency position of the resource element where the reference signal is located at the resource granularity, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal. Therefore, in the embodiment of the present invention, the combination of the types and modes of the respective reference signals is various, enriching the types of reference signals.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset. Therefore, embodiments of the present invention can implement QCI assumptions for reference signals with estimated phase noise and/or frequency offset and other signals, and reference signals with estimated phase noise and/or frequency offset can have type and other signals. The difference in modes and the manner in which the configuration information of the reference signal for estimating phase noise and/or frequency offset is generated is varied.

In an optional implementation manner, the base station sends the QCL indication information to the terminal, where the base station sends the QCL indication information to the terminal by using a signaling, where the signaling is a semi-static indication or The signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi-co-location indication in the downlink control indication. Therefore, in the embodiment of the present invention, when the base station notifies the QCL message to each terminal, the base station may have multiple implementation manners.

In an optional implementation manner, the at least one QCL indication information corresponds to at least one codeword. Therefore, the method provided by the embodiment of the present invention can be better applied to multi-point cooperative transmission of data.

In an optional implementation manner, the method further includes: the base station sending the QCL indication information to another base station, and therefore, enabling other base stations to learn the specific situation of the QCL indication information.

In a second aspect, the embodiment of the present invention provides a quasi co-location indication information indication method, including: receiving, by a terminal, QCL indication information sent by a base station, and determining, according to the QCL indication information, a reference corresponding to at least two antenna ports that perform QCL hypothesis respectively. signal. Therefore, by using the method provided by the embodiment of the present invention, the terminal can determine the reference signal for performing the QCL hypothesis according to the received QCL indication information, and further determine the same large-scale characteristic of the reference signals. Wherein, the QCL is a relationship between the ports, and the at least two ports include at least one of the following: at least two ports include a case where the two port numbers are the same, that is, a QCL hypothesis between the day ports having the same port number, or have Antenna ports with different antenna port numbers, or antenna ports with the same antenna port number for transmitting or receiving information at different times, and/or different frequencies, and/or different code domain resources, or with different antenna port numbers at different times Antenna ports for transmitting or receiving information within, and/or between different frequency, and/or different code domain resources.

In an optional implementation manner, the QCL information includes information about the at least two antenna ports. Therefore, the method provided by the embodiment of the present invention can support the QCL hypothesis of the reference signals corresponding to two or more antenna ports, and improve the range of the QCL.

In an optional implementation manner, the QCL information further includes the same parameter in the reference signal corresponding to the at least two antenna ports, and/or a parameter association relationship between the at least two antenna ports, for example, The parameter of one antenna port may be inferred by the parameter of another antenna port, or the parameter of one antenna port and the parameter of another antenna port are less than a certain threshold, wherein the parameter is delay spread, Doppler Extension, Doppler shift, average delay, average gain, average AOA, AOA spread, average AOD, AOD spread, correlation parameters of receive antenna space, beam parameters for transmit beams, beam parameters for receive beams, resources At least one of the identities.

The AOA, the average AOA, the AOA extension, the AOD, the average AOD, and the AOD extension refer to decomposition values of different dimensions, or combinations of different dimensional decomposition values. The beam parameters include at least one of the following, a precoding matrix, a weight sequence number, and a beam sequence number. The resource identifier includes a CSI-RS resource identifier, or an SRS resource identifier, used to indicate a beam on the resource. The CSI-RS resource identifier is used to indicate that the transmit beam used by the CSI-RS is sent on the corresponding time-frequency resource, and/or the receive beam used by the CSI-RS is received on the corresponding time-frequency resource, where the SRS resource identifier is used for And indicating that the transmit beam used by the SRS is sent on the corresponding time-frequency resource, and/or the receive beam used by the SRS is received on the corresponding time-frequency resource.

It should be understood that the same parameters herein may be predefined or dynamically adjusted.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively have different reference signal types between the same parameters; or the at least two antenna ports respectively have the same reference signal Having the same reference signal type and different reference signal patterns between the parameters; or the same reference signal type and the same reference signal pattern between the same parameters in the reference signals corresponding to the at least two antenna ports respectively; The reference signal mode refers to a time-frequency position of a resource element where a reference signal in a preset time-frequency resource granularity is located, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal. Therefore, in the embodiment of the present invention, the combination of the types and modes of the respective reference signals is various, enriching the types of reference signals.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset. Therefore, embodiments of the present invention can implement a QCL hypothesis that a reference signal with estimated phase noise and/or frequency offset is compared with other signals, and a reference signal with estimated phase noise and/or frequency offset can have type and other signals. The difference in mode, the terminal can estimate the phase noise and / or frequency according to the use The offset reference signal is subjected to a reference signal of the QCL hypothesis to determine a large-scale characteristic of the reference signal with estimated phase noise and/or frequency offset, thereby estimating phase noise and/or frequency offset.

In an optional implementation, the terminal receives the QCL information sent by the base station, where the terminal receives the QCL information sent by the base station by using the signaling; the signaling is a semi-static indication or a dynamic indication; the signaling is a downlink control. At least one of a physical downlink shared channel resource element mapping and a quasi co-location indication in the indication, or radio resource control, or downlink control indication. In the embodiment of the present invention, when the base station notifies the QCL message to each terminal, the base station may have multiple implementation manners.

In a third aspect, an embodiment of the present invention provides a base station, including: a transceiver; a memory, configured to store an instruction; and a processor connected to the transceiver and the memory, respectively, according to an instruction stored in the memory, Performing the following operations: generating reference signal configuration information, each reference signal configuration information corresponding to one reference signal, each reference signal corresponding to at least one antenna port; and according to the reference signal configuration information, at least two antenna ports of the reference signal The corresponding reference signals are respectively subjected to a quasi-co-located QCL hypothesis to generate QCL indication information, and the QCL indication information is sent to the terminal through the transceiver. Wherein, the QCL is a relationship between the ports, and the at least two ports include at least one of the following: at least two ports include a case where the two port numbers are the same, that is, a QCL hypothesis between the day ports having the same port number, or have Antenna ports with different antenna port numbers, or antenna ports with the same antenna port number for transmitting or receiving information at different times, and/or different frequencies, and/or different code domain resources, or with different antenna port numbers at different times Antenna ports for transmitting or receiving information within, and/or between different frequency, and/or different code domain resources.

In an optional implementation manner, the QCL indication information includes information of the at least two antenna ports.

In an optional implementation manner, the QCL indication information further includes the same parameter in the reference signal corresponding to the at least two antenna ports, and/or a parameter association relationship between the at least two antenna ports, for example, The parameter of one antenna port may be inferred by the parameter of another antenna port, or the parameter of one antenna port and the parameter of another antenna port are less than a certain threshold, wherein the parameter is delay spread, Doppler Le expansion, Doppler shift, average delay, average gain, angle of arrival AOA, average AOA, AOA spread, exit angle AOD, average exit angle AOD, AOD spread, correlation parameters of receive antenna space, for transmit beam The beam parameter is for at least one of a beam parameter of the receiving beam and a resource identifier.

The AOA, the average AOA, the AOA extension, the AOD, the average AOD, and the AOD extension refer to decomposition values of different dimensions, or combinations of different dimensional decomposition values. The beam parameters include at least one of the following, a precoding matrix, a weight sequence number, and a beam sequence number. The resource identifier includes a CSI-RS resource identifier, or an SRS resource identifier, used to indicate a beam on the resource. The CSI-RS resource identifier is used to indicate that the transmit beam used by the CSI-RS is sent on the corresponding time-frequency resource, and/or the receive beam used by the CSI-RS is received on the corresponding time-frequency resource, where the SRS resource identifier is used for And indicating that the transmit beam used by the SRS is sent on the corresponding time-frequency resource, and/or the receive beam used by the SRS is received on the corresponding time-frequency resource.

