WO2019029699A1

WO2019029699A1 - Phase noise estimation method and device

Info

Publication number: WO2019029699A1
Application number: PCT/CN2018/099954
Authority: WO
Inventors: 周涵; 焦淑蓉; 铁晓磊
Original assignee: 华为技术有限公司
Priority date: 2017-08-11
Filing date: 2018-08-10
Publication date: 2019-02-14
Also published as: CN109391571B; CN109391571A

Abstract

Provided in the present application are a phase noise estimation method and device, the method comprising: a terminal device determines a first correspondence relationship between M demodulation reference signal (DMRS) port groups and N phase tracking reference signal (PTRS) ports within a plurality of time periods; the terminal device receives a plurality of PTRSes transmitted by an access network device by means of the N PTRS ports within the plurality of time periods; the terminal device determines an antenna module corresponding to the PTRSes which are received in each time period according to the first correspondence relationship and a second correspondence relationship between the M DMRS port groups and an antenna module of the terminal device; and the terminal device estimates the phase noise of the antenna module corresponding to the received PTRSes. Since each DMRS port group corresponds to at least one PTRS port in multiple time segments, the terminal device may estimate the phase noise of the antenna module corresponding to the DMRS port group, thereby improving the reliability of data transmission.

Description

Phase noise estimation method and device

The present application claims priority to Chinese Patent Application Serial No. JP-A No. No. No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

The present application relates to the field of communications technologies, and in particular, to a phase noise estimation method and device.

Background technique

In wireless communication systems, phase noise (PN) is the noise caused by short-term random fluctuations in the phase of the wireless signal. The phase noise causes the wireless signal to randomly rotate in the time domain, thus bringing the wireless signal in the frequency domain. Common phase error (CPE) and Inter Carrier Interference (ICI), which affect the reception of wireless signals. Phase noise is usually caused by devices such as crystals of terminal equipment and access network equipment. Due to the cost and volume constraints of the terminal equipment, the crystal oscillator parameters used are poor and phase noise is more likely to occur; in contrast, the cost and volume of the access network equipment are not restricted within a certain range. The crystal used is of a higher specification. Therefore, phase noise estimation is usually performed on the antenna module of the terminal device. The antenna module includes at least one physical antenna unit, and each physical antenna unit includes a device such as a crystal oscillator. An important means of phase noise estimation is to add a pilot for phase noise estimation to the wireless signal. This pilot is called Phase Tracking Reference Signal (PTRS).

For example, in the following data transmission, in order to estimate the channel for transmitting wireless signals, the access network device usually carries a Demodulation Reference Signal (DMRS) in the wireless signal. Generally, the DMRS port on the access network device corresponds to the PTRS port, so that the PTRS performs phase noise estimation on the antenna module for receiving the DMRS in the terminal device. The number of PTRS ports is equal to the number of independent crystal oscillators of the terminal device, and the number of DMRS ports depends on the number of data streams that need to be transmitted (a data stream stream, which may also be referred to as a transport layer layer). In a Multiple-Input Multiple-Out (MIMO) transmission mode, an access network device can simultaneously transmit multiple data streams (also referred to as multi-layer transmissions) to a terminal device, each data stream corresponding to at least one DMRS. port. Usually the number of DMRS ports is greater than the number of PTRS ports. Therefore, there may be a problem that the DMRS port does not have a corresponding PTRS port.

In order to solve this technical problem, the prior art provides the following technical solution: FIG. 1 is a time-frequency resource distribution diagram provided by the prior art, as shown in FIG. 1 , wherein the horizontal coordinate axis represents time, with a single symbol (symbol). For the basic time unit, the vertical coordinate axis represents the frequency, with one sub-carrier as the basic frequency unit. The basic combination of time frequency consisting of one subcarrier and one symbol is called a Resource Element (RE). The figure shows the time-frequency resource distribution when transmitting 4 layers of downlink data in the frequency domain of 24 subcarriers in one subframe (including 14 symbols). The downlink control signal is transmitted in the 0th to 1st symbols. The second symbol sends DMRS, and the 4 layers of downlink data requires 4 DMRS ports. For example, DMRS port 0 is used to transmit data stream 0, DMRS port 1 is used to transmit data stream 1, and DMRS port 2 is used to transmit data stream 2, DMRS. Port 3 is used to transport data stream 3. DMRS port 0 and DMRS port 2 adopt frequency division multiplexing, and DMRS port 1 and DMRS port 3 also adopt frequency division multiplexing. DMRS port 0 and DMRS port 1 adopt code division multiplexing, and DMRS port 2 and DMRS port 3 also adopt code division multiplexing. The third symbol to the thirteenth symbol are sent downlink data. Usually PTRS occupies only one subcarrier in frequency, but occupies 11 consecutive symbols in the time domain. PTRS port 0 corresponds to DMRS port 0, and PTRS port 1 corresponds to DMRS port 3. Since DMRS port 0 and DMRS port 1 share one time-frequency resource by code division multiplexing, it is likely to adopt polarization multiplexing mode on the space antenna. DMRS port 0 and DMRS port 1 can be referred to as a DMRS port group. DMRS port 0 and DMRS port 1 are considered to be Spatial Quasi CoLocation (QCL). DMRS port 2 and DMRS port 3 are referred to as a DMRS port group, which are spatial QCLs of each other. Therefore, it can also be considered that PTRS port 0 corresponds to DMRS port 1; PTRS port 1 can also be considered to correspond to DMRS port 2.

In the prior art, there may be cases where the number of PTRS ports is less than the number of DMRS port groups. For example, if the access network device schedules 8-layer downlink data transmission with maximum single-user MIMO, and two or two polarization multiplexing, four DMRS port groups (eight DMRS ports in total) are required to transmit the DMRS. If the terminal device is configured with only two PTRS ports. Therefore, there must be two DMRS port groups that do not have corresponding PTRS ports. Based on this, the phase noise estimation of the antenna modules corresponding to the two DMRS port groups cannot be performed, thereby reducing the reliability of data transmission.

Summary of the invention

The application provides a phase noise estimation method and device. Therefore, it is ensured that phase noise estimation can be performed on the antenna modules corresponding to any DMRS port group, thereby improving the reliability of data transmission.

In a first aspect, the present application provides a phase noise estimation method, including: determining, by a terminal device, a first correspondence between a plurality of M-demodulation reference signal DMRS port groups and N phase tracking reference signals PTRS ports in a plurality of time periods; M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port at any time period. Groups, and the same PTRS port is different in the DMRS port group corresponding to the different time segments; the terminal device receives the plurality of PTRSs that the access network device sends over the plurality of time periods through the N PTRS ports; the terminal device according to the first correspondence, M The second corresponding relationship between the DMRS port group and the antenna module of the terminal device determines an antenna module corresponding to the PTRS received in each time period; wherein the antenna module is configured to receive the DMRS; and the terminal device uses the antenna corresponding to the received PTRS The module performs phase noise estimation.

The beneficial effects of the present application are: since each DMRS port group corresponds to at least one PTRS port in multiple time segments, the terminal device can perform phase noise estimation on the antenna module corresponding to the DMRS port group, thereby improving data transmission reliability. Sex.

Optionally, the first correspondence includes: in multiple time periods

During the time period, the M DMRS port groups have N DMRS port groups corresponding to N PTRS ports in each time period. The N DMRS port groups corresponding to each time segment are different. Time period

The remaining time in the M DMRS port groups during the remaining time period of the time period

DMRS port group and N PTRS ports

One PTRS port corresponds to one.

When the M DMRS port group and the N PTRS ports have the first correspondence, it can be ensured that each DMRS port group corresponds to at least one PTRS port in multiple time segments. Therefore, the terminal device can correspond to the antenna of the DMRS port group. The module performs phase noise estimation, which in turn improves the reliability of data transmission.

Optionally, the terminal device determines a first correspondence between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments, including: the terminal device acquires the number M of DMRS port groups and the PTRS port. The number N; the terminal device determines the first correspondence according to the number M of DMRS port groups and the number N of PTRS ports.

Optionally, the terminal device determines a first correspondence between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in the multiple time segments, where the terminal device acquires the downlink control signal sent by the access network device. The downlink control signaling is used to indicate the first correspondence.

The first correspondence can be effectively determined by the above two alternative methods.

