Method for transmitting phase tracking reference signal, and electronic device and storage medium

Abstract

Provided in the embodiments of the present application are a method for transmitting a phase tracking reference signal, and an electronic device and a storage medium. The method comprises: using X subcarriers to send, in a first time domain symbol, a demodulation reference signal for a demodulation reference signal port of a physical data channel; and using Y subcarriers to send, in a second time domain symbol, a phase tracking reference signal associated with the demodulation reference signal port, wherein X is an integer greater than 0, Y is an integer greater than 0 and less than or equal to X, and frequency domain positions of the Y subcarriers are a subset of frequency domain positions of the X subcarriers.

Description

Phase tracking reference signal transmission method, electronic device and storage medium TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, for example, to a phase tracking reference signal transmission method, an electronic device and a storage medium. BACKGROUND

[0002] Phase noise is the random change of system output signal phase caused by the action of noise such as random white noise and flicker noise on radio frequency devices. Such change will deteriorate the signal-to-noise ratio (SNR) or error vector magnitude (EVM) at the receiving end, leading to the rise of error code rate, limiting the use of high-order modulation, and thus affecting the system capacity. With the increase of working frequency, especially in the millimeter wave frequency band, the influence of phase noise also increases significantly. In order to cope with this challenge, mobile communication systems need to introduce phase tracking reference signals (PTRS) and phase estimation compensation algorithms. PTRS is associated with the demodulation reference signal port of the demodulation reference signal (DMRS) in the transmission process, and exists in the uplink channel (PUSH) and the downlink channel (PDSCH). How to introduce PTRS and phase estimation compensation algorithms to enable mobile communication systems to effectively reduce the influence of phase noise on system performance and realize high-speed and stable wireless communication services has become a problem to be solved at present. SUMMARY

[0003] The embodiments of the present application provide a phase tracking reference signal transmission method, an electronic device and a storage medium, which are aimed at reducing the influence of phase noise on mobile communication systems, improving the stability of wireless communication services, and improving transmission efficiency.

[0004] The embodiments of the present application provide a phase tracking reference signal transmission method, which is applied to a first node. The method comprises the following steps.

[0005] Sending a demodulation reference signal of a demodulation reference signal port of a physical data channel using X subcarriers on a first time domain symbol;

[0006] Sending a phase tracking reference signal associated with the demodulation reference signal port using Y subcarriers on a second time domain symbol;

[0007] wherein the X is an integer greater than 0, the Y is an integer greater than 0 and less than or equal to the X, and frequency domain locations of the Y subcarriers are a subset of frequency domain locations of the X subcarriers.

[0008] Embodiments of the present application further provide a phase tracking reference signal transmission method, applied to a second node, and the method comprises:

[0009] receiving a demodulation reference signal of a demodulation reference signal port of a physical data channel transmitted by a first node using X subcarriers on a first time domain symbol;

[0010] receiving a phase tracking reference signal associated with the demodulation reference signal port transmitted by the first node using Y subcarriers on a second time domain symbol;

[0011] wherein the X is an integer greater than 0, the Y is an integer greater than 0 and less than or equal to the X, and frequency domain locations of the Y subcarriers are a subset of frequency domain locations of the X subcarriers.

[0012] Embodiments of the present application further provide an electronic device, and the electronic device comprises:

[0013] one or more processors;

[0014] a memory for storing one or more programs;

[0015] when the one or more programs are executed by the one or more processors, the one or more processors implement the phase tracking reference signal transmission method according to any one of the embodiments of the present application.

[0016] Embodiments of the present application further provide a computer readable storage medium, and the computer readable storage medium stores one or more programs, and the one or more programs are executed by one or more processors to implement the phase tracking reference signal transmission method according to any one of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a flow chart of a phase tracking reference signal transmission method according to an embodiment of the present application;

[0018] Fig. 2 is an example diagram of subcarrier location relationship between DMRS and PTRS according to an embodiment of the present application;

[0019] Fig. 3 is another example diagram of subcarrier location relationship between DMRS and PTRS according to an embodiment of the present application;

[0020] Fig. 4 is another example diagram of subcarrier location relationship between DMRS and PTRS according to an embodiment of the present application;

[0021] FIG. 5 is another example of subcarrier position relationship between DMRS and PTRS according to an embodiment of the present application;

[0022] FIG. 6 is another example of subcarrier position relationship between DMRS and PTRS according to an embodiment of the present application;

[0023] FIG. 7 is a schematic diagram of different constellations of 256QAM according to an embodiment of the present application;

[0024] FIG. 8 is a flow chart of another method for transmitting a phase tracking reference signal according to an embodiment of the present application;

[0025] FIG. 9 is a schematic diagram of a device for transmitting a phase tracking reference signal according to an embodiment of the present application;

[0026] FIG. 10 is a schematic diagram of another device for transmitting a phase tracking reference signal according to an embodiment of the present application;

[0027] FIG. 11 is a schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] It should be understood that the specific implementations described herein merely set forth exemplary embodiments of the present application and do not limit the present application in any manner.

[0029] In the following description, the use of suffixes such as "module", "part", or "unit" for elements is merely intended for ease of description and does not have a meaning of its own, and thus, "module", "part", or "unit" can be mixedly used.

[0030] FIG. 1 is a flow chart of a method for transmitting a phase tracking reference signal according to an embodiment of the present application. The present embodiment can be applied to a case of transmitting a phase tracking reference signal, and the method can be performed by a device for transmitting a phase tracking reference signal. The device can be implemented by a software and / or hardware method, and can be generally integrated in a base station or a terminal device. As shown in FIG. 1, the method according to the present embodiment includes the following steps.

[0031] In step 110, a demodulation reference signal of a demodulation reference signal port of a physical data channel is transmitted using X subcarriers on a first time domain symbol.

[0032] The first time domain symbol can be a time domain symbol for transmitting a demodulation reference signal, and the subcarriers on the first time domain symbol for transmitting the demodulation reference signal can be one or more. The demodulation reference signal can be used for transmitting a demodulation reference signal port of a physical data channel, and the subcarriers can be referred to as resource elements (REs).