In an optional implementation manner, each reference signal configuration information includes an antenna port corresponding to the reference signal, a time domain resource occupied by the reference signal, a frequency domain resource occupied by the reference signal, a scrambling flag of the reference signal, and a reference signal. At least one of the carrier indices.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively have different reference signal types; or the reference signals corresponding to the at least two antenna ports respectively have the same reference a signal type and a different reference signal mode; or the reference signals corresponding to the at least two antenna ports respectively have the same reference signal type and the same reference signal mode; wherein the reference signal mode refers to a preset time frequency The time-frequency position of the resource element where the reference signal is located under the resource granularity, and the type of the reference signal includes a demodulation reference signal, a channel shape State information reference signal and beam reference signal.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset.

In an optional implementation manner, the processor is specifically configured to: when the QCL indication information is sent to the terminal, send the QCL indication information to the terminal by using a signaling, where the signaling is semi-static The indication or the dynamic indication; the signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi-co-location indication in the downlink control indication.

In an optional implementation manner, the at least one QCL indication information corresponds to at least one codeword.

In an optional implementation manner, the processor is further configured to: send the QCL indication information to another base station.

A fourth aspect, a terminal, comprising: a transceiver; a memory for storing an instruction; a processor respectively connected to the transceiver and the memory, configured to perform the following operations according to the instruction stored in the memory: The transceiver receives the QCL indication information sent by the base station; and determines, according to the QCL indication information, a reference signal corresponding to each of the at least two antenna ports that perform the QCL hypothesis. In an optional implementation manner, the QCL information includes information about the at least two antenna ports. Wherein, the QCL is a relationship between the ports, and the at least two ports include at least one of the following: at least two ports include a case where the two port numbers are the same, that is, a QCL hypothesis between the day ports having the same port number, or have Antenna ports with different antenna port numbers, or antenna ports with the same antenna port number for transmitting or receiving information at different times, and/or different frequencies, and/or different code domain resources, or with different antenna port numbers at different times Antenna ports for transmitting or receiving information within, and/or between different frequency, and/or different code domain resources.

In an optional implementation manner, the QCL information further includes the same parameter in the reference signal corresponding to the at least two antenna ports, and/or a parameter association relationship between the at least two antenna ports, for example, The parameter of one antenna port may be inferred by the parameter of another antenna port, or the parameter of one antenna port and the parameter of another antenna port are less than a certain threshold, wherein the parameter is delay spread, Doppler Extension, Doppler shift, average delay, average gain, average AOA, AOA spread, average AOD, AOD spread, correlation parameters of receive antenna space, beam parameters for transmit beams, beam parameters for receive beams, resources At least one of the identities.

The AOA, the average AOA, the AOA extension, the AOD, the average AOD, and the AOD extension refer to decomposition values of different dimensions, or combinations of different dimensional decomposition values. The beam parameters include at least one of the following, a precoding matrix, a weight sequence number, and a beam sequence number. The resource identifier includes a CSI-RS resource identifier, or an SRS resource identifier, used to indicate a beam on the resource. The CSI-RS resource identifier is used to indicate that the transmit beam used by the CSI-RS is sent on the corresponding time-frequency resource, and/or the receive beam used by the CSI-RS is received on the corresponding time-frequency resource, where the SRS resource identifier is used for And indicating that the transmit beam used by the SRS is sent on the corresponding time-frequency resource, and/or the receive beam used by the SRS is received on the corresponding time-frequency resource.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively have different reference signal types between the same parameters; or the at least two antenna ports respectively have the same reference signal Having the same reference signal type and different reference signal patterns between the parameters; or the same reference signal type and the same reference signal pattern between the same parameters in the reference signals corresponding to the at least two antenna ports respectively; The reference signal mode refers to a time-frequency position of a resource element where a reference signal in a preset time-frequency resource granularity is located, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset.

In an optional implementation manner, the processor is specifically configured to: when receiving QCL information sent by the base station, receive QCL information that is sent by the base station by using a signaling; the signaling is a semi-static indication or a dynamic indication; The signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi co-location indication in the downlink control indication.

In addition, the embodiment of the present invention further provides a method for determining the number of antenna ports corresponding to the phase noise compensation reference signal, where the base station indicates the common local oscillator information of each antenna port by using predefined or higher layer signaling or downlink control information. The base station indicates the QCL information of each antenna port through the QCL indication information. The base station performs grouping by using the common local oscillation information and the QCL information to determine the number of antenna ports for estimating phase noise and/or frequency offset reference signals. Therefore, the above method can be used to divide the antenna ports of the quasi-co-located common local oscillator into one group, which reduces the complexity of the terminal parsing reference signal.

The embodiment of the present invention further provides a time domain density configuration method for a phase noise compensation reference signal. In a multi-parameter system, a predefined subcarrier interval and a time domain for estimating a phase noise and/or a frequency offset reference signal are provided. a mapping relationship of the density configuration, the base station determines a time domain density configuration for estimating the phase noise and/or the frequency offset reference signal according to the subcarrier spacing, and the terminal may report the suggested time domain of the reference signal according to the estimated frequency offset value. Density configuration, which can be reported periodically or acyclically. The base station can inform the terminal base station of the time domain density configuration of the reference signal employed. Therefore, using the above method, the base station can determine a time domain configuration for estimating a time domain density configuration (ie, a phase noise compensation reference signal) of the phase noise and/or the frequency offset reference signal according to the subcarrier spacing and the feedback of the terminal to satisfy The actual situation of each different scene.

DRAWINGS

FIG. 1 is a schematic diagram of a scenario for cooperative transmission of multiple antenna stations according to an embodiment of the present invention; FIG.

2 is a flowchart of an overview of a method for indicating quasi co-location indication information according to an embodiment of the present invention;

3 is a second flowchart of an overview of a method for indicating quasi-co-location indication information according to an embodiment of the present invention;

4 is a schematic structural diagram of a base station according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The embodiments of the present invention may be used in, but not limited to, a Long Term Evolution (LTE) system and an evolved system thereof. The application scenarios of the embodiments of the present invention include, but are not limited to, Coordinated Multi-Point (COMP). A distributed multi-antenna system composed of an existing Multiple Input Multiple Output (MIMO) technology (including a diversity technique for improving transmission reliability and a multi-stream technology for increasing transmission data rate) and COMP. FIG. 1 is a schematic diagram of a scenario of cooperative transmission of multiple antenna stations. It should be understood that the embodiments of the present invention are applicable to scenarios of a homogeneous network and a heterogeneous network, and are also limited to a transmission point, and may be between a macro base station and a macro base station, a micro base station and a micro base station, and between a macro base station and a micro base station. COMP, for Frequency Division Duplex (Frequency Domain Duplex, FDD) or Time Domain Duplex (TDD) systems are also suitable.

In wireless communication systems, since frequency processing devices such as local oscillators, frequency dividers, and up-and-down inverters are non-ideal devices, the carrier signals output by these devices are not pure, will have phase noise, and will Causes an inherent frequency offset. Specifically, the phase noise power has a direct relationship with the carrier frequency. The relationship is: the phase noise power varies by 20 log(n), and n is a multiple of the carrier frequency increase. This relationship indicates that the carrier frequency is doubled each time, and the phase noise power is increased. Increase by 6dB. The frequency offset is in addition to the natural frequency offset caused by the use of different oscillators, as well as the Doppler shift due to the relative movement between the terminal and the base station. The Doppler shift is also related to the carrier frequency. Under the same relative moving speed, the higher the carrier frequency, the larger the Doppler shift.