Optionally, the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to the transmission duration of the PTRS corresponding to each time segment.

The following describes the phase noise estimation method on the access network device side, and the effect thereof is similar to the effect of the method related to the first aspect, and details are not described below.

In a second aspect, the present application provides a phase noise estimation method, including: determining, by an access network device, a first correspondence between a plurality of M-demodulation reference signal DMRS port groups and N phase tracking reference signals PTRS ports in a plurality of time periods; Wherein, M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one in any time period. The DMRS port group has different DMRS port groups corresponding to the same PTRS port in different time periods; the access network device sends multiple PTRSs over the plurality of time periods through the N PTRS ports according to the first correspondence.

Optionally, the first correspondence includes: in multiple time periods

During the time period, the M DMRS port groups have N DMRS port groups corresponding to N PTRS ports in each time period. The N DMRS port groups corresponding to each time segment are different. Time period except

DMRS port groups and the N PTRS ports

One PTRS port corresponds to one.

In a third aspect, the present application provides a phase noise estimation method, including: determining, by an access network device, a first correspondence between a plurality of M-demodulation reference signal DMRS port groups and N phase tracking reference signals PTRS ports in a plurality of time periods; Wherein, M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one in any time period. a DMRS port group, and the same PTRS port corresponds to different DMRS port groups in different time periods; the access network device receives multiple PTRSs sent by the terminal device over multiple time periods through N PTRS ports; Corresponding relationship, the second correspondence between the M DMRS port groups and the antenna module of the terminal device, determining an antenna module corresponding to the PTRS received in each time period; wherein the antenna module is used for transmitting the DMRS; and the access network device is receiving the The antenna module corresponding to the PTRS is subjected to phase noise estimation.

The beneficial effects of the present application are: since each DMRS port group corresponds to at least one PTRS port in multiple time segments, the access network device can perform phase noise estimation on the antenna module corresponding to the DMRS port group, thereby improving data transmission. Reliability.

Optionally, the first correspondence includes: in multiple time periods

DMRS port group and N PTRS ports

One PTRS port corresponds to one.

When the M DMRS port group and the N PTRS ports have the first correspondence, each DMRS port group can be ensured to correspond to at least one PTRS port in multiple time segments. Therefore, the access network device can correspond to the DMRS port group. The antenna module performs phase noise estimation, thereby improving the reliability of data transmission.

Optionally, the access network device determines a first correspondence between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in the multiple time segments, where the access network device acquires the uplink sent by the terminal device. Control signaling, the uplink control signaling is used to indicate the first correspondence.

The method for estimating the phase noise of the access network device side is described below, and the effect thereof is similar to that of the third aspect, and will not be described below.

In a fourth aspect, the present application provides a phase noise estimation method, including: determining, by a terminal device, a first correspondence between a plurality of M-demodulation reference signal DMRS port groups and N phase tracking reference signals PTRS ports in a plurality of time periods; M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port at any time period. The DMRS port group corresponding to the same PTRS port is different in different time segments; the terminal device sends multiple PTRSs over multiple time segments through the N PTRS ports according to the first correspondence.

Optionally, the first correspondence includes: in multiple time periods

During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period. The N DMRS port groups corresponding to each time segment are different. Multiple time periods

DMRS port group and N PTRS ports

One PTRS port corresponds to one.

The phase noise estimation device is described below, and the phase noise estimation device can be used to perform the first aspect and the corresponding mode corresponding to the first aspect. The implementation principle and technical effects are similar, and details are not described herein again.

In a fifth aspect, the present application provides a phase noise estimation apparatus, including: a processor, and a receiver coupled to the processor; and a processor, configured to determine M demodulation reference signals DMRS port groups and N phase tracking reference a first correspondence between the signal PTRS ports in a plurality of time periods; wherein M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, first The correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the PTRS port group of the same PTRS port is different in different time periods; the receiver is configured to receive the access network device through the N PTRS ports. The plurality of PTRSs sent in the time period; the processor is further configured to determine, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna modules of the phase noise estimation device, the received in each time period An antenna module corresponding to the PTRS, wherein the antenna module is configured to receive the DMRS, and the processor is further configured to perform phase noise estimation on the antenna module corresponding to the received PTRS.

The phase noise estimation device is described below, and the phase noise estimation device can be used to perform the second aspect and the corresponding alternative manner of the second aspect. The implementation principle and technical effects are similar, and details are not described herein again.

In a sixth aspect, the present application provides a phase noise estimation apparatus, including: a processor, and a transmitter coupled to the processor; and a processor, configured to determine the M demodulation reference signals DMRS port group and the N phase tracking reference a first correspondence between the signal PTRS ports in a plurality of time periods; wherein M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, first The corresponding relationship is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port is different in the DMRS port group corresponding to the different time segments; the access network device passes through the N PTRS ports according to the first correspondence relationship. Multiple PTRSs are sent over the time period.

The phase noise estimation device is described below, and the phase noise estimation device can be used to perform the third aspect and the third aspect, and the implementation principle and technical effects are similar, and details are not described herein again.

In a seventh aspect, the present application provides a phase noise estimation apparatus, including: a processor, and a receiver coupled to the processor; and a processor, configured to determine M demodulation reference signals DMRS port groups and N phase tracking references a first correspondence between the signal PTRS ports in a plurality of time periods; wherein M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, first The correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port corresponds to different DMRS port groups in different time periods; the receiver is configured to receive the terminal device through the N PTRS ports. The plurality of PTRSs sent in the time period; the processor is further configured to determine, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna modules of the terminal device, the PTRS corresponding to the received time period The antenna module is configured to transmit a DMRS, and the processor is further configured to perform phase noise estimation on the antenna module corresponding to the received PTRS.

The phase noise estimation device is described below, and the phase noise estimation device can be used to perform the fourth and fourth alternatives. The implementation principle and technical effects are similar, and are not described herein again.

In an eighth aspect, the present application provides a phase noise estimation apparatus, including: a processor, and a transmitter coupled to the processor; and a processor, configured to determine the M demodulation reference signals DMRS port group and the N phase tracking reference a first correspondence between the signal PTRS ports in a plurality of time periods; wherein M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, first The corresponding relationship is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port is different in the DMRS port group corresponding to the different time segments; the transmitter is configured to pass the N PTRS ports according to the first correspondence relationship. Multiple PTRSs are sent over a period of time.

In a fifth aspect, the present application provides a computer storage medium for storing computer software instructions for use in the terminal device, including a program designed to execute the first aspect described above.

In a sixth aspect, the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the access network device, which includes a program designed to execute the foregoing second aspect.

In a seventh aspect, the present application provides a computer storage medium for storing computer software instructions for use in the access network device, including a program designed to perform the third aspect described above.

In a sixth aspect, the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the terminal device, which includes a program designed to execute the fourth aspect.

In an eighth aspect, the present application provides a computer program product comprising instructions which, when executed by a computer, cause the computer to perform the functions performed by the terminal device in the first aspect and the optional method described above.

In a ninth aspect, the present application provides a computer program product comprising instructions for causing a computer to perform the functions performed by an access network device in the second aspect and the optional method described above when the computer program is executed by a computer .

In a tenth aspect, the present application provides a computer program product comprising instructions for causing a computer to perform the functions performed by an access network device in the third aspect and the optional method described above when the computer program is executed by a computer .

In an eleventh aspect, the application provides a computer program product comprising instructions which, when executed by a computer, cause the computer to perform the functions performed by the terminal device in the above-described first and alternative methods.

In a twelfth aspect, the present application provides a baseband chip for performing the functions performed by a processor in the fifth aspect and the alternative.

In a thirteenth aspect, the present application provides a baseband chip for performing the functions performed by a processor in the sixth aspect and the alternative.

In a fourteenth aspect, the present application provides a baseband chip for performing the functions performed by a processor in the seventh aspect and the alternative.

In a fifteenth aspect, the present application provides a baseband chip for performing the functions performed by a processor in the eighth aspect and the alternative.

In summary, the present application provides a phase noise estimation method and device, and the method includes the terminal device determining a first correspondence between the M DMRS port groups and the N PTRS ports in multiple time segments. The terminal device receives a plurality of PTRSs that the access network device transmits over a plurality of time periods through the N PTRS ports. The terminal device determines the antenna module corresponding to the PTRS received in each time period according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the terminal device. The terminal device performs phase noise estimation on the antenna module corresponding to the received PTRS. Since each DMRS port group corresponds to at least one PTRS port in multiple time segments, the terminal device can perform phase noise estimation on the antenna module corresponding to the DMRS port group, thereby improving the reliability of data transmission.