[0033] In the embodiments of the present application, the first node can transmit a demodulation reference signal corresponding to a demodulation reference signal port of a physical data channel using X subcarriers on the first time domain symbol.

[0034] Step 120, transmitting a phase tracking reference signal associated with the demodulation reference signal port using Y subcarriers on a second time domain symbol; wherein X is an integer greater than 0, Y is an integer greater than 0 and less than or equal to X, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X subcarriers.

[0035] The second time domain symbol can be a time domain symbol different from the first time domain symbol in time domain position, and the frequency domain positions of the subcarriers included in the second time domain symbol can be a subset of the frequency domain positions of the subcarriers of the first time domain symbol.

[0036] Specifically, the first node can also transmit a phase tracking reference signal using Y subcarriers on the second time domain symbol, which can be associated with the demodulation reference signal port of the demodulation reference signal transmitted on the first time domain symbol, and the frequency domain positions of the Y subcarriers can be a subset of the frequency domain positions of the X subcarriers.

[0037] For example, referring to FIG. 2, the first node can transmit a demodulation reference signal of a physical data channel DMRS port 0 to the second node using subcarriers 0 / 2 / 4 / 6 / 8 on the first time domain symbol, and transmit a phase tracking reference signal associated with the DMRS port 0 to the second node using subcarriers 0 / 4 / 8 on the second time domain symbol.

[0038] In some embodiments of the present application, X1 subcarriers of the X subcarriers only transmit a demodulation reference signal, and X2 subcarriers transmit a demodulation reference signal and data, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X1 subcarriers.

[0039] In the embodiments of the present application, the first node only transmits demodulation reference signals on X1 subcarriers of the X subcarriers, for example, only transmits the demodulation reference signals of the demodulation reference signal port, or transmits the demodulation reference signals of the demodulation reference signal port and the demodulation reference signals of other demodulation reference signal ports, and transmits the demodulation reference signals and data on X2 subcarriers of the X subcarriers, for example, the demodulation reference signals and data can include only transmitting the demodulation reference signals of the demodulation reference signal port and the corresponding data, or transmitting the demodulation reference signals of the demodulation reference signal port, the data associated with the demodulation reference signal port, the demodulation reference signals of other demodulation reference signal ports, and the data associated with other demodulation reference signal ports. The data associated with the demodulation reference signal port includes using the same precoding as the demodulation reference signal port for transmitting the demodulation reference signals. The frequency domain positions of the Y subcarriers of the first node for transmitting the phase tracking reference signals associated with the demodulation reference signal port can be a subset of the frequency domain positions of the X1 subcarriers.

[0040] In an exemplary embodiment, referring to FIG. 3, the first node can transmit the demodulation reference signals of the DMRS port 0 of the physical data channel to the second node using subcarriers 0 / 2 / 4 / 6 / 8 on the first time domain symbol, and transmit the phase tracking reference signals associated with the DMRS port 0 to the second node using subcarriers 0 / 4 / 8 on the second time domain symbol. If the demodulation reference signals are only transmitted on subcarriers 0 / 2 / 6 / 8 of the 5 subcarriers, the demodulation reference signals can include only transmitting the demodulation reference signals of the DMRS port 0, or transmitting the demodulation reference signals of the DMRS port 0 and the demodulation reference signals of other demodulation reference signal ports, for example, the demodulation reference signals after precoding processing. When the demodulation reference signals and data are transmitted on the subcarrier 4, the available subcarriers of the phase noise reference signals on the second time domain symbol are a subset of the subcarriers 0 / 2 / 6 / 8, for example, subcarriers 0 and 8. It is worth noting that the full set is a special subset, that is, in some embodiments, the full set can also be used.

[0041] In some embodiments of the present application, X1 subcarriers of the X subcarriers only transmit the demodulation reference signals, X2 subcarriers transmit the demodulation reference signals and data, and at least one of the frequency domain positions of the Y subcarriers is the same as one of the frequency domain positions of the X1 subcarriers.

[0042] In the embodiments of the present application, the first node only transmits demodulation reference signals on X1 subcarriers of the X subcarriers, and transmits the demodulation reference signals and data on X2 subcarriers of the X subcarriers, and at least one of the frequency domain positions of the Y subcarriers of the first node for transmitting the phase tracking reference signals associated with the demodulation reference signal port is the same as one of the frequency domain positions of the X1 subcarriers.

[0043] In an example embodiment, referring to FIG. 4, the first node can send the demodulation reference signal of the physical data channel DMRS port 0 to the second node using subcarriers 0 / 2 / 4 / 6 / 8 on the first time domain symbol, and the first node can send the phase tracking reference signal associated with the DMRS port 0 to the second node using subcarriers 0 / 4 / 8 on the second time domain symbol. If the demodulation reference signal is sent on the subcarriers 0 / 2 / 6 / 8 of the 5 subcarriers, the demodulation reference signal can include only the demodulation reference signal of the demodulation reference signal port 0, or can include the demodulation reference signal of the demodulation reference signal port 0 and the demodulation reference signal of other demodulation reference signal ports. When the demodulation reference signal and the data are sent on the subcarrier 4, the subcarriers used by the phase noise reference signal on the second time domain symbol are at least one from the subcarriers 0 / 2 / 6 / 8, for example, the subcarrier 0.

[0044] In some embodiments of the application, the demodulation reference signal is sent on the X subcarriers, and the data is sent on the X subcarriers. The number of data bits carried on X3 subcarriers of the X subcarriers is less than the number of data bits carried on other subcarriers of the X subcarriers. The frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X3 subcarriers.

[0045] In the embodiments of the application, the demodulation reference signal is sent on the X subcarriers, and the data is sent on the X subcarriers. The number of data bits carried on X3 subcarriers of the X subcarriers is less than the number of data bits carried on other subcarriers of the X subcarriers. The frequency domain positions of the Y subcarriers can be a subset of the frequency domain positions of the X3 subcarriers, i.e., the frequency domain positions of the Y subcarriers can be a subset of the frequency domain positions of the subcarriers carrying the data with a smaller number of data bits.