Therefore, the effects of phase noise and frequency offset in high frequency and high modulation applications cannot be ignored. In the future evolution wireless system of The 3rd Generation Partnership Project (3GPP), for example, New Radio (NR), high frequency has been incorporated into the adopted spectrum range. Therefore, the phase noise and frequency offset problems need to be incorporated into the problems that the system design needs to solve.

At present, a commonly used scheme in the industry is to insert a reference signal for estimating phase noise and/or frequency offset in the system, but configuration information of a reference signal for estimating phase noise and/or frequency offset in the prior art, and Since the type of reference signal indicated by the QCL and the reference signal configuration information are small, it is difficult to support the demand for multiple scenes in the NR.

Since the phase noise varies randomly in time, the reference signal used to estimate the phase noise generally requires a relatively high time domain density; the phase rotation caused by the frequency offset varies linearly in the time domain, so the frequency offset estimation is referenced. The time domain density requirement of the signal is lower than the reference signal used to estimate the phase noise, so the frequency offset can be corrected using the reference signal used to estimate the phase noise. However, in low-order modulation, the influence of phase noise is small and no estimation is needed. At this time, the reference signal with low time domain density can be configured for frequency offset estimation, which saves the overhead of the reference signal. At the same time, for different antenna ports, if there is a common local oscillator between the antenna ports, the phase noise of the two antenna ports is the same. If not only the common local oscillator but also the QCL between the antenna ports, then the antenna port is The frequency offset is also the same. At this time, the frequency offset and phase noise on the antenna port can be estimated by only transmitting the reference signal on a small number of antenna ports.

If the reference signal used to estimate the phase noise and/or frequency offset cannot be dynamically configured, to accurately estimate the phase noise and frequency offset, the reference signal used to estimate the phase noise and/or frequency offset needs to be always sent in accordance with the highest required configuration. That is, a high time domain density reference signal for phase noise and/or frequency offset estimation is transmitted on each antenna port, but this configuration is expensive and therefore configurable for phase noise and/or frequency The reference signal of the offset estimation has different number of transmitting antenna ports and different time domain intervals in different scenarios to save the overhead of the reference signal.

Further, in the LTE multi-antenna system, different antenna ports and reference signals are defined to distinguish different channels, such as cell-level reference signals, distributed in antenna ports 0 to 3, and multimedia broadcast multicast service single-frequency networks ( The Multicast Broadcast Single Frequency Network (MBSFN) reference signal is distributed on the antenna port 4, and the user-level reference signals are distributed on the antenna port 5 or 7-14 or 107-110. The channel state indication reference signals are distributed on the antenna ports 15-22. on. Reference signals for estimating phase noise and/or frequency offset referred to in this embodiment include, but are not limited to, demodulation pilot, beam pilot, synchronization pilot, channel state indication pilot, phase noise compensation pilot, etc. That is, it can be either an existing pilot or part of an existing pilot or a new pilot.

The existing control information does not include a relationship between reference signals for estimating phase noise and frequency offset corresponding to respective antenna ports, and reference signals for estimating phase noise estimation and/or frequency offset and other Information about the relationship between the reference signals, such as whether it is quasi-co-located, whether it is a eutectic or the like. Embodiments of the present invention mainly discuss configuration information of reference signals, indication methods of QCL indication information, and configurations for phase noise estimation and/or frequency offset reference signals in a wireless communication system.

The reference signal used to estimate phase noise and/or frequency offset in embodiments of the present invention may be referred to as a phase noise compensation reference signal.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to FIG. 2, an embodiment of the present invention provides a method for indicating quasi co-location indication information, where the method includes:

Step 200: The base station generates reference signal configuration information, where each reference signal configuration information corresponds to one reference signal, and each reference signal corresponds to at least one antenna port.

Step 210: The base station performs QCL hypothesis on the reference signal corresponding to at least two antenna ports in the reference signal according to the reference signal configuration information, to generate QCL indication information.

Wherein, the QCL is a relationship between the ports, and the at least two ports include at least one of the following: at least two ports include a case where the two port numbers are the same, that is, a QCL hypothesis between the day ports having the same port number, or have Antenna ports with different antenna port numbers, or antenna ports with the same antenna port number for transmitting or receiving information at different times, and/or different frequencies, and/or different code domain resources, or with different antenna port numbers at different times Antenna ports for transmitting or receiving information within, and/or between different frequency, and/or different code domain resources.

Step 220: The base station sends the QCL indication information to the terminal.

Optionally, the QCL indication information includes information of at least two antenna ports.

Optionally, the QCL indication information further includes the same parameter in the reference signal corresponding to the at least two antenna ports respectively, and/or a parameter association relationship between the at least two antenna ports, for example, the parameter of one antenna port may pass another The parameter inferred from the parameter of the antenna port, or the difference between the parameter of one antenna port and the parameter of the other antenna port is less than a certain threshold, wherein the parameter is delay spread, Doppler spread, Doppler shift, average delay , average gain, angle of arrival (Angle-of-Arrival, AOA), average AOA, AOA extension, Angle of Departure (AOD), average AOD, AOD extension, correlation parameters of the receiving antenna space, for the transmit beam The beam parameter is for at least one of a beam parameter of the receiving beam and a resource identifier.

The AOA, the average AOA, the AOA extension, the AOD, the average AOD, and the AOD extension refer to decomposition values of different dimensions, or combinations of different dimensional decomposition values. The beam parameters include at least one of the following, a precoding matrix, a weight sequence number, and a beam sequence number. The resource identifier includes a CSI-RS resource identifier, or an SRS resource identifier, used to indicate a beam on the resource. The CSI-RS resource identifier is used to indicate that the transmit beam used by the CSI-RS is sent on the corresponding time-frequency resource, and/or the receive beam used by the CSI-RS is received on the corresponding time-frequency resource, where the SRS resource identifier is used for And indicating that the transmit beam used by the SRS is sent on the corresponding time-frequency resource, and/or the receive beam used by the SRS is received on the corresponding time-frequency resource.

It should be understood that the same parameters herein may be predefined. For example, if the phase noise compensation reference signal antenna port and the demodulation reference signal antenna port are QCL, the same parameter between the two antenna ports may be Set {delay extension, Doppler spread, Doppler shift, average AOA/AOD, AOA/AOD extension, correlation parameters of receive antenna space, beam parameters for transmit beam, beam parameters for receive beam, resources Identification}. The information of the at least two antenna ports in the QCL indication information may indicate that the antenna port x corresponding to the phase noise compensation reference signal and the antenna port 7 and 8 corresponding to the demodulation reference signal perform a QCL hypothesis, or an antenna port corresponding to the phase noise compensation reference signal. y, the antenna port 9, 10 corresponding to the demodulation reference signal performs QCL hypothesis, or the antenna port x corresponding to the phase noise compensation reference signal and the antenna port y perform QCL hypothesis, or the antenna port 7 and the antenna port 8 corresponding to the demodulation reference signal Perform QCL hypotheses, or antenna ports QCL at different times on antenna port 7, and/or different frequencies, and/or code domains.

For step 200, optionally, each reference signal configuration information includes an antenna port corresponding to the reference signal, a time domain resource occupied by the reference signal, a frequency domain resource occupied by the reference signal, a scrambling flag of the reference signal, and a carrier of the reference signal. At least one of the indexes. These reference signal configuration information may or may not be sent to the terminal.