DRAWINGS

1 is a time-frequency resource distribution diagram provided by the prior art;

2 is a schematic diagram of polarization multiplexing provided by the prior art;

FIG. 3 is a schematic diagram of an application scenario provided by the present application;

4 is a flowchart of a phase noise estimation method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of time-frequency resource distribution according to an embodiment of the present application;

FIG. 6 is a schematic diagram of time-frequency resource distribution according to another embodiment of the present application;

FIG. 7 is a flowchart of a phase noise estimation method according to another embodiment of the present application;

FIG. 8 is a flowchart of a phase noise estimation method according to an embodiment of the present application;

FIG. 9 is a flowchart of a phase noise estimation method according to another embodiment of the present application;

FIG. 10 is a schematic diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure;

FIG. 11 is a schematic diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure;

FIG. 12 is a schematic diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure;

FIG. 17 is a schematic structural diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure.

Detailed ways

The 3rd Generation Partnership Project (3GPP) is designed for the fifth generation of mobile communication technology (5 Generation, 5G) to develop a frequency band of at least 100 Gigahertz (GHz), while the antenna module The phase noise power spectral density increases by 10 times per carrier frequency (eg, from 3 GHz carrier to 30 GHz carrier) by 20 dB (Decibel, DB), which means that the high frequency part of the 5G system will There is a lot of phase noise.

The following line data transmission is taken as an example. In order to eliminate the phase noise of the wireless signal, phase noise estimation of the antenna module of the terminal device is required. Phase noise estimation is typically performed on the antenna module by PTRS. In addition, in order to estimate the channel through which the wireless signal is transmitted, the access network device typically carries the DMRS in the wireless signal. Generally, the DMRS port on the access network device corresponds to the PTRS port, so that the PTRS performs phase noise estimation on the antenna module for receiving the DMRS in the terminal device. That is, the PTRS port needs to be combined with the DMRS port to function. However, in general, the number of PTRS ports and the number of DMRS ports are not the same.

The port refers to an antenna port, which is a port of an antenna module that transmits or receives a signal. The antenna module referred to in this application can be understood as a logical antenna unit, which includes at least one physical antenna unit, and each physical antenna unit. A device including a crystal oscillator, that is, in practical applications, one port may correspond to one physical antenna unit, or may correspond to an antenna array composed of multiple physical antenna units. The above PTRS port refers to an antenna port for transmitting a PTRS. The DMRS port refers to the antenna port used to transmit the DMRS.

Since in most environments, the phase noise is caused by the random phase rotation caused by the imperfection of the carrier signal waveform generated by the crystal oscillator of the terminal device or the access network device, the number of PTRS ports must also be determined by the terminal device and the access network. The number of crystal oscillators that are independent of each other (not related to each other) is determined. In downlink data transmission, the access network device transmits a signal, and the terminal device receives the signal. Due to the cost and volume constraints of the terminal equipment, the crystal oscillator parameters used are poor and phase noise is more likely to occur; in contrast, the cost and volume of the access network equipment are not restricted within a certain range. The crystal oscillator used has a higher specification, and the generated phase random rotation deviation is small, and the influence on the channel estimation is small. Therefore, in order to compensate the phase noise brought by the antenna module of the terminal device, the number of PTRS ports is generally equivalent to the number of independent crystal oscillators in the terminal device. In a 5G communication system, most terminal devices generally set up at most 2 or 4 independent antenna arrays. If the RF module of each antenna array uses a separate crystal oscillator to generate a carrier signal, the corresponding required PTRS port. The number is also 2 or 4. The number of DMRS ports depends on the number of data streams that need to be transmitted. In the MIMO transmission mode. The access network device can simultaneously send multiple data streams to the terminal device, and each data stream corresponds to at least one DMRS port. Usually the number of DMRS ports is greater than the number of PTRS ports. Therefore, there may be a problem that the DMRS port does not have a corresponding PTRS port.

In order to solve this technical problem, the prior art provides a technical solution as shown in FIG. 1. The DMRS port 2 and the DMRS port 3 are referred to as a DMRS port group, which are mutually space QCL. Therefore, it can also be considered that PTRS port 0 corresponds to DMRS port 1; PTRS port 1 can also be considered to correspond to DMRS port 2. The spatial QCL is described in detail. FIG. 2 is a schematic diagram of polarization multiplexing provided by the prior art. As shown in FIG. 2, in multi-layer data transmission, two data streams can adopt polarization multiplexing. Perform spatial multiplexing. Polarization multiplexing means that two data streams experience the same spatial transmission channel, but the antenna elements of one of the data streams are horizontally polarized, and the antenna elements of the other data stream are vertically polarized. Due to different signal polarizations, the two data streams have the same spatial transmission channel but are orthogonal to each other and do not interfere with each other. For such a data stream transmission channel the same data stream, the multiple DMRS ports used can be considered as spatial QCL. In the above figure, data stream 1 and data stream 2, which respectively correspond to two DMRS ports, which are referred to as spatial QCL, and the two DMRS ports constitute one DMRS port group.

However, in the prior art, there may be cases where the number of PTRS ports is less than the number of DMRS port groups. For example, if the access network device schedules the 8-layer downlink data transmission with the maximum single-user MIMO, the access network device can transmit 4 beams, and each beam transmits two data streams in a polarization multiplexing manner, that is, the access network device has a total Four DMRS port groups are configured to send 8 ports of DMRS. If the terminal device is configured with only two PTRS ports. Therefore, there must be two DMRS port groups that do not have corresponding PTRS ports. Based on this, phase noise estimation may not be performed on the antenna modules corresponding to the two DMRS port groups, thereby reducing the reliability of data transmission.

In order to solve this technical problem, the present application provides a phase noise estimation method and apparatus. Specifically, FIG. 3 is a schematic diagram of an application scenario provided by the present application. As shown in FIG. 3, the access network device involved in the present application may be Global System of Mobile communication (GSM) or code division multiple access ( In a Base Transceiver Station (BTS) in the Code Division Multiple Access (CDMA), it may be a base station (NodeB, NB for short) in Wideband Code Division Multiple Access (WCDMA). It may be an evolved base station (eNB), an access point (AP), or a relay station in the LTE network, or may be a 5G network or a base station in the NR, and is not limited herein. Additionally, the terminal device referred to in this application may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing device that is connected to a wireless modem.

The terminal device can communicate with at least one core network via a Radio Access Network (RAN). The terminal device may be a mobile terminal such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device. Exchange voice and/or data with a wireless access network. The terminal device may also be referred to as a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile Station, a Remote Station, an Access Point, and a remote device. A remote terminal, an access terminal, a user terminal, a user agent, or a user equipment are not limited herein.

The MIMO technology can be used for data transmission between the access network device and the terminal device.

Specifically, FIG. 4 is a flowchart of a phase noise estimation method according to an embodiment of the present application. As shown in FIG. 4, the method includes:

Step S401: The terminal device determines a first correspondence between the M DMRS port groups and the N PTRS ports in multiple time segments.

Wherein, M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port the most at any time period. Corresponding to one DMRS port group, and the same PTRS port has different DMRS port groups corresponding to different time segments.

Step S402: The terminal device receives, by the access network device, multiple PTRSs that are sent over multiple time periods through the N PTRS ports.

Step S403: The terminal device determines, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the terminal device, the antenna module corresponding to the PTRS received in each time period; wherein the antenna module is configured to receive DMRS;

Step S404: The terminal device performs phase noise estimation on the antenna module corresponding to the received PTRS.

The step S401 is described in detail below. Each DMRS port in the M DMRS port groups is an antenna port used by the access network device to send the DMRS. Wherein, if the two DMRS ports are spatial QCL, the two DMRS ports can be included in one DMRS port group. Of course, this application does not exclude other port group division methods. Each of the N PTRS ports is an antenna port used by the access network device to transmit the PTRS.

Each time period in this application may be one or more time slot slots, or one or more small-timeslot mini-slots, or one or more Transmission Time Intervals (TTIs), or one Or the number of time domain symbols or one or more subframes, and the like. This application does not limit this.