[0046] In an example embodiment, referring to FIG. 5, the first node can send the demodulation reference signal of the physical data channel DMRS port 0 to the second node using subcarriers 0 / 2 / 4 / 6 / 8 on the first time domain symbol, and the first node can send the phase tracking reference signal associated with the DMRS port 0 to the second node using subcarriers 0 / 4 / 8 on the second time domain symbol. If the demodulation reference signal is sent on the 5 subcarriers 0 / 2 / 4 / 6 / 8, and the number of data bits carried on the subcarriers 2 / 6 (derived from the data bit stream after encoding processing) is less than or equal to the number of data bits carried on the subcarriers 0 / 4 / 8 (derived from the data bit stream after encoding processing), the available subcarriers of the phase noise reference signal on the second time domain symbol are a subset of the subcarriers 2 / 6, for example, the subcarrier 2.

[0047] In some embodiments of the application, the X subcarriers transmitting demodulation reference signals all transmit demodulation reference signals and data, and the number of data bits carried on X3 subcarriers of the X subcarriers is less than the number of data bits carried on other subcarriers of the X subcarriers, and at least one of the frequency domain positions of the Y subcarriers is the same as one of the frequency domain positions of the X3 subcarriers.

[0048] In the embodiments of the application, the X subcarriers transmitting demodulation reference signals all transmit demodulation reference signals and data, and the number of data bits carried on X3 subcarriers of the X subcarriers is less than the number of data bits carried on other subcarriers of the X subcarriers, and at least one of the frequency domain positions of the Y subcarriers transmitting the phase tracking reference signals associated with the demodulation reference signal port can be the same as one of the frequency domain positions of the X3 subcarriers.

[0049] In an exemplary embodiment, referring to FIG. 6, the first node can transmit a demodulation reference signal of a physical data channel DMRS port 0 to the second node using subcarriers 0 / 2 / 4 / 6 / 8 in a first time domain symbol, and transmit a phase tracking reference signal associated with the DMRS port 0 to the second node using subcarriers 0 / 4 / 8 in a second time domain symbol. If the five subcarriers 0 / 2 / 4 / 6 / 8 transmitting demodulation reference signals all transmit demodulation reference signals and data, and the number of data bits (derived from a data bit stream obtained after encoding processing) carried on subcarriers 2 / 6 is less than or equal to the number of data bits (derived from a data bit stream obtained after encoding processing) carried on subcarriers 0 / 4 / 8, then the available subcarriers of the phase noise reference signal in the second time domain symbol are at least one of subcarriers 2 or 6, for example, subcarrier 2.

[0050] In some embodiments of the application, at least one of the following is further included: at least one of the time domain density, the number of time domain symbols, and the time domain position of the transmitted phase tracking reference signal is determined based on at least a constellation mapping manner corresponding to a modulation order of data carried by the physical data channel; at least one of the subcarrier density, the number of subcarriers, and the subcarrier position of the transmitted phase tracking reference signal is determined based on at least a constellation mapping manner corresponding to a modulation order of data carried by the physical data channel.

[0051] In the embodiments of the present application, the information of the subcarrier density (or frequency domain density), the number of subcarriers (or frequency domain number), and the subcarrier position (or frequency domain position) of the phase tracking reference signal can be determined by a constellation mapping mode corresponding to the modulation order of the data carried by the physical data channel. Different constellation mapping modes can be configured to at least one of different subcarrier density, different number of subcarriers, and different subcarrier position of the phase tracking reference signal, or different frequency domain density, different frequency domain number, and different frequency domain position, which can be determined by the modulation order of the data carried by the physical data channel.

[0052] In an exemplary embodiment, referring to FIG. 7, the first node determines at least one of the time domain density, the number of time domain symbols, and the time domain position of the phase tracking reference signal according to the constellation mapping mode corresponding to the modulation order of the data carried by the physical data channel. For example, there are multiple constellation mapping modes for the same 256QAM modulation mode. In the standard 256QAM constellation, the distance between adjacent constellation points is equal. The 256QAM constellation obtained by shaping through geometric or artificial intelligence techniques usually involves reducing the frequency of occurrence of outer constellation points (i.e., points with larger amplitudes) and increasing the frequency of occurrence of inner constellation points, which helps to reduce the average power and increase the minimum Euclidean distance, thereby improving the transmission performance. Different constellation mapping modes can be configured to different time domain density, different number of time domain symbols, and different time domain position of the phase tracking reference signal. For example, the constellation mapping mode is determined by a first table, at least one of the time domain density, the number of time domain symbols, and the time domain position of the phase tracking reference signal is determined by a second table according to the constellation mapping mode determined by the first table, or the constellation mapping mode and the phase reference signal time domain density index value are notified to the first node by RRC signaling, MAC signaling, DCI signaling, or a combination thereof, and the first node determines the value of the phase reference signal time domain density index value based on the constellation mapping mode, for example, the same index value, the value of the time domain density corresponding to the 256QAM standard constellation is 4, and the value of the time domain density corresponding to the 256QAM shaped constellation is 2.

[0053] Alternatively, the first node determines at least one of the subcarrier density, the number of subcarriers, and the subcarrier location of the phase tracking reference signal based on at least a constellation mapping manner corresponding to a modulation order of data carried by the physical data channel, for example, determines the constellation mapping manner through a first table, and determines at least one of the subcarrier density, the number of subcarriers, and the subcarrier location of the phase tracking reference signal through a second table according to the constellation mapping manner determined through the first table. Alternatively, the first node is informed of the constellation mapping manner and an index value of the subcarrier density (frequency domain density) of the phase reference signal through RRC signaling, MAC signaling, DCI signaling, or a combination thereof, and the first node determines a value of the index value of the subcarrier density of the phase reference signal based on the constellation mapping manner, for example, a same index value, a value of the frequency domain density corresponding to a 256QAM standard constellation is 2, and a value of the frequency domain density corresponding to a 256QAM shaped constellation is 1.