For example, the base station side configures configuration information of the phase noise compensation reference signal and configuration information of a Demodulation Reference Signal (DMRS), and the configuration information includes an antenna port corresponding to the reference signal, or a time domain resource occupied by the reference signal, or a reference. The frequency domain resource occupied by the signal, or the scrambling flag of the reference signal, or at least one of the carrier indices of the reference signal.

For example, when the configuration information includes the antenna port corresponding to the reference signal, for example, the antenna port corresponding to the DMRS is 7 to 14, and the antenna port corresponding to the channel state information reference signal is 15 to 22.

Optionally, the antenna port corresponding to the first reference signal mode may be a subset of the antenna port corresponding to the second reference signal mode, and the antenna port corresponding to the first reference signal mode includes m0, m0+1, . . . , m0+n, The antenna antenna port corresponding to the second reference signal mode includes m0, where n is an integer greater than or equal to 1, and m0 is an integer.

Optionally, the number of antenna ports corresponding to each reference signal may be the same or different, for example, the antenna antenna port corresponding to the demodulation reference signal is m0, m0+1, . . . , m0+n, and the phase noise compensation reference signal corresponds to The antenna antenna port is p0, where m0 is an integer and p0 is an integer, which are not equal. The time-frequency resource of the reference signal is the time domain location and the frequency domain location of the reference signal in the bandwidth.

The scrambling flag of the reference signal is used to distinguish the reference signal pilot sequence between different users to distinguish the transmission of different users on the same resource.

The carrier index refers to the diversity of the service requirements in the NR. The diversity of the scenarios may introduce a multi-parameter system. The multi-parameters include the sub-carrier spacing. Then different reference signals may be transmitted on different sub-carriers. An index of subcarriers is required.

Optionally, at least two antenna ports respectively have different reference signal types between corresponding reference signals;

Or the reference signals corresponding to the at least two antenna ports respectively have the same reference signal type and different reference signal patterns;

Or the reference signals corresponding to the at least two antenna ports respectively have the same reference signal type and the same reference signal mode;

The reference signal mode refers to a time-frequency position of a resource element where a reference signal in a preset time-frequency resource granularity is located, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal.

Optionally, the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset.

For example, the phase noise compensated reference signal type may be a demodulation reference signal, a channel state information reference signal, a beam reference signal, or a newly defined reference signal type, but the role is to estimate phase noise and/or frequency offset. The mode of the phase noise compensation reference signal may be the same as the mode of the existing reference signal, or may be different from the existing reference signal, and the number of antenna ports of the phase noise compensation reference signal may have the same or different number of existing reference signals. The antenna port number of the phase noise compensation reference signal may be the same as or different from the antenna port number corresponding to the existing reference signal, where the reference signal pattern is the time frequency of the resource element of the reference signal at a certain time-frequency resource granularity. position.

For another example, the phase noise compensation reference signal can have multiple modes to be applied to complex and variable services and scenarios in the NR. For example, when the user is in a high frequency and high speed scene, the phase noise compensation reference signal is used for the accuracy of the phase noise estimation. The time domain density is more dense than in high frequency low speed scenes. If the phase noise compensation reference signal type is the same as the existing reference signal, then the reference signal mode may be different, for example, when the user has a high frequency and high speed scene, their time domain density is different, and the frequency domain density is different. For example, in the case of high-frequency and high-speed scenes of users, their time domain density is the same and the frequency domain density is different.

For step 220, optionally, when the base station sends the QCL indication information to the terminal, the base station sends a QCL indication letter. The information is sent to the terminal through signaling, and the signaling is a semi-static indication or a dynamic indication;

For example, when the channel condition is good, the phase noise is relatively stable, and the reference signal configuration information for the phase noise compensation reference signal is sent using the semi-static indication, and the antenna ports and/or phases corresponding to the phase noise compensation noise reference signal are indicated. The QCL indication information between the antenna port corresponding to the noise compensation noise and the antenna port corresponding to other reference signals. Therefore, the reference signal and signaling overhead can be reduced.

The signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi co-location indication in the downlink control indication.

For example, the signaling is a downlink control indication, and indicates to the terminal a QCL hypothesis relationship between antenna ports corresponding to each reference signal, including antenna port information for performing QCL hypothesis, and may also include a parameter set of the same parameter in the QCL hypothesis, and the parameter set. Including delay spread, Doppler spread, Doppler shift, average delay, average gain, AOA, average AOA, AOA extension, AOD, average AOD, AOD extension, correlation parameters of receive antenna space, for transmit beam The beam parameter is for at least one of a beam parameter of the receive beam and a resource identifier.

The AOA, the average AOA, the AOA extension, the AOD, the average AOD, and the AOD extension refer to decomposition values of different dimensions, or combinations of different dimensional decomposition values. The beam parameters include at least one of the following, a precoding matrix, a weight sequence number, and a beam sequence number. The resource identifier includes a CSI-RS resource identifier, or an SRS resource identifier, used to indicate a beam on the resource. The CSI-RS resource identifier is used to indicate that the transmit beam used by the CSI-RS is sent on the corresponding time-frequency resource, and/or the receive beam used by the CSI-RS is received on the corresponding time-frequency resource, where the SRS resource identifier is used for And indicating that the transmit beam used by the SRS is sent on the corresponding time-frequency resource, and/or the receive beam used by the SRS is received on the corresponding time-frequency resource.

Optionally, the at least one QCL indication information corresponds to the at least one codeword.

When multi-site cooperatively transmits data, the total number of transmission layers is generally greater than one layer, and thus generally corresponds to one or more codewords, and the mapping relationship between the codewords and the transmission site may be at least one of the following: each code The word corresponds to one site, or each codeword corresponds to multiple sites, or multiple codewords correspond to one site, and no limitation is imposed herein. In a specific implementation process, one site corresponds to at least one QCL indication information, one QCL indication information may correspond to one codeword, one QCL indication may also correspond to two codewords, and multiple QCL indication information may correspond to multiple codewords.

Optionally, the base station transmits the QCL indication information to other base stations.

Referring to FIG. 3, an embodiment of the present invention provides a method for indicating quasi co-location indication information, where the method includes:

Step 300: The terminal receives the QCL indication information sent by the base station.

Step 310: The terminal determines, according to the QCL indication information, a reference signal corresponding to each of the at least two antenna ports that perform the QCL hypothesis.

Optionally, the QCL information includes information of at least two antenna ports. The QCL is a relationship between the ports, and the at least two ports include at least one of the following cases: at least two ports include the case where the two port numbers are the same, that is, the QCL hypothesis between the day ports having the same port number, or have different antennas An antenna port of a port number, or an antenna port having the same antenna port number for transmitting or receiving information at different times, and/or different frequencies, and/or different code domain resources, or having different antenna port numbers at different times, and / Antenna ports for transmitting or receiving information within different frequency and/or different code domain resources.

Optionally, the QCL information further includes the same parameter in the reference signal corresponding to the at least two antenna ports, and/or a parameter association relationship between the at least two antenna ports. For example, the parameter of one antenna port may pass through another antenna. The parameter inferred from the parameter of the port, or the difference between the parameter of one antenna port and the parameter of the other antenna port is less than a certain threshold, wherein the parameter is delay spread, Doppler spread, Doppler shift, average delay, Average gain, average AOA, AOA extension, average AOD, AOD extension, correlation parameter of the receiving antenna space, beam parameters for the transmitting beam, beam parameters for the receiving beam, and at least one of the resource identifiers.