Since the number of PTRS ports is smaller than the number of DMRS port groups, in order to enable each DMRS port group to have a corresponding PTRS port, the PTRS port is reused in multiple time periods in the present application, so that the DMRS port group is in multiple times. The segment corresponds to at least one PTRS port.

Optionally, from the perspective of the terminal device, the large-scale parameters indicating the channel spatial propagation characteristics, such as the incident angle of the channel corresponding to each DMRS port in the DMRS port group, are considered to be the same. Based on this, it is considered that the antenna modules for receiving DMRS corresponding to these DMRS ports are also the same. When a DMRS port group has a correspondence with a PTRS port, the DMRS port group and the PTRS port are spatial QCL. From the perspective of the terminal device, the channel for transmitting the PTRS corresponding to the PTRS port is the same as the channel for transmitting the DMRS corresponding to the DMRS port group, that is, the channel corresponding to the PTRS port and the channel corresponding to the DMRS port group. It is the same on a large-scale parameter indicating the spatial propagation characteristics of a channel, such as an incident angle (also referred to as an Arrival Angle) of a channel. Based on this, it is considered that the antenna module for receiving the DMRS corresponding to the DMRS port group is the same as the antenna module for receiving the PTRS corresponding to the PTRS port. In summary, when a DMRS port group has a corresponding relationship with a PTRS port, it can be understood that the same antenna module can simultaneously receive the PTRS transmitted by the PTRS port and the DMRS transmitted by the DMRS port group (or DMRS port) corresponding to the PTRS port. And the channel used by the DMRS port group to transmit the DMRS and the channel used by the PTRS port to transmit the PTRS are the same. Therefore, it can be considered that the phase noise obtained by the phase noise estimation based on the PTRS is the phase noise generated by the antenna module receiving the DMRS port group, thereby performing phase noise estimation on the antenna module.

Optionally, the first correspondence includes: in multiple time periods

DMRS port group and N PTRS ports

One PTRS port corresponds to one. among them,

Indicates that the symbol is rounded down.

For example, if there are 4 DMRS port groups and 2 PTRS ports, 4 DMRS port groups are: DMRS port group 0, DMRS port group 1, DMRS port group 2, and DMRS port group 3. The two PTRS ports are respectively PTRS port 0 and PTRS port 1. In the first time period, DMRS port group 0 corresponds to PTRS port 0, and DMRS port group 1 corresponds to PTRS port 1. In the second time period, DMRS port group 2 corresponds to PTRS port 0, and DMRS port group 3 corresponds to PTRS port 1. In this way, the four DMRS port groups are each corresponding to the PTRS port. In fact, in the present application, the correspondence between the DMRS port group and the PTRS port can be changed, that is, the DMRS port group corresponding to the PTRS port can be different in different time periods.

For example, if there are 5 DMRS port groups and 2 PTRS ports, 5 DMRS port groups are: DMRS port group 0, DMRS port group 1, DMRS port group 2, DMRS port group 3, and DMRS port group 4. 2 The PTRS ports are PTRS port 0 and PTRS port 1, respectively. In the first time period, DMRS port group 0 corresponds to PTRS port 0, and DMRS port group 1 corresponds to PTRS port 1. In the second time period, DMRS port group 2 corresponds to PTRS port 0, and DMRS port group 3 corresponds to PTRS port 1. In the third time period, DMRS port group 4 corresponds to PTRS port 0.

Optionally, the first correspondence relationship is periodically changed. For example, if there are 5 DMRS port groups and 2 PTRS ports, as in the above example, in the third time period of the above multiple time periods, DMRS port group 4 and PTRS port 0 correspond. Next, in the next set of multiple time periods, starting with

PTRS port

1 and 5 DMRS port groups. That is, in the first time period of the next group of multiple time segments, DMRS port group 0 corresponds to PTRS port 1, and DMRS port group 1 corresponds to PTRS port 0. In the second time period, DMRS port group 2 corresponds to PTRS port 1, and DMRS port group 3 corresponds to PTRS port 0. In the third time period, DMRS port group 4 corresponds to PTRS port 1. By analogy, the first correspondence changes periodically. This application does not limit how the first correspondence relationship changes periodically.

Optionally, the first correspondence includes: the M DMRS port groups respectively correspond to the at least one PTRS port in the M time segments.

For example, if there are 4 DMRS port groups and 2 PTRS ports, 4 DMRS port groups are: DMRS port group 0, DMRS port group 1, DMRS port group 2, and DMRS port group 3. The two PTRS ports are respectively PTRS port 0 and PTRS port 1. In the first time period, DMRS port group 0 corresponds to PTRS port 0, and in the second time period, DMRS port group 1 corresponds to PTRS port 1. In the third time period, DMRS port group 2 corresponds to PTRS port 0, and in the fourth time period, DMRS port group 3 corresponds to PTRS port 1.

The first correspondence is not limited in this application, as long as it makes the PTRS port correspond to at most one DMRS port group in any time period, and the PTRS port group corresponding to the same PTRS port in different time periods is different.

Optionally, step S401 includes: the terminal device acquires the number M of DMRS port groups and the number N of PTRS ports; and the terminal device determines the first correspondence according to the number M of DMRS port groups and the number N of PTRS ports.

Specifically, the terminal device may receive the number M of DMRS port groups and the number N of PTRS ports directly sent by the access network device device. Alternatively, the terminal device may receive the number M of DMRS port groups and the number N of PTRS ports forwarded by other devices. Further, the terminal device calculates

And determining the plurality of time periods

DMRS port group and N PTRS ports

One PTRS port corresponds to one.

Optionally, the terminal device determines the first correspondence according to the number M of DMRS port groups and the number N of PTRS ports, including: the terminal devices respectively correspond to the at least one PTRS port of the M DMRS port groups in the M time segments.

The present application does not limit how the terminal device determines the first correspondence according to the number M of DMRS port groups and the number N of PTRS ports.

Optionally, the step S401 includes: the terminal device receives the downlink control signaling sent by the access network device, where the downlink control signaling is used to indicate the first correspondence.

Specifically, the downlink control signaling is a system information block (SIB) message, a radio resource control (RRC) control signaling, a downlink control information (Downlink Control Information, DCI), and a media access control. - Control Element (Media-Access Control-Control Element, MAC-CE).

Step S402 will be described in detail below: in fact, the DMRS port continuously transmits DMRS, and the PTRS port also continuously transmits PTRS. Just because the correspondence between the DMRS port group and the PTRS port is changing, it is said to transmit multiple PTRSs in multiple time periods. For example, when the DMRS port group 0 corresponds to the PTRS port 0 in the first time period, the PTRS sent by the PTRS port 0 in the first time period may be used to perform phase noise estimation on the antenna module corresponding to the DMRS port group 0. In the first time period, the DMRS port group 1 corresponds to the PTRS port 0, and the PTRS sent by the PTRS port 0 in the first time period may be used to perform phase noise estimation on the antenna module corresponding to the DMRS port group 1.

Optionally, the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to the transmission duration of the PTRS corresponding to each time segment. For example, in the first time period, the DMRS port group 1 corresponds to the PTRS port 0, and the duration of the correspondence in the first time period is greater than or equal to the transmission duration of the PTRS in the first time period.

Optionally, the durations of the correspondence between the M DMRS port groups and the N PTRS ports in each time period are the same.

The following describes the step S403 in detail: as described above, from the perspective of the terminal device, the antenna modules for receiving the DMRS corresponding to the DMRS ports of the same DMRS port group are also the same, and the DMRS port is used for receiving the DMRS. The antenna modules correspond one-to-one. Based on this, the terminal device may determine, according to the first correspondence relationship and the second correspondence, the antenna module corresponding to the PTRS received in each time period. For example, DMRS port group 0 includes DMRS port 0 and DMRS port 1, which correspond to antenna module 0 of the terminal device, and DMRS port group 0 corresponds to PTRS port 0, thereby knowing that PTRS port 0 and antenna module of terminal device are 0. correspond. Therefore, the PTRS transmitted by the PTRS port 0 can be used to perform phase noise estimation on the antenna module 0.

In the step S404, the phase noise estimation method provided by the prior art may be used in the present application, which is not limited in this application.