[0054] In some embodiments of the application, whether the subcarriers used by the phase tracking reference signal carry data and / or signals on other demodulation reference signal ports of the first node is determined by negotiation between the first node and a second node receiving the phase tracking reference signal or is configured by default.

[0055] In embodiments of the application, whether the subcarriers used by the phase tracking reference signal can carry data and / or signals on other demodulation reference signal ports of the first node is determined by negotiation between the first node and a second node or is configured by default in the first node.

[0056] In an exemplary embodiment, the first node can use subcarriers 0 / 2 / 4 / 6 / 8 to transmit a demodulation reference signal of a physical data channel DMRS port 0 to a second node in a first time domain symbol, and use subcarriers 0 / 4 / 8 to transmit a phase tracking reference signal associated with the DMRS port 0 to the second node in a second time domain symbol, wherein whether the subcarriers used by the phase noise reference signal carry data and / or signals on other demodulation reference signal ports of the first node is determined by negotiation between the first node and a second node receiving the phase noise reference signal or is configured by default. For example, whether the subcarriers used by the phase noise reference signal also carry at least one of data information of a layer corresponding to the DMRS port 0, data information of layers corresponding to other DMRS demodulation reference signal ports, a DMRS sequence of other DMRS demodulation reference signal ports, a PTRS sequence of other PTRS demodulation reference signal ports, or an SRS sequence can be determined by default or by negotiation between the first node and the second node.

[0057] In some embodiments of the application, the demodulation reference signal port demodulation reference signal and data are transmitted on the subcarriers corresponding to the Y subcarrier frequency domain positions in the first time-frequency domain symbol, the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers is the demodulation reference signal port in the first time domain symbol, and the demodulation reference signal port demodulation reference signal transmitted on the subcarriers corresponding to the Y subcarrier frequency domain positions, or the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers is the demodulation reference signal port in the first time domain symbol, and the demodulation reference signal port demodulation reference signal and data transmitted on the subcarriers corresponding to the Y subcarrier frequency domain positions.

[0058] In the embodiments of the application, the first node transmits the content of the demodulation reference signal port demodulation reference signal and data on the subcarriers corresponding to the Y subcarriers of the second time domain symbol in the X subcarriers of the first time domain symbol, and the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers corresponding to the X subcarriers in the frequency domain position is the demodulation reference channel port in the first time domain symbol, and the demodulation reference signal corresponding to the above demodulation reference signal port transmitted on the subcarriers corresponding to the frequency domain position of the Y subcarriers, or the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers corresponding to the X subcarriers in the frequency domain position is the demodulation reference channel port in the first time domain symbol, and the demodulation reference signal corresponding to the above demodulation reference signal port and data transmitted on the subcarriers corresponding to the frequency domain position of the Y subcarriers, wherein the data can be data associated with the demodulation reference signal port, or data associated with one or more other demodulation reference signal ports.

[0059] In an example embodiment, the first node can send the demodulation reference signal of the physical data channel DMRS port 0 to the second node using subcarriers 0 / 2 / 4 / 6 / 8 on the first time domain symbol, and the first node can send the phase tracking reference signal associated with the DMRS port 0 to the second node using subcarriers 0 / 4 / 8 on the second time domain symbol. If the first node sends the demodulation reference signal of the DMRS port 0 and data (which can be data of the same layer as the demodulation reference signal, and / or data of different layers) on the subcarriers of the first time domain symbol corresponding to the Y subcarrier frequency domain positions, then the content of the phase tracking reference signal associated with the DMRS port 0 sent on the Y subcarriers is the demodulation reference signal of the DMRS port 0 sent by the DMRS port 0 on the subcarriers of the first time domain symbol corresponding to the Y subcarrier frequency domain positions, or the content of the phase tracking reference signal associated with the DMRS port 0 sent on the Y subcarriers is the demodulation reference signal of the DMRS port 0 and data sent by the DMRS port 0 on the subcarriers of the first time domain symbol corresponding to the Y subcarrier frequency domain positions. For example, if the first node sends the demodulation reference signal X and data D of the DMRS port 0 on the subcarrier 0 of the first time domain symbol, then the phase noise reference signal sent on the subcarrier 0 of the second time domain symbol can be X or the demodulation reference signal and data of the DMRS port 0.

[0060] In some application embodiments, the content of the demodulation reference signal port sent on the subcarriers of the first time domain symbol corresponding to the Y subcarrier frequency domain positions is different from the content of the phase tracking reference signal associated with the demodulation reference signal port sent on the Y subcarriers, and the number of time domain symbols between any two adjacent time domain symbols sending the phase tracking reference signal in the set of time domain symbols allocated to the physical data channel is one of a fixed value F or H, (H+1) and (H+2), where F and H are integers greater than or equal to 0.

[0061] In the embodiments of the present application, the content of the port of the demodulation reference signal sent by the first node on the subcarrier corresponding to the Y subcarrier frequency domain positions in the first time domain symbol is different from the content of the phase tracking reference signal associated with the demodulation reference signal port sent by the first node on the Y subcarriers, wherein the content of the demodulation reference signal port sent by the first node on the subcarrier of the first time domain symbol corresponding to the Y subcarrier frequency domain positions can include the demodulation reference signal and data corresponding to the demodulation reference signal port, and the content of the phase tracking reference signal associated with the demodulation reference signal port sent on the Y subcarriers can include the demodulation reference signal at the position corresponding to the demodulation reference signal port, the number of time domain symbols between any two adjacent time domain symbols in which the phase tracking reference signal is sent in the set of time domain symbols allocated to the physical data channel is a fixed value F, that is, the number of time domain symbols between any two adjacent time domain symbols in the set of time domain symbols allocated to the physical data channel is equal and is the fixed value F; or the number of time domain symbols between any two adjacent time domain symbols in which the phase tracking reference signal is sent in the set of time domain symbols allocated to the physical data channel is one of H, (H+1) and (H+2), that is, the number of time domain symbols between any two adjacent time domain symbols in the set of time domain symbols allocated to the physical data channel can not be the same, but the specific value can be one of H, (H+1) and (H+2), wherein F and H are integers greater than or equal to 0.