The AOA, the average AOA, the AOA extension, the AOD, the average AOD, and the AOD extension refer to decomposition values of different dimensions, or combinations of different dimensional decomposition values. The beam parameters include at least one of the following, a precoding matrix, a weight sequence number, and a beam sequence number. The resource identifier includes a CSI-RS resource identifier, or an SRS resource identifier, used to indicate a beam on the resource. The CSI-RS resource identifier is used to indicate that the transmit beam used by the CSI-RS is sent on the corresponding time-frequency resource, and/or the receive beam used by the CSI-RS is received on the corresponding time-frequency resource, where the SRS resource identifier is used for And indicating that the transmit beam used by the SRS is sent on the corresponding time-frequency resource, and/or the receive beam used by the SRS is received on the corresponding time-frequency resource.

Optionally, the reference signals corresponding to the at least two antenna ports respectively have different reference signal types between the same parameters;

Or the same reference signal type and different reference signal modes between the same parameters in the reference signals corresponding to the at least two antenna ports respectively;

Or the same reference signal type and the same reference signal mode between the same parameters in the reference signals corresponding to the at least two antenna ports respectively;

The reference signal mode refers to a time-frequency position of a resource element where the reference signal is located at a preset time-frequency resource granularity, and the reference signal type includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal.

Optionally, the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset.

When the step 310 is performed, the terminal receives the QCL information that is sent by the base station by using the signaling, and the signaling is a semi-static indication or a dynamic indication, where the signaling is a downlink control indication, or a radio resource control, or a physical downlink shared channel resource in the downlink control indication. At least one of an element mapping and a quasi co-location indication.

The embodiment of the invention provides a method for determining the number of antenna ports corresponding to the phase noise compensation reference signal. The scenarios available for the method include, but are not limited to, COMP.

For convenience of explanation, it is assumed that for a certain terminal, in a downlink transmission, a total of P antenna ports transmit data, and the antenna port numbers are respectively recorded as Port{n ₀ , n ₁ , ..., n _p , ... n _P-1 } . These P antenna ports do not necessarily use the same local oscillator, assuming M local oscillators, for example from M base stations or M Transmission Receive Point (TRP).

The base station indicates whether each antenna port has a common local oscillator through high layer signaling or control information.

The base station indicates the QCL information corresponding to each antenna port.

In the P antenna ports, if there are L antenna ports satisfying the common local oscillator, and any two of the antenna ports are QCL, the L antenna ports are grouped into one group.

The P antenna ports that will send data to a certain terminal are grouped according to the above principle, that is, the antenna ports in each group share a local oscillator and any two antenna ports are QCL, and if one antenna port does not exist, the antenna port does not exist. When the other antenna ports of the QCL are vibrated, the antenna ports are individually grouped.

The number of antenna ports corresponding to the phase noise compensation reference signal is the same as the number of packets grouped according to the above principle. If the P antenna ports are divided into N groups according to the above principle, the number of antenna ports corresponding to the phase noise compensation reference signal is also N.

For further specific description, the present embodiment takes six data transmission antenna ports as an example, that is, the number of antenna ports for transmitting data to a certain terminal is 6, that is, P=6, and the antenna port numbers are respectively recorded as antenna ports Port{n ₀ , n ₁ , n ₂ , n ₃ , n ₄ , n ₅ }.

Assume that the six antenna ports are from two base stations, corresponding to two local oscillators, denoted as oscillator A and oscillator B, wherein antenna ports n ₀ , n ₁ , n ₂ , n ₃ , n ₄ correspond to oscillator A. Antenna port n ₅ corresponds to oscillator B, and n ₀ , n ₁ are QCL, and n ₂ , n ₃ are QCL.

The base station indicates the antenna ports n ₀ , n ₁ , n ₂ , n ₃ , n ₄ through the high-level signaling or control information, and n ₅ corresponds to another local oscillator. And provide antenna port n ₀ , n ₁ is QCL, n ₂ , n ₃ is the quasi-co-location information of QCL. According to the above scheme, the six antenna antenna ports can be divided into four groups, namely group1{n ₀ , n ₁ }, group2{n ₂ , n ₃ }, group3{n ₄ }, group4{n ₅ }, Then N=4, it can be determined that the number of antenna ports transmitting the phase noise compensation reference signal is 4.

The embodiment of the invention further provides a time domain density configuration method for a phase noise compensation reference signal. The method available scenarios include, but are not limited to, a multi-parameter system including a multi-subcarrier interval, a Cyclic Prefix (CP) length, and a multi-frequency point. The base station determines a time domain density configuration for transmitting the phase noise compensation reference signal according to a modulation order of the transmitted data, a subcarrier interval, or a configuration reported by the terminal. It is assumed that the phase noise compensation reference signal is transmitted every Δ1 symbols in the time domain, and if the phase noise compensation reference signal is continuously transmitted on each symbol, Δl=0.

Under the condition that phase noise estimation is needed, the phase noise compensation reference signal with high time domain density is configured, that is, Δl takes a smaller value, and the phase noise compensation reference signal is used for phase noise and frequency offset estimation at the same time.

A phase noise compensation reference signal with a relatively low time domain density is configured under the condition that phase noise estimation is not required. If a multi-parameter system is supported, the relationship between the subcarrier spacing and the phase noise compensation reference signal mapping method is defined, and the base station according to the subcarrier The interval determines a phase noise compensation reference signal mapping method, and the terminal determines a receiving position of the phase noise compensation reference signal according to the subcarrier spacing. The phase noise compensation reference signal is only used for frequency offset estimation.

To further illustrate, it is assumed that the 2-seed carrier spacing is supported, f _sc =75 kHz and f _sc =60 kHz, respectively, assuming that the subcarrier spacing and phase noise compensation reference signal mapping relationship is defined as follows:

f _sc =75kHz, Δl=5,

f _sc =60kHz, Δl=4,

When the base station subcarrier f _sc = 75kHz intervals, every five symbols transmitted a reference signal phase-noise compensation, the terminal 5 receives symbols every phase noise compensation reference signal; when f _sc = 60kHz subcarrier interval, the base station A phase noise compensation reference signal is transmitted every 4 symbols, and the terminal receives the phase noise compensation reference signal every 4 symbols.

The terminal may also report the proposed phase noise compensation reference signal time domain density configuration Δl according to the estimated frequency offset value, where the reporting period may or may not be fixed.

The base station may notify the phase noise compensation reference signal configuration adopted by the terminal base station by signaling, where the signaling may be RRC signaling and downlink control signaling.

Referring to FIG. 4, an embodiment of the present invention provides a base station, including:

Transceiver 401;

a memory 402, configured to store an instruction;

The processor 403 is connected to the transceiver 401 and the memory 402 respectively, and is configured to: according to the instruction stored by the memory 402, perform the following operations: generating reference signal configuration information, each reference signal configuration information corresponding to a reference signal, Each reference signal corresponds to at least one antenna port; according to the reference signal configuration information, a reference signal corresponding to at least two antenna ports of the reference signal is subjected to a quasi-co-location QCL hypothesis to generate QCL indication information; The indication information is transmitted to the terminal through the transceiver 401.

In an optional implementation manner, the QCL indication information includes information of the at least two antenna ports. Wherein, QCL is a relationship between ports, and the at least two ports include at least one of: at least two ends The port includes the case where the two port numbers are the same, that is, the QCL hypothesis between the day ports with the same port number, or the antenna ports with different antenna port numbers, or the same antenna port number at different times, and/or different frequencies, and / Antenna ports for transmitting or receiving information within different code domain resources, or antenna ports having different antenna port numbers for transmitting or receiving information at different times, and/or different frequencies, and/or different code domain resources.