Optionally, in the MIMO transmission process, depending on the priority of the data flow or the channel condition, there may be a fixed correspondence between a part of the PTRS port and a part of the DMRS port group, and the remaining PTRS port and the remaining DMRS port group. The corresponding relationship is the first correspondence described in the application.

In summary, the present application provides a phase noise estimation method, including: determining, by a terminal device, a first correspondence relationship between M DMRS port groups and N PTRS ports in multiple time segments. The terminal device receives a plurality of PTRSs that the access network device transmits over a plurality of time periods through the N PTRS ports. The terminal device determines the antenna module corresponding to the PTRS received in each time period according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the terminal device. The terminal device performs phase noise estimation on the antenna module corresponding to the received PTRS. Since each DMRS port group corresponds to at least one PTRS port in multiple time segments, the terminal device can perform phase noise estimation on the antenna module corresponding to the DMRS port group, thereby improving the reliability of data transmission.

Further, the above phase noise estimation method will be described in detail below with reference to an example:

Example 1: FIG. 5 is a schematic diagram of a time-frequency resource distribution according to an embodiment of the present disclosure. As shown in FIG. 5, two DMRS port groups and one PTRS port have the first corresponding relationship, wherein the DMRS port group 0 includes DMRS port 0 and DMRS port 1, which are spatial QCL. The DMRS port group 1 includes DMRS port 2 and DMRS port 3, which are spatial QCL. In subframe 0, DMRS port group 0 corresponds to PTRS port 0, and in subframe 1, DMRS port group 1 corresponds to PTRS port 0. Based on this, on subframe 0, the PTRS sent by PTRS port 0 can perform phase noise estimation on the antenna module corresponding to DMRS port group 0. On subframe 1, the PTRS sent by PTRS port 0 can perform phase noise estimation on the antenna module corresponding to DMRS port group 1.

Example 2: FIG. 6 is a schematic diagram of time-frequency resource distribution according to another embodiment of the present application. As shown in FIG. 6 , four DMRS ports (when a DMRS port group includes only one DMRS port, a DMRS port group is equivalent to a DMRS port. And having the first correspondence relationship with the two PTRS ports, wherein, in the subframe 0, the DMRS port 0 corresponds to the PTRS port 0, the DMRS port 1 corresponds to the PTRS port 1, and the subframe 1 (subframe) 1 Upper, DMRS port 2 corresponds to PTRS port 0, and DMRS port 3 corresponds to PTRS port 1. Based on this, in subframe 0, the PTRS sent by PTRS port 0 can perform phase noise estimation on the antenna module corresponding to DMRS port 0, and the PTRS sent by PTRS port 1 can perform phase noise estimation on the antenna module corresponding to DMRS port 1. On subframe 1, the PTRS sent by PTRS port 0 can perform phase noise estimation on the antenna module corresponding to DMRS port 2. The PTRS sent by the PTRS port 1 can perform phase noise estimation on the antenna module corresponding to the DMRS port 3.

In summary, the above two examples further illustrate that each DMRS port group corresponds to at least one PTRS port in multiple time segments. Therefore, the terminal device can perform phase noise estimation on the antenna module corresponding to the DMRS port group, thereby improving data. The reliability of the transmission.

It should be noted that, in the prior art, when one DMRS port group corresponds to one PTRS port, and the DMRS port group includes multiple DMRS ports, even in the same DMRS port group, one of the terminal devices may exist. The channel quality corresponding to the DMRS port is good, and the channel quality corresponding to other DMRS ports is poor. If the PTRS port is fixed to correspond to a DMRS port in the DMRS port group, and the channel quality corresponding to the DMRS port is poor, the terminal device considers that the channel corresponding to the PTRS port is the same as the channel corresponding to the DMRS port, and therefore the PTRS port The corresponding channel has a problem of poor quality. In the present application, when the DMRS port group includes only one DMRS port, that is, each DMRS port independently corresponds to one PTRS port, the above problem can be overcome.

The present application further provides a phase noise estimation method, the method comprising: the access network device determining a first correspondence between the M DMRS port groups and the N PTRS ports in a plurality of time periods; wherein M is a positive integer greater than 1. N is a positive integer greater than or equal to 1, and M is greater than N. The DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port is in the same The DMRS port groups corresponding to different time segments are different; the access network device sends multiple PTRSs over multiple time segments through the N PTRS ports according to the first correspondence.

Optionally, the first correspondence includes: in multiple time periods

DMRS port group and N PTRS ports

One PTRS port corresponds to one.

The method for determining the first correspondence between the M DMRS port groups and the N PTRS ports in the multiple time segments may refer to the method for determining the first correspondence relationship between the M and N according to the terminal device, which is not described in this application. .

For the phase noise estimation method provided by the embodiment of the present application, reference may be made to the method and the technical content and effect of the method corresponding to FIG. 4 , and details are not described herein again.

Specifically, FIG. 7 is a flowchart of a phase noise estimation method according to another embodiment of the present application. As shown in FIG. 7, the method includes:

Step S701: The terminal device determines a first correspondence between the M DMRS ports and the N PTRS ports in multiple time segments.

Wherein, M is a positive integer greater than 1, and N is a positive integer greater than or equal to 1, and M is greater than N. The first correspondence is used to make the PTRS port correspond to at most one DMRS port in any time period, and the same PTRS port is different. The DMRS port corresponding to the time period is different.

Step S702: The terminal device receives, by the access network device, multiple PTRSs sent over multiple time periods through the N PTRS ports.

Step S703: The terminal device determines, according to the first correspondence, the second correspondence between the M DMRS ports and the antenna module of the terminal device, the antenna module corresponding to the PTRS received in each time period; wherein the antenna module is configured to receive the DMRS ;

Step S704: The terminal device performs phase noise estimation on the antenna module corresponding to the received PTRS.

This embodiment differs from the corresponding embodiment of FIG. 4 in that there is no concept of a DMRS port group in this embodiment. The beneficial effect of the embodiment of the present application is that each DMRS port corresponds to at least one PTRS port in multiple time periods. When the channel corresponding to one DMRS port has a problem of poor transmission quality, it does not affect the channel quality of other DMRS ports, and thus does not affect the phase noise estimation of the antenna modules corresponding to other DMRS ports. Thereby improving the reliability of data transmission.

FIG. 8 is a flowchart of a phase noise estimation method according to an embodiment of the present disclosure. As shown in FIG. 8, the method includes:

Step S801: The access network device determines a first correspondence between the M DMRS port groups and the N PTRS ports in multiple time segments.

Wherein, M is a positive integer greater than 1, N is a positive integer greater than or equal to 1, and M is greater than N, and the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one in any time period. A DMRS port group, and the same PTRS port corresponds to different DMRS port groups in different time periods.

Step S802: The access network device receives a plurality of PTRSs sent by the terminal device over a plurality of time periods through the N PTRS ports.

Step S803: The access network device determines, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna modules of the terminal device, the antenna module corresponding to the PTRS received in each time period; wherein, the antenna module is used by the antenna module Sending a DMRS;

Step S804: The access network device performs phase noise estimation on the antenna module corresponding to the received PTRS.

The step S801 is described in detail below. Each DMRS port in the M DMRS port groups is an antenna port used by the terminal device to send the DMRS. Wherein, if the two DMRS ports are spatial QCL, the two DMRS ports can be included in one DMRS port group. Of course, this application does not exclude other port group division methods. Each of the N PTRS ports is an antenna port used by the terminal device to transmit the PTRS.

Each time period in this application may be one or more time slot slots, or one or more small-timeslot mini-slots, or one or more TTIs, or one or more time domain symbol numbers or One or more subframes, etc. This application does not limit this.