[0062] In an example embodiment, the first node can send the demodulation reference signal of the physical data channel DMRS port 0 to the second node using subcarriers 0 / 2 / 4 / 6 / 8 on the first time domain symbol, and the first node sends the phase tracking reference signal associated with the DMRS port 0 to the second node using subcarriers 0 / 4 / 8 on the second time domain symbol, if the content of the DMRS port 0 sent by the first node on the subcarriers of the first time domain symbol corresponding to the Y subcarrier frequency domain positions is different from the content of the phase noise reference signal associated with the demodulation reference signal port sent by the first node on the Y subcarriers, the number of time domain symbols between any two adjacent time domain symbols sending the phase tracking reference signal in the set of time domain symbols allocated to the physical data channel is a fixed value F, or one of the three values of H, (H+1), (H+2), where F, H are integers greater than or equal to 0. For example, the time domain symbols allocated to the physical data channel are time domain symbol 0 to time domain symbol 8, and the phase tracking reference signal is sent on time domain symbol 1, 3, 5, 7, at this time the value of F is 1. For another example, the time domain symbols allocated to the physical data channel are time domain symbol 0 to time domain symbol 8, and the demodulation reference signal is sent on time domain symbol 3, then the phase tracking reference signal is sent on time domain symbol 1, 2, 5, 7, at this time the number of time domain symbols between adjacent time domain symbols sending the phase tracking reference signal is one of the three values of 0, 1, 2. For another example, the time domain symbols allocated to the physical data channel are time domain symbol 0 to time domain symbol 8, and the demodulation reference signal is sent on time domain symbol 3, then the phase tracking reference signal is sent on time domain symbol 1, 4, 5, 7, at this time the number of time domain symbols between adjacent time domain symbols sending the phase tracking reference signal is one of the three values of 0, 1, 2.

[0063] In some application embodiments, further comprising: data retransmission of the physical data channel, the number of time domain symbols of the phase tracking reference signal used by the retransmission is greater than or equal to the number of time domain symbols of the phase tracking reference signal used by the first transmission;

[0064] Or, the number of subcarriers of the phase tracking reference signal used by the retransmission on the corresponding time domain symbol is greater than or equal to the number of subcarriers of the phase tracking reference signal used by the first transmission on the corresponding time domain symbol;

[0065] Or, the transmission power of the phase tracking reference signal used by the retransmission is greater than or equal to the transmission power of the phase tracking reference signal used by the first transmission.

[0066] In the embodiments of the present application, the physical data channel supports data retransmission, the number of time domain symbols of the phase tracking reference signal used in retransmission is greater than or equal to the number of time domain symbols of the phase tracking reference signal used in initial transmission, or the number of subcarriers of the phase tracking reference signal used in retransmission on a time domain symbol is greater than or equal to the number of subcarriers of the phase tracking reference signal used in initial transmission on the corresponding time domain symbol, or the transmission power of the phase tracking reference signal used in retransmission is greater than or equal to the transmission power of the phase tracking reference signal used in initial transmission.

[0067] In an exemplary embodiment, the first node can transmit the demodulation reference signal of the physical data channel DMRS port 0 to the second node using subcarriers 0 / 2 / 4 / 6 / 8 on the first time domain symbol, and the first node transmits the phase tracking reference signal associated with the DMRS port 0 to the second node using subcarriers 0 / 4 / 8 on the second time domain symbol, and if the data of the physical data channel needs to be retransmitted, the number of time domain symbols of the phase noise reference signal used in retransmission is greater than or equal to the number of time domain symbols of the phase noise reference signal used in initial transmission, or the number of subcarriers of the phase noise reference signal used in retransmission on the corresponding time domain symbol is greater than or equal to the number of subcarriers of the phase noise reference signal used in initial transmission on the corresponding time domain symbol, or the transmission power of the phase noise reference signal used in retransmission is greater than or equal to the transmission power of the phase noise reference signal used in initial transmission.

[0068] FIG. 8 is a flowchart of another phase tracking reference signal transmission method provided by the embodiments of the present application. The embodiments of the present application are applicable to the case of phase tracking reference signal transmission. The method can be executed by a phase tracking reference signal transmission device, which can be implemented by software and / or hardware and can be integrated in a base station or a terminal device. As shown in FIG. 8, the method provided by the embodiments of the present application specifically includes the following steps:

[0069] Step 210: receiving the demodulation reference signal of the demodulation reference signal port of the physical data channel transmitted by the first node using X subcarriers on the first time domain symbol.

[0070] In the embodiments of the present application, the first node can transmit the demodulation reference signal to the second node using X subcarriers on the first time domain symbol, and the second node can receive the demodulation reference signal transmitted by the first node, which corresponds to the demodulation reference signal port of the physical data channel.

[0071] Step 220: receiving the phase tracking reference signal associated with the demodulation reference signal port transmitted by the first node using Y subcarriers on the second time domain symbol; wherein X is an integer greater than 0, Y is an integer greater than 0 and less than or equal to X, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X subcarriers.

[0072] Specifically, the second node can receive that the first node transmits the phase tracking reference signal using Y subcarriers on the second time domain symbol, the phase tracking reference signal can be associated with a demodulation reference signal port of a demodulation reference signal transmitted on the first time domain symbol, and the frequency domain positions of the Y subcarriers can be a subset of the frequency domain positions of the X subcarriers.

[0073] In some embodiments of the application, X1 subcarriers of the X subcarriers only transmit the demodulation reference signal, X2 subcarriers of the X subcarriers transmit the demodulation reference signal and data, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X1 subcarriers.