In an optional implementation manner, the QCL indication information further includes the same parameter in the reference signal corresponding to the at least two antenna ports, and/or a parameter association relationship between the at least two antenna ports, for example, The parameter of one antenna port may be inferred by the parameter of another antenna port, or the parameter of one antenna port and the parameter of another antenna port are less than a certain threshold, wherein the parameter is delay spread, Doppler Le expansion, Doppler shift, average delay, average gain, angle of arrival AOA, average AOA, AOA spread, exit angle AOD, average exit angle AOD, AOD spread, correlation parameters of receive antenna space, for transmit beam The beam parameter is for at least one of a beam parameter of the receiving beam and a resource identifier.

The AOA, the average AOA, the AOA extension, the AOD, the average AOD, and the AOD extension refer to decomposition values of different dimensions, or combinations of different dimensional decomposition values. The beam parameters include at least one of the following, a precoding matrix, a weight sequence number, and a beam sequence number. The resource identifier includes a CSI-RS resource identifier, or an SRS resource identifier, used to indicate a beam on the resource. The CSI-RS resource identifier is used to indicate that the transmit beam used by the CSI-RS is sent on the corresponding time-frequency resource, and/or the receive beam used by the CSI-RS is received on the corresponding time-frequency resource, where the SRS resource identifier is used for And indicating that the transmit beam used by the SRS is sent on the corresponding time-frequency resource, and/or the receive beam used by the SRS is received on the corresponding time-frequency resource.

In an optional implementation manner, each reference signal configuration information includes an antenna port corresponding to the reference signal, a time domain resource occupied by the reference signal, a frequency domain resource occupied by the reference signal, a scrambling flag of the reference signal, and a reference signal. At least one of the carrier indices.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively have different reference signal types; or the reference signals corresponding to the at least two antenna ports respectively have the same reference a signal type and a different reference signal mode; or the reference signals corresponding to the at least two antenna ports respectively have the same reference signal type and the same reference signal mode; wherein the reference signal mode refers to a preset time frequency The time-frequency position of the resource element where the reference signal is located at the resource granularity, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset.

In an optional implementation manner, the processor 403 is specifically configured to: when the QCL indication information is sent to the terminal, send the QCL indication information to the terminal by using signaling, where the signaling is half The static indication or the dynamic indication; the signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi-co-location indication in the downlink control indication.

In an optional implementation manner, the at least one QCL indication information corresponds to at least one codeword.

In an optional implementation manner, the processor 403 is further configured to: send the QCL indication information to another base station.

As shown in FIG. 5, an embodiment of the present invention provides a terminal, including:

Transceiver 501;

a memory 502, configured to store an instruction;

a processor 503, connected to the transceiver 501 and the memory 502, respectively, for storing according to the memory Store the instructions and do the following:

The transceiver 501 receives the QCL indication information sent by the base station, and determines, according to the QCL indication information, a reference signal corresponding to each of the at least two antenna ports that perform the QCL hypothesis.

In an optional implementation manner, the QCL information includes information about the at least two antenna ports. Wherein, the QCL is a relationship between the ports, and the at least two ports include at least one of the following: at least two ports include a case where the two port numbers are the same, that is, a QCL hypothesis between the day ports having the same port number, or have Antenna ports with different antenna port numbers, or antenna ports with the same antenna port number for transmitting or receiving information at different times, and/or different frequencies, and/or different code domain resources, or with different antenna port numbers at different times Antenna ports for transmitting or receiving information within, and/or between different frequency, and/or different code domain resources.

In an optional implementation manner, the QCL information further includes the same parameter in the reference signal corresponding to the at least two antenna ports, and/or a parameter association relationship between the at least two antenna ports, for example, The parameter of one antenna port may be inferred by the parameter of another antenna port, or the parameter of one antenna port and the parameter of another antenna port are less than a certain threshold, wherein the parameter is delay spread, Doppler Extension, Doppler shift, average delay, average gain, average AOA, AOA spread, average AOD, AOD spread, correlation parameters of receive antenna space, beam parameters for transmit beams, beam parameters for receive beams, resources At least one of the identities.

The AOA, the average AOA, the AOA extension, the AOD, the average AOD, and the AOD extension refer to decomposition values of different dimensions, or combinations of different dimensional decomposition values. The beam parameters include at least one of the following, a precoding matrix, a weight sequence number, and a beam sequence number. The resource identifier includes a CSI-RS resource identifier, or an SRS resource identifier, used to indicate a beam on the resource. The CSI-RS resource identifier is used to indicate that the transmit beam used by the CSI-RS is sent on the corresponding time-frequency resource, and/or the receive beam used by the CSI-RS is received on the corresponding time-frequency resource, where the SRS resource identifier is used for And indicating that the transmit beam used by the SRS is sent on the corresponding time-frequency resource, and/or the receive beam used by the SRS is received on the corresponding time-frequency resource.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively have different reference signal types between the same parameters; or the at least two antenna ports respectively have the same reference signal Having the same reference signal type and different reference signal patterns between the parameters; or the same reference signal type and the same reference signal pattern between the same parameters in the reference signals corresponding to the at least two antenna ports respectively; The reference signal mode refers to a time-frequency position of a resource element where a reference signal in a preset time-frequency resource granularity is located, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal.

In an optional implementation manner, the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset.

In an optional implementation, the processor 503 is specifically configured to: when receiving the QCL information sent by the base station, receive the QCL information that is sent by the base station by using the signaling; the signaling is a semi-static indication or a dynamic indication; The signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi co-location indication in the downlink control indication.

Therefore, the method provided by the embodiment of the present invention can implement QCL hypothesis for multiple reference signals based on the diversity of reference signal configuration information, and generate QCI indication information, which satisfies the requirements of multiple scenarios in the NR. Embodiments of the present invention can implement QCI assumptions for reference signals with estimated phase noise and/or frequency offset and other signals, and reference signals with estimated phase noise and/or frequency offset can have types and modes with other signals. The difference is different, and the manner in which the configuration information of the reference signal for estimating the phase noise and/or the frequency offset is generated is various. Terminal can be used according to The phase noise and/or frequency offset reference signal is estimated to perform a QCL hypothetical reference signal to determine a large-scale characteristic of the reference signal with estimated phase noise and/or frequency offset, thereby estimating phase noise and/or frequency offset.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the invention without departing from the spirit and scope of the embodiments of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims (70)

1. A quasi co-location indication information indication method, comprising:

   The base station generates reference signal configuration information, each reference signal configuration information corresponds to one reference signal, and each reference signal corresponds to at least one antenna port;

   The base station performs a quasi-co-location QCL hypothesis on the reference signal corresponding to at least two antenna ports in the reference signal according to the reference signal configuration information, to generate QCL indication information;