Optionally, from the perspective of the access network device, the channels for transmitting DMRS corresponding to the DMRS ports of the same DMRS port group are considered to be the same, that is, the incident angle of the channel corresponding to each DMRS port in the DMRS port group indicates channel space. The large-scale parameters of the propagation characteristics are the same. Based on this, it is considered that the antenna modules for transmitting DMRS corresponding to these DMRS ports are also the same. When a DMRS port group has a correspondence with a PTRS port, the DMRS port group and the PTRS port are spatial QCL. From the perspective of the access network device, the channel for transmitting the PTRS corresponding to the PTRS port is the same as the channel for transmitting the DMRS corresponding to the DMRS port group, that is, the channel corresponding to the PTRS port corresponds to the DMRS port group. The channel is the same on a large-scale parameter indicating the spatial propagation characteristics of the channel, such as an incident angle (also referred to as an Arrival Angle) of the channel. Based on this, it is considered that the antenna module for transmitting the DMRS corresponding to the DMRS port group is the same as the antenna module for transmitting the PTRS corresponding to the PTRS port. In summary, when a DMRS port group has a corresponding relationship with a PTRS port, it can be understood that the same antenna module can simultaneously transmit the PTRS transmitted to the PTRS port and the DMRS transmitted by the DMRS port group (or the DMRS port) corresponding to the PTRS port. And the channel used by the DMRS port group to transmit the DMRS and the channel used by the PTRS port to transmit the PTRS are the same. Therefore, it can be considered that the phase noise obtained by the phase noise estimation based on the PTRS is the phase noise generated by the antenna module receiving the DMRS port group, thereby performing phase noise estimation on the antenna module.

Optionally, the first correspondence includes: in multiple time periods

DMRS port group and N PTRS ports

One PTRS port corresponds to one. among them,

Indicates that the symbol is rounded down.

Optionally, the foregoing first correspondence may refer to the implementation manner of the terminal device side, which is not described herein again.

Optionally, the step S801 includes: the access network device receives the uplink control signaling sent by the terminal device, where the uplink control signaling is used to indicate the first correspondence.

Optionally, the uplink control signaling may be control signaling on a physical uplink control channel (PUCCH), or may be control signaling on a physical uplink shared channel (PUSCH). .

In summary, the present application provides a phase noise estimation method, including: an access network device determines a first correspondence between M DMRS port groups and N PTRS ports in multiple time segments. The access network device receives a plurality of PTRSs that the terminal device transmits over a plurality of time periods through the N PTRS ports. The access network device determines, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna modules of the terminal device, the antenna module corresponding to the PTRS received in each time period. The access network device performs phase noise estimation on the antenna module corresponding to the received PTRS. Since each DMRS port group corresponds to at least one PTRS port in multiple time segments, the access network device can perform phase noise estimation on the antenna module corresponding to the DMRS port group, thereby improving the reliability of data transmission.

It should be noted that, in the prior art, when a DMRS port group corresponds to one PTRS port, and the DMRS port group includes multiple DMRS ports, even in the same DMRS port group, the access network device may exist. The channel quality corresponding to one DMRS port is good, and the channel quality corresponding to other DMRS ports is poor. If the PTRS port is fixed to correspond to a DMRS port in the DMRS port group, and the channel quality of the DMRS port is the same, the access network device considers that the channel corresponding to the PTRS port is the same as the channel corresponding to the DMRS port. The channel corresponding to the PTRS port has a problem of poor quality. In the present application, when the DMRS port group includes only one DMRS port, that is, each DMRS port independently corresponds to one PTRS port, the above problem can be overcome.

Specifically, FIG. 9 is a flowchart of a phase noise estimation method according to another embodiment of the present application. As shown in FIG. 9, the method includes:

Step S901: The access network device determines a first correspondence between the M DMRS ports and the N PTRS ports in multiple time segments.

Step S902: The access network device receives multiple PTRSs sent by the terminal device over multiple time periods through the N PTRS ports.

Step S903: The access network device determines, according to the first correspondence, the second correspondence between the M DMRS ports and the antenna module of the terminal device, the antenna module corresponding to the PTRS received in each time period; wherein the antenna module is used for Send DMRS;

Step S904: The access network device performs phase noise estimation on the antenna module corresponding to the received PTRS.

This embodiment differs from the corresponding embodiment of FIG. 8 in that there is no concept of a DMRS port group in this embodiment. The beneficial effect of the embodiment of the present application is that each DMRS port corresponds to at least one PTRS port in multiple time periods. When the channel corresponding to one DMRS port has a problem of poor transmission quality, it does not affect the channel quality of other DMRS ports, and thus does not affect the phase noise estimation of the antenna modules corresponding to other DMRS ports. Thereby improving the reliability of data transmission.

The present application provides a phase noise estimation method, including: determining, by a terminal device, a first correspondence between a plurality of M-demodulation reference signal DMRS port groups and N phase tracking reference signals PTRS ports in a plurality of time periods; wherein M is greater than 1 A positive integer, where N is a positive integer greater than or equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group at any time, and the same The PTRS port is different in the DMRS port group corresponding to the different time segments; the terminal device sends the multiple PTRSs over the multiple time segments through the N PTRS ports according to the first correspondence.

Optionally, the first correspondence includes: in multiple time periods

During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period. The N DMRS port groups corresponding to each time segment are different. Multiple time periods except

DMRS port group and N PTRS ports

One PTRS port corresponds to one.

The method for determining the first correspondence between the M DMRS port groups and the N PTRS ports in the multiple time segments may refer to the method for determining the first correspondence relationship by using the terminal device, which is not described herein again.

For the phase noise estimation method provided by the embodiment of the present application, reference may be made to the method and the technical content and effect of the method corresponding to FIG. 7 , and details are not described herein again.

FIG. 10 is a schematic diagram of a phase noise estimation apparatus according to an embodiment of the present invention. As shown in FIG. 10, the apparatus includes: a determination module 1001, a receiving module 1002, and an estimation module 1003.

The determining module 1001 is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is greater than or A positive integer equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port Different DMRS port groups corresponding to different time periods;

The receiving module 1002 is configured to receive, by the access network device, multiple PTRSs that are sent by using the N PTRS ports on the multiple time periods;

The determining module 1001 is further configured to determine, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the phase noise estimation device, the PTRS corresponding to the received PTRS in each time period. An antenna module; wherein the antenna module is configured to receive a DMRS;

The estimation module 1003 is configured to perform phase noise estimation on the antenna module corresponding to the received PTRS.

Optionally, the first correspondence includes: in the multiple time periods

During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period, wherein the N DMRS port groups corresponding to the respective time segments are different. In addition to the plurality of time periods

The remaining of the M DMRS port groups during the remaining time period of the time period

DMRS port groups and the N PTRS ports

One PTRS port corresponds to one.

Optionally, the determining module 1001 is specifically configured to: acquire the number M of the DMRS port group and the number N of the PTRS ports; determine the number according to the number M of the DMRS port group and the number N of the PTRS ports. A correspondence.

Optionally, the determining module 1001 is specifically configured to: obtain downlink control signaling sent by the access network device, where the downlink control signaling is used to indicate the first correspondence.

The phase noise estimation device provided by the embodiment of the present application may be used to perform the method steps of the corresponding embodiment of FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 11 is a schematic diagram of a phase noise estimation device according to an embodiment of the present disclosure. As shown in FIG. 11 , the device includes: a determining module 1101 and a sending module 1102.

The determining module 1101 is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is greater than or A positive integer equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port Different DMRS port groups corresponding to different time periods;

The sending module 1102 is configured to send, by using the N PTRS ports, multiple PTRSs on the multiple time periods according to the first correspondence.

Optionally, the first correspondence includes: in the multiple time periods

DMRS port groups and the N PTRS ports

One PTRS port corresponds to one.

The phase noise estimation device provided by the embodiment of the present application may be used to perform the method steps of the foregoing embodiment of the access network device, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

FIG. 12 is a schematic diagram of a phase noise estimation device according to an embodiment of the present disclosure. As shown in FIG. 12, the device includes: a determining module 1201, a receiving module 1202, and an estimating module 1203.

The determining module 1201 is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time periods; where M is a positive integer greater than 1, and N is greater than or A positive integer equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port Corresponding to different DMRS port groups in different time periods;

The receiving module 1202 is configured to receive, by the terminal device, multiple PTRSs that are sent by using the N PTRS ports on the multiple time periods;

The determining module 1201 is further configured to determine, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the terminal device, the antenna module corresponding to the PTRS received in each time period. Wherein the antenna module is configured to send a DMRS;

The estimation module 1203 is configured to perform phase noise estimation on the antenna module corresponding to the received PTRS.

Optionally, the first correspondence includes: in the multiple time periods

DMRS port groups and the N PTRS ports

One PTRS port corresponds to one.

Optionally, the determining module 1201 is specifically configured to: obtain uplink control signaling sent by the terminal device, where the uplink control signaling is used to indicate the first correspondence.