[0074] In some embodiments of the application, X1 subcarriers of the X subcarriers only transmit the demodulation reference signal, X2 subcarriers of the X subcarriers transmit the demodulation reference signal and data, and at least one of the frequency domain positions of the Y subcarriers is the same as one of the frequency domain positions of the X1 subcarriers.

[0075] In some embodiments of the application, all of the subcarriers of the X subcarriers transmit the demodulation reference signal and data, X3 subcarriers of the X subcarriers carry a smaller number of data bits than other subcarriers of the X subcarriers, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X3 subcarriers.

[0076] In some embodiments of the application, all of the subcarriers of the X subcarriers transmit the demodulation reference signal and data, X3 subcarriers of the X subcarriers carry a smaller number of data bits than other subcarriers of the X subcarriers, and at least one of the frequency domain positions of the Y subcarriers is the same as one of the frequency domain positions of the X3 subcarriers.

[0077] In some embodiments of the application, the following at least one is further included:

[0078] At least one of the time domain density, the number of time domain symbols, and the time domain position for transmitting the phase tracking reference signal is determined based on at least a constellation mapping manner corresponding to a modulation order of data carried by the physical data channel;

[0079] At least one of the subcarrier density, the number of subcarriers, and the subcarrier position for transmitting the phase tracking reference signal is determined based on at least a constellation mapping manner corresponding to a modulation order of data carried by the physical data channel.

[0080] In some embodiments of the application, whether data and / or signals on other demodulation reference signal ports of the first node are carried on the subcarriers used by the phase tracking reference signal is determined by negotiation with the first node transmitting the phase tracking reference signal or is configured by default.

[0081] In some embodiments of the application, the content of the demodulation reference signal port transmitted on the subcarriers of the first time-frequency domain symbol corresponding to the Y subcarrier frequency domain positions is the demodulation reference signal of the demodulation reference signal port and data, and the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers is the demodulation reference signal port in the first time domain symbol, and the demodulation reference signal of the demodulation reference signal port transmitted on the subcarriers corresponding to the Y subcarrier frequency domain positions, or the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers is the demodulation reference signal port in the first time domain symbol, and the demodulation reference signal of the demodulation reference signal port and data transmitted on the subcarriers corresponding to the Y subcarrier frequency domain positions.

[0082] In some embodiments of the application, the content of the demodulation reference signal port transmitted on the subcarriers of the first time-frequency domain symbol corresponding to the Y subcarrier frequency domain positions is different from the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers, and the number of time domain symbols between any two adjacent time domain symbols transmitting the phase tracking reference signal in the set of time domain symbols allocated to the physical data channel is a fixed value F or one of the three values of H, (H+1) and (H+2), where F and H are integers greater than or equal to 0.

[0083] In some embodiments of the application, the data retransmission of the physical data channel also includes that the number of time domain symbols of the phase tracking reference signal used for retransmission is greater than or equal to the number of time domain symbols of the phase tracking reference signal used for initial transmission;

[0084] Or, the number of subcarriers of the phase tracking reference signal used for retransmission on the corresponding time domain symbol is greater than or equal to the number of subcarriers of the phase tracking reference signal used for initial transmission on the corresponding time domain symbol;

[0085] Or, the transmission power of the phase tracking reference signal used for retransmission is greater than or equal to the transmission power of the phase tracking reference signal used for initial transmission.

[0086] FIG. 9 is a structural schematic diagram of a phase tracking reference signal transmission device provided by an embodiment of the application. The device can execute the phase tracking reference signal transmission method provided by any embodiment of the application, and has the corresponding function modules and beneficial effects of the execution method. The device can be realized by software and / or hardware. As shown in FIG. 9, the device provided by an embodiment of the application specifically includes:

[0087] The demodulation transmission module 310 is configured to transmit the demodulation reference signal of the demodulation reference signal port of the physical data channel using X subcarriers on the first time domain symbol.

[0088] The phase tracking sending module 320 is configured to send, on the second time domain symbol, a phase tracking reference signal associated with the demodulation reference signal port using Y subcarriers; X is an integer greater than 0, Y is an integer greater than 0 and less than or equal to X, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X subcarriers.

[0089] FIG. 10 is a structural schematic diagram of another phase tracking reference signal transmission apparatus provided in an embodiment of the present application, which can perform the phase tracking reference signal transmission method provided in any embodiment of the present application, and has the function modules and advantages corresponding to the method. The apparatus can be implemented by software and / or hardware. As shown in FIG. 10, the apparatus provided in an embodiment of the present application specifically includes:

[0090] The demodulation receiving module 410 is configured to receive the demodulation reference signal of the demodulation reference signal port of the physical data channel sent by the first node on the first time domain symbol using the X subcarriers.

[0091] The phase tracking receiving module 420 is configured to receive the phase tracking reference signal associated with the demodulation reference signal port sent by the first node on the second time domain symbol using the Y subcarriers; X is an integer greater than 0, Y is an integer greater than 0 and less than or equal to X, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X subcarriers.

[0092] FIG. 11 is a structural schematic diagram of an electronic device provided in an embodiment of the present application. The electronic device includes a processor 10, a memory 11, an input device 12 and an output device 13. The number of processors 10 in the electronic device can be one or more, and the processor 10 is taken as an example. The processor 10, the memory 11, the input device 12 and the output device 13 in the electronic device can be connected through a bus or other means, and the connection through the bus is taken as an example in FIG. 11.

[0093] The memory 11 is a computer readable storage medium, which can be used to store software programs, computer executable programs and modules, such as the corresponding modules (the demodulation sending module 310 and the phase tracking sending module 320, or the demodulation receiving module 410 and the phase tracking receiving module 420) of the micro-deformation monitoring apparatus in the embodiment of the present application. The processor 10 performs various function applications and data processing of the electronic device by running the software programs, instructions and modules stored in the memory 11, that is, the method described above is implemented.