   The base station sends the QCL indication information to the terminal.
2. The method of claim 1 wherein said QCL indication information comprises information of said at least two antenna ports.
3. The method according to claim 1 or 2, wherein the at least two antenna ports refer to antenna ports having different antenna port numbers, or have the same antenna port number at different times, and/or different frequencies, and / or antenna port for sending or receiving information in different code domain resources.
4. The method according to any one of claims 1-3, wherein the QCL indication information further comprises a parameter association relationship between the at least two antenna ports.
5. The method according to any one of claims 1-4, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is a delay Expansion, Doppler spread, Doppler shift, average delay, average gain, angle of arrival AOA, average AOA, AOA spread, exit angle AOD, average exit angle AOD, AOD spread.
6. The method according to any one of claims 1 to 4, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is average Delay, delay spread, Doppler shift, Doppler spread, average gain, correlation parameters of receive antenna space.
7. The method according to any one of claims 1 to 4, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is Doppler Le frequency shift, Doppler expansion.
8. The method according to any one of claims 1-4, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is delay spread, and Puller spread, Doppler shift, average delay, average gain, angle of arrival AOA, average AOA, AOA spread, exit angle AOD, average exit angle AOD, AOD spread.
9. The method according to any one of claims 1-4, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is an average delay, when Delay spread, Doppler shift, Doppler spread, average gain, correlation parameters of the receive antenna space.
10. The method according to any one of claims 1-4, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is a Doppler shift , Doppler expansion.
11. The method according to any one of claims 1 to 10, wherein each reference signal configuration information comprises an antenna port corresponding to the reference signal, a time domain resource occupied by the reference signal, a frequency domain resource occupied by the reference signal, and a reference signal. The scrambling flag is at least one of a carrier index of the reference signal.
12. The method according to any one of claims 1 to 11, wherein the reference signals corresponding to the at least two antenna ports respectively have different reference signal types;

    Or the reference signals corresponding to the at least two antenna ports respectively have the same reference signal type and different Reference signal mode;

    Or the reference signals corresponding to the at least two antenna ports respectively have the same reference signal type and the same reference signal mode;

    The reference signal mode refers to a time-frequency position of a resource element where a reference signal in a preset time-frequency resource granularity is located, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal.
13. The method according to any one of claims 1 to 12, wherein the reference signals respectively corresponding to the at least two antenna ports comprise reference signals for estimating phase noise and/or frequency offset.
14. The method according to any of the preceding claims, wherein the reference signals respectively corresponding to the at least two antenna ports comprise a reference signal and a demodulation reference signal for estimating phase noise and/or frequency offset.
15. The method according to claim 13 or 14, wherein the QCL indication information further comprises a set of antenna port information corresponding to the demodulation reference signal, and the set of antenna port information corresponding to the demodulation reference signal comprises demodulation One or more antenna port information corresponding to the reference signal;

    The QCL indication information further includes one antenna port information corresponding to a reference signal for estimating phase noise and/or frequency offset.
16. The method according to claim 15, wherein the number of antenna ports of the reference signal for estimating phase noise and/or frequency offset is equal to the number of first antenna port groups;

    The first antenna port group includes at least one antenna port for transmitting data, and the antenna port of the at least two transmit data in the first antenna port group including at least two antenna ports for transmitting data has a QCL relationship. There is no QCL relationship between antenna ports that transmit data belonging to different first antenna port groups.
17. The method according to any one of claims 1 to 16, wherein the base station sends the QCL indication information to the terminal, including:

    The base station sends the QCL indication information to the terminal by using a signaling, where the signaling is a semi-static indication or a dynamic indication;

    The signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi co-location indication in the downlink control indication.
18. The method of any of claims 1-17, wherein the at least one QCL indication information corresponds to at least one codeword.
19. The method of any of claims 1 to 18, further comprising:

    The base station transmits the QCL indication information to other base stations.
20. A quasi co-location indication information indication method, comprising:

    The terminal receives the QCL indication information sent by the base station;

    The terminal determines, according to the QCL indication information, a reference signal corresponding to each of the at least two antenna ports that perform the QCL hypothesis.
21. The method of claim 20 wherein said QCL information comprises information of said at least two antenna ports.
22. The method according to claim 20 or 21, wherein the at least two antenna ports refer to antenna ports having different antenna port numbers, or have the same antenna port number at different times, and/or different frequencies, and / or antenna port for sending or receiving information in different code domain resources.
23. The method according to any one of claims 20 to 22, wherein the QCL indication information further comprises a parameter association relationship between the at least two antenna ports.
24. The method according to any one of claims 20 to 23, wherein the QCL information further comprises the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is a delay spread At least one of Doppler spread, Doppler shift, average delay, average gain, average AOA, AOA spread, average AOD, AOD extension.
25. The method according to any one of claims 20 to 23, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is average Delay, delay spread, Doppler shift, Doppler spread, average gain, correlation parameters of receive antenna space.
26. The method according to any one of claims 20 to 23, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is Doppler Le frequency shift, Doppler expansion.
27. The method according to any one of claims 20 to 23, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is delay spread, and Puller spread, Doppler shift, average delay, average gain, angle of arrival AOA, average AOA, AOA spread, exit angle AOD, average exit angle AOD, AOD spread.
28. The method according to any one of claims 20 to 23, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is an average delay, when Delay spread, Doppler shift, Doppler spread, average gain, correlation parameters of the receive antenna space.
29. The method according to any one of claims 20 to 23, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is a Doppler shift , Doppler expansion.
30. The method according to any one of claims 20 to 29, wherein the reference signals corresponding to the at least two antenna ports respectively have different reference signal types between the same parameters;

    Or the same reference signal type and different reference signal modes between the same parameters in the reference signals corresponding to the at least two antenna ports respectively;

    Or the same reference signal type and the same reference signal mode between the same parameters in the reference signals corresponding to the at least two antenna ports respectively;

    The reference signal mode refers to a time-frequency position of a resource element where a reference signal in a preset time-frequency resource granularity is located, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal.
31. The method according to any one of claims 20 to 30, wherein the reference signals respectively corresponding to the at least two antenna ports comprise reference signals for estimating phase noise and/or frequency offset.
32. The method according to claim 31, wherein the reference signals corresponding to the at least two antenna ports respectively include reference signals and demodulation reference signals for estimating phase noise and/or frequency offset.
33. The method according to claim 30 or 31, wherein the QCL indication information further comprises a set of antenna port information corresponding to the demodulation reference signal, and the set of antenna port information corresponding to the demodulation reference signal comprises demodulation One or more antenna port information corresponding to the reference signal;

    The QCL indication information further includes one antenna port information corresponding to a reference signal for estimating phase noise and/or frequency offset.
34. The method according to claim 33, wherein the number of antenna ports of the reference signal for estimating phase noise and/or frequency offset is equal to the number of first antenna port groups;

    The first antenna port group includes at least one antenna port for transmitting data, and the antenna port of the at least two transmit data in the first antenna port group including at least two antenna ports for transmitting data has a QCL relationship. There is no QCL relationship between antenna ports that transmit data belonging to different first antenna port groups.
35. The method according to any one of claims 20 to 34, wherein the terminal receives the QCL information sent by the base station, including:

    Receiving, by the terminal, QCL information sent by the base station by using signaling;

    The signaling is a semi-static indication or a dynamic indication;

    The signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi co-location indication in the downlink control indication.
36. A base station, comprising:

    transceiver;

    a memory for storing instructions;

    a processor, connected to the transceiver and the memory, respectively, for performing the following operations according to the instructions stored in the memory:

    Generating reference signal configuration information, each reference signal configuration information corresponding to one reference signal, each reference signal corresponding to at least one antenna port;

    Determining a QCL indication information by performing a quasi-co-location QCL hypothesis on a reference signal corresponding to at least two antenna ports of the reference signal according to the reference signal configuration information;