The phase noise estimation device provided by the embodiment of the present application may be used to perform the method steps of the corresponding embodiment of FIG. 8 , and the implementation principle and technical effects thereof are similar, and details are not described herein again.

FIG. 13 is a schematic diagram of a phase noise estimation apparatus according to an embodiment of the present invention. As shown in FIG. 13, the apparatus includes: a determination module 1301 and a transmission module 1302.

The determining module 1301 is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time periods; where M is a positive integer greater than 1, and N is greater than or A positive integer equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port Different DMRS port groups corresponding to different time periods;

The sending module 1302 is configured to send, by using the N PTRS ports, multiple PTRSs on the multiple time periods according to the first correspondence.

Optionally, the first correspondence includes: in the multiple time periods

DMRS port groups and the N PTRS ports

One PTRS port corresponds to one.

The phase noise estimation device provided by the embodiment of the present application may be used to perform the method steps of the foregoing embodiment of the terminal device, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

FIG. 14 is a schematic structural diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure. As shown in FIG. 14, the apparatus includes a processor 1410, and a receiver and transmitter coupled to the processor 1410, respectively; wherein the receiver and transmitter can be integrated to form the transceiver 1420. It can also be two separate physical entities. The device also includes a memory 1430 and an input/output interface 1440. The processor 1410, the transceiver 1420, the memory 1430, and the input/output interface 1440 may constitute an integrated circuit (chip) 1450.

In particular, transceiver 1420 can be coupled to antenna 1460. In the downstream direction, the transceiver 1420 receives the information transmitted by the access network device through the antenna 1460, and transmits the information to the processor 1410 for processing. In the upstream direction, the processor 1410 processes the data of the device and transmits it to the access network device through the transceiver 1420. The apparatus further includes a memory 1440 for storing a program implementing the above method embodiments, the processor 1410 invoking the program to perform part of the operations of the above method embodiments.

The processor 1410 is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is a positive integer greater than or equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group at any time period, and the same The PTRS port is different in the DMRS port group corresponding to different time periods;

The transceiver 1420 is configured to receive, by the access network device, multiple PTRSs that are sent by using the N PTRS ports on the multiple time periods;

The processor 1410 is further configured to determine, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the phase noise estimation device, the PTRS received in each time period. Corresponding antenna module; wherein the antenna module is configured to receive a DMRS;

The processor 1410 is further configured to perform phase noise estimation on the antenna module corresponding to the received PTRS.

Optionally, the first correspondence includes: in the multiple time periods

DMRS port groups and the N PTRS ports

One PTRS port corresponds to one.

Optionally, the processor 1410 is specifically configured to: acquire the number M of the DMRS port group and the number N of the PTRS ports; determine the number according to the number M of the DMRS port group and the number N of the PTRS ports. A correspondence.

Optionally, the processor 1410 is specifically configured to: obtain downlink control signaling sent by the access network device, where the downlink control signaling is used to indicate the first correspondence.

FIG. 15 is a schematic structural diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure. As shown in FIG. 15, the apparatus includes a processor 1510, and a receiver and transmitter coupled to the processor 1510, respectively; wherein the receiver and transmitter can be integrated to form the transceiver 1520. It can also be two separate physical entities. The device also includes a memory 1530 and an input/output interface 1540. The processor 1510, the transceiver 1520, the memory 1530, and the input/output interface 1540 may constitute an integrated circuit (chip) 1550.

In particular, transceiver 1520 can be coupled to antenna 1560. In the downstream direction, the transceiver 1520 receives the information transmitted by the terminal device through the antenna 1560 and transmits the information to the processor 1510 for processing. In the upstream direction, the processor 1510 processes the data of the device and transmits it to the terminal device through the transceiver 1520. The device further includes a memory 1540 for storing a program implementing the above method embodiment, and the processor 1510 invoking the program to perform part of the operations of the above method embodiments.

The processor 1510 is configured to determine a first correspondence between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is a positive integer greater than or equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group at any time period, and the same The PTRS port is different in the DMRS port group corresponding to different time periods;

The transceiver 1520 is configured to send, by using the N PTRS ports, multiple PTRSs on the multiple time periods according to the first correspondence.

Optionally, the first correspondence includes: in the multiple time periods

DMRS port groups and the N PTRS ports

One PTRS port corresponds to one.

FIG. 16 is a schematic structural diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure. As shown in FIG. 16, the apparatus includes a processor 1610, and a receiver and transmitter coupled to the processor 1610, respectively; wherein the receiver and transmitter can be integrated to form the transceiver 1620. It can also be two separate physical entities. The device also includes a memory 1630 and an input/output interface 1640. The processor 1610, the transceiver 1620, the memory 1630, and the input/output interface 1640 may constitute an integrated circuit (chip) 1650.

In particular, transceiver 1620 can be coupled to antenna 1660. In the downstream direction, the transceiver 1620 receives the information transmitted by the terminal device through the antenna 1660 and transmits the information to the processor 1610 for processing. In the upstream direction, the processor 1610 processes the data of the device and transmits it to the terminal device through the transceiver 1420. The apparatus further includes a memory 1640 for storing a program implementing the above method embodiments, the processor 1610 invoking the program to perform part of the operations of the above method embodiments.

The processor 1610 is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is a positive integer greater than or equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group at any time period, and the same The PTRS port corresponds to different DMRS port groups in different time periods;

The transceiver 1620 is configured to receive, by the terminal device, multiple PTRSs that are sent by using the N PTRS ports on the multiple time periods;

The processor 1610 is further configured to determine, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the terminal device, the PTRS received in each time period. An antenna module; wherein the antenna module is configured to send a DMRS;

The processor 1610 is further configured to perform phase noise estimation on the antenna module corresponding to the received PTRS.

Optionally, the first correspondence includes: in the multiple time periods

DMRS port groups and the N PTRS ports

One PTRS port corresponds to one.

Optionally, the processor 1610 is specifically configured to: acquire uplink control signaling sent by the terminal device, where the uplink control signaling is used to indicate the first correspondence.

FIG. 17 is a schematic structural diagram of a phase noise estimation apparatus according to an embodiment of the present disclosure. As shown in FIG. 17, the apparatus includes a processor 1710, and a receiver and transmitter coupled to the processor 1710, respectively; wherein the receiver and transmitter can be integrated to form a transceiver 1720. It can also be two separate physical entities. The device also includes a memory 1730 and an input/output interface 1740. The processor 1710, the transceiver 1720, the memory 1730, and the input/output interface 1740 may constitute an integrated circuit (chip) 1750.

In particular, transceiver 1720 can be coupled to antenna 1760. In the downstream direction, the transceiver 1720 receives the information transmitted by the access network device through the antenna 1760 and transmits the information to the processor 1710 for processing. In the upstream direction, the processor 1710 processes the data of the device and transmits it to the access network device through the transceiver 1720. The device further includes a memory 1740 for storing a program implementing the above method embodiment, and the processor 1710 invoking the program to perform part of the operations of the above method embodiments.

The processor 1710 is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is greater than or A positive integer equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port Different DMRS port groups corresponding to different time periods;

The transceiver 1720 is configured to send, by using the N PTRS ports, multiple PTRSs on the multiple time periods according to the first correspondence.

Optionally, the first correspondence includes: in the multiple time periods

DMRS port groups and the N PTRS ports

One PTRS port corresponds to one.

The phase noise estimation device provided in the embodiment of the present application may be used to perform the method steps of the foregoing embodiment of the terminal device, and the implementation principle and technical effects thereof are similar, and details are not described herein again.