[0094] The memory 11 can include a program storage area that can store an operating system, application programs required for at least one function, and a data storage area that can store data created according to use of the electronic device, etc. In addition, the memory 11 can include a high-speed random access memory, and can further include a non-volatile memory such as at least one of a magnetic disk storage device, a flash memory device, or other non-volatile solid state storage device. In some examples, the memory 11 can further include a memory disposed remotely with respect to the processor 10, which can be connected to the electronic device through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0095] The input device 12 can be used to receive inputted digital or character information, and to generate key signal inputs related to user settings and function controls of the electronic device. The output device 13 can include a display device such as a display screen, etc.

[0096] The embodiments of the present application also provide a storage medium containing computer executable instructions, which, when executed by a computer processor, are used to perform a phase tracking reference signal transmission method. The method is applied to a first node, and includes:

[0097] transmitting a demodulation reference signal of a demodulation reference signal port of a physical data channel using X subcarriers on a first time domain symbol;

[0098] transmitting a phase tracking reference signal associated with the demodulation reference signal port using Y subcarriers on a second time domain symbol;

[0099] wherein the X is an integer greater than 0, the Y is an integer greater than 0 and less than or equal to X, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X subcarriers.

[0100] Alternatively, the computer executable instructions, when executed by a computer processor, are used to perform a phase tracking reference signal transmission method. The method is applied to a second node, and includes:

[0101] receiving a demodulation reference signal of a demodulation reference signal port of a physical data channel transmitted by a first node using X subcarriers on a first time domain symbol;

[0102] receiving a phase tracking reference signal associated with the demodulation reference signal port transmitted by the first node using Y subcarriers on a second time domain symbol;

[0103] wherein the X is an integer greater than 0, the Y is an integer greater than 0 and less than or equal to X, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X subcarriers.

[0104] From the above description about the embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software and necessary universal hardware, and of course can also be implemented by hardware, but in many cases the former is a better implementation. Based on such understanding, the technical solutions of the present application or the part that contributes to the related art can be embodied in the form of a software product, and the computer software product can be stored in a computer readable storage medium, such as a floppy disk, a read-only memory (ROM), a random access memory (RAM), a FLASH memory, a hard disk, or an optical disc, etc., and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments of the present application.

[0105] It is worth noting that in the embodiments of the above device, each unit and module included is only divided according to the function logic, but is not limited to the above division, as long as the corresponding function can be realized; in addition, the specific name of each functional unit is only for convenient mutual distinction, and does not serve to limit the protection scope of the present application.

[0106] Those skilled in the art can understand that all or some of the steps in the above disclosed method, the functional modules / units in the device and the equipment can be implemented as software, firmware, hardware and their appropriate combinations.

[0107] In hardware implementation, the division of the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component can have multiple functions, or one function or step can be performed by several physical components in cooperation. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. The corresponding software can be distributed on a computer readable medium, which can include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media include, but are not limited to, RAM, ROM, Electrically Erasable Programmable Read-Only Memory (EEPROM), flash memory or other memory technology, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, as known to those skilled in the art, communication media generally include computer readable instructions, data structures, program modules or other data in modulated data signals such as carrier waves or other transmission mechanisms, and can include any information delivery medium.

[0108] The above describes the preferred embodiments of the present application with reference to the accompanying drawings, and does not limit the scope of the present application. Any modifications, equivalent replacements and improvements made by those skilled in the art without departing from the scope and essence of the present application shall be within the scope of the present application.

Claims

1. A phase tracking reference signal transmission method applied to a first node, the method comprising: transmitting a demodulation reference signal of a demodulation reference signal port of a physical data channel using X subcarriers in a first time domain symbol; transmitting a phase tracking reference signal associated with the demodulation reference signal port using Y subcarriers in a second time domain symbol; wherein the X is an integer greater than 0, the Y is an integer greater than 0 and less than or equal to X, and the Y subcarriers are a subset of the X subcarriers in frequency domain.

2. The method of claim 1, wherein, X1 of the X subcarriers transmit only demodulation reference signals, and X2 of the X subcarriers transmit demodulation reference signals and data, and the Y subcarriers are a subset of the X1 subcarriers in frequency domain.

3. The method of claim 1, wherein, X1 of the X subcarriers transmit only demodulation reference signals, and X2 of the X subcarriers transmit demodulation reference signals and data, and at least one of the Y subcarriers is the same as one of the X1 subcarriers in frequency domain.

4. The method of claim 1, wherein, All of the X subcarriers transmit demodulation reference signals and data, and X3 of the X subcarriers carry less data bits than other subcarriers of the X subcarriers, and the Y subcarriers are a subset of the X3 subcarriers in frequency domain.

5. The method of claim 1, wherein, All of the X subcarriers transmit demodulation reference signals and data, and X3 of the X subcarriers carry less data bits than other subcarriers of the X subcarriers, and at least one of the Y subcarriers is the same as one of the X3 subcarriers in frequency domain. 6.The method of claim 1, further comprising at least one of the following: determining at least one of a time domain density, a number of time domain symbols, and a time domain position for transmitting the phase tracking reference signal based on at least a constellation mapping manner corresponding to a modulation order of data carried by the physical data channel; determining at least one of a subcarrier density, a number of subcarriers, and a subcarrier position for transmitting the phase tracking reference signal based on at least a constellation mapping manner corresponding to a modulation order of data carried by the physical data channel.

7. The method of claim 1, wherein, whether the subcarriers used by the phase tracking reference signal carry at least one of data and signals on other demodulation reference signal ports of the first node is determined by negotiation with a second node receiving the phase tracking reference signal or is configured by default.

8. The method of claim 1, wherein, The content of the demodulation reference signal port transmitted on the subcarriers corresponding to the Y subcarrier frequency domain positions in the first time domain symbol is the demodulation reference signal of the demodulation reference signal port in the first time domain symbol, and the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers is the demodulation reference signal of the demodulation reference signal port in the first time domain symbol and the demodulation reference signal of the demodulation reference signal port and data transmitted on the subcarriers corresponding to the Y subcarrier frequency domain positions, or the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers is the demodulation reference signal of the demodulation reference signal port in the first time domain symbol and the demodulation reference signal of the demodulation reference signal port and data transmitted on the subcarriers corresponding to the Y subcarrier frequency domain positions.