    The QCL indication information is sent to the terminal through the transceiver.
37. The base station according to claim 36, wherein said QCL indication information comprises information of said at least two antenna ports.
38. The base station according to claim 36 or 37, wherein said at least two antenna ports refer to antenna ports having different antenna port numbers, or have the same antenna port number at different times, and/or different frequencies, and / or antenna port for sending or receiving information in different code domain resources.
39. The base station according to any one of claims 36 to 38, wherein the QCL indication information further comprises a parameter association relationship between the at least two antenna ports.
40. The base station according to any one of claims 36 to 39, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is a delay spread, and the Puller spread, Doppler shift, average delay, average gain, angle of arrival AOA, average AOA, AOA spread, exit angle AOD, average exit angle AOD, AOD spread.
41. The base station according to any one of claims 36 to 39, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is average Delay, delay spread, Doppler shift, Doppler spread, average gain, correlation parameters of receive antenna space.
42. The base station according to any one of claims 36 to 39, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is Doppler Le frequency shift, Doppler expansion.
43. The base station according to any one of claims 36 to 39, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is delay spread, and more Puller spread, Doppler shift, average delay, average gain, angle of arrival AOA, average AOA, AOA spread, exit angle AOD, average exit angle AOD, AOD spread.
44. The base station according to any one of claims 36 to 39, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is an average delay, when Extended extension, Doppler Frequency shift, Doppler spread, average gain, correlation parameters of the receive antenna space.
45. The base station according to any one of claims 36 to 39, wherein the same parameter in the reference signals corresponding to the at least two antenna ports is predefined, wherein the parameter is a Doppler shift , Doppler expansion.
46. The base station according to any one of claims 36 to 45, wherein each reference signal configuration information comprises an antenna port corresponding to the reference signal, a time domain resource occupied by the reference signal, a frequency domain resource occupied by the reference signal, and a reference signal. The scrambling flag is at least one of a carrier index of the reference signal.
47. The base station according to any one of claims 36 to 46, wherein the reference signals corresponding to the at least two antenna ports respectively have different reference signal types;

    Or the reference signals corresponding to the at least two antenna ports respectively have the same reference signal type and different reference signal patterns;

    Or the reference signals corresponding to the at least two antenna ports respectively have the same reference signal type and the same reference signal mode;

    The reference signal mode refers to a time-frequency position of a resource element where a reference signal in a preset time-frequency resource granularity is located, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal.
48. The base station according to any one of claims 36 to 47, wherein the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset.
49. The base station according to claim 48, wherein the reference signals corresponding to the at least two antenna ports respectively include reference signals and demodulation reference signals for estimating phase noise and/or frequency offset.
50. The base station according to claim 48 or 49, wherein the QCL indication information further comprises a set of antenna port information corresponding to the demodulation reference signal, and the set of antenna port information corresponding to the demodulation reference signal comprises demodulation One or more antenna port information corresponding to the reference signal;

    The QCL indication information further includes one antenna port information corresponding to a reference signal for estimating phase noise and/or frequency offset.
51. The base station according to claim 50, wherein the number of antenna ports of the reference signal for estimating phase noise and/or frequency offset is equal to the number of first antenna port groups;

    The first antenna port group includes at least one antenna port for transmitting data, and the antenna port of the at least two transmit data in the first antenna port group including at least two antenna ports for transmitting data has a QCL relationship. There is no QCL relationship between antenna ports that transmit data belonging to different first antenna port groups.
52. The base station according to any one of claims 36 to 51, wherein the processor is specifically configured to:

    When the QCL indication information is sent to the terminal, the QCL indication information is sent to the terminal by using a signaling, where the signaling is a semi-static indication or a dynamic indication;

    The signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi co-location indication in the downlink control indication.
53. The base station according to any one of claims 36 to 52, wherein the at least one QCL indication information corresponds to at least one codeword.
54. The base station according to any one of claims 36 to 53, wherein the processor is further configured to:

    The QCL indication information is sent to other base stations.
55. A terminal, comprising:

    transceiver;

    a memory for storing instructions;

    a processor, connected to the transceiver and the memory, respectively, for performing the following operations according to the instructions stored in the memory:

    Receiving, by the transceiver, QCL indication information sent by the base station;

    Determining, according to the QCL indication information, a reference signal corresponding to each of the at least two antenna ports that perform the QCL hypothesis.
56. The terminal of claim 55, wherein the QCL information comprises information of the at least two antenna ports.
57. The terminal according to claim 55 or 56, wherein the at least two antenna ports refer to antenna ports having different antenna port numbers, or have the same antenna port number at different times, and/or different frequencies, and / or antenna port for sending or receiving information in different code domain resources.
58. The terminal according to any one of claims 55 to 57, wherein the QCL indication information further includes a parameter association relationship between the at least two antenna ports.
59. The terminal according to any one of claims 55-58, wherein the QCL information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is a delay extension At least one of Doppler spread, Doppler shift, average delay, average gain, average AOA, AOA spread, average AOD, AOD extension.
60. The terminal according to any one of claims 55 to 58, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is average Delay, delay spread, Doppler shift, Doppler spread, average gain, correlation parameters of receive antenna space.
61. The terminal according to any one of claims 55 to 58, wherein the QCL indication information further includes the same parameter in the reference signals respectively corresponding to the at least two antenna ports, wherein the parameter is Doppler Le frequency shift, Doppler expansion.
62. The terminal according to any one of claims 55 to 58, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is delay spread, and Puller spread, Doppler shift, average delay, average gain, angle of arrival AOA, average AOA, AOA spread, exit angle AOD, average exit angle AOD, AOD spread.
63. The terminal according to any one of claims 55 to 58, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is an average delay, when Delay spread, Doppler shift, Doppler spread, average gain, correlation parameters of the receive antenna space.
64. The terminal according to any one of claims 55 to 58, wherein the same parameter in the reference signal corresponding to the at least two antenna ports is predefined, wherein the parameter is a Doppler shift , Doppler expansion.
65. The terminal according to any one of claims 55 to 64, wherein the reference signals corresponding to the at least two antenna ports respectively have different reference signal types between the same parameters;

    Or the same reference signal type and different reference signal modes between the same parameters in the reference signals corresponding to the at least two antenna ports respectively;

    Or the same reference signal type and the same reference signal mode between the same parameters in the reference signals corresponding to the at least two antenna ports respectively;

    The reference signal mode refers to a time-frequency position of a resource element where a reference signal in a preset time-frequency resource granularity is located, and the type of the reference signal includes a demodulation reference signal, a channel state information reference signal, and a beam reference signal.
66. The terminal according to any one of claims 55 to 65, wherein the reference signals corresponding to the at least two antenna ports respectively include reference signals for estimating phase noise and/or frequency offset.
67. The terminal according to any one of claims 66, wherein the reference signals respectively corresponding to the at least two antenna ports include a reference signal and a demodulation reference signal for estimating phase noise and/or frequency offset.
68. The terminal according to claim 66 or 67, wherein the QCL indication information further includes a set of antenna port information corresponding to the demodulation reference signal, and the set of antenna port information corresponding to the demodulation reference signal includes demodulation One or more antenna port information corresponding to the reference signal;

    The QCL indication information further includes one antenna port information corresponding to a reference signal for estimating phase noise and/or frequency offset.
69. The terminal according to claim 68, wherein the number of antenna ports of the reference signal for estimating phase noise and/or frequency offset is equal to the number of first antenna port groups;

    The first antenna port group includes at least one antenna port for transmitting data, and the antenna port of the at least two transmit data in the first antenna port group including at least two antenna ports for transmitting data has a QCL relationship. There is no QCL relationship between antenna ports that transmit data belonging to different first antenna port groups.
70. The terminal according to any one of claims 55 to 69, wherein the processor is specifically configured to:

    Receiving QCL information sent by the base station, and receiving QCL information sent by the base station by using signaling;

    The signaling is a semi-static indication or a dynamic indication;

    The signaling is at least one of a downlink control indication, or a radio resource control, or a physical downlink shared channel resource element mapping and a quasi co-location indication in the downlink control indication.

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