Claims

A phase noise estimation method, comprising:

The terminal device determines a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in a plurality of time periods; wherein, M is a positive integer greater than 1, and N is a positive value greater than or equal to 1. An integer, and M is greater than N, the DMRS port group includes at least one DMRS port, where the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port is in different time segments. The corresponding DMRS port group is different;

Receiving, by the terminal device, a plurality of PTRSs that are sent by the access network device over the multiple time periods by using the N PTRS ports;

Determining, by the terminal device, the antenna module corresponding to the PTRS received in each time period according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the terminal device, where The antenna module is configured to receive a DMRS;

The terminal device performs phase noise estimation on the antenna module corresponding to the received PTRS.
The method of claim 1 wherein said first correspondence comprises: said plurality of time periods
During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period, wherein the N DMRS port groups corresponding to the respective time segments are different. In addition to the plurality of time periods
The remaining of the M DMRS port groups during the remaining time period of the time period
DMRS port groups and the N PTRS ports
One PTRS port corresponds to one.
The method according to claim 1 or 2, wherein the terminal device determines a first correspondence between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in a plurality of time periods, including :

The terminal device acquires the number M of the DMRS port group and the number N of the PTRS ports;

The terminal device determines the first correspondence according to the number M of the DMRS port group and the number N of the PTRS ports.
The method according to claim 1 or 2, wherein the terminal device determines a first correspondence between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in a plurality of time periods, including :

The terminal device receives downlink control signaling sent by the access network device, where the downlink control signaling is used to indicate the first correspondence.
The method according to any one of claims 1-4, wherein the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to each time period. The transmission duration of the PTRS.
A phase noise estimation method, comprising:

The access network device determines a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; wherein, M is a positive integer greater than 1, and N is greater than or equal to 1 a positive integer, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port is different. The DMRS port group corresponding to the time period is different;

And the access network device sends, by using the N PTRS ports, multiple PTRSs on the multiple time periods according to the first correspondence.
The method of claim 6 wherein said first correspondence comprises: said plurality of time periods
During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period, wherein the N DMRS port groups corresponding to the respective time segments are different. In addition to the plurality of time periods
The remaining of the M DMRS port groups during the remaining time period of the time period
DMRS port groups and the N PTRS ports
One PTRS port corresponds to one.
The method according to claim 6 or 7, wherein the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to the PTRS corresponding to each time segment. The length of the transmission.
A phase noise estimation method, comprising:

The access network device determines a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; wherein, M is a positive integer greater than 1, and N is greater than or equal to 1 a positive integer, and M is greater than N, the DMRS port group includes at least one DMRS port, and the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port is different. The time period corresponds to different DMRS port groups;

The access network device receives a plurality of PTRSs sent by the terminal device over the plurality of time periods by using the N PTRS ports;

Determining, by the access network device, the antenna module corresponding to the PTRS received in each time period according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the terminal device; The antenna module is configured to send a DMRS.

The access network device performs phase noise estimation on the antenna module corresponding to the received PTRS.
The method according to claim 9, wherein said first correspondence comprises: said plurality of time periods
During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period, wherein the N DMRS port groups corresponding to the respective time segments are different. In addition to the plurality of time periods
The remaining of the M DMRS port groups during the remaining time period of the time period
DMRS port groups and the N PTRS ports
One PTRS port corresponds to one.
The method according to claim 9 or 10, wherein the access network device determines a first correspondence between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in a plurality of time periods , including:

The access network device receives the uplink control signaling sent by the terminal device, where the uplink control signaling is used to indicate the first correspondence.
The method according to any one of claims 9-11, wherein the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to each time period. The transmission duration of the PTRS.
A phase noise estimation method, comprising:

The terminal device determines a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in a plurality of time periods; wherein, M is a positive integer greater than 1, and N is a positive value greater than or equal to 1. An integer, and M is greater than N, the DMRS port group includes at least one DMRS port, where the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS port is in different time segments. The corresponding DMRS port group is different;

And the terminal device sends, by using the N PTRS ports, multiple PTRSs on the multiple time periods according to the first correspondence.
The method of claim 13 wherein said first correspondence comprises: said plurality of time periods
During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period, wherein the N DMRS port groups corresponding to the respective time segments are different. In addition to the plurality of time periods
The remaining of the M DMRS port groups during the remaining time period of the time period
DMRS port groups and the N PTRS ports
One PTRS port corresponds to one.
The method according to claim 13 or 14, wherein the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to the PTRS corresponding to each time segment. The length of the transmission.
A phase noise estimating apparatus, comprising: a processor, and a receiver coupled to the processor;

The processor is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is greater than Or a positive integer equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, where the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS The port has different DMRS port groups corresponding to different time segments;

The receiver is configured to receive, by the access network device, multiple PTRSs that are sent by using the N PTRS ports on the multiple time periods;

The processor is further configured to determine, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the phase noise estimation device, the PTRS corresponding to each time segment. Antenna module; wherein the antenna module is configured to receive a DMRS;

The processor is further configured to perform phase noise estimation on the antenna module corresponding to the received PTRS.
The device according to claim 16, wherein said first correspondence comprises: said plurality of time periods
During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period, wherein the N DMRS port groups corresponding to the respective time segments are different. In addition to the plurality of time periods
The remaining of the M DMRS port groups during the remaining time period of the time period
DMRS port groups and the N PTRS ports
One PTRS port corresponds to one.
The device according to claim 16 or 17, wherein the processor is specifically configured to:

Obtaining the number M of the DMRS port group and the number N of the PTRS ports;

The first correspondence is determined according to the number M of the DMRS port groups and the number N of the PTRS ports.
The device according to claim 16 or 17, wherein the processor is specifically configured to:

Obtaining downlink control signaling sent by the access network device, where the downlink control signaling is used to indicate the first correspondence.
The device according to any one of claims 16 to 19, wherein the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to each time period. The transmission duration of the PTRS.
A phase noise estimating apparatus, comprising: a processor, and a transmitter coupled to the processor;

The processor is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is greater than Or a positive integer equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, where the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS The port has different DMRS port groups corresponding to different time segments;

The transmitter is configured to send, by using the N PTRS ports, multiple PTRSs on the multiple time periods according to the first correspondence.
The device according to claim 21, wherein said first correspondence comprises: said plurality of time periods
During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period, wherein the N DMRS port groups corresponding to the respective time segments are different. In addition to the plurality of time periods
The remaining of the M DMRS port groups during the remaining time period of the time period
DMRS port groups and the N PTRS ports
One PTRS port corresponds to one.
The device according to claim 21 or 22, wherein the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to the PTRS corresponding to each time segment. The length of the transmission.
A phase noise estimating apparatus, comprising: a processor, and a receiver coupled to the processor;

The processor is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is greater than Or a positive integer equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, where the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS The port corresponds to different DMRS port groups in different time periods;

The receiver is configured to receive, by the terminal device, multiple PTRSs that are sent by using the N PTRS ports on the multiple time periods;

The processor is further configured to determine, according to the first correspondence, the second correspondence between the M DMRS port groups and the antenna module of the terminal device, the antenna corresponding to the PTRS received in each time period a module; wherein the antenna module is configured to send a DMRS;

The processor is further configured to perform phase noise estimation on the antenna module corresponding to the received PTRS.
The device according to claim 24, wherein said first correspondence comprises: said plurality of time periods
During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period, wherein the N DMRS port groups corresponding to the respective time segments are different. In addition to the plurality of time periods
The remaining of the M DMRS port groups during the remaining time period of the time period
DMRS port groups and the N PTRS ports
One PTRS port corresponds to one.
The device according to claim 24 or 25, wherein the processor is specifically configured to:

Acquiring the uplink control signaling sent by the terminal device, where the uplink control signaling is used to indicate the first correspondence.
The device according to any one of claims 24 to 26, wherein the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to each time period. The transmission duration of the PTRS.
A phase noise estimating apparatus, comprising: a processor, and a transmitter coupled to the processor;

The processor is configured to determine a first correspondence relationship between the M demodulation reference signal DMRS port groups and the N phase tracking reference signals PTRS ports in multiple time segments; where M is a positive integer greater than 1, and N is greater than Or a positive integer equal to 1, and M is greater than N, the DMRS port group includes at least one DMRS port, where the first correspondence is used to make the PTRS port correspond to at most one DMRS port group in any time period, and the same PTRS The port has different DMRS port groups corresponding to different time segments;

The transmitter is configured to send, by using the N PTRS ports, multiple PTRSs on the multiple time periods according to the first correspondence.
The device according to claim 28, wherein said first correspondence comprises: said plurality of time periods
During the time period, the M DMRS port groups have N DMRS port groups corresponding to the N PTRS ports in each time period, wherein the N DMRS port groups corresponding to the respective time segments are different. In addition to the plurality of time periods
The remaining of the M DMRS port groups during the remaining time period of the time period
DMRS port groups and the N PTRS ports
One PTRS port corresponds to one.
The device according to claim 28 or 29, wherein the duration of the correspondence between the M DMRS port groups and the N PTRS ports in each time period is greater than or equal to the PTRS corresponding to each time segment. The length of the transmission.