9. The method of claim 1, wherein, The content of the demodulation reference signal port transmitted on the subcarriers corresponding to the Y subcarrier frequency domain positions in the first time domain symbol is different from the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers, and the number of time domain symbols between any two adjacent time domain symbols in which the phase tracking reference signal is transmitted in a set of time domain symbols allocated to the physical data channel is a fixed value F or the number of time domain symbols between any two adjacent time domain symbols in which the phase tracking reference signal is transmitted is one of three values H, (H+1) and (H+2), where F and H are integers greater than or equal to 0.

10. The method of claim 1, further comprising: The number of time domain symbols of the phase tracking reference signal used in the data retransmission of the physical data channel is greater than or equal to the number of time domain symbols of the phase tracking reference signal used in the initial transmission; Or, the number of subcarriers of the phase tracking reference signal used in the data retransmission on the corresponding time domain symbol is greater than or equal to the number of subcarriers of the phase tracking reference signal used in the initial transmission on the corresponding time domain symbol; Or, the transmission power of the phase tracking reference signal used in the data retransmission is greater than or equal to the transmission power of the phase tracking reference signal used in the initial transmission.

11. A phase tracking reference signal transmission method applied to a second node, the method comprising: receiving a demodulation reference signal of a demodulation reference signal port of a physical data channel transmitted by a first node using X subcarriers on a first time domain symbol; receiving a phase tracking reference signal associated with the demodulation reference signal port transmitted by the first node using Y subcarriers on a second time domain symbol; wherein X is an integer greater than 0, Y is an integer greater than 0 and less than or equal to X, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X subcarriers.

12. The method of claim 11, wherein, X1 subcarriers in the X subcarriers only transmit demodulation reference signals, and X2 subcarriers transmit demodulation reference signals and data, and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X1 subcarriers.

13. The method of claim 11, wherein, The X subcarriers include X1 subcarriers on which only demodulation reference signals are transmitted, and X2 subcarriers on which demodulation reference signals and data are transmitted; and at least one of the frequency domain positions of the Y subcarriers is the same as one of the frequency domain positions of the X1 subcarriers.

14. The method of claim 11, wherein, The X subcarriers include subcarriers on which only demodulation reference signals and data are transmitted; and X3 subcarriers on which the number of data bits carried is less than the number of data bits carried on other subcarriers of the X subcarriers; and the frequency domain positions of the Y subcarriers are a subset of the frequency domain positions of the X3 subcarriers.

15. The method of claim 11, wherein, The X subcarriers include subcarriers on which only demodulation reference signals and data are transmitted; and X3 subcarriers on which the number of data bits carried is less than the number of data bits carried on other subcarriers of the X subcarriers; and at least one of the frequency domain positions of the Y subcarriers is the same as one of the frequency domain positions of the X3 subcarriers.

16. The method of claim 11, further comprising at least one of the following: determining at least one of a time domain density, a number of time domain symbols, and a time domain position for transmitting the phase tracking reference signal based on at least a constellation mapping manner corresponding to a modulation order of data carried by the physical data channel; determining at least one of a subcarrier density, a number of subcarriers, and a subcarrier position for transmitting the phase tracking reference signal based on at least a constellation mapping manner corresponding to a modulation order of data carried by the physical data channel.

17. The method of claim 11, wherein, whether the subcarriers used by the phase tracking reference signal carry at least one of data and signals on other demodulation reference signal ports of the first node is determined by negotiation with the first node transmitting the phase tracking reference signal or is configured by default.

18. The method of claim 11, wherein, The Y subcarriers carry demodulation reference signals and data of the demodulation reference signal port in the first time-frequency domain symbol corresponding to the frequency domain positions of the Y subcarriers; and the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers is the demodulation reference signal port in the first time domain symbol and the demodulation reference signal of the demodulation reference signal port transmitted on the subcarriers corresponding to the frequency domain positions of the Y subcarriers, or the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers is the demodulation reference signal port in the first time domain symbol and the demodulation reference signal and data of the demodulation reference signal port transmitted on the subcarriers corresponding to the frequency domain positions of the Y subcarriers.

19. The method of claim 11, wherein, The content of the demodulation reference signal port transmitted on the subcarrier of the first time domain symbol corresponding to the Y subcarrier frequency domain positions is different from the content of the phase tracking reference signal associated with the demodulation reference signal port transmitted on the Y subcarriers, and the number of time domain symbols between any two adjacent time domain symbols in which the phase tracking reference signal is transmitted in the set of time domain symbols allocated to the physical data channel is a fixed value F, or the number of time domain symbols between any two adjacent time domain symbols in which the phase tracking reference signal is transmitted is one of H, (H+1) and (H+2), wherein F and H are integers greater than or equal to 0.

20. The method of claim 11, further comprising: data retransmission of the physical data channel, wherein the number of time domain symbols of the phase tracking reference signal used in retransmission is greater than or equal to the number of time domain symbols of the phase tracking reference signal used in initial transmission; or, the number of subcarriers of the phase tracking reference signal used in retransmission on the corresponding time domain symbol is greater than or equal to the number of subcarriers of the phase tracking reference signal used in initial transmission on the corresponding time domain symbol; or, the transmission power of the phase tracking reference signal used in retransmission is greater than or equal to the transmission power of the phase tracking reference signal used in initial transmission.

21. An electronic device, comprising: at least one processor; a memory configured to store at least one program; when the at least one program is executed by the at least one processor, the at least one processor implements the transmission method of the phase tracking reference signal according to any one of claims 1-20.

22. A computer readable storage medium, the computer readable storage medium stores at least one program, the at least one program is executed by at least one processor to implement the transmission method of the phase tracking reference signal according to any one of claims 1-20.

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